JP2010121759A - Coupling fixture - Google Patents

Abstract

Provided is a connection fixture that can reliably and firmly fix a connected body such as a pipe and is easy to use.
A coupling fixture for fixing a pair of coupled bodies, which are slidably inserted into one coupled body into another coupled body, and fixed at a desired position. A fixture main body 2 that is externally fitted to the coupling body, and a convex body 3 that is provided in the fixture main body 2 and is inserted into the fixing holes 38 and 39 formed in each of the coupled bodies. The fixture main body 2 is composed of a pair of fitting members 4 and 5 having one end portion rotatably connected and having fixing means that can be mutually fixed to the other end portion.
[Selection] Figure 1

Description

  The present invention relates to a connecting fixture that can fix, for example, a pair of pipes slidably inserted at desired positions.

  Conventionally, for example, the following types of connecting fixtures for pipes of this type exist. In other words, this conventional one has a C-shaped fixing body having elasticity, a connecting pin protruding from the center of the inner peripheral surface of the fixing body, and the fixing pin located on the back side of the connecting pin. And a knob portion protruding from the central portion of the outer peripheral surface of the tool body. Further, the fixture main body is configured to have a considerable elastic force so that the connection fixture does not inadvertently leave the pipe. Such a connection fixture is used when, for example, a pair of slidably connected pipes are fixed at a desired position.

In this case, the connecting pins are inserted into the through holes of the pipes while matching the positions of the through holes formed in the pipes and resisting the elastic force of the fixture body while maintaining this state. In a state where the pipe is firmly clamped by the elastic force of the fixture main body, both pipes are connected via a connecting pin. On the other hand, when removing the connecting fixture from the pipe, the connecting pin is removed from the through-hole of the pipe while picking the knob of the connecting pin while resisting the elastic force of the fixture main body (FIG. 1). 6).
JP 11-294688 A

  However, in the above conventional connecting fixture, since the fixture main body has a considerable elastic force, the work of attaching to and removing from the pipe is not easy, especially for elderly people and the like. For those with weak fingertips, it was very inconvenient.

  On the other hand, although it is possible to reduce the elastic force of the fixture main body, when configured in this way, for example, when an external force or the like acts on the coupling fixture, it is said that it will inadvertently leave the pipe. There are many fears, and sufficient safety cannot be secured. Such inconvenience is caused by using the elastic force of the fixture main body as a means for maintaining the insertion state of the connecting pin.

  Therefore, the present invention has been made in view of the above points, and an object of the present invention is to provide a connecting fixture that can reliably and firmly fix a connected body such as a pipe and has good usability. It is in.

  A connection fixture according to the present invention is a connection fixture for fixing a pair of connected bodies, which are slidably inserted into one connected body into another connected body, at a desired position. A fixture body that is externally fitted to the other connected body, and a convex body that is provided in the fixture body and is inserted into a fixing hole formed in each of the connected bodies, The fixture main body is composed of a pair of fitting members having one end portion rotatably connected and having fixing means that can be mutually fixed to the other end portion.

  When fixing a pair of connected bodies using such a connecting fixture, first, the other connected body is slid to a desired position so that the fixing holes of each connected body match. And the convex-shaped body of a connection fixing tool is penetrated to both fixing holes in the state which open | released the fitting member. Furthermore, after rotating to the to-be-connected body side so that each fitting member may be closed, it fixes by the fixing means. As a result of the sliding movement of the coupled body being restricted by the insertion of the convex body into the fixing hole, the insertion state of the convex body is maintained by the external fitting of the fixture main body to the coupled body. The to-be-connected body is securely and firmly fixed at a desired position.

  In addition, since the insertion of the convex body into the fixing hole can be performed with both fitting members open to each other, the fitting member may interfere with the insertion work of the convex body. There is nothing. Furthermore, since the insertion state of the convex body is maintained even if the operator removes his / her hand from the fixture main body, the subsequent operations of turning each fitting member and fixing by the fixing means are very easy. It can be carried out. Further, for example, even when an external force or the like is applied to the fixing tool main body and the fixing state by the fixing means is released, the insertion state of the convex body in the fixing hole is maintained. For this reason, the connecting fixture is not inadvertently detached from the connected body, and safety is ensured.

  On the other hand, when removing the connecting fixture from the connected body, after releasing the fixing by the fixing means, the fitting members are rotated so as to be in an open state, and the convex body is moved from the fixing hole of each connected body. Just leave. Also in this case, the fitting member does not interfere with the detaching operation of the convex body, and can be easily performed. For this reason, it is very convenient for the elderly and the handicapped who have weak fingertips.

  As described above, the connection fixture according to the present invention is different from the conventional one in that it is not externally fitted and fixed to the connected body by using the elastic force of each fitting member constituting the fixture body. The elastic force of the fitting member does not interfere with the insertion / removal operation between the convex body and the fixing hole.

  Further, one end portion of the fitting member may be rotatably connected by a connection pin, and the convex body may be provided inward on the inner peripheral surface of the fixture main body through the connection pin.

  In this case, since the convex body is arranged at the inward position of the fixture body, the fixture body is externally fitted to the connected body without causing the convex body to be exposed to the outside from the fixture body. be able to. Therefore, it is very useful for a to-be-connected body that requires appearance appearance.

  In addition, a groove is formed in the axial direction on the outer peripheral surface of the other connected body, and the engaging body can be engaged with the inner portion of the recessed groove when the fixture body is externally fitted to the connected body. It is also possible to provide a joint convex portion on the inner peripheral surface of each fitting member.

  According to this, since the engagement convex part of each fitting member engages with each inner side part of the ditch | groove of a to-be-connected body, the external fitting state to the to-be-connected body by a fixing tool main body is maintained further firmly. It becomes possible to do.

  The fixing means includes a locking hole provided in the other end portion of one fitting member and a locking projection provided in the other fitting member to be locked in the locking hole. May be.

  According to this, since the other end portion of each fitting member is securely fixed by locking the locking convex portion in the locking hole, the external fitting state to the connected body by the fixture main body is excellent. Maintained.

  Furthermore, you may make it connect the one end part of each said fitting member rotatably via the axial part provided in the convex-shaped body.

  According to this, since the above-described connection pins are not necessary, the number of parts can be reduced as a whole.

  In addition, a shaft portion provided on the convex body is rotatably attached to the other end portion of one fitting member, and the fixing means is engaged with the shaft portion of the convex body and the shaft portion. You may comprise from the latching | locking part provided in the other end part of the other fitting member.

  According to this, fixing of the fixture main body to the coupled body is performed by locking the locking portion of one fitting member to the shaft portion of the convex body. In this case as well, the number of parts can be reduced.

  Moreover, since the whole structure of the connection fixture according to the present invention is extremely simple, it can be manufactured easily and inexpensively.

  As described above, according to the connection fixture according to the present invention, a pair of connected bodies such as pipes can be securely and firmly fixed, and attachment / detachment work to / from the connected bodies can be performed extremely easily. For this reason, it is very useful for elderly people who have a weak grip and do not apply much force to their fingertips.

  Hereinafter, an embodiment of a connection fixture according to the present invention will be described with reference to the drawings.

<First Embodiment>
FIG. 1 shows a plan view of a connecting fixture 1 according to this embodiment. The connecting fixture 1 is provided with a substantially annular fixture body 2 that is externally fixed to a connected body such as a pipe, and an inward surface on the inner peripheral surface of the fixture body 2 so as to be disposed at the center of the fixture body 2. A pin-like convex body 3 is provided. In the present embodiment, the fixture main body 2 is made of synthetic resin, and the convex body 3 is made of metal. However, the specific material of each of these members is not limited to this. For example, it can be changed as appropriate according to the type and material of the object to be coupled, the required strength, and the like.

  The fixture main body 2 is composed of a pair of fitting members 4 and 5 each formed in a substantially C shape, and one end portions of the fitting members 4 and 5 are pin-connected to be rotatable. That is, as shown in FIG. 2, one end portion of each fitting member 4, 5 is provided with attachment portions 6, 7 that are arranged to face each other with a predetermined interval. With the attachment portion 7 of the other fitting member 5 disposed between the attachment portions 6, the metal connection pins 8 are inserted and connected to attachment holes (not shown) formed in the attachment portions 6 and 7. ing. Further, the connection pin 8 is inserted into the base end portion so that the base end portion of the convex body 3 is disposed between the attachment portions 7 of the other fitting member 5.

  Fixing means for fixing the other end portions to each other is provided at the other end portions of the fitting members 4 and 5. As shown in FIG. 3, the fixing means includes a locking hole 10 formed on the distal end side of the gripping piece 9 provided in one fitting member 4, and the other of the locking holes 10 to be locked in the locking hole 10. It is comprised from the latching convex part 11 protruding outwardly at the other end part of the fitting member 5. Further, on the inner peripheral surface of one fitting member 4 located on the base end side of the gripping piece 9 and the inner peripheral surface of the other end portion of the other fitting member 5, there are engagement convex portions 12 and 13, respectively. Is provided.

  Further, in a state where the locking projection 11 is locked in the locking hole 10, the tip of the convex body 3 is formed by the inner peripheral surface of the grip piece 9 and the tip surface of the other fitting member 5. It is comprised so that it may be distribute | arranged in the space part 14 to be performed. Also, except for the grip piece 9 of one fitting member 4, ribs 15 are formed outwardly on both sides of each fitting member 4, 5 as shown in FIGS.

  The connection fixture according to the present embodiment is configured as described above. Such a connection fixture 1 is used when, for example, one pipe slidably connected is fixed at a desired position. Such pipe structures are widely used for various products. For example, it is a cane, pipe furniture, a pipe for construction scaffolding, etc., but the connecting fixture 1 according to the present invention can be widely applied to these articles. Here, the chair which employ | adopted the said pipe structure for the leg as an example is demonstrated.

  As shown in FIG. 4, the chair 30 is a so-called shower bench that is assembled and belongs to a care product. The chair 30 includes an upper substantially flat seat portion 31, a seating seat 32 mounted on the seat portion 31, a backrest 33 provided on the back side of the seat portion 31, and downwards at four corners of the seat portion 31. These members are configured to be attachable to and detachable from the seat portion 31.

  The leg 34 is formed by slidably inserting a lower pipe 34b (hereinafter referred to as “lower pipe”) into an upper pipe 34a (hereinafter referred to as “upper pipe”). As shown in FIG. 5A, a concave groove 35 is provided along the axial direction on the outer peripheral surface of the upper pipe 34a, whereby a convex portion 36 is formed on the inner peripheral surface. The convex portion 36 is fitted in a concave groove 37 formed along the axial direction on the outer peripheral surface of the lower pipe 34b, and this serves as a guide when the lower pipe 34b slides.

  Further, a fixing hole 38 through which the convex body 3 can be inserted is formed in the lower side of the outer pipe 34a, and the fixing hole 38 is arranged at the center position of the concave groove 35. ing. On the other hand, a plurality of fixing holes 39 through which the convex body 3 can be inserted are also formed in the inner pipe 34b so as to penetrate in the axial direction with a predetermined interval. It is comprised so that it may be arranged.

  As shown in FIGS. 4 and 6, a protective ring 40 made of synthetic resin is attached to the lower end portion of the outer pipe 34a in order to cover the tip end surface thereof. A protective ring (not shown) is also attached to the upper end of the inner pipe 34b. Furthermore, a rubber anti-slip 41 is attached to the lower end of the inner pipe 34b.

  In assembling the leg portion 34 of the chair 30 having such a configuration, first, the inner pipe 34b is inserted into the outer pipe 34a, and the inner pipe 34b is slid so that the leg portion 34 has a desired length. . Then, as shown in FIG. 5 (a), in a state where the fixing holes 38, 39 of the pipes 34a, 34b are made to coincide with each other, the connecting fixtures are connected to the fixing holes 38, 39 while opening the fitting members 4, 5. 1 convex body 3 is inserted.

  In this case, since the convex portion 36 of the upper pipe 34a is fitted in the concave groove 37 of the lower pipe 34b, the positioning of the fixing holes 38 and 39 can be easily performed. In addition, the insertion state of the convex body 3 into each of the fixing holes 38 and 39 is maintained even if the operator removes his / her hand from the connection fixture 1, so that the inner pipe 34 b slides carelessly. Nor. Thus, since the operator does not need to hold the connection fixture 1, the next operation can be easily performed.

  That is, while rotating the other fitting member 5 to the outer pipe 34a side, one fitting member 4 is turned to the outer pipe 34a side. And when it presses a little so that the other end part side of each fitting member 4 and 5 may approach, the holding piece 9 provided in one fitting member 4 faces outward by the latching convex part 11 of the other fitting member 5 5A and 6B, the locking projection 11 is locked and fixed in the locking hole 10, as shown in FIGS. In this case, since the rib 15 is not provided on the grip portion 9, the locking projection 11 can be locked in the locking hole 10 relatively easily.

  As a result, the fixture main body 2 is securely fitted to the outer pipe 34a, and in this state, the engaging projections 12 and 13 provided on the inner peripheral surfaces of the other ends of the fitting members 4 and 5 are the outer pipe 34a. Since the convex body 3 is not detached from the fixing holes 38 and 39 in order to engage with the respective side portions of the concave groove 35, the connected state of both the pipes 34a and 34b can be maintained well.

  Further, for example, even when an external force or the like acts on the fixture main body 2 and the locking state between the locking hole 10 and the locking projection 11 is released, the convex body 3 to the fixing holes 38 and 39 is released. The insertion state is maintained. For this reason, as a result of avoiding a situation in which the connecting fixture 1 is carelessly detached from the leg portion 34, the safety of the chair 30 can be sufficiently ensured.

  Furthermore, since the convex body 3 is provided inwardly on the inner peripheral surface thereof to be arranged in the center of the fixture main body 2, the convex body 3 is not exposed to the outside from the fixture main body 2. The fixture main body 2 can be fitted onto the outer pipe 34a. For this reason, it is very useful for a to-be-connected body that requires an external appearance.

  On the other hand, for example, when the length of the leg portion 34 is adjusted or the chair 30 is disassembled, when the connecting fixture 1 is removed from the leg portion 34 of the chair 30, The holding part 9 is pressed outwardly to release the locking state between the locking hole 10 and the locking projection 11 of the other fitting member 5. Also in this case, since the holding part 9 does not have the rib 15, it can be bent comparatively easily. Thereafter, the convex body 3 of the connecting fixture 1 may be detached from the fixing holes 38 and 39 of the pipes 34a and 34b.

  As described above, the coupling fixture according to the present embodiment is basically fitted and fixed to the pipes 34 a and 34 b by using the elastic force of the fitting members 4 and 5 constituting the fixture body 2. Since it is not a thing, the elastic force of the fitting members 4 and 5 does not interfere with the insertion / removal work of the convex body 3 and the fixing holes 38 and 39 at all. For this reason, a series of attaching / detaching operations can be easily performed even by an elderly person or a disabled person.

<Second Embodiment>
In the first embodiment, the fitting members 4 and 5 of the fixture main body 2 are rotatably connected by the connection pins 8, and the convex body 3 is connected to the fixture main body via the connection pins 8. 2 is attached. However, the fitting members 4 and 5 can be pivotally connected by the convex body 3 as follows. According to this, since the connection pin 8 is not necessary, the number of parts can be reduced.

  That is, as shown in FIG. 7, in this embodiment, cylindrical portions 50 and 51 are provided at one end of each of the fitting members 4 and 5. The fixing means includes a locking projection 52 provided at the other end of one fitting member 4 and the other fitting to lock the locking projection 52 as shown in FIG. It is composed of a locking hole 53 provided at the other end of the combined member 5. Furthermore, the convex body 3 is formed in a substantially L-shape, and a shaft portion 54 provided at the base end portion thereof is inserted into the cylindrical portions 50 and 51 so that the fitting members 4 and 5 are rotated. It is connected freely. The shaft portion 54 is mounted on the inner surfaces of the cylindrical portions 50 and 51 through kerfs 55 and 56 formed in the axial direction.

  In this case, the tip end side of the convex body 3 is exposed outward from the fixture base 2, but in the same manner as in the first embodiment, the fitting members 4 and 5 are opened. If the convex body 3 is inserted into the fixing holes 38 and 39 of the pipes 334 a and 34 b, the fitting members 4 and 5 are closed in this state, and the locking projections 52 are locked to the locking holes 53. Good. Also in the present embodiment, the pipes 34a and 34b are firmly fixed at desired positions and can be easily attached and detached.

<Third Embodiment>
Further, as in the second embodiment, the convex body 3 is not configured as a connecting means for the fitting members 4 and 5, but is configured to function as a part of the fixing means for the fitting members 4 and 5. It is also possible to do. That is, in FIG. 8, a pair of cylindrical portions 60 and 61 are formed at one end of one fitting member 4 with a predetermined interval. Further, a connecting portion 62 interposed between the cylindrical portions 60 and 61 of the one fitting member 4 is provided at the center of one end portion of the other fitting member 5. Further, at both ends of the connecting portion 62, pins 63 that are inserted into the cylindrical portions 60 and 61 protrude in the width direction.

  In addition, cylindrical portions 64 and 65 are provided at the other end of the other fitting member 5 with a predetermined interval. The cylindrical portions 64 and 65 are rotatably mounted with a shaft portion 66 of the convex body 3 having the same configuration as that of the second embodiment. A locking portion 67 that can be locked to the shaft portion 66 of the convex body 3 is provided at the other end portion of the one fitting member 4, and a fixing means is constituted by these members.

  Also in the present embodiment, the tip end side of the convex body 3 is exposed outward from the fixture base 2, but the fitting members 4 and 5 are opened as in the above embodiments. In this state, the convex body 3 is inserted into the fixing holes 38 and 39 of the pipes 34a and 34b. In this state, the fitting members 4 and 5 are closed, and the locking portion 67 is connected to the shaft portion of the convex body 3. 66 may be locked. Also in this embodiment, each pipe 34a, 34b is firmly fixed at a desired position, and a series of attaching / detaching operations can be easily performed.

  Moreover, since the whole structure is very simple, the connection fixture 1 which concerns on each embodiment can also be manufactured easily and cheaply.

  In the above embodiment, the case where the pair of upper and lower pipes 34a and 34b is fixed as the connected body has been described, but the connected body to which the present invention is applicable is not limited to this. For example, the present invention can also be applied to a case where a solid rod-like body and a pipe that are slidably connected to each other are fixed at a predetermined position.

  Further, the shape of the fixture main body 2 can be arbitrarily changed according to the outer shape of the connected body to be externally fitted.

  Furthermore, in the said embodiment, although the engagement convex parts 12 and 13 engaged with each side part of the ditch | groove 35 of the outer pipe 34a were provided in the internal peripheral surface of each fitting member 4 and 5, this is covered. It may be provided as appropriate according to the shape of the coupling body, and may be omitted.

  In addition, the shape of the coupled body and the specific configuration of the fixing means can be arbitrarily changed within the intended scope of the present invention.

  As described above, the present invention is useful for a connection fixture that can fix a pair of connected bodies that are slidably connected to a desired position.

1 shows an embodiment according to the present invention and is a plan view of a connecting fixture. FIG. It is the principal part expanded side view. FIG. The chair which uses a connection fixing tool is shown, (a) is a front view, (b) is a side view. The use condition of a connection fixture is shown, (a) is a top view and (b) is a sectional view. FIG. The coupling fixture which concerns on 2nd Embodiment is shown, (a) is a perspective view, (b) is a side view. It is a perspective view which shows the connection fixing tool which concerns on 3rd Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Connection fixing tool 2 Fixing tool main body 3 Convex-shaped body 4, 5 Fitting member 8 Connection pin 10 Locking hole 11 Locking convex part 12, 13 Engaging convex part 35 Groove 38, 39 Fixed hole 54, 66 Shaft part 67 Locking part

Claims (6)

A connecting fixture for fixing a pair of connected bodies, which are slidably inserted into one connected body into another connected body, and fixed at a desired position,
A fixture body that is externally fitted to the other connected body;
A convex body provided in the fixture main body and inserted into a fixing hole formed in each of the coupled bodies;
The fixing fixture main body is composed of a pair of fitting members having one end portion rotatably connected and having fixing means that can be mutually fixed to the other end portion.   The end of the fitting member is pivotally connected by a connection pin, and the convex body is provided inwardly on the inner peripheral surface of the fixture body through the connection pin. Interlocking fixture.   A concave groove is formed in the axial direction on the outer peripheral surface of the other connected body, and when the fixture body is externally fitted to the connected body, the engagement can be engaged with the inner portion of the concave groove. The connecting fixture according to claim 1, wherein the convex portion is provided on an inner peripheral surface of each fitting member.   The fixing means comprises a locking hole provided in the other end of one fitting member, and a locking projection provided in the other fitting member to be locked in the locking hole. The connection fixture according to any one of 1 to 3.   The connection fixture according to claim 1, wherein one end portion of each fitting member is rotatably connected via a shaft portion provided on a convex body. A shaft portion provided on the convex body is rotatably attached to the other end portion of one fitting member, and the fixing means is connected to the shaft portion of the convex body and the other to be engaged with the shaft portion. The connecting fixture according to claim 1 or 3, comprising a locking portion provided at the other end of the fitting member.

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