Fabricated strong and weak current embedded threading bottom box

Abstract

The utility model relates to an assembly type strong and weak current pre-embedded threading bottom box, comprising a housing comprising a limiting strip; the wire box is arranged in the shell and comprises a mounting groove, a prism groove, a threaded through hole and a mounting lug; the movable block is arranged in the mounting groove and comprises an inclined contact surface and a prism block; and the positioning bolt is arranged in the threaded through hole and is in contact with the movable block. When the threading bottom box is used, after the wire box is placed in the shell, the positioning bolt is screwed up to extrude the movable block until the movable block is in close contact with the limiting strip, and the effect of fixing the wire box and the shell can be achieved; on the contrary, the positioning bolt is separated from the movable block by unscrewing the positioning bolt, and then the wire box is pulled out, so that the wire box can be independently disassembled. Therefore, when the threaded holes in the surfaces of the mounting lugs are damaged and the threading bottom box cannot fix the socket, the wire box can be independently detached for replacement, and the shell does not need to be replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a pre-embedded wiring bottom box for assembly type strong and weak electricity. Background Technique

[0002] The wiring bottom box is a very important electrical equipment in the electrical assembly of the building field. It is used for pre-embedding before pouring concrete and for cable connection after pouring is completed. The pre-embedded wiring bottom box has better stability compared with the wire box installed during the decoration process. In building decoration, the wiring of strong and weak electricity needs to be carried out separately to prevent strong electricity from interfering with the information transmission of weak electricity. Therefore, different wiring bottom boxes are required for strong and weak electricity, resulting in an increase in the number of wiring bottom boxes.

[0003] The traditional wiring bottom box generally includes a box body, an inlet, a rebar hole, and mounting ears. Threaded holes are provided on the surface of the mounting ears. When installing a socket, bolts are usually used to cooperate with the threaded holes of the mounting ears to fix the socket to the wiring bottom box.

[0004] Although the above installation method is convenient in actual use, after long-term use, the threaded holes inside the wiring bottom box will be damaged for various reasons. For example, the threaded holes are damaged due to the corrosion and rust of the bolts, or the threads are stripped due to disassembly and repair due to faults. After the above situation occurs, the socket cannot be installed on the wiring bottom box normally. And the wiring bottom box is usually pre-embedded in the cement wall and cannot be directly replaced. It is necessary to break open the wall and cut the steel bars to achieve it, and the replacement cost is too high. Therefore, an assembly type strong and weak electricity pre-embedded wiring bottom box is proposed to solve the above problems. Content of the Utility Model

[0005] Based on the above description, the utility model provides an assembly type strong and weak electricity pre-embedded wiring bottom box to solve the problem that it is not easy to replace the threaded holes of the existing wiring bottom box after being damaged.

[0006] The technical solution for the utility model to solve the above technical problems is as follows: An assembly type strong and weak electricity pre-embedded wiring bottom box, comprising:

[0007] A housing, which includes a limiting strip;

[0008] A wire box, which is arranged inside the housing and includes an installation groove, a prism groove, a threaded through hole, and mounting ears;

[0009] A movable block, which is arranged inside the installation groove and includes an inclined contact surface and a prism block;

[0010] A positioning bolt, which is arranged inside the threaded through hole and contacts the movable block.

[0011] Preferably, the outer shell includes a housing, and a wire inlet pipe and a rib-passing pipe are arranged on the outer surface of the housing, and the wire inlet pipe is communicated with the housing.

[0012] Preferably, a limiting strip is arranged on the inner surface of the housing, and the surfaces of the opposite sides of the limiting strip are both inclined surfaces.

[0013] Preferably, the wire box includes a box body, the box body is adapted to the housing, and the box body is arranged inside the housing.

[0014] Preferably, mounting grooves are arranged on both sides of the box body, prism grooves are arranged on the opposite sides of the mounting grooves, and the upper surface of the prism groove is an inclined groove surface.

[0015] Preferably, a communication hole is arranged on the surface of the box body, and the communication hole corresponds to the wire inlet pipe.

[0016] Preferably, mounting ears and threaded through holes are arranged on the inner wall of the box body, and the threaded through holes are communicated with the mounting grooves.

[0017] Preferably, the movable block includes a main block body, inclined contact surfaces are arranged at the upper and lower ends of the opposite sides of the main block body, prism blocks are arranged on the opposite sides of the main block body, and the upper surface of the prism block is an inclined surface.

[0018] Preferably, the positioning bolt is threadedly connected with the threaded through hole, and the end of the positioning bolt extends into the mounting groove and contacts the upper surface of the prism block.

[0019] Preferably, the end of the positioning bolt is provided with a chamfer structure.

[0020] Compared with the prior art, the present application has the following beneficial technical effects:

[0021] For a pre-embedded wiring bottom box for assembled strong and weak electricity provided by the utility model, after the wire box is placed inside the outer shell, by tightening the positioning bolt, the positioning bolt presses the movable block, and then the movable block gradually approaches the limiting strip in the mounting groove until it is in close contact with the limiting strip, so as to achieve the effect of fixing the wire box and the outer shell; conversely, by loosening the positioning bolt, the positioning bolt is separated from the movable block, and then the wire box is pulled outwards, and the limiting strip presses the movable block back into the mounting groove, so that the wire box can be disassembled separately. In this way, when the threaded hole on the surface of the mounting ear is damaged and the wiring bottom box cannot fix the socket, the wire box can be disassembled and replaced without replacing the outer shell, and the operation is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1Schematic diagram of the three-dimensional structure of a pre-embedded wiring bottom box for strong and weak electricity in an assembled type provided by an embodiment of the present utility model;

[0023] Figure 2 is Figure 1 structural cross-sectional schematic diagram;

[0024] Figure 3 is Figure 2 structural schematic diagram from another perspective;

[0025] Figure 4 Schematic diagram of the structure of the outer shell in an embodiment of the present utility model;

[0026] Figure 5 Schematic diagram of the structure of the wire box in an embodiment of the present utility model;

[0027] Figure 6 is Figure 5 structural cross-sectional schematic diagram;

[0028] Figure 7 is Figure 6 structural schematic diagram from another perspective;

[0029] Figure 8 Schematic diagram of the structure of the movable block in an embodiment of the present utility model;

[0030] Figure 9 is Figure 8 structural schematic diagram from another perspective;

[0031] Figure 10 Structural cross-sectional schematic diagram of the wiring bottom box without using the positioning bolt in an embodiment of the present utility model;

[0032] Figure 11 is Figure 10 structural schematic diagram from another perspective.

[0033] In the drawings, the list of components represented by each reference numeral is as follows:

[0034] 1. Outer shell;

[0035] 11. Shell body; 12. Inlet pipe; 13. Rebar pipe; 14. Limit strip;

[0036] 2. Wire box;

[0037] 21. Box body; 22. Installation groove; 23. Prism groove; 24. Threaded through hole; 25. Communication hole; 26. Installation ear;

[0038] 3. Movable block;

[0039] 31. Main block body; 32. Tilted contact surface; 33. Prism block;

[0040] 4. Positioning bolt. Detailed implementation manner

[0041] To facilitate the understanding of the present application, the present application will be described more comprehensively with reference to the relevant accompanying drawings. Embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used in the specification of this application herein are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0043] As used herein, the singular forms "a", "an" and "the" may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms "comprising" or "having" etc. specify the presence of the stated features, wholes, steps, operations, components, parts or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0044] See Figures 1-4 , a pre-embedded wiring bottom box for assembled strong and weak electricity, comprising:

[0045] A housing 1, which includes a limiting strip 14. Specifically, the housing 1 includes a housing body 11, an inlet pipe 12 and a reinforcement pipe 13 are provided on the outer surface of the housing body 11, the inlet pipe 12 is in communication with the housing body 11, the inlet pipe 12 is used for wiring, and the reinforcement pipe 13 is used for inserting steel bars. Two limiting strips 14 are provided on the left inner wall of the housing body 11, the surfaces of the opposite sides of these two limiting strips 14 are both inclined surfaces, and at the same time, two limiting strips 14 are also provided on the right inner wall of the housing body 11, and the surfaces of the opposite sides of these two limiting strips 14 are also both inclined surfaces.

[0046] See Figures 5-7 , a wire box 2, which is arranged inside the housing 1 and includes a mounting groove 22, a prism groove 23, a threaded through hole 24 and a mounting ear 26.

[0047] Specifically, the wire box 2 includes a box body 21 which is arranged inside the housing 11. The box body 21 has the same opening direction as the housing 11 and is adapted to the housing 11 so that the outer wall of the box body 21 can slide and fit with the inner wall of the housing 11. Installation grooves 22 are provided on both sides of the box body 21. The left installation groove 22 opens towards the left inner wall of the housing 11, and the right installation groove 22 opens towards the right inner wall of the housing 11. Prismatic grooves 23 are provided on the opposite sides of the two installation grooves 22. The prismatic grooves 23 communicate with the installation grooves 22, and the upper surface of the prismatic grooves 23 is an inclined groove surface. A communication hole 25 is provided on the surface of the box body 21, and the communication hole 25 corresponds to the inlet pipe 12 so that the cable can extend into the interior of the wire box 2. Installation ears 26 and threaded through holes 24 are respectively provided on the inner wall and the bottom wall of the box body 21. The threaded through holes 24 communicate with the installation grooves 22. The installation ears 26 are of an existing structure and are used to fix the socket in cooperation with bolts.

[0048] See Figures 8-11 , a movable block 3 which is arranged inside the installation groove 22 and includes an inclined contact surface 32 and a prismatic block 33. The two movable blocks 3 are respectively placed in the two installation grooves 22. Specifically, the movable block 3 includes a main block body 31. Inclined contact surfaces 32 are provided at the upper and lower ends on the opposite sides of the two main block bodies 31, which are similar to chamfer structures, and the inclined contact surfaces 32 are adapted to the limiting strips 14. Prismatic blocks 33 are provided on the opposite sides of the two main block bodies 31. The upper surface of the prismatic blocks 33 is an inclined surface, and the prismatic blocks 33 are adapted to the prismatic grooves 23, that is, the tip parts of the prismatic blocks 33 can be embedded into the prismatic grooves 23.

[0049] A positioning bolt 4 which is arranged inside the threaded through hole 24 and contacts the movable block 3. Specifically, the positioning bolt 4 is threadedly connected to the threaded through hole 24, and the bottom end of the positioning bolt 4 extends into the installation groove 22 and contacts the upper surface of the prismatic block 33. By rotating the positioning bolt 4, the positioning bolt 4 can move up and down in the threaded through hole 24. When the positioning bolt 4 moves towards the prismatic block 33, it can exert a squeezing effect on the prismatic block 33, causing the prismatic block 33 to gradually approach the limiting strip 14. Since there is an inclined angle at the contact between the positioning bolt 4 and the prismatic block 33, there is a lateral component force in the mutual force between the two. At this time, the movable block 3 slides in the installation groove 22 under the action of the lateral component force and gradually moves outwards. A chamfer structure, such as a hemispherical body, etc., can be provided at the bottom end of the positioning bolt 4. In this way, the squeezing effect of the positioning bolt 4 on the prismatic block 33 is more stable.

[0050] In this embodiment, when the movable block 3 is located inside the installation groove 22, there are two states:

[0051] State one is Figure 10 and Figure 11In the middle state, the positioning bolt 4 is not threadedly connected with the threaded through hole 24, and the movable block 3 is completely located inside the mounting groove 22. At this time, the wire box 2 can be directly separated from the housing 1;

[0052] State 2 is Figure 2 and Figure 3 In the state, the positioning bolt 4 is threadedly connected with the threaded through hole 24, and the bottom end of the positioning bolt 4 contacts the inclined surface of the prism block 33, the outer part of the movable block 3 has protruded to the outside of the mounting groove 22, and the inclined contact surface 32 of the movable block 3 is tightly fitted with the limiting strip 14. At this time, the limiting strip 14 limits the movable block 3, so that the junction box 2 cannot be separated from the housing 1.

[0053] Based on the above structure, when the wire threading box provided in this embodiment is actually used, the wire threading box can realize the function of a conventional wire threading box through the reinforcing bar tube 13, that is, the steel bars are fixed through the reinforcing bar tube 13, and the outer shell 1 can be directly embedded in the wall.

[0054] Place the two movable blocks 3 into the two installation grooves 22 respectively, then place the junction box 2 inside the outer shell 1, screw in the positioning bolt 4, the bottom end of the positioning bolt 4 contacts the inclined surface of the prism block 33, and press the movable block 3 outward until the inclined contact surface 32 of the movable block 3 contacts the inclined surface of the limit strip 14, so that the movable block 3 is just stuck between the two limit strips 14, thereby realizing the positioning of the junction box 2, so that the junction box 2 and the outer shell 1 are fixed.

[0055] When the threaded hole of the mounting ear 26 of the wire box 2 is damaged and the socket cannot be installed normally, the positioning bolt 4 can be loosened in the reverse direction to disengage the positioning bolt 4 from the prism block 33, and then the wire box 2 is pulled out, and the limit bar 14 squeezes the movable block 3 back into the mounting groove 22, and the wire box 2 can be removed separately. Therefore, when the threaded hole on the surface of the mounting ear 26 is damaged, causing the threading bottom box to be unable to fix the socket, the wire box 2 can be removed separately for replacement without replacing the shell 1, which is simple and convenient to operate.

[0056] In addition, if the threaded through hole 24 is damaged, resulting in the inability to fix the positioning bolt 4, the positioning bolt 4 can be directly removed to replace the wire box 2, which is simple and convenient to operate.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An assembled strong and weak current pre-buried wiring bottom box, characterized in that: include: A housing (1) comprising a limiting strip (14); A wire box (2) is arranged inside the housing (1) and comprises a mounting groove (22), a prism groove (23), a threaded through hole (24) and a mounting ear (26); A movable block (3) is arranged inside the mounting groove (22) and comprises an inclined contact surface (32) and a prism block (33); A positioning bolt (4) is arranged inside the threaded through hole (24) and is in contact with the movable block (3).

2. The pre-buried wire-threading bottom box according to claim 1 is characterized in that: The housing (1) comprises a shell (11), the outer surface of the shell (11) is provided with a wire inlet pipe (12) and a rib-penetrating pipe (13), and the wire inlet pipe (12) and the shell (11) are in communication with each other.

3. The pre-buried wire-threading bottom box according to claim 2 is characterized in that: The inner surface of the shell (11) is provided with the limiting strip (14), and the surfaces on the opposite side of the limiting strip (14) are both inclined surfaces.

4. The pre-buried wire-threading bottom box according to claim 2 is characterized in that: The wire box (2) comprises a box body (21), the box body (21) is adapted to the shell (11), and the box body (21) is arranged inside the shell (11).

5. The pre-buried wire-threading bottom box according to claim 4 is characterized in that: The box body (21) is provided with the mounting grooves (22) on both sides, and a prism groove (23) is provided on the side opposite to the mounting groove (22), and the upper surface of the prism groove (23) is an inclined groove surface.

6. The pre-buried wire-threading bottom box according to claim 5, characterized in that: A communication hole (25) is provided on the surface of the box body (21), and the communication hole (25) corresponds to the inlet pipe (12).

7. The pre-buried wire-threading bottom box according to claim 6 is characterized in that: The inner wall of the box body (21) is provided with the mounting ear (26) and the threaded through hole (24), and the threaded through hole (24) is communicated with the mounting groove (22).

8. The pre-buried wire-threading bottom box according to claim 1, characterized in that: The movable block (3) comprises a main block body (31), the upper and lower ends of the main block body (31) on the opposite side are both provided with inclined contact surfaces (32), and the opposite side of the main block body (31) is provided with a prism block (33), and the upper surface of the prism block (33) is an inclined surface.

9. The pre-buried wiring bottom box according to claim 8, characterized in that: The positioning bolt (4) is threadedly connected to the threaded through hole (24), and the end of the positioning bolt (4) extends to the inside of the installation groove (22) and contacts the upper surface of the prism block (33).

10. The pre-buried wire-threading bottom box according to claim 9, characterized in that: The end of the positioning bolt (4) is provided with a chamfered structure.

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