Nut with fastening anti-loosening structure

Abstract

The utility model discloses a nut with a fastening anti-loosening structure, which comprises a lower nut, an upper nut is fixedly mounted at the top of the lower nut, and the nut is characterized in that the outer ring diameter of the upper nut is smaller than that of the lower nut, and the inner ring diameter of the upper nut is consistent with that of the lower nut; a first mounting groove is formed in the top of the lower nut, a first sealing ring used for sealing is inserted into a groove body of the first mounting groove, the first sealing ring and an inner ring of the lower nut are arranged in an attached state, and a second mounting groove is formed in the top of the upper nut. A second sealing ring used for sealing is installed in a groove body of the second installation groove, and the second sealing ring and the inner ring of the upper nut are arranged in an attached state. According to the nut with the fastening anti-loosening structure, friction force is formed between the nut and the bolt through the balls, the bearing capacity of connection is enhanced, meanwhile, the fastening force of the nut can be adjusted through stretching and retracting of the guide rod, and the optimal fastening state is kept.

Description

TECHNICAL FIELD

[0001] The utility model relates to nut technical field, concretely is a nut with fastening anti looseness structure. BACKGROUND

[0002] The nut is a common mechanical accessory, usually a hexagonal or other shape metal piece with internal thread, the nut is a part for connecting mechanical equipment tightly, used for cooperating with bolt or screw, through the internal thread, plays the role of connection and fixation.

[0003] The patent with the announcement of CN219299739U discloses an aluminum profile nut, belongs to fastening nut technical field, including nut body, the inside of nut body has internal thread, and the flange plate integrated with nut body is set up on the side away from nut body, the anti-loosening assembly is set up, when the nut body is tightened, the elastic rubber ring will tightly press the anti-slip ring on the workpiece, and the reaction force generated by the elastic rubber ring tightly pressing will tightly press the internal thread in the nut body on the external thread of the screw rod, so that the nut body can be locked and fixed and will not be loose, when the user needs to disassemble the nut, the locking rod can be disassembled, at this time, the two parts separated by the separation groove of the nut body will be expanded to a certain extent outward, so that the internal thread in the nut body and the external thread on the screw rod are loose, so as to facilitate the user to disassemble the nut body.

[0004] Combined with the existing scheme and actual use, the current nut still has some problems, such as: the fastening effect of the existing nut is weakened in long-term use when the nut is applied in a heavy load or high vibration environment, which leads to the loosening of the nut and the separation of the connecting parts, thereby affecting the stability and carrying capacity of the overall structure. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a nut with fastening anti-looseness structure to solve the problem that the existing nut is applied in a heavy load or high vibration environment, which leads to the loosening of the nut and the separation of the connecting parts, thereby affecting the stability and carrying capacity of the overall structure.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a nut with fastening anti-looseness structure, comprising:

[0007] The top of the lower nut is fixedly provided with an upper nut, characterized in that the outer diameter of the upper nut is smaller than that of the lower nut, the inner diameter of the upper nut is consistent with that of the lower nut, the top of the lower nut is provided with a first mounting groove, a first sealing ring for sealing is arranged in the groove, and the first sealing ring is arranged in a fitted state with the inner circle of the lower nut; the top of the upper nut is provided with a second mounting groove, a second sealing ring for sealing is arranged in the groove, and the second sealing ring is arranged in a fitted state with the inner circle of the upper nut; the lower nut is provided with a fastening assembly, and the inside of the upper nut is provided with a clamping assembly.

[0008] Preferably, the clamping assembly comprises a chamber, a first spring and a ball, the inside of the upper nut is provided with the chamber, the chamber is arranged in a ring array state about the center point of the upper nut, the inside of the chamber is provided with the first spring, and the inside of the chamber is provided with the ball which rolls, and the first spring and the ball are connected together.

[0009] Preferably, the diameter of the chamber cavity is consistent with the diameter of the ball, and the diameter of the chamber cavity is smaller than the diameter of the ball.

[0010] Preferably, the fastening assembly comprises a guide rod, a second spring, a rotating ring and a progressive top block, the inside of the lower nut is slidably connected with the guide rod, the guide rod is arranged in a ring array state about the center point of the lower nut, the outside of the guide rod is sleeved with the second spring, the outside of the lower nut is rotatably connected with the rotating ring, the side wall of the rotating ring is fixedly provided with the progressive top block, and the progressive top block is arranged in an array state about the ring body of the rotating ring.

[0011] Preferably, the rod body of the guide rod penetrates the lower nut, and the side wall of the rod body of the guide rod is arranged in an inclined state.

[0012] Preferably, the progressive top block is arranged in a state from small to large, the progressive top block is arranged in an inclined state, and the progressive top block is arranged in a corresponding state with the inclined side wall of the guide rod.

[0013] Compared with the prior art, the nut with the fastening anti-loose structure has the advantages that the ball forms a friction force between the nut and the bolt, enhances the bearing capacity of the connection, adjusts the fastening force through the extension and contraction of the guide rod, keeps the best fastening state, makes the connecting piece bear greater load without being easy to loosen, ensures the durability and stability of the connection, reduces the penetration of external liquid or gas into the nut through the thread of the nut inner circle, reduces corrosion and wear, and prolongs the service life.

[0014] 1. The utility model provides a nut and bolt connection structure, which is characterized by comprising a lower nut, an upper nut, a chamber, a first spring and a ball, the lower nut and the upper nut are fixedly connected together, the chamber is arranged in a ring array state about the center point of the upper nut, the first spring is arranged in the chamber, the ball in the chamber is connected with the first spring, the diameter of the chamber is consistent with the diameter of the ball, the diameter of the chamber is smaller than the diameter of the ball, when the lower nut and the upper nut are connected with the bolt, the elastic force of the first spring drives the ball to extend to the outside of the chamber, the ball is attached to the thread of the bolt, the ball and the thread of the bolt are engaged together, the ball can form a friction force between the nut and the bolt, the bearing capacity of the connection is enhanced, the nut and bolt connection structure can effectively prevent loosening under the conditions of vibration and impact, and the durability and stability of the connection are ensured.

[0015] 2. The utility model provides a nut and bolt connection structure, which is characterized by comprising a lower nut, a guide rod, a second spring, a rotating ring and a progressive top block, the rotating ring is rotatably connected to the outer side of the lower nut, when the lower nut is connected with the bolt, the rotating ring can be rotated, the side wall of the rotating ring is arranged in an array state and provided with the progressive top block, the progressive top block is arranged in a state from small to large, and the progressive top block is arranged in an inclined state, the guide rod penetrates through the lower nut, the rod body side wall of the guide rod is arranged in an inclined state, the rod body side wall of the guide rod is arranged in a corresponding state with the progressive top block, when the rotating ring is rotated, the progressive top block drives the guide rod to stretch and retract in the lower nut, the guide rod drives the second spring to stretch, the progressive top block and the guide rod are engaged together, the guide rod and the thread of the bolt are engaged together, and the guide rod is arranged in a ring array state about the center point of the lower nut, so that the bolt is fixed, the stretching and retracting of the guide rod can adjust the fastening force, so that the guide rod can maintain the best fastening state, the connecting piece can bear greater load without being prone to loosening, and the resistance to loosening is improved.

[0016] 3. The utility model provides a nut and bolt connection structure, which is characterized by comprising a lower nut, an upper nut, a first mounting groove, a first sealing ring, a second mounting groove and a second sealing ring, the first mounting groove is formed in the bottom of the lower nut, the first sealing ring is inserted into the first mounting groove, so that the first sealing ring is arranged at the cavity opening of the inner cavity of the lower nut, the second mounting groove is formed in the top of the upper nut, the second sealing ring is inserted into the second mounting groove, so that the second sealing ring is arranged at the cavity opening of the inner cavity of the upper nut, the first sealing ring and the second sealing ring can seal the lower nut and the upper nut, the sealing can reduce the penetration of external liquid or gas along the thread of the nut into the cavity opening of the inner ring, so as to reduce corrosion and wear, and prolong the service life. ACCURATE DRAWINGS

[0017] Figure 1 It is a front view structure schematic diagram of the utility model;

[0018] Figure 2 It is the whole structure schematic view of lower nut and upper nut of the utility model;

[0019] Figure 3 It is the overhead structure schematic view of the utility model;

[0020] Figure 4 It is the lower nut of the utility model's overhead structure schematic view;

[0021] Figure 5 It is the upper nut's overhead sectional structure schematic view of the utility model;

[0022] Figure 6 It is the lower nut's overhead sectional structure schematic view of the utility model.

[0023] In the drawing: 1, lower nut;2, upper nut;3, first installation slot;4, first sealing ring;5, second installation slot;6, second sealing ring;7, chamber;8, first spring;9, ball;10, guide rod;11, second spring;12, rotating ring;13, progressive top block. DETAILED DESCRIPTION

[0024] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0025] Please refer to Figures 1-6 The utility model provides a kind of technical scheme: a nut with fastening anti-loose structure, comprising: lower nut 1, upper nut 2, first installation slot 3, first sealing ring 4, second installation slot 5, second sealing ring 6, chamber 7, first spring 8, ball 9, guide rod 10, second spring 11, rotating ring 12, progressive top block 13.

[0026] Embodiment one;Please refer to attached Figure 1 , attached Figure 2 , attached Figure 5 and attached Figure 6As shown in the middle, since the lower nut 1 and the upper nut 2 are fixedly connected together, when connected with the bolt, the inner circle diameter of the lower nut 1 is consistent with the inner circle diameter of the upper nut 2, so as to set the lower nut 1 on the bolt, and rotate the lower nut 1, thereby making the lower nut 1 and the upper nut 2 rotate on the bolt, since the interior of the upper nut 2 is provided with the chamber 7, and the chamber 7 is arranged in an annular array state about the center point of the upper nut 2, then the first spring 8 is installed in the interior of the chamber 7, and the ball 9 is rollingly connected in the inner cavity of the chamber 7, thereby also being connected together with the first spring 8 and the ball 9, since the diameter of the chamber 7 cavity is consistent with the diameter of the ball 9, and the diameter of the chamber 7 cavity is smaller than the diameter of the ball 9, so that a small part of the ball 9 is placed outside the chamber 7 cavity through the elastic force of the first spring 8, when the upper nut 2 is connected with the bolt, thereby making the ball 9 rotate along the thread of the bolt, and driving the ball 9 and the bolt to be precisely fitted together through the elastic force of the first spring 8, thereby also making the ball 9 be placed between the threads of the bolt, when the connection with the bolt is completed, thereby making the ball 9 be able to form a friction force between the upper nut 2 and the bolt, thereby enhancing the overall load bearing capacity of the lower nut 1 and the upper nut 2;

[0027] When the nut is connected with the bolt, since the rotating ring 12 is rotatably connected to the outside of the lower nut 1, and is also arranged in an annular array state about the center point of the lower nut 1 through the guide rod 10, and the outer side of the rod body of the guide rod 10 is sleeved and connected with the second spring 11, when the rotating ring 12 is not rotated, since the guide rod 10 penetrates the lower nut 1, thereby making the guide rod 10 and the side wall of the rotating ring 12 be connected together through the elastic force of the second spring 11, when the rotating ring 12 is rotated, since the side wall of the rotating ring 12 is provided with the progressive top block 13, and the progressive top block 13 is arranged in an annular array state about the center point of the rotating ring 12, then the progressive top block 13 is arranged in a state from small to large through the progressive top block 13, and the progressive top block 13 is arranged in an inclined state, thereby also being arranged in an inclined state through the side wall of the rod body of the guide rod 10, and the inclination of the guide rod 10 is arranged in a corresponding state with the progressive top block 13, when the rotating ring 12 is rotated, thereby making the progressive top block 13 contact with the inclined side wall of the guide rod 10, and driving the guide rod 10 to stretch and contract through the rotation of the progressive top block 13, when the guide rod 10 stretches and contracts, the second spring 11 is also stretched and contracted synchronously, thereby making the guide rod 10 stretch and contract to the inner circle of the lower nut 1, and making the inclination of the guide rod 10 precisely fit together with the thread of the threaded rod, since the guide rod 10 is arranged in an annular array state about the center point of the lower nut 1, thereby making the guide rod 10 and the threaded rod precisely fit together through the rotation of the rotating ring 12, and also making the guide rod 10 and the threaded rod precisely fit together through the progressive top block 13 arranged from small to large, and driving the guide rod 10 to move closer to the bolt through the progressive top block 13, and precisely fitting together with the bolt, the stretching and contracting of the guide rod 10 can adjust the fastening force, so as to keep the fastening state between the lower nut 1, the upper nut 2 and the bolt, thereby making the lower nut 1, the upper nut 2 and the bolt be able to bear greater load capacity without being easy to loosen.

[0028] Embodiment two; please refer to the drawings Figure 1 , the drawings Figure 2 , the drawings Figure 3 and the drawings Figure 4 When the bolt connection between the lower nut 1 and the upper nut 2 is completed, the first installation groove 3 is arranged at the bottom of the lower nut 1, and the first sealing ring 4 is inserted into the groove body of the first installation groove 3, so that the first sealing ring 4 is attached to the inner ring opening of the lower nut 1, and the bottom of the lower nut 1 is sealed by the first sealing ring 4, and the second installation groove 5 is arranged at the top of the upper nut 2, and the second sealing ring 6 is inserted into the second installation groove 5, so that the second sealing ring 6 is attached to the inner ring opening of the upper nut 2, and the top of the lower nut 1 is sealed by the second sealing ring 6, and the inner ring opening of the lower nut 1 and the upper nut 2 is sealed by the first sealing ring 4 and the second installation groove 5, which can reduce the penetration of external liquid or gas along the thread from the ring opening of the nut inner ring, thereby reducing corrosion.

[0029] The contents not described in detail in the specification belong to the prior art known to those skilled in the art, the standard parts used in the utility model can be purchased from the market, the special-shaped parts can be ordered according to the description and the drawings, the specific connection mode of each part adopts the conventional means such as bolt, rivet and welding in the prior art, the mechanical parts and equipment adopt conventional types in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, which will not be described in detail here.

[0030] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A nut with a fastening anti-loose structure, comprising: a lower nut (1), the top of which is fixedly mounted with an upper nut (2), characterized in that the outer diameter of the upper nut (2) is smaller than that of the lower nut (1), and the inner diameter of the upper nut (2) is consistent with that of the lower nut (1), the top of the lower nut (1) is provided with a first mounting groove (3), a first sealing ring (4) for sealing is inserted in the groove body of the first mounting groove (3), and the first sealing ring (4) is arranged in a fitted state with the inner circle of the lower nut (1), the top of the upper nut (2) is provided with a second mounting groove (5), a second sealing ring (6) for sealing is mounted in the groove body of the second mounting groove (5), and the second sealing ring (6) is arranged in a fitted state with the inner circle of the upper nut (2), the lower nut (1) is provided with a fastening assembly, and the inside of the upper nut (2) is provided with a clamping assembly.

2. The nut with fastening anti-loosening structure according to claim 1, characterized in that: The clamping assembly comprises a chamber (7), a first spring (8) and a ball (9), the inside of the upper nut (2) is provided with a chamber (7), and the chamber (7) is arranged in a ring array state about the center point of the upper nut (2), the inside of the chamber (7) is mounted with a first spring (8), and the inside of the chamber (7) is rolled with a ball (9), and the first spring (8) and the ball (9) are connected together.

3. The nut with fastening anti-loosening structure according to claim 2, characterized in that: The diameter of the chamber (7) cavity is consistent with the diameter of the ball (9), and the diameter of the chamber (7) cavity is smaller than the diameter of the ball (9).

4. The nut with fastening anti-loosening structure according to claim 1, characterized in that: The fastening assembly comprises a guide rod (10), a second spring (11), a rotating ring (12) and a progressive top block (13), the inside of the lower nut (1) is slidably connected with a guide rod (10), and the guide rod (10) is arranged in a ring array state about the center point of the lower nut (1), and the outer side of the rod body of the guide rod (10) is connected with a second spring (11), the outer side of the lower nut (1) is rotatably connected with a rotating ring (12), and the side wall of the rotating ring (12) is fixedly mounted with a progressive top block (13), and the progressive top block (13) is arranged in an array state about the ring body of the rotating ring (12).

5. The nut with fastening anti-loosening structure according to claim 4, characterized in that: The rod body of the guide rod (10) penetrates the lower nut (1), and the side wall of the rod body of the guide rod (10) is arranged in an inclined state.

6. The nut with fastening anti-loosening structure according to claim 4, characterized in that: The progressive top block (13) is arranged in a small-to-large state, and the progressive top block (13) is arranged in an inclined state, and the progressive top block (13) is arranged in a corresponding state with the inclined side wall of the guide rod (10).

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