Hydraulic parking brake structure

Abstract

This invention relates to a hydraulic parking brake structure which includes an oil pump base and a brake handle pivoted on the oil pump base. The interior of the oil pump base has a piston chamber and a piston is slidably arranged in the piston chamber. The other end of the piston has a push rod and the brake handle can pivot between the braking position and the release position relative to the oil pump base. The brake handle is pivoted with a push rod mandrel which can be connected to the push rod. Moreover, the characteristic of this invention lies in a limit group that is set on the oil pump base. The limit group can selectively limit the push rod mandrel when the brake handle is at the braking position, so the brake handle does not return to the release position, generating the parking effect. By this simple structure, purely operating the guide post that directly limits the displacement of the push rod mandrel can rapidly complete the actions of parking and unparking.

Description

[Technical Field]

[0001] This invention pertains to a hydraulic brake parking technology, specifically a hydraulic brake parking structure that allows for quick action. Through a simple structure, parking and releasing can be easily accomplished after braking. [Previous Technology]

[0002] Note that with the advancement of vehicle technology and road surface improvement, the performance and quality of electric scooters, bicycles, electric-assisted bicycles or motor vehicles have been continuously improved, and the speed of vehicles has also been increased invisibly. As for the braking system of the aforementioned vehicles, it has gradually evolved from the traditional braking system that uses rubber to brake the calipers to the disc braking system. This type of braking system mainly uses calipers fixed to the vehicle body to clamp discs that are synchronized with the wheels. It can provide accurate feedback, faster braking effect, and more agile action. Moreover, the braking action of these disc braking systems has also evolved from the method of the brake lever driving the caliper through the cable to the method of using the brake lever to push the hydraulic oil, causing the hydraulic oil in the oil circuit to push the brake caliper to achieve the braking effect.

[0003] However, in order to prevent the vehicle from moving arbitrarily when parked, the vehicle needs to be in a parking state with continuous braking. At this time, the rider needs to hold the brake lever continuously to avoid releasing the brake. However, holding the brake lever for a long time is not only tiring, but also may cause improper release and disengagement of the parking position if not careful, which will have an adverse effect on parking safety. Therefore, existing hydraulic brake systems are usually designed with a parking structure. However, the design of the existing parking structure is relatively complex. Not only are there many components, but the manufacturing and assembly costs are also high. Furthermore, it makes it impossible to operate the parking function effectively, quickly and easily when performing or releasing the parking action, which directly affects the practicality of its parking function. Therefore, there is indeed a need for further improvement of the existing parking structure, which is also the subject to be explored in this invention.

[0004] Therefore, the inventor has continued to explore the aforementioned deficiencies and, based on years of experience in related technology and product design and manufacturing, has finally successfully developed a hydraulic brake parking structure after continuous efforts, thereby overcoming the inconvenience and trouble caused by the complex composition and difficult operation of existing parking structures. [Summary of the Invention]

[0005] Therefore, the main objective of this invention is to provide a hydraulic brake parking structure that can generate a parking effect by using friction after pressing, and has the advantages of simple structure and time-saving and labor-saving operation, thereby improving its practicality.

[0006] Another major objective of the present invention is to provide a hydraulic brake parking structure that can achieve the functions of simple and quick execution and release of parking, which not only has the effect of convenient operation, but also improves the overall safety.

[0007] To this end, the present invention mainly achieves the above-mentioned objectives and effects through the following technical means: it has an oil pump base and a brake handle pivotally mounted on the oil pump base; the oil pump base has a piston chamber inside, and a piston is slidably mounted in the piston chamber; the other end of the piston has a push rod; the brake handle can pivot relative to the oil pump base between a braking position and a release position; and the brake handle is pivotally mounted with a push rod spindle that can be connected to the push rod. The feature of the present invention is that:

[0008] A limiting group is provided on the oil pump base, and the limiting group can selectively restrict the push rod spindle when the brake lever is in the braking position, so that the brake lever will not return to the release position, thus generating a parking effect.

[0009] Through the specific implementation of the aforementioned technical means, the hydraulic brake parking structure of the present invention can selectively limit the positioning of the brake handle push rod spindle in the brake position by utilizing the guide post of the limiting group. This allows for quick completion of parking and releasing actions through a simple structure and operation. Not only is the structure extremely simple, but the operation is also very convenient, effectively improving its practicality and overall safety, and further enhancing its added value and economic benefits.

[0010] Furthermore, the present invention utilizes the following technical means to further achieve the aforementioned objectives and effects; which include:

[0011] The limiting assembly has an insertion hole at the center of the push rod spindle, and the limiting assembly has a guide post on the oil pump base that can be selectively inserted into the insertion hole, so that when the brake lever is in the braking position, the guide post can be selectively inserted into the insertion hole of the push rod spindle, thereby limiting the displacement of the push rod spindle of the brake lever.

[0012] The limiting assembly is formed with a guide hole on the oil pump base, and a cylinder is locked on the oil pump base. The cylinder has a sliding hole corresponding to the guide hole. A guide post supporting an elastic element is slidably installed in the sliding hole of the cylinder. A fastener is provided on the part of the guide post that extends out of the oil pump base so that the guide post will not arbitrarily come out.

[0013] The guide post has a limiting section that can selectively extend into the insertion hole of the push rod spindle.

[0014] A plastic bushing can be embedded in the periphery of the push rod spindle.

[0015] In order to enable your review committee to further understand the structure, features and other objects of the present invention, the following are preferred embodiments, which are described in detail below with reference to the drawings, so as to enable those skilled in the art to implement them.

Implementation Method

[0022] This invention relates to a hydraulic brake parking structure. The accompanying drawings illustrate specific embodiments and components of the invention. All references to front and rear, left and right, top and bottom, upper and lower, and horizontal and vertical are for convenience of description only and are not intended to limit the invention or restrict its components to any position or spatial orientation. The dimensions specified in the drawings and specification may be varied according to the design and requirements of specific embodiments of the invention without departing from the scope of the patent application, and are therefore not limited to this structure in the patent application.

[0023] The hydraulic brake parking structure of the present invention is configured as shown in Figures 1, 2 and 3. A selectively pressable brake handle (20) is pivotally mounted on an oil pump base (10). The brake handle (20) can push the hydraulic oil in a brake oil circuit (105) to generate a braking effect. The oil pump base (10) is provided with a limit group (30) that can selectively restrict the return action of the brake handle (20) after braking, so as to selectively generate a parking effect.

[0024] The pump base (10) has a piston chamber (100) [as shown in the third figure] for connecting to a brake fluid circuit (105) of a typical existing braking system. One end of the pump base (10) has a fastening member (11) for selectively fastening to the vehicle handle. Above the fastening member (11), the pump base (10) has a pivot seat (12). The pivot seat (12) utilizes a pivot (1) perpendicular to the axis of the fastening member (11). 3) The brake handle (20) is pivotally mounted on the pivot seat (12) of the oil pump base (10). Furthermore, a piston (15) supported by an elastic element (16) is slidably disposed in the piston chamber (100) of the oil pump base (10). The other end of the piston (15) has a push rod (17) corresponding to the brake handle (20). The push rod (17) has a locking part (18) at one end corresponding to the brake handle (20). The locking part (18) can be a threaded section.

[0025] The brake lever (20) has a pivot block (21) at one end corresponding to the oil pump base (10) for pivoting the aforementioned oil pump base (10) pivot (13), so that the brake lever (20) can be pivotally mounted on the pivot lug (12) of the oil pump base (10), allowing the brake lever (20) to pivot relative to the oil pump base (10) between a braking position and a release position [as shown in the third figure]. The lower end of the pivot block (21) of the brake lever (20) has a spindle hole (22) for pivoting a push rod spindle (23), and the push rod spindle (23) has a locking part (24) corresponding to the aforementioned push rod (17) locking part (18), such as a screw hole, so that the push rod (17) The end can be locked to the push rod spindle (23) so that when the brake handle (20) is pressed to the brake position, the brake handle (20) can push the piston (15) in the piston chamber (100) of the oil pump body (10) through the push rod (17) to compress the elastic element (16) [as shown in the sixth figure], and press the hydraulic oil in the oil pump body (10) into the brake oil circuit (105) to generate a braking effect. When the brake handle (20) is released to the release position, the piston (15) can be pushed by the restoring preload of the elastic element (16) to push the push rod (17) to actuate the brake handle (20) to reset, so that the hydraulic oil re-enters the piston chamber (100) and completes the action of releasing the brake.

[0026] As for the feature structure of the present invention, the limiting group (30) can be used to selectively limit the position of the push rod spindle (23) of the brake lever (20) when it is in the braking position, so that the piston (15) in the oil pump body (10) and the brake lever (20) will not immediately reset after braking and thus produce a parking effect. The limiting assembly (30) has a guide hole (31) formed on the oil pump base (10), and the guide hole (31) corresponds to the position of the push rod spindle (23) of the brake handle (20) when it is in the braking position. The oil pump base (10) is also fitted with a cylinder (32), which has a sliding hole (33) corresponding to the aforementioned guide hole (31). A guide post (35) supporting an elastic element (34) is slidably installed in the sliding hole (33) of the cylinder (32). Furthermore, the guide post (35) has a limiting section (36) that can selectively extend into the push rod spindle (23) of the brake handle (20). The guide post (35) extends out of the oil pump base. A fastener (37) is provided on one section of the pivot seat (12) of the body (10) to prevent the guide post (35) from arbitrarily dislodging. After being pressed, the elastic element (34) can generate a restoring force. Furthermore, the push rod spindle (23) of the brake handle (20) has an insertion hole (38) for selective insertion of the limiting section (36) of the aforementioned guide post (35) [as shown in Figure 6], so as to limit the position of the push rod spindle (23). According to some embodiments, a plastic bushing (39) can be embedded in the periphery of the push rod spindle (23), which can improve the abnormal noise caused by friction between the brake handle (20) and the push rod spindle (23) and increase its service life.

[0027] This allows for the construction of a simple and easy-to-operate hydraulic brake parking structure.

[0028] Through the aforementioned structural design, when the hydraulic brake parking structure of the present invention is actually applied, as shown in the third and fourth figures, in operation, when the brake lever (20) is pressed to the brake position, the brake lever (20) can push the piston (15) in the piston chamber (100) of the oil pump base (10) through the push rod (17) to compress the elastic element (16), and press the hydraulic oil in the oil pump base (10) into the brake oil circuit (105) to perform the braking action;

[0029] When there is a parking requirement, as shown in Figure 6, when the brake lever (20) is in the brake position as described above, the insertion hole (38) on the push rod spindle (23) of the brake lever (20) aligns with the guide post (35) on the limiting assembly (30) of the oil pump base (10). Then, the guide post (35) of the limiting assembly (30) is pressed towards the brake lever (20), so that the limiting section (36) of the guide post (35) is inserted into the insertion hole of the push rod spindle (23). Inside the socket (38), when the user slightly releases the brake lever (20), causing the piston (15) to retract due to the restoring action of the elastic element (16) [as shown in Figure 5], the push rod spindle (23) inserts into the socket (38) and the guide post (35) limit section (36) engages with each other, and the guide post (35) is affected by the friction of the adjacent wall surface and does not retract [as shown in part (A) of Figure 5], thus restricting the brake lever (20) to the brake position, thereby achieving the purpose of parking.

[0030] When it is necessary to release the parking action, as shown in Figure 6, the user slightly presses the brake lever (20) again to move it to the brake position, so that the limiting section (36) of the guide post (35) and the insertion hole (38) of the push rod spindle (23) no longer contact each other (as shown in part (B) of Figure 6). Since the friction between the limiting section (36) of the guide post (35) and the insertion hole (38) of the push rod spindle (23) is lost, the guide post (35) is reset by the restoring force of the elastic element (34), and the piston (15) is pushed back by the restoring force of the elastic element (16). The brake lever (20) is returned to the brake release position by the push rod (17) for the next braking action.

[0031] As can be seen from the above description of structure and operation, the hydraulic brake parking structure of the present invention can selectively limit the brake lever (20) push rod spindle (23) to be positioned at the brake position by using the guide post (35) of the limiting group (30). This allows the parking and releasing actions to be completed quickly through a simple structure and operation. The structure is extremely simple and the operation is also very convenient, effectively improving its practicality.

[0032] In summary, it can be understood that the present invention is a novel creation with excellent creativity. In addition to effectively solving the problems faced by the conventional users, it also greatly improves the efficacy. Moreover, no identical or similar products have been created or publicly used in the same technical field. At the same time, it has the effect of improving efficacy. Therefore, the present invention has met the requirements of "novelty" and "inventiveness" for invention patents, and an invention patent application has been filed in accordance with the law. [Simplified Explanation of the Diagram]

[0016] First figure: A three-dimensional external schematic diagram of the hydraulic brake parking structure of the present invention.

[0017] Figure 2: An exploded three-dimensional view of the hydraulic brake parking structure of the present invention, illustrating its composition and relative relationships.

[0018] Figure 3: A side view of the hydraulic brake parking structure of the present invention, illustrating its operational state after assembly.

[0019] Figure 4: Top view cross-sectional view of the hydraulic brake parking structure of the present invention before performing the braking action.

[0020] Figure 5: Top view cross-sectional schematic diagram of the hydraulic brake parking structure of the present invention performing the parking action.

[0021] Figure 6: Top cross-sectional view of the hydraulic brake parking structure of the present invention performing the action of releasing the parking brake.

Claims

1. A hydraulic brake parking structure, comprising a hydraulic pump base and a brake lever pivotally mounted on the hydraulic pump base, wherein the hydraulic pump base has a piston chamber, a piston is slidably disposed within the piston chamber, and a push rod is provided at the other end of the piston; the brake lever is pivotally rotatable relative to the hydraulic pump base between a braking position and a release position; and a push rod spindle pivotally mounted on the brake lever is connectable to the push rod, characterized in that: a limiting group is provided on the hydraulic pump base, and the limiting group can selectively restrict the push rod spindle when the brake lever is in the braking position, so that the brake lever does not return to the release position, thereby generating a parking effect.

2. The hydraulic brake parking structure as described in claim 1, wherein the limiting assembly has an insertion hole at the axis of the push rod spindle, and the limiting assembly has a guide post on the oil pump base that can be selectively inserted into the insertion hole, such that when the brake lever is in the braking position, the guide post can be selectively inserted into the insertion hole of the push rod spindle, thereby limiting the displacement of the push rod spindle of the brake lever.

3. The hydraulic brake parking structure as described in claim 2, wherein the limiting assembly has a guide hole formed on the oil pump base, and a cylinder is locked on the oil pump base, and the cylinder has a sliding hole corresponding to the guide hole, and a guide post supporting an elastic element is slidably installed in the sliding hole of the cylinder, and a fastener is provided at the end of the guide post extending out of the oil pump base to prevent the guide post from arbitrarily dislodging.

4. The hydraulic brake parking structure as described in claim 2 or 3, wherein the guide post has a limiting section that can selectively extend into the push rod spindle insertion hole.

5. The hydraulic brake parking structure as described in claim 1, 2 or 3, wherein a plastic bushing may be embedded around the push rod spindle.

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