Inner hexagonal screw

Abstract

The utility model relates to an inner hexagonal screw which comprises a screw rod and a screw cap arranged at the end of the screw rod, a hexagonal groove is formed in the upper end of the screw cap, a hexagonal baffle corresponding to the hexagonal groove in shape is arranged in the hexagonal groove in an up-down moving mode, a through groove communicated with the hexagonal groove is formed in one side of the screw cap in a penetrating mode, and a through hole is formed in the other side of the screw cap. An elastic piece is arranged in the through groove, the lower end of the hexagonal baffle is connected with the elastic piece, and the upper end face of the hexagonal baffle can be flush with the end face of the nut or protrude out of the end face of the nut through elastic supporting of the elastic piece; when the hexagon socket head cap screw needs to be screwed, a hexagon wrench can be directly aligned with the hexagon baffle and inserted into the hexagon baffle, the elastic piece is contracted at the moment, the hexagon wrench is inserted into the hexagon groove, then the hexagon socket head cap screw can be screwed, and after the hexagon wrench is pulled out, the hexagon socket head cap screw can be screwed. And the hexagonal baffle resets upwards under the action of the elastic sheet, so that the operation is simple, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of screw technology, and in particular to an internal hexagon screw. Background Art

[0002] A hex socket head cap screw is a type of fastener consisting of a head and a screw. The head has an internal hexagonal groove for a hex wrench to be inserted and rotated to tighten or loosen the screw.

[0003] Because the internal hexagonal groove is exposed, it is prone to accumulating dust and impurities, which can affect the disassembly of the screw. Therefore, to address this issue, most existing screws have a baffle at the internal hexagonal groove to prevent dust and impurities from entering. For example, a hexagonal socket head cap screw, as described in CN213808388U, includes an internal hexagonal through-hole with a protective cap inserted into it. When the screw needs to be disassembled or installed, the protective cap is removed first. The protective cap prevents waste materials from being left on the internal hexagonal through-hole. However, repeated operations on the protective cap increase the overall working time and reduce efficiency. Utility Model Content

[0004] The present invention aims to at least partially solve one of the problems existing in the prior art. To this end, the present invention proposes an internal hex screw.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An internal hexagonal screw includes a screw rod and a nut disposed at the end of the screw rod. The upper end of the nut is provided with a hexagonal groove. A hexagonal baffle corresponding to the shape of the hexagonal groove is movably disposed in the hexagonal groove. A through groove communicating with the hexagonal groove is provided through one side of the nut. An elastic plate is disposed in the through groove. The lower end of the hexagonal baffle is connected to the elastic plate, and the upper end face of the hexagonal baffle is flush with or protrudes from the end face of the nut due to the elastic support of the elastic plate.

[0007] In some embodiments, the elastic sheet is W-shaped, including an inverted V-shaped sheet. The upper end of the inverted V-shaped sheet is located in a hexagonal groove and is used to support the hexagonal baffle. The lower ends of the inverted V-shaped sheet extend into through grooves on both sides and are provided with side baffles.

[0008] In some embodiments, a post is provided at the lower end of the hexagonal baffle, and a hole is provided at the upper end of the inverted V-shaped piece, with the post inserted into the hole.

[0009] In some embodiments, an annular flange is provided on the outer wall of the insertion post.

[0010] In some embodiments, a slot is provided at the middle position of the lower end of the insertion post.

[0011] In some embodiments, notches are provided on both outer side walls at the upper end of the through groove, and the upper end of the side baffle is located within the notches.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: By setting elastic plates in the hexagonal groove and through groove, and supporting the hexagonal baffle with the elastic plates, the upper end face of the hexagonal baffle is flush with or protrudes from the end face of the nut, thereby preventing dust and impurities from falling into the hexagonal groove and ensuring the normal use of the internal hexagonal screw. When it is necessary to tighten the internal hexagonal screw, the hexagonal wrench can be directly aligned with the hexagonal baffle and inserted. At this time, the elastic plate retracts, the hexagonal wrench is inserted into the hexagonal groove, and the internal hexagonal screw can be tightened. After the hexagonal wrench is pulled out, the hexagonal baffle returns to its original position under the action of the elastic plate. The operation is simple and the work efficiency is improved. Attached Figure Description

[0013] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0014] Figure 2 This is a cross-sectional view of the present invention;

[0015] Figure 3 This is a schematic diagram of the structure of the hexagonal baffle and elastic sheet of this utility model. DETAILED DESCRIPTION

[0016] The following detailed description provides various embodiments or examples for implementing this utility model. Of course, these are merely embodiments or examples and are not intended to be limiting. Additionally, repeated reference numerals, such as repeated numbers and / or letters, may be used in different embodiments. These repetitions are for the purpose of simple and clear description of this utility model and do not represent a specific relationship between the different embodiments and / or structures discussed.

[0017] like Figures 1-3 The illustrated hexagonal socket screw includes a screw 1 and a nut 2 located at the end of the screw 1. The upper end of the nut 2 is provided with a hexagonal groove 3. A hexagonal baffle 4, corresponding to the shape of the hexagonal groove 3, is movably disposed within the hexagonal groove 3. A through groove 5, communicating with the hexagonal groove 3, is provided through one side of the nut 2. An elastic piece 6 is disposed within the through groove 5. The lower end of the hexagonal baffle 4 is connected to the elastic piece 6, and the upper end face of the hexagonal baffle 4 can be flush with or protrude from the end face of the nut 2 due to the elastic support of the elastic piece 6.

[0018] Based on the above structure, dust and impurities can be prevented from falling into the hexagonal groove 3, ensuring the normal use of the internal hexagonal screws. When it is necessary to tighten the internal hexagonal screws, the hex wrench can be directly aligned with the hexagonal baffle 4 and inserted. At this time, the elastic plate 6 retracts, and the hex wrench is inserted into the hexagonal groove 3, thus allowing the internal hexagonal screws to be tightened. After the hex wrench is pulled out, the hexagonal baffle 4 returns to its original position under the action of the elastic plate 6. The operation is simple and improves work efficiency.

[0019] See Figure 2 , Figure 3 As shown, the elastic sheet 6 is W-shaped, including an inverted V-shaped sheet 21. The upper end of the inverted V-shaped sheet 21 is located in the hexagonal groove 3 and is used to support the hexagonal baffle 4. The lower ends of the inverted V-shaped sheet 21 extend into the through groove 5 on both sides and are provided with side baffles 22.

[0020] Furthermore, a post 31 is provided at the lower end of the hexagonal baffle 4, and a hole 32 is provided at the upper end of the inverted V-shaped piece 21. The post 31 is inserted into the hole 32. Thus, when connecting the hexagonal baffle 4 and the elastic piece 6, the post 31 at the lower end of the hexagonal baffle 4 can be directly inserted into the hole 32 at the upper end of the inverted V-shaped piece 21 to achieve the connection between the hexagonal baffle 4 and the elastic piece 6.

[0021] Furthermore, an annular flange 41 is provided on the outer wall of the insertion post 31, which can restrict the movement of the inverted V-shaped piece 21 and improve the stability after the hexagonal baffle 4 and the elastic piece 6 are connected; a slot 51 is provided at the middle position of the lower end of the insertion post 31, which can facilitate the insertion post 31 to be inserted into the insertion hole 32.

[0022] See Figure 1 , Figure 2 As shown, notches 61 are provided on both outer side walls at the upper end of the through groove 5. The upper end of the side baffle 22 is located in the notch 61, which can position and fix the elastic piece 6. In addition, the side baffle 22 can also prevent dust and impurities from entering the hexagonal groove 3 from the through groove 5.

[0023] Based on the accompanying drawings and the foregoing display and description of the basic principles, main features, and advantages of this utility model, those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A hexagonal socket head cap screw, comprising a screw rod (1) and a nut (2) disposed at the end of the screw rod (1), wherein the upper end of the nut (2) is provided with a hexagonal groove (3), characterized in that: A hexagonal baffle (4) corresponding to the shape of the hexagonal groove (3) is movably arranged in the hexagonal groove (3). A through groove (5) communicating with the hexagonal groove (3) is provided through one side of the nut (2). An elastic piece (6) is provided in the through groove (5). The lower end of the hexagonal baffle (4) is connected to the elastic piece (6), and the upper end face of the hexagonal baffle (4) is flush with or protrudes from the end face of the nut (2) through the elastic support of the elastic piece (6).

2. The internal hexagon screw according to claim 1, characterized in that: The elastic sheet (6) is W-shaped, including an inverted V-shaped sheet (21). The upper end of the inverted V-shaped sheet (21) is located in the hexagonal groove (3) and is used to support the hexagonal baffle (4). The lower ends of the inverted V-shaped sheet (21) extend into the through groove (5) and are provided with side baffles (22).

3. The internal hexagon screw according to claim 2, characterized in that: A post (31) is provided at the lower end of the hexagonal baffle (4), and a socket (32) is provided at the upper end of the inverted V-shaped piece (21). The post (31) is inserted into the socket (32).

4. The internal hexagon screw according to claim 3, characterized in that: A circular flange (41) is provided on the outer wall of the insert (31).

5. The internal hexagon screw according to claim 4, characterized in that: A slot (51) is provided at the middle position of the lower end of the insert (31).

6. The internal hexagon screw according to claim 2, characterized in that: Notches (61) are provided on both outer side walls at the upper end of the through groove (5), and the upper end of the side baffle (22) is located in the notches (61).

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