JPH0932824A - Other parts screwed structure to resin parts - Google Patents

Abstract

(57) [Abstract] [Purpose] It is necessary to prevent the time and cost from increasing the cost of crushing and recycling resin parts and increasing the cost. Prevent getting enough. [Structure] A cylindrical protrusion 10b is provided on a flat plate portion 10a of a front cover 10 which covers the front surface of a copying machine main body. The protrusion 10
While the resin cylinder 11 is fitted inside the b,
The handle 12 is placed on the upper end of b, the tapping screw 13 is screwed into the center hole 11b of the resin cylinder 11 through the mounting hole 12a, the resin cylinder 11 is inflated, and the outer periphery of the resin cylinder 11 is pressed against the inner periphery of the storage portion 10c. Prevent from coming off and front cover 1
Fix the handle 12 to 0.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin component for screwing another component such as a handle to a resin component such as an outer cover of a device body in office equipment and household electric equipment. Other components related to screwing structure.

[0002]

2. Description of the Related Art Conventionally, for example, in a copying machine, a handle or other parts such as a switch on / off member are screwed to a front cover of a device body which is a resin part. Among such other component screw fastening structures for resin components, there is one having the configuration shown in FIG. 7 or FIG. 8, for example.

FIG. 7 shows a front cover 1 of the device body.
Is provided with a bottomed tubular projection 1b into which a nut-shaped metal part 2 is press-fitted, a grip 3 is placed on the projection 1b, and a screw member is inserted into the screw hole 2a of the metal part 2 through the mounting hole 3a. 4 is screwed in, and the handle 3 is attached to the front cover 1 by the screw member 4.
It was screwed to.

In the structure shown in FIG. 8, the flat plate portion 1a of the front cover 1 is provided with a bottomed cylindrical projection 1b, the grip 3 is placed on the projection 1b, and the central hole 1c is inserted through the mounting hole 3a. Screw in the tapping screw 4 and use the tapping screw 4 to grip the handle 3
Was screwed to the front cover 1.

[0005]

By the way, in recent years, from the viewpoint of resource protection and natural environment protection, in office equipment, household electrical equipment, etc., after recovery, the constituent parts of the equipment body are crushed and recycled, It has been attempted to reduce waste of resources and waste. In addition, it is practiced to reduce the bulk of dust by crushing and discarding the component parts.

However, in the conventional other component screw fastening structure to the resin component as shown in FIG. 7, when the front cover 1 is crushed for recycling or disposal, it is press-fitted and attached. Since the metal part 2 has to be removed, there is a problem that it takes time and costs increase. On the other hand, the structure shown in FIG. 8 has a problem that the screw hole is damaged when the screw member 4 is removed once or twice, and screwing becomes insufficient.

[0007] Therefore, an object of the present invention is to prevent the time and cost from being increased when the resin parts are crushed and used for recycling, and at the same time to fix the screw holes by easily handling them when they are damaged. The purpose is to prevent the situation from becoming insufficient.

[0008]

Therefore, a structure for screwing another component to a resin component according to claim 1 is, for example, a front cover 10 or the like which is crushed and recycled for use, as in the following illustrated embodiment. A resin part, a resin cylinder 11 to be fitted into a housing part 10c of the resin part, and a mounting hole 12a aligned with a central hole 11b of the resin cylinder 11.
Screwed into the central hole 11b through the attachment hole 12a of the other component such as the handle 12 and the like, and the resin cylinder 11 is inflated and its outer periphery is pressed against the inner periphery of the storage portion 10c. And a screw member such as a tapping screw 13 for fixing the other component to the component.

According to a second aspect of the present invention, for example, as in the following illustrated embodiment, in the other component screw-fastened structure to the resin component according to the first aspect, the resin cylinder 11 has a slit 11c in the axial direction thereof. Is provided.

According to a third aspect of the present invention, for example, as in the following illustrated embodiment, in the other component screw fastening structure to the resin component according to the first aspect, the resin cylinder 11 is provided with irregularities on its outer periphery. It is characterized by

According to a fourth aspect of the present invention, for example, as in the following illustrated embodiment, in the other component screw fastening structure to the resin component according to the first aspect, the outer periphery of the end portion in the fitting direction of the resin cylinder 11 is described. While the enlarged portion 11e is provided on the step portion 1, the stepped portion 1 engages with the enlarged portion 11e when the screw member is screwed in.
0f is provided in the storage portion 10c.

According to a fifth aspect of the present invention, a flange portion 11a is provided at one end of the resin cylinder 11 in the other component screw fastening structure for the resin component according to the first aspect, for example, as in the following illustrated embodiment. The stepped portion 1 is provided in which the resin cylinder 11 is fitted into the housing portion 10c from a direction opposite to the screwing direction of the screw member, while the collar portion 11a is engaged with the housing portion 10c.
It is characterized in that 0d is provided.

According to a sixth aspect of the present invention, the resin component and the resin cylinder 11 are the same in the other component screw fixing structure to the resin component according to the first aspect, for example, as in the following illustrated embodiment. It is formed of a material.

[0014]

In the present invention, when another component is screwed to the resin component, the resin cylinder 1 is placed in the housing portion 10c of the resin component.
1 is fitted, the mounting hole 12a is aligned with the center hole 11b of the resin cylinder 11, other parts are superposed on the resin component, and the screw member is screwed into the center hole 11b through the mounting hole 12a of the other component to expand the resin cylinder 11. The outer periphery is pressed against the inner periphery of the storage portion 10c to prevent it from coming off, and other components are fixed to the resin component. Then, if the screw hole is damaged by repeatedly attaching and removing the screw member, a new resin cylinder 11
Replace with On the other hand, after use, the resin member is collected, the screw member is removed, other components are removed from the resin component, and the resin component is crushed and recycled for use with the resin cylinder 11 attached. Further, the resin parts are crushed and discarded while the resin cylinder 11 is attached.

According to the second aspect, when the screw member is screwed into the center hole 11b of the resin cylinder 11, the slit 11 is formed.
Spread c.

According to the third aspect, when the screw member is screwed into the central hole 11b of the resin cylinder 11, the resin cylinder 11
Is inflated and the irregularities on the outer periphery thereof are pressed against the inner periphery of the storage portion 10c.

According to the fourth aspect, when the screw member is screwed into the center hole 11b of the resin cylinder 11, the enlarged portion 11 is formed.
e is engaged with the step portion 10f.

According to the fifth aspect, when the screw member is screwed into the center hole 11b of the resin cylinder 11, the collar portion 11a is formed.
Is engaged with the step portion 10d.

According to the sixth aspect, when it is recycled, it is crushed together.

[0020]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a longitudinal sectional view showing a structure for screwing a handle to a front cover according to an embodiment of the present invention.

Reference numeral 10 in the drawing is a large front cover which is a resin component for covering the front surface of the main body of the copying machine (not shown). The front cover 10 is made of PPO resin, for example, and is used for the flat plate portion 1.
0a is formed, and the protrusion 10b is formed on the flat plate portion 10a.
Is integrally provided upward in the figure. The protruding portion 10b has a bottomed tubular shape with a low height, and the storage portion 10c is provided inside. The storage portion 10c is provided with a step portion 10d in the middle thereof, a D-shaped fitting concave portion 10e on the opening side, and a resin cylinder 11 stored therein.

The resin cylinder 11 is made of, for example, polyacetal or nylon resin in a short cylindrical shape as shown in FIG. 2, and has a central hole 11b therein. A flange portion 11 a is provided at one end of the resin cylinder 11. The collar part 11
a has a D shape by cutting out a part of the outer circumference. At the other end of the resin cylinder 11, a slit 11c is provided in the axial direction so as to face the radial direction. Then, as shown in FIG. 1, the slit 11c is fitted into the accommodating portion 10c from the end portion side thereof, and a step a is formed between the upper end of the protrusion 10b and the upper end of the protrusion 11b so that the collar portion 11a is inserted into the fitting recess 10e. Make it come in and stop.

A handle 12 which is another component is provided on the upper end of the protrusion 10b. The handle 12 is plate-shaped and has a mounting hole 1
2a, and the mounting hole 12a is aligned with the central hole 11b of the resin cylinder 11 and overlapped with the front cover 10.

Then, a tapping screw 13, which is a screw member, is screwed into the central hole 11b through the mounting hole 12a, the slit 11c is opened to inflate the resin cylinder 11, and the outer periphery of the resin cylinder 11 is placed inside the accommodating portion 10c. It is pressed against the circumference to prevent the resin cylinder 11 from coming off, and the handle 12 is fixed to the front cover 10.

After that, when the tapped screw 13 is removed once or twice and the screw hole is damaged, the old resin cylinder 1
1 is removed from the storage portion 10c and replaced with a new resin cylinder 11.

On the other hand, after the life of the copying machine is recovered, the tapping screw 13 is removed, the handle 12 is removed, and the resin cylinder 1 is removed.
The front cover 10 is crushed with 1 attached and recycled. When not used for recycling, the front cover 10 is crushed and discarded with the resin cylinder 11 attached.

In the illustrated embodiment, the tapping screw 13 is screwed into the center hole 11b of the resin cylinder 11 and the resin cylinder 11 is
Was inflated and the outer circumference was pressed against the inner circumference of the storage portion 10b, and the handle 12 was fixed to the front cover 10. However, the configuration is not limited to this, and the configuration illustrated in FIGS. 3 to 6 may be adopted in order to reliably prevent the resin cylinder 11 from coming off from the front cover 10.

In the structure shown in FIG. 3, convex portions 11d are provided on the outer periphery of the resin cylinder 11 to form irregularities on the peripheral surface. With this configuration, when the tapping screw 13 is screwed into the center hole 11b of the resin cylinder 11, the convex portion 11d on the outer periphery of the resin cylinder 11 is formed.
Bites into the inner periphery of the storage portion 10c to make it difficult for the resin cylinder 11 to come off.

Further, in the structure shown in FIG. 4, the storage portion 10c is provided.
Is provided with a step portion 10f and an enlarged recessed portion 10g in the lower portion. On the other hand, the resin cylinder 11 is provided with an enlarged portion 11e on the outer circumference of the end portion opposite to the side where the collar portion 11a is provided, and the slit 11c is narrowed to put the enlarged portion 11e in the enlarged recess 10g.
With this configuration, when the tapping screw 13 is screwed in as illustrated, the enlarged portion 11e is engaged with the step portion 10f,
Prevent the resin tube 11 from coming off.

Further, in the structure shown in FIG.
c is provided so as to penetrate in the axial direction of the protrusion 10b, and the flat plate portion 10a
A step portion 10d is provided on the side and a D-shaped fitting concave portion 10e is provided. On the other hand, the resin cylinder 11 shown in FIG. 6 is fitted into the accommodating portion 10c from the direction of the arrow shown in FIG. 5 with the end portion having the slit 11c facing upward, and the collar portion 11a is put in the fitting concave portion 10e. Stops rotation and steps 10d
Hit against. With this configuration, when the tapping screw 13 is screwed in as shown in FIG. 5, the flange portion 11a is engaged with the step portion 10d to prevent the resin cylinder 11 from coming off.

In the illustrated embodiment described above, the resin cylinder 1
1 was made of PPO resin, the front cover 10 was made of polyacetal or nylon resin, and the resin cylinder 11 and the front cover 10 were made of different resin materials. However, the configuration is not limited to this, and the resin cylinder 11 and the front cover 10 may be formed using the same resin material. By doing so, when crushed and recycled, other resin materials are not mixed and it is possible to prevent deterioration of quality.

Further, in the illustrated embodiment, the resin cylinder 1
The flange portion 11a of No. 1 was D-shaped, and was inserted into the fitting recess 10e of the same shape to prevent the resin cylinder 11 from rotating. But,
The present invention is not limited to this, but various ideas are possible. For example, the flange 11a may be formed into an oval shape or a polygonal shape, and the flange 11a may be inserted into the fitting recess 10e having the same shape to prevent the resin cylinder 11 from rotating.

[0033]

As described above, according to the present invention, when the resin parts are crushed and recycled for use, the resin tube may be attached to the resin parts. Therefore, it is not necessary to remove the metal parts from the resin parts as in the conventional case. Therefore, the cost can be reduced. Also, when the screw member is removed once or twice and the screw hole is damaged, it is only necessary to replace the resin cylinder.
This can be dealt with easily and can prevent insufficient screwing.

According to the second aspect of the present invention, when the screw member is screwed into the center hole of the resin cylinder, the slit is widened, so that the resin cylinder can be easily expanded and reliably pressed against the resin component.

According to the third aspect of the present invention, when the screw member is screwed into the center hole of the resin cylinder, the irregularities on the outer periphery of the resin cylinder are strongly pressed against the inner periphery of the housing portion. It becomes difficult to remove the resin tube, and the resin tube can be more firmly fixed to the resin component.

According to the fourth aspect, when the screw member is screwed into the center hole of the resin cylinder, the enlarged portion is engaged with the step portion, so that the resin cylinder can be more reliably prevented from coming off. it can.

According to the fifth aspect of the invention, when the screw member is screwed into the center hole of the resin cylinder, the flange portion is engaged with the step portion, so that the resin cylinder can be prevented from coming off with a simple structure. This makes it possible to prevent the resin cylinder from coming off more reliably.

According to the sixth aspect, since the resin component and the resin cylinder are made of the same material, when crushed together and recycled for use, other materials are not mixed and the deterioration of quality is prevented. be able to.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view showing a structure for screwing a handle to a front cover according to an embodiment of the present invention.

FIG. 2 is a perspective view of a resin cylinder used in the handle screwing structure.

FIG. 3 is a perspective view of another resin cylinder used in the present invention.

FIG. 4 is a vertical sectional view showing a structure for screwing a handle to a front cover according to another embodiment of the present invention.

FIG. 5 is a vertical sectional view showing a structure for screwing a handle to a front cover according to still another embodiment of the present invention.

FIG. 6 is a perspective view of a resin cylinder used in the handle screwing structure.

FIG. 7 is a vertical sectional view showing a conventional structure for screwing a handle to a front cover.

FIG. 8 is a vertical cross-sectional view showing another structure of a handle screwed to a front cover in another example of the related art.

[Explanation of symbols]

 10 front cover (resin part) 10c storage part 10d step part 10f step part 11 resin tube 11a collar part 11b center hole 11c slit 11e enlarged part 12 handle (other part) 12a mounting hole 13 tapping screw (screw member)

Claims (6)

[Claims] 1. A resin component to be crushed for recycling, a resin cylinder to be fitted into a storage portion of the resin component, and another component to be fitted with a mounting hole in the center hole of the resin container and to be superposed on the resin component. A screw member for screwing the resin cylinder into the central hole through the mounting hole of the other component, swelling the resin cylinder and pressing the outer periphery of the resin container to the inner periphery of the housing portion, and fixing the other component to the resin component. , Other parts screwed structure to resin parts. 2. The other component screw fastening structure for a resin component according to claim 1, wherein the resin cylinder is provided with a slit in the axial direction thereof. 3. The unevenness is provided on the outer circumference of the resin cylinder,
Another component screw fastening structure to the resin component according to claim 1. 4. The expanded portion is provided on the outer periphery of the end portion in the fitting direction of the resin cylinder, and the storage portion is provided with a stepped portion with which the expanded portion engages when the screw member is screwed in. Other parts screwed structure to the resin parts described in. 5. A step in which a flange portion is provided at one end of the resin cylinder, and the resin cylinder is fitted into the accommodating portion from a direction opposite to a screwing direction of the screw member, while the collar portion is engaged in the accommodating portion. The other component screw fastening structure to the resin component according to claim 1, wherein the other component is screwed. 6. The other component screw fastening structure for a resin component according to claim 1, wherein the resin component and the resin cylinder are formed of the same material.