Adjustable expansion anchor bolt

Abstract

The utility model discloses an adjustable expansion anchor bolt which comprises a trapezoidal main sliding block and side sliding blocks installed on the two sides of the main sliding block in a sliding mode respectively, the sides, away from the main sliding block, of the side sliding blocks are arranged to be vertical faces, a screw rod is arranged in the center of the top of the main sliding block, and a hand-screwing nut is installed on the screw rod. The utility model has the beneficial effects that by arranging the trapezoidal main sliding block and the two side sliding blocks connected with the main sliding block in a sliding manner, a user can shorten the distance between the hand-screwing nut and the main sliding block by screwing the hand-screwing nut during use, and the main sliding block cannot rotate due to the limitation of the side sliding blocks, so that the use is convenient. In the process, due to the fact that the main sliding block is in a trapezoid shape, the two side sliding blocks can be pushed away in the opposite directions, the vertical faces of the outer sides of the two side sliding blocks tightly abut against the inner walls of the two sides of the blind hole, and stable anchoring is formed on the blind hole.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile accessories, in particular to an adjustable expansion anchor bolt. Background Art

[0002] UTV off-road vehicles are special vehicles suitable for beach off-road, mountain cargo or farm operations. They are generally equipped with a rear bucket, and multiple mounting holes are set on the edge of the rear bucket to provide an expansion basis for users to install other equipment later. However, in order to make the rear bucket look beautiful, UTV off-road vehicle manufacturers mostly set the above mounting holes as blind holes, such as Figure 1 The nearly diamond-shaped blind hole 100 shown (some models also use square blind holes) cannot be fixed using through-type fasteners such as bolts. Therefore, manufacturers generally recommend that users use rubber caps to install the equipment. The size of the rubber cap is slightly larger than the size of the blind hole 100. There is a brim on the head of the rubber cap. When in use, it is necessary to first align the mounting hole of the equipment with the blind hole 100 of the UTV rear bucket, and then press the rubber cap into the blind hole 100 until the brim rests on the outer edge of the mounting hole of the equipment. The interference fit between the rubber cap and the blind hole 100 and the limit of the brim are used to anchor the equipment.

[0003] However, the above-mentioned rubber cap is only fixed by the friction between itself and the blind hole 100, and its tightening force is insufficient, and it is easy to loosen, and the tightening purpose cannot be fully achieved. Utility Model Content

[0004] In view of the above problems, the utility model proposes an adjustable expansion anchor bolt, which mainly solves the problem of insufficient tightening force of the rubber plug.

[0005] In order to solve the above technical problems, the technical solution of the utility model is as follows:

[0006] An adjustable expansion anchor bolt comprises a main slider arranged in a trapezoidal shape, and side sliders respectively slidably mounted on both sides of the main slider, wherein the side of the side slider away from the main slider is arranged as a vertical surface, and a screw rod is arranged at the top center of the main slider, and a hand-tightened nut is installed on the screw rod.

[0007] In some embodiments, a limiting hole is further provided at the bottom center of the main slider, and a light hole is provided on the surface of the limiting hole vertically penetrating to the top of the main slider, and a limiting member for cooperating with the limiting hole is fixed to the bottom of the screw rod, and the screw rod is threadedly connected with the hand-tightening nut after passing through the light hole.

[0008] In some embodiments, the limiting hole is a polygonal step.

[0009] In some embodiments, the hand nut is a through hole hand nut.

[0010] In some embodiments, a gasket is installed on the screw rod, and the gasket is located between the hand nut and the main slider.

[0011] In some embodiments, a slide groove is provided on a side of the side slider close to the main slider, a convex strip matching the slide groove is provided on the side of the main slider, and a limiting portion for blocking the convex strip is provided at the top of the slide groove.

[0012] In some embodiments, an arc-shaped groove for avoiding the screw is provided on a side of the limiting portion close to the screw.

[0013] In some embodiments, a side of the side slider away from the main slider is provided with anti-slip grooves.

[0014] The beneficial effects of the utility model are as follows: by providing a trapezoidal main slider and two side sliders slidably connected to the main slider, when in use, the user can reduce the distance between the hand nut and the main slider by twisting the hand nut, and since the main slider cannot rotate due to the limitation of the side sliders, the main slider can only be forced to move upwards. In this process, since the main slider is a trapezoid, the two side sliders will be pushed away in opposite directions, so that the vertical surfaces of the outer sides of the two side sliders are tightly against the inner walls on both sides of the blind hole, forming a stable anchoring for the blind hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A blind hole is provided at the edge of the rear bucket of a UTV off-road vehicle;

[0016] Figure 2 This is a schematic diagram of the structure of an adjustable expansion anchor bolt disclosed in an embodiment of the utility model;

[0017] Figure 3 An exploded view of an adjustable expansion anchor bolt disclosed in an embodiment of the utility model;

[0018] Figure 4 This is a schematic diagram of the installation of the adjustable expansion anchor bolt disclosed in the embodiment of the utility model;

[0019] Among them: 100-blind hole, 1-main slider, 2-side slider, 3-screw, 4-hand nut, 5-limiting hole, 6-bright hole, 7-limiting piece, 8-gasket, 101-convex strip, 201-slide groove, 202-limiting part, 203-arc groove, 204-anti-slip pattern. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model clearer and more specific, the content of the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It is understood that the specific embodiments described herein are only used to explain the utility model, rather than to limit the utility model. It should also be noted that, for the convenience of description, only the parts related to the utility model are shown in the accompanying drawings, rather than all the contents.

[0021] This embodiment provides an adjustable expansion anchor bolt, such as Figure 2 As shown, it includes a main slider 1 set in a trapezoidal shape, and side sliders 2 respectively slidably installed on both sides of the main slider 1, the side of the side slider 2 away from the main slider 1 is set as a vertical surface, and a screw rod 3 is set at the top center of the main slider 1, and a hand-tightened nut 4 is installed on the screw rod 3.

[0022] In this embodiment, a trapezoidal main slider 1 and two side sliders 2 slidably connected to the main slider 1 are provided. When in use, the user can reduce the distance between the hand nut 4 and the main slider 1 by twisting the hand nut 4. Since the main slider 1 is limited by the side sliders 2 and cannot rotate, the main slider 1 can only be forced to move upward. In this process, since the main slider 1 is a trapezoid, the two side sliders 2 will be pushed away in opposite directions, so that the vertical surfaces of the outer sides of the two side sliders 2 are tightly against the inner walls of the two sides of the blind hole 100, forming a stable anchoring for the blind hole 100.

[0023] In the above embodiment, Figure 2 As shown, it can be seen that the main slider 1 is a trapezoid that is narrow at the top and wide at the bottom (it can be isosceles or unequal), so the side of the side slider 2 that contacts the main slider 1 should be set to be obliquely outward from top to bottom, so that when the main slider 1 moves up, the two side sliders 2 are pushed outward. However, the above example is only one of the solutions that can achieve the expected function. In another optional solution, the main slider 1 can be a trapezoid that is wide at the top and narrow at the bottom. Therefore, in this solution, the side of the side slider 2 that contacts the main slider 1 should be set to be obliquely inward from top to bottom. On the contrary, when the main slider 1 moves down, the two side sliders 2 are pushed outward.

[0024] Since the above solution requires a screw rod 3 to be fixed on the top of the main slider 1, considering the simplicity of manufacturing the accessory, this embodiment is Figure 2 Taking the structure shown in the figure as an example, another optimized structure is proposed, such as Figure 3As shown, a limiting hole 5 is further provided at the bottom center of the main slider 1, and a light hole 6 is provided on the surface of the limiting hole 5 and vertically penetrates to the top of the main slider 1. A limiting member 7 for cooperating with the limiting hole 5 is fixed at the bottom of the screw rod 3, and the screw rod 3 is threadedly connected with the hand nut 4 after passing through the light hole 6. In this scheme, the limiting hole is provided to limit the limiting member 7 fixedly installed at the bottom of the screw rod 3, thereby limiting the rotational movement of the screw rod 3, and the design of the light hole 6 is to ensure that the screw rod 3 passes smoothly from the bottom of the main slider 1 to the top of the main slider 1.

[0025] Specifically, the limiting hole 5 is a polygonal step. Obviously, the screw rod 3 and the limiting member 7 can be bolts, such as hexagonal bolts, and the heads of the hexagonal bolts are inserted into the limiting holes 5 accordingly, so as to limit the rotation of the screw rod 3.

[0026] In this embodiment, when the hand-tightening nut 4 is screwed into the screw rod 3, the end cover of the hand-tightening nut 4 will abut against the upper end of the main slider 1, or against the upper end of the side slider 2. The specific interference situation depends on the distance between the two side sliders 2. Since the hand-tightening nut 4 will be subject to longitudinal limitation during the screwing-in process, it is actually the screw rod 3 that drives the main slider 1 to move upward. Therefore, the hand-tightening nut 4 should be configured as a through-hole hand-tightening nut to provide a channel for the screw rod 3 to move upward.

[0027] The installation hole of some equipment is larger than the end cover of the hand nut 4, and the end cover of the hand nut 4 may not be able to press the installation hole of the equipment. In order to expand the application range of adjustable expansion anchor bolts, refer to Figure 2 and Figure 3 A gasket 8 is installed on the screw rod 3, and the gasket 8 is located between the hand nut 4 and the main slider 1. When in use, the gasket 8 should be against the upper end surface of the mounting hole of the equipment to serve as a barrier between the mounting hole and the end cover of the hand nut 4.

[0028] In this embodiment, the main slider 1 is connected by sliding. Figure 2 and Figure 3 In the example shown, a slide groove 201 is provided on the side of the side slider 2 close to the main slider 1, and a convex strip 101 matching the slide groove 201 is provided on the side of the main slider 1. In order to prevent the main slider 1 from falling out during the upward sliding process, a limiting portion 202 for blocking the convex strip 101 is provided at the top of the slide groove 201. That is to say, when the hand-tightening nut 4 is tightened, the convex strips 101 on both sides of the main slider 1 will abut against the lower end of the limiting portion 202.

[0029] On the basis of the above scheme, the upper limit position of the main slider 1 is controlled below the limit portion 202. When the main slider 1 is located at the lowermost end, the screw 3 may interfere with the limit portion 202. Furthermore, an arc-shaped groove 203 for avoiding the screw 3 is provided on the side of the limit portion 202 close to the screw 3.

[0030] like Figure 3 As shown, the side of the side slider 2 away from the main slider 1 is provided with an anti-skid pattern 204 to increase the friction between the side slider 2 and the inner wall of the blind hole 100 to prevent the installed adjustable expansion anchor from falling out of the blind hole 100.

[0031] The effect of the adjustable expansion anchor bolt after being installed into the blind hole 100 is as follows Figure 4 As shown (the installation hole of the equipment is not shown), the installation method of the adjustable expansion anchor is as follows: first, insert the screw rod 3 from the light hole 6 at the bottom of the main slider 1 until the limit piece 7 enters the limit hole 5, and then install the slide groove 201 part of the two side sliders 2 onto the convex strip 101 of the main slider 1 to form a sliding connection, and then put the installed part into the blind hole 100. At this time, the screw rod 3 is exposed outside the blind hole 100, and the installation hole of the equipment to be installed is aligned with the screw rod 3 and laid flat, and finally the hand-tightening nut 4 is screwed into the screw rod 3 until the hand-tightening nut 4 can no longer be turned, indicating that the two side sliders 2 have been anchored in the blind hole 100.

[0032] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable ordinary technicians in the field to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the essence of the content of the utility model should be included in the protection scope of the utility model.

Claims

1. An adjustable expansion anchor, characterized in that: It includes a main slider arranged in a trapezoidal shape, and side sliders respectively slidably mounted on both sides of the main slider, wherein the side of the side slider away from the main slider is arranged as a vertical surface, and a screw rod is arranged at the top center of the main slider, and a hand-tightened nut is installed on the screw rod.

2. The adjustable expansion anchor according to claim 1, characterized in that: A limiting hole is also provided at the bottom center of the main slider, and a light hole is provided on the surface of the limiting hole vertically penetrating to the top of the main slider. A limiting piece for cooperating with the limiting hole is fixed at the bottom of the screw rod, and the screw rod is threadedly connected with the hand-tightening nut after passing through the light hole.

3. The adjustable expansion anchor according to claim 2, characterized in that: The limiting hole is a polygonal step.

4. The adjustable expansion anchor according to claim 1, characterized in that: The hand-tightening nut is a through-hole hand-tightening nut.

5. The adjustable expansion anchor according to claim 1, characterized in that: A gasket is installed on the screw rod, and the gasket is located between the hand-tightening nut and the main slider.

6. The adjustable expansion anchor according to claim 1, characterized in that: A sliding groove is arranged on one side of the side sliding block close to the main sliding block, a convex strip matching the sliding groove is arranged on the side surface of the main sliding block, and a limiting portion for blocking the convex strip is arranged on the top of the sliding groove.

7. The adjustable expansion anchor according to claim 6, characterized in that: An arc-shaped groove for avoiding the screw is arranged on one side of the limiting portion close to the screw.

8. The adjustable expansion anchor according to claim 1, characterized in that: The side of the side slider away from the main slider is provided with anti-slip grooves.

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