A screw for a terminal block

Abstract

This utility model provides a screw for a junction box, relating to the field of screw technology. It includes a nut and a screw rod connected together. An auxiliary tightening structure is provided on the end face of the nut, and a rotation limiting structure is provided on the side of the nut. A locking structure is provided on the side wall of the screw rod away from the nut. The screw rod can pass through the junction box cover and connect to the junction box body through the locking structure. The auxiliary tightening structure facilitates the operator in tightening the screw, providing auxiliary assistance and simplifying daily maintenance. The rotation limiting structure is stopped when it reaches its limit position, preventing further rotation and indicating that the screw is fully installed, thus preventing unlimited continuous rotation. The screw rod connects to the junction box body through the locking structure, achieving a locking effect and ensuring a secure connection between the cover and the body. This screw has a wider range of applications, and installation and maintenance can be achieved using ordinary tools, making it more convenient.

Description

Technical Field

[0001] This utility model relates to the field of screw technology, and in particular to a screw for a junction box. Background Technology

[0002] Junction box covers are typically secured to the box body with traditional screws, which can easily loosen or fall off during use, causing short circuits and electrical hazards. To address this, some junction boxes on the market use non-standard screws, which usually require special tools for removal. However, ordinary users often lack the necessary tools, making maintenance inconvenient. If ordinary users attempt to disassemble the box themselves, they may accidentally connect the live, neutral, or ground wires, leading to electric shock or short circuit accidents. Utility Model Content

[0003] The purpose of this utility model is to provide a screw for a junction box to solve the technical problems existing in the prior art. The preferred technical solutions among the various technical solutions provided by this utility model and the numerous technical effects they produce are detailed below.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A screw for a junction box includes a nut and a screw rod connected together. The end face of the nut is provided with an auxiliary screwing structure, and the side of the nut is provided with a rotation limiting structure. The side wall of the screw rod away from the nut is provided with a locking structure. The screw rod can pass through the cover of the junction box and is connected to the box body of the junction box through the locking structure.

[0006] Preferably, the auxiliary screwing structure is a straight groove structure, and the auxiliary screwing structure is located at the center of the end face of the nut.

[0007] Preferably, an auxiliary connection hole is provided through the side of the nut.

[0008] Preferably, the end face of the nut is provided with a rotation direction auxiliary mark.

[0009] Preferably, the end face of the nut is provided with a rotation point auxiliary mark.

[0010] Preferably, the rotation limiting structure is an arc-shaped groove structure, and the outer diameter of the rotation limiting structure is smaller than the outer diameter of the nut.

[0011] Preferably, there are two rotation limiting structures, and the two rotation limiting structures are symmetrically arranged along the axis.

[0012] Preferably, the end of the screw near the nut is provided with a cover connection structure, and the screw is detachably connected to the cover through the cover connection structure.

[0013] Preferably, the lid connection structure is a snap fastener, and pressing the snap fastener inward can release the connection between the lid connection structure and the lid.

[0014] Preferably, the locking structure includes two symmetrically arranged locking bodies, each locking body forming a protrusion relative to the outer wall of the screw.

[0015] The beneficial effects of this utility model are as follows: by providing an auxiliary screw-tightening structure on the end face of the nut, the auxiliary screw-tightening structure can facilitate the operator to screw-tighten the screw, play an auxiliary role, and thus make daily maintenance more convenient.

[0016] By setting a rotation limit structure on the side of the nut, and setting a limit block on the cover of the junction box that cooperates with the rotation limit structure, the rotation limit structure will be limited by the limit block when it rotates to the limit position during the screw-tightening process, and will not be able to continue rotating. This means that the screw is installed in place, thus preventing the screw from rotating indefinitely.

[0017] By providing a locking structure on the side wall of the screw away from the nut, the screw can pass through the cover of the junction box and then connect to the box body through the locking structure, achieving a locking effect and making the cover and box body firmly connected.

[0018] Screws have a wider range of applications, and can be easily installed and maintained using ordinary tools. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0020] Figure 1 This is a structural diagram of the screw of this utility model;

[0021] Figure 2 This is a structural diagram of the screw of this utility model from another perspective;

[0022] Figure 3 This is a structural diagram showing the connection between the screw, the lid, and the body of the box according to this utility model.

[0023] Figure 4This is a structural diagram showing the connection between the screw and the box lid of this utility model;

[0024] Figure 5 This is a structural diagram of the box lid of this utility model;

[0025] Figure 6 This is a structural diagram of the box body of this utility model;

[0026] In the diagram: 1. Nut; 11. Auxiliary tightening structure; 12. Rotation limiting structure; 121. Limiting plane; 13. Auxiliary connecting hole; 14. Auxiliary marking for rotation direction; 15. Auxiliary marking for rotation point.

[0027] 2. Screw; 21. Locking structure; 22. Lid connection structure;

[0028] 3. Box lid; 31. Limiting block; 32. Box lid connecting hole; 33. Indicator part;

[0029] 4. Box body; 41. Connecting hole; 411. Mating part. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0031] In the description of this utility model, it should be understood that the terms "center," "side," "length," "width," "height," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and "side," etc., indicate the orientation or positional relationship based on the appendix. Figure 1 The orientations or positional relationships shown are for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0032] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] Reference Figures 1 to 6 This utility model provides a screw for a junction box, including a nut 1 and a screw 2 connected together. The nut 1 and the screw 2 are preferably integrally formed to improve structural strength. The junction box is divided into a cover 3 and a body 4. The screw is used to connect the cover 3 and the body 4.

[0034] The end face of the nut 1 is provided with an auxiliary screw-tightening structure 11, which can facilitate the operator to screw in the screw and play an auxiliary role, thus making daily maintenance more convenient.

[0035] The nut 1 has a rotation limit structure 12 on its side, and the junction box cover 3 has a limit block 31 that cooperates with the rotation limit structure 12. During the screw-screwing process, the rotation limit structure 12 will be limited by the limit block 31 when it rotates to the limit position and cannot continue to rotate. This means that the screw is installed in place and the screw is prevented from rotating indefinitely.

[0036] A locking structure 21 is provided on the side wall of the screw 2 away from the nut 1. The screw 2 can pass through the cover 3 of the junction box and then connect to the box body 4 of the junction box through the locking structure 21 to achieve a locking effect, so that the cover 3 and the box body 4 are firmly connected.

[0037] Screws have a wider range of applications, and can be easily installed and maintained using ordinary tools.

[0038] As an optional implementation, the auxiliary screwing structure 11 is a straight groove structure. The auxiliary screwing structure 11 is located at the center of the end face of the nut 1. The straight groove structure is simpler, and the operator can use a variety of tools to screw it, such as a straight screwdriver, or other common tools that can be matched with the straight shape in daily life, which is convenient for daily maintenance scenarios.

[0039] As an optional implementation, an auxiliary connection hole 13 is provided through the side of the nut 1. After the screw is installed in place with the cover 3 and the box body 4, the auxiliary connection hole 13 can be connected with the pre-set cover connection hole 32 on the cover 3. On this basis, if necessary, an external structure such as a rope can be passed through the auxiliary connection hole 13 and the cover connection hole 32 at the same time to form a further connection between the nut 1, the cover 3 and the box body 4. At this time, the screw cannot completely disconnect from the cover 3 and the box body 4, preventing the screw from falling off.

[0040] As an optional implementation, a rotation direction auxiliary mark 14 is provided on the end face of the nut 1. In this embodiment, the rotation direction auxiliary mark 14 is preferably an arc-shaped indicator arrow. The indicator arrow is integrally formed on the end face of the nut 1, which can prompt the operator on the specific rotation and tightening direction, making it more user-friendly.

[0041] As an optional implementation, a rotation point auxiliary mark 15 is provided on the end face of the nut 1. In this embodiment, the rotation point auxiliary mark 15 is preferably a triangular indicator mark. The indicator mark is integrally formed on the end face of the nut 1. And through the prompt part 33 provided at the corresponding position of the cover 3, the rotation point auxiliary mark 15 can reach different prompt parts 33 during rotation to correspond to the locked position and the unlocked position respectively, which is more user-friendly.

[0042] As an optional implementation, the rotation limiting structure 12 is an arc-shaped groove structure. The outer diameter of the rotation limiting structure 12 is smaller than the outer diameter of the nut 1. Therefore, a limiting plane 121 can be formed at the connection. During the screw-tightening process, when the rotation limiting structure 12 rotates to the limit position, the limiting plane 121 contacts the limiting block 31 and is limited by the limiting block 31, so that it cannot continue to rotate. At this time, it means that the screw is installed in place, avoiding the screw from rotating continuously without restriction.

[0043] In addition, the structure of the groove can reduce weight, and when the screw is made of plastic, it can prevent structural shrinkage at the nut 1.

[0044] In this embodiment, the number of rotation limiting structures 12 is preferably two, and the two rotation limiting structures 12 are symmetrically arranged along the axis. This arrangement can make the structure more uniformly stressed.

[0045] Furthermore, when there are two rotation limit structures 12, the number of limit blocks 31 remains one, and there is no need to set two accordingly.

[0046] As an optional implementation, a cover connection structure 22 is provided at one end of the screw 2 near the nut 1. The screw 2 is detachably connected to the cover 3 through the cover connection structure 22. In actual installation and use, the screw and the cover 3 can be movably connected through the cover connection structure 22 first, and then the cover 3 and the screw can be placed together on the box body 4. The screw can be screwed with a tool to connect the screw to the box body 4.

[0047] In this embodiment, the lid connecting structure 22 is preferably a snap fastener. Pressing the snap fastener inward can release the connection between the lid connecting structure 22 and the lid 3.

[0048] As an optional implementation, the locking structure 21 includes two symmetrically arranged locking bodies. The locking bodies form a protrusion relative to the outer wall of the screw 2. By providing a mating part 411 on the connecting hole 41 of the housing 4, the locking bodies can lock with the mating part 411.

[0049] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A screw for a terminal box comprising a nut (1) and a screw rod (2) connected to each other, characterized in that, An auxiliary screwing structure (11) is provided on the end face of the nut (1), a rotation limiting structure (12) is provided on the side of the nut (1), a locking structure (21) is provided on the side wall of the screw (2) away from the nut (1), and the screw (2) can pass through the cover (3) of the junction box and be connected to the box body (4) of the junction box through the locking structure (21).

2. The screw for a junction box according to claim 1, wherein The auxiliary screwing structure (11) is a straight groove structure, and the auxiliary screwing structure (11) is located at the center of the end face of the nut (1).

3. The screw for a junction box according to claim 1, characterized in that, An auxiliary connection hole (13) is provided through the side of the nut (1).

4. The screw for a junction box according to claim 1, characterized in that, The end face of the nut (1) is provided with a rotation direction auxiliary mark (14).

5. The screw for a junction box according to claim 1, characterized in that, The end face of the nut (1) is provided with a rotation point auxiliary mark (15).

6. The screw for a junction box according to claim 1, characterized in that, The rotation limiting structure (12) is an arc-shaped groove structure, and the outer diameter of the rotation limiting structure (12) is smaller than the outer diameter of the nut (1).

7. The screw for a junction box according to claim 1, characterized in that, The number of rotation limiting structures (12) is two, and the two rotation limiting structures (12) are symmetrically arranged along the axis.

8. The screw for a junction box according to claim 1, characterized in that, The screw (2) is provided with a cover connection structure (22) at one end near the nut (1), and the screw (2) is detachably connected to the cover (3) through the cover connection structure (22).

9. The screw for a junction box according to claim 8, characterized in that, The lid connection structure (22) is a snap fastener. Pressing the snap fastener inward can release the connection between the lid connection structure (22) and the lid (3).

10. The screw for a junction box according to claim 1, characterized in that, The locking structure (21) includes two symmetrically arranged locking bodies, each of which forms a protrusion relative to the outer wall of the screw (2).

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