Bicycle oil pressure brake handle structure

Abstract

The utility model belongs to the technical field of bicycles, and discloses a bicycle oil pressure brake handle structure which comprises a brake handle seat, a connecting shaft is arranged at the top of the brake handle seat, a downward pressing arm is arranged outside the connecting shaft, a handle is arranged on the outer side of the downward pressing arm, the brake handle seat comprises a cylinder body, an oil cylinder is hinged to an inner cavity of the cylinder body, and the oil cylinder is connected with the connecting shaft. A piston is arranged in the oil cylinder, and the top of the piston extends out of the oil cylinder and is hinged to the bottom of the lower pressing arm. According to the utility model, the oil cylinder and the handle are arranged, when an operator tightly holds the handle, the handle rotates around the connecting shaft for rotating the downward pressing arm, the oil cylinder is extruded through the downward pressing arm, and the swing angle of the oil cylinder is correspondingly increased along with the gradual increase of the rotation angle of the handle, so that the motion force arm of the piston in the oil cylinder is lengthened; and under the condition that the torque required by braking is not changed, the force arm is lengthened, and the holding force applied to the handle by the hand of a rider can be reduced, so that a lighter hand feeling is realized.

Description

TECHNICAL FIELD

[0001] The utility model belongs to bicycle technical field, specifically a bicycle oil pressure brake handle structure. BACKGROUND

[0002] The bicycle is a two -wheeled vehicle driven by human power pedal, is widely used in traffic, sports fitness, leisure and entertainment etc. field, its simple structure, environmental protection and energy saving, is one of the most popular traffic tools in the world;

[0003] The prior art bicycle is provided with oil pressure brake handle structure on both sides of the head during use, provides stable braking for the bicycle, squeezes brake handle, drives piston to move in the cylinder, thereby squeezes hydraulic oil, pressure is transmitted to brake caliper, and the braking of the bicycle is completed, however, the traditional oil pressure brake handle increases the gripping force required by the operator with the increase of the rotating angle of the handle in the use process, which leads to more laborious brake operation, and the long time riding or emergency braking leads to difficult control and easy safety problems, therefore, it needs to be improved. CONTENT OF THE UTILITY MODEL

[0004] In order to solve the problems in the above background art, the utility model provides a bicycle oil pressure brake handle structure.

[0005] In order to achieve the above object, the utility model provides the following technical scheme: a bicycle oil pressure brake handle structure, including brake handle seat, the brake handle seat top is provided with connecting shaft, the connecting shaft outside is provided with the down pressure arm, the down pressure arm outside is provided with handle;

[0006] Among them, the brake handle seat includes cylinder, the oil cylinder is hinged in the cylinder cavity, the piston is provided in the oil cylinder, and the piston top extends to the outside of the oil cylinder and is hinged with the bottom of the down pressure arm.

[0007] Preferably, the oil cylinder is provided with a reset spring, and the other end of the reset spring is connected with the outer side of the piston.

[0008] Preferably, the oil cylinder is circular in shape, and the outer side of the oil cylinder is movably connected with the inner wall of the cylinder.

[0009] Preferably, the oil cylinder cavity is provided with hydraulic oil, and the oil cylinder outer side is communicated with the oil pipe.

[0010] Preferably, the cylinder is conical in shape, and the upper inner diameter of the cylinder is greater than the lower inner diameter.

[0011] Preferably, the cylinder is provided with a spring sheet on the inner side, and the other end of the spring sheet is connected with the outer side of the oil cylinder.

[0012] Compared with the prior art, the utility model has the beneficial effects as follows:

[0013] This utility model is equipped with a hydraulic cylinder and a handle. When the operator grips the handle, the handle rotates around the connecting shaft of the rotating lower pressure arm, which in turn squeezes the hydraulic cylinder through the lower pressure arm. As the rotation angle of the handle gradually increases, the swing angle of the hydraulic cylinder also increases accordingly, which makes the movement lever arm of the piston in the hydraulic cylinder longer. Through the lever principle, with the braking torque remaining unchanged, the lever arm becomes longer, and the gripping force applied by the rider's hand on the handle can be reduced, thereby achieving a lighter feel. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a front cross-sectional view of the present invention.

[0016] In the diagram: 1. Brake lever seat; 101. Cylinder body; 102. Hydraulic cylinder; 103. Piston; 104. Return spring; 2. Handle; 3. Lower pressure arm. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Example 1

[0019] like Figure 1 and Figure 2 As shown, this is the first embodiment of the utility model, which provides a bicycle hydraulic brake lever structure, including a brake lever seat 1, a connecting shaft on the top of the brake lever seat 1, a lower pressure arm 3 outside the connecting shaft, and a handle 2 outside the lower pressure arm 3.

[0020] Among them, the brake lever seat 1 includes a cylinder body 101, a hydraulic cylinder 102 is hinged to the inner cavity of the cylinder body 101, a piston 103 is provided inside the hydraulic cylinder 102, and the top of the piston 103 extends to the outside of the hydraulic cylinder 102 and is hinged to the bottom of the lower pressure arm 3.

[0021] When the operator holds the handle 2, the handle 2 rotates to drive the pressing arm 3 to press the piston 103, and due to the hinging between the oil cylinder 102 and the cylinder body 101, the pressing arm 3 pushes the piston 103 to move right in the oil cylinder 102, compressing the hydraulic oil in the oil cylinder 102. As the rotation angle of the handle 2 gradually increases, the swing angle of the oil cylinder 102 also increases accordingly, and the movement arm of the piston 103 in the oil cylinder 102 becomes longer. According to the principle of lever, under the condition that the required braking torque is unchanged, the lengthening of the force arm can reduce the gripping force of the operator's hand on the pressing arm 3, so that a greater piston 103 thrust can be generated under the action of the same hand gripping force, realizing a lighter feeling.

[0022] Embodiment 2

[0023] As shown in Figure 2 , this embodiment includes the features of embodiment 1, and the technical feature is that a reset spring 104 is arranged inside the oil cylinder 102, and the other end of the reset spring 104 is connected to the outside of the piston 103.

[0024] When the operator releases the pressing arm 3, the elastic force of the reset spring 104 drives the piston 103 to reset, preparing for the next braking.

[0025] The outer shape of the oil cylinder 102 is circular, and the outer side of the oil cylinder 102 is movably connected to the inner wall of the cylinder body 101.

[0026] When the operator holds or releases the pressing arm 3, the handle 2 drives the oil cylinder 102 to swing left and right inside the cylinder body 101, which is used to change the angle of the oil cylinder 102 and adjust the lever ratio of the piston 103, so that the braking is more convenient, and the swing of the oil cylinder 102 makes the movement arm of the piston 103 longer. Under the action of the same hand gripping force, due to the increase of the piston 103 thrust, the hydraulic oil is more forcefully squeezed, so that it is delivered to the brake clamp through the oil pipe, so that the brake pad generates greater clamping force on the disc, thereby realizing greater braking force, ensuring that fast and stable braking can be realized in various riding scenes, and ensuring riding safety.

[0027] The inner cavity of the oil cylinder 102 is provided with hydraulic oil, and the outer side of the oil cylinder 102 is connected with an oil pipe.

[0028] When the operator brakes, the handle 2 and the pressing arm 3 squeeze the piston 103, the piston 103 squeezes the hydraulic oil, which is delivered to the brake clamp through the oil pipe, so that the brake pad brakes the bicycle.

[0029] The outer shape of the cylinder body 101 is conical, and the inner diameter of the cylinder body 101 is larger at the top than at the bottom.

[0030] When the oil cylinder 102 swings, the cylinder body 101 is convenient to swing and is not hindered through a large range of the inner diameter of the cylinder body 101.

[0031] The spring sheet is connected to the outer side of the oil cylinder 102 at the other end;

[0032] When the handle 2 is held, the oil cylinder 102 extrudes the spring sheet, and the spring sheet is in an extrusion state, so that the spring force is applied to the oil cylinder 102, the oil cylinder 102 is conveniently reset to the initial position, the lever ratio is restored to the initial state, the brake system is released, and the next braking operation is waited.

[0033] The working principle and use process of the utility model are as follows:

[0034] Firstly, when the operator brakes the bicycle, the handle 2 is held, the handle 2 drives the lower pressing arm 3 to rotate around the connecting shaft, and then the lower pressing arm 3 extrudes the oil cylinder 102 to rotate in the cylinder body 101, the movement arm of the piston 103 is lengthened with the swinging of the oil cylinder 102, greater piston 103 thrust can be generated under the action of the same hand holding force, so that lighter hand feeling is realized, and because the piston 103 thrust is increased, the hydraulic oil in the inside is more powerfully extruded to pass through the oil pipe and is transmitted to the brake clamp, the brake pad in the brake clamp is pushed to generate greater clamping force on the disc, and greater braking force is realized, so that the angle of the oil cylinder 102 is adjusted to change the lever ratio, the holding force required by the operator to be applied in the braking process is effectively reduced, the brake operation is more relaxed and labor-saving, is especially suitable for long-time riders and riders with small holding force, the comfort and controllability of riding are obviously improved, and with the optimization of the lever ratio, the piston 103 can generate greater thrust to transmit more hydraulic oil pressure to the brake clamp, so that the brake pad generates greater clamping force on the disc, the braking performance of the brake system is greatly improved, and the riding safety is ensured.

[0035] It should be noted that, in the present document, the terms such as first and second, etc., are merely used to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0036] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bicycle oil brake lever structure comprising a brake lever seat (1), characterized in that: The brake handle seat (1) top is provided with a connecting shaft, the connecting shaft is externally provided with a pressing arm (3), the pressing arm (3) is externally provided with a handle (2); Wherein, the brake handle seat (1) includes a cylinder body (101), the oil cylinder (102) is hinged in the inner cavity of the cylinder body (101), the oil cylinder (102) is internally provided with a piston (103), the piston (103) top extends to the outside of the oil cylinder (102) and is hinged with the bottom of the pressing arm (3).

2. The oil pressure brake structure for a bicycle according to claim 1, wherein: The oil cylinder (102) is internally provided with a reset spring (104), and the other end of the reset spring (104) is connected with the outside of the piston (103).

3. The oil pressure brake structure for a bicycle according to claim 1, wherein: The oil cylinder (102) is circular in shape, and the outer side of the oil cylinder (102) is movably connected with the inner wall of the cylinder body (101).

4. The oil pressure brake structure for a bicycle according to claim 1, wherein: The inner cavity of the oil cylinder (102) is provided with hydraulic oil, and the outer side of the oil cylinder (102) is communicated with an oil pipe.

5. The oil pressure brake structure for a bicycle according to claim 1, wherein: The cylinder body (101) is conical in shape, and the upper inner diameter of the cylinder body (101) is greater than the lower inner diameter.

6. The oil pressure brake structure for a bicycle according to claim 1, wherein: The inner side of the cylinder body (101) is provided with a spring piece, and the other end of the spring piece is connected with the outer side of the oil cylinder (102).

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