JPH0321640Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a chair with a table, and more specifically, when the table is rotated between the upper surface position of the armrest and the vertical position on the side, the rotational movement is buffered, and the impact during rotation is The purpose of the present invention is to provide a chair with a table that does not give rise to problems, the gist of which is to provide a fixing part consisting of a hanging piece with a pivot hole provided under the base plate for fixing to the armrest of the chair; The upper and lower parts of the table are formed by penetrating and supporting the vertical piece of the fixed part through the shaft support hole, and providing elastic biasing means to provide frictional resistance between the vertical piece and the vertical piece, and fixing the shaft support cylinder at the appropriate position. The present invention is disclosed as comprising: a rotation support shaft; and a table back-and-forth rotation portion which is inserted into the shaft support cylinder of the support shaft and has one end fixed under the table.

That is, the details of the present invention are shown by the illustrated embodiment, in which 1 is a fixed part and 2 is the fixed part 1.
A rotation support shaft 4 for vertically rotating the table 3 attached to the table 3 is fixed under the table 3, and by connecting with the rotation support shaft 2, the table 3 can be moved back and forth.
This is a rotating part for rotating 180°.

That is, the fixing part 1 has a pivot hole under the base plate 6 for fixing it to the armrest 5 of a general chair (not shown) consisting of a seat plate, backrest, legs, etc., for example, in the illustrated example, to the lower surface of the armrest 5. Appropriate number of hanging pieces 8 with 7 attached,
In the illustrated example, two pieces are placed facing each other, and the base plate 6 of the fixing part 1 is fixed to the lower surface of the armrest 5 with screws. The lengthwise side end of the base plate 6 of the main fixing part 1 is bent upward into an L shape, and the bent piece 9 is fitted into the long groove 10 formed in the lengthwise direction of the lower surface of the armrest 5, and fixed with screws. It regulates horizontal shake.

Next, the table 3 is inserted and supported by this fixed part 1.
The vertical movement support shaft 2 of the table 3 is for rotating the table 3 up and down, that is, from the horizontal state in which it is used, to the side vertically up and down, that is, from the state in which it is used, by 90 degrees to the side.
is a single shaft that can be inserted into the shaft support hole 7 of the hanging piece 8 in the fixing part 1 as shown in the figure, and between the appropriate position of this shaft and the hanging piece 8 of the fixing part 1. In the case of the elastic biasing means 11 for applying frictional resistance when the shaft rotates, a cap 13 is fixed to one end of the shaft with a screw 12, and the cap 13 is fixed to one end of the shaft.
An elastic biasing means 11 having a spring 14 in a compressed state is provided between the inner surface of 3 and one side of the vertical piece 8, and a shaft support cylinder 15 is fixed to the other end of the shaft body in a perpendicular manner. There is. This pivot support tube 15 has to be set so that it projects laterally from the bottom surface of the armrest 5 when the rotation support shaft 2 is pivotally supported on the bottom surface of the armrest 5 of the chair. A fixing member 16 extends between the support tube 15 and the shaft body.
In the embodiment, the shaft support cylinder 15 is fixed inside a substantially U-shaped member 16 by welding or the like, and the free end side of the U-shaped fixing member 16 is fixed to the support shaft 2, so that the shaft can be fixed. 2 and the shaft support cylinder 15 are set so that they can move together with each other. This rotation support shaft 2 is formed with a step 17 for engaging a stopper, which will be discussed further below. That is, at the upper end of FIG. 1, which is the tip side of the rotation support shaft 2, in order to obtain a rotation state of 90 degrees, the rotation support shaft 2 has an initial point and an end point of rotation relative to the table 3. Two stop steps 17, 17 are provided to be determined. This step 17 is formed by, for example, processing the upper end of the U-shaped member 16, and one end of the stop step is located on the inner surface of the armrest 5 in the figure, and the other end is located on the outer surface of the armrest 5. It is set at a location corresponding to the location of . As shown in FIG.
The table 3 provided with a stopper is set in such a state that it can rotate 180 degrees around a rotating part 4. still,
The U-shaped fixing member 16 serves as this stop step 17.
However, the purpose can be achieved simply by forming protrusions at the two positions of the rotation support shaft 2.

Next, the back-and-forth rotating part 4 of the table 3 is inserted into the shaft support cylinder 15 of the support shaft 2 and can be rotated, and one end thereof, the upper end in FIG. 1, is fixed under the table 3. The rotating part 4 is fixed under a single board 18, and a stopper 19 that engages with the stopper step 17 of the rotating support shaft 2 is provided on the board 18 alongside the rotating part 4. Furthermore, in order to prevent the table 3 from rotating horizontally in the state shown in FIG.
In particular, further stops 20 are provided to prevent the table 3 from pivoting towards the inside of the chair in the installed state. Note that 21 is a stop that is fixed to the lower end of the rotating part 4 with a screw 22 to prevent it from coming off when the rotating part shaft 4 is inserted into the shaft support cylinder 15, and 23 is the table 3 for the armrest 5. It is a shock-absorbing member. Therefore, as shown in Fig. 1, table 3
rotates in the direction of arrow a around the pivot shaft 2 from the solid line state, which is the usage state in Figure 1, and then rotates in the direction of arrow b around the rotating part 4 to change between the usage state and non-use state. The status is shown.

As mentioned above, the chair with table according to the present invention is
A fixed part fixed to an armrest of a chair, and a vertically movable support shaft of a table provided with elastic biasing means to provide frictional resistance between the fixed part that is supported by the fixed part and the fixed part, and the table is rested on the armrest. The table is made up of a rotating part that rotates back and forth while the table is set in vertical positions on the sides, top and bottom. The table of this chair with a table can be rotated vertically, and the table can be rotated forward and backward from the vertical position on the side of the armrest due to the front and back rotating parts. When using the table, the vertical movement of the armrest in the lateral vertical position is damped by an elastic biasing means provided between the pivot shaft and the fixed part to provide frictional resistance. It is possible to stably stand still in the same position, eliminate sudden rotations and shocks during rotation, and simply fix the shaft support cylinder at the appropriate position of one rotation support shaft, for example, at one end. Therefore, the table can be easily fixed to the armrest by simply inserting this shaft into the vertical piece of the fixing part and attaching the elastic biasing means. Furthermore, when a table is in use, that is, in a horizontal state, when writing, for example, there is a possibility that vertical vibrations may occur due to the pressure of the pen, which may make writing work difficult. Now, a spring is inserted in a compressed state between the inner surface of the cap fixed to one end of the pivot shaft, which is rotatably supported by a fixed part fixed to the underside of the armrest, and the hanging piece of the fixed part. By providing an elastic biasing means for applying frictional resistance, vertical vibration of the table can be suppressed and the table can be kept stably stationary. Furthermore, since the elastic biasing means is provided on the shaft of the pivot shaft disposed on the lower surface of the armrest in parallel with the length direction of the armrest, the means does not protrude from below or from the sides of the armrest. Therefore, there is no risk of the user accidentally touching it and getting hurt by the springs, etc., and since there are few protruding parts, it can be configured compactly in terms of appearance. In addition, the fixing part, which is subject to the greatest stress even during use, is fixed by fitting the L-shaped bent piece formed at the longitudinal side edge of the board into the long groove formed in the longitudinal direction of the lower surface of the armrest. Therefore, it can be positioned and fixed, and it can be installed firmly without any lateral wobbling. Moreover, the number of parts can be reduced, and costs can be reduced.

[Brief explanation of the drawing]

Fig. 1 is an explanatory perspective view of the table attached to the armrest of a chair, as seen from the lower outer surface of the table when it is in use, i.e., positioned horizontally; Fig. 2 is an exploded perspective view of the table with its parts disassembled; FIG. 3 is an explanatory perspective view illustrating the positional relationship between the stepped portion provided on the shaft support cylinder of the rotation support shaft and the stopper provided under the table. 1: Fixed part, 2: Rotating shaft, 3: Table,
4: Rotating part, 5: Armrest, 6: Substrate, 7: Pivot hole, 8: Vertical piece, 9: Bent piece, 10: Long groove, 11:
Elastic biasing means, 12: screw, 13: cap, 1
4: Spring, 15: Axial support cylinder, 16: Fixed member, 1
7: stop step, 18: board, 19: stopper,
20: Stopper, 21: Stop part, 22: Screw,
23: Shock buffer member.

Claims (1)

[Claim for Utility Model Registration] Under the board for fixing to the armrest of a chair, vertical pieces with pivot holes are provided facing each other, and L-shaped bends are formed on the longitudinal side ends of the board. a fixing part formed by fitting and fixing the piece into a long groove formed in the lengthwise direction of the lower surface of the armrest; a shaft body penetrating and supported through the shaft support hole of the vertical piece of the fixing part; and one end of the shaft body. An elastic biasing means for providing frictional resistance is provided by inserting a spring in a compressed state between the fixed inner surface of the cap and the vertical piece, and a shaft support cylinder is fixed at the other end so as to be perpendicular to the eccentric position. A table comprising: a vertically movable support shaft for a table; and a table longitudinally rotating portion having one end fixed under the table and rotatably attached by being inserted into a shaft support cylinder of the rotary support shaft. Accompanied chair.