Brake lever device

Abstract

The utility model discloses a brake pull rod device relates to bicycle technical field. Include: pull rod base, pull rod base is connected with handlebar rotation, pull rod body, pull rod body is connected with pull rod base rotation, first limit slot, first limit slot sets up in pull rod base one end close to pull rod body, second limit slot, second limit slot sets up in pull rod body one end close to pull rod base and is matched with first limit slot, opening degree adjustment subassembly, opening degree adjustment subassembly sets up on pull rod base, limit top rod, limit top rod includes coaxial movable end and fixed end, and the fixed end is contacted with second limit slot one end away from first limit slot, and movable end is inserted into first limit slot, pull rod spring, pull rod spring is set up on movable end, and both ends of pull rod spring are contacted with first limit slot and fixed end. The utility model can adjust the rotation angle of pull rod body flexibly, adapts the operating habit and hand size of different drivers, and promotes the operation comfort.

Description

Technical Field

[0001] This utility model relates to the field of bicycle technology, and in particular to a brake lever device. Background Technology

[0002] The brake lever is a key operating component in the braking system of two-wheeled vehicles (such as motorcycles and electric vehicles). The driver operates the brake lever to actuate the braking mechanism, thereby slowing down or stopping the vehicle. Existing brake lever devices have the following shortcomings: the rotation angle (opening) of the brake lever is usually a fixed value, which cannot be customized according to different driver hand sizes and operating habits, resulting in poor operating comfort and safety; some brake lever devices lack a parking brake function, requiring the vehicle to rely on a side stand or foot brake for parking, which can easily lead to the risk of the vehicle rolling away in special scenarios such as on slopes.

[0003] In view of the shortcomings of the prior art, this application proposes a brake lever device to solve the problems existing in the prior art. Utility Model Content

[0004] The main purpose of this invention is to provide a brake lever device to solve the above-mentioned problems.

[0005] To achieve the above objectives, this utility model provides a brake lever device, comprising: A pull rod base, which is rotatably connected to the handlebars; A pull rod body, wherein the pull rod body is rotatably connected to the pull rod base; The first limiting groove is disposed at one end of the pull rod base near the pull rod body; The second limiting groove is disposed at one end of the pull rod body near the pull rod base and cooperates with the first limiting groove; An opening adjustment component is provided on the pull rod base, and the opening adjustment component is used to adjust the rotation angle of the pull rod body on the pull rod base; A limiting rod, the limiting rod including a coaxial movable end and a fixed end, the diameter of the movable end being smaller than the diameter of the fixed end, the fixed end abutting against the end of the second limiting groove away from the first limiting groove, and the movable end extending into the first limiting groove; A pull rod spring is sleeved on the movable end, and the two ends of the pull rod spring abut against the first limiting groove and the fixed end, respectively.

[0006] Furthermore, the pull rod base is provided with a rotating groove, and one end of the pull rod body is provided with a rotating part, which extends into the rotating groove and is rotatably connected to the rotating groove. The first limiting groove and the opening adjustment component are respectively located on both sides of the rotating groove.

[0007] Furthermore, the pull rod base is provided with an adjustment hole opposite to the pull rod body, and the opening adjustment component includes: An adjustment knob is provided, comprising a coaxial cap and a rotating rod. The rotating rod is fitted inside the adjustment hole and rotatably connected to the adjustment hole. The length of the rotating rod is adapted to the length of the adjustment hole. A threaded hole coaxial with the rotating rod is provided at the end of the rotating rod away from the cap. An adjustment screw is threaded into the threaded hole and abuts against the pull rod body.

[0008] Furthermore, the pull rod base is provided with a fixing hole that communicates with the adjustment hole and is perpendicular to the adjustment hole. A knob fixing screw is fitted inside the fixing hole. The rotating rod is provided with a first annular groove that is coaxial with the rotating rod. The first annular groove cooperates with the knob fixing screw to limit the adjustment knob from approaching or moving away from the pull rod body.

[0009] Furthermore, the pull rod base is provided with a positioning hole, a positioning post is fitted inside the positioning hole, a positioning bead is provided at the end of the positioning post away from the positioning hole, a positioning spring is provided between the bottom of the positioning bead and the positioning hole, and the positioning spring provides a force to the positioning post away from the positioning hole; the bottom of the rotating cap is evenly distributed with multiple positioning grooves in a ring, the positioning grooves are adapted to the positioning bead, and the multiple positioning grooves are coaxial with the rotating cap.

[0010] Furthermore, the rotating groove is provided with a first parking hole, and the rotating part is provided with a second parking hole that mates with the first parking hole; it also includes a parking assembly, which is sleeved in the first parking hole and the second parking hole, and the parking assembly is used for parking braking.

[0011] Furthermore, the parking assembly includes: A parking stud is fitted into the first parking hole and the second parking hole. The parking stud is provided with a button hole coaxial with the parking stud. Two vertical elongated holes are symmetrically arranged on the side wall of the parking bolt, and the elongated holes communicate with the button hole. A parking button, wherein the parking button is fitted inside the button hole and a pin hole is provided on the parking button; A parking pin, wherein the parking pin is fitted into the pin hole, and both ends of the parking pin are located in the elongated hole; A parking spring is sleeved on the parking button. A step is provided at the bottom of the button hole. The top of the parking spring abuts against the parking pin, and the bottom abuts against the step. It also includes a limiting device, which is installed on the handlebars. The limiting device works in conjunction with the parking button to limit the displacement of the parking button and achieve parking braking.

[0012] This utility model has the following beneficial effects: This invention allows for flexible adjustment of the rotation angle of the lever body via an opening adjustment component, adapting to different drivers' operating habits and hand sizes, thereby improving operating comfort. Attached Figure Description

[0013] Figure 1 This is a front view of a brake lever device according to the present invention; Figure 2 This is a perspective view of a brake lever device according to the present invention; Figure 3 This is an exploded view of a brake lever device according to this utility model; Figure 4 This is a cross-sectional view of a brake lever device according to the present invention; Figure 5 This is a schematic diagram of a parking assembly for a brake lever device according to the present invention; Figure 6 This is a schematic diagram of the adjustment knob of a brake lever device according to the present invention; Figure 7 This is a schematic diagram of the adjusting screw of a brake lever device according to this utility model.

[0014] In the diagram: 1-Pull rod base; 2-Pull rod body; 3-First limiting groove; 4-Second limiting groove; 5-Limiting top rod; 6-Pull rod spring; 7-Adjusting knob; 8-Turn cap; 9-Turn rod; 10-Adjusting screw; 11-Knob fixing screw; 12-Positioning post; 13-Positioning groove; 14-Parking stud; 15-Parking button; 16-Parking pin; 17-Parking spring. Detailed Implementation

[0015] To achieve the above objectives and effects, the technical means and structure adopted by this utility model are described in detail with reference to the accompanying drawings, focusing on the features and functions of the preferred embodiments of this utility model.

[0016] As attached Figures 1-7 As shown, this utility model provides a brake lever device, including a lever base 1, a lever body 2, a first limiting groove 3, a second limiting groove 4, an opening adjustment component, a limiting top rod 5, and a lever spring 6.

[0017] The pull rod base 1 is used for rotatable connection with the handlebars. The pull rod base 1 is provided with a rotating groove, and one end of the pull rod body 2 is integrally formed with a rotating part. The rotating part extends into the rotating groove and is rotatably connected through a rotating shaft, so that the pull rod body 2 can rotate relative to the pull rod base 1 around the rotating shaft, thereby realizing the adjustment of the opening degree of the pull rod body.

[0018] The first limiting groove 3 is opened at one end of the pull rod base 1 near the pull rod body 2 and is located on one side of the rotating groove; the second limiting groove 4 is opened at one end of the pull rod body 2 near the pull rod base 1, and is opposite to the first limiting groove 3 in position and shape, together forming the installation space for the limiting top rod 5 and the pull rod spring 6.

[0019] The limiting rod 5 includes a movable end and a fixed end coaxially arranged. The diameter of the movable end is smaller than the diameter of the fixed end, forming a stepped structure. The fixed end abuts against the inner wall of the end of the second limiting groove 4 away from the first limiting groove 3. The movable end extends into the first limiting groove 3, and the length of the movable end is slightly less than the depth of the first limiting groove 3, ensuring that the movable end can move within the first limiting groove 3 when the pull rod body 2 rotates. The pull rod spring 6 is sleeved on the movable end of the limiting rod 5, with one end abutting against the bottom inner wall of the first limiting groove 3 and the other end abutting against the fixed end face of the limiting rod 5.

[0020] The pull rod base 1 has an adjustment hole opposite to the pull rod body 2. The adjustment hole and the first limiting groove 3 are located on opposite sides of the rotation groove. The pull rod base 1 is equipped with an opening adjustment assembly, which includes an adjustment knob 7. The adjustment knob 7 consists of a coaxially integrally formed knob cap 8 and a knob 9. The knob 9 is fitted inside the adjustment hole and has a clearance fit with the adjustment hole. It can rotate around its own axis. The length of the knob 9 is adapted to the length of the adjustment hole to ensure that the knob 9 is stably installed in the adjustment hole.

[0021] The end of the rotating rod 9 away from the rotating cap 8 has a threaded hole coaxial with the rotating rod 9. An adjusting screw 10 is threaded into the threaded hole. The adjusting screw 10 can be a flat screw. The end of the adjusting screw 10 abuts against the side wall of the pull rod body 2.

[0022] When the adjustment knob 7 is turned, the lever 9 rotates around its axis. Since the adjustment screw 10 is threadedly connected to the lever 9, it moves axially along the lever 9. When the adjustment screw 10 moves closer to the pull rod body 2, the pull rod body 2 rotates towards the first limiting groove 3, increasing its opening. At this time, the limiting rod 5 also rotates relative to the first limiting groove 3, compressing the pull rod spring 6. The pull rod spring 6 provides a restoring force to the limiting rod 5 and the pull rod body 2. When the adjustment screw 10 moves away from the pull rod body 2, the pull rod body 2 rotates towards the opening adjustment assembly under the action of the pull rod spring and the limiting rod 5, causing the pull rod body 2 to continuously contact the adjustment screw 10, decreasing its opening. This allows for personalized adjustment of the pull rod body 2's opening to meet the needs of different drivers.

[0023] In this embodiment, to prevent the adjustment knob 7 from shifting axially, a fixing hole is provided on the pull rod base 1, which is connected to and perpendicular to the adjustment hole. A knob fixing screw 11 is fitted inside the fixing hole. A first annular groove is provided on the rotating rod 9, which is coaxial with the rotating rod 9. The first annular groove cooperates with the knob fixing screw 11. The end of the knob fixing screw 11 is embedded in the first annular groove, which can limit the adjustment knob 7 from moving closer to or away from the pull rod body 2, ensuring that the adjustment knob 7 can only rotate around its own axis, thereby improving the stability of the opening adjustment.

[0024] In this embodiment, a positioning hole is provided on the pull rod base 1, and a positioning post 12 is fitted inside the positioning hole. A positioning bead is embedded at the end of the positioning post 12 away from the positioning hole. A positioning spring is provided between the bottom of the positioning bead and the positioning hole. The positioning spring is fitted on the positioning post 12, with one end abutting against the bottom inner wall of the positioning hole and the other end abutting against the positioning bead, providing a force to the positioning post 12 and the positioning bead away from the positioning hole. Multiple positioning grooves 13 are evenly distributed in a ring at the bottom of the rotary cap 8. The positioning grooves 13 are adapted to the positioning bead, and the multiple positioning grooves 13 are coaxial with the rotary cap 8. When the adjustment knob 7 is rotated, the rotary cap 8 drives the positioning grooves 13 to rotate. Under the action of the positioning spring, the positioning bead is embedded in the positioning groove 13. Each time the positioning groove 13 is rotated by an angle, the positioning bead will make a clicking sensation, realizing gear positioning, which makes it easier for the driver to accurately control the opening adjustment range and improve the operating feel.

[0025] In another embodiment, a first parking hole is provided on the side wall of the rotating groove, and a second parking hole is provided on the rotating part to cooperate with the first parking hole. The first parking hole and the second parking hole are coaxially arranged, and the parking assembly is sleeved in the first parking hole and the second parking hole. The parking assembly can serve as the rotating shaft of the rotating groove and the rotating part, and can also be used to realize parking braking.

[0026] Specifically, the parking assembly includes a parking stud 14, a parking button 15, a parking pin 16, a parking spring 17, and a limiting device. The parking stud 14 is fitted into the first parking hole and the second parking hole with a clearance fit. The parking stud 14 has a button hole, and two vertical elongated holes are symmetrically formed on the side wall of the parking stud 14. The elongated holes communicate with the button hole, and the length direction of the elongated holes is consistent with the axial direction of the parking stud 14.

[0027] The parking button 15 is fitted inside the button hole and can move along the axis of the button hole. The parking button 15 has a horizontal pin hole that passes through both side walls of the parking button 15. The parking pin 16 is fitted inside the pin hole, with both ends of the parking pin 16 extending out of the pin hole and located in the elongated hole, and can move along the length of the elongated hole.

[0028] The parking spring 17 is sleeved on the parking button 15. A step 31 is provided at the bottom of the button hole. The top of the parking spring 17 abuts against the bottom of the parking pin 16, and the bottom abuts against the top surface of the step 31. In the natural state, the parking spring 17 is in a slightly compressed state, applying an upward elastic force to the parking pin 16, which drives the parking button 15 to remain in the initial position.

[0029] The limiting device is located on the handlebars and can be a limiting block, limiting groove, or other structure that works in conjunction with the parking button 15. When parking is required, the lever body 2 and lever base 1 are squeezed to the braking position, and the parking button 15 is pressed. The parking button 15 causes the parking pin 16 to move downward along the button hole, compressing the parking spring 17 until the bottom of the parking button 15 contacts the limiting device and is locked by the limiting device, restricting the rotation of the lever base 1, thereby achieving parking braking. When parking needs to be released, the parking button 15 is pressed again, the limiting device releases the limit on the parking button 15, and the elastic force of the parking spring 17 pushes the parking pin 16 and parking button 15 upward to reset, allowing the lever base 1 to rotate freely, and the parking brake is released.

[0030] The above description is only a preferred embodiment of the present utility model and not all embodiments. Anyone should know that structural changes made under the guidance of the present utility model are protected by the present utility model. All technical solutions that are the same as or similar to the present utility model are within the scope of protection of the present utility model.

Claims

1. A brake lever device, characterized in that, include: A pull rod base (1) is rotatably connected to the handlebars; The pull rod body (2) is rotatably connected to the pull rod base (1); The first limiting groove (3) is provided at one end of the pull rod base (1) near the pull rod body (2); The second limiting groove (4) is disposed at one end of the pull rod body (2) near the pull rod base (1) and cooperates with the first limiting groove (3); An opening adjustment component is provided on the pull rod base (1) and is used to adjust the rotation angle of the pull rod body (2) on the pull rod base (1). The limiting rod (5) includes a coaxial movable end and a fixed end. The diameter of the movable end is smaller than the diameter of the fixed end. The fixed end abuts against the end of the second limiting groove (4) away from the first limiting groove (3). The movable end extends into the first limiting groove (3). A pull rod spring (6) is sleeved on the movable end, and the two ends of the pull rod spring (6) abut against the first limiting groove (3) and the fixed end, respectively.

2. The brake lever device as described in claim 1, characterized in that, The pull rod base (1) is provided with a rotating groove, and one end of the pull rod body (2) is provided with a rotating part. The rotating part extends into the rotating groove and is rotatably connected to the rotating groove. The first limiting groove (3) and the opening adjustment component are located on both sides of the rotating groove, respectively.

3. The brake lever device as described in claim 2, characterized in that, The pull rod base (1) is provided with an adjustment hole opposite to the pull rod body (2), and the opening adjustment component includes: Adjustment knob (7) includes a coaxial cap (8) and a rod (9). The rod (9) is fitted inside the adjustment hole and rotatably connected to the adjustment hole. The length of the rod (9) is adapted to the length of the adjustment hole. The end of the rod (9) away from the cap (8) is provided with a threaded hole coaxial with the rod (9). An adjustment screw (10) is threadedly connected inside the threaded hole. The adjustment screw (10) abuts against the pull rod body (2).

4. A brake lever device as described in claim 3, characterized in that, The pull rod base (1) is provided with a fixing hole that communicates with the adjustment hole and is perpendicular to the adjustment hole. A knob fixing screw (11) is fitted inside the fixing hole. A first annular groove coaxial with the knob (9) is provided on the rotary rod (9). The first annular groove cooperates with the knob fixing screw (11) to limit the adjustment knob (7) from approaching or moving away from the pull rod body (2).

5. A brake lever device as described in claim 3, characterized in that, The pull rod base (1) is provided with a positioning hole, and a positioning post (12) is sleeved in the positioning hole. A positioning bead is provided at the end of the positioning post (12) away from the positioning hole. A positioning spring is provided between the bottom of the positioning bead and the positioning hole. The positioning spring gives the positioning post (12) a force away from the positioning hole. The bottom of the rotating cap (8) is evenly distributed with multiple positioning grooves (13). The positioning grooves (13) are adapted to the positioning bead. The multiple positioning grooves (13) are coaxial with the rotating cap (8).

6. A brake lever device as described in any one of claims 2-5, characterized in that, The rotating groove is provided with a first parking hole, and the rotating part is provided with a second parking hole that mates with the first parking hole; it also includes a parking assembly, which is sleeved in the first parking hole and the second parking hole, and the parking assembly is used for parking braking.

7. A brake lever device as described in claim 6, characterized in that, The parking assembly includes: Parking stud (14), the parking stud (14) is sleeved in the first parking hole and the second parking hole, the parking stud (14) is provided with a button hole coaxial with the parking stud (14), and two vertical elongated holes are symmetrically provided on the side wall of the parking stud (14), the elongated holes are connected to the button hole; Parking button (15), the parking button (15) is sleeved in the button hole, and the parking button (15) is provided with a pin hole; Parking pin (16), the parking pin (16) is sleeved in the pin hole, and the two ends of the parking pin (16) are located in the elongated hole; Parking spring (17), the parking spring (17) is sleeved on the parking button (15), the bottom of the button hole is provided with a step, the top of the parking spring (17) abuts against the parking pin (16), and the bottom abuts against the step; It also includes a limiting device, which is installed on the handlebars. The limiting device works in conjunction with the parking button (15) to limit the displacement of the parking button (15) and realize parking braking.

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