JPH10234523A - Bottom connecting structure of bed - Google Patents

Abstract

PROBLEM TO BE SOLVED: To connect bendably and stretchably bed bottoms divided into plural parts with a simple structure. SOLUTION: Concave and convex connecting parts to engage with each other are provided at edge parts of one bottom and the other bottom to be connected. An elongated guide hole is provided at the convex connecting part in the longitudinal direction of a bed frame. The both bottoms are connected stretchably by inserting a connecting shaft penetrating the concave connecting part, through the elongated guide hole.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bottom (floor for supporting a mattress) in a bed in which a user's back can be raised and lowered by a raising and lowering mechanism.

[0002]

2. Description of the Related Art Conventionally, this kind of bottom supports a user's back, a head supporting the head, a waist bottom supporting the waist, a knee bottom supporting the knee, and a leg. (See, for example, Japanese Patent Laid-Open No. Hei 7-13622).
No. 1).

On the other hand, at the ends of the bottoms which are adjacent to each other, an uneven connecting portion which is fitted to each other is formed, and the connecting portion is passed through the connecting shaft in a skewered manner in the width direction of the bottom. There is also disclosed one in which fitting bottoms are connected in a bendable manner (Japanese Patent Laid-Open No. Hei 8-280484).

[0004]

In the case where the bottom is flexibly connected by the hinge and the connecting shaft, the bottom cannot be expanded or contracted in the length direction of the bed frame. Therefore, for example, when the mattress is placed on the bottom that bends while supporting between the back and the waist of the user, the mattress corresponding to the bent portion is compressed by the bent bottom, so that foreign matter is not felt. There is a problem that discomfort occurs.

[0005] In order to eliminate such a problem, there has been disclosed an apparatus in which a bent portion of a bottom is expanded and contracted.

This is achieved by forming one end of the bottom into a cylindrical shape and inserting a slide body provided on the other bottom into the cylindrical end so as to be slidable in the length direction of the bed frame. It is a structure that expands and contracts.

However, according to this structure, flexibility is impaired unless a large number of divided cylinders and slides are provided in the longitudinal direction of the bed frame, and the connection structure of the bottom becomes complicated. In addition, there is a defect that the elasticity is impaired due to the frictional force of the slide body during sliding, and the cylindrical end is worn due to long-term use, and the bottom rattles, resulting in a short life.

Accordingly, an object of the present invention is to improve the flexibility and elasticity of the bottom which is flexibly and elastically connected by using a simple structure.

[0009]

According to the present invention, there is provided a bed connecting structure for a bed, comprising: a plurality of bottoms which are flexibly connected to and supported by a bed frame by an up-and-down mechanism; One bottom and the other bottom connected to each other are provided with concave and convex connecting portions which are fitted to each other at their ends, and the one connecting portion has a long guide hole long in the longitudinal direction of the bed frame. And a connecting shaft that penetrates through the other connecting portion in a skewered manner is inserted into the guide elongated hole, and is formed so as to be able to expand and contract between the two bottoms in the length direction of the bed frame. It is characterized by the following.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a use state of a bottom according to the present invention. The bottom is raised by an up-and-down device, and the upper body of the user is raised. FIG. 2 shows a bottom state in which the user is lying on his back.

In FIGS. 1 and 2, (1) is a bottom made of a plurality of blow-molded synthetic resin products.
(2) a bed frame whose whole bottom (1) is supported in a horizontal state; (3) a mattress placed on the bottom (1); and (4) a part of the bottom (1), which will be described later. The undulating mechanism for undulating the undulating portion (10) of the back bottom (A) is shown.

The bottom (1) is composed of a back bottom (A), a waist bottom (12), a knee bottom (13) and a leg bottom (14), each of which is connected to each other so as to be bendable, and the back bottom (A). Is composed of an undulating portion (10) and a telescopic portion (11).

A pair of left and right undulating rods (not shown) constituting an undulating mechanism (4) is fixed to the bottom surface of the undulating portion (10) of the back bottom (A) by bolts (10A). By raising by the raising / lowering mechanism (4), the raising / lowering part (10) of the back bottom (A) rises as shown in FIG.

The telescopic part (11) bends and expands as shown in FIG. 1 in conjunction with the elevating operation of the undulating part (10).

The expansion / contraction part (11) is made of a blow-molded synthetic resin plate (11A) (11B) divided into three pieces.
In (11C), the ends are connected in a skewered manner by connecting shafts (111).

The telescopic part (11) is formed as shown in FIG. 3 and is connected to each other by a connecting shaft (111), and this telescopic part (11) is connected to the undulating part (10) and the waist bottom (12) by a connecting shaft. (111).

Each of the plates (1) constituting the elastic part (11)
1A) (11B) (11C) connecting end (122)
An uneven connecting portion (120) (121) is formed in (123), and a concave connecting portion (120) is formed at an end of the other plate (11B) corresponding to one plate (11A). (120) is cut out, and this connecting portion (12) is cut out.
0) (120) and (120) (1)
21) is formed at the end of the other plate (11B).

Then, the convex connecting portions (121) (12)
1) A guide slot (110A) (110A) which is long in the length direction of the bed frame (2) has a bed frame (2).
Are formed in an elliptical column shape in the width direction.

On the other hand, through holes (110B), (110B) and (110B) slightly larger than the outer diameter of the connecting shaft (111) are formed in the end (122) provided with the concave connecting portion (120). .

Therefore, the guide shaft (110A) and the through-hole (11A)
0B), the guide elongated hole (110A), and the through hole (110B) in that order, and the nut (111A) is screwed to the distal end of the connecting shaft (111).
A) and the plate (11B) are connected to a connecting shaft (111).
Are integrally connected with each other.

Similarly, the plates (11B) and (11B)
C) are connected, and the plate (11A) and the undulation (1) are connected.
0), the plate (11C) and the waist bottom (12) are connected by the same connection method.

Therefore, when the user is in a supine position as shown in FIG. 2, the concave connecting portions (12) provided at the ends (122) and (123) of the telescopic portion (11) as shown in FIG.
The convex connecting portion (121) enters the inside of the bed frame (2), and the total length of the extendable portion (11) in the length direction of the bed frame (2) is reduced.

However, as shown in FIG. 1, when the undulating portion (10) of the back bottom (A) is raised, the expanding and contracting portion (1) is formed.
1) is bent as a whole as shown in FIG. 5 and the entire length is elongated. The telescoping portion (11) connected to the undulating portion (10) by the upright motion of the undulating portion (10) of the back bottom (A).
Is pulled up, the convex connecting portion (121) is pulled out from the concave connecting portion (120), and the entire length is extended, and the connecting portion is connected by the connecting shaft (111). Undulating part (10) and waist bottom (1
Bend to 2).

The waist bottom (12) is integrally fastened to the bed frame (2) at the bottom (12A)..., The waist bottom (12) and the knee bottom (13), and the knee bottom (13) and the leg bottom (14). ) Means connection shaft (113) (11)
4) are connected as shown in FIG. 1 and 2, reference numeral (23) indicates a headboard, and (24) indicates a footboard.

The undulating mechanism (4) has a conventionally well-known structure for undulating the undulating portion (10) of the back bottom (A).

FIG. 6 shows a concave connecting portion (12) of the elastic portion (11).
0), the left and right ends (12) facing outward at both ends in the width direction.
2A) Notches (130) and (130) for preventing article from being pinched
(130) is provided, and when the elastic part (11) contracts,
Articles and the like are prevented from being sandwiched between adjacent connecting portions.

The notches (130) and (130)
A flexible elastic body, for example, urethane foam, rubber, or the like may be fixed in (130) to prevent the article from being pinched.

[0028]

According to the present invention, an uneven connecting portion provided on one bottom and the other bottom is connected by a connecting shaft, and one connecting portion has a guide elongated hole long in the longitudinal direction of the bed frame. Are opened, the both bottoms are free to bend and the space between the bottoms expands and contracts. Therefore, by providing both bottoms between the back bottom and the waist bottom which are undulating, the space between the bottoms is simultaneously bent and extended at the time of erecting, so that the mattress corresponding to the bottom is not compressed, and the mattress of the mattress does not feel foreign matter. The occurrence can be prevented.

Further, since both bottoms are connected by the connecting shaft, there is no frictional resistance at the time of expansion and contraction, so that the expansion and contraction and bending can be performed smoothly and abrasion can be prevented.

In addition, since the connecting shaft is inserted through the connecting portions of the two bottoms, the structure is simple, and it can be provided at a low cost with less occurrence of troubles and the like.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram illustrating a use state of the present invention.

FIG. 2 is a plan view of a bottom.

FIG. 3 is a partially exploded perspective view of a bottom.

FIG. 4 is a sectional view taken along the line IV-IV in FIG. 2;

5 shows a state in which the bottom is extended in the longitudinal direction of the bed frame in the state of FIG.

FIG. 6 is an enlarged view of a part of the bottom.

[Explanation of symbols]

 11A plate 11B plate 110A Guide long hole 111 Connecting shaft 120 Concave connecting part 121 Convex connecting part

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Nobuyuki Yamanaka 5-5-1-21 Nihonbashi, Naniwa-ku, Osaka-shi Fuji Medical Incorporated (72) Inventor Masao Kogure 724 Mogi, Ota-shi, Gunma Prefecture Masahide Co., Ltd. Inside

Claims (2)

[Claims] 1. A plurality of bottoms, which are flexibly connected to and supported by a bed frame by an up-and-down mechanism, include one bottom and the other bottom which are flexibly coupled to each other.
A concave-convex connecting portion that fits with each end is provided at each end, and a guide long hole that is long in the longitudinal direction of the bed frame is opened in the one connecting portion in the width direction.
A bottom connection structure for a bed, wherein a connection shaft that penetrates the other connection portion in a skewered manner is inserted so as to extend and contract between the bottoms in the length direction of the bed frame. 2. The bottom connecting structure for a bed according to claim 1, wherein cutouts for preventing the product from being pinched are provided at both left and right ends of the connecting portion of the one bottom in the width direction and facing outward. .