Spring anti-loosening type flange nut

Abstract

The utility model discloses a spring anti-loose flange nut which comprises a nut body, a plurality of screwing faces are arranged on the outer wall of the nut body, a connecting thread area is arranged in the nut body in a penetrating mode, and a self-adaptive lubricating structure matched with the connecting thread area is arranged in the nut body. An upper positioning ring communicating with the connecting thread area is integrally connected to the top face of the nut body, an auxiliary positioning assembly is arranged in the upper positioning ring, and a lower spring anti-loosening assembly communicating with the connecting thread area is arranged on the bottom face of the nut body. The nut has the advantages that the lubricity of the connecting position of the nut and the bolt can be effectively improved, it is guaranteed that the nut cannot be disassembled due to rusting and corrosion, meanwhile, the good auxiliary positioning effect is achieved, and the problem of nut feeding caused by vibration can be greatly solved.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, in particular to a spring anti-loosening type flange nut. Background Art

[0002] Flange nuts, also known as washer nuts, toothed nuts, hexagonal flange nuts, flange nuts, etc., are mostly used in pipe connections or workpieces that need to increase the contact surface of the nut. The size and thread specifications of flange nuts are basically the same as those of general hexagonal nuts, but compared with hexagonal nuts, the gasket and nut are integrated, which increases the surface area contact between the nut and the workpiece. Compared with the combination of ordinary nuts and washers, flange nuts are more secure and have greater tensile strength.

[0003] Flange nuts are commonly used fasteners and are widely used. They have a certain anti-loosening effect. However, when flange nuts are installed on parts that vibrate, such as automobile chassis, they are still prone to loosening due to vibration. Once loosened, it will bring certain safety hazards.

[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model aims to provide a spring-proof flange nut.

[0006] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical scheme: a spring anti-loosening flange nut, including a nut body, the outer wall of the nut body is provided with several tightening surfaces, a connecting thread area is penetrated through the nut body, an adaptive lubrication structure matching the connecting thread area is provided in the nut body, an upper positioning ring connected to the connecting thread area is integrally connected to the top surface of the nut body, an auxiliary positioning component is provided in the upper positioning ring, and a lower spring anti-loosening component connected to the connecting thread area is provided on the bottom surface of the nut body.

[0007] Preferably, the adaptive lubrication structure includes a lubricating liquid storage chamber annularly arranged in the nut body, an arc-shaped guide surface is arranged in the lubricating liquid storage chamber, a plurality of inclined flow channels are arranged on the side of the lubricating liquid storage chamber away from the arc-shaped guide surface, and the outlet of the inclined flow channel is connected to the connecting threaded area.

[0008] Preferably, a liquid adding through hole is opened on the nut body, a sealing plug is threadedly connected to the liquid adding through hole, and a filter screen is arranged in the lubricating liquid storage cavity outside the inclined flow channel.

[0009] Preferably, the auxiliary positioning assembly includes a trapezoidal step opened on the upper positioning ring, an internal threaded ring matching the connecting threaded area is provided on the inner wall of the upper positioning ring below the trapezoidal step, a positioning bolt is movably provided on the upper positioning ring, one end of the positioning bolt located inside the upper positioning ring is connected to a clamping piece, and the end of the positioning bolt located outside the upper positioning ring is sleeved with a tightening threaded sleeve.

[0010] Preferably, the lower spring anti-loosening assembly includes an annular assembly groove provided on the bottom surface of the nut body, a lower resistance ring is installed in the annular assembly groove, and a rubber gasket is provided at the bottom of the lower resistance ring.

[0011] Preferably, a plurality of installation cavities are provided on the lower contact ring, a clamping spring is provided in the installation cavity, the top of the clamping spring is connected to the inner top of the installation cavity, sliding grooves are symmetrically provided in the annular assembly groove, and a sliding block slidably provided in the sliding groove is provided on the outer wall of the lower contact ring.

[0012] The utility model provides a spring-proof flange nut, which has the following beneficial effects:

[0013] By providing several tightening surfaces on the outer wall of the nut body, the tightening work of the nut body is facilitated. The connecting thread area is used to connect with the bolt. Through the adaptive lubrication structure, when the nut body is connected with the bolt, the lubricating liquid therein can flow into the connection, and as the nut body rotates, the lubricating liquid spreads on the thread of the bolt, thereby greatly preventing the connection between the bolt and the nut body from rusting or the nut body from being unable to be removed. The auxiliary positioning component provided in the upper positioning ring can play an auxiliary positioning role after the nut body is connected with the bolt, and cooperates with the lower spring anti-loosening component to ensure that the nut body will not loosen even if it is vibrated, thereby improving the tightening effect. The utility model can effectively increase the lubricity of the connection between the nut and the bolt, ensure that it will not rust and corrode and cannot be disassembled, and at the same time, has a good auxiliary positioning effect, which can greatly eliminate the problem of nut sending caused by vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 This is a front view of a spring-proof flange nut according to an embodiment of the utility model;

[0016] Figure 2 It is a cross-sectional view of an adaptive lubrication structure in a spring anti-loosening flange nut according to an embodiment of the utility model;

[0017] Figure 3 It is a structural schematic diagram of an auxiliary positioning component in a spring-proof flange nut according to an embodiment of the utility model;

[0018] Figure 4 The utility model is a schematic structural diagram of a lower spring anti-loosening assembly in a spring anti-loosening type flange nut according to an embodiment of the utility model.

[0019] Figure 5 It is an enlarged view of point A in a spring-proof flange nut according to an embodiment of the utility model.

[0020] In the figure:

[0021] 1. Nut body; 2. Tightening surface; 3. Connecting thread area; 4. Adaptive lubrication structure; 5. Upper positioning ring; 6. Annular assembly groove; 7. Auxiliary positioning component; 8. Lower spring anti-loosening component; 9. Lubricating liquid storage chamber; 10. Arc guide surface; 11. Inclined flow channel; 12. Filter screen; 13. Outlet; 14. Liquid filling hole; 15. Sealing plug; 16. Trapezoidal step; 17. Internal thread ring; 18. Snap-on piece; 19. Positioning bolt; 20. Tightening threaded sleeve; 21. Lower contact ring; 22. Rubber gasket; 23. Installation cavity; 24. Tightening spring; 25. Sliding block; 26. Sliding groove. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-5The utility model provides a spring anti-loosening flange nut, comprising a nut body 1, wherein the outer wall of the nut body 1 is provided with a plurality of tightening surfaces 2, and a connecting thread area 3 is provided through the nut body 1. By providing a plurality of tightening surfaces 2 on the outer wall of the nut body 1, the tightening work of the nut body 1 is facilitated, and the connecting thread area 3 is provided for connecting with a bolt, and an adaptive lubrication structure 4 matching with the connecting thread area 3 is provided in the nut body 1. Through the provided adaptive lubrication structure 4, when the nut body 1 is connected with the bolt, the lubricating fluid therein can flow into the connection, and as the nut body 1 rotates, the lubricating fluid is spread all over the connection. On the thread of the bolt, thereby greatly preventing the connection between the bolt and the nut body 1 from rusting or the nut body 1 from being unable to be removed. An upper positioning ring 5 connected to the top surface of the nut body 1 is integrally connected, and an auxiliary positioning component 7 is arranged in the upper positioning ring 5. A lower spring anti-loosening component 8 connected to the connecting threaded area 3 is arranged on the bottom surface of the nut body 1. The auxiliary positioning component 7 arranged in the upper positioning ring 5 can play an auxiliary positioning role when the nut body 1 is connected to the bolt, and together with the lower spring anti-loosening component 8, even if the nut body 1 is subjected to vibration, it can ensure that it will not loosen, thereby improving the tightening effect.

[0024] In one embodiment, please refer to the attached manual. Figure 2 As shown, the adaptive lubrication structure 4 includes a lubricating liquid storage chamber 9 annularly arranged in the nut body 1, an arc-shaped guide surface 10 is arranged in the lubricating liquid storage chamber 9, and a plurality of inclined flow channels 11 are arranged on the side of the lubricating liquid storage chamber 9 away from the arc-shaped guide surface 10, and the outlet 13 of the inclined flow channel 11 is connected to the connecting thread area 3, a liquid adding hole 14 is opened on the nut body 1, and a sealing plug 15 is threadedly connected to the liquid adding hole 14, and a filter screen 12 is arranged outside the inclined flow channel 11 in the lubricating liquid storage chamber 9. The lubricating liquid storage chamber 9 is provided to store the lubricating liquid, and the arc-shaped guide surface 10 ensures that the lubricating liquid therein flows from the inclined flow channel 11 to the outer channel, and finally flows into the connecting threaded area 3 through the outlet 13. When the bolt and the nut are tightened together, the lubricating liquid will spread throughout the connection between the bolt and the nut, which has the effect of lubrication and anti-corrosion. The provided liquid adding hole 14 is convenient for adding the lubricating liquid, the sealing plug 15 ensures the sealing of the liquid adding hole 14, and the filter screen 12 can prevent the fine debris in the lubricating liquid storage chamber 9 from entering the inclined flow channel 11 and causing blockage.

[0025] In one embodiment, please refer to the attached manual. Figure 3As shown, the auxiliary positioning assembly 7 includes a trapezoidal step 16 provided on the upper positioning ring 5, an internal threaded ring 17 matching the connecting threaded area 3 is provided on the inner wall of the upper positioning ring 5 below the trapezoidal step 16, and a positioning bolt 19 is movably provided on the upper positioning ring 5, and a clamping piece 18 is connected to one end of the positioning bolt 19 located inside the upper positioning ring 5, and a tightening threaded sleeve 20 is sleeved on one end of the positioning bolt 19 located outside the upper positioning ring 5. When in use, firstly, the bolt is passed through the connecting threaded area 3 in the nut body 1, and then the positioning bolt 19 is pushed forward so that the clamping piece 18 extends to the thread outside the bolt, and the position of the positioning bolt 19 is positioned by tightening the threaded sleeve 20, thereby achieving the function of auxiliary limiting.

[0026] In one embodiment, please refer to the attached manual. Figure 4-5 As shown, the lower spring anti-loosening component 8 includes an annular assembly groove 6 opened on the bottom surface of the nut body 1, a lower contact ring 21 is installed in the annular assembly groove 6, and a rubber gasket 22 is arranged at the bottom of the lower contact ring 21, a plurality of installation cavities 23 are opened on the lower contact ring 21, a clamping spring 24 is arranged in the installation cavity 23, the top of the clamping spring 24 is connected to the inner top of the installation cavity 23, sliding grooves 26 are symmetrically opened in the annular assembly groove 6, and a sliding block 25 slidably arranged in the sliding groove 26 is arranged on the outer wall of the lower contact ring 21. The annular assembly groove 6 is provided for mounting one end of the lower abutment ring 21 therein, and the sliding groove 26 and the sliding block 25 are used to prevent the lower abutment ring 21 from falling off while allowing it to move up and down. When the bottom surface of the nut body 1 contacts a fixed object, it will first contact the rubber gasket 22 at the bottom of the lower abutment ring 21, and push the lower abutment ring 21 into the annular assembly groove 6 when the nut body 1 descends. Through the reaction force of the tightening spring 24, the rubber gasket 22 can better contact the fixed object to avoid loosening due to vibration, thereby achieving an anti-loosening effect.

[0027] In actual application, several tightening surfaces 2 are provided on the outer wall of the nut body 1 to facilitate the tightening work of the nut body 1. The connecting threaded area 3 is provided for connecting with the bolt. Through the provided adaptive lubrication structure 4, when the nut body 1 is connected with the bolt, the lubricating liquid therein can flow into the connection, and as the nut body 1 rotates, the lubricating liquid spreads on the thread of the bolt, thereby greatly preventing the connection between the bolt and the nut body 1 from rusting or the nut body 1 from being unable to be removed. The auxiliary positioning component 7 provided in the upper positioning ring 5 can play an auxiliary positioning role when the nut body 1 is connected with the bolt, and cooperates with the lower spring anti-loosening component 8 to ensure that the nut body 1 will not loosen even if it is vibrated, thereby improving the tightening effect. The utility model can effectively increase the lubricity of the connection between the nut and the bolt, ensure that it will not rust and corrode and cannot be disassembled, and at the same time, has a good auxiliary positioning effect, which can greatly eliminate the problem of nut sending caused by vibration.

[0028] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A spring-proof flange nut, characterized in that: The invention comprises a nut body (1), the outer wall of which is provided with a plurality of tightening surfaces (2), a connecting threaded area (3) penetrating the nut body (1), an adaptive lubrication structure (4) cooperating with the connecting threaded area (3) being provided in the nut body (1), an upper positioning ring (5) connected to the connecting threaded area (3) being integrally connected to the top surface of the nut body (1), an auxiliary positioning component (7) being provided in the upper positioning ring (5), and a lower spring anti-loosening component (8) connected to the connecting threaded area (3) being provided on the bottom surface of the nut body (1).

2. A spring-proof flange nut according to claim 1, characterized in that: The adaptive lubrication structure (4) comprises a lubricating liquid storage chamber (9) annularly arranged in the nut body (1), an arc-shaped guide surface (10) being arranged in the lubricating liquid storage chamber (9), a plurality of inclined flow channels (11) being arranged on a side of the lubricating liquid storage chamber (9) away from the arc-shaped guide surface (10), and an outlet (13) of the inclined flow channel (11) being connected to the connecting threaded area (3).

3. The spring-proof flange nut according to claim 2, characterized in that: The nut body (1) is provided with a liquid adding hole (14), a sealing plug (15) is threadedly connected to the liquid adding hole (14), and a filter screen (12) is provided in the lubricating liquid storage chamber (9) outside the inclined flow channel (11).

4. The spring-proof flange nut according to claim 3, characterized in that: The auxiliary positioning component (7) comprises a trapezoidal step (16) provided on the upper positioning ring (5); an internal threaded ring (17) matching the connecting threaded area (3) is provided on the inner wall of the upper positioning ring (5) below the trapezoidal step (16); a positioning bolt (19) is movably provided on the upper positioning ring (5); one end of the positioning bolt (19) located inside the upper positioning ring (5) is connected to a clamping piece (18); and one end of the positioning bolt (19) located outside the upper positioning ring (5) is sleeved with a tightening threaded sleeve (20).

5. The spring-proof flange nut according to claim 4, characterized in that: The lower spring anti-loosening assembly (8) comprises an annular assembly groove (6) provided on the bottom surface of the nut body (1), a lower resistance ring (21) is installed in the annular assembly groove (6), and a rubber gasket (22) is provided at the bottom of the lower resistance ring (21).

6. The spring-proof flange nut according to claim 5, characterized in that: The lower abutment ring (21) is provided with a plurality of installation cavities (23), a clamping spring (24) is arranged in the installation cavity (23), the top of the clamping spring (24) is connected to the inner top of the installation cavity (23), sliding grooves (26) are symmetrically arranged in the annular assembly groove (6), and a sliding block (25) is arranged on the outer wall of the lower abutment ring (21) and is slidably arranged in the sliding groove (26).

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