Transmission device and electronic lock

Abstract

The invention provides a transmission device and an electronic lock. The transmission device at least comprises a spring bolt, a transmission rod and a connecting piece. The spring bolt and the transmission rod are detachably connected, the transmission rod drives the spring bolt to move, and the connecting piece is arranged between the spring bolt and the transmission rod. Wherein the spring bolt penetrates through the connecting piece and moves relative to the connecting piece; and the connecting piece and the transmission rod are in meshing transmission. According to the electronic lock, the transmission device is adopted, in the transmission process, front-back transmission of force transmitted to the spring bolt by the transmission rod is kept constant, and the transmission mechanism and the triggering position of the signal switch are consistent.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic locks, and in particular to a transmission device and an electronic lock. Background Art

[0002] With the development of science and technology, electronic locks have gradually become popular in people's lives. In the existing field of electronic lock technology, the forward and reverse rotation of the motor is generally used to drive the extension and retraction of the lock tongue to achieve the opening and closing of doors, windows, cabinets, and charging guns. For example: When the charging gun is in use, when the electric car needs to be charged, the charging gun needs to be locked. Therefore, it is necessary to lock the charging gun of the new energy electric vehicle so that it cannot be plugged in and out at will to cause unexpected risks, and the transmission mechanism and the trigger position of the signal switch must be consistent.

[0003] However, the national standard for the new energy charging device industry requires standard conditions for the force of the lock tongue extending and retracting in the order of opening and closing the electronic lock. For example, when the lock tongue is extended, a force of 50N is required; when the lock tongue is retracted, an equivalent force of 50N must be required. However, the existing electronic locks are not designed in this way for the force of the lock tongue extending and retracting. The existing electronic locks can control the force during the process of extending the lock tongue, but when the lock tongue of the electronic lock is retracted, it often relies on the instantaneous rebound force of the spring, or the instantaneous reversing force of the motor, which often causes the force of the lock tongue extending to be much greater than the force of the lock tongue retracting, causing many electronic locks to fail to meet actual usage needs or some industry standards. Summary of the invention

[0004] In view of the deficiencies in the above-mentioned prior art, the present invention provides a transmission device, comprising: a lock tongue, a transmission rod and a connecting piece; the lock tongue and the transmission rod are detachably connected, and the transmission rod drives the lock tongue to move; the connecting piece is arranged between the lock tongue and the transmission rod; wherein the lock tongue passes through the connecting piece and moves relative to the connecting piece; meshing transmission occurs between the connecting piece and the transmission rod, so that the force transmitted to the lock tongue by the transmission rod remains constant, while the transmission mechanism and the trigger position of the signal switch are consistent.

[0005] Specifically, the connecting piece includes: A front wall, a surface of which is provided with a first through hole; A rear wall, which is arranged opposite to the front wall, and has a second through hole on its surface, wherein the first through hole and the second through hole are located opposite to each other; left wall; a right wall, which is arranged opposite to the left wall; The front wall, the rear wall, the left wall and the right wall are connected in sequence to form a hollow area; The locking tongue passes through the first through hole and moves relative to the connecting member; the transmission rod passes through the second through hole and moves relative to the connecting member.

[0006] Specifically, the diameter of the first through hole matches the shape of the cross section of the locking tongue, so that the locking tongue passes through the first through hole and can slide relative to the first through hole.

[0007] Specifically, a limiting protrusion is provided on the outer surface of the transmission rod; a groove is provided on the circumferential surface of the second through hole; the protrusion and the groove are meshed with each other, so that meshing transmission occurs between the connecting member and the transmission rod.

[0008] Specifically, the front wall is provided with a mounting groove, and the mounting groove is arranged on a side of the first through hole close to the hollow area.

[0009] Specifically, the left wall includes an inner wall surface of the left wall, which is a side of the left wall close to the hollow area; The outer wall surface of the left wall is arranged opposite to the inner wall surface of the left wall; the outer wall surface of the left wall is a non-planar surface.

[0010] Specifically, the right wall includes: an inner wall surface of the right wall, which is the side of the right wall close to the hollow area; an outer wall surface of the right wall, which is arranged opposite to the inner wall surface of the right wall; and the outer wall surface of the right wall is a non-planar surface.

[0011] Specifically, the outer wall surface of the right wall is further provided with: an abutment surface, which protrudes outwardly from the outer wall surface of the right wall; wherein the outer wall surface of the right wall and the abutment surface form a clamping area.

[0012] The present invention also provides an electronic lock, comprising: the transmission device described above; a motor; a reduction gear set connected to the output shaft of the motor; the reduction gear set connected to the transmission rod to drive the transmission rod to move; a circuit assembly electrically connected to the motor; a first switch and a second switch, the second switch and the first switch are both electrically connected to the circuit assembly; the positions of the first switch and the second switch are both set on the outer wall surface of the left wall; wherein the outer wall surface of the left wall includes a second switch area and a first switch area, the first switch area is used to control the opening and closing of the first switch; the second switch area is used to control the opening and closing of the second switch; and also includes a shell, the transmission device, the reduction gear set, the circuit assembly, the first switch and the second switch are all installed in the shell.

[0013] Specifically, the electronic lock also includes a manual unlocking component, a part of which extends out of the shell, and the other part is accommodated in the shell; the manual unlocking component includes a bite piece and a manual unlocking body, the bite piece is accommodated in the shell, and a part of the manual unlocking body extends out of the shell; the bite piece and the engaging area correspond in position, and the bite piece is engaged with the engaging area. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their description are used to explain the present invention and do not constitute an improper limitation of the present invention. Some specific embodiments of the present invention will be described in detail in an exemplary and non-restrictive manner with reference to the drawings. The same reference numerals in the drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale, among which: Figure 1 is a schematic diagram of the structure of the electronic lock 001 provided by the present invention, Figure 2 is a schematic diagram of the disassembled structure of the electronic lock 001 provided by the present invention, Figure 3 A schematic structural diagram of the first perspective of the connector 015 provided in this application; Figure 4 It is a structural schematic diagram of the second perspective of the connecting member 015 provided in this application. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0017] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0018] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0019] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0020] See also Figure 1 , Figure 1 It is a structural schematic diagram of the electronic lock 001 provided by the present invention. The electronic lock 001 includes a shell 02. The shell 02 includes an upper shell 021 and a lower shell 023. The upper shell 021 and the lower shell 023 are detachably connected. The two are positioned relative to each other and together form a shell space for accommodating components.

[0021] It should be noted that the connection between the upper shell 021 and the lower shell 023 can be rivet connection, interference fit connection, screw connection, bolt connection, etc. In this application, the selected connection method is screw connection. Screw holes are set in the upper shell 021 and the lower shell 023, and external screws are passed through the screw holes to connect and assemble the upper shell 021 and the lower shell 023.

[0022] See also Figure 2 , Figure 2It is a schematic diagram of the disassembled structure of the electronic lock 001 provided by the present invention, and the electronic lock 001 includes: a motor 03, a reduction gear set 05, a transmission device 01, and a circuit assembly 07; all of the above components are installed inside the housing 02. The motor 03, the reduction gear set 05 and the transmission device 01 form a complete transmission chain, wherein the motor 03 includes an output shaft 031, and the output shaft is connected to the reduction gear set 05 to transmit the power output by the motor 03 to the transmission device 01. The reduction gear set 05 includes at least one gear, which plays a role of deceleration and buffering in the transmission process. The reduction gear set 05 is connected to the transmission device 01 to drive the transmission device 01 to move.

[0023] It should be noted that the reduction gear set 05 is understood in an appropriately expanded manner in the present application. For example, the worm gear structure can also be understood as a presentation method of the reduction gear set 05.

[0024] The circuit assembly 07 includes a circuit board 071 and a wire (not shown in the figure). Since the present application is an electronic lock structure, the circuit board 071 includes electronic components to achieve interaction with an external signal sending device, and then control the opening and closing of the electronic lock. The wire electrically connects the electronic components in the electronic lock 001. For example: in the present application, the electronic components in the circuit board 071 are connected by wires to control the start and stop of the motor 03. The electronic lock 001 in the present application also includes a first switch 08 and a second switch 09; wherein the second switch 09 and the first switch 08 are both electrically connected to the circuit assembly 07.

[0025] Please also see Figure 1 , Figure 2 , Figure 3 as well as Figure 4 , Figure 3 This is a schematic structural diagram of the first perspective of the connector 015 provided in this application. Figure 4 015 is a schematic diagram of the structure of the second perspective of the connecting member 015 provided by the present application. The transmission device 01 comprises: a locking tongue 011, a transmission rod 013 and a connecting member 015; the locking tongue 011 and the transmission rod 013 are detachably connected, and the transmission rod 013 drives the locking tongue 011 to move.

[0026] It should be noted that the transmission rod 013 receives the force from the motor 05 and transmits the force to the locking tongue 011 , wherein the direction of the force generated by the motor 05 may change at least twice during the transmission process.

[0027] In the present application, the detachable connection method between the transmission rod 013 and the lock tongue 011 can be snap-fitting, threaded connection, nut and bolt connection, riveting, etc.

[0028] The discussion continues as follows: the connecting member 015 is arranged between the locking tongue 011 and the transmission rod 013; wherein, the locking tongue 011 passes through the connecting member 015 and moves relative to the connecting member 015; meshing transmission occurs between the connecting member 015 and the transmission rod 013, so that the force transmitted to the locking tongue 011 by the transmission rod 013 remains constant.

[0029] It should be noted that meshing transmission can be the following transmission situations, for example: Gear meshing: Gears mesh with each other to transmit torque or change motion. Nut and bolt meshing: In threaded connection, nuts and bolts mesh to achieve tightening. Pin key meshing: used to connect shafts and hubs to prevent relative rotation. Friction meshing: Relying on friction to connect objects together. Magnetic meshing: The attraction or repulsion between magnets causes objects to mesh.

[0030] The connecting member 015 includes: a front wall 0151, a first through hole 0152 is formed on its surface; a rear wall 0153, which is arranged opposite to the front wall 0151 and a second through hole 0154 is formed on its surface, the first through hole 0152 and the second through hole 0154 are opposite to each other; and a left wall 0155 and a right wall 0157, the right wall 0157 is arranged opposite to the left wall 0155; The front wall 0151, the rear wall 0153, the left wall 0155 and the right wall 0157 are connected in sequence to form a hollow area 0156; It should be noted that the connecting member 015 can be an integrated design or a detachable assembly design, that is, the front wall 0151, the rear wall 0153, the left wall 0155 and the right wall 0157 can be integrally formed or assembled.

[0031] The locking tongue 011 passes through the first through hole 0152 and moves relative to the connecting member 015; the transmission rod 013 passes through the second through hole 0154 and moves relative to the connecting member 015. The diameter of the first through hole 0152 matches the shape of the cross section of the locking tongue 011, so that the locking tongue 011 passes through the first through hole 0152 and can slide relative to the first through hole 0152.

[0032] It should be noted that the first through hole 0152 and the second through hole 0154 are positioned relative to each other so that the centers of the two holes are substantially aligned. In the present application, the first through hole 0152 and the second through hole 0154 can be complete through holes, for example, the cross-sectional area of ​​the holes is circular, quadrilateral, triangular, pentagonal, and various irregular closed shapes. At the same time, they can also be semi-open holes, that is, the cross-section of the entire hole presents a semi-open state.

[0033] In the drawings of the present application, the first through hole 0152 is in a semi-open state, and the second through hole 0154 is in a closed state.

[0034] The outer surface of the transmission rod 013 is provided with a limiting protrusion 0131; the circumferential surface of the second through hole 0154 is provided with a groove (not shown); the protrusion 0131 and the groove are meshed with each other, so that meshing transmission occurs between the connecting member 015 and the transmission rod 013.

[0035] It should be noted that the protrusion 0131 and the groove are superordinate concepts, which can be presented in the form of the meshing of the protrusion and groove parts between gear structures, the meshing of the protrusion and groove parts on the worm wheel and worm structure, or the meshing structure between the nut and the bolt.

[0036] Since the meshing transmission process has the stability of force transmission, no matter whether the lock tongue 011 is extended or retracted, the force loaded when the lock tongue is extended or retracted is almost constant due to the mutual engagement process between the protrusion 0131 and the groove.

[0037] In addition, the front wall 0151 is also provided with a mounting groove 0158, and the mounting groove 0158 is located on the side of the first through hole 0152 close to the hollow area 0156. The present application also provides an independent positioning gasket 02, through which the lock tongue 011 passes, and the positions of the positioning gasket 02 and the mounting groove 0158 correspond. In the actual installation process, the positioning gasket 0113 is installed in the mounting groove 0158 to realize the positioning of the lock tongue 011.

[0038] In addition, in the present application, the left wall 0155 includes an inner wall surface 01551 of the left wall, which is the side of the left wall 0155 close to the hollow area 0156; an outer wall surface 01553 of the left wall, which is arranged opposite to the inner wall surface 01551 of the left wall; and the outer wall surface 01553 of the left wall is a non-planar surface. The positions of the first switch 08 and the second switch 09 are both arranged on the outer wall surface 01553 of the left wall; wherein the outer wall surface of the left wall includes: a first switch area 081, which is used to control the opening and closing of the first switch 08; and a second switch area 091, which is used to control the opening and closing of the second switch 09.

[0039] It should be noted that in actual operation, the rotation of the motor 05 drives the reduction gear set 05, which drives the transmission rod 013, which drives the connecting member 015, and finally drives the lock tongue 011 to move. The reduction gear set 05 rotates, while the transmission rod 013, the connecting member 015 and the lock tongue 011 all move linearly. During the movement, the connecting member 015 moves back and forth, resulting in the first switch area 081 and the second switch area 091 changing their positions relative to the first switch 08 and the second switch 09, respectively.

[0040] When in the first position, the first switch area 081 corresponds to the first switch 08, and the second switch 09 and the second switch area 091 are staggered; at this time, the first switch 08 is turned on. When in the second position, the first switch area 081 and the first switch 08 are staggered, and the second switch 09 and the second switch area 091 correspond to each other; at this time, the second switch 09 is turned on.

[0041] It can be seen from this that the connecting member 015 provided in the present application not only has the function of achieving a constant output of the transmission force, but also has the function of controlling the electric switch.

[0042] In addition, the right wall 0157 includes: an inner wall surface 01571 of the right wall, which is the side of the right wall close to the hollow area 0156; an outer wall surface 01573 of the right wall, which is arranged opposite to the inner wall surface 01571 of the right wall; the outer wall surface 01573 of the right wall is a non-planar surface. The outer wall surface 01573 of the right wall is also provided with: an abutting surface 01575, which protrudes outwardly from the outer wall surface 01573 of the right wall; wherein the outer wall surface 01573 of the right wall and the abutting surface 01575 surround a clamping area 01577. In addition, the electronic lock 100 also includes a manual unlocking component 06, a portion of which extends out of the shell 01, and the other portion is accommodated in the shell 01; the manual unlocking component 06 includes a bite piece 061 and a manual unlocking body 063, the bite piece 061 is accommodated in the shell 01, and a portion of the manual unlocking body 063 extends out of the shell 01; the bite piece 061 and the engaging area 01577 correspond in position, and the bite piece 061 is engaged with the engaging area 01577.

[0043] It can be seen that in the present application, the right wall 0157 of the connecting member 015 also serves to connect the manual unlocking component 06, and is used to control the manual unlocking when a fault occurs in the electronic transmission process. For example, when the bite member 061 is engaged with the engagement area 01577, the connecting member 015 is locked and cannot move. At this time, the entire electronic lock 100 is in a locked state. When the bite member 061 is no longer engaged with the engagement area 01577, the connecting member 015 is no longer locked, and the connecting member 015 can move. In the present application, in a preferred embodiment, one end of the manual unlocking component 06 can also be provided with an elastic component, such as a spring, a rubber belt, etc., to provide a rebound force for the manual unlocking component 06.

[0044] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A transmission device, characterized in that: include: Lock tongue: Transmission rod; the lock tongue and the transmission rod are detachably connected, and the transmission rod drives the lock tongue to move; A connecting member, which is arranged between the locking tongue and the transmission rod; The locking tongue passes through the connecting member and moves relative to the connecting member; meshing transmission occurs between the connecting member and the transmission rod, so that the force transmitted to the locking tongue by the transmission rod remains constant.

2. The transmission device according to claim 1, characterized in that: The connecting piece comprises: A front wall, a surface of which is provided with a first through hole; A rear wall, which is arranged opposite to the front wall, and has a second through hole on its surface, wherein the first through hole and the second through hole are located opposite to each other; left wall; a right wall, which is arranged opposite to the left wall; The front wall, the rear wall, the left wall and the right wall are connected in sequence to form a hollow area; The locking tongue passes through the first through hole and moves relative to the connecting member; the transmission rod passes through the second through hole and moves relative to the connecting member.

3. The transmission device according to claim 2, characterized in that: The diameter of the first through hole matches the shape of the cross section of the locking tongue, so that the locking tongue passes through the first through hole and can slide relative to the first through hole.

4. The transmission device according to claim 2, characterized in that: The outer surface of the transmission rod is provided with a limiting protrusion; The circumferential surface of the second through hole is provided with a groove; The protrusion and the groove mesh with each other, so that meshing transmission occurs between the connecting member and the transmission rod.

5. The transmission device according to claim 2, characterized in that: The front wall is provided with a mounting groove, and the mounting groove is arranged at a side of the first through hole close to the hollow area.

6. The transmission device according to claim 2, characterized in that: The left wall comprises: an inner wall surface of the left wall, which is a side of the left wall close to the hollow area; The outer wall surface of the left wall is arranged opposite to the inner wall surface of the left wall; the outer wall surface of the left wall is a non-planar surface.

7. The transmission device according to claim 2, characterized in that: The right wall comprises: an inner wall surface of the right wall, which is a side of the right wall close to the hollow area; The outer wall surface of the right wall is arranged opposite to the inner wall surface of the right wall; the outer wall surface of the right wall is a non-planar surface.

8. The transmission device according to claim 7, characterized in that: The outer wall surface of the right wall is also provided with: an abutment surface, which protrudes outwardly from the outer wall surface of the right wall; Wherein, the outer wall surface of the right wall and the abutting surface form a locking area.

9. An electronic lock, characterized in that: include: The transmission device according to any one of claims 1 to 8; Motor; A reduction gear set connected to the output shaft of the motor; the reduction gear set is connected to the transmission rod to drive the transmission rod to move; a circuit assembly electrically connected to the motor; First switch; a second switch, wherein the second switch and the first switch are both electrically connected to the circuit component; The first switch and the second switch are both arranged on the outer wall surface of the left wall; wherein the outer wall surface of the left wall includes: A first switch area, used to control the opening and closing of the first switch; A second switch area, used to control the opening and closing of the second switch; The transmission device, the reduction gear set, the circuit component, the first switch and the second switch are all installed in the housing.

10. The electronic lock according to claim 9, characterized in that: Also includes: A manual unlocking assembly, a portion of which extends out of the housing and another portion of which is accommodated in the housing; The manual unlocking component comprises: bite piece; A manual unlocking body, the engaging member is accommodated in the shell, and a part of the manual unlocking body extends out of the shell; The engaging member and the engaging area are located correspondingly, and the engaging member is engaged with the engaging area.

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