Brake handle holding distance adjusting anti-loosening structure and brake handle

Abstract

The utility model relates to a brake handle holding distance adjusting anti-loosening structure and a brake handle. The brake handle comprises a handle, the handle is provided with an extension arm with a threaded hole, and an adjusting screw used for adjusting the holding distance is screwed into the threaded hole. The external thread part of the adjusting screw is provided with a radial hole, an elastic glue stick penetrates through the radial hole, the length of the glue stick is not smaller than the outer diameter of the external thread part, and the two ends of the glue stick tightly press internal threads of the threaded hole respectively. The brake handle comprises the brake handle holding distance adjusting anti-loosening structure. According to the technical scheme, the elastic glue stick is arranged in the adjusting screw in the radial direction, and the two ends of the glue stick tightly press the threaded holes, so that the friction force between the adjusting screw and the threaded holes is increased, the adjusting screw cannot easily slide due to bumping, the loosening probability of the adjusting screw can be reduced, damping generated when the adjusting screw is rotated can be improved, and the service life of the adjusting screw is prolonged. And the hand feeling of rotating the adjusting screw is improved.

Description

Technical Field

[0001] This application relates to bicycle accessories, and more specifically to a brake lever distance adjustment and anti-loosening structure and brake lever. Background Technology

[0002] Bicycles are common modes of transportation. A brake lever is fixed to the handlebars of a bicycle, and these levers are generally divided into cable-operated brake levers and hydraulic brake levers. The brake lever consists of a handlebar and a brake lever seat. The handlebar can rotate relative to the brake lever seat. To brake, gripping the handlebar and rotating the handlebar towards the brake lever achieves braking. The distance between the handlebar and the handlebar is called the grip width. Since different users have different hand sizes, some bicycle brake levers offer adjustable grip width. Some brake levers have an adjustable grip width mechanism where an adjusting screw is inserted into the outer arm of the handlebar, with the outer end of the screw resting against the brake lever seat. Screwing the adjusting screw in or out controls the grip width. During cycling, bumps may cause the adjusting screw to loosen, changing the grip width and requiring readjustment, resulting in a poor user experience and requiring improvement. Utility Model Content

[0003] The purpose of this application is to overcome the above-mentioned shortcomings of the prior art and provide a brake lever anti-loosening structure and brake lever to reduce the probability of the adjusting screw loosening.

[0004] To achieve the above objectives, this application adopts the following technical solution: a brake lever distance adjustment and anti-loosening structure, the brake lever includes a handle, the handle is provided with an extended arm with a threaded hole, an adjusting screw for adjusting the grip distance is screwed into the threaded hole, the external threaded part of the adjusting screw is provided with a radial hole, an elastic rubber rod passes through the radial hole, the length of the rubber rod is not less than the outer diameter of the external threaded part, and the two ends of the rubber rod are respectively pressed against the internal thread of the threaded hole.

[0005] In the optional configuration, the length of the glue rod is equal to the outer diameter of the external thread portion of the adjusting screw, and both ends of the glue rod are flat.

[0006] In an optional configuration, a retaining ring is engaged with the external threaded portion of the adjusting screw. The outer diameter of the retaining ring is larger than the inner diameter of the threaded hole, which is axially upward. The head of the adjusting screw and the retaining ring are located on opposite sides of the threaded hole.

[0007] This application also provides a brake lever, which includes the above-mentioned brake lever distance adjustment and anti-loosening structure. The brake lever also includes a brake lever seat, and the handle and the brake lever seat are rotatably connected by a pin. The grip portion and the extension arm of the handle are respectively located on both sides of the pin.

[0008] In the optional solution, the brake lever seat is equipped with a hydraulic cylinder, an oil reservoir, and a clamping cylinder. The hydraulic cylinder and the oil reservoir are integrally formed. The clamping cylinder is used to clamp and fix the handlebar. Both the hydraulic cylinder and the oil reservoir are long cylindrical in shape. The central axis of the hydraulic cylinder and the central axis of the oil reservoir are parallel to the axial direction of the handlebar.

[0009] In the optional scheme, the central shaft of the hydraulic cylinder and the central shaft of the oil reservoir are located on the same mid-plane, which is the common mid-plane of the brake lever seat and the handle. The mid-plane divides the brake lever seat into two identical halves, and the mid-plane divides the handle into two identical halves.

[0010] In an optional configuration, the handle has two parallel lower arms with a nut post between them. A piston is located inside the hydraulic cylinder, and one end of the piston is connected to a screw rod that passes through the nut post to form a threaded connection.

[0011] In an optional configuration, an air bladder is installed inside the oil reservoir. A cap is fixed to the opening of the oil reservoir, and an air port is located in the middle of the cap, which connects to the inner cavity of the air bladder. The opening of the air bladder is a sealing ring, which is engaged in the annular groove of the cap and pressed tightly by the steps on the inner wall of the oil reservoir.

[0012] In the optional design, the brake lever seat has oil filling holes on both sides, both of which are connected to the oil reservoir. Each of the two oil filling holes is screwed into an oil filling cap to achieve a seal. The brake lever can be installed on both sides of the handlebar, and the two brake levers on the left and right sides of the handlebar are symmetrical to each other.

[0013] The beneficial effects of this application compared with the prior art are as follows: An elastic rubber rod is placed radially inside the adjusting screw, and the two ends of the rubber rod are pressed tightly against the threaded hole, thus increasing the friction between the adjusting screw and the threaded hole. The adjusting screw will not easily slip due to bumps, thus reducing the probability of the adjusting screw loosening. It can also improve the damping when rotating the adjusting screw and improve the feel of rotating the adjusting screw.

[0014] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application, it can be implemented according to the contents of the specification. In order to make the above and other objects, features and advantages of this application more obvious and understandable, preferred embodiments are given below and described in detail. Attached Figure Description

[0015] Figure 1 and Figure 2 This is an exploded view of the handlebars of the bicycle in this application.

[0016] Figure 3 This is a perspective view of the brake lever installed on the handlebars.

[0017] Figure 4 This is a perspective view of the other side of the brake lever in this application.

[0018] Figure 5 This is a top view of the brake lever in this application.

[0019] Figure 6 for Figure 5 Sectional view of section AA.

[0020] Figure 7 for Figure 5 BB section sectional view.

[0021] Figure 8 This is an exploded view of the handlebars of the bicycle in this application.

[0022] It should be noted that the products shown in the above views have been appropriately scaled down / enlarged to fit the drawing size and ensure clarity of the views, and there is no limitation on the size of the products shown in the views. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments.

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0026] The first embodiment of this application is a brake lever distance adjustment and anti-loosening structure, the specific structure of which is as follows: Figure 1 and Figure 2 As shown. The anti-loosening structure can be applied to hydraulic brake levers or cable brake levers.

[0027] like Figure 1 and Figure 2As shown, the brake lever includes a handle 10, which has an extension arm 11 with a threaded hole 111. An adjusting screw 20 for adjusting the grip distance is screwed into the threaded hole 111. The external thread portion 21 of the adjusting screw 20 has a radial hole 22, and an elastic rubber rod 23 passes through the radial hole 22. The rubber rod 23 can be made of an elastic material, such as nylon or rubber. The length of the rubber rod 23 is not less than the outer diameter of the external thread portion 21. Specifically, the length of the rubber rod 23 is equal to the outer diameter of the external thread portion 21 of the adjusting screw 20. Both ends of the rubber rod 23 are flat, while the external thread portion 21 of the adjusting screw 20 is cylindrical. Therefore, both ends of the rubber rod 23 will protrude beyond the external thread portion 21. In other embodiments, the length of the rubber rod can also be slightly larger than the outer diameter of the external thread portion, for example, the difference between the length of the rubber rod and the outer diameter of the external thread portion is not greater than 1 mm. When the adjusting screw 20 is screwed into the threaded hole 111, both ends of the rubber rod 23 are compressed, and both ends of the rubber rod 23 press tightly against the internal thread of the threaded hole 111. This increases the friction between the adjusting screw 20 and the threaded hole 111, so the adjusting screw 20 will not easily slip relative to the threaded hole 111 due to bumps and vibrations. Therefore, it can reduce the probability of the adjusting screw 20 loosening, and also improve the damping when rotating the adjusting screw 20, thus improving the feel of rotating the adjusting screw 20.

[0028] In some embodiments, such as Figure 1 and Figure 2 As shown, a retaining ring 24 is engaged with the external thread portion 21 of the adjusting screw 20, and the retaining ring 24 is disposed in a groove 211 of the external thread portion 21. The outer diameter of the retaining ring 24 is larger than the inner diameter of the threaded hole 111. In the axial direction Z of the threaded hole 111, the head of the adjusting screw 20 and the retaining ring 24 are located on both sides of the threaded hole 111, so the retaining ring 24 can prevent the adjusting screw 20 from disengaging from the threaded hole 111.

[0029] The second embodiment is a brake lever, which includes the brake lever distance adjustment and anti-loosening structure of the above embodiments. The specific structure of the brake lever is as follows: Figure 3-8 As shown. The brake lever of this embodiment can be applied to bicycles, scooters, or motorcycles.

[0030] Combination Figure 3 and Figure 4 As shown, the brake lever also includes a brake lever seat 30. The handle 10 and the brake lever seat 30 can be made of metal, such as aluminum alloy. The handle 10 and the brake lever seat 30 are rotatably connected by a pin 13. The grip portion 12 and the extension arm 11 of the handle 10 are respectively located on both sides of the pin 13. The end of the adjusting screw 20 abuts against the bottom surface of the U-shaped groove 39 of the brake lever seat 30. Therefore, when the adjusting screw 20 is screwed in clockwise, it will drive the handle 10 to rotate around the pin 13, and the grip portion 12 of the handle 10 will gradually approach the handlebar 90, at which point the grip distance will decrease; while when the adjusting screw 20 is screwed out counterclockwise, the grip distance will increase.

[0031] In some embodiments, combined with Figure 3 and Figure 4 As shown, the brake lever holder 30 is equipped with a hydraulic cylinder 31, an oil reservoir 32, and a clamping cylinder 33. The hydraulic cylinder 31 and the oil reservoir 32 are integrally formed. Both the hydraulic cylinder 31 and the oil reservoir 32 are elongated cylindrical in shape, with the oil reservoir 32 connected to the hydraulic cylinder 31. The clamping cylinder 33 is used to clamp and fix the handlebar 90. The central shaft X1 of the hydraulic cylinder 31 and the central shaft X2 of the oil reservoir 32 are both parallel to the axial direction X3 of the handlebar. The central shaft X1 of the hydraulic cylinder 31 and the central shaft X2 of the oil reservoir 32 are located on the same intermediate surface P1. Figure 3 , Figure 4 and Figure 6 As shown, the middle surface P1 is the common middle surface of the brake lever seat 30 and the handle 10. The middle surface P1 divides the brake lever seat 30 into two identical halves, and the middle surface P1 also divides the handle 10 into two identical halves. That is, the front and rear surfaces of the brake lever seat 30 and the handle 10 are identical in design. Figure 3 and Figure 4 As shown, this design allows for left- or right-handed brake lever configurations, which helps reduce production costs. Combined with... Figure 3 and Figure 4 As shown, the brake lever seat 30 has oil filling holes 321 on both its front and back sides. Both oil filling holes 321 are connected to the oil reservoir 32, and each oil filling hole 321 is screwed into an oil hole cap 322 to achieve a seal. Therefore, the brake lever structure can be installed on either the left or right side of the handlebar, with an oil filling hole 321 on the front in both cases. The brake lever can be installed on both sides of the handlebar, and the brake levers on the left and right sides of the handlebar are symmetrical to each other, improving ease of use.

[0032] In some embodiments, combined with Figure 7 and Figure 8 As shown, the handle 10 has two parallel lower arms 15, with a nut post 14 between the lower arms 15. The nut post 14 can rotate around its own axis. A piston 42 is located inside the hydraulic cylinder 31. One end of the piston 42 is connected to a screw 41, which passes through the nut post 14 and forms a threaded connection. One end of the screw 41 is a ball head 411, and one end of the piston 42 has a corresponding spherical groove 421. The ball head 411 is placed within the spherical groove 421 to form a universal joint. The other end of the piston 42 is supported by a return spring 43. When the handle 10 and the handlebars are gripped, the handle 10 pushes the screw 41 through the lower arms 15 and the nut post 14, and the screw 41 drives the piston 42 to translate within the hydraulic cylinder 31.

[0033] In some embodiments, combined with Figure 7 and Figure 8As shown, an air bladder 51 is provided inside the reservoir cylinder 32. The function of the air bladder 51 is the same as that of the breather air bladder in the reservoir cylinder of a conventional hydraulic brake lever. A cover 52 is fixed to the opening of the reservoir cylinder 32 by a threaded connection. An air port 521 is provided in the middle of the cover 52, which communicates with the inner cavity 511 of the air bladder 51. The opening of the air bladder 51 is a sealing ring 512, which is engaged in the annular groove 522 of the cover 52. The sealing ring 512 is pressed tightly by the step 329 on the inner wall of the reservoir cylinder 32, thus preventing communication between the inner cavity of the reservoir cylinder 32 and the air port 521.

[0034] In addition, such as Figure 7 As shown, the brake lever seat 30 is provided with a vertical process hole 37, which is connected to the oil reservoir 32 and the hydraulic cylinder 31 respectively. The process hole 37 is located on the other side opposite to the opening of the oil reservoir 32, and the lower opening of the process hole 37 is screwed into the sealing screw 38.

[0035] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application 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 application.

[0036] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "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 this application. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring 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. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0037] The above examples are merely illustrative of the technical content of this application to facilitate reader understanding, but do not imply that the implementation methods of this application are limited to these. Any technical extensions or re-creations made based on this application are protected by this application. The scope of protection of this application is determined by the claims.

Claims

1. A kind of brake handle distance adjustment anti-loose structure, brake handle includes handle, the handle is equipped with the outer extension arm of threaded hole, the threaded hole is screwed into the adjusting screw for adjusting the distance of grip, it is characterized by, The outer threaded part of the adjusting screw is provided with a radial hole, and an elastic rubber rod is penetrated through the radial hole, the length of the rubber rod is not less than the outer diameter of the outer threaded part, and the two ends of the rubber rod are tightly pressed against the internal threads of the threaded hole.

2. The handlebar grip distance adjustment anti-looseness structure according to claim 1, characterized in that, The length of the rubber rod is equal to the outer diameter of the outer threaded part of the adjusting screw, and the two ends of the rubber rod are both flat surfaces.

3. The handlebar grip distance adjustment anti-looseness structure according to claim 1, wherein The outer threaded part of the adjusting screw is clamped with a check ring, the outer diameter of the check ring is greater than the inner diameter of the threaded hole, and the head of the adjusting screw and the check ring are respectively located on the two sides of the threaded hole in the axial direction.

4. A brake lever, characterized in that The brake handle further comprises a brake handle seat, the handle and the brake handle seat are rotationally connected through a pin shaft, and the gripping part and the outer extension arm of the handle are respectively arranged on the two sides of the pin shaft.

5. The brake handle of claim 4, wherein, The brake handle seat is provided with a hydraulic cylinder and an oil storage cylinder, and the hydraulic cylinder and the oil storage cylinder are integrally formed; the brake handle seat is further provided with a clamping cylinder for clamping and fixedly connecting a handlebar, and the hydraulic cylinder and the oil storage cylinder are both in the shape of a long cylinder, and the central axis of the hydraulic cylinder and the central axis of the oil storage cylinder are parallel to the axial direction of the handlebar.

6. The brake handle according to claim 5, wherein The central axis of the hydraulic cylinder and the central axis of the oil storage cylinder are located on the same intermediate surface, the intermediate surface is a common intermediate surface of the brake handle seat and the handle, the intermediate surface divides the brake handle seat into two completely identical halves, and the intermediate surface divides the handle into two completely identical halves.

7. The brake handle of claim 5, wherein, The handle is provided with two parallel lower arms, a nut column is arranged between the lower arms, a piston is arranged in the hydraulic cylinder, one end of the piston is connected with a screw rod, the screw rod penetrates through the nut column and is in threaded connection.

8. The brake handle of claim 5, wherein, An air bag is arranged in the oil storage cylinder, a cover is fixed at the opening of the oil storage cylinder, an air port is arranged in the middle of the cover, and the air port is in communication with the inner cavity of the air bag.

9. The handlebar of claim 8, wherein, The opening of the air bag is a sealing ring, the sealing ring is clamped in a ring groove of the cover, and the sealing ring is tightly pressed by a step of the inner wall of the oil storage cylinder.

10. The brake handle of claim 5, wherein, The brake handle seat is provided with oil injection holes on the front and back surfaces, the two oil injection holes are in communication with the oil storage cylinder, and the two oil injection holes are respectively screwed with oil hole covers to realize sealing; the brake handle is arranged on the left and right handlebars and is symmetrical with respect to the left and right handlebars.

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