JP7269101B2 - hole plug - Google Patents

Description

TECHNICAL FIELD The present invention relates to a hole plug, and more particularly to a hole plug in which a plurality of hole plug bodies configured to be adjacent to each other so as to be able to block a plurality of screw holes formed adjacent to each other in a mating member are connected.

2. Description of the Related Art Conventionally, an automobile engine is provided with a plurality (eg, two) of metal (eg, iron) engine mount brackets (hereinafter simply referred to as “brackets”) having screw holes. A plurality of (for example, two) screw holes are formed in the bracket so as to be adjacent to each other, and hooks can be screwed into the screw holes. Therefore, for example, during maintenance such as engine overhaul, a hook can be screwed into the screw hole of the bracket, and the engine can be lifted by a lifting device (for example, a crane) through the screwed hook. Therefore, the engine can be easily removed from the vehicle body.

For example, Patent Document 1 is known as prior art document information related to the invention of this application.
Japanese Patent Application Laid-Open No. 2006-151110

However, in the conventional technology described above, when a hook is screwed into the screw hole of the bracket, the screwed hook may rust the inner surface of the screw hole. Therefore, it was necessary to apply a rust inhibitor to this bracket. Also, in order to hide the rust without applying a rust preventive agent, for example, plugging the screw holes of the bracket with hole plugs has been considered. However, according to this idea, the hole plug that closes the screw hole of the bracket has a high retention force that prevents it from falling out of the screw hole due to vibrations caused by normal driving, and a maintenance plug that can be easily removed from the screw hole of the bracket during maintenance. power was sought.

An object of the present invention is to solve such problems, and its object is to provide a hole plug that can be easily removed from the screw hole during maintenance while securing a high holding force that prevents the hole plug from falling out of the screw hole during normal operation. It is to be.

According to one feature of the present disclosure, a hole plug in which a plurality of hole plug bodies configured to be adjacent to each other so as to be able to block a plurality of screw holes formed adjacent to each other in a mating member are connected, The plurality of hole plug bodies are composed of a first hole plug body and one or more second hole plug bodies adjacent to the first hole plug body. Each of the first hole plug body and the second hole plug body includes a lid portion capable of closing the screw hole, and a support portion protruding from the inner surface of the lid portion and capable of being inserted into the screw hole. Each lid portion of the second hole plug body is connected to the lid portion of the first hole plug body via a bent portion. The first strut portion of the first hole plug body is configured such that when the first strut portion itself is inserted into the screw hole, the first strut portion itself is attached to the screw hole, and is further attached to the screw hole. Further, when the first strut portion itself is rotated with respect to the screw hole, the first strut portion itself is removed from the screw hole. The second strut portion of the second hole plug body is configured such that the second strut portion itself is attached to the screw hole when the second strut portion itself is inserted into the screw hole. The first holding force acting on the first support section attached to the screw hole is set high so that the first support section is damaged when the first support section is pulled out from the screw hole. The second holding force acting on the second support section attached to the screw hole is set low so that the second support section will not be damaged even if the second support section is pulled out from the screw hole. The relationship of first holding force>second holding force is established.

Therefore, in the hole plug, a high holding force that does not come off from one of the screw holes due to vibrations caused by the running of the vehicle during normal times except during maintenance is applied to the first holding force (the first post attached to one of the screw holes). It can be ensured by the holding force). Further, by rotating the first column attached to one of the screw holes with respect to the one of the screw holes, the first column of support can be removed from the one of the screw holes. Further, when the second support section is pulled out from the other screw hole, the second support section is not damaged. Therefore, in the hole plug, it is possible to secure the maintenance force that allows the hole plug to be easily removed from the plurality of screw holes of the mating member during maintenance.

According to another feature of the present disclosure, the first post portion is formed with a first engagement piece having an engagement surface that is engageable with the thread of the screw hole. A second engaging piece having an engaging surface that can be engaged with the screw thread of the screw hole is formed on the second post. The relationship of first holding force>second holding force is defined by the first angle, which is the angle of the engaging surface of the first engaging piece with respect to the axial direction of the first support, and the second engagement with respect to the axial direction of the second support. The second angle, which is the angle of the engaging surface of the mating piece, is established by at least the relationship of the first angle>the second angle.

Therefore, the relationship of the first holding force>the second holding force can be easily set by the relationship between the first angle and the second angle.

Also according to other features of the present disclosure, the bending portion is a hinge.

Therefore, the bending portion can be easily provided.

According to another feature of the present disclosure, each post of the plurality of hole plugs has an abutment piece that can be elastically deformed by coming into contact with a mating member with the engagement surface engaged with the thread. formed.

Therefore, for example, when the first post is attached to one of the screw holes, the abutting piece in contact with the mating member is in a flexed state. is in close contact. Therefore, it is possible to increase the degree of closure of one of the screw holes by the cover portion of the first hole plug body. This also applies to the cover portion of the second hole plug body.

According to another feature of the present disclosure, in a state where the first strut portion and the second strut portion are attached to the screw holes, the distance from the cover portion of the first hole plug body to the engaging surface of the first engaging piece is increased. and a first length, which is the length in the axial direction of the first strut portion of the second hole plug body, and the length in the axial direction of the second strut portion, from the cover portion of the second hole plug body to the engaging surface of the second engaging piece. In the second length, the relationship of first length>second length is established.

Therefore, the second holding force can be suppressed. Therefore, when removing the hole plugs attached to the plurality of screw holes of the mating member, it is easy to remove the second hole plug body.

Also, according to another feature of the present disclosure, the first engaging pieces are formed in opposing pairs. The second engaging piece is formed so as to be positioned on a straight line connecting the pair of first engaging pieces. The second engaging piece is formed on the side of the second post portion farther from the first engaging piece.

Therefore, it is easier to remove the second hole plug body than in the case where the second engaging piece is formed closer to the pair of first engaging pieces.

Also, according to another feature of the present disclosure, each lid portion of the plurality of second hole plug bodies is formed with a handle portion that protrudes toward the opposite side of the bent portion.

Therefore, the second hole plug body can be easily removed by operating the handle.

It is a perspective view of a bracket according to the embodiment. 1 is a perspective view of a hole plug according to an embodiment; FIG. It is the perspective view which looked at FIG. 2 from the outer surface side. FIG. 3 is a plan view of FIG. 2; FIG. 3 is a side view of FIG. 2; FIG. 3 is an internal view of FIG. 2; It is a perspective view which shows the state which attached the hole plug to the bracket. FIG. 8 is a longitudinal sectional view of FIG. 7; It is a longitudinal cross-sectional view explaining the procedure of removing the hole plug attached to the bracket. FIG. 10 is a vertical cross-sectional view for explaining the procedure following FIG. 9; FIG. 11 is a vertical cross-sectional view for explaining the next procedure of FIG. 10;

Embodiments for carrying out the present invention will be described below with reference to FIGS. 1 to 11. FIG. First, the bracket 1 and the hole plug 2 according to the embodiment will be individually described. First, the bracket 1 will be described (see FIG. 1). This bracket 1 is a part of a metal engine mount bracket provided so as to face an automobile engine (not shown), which is an example of a mating member. Therefore, the bracket 1 is formed with a plurality of (for example, two) screw holes 1a adjacent to each other.

A hook (not shown) can be screwed into the screw hole 1a. Therefore, for example, during maintenance such as overhauling the engine, a hook can be screwed into the screw hole 1a of the bracket 1, and the engine can be lifted by a lifting device (for example, a crane) through the screwed hook. . In this way, the engine can be easily removed from the vehicle body (not shown).

Next, the hole plug 2 will be described (see FIGS. 2-6). The hole plug 2 is composed of a plurality of (for example, two) adjacent hole plug bodies 3 and 4 (first hole plug body 3 and second hole plug body 4). The first hole plug body 3 and the second hole plug body 4 will be individually described below.

First, the first hole plug body 3 will be described. The first hole plug body 3 is composed of a first lid portion 10 and a first support portion 12 . The first lid portion 10 has an outer diameter larger than the outer diameter of one of the screw holes 1a of the bracket 1, and is a thin plate-like lid member capable of closing the one of the screw holes 1a. The four sides of the edge of the first lid portion 10 are a linear first side 10a, a linear second side 10b perpendicular to the first side 10a, and a linear second side 10b perpendicular to the second side 10b. It is composed of a linear third side 10c and an arc-shaped fourth side 10d.

On the other hand, the first strut portion 12 is formed to protrude from the inner surface of the first lid portion 10 so as to be insertable into the screw hole 1a of the bracket 1 . A pair of elastically deformable first engagement pieces 14 are formed on the outer surface of the first support section 12 so as to face each other. A tip claw 14a and a base end claw 14c are formed on the pair of first engaging pieces 14, respectively. Each tip claw 14a is formed with an engaging surface 14b that can be engaged with the inclined surface 1c of the screw thread 1b of the screw hole 1a of the bracket 1. As shown in FIG. Each base end claw 14c is formed with an engaging surface 14d that can be engaged with the inclined surface 1c of the screw thread 1b of the screw hole 1a of the bracket 1. As shown in FIG.

Further, the pair of first engaging pieces 14 are arranged so that the pair of first engaging pieces 14 are separated from the first lid portion 10 in a state in which the first strut portion 12 is attached to the screw hole 1a of the bracket 1 as will be described later. The length in the axial direction of the first axis A1 of the first strut portion 12 to the engaging surface 14b of the tip claw 14a is formed to be the first length L1 (see FIG. 8).

As will be described later, the tip claw 14a has a first axis A1 extending axially between the engagement surface 14b and the first support 12 when the first support 12 is attached to the screw hole 1a of the bracket 1. is formed to be large (for example, approximately 60 degrees) (see FIG. 8). This also applies to the base end claw 14c. A lightening 16 is formed in the first strut portion 12 . Between the inner surface of the first lid portion 10 and the base end of the first support portion 12, an elastically deformable disc-shaped first contact piece 18 is formed. The first hole plug body 3 is constructed in this manner.

Next, the second hole plug body 4 will be explained. The second hole plug body 4 is composed of a second lid portion 20 and a second support portion 22 . The second lid portion 20 has an outer diameter larger than the outer diameter of the other screw hole 1a of the bracket 1, and is a thin plate-like lid member capable of closing the other screw hole 1a. The four sides of the edge of the second lid portion 20 are a linear first side 20a, a linear second side 20b perpendicular to the first side 20a, and a linear second side 20b perpendicular to the second side 20b. It is composed of a linear third side 20c and an arc-shaped fourth side 20d. A fourth side 20d of the second lid portion 20 is formed with a handle portion 21 that protrudes toward the opposite side (outward) of the hinge 30, which is an example of a bent portion.

On the other hand, the second strut portion 22 is formed so as to protrude from the inner surface of the second lid portion 20 so as to be insertable into the screw hole 1a of the bracket 1 . A second engagement piece 24 is formed on the outer surface of the second strut portion 22 . The second engaging piece 24 is formed so as to be positioned on the straight line C connecting the pair of first engaging pieces 14 . In addition, the second engaging piece 24 is formed on the outer surface of the second strut portion 22 on the side farther from the pair of first engaging pieces 14 (not on the second side 20b side, but on the fourth side 20d side). It is The second engaging piece 24 is formed with an engaging surface 24b that can be engaged with the inclined surface 1c of the screw thread 1b of the screw hole 1a of the bracket 1. As shown in FIG.

Further, the second engaging piece 24 extends from the second lid portion 20 to the engaging surface 24b of the second engaging piece 24 when the second support portion 22 is attached to the screw hole 1a of the bracket 1, as will be described later. The length in the axial direction of the second axis A2 of the second strut portion 22 up to the second support portion 22 is formed to be the second length L2. A relationship of first length L1>second length L2 is established.

The second engaging piece 24 extends in the axial direction between the engaging surface 24b and the second supporting column portion 22 when the second supporting column portion 22 is attached to the screw hole 1a of the bracket 1, as will be described later. A second angle R2 formed by the two axes A2 is set to be small (for example, approximately 30 degrees). In addition, a lightening 26 that is largely hollowed out is formed in the second strut portion 22 . Thereby, the second strut portion 22 can be bent. Between the inner surface of the second lid portion 20 and the base end of the second support portion 22, an elastically deformable disk-shaped second contact piece 28 is formed. The second hole plug body 4 is constructed in this manner.

The second side 10b of the first lid portion 10 of the first hole plug body 3 and the second side 20b of the second lid portion 20 of the second hole plug body 4, which are configured in this manner, are aligned with the straight line C described above. It is connected via a hinge 30 whose axial direction is the direction perpendicular to it. The first hole plug body 3 and the second hole plug body 4 are integrally molded from synthetic resin having rigidity. The hole plug 2 is configured in this way.

Next, the operation of the hole plug 2 described above (procedure for attaching the hole plug 2 to both screw holes 1a of the bracket 1 and procedure for removing the hole plug 2 attached to both screw holes 1a of the bracket 1) will be described.

First, the procedure for attaching the hole plugs 2 to the screw holes 1a of the bracket 1 will be described (see FIGS. 7 to 11). First, with the second hole plug body 4 bent with respect to the first hole plug body 3 with the hinge 30 as a base point, the work of inserting the first strut portion 12 into one of the screw holes 1a of the bracket 1 is performed. Then, the pair of first engaging pieces 14 are pressed against the screw thread 1b of one of the screw holes 1a and bent. Further, the inserting operation is performed until the first contact piece 18 abuts against the bracket 1 and bends (until the inserting operation is restricted).

Then, both engaging surfaces 14b and 14d of the pair of first engaging pieces 14 in this bent state engage with the inclined surface 1c of the screw thread 1b of one of the screw holes 1a of the bracket 1. As shown in FIG. Therefore, the first strut portion 12 can be attached to one of the screw holes 1 a of the bracket 1 in a state of both engagement by the pair of first engaging pieces 14 . Therefore, the screw hole 1 a on one side of the bracket 1 can be closed by the first lid portion 10 . At this time, since the first contact piece 18 that is in contact with the bracket 1 is bent, the bent first contact piece 18 and the bracket 1 are brought into close contact with each other. Therefore, it is possible to increase the degree of closure of one screw hole 1a by the first lid portion 10 described above.

At this time, the first angle R1 formed by the engaging surface 14b of the tip claw 14a and the first axis A1 extending in the axial direction of the first strut portion 12 is large (for example, about 60 degrees) (see FIG. 8). In this way, the first angle R1 in the state where the first strut part 12 is attached is large, and furthermore, as described above, since this attachment is in a state of being both hooked, the attached first support part 12 A holding force (hereinafter referred to as a "first holding force") acting on the strut portion 12 is high. Therefore, when the attached first strut portion 12 is pulled out from one of the screw holes 1a, the pair of first engagement pieces 14 of the pulled out first strut portion 12 is damaged. As is clear from this, the first holding force is set high.

It should be noted that when the first strut portion 12 is attached to the screw hole 1a of the bracket 1 as described above, the pair of first engaging pieces 14 of the attached first strut portion 12 are not aligned with the screw hole 1a of the bracket 1. It looks like a screw.

Next, while rotating the second hole plug body 4 with the hinge 30 as a base point (while unbending), the work of inserting the second strut portion 22 into the other screw hole 1a of the bracket 1 is performed. Then, the second engaging piece 24 is pressed against the screw thread 1b of the other screw hole 1a, and the second supporting column portion 22 is bent. Further, the inserting operation is performed until the second contact piece 28 abuts against the bracket 1 and bends (until the inserting operation is restricted).

Then, the engaging surface 24b of the second engaging piece 24 engages the inclined surface 1c of the thread 1b of the other screw hole 1a of the bracket 1. As shown in FIG. Therefore, the second strut portion 22 can be attached to the other screw hole 1 a of the bracket 1 in a state of being unilaterally supported by the second engagement piece 24 . Therefore, the other screw hole 1 a of the bracket 1 can be closed by the second lid portion 20 . At this time, since the second contact piece 28 that has come into contact with the bracket 1 is in a bent state, the bent second contact piece 28 and the bracket 1 are brought into close contact with each other. Therefore, it is possible to increase the degree of closure of the other screw hole 1a by the second lid portion 20 described above.

At this time, the second angle R2 formed by the engaging surface 24b of the second engaging piece 24 and the second axis A2 extending in the axial direction of the second strut portion 22 becomes small (for example, about 30 degrees). (see Figure 8). That is, a relationship of first angle R1>second angle R2 is established. In this way, the second angle R2 in the state where the second strut part 22 is attached is small. A holding force (hereinafter referred to as “second holding force”) acting on the strut portion 22 is low.

Therefore, even if the attached second strut portion 22 is pulled out from the other screw hole 1a, the second engaging piece 24 of the pulled out second strut portion 22 will not be damaged. As is clear from this, the second holding force is set low. That is, the first holding force is set higher than the second holding force. The magnitude of the first holding force and the second holding force is set according to the relationship of first angle R1>second angle R2, as described above. In this manner, the hole plug 2 can be attached so as to block both screw holes 1a of the bracket 1 (see FIGS. 7 and 8).

Next, a procedure for removing the hole plugs 2 attached to both screw holes 1a of the bracket 1 will be described. First, the handle portion 21 is manipulated so that the second hole plug body 4 is bent with respect to the first hole plug body 3 with the hinge 30 as a base point, and the second strut portion 22 is pulled out from the other screw hole 1a of the bracket 1. Extraction work is performed (see FIG. 9). Then, as described above, since the second holding force acting on the second strut portion 22 is set small, the second strut portion 22 can be pulled out without damaging the second engaging piece 24 .

Next, while the second support 22 is pulled out, the first support 12 is rotated with respect to the screw hole 1a (see FIG. 10). Then, as described above, the pair of first engagement pieces 14 of the first support 12 are adapted to screw into the screw hole 1a of the bracket 1, so that the screw thread 1b of the screw hole 1a is formed. Both the engaging surfaces 14b and 14d of the pair of first engaging pieces 14 spirally move along the inclined surface 1c. Therefore, since the screw is loosened, the first support 12 can be removed from the screw hole 1a without damaging the pair of first engaging pieces 14 (see FIG. 11). In this way, the hole plugs 2 attached to both screw holes 1a of the bracket 1 can be removed.

As described above, when the hole plug 2 is removed, the pair of first engagement pieces 14 of the first strut portion 12 of the first hole plug body 3 and the pair of first engagement pieces 14 of the second strut portion 22 of the second hole plug body 4 are separated. Neither of the two engaging pieces 24 are damaged. Therefore, the hole plug 2 that has been removed can be used to be attached to both screw holes 1a of the bracket 1 again. That is, the hole plug 2 can be reused without being thrown away.

The hole plug 2 according to the embodiment of the invention is constructed as described above. According to this configuration, the hole plug 2 is composed of the first hole plug body 3 and the second hole plug body 4 . The first hole plug body 3 is composed of a first lid portion 10 and a first support portion 12 . Also, the second hole plug body 4 is composed of a second lid portion 20 and a second support portion 22 . The first strut portion 12 of the first hole plug body 3 is configured so that when the first strut portion 12 itself is inserted into one screw hole 1a of the bracket 1, the first strut portion 12 itself is attached to one screw hole 1a. is configured to Therefore, the screw hole 1 a on one side of the bracket 1 can be closed by the first lid portion 10 of the first hole plug body 3 . Further, when the first strut portion 12 attached to one of the screw holes 1a is rotated with respect to one of the screw holes 1a, the first strut portion 12 of the first hole plug body 3 is rotated. It is configured such that it can be removed from one of the screw holes 1a. On the other hand, the second strut portion 22 of the second hole plug body 4 is arranged so that when the second strut portion 22 itself is inserted into the other screw hole 1a, the second strut portion 22 itself is attached to the other screw hole 1a. It is configured. Therefore, the other screw hole 1 a of the bracket 1 can be closed by the second lid portion 20 of the second hole plug body 4 . The first holding force acting on the first support section 12 attached to one of the screw holes 1a is so high that the first support section 12 is damaged when the first support section 12 is pulled out from one of the screw holes 1a. is set. In addition, the second holding force acting on the second support section 22 attached to the other screw hole 1a prevents the second support section 22 from being damaged when the second support section 22 is pulled out from the other screw hole 1a. is set as low as The relationship of the first holding force > the second holding force is established.

Therefore, in the hole plug 2, the first holding force (the first post attached to the one screw hole 1a) is a high holding force that prevents the hole plug 2 from falling off from the one screw hole 1a due to vibrations caused by the running of the automobile in normal times except during maintenance. retention force acting on the portion 12). Further, by rotating the first support 12 attached to one of the screw holes 1a with respect to the one of the screw holes 1a, the first support 12 can be removed from the one of the screw holes 1a. In addition, when the second strut portion 22 is pulled out from the other screw hole 1a, the second strut portion 22 is not damaged. Therefore, in the hole plug 2, it is possible to secure a maintenance force that allows the hole plug 2 to be easily removed from both the screw holes 1a of the bracket 1 during maintenance.

Further, according to this configuration, the relationship of the first holding force > the second holding force is the angle between the engaging surfaces 14b and 14d of the pair of first engaging pieces 14 with respect to the axial direction of the first support 12. A relationship of the first angle>the second angle is established between the first angle R1 and the second angle R2, which is the angle of the engaging surface 24b of the second engaging piece 24 with respect to the axial direction of the second strut portion 22. . Therefore, the relationship of the first holding force>the second holding force can be easily set by the relationship between the first angle and the second angle.

Moreover, according to this configuration, the bent portion is the hinge 30 . Therefore, this bending portion can be easily provided.

In addition, according to this configuration, an elastically deformable disk-shaped first contact piece 18 is formed between the inner surface of the first lid portion 10 and the base end of the first strut portion 12 . Therefore, when the first support section 12 is attached to one of the screw holes 1a, the first contact piece 18 in contact with the bracket 1 is in a bent state. The piece 18 and the bracket 1 are in close contact. Therefore, the degree of closure of one screw hole 1a by the first lid portion 10 can be increased. This also applies to the second lid portion 20 .

Further, according to this configuration, the pair of first engaging pieces 14 are arranged to extend from the first lid portion 10 to the pair of first engaging pieces 14 in a state where the first strut portion 12 is attached to the screw hole 1 a of the bracket 1 . The length in the axial direction of the first axis A1 of the first strut portion 12 to the engaging surface 14b of the tip claw 14a is formed to be the first length L1. Further, the second engaging piece 24 is a second post extending from the second lid portion 20 to the engaging surface 24b of the second engaging piece 24 in a state where the second supporting post portion 22 is attached to the screw hole 1a of the bracket 1. The length of the portion 22 in the axial direction of the second axis A2 is formed to be the second length L2. A relationship of first length L1>second length L2 is established. Therefore, the second holding force can be suppressed. Therefore, when removing the hole plugs 2 attached to both screw holes 1a of the bracket 1, the second hole plug body 4 can be easily removed.

Moreover, according to this configuration, the second engaging piece 24 is formed so as to be positioned on the straight line C connecting the pair of first engaging pieces 14 . In addition, the second engaging piece 24 is formed on the outer surface of the second strut portion 22 on the side farther from the pair of first engaging pieces 14 (not on the second side 20b side, but on the fourth side 20d side). It is Therefore, it is easier to remove the second hole plug body 4 compared to the case where the second engaging piece 24 is formed closer to the pair of first engaging pieces 14 (on the side of the second side 20b).

Further, according to this configuration, the fourth side 20d of the second lid portion 20 is formed with a handle portion 21 that protrudes toward the opposite side (outward) of the hinge 30, which is an example of the bent portion. . Therefore, by operating the handle portion 21, the second hole plug body 4 can be easily removed.

The contents described above are merely related to one embodiment of the present invention, and do not mean that the present invention is limited to the above contents.

In the embodiment, the procedure of attaching the second support section 22 to the other screw hole 1a of the bracket 1 after the first support section 12 is attached to one of the screw holes 1a of the bracket 1 has been described. However, it is not limited to this, and this procedure may be performed at the same time or in reverse.

Moreover, in the embodiment, a single second hole plug body 4 is provided. However, the present invention is not limited to this, and the number of second hole plug bodies 4 may be plural (for example, two, three, etc.).

Further, in the embodiment, in the description of the procedure for attaching the hole plug 2 to both the screw holes 1a of the bracket 1, after performing the work of inserting the first strut portion 12 into one of the screw holes 1a of the bracket 1, the bracket 1 is The form of performing the work of inserting the second support 22 into the other screw hole 1a has been described. However, the present invention is not limited to this, and in the description of this mounting procedure, at the same time as inserting the first post 12 into one of the screw holes 1a of the bracket 1, the other screw hole 1a of the bracket 1 A form in which the work of inserting the second strut portion 22 into is also possible.

1 bracket (mating member)
1a screw hole 2 hole plug 3 first hole plug body 4 second hole plug body 10 first cover (cover)
12 first strut part (strut part)
20 second lid (lid)
22 second strut part (strut part)
30 hinge (bending part)

Claims (7)

A hole plug in which a plurality of hole plug bodies configured to be adjacent to each other so as to be able to block a plurality of screw holes formed adjacent to each other in a mating member are connected,
The plurality of hole plug bodies are composed of a first hole plug body and a single or a plurality of second hole plug bodies adjacent to the first hole plug body,
The first hole plug body and the second hole plug body are composed of a lid portion capable of closing the screw hole, and a post portion protruding from the inner surface of the lid portion and capable of being inserted into the screw hole. Each is composed of
Each lid portion of the second hole plug body is connected to the lid portion of the first hole plug body via a bent portion,
The first strut portion of the first hole plug body is configured such that when the first strut portion itself is inserted into the screw hole, the first strut portion itself is attached to the screw hole; When the first strut portion itself attached to the screw hole is rotated with respect to the screw hole, the first strut portion itself is removed from the screw hole,
The second strut portion of the second hole plug body is configured such that the second strut portion itself is attached to the screw hole when the second strut portion itself is inserted into the screw hole,
A first holding force acting on the first support section attached to the screw hole is set high so that the first support section is damaged when the first support section is pulled out from the screw hole,
A second holding force acting on the second support column attached to the screw hole is set low so as not to damage the second support column even when the second support column is pulled out from the screw hole. and
A hole plug satisfying the relationship of the first holding force>the second holding force. The hole plug according to claim 1,
A first engaging piece having an engaging surface that can be engaged with the screw thread of the screw hole is formed on the first post,
A second engaging piece having an engaging surface that can be engaged with the thread of the screw hole is formed on the second supporting column,
The first holding force > the second holding force is defined by the first angle, which is the angle of the engaging surface of the first engaging piece with respect to the axial direction of the first support section, and the axis of the second support section. and a second angle which is the angle of the engaging surface of the second engaging piece with respect to the direction, and at least the relationship of the first angle>the second angle holds. The hole plug according to any one of claims 1 and 2,
The hole plug, wherein the bending portion is a hinge. The hole plug according to any one of claim 2 and claim 3 quoting claim 2 ,
A hole plug in which each of the support portions of the plurality of hole plug bodies is formed with an abutting piece that is elastically deformable by coming into contact with the mating member while the engaging surface is engaged with the screw thread. . The hole plug according to claim 2 and any one of claims 3 to 4 quoting claim 2 ,
In a state where the first support section and the second support section are attached to the screw holes,
a first length, which is the length in the axial direction of the first strut portion from the lid portion of the first hole plug body to the engaging surface of the first engaging piece;
a second length, which is the length in the axial direction of the second strut portion from the lid portion of the second hole plug body to the engaging surface of the second engaging piece;
A hole plug satisfying the relationship of the first length>the second length. The hole plug according to claim 2 and any one of claims 3 to 5 quoting claim 2 ,
The first engaging pieces are formed to form a pair facing each other,
The second engaging piece is formed so as to be positioned on a straight line connecting the pair of first engaging pieces,
The hole plug, wherein the second engaging piece is formed on the second post portion on a side farther from the first engaging piece. The hole plug according to any one of claims 1 to 6,
A hole plug in which a handle portion protruding toward the side opposite to the bent portion is formed on each cover portion of the plurality of second hole plug bodies.

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