JP2001260733A - Stowable table mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent looseness of a table when a stowable table mechanism to be stowed in the armrest of an automobile seat or a console box is in use. SOLUTION: The stowable table mechanism comprises a shaft 1 having a table base 7 at its upper end; an intermediate pipe 2 allowing the shaft 1 to be inserted therein; and a fixed pipe 3 allowing the intermediate pipe 2 to be inserted therein. Bushes 4 and 6 each made of resin are interposed respectively between the shaft 1 and the intermediate pipe 2 and between the intermediate pipe 2 and the fixed pipe 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a retractable table mechanism provided on an armrest of a vehicle seat or a console box.

[0002]

2. Description of the Related Art A conventional table mechanism of this type is constructed so that a single table itself can be folded and housed inside an armrest as disclosed in Japanese Patent Laid-Open No. 3-50037. ing. Then, the folded table can be lifted by lifting it from the storage section by a finger or a lift.

[0003]

Therefore, since this conventional product has a structure in which the table is divided into two and folded, the amount of vertical movement from or into the armrest can be small.

However, when writing a document or the like, a single sheet that cannot be folded is preferable because it has no steps or gaps. However, when a single table is used, the amount of storage of the table in an armrest or the like and the amount of projection from the armrest or the like become large.

[0005] For this reason, especially when the table is used, rattling occurs on the table, making it difficult to use the table. In addition, there is a possibility that abnormal noise may be generated due to vibration of the vehicle.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to prevent a table from rattling during use in a table which is protruded upward when used during use.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, a retractable table mechanism according to the present invention comprises a shaft having a circular cross section for connecting a table board to an upper end so as to be capable of being turned upside down, and sliding the shaft inside. An outer surface of the shaft, comprising: a reversible pipe having a rectangular cross section to be movably inserted; and a fixed pipe fixed to the frame for fixing the console box or the armrest by inserting the receivable pipe so as to be able to protrude and retract in the axial direction. And an inner surface of the relay pipe, and a bush for absorbing backlash is interposed between the outer surface of the relay pipe and the inner surface of the fixed pipe.

[0008] With the above construction, the splicing pipe from the inside of the fixed pipe, and the shaft connecting the table board to the upper end from the splicing pipe are sequentially drawn out, the table board rises, and the pipe is interposed between the pipes and the shaft. The rattle preventing bush can prevent rattling of the table board.

Further, the bush interposed between the outer surface of the shaft and the inner surface of the relay pipe is a bush A fixed to the upper end of the relay pipe and having an inner diameter substantially equal to the outer diameter of the lower end of the shaft. The lower portion of the shaft is formed of a large diameter portion at the lower end portion and a medium diameter portion provided at the upper portion of the large diameter portion with a small diameter relative to the large diameter portion, so that the shaft is fed out from the relay pipe. In the use state of the table board, no backlash occurs on the shaft.

Further, below the large diameter portion of the shaft,
A large diameter portion is provided with a small-diameter substantially circular engagement portion having a small diameter, a washer engaging the engagement portion on the outer periphery of the engagement portion, and a sliding contact with the inner surface of the relay pipe and a lower end of the shaft. Since the shaft is not rotated by mounting the bush B to be attached, the table board is fixed, and the use state of the table board is improved.

In addition, a bush C provided between the outer surface of the relay pipe and the inner surface of the fixed pipe has substantially the same length as the entire length of the fixed pipe and is hooked on the fixed pipe. By providing the projecting elastic contact protrusion on the outer surface, the support performance of the relay pipe to the fixed pipe is improved, and it is possible to prevent the axial play of the relay pipe.

Further, by providing a concave groove in which an elastic contact projection of the bush C is engaged in an axial direction on the outer surface of the relay pipe, the supportability of the relay pipe to the fixed pipe can be improved.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a use state of a table board (7) provided in a console box (71) provided between left and right seats, and the table board (7) is stored in the console box (71) when not in use. I have.

On the front side of the console box (71),
A slit-shaped storage portion (72) is provided along one outer surface, and a lock on a shaft supporting the table board (7) is released by operating an operation portion (70) provided on the outer surface. Thus, the table board (7) in use is stored in the storage section (72).

FIG. 2 shows the stored state of the table board (7). The table board (7) can be turned upside down on the upper end of the shaft (1), that is, it can be turned horizontally rather than vertically, or in the opposite direction. Mounted to move.

The fixed pipe (3), which is a support member for supporting the shaft (1), is integrated with a base plate (34) welded to the frame (32) (32) of the shaft by a mounting plate (30). Has been concluded.

FIG. 3 shows a retractable table mechanism according to the present invention. In FIG. 3, (2) shows a relay pipe (2) housed in a fixed pipe (3), and the relay pipe (2).
Is housed so as to be fed upward from the inside of the fixed pipe (3), and the shaft (1) is housed therein.

The above-mentioned shaft (1) is formed to have a solid circular cross section, but the relay pipe (2) and the fixed pipe (3) are each formed in the shape of a rectangular tube, and the fixed pipe (3) is formed as described above. It is fixed as follows. In the drawing, (33) is a mounting piece for fixing the fixed pipe (3) to the console box (71), (31) is a locking hole for fixing a lower portion of a bush C described later, and (32) is a fixed pipe (3). 2) shows caps for closing the lower opening.

The shaft (1) has a locking groove (1).
3) is cut out, and the operating portion (70) is
When a stopper (not shown) provided on the side engages,
The shaft (1) is fixed at a predetermined height.

Accordingly, the table board (7) is accommodated in the console box (71) by sequentially feeding out the intermediate pipe (2) from the fixed pipe (3) and the shaft (1) from the intermediate pipe (2). Part (72)
The table board (7) is configured to be in a use state by projecting from the outside and rotating horizontally around the upper end of the shaft (1). In addition, table board (7)
Has a structure in which a vertical state and a horizontal state are held by a stopper (not shown).

In the drawing, (4) shows a resin bush A provided at the upper end of the relay pipe (2).
The shaft (1) is inserted through (4). A bush C is provided inside the fixed pipe (3).

FIG. 4 is an exploded view of the retractable table mechanism shown in FIG. 3, and a bush A (4) has a shaft (1) inside.
Is inserted so that the lower portion of the shaft (1) is locked so that the shaft (1) does not escape. The lower part of the shaft (1) has a large-diameter part (11) at the lower end, and a medium-diameter part (10) provided with a small diameter relative to the large-diameter part (11) and above the large-diameter part (11). It is composed of
(13) in the figure shows an engagement groove with which a stopper of the operation section (70) is engaged.

The bush A (4) is formed in a quadrangular section so that the outer peripheral surface of the cylindrical main body (40) fits into the relay pipe (2), and the shaft (1) shown in FIG. A) A slightly smaller-diameter circular through hole (43) is formed in the outer diameter (L ₃ ) of the middle diameter portion (10).

An engaging hole (41) having a large diameter with respect to the inner diameter (L ₁ ) of the through hole (43) is formed continuously below the through hole (43). ) Having a slightly smaller outer diameter (L ₄ ) than the inner diameter (L ₂ )
The large diameter portion (11) of the bush A (4) is
It is configured to lock in 1). Therefore, the inner diameter (L ₁ ) of the through hole (43) of the bush A (4) is formed smaller than the outer diameter of the large diameter portion (11) of the shaft (1).

The upper end of the bush A (4) has a flange (4) which is engaged with the opening edge of the relay pipe (2).
2) is integrally formed, and an engagement hole (2) of the relay pipe (2) is formed on the outer peripheral surface below the flange (42).
The bushing A (4) is fixed to the upper end portion of the relay pipe (2) by the flange (42) and the locking projection (44) because the locking projection (44) to be inserted into the projection 4 is protruded. You.

The upper end of the shaft (1) and the mounting portion provided on the table (7) are connected by a pin (15). In the figure, (75) indicates an insertion hole for the pin (15).

As shown in FIG. 6, the engaging portion (1) formed of a convex portion having a substantially circular cross section from the lower end surface of the shaft (1).
2) is protruded, and a washer (50) with which the outer periphery of the engaging portion (12) is engaged, and a bush B (5A) made of resin are each formed on a shaft (1) by a screw (17) with a washer (16). ) Is fastened to the engaging portion (12). The outer diameter of the bush B (5A) is substantially the same as or slightly smaller than the inner diameter of the relay pipe (2), and is slidably contacted with the relay pipe (2). In addition, bush B (5),
The washer (50) is formed as shown in FIGS. In the figure, (5A) and (50A) are through holes having the same shape as the outer diameter of the engaging portion (12), and the engaging portion (12) fits into the through holes (5A) and (50A).

Therefore, the bush B (5) of the engaging portion (12)
A) Since the rotation of the circular shaft (1) is restricted by fitting to the washer (50), the table board (7) does not move in the front-rear direction in use.

The above bush A (4) and bush B
(5) is attached to the intermediate pipe (2) and the shaft (1) as shown in FIGS. Therefore, the lower portion of the shaft (1) is in the bush A (4) and the bush B (5) when the table board (7) is in use, and
Since the bush A (4) and the bush B (5) are supported by the relay pipe (2), there is no backlash.

The above-mentioned relay pipe (2) is formed in the shape of a rectangular tube, and elastically projecting projections (64A) of the bush C (6) mounted in the fixed pipe (3) are formed on the four circumferential surfaces in the axial direction. An engaging groove (20) is provided. Further, a locking hole (25) is opened at the lower end, and the projection (65) of the bush C (6) is engaged with the locking hole (25). As shown in (2)
Is configured not to escape from the bush C (6). (65A) in the figure shows a slit forming the projection (65).

The connecting pipe (2) is vertically slidably inserted into the bush (6), and the bush C (6) shown in the figure is formed by bisecting a resin square tube in the axial direction. It consists of a main body (6A) (6B) having a U-shaped cross section, and convex portions (63A) (63A) elastically contacting the outer surface of the relay pipe (2) inside the upper end portion, and vertically below it. Long elastic contact projections (64A) (64A) are formed,
Each of the elastic contact projections (64A) is in sliding contact with the concave groove (20) of the relay pipe (2) as shown in FIG.

The bush C (6) has a locking projection (61) (61) provided on the outer surface of the lower end thereof inserted and locked into a locking hole (31) provided at the lower end of the fixed pipe (3). , Is fixed to the fixed pipe (3).

A sliding piece (62) is provided below the relay pipe (2) in the bush C (6), and the sliding piece (62) and the bottom plate (3) of the fixed pipe (3) are provided.
2), a compression spring (21) is internally provided.

Therefore, in the use state of the table board (7) shown in FIG.
(6) are supported in two vertical stages by the projections (63A) and the projections (64A), so that they can be mounted without rattling.

Then, the intermediate pipe (2) is connected to the bush C.
As shown in FIG. 14, the projection (65) of the bush C (6) is in sliding contact with the concave groove (20) of the relay pipe (2) as shown in FIG. No rattling occurs in the relay pipe (2).

FIG. 15 shows a non-use state of the table board (7). The table board (7), the shaft (1), etc. are stored in the storage section (72) of the console box (71). Also in this state, the shaft (1) is
(4), the bush B (5) and the relay pipe (6) are supported by the bush C (6), and the table board (7) is supported by the inner wall surface of the storage section (72). Therefore, when the table board (7) is not used, the shafts (1)... Do not rattle, so that no noise is generated even by vibration of the vehicle.

When the operating section (70) is operated from the housed state shown in FIG. 16, the splicing pipe (2) is extended upward by the elasticity of the compression spring (21), and the shaft (1) is thereby moved together with the table (1). Part of (7) protrudes above the storage section (72), and the table board (7) is in a state where it can be easily pulled out.

[0038]

According to the present invention, since the splicing pipe in the fixed pipe and the shaft in the splicing pipe are supported by the bush, there is no backlash when the table board is used or not used. Therefore, it can be used comfortably without generating abnormal noise due to vibration of the vehicle or the like.

[Brief description of the drawings]

FIG. 1 is a perspective view of an automobile seat provided with a retractable table mechanism according to the present invention.

FIG. 2 is a perspective view of a console box provided with a retractable table mechanism according to the present invention.

FIG. 3 is a perspective view of the present invention.

FIG. 4 is an exploded perspective view.

FIG. 5 is a sectional view taken along line VV of FIG. 4;

FIG. 6 is a sectional view taken along line VI-VI of FIG. 4;

FIG. 7 is a sectional view taken along line VII-VII of FIG. 4;

8 is a sectional view taken along line VIII-VIII in FIG. 7;

FIG. 9 is a sectional view showing a use state of the table board.

FIG. 10 is an enlarged view of a portion A in FIG. 9;

FIG. 11 is a sectional view taken along line XI-XI in FIG. 10;

FIG. 12 is an enlarged view of a portion B in FIG. 9;

FIG. 13 is a sectional view taken along line ii of FIG. 12;

FIG. 14 is a partial cross-sectional view when the relay pipe moves up and down.

FIG. 15 is a sectional view showing a stored state of the table board.

[Explanation of symbols]

 Reference Signs List 1 shaft 2 relay pipe 3 fixed pipe 4 bush A 5 bush B 6 bush C 7 table board

Claims (5)

[Claims] 1. A shaft having a circular cross section for connecting a table board to an upper end thereof so as to be capable of being turned upside down, a relay pipe having a square cross section for slidably inserting the shaft into the inside, and allowing the relay pipe to be protruded and retracted in the axial direction. It consists of a fixed pipe which is inserted and fixed upright on a frame for fixing the console box or the armrest, and the backlash is absorbed between the outer surface of the shaft and the inner surface of the relay pipe, and between the outer surface of the relay pipe and the inner surface of the fixed pipe. Retractable table mechanism with an intervening bush. 2. The bush interposed between the outer surface of the shaft and the inner surface of the relay pipe is a bush A fixed to an upper end of the relay pipe and having an inner diameter substantially equal to an outer diameter of a lower end of the shaft. The lower portion of the shaft is formed of a large diameter portion at a lower end portion and a medium diameter portion provided with a smaller diameter than the large diameter portion and provided above the large diameter portion.
The retractable table mechanism as described. 3. An engagement portion having a substantially circular cross section with a smaller diameter than the large diameter portion is provided below the large diameter portion of the shaft, and the outer periphery of the engagement portion is engaged with the engagement portion. 3. The retractable table mechanism according to claim 2, wherein a washer to be mounted and a bush B slidingly contacting the inner surface of the relay pipe and attached to the lower end of the shaft. 4. A bush C provided between an outer surface of the relay pipe and an inner surface of the fixed pipe has a length substantially equal to the entire length of the fixed pipe and is hooked on the fixed pipe;
The retractable table mechanism according to claim 1, wherein an elastic contact projection protruding in a direction of the relay pipe is provided on an outer surface. 5. The retractable table mechanism according to claim 4, wherein a concave groove is provided in an outer surface of the intermediate pipe in an axial direction so that an elastic contact protrusion of the bush C is engaged.