A hidden telescopic door lock

Abstract

The present invention discloses a hidden telescopic door lock, comprising a handle and a lock seat, wherein a transmission mechanism linked to the handle is arranged in the lock seat, the transmission mechanism comprising a motor fixed in the lock seat, a screw rod, a slide plate spirally driven by the screw rod, and a pair of connecting rod assemblies capable of realizing opening and closing, wherein the motor drives the screw rod to rotate, the slide plate is slidably installed in the lock seat, and the slide plate is in an intermediate position when the handle is stored, a pair of connecting rod assemblies are symmetrically arranged at one end of the slide plate opposite to the motor, and the connecting rod assemblies are linked to the slide plate, the connecting rod assemblies are connected between the lock seat and the handle, and the handle forms a gripping portion relative to one end of the connecting rod assembly, and a locking mechanism is arranged in the handle at a position corresponding to the slide plate, the present invention can realize the extension and retraction of the handle, and the handle locks the middle part of the handle in the stored state, at least fixes the middle part of the handle and one of the end parts, prevents the handle from being easily tilted out, and improves the anti-theft effect.

Description

Technical Field

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

[0002] A door lock is a commonly used door protection device to prevent illegal intrusion by outsiders. The handle of an existing door lock has only an unlocking function but no anti-locking function. In order to realize the anti-locking function of the door lock, it is necessary to design an anti-locking split ring under the handle, and set an anti-locking knob on the anti-locking split ring inside the door, and set a lock core on the anti-locking split ring inside the door; the lock tongue on the door lock body is locked by the anti-locking knob or a key, so that outsiders cannot unlock the door.

[0003] In the existing telescopic handle, one end of the handle is connected to the lock seat through a transmission mechanism. The transmission mechanism uses a connecting rod assembly to achieve telescoping. A keyhole can be set in the lock seat. After the handle is extended, the user can insert the key into the keyhole of the lock seat to unlock the lock cylinder. The door handle is used to cover the keyhole. However, only one end of the handle is connected and fixed to the lock seat through the transmission mechanism. Since the end of the handle connected to the transmission mechanism is relatively fragile, if the other end is pried, the handle connection will break, resulting in poor anti-theft effect. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings and deficiencies of the prior art and to provide a hidden telescopic door lock.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a hidden telescopic door lock, comprising a handle and a lock seat, a transmission mechanism linked to the handle is arranged in the lock seat, the transmission mechanism comprises a motor fixed in the lock seat, a screw rod, a slide plate spirally driven by the screw rod, and a pair of connecting rod assemblies capable of opening and closing, the motor drives the screw rod to rotate, the slide plate is slidably installed in the lock seat and is in an intermediate position when the handle is stored, a pair of connecting rod assemblies are symmetrically arranged at one end of the slide plate opposite to the motor and the connecting rod assembly is linked to the slide plate, the connecting rod assembly is connected between the lock seat and the handle, the handle forms a gripping portion relative to one end of the connecting rod assembly, a locking mechanism is arranged in the handle at a position corresponding to the slide plate, the locking mechanism comprises a driven gear rotatably connected to the handle and two driven gears located on both sides of the driven gear The rack plate is slidably connected to the handle, and an electromagnet for driving one of the rack plates is arranged in the handle, and the two rack plates move towards each other or away from each other, and a first rack portion is arranged on the side of each rack plate facing the driven gear, and the first rack portion is meshed with the driven gear, and a second rack portion is arranged on the side of the rack plate away from the driven gear, and through openings for the outer ends of the two second rack portions to pass through are arranged on both sides of the handle, and limiting openings corresponding to the positions of the through openings are arranged on the inner walls of both sides of the lock seat; a locking block is fixedly connected to the top of the right end of the slide plate, and an opening is arranged on the side of the locking block, and an eccentric rod passing through the handle is arranged on the driven gear, and a locking rod at the same height as the opening is arranged on the end of the eccentric rod, and the locking rod can be swung into the opening as the driven gear rotates, and the locking rod is longitudinally limited at the opening.

[0006] As a preferred technical solution of the present invention, a micro switch is provided on the inner side wall of the handle, and the micro switch contacts the locking block when the handle is in the storage state.

[0007] As a preferred technical solution of the present invention, the upper end surface of the locking block is a guiding inclined surface.

[0008] As a preferred technical solution of the present invention, the connecting rod assembly includes a first connecting rod and a second connecting rod arranged crosswise in an X shape, the first connecting rod and the second connecting rod are hinged in the middle to form a first hinge point, the lower end of the first connecting rod is hinged to the lock seat to form a second hinge point, the upper end of the first connecting rod is slidably installed on the handle through a first pin shaft, and the handle is provided with a first sliding groove for the first pin shaft to slide, the upper end of the second connecting rod is hinged to the handle, and the lower end of the second connecting rod is rotatably connected to the slide plate through a second pin shaft, and the lock seat is provided with a second sliding groove for the second pin shaft to slide.

[0009] As a preferred technical solution of the present invention, a rectangular cavity is provided in the lock seat, and the size of the handle is adapted to the shape of the rectangular cavity.

[0010] As a preferred technical solution of the present invention, when the handle is in the storage state, the outer end surface of the handle is lower than the outer end surface of the lock seat, or the outer end surface of the handle is flush with the outer end surface of the lock seat.

[0011] To sum up, the beneficial effects of the present invention are as follows: setting a hidden handle can avoid the handle being placed externally, preventing users from bumping or touching it, and reducing safety hazards. In addition, it can be used as a handle for anti-theft doors. Common keyholes are all external, and the keyhole can be set in the lock seat, and the handle is retracted to cover and hide the keyhole. The present application is not limited to the above two usage scenarios. The main purpose is to provide a retractable handle solution that can be freely combined and applied in different usage scenarios, but it is mainly used as an anti-theft handle. The handle locks the middle part of the handle in the storage state, and the end of the handle connected to the connecting rod assembly serves as the first anti-warping end, and the middle part of the handle serves as the second anti-warping end, so that at least the middle part of the handle and one of the end parts are connected to the lock seat. Even if the grip is pried, the other end of the handle will not be directly damaged, thereby avoiding the handle from being easily tilted out and improving the anti-theft effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the present invention;

[0013] Figure 2 It is a structural schematic diagram of the present invention without the lock seat;

[0014] Figure 3 It is a structural schematic diagram of the present invention without the lock seat;

[0015] Figure 4 It is a side structural schematic diagram of the present invention without the lock seat;

[0016] Figure 5 yes Figure 4 Enlarged view of part A;

[0017] Figure 6 It is a structural schematic diagram of the locking mechanism in the present invention.

[0018] Figure numerals: 1. handle; 2. lock seat; 3. transmission mechanism; 4. outer cover; 5. middle frame; 6. motor; 7. screw rod; 8. slide plate; 9. connecting rod assembly; 10. grip portion; 11. locking mechanism; 12. driven gear; 13. rack plate; 14. electromagnet; 15. first rack portion; 16. second rack portion; 17. through port; 18. locking block; 19. opening; 20. eccentric rod; 21. locking rod; 22. micro switch; 23. guide ramp; 24. first connecting rod; 25. second connecting rod; 26. first hinge point; 27. second hinge point; 28. first pin shaft; 29. ​​first slide groove; 30. second pin shaft; 31. second slide groove; 32. rectangular cavity. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments and drawings, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0020] The specific embodiments of the present invention are described below with reference to the accompanying drawings.

[0021] like Figures 1 to 6 A hidden telescopic door lock shown in the figure includes a handle 1 and a lock base 2, the handle 1 includes an outer cover 4 and a middle frame 5, a transmission mechanism 3 linked to the handle 1 is arranged in the lock base 2, the transmission mechanism 3 includes a motor 6 fixed in the lock base 2, a screw rod 7, a slide plate 8 spirally driven with the screw rod 7, and a pair of connecting rod assemblies 9 capable of opening and closing, the motor 6 drives the screw rod 7 to rotate, the slide plate 8 is slidably installed in the lock base 2 and the slide plate 8 is in the middle position when the handle 1 is stored, a pair of connecting rod assemblies 9 are symmetrically arranged at one end of the slide plate 8 relative to the motor 6 and the connecting rod assembly 9 is linked to the slide plate 8, the connecting rod assembly 9 is connected between the lock base 2 and the handle 1, the handle 1 forms a gripping portion 10 at one end of the connecting rod assembly 9, a locking mechanism 11 is arranged in the handle 1 at a position corresponding to the slide plate 8, and the locking mechanism 11 includes a locking mechanism 11 rotatably connected to the handle The handle 1 comprises a driven gear 12 and two rack plates 13 located on both sides of the driven gear 12, the rack plates 13 are slidably connected to the grip 1 (a positioning shaft can be provided on the rack plates 13 to cooperate with the moving groove of the grip 1, which is not shown in the figure), an electromagnet 14 is provided in the grip 1 to drive one of the rack plates 13 to move, and the electromagnet 14 is a commercially available push-pull electromagnet 14, the two rack plates 13 move towards each other or move away from each other, each of the rack plates 13 is provided with a first rack portion 15 on the side facing the driven gear 12, and the first rack portion 15 is meshed with the driven gear 12, the rack plate 13 is provided with a second rack portion 16 on the side away from the driven gear 12, and through openings 17 for the outer ends of the two second rack portions 16 to pass through are provided on both sides of the handle 1, and limit openings corresponding to the positions of the through openings 17 are provided on the inner walls of both sides of the lock seat 2.

[0022] The present invention sets a hidden handle, which can avoid the handle 1 being placed externally, preventing users from bumping or touching it, reducing safety hazards, and can also be used as a handle for anti-theft doors. Common keyholes are all placed externally, and the keyhole and the lock core can be set in the lock seat 2. The handle 1 is telescopic to cover and hide the keyhole. After the handle 1 is opened a certain distance, the key can be inserted to unlock the lock core. The structure of the lock core and the keyhole is the existing technology (not shown in the figure), which is the same as the conventional structure on the market. The present application is to provide a structure of a hidden telescopic door lock, so the lock core and the keyhole structure are not specifically described. In addition, the present application is not limited to the above two usage scenarios. The main purpose is to provide a retractable handle solution that can be freely combined and applied in different usage scenarios, but it is mainly used as an anti-theft handle. The handle 1 locks the middle part of the handle 1 in the storage state, and the end of the handle 1 connected to the connecting rod assembly 9 serves as the first anti-warping end, and the middle part of the handle 1 serves as the second anti-warping end. At least the middle part of the handle 1 and one of the ends are connected to the lock seat 2. Even if the grip 10 is pried, the other end of the handle 1 will not be directly damaged, thereby preventing the handle 1 from being easily tilted out and improving the anti-theft effect.

[0023] A locking block 18 is fixedly connected to the top of the right end of the slide plate 8, and an opening 19 is provided on the side of the locking block 18. An eccentric rod 20 passing through the handle 1 is provided on the driven gear 12, and a locking rod 21 at the end of the eccentric rod 20 is provided at the same height as the opening 19. The locking rod 21 can be swung into the opening 19 as the driven gear 12 rotates, and the locking rod 21 is longitudinally limited to the opening 19. A movable opening (not shown in the figure) is provided on the lower end surface of the handle 1 at a position corresponding to the driven gear 12. The size of the movable opening is larger than the driven gear 12, and the eccentric rod 20 will not be interfered when rotating.

[0024] A micro switch 22 is provided on the inner wall of the handle 1. When the handle 1 is in the storage state, the micro switch 22 contacts the locking block 18. When the handle 1 is completely stored in the lock seat 2, the micro switch 22 contacts the guide slope 23 on the upper end of the locking block 18. At this time, the micro switch 22 is triggered to generate a locking signal, and the push rod of the push-pull electromagnet 14 extends to push one of the rack plates 13 to move. The two rack plates 13 move in opposite directions and the outer end of the rack plate 13 extends through the limit opening of the lock seat 2. The driven gear 12 drives the eccentric rod 20 to rotate, and the locking rod 21 at the outer end of the eccentric rod 20 rotates into the opening 19 of the locking block 18, so that The two sides and the bottom of the handle 1 are locked respectively to achieve three-sided locking. Since the lock seat 2 and the handle 1 are clearance-matched and the edge gap is small, it not only has an anti-tilting effect, but also the middle part of the handle 1 is locked on three sides, and the handle 1 will not be easily tilted out, thereby improving the overall anti-theft performance. In this embodiment, the micro switch 22 and the electromagnet 14 are electrically connected to the PCB board (not shown in the figure). How to implement the control circuit is not an improvement point of the present application. This is a prior art and is not elaborated in detail. A delay module can be installed, which is commercially available. The locking action starts a few seconds after the micro switch 22 contacts the locking block 18.

[0025] How to control the start of the motor 6 is not an improvement point of the present application. The control method is the existing technology. A PCB board can be set in the lock base 2, and the motor 6 is electrically connected to the PCB board. A fingerprint module is set on the handle 1. After the fingerprint is unlocked, the motor 6 is started to separate the handle 1 from the lock base 2, or a connection is established between the mobile phone APP and the communication module of the PCB board to remotely control the motor. There are different forms of control methods. The above are existing technologies, so they are not elaborated in detail.

[0026] The connecting rod assembly 9 includes a first connecting rod 24 and a second connecting rod 25 which are arranged crosswise in an X shape. The first connecting rod 24 and the second connecting rod 25 are hinged in the middle to form a first hinge point 26. The lower end of the first connecting rod 24 is hinged to the lock seat 2 to form a second hinge point 27. The upper end of the first connecting rod 24 is slidably installed on the handle 1 through a first pin shaft 28. The handle 1 is provided with a first sliding groove 29 for the first pin shaft 28 to slide. The upper end of the second connecting rod 25 is hinged to the handle 1, and the lower end of the second connecting rod 25 is rotatably connected to the slide plate 8 through a second pin shaft 30. The lock seat 2 is provided with a second sliding groove 31 for the second pin shaft 30 to slide.

[0027] A rectangular cavity 32 is provided in the lock seat 2. The size of the handle 1 matches the shape of the rectangular cavity 32. The gap between the two is smaller than the thickness of the screwdriver, thereby improving the anti-theft effect.

[0028] When the handle 1 is in the storage state, the outer end surface of the handle 1 is lower than the outer end surface of the lock seat 2, or the outer end surface of the handle 1 is flush with the outer end surface of the lock seat 2.

[0029] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit 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, and the scope of the present invention to be protected is defined by the attached claims and their equivalents.

Claims

1. A hidden telescopic door lock, comprising a handle (1) and a lock seat (2), characterized in that: The lock seat (2) is provided with a transmission mechanism (3) linked with the handle (1), the transmission mechanism (3) comprises a motor (6) fixed in the lock seat (2), a screw rod (7), a slide plate (8) screw-driven with the screw rod (7), and a pair of connecting rod assemblies (9) capable of opening and closing, the motor (6) drives the screw rod (7) to rotate, the slide plate (8) is slidably installed in the lock seat (2) and the slide plate (8) is in a middle position when the handle (1) is stored, a pair of connecting rod assemblies (9) are symmetrically arranged at one end of the slide plate (8) relative to the motor (6) and the connecting rod assembly (9) is linked with the slide plate (8), the connecting rod assembly (9) is connected between the lock seat (2) and the handle (1), the handle (1) forms a gripping portion (10) at one end of the connecting rod assembly (9), a locking mechanism (11) is arranged in the handle (1) at a position corresponding to the slide plate (8), and the lock seat (2) is provided with a locking mechanism (11) at a position corresponding to the slide plate (8). The tightening mechanism (11) comprises a driven gear (12) rotatably connected to the handle (1) and two rack plates (13) located on both sides of the driven gear (12), the rack plate (13) being slidably connected to the handle (1), an electromagnet (14) for driving one of the rack plates (13) to move is arranged in the handle (1), the two rack plates (13) move towards each other or move away from each other, each rack plate (13) is provided with a first rack portion (15) on the side facing the driven gear (12), and the first rack portion (15) and the driven gear (12) are meshed, the rack plate (13) is provided with a second rack portion (16) on the side away from the driven gear (12), through openings (17) for the outer ends of the two second rack portions (16) to pass through are arranged on both sides of the handle (1), and the inner walls on both sides of the lock seat (2) are provided with limit openings corresponding to the positions of the through openings (17); A locking block (18) is fixedly connected to the top of the right end of the slide plate (8), and an opening (19) is arranged on the side of the locking block (18). An eccentric rod (20) passing through the handle (1) is arranged on the driven gear (12), and a locking rod (21) at the same height as the opening (19) is arranged at the end of the eccentric rod (20). The locking rod (21) can be swung into the opening (19) as the driven gear (12) rotates, and the locking rod (21) is longitudinally limited at the opening (19).

2. The hidden telescopic door lock according to claim 1, characterized in that: A micro switch (22) is provided on the inner side wall of the handle (1), and when the handle (1) is in the storage state, the micro switch (22) contacts the locking block (18).

3. The hidden telescopic door lock according to claim 2, characterized in that: The upper end surface of the locking block (18) is a guiding inclined surface (23).

4. The hidden telescopic door lock according to claim 1, characterized in that: The connecting rod assembly (9) comprises a first connecting rod (24) and a second connecting rod (25) which are arranged crosswise in an X shape, wherein the middle parts of the first connecting rod (24) and the second connecting rod (25) are hinged to form a first hinge point (26), the lower end of the first connecting rod (24) is hinged to the lock seat (2) to form a second hinge point (27), the upper end of the first connecting rod (24) is slidably mounted on the handle (1) via a first pin shaft (28), the handle (1) is provided with a first sliding groove (29) for the first pin shaft (28) to slide, the upper end of the second connecting rod (25) is hinged to the handle (1), the lower end of the second connecting rod (25) is rotatably connected to the slide plate (8) via a second pin shaft (30), and the lock seat (2) is provided with a second sliding groove (31) for the second pin shaft (30) to slide.

5. The hidden telescopic door lock according to claim 1, characterized in that: A rectangular cavity (32) is provided in the lock seat (2), and the size of the handle (1) is adapted to the shape of the rectangular cavity (32).

6. The hidden telescopic door lock according to claim 1 or 5, characterized in that: When the handle (1) is in the retracted state, the outer end surface of the handle (1) is lower than the outer end surface of the lock seat (2), or the outer end surface of the handle (1) is flush with the outer end surface of the lock seat (2).

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