An adjustable fastener

Abstract

The utility model relates to fastener technical field especially relates to an adjustable fastener. The adjustable fastener includes fixed plate, and the fixed plate is welded with fixed connection sleeve joint ring, and the sleeve joint ring is installed with annular air bag, the fixed plate is opened with gas storage cavity, and the gas storage cavity is installed with piston plate, and the gas in the gas storage cavity is arranged to the annular air bag through the piston plate and drives the annular air bag inflation and fastens the pipe fitting or the rod piece that passes through the sleeve joint ring. The adjustable fastener provided by the utility model effectively realizes the fixation of pipe fitting or rod piece, and the capacity of gas in the gas storage cavity can be adjusted into the annular air bag through the threaded rod, so the clamping tension of the annular air bag to pipe fitting or rod piece can be effectively adjusted, and since the annular air bag after inflation is the elastic structure, the hidden danger that pipe fitting or rod piece is connected or sealed with the sleeve joint ring and is invalid due to the vibration of pipe fitting or rod piece is reduced in the structure form.

Description

Technical Field

[0001] This utility model relates to the field of fastener technology, and in particular to an adjustable fastener. Background Technology

[0002] In the field of fastener technology, traditional adjustable fasteners mostly use mechanical threads or hydraulic / pneumatic structures to achieve clamping functions. For example, while threaded fasteners have a simple structure, their adjustment accuracy is low and they are prone to loosening due to vibration; while hydraulic or pneumatic fasteners provide stable clamping force, their systems are complex, bulky, and have high maintenance costs. Furthermore, in existing technologies, pipe clamps are typically used to secure pipes or rods of various sizes, but under conditions requiring frequent adjustments or high vibration, traditional pipe clamp fasteners are prone to loosening.

[0003] Therefore, it is necessary to provide a new adjustable fastener to solve the above-mentioned technical problems. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides an adjustable fastener.

[0005] The adjustable fastener provided by this utility model includes a fixing plate, on which a fixedly connected sleeve ring is welded, and an annular airbag is installed inside the sleeve ring.

[0006] The fixed plate has an air storage cavity, and the cavity wall near the bottom of the air storage cavity is equipped with an air guide tube for connecting the air storage cavity and the annular airbag.

[0007] A piston plate is installed inside the gas storage chamber. The gas in the gas storage chamber is discharged to the annular air bladder through the piston plate, which drives the annular air bladder to expand and tighten the pipe or rod that passes through the sleeve ring.

[0008] Preferably, the inner ring wall of the sleeve ring is provided with an annular groove, and the outer wall of the annular airbag is fixedly connected to the inner groove of the annular groove.

[0009] Preferably, the piston plate is slidably installed in the gas storage chamber, and the upper wall of the piston plate is equipped with a rotatably connected threaded rod, which passes through a threaded hole in the fixed plate and is threadedly connected to the threaded hole.

[0010] Preferably, a knob is fixedly installed on the upper end of the threaded rod.

[0011] Preferably, guide rods are fixedly installed on the piston plates on both sides of the threaded rod, and both guide rods pass through the guide holes opened at the top of the fixed plate and are slidably connected to the guide holes.

[0012] Preferably, mounting holes are provided at all four corners of the fixing plate.

[0013] Compared with related technologies, the adjustable fastener provided by this utility model has the following advantages:

[0014] This invention drives the piston plate to discharge the gas in the gas storage chamber into the annular air bladder. As a result, the annular air bladder expands rapidly and fills the gap between the sleeve ring and the pipe or rod, effectively fixing the pipe or rod. The amount of gas entering the annular air bladder from the gas storage chamber can be adjusted by the threaded rod, thus effectively adjusting the clamping tension of the annular air bladder on the pipe or rod. Since the annular air bladder is an elastic structure after inflation, the structural design reduces the risk of connection failure or sealing failure between the pipe or rod and the sleeve ring due to vibration of the pipe or rod. Attached Figure Description

[0015] Figure 1 A schematic diagram of a preferred embodiment of the adjustable fastener provided by this utility model;

[0016] Figure 2 for Figure 1 A cross-sectional view of the fixing plate and the sleeve ring shown.

[0017] Figure 3 for Figure 2 The diagram shows a cross-sectional view of the collar.

[0018] Figure 4 for Figure 2 The diagram shows the connection structure between the piston plate and the threaded rod.

[0019] The following are the labels in the diagram: 1. Fixing plate; 1a. Air storage chamber; 1b. Threaded hole; 1c. Guide hole; 1d. Mounting hole; 2. Sleeve ring; 2a. Annular groove; 3. Annular airbag; 31. Air guide tube; 4. Piston plate; 5. Threaded rod; 51. Knob; 6. Guide rod. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0021] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0022] Please see Figures 1 to 4 The present invention provides an adjustable fastener, which includes a fixing plate 1, a sleeve ring 2, an annular air bladder 3, and a piston plate 4.

[0023] In the embodiments of this utility model, please refer to Figures 1 to 4The four corners of the fixing plate 1 are provided with mounting holes 1d. The fixing plate 1 is fixed by screws passing through the mounting holes 1d. The fixing plate 1 is welded with a fixed connecting sleeve ring 2. The sleeve ring 2 is installed with an annular airbag 3. Specifically, the inner ring wall of the sleeve ring 2 is provided with an annular groove 2a. The outer wall of the annular airbag 3 is fixedly connected to the inner groove of the annular groove 2a. The fixing plate 1 is provided with an air storage chamber 1a. The cavity wall of the air storage chamber 1a near the bottom is provided with an air guide pipe 31 for connecting the air storage chamber 1a and the annular airbag 3. The air storage chamber 1a is provided with a piston plate 4. The gas in the air storage chamber 1a is discharged to the annular airbag 3 through the piston plate 4, which drives the annular airbag 3 to expand and tighten the pipe or rod passing through the sleeve ring 2.

[0024] The piston plate 4 is slidably installed in the air storage chamber 1a, and the upper wall of the piston plate 4 is equipped with a rotatably connected threaded rod 5. The threaded rod 5 passes through the threaded hole 1b opened in the fixed plate 1 and is threadedly connected to the threaded hole 1b.

[0025] It should be noted that: the pipe or rod to be installed is passed through the annular air bladder 3 inside the sleeve ring 2, and then the threaded rod 5 is rotated to drive the threaded rod 5 downward along the threaded hole 1b. Therefore, the piston plate 4 is driven to discharge the gas in the gas storage chamber 1a into the annular air bladder 3. As a result, the annular air bladder 3 expands rapidly and fills the gap between the sleeve ring 2 and the pipe or rod, effectively fixing the pipe or rod. The amount of gas entering the annular air bladder 3 from the gas storage chamber 1a can be adjusted by the threaded rod 5, so the clamping tension of the annular air bladder 3 on the pipe or rod can be effectively adjusted.

[0026] Since the annular airbag 3 is an elastic structure after inflation, the structural form reduces the potential for connection failure or sealing failure between the pipe or rod and the sleeve ring 2 due to vibration of the pipe or rod.

[0027] Furthermore, a knob 51 is fixedly installed on the upper head of the threaded rod 5, which facilitates the operator to rotate the threaded rod 5.

[0028] Furthermore, guide rods 6 are fixedly installed on the piston plates 4 on both sides of the threaded rod 5, and both guide rods 6 pass through the guide holes 1c opened at the top of the fixed plate 1 and are slidably connected to the guide holes 1c, thereby improving the stability of the piston plate 4 when it slides up and down in the gas storage chamber 1a.

[0029] It is worth noting that in order to avoid the problem of wear or aging of the annular airbag 3 due to long-term use, the annular airbag 3 of this application is made of a highly elastic and wear-resistant material (such as fluororubber), and a wear-resistant coating is added to the inner wall of the annular groove 2a (the specific wear-resistant coating shall be selected by those skilled in the art according to the requirements).

[0030] In order to prevent gas leakage from the gas duct 31 or the gas storage chamber 1a, a sealing ring is installed at the connection of the gas duct 31, and the air tightness is checked periodically by pressurizing the knob 51.

[0031] The working principle of the adjustable fastener provided by this utility model is as follows: The pipe or rod to be installed is passed through the annular air bladder 3 inside the sleeve ring 2. Then, the threaded rod 5 is rotated to drive the threaded rod 5 downward along the threaded hole 1b, thus driving the piston plate 4 to discharge the gas in the air storage chamber 1a into the annular air bladder 3. Therefore, the annular air bladder 3 expands rapidly and fills the gap between the sleeve ring 2 and the pipe or rod, effectively fixing the pipe or rod. The volume of gas entering the annular air bladder 3 from the air storage chamber 1a can be adjusted by the threaded rod 5, thus effectively adjusting the clamping tension of the annular air bladder 3 on the pipe or rod. Since the annular air bladder 3 after inflation is an elastic structure, the structural form reduces the risk of connection failure or sealing failure between the pipe or rod and the sleeve ring 2 due to vibration of the pipe or rod.

[0032] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An adjustable fastener, characterized in that, Includes a fixing plate (1), on which a fixed connection sleeve (2) is welded, and an annular airbag (3) is installed inside the sleeve (2); The fixed plate (1) has an air storage chamber (1a) inside, and the air storage chamber (1a) is equipped with an air guide tube (31) for connecting the air storage chamber (1a) and the annular airbag (3) near the bottom of the chamber wall. A piston plate (4) is installed inside the gas storage chamber (1a). The gas in the gas storage chamber (1a) is discharged to the annular air bag (3) through the piston plate (4), which drives the annular air bag (3) to expand and tighten the pipe or rod that passes through the sleeve ring (2).

2. The adjustable fastener according to claim 1, characterized in that, The inner ring wall of the sleeve ring (2) is provided with an annular groove (2a), and the outer wall of the annular airbag (3) is fixedly connected to the inner groove of the annular groove (2a).

3. The adjustable fastener according to claim 1, characterized in that, The piston plate (4) is slidably installed in the gas storage chamber (1a), and the upper plate wall of the piston plate (4) is equipped with a rotatably connected threaded rod (5). The threaded rod (5) passes through the threaded hole (1b) opened in the fixed plate (1) and is threadedly connected to the threaded hole (1b).

4. The adjustable fastener according to claim 3, characterized in that, A knob (51) is fixedly installed on the upper rod head of the threaded rod (5).

5. The adjustable fastener according to claim 4, characterized in that, Guide rods (6) are fixedly installed on the piston plates (4) on both sides of the threaded rod (5), and both guide rods (6) pass through the guide holes (1c) opened at the top of the fixed plate (1) and are slidably connected with the guide holes (1c).

6. The adjustable fastener according to claim 1, characterized in that, Mounting holes (1d) are provided at all four corners of the fixing plate (1).

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