JPS6013382Y2 - chair with desk - Google Patents

Description

[Detailed description of the invention] This invention relates to a chair with a desk for students installed in university classrooms.

Conventionally, this type of desk chair has a structure in which a top plate for piles is supported on the upper part of the support in a state that extends backwards, and a backrest and a seat are provided on the front side of the support, and the chairs are arranged with a space between the front and back. ,
Each seated person uses the top of the desk chair in the row in front of them as a writing table, which is very simple and eliminates waste.

By the way, in order to improve the sitting comfort of such a chair with a desk, the backrest is fixed in a moderately backward-leaning state via a bracket on the front side of the support, and the seat and back can be rotated using a bracket protruding from the front of the support. The seat is pivotally connected to the seat so that the seat can be raised from an inverted state where it can be seated in a substantially horizontal position to ensure a wide passage between the seat and the front row when no occupant is present.

However, when the seat is rotated to stand up, it does not become vertical as it hits the fixed backrest, and the pivot point of the seat is located far forward from the support due to the bracket, and the backrest is Because the seats were fixed in a backward tilted position, the protrusion width from the front of the pillars when the seats were raised (flipped) was large, which had the disadvantage that the passageway between the seats and the front row could not be made very wide.

This idea was devised in view of the above circumstances, and its purpose is to provide comfortable sitting as the backrest tilts backwards as the seat falls over almost horizontally, and also to keep the seat and backrest in place when the seat is stood up. A chair with a desk that stands vertically with the back and the support closely overlapped in front of the support, making the width of the forward protrusion very compact and making it possible to maximize the width of the passage between the front row and the front row. It is about providing.

In other words, the chair with a desk of this invention has a backrest placed in front of the support column, which is swingable in the front and back direction by pivoting the upper part of the backrest to the upper end of the support. A vertically long guide is attached to the support so that the end portion thereof can be rotated, and an arm is provided rearwardly projecting from the seat, and a sliding body provided at the rear end of the arm is slidably fitted so as to be able to move up and down for a predetermined stroke. so that when the seat falls forward, the lower part of the backrest moves forward together with the seat due to the arm that is slid into the guide.
The seat is held in an approximately horizontal overturned position, and the backrest is held in a backwardly tilted position, allowing the seated person to sit comfortably. Conversely, when the seat is raised, the lower part of the backrest also recedes, allowing the seat and backrest to tilt backwards. Both backrests are constructed so that they stand perpendicular to the front surface of the support column in a state where they overlap tightly.

An embodiment of this invention will be described below with reference to the drawings.

In the figure, 1 is a chair with a student desk for 3 people.A pair of left and right columns 3 are erected on a base 2.
An intermediate leg 5 is provided halfway down the transverse member 4, and two intermediate supports 6 are erected on the transverse member 4 at equal intervals.

Each of the left, right and intermediate columns 3 and 6 has a top plate holder 7 at the upper end that projects backward in an inverted shape, and on the top plate holder 7 at the upper end of each of these columns 3 and 6, there is a top plate holder 7 for a pile. It is attached by screws or the like so that the top plate 8 is placed thereon.

Note that a small item storage shelf 9 is provided below the top plate 8.

In addition, 10 and 11 in the figure are a set of backrests and seats respectively arranged on the front side of the area between the respective pillars 3 and 6,
The backrest 10 and the seat 11 have a structure in which a cushioned back plate 10b and a seat plate 11b are fitted and fixed to U-shaped frames 10a and lla, respectively.

First, the backrest 10 is provided with a pair of left and right rectangular swinging arms 12 protruding rearward from both upper ends of the frame 10a, and these left and right swinging arms 12 are arranged between the upper ends of the columns 3 and 6. By being pivotally connected by pins 13, they are attached so as to be swingable in the front and rear directions.

A pair of left and right rectangular seat support parts 14 are provided at the lower ends of both sides of the frame 10a of the backrest 10, projecting forward at a substantially right angle.
Upper end portions on both sides of la are rotatably pivoted via pins 15, respectively.

In addition, this seat 11 has a pair of left and right arms 16 bent in an inverted shape from both sides of the frame lla, respectively.
A round bar-shaped shaft 1 is provided at the rear end of the left and right arms 16.
7 is fixed, and roller-shaped sliding bodies 18 are attached to the left and right ends of this shaft 17, respectively.

On the other hand, vertically elongated guides 19 are attached to the front surface of each of the pillars 3 and 6 from near the upper surface of the transverse member 4 to an appropriate height above, facing each other in pairs on the left and right sides of each of the seats 11.

Each of the left and right guides 19 has a lip groove shape in cross section, into which the sliding body 18 is slidably fitted so as to be vertically movable, and has a structure in which the upper end is closed to prevent the sliding body 18 from moving further upward. be.

Thus, in the desk chair 1 having the above-described configuration, when the seated person rotates the seat 11 by pulling it forward with his/her hand, the seat 11 rotates about the pin 15 and protrudes rearward. The sliding body 18 of the arm 16 is guided by a guide 19 and moves upward.

As a result, the seat 11 begins to rotate while being pushed forward by the arm 16, and along with this, the backrest 10 also swings so that its lower part moves forward, as shown by the solid line in Figure 4a. The seat 11 is in a substantially horizontal overturned state, the backrest 10 is in a moderately backward tilted state, and the sliding body 18 is in a state where the guide 19
By hitting the upper end of the seat 11, further movement is prevented, and the person seated on the stationary waist can sit comfortably on the seat 11.

In this state, the seat 11 cannot rotate in the standing direction unless it moves forward once in conjunction with the backrest 10 due to the tension of the arm 16, so the fulcrum of the seat 11 (pin 15)
Even when a load is applied further to the rear, the device remains in an overturned state without moving.

Next, when the seat 11 is to be raised (jumped up) from the fallen state shown by the solid line in FIG. 4a, the front end of the seat 11 is pulled up by hand.

As a result, the seat 11 rotates upward about the pin 15 and moves forward together with the lower part of the backrest 10 so that the sliding body 18 of the arm 16 descends along the guide 19, and as shown in FIG. 4a. After reaching the state shown by the imaginary line, the sliding body 18
As the seat 11 and the lower part of the backrest 10 are lowered further, the seat 11 and the lower part of the backrest 10 are not pulled rearward, so the seat 11 rotates upward, and the backrest 10 swings backward using the pin 13 as a fulcrum. As shown in FIG. This fits within a space approximately equal to the thickness of both columns from the front of the column, allowing for the widest possible passage between the column and the front row.

In addition, when the seat 11 is rotated to stand up, it will automatically rotate to the vertical standing position and stop due to the weight of the seat 11 and the backrest 10 from around the state shown by the imaginary line in FIG. 4a. .

This invention has been developed as described in detail above, so that when the seat falls down almost horizontally, the backrest tilts backwards, making it comfortable to sit on, and when the seat is not in use, it can be raised to flip up. The seat and backrest stand vertically in a state where they closely overlap with the front of the column, and are compactly stored without protruding greatly in front of the column, making it possible to maximize the passage space between the front row and the column. This is practically advantageous.

[Brief explanation of the drawing]

The drawings show one embodiment of this invention, and Fig. 1 is a perspective view, Fig. 2 is a plan view, Fig. 3 is a front view, and Fig. 4 a and b.
Figure 5 is a side view showing the seat in an inverted and upright state, and Figure 5 is a partially exploded perspective view. 1...Chair with desk, 2...Base, 3
, 6... Support column, 4... Horizontal member, 5...
...Middle leg, 7...Top plate holder, 8...
... Top plate, 9 ... Shelf, 10 ... Backrest, 11 ... Seat, 10 at 11 a"" frame, 10b ... Back board ,llb...
Seat plate, 12... Swing arm, 13... Zen, 14... Seat support part, 15... Pin, 16... Arm , 17...Shaft, 18...Sliding body, 19...Guide.

Claims (1)

[Scope of utility model registration request] In a chair with a desk, which has a backrest and a seat on the front side of a support that supports a top plate for piles at the top, the backrest can be swung back and forth by pivoting the upper part of the backrest to the upper end of the support. The rear end of the seat is pivotally attached to the lower part of the backrest so that the seat can stand up or fall forward so as to overlap the front surface of the backrest, In addition, by providing an arm that protrudes rearward from the seat, and slidingly fitting a sliding body provided at the rear end of the arm so that it can move up and down within a predetermined stroke, the rotation of the seat can be controlled from a vertical upright state to an approximately horizontal falling state. A chair with a desk characterized in that the support is provided with a vertically elongated guide that regulates the movement.