JP2007029699A - Fall preventing utensil for electric appliance or furniture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fall preventing utensil for electric appliances or furniture which has an excellent vibration and impact absorbing function, can be applied to an object being vulnerable to vibrations or an object having many curved surfaces, can be fixed to a core material such as a column located at a position being away from an object, and in addition, has a smaller number of parts, and is excellent in the manufacturing efficiency or costs as well. <P>SOLUTION: This fall preventing utensil is constituted of a coil spring 1, and a wire 2 which is inserted in the coil spring in a manner to be able to reciprocate. The inner diameter of the coil spring is formed smaller in one end section than in the other end section. The wire is formed of a bendable material, and at the same time, on the distal end section, an anti-slipping section is formed. In this case, the anti-slipping section is formed to have a diameter being smaller than the inner diameter on the other end section of the coil spring, and also, being larger than the inner diameter of the one end section. On the proximal end section, a fixing section 5 which is fixed to the object or a wall surface is formed. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an overturn prevention device for preventing an electrical product, furniture, or the like from falling due to an earthquake. It is related with the fall prevention tool which can exhibit the very outstanding fall prevention effect by a synergistic effect with.

Japan is one of the world's leading earthquake powers, and many precious lives have been lost by the earthquake.
Among the victims of the earthquake, there are many victims due to the collapse of the building itself, but the actual situation is that the number of victims laid down by the fall of furniture in the room cannot be ignored.
Even if there is no damage to the human body, an article that is vulnerable to vibration or impact, such as an AV device such as a liquid crystal television or a personal computer, or an article that is entirely or partially made of glass may be damaged by a fall.

In view of such a situation, measures are often taken in homes, offices, and the like to prevent articles such as furniture from falling over.
Among them, one of the most commonly used measures is a method of connecting furniture and the like to a wall surface using an L-shaped fitting as shown in FIG.

However, such L-shaped metal fittings generally used in the past have many problems.
First, when fixing furniture or the like to a wall surface, fixing to a core material such as a column or a beam (hereinafter abbreviated as a column or the like) is more effective in preventing falling than fixing to a wall material. In the conventional L-shaped bracket (L), when the furniture or the like (K) is separated from the pillar or the like (H), as shown in FIG. 21, the two cannot be connected and fixed.
Further, since the L-shaped bracket directly fixes the furniture and the wall surface, it cannot absorb a large impact force applied to the fixed portion when an earthquake occurs. For this reason, the screws used for fixing may come off, or the wall surface or furniture may be damaged at the fixing portion. Further, it is not preferable to apply to an article that is vulnerable to vibration such as AV equipment.
In addition, since the L-shaped bracket cannot be fixed to a curved surface portion such as the back surface of a television, the object to be applied is limited to an angular shape such as a chiffon.

In view of the many problems of the L-shaped metal fittings as described above, fall prevention tools such as furniture having various forms have been proposed.
For example, Patent Documents 1 and 2 below disclose a fall prevention tool such as furniture that connects furniture and the like to a wall surface by a coil spring.
According to such a fall prevention device using a coil spring, the impact force applied when an earthquake occurs can be absorbed by the elasticity of the spring, but such furniture and the wall surface are directly connected by a single coil spring. In the only form, the effect is only small, and when the degree of shaking is very large, it is very difficult to prevent a large impact force from being applied to the fixed portion.
Further, regarding the positional relationship between the furniture and the columns, etc., there is some flexibility compared to the L-shaped bracket, but if the distance between the furniture and the columns and the like is increased, it becomes difficult to fix them.

Patent Document 3 below discloses a fall prevention tool for furniture and the like configured to connect furniture and the ceiling surface using a wire rod.
According to the fall prevention tool using such a wire rod, since the flexibility of the positional relationship between the furniture, etc. and the pillars is great, even if the furniture, etc. are separated from the pillars, they can be connected and fixed together. Although there is an advantage of being able to do so, there is a big problem that the ability to absorb the impact applied when an earthquake occurs is low.

  As described above, the fall prevention tool using the coil spring and the fall prevention tool using the wire have their merits and demerits, and any form of the fall prevention tool can solve all the problems of the L-shaped bracket described above. It was unsatisfactory.

On the other hand, in a fall prevention tool such as furniture, the use of a combination of a spring and a wire itself is known as disclosed in Patent Document 4 below.
However, in the fall prevention device in which the spring and the wire are combined in the form disclosed in Patent Document 4, the spring is provided to hold the wire (cord) in one direction and hold it in a tension state. In short, it is provided for the purpose of appropriately adjusting the length of the wire, and is not provided for the purpose of shock absorbing function.
In fact, in the disclosed technique of Patent Document 4, since the spring is provided in a state of being accommodated inside the cylindrical body (the cord locking member), it cannot bend in a direction other than the axial direction, Since the range that can be expanded and contracted in the axial direction is limited, the shock absorbing function that the spring can exhibit is very small.
In addition, since the tipping prevention tool as disclosed in Patent Document 4 has a large number of parts and requires precise assembly, it is prone to malfunction, manufacturing efficiency is low, manufacturing cost is high, etc. There is also a problem in terms.

JP-A-8-214971 Utility Model Registration No. 3082691 Japanese Patent Laid-Open No. 10-323250 JP-A-8-228867

  The present invention has been made to solve the above-described problems of the prior art, and is based on the synergistic effect of the shock absorbing function by the expansion and contraction and bending of the coil spring and the displacement response function by the reciprocating slide movement of the wire rod. In addition to being able to demonstrate a very good fall-preventing effect, it can also be applied to objects that are vulnerable to vibration and objects with many curved surfaces, and the cores of pillars etc. that are located away from the object It is intended to provide a tool for preventing overturning such as electrical products and furniture that can be fixed to a material and that requires only a small number of parts and that is excellent in terms of manufacturing efficiency and cost.

The invention according to claim 1 is a tipping prevention device for preventing a tipping of the object by connecting the tipping prevention target object such as furniture or home appliance and a wall surface, the coil spring, and the inside of the coil spring. The coil spring is formed such that one end is smaller than the other end, the wire is formed from a bendable material, and the tip thereof. A slip prevention portion having a diameter smaller than the inner diameter of the other end portion of the coil spring and larger than the inner diameter of the one end portion is formed on the portion, and a fixing portion fixed to the object or the wall surface is formed on the base end portion. It is related with the fall prevention tool characterized by being formed.
According to a second aspect of the present invention, the coil spring is composed of two coil springs continuously formed on the same axis by one wire, and the wire at the connecting portion between the two coil springs is the coil. 2. The overturn prevention device according to claim 1, wherein the anti-tip device is wound at a pitch wider than that of the spring or not wound.

According to a third aspect of the present invention, the wire comprises two wires arranged on the same axis, the tip of one wire is inserted into one coil spring, and the tip of the other wire is the other The fall prevention tool according to claim 2, wherein the fall prevention tool is inserted into the coil spring.
According to a fourth aspect of the present invention, an extension portion is formed extending from the other end portion of the coil spring in substantially the same axial direction as the wire, and the extension portion is formed by a wire forming the coil spring. 3. The overturn prevention device according to claim 1 or 2, wherein the fixing portion is formed at a tip portion thereof.

In the invention according to claim 5, the wire is made of a single wire, and is housed inside the coil spring in a state where the middle portion of the wire is slack, and a tensile force is applied to the coil spring. In this case, the coil spring is configured to prevent the wire rod from slackening before the coil spring is plastically deformed.
The invention according to claim 6 relates to the tipping prevention tool according to claim 5, wherein one end portion of the coil spring is reduced in a conical shape.

The invention according to claim 7 relates to the overturn prevention device according to any one of claims 1 to 6, wherein the fixing portion is formed in an annular shape.
The invention according to claim 8 has a fixing bracket fixed to the wall surface, and the fixing bracket is formed with a hook-shaped locking portion capable of locking the fixing portion. The folded portion is folded back upward and a retaining portion formed at the tip of the folded portion. The retaining portion is formed wider than the folded portion, and is folded back to the side of the folded portion. 8. The overturn prevention device according to claim 7, wherein an angle formed with a side of the portion is a right angle or an acute angle.

  The invention according to claim 9 relates to the overturn prevention device according to any one of claims 1 to 8, further comprising a cylindrical body that covers the entire surface of the coil spring.

According to the first aspect of the present invention, it is possible to absorb the shock and vibration at the time of earthquake occurrence by expansion and contraction and bending of the coil spring, and only by the coil spring by the reciprocating movement of the wire inserted inside the coil spring. Since it is possible to cope with a large shaking (displacement) that cannot be absorbed, the synergistic effect of the two can exert a very excellent fall prevention effect.
In addition, the inner diameter of the coil spring is formed so that one end is smaller in diameter than the other end, and the leading end of the wire rod is formed with a slip prevention portion having a larger diameter than the inner diameter of one end of the coil spring. It is prevented that the wire is completely removed from the inside of the coil spring, and furniture or the like does not fall down due to excessive movement of the wire.
In addition, since the wire is made of a material that can be bent and can be reciprocated, the flexibility of the positional relationship between the furniture and the core material such as the pillar is very large during installation, and the furniture and the pillar are large. Even when they are separated or in a twisted positional relationship, furniture or the like and a pillar or the like can be easily and reliably connected and fixed.
Furthermore, since the number of parts is small, problems such as failure are unlikely to occur, the manufacturing efficiency is excellent, and the manufacturing cost can be kept low.

According to the invention of claim 2, since the coil spring is composed of two coil springs continuously formed on the same axis by one wire, the allowable range of expansion and contraction and bending of the coil spring is greatly expanded. In addition, the ability to absorb shocks and vibrations in the event of an earthquake is significantly enhanced.
Moreover, since the wire at the connecting portion between the two coil springs is wound at a wider pitch than that of the coil spring or is not wound, large bending is allowed at the connecting portion, and an earthquake occurs. The ability to absorb shocks and vibrations is further enhanced.

  According to the invention of claim 3, in both the pair of one wire rod and coil spring and the other pair of wire rod and coil spring, the shock absorbing function by the expansion and contraction and bending of the coil spring and the reciprocating sliding movement of the wire rod It is possible to exhibit a synergistic effect of the displacement response function due to, and the fall prevention function of furniture and the like is dramatically improved.

  According to the invention which concerns on Claim 4, it becomes possible to give appropriate rigidity with respect to a fall prevention tool by forming a fixing | fixed part in the front-end | tip of the extension part of the wire extended from the other end part of a coil spring. Therefore, the present invention can be suitably applied to an object that does not allow a large displacement.

  According to the fifth aspect of the present invention, when a tensile force is applied to the coil spring via the wire, the wire spring is not slackened before the coil spring is plastically deformed, so that the coil spring becomes elastic. It becomes possible to receive a tensile load exceeding the limit with the wire. Therefore, the coil spring is not plastically deformed and stretched, the allowable displacement is maintained at an appropriate stroke, and furniture or the like can be effectively prevented from falling.

  According to the invention which concerns on Claim 6, it becomes possible to perform easily the operation | work which loosens and accommodates a wire in the inside of a coil spring because the one end part of a coil spring is diameter-reduced conically, Manufacturing efficiency can be increased.

  According to the invention according to claim 7, since the fixing portion is formed in an annular shape, it can be easily fixed only by hooking on the protruding portion of the object, and for an object having many curved surfaces such as a television set. But it can be applied easily.

  According to the invention which concerns on Claim 8, a fixing | fixed part can be easily fixed to a wall surface by hooking a cyclic | annular fixing | fixed part on the latching | locking part of a metal fitting. In addition, the locking portion is formed wider than the folded portion, and a retaining portion having a right angle or an acute angle formed between the side and the side of the folded portion is formed. This is surely prevented.

  According to the ninth aspect of the present invention, since the entire surface of the coil spring is covered with the cylindrical body, it is possible to prevent a finger or the like from being sandwiched between the coil springs and to prevent overturning excellent in safety. Is obtained.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, a preferred embodiment of a fall prevention tool (hereinafter simply referred to as a fall prevention tool) such as an electric product or furniture according to the present invention will be described with reference to the drawings.
FIG. 1 is an external view showing a first embodiment of the overturn prevention device according to the present invention, and FIGS. 2 and 3 are enlarged sectional views of main parts thereof.
The overturn prevention tool of the first embodiment includes a coil spring (1) and a wire (2) that is inserted into the coil spring (1) so as to be reciprocally movable.

The coil spring (1) is made of a metal wire wound in a coil shape at a predetermined pitch, expands when it receives a tensile force in the axial direction, and expands and contracts to its original length when the tensile force disappears. It also has the flexibility of bending when it receives bending force in the direction perpendicular to the axis.
This point is also common to coil springs of other embodiments described later.

In the first embodiment, the coil spring (1) is formed of two coil springs (1a) (1b) formed continuously on the same axis by one wire.
By continuously forming two coil springs in this way, the allowable range of expansion and contraction and bending is greatly expanded compared to the case of only one coil spring, and the ability to absorb shocks and vibrations when an earthquake occurs. Is significantly increased.
The wire of the connecting portion (3) of the two coil springs (1a) (1b) is wound at a wider pitch than the two coil springs, whereby the connecting portion (3) is coiled (1a) (1b). It is possible to bend more than the part of).

  The inner diameters of the coil springs (1a) and (1b) are such that one end is formed to be smaller in diameter than the other end, and the two coil springs are located at positions where the other ends are close to each other and the ends are separated from each other. It is arranged to be in.

The wire (2) is formed by twisting a large number of thin metal wires, and has excellent tensile strength (for example, 100 kgf or more, preferably 200 kgf or more), but can be bent as a whole. In addition, this point is common also to the wire of other embodiment mentioned later.
In the first embodiment, the wire rod (2) is composed of two wire rods arranged on the same axis, the tip of one wire rod is inserted into the inside of one coil spring (1a), and the other wire rod is The tip is inserted into the other coil spring (1b).

At the distal end of the wire rod (2), a slip prevention portion (4) having a diameter smaller than the inner diameter of the other end of the coil spring (1a) (1b) and larger than the inner diameter of the one end is formed. In addition, the two wire rods are arranged so that these drop prevention portions (4) face each other.
The slip-off prevention part (4) can be formed, for example, by fitting a metal cylinder to the wire and caulking from the outside, and moves beyond the other end of the coil spring as shown in FIG. However, as shown in FIG. 3, it cannot move beyond one end of the coil spring, and the wire (2) is prevented from being completely detached from the coil spring (1).
In the present invention, the shape of the drop prevention portion (4) is not particularly limited, but is formed in a hexagonal column shape in the illustrated example.

At the base end of the wire (2), there is formed a fixed part (5) that is fixed to a toppling-preventing object (hereinafter simply referred to as an object) such as furniture or an electric product.
In the first embodiment, of the two wires, the fixed portion (5) of one wire is a fixed portion to the object, and the fixed portion (5) of the other wire is a fixed portion to the wall surface. .
The fixing portion (5) is formed in an annular shape, and can be easily fixed by hooking the fixing portion (5) to the protruding portion of the object.

FIG. 4 is an external view showing a second embodiment of the overturn prevention device according to the present invention.
The overturn prevention device according to the second embodiment also includes a coil spring (1) and a wire (2) that is inserted into the coil spring (1) so as to be reciprocally movable. It is the same as the first embodiment in that there are two each.

  The fall prevention tool according to the second embodiment is different from that of the first embodiment in that the wire of the connecting portion (3) of the two coil springs (1a) and (1b) is not wound and is U-shaped. This is the point. In addition, since it is the same as that of 1st embodiment about all the other structures, in order to prevent duplication of description, the same code | symbol is attached | subjected to the same structure and description is abbreviate | omitted.

Also in the fall prevention tool which concerns on 2nd embodiment, the connection part (3) of two coil springs (1a) (1b) can bend more largely than the part of a coil spring (1a) (1b). However, it is easy to bend in one direction (in the direction of the arrow in the figure) because it is U-shaped without being wound, but slightly difficult to bend in the other direction.
In the fall prevention tool according to the second embodiment, since the flexibility of the connecting portion (3) is thus directional, the direction of the connecting portion is changed according to the positional relationship between the wall surface and the object. By arranging it, the ability to absorb shocks and vibrations when an earthquake occurs can be exhibited most efficiently.

FIG. 5 is an external view showing a third embodiment of the overturn prevention device according to the present invention, and FIGS. 6 and 7 are enlarged cross-sectional views of main parts thereof.
The overturn prevention tool of the third embodiment is also composed of a coil spring (1) and a wire (2) inserted into the coil spring (1) so as to be reciprocally movable.

  In the third embodiment, the coil spring (1) is formed of two coil springs (1a) (1b) formed continuously on the same axis by one wire, as in the first embodiment. And the wire of the connection part (3) of two coil springs (1a) (1b) is wound by the pitch wider than both coil springs.

  One coil spring (1a) has an inner diameter that is smaller at one end than the other end, but the other coil spring (1b) has the same inner diameter from one end to the other. The diameter is the same as that of the other end of one coil spring (1a).

At the tip of the wire (2), a slip-off prevention part (4) is formed which is smaller in diameter than the inner diameter of the other end of the coil spring (1a) and larger than the inner diameter of the one end.
In the third embodiment, since the wire is inserted only from one side of the coil spring, the drop prevention part (4) can move across the two coil springs as shown in FIG. . Therefore, compared with the first and second embodiments described above, the ability to cope with the displacement caused by the sliding movement of the wire is high.
However, movement in one direction is blocked by one end of one coil spring (1a) (see FIG. 7), and movement in the other direction extends from the other end of the other coil spring (1b). Since it is interrupted by the drawn wire (extended portion (9) to be described later), the movement range is limited to the inside of the two coil springs, and the wire can be prevented from moving over an excessive distance.

In the fall prevention tool of the third embodiment, an extension portion (9) extending in the opposite direction on the same axis as the wire (2) is formed from the other end portion of the other coil spring (1b). The extension part (9) is located inside the inner diameter of the other end of the coil spring (1).
The extension part (9) is formed by a wire forming the coil spring (1b), and an annular fixing part (5) fixed to the object or the wall surface is formed at the tip part.
That is, in 3rd embodiment, the fixing | fixed part (5) is each formed in the extension part (9) of a wire rod (2) and a coil spring, and any one fixing | fixed part is a fixing | fixed part to a wall surface, The other fixing part is a fixing part to the object.

  In the third embodiment, unlike the first and second embodiments, one fixing portion is formed at the tip of the extending portion of the wire extending from the other end portion of the coil spring, thereby preventing the tipping prevention tool. Therefore, it is possible to provide an appropriate rigidity, and it can be suitably applied to an object in which a large displacement is not allowed.

8 and 9 are external views showing a fourth embodiment of the overturn prevention device according to the present invention, and FIG. 10 is an enlarged cross-sectional view of a main part thereof.
Similarly to the first to third embodiments, the tipping prevention device of the fourth embodiment includes a coil spring (1) and a wire rod (2) inserted into the coil spring (1) so as to be reciprocally movable. It is configured.

  The fall prevention tool of the fourth embodiment is different from that of the third embodiment described above in that the coil spring (1) is composed of one coil spring. Since the other configurations are all the same as those in the third embodiment, the same reference numerals are given to the same configurations in order to prevent duplication of description, and descriptions thereof are omitted.

In the fourth embodiment, the inner diameter of the coil spring (1) is formed such that one end is smaller than the other end.
The inner diameter of one end of the coil spring (1) is smaller than the slip prevention part (4) formed at the tip of the wire (2), and the inner diameter of the other end is the slip prevention part (4). The diameter is larger than that.

In the fall prevention tool of the fourth embodiment, as in the third embodiment, an extension portion (9) extending in the opposite direction on the same axis as the wire (2) is formed from the other end portion of the coil spring (1). ing.
The extension part (9) is formed by a wire forming the coil spring (1), and an annular fixing part (5) fixed to the object or the wall surface is formed at the tip part.
That is, in the fourth embodiment, as in the third embodiment, the fixing portion (5) is formed on the wire (2) and the extension portion (9) of the coil spring, respectively, and either one of the fixing portions is formed. Is a fixed part to the wall surface, and the other fixed part is a fixed part to the object.

The wire (extension part (9)) extended from the other end part of the coil spring (1) is located outside the inner diameter of the other end part of the coil spring (1).
Thereby, the movement prevention part (4) of the wire (2) is blocked by one end of one coil spring (1a) while moving in one direction (see FIG. 10), but moves in the other direction. Is unobstructed (see FIG. 9).
Therefore, this fourth embodiment has the highest ability to cope with the displacement caused by the sliding movement of the wire rod among all the embodiments of the present invention.

FIG. 11 is an external view showing a fifth embodiment of the overturn prevention device according to the present invention, and FIG. 12 is an enlarged cross-sectional view of an essential part thereof.
Similarly to the first to fourth embodiments, the tipping prevention device of the fifth embodiment includes a coil spring (1) and a wire rod (2) inserted into the coil spring (1) so as to be reciprocally movable. It is configured.

The fall prevention tool of the fifth embodiment is different from that of the first embodiment described above in that the wire (2) is made of one wire. 11 and 12, the same components as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.
That is, the tipping prevention tool of the fifth embodiment connects the tip portions of the two left and right wires (2) used in the first embodiment inside the coil springs (1a) (1b). It is a structure like a single wire.

In the fifth embodiment, the portion accommodated in the coil springs (1a) and (1b) (that is, the middle part of one wire) is in a loose state as shown in FIG. In the middle of the wire rod (2) (the portion between the two drop-off prevention portions (4)), the wire spring (2) is housed inside the coil spring in a folded state.

The length of the portion of the wire rod (2) accommodated inside the coil springs (1a) and (1b) is such that when a tensile force is applied to the coil spring, the wire rod does not shift to plastic deformation. Is set so that the slack is eliminated (the wire is in a straight line).
Specifically, it can be set so that the slack of the wire is eliminated when the coil spring receives a tensile force of about half the elastic limit. In this case, for example, when the tensile elastic limit of the coil spring is 60 kgf, the wire rod is in a straight line when it receives a tensile force of about 30 kgf.

One end portions of the coil springs (1a) and (1b) have a conical shape that is reduced in diameter as in the first embodiment.
Thus, if the one end part of a coil spring is formed in a cone shape, the operation | work which loosens and accommodates a wire inside a coil spring can be performed easily, and manufacturing efficiency can be improved.

Next, based on FIG. 12 thru | or FIG. 14, the effect | action of the fall prevention tool of 5th embodiment which consists of the said structure is demonstrated.
First, in a normal state (a state in which no tensile force is applied), as shown in FIG. 12, the coil springs (1a) and (1b) have a natural length, and the wire (2) housed inside the coil spring is loose. It is in a state.
When a fall prevention target such as furniture is about to fall due to the occurrence of an earthquake or the like, a tensile force is applied to the coil springs (1a) and (1b) via the retaining portion (4) of the wire (2), and the coil spring expands. At the same time, the slack portion of the wire housed in the coil spring is slightly loosened and the degree of slackness is reduced (see FIG. 13).
Subsequently, when a tensile force is further applied to the coil springs (1a) and (1b), the coil spring further expands, but before the coil spring is plastically deformed (before reaching the elastic limit), it is accommodated inside the coil spring. The slack portion of the wire is fully extended and the wire becomes straight (see FIG. 14).

  Thus, before the coil spring is plastically deformed, the wire rod is not slackened and becomes a straight line, whereby a tensile load exceeding the elastic limit of the coil spring can be received by the wire rod. Therefore, the coil spring is not plastically deformed and stretched, the allowable amount of displacement is appropriately limited, and the furniture or the like can be effectively prevented from falling.

It is easy to sufficiently increase the tensile strength (breaking strength) of the wire relative to the elastic limit of the coil spring. Therefore, if the structure is such that the coil spring can receive a tensile force before the coil spring undergoes plastic deformation as in the fifth embodiment, while the wire is receiving a tensile force (the tensile force received is Since the displacement does not occur when the tensile strength is equal to or less than the tensile strength, setting the tensile strength of the wire to a high value greatly enhances the fall prevention effect of furniture and the like.
Even if the wire breaks, the furniture and the like are connected to the wall surface and the like unless the coil spring is broken, so there is a high possibility that the fall can be prevented.

The tipping prevention tool of the fifth embodiment is very effective when the weight of the tipping prevention object is large.
For example, let us consider a case where the weight of the object to be prevented from falling is 100 kg, the elastic limit of the coil spring is 60 kgf, and the tensile strength of the wire is 200 kgf.
In this case, in the structure as in the first embodiment, when the weight of the object to be prevented from falling is applied to the coil spring, the coil spring starts plastic deformation when the tensile force exceeds 60 kgf, and finally extends completely. End up. That is, since a large displacement amount that allows the coil spring to fully extend is allowed, it is not possible to prevent the fall.
On the other hand, in the structure of the fifth embodiment, the tensile force can be received by the wire before the tensile force reaches 60 kgf, that is, before the coil spring starts plastic deformation. It is not done and it is possible to prevent a fall.

  In the fifth embodiment, it is not impossible to increase the spring constant by increasing the thickness of the coil spring and to make the elastic limit of the coil spring larger than the tensile strength of the wire rod. There arises an inconvenience that the buffer function can hardly be exhibited.

In the present invention, in the fall prevention tool of the first to fifth embodiments, the entire surface of the coil spring can be covered with a cylindrical body.
15 and 16 show a case where this configuration is adopted in the overturn prevention device of the first embodiment. FIG. 15 shows a state before coating, and FIG. 16 shows a state after coating.

In the illustrated example, the cylindrical body (15) is composed of a pair of left and right cylindrical bodies (15a) (15b) formed from a soft material such as rubber or soft synthetic resin.
Both ends of the cylindrical body (15a) (15b) are open, but one end is greatly squeezed to have an inner diameter through which the fixed portion (5) cannot pass, and the other end is a coil spring ( 1a) (1b) has an inner diameter through which it can pass.

The other end of either the left or right cylindrical body (right cylindrical body (15b) in the illustrated example) is slightly squeezed and the other cylindrical body (left cylindrical body (15a) in the illustrated example). ) Can be fitted into the other end.
As a result, as shown in FIG. 16, it becomes possible to cover the entire surface of the coil spring by combining a pair of left and right cylindrical bodies, and it is possible to prevent injury by pinching a finger between the coil spring.

FIG. 17 is a view showing a fixing bracket (6) used by being fixed to a wall surface in the fall prevention device of the present invention, wherein (a) is a front view, (b) is a side view, and (c) is a perspective view. is there.
The fixing bracket (6) includes a flat plate portion (7) fixed along the wall surface, and an annular fixing portion provided at the end portion of the extension portion (9) or the wire rod (2) of the coil spring (1) described above. And (5) a hook-shaped locking portion (8) for locking and fixing.

The locking portion (8) includes a folded portion (8a) folded back in a substantially J shape upward from the lower end portion of the flat plate portion (7), and a retaining member formed at the tip of the folded portion (8a). Part (8b).
The retaining portion (8b) is formed wider than the folded portion (8a), and the angle (α) formed between the side of the folded portion and the side of the folded portion is formed at a right angle or an acute angle.

The fixing bracket (6) is an end portion of the extension portion (9) of the coil spring (1) or the wire rod (2) in a state in which the flat plate portion (7) is fixed to the wall surface (including a column) by screwing or the like. Is used by hooking an annular fixing portion (5) provided on the locking portion (8).
At this time, the retaining portion (8b) is wider at the tip of the locking portion (8) than the folded portion (8a), and the angle formed between the side and the side of the folded portion is a right angle or an acute angle. As a result, the fixing part (5) is prevented from coming off the locking part (8).

18 to 20 are views showing a preferable example of the usage state of the fall prevention device according to the present invention.
In addition, in these figures, although the fall prevention tool of 1st embodiment is shown, it can be used with the same form also about the fall prevention tool of other embodiment.

FIG. 18 is a view showing a state in which the fall prevention device according to the present invention is attached to the liquid crystal television (10).
In the illustrated example, one fixing part of the fall prevention tool is fixed by being hooked on a protruding part such as a screw provided on the back surface of the liquid crystal television (10), and the other fixing part is fixed to the wall surface (13) with screws. The liquid crystal television (10) and the wall surface (13) are connected to each other by a fall prevention tool by being hooked and fixed on the engaging portion of the metal fitting (6).

FIG. 19 is a view showing a state in which the fall prevention device according to the present invention is attached to the CRT television (11).
In the illustrated example, one fixing portion of the fall prevention device is fixed by hooking it onto a protruding portion provided on the curved side surface of the CRT television (11), and the other fixing portion is fixed to the wall surface (13) with screws. The cathode ray tube television (11) and the wall surface (13) are connected to each other by a fall prevention tool by being hooked and fixed on the engaging portion of the metal fitting (6).
In this example, two fall prevention tools are used.

FIG. 20 is a view showing a state in which the fall prevention tool according to the present invention is attached to the furniture (12).
In the illustrated example, one fixed part of the fall prevention tool is hooked and fixed to a protruding portion provided on the upper surface of the furniture (12), and the other fixed part is on the wall surface (13), specifically, in the wall surface. The furniture (12) and the pillar (14) are connected to each other by a fall-preventing tool by being hooked and fixed to the locking portion of the fixing metal fitting (6) fixed to the pillar (14) with screws.

As shown in FIGS. 18 to 20, the overturn prevention device according to the present invention can be fixed even if the object is separated from the wall surface (see FIG. 18), and can be fixed even if the object is curved. Yes (see FIG. 19), the object can be fixed even if it is separated from the pillar (see FIG. 20).
In addition, as a protrusion part for latching the fixing | fixed part of the fall prevention tool in a target object, you may utilize the screw and protrusion which existed originally, or newly use an adhesive agent, an adhesive, a screw, etc. A protrusion may be added.

  The present invention is used to prevent furniture, electrical products, and the like from falling down due to vibrations that occur when an earthquake occurs.

It is an external view which shows 1st embodiment of the fall prevention tool which concerns on this invention. It is a principal part expanded sectional view of the fall prevention tool of 1st embodiment. It is a principal part expanded sectional view of the fall prevention tool of 1st embodiment. It is an external view which shows 2nd embodiment of the fall prevention tool which concerns on this invention. It is an external view which shows 3rd embodiment of the fall prevention tool which concerns on this invention. It is a principal part expanded sectional view of the fall prevention tool of 3rd embodiment. It is a principal part expanded sectional view of the fall prevention tool of 3rd embodiment. It is an external view which shows 4th embodiment of the fall prevention tool which concerns on this invention. It is an external view which shows 4th embodiment of the fall prevention tool which concerns on this invention. It is a principal part expanded sectional view of the fall prevention tool of 4th embodiment. It is an external view which shows 5th embodiment of the fall prevention tool which concerns on this invention. It is a principal part expanded sectional view of the fall prevention tool of 5th embodiment. It is a figure explaining the effect | action of the fall prevention tool of 5th embodiment. It is a figure explaining the effect | action of the fall prevention tool of 5th embodiment. It is a figure which shows the state before coat | covering, when the structure which coat | covers a coil spring with a cylindrical body is employ | adopted in the fall prevention tool of 1st embodiment. It is a figure which shows the state after coat | covering in the case of employ | adopting the structure which coat | covers a coil spring with a cylindrical body in the fall prevention tool of 1st embodiment. It is a figure which shows the fixing metal fitting fixed to a wall surface in the fall prevention tool of this invention, Comprising: (a) is a front view, (b) is a side view, (c) is a perspective view. It is a figure which shows an example of the use condition of the fall prevention tool which concerns on this invention. It is a figure which shows an example of the use condition of the fall prevention tool which concerns on this invention. It is a figure which shows an example of the use condition of the fall prevention tool which concerns on this invention. It is a figure which shows the problem of the conventional fall prevention tool.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Coil spring 2 Wire material 3 Connection part 4 Drop prevention part 5 Fixing part 6 Fixing metal fitting 7 Flat plate part 8 Locking part 8a Folding part 8b Stopping part 9 Extension part 10 Liquid crystal television (object)
11 CRT TV (object)
12 Furniture (object)
13 Wall surface 14 Column 15 Tubular body

Claims (9)

A fall prevention tool for preventing the fall of the object by connecting the fall prevention object such as furniture and home appliances and the wall surface,
A coil spring and a wire rod inserted into the coil spring so as to be reciprocally movable;
The inner diameter of the coil spring is formed such that one end is smaller in diameter than the other end.
The wire is formed of a bendable material, and a leading end portion is formed with a slip prevention portion having a diameter smaller than the inner diameter of the other end of the coil spring and larger than the inner diameter of the one end. A fall prevention tool characterized in that a fixed portion to be fixed to the object or wall surface is formed at the end.   The coil spring is composed of two coil springs continuously formed on the same axis by one wire, and the wire at the connecting portion between the two coil springs is wound at a wider pitch than the coil spring. The fall prevention tool according to claim 1, wherein the fall prevention tool is not wound or wound.   The wire consists of two wires arranged on the same axis, the tip of one wire is inserted into the inside of one coil spring, and the tip of the other wire is inserted into the inside of the other coil spring. The fall prevention tool according to claim 2, wherein the fall prevention tool is provided.   An extension portion is formed extending from the other end portion of the coil spring in substantially the same axial direction as the wire, and the extension portion is formed by a wire forming a coil spring, and the fixing portion is formed at the tip portion thereof. The fall prevention tool according to claim 1 or 2, wherein   The wire is made of a single wire, and is housed inside the coil spring in a state where the middle portion of the wire is slack. When a tensile force is applied to the coil spring, the coil spring is plastic. 3. The overturn prevention device according to claim 2, wherein the wire rod is configured to be free from slackness before being deformed.   6. The overturn prevention tool according to claim 5, wherein one end portion of the coil spring is conically reduced in diameter.   The overturn prevention tool according to any one of claims 1 to 6, wherein the fixing portion is formed in an annular shape. It has a fixing bracket that is fixed to the wall,
The fixing bracket is formed with a hook-shaped locking portion capable of locking the fixing portion,
The locking portion includes a folded portion that is folded back substantially upward, and a retaining portion that is formed at the tip of the folded portion,
8. The overturn prevention device according to claim 7, wherein the retaining portion is formed wider than the folded portion, and an angle formed between a side of the folded portion and a side of the folded portion is a right angle or an acute angle. . The overturn prevention tool according to any one of claims 1 to 8, further comprising a cylindrical body that covers the entire surface of the coil spring.

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