Fast-assembly door lock

Abstract

The invention discloses a fast-assembly door lock which comprises a door lock base, a reset torsion spring and a mounting seat, and a rotating hole is formed in the middle of the door lock base; a mounting hole and a mounting groove for mounting the reset torsion spring are formed in the mounting seat; an annular flange is arranged on the inner side wall of the rotating hole in an inward protruding mode, a plurality of clamping hooks are arranged at the upper end of the outer side wall of the mounting hole at intervals, and the clamping hooks are arranged on the annular flange. In the assembling process, the installation base provided with the reset torsion spring penetrates through the lower portion of the rotating hole, the clamping hook is arranged on the annular flange, and meanwhile the two ends, penetrating out of the installation groove, of the reset torsion spring abut against the door lock base. Compared with an existing door lock which is installed through a metal plate and a clamping ring, the door lock is easier to install and operate, and the manufacturing cost of the door lock is reduced. During use, the door handle is rotated, and the mounting seat rotating along with the door handle drives the reset torsion spring to deform; when the door handle is loosened, the reset torsion spring drives the door handle to rotate reversely through the installation base, and automatic reset of the door handle is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of door locks, and more specifically, it relates to a quick-installation door lock. Background Art

[0002] A door lock is a commonly used portal protection device to prevent illegal intrusion. Generally, it includes a lock body, door handles installed inside and outside the door, and a square shaft for linking the two door handles; and by rotating the door handle to drive the locking tongue of the lock body to extend and retract, the opening of the door lock is realized; after the door lock is opened, the door handle will rotate in the reverse direction under the action of the reset torsion spring to realize reset;

[0003] The reset torsion spring of the existing door lock is installed through a metal plate and a snap ring. Specifically, the handle head of the door handle is first passed through the door lock base and then the reset torsion spring is sleeved, and then the metal plate is sleeved, and it is installed and fixed through the snap ring; this method has the problems of troublesome assembly operation and relatively high manufacturing cost of the door lock. Summary of the Invention

[0004] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a quick-installation door lock.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A quick-installation door lock includes a door lock base, a reset torsion spring and a mounting seat. A rotation hole is provided in the middle of the door lock base;

[0007] The mounting seat is provided with a mounting hole for mounting the door handle and a mounting groove for mounting the reset torsion spring;

[0008] An annular flange is protruded inwardly on the inner side wall of the rotation hole. A plurality of hooks are spacedly arranged at the upper end of the outer side wall of the mounting hole. The hooks are placed on the annular flange, so that the mounting seat is rotatably arranged on the door lock base;

[0009] Both ends of the reset torsion spring pass through the mounting groove and abut against the door lock base. When the door handle is rotated, the mounting seat that rotates with the door handle drives the reset torsion spring to deform; when the door handle is released, the reset torsion spring drives the door handle to rotate in the reverse direction through the mounting seat to realize reset.

[0010] The present invention is further provided that: a abutting block is provided on the lower end surface of the door lock base and is matched with both ends of the reset torsion spring.

[0011] The present invention is further provided that: a pair of moving grooves for the relative movement of both ends of the reset torsion spring are oppositely arranged on the mounting seat. Both ends of the reset torsion spring respectively pass through the corresponding moving grooves and then abut against both sides of the abutting block.

[0012] The present invention is further provided that: the mounting hole and the mounting groove are arranged on the mounting seat from the inside to the outside.

[0013] The present invention is further configured that: a pair of clamping blocks are oppositely arranged on the inner side wall of the mounting hole, and a clamping groove adapted to the clamping blocks is arranged on the handle head of the door handle;

[0014] The lower part of the handle head passes through the mounting hole, and the clamping groove is matched with the corresponding clamping block, so that the door handle is clamped with the mounting seat.

[0015] The present invention is further configured that: a plugging groove for plugging a square shaft is arranged at the lower end part of the handle head, and a set screw hole is formed on the side wall of the door handle, and the set screw hole is communicated with the plugging groove;

[0016] One end part of a set screw passes through the set screw hole and abuts against the side wall of the square shaft to fix the square shaft on the handle head.

[0017] The present invention is further configured that: a plurality of set screw grooves are arranged on one side of the square shaft facing the set screw hole, and the front side wall of the set screw groove is inclined.

[0018] The present invention is further configured that: the door lock base includes a base body and a seat cover detachably mounted on the base body. A plurality of protrusions are spaced outwards and protrude from the edge of the base body, and the thickness of the protrusions gradually increases from top to bottom, so that the seat cover is tightly fitted with the base body.

[0019] The beneficial effects of the present invention are as follows: The door lock includes a door lock base, a reset torsion spring and a mounting seat. The mounting seat is provided with a mounting hole for mounting a door handle and a mounting groove for mounting a reset torsion spring; An annular flange is inwardly protruded on the inner side wall of the rotation hole of the door lock base. A plurality of hooks are spaced on the upper end of the outer side wall of the mounting hole, and the hooks are placed on the annular flange, so that the mounting seat is rotatably arranged on the door lock base; That is, during assembly, the mounting seat with the reset torsion spring installed is inserted upwards from below the rotation hole, so that the hooks are placed on the annular flange, and at the same time, the two end parts of the reset torsion spring passing through the mounting groove abut against the door lock base; Finally, the handle head of the door handle is inserted into the mounting seat from the door lock base, and the assembly of the door lock can be quickly realized. Compared with the existing door lock installed by a metal plate and a snap ring, the installation operation is simpler and more convenient, and the manufacturing cost of the door lock is reduced; At the same time, when in use, the door handle is rotated, and the mounting seat rotating with the door handle drives the reset torsion spring to deform; When the door handle is released, the reset torsion spring drives the door handle to rotate in the reverse direction through the mounting seat to realize the automatic reset of the door handle. Description of the Drawings

[0020] Figure 1 is an application diagram of a quick-installation door lock of the present invention;

[0021] Figure 2 is a structural schematic diagram of a quick-installation door lock of the present invention;

[0022] Figure 3Exploded view of a quick - install door lock of the present invention;

[0023] Figure 4 Structural schematic of the mounting base of a quick - install door lock of the present invention Figure 1 ;

[0024] Figure 5 Structural schematic of the mounting base of a quick - install door lock of the present invention Figure 2 ;

[0025] Figure 6 Structural schematic of the base body of a quick - install door lock of the present invention Figure 1 ;

[0026] Figure 7 Structural schematic of the base body of a quick - install door lock of the present invention Figure 2 ;

[0027] Figure 8 Structural schematic diagram of the door handle of a quick - install door lock of the present invention;

[0028] Figure 9 Structural schematic diagram of the square shaft of a quick - install door lock of the present invention;

[0029] Explanation of reference numerals: 1, door lock base; 11, base body; 111, protrusion; 12, seat cover; 13, rotation hole; 131, annular flange; 14, abutting block; 2, return torsion spring; 3, mounting base; 31, mounting hole; 32, mounting groove; 33, hook; 34, moving groove; 35, block; 4, door handle; 41, handle head; 411, card slot; 412, insertion slot; 42, setscrew hole; 5, square shaft; 51, setscrew groove. Detailed description of the specific implementation

[0030] Refer to the attached Figures 1 to 9 A further detailed description is given to a quick - install door lock of the present invention.

[0031] A quick - install door lock includes a door lock base 1, a return torsion spring 2 and a mounting base 3. A rotation hole 13 is provided in the middle of the door lock base 1; The mounting base 3 is provided with a mounting hole 31 for mounting a door handle 4 and a mounting groove 32 for mounting the return torsion spring 2;

[0032] An annular flange 131 is inwardly protruded 111 on the inner side wall of the rotation hole 13. A plurality of hooks 33 are spaced at the upper end of the outer side wall of the mounting hole 31. The hooks 33 are placed on the annular flange 131, so that the mounting base 3 is rotatably arranged on the door lock base 1; Among them, the hook 33 has elasticity. When installing the mounting base 3, the hook 33 undergoes elastic deformation so that the hook 33 can pass through the rotation hole 13 and be placed on the annular flange 131;

[0033] During assembly, the mounting base 3 with the return torsion spring 2 installed is inserted upward from below the rotation hole 13, so that the hook 33 is placed on the annular flange 131. At the same time, the two end parts of the return torsion spring 2 passing through the installation groove 32 abut against the door lock base 1. Finally, the handle head 41 of the door handle 4 is inserted into the mounting base 3 from the door lock base 1, and the assembly of the door lock can be quickly realized. Compared with the existing door lock installed by a metal plate and a snap ring, the installation operation is simpler and more convenient, reducing the manufacturing cost of the door lock. At the same time, during use, when the door handle 4 is rotated, the mounting base 3 rotating with the door handle 4 drives the return torsion spring 2 to deform. When the door handle 4 is released, the return torsion spring 2 drives the door handle 4 to rotate in the reverse direction through the mounting base 3, realizing the automatic reset of the door handle 4.

[0034] Wherein, a pair of abutting blocks 14 adapted to the two end parts of the return torsion spring 2 are arranged on the lower end surface of the door lock base 1; a pair of moving grooves 34 for the relative movement of the two end parts of the return torsion spring 2 are oppositely arranged on the mounting base 3. The two end parts of the return torsion spring 2 respectively pass through the corresponding moving grooves 34 and abut against both sides of the abutting block 14. When the door handle 4 is rotated, one end part of the return torsion spring 2 is separated from the abutting block 14 and rotates with the mounting base 3, while the other end part abuts against the abutting block 14 and moves relative to the mounting base 3 in the moving groove 34, driving the deformation of the return torsion spring 2. After the door handle 4 is released, the return torsion spring 2 drives the mounting base 3 to rotate in the reverse direction, realizing the automatic reset of the door handle 4.

[0035] Wherein, the mounting hole 31 and the installation groove 32 are arranged on the mounting base 3 from the inside to the outside. A pair of clamping blocks 35 are oppositely arranged on the inner side wall of the mounting hole 31, and a clamping groove 411 adapted to the clamping blocks 35 is arranged on the handle head 41 of the door handle 4; the handle head 41 passes through the mounting hole 31 downward, and the clamping groove 411 is matched with the corresponding clamping block 35, so that the door handle 4 is clamped with the mounting base 3.

[0036] Wherein, a plugging groove 412 for plugging the square shaft 5 is arranged at the lower end part of the handle head 41, and a set screw hole 42 is formed on the side wall of the door handle 4. The set screw hole 42 is communicated with the plugging groove 412; one end part of the set screw passes through the set screw hole 42 and abuts against the side wall of the square shaft 5, firmly fixing the square shaft 5 on the handle head 41.

[0037] Wherein, a plurality of set screw grooves 51 are arranged on one side of the square shaft 5 facing the set screw hole 42. The front side wall of the set screw groove 51 is inclined, so that when the set screw is screwed in inward, the set screw is deflected inward under the guidance of the front side wall, so that the door handle 4 can be closely attached to the door lock base 1, preventing the door handle 4 from loosening relative to the door lock base 1.

[0038] The door lock base 1 includes a base body 11 and a seat cover 12 detachably mounted on the base body 11, and a rotation hole 13 is provided on the base body 11; a plurality of protrusions 111 are spaced outwards and protrude from the edge of the base body 11, and the thickness of the protrusions 111 gradually increases from top to bottom, so that the seat cover 12 and the base body 11 are tightly fitted.

[0039] The above are only the preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and retouches should also be regarded as the protection scope of the present invention.

Claims

1. A quick-installation door lock, characterized in that: It includes a door lock base, a reset torsion spring and a mounting seat. A rotating hole is provided in the middle of the door lock base; The mounting seat is provided with a mounting hole for mounting a door handle and a mounting groove for mounting a reset torsion spring; An annular flange is provided by inward protrusion on the inner side wall of the rotating hole. A plurality of hooks are provided at intervals on the upper end of the outer side wall of the mounting hole. The hooks are placed on the annular flange, so that the mounting seat is rotatably arranged on the door lock base; Both ends of the reset torsion spring pass through the mounting groove and abut against the door lock base. When the door handle is rotated, the mounting seat that rotates with the door handle drives the reset torsion spring to deform; when the door handle is released, the reset torsion spring drives the door handle to rotate in the reverse direction through the mounting seat to achieve reset.

2. The quick-installation door lock according to claim 1, characterized in that: Abutting blocks that cooperate with both ends of the reset torsion spring are provided on the lower end surface of the door lock base.

3. The quick-installation door lock according to claim 2, characterized in that: A pair of moving grooves for the relative movement of both ends of the reset torsion spring are oppositely arranged on the mounting seat. Both ends of the reset torsion spring respectively pass through the corresponding moving grooves and then abut against both sides of the abutting block.

4. A quick-installation door lock according to claim 1 or 2 or 3, characterized in that: The mounting hole and the mounting groove are arranged on the mounting seat from the inside to the outside.

5. The quick-installation door lock according to claim 4, characterized in that: A pair of clamping blocks are oppositely arranged on the inner side wall of the mounting hole. A clamping groove adapted to the clamping block is provided on the handle head of the door handle; The handle head passes through the mounting hole downward, and the clamping groove cooperates with the corresponding clamping block, so that the door handle is clamped to the mounting seat.

6. The quick-installation door lock according to claim 5, characterized in that: A plugging groove for plugging a square shaft is provided at the lower end of the handle head. A set screw hole is opened on the side wall of the door handle, and the set screw hole is communicated with the plugging groove; One end of a set screw passes through the set screw hole and abuts against the side wall of the square shaft to fix the square shaft to the handle head.

7. The quick-installation door lock according to claim 6, characterized in that: A plurality of set screw grooves are provided on one side of the square shaft facing the set screw hole, and the front side wall of the set screw groove is inclined.

8. A quick-installation door lock according to claim 1 or 2 or 3, characterized in that: The door lock base includes a base body and a seat cover detachably mounted on the base body. A plurality of protrusions are provided by outward protrusion and at intervals on the edge of the base body. The thickness of the protrusions gradually increases from top to bottom, so that the seat cover is tightly fitted with the base body.

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