JPH0221963Y2 - - 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 spring block consisting of a large number of spring plates is pivotally mounted between the support leg side and the seat body side, and an adjustment lever is made to freely come into contact with the front side of the seat body from below, thereby adjusting the position of the seat before locking. There was no structure that could set the forward tilt angle of the body.

[The problem that the idea aims to solve]

This invention allows the rear side of the seat to be flexibly and comfortably rocked up and down by interposing a spring block that pivots at the front, and also allows for easy adjustment of the forward tilt angle of the seat before rocking. To provide a seat body that can be easily adjusted and tilted to a stable angle according to the posture of a sitting person, and that can be suitably implemented with a simple adjustment structure.

[Means to solve the problem]

In order to solve the above problems, the rocking chair of the present invention has a leg side base 2 fixed to the upper end side of the support leg 1.
The front upper part of the seat base 5 and the front part of the seat base 5 on which the back body 3 and the seat body 4 are mounted are pivotally connected via a support shaft 6, and the front part is pivoted to the support shaft 6 so that the front part is in close contact with the seat base 5. At the same time, a spring block 7 consisting of a plurality of spring plates whose rear part is resiliently opened in the vertical direction is attached to both bases 2 and 5.
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. The leg side base 2 is vertically symmetrical and formed to have a thick V-shape as a whole.
The upper end of the adjuster 8 to be inserted into the seat is brought into contact with the lower surface of the spring block 7, and a projecting piece 9 is protruded from the top surface of the tip of the seat base 5 in front of the support shaft 6, and the leg base 2 is attached to the lower surface of the protrusion 9. The upper end of the adjustment lever 10 pivotably mounted on the front end surface is brought into contact with the upper end of the adjustment lever 10 so as to be able to move toward and away from the seat side base 5, and an arc-shaped tooth profile plate 11 having a large number of tooth profiles 11a is vertically provided below the outer edge of the seat base 5. A stopper 12 bent and projected from the inner side of the rear part of the leg base 2 is made detachable so that the locking state can be adjusted.

〔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 side 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 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 on the rear edge 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, 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]

As described above, in the present invention, the front upper part of the leg side base 2 fixed to the upper end side of the supporting 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. It is vertically symmetrical and has a thick V-shape as a whole, and 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 seat is placed in front of the support shaft 6. A projecting piece 9 is provided protrudingly on the upper surface of the tip of the side base 5, and the upper end of the adjustment lever 10, which is pivotally connected to the front end surface of the leg side base 2, comes into contact with the lower surface of this protruding piece 9, and further, the seat side base 5 An arc-shaped tooth profile plate 11 having a large number of tooth profiles 11a is vertically disposed below the outer edge of the rear lower surface, and a stopper 12 that bends and projects from the rear inner side of the leg base 2 is detachably engaged with this plate to adjust the locking state. Because it is a rocking chair, the leg side base and the seat side base are stacked with a plurality of leaf springs that are shortest in the center and gradually increase in length toward both sides, making the whole V-shaped. It has a structure in which a block spring is interposed and supported, and therefore the strength of the spring can be adjusted very freely, and the force of the spring can be adjusted by combining several leaf springs of different lengths. The curvilinear change and increase is obtained, and the soft elasticity exerts a comfortable locking effect on the wide part of the seat body.Also, by rotating the adjuster star 8 and moving it up and down, the upper end of the adjuster star becomes spring-like. The locking strength can be adjusted to the required level by pushing up or lowering the block 7. Moreover, the tip side protrusion 9 of the seat side base 5, which is in front of the V-shaped spring block that performs the locking, has a locking force in front of the leg side base 2. The upper end side of the adjustment lever 10, which is pivotally attached to the upper end and can be rotated, can be moved toward and away from the upper end of the adjustment lever 10, so that the seat body 4 can be moved horizontally or tilted backwards depending on the posture of the person sitting. It is also possible to state
Furthermore, a stopper 12 provided on the rear lower surface of the seat body
The device of the present invention can be said to have a configuration that can achieve extremely wide usage conditions as a rocking chair, such as the ability to lock the chair.

[Brief explanation of the drawing]

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, 9...Protrusion piece, 10...Adjustment lever.

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 laminated 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 which are vertically symmetrical and have a thick V shape as a whole.
The upper end of the adjuster 8 which is formed into a shape and is inserted into the leg side base 2 is brought into contact with the lower surface of the spring block 7, and a projecting piece is provided on the top surface of the tip of the seat side base 5 in front of the support shaft 6. 9 is provided protrudingly, and the upper end of an adjustment lever 10 pivotally connected to the front end surface of the leg side base 2 is brought into contact with the lower surface of this lever so as to be able to come and go freely. This rocking chair has a structure in which an arc-shaped tooth profile plate 11 having a tooth profile 11a is vertically disposed, and a stopper 12 which bends and projects from the rear inner side of a leg base 2 can be freely engaged and detached from the arch-shaped tooth profile plate 11 to adjust the rocking state.