Hand brake valve operating device and hand brake valve

Abstract

The present application relates to the technical field of vehicle braking, and provides a hand brake valve operating device and a hand brake valve. The operating device comprises a thrust block and a locking block, the locking block is provided with a sliding surface for the movement of the thrust block, a side wall protruding from the sliding surface, and a locking groove at the front end of the sliding surface for the falling of the thrust block; a crossbar is movably arranged on the side wall and at the front end of the locking groove; a false locking prevention mechanism comprises a false locking prevention pin movably connected to the crossbar, and when the thrust block is at a non-parking position, the false locking prevention pin blocks the edge of the locking groove; when the thrust block moves along the sliding surface to the parking position, the crossbar is pushed to drive the false locking prevention pin to leave a falling path for the thrust block to fall into the locking groove. The operating device and the hand brake valve of the present application can effectively avoid the occurrence of the "false locking" problem during parking braking through the false locking prevention mechanism, and improve the stability and safety of parking braking.

Description

Technical Field

[0001] This invention relates to the field of vehicle braking technology, and more specifically, to a handbrake valve operating device and a handbrake valve. Background Technology

[0002] The handbrake valve is an important component of the braking system in commercial vehicles and other vehicles. Its main function is to achieve the parking brake of the entire vehicle. The parking brake function mainly relies on the operating device of the handbrake valve. In practical applications, the driver can control the handle of the operating device to move it to a designated position to control the air pressure output of the handbrake valve, thereby achieving the parking brake and release of the entire vehicle.

[0003] The reliability of the parking brake mainly depends on whether the handle of the operating device can be fixed in the parking position (locked position) and not change position. In the current design, a structure in which a thrust block and a locking block cooperate to fix the handle in the parking position is adopted. Its working principle is as follows: when the driver pushes the handle, moving it from the driving position to the parking position, the thrust block follows the handle and moves along the curved surface of the locking block; when the handle moves to the parking position, the thrust block falls into the locking groove of the locking block, thus fixing the handle, which is fixedly connected to the thrust block, in the parking position, realizing the parking brake; when the driver pulls the handle upward, pulling the thrust block out of the locking groove, the handle can return from the parking position to the driving position, and the parking brake is released.

[0004] The current structure of the thrust block and locking block cannot ensure the stability of the parking brake. Specifically, with long-term use of the handbrake valve, the thrust block will wear down to a certain extent, and the amount of wear varies in different locations. This causes the thrust block to make "point-to-point" contact with the upper edge of the locking groove when the handle is in the parking position, resulting in a "false lock". At this time, although the handle is in the parking position, the thrust block has not fallen into the locking groove. Once the handle is subjected to external force (such as vehicle vibration), without the restraint of the locking groove, the handle will automatically return to the driving position, causing the parking brake to be accidentally released, posing a great safety hazard to the vehicle and personnel.

[0005] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of the present invention, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0006] In view of this, the present invention provides a handbrake valve operating device and a handbrake valve, which can effectively avoid the problem of "false locking" during parking brake operation through an anti-false locking mechanism, thereby improving the stability and safety of parking brake operation.

[0007] According to one aspect of the present invention, a handbrake valve operating device is provided, comprising a thrust block and a locking block, the locking block having a sliding surface for the thrust block to move, a side wall protruding from the sliding surface, and a locking groove located at the front end of the sliding surface for the thrust block to fall into; the operating device further comprises: a crossbar movably mounted on the side wall and located at the front end of the locking groove; an anti-false locking mechanism including an anti-false locking pin movably connected to the crossbar, wherein when the thrust block is in a non-parking position, the anti-false locking pin covers the edge of the locking groove; as the thrust block moves along the sliding surface to a parking position, the crossbar is pushed to cause the anti-false locking pin to make way for the thrust block to fall into the locking groove.

[0008] In some embodiments, the sidewall is provided with a motion track for the crossbar to pass through; the anti-false locking mechanism further includes: a connecting rod, disposed on the outer surface of the sidewall, connecting the crossbar and the anti-false locking pin; as the crossbar moves along the motion track, the crossbar drives the anti-false locking pin to move through the connecting rod.

[0009] In some embodiments, the anti-false locking mechanism further includes: a rotating arm disposed on the outer surface of the side wall and connected to the connecting rod; the anti-false locking pin passes through the side wall and is connected to the rotating arm; as the connecting rod moves, the connecting rod drives the anti-false locking pin to rotate through the rotating arm.

[0010] In some embodiments, the connecting rod is connected to one end of the rotating arm, and the anti-false locking pin is connected to the middle of the rotating arm; the anti-false locking mechanism further includes: a return spring, disposed on the outer surface of the side wall and connected to the other end of the rotating arm; as the rotating arm rotates, the rotating arm overcomes the force of the return spring to drive the anti-false locking pin to rotate; as the thrust block exits the locking groove, the return spring pulls the anti-false locking pin back to its original position through the rotating arm.

[0011] In some embodiments, the anti-false locking mechanism further includes: a limiting pin disposed on the outer surface of the side wall; as the rotating arm returns to its original position, the rotating arm rotates to be limited to the limiting pin.

[0012] In some embodiments, the outer surface of the sidewall is further provided with a fixing pin, one end of the rotating arm is provided with a return spring connecting hole, and the two ends of the return spring are respectively fixedly connected to the fixing pin and the return spring connecting hole.

[0013] In some embodiments, the connecting rod is hinged to both the crossbar and the rotating arm; the rotating arm is fixedly connected to the anti-false locking pin.

[0014] In some embodiments, one end of the connecting rod is provided with a crossbar connecting hole, and the end of the crossbar is rotatably inserted into the crossbar connecting hole; the other end of the connecting rod is provided with a connecting pin, and the connecting pin is rotatably inserted into the connecting rod connecting hole of the rotating arm.

[0015] In some embodiments, the rotating arm is provided with an anti-false locking pin connection hole in the middle; the anti-false locking pin includes a connected rod and an anti-false locking block, the rod is fixedly inserted into the anti-false locking pin connection hole, and the anti-false locking block is located on one side of the inner surface of the sidewall.

[0016] In some embodiments, the sidewall of the thrust block is provided with a guide groove; the anti-false locking pin includes a rod portion connected to the crossbar and an anti-false locking block connected to the rod portion; as the crossbar drives the anti-false locking pin to move, the anti-false locking block moves to the point where its extension direction is consistent with the extension direction of the guide groove, so as to slide into the guide groove and make way for the falling path.

[0017] In some embodiments, the sidewalls include a pair that protrude from both sides of the sliding surface, and the anti-false locking mechanism includes a pair that are symmetrically disposed on the pair of sidewalls with respect to the thrust block; the crossbar is mounted on the pair of sidewalls and its two ends are respectively connected to the pair of anti-false locking mechanisms.

[0018] In some embodiments, when the thrust block falls into the locking groove, the thrust block abuts against the rear wall of the locking groove under the action of the torsion spring.

[0019] In some embodiments, the sliding surface is a curved surface, and the thrust block is connected to a cam mechanism disposed in the locking block.

[0020] In some embodiments, the operating device further includes a handle, wherein the thrust block is fixedly connected to the end of the handle.

[0021] According to another aspect of the present invention, a handbrake valve is provided, the handbrake valve being configured with an operating device as described in any of the above embodiments.

[0022] The beneficial effects of this invention compared to the prior art include at least the following:

[0023] The operating device and handbrake valve of the present invention, through the cooperation of the anti-false locking mechanism, crossbar, thrust block and locking block, when the thrust block is in the non-parking position (including the driving position and the process of entering the parking position from the driving position), the anti-false locking pin blocks the edge of the locking groove to avoid the thrust block contacting the edge of the locking groove during the parking braking process, thereby effectively avoiding the occurrence of "false locking" problem during parking braking; as the thrust block moves along the sliding surface to the parking position, the crossbar is pushed to drive the anti-false locking pin to make way for the thrust block to fall into the locking groove, so that the thrust block falls smoothly into the locking groove, and the operating device and handbrake valve stably enter the parking state, thereby improving the stability and safety of parking braking.

[0024] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit the invention. Attached Figure Description

[0025] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention. It is obvious that the drawings described below are merely some embodiments of the invention, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0026] Figure 1 This diagram shows a schematic representation of the control device in the driving position according to an embodiment of the present invention.

[0027] Figure 2 This is a top sectional view showing the control device in the driving position in an embodiment of the present invention;

[0028] Figure 3 This is a side sectional view of the control device in the driving position according to an embodiment of the present invention;

[0029] Figure 4 This diagram illustrates the structure of the control device about to enter the parking position in an embodiment of the present invention.

[0030] Figure 5 This is a top sectional view showing the control device about to enter the parking position in an embodiment of the present invention;

[0031] Figure 6 This is a side sectional view of the control device about to enter the parking position in an embodiment of the present invention;

[0032] Figure 7 This diagram shows the structure of the control device in the parking position in an embodiment of the present invention;

[0033] Figure 8 This is a top sectional view showing the control device in the parking position in an embodiment of the present invention;

[0034] Figure 9 This is a side sectional view of the control device in the parking position according to an embodiment of the present invention;

[0035] Figure 10 This diagram shows a schematic representation of the anti-false locking mechanism in an embodiment of the present invention.

[0036] Figure 11 A schematic diagram of the sidewall structure of the locking block in an embodiment of the present invention is shown;

[0037] Figure 12 A schematic diagram of the rotating arm in an embodiment of the present invention is shown;

[0038] Figure 13 This diagram shows a schematic representation of the connecting rod in an embodiment of the present invention.

[0039] Figure 14 This diagram illustrates the structure of the anti-counterfeiting lock stop pin in an embodiment of the present invention.

[0040] Figure 15 A schematic diagram of the thrust block in an embodiment of the present invention is shown. Detailed Implementation

[0041] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to fully and completely convey the concept of the exemplary embodiments to those skilled in the art.

[0042] The accompanying drawings are merely illustrative of the invention and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and therefore, repeated descriptions of them will be omitted.

[0043] It should be noted that, unless otherwise specified, the embodiments of the present invention and the features in different embodiments can be combined with each other.

[0044] Figure 1 The diagram shows the structure with the control device in the driving position. Figure 2 The diagram shows a top cross-sectional view of the control mechanism in the driving position. Figure 3 The diagram shows a side sectional view of the control device in the driving position. Figure 4 This shows the structure where the control device is about to enter the parking position. Figure 5 The diagram shows a top-down cross-sectional view of the structure as the control mechanism is about to enter the parking position. Figure 6 The side cross-sectional view shows the control mechanism about to enter the parking position. Figure 7 The diagram shows the structure with the control device in the parking position. Figure 8The diagram shows a top cross-sectional view of the structure with the control mechanism in the parking position. Figure 9 Showing a side sectional view of the structure with the control device in the parking position; combined with Figures 1 to 9 As shown, the handbrake valve operating device provided in this embodiment of the invention includes:

[0045] The thrust block 10 and the locking block 20 are provided. The locking block 20 is provided with a sliding surface 21 for the thrust block 10 to move, a side wall 22 protruding from the sliding surface 21, and a locking groove 23 located at the front end of the sliding surface 21 for the thrust block 10 to fall into.

[0046] The crossbar 30 is movably mounted on the side wall 22 and located at the front end of the locking groove 23;

[0047] Anti-false locking mechanism 40 includes an anti-false locking pin 41 movably connected to the crossbar 30, which is located when the thrust block 10 is in the non-parking position (including...). Figures 1 to 3 The driving position shown, and Figures 4 to 6 (The state shown is about to enter the parking position), the anti-false lock stop pin 41 covers the edge 230 of the lock stop groove 23;

[0048] As the thrust block 10 moves along the sliding surface 21 to the parking position, the crossbar 30 is pushed to drive the anti-false locking pin 41 to make way for the thrust block 10 to fall into the locking groove 23.

[0049] The aforementioned control device, through the cooperation of the anti-false locking mechanism 40, the crossbar 30, the thrust block 10, and the locking block 20, ensures that when the thrust block 10 is in a non-parking position (including the driving position and the process of entering the parking position from the driving position), the anti-false locking pin 41 blocks the edge 230 of the locking groove 23 to prevent the thrust block 10 from contacting the edge 230 of the locking groove 23 during parking braking, thereby effectively avoiding the "false locking" problem during parking braking. As the thrust block 10 moves along the sliding surface 21 to the parking position, the crossbar 30 is pushed to drive the anti-false locking pin 41 to make way for the thrust block 10 to fall into the locking groove 23, so that the thrust block 10 falls smoothly into the locking groove 23, allowing the control device to stably enter the parking state, thereby improving the stability and safety of parking braking.

[0050] Figure 10 The structure of the anti-false locking mechanism is shown. Figure 11 The structure of the sidewall of the locking block is shown; combined with Figures 1 to 11 As shown, in some embodiments, the side wall 22 is provided with a motion track 221 through which the crossbar 30 passes; the anti-false locking mechanism 40 also includes a connecting rod 42, which is disposed on the outer surface of the side wall 22 and connects the crossbar 30 and the anti-false locking pin 41; as the crossbar 30 moves along the motion track 221, the crossbar 30 drives the anti-false locking pin 41 to move through the connecting rod 42.

[0051] The motion track 221 is used for the crossbar 30 to pass through and be mounted on the side wall 22, and for the crossbar 30 to move stably under the push of the thrust block 10 / pull of the connecting rod 42. The connecting rod 42 is connected between the crossbar 30 and the anti-false locking pin 41, and is used to transmit the movement of the crossbar 30 to the anti-false locking pin 41, so that when the thrust block 10 pushes the crossbar 30, the anti-false locking pin 41 is driven to make way for the thrust block 10 to fall into the locking groove 23.

[0052] Continue to combine Figures 1 to 11 As shown, in some embodiments, the anti-false locking mechanism 40 further includes: a rotating arm 43 disposed on the outer surface of the side wall 22 and connected to the connecting rod 42; the anti-false locking pin 41 passes through the side wall 22 and is connected to the rotating arm 43; as the connecting rod 42 moves, the connecting rod 42 drives the anti-false locking pin 41 to rotate through the rotating arm 43.

[0053] The rotating arm 43 is connected between the connecting rod 42 and the anti-false locking pin 41. It is used to convert the movement of the connecting rod 42 into rotation and transmit it to the anti-false locking pin 41. When the thrust block 10 pushes the crossbar 30, the anti-false locking pin 41 is driven to rotate, so as to smoothly make way for the thrust block 10 to fall into the locking groove 23.

[0054] Continue to combine Figures 1 to 11 As shown, in some embodiments, the connecting rod 42 is connected to one end of the rotating arm 43, and the anti-false locking pin 41 is connected to the middle of the rotating arm 43; the anti-false locking mechanism 40 also includes: a return spring 44, which is disposed on the outer surface of the side wall 22 and connected to the other end of the rotating arm 43; as the rotating arm 43 rotates, the rotating arm 43 overcomes the force of the return spring 44 and drives the anti-false locking pin 41 to rotate; as the thrust block 10 exits the locking groove 23, the return spring 44 pulls the anti-false locking pin 41 back to its original position through the rotating arm 43.

[0055] The return spring 44 keeps the anti-false locking pin 41 in a state of blocking the edge 230 of the locking groove 23 when it is not in the parking position, so as to prevent the thrust block 10 from contacting the edge 230 of the locking groove 23 during the parking brake process; when the thrust block 10 moves along the sliding surface 21 to the parking position, the thrust block 10 pushes the crossbar 30, and the crossbar 30 drives the rotating arm 43 to rotate through the connecting rod 42, so that the rotating arm 43 overcomes the force of the return spring 44 and drives the anti-false locking pin 41. When pin 41 rotates, it causes the anti-false locking pin 41 to release the path for the thrust block 10 to fall into the locking groove 23. During parking, the anti-false locking pin 41 remains in the state of releasing the path, and the thrust block 10 is stably confined in the locking groove 23. When the thrust block 10 exits the locking groove 23, the anti-false locking pin 41 no longer acts on the return spring 44, so the return spring 44 pulls the anti-false locking pin 41 back to the edge 230 of the locking groove 23 through the rotating arm 43.

[0056] Continue to combine Figures 1 to 11As shown, in some embodiments, the anti-false locking mechanism 40 further includes: a limiting pin 222, which is disposed on the outer surface of the side wall 22; as the rotating arm 43 returns to its original position, the rotating arm 43 rotates to be limited to the limiting pin 222.

[0057] The limiting pin 222 causes the rotating arm 43 to return to its initial position and stop rotating, so that the anti-false locking pin 41 accurately returns to the edge 230 of the blocking locking groove 23.

[0058] Figure 12 The structure of the rotating arm is shown; combined with Figures 1 to 12 As shown, in some embodiments, a fixing pin 223 is also provided on the outer surface of the sidewall 22, and a return spring connecting hole 431 is provided at one end of the rotating arm 43. The two ends of the return spring 44 are respectively fixedly connected to the fixing pin 223 and the return spring connecting hole 431.

[0059] The two ends of the return spring 44 are stably connected by the fixing pin 223 and the return spring connecting hole 431, so that the return spring 44 can act stably on the rotating arm 43.

[0060] Figure 13 The structure of the connecting rod is shown, combined with Figures 1 to 13 As shown, in some embodiments, the connecting rod 42 is hinged to the crossbar 30 and the rotating arm 43; the rotating arm 43 is fixedly connected to the anti-false locking pin 41.

[0061] The connecting rod 42 is hinged to both the crossbar 30 and the rotating arm 43, allowing the connecting rod 42 to smoothly transmit motion between the crossbar 30 and the rotating arm 43; the anti-false locking pin 41 is fixedly connected to the rotating arm 43, allowing the anti-false locking pin 41 to rotate stably under the drive of the rotating arm 43.

[0062] Furthermore, continue to combine Figures 1 to 13 As shown, in some embodiments, one end of the connecting rod 42 is provided with a crossbar connecting hole 421, and the end of the crossbar 30 is rotatably inserted into the crossbar connecting hole 421; the other end of the connecting rod 42 is provided with a connecting pin 422, and the connecting pin 422 is rotatably inserted into the connecting rod connecting hole 432 of the rotating arm 43.

[0063] The connecting rod 42 and the crossbar 30 are hinged by rotatably inserting the end of the crossbar 30 into the crossbar connecting hole 421; the connecting rod 42 and the rotating arm 43 are hinged by rotatably inserting the connecting pin 422 into the connecting rod connecting hole 432 of the rotating arm 43.

[0064] Figure 14 The structure of the anti-counterfeiting lock stop pin is shown; combined with Figures 1 to 14As shown, in some embodiments, the rotating arm 43 is provided with an anti-false locking pin connection hole 433 in the middle; the anti-false locking pin 41 includes a connected rod 411 and an anti-false locking block 412. The rod 411 passes through the mounting hole 224 of the side wall 22 and is fixedly inserted into the anti-false locking pin connection hole 433. The anti-false locking block 412 is located on one side of the inner surface of the side wall 22.

[0065] The anti-false locking pin 41 is fixedly inserted into the anti-false locking pin connection hole 433 by the rod part 411, so as to achieve a fixed connection between the anti-false locking pin 41 and the rotating arm 43; the anti-false locking block 412 is located on one side of the inner surface of the side wall 22, which can block the edge 230 of the locking groove 23 when it is not in the parking position, and make way for the thrust block 10 to fall into the locking groove 23 when it is pushed and rotated.

[0066] Figure 15 The structure of the thrust block is shown; combined with Figures 1 to 15 As shown, in some embodiments, the side wall of the thrust block 10 is provided with a guide groove 11; the anti-false locking pin 41 includes a rod portion 411 connecting the crossbar 30 and an anti-false locking block 412 connecting the rod portion 411; as the crossbar 30 drives the anti-false locking pin 41 to move, the anti-false locking block 412 moves to the point where its extension direction is consistent with the extension direction of the guide groove 11, so as to slide into the guide groove 11 and make way for the falling path.

[0067] When the thrust block 10 moves along the sliding surface 21 to the parking position, the thrust block 10 pushes the crossbar 30, and the crossbar 30 drives the rotating arm 43 to rotate via the connecting rod 42. The rotating arm 43 further drives the anti-false locking pin 41 to rotate until the extension direction of the anti-false locking block 412 is consistent with the extension direction of the guide groove 11, so that the anti-false locking block 412 can slide into the guide groove 11 and make way for the falling path. The anti-false locking block 412 makes way for the falling path by sliding into the guide groove 11, which on the one hand allows the thrust block 10 to fall smoothly into the locking groove 23, and on the other hand, it plays a limiting role for the thrust block 10, ensuring that the thrust block 10 is stably kept in the locking groove 23 during parking and will not fall out.

[0068] In the above embodiments, the sidewalls 22 may include a pair of protruding from both sides of the sliding surface 21, and the anti-false locking mechanism 40 may include a pair of sidewalls 22 symmetrically arranged about the thrust block 10; the crossbar 30 is mounted on the pair of sidewalls 22 and its two ends are connected to the pair of anti-false locking mechanisms 40 through a pair of motion rails 221.

[0069] The anti-false locking mechanism 40 is symmetrically arranged on both sides of the locking block 20 with the thrust block 10 as the center of symmetry. The crossbar 30 passes through the symmetrically opened motion tracks 221 on both sides of the locking block 20 and is connected to the anti-false locking mechanism 40 symmetrically arranged on both sides of the locking block 20. This design enables the crossbar 30 and the anti-false locking mechanism 40 to move stably under the action of the thrust block 10, thereby enabling the operating device to stably achieve parking brake.

[0070] In the above embodiments, when the thrust block 10 falls into the locking groove 23, the thrust block 10 abuts against the rear wall 233 of the locking groove 23 under the action of the torsion spring (not specifically shown in the figure), so that the thrust block 10 is stably held in the parking position.

[0071] In the above embodiments, the control device further includes a handle 15, and a thrust block 10 is fixedly connected to the end of the handle 15. The driver can control the control device through the handle 15.

[0072] In the above embodiments, the sliding surface 21 may be a curved surface, and the thrust block 10 is connected to a cam mechanism (not specifically shown in the figure) disposed in the locking block 20. When the handle 15 is pushed, the thrust block 10 can move along the curved surface of the locking block 20.

[0073] The process of using the control device includes:

[0074] When the driver pushes the handle 15 from the driving position to the parking position (locked position), the thrust block 10 moves along the sliding surface 21 of the locking block 20 following the handle 15. When it is about to enter the parking position, the lower end of the thrust block 10 is limited by the anti-false locking block 412 of the anti-false locking pin 41, and cannot fall into the locking groove 23 of the locking block 20. The anti-false locking block 412 blocks the edge 230 of the locking groove 23 to prevent the thrust block 10 from contacting the edge 230 of the locking groove 23 during the parking braking process. Continue pushing the handle 15, the front end of the thrust block 10 pushes the crossbar 30, causing the crossbar 30 to move along the motion track 221. Through the connecting rod 42 and the rotating arm 43, the anti-false locking pin 41 rotates against the force of the return spring 44. When the anti-false locking pin 41 rotates until the extension direction of the anti-false locking block 412 is consistent with the extension direction of the guide groove 11 of the thrust block 10, the anti-false locking block 412 slides into the guide groove 11, making way for the thrust block 10 to fall into the locking groove 23. Thus, the thrust block 10 falls smoothly into the locking groove 23 and returns under the action of the torsion spring until the rear wall of the thrust block 10 is against the rear wall 233 of the locking groove 23, so that the thrust block 10 and the handle 15 are stably maintained in the parking position, realizing the parking brake. When the driver pulls the handle 15 upward along the rear wall 233 of the locking groove 23 until it passes the highest point of the anti-false locking block 412, the thrust block 10 and the handle 15 return to the driving position along the sliding surface 21 under the action of the torsion spring, and the parking brake is released; at this time, the rotating arm 43 and the anti-false locking pin 41 rotate to the initial position under the action of the return spring 44, so that the anti-false locking block 412 covers the edge 230 of the locking groove 23.

[0075] This invention also provides a handbrake valve, which is configured with an operating device as described in any of the above embodiments. The features and principles of the operating devices described in any of the above embodiments can be applied to the handbrake valve of this embodiment; the features and principles of the operating devices already explained will not be repeated.

[0076] In summary, the operating device and hand brake valve provided by the present invention have the following beneficial effects:

[0077] Through the cooperation of the anti-false locking mechanism 40, the crossbar 30, the thrust block 10, and the locking block 20, when the thrust block 10 is in the non-parking position (including the driving position and the process of entering the parking position from the driving position), the anti-false locking pin 41 blocks the edge 230 of the locking groove 23 to prevent the thrust block 10 from contacting the edge 230 of the locking groove 23 during the parking braking process, thereby effectively avoiding the occurrence of "false locking" during parking braking; as the thrust block 10 moves along the sliding surface 21 to the parking position, the crossbar 30 is pushed to drive the anti-false locking pin 41 to make way for the thrust block 10 to fall into the locking groove 23, so that the thrust block 10 falls smoothly into the locking groove 23, and the operating device and handbrake valve stably enter the parking state, thereby improving the stability and safety of the parking brake.

[0078] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A handbrake valve operating device, comprising a thrust block and a locking block, characterized in that, The locking block is provided with a sliding surface for the thrust block to move, a side wall protruding from the sliding surface, and a locking groove located at the front end of the sliding surface for the thrust block to fall into. The control device also includes: A crossbar is movably mounted on the side wall and located at the front end of the locking groove; The anti-false locking mechanism includes an anti-false locking pin movably connected to the crossbar, wherein when the thrust block is in the non-parking position, the anti-false locking pin covers the edge of the locking groove; As the thrust block moves along the sliding surface to the parking position, the crossbar is pushed to cause the anti-false locking pin to make way for the thrust block to fall into the locking groove. The side wall has a movement track for the crossbar to pass through; the anti-false locking mechanism further includes a connecting rod, which is disposed on the outer surface of the side wall and connects the crossbar and the anti-false locking pin; as the crossbar moves along the movement track, the crossbar drives the anti-false locking pin to move through the connecting rod.

2. The operating device as claimed in claim 1, characterized in that, The anti-counterfeiting locking mechanism also includes: A rotating arm is disposed on the outer surface of the side wall and connected to the connecting rod; the anti-false locking pin passes through the side wall and is connected to the rotating arm. As the connecting rod moves, the connecting rod drives the anti-false locking pin to rotate via the rotating arm.

3. The operating device as described in claim 2, characterized in that, The connecting rod is connected to one end of the rotating arm, and the anti-false locking pin is connected to the middle of the rotating arm; The anti-counterfeiting locking mechanism also includes: A return spring is disposed on the outer surface of the sidewall and connected to the other end of the rotating arm; As the rotating arm rotates, it overcomes the force of the return spring and drives the anti-false locking pin to rotate. As the thrust block exits the locking groove, the return spring pulls the anti-false locking pin back into place via the rotating arm.

4. The operating device as described in claim 3, characterized in that, The anti-counterfeiting locking mechanism also includes: A limiting pin is provided on the outer surface of the sidewall; As the rotating arm returns to its original position, it rotates until it is limited to the limiting pin.

5. The operating device as described in claim 3, characterized in that, The outer surface of the sidewall is also provided with a fixing pin, and one end of the rotating arm is provided with a return spring connecting hole. The two ends of the return spring are respectively fixedly connected to the fixing pin and the return spring connecting hole.

6. The operating device as claimed in claim 2, characterized in that, The connecting rod is hinged to the crossbar and the rotating arm; The rotating arm is fixedly connected to the anti-false locking pin.

7. The operating device as claimed in claim 6, characterized in that, One end of the connecting rod is provided with a crossbar connecting hole, and the end of the crossbar can be rotatably inserted into the crossbar connecting hole; The other end of the connecting rod is provided with a connecting pin, which is rotatably inserted into the connecting rod connecting hole of the rotating arm.

8. The operating device as claimed in claim 2, characterized in that, The rotating arm is provided with a locking pin connection hole in the middle. The anti-counterfeiting lock stop pin includes a connected rod and an anti-counterfeiting lock block. The rod is fixedly inserted into the anti-counterfeiting lock stop pin connecting hole, and the anti-counterfeiting lock block is located on one side of the inner surface of the side wall.

9. The operating device as claimed in claim 1, characterized in that, The sidewall of the thrust block is provided with a guide groove; The anti-false locking pin includes a rod portion connecting the crossbar and an anti-false locking block connecting the rod portion; As the crossbar moves, the anti-false locking stop pin moves, and the anti-false locking stop block moves until its extension direction is consistent with the extension direction of the guide groove, so as to slide into the guide groove and make way for the falling path.

10. The operating device according to any one of claims 1-9, characterized in that, The sidewalls include a pair that protrude from both sides of the sliding surface, and the anti-false locking mechanism includes a pair of sidewalls that are symmetrically arranged about the thrust block. The crossbar is mounted on a pair of side walls and is connected at both ends to a pair of anti-false locking mechanisms.

11. The operating device as claimed in claim 1, characterized in that, When the thrust block falls into the locking groove, the thrust block abuts against the rear wall of the locking groove under the action of the torsion spring.

12. The operating device as claimed in claim 1, characterized in that, The sliding surface is curved, and the thrust block is connected to the cam mechanism disposed in the locking block.

13. The operating device as claimed in claim 1, characterized in that, Also includes: The handle, wherein the thrust block is fixedly connected to the end of the handle.

14. A handbrake valve, characterized in that, The handbrake valve is equipped with the operating device as described in any one of claims 1-13.

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