JP2007308293A - Level difference eliminator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a level difference eliminator capable of achieving a form of preventing a fall of a wheelchair or the like on a table and a form of permitting conveyance of the wheelchair or the like from the top of the table by simple manual operation. <P>SOLUTION: The level difference eliminator comprises the table 2 lifted by a lifting mechanism. The table 2 is provided with a fixed fence 3, and hollow pipes 4, 5 are fixed to the fixed fence 3. A first handrail 6 and a second handrail 7 are rotatably inserted and supported in the hollow pipes 4, 5. The level difference eliminator further comprises a rotation linking means for allowing the first handrail 6 and second handrail 7 to rotate synchronously with each other and allowing the rotation of only the second handrail 7 in a state of restraining the rotation of the first handrail 6. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  TECHNICAL FIELD The present invention relates to a level difference canceller including a table that can be used in a place having a level difference and that can be equipped with a wheelchair or the like.

Conventionally, in this kind of leveling machine, as a safety fence to prevent the wheelchair mounted on the table from falling off, fixed fences are provided on both sides of the table, and a stand-up car stopper is installed at the entrance and exit of the wheelchair. A chain stretched between fixed fences on both sides is known (see Patent Document 1).
Japanese Patent Application Laid-Open No. 07-101687.

  By the way, in the leveling machine, a wheelchair is mounted on the table, and the setting operation of the car stopper to prevent the wheelchair from falling off in the direction of the entrance and exit of the leveling machine, the release operation of the set, the raising and lowering of the leveling machine This is usually done by an attendant. However, in most cases, the space on the table where the level difference canceller is installed is small, and it is difficult for the attendant to be on the table where the wheelchair is mounted, and to go back and forth between the table exit and the entrance. It was. Therefore, an attendant can only move outside the table to set or release the car stop at one doorway of the table and to set or release the other car stop on the opposite side. There was no need for complicated manual operation.

  In order to eliminate such a complicated manual operation by the attendant, it is conceivable that the car stopper is electrically driven. However, if such an electric drive is used, the structure becomes complicated and the size of the machine increases. Also, it becomes expensive.

  The present invention has been made from the above-described actual state of the prior art, and the object thereof is a simple manual operation of a form for preventing a wheelchair or the like from falling on a table and a form for allowing a wheelchair or the like to be transported from the table. It is in providing the level | step difference resolver which can be implement | achieved by.

  In order to achieve this object, according to the present invention, there is provided a step eliminating machine including a table that is moved up and down by an elevating mechanism, wherein the table is provided with a fixed fence, and the fixed fence includes one or a plurality of medium. An empty tube is fixed, and the first handrail and the second handrail are rotatably inserted and supported in the hollow tube, and the first handrail and the second handrail rotate in synchronization with each other. And a rotation cooperation means for allowing the rotation of only the second handrail in a state where the rotation of the first handrail is restricted.

  In the present invention configured as above, after placing the wheelchair on the table in a state where the table is positioned at the descending end, for example, an attendant on the table rolls the second handrail over the wheelchair or the like. By rotating to the fall prevention position to prevent, the first handrail can be rotated to the fall prevention position in synchronization with the second handrail via the rotation cooperation means. In addition, when the table is located at the rising end and the wheelchair on the table is to be transported to, for example, the uppermost floor of the staircase, the first handrail is restrained via the rotation cooperation means. Only the second handrail can be rotated, and a wheelchair or the like can be carried out from the exit space formed by the rotation of the second handrail. In this way, by a simple manual operation using only the second handrail of an attendant or the like, it is possible to easily realize a fall prevention form for preventing the fall of a wheelchair or the like and a form enabling a wheelchair or the like to be conveyed.

  The present invention includes a hollow tube fixed to a fixed fence, a first handrail and a second handrail rotatably supported by the hollow tube, and a first handrail and a second handrail. And a rotation cooperation means for allowing rotation of only the second handrail in a state where the rotation of the first handrail is constrained to be rotated. A form for preventing fall and a form for allowing a wheelchair or the like to be transported from the table can be realized by a simple manual operation. Therefore, it is possible to reduce the fatigue associated with the operation of the attendant and the like as compared with the conventional case, and it is possible to make the structure simpler than the electric drive, and to reduce the production cost.

  Hereinafter, the best mode for carrying out the level difference canceling machine according to the present invention will be described with reference to the drawings.

  FIG. 1 is a front view showing an embodiment of a step eliminating machine of the present invention, FIG. 2 is an enlarged sectional view taken along line AA in FIG. 1, and FIG. 3 is an enlarged sectional view taken along line BB in FIG. is there. 4 is an enlarged sectional view taken along line DD in FIG. 3, FIG. 5 is an enlarged sectional view taken along line EE in FIG. 3, and FIG. 6 is a sectional view taken along line HH in FIG. 7 is a cross-sectional view taken along line FF in FIG. 5, FIG. 8 is a cross-sectional view taken along line CC in FIG. 7, FIG. 9 is a cross-sectional view taken along line GG in FIG. It is sectional drawing which follows JJ curve.

  As shown in FIG. 1, the level difference canceling machine 1 according to the present embodiment is provided with a table 2 that is moved up and down by a lifting mechanism (not shown) on the upper side, and fixed fences 3 are fixed on both sides of the upper surface of the table 2. Has been. FIG. 1 shows a state in which the table 2 of the level difference canceller is raised. In the lowered state, the table 2 is lowered to a position close to the ground and folded.

  As shown in FIGS. 1 to 3, the hollow tube 4 and the hollow tube 5 are fixed to the fixed fence 3 by screwing or welding. In this embodiment, as shown in FIGS. 1 and 2, two hollow tubes, a hollow tube 4 and a hollow tube 5, are attached. Depending on the size of the table 2, one hollow tube is provided. Or you may attach 3 or more.

  As shown in FIG. 4, a pipe-shaped first handrail 6 is rotatably inserted into the hollow tube 4. As shown in FIGS. 5 and 6, the end portion of the first handrail 6 is positioned inside the hollow tube 5, and the pipe-shaped second handpiece 6 is inserted into the hole 6 b at the end portion of the first handrail 6. The end of the two handrails 7 is inserted. A spring seat 9 is provided on the inner surface of the hole 6 b of the first handrail 6, and a compression spring is provided in a portion of the hole 6 that forms a gap between the spring seat 9 and the end of the second handrail 7. 8 is incorporated.

  As shown in FIGS. 7 to 10, the first protrusion 10 provided on the first handrail 6 is fitted into a substantially L-shaped first groove 5 a provided on the inner surface of the hollow tube 5. The protrusion 10 is guided by the first groove 5a, and the first handrail 6 in a state where the second handrail 7 is connected is rotatable and slidable in the axial direction.

  The second protrusion 11 provided on the second handrail 7 is fitted into an L-shaped second groove 6a provided on the first handrail 6, and the second protrusion 11 is guided by the second groove 6a. In a state where the first handrail 6 is restrained, the second handrail 7 can slide in the direction of compressing the spring 8 without moving the first handrail 6 in the axial direction and without rotating it. And can be rotated.

  The first protrusion 10 formed in the vicinity of the end portion of the first handrail 6 described above, the first groove 5 a formed on the inner surface of the hollow tube 5 for guiding the first protrusion 10, and the first handrail 6 2nd groove | channel 6a formed in the edge part, 2nd protrusion 11 formed in the edge part vicinity of the 2nd handrail 7, and engaging with the 2nd groove | channel 6a, 2nd groove | channel 6a vicinity of the 1st handrail 6 The first handrail 6 and the second handrail 7 are synchronized with each other by the spring seat 9 provided on the spring seat 9 and the spring 8 mounted between the spring seat 9 and the end surface of the second handrail 7. A rotation cooperation unit is configured to permit rotation and allow rotation of only the second handrail 7 in a state where the rotation of the first handrail 6 is restricted.

  11 is a front view showing a state in which the first handrail and the second handrail are rotated in the present embodiment, FIG. 12 is an enlarged cross-sectional view taken along the line KK of FIG. 11, and FIG. 14 is an enlarged cross-sectional view taken along the line -V, FIG. 14 is a cross-sectional view taken along the line LL in FIG. 13, FIG. 15 is a cross-sectional view taken along the line MM in FIG. FIG. 17 is a sectional view taken along line NN in FIG.

  In this embodiment configured as described above, for example, after a wheelchair (not shown) is mounted on the table 2, the attendant moves the second handrail 7 toward the center of the table 2 in order to prevent the wheelchair from falling off. The first handrail 6 is rotated in synchronization with the second protrusion 11 of the second handrail 7, and the first protrusion 10 of the first handrail 6 is provided with the first protrusion 10 provided on the hollow tube 5. It is guided by one groove 5a, and slides in the axial direction simultaneously with rotation. That is, the first protrusion 10 moves from the starting point of the first groove 5a shown in FIG. 8 to the terminal part of the first groove 5a shown in FIG. When the first protrusion 10 is engaged with the end portion of the first groove 5 a, the first handrail 6 is held in a state in which the rotation is restrained by the hollow tube 5. Accordingly, the second handrail 7 is also held integrally with the first handrail 6. Thereby, the form which prevents fall of the wheelchair on the table 2 is formed.

  18 is an enlarged cross-sectional view taken along line U-U of FIG. 23, FIG. 19 is a cross-sectional view taken along line RR of FIG. 18, FIG. 20 is a cross-sectional view taken along line SS of FIG. FIG. 22 is a front view showing a state where only the second handrail is rotated and returned to the original position in this embodiment, and FIG. 23 is a WW curve of FIG. It is sectional drawing which follows.

  When the table 2 is lifted from the above-described state and then a wheelchair (not shown) on the table 2 is transported to, for example, the uppermost floor surface of the stairs, the attendant must first move as shown in FIGS. In a state where the rotation of the first handrail 6 is restrained by the engagement between the protrusion 10 and the end portion of the first groove 5a, the second handrail 7 is moved in the direction in which the spring 8 is compressed, and this second hand is moved. What is necessary is just to rotate the sliding 7 in the direction which returns. Accordingly, the second handrail 7 is held in the original state through the engagement between the second protrusion 11 and the second groove 6a. Therefore, the wheelchair can be carried out from the exit space formed on the second handrail 7 side, that is, from the attendant side.

  In order to return from the state shown in FIG. 22 to the state shown in FIG. 1, a manual operation opposite to the above-described manual operation may be performed. That is, in the state shown in FIG. 22, when the second handrail 7 is rotated in the center direction of the table 2, the second handrail 7 is moved back by the force of the spring 8 to be in the state shown in FIG. 11. . From this state, when a little force is applied to push down the second handrail 7, the first protrusion 10 and the first groove 5a are disengaged, and the first handrail 6 and the second handrail 7 are synchronized. To return to the state shown in FIG.

  According to the present embodiment configured as described above, the form for preventing the wheelchair from falling on the table 2 and the form for allowing the wheelchair to be transported from the table 2 are simple only on the second handrail 7 side. It can be realized by simple manual operation. Therefore, fatigue associated with the operation of the attendant can be reduced as compared with the conventional case, and the structure can be simplified as compared with the electric drive, and the production cost can be reduced.

It is a front view which shows one Embodiment of the level | step difference resolver of this invention. It is an expanded sectional view which follows the AA line of FIG. It is an expanded sectional view which follows the BB line of FIG. It is an expanded sectional view which follows the DD line | wire of FIG. It is an expanded sectional view which follows the EE line of FIG. It is sectional drawing which follows the HH line of FIG. It is sectional drawing which follows the FF line | wire of FIG. It is sectional drawing which follows the CC curve of FIG. It is sectional drawing which follows the GG line of FIG. It is sectional drawing which follows the JJ curve of FIG. In this embodiment, it is a front view which shows the state which rotated the 1st handrail and the 2nd handrail. It is an expanded sectional view which follows the KK line | wire of FIG. It is an expanded sectional view which follows the VV line of FIG. It is sectional drawing which follows the LL line | wire of FIG. It is sectional drawing which follows the MM line | wire of FIG. It is sectional drawing which follows the PP curve of FIG. FIG. 15 is a cross-sectional view along the line NN in FIG. 14. FIG. 24 is an enlarged cross-sectional view taken along the line U-U in FIG. 23. It is sectional drawing which follows the RR line | wire of FIG. It is sectional drawing which follows the SS line | wire of FIG. It is sectional drawing which follows the TT curve of FIG. In this embodiment, it is a front view which shows the state which rotated only the 2nd handrail and returned to the original position. It is sectional drawing which follows the WW curve of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Level difference machine 2 Table 3 Safety fence 4 Hollow tube 5 Hollow tube 5a 1st groove 6 1st handrail 6a 2nd groove 7 2nd handrail 8 Spring 9 Spring seat 10 1st protrusion 11 2nd protrusion

Claims (2)

In the level difference canceller equipped with a table that moves up and down by the lifting mechanism,
The table is provided with a fixed fence, and one or a plurality of hollow tubes are fixed to the fixed fence, and the first handrail and the second handrail are rotatably inserted into the hollow tube. Supported,
Rotation linkage that allows the first handrail and the second handrail to rotate in synchronization with each other and allows the rotation of only the second handrail in a state where the rotation of the first handrail is restricted. A level difference eliminating machine characterized by comprising means. In the invention of claim 1,
The rotation cooperation means includes a first protrusion formed near an end of the first handrail, a first groove formed on an inner surface of the hollow tube and guiding the first protrusion, and the first hand. A second groove formed at an end of the handrail, a second protrusion formed near the end of the second handrail and engaging the second groove, and the vicinity of the second groove of the first handrail And a spring mounted between the spring seat and the end surface of the second handrail.

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