Wiring fastener not easy to rotate

Abstract

The utility model relates to a wiring fastener not easy to rotate, which comprises a base and a fixing block, a central hole is arranged at the center of the base, the fixing block is provided with a central tube opposite to the central hole, and a threaded hole is arranged in the central tube. The base is provided with an alignment groove opposite to the extending part, and the extending part and the alignment groove form fixation of the fixing block and the base in the circumferential direction.

Description

Technical Field

[0001] The utility model relates to a wiring fastener, in particular to a wiring fastener that is not easy to rotate. Background Art

[0002] A relay socket is an external accessory of a relay, which serves to transition the relay contacts into wiring terminals. Usually, the lead-out pins of the relay are inserted into the jacks of the relay socket for use. If the relay is damaged, only the damaged relay needs to be pulled out and replaced, which is very convenient to use.

[0003] During installation, the wire head is placed on the nut seat of the relay socket, and then the screw is screwed in to fix the wire head. However, during this process, the nut seat may be driven to rotate by the screw, thus affecting the fixing of the wire head. Summary of the Utility Model

[0004] Aiming at the deficiencies existing in the prior art, the purpose of the utility model is to provide a wiring fastener that is not easy to rotate.

[0005] To achieve the above purpose, the utility model provides the following technical solutions: It includes a base and a fixing block. A central hole is provided in the center of the base, and the fixing block is provided with a central tube opposite to the central hole. A threaded hole is provided in the central tube. It is characterized in that: the fixing block is provided with an extending portion extending downward, and the base is provided with a positioning groove opposite to the extending portion. The extending portion and the positioning groove constitute the circumferential fixation of the fixing block and the base.

[0006] By adopting the above technical solutions, the fixing block is inserted into the positioning groove of the base through the extending portion, and the inner wall of the extending portion is closely attached to the inner wall of the positioning groove to form circumferential limitation; when the screw is screwed into the threaded hole of the central tube, the fixing block cannot rotate with the screw due to the cooperation of the extending portion and the positioning groove, thus preventing the base from loosening.

[0007] The utility model is further set as: the fixing block is U-shaped, and the front side and the rear side of the fixing block are respectively provided with extending plates extending downward, and the extending portion is located below the extending plate.

[0008] By adopting the above technical solutions, the shape of the fixing block is set as a U-shaped structure, which enhances the overall rigidity of the fixing block and prevents deformation when the screw is tightened.

[0009] The utility model is further set as: the number of the extending portions is four, and they are symmetrically arranged on the left side and the right side of the extending plate.

[0010] By adopting the above technical solutions, when the number of the extending portions is four and they are symmetrically distributed on the left and right sides of the extending plate, the circumferential torque can be evenly borne.

[0011] The present utility model is further configured such that: the number of the extension parts is three, which are respectively arranged on the left side and the right side of one extension plate and the middle part of the other extension plate.

[0012] By adopting the above technical solution, when the number of the extension parts is three and they are asymmetrically distributed, it can adapt to the scenario of offset installation of the wire, avoiding interference.

[0013] The present utility model is further configured such that: an introduction inclined surface with a gradually decreasing cross-sectional area from top to bottom is further arranged at the top of the central tube.

[0014] By adopting the above technical solution, the introduction inclined surface at the top of the central tube can guide the screw to vertically enter the threaded hole, reducing the lateral force caused by the screw skew, and further avoiding the rotation of the fixing block due to uneven force.

[0015] The present utility model is further configured such that: the alignment groove is adapted to the shape of the extension part.

[0016] Beneficial effects: Through the circumferential fixation of the extension part and the alignment groove, the rigid support of the U-shaped structure, and the guiding design of the introduction inclined surface, this wire connection fastener effectively inhibits the rotation of the fixing block during the process of screwing the screw, ensuring that the wire head is stably pressed, and solving the technical problem that the traditional nut seat is prone to rotate with the screw, resulting in installation failure; meanwhile, the flexibility of the distribution of the extension part expands the adaptability of its application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the present utility model with 4 extension parts;

[0018] Figure 2 is an exploded view of the present utility model with 4 extension parts;

[0019] Figure 3 is a schematic structural diagram of the present utility model with 3 extension parts;

[0020] Figure 4 is an exploded view of the present utility model with 3 extension parts;

[0021] Figure 5 is a schematic structural diagram of the prior art in the present utility model.

[0022] In the figure: 1. Base; 11. Central hole; 12. Alignment groove; 2. Fixing block; 21. Central tube; 22. Threaded hole; 23. Extension part; 24. Extension plate; 25. Introduction inclined surface. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative work shall fall within the protection scope of the present utility model.

[0024] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model 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, and therefore cannot be understood as a limitation to the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0025] As Figures 1-5 shown, the present utility model discloses a wiring fastener that is not easily rotated, including a base 1 and a fixing block 2. A central hole 11 is provided at the center of the base 1, and a central tube 21 opposite to the central hole 11 is provided on the fixing block 2. A threaded hole 22 is provided inside the central tube 21. The feature is that: the fixing block 2 is provided with an extending portion 23 extending downward, and a positioning groove 12 opposite to the extending portion 23 is provided on the base 1. The extending portion 23 and the positioning groove 12 constitute the circumferential fixation of the fixing block 2 and the base 1. The fixing block 2 is inserted into the positioning groove 12 of the base 1 through the extending portion 23, and the inner wall of the extending portion 23 is in close fit with the inner wall of the positioning groove 12 to form circumferential limitation. When a screw is screwed into the threaded hole 22 of the central tube 21, the fixing block 2 cannot rotate with the screw due to the cooperation of the extending portion 23 and the positioning groove 12, thereby preventing the base 1 from loosening.

[0026] The fixing block 2 is U-shaped. The front side and the rear side of the fixing block 2 respectively have extending plates 24 extending downward. The extending portion 23 is located below the extending plates 24. The shape of the fixing block 2 is set as a U-shaped structure to enhance the overall rigidity of the fixing block 2 and prevent deformation when the screw is tightened.

[0027] The number of the extending portions 23 is four, symmetrically arranged on the left and right sides of the extending plates 24. When the number of the extending portions 23 is four and symmetrically distributed on the left and right sides of the extending plates 24, the circumferential torque can be evenly borne.

[0028] The number of the extending portions 23 is three, which are respectively arranged on the left and right sides of one extending plate 24 and the middle of the other extending plate 24. When the number of the extending portions 23 is three and asymmetrically distributed, it can adapt to the scenario of offset installation of the wire and avoid interference.

[0029] At the top of the central tube 21, there is also an introduction inclined surface 25 with a gradually decreasing cross-sectional area from top to bottom. The introduction inclined surface 25 at the top of the central tube 21 can guide the screw to vertically enter the threaded hole 22, reduce the lateral force caused by the screw skew, and further prevent the fixing block 2 from rotating due to uneven force.

[0030] The alignment groove 12 is adapted to the shape of the extension part 23.

[0031] Working process: Align the fixing block 2 with the base 1, insert the central tube 21 of the fixing block 2 into the central hole 11 of the base 1, and embed the protruding structure on the outer side of the U-shaped extension plate 24 of the extension part 23 of the fixing block 2 into the alignment groove 12 of the base 1 to form a tight circumferential fit. At this time, the extension part 23 contacts the inner wall of the alignment groove 12, restricting the rotational freedom of the fixing block 2 in the horizontal direction. Then, place the wire head on the fixing block 2, and then screw the screw vertically into the threaded hole 22 from the introduction inclined surface 25 at the top of the central tube 21. The conical design of the introduction inclined surface 25 guides the screw to be accurately aligned, reducing the lateral force caused by skew. During the downward screwing of the screw, its head presses the wire head to complete the mechanical fixation of the wire.

Claims

1. A wiring fastener that is not easily rotated, comprising a base (1) and a fixing block (2). A central hole (11) is provided at the center of the base (1), and a central tube (21) opposite to the central hole (11) is provided on the fixing block (2). A threaded hole (22) is provided inside the central tube (21), and its characteristics are as follows: The described fixing block (2) is provided with an extension part (23) extending downward, and a positioning groove (12) opposite to the extension part (23) is arranged on the base (1). The extension part (23) and the positioning groove (12) form the circumferential fixation of the fixing block (2) and the base (1).

2. The non-rotatable wiring fastener according to claim 1, wherein: The described fixing block (2) is U-shaped. The front side and the rear side of the fixing block (2) respectively have extension plates (24) extending downward, and the extension part (23) is located below the extension plates (24).

3. The non-rotatable wiring fastener according to claim 2, wherein: The number of the extension parts (23) is four, symmetrically arranged on the left side and the right side of the extension plates (24).

4. The non-rotatable wiring fastener according to claim 2, wherein: The number of the extension parts (23) is three, respectively arranged on the left side and the right side of one extension plate (24) and the middle part of the other extension plate (24).

5. The non-rotatable wiring fastener according to claim 1, characterized in that: An introduction inclined surface (25) with a gradually decreasing cross-sectional area from top to bottom is further arranged at the top of the central tube (21).

6. The non-rotatable wiring fastener according to claim 1, wherein: The positioning groove and the extension part are adapted in shape to each other.

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