JPH0413448Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a connector used for interconnecting objects to be attached, such as panels.

[Conventional technology]

2. Description of the Related Art Connectors shown in FIGS. 6 and 7 are conventionally known as connectors for connecting objects such as panels to each other. This connector has a circular screw insertion hole 2 formed in the center of a square plate-shaped flange body 1, and two cross-sectional halves facing each other at a predetermined distance from each other on the outer peripheral edge of the lower end of the insertion hole 2. It is made of plastic and is formed by integrally protruding oval-shaped legs 3, 3 with their distal ends spaced apart from each other from their proximal ends. (the part connected to the flange body 1) is formed to have almost the same thickness as the other parts.

When using this connector, as shown in FIG. The first attached object 4 is moved toward the proximal end of the legs 3, 3 by elastically returning the legs 3, 3 to their original states by releasing the pressing force from the outside on the legs 3, 3. , and abut against the lower surface of the flange body 1, and in this state, the shaft portion 6a of the screw 6
is formed on the outer periphery of the screw shaft portion 6a by sequentially passing it through the attachment hole 8 of the second attachment object 7 and the insertion hole 2 of the flange body 1 and inserting it between the leg bodies 3, 3, and rotating the screw 6. The screw shaft portion 6a is advanced between the two legs 3, 3 while threading corresponding threads on the inner surfaces of the two legs 3, 3 with the threaded portions, so that the lower portions of the legs 3, 3 are moved outwardly. The first object 4 to be attached is pressed by the spread legs 3, 3 and fixed to the connecting tool, thereby connecting the two objects 4, 7 to each other.

[Problem that the invention attempts to solve]

However, the above-mentioned connectors have extremely small tolerances for the dimensions of the attachment holes, and if the dimensions of the attachment holes exceed the tolerance range, the objects to be attached cannot be firmly connected to each other.

That is, as shown in FIG. 8, in the conventional coupling tool, a mounting hole 5 that is compatible with the screw 6 used is formed in the first object 4, and the screw 6 is used as the coupling tool.
When using a fitting that is compatible with By strongly pressing the first attachment object 4 against the flange body 1, both attachment objects 4 and 7 can be firmly connected.

However, if the mounting hole 5 is formed that is not compatible with the same screw 6 used, even if the legs 3, 3 are expanded, they will not come into pressure contact with the peripheral wall of the mounting hole 5, and the connector will not be sufficiently fixed to the first object to be attached. . Also in this case, the ninth
As shown in the figure, if a connector having thick legs 3, 3 that fits into the mounting holes 5 is used, the legs 3,
Since 3 is a thick rigid body, it is difficult to bend outward due to the pressing force of the screw 6, and the legs 3, 3 do not deform until they come into contact with the peripheral wall of the mounting hole 5, and the legs 3, 3 and the mounting hole 5 A gap 9,9 is created between the
The connector is not securely fixed to the first object to be attached, and the legs 3, 3 are thick, causing sink marks, and the function of the connector is not fully demonstrated.

Therefore, in the case of the conventional coupling device, when the screw 6 to be used and the mounting hole 5 suitable for the coupling device are formed in the first attachment object 4, both the attachment objects can be reliably connected to each other. When attaching the first attachment object having the hole 5, the two attachment objects are not firmly connected, and there are significant restrictions on the attachment hole 5 to the screw 6 used, or restrictions on the screw 6 used to the attachment hole 5, making it difficult to use. It was an inconvenience.

The present invention was developed in view of the above circumstances, and since the legs widely spread outward, there is a large tolerance for the mounting holes, and therefore it is possible to firmly connect objects that have somewhat larger mounting holes. The purpose is to provide a possible coupling device.

[Means for Solving the Problems] In other words, in order to achieve the above object, the present invention provides screw insertion holes in the flange body, and also provides screw insertion holes at the lower end outer periphery of the insertion holes at a predetermined distance from each other. Two opposing legs are provided in a protruding manner, these legs are inserted into the mounting hole of the object to be mounted, the object is brought into contact with the lower surface of the flange body, and the shaft of the screw is passed through the screw insertion hole. Enter the above-mentioned legs between the bodies,
By rotating this screw, the threaded part formed on the outer periphery of the screw shaft threads a threaded part corresponding to the threaded part on the inner surface of both legs, and the screw shaft extends between these two legs. , in a coupling device in which the object to be attached is fixed by pressing the object to be attached with both legs whose lower portions are spread outward, respectively, and a connecting device having two legs each having a predetermined distance from each other along the axial direction on the outer surface of each of the legs. Two slit-shaped grooves separated from each other are formed to divide each of the leg bodies into three parts, and a screw is inserted between the slit-shaped grooves on the outer surface of the proximal end of the intermediate leg part along the width direction. A zigzag groove is formed, and each of the groove portions serves as a thin hinge portion.

[Effect]

The coupling device of the present invention has two slit-like grooves formed in both legs so that the legs can be connected to each other three times along the axial direction.
By forming a groove along the width direction in the proximal end of the intermediate leg that is divided and into which the screw is screwed, and making the outer groove part a thin hinge part, the hinge part has a hinge effect and Since the base edge of the outer surface of the intermediate leg is a free end and the intermediate leg is independent from both legs, only the intermediate leg can be opened wide when the screw is inserted. In addition, since a thin wall portion connecting the intermediate leg portion and both side leg portions is formed at the bottom of the slit-shaped groove, this thin wall portion prevents deformation of the intermediate leg portion when the screw is inserted, and the slit-shaped groove portion The groove provides a sinking effect and prevents the occurrence of sink marks. Furthermore, since the intermediate leg portion can be opened widely, the holding force between the object to be attached and the connector can be increased. Therefore, according to the coupling device of the present invention, even when connecting an attached object having a large attachment hole with respect to the screw used, the intermediate leg opens wide and the coupling tool can be firmly attached to the attached object. Therefore, the objects to be attached can be reliably connected to each other.

EXAMPLES Hereinafter, the present invention will be specifically explained with reference to examples, but the present invention is not limited to the following examples.

Embodiment FIGS. 1 to 4 show an embodiment of the present invention, in which the connector is integrally molded from flexible plastic. In addition, the first to
In FIG. 4, parts having the same configuration as those of the connectors in FIGS. 6 and 7 are given the same reference numerals, and their explanations will be omitted.

In the connector of this embodiment, two slit-like deep grooves 10, 10 are formed on the outer surfaces of both leg bodies 3, 3 along the axial direction, reaching from the outer surface to the vicinity of the inner surface, spaced apart from each other by a predetermined distance, As a result, both legs 3, 3 are each divided into three parts: an intermediate leg 3a existing between the grooves 10, 10, and one side leg 3b and other side leg 3c existing on both sides of this intermediate leg 3a. Moreover, as a result, the connecting portions 11, 11 between the intermediate leg portion 3a, the one side leg portion 3b, and the other side leg portion 3c.
Each of these is said to be thin.

Further, on the outer surface of the proximal end of both legs 3, 3, there is a square groove 1 extending along the width direction and reaching approximately the middle part in the thickness direction.
2 and 12 are formed, and the groove portion 12 forming portions are configured as thin hinge portions 13 and 13, respectively.

Note that triangular grooves 14 and 14 are provided along the axial direction in the central portions of the outer surfaces of the one side leg portion 3b and the other side leg portion 3c, respectively.
14 is formed. In addition, round grooves 15, 15 for inserting screw shaft portions are formed in the central portions of the inner surfaces of the intermediate leg portions 3a, 3a of the legs 3, 3, facing each other along the axial direction.

When using the above connector, first press the legs 3, 3 from the outside to bend them inward, and then
It is inserted into the oval mounting hole 5 of the object 4 to be attached, and the object 4 is brought into contact with the lower surface of the flange body 1, and the pressing force on the legs 3, 3 is released. As a result, both leg bodies 3, 3 elastically return to their original states, and the attached object 4
are supported on the proximal end sides of both leg bodies 3, 3 and temporarily fixed. On the other hand, the second object 7 is attached to its attachment hole 8.
is aligned with the screw insertion hole 2 of the flange body 1, and the shaft part 6a of the screw 6 is passed through the attachment hole 8 of the second attachment object 7 and the screw insertion hole 2 of the flange body in sequence, and both legs 3, 3 middle leg 3
The screw 6 is inserted between the round grooves 15 and 15 of a and 3a, and the screw 6 is rotated. As a result, the threaded portion 6b formed on the outer periphery of the screw shaft portion 6a spirally engraves the inner surface of the round grooves 15, 15, and the threaded portion 6b
A threaded portion corresponding to b is screwed into the inner surface of the round grooves 15, 15, and the round grooves 15, 1 of the screw shaft portion 6a.
The intermediate leg 3 of both leg bodies 3, 3 as it advances into the 5-space
The lower portions of a and 3a open outward, and these intermediate legs 3
By pressing the first object 4 with a and 3a, the object 4 is fixed to the connector, and thereby the objects 4 and 7 are connected to each other.

In this case, in this embodiment, slit-like grooves 10, 10 are formed on the outer surfaces of both leg bodies 3, 3, and both leg bodies 3, 3 are divided into intermediate leg part 3a and one side leg part 3b.
and the other side leg portion 3c, and a square groove portion 1 is provided on the outer surface of the proximal end of both intermediate leg portions 3a, 3a.
2, 12, and the base end portions are made into thin hinge parts 13, 13, the hinge parts 13, 1
3 is easy to bend, and the outer upper edges 3a', 3a' of the intermediate legs 3a, 3a are separated from the flange body 1 and become free, and the slit-shaped grooves 10, 10 allow the intermediate legs 3a to be attached to both side legs 3b. , 3c, and therefore only the intermediate leg portions 3a, 3a can easily open widely outward (in the direction of the arrow in FIG. 5). Therefore, even if the mounting hole 5 of the first object 4 is somewhat larger than the screw 6, the intermediate leg portions 3a,
3a follows this, and the outer surfaces of the leg portions 3a, 3a contact the peripheral wall of the mounting hole 5, so that the first and second objects 4, 7 can be connected to each other. Therefore,
It is possible to set a fairly large mounting hole for a small-diameter screw, and the intermediate legs 3a, 3a can be opened widely, so the holding force between the first attached object 4 and the intermediate legs 3a, 3a can be increased. Thus, the first and second attached objects 4 and 7 can be firmly connected to each other. In this case, when rotating the screw 6 to thread the threaded portions into the round grooves 15, 15, both legs 3,
However, in this connector, thin connecting portions 11, 11 are provided between the intermediate leg portion 3a and both side leg portions 3b, 3c. 11 prevents the intermediate leg portions 3a from moving in the width direction (in the direction of the arrow in FIG. 3), so that the intermediate leg portions 3a, 3a are
It is prevented from rotating together with the rotation of , so it does not rotate or deform. Therefore, Screw 6
As a result of the rotation, the threaded portions are reliably screwed into the inner surfaces of the round grooves 6, 6, the screw shaft portion 15 is reliably advanced between the round grooves 6, 6, and the objects 4, 7 to be attached by the legs 3, 3 are screwed.
Mutual connection is ensured. Furthermore, the slit-like grooves 10, 10 provide a sinking effect and prevent the occurrence of sink marks.

In the above embodiment, the flange body was formed into a rectangular plate shape, and each leg body was formed into a substantially semi-elliptical cross section. However, there is no restriction on the shape of the flange body or the leg body, and there is no limit to the shape of the flange body or the leg body. The shape can be set as appropriate depending on the shape and the like. Further, various changes may be made to other configurations without departing from the gist of the present invention.

[Effect of idea]

As explained above, the coupling device of the present invention has a large tolerance for the size of the mounting hole, and can reliably connect objects having mounting holes larger than the screw used.

[Brief explanation of drawings]

1 to 4 show an embodiment of the present invention, in which FIG. 1 is a plan view, FIG. 2 is a side view, FIG. 3 is a bottom view, and FIG. 5 is a sectional view showing a state in which objects to be attached are connected to each other using the same connector, and FIGS. 6 and 7 are examples of conventional connectors. FIG. 7 is a front view, FIG. 7 is a bottom view, and FIGS. 8 and 9 are sectional views showing a state in which the objects to be attached are connected to each other by the same connector. 1...Flange body, 2...Screw insertion hole,
3... Leg body, 10... Slit-shaped groove, 12...
Square groove part, 13...hinge part.

Claims (1)

[Scope of utility model registration request] A screw insertion hole is bored in the flange body, and two leg bodies are provided protruding from the outer peripheral edge of the lower end of the through hole, facing each other with a predetermined distance, and these legs are connected to the attachment hole of the object to be attached. , the object to be attached comes into contact with the lower surface of the flange body, the shaft portion of the screw enters between the two leg bodies through the screw insertion hole, and the screw is rotated to form a screw on the outer periphery of the screw shaft portion. By threading the threaded portion corresponding to the threaded portion on the inner surface of the both leg bodies and advancing the screw shaft portion between the two leg bodies, the above-mentioned two leg bodies with the lower portions thereof expanded outwardly. In a coupling device that fixes an object to be attached by pressing the object, two slit-shaped grooves are formed on the outer surface of each of the legs and spaced apart from each other by a predetermined distance along the axial direction. The body is divided into three parts, and a groove is formed along the width direction on the outer surface of the proximal end of the intermediate leg into which the screw is screwed between the two slit-shaped grooves, and the groove is connected to a thin hinge part. A connecting tool characterized by: