Transmission device and electronic lock

Abstract

The utility model 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 utility model relates to electronic lock technical field especially, it relates to a transmission device and electronic lock. BACKGROUND

[0002] With the development of science and technology, electronic lock has gradually popularized in people's life, in the existing electronic lock technical field, generally through the positive rotation and reverse rotation of motor drive the extension and retraction of lock tongue, realize the opening and closing of door, window, cabinet, charging gun. For example: the charging gun in the use process, when needing to charge electric vehicle, need to lock the charging gun. Therefore, the charging gun of new energy electric vehicle needs to be locked and controlled, so that it cannot be randomly loaded and unplugged to produce accidental risk, and the consistency of the trigger position of the transmission mechanism and the signal switch.

[0003] But in the new energy charging device industry national standard, the electronic lock needs to have standard conditions in the force of the lock tongue extension and the lock tongue retraction in the opening and closing sequence. For example, when the lock tongue extends, 50N force is needed, and when the lock tongue retracts, 50N force is required. However, the force of the lock tongue extension and the lock tongue retraction of the existing electronic lock is not designed in this way. The existing electronic lock can control the force during the lock tongue extension, but when the lock tongue of the electronic lock retracts, it often relies on the instantaneous springback force of the spring or the instantaneous reverse force of the motor, which often leads to the force of the lock tongue extension being much greater than the force of the lock tongue retraction, resulting in many electronic locks failing to meet the actual use requirements or some industry standards. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies in the prior art, the utility model provides a transmission device, which comprises 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. The lock tongue passes through the connecting piece and moves relative to the connecting piece. The connecting piece and the transmission rod are in meshing transmission, so that the force transmitted by the transmission rod to the lock tongue remains constant, and the consistency of the trigger position of the transmission mechanism and the signal switch is ensured.

[0005] Specifically, the connecting piece comprises:

[0006] A front wall having a first through hole formed on its surface;

[0007] A rear wall arranged opposite to the front wall and having a second through hole formed on its surface, the first through hole and the second through hole being opposite to each other;

[0008] A left wall;

[0009] a right wall, which is oppositely arranged to the left wall;

[0010] the front wall, the rear wall, the left wall and the right wall are sequentially connected and jointly enclose a hollow region;

[0011] the lock tongue passes through the first through hole and moves relative to the connecting piece; the transmission rod passes through the second through hole and moves relative to the connecting piece.

[0012] Specifically, the hole diameter of the first through hole and the shape of the cross section of the lock tongue are matched, so that the lock tongue passes through the first through hole and can slide relative to the first through hole.

[0013] Specifically, 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 are engaged with each other to enable the engagement transmission between the connecting piece and the transmission rod.

[0014] Specifically, the front wall is provided with a mounting groove, and the mounting groove is arranged on the side of the first through hole close to the hollow region.

[0015] Specifically, the left wall includes an inner wall surface of the left wall, which is on the side of the left wall close to the hollow region.

[0016] an outer wall surface of the left wall, which is oppositely arranged to the inner wall surface of the left wall; the outer wall surface of the left wall is a non-plane.

[0017] Specifically, the right wall includes: an inner wall surface of the right wall, which is on the side of the right wall close to the hollow region; an outer wall surface of the right wall, which is oppositely arranged to the inner wall surface of the right wall; the outer wall surface of the right wall is a non-plane.

[0018] Specifically, the outer wall surface of the right wall is further provided with: an abutting surface, which is outwardly protruded from the outer wall surface of the right wall; wherein the outer wall surface of the right wall and the abutting surface enclose a clamping area.

[0019] This utility model also provides an electronic lock, comprising: the aforementioned transmission device; 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, both the second switch and the first switch being electrically connected to the circuit assembly; the first switch and the second switch being located 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 being used to control the opening and closing of the first switch; the second switch area being used to control the opening and closing of the second switch; and a housing, wherein the transmission device, the reduction gear set, the circuit assembly, the first switch, and the second switch are all installed within the housing.

[0020] Specifically, the electronic lock also includes a manual unlocking component, a portion of which extends out of the housing and the other portion is housed inside the housing; the manual unlocking component includes a biting member and a manual unlocking body, the biting member is housed in the housing, and a portion of the manual unlocking body extends out of the housing; the biting member and the engagement area are positioned correspondingly, and the biting member engages with the engagement area. Attached Figure Description

[0021] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention. Some specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings in an exemplary and non-limiting manner. The same reference numerals in the drawings designate the same or similar parts or components. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale, wherein:

[0022] Figure 1 This is a structural schematic diagram of the electronic lock 001 provided by this utility model.

[0023] Figure 2 This is a disassembly diagram of the electronic lock 001 provided by this utility model.

[0024] Figure 3 A first-view structural schematic diagram of the connector 015 provided in this application;

[0025] Figure 4 This is a structural schematic diagram of the connector 015 provided in this application from a second perspective. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0028] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0031] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of the electronic lock 001 provided by this utility model. The electronic lock 001 includes a housing 02, which includes an upper housing 021 and a lower housing 023. The upper housing 021 and the lower housing 023 are detachably connected and are positioned opposite each other to form a housing space for accommodating components.

[0032] It should be noted that the connection between the upper shell 021 and the lower shell 023 can be achieved through riveting, interference fit, screwing, bolting, or other methods. In this application, a screw connection is selected. Specifically, screw holes are provided in both the upper shell 021 and the lower shell 023, and external screws pass through these holes to connect and assemble the upper shell 021 and the lower shell 023.

[0033] Please see Figure 2 , Figure 2 This is a disassembled structural diagram of the electronic lock 001 provided by this utility model. 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. The motor 03 includes an output shaft 031, which 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 in deceleration and buffering during transmission. The reduction gear set 05 is connected to the transmission device 01 to drive the transmission device 01 to move.

[0034] It should be noted that the reduction gear set 05 is to be interpreted in an appropriate and expansive manner in this application. For example, the worm gear structure can also be understood as a form of the reduction gear set 05.

[0035] Circuit assembly 07 includes circuit board 071 and wires (not shown in the figure). Since this application is an electronic lock structure, circuit board 071 includes electronic components to enable interaction with external signal transmitting devices, thereby controlling the opening and closing of the electronic lock. The wires electrically connect to the electronically controlled components in the electronic lock 001. For example, in this application, the electronic components in circuit board 071, connected by wires, control the starting and stopping of motor 03. The electronic lock 001 in this application also includes a first switch 08 and a second switch 09; both the second switch 09 and the first switch 08 are electrically connected to circuit assembly 07.

[0036] Please also refer to Figure 1 , Figure 2 , Figure 3 as well as Figure 4 The Figure 3 A first-view structural schematic diagram of the connector 015 provided in this application. Figure 4 This is a second-view structural schematic diagram of the connector 015 provided in this application. The transmission device 01 includes: a locking tongue 011, a transmission rod 013, and the connector 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.

[0037] 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. During the transmission process, the direction of the force emitted by the motor 05 may change at least twice.

[0038] In this application, the detachable connection between the transmission rod 013 and the locking tongue 011 can be a snap-fit ​​connection, a threaded connection, a nut and bolt connection, a riveting connection, or other methods.

[0039] Continuing the discussion, the connecting member 015 is disposed 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; the connecting member 015 and the transmission rod 013 engage in transmission, so that the force transmitted by the transmission rod 013 to the locking tongue 011 remains constant.

[0040] It should be noted that meshing transmission can take several forms, such as: Gear meshing: Gears mesh with each other to transmit torque or change motion. Nut and bolt meshing: In threaded connections, nuts and bolts mesh to achieve fastening. Key and pin meshing: Used to connect shafts and hubs to prevent relative rotation. Friction meshing: Objects are connected by friction. Magnetic meshing: Objects are meshed by the attractive or repulsive forces between magnets.

[0041] The connector 015 includes: a front wall 0151 with a first through hole 0152 on its surface; a rear wall 0153 opposite to the front wall 0151 with a second through hole 0154 on its surface, the first through hole 0152 and the second through hole 0154 being opposite to each other; and a left wall 0155 and a right wall 0157, the right wall 0157 being opposite to the left wall 0155.

[0042] 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 region 0156.

[0043] It should be noted that the connector 015 can be an integrated design or a detachable assembly design. That is to say, the front wall 0151, rear wall 0153, left wall 0155 and right wall 0157 can be integrally formed or assembled.

[0044] The latch 011 passes through the first through hole 0152 and moves relative to the connector 015; the transmission rod 013 passes through the second through hole 0154 and moves relative to the connector 015. The diameter of the first through hole 0152 matches the shape of the cross-section of the latch 011, allowing the latch 011 to pass through the first through hole 0152 and slide relative to it.

[0045] It should be noted that the first through hole 0152 and the second through hole 0154 are positioned opposite each other, so that the centers of the holes are basically aligned. In this 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 hole 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.

[0046] In the accompanying drawings of this application, the first through hole 0152 is in a semi-open state, and the second through hole 0154 is in a closed state.

[0047] 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 mesh with each other so that the connecting member 015 and the transmission rod 013 engage and transmit power.

[0048] It should be noted that the protrusion 0131 and the groove are higher-level concepts, and they can be presented as meshing of the protrusion and groove portions between gear structures, meshing of the protrusion and groove portions on worm gear and worm shaft structures, or meshing structures between nuts and bolts.

[0049] Because the meshing transmission process has stable force transmission, the force applied to the extension or retraction of the latch 011 is almost constant due to the meshing process between the protrusion 0131 and the groove.

[0050] Furthermore, the front wall 0151 is also provided with a mounting groove 0158, which is located on the side of the first through hole 0152 near the hollow region 0156. This application also provides an independent positioning washer 02, through which the latch 011 passes. The positioning washer 02 and the mounting groove 0158 are positioned correspondingly. In actual installation, the positioning washer 0113 is installed in the mounting groove 0158 to position the latch 011.

[0051] Furthermore, in this application, the left wall 0155 includes an inner wall surface 01551, which is the side of the left wall 0155 closest to the hollow region 0156; and an outer wall surface 01553, which is disposed opposite to the inner wall surface 01551; the outer wall surface 01553 is non-planar. The first switch 08 and the second switch 09 are both located 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 for controlling the opening and closing of the first switch 08; and a second switch area 091 for controlling the opening and closing of the second switch 09.

[0052] It should be noted that in actual operation, the rotation of motor 05 drives reduction gear set 05, which in turn drives transmission rod 013, which in turn drives connecting piece 015, ultimately causing the locking tongue 011 to move. Specifically, reduction gear set 05 rotates; while transmission rod 013, connecting piece 015, and locking tongue 011 all undergo linear motion. During this motion, connecting piece 015 moves back and forth, causing the positions of the first switch area 081 and the second switch area 091 relative to the first switch 08 and the second switch 09, respectively, to change.

[0053] When in the first working position, the positions of the first switch area 081 and the first switch 08 correspond, and the positions of the second switch 09 and the second switch area 091 are offset; at this time, the first switch 08 is open. When in the second working position, the positions of the first switch area 081 and the first switch 08 are offset, and the positions of the second switch 09 and the second switch area 091 correspond; at this time, the second switch 09 is open.

[0054] It can be seen that the connector 015 provided in this application not only has the function of realizing a constant output of transmission force, but also has the function of controlling electric switches.

[0055] Furthermore, the right wall 0157 includes: an inner wall surface 01571, which is the side of the right wall closest to the hollow region 0156; and an outer wall surface 01573, which is disposed opposite to the inner wall surface 01571; the outer wall surface 01573 is non-planar. The outer wall surface 01573 of the right wall also includes: an abutment surface 01575, which protrudes outward from the outer wall surface 01573; wherein the outer wall surface 01573 and the abutment surface 01575 form an engagement area 01577. In addition, the electronic lock 100 also includes a manual unlocking component 06, a portion of which extends out of the housing 01 and the other portion is housed inside the housing 01; the manual unlocking component 06 includes an engaging member 061 and a manual unlocking body 063, the engaging member 061 is housed in the housing 01, and a portion of the manual unlocking body 063 extends out of the housing 01; the engaging member 061 and the engaging area 01577 are positioned correspondingly, and the engaging member 061 engages with the engaging area 01577.

[0056] Therefore, in this application, the right wall 0157 of the connector 015 also serves to connect the manual unlocking component 06, controlling manual unlocking when the electronic transmission process malfunctions. For example, when the engaging member 061 is engaged in the engaging area 01577, the connector 015 is locked and cannot move, and the entire electronic lock 100 is in a locked state. When the engaging member 061 is no longer engaged in the engaging area 01577, the connector 015 is no longer locked and can move. In a preferred embodiment, one end of the manual unlocking component 06 may also be provided with an elastic component, such as a spring or rubber band, to provide a restoring force for the manual unlocking component 06.

[0057] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A transmission device, characterized in that, include: Locking tongue: A transmission rod; the locking tongue and the transmission rod are detachably connected, and the transmission rod drives the locking tongue to move; A connecting member is disposed between the locking tongue and the transmission rod; The locking tongue passes through the connector and moves relative to the connector; the connector and the transmission rod engage to ensure that the force transmitted by the transmission rod to the locking tongue remains constant.

2. The transmission device as described in claim 1, characterized in that, The connector includes: The front wall has a first through hole on its surface; The rear wall is disposed opposite to the front wall, and a second through hole is formed on its surface, with the first through hole and the second through hole being positioned opposite each other. left wall; The right wall is positioned opposite 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 connector; the transmission rod passes through the second through hole and moves relative to the connector.

3. The transmission device as described in claim 2, characterized in that, The diameter of the first through hole matches the shape of the cross-section of the latch, so that the latch passes through the first through hole and can slide relative to the first through hole.

4. The transmission device as described in claim 2, characterized in that, The outer surface of the transmission rod is provided with a limit protrusion; The circumferential surface of the second through hole is provided with a groove; The protrusion and the groove engage with each other to enable meshing transmission between the connector and the transmission rod.

5. The transmission device as described in claim 2, characterized in that, The front wall is provided with a mounting groove, which is located on the side of the first through hole near the hollow area.

6. The transmission device as described in claim 2, characterized in that, The left wall includes: The inner wall surface of the left wall is the side of the left wall closest to the hollow region; The outer wall surface of the left wall is positioned opposite to the inner wall surface of the left wall; the outer wall surface of the left wall is non-planar.

7. The transmission device as described in claim 2, characterized in that, The right wall includes: The inner wall surface of the right wall is the side of the right wall closest to the hollow region; The outer wall surface of the right wall is positioned opposite to the inner wall surface of the right wall; the outer wall surface of the right wall is non-planar.

8. The transmission device as described in claim 7, characterized in that, The outer wall surface of the right wall is also provided with an abutting surface that protrudes outward from the outer wall surface of the right wall. 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 as described in any one of claims 1 to 8; Electric motor; A reduction gear set is 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 that is electrically connected to the motor; First switch; A second switch, both the second switch and the first switch are electrically connected to the circuit assembly; Both the first switch and the second switch are located on the outer wall surface of the left wall; wherein, the outer wall surface of the left wall includes: 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; The housing, the transmission device, the reduction gear set, the circuit assembly, the first switch and the second switch are all installed inside the housing.

10. The electronic lock as described in claim 9, characterized in that, Also includes: The manual unlocking component has one part extending outside the housing and the other part housed inside the housing; The manual unlocking component includes: Engaging components; The manually unlocking body has a locking element housed within the housing, and a portion of the manually unlocking body extends outside the housing. The engagement element and the engagement area are positioned correspondingly, and the engagement element engages with the engagement area.

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