A door lock front-rear linkage device and door lock thereof

Abstract

The utility model discloses a door lock front and back linkage device and door lock, and the device includes the front, rear rotating part and the first, second flexible traction member that are curved into U type for driving bolt movement, is equipped with the door body clamping groove between the front, rear rotating part, and the first, second branch point of front is equipped with around its rotating axle center on the front rotating part, and the first, second branch point of back is equipped with around its rotating axle center on the rear rotating part, and the both ends of first flexible traction member are respectively with the first, first branch point of back rotation cooperation, and the both ends of second flexible traction member are respectively with the second, second branch point of back rotation cooperation, and the front, rear rotating part passes through first, second flexible traction member and is mutually reverse rotary linkage, wherein a rotating part is also with drive rotating part transmission connection, and drive rotating part and another rotating part same direction rotation. The utility model discloses a rotating piece rotates two flexible traction members mutual reverse movement, so that the upper and lower sides of another rotating piece produce torsion simultaneously, realize another rotating piece smooth rotation movement.

Description

Technical Field

[0001] This utility model relates to a door lock, and more particularly to a door lock front and rear linkage device and the door lock thereof. Background Technology

[0002] Chinese Patent No. CN 202421992042.3, published on June 24, 2025, discloses an electronic lock for a glass door, including a clamping plate and an outer lock body and an inner lock body disposed on opposite sides of the clamping plate. The outer lock body contains a first toothed plate movable along the width direction of the clamping plate, and the inner lock body contains a second toothed plate movable along the width direction of the clamping plate. The first and second toothed plates are connected by a steel strip, and the movement of the first toothed plate can drive the movement of the second toothed plate. In this structure, the toothed plates move in one direction due to traction by the steel strip, and in the other direction due to pushing by the steel strip. When the power source drives the steel strip to traction, the force generated by the steel strip is relatively stable. However, when the steel strip pushes, it arches and deforms, generating a component force in other directions. Therefore, the force acting on the toothed plates decreases, leading to unstable sliding of the toothed plates. Furthermore, the deformation of the steel strip easily presses against the wall surface at the location it passes through, creating resistance. Furthermore, if the steel strip is stretched too tight, although it can increase its rigidity, it will also cause the teeth to bite together, resulting in greater rotational resistance. Utility Model Content

[0003] One objective of this utility model is to provide a door lock front and rear linkage device that is structurally reasonable, moves smoothly, saves effort, and works reliably.

[0004] One objective of this utility model is achieved as follows: A door lock front-to-back linkage device includes a front rotating component and a rear rotating component for driving the bolt movement. The front rotating component and the rear rotating component are spaced apart and have a door clamping groove. It also includes a first flexible traction component and a second flexible traction component bent into a U-shape. The front rotating component has a front first fulcrum and a front second fulcrum around its rotation axis. The rear rotating component has a rear first fulcrum and a rear second fulcrum around its rotation axis. The two ends of the first flexible traction component are rotatably engaged with the front first fulcrum and the rear first fulcrum, respectively. The two ends of the second flexible traction component are rotatably engaged with the front second fulcrum and the rear second fulcrum, respectively. The front rotating component and the rear rotating component are linked by rotating in opposite directions through the first flexible traction component and the second flexible traction component. One of the rotating components is also connected to a driving rotating component, and the driving rotating component rotates in the same direction as the other rotating component.

[0005] The objective of this utility model can also be achieved by the following technical measures: As a more specific embodiment, both the first flexible traction member and the second flexible traction member are thin steel strips, thin rubber strips, or steel wires; the first flexible traction member and the second flexible traction member are arranged in parallel to each other.

[0006] As a further embodiment, the first and second front fulcrums are evenly distributed around the rotation axis of the front rotating component and are vertically distributed; the first and second rear fulcrums are evenly distributed around the rotation axis of the rear rotating component and are vertically distributed; the driving rotating component is a gear, and the rotating component connected to the driving rotating component has an arc-shaped tooth surface corresponding to the gear, which meshes with the gear.

[0007] As a further embodiment, the front rotating member and the rear rotating member are respectively rotatably mounted on the front support plate and the rear support plate, and a baffle is provided between the front support plate and the rear support plate. The front support plate, the rear support plate and the baffle together form the door clamping groove.

[0008] As a further embodiment, a wear-resistant block is also provided in the door clamping groove. The wear-resistant block is close to the inner corner position of the first flexible traction member and the second flexible traction member. A limiting channel is provided between the wear-resistant block and the baffle, the front support plate, and the rear support plate at the position where the first flexible traction member and the second flexible traction member pass through. The first flexible traction member and the second flexible traction member are in clearance fit with the inner wall of the limiting channel.

[0009] As a further embodiment, the front and rear ends of the baffle are respectively connected to the front support plate and the rear support plate, and the wear-resistant block is connected to the front support plate and the rear support plate, or the wear-resistant block is connected to the baffle; or the front support plate and the rear support plate are connected to the baffle through the wear-resistant block.

[0010] As a further embodiment, the front support plate is provided with a first arc-shaped guide groove and a second arc-shaped guide groove corresponding to the movement trajectories of the first and second front fulcrums, respectively; the rear support plate is provided with a first arc-shaped guide groove and a second arc-shaped guide groove corresponding to the movement trajectories of the first and second rear fulcrums, respectively; the first flexible traction member has round holes at both ends, which are rotatably engaged with the first and second front fulcrums, respectively; the second flexible traction member has round holes at both ends, which are rotatably engaged with the second front fulcrums, respectively.

[0011] As a further embodiment, the front rotating member is provided with a locking screw, which is connected to the front support plate; or, the rear rotating member is provided with a locking screw, which is connected to the rear support plate.

[0012] Another objective of this invention is to provide a door lock with a reasonable structure that is suitable for use on glass doors without openings.

[0013] Another objective of this utility model is achieved as follows: A door lock includes a front panel and a rear panel, and a front-to-back linkage device. A front rotating component and a rear rotating component of the linkage device are respectively disposed within the front panel and the rear panel. The latch is disposed within the rear panel. A latch transmission mechanism is also provided within the rear panel and is operatively connected to the latch. A front lock cylinder is also provided on the front panel. The rear rotating component is operatively connected to the latch transmission mechanism via a driving component, and the front rotating component is operatively connected to the front lock cylinder. Alternatively, the rear rotating component is operatively connected to the latch transmission mechanism, and the front rotating component is operatively connected to the front lock cylinder via a driving component.

[0014] The objective of this utility model can also be achieved by the following technical measures: As a more specific embodiment, the front panel is also provided with an electronic identification module, and the rear panel is provided with an electronically controlled unlocking drive mechanism, an unlocking control circuit and a mechanical unlocking mechanism. The electronic identification module and the electronically controlled unlocking drive mechanism are electrically connected to the unlocking control circuit, and the electronically controlled unlocking drive mechanism and the mechanical unlocking mechanism are connected to the lock tongue transmission mechanism.

[0015] As a further option, the mechanical unlocking mechanism is a rear lock cylinder or a knob.

[0016] The beneficial effects of this utility model are as follows: The front and rear rotating parts of this utility model are linked by flexible traction parts. The flexible traction parts can bypass the door body, thus eliminating the trouble of opening holes in the door body, which is especially suitable for glass doors. Moreover, there are two flexible traction parts, which move in a reciprocating motion. Therefore, when one rotating part rotates, the two flexible traction parts move in opposite directions, so that the upper and lower sides of the other rotating part generate torque at the same time, realizing the smooth rotation of the other rotating part, thereby completing the locking and unlocking action. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of an embodiment of the door lock front and rear linkage device of this utility model.

[0018] Figure 2 for Figure 1 Another structural diagram from a different angle.

[0019] Figure 3 This is an exploded structural diagram of the door lock front and rear linkage device and its cooperation with the carrier in this utility model.

[0020] Figure 4 This is a partial cross-sectional structural diagram of the door lock front and rear linkage device in this utility model after it is combined with the carrier.

[0021] Figure 5 This is a schematic diagram of the front and rear linkage device of the door lock in this utility model after it is combined with the carrier at one angle.

[0022] Figure 6 for Figure 5 Another structural diagram from a different angle.

[0023] Figure 7 This is an exploded structural diagram of an embodiment of the door lock of this utility model. Figure 8 for Figure 7 Another structural diagram from a different angle.

[0024] Figure 9 This is a three-dimensional structural diagram of the door lock in the present invention in the engaged state (slide plate open).

[0025] Figure 10 This is a schematic diagram of the main structure of the door lock in this utility model.

[0026] Figure 11 for Figure 10 Schematic diagram of the EE cross-section structure.

[0027] Figure 12 for Figure 10 A schematic diagram of the FF cross-sectional structure.

[0028] Figure 13 This is a schematic diagram of the structure of the door lock after the front and rear panels are opened.

[0029] Figure 14 for Figure 13 Another structural diagram from a different angle.

[0030] Figure 15 for Figure 13 Another implementation diagram. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments: See Figures 1-6 As shown, a door lock front-to-back linkage device includes a front rotating member 1 and a rear rotating member 2 for driving the bolt 20 to move. The front rotating member 1 and the rear rotating member 2 are spaced apart and are provided with a door body clamping groove D. It also includes a first flexible traction member 3 and a second flexible traction member 4 bent into a U-shape. The front rotating member 1 has a front first fulcrum 11 and a front second fulcrum 12 around its rotation axis. The rear rotating member 2 has a rear first fulcrum 22 and a rear second fulcrum 23 around its rotation axis. The two ends of the first flexible traction member 3 are rotatably engaged with the front first fulcrum 11 and the rear first fulcrum 22, respectively. The two ends of the second flexible traction member 4 are rotatably engaged with the front second fulcrum 12 and the rear second fulcrum 23, respectively. The front rotating member 1 and the rear rotating member 2 are linked by rotating in opposite directions through the first flexible traction member 3 and the second flexible traction member 4. The rear rotating member 2 is also connected to a driving rotating member 5, which rotates in the same direction as the front rotating member 1.

[0032] Combination Figure 1 As shown, the rotation axis of the front rotating component 1 is A, the rotation axis of the rear rotating component 2 is B, and the rotation axis of the driving rotating component 5 is C. A and C rotate in the same direction.

[0033] The first flexible traction member 3 and the second flexible traction member 4 are both thin steel strips; the first flexible traction member 3 and the second flexible traction member 4 are arranged in parallel to each other.

[0034] The first front fulcrum 11 and the second front fulcrum 12 are evenly distributed around the rotation axis of the front rotating member 1 and are vertically distributed; the first rear fulcrum 22 and the second rear fulcrum 23 are evenly distributed around the rotation axis of the rear rotating member 2 and are vertically distributed; the driving rotating member 5 is a gear, and the gear corresponding to the rear rotating member 2, which is connected to the driving rotating member 5, has an arc-shaped tooth surface 21, which meshes with the gear. In this embodiment, the front rotating member 1 also has an arc-shaped tooth surface, but the arc-shaped tooth surface does not play a role in this embodiment; it is only because the front rotating member 1 and the rear rotating member 2 adopt the same structure.

[0035] The front rotating member 1 and the rear rotating member 2 are respectively rotatably mounted on the front support plate 71 and the rear support plate 72. A baffle 74 is also provided between the front support plate 71 and the rear support plate 72. The front support plate 71, the rear support plate 72 and the baffle 74 together form the door clamping groove D.

[0036] The door groove D is also provided with a wear-resistant block 6. The wear-resistant block 6 is close to the inner corner position of the first flexible traction member 3 and the second flexible traction member 4. The wear-resistant block 6 and the baffle 74, the front support plate 71, and the rear support plate 72 are provided with a limiting channel H at the position where the first flexible traction member 3 and the second flexible traction member 4 pass through. The first flexible traction member 3 and the second flexible traction member 4 are clearance-fitted with the inner wall of the limiting channel H.

[0037] The front and rear ends of the baffle 74 are connected to the front support plate 71 and the rear support plate 72, respectively, and the wear-resistant block 6 is connected to the front support plate 71 and the rear support plate 72. The wear-resistant block 6 has three grooves from top to bottom, namely the first sliding groove 61, the wire-passing groove 63 and the second sliding groove 62. The first flexible traction member 3 and the second flexible traction member 4 pass around the first sliding groove 61 and the second sliding groove 62, respectively. The front support plate 71 and the rear support plate 72 are both provided with wire-passing holes 73 corresponding to the wire-passing groove 63. When the door lock front and rear linkage device is used in an electronic lock, the wire can pass through the wire-passing groove 63 and the wire-passing hole 73 to the front and rear sides.

[0038] Combination Figures 7 to 14As shown, a door lock includes a front panel 8, a rear panel 9, and a front-to-back linkage device. The front rotating component 1 and the rear rotating component 2 of the front-to-back linkage device are respectively disposed in the front panel 8 and the rear panel 9. The latch 20 is disposed in the rear panel 9. The rear panel 9 is also provided with a latch transmission mechanism 95, which is connected to the latch 20. The front panel 8 is also provided with a front lock cylinder 84. The rear rotating component 2 is connected to the latch transmission mechanism 95 through a driving rotating component 5, and the front rotating component 1 is connected to the front lock cylinder 84.

[0039] The front lock core 84 is connected to the front rotating component 1 via a gear transmission pair.

[0040] The front panel 8 is equipped with an electronic identification module, and the rear panel 9 is equipped with an electronically controlled unlocking drive mechanism 96, an unlocking control circuit 93, and a mechanical unlocking mechanism. The electronic identification module and the electronically controlled unlocking drive mechanism 96 are electrically connected to the unlocking control circuit 93, and the electronically controlled unlocking drive mechanism 96 and the mechanical unlocking mechanism are drively connected to the bolt transmission mechanism 95. The electronic identification module includes a keypad module 81 and a front fingerprint recognition module 82. The electronically controlled unlocking drive mechanism 96 is a reduction gearbox connected to a motor. The rear panel 9 is also equipped with a battery box 94, which supplies power to the unlocking control circuit 93.

[0041] The mechanical unlocking mechanism is a rear lock cylinder 91. When the rear panel 9 is equipped with the rear lock cylinder 91, it is also equipped with a rear fingerprint recognition module 92, which is electrically connected to the unlocking control circuit 93. Alternatively, see Figure 15 As shown, the mechanical unlocking mechanism is a knob 97. The rear lock cylinder 91 or the knob 97 is connected to the reduction gearbox and the lock tongue transmission mechanism 95 respectively via the rear gear 98.

[0042] The rear rotating component 2 is provided with a locking screw 75, which is connected to the rear support plate 72. The locking screw 75 is mainly used to solve the problem of increased installation difficulty caused by the rotation of the rotating component (including gears) when assembling the front panel. By tightening the locking screw 75, the rotation of the rotating component can be prevented. When installing the rear panel, it can be removed.

[0043] The front panel 8 and the rear panel 9 are respectively mounted on the front support plate 71 and the rear support plate 72. Anti-slip pads are provided on opposite sides of the front support plate 71 and the rear support plate 72, and the anti-slip pads can form good contact with the glass door.

[0044] It also includes a lock seat assembly 10, which includes a front seat 101 and a rear seat 102. A second door body clamping groove E is formed between the front seat 101 and the rear seat 102. The rear seat 102 has a lock hole 103 corresponding to the lock tongue 20. In this utility model, the lock tongue 20 is a hook lock, which extends hooks from both the upper and lower sides after being extended to hook the upper and lower sides of the lock hole 103. The lock tongue 20, the lock tongue transmission mechanism 95, the lock seat assembly 10, and the anti-slip pad are all existing technologies, and their structures will not be described in detail here.

[0045] The above describes the preferred embodiments of this utility model, illustrating and describing its basic principles, main features, and advantages. 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 without departing from the spirit and scope of this utility model, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A door lock front-to-back linkage device, comprising a front rotating member (1) and a rear rotating member (2) for driving the bolt (20) to move, the front rotating member (1) and the rear rotating member (2) being spaced apart and having a door clamping groove (D), characterized in that: It also includes a first flexible traction member (3) and a second flexible traction member (4) bent into a U-shape. The front rotating member (1) is provided with a first front fulcrum (11) and a second front fulcrum (12) around its rotation axis. The rear rotating member (2) is provided with a first rear fulcrum (22) and a second rear fulcrum (23) around its rotation axis. The two ends of the first flexible traction member (3) are respectively rotatably engaged with the first front fulcrum (11) and the first rear fulcrum (22). The two ends of the second flexible traction member (4) are respectively rotatably engaged with the second front fulcrum (12) and the second rear fulcrum (23). The front rotating member (1) and the rear rotating member (2) rotate in opposite directions through the first flexible traction member (3) and the second flexible traction member (4). One of the rotating members is also connected to the driving rotating member (5) for transmission. The driving rotating member (5) rotates in the same direction as the other rotating member.

2. The door lock front and rear linkage device according to claim 1, characterized in that: The first flexible traction member (3) and the second flexible traction member (4) are both thin steel strips, thin rubber strips or steel wires; the first flexible traction member (3) and the second flexible traction member (4) are arranged in parallel to each other.

3. The door lock front and rear linkage device according to claim 1, characterized in that: The first front fulcrum (11) and the second front fulcrum (12) are evenly distributed around the rotation axis of the front rotating member (1) and are arranged vertically; the first rear fulcrum (22) and the second rear fulcrum (23) are evenly distributed around the rotation axis of the rear rotating member (2) and are arranged vertically; the driving rotating member (5) is a gear, and the rotating member connected to the driving rotating member (5) has an arc-shaped tooth surface (21) corresponding to the gear, and the arc-shaped tooth surface (21) meshes with the gear.

4. The door lock front and rear linkage device according to claim 1, characterized in that: The front rotating member (1) and the rear rotating member (2) are respectively rotatably mounted on the front support plate (71) and the rear support plate (72). A baffle (74) is also provided between the front support plate (71) and the rear support plate (72). The front support plate (71), the rear support plate (72) and the baffle (74) together form the door clamping groove (D).

5. The door lock front and rear linkage device according to claim 4, characterized in that: The door clamping groove (D) is also provided with a wear-resistant block (6). The wear-resistant block (6) is close to the inner corner position of the first flexible traction member (3) and the second flexible traction member (4). The wear-resistant block (6) is provided with a limiting channel (H) at the position where the first flexible traction member (3) and the second flexible traction member (4) pass through, corresponding to the position where the wear-resistant block (6) and the baffle (74), the front support plate (71), and the rear support plate (72) are provided. The first flexible traction member (3) and the second flexible traction member (4) are fitted with the inner wall of the limiting channel (H) with a clearance.

6. The door lock front and rear linkage device according to claim 4, characterized in that: The front and rear ends of the baffle (74) are respectively connected to the front support plate (71) and the rear support plate (72), and the wear-resistant block (6) is connected to the front support plate (71) and the rear support plate (72), or the wear-resistant block (6) is connected to the baffle (74); or the front support plate (71) and the rear support plate (72) are connected to the baffle (74) through the wear-resistant block (6).

7. The door lock front and rear linkage device according to claim 4, characterized in that: The front rotating part (1) is provided with a locking screw (75), which is connected to the front support plate (71). Alternatively, the rear rotating part (2) is provided with a locking screw (75), which is connected to the rear support plate (72).

8. A door lock, comprising a front panel (8) and a rear panel (9), characterized in that: The door lock front and rear linkage device includes any one of claims 1-7, wherein the front rotating part (1) and the rear rotating part (2) of the front and rear linkage device are respectively disposed in the front panel (8) and the rear panel (9), and the lock tongue (20) is disposed in the rear panel (9); the rear panel (9) is also provided with a lock tongue transmission mechanism (95), and the lock tongue transmission mechanism (95) is connected to the lock tongue (20); the front panel (8) is also provided with a front lock cylinder (84); the rear rotating part (2) is connected to the lock tongue transmission mechanism (95) through a driving rotating part (5), and the front rotating part (1) is connected to the front lock cylinder (84), or the rear rotating part (2) is connected to the lock tongue transmission mechanism (95), and the front rotating part (1) is connected to the front lock cylinder (84) through a driving rotating part (5).

9. The door lock according to claim 8, characterized in that: The front panel (8) is also provided with an electronic identification module, and the rear panel (9) is provided with an electronically controlled unlocking drive mechanism (96), an unlocking control circuit and a mechanical unlocking mechanism. The electronic identification module and the electronically controlled unlocking drive mechanism (96) are electrically connected to the unlocking control circuit, and the electronically controlled unlocking drive mechanism (96) and the mechanical unlocking mechanism are connected to the lock tongue transmission mechanism (95).

10. The door lock according to claim 9, characterized in that: The mechanical unlocking mechanism is a rear lock cylinder (91) or a knob (97).

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