CN219728465U - Bicycle sprocket crank convenient to adjust - Google Patents
Bicycle sprocket crank convenient to adjust Download PDFInfo
- Publication number
- CN219728465U CN219728465U CN202320573411.4U CN202320573411U CN219728465U CN 219728465 U CN219728465 U CN 219728465U CN 202320573411 U CN202320573411 U CN 202320573411U CN 219728465 U CN219728465 U CN 219728465U
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- wall
- sleeve
- connecting shaft
- crank
- thread groove
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- 230000013011 mating Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 9
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a bicycle sprocket crank convenient to adjust, which relates to the technical field of bicycles and comprises a connecting shaft; the connecting sleeve is arranged on the outer wall of the connecting shaft, and the chain wheel main body is fixed on the outer wall of the connecting sleeve; the two ends of the connecting shaft are respectively and correspondingly provided with a first shaft sleeve and a second shaft sleeve, wherein a first crank is fixed on the outer wall of the first shaft sleeve, and a second crank is fixed on the outer wall of the second shaft sleeve; the outer wall of the connecting shaft is provided with a first threaded hole; a threaded hole II matched with the threaded hole I is formed in the outer wall of the connecting sleeve; the first threaded hole and the second threaded hole are internally connected with the threaded column in a threaded manner, and the rotary bar is fixed at the top of the threaded column.
Description
Technical Field
The utility model relates to the technical field of bicycles, in particular to a bicycle sprocket crank convenient to adjust.
Background
The chain wheel is a wheel with cog type sprocket for meshing with blocks with accurate pitch on chain links or cables, in a bicycle, a chain wheel crank is matched with the chain, so that the power of a person can be transmitted to a rear wheel to drive the bicycle forward, and the chain wheel crank can enable the speed of the bicycle to be faster.
Through retrieval, china patent net discloses an integral double-fluted disc sprocket crank, with the publication number of CN215043447U, which has higher rust resistance, is an integral sprocket crank, has higher strength and is not easy to loosen and damage, but the sprocket in the comparison document is inconvenient to detach from a connecting shaft, so that the sprocket is inconvenient to replace and maintain in the later period;
and the crank is also inconvenient to detach from the connecting shaft, and is inconvenient to adjust or maintain.
Disclosure of Invention
The technical problem to be solved by the utility model is to provide a bicycle sprocket crank convenient to adjust, so as to solve the problem that the sprocket in the comparison document proposed in the background art is inconvenient to detach from a connecting shaft, thereby being inconvenient to replace and maintain the sprocket in the later period;
and the crank is also inconvenient to detach from the connecting shaft, and is inconvenient to adjust or maintain.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
a bicycle sprocket crank for easy adjustment comprising:
a connecting shaft;
the connecting sleeve is arranged on the outer wall of the connecting shaft, and the chain wheel main body is fixed on the outer wall of the connecting sleeve;
the two ends of the connecting shaft are respectively and correspondingly provided with a first shaft sleeve and a second shaft sleeve, wherein a first crank is fixed on the outer wall of the first shaft sleeve, and a second crank is fixed on the outer wall of the second shaft sleeve;
the outer wall of the connecting shaft is provided with a first threaded hole;
a threaded hole II matched with the threaded hole I is formed in the outer wall of the connecting sleeve;
the first threaded hole and the second threaded hole are internally and in threaded connection with threaded columns, and the tops of the threaded columns are fixedly provided with rotating strips.
As a further scheme of the utility model, a chute is formed on the outer wall of the connecting shaft, a sliding block is connected in a sliding manner in the chute, and one end of the sliding block is fixed with the inner wall of the connecting sleeve;
the connecting sleeve is connected to the outer wall of the connecting shaft in a sliding manner through a sliding groove matched with the sliding block.
As a further scheme of the utility model, the outer wall of the connecting shaft is provided with a first internal thread groove and a second internal thread groove, the inner wall of the shaft sleeve is provided with a first external thread matched with the first internal thread groove, and the inner wall of the shaft sleeve is provided with a second external thread matched with the second internal thread groove.
As a further scheme of the utility model, the first shaft sleeve is connected to the outer wall of the connecting shaft through the first external thread and the first internal thread groove.
As a further scheme of the utility model, the second shaft sleeve is in threaded connection with the outer wall of the connecting shaft through the second external thread matched with the second internal thread groove.
As a further scheme of the utility model, the screwing direction of the first internal thread groove and the first external thread is consistent with the rotation direction of the chain wheel main body and the connecting shaft in the advancing running process of the bicycle.
As a further scheme of the utility model, the screw tightening direction of the second internal thread groove and the second external thread is consistent with the rotation direction of the chain wheel main body and the connecting shaft in the advancing running process of the bicycle.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model changes the connection mode of the connecting shaft and the chain wheel main body, specifically, the chain wheel main body is sleeved on the outer wall of the connecting shaft through the connecting sleeve, in the process, the threaded hole I and the threaded hole II are required to be corresponding, then the threaded column is placed into the threaded hole I and the threaded hole II, the threaded column is screwed down through the rotating strip, the chain wheel main body can be fixed, when the chain wheel main body is required to be disassembled, the threaded column is rotated through the rotating strip, and after the threaded column is separated from the threaded hole I and the threaded hole II, the chain wheel main body can be removed from the outer wall of the connecting shaft, so that the chain wheel main body is disassembled.
The utility model changes the connection mode of the first crank and the second crank, specifically, the first crank is connected on the outer wall of the connecting shaft through the first external thread and the first internal thread groove in a threaded manner, and the second crank is connected on the outer wall of the connecting shaft through the second external thread and the second internal thread groove in a threaded manner, so that when the first crank and the second crank are disassembled, only the first crank and the second crank are required to reversely rotate along the screwing direction, and compared with the prior art, the utility model is convenient for disassembling the first crank and the second crank, thereby being convenient for adjusting or maintaining the first crank and the second crank.
Drawings
FIG. 1 is a schematic perspective view of the present utility model;
FIG. 2 is a schematic view of a portion of the structure of the present utility model;
FIG. 3 is a schematic view of a first threaded hole and a second threaded hole in the present utility model;
fig. 4 is a schematic view of a threaded column according to the present utility model.
In the figure: 101. a connecting shaft; 102. connecting sleeves; 103. a sprocket body; 104. a first shaft sleeve; 105. a crank I; 106. a second shaft sleeve; 107. a second crank; 108. a threaded hole II; 109. a first threaded hole; 110. a threaded column; 111. rotating the strip; 112. a chute; 113. a slide block; 114. and an internal thread groove I.
Detailed Description
The following describes the embodiments of the present utility model further with reference to the drawings. The description of these embodiments is provided to assist understanding of the present utility model, but is not intended to limit the present utility model. In addition, the technical features of the embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.
Example 1
Referring to fig. 1-4, the present utility model provides a technical solution: a bicycle sprocket crank that is easy to adjust, comprising a connecting shaft 101; the outer wall of the connecting shaft 101 is provided with a connecting sleeve 102, and the outer wall of the connecting sleeve 102 is fixedly provided with a chain wheel main body 103; the two ends of the connecting shaft 101 are respectively and correspondingly provided with a first shaft sleeve 104 and a second shaft sleeve 106, wherein a first crank 105 is fixed on the outer wall of the first shaft sleeve 104, and a second crank 107 is fixed on the outer wall of the second shaft sleeve 106; the outer wall of the connecting shaft 101 is provided with a first threaded hole 109; a threaded hole II 108 matched with the threaded hole I109 is formed in the outer wall of the connecting sleeve 102; the first threaded hole 109 and the second threaded hole 108 are internally and in threaded connection with a threaded column 110, a rotating bar 111 is fixed at the top of the threaded column 110, a sliding groove 112 is formed in the outer wall of the connecting shaft 101, a sliding block 113 is in sliding connection with the sliding groove 112, and one end of the sliding block 113 is fixed with the inner wall of the connecting sleeve 102; the connecting sleeve 102 is slidably connected to the outer wall of the connecting shaft 101 through a sliding groove 112 and a sliding block 113.
In this embodiment, through being provided with spout 112, slider 113, can avoid sprocket main body 103 to take place to rotate on connecting axle 101 outer wall under spout 112, slider 113's cooperation to sprocket main body 103's stability has been guaranteed, and then bicycle riding efficiency or stability have been improved.
Specifically, the connection mode of the connecting shaft 101 and the sprocket body 103 is changed, specifically, the sprocket body 103 is sleeved on the outer wall of the connecting shaft 101 through the connecting sleeve 102, and it is noted that in the process, the threaded holes 109 and 108 are required to be corresponding, then the threaded column 110 is placed into the threaded holes 109 and 108, and then the threaded column is screwed through the rotating strip 111, so that the sprocket body 103 can be fixed, when the sprocket body 103 is required to be disassembled, the threaded column 110 is rotated through the rotating strip 111, and after the threaded column 110 is separated from the threaded holes 109 and 108, the sprocket body 103 can be removed from the outer wall of the connecting shaft 101, so that the sprocket body 103 is disassembled.
Example 2
Referring to fig. 1-3, the present utility model provides a technical solution: a bicycle sprocket crank convenient to adjust, set up internal thread groove one 114 on the connecting axle 101 outer wall, internal thread groove two, set up on the axle sleeve one 104 inner wall with internal thread groove one 114 matched with external thread one, set up on the axle sleeve two 106 inner wall with internal thread groove two matched with external thread two, axle sleeve one 104 passes through external thread one to cooperate with internal thread groove one 114 threaded connection on the connecting axle 101 outer wall, axle sleeve two 106 passes through external thread two to cooperate with internal thread groove two threaded connection on the connecting axle 101 outer wall, internal thread groove one 114, external thread one's screw tightening direction is unanimous with sprocket main part 103, connecting axle 101 rotation direction in the bicycle forward running, internal thread groove two, external thread two's screw tightening direction is unanimous with sprocket main part 103, connecting axle 101 rotation direction in the bicycle forward running.
In this embodiment, since the screw tightening direction of the first internal thread groove 114 and the first external thread is consistent with the rotation direction of the sprocket body 103 and the connecting shaft 101 during the forward running process of the bicycle, the screw tightening direction of the second internal thread groove and the second external thread is consistent with the rotation direction of the sprocket body 103 and the connecting shaft 101 during the forward running process of the bicycle, when the sprocket body 103 and the connecting shaft 101 rotate, the first crank 105 and the second crank 107 are in a tightening state, so that the first crank 105 and the second crank 107 are prevented from loosening or falling off during the rotation operation of the sprocket body 103 and the connecting shaft 101, and the riding efficiency or the stability of the bicycle is improved.
Specifically, the first crank 105 is connected to the outer wall of the connecting shaft 101 by the first shaft sleeve 104 through the first external thread matched with the first internal thread groove 114, and the second crank 107 is connected to the outer wall of the connecting shaft 101 by the second shaft sleeve 106 through the second external thread matched with the second internal thread groove, so that when the first crank 105 and the second crank 107 are disassembled, only the first crank 105 and the second crank 107 are required to reversely rotate along the screw tightening direction, and compared with the prior art, the utility model is convenient for disassembling the first crank 105 and the second crank 107, thereby being convenient for adjusting or maintaining the first crank 105 and the second crank 107.
Working principle:
firstly, the connection mode of the connecting shaft 101 and the sprocket body 103 is changed, specifically, the sprocket body 103 is sleeved on the outer wall of the connecting shaft 101 through the connecting sleeve 102, in the process, the threaded holes 109 and 108 are required to be correspondingly arranged, then the threaded column 110 is arranged in the threaded holes 109 and 108, the threaded column is screwed by the rotating strip 111, the sprocket body 103 can be fixed, when the sprocket body 103 is required to be disassembled, the threaded column 110 is rotated by the rotating strip 111, and after the threaded column 110 is separated from the threaded holes 109 and 108, the sprocket body 103 can be removed from the outer wall of the connecting shaft 101, so that the sprocket body 103 is disassembled;
secondly, the connection mode of the first crank 105 and the second crank 107 is changed, specifically, firstly, the first crank 105 is connected to the outer wall of the connecting shaft 101 through the first external thread and the first internal thread groove 114 in a threaded manner by the first shaft sleeve 104, and the second crank 107 is connected to the outer wall of the connecting shaft 101 through the second external thread and the second internal thread groove in a threaded manner by the second shaft sleeve 106, so that when the first crank 105 and the second crank 107 are disassembled, only reverse rotation is needed along the screwing direction of the first crank 105 and the second crank 107;
finally, as the screw tightening directions of the first internal screw thread groove 114 and the first external screw thread are consistent with the rotation directions of the sprocket body 103 and the connecting shaft 101 in the advancing running process of the bicycle, and the screw tightening directions of the second internal screw thread groove and the second external screw thread are consistent with the rotation directions of the sprocket body 103 and the connecting shaft 101 in the advancing running process of the bicycle, when the sprocket body 103 and the connecting shaft 101 rotate, the first crank 105 and the second crank 107 are in a tightening state, so that the first crank 105 and the second crank 107 are prevented from loosening or falling off when the sprocket body 103 and the connecting shaft 101 rotate and work, and the riding efficiency or stability of the bicycle is improved;
through being provided with spout 112, slider 113, can avoid sprocket main part 103 to take place to rotate on connecting axle 101 outer wall under spout 112, slider 113's cooperation to sprocket main part 103's stability has been guaranteed, and then bicycle riding efficiency or stability have been improved.
The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings, but the present utility model is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the utility model, and yet fall within the scope of the utility model.
Claims (7)
1. A bicycle sprocket crank for easy adjustment, comprising:
a connecting shaft (101);
a connecting sleeve (102) is arranged on the outer wall of the connecting shaft (101), and a chain wheel main body (103) is fixed on the outer wall of the connecting sleeve (102);
the two ends of the connecting shaft (101) are respectively and correspondingly provided with a first shaft sleeve (104) and a second shaft sleeve (106), wherein a first crank (105) is fixed on the outer wall of the first shaft sleeve (104), and a second crank (107) is fixed on the outer wall of the second shaft sleeve (106);
a first threaded hole (109) is formed in the outer wall of the connecting shaft (101);
a threaded hole II (108) matched with the threaded hole I (109) is formed in the outer wall of the connecting sleeve (102);
the screw hole I (109) and the screw hole II (108) are internally connected with a screw column (110) in a threaded manner, and a rotating strip (111) is fixed at the top of the screw column (110).
2. The bicycle sprocket crank convenient to adjust according to claim 1, wherein a chute (112) is formed on the outer wall of the connecting shaft (101), a sliding block (113) is connected in a sliding manner in the chute (112), and one end of the sliding block (113) is fixed with the inner wall of the connecting sleeve (102);
the connecting sleeve (102) is connected to the outer wall of the connecting shaft (101) in a sliding manner through a sliding groove (112) and a sliding block (113).
3. The bicycle sprocket crank as set forth in claim 1, wherein the outer wall of the connecting shaft (101) is provided with a first internal thread groove (114) and a second internal thread groove, the inner wall of the first sleeve (104) is provided with a first external thread matching the first internal thread groove (114), and the inner wall of the second sleeve (106) is provided with a second external thread matching the second internal thread groove.
4. A bicycle sprocket crank according to claim 3, wherein the first sleeve (104) is threaded onto the outer wall of the connecting shaft (101) by means of an external thread mating with an internal thread groove (114).
5. A bicycle sprocket crank according to claim 3, wherein the second sleeve (106) is threaded onto the outer wall of the connecting shaft (101) by means of a second external thread engaging with a second internal thread groove.
6. A bicycle sprocket crank according to claim 3, wherein the first internal thread groove (114) and the first external thread groove have a thread tightening direction which is consistent with a rotation direction of the sprocket body (103) and the connecting shaft (101) during forward running of the bicycle.
7. A bicycle sprocket crank according to claim 3, wherein the second internal thread groove and the second external thread groove have a thread tightening direction which is consistent with a rotation direction of the sprocket body (103) and the connecting shaft (101) during forward running of the bicycle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320573411.4U CN219728465U (en) | 2023-03-22 | 2023-03-22 | Bicycle sprocket crank convenient to adjust |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320573411.4U CN219728465U (en) | 2023-03-22 | 2023-03-22 | Bicycle sprocket crank convenient to adjust |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219728465U true CN219728465U (en) | 2023-09-22 |
Family
ID=88060181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320573411.4U Active CN219728465U (en) | 2023-03-22 | 2023-03-22 | Bicycle sprocket crank convenient to adjust |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219728465U (en) |
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2023
- 2023-03-22 CN CN202320573411.4U patent/CN219728465U/en active Active
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