Anti-loosening screw with good anti-vibration effect

Abstract

The utility model discloses an anti-loosening screw with a good anti-vibration effect, which comprises a screw rod and a gasket, threads are arranged on the outer side of the screw rod, and the gasket is movably hooked with the screw rod; the screw thread comprises a screw thread inner layer and a screw thread outer layer, the screw thread inner layer is fixedly connected with the screw rod, and the screw thread outer layer is fixedly connected with the screw thread inner layer. Due to the fact that the threads are arranged on the outer side of the screw rod, the gasket is movably connected with the screw rod in the hooking mode, specifically, the clamping groove is formed in the screw rod, the clamping block is fixedly connected in the gasket and matched with the clamping groove, the clamping block comprises the clamping block base and the clamping block head, the clamping block base is fixedly connected with the gasket, and the clamping block head is fixedly connected with the clamping block base. The clamping block head is fixedly connected with the clamping block seat, so that the gasket can be hung on the periphery of the screw rod in the using process of the anti-loosening screw, other gaskets do not need to be found, matched and sleeved in the using process, and therefore the using efficiency of the anti-loosening screw is improved.

Description

Technical Field

[0001] This utility model relates to the field of anti-loosening screw vibration technology, specifically an anti-loosening screw with good vibration resistance. Background Technology

[0002] Anti-loosening screws are fasteners made with special designs and materials, designed to effectively prevent screws from loosening under vibration or load. There are two main types:

[0003] One method uses thermal spraying technology to spray a special engineering plastic, primarily composed of nylon, onto the thread teeth. During tightening, this engineering plastic layer is compressed, generating a strong reaction force and friction, thus preventing the screw from retracting and achieving an anti-loosening effect.

[0004] Another type of anti-loosening screw is the pre-applied anti-loosening screw, which achieves anti-loosening by pre-applying anti-loosening screw adhesive. This adhesive is a high-viscosity, non-toxic, thixotropic, water-based pre-applied thread sealant, suitable for automatic application. After drying, it becomes a highly elastic and adhesive sealant that can be used to seal tapered or straight threads without curing.

[0005] Anti-loosening screws have several advantages, including:

[0006] 1. It has a strong anti-loosening function, which can provide a higher anti-loosening ability and prevent screws from loosening on their own under vibration and load conditions.

[0007] Second, it is fixed and stable, providing a more secure fixation effect and ensuring the stability and reliability of the connection.

[0008] Third, the ingenious design reduces friction and thread wear, thereby extending the screw's service life.

[0009] Anti-loosening screws are widely used in various fields, such as automobiles, motorcycles, aerospace, and machinery, playing an important role in scenarios where it is necessary to prevent screws from loosening.

[0010] Vibration has a significant impact on anti-loosening screws and is one of the main factors causing screw loosening. When a mechanical system is in operation, especially under reciprocating motion, rotational motion, or unbalanced forces, vibrations of different frequencies and amplitudes are generated. These vibrations cause minute relative movements between the screw connections, creating alternating frictional and shear forces on the thread flanks and the supporting surfaces of the nut and the connected parts. As the vibration continues, this dynamic force gradually overcomes the preload of the screw connection, leading to a decrease in the clamping force between the threaded parts, ultimately causing the nut to loosen and rotate. Therefore, achieving vibration resistance is particularly important for anti-loosening screws. Utility Model Content

[0011] The purpose of this invention is to provide a non-loosening screw with good vibration resistance to solve the problems mentioned in the background art.

[0012] To achieve the above objectives, this utility model provides the following technical solution: a non-loosening screw with good vibration resistance, comprising a screw rod and a washer, wherein the outer side of the screw rod is provided with threads, and the washer is movably hooked to the screw rod; the threads include an inner thread layer and an outer thread layer, wherein the inner thread layer is fixedly connected to the screw rod, and the outer thread layer is fixedly connected to the inner thread layer.

[0013] As a further improvement of this utility model: a non-loosening screw with good vibration resistance, wherein the screw has a groove inside and a locking block is fixedly connected inside the washer, and the locking block is adapted to the groove.

[0014] As a further embodiment of this utility model: a non-loosening screw with good vibration resistance, wherein the locking block includes a locking block seat and a locking block head, the locking block seat is fixedly connected to a washer, and the locking block head is fixedly connected to the locking block seat.

[0015] As a further improvement of this utility model: a non-loosening screw with good vibration resistance, wherein a screw shoulder is fixedly connected to one side of the screw rod, and one side of the washer is movably connected to the screw shoulder.

[0016] As a further embodiment of this utility model: a non-loosening screw with good vibration resistance, wherein the slots are arranged in a ring array around the screw axis and distributed on the outer periphery of the screw, and the blocks are arranged in a ring array around the washer axis and distributed on the outer periphery of the washer.

[0017] As a further improvement of this utility model: a non-loosening screw with good vibration resistance, wherein a screw head is fixedly connected to one side of the screw shoulder, and the screw head has a regular hexagonal structure.

[0018] As a further improvement of this utility model: a non-loosening screw with good vibration resistance, wherein the outer layer of the thread is made of high carbon steel.

[0019] As a further improvement of this utility model: a non-loosening screw with good vibration resistance, wherein a screw base is fixedly installed on one side of the thread.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] 1. Because the screw has threads on its outer side, the washer is movably hooked to the screw. Specifically, the screw has a groove inside, and the washer has a fixed block inside. The block is adapted to the groove, and the block includes a block seat and a block head. The block seat is fixedly connected to the washer, and the block head is fixedly connected to the block seat. Therefore, during the use of the anti-loosening screw, the washer can be hung on the outer circumference of the screw. There is no need to find, match, or use other washers, thereby improving the efficiency of the anti-loosening screw.

[0022] 2. Since the thread includes an inner thread layer and an outer thread layer, the inner thread layer is fixedly connected to the screw, and the outer thread layer is fixedly connected to the inner thread layer. The outer thread layer is made of high carbon steel. Therefore, after the inner thread layer is conventionally rubbed out with a die, the outer thread layer is then rubbed out with a die, which effectively increases the thread depth. This increases the contact area between the screw thread and the screw hole thread, effectively improving the screw's vibration resistance and anti-loosening effect. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an anti-loosening screw with good vibration resistance according to this utility model;

[0024] Figure 2 This is an assembly diagram of the screw and washer in an anti-loosening screw with good vibration resistance according to this utility model;

[0025] Figure 3 This is a schematic diagram of the thread structure in an anti-loosening screw with good vibration resistance according to this utility model;

[0026] Figure 4 This is a cross-sectional view of the thread in an anti-loosening screw with good vibration resistance according to this utility model;

[0027] Figure 5 This is a schematic diagram of the slot structure in an anti-loosening screw with good vibration resistance according to this utility model;

[0028] Figure 6 This utility model provides an anti-loosening screw with good vibration resistance. Figure 2 Enlarged view of point A in the middle;

[0029] In the diagram: 1. Screw; 2. Washer; 3. Screw shoulder; 4. Screw head; 5. Screw base; 6. Thread; 61. Inner thread layer; 62. Outer thread layer; 7. Slot; 8. Slot; 81. Slot seat; 82. Slot head. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The embodiments of this utility model will be described below based on its overall structure.

[0032] In this embodiment of the utility model, a non-loosening screw with good vibration resistance includes a screw rod 1 and a washer 2. The screw rod 1 is provided with a thread 6 on its outer side, and the washer 2 is movably hooked to the screw rod 1. The thread 6 includes an inner thread layer 61 and an outer thread layer 62. The inner thread layer 61 is fixedly connected to the screw rod 1, and the outer thread layer 62 is fixedly connected to the inner thread layer 61.

[0033] Because the screw 1 has a thread 6 on its outer side, the washer 2 is movably hooked to the screw 1. Specifically, the screw 1 has a groove 7 inside, and the washer 2 has a fixedly connected block 8 inside. The block 8 is adapted to the groove 7, and the block 8 includes a block seat 81 and a block head 82. The block seat 81 is fixedly connected to the washer 2, and the block head 82 is fixedly connected to the block seat 81. Therefore, during the use of the anti-loosening screw, the washer 2 can be hung on the outer periphery of the screw 1. When using it, there is no need to find, match, or use other washers, thereby improving the efficiency of the anti-loosening screw.

[0034] Since thread 6 includes an inner thread layer 61 and an outer thread layer 62, the inner thread layer 61 is fixedly connected to the screw 1, and the outer thread layer 62 is fixedly connected to the inner thread layer 61. The outer thread layer 62 is made of high carbon steel. Therefore, after the inner thread layer 61 is conventionally rubbed out using a die, the outer thread layer 62 is then rubbed out using a die, which effectively increases the thread depth, thereby increasing the contact surface between the screw thread and the screw hole thread, and effectively improving the screw's vibration resistance and anti-loosening effect.

[0035] As a further improvement of this utility model: a non-loosening screw with good vibration resistance, wherein the screw rod 1 has a groove 7 inside, and the washer 2 has a locking block 8 fixedly connected inside, and the locking block 8 is adapted to the groove 7.

[0036] As a further embodiment of this utility model: a non-loosening screw with good vibration resistance, wherein the locking block 8 includes a locking block seat 81 and a locking block head 82, the locking block seat 81 is fixedly connected to the washer 2, and the locking block head 82 is fixedly connected to the locking block seat 81.

[0037] As a further improvement of this utility model: a non-loosening screw with good vibration resistance, wherein a screw shoulder 3 is fixedly connected to one side of the screw rod 1, and one side of the washer 2 is movably connected to the screw shoulder 3.

[0038] As a further embodiment of this utility model: a non-loosening screw with good vibration resistance, wherein the slots 7 are arranged in a ring array around the axis of the screw 1 on the outer periphery of the screw 1, and the blocks 8 are arranged in a ring array around the axis of the washer 2 on the outer periphery of the washer 2.

[0039] As a further improvement of this utility model: a non-loosening screw with good vibration resistance, wherein a screw head 4 is fixedly connected to one side of the screw shoulder 3, and the screw head 4 has a regular hexagonal structure.

[0040] As a further improvement of this utility model: a non-loosening screw with good vibration resistance, wherein the outer thread layer 62 is made of high carbon steel.

[0041] As a further improvement of this utility model: a non-loosening screw with good vibration resistance, wherein a screw base 5 is fixedly installed on one side of the thread 6.

[0042] The working principle of this utility model is as follows: Since the screw 1 has a thread 6 on its outer side, the washer 2 is movably hooked to the screw 1. Specifically, the screw 1 has a groove 7 inside, and the washer 2 has a locking block 8 fixedly connected inside. The locking block 8 is adapted to the groove 7, and the locking block 8 includes a locking block seat 81 and a locking block head 82. The locking block seat 81 is fixedly connected to the washer 2, and the locking block head 82 is fixedly connected to the locking block seat 81. Therefore, during the use of the anti-loosening screw, the washer 2 can be hung on the outer periphery of the screw 1. When using it, there is no need to find, match, or use other washers, thereby improving the efficiency of the anti-loosening screw.

[0043] Since thread 6 includes an inner thread layer 61 and an outer thread layer 62, the inner thread layer 61 is fixedly connected to the screw 1, and the outer thread layer 62 is fixedly connected to the inner thread layer 61. The outer thread layer 62 is made of high carbon steel. Therefore, after the inner thread layer 61 is conventionally rubbed out using a die, the outer thread layer 62 is then rubbed out using a die, which effectively increases the thread depth, thereby increasing the contact surface between the screw thread and the screw hole thread, and effectively improving the screw's vibration resistance and anti-loosening effect.

[0044] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A type of anti-loosening screw with good vibration resistance, characterized in that, Including screw rod (1) and gasket (2), the outer side of the screw rod (1) is provided with thread (6), the gasket (2) is movably hooked with the screw rod (1); The thread (6) includes thread inner layer (61) and thread outer layer (62), the thread inner layer (61) is fixedly connected with the screw rod (1), and the thread outer layer (62) is fixedly connected with the thread inner layer (61).

2. The anti-loosening screw with good anti-vibration effect according to claim 1, characterized in that, The inside of the screw rod (1) is provided with clamping groove (7), and the inside of the gasket (2) is fixedly connected with clamping block (8), and the clamping block (8) is matched with the clamping groove (7).

3. The anti-vibration effect good lock screw according to claim 2, characterized in that, The clamping block (8) includes clamping block seat (81) and clamping block head (82), the clamping block seat (81) is fixedly connected with the gasket (2), and the clamping block head (82) is fixedly connected with the clamping block seat (81).

4. The anti-vibration effect good lock screw according to claim 3, characterized in that, One side of the screw rod (1) is fixedly connected with screw shoulder (3), and one side of the gasket (2) is movably connected with the screw shoulder (3).

5. The anti-vibration effect good lock screw according to claim 4, characterized in that, The clamping groove (7) is arranged in the form of ring array around the outer periphery of the screw rod (1) with the screw rod (1) axis as the center, and the clamping block (8) is arranged in the form of ring array around the outer periphery of the gasket (2) with the gasket (2) axis as the center.

6. The anti-vibration effect good lock screw according to claim 5, characterized in that, One side of the screw shoulder (3) is fixedly connected with screw head (4), and the screw head (4) is a regular hexagonal structure.

7. The anti-vibration effect good lock screw according to claim 6, characterized in that, The thread outer layer (62) is made of high carbon steel.

8. The anti-vibration effect good lock screw according to claim 7, characterized in that, One side of the thread (6) is fixedly installed with screw bottom (5).

Images