A mechanical lock

Abstract

The present invention discloses a mechanical lock, which includes an outer handle disposed on the outer side of the door, a lock core disposed inside the door with one end connected to the outer handle, and an inner handle disposed on the inner side of the door and connected to the other end of the lock core. The mechanical lock further includes a movable seat, which is movably disposed inside the inner handle and has one end abutting against the square core on the lock core; a switch, which is movably disposed on the inner handle and connected to the other end of the movable seat; and a clutch assembly, which is disposed inside the outer handle and connected to the square core. Pushing the switch can drive the square core to move away from the outer handle, so that the clutch assembly is locked with the outer handle. Rotating the outer handle can drive the square core and the clutch assembly to rotate to unlock the lock core; or it can drive the square core to move towards the outer handle, so that the clutch assembly is unlocked from the outer handle, causing the outer handle to rotate freely. Through the above structure, it can be avoided that the user still rotates the outer handle forcefully outside the door when the insurance function is turned on, which may damage the door lock structure, and the user experience is improved.

Description

Technical Field

[0001] The present invention relates to a mechanical lock. Background Art

[0002] In existing household mechanical door locks, generally an outer handle and an inner handle are provided, allowing users to enter from outside the door or go out from inside the door, and an insurance switch is also provided. That is, after the insurance switch is turned on, the outer handle or the inner handle cannot be rotated to open the door, and the door can only be opened after the insurance switch is turned off. In the process of applying this mechanical lock with an insurance switch, it may occur that the user does not know that the insurance switch has been enabled and continues to forcefully rotate the outer handle, resulting in damage to the internal structure of the door lock. Therefore, there is a need for a mechanical lock to solve the above problems. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. For this purpose, the present invention provides a mechanical lock.

[0004] One embodiment of the present invention adopts the following technical solution to solve its technical problems: A mechanical lock includes an outer handle disposed on the outer side of the door, a lock core disposed inside the door and having one end connected to the outer handle, and an inner handle disposed inside the door and connected to the other end of the lock core. It further includes:

[0005] A movable seat, movably disposed inside the inner handle and having one end abutting against the square core on the lock core;

[0006] A switch, movably disposed on the inner handle and connected to the other end of the movable seat;

[0007] A clutch assembly, disposed inside the outer handle and connected to the square core. Pushing the switch can drive the square core to move away from the outer handle, so that the clutch assembly is locked with the outer handle. Rotating the outer handle can drive the square core and the clutch assembly to rotate to unlock the lock core; or it can drive the square core to move towards the outer handle, so that the clutch assembly is unlocked from the outer handle, causing the outer handle to rotate freely.

[0008] Further, the clutch assembly includes:

[0009] A clutch, which is provided with a through groove penetrating along the movement direction of the square core, and several first clutch grooves are provided on the clutch along its circumferential direction and are simultaneously communicated with the outside and the through groove;

[0010] A front square core, movably disposed in the through groove, having one end connected to the square core and the other end connected to the outer handle through a return spring. Several second clutch grooves are provided on the front square core;

[0011] Several third clutch grooves, disposed on the inner side wall of the outer handle;

[0012] A plurality of clutch pins that can be completely accommodated in the first clutch groove and the second clutch groove to enable the outer handle to rotate freely, or can be driven by the front core to at least partially extend into the third clutch groove, so that the outer handle can drive the square core and the clutch assembly to rotate to unlock the lock core.

[0013] Further, the clutch pins are set as balls.

[0014] Further, there are 4 first clutch grooves, second clutch grooves, third clutch grooves and clutch pins respectively, and they are evenly spaced.

[0015] Further, there is a contact groove inclined towards the lock core on the lock core or the rear cover of the inner handle, and one end of the movable seat can contact with the contact groove when pushing the square core towards the outer handle.

[0016] Further, the contact groove is set as a V-shaped groove with the open end facing the inner handle.

[0017] The beneficial effects of the present invention: A mechanical lock includes an outer handle arranged on the outer side of the door, a lock core arranged inside the door and connected to one end of the outer handle, and an inner handle arranged inside the door and connected to the other end of the lock core. It also includes a movable seat movably arranged inside the inner handle and in contact with the square core on the lock core at one end; a switch movably arranged on the inner handle and connected to the other end of the movable seat; a clutch assembly arranged inside the outer handle and connected to the square core. Pushing the switch can drive the square core to move away from the outer handle, so that the clutch assembly is locked with the outer handle. Rotating the outer handle can drive the square core and the clutch assembly to rotate to unlock the lock core; or can drive the square core to move towards the outer handle, so that the clutch assembly is unlocked from the outer handle and the outer handle rotates freely; through the above structure, it can be avoided that the user still rotates the outer handle forcefully outside the door when the insurance function is turned on, which may damage the door lock structure and improve the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, where:

[0019] Figure 1 is a schematic structural diagram of a mechanical lock;

[0020] Figure 2 is a first exploded view of a mechanical lock;

[0021] Figure 3 is Figure 2 a partial enlarged view of area A in

[0022] Figure 4 is a second exploded view of a mechanical lock;

[0023] Figure 5 is Figure 4 a partial enlarged view of area B in

[0024] Figure 6 It is a cross-sectional view of a mechanical lock;

[0025] Figure 7 It is Figure 6 a partial enlarged view of region C in Specific Embodiments

[0026] This part will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the drawings. The function of the drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention. However, it should not be construed as a limitation on the protection scope of the present invention.

[0027] In the description of the present invention, the meaning of "a plurality of" is more than two. Understandings such as "greater than", "less than", and "exceeding" do not include the present number, and understandings such as "above", "below", and "within" include the present number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0028] In the description of the present invention, it should be understood that for the orientation description, such as the orientation or positional relationship indicated by "upper", "lower", "front", "rear", "left", "right", etc., is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation on the present invention.

[0029] In the present invention, unless otherwise clearly defined, words such as "set", "installed", and "connected" should be understood in a broad sense. For example, they can be directly connected, or indirectly connected through an intermediate medium; they can be fixedly connected, or detachably connected, and can also be integrally formed; they can be mechanically connected; they can be the communication inside two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0030] Referring to Figures 1 to 7 , a mechanical lock includes an outer handle 10 provided on the outer side of the door, a lock core 20 provided inside the door and having one end connected to the outer handle 10, and an inner handle 30 provided inside the door and connected to the other end of the lock core 20. It further includes:

[0031] a movable seat 40, movably arranged inside the inner handle 30 and having one end abutted against the square core 21 on the lock core 20;

[0032] A switch 50 is movably disposed on the inner handle 30 and connected to the other end of the movable seat 40;

[0033] The clutch assembly 60 is arranged in the outer handle 10 and connected to the square core 21. Pushing the switch 50 can drive the square core 21 to move away from the outer handle 10 so that the clutch assembly 60 and the outer handle 10 are locked. Rotating the outer handle 10 can drive the square core 21 and the clutch assembly 60 to rotate to unlock the lock cylinder 20; or it can drive the square core 21 to move toward the outer handle 10 to unlock the clutch assembly 60 and the outer handle 10, so that the outer handle 10 rotates idly.

[0034] In the present invention, the "safety function" is realized by the switch 50. Specifically, the door lock is in the state of releasing the safety function by default. In this state, the switch 50 drives the movable seat 40, the square core 21 and the front core 64 to move back to the outer handle 10. When the front core 64 moves, the clutch pin 68 on the clutch 61 is forced to move outward and partially extend into the third clutch groove 67 on the outer handle 10, thereby connecting the clutch assembly 60 with the outer handle 10, so that when the outer handle 10 rotates, the clutch assembly 60 can be driven to rotate, thereby driving the lock cylinder 20 to unlock; and when the safety function is turned on, the front core 64 drives the movable seat 40, the square core 21 and the front core 64 to move back to the outer handle 10. In the functional state, it is necessary to push the switch 50 toward the outer handle 10, which will push the movable seat 40, the square core 21 and the front core 64 toward the outer handle 10 in sequence. When the front core 64 moves, the clutch pin 68 will fall back from the third clutch groove 67 to be completely accommodated in the first clutch groove 63 and the second clutch groove 66, so that the connection between the outer handle 10 and the clutch assembly 60 is released, so that the outer handle 10 idles, thereby preventing the user from turning the outer handle from outside the door to damage the door lock structure when the safety function is turned on, thereby improving the user experience.

[0035] The clutch assembly 60 includes:

[0036] The clutch 61 has a through groove 62 extending along the moving direction of the square core 21, and the clutch 61 has a plurality of first clutch grooves 63 connected to the outside and the through groove 62 along its circumference;

[0037] The front core 64 is movably disposed in the through slot 62 and connected to the square core 21 at one end and connected to the outer handle 10 at the other end via a return spring 65. A plurality of second clutch slots 66 are disposed on the front core 64;

[0038] A plurality of third clutch grooves 67 are provided on the inner side wall of the outer handle 10;

[0039] A plurality of clutch pins 68 can be completely accommodated within the first clutch groove 63 and the second clutch groove 66 to enable the outer door handle 10 to rotate idly, or can be driven by the front core 64 to at least partially extend into the third clutch groove 67, so that the outer door handle 10 can drive the square core 21 and the clutch assembly 60 to rotate to unlock the lock core 20.

[0040] As a first embodiment of the clutch pin 68, the clutch pin 68 is set as a ball, which can greatly reduce the resistance when the clutch pin 68 extends and retracts; as a second embodiment of the clutch pin 68, the clutch pin 68 can be a clutch post, including a prism, a cylinder, etc., which is not limited herein.

[0041] The first clutch groove 63, the second clutch groove 66, the third clutch groove 67 and the clutch pin 68 are all provided with 4 and are evenly spaced; this setting can ensure better connection firmness between the clutch assembly 60 and the outer door handle 10 when the door lock is in the state of releasing the insurance function, and improve the unlocking reliability.

[0042] A butt joint groove 70 inclined towards the lock core 20 is provided on the rear cover of the lock core 20 or the inner door handle 30, and one end of the movable seat 40 can be in butt joint with the butt joint groove 70 when pushing the square core 21 to move towards the outer door handle 10.

[0043] The butt joint groove 70 is set as a V-shaped groove and the open end faces the inner door handle 30; by providing the butt joint groove 70, when the insurance function is turned on, the inner door handle 30 can be rotated to drive the movable seat 40 to rotate together. Since in this state, one end of the movable seat 40 is in butt joint with the butt joint groove 70, when the movable seat 40 rotates, it will be forced by the butt joint groove 70 to convert the rotational motion into a linear motion in the inner door handle 30, and then drive the switch 50 to reset, so that the insurance function can be released; further, by setting the butt joint groove 70 as a V-shaped groove, the insurance function can be released when rotating forward and backward, which greatly improves the convenience of use.

[0044] Certainly, the present invention is not limited to the above embodiments. Those skilled in the art can make equivalent deformations or substitutions without departing from the spirit of the present invention, and these equivalent deformations and substitutions are all included in the scope defined by the claims of this application.

Claims

1. A mechanical lock, comprising an outer handle (10) provided on the outer side of the door, a lock core (20) provided inside the door and having one end connected to the outer handle (10), and an inner handle (30) provided on the inner side of the door and connected to the other end of the lock core (20), characterized in that, Further comprising: A movable seat (40), movably arranged within the inner door handle (30) and having one end abutting against the square core (21) on the lock core (20); A switch (50), movably arranged on the inner door handle (30) and connected to the other end of the movable seat (40); A clutch assembly (60), arranged within the outer door handle (10) and connected to the square core (21). Pushing the switch (50) can drive the square core (21) to move away from the outer door handle (10), so that the clutch assembly (60) is locked with the outer door handle (10). Rotating the outer door handle (10) can drive the square core (21) and the clutch assembly (60) to rotate to unlock the lock core (20); or can drive the square core (21) to move towards the outer door handle (10), so that the clutch assembly (60) is unlocked from the outer door handle (10), and the outer door handle (10) rotates freely; An abutting groove (70) inclined towards the lock core (20) is provided on the rear cover of the lock core (20) or the inner door handle (30). One end of the movable seat (40) can abut against the abutting groove (70) when the square core (21) is pushed towards the outer door handle (10); the abutting groove (70) is set as a V-shaped groove and the open end faces the inner door handle (30).

2. The mechanical lock according to claim 1, characterized in that: The clutch assembly (60) includes: A clutch (61), within which there is a through groove (62) running through along the movement direction of the square core (21). Along the circumferential direction of the clutch (61), a plurality of first clutch grooves (63) communicating with both the outside and the through groove (62) are provided; A front square core (64), movably arranged within the through groove (62), having one end connected to the square core (21) and the other end connected to the outer door handle (10) through a return spring (65). A plurality of second clutch grooves (66) are provided on the front square core (64); A plurality of third clutch grooves (67), arranged on the inner side wall of the outer door handle (10); A plurality of clutch pins (68), the clutch pins (68) can be completely accommodated within the first clutch grooves (63) and the second clutch grooves (66) to make the outer door handle (10) rotate freely, or can be driven by the front square core (64) to at least partially extend into the third clutch grooves (67) to enable the outer door handle (10) to drive the square core (21) and the clutch assembly (60) to rotate to unlock the lock core (20).

3. A mechanical lock according to claim 2, characterized in that: The clutch pin (68) is set as a ball.

4. A mechanical lock according to claim 2, characterized in that: The first clutch grooves (63), the second clutch grooves (66), the third clutch grooves (67) and the clutch pins (68) are all set to 4 and are evenly spaced.

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