Seat writing board

Abstract

The utility model discloses a seat writing board, an armrest frame, a connecting seat, a connecting piece, a writing board and an armrest pad; the connecting seat is arranged on the armrest frame; one end of the connecting piece is rotatably connected to the connecting seat, and the other end is rotatably connected to the writing board; the armrest pad is arranged on the connecting seat. By installing the writing board on the connecting piece and then docking the connecting piece with the connecting seat, the writing board can realize rotation in two axial directions, and the writing board can be stored inside through the side slot of the armrest frame or unfolded from the side for use. The connection structure of the writing board of the utility model is stable and reliable, which greatly improves the service life of the writing board. In addition, the connecting piece and the connecting seat are small in size, which reduces the encroachment on the internal space of the armrest frame, is conducive to the volume control of the armrest frame, greatly reduces the floor space occupied by the seat, can arrange more seats, and improves the space utilization rate.

Description

Technical Field

[0001] The utility model relates to the technical field of seats, and more specifically, particularly to a seat writing board. Background Art

[0002] At present, the existing seats with writing boards have poor structural stability when the foldable writing boards are turned over for use, and the connection of the rotating shaft is easily damaged, resulting in a short service life of the writing boards. Utility Model Content

[0003] The utility model provides a seat writing board to solve the problems raised in the above background technology. To achieve the above purpose, the utility model provides the following technical solutions: a seat writing board, including an armrest frame, a connecting seat, a connecting piece, a writing board and an armrest pad; the armrest frame is provided with a receiving cavity for accommodating the writing board inside, and a slot for the writing board to enter and exit is provided on the front; the connecting seat is arranged on the armrest frame; one end of the connecting piece is rotatably connected to the connecting seat, and the other end is rotatably connected to the writing board; the armrest pad is arranged on the connecting seat;

[0004] A U-shaped groove is provided on one side of the connecting member, and a limit seat is provided on the other side; the writing board is inserted into the U-shaped groove and is rotatably connected to the U-shaped groove through a rotating part; a rotating shaft and a pair of limit blocks are provided on the limit seat; the pair of limit blocks are symmetrically arranged on both sides of the rotating shaft, and the rotating shaft is rotatably connected to the connecting seat;

[0005] The connecting seat is provided with a connecting groove, and a rotating groove is provided at the center of the connecting groove; a pair of limiting fan blocks are provided in the connecting groove, and the pair of limiting fan blocks and the pair of limiting blocks are arranged in cooperation with each other; the rotating shaft is inserted into the rotating groove, and a connecting part is provided at its end, and is connected to the connecting seat through the connecting part;

[0006] The rotating part includes a top cover, a countersunk bolt, an upper washer, a lower washer and a bottom cover; a slot is provided at the bottom of the top cover and a clamping column is provided on the side; the bottom cover includes a hexagonal seat, a column is provided on the hexagonal seat, and an internal threaded hole is provided in the center of the column; the upper washer and the lower washer are respectively installed on the top surface and the bottom surface of the writing board; the column passes through the lower washer, the writing board and the upper washer, and is inserted into the slot; the countersunk bolt passes through the top cover and is threadedly connected to the internal threaded hole; a positioning groove is provided on one side wall of the U-shaped groove to match the clamping column, and a hexagonal groove is provided on the other side wall to match the hexagonal seat.

[0007] Preferably, the connecting portion includes a connecting cap and two countersunk bolts, an annular groove is provided on the side surface of the connecting cap facing the rotating shaft, a hexagonal seat is provided in the center of the annular groove, a through hole is provided in the center of the second hexagonal seat, and a hexagonal groove is provided at the end of the rotating shaft. The center of the second hexagonal groove is provided with two internal threaded holes, the rotating shaft is inserted into the annular groove, the second hexagonal seat and the second hexagonal groove are clamped with each other, and the second countersunk bolt passes through the through hole and is threadedly connected to the second internal threaded hole.

[0008] Preferably, the writing board includes a support arm plate and a table plate, one end of the support arm plate is rotatably connected to the connecting piece, and the other end is provided with a mounting groove; the mounting groove is provided with a plurality of mounting holes, and the table plate is provided with threaded holes matching the mounting holes, and the mounting holes and the threaded holes are connected by bolts; the bottom surface of the table plate is provided with reinforcing ribs of a grid structure.

[0009] Preferably, an upper card slot is provided at the top of the connecting seat, and a lower card slot is provided at the bottom, the upper card slot is provided with a plurality of card holes, and a card pin is provided at the bottom of the armrest pad for docking with the card holes; the top of the armrest frame and the lower card slot are arranged to cooperate with each other, and a plurality of threaded columns are provided in the lower card slot, and the armrest frame is fixedly connected to the threaded columns by bolts.

[0010] Preferably, an accessory hole is provided at the bottom of the U-shaped groove, an arc-shaped baffle is installed on the accessory hole, the arc-shaped baffle includes an arc-shaped groove and an armrest extension, the arc-shaped groove is matched with the writing board, and the armrest extension is matched with the armrest pad.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model installs the writing board on the connecting piece, and then docks the connecting piece with the connecting seat, so that the writing board can be rotated in two axes, and the writing board can be stored inside through the side slot of the armrest frame or unfolded from the side for use. The utility model has a reasonable design and a simple structure. There is no need to set up an additional rotating shaft to install the writing board. The connecting structure of the writing board is stable and reliable, which greatly improves the service life of the writing board. In addition, the connecting piece and the connecting seat are small in size, which reduces the encroachment on the internal space of the armrest frame, is conducive to the volume control of the armrest frame, greatly reduces the floor space occupied by the seat, can arrange more seats, and improves the space utilization rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a structural diagram of a seat writing board according to an embodiment of the utility model;

[0013] Figure 2 Another angle structural diagram of the seat writing board of the embodiment of the utility model;

[0014] Figure 3This is a side structural diagram of a seat writing board according to an embodiment of the utility model;

[0015] Figure 4 Another side structural diagram of the seat writing board of the embodiment of the utility model;

[0016] Figure 5 An exploded view of a seat writing board according to an embodiment of the utility model;

[0017] Figure 6 for Figure 5 The enlarged view of point A in the middle;

[0018] Figure 7 This is an exploded view of the seat writing board of the embodiment of the utility model from another angle;

[0019] Figure 8 for Figure 7 The enlarged view of point B in the middle;

[0020] Fig. 9 This is a structural diagram of the connecting member of the seat writing board of the embodiment of the utility model;

[0021] Fig.10 This is a structural diagram of the seat writing board in an expanded state according to an embodiment of the utility model;

[0022] exist Figures 1 to 10 In the figure, the corresponding relationship between the names of the components and the numbers of the drawings is as follows:

[0023] 1--handrail, 11--slot, 2--connecting seat, 21--connecting slot, 22--rotating slot, 23--limiting fan block, 3--connecting piece, 31--U-shaped slot, 311--positioning slot, 312--hexagonal slot 1, 313--accessory hole, 32--limiting seat, 33--rotating shaft, 331--hexagonal slot 2, 34--limiting block, 35--connecting part, 351--connecting cap, 3511--annular slot, 3 512--Hexagonal seat 2, 352--Countersunk bolt 2, 4--Writing board, 41--Support arm plate, 411--Mounting slot, 42--Table board, 421--Reinforcement rib, 5--Armrest pad, 6--Swivel part, 61--Top cover, 611--Slot, 612--Card column, 62--Countersunk bolt 1, 63--Upper washer, 64--Lower washer, 65--Bottom cover, 651--Hexagonal seat 1, 652--Column. DETAILED DESCRIPTION

[0024] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0025] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Please refer to Figures 1 to 10 The utility model provides a chair writing board, including an armrest frame 1, a connecting seat 2, a connecting member 3, a writing board 4 and an armrest pad 5; the armrest frame 1 is provided with a accommodating cavity for accommodating the writing board 4 inside, and a slot 11 for the writing board 4 to enter and exit is provided on the front; the connecting seat 2 is arranged on the armrest frame 1; one end of the connecting member 3 is rotatably connected to the connecting seat 2, and the other end is rotatably connected to the writing board 4; the armrest pad 5 is arranged on the connecting seat 2.

[0028] In the embodiment of the utility model, the armrest frame 1 is used for connecting the seat 2 pad, and there is a accommodating cavity inside, which can be used for the writing board 4 to enter and exit and store. Compared with the traditional structure that opens and closes from the top, the present embodiment adopts a structure for entering and exiting from the front. By setting a slot 11 on the front, the writing board 4 can be flipped out from the front or flipped for storage. The top of the armrest frame 1 is provided with a connecting seat 2, and the armrest pad 5 is provided on the connecting seat 2 and covers the top surface of the connecting seat 2 and the top surface of the armrest frame 1 to provide hand support for the user. The front end of the connecting seat 2 is connected to the writing board 4 through a connecting member 3, and the writing board 4 and the connecting member 3 are rotatably connected, and the connecting seat 2 and the connecting member 3 are rotatably connected, and the rotation directions of the two are perpendicular to each other.

[0029] The working process of this embodiment is as follows:

[0030] When the writing board 4 is in the storage state, the writing board 4 is flipped upward and taken out from the armrest frame 1. At this time, the connecting member 3 remains stationary, and the writing board 4 rotates upward with the center of the connection with the connecting member 3 as the center of the circle. After the rotation reaches the specified position, the writing board 4 and the connecting member 3 are folded downward together, and finally the writing board 4 is placed in front of the seat cushion.

[0031] When the writing board 4 needs to be stored, the writing board 4 and the connecting member 3 can be folded upwards together, and then the writing board 4 can be turned toward the slot 11 so that the writing board 4 can enter the inside of the armrest 1 through the slot 11 .

[0032] A U-shaped groove 31 is provided on one side of the connecting member 3, and a limiting seat 32 is provided on the other side; the writing board 4 is inserted into the U-shaped groove 31 and is rotatably connected to the U-shaped groove 31 through the rotating part 6; a rotating shaft 33 and a pair of limiting blocks 34 are provided on the limiting seat 32; the pair of limiting blocks 34 are symmetrically arranged on both sides of the rotating shaft 33, and the rotating shaft 33 is rotatably connected to the connecting seat 2;

[0033] The connecting seat 2 is provided with a connecting groove 21, and a rotating groove 22 is provided at the center of the connecting groove 21; a pair of limiting fan blocks 23 are provided in the connecting groove 21, and the pair of limiting fan blocks 23 and a pair of limiting blocks 34 are arranged in cooperation with each other; the rotating shaft 33 is inserted into the rotating groove 22, and a connecting portion 35 is provided at its end, and is connected to the connecting seat 2 through the connecting portion 35.

[0034] Through the above structural design, the connecting member 3 is connected to the writing board 4 through the U-shaped groove 31, and is installed and connected through the rotating part 6, so that the writing board 4 can rotate with the central axis of the rotating part 6 as the axis. At the other end of the connecting member 3, a rotating shaft 33 is used to dock with the connecting seat 2, and the rotating shaft 33 is inserted into the rotating groove 22, so that the connecting member 3 can rotate in the rotating groove 22, and the rotating direction of the rotating shaft 33 is perpendicular to the rotating direction of the writing board 4. In order to enable the writing board 4 to rotate to the right position and avoid excessive flipping that causes the writing board 4 to be unable to remain horizontal, this embodiment is provided with a fan-shaped limit fan block 23 inside the connecting seat 2, and then a limit block 34 is provided on both sides of the rotating shaft 33. When the connecting member 3 rotates to a certain angle on the rotating groove 22, the limit block 34 contacts the limit fan block 23, so that the connecting member 3 cannot continue to rotate, and then it can be ensured that the rotation angle of the writing board 4 in this axial direction can meet the use requirements.

[0035] The rotating part 6 includes a top cover 61, a countersunk bolt 62, an upper washer 63, a lower washer 64 and a bottom cover 65; a slot 611 is provided at the bottom of the top cover 61, and a clamping column 612 is provided on the side; the bottom cover 65 includes a hexagonal seat 651, a column 652 is provided on the hexagonal seat 651, and an internal threaded hole 1 is provided in the center of the column 652; the upper washer 63 and the lower washer 64 are respectively installed on the top surface and the bottom surface of the writing board 4; the column 652 passes through the lower washer 64, the writing board 4 and the upper washer 63, and is inserted into the slot 611; the countersunk bolt 62 passes through the top cover 61 and is threadedly connected to the internal threaded hole 1; a positioning groove 311 matching with the clamping column 612 is provided on one side wall of the U-shaped groove 31, and a hexagonal groove 312 matching with the hexagonal seat 651 is provided on the other side wall.

[0036] Through the above structural design, the top cover 61 and the bottom cover 65 cooperate with each other to install the writing board 4 in the U-shaped groove 31. In order to improve the stability of the connection, the top and bottom of the writing board 4 are respectively provided with grooves and cooperate with the upper gasket 63 and the lower gasket 64, so that the connection between the two sides of the writing board 4 and the U-shaped groove 31 is stable and not easy to wear. Once the upper gasket 63 or the lower gasket 64 is damaged, it can be replaced at any time to extend the service life of the writing board 4. At the same time, in order to prevent the top cover 61 and the bottom cover 65 from rotating when the writing board 4 is turned over, thereby affecting the stability of the connection, the present embodiment is provided with a clamping column 612 in the top cover 61, and a hexagonal seat 651 is provided on the bottom cover 65, and then a positioning groove 311 and a hexagonal groove 312 that cooperate with them are respectively provided on the connecting member 3, so that the top cover 61, the bottom cover 65 and the connecting member 3 are fixedly connected.

[0037] Preferably, the connecting portion 35 includes a connecting cap 351 and a second countersunk bolt 352, the connecting cap 351 is provided with an annular groove 3511 on one side surface facing the rotating shaft 33, a second hexagonal seat 3512 is provided in the center of the annular groove 3511, a through hole is provided in the center of the second hexagonal seat 3512, a second hexagonal groove 331 is provided at the end of the rotating shaft 33, a second internal threaded hole is provided in the center of the second hexagonal groove 331, the rotating shaft 33 is inserted into the annular groove 3511, the second hexagonal seat 3512 and the second hexagonal groove 331 are clamped with each other, and the second countersunk bolt 352 passes through the through hole and is threadedly connected to the second internal threaded hole. In this embodiment, the rotating shaft 33 is inserted into the rotating groove 22 from the opening on one side of the connecting seat 2, and then the connecting cap 351 is installed on the rotating shaft 33 from the other side of the connecting seat 2, and the annular groove 3511 on the connecting cap 351 covers the rotating shaft 33, and then the hexagonal seat 2 3512 is inserted into the hexagonal groove 2 331, so that the connecting cap 351 and the rotating shaft 33 are kept fixed, and finally the connecting cap 351 and the rotating shaft 33 are fixedly connected by the countersunk bolt 2 352. Through the above structural design, the connecting cap 351 can clamp the rotating shaft 33 in the connecting seat 2 and maintain good rotation. The connecting cap 351 and the rotating shaft 33 rotate together, reducing the probability of the connecting cap 351 falling off.

[0038] Preferably, the writing board 4 includes a support arm plate 41 and a table plate 42. One end of the support arm plate 41 is rotatably connected to the connecting member 3, and the other end is provided with a mounting groove 411; the mounting groove 411 is provided with a plurality of mounting holes, and the table plate 42 is provided with threaded holes that match the mounting holes, and the mounting holes and the threaded holes are connected by bolts; the bottom surface of the table plate 42 is provided with a grid structure of reinforcing ribs 421. In this embodiment, the table plate 42 and the connecting member 3 are connected by the support arm plate 41, and the support arm plate 41 is provided with a mounting groove 411 that docks with the table plate 42. The mounting groove 411 has a large area and can maintain a large contact surface with the table plate 42, so that the connection of the table plate 42 is more stable.

[0039] Preferably, the top of the connecting seat 2 is provided with an upper card slot, and the bottom is provided with a lower card slot, the upper card slot is provided with a plurality of card holes, and the bottom of the armrest pad 5 is provided with a card pin that docks with the card holes; the top of the armrest frame 1 and the lower card slot are arranged in cooperation with each other, and the lower card slot is provided with a plurality of threaded columns, and the armrest frame 1 is fixedly connected with the threaded columns by bolts. In this embodiment, the upper card slot at the top of the connecting seat 2 is used to dock with the armrest pad 5, and a card pin is provided at the bottom of the armrest pad 5 and can be inserted into the card hole to achieve quick installation and disassembly. The bottom of the connecting seat 2 is provided with a lower card slot that docks with the armrest frame 1, and the connection between the armrest frame 1 and the connecting seat 2 forms an installation structure with a certain slope, which increases the contact area and improves the stability of the connection.

[0040] Preferably, the bottom of the U-shaped groove 31 is provided with an accessory hole 313, and an arc-shaped baffle is installed on the accessory hole 313, and the arc-shaped baffle includes an arc-shaped groove and an armrest extension portion, the arc-shaped groove is arranged in cooperation with the writing board 4, and the armrest extension portion is arranged in cooperation with the armrest pad 5. In this embodiment, by installing an arc-shaped baffle at the bottom of the U-shaped groove 31, the front of the arc-shaped baffle is an arc-shaped groove, the arc-shaped groove can be used for the writing board 4 to rotate, and the top surface of the arc-shaped baffle is a structure similar to the armrest pad 5, so as to achieve the effect of extending the armrest pad 5, which can well cover the gap between the writing board 4 and the connecting member 3, and can improve the comfort of use.

[0041] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model installs the writing board on the connecting piece, and then docks the connecting piece with the connecting seat, so that the writing board can be rotated in two axes, and the writing board can be stored inside through the side slot of the armrest frame or unfolded from the side for use. The utility model has a reasonable design and a simple structure. There is no need to set up an additional rotating shaft to install the writing board. The connecting structure of the writing board is stable and reliable, which greatly improves the service life of the writing board. In addition, the connecting piece and the connecting seat are small in size, which reduces the encroachment on the internal space of the armrest frame, is conducive to the volume control of the armrest frame, greatly reduces the floor space occupied by the seat, can arrange more seats, and improves the space utilization rate.

[0042] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A seat writing board, characterized in that: The invention comprises an armrest frame (1), a connecting seat (2), a connecting piece (3), a writing board (4) and an armrest pad (5); the armrest frame is provided with a receiving cavity for receiving the writing board inside, and a slot (11) for the writing board to enter and exit is provided on the front side; the connecting seat is arranged on the armrest frame; one end of the connecting piece is rotatably connected to the connecting seat, and the other end is rotatably connected to the writing board; the armrest pad is arranged on the connecting seat; A U-shaped groove (31) is provided on one side of the connecting member, and a limit seat (32) is provided on the other side; the writing board is inserted into the U-shaped groove and is rotatably connected to the U-shaped groove via a rotating portion (6); a rotating shaft (33) and a pair of limit blocks (34) are provided on the limit seat; the pair of limit blocks are symmetrically arranged on both sides of the rotating shaft, and the rotating shaft is rotatably connected to the connecting seat; The connecting seat is provided with a connecting groove (21), and a rotating groove (22) is provided at the center of the connecting groove; a pair of limiting fan blocks (23) are provided in the connecting groove, and the pair of limiting fan blocks and the pair of limiting blocks are arranged in cooperation with each other; the rotating shaft is inserted into the rotating groove, and a connecting portion (35) is provided at the end thereof, and is connected to the connecting seat through the connecting portion; The rotating part comprises a top cover (61), a countersunk bolt (62), an upper washer (63), a lower washer (64) and a bottom cover (65); a slot (611) is provided at the bottom of the top cover, and a clamping column (612) is provided on the side; the bottom cover comprises a hexagonal seat (651), a column (652) is provided on the hexagonal seat, and an internal threaded hole is provided in the center of the column; the upper washer and the lower washer are respectively mounted on the top surface and the bottom surface of the writing board; the column passes through the lower washer, the writing board and the upper washer, and is inserted into the slot; the countersunk bolt passes through the top cover and is threadedly connected to the internal threaded hole; a positioning groove (311) matching with the clamping column is provided on one side wall of the U-shaped groove, and a hexagonal groove (312) matching with the hexagonal seat is provided on the other side wall.

2. The seat writing board according to claim 1, characterized in that: The connecting portion comprises a connecting cap (351) and two countersunk bolts (352); a circular groove (3511) is provided on a side surface of the connecting cap facing the rotating shaft; a hexagonal seat (3512) is provided in the center of the circular groove; a through hole is provided in the center of the hexagonal seat; a hexagonal groove (331) is provided at the end of the rotating shaft; a second internal threaded hole is provided in the center of the hexagonal groove; the rotating shaft is inserted into the circular groove; the hexagonal seat (331) and the hexagonal groove (331) are mutually engaged; the countersunk bolt (331) passes through the through hole and is threadedly connected to the second internal threaded hole.

3. The seat writing board according to claim 1, characterized in that: The writing board comprises a support arm plate (41) and a table top (42); one end of the support arm plate is rotatably connected to the connecting piece, and the other end is provided with a mounting groove (411); the mounting groove is provided with a plurality of mounting holes, and the table top is provided with threaded holes matching the mounting holes, and the mounting holes and the threaded holes are connected by bolts; the bottom surface of the table top is provided with reinforcing ribs (421) of a grid structure.

4. The seat writing board according to claim 3, characterized in that: An upper card slot is provided on the top of the connecting seat, and a lower card slot is provided on the bottom. The upper card slot is provided with a plurality of card holes, and a card pin is provided at the bottom of the armrest pad to connect with the card holes. The top of the armrest frame and the lower card slot are arranged to cooperate with each other, and a plurality of threaded columns are provided in the lower card slot. The armrest frame is fixedly connected to the threaded columns by bolts.

5. The seat writing board according to claim 1, characterized in that: The bottom of the U-shaped groove is provided with an accessory hole (313), and an arc-shaped baffle is installed on the accessory hole. The arc-shaped baffle includes an arc-shaped groove and an armrest extension portion. The arc-shaped groove is arranged in cooperation with the writing board, and the armrest extension portion is arranged in cooperation with the armrest pad.

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