JPH026841Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention is applicable to a tensioning device for a rod-shaped member, specifically, a tensioning type pole or rack installed between fixed walls facing each other at a predetermined interval. The present invention relates to a tensioning device for a rod-shaped member.

(Prior Art) In general, a tension rack has a plurality of pipes 11 and 12 arranged side by side at a predetermined interval as shown in FIGS. 5 and 6, and connecting rods 13, 14, and a second shelf formed by arranging a plurality of pipes 21 and 22 in parallel at a predetermined interval, and connecting one longitudinal end of the pipes with a connecting rod 23. The pipes 21, 21 on both sides in the width direction of this second shelf member 2 are inserted into the pipes 11, 11 on both sides in the width direction of the first shelf member 1, and each pipe is Appropriate locking means is provided between the pipes 11 and 21 so that the pipe 21 is locked to and released from the pipe 1 by relative rotation of the pipes 11 and 21, and the outer ends of the pipes 21 and 21 are While the nut-like body 25 is inserted and fixed in the part, the clamping body 5 is supported by screws 63 on the receiver 6 that comes into contact with the fixed wall W ₂ , and the screw shaft 51 integrally projects from the clamping body 5 . is screwed into the screw hole 26 of the nut-like body 25, and the tightening body 5 is configured to be moved in the axial direction by rotation thereof.

(Problems to be Solved by the Invention) When the tension rack constructed as described above is interposed between fixed walls W ₁ and W ₂ facing each other at a predetermined interval and fixed by tension, First, pull out the second shelf member 2 from the first shelf member 1, connect the connecting rod 13 of the first shelf member 1 to the fixed wall _W1 , and connect the connecting rod 23 of the second shelf member 2 to the outer receiver 6. fixing the wall
W ₂ and the pulled-out state is locked by a locking means, and then by rotating the clamping body 5, the clamping body 5 is moved outward in the axial direction, and the receiving body 6 is strongly pressed against the fixed wall _W2 , and as a result, the rack consisting of the first shelf member 1 and the second shelf member 2 is fixed between the fixed walls _W1 and _W2 by tension. In this case, if the distance between the two fixed walls W ₁ and W ₂ increases even slightly due to an earthquake, the pressing force of the receiver 6 to the fixed wall W ₂ is lost, and the two fixed walls W ₁ and W ₂ It falls out from between.

Further, the pressure contact of the receiver 6 to the fixed wall _W2 is performed by the second
Although this is done on both sides of the shelf member 2 in the width direction,
The rotational operation of the clamping body 5 is different on both sides, and therefore the pressing forces of the receiving bodies 6 on both sides to the fixed wall _W2 are different, so that when an article is placed on the rack, the rack itself does not fall off. However, there is a problem in that the rack turns in half using the receiver 6 on the side where the pressure is strongly applied as a fulcrum, causing the article on the rack to drop.

(Means for Solving the Problems) The present invention was devised to solve the above problems. A screw shaft is provided on one side of the attachment member, a nut-like body is provided on the other side, and the screw shaft is screwed into the screw hole of the nut-like body,
and a spring is interposed between the rod-shaped member and the movable member to bias both members in the direction of separation;
At the insertion portion between the rod-shaped member and the movable member, a see-through portion is formed on the outer member, a scale extending in the moving direction of the movable member is formed near the see-through portion, and the scale is formed on the inner member. This feature is characterized by forming an instruction section for instructing.

(Function) According to the present invention, when the tightening member is brought into pressure contact with the fixed wall directly or via the receiver by the rotation operation of the tightening member, the movable member is moved in the axial direction to compress the spring, and the elastic repulsive force of the spring is used to perform the pressure welding.Moreover, the amount of compression of the spring is indicated on a scale by the indicator, and therefore the When the tightening member is brought into pressure contact with the fixed wall on both sides of the two-shelf member in the width direction, the pressing force can be applied equally on both sides.

(Example) The present invention will be described below with reference to the drawings, taking as an example a case in which the present invention is implemented in a rack that can be expanded and contracted.

This rack is composed of a first shelf member 1 and a second shelf member 2 that can be inserted into and removed from the first shelf member 1, and the amount of insertion of the second shelf member 2 into the first shelf member 1 can be changed. As a result, the total length of the rack can be expanded or contracted.

The first shelf member 1 includes a plurality of pipes 11 and 12 arranged in parallel at predetermined intervals, connecting rods 13 and 14 that integrally connect the pipes 11 and 12 at both ends in the longitudinal direction, and It is constituted by an auxiliary connecting rod 15 that is slidable relative to each pipe 11, 12 at an intermediate position in the direction.

Further, the second shelf member 2 is slidable against a plurality of pipes 21 and 22 arranged in parallel at a predetermined interval, and the pipes 21 and 21 on both sides in the width direction at one end in the longitudinal direction. The connecting rod 23 is fixed to each pipe 22, and an auxiliary connecting rod 24 is slidable relative to each pipe 21, 22 at an intermediate position in the longitudinal direction.

Note that the pipes 1 on both sides in the width direction of the first shelf member 1
1, 11 have larger diameters than the intermediate pipes 12..., and the pipes 21, 21 on both sides in the width direction of the second shelf member 2 are connected to the pipes 11, 11, and the intermediate pipes 22... are connected to the pipes 12... Each has a diameter that allows it to be inserted.

Using the 1.2 shelf members 1 and 2 configured in this way, insert each pipe 21 and 22 of the second shelf member 2 into each pipe 11 and 12 of this first shelf member 1, and
Pipes 11, 11 on both sides in the width direction in the shelf member 1
and pipes 2 on both sides of the second shelf member 2 in the width direction.
A locking means (not shown) is provided between each pipe 1 and 21 to lock the insertion and removal between the two pipes 1 and 21.
The relative rotation of the pipes 1 and 12 locks the pipes 21 and 21 in and out of the pipes 11 and 11, and the relative rotation of both the pipes 11 and 21 in the opposite direction releases the locking. ,21
It is structured so that each can be drawn out or inserted separately.
The locking means may have any structure such as a known cam structure, but it is preferable to use a locking device previously filed by the applicant of the present invention (Utility Model Registration Application No. 100442 of 1981). .

Therefore, a rod-shaped member in the rack made expandable and retractable as described above, for example, a portion of the pipes 21, 21 on both sides in the width direction of the second shelf member 2, which protrudes outward from the connecting rod 23, is attached to the axis of the pipes 21, 21. A guide body 3 having a rectangular guide hole 31 extending in the same direction is inserted and fixed with an adhesive or the like, and a cylindrical body 4 is inserted and fitted on the outside of the protruding portions of the pipes 21, 21. In the outer end small diameter cylindrical part 41 of 4,
A nut-like body 42 having a screw hole 43 extending in the same direction as the axes of the pipes 21, 21 is buried, and one end is fixed to the small diameter cylindrical part 41, and the other end is attached to the pipe 21, 21 side. A rectangular guide shaft 44 made of a metal pipe extending toward the front is provided, and this guide shaft 44 is inserted into the guide hole 31 of the guide body 3,
It is configured to guide and hold the axial movement of the cylindrical body 4 relative to the pipe 21.

On the other hand, a cylindrical tightening body 5 with a bottom that can be loosely inserted into the small-diameter cylindrical portion 41 of the cylindrical body 4 is formed, and the head of a screw shaft 51 is embedded and fixed in the bottom wall of the tightening body 5. the screw shaft 51 with its tip facing the cylindrical body 4 side.
is screwed into the screw hole 43 of the nut-like body 42, and the tightening body 5 is rotated relative to the cylindrical body 4 to draw the small diameter cylindrical portion 41 of the cylindrical body 4 into the tightening body 5,
Alternatively, a receiving body 6 made of a seat plate 61 having a spherical receiving surface and a rubber plate 62 is brought into contact with the outer surface of the bottom wall of the tightening body 5, and
The receiver 6 is rotatably fixed to the clamping body 5 with a screw 63.

Also, within the cylindrical body 4, the small diameter cylindrical portion 4 of the cylindrical body 4
A spring 7 is interposed between the first side step portion and the guide body 3 to bias the cylindrical body 4 outward, and the outer end flange-like portion of the guide body 3 is The outer periphery is colored red or the like, or the entire guide body 3 is made of colored synthetic resin to form the indicator part 32, while the cylindrical body 4 is provided with a see-through window 45.
At the same time, a scale sticker 46 having a scale extending in the direction of movement of the cylindrical body 4 is pasted on the outer circumferential surface of the cylindrical body 4 near the transparent window 45, and the scale of the seal 46 is attached to the indicator section. 32 and is configured to give instructions. In addition, 47 in the figure is a transparent synthetic resin plate.

The ease of this invention is constructed as described above.
When interposing the fixed walls W ₁ and W ₂ facing each other at a predetermined interval and fixing them by tensioning, first, the second shelf member 2 is pulled out from the first shelf member 1, and the first shelf member 1 connection rod 13 is brought into contact with the fixed wall W ₁ , and the clamping body 5 on the second shelf member 2 side is brought into contact with the receiver 6.
The cylindrical body 4 is moved _inward in the axial direction by rotating the clamping body 5. Then, the spring 7 is compressed, and the elastic repulsive force of the spring 7 is used to press the receiver 6 against the fixed wall W2, and fixation is performed by tension between the fixed walls _{W1 and W2} . It is.

Furthermore, by indicating the scale of the scale sticker 46 using the indicating unit 32, the amount of compression of the spring 7, in other words, the tensile force can be displayed. It is also possible to make the tension force uniform on both sides of the second shelf member 2 in the width direction.

In the embodiments described above, the cylindrical body 4 is held by the pipe 21 by inserting the guide shaft 44 into the guide body 3, but this structure is changed to that shown in FIG. As shown in FIG.
It may also be directly inserted and held.

In addition, when the tubular body 4 is inserted and fitted so that the pipe 21 is on the outside as shown in FIG. Paste 46,
In addition, the inner edge of the cylindrical body 4 is used as an indicator.

Further, the transparent window 45 may be closed with a transparent synthetic resin plate 47 as in the embodiment, but the entire cylindrical body 4 may be made of transparent synthetic resin so that the indicator 45 can be seen through. .

(Effects of the invention) As explained above, the tensioning device according to the invention has the following effects:
It is used for a rod-shaped member in a pole or rack that is interposed between opposing fixed walls at a predetermined interval and fixed by tension, and the tension is applied by compressing a spring. Because it is caused by elastic repulsive force,
Even if the distance between the fixed walls becomes somewhat larger due to earthquakes, etc., the spring will not accidentally fall off from between the fixed walls, and the compression of the spring can be done by tightening the nut of the screw shaft by rotating the tightening member. This is done by screwing the spring against the body, making it possible to force the compression of the spring, or in other words, to force the tension.

Moreover, the present invention can display the amount of compression of the spring, that is, the tension force, by indicating the scale using the indicator, and therefore, the weight of the article that can be placed can be determined by the display, Furthermore, when tensioning is applied on both sides in the width direction, such as a rack, the tensioning force on both sides can be made uniform, and the rack can be stretched stably and strongly between the fixed walls. It's ivy.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; Fig. 1 is a plan view thereof, Figs. 2 and 3 are longitudinal sectional front views showing enlarged main parts of the same, and Fig. 4 is an enlarged view of main parts showing another embodiment. 5 is a plan view of a conventional product, and FIG. 6 is an enlarged sectional view of the same essential parts. 21...Pipe (rod-shaped member), 32...Instruction part,
4... Cylindrical body (movable member), 42... Nut-like body,
43...Screw hole, 45...See-through window (see-through part), 4
6... Scale sheet, 5... Tightening body (tightening member),
51...Screw shaft, 7...Spring.

Claims (1)

[Scope of utility model registration request] A tensioning device for a rod-shaped member interposed between fixed walls facing each other at a predetermined interval, the movable member being fitted and supported by the rod-shaped member so as to be movable in the axial direction;
A screw shaft is provided on one side of the tightening member that contacts the fixed wall, and a nut-like body is provided on the other, and the screw shaft is screwed into the screw hole of the nut-like body, and the rod-like member and the movable member are connected. A spring is interposed between the members to urge the two members apart, and a see-through portion is formed in the outer member at the insertion portion between the rod-shaped member and the movable member, and a movable portion is provided near the see-through portion. 1. A tensioning device for a rod-shaped member, characterized in that a scale extending in the moving direction of the member is formed, and an indicator portion for indicating the scale is formed on an inner member.