JP6859908B2 - handrail - Google Patents

Description

The present invention relates to a handrail.

Patent Document 1 describes a parallel bars type walking training machine in which a pair of handrail bars supported by a plurality of columns are arranged substantially in parallel. The handrail bar is supported by a bent-shaped connecting bar with respect to the support column. The connecting rod is configured to be rotatable with respect to the support column and the handrail rod, and the distance between the pair of handrail rods can be adjusted by the rotation. Further, the connecting rod has a plurality of holes provided at predetermined intervals in the height direction, and the height with respect to the support can be adjusted by using a fixture such as a bolt.

JP-A-2002-345995

However, in the parallel bars type walking training machine described in Patent Document 1, it is necessary to adjust the height of the handrail bars and the distance between the handrail bars while fixing them in order, which takes time.
Therefore, the inventor decided to adjust (align) the horizontal distance of the handrail bar from the support column and the height of the handrail bar at once without fixing them together, and then fix the handrail bar. By adjusting the horizontal distance from the support of the handrail bar, the horizontal distance from the user and the distance between the pair of handrail bars can be adjusted.

However, for example, while adjusting the distance between the handrail bars, the position in the height direction shifts due to the weight of the handrail bars, which also takes time for adjustment and increases the difficulty of adjustment.
As described above, there is a demand for a handrail that can easily adjust the height of the handrail bar and the interval (adjustment of the horizontal distance) while shortening the working time.

Therefore, an object of the present invention is to provide a handrail that can easily adjust the height of the handrail bar and the horizontal distance from the support of the handrail bar while shortening the working time.

One aspect of the present invention for achieving the above object is
With multiple stanchions
A plurality of link members arranged so as to be movable in the height direction of the support column and rotatably with respect to the support column axis with respect to each of the plurality of support columns.
A handrail bar supported by the plurality of link members and
It is a handrail equipped with
Fixtures configured so that the relative positions of the link members with respect to the columns can be fixed and released.
A unloading mechanism that reduces the total weight of the link member and the handrail bar,
With more
In a state where the relative position is released by the fixture, the load-removing mechanism reduces the total weight to maintain the height of the link member with respect to the support column, and the handrail bar It becomes a state in which the link member can move substantially in parallel in conjunction with the rotation of the link member with respect to the support column shaft.
It is a handrail.

According to this aspect, when adjusting the height of the handrail bar and the horizontal distance from the support of the handrail bar, (1) fixing or releasing the relative position of the link member with respect to the support of the fixture is performed. To do it all at once by operation, (2) to determine the height and the distance independently when releasing the fixing, and (3) to reduce the total weight of the link member and the handrail bar when releasing the fixing. For example, it is possible to suppress the deviation of the height that may occur due to the weight of the handrail bar or the like while adjusting the distance by releasing the fixing (thus, finely adjusting the height and the distance). Therefore, according to this embodiment, the adjustment of the height and the distance can be easily realized by shortening the working time.

According to the present invention, it is possible to provide a handrail that can easily adjust the height of the handrail bar and the horizontal distance from the support of the handrail bar while shortening the working time.

It is a perspective view which shows the schematic structure of the handrail unit provided with a pair of handrails which concerns on one Embodiment of this invention. It is an enlarged view of a part of the handrail shown in FIG. It is an enlarged view of the lock lever part shown in FIG. It is sectional drawing which shows the cross section seen from the IV-IV direction of FIG. It is a partial cross-sectional view which shows an example of the internal structure of the support column and a link member in the handrail shown in FIG. It is a perspective view which shows an example of the scale for height adjustment in the handrail unit shown in FIG. It is a perspective view which shows an example of the scale for width adjustment in the handrail unit shown in FIG. It is a figure which shows an example of the arrangement position of the scale in FIG. 6 and FIG. It is a side view of the handrail shown in FIG. It is a perspective view which shows the example of the mechanism which replaces the lock lever in the handrail shown in FIG.

Hereinafter, the handrail according to the embodiment of the present invention will be described with reference to the drawings, taking as an example a handrail unit provided with a pair of the handrails. This handrail unit can be used, for example, for walking training.

FIG. 1 is a perspective view showing a schematic configuration of a handrail unit provided with a pair of handrails according to an embodiment of the present invention, and FIG. 2 is an enlarged view of a part of the handrail shown in FIG. is there.
The handrail unit 1 shown in FIG. 1 includes a pair of handrails 10 and 20. The handrail 10 includes a handrail rod 11 and two support portions 12 for supporting the handrail rod 11. Similarly, the handrail 20 includes a handrail bar 21 and two support portions 22 for supporting the handrail bar 21. It is sufficient that at least two support portions 12 are provided, and the support portions 12 are arranged apart from each other in the walking direction (L direction in FIG. 1) of the user (trainee, pedestrian). This can be done, and the same applies to the support portion 22.

Hereinafter, the configuration of the handrail 10 will be mainly described, but the configuration of the handrail 20 is also the same. The handrails 10 and 20 may be installed so that, for example, the straight line connecting the two support portions 12 and the straight line connecting the two support portions 22 are substantially parallel to each other. This allows the user to walk between the handrail bars 11 and 21 while holding them.

The handrail bar 11 is a bar-shaped member having a thickness that can be grasped by the user, and at least the central portion in the longitudinal direction is a straight bar.
The support portion 12 has a support column 13, a link member 14, a lock lever portion 15, and a load unloading mechanism (described later with reference to FIG. 5). The support column 13 is, for example, a member having a cylindrical shape or a square tube shape, and may be fixed to the floor of a corridor, a room, or the like. Further, the support column 13 may be fixed so that its longitudinal direction is substantially the vertical direction (H direction in FIG. 1). The handrail unit 1 can be used as a handrail of a treadmill (conceptually including a walking training device), and in that case, the support column 13 may be fixed to the floor or the treadmill main body.

The link member 14 has a columnar member 16 on the support column 13 side, an arm 17, a columnar member 18 on the handrail bar 11 side, and a gripping member 19, so that a refracting portion is formed in order to form a part of a parallel link mechanism described later. It is a member that has been made to hold. Even if the link member 14 has a bent portion, the same description as below can be basically used.

The columnar member 16 is a columnar (rod-shaped) member inserted into the cylinder of the column 13. The columnar member 16 is arranged so as to be movable in the height direction of the support column 13 as shown by a straight arrow in FIG. Further, the columnar member 16 is rotatably arranged with respect to the column shaft together with the arm 17 as shown by the arcuate arrow in FIG. Here, the strut axis refers to an axis that passes through the center of the cross section of the strut 13 and is along the longitudinal direction of the strut 13 (the H direction in FIG. 1).

The gripping member 19 is, for example, a tubular member that grips the handrail bar 11. The link member 14 will support the handrail bar 11 in the gripping member 19. The columnar member 18 is a columnar member connected to the lower side of the gripping member 19. The columnar members 16 and 18 can be, for example, cylindrical or prismatic members. The arm 17 is a plate-shaped member fixed to the upper end side of the columnar member 16 and connected to the lower end side of the columnar member 18. The arm 17 is not limited to a plate-shaped member, but may be a member having a cylindrical shape, for example.

In this way, the columnar member 16 is inserted into the columnar member 16 so as to be rotatable and movable in the height direction with respect to the column 13, and the arm 17, the columnar member 18, and the gripping member 19 are sequentially inserted into the columnar member 16. It is connected. With such a configuration, the link member 14 is movably arranged in the height direction of the support column 13 and rotatably arranged with respect to the support column shaft. That is, the relative position of the link member 14 with respect to the support column 13 can be determined by the movement of the link member 14 in the height direction with respect to the support column 13 and the rotation of the link member 14. Since the link member 14 is arranged so as to be movable in the height direction with respect to the support column 13, it can be said that the support portion 12 includes a height adjusting mechanism.

Further, the link member 14 and the handrail bar 11 have a parallel link mechanism. That is, the link member 14 supports the handrail rod 11 so that the handrail rod 11 moves in parallel (substantially parallel) in conjunction with the rotation with respect to the column shaft. For example, such support is possible by rotatably connecting the connecting portion between the columnar member 18 and the arm 17 or the connecting portion between the gripping member 19 and the columnar member 18.

As a result, the user or his / her assistant (hereinafter referred to as the user or the like) changes the horizontal distance between the handrail bar 11 and the support column 13 by rotating the link member 14, that is, the handrail bar 11 , 21 can be changed. In other words, the support portion 12 includes a distance adjusting mechanism. Hereinafter, the distance adjusting mechanism in the handrail unit 1 is referred to as a width adjusting mechanism because it is a mechanism for adjusting the width between the handrail rods 11 and 21.

The lock lever portion 15 is an example of a fixture configured so that the relative position of the link member 14 with respect to the support column 13 (that is, the relative positional relationship between the support column 13 and the link member 14) can be fixed and released. .. FIG. 3 shows an enlarged view of the lock lever portion 15, and FIG. 4 shows a cross-sectional view of FIG. 3 as viewed from the IV-IV direction. As illustrated in FIGS. 3 and 4, the lock lever portion 15 includes a lock lever 31, a hinge pin 32, a contact plate 33, a metal collar 34, metal washers 35, 37, and a disc spring (three sets of three parallel pieces in series). It has 36, a shaft 38, a hard lock nut 39, a belleville nut 40, and a lock sleeve 41.

As illustrated in FIG. 3, the lock sleeve 41 is a cylindrical sleeve, which is fixed to a support column 13 at a lower portion thereof, and has a hinge portion 42 and an opening / closing portion 43 at the upper portion thereof. The main body of the lock sleeve 41 and the opening / closing portion 43 have a shape capable of sandwiching the columnar member 16. The opening / closing portion 43 is configured to be openable / closable with respect to the main body of the lock sleeve 41 by the hinge portion 42. Further, both the upper portion of the lock sleeve 41 and the opening / closing portion 43 have through holes for inserting the shaft 38.

The lock lever 31 is attached at one end of the shaft 38 so as to be rotatable around the hinge pin 32. The other end of the shaft 38 has threads for screwing into the hard lock nut 39 and the bag nut 40. Then, the shaft 38 is inserted into the through hole of the opening / closing portion 43 with the contact plate 33, the metal collar 34, the metal washer 35, the disc spring 36, and the metal washer 37 in order from the lock lever 31 side, and the lock sleeve 41 is inserted. It is inserted into the through hole of the main body. The hard lock nut 39 and the bag nut 40 are screwed into the threads of the shaft 38 in this order.

The lock lever 31 has a base portion around the insertion hole of the hinge pin 32 and a handle (lever portion) extended from the base portion. This base has a shape that increases the force for holding the columnar member 16 (mainly the force due to the disc spring 36) by rotating the handle from the state parallel to the shaft 38 toward the lower side (floor side). Has. As this shape, a cam shape in which the thickness around the insertion hole of the hinge pin 32 is changed can be adopted.

With such a shape, the user or the like can release (unlock) the fixing of the columnar member 16 by rotating the handle facing downward to the side parallel to the shaft 38, and from this state. The columnar member 16 can be fixed (locked) by rotating the handle downward. The user or the like can adjust the height and width by performing the unlocking operation once. After that, the user or the like can independently perform the height adjustment by the height adjusting mechanism and the width adjustment by the width adjusting mechanism, and can fix the height and the width in that state by one lock operation.

It is preferable that the operating force for locking and unlocking is such that it can be easily operated even by a weak person, for example, 70 (± 10) N or less. Further, it is preferable that the lock lever portion 15 has a detent mechanism that limits the rotation of the handle within the vertical plane so that the handle of the lock lever 31 always faces downward when locked. Further, the force of holding the columnar member 16 at the time of locking prevents the columnar member 16 from being displaced (on the handrail bar 11) even when a person puts his / her weight on the handrail bar 11.

Next, the unloading mechanism included in the support portion 12 will be described. This unloading mechanism is a self-weight compensating mechanism that compensates for the weight by reducing the total weight of the link member 14 and the handrail bar 11 in a state where the lock lever portion 15 has released the lock.

The unloading mechanism is configured by using a gas spring 51 so that the inside of the columnar member 16 is shown in the cross-sectional view of FIG. 4 and an example of the internal structure of the link member 14 and the support column 13 is shown in the partial cross-sectional view of FIG. be able to. The gas spring 51 can be a general gas spring. One end of the gas spring 51 is fixed to the column 13 side, and the other end is fixed to the column member 16 side. The gas spring 51 sets the total weight of the handrail rod 11 and the link member 14 between the reaction force when the entire length is extended and the reaction force when the gas spring 51 contracts, and compensates for its own weight. In this way, the gas spring 51 generates a force that balances the weights of the handrail rod 11 and the link member 14, and makes it possible to make the handrail rod 11 stationary at any height.

Therefore, in a state where the lock lever portion 15 is released from fixing the relative position, the total weight is reduced by the gas spring 51 to maintain the height of the link member 14 with respect to the support column 13, and the handrail bar. 11 is in a state where it can move substantially in parallel in conjunction with the rotation of the link member 14 with respect to the support column shaft.

Note that FIG. 5 shows an example in which the support column 13 is installed on the installation base 52 of the treadmill main body, but in this case, one end thereof can be fixed to the installation base 52 side. Further, the unloading mechanism can be configured by using a mechanism other than the gas spring. Further, the unloading mechanism may be a mechanism that reduces the weight of either the link member 14 or the handrail bar 11, as long as the total weight can be reduced.

Next, a more preferable example of the handrail unit 1 will be described.
As illustrated in FIG. 6, it is preferable that the columnar member 16 is provided with a scale 61 for height adjustment in order to have reproducibility of expansion and contraction in the height direction. The scale 61 may have a value indicating the height of the support column 13 from the installation surface. Further, in order to have reproducibility of expansion and contraction in the width direction (degree of rotation of the arm 17), it is preferable to provide a scale 62 for width adjustment on the upper surface of the lock sleeve 41 as illustrated in FIG. In the example of FIG. 7, a scale 61a in which a straight line extending in the vertical direction is drawn on the scale 61 for height adjustment is adopted, and the scale 62 for width adjustment is used, and the position of the straight line on the scale 61a determines the rotation angle. The scale is as shown.

Further, as shown in FIG. 8, the scales 61a and 62 are arranged at positions where the user or the like can adjust each support column 13 when viewed from the direction indicated by the arrow (from the other handrail side). Is preferable. By arranging the scales 61a and 62 at such positions, the user or the like can be located between the handrails 10 and 20 and unlock the scales to adjust the height and width. To adjust the width between the handrail bars 11 and 21, hold the handrail bar 11 or the arm 17 of the link member 14 and rotate it on a horizontal plane, and move the handrail bar 11 to the position indicated by the handrail bar 11a (arm 17). This can be achieved by moving it to the position indicated by the arm 17a. The user or the like can also adjust the width by moving the handrail bar 21 to the position indicated by the handrail bar 21a in combination with or instead of such movement. Note that FIG. 8 shows an example in which the support column 13 is installed on the installation table 52 of the treadmill main body, and the scale 61a may be given a value indicating the number of columns 13 from the installation table 52.

Further, in FIG. 9, as shown in the side view of the handrail 10, the lock lever 31 is arranged inward to the left and right (toward the side where the other support of the handrail 10 is located). Is preferable. As a result, the user or the like is located between the pair of lock levers 31 on the handrail 10 and can easily operate by himself / herself.
Further, as illustrated in FIG. 10, instead of the lock lever portion 15 having the lock lever 31 in FIG. 3, another fixture 15a having a screw-in type fixing knob 71 may be adopted.

Although the handrail unit 1 has been described above, the components included in the handrail unit 1 are not limited to those shown in the drawings, and may have the functions described for each component.

Although the present embodiment has been described above, the above-described embodiment has the following features.
That is, the handrail 10 is a plurality of support columns 13 and a plurality of link members rotatably arranged with respect to each of the support columns 13 in the height direction of the support columns 13 and rotatably with respect to the support column shaft. 14 and a handrail bar 11 supported by these link members. The handrail 10 has a fixture (exemplified by the lock lever portion 15) configured so that the relative position of the link member 14 with respect to the support column 13 can be fixed and released, and the total weight of the link member 14 and the handrail rod 11. In a state where the relative position is not fixed by the fixture, the total weight is reduced by the load-relief mechanism to reduce the total weight of the link member 14 with respect to the support column 13. While maintaining the height, the handrail rod 11 is in a state where it can move substantially in parallel in conjunction with the rotation of the link member 14 with respect to the support column shaft.

According to the above configuration, when adjusting the height of the handrail bar and the horizontal distance from the support of the handrail bar, (1) fixing or releasing the relative position of the link member with respect to the support of the fixture is performed. To do it all at once by operation, (2) to determine the height and the distance independently when releasing the fixing, and (3) to reduce the total weight of the link member and the handrail bar when releasing the fixing. For example, it is possible to suppress the deviation of the height that may occur due to the weight of the handrail bar or the like while adjusting the distance by releasing the fixing (thus, finely adjusting the height and the distance). Therefore, according to the above configuration, the adjustment of the height and the distance can be easily realized by shortening the working time. For example, when this handrail is used for walking training, even if the physique of the user varies, the positions of the handrail bar and the user can be optimally adjusted by one assistant, and the walking training can be performed. It is possible to achieve both ease of use and shortening of preparation time.

1 Handrail unit 10,20 Handrail 11,11a, 21,21a Handrail rod 12,22 Support part 13 Strut 14 Link member 15 Lock lever part 15a Fixture 16 Column-shaped member 17, 17a Arm 18 Column-shaped member 19 Gripping member 31 Lock lever 32 Hinge pin 33 Contact plate 34 Metal collar 36 Belleville spring 35, 37 Metal washer 38 Shaft 39 Hard lock nut 40 Bag nut 41 Lock sleeve 42 Hinge part 43 Opening and closing part 51 Gas spring 52 Installation base 61, 61a For height adjustment Scale 62 Scale for width adjustment 71 Fixing knob

Claims (1)

With multiple stanchions
A plurality of link members arranged so as to be movable in the height direction of the support column and rotatably with respect to the support column axis with respect to each of the plurality of support columns.
A handrail bar supported by the plurality of link members and
It is a handrail equipped with
A fixture provided for each of the plurality of columns, which is configured to be able to fix and release the relative positions of the link member in the axial direction and the circumferential direction with respect to the column.
A unloading mechanism that reduces the total weight of the link member and the handrail bar,
With more
In a state where the relative position is released by the fixture, the load-removing mechanism reduces the total weight to maintain the height of the link member with respect to the support column, and the handrail bar It becomes a state in which the link member can move substantially in parallel in conjunction with the rotation of the link member with respect to the support column shaft.
handrail.

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