JP2002036930A - Table for car seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a table for a car seat whose body is not damaged even if additionally upward loaded in its used position. SOLUTION: In this table for the car seat, a table body 1 is installed so as to vertically be rotatable against an angel-controlled seat back 9 of a seat 7 via a hinge section 6, as well as being switched and retained between a stowed position rotated downward by a shaft 3 rotation-maintainably supported via a bracket 4 and a used position to be nearly horizontal after being rotated upward from the stowed position. The table body 1 is located on a bottom face 12, bearing a load for rotating more upward beyond the used position with a guide groove 20 guiding the movement of a tip 31 on the shaft 3, and having an damage-preventive means 15 for allowing the shaft 3 to escape from a corresponding section of the guide groove 20 and rotate upward when the load exceeds its prescribed value.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a table for a seat, and more particularly to a table suitable for a case where a plurality of seats are arranged in front and back and a seat back whose angle can be adjusted. Things.

[0002]

2. Description of the Related Art In a vehicle interior design of an automobile or the like, as shown in FIG. 2 to which the present invention is applied, a table is attached to a seat back (back portion) of a seat, so that the rear seat occupant can easily use the table. Like that. This table is
Various things having additional functions such as cup holders are employed. Structurally, for example, the table body is attached to the seat back via a hinge so as to be vertically rotatable, and is pivoted downward by a rigid shaft which is supported so as to be able to hold and rotate via a mounting bracket. The storage position and the use position where the storage position is rotated upward from the storage position and becomes substantially horizontal. As an example of this structure, Japanese Patent Application No.
0-62768.

[0003]

By the way, in a seat in a vehicle interior, a seat back is usually provided with a seat cushion (seat portion).
The angle is adjusted by a reclining mechanism. Further, in a mode in which a plurality of seats are arranged in the front-rear direction, a rear seat occupant uses a table provided in a front seat back as shown in FIG. Accordingly, in FIG. 2A, the front seat occupant may tilt the seat back greatly backward when, for example, the rear occupant does not keep the table in the use position. In that case, FIG.
At the same time as the seatback falls backward, the table at the use position hits the rear seat cushion or the like and is damaged. This is because the conventional table body has a structure in which the table main body can only be switched between the storage position and the use position, and lacks a configuration effective for such a situation.

[0004] It is an object of the present invention to improve reliability by reliably eliminating damage to the table body without sacrificing weight and ease of use even when the above situation occurs. It is an object of the present invention to provide a seating table capable of simultaneously improving the operability of switching the storage position between rotations and the stability at each position.

[0005]

In order to achieve the above object, the present invention relates to a seat back 9 in which a table body 1 is adjusted in angle of a seat 7 as shown in FIGS.
A storage position which is attached to be rotatable up and down via the hinge portion 6 and is rotated downward by the rigid shaft 3 which is rotatably supported via the mounting bracket 4 and upward from the storage position. In the seating table which is switched and held at a substantially horizontal use position, the table main body 1 is provided on the lower surface, and together with a guide groove 20 for guiding the movement of the tip of the shaft 3, further from the use position. A break prevention means 15 is provided which receives a load which is to be turned upward, and when the load exceeds a set value, allows the shaft 3 to escape from a corresponding portion of the guide groove 20 and allow the shaft 3 to be turned upward. Is what you are doing.

In the above-described seating table, the table body 1 is held at the use position via the shaft 3 and the bracket 4. In this use position, the table body 1 normally holds a load of an article or the like placed thereon via the shaft 3 and the bracket 4, but for example, as shown in FIG. It may receive an upward load. In this case, when the load becomes larger than the set value as shown in the ellipse of FIG.
Since it is released from zero and the upward movement corresponding to the load is allowed, it is possible to prevent the table from being damaged as in the related art. The set value here is, for example, larger than a normal load received when the table body 1 is rotated to the use position (the damage prevention means 15 is not operated by the rotation operation to the normal use position), and The value is smaller than the load recognized that the table is likely to be damaged when further rotated upward from the use position.

The present invention is more preferably embodied as follows. First, the breakage preventing means 15 is provided in the guide groove 20 so as to receive the tip 31 of the shaft 3 from the guide groove 20 via the regulating protrusion 16.
7 The restriction protrusion 16 can be easily provided by a convex shape or the like provided in the guide groove 20, and the relief portion 17 can be easily provided by a groove or the like similar to the guide groove 20. For this reason, the damage prevention means 15 is realized with a simple configuration. Second
In addition, the table body 1 has a rail portion 2 protruding from the lower surface 12 to form the guide groove 20. When the tip 31 of the shaft 3 gets over the regulating protrusion 16 from the guide groove 20, the rail This is accompanied by elastic displacement of the part 2. As a configuration for allowing the shaft 3 to escape to the escape portion 17 via the regulating protrusion 16, for example, the regulating protrusion 16 itself may be elastically oscillated or elastically displaced. In this case, wear or settling of the regulating protrusion 16 occurs. Easy to lose quality.
In this configuration, the rail portion 2 itself is elastically displaced,
It is significant that such troubles are less likely to occur. Third, the rail portion 2 is provided on the lower surface 12 of the table body 1 with a slit 21 interposed therebetween. This makes it easier to secure the elastic displacement of the rail portion 2 due to the presence of the slit 21. The slits 21 here need only be substantially parallel to the guide grooves 20, and may not be continuous as in the embodiment described later, for example, may be provided with a plurality at intervals in the front-rear direction,
You may make it provide only in the corresponding part of the regulation protrusion 16. Fourth, the guide groove 20 includes first and second elastic locking portions 26 and 27 for releasably locking the distal end 31 of the shaft 3 at the use position and the storage position of the table main body 1, respectively. It is a configuration that it has. This is because, in the use position and the storage position, the shaft 3 is
The table main body 1 is stably held at each position without rattling by being locked by the corresponding elastic locking portions 26 and 27, respectively. Fifth,
The shaft 3 is bent into a substantially U-shape, and has a shaft portion 33 with both ends of the U-shaped bent outward, while the bracket 4 is configured to rotatably assemble the shaft 3 via the shaft portion 33. And a pair of cam portions 45 for guiding the shaft 3 to the rotation restricting position while being pressed against the corresponding portion of the shaft 3. The shaft 3 makes it possible to use, for example, the urging force generated by bringing the two U-shaped pieces 32 closer to each other, and to easily secure the appearance. The bracket 4 allows the switching operation of the shaft 3 to be easily realized by the urging force of the shaft 3 and the pressing force of the cam portion 45 against the cam surface.

The above-mentioned table body 1 uses a part thereof to provide, for example, a cup receiving member together with a cup hole and a cup hole, and an electric connection portion for portable equipment such as a notebook personal computer. It is attached according to. The installation part is the back of the seat back in which the angle of the seat is adjusted, but the seat itself may be any one that is installed in a room such as an automobile, a train, or an airplane.

[0009]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a schematic diagram showing the entire operation of the table. 2A and 2B show an example of setting up a table. FIG. 2A is a schematic diagram using a front seat table among front and rear seats, and FIG. 2B is a view when a front seat back is tilted backward. It is a schematic diagram. 3 and 4 show the table in relation to FIG. 2. FIG. 3 (a) is substantially equivalent when viewed from the direction of arrow A in FIG. 2 (a), and FIG.
FIG. 4A corresponds substantially when viewed from the direction of arrow B in FIG.
4A is substantially equivalent when viewed from the direction of arrow C in FIG. 2A, and FIG. 4B is substantially equivalent when viewed from the direction of arrow D in FIG. 2) is a schematic view of each table substantially corresponding when viewed from the direction of arrow E in FIG. 5 and 6 show a table body, wherein FIG. 5 (a) is a bottom view, FIG. 5 (b) is a view showing a cross section taken along line FF of FIG. 5 (a) together with a hinge member, and FIG. 5 (c) is a view of FIG. It is a figure which shows the GG line cross section with a hinge member. FIG. 6A shows FIG.
6B is a sectional view taken along line JJ of FIG. 5A, FIG. 6C is an enlarged view of a portion K in FIG. 6A, and FIG.
FIG. 7 is an enlarged view of an L part in FIG. 7 (a) is a top view, FIG. 7 (b) is a front view thereof, FIG. 7 (c) is a sectional view taken along line MM of FIG. 7 (a), and FIG. FIG. 3 is a sectional view taken along line NN of FIG. 8 (a) is a top view, FIG. 8 (b) is a front view thereof, and FIG. 8 (c) is an enlarged sectional view taken along line OO of FIG. 8 (a). FIG. 9 is a drawing of a single shaft.

The seat table of the embodiment is mainly composed of a table body 1 having a rail portion 2 and a breakage preventing means 15, and is composed of a rigid shaft 3, a mounting bracket 4, its cover member 5, and a hinge member 6. I have. Further, this table is designed on the assumption that the seat back 9 of the seat 7 is used as an installation unit as illustrated in FIG. The seat back 9 can be adjusted in angle in the front-rear direction with respect to the seat cushion 8 via a reclining mechanism, and a table arrangement portion 9a is provided on the back side, and the table main body 1 overlaps the arrangement portion 9a. Also, a fixing portion corresponding to the bracket 4 and the hinge member 6 is secured. These are the same as before. Hereinafter, after describing the features and assembly of each member, main operations will be referred to.

(Constituent Member) The table body 1 is made of a substantially rectangular plate-shaped resin molded product, and the peripheral edge 10 has a somewhat large roundness, and the upper surface 11 is raised one step higher.
It is bordered by 0. The lower surface 12 has a peripheral edge 10
5 and the lower surface 12 as shown in FIGS.
A pair of mounting portions 13 incorporating the hinge member 6 are integrally formed with the rail portion 2 provided substantially in the middle of the left and right sides of the trailing edge.

As shown in FIG. 5, the mounting portions 13 are provided in pairs left and right apart from each other, and each of the mounting portions 13 is constituted by two ribs 14 in which the hinge member 6 can be disposed. Each rib 14 is provided with a shaft hole 14a opposed thereto. The hinge member 6 is a member for attaching the table main body 1 to the arrangement portion 9a, and can be arbitrarily changed according to the configuration of the arrangement portion 9a. In this embodiment, the shaft portions 62 are provided on both sides of the base portion 61, and each shaft portion 62 is fitted into the corresponding shaft hole 14a, so that the shaft portions 62 are relatively rotatably mounted between the ribs 14. The hinge member 6 has a pin 63 and a mounting hole 64. The hinge member 6 is positioned and arranged with respect to the arrangement portion 9 a via the pin 63, and is fixed by a fixing member 65 such as a screw inserted into the mounting hole 64.

As shown in FIG. 6, the rail 2 protrudes from the lower surface 12 through a slit 21 and extends from slightly before the front edge of the lower surface 12 to a substantially intermediate position in the front and rear direction. ing. The damage prevention means 15 comprises a regulating projection 16 and a relief portion 17. That is, this rail portion 2
Are connected and supported to the lower surface 12 by standing walls 22 and 23 provided before and after the slit 21, and form a guide groove 20 and a relief portion 17 along the longitudinal direction of the rail thickness. For this reason, the contour of the rail portion 2 is
The upper piece 24 located on the side and the lower piece 25 located on the outside
And the front and rear standing walls 22 and 23. The height of the slit 21 is designed to be smaller than that of the guide groove 20.

The guide groove 20 is fitted with the distal end 31 of the shaft 3 so as to guide the movement of the distal end 31 when the table body 1 is rotated between the storage position and the use position. Become. The groove has a first elastic locking portion 26 for locking the table main body 1 at the use position and a second elastic locking portion 27 for locking at the storage position. Both elastic locking portions 26,
Numeral 27 is for locking the distal end 31 of the shaft 3 so as to be freely detachable, so as to prevent inadvertent rattling between the shaft 3 and the shaft 3. In this embodiment, the first elastic locking portion 26 is formed of a protrusion that is provided in front of the regulating protrusion 16 and protrudes from the inner surface of the upper piece 24 as shown in FIG.
The tip 31 is restrained and locked between the regulation protrusion 16 and the protrusion. FIG. 6C shows the second elastic locking portion 27.
And a relatively long rib protruding from the inner surface of the lower piece portion 25 as shown in FIG.
In these elastic locking actions, due to the presence of the slit 21,
There is an advantage that the upper and lower pieces 24 and 25 are elastically displaced, and wear of the projections of the elastic locking portions 26 and the ribs of the elastic locking portions 27 can be effectively prevented.

The restricting projection 16 projects from the inner surface of the lower piece 25 facing the projection that is the first elastic locking portion 26.
In terms of shape, it projects in a substantially inverted L shape, the horizontal portion at the tip projects into the escape portion 17, and a predetermined gap is secured between the upper piece portion 24. This gap receives a load that causes the table body 1 to rotate further upward from the use position, and when the load reaches a certain design value, the tip 31 of the shaft 3 is accompanied by elastic displacement of the lower piece 25. Is set to a size that can escape from the guide groove 20 to the escape portion 17 side through the tip of the regulating protrusion 16. That is, the damage prevention means 15 of the embodiment has a configuration in which the restricting projection 16 allows the distal end 31 to escape from the guide groove 20 to the escape portion 17 side by the elastic displacement of the lower piece 25 or the elastic displacement of the upper and lower pieces 24, 25. is there. However, such damage prevention means 15 is, for example,
The regulating projection 16 is formed as an elastic projection, and the distal end 31 is made to escape from the guide groove 20 by using the elastic displacement of the elastic projection.
It is also possible to make it escape to. However, in that case, the elastic projections are easily worn or deteriorated. In addition, the escape portion 17 is formed in a groove shape as an extension of the guide groove 20, but may be any shape such as a recess into which the tip end 31 falls.

The shaft 3 is a round metal wire satisfying a predetermined rigidity.
An intermediate piece connecting the two pieces 32 is used as the tip 31. The length is a dimension that slightly protrudes from the first elastic locking portion 26 from the rear edge of the table main body 1 in a state where the table main body 1 is disposed at the use position as shown in FIG. The diameter is a dimension that can move the guide groove 20 and the escape portion 17. The two piece portions 32 are provided so as to gradually increase the interval toward the end portions, and each end portion is a shaft portion 33 that is bent outward.

Each of the bracket 4 and the cover member 5 is a resin molded body. As shown in FIG. 7, the bracket 4 has the flange portions 41 on both sides integrated with each other via upper and lower connecting portions 42, 43 and the like, and an opening 44 is formed between the upper and lower connecting portions 42, 43. A pair of cam parts 45 on both upper sides
have. The flange portion 41 is provided with a hole 46 penetrating in the thickness direction and a concave portion 47 having a partially concave lower surface side. Shaft hole (hole half body) 49 is provided. The cover member 5 of FIG. 8 is disposed in the recess 47. The shaft hole 49 is a shaft hole (half hole) 52 of the cover member 5.
The shaft part 33 is pivotally supported by and. The interval between the standing walls 48 is smaller than the dimension between the end sides of the two pieces 32. Further, the upper connecting portion 42 is formed lower by cutting out the middle portion, and the lower connecting portion 43 has a horizontal plate shape. The upper connecting portion 42 has a lower portion 4 as shown in FIG.
2a has an inclined cam shape, and when the shaft 3 receives a certain load (that is, a shaft tip 31 described later).
7c), the corresponding piece of the shaft 3 is bent inward as shown in FIG. 7 (c) so as to be able to move downward from above the portion 42a. The cam 45 is shown in FIG.
In the state of (d), it protrudes in an arc shape centering on the shaft hole 49, and the upper end of the arc is a one-piece portion 3 between the corresponding portion of the upper connecting portion 42.
2 is restricted (hereinafter, referred to as restricted rotation in the use position of the table main body 1), and the lower end of the circular arc is restricted from rotating with the corresponding portion of the lower connecting part 43 (hereinafter, referred to as table restricted main body 1). (Referred to as rotation control in the storage position). That is, the two piece portions 32 of the shaft 3 are slid while being in pressure contact with the cam surface of the corresponding cam portion 45, and are held by the rotation of the table body 1 at the use position and the storage position, respectively. The above cover member 5 may be formed integrally with the bracket 4 and may be omitted.

The above-described table body 1, bracket 4 and shaft 3 can be assembled in the following procedure. The bracket 4 is attached to the seat back 9 by inserting a stopper 55 such as a screw through the hole 46 and the through-hole 51 and fixing the bracket 4 to the arrangement portion 9a from the state where the cover member 5 is assembled.
Assembled. At the same time, the table body 1 is assembled to the arrangement portion 9a via the hinge member 6 as described above. After that, the shaft 3 is connected to the guide groove 2
0, the tip 31 is positioned in the guide groove 22, and then the distance between the two pieces 32 is reduced. From that state, the two shafts 33 are inserted into the corresponding pivot holes formed by the corresponding shaft holes 49 and 52. .
Then, the table main body 1 is rotated and switched via the shaft 3 which is rotatably held by the bracket 4, and is held at each of the rotational positions. This rotation range corresponds to 2 in FIG.
Range of position. The holding force is such that the shaft 3 is
Is proportional to the spring pressure generated when the distance is reduced and the pressure contact force generated between the spring portion and the cam portion 45.

(Main operation) The above table is used for the seat 7 in FIG.
This will be described using an example incorporated in the application. When using the table, the rear seat 7 is rotated via the hinge 6 so as to lift the table body 1 from the storage position as shown in FIG. Then, the table body 1 is rotated from the storage position of FIG. 1 to the use position with the movement along the guide groove 20 of the shaft 3, and is held at the use position via the shaft 3 and the bracket 4. That is, in this process, the shaft 3 is moved relative to the bracket 4 as shown in FIG.
Is rotated from the lower position to the upper position while pressing the cam portion 45 against it. The distal end 31 of the shaft 3 is released from the elastic locking state by the second elastic locking portion 27 by the rotating operation force at the storage position shown in FIG. The dynamic operation force moves over the protrusion of the first elastic locking portion 26 and is locked between the protrusion and the regulating protrusion 16. This corresponds to the use position in FIG. In this use position, the table body 1 receives a load of an article or the like placed thereon by the holding force between the shaft 3 and the bracket 4 described above. The table main body 1 is switched from the use position to the storage position by a rotation operation reverse to the above.

From the above use position, the occupant of the front seat 7 does not know that the table body 1 of the rear seat 7 is in the use position as shown in FIG. Assume that In that case, the table body 1 in the use position
Is subjected to an excessive upward load on the seat cushion 8 (the same applies to luggage and the like on the seat cushion 8). And
When the load reaches or exceeds the set value, the tip 31 of the shaft 3
The escape portion 17 is guided from the guide groove 20 through the regulating protrusion 16.
And the table body 1 is allowed to move further upward. That is, in this process, as shown schematically in FIGS. 1 and 6 (d), first, when the table body 1 receives an excessive upward load, the tip 31 moves the regulating projection 16 to the position shown in FIG. 6 (d).
Of the lower piece 25 (the upper piece 24
May be slightly elastically deformed).
Due to this elastic deformation, the distal end 3 is moved from the enlarged gap between the distal end of the regulating projection 16 and the upper piece 24 to the escape portion 17 (the position in each drawing) as shown in the position in each drawing. As a result, it is possible to prevent a situation in which the table is damaged as in the related art. For example, the table body 1 pushes the vicinity of the tip 31 of the shaft 3 and forcibly deforms the lower piece 25 to the position shown in each figure with a force corresponding to the excessive load force, and moves the tip 31 to the position shown in each figure. By returning to, normal use can be performed again.

The present invention is embodied as in the above-described basic form. However, except for the technical elements described in claim 1, details are modified, and additional functions such as a cup holder are appropriately provided. Is added to

[0022]

As described above, in the seating table according to the present invention, in addition to the fact that the rotation of the table main body is favorably switched along the guide groove, an embodiment as shown in FIG. Even so, since the damage prevention means functions, it is possible to surely eliminate the possibility of damaging the table body as in the related art. Further, the breakage preventing means can be easily realized without sacrificing weight reduction or usability. For this reason, the present invention can improve the quality and reliability over the conventional table.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing an overall operation of a seat table according to an embodiment.

FIG. 2 is an installation example of the table of the present invention, and is a conceptual diagram showing a use position and a storage position of a table main body and an operation of the present invention.

FIG. 3 is a state diagram viewed from the directions of arrows A and B in FIG. 2;

FIG. 4 is a state diagram viewed from directions indicated by arrows C, D, and E in FIG. 2;

FIG. 5 is a bottom view and a partial cross-sectional view of the table body.

FIG. 6 is a sectional view and an enlarged view of a main part of the table main body.

FIG. 7 is a view showing the bracket of FIG. 1;

FIG. 8 is a view showing a cover member for the bracket.

FIG. 9 is a view showing the shaft of FIG. 1;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Table main body (11 is an upper surface, 12 is a lower surface, 13 is a mounting part) 3 ... Shaft (31 is a front-end | tip, 32 is both parts, 33 is a shaft part) 2 ... Rail part (20 is a guide groove, 21 is a slit) , 2
6 and 27 are elastic locking parts 4 bracket (41 is a mounting part, 45 is a cam part, 49 is a shaft hole) 5 ... cover member (52 is a shaft hole) 6 ... hinge member (hinge part) 7 ... seat ( 8 is a seat cushion, 9 is a seat back,
9a is an arrangement portion) 15 ... means for preventing damage (16 is a regulating protrusion, 17 is a relief portion)

Claims (6)

[Claims] 1. A table body is attached to a seat back whose angle of a seat is adjusted so as to be vertically rotatable via a hinge portion, and is downwardly supported by a rigid shaft which is rotatably supported via a mounting bracket. The table body is provided on the lower surface, and the table main body is provided on the lower surface, and is provided at the tip of the shaft. Along with the guide groove for guiding the movement, a load is received to rotate further upward from the use position, and when the load exceeds a set value, the shaft is released from the corresponding portion of the guide groove to move upward. What is claimed is: 1. A table for a seat, comprising: a breakage preventing means allowing rotation. 2. The seating table according to claim 1, wherein said breakage preventing means comprises an escape portion connected to said guide groove and receiving a tip of said shaft from said guide groove via a regulating projection. 3. The table body has a rail portion projecting from a lower surface to form the guide groove, and when the tip of the shaft passes over the regulating protrusion from the guide groove, the rail portion elastically displaces. The seating table according to claim 2, which is accompanied by: 4. The seating table according to claim 1, wherein the rail portion is provided with a slit provided on a lower surface of the table main body. 5. The guide groove has first and second elastic locking portions for releasably locking the distal end of the shaft at a use position and a storage position of the table main body, respectively. The seating table according to any one of 1 to 4. 6. The shaft is bent into a substantially U-shape,
While having both ends of the U-shaped bent outward,
The bracket assembles the shaft rotatably,
The seating table according to any one of claims 1 to 5, further comprising a pair of cam portions that guide the shaft to the rotation restricting position while being pressed against a corresponding portion of the shaft.