JP3026227U - Handrail mounting structure for auxiliary stages of telescopic moving bleachers - Google Patents

Abstract

(57) [Abstract] [Problem] Auxiliary handrails can be effectively installed so that they can be automatically raised and lowered at the lateral side edge of an auxiliary deck installed above the uppermost deck of a telescopic mobile bleacher. To do. SOLUTION: When multi-tiered decks (2) (2a) each equipped with a handrail (1) which can be undulated on the lateral side are developed in a stepwise manner, the front end face (3a) of the skeleton body (3) is moved forward. The protruding auxiliary deck (4) is provided above the rear part of the uppermost deck (2a), and the auxiliary deck (4) and all the decks (2) and (2a) are vertically stacked to form the frame (3). In a telescopic mobile bleaching table configured to be stored in the lower storage (A), the lower part of the supporting leg (5a) of the auxiliary step handrail (5) provided at the lateral end of the auxiliary step deck (4) is A rotary shaft mounted on the lateral end of the auxiliary deck (4) at substantially the same height as the upper surface (4a) of the auxiliary deck (4).
The drive shaft of the forward / reverse rotation motor (M), which is fitted to (6) and is installed at the lateral end of the auxiliary stage deck (4) so as to be lower than the upper surface (4a) of the auxiliary stage deck (4). 7) is transmission-coupled to the rotating shaft (6), and the auxiliary handrail (5) is brought into contact with the upper surface (4a) of the auxiliary deck (4) by forward and reverse rotation of the rotating shaft (6). It is constructed so that it can be raised and lowered until it falls.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to a handrail mounting structure for an auxiliary stage of a telescopic mobile bleaching seat that is attached to the lateral side end of an auxiliary stage deck installed in the upper direction of the uppermost deck.

[0002]

[Prior art]

 Conventionally, when a multi-tiered deck with sideways undulating handrails is deployed in a staircase manner, an auxiliary deck that protrudes forward from the front end surface of the skeleton is installed above the rear of the uppermost deck. In a telescopic mobile bleaching table configured such that the auxiliary deck and all decks are vertically stacked and can be stored in the storage box under the skeleton, if the entire bleaching table is stored in the storage box, The clearance between the ceiling surface and the upper surface of the auxiliary deck is narrow, and a handrail for auxiliary steps is detachably attached to the side edge of the auxiliary deck so that it can be stored separately when removed. It is also known that the side rails of each deck are provided with handrails that are undulated by the forward and reverse rotation of the motor, respectively, as can be seen in the registered utility model No. 3017828 filed by the applicant. Has been .

[0003]

[Problems to be solved by the device]

 However, since the handrails for auxiliary stages are removable, it is extremely dangerous because the work of attaching and removing is done at the side edge of the auxiliary stage deck, which is higher than the top deck. However, there is a problem in that the risk of accidents increases if you forget to install them.

[0004]

[Means for Solving the Problems]

 The present invention solves such a problem and makes it possible to effectively attach the auxiliary handrail to the lateral edge of the auxiliary deck so that the handrail can be automatically raised and lowered. When each multi-tiered deck equipped with undulating handrails is expanded in a stepwise manner, an auxiliary deck that projects forward from the front end face of the body is provided above the rear part of the uppermost deck, and all the auxiliary decks In a telescopic mobile viewing seat constructed so that the decks of the auxiliary deck can be stored in a storage box below the body, the lower part of the supporting leg of the auxiliary step handrail provided at the lateral end of the auxiliary step deck is The height should be approximately the same as the upper surface of the step deck, and fitted to the rotary shaft mounted on the lateral end of the auxiliary step deck so that the lateral end of the auxiliary step deck is lower than the upper surface of the auxiliary step deck. The drive shaft of the forward / reverse rotation motor installed on the And transmission-coupled to the rotating shaft, in which a handrail for the support gear by normal and reverse rotation of the rotary shaft was constructed freely undulating until laid down in contact with the upper surface of the support gear deck.

[0005]

[Embodiment of device]

 FIG. 1 is a side view showing a part of the telescopic movable bleaching seat, which is either a fixed seat as shown in the drawing or a skeleton 3 having a front wall surface as shown by a virtual line 3b. A storage case A is provided in the lower side portion. When the storage case A is pulled out to the front and the multi-stage decks 2 and 2a are developed in a stepwise manner, the front end surface 3a of the skeleton 3 is moved forward. A projecting auxiliary deck 4 is provided above the rear part of the uppermost deck 2a, and the auxiliary deck 4 and all the decks 2 and 2a can be contracted and stored in the storage A so as to vertically overlap. However, the auxiliary stage deck 4 and the respective decks 2, 2a are movable in the front-rear direction by the trolleys at the lower end portions of the support frames 8 and 9a, 9 for supporting the respective decks 2, 2a. Foldable on the upper side In addition to equipping the child B side by side, a handrail 1 which can be swung up and down by a guard motor 10 installed at the rear of the decks is attached to both lateral ends of each deck 2, 2a. When it is unfolded, a step-type step 11 is installed near the rear part of the auxiliary deck 4 to have the same structure as the conventional structure.

A front bracket 12a and a rear bracket 12b are mounted on both lateral end surfaces of the auxiliary stage deck 4 at intervals in the front and rear, and the axes of the brackets 12a and 12b are the auxiliary stage deck 4's core. The support shafts 6a and the rotary shaft 6 which are at the same height as the upper surface 4a and have the same axial center direction are respectively mounted on the supporting shafts 5a and 5a. Bushings 13b and 13a fitted to the support shaft 6a and the rotary shaft 6 are fixed to the lower part so that the auxiliary handrails 5 can be laid down until they come in contact with the upper surface 4a of the auxiliary deck 4. Further, on the inner side surfaces of the lower ends of the support legs 5b and 5a, which are the lower sides of the bushes 13b and 13a, when the auxiliary step handrail 5 stands up, the tip end collides with the lateral end surface 4b of the auxiliary step deck 4. A bolt that can be fitted and can be expanded and contracted, And stoppers 14b and 14a made of nuts are provided respectively.

Above the motor stand 15 installed at the rear of both lateral ends of the auxiliary deck 4 above the upper deck 4a of the auxiliary deck 4, there is a forward / reverse rotation motor which is a guard motor. The rear end of the rotary shaft 6 which is fixed to the rotor M and is fitted into the bracket 17 with the bush 16 installed on the lateral end surface 4b of the auxiliary deck 4 and the rotary shaft 7 of the forward / reverse motor M. Are connected to each other via universal joints 18a and 18b, and a limit portion 19 for limiting the rotation of the handrail 5 for the auxiliary step is provided on the rear portion of the rotary shaft 6 so as to limit the rotation thereof.

Therefore, when the bleachers are unfolded in a staircase manner, as shown in FIGS. 1 to 5, the chairs B are unfolded and the handrails 1 are raised, and the auxiliary steps are provided. At both lateral ends of the deck 4, the auxiliary handrails 5 are erected in a safe state so that the stoppers 14b, 14a collide with the lateral end surfaces 4b of the deck and do not fall even if pushed outward. By the way, the upright posture of the auxiliary handrail 5 can be adjusted by adjusting the expansion and contraction of the stoppers 14b and 14a.

When the bleachers are retracted and stored in the storage A, as shown in FIGS. 6 to 9, the chairs B and the handrails 1 on both sides are placed on the upper surfaces of the decks 2 and 2a. In addition to folding and lying down, the standing step 11 is removed and the auxiliary shaft handrail 5 is brought into contact with the upper surface 4a of the auxiliary deck 4 while reversing the rotary shaft 6 by about 90 degrees by the forward / reverse rotation motor M. As shown in FIG. 10, it can be retracted until it is stored in the storage cabinet A, but the clearance between the upper surface of the auxiliary deck 4 and the ceiling surface of the storage cabinet A is small. Even in this case, it is possible to secure a sufficient clearance C between the upper surface of the handrail 5 for the auxiliary step that has been laid down and the ceiling surface of the storage A, and to store the handrail effectively.

[0010]

[Effect of device]

 As described above, according to the present invention, the auxiliary stage handrail 5 provided at the lateral side end of the auxiliary stage deck 4 is rotated from the standing state to the upper surface of the auxiliary stage deck 4 while rotating the auxiliary stage handrail 5 around the rotation shaft 6 by the forward / reverse rotation motor M. 4A can be automatically raised and lowered until it comes in contact with 4a, so that the auxiliary handrail 5 can be raised and lowered safely and swiftly without the need for manpower and forgetting to attach it as in the past. In addition, since the auxiliary handrail 5 can be laid down until it comes into contact with the upper surface 4a of the auxiliary deck 4, the upper surface of the auxiliary handrail 5 that has been laid down and the ceiling surface of the storage A. With a sufficient clearance between the seats and the seats, the entire bleaching seat can be reliably and satisfactorily stored in the storage case A, which has a feature that it can be suitably implemented in a compact structure.

[Brief description of drawings]

FIG. 1 is a side view showing a part of an unfolded bleacher.

FIG. 2 is a side view showing a lateral end portion of an auxiliary deck.

FIG. 3 is a plan view showing a line III-III in FIG.

4 is a cross-sectional view showing a cross section taken along line IV-IV of FIG.

5 is a cross-sectional view showing a cross section taken along line VV of FIG.

FIG. 6 is an operation explanatory view showing the operation state of FIG. 1.

7 is a front view showing the front of FIG.

FIG. 8 is an operation explanatory view showing the operation state of FIG. 4;

9 is an operation explanatory view showing an operation state of FIG.

FIG. 10 is a side view showing a state of being stored in a storage case.

[Explanation of symbols]

 1 Handrail 2, 2a Deck 3 Body 3a Front end face 4 Auxiliary step deck A Storage 4a Upper surface 5 Auxiliary step handrail 5a Support leg 6 Rotation axis M Forward / reverse motor 7 Drive shaft

Claims (1)

[Scope of utility model registration request] 1. A front end face (3a) of a skeleton body (3) when the multi-tiered decks (2) (2a) each provided with a handrail (1) which can be undulated on the lateral side are developed in a stepwise manner. The auxiliary stage deck (4) protruding further forward is provided above the rear part of the uppermost stage deck (2a), and the auxiliary stage deck (4) and all the decks (2) (2a) are vertically stacked to form the frame ( 3) In a telescopic movable bleaching table configured to be stored in a storage box (A) below, a supporting leg (5a) of an auxiliary step handrail (5) provided at a lateral end of the auxiliary step deck (4). A rotary shaft in which the lower part is placed at substantially the same height as the upper surface (4a) of the auxiliary deck (4) and is mounted on the lateral end of the auxiliary deck (4).
The drive shaft of the forward / reverse rotation motor (M), which is fitted to (6) and is installed at the lateral end of the auxiliary stage deck (4) so as to be lower than the upper surface (4a) of the auxiliary stage deck (4). 7) is transmission-coupled to the rotary shaft (6), and the auxiliary handrail (5) is brought into contact with the upper surface (4a) of the auxiliary deck (4) by the forward and reverse rotations of the rotary shaft (6). The handrail mounting structure for the auxiliary step, which is configured so that it can be raised and lowered until it falls down.