Internal lock structure of wall-hung cassette

Abstract

The utility model relates to an inner lock structure of a wall-hung cassette. A telescopic spring bolt is arranged on the inner wall of one side in the open end of a box body, an annular lock catch is arranged at the position, corresponding to the spring bolt, of a mounting plate, a clamping groove is formed in the inner wall of the other side in the open end of the box body, and an insertion rod is arranged on the lower portion of the mounting plate; the inner ends of the inserting rods can be connected with the clamping grooves in an inserted mode. The mounting plate and one side of the cassette are positioned and locked through matched connection of the inserting rod and the clamping groove, and then the mounting plate and the other side of the cassette are positioned and locked through matched connection of the spring bolt and the lock catch. During installation, the lock tongue can be automatically clamped into the lock catch along with pushing of the lock catch. In the dismounting process, dismounting can be completed only by jacking the spring bolt upwards through the shifting rod, withdrawing the spring bolt from the lock catch and pulling the mounting plate outwards, overall mounting and dismounting are easy and convenient, and the upper positioning structure and the lower positioning structure are not prone to damage and cannot be touched by mistake.

Description

Technical Field

[0001] The utility model relates to a connection structure between a dark box of a wall-mounted socket or switch and a mounting plate, in particular to an inner locking structure of the wall-mounted dark box. Background Art

[0002] Wall switches and sockets are essential electrical products during house construction and renovation. Before installation, an opening must be opened in the wall. A concealed box is secured within the opening. The switch or socket is then secured to a mounting plate with screw holes on either side of the mounting plate. L-shaped mounting tabs are provided on either side of the inner wall of the concealed box at positions corresponding to the screw holes. The mounting tabs have screw holes. Screws pass through the screw holes on the mounting plate and then screw into the screw holes in the mounting tabs, thereby securing the mounting plate to the concealed box. The following drawbacks exist for securing a switch or socket to a wall using a concealed box and a mounting plate: 1. During installation and removal, the screws require the use of tools such as screwdrivers to remove the screws, and each installation and removal requires the installation and removal of at least two screws, resulting in a relatively long installation and removal process. 2. During installation, the mounting tabs may bend due to human factors, such as improper installation. This can damage the internal threads of the screw holes when the screws are screwed into the mounting tabs, causing them to slip and making subsequent installation and removal difficult. 3. If the mounting tabs become damaged, fall off, or deform, the entire concealed box must be knocked out of the wall. Therefore, during the entire installation and maintenance process of the cassette with this structure, the labor installation cost and product damage cost are high.

[0003] In the prior art, there is a method of combining the mounting plate and the dark box by means of a snap buckle. The advantage of this method is that it is easy to install. During installation, the mounting plate and the dark box can be quickly connected by the snap buckle. However, the disadvantage is that it is inconvenient to disassemble. The snap buckle needs to be pried open with the help of tools, and sometimes the snap buckle is damaged, and the only option is to replace the mounting plate or the dark box.

[0004] Chinese utility model patent 202420078505.9 proposes a structure for connecting a mounting plate to a cassette, which allows for quick assembly and disassembly. However, the drawback is that in Example 1, the connection between the insertion rod and the guide rod is achieved through the teeth of a spring clip and a limit plate. This means that the mounting plate can be separated from the cassette by simply pulling it outward, which means that anyone can easily remove the mounting plate, posing a certain safety hazard, especially in households with children. In Example 2, the outer end of the insertion rod is exposed outside the mounting plate. This not only makes it possible for the insertion rod to be accidentally touched when plugging and unplugging the plug, thereby causing the insertion rod to detach from the guide rod and the mounting plate to detach from the cassette, but also makes it easy for anyone to remove the mounting plate, which also poses a certain safety hazard. Summary of the Invention

[0005] The utility model provides a wall-mounted internal locking structure which solves the above-mentioned deficiencies in the prior art, can quickly complete the connection between the mounting plate and the dark box, and can prevent the mounting plate and the dark box from being separated due to accidental touch.

[0006] The purpose of this application is achieved as follows: the inner locking structure of the wall-mounted hidden box is provided with a retractable lock tongue on the inner wall on one side of the open end of the box body, a ring-shaped lock buckle is provided at the corresponding position of the mounting plate and the lock tongue, a card slot is provided on the inner wall on the other side of the open end of the box body, and an insertion rod is provided at the lower part of the mounting plate, and the inner end of the insertion rod can be plugged into and connected to the card slot.

[0007] Furthermore, a slide groove with an open lower end is provided on the upper inner wall of the open end of the box body, and a circle of inwardly protruding retaining ring is provided in the open end of the slide groove. A lock body is provided in the slide groove, and a lock tongue is fixedly connected to the lower end of the lock body and inserted in the retaining ring. A spring is provided between the lock body and the upper inner wall.

[0008] Furthermore, a through hole is provided on the mounting plate on the upper side of the lock.

[0009] During use, the mounting plate and the cassette are locked in place on one side by the mating connection of the insertion rod and the slot, and the mounting plate and the cassette are locked in place on the other side by the mating connection of the lock tongue and the lock catch. During installation, the lock tongue snaps into place as the lock catch is pushed in. During removal, the lock tongue is simply pushed up by the lever, and after the lock tongue exits the lock catch, the mounting plate is pulled outward to complete the removal. The overall assembly and disassembly is simple, and the upper and lower positioning structures are not easily damaged or accidentally touched. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The specific structure of this application is given by the following drawings and examples:

[0011] Attachment Figure 1 It is a structural diagram of Example 1 of the present application;

[0012] Attachment Figure 2 It is a structural diagram of Example 2 of the present application.

[0013] Legend: 1. Box body, 2. Lock tongue, 3. Lock catch, 4. Socket, 5. Mounting plate, 6. Insert rod, 7. Slot, 8. Block. DETAILED DESCRIPTION

[0014] The present application is not limited to the following embodiments, and the specific implementation method can be determined according to the technical solution of the present application and actual conditions.

[0015] In this utility model, for the convenience of description, the relative position relationship of each component is described based on the Figure 1 For example, the positional relationships of top, bottom, left, and right are based on the layout of the instructions. Figure 1The layout direction is determined by the

[0016] The present invention will be further described below in conjunction with the embodiments and accompanying drawings. Figure 1 、 2 As shown, the inner locking structure of the wall-mounted hidden box includes a hollow box body 1 with an open end, a retractable lock tongue 2 is provided on the upper inner wall of the open end of the box body 1, an annular lock buckle 3 is provided at the upper position of the mounting plate 5 corresponding to the lock tongue 2, a card slot 7 is provided on the lower side of the open end of the box body 1, and an insertion rod 6 is provided at the lower part of the mounting plate 5, and the inner end of the insertion rod 6 can be plugged into and connected with the card slot 7.

[0017] Furthermore, a slide groove with an open lower end is provided on the upper inner wall of the open end of the box body 1, and a circle of inwardly protruding retaining ring is provided in the open end of the slide groove. A lock body is provided in the slide groove, and the lock tongue 2 is fixedly connected to the lower end of the lock body and inserted in the retaining ring. A spring is provided between the lock body and the upper inner wall.

[0018] Furthermore, the side surface of the locking tongue 2 facing the open end of the box body 1 is an inclined surface, and the side surface away from the open end of the box body 1 is a vertical surface, and the inclined surface is inclined toward the open end of the box body 1 from bottom to top.

[0019] The spring pushes the lock body, which allows the lock tongue 2 to extend downward. As the lock catch 3 moves inward, the inner end of the lock catch 3 contacts the upper part of the inclined surface. As the lock catch 3 continues to move inward, the lock tongue 2 is gradually pushed upward until the front end of the lock catch 3 passes over the lock tongue 2. The lock tongue 2 moves downward again under the action of the spring, and the lock tongue 2 is inserted into the lock catch 3. The lock catch 3 will be blocked by the vertical surface of the lock tongue 2 and cannot move outward even if it is forced, thereby connecting the mounting plate 5 to the box body 1.

[0020] Furthermore, a through hole is provided on the mounting plate 5 on the upper side of the lock catch 3. The through hole is located opposite to the inclined surface of the lock tongue 3 and is flush with the upper portion of the inclined surface.

[0021] Example 1: Figure 1 As shown, the card slot 7 is opened on the inner wall of the box body 1, and the plug rod 6 includes a plug and a connecting rod. The plug is fixedly connected to the inner end of the connecting rod. There is a certain angle between the plug and the connecting rod, and the angle is less than or equal to 90°. The outer end of the connecting rod is fixedly connected to the back of the mounting plate 5.

[0022] Example 2: Figure 2 As shown, a card block 8 is provided on the inner wall of the lower side of the open end of the box body 1, and a card slot 7 is opened on the card block 8. The plug rod 6 includes a plug and a connecting rod. The plug is fixedly connected to the inner end of the connecting rod. There is a certain angle between the plug and the connecting rod, and the angle is less than or equal to 90°. The outer end of the connecting rod is fixedly connected to the back of the mounting plate 5.

[0023] When installing the present application, first move the lower part of the mounting plate 5 close to the lower part of the box body 1, and insert the plug of the insertion rod 6 into the card slot 7, then move the upper part of the mounting plate 5 close to the upper part of the box body 1, and as the lock buckle 3 moves inward, the lock tongue 2 is gradually pushed upward until the front end of the lock buckle 3 passes over the lock tongue 2, and the lock tongue 2 moves downward again under the action of the spring. At this time, the lock buckle 3 is blocked by the lock tongue 2, and the mounting plate 5 and the box body 1 are connected.

[0024] During disassembly, a tool such as a screwdriver, a wooden stick, or a lever is inserted into the box body 1 through the through hole, so that the lock tongue 2 can be pushed upward to disengage the lock tongue 2 from the lock buckle 3. At this time, the upper part of the mounting plate 5 can be pulled outward, and then the mounting plate 5 can be lifted upward to complete the disassembly.

[0025] As an improvement to the above embodiment, the lock tongue 2 can be arranged on any inner wall of the open end of the box body 1, and the groove can be arranged on any other inner wall. Correspondingly, the lock catch 3 is arranged on the mounting plate 5 at a position corresponding to the lock tongue 2.

[0026] A wire threading hole is formed on the side wall of the box body 1, and a baffle is provided in the wire threading hole. The baffle is fixedly connected to the inner wall of the wire threading hole by a breakable connecting piece. When a wire threading hole is needed, the baffle is struck hard to break the connecting piece. After removing the baffle, the wire can be passed through the wire threading hole into the box body 1.

[0027] The above description is merely an example to clearly illustrate the present application, and is not intended to limit the implementation of the present application. Any obvious changes or modifications derived from the technical solution of the present application are still within the scope of protection of the present application.

Claims

1. An internal locking structure for a wall-mounted cassette, comprising a hollow box body with an open end, characterized in that: A retractable lock tongue is provided on the inner wall on one side of the open end of the box body, a lock buckle is provided at the corresponding position of the mounting plate and the lock tongue, a card slot is provided on the inner wall on the other side of the open end of the box body, and an insertion rod is provided at the lower part of the mounting plate, and the inner end of the insertion rod can be plugged into the card slot.

2. The inner locking structure of the wall-mounted cassette according to claim 1, characterized in that: A slide groove with an open lower end is provided on the upper inner wall of the open end of the box body, a retaining ring protruding inward is provided in the open end of the slide groove, a lock body is provided in the slide groove, a lock tongue is fixedly connected to the lower end of the lock body and inserted in the retaining ring, and a spring is provided between the lock body and the upper inner wall.

3. The inner locking structure of the wall-mounted cassette according to claim 1, characterized in that: The side surface of the lock tongue facing the open end of the box body is an inclined surface, and the side surface away from the open end of the box body is a vertical surface, and the inclined surface is inclined toward the open end side of the box body from bottom to top.

4. The inner locking structure of the wall-mounted cassette according to claim 1, 2 or 3, characterized in that: A through hole is provided on the mounting plate on the upper side of the lock catch.

5. The inner locking structure of the wall-mounted cassette according to claim 1, 2 or 3, characterized in that: The card slot is arranged on the inner wall of the box body.

6. The inner locking structure of the wall-mounted cassette according to claim 1, 2 or 3, characterized in that: A clamping block is arranged on the inner wall of the lower side of the open end of the box body, and a clamping groove is opened on the clamping block.

7. The inner locking structure of the wall-mounted cassette according to claim 1, 2 or 3, characterized in that: The plug includes a plug and a connecting rod. The plug is fixedly connected to the inner end of the connecting rod. There is a certain angle between the plug and the connecting rod, which is less than or equal to 90 degrees. The outer end of the connecting rod is fixedly connected to the back of the mounting plate.

Images