An adjustable recessed pre-embedded box

Abstract

The utility model discloses an adjustable concealed pre -buried box relates to bathroom equipment technical field, the utility model discloses a box body, the inside rear end of box body is provided with the valve core installation component, and the valve core installation component includes two fixed frames that are fixedly connected respectively below the inside rear end face of box body, and the fixed frame all swing joint has L type board above, and the fixed connection has same movable frame between two L type boards adjacent to each other, and the inside upper and lower of movable frame all swing joint has second sliding block, and the front end face of second sliding block all fixedly connected with installation block, and the inside center of box body still is provided with water pipe installation component, and the water pipe installation component includes two installation frames that swing joint in the inside top and bottom of box body respectively. The utility model discloses through L type board, movable frame, second sliding block and installation block, has solved the problem that current cannot adapt multi -size valve core, through movable board, U type support and clamping block, has solved the problem that current water pipe connection is easy to loosen.

Description

Technical Field

[0001] This utility model belongs to the technical field of bathroom equipment, and in particular relates to an adjustable concealed embedded box. Background Technology

[0002] In modern architectural decoration, the installation of bathroom fixtures increasingly pursues simplicity and overall harmony in appearance. Concealed bathroom products, especially concealed shower systems, can hide pipes and valves inside the wall, with only a neat control panel and water outlet exposed on the wall surface, greatly enhancing the aesthetics of the space and the user experience. Among them, the embedded box is the core component for realizing the concealed installation of the shower system. As a functional carrier connecting the internal pipes and the wall terminals, it needs to be pre-embedded in the wall in the early stage of decoration to reliably fix the mixing valve core, connect the hot and cold water pipes, and provide a supporting foundation for the final installed panel. A document with publication number CN218564506U discloses a bathroom faucet embedded box, including a front-opening base box, a cover, a protective cover, and a level. The base box includes fixing holes on the back panel, a ring-shaped distribution of fixing posts, and fixing plates at the corners and the middle of the length direction. The cover includes a ring-shaped insertion groove on the circumferential wall panel, a front-opening mounting cavity in the middle, a functional hole opposite to the faucet valve core cavity, and a ring-shaped distribution of connecting holes. The opening end of the protective cover has an interface with a clearance groove and a hook. The front end of the base box is inserted into the ring-shaped insertion groove, and a screw passes through the connecting hole and engages with the fixing posts. The level is located in the mounting cavity. The interface is inserted into the functional hole, the protective cover and the cover are engaged, and the hook engages with the rear surface of the cover. The protective cover is detachable. However, it still has the following drawbacks in practical use: 1. The pre-embedded box mentioned above has its base box connected and installed by a fixed column base and a box cover. The inside of the base box is also provided with threaded holes for installing valve cores. However, during use, the position of the threaded holes for installing valve cores is fixed, which means that it can only be used with valve cores of a specific size. Since the size of valve cores is diverse, its applicability is small and its practicality is low. 2. The aforementioned embedded box has an inlet hole on the side of the bottom box for installing a water inlet pipe. The water inlet pipe extends through the inlet hole into the interior of the bottom box and connects with the valve core. However, during use, the section of the water inlet pipe inside the bottom box lacks a fixing structure, which makes it easy for the water inlet pipe and the valve core to loosen. Furthermore, since the bottom box is embedded in the wall, it is inconvenient to inspect and maintain it.

[0003] To address these issues, we provide an adjustable recessed pre-installed box. Utility Model Content

[0004] The purpose of this utility model is to provide an adjustable concealed pre-embedded box. The L-shaped plate drives the movable frame to move relative to the fixed frame, and the second slider drives the mounting block to move relative to the movable frame. Thus, the mounting block can install valve cores of different sizes, solving the problem of existing boxes that are not compatible with valve cores of various sizes. The movable plate drives the U-shaped frame and clamping block to move to the designated position, and the U-shaped frame drives the clamping block to clamp and fix the water pipe, solving the problem of existing boxes that are inconvenient to fix water pipes.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model is an adjustable concealed embedded box, including a box body. A valve core mounting assembly is provided at the rear end of the box body. The valve core mounting assembly includes two fixed frames that are respectively fixedly connected to the upper and lower sides of the rear end face inside the box body. Each fixed frame is movably connected to an L-shaped plate. The same movable frame is fixedly connected between two adjacent L-shaped plates. A second slider is movably connected to the upper and lower sides of the movable frame. An installation block is fixedly connected to the front end face of each second slider. A water pipe mounting assembly is also provided at the center of the box body. The water pipe mounting assembly includes two mounting frames that are respectively movably connected to the top and bottom of the inner side of the box body. A movable plate is movably connected to each mounting frame. A U-shaped frame is fixedly connected to the end faces of the movable plates that are close to each other. A clamping block is movably connected to the U-shaped frame. A rubber pad is glued to the arc surface of each clamping block.

[0006] The present invention is further configured such that: a panel is fixedly connected to the front end of the box body, an installation groove is provided at the center of the end face of the panel, a water outlet and a drain hole are provided on both sides of the front end face of the panel, positioning lines are provided above and below the drain hole, and a water inlet is provided on one side of the outer wall of the box body.

[0007] A further feature of this invention is that ear seats are welded at all four corners of the box, and through holes are provided on the surface of each ear seat.

[0008] The present invention is further configured such that: a first slider is movably connected to both sides of the inner side of the fixed frame; multiple threaded holes are equally spaced on the inner rear end face of the box; the vertical support arms of the L-shaped plate are fixedly connected to the front end face of the first slider; a first threaded rod is threadedly connected to the vertical support arm of the L-shaped plate; a knob is fixedly connected to the front end of the first threaded rod; and the rear end of the first threaded rod passes through the first slider and is threadedly connected to the inside of one of the threaded holes.

[0009] A further feature of this invention is that: a first fixing rod is fixedly connected to both outer walls of the second slider; the end of the first fixing rod away from the second slider extends to the outside of the movable frame and is threadedly connected to a first damping plate; the first damping plates respectively abut against the outer walls of both sides of the movable frame.

[0010] The present invention is further configured such that: mounting posts are snapped onto both sides of the top and bottom of the inner side of the box, the mounting posts are located on both sides of the mounting frame, and a second fixing rod is fixedly connected to both outer walls of the mounting frame. The end of the second fixing rod away from the mounting frame passes through the mounting post and is threadedly connected to a second damping plate. The second damping plate is respectively abutted against and connected to the outer wall of the mounting post on the side away from the mounting frame.

[0011] A further feature of this invention is that: a sliding rod is fixedly connected inside the mounting frame, a third slider is sleeved on the outer wall of the sliding rod, the free end of the third slider extends to the outside of the mounting frame and is fixedly connected to the movable plate, a third fixing rod is fixedly connected to the front end face of the third slider, the front end of the third fixing rod extends to the outside of the mounting frame and is threadedly connected to a third damping plate, and the third damping plate is in contact with the front end face of the mounting frame.

[0012] A further feature of this invention is that: a sleeve rod is rotatably connected inside the U-shaped frame, and a second threaded rod is threadedly connected inside the sleeve rod. One end of the second threaded rod extends to the outside of the U-shaped frame and is movably connected to the center of the surface of the clamping block near the U-shaped frame. Limiting rods are fixedly connected to both the front and rear ends of the clamping block near the U-shaped frame. The end of the limiting rod away from the clamping block extends into the inside of the U-shaped frame and is fixedly connected to a limiting plate.

[0013] This utility model has the following beneficial effects: 1. This utility model, by setting up a valve core mounting assembly, utilizes a horizontally adjustable L-shaped plate to drive the movable frame to move horizontally, and a vertically adjustable second slider to drive the mounting block to move vertically, achieving precise positioning of the mounting block in three-dimensional space. This allows the box to flexibly adapt to the installation needs of valve cores of various sizes, significantly improving the product's versatility and applicability, greatly simplifying the adjustment process during on-site installation, effectively improving installation efficiency, and ensuring the stability and accuracy of valve core installation.

[0014] 2. This utility model, by setting up a water pipe installation component, uses an adjustable mounting frame and a movable plate that can move left and right to drive the U-shaped frame for precise positioning. Then, by rotating the sleeve rod to drive the second threaded rod to drive the clamping blocks to move in opposite directions, combined with the elastic clamping of the rubber pad, it achieves multi-dimensional positioning and flexible fixation of the water pipe. This not only effectively prevents the water pipe from loosening and falling off at the connection between the water pipe and the valve core due to vibration, greatly improving the reliability and safety of the pipe connection, but also reduces the impact of water flow on the pipeline system through the buffering effect of the rubber pad, extending the service life of the pipeline, while facilitating later maintenance and adjustment.

[0015] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a front sectional view of the present invention.

[0018] Figure 2 This is a schematic diagram of the structure of the box body of this utility model.

[0019] Figure 3 This is a schematic diagram of the valve core mounting assembly of this utility model.

[0020] Figure 4 This is a structural disassembly diagram of the fixing frame and L-shaped plate of this utility model.

[0021] Figure 5 This is a structural disassembly diagram of the movable frame and mounting block of this utility model.

[0022] Figure 6 This is a schematic diagram of the structure of the water pipe installation assembly of this utility model.

[0023] Figure 7 This is a structural disassembly diagram of the mounting frame and movable plate of this utility model.

[0024] Figure 8 This is a structural disassembly diagram of the U-shaped frame and clamping block of this utility model.

[0025] Figure 9 This is a partial view of the present invention.

[0026] The attached diagram lists the components represented by each number as follows: 1-Box body, 101-Panel, 101a-Mounting groove, 101b-Outlet hole, 101c-Drain hole, 101d-Positioning line, 102-Inlet hole, 103-Ear seat, 103a-Through hole, 104-Threaded hole, 2-Valve core mounting assembly, 201-Fixing frame, 202-L-shaped plate, 202a-First slider, 202b-First threaded rod, 202c-Knob, 203-Moving frame, 204-Second slider, 204a-First fixing rod, 204b-First... Damping plate, 205-mounting block, 3-water pipe mounting assembly, 301-mounting frame, 301a-mounting post, 301b-second fixing rod, 301c-second damping plate, 301d-sliding rod, 302-moving plate, 302a-third slider, 302b-third fixing rod, 302c-third damping plate, 303-U-shaped frame, 303a-sleeve rod, 303b-second threaded rod, 304-clamping block, 304a-rubber pad, 304b-limiting rod, 304c-limiting plate. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0028] Example 1 Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 9 As shown, this is the first embodiment of the present invention. This embodiment provides an adjustable concealed embedded box, including a box body 1. A valve core mounting assembly 2 is provided at the rear end of the box body 1. The valve core mounting assembly 2 includes a fixed frame 201, an L-shaped plate 202, a movable frame 203, a second slider 204, and a mounting block 205. The L-shaped plate 202 drives the movable frame 203 to move relative to the fixed frame 201, and the second slider 204 drives the mounting block 205 to move relative to the movable frame 203. Thus, valve cores of different sizes can be installed through the mounting block 205, solving the problem of existing valve cores not being compatible with multiple sizes.

[0029] Specifically, two fixed frames 201 are provided and fixedly connected to the upper and lower parts of the rear end face inside the box body 1, respectively. The fixed frames 201 are used to install the L-shaped plate 202, and at the same time, the L-shaped plate 202 can drive the movable frame 203 to move in the left and right directions, realizing the adjustment of the position of the mounting block 205 in the left and right directions. Each fixed frame 201 is movably connected to an L-shaped plate 202. The L-shaped plate 202 is used to install the movable frame 203 and drive the movable frame 203 to move in the left and right directions. The same movable frame 203 is fixedly connected between two adjacent L-shaped plates 202. The movable frame 203 is used to adjust the position of the mounting block 205 in the left and right directions. Two sliders 204 are installed, allowing the second slider 204 to move vertically, thus adjusting the position of the mounting block 205 vertically. The upper and lower sides of the movable frame 203 are movably connected to the second slider 204. The second slider 204 is used to movably mount the mounting block 205 on the movable frame 203 and drive the mounting block 205 to move vertically. The mounting block 205 is fixedly connected to the front end face of the second slider 204. The valve core is fixed to the mounting block 205 by bolts. Thus, by adjusting the position of the mounting block 205, valve cores of different sizes can be installed inside the housing 1, expanding the range of applications.

[0030] Furthermore, a panel 101 is fixedly connected to the front end of the box 1. An installation groove 101a is provided at the center of the end face of the panel 101. A water outlet 101b and a drain hole 101c are respectively provided on both sides of the front end face of the panel 101. Positioning lines 101d are provided above and below the drain hole 101c. A water inlet 102 is provided on one side of the outer wall of the box 1. The panel 101 is used to seal the interior of the box 1. The installation groove 101a is used to install a level, so as to facilitate the adjustment of the level of the box 1 during installation. The water outlet 101b is used to install a faucet for the internal valve core. The drain hole 101c is used to drain the water accumulated in the box 1. The positioning line 101d is used to facilitate the alignment of the drain hole 101c with the drain groove on the wall. The water inlet 102 is used to install a water pipe for the internal valve core. Ear seats 103 are welded at the four corners of the box body 1. Through holes 103a are opened on the surface of the ear seats 103. The ear seats 103 and through holes 103a enable the box body 1 to be fixed in the pre-embedded hole by bolts. The fixed frame 201 has a first slider 202a movably connected to both sides of its interior. The rear end face of the box 1 has multiple threaded holes 104 at equal intervals. The vertical support arms of the L-shaped plate 202 are fixedly connected to the front end face of the first slider 202a. The vertical support arms of the L-shaped plate 202 are threadedly connected to the first threaded rod 202b. The front end of the first threaded rod 202b is fixedly connected to a knob 202c. The rear end of the first threaded rod 202b passes through the first slider 202a and is threadedly connected to the interior of one of the threaded holes 104. The first slider 202a allows the L-shaped plate 202 to be movably mounted on the fixed frame 201. The threaded holes 104, together with the first threaded rod 202b, fix the positions of the L-shaped plate 202 and the first slider 202a. The knob 202c facilitates the rotation of the first threaded rod 202b. First fixing rods 204a are fixedly connected to both outer walls of the second slider 204. The end of the first fixing rod 204a away from the second slider 204 extends to the outside of the movable frame 203 and is threadedly connected to a first damping plate 204b. The first damping plates 204b abut against the outer walls of both sides of the movable frame 203. The first fixing rods 204a are used to install the first damping plates 204b. The first damping plates 204b are used to increase the friction between the second slider 204 and the movable frame 203, thereby fixing the second slider 204 and the movable frame 203 by means of friction.

[0031] The operation process of this embodiment is as follows: When the valve core needs to be installed, firstly loosen the first damping plates 204b on both sides so that the second slider 204 can move freely within the movable frame 203; then turn the knob 202c to make the first threaded rod 202b exit from the threaded hole 104. At this time, the L-shaped plate 202 can move laterally within the fixed frame 201 through the first slider 202a; according to the size of the valve core, adjust the position of the L-shaped plate 202 laterally, and after moving the movable frame 203 to a suitable position, turn the knob 202c to make the first threaded rod 202b screw into the corresponding threaded hole 104 to fix the L-shaped plate 202; then adjust the position of the second slider 204 within the movable frame 203 vertically. Position the mounting block 205 to the predetermined installation height, and finally tighten the first damping plate 204b so that it presses firmly against the outer wall of the movable frame 203, thus firmly fixing the second slider 204. At this point, the valve core can be installed on the mounting block 205 with bolts to complete the installation and positioning of the valve core. After installation, a level can be placed through the mounting slot 101a on the panel 101 to adjust the box 1 to a horizontal state, and the box 1 can be fixed to the wall through the through hole 103a on the ear seat 103. Finally, connect the water pipe to the valve core so that the water outlet hole 101b and the drain hole 101c on the panel 101 correspond to the water outlet end and drain position of the valve core, respectively, thus completing the installation of the entire embedded box.

[0032] Example 2 Please see Figure 1 , Figure 2 , Figure 6 , Figure 7 , Figure 8 and Figure 9 As shown, this is the second embodiment of the present invention. This embodiment is based on the previous embodiment, but differs from the previous embodiment in that: a water pipe installation component 3 is also provided in the center of the inner part of the box 1. The water pipe installation component 3 includes an installation frame 301, a movable plate 302, a U-shaped frame 303, and a clamping block 304. The movable plate 302 drives the U-shaped frame 303 and the clamping block 304 to move to a designated position, and the U-shaped frame 303 drives the clamping block 304 to clamp and fix the water pipe, thus solving the problem of the existing inconvenience in fixing the water pipe.

[0033] Specifically, there are two mounting frames 301, which are movably connected to the top and bottom of the inner side of the box body 1, respectively. The mounting frames 301 are used to install the movable plate 302 and adjust the depth of the movable plate 302 inside the box body 1. Each mounting frame 301 is movably connected to a movable plate 302. The movable plate 302 is used to install the U-shaped frame 303 and drive the U-shaped frame 303 to move in the left and right directions relative to the mounting frames 301, thereby adjusting the position of the U-shaped frame 303 and the clamping block 304. U-shaped frames 303 are fixedly connected to the end faces of the movable plates 302 that are close to each other. The U-shaped frames 303 are used to install the clamping blocks 304 and drive the clamping blocks 304 to move, thereby adjusting the position of the clamping blocks 304. The clamping blocks 304 are movably connected to the U-shaped frames 303. Rubber pads 304a are glued to the arc surface of the clamping blocks 304. The clamping blocks 304 are used to install the water pipe, thereby preventing the water pipe from falling off the valve core. The rubber pads 304a protect the clamping part of the water pipe.

[0034] Furthermore, mounting posts 301a are snapped into the top and bottom sides of the inner side of the box 1. The mounting posts 301a are located on both sides of the mounting frame 301. A second fixing rod 301b is fixedly connected to the outer wall of both sides of the mounting frame 301. The end of the second fixing rod 301b away from the mounting frame 301 passes through the mounting post 301a and is threadedly connected to a second damping plate 301c. The second damping plate 301c abuts against the outer wall of the mounting post 301a away from the mounting frame 301. The mounting posts 301a are designed to snap the mounting frame 301 into the inside of the box 1. The second fixing rods 301b and the second damping plates 301c are designed to fix the mounting frame 301 onto the mounting posts 301a and facilitate the adjustment of the position of the mounting frame 301 on the mounting posts 301a, thereby facilitating the adjustment of the depth of the clamping block 304 inside the box 1. A slide rod 301d is fixedly connected inside the mounting frame 301. A third slider 302a is sleeved on the outer wall of the slide rod 301d. The free end of the third slider 302a extends to the outside of the mounting frame 301 and is fixedly connected to the movable plate 302. A third fixing rod 302b is fixedly connected to the front end face of the third slider 302a. The front end of the third fixing rod 302b extends to the outside of the mounting frame 301 and is threadedly connected to a third damping plate 302c. The third damping plate 302c abuts against the front end face of the mounting frame 301. The arrangement of the slide rod 301d and the third slider 302a enables the movable plate 302 to be movably mounted on the mounting frame 301. The arrangement of the third fixing rod 302b and the third damping plate 302c enables the third slider 302a to be fixed, thereby fixing the movable plate 302. The U-shaped frame 303 is internally rotatably connected to a sleeve rod 303a. The sleeve rod 303a is internally threaded to a second threaded rod 303b. One end of the second threaded rod 303b extends to the outside of the U-shaped frame 303 and is movably connected to the center of the surface of the clamping block 304 near the U-shaped frame 303. Limiting rods 304b are fixedly connected to both the front and rear ends of the surface of the clamping block 304 near the U-shaped frame 303. The end of the limiting rod 304b away from the clamping block 304 extends into the interior of the U-shaped frame 303 and is fixedly connected to a limiting plate 304c. The sleeve rod 303a and the second threaded rod 303b enable a movable connection between the U-shaped frame 303 and the clamping block 304, and drive the clamping block 304 to move relative to the U-shaped frame 303. The limiting rods 304b and the limiting plate 304c limit the movement of the clamping block 304 and make the movement of the clamping block 304 more stable.

[0035] The rest of the structure is the same as in Example 1.

[0036] The operation process of this embodiment is as follows: When it is necessary to fix the water pipe, first loosen the second damping plate 301c and the third damping plate 302c; at this time, the mounting frame 301 can move back and forth on the mounting post 301a through the second fixing rod 301b, and the movable plate 302 can move left and right on the sliding rod 301d inside the mounting frame 301 through the third slider 302a; according to the position where the water pipe needs to be connected, first adjust the depth position of the mounting frame 301 on the mounting post 301a, and after determining it, tighten the second damping plate 301c to fix it; then adjust the lateral position of the movable plate 302 on the mounting frame 301, and after determining it, tighten the third damping plate 302c. 02c is fixed in place; then, the sleeve rod 303a is rotated to drive the second threaded rod 303b to rotate. Due to the limiting action of the limiting rod 304b and the limiting plate 304c, the clamping block 304 cannot rotate and can only move linearly along the U-shaped frame 303. This operation is used to adjust the distance between the two clamping blocks 304; after the water pipe is placed between the two clamping blocks 304, the sleeve rod 303a is rotated in the opposite direction to make the two clamping blocks 304 move towards each other. The water pipe is firmly clamped by the rubber pad 304a on the arc surface of the clamping block 304; at this point, the positioning and fixing of the water pipe in three-dimensional space is completed, ensuring the accurate position and reliable connection between the water pipe and the valve core.

[0037] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0038] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it.

Claims

1. An adjustable recessed pre-installed box, comprising a box body (1), characterized in that: The rear end of the box (1) is provided with a valve core mounting assembly (2), and the valve core mounting assembly (2) includes two fixed frames (201) respectively fixedly connected to the upper and lower surfaces of the rear end face inside the box (1). Each fixed frame (201) is movably connected with an L-shaped plate (202), and the same movable frame (203) is fixedly connected between two adjacent L-shaped plates (202). The upper and lower surfaces of the movable frame (203) are movably connected with second sliders (204), and the front surface of the second sliders (204) is fixedly connected with a mounting bracket. The box (205) is further provided with a water pipe installation assembly (3) at its internal center. The water pipe installation assembly (3) includes two mounting frames (301) that are movably connected to the top and bottom of the inner side of the box (1). Each mounting frame (301) is movably connected to a movable plate (302). Each movable plate (302) is fixedly connected to a U-shaped frame (303) on its close-to-each end face. Each U-shaped frame (303) is movably connected to a clamping block (304). Each clamping block (304) is glued with a rubber pad (304a) on its arc surface.

2. The adjustable recessed pre-embedded box according to claim 1, characterized in that, The front end of the box (1) is fixedly connected to a panel (101), and a mounting groove (101a) is provided at the center of the end face of the panel (101). Water outlet (101b) and drain hole (101c) are respectively provided on both sides of the front end face of the panel (101), and positioning lines (101d) are provided above and below the drain hole (101c). A water inlet hole (102) is provided on one side of the outer wall of the box (1).

3. An adjustable recessed pre-embedded box according to claim 2, characterized in that, The box body (1) has ear seats (103) welded at each of the four corners, and each ear seat (103) has a through hole (103a) on its surface.

4. An adjustable recessed pre-installed box according to claim 1, characterized in that, The fixed frame (201) has a first slider (202a) movably connected to both sides inside, and a plurality of threaded holes (104) are equally spaced on the rear end face inside the box (1). The vertical support arms of the L-shaped plate (202) are all fixedly connected to the front end face of the first slider (202a), and a first threaded rod (202b) is threadedly connected to the vertical support arm of the L-shaped plate (202). A knob (202c) is fixedly connected to the front end of the first threaded rod (202b), and the rear end of the first threaded rod (202b) passes through the first slider (202a) and is threadedly connected to the inside of one of the threaded holes (104).

5. An adjustable recessed pre-embedded box according to claim 1, characterized in that, The second slider (204) has a first fixing rod (204a) fixedly connected to both outer walls. The end of the first fixing rod (204a) away from the second slider (204) extends to the outside of the movable frame (203) and is threadedly connected to a first damping plate (204b). The first damping plate (204b) abuts against the outer walls of both sides of the movable frame (203).

6. An adjustable recessed pre-embedded box according to claim 1, characterized in that, The box body (1) has mounting posts (301a) on both sides of the top and bottom inside, and the mounting posts (301a) are located on both sides of the mounting frame (301). The mounting frame (301) has a second fixing rod (301b) fixedly connected to the outer wall of both sides. The end of the second fixing rod (301b) away from the mounting frame (301) passes through the mounting post (301a) and is threadedly connected to a second damping plate (301c). The second damping plate (301c) is respectively connected to the outer wall of the mounting post (301a) away from the mounting frame (301).

7. An adjustable recessed pre-embedded box according to claim 1, characterized in that, The mounting frame (301) is internally fixedly connected to a slide rod (301d), and a third slider (302a) is sleeved on the outer wall of the slide rod (301d). The free end of the third slider (302a) extends to the outside of the mounting frame (301) and is fixedly connected to the movable plate (302). A third fixing rod (302b) is fixedly connected to the front end face of the third slider (302a). The front end of the third fixing rod (302b) extends to the outside of the mounting frame (301) and is threadedly connected to a third damping plate (302c). The third damping plate (302c) is in contact with the front end face of the mounting frame (301).

8. An adjustable recessed pre-installed box according to claim 1, characterized in that, The U-shaped frame (303) is rotatably connected to a sleeve rod (303a), and the sleeve rod (303a) is threadedly connected to a second threaded rod (303b). One end of the second threaded rod (303b) extends to the outside of the U-shaped frame (303) and is movably connected to the center of the surface of the clamping block (304) near the U-shaped frame (303). The front and rear ends of the clamping block (304) near the surface of the U-shaped frame (303) are fixedly connected to limit rods (304b). The end of the limit rod (304b) away from the clamping block (304) extends into the interior of the U-shaped frame (303) and is fixedly connected to a limit plate (304c).

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