A lock

Abstract

The invention discloses a lock, comprising a lock body, a lock cap, a main lock tongue and a secondary lock tongue; the lock body is arranged on a movable side, the lock cap is arranged on a fixed side; the lock cap is provided with a first lock groove and a second lock groove, the main lock tongue is arranged on the lock body and can move relative to the lock body and extend into the first lock groove, the secondary lock tongue is arranged on the lock body, the secondary lock tongue can swing in an inward and outward direction relative to the lock body and extend into the second lock groove and reciprocate in a direction away from the lock cap; when the secondary lock tongue extends into the second lock groove, the main lock tongue is aligned with the first lock groove. The lock can improve the stability and safety of locking, and avoid the main lock tongue from pressing against a cabinet, avoid damage to the main lock tongue, and extend the service life of the lock.

Description

Technical Field

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

[0002] As an anti-theft tool, locks are used to lock objects to prevent others from entering. In recent years, with the rapid development of electronic technology, traditional locks have undergone earth-shaking changes. Modern electronic technology is combined with mechanical technology to produce advanced electronic locks. At present, electronic locks often use non-mechanical keys such as passwords, random codes, QR codes, fingerprint recognition, iris recognition, magnetic cards, radio frequency cards, TM cards, etc. as user identification IDs to open and close the locks. They are more intelligent in terms of user identification, security, and management. Therefore, they are widely used in various storage boxes, such as long gun cabinets and fireproof cabinets.

[0003] However, in the prior art, electronic locks still have the following problems when used:

[0004] 1. When the electronic lock is in use, if the cabinet door is half-closed, the distance between the cabinet door and the cabinet body is small, so the sensor switch on the electronic lock is often triggered to work, thereby generating a locking signal and driving the lock tongue to extend. At this time, the lock tongue and the lock slot are not aligned, so the lock tongue extends and hits the cabinet body, which will affect the service life of the electronic lock;

[0005] 2. At present, when the electronic lock is in use, if the cabinet door is ajar, the electronic lock cannot be locked because the lock tongue and the lock slot are not aligned, so that the cabinet door appears to be closed, but is actually not locked, thus causing a greater safety hazard. Summary of the invention

[0006] In view of the above problems, the present invention proposes a lock to overcome the above problems or at least partially solve the above problems.

[0007] A lock comprises a lock body, a lock cap, a main lock tongue and a secondary lock tongue; the lock body is arranged on a movable side, and the lock cap is arranged on a fixed side; the lock cap is provided with a first lock groove and a second lock groove, the main lock tongue is arranged on the lock body and can move relative to the lock body and extend into the first lock groove, the secondary lock tongue is arranged on the lock body, the secondary lock tongue can swing in an inward and outward direction relative to the lock body and extend into the second lock groove and reciprocate in a direction away from the lock cap; when the secondary lock tongue extends into the second lock groove, the main lock tongue is aligned with the first lock groove.

[0008] Preferably, the lock is also provided with a lock body track, and a control rod is provided on the secondary lock tongue; the lock body track is a closed-loop structure, and the control rod is slidably arranged in the lock body track and can move unidirectionally along the lock body track to drive the secondary lock tongue to swing relative to the lock body and reciprocate in a direction close to the lock cap.

[0009] Preferably, the lock body track consists of an inclined track, a vertical track, a first horizontal track, a curved track and a second horizontal track connected in sequence; the inclined track is inclined along an outward direction relative to the lock body, the vertical track is vertically arranged along an outward direction relative to the lock body, the first horizontal track and the second horizontal track are arranged in parallel and are both perpendicular to the vertical track, and the curved track is bent in a direction close to the lock cap.

[0010] Preferably, the lock is further provided with a motor, a telescopic frame and a control spring, a first guide block is provided between the second horizontal track and the inclined track, and a second guide block is provided between the arc track and the second horizontal track; the motor is connected to the telescopic frame to drive the telescopic frame to reciprocate relative to the lock body in a direction parallel to the first horizontal track; the telescopic frame is connected to the secondary lock tongue through a torsion spring, and the torsion spring can drive the secondary lock tongue to swing inward relative to the lock body; the control spring is connected to the control rod to drive the control rod to extend into the lock body track; the side of the first guide block facing the second horizontal track is an inclined surface, and the side facing the inclined track is a vertical surface; the side of the second guide block facing the arc track is an inclined surface, and the side facing the second horizontal track is a vertical surface.

[0011] Preferably, the lock is also provided with a control disk and a control pin, and a telescopic slot is provided on the telescopic frame; the control disk is rotatably arranged on the lock body, the control pin is eccentrically arranged on the control disk, the control pin is slidably arranged in the telescopic slot, and the telescopic slot is arranged in a direction perpendicular to the reciprocating movement of the telescopic frame relative to the lock body; the motor is connected to the control disk to drive the control disk to rotate; when the control pin moves to a position close to the lock cap, the control rod moves to the tail end of the first horizontal track.

[0012] Preferably, the motor drives the control disk to rotate via a worm gear and a worm.

[0013] Preferably, the lock is also provided with a positioning plate and a lock tongue spring; the positioning plate is located between the lock body and the main lock tongue to position the main lock tongue in a position away from the first lock groove; the lock tongue spring is located between the main lock tongue and the lock body to drive the main lock tongue to move in a direction of extending into the first lock groove.

[0014] Preferably, one end of the positioning plate is rotatably set on the lock body, the other end of the positioning plate is provided with a positioning hook, a spring sheet is provided between the positioning plate and the lock body, and a positioning groove is provided on the main lock tongue; the spring sheet can drive the positioning plate to rotate until the positioning hook extends into the positioning groove.

[0015] Preferably, a positioning bevel is provided on the positioning hook; the positioning bevel faces the direction in which the locking tongue spring drives the main locking tongue to move.

[0016] Preferably, a lock tongue groove is provided on the main lock tongue, and a plate is provided on the positioning plate; the end of the control rod extends into the lock tongue groove, and the control rod can move relatively in the lock tongue groove and push the main lock tongue to overcome the lock tongue spring to move, and when the positioning hook is located in the positioning groove, the plate is located and extends into the lock tongue groove; when the control rod moves to the tail end position of the arc track, the control rod abuts against the plate to drive the positioning plate to overcome the spring leaf and drive the positioning hook to disengage from the positioning groove; when the control rod moves along the second horizontal track, the control rod disengages from the contact with the plate and pushes the main lock tongue to overcome the lock tongue spring to move.

[0017] The lock of the present invention has the following beneficial technical effects: in the present invention, by arranging a main lock tongue and a secondary lock tongue on the lock body, and arranging corresponding first lock groove and second lock groove on the lock cap, when the lock of this embodiment is used for locking, the secondary lock tongue is first swung outward, and then the secondary lock tongue is swung inward and extends into the second lock groove, so that the main lock tongue is aligned with the first lock groove, and then the main lock tongue is inserted into the first lock groove, so that the main lock tongue and the secondary lock tongue are respectively located in the first lock groove and the second lock groove, thereby improving the stability and safety of locking, and preventing the main lock tongue from pressing against the cabinet body, avoiding damage to the main lock tongue, and extending the service life of the lock. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional schematic diagram of a cabinet using the lock of this embodiment;

[0019] Figure 2 A three-dimensional schematic diagram of a cabinet in an open state using the lock of this embodiment;

[0020] Figure 3 Schematic diagram of the cross-sectional structure of the lock of this embodiment;

[0021] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure along the AA direction;

[0022] Figure 5 for Figure 3 Schematic diagram of the cross-sectional structure along the BB direction;

[0023] Figure 6 It is a partial three-dimensional schematic diagram of the lock body track of this embodiment;

[0024] Figure 7 When the cabinet door is half-closed and the lock tongue swings outwards Figure 3 Schematic diagram of the cross-sectional structure along the BB direction;

[0025] Figure 8 The cabinet door is half-closed and the lock tongue is locked Figure 3 Schematic diagram of the cross-sectional structure along the BB direction;

[0026] Fig. 9 When the bolt is locked for the first time in this embodiment Figure 3 Schematic diagram of the cross-sectional structure along the BB direction. DETAILED DESCRIPTION

[0027] The technical solution of the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0028] Combination Figures 1 to 9 As shown, the lock of this embodiment includes a lock body 1, a lock cap 2, a main lock tongue 3 and a secondary lock tongue 4. The lock body 1 is arranged on a cabinet door 5 as a movable side, and the lock cap 2 is arranged on a cabinet body 6 as a fixed side. The lock cap 2 is provided with a first lock groove 7 and a second lock groove 8. The main lock tongue 3 is arranged on the lock body 1 and can move relative to the lock body 1 and extend into the first lock groove 7. The secondary lock tongue 4 is arranged on the lock body 1 and can swing outward and inward relative to the lock body 1 to enter the second lock groove 8 and reciprocate in a direction away from the lock cap 2, that is, the secondary lock tongue 4 can move along the lock body 1. Figure 5 The vertical direction shown is swung outward from the lock body 1 to Figure 7 The status shown and Figure 5 Meanwhile, when the secondary lock tongue 4 extends into the second lock groove 8, the main lock tongue 3 is aligned with the first lock groove 7.

[0029] In this embodiment, by providing a main lock tongue and a secondary lock tongue on the lock body, and providing corresponding first lock grooves and second lock grooves on the lock cap, when the lock of this embodiment is used for locking, the secondary lock tongue is first swung outwards, that is, Figure 7 The secondary lock tongue swings out from the lock body in the direction of closing the cabinet door, and then swings inwards into the second lock slot. Fig. 9 The secondary lock tongue is shown to swing inward and enter the second lock groove, so that the main lock tongue is aligned with the first lock groove, and then the main lock tongue is inserted into the first lock groove, so that the main lock tongue and the secondary lock tongue are respectively located in the first lock groove and the second lock groove, thereby improving the stability and safety of the locking, and preventing the main lock tongue from pressing against the cabinet body, avoiding damage to the main lock tongue, and extending the service life of the lock.

[0030] Combination Figures 3 to 9As shown, in the lock of this embodiment, a lock body track 9 is provided on the lock body 1, and a control rod 10 is provided on the secondary lock tongue 4. The lock body track 9 is a closed loop structure, and the control rod 10 is slidably arranged in the lock body track 9 and can move unidirectionally along the lock body track 9 to drive the secondary lock tongue 4 to swing outward and inward relative to the lock body 1 and reciprocate in the direction close to the lock cap 2.

[0031] In this embodiment, by setting a lock body track on the lock body and setting a control rod on the secondary lock tongue that extends into the lock body track, the control rod can be driven to move along the lock body track to complete the swing control of the secondary lock tongue and the operation of entering and exiting the second lock groove, thereby improving the convenience of operation control.

[0032] Combination Figure 6 As shown, in the lock of this embodiment, the lock body track 9 is specifically composed of an inclined track 11, a vertical track 12, a first horizontal track 13, an arc track 14 and a second horizontal track 15 connected in sequence. Among them, the inclined track 11 is inclined in the direction of swinging outward relative to the lock body 1, the vertical track 12 is vertically arranged in the direction of swinging outward relative to the lock body 1, the first horizontal track 13 and the second horizontal track 15 are arranged in parallel and are both perpendicular to the vertical track 12, and the arc track 14 is bent in the direction close to the lock cap 2.

[0033] At this time, combined Figures 5 to 9 As shown, when the control rod 10 moves along the inclined track 11, the control rod 10 can drive the secondary lock tongue 4 to swing outward and move toward the direction close to the lock cap 2; when the control rod 10 moves along the vertical track 12, the control rod 10 drives the secondary lock tongue 4 to continue to swing outward; when the control rod 10 moves along the first horizontal track 13, the control rod 10 drives the secondary lock tongue 4 to maintain the outward swinging state and move toward the direction close to the second lock groove 8; when the control rod 10 moves along the arc track 14, the control rod 10 drives the secondary lock tongue 4 to swing inward and extend into the second lock groove 8; when the control rod 10 moves along the second horizontal track 15, the control rod 10 drives the secondary lock tongue 4 to move in the direction away from the lock cover 2 and move out of the second lock groove 8.

[0034] In this embodiment, by designing the lock body track as a closed-loop structure composed of multiple tracks connected in sequence, the secondary lock tongue can be swung into the second lock slot and moved out of the second lock slot through the lock body track during the process of driving the control rod to move, thereby further improving the automation and convenience of the lock operation.

[0035] Combination Figures 3 to 9As shown, in the lock of this embodiment, a motor 16, a telescopic frame 17 and a control spring 18 are also provided, and a first guide block 19 is provided between the second horizontal track 15 and the inclined track 11, and a second guide block 20 is provided between the arc track 14 and the second horizontal track 15. The motor 16 is arranged on the lock body 1, and the motor 16 forms a transmission connection with the telescopic frame 17 to drive the telescopic frame 17 to reciprocate relative to the lock body 1 in a direction parallel to the first horizontal track 15, that is, along Figure 3 and Figure 5 The telescopic frame 17 is connected to the secondary lock tongue 4 through a torsion spring 21, and the torsion spring 21 can drive the secondary lock tongue 4 to swing inward relative to the lock body 1, that is, Figure 5 The secondary locking tongue 4 is driven to rotate counterclockwise. The control spring 18 is connected to the control rod 10 to drive the control rod 10 to extend into the lock body track 9. The side of the first guide block 19 facing the second horizontal track 15 is a first inclined surface 22, and the side facing the inclined track 11 is a first vertical surface 23. The side of the second guide block 20 facing the arc track 14 is a second inclined surface 24, and the side facing the second horizontal track 15 is a second vertical surface 25.

[0036] At this time, when the telescopic frame is driven by the motor to move back and forth linearly relative to the lock body, the control rod can be controlled to move unidirectionally along the lock body track by using the control spring, the first guide block and the second guide block, thereby improving the precise control of the secondary lock tongue action.

[0037] Combination Figure 3 , Figure 5 as well as Figures 7 to 9 As shown, in the lock of this embodiment, a control disk 26 and a control pin 27 are further provided, and a telescopic slot 28 is provided on the telescopic frame 17. The control disk 26 is rotatably provided on the lock body 1, the control pin 27 is eccentrically provided on the control disk 26, the control pin 27 is slidably provided in the telescopic slot 28, and the telescopic slot 28 is provided in a direction perpendicular to the reciprocating movement direction of the telescopic frame 17 relative to the lock body 1, that is, the telescopic slot 28 is provided in a direction perpendicular to the reciprocating movement direction of the telescopic frame 17 relative to the lock body 1. Figure 3 The motor 16 is connected to the control disk 26 to drive the control disk 26 to rotate. When the control disk 26 rotates 180 degrees, the control pin 27 moves to a position close to the lock cap 2 as the control disk 26 rotates, and the control rod 10 just moves to the tail end of the first horizontal track 13.

[0038] In this embodiment, with the help of the control disk, the control pin and the telescopic slot, the connection and disengagement of the secondary lock tongue and the second lock slot can be completed in sequence during the process of driving the control disk to rotate continuously, further improving the convenience of operation control.

[0039] Combination Figure 3 , Figure 5 as well as Figures 7 to 9 As shown, in the lock of this embodiment, the control disk 26 adopts a worm gear structure, and a worm 29 is provided between the motor 16 and the control disk 26, so as to form a drive of the control disk by the worm gear structure. Of course, in other embodiments, the control disk may also adopt a non-worm gear structure, and the worm gear and the control disk may be coaxially fixedly connected, so as to achieve the purpose of the motor driving the control disk to rotate through the worm gear and the worm.

[0040] In this embodiment, by adopting a worm gear structure, the stability and accuracy of the control pin movement control can be improved, thereby improving the control accuracy of the secondary lock tongue action and improving the locking and opening accuracy of the lock.

[0041] Combination Figure 3 and Figure 4 As shown, in the lock of this embodiment, a positioning plate 30 and a lock tongue spring 31 are further provided. The positioning plate 30 is located between the lock body 1 and the main lock tongue 3 to position the main lock tongue 3 to be separated from the first lock groove 7. The lock tongue spring 31 is located between the main lock tongue 3 and the lock body 1 to drive the main lock tongue 3 to move in the direction of extending into the first lock groove 7.

[0042] At this time, when the secondary lock tongue is extended into the second lock slot to align the main lock tongue with the first lock slot, the main lock tongue can be directly pushed into the first lock slot by controlling the positioning plate to release the limit on the main lock tongue, and the lock tongue spring can be used to push the main lock tongue into the first lock slot to complete the locking. Conversely, after the main lock tongue is withdrawn from the first lock slot, the positioning plate can be used to accurately limit the main lock tongue at a position that is disconnected from the first lock slot, thereby improving the operating convenience and action stability of the lock.

[0043] Combination Figure 4 As shown, in the lock of this embodiment, one end of the positioning plate 30 is rotatably arranged on the lock body 1, the other end of the positioning plate 30 is provided with a positioning hook 32, and a spring 33 is provided between the positioning plate 30 and the lock body 1, and a positioning groove 34 is provided on the main lock tongue 3. The spring 33 can drive the positioning plate 30 to rotate until the positioning hook 32 extends into the positioning groove 34, so as to limit the main lock tongue 3 from being inserted into the first lock groove 7.

[0044] In addition, combined Figure 4 As shown, in the lock of this embodiment, a positioning bevel 35 is provided on the positioning hook 32. The positioning bevel 35 faces the direction in which the lock tongue spring 31 drives the main lock tongue 3 to move, that is, toward Figure 4 Left direction shown.

[0045] At this time, when the main lock tongue exits the first lock groove, the main lock tongue can be used to directly drive the positioning plate to rotate using the positioning inclined surface, so that when the positioning groove moves to align with the positioning hook, the positioning hook automatically extends into the positioning groove, thereby realizing automatic limiting of the main lock tongue.

[0046] Combination Figure 3 and Figure 4 As shown, in the lock of this embodiment, a lock tongue groove 36 is provided on the main lock tongue 3, and a plate 37 is provided on the positioning plate 30. The end of the control rod 10 extends into the lock tongue groove 36 and can move relatively in the lock tongue groove 36 and push the main lock tongue 3 to overcome the lock tongue spring 31 to move. When the positioning hook 32 is located in the positioning groove 34, the plate 37 is located in a position state of extending into the lock tongue groove 36. When the control rod 10 moves to the tail end position of the arc track 14, that is, when the control rod 10 passes over the second guide block 20, the control rod 10 abuts against the plate 37 to drive the positioning plate 30 to overcome the spring 33 and drive the positioning hook 32 to disengage from the positioning groove 34. When the control rod 10 moves along the second horizontal track 15, the control rod 10 breaks away from the contact with the plate 37 and pushes the main lock tongue 3 to overcome the lock tongue spring 31 to move.

[0047] In this embodiment, a lock tongue groove is provided on the main lock tongue, a plate is provided on the positioning plate, and the plate and the control rod are located in the lock tongue groove for action. Thus, the contact between the control rod and the plate during movement can be utilized to control the action of the main lock tongue, thereby realizing the linkage between the main lock tongue and the secondary lock tongue, and further improving the convenience of operation of the lock.

[0048] Combination Figures 1 to 9 As shown, the specific operation process of using the lock of this embodiment to lock the cabinet door 5 and the cabinet body 6 is as follows:

[0049] When the cabinet door 5 needs to be locked, the cabinet door 5 is closed. At this time, the distance between the cabinet door 5 and the cabinet body 6 is small, which triggers the sensor switch to send a locking signal, and the control motor 16 drives the worm 29 to rotate, and the meshing connection between the worm and the worm wheel drives the control disk 26 to rotate. The control pin 27 rotates with the rotation of the control disk 26. Figure 3 The telescopic frame 17 is moved to the left side through the telescopic slot 28. Figure 3 The left side of the figure moves, thereby driving the secondary lock tongue 4 to Figure 3 and Figure 5 As shown in the left direction, the control rod 10 moves with the secondary lock tongue 4. Under the action of the first vertical surface 23, the control rod 10 moves along the inclined track 11, so that the secondary lock tongue 4 overcomes the torsion spring 21 and swings outward, even if the secondary lock tongue 4 is Figure 5 The position status shown is Figure 7 The position shown in FIG. 1 is swung outward, and as the telescopic frame 17 continues to Figure 3 As shown in the figure, the control rod 10 moves from the inclined track 11 into the vertical track 12, so that the secondary lock tongue 4 overcomes the torsion spring 21 and continues to swing outward, while the control rod 10 moves in the lock tongue groove 36 at the same time, and as the telescopic frame 17 continues to move to the left side, the control rod 10 moves from the inclined track 11 into the vertical track 12, so that the secondary lock tongue 4 overcomes the torsion spring 21 and continues to swing outward. Figure 3The control rod 10 moves from the vertical track 12 into the first horizontal track 13, causing the secondary lock tongue 4 to swing outward to a fully swung out state, and maintain the fully swung out state to Figure 7 As shown in the left direction, the control rod 10 continues to move in the lock tongue groove 36, and as the telescopic frame 17 continues to move to the left Figure 3 When the control rod 10 reaches the intersection of the first horizontal track 13 and the arc track 14, that is, the end of the first horizontal track 13, the control panel 26 just completes a 180-degree rotation, and the telescopic frame 17 moves to Figure 3 The control rod 10 moves to the leftmost position as shown. After that, under the action of the torsion spring 21 and the continued rotation of the control disk 26, the control rod 10 moves along the arc track 14, and the secondary lock tongue 4 swings inward. When the control rod 10 moves to the second inclined surface 24, the control rod 10 overcomes the control spring 18 and moves upward to pass the second guide block 20, and under the action of the control spring 18, the control rod 10 enters the second horizontal track 15. At this time, the secondary lock tongue 4 enters the second lock groove 8, closes the cabinet door 5, and aligns the main lock tongue 3 with the first lock groove 7. At the same time, the control rod 10 in the lock tongue groove 36 contacts the plate 37, pushing the positioning plate 30 to overcome the spring leaf 33 to rotate, so that the positioning hook 32 disengages from the positioning groove 34, releases the limit on the main lock tongue 3, and makes the main lock tongue 3 pushed by the lock tongue spring 31 to extend out of the lock body 1 to the first lock groove 7, completing the locking.

[0050] When the cabinet door 5 needs to be opened, the correct password or fingerprint information is input on the touch screen 38 to send an unlocking signal, and the control motor 16 continues to rotate, driving the control disk 26 to continue to rotate, driving the telescopic frame 17 to move to the left. Figure 3 Move to the right as shown, pull the secondary lock tongue 4 Fig. 9 As shown in the figure, the control rod 10 moves to the right along the second horizontal track 15 due to the action of the second vertical surface 25 in the second guide block 20, and the control rod 10 in the lock tongue groove 36 is separated from the contact with the plate 37, and the main lock tongue 3 is pushed by the groove wall of the lock tongue groove 36 to overcome the lock tongue spring 31 to Figure 4 When the control rod 10 moves to the first guide block 19, it overcomes the control spring 18 by the first inclined surface 22 and moves upward to pass the first guide block 19, and enters the inclined track 11 under the restoring force of the control spring 18. At this time, the control plate 26 drives the control pin 27 to move to Figure 3 In the position shown, the main lock tongue 3 is disengaged from the first lock groove 7, and the secondary lock tongue 4 is disengaged from the second lock groove 8. Under the action of the positioning inclined surface 35 of the positioning hook 32, the positioning groove 34 on the main lock tongue 3 moves to be aligned with the positioning hook 32, and the positioning plate 30 rotates under the drive of the spring leaf 33, so that the positioning hook 32 re-enters the positioning groove 34, and the main lock tongue 3 is positioned in the open state, so that the lock is restored to the open state, and the unlocking operation is completed.

[0051] When the cabinet door 5 is in a half-closed state, since the distance between the cabinet door 5 and the cabinet body 6 is relatively close, the trigger sensor switch sends a locking signal, and the motor 16 drives the control disk 26 to rotate, driving the telescopic frame 17 to move to the left. Figure 3 As shown in the left direction, the control rod 10 moves along the inclined track 11 and the vertical track 12, driving the secondary lock tongue 4 to overcome the torsion spring 21 as shown in the left direction. Figure 7 As shown, the telescopic frame 17 is locked and moved to the left. When the control rod 10 moves along the first horizontal track 13 to the intersection of the first horizontal track 13 and the arc track 14, the control rod 10 drives the secondary lock tongue 4 to swing to the outermost position, that is, Figure 8 In the position state shown, the secondary lock tongue 4 is close to the second lock groove 8. Under the restoring force of the torsion spring 21, the secondary lock tongue 4 begins to rotate, and the control rod 10 moves along the arc track 14, so that the secondary lock tongue 4 enters the second lock groove 8, and the cabinet door 5 is pulled by the secondary lock tongue 4 to move relative to the cabinet body 6 and close. When the control rod 10 passes the second guide block 20 and enters the second horizontal track 15, the main lock tongue 3 is aligned with the first lock groove 7, and the contact between the control rod 10 and the plate 37 releases the limit on the main lock tongue 3, so that the main lock tongue 3 is driven by the lock tongue spring 31 to extend into the first lock groove 7, completing the locking, and realizing the locking operation of the cabinet door 5 in a half-closed state.

Claims

1. A lock, characterized in that: The invention comprises a lock body, a lock cap, a main lock tongue and a secondary lock tongue; the lock body is arranged on the movable side, and the lock cap is arranged on the fixed side; the lock cap is provided with a first lock groove and a second lock groove, the main lock tongue is arranged on the lock body and can move relative to the lock body and extend into the first lock groove, the secondary lock tongue is arranged on the lock body, the secondary lock tongue can swing in the inward and outward directions relative to the lock body and extend into the second lock groove and reciprocate in the direction away from the lock cap; when the secondary lock tongue extends into the second lock groove, the main lock tongue is aligned with the first lock groove; The lock is also provided with a lock body track, and a control rod is provided on the secondary lock tongue; the lock body track is a closed loop structure, and the control rod is slidably arranged in the lock body track and can move unidirectionally along the lock body track to drive the secondary lock tongue to swing relative to the lock body and reciprocate in a direction close to the lock cap; The lock body track consists of an inclined track, a vertical track, a first horizontal track, a curved track and a second horizontal track connected in sequence; the inclined track is arranged obliquely in a direction outward relative to the lock body, the vertical track is arranged vertically in a direction outward relative to the lock body, the first horizontal track and the second horizontal track are arranged in parallel and are both perpendicular to the vertical track, and the curved track is bent in a direction close to the lock cap.

2. The lock according to claim 1, characterized in that: The lock is also provided with a motor, a telescopic frame and a control spring. A first guide block is provided between the second horizontal track and the inclined track, and a second guide block is provided between the arc track and the second horizontal track. The motor is connected to the telescopic frame to drive the telescopic frame to reciprocate relative to the lock body in a direction parallel to the first horizontal track. The telescopic frame is connected to the secondary lock tongue through a torsion spring, and the torsion spring can drive the secondary lock tongue to swing inward relative to the lock body. The control spring is connected to the control rod to drive the control rod to extend into the lock body track. The side of the first guide block facing the second horizontal track is an inclined surface, and the side facing the inclined track is a vertical surface; the side of the second guide block facing the arc track is an inclined surface, and the side facing the second horizontal track is a vertical surface.

3. The lock according to claim 2, characterized in that: The lock is also provided with a control disk and a control pin, and a telescopic slot is provided on the telescopic frame; the control disk is rotatably arranged on the lock body, the control pin is eccentrically arranged on the control disk, the control pin is slidably arranged in the telescopic slot, and the telescopic slot is arranged in a direction perpendicular to the reciprocating movement of the telescopic frame relative to the lock body; the motor is connected to the control disk to drive the control disk to rotate; when the control pin moves to a position close to the lock cap, the control rod moves to the tail end of the first horizontal track.

4. The lock according to claim 3, characterized in that: The motor drives the control disk to rotate via a worm gear and a worm.

5. The lock according to claim 1, characterized in that: The lock is also provided with a positioning plate and a lock tongue spring; the positioning plate is located between the lock body and the main lock tongue to position the main lock tongue to be separated from the first lock groove; the lock tongue spring is located between the main lock tongue and the lock body to drive the main lock tongue to move in the direction of extending into the first lock groove.

6. The lock according to claim 5, characterized in that: One end of the positioning plate is rotatably arranged on the lock body, and a positioning hook is provided at the other end of the positioning plate. A spring sheet is provided between the positioning plate and the lock body, and a positioning groove is provided on the main lock tongue; the spring sheet can drive the positioning plate to rotate until the positioning hook extends into the positioning groove.

7. The lock according to claim 6, characterized in that: The positioning hook is provided with a positioning inclined surface; the positioning inclined surface faces the direction in which the locking tongue spring drives the main locking tongue to move.

8. The lock according to claim 7, characterized in that The main lock tongue is provided with a lock tongue groove, and the positioning plate is provided with a plate; the end of the control rod extends into the lock tongue groove, and the control rod can move relatively in the lock tongue groove and push the main lock tongue to overcome the lock tongue spring to move, and when the positioning hook is located in the positioning groove, the plate is located and extends into the lock tongue groove; when the control rod moves to the tail end position of the arc track, the control rod abuts against the plate to drive the positioning plate to overcome the spring leaf and drive the positioning hook to disengage from the positioning groove; when the control rod moves along the second horizontal track, the control rod disengages from the contact with the plate and pushes the main lock tongue to overcome the lock tongue spring to move.

Images