Fastener with self-sealing function

Abstract

The utility model relates to the technical field of fasteners, in particular to a fastener with a self-sealing function, which comprises a nut, a screw is welded at the bottom of the nut, a nut is sleeved on the surface of the bottom end of the screw in a threaded manner, a first sealing mechanism is mounted at the bottom of the nut, and a second sealing mechanism is mounted at the top of the nut. The screw rod penetrates through the mounting hole of the fixing piece, the nut is arranged on the surface of the screw rod in a threaded and sleeved mode, the screw rod and the nut are tightly connected through a wrench, the first sealing ring and the second sealing ring make contact with the surface of the fixing piece along with rotation, and the first sealing ring and the first sliding rod move into the first annular groove along with acting force; and a second sealing ring and a second sliding rod move into a second annular groove, a first spring and a second spring are continuously compressed, the first sealing ring and the second sealing ring make close contact with the surface of the fixing piece under the action of the first spring and the second spring, and the nut and the fixing piece are sealed.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, in particular to a fastener with a self-sealing function. Background Art

[0002] Fasteners are a type of mechanical parts used for fastening connections and are extremely widely used. Fasteners are used in a wide range of industries, including energy, electronics, electrical appliances, machinery, chemicals, metallurgy, molds, hydraulics, etc. Various fasteners can be seen on various machinery, equipment, vehicles, ships, railways, bridges, buildings, structures, tools, instruments, chemicals, meters and supplies.

[0003] After searching, the patent number is CN212615813U, and the name is a utility model of a fastener and connection structure with limiting and sealing functions, including bolts, limiting steps, sealing caps and flanges. Through research and analysis, it is found that although it has the advantages of limiting and sealing, it still has the following disadvantages to a certain extent.

[0004] For example, after the fastener is installed, the nut may become loose due to external vibration and other factors, which may cause the sealing cap to loosen, resulting in reduced sealing and reduced tightness of the fastener. The stability is poor and the practicality is not high. In order to solve the above technical problems, we have designed a fastener with self-sealing function. Utility Model Content

[0005] The purpose of the utility model is to provide a fastener with a self-sealing function, which has the advantages of self-sealing and anti-loosening, and solves the problem that when the fastener is installed, the nut is easily loosened due to external vibration and other factors, which in turn causes the sealing cap to loosen, resulting in reduced sealing and reduced fastening degree of the fastener.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fastener with a self-sealing function, comprising a nut, a screw rod welded to the bottom of the nut, a nut is provided on the surface thread sleeve of the bottom end of the screw rod, a sealing mechanism 1 is installed at the bottom of the nut, a sealing mechanism 2 is installed at the top of the nut, and an anti-slip mechanism is installed at the bottom of the nut.

[0007] Preferably, the sealing mechanism includes an annular groove, which is opened at the bottom of the nut, a ring plate is welded to the inner wall of the annular groove, a sliding rod is slidably penetrated through the bottom of the ring plate, a circular plate is welded to the top of the sliding rod, a spring is fixedly connected to the top of the circular plate, and a sealing ring is fixedly connected to the bottom end of the sliding rod.

[0008] Preferably, the second sealing mechanism includes a second ring groove, which is opened at the top of the nut, and a second ring plate is welded to the inner wall of the second ring groove, and a second slide rod is slidably penetrated through the top of the second ring plate, and a circular plate is fixedly connected to the bottom end of the second slide rod, a spring is fixedly connected to the bottom of the second circular plate, and a sealing ring is fixedly connected to the top end of the second slide rod.

[0009] Preferably, the anti-slip mechanism includes a circular ring, the top of the circular ring is welded to the bottom of the nut, the inner wall of the circular ring is slidably and rotatably connected with a connecting plate, there are two connecting plates, a cylinder is welded to the opposite ends of the two connecting plates, the bottom of the cylinder is threadedly inlaid with a screw, the top of the screw is welded with an extrusion block, a square rod is slidably penetrated on the surface of the cylinder, a wedge block is welded to the end of the square rod located in the inner cavity of the cylinder, a resist plate is welded to the end of the square rod away from the wedge block, and an anti-slip pad is welded to the side of the resist plate away from the square rod.

[0010] Preferably, guide holes matched with the connecting plate are provided on both sides of the screw rod, and the surface of the connecting plate is slidably connected to the inner wall of the guide hole.

[0011] Preferably, the nut and the screw rod are an integrated structure, and the screw is a hexagon socket screw.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] The utility model passes the screw through the installation hole of the fixing part, and the nut is threaded on the surface of the screw, and the screw and the nut are tightly connected by a wrench. As the rotation proceeds, the sealing ring one and the sealing ring two come into contact with the surface of the fixing part. As the force is applied, the sealing ring one and the sliding rod one move into the ring groove one, and the sealing ring two and the sliding rod two move into the ring groove two, so that the spring one and the spring two are continuously compressed. After the tightening is completed, the sealing ring one and the sealing ring two are tightly contacted with the surface of the fixing part under the action of the spring one and the spring two, and thus have the advantage of being able to self-seal, so that the nut and the nut are both sealed with the fixing part, and the dust and water proof effect is achieved.

[0014] The utility model moves the circular ring along with the movement of the nut. Since the connecting plate is slidably connected to the circular ring, it moves along with the circular ring, thereby driving the cylinder and the screw to move. After the tightening is completed, the wrench is inserted into the bottom of the screw and rotated to move the screw and the extrusion block, and the extrusion wedge block is moved, thereby moving the square rod and the abutment plate, so that the surface of the anti-skid pad is in close contact with the inner wall of the screw rod, thereby having the advantage of preventing the nut from falling off. After the fastener is installed, it is not easy for the nut to loosen due to external vibration and other factors, thereby improving the fastening degree of the fastener and having better stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 It is a partially cutaway stereoscopic schematic diagram of the utility model;

[0017] Figure 3 For this utility model Figure 2 A is an enlarged schematic diagram;

[0018] Figure 4 For this utility model Figure 2 A magnified schematic diagram of B;

[0019] Figure 5 This is a bottom-up stereoscopic diagram of the nut and screw of the utility model;

[0020] Figure 6 It is a three-dimensional schematic diagram of a ring plate and a spring of the utility model.

[0021] In the figure: 1. nut; 2. screw rod; 3. nut; 4. sealing mechanism one; 41. ring groove one; 42. ring plate one; 43. slide rod one; 44. round plate one; 45. spring one; 46. sealing ring one; 5. sealing mechanism two; 51. ring groove two; 52. ring plate two; 53. slide rod two; 54. round plate two; 55. spring two; 56. sealing ring two; 6. anti-slip mechanism; 61. ring; 62. connecting plate; 63. cylinder; 64. screw; 65. extrusion block; 66. square rod; 67. wedge block; 68. abutment plate; 69. anti-slip pad. DETAILED DESCRIPTION

[0022] See also Figure 1-Figure 6 A fastener with self-sealing function comprises a nut 1, a screw rod 2 is welded at the bottom of the nut 1, a nut 3 is provided on the surface thread sleeve of the bottom end of the screw rod 2, a sealing mechanism 1 4 is installed at the bottom of the nut 1, a sealing mechanism 2 5 is installed at the top of the nut 3, and an anti-slip mechanism 6 is installed at the bottom of the nut 3.

[0023] See also Figure 2 , Figure 3 and Figure 6The sealing mechanism 4 includes an annular groove 41, which is provided at the bottom of the nut 1. A ring plate 42 is welded to the inner wall of the annular groove 41. By setting the annular plate 42, a plurality of slide bars 43 are provided with installation positions. A slide bar 43 is provided through the bottom of the annular plate 42. By setting the slide bar 43, a sealing ring 46 is provided with a limit and guided to move. A circular plate 44 is welded to the top of the slide bar 43. A spring 45 is fixedly connected to the top of the circular plate 44. By setting the spring 45, the sealing ring 46 is in close contact with the surface of the fixed part under the action of the elastic force generated by the compression. The bottom end of the slide bar 43 is fixedly connected to the sealing ring 46. By setting the sealing ring 46, the fixed part and the nut 1 are sealed.

[0024] See also Figure 2 and Figure 4 The sealing mechanism 25 includes an annular groove 251, which is opened at the top of the nut 3. A ring plate 252 is welded to the inner wall of the annular groove 251. By setting the ring plate 252, a mounting position is provided for multiple slide bars 253. A slide bar 253 is slidably penetrated through the top of the ring plate 252. By setting the slide bar 253, a limit is provided for the sealing ring 256, so that it can be guided and moved. The bottom end of the slide bar 253 is fixedly connected to a circular plate 254, and the bottom of the circular plate 254 is fixedly connected to a spring 255. By setting the spring 255, the sealing ring 256 is in close contact with the surface of the fixed part under the action of the elastic force generated by the compression thereof. The top of the slide bar 253 is fixedly connected to a sealing ring 256. By setting the sealing ring 256, a seal is performed between the fixed part and the nut 3.

[0025] See also Figure 2 and Figure 5The anti-slip mechanism 6 includes a ring 61. The ring 61 is provided to support the connecting plate 62. At the same time, the connecting plate 62 will not hinder its rotation. The top of the ring 61 is welded to the bottom of the nut 3. The inner wall of the ring 61 is slidably and rotatably connected with the connecting plate 62. There are two connecting plates 62. A cylinder 63 is welded to the opposite end of the two connecting plates 62. The bottom of the cylinder 63 is threadedly inlaid with a screw 64. By providing the screw 64, the extrusion block 65 is rotated and moved when it rotates and moves. The top of the screw 64 is welded with an extrusion block 65. By providing the extrusion block 65, the wedge is pressed under the action of its movement. The wedge block 67 is squeezed and moved, and a square rod 66 is provided on the surface of the cylinder 63 to slide and penetrate. By providing the square rod 66, the wedge block 67 and the abutment plate 68 are limited and guided. A wedge block 67 is welded to one end of the square rod 66 located in the inner cavity of the cylinder 63, and an abutment plate 68 is welded to one end of the square rod 66 away from the wedge block 67. By providing the abutment plate 68, the square rod 66 and the wedge block 67 are moved, so that the anti-skid pad 69 on it contacts the inner wall of the screw rod 2. An anti-skid pad 69 is welded to the side of the abutment plate 68 away from the square rod 66. By providing the anti-skid pad 69, the friction between the abutment plate 68 and the inner wall of the screw rod 2 is increased.

[0026] See also Figure 4 and Figure 5 Guide holes matching the connecting plate 62 are provided on both sides of the screw rod 2. By setting the guide holes, the connecting plate 62 is limited and guided so that the connecting plate 62 does not rotate with the rotation of the ring 61, and the surface of the connecting plate 62 is slidably connected to the inner wall of the guide hole.

[0027] See also Figure 1 and Figure 5 The nut 1 and the screw rod 2 are an integrated structure, and the screw 64 is a hexagon socket screw.

[0028] When in use, the screw rod 2 is passed through the mounting hole of the fixing part, the nut 3 is threaded onto the surface of the screw rod 2, and the screw rod 2 and the nut 3 are tightly connected by a wrench. As the rotation proceeds, the sealing ring 1 46 and the sealing ring 2 56 contact the surface of the fixing part, and as the sealing ring 1 46 and the sliding rod 1 43 move into the annular groove 1 41, and the sealing ring 2 56 and the sliding rod 2 53 move into the annular groove 2 51, the spring 1 45 and the spring 2 55 are continuously compressed. After the tightening is completed, the sealing ring 1 46 and the sealing ring 2 55 are pressed against the sealing ring 1 6 is in close contact with the surface of the fixing part, so that the nut 1 and the nut 3 are sealed with the fixing part. As the nut 3 moves, the ring 61 moves. Since the connecting plate 62 is slidably connected with the ring 61, it will move with the ring 61, thereby driving the cylinder 63 and the screw 64 to move. After the tightening is completed, the wrench is inserted into the bottom of the screw 64 and rotated to move the screw 64 and the extrusion block 65, and the wedge block 67 is squeezed to move, thereby moving the square rod 66 and the abutment plate 68, so that the surface of the anti-skid pad 69 is in close contact with the inner wall of the screw 2, so that the nut 3 is prevented from falling off.

[0029] To sum up: the fastener with self-sealing function, through the cooperation of nut 1, screw 2, nut 3, sealing mechanism 1 4, sealing mechanism 2 5 and anti-slip mechanism 6, solves the problem that the nut is easily loosened due to external vibration and other factors after the fastener is installed, which in turn causes the sealing cap to loosen, resulting in reduced sealing and reduced tightness of the fastener.

Claims

1. A fastener with a self-sealing function, comprising a nut (1), a screw (2) welded to the bottom of the nut (1), a nut (3) threadedly sleeved on the surface of the bottom end of the screw (2), characterized in that: A sealing mechanism 1 (4) is installed at the bottom of the nut (1), a sealing mechanism 2 (5) is installed at the top of the nut (3), and an anti-slip mechanism (6) is installed at the bottom of the nut (3).

2. A fastener with self-sealing function according to claim 1, characterized in that: The sealing mechanism (4) comprises an annular groove (41), wherein the annular groove (41) is formed at the bottom of the nut (1), an annular plate (42) is welded to the inner wall of the annular groove (41), a sliding rod (43) is slidably penetrated through the bottom of the annular plate (42), a circular plate (44) is welded to the top of the sliding rod (43), a spring (45) is fixedly connected to the top of the circular plate (44), and a sealing ring (46) is fixedly connected to the bottom end of the sliding rod (43).

3. A fastener with self-sealing function according to claim 1, characterized in that: The second sealing mechanism (5) comprises a second annular groove (51), wherein the second annular groove (51) is provided at the top of the nut (3), a second annular plate (52) is welded to the inner wall of the second annular groove (51), a second sliding rod (53) is slidably penetrated through the top of the second annular plate (52), a second circular plate (54) is fixedly connected to the bottom end of the second sliding rod (53), a second spring (55) is fixedly connected to the bottom of the second circular plate (54), and a second sealing ring (56) is fixedly connected to the top end of the second sliding rod (53).

4. A fastener with self-sealing function according to claim 1, characterized in that: The anti-slip mechanism (6) comprises a circular ring (61), the top of the circular ring (61) is welded to the bottom of the nut (3), the inner wall of the circular ring (61) is slidably and rotatably connected to a connecting plate (62), the number of the connecting plates (62) is two, a cylinder (63) is welded to the opposite ends of the two connecting plates (62), the bottom of the cylinder (63) is threadedly inlaid with a screw (64), the top of the screw (64) is welded with an extrusion block (65), a square rod (66) is slidably penetrated on the surface of the cylinder (63), a wedge block (67) is welded to one end of the square rod (66) located in the inner cavity of the cylinder (63), a stop plate (68) is welded to one end of the square rod (66) away from the wedge block (67), and a non-slip pad (69) is welded to one side of the stop plate (68) away from the square rod (66).

5. A fastener with self-sealing function according to claim 4, characterized in that: Guide holes matching the connecting plate (62) are provided on both sides of the screw rod (2), and the surface of the connecting plate (62) is slidably connected to the inner wall of the guide hole.

6. A fastener with self-sealing function according to claim 4, characterized in that: The nut (1) and the screw rod (2) are an integrated structure, and the screw (64) is a hexagon socket screw.

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