JP2002276632A - Plug member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate mounting work, to improve engagement strength and to reduce cost. SOLUTION: This plug member is constituted of a flange part 5 to make contact with a wall member 2 and an insertion member 10 continuously provided on the flange part 5 and having an engagement projection 18 to be inserted in a wall insertion hole 7 of the wall member 2 and to be projected in the radial direction on an outer periphery and mounts a mounting part of an article 3 to mount on the wall member 2 by a screw member 4. The insertion member 10 is constituted of a fixed side member 11 integrated with the flange part 5 and a moving side member 14 having an engagement projection 18 to move to the side of the flange part 5 while increasing an outside diameter larger when the screw member 4 is screwed on it, the moving side member 14 has a pair of movable leg parts 17 to face against each other head ends of which are free ends, an engagement recessed part 20 is provided on one of facing surfaces of each of the movable leg parts 17 and an engagement part 21 is provided on the other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plug member which is attached to a wall member in advance so that a screw member for attaching any article such as a towel rail attached to the wall member is fixed to the wall member.

[0002]

2. Description of the Related Art Conventionally, a flange portion which comes into contact with a wall member,
It is composed of a member having an engaging projection, which is connected to the flange portion and protrudes radially outward from the outer periphery, and has a dividing groove in the generatrix direction. A plug member inserted into the wall insertion hole of the wall member is known. Although not known in the prior art, Japanese Patent Application No. 2000-281 filed earlier by the same applicant.
No. 328 includes a cylindrical member having a flange portion abutting on a wall member, and a cylindrical member having an engaging projection radially protruding on an outer periphery inserted into the wall insertion hole of the wall member and connected to the flange portion. In the attachment for attaching an attachment portion of an article to be attached to a member with a screw member, the cylindrical member includes a fixed-side member integrated with the flange portion, and an outer diameter that is increased when the screw member is screwed. A movable side member having an engaging projection that moves to the part side, a plurality of split grooves are formed in the movable side member, and the fixed side member and the movable side member are connected by a plurality of oblique movable pieces. The proposed plug member has been proposed.

[0003]

The above-mentioned known plug member has a structure in which a part thereof becomes large in diameter simply by screwing a screw member, and an engaging projection on the outer periphery is engaged with the wall member. There is a problem that strength cannot be secured. That is, although the play in the radial direction with respect to the axial direction of the plug member is stopped to some extent by the engagement projection, there is no measure against the play in the axial direction, so that sufficient strength cannot be secured. Further, the above-mentioned prior art solves the above-mentioned problem, but simply forms a plurality of split grooves in the movable member, and the split groove is deformed with the distal end of the movable member as a free end. Therefore, the problem that the difference in outer diameter between the small-diameter state and the large-diameter state is small, and the fixed-side member and the moving-side member are connected by a plurality of oblique movable pieces, thus complicating the mold. However, there is a problem that the cost is high. Therefore, the present application has solved the above-mentioned problem by devising a shape.

[0004]

The object of the present invention is to facilitate the mounting work, improve the engagement strength, and reduce the cost.

[0005]

According to the present invention, a flange portion 5 abutting against a wall member 2 and a radially projecting outer periphery which is connected to the flange portion 5 and is inserted into a wall insertion hole 7 of the wall member 2 are provided. And an attachment member 10 having an engaging projection 18 for mounting the article 3 to be attached to the wall member 2 by means of the screw member 4. The insertion member 10 is a fixed side integral with the flange portion 5. It comprises a member 11 and a moving side member 14 having an engagement projection 18 that moves toward the flange portion 5 while increasing the outer diameter when the screw member 4 is screwed, and the moving side member 14 has a distal end. A plug member having a pair of free movable ends 17 opposed to each other, with an engaging recess 20 provided on one of the opposing surfaces of each movable leg 17 and an engaging portion 21 provided on the other. is there. The present invention relates to the wall member 2
And an insertion member 10 having a radially protruding engagement projection 18 on the outer periphery inserted into the wall insertion hole 7 of the wall member 2 and connected to the flange portion 5. 2 for mounting the mounting portion of the article 3 to be mounted on the mounting member 2 with the screw member 4.
A fixed-side member 11 integral with the flange portion 5 and a movable-side member 14 having an engagement protrusion 18 that moves toward the flange portion 5 while increasing the outer diameter when the screw member 4 is screwed. The fixed-side member 11 and the movable-side member 14 are plug members connected to each other via a pair of opposing movable pieces 13 formed so as to be deformable by a pair of opposing window holes 15. .

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
Is a plug member for attaching the attachment portion of any article 3 attached to the wall member 2 such as a towel rail with the screw member 4,
An arbitrary-shaped flange portion 5 is formed on a base portion of a synthetic resin material. Triangular pyramid-shaped protrusions 6 protruding toward the wall member 2 side are provided on the wall member 2 side of the flange portion 5 at predetermined intervals in the circumferential direction, and the protrusions 6 are provided on the plug member 1 provided on the wall member 2. Is in contact with the inner periphery of the wall insertion hole 7 through which the plug member 1 is inserted, and acts as a detent for the plug member 1.

The flange portion 5 is provided with an insertion member 10 protruding toward the wall member 2 side. The fixed-side member 11 of the insertion member 10 communicates with the insertion hole 12 of the flange portion 5 to be integrally formed, and a movable-side member 14 is provided on the leading side of the fixed-side member 11 via the movable piece 13 in the axial direction. And the insertion member 10 is movably provided. A pair of opposed window holes 15 are formed in the insertion member 10, and portions other than the window holes 15 serve as the movable pieces 13. That is, the insertion member 10 of the embodiment is formed in a rectangular tube shape in a plan view, the movable piece 13 and the window hole 15 are provided so as to face each other, and the movable member 14 is fixed to the fixed member 1.
The movable piece 13 is configured to bend and deform radially with respect to the axial direction when moved to the first side.

The movable side member 14 is provided with the movable piece 1
A movable base tube portion 16 formed in a tubular shape so as to connect the pair of movable members 13 is provided following the pair 3, and a pair of movable legs extending in the extension direction of the movable member 13 at the tip end of the movable base tube portion 16. Part 1
7 are formed, and the wall member 2
Is formed. The engagement protrusions 18 protrude radially with respect to the axis of the movable member 14, and are formed at a predetermined interval in the generatrix direction of the movable member 14.
A vertical groove 19 is formed between the pair of movable legs 17, and the distal end of the movable leg 17 is formed at a free end by the vertical groove 19.

An engaging recess 20 is formed on one of the opposing surfaces (inner surfaces) of the pair of movable legs 17.
An engaging portion 21 that engages with the engaging concave portion 20 is formed on one of the other opposing surfaces (inner surfaces).
1 are engaged with each other to fill the vertical groove 19,
4 is made smaller in diameter. That is, by making the outer diameter of the moving side member 14 small, insertion into the wall insertion hole 7 is facilitated,
When the screw member 4 is screwed into the movable member 14, the screw member 4 is moved to the fixed member 11, the outer diameter of the movable member 14 is increased, and the engagement protrusion 18 is engaged with the inner periphery of the wall insertion hole 7. Combine.

Therefore, the vertical groove 19 allows the engagement projection 18 to be inserted into the wall insertion hole 7, and the amount of protrusion projected into the inner periphery of the wall insertion hole 7 when the screw member 4 is screwed. And ensure a reasonable configuration. In other words, the outer diameters of the fixed-side member 11 and the movable-side member 14 are substantially the same, and the engaging projection 18 projects radially from the outer diameter of the movable-side member 14. 17 are coupled by the action of the engaging recess 20 and the engaging portion 21 so that the outer diameter of the engaging projection 18 is made as small as possible, and the inner diameter of the wall insertion hole 7 is made as small as possible. That is, the wall insertion hole 7 is formed to have an inner diameter that allows the engagement projection 18 to be inserted through the wall member 2 by drilling, and the plug member 1 is inserted into the wall insertion hole 7 to insert the flange portion 5 into the wall member 2.
Then, the mounting portion or mounting bracket of the article 3 is applied to the flange portion 5, and the screw member 4 is screwed to the plug member 1 in this state, and the engaging projection 18 is inserted into the wall insertion hole 7. Is fixed to the wall member 2 by attaching the mounting portion or the mounting bracket of the article 3.

Reference numeral 22 denotes a narrow portion formed on the base side of the movable leg 17 of the movable member 14 to facilitate the deformation of the movable leg 17. Thus, the fixed-side member 11 and the moving-side member 14 are formed of synthetic resin, and the screw member 4 is screwed while forming a groove in the inner periphery of the fixed-side member 11 and the moving-side member 14. Thus, when the screw member 4 is screwed, the movable member 14 is moved toward the fixed member 11 by the reaction force. Therefore, it is preferable that the screw member 4 be called a tapping screw or the like and be screwed even without a screw groove, since the screwed state is further strengthened. Thus, the wall member 2 of the embodiment has a three-layer structure including a soft wall component member 25 between the hard wall components 23 and 24 on the front side and the back side, while the plug member 1 is engaged. When the projection 18 is formed to have a length protruding farther than the rear hard wall component member 24 and is inserted through the wall member 2 and the screw member 4 is screwed, the engagement projection 18 spreads radially. It moves forward and engages with the back surface of the back hard wall component 24. In particular, it is preferable that at least both the rear hard wall component 24 and the front hard wall component 23 are formed of a metal plate, because the engagement portion with the engagement projection 18 becomes strong.

The length of the plug member 1 is such that the engaging projection 18 protrudes farther than the rear hard wall component member 24 with respect to the thickest wall member 2, and is formed in the axial direction. The distance between the fixed-side member 11 and the movable-side member 14 is made larger than the distance between the engaging projections 18,
Is configured to reliably abut and engage the rear hard wall component 24.

[0013]

Next, the operation will be described. The plug member 1 is a wall member 2
A movable side member 14 that is axially movable via a fixed side member 11 and a movable piece 13
The movable member 14 is formed with a pair of movable legs 17 each having a free end at the distal end of a cylindrical movable base cylindrical portion 16 following the movable piece 13 by a longitudinal groove 19 in the generatrix direction. An engaging projection 18 is formed on the outer periphery of the movable leg 17, and an engaging recess 20 and an engaging portion 21 are formed on the inner surface of the movable leg 17, respectively. When the engaging recess 20 of 17 is engaged with the engaging portion 21, the vertical groove 19 is crushed and the outer shape of the movable member 14 is reduced in diameter.

Next, a wall insertion hole 7 through which the plug member 1 can be inserted by a drill or the like is formed in the wall member 2, and the plug member 1 is inserted into the wall insertion hole 7, and the flange portion 5 is applied to the wall member 2. Contact In this case, the fixed side member 11 of the plug member 1
The inner diameter of the movable member 17 is substantially the same as the outer diameter of the screw member 4. However, since the movable legs 17 of the movable member 14 are small in diameter, they can be easily inserted into the wall insertion hole 7. In particular, since the moving side member 14 has a small diameter, the engaging projection 18 is
Is prevented from being caught on the inner circumference of the device, thereby facilitating insertion.

Then, the mounting portion or the mounting bracket of the article 3 is applied to the flange portion 5 of the plug member 1 in this state, and then the screw member 4 is screwed to the plug member 1.
When the screw member 4 is screwed into the plug member 1, the inner diameter of the fixed side member 11 of the plug member 1 is substantially the same as the outer diameter of the screw member 4, but the movable legs 17 of the movable side member 14 are attached to each other. Since the diameter is small, the moving-side member 14 protrudes in the radial direction by the outer diameter of the screw member 4 and has a large diameter. Therefore,
The outer diameter of the moving side member 14 is larger than the wall insertion hole 7, and the engagement projection 18 is securely engaged with the inner surface of the wall insertion hole 7.

In this case, the movable side member 14 has a pair of movable legs 17 formed with a vertical groove 19 interposed therebetween, and the movable leg 17 is engaged with the engagement recess 20. Joint 21
When the screw member 4 is screwed into the moving side member 14, the outer diameter of the moving side member 14 becomes smaller when the screw member 4 is screwed into the moving side member 14. The difference between the diameters is large. Therefore, the amount of change in the outer diameter is the amount of engagement of the engagement projection 18 with the inner periphery of the wall insertion hole 7, and the engagement of the engagement projection 18 becomes strong. Since the screw member 4 is called a tapping screw or the like and is screwed without a screw groove, the screw member 4 advances while being screwed into the inner periphery of the insertion hole 21 of the movable member 14. Due to this reaction force, the movable side member 14 moves toward the fixed side member 11 while increasing the outer diameter, and the engagement protrusion 18 is securely engaged with the inner surface of the wall insertion hole 7.

That is, when the screw member 4 enters the movable side member 14, the movable leg 17 which has been joined by the engaging recess 20 and the engaging portion 21 is separated, and the movable leg 17 is spread in the radial direction to move the movable leg 17 to the movable side. The outer diameter of the member 14 is made larger than the wall insertion hole 7, and the screw groove of the screw member 4 bites into the inner periphery of the synthetic resin insertion hole 21, cuts the screw groove, and is screwed together. An engaging projection 18 provided on the outer periphery is engaged so as to pierce the inner periphery of the wall insertion hole 7, and the plug member 1 connects the screw member 4 to the wall member 2.
And hold it. In this case, since the plug member 1 is configured by connecting the fixed member 11 and the movable member 14 that are integral with the flange portion 5 by the movable piece 13, the movable member 14 is fixed to the fixed member 11. When the screw member 4 is screwed from the member 11 to the moving-side member 14, the screw member 4 moves toward the fixed-side member 11 due to a reaction force that advances, and the engagement protrusion 18 is firmly engaged with the wall member 2.

The movable piece 13 is formed by forming a pair of opposed window holes 15 in the insertion member 10 so that the window hole 1
Since the portions other than 5 are formed on the movable piece 13, the manufacturing is extremely easy. Further, since the movable piece 13 bends and deforms in the radial direction with respect to the axial direction, the strength at the time of deformation and the strength after deformation are increased. The connection strength between the fixed-side member 11 and the movable-side member 14 is also ensured, and the contradictory problems of the movement of the movable-side member 14 and the prevention of the detachment of the movable-side member 14 are rationally solved. In addition,
In this case, the moving amount of the moving side member 14 is the same as the size (length) of the window hole 15 for forming the movable piece 13, so that the window hole 15 is necessary for the engagement projection 18 to engage. It is preferable that a large amount of movement be ensured.

Since the movable piece 13 is formed between the fixed-side member 11 and the movable-side member 14, the movable piece 13 is located between the front-side hard wall component 23 and the back-side hard wall component 24 of the wall member 2. Even when the thickness is different, the moving amount of the moving side member 14 is absorbed to cope with this, the plug member 1 is firmly held, and the work is facilitated. Thus, the wall member 2 of the embodiment has a three-layer structure including a soft wall component member 25 between the hard wall components 23 and 24 on the front side and the back side, while the plug member 1 is engaged. The projection 18 is formed to have a length protruding more deeply than the rear hard wall component 24, and the movable piece 13 is provided between the fixed member 11 and the movable member 14, so that the wall member 2 can be penetrated. When the screw member 4 is screwed together, the engaging protrusion 18 spreads in the radial direction and moves toward the front to engage with the rear surface of the rear hard wall component 24. Therefore, the engagement protrusion 18 is engaged with the rear hard wall component member 24, so that the mounting strength of the plug member 1 is improved.

[0020]

According to the present invention, the flange portion 5 contacting the wall member 2 is provided.
And a wall insertion hole 7 of the wall member 2
And an attaching member 10 having an engaging projection 18 protruding in a radial direction on an outer periphery inserted into the wall member 2 for attaching an attaching portion of the article 3 to be attached to the wall member 2 with a screw member 4. A fixed-side member 11 integral with the flange portion 5; and a movable-side member 14 having an engagement projection 18 that moves toward the flange portion 5 while increasing the outer diameter when the screw member 4 is screwed. The movable side member 14 has a pair of opposing movable legs 17 having free ends.
The movable leg 17 is attached to one of the opposing surfaces of each of the movable legs 17 as a plug member provided with the engaging recess 20 on the other and the engaging portion 21 on the other. The amount of change in the outer diameter between the time and the distance increases, and the engagement of the engagement projection 18 is strengthened. The present invention is directed to an insertion member having a flange portion abutting against a wall member and an engaging projection protruding in a radial direction on an outer periphery of the flange portion and connected to the flange portion and inserted into a wall insertion hole of the wall member. 10 for attaching the attachment portion of the article 3 to be attached to the wall member 2 with the screw member 4, wherein the insertion member 10 includes a fixed-side member 11 integrated with the flange portion 5, and the screw member 4.
Is formed by a movable side member 14 having an engagement projection 18 that moves toward the flange portion 5 while increasing the outer diameter when screwed into the fixed side member 11 and the movable side member 14.
Since the plug members are connected to each other via a pair of opposing movable pieces 13 formed so as to be freely deformable by a pair of opposing window holes 15, the production is extremely easy, the mold is simplified, and the cost is reduced. make low. Although the plug member 1 is described as having a tubular shape for ease of explanation, the present invention is not limited to this.
However, the base of the movable leg 17 may be connected by the movable base 16 and the movable base 16 may be recognized as a connection of the movable leg 17. Although the insertion member 10 is configured by the side member 11 and the movable side member 14, the configuration recognition in which the movable base portion 16 of the movable leg portion 17 is formed integrally with the fixed side member 11 by the movable piece 13. May be.

[Brief description of the drawings]

FIG. 1 is a side view.

FIG. 2 is a plan view.

FIG. 3 is a front view.

FIG. 4 is a cross-sectional view of a moving-side base cylinder portion.

FIG. 5 is a sectional view of a wall.

FIG. 6 is a view showing a state where the apparatus is inserted into a wall.

FIG. 7 is a diagram showing a state in which the diameter is increased and moved.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Plug member, 2 ... Wall member, 3 ... Article, 4 ... Screw member, 5 ... Flange part, 6 ... Protrusion, 7 ... Wall insertion hole, 10 ...
Insertion member, 11: fixed side member, 13: movable piece, 14: movable side member, 15: window hole, 16: movable side base cylinder portion, 17: movable leg portion, 18: engaging projection, 19: vertical groove, Reference numeral 20: engagement concave portion, 21: engagement portion, 22: narrow portion, 23, 24: hard wall component, 25: soft wall component.

Claims (2)

[Claims] An insert having a flange portion in contact with a wall member and an engaging projection radially protruding from an outer periphery of the flange portion and being inserted into the wall insertion hole of the wall member. The insertion member 10 comprises a fixed side member 11 integrated with the flange portion 5, and a fixing member 11, which is attached to the wall member 2. Is screwed into the engagement projection 18 which moves toward the flange portion 5 while increasing the outer diameter.
The movable side member 14 has a pair of opposing movable legs 17 each having a free end, and is engaged with one of the opposing surfaces of the movable legs 17. A plug member provided with a concave portion 20 and an engaging portion 21 on the other side. 2. An insertion having a flange portion abutting on the wall member and an engagement projection protruding in a radial direction on an outer periphery which is connected to the flange portion and inserted into the wall insertion hole of the wall member. The insertion member 10 comprises a fixed side member 11 integrated with the flange portion 5, and a fixing member 11, which is attached to the wall member 2. Are screwed into each other to increase the outer diameter and move to the flange portion 5 side.
The fixed-side member 11 and the movable-side member 14 have a pair of opposed window holes 1.
A pair of opposing movable pieces 13 formed so as to be freely deformable by 5
Plug members connected to one another via