A parking device

Abstract

This application discloses a parking device installed between the upper and lower brake lines, wherein the lower brake line is connected to the brake disc. The device includes a valve body, a piston, and a moving component. The valve body includes a main oil passage, a piston chamber, and a branch oil passage. The main oil passage communicates with the upper brake line and has a pressure relief hole and a replenishment hole connecting to the piston chamber. The branch oil passage communicates with the piston chamber and the lower brake line. The piston is placed in the piston chamber and has a first one-way oil seal and a sealing ring. The piston can move movably between a first position and a second position. When the piston is in the first position, the first one-way oil seal is located between the pressure relief hole and the replenishment hole, so that the pressure relief hole connects the main oil passage, the piston chamber, and the lower brake line. When the piston moves to the second position, the first one-way oil seal closes the communication channel between the pressure relief hole and the lower brake line. The moving component drives the piston to move between the first and second positions.

Description

Technical Field

[0001] This invention relates to braking devices, and more particularly to a parking device. Background Technology

[0002] With the increasing number of private cars, traffic congestion is common on the road. As a result, more and more people are choosing lighter and smaller two-wheeled motorcycles or electric vehicles for travel. Two-wheeled motorcycles or electric vehicles are usually equipped with a dual braking system, including a front wheel brake and a rear wheel brake, which can meet the braking needs of daily driving.

[0003] However, most two-wheeled motorcycles or electric vehicles do not have parking devices. Therefore, when parking on slopes, mountain roads, or uneven surfaces, the vehicles are prone to rolling away, which can easily cause accidents and vehicle damage. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a parking device that prevents two-wheeled motorcycles or electric vehicles from rolling away when parking on slopes, mountain roads, or uneven surfaces, thus avoiding accidents and vehicle damage. Furthermore, it enables multi-stage braking, allowing users to select the appropriate parking effect and braking force based on road conditions, improving the device's applicability and further enhancing parking stability.

[0005] To achieve the above objectives, the present invention provides a parking device installed between the upper and lower brake lines, wherein the lower brake line is connected to the brake disc. The device includes a valve body, a piston, and a moving component. The valve body includes a main oil passage, a piston chamber, and a branch oil passage. The main oil passage communicates with the upper brake line and has a pressure relief hole and a replenishment hole connecting to the piston chamber. The branch oil passage communicates with the piston chamber and the lower brake line. The piston is placed in the piston chamber and has a first one-way oil seal and a sealing ring. The piston is movably positioned in a first position and a second position. When the piston is in the first position, the first one-way oil seal is located between the pressure relief hole and the replenishment hole, so that the pressure relief hole connects the main oil passage, the piston chamber, and the branch oil passage. When the piston moves to the second position, the first one-way oil seal closes the communication channel between the pressure relief hole and the lower brake line. The moving component drives the piston to move between the first and second positions.

[0006] Furthermore, the diameter of the pressure relief hole is set at 0.5-1mm, and the diameter of the oil replenishment hole is set at 3-4mm.

[0007] Furthermore, the moving part includes a rocker arm, which is hinged to the valve body. An abutment portion is formed on one side of the rocker arm, and a receiving portion is formed at one end of the piston. The abutment portion abuts against the receiving portion.

[0008] Furthermore, a limit wall is formed on the side of the valve body near the piston, and the rocker arm can rotate relative to the valve body to the limit wall.

[0009] Furthermore, a contact switch is provided on the limiting wall. The contact switch is connected to external equipment. When the rocker arm rotates to the limiting wall, the abutting part abuts against the contact switch.

[0010] Furthermore, a spring is provided at the end of the piston away from the receiving part.

[0011] Furthermore, the sealing ring is a one-way sealing ring.

[0012] Furthermore, the piston is provided with a first limiting flange and a second limiting flange, one end of the first one-way oil seal abuts against the first limiting flange, and one end of the sealing ring abuts against the second limiting flange.

[0013] Furthermore, the moving part includes an electric telescopic rod, one end of which is connected to one end of the piston, so that the electric telescopic rod drives the piston to move.

[0014] Furthermore, a limiting protrusion is provided at the end of the oil passage near the piston.

[0015] The beneficial effects of this invention are as follows:

[0016] This parking device prevents motorcycles or electric vehicles from rolling away when parking on slopes, mountain roads, or uneven surfaces, thus avoiding accidents and vehicle damage. Furthermore, it provides multi-stage braking, allowing users to select the appropriate parking effect and braking force based on road conditions, enhancing the device's versatility and further improving parking stability. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this invention, illustrate exemplary embodiments of the invention and, together with their description, serve to explain this application and do not constitute an undue limitation of the invention. In the drawings:

[0018] Figure 1 This is an installation diagram of the present invention;

[0019] Figure 2 This is a partial cross-sectional view of the piston in the first position in one embodiment of the present invention;

[0020] Figure 3 yes Figure 2 A partial cross-sectional view of the piston in the second position in the illustrated embodiment;

[0021] Figure 4 yes Figure 2 A cross-sectional view of the piston in the illustrated embodiment;

[0022] Figure 5 yes Figure 2 The diagram shows the structure of the rocker arm in the embodiment shown.

[0023] Figure 6 This is a partial cross-sectional view of the piston in the first position in another embodiment of the present invention;

[0024] Figure 7 yes Figure 6 A partial cross-sectional view of the piston in the second position in the illustrated embodiment.

[0025] The components are as follows: 10. Valve body; 101. Main oil passage; 102. Piston chamber; 103. Branch oil passage; 104. Pressure relief hole; 105. Oil replenishment hole; 106. Limiting wall; 107. Contact switch; 108. Limiting protrusion; 20. Piston; 201. First one-way oil seal; 202. Sealing ring; 203. Receiving part; 204. Spring; 205. First limiting flange; 206. Second limiting flange; 30. Moving part; 301. Rocker arm; 302. Abutment part; 303. Electric telescopic rod; 401. Upper oil pipe; 402. Lower oil pipe; 403. Brake disc; 404. Master brake pump. Detailed Implementation

[0026] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0028] Furthermore, in the description of this invention, it should be understood that the terms "top," "bottom," "inner," "outer," "axial," "upper," "lower," "radial," "circumferential," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0029] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0030] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "implementation," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0031] In this invention, such as Figures 1 to 7 As shown, a parking device is provided, which is installed between an upper brake line 401 and a lower brake line 402, wherein the lower brake line 402 is connected to a brake disc 403. The parking device includes a valve body 10, a piston 20, and a moving part 30. The valve body 10 includes a main oil passage 101, a piston chamber 102, and a branch oil passage 103. The main oil passage 101 communicates with the upper brake line 401 and is provided with a pressure relief hole 104 and a replenishment hole 105 communicating with the piston chamber 102. The branch oil passage 103 communicates with the piston chamber 102 and is also connected to the lower brake line 402. The piston 20 is positioned... The piston chamber 102 and the piston 20 are provided with a first one-way oil seal 201 and a sealing ring 202. The piston 20 can be movably positioned in a first position and a second position. When the piston 20 is in the first position, the first one-way oil seal 201 is located between the pressure relief hole 104 and the oil replenishment hole 105, so that the pressure relief hole 104 connects the main oil passage 101, the piston chamber 102 and the branch oil passage 103. When the piston 20 moves to the second position, the first one-way oil seal closes the communication channel between the pressure relief hole 104 and the lower oil pipe 402. The moving part 30 drives the piston 20 to move between the first position and the second position.

[0032] In one embodiment, such as Figure 1 , 2 As shown in Figure 3, the brake lines of a two-wheeled motorcycle or two-wheeled electric vehicle are divided into an upper oil line 401 and a lower oil line 402. The lower oil line 402 is connected to the brake disc 403, and the upper oil line is connected to the brake master pump 404. The device is installed between the upper and lower oil lines. The valve body 10 on the device includes a main oil line 101, a piston chamber 102, and a branch oil line 103. The main oil line 101 is connected to the upper oil line 401, and the piston chamber 102 is connected to the main oil line 101 and the branch oil line 103. The main oil line 101 is provided with a pressure relief hole 104 and a replenishment hole 105, which are connected to the piston chamber 102. The piston 20 is placed in the piston chamber 102 and can move in the piston chamber 102.

[0033] Before the device is used, the piston 20 is in the first position in the piston chamber 102. In this position, the first one-way oil seal 201 on the piston 20 is placed between the pressure relief hole 104 and the oil replenishment hole 105 to prevent it from blocking the connection between the main oil passage 101 and the piston chamber 102. In addition, the piston chamber 102 is connected to the branch oil passage 103, so that the brake fluid passes normally through the upper oil passage, the main oil passage 101, the piston chamber 102, the branch oil passage 103 and the lower oil passage. When the vehicle is parked, the moving part 30 moves the piston 20 from the first position to the second position. At this position, the first one-way oil seal 201 on the piston 20 seals the pressure relief hole 104. The piston 20 then continues to move, thereby pressurizing the distributor passage 103. The distributor passage 103 transmits the pressure to the lower oil pipe 402, which ultimately acts on the brake disc 403, locking the brake disc 403. At this time, if the braking force is weak when parking, the braking force can be increased by pressurizing the brake fluid master cylinder 404. The brake fluid enters around the piston 20 through the replenishment hole 105 on the master oil passage 101. Since the sealing ring 202 seals the oil pressure, the oil pressure enters the distributor passage 103 through the first one-way oil seal 201, thereby increasing the locking force of the brake disc 403, thus achieving greater parking braking force and ensuring parking stability. When it is necessary to release the parking brake, the moving part 30 is used to drive the piston 20 to move in the opposite direction, so that the first one-way oil seal 201 can be released from the pressure relief hole 104, allowing the brake fluid to flow through, thereby releasing the oil pressure in the lower oil pipe 402 and the oil distribution channel 103, releasing the brake disc 403, and allowing the vehicle to drive normally.

[0034] This parking device prevents two-wheeled motorcycles or electric vehicles from rolling away when parking on slopes, mountain roads, or uneven surfaces, thus avoiding accidents and vehicle damage. Furthermore, by incorporating a first one-way oil seal 201, a sealing ring 202, an oil filler hole 105, and their interaction with the piston 20 and pressure relief hole 104, a multi-stage braking effect is achieved. This allows for selection of appropriate parking effect and braking force based on road conditions, improving the device's applicability and further enhancing parking stability.

[0035] In a preferred embodiment, such as Figure 2 As shown, the diameter of the pressure relief hole 104 is set at 0.5-1mm, and the diameter of the oil replenishment hole 105 is set at 3-4mm.

[0036] In the above structure, the pressure relief hole 104 has a smaller diameter, while the oil replenishment hole 105 has a larger diameter. On the one hand, this allows brake fluid to enter the piston chamber 102 in sufficient and timely manner through the larger diameter oil replenishment hole 105 when the parking braking force is increased, and then enter the oil distribution channel 103, stably increasing the oil pressure and further improving the braking force. This results in better continuity and stability when increasing the parking braking force, improving its reaction time and avoiding the phenomenon of the vehicle rolling away due to the untimely response when the parking braking force is increased, which can easily cause traffic accidents. On the other hand, the smaller diameter pressure relief hole 104 can slow down the flow rate of the brake fluid when replenishing or returning through the pressure relief hole 104 when the parking brake is released, thereby slowing down the oil pressure release process and the time to release the brake disc 403. This achieves the effect of slowly releasing the parking brake and avoids the vehicle quickly losing its parking ability after the parking brake is released, which can easily lead to the vehicle rolling away before an effective braking device is activated.

[0037] In another embodiment, a tapered channel is formed at the bottom of the main oil passage 101, a pressure relief hole 104 is provided at the bottom of the tapered channel, and an inclined hole is formed on the side wall of the main oil passage 101 to form an oil replenishment hole 105. The bottom of the main oil passage 101 is provided with a tapered channel, which increases the flow velocity and oil pressure of the brake fluid as it passes through the channel due to the reduced channel width. When the pressure relief hole 104 is closed, the oil pressure at this point enters the piston chamber 102 from the oil replenishment hole 105 and acts on the branch oil passage 103 through the first one-way oil seal 201, thereby improving the parking braking force. An oblique hole is provided on the side wall of the main oil passage 101, extending it between the first one-way oil seal 201 and the sealing ring 202, separating the oil replenishment hole 105 and the pressure relief hole 104 to facilitate the parking process. In addition, after the pressure relief hole 104 is closed, some of the oil accumulates in the tapered channel. Therefore, when replenishing the oil, the oil directly enters the oblique hole. The oblique hole can increase the flow velocity of the oil, thereby accelerating the replenishment response.

[0038] By setting a larger oil replenishment hole 105 and a smaller pressure relief hole 104, the device can effectively achieve a rapid and powerful response when increasing parking braking force, and a slow release when releasing the parking brake to avoid vehicle slippage.

[0039] In a preferred embodiment, such as Figure 2 , 4 As shown in Figure 5, the moving part 30 includes a rocker arm 301, which is hinged to the valve body 10. An abutment portion 302 is formed on one side of the rocker arm 301, and a receiving portion 203 is formed at one end of the piston 20. The abutment portion 302 abuts against the receiving portion 203.

[0040] In the above structure, the moving component 30 includes a rocker arm 301 hinged to the valve body 10. By rotating the rocker arm 301, the abutment portion 302 at one end of the rocker arm 301 abuts against the receiving portion 203 at one end of the piston 20. Further rotation of the rocker arm 301 applies force to the abutment portion 302 and the receiving portion 203, thereby causing the piston 20 to move. The rotation of the rocker arm 301 drives the movement of the piston 20. When the piston 20 is in the first position, the abutment portion 302 and the receiving portion 203 of the rocker arm 301 are separated. When parking, rotating the rocker arm 301 pushes the piston 20 from the first position to the second position, thus performing the corresponding operation when parking.

[0041] In one embodiment, one end of the rocker arm 301 is hinged to the valve body 10, thereby increasing the torque and facilitating the movement of the piston 20 to complete the parking. Using the rocker arm 301, operation is convenient and easy to implement, while ensuring the movement effect of the piston 20.

[0042] To be more specific, such as Figure 2 As shown, a limiting wall 106 is formed on one end of the valve body 10 near the piston 20, and the rocker arm 301 can rotate relative to the valve body 10 to the limiting wall 106.

[0043] A limiting wall 106 is provided at one end of the valve body 10. After the rocker arm 301 rotates to a certain angle, the abutting part 302 of the rocker arm 301 can abut against the limiting wall 106 to restrict the rocker arm 301 from continuing to rotate, thereby limiting the movement distance of the piston 20. This prevents the oil pressure in the oil channel 103 from being too high due to the piston 20 moving too far, which would increase the load on the brake disc 403 and easily lead to damage to the brake disc 403, reduce the service life of the brake disc 403, or even cause the brake disc 403 to fail, which could easily cause an accident.

[0044] In a preferred embodiment, such as Figure 2 , 3 As shown, a contact switch 107 is provided on the limiting wall 106. The contact switch 107 is connected to external equipment. When the rocker arm 301 rotates to the limiting wall 106, the abutment part 302 abuts against the contact switch 107.

[0045] In the above structure, a contact switch 107 is provided on the limiting wall 106. When the rocker arm 301 rotates to the point where its abutting part 302 abuts against the limiting wall 106, the rocker arm 301 abuts against the contact switch 107, thereby opening the contact switch 107 and transmitting relevant information to the outside. When the rocker arm 301 rotates in the opposite direction and the abutting part 302 separates from the contact switch 107, the contact switch 107 closes, thereby pausing the transmission of relevant information to the outside.

[0046] In one embodiment, the contact switch 107 is connected to the parking status indicator light. When the rocker arm 301 abuts the contact switch 107, the parking status indicator light illuminates, thereby reminding the driver that the vehicle is in a parked state.

[0047] In a preferred embodiment, such as Figure 2 As shown, a spring 204 is provided at the end of the piston 20 away from the receiving part 203.

[0048] A spring 204 is provided at one end of the piston 20 near the oil distribution channel 103. When the vehicle is parked, the piston 20 moves toward the oil distribution channel 103, compressing the spring 204. At this time, the spring 204 can play a role in buffering and limiting. When the vehicle is in parking position, the piston 20 is released by the force of the rocker arm 301, and the spring 204 returns to its original position, generating a force in the opposite direction to help push the piston 20 back to its original position, thus facilitating the next parking and ensuring the normal operation of the parking process.

[0049] In a preferred embodiment, the sealing ring 202 is a one-way sealing ring 202.

[0050] During parking, the sealing ring 202 can prevent brake fluid from flowing out towards the moving part 30, thereby contaminating the moving part 30 and causing it to stick and become blocked, thus affecting the movement of the piston 20 and consequently the entire parking process. In addition, by setting the sealing ring 202 as a one-way sealing ring 202, in some aspects, when the moving part 30 drives the piston 20 to move, the air pressure generated by the friction of the piston 20 can enter the sealing cavity through the sealing ring 202, thereby increasing the braking capacity to a certain extent.

[0051] In a preferred embodiment, such as Figure 4 As shown, the piston 20 is provided with a first limiting flange 205 and a second limiting flange 206. One end of the first one-way oil seal 201 abuts against the first limiting flange 205, and one end of the sealing ring 202 abuts against the second limiting flange 206.

[0052] With the first one-way oil seal 201 installed on the first limiting flange 205 and the sealing ring 202 installed on the second limiting flange 206, the first one-way oil seal 201 and the sealing ring 202 can be effectively limited and fixed. This prevents the first one-way oil seal 201 and the sealing ring 202 from easily moving due to friction during the movement of the piston 20, thus losing their original positions and affecting the sealing of the pressure relief hole 104 and the oil replenishment hole 105. Consequently, this affects the oil pressure change of the oil distribution channel 103 when parking, weakening the parking effect.

[0053] In a preferred embodiment, such as Figure 6 , 7As shown, the moving part 30 includes an electric telescopic rod 303, one end of which is connected to one end of the piston 20, so that the electric telescopic rod 303 drives the piston 20 to move.

[0054] In the above embodiment, the moving part 30 that drives the piston 20 to move includes an electric telescopic rod 303. By controlling the extension and retraction of the electric telescopic rod 303, the piston 20 is driven to move. Using the electric telescopic rod 303 facilitates the automated control of the parking device and helps to improve the parking efficiency and stability.

[0055] To be more specific, such as Figure 6 As shown, the oil distribution channel 103 has a limiting protrusion 108 at one end near the piston 20.

[0056] In one embodiment, when the piston 20 is moved by the telescopic rod, the electric telescopic rod 303 is extended to move the piston 20, thereby causing the first one-way oil seal 201 to close the pressure relief hole 104, thereby increasing the oil pressure in the oil distribution channel 103 and completing the parking process. At this time, it is necessary to prevent the piston 20 from moving excessively, which would cause the oil pressure in the oil distribution channel 103 to increase excessively, thereby increasing the load on the brake disc 403 and affecting the normal use of the brake disc 403. Therefore, a limiting protrusion 108 is provided at one end of the oil distribution channel 103 near the piston 20 to restrict the movement of the piston 20 and improve the stable parking capability.

[0057] For any parts not mentioned in this invention, existing technologies can be used or referenced.

[0058] The above description is merely an embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A parking device, installed between an upper brake line and a lower brake line, wherein the lower brake line is connected to a brake disc, characterized in that, include: The valve body includes a main oil passage, a piston chamber, and a branch oil passage. The main oil passage is connected to the upper oil pipe and is provided with a pressure relief hole and a replenishment hole that connect to the piston chamber. The branch oil passage is connected to the piston chamber and to the lower oil pipe. A piston is placed in the piston chamber. The piston is provided with a first one-way oil seal and a sealing ring. The piston is movable to a first position and a second position. When the piston is in the first position, the first one-way oil seal is located between the pressure relief hole and the oil replenishment hole, so that the pressure relief hole connects the main oil passage, the piston chamber, and the oil distribution passage. When the piston moves to the second position, the first one-way oil seal closes the communication channel between the pressure relief hole and the lower oil pipe. A moving component, which drives the piston to move between the first position and the second position; The diameter of the pressure relief hole is set at 0.5-1mm, and the diameter of the oil replenishment hole is set at 3-4mm.

2. The parking device according to claim 1, characterized in that: The moving component includes a rocker arm, which is hinged to the valve body. An abutment portion is formed on one side of the rocker arm, and a receiving portion is formed at one end of the piston. The abutment portion abuts against the receiving portion.

3. The parking device according to claim 2, characterized in that: The valve body has a limiting wall formed on one end near the piston, and the rocker arm can rotate relative to the valve body to the limiting wall.

4. The parking device according to claim 3, characterized in that: The limiting wall is equipped with a contact switch, which is connected to an external device. When the rocker arm rotates to the limiting wall, the abutting part abuts against the contact switch.

5. The parking device according to claim 2, characterized in that: A spring is provided at the end of the piston away from the receiving part.

6. The parking device according to claim 1, characterized in that: The sealing ring is a one-way sealing ring.

7. The parking device according to claim 6, characterized in that: The piston is provided with a first limiting flange and a second limiting flange. One end of the first one-way oil seal abuts against the first limiting flange, and one end of the sealing ring abuts against the second limiting flange.

8. The parking device according to claim 1, characterized in that: The moving component includes an electric telescopic rod, one end of which is connected to one end of the piston, so that the electric telescopic rod drives the piston to move.

9. The parking device according to claim 8, characterized in that: The oil distribution channel is provided with a limiting protrusion at one end near the piston.

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