JPH0221962Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a rocking chair, and is applied to the field of rocking type chairs.

[Conventional technology]

Conventionally, a chair has a structure in which a spring block consisting of a large number of spring plates is pivotally connected between the support leg side and the seat body side, and the spring block is brought into contact with an adjuster star to adjust the rocking strength. I stopped talking.

[The problem that the idea attempts to solve]

This invention allows the rear side of the seat to be flexibly and comfortably rocked up and down by intervening a spring block that pivots at the front, and the locking strength can be adjusted well by directly adjusting the spring block using the adjuster. The present invention provides a simple adjustment structure that can be easily implemented.

[Means to solve the problem]

That is, in the present invention, the front upper part of the leg-side base 2 fixed to the upper end side of the support leg 1 and the front part of the seat-side base 5 on which the back body 3 and the seat body 4 are mounted are connected to the support shaft 6. A spring block 7 consisting of a plurality of spring plates is pivotally supported on this support shaft 6 so that the front part is in close contact with the base and the rear part is elastically opened in the vertical direction. The spring block 7 is made up of a plurality of stacked spring plates whose lengths are the longest on both outer sides that contact the bases 2 and 5, and whose lengths are gradually shortened toward the center. and an adjuster star 8 which is vertically symmetrical and formed in a V-shape as a whole and is inserted into the leg side base 2.
The upper end is brought into contact with the lower surface of the spring block 7, and an arc-shaped tooth profile plate 11 having a large number of tooth profiles 11a is suspended from the rear lower surface of the seat side base 5 at the lower outer edge. This rocking chair has a structure in which a stopper 12 which bends and projects can be freely engaged and detached to adjust the rocking state.

〔Example〕

Figure 2 shows a side view of the entire Rock King chair.
The bottom center of the leg side base 2 which slopes forward upward is fixed to the upper end of the telescopic support leg 1 which has a large number of casters 13 at the bottom and stands upright, and has a U-shaped cross section and extends upwardly from the inside of the leg side base 2. The front part of the seat base 5 extending in the front-rear direction is pivoted to a support shaft 6 installed horizontally above the front part of the leg base 2, and is attached to a seat mounting plate 14 fixed to the upper surface of the seat base 5. The seat height is adjusted by attaching the seat body 4 in which the back body 3 and the seat body 4 are integrally formed with an L-shaped side surface, and using the seat height adjustment lever 15 which has a U-shaped plane and extends to the right side of the leg side base 2. It is installed and configured so that it can be adjusted and operated.

7 is a spring block consisting of multiple spring plates,
The spring plates 7a and 7b at the upper and lower ends have a spring structure in which the rear ends are pressed in the vertical direction and open.
The support 16, which is rotatably fitted to the support shaft 6, is aligned with the front upper surface of the spring block 7, and both bolts and nuts 17 are inserted into the front of the support 16 and the spring block 7. The rear end of the spring plate 7a, which is on the rear side and above the rear of the spring block 7, is on the upper surface of the seat base 5, and the rear end of the spring plate 7b, which is on the rear lower side of the spring block 7, is on the leg base 2. A nut 18 is fixed to the bottom part of the leg side base 2 slightly forward of the supporting leg 1, and a nut 18 is fixed to the bottom part of the leg side base 2 slightly in front of the supporting leg 1. The upper end of the adjuster star 8, which has a handle 19 and is screwed into the nut 18, is installed so as to come into contact with the lower surface of the rear end side of the spring plate 7b, which is the lower surface side of the spring block 7.

Leg side base 2 from one side of the front part of the seat side base 5
The protruding piece 9 is extended toward the front of the leg side base 2.
An adjustment lever 10 for vertical direction is rotatably supported via a bolt 20 on the front surface of the adjustment lever 1.
When the upper end 10a of 0 comes off to the side of the protruding piece 9, the seat base 5 becomes approximately horizontal, and the adjustment lever 1
When the upper end 10a of the seat base 5 comes into contact with the lower surface of the protruding piece 9, it is pushed up and the seat base 5 is installed and configured so as to be inclined forwardly high and rearwardly low.

A large number of tooth shapes 11a are formed at the rear end of the tooth profile plate 11 whose upper end is fixed to the rear part of the seat side base 5 and are vertically disposed thereon, and a stopper is provided on the inner side of the leg side base 2 on the side of the tooth profile plate 11. The plate 12a is pivotally supported via a support shaft 21, and each tooth profile 1 is provided at the rear of the stopper plate 12a.
The stopper plate 12, which is a projecting piece that can be engaged with the plate 1a, is bent and formed, and a long hole 22 is formed in the front part, and a torque spring 23 interposed in the support shaft 21 biases the stopper plate 12a to rotate in the engagement direction. A locking spring plate 2 is installed so as to stand upright inside the leg side base 2.
4 is installed so that the front part of the stopper plate 12a can be engaged with when the lock is released, and both sides 25a and 25b of a planar U-shaped lock lever 25 extending toward the left outer side of the leg side base 2 are attached to the leg side base 2. The extension rod 25c is fitted with some play in the side portions of the extension rods 25a and 25c, which extends further inwardly from the side portions 25a. Configure.

[Effect]

Therefore, when the stopper 12 is separated from the toothed plate 11 and unlocked as shown in FIG. It will be in a state where it can be rotated and locked.

In this state, when the adjuster star 8 is rotated and moved up and down, the upper end of the adjuster star 8 pushes up or lowers the spring block 7, so that the locking strength by the spring block 7 can be adjusted.

Adjustment lever 1 as shown in FIGS. 6 and 7
By making sure that the upper end 10a of the seat 4 does not touch the protruding piece 9, the seat body 4 before locking can be set in a horizontal state as shown in FIG. Adjustment lever 1
When the adjustment lever 10 is rotated so that the upper end 10a of 0 contacts the lower surface of the protruding piece 9, the protruding piece 9 is pushed up so that the back body 3 becomes high in the front and low in the rear as shown in FIG. This means that the seat body 4 can be tilted according to the posture of the person sitting.

Furthermore, when the lock lever 25 is pushed down in the direction of the arrow A, the extension rod 25c rises in the direction of the arrow B, pushing up the front part of the stopper plate 12a. As shown in FIG. 2, the stopper 12 engages with the tooth profile 11a of the tooth profile plate 11 to lock the device, and this locking can be performed with the back body 3 in a desired inclination state by selecting the position of the tooth profile 11a. To release the lock, when the lock lever 25 is raised upward, the stopper plate 12a rotates and the stopper 12 is moved to the toothed plate 11 as shown in FIG.
This means that you can move away from the rock.

[Effect of idea]

In this way, the Rotsuking chair in this invention is
The front upper part of the leg side base 2 fixed to the upper end side of the supporting leg 1, the seat side base 5 on which the back body 3 and the seat body 4 are attached.
A spring consisting of a plurality of spring plates is configured to be pivotally connected to the front part of the body via a support shaft 6. A block 7 is interposed between the bases 2 and 5, and the spring block 7 is interposed between the bases 2 and 5.
A plurality of spring plates are laminated, each having the longest length on both outer sides that contact the outer side of the base plate 5 and gradually decreasing in length toward the inner center, and are vertically symmetrical to form a V-shape as a whole. The upper end of the adjuster star 8 inserted into the side base 2 is brought into contact with the lower surface of the spring block 7, and furthermore, an arc-shaped tooth profile plate 11 having a large number of tooth profiles 11a is vertically provided below the outer edge of the rear lower surface of the seat base 5. This rocking chair has a stopper 12 that bends and projects from the rear inner side of a leg side base 2 and can be freely engaged and detached to adjust the rocking state.

As mentioned above, the device of the present invention has a plurality of plate springs stacked together between the leg side base and the seat side base, with the center being the shortest and the length increasing sequentially towards both sides. It has a structure in which a V-shaped block spring is interposed and supported, so the strength of the spring can be freely adjusted, and the spring can be adjusted by combining several leaf springs of different lengths as described above. The force increases in a curved manner and has a soft elasticity, which makes it possible to flexibly and comfortably rock an extremely wide area behind the comparatively front end of the seat body 4. Moreover, since the spring force on the lower surface side of the spring block 7 that contacts the leg side base 2 can be adjusted by the adjuster star 8, the most suitable locking strength can be adjusted depending on the weight of the person sitting or as desired. Easy adjustment is obtained, and furthermore, by engaging the stopper 12 in the desired position of the toothed plate 11 projecting on the rear underside of the chair seat, the locking can be achieved within a defined locking range by the action of the spring block 7. To provide a chair in which a seat body 4 can be surely locked in a desired posture, and a stable locking state can be obtained at a desired position with a relatively simple structure.

[Brief explanation of drawings]

Figure 1 is a side view of the main parts of an embodiment of the present invention;
Figure 2 is a side view of the Rock King chair, Figure 3 is an enlarged view of a part of it, Figure 4 is a plan view of a part of Figure 3,
5 shows a part of FIG. 1, FIG. 6 is a perspective view of a part of FIG. 4, FIG. 7 is a front view of FIG. 6, and FIG. 8 is an explanatory diagram of the operation of FIG. 7. 9 shows a part of FIG. 1, FIG. 10 is a partially cutaway and exploded perspective view of a part of FIG. 9, and FIG. 11 is an explanatory diagram of the operation of FIG. 12 and 13 are explanatory diagrams shown in side views. 1... Support leg, 2... Leg side base, 3... Back body,
4... Seat body, 5... Seat side base, 6... Support shaft, 7
...Spring block, 8...Asia star.

Claims (1)

[Scope of utility model registration request] The front upper part of the leg-side base 2 fixed to the upper end side of the support leg 1 and the front part of the seat-side base 5 on which the back body 3 and the seat body 4 are mounted are pivotally connected via a support shaft 6. A spring block 7 is interposed between the bases 2 and 5, and is made up of a plurality of spring plates that are pivotally supported on a support shaft 6 so that the front part is in close contact with the base and the rear part is resiliently opened in the vertical direction. The block 7 is made up of a plurality of stacked spring plates whose lengths are the longest on both outer sides that contact the bases 2 and 5, and whose lengths are gradually shortened toward the inner center, and are vertically symmetrical and form a V-shape as a whole. The upper end of the adjuster 8 inserted into the leg side base 2 is brought into contact with the lower surface of the spring block 7, and the arcuate tooth profile plate 11 has a large number of tooth profiles 11a on the lower outer edge of the lower rear surface of the seat base 5.
The rocking chair has a structure in which a stopper 12 that bends and projects from the rear inner side of a leg side base 2 can be freely engaged and detached from the stopper 12 to adjust the rocking state.