Hexagonal screw

Abstract

The utility model relates to a hexagonal screw which comprises a screw rod and a hexagonal nut arranged at the upper end of the screw rod, a round hole is coaxially formed in the lower end of the screw rod, a moving piece is arranged in the round hole in an up-down moving mode, rectangular through grooves communicated with the round hole are symmetrically formed in the side wall of the screw rod, and the rectangular through grooves are communicated with the round hole. A rectangular through groove is formed in the screw rod, a sliding block is arranged in the rectangular through groove in the radial direction of the screw rod in a sliding mode, a rubber block is arranged at the outer end of the sliding block, a transmission assembly is connected between the moving part and the sliding block, and when the moving part moves inwards, the sliding block can be driven by the transmission assembly to move outwards along the rectangular through groove; when the screw is installed and the moving part at the bottom end of the screw rod abuts against the bottom wall of the inner end of the threaded hole, the sliding block can be driven by the transmission assembly to move outwards along the rectangular through groove, so that the rubber block abuts against the inner wall of the threaded hole, meanwhile, the hexagon nut is pressed on a fixed part, and the screw and the part are fastened more tightly; and screw loosening caused by machine vibration is prevented.

Description

Technical Field

[0001] The utility model relates to a hexagonal screw. Background Art

[0002] Hexagonal screws are classified as either external or internal hexagonal screws, and are a type of fastener consisting of a head and a shank. However, existing hexagonal screw fasteners have a simple structure and are prone to loosening after long-term use, thus losing their tightening function and posing a potential safety hazard. Utility Model Content

[0003] The present invention aims to solve one of the problems existing in the existing related technologies to at least a certain extent. To this end, the present invention provides a hexagonal screw that can improve the stability of the screw after tightening.

[0004] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0005] A hexagonal screw includes a screw and a hexagonal nut provided at the upper end of the screw. A circular hole is coaxially provided at the lower end of the screw. A moving part is provided in the circular hole for moving up and down. A rectangular through groove connected to the circular hole is symmetrically provided on the side wall of the screw. A sliding block is provided in the rectangular through groove for sliding radially along the screw. A rubber block is provided at the outer end of the sliding block. A transmission assembly is connected between the moving part and the sliding block. When the moving part moves inward, the sliding block can be driven to move outward along the rectangular through groove by the transmission assembly.

[0006] In some embodiments, a recessed groove coaxial with the circular hole is provided at the lower end of the screw, a flange is provided at the outer end of the movable part, the flange is movable up and down in the recessed groove, and a spring is provided between the flange and the recessed groove.

[0007] In some embodiments, a guide block is provided on the outer side of the flange, a longitudinal slide groove is provided on the side wall of the sink, and the guide block slides up and down in the longitudinal slide groove.

[0008] In some embodiments, the transmission assembly includes a connecting rod, and both ends of the connecting rod are hinged to the moving part and the sliding block respectively.

[0009] In some embodiments, a lower hinge shaft is provided at the lower end of the connecting rod, a cylinder is provided at the upper end of the connecting rod, an upper hinge shaft is rotatably connected inside the cylinder, a C-shaped block is provided on the inner side of the sliding block, the lower hinge shaft is hinged on the moving part, and the upper hinge shaft is clamped in the C-shaped block.

[0010] In some embodiments, a hexagonal recess is provided at the end of the hexagonal nut.

[0011] In some embodiments, a slotted groove is further provided on the end surface of the hexagonal nut, and the slotted groove is communicated with the inner hexagonal groove.

[0012] Compared with the prior art, the beneficial effect of the present invention is that when the screw is installed, when the moving part at the bottom end of the screw rests against the bottom wall of the inner end of the threaded hole, the sliding block can be driven by the transmission assembly to move outward along the rectangular through groove, thereby being tightened against the inner wall of the threaded hole through the rubber block, and at the same time the hexagonal nut is pressed against the fixed part, thereby making the screw and the part more tightened, preventing the screw from loosening due to machine vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0014] Figure 2 This is a schematic cross-sectional view of the utility model;

[0015] Figure 3 It is a partial cross-sectional structural schematic diagram of the utility model;

[0016] Figure 4 This is an exploded schematic diagram of the connecting rod and sliding block of the utility model. DETAILED DESCRIPTION

[0017] The following detailed description provides various embodiments or examples for implementing the present invention. These are, of course, merely examples and are not intended to be limiting. Furthermore, repeated reference numerals, such as repeated numbers and / or letters, may be used in different embodiments. This repetition is for simplicity and clarity in describing the present invention and does not imply a specific relationship between the various embodiments and / or configurations discussed.

[0018] The following figures and specific embodiments further describe the present invention: Figure 1-Figure 4 The hexagonal screw shown includes a screw rod 1 and a hexagonal nut 2 provided at the upper end of the screw rod 1. A circular hole 3 is coaxially provided at the lower end of the screw rod 1. A moving part 7 is provided in the circular hole 3 so as to move up and down. A rectangular through groove 4 connected to the circular hole 3 is symmetrically provided on the side wall of the screw rod 1. A sliding block 5 is provided in the rectangular through groove 4 so as to slide radially along the screw rod 1. A rubber block 6 is provided at the outer end of the sliding block 5. A transmission assembly is connected between the moving part 7 and the sliding block 5. When the moving part 7 moves inward, the sliding block 5 can be driven by the transmission assembly to move outward along the rectangular through groove 4.

[0019] In the utility model, when the screw is installed, when the moving part 7 at the bottom end of the screw rod 1 abuts against the bottom wall of the inner end of the threaded hole, the sliding block 5 can be driven by the transmission assembly to move outward along the rectangular through groove 4, thereby being tightened against the inner wall of the threaded hole through the rubber block 6, and at the same time the hexagonal nut 2 is pressed against the fixed part, thereby making the screw and the part more tightened, preventing the screw from loosening due to machine vibration.

[0020] It should be noted that when the screw is tightened, that is, the hexagonal nut 2 is in contact with the fixed part, the moving part 7 will move a short distance inward, thereby allowing the sliding block 5 to move a short distance outward, allowing the rubber block 6 at the outer end to tightly rest against the inner wall of the threaded hole.

[0021] See also Figure 2 、 Figure 3 As shown, a recessed groove 21 coaxial with the circular hole 3 is provided at the lower end of the screw 1, and a flange 22 is provided at the outer end of the movable member 7. The flange 22 is movable up and down in the recessed groove 21, and a spring 23 is provided between the flange 22 and the recessed groove 21.

[0022] By setting the spring 23, the moving member 7 and the flange 22 can maintain the outward movement, while the rubber block 6 on the sliding block 5 does not protrude from the outer wall of the screw 1, ensuring that the screw 1 can be twisted normally.

[0023] Furthermore, a guide block 31 is provided on the outer side of the flange 22, and a longitudinal slide groove 32 is provided on the side wall of the sink 21. The guide block 31 slides up and down in the longitudinal slide groove 32, which can play a guiding role, so that the movable part 7 and the flange 22 can move smoothly up and down along the circular hole 3.

[0024] See also Figure 2-Figure 4 As shown, the transmission assembly includes a connecting rod 41, and both ends of the connecting rod 41 are hinged to the moving member 7 and the sliding block 5 respectively.

[0025] After the two connecting rods 41 are installed, they form a V-shaped structure.

[0026] Furthermore, a lower hinge shaft 51 is provided at the lower end of the connecting rod 41, a cylinder 52 is provided at the upper end of the connecting rod 41, an upper hinge shaft 53 is rotatably connected in the cylinder 52, and a C-shaped block 54 is provided on the inner side of the sliding block 5, the lower hinge shaft 51 is hinged on the moving part 7, and the upper hinge shaft 53 is clamped in the C-shaped block 54.

[0027] The lower hinge shaft 51 at the lower end of the connecting rod 41 has been hingedly installed with the moving part 7 in advance. Then, when it is connected and installed with the sliding block 5, the cylinder 52 and the upper hinge shaft 53 on the connecting rod 41 pass through the circular hole 3 and then directly snap into the C-shaped block 54 of the sliding block 5.

[0028] In the present invention, a hexagonal groove 61 is provided at the end of the hexagonal nut 2, so that the screw can be driven to rotate by a hexagonal wrench.

[0029] Furthermore, a slotted slot 71 is provided on the end face of the hexagonal nut 2, and the slotted slot 71 is connected to the inner hexagonal groove 61; thus, the screw can be screwed not only with a matching inner hexagonal tool, but also with a traditional slotted screwdriver, which is more convenient to use.

[0030] The basic principles and main features of the present invention and the advantages of the present invention are shown and described above in conjunction with the accompanying drawings. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A hexagonal screw, comprising a screw rod (1) and a hexagonal nut (2) disposed at the upper end of the screw rod (1). Features: A circular hole (3) is coaxially arranged at the lower end of the screw (1), a moving member (7) is movably arranged in the circular hole (3), a rectangular through groove (4) connected to the circular hole (3) is symmetrically arranged on the side wall of the screw (1), a sliding block (5) is arranged in the rectangular through groove (4) to slide radially along the screw (1), a rubber block (6) is arranged at the outer end of the sliding block (5), a transmission component is connected between the moving member (7) and the sliding block (5), and when the moving member (7) moves inward, the sliding block (5) can be driven by the transmission component to move outward along the rectangular through groove (4).

2. The hexagonal screw according to claim 1, Features: A sink groove (21) coaxially arranged with the circular hole (3) is arranged at the lower end of the screw rod (1), a flange (22) is arranged at the outer end of the movable member (7), the flange (22) is movably arranged in the sink groove (21) up and down, and a spring (23) is arranged between the flange (22) and the sink groove (21).

3. The hexagonal screw according to claim 2, Features: A guide block (31) is arranged on the outer side of the flange (22), a longitudinal slide groove (32) is arranged on the side wall of the sink groove (21), and the guide block (31) is slidably arranged in the longitudinal slide groove (32) up and down.

4. The hexagonal screw according to claim 1, Features: The transmission assembly comprises a connecting rod (41), and two ends of the connecting rod (41) are respectively hinged to the moving part (7) and the sliding block (5).

5. The hexagonal screw according to claim 4, Features: A lower hinge shaft (51) is provided at the lower end of the connecting rod (41), a cylinder (52) is provided at the upper end of the connecting rod (41), an upper hinge shaft (53) is rotatably connected inside the cylinder (52), a C-shaped clamping block (54) is provided on the inner side of the sliding block (5), the lower hinge shaft (51) is hingedly provided on the moving part (7), and the upper hinge shaft (53) is clamped into the C-shaped clamping block (54).

6. The hexagonal screw according to any one of claims 1 to 5, Features: An inner hexagonal groove (61) is provided at the end of the hexagonal nut (2).

7. The hexagonal screw according to claim 6, Features: A slotted groove (71) is also provided on the end surface of the hexagonal nut (2), and the slotted groove (71) is connected to the inner hexagonal groove (61).

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