JP2599029Y2 - Hole plug - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hole plug for closing a hole.

[0002]

2. Description of the Related Art As shown in FIG. 6, a linear guide 50 for guiding on a rail is used to smoothly move on an extended rail. In this linear guide 50,
Bolt holes 56 for fixing the mounted object 52 with mounting bolts 54 are formed at a plurality of locations.

By the way, depending on the size of the load 52,
Not all of the drilled bolt holes 56 are used. Therefore, the unused bolt holes 56 may be left without any attachment.

If the bolt hole 56 is left as it is in this state, dust such as metal powder and cutting powder invades and adheres to the bolt hole 56 and cannot be completely removed by washing. . Therefore, when the linear guide 50 moves on the rail, dust falling from the bolt holes 56 may adhere to the rail and hinder the movement of the linear guide 50.

Therefore, a bolt hole clip 60 as shown in FIG. 7 has been proposed (see Japanese Utility Model Publication No. 62-22660). The clip 60 includes a head 62 and a leg 64
have. The head portion 62 is formed in a disk shape, and is provided with an engagement groove 66 at the center of the upper surface for engaging a substantially cross-shaped tool such as a driver. The leg 64 extends vertically from the center of the lower surface of the head 62 and is formed in a vertically long rectangular plate shape having a required thickness. A pair of elastic engagement pieces 68 are formed on the legs 64. The elastic engagement piece 68 is
The four side surfaces 70 are paired so as to be back-to-back, and one pair is provided at each of the distal end portion of the leg portion 64 and the substantially central portion in the longitudinal direction.

When the clip 60 is inserted into the bolt hole 56, the elastic engaging piece 68 enters the bolt hole 56 while bending, and the base end 72 of the leg contacts the opening of the bolt hole 56. At this time, the engaging claw 74 provided at the tip of the elastic engaging piece 68 is engaged with the thread of the bolt hole 56 by the restoring force of the elastic engaging piece 68.

[0007]

However, since the engaging claw 74 is engaged with the screw thread and is fixed to the bolt hole 56, the clip 60 has a problem that the screw hole is not provided in the bolt hole 56. In this case, the engaging claw 74 merely comes into line contact with the side wall of the hole, and the force with which the clip 60 is held in the hole is reduced.

When inserting the clip 60 into the bolt hole 56, a driver is engaged with the engaging groove 66 to
The engagement pawl 74 must be fixed to the screw thread of the bolt hole 56 by rotating 0. Further, when the clip 60 is to be removed from the bolt hole 56, a screwdriver must be used in the same manner, and it takes time to attach and detach the clip 60 from the bolt hole 56.

The present invention has been made in view of the above-mentioned circumstances, and has as its object to obtain a hole plug which has a large force held in a hole and is easily detachable.

[0010]

According to the invention as set forth in claim 1,
Is a hole plug having a head portion that prevents the penetration adhesion of dust closes the opening in a state of being inserted into the hole, extending from said head, an insertion portion inserted into the hole, before
It is placed away from the head, from both sides of the insertion part
Heading toward the center, flipped and bent outward,
A flexible piece that extends to a position where the diameter of the flexible piece is increased.
A free end is continuously provided, and when inserted into the hole,
The flexible piece can be bent, and when inserted into the hole
It is characterized by comprising a contact surface which contacts the inner peripheral surface and the surface of the hole in the backward original force of the flexible piece. Claim 2
In the invention, it is erected in the center of the head, between the insertion part
It is characterized by having a mandrel positioned.

[0011]

[Action] In the invention of claim 1 is a hole plug having a head portion that prevents the penetration adhesion of dust closes the opening in a state of being inserted into the hole, the insertion portion Shi extending from the head
And is inserted into the hole . Also the head
The flexible pieces spaced apart from the
Going to the center, flipped and bent outward,
It protrudes to the position where the diameter increases. Free end of this flexible piece
Parts are connected by a contact surface, and this contact surface
Sandwiched when inserting able to deflect the flexible piece, in the state of being inserted into the hole to the inner peripheral surface and the surface contact hole in restoring the original strength of the flexible piece.

Thus, the contact surface is firmly held by the hole, and the performance of closing the hole is improved. Furthermore, since it is held in the hole by surface contact, it can be mounted in a hole without a thread. Also, insert with the contact surface
Just use a conventional tool,
There is no need to perform alignment.

[0013] In the invention according to claim 2, the mandrel is located on the head.
It stands upright at the center and is located between the insertion sections.
For this reason, the head standing upright in the center is
To remove the hole plug easily.
You. Therefore, attachment / detachment from the hole becomes easier than before, and workability is improved.

[0014]

1 to 3 show a hole plug 10 according to the present embodiment. In this hole plug 10,
A disk-shaped flange 12 is formed. An outer peripheral line of the flange 12 is provided with a tapered surface 12A. A cylindrical mandrel 14 is provided at the center of the flange 12.
Is erected. At a position symmetrical with respect to the mandrel 14, a pair of insertion portions 1 formed in a substantially quarter-arc shape is provided.
6 stands from the flange 12.

The outer diameter of the insertion portion 16 is substantially the same as the inner diameter of the hole 40 (see FIG. 5) to be inserted. Further, a tapered surface 16 </ b> A inclined toward the mandrel 14 is formed at the distal end of the insertion portion 16, and the tapered surface 16 </ b> A guides the insertion portion 16 to the hole 40. On both side surfaces between the middle and the distal end of the insertion portion 16, there are provided flexible pieces 18 which project toward the mandrel 14, are inverted and bent outward, and are formed substantially in a V-shape in plan view. Similar flexible pieces 18 are provided on both side surfaces of the other insertion portion 16. An abutment surface 20 is symmetrically supported about the mandrel 14 so as to connect the free ends of the flexible pieces 18.
The contact surface 20 is formed in a substantially quarter arc shape.
The outer surface of the abutting portion 20 projects outside the outer surface of the insertion portion 16. In addition, a mandrel 1 is provided at the tip of the contact portion 20.
A tapered surface 20A inclined toward 4 is formed.

The insertion portion 16, the flexible piece 18, and the contact portion 20 are formed of an elastic material, and force is applied to the outer surface of the contact portion 20 toward the mandrel 14 (in the directions of arrows A and B). Acts, the flexible pieces 18 are respectively inward (mandrel 14 side).
The contact portion 20 is formed so as to be bent inward (toward the mandrel 14).

Next, the operation of this embodiment will be described. FIG. 4 shows a linear guide 38 placed on an extended rail 36 as an example. This linear guide 3
8, holes 40 are provided at a plurality of locations (eight locations in this embodiment) for fixing a load.

As shown in FIG. 1, when the outer surface of the contact portion 20 is sandwiched toward the mandrel 14 (in the directions of arrows A and B),
The flexible piece 18 bends inward (the side of the mandrel 14), and the contact portion 20
Is deformed inward (toward the mandrel 14). When the hole plug 10 is inserted into the hole 40 in this state, the hole plug 10 penetrates into the hole 40 while being guided by the tapered surfaces 16A and 20A, and the restoring force of the flexible piece 18 acts on the contact portion 20. Is in contact with the hole surface 40A of the hole 40. next,
As shown in FIG. 5, the hole plug 10 is inserted into the hole 40 until the tapered surface 12A comes into contact with the cutout surface 40B of the hole 40. In this state, the outer surface of the insertion portion 16 is also in contact with the hole surface 40A.

Thus, the insertion portion 16 and the contact portion 20
The hole plug 10 is firmly held in the hole 40 and the performance of closing the hole 40 is improved. Further, since the hole plug 10 is held in the hole by surface contact, the hole plug 10 can be mounted in a hole having no thread.

When inserting the hole plug 10 into the hole 40, the contact portion 20 may be inserted from the outside with the flexible piece 18 bent and inserted into the hole 40. There is no need to use the above tool to perform alignment with the engagement groove. Further, the hole plug 10 can be removed from the hole 40 simply by pushing the mandrel 14 from below with a screwdriver or the like. Therefore, attachment / detachment of the hole plug 10 from the hole 40 becomes easier than before, and workability is improved.

[0021]

As described above, the hole plug according to the present invention is firmly held in the hole and can be easily attached and detached.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a hole plug according to an embodiment.

FIG. 2 is a perspective view showing a hole plug according to the embodiment.

FIG. 3 is a bottom view showing the hole plug according to the embodiment.

FIG. 4 is a perspective view showing a linear guide mounted on a rail.

FIG. 5 is a cross-sectional view showing a state where the hole plug according to the present embodiment is inserted into the hole.

FIG. 6 is a perspective view showing a state where a load is mounted on a linear guide on a rail.

FIG. 7 is a front view showing a half of a clip in cross section.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Hole plug 12 Flange (head) 16 Insertion part 20 Contact part (contact surface) 40 hole 40A hole surface

Claims (2)

(57) [Scope of request for utility model registration] 1. A hole plug having a head that blocks an opening and prevents invasion and adhesion of dust when inserted into a hole, wherein the insertion portion extends from the head and is inserted into the hole. When,
It is located away from the head, and may be
To the center, flipped and bent outward, the insertion part
A flexible piece extending to a position where the diameter is larger than the flexible piece;
The free end of the
Serial can deflect the flexible piece, holes in a state of being inserted into the hole, characterized in that it and a contact surface which contacts the inner peripheral surface and the surface of the hole in the backward original force of the flexible piece plug. 2. An insertion part, which is erected at the center of said head.
2. The method according to claim 1, further comprising:
The described hole plug.