High-load bicycle middle axle

Abstract

The utility model discloses a high-load bicycle middle axle, which relates to the technical field of bicycles and comprises an axle center mechanism, an outer sealing mechanism is sleeved on the outer side of the axle center mechanism, and side sealing mechanisms are arranged on two sides of the outer sealing mechanism in a sealing manner. According to the utility model, through the matching arrangement of the axis mechanism and the outer sealing mechanism, the thickened center shaft is arranged in the middle of the axis of the center shaft to play a limiting role, the shell rod and the thickened center shaft do not make contact with each other, the bearings are connected to the two sides of the shell rod in a sleeving mode, and the bearings achieve rotation separation and reduce rotation friction force; the bearing and the thickened middle shaft are matched to bear bending moment and torque, the multidirectional load resistance of the middle shaft is improved, the limiting effect of the thickened middle shaft prevents the transverse movement of the middle shaft caused by the position offset of the bearing, and through the matched arrangement of the anti-loose gasket and the side rotating piece, the double-side sealing effect is mainly achieved, the stability of the middle shaft structure is kept, and the multidirectional load resistance is synchronously improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a bicycle technical field, concretely is a high load bicycle middle shaft. BACKGROUND

[0002] The bicycle middle shaft is the key part of connecting the bicycle crank and the frame, bears various forces and torques generated in the riding process, and the high load bicycle middle shaft needs to have higher strength and durability.

[0003] The utility model discloses a bicycle middle shaft, including core axle, sleeve, bearing and end cover, the core axle both ends set up with the anti -rotation connecting structure of bicycle pedal crank cooperation, set up two groups ring type boss in the middle part of core axle, the sleeve is sleeved in the outside of core axle, and the annular region is formed between the sleeve and the core axle, the bearing number is two groups, is installed respectively in two ends of annular region, and the bearing inner ring is assembled with the core axle with interference fit mode, is limited to its axial through two groups of ring type boss on the core axle, the end cover sets up two groups, and the sleeve is sleeved in both ends, and the both ends of core axle are from the end cover and go out, one group of end cover is assembled with the sleeve with interference fit mode, and the other group of end cover is assembled with the sleeve with clearance fit mode, and the existing bicycle middle shaft not only bears the bending moment, but also bears the torque, needs to promote multidirectional load resistance, to reduce the friction coefficient, promotes the service life.

[0004] In view of the above problem, therefore, a high load bicycle middle shaft is provided. UTILITY MODEL CONTENTS

[0005] The utility model discloses a high load bicycle middle shaft, solve the problem that the existing bicycle middle shaft in background art not only bears the bending moment, but also bears the torque, needs to promote multidirectional load resistance, to reduce the friction coefficient, promote the service life.

[0006] To achieve the above object, the utility model provides the following technical scheme: a high load bicycle middle shaft, including the axle mechanism, the outside of axle mechanism is sleeved with the outer seal mechanism, the both sides of outer seal mechanism are sealed and are provided with side seal mechanism, the axle mechanism includes middle axle axle, thickened middle axle is fixedly arranged in the middle part of middle axle axle, the outer seal mechanism includes the shell rod of sleeveing on thickened middle axle, the both sides of shell rod are supported and are provided with bearing, the side of bearing is provided with the lock washer, the both sides of shell rod are sleeved with side rotator, and side rotator is rotatably connected with bicycle support.

[0007] Preferably, the axle mechanism further includes a side nut threadedly disposed on both sides of the middle axle shaft.

[0008] Preferably, the both sides of the shell rod are provided with a tapered hole for sleeving the bearing.

[0009] Preferably, the bearing comprises an inner cone ring arranged in the thickened middle shaft, and outer cone rings arranged on both sides of the shell rod.

[0010] Preferably, a plurality of cylindrical rollers are arranged in rotation between the inner cone ring and the outer cone ring, and the plurality of cylindrical rollers are arranged in a circular array with the inner cone ring as a common center.

[0011] Preferably, a gasket is fixed on one side of the anti-loosening washer, and the gasket is clamped on both sides of the shell rod.

[0012] Preferably, an inner groove is formed in one side of the inner cone ring.

[0013] Preferably, the side rotating part comprises a side ring, a plurality of clamping blocks are fixed in a circular array inside the side ring, and an outer thread is arranged on one side of the outer end of the side rotating part.

[0014] Compared with the prior art, the utility model has the beneficial effects as follows:

[0015] 1. The high-load bicycle middle shaft is provided with a thickened middle shaft arranged in the middle shaft center part, a bearing sleeve arranged on both sides of the shell rod, and a bearing arranged to realize rotation separation and reduce rotation friction force.

[0016] 2. The high-load bicycle middle shaft is provided with an anti-loosening washer and a side rotating part arranged to mainly play a double-sided sealing role, maintain the stability of the middle shaft structure, and simultaneously improve the multidirectional load resistance. DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the overall structure of the utility model; Figure One ;

[0019] Figure 3 It is a schematic diagram of the overall structure of the utility model; Figure One ;

[0020] Figure 4 It is a schematic diagram of the overall structure of the utility model; Figure Two ;

[0021] Figure 5The whole structure of the utility model is shown in the figure Figure Two .

[0022] In the figure: 1, shaft mechanism; 11, middle shaft center; 12, thickened middle shaft; 13, side nut; 2, outer sealing mechanism; 21, outer shell rod; 211, conical hole; 22, bearing; 221, built-in conical ring; 2211, inner groove; 222, cylindrical roller; 223, external conical ring; 23, anti-loosening washer; 231, gasket; 3, side sealing mechanism; 31, side rotating part; 311, external thread; 312, side ring; 32, clamping block. DETAILED DESCRIPTION

[0023] 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, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0024] In order to further understand the content of the utility model, the utility model will be described in detail in combination with the drawings.

[0025] In combination with Figure 1 , the utility model discloses a high-load bicycle middle shaft, which comprises a shaft mechanism 1, the outer side of the shaft mechanism 1 is sleeved with an outer sealing mechanism 2, the two sides of the outer sealing mechanism 2 are sealingly provided with side sealing mechanisms 3, the shaft mechanism 1 comprises a middle shaft center 11, the middle shaft center 11 is fixedly provided with a thickened middle shaft 12 in the middle part, the outer sealing mechanism 2 comprises an outer shell rod 21 sleeved on the thickened middle shaft 12, the two sides of the outer shell rod 21 are supportingly provided with bearings 22, one side of the bearing 22 is provided with an anti-loosening washer 23, the two sides of the outer shell rod 21 are sleeved with side rotating parts 31, and the side rotating parts 31 are rotatably connected with bicycle supports.

[0026] Specifically, the middle shaft center 11 is fixedly arranged, the thickened middle shaft 12 is arranged in the middle part of the middle shaft center 11 and plays a limiting role, the outer shell rod 21 does not contact the thickened middle shaft 12, the bearings 22 are sleeved on the two sides of the outer shell rod 21, the bearings 22 realize rotary separation and reduce rotary friction, the bearings 22 and the thickened middle shaft 12 are matched to bear bending moment and torque, the multi-directional load resistance of the middle shaft is improved, the limiting role of the thickened middle shaft 12 prevents the position of the bearing 22 from deviating and causes the middle shaft to move transversely, and the bearings 22 and the two sides of the side rotating parts 31 are matched and arranged mainly to play a double-sided sealing role and keep the stability of the middle shaft structure.

[0027] The utility model will be further described in combination with the embodiments.

[0028] Embodiment one:

[0029] In combination Figures 2-5 , the shaft center mechanism 1 further comprises a side nut 13 arranged on both sides of the middle shaft 11, and the side nut 13 is used to lock the connection of the automatic bicycle crank.

[0030] The shell rod 21 is provided with a conical hole 211 on both sides for sleeving the bearing 22, and the conical hole 211 is arranged to facilitate the built-in bearing 22 and reduce the rotating friction.

[0031] The bearing 22 comprises an inner conical ring 221 arranged in close contact with the thickened middle shaft 12, and an outer conical ring 223 arranged in close contact with both sides of the shell rod 21, the inner conical ring 221 and the outer conical ring 223 are sleeved inside and outside, and the inner conical ring 221 and the outer conical ring 223 are arranged on one side in a conical shape to prevent deviation during rotation.

[0032] A plurality of cylindrical rollers 222 are arranged between the inner conical ring 221 and the outer conical ring 223, the plurality of cylindrical rollers 222 are arranged in a circular array with the inner conical ring 221 as the common center, the cylindrical rollers 222 are arranged in a cylindrical shape, and the cylindrical rollers 222 are sleeved between the inner conical ring 221 and the outer conical ring 223 to improve the stability of rotation.

[0033] The side of the lock washer 23 is fixedly provided with a gasket 231, the gasket 231 is clamped on both sides of the shell rod 21, and the gasket 231 realizes side end closure by filling the shell rod 21.

[0034] The inner conical ring 221 is provided with an inner recess 2211 on one side, and the outer conical ring 223 is arranged in close contact with the lock washer 23 to realize sealing, the inner recess 2211 on one side of the inner conical ring 221 is arranged so that the lock washer 23 is not in close contact with the inner conical ring 221, preventing the fixation of the lock washer 23 from affecting the rotation of the inner conical ring 221.

[0035] Embodiment two:

[0036] In combination Figure 3 And Figure 4 , the side turning piece 31 comprises a side ring 312, a plurality of clamping blocks 32 are fixed in a circular array inside the side ring 312, and the outer end of one side of the side turning piece 31 is provided with an outer thread 311, the side ring 312 realizes the connection and limiting between the side turning piece 31 and the bicycle support, the outer thread 311 is connected with the inner thread of the bicycle support, and the bilateral arrangement of the clamping blocks 32 makes the middle shaft bilateral universal, improving the adaptability.

[0037] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0038] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A high load bicycle spindle comprising a spindle core mechanism (1), characterized in that: The outer side of the shaft core mechanism (1) is sleeved with an outer sealing mechanism (2), and the two sides of the outer sealing mechanism (2) are sealed and provided with side sealing mechanisms (3); The shaft core mechanism (1) comprises a middle shaft core (11), and a thickened middle shaft (12) is fixedly arranged in the middle of the middle shaft core (11); the outer sealing mechanism (2) comprises a shell rod (21) sleeved on the thickened middle shaft (12), both sides of the shell rod (21) are supported and provided with bearings (22), one side of the bearing (22) is provided with a lock washer (23), both sides of the shell rod (21) are sleeved with side rotating members (31), and the side rotating members (31) are rotationally connected with the bicycle support.

2. A high load bicycle spindle as claimed in claim 1, wherein: The shaft core mechanism (1) further comprises side nuts (13) which are threadedly arranged on both sides of the middle shaft core (11).

3. A high load bicycle spindle as defined in claim 1, wherein: Both sides of the shell rod (21) are provided with tapered holes (211) for sleeving the bearings (22).

4. A high load bicycle spindle as defined in claim 1, wherein: The bearing (22) comprises an inner tapered ring (221) arranged in close contact with the thickened middle shaft (12) and an outer tapered ring (223) arranged in close contact with both sides of the shell rod (21).

5. A high load bicycle spindle as defined in claim 4, wherein: A plurality of cylindrical rollers (222) are rotationally arranged between the inner tapered ring (221) and the outer tapered ring (223), and the plurality of cylindrical rollers (222) are arranged in a circular array with the inner tapered ring (221) sharing a common center.

6. A high load bicycle spindle as defined in claim 1, wherein: One side of the lock washer (23) is fixedly provided with a gasket (231), and the gasket (231) is clamped on both sides of the shell rod (21).

7. A high load bicycle spindle as defined in claim 4, wherein: One side of the inner tapered ring (221) is provided with an inner recess (2211).

8. A high load bicycle spindle as defined in claim 1, wherein: The side rotating member (31) comprises a side ring (312), a plurality of clamping blocks (32) are fixedly arranged in a circular array inside the side ring (312), and one side of the side rotating member (31) is provided with an outer thread (311) at the outer end.

Images