Anti-loosening fixing suite

Abstract

According to the anti-loosening fixing kit, a plurality of notches are formed in a nut thread of a nut in the vertical direction, and a plurality of notches are formed in a screw thread of a screw in the vertical direction. Due to the existence of the notches of the nut threads and the screw threads, the nut threads are in discontinuous contact with the screw threads, the part, in contact with the nut threads, of the screw threads is subjected to compression deformation, the notches are not subjected to pressure and are not deformed, bulges are formed relative to the contact surfaces, and the bulges are embedded into the notches of the nut threads.

Description

Technical Field

[0001] The utility model belongs to the technical field of fixing parts, and in particular relates to an anti-loosening fixing kit. Background Art

[0002] At present, in China, in order to deal with the loosening of screws and nuts due to vibration during use, resin washers or metal barbed washers are generally added to the nuts to solve the problem. The principle is to increase the friction of the reverse movement of the loosened nut. This increased friction is evenly increased in the radial direction of the nut, so it can only have a certain anti-loosening effect, and it will still loosen due to long-term vibration. There are patented products abroad that produce a wedge-like effect when the upper and lower nuts interact with each other, and the loosening effect is very good, but the nuts are difficult to manufacture and the cost is high. The upper and lower nuts need to be matched during use, which is complicated and labor-intensive to operate. Summary of the invention

[0003] In order to overcome the above-mentioned deficiencies of the prior art, the purpose of the utility model is to provide an anti-loosening fixing kit, which has the characteristics of convenient manufacturing, low cost and easy use.

[0004] In order to achieve the above purpose, the technical solution adopted in this utility model is:

[0005] The invention discloses an anti-loosening fixing kit, comprising a screw rod and a nut, wherein the nut thread of the nut is provided with a plurality of notches along the vertical direction, and the screw thread of the screw rod is provided with a plurality of notches along the vertical direction.

[0006] The notch is triangular or rectangular.

[0007] The beneficial effects of the utility model are:

[0008] During the tightening process of the nut, due to the existence of the notch in the nut thread, the nut thread and the screw thread are in intermittent contact, and compression deformation occurs at the point where the screw thread contacts the nut thread, while the screw thread is not subjected to pressure at the notch and is not deformed, and a protrusion is formed relative to the contact surface, and the protrusion is embedded in the notch of the nut thread. Since the thread cuts 1 or N notches in the vertical direction, each circle of the thread will have one or N protrusions embedded in the notch. Compared with the standard nut and the screw thread, which are in smooth contact as a whole and slide as a whole due to vibration, causing the nut to loosen, the patented nut has multiple protrusions embedded in the notch, making it very difficult or even impossible to loosen due to vibration, thereby achieving a loosening effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a schematic diagram of the screw structure of the utility model.

[0010] Figure 2 It is a schematic cross-sectional view of the screw structure of the utility model.

[0011] Figure 3 This is a schematic diagram of the nut structure of the utility model.

[0012] Among them, 1 is a screw; 11 is a screw thread; 12 is a notch A; 2 is a nut; 21 is a nut thread; and 22 is a notch B. DETAILED DESCRIPTION

[0013] The utility model is further described below in conjunction with the accompanying drawings and working principles.

[0014] like Figure 1 , 2 As shown in , 3, an anti-loosening fixing kit comprises a screw rod (1) and a nut (2), wherein the screw thread (21) of the nut (2) is provided with a plurality of notches A (21) along the vertical direction, and the nut thread (11) of the screw rod (1) is provided with a plurality of notches B (12) along the vertical direction.

[0015] The notch A (21) and the notch B (12) are triangular or rectangular.

[0016] When the nut is manufactured, one or N notches are cut into the thread in the vertical direction. The notches can be triangular, rectangular or other shapes.

[0017] When the screw is manufactured, the thread is cut into one or N notches in the vertical direction. The notches can be triangular, rectangular or other shapes.

[0018] During the tightening process of the nut, due to the existence of the nut thread notch, the nut thread and the screw thread are in intermittent contact, and compression deformation occurs at the point where the screw thread contacts the nut thread, while the screw thread is not subjected to pressure and deformation at the notch, forming a protrusion relative to the contact surface, and the protrusion is embedded in the nut thread notch.

[0019] The nut is exactly the same as the existing standard nut when in use. The nut can not only be used in working environments where loosening may occur due to vibration, but can also be used in all fields where existing standard nuts are used. The cost is almost the same as that of existing standard nuts and the nut can be reused.

[0020] During the screw tightening process, due to the existence of the screw thread notch, the screw thread and the nut thread are in intermittent contact, and compression deformation occurs at the contact point between the nut thread and the screw thread, while the nut thread is not subjected to pressure at the notch and is not deformed, and a protrusion is formed relative to the contact surface, and the protrusion is embedded in the screw thread notch. Since the thread cuts 1 or N notches along the vertical direction, each circle of the thread will have one or N protrusions embedded in the notch. Compared with the standard nut and screw thread, which are in overall smooth contact and slide as a whole due to vibration, causing the nut or screw to loosen, the patented screw has multiple protrusions embedded in the notch, making it very difficult or even impossible to loosen due to vibration, thereby achieving a loosening effect.

[0021] Inlay effect:

[0022] During the screw tightening process, due to the existence of the screw thread notch, the nut thread and the screw thread are in intermittent contact, and compression deformation occurs at the point where the nut thread contacts the screw thread, while the nut thread is not subjected to pressure and deformation at the notch, forming a protrusion relative to the contact surface, and the protrusion is embedded in the screw thread notch.

[0023] Increase friction:

[0024] Changing the contact surface between traditional threads from a plane to a non-plane increases friction and increases the resistance to nut loosening.

[0025] The screw is exactly the same as the existing standard screw when in use. The screw can not only be used in working environments where looseness is caused by vibration, but can also be used in all fields where existing standard screws are used. The cost is almost the same as that of existing standard screws and it can be reused.

Claims

1. An anti-loosening fixing kit, comprising a screw (1) and a nut (2), characterized in that: The screw thread (21) of the nut (2) is provided with a plurality of notches A (21) along the vertical direction, and the nut thread (11) of the screw (1) is provided with a plurality of notches B (12) along the vertical direction.

2. The anti-loosening fixing kit according to claim 1, characterized in that: The notch A (21) and the notch B (12) are triangular or rectangular.

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