Motorcycle head tube

Abstract

The utility model discloses a motorcycle head tube, which belongs to the technical field of motorcycles, and comprises a head tube body, the upper end and the lower end of the head tube body are rotatably connected with two groups of arc-shaped hoops, the two groups of arc-shaped hoops correspond to each other, each group of arc-shaped hoops comprises two arc-shaped hoops, and the inner surface of each arc-shaped hoop is fixedly connected with a limiting clamping strip. A connecting rod is fixedly connected between the two arc-shaped hoops in each set, the two connecting rods are located on the outer side of the bicycle head pipe body, rotating sleeves are rotationally connected to the two connecting rods, clamping fingers are fixedly connected to the circumferential surfaces of the two rotating sleeves and are arranged in a staggered mode, and limiting blocks are fixedly connected to the circumferential surface of the bicycle head pipe body; the two clamping fingers are matched with the limiting block; according to the utility model, the threaded structure between the threaded pipe and the locking nut can be always kept in a required locking state and is not easy to loosen, so that the service life of the steering system of the motorcycle is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of motorcycle, more particularly to a motorcycle head pipe. BACKGROUND

[0002] The motorcycle head pipe usually refers to an important component located at the head part of the motorcycle, is located at the most front end of the frame, is the key component of the motorcycle steering system, supports the handlebar and makes the vehicle flexible steering.

[0003] At present, the rotating shaft of the motorcycle steering system is rotatably installed in the head pipe, and the motorcycle realizes the steering of the front wheel by rotating in the head pipe through the rotating shaft, but most of the existing head pipes need to lock the rotating shaft through the limiting workpiece of the threaded structure at both ends of the head pipe when assembling with the rotating shaft, axially limit the rotating shaft, prevent the rotating shaft from shaking up and down, since the rotating shaft is vertically installed in the head pipe, the axial stress is large, and the limiting workpiece of the threaded structure at both ends of the head pipe is prone to looseness under long-term use, thereby affecting the normal use of the motorcycle steering system. SUMMARY

[0004] 1. Technical problem to be solved

[0005] In view of the problems in the prior art, the utility model aims at providing a motorcycle head pipe, which aims at solving the problems that most of the head pipes in the prior art need to lock the rotating shaft through the limiting workpiece of the threaded structure at both ends of the head pipe when assembling with the rotating shaft, axially limit the rotating shaft, prevent the rotating shaft from shaking up and down, since the rotating shaft is vertically installed in the head pipe, the axial stress is large, and the limiting workpiece of the threaded structure at both ends of the head pipe is prone to looseness under long-term use, thereby affecting the normal use of the motorcycle steering system.

[0006] 2. Technical scheme

[0007] In order to solve the above problems, the utility model adopts the following technical scheme:

[0008] A motorcycle head tube, comprising a head tube body, two sets of arc-shaped clamps are rotatably connected to the upper and lower ends of the head tube body, and the arc-shaped clamps of the two sets correspond to each other, each set of the arc-shaped clamps is provided with two, the inner surfaces of each of the arc-shaped clamps are fixedly connected with a limiting clamping strip, connecting rods are fixedly connected between the two arc-shaped clamps of each set, and the two connecting rods are located on the outer side of the head tube body, rotating sleeves are rotatably connected to the two connecting rods, clamping fingers are fixedly connected to the circumferential surfaces of the two rotating sleeves, and the two clamping fingers are arranged in a staggered manner, a limiting block is fixedly connected to the circumferential surface of the head tube body, and the two clamping fingers are matched with the limiting block, one end of the limiting block away from the head tube body is fixedly connected with a threaded pipe, the circumferential surface of the threaded pipe is threadedly connected with a locking nut, and the locking nut corresponds to the two clamping fingers.

[0009] As a preferred scheme of the utility model, one end of the threaded pipe is provided with a threaded oil injection hole, and the threaded oil injection hole penetrates through the limiting block and communicates with the head tube body, a limiting bolt is threadedly connected in the threaded oil injection hole, and the limiting bolt corresponds to the locking nut.

[0010] As a preferred scheme of the utility model, the circumferential surface of the threaded pipe is provided with a gasket, and the gasket corresponds to the limiting bolt on the side of the locking nut away from the limiting block.

[0011] As a preferred scheme of the utility model, the circumferential surfaces of the two connecting rods are provided with rotating grooves, and the two rotating sleeves are rotatably connected in the two rotating grooves respectively.

[0012] As a preferred scheme of the utility model, the circumferential surface of the head tube body is fixedly connected with a connecting plate, and a plurality of reinforcing plates are fixedly connected between the connecting plate and the head tube body.

[0013] 3. Beneficial effects

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] (1) In the scheme, the two sets of arc-shaped clamps are clamped by four limiting clamps to limit the rotating shaft in the car head pipe body, two clamping fingers are clamped on the limiting block, the locking nut and the threaded pipe cooperate to limit the two clamping fingers, so that the two sets of arc-shaped clamps are fixed to limit the rotating shaft, the car head pipe adopts two sets of arc-shaped clamps and four limiting clamps to limit the axial direction of the motorcycle rotating shaft, the threaded pipe and the locking nut arranged in the front radial direction make the two sets of arc-shaped clamps fixed, so that the axial force of the rotating shaft mainly acts on the two sets of arc-shaped clamps and the four limiting clamps, and the two connecting rods act on the limiting block through the two clamping fingers, so that the threaded pipe and the locking nut are less disturbed by external force, the threaded structure between the threaded pipe and the locking nut can always be kept in the required locking state, and loosening is not easy to occur, and the service life of the motorcycle steering system is guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a front view of the utility model;

[0017] Figure 2 It is a perspective view of the utility model;

[0018] Figure 3 It is a sectional view of the utility model;

[0019] Figure 4 It is an explosion diagram of the utility model.

[0020] Explanation of reference numerals in the drawing:

[0021] 1, car head pipe body; 2, arc-shaped clamp; 3, limiting clamp; 4, connecting rod; 5, rotating sleeve; 6, clamping finger; 7, limiting block; 8, threaded pipe; 9, locking nut; 10, threaded oil injection hole; 11, limiting bolt; 12, gasket; 13, rotating groove; 14, connecting plate; 15, reinforcing plate. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0023] In the description of the utility model, it is necessary to explain that the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the utility model, it should be pointed out that, unless otherwise specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be broadly understood, for example, "connected", which can be fixedly connected, can also be detachably connected, or integrally connected; can be mechanically connected, can also be electrically connected; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication between two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0025] Embodiment:

[0026] Please refer to Figures 1-4 A motorcycle head pipe, including head pipe body 1, two groups of arc clamps 2 are rotatably connected to the upper and lower ends of the head pipe body 1, and the two groups of arc clamps 2 correspond to each other, each group of arc clamps 2 is provided with two, the inner surface of each arc clamp 2 is fixedly connected with a limiting clamping strip 3, two connecting rods 4 are fixedly connected between each group of two arc clamps 2, and the two connecting rods 4 are located on the outer side of the head pipe body 1, two rotating sleeves 5 are rotatably connected on the two connecting rods 4, the circumferential surface of the two rotating sleeves 5 is fixedly connected with a clamping finger 6, and the two clamping fingers 6 are arranged in a staggered manner, the circumferential surface of the head pipe body 1 is fixedly connected with a limiting block 7, and the two clamping fingers 6 are matched with the limiting block 7, a threaded pipe 8 is fixedly connected to the end of the limiting block 7 away from the head pipe body 1, the circumferential surface of the threaded pipe 8 is threadedly connected with a locking nut 9, and the locking nut 9 corresponds to the two clamping fingers 6.

[0027] In this embodiment, the head pipe body 1 is fixed to the front end of the frame by welding, the rotating shaft of the motorcycle steering system is inserted into the head pipe body 1, the two sets of arc-shaped clamps 2 are rotated to the central shaft of the head pipe body 1 by pulling the two connecting rods 4, the two sets of arc-shaped clamps 2 are close to the upper and lower ends of the head pipe body 1, the rotating shaft is clamped and axially limited by the internal limiting clamping strip 3, then the two clamping fingers 6 connected by the two rotating sleeves 5 on the two connecting rods 4 are rotated to the limiting block 7, the two clamping fingers 6 are cross-coupled on the limiting block 7, thereby limiting the rotation of the two sets of arc-shaped clamps 2, finally the locking nut 9 is screwed on the threaded pipe 8, the locking nut 9 limits the two clamping fingers 6 on the limiting block 7, so that the two clamping fingers 6 and the limiting block 7 are stably connected, and the assembly of the steering shaft in the head pipe body 1 is completed.

[0028] Specifically, the threaded pipe 8 is provided with a threaded oil injection hole 10 at one end, and the threaded oil injection hole 10 penetrates the limiting block 7 and the head pipe body 1, and the limiting block 7 is threaded and connected with the limiting bolt 11 in the threaded oil injection hole 10, and the limiting bolt 11 corresponds to the locking nut 9.

[0029] In this embodiment, the threaded oil injection hole 10 can inject oil into the head pipe body 1, lubricate the steering shaft in the head pipe body 1, and ensure smooth use of the motorcycle steering system, the limiting bolt 11 is used to close the threaded oil injection hole 10 to prevent impurities from entering the head pipe body 1, and after the limiting bolt 11 is screwed into the threaded oil injection hole 10, the locking nut 9 can be limited to improve the limiting effect of the locking nut 9 on the two clamping fingers 6.

[0030] Specifically, the circumferential surface of the threaded pipe 8 is provided with a gasket 12, and the gasket 12 corresponds to the limiting bolt 11 on the side away from the limiting block 7 of the locking nut 9.

[0031] In this embodiment, the gasket 12 is arranged between the head of the limiting bolt 11 and the locking nut 9, has an anti-loosening effect, and makes the limiting bolt 11 and the locking nut 9 more stable.

[0032] Specifically, the circumferential surface of the threaded pipe 8 is provided with a gasket 12, and the gasket 12 corresponds to the limiting bolt 11 on the side away from the limiting block 7 of the locking nut 9.

[0033] In this embodiment, the gasket 12 is arranged between the head of the limiting bolt 11 and the locking nut 9, has an anti-loosening effect, and makes the limiting bolt 11 and the locking nut 9 more stable.

[0034] Specifically, the circumferential surface of the threaded pipe 8 is provided with a gasket 12, and the gasket 12 corresponds to the limiting bolt 11 on the side away from the limiting block 7 of the locking nut 9.

[0035] In the embodiment, the head pipe body 1 is connected to the front end of the motorcycle frame through the connecting plate 14, the connecting plate 14 is fixed to the frame by welding, and the plurality of reinforcing plates 15 improve the connection strength between the frame and the head pipe body 1.

[0036] Working principle: the rotating shaft of the motorcycle steering system is inserted into the head pipe body 1, two groups of arc-shaped clamps 2 are rotated to the center axis of the head pipe body 1 by pulling two connecting rods 4, two groups of arc-shaped clamps 2 are close to each other at the upper and lower ends of the head pipe body 1, a plurality of limiting clamping strips 3 inside are clamped to the rotating shaft, the rotating shaft is axially limited in the head pipe body 1, then two clamping fingers 6 are clamped to the limiting block 7 by rotating, finally, the locking nut 9 is screwed on the threaded pipe 8, so that the two clamping fingers 6 are limited on the limiting block 7, and after the two clamping fingers 6 are limited, the two groups of arc-shaped clamps 2 cannot rotate, so that the rotating shaft is stably connected in the head pipe body 1.

[0037] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and improvement concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A motorcycle head tube, comprising a head tube body (1), characterized in that: The upper and lower ends of the head tube body (1) are rotatably connected to two sets of arc-shaped clamps (2), and the two sets of arc-shaped clamps (2) correspond to each other. Each set of arc-shaped clamps (2) consists of two clamps. The inner surface of each arc-shaped clamp (2) is fixedly connected to a limit strip (3). A connecting rod (4) is fixedly connected between each set of two arc-shaped clamps (2), and the two connecting rods (4) are located on the outside of the head tube body (1). A rotating sleeve (5) is rotatably connected to each of the two connecting rods (4). Both of the two rotating sleeves (5) are fixedly connected with locking fingers (6), and the two locking fingers (6) are staggered. The circumferential surface of the head tube body (1) is fixedly connected with a limiting block (7), and the two locking fingers (6) match the limiting block (7). The end of the limiting block (7) away from the head tube body (1) is fixedly connected with a threaded tube (8). The circumferential surface of the threaded tube (8) is threadedly connected with a locking nut (9), and the locking nut (9) corresponds to the two locking fingers (6).

2. The motorcycle nose tube according to claim 1, characterized in that: One end of the threaded pipe (8) is provided with a threaded oil injection hole (10), and the threaded oil injection hole (10) passes through the limiting block (7) and communicates with the head tube body (1). The threaded oil injection hole (10) is internally threaded with a limiting bolt (11), and the limiting bolt (11) corresponds to the locking nut (9).

3. A motorcycle nose cone according to claim 2, characterized in that: The circumferential surface of the threaded tube (8) is provided with a gasket (12), and the gasket (12) is located on the side of the locking nut (9) away from the limiting block (7) and corresponds to the limiting bolt (11).

4. A motorcycle nose tube according to claim 3, characterized in that: The two connecting rods (4) are provided with rotating grooves (13) on their circumferential surfaces, and the two rotating sleeves (5) are respectively rotatably connected in the two rotating grooves (13).

5. A motorcycle nose cone according to claim 4, characterized in that: A connecting plate (14) is fixedly connected to the circumferential surface of the head tube body (1), and multiple reinforcing plates (15) are fixedly connected between the connecting plate (14) and the head tube body (1).

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