CN204489062U - A kind of double-shaft eccentric catch gear and folding joint - Google Patents
A kind of double-shaft eccentric catch gear and folding joint Download PDFInfo
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- CN204489062U CN204489062U CN201520097716.8U CN201520097716U CN204489062U CN 204489062 U CN204489062 U CN 204489062U CN 201520097716 U CN201520097716 U CN 201520097716U CN 204489062 U CN204489062 U CN 204489062U
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- draw ring
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Abstract
The utility model discloses a kind of double-shaft eccentric catch gear, comprise: handle, be located at a pair clamping plate of handle one end, the eccentric orfice of lateral penetration two clamping plate, one end is provided with and is laterally provided with circular hole, the other end is axially arranged with the draw ring of tapped bore, one end fits is located at the bolt in tapped bore, vee-block and the spring of the bolt other end is placed on successively towards draw ring, draw ring establishes this end round-meshed to stretch between two clamping plate, laterally a jointed shaft and an eccentric shaft is provided with in circular hole, jointed shaft and eccentric shaft cylindrical tangent, the shape of eccentric orfice and jointed shaft, the outline of eccentric shaft matches, jointed shaft two ends are passed clamping plate and are fixedly installed, eccentric shaft two ends are stretched in eccentric orfice.The utility model also proposed a kind of folding joint with above-mentioned double-shaft eccentric catch gear.The utility model is by eccentric shaft and the tangent setting of jointed shaft, and this cross-compound arrangement makes the rotary resistance of eccentric shaft little, rotates more smooth.
Description
Technical field
The utility model relates to folding device, especially relates to a kind of double-shaft eccentric catch gear for folding bicycle and folding joint.
Background technology
Folding bicycle, with the feature of its fast folding or expansion, obtains liking of consumers in general.After bicycle is folding, smaller volume, greatly facilitates transport and storage; Can use safely again after expansion, be convenient to people's sport and body-building or ride instead of walk.Folding bicycle great majority in market are folding joint, usually folded downwards by the handlebar stem of eccentric locking mechanism by bicycle, to reduce the height of car load, thus the space reduced shared by bicycle, be provided with jointed shaft and eccentric cam in eccentric locking mechanism, jointed shaft is through eccentric cam, and eccentric cam is enclosed within the circular hole of draw ring, drive eccentric cam to rotate by jointed shaft, drive latch assembly lock or open folding joint by eccentric cam.
Existing eccentric locking mechanism has following shortcoming:
1, the accuracy requirement of eccentric cam is high, and its tooling cost is very high;
2, in eccentric locking mechanism to be connected and fixed structure more, assembling is inconvenient;
3, the friction force between eccentric cam and draw ring is large, and opening or close folding joint needs very energetically, uses more inconvenient;
4, eccentric stroke is non-adjustable, and changing eccentric stroke needs to redesign eccentric cam, and identical change eccentric orfice, calculating, the course of processing of eccentric are complicated, not easily change.
Therefore, how to design a kind of process simple, rotation friction is little, the double-shaft eccentric catch gear that conveniently can adjust eccentric stroke and folding joint are industry technical matters urgently to be resolved hurrily.
Utility model content
For solving the problems of the technologies described above, the utility model provide a kind of process simple, rotation friction is little, double-shaft eccentric catch gear and the folding joint that conveniently can adjust eccentric stroke.
A kind of double-shaft eccentric catch gear that the utility model proposes, comprise: handle, be located at a pair clamping plate of handle one end, the eccentric orfice of lateral penetration two clamping plate, eccentric orfice is formed by the concentric big hole be connected and eccentric elongated hole, one end is provided with and is laterally provided with circular hole, the other end is axially arranged with the draw ring of tapped bore, one end fits is located at the bolt in tapped bore, vee-block and the spring of the bolt other end is placed on successively towards draw ring, draw ring establishes this end round-meshed to stretch between two clamping plate, laterally a jointed shaft and an eccentric shaft is provided with in circular hole, jointed shaft and eccentric shaft cylindrical tangent, the shape of eccentric orfice and jointed shaft, the outline of eccentric shaft matches, jointed shaft two ends are passed clamping plate and are fixedly installed, eccentric shaft two ends are stretched in eccentric orfice.
Preferably, jointed shaft, eccentric shaft diameter sum and draw ring Circularhole diameter free-running fit.
Preferably, fitted between the head of bolt and vee-block by conical suface, bolt head is circular conical surface towards the end face edge of vee-block, and vee-block is provided with towards the end face center of bolt head the conical bore coordinated with circular conical surface.
Preferably, one end that draw ring is provided with tapped bore is also provided with nut, and bolt is fixed in the tapped bore of draw ring through nut.
The utility model also proposed a kind of folding joint with above-mentioned double-shaft eccentric catch gear, comprise: side, top is provided with the lower adaptor of a pair lower plate, side, bottom is provided with the top connection of a pair train wheel bridge, be located at boss that is upper bottom top connection and train wheel bridge opposite side, lower adaptor end face is provided with the cavity that can hold boss.
The inner side being positioned at two lower plates is coordinated respectively outside two clamping plate of handle, the inner side being positioned at two train wheel bridges is coordinated respectively outside two lower plates, penetrate two lower plates and two train wheel bridges and the hinge hole that coordinates with jointed shaft of size, jointed shaft two ends are also rotatably fixed on two train wheel bridges through hinge hole, bolt activity is fixed in the tapped bore of draw ring through boss, and spring-compressed is connected between vee-block and boss.
Wherein, the opposite side edge that lower adaptor top arranges lower plate is provided with lower concave part, and the opposite side edge arranging train wheel bridge bottom top connection is provided with upper recess, the shape that upper recess, lower concave part are combined and vee-block form fit.
Preferably, vee-block is provided with a pair holding section of protrusion side by side up and down towards the end face of spring, and this can coordinate holding section and inserts in described upper recess and lower concave part.
The utility model changes eccentric cam of the prior art into eccentric shaft, eccentric shaft and the tangent setting of jointed shaft, two tangent eccentric shafts and jointed shaft are equipped with in draw ring circular hole, eccentric shaft rotates around jointed shaft, drive draw ring eccentric motion simultaneously, namely eccentric shaft is centered by jointed shaft, rotates between jointed shaft and draw ring circular hole.This cross-compound arrangement makes eccentric shaft be linear contact lay between jointed shaft and draw ring circular hole, and the rotary resistance of eccentric shaft is little, rotates more smooth.And, eccentric shaft and jointed shaft are circular shaft, processing is simple, and tooling cost is relatively low, and mounting structure is also very simple, be conducive to the efficiency improving process and assemble, further, eccentric stroke of the present utility model is adjustable, only need according to changing the diameter eccentric shaft identical with eccentric distance, and coordinating increasing again by the circular hole of draw ring and eccentric orfice, easy to process being easy to converts.
Accompanying drawing explanation
Below in conjunction with embodiment and accompanying drawing, the utility model is described in detail, wherein:
Fig. 1 is fractionation schematic diagram of the present utility model;
Generalized section when Fig. 2 is the utility model locking;
Fig. 3 is the generalized section of the utility model when opening.
Detailed description of the invention
As shown in Figure 1, the double-shaft eccentric catch gear that the utility model proposes, comprising: handle 1, draw ring 4, bolt 5, vee-block 6 and spring 7.
One end of handle 1 is provided with a pair clamping plate 2, two clamping plate 2 and extends to form along the two sides of handle respectively, and be provided with spacing between two clamping plate 2, and two clamping plate are provided with the eccentric orfice 3 of lateral penetration, eccentric orfice 3 is formed by the concentric big hole be connected and eccentric elongated hole.Draw ring 4 one end is laterally provided with circular hole, and the other end is axially arranged with tapped bore, and draw ring 4 sets round-meshed one end as annulus, and annulus stretches between two clamping plate 2.Laterally a jointed shaft 8 and eccentric shaft 9 is provided with in circular hole, this jointed shaft 8 and eccentric shaft 9 cylindrical tangent, the shape of eccentric orfice 3 matches with the outline of jointed shaft 8, eccentric shaft 9, and jointed shaft 8 two ends are passed clamping plate and are fixedly installed, and eccentric shaft 9 two ends are stretched in eccentric orfice 3.When handle 1 rotates, eccentric orfice 3 drives eccentric shaft 9 to rotate around jointed shaft 8, thus promotion draw ring 4 does eccentric motion.This cross-compound arrangement makes eccentric shaft be linear contact lay between jointed shaft and draw ring circular hole, and the rotary resistance of eccentric shaft is little, rotates more smooth.
Bolt 5 establishes threaded one end fits to be located in the tapped bore of draw ring 4, and the head of bolt 5 overlaps successively towards draw ring 4 and has vee-block 6 and spring 7.Bolt and vee-block is driven to do eccentric motion while draw ring 4 does eccentric motion.
Preferably, jointed shaft 8, eccentric shaft 9 diameter sum and draw ring 4 Circularhole diameter free-running fit, be arranged so that eccentric locking mechanism is compacter like this, eccentric shaft 9 is centered by jointed shaft 8, rotate between jointed shaft 8 and draw ring 4 circular hole, namely the eccentric stroke that draw ring 4 seesaws is the diameter of eccentric shaft 9, convenience calculates and Stability Analysis of Structures is effective, according to changing the diameter eccentric shaft 9 identical with eccentric distance, and coordinate increasing again by the circular hole of draw ring 4 and eccentric orfice, i.e. adjustable eccentric stroke of the present utility model.
Preferably, fitted between the head of bolt 5 and vee-block 6 by conical suface 10, bolt 5 head is circular conical surface towards the end face edge of vee-block 6, and vee-block 6 is provided with towards the end face center of bolt head the conical bore coordinated with circular conical surface.Conical suface 10 not only close fit degree is higher and have the effect of guiding, facilitates the location between vee-block 6 and bolt 5.
Wherein, one end that draw ring 4 is provided with tapped bore is also provided with nut 11, and bolt 5 is fixed in the tapped bore of draw ring 4 through nut 11, nut 11 be arranged so that the connection between bolt 5 and draw ring 4 is more reliable.
As shown in Figures 1 to 3, with the folding joint of the utility model double-shaft eccentric catch gear, comprise: side, top is provided with the lower adaptor 13 of a pair lower plate 12, side, bottom is provided with the top connection 15 of a pair train wheel bridge 14, be located at boss 16 that is upper bottom top connection 15 and train wheel bridge 14 opposite side, lower adaptor 13 end face is provided with the cavity 17 that can hold boss 16.
The inner side being positioned at two lower plates 12 is coordinated respectively outside two clamping plate 2 of handle, the inner side being positioned at two train wheel bridges 14 is coordinated respectively outside two lower plates 12, penetrate two lower plates 12 and two train wheel bridges 14 and the hinge hole 18 that coordinates with jointed shaft 8 of size, jointed shaft 8 two ends are also rotatably fixed on two train wheel bridges 14 through hinge hole 18, by jointed shaft 8, draw ring 4, handle 1, lower adaptor 13 and top connection 15 are hingedly connected together, eccentric shaft 9 two ends are arranged in the eccentric orfice 3 of clamping plate 2, when handle 1 rotates, rotate with handle 1 and promote draw ring 4 and move.During actual use, distance between slightly short and two clamping plate 3 lateral surfaces of the length that eccentric shaft 9 is arranged, owing to being equipped with in the inner side of two lower plates 12 outside two clamping plate 2 respectively, eccentric shaft 9 two ends are limited by the madial wall of lower plate 12, ensure that eccentric shaft 9 on the go can not skid off eccentric orfice 3, Stability Analysis of Structures and quick and easy for installation.
Bolt 5 activity is fixed in the tapped bore of draw ring 4 through boss 16, boss 16 is provided with the perforation with bolt 5 diametric fit, by boss 16 bloster hinge connecting bolt 5, and limit the straight reciprocating motion of hinge bolt 5, spring 7 compression is connected between vee-block 6 and boss 16, boss 16 is provided with the spacing hole with spring 7 diametric fit, the elastic-restoring force of spring 7 is utilized to reduce the pressing force unclamping and to be applied to needed for folding joint on handle 1, simultaneously, during locking folding joint, the elastic-restoring force of spring 7 is conducive to the self-locking of handle 1.
The opposite side edge that lower adaptor 13 top arranges lower plate is provided with lower concave part 19, and the opposite side edge arranging train wheel bridge 14 bottom top connection 15 is provided with upper recess 20, the shape that upper recess 20, lower concave part 19 are combined and vee-block 6 form fit.Preferably, vee-block 6 is provided with a pair holding section 21 of protrusion side by side up and down towards the end face of spring 7, and this can coordinate holding section 21 and inserts in upper recess and lower concave part.
As shown in Figure 2,3, during folding joint locking, eccentric shaft 9 is positioned at the right side of jointed shaft 8, pull handle downwards and unclamp folding joint, now eccentric shaft 9 is along jointed shaft 8 clockwise movement, and promotion draw ring 4 and bolt 5 are to left movement, and spring 7 loosens gradually, vee-block 6 is to left movement, when eccentric shaft 9 moves to the left side of jointed shaft 8, draw ring 4 is positioned at the maximum position of eccentric stroke, and vee-block 6 departs from upper and lower recess completely, now rotate top connection, can folding joint be opened.In like manner, during locking folding joint, upper and lower joint is closed, upwards pull handle 1 to end position.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (7)
1. a double-shaft eccentric catch gear, comprise: handle (1), be located at a pair clamping plate (2) of handle one end, the eccentric orfice (3) of lateral penetration two clamping plate, one end is provided with and is laterally provided with circular hole, the other end is axially arranged with the draw ring (4) of tapped bore, one end fits is located at the bolt (5) in tapped bore, vee-block (6) and the spring (7) of bolt (5) other end is placed on successively towards draw ring, described draw ring (4) establishes this end round-meshed to stretch between two clamping plate (2), it is characterized in that, laterally a jointed shaft (8) and an eccentric shaft (9) is provided with in described draw ring circular hole, described jointed shaft (8) and eccentric shaft (9) cylindrical tangent, the shape of described eccentric orfice (3) and jointed shaft (8), the outline of eccentric shaft (9) matches, described jointed shaft (8) two ends are passed clamping plate and are fixedly installed, described eccentric shaft (9) two ends are stretched in eccentric orfice (3).
2. double-shaft eccentric catch gear as claimed in claim 1, is characterized in that, described jointed shaft (8), eccentric shaft (9) diameter sum and draw ring (4) Circularhole diameter free-running fit.
3. double-shaft eccentric catch gear as claimed in claim 1, it is characterized in that, fitted by conical suface (10) between the head of described bolt (5) and vee-block (6), described bolt head is circular conical surface towards the end face edge of vee-block (6), and described vee-block (6) is provided with towards the end face center of bolt head the conical bore coordinated with described circular conical surface.
4. double-shaft eccentric catch gear as claimed in claim 1, it is characterized in that, one end that described draw ring (4) is provided with tapped bore is also provided with nut (11), and described bolt (5) is fixed in the tapped bore of draw ring (4) through nut (11).
5. double-shaft eccentric catch gear as claimed in claim 1, it is characterized in that, described eccentric orfice (3) is formed by the concentric big hole be connected and eccentric elongated hole.
6. the folding joint with double-shaft eccentric catch gear described in above-mentioned arbitrary claim, it is characterized in that, side, top is provided with the lower adaptor (13) of a pair lower plate (12), side, bottom is provided with the top connection (15) of a pair train wheel bridge (14), be located at the boss (16) with train wheel bridge (14) opposite side on top connection (15) bottom, described lower adaptor (13) end face is provided with and the cavity holding boss (16) (17);
Two clamping plate (2) outside of handle coordinates the inner side being positioned at two lower plates (12) respectively, described two lower plates (12) outside coordinates the inner side being positioned at two train wheel bridges (14) respectively, penetrate two lower plates (12) and two train wheel bridges (14) and the hinge hole (18) that coordinates with jointed shaft (8) of size, described jointed shaft (8) two ends are passed hinge hole (18) and are rotatably fixed on two train wheel bridges (14), described bolt (5) activity is fixed in the tapped bore of draw ring (4) through boss (16), described spring (7) compression is connected between vee-block (6) and boss (16),
The opposite side edge that described lower adaptor (13) top arranges lower plate is provided with lower concave part (19), the opposite side edge that top connection (15) bottom arranges train wheel bridge (14) is provided with upper recess (20), the shape that described upper recess (20), lower concave part (19) are combined and vee-block (6) form fit.
7. folding joint as claimed in claim 6, is characterized in that, described vee-block (6) is provided with a pair holding section of protrusion side by side up and down towards the end face of spring (7), and this can coordinate holding section and inserts in described upper recess (20) and lower concave part (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520097716.8U CN204489062U (en) | 2015-02-11 | 2015-02-11 | A kind of double-shaft eccentric catch gear and folding joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520097716.8U CN204489062U (en) | 2015-02-11 | 2015-02-11 | A kind of double-shaft eccentric catch gear and folding joint |
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| Publication Number | Publication Date |
|---|---|
| CN204489062U true CN204489062U (en) | 2015-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520097716.8U Active CN204489062U (en) | 2015-02-11 | 2015-02-11 | A kind of double-shaft eccentric catch gear and folding joint |
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| CN (1) | CN204489062U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022226712A1 (en) * | 2021-04-26 | 2022-11-03 | 王峰 | Folding connector |
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2015
- 2015-02-11 CN CN201520097716.8U patent/CN204489062U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022226712A1 (en) * | 2021-04-26 | 2022-11-03 | 王峰 | Folding connector |
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