Bicycle crank with sleeve type telescopic structure

Abstract

The utility model relates to the technical field of bicycle spare and accessory parts, and discloses a bicycle crank with a sleeve type telescopic structure, which comprises a crank main rod, the back of the crank main rod is provided with a sliding chute I, one end of the crank main rod is movably sleeved with a sleeve I, the back of the sleeve I is fixedly connected with a connecting rod, and the connecting rod is fixedly connected with the sliding chute II. A first sleeve is movably arranged at one end of the crank main rod, a large sliding block is fixedly installed in the first sleeve and is in sliding connection with the first sliding groove, a second sleeve is movably arranged at the other end of the crank main rod in a sleeving mode, a large sliding block is fixedly installed in the second sleeve and is in sliding connection with the first sliding groove, and limiting holes are formed in the two sides of the crank main rod at equal intervals. Limiting assemblies are arranged on the two sides of the first sleeve and the two sides of the second sleeve correspondingly. The first sleeve and the second sleeve slide according to the needed length, after the needed length is adjusted, the limiting assembly is aligned with the limiting hole of the crank main rod, and the effects that adjustment can be conducted according to different heights of different riders, and riding is convenient are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of bicycle parts and accessories, in particular to a bicycle crank with a sleeve-type telescopic structure. Background Art

[0002] Bicycles are a traditional industry with a history of more than 100 years. Due to environmental protection and transportation issues, bicycles have once again become a favorite tool for residents of various countries and a fitness tool. The focus of the world's bicycle industry is shifting from traditional means of transportation to sports, mountain and leisure types.

[0003] The crank is an essential part of a bicycle. The required crank length varies depending on the height of the person. The assembly of the crank is rather troublesome, and the rider cannot replace it at will. Utility Model Content

[0004] The utility model aims to provide a bicycle crank with a sleeve-type telescopic structure, which can be telescoped according to the heights of different people and is convenient for riders to ride.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a bicycle crank with a sleeve-type telescopic structure, comprising a crank main rod, a slide groove 1 is provided on the back side of the crank main rod, one end of the crank main rod is movably sleeved with a sleeve 1, a large slider is fixedly installed inside the sleeve 1 and is slidably connected to the slide groove 1, the other end of the crank main rod is movably sleeved with a sleeve 2, a large slider is fixedly installed inside the sleeve 2 and is slidably connected to the slide groove 1, limiting holes are equidistantly provided on both sides of the crank main rod, and limiting components are respectively provided on both sides of the sleeve 1 and the sleeve 2.

[0006] Preferably, a connecting rod is fixedly connected to the back side of the sleeve 1.

[0007] Preferably, the front side of the sleeve 2 is movably connected with a pedal via a pin.

[0008] Preferably, a telescopic rod 1 is fixedly mounted on the top inner wall of the sleeve 1, and the other end of the telescopic rod 1 is fixedly connected to one end of the crank main rod.

[0009] Preferably, a telescopic rod 2 is fixedly mounted on the bottom inner wall of the sleeve 2, and the other end of the telescopic rod 2 is fixedly connected to the other end of the crank main rod.

[0010] Preferably, the limiting assembly includes: a connecting plate fixedly mounted on one side of the sleeve.

[0011] Preferably, a through hole is provided on the surface of the connecting plate, a slide groove 2 is provided on one side of the connecting plate, a baffle is slidably connected to the inside of the slide groove 2 via a small slider, and a telescopic rod 3 is fixedly connected to one side of the connecting plate.

[0012] Preferably, the other end of the telescopic rod three is fixedly connected to a fixing plate, one side of the fixing plate is fixedly connected to a fixing rod, and the fixing rod is engaged with the movable hole and the limiting hole.

[0013] The utility model provides a bicycle crank with a sleeve-type telescopic structure, which has the following beneficial effects:

[0014] (1) The utility model slides sleeve 1 and sleeve 2 according to the required length, and after adjusting to the required length, the limit assembly is aligned with the limit hole of the crank main rod, so that the length can be adjusted according to the height of different riders, making riding more convenient.

[0015] (2) After adjusting to the required length, the utility model aligns the limit assembly with the limit hole of the crank main rod, slides the baffle upward so that the baffle does not block the fixing rod, presses the fixing plate, drives the fixing rod to engage with the through hole and the limit hole, and achieves the effect of fixing the crank and preventing it from shaking during riding. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a rear view of the structure of the utility model;

[0018] Figure 3 This is a three-dimensional cross-sectional view of the structure of the utility model;

[0019] Figure 4 This is a three-dimensional view of the structure of the limit assembly of the utility model;

[0020] Figure 5 This is an exploded view of the limit assembly structure of the utility model.

[0021] In the figure: 1 crank main rod, 2 sleeve 1, 3 sleeve 2, 4 connecting rod, 5 pedal, 6 limit assembly, 7 telescopic rod 1, 8 telescopic rod 2;

[0022] 611 connecting plate, 612 baffle plate, 613 small sliding block, 614 telescopic rod three, 615 fixing plate, 616 fixing rod. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention. Example 1

[0025] A preferred embodiment of a bicycle crank with a sleeve-type telescopic structure provided by the utility model is as follows: Figure 1-5 As shown: a bicycle crank with a sleeve-type telescopic structure, comprising a crank main rod 1, a slide groove 1 is provided on the back of the crank main rod 1, a sleeve 2 is movably provided on one end of the crank main rod 1, a large slider is fixedly installed inside the sleeve 2 and is slidably connected to the slide groove 1, a sleeve 2 3 is movably provided on the other end of the crank main rod 1, a large slider is fixedly installed inside the sleeve 2 3 and is slidably connected to the slide groove 1, a connecting rod 4 is fixedly connected to the back of the sleeve 2, a pedal 5 is movably connected to the front of the sleeve 2 3 through a pin shaft, and a top of the sleeve 2 is movably provided inside the sleeve 2. A telescopic rod 7 is fixedly installed on the wall, and the other end of the telescopic rod 7 is fixedly connected to one end of the crank main rod 1. A telescopic rod 2 8 is fixedly installed on the bottom inner wall of the sleeve 2 3, and the other end of the telescopic rod 2 8 is fixedly connected to the other end of the crank main rod 1. Limiting holes are equidistantly provided on both sides of the crank main rod 1, and limiting components 6 are respectively provided on both sides of the sleeve 1 2 and the sleeve 2 3; when the length needs to be adjusted, the sleeve 1 2 and the sleeve 2 3 are slid according to the required length, and after adjusting to the required length, the limiting component 6 is aligned with the limiting hole of the crank main rod 1. Example 2

[0026] Based on Example 1, a preferred embodiment of a bicycle crank with a sleeve-type telescopic structure provided by the utility model is as follows: Figure 1-5As shown: the limiting component 6 includes: a connecting plate 611, which is fixedly installed on one side of the sleeve 2; a through hole is provided on the surface of the connecting plate 611, a slide groove 2 is provided on one side of the connecting plate 611, and a baffle 612 is slidably connected to the inside of the slide groove 2 through a small slider 613; a telescopic rod 3 614 is fixedly connected to one side of the connecting plate 611, and the other end of the telescopic rod 3 614 is fixedly connected to a fixing plate 615, and a fixing rod 616 is fixedly connected to one side of the fixing plate 615, and the fixing rod 616 is engaged with the movable hole and the limiting hole; after adjusting to the required length, the limiting component 6 is aligned with the limiting hole of the crank main rod 1, and the baffle is slid upward so that the baffle does not block the fixing rod, and the fixing plate 615 is pressed to drive the fixing rod 616 to engage with the through hole and the limiting hole.

[0027] When in use, when adjusting the crank length according to different height requirements, pull the fixing plate outward, the fixing plate drives the fixing rod to move outward, and the telescopic rod three extends according to the length of the fixing plate pulled outward, and plays a fixing role on the fixing plate. When the other end of the fixing rod leaves the through hole opened in the connecting plate, slide the fixing rod connected to the surface of the connecting plate downward so that the fixing rod is blocked in front of the other end of the connecting plate. Slide sleeve one and sleeve two according to the required length. After adjusting to the required length, align the limit assembly with the limit hole of the crank main rod, slide the baffle upward so that the baffle does not block the fixing rod, press the fixing plate, and drive the fixing rod to engage with the through hole and the limit hole.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A bicycle crank with a telescopic sleeve structure, comprising a crank main rod (1), characterized in that: A slide groove 1 is provided on the back of the crank main rod (1); a sleeve 1 (2) is movably provided on one end of the crank main rod (1); a large slider is fixedly installed inside the sleeve 1 (2) and is slidably connected to the slide groove 1; a sleeve 2 (3) is movably provided on the other end of the crank main rod (1); a large slider is fixedly installed inside the sleeve 2 (3) and is slidably connected to the slide groove 1; limiting holes are equidistantly provided on both sides of the crank main rod (1); and limiting components (6) are respectively provided on both sides of the sleeve 1 (2) and the sleeve 2 (3).

2. A bicycle crank with a sleeve-type telescopic structure according to claim 1, characterized in that: The back side of the sleeve 1 (2) is fixedly connected with a connecting rod (4).

3. The bicycle crank with a sleeve-type telescopic structure according to claim 1, characterized in that: The front side of the sleeve 2 (3) is movably connected to a pedal (5) via a pin.

4. The bicycle crank with a sleeve-type telescopic structure according to claim 2, characterized in that: A telescopic rod 1 (7) is fixedly mounted on the top inner wall of the sleeve 1 (2), and the other end of the telescopic rod 1 (7) is fixedly connected to one end of the crank main rod (1).

5. The bicycle crank with a sleeve-type telescopic structure according to claim 1, characterized in that: A telescopic rod 2 (8) is fixedly mounted on the inner wall of the bottom of the sleeve 2 (3), and the other end of the telescopic rod 2 (8) is fixedly connected to the other end of the crank main rod (1).

6. The bicycle crank with a sleeve-type telescopic structure according to claim 1, characterized in that: The limiting component (6) comprises: The connecting plate (611) is fixedly mounted on one side of the sleeve 1 (2).

7. The bicycle crank with a sleeve-type telescopic structure according to claim 6, characterized in that: A through hole is provided on the surface of the connecting plate (611), a second slide groove is provided on one side of the connecting plate (611), a baffle plate (612) is slidably connected to the interior of the second slide groove via a small slider (613), and a telescopic rod three (614) is fixedly connected to one side of the connecting plate (611).

8. The bicycle crank with a sleeve-type telescopic structure according to claim 7, characterized in that: The other end of the telescopic rod three (614) is fixedly connected to a fixing plate (615), one side of the fixing plate (615) is fixedly connected to a fixing rod (616), and the fixing rod (616) is snap-fitted and connected to the movable hole and the limiting hole.

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