TWM598352U - Anti-loosening and leakage preventing screw fixing member - Google Patents

Abstract

An anti-loose and leak-proof screw member includes: a screw body with a locking head, a connecting neck, a first coupling part, and a threaded part. The locking head is located at one end of the screw body. The connecting neck is formed by protruding from the bottom surface of the locking head toward the other end of the screw body, the first coupling portion is located between the connecting neck and the threaded portion, and the outer surface of the threaded portion is formed with a first An external thread; and a tight coupling member having a covering portion and a second coupling portion, the tight coupling member is tubularly sheathed with the connecting neck and the first coupling portion, and the covering portion covers the connecting neck On the outer surface, the second coupling portion is installed and connected to the outer surface of the first coupling portion, and the outer surface of the second coupling portion is formed with a second external thread that is continuous with the first external thread.

Description

Anti-loose and leak-proof screw-fixed components

This creation is related to a kind of threaded fasteners, especially to a kind of anti-loosening and leak-proof screwing components.

In order to prevent the screw from loosening from the screw hole in the prior art, a serrated washer is formed on the mounting surface between the screw head and the outer surface of the screw hole to increase the gap between the screw head and the outer surface of the screw hole. Frictional resistance prevents the screw from rotating relative to the screw hole to loosen. Or, apply gel to the thread or deform part of the thread to increase the frictional resistance between the thread and the internal thread of the screw hole to prevent the screw from rotating relative to the screw hole.

As for the leakage prevention effect of the screw, the prior art is to install an O-ring under the screw head and lock the screw in the screw hole so that the O-ring is clamped outside the screw head and the periphery of the screw hole. Between the surfaces. The O-ring is squeezed and deformed to fill the gap between the screw head and the outer surface of the screw hole, so that the O-ring blocks the fluid flow path to achieve the sealing effect between the screw and the screw hole. Alternatively, a protruding tooth is formed on the lower surface of the screw head, and the screw is locked in the screw hole. The convex tooth is inserted into the outer surface of the screw hole in a destructive manner to block the gap between the screw head and the screw hole. The gap between the outer surfaces achieves the purpose of sealing.

However, the prior art does not propose a technical solution to prevent the screw from loosening and to prevent leakage. Furthermore, the prior art cannot achieve the technical purpose of preventing loosening and preventing leakage while keeping the outer surface of the screw hole from being damaged.

Therefore, the purpose of this creation is to provide an anti-loosening and leak-proof screw-fastening component that prevents the threaded fastener from loosening from the screw hole while keeping the outer surface of the screw hole intact and achieves the goal of the threaded fastener and the screw hole. Seal between.

The technical means used in this creation to solve the problems of the conventional technology is to provide an anti-loose and leak-proof screw member, including: a screw body with a locking head, a connecting neck, a first connecting part, and a threaded part , The locking head is located at one end of the screw body, the connecting neck is formed by protruding from the bottom surface of the locking head toward the other end of the screw body, and the first coupling part is located at the connecting neck And the threaded portion is adjacent to the connecting neck and the threaded portion, and the outer surface of the threaded portion is formed with a first external thread; and a tight coupling member having a covering portion and a second coupling portion, the tight coupling member is Tubularly sleeved on the outer surface of the connecting neck and the first connecting portion of the screw body, the covering portion covers the outer surface of the connecting neck, and the second connecting portion is installed and connected to the first connecting The outer surface of the second connecting portion, and the outer surface of the second connecting portion is formed with a second outer thread that is continuous with the first outer thread, wherein the tight-fitting connecting piece is made of plastic material and is used in the anti-loosening and leak-proof screw member When locked in the screw hole, the second external thread of the second coupling part is in close contact with the internal thread of the screw hole, and friction is formed between the second external thread and the internal thread and the gap is isolated to prevent the The anti-loose and non-leakage screw member is loosened from the screw hole to achieve a seal between the anti-loose and non-leak screw member and the screw hole, and the anti-loose and non-leak screw member is locked to the screw When opening, the covering portion can isolate the gap between the second coupling portion and the internal thread of the screw hole, so as to further form a seal between the anti-loosening and leak-proof screw member and the screw hole.

In an embodiment of the present creation, a loosening and leak-proof screw fixing member is provided, wherein the top surface of the fixing head of the screw body is formed with a character groove, a cross groove, an inner hexagonal groove, or a star形槽.

In an embodiment of the present invention, an anti-loosening and leak-proof screw member is provided, wherein the locking head of the screw body has a hexagonal outline.

In an embodiment of the present invention, an anti-loose and leak-proof screw member is provided, wherein the outer diameter of the connecting neck of the screw body is smaller than the outer diameter of the locking head.

In an embodiment of the present invention, there is provided an anti-loosening and leak-proof screw member, wherein the connecting neck of the screw body is protrudingly formed in a way that the outer diameter is tapered, so that the connecting neck is formed from the lock The bottom surface of the fixing head faces the inclined outer surface of the other end of the screw body, and the tight coupling piece is covered by injection molding on the connecting neck of the screw body and the first coupling part, The covering part forms an inclined inner surface corresponding to the connecting neck portion to cover the outer surface of the connecting neck portion.

In an embodiment of the present invention, a loosening and leak-proof screw fixing member is provided, wherein the first coupling portion of the screw body has a plurality of grooves arranged at intervals, and the tight coupling member is wrapped by injection molding. Cover the connecting neck of the screw body and the first connecting portion, so that the second connecting portion forms a tenon corresponding to the groove and is installed and connected to the outer portion of the first connecting portion surface.

In an embodiment of the present creation, a loosening and leak-proof screw-fastening member is provided, wherein the first coupling part of the screw body has a plurality of tenons arranged at intervals, and the close-fitting coupling part is enclosed by injection molding. Cover the connecting neck of the screw body and the first connecting portion, so that the second connecting portion forms a groove corresponding to the tenon and is installed and connected to the outer portion of the first connecting portion surface.

In an embodiment of the present invention, an anti-loosening and leak-proof screw member is provided, wherein the tight coupling member is a tubular elastic member of plastic or rubber.

In one embodiment of the present invention, there is provided an anti-loose and leak-proof screw member, wherein the outer diameter of the second external thread of the second coupling portion is larger than the outer diameter of the first external thread of the threaded portion , And in the case that the threaded part of the screw body is threadedly connected to the internal thread of the screw hole, the second external thread interferes with the internal thread of the screw hole and is closely connected to the internal thread.

The following technical effects can be obtained through the technical means used in the anti-loose and non-leakage screw-fixed component of this creation. This creation can prevent the anti-loose and anti-leak screw member from loosening from the screw hole while keeping the outer surface of the screw hole intact, and can also achieve the anti-loose and anti-leak screw member and the screw hole. The seal between. In addition, this creation can further form a double seal between the anti-loose and leak-proof screw member and the screw hole.

The following describes the implementation of this creation based on Figures 1 to 4. This description is not intended to limit the implementation of this creation, but is a kind of embodiment of this creation.

As shown in FIG. 1 and FIG. 4, an anti-loose and leak-proof screw member 100 according to an embodiment of the present creation includes: a screw body 1 and a tight coupling member 2.

As shown in FIGS. 1 to 3, the screw body 1 has a locking head 11, a connecting neck 12, a first coupling part 13, and a threaded part 14. The locking head 11 is located at one end of the screw body 1. Furthermore, the screw body 1 can be a screw, but the present creation is not limited to this, and the screw body 1 can also be a bolt.

In detail, according to the anti-loose and leak-proof screw member 100 according to an embodiment of the present invention, the top surface of the locking head 11 of the screw body 1 is formed with a groove, a cross groove, and an inner hexagon Slots, or star slots (not shown in the drawings in this creation), are used for a one-word, cross, inner hexagon, or star screwdriver to be secured to the top surface of the locking head 11. Thereby, the technical concept of the anti-loosening and anti-leakage screw member 100 of this creation can be applied to screw-type threaded fasteners.

Alternatively, according to the anti-loose and leak-proof screw member 100 according to an embodiment of the present creation, the locking head 11 of the screw body 1 has a hexagonal outline (not shown in the drawing of the present creation). Thereby, the technical concept of the anti-loosening and leak-proof screw-fixing member 100 of this creation can be applied to bolt-like threaded fasteners.

As shown in FIGS. 2 and 4, the connecting neck 12 is formed to protrude from the bottom surface of the locking head 11 toward the other end of the screw body 1. According to the anti-loose and leak-proof screw member 100 according to an embodiment of the present invention, the outer diameter of the connecting neck 12 of the screw body 1 is smaller than the outer diameter of the locking head 11. In detail, the connecting neck 12 is formed by protruding with a tapered outer diameter, so that the connecting neck 12 forms an outer surface inclined from the bottom surface of the locking head 11 toward the other end of the screw body 1 .

As shown in FIGS. 2 to 4, the first coupling portion 13 is located between the connecting neck 12 and the threaded portion 14 and adjacent to the connecting neck 12 and the threaded portion 14. Furthermore, according to the anti-loose and leak-proof screw member 100 according to an embodiment of the present invention, the first coupling portion 13 of the screw body 1 has a plurality of grooves 131 arranged at intervals. Of course, this creation is not limited to "the first coupling part 13 has a plurality of grooves 131 arranged at intervals". The first coupling part 13 of the screw body 1 may also have a plurality of tenons arranged at intervals (this The creation scheme is not shown).

As shown in Figures 1 and 2, the outer surface of the threaded portion 14 of the screw body 1 is formed with a first external thread.

As shown in FIGS. 1 to 3, the close bonding member 2 has a covering portion 21 and a second bonding portion 22. The tight coupling member 2 is tubularly sleeved on the outer surface of the connecting neck 12 and the first coupling portion 13 of the screw body 1. In other words, the covering portion 21 covers the outer surface of the connecting neck 12. Furthermore, the second coupling portion 22 is installed and connected to the outer surface of the first coupling portion 13, and the outer surface of the second coupling portion 22 forms a second external thread that is continuous with the first external thread.

In detail, according to the anti-loose and anti-leak screw member 100 according to an embodiment of the present invention, when the connecting neck 12 is formed by protruding with a tapered outer diameter as described above, the tight joint 2 is ejected The molding method covers the connecting neck 12 and the first connecting portion 13 of the screw body 1. In this way, the present invention enables the covering portion 21 to form an inclined inner surface corresponding to the connecting neck 12 to cover the outer surface of the connecting neck 12.

Specifically, according to the anti-loose and leak-proof screw member 100 according to an embodiment of the present invention, the outer diameter of the second external thread of the second coupling portion 22 is larger than the first external thread of the thread portion 14 When the threaded portion 14 of the screw body 1 is threadedly connected to the internal thread of the screw hole H, the second external thread interferes with the internal thread of the screw hole H. Closely connected to the internal thread.

Furthermore, as shown in Figures 2 to 4, in the case that "the first coupling portion 13 of the screw body 1 has a plurality of grooves 131 arranged at intervals", the tight coupling member 2 is injection molded The way is wrapped around the connecting neck 12 and the first joining portion 13 of the screw body 1, so that the second joining portion 22 forms a tenon 221 corresponding to the groove 131 for installation Connected to the outer surface of the first joining portion 13. With the tenon 221 of the second coupling portion 22 embedded in the groove 131 of the first coupling portion 13, during the process of locking the anti-loosening and leak-proof screw member 100 to the screw hole H, this creation It can be ensured that there is no relative rotation between the screw body 1 and the tight joint 2.

On the contrary, if this creation is in the case of "the first joint 13 of the screw body 1 has a plurality of tenons arranged at intervals (not shown in the drawing of this creation)", then the close-fitting joint 2 is injection molded The method of covering the connecting neck 12 and the first joint 13 of the screw body 1 makes the second joint 22 form a groove corresponding to the tenon (this creation The figure is not shown) and is installed and connected to the outer surface of the first coupling portion 13. That is to say, the interlocking between the tenon of the first coupling portion 13 and the groove of the second coupling portion 22 prevents relative rotation between the screw body 1 and the tight coupling member 2.

Specifically, as shown in FIG. 4, the close-contact bonding member 2 is made of a plastic material, such as plastic (for example, nylon) or rubber. That is, according to an embodiment of the present invention, the anti-loose and anti-leak screw member 100, wherein the tight coupling member 2 is a tubular elastic member of plastic or rubber.

As shown in Figure 4, when the anti-loosening and leak-proof screw member 100 is locked in the screw hole H, the second external thread of the second coupling portion 22 is in close contact with the internal thread of the screw hole H, and The second external thread and the internal thread form friction and isolate the gap. Therefore, the present invention can prevent the anti-loosening and anti-leakage screw member 100 from loosening from the screw hole H, and achieve a seal between the anti-loosening and anti-leak screw member 100 and the screw hole H.

Furthermore, as shown in Fig. 4, the screw body 1 can be further provided with a washer W so that the connecting neck 12 corresponds to the washer W in position and the bottom surface of the locking head 11 is pressed against By the washer W. Therefore, when the anti-loose and leak-proof screw member 100 is locked in the screw hole H, the covering portion 21 located between the connecting neck 12 and the outer surface of the screw hole H can isolate the first The gap between the two connecting portions 22 and the internal thread of the screw hole H further forms a seal between the anti-loosening and leak-proof screw member 100 and the screw hole H. In other words, through the covering part 21 and the second joining part 22 of the tight joint 2 in this creation, the anti-loosening and leak-proof screw member 100 can be tightly joined without damaging the outer surface of the screw hole H In the screw hole H, the technical effect of preventing leakage is formed.

It can be seen from the above that the anti-loose and anti-leak screw member 100 of the present invention can interfere with the internal thread of the screw hole H through the second external thread of the second coupling portion 22 of the tight coupling member 2 to be tightly connected to the The internal thread is used to prevent the anti-loose and anti-leakage screw member 100 from loosening from the screw hole H, and can also achieve a seal between the anti-loose and anti-leak screw member 100 and the screw hole H. Moreover, when the anti-loose and leak-proof screw member 100 is locked in the screw hole H, the present invention isolates the second coupling portion 22 from the internal thread of the screw hole H by the covering portion 21 of the tight coupling member 2 The gap between the two can further form a double seal between the anti-loosening and anti-leakage screw member 100 and the screw hole H. Therefore, under the condition of keeping the outer surface of the screw hole H intact, this invention can also achieve the technical purpose of preventing loosening and preventing leakage of the threaded fastener.

The above descriptions and descriptions are only descriptions of the preferred embodiments of this creation. Those with general knowledge of this technology should make other modifications based on the scope of patent application defined below and the above descriptions, but these modifications should still be made. It is the creative spirit of this creation and within the scope of rights of this creation.

100: Anti-loose and leak-proof screw-fixed components 1: Screw body 11: Lock the head 12: Connect the neck 13: The first joint 131: Groove 14: Threaded part 2: Closed joint 21: Covering part 22: The second joint 221: Tenon H: screw hole W: Washer

[Picture 1] is a schematic diagram showing the appearance of an anti-loose and leak-proof screw member according to an embodiment of this creation; [Figure 2] is a schematic diagram showing the appearance of the screw body in the anti-loosening and leak-proof screw-fixing member according to this creative embodiment; [Figure 3] is a schematic diagram showing the cross-section at the line 3-3 of Figure 2 according to this creative embodiment; and [Figure 4] is a schematic cross-sectional view showing the anti-loosening and leak-proof screw-fastening member according to this creative embodiment is fastened to the screw hole through a washer.

100: Anti-loose and leak-proof screw-fixed components

1: Screw body

11: Lock the head

2: Closed joint

21: Covering part

22: The second joint

Claims (9)

An anti-loose and leak-proof screw-fixed component, including: The screw body has a locking head, a connecting neck, a first coupling part, and a threaded part. The locking head is located at one end of the screw body, and the connecting neck faces from the bottom surface of the locking head The other end of the screw body is formed by protruding, the first coupling portion is located between the connecting neck and the threaded portion and adjacent to the connecting neck and the threaded portion, and the outer surface of the threaded portion is formed with a first outer surface Thread; and The tight joint has a covering part and a second joint. The close joint is tubularly sleeved on the connecting neck of the screw body and the outer surface of the first joining part, and the covering part covers the Connecting the outer surface of the neck, the second coupling portion is installed and connected to the outer surface of the first coupling portion, and the outer surface of the second coupling portion forms a second external thread continuous with the first external thread, Wherein, the tight coupling member is made of plastic material. When the anti-loosening and leak-proof screw member is locked to the screw hole, the second external thread of the second coupling portion is tightly connected to the internal thread of the screw hole, and The second external thread and the internal thread form a frictional force and isolate the gap, so as to prevent the anti-loosening and anti-leakage screw member from loosening from the screw hole and achieve a connection between the anti-loosening and anti-leak screw member and the screw hole Seal between, and, When the anti-loose and anti-leak screw member is locked to the screw hole, the covering portion can isolate the gap between the second coupling portion and the internal thread of the screw hole to further form the anti-loose and anti-leak screw The seal between the solid component and the screw hole. The anti-loosening and leak-proof screw member according to claim 1, wherein the top surface of the locking head of the screw body is formed with a character groove, a cross groove, an inner hexagonal groove, or a star groove. The anti-loose and leak-proof screw member according to claim 1, wherein the locking head of the screw body has a hexagonal outline. The anti-loose and leak-proof screw member according to claim 1, wherein the outer diameter of the connecting neck of the screw body is smaller than the outer diameter of the locking head. The anti-loose and leak-proof screw member according to claim 1, wherein the connecting neck of the screw body is formed by protruding in a manner of tapering outer diameter, so that the connecting neck is formed from the locking head The bottom surface faces the inclined outer surface of the other end of the screw body, and the tight coupling piece is covered by injection molding on the connecting neck and the first coupling portion of the screw body, so that the package The covering portion forms an inclined inner surface corresponding to the connecting neck portion and covers the outer surface of the connecting neck portion. The anti-loose and leak-proof screw member according to claim 1, wherein the first coupling portion of the screw body has a plurality of grooves arranged at intervals, and the tight coupling member is coated on the screw by injection molding The connecting neck portion of the solid body and the first connecting portion are formed so that the second connecting portion forms a tenon at a position corresponding to the groove to be installed and connected to the outer surface of the first connecting portion. The anti-loose and leak-proof screw member according to claim 1, wherein the first coupling portion of the screw body has a plurality of tenons arranged at intervals, and the tight coupling member is covered on the screw by injection molding The connecting neck portion of the solid body and the first connecting portion are formed so that the second connecting portion forms a groove corresponding to the tenon to be installed and connected to the outer surface of the first connecting portion. The anti-loose and leak-proof screw member according to claim 1, wherein the tight joint is a tubular elastic piece of plastic or rubber. The anti-loosening and leak-proof screw member according to claim 1, wherein the outer diameter of the second external thread of the second coupling part is greater than the outer diameter of the first external thread of the threaded part, and the When the threaded part of the screw body is threadedly connected to the internal thread of the screw hole, the second external thread interferes with the internal thread of the screw hole and is closely connected to the internal thread.

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