CN217020222U

CN217020222U - Riveting device for crank group

Info

Publication number: CN217020222U
Application number: CN202122699908.4U
Authority: CN
Inventors: 何光荣; 许开明
Original assignee: Yangzhou Chuangmeng Bicycle Fitting Co ltd
Current assignee: Yangzhou Chuangmeng Bicycle Fitting Co ltd
Priority date: 2021-11-05
Filing date: 2021-11-05
Publication date: 2022-07-22
Anticipated expiration: 2031-11-05

Abstract

The utility model relates to a crank set riveting device. The connecting shaft is internally provided with a first clamping shaft and a second clamping shaft, one ends of the first clamping shaft and the second clamping shaft, which extend to the outer side of the connecting shaft, are fixedly provided with connecting blocks, through holes are formed in the connecting blocks, threaded holes are formed in positions, corresponding to the through holes, of the connecting shaft, screws are inserted into the through holes, the threaded holes are in threaded connection, a flywheel is fixedly arranged on the first clamping shaft, one ends, which are deviated from each other, of the first clamping shaft and the second clamping shaft are respectively and fixedly provided with a first crank and a second crank, when the arrangement needs to be disassembled and maintained, the screws are taken out of the threaded holes through rotating the screws, at the moment, one of the first clamping shaft and the second clamping shaft can be taken out independently for maintenance or replacement, compared with the prior art, after the whole unilateral crankshaft needs to be taken down, the connecting shaft is taken out, and then the whole replacement is carried out, the scheme is more convenient.

Description

Riveting device for crank group

Technical Field

The utility model relates to the field of bicycles, in particular to a crank set riveting device.

Background

Riveting is a mechanical term, and is to use a rivet to connect two or more workpieces, such as holes for putting through shoelaces of sneakers, or to rivet the workpieces by using a hollow rivet.

Cranks are one of the drive components in bicycles, and loose cranks often make a click while checking the crank. When the crank problem is checked, the crank is firstly rotated to the horizontal position, meanwhile, the cranks on the two sides are pressed downwards by force, then the crank is rotated for 180 degrees, and the same action is repeated. If the crank will shake, the crank fixing bolt should be fastened. The cranks of new bicycles are subjected to such checks frequently.

When the existing maintenance crank is replaced, the whole unilateral crank shaft needs to be taken down, then the connecting shaft is drawn out, and then the whole replacement is carried out on the connecting shaft, so that the maintenance crank is troublesome, and the crank set riveting device is provided for this reason.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a riveting device for a crank set, which solves the problems.

In order to achieve the above purpose, the utility model provides the following technical scheme: the riveting device for the crank set comprises a connecting shaft, wherein a clamping shaft I and a clamping shaft II are arranged in the connecting shaft, connecting blocks are fixedly arranged at one ends of the clamping shaft I and the clamping shaft II, which extend to the outer side of the connecting shaft, respectively, through holes are formed in the connecting blocks, threaded holes are formed in positions, corresponding to the through holes, of the connecting shaft, screws are inserted into the through holes, the threaded holes of the screws are connected together in a threaded manner, a flywheel is fixedly arranged on the clamping shaft I, and cranks I and cranks II are fixedly arranged at one ends, deviating from each other, of the clamping shaft I and the clamping shaft II respectively, when the riveting device needs to be disassembled and maintained, the screws are taken out from the threaded holes by rotating the screws, at the moment, one of the clamping shaft I and the clamping shaft II can be taken out independently for maintenance or replacement, compared with the existing riveting device, after a whole unilateral crankshaft needs to be taken down, then take the connecting axle out, then carry out whole change to it, this scheme is more convenient.

Preferably, a through-type plug hole is formed in the connecting shaft, and the first clamping shaft and the second clamping shaft are plugged into the plug hole.

Preferably, two corresponding clamping grooves are formed in the inner wall of the inserting hole, clamping blocks are integrally formed at positions, corresponding to the clamping grooves, of the first clamping shaft and the second clamping shaft, the clamping blocks are matched with the clamping blocks, the clamping blocks are clamped with the clamping grooves, and the clamping grooves and the clamping blocks are designed, so that the first clamping shaft and the second clamping shaft can be directly inserted when being installed, and the inserting is convenient.

Preferably, the second clamping shaft is integrally formed with an installation shaft, a round hole is formed in a position, corresponding to the installation shaft, of the first clamping shaft, and the round hole and the installation shaft are connected in an inserting mode.

Preferably, the equidistance has seted up multiunit inside groove on the inner wall of round hole, integrated into one piece has the arch on the position that the installation axle corresponds inside groove, protruding and inside groove looks adaptation, protruding and the movable joint in inside groove are in the same place, and this scheme is through having set up protruding and inside groove for joint axle one and joint axle two can carry out the rotation of synchronous harmony.

Compared with the prior art, the utility model provides the riveting device for the crank set, which has the following advantages:

1. this crank group riveting set through rotatory screw, takes out the screw from the screw hole, can take out one of them alone of joint axle one and joint axle two this moment and maintain or change, and the contrast is current, after need taking off whole unilateral bent axle, then take out the connecting axle, then carry out whole change to it, and this scheme is more convenient.

2. This crank set riveting set, fixture block and fixture block looks adaptation, fixture block and draw-in groove joint are in the same place, and this scheme is through having designed draw-in groove and fixture block for when installation joint axle one and joint axle two, disect insertion can, it is comparatively convenient.

3. This crank group riveting set, protruding and inside groove looks adaptation, protruding and inside groove activity joint are in the same place, and this scheme is through having set up protruding and inside groove for joint shaft one can carry out the rotation of synchronous harmony with joint shaft two.

Drawings

FIG. 1 is a schematic cross-sectional view of the structure of the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

FIG. 3 is a cross-sectional schematic view of the connecting shaft and the clamping shaft;

FIG. 4 is a schematic cross-sectional view of the connecting shaft and the second clamping shaft;

FIG. 5 is a schematic connection diagram of the first clamping shaft and the second clamping shaft.

In the figure: 1. a connecting shaft; 2. clamping the first shaft; 3. a second clamping shaft; 4. a first crank; 5. a crank II; 6. a flywheel; 7. a protrusion; 8. connecting blocks; 9. a through hole; 10. a screw; 11. inserting holes; 12. a card slot; 13. a clamping block; 14. a circular hole; 15. an inner groove; 16. and installing the shaft.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

Referring to fig. 1-5, the crank set riveting device comprises a connecting shaft 1, a first clamping shaft 2 and a second clamping shaft 3 are arranged inside the connecting shaft 1, a connecting block 8 is fixedly mounted at one end of each of the first clamping shaft 2 and the second clamping shaft 3, which extends to the outer side of the connecting shaft 1, a through-type through hole 9 is formed in the connecting block 8, a threaded hole is formed in the connecting shaft 1, which corresponds to the through hole 9, a screw 10 is inserted into the through hole 9, the threaded hole of the screw 10 is in threaded connection, a flywheel 6 is fixedly mounted on the first clamping shaft 2, a crank first 4 and a crank second 5 are fixedly mounted at one end of the first clamping shaft 2, which is far away from the second clamping shaft 3, respectively, and in such a configuration, when the screw 10 is rotated to take out the screw 10 from the threaded hole, one of the first clamping shaft 2 and the second clamping shaft 3 can be taken out separately for maintenance or replacement, the contrast is current, need take off whole unilateral bent axle after, then take the connecting axle out, then carry out whole change to it, and this scheme is more convenient.

Furthermore, a through-type plug hole 11 is formed in the connecting shaft 1, and the first clamping shaft 2, the second clamping shaft 3 and the plug hole 11 are plugged together.

Furthermore, two corresponding clamping grooves 12 are formed in the inner wall of the inserting hole 11, clamping blocks 13 are integrally formed in the positions, corresponding to the clamping grooves 12, of the first clamping shaft 2 and the second clamping shaft 3, the clamping blocks 13 are matched with the clamping blocks 13, the clamping blocks 13 are clamped with the clamping grooves 12, the clamping grooves 12 and the clamping blocks 13 are designed, and therefore the clamping holes can be directly inserted when the first clamping shaft 2 and the second clamping shaft 3 are installed, and the clamping holes are convenient and fast to use.

Furthermore, an installation shaft 16 is integrally formed on the second clamping shaft 3, a circular hole 14 is formed in a position of the first clamping shaft 2 corresponding to the installation shaft 16, and the circular hole 14 is inserted into the installation shaft 16.

Further, multiunit inner tank 15 has been seted up to the equidistance on the inner wall of round hole 14, and integrated into one piece has arch 7 on the position that installation axle 16 corresponds inner tank 15, and arch 7 and inner tank 15 looks adaptation, protruding 7 and inner tank 15 activity joint are in the same place, and this scheme is through having set up arch 7 and inner tank 15 for joint axle one 2 and joint axle two 3 can carry out the rotation of synchronous harmony.

The working principle is as follows: through rotatory screw 10, take out screw 10 from the screw hole, can take out one of them alone with joint axle one 2 and two 3 of joint axles and maintain or change this moment, the contrast is current, after need taking off whole unilateral bent axle, then take out the connecting axle, then carry out whole change to it, this scheme is more convenient.

Fixture block 13 and fixture block 13 looks adaptation, fixture block 13 and draw-in groove 12 joint are in the same place, and this scheme is through having designed draw-in groove 12 and fixture block 13 for when installation joint axle one 2 and joint axle two 3, the disect insertion can, it is comparatively convenient.

Protruding 7 and inside groove 15 looks adaptation, protruding 7 and inside groove 15 activity joint are in the same place, and this scheme is through having set up protruding 7 and inside groove 15 for the rotation of synchronous harmony can be carried out to joint axle one 2 and joint axle two 3.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Crank group riveting set, including connecting axle (1), its characterized in that: the inside of connecting axle (1) is provided with joint axle one (2) and joint axle two (3), the equal fixed mounting in one end in connecting axle (1) outside has connecting block (8) in joint axle one (2) and joint axle two (3), set up through-type through-hole (9) on connecting block (8), and set up threaded hole on connecting axle (1) the position that corresponds through-hole (9), the inside grafting of through-hole (9) has screw (10), screw (10) screw hole threaded connection is in the same place, fixed mounting has flywheel (6) on joint axle one (2), the one end that joint axle one (2) and joint axle two (3) deviate from each other is fixed mounting respectively crank one (4) and crank two (5).

2. The crankset riveting device according to claim 1, characterized in that: the connecting shaft (1) is provided with a through type inserting hole (11), and the clamping shaft I (2) and the clamping shaft II (3) are inserted into the inserting hole (11).

3. The crankset riveting device according to claim 2, characterized in that: two corresponding clamping grooves (12) are formed in the inner wall of the inserting hole (11), clamping blocks (13) are integrally formed in positions, corresponding to the clamping grooves (12), of the first clamping shaft (2) and the second clamping shaft (3), the clamping blocks (13) are matched with the clamping blocks (13), and the clamping blocks (13) are clamped with the clamping grooves (12).

4. The crankset riveting device according to claim 1, characterized in that: the clamping shaft II (3) is integrally provided with a mounting shaft (16), a round hole (14) is formed in the position, corresponding to the mounting shaft (16), of the clamping shaft I (2), and the round hole (14) is connected with the mounting shaft (16) in an inserting mode.

5. Crank-riveting device according to claim 4, characterized in that: multiunit inside groove (15) have been seted up to the equidistance on the inner wall of round hole (14), integrated into one piece has arch (7) on the position that installation axle (16) corresponds inside groove (15), arch (7) and inside groove (15) looks adaptation, (17) are in the same place with inside groove (15) activity joint.