Anti-loose self-locking screw

Abstract

The utility model discloses an anti-loose self-locking screw which comprises a screw rod provided with threads, one end of the screw rod is provided with a screw head, a plurality of side holes extending in the radial direction are distributed in the periphery of the side face of the screw head, one end of each side hole is connected with the outside, and the other end of each side hole extends to the outer wall face of the screw rod. An opening is formed in the side, facing the screw rod, of the side hole, an elastic piece extending in the circumferential direction of the screw head is arranged in the side hole, one end of the elastic piece is connected to the hole wall of the side hole, and a protruding part extending out of the opening is arranged on the side, facing the screw rod, of the elastic piece; the protruding part is far away from the joint of the elastic piece and the hole wall of the side hole. The screw has the advantages of being capable of preventing looseness, self-locking and firm in locking, complete in overall function and high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, and more specifically, to an anti-loosening self-locking screw. Background Art

[0002] After the traditional screw is screwed together with the connecting piece, the two are rigidly connected and will become loose under the influence of external force, and the anti-loosening effect cannot be achieved, and the locking effect is poor. Accordingly, the utility model proposes an anti-loosening self-locking screw. Utility Model Content

[0003] The utility model aims to overcome the deficiencies in the prior art and to provide an anti-loosening self-locking screw, which has the characteristics of anti-loosening self-locking and reliable locking.

[0004] In order to solve the above technical problems, the purpose of the utility model is achieved as follows: the utility model involves an anti-loosening self-locking screw, including a screw rod with a thread, one end of the screw rod has a screw head, and the side of the screw head is surrounded by a plurality of side holes extending in the radial direction, one end of the side hole is connected to the outside world, and the other end extends to the outer wall surface of the screw rod, the side of the side hole facing the screw rod is provided with an opening, the side hole is provided with a spring sheet extending along the circumference of the screw head, one end of the spring sheet is connected to the hole wall of the side hole, and the side of the spring sheet facing the screw rod is provided with a protrusion extending out of the opening.

[0005] The utility model is further configured as follows: the protrusion is away from the connection between the spring piece and the wall of the side hole.

[0006] The utility model is further configured as follows: the protrusion is in a straight strip shape, and the protrusion extends along the radial direction of the screw head.

[0007] The utility model is further configured as follows: the protrusion is provided with a rounded corner.

[0008] The utility model is further configured such that: the interval angles between two adjacent side holes are equal.

[0009] In summary, the utility model has the following beneficial effects: the anti-loosening self-locking screw involved in the utility model, when the end face of the screw head is in close contact with the connecting piece, the protrusion is compressed and the spring sheet is deformed, so that the screw head exerts a reaction force on the connecting piece to prevent the screw from loosening due to external force vibration, thereby playing an anti-loosening effect, locking is also firm, the overall function is perfect, and the practicability is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0011] Figure 2 It is a partial structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0012] In order to enable those skilled in the art to better understand the technical solution of the utility model, the preferred implementation scheme of the utility model is described below in conjunction with specific embodiments, but it should be understood that these descriptions are only for further illustrating the features and advantages of the utility model, rather than limiting the patent requirements of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the utility model.

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

[0014] Example 1

[0015] See also Figure 1 and Figure 2 As shown, the present embodiment involves an anti-loosening self-locking screw, comprising a screw rod 1 provided with a thread, one end of the screw rod 1 having a screw head 2, a side surface of the screw head 2 being provided with a plurality of side holes 3 extending in the radial direction, one end of the side hole 3 being connected to the outside, and the other end extending to the outer wall surface of the screw rod 1, an opening 4 being provided on the side of the side hole 3 facing the screw rod, a spring piece 5 extending in the circumferential direction of the screw head 2 being provided in the side hole 3, one end of the spring piece 5 being connected to the hole wall of the side hole 3, and a protrusion 6 extending out of the opening being provided on the side of the spring piece 5 facing the screw rod.

[0016] Furthermore, the protrusion 6 is in a straight strip shape, and the protrusion 6 extends along the radial direction of the screw head 2 .

[0017] Furthermore, the protrusion 6 is provided with rounded corners.

[0018] Furthermore, the interval angles between two adjacent side holes 3 are equal.

[0019] In this embodiment, as the screw is continuously screwed into the connecting piece, the protrusion 6 on the screw head 2 gradually approaches the end face of the connecting piece until the protrusion 6 touches the end face of the connecting piece, and the screw continues to rotate until the protrusion 6 is pressed in to be flush with the end face of the screw head 2. At this time, the spring piece 5 is deformed, giving the protrusion 6 a reaction force that presses on the connecting piece to achieve an anti-loosening and self-locking effect between the screw and the connecting piece.

[0020] Example 2

[0021] See also Figure 1 and Figure 2 As shown, the anti-loosening self-locking screw involved in this embodiment is further configured on the basis of Embodiment 1, wherein the protrusion 6 is away from the connection between the spring piece 5 and the wall of the side hole 3 .

[0022] In this embodiment, by arranging the protrusion 6 at a position far away from the connection between the spring sheet 5 and the wall of the side hole 3, the spring sheet 5 is more obviously deformed when the protrusion 6 is compressed.

[0023] The anti-loosening self-locking screw involved in the utility model has a function of preventing the screw from loosening and locking firmly, and the overall function is perfect and the prism is strong.

[0024] Unless otherwise specified, in the present invention, the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicating orientation or positional relationship are based on the orientation or positional relationship actually shown, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the orientation or positional relationship in the present invention are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood in combination with the embodiments and according to specific circumstances.

[0025] Unless otherwise clearly specified and limited, in the present invention, the terms "disposed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. An anti-loosening self-locking screw, comprising a screw rod provided with a thread, one end of the screw rod having a screw head, characterized in that: A plurality of side holes extending in the radial direction are arranged around the side of the screw head, one end of the side hole is connected to the outside world and the other end extends to the outer wall of the screw rod, an opening is arranged on the side of the side hole facing the screw rod, a spring sheet extending in the circumferential direction of the screw head is arranged in the side hole, one end of the spring sheet is connected to the hole wall of the side hole, and a protrusion extending out of the opening is arranged on the side of the spring sheet facing the screw rod.

2. The anti-loosening self-locking screw according to claim 1, characterized in that: The protrusion is far away from the connection between the spring piece and the wall of the side hole.

3. The anti-loosening self-locking screw according to claim 1 or 2, characterized in that: The protrusion is in the shape of a straight strip and extends along the radial direction of the screw head.

4. The anti-loosening self-locking screw according to claim 3, characterized in that: The raised portion is provided with a rounded corner.

5. The anti-loosening self-locking screw according to claim 1, characterized in that: The interval angles between two adjacent side holes are equal.

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