Fastener capable of preventing looseness

Abstract

The utility model discloses an anti-loosing fastener which comprises a first screwing end, a locking anti-skid gasket, a threaded column, a fixing nut and an auxiliary locking piece, the locking anti-skid gasket is fixedly connected to the bottom end of the first screwing end, the threaded column is fixedly connected to the middle of the bottom end of the locking anti-skid gasket, and the fixing nut is fixedly connected to the middle of the bottom end of the locking anti-skid gasket. The fixing nut is arranged on the threaded column in a threaded mode, the auxiliary locking piece is arranged at the bottom end of the threaded column, a conical extrusion groove and a threaded screwing groove are formed in the bottom end of the threaded column, and the threaded screwing groove is located below the conical extrusion groove. In the using process of the fastening piece, the auxiliary locking piece plays a role in assisting in locking, squeezing and stable adjustment, so that the fastening piece can be stable after being used for a long time, two parts can be firmly fastened even if the fastening piece is used in a vibrating environment, and the loosening phenomenon is not prone to occurring in the using process.

Description

TECHNICAL FIELD

[0001] The utility model relates to fastener technical field, concretely is a fastener of preventing loosening. BACKGROUND

[0002] Fastener is a kind of mechanical parts for fastening connection and is widely used, is the general term of mechanical parts when fastening two or more parts (or component) into a whole, mainly used to connect and fasten various parts, ensure the reliability, safety and durability of connecting parts, the bolt fastener of existing use is prone to loosening in the process of using, especially when using in vibrating environment, easy to loosen and fall off, therefore a fastener of preventing loosening is needed to solve the problems proposed above. SUMMARY

[0003] The utility model discloses a fastener of preventing loosening to solve the problems proposed in the above background technical.

[0004] To achieve the above object, the utility model provides the following technical scheme: a fastener of preventing loosening, including first screwing end, lock dead anti -skid gasket, threaded column, fixed nut and auxiliary lock dead piece, the lock dead anti -skid gasket fixed connection in the bottom of first screwing end, the threaded column fixed connection in the bottom middle part of lock dead anti -skid gasket, the fixed nut is set on the threaded column, the auxiliary lock dead piece is set in the bottom of threaded column, the bottom of threaded column is provided with taper extrusion groove and thread screw groove, and the threaded screw groove is located below the taper extrusion groove, and the bottom of threaded column is evenly provided with deformation groove.

[0005] Preferably, the bottom surface of the lock dead anti-skid gasket is uniformly fixed with a lug plate.

[0006] Preferably, the auxiliary lock dead piece includes a second screwing end, a threaded fixing column, and an extrusion ball. The threaded fixing column is fixedly connected to the middle part of the upper end of the second screwing end. The extrusion ball is fixedly connected to the upper end of the threaded fixing column.

[0007] Preferably, the upper end of the second screwing end is uniformly fixed with an extrusion control spring on the outside. The upper end of the extrusion control spring is fixedly connected with an extrusion limiting plate.

[0008] Preferably, the threaded fixing column is threaded into the interior of the threaded screw groove. The extrusion ball is extruded and inserted into the interior of the taper extrusion groove.

[0009] Preferably, the extrusion limiting plate is in extrusion contact with the bottom surface of the fixed nut.

[0010] Compared with the prior art, the utility model has the advantages that:

[0011] The auxiliary locking part provided in the utility model plays the role of auxiliary locking and extrusion stable adjustment, so that the fastener can be stably used for a long time, and even when used in a vibrating environment, the two parts can be firmly fastened, and the utility model is not prone to loosening. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a schematic diagram of the main body structure of the utility model;

[0013] Figure 2 It is a schematic diagram of the main body structure of the utility model;

[0014] Figure 3 It is a schematic diagram of the internal structure of the threaded column of the utility model;

[0015] Figure 4 It is a schematic diagram of the auxiliary locking part structure of the utility model.

[0016] In the drawing: 1 - first screwing end, 2 - locking anti-skid washer, 3 - threaded column, 4 - fixed nut, 5 - auxiliary locking part, 6 - convex plate, 7 - conical extrusion groove, 8 - threaded screwing groove, 9 - deformation groove, 10 - second screwing end, 11 - extrusion control spring, 12 - threaded fixed column, 13 - extrusion ball, 14 - extrusion limiting plate. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than 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.

[0018] As shown in the drawing, Figures 1-4 An embodiment provided by the utility model: a fastener preventing loosening, comprising a first screwing end 1, a locking anti-skid washer 2, a threaded column 3, a fixed nut 4 and an auxiliary locking part 5, the locking anti-skid washer 2 is fixedly connected to the bottom end of the first screwing end 1, the threaded column 3 is fixedly connected to the middle part of the bottom end of the locking anti-skid washer 2, the fixed nut 4 is threadedly arranged on the threaded column 3, the auxiliary locking part 5 is arranged at the bottom end of the threaded column 3, the bottom end of the threaded column 3 is provided with a conical extrusion groove 7 and a threaded screwing groove 8, the threaded screwing groove 8 is located below the conical extrusion groove 7, and the bottom of the threaded column 3 is uniformly provided with a deformation groove 9.

[0019] The bottom end surface of the locking anti-skid washer 2 is uniformly fixedly installed with a convex plate 6, which plays the role of anti-skid stability.

[0020] The auxiliary locking piece 5 comprises a second screwing end head 10, a threaded fixing column 12 and an extrusion ball 13, the threaded fixing column 12 is fixedly connected in the middle of the upper end of the second screwing end head 10, and the extrusion ball 13 is fixedly connected to the upper end of the threaded fixing column 12.

[0021] The extrusion control spring 11 is uniformly fixedly installed on the outer side of the upper end of the second screwing end head 10, and the upper end of the extrusion control spring 11 is fixedly connected with an extrusion limiting plate 14, which plays a role of buffering extrusion and preventing loosening.

[0022] The threaded fixing column 12 is screwed into the inside of the threaded screwing groove 8, and the extrusion ball 13 is extruded and inserted into the inside of the conical extrusion groove 7, which plays a role of extrusion support.

[0023] The extrusion limiting plate 14 is extruded and contacted with the bottom end surface of the fixed nut 4, which plays a role of extrusion support and blocking.

[0024] Working principle: after the threaded column 3 penetrates through two workpieces, the fixed nut 4 is located at the bottom of the workpiece, and the fixed nut 4 is screwed onto the threaded column 3, at this time, the two workpieces can be fixedly connected, and the locking anti-skid washer 2 provided at the bottom end of the first screwing end head 1 and the convex plates 6 uniformly distributed on the bottom end of the locking anti-skid washer 2 play a role of auxiliary extrusion and increase friction to prevent displacement and loosening, when the anti-loosening grade of the fastener is high, after the parts are fixed by the fastener, the second screwing end head 10 is twisted by a tool to make the threaded fixing column 12 inserted into the inside of the threaded screwing groove 8, and the extrusion ball 13 is inserted into the inside of the conical extrusion groove 7, the bottom of the threaded column 3 is supported and opened outward by the deformation groove 9, and at this time, the outward opening part of the threaded column 3 is located at the bottom end of the fixed nut 4, the fixed nut 4 is fully blocked and limited and cannot be displaced, at this time, the extrusion control spring 11 is extruded to make the extrusion limiting plate 14 extruded to the bottom end of the fixed nut 4, so that the fixed nut 4 is not easy to be displaced and loosened in the process of use, even if the fixed part is fixed in a vibrating environment, the function of component locking is achieved, so that the fixed part can be stably used for a long time and is not easy to be loosened.

[0025] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A loose-tightening prevention fastener comprising a first screwing tip (1), a locking anti-slip washer (2), a threaded column (3), a fixing nut (4) and an auxiliary locking member (5), characterized in that: The deadlocking anti-skid washer (2) is fixedly connected at the bottom end of the first screwing end head (1), the threaded column (3) is fixedly connected at the middle of the bottom end of the deadlocking anti-skid washer (2), the fixed nut (4) is threadedly arranged on the threaded column (3), the auxiliary deadlocking piece (5) is arranged at the bottom end of the threaded column (3), the bottom end of the threaded column (3) is provided with a tapered extrusion groove (7) and a threaded screwing groove (8), the threaded screwing groove (8) is located below the tapered extrusion groove (7), and the bottom of the threaded column (3) is uniformly provided with a deformation groove (9).

2. A loose preventing fastener according to claim 1, wherein: The bottom end surface of the deadlocking anti-skid washer (2) is uniformly fixedly provided with a lug (6).

3. A loose preventing fastener according to claim 2, wherein: The auxiliary deadlocking piece (5) comprises a second screwing end head (10), a threaded fixed column (12) and an extrusion ball (13), the threaded fixed column (12) is fixedly connected at the middle of the upper end of the second screwing end head (10), and the extrusion ball (13) is fixedly connected at the upper end of the threaded fixed column (12).

4. A loose preventing fastener according to claim 3, wherein: The upper end outer side of the second screwing end head (10) is uniformly fixedly provided with an extrusion control spring (11), and the upper end of the extrusion control spring (11) is fixedly connected with an extrusion limiting plate (14).

5. A loose preventing fastener according to claim 4, wherein: The threaded fixed column (12) is threadedly inserted into the inside of the threaded screwing groove (8), and the extrusion ball (13) is extrusion-inserted into the inside of the tapered extrusion groove (7).

6. A loose preventing fastener according to claim 5, wherein: The extrusion limiting plate (14) is extrusion-contacted with the bottom end surface of the fixed nut (4).

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