Anti-blocking mechanism and locking device

Abstract

The present invention provides an anti-jamming mechanism and a locking device, the anti-jamming mechanism comprises a first elastic device, a second elastic device, a guide rod and a guide sleeve, one end of the guide rod is connected to the guide sleeve, the axis of the guide rod is parallel to the axis of the guide sleeve, the first elastic device is arranged in the guide sleeve, the guide sleeve is provided with at least one travel hole, and the second elastic device is sleeved on the guide rod; the locking device comprises a shell structure, a lock hook, a lock head, a drive mechanism, a spring structure, a switch assembly, a rack and a control assembly; a pull-back device is arranged in the shell structure, and the drive mechanism and the switch assembly are connected to the control assembly. The anti-jamming mechanism and the locking device described in the present invention solve the problem that the locking device in the prior art is prone to jamming, if jamming occurs, it will cause the motor resistance to increase and cause greater wear of the transmission mechanism, and long-term jamming will cause the motor to heat up and be damaged.

Description

Technical Field

[0001] The invention belongs to the technical field of locks, and in particular relates to an anti-rotation blocking mechanism and a collision locking device. Background Art

[0002] As shared electric bicycles become more and more popular, the need for anti-theft of various body accessories has also arisen. In the prior art, the lock head and lock hook of the latch device need to be correspondingly set with a signal switch for detection, so two sets of mechanisms are usually required to be set inside the latch device to work, which leads to a relatively complex internal structure of the latch device, and high manufacturing and assembly costs. In addition, the latch device in the prior art is prone to stalling. If stalling occurs, the motor resistance will increase and the transmission mechanism will be greatly worn. Long-term stalling will cause the motor to heat up and be damaged. Summary of the invention

[0003] In view of this, the present invention aims to propose an anti-jamming mechanism and a locking device, which solves the problem that the locking device in the prior art is prone to jamming. If jamming occurs, the motor resistance will increase and the transmission mechanism will be greatly worn. In addition, long-term jamming will cause the motor to heat up and be damaged.

[0004] The invention further solves the technical problems in the prior art that the internal structure of the latch device is relatively complex and the manufacturing and assembly costs are relatively high.

[0005] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0006] An anti-rotation blocking mechanism comprises a first elastic device, a second elastic device, a guide rod and a guide sleeve;

[0007] One end of the guide rod is connected to the guide sleeve, the axis of the guide rod is parallel to the axis of the guide sleeve, the first elastic device is arranged in the guide sleeve, at least one travel hole is provided on the guide sleeve, and the second elastic device is sleeved on the guide rod.

[0008] Furthermore, the first elastic device and the second elastic device are both springs.

[0009] Furthermore, the guide rod is integrally connected to the guide sleeve.

[0010] Furthermore, the elastic coefficients of the first elastic device and the second elastic device are both greater than or equal to 45kg / mm 2 .

[0011] A latching device comprises a housing structure, a lock hook, a lock head, a driving mechanism, a spring structure, a switch assembly, a rack, a control assembly and the above-mentioned anti-jamming mechanism;

[0012] The lock hook and the lock head are both rotatably arranged inside the housing structure, one end of the lock hook is provided with a hook head capable of hooking the lock head, the other end of the lock hook is arranged in the travel hole, the first elastic device abuts against the lock hook, the second elastic device abuts against the inside of the housing structure, the guide sleeve is connected to the drive mechanism through the rack, a pull-back device for controlling the counterclockwise rotation of the lock head is provided in the housing structure, one end of the spring structure is rotatably connected to the lock hook, the other end of the spring structure abuts against the switch assembly, and the drive mechanism and the switch assembly are both connected to the control assembly;

[0013] When the lock hook is hooked with the lock head, the switch assembly is in an open circuit state, and when the lock hook is separated from the lock head, the switch assembly is in a closed circuit state;

[0014] The housing structure is provided with an opening slot through which a lock rod can pass. When the lock rod is inserted into the opening slot, the lock head can be moved to rotate.

[0015] Furthermore, the spring structure includes a spring and a spring fixing block, one end of the spring fixing block is rotatably connected to the lock hook, the connection position of the spring fixing block and the lock hook is located on the opposite side of the hook head of the lock hook, one end of the spring is embedded in the spring fixing block, and the other end of the spring is against the switch assembly, a step is provided on the cam position of the lock head, and a groove that can cooperate with the step is provided on the spring fixing block.

[0016] Furthermore, a rebound device for resetting the spring piece is provided on the spring piece fixing block.

[0017] Furthermore, the rebound device includes a return spring and a rebound positioning rod, the rebound positioning rod is arranged in the shell structure, one end of the return spring is against the rebound positioning rod, and the other end of the return spring is arranged on the spring fixing block.

[0018] Furthermore, the pull-back device includes a reset torsion spring and a pull-back positioning rod, the pull-back positioning rod is arranged in the shell structure, one end of the reset torsion spring abuts against the pull-back positioning rod, and the other end of the reset torsion spring abuts against the inner side of the lock head.

[0019] Furthermore, the driving mechanism includes a motor, a worm and a gear assembly, the worm is arranged at the output end of the motor, and the worm is connected to the rack through the gear assembly.

[0020] Compared with the prior art, the anti-jamming mechanism and the locking device described in the present invention have the following advantages:

[0021] The present invention discloses an anti-jamming mechanism and a latching device, wherein an anti-jamming mechanism is arranged inside the device, and the anti-jamming mechanism can effectively prevent the problem of bidirectional jamming, and can effectively solve the technical problem of motor jamming damage caused by excessive load; the device forms a linkage between the lock hook, the lock head and the control component through a spring structure, thereby ensuring that the internal structure of the device is compact while further streamlining the internal structure of the latch, and can accurately give the unlocking state and the locking state; the device has a built-in control component to collect the unlocking state and the locking state and can directly drive the motor to realize forward and reverse switching. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 A schematic diagram of the internal structure of a latch device according to an embodiment of the present invention;

[0024] Figure 2 A schematic diagram of the structure of the latch device from another angle according to an embodiment of the present invention;

[0025] Figure 3 An exploded view of a latch device according to an embodiment of the present invention;

[0026] Figure 4 It is a schematic diagram of the combined structure of a spring structure, a lock head, a lock hook and a switch assembly in a latch device according to an embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of a combined structure of an anti-rotation blocking mechanism and a locking hook according to an embodiment of the present invention;

[0028] Figure 6 This is a schematic diagram of the connection between a control component, a motor and a switch component of a latch device according to an embodiment of the present invention;

[0029] Figure 7 A structural schematic diagram of a lock head and a lock hook of a latch device according to an embodiment of the present invention in a locked state;

[0030] Figure 8 A structural schematic diagram of a lock head and a lock hook of a latch device according to an embodiment of the present invention in an unlocked state;

[0031] Fig. 9 The present invention is a schematic diagram of the travel positions of a lock head and a lock hook of a latch device according to an embodiment of the present invention in a locked state and an unlocked state.

[0032] Description of reference numerals:

[0033] 101. Metal bottom shell; 102. Lock head; 103. Reset torsion spring; 104. First fixing column; 105. Shrapnel; 106. Position switch; 107. Switch circuit board; 108. Intermediate gear; 109. Plastic upper shell; 110. Lock hook; 111. Second fixing column; 112. End gear; 113. Shrapnel fixing block; 114. Anti-jamming mechanism; 115. Motor; 116. Primary gear; 117. Worm; 118. Drive circuit board; 201. First fixing pin; 202. Second fixing pin; 203. Third fixing pin; 301. First elastic device; 302. Second elastic device; 401. Lock rod. DETAILED DESCRIPTION

[0034] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0037] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0038] An anti-blocking mechanism, such as Figure 5 As shown, it includes a first elastic device 301, a second elastic device 302, a guide rod and a guide sleeve;

[0039] One end of the guide rod is connected to the guide sleeve, and the axis line of the guide rod coincides with the axis line of the guide sleeve. The first elastic device 301 is arranged in the guide sleeve. The guide sleeve is provided with two travel holes, and the two travel holes are symmetrically arranged on the guide sleeve up and down. The second elastic device 302 is sleeved on the guide rod. In this embodiment, the first elastic device 301 and the second elastic device 302 are both springs, and the guide rod is integrally connected to the guide sleeve.

[0040] The elastic coefficients of the first elastic device 301 and the second elastic device 302 are both equal to 45kg / mm2. The second elastic device 302 is a stainless steel compression spring with a pitch of 2.0mm and an axial length of 15-17mm. In this embodiment, the axial length of the second elastic device 302 is 16mm. The first elastic device 301 is a stainless steel compression spring with a pitch of 1.8 and an axial length of 14-16mm. In this embodiment, the axial length of the first elastic device 301 is 15mm. The anti-blocking mechanism can effectively prevent the problem of bidirectional blocking, and can effectively solve the technical problem of motor blocking damage caused by excessive load.

[0041] A latching device, such as Figure 1 As shown, it includes a housing structure, a lock hook 110, a lock head 102, a drive mechanism, a spring structure, a switch assembly, a rack, a control assembly and the above-mentioned anti-blocking mechanism;

[0042] The lock hook 110 and the lock head 102 are both rotatably arranged inside the shell structure, one end of the lock hook 110 is provided with a hook head that can hook the lock head 102, and the other end of the lock hook 110 is arranged in the travel hole, the first elastic device 301 abuts against the lock hook 110, and the second elastic device 302 abuts against the inside of the shell structure, a support rod is provided in the shell structure, and a guide hole that can cooperate with the support rod is provided on the guide rod, the guide sleeve is connected to the driving mechanism through a rack, and the guide sleeve is connected to the rack as a whole, and a pull-back device for controlling the counterclockwise rotation of the lock head 102 is provided in the shell structure. In this embodiment, the pull-back device includes a reset torsion spring 103 and a pull-back positioning rod, and the pull-back positioning rod is arranged in the shell structure, one end of the reset torsion spring 103 abuts against the pull-back positioning rod, and the other end of the reset torsion spring 103 abuts against the inner side of the lock head 102, one end of the spring sheet structure is rotatably connected to the lock hook 110, and the other end of the spring sheet structure abuts on the switch assembly, and the driving mechanism and the switch assembly are both connected to the control assembly;

[0043] The housing structure includes a metal bottom shell 101 and a plastic upper shell 109, and the metal bottom shell 101 and the plastic upper shell 109 are connected by bolts;

[0044] When the lock hook 110 is hooked with the lock head 102, the switch assembly is in an open circuit state, and when the lock hook 110 is separated from the lock head 102, the switch assembly is in a closed circuit state;

[0045] like Figure 7As shown, the housing structure is provided with an opening slot through which the lock rod 401 can pass. When the lock rod 401 extends into the opening slot, the lock head 102 can be moved to rotate.

[0046] like Figure 4 As shown, the spring sheet structure includes a spring sheet 105 and a spring sheet fixing block 113, one end of the spring sheet fixing block 113 is rotatably connected to the lock hook 110, the connection position of the spring sheet fixing block 113 and the lock hook 110 is located on the opposite side of the hook head of the lock hook 110, one end of the spring sheet 105 is embedded in the spring sheet fixing block 113, and the other end of the spring sheet 105 is against the switch assembly, a step is provided on the cam position of the lock head 102, and a groove that can cooperate with the step is provided on the spring sheet fixing block 113. The device forms a linkage between the lock hook 110, the lock head 102 and the control assembly through the spring sheet structure, thereby ensuring that the internal structure of the device is compact while further simplifying the internal structure of the touch lock, and can accurately give the unlocking state and the locking state.

[0047] like Figure 4 As shown, a rebound device for resetting the spring 105 is provided on the spring fixing block 113, and the rebound device includes a return spring and a rebound positioning rod. The rebound positioning rod is arranged in the shell structure, one end of the return spring is against the rebound positioning rod, and the other end of the return spring is arranged on the spring fixing block 113.

[0048] The driving mechanism includes a motor 115, a worm 117 and a gear assembly. The worm 117 is arranged at the output end of the motor 115, and the worm 117 is connected to the rack through the gear assembly.

[0049] The gear assembly includes a primary gear 116, an intermediate gear 108 and a final gear 112, the primary gear 116 meshes with the final gear 112 through the intermediate gear 108, the primary gear 116 meshes with the worm 117, and the final gear 112 meshes with the rack;

[0050] The switch assembly includes a position switch 106 and a switch circuit board 107, and the position switch 106 is electrically connected to the switch circuit board 107;

[0051] The control component includes a driving circuit board 118 and a central control system. The driving circuit board 118 is connected to the central control system by wire. In this embodiment, the central control system is an Internet of Things intelligent control module.

[0052] How this example works

[0053] like Figure 1 , Figure 2As shown, a motor 115 is built into the shell structure. When electrically driven, the motor 115 rotates, driving the coaxial worm 117 to rotate. After three-stage speed reduction through the first gear 116, the intermediate gear 108, and the final gear 112, it acts on the anti-jamming mechanism 114 through the rack, thereby driving the lock hook 110 to move; if it is in the locked state, the anti-jamming mechanism 114 will drive the upper end of the lock hook 110 to move to the right when it moves to the left, thereby releasing the lock head 102. Under the action of the reset torsion spring 103, the lock head 102 rotates counterclockwise to the reset state, and the state is unlocked at this time; when the anti-jamming mechanism 114 moves to the right for a period of time, the motor 115 will automatically rotate in the opposite direction, and after three-stage speed reduction through the first gear 116, the intermediate gear 108, and the final gear 112, it acts on the anti-jamming mechanism 114 to move to the right for reset.

[0054] like Figure 2 An open groove is provided on the metal bottom shell 101 and the plastic upper shell 109, which allows other lock rods 401 to enter and contact the lock head 102 first. The lock rod 401 presses the lock head 102 downward, causing the lock head 102 to rotate clockwise; when the lock head 102 rotates a certain angle and contacts the lock hook 110 and under the force of the lock rod 401, the lock head 102 continues to rotate clockwise, causing the lock head 110 to rotate clockwise. When the lock head 102 continues to rotate beyond the hook position set above the lock hook 110, the lock hook 110 rotates counterclockwise under the action of the first elastic device 301 to reset and hook the lock head 102. At this time, the state is locked.

[0055] like Figure 5 As shown, when the end gear 112 rotates clockwise, the anti-jamming mechanism 114 will move to the left through gear meshing and compress the second elastic device 302. When it rotates to the right end of the rack of the anti-jamming mechanism 114, the end gear 112 continues to rotate. Under the action of the second elastic device 302, the rack no longer moves to the left, but jumps left and right according to the rhythm of the end gear 112. This setting can effectively avoid the occurrence of jamming when the end gear 112 rotates to the limit; similarly, when the end gear 112 rotates counterclockwise , the anti-jamming mechanism 114 will move to the right through gear meshing. When the lock hook 110 moves to the limit position, it will no longer move. At this time, the first elastic device 301 starts to work. When the final gear 112 continues to rotate and drives the anti-jamming mechanism 114 to continue to move to the right, the first elastic device 301 will be acted. At this time, the lock hook 110 will no longer move, but the anti-jamming mechanism 114 will jump left and right according to the rhythm of the final gear 112. This setting can effectively prevent the final gear 112 from being jammed when it rotates counterclockwise to the limit.

[0056] like Figure 6As shown, the switch circuit board 107 is connected to the drive circuit board 118 by wire, the motor 115 is connected to the drive circuit board 118 by wire, and the drive circuit board 118 is connected to the central control system by wire;

[0057] like Figure 2 As shown, the lock head 102 is loosely fitted on the metal bottom shell 101 through the reset torsion spring 103 and the first fixed column 104, and the lock head 102 can rotate around the first fixed column 104 on the metal bottom shell 101. The illustrated position is the position where the lock head 102 and the lock hook 110 are locked. The lock hook 110 is loosely fitted on the metal bottom shell 101 through the second fixed column 111, and the lock hook 110 can rotate around the first fixed column 104 on the metal bottom shell 101. The illustrated position is the locked position and also the starting position of the lock hook 110. The lock hook 110 can rotate clockwise, so that the lock head 102 rotates counterclockwise under the action of the reset torsion spring 103 to return to the initial position of the lock head 102, and the lock is opened.

[0058] like Figure 4 As shown, the state shown is the locked state. At this time, the spring piece 105 and the position switch 106 are only in contact and no pressing force occurs. The position switch 106 is in an open circuit state. The spring piece 105 is embedded in the spring piece fixing block 113. In the position shown in the figure, the spring piece fixing block 113 is in the initial position. When the lock head 102 is unlocked, it will rotate counterclockwise. At this time, the cam set at the lower end of the lock head 102 will push against the spring piece fixing block 113 to move the spring piece fixing block 113 downward, causing the left end of the spring piece 105 to move downward and press the position switch 106. Then, the position switch 106 is in a pass state, and the pressing signal is transmitted to the drive circuit board 118 through the wire. The drive circuit board 118 is provided with an MCU. After the signal is compiled, the pressing signal is transmitted to the central control system through the lead.

[0059] When unlocking is required, after the central control system receives the unlocking command, it compiles it into a signal and transmits it to the drive circuit board 118 through the lead and drives the motor 115 to rotate. The worm 117 rotates to drive the first-stage gear 116, the intermediate gear 108, and the final gear 112 to transmit, and finally drives the anti-jamming mechanism 114 to slide to the left, and then drives the lock hook 110 to rotate clockwise.

[0060] When the lock hook 110 rotates clockwise, it will drive the spring piece fixing block 113 to slide to the left. A step is provided at the contact position between the spring piece fixing block 113 and the lock head 102. When the spring piece fixing block 112 slides to the right, the step of the lock head 102 will cause the spring piece fixing piece 112 to move downward, thereby driving the spring piece 105 to move downward and press the position switch 106. The lock hook 110 rotates clockwise until the lock head 102 is released. Under the action of the reset torsion spring 103, the lock head 102 rotates counterclockwise to reset, and the lock is successfully unlocked. At this time, the position switch 106 is always in a closed state.

[0061] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A latching device, characterized in that: It comprises a housing structure, a lock hook (110), a lock head (102), a driving mechanism, a spring structure, a switch assembly, a rack, a control assembly and an anti-blocking mechanism; The anti-rotation blocking mechanism comprises a first elastic device (301), a second elastic device (302), a guide rod and a guide sleeve; One end of the guide rod is connected to the guide sleeve, the axis of the guide rod is parallel to the axis of the guide sleeve, the first elastic device (301) is arranged in the guide sleeve, the guide sleeve is provided with at least one travel hole, and the second elastic device (302) is sleeved on the guide rod; The first elastic device (301) and the second elastic device (302) are both springs; The guide rod is integrally connected to the guide sleeve; The elastic coefficients of the first elastic device (301) and the second elastic device (302) are both greater than or equal to 45 kg / mm 2 ; The lock hook (110) and the lock head (102) are both rotatably arranged inside the housing structure, one end of the lock hook (110) is provided with a hook head capable of hooking the lock head (102), and the other end of the lock hook (110) is arranged in the travel hole, the first elastic device (301) abuts against the lock hook (110), and the second elastic device (302) abuts against the inside of the housing structure, the guide sleeve is connected to the drive mechanism through the rack, and a pull-back device for controlling the lock head (102) to rotate counterclockwise is provided in the housing structure, one end of the spring structure is rotatably connected to the lock hook (110), and the other end of the spring structure abuts against the switch assembly, and the drive mechanism and the switch assembly are both connected to the control assembly; When the lock hook (110) is hooked with the lock head (102), the switch assembly is in an open circuit state; when the lock hook (110) is separated from the lock head (102), the switch assembly is in a closed circuit state; The housing structure is provided with an opening slot through which a locking rod (401) can pass, and when the locking rod (401) is inserted into the opening slot, the locking head (102) can be moved to rotate; The driving mechanism comprises a motor (115), a worm (117) and a gear assembly, wherein the worm (117) is arranged at the output end of the motor (115), and the worm (117) is connected to the rack through the gear assembly; The gear assembly comprises a primary gear (116), an intermediate gear (108) and a final gear (112), wherein the primary gear (116) is meshed with the final gear (112) via the intermediate gear (108), the primary gear (116) is meshed with the worm (117), and the final gear (112) is meshed with the rack; When the final gear (112) rotates clockwise, the anti-jamming mechanism moves to the left through gear meshing and compresses the second elastic device (302). When the rack of the anti-jamming mechanism rotates to the right end, the final gear (112) continues to rotate. Under the action of the second elastic device (302), the rack no longer moves to the left, but jumps left and right according to the rhythm of the final gear (112). This setting can prevent the final gear (112) from being jammed when it rotates to the limit. Similarly, when the final gear (112) rotates counterclockwise, The anti-jamming mechanism will move to the right through gear meshing. When the lock hook (110) moves to the limit position, it will no longer move. At this time, the first elastic device (301) starts to work. When the end gear (112) continues to rotate and drives the anti-jamming mechanism to continue to move to the right, the first elastic device (301) will work. At this time, the lock hook (110) will no longer move, but the anti-jamming mechanism will jump left and right according to the rhythm of the end gear (112). This setting can prevent the end gear (112) from being jammed when it rotates counterclockwise to the limit. The spring sheet structure comprises a spring sheet (105) and a spring sheet fixing block (113); one end of the spring sheet fixing block (113) is rotatably connected to the lock hook (110); the connection position between the spring sheet fixing block (113) and the lock hook (110) is located on the opposite side of the hook head of the lock hook (110); one end of the spring sheet (105) is embedded in the spring sheet fixing block (113); the other end of the spring sheet (105) is against the switch assembly; a step is provided at the cam position of the lock head (102); and a groove capable of cooperating with the step is provided on the spring sheet fixing block (113).

2. A latch device according to claim 1, characterized in that: The spring piece fixing block (113) is provided with a rebound device for resetting the spring piece (105).

3. A latch device according to claim 2, characterized in that: The rebound device comprises a return spring and a rebound positioning rod, wherein the rebound positioning rod is arranged in the housing structure, one end of the return spring abuts against the rebound positioning rod, and the other end of the return spring is arranged on the spring sheet fixing block (113).

4. A latch device according to any one of claims 1 to 3, characterized in that: The pull-back device comprises a return torsion spring (103) and a return torsion positioning rod, wherein the return torsion positioning rod is arranged in the housing structure, one end of the return torsion spring (103) abuts against the return torsion positioning rod, and the other end of the return torsion spring (103) abuts against the inner side of the lock head (102).

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