JP2016063991A - Overturning prevention device and article equipped with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make adjustments to a suitable installation height in accordance with the height of a ceiling wall.SOLUTION: A cylinder 5 of a damper 3 is housed inside an article of furniture T and, a rod 6 penetrates the upper face of the article of furniture T, with the upper end mounted with a base member 8. In the lower end of the cylinder 5, a rack member 4 extends downward. Inside the article of furniture T, a gear box 10 is attached and, inside the gear box, a pinion gear 12 is installed that meshes with the rack teeth 4A of the rack member 4. With the adjustment dial of the pinion gear 12 rotated, the entire damper 3 can be raised or lowered through the engagement of the pinion gear 12 with the rack teeth 4A. As a result, the installation height of the damper 3 can be adjusted.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a fall prevention device and an article with a fall prevention device.

  The following patent document 1 can be mentioned as a conventional fall prevention device. Here, an overturn prevention device is disclosed that is attached to the upper surface of furniture via a mounting bracket. The overturn prevention device has a cylindrical body in which a female screw is formed, a screw shaft that can freely enter and exit from the cylindrical body, and a horizontal plate seat that is attached to the upper end of the screw shaft and contacts the ceiling wall. Configured. By adjusting the protruding height of the screw shaft and bringing the horizontal plate seat into contact with the ceiling wall, the overturn prevention device is stretched between the furniture and the ceiling wall, thereby preventing the furniture from toppling over.

Utility Model Registration No. 3014940

  However, in the above structure, the height at which the screw shaft protrudes from the cylindrical body is likely to be restricted. For this reason, when the distance between furniture and a ceiling wall becomes large, the situation which cannot be installed with said fall prevention apparatus may arise.

  The present invention has been completed based on the above circumstances, and provides an anti-tip device and an article with an anti-tip device that can be adjusted to an appropriate installation height according to the height of the ceiling wall. Objective.

  The fall prevention device of the present invention includes a fall prevention tool that is interposed between an article that is a fall prevention target and a ceiling wall in a room where the article is installed. The fall prevention device has a main body connected to a main body portion whose upper end is in contact with the ceiling wall and whose lower end extends toward the article side, and a lower end portion of the main body portion, and is connected to a mechanism portion provided on the article. It is the structure which had the height adjustment part which displaces the whole part to a height direction.

  Here, the concept of articles includes furniture, beds, large televisions, refrigerators, bookcases, showcases, server racks, and the like that may fall down due to an earthquake or the like.

  According to the present invention, if the height adjustment unit is adjusted in accordance with the relative height relationship between the article and the ceiling wall, the entire body portion is displaced in the height direction so that the fall prevention tool is placed between the article and the ceiling wall. Can be set in a good stretch state. Therefore, the fall prevention device of the present invention can be installed in a wide range with respect to the distance between the article and the ceiling wall.

  The overturn prevention device of the present invention is a damper in which the main body portion includes a cylinder and a rod that protrudes from the cylinder so as to expand and contract, and the main body portion has a protruding end side of the rod that contacts the ceiling wall. On the other hand, the cylinder side may extend toward the inside of the article so that the entire cylinder is stored inside the article.

  According to such a configuration, when a damper is used as a fall prevention tool, the more conspicuous cylinder side is stored inside the article, so that the fall prevention tool avoids a situation that impairs the beauty of the article and the surrounding space. can do.

The mechanism unit has an operation unit that can be rotated, and the mechanism unit converts the rotational motion of the operation unit into a linear motion in a height direction and transmits the linear motion to the height adjustment unit. Also good.
According to such a configuration, since the height adjusting unit can be linearly displaced in the height direction by rotating the operation unit in the mechanism unit, the height of the main body unit can be easily adjusted. .

Furthermore, you may provide the lock part which regulates the displacement of the said height adjustment part in the said mechanism part.
According to such a configuration, the displacement of the height adjusting unit is regulated by the lock unit provided in the mechanism unit. Therefore, the height adjusting unit can be reliably held at a desired height position.

Front sectional view showing the installation status of the fall prevention device according to the first embodiment Similarly, a sectional side view showing the connection between the height adjustment unit and the mechanism unit Front sectional view showing the installation status of the fall prevention device according to the second embodiment Similarly, a sectional side view showing the connection between the height adjustment unit and the mechanism unit

  Next, Embodiments 1 and 2 embodying the overturn prevention device of the present invention will be described with reference to the drawings.

<Embodiment 1>
1 and 2 show Embodiment 1 of the present invention. The fall prevention device according to the first embodiment is intended to prevent the furniture T or the like (article) from falling over due to an earthquake or the like. The illustrated article is furniture T, which has a rectangular parallelepiped shape that has a smaller depth dimension in the front-rear direction (dimension in the left-right direction in FIG. 1 and the like) than the height direction. Therefore, the direction indicated by the arrow P in FIG. 1 is the direction in which the furniture T is assumed to fall. In the following description, the right side in FIG. 1 is called “front” and the left side is called “rear”.

  The furniture T is installed in the interior of the house with an appropriate gap from the side wall 1 with the side wall 1 as the back. A space is also set between the upper surface of the furniture T and the indoor ceiling wall 2.

  The fall prevention device according to the first embodiment includes a fall prevention tool A that prevents the furniture T from falling over by stretching between the inner surface of the furniture T and the ceiling wall 2. The overturn prevention tool A according to the first embodiment includes a damper 3 (main body portion) and a rack member 4 as a height adjusting portion, which will be described later, for adjusting the mounting height of the damper 3.

  The damper 3 has a bottomed cylindrical cylinder 5 filled with hydraulic oil (working fluid), a piston (not shown) slidably inserted into the cylinder 5, and a base end portion connected to the piston. A tip 6 is provided with a rod 6 protruding to the outside of the cylinder 5. The damper 3 further includes a rod guide (not shown) that seals the opening on the tip side of the cylinder 5, and a seal member (not shown) that seals between the inner periphery of the rod guide and the outer periphery of the rod 6. I have.

  In the first embodiment, the entire cylinder 5 is stored in an upright posture inside the furniture T. The rod 6 extends straight upward from the upper surface of the cylinder 5, and reaches the ceiling wall 2 through an escape hole 7 opened on the upper surface of the furniture T. A base member 8 that is in contact with the ceiling wall 2 in a state of contact with the ceiling wall 2 is attached to the distal end portion of the rod 6. A rack member 4 extends straight downward on the lower surface of the cylinder 5. Rack teeth 4A are formed on one side surface of the rack member 4 over a predetermined height range.

  Inside the furniture T, a mechanism portion M is disposed that acts to raise and lower the cylinder 5 with respect to the rack member 4. The mechanism M has a gear box 10, and the gear box 10 is attached to the upper side of the rear wall surface via a bracket 11 inside the furniture T. The rack member 4 passes through the gear box 10 so as to be displaceable from above. In the gear box 10, a pinion gear 12 is rotatably accommodated through a bearing and meshes with the rack teeth 4A.

  As shown in FIG. 2, one end side (the left end side in the drawing) of the rotation shaft 13 of the pinion gear 12 protrudes outward from the gear box 10, and an adjustment dial 14 as an operation portion is attached to the protruding end portion. Accordingly, when the pinion gear 12 is rotated in accordance with the rotation operation of the adjustment dial 14, the damper 3 can be raised and lowered along the height direction through the engagement of the pinion gear 12 and the rack teeth 4A. That is, the rotational movement of the adjustment dial 14 is converted into a linear movement in the vertical direction by the meshing of the rack teeth 4A and the pinion gear 12.

  In the gear box 10, a lock claw accommodating portion 15 is attached to a portion corresponding to the pinion gear 12 in the radial direction, and a lock claw 16 (lock portion) for preventing the pinion gear 12 from rotating is assembled thereto. The lock claw 16 can be displaced in the lock claw accommodating portion 15 in the direction of approaching or separating along the radial direction of the pinion gear 12. The tip of the lock claw 16 is formed in a bifurcated shape that sandwiches one tooth of the pinion gear 12. For this reason, when the lock claw 16 is engaged with the pinion gear 12, the rotation of the pinion gear 12 in either the forward or reverse direction is restricted.

  A shaft portion 17 is integrally extended from the pinion gear 12 toward the outer side in the radial direction from the pinion gear 12 and penetrates the lock claw accommodating portion 15 so as to be displaceable. A knob operating portion 18 having a larger diameter than the shaft portion 17 is formed at the protruding end of the shaft portion 17. By pulling the knob operating portion 18, the lock claw 16 can be moved backward with respect to the pinion gear 12 and the meshing state with the pinion gear 12 can be released. As a result, the pinion gear 12 is allowed to rotate in either the forward or reverse direction. A spring 19 is inserted into the shaft portion 17 so as to be interposed between the lock claw 16 and the inner surface of the lock claw accommodating portion 15, and the spring 19 is connected to the pinion gear 12 with respect to the lock claw 16. It is energized in the meshing direction.

  The damper 3 described above generates a damping force as it contracts. Here, the contraction operation of the damper 3 means an operation in which the protruding length of the rod 6 from the cylinder 5 and the total length of the damper 3 become shorter. Since the mechanism for generating the damping force of the damper 3 has a well-known structure, a description thereof is omitted. The inside of the cylinder 5 is partitioned by a piston into a rod side pressure chamber (not shown) that accommodates the proximal end portion of the rod 6 and an anti-rod side pressure chamber. The piston is formed with an orifice (not shown) that is a throttle valve for communicating between the two pressure chambers. The orifice functions as a damping force generator that generates a damping force by applying resistance to the flow of hydraulic oil between the rod-side pressure chamber and the non-rod-side pressure chamber accompanying the expansion / contraction operation of the damper 3.

  The piston is provided with a check valve (not shown). When the damper 3 is contracted, the check valve is closed to prevent the hydraulic oil from flowing from the anti-rod side pressure chamber to the rod side pressure chamber in the check valve. Accordingly, during the contraction operation, the flow path of the hydraulic oil from the non-rod side pressure chamber to the rod side pressure chamber is only the orifice. The check valve opens when the damper 3 extends to allow the hydraulic oil to flow from the rod-side pressure chamber to the non-rod-side pressure chamber. Here, the extension operation of the damper 3 means an operation in which the protruding length of the rod 6 from the cylinder 5 and the entire length of the damper 3 become longer. In addition, a spring (not shown) is provided in the rod-side pressure chamber to generate elasticity that resists the extension operation as the damper 3 extends.

  Next, the operation of the first embodiment configured as described above will be described. Depending on the height of the ceiling wall 2 in the room where the furniture T is installed, the base member 8 of the damper 3 does not reach the ceiling wall 2, or conversely, the base member 8 interferes with the ceiling wall 2 and causes the surface to contact correctly. I can't.

  In such a case, the knob operating portion 18 is pulled against the spring 19 to release the engagement between the lock claw 16 and the pinion gear 12. As a result, the pinion gear 12 is allowed to rotate in either the forward or reverse direction. If the adjustment dial 14 is rotated in any desired direction in this state, the entire damper 3 can be raised or lowered along the height direction through the engagement between the rack teeth 4A and the pinion gear 12.

  Thus, when the base member 8 is correctly brought into contact with the ceiling wall 2, the pulling operation of the knob operation portion 18 is released. As a result, the lock pawl 16 is again engaged with the pinion gear 12 by the spring force of the spring 19, so that the pinion gear 12 is locked in a state in which it is prevented from rotating in either the forward or reverse direction. Thus, the damper 3 can be set between the furniture T and the ceiling wall 2 in a regular stretched state.

  The damper 3 set between the furniture T and the ceiling wall 2 acts to contract the rod 6 when an earthquake occurs and the furniture T tries to tilt in the direction of arrow P in FIG. Generate a damping force. For this reason, the inclination angle and inclination speed to the front of the furniture T are suppressed, and the furniture T can be prevented from falling in the direction away from the side wall (the direction indicated by the arrow P).

The effects of the first embodiment are as follows.
In the damper 3 according to the first embodiment, the entire cylinder 5 and a part of the rod 6 are stored inside the furniture T and hidden from the outside. That is, only a part of the rod 6 is exposed to the outside, and the damper 3 hides the more conspicuous cylinder 5 side, which contributes to maintaining the beauty of the furniture T and the surrounding space.

  Moreover, since the installation height of the damper 3 with respect to the furniture T can be easily adjusted only by rotating the adjustment dial 14 while pulling the knob operation portion 18, it is easy to use. When the adjustment operation is completed, if the pulling operation on the knob operation unit 18 is stopped, the lock claw 16 is automatically displaced to the meshing position with respect to the pinion gear 12 by the spring 19. Can also be easily performed.

<Embodiment 2>
3 and 4 show Embodiment 2 of the present invention. In the first embodiment, the damper 3 is stretched between the furniture T and the ceiling wall 2 in an upright posture. However, in the second embodiment, the installation height can be adjusted while keeping the damper 3 in a desired inclined posture. I can do it. The second embodiment is different from the first embodiment in that the gear box 10 is movable along the rail member 20 and other configurations are basically the same as those in the first embodiment.

  The rail member 20 is arranged in the furniture T, and is supported on a back surface in FIG. 3 via a support bracket (not shown). The rail member 20 is made of a metal such as an aluminum alloy, for example, and is formed in an arc shape as a whole. However, the arc formed by the rail member 20 has a form centered on the connection pin 9 when the base member 8 comes into contact with a predetermined position of the ceiling wall 2.

  As shown in FIG. 4, the rail member 20 is formed in a channel shape having a substantially C-shaped cross section. A channel groove 21 is formed in the rail member 20 over its entire length and opens horizontally toward the inside of the furniture T.

  A slider 22 is incorporated in the rail member 20 and is movable along the rail member 20. The slider 22 and the outer surface of the gear box 10 are connected by a hollow connecting pipe 23. The connecting pipe 23 is inserted into the channel groove 21 so as to be displaceable along the channel groove 21. As a result, the gear box 10 can move along the rail member 20. Note that the end of the rotating shaft 13 of the pinion gear 12 enters the connecting pipe 23 coaxially.

On the other hand, a pair of upper and lower slits 24 are provided through the upper and lower side pieces 20 </ b> A of the rail member 20, and both the slits 24 are formed over a predetermined length range along the longitudinal direction of the rail member 20. . Screw holes 25 are formed on the surfaces of the slider 22 facing the both side pieces 20A of the rail member 20, respectively. With respect to the slider 22, a set screw 26 is tightened into the screw hole 25 through both slits 24, and is tightened until the head portion 26 </ b> A of the set screw 26 comes into pressure contact with the outer surface of the both side pieces 20 </ b> A of the rail member 20. As a result, the slider 22 and the gear box 10 can be fixed to any position of the rail member 20.
Since other configurations are the same as those of the first embodiment, the same reference numerals are given in the drawings and description thereof is omitted. However, in the second embodiment, the escape hole 7 formed in the furniture T has a long hole shape in the front-rear direction because the damper 3 rotates.

  In Embodiment 2 configured as described above, the installation height of the damper 3 can be freely adjusted according to the height of the ceiling wall 2. In this case, the adjustment work is performed by rotating the adjustment dial 14 in a state where the engagement between the lock claw 16 and the pinion gear 12 is released, as in the first embodiment. In this way, the base member 8 can be brought into contact with the height of the ceiling wall 2 as in the first embodiment.

  In particular, in the second embodiment, the installation height of the damper 3 can be adjusted, and the installation angle of the damper 3 can be adjusted. As shown in FIG. 3, the damper is installed in an inclined posture along the front-rear direction so that the rod 6 side is the front side (the side far from the side wall 1) and the cylinder 5 side is the rear side. In order to obtain a high fall-preventing effect on the furniture T, it is preferable that the installation angle of the damper 3 is, for example, a predetermined inclination angle range (15 degrees to 25 degrees) with respect to the vertical direction. Are known.

  When adjusting to such an angle, the base member 8 side of the damper 3 is brought into contact with a predetermined position of the ceiling wall 2 so that the arc formed by the rail member 20 is an arc centered on the connection pin 9. deep. Then, when both the set screws 26 of the slider 22 are loosened and the slider 22 and the gear box 10 are moved along the rail member 20, the damper 3 rotates around the connection pin 9 of the base member 8. The installation angle of the damper 3 can be easily adjusted within the optimum angular range. After the adjustment operation, the slider 22 and the gear box 10 can be fixed to the rail member 20 by tightening the two set screws 26 and bringing the head portions 26A of the set screw 26 into pressure contact with both side pieces 20A of the rail member 20. . As a result, the installation angle of the damper 3 is also fixed. The damper 3 attached as described above functions effectively by preventing the furniture T from falling down. Other functions and effects are the same as those of the first embodiment.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In the above embodiment, the adjustment dial 14 arranged inside the furniture T is operated to rotate the pinion gear 12, but the rotating shaft 13 of the pinion gear 12 is guided to the outside of the furniture T, An operation handle may be attached to the end, and the operation handle may be rotated.
(2) In the above embodiment, the fall prevention device is arranged near the rear part of the furniture T, but it may be arranged in the center part in the front-rear direction, and the number of installations is not particularly limited,
A pair may be arranged in the width direction of the furniture T.
(3) In the above embodiment, the height adjustment mechanism has been shown to be engaged with the rack teeth 4A and the pinion gear 12. However, for example, a ball screw may be used instead. Any mechanism that converts the accompanying rotational motion into linear motion can be used.
(4) In the above embodiment, the lock claw 16 that locks the pinion gear 12 from the radial direction is provided as a lock portion for the pinion gear 12, but the present invention is not limited to this. For example, a type using a lock pin that is installed on the wall surface of the gear box 10 and is operated in parallel to the rotation shaft 13 with respect to the pinion gear 12 and is inserted into and removed from the pinion gear 12 can be considered.

  DESCRIPTION OF SYMBOLS 2 ... Ceiling wall 3 ... Damper (main-body part) 4 ... Rack member (height adjustment part) 5 ... Cylinder 14 ... Adjustment dial (operation part) 16 ... Lock claw (lock part) A ... Fall prevention tool T ... Furniture M ... Mechanism part

Claims (5)

Comprising a fall prevention tool interposed in a stretched state between an article that is a fall prevention target and an indoor ceiling wall where the article is installed;
The fall prevention tool is
A main body portion with an upper end abutting against the ceiling wall and a lower end side extending toward the article side;
An overturn characterized by having a height adjusting portion that is continuous with a lower end portion of the main body portion and is connected to a mechanism portion provided in the article to displace the entire main body portion in a height direction. Prevention device.   The main body portion is a damper including a cylinder and a rod that protrudes from the cylinder so as to extend and contract, and the main body portion is in contact with the ceiling wall at the protruding end side of the rod, while the cylinder side is 2. The overturn prevention device according to claim 1, wherein the whole cylinder is stored inside the article so as to extend toward the inside of the article.   The mechanism unit includes an operation unit that can be rotated, and the mechanism unit converts a rotational motion of the operation unit into a linear motion in a height direction and transmits the linear motion to the height adjustment unit. The overturn prevention device according to claim 1 or 2.   The overturn prevention device according to any one of claims 1 to 3, wherein the mechanism portion is provided with a lock portion that restricts displacement of the height adjustment portion.   An article with a tipping prevention device, wherein the tipping prevention device according to any one of claims 1 to 4 is provided on the article.

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