JPS5940849Y2 - Chair - Google Patents

Description

[Detailed Description of the Invention] An object of the present invention is to provide a chair in which a seat portion and a backrest portion are swingable relative to each other, and the seat portion and backrest portion can be used as a rolling bed when necessary.

Conventionally, the chair is usually used as a chair, and if necessary, the seat and backrest of the chair can be rotated with a single touch operation to extend the chair and convert it into a bed, without having to move the chair. There are chairs that double as beds that can be repurposed.

However, in the past, it could only be used for two purposes, such as a bed or a chair.
It cannot be used as a so-called health bed, where simple exercises or pine surge effects are performed on the bed, which is currently attracting attention.

Focusing on this point, the present invention has developed a multipurpose chair that can be used not only as a regular bed chair, but also as a so-called rolling bed that allows the user to easily bend and stretch on the bed. This is what we are trying to provide.

One embodiment of the present invention will be explained based on the drawings. Figure 1 shows the appearance of the chair, 1 is a seat part, 2 is a backrest part,
3 is a base, 4 is a side frame part, and the detailed structure of this chair is shown from FIG. 2 onwards.

The base 3 is configured in a rectangular frame shape with front and rear horizontal plates 5, 6 and left and right vertical plates 7, 7, and a mounting plate 8 is attached to the rear outer surface of each vertical plate 7. Link to position 9,
One end of each of the links 9 and 100 is rotatably connected in the front and back direction via pivot shafts 9a and 10a, and the other ends of each of these links 9 and 10 are attached to the side surface of the lower end of the backrest portion 2. It is pivotally attached to a certain mounting plate 11 via pivot shafts 9b and 10b so as to be rotatable in the front and rear directions.

The seat 1 is supported on a roller 12 that is rotatably mounted on a shaft between the front ends of the vertical plates 7 and 7 of the base 3.
One end of a bracket 13 that protrudes rearward is fixed to the side surface of the rear end, and the tip of this bracket 13 is connected to the pivot shaft 13.
It is pivotally attached to the mounting plate 11 at the lower end of the backrest portion 2 by a.

The pivot shaft 13a of the bracket 13 is connected to the pivot shaft 9 on the backrest 2 side of each of the links 9 and 100, as shown in FIG.
b.

It is located below the position 10b (near the tip of the backrest portion 2).

One end of a locking rod 14 is pivotally connected to a pin 15 at the center of the bracket 13, making it freely rotatable in the front-rear direction, and a projecting piece 16 is provided at the pivotally connected end to extend outward. A spring 17 is stretched between the projecting piece 16 and the bracket 13, and thereby the locking rod 14 is urged rearward with the pin 15 as a pivot point.

As clearly shown in FIG. 5, this locking rod 14 has an engaging groove 18 formed at a required portion of its lower edge, and a latch means 19 is provided at one end of this engaging groove 18. The launch means 19 pivots one end of a latch pawl 20 to the locking rod 14 with a pin 21, and urges the latch pawl 20 in a direction opposite to one end of the engagement groove 18 by a spring (not shown). The backrest 2 side pivot shaft 9b of the link 9 is latched between the end of the engagement groove 18 of the lever and the latch pawl 20.

At the free end of the locking rod 14, there is an operating piece 2 for guiding the pivot shaft 9b to the engagement groove 18 and the launch means 19.
2 are connected together.

The upper surface of the rear end of the base 3 is a slightly downwardly sloped surface 27.
(as shown in FIG. 4), and the base 3 pivotally supports rollers 24 that support the backrest 2 when the backrest 2 falls backwards to face the inclined surface 27.

As shown in FIG. 2, 23 is a stopper for restricting the rotation of the link 9 to a predetermined angle, 25 is a stopper for restricting the rearward movement of the seat 1 to a predetermined range, and 26 is a stopper for restricting the rotation of the link 9 to a predetermined range.
A roller receiver mounted on the rear lower surface of the base 3 maintains good rolling contact with the rollers 12 at the front of the base 3.

Next, to explain the function of the chair constructed as described above, first, Figure 2 shows the state in which it functions as a normal chair, with the seat part 1 in the normal reclining position and the backrest part 2 in a slightly reclined position. In this state, the backrest portion 2 side pivot shaft 9b of the link 9 is latched by the latch means/stage 19 within the engagement groove 18 of the locking rod 14, and the link 9 is in the standing posture.
is held in a backward tilted position by the stopper 23, and the stopper 25 of the seat 1 is engaged with the roller 12 to restrict rearward movement of the seat 1, thus maintaining the chair in its normal position.

The locked state between the pivot shaft 9b and the locking rod 14 at this time is as shown in FIG. 5A.

Next, the backrest portion 2 is tilted backward from the above-mentioned upright position, and the seat portion 1 is rotated from the reclined position to the upright position, respectively, to the states shown by solid lines in FIG. 3.

In this state, the locked state between the pivot shaft 9b and the locking rod 14 is the same as in the posture shown in FIG. 2, as shown in FIG. 5A.

Subsequently, when the seat part 1 is tilted slightly backward from the position shown by the solid line in Fig. 3 and brought to the position 1 shown by the imaginary line in the same figure, the locking rod 14 moves to the rear and is launched at 1. The pivot shaft 9b, which was latched by means 19, pushes open the latch claw 20 against its bias and separates from the latch claw 20.
In the state shown in the drawing, the hanging pivot shaft 9b is
It is in a state where it is latched at the end of the engagement groove 18 on the opposite side to the latching position by 9.

From this state, when the seat part 1 is rotated forward along the periphery of the lower end of the backrest part 2 while the backrest part 2 is in its 11 position, the locking rod 14 is moved forward as shown in FIG. Accordingly, the pivot shaft 9b moves relatively backward, passes over the latch pawl 20, moves to the action piece 22, and moves freely along the lower edge of the action piece 22, thereby causing the seat part 1 and the backrest part 2 to move. is completely released from the latching by the latching rod 14 and enters the state shown in FIG.

In other words, when the button is in the state shown in FIG. 4, the backrest 2 is connected to the base 3 by a two-point pivot connection using a pair of links 9 and 10, and when the backrest 2 falls backward, it will not fall horizontally. The roller 24 at the rear end of the base 3 is formed so that it can be tilted further downward along the inclined surface 27 from the posture.
Since the backrest part 2 is supported by the backrest part 2, the backrest part 2 can swing in the up-down direction and the front-back direction, while the rear end of the seat part 1 is rotatably pivoted to the backrest part 2. At the same time, the base 3 is supported by the rollers 12 at the front end thereof, so that it can swing in the up-down direction and the front-back direction as the backrest part 2 swings.

Therefore, if a person lies on the seat 1 and the backrest 2 in such a state, lying on their back or stomach with their lower back located at the joint between the seat 1 and the backrest 2, the upper or lower body If you move it appropriately, the seat part 1 and the backrest part 2 will become the fourth
As shown by solid lines and imaginary lines in the figure, it is possible to function as a so-called rolling bed by bending vertically in relation to each other.

Furthermore, after rotating the seat part 1 upward along the lower end of the backrest part 2 from the rolling bed state shown in Fig. 4 to the state shown in Fig. 3, both the seat part 1 and the backrest part 2 are moved forward. When tilted, the chair assumes the normal chair position shown in FIG.

In this case, in the state of the rolling bed, the pivot shaft 9b is sliding along the lower edge of the action piece 22 as shown by the imaginary line in FIG. 3, the pivot shaft 9b moves from the working piece 22 side to the locking rod 14 side as shown in FIG. 1 and the backrest portion 2 in a predetermined posture, the pivot shaft 9b is latched by the launch means 19 as shown in FIG. 5A.

In this way, the pivot shaft 9b is connected to the locking rod 14 or the action piece 22 no matter what posture the seat part 1 and the backrest part 2 are in.
It is in contact with the lower edge of one of the two.

As described above, according to the present invention, the lower end of the backrest 2 is swingably connected to the base 3 by a pair of links 9 and 100 that are pivoted at two points, and the rear end of the seat 1 is provided with a protruding structure. A bracket 13 is pivotally attached to the lower end of the backrest part 2, and the bracket 13 has a latch means 19 that can be freely attached to the backrest side pivot shaft 9b of the one ring 9. One end of the rod 14 is pivotally connected, and the other end of the locking frame 14 is provided with an operating piece 22 for guiding the pivot shaft 9b toward the locking rod 14.
The locking rod 14 and the operating piece 22 are supported by a spring 17 so as to come into elastic contact with the pivot shaft 9b,
The pivot shaft 9b is latched to the latch means 19 when the backrest 2 is in an upright position with respect to the seat 1, and released from the launch means 19 when the backrest 2 is in a reclined position. Because of this structure, it can be easily used as a regular chair or a bed by one-touch operation of the seat and backrest that make up the chair.

In particular, in the present invention, the upper end of the base 3, which the backrest part 2 faces when lying down, is formed into an inclined surface 27 so that the backrest part 2 can be tilted slightly downward from its horizontally lying position. A roller 24 that is approximately flush with or slightly protrudes from the upper surface of the base 3 is pivotally supported on the base 3, and a roller 1 that slightly protrudes from the upper surface of the base is also provided on the side of the base 3 that the seat 1 faces.
2, the seat part 1 and the backrest part 2 are supported by the pair of links 9, 10 and the pair of rollers 12, 24, and can swing in the vertical and longitudinal directions in conjunction with each other. Therefore, the user can use this rocking motion to perform simple bending and stretching movements, and can also be used as a so-called rolling bed.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and Fig. 1 is a general perspective view of the chair, and Fig. 2 is a side view showing the main structure of the chair, particularly showing the state in which it is used as a normal chair. 3 and 4 are side views showing the function of the chair, in particular, FIG. 4 shows the state in which it is used as a rolling bed, and FIG. 5 shows the locking rod, latch means, FIG. 3 is an explanatory diagram showing the operating state of the working rod and the pivot shaft. 1... Seat part, 2... Backrest part, 3... Base, 9
゜10...link, 13...bracket, 14...
- Locking rod, 17... Spring, 19... Launching means, 2
2... Working piece, 12.24... Roller, 27... Inclined surface.

Claims (1)

[Scope of utility model registration request] Connect the lower end of the backrest 2 to the base 3 with a pair of links 9.10
At the same time, a bracket 13 protruding from the rear end of the seat part 1 is rotatably connected to the lower end of the backrest part 2, and the bracket 13 has one of the above-mentioned links. One end of a locking rod 14 having a latch means 19 that can be used freely is pivotally attached to the backrest side pivot shaft 9b of the locking rod 9, and the pivot shaft 9b is attached to the other end of the locking rod 14. A working piece 22 for guiding the locking rod 14 to the 14 side is integrally extended, and the locking rod 14 and the working piece 22 are connected to the pivot shaft 9b by a spring 17.
The pivot shaft 9b is latched to the latch means 19 when the backrest 2 is in an upright position with respect to the seat 1, and is latched when the backrest 2 is in a reclining position. In the chair configured to be released from the means 19, the upper end of the base 3, which the backrest 2 faces when lying down, is formed into an inclined surface so that the backrest 2 can be tilted slightly downward from its horizontal lying position. 27, and a roller 24 that protrudes almost or slightly beyond the inclined surface 27 is pivotally supported on the base 3, and also on the side of the base 3 facing the force seat part 1 from the upper surface of the base. A chair that is pivoted by slightly protruding rollers 12.