A pressure sensing system of a pneumatic spring brake chamber for a vehicle according to an embodiment of the present disclosure includes a plurality of pressure sensors configured to measure pressure in a pressure chamber formed between a piston and an adapter housing and a service chamber formed between the adapter housing and a diaphragm, a control box electrically connected to the plurality of pressure sensors, and an indicator electrically coupled to the control box, wherein the control box is wired for power supply and output voltage to the plurality of pressure sensors, and the indicator located in a vehicle driver's seat is configured to generate an alarm about an abnormal situation of the pneumatic spring brake chamber for a vehicle based on pressure measurement values in the pressure chamber and the service chamber through the plurality of pressure sensors.
An abnormality diagnostic system for a pneumatic spring brake chamber for a vehicle, according to the present invention, includes: a pressure measurement unit for pressure measurement in each of a parking chamber, which is formed between a piston and an adapter housing, and a service chamber, which is formed between the adapter housing and a diaphragm; a brake lining temperature sensing unit connected to a brake lining to sense a brake lining temperature; and a notification unit that generates an alarm for abnormal brake conditions on the basis of pressure measurement values from the pressure measurement unit and the temperature measurement value from the lining temperature sensing unit.
An automotive air pressure spring brake chamber includes a head housing, a bottom housing, an adaptor housing between the head housing and the bottom housing, a piston between the head housing and the adaptor housing, a hollow actuator rod coupled to the piston, and a caging bolt assembly moving through the actuator rod by rotation of a caging bolt and being disposed along the through-hole of the adaptor housing, in which a caging nut is coupled to an end of the caging bolt. The caging bolt assembly includes a caging bolt body having a caging bolt head at an upper end, an indicator coupled in an axial direction through the caging bolt body, a nut stopper coupled to an end of the indicator, the caging nut screw-coupled to an outer circumferential surface of the caging bolt body, and an elastic structure between the indicator and the caging bolt body.
B60T 13/38 - Systèmes à air comprimé dans lesquels les freins actionnés par des ressorts ou des poids sont relâchés par l'air comprimé
B60T 13/04 - Transmission de l'action de freinage entre l'organe d'attaque et les organes terminaux d'action, avec puissance de freinage assistée ou relais de puissanceSystèmes de freins incorporant ces moyens de transmission, p. ex. systèmes de freinage à pression d'air avec assistance ou entraînement mécanique par ressort ou par poids
4.
PNEUMATIC SPRING BRAKE CHAMBER FOR VEHICLE HAVING CAGING BOLT ASSEMBLY
A pneumatic spring brake chamber for a vehicle having a caging bolt assembly according to the present invention has: a head housing; a bottom housing; an adaptor housing provided between the head housing and the bottom housing; a piston disposed between the head housing and the adaptor housing; a hollow actuator rod coupled to the piston and passing through a through hole of the adaptor housing; and a caging nut driven via the actuator rod by the rotation of a caging bolt, disposed along the through hole of the adaptor housing, and coupled to the end of the caging bolt. The caging bolt assembly comprises: a caging bolt body having the head of the caging bolt formed on the upper end; an indicator coupled by passing through the inside of the caging bolt body in the axial direction; a nut stopper coupled to the end of the indicator; the caging nut screw-coupled to the outer peripheral surface of the caging bolt body; and a resilient body disposed between the indicator and the caging bolt body. In order to prevent separation of the caging nut which vertically moves in accordance with the rotation of the caging bolt inside the actuator rod, the nut stopper is coupled to the end of the indicator disposed so as to pass through the caging bolt, to prevent the caging nut from falling off.
B60T 13/38 - Systèmes à air comprimé dans lesquels les freins actionnés par des ressorts ou des poids sont relâchés par l'air comprimé
B60T 13/04 - Transmission de l'action de freinage entre l'organe d'attaque et les organes terminaux d'action, avec puissance de freinage assistée ou relais de puissanceSystèmes de freins incorporant ces moyens de transmission, p. ex. systèmes de freinage à pression d'air avec assistance ou entraînement mécanique par ressort ou par poids
B60T 8/42 - Dispositions pour adapter la force de freinage sur la roue aux conditions propres au véhicule ou à l'état du sol, p. ex. par limitation ou variation de la force de freinage selon une condition de vitesse, p. ex. accélération ou décélération comportant un régulateur de pression fluidique répondant à une condition de vitesse comportant des chambres d'expansion pour commander la pression
F16B 39/10 - Blocage des vis, boulons ou écrous dans lequel le verrouillage s'effectue après vissage par une plaque ou un anneau immobile par rapport au boulon ou à l'objet
5.
SYSTEM FOR SENSING PRESSURE OF VEHICLE PNEUMATIC SPRING BRAKE CHAMBER
A system for sensing the pressure of a vehicle pneumatic spring brake chamber, according to the present invention, further comprises: a plurality of pressure sensors for measuring pressure in a pressure chamber formed between a piston and an adapter housing and in a service chamber formed between the adapter housing and a diaphragm; a control box electrically coupled to the plurality of pressure sensors; and an indicator electrically coupled onto the control box, wherein the control box has a wiring connection for power supply to the plurality of pressure sensors and output voltage, and the indicator disposed at a vehicle driver seat generates an alarm about an abnormal situation of the vehicle pneumatic spring brake chamber on the basis of pressure measurement values in the pressure chamber and the service chamber through the plurality of pressure sensors.
B60T 17/22 - Dispositifs pour surveiller ou vérifier les systèmes de freinsDispositifs de signalisation
B60T 13/38 - Systèmes à air comprimé dans lesquels les freins actionnés par des ressorts ou des poids sont relâchés par l'air comprimé
B60T 8/18 - Dispositions pour adapter la force de freinage sur la roue aux conditions propres au véhicule ou à l'état du sol, p. ex. par limitation ou variation de la force de freinage selon le chargement ou le poids du véhicule, p. ex. répartition du chargement
B60T 8/171 - Détection des paramètres utilisés pour la régulationMesure des valeurs utilisées pour la régulation
6.
Double-lip seal of pneumatic spring brake chamber for vehicle
The present disclosure relates to a double-lip seal of a pneumatic spring brake chamber for a vehicle, the double-lip seal has sealing performance between an inner circumferential surface of a through-hole of an adaptor housing and an outer circumferential surface of an actuator rod to prevent degradation in sealing performance of the lip seal, thereby maintaining constant sealing performance and preventing fluid leakage.
B60T 17/08 - Cylindres de freins autres que les cylindres d'action terminale
F16D 65/28 - Mécanismes d'actionnement pour freinsMoyens pour amorcer l'opération de freinage à une position prédéterminée disposés en dehors du frein
F16D 121/10 - Pression de fluide agissant sur un actionneur du type à membrane, p. ex. pour pression de gaz pour relâcher un frein normalement appliqué par défaut
F16D 125/08 - Joints d'étanchéité, p. ex. joints de piston
F16D 125/12 - Mécanismes à pression de fluide du type à membrane ou à diaphragme
F16D 125/58 - Éléments mécaniques transmettant un mouvement linéaire
7.
STRUCTURE OF PUSHROD GUIDE OF VEHICLE BRAKE CHAMBER
The present invention relates to a pushrod guide of a vehicle brake chamber. The pushrod guide is formed as a circular plate, and has formed therein: a pushrod opening through which the pushrod enters and exits; and incision surfaces that extend in the radial direction from the center of the circular plate. The incision surfaces are coupled to each other while forming a step so that slippage between surfaces contacting each other is prevented. Hinge grooves are formed, on the top surface of the circular plate, along the radial direction of the circular plate from at least 120° to less than 180° around the center of the circular plate from the incision surface. A small fan shape and a large fan shape are formed around the hinge grooves, and the small fan shape rotates relative to the large fan shape around the hinge groove, thereby being inserted into the side surface of the pushrod in the axial direction, and the hinge groove is elastically restored and thereby assembled. According to the present invention, since the incision surface is formed on the integrally formed pushrod guide, and the stepped portion is formed in the formed incision surface to enable firm fastening of the pushrod, a firm fastening strength may be maintained for the pushrod without an additional coupling member, and thus the production efficiency of the pushrod may be enhanced.
B60T 13/38 - Systèmes à air comprimé dans lesquels les freins actionnés par des ressorts ou des poids sont relâchés par l'air comprimé
B60T 13/04 - Transmission de l'action de freinage entre l'organe d'attaque et les organes terminaux d'action, avec puissance de freinage assistée ou relais de puissanceSystèmes de freins incorporant ces moyens de transmission, p. ex. systèmes de freinage à pression d'air avec assistance ou entraînement mécanique par ressort ou par poids
B60T 8/42 - Dispositions pour adapter la force de freinage sur la roue aux conditions propres au véhicule ou à l'état du sol, p. ex. par limitation ou variation de la force de freinage selon une condition de vitesse, p. ex. accélération ou décélération comportant un régulateur de pression fluidique répondant à une condition de vitesse comportant des chambres d'expansion pour commander la pression
8.
Engagement structure of push-rod guide and push-rod guide cover of brake chamber for vehicle
The present disclosure relates to an engagement structure of a push rod guide and a push rod guide cover of a brake chamber for a vehicle, in which a pair of semi-circular, hingedly connected, half members in a shape of a plate are assembled at a side surface of an axial direction of the push rod into a shape of a disk, a push rod opening is formed at the center of the disk to guide a movement of the push rod, a protrusion projecting upwards is provided at a central part of the push rod guide, forming a step in a radial direction of the push rod guide, and a receiving groove corresponding to the step is formed on an inner circumferential surface of the push rod guide cover and is connected to the step.
B60T 17/08 - Cylindres de freins autres que les cylindres d'action terminale
F16D 65/28 - Mécanismes d'actionnement pour freinsMoyens pour amorcer l'opération de freinage à une position prédéterminée disposés en dehors du frein
F16D 121/08 - Pression de fluide agissant sur un actionneur du type à membrane, p. ex. pour pression de gaz
F16D 121/10 - Pression de fluide agissant sur un actionneur du type à membrane, p. ex. pour pression de gaz pour relâcher un frein normalement appliqué par défaut
F16D 125/08 - Joints d'étanchéité, p. ex. joints de piston
F16D 125/12 - Mécanismes à pression de fluide du type à membrane ou à diaphragme
Disclosed is an air-operated brake actuator, including: a hollow upper housing; a hollow lower housing spaced apart from the upper housing in a lower direction; a coupling housing configured to couple and restrain the upper housing and the lower housing to each other; a piston disposed in the upper housing to divide an inside of the upper housing into a spring chamber and a pressure chamber disposed below the spring chamber; a hollow actuator rod disposed in the piston; a casing bolt head disposed at a lower end of the actuator rod and having an air flow hole formed therein; a pilot lip seal fixed to an outer surface of the casing bolt head to seal an outer end of the air flow hole; and a compression spring installed in the spring chamber.
Disclosed is a brake actuator which is able to adjust the operational states of a brake connection to the lower end of a push rod disposed movable upward or downward while passing through the lower end of a service brake housing in such a way that a diaphragm moves upward or downward a pressure plate in response to the elastic force of a compressive spring in a spring chamber and the adjustment of an air pressure in a pressure chamber.
Provided is a brake actuator having a diaphragm which vertically moves a pressure plate according to the elastic force of a compression spring inside a spring chamber and the adjustment of air pressure inside a pressure chamber, thereby enabling the adjustment of the operation or non-operation of a brake connected to the lower end of a push rod which passes through the lower end of a service brake housing and is formed to be capable of vertical movement, the brake actuator comprising: a piston which is disposed in the spring brake housing and divides the inside of the spring brake housing into a spring chamber and a pressure chamber positioned in the lower part of the spring chamber; a hollow actuator rod which extends from the lower end of the piston; an actuator rod valve which is disposed on the lower end of the actuator rod; and a diaphragm which is disposed in the service brake housing and divides the inside of the service brake housing into a service chamber and a push rod chamber positioned in the lower part of the service chamber, wherein the actuator rod valve enables air to flow from the spring chamber to the service chamber when compressed air flows into the pressure chamber.
An air-operated brake actuator, according to the present invention, comprises: a hollow upper housing; a hollow lower housing which is spaced apart in the direction of the lower part of the upper housing; a coupling housing which couples the upper housing and the lower housing for restraining and connecting the upper housing and the lower housing; a piston which is disposed in the upper housing and divides the inside of the upper housing into a spring chamber and a pressure chamber disposed on the lower part of the spring chamber; a hollow actuator rod which is disposed inside the piston; a caging bolt head which is disposed on the lower end of the actuator rod and has an air flow hole formed thereon; a pilot lip seal which is fixed to the outer surface of the caging bolt head and functions to enable the outer end of the air flow hole to be sealable; a compression spring which is installed inside the spring chamber; a diaphragm which is disposed in the lower housing and divides the inside of the lower housing into a service chamber and a push rod chamber disposed on the lower part of the service chamber; a pressure plate which is in contact with the lower end of the diaphragm so as to vertically move along the diaphragm; and a push rod which is positioned inside the push rod chamber by having one end thereof vertically coupled to the lower end of the pressure plate and the other end thereof passing through a through-hole of the upper housing.
The objective of the present invention is to provide an electrically-powered parking brake apparatus for mid-size and large commercial vehicles, which can solve existing problems by realizing a stroke (parking brake force) that enables an electrically-powered brake operation by applying a motor, a reduction gear, and a linear module, instead of a mechanical brake operation which uses an existing power spring, etc. The electrically-powered parking brake apparatus for mid-size and large commercial vehicles according to the present invention comprises: a motor which provides a driving force; a reduction gear which reduces the speed of the motor; and a linear module which produces a stroke of the parking brake of mid-size and large commercial vehicles by converting a speed-reduced rotary motion of the motor into a rectilinear motion.
B60T 13/74 - Transmission de l'action de freinage entre l'organe d'attaque et les organes terminaux d'action, avec puissance de freinage assistée ou relais de puissanceSystèmes de freins incorporant ces moyens de transmission, p. ex. systèmes de freinage à pression d'air avec entraînement ou assistance électrique
F16D 65/18 - Mécanismes d'actionnement pour freinsMoyens pour amorcer l'opération de freinage à une position prédéterminée disposés dans, ou sur le frein adaptés pour rapprocher les organes par traction
F16H 1/02 - Transmissions à engrenages pour transmettre un mouvement rotatif sans engrenages à mouvement orbital
The present invention relates to an electromagnetic air compressor which causes a change in the polarity of an electromagnet by means of a change in the current circuit using an inverter, generates high load power using attraction and repulsion generated by a difference in polarity through a permanent magnet, and compresses air using the power source to generate high pressure compressed air. The present invention includes: a first cylinder and a second cylinder which are hollow and are arranged parallel to each other in the axial direction; a first piston and a second piston which have magnets of different polarities and are disposed in a linearly movable manner while being in internal contact with the cylinders; a first central body and a second central body which are inserted in an airtight manner and are in contact with each other between the first and second cylinders; an electromagnet part which is coaxially inserted between the first and second central bodies and forms a magnetic force between the magnet and the electromagnet portion when power is supplied; and a first side cover and a second side cover which are inserted in an airtight manner into the outer side end portions of the first and second cylinders and are coupled to each other to support the cylinder and the central body therebetween. A magnetic force between the magnet and the electromagnet part causes the piston to reciprocate along the inner wall of the cylinder so as to generate compressed air.
F04B 17/04 - Pompes caractérisées par leur combinaison avec des machines motrices ou moteurs particuliers qui les entraînent ou par leur adaptation à ceux-ci entraînées par des moteurs électriques utilisant des solénoïdes
F04B 35/04 - Pompes à piston spécialement adaptées aux fluides compressibles et caractérisées par les moyens d'entraînement de leurs organes de travail ou par leur combinaison avec les machines motrices ou moteurs qui les entraînent ou bien par leurs adaptations à cet effet, non prévues ailleurs les moyens étant électriques
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