WO2007080897A1

WO2007080897A1 - Extendable device

Info

Publication number: WO2007080897A1
Application number: PCT/JP2007/050178
Authority: WO
Inventors: Kenji Kushizaki; Kouichi Onoda; Kyohei Kita; Hideki Asada; Takayoshi Ueda
Original assignee: Sekisui Jushi Kabushiki Kaisha
Priority date: 2006-01-13
Filing date: 2007-01-10
Publication date: 2007-07-19
Also published as: JPWO2007080897A1; JP5205060B2

Abstract

An extendable device which is easily installable when installed between wall surfaces. The extendable device comprises an outer pipe (1) having one end brought into contact with one of the wall surfaces (W), an inner pipe (2) having one end inserted into the other end of the outer pipe (1) so as to be movable in the longitudinal direction and having the other end with a diameter smaller than the diameter of the outer pipe (1) in contact with the other of the wall surfaces (W), contact members (6) provided at the wall surface side end of at least one of these two pipes and abutting on the wall surface, an elastic body (25) installed between the contact member (6) and the pipe for movingly biasing the contact member (6) in the direction that they project toward the wall surface side relative to the pipe, and a fixing means (3) provided between the inner pipe (2) and the outer pipe (1) and stopping the longitudinal movement of the both pipes (1, 2).

Description

Telescopic device

Technical field

[0001] The present invention relates to expansion / contraction for hanging and placing articles such as clothing by spanning between a pair of left and right walls or a pair of upper and lower walls facing each other in the left-right direction or the up-down direction. It relates to the device.

Background art

[0002] In general, an elastic pole is known that connects two Neubs so as to be stretchable and hangs between a pair of opposing wall surfaces in order to hang clothes or the like (see, for example, Patent Document 1).

[0003] The telescopic pole is separated from an outer cylinder and an inner cylinder that are detachably inserted, a fixing screw that fixes the outer cylinder and the inner cylinder at an arbitrary position, and an axial center of the outer cylinder and the inner cylinder. First and second abutting bodies disposed at the outer end (wall side end), and between the first abutting body and the outer end (wall side end) of the inner cylinder. In addition to providing a screw mechanism that can adjust the axial distance between the first abutment body and the outer end (wall side end) of the inner cylinder by rotating the operating body, the outer end ( A panel mechanism with a compression panel is provided between the wall-side end) and the second contact body. As a result, after roughly adjusting the length of the telescopic pole to the interval between the wall surfaces, by adjusting the axial distance in the direction to increase the axial distance by the screw mechanism, the compression panel of the panel mechanism receives the reaction force from the wall surface. Since it is compressed and firmly attached between the wall surfaces by the repulsive force from the compression panel, the telescopic pole does not fall easily even when clothes are hung on it.

Patent Document 1: Japanese Registered Utility Model No. 3028704

[0004] However, the telescopic pole has the following problems. In other words, the procedure for attaching the telescopic pole between the wall surfaces is as follows. First, loosen the fixing screw to expand and contract the telescopic pole to make a rough adjustment to match the space between the wall surfaces, and then loosen the outer cylinder and the inner cylinder. It is fixed with screws, and finally, the repulsive force necessary for the compression panel of the panel mechanism is generated while adjusting the screw mechanism. When performing these installation work alone, first adjust the length of the pole by extending and retracting the telescopic pole, and then adjust both the outer and inner cylinders. Work that had to be fixed with fixing screws while supporting with hands was necessary, and it was difficult for one person. Also, at this stage, the telescopic pole is not fixed between the wall surfaces, so the mounting position on the wall surface is shifted by the desired mounting position force while the telescopic pole is supported and the fixing work is performed with the fixing screw. Sometimes it happened. In addition, since the screw mechanism must be adjusted with the other hand while the telescopic pole is supported with one hand after the fixing work with the fixing screw is completed, the repulsive force by the compression panel may be insufficient. When the telescopic pole becomes longer, there is a problem that the mounting operation becomes more difficult.

Disclosure of the invention

Problems to be solved by the invention

[0005] The present invention provides a telescopic device that solves the above-described problems and facilitates attachment work when attaching between wall surfaces.

Means for solving the problem

[0006] In order to solve the above-mentioned problem, the telescopic device of the present invention is a telescopic device interposed between a pair of left and right walls or a pair of upper and lower walls facing in the left-right direction or the up-down direction. An outer pipe whose one end is in contact with the outer pipe, and an inner pipe having a smaller diameter than the outer pipe in which the other end is inserted into the other end of the outer pipe so as to be movable in the longitudinal direction and the other end is in contact with the other wall surface. And an abutting member that abuts against the wall surface of at least one of the two pipes, and moves the abutting member in a direction that protrudes toward the wall surface with respect to the pipe. An elastic body provided between the corresponding contact member and the pipe for biasing, and a fixing means provided between the inner pipe and the outer pipe for preventing the movement of both pipes in the longitudinal direction. It is characterized by.

By extending the inner and outer pipes and pressing the contact member against the wall surface, the elastic body is compressed by the reaction force received by the wall surface force, so that the expansion device is stretched between the wall surfaces. be able to. Then, by fixing with the fixing means in this state, the expansion and contraction device can be fixed between the wall surfaces in the stretched state by preventing the movement of both pipes in the longitudinal direction.

[0007] The fixing means prevents movement of the pipes in the longitudinal direction by relative rotation of the pipes. A groove portion that gradually becomes deeper along the circumferential direction at the insertion side end portion of the inner pipe, a ring-shaped body that enters the groove portion and is partially opened in the circumferential direction, and the rib. A protrusion projecting toward the groove to receive the pressing force of the groove force by moving from the state to the shallow groove side and being provided at one end on the open side of the ring-shaped body; Power is made up of.

[0008] The second fixing means is provided separately from the fixing means, and the second fixing means is provided with an extension portion that is externally fitted to one end of the outer pipe and extends above the inner pipe. A cylindrical joint, and a fixing screw that fixes both pipes by screwing into a screw part provided in the extension part of the joint and pressing the outer surface of the inner pipe or screwing into the inner pipe. Good.

[0009] The contact member is externally fitted to one end of a cylindrical receiving portion having a partition portion at an intermediate portion, and a support portion for movably supporting the one pipe is provided at the other end of the receiving portion. Provided with a pressing portion for pressing the partition portion at the receiving portion side end of the pipe, and the pressing portion is formed on the contact member side of the receiving portion through a through hole formed in the partition portion at the center thereof. A shaft portion movable in the space to be formed is provided in a state protruding from the contact member side, and a coil panel constituting the elastic body is compressed on the shaft portion between the partition portion and the pressing portion. Put it on.

[0010] The pressing portion may be provided with an annular recess into which a part of the coil panel enters.

[0011] The support portion may be provided with a state in which the support portion protrudes inward at the pipe insertion end of the receiving portion, and may be configured by a flange portion that contacts the outer surface of the pipe.

[0012] The fixing means is attached to an opening formed in the outer pipe, and to the opening edge in such a manner that the base end portion can swing around a rotation axis that is parallel to the longitudinal direction of the pipe. A bar portion and a pressing portion provided in the lever portion for entering the inside of the outer pipe through the opening and pressing the inner pipe against the outer pipe by swinging the lever portion may be provided. .

[0013] The fixing means inserts an axial force into a gap formed between the inner surface of the outer pipe and the outer surface of the inner pipe at a central end where the wall side force of the outer pipe is also separated. A wedge member for fixing, and a wedge member for supporting the wedge member so as to be movable in the axial direction. For this purpose, a support member fixed to the outer pipe may be used.

[0014] The wall surface side ends of the two pipes are provided with the abutting member and the elastic body, and the one abutting member and the corresponding one end of the pipe are connected to each other. You may have a screw mechanism that can adjust the position of both in the axial direction!ヽ.

[0015] The screw mechanism includes a rotatable cylindrical body having a space in which one end is fixed to the contact member and one pipe is movably inserted at the other end, and the inside of the cylindrical body. And a shaft portion that is directed to the pipe side from the abutting member side, and a screw member that is provided at the pipe side end of the shaft portion, and can be screwed into the end portion of the one pipe. And a screwing member that is movable in the axial direction along with the rotation of the shaft portion.

The invention's effect

[0016] When installing the expansion / contraction device between the wall surfaces, the operator extends the outer pipe and the inner pipe to adjust the length of the expansion / contraction device to the length between the wall surfaces so as to contact the wall surfaces and further extend the wall. Thus, a pressing force is generated in the wall surface direction by the pressing member provided with the elastic body, and in this state, both pipes can be fixed by the fixing means. After this, even if the operator releases the hand, the telescopic device remains attached between the wall surfaces, and the expansion operation of the pipe that is difficult to cause the displacement of the telescopic device and the rotation of the screw mechanism at the end of the pipe Compared to a configuration that performs two operations, the installation work is also easier. In particular, when the telescopic device is relatively long, the mounting work is further facilitated compared to the conventional case.

[0017] The fixing means is means for preventing the movement of both pipes in the longitudinal direction by relative rotation of the two pipes, and gradually becomes deeper along the circumferential direction at the insertion side end of the inner pipe. A groove part, a ring-like body that enters the groove part and is partially open in the circumferential direction, and is provided at one end on the open side of the ring-like body, and is located on the deepest groove part side, from a shallow state If the projecting part and the force projecting to the groove part side are configured to move to the groove part side and receive the pressing force of the groove part force, the projecting part of the ring-shaped body can be moved by rotating at least one of the pipes. Then, the groove moves from the deepest part to the shallowest part, the ring-shaped body bites between the outer pipe and the inner nove, and if at least one of the pipes is further rotated, the biting force increases. Both pipes are fixed. With the inner and outer pipes held in this extended state, that is, without changing hands, Since both pipes can be fixed simply by rotating at least one of the eve or the outer pipe (no more than one rotation), the fixing work of both pipes is further facilitated.

[0018] A second fixing means different from the fixing means is provided, and the second fixing means is provided with an extension part that is externally fitted to one end of the outer pipe and extends upward of the inner pipe. A cylindrical joint, and a fixing screw that fixes both pipes by screwing into a screw part provided in the extension part of the joint and pressing the outer surface of the inner pipe or screwing into the inner pipe. If the fixing means is released, the second fixing means can securely hold the telescopic device in a stretched state between the wall surfaces.

V, a telescopic device can be obtained.

[0019] The contact member is externally fitted to one end of a cylindrical receiving portion having a partition portion at an intermediate portion, and a support portion for movably supporting the one pipe is provided at the other end of the receiving portion. Provided with a pressing portion for pressing the partition portion at the receiving portion side end of the pipe, and the pressing portion is formed on the contact member side of the receiving portion through a through hole formed in the partition portion at the center thereof. A shaft portion movable in the space to be formed is provided in a state protruding from the contact member side, and a coil panel constituting the elastic body is compressed on the shaft portion between the partition portion and the pressing portion. When externally mounted, the pipe that moves in the axial direction can be stably supported at two locations: the support part at the other end of the receiving part and the through hole in the partition part at the intermediate part of the receiving part. High value

V, a telescopic device can be obtained.

[0020] When an annular recess into which a part of the coil panel enters is provided in the direction from the pressing surface of the pressing part toward the non-pressing side, a part of the outer peripheral part of the coil panel is supported by the recess. Therefore, it is not necessary to provide a special support structure for the coil panel that does not cause large displacement of the coil panel, and there is an advantage that the coil panel can be easily and quickly installed.

[0021] In the case where the support portion is provided in a state of projecting inwardly at the pipe insertion end of the receiving portion and is configured from a flange portion that contacts the outer surface of the pipe, the contact resistance accompanying the movement of the pipe is kept small. Also, the pipe moving at the flange portion can be supported.

[0022] The fixing means has an opening formed in the outer pipe, and a base end portion of the opening edge has a pipe length. A part of the lever attached in a swingable manner around a pivot axis that is parallel to the hand direction, and by swinging the lever part, it enters the inner part of the outer pipe through the opening. And a pressing part provided in the lever part to press the inner pipe against the outer pipe, the lever part is swung so that the pressing part of the lever part passes through the opening of the outer pipe. Both pipes can be fixed by pressing the outer surface of the inner pipe at the same time. In this way, while holding the outer pipe near the lever with one hand and supporting the other inner pipe with the other hand, extend both pipes and adjust the expansion device to the length between the wall surfaces. Next, a pressing force is generated in the direction of the wall surface by the pressing member, and by further operating the lever portion, the pressing portion of the lever portion presses the outer surface of the inner pipe, so that both pipes are placed at arbitrary positions. After this, even if the operator removes his / her hand, the telescopic device is attached between the wall surfaces, and the mounting work in which the positional displacement of the telescopic device hardly occurs is easy.

[0023] The fixing means inserts an axial force into a gap formed between the inner surface of the outer pipe and the outer surface of the inner pipe at the center end where the wall surface side force of the outer pipe is also separated to fix both of them. A wedge member, and a support member fixed to the outer pipe to support the wedge member so as to be movable in the axial direction, the wedge member is connected to the outer surface of the inner pipe and the outer pipe. Both pipes can be fixed simply by inserting into the gap formed between the inner surface of the pipe. In this way, holding one pipe near the wedge member with one hand and supporting the other pipe with the other hand, the pipe is extended to adjust the telescopic device to the length between the wall surfaces. The two pipes can be fixed at any position by causing them to contact each other, subsequently generating a pressing force in the wall surface direction by the pressing member, and further inserting the wedge member. Even if a person releases his / her hand, the telescopic device is attached between the wall surfaces, and it is easy to attach the telescopic device so that the positional displacement of the telescopic device hardly occurs.

[0024] The wall surface side ends of both pipes are provided with the abutting member and the elastic body, and the one abutting member and the corresponding one end of the pipe are connected to each other. When a screw mechanism that can adjust the positions of the two members in the axial direction is provided, even after the telescopic device is fixed, the screw mechanism causes one abutting member and the corresponding end of one nove to By changing the position, it is possible to provide a high-value expansion / contraction device that can adjust the pressing force in the wall surface direction by the pressing member.

[0025] The screw mechanism includes a rotatable cylindrical body having a space in which one end is fixed to the contact member and one pipe is movably inserted at the other end, and the inside of the cylindrical body. And a shaft portion that is directed to the pipe side from the abutting member side, and a screw member that is provided at the pipe side end of the shaft portion, and can be screwed into the end portion of the one pipe. And the screw member that is movable in the axial direction along with the rotation of the shaft portion, the pressing force in the wall surface direction is adjusted by the pressing member only by rotating the cylindrical body. This is advantageous in terms of operation.

Brief Description of Drawings

FIG. 1 is a front view showing a first telescopic device according to the present invention, in a state of being stretched between wall surfaces.

2 is an enlarged longitudinal sectional view showing the configuration of the fixing means shown in FIG.

FIG. 3 is a cross-sectional view taken along line A—A in FIG. 1. (a) shows a state immediately before the outer pipe is rotated, and (b) shows a state after the outer pipe is rotated by a predetermined angle. .

4 is an enlarged longitudinal sectional view showing the configuration of the second fixing means of FIG.

FIG. 5 is an enlarged longitudinal sectional view showing the configuration of the first receiving part in FIG. 1.

6 is an enlarged longitudinal sectional view showing the configuration of the second receiving part in FIG. 1.

[FIG. 7] (a) is an enlarged vertical sectional view showing a state in which the contact member is pressed against the wall surface at the second receiving portion, and (b) is a state operation of (a) that also rotates the second receiving portion. It is an enlarged vertical sectional view showing the state.

FIG. 8 is an enlarged longitudinal sectional view showing a configuration of second fixing means.

FIG. 9 is an enlarged longitudinal sectional view showing the configuration of the third fixing means, (a) shows the state before fixing.

, (B) shows the state after fixation.

FIG. 10 is an enlarged longitudinal sectional view showing a configuration of a fourth fixing means.

FIG. 11 is an exploded perspective view showing a configuration of a second receiving portion of another configuration.

FIG. 12 is a perspective view showing a second telescopic device.

FIG. 13 is a front view in which two first telescopic devices are attached between vertical wall surfaces. FIG. 14 is a side view of FIG.

[FIG. 15] (a) is a cross-sectional view taken along line BB in FIG. 13, and (b) is a cross-sectional view taken along line CC in FIG.

Explanation of symbols

[0027] 1 outer pipe, 1K opening, 2 inner pipe, 2A base, 3 fixing means, 4 first receiving part, 5 second receiving part (cylindrical member), 5A protrusion, 5B wall surface side part (connecting part) , 6 Abutting member, 6 A circumferential groove, 7, 8 connecting member, 7A, 8A cylindrical part, 7B bottomed cylindrical part, 10 stopper member, 11 body part, 12 groove part, 12A step part, 13 insertion part , 14 Ring-shaped body, 15 Protruding part, 15A Open end face, 16 Second fixing means, 16A extension part, 16B joint, 17 Screw part, 18 Fixing screw, 19 Shelf, 19A Support member, 19B Pipe material, 19a , 19b Pipe, 20 Operating handle, 21 Pressing part, 23 Shaft part, 23A Screw part, 24 Body part, 24A Recessed part, 25 Coil panel, 31 Pressing part, 32 Ring projection, 33 Female thread part, 41 Cylindrical part (supporting part) , 41 F Flange, 42 Internal space, 43 Partition, 44 Through hole, 45 Washer, 46 Vis, 47 Cylindrical part, 46T, 48 Engagement ridge, 51 Washer, 52 Space, 53 Step part, 54 Shaft part, 54A Screw hole, 55 Bottom plate part, 56 Coil panel, 57 Through hole, 58 Male thread material, 59 Screw member, 61 Elastic member, 61A Engagement protrusion, 62 Bottom surface, 63 Circumferential groove, 72 Cylindrical shape Body, 72A female screw hole, 73 cut, 78 lever part, 79 pressing part, 80 gap, 81 wedge part material, 81A operation part, 82 support member, 83 opening, A shelf board, B shelf board, N screw mechanism, P pin , PI, P2 telescopic device, S space, W wall surface, W1 floor surface (ceiling surface),

BEST MODE FOR CARRYING OUT THE INVENTION

Next, the best mode for carrying out the present invention will be specifically described with reference to the drawings.

FIG. 1 shows a state where the telescopic device P1 is stretched between a pair of left and right wall surfaces W and W facing each other in the left-right direction.

In FIG. 1, 1 is a cylindrical outer pipe, 2 is a cylindrical inner pipe having a smaller inner diameter than the outer pipe 1 inserted into the outer pipe 1, and 3 is an inner pipe 2 with respect to the outer pipe 1. Fixing means, 4 is a first receiving portion provided at the end of the inner pipe 2 on the wall surface W side, 5 is a second receiving portion provided at an end portion of the outer pipe 1 wall surface W side, 6 Is a contact member attached between the receiving parts 4 and 5 and the wall surfaces W and W, respectively, and the telescopic device P1 and FIG. The expansion and contraction device P2 shown in FIG. 1 includes the outer pipe 1, the inner pipe 2, the fixing means 3, the receiving portions 4 and 5, and the contact members 6 and 6 as main components, but the receiving portions 4 and 5 and the contact member 6 and 6 together can be a thing! /.

[0029] First, the telescopic device P1 attached between the wall surfaces W shown in FIG. 1 is connected to the outer pipe 1 and the inner pipe 2 with the inner noise 2 being movably inserted into the outer pipe 1. The fixing means 3 for fixing the inner pipe to the outer pipe 1 is provided at the insertion end of the inner pipe 2 and the connecting end of the outer pipe 1.

[0030] Note that the opposing wall surfaces W generally indicate only a pair of vertical wall surfaces that are erected from the floor surface, rather than column surfaces and wall surfaces erected from the floor surface, or column surfaces and column surfaces. Furthermore, as shown in FIG. 12, the relationship between the floor surface W1 and the ceiling surface W1 is also included.

[0031] The outer pipe 1 and the inner noop 2 are generally composed of a force S which is a metal such as iron, steel, stainless steel, and aluminum formed into a pipe shape, and a combination of these metals. However, pipes whose surfaces are covered with a synthetic resin or the like, or in some cases a hard synthetic resin or the like can be used as appropriate depending on the required length and strength. Further, the outer pipe 1 and the inner pipe 2 are preferably cylindrical, but may be oval or rectangular.

[0032] As shown in Fig. 2 and Fig. 3 (a), (b), the fixing means 3 is means for preventing the movement of the pipes 1, 2 in the longitudinal direction by the relative rotation of the pipes 1, 2. A stopper member 10 made of rubber or synthetic resin having a main body portion 11 inserted into the insertion side end portion of the inner pipe 2 and partially protruding in the axial direction, and a main body of the stopper member 10 Rubber or synthetic resin that enters the groove 12 that gradually becomes deeper along the circumferential direction of the portion 11 in the axial direction of the portion 11 and that is partially opened in the circumferential direction and is fixed to the inner peripheral surface of the outer pipe 1 The ring-shaped body 14 is formed on the open side of the ring-shaped body 14 and is positioned on the deepest groove portion side, moving from the shallow state to the groove portion side and pressing force from the groove portion 12 In order to receive, it is comprised from the protrusion part 15 which protrudes in the groove part side. The stopper member 10 includes a cylindrical insertion portion 13 to be inserted into the insertion side end portion of the inner pipe 2, and a slightly larger diameter than the outer diameter of the insertion portion 13, and the inner diameter of the outer pipe 1 The main body portion 11 is configured to have a smaller diameter, and the groove portion 12 is formed at a substantially central portion in the axial direction of the main body portion 11. Therefore, for example, by rotating the outer pipe 1 (the inner pipe 2 or the inner and outer pipes 1 and 2 may be rotated relative to each other), the ring-shaped body 14 positioned at the deepest part of the groove 12 protrudes. When the portion 15 moves toward the shallowest portion, the ring-shaped body 14 is bitten between the outer pipe and the stopper member 10, and the outer pipe 1 is further rotated. 3 As shown in (b), the biting force is increased and both pipes 1 and 2 can be fixed. In this way, it is necessary to rotate at least one of the inner pipe and the outer pipe while keeping the inner and outer noises extended, that is, without changing hands. Since both pipes can be fixed, the fixing work of both pipes is further facilitated. By configuring the stopper member 10 to have a hollow cylindrical body force, the stopper member 10 can be easily deformed, so that the ring-shaped body 14 can easily bite between the outer pipe and the stopper member 10. Let's make sure that the pipe can be fixed with a small operating force.

[0033] By forming the groove portion 12 so as to be gradually deeper in the circumferential direction, as shown in FIGS. 3 (a) and 3 (b), the boundary portion between the deepest portion and the shallowest portion of the groove portion 12 is formed. A step 12A is formed, and the step 12A and the open end surface 15A of the projection 15 are in contact with each other, so that the state force in FIG. It is also possible to configure so that 2 cannot be rotated, and a force is applied so that the rotation direction to be fixed is immediately divided. Further, the protrusion 15 may be configured to bite into the groove 12, or the protrusion 15 may be omitted and the groove 12 may be bitten into the ring-shaped body 14.

[0034] The second fixing means 16 different from the fixing means 3 may be provided. That is, as shown in FIG. 4, the second fixing means 16 is fitted to one end of the outer pipe 1 and at the same time is fixed by an adhesive or welding, and extends to the upper side of the inner pipe 2. Screwed into a cylindrical joint 16B provided with a screw part 17 formed in a direction orthogonal to the axial direction provided in the extending part 16A of the joint 16B and then pressed against the outer surface of the inner pipe 2. It consists of a fixing screw 18 that fixes both pipes 1 and 2 by contacting or screwing into the inner pipe 2 so that both pipes 1 and 2 can be securely fixed. The joint 16B has a fixed portion having an inner diameter dimension that can be fitted to the outer pipe 1 and the force of the fixed portion on the inner pipe 2. The extension portion 16A extending in the direction is in force, and the inner diameter of the extension portion 16A is made smaller than the inner diameter of the outer pipe 1.

[0035] As shown in FIG. 5, the first receiving portion 4 is formed of a cylindrical member provided with a partition portion 43 in the middle portion in the longitudinal direction (the center portion in the figure). The abutting member 6 is inserted into the small-diameter cylindrical portion 47 located on the wall W side with the inner pipe 2 in the internal space 42 of the large-diameter cylindrical portion 41 spaced from the wall W across the partition 43. As an elastic body for inserting and abutting one end of the inner pipe 2 between the inserted inner pipe 2 and the partition portion 43, the contact member 6 is moved and urged toward the wall W side with respect to the inner pipe 2. The coil panel 25 is provided. The cylindrical part 41 constitutes a support part for movably supporting the inner pipe 2, and the support part 41 is provided in a state of projecting inwardly at the noise insertion end of the first receiving part 4. It consists of a flange part 41F that contacts the outer surface of

[0036] Further, a pressing portion 21 for pressing the partition portion 43 is provided at the receiving portion side end of the inner pipe 2, and the pressing portion 21 is a through-hole formed at the center of the partition portion 43 at the center thereof. A shaft portion 23 movable in the space S formed on the abutting member 6 side of the first receiving portion 4 through the hole 44 is provided in a state of projecting to the abutting member 6 side. The coil panel 25 is packaged in a compressed state between the partition part 43 and the pressing part 21. The pressing portion 21 includes a main body portion 24 that is inserted into the receiving portion side end of the inner pipe 2 and the shaft portion 23 that protrudes integrally from the central portion of the main body portion 24.

[0037] By providing the pressing portion 21 with an annular concave portion 24A into which a part of the coil panel enters, the dimension of the first receiving portion 4 in the axial direction that can only position the coil panel 25 can be shortened. In this way, there is no recess 24A.

[0038] A washer 45 having an outer diameter larger than the through hole 44 is applied to the tip of the shaft portion 23 from the side surface of the abutting member 6 of the partition portion 43, and a screw 46 passed through the washer 45 is provided. The shaft portion 23 is prevented from being removed from the through hole 44 by screwing and fixing the tip end to a screw portion 23A formed on the shaft portion 23. Accordingly, the restoring force of the coil panel 25 allows the abutting member 6 to be projected and biased to a predetermined position with respect to the inner pipe 2 as shown in FIG. 5, and the abutting member 6 is brought into contact with the wall surface W. When the inner pipe 2 is moved from the state to the wall surface W side, the coil panel 25 is contracted, and the restoring force of the coil panel 25 is applied to the contact member 6. As a result, a pressing force by the contact member 6 is generated on the wall surface W side.

[0039] On the outer surface of the cylindrical portion 47, there is an engagement protrusion 48 that engages with a circumferential groove 63 formed on the inner surface of the contact member 6 when the contact member 6 is externally fitted to the cylindrical portion 47. Is formed. When the cylindrical portion 47 is inserted into the concave portion of the contact member 6 and the tip of the cylindrical portion 47 comes into contact with the bottom surface 62 of the concave portion, the circumferential groove 63 and the engaging protrusion 48 are engaged. Yes. As a result, the first receiving portion 4 is not inadvertently detached from the contact member 6.

[0040] A sheet-like elastic member 61 is provided on the wall surface side of the contact member 6, and is in contact with the wall surface W via the elastic member 61. The elastic member 61 is provided with a large number of engaging protrusions 61A that engage with the main body of the abutting member 6, so that the elastic member 61 is not inadvertently positioned with respect to the main body. Talk!

[0041] The one abutting member 6 and the end of one pipe (outer pipe 1) corresponding to the one abutting member 6 are connected, and a screw mechanism N capable of adjusting both positions in the axial direction is provided. The screw mechanism N will be described with reference to FIG.

In other words, the screw mechanism N has the second receiving portion as a rotatable cylindrical body having a space in which one end is fixed to the contact member 6 and the outer pipe 1 is movably inserted at the other end. 5 and the second receiving part 5 are provided so as to be rotatable integrally with each other, and are provided with a counter force shaft part 54 from the contact member 6 side to the pipe 1 side, and at the pipe 1 side end of the shaft part 54. From a pressing portion 31 as a screwing member that can be screwed to a male screw member 58 that is a screw member and is fixed to an end portion of the outer pipe 1 and movable in the axial direction as the shaft portion 54 rotates. It is composed. The second receiving part 5 has a structure similar to that of the first receiving part 4. That is, the second receiving part 5 is composed of a cylindrical member (cylindrical body) that is rotatable and provided with a space in which the outer pipe 1 is movably inserted. The pressing portion 31 is inserted. In addition, a contact member 6 is attached to the end of the second receiving portion 5 on the wall surface side. A sheet-like elastic member 61 is attached to the wall surface side of the contact member 6 and is in contact with the wall surface W via the elastic member 61.

[0042] The pressing portion 31 is formed of a cylindrical member, and on the wall surface W side thereof, an inner fitting portion fitted into the outer pipe 1 and an outer diameter dimension larger than that of the inner fitting portion. It is composed of an annular protrusion 32 that protrudes outward in the axial direction and has the same outer diameter as the outer diameter. Ring The step portion formed at the boundary between the protrusion 32 and the inner fitting portion prevents the pressing portion 31 from entering the inner portion of the outer pipe 1 more than necessary. Further, on the inner surface on the wall surface side of the pressing portion 31, there is formed a female screw portion 33 into which a male screw material 58 having a screw portion formed on the outer surface can be screwed.

[0043] The receiving portion 5 is formed in a bottomed cylindrical shape having a step portion 53 at a longitudinal intermediate portion where the outer pipe 1 insertion end is opened, and the outer pipe extends from the step portion 53 to the outer pipe 1 insertion end. It is formed in a space 52 for fitting 1 into the slide itself, and the opening is formed smaller on the wall surface side than the step portion 53. As a result, the pressing portion 31 cannot enter further than the step portion 53. A shaft portion 54 extending on the shaft at the center in the radial direction is provided on the bottom plate portion 55 of the receiving portion 5 so as to protrude to the outer pipe 1 side. The shaft portion 54 is covered with a coil panel 56, and further, the free end portion side end (side end where the wall surface force is separated) of the shaft portion 54 is inserted into a through hole 57 formed at the center of the male screw material 58. As described above, the tip of the screw member 59 is screwed into the screw hole 54A of the shaft portion 54 through the washer 51 to prevent the outer pipe 1 and the shaft portion 54 from coming off. In the present embodiment, the shaft portion 54 and the through hole 57 are formed to have a square cross-sectional shape, so that the shaft portion 54 does not rotate around the axial direction with respect to the through hole 57. Yes. The shapes of the shaft portion 54 and the through hole 57 are not limited to a square shape, and the through hole 57 may be a polygonal shape such as a triangle or a pentagon, or an elliptical shape as long as it does not rotate in the axial direction.

[0044] When the pressing portion 31 configured as described above is caused to enter the wall surface side of the space 52 of the second receiving portion 5 in a state where the contact member 6 is in contact with the wall surface W, the coil panel 56 contracts. In response to this contraction, a pressing force is generated on the wall surface W side! /, (See Fig. 7 (a)).

[0045] As described above, since the male screw member 58 of the second receiving part 5 is screwed with the female screw part 33 of the pressing part 31, when the second receiving part 5 is rotated in the axial direction, the shaft Since the male screw member 58 is similarly rotated through the portion 54, the male screw member 58 can be moved back and forth in the length direction with respect to the pressing portion 31. Further, by rotating the second receiving part 5 from the pressed state of FIG. 7 (a), the pressing part 31 moves the insertion position of the second receiving part 5 into the space 52 to the side where the wall force is also separated. As a result, the pressing force toward the other wall surface W increases, and the reaction force is transmitted to the outer pipe 1 via the inner pipe 2, and the pressing portion together with the outer pipe 1 toward the wall surface W indicated by the arrow in FIG. 31 and male As the screw material 58 moves, the coil panel 56 further contracts, and the pressing force increases toward the wall surface W in accordance with the contraction. Note that a large number of protrusions 5A along the length direction are formed on the outer surface of the second receiving portion 5 at predetermined intervals in the circumferential direction. As a result, the operator can put his finger between the protrusions 5A when rotating the second receiving part 5, and can reliably rotate the second receiving part 5 without sliding. it can.

[0046] Further, the wall surface side portion 5B from the step portion 53 of the second receiving portion 5 is configured as a connecting portion that can be externally fitted through the concave portion of the contact member 6 in the same manner as the first receiving portion 4. is doing. Further, an engaging protrusion 46T is formed on the outer surface of the connecting portion 5B of the second receiving portion 5 along the circumferential direction to engage with the circumferential groove 6A formed in the abutting member 6. Similarly, the second receiving part 5 is also prevented from being inadvertently detached from the contact member 6. A sheet-like elastic member 61 is attached to the wall surface side of the abutting member 6 so as to be in contact with the wall surface W via the elastic member 61.

The fixing means 3 is not limited to the configuration shown in FIG. 2 and FIGS. 3 (a) and 3 (b). For example, the fixing means 3 shown in FIG. 8 includes a conical base 2A projecting so as to taper toward the distal end side of the outer pipe 1 insertion side end of the inner pipe 2, and an inner surface of the outer pipe 1. The inner pipe 2 and the cylindrical body 72 having substantially the same diameter are fixed. On the surface of the base portion 2A, a male screw is formed to be screwed into a female screw hole 72A formed in the length direction of the cylindrical body 72, and the screwing start end is provided at one circumferential position of the cylindrical body 72 (may be a plurality of positions). A cut 73 along the length direction is formed in a range from the portion to the front end of the screwing end. As a result, when the inner pipe 2 is rotated in the direction in which the base 2A enters the cylindrical body 72, the cylindrical body 72 is pushed and spread from the screwing start end side thereof, and the inner surface of the outer pipe 1 is When abutted and further rotated, the cylindrical body 72 is pressed against the outer pipe 1 via the base 2A, and the outer pipe 1 and the inner pipe 2 are fixed.

In FIGS. 9 (a) and 9 (b), the fixing means 3 includes an opening 1K formed in the outer pipe 1 and a pin P whose base end is parallel to the longitudinal direction of the opening at the opening edge. 9 and the lever 78 attached in a swingable manner around the pivot axis, and the lever 78 is swung from the state shown in FIG. 9 (a) through the opening 1K. The lever portion 78 is inserted into the outer pipe 1 to press the inner pipe 2 against the outer pipe 1 (see FIG. 9 (b)). And an arcuate pressing portion 79 provided in the above.

Further, as shown in FIG. 10, the fixing means 3 has an inner pipe inserted into the inner surface of the outer pipe 1 and the outer pipe 1 at a central end spaced from the wall surface side of the outer pipe 1. A wedge member 81 for entering and fixing the gap 80 formed between the outer surface and the outer surface of the outer member 1 in the axial direction, and the outer pipe 1 for supporting the wedge member 81 movably in the axial direction. It is composed of a fixed support member 82. The support member 82 is configured in a box shape, and a wedge member 81 is accommodated therein, and an operation portion 81A of the wedge member 81 is projected to the outside of the support member 82 through an opening 83 formed in the support member 82. By moving the operation part 81A in the length direction of the pipe, it is possible to switch between the fixed position where the pipes 1 and 2 are fixed by entering the gap 80 and the non-fixed position released from the gap 80. It has become. In addition, 1T shown in FIG. 9 is a protrusion provided along the circumferential direction provided on the inner surface of the outer pipe 1 in order to maintain the gap 80 between the outer pipe 1 and the inner pipe 2. A plurality may be provided in a circumferentially continuous state or at a predetermined interval.

[0050] In the present embodiment, the force in which the second receiving part 5 is attached to the outer pipe 1 side and the first receiving part 4 having a different configuration is attached to the inner pipe 2 side. These two receiving parts The mounting relationship between the two pipes may be reversed, or the first receiving part 4 or the second receiving part 5 may be attached to only one pipe.

[0051] Next, a method of attaching the expansion / contraction device P1 shown in Figs. 1 to 7 will be described. First, while the outer pipe 1 and the inner pipe 2 are gripped with one hand and extended while being positioned between the mounting walls, the abutting members 6 and 6 at the left and right ends of the telescopic device P1 are moved to the wall W. , Contact W. At this stage, the outer pipe 1 and the inner pipe 2 are not fixed. Subsequently, when the inner pipe 2 is further extended with respect to the outer pipe 1, the pressing portion 21 together with the inner pipe 2 is moved toward the contact member 6 side of the inner space 42 of the receiving portion 4 in the first receiving portion 4. Since the coil panel 25 is moved, the coil panel 25 is contracted, and a pressing force is generated in the wall surface W direction due to the contraction of the coil panel 25, so that the reaction force is transmitted to the other coil panel 56. Due to the shrinkage, it is also distributed in the direction of the other wall W, generating a pressing force. At this time, the tip of the pressing part 21 is brought into contact with the partition part 43 of the first receiving part 4. If the expansion and contraction device PI is not supported and the pressure is high enough to be attached between the walls w, the operator can recognize it and immediately recognize the same pressure regardless of the operator. Can be generated. It is also possible to mark the inner nove 2 with a mark so that the required amount of movement can be recognized by the appearance.

[0052] When the pressing force is generated in the wall surface W direction as described above, the state is maintained using the fixing means 3, so that the expansion device P1 is kept stretched between the wall surfaces W and W. It has become possible to let you. That is, by rotating the outer pipe 1 relative to the inner pipe 2, the projecting portion 15 of the ring-shaped body 14 is moved from the deepest portion of the groove portion 12 of the main body portion 11 toward the shallowest portion. At this time, the projecting portion 15 of the ring-shaped body 14 bites into the groove 12, so that the ring-shaped body 14 is pressed against the inner wall surface of the outer pipe 1, and when the outer pipe 1 is further rotated, the degree of biting increases. As a result, the outer pipe 1 and the inner noise 2 can be fixed. In other words, with the outer pipe 1 and the inner pipe 2 held with one hand each, if the outer pipe 1 is rotated with respect to the inner pipe 2, it is fixed. The telescopic device P1, which is fixed in the stretched state, does not fall easily and becomes a state. Once fixed, the fixing means 18 is then released by, for example, fixing the outer pipe 1 and the inner pipe 2 firmly by screwing the fixing screw 18 as the second fixing means. There is an advantage that the expansion device P1 can be maintained in a state where it does not fall.

[0053] In order to attach the expansion device P1 fixed in a stretched state between the wall surfaces W and W as described above more firmly between the wall surfaces W and W, by rotating the second receiving portion 5, The male thread material 58 of the pressing part 31 is rotated together. The rotational force is converted into a moving force that moves the pressing part 31 in the non-rotatable state in the axial direction, and the pressing part 31 moves in the direction opposite to the wall W side (the direction away from it) (see Fig. 7 (b)). . Along with this, the outer pipe 1 moves toward the other wall surface W by the reaction force received from the other wall surface W, so that the outer pipe 1 moves again toward the one wall surface W (see the arrow shown in FIG. 7 (b)). The coil panel 56 contracts. Due to the contraction of the coil panel 56, an increased pressing force is generated on both wall surfaces W and W. At this time, since the telescopic device P1 is in a state after being mounted between the wall surfaces W and W, the operator can rotate the second receiving part 5 with both hands as necessary. Like with one hand Compared with the work, it is possible to generate a larger and increased pressing force on both wall surfaces W and W, as well as making the work easier, so that the extension device P1 can be attached more firmly and stably. There is. It should be noted that the final pressing force applied by the outer pipe 1 ultimately causes the pressing force applied by the expansion / contraction device P1 between the wall surfaces W and W to be the maximum pressing force (the expansion / contraction device P1 causes mechanical damage, Position to generate an appropriate pressing force on the outer surface of the outer pipe 1 and a dangerous maximum pressing force so as not to exceed (the limit pressing force at which the wall is damaged) It may be carried out with a scale or mark that can be used to understand the range of occurrence.

[0054] The first receiving part 4 is not limited to this embodiment. For example, the shaft part 23 of the pressing part 21 may be removed and the coil panel 25 may be interposed between the pressing part 21 and the partition part 43, or the partition part 43 of the first receiving part 4 may be removed. Even if the coil panel 25 is attached between the pressing portion 21 and the bottom surface 62 of the abutting member 6, in short, when the inner pipe 2 is moved to the abutting member 6 side, the pressing force is applied in the wall surface W direction. Any configuration can be used as long as it occurs. Instead of the coil panel 25, a leaf spring may be used, or an elastic body such as rubber may be used in addition to the V-shaped spring.

Further, the second receiving portion 5 is not limited to this embodiment. For example, if the second receiving part 5 is used, the outer surface of the shaft 咅 54 is formed as shown in Fig. 1U. It may be directly screwed into 31 female threaded portions (not shown).

[0056] The expansion / contraction device P1 according to the present invention may be used as a second expansion / contraction device P2 configured on a shelf as shown in FIG. This is a combination of a plurality of the expansion devices P1. Specifically, the second expansion device P2 includes another expansion device P11 in which the receiving portions 4 and 5 and the contact members 6 and 6 provided at both ends are omitted between the two expansion devices PI and P1. These three expansion devices PI, Pl, and P1 are connected by two kinds of connecting members 7 and 8 at a predetermined interval. Of the connecting members 7 and 8, the connecting members 7 and 7 positioned at both ends are provided with cylindrical portions 7A and 7A penetrating the pipes 1 and 2 on the lower surfaces at both ends in the longitudinal direction of the flat plate portion, and the longitudinal center of the flat plate portion. A bottomed cylindrical part 7B provided with a recess for inserting and fixing both ends of the telescopic device P11 located in the center on the lower surface of the part is provided. In addition, each connecting member 8 located in the middle part has three cylindrical parts 8A, 8A, 8A penetrating and supporting the three expansion devices PI, Pl, and P1 on the lower surface of the flat plate part for a predetermined interval. It has a gap. 12 shown in FIG. 12 is the fixing means provided in the expansion / contraction device P11 located at the center. Reference numeral 16 denotes a second fixing means, in which screw holes (not shown) are formed in the cylindrical portions 8A and 8A located on both sides fixed to the outer pipe 1, and fixing screws 18 are provided in these screw holes. Can be fixed by screwing each of them into contact with or passing through the inner nove 2.

[0057] When the expansion / contraction device P2 configured as described above is attached between the wall surfaces W and W, the same procedure as that for attaching the expansion / contraction device P1 may be performed. That is, first, in a state where it is located between the wall surfaces W and W which are the mounting positions, for example, the expansion and contraction device P1 The abutting members 6 and 6 at both the left and right ends are brought into contact with the wall surfaces W and W, respectively. At this stage, the outer pipe 1 and the inner pipe 2 are not fixed. Subsequently, when the inner pipe 2 is further extended with respect to the outer pipe 1, the pressing portion 21 together with the inner noise 2 is formed in each of the first receiving portions 4 of the telescopic devices PI and P1 located on both sides. The coil panel 25 contracts because it moves toward the abutting member 6 side of the internal space 42 of the first receiving portion 4, and the pressing force is generated in the wall surface W direction due to the contraction of the coil panel 25. The coil panel 56 also contracts and generates a pressing force distributed on both wall surfaces W and W. In this state, by rotating the outer pipe 1 with respect to the inner noise 2, both pipes 1 and 2 are fixed, and the expansion device P2 can be supported while being stretched between the wall surfaces W and W. ing. Since the subsequent mounting method is the same as that of the telescopic device P1, description thereof is omitted.

[0058] In the expansion / contraction device P2 according to the present embodiment, three expansion / contraction devices PI, Pl1, and P1 are used, but the number of the expansion / contraction devices P1 may be two, or four or more. Can be used. Further, the fixing means 3, the first receiving portion 4, the second receiving portion 5, the contact members 6, 6 and the like may be provided in all of the three expansion devices PI, Pl l, P1, If the extension device P2 is installed between the wall surfaces W, it may be used in combination with the extension device P1 in which one or a plurality of the members are omitted. Further, two kinds of shelf boards A and B may be placed on the expansion devices PI, P11 and P1. In this embodiment, four pieces of a square shelf board A made up of a large number of wires are placed on the upper surface side of the outer pipe 1, and made up of a large number of wires on the upper surface side of the inner pipe 2. Place one of the rectangular shelf boards B Chisaru

[0059] FIGS. 1 to 12 show the case where the telescopic device is attached between the pair of left and right wall surfaces W and W, but as shown in FIG. 13 which is not only in the horizontal direction, such as between the opposite wall surfaces in the horizontal direction. In addition, it is also used as a column attached between the floor surface W1 and the ceiling surface W1, and a shelf 19 or a panel is attached between the columns so that it can be suitably used for storage shelves and partitions. It may be configured.

[0060] FIGS. 12 to 15 (a) and (b) show two storage devices PI, P 1 standing on the left and right, and these standing expansion devices PI, P1. It consists of two shelves 19, 19 that are suspended between them. Each of the shelves 19 is a rotary type that is movably fitted on the outer pipe 1 located on the lower side of each of the telescopic devices PI and P1 installed on the left and right sides and can be fixed to the outer pipe 1 at an arbitrary position. The support member 19A having the handle 20 and the support members 19A and 19A are inserted into recesses as a large number (six in the figure) of circular support portions provided at predetermined intervals in the longitudinal direction. A large number (six in the figure) of pipe material 19B and force are also configured, but other configurations may be used. Each pipe material 19B is formed by connecting two pipes 19a and 19b having different diameters so as to be stretchable in the longitudinal direction, and by expanding and contracting according to the interval between the two expansion devices PI and P1, Now it can be inserted into the left and right support members 19A, 19A!

[0061] In order to configure the shelf for storage, first, each of the expansion and contraction devices P1 previously provided with support members 19A and 19A at two upper and lower positions is fixed between the floor surface W1 and the ceiling surface W1. Become. In other words, with the contact member 6 of the outer pipe 1 placed on the floor surface W1, the contact member 6 located at the upper end by lifting the inner pipe 2 upward is placed in the first receiving portion 4 as described above. When the coil panel 25 is pressed against the ceiling surface W1, the coil panel 25 is contracted and a pressing force is generated in the direction of the wall surface W. The contraction of the coil panel 25 generates a pressing force in the direction of the ceiling surface W1, and the reaction force is generated. In response to this, the other coil panel 56 also contracts to generate a pressing force distributed on both wall surfaces Wl and W1. In this state, by rotating the outer pipe 1 relative to the inner noise 2, both pipes 1 and 2 can be fixed, and the telescopic device P1 can be supported while being stretched between the upper and lower wall surfaces Wl and W1. I can do it. Since the subsequent attachment method is the same as that of the expansion / contraction device P1 attached to the left and right wall surfaces W and W, the description is omitted. 16 shown in the figure is the second fixing means. Yes, both pipes 1 and 2 can be firmly fixed by screwing the fixing screw 18 into the joint 16B. When the expansion device P1 is supported while being stretched between the upper and lower wall surfaces W1 and W1, the coil panel 56 provided on the lower side is omitted, and the lower end is not expanded and contracted.

When the two telescopic devices PI and P1 are erected up and down, the height adjustment of the left and right support members 19A and 19A is performed by rotating the handle 20, and then the one support member 19A Insert one end of the pipe material 19B, which is slightly shorter than the distance between the expansion and contraction devices PI, P1, into the holding part, and then extend the other end and insert it into the holding part of the other support member 19A. When the insertion work of the material 19B is completed, the installation work is completed.

Claims

The scope of the claims

[1] A telescopic device interposed between a pair of left and right walls or a pair of upper and lower walls facing each other in the left-right direction or the up-down direction, an outer pipe whose one end is in contact with the one wall surface, and the outer pipe One end side is inserted into the other end side so as to be movable in the longitudinal direction, and the other end side is in contact with the other wall surface. The inner pipe has a smaller diameter than the outer pipe, and at least one of these two pipes. A contact member provided at the end of the wall surface and abutting against the wall surface, and provided between the corresponding contact member and the pipe in order to move and urge the contact member toward the wall surface with respect to the pipe And a telescopic device provided between the inner pipe and the outer pipe, and a fixing means for preventing the movement of both pipes in the longitudinal direction.

[2] The fixing means is means for preventing the movement of both pipes in the longitudinal direction by relative rotation of the two pipes, and gradually becomes deeper along the circumferential direction at the insertion side end of the inner pipe. A groove part, a ring-like body that enters the groove part and is partially open in the circumferential direction, and is provided at one end on the open side of the ring-like body, and is located on the deepest groove part side, from a shallow state 2. The telescopic device according to claim 1, wherein the telescopic device has a projecting portion projecting to the groove portion side so as to move toward the groove portion side and receive a pressing force of the groove portion force.

[3] Second fixing means different from the fixing means is provided, and the second fixing means includes an extension part that is externally fitted to one end of the outer pipe and extends upward of the inner pipe. And a fixing screw that fixes both pipes by screwing into a screw part provided in an extension part of the joint and pressing the outer surface of the inner pipe or screwing into the inner pipe. Item 2. The telescopic device according to item 2.

[4] The abutting member is externally fitted to one end of a cylindrical receiving portion having a partition portion at an intermediate portion, and a support portion for movably supporting the one pipe is provided at the other end of the receiving portion. Provided with a pressing portion for pressing the partition portion at the receiving portion side end of the pipe, and the pressing portion is formed on the contact member side of the receiving portion through a through hole formed in the partition portion at the center thereof. A shaft portion movable in the space to be formed is provided in a state protruding from the contact member side, and a coil panel constituting the elastic body is compressed on the shaft portion between the partition portion and the pressing portion. 2. The telescopic device according to claim 1, wherein the telescopic device is externally mounted.

5. The telescopic device according to claim 4, wherein the pressing portion is provided with an annular recess into which a part of the coil panel enters.

6. The expansion / contraction device according to claim 4, wherein the support portion includes a flange portion that is provided in a state of projecting inwardly at the pipe insertion end of the receiving portion and that contacts the outer surface of the pipe.

[7] The fixing means is attached to the opening formed in the outer pipe and the opening edge so that the base end portion is swingable about a rotation axis that is parallel to the longitudinal direction of the pipe. A bar portion and a pressing portion provided in the lever portion to enter the inside of the outer pipe through the opening and press the inner pipe against the outer pipe by swinging the lever portion. The telescopic device according to claim 1, wherein:

[8] The fixing means inserts an axial force into a gap formed between the inner surface of the outer pipe and the outer surface of the inner pipe at the central end where the wall side force of the outer pipe is also separated. The expansion / contraction device according to claim 1, comprising a wedge member for fixing, and a support member fixed to the outer nove to support the wedge member so as to be movable in the axial direction.

[9] The pipes are provided with the abutting member and the elastic body at the wall side ends of both pipes, and connect the one abutting member and the end of one pipe corresponding thereto. 2. The telescopic device according to claim 1, further comprising a screw mechanism capable of adjusting both positions in the axial direction.

[10] The screw mechanism includes a rotatable cylindrical body having a space in which one end is fixed to the abutting member and one pipe is movably inserted at the other end, and the inside of the cylindrical body And a shaft portion that is directed to the pipe side from the abutting member side, and a screw member that is provided at the pipe side end of the shaft portion, and can be screwed into the end portion of the one pipe. The expansion / contraction device according to claim 9, wherein the expansion / contraction device is configured by a screwing member fixed to the shaft and movable in the axial direction along with the rotation of the shaft portion.