JP3143074B2 - Handrail mounting structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a detachable handrail mounting structure, and more particularly to a deck for supporting chairs arranged on stairs so that a lower stage can be sunk under an upper stage when not in use. The present invention relates to a handrail mounting structure provided at a side end of each deck in a movable spectator seat folded and stored in a wall or the like.

[0002]

2. Description of the Related Art In a multipurpose hall or the like, when a large floor surface is required, it is stored in a wall or the like, and when a large number of spectators are to be accommodated, it is pulled out from the wall or the like.
Moving bleachers may be used.

[0003] A typical example of such a movable spectator seat is one in which the whole is constructed on stairs, and chairs are arranged on a deck that forms each step. At the time of storage, the chair on the deck is folded, the lower deck is sunk under the upper deck, and stored in a wall or the like. In such a movable seat, a method of providing a handrail at a side end of each deck becomes an issue. In other words, for safety, it is necessary to arrange handrails on the side edges of the deck so that spectators and visitors near this side do not fall down,
For storage, it is convenient to remove the handrail.

FIG. 5 shows an example of such a handrail mounting structure. FIG. 5A is a view of the vicinity of the side edge of the deck from the front,
FIG. 5B is a right side view of FIG. 5A, and FIG.
It is an FF arrow line view of (b). The handrail 51 shown in FIG.
An insertion pipe 55 is provided at the end thereof, and the insertion pipe 55 is inserted into the cylindrical socket 52. The socket 52 is fixed to a socket channel 53 provided on a side surface of the deck 54. When using the movable viewing seat, the insertion pipe 55 is vertically inserted into the socket 52, and the knob 56 provided on the socket 52 is tightened so that the insertion pipe 55 is not pulled out.

[0005]

However, according to the above prior art, it is necessary to tighten the knob 56, so that it takes time to install the handrail 51. This is not only troublesome, but also may cause insufficient tightening or forgetting to tighten. When such a situation occurs, the handrail 51 cannot perform its original function. When the knob 56 is loosened to remove the handrail 51, the knob 56 may fall off the socket 52 and be lost.

As described above, when the insertion pipe 55 is attached to and detached from the socket 52, it is necessary to make the insertion pipe 55 vertical. However, the clearance between the insertion pipe 55 and the socket 52 is reduced. So it is difficult to insert or remove. The present invention has been made in view of such problems, and an object of the present invention described in claim 1 is to provide a mounting structure in which a handrail can be easily attached and detached.

The handrail mounting structure according to claim 2 is
It is intended to propose a mode in which the invention described in claim 1 can be easily realized. Still further, the handrail mounting structure according to claim 3 aims to further facilitate the handrail mounting operation.

[0008]

According to a first aspect of the present invention, there is provided a handrail mounting structure detachably attached to a fixed object. A support portion having a support surface for supporting the support of the handrail in a state inclined to the side, a facing portion provided on the fixed object and facing the support surface at an acute angle, and A restricting portion that makes the column supported by the portion immovable upward along the inclined posture, and a column supported by the supporting portion and the facing portion when fixing a handrail to the object to be fixed. And a swing prohibition portion which protrudes between the support members and prohibits the support from swinging toward the opposite portion.

The present invention described in claim 2 provides the present invention in claim 1.
Wherein the fixed object is a deck on which a chair for a movable spectator seat is placed, wherein the support portion is provided on a side end surface of the deck, and The portion is a side end surface of the deck.

According to a third aspect of the present invention, in the handrail mounting structure according to the second aspect, the swing inhibiting portion is slidable by a predetermined distance along the longitudinal direction of the support. When the support is made vertical and lowered so as to be in contact with the side end portion, the swing prohibition portion is moved upward relative to the support in contact with the upper surface of the deck. Characterized in that it is provided with an abutting surface to be made.

[0011]

According to a first aspect of the present invention, there is provided a handrail mounting structure, comprising: a support portion having a support surface for supporting a handrail post in a state of being tilted sideways on an object to which the handrail is fixed; And an opposing portion opposing at an acute angle. And furthermore
The strut supported by the support portion is immovable upward along the inclined posture, and enters between the strut supported by the support portion and the opposing portion, and the strut moves toward the opposing portion. And a rocking prohibition section for prohibiting rocking.

In this mounting structure, the handrail is mounted as follows. First, the support is inserted into an acute angle portion formed between the support surface of the support portion and the facing portion. At this time, the posture of the support does not need to be vertical, and may be any posture as long as it can enter the acute angle portion. Then, the column is inclined sideways to be supported on the support surface. If the column has a uniform axial cross section, a gap having the same angle as the acute angle portion is provided between the facing portion and the column. When the swing prohibition portion is inserted here, the mounting is completed.

That is, in this state, the handrail cannot be swung in the direction of the facing portion by the swing inhibiting portion.
Also, if the support column is to be pulled out along the support surface in this posture, the restricting portion prevents this. Therefore, the column is fixed to the object to be fixed. When removing the handrail from the fixed object, pull out the swing prohibition part from the gap between the opposing part and the support,
Swing the column and lift it in a substantially vertical direction. Even if it says "substantially vertical", it may be inclined as long as the movement of the support is not restricted by the restricting portion.

According to the mounting structure of the handrail, it is not necessary to make the column vertical when the handrail is mounted, unlike the mounting structure shown in FIG. In addition, since there is no need for a member corresponding to the fitting accuracy of the insertion pipe 55 and the socket 52,
Attachment / removal work becomes extremely easy.

In the handrail mounting structure according to the second aspect, the handrail is mounted on the deck of the movable seat.
The side end surface of the deck is an opposing portion, and the support portion is provided on the side end surface. The side end surface of the deck is usually formed into a vertical wall shape. Since the support surface of the support portion faces the wall surface at an acute angle, the support column is attached obliquely upward from the side end of the deck.

According to the second aspect of the present invention, there is no need to newly provide a facing portion.
The configuration becomes simple. The handrail mounting structure according to claim 1, wherein the handrail removing operation required each time the deck is stored and the handrail mounting operation required each time a movable viewing seat is installed can be easily performed as described above. It is suitable as an application target of. Further, by appropriately setting the support angle of the handrail in consideration of the vertical distance between adjacent decks, it may be possible to store the handrail with the handrail attached.

In the handrail mounting structure according to the third aspect, the swing inhibiting portion is configured to be slidable by a predetermined distance along the longitudinal direction of the column, and the swing inhibiting portion is formed by making the column vertical. It has a contact surface that comes into contact with the upper surface of the deck when it is lowered so as to contact the side end surface.

In this mounting structure, the handrail is mounted in substantially the same manner as described above, but before the support is inserted into the acute angle portion, the abutment surface of the swing inhibiting portion is brought into contact with the upper surface of the deck. I do. As described above, the contact surface contacts the upper surface of the deck when the support is vertical, but since the contact surface has a predetermined area, the support does not need to be exactly vertical. If the support is further lowered while the contact surface is in contact with the upper part of the deck, the swing prohibition portion does not move with respect to the deck, and only the support lowers. That is, the swing prohibition portion is moved upward with respect to the support. When the support is tilted from this state, the swing prohibition portion enters between the support and the opposing portion when the contact surface separates from the upper surface of the deck. The amount increases as the columns are tilted, as the gap increases. When the support is supported by the support surface, the support cannot be pulled upward by the restricting portion, and cannot swing.

Therefore, according to the handrail mounting structure according to the third aspect, since the time required to move the swing prohibition portion upward during mounting is eliminated, the mounting operation is further facilitated. In addition, since the swing prohibition portion is attached to the support, there is no possibility that the swing prohibition portion is lost like the knob 56.

[0020]

An embodiment of the present invention will be described below with reference to the drawings. First, FIG. 1 shows a state in which the handrail mounting structure of the present invention is applied to a movable seat, FIG. 1 (a) is a front view, FIG. 1 (b) is a right side view of FIG. 1 (a), FIG. 1C is a rear view. 1 (a) and 1 (c) show only the right end of the deck when viewed from the front.

The handrail 3 shown in FIG.
b. Two frames 7 are passed between the columns 5a and 5b, and a curtain plate (not shown) can be attached between the frames 7. Prop 5a, 5b
Is inserted into sockets 13a and 13b fixed at its lower part to the socket channel 9, and is supported in a posture inclined outward as viewed from the front as shown in FIG. That is, the sockets 13a and 13b correspond to the support of the present invention. The socket channel 9 is a member having a U-shaped cross section provided on both sides of the deck 21 (only the right side is shown in the figure), and the side surface corresponds to the facing portion of the present invention.

Posts 5a, 5b (hereinafter, unless otherwise distinguished, alphabetical characters are abbreviated as post 5. Sockets 13a, 1b
A lever 23 is provided on the side surface of the deck 21 on the side of the deck 21. The handrail 3 is operated when the handrail 3 is removed from the deck 21. FIG. 2 shows details of the vicinity of the lever 23. FIG. 2A is an enlarged view of the vicinity of the lever 23 in FIG. 1B, and FIG. 2B is a cross-sectional view taken along the line AA in FIG.
The lever 23 is a member having a U-shaped cross section as a whole, and is sandwiched between the lever cover 25 screwed to the column 5 and the column 5. The lever cover 25 itself also has a U-shaped cross section (see FIG. 2 (b)). A gap is formed. The lower end 23 a of the lever 23 enters between the column 5 and the socket channel 9 to prevent the column 5 from swinging toward the socket channel 9. That is, the lower end 23a corresponds to the swing prohibition portion of the present invention.

The pin 31 penetrates the side surface of the column 5 in the front-back direction, and both ends protrude from both side surfaces of the column 5. In the state shown in FIG. 2A, the pin 31 is engaged with the ear piece 13c of the socket 13 so that the column 5 does not move upward along the longitudinal direction. That is, ear piece 1
The 3c and the pin 31 correspond to a restricting portion of the present invention.

In the state shown in FIG. 2A, the column 5 swings leftward when the lower end 23a is
The movement of the column 5 upward is restricted by the pin 31 being locked to the ear piece 13c. That is, the column 5 is firmly fixed to the deck 21.

The lever 23 is slidable up and down a predetermined distance along the column 5. This is shown in FIG. FIG. 3 is a left side view of FIG. As shown in FIG.
Are formed with two long holes 23b. Screws for fixing the lever cover 25 to the column 5 are loosely inserted into these elongated holes 23b. As described above, since the gap between the lever cover 25 and the column 5 is made larger than the lever 23, the lever 23 can move freely along the column 5 within a range in which the screw can relatively move in the elongated hole 23b. .

FIG. 4 shows a procedure for removing the column 5. From the state of FIG. 2A, first, as shown in FIG. 4A, the lever 23 is moved as shown by the arrow B. Then, lower end 2
Since 3a rises to a position where it does not come into contact with socket channel 9, it can be swung in the direction of arrow C as shown in FIG. Then, since the pin 31 is detached from the ear piece 13c, as shown in FIG. 4C, the support column 5 is made substantially vertical, and is raised in the direction of arrow D and pulled out from the socket channel 9.

To attach the support 5 to the socket 13,
This is performed in almost the reverse order. First, the column 5 is arranged as shown by a solid line in FIG.
Then, the lower end 23a contacts the upper surface of the socket channel 9, and the lever 23 is moved upward with respect to the column 5. Then, the column 5 is swung in the direction opposite to the arrow C shown in FIG. 4B to lock the pin 31 with the ear piece 13c. This pillar 5
2A, the lower end 23a separates from the upper surface of the socket channel 9 and enters between the column 5 and the socket channel 9, and the amount of entry increases as the swing angle increases. The state shown in FIG. That is, the operation of the lever 23 is not required at all at the time of attachment.

When the handrail 3 has the above-described mounting structure, both mounting and dismounting can be easily performed. In particular, the mounting does not require the operation of the lever 23 at all, so that the setting of the movable viewing seat can be performed in a short time. And although it is easily attached, the support pillar 5 can be firmly fixed to the deck 21 by the function of the lower end 23a, the pin 31, and the ear piece 13c. Since the lever 23 is attached to the column 5, the lever 23 is not lost like the knob 56.

When viewed from the front as shown in FIG. 1 (a), the upper and lower columns 5, 5a 'are arranged so as not to interfere with each other, so that the handrail 3 is moved while being fixed to the deck 21. The seats can be stored. As described above, the handrail mounting structure to which the present invention is applied has been described. However, the present invention is not limited to this embodiment and can be implemented in various modes.

For example, in the above description, the present invention is applied to the handrail 3 of the movable seat, but the present invention can be similarly applied to any handrail that needs to be detachable. In the above description, the socket channel 9 of the movable spectator seat is used as a counterpart of the present invention, but it may be newly provided. If it can be provided on the upper surface of the fixed object, unlike the movable viewing seat, the facing portion may be provided here. In this case, the socket 13 may be provided similarly.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a mounting structure of a handrail 3 according to one embodiment of the present invention.

FIG. 2 is an enlarged view showing the vicinity of a lever 23 in the mounting structure of the handrail 3;

FIG. 3 is an explanatory diagram showing the front of a lever 23.

FIG. 4 is an explanatory diagram showing a procedure for removing a support post 5 from a deck 21.

FIG. 5 is an explanatory view showing a conventional handrail mounting structure.

[Explanation of symbols]

3: Handrail 5, 5a, 5b: Post 9: Socket channel 9a: Wall surface 13, 13a, 13b: Socket
13c ... ear piece 21 ... deck 23 ... lever
31 ... pin

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E04F 11/18 E04H 3/12

Claims (3)

(57) [Claims] 1. A handrail mounting structure detachably attached to an object to be fixed. A support provided on the object to be fixed and having a support surface for supporting a handrail support in a state of being inclined sideways. Part, an opposing part provided on the object to be fixed and facing the support surface at an acute angle, and a regulation for disabling the support supported by the support part from moving upward along the inclined posture. Part, when the handrail is fixed to the object, enters between the pillar supported by the support part and the facing part, and inhibits the pillar from swinging toward the facing part. A handrail mounting structure comprising: a movement prohibiting portion; 2. The handrail mounting structure according to claim 1, wherein the object to be fixed is a deck on which a chair for a movable viewing seat is placed, and wherein the support portion is provided on a side end surface of the deck. Wherein the facing portion is a side end surface of the deck. 3. The handrail mounting structure according to claim 2, wherein the swing prohibition portion is configured to be slidable by a predetermined distance along a longitudinal direction of the support, and the support is configured to be slidable. And a contact surface that contacts the upper surface of the deck and moves the swing prohibition portion relatively upward with respect to the support when the plunger is lowered vertically so as to be in contact with the side end portion. A handrail mounting structure, characterized in that: