KR101676252B1

KR101676252B1 - Seat-back table

Info

Publication number: KR101676252B1
Application number: KR1020150130148A
Authority: KR
Inventors: 김병곤
Original assignee: 현대자동차주식회사
Priority date: 2015-09-15
Filing date: 2015-09-15
Publication date: 2016-11-16

Abstract

The present invention provides a seat back table rotatably mounted on a rear surface of a seat frame, comprising: a table main body having a first support portion and a second support portion formed on both sides thereof; A screw bar having a cylindrical shape, a screw groove formed on an outer circumferential surface thereof and disposed on one side of the seat frame; A fixed joint coupled to the other lower end of the seat frame; And a rotation bearing disposed on the other side of the seat frame above the fixed joint and rotated together with the rotation position of the fixed joint and having a fitting groove formed on one side thereof, and a fastening hole through which the screw bar is inserted is inserted into the first supporting portion The table main body is moved in the lateral direction so that the projections formed on the second support portion enter the fitting groove when the table main body is rotated from the tilted position to the deployed position, The rotational bearing is rotated according to the folding angle, and the development angle of the table main body is maintained constant at the extended position.
2, the opening angle of the table main body can be maintained to be constant in a horizontal direction regardless of the folding angle of the seat back, so that the falling of the articles can be prevented and the convenience for passengers can be improved .

Description

{Seat-back table}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a seat back table mounted on a rear seat of a vehicle (rear seat passenger) to hold a small article, and more particularly, To the seat back table.

In the vehicle interior, various storage or supporting devices are provided to provide convenience to passengers. Among the various devices, the seat back table is a convenience device that is rotatably mounted on the rear seat (seat back) of the front seat so that a passenger seated in the rear seat can put various small articles.

As shown in FIG. 1, the seat has a structure in which the seatback 1 is mounted so as to vertically support the back of the seat cushion 2 on which a passenger sits, so that a passenger sitting on the seatback can put a small article The seat back table 3 is mounted. The seat back table 3 is configured so that it can be bent or unfolded (deployed) as necessary (close to the seat back).

On the other hand, the seat back table 3 is installed not only on a bus provided with many seats, but also on a large-sized truck or the like. The conventional seat back table is mounted for convenience of rear seat passengers, but has a folding structure that can be simply turned by a hinge, so that the seat back is inclined according to the folding angle of the front seat, and the articles placed on the seat back can be dropped.

In particular, as shown, in the case of a truck, the foldable angle is set much larger than the passenger seat of the bus (the bus can fold 20 degrees from vertical to rear, while the truck is foldable forward 26 degrees, 66 degrees), and the possibility that the objects placed on the table body 3 fall down is further increased when the front seatback is folded.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a seat back table capable of maintaining a constant opening angle of a table body when it is developed regardless of a folding angle of the seat back, .

In order to achieve the above object, according to the present invention, there is provided a seat back table rotatably mounted on a rear surface of a seat frame constituting a skeleton of a seat back, comprising: a table main body having a first support portion and a second support portion formed on both sides; A screw bar having a cylindrical shape, a screw groove formed on an outer circumferential surface thereof and disposed on one side of the seat frame; A fixed joint coupled to the other lower end of the seat frame; And a rotation bearing disposed on the other side of the seat frame above the fixed joint and rotated together with the rotation position of the fixed joint and having a fitting groove formed on one side thereof, and a fastening hole through which the screw bar is inserted is inserted into the first supporting portion The table main body is moved in the lateral direction so that the projections formed on the second support portion enter the fitting groove when the table main body is rotated from the tilted position to the deployed position, The rotation bearing is rotated according to the folding angle so that the expansion angle of the table main body is kept constant at the extended position.

The rotating bearing and the fixed joint are connected by a chain, and the magnet is attached to either the projection or the fitting groove so that the second supporting portion is fixed by the magnetic force when the second supporting portion comes close to the rotating bearing.

In addition, the seat frame can be folded up to 30 ° toward the front and folded backward to 70 °, and when the table body is in the extended position, the table body can be kept horizontal within the folding range of the seat frame .

2, the opening angle of the table main body can be maintained to be constant in a horizontal direction regardless of the folding angle of the seat back, so that the falling of the articles can be prevented and the convenience for passengers can be improved .

The rotation bearing and the second supporting portion are coupled by a coupling between the fitting groove and the protrusion, and the magnet is installed in any one of the positions to prevent the protrusion from being detached from the fitting groove.

FIG. 1 is a view showing a state where a development angle of a table varies according to folding angles of a seat back in a conventional structure,
FIG. 2 is a view illustrating a state in which a development angle of a table body is uniformly leveled regardless of a folding angle of a seat frame in a structure according to a preferred embodiment of the present invention;
3 is an enlarged view of a portion where a first support portion is mounted and a portion where a second support portion is mounted in a preferred embodiment of the present invention,
4 is an enlarged view of a portion where a fixed joint is mounted in a preferred embodiment of the present invention,
5 is a view showing a disassembled portion in which a rotary bearing is mounted in a preferred embodiment of the present invention,
FIG. 6A is a view showing a protrusion formed on a second support portion in a preferred embodiment of the present invention, FIG.
FIG. 6B is a view showing a state in which a fitting groove into which a projection enters into a rotary bearing is formed in a preferred embodiment of the present invention,
FIG. 7A is a view showing that the first supporting portion moves in the lateral direction when the first supporting portion rotates,
7B is a view showing a state in which a protruding portion inserted into a screw groove formed on the outer circumferential surface of the screw bar and moving along the screw groove is formed on the inner circumferential surface of the fastening hole,
8 is a view showing a state of the first supporting part and the second supporting part when the table body is in a folded state,
9 is a view showing the states of the first support portion and the second support portion when the table main body is in a deployed state;

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings in order that the present invention can be easily carried out by those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.

In addition, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary meanings, and the inventor should properly define the concept of the term to describe its invention in the best way. It should be construed as meaning and concept consistent with the technical idea of the present invention.

3, the seat back table according to the present invention is characterized in that the table body 20 is mounted on a seat frame 10 (constituting the frame of the seat back) and includes a table body 20, a screw bar 30, , And a rotary bearing (50).

The table body 20 is formed in a plate shape with a predetermined size and has a structure in which the first support portion 21 and the second support portion 23 are extended on both sides.

A screw bar 30 is mounted on one side of the seat frame 10 so as to protrude rightward from the left side of the seat frame in Fig. 3, and on the other side of the seat frame 10 The fixed joint 40 and the rotary bearing 50 are mounted.

The screw bar 30 has a cylindrical shape and a helical screw groove is formed on the outer circumferential surface of the screw bar 30. The first support portion 21 has a fastening hole 25 having a protruding portion 26 formed on an inner circumferential surface thereof as shown in FIG. It is. The screw bar 30 is inserted into the fastening hole 25 so that the protruding portion 26 is inserted into the screw groove and the first support portion 21 is inserted into the fastening hole 25 as shown in FIG. Side direction.

On the other hand, on the other side of the seat frame 10, a fixed joint 40 and a rotary bearing 50 are mounted. The fixed joint 40 has a circular gear shape as shown in more detail in Fig. 4, and is mounted to be interlocked with the rotation axis (rotation axis) in the lower end of the seat frame 10, depending on the folding angle of the seat frame 10 (I.e., not rotated separately in the seat frame, but is fixed to the seat frame and rotates equally by the angle at which the seat frame is folded like the seat frame).

A rotation bearing 50 connected to the fixing joint 40 and the chain 41 is rotatably mounted on the seat frame 10 at a position where the second support portion 22 is mounted above the fixed joint 40 do. The rotation bearing 50 is engaged with the cover 60, the bolt, which prevents the second support 22 and the second support 22 from separating from each other, as shown in Fig.

As shown in FIG. 6B, the rotation bearing 50 is formed with a fitting groove 51 on a surface thereof which is in contact with the second support portion 22. As shown in FIG. The fitting grooves 51 are arc-shaped, and at least two or more of the fitting grooves 51 are spaced apart from each other. When the second supporting portions 22 are close to each other, a metal, which can be attached to the magnets or magnets, Or embedded.

The second support portion 22 is formed with a hole 23 for inserting the bolt and the cover 60 and a protrusion 24 at a position where the insertion hole 51 can be inserted into the hole 23, Respectively. The magnet or the metal that can be attached to the magnet is additionally attached or embedded in the protrusion 24 so that a magnetic force acts when the second support portion 22 and the rotary bearing 50 are close to each other.

Accordingly, when the table main body 20 as described above is in the tilted state (in a state in which the upper surface thereof is brought close to the seat frame), the first supporting portion 21 is relatively moved to the right And the second supporting portion 22 is in a state in which the projection 24 is disengaged from the fitting groove 51. [ In this state, since the rotational force transmitted from the fixed joint 40 is not transmitted to the table body 20, the table body 20 remains in a tilted state.

When the table main body 20 rotates according to the user's needs and is in an unfolded state as shown in Fig. 9, when the first supporting portion 21 rotates, the projecting portion 26 moves along the screw groove of the screw bar 30 The first support portion 21 moves to the left side (with reference to Figs. 8 and 9).

The second support portion 22 is also moved to the left side, and the protrusion 24 is inserted into the fitting groove 51. The projection 24 that enters the fitting groove 51 is fixed by the magnetic force and the rotational force of the rotary bearing 50 is transmitted to the second support portion 22. [

2, the rotational force is transmitted to the table body 20 via the fixed joint 40, the chain 41, the rotary bearing 50, and the second support portion 22, So that the table main body 20 can always maintain the horizontal position.

In the present invention, only when the table body 20 is rotated from the tilted position to the deployed position, a rotational force is transmitted to the second support portion 22 to maintain a constant deployment angle (preferably a horizontal angle) (10) is foldable up to 30 ° toward the front and foldable up to 70 ° toward the rear.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Will be apparent to those of ordinary skill in the art.

10: Sheet frame
20: The main table
21: first support portion
22: second support portion
24: projection
25: fastening hole
26:
30: Screw bar
40: Fixed joint
41: Chain
50: rotating bearing

Claims

A seat back table rotatably mounted on a rear surface of a seat frame,
A table main body having a first support portion and a second support portion formed on both sides;
A screw bar having a cylindrical shape, a screw groove formed on an outer circumferential surface thereof and disposed on one side of the seat frame;
A fixed joint coupled to the other lower end of the seat frame;
And a rotation bearing disposed on the other side of the seat frame above the fixed joint and rotated in conjunction with the rotation position of the fixed joint and having a fitting groove formed on one side thereof,
The first support portion is formed with a fastening hole into which a screw bar is inserted and a protrusion that is fitted in the screw groove is formed in the inner circumferential surface of the fastening hole. When the table main body is rotated from the tilted position to the deployed position, Wherein the table main body is moved in a lateral direction so as to enter the seat frame and the rotation bearing is rotated according to the folding angle of the seat frame to maintain the deployment angle of the table main body constant at the unfolding position.

The seat back table according to claim 1, wherein the rotating bearing and the fixed joint are connected by a chain.

The seat back table according to claim 2, wherein the magnet is attached to either the projection or the fitting groove so that the second supporting portion is fixed by the magnetic force when the second supporting portion comes close to the rotation bearing.

The folding table according to any one of claims 1 to 3, wherein the seat frame is foldable up to 30 [deg.] Forward and foldable up to 70 [deg.] Toward the rear, and when the table body is in the extended position, And maintains the horizontal position within the folding range of the seat frame.