JP7049304B2 - Integrally molded screw member with enhanced airtightness - Google Patents

Description

The present invention relates to a threaded member, and more particularly to an integrally molded threaded member having enhanced airtightness.

As shown in FIGS. 1 to 2, the conventional screw member is provided with a horizontal arrangement surface 41 mainly at the bottom of the screw member 40 and a rotating portion 42 which exhibits a vertical arrangement at the center of the top of the screw member 40. Be done. An external thread section 43 is provided at the center of the bottom of the horizontal arrangement surface 41. A storage recess 44 used for storing and installing a washer 50 is provided on the horizontal arrangement surface 41. The washer 50 is made of a soft material, a perforation 51 is provided in the center of the washer 50, and the perforation 51 of the washer 50 is drilled so as to cover the external thread section 43 of the screw member 40. As long as the user engages the drive tool with the rotating portion 42, the screw member 40 is driven and swiveled in the object 30 (shown in the figure is an example of a baked coated corrugated sheet). The horizontal arrangement surface 41 is pressed flat by the washer 50 until the washer 50 comes into contact with the object 30.

However, at the time of implementing and using the screw member as described above, when the screw member 40 is tightened as shown in FIG. 2, it cannot be guaranteed that the accommodating groove 44 and the washer 50 exhibit a horizontal state, and the screw member 40 cannot be guaranteed to be in a horizontal state. In order to prevent the washer 50 from shifting due to turning, a gap is likely to occur, and in this state, liquid or gas flows inward from the outer periphery of the horizontal arrangement surface 41 of the screw member 40 to the inner surface of the object 30. It has been pointed out that there is a drawback that the sealing effect deteriorates due to bleeding.

Therefore, the subject of the present invention is that when the screw member is tightened, the space between the accommodating groove and the washer is in a horizontal state, and the position is not displaced even when the washer is swiveled, and no gap is generated. It is an object of the present invention to provide a screw member capable of preventing the intrusion of liquids, gases and the like.

Therefore, as a result of diligent studies to solve the above-mentioned problems of the present invention, the present inventor pays attention to the fact that at least an integrally molded screw member can solve the above-mentioned problems, as will be described later. We focused on the fact that we could contribute to the solution of the problem by adding further improvements, and came up with the present invention based on such findings.
That is, in the integrally molded screw member with enhanced airtightness of the present invention, a rotating portion is provided on the head of the screw member, and a convex portion and a concave portion for strengthening the integrally molded airtightness are provided on the bottom of the screw head. An external thread section is provided below the thread member, a washer is attached to the external thread section, and at least one integrally molded airtightness is provided on the outer peripheral portion and the inner peripheral portion of the bottom of the screw head. A convex portion and a concave portion for strengthening are provided.

Thus, the gist of the present invention is as described in the following (1) to (6).
(1) An integrally molded screw member with enhanced airtightness.
A rotating portion is provided on the head of the threaded member, an external thread section is provided below the threaded member, a washer is provided on the external thread section, and at least one or more pieces are integrated on the bottom of the threaded member. A convex portion and a concave portion for strengthening the molded hermetic seal are provided, and when the screw member is tightened to an object, the convex portion and the concave portion for strengthening the airtightness of the screw head bottom portion push the screw member onto the washer. By being applied, the outer diameter of the washer is expanded and increased outward to form an expanded portion, and at the same time, the convex portion and the concave portion are used to increase the airtightness of the washer. An integrally molded screw member with enhanced airtightness.

(2) The integrally molded screw member having enhanced airtightness according to the above (1), wherein the screw member is one of hexagonal, plum blossom and circular, which is selected and implemented.

(3) The integrally molded screw member having enhanced airtightness according to the above (1), wherein the convex portions are formed intermittently and alternately.

(4) The integrally molded screw member having enhanced airtightness according to the above (1), wherein the convex portion and the concave portion are continuously provided.

(5) The integrally molded screw member with enhanced airtightness according to (1) above, wherein the convex portion is installed on the outer peripheral portion and the inner peripheral portion of the screw head bottom portion.

(6) The integrally molded screw member having enhanced airtightness according to the above (1), wherein the washer is made of a flexible material.

According to the present invention, when the screw member is tightened, it is pressed by the washer to elastically deform it, and the convex portion and the concave portion are used to form a wave-shaped continuous closed portion, thereby improving the sealing property of the washer. It increases, prevents liquids and gases from penetrating and invading the object, and improves the sealing effect.

It is an exploded perspective view of the screw member which concerns on the prior art. It is sectional drawing which shows the use state of the screw member which concerns on the prior art. It is a combination perspective view of the screw member which concerns on embodiment (1) of this invention. It is an exploded perspective view and a partially enlarged view of the screw member which concerns on embodiment (1) of this invention. It is a combination sectional view of the screw member which concerns on embodiment (1) of this invention. It is a usage state diagram of the screw member which concerns on embodiment (1) of this invention. It is a tightening state diagram at the time of construction of the screw member which concerns on embodiment (1) of this invention. It is a partially enlarged view of the tightened state at the time of construction of the screw member shown in FIG. 7. It is a combination perspective view of the screw member which concerns on embodiment (2) of this invention. It is an exploded perspective view and a partially enlarged view of the screw member which concerns on embodiment (2) of this invention. It is a combination sectional view of the screw member which concerns on embodiment (2) of this invention. FIG. 11 is an EE cut surface view of the screw member of FIG.

Embodiment 1

As shown in FIGS. 3 to 5, the integrally molded screw member having enhanced airtightness according to the first embodiment of the present invention includes a screw member 10 and a washer 20.

Among them, a rotating portion 12 exhibiting a vertical arrangement is provided at the center of the top of the screw member 10, and the screw member 10 can be driven and swiveled as long as the user engages the driving tool with the rotating portion 12. An external thread section 13 is provided at the center of the bottom of the bottom of the screw head 11, and a first flat surface 14 and a first convex portion 15 are provided at the outer peripheral portion of the bottom of the bottom of the screw head 11. A second flat surface 16 and a second convex portion 17 are provided in contact with the vicinity of the portion 15, and a first concave portion 18 is provided between the inner circumference of the screw head bottom portion 11 and the outer thread section 13.

The washer 20 is made of a soft material, a perforation 21 is provided in the center of the washer 20, and the perforation 21 of the washer 20 is perforated in an external thread section 13 of an integrally molded screw member 10 having enhanced airtightness. Will be set up.

Among them, the screw member 10 can be implemented by selecting one of hexagonal, plum blossom and circular.

According to the above structure, the screw member according to the present invention is as follows in actual operation application.

As shown in FIG. 6, as long as the user engages the drive tool with the rotating portion 12, the screw member 10 is driven and swiveled and tightened in the object 30 (shown in the figure is a baking finish corrugated sheet). be able to.

As shown in FIG. 7, when the external thread section 13 of the screw member 10 is tightened to the object 30, the washer 20 is pressed flat against the washer 20 by the screw head bottom portion 11 until the washer 20 comes into contact with the object 30. The outer diameter of the washer 20 is expanded and increased outward to form the expansion portion 22, and at the same time, the first convex portion 15 on the outer periphery of the screw head bottom portion 11 and the second convex portion 17 on the inner circumference are used. Then, if the washer 20 is occluded and fitted downward on the surface of the washer 20, and the washer 20 is also elastically deformed and expanded upward to fill the first recess 18, the construction is completed.

As shown in FIG. 8, when a liquid or gas seeps inward from the outer circumference of the screw head bottom portion 11, the first convex portion 15 and the inner circumference of the outer circumference are between the screw member 10 and the washer 20. Since the second convex portion 17 and the first concave portion 18 form a wave-shaped continuous closed area, it is possible to prevent liquids and gases from continuously invading the inner surface of the object 30 and enhance the airtightness. can.

Embodiment 2

As shown in FIGS. 9 to 12, in the integrally molded screw member having enhanced airtightness according to the second embodiment of the present invention, the first convex portion 15 and the second convex portion 17 are intermittent and discontinuous. It becomes continuous and exhibits a state in which the arrangement positions of the first convex portion 15 and the second convex portion 17 are alternately formed.

INDUSTRIAL APPLICABILITY 10 Thread member 11 Thread head bottom portion 12 Rotating portion 13 External thread section 14 First plane 15 First convex portion 16 Second flat surface 17 Second convex portion 18 First concave portion 20 Washer 21 Drilling 22 Expansion portion 30 Object Conventional Technology 40 Thread member 41 Horizontal arrangement surface 42 Rotating part 43 External thread section 44 Accommodating groove 50 Washer 51 Drilling

Claims (3)

An integrally molded screw member that is combined with a washer to enhance airtightness.
A rotating portion is provided on the head of the threaded member, an external thread section is provided below the threaded member, the washer is provided on the external thread section, and at least one or more integrally molded on the bottom of the threaded head. A convex portion and a concave portion for strengthening the sealed seal are provided, and when the screw member is tightened to an object, the convex portion and the concave portion for strengthening the airtightness of the bottom of the screw head are pressed against the washer. As a result, the washer is elastically deformed and filled in the concave portion, and at the same time, the outer diameter of the washer is expanded and increased outward to form an expanded portion, and at the same time, the convex portion and the concave portion are used. It is an integrally molded screw member with enhanced airtightness that increases the airtightness of the washer against the ingress of gas and liquid .
The convex portions are formed intermittently and alternately at the annular outer peripheral portion and the annular inner peripheral portion of the bottom of the screw head.
The recess is formed deeper than the flat surface portion on the flat surface portion of the bottom surface of the screw head bottom portion .
On the bottom surface of the bottom of the screw head, from the outer peripheral side toward the center, the flat portion, the convex portion in the outer peripheral portion of the annular portion, the flat portion, the convex portion and the concave portion in the inner peripheral portion of the annular portion are formed. , Formed in order,
The washer is characterized by being made of a soft material .
A combination of washers and integrally molded screw members with enhanced airtightness. The combination of the washer according to claim 1 and the screw member, wherein the plane of the rotating portion of the screw member is one of hexagonal, plum blossom, and circular. The combination of the washer according to claim 1 and the screw member, wherein the convex portion is provided intermittently and the concave portion is continuously provided.

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