JPH0332667B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a stopper structure for a movable handrail,
In particular, the present invention relates to a stopper structure for a movable handrail that increases safety by reducing looseness at the tip of the main body of the handrail.

[Conventional technology]

Conventionally, so-called movable handrails in which the main body of the handrail is rotated from a use position to a non-use position have been constructed using a base end portion of a handrail main body 1 that is cantilevered and horizontally rotatable, as shown in FIG. It has been proposed that a stopper 2 is formed to restrict the horizontal rotation of the handrail main body 1, and that the stopper 2 is released by lifting the handrail main body 1, thereby making the handrail main body 1 rotatable.

[Problem that the invention seeks to solve]

However, the stopper 2 in such a movable handrail is configured to restrict horizontal rotation of the handrail main body 1 by engaging a pin 2a formed in the handrail main body 1 with a round hole 2b of the bracket 3. The backlash caused by the clearance required for engagement and disengagement between the pin 2a and the round hole 2b caused considerable lateral wobbling at the free end of the handrail main body 1.
This lateral vibration not only deteriorates the image of the product as a whole, but especially when used in a toilet for the handicapped, it can cause a feeling of anxiety when the handicapped person tries to support their entire body weight with the handrail main body 1. This had the problem of being induced.

The present invention was made in order to solve the above-mentioned problem that the stopper of a conventional movable handrail causes considerable lateral vibration at the free end of the main body of the handrail.

[Means for solving problems]

According to the present invention, the above-mentioned problem can be solved by having a stopper structure at the base end of the handrail main body, which is formed to be cantilevered and capable of at least horizontal rotation, for restricting the horizontal rotation of the handrail main body. In a movable handrail that can be horizontally rotated by releasing a stopper by lifting the handrail main body, the handrail main body is provided with an engagement protrusion that is approximately trapezoidal in plan view, and the bracket that supports the handrail main body is provided with the above-mentioned engagement protrusion. The problem is solved by providing a stopper structure for a movable handrail characterized by forming a notch having an angle of expansion that is substantially the same as the angle formed by the hypotenuse of the trapezoidal shape of the engagement protrusion.

[Effect]

The engagement protrusion in the above-mentioned stopper structure is in close contact with the side edge of the notch in the use position of the handrail main body and engages in a wedge shape, thereby preventing play from occurring at this engagement site, and preventing the occurrence of play at the end of the handrail main body. This prevents vibration.

〔Example〕

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows a movable handrail 4 to which a stopper structure according to the present invention is applied. This movable handrail 4 includes a handrail main body 1 formed by connecting the base ends of support rods 5 bent in a substantially inverted U-shape in side view by a vertical member 6, and supports this handrail main body 1. A bracket 3 is attached to the side of the toilet bowl 7. At this time, as shown in FIG.
The tip of the support rod 5 can be rotated vertically around the horizontal axis 9 and horizontally around the vertical axis 10 with respect to the bracket 3 by being pivotally supported on a rotation support 8 which is horizontally rotatably supported on the bracket 3. By lifting the part upward, the handrail main body 1 can be vertically rotated about a horizontal axis 9.

In addition, FIG. 5 shows the support rod 5 that constitutes the handrail main body 1.
2 is a cross-sectional view showing the details of the connecting portion between the steel pipe 12 and the vertical member 6. A gripper 13a is fitted into the support rod 5 formed by covering the outer surface of the steel pipe 12 with a covering material 11, and the gripper 13a is inserted into the support rod 5. By drawing the gripper 13a toward the vertical member 6 side with the bolt 13b, the cone portion 13c of the joint member 13 expands the gripper 13a outward, increasing the friction between the inner wall surface of the steel pipe 12 and the outer circumference of the gripper 13a. Support rod 5 and vertical member 6
This shows the case of concatenating.

To explain the stopper structure of the present invention with reference to FIGS. 3 and 4, a locking protrusion 15 having a substantially trapezoidal shape when viewed from the bottom faces downward at the side end of a locking member 14 attached to the lower end of the vertical member 6 of the handrail main body 1. On the other hand,
The lower end of the bracket 3 is bent toward the handrail main body 1 side to form a locking plate portion 16. This locking plate part 1
6 is a vertical shaft 10 attached to the upper part of the bracket 3;
A semicircular portion 18 whose center 17 is an extension of the axis of
A stopper pin 19 is erected at the center of the semicircular portion 18, and a plurality of notches 20 are formed on the outer periphery of the semicircular portion 18 toward the center 17. The notch 20 widens outward at approximately the same angle α (see FIG. 4) formed by the oblique side of the trapezoidal shape of the locking protrusion 15, and the locking protrusion 15 widens outward at the angle α (see FIG. 4) formed by the oblique side of the trapezoidal shape of the locking protrusion 15. The edges are brought together to allow for interlocking.

On the other hand, a guide part 21 is formed on the opposite side of the locking protrusion 15 of the locking member 14, and a stopper pin 19 is slidably fitted into this guide part 21, and a stopper pin 19 is screwed onto the vertical member 6. The adjustment screw 22 prevents the locking protrusion 15 from digging into the notch 20 excessively.

By providing this stopper pin 19, the horizontal rotation of the handrail main body 1 is achieved not only by the engagement between the locking protrusion 15 and the notch 20, but also by the engagement between the stopper pin 19 and the guide portion 2.
The reaction force is also taken and regulated at the contact portion with 1, so that the force for preventing rotation is increased and the overall structural stability can be improved.

In this way, in the use position of the handrail main body 1, the locking protrusion 15 engages in the notch 20 in a wedge shape, thereby restricting horizontal rotation. Therefore, when the tip of the support rod 5 is lifted from this state, the vertical member 6
rotates around the horizontal axis 9, and the locking protrusion 15 and notch 2
0 (see FIG. 3). Then,
When the support rod 5 is pushed outward in the disengaged state, the locking member 14 horizontally rotates around the vertical shaft 10, and the vertical member 6 forms a conical shape whose rotation center is the axis of the vertical shaft 10 and the stopper pin 19. When the vertical member 6 is rotated by forming a surface and then unloaded at the unused position, the vertical member 6
is automatically rotated around the horizontal axis 9 due to its own weight and the weight of the support rod 5, and the locking protrusion 15 is again attached to the notch 2.
0 (see Fig. 4).

The stopper structure of a movable handrail according to the present invention has been described above based on an embodiment, but the present invention is not limited to what is described in this embodiment. In this case, the conventional example shown in FIG. 2 may be sufficient. Furthermore, the structure of the connecting portion between the handrail main body 1 and the bracket 3 is not limited to this embodiment, and may use a spherical bush 23, as shown in FIG. 6, for example. Furthermore, the notch 20
In the embodiment, a case where a plurality of cutouts 20 are formed so that the use positions can be set in multiple stages is shown, but a total of two cutouts 20 are formed by specifying one use position and one non-use position. Alternatively, in order to define only one use position, only one may be formed. Furthermore, the guide portion 21 is of course unnecessary if the structure of the movable handrail itself does not require vertical rotation of the handrail main body 1, or if it does not require strict vertical rotation. Yes, stopper adjustment screw 22 and stopper pin 1
The structure for preventing overrun of the locking protrusion 15 due to contact with the notch 9 does not have to be provided when the possibility that the locking protrusion 15 is wedged into the notch 20 and cannot be removed is eliminated by suitable selection of the material or the expansion angle α. It's good.

〔Effect of the invention〕

As is clear from the above description, according to the movable handrail stopper structure of the present invention, the engagement protrusion formed at the base end of the handrail main body has a substantially trapezoidal shape in plan view, and the engagement protrusion has a substantially trapezoidal shape in plan view. By forming a notch in the bracket that has an expansion angle that is approximately the same as the angle formed by the hypotenuse of the trapezoid, when the engaging protrusion and the notch engage, the side edge of the engaging protrusion aligns with the side edge of the notch. Since it is tightly engaged with the support rod in a wedge-like manner, no backlash occurs at all, and it is possible to completely prevent the support rod tip from swinging laterally due to this play.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a movable handrail to which the stopper structure according to the present invention is applied, Fig. 2 is a perspective view showing a conventional example, and Fig. 3 is a cross-section of the main part of the movable handrail shown in Fig. 1. Figure 4 is a cross-sectional view taken along the line -- in Figure 3, Figure 5 is a cross-sectional view of essential parts showing another aspect of the movable handrail, and Figure 6 is a cross-sectional view showing another aspect of connecting the handrail main body and the bracket. It is. 1... Handrail main body, 3... Bracket, 4... Movable handrail, 5... Support rod, 15... Locking protrusion, 2
0... Notch.

Claims (1)

[Claims] 1. A handrail main body that is cantilevered and is formed to be able to rotate at least horizontally has a stopper structure at the base end thereof that restricts horizontal rotation of the handrail main body, and when the handrail main body is lifted, the stopper is released and the handrail main body is horizontally rotated. In the movable handrail that is rotatable, the handrail main body is provided with an engaging protrusion that is approximately trapezoidal in plan view, and the bracket that supports the handrail main body is provided with an angle formed by the hypotenuse of the trapezoidal shape of the engaging protrusion. A stopper structure for a movable handrail, characterized in that cutouts having substantially the same expansion angle are formed.