A structure for preventing the loosening of a blind nut

Abstract

The present invention discloses an anti-loosening structure for a plug nut, which relates to the technical field of fasteners and includes an anti-loosening component. When the connection between the plug screw and the metal nut becomes loose, a certain gap will be generated between the metal nut and the first sealing gasket. At this time, without the restraint of the pressure from the top and under the action of the elastic potential energy of several groups of compression springs, the second sealing gasket can unfold itself, jack up the first sealing gasket and keep it in a tightly fitting state with the fixed end cover. With the cooperation of the anti-slip pattern, it can prevent the secondary loosening between the existing plug screw and the metal nut to a certain extent. As can be seen from the above, the anti-loosening structure of the plug nut designed in this solution can effectively prevent the machine tool connecting piece from jamming materials due to the loosening of the connection between the plug screw and the metal nut, thereby avoiding the waste of products such as machine tool connecting pieces and fixed rods.

Description

Technical Field

[0001] The present invention relates to the technical field of fasteners, and particularly to an anti-loosening structure for a plug nut. Background Art

[0002] Bolts and nuts are the most commonly used fasteners, which are widely used in various fields. Bolts and nuts are connected by threads, and their self-locking ability comes from the cooperation of internal and external threads.

[0003] In relatively stable places, the cooperation between the plug screw and the fixed nut is relatively fixed and will not easily become loose. However, in some special usage environments, such as use in a vibration environment, use in a strong motion environment, equipment with high assembly requirements, and use in other special environments, the self-locking ability after the threaded connection between the plug screw and the fixed nut is not sufficient to maintain its own stability, resulting in loosening of the connection between the plug screw and the fixed nut. The loosening of the fastener will directly affect the normal operation of equipment such as machines, not only causing jamming of machine connection parts, but also wasting products such as machine connection parts and fixed rods.

[0004] Based on this, the present invention designs an anti-loosening structure for a plug nut to solve the above-mentioned problems. Summary of the Invention

[0005] The purpose of the present invention is to provide an anti-loosening structure for a plug nut to solve the above-mentioned problems.

[0006] To achieve the above purpose, the present invention provides the following technical solution: an anti-loosening structure for a plug nut, including an anti-loosening component, the anti-loosening component includes a machine connection part, and a fixed rod is installed on the outer side of the machine connection part;

[0007] The fixed rod includes a plug screw, one end of the plug screw is provided with a fixed end cover, a first sealing gasket is connected to the bottom of the fixed end cover, and a second sealing gasket is further arranged at the bottom of the first sealing gasket.

[0008] Based on the above technical features, in this solution, through the limit card slots respectively opened on both sides of the inner wall of the storage groove, and the limit card plates respectively installed on both sides of the outer sides of the two rubber shells, the second sealing gasket can be limited in the storage groove opened at the top of the fixed connection plate. When the metal rod body is connected and fixed to the top of the fixed connection plate through the connection screw head and the fixed screw hole, first, the metal ring body is sleeved on the bottom end of the metal rod body, and then the metal nut is connected and fixed to the bottom end of the metal rod body through the connection screw head and the connection screw hole. Since anti-slip patterns are engraved on both the front and back sides of the metal ring body, when the metal nut presses the metal ring body sleeved on the bottom end of the metal rod body, the anti-slip patterns can increase the frictional resistance of the contact between the metal ring body and the metal nut and the second sealing gasket, and the metal ring body can also press the second sealing gasket limited inside the storage groove;

[0009] When the socket head screw and the metal nut are used in a vibrating environment, a strong motion environment, equipment with high assembly requirements, and other special environments, when the self-locking ability is insufficient to maintain its own stability and the connection between the socket head screw and the metal nut becomes loose, a certain gap will be generated between the metal nut and the first sealing gasket. At this time, without the restraint of the top pressure and under the action of the elastic potential energy of several compression springs, the second sealing gasket can expand by itself, can lift the first sealing gasket and keep it in a tightly fitting state with the fixed end cover. With the cooperation of the anti-slip patterns, it can prevent the socket head screw and the metal nut from loosening again to a certain extent when used in a vibrating environment, a strong motion environment, equipment with high assembly requirements, and other special environments. At the same time, it can also prevent the loosening of the socket head screw and the metal nut from being aggravated due to the continuous increase of the gap between the fixed end cover and the first sealing gasket;

[0010] As can be seen from the above, the anti-loosening structure of the socket head nut designed in this solution can effectively prevent the machine tool connecting parts from jamming materials due to the loosening of the connection between the socket head screw and the metal nut, and avoid wasting products such as machine tool connecting parts and fixed rods.

[0011] Preferably, in the above anti-loosening structure of the socket head nut, the machine tool connecting part includes a metal connection disk, a connection flange is arranged on one side of the metal connection disk, and a fixed connection plate is also installed on one side of the top of the metal connection disk.

[0012] Based on the above technical features, in this solution, the connection flange installed on one side of the metal connection disk is used for connection and fixation during the production and processing of the machine tool connecting part.

[0013] Preferably, in the above anti-loosening structure of the socket head nut, the socket head screw includes a metal rod body, and a connection screw head is arranged at one end of the metal rod body.

[0014] Based on the above technical features, in this solution, by installing a connecting screw head at one end of the metal rod body, the metal rod body can be threadedly fixed to the top of the fixed connecting plate of the metal connecting disc.

[0015] Preferably, in the above anti-loosening structure of the blind head nut, the fixed end cover includes a metal nut, a connecting screw hole is penetrated through the middle of the metal nut, the connecting screw hole is matched with the connecting screw head structure, and the connecting screw hole and the connecting screw head are in threaded fit.

[0016] Based on the above technical features, since the connecting screw hole and the connecting screw head are in threaded fit, the metal nut can be threadedly fixed to one end of the metal rod body.

[0017] Preferably, in the above anti-loosening structure of the blind head nut, the first sealing gasket includes a metal ring body, and anti-slip patterns are engraved on both the front and back sides of the metal ring body.

[0018] Based on the above technical features, in this solution, by the anti-slip patterns engraved on both the front and back sides of the metal ring body, the frictional resistance of the contact between the metal ring body and the metal nut and the second sealing gasket can be increased, and to a certain extent, it can also prevent the blind head screw rod and the metal nut from loosening again during use in a vibrating environment, a strong motion environment, equipment with high assembly requirements, and other special environments.

[0019] Preferably, in the above anti-loosening structure of the blind head nut, a receiving groove is opened at the top of the fixed connecting plate, limiting card slots are opened on both sides of the inner wall of the receiving groove, a fixing screw hole is also opened at the bottom of the receiving groove, the fixing screw hole is matched with the connecting screw head structure, and the fixing screw hole and the connecting screw head are in threaded fit.

[0020] Based on the above technical features, since the fixing screw hole and the connecting screw head are in threaded fit, the metal rod body can be threadedly fixed to the top of the fixed connecting plate of the metal connecting disc.

[0021] Preferably, in the above anti-loosening structure of the blind head nut, the second sealing gasket includes a rubber housing, limiting card plates are respectively installed on both outer sides of the two rubber housings, the limiting card plates are matched with the limiting card slot structures, the limiting card plates and the limiting card slots are in clamping fit, and an adjusting cavity is also opened inside the two rubber housings.

[0022] Based on the above technical features, in this solution, through the second sealing gasket structure, the first sealing gasket can be pressed upward, so that the loose fixed end cover can always be kept in close contact with the first sealing gasket.

[0023] Preferably, in the above anti-loosening structure of the blind head nut, a rubber baffle is further connected between the two rubber shells. The rubber baffle is located between the two adjustment cavities, and a number of compression springs are arranged between the rubber baffle and the two adjustment cavities.

[0024] Based on the above technical features, in this solution, a number of compression springs installed between the rubber baffle and the two adjustment cavities can adjust the expansion and contraction and reset of the second gasket according to the usage situation.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] 1. In this solution, through the limit card slots respectively opened on both sides of the inner wall of the storage groove, and the limit cards respectively installed on both sides of the outer parts of the two rubber shells, the second gasket can be limited in the storage groove opened at the top of the fixed connection plate. When the metal rod body is connected and fixed to the top of the fixed connection plate through the connecting screw head and the fixed screw hole, first, the metal ring body is sleeved on the bottom end of the metal rod body, and then the metal nut is connected and fixed to the bottom end of the metal rod body through the connecting screw head and the connecting screw hole. Since anti-slip patterns are engraved on both the front and back sides of the metal ring body, when the metal nut presses the metal ring body sleeved on the bottom end of the metal rod body, the anti-slip patterns can increase the frictional resistance of the contact between the metal ring body and the metal nut and the second gasket, and the metal ring body can also press the second gasket limited inside the storage groove;

[0027] 2. When the blind head screw and the metal nut are used in a vibrating environment, a strong motion environment, equipment with high assembly requirements, and other special environments, when the self-locking ability is insufficient to maintain its own stability and the connection between the blind head screw and the metal nut becomes loose, a certain gap will be generated between the metal nut and the first gasket. At this time, without the restraint of the top pressure and under the action of the elastic potential energy of a number of compression springs, the second gasket can expand by itself, can lift the first gasket and keep it in a tightly fitting state with the fixed end cover. With the cooperation of the anti-slip patterns, it can prevent the blind head screw and the metal nut from loosening again to a certain extent when used in a vibrating environment, a strong motion environment, equipment with high assembly requirements, and other special environments. At the same time, it can also prevent the loosening between the blind head screw and the metal nut from being aggravated due to the continuous increase of the gap between the fixed end cover and the first gasket;

[0028] 3. As can be seen from the above, the anti-loosening structure of the blind head nut designed in this solution can effectively prevent the machine tool connecting parts from jamming due to the loosening of the connection between the blind head screw and the metal nut, and avoid wasting products such as machine tool connecting parts and fixed rods. Description of the Drawings

[0029] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0030] Figure 1 Schematic diagram of the overall structure of the present invention;

[0031] Figure 2 Schematic diagram of the metal connection plate structure of the present invention;

[0032] Figure 3 Schematic diagram of the disassembly of the fixing rod of the present invention;

[0033] Figure 4 For the present invention Figure 2 Schematic diagram of the enlarged structure at A in

[0034] Figure 5 Schematic diagram of the planar structure of the second gasket of the present invention.

[0035] In the drawings, the list of components represented by each reference numeral is as follows:

[0036] 1. Anti-loosening component; 2. Machine platform connecting piece; 3. Fixing rod; 4. Metal connection plate; 5. Connecting flange; 6. Fixing connecting plate; 7. Plug screw; 8. Fixed end cover; 9. First gasket; 10. Second gasket; 11. Metal rod body; 12. Connecting screw head; 13. Metal nut; 14. Connecting screw hole; 15. Metal ring body; 16. Anti-slip pattern; 17. Receiving groove; 18. Limit card slot; 19. Fixed screw hole; 20. Rubber housing; 21. Limit card plate; 22. Adjusting cavity; 23. Rubber baffle; 24. Compression spring. Detailed implementation manners

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0038] Please refer to Figures 1-3Among them, it includes an anti-loosening component 1. The anti-loosening component 1 includes a machine platform connecting piece 2. A fixing rod 3 is installed on the outer side of the machine platform connecting piece 2. The machine platform connecting piece 2 includes a metal connecting disc 4. A connecting flange 5 is arranged on one side of the metal connecting disc 4. A fixing connecting plate 6 is also installed on one side of the top of the metal connecting disc 4. The connecting flange 5 added on one side of the metal connecting disc 4 is used for connection and fixation during the production and processing of the machine platform connecting piece 2.

[0039] The fixing rod 3 includes a plugged screw 7. A fixing end cap 8 is installed at one end of the plugged screw 7. A first sealing gasket 9 is connected to the bottom of the fixing end cap 8. A second sealing gasket 10 is also arranged at the bottom of the first sealing gasket 9. The plugged screw 7 includes a metal rod body 11. A connecting screw head 12 is arranged at one end of the metal rod body 11. By adding the connecting screw head 12 at one end of the metal rod body 11, the metal rod body 11 can be threadedly fixed on the top of the fixing connecting plate 6 of the metal connecting disc 4.

[0040] The fixing end cap 8 includes a metal nut 13. A connecting screw hole 14 is penetrated through the middle of the metal nut 13. The connecting screw hole 14 is matched with the structure of the connecting screw head 12. The connecting screw hole 14 and the connecting screw head 12 are in threaded fit. Due to the threaded fit between the connecting screw hole 14 and the connecting screw head 12, the metal nut 13 can be threadedly fixed at one end of the metal rod body 11. The first sealing gasket 9 includes a metal ring body 15. Anti-slip patterns 16 are engraved on both the front and back sides of the metal ring body 15.

[0041] By engraving the anti-slip patterns 16 on both the front and back sides of the metal ring body 15 respectively, the frictional resistance of the contact between the metal ring body 15 and the metal nut 13 and the second sealing gasket 10 can be increased. It can also prevent the plugged screw 7 and the metal nut 13 from loosening again during use in a vibrating environment, a strong motion environment, equipment with high assembly requirements, and other special environments to a certain extent.

[0042] Please refer to the attached drawings in the specification Figure 4 and Figure 5 , a structure for preventing loosening of a plugged nut. A receiving groove 17 is opened at the top of the fixing connecting plate 6. Limiting card slots 18 are opened on both sides of the inner wall of the receiving groove 17. A fixing screw hole 19 is also opened at the bottom of the receiving groove 17. The fixing screw hole 19 is matched with the structure of the connecting screw head 12. The fixing screw hole 19 and the connecting screw head 12 are in threaded fit. Due to the threaded fit between the fixing screw hole 19 and the connecting screw head 12, the metal rod body 11 can be threadedly fixed on the top of the fixing connecting plate 6 of the metal connecting disc 4.

[0043] The second gasket 10 includes a rubber housing 20. On both outer sides of the two groups of rubber housings 20, limit clamping plates 21 are respectively installed. The limit clamping plates 21 are matched with the limit clamping grooves 18 in structure, and the limit clamping plates 21 and the limit clamping grooves 18 are in clamping fit. An adjustment cavity 22 is also opened inside the two groups of rubber housings 20. Through the structure of the second gasket 10, the first gasket 9 can be pressed upward, so that the loose fixed end cover 8 can always be kept in close contact with the first gasket 9.

[0044] A rubber baffle 23 is also connected between the two groups of rubber housings 20. The rubber baffle 23 is located between the two adjustment cavities 22. A number of compression springs 24 are also arranged between the rubber baffle 23 and the two adjustment cavities 22. By adding a number of compression springs 24 between the rubber baffle 23 and the two adjustment cavities 22, the second gasket 10 can be telescopically adjusted and reset according to the usage situation.

[0045] Working principle: In this solution, through the limit clamping grooves 18 respectively opened on both inner walls of the storage groove 17 and the limit clamping plates 21 respectively added on both outer sides of the two groups of rubber housings 20, the second gasket 10 can be limited in the storage groove 17 opened at the top of the fixed connecting plate 6. When the metal rod 11 is fixedly connected to the top of the fixed connecting plate 6 through the connecting screw head 12 and the fixing screw hole 19, first, the metal ring 15 is sleeved on the bottom end of the metal rod 11, and then the metal nut 13 is fixedly connected to the bottom end of the metal rod 11 through the connecting screw head 12 and the connecting screw hole 14. Since anti-slip patterns 16 are engraved on both the front and back sides of the metal ring 15, when the metal nut 13 presses the metal ring 15 sleeved on the bottom end of the metal rod 11, the anti-slip patterns 16 can increase the frictional resistance of the contact between the metal ring 15 and the metal nut 13 and the second gasket 10, and the metal ring 15 can also press the second gasket 10 limited inside the storage groove 17.

[0046] When the blind head screw 7 and the metal nut 13 are used in a vibrating environment, a strong motion environment, equipment with high assembly requirements, and other special environments, when the self-locking ability is insufficient to maintain its own stability and the connection between the blind head screw 7 and the metal nut 13 becomes loose, a certain gap will be generated between the metal nut 13 and the first gasket 9. At this time, without the restraint of the top pressure and under the action of the elastic potential energy of several groups of compression springs 24, the second gasket 10 can expand by itself, can lift the first gasket 9 and keep it in a tightly fitting state with the fixed end cover 8. With the cooperation of the anti-slip pattern 16, it can, to a certain extent, prevent the blind head screw 7 and the metal nut 13 from loosening again when used in a vibrating environment, a strong motion environment, equipment with high assembly requirements, and other special environments. At the same time, it can also prevent the loosening between the blind head screw 7 and the metal nut 13 from being aggravated due to the continuous increase in the gap between the fixed end cover 8 and the first gasket 9.

[0047] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0048] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A structure for preventing the loosening of a blind nut, comprising a loosening prevention component (1), characterized in that: The anti-loosening component (1) includes a machine base connecting piece (2), and a fixing rod piece (3) is installed on the outer side of the machine base connecting piece (2); The fixing rod piece (3) includes a plugged screw (7), a fixing end cover (8) is installed at one end of the plugged screw (7), a first sealing gasket (9) is connected to the bottom of the fixing end cover (8), and a second sealing gasket (10) is further arranged at the bottom of the first sealing gasket (9); The machine base connecting piece (2) includes a metal connecting disc (4), a connecting flange (5) is arranged on one side of the metal connecting disc (4), and a fixing connecting plate (6) is further installed on one side of the top of the metal connecting disc (4); The plugged screw (7) includes a metal rod body (11), and a connecting screw head (12) is arranged at one end of the metal rod body (11); A receiving groove (17) is formed in the top of the fixing connecting plate (6), limiting card slots (18) are formed in both sides of the inner wall of the receiving groove (17), a fixing screw hole (19) is further formed in the bottom of the receiving groove (17), the fixing screw hole (19) is matched with the connecting screw head (12) in structure, and the fixing screw hole (19) and the connecting screw head (12) are in threaded fit; The second sealing gasket (10) includes a rubber housing (20), limiting card plates (21) are respectively installed on both outer sides of the two rubber housings (20), the limiting card plates (21) are matched with the limiting card slots (18) in structure, the limiting card plates (21) and the limiting card slots (18) are in clamping fit, and an adjusting cavity (22) is formed in the two rubber housings (20); A rubber baffle (23) is further connected between the two rubber housings (20), the rubber baffle (23) is located between the two adjusting cavities (22), and a plurality of compression springs (24) are arranged between the rubber baffle (23) and the two adjusting cavities (22).

2. The anti-loosening structure of a blind nut according to claim 1, wherein: The fixing end cover (8) includes a metal nut (13), a connecting screw hole (14) is formed through the middle of the metal nut (13), the connecting screw hole (14) is matched with the connecting screw head (12) in structure, and the connecting screw hole (14) and the connecting screw head (12) are in threaded fit.

3. The anti-loosening structure of a plug nut according to claim 2, characterized in that: The first sealing gasket (9) includes a metal ring body (15), and anti-slip patterns (16) are engraved on both the front and back surfaces of the metal ring body (15).

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