JP2001340401A - Supporting structure of blet for care lift - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent defects of a belt without increasing the number of parts. SOLUTION: In a supporting structure of the belt for a care lift in which a drum 6 that supports the belt which is run out or wound up and a guide part 8 that guides the running out part of the belt 5 under the drum 6 are provided, the guide part 8 is dislocated depending on the tension of the belt 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt support structure for a care lift used for a care lift on which elderly people, patients and the like are placed.

[0002]

2. Description of the Related Art Conventionally, there is a belt support structure of this kind for a care lift as shown in FIG. Reference numeral 101 denotes a rotating shaft for transmitting the rotating motion of the motor 102, and the rotating speed of the rotating shaft 101 is reduced by the speed reducer 103.
Of the frame 1
04 is rotatably supported. This rotating shaft 10
A drum 1 holding a belt 105 that is fed or wound up by the rotation of a rotating shaft 101
06 is provided. The drum 106 has a flange 107 formed at an axial end.

Reference numeral 108 denotes an introduction guide, which is formed in a roll shape and which is supported on the guide guide shaft 1 erected on the frame 104.
At 09, it is rotatably supported below the drum 106. Reference numeral 110 denotes an auxiliary guide which is formed in a roll shape like the introduction guide 108 and is rotatably supported below the drum 106 by an auxiliary guide support shaft 111 erected on the frame 104. And 108 with a slight gap therebetween. In a gap between the introduction guide 108 and the auxiliary guide 110, a belt 105 fed from the drum 106 is guided and passed.

Numeral 112 denotes a drum press, which is formed in a roll shape and is rotatable by a drum press support shaft 115 connected via a connecting piece 114 to a drum press support 113 erected on the frame 104. Supported. The drum retainer 112 presses the belt 105 toward the drum 106 to prevent a problem that the belt 105 after being wound is loosened and entangled.

A tensioner 116 is formed in a roll shape, and is rotatably supported by a tensioner support shaft 118 connected to a guide shaft 117 by a connecting piece 117 so as to be rotatable.
Between the belt 105 and the feeding portion of the belt 105. This tensioner support shaft 118
Is a spring post 11 erected on the frame 104.
9 is connected to the belt 105 by a spring 120.

[0006] The tensioner 116 is a belt 105
Is displaced to a position where the tension of the spring 120 and the urging force of the spring 120 are balanced. That is, as the tension of the belt 105 is weaker, the tensioner 116 is biased by the spring 120 so that the belt 105 is
19, and the belt 1
05 as the tension of the spring post 11 increases.
Displaced away from 9. Therefore, the distance between the tensioner 116 and the spring post 119 changes according to the tension of the belt 105.

Reference numeral 121 denotes a limit switch.
04 (not shown), a tensioner 11
6 is provided at a predetermined position opposite to the spring post 119 with the tensioner 116 interposed therebetween, and is opened and closed by a tensioner 116 displaced according to the tension of the belt 105. Therefore, the displacement state of the tensioner 116, that is, the tension of the belt 105 can be detected by the open / close state of the limit switch 121.

When it is detected that the belt 105 is not tensioned by detecting the tension of the belt 105, it is determined that the belt 105 has been extended to the lower limit position, and the belt 105 The rotation of the motor 102 can be controlled so as not to be extended beyond the state.

Therefore, the belt 105 can be always fed or wound up while the belt 105 is under tension, and problems such as twisting and entanglement do not occur.

[0010]

In the above-described belt support structure of the conventional nursing care lift, the tensioner 116 is required to determine whether or not the belt 105 is tensioned, and the number of parts is large. turn into.

Further, a drum holder 112 is required to prevent the belt 105 wound around the drum 106 from being loosened and entangled, and the number of parts increases.

The present invention has been made in view of the above points, and an object of the present invention is to provide a belt support structure of a nursing care lift capable of preventing a belt failure without increasing the number of parts. It is in.

[0013]

In order to solve the above-mentioned problems, a belt support structure for a care lift according to the present invention comprises a drum for holding a belt to be fed or wound, and a belt below the drum. In a belt support structure for a nursing care lift having a guide portion for guiding a feeding portion, the guide portion is configured to be displaced in accordance with the tension of the belt.

According to a second aspect of the present invention, there is provided a nursing care lift belt supporting structure, comprising: a drum for holding a belt to be fed or wound up; and a guide portion for guiding a feeding portion of the belt below the drum. In the belt support structure, a pressing portion for pressing the belt toward the drum is provided integrally with the guide portion.

According to a third aspect of the present invention, in the belt support structure for a care lift according to the second aspect, the guide portion is displaced in the pressing direction in accordance with the tension of the belt. The part is provided integrally.

According to a fourth aspect of the present invention, there is provided the belt support structure for a care lift according to the third aspect, wherein an urging portion for urging the pressing portion in the pressing direction is provided on the guide portion. By connecting, the guide portion is configured to be displaced along the pressing direction according to the tension of the belt.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A belt support structure for a care lift according to an embodiment of the present invention will be described below with reference to FIGS.

Reference numeral 1 denotes a rotating shaft for transmitting the rotating motion of the motor 2, the rotating speed of which is reduced by the speed reducer 3 of the motor 2.
It is rotatably supported by the frame 4. A drum 6 that holds a belt 5 that is fed or wound up by the rotation of the rotation shaft 1 is provided at the tip of the rotation shaft 1. The drum 6 has a flange 7 formed at a boundary with the rotating shaft 1.

Reference numeral 8 denotes an introduction guide (guide portion), which extends near the outer peripheral edge of the drum 6 along the radial direction of the introduction portion 8a, the tension detection lever 8b penetrating the introduction portion 8a, and the introduction portion 8a. The pressing portion 8c is integrated. The tension detection lever 8b is rotatably supported along a horizontal plane below the drum 6 by an introduction guide support shaft 9a provided at a distal end of an L-shaped support member 9 erected on the frame 4. The distal end portion is loosely inserted into an oblong through hole 4b provided in a continuous portion 4a from the frame 4.

The center of the guide 8 in the direction in which the pressing portion 8c extends is a spring post 10 standing upright on the frame 4 on the opposite side of the belt 5 fed from the drum 6.
Is urged toward the belt 5 by being connected by a spring (biasing portion) 11. Due to this urging force, the pressing portion 8a of the introduction guide 8 prevents the leading end in the extending direction pressing the belt 5 toward the drum 6, and prevents the belt 5 after winding up from becoming loose and entangled. .

As described above, the center of the pressing portion 8c is connected to the spring 11, so that the introduction guide 8 is displaced in the pressing direction of the pressing portion 8c.

Further, the guide 8 is displaced by rotating the tension detecting lever 8b along the horizontal plane so that the tension of the belt 5 and the urging force of the spring 11 are balanced. That is, the introduction guide 8 is displaced so as to bend toward the spring post 10 by being urged by the spring 11 as the tension of the belt 5 becomes weaker, and conversely, the tension of the belt 5 is reduced. As you get stronger,
It is displaced away from the spring post 10. Therefore, the introduction guide 8 is moved according to the tension of the belt 5.
The distance from the spring post 10 will change.

Reference numeral 12 denotes an auxiliary guide, which is formed in a roll shape and which is an auxiliary guide support shaft 13 erected on the frame 4.
In addition, since it is rotatably supported below the drum 6, it faces the introduction portion 8a of the introduction guide 8 with a small gap therebetween. These introduction guide 8 and auxiliary guide 12
In the gap between the belt 5 and the belt 5
Is guided through.

Reference numeral 14 denotes a limit switch, which is provided at a predetermined position between the distal end of the tension detecting lever of the introduction guide 8 and the distal end of the auxiliary guide support shaft, on a portion 4a continuously connected to the frame 4. 5 is opened and closed by the tension detecting lever of the introduction guide 8 displaced in accordance with the tension of 5. Therefore, the displacement state of the introduction guide 8, that is, the tension of the belt 5, can be detected by the open / close state of the limit switch 14.

If it is detected that the belt 5 is not tensioned by detecting the tension of the belt 5, it is determined that the belt 5 is extended to the lower limit position, and the belt 5 is moved to the lower limit. The rotation of the motor 2 can be controlled so as not to be extended beyond the state.

In the belt support structure of the nursing lift, the tension can be detected by operating the limit switch 14 by the displacement operation of the introduction guide 8 itself which is displaced in accordance with the tension of the belt 5. It can be determined whether the belt 5 is under tension. Therefore, based on the determination result, the belt 5
Can be controlled, and troubles such as twisting and entanglement do not occur. In addition, since it is not necessary to provide a separate member such as a tensioner provided in the conventional example, the number of components can be reduced, and the configuration can be simplified and downsized.

Further, by pressing the belt 5 toward the drum 6 by the pressing portion 8c provided integrally with the introduction guide 8, a problem that the belt 5 wound around the drum 6 is loosened and entangled does not occur. . Moreover, since it is not necessary to provide another member such as a drum retainer provided in the conventional example, the number of parts can be reduced.

A pressing portion 8c provided so as to be displaced in the pressing direction in accordance with the tension of the belt 5 is provided with a spring 1
1, the pressing force of the belt 5 by the pressing portion is adjusted according to the tension of the belt 5 to press the belt 5 with a substantially uniform pressing force. The effect that the belt 5 wound around is loosened and no longer entangled can be further exerted.

Further, by connecting the spring 11 to the introduction guide 8, the introduction guide 8 can be displaced along the pressing direction of the pressing portion.
It is not necessary to provide another member for displacing along the pressing direction of c.

Next, a modification of the embodiment of the present invention will be described below with reference to FIGS. This modification is different from the embodiment in that the tension detecting lever 8
The difference is that the guide shaft 9a for supporting the rotatable member b is erected from the rear surface of the frame 4 and that the flanges 7 are formed at both ends in the axial direction of the drum 6. 4 is connected to the traveling runner 15 so as to be movable in the horizontal direction.

The traveling runner 15 has a connecting piece 15a for connecting the frame 4 and wheels 15b rotatably supported by the connecting piece 15a. This running runner 15
On a traveling rail 16 having a substantially H-shaped cross section, for example, by being driven by wheels by a hand pushing operation of an operator,
It is movable along the traveling rail 16.

In the belt support structure of the care lift, the effects of the embodiment can be obtained.
The frame 4 can be moved along with the traveling runner 15 in the horizontal direction.

In the embodiment, similarly to the present modification,
By connecting the frame 4 to a similar traveling runner 15, the frame 4 can be moved in the horizontal direction.

In one embodiment and the modified embodiment, the introduction guide 8 is provided so as to be displaced in accordance with the tension of the belt 5, and the introduction guide 8 is provided with a pressing portion 8 c for pressing the belt 5 toward the drum 6. Although all of the configurations provided integrally are provided, for example, if the above-described problem of the belt 5 can be sufficiently suppressed, a configuration provided with only one of them may be used.

In the embodiment and the modified example, the spring 11 serving as the urging portion is provided with the pressing portion 8c so as to press the belt 5 by pulling the pressing portion 8c of the introduction guide 8 to the spring post 10. Pressing part 8c
A biasing portion may be provided on the opposite side of the belt 5 with the pressing portion 8c pressed toward the belt 5.

In the embodiment and the modification, the limit switch 14 is provided for detecting the tension of the belt 5, but a proximity sensor or a photoelectric switch may be provided.

[0037]

According to the first aspect of the present invention, the belt supporting structure of the nursing care lift can detect the tension by operating the limit switch, for example, by operating the guide switch itself which is displaced in accordance with the belt tension. Therefore, it can be determined whether or not the belt is under tension. Therefore, the feeding or winding of the belt can be controlled on the basis of the determination result, and the trouble such as twisting or tangling does not occur. In addition, since it is not necessary to provide a separate member such as a tensioner provided in the conventional example, the number of parts can be reduced.

According to the belt support structure of the second aspect of the present invention, the belt is pressed toward the drum by the pressing portion provided integrally with the guide portion, so that the belt wound around the drum is loosely entangled. No problems occur. Moreover, since it is not necessary to provide another member such as a drum retainer provided in the conventional example, the number of parts can be reduced.

According to the third aspect of the present invention, in addition to the effect of the second aspect of the present invention, the pressing portion is displaced in the pressing direction according to the tension of the belt. As a result, the belt pressing force can be adjusted by adjusting the pressing force of the belt by the pressing portion according to the tension of the belt, and the belt can be pressed with a substantially uniform pressing force. The effect of not being attached can be further exhibited.

According to the fourth aspect of the present invention, in addition to the effect of the third aspect of the present invention, the guide lift itself can be displaced according to the tension of the belt. By operating the limit switch, the tension can be detected.
It is possible to determine whether or not the belt is under tension without providing another member for detecting the tension of the belt. Therefore, the feeding or winding of the belt can be controlled based on the determination result, and twisting and entanglement do not occur. Further, by connecting the urging portion to the guide portion, the guide portion can be displaced in the pressing direction of the pressing portion, so that another member for displacing the guide portion in the pressing direction of the pressing member is provided. You don't have to.

[Brief description of the drawings]

FIG. 1 is a partial perspective view of one embodiment of the present invention.

FIG. 2 is a partial perspective view showing a positional relationship between a tension detection lever and a limit switch according to the first embodiment.

FIG. 3 is a front sectional view of a modification of the above.

FIG. 4 is a side view of the same.

FIG. 5 is a bottom view of the same.

FIG. 6 is a perspective view of a conventional example.

[Explanation of symbols]

 Reference Signs List 5 belt 6 drum 8 introduction guide (guide part) 8c pressing part 11 spring (biasing part)

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Noriyuki Shikata 1048 Odakadoma, Kadoma City, Osaka Prefecture Matsushita Electric Works Co., Ltd. F-term (reference) 4C040 AA08 HH01 JJ01

Claims (4)

[Claims] 1. A belt support structure for a care lift, comprising: a drum for holding a belt to be fed or wound up; and a guide section for guiding a belt feeding section below the drum. A belt support structure for a care lift, wherein the belt support structure is provided so as to be displaced in accordance with the belt tension. 2. A belt support structure for a care lift, comprising: a drum for holding a belt to be fed or wound up; and a guide portion for guiding a belt feeding portion below the drum. A belt support structure for a care lift, wherein a pressing portion for pressing a belt toward the drum is provided integrally. 3. The belt support structure of a care lift according to claim 2, wherein said pressing portion is provided integrally with said guide portion so as to be displaced along a pressing direction in accordance with a tension of said belt. 4. An urging portion for urging the pressing portion toward the pressing direction is connected to the guide portion so that the guide portion is displaced along the pressing direction in accordance with the tension of the belt. 4. The belt support structure for a care lift according to claim 3, wherein