Panel fixing mechanism of junction box

Abstract

The utility model discloses a panel fixing mechanism of a junction box, which comprises a box body of the junction box and an injection-molded nut piece, two opposite side surfaces of the box body are provided with mounting through holes, the nut piece consists of a main body and a seat body, the nut hole of the main body is internally provided with an internal thread which is integrally injection-molded with the main body, and the main body is provided with a clamping piece corresponding to the mounting through hole. The main body with the shape corresponding to that of the mounting through hole is nested and inserted into the mounting through hole, and the seat body and the clamping piece are matched to fix the nut piece in the mounting through hole. When the screw penetrates through the panel mounting hole and is screwed into the nut hole, the nut piece can be subjected to position fine adjustment in a self-adaptive mode, the nut is not prone to being damaged, and the screw is screwed in more smoothly. And meanwhile, a flat-head screw rod or a pointed-end self-tapping screw rod can be randomly selected, so that the use is convenient. Circumferential positioning of the main body is realized in the mounting through hole; and meanwhile, the seat body and the clamping body are matched to realize axial positioning of the main body, so that firm installation can be ensured. And the nut piece is clamped into the mounting through hole, so that the manufacturing is convenient.

Description

Technical Field

[0001] The utility model relates to a pre-embedded junction box in a building electrical pipeline project. Background Art

[0002] During electrical installation, junction boxes (generally called 86-type installation boxes in the market) need to be pre-embedded on the indoor walls of buildings, and then wiring operations are carried out. Then, a panel is covered on the box body. Nuts are arranged on the two inner side walls near the box opening of the junction box. The mounting holes on both sides of the panel are fixedly connected to the nuts on the box body through screw rods. In the early stage, the nuts were 7-shaped metal parts installed on the box body, but they have been eliminated due to unstable connection, inconvenient use, and easy rust. In the prior art, generally, plastic parts formed by injection molding on the box body are used. Metal nuts are embedded and fixed in the plastic parts. When a long screw rod is screwed into the metal nut, the fixed metal nut is used as a stress concentration point, and the nut or plastic part is easily damaged during the process of screwing in the screw rod. At the same time, embedding metal nuts in plastic parts is not only troublesome to manufacture, but also only flat-headed screw rods can be used, and self-tapping screw rods with pointed heads cannot be used, otherwise the threads of the nuts will be damaged, which brings inconvenience to installation in many cases. Content of the Utility Model

[0003] In order to solve the above disadvantages, the technical problem to be solved by the utility model is to provide a panel fixing mechanism for a junction box, which is convenient to manufacture and use, the panel is firmly fixed, and the nut is not easily damaged. To solve the above technical problem, the technical solution adopted by the utility model is that a panel fixing mechanism for a junction box includes a box body of the junction box, and is characterized in that it further includes a nut part formed by injection molding. Installation through holes are provided on the opposite two side surfaces of the box body. The nut part is composed of a main body and a seat body. A nut hole is provided on the main body, and an internal thread integrally injection-molded with the main body is provided in the nut hole. A clamping part corresponding to the installation through hole is provided on the main body. The shape of the main body corresponds to the installation through hole, and the main body is nested and inserted into the installation through hole. The seat body and the clamping part cooperate to fix the nut part in the installation through hole.

[0004] The beneficial effect of the utility model is that the nut part and the box body are in a non-fixed connection manner. When the screw rod passes through the panel mounting hole and is screwed into the nut hole, the nut part can adaptively adjust its position, the nut is not easily damaged, and the screw rod is screwed in more smoothly. At the same time, flat-headed screw rods or self-tapping screw rods with pointed heads can be arbitrarily selected, which is convenient to use. Circumferential positioning of the main body is realized in the installation through hole; at the same time, the cooperation of the seat body and the clamping body realizes the axial positioning of the main body, so the installation can be ensured to be firm. The nut part can be simply snapped into the installation through hole, which is convenient to manufacture.

[0005] In one embodiment, the clamping part adopts a clamping rib, the clamping rib is arranged on the main body in front of the seat body, and the contact surface between the clamping rib and the installation through hole is a slope surface. The seat body and the clamping rib cooperate to clamp the installation through hole to fix the nut part in the installation through hole. The installation is firm and easy to manufacture.

[0006] The card edges can be provided on all or partial contact surfaces between the main body and the mounting through-holes. In one embodiment of the main body, the upper and lower surfaces and / or the left and right surfaces of the main body are respectively provided with the card edges.

[0007] In one embodiment, the mounting through-hole is a rectangular hole, providing more secure circumferential positioning.

[0008] In one embodiment, a positioning frame is provided outside the mounting through-hole, and the seat body is correspondingly embedded in the positioning frame, providing more secure circumferential positioning of the nut member on the box body.

[0009] In one embodiment, a guide hole for accommodating the screw is provided on the inner side wall of the box body below the mounting through-hole, and the position of the guide hole corresponds to the nut hole above. Further, the guide hole is an oval hole, restricting the downward direction of the screw and making it smoother to screw in the screw.

[0010] In one embodiment, the main body and the seat body are provided with internal cavities, saving materials.

[0011] In one embodiment, the axial length of the nut hole on the main body is 6 to 10 millimeters, especially 8 millimeters.

[0012] Of course, it is not necessary for any product implementing the present utility model to achieve all the above-mentioned advantages simultaneously.

[0013] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0014] It should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0015] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0016] In the present invention, unless otherwise clearly specified and defined, terms such as "mounted", "connected", "connected to", "fixed" and the like should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0017] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0018] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the first perspective of the overall structure of the embodiment (one nut member 2 is installed in the installation through hole, and the other nut member 2 is in an independent state).

[0020] Figure 2 Schematic diagram of the second perspective of the overall structure of the embodiment.

[0021] Figure 3 Schematic diagram of the enlarged structure of the nut member of the embodiment. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Refer to the attached Figures 1-3 , which reflects a specific structure of the present utility model. The panel fixing mechanism of the junction box includes the box body 1 of the junction box and also includes an injection-molded nut member 2.

[0023] In the example, rectangular installation through holes 8 are provided on two opposite side surfaces of the box body 1. The nut member 2 is composed of a main body 3 and a seat body 4, and a nut hole 5 is provided on the main body 3. In the example, the axial length H of the nut hole on the main body is 8 mm, which is longer than that of a common metal nut, which is beneficial to improving the connection strength of the threaded connection and maintaining the convenience of screwing in the screw rod.

[0024] The shape of the main body 3 is a rectangular body corresponding to the shape of the installation through hole 8, and the main body 3 is nested and inserted into the installation through hole 8 to realize the circumferential positioning of the main body 3. In the example, a positioning frame 7 is provided outside the installation through hole 8, and the seat body 4 is correspondingly embedded in the positioning frame 7 to make the circumferential positioning more firm.

[0025] In the example, clamping edges 6 are respectively provided on the upper and lower surfaces of the main body 3 in front of the seat body 4. When the main body 3 is inserted through the installation through hole 8, the plastic installation through hole 8 and / or the clamping edges 6 can pass through with a slight elastic deformation. In the example, the contact surface 601 between the clamping edge 6 and the installation through hole 8 is a slope surface, making it easier to pass through. After passing through, the elastic deformation is restored, and the clamping edges 6 on the upper and lower surfaces cooperate with each other up and down to clamp the installation through hole 8 and make it difficult to withdraw. The clamping edges 6 cooperate with the seat body 4 to clamp the installation through hole 8 to realize the axial positioning of the main body 3.

[0026] With the above technical solution, since the nut member 2 and the box body 1 are in a non-fixed connection manner, there is a certain fitting clearance between the main body 3 and the mounting through hole 8, and there is also a certain fitting clearance between the convex rib 6, the seat body 4 and the mounting through hole 8. When a screw rod (not shown in the figure) passes through a panel mounting hole (not shown in the figure) and is screwed into the nut hole 5, the nut member 2 can adaptively fine-tune its position within the range of the above-mentioned fitting clearance according to the screwing force of the screw rod. Therefore, the nut is not easily damaged and the screwing of the screw rod is smoother. At the same time, the internal thread integrally injection-molded with the main body in the nut hole 5 allows the use of either a flat-head screw rod or a self-tapping screw rod with a pointed head. All of these effectively improve the convenience of panel installation. When manufacturing the box body 1, the nut member 2 only needs to be pressed into the mounting through hole 3, which is convenient for manufacturing. Moreover, the injection-molded internal thread is not easily rusted and can be applied to humid environments such as bathrooms or outdoors, effectively extending the service life.

[0027] In the example, a guiding hole 9 for accommodating the screw rod is provided on the inner side wall of the box body 1 below the mounting through hole 8, and the guiding hole 9 is an elongated hole. The position of the guiding hole 9 is set corresponding to the nut hole 5 above. After passing through the nut hole 5, the screw rod enters the guiding hole 9, which restricts the downward direction of the screw rod, making the screwing of the screw rod smoother and also preventing the screw rod from damaging the wires or components installed in the box body 1 when entering, or even causing a short circuit.

[0028] In the example, the main body 3 and the seat body 4 are provided with an internal cavity 40 to save injection-molding materials.

[0029] The embodiments of the present invention disclosed above are only used to help illustrate the present invention. The embodiments do not describe all the details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and combines the accompanying drawings to specifically describe these embodiments in order to better explain the principle and practical application of the present invention, so that those skilled in the art can well understand and utilize the present invention. However, the present invention can be implemented in many other ways different from those described herein. Those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is only limited by the claims and their full scope and equivalents, and is not limited by the disclosed specific embodiments.

Claims

1. A panel fixing mechanism of a junction box, comprising a box body of the junction box, characterized in that: It also includes an injection-molded nut component, and mounting holes are provided on two opposite sides of the box body. The nut component consists of a main body and a seat body. The main body is provided with a nut hole, and the nut hole is provided with an internal thread injection-molded integrally with the main body. The main body is provided with a clamp corresponding to the mounting hole, and the shape of the main body corresponds to the mounting through hole setting, and the main body is nested and inserted in the mounting through hole, and the seat body and the clamp cooperate to fix the nut component in the mounting through hole.

2. A panel fixing mechanism for a junction box according to claim 1, characterized in that: The clamping piece adopts a clamping edge, which is arranged on the main body in front of the seat body. The contact surface between the clamping edge and the installation through hole is a slope surface. The seat body and the clamping edge cooperate to clamp the installation through hole to fix the nut piece in the installation through hole.

3. A panel fixing mechanism for a junction box as claimed in claim 2, characterized in that: The clamping edges are respectively arranged on the upper and lower surfaces and / or the left and right surfaces of the main body.

4. A panel fixing mechanism for a junction box according to any one of claims 1 to 3, characterized in that: The mounting through hole is a rectangular hole.

5. A panel fixing mechanism for a junction box according to any one of claims 1 to 3, characterized in that: A positioning frame is arranged outside the installation through hole, and the seat body is correspondingly embedded in the positioning frame.

6. A panel fixing mechanism for a junction box according to any one of claims 1 to 3, characterized in that: A guide hole for accommodating a screw rod is provided on the inner side wall of the box body below the mounting through hole, and the position of the guide hole corresponds to the nut hole above.

7. A panel fixing mechanism for a junction box as claimed in claim 6, characterized in that: The guide hole is a waist-shaped hole.

8. A panel fixing mechanism for a junction box according to any one of claims 1 to 3 and 7, characterized in that: The main body and the seat are provided with an internal cavity.

9. A panel fixing mechanism for a junction box according to any one of claims 1 to 3 and 7, characterized in that: The axial length of the nut hole on the main body is 6 to 10 mm.

10. A panel fixing mechanism for a junction box according to claim 9, characterized in that: The axial length of the nut hole on the main body is 8 mm.

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