CN214729432U

CN214729432U - Detachable bicycle crank

Info

Publication number: CN214729432U
Application number: CN202120723155.3U
Authority: CN
Inventors: 王冬
Original assignee: Tianjin Gema Electric Technology Co ltd
Current assignee: Tianjin Gema Electric Technology Co ltd
Priority date: 2021-04-09
Filing date: 2021-04-09
Publication date: 2021-11-16
Anticipated expiration: 2031-04-09

Abstract

The utility model relates to the technical field of bicycle cranks, and discloses a detachable bicycle crank, which comprises a rotating shaft, wherein both ends of the rotating shaft are connected with positioning sleeves through positioning mechanisms, the positioning sleeves are sleeved on the rotating shaft, and handle legs are fixedly connected on the side wall outside the positioning sleeves; the positioning mechanism comprises a positioning groove, the positioning groove is formed in two ends of the rotating shaft, two through holes symmetrically arranged are formed in the groove wall of the positioning groove, the through holes penetrate through the rotating shaft, a clamping groove is formed in the position, corresponding to the through holes, of the positioning groove, a spring is fixedly connected to the bottom of the positioning groove, a moving block is fixedly connected to the other end of the spring, connecting rods are hinged to two sides of the moving block, a clamping block is hinged to one end, away from the moving block, of each connecting rod, and one end, away from the connecting rod, of each clamping block penetrates through the through holes and extends into the corresponding clamping groove. The utility model discloses make when breaking down maintain the device easily.

Description

Detachable bicycle crank

Technical Field

The utility model relates to a bicycle crank technical field especially relates to a detachable bicycle crank.

Background

Cranks are a very common part of bicycles and are used to connect to a chainring and drive the bicycle.

The existing crank is usually integrally formed, the crank leg cannot be detached, the crank leg is difficult to maintain when being damaged, and the crank is inconvenient for a user of a bicycle.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving among the prior art crank and adopting integrated into one piece usually, the shank leg can't be dismantled, is difficult to the maintenance when taking place to damage, to the user of bicycle, seems very inconvenient problem occasionally, and a detachable bicycle crank that proposes.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a detachable bicycle crank comprises a rotating shaft, wherein two ends of the rotating shaft are connected with positioning sleeves through positioning mechanisms, the positioning sleeves are sleeved on the rotating shaft, and handle legs are fixedly connected to the side walls outside the positioning sleeves;

the positioning mechanism comprises a positioning groove, the positioning groove is formed in two ends of the rotating shaft, two through holes symmetrically arranged are formed in the groove wall of the positioning groove, the through holes penetrate through the rotating shaft, a clamping groove is formed in the position, corresponding to the through holes, of the positioning groove, a spring is fixedly connected to the bottom of the positioning groove, a moving block is fixedly connected to the other end of the spring, connecting rods are hinged to two sides of the moving block, one end, away from the moving block, of each connecting rod is hinged to a clamping block, the clamping block is connected into the through holes in a sliding mode, and one end, away from the connecting rod, of each clamping block penetrates through the through holes and extends into the corresponding clamping groove.

Preferably, two limiting grooves which are symmetrically arranged are formed in the groove wall of the positioning groove, limiting blocks are connected in the limiting grooves in a sliding mode, one ends, far away from the bottom of the limiting groove, of the limiting blocks penetrate through notches of the limiting grooves and extend outwards, and the limiting blocks are fixedly connected to corresponding side walls of the moving blocks.

Preferably, one end of the moving block, which is close to the spring, is provided with a slide bar groove, a slide bar is connected in the slide bar groove in a sliding manner, and one end of the slide bar, which is far away from the bottom of the slide bar groove, sequentially penetrates through the notch of the slide bar groove and the spring and is fixedly connected to the bottom of the positioning groove.

Preferably, the apron is installed to one side of position sleeve, two magnetite of the equal fixedly connected with in the corresponding position department of apron and pivot, corresponding two the magnetite is for attracting the setting each other.

Preferably, the positions of the rotating shaft at the two ends are fixedly sleeved with positioning rings, and one side of each positioning ring is in contact with one side of the corresponding positioning ring.

Preferably, the outer surfaces of the rotating shaft, the positioning sleeve and the handle leg are plated with anticorrosive coatings.

Compared with the prior art, the utility model provides a detachable bicycle crank possesses following beneficial effect:

1. this detachable bicycle crank through setting up pivot, position sleeve, shank leg, constant head tank, draw-in groove, spring, movable block, connecting rod and fixture block for maintain the device easily when breaking down.

2. This detachable bicycle crank through setting up spacing groove and stopper, can carry out fine limiting displacement to the movable block, can prevent effectively that the movable block from breaking away from in the constant head tank.

The part that does not relate to in the device all is the same with prior art or can adopt prior art to realize, the utility model discloses make when breaking down maintain the device easily.

Drawings

Fig. 1 is a schematic front view of a detachable bicycle crank proposed by the present invention;

fig. 2 is an enlarged view of a portion a in fig. 1.

In the figure: the device comprises a rotating shaft 1, a positioning sleeve 2, a handle leg 3, a positioning groove 4, a clamping groove 5, a spring 6, a moving block 7, a connecting rod 8, a clamping block 9, a limiting groove 10, a limiting block 11, a sliding rod groove 12, a sliding rod 13, a cover plate 14, a magnet 15 and a positioning ring 16.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-2, a detachable bicycle crank comprises a rotating shaft 1, wherein two ends of the rotating shaft 1 are both connected with a positioning sleeve 2 through a positioning mechanism, the positioning sleeve 2 is sleeved on the rotating shaft 1, and a handle leg 3 is fixedly connected to the side wall outside the positioning sleeve 2;

the positioning mechanism comprises a positioning groove 4, the positioning groove 4 is arranged at two ends of a rotating shaft 1, two through holes are symmetrically arranged on the groove wall of the positioning groove 4, the through holes penetrate through the rotating shaft 1, a clamping groove 5 is arranged at the position of the positioning groove 4 corresponding to the through holes, a spring 6 is fixedly connected to the groove bottom of the positioning groove 4, a moving block 7 is fixedly connected to the other end of the spring 6, connecting rods 8 are hinged to two sides of the moving block 7, one end, away from the moving block 7, of each connecting rod 8 is hinged to a clamping block 9, the clamping block 9 is connected in the through holes in a sliding mode, one end, away from the connecting rod 8, of each clamping block 9 penetrates through the through holes and extends into the corresponding clamping groove 5, when the handle leg 3 needs to be disassembled for maintenance, a cover plate 14 is firstly opened, then the moving block 7 is pushed by using a push rod, the moving block 7 is enabled to compress the spring 6 to move, the moving block 7 drives the connecting rod 8 to move, and then the clamping block 9 is enabled to be pulled by the connecting rod 8, so that the clamping block 9 is separated from the clamping groove 5, then the positioning sleeve 2 can be taken down from the rotating shaft 1, and the handle leg 3 is further taken down, and the device is easy to maintain when a fault occurs.

Set up the spacing groove 10 that two symmetries set up on the cell wall of constant head tank 4, sliding connection has stopper 11 in the spacing groove 10, and the one end that stopper 11 kept away from the 10 tank bottoms of spacing groove passes the notch of spacing groove 10 and outwards extends, and fixed connection is on the corresponding lateral wall of movable block 7, under the effect of spacing groove 10 and stopper 11, can carry out fine limiting displacement to movable block 7, can prevent effectively that movable block 7 from breaking away from in constant head tank 4.

A sliding rod groove 12 is formed in one end, close to the spring 6, of the moving block 7, a sliding rod 13 is connected in the sliding rod groove 12 in a sliding mode, one end, far away from the bottom of the sliding rod groove 12, of the sliding rod 13 penetrates through a notch of the sliding rod groove 12 and the spring 6 in sequence and is fixedly connected to the bottom of the positioning groove 4, and under the action of the sliding rod groove 12 and the sliding rod 13, the moving block 7 is enabled to move more stably and reliably.

The apron 14 is installed to one side of position sleeve 2, and two magnetite 15 of the equal fixedly connected with in the corresponding position department of apron 14 and pivot 1, two magnetite 15 corresponding are for the inter attraction setting, in the effect of apron 14, can prevent effectively that debris such as dust from entering into in the constant head tank 4.

The position department that pivot 1 is located both ends has all fixedly cup jointed the holding ring 16, and one side of holding ring 2 and one side of holding ring 16 contact the setting, under the effect of holding ring 16, can fix a position the holding ring 2.

The outer surfaces of the rotating shaft 1, the positioning sleeve 2 and the handle leg 3 are all plated with anti-corrosion coatings, so that the anti-corrosion function is achieved.

The utility model discloses in, when needs are maintained handle leg 3 dismantlement, at first open apron 14, then use the push rod to promote movable block 7, make movable block 7 compression spring 6 remove, movable block 7 drives connecting rod 8 and removes, and then make connecting rod 8 stimulate fixture block 9, make fixture block 9 break away from in draw-in groove 5, then can take off position sleeve 2 from pivot 1, and then take off handle leg 3, make easy to maintain the device when breaking down, under spacing groove 10 and stopper 11's effect, can carry out fine limiting displacement to movable block 7, can prevent effectively that movable block 7 from breaking away from in constant head tank 4.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A detachable bicycle crank comprises a rotating shaft (1) and is characterized in that two ends of the rotating shaft (1) are connected with positioning sleeves (2) through positioning mechanisms, the rotating shaft (1) is sleeved with the positioning sleeves (2), and handle legs (3) are fixedly connected to the outer side walls of the positioning sleeves (2);

the positioning mechanism comprises a positioning groove (4), the positioning groove (4) is arranged at two ends of a rotating shaft (1), two through holes symmetrically arranged are formed in the groove wall of the positioning groove (4), the through holes penetrate through the rotating shaft (1) and are arranged, a clamping groove (5) is formed in the position, corresponding to the through holes, of the positioning groove (4), a spring (6) is fixedly connected to the bottom of the positioning groove (4), a moving block (7) is fixedly connected to the other end of the spring (6), connecting rods (8) are hinged to two sides of the moving block (7), one ends, far away from the moving block (7), of the connecting rods (8) are hinged to clamping blocks (9), the clamping blocks (9) are connected in the through holes in a sliding mode, and one ends, far away from the connecting rods (8), of the clamping blocks (9) penetrate through the through holes and extend into the corresponding clamping grooves (5).

2. The detachable bicycle crank of claim 1, wherein two symmetrically arranged limiting grooves (10) are formed on the groove wall of the positioning groove (4), a limiting block (11) is slidably connected in the limiting groove (10), and one end of the limiting block (11) far away from the groove bottom of the limiting groove (10) passes through the notch of the limiting groove (10) and extends outwards, and is fixedly connected to the corresponding side wall of the moving block (7).

3. The detachable bicycle crank of claim 1, characterized in that the end of the moving block (7) close to the spring (6) is provided with a slide bar groove (12), a slide bar (13) is slidably connected in the slide bar groove (12), and the end of the slide bar (13) far away from the bottom of the slide bar groove (12) sequentially passes through the notch of the slide bar groove (12) and the spring (6) and is fixedly connected to the bottom of the positioning groove (4).

4. The detachable bicycle crank of claim 1, wherein a cover plate (14) is installed at one side of the positioning sleeve (2), two magnets (15) are fixedly connected to corresponding positions of the cover plate (14) and the rotating shaft (1), and the two magnets (15) are arranged in a mutually attracting manner.

5. The detachable bicycle crank of claim 1, wherein the positions of the two ends of the rotating shaft (1) are fixedly sleeved with positioning rings (16), and one side of the positioning sleeve (2) is in contact with one side of the positioning ring (16).

6. The detachable bicycle crank of claim 1, wherein the outer surfaces of the rotating shaft (1), the positioning sleeve (2) and the crank leg (3) are coated with an anti-corrosion coating.