JPH11178665A - Vibration-sensitive fall preventive device of shelf fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vibration-sensitive fall preventive of a shelf fixture which makes no trouble when the fixture is used and which does not incur any risk that the fixture comes into contact with people, even if vibrations are generated. SOLUTION: A horizontal rod 1 is made movable vertically, while an arm 2 is regulated by a regulation pin 3 protruding from a side surface of a shelf fixture. Moreover a movable pin 14 protruding from the outer or inner surface of the arm 2 is inserted into a guide hole 23 provided in the front and rear direction of a side plate 12. If the pin 14 is positioned at the forward location in the hole 23, the rod 1 is positioned at a normal point near the front surface of a shelf plate of the fixture and if the pin is positioned at the rear location in the hole, the rod is moved upward and positioned at a work point so that articles such as books stored in the fixture are prevented from falling down. At the normal point, the arm is urged by an elastic member 4 so as to be pulled rearward and a vibration-sensitive releasing element 5 is provided to release the arm when vibration is generated by an earthquake.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for preventing vibrations caused by earthquakes or the like and preventing articles such as books stored in shelves from falling down.
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for preventing seismic falling of shelf furniture that normally operates safely without disturbing.

[0002]

2. Description of the Related Art As a conventional apparatus for preventing seismic falling of furniture in a shelf, there is one disclosed in Japanese Utility Model Publication No. 58-26589. That is, in front of the mounting table, a stop bar formed into a U-shape with both ends connected by a rocking piece is made rotatable upward from a state in which it protrudes forward, and is elastically spring-loaded so as to rotate upward. In the biased state, the drive arm holds the stop bar protruding forward. When an earthquake vibration occurs, the weight placed on the support falls and pulls the thread, rotates the drive arm, unlocks the stop bar, and the stop bar rotates and moves upward. This protects the object from falling.

[0003]

However, according to the conventional apparatus for preventing seismic falling of shelf fixtures, the stop bar is normally held in a state of protruding forward, which hinders the loading and unloading of the load. In addition, when the seismic vibration prevention device is activated by the occurrence of earthquake vibration, the stop bar rotates upward from the state where it protrudes forward, so it is dangerous to touch people if there is a nearby person There was a problem.

[0004] In view of the above situation, the present invention seeks to solve the problem in that the horizontal rod that operates in an emergency such as an earthquake does not usually hinder the use of shelf furniture, It is an object of the present invention to provide a safe device for preventing seismic falling of shelf furniture without danger of contact with a person even when such vibrations occur.

[0005]

The inventor of the present invention has conducted intensive studies to solve the above-mentioned problems. As a result, both ends of a horizontal rod arranged along a shelf plate are provided on the side of an article take-out surface such as a book shelf in a shelf fixture. The arm is located inside or outside the side plate provided on both sides of the shelf, and the horizontal rod can be moved up and down while regulating the arm with the regulation pin protruding from the side of the shelf furniture. Further, when a moving pin protruding from the outer surface or the inner surface of the arm is inserted into the guide hole formed in the side plate in the front-rear direction, and positioned at the front portion in the guide hole, the horizontal rod is moved to the shelf plate of the shelf fixture. The stationary position is located near the front surface, and when the moving pin is positioned at the rear part in the guide hole, the horizontal rod moves upward to prevent the articles such as books stored in the shelf furniture from falling. Move to the operating position, and in the steady position, Developed a seismic fall prevention device for shelf furniture, which is equipped with a seismic release device that holds the system in an elastically biased state so that it pulls backwards and that is released by vibration such as an earthquake. Thus, the present invention is provided.

Further, a front portion of the rotatable latch is engaged with a moving pin of an arm, and a lower surface behind the latch is supported by a pendulum supporting portion which swings back and forth upon sensing an earthquake. Although it is held in position, it is preferable to provide a seismic release device that can rotate in a direction in which the engagement with the moving pin is released when the support by the pendulum is released.

Further, a seismic release device may be provided in which the movable pin of the arm is supported by being engaged with and supported by a support portion of a pendulum which swings back and forth upon sensing an earthquake. Good.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
An embodiment that embodies a device for preventing seismic falling of shelf furniture according to the present invention will be described. FIG. 1 to FIG. 5 show a device for preventing seismic falling of shelf furniture according to a first embodiment of the present invention.

As shown in FIGS. 1 to 5, a device A for preventing seismic falling of a shelf fixture according to the first embodiment is mounted on a shelf fixture B, and includes a horizontal rod 1, an arm 2, and a restriction pin 3. , An elastic member 4, and a seismic release device 5. In the illustrated example, the seismic release device 5 includes a latch 6 and a pendulum 7.

First, as shown in FIG. 1, the shelf furniture B has four columns 8 having a plurality of locking openings 8a on the outer surface and the inner surface.
・ ・ Stand up, down, left and right, and base shelf 9 at the lower end,
A top plate 10 is fixed to the upper end, and shelves 11,... Are mounted in multiple stages between the base shelf plate 9 and the top plate 10, and locking holes 8a located inside the front and rear columns 8, 8 are provided. Use side plate 12
Is attached, and articles such as books can be taken in and out from the open front side.

As shown in FIG. 1, a shelves B
A rod having a length located between the left and right columns 8 is used on the front surface of the shelf plate 11. By rotating the horizontal rod 1 upward, it is possible to prevent articles such as books stored in the shelf furniture B from dropping due to vibration such as an earthquake.

As shown in FIG. 2, the arm 2 is a substantially triangular plate, and has a cylindrical receiving portion 13 on the inner surface at the distal end, into which the distal end of the horizontal rod 1 can be fitted. A moving pin 14 protrudes from the outer surface of the
a has been established.

As shown in FIG. 2, the regulating pin 3 is
The movement of the arm 2 having the horizontal rod 1 is restricted by inserting the restriction pin 3 into the guide hole 15a of the arm 2 and positioning the restriction pin 3 from the inner surface.

The seismic release device 5 includes a latch 6 and a pendulum 7. First, as shown in FIG. 3, the latch 6 has a locking rod 17 which is inclined downward and oblique from the front surface of the plate-like latch body 16, and extends from the side of the latch body 16 toward the tip. , A first pivot pin 18 is protruded, and a concave portion 19 which can be engaged with the moving pin 14 of the arm 2 from above is provided on the lower surface of the distal end portion of the locking rod 17. When the first pivot pin 18 of the latch 6 is pivotally supported on the side plate 12 of the shelf furniture B, the weight of the latch body 16 causes the proximal end side, that is,
It is set to rotate in the direction of the arrow in FIG.
Note that the engagement between the locking rod 17 of the latch 6 and the moving pin 14 may be such that a recess is provided in the moving pin 14 and the locking rod 17 is engaged.

The pendulum 7 is, as shown in FIGS.
A plate-shaped support portion 21 having a sharpened tip extends from the upper surface of the substantially cubic weight portion 20, and a second pivot pin is provided from the side surface of the support portion 21.
22 protruding. The second pivot pin of this pendulum 7
When the pivot 22 is pivotally supported on the side plate 12 of the shelf furniture B, the pendulum 7 swings back and forth due to vibration such as an earthquake. That is, when a vibration such as an earthquake occurs, the balance between the latch 6 serving as the seismic release device 5 and the pendulum 7 is lost, and the horizontal rod 1 moves from the steady position to the operating position.

As shown in FIGS. 3 and 4, the guide hole 23 is formed in the shelf board 11 of the shelf furniture B from the front to the rear.
The regulating pin 3, which is a substantially L-shaped elongated hole that opens downward, is inserted from the outer surface into the guide hole 15 a of the arm 2 from the outer surface, and moves the arm 2. When the pin 14 is inserted into the guide hole 23 of the side plate 12 from the inner surface and assembled, and the moving pin 14 is pulled backward along the guide hole 23, the horizontal rod 1 is moved upward. In the normal position where the two moving pins 14 are located at the front of the guide holes 23, the horizontal rod 1 is located at the front of the shelf board 11, and the moving pins 14 of the arm 2 are located at the rear of the guide holes 23. In the position, the horizontal rod 1 is located at an upper position, and is in a position where articles such as books stored in the shelf furniture B can be prevented from falling. In the example described above, at the rear end of the guide hole 23,
When the moving pin 14 is locked, the horizontal rod 1 is held at the operating position. In the normal position, if the horizontal rod 1 is installed at a position overlapping the front surface of the shelf 11 of the shelf furniture B, it is easy to take out articles such as books stored in the shelf furniture B. Even if they are located above and below the plate 11, they do not hinder the removal of the articles and do not pose a problem, so these positions are referred to as the vicinity of the front of the shelf plate in the specification.

As shown in FIG. 3, the locking pin 24 is a pin projecting obliquely behind the guide hole 23 on the outer surface of the side plate 12 of the shelf B.

A coil spring is used for the elastic member 4. Both ends of the elastic member 4 are connected to the moving pins 14 of the arm 2.
Then, the horizontal rod 1 is elastically urged in the direction of pulling the horizontal rod 1 from the normal position to the operating position by being locked to the locking pin 24.

As shown in FIGS. 2 and 3, in the apparatus A for preventing seismic falling of shelf furniture according to the first embodiment, both ends of an elastic member 4 which is a coil spring are fixed to the moving pin 14 of the arm 2 by the locking. Lock the pin 24 on the moving pin 14 of the arm 2 in the guide hole.
The locking rod 17 of the latch 6 which is rotatable with respect to the shelf board 11 of the shelf furniture B in a state of being elastically biased in a direction of pulling the rear of the latch 23.
After the concave portion 19 of the latch 2 is engaged with the moving pin 14 of the arm 2 from above, the latch body 16 of the latch 6 is prevented from rotating rearward as shown in FIG.
The bottom surface is supported by the support 21 of the pendulum 7 and is kept in a steady state. According to the device A for preventing seismic falling of the shelf furniture, when a vibration such as an earthquake occurs, the pendulum 7 swings back and forth around the second pivot pin 22 and the latch 21 of the latch 6 is held by the support 21 of the pendulum 7. The main body 16 is released from being supported, and the latch 6 is rotated rearward, that is, in the direction of the arrow in FIG.
The engagement between the concave portion 19 of the latch 6 and the moving pin 14 of the arm 2 is released, and the moving pin 14 of the arm 2 is pulled along the guide hole 23 by the pulling force of the elastic member 4 to return to the natural state. While the regulating pin 3 is regulated by the guide hole 15a, the state of FIG. 4 is maintained in the state of FIG.

According to the apparatus A for preventing the dropping of furniture and shelves according to the present embodiment, in the normal position, the horizontal rod 1 is located at a position overlapping the front surface of the shelf 11 of the furniture B. Although it is easy to take out articles such as books stored in B, when vibration such as an earthquake occurs, the balance between the latch 6 and the pendulum 7 in the seismic release device 5 is lost, and the recess of the latch 6 is formed.
When the engagement between the moving pin 14 of the arm 2 and the moving pin 14 of the arm 2 is released and the moving pin 14 of the arm 2 is pulled along the guide hole 23 by the elastic member 4, the regulating pin 3 is regulated by the guide hole 15a. Since the horizontal rod 1 moves upward to be in the operating state, it is possible to prevent articles such as books stored in the shelf furniture from falling. As described above, according to the shelf furniture seismic drop prevention device A of the present embodiment, in the normal position, the horizontal rod 1 overlaps the front surface of the shelf board 11 of the shelf furniture B, and furthermore, between the struts 8 and the struts 8. Since it is located in the inside, it does not hinder the removal of articles such as books stored in the shelf furniture B, and when vibration such as an earthquake occurs, it moves from the steady position in FIG. 4 to the operating position in FIG. However, since the horizontal rod 1 does not jump forward and rotate, but simply rises, it is safe even if a person is nearby during operation. Furthermore, according to the apparatus A for preventing seismic falling of the shelf fixture of the present embodiment, the guide hole 23 is formed in the shelf plate 11 of the shelf fixture B, and the regulating pin 3 is protruded from the inner surface of the support column 8. Since it is only necessary to attach devices such as the quake release device 5, installation on the existing shelf fixture B can be easily performed.

It should be noted that the above-mentioned device A for preventing seismic fall of shelf fixtures is described above.
In this example, the horizontal rod 1 is provided on the front side of the shelf furniture B, but the horizontal rod 1 is provided on the rear side of the shelf furniture B by using the guide hole 23 provided on the rear side of the side plate 12. It is also possible to provide so that it may be located. Furthermore, the arms 2 on both sides of the horizontal rod 1
2 is located between the left and right supports 8 and 8 of the shelf furniture B, and the pendulum 7 and the latch 6 which are the seismic release device 5 are provided outside the side plate 12. The arms 2, 2 on both sides are set so as to be located outside the columns 8, 8,
It is also possible to provide the seismic release device 5 so as to be located inside the side plate 12. Further, in the above-described device A for preventing seismic falling of shelf furniture, the regulation pins 3 are protruded from the surface of the support column 8, but the regulation pins 3 may be erected from the side plate 12 of the shelf furniture B. Further, in the above-mentioned device A for preventing the furniture from being seismically dropped,
The moving pin 14 of the arm 2 is elastically biased by being pulled by the elastic member 4, but the arm 2 itself may be pulled by the elastic member 4 so as to be elastically biased. Although the coiled spring is used in the elastic member 4 described above, a string-like rubber is used, or a plate spring is used.
It may be elastically biased.

FIG. 6 is an explanatory cross-sectional view of a device for preventing seismic falling of shelf furniture according to a second embodiment. The device A for preventing seismic falling of shelf furniture according to the second embodiment has substantially the same structure as the device A for preventing seismic falling of shelf furniture according to the first embodiment described above. Is different. That is, in the apparatus A for preventing seismic fall of shelf furniture according to the second embodiment,
Instead of providing a guide hole in the arm 2, a guide notch 15b is formed by notching the bottom surface of the arm 2, and a regulating pin 3 is protruded from the shelf plate 11 of the shelf fixture B to guide the guide notch 15b.
The pendulum 7 of the seismic release device 5 swings back and forth, and when the latch 6 and the moving pin 14 are disengaged, the moving pin 14 of the arm 2 is pulled by the elastic member 4. Then, the regulating pin 3 slides in the guide notch 15b, and is pulled rearward while the movement of the arm 2 is regulated, whereby the horizontal rod 1 moves upward. The guide portion includes the guide hole and the guide notch of the arm 2.

FIGS. 7 and 8 show an apparatus A for preventing seismic falling of a shelf fixture according to a third embodiment. As shown in FIG. 7 and FIG. 8, the device A for preventing seismic falling of shelf furniture according to the third embodiment is the device A for preventing seismic falling of shelf furniture according to the first embodiment.
Similarly to the above, it is composed of the horizontal rod 1, the arm 2, the regulating pin 3, the elastic member 4, and the seismic release device 5, but only the pendulum 7 is used as the seismic release device 5. Support 21
Is directly engaged with the moving pin 14 of the arm 2 so as to be held at a steady position. Specifically, as shown in FIG. 7, a concave portion 19 is provided in the support portion 21 of the pendulum 7 so that the concave portion 19 of the pendulum 7 and the moving pin 14 of the arm 2 are engaged. Then, when vibration such as an earthquake occurs, the pendulum 7 swings back and forth around the second pivot pin 22, the engagement between the support portion 21 of the pendulum 7 and the moving pin 14 of the arm 2 is released, and the elastic member 4 Thus, the moving pin 14 of the arm 2 is pulled along the guide hole 23.

FIG. 9 is an explanatory sectional view of a device for preventing seismic falling of shelf furniture according to a fourth embodiment. The device A for preventing seismic falling of shelf furniture according to the fourth embodiment has substantially the same structure as the device A for preventing seismic falling of shelf furniture according to the third embodiment described above. Are different. That is, the fourth
In the apparatus A for preventing a seismic fall of a shelf fixture of the embodiment, the arm 2
Instead of providing a guide hole, the bottom of the arm 2 is cut out to form a guide notch 15b, and the shelf plate of the shelf furniture B is cut out.
When the regulating pin 3 is protruded from 11 and the regulating pin 3 is positioned in the guide notch 15b, the pendulum 7 of the seismic release device 5 swings back and forth, and the engagement between the pendulum 7 and the moving pin 14 is released. By pulling the moving pin 14 of the arm 2 by the elastic member 4, the regulating pin 3 slides in the guide notch 15b, and is pulled backward while the movement of the arm 2 is regulated, and the horizontal rod 1 moves upward. You do it.

[0025]

As apparent from the above description, the following operations and effects are obtained. According to the seismic drop prevention device of the first aspect, in the steady position, since the horizontal rod is near the front of the shelf board of the shelf fixture, it is possible to easily take out articles such as books stored in the shelf fixture, When vibration such as an earthquake occurs, the holding of the steady position by the seismic release device is released,
When the arm is pulled by the elastic member, the moving pin moves backward in the guide hole, and while the movement of the arm is regulated by the regulating pin, the horizontal rod moves upward to be in an operating state. It is possible to prevent articles such as books stored in the storage device from falling. Therefore, in the steady position, since the horizontal rod is near the front of the shelf board of the shelf fixture, it does not hinder the removal of articles such as books stored in the shelf fixture, and even if vibration such as an earthquake occurs, When moving from the steady position to the operating position, the horizontal rod does not jump forward and rotate, but simply rises, so that it is safe even if a person is nearby during operation. Furthermore, since a guide hole is formed in a shelf board of a shelf fixture, a regulation pin is erected from the side of a support, and a seismic release device is simply attached, installation on an existing shelf fixture can be easily performed. .

According to the seismic drop prevention device of the present invention, when a vibration such as an earthquake occurs, the pendulum of the seismic release device swings back and forth to lose balance, and the engagement between the latch and the moving pin of the arm is disengaged. The arm is pulled by the elastic member, the moving pin moves backward in the guide hole, and the movement of the arm is regulated by the regulating pin, and the horizontal rod moves upward to be in the operating state. It is possible to prevent articles such as books stored in the shelf furniture from falling.

According to the apparatus for preventing seismic drop according to the third aspect, when a vibration such as an earthquake occurs, the pendulum of the seismic release device swings back and forth, and the balance is lost. The engagement is released, the arm is pulled by the elastic member, the moving pin moves rearward in the guide hole, and while the movement of the arm is regulated by the regulating pin, the horizontal rod moves upward to be in the operating state. Therefore, it is possible to prevent articles such as books stored in the shelf furniture from falling.

[Brief description of the drawings]

FIG. 1 is a perspective view of a shelf fixture provided with a device for preventing seismic fall of the shelf fixture of the first embodiment.

FIG. 2 is a perspective view showing a main part of the device for preventing a seismic fall of a shelf fixture.

FIG. 3 is an exploded perspective view showing a main part of the device for preventing a seismic fall of a shelf fixture.

FIG. 4 is an explanatory side view of a device for preventing a fall of a furniture in a shelf.

FIG. 5 is an explanatory side view of a device for preventing a fall of a furniture in a shelf.

FIG. 6 is an explanatory side view of a device for preventing seismic falling of shelf furniture according to a second embodiment.

FIG. 7 is an explanatory side view of a device for preventing seismic falling of shelf furniture according to a third embodiment.

FIG. 8 is an explanatory side view showing a relationship between a pendulum and an arm of the device for preventing seismic falling of shelf furniture according to the third embodiment.

FIG. 9 is an explanatory side view of a device for preventing seismic falling of shelf furniture according to a fourth embodiment.

[Explanation of symbols]

A Device for preventing seismic falling of shelf furniture B Shelf furniture 1 Side bar 2 Arm 3 Restriction pin 4 Elastic member 5 Seismic release device 6 Latch 7 Pendulum 8 Prop 9 Base shelf 10 Top plate 11 Shelf plate 12 Side plate 13 Receiving part 14 Moving pin 15a Guide hole 15b Guide notch 16 Latch book 17 Locking rod 18 First pivot pin 19 Recess 20 Weight 21 Support section 22 Second pivot pin 23 Guide hole 24 Lock pin

Claims (3)

[Claims] 1. An arm is provided at both ends of a horizontal rod arranged along a shelf on the side of an article take-out surface such as a book shelf in a shelf fixture, and the arm is provided inside or outside a side plate provided on both sides of the shelf. Position, the horizontal rod can be moved up and down while regulating the arm with a regulating pin protruding from the side of the shelf furniture, and furthermore, the moving pin protruding from the outer surface or the inner surface of the arm is attached to the side plate in the front-rear direction. When inserted into the drilled guide hole and positioned at the front of the guide hole, the horizontal rod is in a steady position near the front of the shelf board of the shelf, and when the moving pin is positioned at the rear of the guide hole, The arm is moved upward so as to be in an operating position that is at a height that can prevent articles such as books stored in the shelf furniture from falling, and in a steady position, the arm is pulled backward by the elastic member. While maintaining the elastically biased state, An anti-shake device for shelves and fixtures, which is provided with a seismic release device that is released by vibration. 2. A front part of a rotatable latch is engaged with a moving pin of an arm, and a lower surface behind the latch is supported by a support part of a pendulum swinging back and forth upon sensing an earthquake. 2. A seismic release device according to claim 1, further comprising a seismic release device which is held at the position, but is rotatable in a direction in which it can be disengaged from the moving pin when the support by the pendulum is released. apparatus. 3. A seismic release device which holds a moving pin of an arm in a steady position by engaging and supporting a moving pin of an arm with a support portion of a pendulum which swings back and forth upon sensing an earthquake. Item 2. The device for preventing a fall of a shelf fixture according to Item 1.