JPH07208424A - Board material connecting tool - Google Patents

Abstract

PURPOSE:To facilitate assemblying work of a board material connecting tool by splitting the claw end on the fitted section towards it basal part. CONSTITUTION:A female member 40 and a male member 50 are integrally formed in one unit, respectively, while a drum section 70 of the female member 40 is provided with an elastically variable tapering part 71, which is located at the head of the drum section 70 and its diameter contracted towards this head, and a claw part 72 of a fitting section 73, which has its base end portion continuously connected to the tapering part 71, has its head extending towards a collar 60 side as its diameter contracting inwards in the radius direction and splitted into a plurality of numbers by a plurality of slits cut in from the head towards the base end.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting member for plate materials, and more particularly, to an assembly work thereof.

[0002]

2. Description of the Related Art FIG. 11 is a vertical cross-sectional view of a conventional plate member connector. As shown in FIG. 11, a conventional plate connecting member has a through hole 10 that penetrates two plates 100 and 110 that are stacked.
1, 111, a female member 120 made of metal inserted from below the through hole 111 of the lower plate 110, and the through hole 101 of the upper plate 100.
2 plates 1 inserted from above and between the female member 120 and
Male member 130 made of metal that holds 00,110 in place
Was equipped with.

The female member 120, as shown in FIG.
A collar 121 having an outer diameter larger than the inner diameters of the through holes 101, 111.
And a body portion 123 having a fitting portion 122 which extends from the flange portion 121 and fits into the through holes 101 and 111, and into which the male member 130 fits. The male member 130 is shown in FIG.
As shown in FIG. 1, a head portion 131 having an outer diameter larger than the inner diameters of the through holes 101 and 111, and a body portion 12 extending from the head portion 131.
The fitting portion 122 of No. 3 has a shaft portion 132 that fits into the fitting portion 122.

As shown in FIG. 11, the fitting portion 122 of the female member 120 is provided with a claw portion 124 capable of expanding its diameter by elastic deformation when the shaft portion 132 is pushed. The male member 130
As shown in FIG. 11, the shaft portion 132 has a swelling portion 133 having an outer diameter larger than the inner diameter of the claw portion 124 at the tip, and a swelling portion 133 located at the base end side of the swelling portion 133. It was known to have a stepped portion 134 to be caught by.

[0005]

However, in the above-described conventional plate member connector, the body portion 123 of the female member 120 is made up of two plates.
The first problem is that inserting them into the through holes 101, 111 of 100, 110 is troublesome and time-consuming. That is, the outer diameter of the body 123 of the female member 120 is equal to the through hole 1 of the two plates 100 and 110.
Since it is set equal to the inner diameter of 01,111, both plates 100,11
If the 0 through holes 101 and 111 were not accurately aligned, the body 123 of the female member 120 would not be able to pass through. For example, in FIG.
When the position of the through hole 101 of the one plate 110 located on the lower side in FIG. 1 is laterally displaced to the left and right in FIG. A step is formed between the through holes 101 and 111, and the female member 1
The tip of the body portion 123 of 20 hits, making it difficult to insert the body portion 123.

Further, in the above-mentioned conventional plate member connecting tool,
Since the outer diameter of the body portion 123 is formed to be substantially the same as the inner diameter of the through holes 101 and 111, even when the shaft portion 132 of the male member 130 is inserted into the fitting portion 122 of the female member 120, the claw portion 124 The stress concentrates only on the base end and cannot be easily elastically deformed.
It took a lot of force to deform 4. For this reason,
There is a second problem that it is not easy to insert the male member 130 into the fitting portion 122 of the female member 120 to assemble it.

Therefore, the invention according to claim 1 is made in view of the first and second problems of the above-mentioned conventional technique, and the purpose thereof is to easily perform the assembling work. It is an object of the present invention to provide a plate connector that can be used. The invention according to claim 2 is the above-mentioned claim 1.
In addition to the object described above, it is an object of the present invention to provide a plate member connector that can be applied to a plate having a non-uniform plate thickness by having an elastic contact portion on the flange portion of the female member.

The invention according to claim 3 is the above-mentioned claim 1.
Alternatively, in addition to the object described in 2, it is an object of the present invention to provide a plate member coupling tool that has an elastic contact portion on the head of the male member and can be applied to a plate having an uneven plate thickness.

[0009]

The present invention is to achieve the above-mentioned object, and the contents thereof will be described below with reference to the embodiments shown in the drawings. According to the first aspect of the invention, the female member (40) and the male member (50) are integrally molded of plastic, and the body portion (70) of the female member (40) is formed.
Is provided with an elastically deformable tapered portion (71) located at the distal end portion and having a diameter reduced toward the distal end portion, and the claw portion (72) of the fitting portion (73) has a proximal end portion. Along with the tapered portion (71), the tip portion is radially inwardly reduced and the collar portion (60) is formed.
It is characterized in that it is divided into a plurality of slits (74) that extend toward the side and are cut from the tip end portion toward the base end portion.

According to the second aspect of the invention, the collar portion of the female member (40) is provided.
(60), while gradually reducing the wall thickness from its surroundings,
The body (70) extends diagonally toward the surface of (30).
An annular elastic contact portion (61) having a hemispherical inner peripheral surface is provided on the side. The invention according to claim 3 is the male member.
The head (80) of the (50) extends obliquely toward the surface of the plate (20) while gradually reducing the wall thickness from its surroundings, and has a hemispherical inner peripheral surface on the shaft (90) side. It is characterized by being provided with an annular elastic contact portion (81) having a.

[0011]

Therefore, according to the first aspect of the present invention, the body portion (70) of the female member (40) is provided with the tapered portion (71) located at the front end portion thereof and having a diameter reduced toward the front end portion. Have Therefore, as shown in FIG. 3, the through hole (31) of one plate (30) located on the lower side in the figure is different from the through hole (21) of the other plate (20) located on the upper side thereof. Even if the position of () is laterally displaced in the figure, the tapered portion (71) of the body portion (70) of the female member (40) can be easily inserted.

Not only the lateral displacement of the through holes (21, 31) of the upper and lower plates (20, 30) but also the pitch displacement of the drilling positions of the both through holes (21, 31) or the both through holes (21, 31). Even if there is an inner diameter error of 31), it can be absorbed by the tapered portion (71) of the body portion (70). Further, in the fitting portion (73) of the body portion (70), the base end portion of the fitting portion (73) is connected to the tapered portion (71), and the tip end portion of the collar portion (60) is radially inwardly reduced. ) Side and is divided into a plurality of claws (72) by a plurality of slits (74) cut from the distal end toward the proximal end.
have.

Therefore, the fitting portion (73) has a bulging portion of the shaft portion (90).
When (91) is inserted, the inner peripheral surface of the claw portion (72) is pressed against the outer peripheral surface of the bulging portion (91), and the diameter is expanded by elastic deformation,
The tip portion of the body portion (70) connected to the base end portion of the claw portion (72) also easily elastically deforms. That is, since the deformation area is not concentrated in one place of the claw (72), the claw (72) and the tapered portion (71) continuously provided at the base end of the claw (72) are elastically deformed. , The deformation area becomes wide and it is possible to deform as a whole without difficulty. As a result, the bulging portion (91) can easily get over the tip portion of the claw portion (72).

When the tip of the claw portion (72) gets over the bulging portion (91), the claw portion (72) is reduced in diameter, and a step portion formed on the base end side of the bulging portion (91). It gets caught in (92). Therefore, even if the male member (50) is pulled out from the female member (40), the claw (7
The tip portion of 2) is caught by the step portion (92), and the male member (50) of the assembled coupling tool (10) does not come off from the female member (40).

According to the invention of claim 2, the female member (92)
The collar portion (60) of the annular shape having a hemispherical inner peripheral surface extending obliquely toward the surface of the plate (30) while gradually reducing the thickness from the periphery of the collar portion (60). Elastic contact part (6
Have 1). Therefore, when the female member (40) is pushed into the through hole (31) weakly, the tip of the elastic contact portion (61) comes into contact with the surface of the plate (30) and stops.

On the other hand, when the female member (40) is strongly pushed into the through hole (31), the tip end of the elastic contact portion (61) is pushed against the surface of the plate (30) and elastically deforms. The body (70) has through holes (31,2
Go deep inside 1). That is, by changing the force of pushing the female member (40) into the through holes (31, 21), the elastic contact portion (61) is elastically deformed, and the body portion (70) is passed through the through holes (31, 21).
Can be moved back and forth.

As a result, even if the plate thickness of the plates (20, 30) is not uniform, the body portion (70) of the female member (40) is freely moved into and out of the through holes (21, 31), and the through holes are formed. The length of the body portion (70) to be inserted into the (31, 21) can be adjusted, and it can be attached to a plate having an uneven plate thickness. According to the invention of claim 3,
The head portion (80) of the male member (50) extends obliquely toward the surface of the plate (20) while gradually reducing the wall thickness from its periphery, and has a hemispherical inner portion on the side of the shaft portion (90). It has an annular elastic contact portion (81) having a peripheral surface.

Therefore, when the male member (50) is weakly pushed into the through hole (21), the tip end of the elastic contact portion (81) contacts the surface of the plate (20) and stops. On the other hand, when the male member (50) is strongly pushed into the through hole (21) and pushed in, the tip of the elastic contact portion (81) causes the plate (20).
The shaft (90) of the shaft (90) is pushed by the surface of the
Go deep inside (31,21).

That is, by changing the force for pushing the male member (50) into the through holes (31, 21), the elastic contact portion (81) is elastically deformed and the shaft portion (90) is passed through the through hole (31). , 21). As a result, even if the plate thickness of the plates (20, 30) is not uniform, the shaft portion (90) of the male member (50) is freely advanced and retracted into the through holes (21, 31), and the through holes (31, Shaft (90) to be inserted into 21)
The length of can be adjusted, even for plates with uneven thickness,
Can be installed.

[0020]

1 to 11 show an embodiment of the present invention, FIG. 1 is a longitudinal sectional view showing a connecting member for plate materials, FIG. 2 is a plan view thereof, and FIG. 3 is an exploded plan view thereof. 4 is a front view of the male member, FIG. 5 is a rear view of the male member, and FIG. 6 is A- of the male member of FIG.
A sectional view taken along line A, FIG. 7 is a front view of the female member, FIG. 8 is a rear view thereof, and FIG. 9 is a sectional view taken along line BB of the female member of FIG.
FIG. 10 is a schematic perspective view showing a usage state of the connecting tool.

In FIG. 10, reference numeral 10 denotes a connecting member for plate materials. As shown in FIG. 10, two slits are provided at the upper end and the lower end of one plate made of plastic, wood, cardboard, corrugated cardboard or the like. (Not shown) is put in, assembled in a box shape, and the plates 20 and 30 piled up at the four corners are stopped by the connecting tool 10 to form the box 11 opened downward.

A lid 12 for covering the box 11 is also formed in the same manner. As shown in FIG. 1, the connector 10 has a through hole 2 having the same diameter that penetrates the upper and lower two plates 20 and 30.
1, 31 and the female member 40 inserted from the upper through hole 21 toward the lower through hole 31, and conversely, the female member 40 inserted from the lower through hole 31 toward the upper through hole 21. And a male member 50 for pressing and fixing the two upper and lower plates 20 and 30 therebetween. The female member 40 and the male member 50 are integrally formed of a thermoplastic resin such as POM which has appropriate elasticity and rigidity.

As shown in FIGS. 1 to 3 and 7 to 9, the female member 40 has a circular collar portion 60 having an outer diameter larger than the inner diameter of the through hole 31, and extends from the collar portion 60, and A fitting portion that has an outer diameter slightly smaller than the inner diameters of the holes 21 and 31 and that fits into the through holes 21 and 31 and into which the male member 50 fits.
And a body portion 70 having 73. The collar portion 60 is shown in FIG.
As shown in FIGS. 3 to 7 and 9, while gradually decreasing the wall thickness from the periphery thereof, it extends obliquely toward the surface of the plate 30 and has an annular shape having a hemispherical inner peripheral surface on the body portion 70 side. The elastic contact portion 61 is provided.

As shown in FIGS. 1 to 3 and 7 to 9, the body portion 70 has an elastically deformable tapered portion 71 located at the tip portion thereof and having a diameter reduced toward the tip portion. As shown in FIGS. 1 and 7 to 9, the fitting portion 73 is provided with a claw portion 72 that can be expanded in diameter by elastic deformation when the male member 50 is pushed. As shown in FIGS. 1 and 7 to 9, the claw portion 72 has a base end portion continuously connected to the tapered portion 71, and a tip end portion facing the flange portion 60 side while being radially inwardly reduced. And is divided into three by three slits 74 that are cut from the front end toward the base end.

Although the number of slits 74 is three, the number is not limited to this, and the number may be smaller or larger than this number. As shown in FIGS. 1 to 6, the male member 50 includes a circular head 80 having an outer diameter larger than the inner diameters of the through holes 21 and 31, and the head 80.
A shaft portion 90 extending from 80 and fitted in the fitting portion 73 of the body portion 70.
It has and.

As shown in FIGS. 1 to 6, the head 80 extends obliquely toward the surface of the plate 20 while gradually reducing the wall thickness from its periphery, and has a hemispherical shape on the shaft 90 side. An annular elastic contact portion 81 having an inner peripheral surface is provided. On the shaft portion 90 of the male member 50, a bulging portion 91 having a circular cross section with an outer diameter larger than the inner diameter of the pawl portion 72 at the tip, and located on the proximal end side of the bulging portion 91, the pawl Stepped portion where the portion 72 is caught
92 and four ribs 93, which are disposed between the bulging portion 91 and the head portion 80 and are arranged in a cross shape, at 90-degree intervals in the circumferential direction of the shaft portion 90.

The bulging portion 91 and the rib 93 have an outer diameter smaller than the inner diameter of the body portion 70 of the female member 40 excluding the claw portions 72. In one of the ribs 93, as shown in FIG.
Notch 94 having a notch in a part of the outer end near the bulge 91
Are formed. Next, a procedure for assembling the plate member connecting tool 10 having the above-described configuration will be described.

First, as shown in FIG. 1, the plates 20 and 30 are arranged so that the through holes 21 and 31 of the plates 20 and 30 are aligned with each other. Next, as shown in FIG. 1, one of the stacked plates 20 and 30 is a plate 3
The tip of the body portion 70 of the female member 40 is inserted from the through hole 31 of 0 toward the through hole 21. At this time, as shown in FIG. 3, the through hole 31 of the one plate 30 located on the lower side in FIG.
On the other hand, even if the position of the through hole 21 of the other plate 20 located on the upper side thereof is laterally displaced in the figure, the tapered portion 71 of the body portion 70 of the female member 40 is easily inserted. be able to.

Not only the lateral displacement of the through holes 21 and 31 of the upper and lower plates 20 and 30, but also the pitch displacement of the perforation positions of the both through holes 21 and 31, or the inner diameter error of the both through holes 21 and 31 are present. Even in this case, the tapered portion 71 of the body portion 70 can be used for absorption.
Next, as shown in FIG. 1, the male member is moved from the through hole 21 of the plate 20 of the stacked plates 20 and 30 toward the through hole 31.
Insert the tip of the shaft 90 of 50.

Then, as shown in FIG. 1, when the bulging portion 91 of the shaft portion 90 of the male member 50 enters into the fitting portion 73 of the female member 40, the outer peripheral surface of the bulging portion 91 is clawed. The inner peripheral surface of the portion 72 is pushed outward and the claw portion 72 gradually expands in diameter. At that time, the bulge 91
The outer peripheral surface of the claw portion 72 pushes the inner peripheral surface of the claw portion 72 to expand the diameter by elastic deformation, and the tip end portion of the body portion 70 connected to the base end portion of the claw portion 72 also elastically deforms easily.

That is, the deformation area is not concentrated at one place of the claw portion 72, but both the claw portion 72 and the tapered portion 71 connected to the base end of the claw portion 72 are elastically deformed, so that the deformation area is wide. As a whole, it can be transformed without difficulty. This allows
The bulging portion 91 can easily get over the tip portion of the claw portion 72. Then, when the tip end of the claw portion 72 gets over the bulging portion 91, the claw portion 72 contracts with a clicking sound and abuts on the step portion 92 formed on the proximal end side of the bulging portion 91, Get caught.

Therefore, even if the male member 50 is pulled out from the female member 40, the tip portion of the claw portion 72 is caught by the step portion 92, and once the assembled connector 10 is assembled, the male member 50 has the female member 40.
I can't get out of it. Further, when the female member 40 is pushed into the through hole 31 when assembling the connector 10, the elastic contact portion is
The tip of 61 comes into contact with the surface of the plate 30 and stops.

On the other hand, the female member 40 is strong inside the through hole 31,
When pushed in, the tip of the elastic contact portion 61 is pushed by the surface of the plate 30 and elastically deformed, and the body portion 70 thereof deeply enters the through holes 31 and 21. That is, by changing the force for pushing the female member 40 into the through holes 31 and 21, the elastic contact portion 61 is elastically deformed, and the body portion 70 can be moved forward and backward in the through holes 31 and 21.

Further, when the male member 50 is weakly pushed into the through hole 21, the tip of the elastic contact portion 81 contacts the surface of the plate 20 and stops. On the other hand, when the male member 50 is strongly pushed into the through hole 21, the tip of the elastic contact portion 81 is pushed against the surface of the plate 20 and elastically deforms, and the shaft portion 90 is placed inside the through holes 31 and 21. Go deeper.

That is, by changing the force for pushing the male member 50 into the through holes 31 and 21, the elastic contact portion 81 is elastically deformed, and the shaft portion 90 can be moved back and forth into the through holes 31 and 21. As a result, even if the plates 20 and 30 have uneven thickness, the male member 5
By moving the shaft portion 90 of 0 and the body portion 70 of the female member 40 or one of them into and out of the through holes 21 and 31 by a predetermined amount,
It is possible to adjust the length of the shaft portion 90 and the body portion 70 to be inserted into the through holes 31 and 21, or one of them, and it is possible to attach even to a plate having an uneven plate thickness.

Further, one of the ribs 93 of the female member 40 is shown in FIG.
As shown in FIG. 5, a notch 94 is formed, and the male member 50 is formed at the time of molding.
Bone members (not shown) are coupled to support the.
This bone member is torn off in the manufacturing process, but at that time, even if a slight burr remains, the notch 94 is recessed inward, so that the bone member comes into contact with the inner peripheral surface of the claw portion 72 and is defective in assembly. Can be prevented.

[0037]

Since the present invention is constituted as described above, it has the following effects. Claim 1
According to the described invention, it is possible to provide a connecting member for plate materials that can be easily assembled.

According to the second aspect of the present invention, since the flange of the female member has the elastic abutting portion, it is possible to provide a plate member connector that can be applied to a plate having an uneven plate thickness.
According to the third aspect of the present invention, since the male member has the elastic contact portion on the head, it is possible to provide a plate member connector that can be applied to a plate having an uneven plate thickness.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a connecting member for plate materials.

FIG. 2 is a plan view of a plate member connector.

FIG. 3 is an exploded plan view of a plate member connector.

FIG. 4 is a front view showing a male member.

FIG. 5 is a rear view showing the male member.

6 is a cross-sectional view of the male member of FIG. 5 taken along the line AA.

FIG. 7 is a front view showing a female member.

FIG. 8 is a rear view of the female member.

9 is a cross-sectional view of the female member of FIG. 7 taken along the line BB.

FIG. 10 is a schematic perspective view showing a usage state of the connector.

FIG. 11 is a vertical cross-sectional view showing a conventional connecting member for plate materials.

[Explanation of symbols]

 10 Connector 20,30 Plate 21,31 Through hole 40 Female member 50 Male member 60 Collar 61 Elastic contact part 70 Body 71 Tapered part 72 Claw 73 Fitting part 74 Slit 80 Head 81 Elastic contact part 90 Shaft 91 Swelling 92 Step difference

Claims (3)

[Claims] 1. A through hole penetrating a plurality of stacked plate members, a female member inserted from one of the through holes, and a plurality of female members inserted from the other of the through holes. A male member for pressing and fixing the plate member is provided, wherein the female member has a flange portion having an outer diameter larger than the inner diameter of the through hole, and extends from this flange portion and fits into the through hole, and the male member fits. The male member has a head portion having an outer diameter larger than the inner diameter of the through hole, and a shaft portion extending from the head portion and fitted into the fitting portion of the body portion. When the shaft portion is pushed into the fitting portion of the female member,
The male member is provided with a claw portion that can be expanded in diameter, and the shaft portion of the male member has a bulge portion having an outer diameter larger than the inner diameter of the claw portion at the tip, and is located on the base end side of the bulge portion, In a plate member connector having a stepped portion with which the claw portion is caught, the female member and the male member are integrally molded of plastic, respectively, and a body portion of the female member is provided with a tip portion thereof. The tapered portion of the fitting portion has a proximal end portion continuously connected to the tapered portion, and the distal end portion is radially inwardly directed. A plate member connector characterized in that the plate member is divided into a plurality of slits extending from the front end toward the base end while being reduced in diameter and being divided into a plurality of slits. 2. The collar portion of the female member has an annular shape that extends obliquely toward the surface of the plate material while gradually reducing the wall thickness from the periphery and has a hemispherical inner peripheral surface on the body portion side. The plate member connector according to claim 1, further comprising an elastic contact portion. 3. The head part of the male member has an annular shape that extends obliquely toward the surface of the plate material while gradually reducing the wall thickness from its periphery and has a hemispherical inner peripheral surface on the shaft side. The plate member connector according to claim 1 or 2, further comprising an elastic contact portion.