CN210364211U - Self-locking mechanism and folding joint - Google Patents
Self-locking mechanism and folding joint Download PDFInfo
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- CN210364211U CN210364211U CN201921135548.1U CN201921135548U CN210364211U CN 210364211 U CN210364211 U CN 210364211U CN 201921135548 U CN201921135548 U CN 201921135548U CN 210364211 U CN210364211 U CN 210364211U
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Abstract
The utility model discloses a self-locking mechanism, include: a handle, one end of which is provided with a groove, and the inner wall of the groove is provided with a chute; the eccentric assembly is rotatably arranged in the groove, and a clamping groove is formed in the periphery of the eccentric assembly; the self-locking bolt is arranged in the sliding groove and can slide along the length direction of the sliding groove, the self-locking bolt comprises a locking block and an elastic piece, the locking block is abutted against the periphery of the eccentric assembly, and the elastic piece provides a force for pressing the locking block on the periphery of the eccentric assembly; the handle is rotated, the self-locking bolt rotates along with the handle, when the self-locking bolt rotates to the clamping groove, the locking block is pushed by the elastic piece to be inserted into the clamping groove, and the handle is locked. The utility model also discloses a folding joint, include self-locking mechanism, go up folding joint, fold down and connect and locking mechanism, locking mechanism is used for locking folding joint and fold down and connects. The utility model provides a self-locking mechanism and folding joint, locking is reliable, and the security is high.
Description
Technical Field
The utility model relates to a bicycle technical field, specifically speaking relates to a self-locking mechanism and folding joint.
Background
In the existing bicycle folder, in order to avoid locking failure caused by loosening of the handle, the rotation of the handle is limited by pressure in the rotation process of the handle. When locking intensity is higher, locking and unlocking locking all need to be realized energetically, and it is inconvenient to use, and when locking intensity was lower, locking was unreliable, and the handle may become flexible or even open under unexpected touching, and the scray can take place to become invalid, brings very big potential safety hazard for the personnel of riding.
Chinese patent with application number 200810037770.8 discloses a bicycle quick detach auto-lock handle, including the one end with the screw rod piece in the handle recess, set up the auto-lock stick between the two, set up the locking piece on the auto-lock stick, locking piece and screw rod piece lockhole phase-match, the opposite side of auto-lock stick is equipped with the spring, the other end setting of spring is downthehole with offering in the handle recess, the one end of auto-lock stick is equipped with the button, the other end is opened porosely, it has auto-lock stick location pinhole to open near the eccentric block on the handle, the auto-lock stick will be through the round pin with the notch swing joint of handle eccentric block, make the auto-lock stick at the round pin, automatic return under the effect of spring, pin the screw rod piece, the safety of bicycle. However, because the spring is exposed, the spring is easy to jump out and fail due to the entry of foreign matters. And when the spring is used for a long time or damaged to cause failure, the self-locking rod cannot be kept in the notch of the eccentric block, so that locking failure is caused, and certain potential safety hazard exists.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a self-locking mechanism and folding joint, locking is reliable, and the security is high.
The utility model discloses a technical scheme that self-locking mechanism adopted is:
a self-locking mechanism comprising: a handle, one end of which is provided with a groove, and the inner wall of the groove is provided with a chute; the eccentric assembly is rotatably arranged in the groove, and a clamping groove is formed in the periphery of the eccentric assembly; the self-locking bolt is arranged in the sliding groove and can slide along the length direction of the sliding groove, the self-locking bolt comprises a locking block and an elastic piece, the locking block is abutted against the periphery of the eccentric assembly, and the elastic piece provides a force for pressing the locking block on the periphery of the eccentric assembly; the handle is rotated, the self-locking bolt rotates along with the handle, when the self-locking bolt rotates to the clamping groove, the locking block is pushed by the elastic piece to be inserted into the clamping groove, and the handle is locked.
As a preferred scheme, a strip-shaped accommodating groove is formed in the middle of the locking block; the self-locking bolt further comprises a guide piece, one end of the guide piece is fixed to the sliding groove, the other end of the guide piece extends into the containing groove, and the guide piece and the containing groove are matched to guide the sliding direction of the locking block.
Preferably, the elastic member is disposed in the accommodating groove, one end of the elastic member abuts against the guide member, and the other end of the elastic member abuts against the inner wall of the accommodating groove.
Preferably, the two opposite sides of the inner wall of the accommodating groove are contracted to form a closed opening, and the other end of the elastic piece is abutted to the closed opening.
Preferably, the guide members are arranged at least two spaced apart groups.
Preferably, a strip-shaped window is formed in the inner wall of the sliding groove, and a shifting block part extending out of the window is formed by protruding the side wall of one side of the locking block.
Preferably, the other side wall opposite to the locking block protrudes to form a clamping block part matched with the clamping groove.
The utility model also discloses a folding joint, which comprises a self-locking mechanism, an upper folding joint, a lower folding joint and a locking mechanism, wherein the upper folding joint is movably hinged with the lower folding joint, and the locking mechanism is used for locking the upper folding joint and the lower folding joint; the self-locking mechanism comprises a handle, an eccentric component and a self-locking bolt, and the handle is hinged to the lower folding joint.
Preferably, the eccentric assembly includes: the pin shaft is transversely arranged on the groove of the handle and the lower folding joint in a penetrating manner; the eccentric block is arranged in the groove and is eccentrically arranged with the pin shaft; the positioning pin is connected with the eccentric block and the handle; the ratchet connecting rod comprises a ratchet part movably sleeved on the eccentric block and a connecting rod part connected with the ratchet part, and the clamping groove is formed in the periphery of the ratchet part; the handle is enabled to rotate around the pin shaft, the eccentric block rotates along with the pin shaft, and the center of the rotating eccentric block displaces to drive the ratchet part and the connecting rod part to displace.
Preferably, the locking mechanism is arranged at one end of the connecting rod part far away from the ratchet wheel part and comprises a V-shaped block; the end face of the V-shaped block is provided with a pair of clamping convex blocks which are protruded up and down side by side, the edge of the bottom of the upper folding joint is provided with an upper concave part, the edge of the top of the lower folding joint is provided with a lower concave part, and the clamping convex blocks can be inserted into the upper concave part and the lower concave part in a matched mode.
The utility model discloses a self-locking mechanism and folding beneficial effect who connects are: the elastic piece presses the locking block to the periphery of the eccentric assembly, the handle rotates to force the locking block arranged in the handle sliding groove to slide on the periphery of the eccentric assembly, when the locking block slides to the clamping groove, the locking block is pushed by the elastic piece to extend into the clamping groove from the locking block of the lock bolt, and at the moment, the handle cannot rotate reversely, so that locking is realized; during unlocking, the locking block is moved upwards by overcoming the elasticity of the elastic piece until the locking block is separated from the clamping groove, and then the handle is rotated reversely to complete unlocking;
because the elastic part of the locking block is positioned in the sliding groove, the working environment is relatively closed, external sundries are not easy to enter, and the reliability is better (newly added content). And after the locking block stretches into the clamping groove to complete the locking action, the rotation of the handle is limited by the mechanical clamping of the locking block and the clamping groove, at the moment, the elastic force of the elastic part is only used for pressing the locking block to prevent the locking block from being separated from the clamping groove, and the rotation of the handle is not directly limited, so that the locking of the handle is reliable, and the safety is good.
Drawings
Fig. 1 is a schematic structural view of the self-locking mechanism of the present invention.
Fig. 2 is an exploded view of the self-locking mechanism of the present invention.
Fig. 3 is a schematic structural diagram of the folding joint of the present invention.
Fig. 4 is an exploded view of the folding joint of the present invention.
Detailed Description
The invention will be further elucidated and described with reference to the following embodiments and drawings in which:
referring to fig. 1 and 2, a self-locking mechanism includes a handle 10, an eccentric assembly 20, and a self-locking bolt 30.
One end of the handle 10 is provided with a groove 11, and the inner wall of the groove 11 is provided with a sliding chute 12. One end of the sliding groove 12 is communicated with the groove 11, and the other end thereof extends for a preset length along the length direction of the handle 10.
The eccentric component 20 is rotatably arranged in the groove 11, and a clamping groove 21 is formed in the periphery 26 of the eccentric component 20.
Referring to fig. 2, the eccentric assembly 20 includes a pin 22, an eccentric block 23, a positioning pin 24, and a ratchet link 25. Wherein, the pin 22 transversely penetrates the groove 11 of the handle 10. The eccentric block 23 is arranged in the groove 11 and is penetrated by the pin 22, and the eccentric block 23 is arranged eccentrically to the pin 22. The positioning pin 24 connects the eccentric mass 23 with the handle 10. The ratchet link 25 includes a ratchet portion 251 movably sleeved on the eccentric block 23 and a link portion 252 connected to the ratchet portion 251, and the engaging groove 21 is formed on the periphery 26 of the ratchet portion 251.
The eccentric block 23 is circular, the inner wall of the ratchet part 251 is attached to the eccentric block 23, and when the eccentric block 23 rotates along with the handle 10, the ratchet part 251 does not rotate and only deviates. The thickness between the inner wall and the outer wall of the ratchet part 251 is gradually changed to the maximum thickness of the ratchet part 251 at the position where the clamping groove 21 is arranged, so that the depth of the clamping groove 21 is improved, and the matching reliability of the clamping groove 21 and the locking block 31 is further improved.
The self-locking bolt 30 is disposed in the sliding slot 12 and is slidable along the length direction of the sliding slot 12, the self-locking bolt 30 includes a locking block 31 and an elastic member 32, the locking block 31 abuts against the periphery 26 of the eccentric assembly 20, and the elastic member 32 provides a force for pressing the locking block 31 against the periphery 26 of the eccentric assembly 20. The elastic member 32 presses the locking block 31 against the periphery 26 of the eccentric assembly 20, the handle 10 rotates to force the locking block 31 in the chute 12 of the handle 10 to slide on the periphery 26 of the eccentric assembly 20, when the locking block 31 slides to the slot 21, the locking block 31 of the locking bolt 30 is pushed by the elastic member 32 to extend into the slot 21, and at this time, the handle 10 cannot rotate reversely, so that locking is achieved. When unlocking, the locking block 31 is moved upwards by overcoming the elasticity of the elastic piece 32 until the locking block is separated from the clamping groove 21, and then the handle 10 is rotated reversely to complete unlocking.
The self-locking bolt 30 further comprises a guide 33. The middle of the locking block 31 is provided with a strip-shaped receiving groove 311. One end of the guiding element 33 is fixed to the sliding groove 12, and the other end extends into the receiving groove 311, and the guiding element 33 cooperates with the receiving groove 311 to guide the sliding direction of the locking block 31. Wherein, two sets of guides 33 are arranged at least at intervals to guide the sliding of the locking block 31 and avoid the swinging during the sliding process. In this embodiment, the accommodating groove 311 is a through groove. The guiding element 33 is a screw, one end of the guiding element 33 is arranged outside the handle 10, and the other end thereof penetrates through the outer wall of one side of the sliding chute 12, continues to penetrate through the accommodating groove 311, and is fastened on the outer wall of the other side of the sliding chute 12.
The elastic member 32 is disposed in the receiving groove 311, and is preferably a spring. One end of the elastic member 32 abuts against the guide member 33, and the other end abuts against the inner wall of the accommodating groove 311. Preferably, the two opposite sides of the inner wall of the receiving groove 311 contract to form a closed end 312, one end of the elastic element 32 abuts against the set of guiding elements 33, and the other end of the elastic element 32 abuts against one side of the closed end 312. The other set of guiding elements 33 is disposed on the other side of the closing-in 312, and the distance between the two sets of guiding elements 33 is relatively long, so as to further avoid the swing of the locking block 31 during the sliding process.
A strip-shaped window 121 is formed in the inner wall of the sliding groove 12, a shifting block portion 311 extending out of the window 121 is formed by protruding the side wall of one side of the locking block 31, and the locking block 31 is lifted upwards by holding the shifting block portion 311 during unlocking. The bottom of the other side wall opposite to the locking block 31 protrudes to form a block part 312 matched with the slot 21, and locking is realized by the matching and abutting of the block part 312 and the slot 21. The catching block 312 reduces the overall material consumption of the locking block 31.
The utility model discloses a self-locking mechanism, elastic component 32 sticiss latch segment 31 in eccentric subassembly 20's periphery 26, and handle 10 rotates, forces latch segment 31 of locating in handle 10 spout 12 to slide on eccentric subassembly 20's periphery 26, and when sliding to draw-in groove 21, latch segment 31 stretches into draw-in groove 21 from latch segment 31 of bolt 30 under elastic component 32 promotes, and handle 10 can't the counter rotation at this moment, has realized locking; when unlocking, the locking block 31 is moved upwards by overcoming the elasticity of the elastic piece 32 until the locking block is separated from the clamping groove 21, and then the handle 10 is rotated reversely to complete unlocking.
Because the elastic part 32 of the locking block 31 is positioned in the chute 12, the working environment is relatively closed, external sundries are not easy to enter, and the reliability is higher. After the locking block 31 extends into the slot 21 to complete the locking action, the rotation of the handle 10 is limited by the mechanical engagement between the locking block 31 and the slot 21, and at this time, the elastic force of the elastic member 32 is only used for pressing the locking block 31 to prevent the locking block 31 from being separated from the slot 21, and the rotation of the handle 10 is not directly limited, so that the locking of the handle 10 is reliable and the safety is good.
Referring to fig. 3 and 4, the present invention further discloses a folding joint, which includes a self-locking mechanism 100, an upper folding joint 200, a lower folding joint 300 and a locking mechanism 400, wherein one side of the upper folding joint 200 is movably hinged to the side opposite to the lower folding joint 300, and the locking mechanism 400 is used for locking the other side of the upper folding joint 200 to the other side of the lower folding joint 300.
The self-locking mechanism 100 comprises a handle 10, an eccentric assembly 20 and a self-locking bolt 30, wherein the handle 10 is hinged to the lower folding joint 300.
Referring to fig. 2, the eccentric assembly 20 includes a pin 22, an eccentric block 23, a positioning pin 24, and a ratchet link 25. Wherein, the pin 22 transversely penetrates the groove 11 of the handle 10 and the lower folding joint 300. The eccentric block 23 is arranged in the groove 11 and is penetrated by the pin 22, and the eccentric block 23 is arranged eccentrically to the pin 22. The positioning pin 24 connects the eccentric mass 23 with the handle 10. The ratchet link 25 includes a ratchet portion 251 movably sleeved on the eccentric block 23 and a link portion 252 connected to the ratchet portion 251, and the engaging groove 21 is formed on the periphery 26 of the ratchet portion 251.
The eccentric block 23 is circular, the inner wall of the ratchet part 251 is attached to the eccentric block 23, and when the eccentric block 23 rotates along with the handle 10, the ratchet part 251 does not rotate and only deviates. The thickness between the inner wall and the outer wall of the ratchet part 251 is gradually changed to the maximum thickness of the ratchet part 251 at the position where the clamping groove 21 is arranged, so that the depth of the clamping groove 21 is improved, and the matching reliability of the clamping groove 21 and the locking block 31 is further improved.
Referring to fig. 3 and 4, the locking mechanism 400 is disposed at an end of the link portion 252 away from the ratchet portion 251 and includes a V-block 410. The end face of the V-block 410 is provided with a pair of locking protrusions 411 protruding up and down side by side, the bottom edge of the upper folding joint 200 is provided with an upper concave portion 210, the top edge of the lower folding joint 300 is provided with a lower concave portion 310, and the locking protrusions 411 can be inserted into the upper concave portion 210 and the lower concave portion 310 in a matching manner.
Referring to fig. 2, 3 and 4, when the handle 10 rotates around the pin 22, the positioning pin 24 and the eccentric block 23 connected to the positioning pin 24 rotate, and the eccentric block 23 is eccentrically disposed with respect to the pin 22, the center of the eccentric block 23 displaces during rotation, so that the ratchet portion 251, the link portion 252 connected to the ratchet portion 251, and the V-block 410 disposed outside the eccentric block displace. When the V-block 410 moves toward the side of the lower folding joint 300 near the upper folding joint 200, the locking protrusion 411 is inserted into the upper concave portion 210 and the lower concave portion 310, and the upper folding joint 200 and the lower folding joint 300 are locked by the locking. When the V-block 410 moves away from the upper folding joint 200 and the lower folding joint 300, the locking protrusion 411 is separated from the upper concave portion 210 and the lower concave portion 310, and the upper folding joint 200 and the lower folding joint 300 can rotate relative to the pin 22.
It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention, and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. A self-locking mechanism, comprising:
a handle, one end of which is provided with a groove, and the inner wall of the groove is provided with a chute;
the eccentric assembly is rotatably arranged in the groove, and a clamping groove is formed in the periphery of the eccentric assembly; and
the self-locking bolt is arranged in the sliding groove and can slide along the length direction of the sliding groove, the self-locking bolt comprises a locking block and an elastic piece, the locking block is abutted against the periphery of the eccentric assembly, and the elastic piece provides a force for pressing the locking block on the periphery of the eccentric assembly;
the handle is rotated, the self-locking bolt rotates along with the handle, when the self-locking bolt rotates to the clamping groove, the locking block is pushed by the elastic piece to be inserted into the clamping groove, and the handle is locked.
2. The self-locking mechanism of claim 1, wherein a strip-shaped receiving groove is formed in the middle of the locking block;
the self-locking bolt further comprises a guide piece, one end of the guide piece is fixed to the sliding groove, the other end of the guide piece extends into the containing groove, and the guide piece and the containing groove are matched to guide the sliding direction of the locking block.
3. The self-locking mechanism of claim 2, wherein the elastic member is disposed in the receiving groove, one end of the elastic member abuts against the guide member, and the other end abuts against an inner wall of the receiving groove.
4. The self-locking mechanism of claim 3, wherein the middle portions of the two opposite sides of the inner wall of the receiving groove are contracted to form a closed opening, and the other end of the elastic member abuts against the closed opening.
5. The self-locking mechanism of any one of claims 2 to 4, wherein the guides are spaced apart in at least two sets.
6. The self-locking mechanism of claim 5, wherein the inner wall of the sliding groove is provided with a strip-shaped window, and the side wall of one side of the locking block protrudes to form a shifting block part extending out of the window.
7. The self-locking mechanism of claim 6, wherein the other side wall of the locking block opposite to the locking block protrudes to form a block part which is matched with the clamping groove.
8. A folding joint, characterized by comprising the self-locking mechanism of any one of claims 1 to 7, an upper folding joint, a lower folding joint, and a locking mechanism, wherein the upper folding joint is movably hinged with the lower folding joint, and the locking mechanism is used for locking the upper folding joint and the lower folding joint;
the self-locking mechanism comprises a handle, an eccentric component and a self-locking bolt, and the handle is hinged to the lower folding joint.
9. A folding joint as claimed in claim 8, wherein said eccentric assembly comprises:
the pin shaft is transversely arranged on the groove of the handle and the lower folding joint in a penetrating manner;
the eccentric block is arranged in the groove and is eccentrically arranged with the pin shaft;
the positioning pin is connected with the eccentric block and the handle; and
the ratchet connecting rod comprises a ratchet part movably sleeved on the eccentric block and a connecting rod part connected with the ratchet part, and the clamping groove is formed in the periphery of the ratchet part;
the handle is enabled to rotate around the pin shaft, the eccentric block rotates along with the pin shaft, and the center of the rotating eccentric block displaces to drive the ratchet part and the connecting rod part to displace.
10. The folding joint of claim 9 wherein said locking mechanism is disposed at an end of said link portion remote from said ratchet portion and includes a V-shaped block;
the end face of the V-shaped block is provided with a pair of clamping convex blocks which are protruded up and down side by side, the edge of the bottom of the upper folding joint is provided with an upper concave part, the edge of the top of the lower folding joint is provided with a lower concave part, and the clamping convex blocks can be inserted into the upper concave part and the lower concave part in a matched mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921135548.1U CN210364211U (en) | 2019-07-19 | 2019-07-19 | Self-locking mechanism and folding joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921135548.1U CN210364211U (en) | 2019-07-19 | 2019-07-19 | Self-locking mechanism and folding joint |
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| Publication Number | Publication Date |
|---|---|
| CN210364211U true CN210364211U (en) | 2020-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921135548.1U Active CN210364211U (en) | 2019-07-19 | 2019-07-19 | Self-locking mechanism and folding joint |
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| Country | Link |
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| CN (1) | CN210364211U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110254583A (en) * | 2019-07-19 | 2019-09-20 | 深圳市志宏金属制品有限公司 | Self-locking mechanism and folding joint |
-
2019
- 2019-07-19 CN CN201921135548.1U patent/CN210364211U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110254583A (en) * | 2019-07-19 | 2019-09-20 | 深圳市志宏金属制品有限公司 | Self-locking mechanism and folding joint |
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