阅读说明：本技术 一种门锁前后板连接结构 (Front and rear plate connecting structure of door lock ) 是由 郭镜华 杜永健 于 2021-01-27 设计创作，主要内容包括：本发明提出一种门锁前后板连接结构,包括锁芯、前板以及后板,该前板和后板之间设置安装空间,所述锁芯设置在安装空间内,所述前板上设置有向后板方向延伸的前锁紧板,该后板上设置有向前板方向延伸的后锁紧板,所述前锁紧板形成L形或者J型,所述后锁紧板形成倒L型或者倒J型,所述前锁紧板和后锁紧板组合形成锁紧孔,该锁紧孔的孔径从内到外变小,在锁紧孔内设置有锁紧螺帽,所述锁紧螺帽前端尺寸小于后端尺寸,通过形成孔径从内到外变小的锁紧孔,当锁紧螺帽向外运动时,该锁紧螺帽向前推动前锁紧板向后板方向移动,和推动后锁紧板向前板方向移动,实现前板向后板移动和后板向前板方向移动达到锁紧效果。(The invention provides a door lock front and rear plate connecting structure, which comprises a lock core, a front plate and a rear plate, wherein an installation space is arranged between the front plate and the rear plate, the lock core is arranged in the installation space, a front locking plate extending towards the rear plate is arranged on the front plate, a rear locking plate extending towards the front plate is arranged on the rear plate, the front locking plate is L-shaped or J-shaped, the rear locking plate is inverted L-shaped or inverted J-shaped, the front locking plate and the rear locking plate are combined to form a locking hole, the diameter of the locking hole is reduced from inside to outside, a locking nut is arranged in the locking hole, the size of the front end of the locking nut is smaller than that of the rear end, and the locking nut pushes the front locking plate to move towards the rear plate and pushes the rear locking plate to move towards the front plate when the locking nut moves outwards, the locking effect is achieved by the fact that the front plate moves towards the rear plate and the rear plate moves towards the front plate.)

1. The utility model provides a door lock front and back plate connection structure, its characterized in that, includes lock core, front bezel and back plate, sets up installation space between this front bezel and the back plate, the lock core sets up in installation space, be provided with the preceding locking plate that extends to the back plate direction on the front bezel, be provided with the back locking plate that extends to the front bezel direction on this back plate, preceding locking plate forms L shape or J type, back locking plate forms the type of falling L or the type of falling J, preceding locking plate and back locking plate combination form the locking hole, and the aperture in this locking hole diminishes from inside to outside, is provided with lock nut in the locking hole, lock nut front end size is less than the back end size.

2. The door lock front and rear plate connecting structure according to claim 1, wherein the lock nut is formed in a tapered shape such that a front end thereof becomes gradually larger toward a rear end thereof.

3. The door lock front and rear plate connecting structure according to claim 1, wherein a front hook portion is provided on the front locking plate, and a rear hook portion is provided on the rear locking plate, the front and rear hook portions forming a locking hole.

4. The door lock front and rear plate connecting structure according to claim 3, wherein the lock nut is gradually moved outward by screwing the screw, and simultaneously pushes the front hook portion to move toward the rear plate and pushes the rear hook portion to move toward the front plate, thereby achieving the locking effect by moving the front plate toward the rear plate and moving the rear plate toward the front plate.

5. The door lock front and rear plate connecting structure according to claim 1, wherein a left side plate is provided on left sides of the front and rear plates, the left side plate being provided between the front and rear plates, the left side plate being provided with a lock screw, the lock screw being engaged with the lock nut.

6. The door lock front and rear plate connecting structure according to claim 1, wherein a front hook portion is provided on the front locking plate, the front hook portion becoming thicker from a right side to a left side.

7. The door-lock front and rear plate connecting structure according to claim 6, wherein the front locking plate is formed integrally with the front plate.

8. The door lock front and rear plate connecting structure according to claim 1, wherein a rear hook portion is provided on the rear locking plate, the rear hook portion becoming thicker from a right side to a left side.

9. The door-lock front and rear plate connecting structure according to claim 8, wherein the rear locking plate is formed integrally with the rear plate.

Technical Field

The invention relates to a connecting structure of a front plate and a rear plate of a door lock.

Background

The existing door lock is generally composed of a rear plate arranged in a room, a front plate arranged outside the room, a lock cylinder and a left side plate arranged on a lock tongue, wherein the left side plate is arranged on the lock cylinder through a screw in the installation process, the front plate is locked with the rear plate through a locking screw, and a decorative cover is required to be arranged on the front plate and the rear plate to cover the screw after the front plate and the rear plate are connected and locked.

Disclosure of Invention

In order to solve the problems, the invention provides a front plate and rear plate connecting structure of a door lock, and aims to solve the problems that the existing door lock is troublesome to install, needs more accessories, has more installation procedures and is high in production material and storage cost.

The invention provides a door lock front and rear plate connecting structure, which comprises a lock core, a front plate and a rear plate, wherein an installation space is arranged between the front plate and the rear plate, the lock core is arranged in the installation space, a front locking plate extending towards the rear plate is arranged on the front plate, a rear locking plate extending towards the front plate is arranged on the rear plate, the front locking plate is L-shaped or J-shaped, the rear locking plate is inverted L-shaped or inverted J-shaped, the front locking plate and the rear locking plate are combined to form a locking hole, the diameter of the locking hole is reduced from inside to outside, a locking nut is arranged in the locking hole, the size of the front end of the locking nut is smaller than that of the rear end, and the locking nut pushes the front locking plate to move towards the rear plate and pushes the rear locking plate to move towards the front plate when the locking nut moves outwards, the locking effect is achieved by the fact that the front plate moves towards the rear plate and the rear plate moves towards the front plate, screws do not need to be arranged on the front plate and the rear plate to connect the front plate and the rear plate, a decorative cover is not needed, accessories are reduced, the outer surfaces of the front plate and the rear plate are smooth and smooth, the light rings are firm, the installation step is reduced, the installation speed is increased, and the installation cost and the storage cost are reduced.

In one or more embodiments, the lock nut is tapered such that the lock nut becomes progressively larger at a forward end toward a rearward end.

In one or more embodiments, the front locking plate is provided with a front hook, the rear locking plate is provided with a rear hook, and the front hook and the rear hook form a locking hole.

In one or more embodiments, the lock nut gradually moves outwards after the screw is screwed on, and simultaneously pushes the front hook part to move towards the rear plate and the rear hook part to move towards the front plate, so that the front plate and the rear plate move towards the front plate to achieve a locking effect.

In one or more embodiments, a left side plate is disposed on the left side of the front plate and the rear plate, the left side plate is disposed between the front plate and the rear plate, and a locking screw is disposed on the left side plate and is engaged with the locking nut.

In one or more embodiments, the front locking plate is provided with a front hook, and the front hook becomes thicker gradually from the right side to the left side.

In one or more embodiments, the front locking plate is integrally formed with the front plate.

In one or more embodiments, the rear locking plate is provided with a rear hook portion, and the rear hook portion becomes thicker gradually from the right side to the left side.

In one or more embodiments, the back locking plate is integrally formed with the back plate.

The invention has the beneficial effects that: through forming the locking hole that the aperture diminishes from inside to outside, when lock nut outwards moved, this lock nut promoted preceding locking plate forward and moved to the back plate direction, and promoted back locking plate and move to the front plate direction, realize that the front plate removes to the back plate and the back plate removes to the front plate direction reaches the locking effect, need not to set up the screw on front plate and back plate and connect front plate and back plate, also need not the dress trim cover, reduce the accessory, make the smooth aureole of surface of front plate and back plate, seem more solid, reduce the installation step and play, improve the installation rate, installation cost and storage cost have been reduced.

Drawings

Fig. 1 is a schematic view of a connection structure of front and rear plates of a door lock.

Fig. 2 is a schematic diagram of the disassembly of the connection structure of the front and rear plates of the door lock.

Fig. 3 is a sectional view of the connection structure of the front and rear plates of the door lock.

Fig. 4 is a schematic view of a front plate or a rear plate of a front-rear plate connecting structure of a door lock.

Detailed Description

The application scheme is further described below with reference to the accompanying drawings:

referring to fig. 1-4, the invention provides a front and rear plate connecting structure of a door lock, which comprises a lock cylinder 3, a front plate 1 and a rear plate 2, wherein an installation space is arranged between the front plate 1 and the rear plate 2, the lock cylinder 3 is arranged in the installation space, the front plate 1 is provided with a front locking plate 11 extending towards the rear plate 2, the rear plate 2 is provided with a rear locking plate 21 extending towards the front plate 1, the front locking plate 11 is formed into an L shape or a J shape, the rear locking plate 21 is formed into an inverted L shape or an inverted J shape, the front locking plate 11 and the rear locking plate 21 are combined to form a locking hole 7, the aperture of the locking hole 7 is reduced from inside to outside, a locking nut 5 is arranged in the locking hole 7, and the size of the front end of the locking nut 5 is smaller than that of the rear end.

Further, the lock nut 5 is formed in a tapered shape, and the front end of the lock nut 5 becomes gradually larger toward the rear end.

Further, a front hook portion 111 is disposed on the front locking plate 11, a rear hook portion 211 is disposed on the rear locking plate 21, and the front hook portion 111 and the rear hook portion 211 form a locking hole.

Further, the lock nut 5 gradually moves outwards after being screwed on, and simultaneously pushes the front hook part 111 to move towards the direction of the rear plate 2 and pushes the rear hook part 211 to move towards the direction of the front plate 1, so that the front plate 1 moves towards the rear plate 2 and the rear plate 2 moves towards the direction of the front plate 1 to achieve a locking effect.

Further, a left side plate 4 is arranged on the left side of the front plate 1 and the rear plate 2, the left side plate 4 is arranged between the front plate 1 and the rear plate 2, and a locking screw 6 is arranged on the left side plate 4, and the locking screw 6 is matched with a locking nut 5.

Further, the front locking plate 11 is provided with a front hook 111, and the front hook 111 becomes thicker from the right side to the left side.

Further, the front lock plate 11 is formed integrally with the front plate 1.

Further, a rear hook 211 is provided on the rear locking plate 21, and the rear hook 211 becomes thicker from the right side to the left side.

Further, the rear lock plate 21 is formed integrally with the rear plate 2.

The above preferred embodiments should be considered as examples of the embodiments of the present application, and technical deductions, substitutions, improvements and the like similar to, similar to or based on the embodiments of the present application should be considered as the protection scope of the present patent.