CN215043434U

CN215043434U - Length-adjustable bicycle crank

Info

Publication number: CN215043434U
Application number: CN202120897696.8U
Authority: CN
Inventors: 魏乃国
Original assignee: Tianjin Shuangxinlong Bicycle Accessories Co ltd
Current assignee: Tianjin Shuangxinlong Bicycle Accessories Co ltd
Priority date: 2021-04-27
Filing date: 2021-04-27
Publication date: 2021-12-07
Anticipated expiration: 2031-04-27

Abstract

The utility model discloses a length-adjustable bicycle crank, including first crank, a plurality of sockets have all been seted up to first articulate left and right sides, first articulate inside is seted up flutedly, it is provided with the second crank to slide in the recess, left and right sides in the recess all is provided with stabilizing mean. The utility model is provided with the stabilizing mechanism, the sliding rod and the adjusting mechanism, before riding a bicycle, the inserting block is pressed to slide into the groove according to the actual height and the leg length of a person, and then the second crank is pulled downwards to be inserted into other sockets, so that the positions of the first crank and the second crank are adjusted, and the length adjustment of the whole crank is realized; meanwhile, the mounting block, the limiting mechanism and the connecting rod are arranged, so that when the pedal is not used, the pull rod can be pulled to drive the sliding block to move to enable the sliding block to be away from the square groove, the pedal can be rotated, the pedal can be folded, and the bicycle can be more conveniently transported.

Description

Length-adjustable bicycle crank

Technical Field

The utility model relates to a bicycle crank technical field specifically is a length-adjustable bicycle crank.

Background

The bicycle is a common tool for transportation, recreation and body building, brings great convenience to the travel of common people, and people who do sports and body building also like riding, so the use of the bicycle is more and more common, and the bicycle crank is one of the necessary accessories of the bicycle.

The following problems exist when using the existing bicycle cranks:

1. when people with different heights ride the bicycle, the riding experience effect of riders is poor due to the fact that the length of the crank is not adjustable;

2. when the bicycle is transported, the crank is connected with the pedal push rod through the bolt, so the pedal cannot rotate and occupies large space, and the transportation of the bicycle is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a length-adjustable bicycle crank to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a length adjustable bicycle crank, includes first crank, a plurality of sockets have all been seted up to first articulate left and right sides, first articulate inside is seted up flutedly, it is provided with the second crank to slide in the recess, the left and right sides in the recess all is provided with stabilizing mean, second articulate left and right sides middle part all is provided with adjustment mechanism, the installation piece is installed to second articulate right side lower extreme, the rectangular channel has been seted up in the installation piece, be provided with stop gear in the rectangular channel, the right side of installation piece is rotated and is installed the connecting rod, the pedal is installed on the right side of connecting rod.

Preferably, the stabilizing mechanism comprises a vertical rod and a first spring, the vertical rod is mounted at the top end of the inner portion of the groove, the first spring is mounted on the vertical rod, and a sliding rod is mounted at the bottom of the vertical rod.

Preferably, adjustment mechanism includes fixed block, two second springs, inserted block, the fixed block is installed in first articulate one side, the fixed block is kept away from second articulate one side and is seted up the spout, the second spring is installed in the spout, the inserted block is installed in the one end that the spout inner wall was kept away from to the second spring, and the one end that the second spring was kept away from to the inserted block runs through out the socket, the through-hole has been seted up to the inside of inserted block, inserted block and slide bar sliding connection.

Preferably, the upper ends of the left side and the right side of the second crank are respectively provided with a connecting block, the connecting blocks are connected with the vertical rods in a sliding mode, and the bottoms of the connecting blocks are connected with the top end of the first spring.

Preferably, the limiting mechanism comprises a third spring, a sliding block and a pull rod, the third spring is installed in the rectangular groove, the sliding block is installed at one end, far away from the inner wall of the rectangular groove, of the third spring, one end, far away from the third spring, of the sliding block penetrates through the rectangular groove, the pull rod is installed at the bottom end of the sliding block, and the rectangular groove penetrates through the bottom end of the pull rod.

Preferably, a square groove is formed in the left side of the connecting rod, and the sliding block is a square block and penetrates into the slot from the right end of the sliding block.

Preferably, a middle shaft is installed at the upper end of the left side of the first crank, and a fluted disc is installed on the middle shaft.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model is provided with the stabilizing mechanism, the sliding rod and the adjusting mechanism, before riding a bicycle, the inserting block is pressed to slide into the groove according to the actual height and the leg length of a person, and then the second crank is pulled downwards to be inserted into other sockets, so that the positions of the first crank and the second crank are adjusted, and the length adjustment of the whole crank is realized;

2. the utility model discloses still set up installation piece, stop gear and connecting rod simultaneously, made the pedal when not using, can stimulate the pull rod and drive the slider and remove and make it keep away from square groove to can rotate the pedal, and then can fold the pedal, convenience that can be more when making the bicycle transport.

Drawings

Fig. 1 is a front sectional view of the present invention;

FIG. 2 is an enlarged view of the structure of part A in FIG. 1;

FIG. 3 is an enlarged schematic view of the structure of part B in FIG. 1;

fig. 4 is an enlarged schematic view of a part C of fig. 1.

In the figure: 1. a first crank; 2. a second crank; 3. a stabilizing mechanism; 31. a vertical rod; 32. a first spring; 4. an adjustment mechanism; 41. a fixed block; 42. a second spring; 43. inserting a block; 5. mounting blocks; 6. a limiting mechanism; 61. a third spring; 62. a slider; 63. a pull rod; 7. a connecting rod; 8. pedaling; 9. a slide bar; 10. connecting blocks; 11. a middle shaft; 12. and C, a fluted disc.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a bicycle crank with adjustable length comprises a first crank 1, wherein a plurality of sockets are formed in the left side and the right side of the first crank 1, a groove is formed in the first crank 1, a second crank 2 is arranged in the groove in a sliding mode, stabilizing mechanisms 3 are arranged on the left side and the right side in the groove, adjusting mechanisms 4 are arranged in the middle of the left side and the right side of the second crank 2, an installation block 5 is installed at the lower end of the right side of the second crank 2, a rectangular groove is formed in the installation block 5, a limiting mechanism 6 is arranged in the rectangular groove, a connecting rod 7 is installed on the right side of the installation block 5 in a rotating mode, and pedals 8 are installed on the right side of the connecting rod 7;

stabilizing mean 3 includes montant 31 and first spring 32, montant 31 is installed on the inside top of recess, first spring 32 is installed on montant 31, slide bar 9 is installed to the bottom of montant 31, adjustment mechanism 4 includes fixed block 41, two second springs 42, inserted block 43, fixed block 41 is installed in one side of first crank 1, the spout has been seted up to one side that second crank 2 was kept away from to fixed block 41, second spring 42 is installed in the spout, inserted block 43 is installed in the one end that second spring 42 kept away from the spout inner wall, and the one end that second spring 42 was kept away from to inserted block 43 runs through out the socket, the through-hole has been seted up to the inside of inserted block 43, inserted block 43 and slide bar 9 sliding connection, second crank 2's the left and right sides upper end all is provided with connecting block 10, connecting block 10 and montant 31 sliding connection, and the bottom of connecting block 10 is connected with the top of first spring 32, stop gear 6 includes third spring 61, Slider 62, pull rod 63, third spring 61 installs in the rectangular channel, slider 62 installs the one end of keeping away from the rectangular channel inner wall at third spring 61, and the one end that third spring 61 was kept away from to slider 62 runs through out the rectangular channel, pull rod 63 installs the bottom at slider 62, and pull rod 63's bottom runs through out the rectangular channel, square groove has been seted up on the left side of connecting rod 7, slider 62 runs through into the slot for the right-hand member of square piece and slider 62, axis 11 is installed to first crank 1's left side upper end, epaxial fluted disc 12 of installing of axis 11.

The working principle is as follows: when the utility model is used, before riding a bicycle, according to the actual height and leg length of an individual, the inserting block 43 is manually pressed to slide the inserting block 43 into the groove through the socket, then the second crank 2 is pulled downwards to select a proper socket, then the inserting block 43 is inserted into the socket through the elastic acting force of the second spring 42, thereby the positions of the first crank 1 and the second crank 2 are adjusted, further the length adjustment of the whole crank is realized, and the adjustment is simple and convenient, in the downward movement process of the second crank 2, the second crank 2 can be more stable when moving downwards through the vertical rod 31, the connecting block 10 and the first spring 32, and the second crank 2 can be more stable when being stressed through the slide rod 9, the riding is not influenced, when the pedal 8 needs to be folded, the pull rod 63 is pulled leftwards, the pull rod 63 moves to drive the slide block 62 to move, the slide block 62 moves to be square and is far away from the groove, at this moment, pedal 8 is not by spacingly, then rotatory pedal 8 this moment can be folded pedal 8, and then make the bicycle can be more convenient when the transportation, and when using pedal 8, only need with slider 62 inject square inslot can, simple and convenient has simple structure, can adjust articulate length according to individual particular case and can realize pedal 8's folding advantage.

It is noted that, herein, relational terms such as first and second, and the like may 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. Also, 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 may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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

Claims

1. A length-adjustable bicycle crank, comprising a first crank (1), characterized in that: a plurality of sockets have all been seted up to the left and right sides of first crank (1), the inside of first crank (1) is seted up flutedly, it is provided with second crank (2) to slide in the recess, the left and right sides in the recess all is provided with stabilizing mean (3), the left and right sides middle part of second crank (2) all is provided with adjustment mechanism (4), the right side lower extreme of second crank (2) is provided with installation piece (5), the rectangular channel has been seted up in installation piece (5), be provided with stop gear (6) in the rectangular channel, the right side of installation piece (5) is rotated and is provided with connecting rod (7), the right side of connecting rod (7) is provided with pedal (8).

2. A length adjustable bicycle crank according to claim 1, wherein: stabilizing mean (3) include montant (31) and first spring (32), the inside top at the recess is installed in montant (31), install on montant (31) first spring (32), slide bar (9) are installed to the bottom of montant (31).

3. A length adjustable bicycle crank according to claim 2, wherein: adjustment mechanism (4) are including fixed block (41), two second springs (42), inserted block (43), one side at first crank (1) is installed in fixed block (41), the spout has been seted up to one side that second crank (2) were kept away from in fixed block (41), second spring (42) are installed in the spout, the one end of keeping away from the spout inner wall in second spring (42) is installed in inserted block (43), and the one end that second spring (42) were kept away from in inserted block (43) runs through out the socket, the through-hole has been seted up to the inside of inserted block (43), inserted block (43) and slide bar (9) sliding connection.

4. A length adjustable bicycle crank according to claim 2, wherein: the upper ends of the left side and the right side of the second crank (2) are respectively provided with a connecting block (10), the connecting blocks (10) are connected with a vertical rod (31) in a sliding mode, and the bottom of each connecting block (10) is connected with the top end of a first spring (32).

5. A length adjustable bicycle crank according to claim 1, wherein: stop gear (6) include third spring (61), slider (62), pull rod (63), third spring (61) are installed in the rectangular channel, slider (62) are installed in the one end of keeping away from the rectangular channel inner wall in third spring (61), and slider (62) keep away from the one end of third spring (61) and run through the rectangular channel, the bottom at slider (62) is installed in pull rod (63), just the bottom of pull rod (63) runs through the rectangular channel.

6. A length adjustable bicycle crank according to claim 5, characterized in that: the left side of connecting rod (7) has seted up square groove, slider (62) are square piece and the right-hand member of slider (62) runs through into in the slot.

7. A length adjustable bicycle crank according to claim 1, wherein: a middle shaft (11) is installed at the upper end of the left side of the first crank (1), and a fluted disc (12) is installed on the middle shaft (11).