JP2002068699A - Lifting/lowering device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lifting/lowering device having a reliable safety means preventing a lift member from dropping from a guide rail. SOLUTION: The lift member 4 is suspended by a cord body such as a belt 7 or a wire, and the cord body is wound on a rotatably arranged winding drum 9. A guide roller 5 provided on the lift member 4 is kept in rolling contact with the guide rail 2 vertically arranged along the lift passage 8 of the lift member 4, the winding drum 9 is rotated to wind or unwind the cord body, and the lift member 4 is lifted or lowered along the guide rail 2 in this lifting/ lowering device. A stopper 1 locking the lift member 4 dropping along the guide rail 2 when the cord body is cut is arranged at the lower end section in the vertical direction of the guide rail 2, a locking section 3 is bored at the lower end section of the guide rail 2, the stopper 1 is locked on the locking section 3, and the stopper 1 is fixed to the guide rail 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lifting device used for raising and lowering a shelf or the like, and more particularly, to a structure for preventing a lifting member from falling from a lifting passage.

[0002]

2. Description of the Related Art Conventionally, a lifting device for lifting a lifting member such as a shelf, as shown in FIG. 18, suspends both ends of a lifting member 4 with a belt 7 and winds the belt 7 into a cylindrical winding form. The winding drum 9 is wound around the drum 9 and the motor 15
A guide rail 2 is disposed vertically along an elevating passage 8 in which the elevating member 4 moves up and down, and the guide roller 5 rolled on the guide rail 2 is moved up and down by the elevating member. 4 is attached. In this lifting device,
By rotating the motor 15 by rotating the winding drum 9 and winding or rewinding the belt 7, the lifting member 4 is guided by the guide rail 2 while maintaining the horizontal state, and the lifting passage 8 is stably formed. It goes up and down.
Here, as an example of the elevating device, the one shown in FIG. 18 is one in which storage shelves can be freely put in and out of a storage box 13 arranged in a top bag of a kitchen or the like, and the guide rail 2 is a storage box. The guide rollers 5 are mounted on brackets 17 provided at both ends of the upper part of the shelf.

Further, in the above-mentioned lifting device, as a safety means for preventing the lifting member 4 from falling off from the guide rail 2 when the belt 7 for suspending the lifting member 4 is broken,
A stopper 1 ′ is provided at the lowermost end of the guide rail 2 to lock the elevating member 4 that has fallen along the guide rail 2 due to breakage. The stopper 1 has a horizontal piece 1a and a vertical piece 1b 'and is formed in an L-shaped vertical section. The horizontal piece 1a' is arranged so as to cover the guide rail 2 from below, and the vertical piece 1b ' It is fixed to the lower end of the inner side wall 13a of the storage box 13 via a fixing tool 10 such as a screw. By the stopper 1 ', the guide roller 5 rolled downward along the guide rail 2 comes into contact with the horizontal piece 1a' of the stopper 1 'at the lowermost end of the guide rail 2, and the lifting member 4 is engaged by the stopper 1'. It will be stopped.

[0004]

As described above, in this elevating device, a safety means for preventing the elevating member 4 from falling off the guide rail 2 is provided, but the stopper 1 'falls along the guide rail 2. In order to lock the elevating member 4, the stopper 1 'is structurally insecure in its strength or its mounting strength. That is, the impact load of the elevating member 4 that has fallen is applied to the horizontal piece 1 of the stopper 1 '.
Since a shearing force is concentrated on the connecting portion between the a 'and the vertical piece 1b' and the fixing tool 10 such as a screw for fixing the vertical piece 1b 'to the inner side wall 13a of the storage box 13. In addition, the stopper 1 'may be broken by the concentrated shearing force.

The present invention has been made in view of the above points, and has as its object to provide a lifting device provided with a reliable safety means for preventing a lifting member from falling off a guide rail. is there.

[0006]

According to a first aspect of the present invention, there is provided an elevating device, comprising: a lifting member which is suspended by a belt such as a belt and a wire; Is wound around a take-up drum 9 rotatably arranged, and the lifting member 4
The guide roller 5 provided on the elevating member 4 is rolled on the guide rail 2 disposed vertically along the elevating passage 8, and the winding drum 9 is rotated to wind up or out the rope. In an elevating device configured to rewind and elevate the elevating member 4 along the guide rail 2,
A stopper 1 that locks the elevating member 4 that has fallen along the guide rail 2 due to the cut of the cord is disposed at the lower end of the guide rail 2 in the vertical direction, and is locked at the lower end of the guide rail 2. The stopper 3 is locked to the locking portion 3 and the guide rail 2 and the stopper 1 are fixed to each other. As a result, the impact load of the elevating member 4 is applied to the stopper 1 that receives the elevating member 4 that has fallen along the guide rail 2 due to the cut of the cord body. Since the stopper 1 and the guide rail 2 can receive the impact load of the elevating member 4 by being fixed while being locked to the provided locking portion 3, the structural strength of the stopper 1 against the load can be improved. Can be done.

According to a second aspect of the present invention, in the first aspect, the bottom plate 2a of the guide rail 2 is arranged along the installation surface 6 on which the guide rail 2 is provided, and
a is provided with a locking portion 3 cut out in a horizontal slit shape, and a horizontal piece 1a of a stopper 1 having a vertical section formed in an L shape or an inverted L shape is inserted through the locking portion 3 and a vertical piece of the stopper 1 is provided. 1b is interposed between the bottom plate 2a and the installation surface 6, and the vertical piece 1b is sandwiched between the bottom plate 2a and the installation surface 6 and is fixed to the installation surface 6 integrally with the bottom plate 2a.
As a result, the impact load of the elevating member 4 is applied to the stopper 1 that receives the elevating member 4 that has fallen along the guide rail 2 due to a break in the cord body.
Of the stopper 1 and the vertical piece 1b of the stopper 1 is interposed between the bottom plate 2a and the installation surface 6, and the vertical piece 1b is sandwiched between the bottom plate 2a and the installation surface 6. And fixed to the installation surface 6 integrally with the bottom plate 2a, so that the impact load of the elevating member 4 can be reduced by the stopper 1, the guide rail 2
Of the stopper 1 can be structurally improved with respect to the load of the stopper 1, and when the guide rail 2 is fixed to the installation surface 6, the stopper is held together. Since 1 is also fixed to the installation surface 6 and the guide rail 2, the assemblability is also improved.

According to a third aspect of the present invention, in the lifting device according to the first aspect, a protruding plate 2b protruding forward from a bottom plate 2a of the guide rail 2 along the installation surface 6 on which the guide rail 2 is disposed is provided. A horizontal slit-shaped notch portion 3 extending from the bottom to the bottom plate 2a is provided, and a horizontal piece 1a of a stopper 1 having a vertical cross section formed in an L-shape or an inverted L-shape is inserted into the lock portion 3 and the stopper 1 is inserted. Of vertical piece 1b of bottom plate 2
a, the vertical piece 1b is fixed to the installation surface 6 integrally with the bottom plate 2a via a fixing tool 10 such as a screw. Thus, the impact load of the lifting member 4 is applied to the stopper 1 that receives the lifting member 4 that has fallen along the guide rail 2 due to the cut of the cord body, but the guide rail 2 is installed. A protruding plate 2b protruding forward from a bottom plate 2a of the guide rail 2 along the surface 6 is provided with a locking portion 3 cut out in a horizontal slit shape from the front end to the bottom plate 2a, and has a vertical cross section of an L shape or an inverted L shape. Stopper 1 formed
Of the stopper 1 and the vertical piece 1b of the stopper 1 along the bottom plate 2a.
Is fixed to the installation surface 6 integrally with the bottom plate 2a via a fixing tool 10 such as a screw, so that the impact load of the elevating member 4 can be received by the stopper 1 and the protruding plate 2b of the guide rail 2, and the stopper 1 It is capable of structurally improving the proof stress against a load, and the stopper 1 is fixed to the mounting surface 6 and the guide rail 2 when the guide rail 2 is fixed to the mounting surface. Therefore, the assemblability is also improved.

According to a fourth aspect of the present invention, there is provided the elevating device according to any one of the first to third aspects, wherein when the elevating member is dropped along the guide rail, the stopper is moved.
The contact receiving portion 11 is provided at a portion below the guide roller 5 of the elevating member 4. As a result, the portion of the lifting member 4 that has fallen along the guide rail 2 due to the breakage of the cord member and that comes into contact with the stopper 1 can be used as the contact receiving portion 11. The contact can be reliably avoided, and the life of the guide roller 5 can be extended.

According to a fifth aspect of the present invention, there is provided the elevating device according to any one of the first to third aspects, wherein the elevating member is moved when the elevating member falls along the guide rail.
A contact piece 1c for abutting against the root portion of the roller shaft 12 protruding from the stopper 1 is provided to protrude upward from the front end of the stopper 1. As a result, the contact piece 1c projecting upward from the front end of the stopper 1 comes into contact with the root portion of the roller shaft 12 of the elevating member 4 that has fallen along the guide rail 2 due to a cut of the cord body. Thus, the contact between the guide roller 5 and the stopper 1 can be reliably avoided, and the life of the guide roller 5 can be extended.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on embodiments shown in the accompanying drawings. The present invention relates to an elevating device. In the embodiments described below, an elevating shelf device using the above-described elevating device is described. This elevating rack device is installed, for example, as a part of a top bag of a kitchen or the like, and is used by storing kitchen utensils, tableware, and the like in the elevating racks.

FIGS. 1 to 4 show an embodiment of the present invention. As shown in FIG. 4, this is an elevating device that allows the elevating member 4 such as a shelf to be freely taken in and out vertically through an opening provided on the lower surface of the box-shaped storage box 13.
Are suspended by a pair of belts 7, and a pair of pulleys 14 are provided on both ends of an inner upper wall 13b of the storage box 13 at a position vertically above the portion of the lifting member 4 to which the pair of belts 7 are connected. The belt 7 that suspends the elevating member 4 is pulled up and down from the left and right sides by a pulley 14 to the winding drum 9 disposed at the center of the inner upper wall 13 b of the storage box 13, and the winding direction is reversed. It is something that is wrapped around. In this way, the belt 7 is extended vertically upward from the lifting member 4 and the pulley 14
The belt 7 is arranged so as to be bent substantially at a right angle and approach the winding drum 9 from a parallel direction, so that a load is applied to the winding drum 9 symmetrically from the pair of belts 7. Things. This winding drum 9 is mounted on a drive shaft 16 of a motor 15. When the motor 15 is driven, the winding drum 9 that rotates integrally with the drive shaft 16 winds and rewinds the pair of belts 7 and moves the lifting member 4 up and down while maintaining the horizontal state. It is.

The elevating member 4 which is moved up and down by the pair of belts 7 is provided with a guide roller 5 on the elevating member 4 and a guide rail 2 on an installation surface 6 in order to move up and down through a certain elevating passage 8. The guide roller 5 is connected to the guide rail 2
To move the lifting member 4 up and down. In this example, the lifting member 4 is moved up and down to be stored inside the storage box 13 installed in a kitchen top bag or the like, or to be positioned below the storage box 13. Hereinafter, the rolling contact structure between the guide rail 2 and the guide roller 5 will be described in detail.

The guide rail 2 is a vertically extending frame having a substantially U-shaped cross section and a pair of protruding plates 2b projecting forward from the bottom plate 2a. Flanges are formed at both ends in the width direction of the bottom plate 2a. A portion 18 is formed. The grounding portion 18 is located behind the center of the bottom plate 2a in the width direction, and the pair of grounding portions 18 and the bottom plate 2a
A groove 19 is formed in a portion surrounded by a central rear portion of the width direction.
Is formed.

The guide rail 2 constructed as described above is disposed vertically on the inner side walls 13a of the storage box 13 as the installation surface 6. This is done by aligning the bottom plate 2a along the installation surface 6, grounding the grounding portion 18 of the bottom plate 2a to the installation surface 6, and fixing the grounding portion 18 and the installation surface 6 with a fixing tool 26 such as a screw. It is something to be done. At this time, the groove-like portion 19 forms a vertical gap 20 surrounded by four sides in the horizontal direction by the pair of grounding portions 18, the rear surface of the central portion in the width direction of the bottom plate 2 a and the installation surface 6.

On the other hand, the guide rollers 5 are mounted on brackets 17 provided at both ends of the elevating member 4.
The roller 17 is rotatably supported at the tip of a roller shaft 12 projecting from the bracket 17 facing the guide rail 2 in the direction of the guide rail 2. In this example, the guide roller 5 is disposed in the hollow space 21 between the pair of protruding plates 2b of the guide rail 2 described above,
The pair of protruding plates 2b is grounded and pivots.

By bringing the guide roller 5 into rolling contact with the guide rail 2 as described above, the lifting member 4 can be more reliably stabilized and can be raised and lowered through a certain lifting passage 8. In this example, the elevating passage 8 in which the elevating member 4 moves up and down is located at a lower end position where kitchen utensils and tableware can be stored in the elevating member 4 as a shelf. The position is such that it is housed inside.

The lifting device as described above includes a lifting member 4
A safety means is provided to prevent the lifting member 4 from falling off the guide rail 2 even when the lifting member 4 falls along the guide rail 2 due to the breakage of the belt 7 suspending the. As this safety means, a stopper 1 is provided at the lower end of the guide rail 2 in the vertical direction, and the lifting member 4 that has fallen along the guide rail 2 is locked by the stopper 1. Hereinafter, the safety means will be described in detail.

As described above, the stopper 1 as a safety means is provided at the lower end of the guide rail 2 in the vertical direction. At the lower end of the guide rail 2 in the vertical direction, the stopper 1 is horizontal to the bottom plate 2a of the guide rail 2. A locking portion 3 cut out in a slit shape is formed so as to penetrate the bottom plate 2a forward and backward. The stopper 1 is locked to the locking portion 3. The stopper 1 is an L-shaped piece formed by abutting the rear end of the horizontal piece 1a and the lower end of the vertical piece 1b, or formed by abutting the rear end of the horizontal piece 1a and the upper end of the vertical piece 1b. The horizontal piece 1a is inserted into the locking portion 3 and the vertical piece 1b is positioned in the groove portion 19 and locked on the guide rail 2. When the guide rail 2 is fixed to the installation surface 6 in this state, the vertical piece 1b located in the groove 19 is located in the space 20, and the rear surface of the bottom plate 2a and the installation surface 6
It is sandwiched between and. By holding the vertical piece 1b between the bottom plate 2a and the installation surface 6 in this manner, the stopper 1 is integrated with the bottom plate 2a while the horizontal piece 1a is locked by the locking portion 3 of the bottom plate 2a. Is fixed to the surface.
At this time, the horizontal piece 1a is connected to the bottom plate 2a and a pair of protruding plates 2a.
b is arranged at a position to close the hollow space 21 formed by b.

The stopper 1 fixed to the guide rail 2 as described above locks the elevating member 4 that has fallen along the guide rail 2 because the belt 7 has been cut. The impact load of the elevating member 4 is applied to the stopper 1 to be received. The horizontal piece 1a of the stopper 1 is inserted through the locking portion 3 and the stopper 1
Is interposed between the bottom plate 2a and the installation surface 6,
Since the vertical piece 1b is sandwiched between the bottom plate 2a and the installation surface 6 and is fixed to the installation surface 6 integrally with the bottom plate 2a, the impact load of the elevating member 4 can be reduced by the stopper 1, the bottom plate 2a of the guide rail 2 and The stopper 1 can be received on the installation surface 6, and the resistance of the stopper 1 to the impact load of the lifting member 4 can be structurally improved. Further, when the guide rail 2 is fixed to the installation surface 6, the guide rail 2 is simply inserted into the locking portion 3 and sandwiched between the guide rail 2 and the installation surface 6 with the vertical piece 1 b interposed therebetween. Therefore, the assemblability of attaching the stopper 1 to the guide rail 2 and the installation surface 6 is also improved.

The guide roller 5 is generally formed of resin, and the stopper 1 and the guide rail 2 are formed of metal. Here, when the lifting member 4 that has fallen along the guide rail 2 due to the breakage of the belt 7 comes into contact with the stopper 1 with an impact, the guide roller 5 of the lifting member 4 comes into contact with the horizontal piece 1 a of the stopper 1. Since the guide rollers 5 are in contact with each other, there is a possibility that the guide rollers 5 made of resin may be damaged. However, the length of the horizontal piece 1a of the stopper 1 protruding forward is increased. It is also preferable that the lifting member 4 can be locked by contacting the roller shaft 12.

Hereinafter, another embodiment of the present invention will be described. In other examples of the following embodiments, the guide rail 2 and the stopper 1 of the above embodiment are different from each other in the mounting structure of the stopper 1 to the guide rail 2 and the installation surface 6, and the like. Will be omitted, and differences will be mainly described.

In another example of the embodiment shown in FIGS. 5 to 9, the guide rail 2 is a frame that extends vertically with a substantially T-shaped cross section in which a protruding plate 2b projects forward from the center in the width direction of the bottom plate 2a. A mounting recess 22 is formed at both ends in the width direction of the bottom plate 2a. The mounting recess 22 is provided with a mounting hole 24. At the lower end in the vertical direction of such a guide rail 2, a locking portion 3 cut out in a horizontal slit shape from the front end to the bottom plate 2a is formed in the projecting plate 2b.

A guide roller 5 mounted on the elevating member 4 is brought into rolling contact with the guide rail 2. In this embodiment, a pair of roller shafts 12 project from both ends of the elevating member 4 in the width direction of the bracket. The protruding plate 2b of the guide rail 2 is positioned between the pair of guide rollers 5 positioned at the tip of the roller shaft 12, and is held between the pair of guide rollers 5. That is, the pair of guide rollers 5 are in contact with both surfaces of the protruding plate 2b.

The stopper 1 is an L-shaped piece formed by abutting the rear end of the horizontal piece 1a and the lower end of the vertical piece 1b, or the rear end of the horizontal piece 1a and the upper end of the vertical piece 1b. The vertical piece 1b is provided with a vertically extending slit-shaped notch 23 at the center in the width direction of the vertical piece 1b. Part 23
A pair of mounting holes 25 penetrates at positions on both sides.

The stopper 1 and the guide rail 2 described above are fixed to the installation surface 6. First, the stopper 1 is arranged on the guide rail 2. This is performed so that the stopper 1 is inserted into the locking portion 3 of the guide rail 2 from the front to the rear. More specifically, the protruding plate 2b of the guide rail 2 is inserted into the notch 23 provided in the vertical piece 1b of the stopper 1, and the horizontal piece 1a of the stopper 1 is inserted and mounted on the locking portion 3 of the guide rail 2. The vertical piece 1b of the stopper 1 is attached to the bottom plate 2 of the guide rail 2.
The contact is made so as to conform to a. As described above, the stopper 1 is arranged at a predetermined position on the guide rail 2. Next, the guide rail 2 in which the stopper 1 is arranged at a predetermined position is fixed to the installation surface 6. This is such that the mounting hole 25 of the stopper 1 and the mounting hole 24 of the guide rail 2 disposed at a predetermined position of the guide rail 2 penetrate, and the fixing holes 10 such as screws are inserted into the mounting holes 24 and 25. Is screwed into the installation surface 6 by inserting
The stopper 1 and the guide rail 2 are integrally fixed to the installation surface 6.

The stopper 1 serves as a safety means for locking the elevating member 4 that has fallen along the guide rail 2 due to the breakage of the belt 7 in the same manner as in the previous embodiment. When the lifting member 4 dropped along the guide rail 2 is locked by the stopper 1, the impact load applied to the stopper 1 from the lifting member 4 is reduced by the guide rail. The stopper 1 is received by the horizontal piece 1a of the stopper 1 placed on the locking portion 3, that is, the stopper 1 can be received by the horizontal piece 1a of the stopper 1 and the protruding plate 2b of the guide rail 2. This is to structurally improve the proof stress against the load. When the guide rail 2 is fixed to the installation surface 6, the stopper 1 is held together with the installation surface 6 and the guide rail 2.
And the assembling property is also improved.

In the other embodiment shown in FIGS. 10 to 12, in addition to the other embodiments of FIGS. 5 to 9 described above, An L-shaped contact receiving portion 11 is formed at the lower end portion so as to protrude toward the guide rail 2. Since the contact receiving portion 11 is provided at the lowermost end of the bracket 17,
When the lifting member 4 falls along the guide rail 2 due to the breakage of the belt 7, and the stopper 1 provided at the lower end of the guide rail 2 in the vertical direction locks the lifting member 4, the horizontal piece of the stopper 1 1a is designed to abut the contact receiving member 11 described above. In other words, the guide roller 5 does not need to directly contact the stopper 1. For example, when the guide roller is formed of resin, the impact between the horizontal piece 1a of the stopper 1 and the guide roller 5 is generated. This can prevent the guide roller 5 from being damaged by the contact. As described above, the contact receiving portion 11 is provided below the guide roller 5 of the elevating member 4, so that the contact between the guide roller 5 and the stopper 1 can be reliably avoided, and the long life of the guide roller 5 can be ensured. Can be achieved. The contact receiving portion 11
May be formed by notching a part of the bracket 17 and bending it in the direction of the guide rail 2.

In the other embodiment shown in FIGS. 13 to 17, in the other embodiment of FIGS. 5 to 9 described above, the abutment piece is located upward from the front end of the horizontal piece 1a of the stopper 1. 1c is projected. If the elevating member 4 falls along the guide rail 2 due to the breakage of the belt 7, the elevating member 4 is received by the contact piece 1c of the stopper 1 and locked. Roller 5
Is in contact with both sides of the protruding plate 2b of the guide rail 2, so that the contact piece 1c comes into contact with the root portion of the roller shaft 12 protruding from the bracket 17. That is,
Also in this example, as in the other examples of the embodiment shown in FIGS. 10 to 12, the contact between the guide roller 5 and the stopper 1 can be reliably avoided, and the life of the guide roller 5 can be extended. It can be planned.

[0030]

As described above, in the elevating device according to the first aspect of the present invention, the elevating member is suspended by a cord such as a belt or a wire, and the cord is rotatably disposed. The guide roller provided on the elevating member is rolled on a guide rail disposed vertically along the elevating passage of the elevating member, and the cable is rotated by rotating the winding drum. In an elevating device in which the body is hoisted or unwound and the elevating member is moved up and down along the guide rail, a stopper for locking the elevating member that has been cut along the guide rail due to breakage of the cord body is provided. Since the guide rail is arranged at the lower end in the vertical direction of the guide rail, and a stopper is formed at the lower end of the guide rail, the stopper is locked to the stopper and the guide rail and the stopper are fixed. The strip is broken The stopper that locks the elevating member that has fallen along the guide rail is subjected to the impact load of the elevating member, but the stopper is fixed while engaging with the engaging portion formed in the guide rail. Thus, the impact load of the elevating member can be received by the stopper and the guide rail, and the resistance of the stopper to the impact load of the elevating member can be structurally improved.

According to a second aspect of the present invention, in addition to the effect of the first aspect, in addition to the effect of the first aspect, the bottom plate of the guide rail is arranged along the installation surface on which the guide rail is provided, and the bottom plate is formed in a horizontal slit shape. A notched locking portion is provided, and a horizontal piece of a stopper having an L-shaped or inverted L-shaped vertical section is inserted through the locking portion, and a vertical piece of the stopper is interposed between the bottom plate and the installation surface. Since the vertical piece is sandwiched between the bottom plate and the installation surface and is fixed to the installation surface integrally with the bottom plate, the stopper is used to lock the elevating member that has been cut along the guide rail due to a cut of the cord. Although the impact load of the elevating member is applied, the horizontal piece of the stopper is inserted into the locking portion, and the vertical piece of the stopper is interposed between the bottom plate and the installation surface. Hold the vertical piece with the installation surface integrally with the bottom plate By being fixed, the impact load of the elevating member can be received by the stopper, the bottom plate of the guide rail, and the installation surface, and the withstand force of the stopper against the impact load of the elevating member can be structurally improved. In addition, when the guide rail is fixed to the installation surface, the stopper is also fixed to the installation surface and the guide rail, so that the assemblability is improved.

According to a third aspect of the present invention, in addition to the effect of the first aspect, in addition to the effect of the first aspect, the projecting plate protruding forward from the bottom plate of the guide rail along the installation surface on which the guide rail is disposed is provided from the front end. A locking portion cut into a horizontal slit shape leading to the bottom plate is provided, and a horizontal piece of a stopper having an L-shaped or inverted L-shaped vertical section is inserted through the locking portion, and a vertical piece of the stopper is aligned with the bottom plate. Since the vertical piece is fixed to the installation surface integrally with the bottom plate via a fixing tool such as a screw, the stopper for locking the elevating member that has fallen along the guide rail due to a cut of the cord body has been described. Although the impact load of the elevating member is applied, the locking part cut out in a horizontal slit shape from the front end to the bottom plate is provided on the protruding plate protruding forward from the bottom plate of the guide rail along the installation surface where the guide rail is arranged. And the vertical section is L Alternatively, a horizontal piece of a stopper formed in an inverted L-shape is inserted into the locking portion, and a vertical piece of the stopper is made to extend along the bottom plate, and the vertical piece is integrated with the bottom plate via a fixing tool such as a screw on the installation surface. By being fixed, the impact load of the elevating member can be received by the stopper and the protruding plate of the guide rail, and the resistance of the stopper to the impact load of the elevating member can be structurally improved. When the rail is fixed to the installation surface, the stopper is also fixed to the installation surface and the guide rail, so that the assemblability is improved.

The lifting device according to claim 4 of the present invention provides the effect of any of claims 1 to 3,
A contact receiving part is provided below the guide roller of the elevating member when the elevating member falls along the guide rail. The contact portion between the elevating member and the stopper is used as the contact receiving portion on the elevating member side, that is, the contact between the guide roller and the stopper can be reliably avoided, and the life of the guide roller is extended. Is what you can do.

According to a fifth aspect of the present invention, in addition to the effect of any one of the first to third aspects,
When the elevating member falls along the guide rail, a contact piece that comes into contact with the root portion of the roller shaft protruding from the elevating member protrudes upward from the front end of the stopper, so the cable is cut. The part where the elevating member dropped along the guide rail and the stopper comes into contact with the stopper is used as the contact piece on the stopper side and at the base of the roller shaft on the elevating member side. The contact between the guide roller and the stopper can be reliably avoided, and the life of the guide roller can be extended.

[Brief description of the drawings]

FIG. 1 is a top view of a rolling contact portion between a guide rail and a guide roller according to an embodiment of the present invention.

FIG. 2 is a perspective view of a guide rail and a stopper according to the first embodiment;

FIG. 3 is a side sectional view showing a state in which the guide roller is locked by a stopper.

FIG. 4 is an overall front view of the lifting device.

FIG. 5 is a perspective view of a guide rail and a stopper showing another example of the embodiment of the present invention.

FIG. 6 is a side sectional view showing a state where the guide roller is locked by a stopper.

7A and 7B show a state where the guide rail and the stopper are fixed to the installation surface of the above, wherein FIG. 7A is a top sectional view and FIG. 7B is a side sectional view.

FIG. 8 is an overall front view of the lifting device.

FIG. 9 is a top view of FIG. 8;

FIG. 10 is a side sectional view showing a state in which a guide roller according to still another example of the embodiment of the present invention is locked by a stopper.

FIG. 11 is an overall front view of the lifting device.

FIG. 12 is a top view of FIG. 11;

FIG. 13 is a perspective view of a guide rail and a stopper showing still another example of the embodiment of the present invention.

FIG. 14 is a side sectional view showing a state in which the guide roller is locked by a stopper.

15A and 15B show a state where the guide rail and the stopper are fixed to the installation surface of the same, wherein FIG. 15A is a top sectional view and FIG. 15B is a side sectional view.

FIG. 16 is an overall front view of the lifting device.

FIG. 17 is a top view of FIG. 16;

FIG. 18 is an overall front view of a lifting device showing a conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Stopper 1a Horizontal piece 1b Vertical piece 2 Guide rail 2a Bottom plate 2b Projection plate 3 Locking part 4 Elevating member 5 Guide roller 6 Installation surface 7 Belt 8 Elevating passage 9 Winding drum 10 Fixture 11 Contact receiving part 12 Roller shaft

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tetsuji Niiyama 1048 Kadoma Kadoma, Osaka Pref.Matsushita Electric Works, Ltd. 72) Inventor Kenji Adachi 1048 Kazuma Kadoma, Osaka Pref. Matsushita Electric Works Co., Ltd.

Claims (5)

[Claims] An elevating member is hung by a cord such as a belt or a wire, and the cord is wound around a rotatable winding drum, and extends vertically along an elevating passage of the elevating member. The guide roller provided on the elevating member is brought into rolling contact with the provided guide rail, and the winding drum is rotated to wind up or rewind the cord, and the elevating member is moved up and down along the guide rail. In the lifting device configured as described above, a stopper that locks the lifting member that has fallen along the guide rail due to breakage of the rope member is disposed at the lower end in the vertical direction of the guide rail, and is provided at the lower end of the guide rail. An elevating device, wherein a locking portion is formed, the stopper is locked to the locking portion, and the guide rail and the stopper are fixed. 2. A bottom plate of the guide rail is provided along an installation surface on which the guide rail is provided, and a locking portion cut out in a horizontal slit shape is provided on the bottom plate to form an L-shaped or inverted L-shaped vertical cross section. Insert the horizontal piece of the stopper into the above-mentioned locking part, interpose the vertical piece of the stopper between the bottom plate and the installation surface, sandwich the vertical piece between the bottom plate and the installation surface, and install it integrally with the bottom plate The lifting device according to claim 1, wherein the lifting device is fixed to a surface. 3. A protruding plate protruding forward from a bottom plate of the guide rail along an installation surface on which the guide rail is provided, is provided with a locking portion cut out in a horizontal slit shape from a front end to the bottom plate, and has an L-shaped vertical cross section. Alternatively, a horizontal piece of a stopper formed in an inverted L-shape is inserted into the locking portion, and a vertical piece of the stopper is made to extend along the bottom plate, and the vertical piece is integrated with the bottom plate via a fixing tool such as a screw on the installation surface. The lifting device according to claim 1, wherein the lifting device is fixed. 4. A lift receiving member for contacting a stopper when the lifting member falls along the guide rail is provided in a portion below the guide roller of the lifting member. 3. The elevating device according to any one of 3. 5. A stopper for projecting upward from a front end portion of a stopper, the contact piece being brought into contact with a root portion of a roller shaft projecting from the elevating member when the elevating member falls along the guide rail. The lifting device according to any one of claims 1 to 3, wherein