Electronic lock emergency unlocking structure and electronic lock applying same

Abstract

The electronic lock emergency unlocking structure comprises a lock tongue, a gear piece and an emergency unlocking piece, a lock tongue hole is formed in the bottom of the lock tongue, a lock pin is arranged in the lock tongue hole, a spiral groove is formed in a rotating shaft of the gear piece, and the lock pin is matched with the spiral groove to achieve that the gear piece controls the lock tongue to move. The emergency unlocking piece is installed on the spring bolt, connected with the lock pin and controls the lock pin to move in the spring bolt hole so as to be separated from the screw groove. Due to the fact that the emergency unlocking structure is additionally arranged on the spring bolt, when emergency unlocking is needed, the spring bolt is separated from the gear piece, and therefore the spring bolt is separated from an electrical control system, the spring bolt can be conveniently restored to the unlocking position under small acting force, emergency unlocking is achieved, and in the normal working state, the gear piece can be separated from the gear piece. The emergency unlocking structure does not affect or control the spring bolt.

Description

Technical Field

[0001] The utility model relates to the field of electronic locks, in particular to an electronic lock emergency unlocking structure and an electronic lock using the same. Background Art

[0002] Electronic locks have been widely used in charging guns for new energy vehicles. Their main purpose is to lock the charging gun during the charging process to prevent it from being pulled out by external force before charging is completed, and to automatically unlock it after charging is completed so that the charging gun can be pulled out smoothly. Under normal circumstances, locking and unlocking are controlled by the electrical system, but considering possible electrical system abnormalities, the electronic lock also needs to have an emergency unlocking function, that is, unlocking by manpower to ensure that the charging gun can be pulled out even when the electrical control system is abnormal.

[0003] Under the conventional requirements of the bolt force, the transmission ratio of existing products is designed to be relatively large, which brings the problem that the emergency unlocking force required for emergency unlocking and reverse driving the gear system is also large. However, the market trend for products is that the bolt force is getting bigger and bigger, while the emergency unlocking force is getting smaller and smaller. Therefore, when the electrical system is abnormal or emergency unlocking is required, how to achieve emergency unlocking with less force has become a technical problem that needs to be solved in this field. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide an electronic lock emergency unlocking structure and an electronic lock using the same, when emergency unlocking is required, the lock tongue is separated from the electrical control system to achieve unlocking with less force.

[0005] In order to solve the above technical problems, the utility model provides an electronic lock emergency unlocking structure, comprising:

[0006] A lock tongue, the bottom of which is provided with a lock tongue hole, and a lock pin is arranged in the lock tongue hole;

[0007] A gear member, comprising a gear and a rotating shaft arranged along the axial direction of the gear, a screw groove is provided on the surface of the rotating shaft, the locking pin extends into the screw groove, the rotation of the gear drives the rotating shaft to rotate, and the locking tongue moves in a direction parallel to the rotating shaft through the cooperation between the locking pin and the screw groove;

[0008] An emergency unlocking piece is installed on the lock tongue and connected to the lock pin. The emergency unlocking piece is used to control the lock pin to move in the lock tongue hole to disengage from the screw groove.

[0009] Preferably, the emergency unlocking member comprises a pull rod and an elastic member, the middle portion of the pull rod is rotatably mounted on the outer side wall of the lock tongue hole, and the two ends of the elastic member are respectively connected to the pull rod and the lock tongue;

[0010] A connecting hole is provided on the outer side wall of the lock tongue hole, and one end of the pull rod is connected to the lock pin through the connecting hole;

[0011] A pull rope is installed at the other end of the pull rod. When the pull rope is pulled, the pull rod rotates and drives the locking pin to disengage from the screw groove. The direction of the pulling force generated by pulling the pull rope is the same as the unlocking movement direction of the lock tongue.

[0012] Preferably, the locking pin is provided with a radial groove, and a protrusion is provided on a side of the pull rod facing the locking pin, and the protrusion passes through the connecting hole and is cooperatively connected with the radial groove.

[0013] Preferably, the pull rod is formed in a V-shape, and the bending point of the pull rod is rotatably connected to the outer side wall of the lock tongue hole.

[0014] Preferably, the bending point of the pull rod is rotatably connected to the outer side wall of the lock tongue hole through the cooperation of the hole axis.

[0015] Preferably, the pull rope extends to the outside of the electronic lock.

[0016] Preferably, the axial direction of the rotating shaft is arranged parallel to the axial direction of the locking tongue.

[0017] Preferably, the axial direction of the locking bolt hole is arranged perpendicular to the axial direction of the rotating shaft.

[0018] In order to solve the above technical problems, the utility model also provides an electronic lock, including the above-mentioned electronic lock emergency unlocking structure.

[0019] The utility model adds an emergency unlocking member to the lock tongue, so that when emergency unlocking is needed, the lock tongue is separated from the gear member, thereby disengaging the lock tongue from the electrical control system, making it convenient to restore the lock tongue to the unlocking position under a small force to achieve emergency unlocking. In the normal working state, the emergency unlocking member has no influence or control on the lock tongue. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solution of the utility model, the following briefly introduces the drawings required for use in the utility model. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is an exploded view of an embodiment of an electronic lock emergency unlocking structure of the utility model;

[0022] Figure 2 This is a schematic diagram of normal locking of an embodiment of an electronic lock emergency unlocking structure of the present utility model;

[0023] Figure 3 This is a schematic diagram of the lock pin being disengaged from the screw groove during emergency unlocking of an embodiment of the electronic lock emergency unlocking structure of the utility model;

[0024] Figure 4 This is a schematic diagram showing the completion of emergency unlocking of an embodiment of an electronic lock emergency unlocking structure of the present utility model;

[0025] Figure 5 It is a schematic diagram of the lock pin and the screw groove re-matching after the emergency unlocking of the electronic lock emergency unlocking structure of the present utility model is completed, and is also an unlocking state diagram;

[0026] Figure 6 It is a schematic diagram of a pull rod and a lock pin of an embodiment of an electronic lock emergency unlocking structure of the present utility model being connected through cooperation of a protrusion and a radial groove;

[0027] Figure 7 It is a schematic diagram of a lock tongue of an embodiment of an emergency unlocking structure of an electronic lock of the utility model;

[0028] In the figure, 1-lock tongue; 11-lock pin; 12-connecting hole; 13-lock tongue hole; 14-radial groove; 2-gear member; 21-gear; 22-rotating shaft; 23-screw groove; 3-emergency unlocking member; 31-pull rod; 32-elastic member; 33-pull rope; 34-bump. DETAILED DESCRIPTION

[0029] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] refer to Figure 1-2 and Figure 7 , shows an electronic lock emergency unlocking structure of the utility model, comprising:

[0031] A lock tongue, the bottom of which is provided with a lock tongue hole, and a lock pin is arranged in the lock tongue hole;

[0032] A gear member, comprising a gear and a rotating shaft arranged along the axial direction of the gear, a screw groove is provided on the surface of the rotating shaft, the locking pin extends into the screw groove, the rotation of the gear drives the rotating shaft to rotate, and the locking tongue moves in a direction parallel to the rotating shaft through the cooperation between the locking pin and the screw groove;

[0033] An emergency unlocking piece is installed on the lock tongue and connected to the lock pin. The emergency unlocking piece is used to control the lock pin to move in the lock tongue hole to disengage from the screw groove.

[0034] Preferably, the axial direction of the rotating shaft is arranged parallel to the axial direction of the locking tongue; and the axial direction of the locking tongue hole is arranged perpendicular to the axial direction of the rotating shaft.

[0035] In the embodiment of the utility model, the emergency unlocking member directly controls the movement of the lock pin in the lock tongue hole to disengage from the screw groove, thereby achieving the separation of the lock tongue from the gear member (i.e., the separation of the lock tongue from the electrical control system). After the lock tongue is separated from the gear member, the lock tongue can return to the unlocking position under a small force to achieve emergency unlocking. It should be noted that when the electronic lock is working normally (including locking and unlocking), the lock pin is always in a state of extending out of the lock tongue hole and extending into the screw groove. Although the emergency unlocking member is installed on the lock tongue and is also connected to the lock pin, during the normal operation of the electronic lock, the emergency unlocking member moves synchronously with the lock tongue and has no effect on the lock tongue.

[0036] In a specific embodiment, the emergency unlocking member includes a pull rod and an elastic member, the middle portion of the pull rod is rotatably mounted on the outer side wall of the lock tongue hole, and the two ends of the elastic member are respectively connected to the pull rod and the lock tongue;

[0037] A connecting hole is provided on the outer side wall of the lock tongue hole, and one end of the pull rod is connected to the lock pin through the connecting hole;

[0038] A pull rope is installed at the other end of the pull rod. When the pull rope is pulled, the pull rod rotates and drives the locking pin to disengage from the screw groove. The direction of the pulling force generated by pulling the pull rope is the same as the unlocking movement direction of the lock tongue.

[0039] In this specific implementation, the pull rod rotates around the hole axis connection point between it and the outer wall of the tongue lock hole, and during the rotation, the lock pin connected to one end of it is driven to move; Figure 2 When the electronic lock is working normally, the position of the pull rod under the action of the elastic member (preferably a spring) is defined as the initial position. At this time, the lock pin is pushed out by the pull rod to a state of matching with the screw groove; when emergency unlocking is required, the pull rope is pulled, the pull rod starts to rotate, and at the same time drives the lock pin to move in the lock tongue hole in the direction of disengaging from the screw groove. During the rotation of the pull rod, the spring deformation gradually increases, and the elastic force generated also gradually increases. When the lock pin is completely out of the screw groove, the lock tongue is separated from the gear member, and the lock tongue is no longer controlled by the gear member. Continue to pull the pull rope, and the lock pin gradually and completely retreats into the lock tongue hole (reference Figure 3 ), and the lock tongue moves in the unlocking direction under the action of the pulling force, and finally the lock tongue returns to the unlocking position (reference Figure 4) to achieve emergency unlocking; after the emergency unlocking is completed, release the pull rope, the pull rod rotates in the opposite direction under the action of the spring (the reverse rotation here refers to the rotation direction of the pull rod under the action of the pull rope), and the lock pin is pushed out to the lock tongue hole and extends to the position where it cooperates with the screw groove, and the pull rod also returns to the initial position (reference Figure 5 ). Figure 2-5 In the figure, a connection mode of the spring is shown, where the spring is connected to one end of the connecting lock pin of the pull rod. If the spring does not want to be constrained by this, the spring can also be connected to one end of the installation rope of the pull rod, which can also play the same role. It should be noted that the force required for emergency unlocking of the utility model is actually only related to the elastic coefficient of the spring and the stretched length. Therefore, the actual force required for emergency unlocking can be selected according to the needs of the appropriate spring.

[0040] In a specific embodiment, reference Figure 6 , the lock pin is provided with a radial groove, the pull rod is provided with a protrusion on one side facing the lock pin, the protrusion passes through the connecting hole and is matched with the radial groove. It can be understood that the width of the radial groove along the axial direction of the lock pin is preferably slightly greater than or equal to the size (length or width or diameter) of the protrusion in this direction, that is, the protrusion can be inserted into the radial groove; when the pull rod rotates, the protrusion moves, and the movement of the protrusion drives the lock pin to move, and the length of the connecting hole along the axial direction of the lock tongue hole is greater than the stroke of the protrusion.

[0041] In a specific embodiment, the pull rod is formed into a V-shape, and the bending point of the pull rod is rotatably connected to the outer wall of the lock tongue hole. Preferably, the bending point of the pull rod is rotatably connected to the outer wall of the lock tongue hole through a hole-axis fit. It can be understood that setting the pull rod into a V-shape can save installation space to a certain extent and is more convenient for application in electronic locks. It should be noted that the hole-axis fit between the pull rod and the outer wall of the lock tongue hole can be that the pull rod is provided with a mounting shaft, and the outer wall of the lock tongue hole is provided with a mounting hole, or the pull rod is provided with a mounting hole, and the outer wall of the lock tongue hole is provided with a mounting shaft. The method of realizing rotation by hole-axis fit here can be achieved through existing technology and will not be repeated here.

[0042] In a specific embodiment, the pull cord extends to the outside of the electronic lock. It can be understood that extending to the outside of the electronic lock can facilitate pulling the pull cord.

[0043] The utility model also discloses an electronic lock, which comprises the electronic lock emergency unlocking structure of the above-mentioned solution. Therefore, the electronic lock provided by the utility model at least has all the beneficial effects of the above-mentioned electronic lock emergency unlocking structure.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An electronic lock emergency unlocking structure, It is characterized in that include: A lock tongue, the bottom of which is provided with a lock tongue hole, and a lock pin is arranged in the lock tongue hole; A gear member, comprising a gear and a rotating shaft arranged along the axial direction of the gear, a screw groove is provided on the surface of the rotating shaft, the locking pin extends into the screw groove, the rotation of the gear drives the rotating shaft to rotate, and the locking tongue moves in a direction parallel to the rotating shaft through the cooperation between the locking pin and the screw groove; An emergency unlocking piece is installed on the lock tongue and connected to the lock pin. The emergency unlocking piece is used to control the lock pin to move in the lock tongue hole to disengage from the screw groove.

2. The electronic lock emergency unlocking structure as claimed in claim 1, It is characterized in that The emergency unlocking member includes a pull rod and an elastic member, the middle portion of the pull rod is rotatably mounted on the outer side wall of the lock tongue hole, and the two ends of the elastic member are respectively connected to the pull rod and the lock tongue; A connecting hole is provided on the outer side wall of the lock tongue hole, and one end of the pull rod is connected to the lock pin through the connecting hole; A pull rope is installed at the other end of the pull rod. When the pull rope is pulled, the pull rod rotates and drives the locking pin to disengage from the screw groove. The direction of the pulling force generated by pulling the pull rope is the same as the unlocking movement direction of the lock tongue.

3. The electronic lock emergency unlocking structure as claimed in claim 2, It is characterized in that The locking pin is provided with a radial groove, and a protrusion is provided on a side of the pull rod facing the locking pin. The protrusion passes through the connecting hole and is matched and connected with the radial groove.

4. The electronic lock emergency unlocking structure as claimed in claim 3, It is characterized in that The pull rod is formed in a V shape, and the bending point of the pull rod is rotatably connected to the outer side wall of the lock tongue hole.

5. The electronic lock emergency unlocking structure as claimed in claim 4, It is characterized in that The bending point of the pull rod is rotatably connected with the outer side wall of the lock tongue hole through the hole axis.

6. The electronic lock emergency unlocking structure as claimed in claim 2, It is characterized in that The pull cord extends to the outside of the electronic lock.

7. The electronic lock emergency unlocking structure according to claim 1, It is characterized in that The axial direction of the rotating shaft is arranged parallel to the axial direction of the locking tongue.

8. The electronic lock emergency unlocking structure as claimed in claim 7, It is characterized in that The axial direction of the locking tongue hole is perpendicular to the axial direction of the rotating shaft.

9. An electronic lock, It is characterized in that It comprises the electronic lock emergency unlocking structure as described in any one of claims 1 to 8.

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