JPH09184512A - Shaft tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To revolvably or rotatably assemble a first mounted object only by insertion into the shaft hole of the first mounted object and the mounting hole of a second mounted object. SOLUTION: This shaft tool is inserted into the circular shaft hole 100 of a first mounted object M and a mounting hole 200 equipped with the engagement recessed part 201 of a second mounted object S so that the first mounted object M is revolvably or rotatably assembled. This shaft tool is also equipped with an inserting part 20 having a plurality of elastic engagement pieces 22, 22... engaged with the engagement recessed part 201 of the mounting hole 200. Further, this shaft tool is equipped with a shaft head 10 positioned in the shaft hole 100 and positioning projected parts 23 arranged on the base of the elastic engagement pieces. The diameter z-3 of a virtual circular which is passed through the projected ends of the plurality of the positioning projected parts 23, is set larger than a diameter y in the mounting hole 200, and smaller than the diameter of a virtual circule passed through the inner end surfaces 201a of the respective engagement recessed parts 201, 201....

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a second mounting object which is inserted into a shaft hole provided in a first mounting object and a mounting hole provided in a second mounting object. The present invention relates to provision of a shaft tool that is engaged and fixed to a mounting hole of an object and that rotatably or rotatably assembles the first mounting object to the second mounting object.

[0002]

2. Description of the Related Art When a first mounting object is rotatably or rotatably assembled to a second mounting object, the first mounting object and the second mounting object communicate with each other in an assembled state. A shaft rod having a head is inserted from one of the holes into the communicating hole, and the shaft rod projecting from the other of the communicating holes is inserted. An E-ring, a nut, or the like is fastened to the distal end of the shaft rod so that the outer surface following the hole edges of the pair of holes that are communicated between the E-ring or the like and the head is sandwiched between the shaft rod. A method of fixing and assembling the first mounting object rotatably or rotatably with respect to the second mounting object around the shaft rod thus fixed is widely used.

[0003]

However, according to such a conventional method, it is necessary to fasten the E-ring or the like to the tip end portion of the shaft rod, and the fastening of the E-ring or the like is required. As a result, the first by the conventional method,
When assembling the second object to be mounted, it is necessary to secure a gap corresponding to the width dimension of the E-ring or the like around the hole from which the tip of the shaft rod is projected. It was

Therefore, according to such a conventional method, the hole through which the tip of the rod is projected is formed at a corner portion or the like of the object to be attached, where a side wall is close to the hole. If it is, the above-mentioned E
It could not be used because the ring or the like could not be fastened or it made such fastening difficult.

Therefore, an object of the present invention is to eliminate the disadvantages of the conventional technique.

Further, the second mounting can be performed simply by inserting it into the shaft hole provided in the first mounting object and the mounting hole provided in the second mounting object without requiring other parts. The first attachment object can be rotatably or rotatably assembled with respect to the object, and therefore, the attachment hole is such that the side wall or the like is close to the corner portion of the second attachment object, the vicinity of the attachment hole, or the like. An object of the present invention is to provide a shaft tool that can be easily and surely assembled even when the shaft tool is opened at a certain position.

[0007]

In order to achieve the above-mentioned object, in the invention according to claim 1, a shaft tool is provided with a circular shaft hole 100 provided through the first mounting object M, and a second shaft tool. , Which is a circular mounting hole 200 that is transparently provided in the mounting object S and that is provided with a plurality of engaging recesses 201, 201 ... With respect to the mounting hole 200 of the target object S, the first mounting target object M is inserted from the shaft hole 100 of the first mounting target object M into the mounting hole 200 of the second mounting target object S. Shaft hole 10
The first attachment target M is rotated with respect to the second attachment target S by contacting the zero edge and engaging the other end side with the attachment hole 200 of the second attachment target S. Alternatively, it is a rotatably assembled shaft tool having a plurality of engaging recesses 2 in the mounting hole 200 of the second mounting object S on the other end side.
01, 201 ...
A plurality of elastic engagement pieces 22, which are respectively engaged with the front end side of the
22 is provided in a protruding shape, and is provided continuously to one end portion of the first attachment object M that abuts on the edge of the shaft hole 100, and the first attachment object The shaft head 10 located in the shaft hole 100 of the object M is provided, and the positioning protrusion is provided on the protruding base of each of the elastic engaging pieces 22, 22 ... In the insertion portion 20 or below the protruding base. .., or each of the elastic engaging pieces 22, 22 ... Has an overhanging positioning protrusion 23 corresponding to the positioning protrusion 23, and the projection ends of the plurality of positioning protrusions 23. Diameter of an imaginary circle passing through z-3
Is larger than the diameter y in the mounting hole 200 of the second mounting object S, and the engaging recesses 201, 201.
The diameter is set to be smaller than the diameter of an imaginary circle y ′ passing through the inner side surface 201a.

[0008] According to the second aspect of the present invention, in the first aspect,
The described shaft tool further includes the shaft hole 100 of the first attachment object M.
Below the shaft head 10 located inside, the protrusion 13 that fits in the engagement recess 201 of the mounting hole 200 of the second mounting object S
It has a configuration including.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Typical embodiments of the present invention will be described below with reference to FIGS.

It should be noted that FIG. 1 facilitates understanding of the structure of the shaft member according to this embodiment and the first mounting object M and the second mounting object S assembled by the shaft device. , These are shown in a separated state.

2 and 4, the shaft hole 100 of the first mounting object M positioned so as to communicate with each other.
And a state in which the tip end side of the insertion portion 20 of the shaft tool is inserted into the mounting hole 200 of the second mounting object S from the shaft hole 100 side, the two mounting objects M and S are in a longitudinal sectional state. 5 and FIG. 7, one end of the shaft tool, that is, a diameter-expanded portion of the shaft head 10 to be described later is brought into contact with the edge of the shaft hole 100 of the first mounting object M. And the other end of the shaft tool in the mounting hole 200 of the second mounting object S,
That is, the elastic engagement piece 22 provided in the insertion portion 20
In order to make it easy to understand the state in which the both ends of the attachment M and S are assembled by engaging the front ends of the two, the attachments M and S are shown in a state of a longitudinal section.

Further, FIG. 3 shows the shaft in the state shown in FIG. 2, as viewed from the tip side of the insertion portion 20, and FIG. 6 shows the shaft in the state shown in FIG. Each is shown as viewed from the tip side of the insertion portion 20.

Further, FIG. 8 is a state in which the shaft is viewed from one side where the elastic engaging piece 22 is projected, and FIG.
Is a state of the shaft shown in FIG. 8 viewed from the right side, FIG. 12 is a state of viewed from the distal end side of the insertion part 20, and FIG. 13 is a state of viewed from the shaft head 10 side. Shown respectively.

Further, FIGS. 9 and 10 respectively show the shaft member in a state of a cross section.

First, in the shaft tool according to this embodiment, a circular shaft hole 100 is provided through the first attachment object M and a circular attachment hole is provided through the second attachment object S. The second mounting object S is provided with a plurality of engaging recesses 201, 201, which are provided so as to communicate with each other from the mounting hole 200 in the radial direction. It is inserted from the shaft hole 100 of the mounting object M into the mounting hole 200 of the second mounting object S so that one end abuts on the edge of the shaft hole 100 of the first mounting object M and the other end. A shaft tool that engages a side with a mounting hole 200 of a second mounting object S to rotatably or rotatably assemble the first mounting object M with respect to the second mounting object S. A plurality of engaging recesses 201 in the mounting hole 200 of the second mounting object S are provided on the other end side of the shaft tool. A plurality of elastic engaging pieces 22, 22, ..., which are introduced into the engaging concave portion 201 and are engaged with the engaging concave portion 201 at the tip end side, are provided with the inserting portion 20 having a protruding shape, and the first mounting Shaft hole 1 of object M
Is provided continuously at one end abutting against the 00 edge, and
The shaft head 10 is located in the shaft hole 100 of the first attachment object M.

Therefore, according to the shaft tool of this embodiment, the shaft hole 100 of the first mounting object M and the mounting hole 200 of the second mounting object S which are communicated with each other are
The insertion portion 20 is inserted from the side of the shaft hole 100 of the first attachment object M to attach the attachment hole 2 of the second attachment object S.
... by engaging the plurality of elastic engaging pieces 22, 22 ... With the plurality of engaging recesses 201, 201 ..., respectively, the second attaching object S can be attached and fixed with one touch, and Second mounting object S
With the shaft head 10 located in the shaft hole 100 of the first attachment object M in the shaft fixed to the center of the first attachment object M as the rotation or rotation center, the first attachment object M is attached to the second attachment object. It can be assembled so as to be rotatable or rotatable with respect to S.

As a result, according to the shaft tool of this embodiment, the mounting hole 200 has a corner portion or the like of the second mounting object S, and the side wall S ″ and the like are close to the mounting hole 200. Even if it is opened at a certain place, the above-mentioned assembly can be performed easily and surely without requiring other parts.

Further, the shaft has a plurality of elastic engaging pieces 22, 22 provided on the inserting portion 20 in a plurality of engaging concave portions 201, 201 ... In the attaching hole 200 of the second attaching object S, respectively. Since it is engaged and inserted into the mounting hole 200 and fixed, the mounting hole is rotated or rotated about the shaft head 10 as the center of rotation or rotation. It is possible to stably assemble the first attachment object M to the second attachment object S without rotating or rotating the shaft within 200.

Further, in the shaft tool according to this embodiment, the elastic engaging pieces 22, 22 in the inserting portion 20 are provided.
The protruding base portion of ... Is provided with a positioning protrusion 23 below the protruding base portion, or each of the elastic engaging pieces 22, 22 ...
Is provided with an overhanging positioning protrusion 23 corresponding to the positioning protrusion 23, and a diameter z-3 of an imaginary circle passing through the projecting ends of the plurality of positioning protrusions 23 ,. It is configured to be larger than the diameter y of the mounting object S in the mounting hole 200 and smaller than the diameter y ′ of an imaginary circle passing through the inner side surface 201a of each of the engaging recesses 201, 201.

Therefore, according to the shaft tool of this embodiment, the elastic engagement pieces 22, 22 ... In the insertion portion 20 inserted from the shaft hole 100 of the first attachment object M are The inserting portion 20 can be inserted into the mounting hole 200 only in the direction in which the engaging recesses 201, 201 ... Of the mounting hole 200 are inserted, and the mounting hole 20 does not require special consideration.
It is possible to attach the shaft accurately to zero.

Further, in the shaft tool according to the above-described embodiment, the second mounting object S is further attached to the lower side of the shaft head 10 located in the shaft hole 100 of the first mounting object M. One of the best modes for carrying out the present invention is one having a configuration in which the protrusion 13 that fits in the engaging recess 201 of the mounting hole 200 is provided.

According to this structure, a plurality of engaging recesses 201, 2 in the mounting hole 200 of the second mounting object S are provided.
01 ... is engaged not only with the plurality of elastic engaging pieces 22, 22 provided on the insertion portion 20, but also the protrusion 13 is housed in the engaging recess 201 to attach the shaft tool. Since it can be inserted and fixed in the hole 200,
The first attachment object M can be assembled to the second attachment object S more stably.

Next, specific embodiments of the present invention shown in FIGS. 1 to 13 will be described in detail.

The shaft tool according to this embodiment is inserted through a shaft hole 100 formed through the first mounting object M and a mounting hole 200 formed through the second mounting object S. The first attachment object M is rotatably or rotatably assembled to the second attachment object S, and the attachment hole 200 of the second attachment object S in the inserted state is used. The insertion part 20 that is engaged and fixed with the insertion part 20
And a shaft head portion 10 which is provided at one end side of the first mounting object M and is located in the shaft hole 100 of the first attachment object M in the inserted state.

The shaft head 10 has a disk-shaped enlarged diameter portion 11 on the top end side, and an intermediate portion 12 between the lower end side opposite to the top end and the top end, and the intermediate portion 12
The outer peripheral surface of the shaft head 10 in the direction around the shaft center line is located on a virtual circle.

In the embodiment, such a shaft head 10
The diameter z-1 of the imaginary circle on which the outer peripheral surface of the intermediate portion 12 is located is configured to be slightly smaller than the diameter x of the shaft hole 100 provided through the first attachment target M. is there.

On the other hand, the insertion portion 20 is provided with a plate-like portion 21 provided in a protruding shape in a direction substantially orthogonal to the lower end surface of the shaft head portion 10, and on both surface sides of the plate-like portion 21, respectively. The plate-shaped portion 21 is provided with a pair of elastic engagement pieces 22 and 22 projecting toward the shaft head 10 side with the protruding tip side thereof as a base portion.

Each of the pair of elastic engagement pieces 22, 22 gradually extends from the base side toward the tip side.
It is provided in an outwardly spread shape so as to widen the distance from the first surface. On the outer side of the elastic engaging piece 22 on the tip side of the elastic engaging piece 22, a lower end surface of the shaft head 10 is provided with a slight gap from the tip edge 22b of the elastic engaging piece 22. Is provided with an engaging surface 22a facing each other.

In this embodiment, the dimension z-2 between the narrow end faces of the plate-like portion 21 of the insertion portion 20 where the elastic engagement piece 22 is not provided is the first dimension. The diameter is set to be slightly smaller than the diameter x of the shaft hole 100 provided through the attachment object M and the diameter y of the attachment hole 200 provided through the second attachment object S. The dimension between the outer surfaces of the elastic engaging pieces 22, 22 is such that the shaft hole 100 diameter x of the first attachment object M and the attachment hole of the second attachment object S on the base side of the elastic engagement piece 22. Two
The diameter is slightly smaller than the diameter y of 00, and is larger than the diameter x of the shaft hole 100 and the diameter y of the mounting hole 200 at the tip end side of the elastic engagement piece 22.

Further, on the outside of the projecting base of the pair of elastic engagement pieces 22 and 22 in the insertion part 20, virtual ends passing through the tips of the elastic engagement pieces 22 along the protruding direction of the insertion part 20 are provided. The positioning protrusion 23 is provided so as to be located on the straight line.

In this embodiment, the diameter z-3 of the imaginary circle passing through the projecting ends of the pair of positioning projections 23, 23 in the insertion part 20 is the axis of the first mounting object M. The diameter is smaller than the diameter x of the hole 100.

On the other hand, in this embodiment, the mounting holes 200 provided through the second mounting object S are arranged so that the mounting holes 20 are provided on both sides in the diametrical direction of the mounting holes 200.
It is provided with a pair of engagement recesses 201, 201 provided so as to communicate with the mounting hole 200 toward the outside of 0.

Further, in this embodiment, the pair of positioning protrusions 23, 23 in the insertion portion 20 are arranged.
The diameter z-3 of an imaginary circle passing through each of the projecting ends is larger than the diameter y of the mounting hole 200 of the second mounting object S, and the inner side surfaces 201a of the respective engaging recesses 201, 201 ...
It is configured to be smaller than the diameter y'of an imaginary circle passing through.

Since the shaft tool according to this embodiment has the structure described above, first of all, as shown in FIG. 2, the first mounting object M which is positioned so as to communicate with each other. With respect to the shaft hole 100 and the mounting hole 200 of the second mounting object S, the tip of the insertion portion 20 is inserted from the hole opening of the shaft hole 100 on the side not contacting the second mounting object S. Can be inserted from the side. Here, since the pair of elastic engagement pieces 22, 22 provided in the insertion portion 20 are configured such that the dimension between the outer surfaces of the tips thereof is larger than the diameter x of the shaft hole 100,
With the insertion, the outer surface is brought into contact with the edge of the shaft hole 100 and gradually bent inward.

Then, when the insertion portion 20 is further inserted, the tip of the insertion portion 20 inserted as described above is on the side of the second attachment object S which is in contact with the first attachment object M. Although it comes into contact with the edge of the mounting hole 200, the dimension z-3 between the projection ends of the pair of positioning projections 23, 23 provided on the tip side of the insertion portion 20 is larger than the diameter y of the mounting hole 200. Therefore, as shown in FIGS. 2 and 3, when the insertion portion 20 is inserted in a direction in which the positioning projection 23 does not enter the engagement recess 201, the positioning projection 23 is attached to the mounting projection 23. The insertion of the insertion portion 20 beyond the abutting position is regulated by hitting the edge of the hole 200.

On the other hand, the dimension z-3 between the projection ends of the pair of positioning projections 23, 23 of the insertion portion 20 is a virtual position where the inner side surfaces 201a of the pair of engaging recesses 201, 201 in the mounting hole 200 are located. Since it is configured to have a diameter smaller than the diameter y ′ of the circle, by twisting the shaft tool subjected to the regulation of insertion until the positioning protrusion 23 enters the engaging recess 201, As shown in FIG. 4, the insertion portion 2 with respect to the mounting hole 200.
It is possible to allow insertion of 0.

After positioning the shaft in such a direction that the positioning protrusion 23 enters the engaging recess 201 of the mounting hole 200, the insertion portion 20 is further inserted into the mounting hole 200. The dimension between the tips of the pair of elastic engagement pieces 22, 22 is such that the positioning projection 23
Is larger than the dimension z-3 between the projecting ends of the positioning projections 23.
Since the pair of elastic engaging pieces 22, 22 are located immediately above, the pair of elastic engaging pieces 22, 22 are further flexed inward while the outer surface thereof is in contact with the edge of the engaging recess 201.

Thereafter, the pair of elastic engagement pieces 22, 22 are
The engagement surface 22a provided on the tip side of the second attachment object S further extends to a position beyond the hole edge on the side of the attachment hole 200 of the second attachment object S which is not in contact with the first attachment object M. When the insertion portion 20 is inserted, the engagement surface 22a is a surface that faces the shaft head 10. Therefore, the engagement surface 22a is provided between the engagement surface 22a and the tip edge 22b of the elastic engagement piece 22. The elastic engagement piece 22 is elastically returned to the outside until the stepped surface 22c is in contact with the inner side surface 201a of the engagement recess 201.

As a result, the pair of elastic engagement pieces 22, 2 are
In this state, since the engagement surface 22a of No. 2 is positioned so as to face the surface of the second attachment object S that does not face the first attachment object M following the edge of the engagement recess 201, The shaft is fixed to the second mounting object S in a state where it does not slip out of the mounting hole 200,
Also, in this state, the shaft hole 10 on the side of the first attachment object M that does not face the second attachment object S
Since the lower surface of the expanded diameter portion 11 of the shaft head 10 is brought into contact with the zero edge, the first attachment target M is attached to the second attachment target M by the shaft tool fixed to the second attachment target S. The object S is assembled.

Further, since the shaft tool positions the intermediate portion 12 of the shaft head portion 10 in the shaft hole 100 with respect to the first mounting object M assembled in this manner, the first mounting object M is mounted. The object M can be rotated or rotated with respect to the second attachment object S with the intermediate portion 12 of the shaft head 10 as the center of rotation or rotation.

With this rotation or rotation, the shaft member fixed in the mounting hole 200 of the second mounting object S is
A force is applied in the direction in which the shaft tool is rotated in the direction of the rotation or rotation, but the shaft tool causes the pair of elastic engagement pieces 22 and 22 to move into the pair of mounting holes 200. The engaging recesses 201, 201 are fixed to the second mounting object S in a state of being respectively housed therein, and the force to be rotated is applied to the side surface of the elastic engaging piece 22 and the engaging recess 201.
The side wall surface 201b of the first attachment target is received in contact with the first attachment target M by the rotation or rotation of the first attachment target M. The assembled state of M and the second attachment object S is always kept stable.

Further, in this embodiment, the second mounting target in the shaft hole 100 is provided below the shaft head 10 located in the shaft hole 100 of the first mounting target M. Protruding downward from the hole edge on the side facing the object S, and
A pair of protrusions 13 that fit in the engaging recesses 201 of the mounting hole 200 of the second mounting object S are formed.

Therefore, in the shaft tool according to this embodiment, a pair of engaging recesses 201, 201 in the mounting hole 200 of the second mounting object S are provided in the insertion portion 20 respectively. Elastic engagement pieces 22, 22
Not only engaging but also the protrusion 13 is accommodated in the engaging recess 201, the shaft tool can be inserted and fixed in the mounting hole 200, and the second mounting target of the first mounting target M can be fixed. Assembling with respect to S can be secured more stably.

That is, in the shaft tool according to this embodiment, the insertion portion 20 is inserted into the shaft hole 100 of the first mounting object M and the mounting hole 200 of the second mounting object S. As a result, both attachment objects M and S can be assembled with one touch in a state in which the first attachment object M can be rotated, etc., without the need for other parts. Mounting hole for object S 200
Even if the side wall S ″ and the like are close to each other, the assembly can be performed without any trouble.

From the viewpoint of imparting a required elastic deformation characteristic to the elastic engaging piece 22 provided in the insertion portion 20, this shaft tool is integrally formed by using a plastic material. This is one of the best modes for carrying out the invention.

In the embodiment described above, the mounting hole 200 of the second mounting object S is provided with a pair of engaging recesses 201, 201 on both sides in the diametrical direction. Although the pair of elastic engaging pieces 22 and 22 which are fitted and engaged in the engaging concave portions 201 and 201 are provided in the inserting portion 20, the mounting holes 200 are engaged at three or more positions in the radial direction. When a recess is provided, it is best in the present invention to construct the shaft tool by providing three or more elastic engaging pieces that fit into the engaging recesses at three or more places and are engaged in the inserting section 20. Is one of the embodiments.

In the embodiment described above, the shaft hole 100 is provided in the circular recess 101 provided on the side of the first mounting object M that does not face the second mounting object S. The expanded portion 11 of the shaft head 10 of the shaft tool that has been opened and is housed in the shaft hole 100 does not project from the plate surface of the first attachment target M.

Further, the shaft hole 10 in the surfaces of the first attachment object M and the second attachment object S facing each other.
A ring-shaped rising peripheral wall M ′, S ′ is provided on the 0 peripheral edge and the peripheral edge of the mounting hole 200, and a second mounting target is provided outside the rising peripheral wall M ′ provided on the first mounting target M. Thing S
Both the mounting objects M, S are assembled in a state in which the compatible rising peripheral walls M ′, S ′ are in contact with each other and the peripheral wall surfaces are in contact with each other so that the insides of the rising peripheral walls S ′ are provided in contact with each other. As a result, all the load associated with the rotation of the first attachment target M is not applied to the shaft tool, and the shaft tool is less likely to be deformed.

[0049]

The shaft tool according to the present invention comprises a circular shaft hole 100 formed through the first mounting object M and a circular mounting hole 200 formed through the second mounting object S. And a mounting hole 200 of the second mounting object S, which is provided with a plurality of engaging recesses 201, 201 ... The shaft hole 1 of the first mounting object M is inserted into the mounting hole 200 of the second mounting object S from the shaft hole 100 of the object M, and one end of the shaft hole 1 of the first mounting object M is inserted.
00 edge, and the other end side is the second attachment object S
Of the second mounting object S by engaging with the mounting hole 200 of
Is a shaft tool for rotatably or rotatably assembling the first mounting object M, and the shaft tool engages a plurality of engagements in the mounting holes 200 of the second mounting object S with the other end side. The engaging recesses 20 are introduced into the recesses 201, 201 ...
1. A plurality of elastic engagement pieces 2 that are engaged with each other on the tip side
2, 22, ... Are provided in a protruding shape, and are provided continuously to one end portion of the first attachment object M that abuts on the edge of the shaft hole 100, and the first attachment object M is provided. Since the shaft head 10 is located inside the shaft hole 100 of the mounting object M, the shaft hole 100 of the first mounting object M and the second mounting object S that are in communication with each other are provided. Shaft hole 10 of the first mounting object M with respect to the mounting hole 200 of
The plurality of engaging recesses 2 in the mounting hole 200 of the second mounting object S are inserted through the insertion portion 20 from the 0 side.
01, 201 ... Each of the plurality of elastic engagement pieces 22,
22 ... by engaging the second mounting object S
The shaft head 1 which can be mounted and fixed to the second mounting object S with one touch and is located in the shaft hole 100 of the first mounting object M in the shaft tool fixed to the second mounting object S in this way.
The first attachment object M can be rotatably or rotatably assembled to the second attachment object S with 0 as the rotation or rotation center.

As a result, even when the mounting hole 200 is formed in a corner portion of the second mounting object S or the like where the side wall S ″ and the like are close to the mounting hole 200. The assembly can be performed easily and surely without using other parts.

Further, the shaft has a plurality of elastic engaging pieces 22, 22 provided on the inserting portion 20 in a plurality of engaging concave portions 201, 201 ... In the attaching hole 200 of the second attaching object S, respectively. Since it is engaged and inserted into the mounting hole 200 and fixed, the mounting hole is rotated or rotated about the shaft head 10 as the center of rotation or rotation. It is possible to stably assemble the first attachment object M to the second attachment object S without rotating or rotating the shaft within 200.

Further, the shaft tool according to the present invention is provided with the positioning projections 23 at or below the projecting bases of the elastic engaging pieces in the insertion section 20.
Alternatively, each of the elastic engaging pieces 22, 22, ... Is provided with an overhanging positioning protrusion 23 corresponding to the positioning protrusion 23, and the diameter of an imaginary circle passing through the projecting ends of the plurality of positioning protrusions 23. z-3 is larger than the diameter y in the mounting hole 200 of the second mounting object S and is larger than the diameter y'of an imaginary circle passing through the inner side surface 201a of each of the engaging recesses 201, 201. Since it is configured to be small, the elastic engagement pieces 22, 2 in the insertion portion 20 inserted from the shaft hole 100 of the first attachment object M.
2 ... each of the engaging recesses 2 of the mounting hole 200.
01, 201 ... Only in the direction of entering the mounting hole 20
The insertion portion 20 can be inserted into the insertion hole 0, and the shaft tool can be accurately attached to the attachment hole 200 without any special consideration.

[Brief description of the drawings]

FIG. 1 is a perspective view of a shaft tool, a first attachment object M, and a second attachment object S.

FIG. 2 is a side view showing a usage state of the shaft tool.

FIG. 3 is a bottom view showing how the shaft tool is used.

FIG. 4 is a side view showing a usage state of the shaft tool.

FIG. 5 is a side view showing a usage state of the shaft tool.

FIG. 6 is a bottom view showing how the shaft tool is used.

FIG. 7 is a side view showing a usage state of the shaft tool.

FIG. 8 is a front view of a shaft tool.

9 is a sectional view taken along line AA in FIG.

10 is a sectional view taken along line BB in FIG.

FIG. 11 is a right side view of the shaft tool.

FIG. 12 is a bottom view of the shaft tool.

FIG. 13 is a plan view of a shaft tool.

[Explanation of symbols]

 M First mounting object 100 Shaft hole S Second mounting object 200 Mounting hole 201 Engagement recess 201a Inner side surface y Diameter y'diameter 10 Shaft head 13 Projection 20 Insertion portion 22 Elastic engagement piece 23 Positioning projection Part z-3 diameter

Claims (2)

[Claims] 1. A circular shaft hole provided through a first mounting object and a circular mounting hole provided through a second mounting object, which communicate in a radial direction from the mounting hole. With respect to the mounting hole of the second mounting object provided with a plurality of engaging recesses provided, is inserted into the mounting hole of the second mounting object from the shaft hole of the first mounting object, One end is brought into contact with the shaft hole edge of the first attachment target, and the other end is engaged with the attachment hole of the second attachment target, so that the first attachment target is attached to the second attachment target. A shaft tool for rotatably or rotatably assembling one mounting object, the shaft tool being guided to the other end side into a plurality of engaging recesses in a mounting hole of the second mounting object. A plurality of elastic engagement pieces that are respectively engaged with the engagement recesses on the distal end side are provided in a protruding shape, and the first recess is provided. A shaft head that is provided continuously to one end portion that abuts the shaft hole edge of the mounting object, and that is located in the shaft hole of the first mounting object; The protruding base portion of each elastic engagement piece or a positioning protruding portion is provided below the protruding base portion,
Alternatively, each of the elastic engaging pieces includes a protruding positioning protrusion corresponding to the positioning protrusion, and the diameter of an imaginary circle passing through the projecting ends of the plurality of positioning protrusions is
A shaft tool having a diameter larger than a diameter of a mounting hole of the second mounting object and smaller than a diameter of an imaginary circle passing through the inner side surfaces of the engagement recesses. 2. A projecting portion that fits into an engaging recess of the mounting hole of the second mounting object is provided below the shaft head located in the shaft hole of the first mounting object. Claim 1
Shaft described.