CN210390876U - Seat back plate for vehicle and vehicle - Google Patents

Abstract

The utility model provides a seat backplate and vehicle for vehicle relates to vehicle technical field. The utility model discloses a seat back board includes the main part, and the main part can be dismantled and connect in the rear side of seat. A movable plate is arranged on one side surface of the main body, one end of the movable plate is connected with the main body in a pivoting manner around the axial direction extending along the horizontal plane, so that the movable plate can be switched between a folded state and a use state; the use state is that the movable plate and the plane of the main body form a preset angle, and the preset angle is 5-150 degrees. Two first grooves are arranged at the lower side position of the movable plate of the main body, so that knees of passengers in the rear row can be placed in the first grooves when the passengers use the movable plate. The utility model discloses a backplate makes things convenient for the back row passenger to have dinner, study and the cell-phone activity such as watching the film. When the backboard is not needed to be used for related activities, the backboard can be directly detached and placed elsewhere, so that the attractiveness of the vehicle is guaranteed, and the space can be saved.

Description

Seat back plate for vehicle and vehicle

Technical Field

The utility model relates to the technical field of vehicles, especially, relate to a vehicle seat backplate and vehicle.

Background

The internal space of the existing vehicle is not fully utilized, the requirement of a passenger on space use cannot be met as far as possible, a fixing plate is arranged at the rear part of a main driving seat and a secondary driving seat of part of vehicles, so that the rear-row passenger, especially a student, can finish homework or other learning items by using time under the condition of urban congestion, and the rear-row passenger can conveniently provide dining, study, mobile phone movie watching and other activities when the traffic jams at a high speed in a holiday.

In the prior art, the storage plate is directly arranged at the backrest of the seat of the vehicle, and the storage plate is directly arranged at the rear side of the backrest, so that the appearance of some vehicles is not attractive when the function of the partition is not needed. In addition, the storage plate is generally made of harder plastic, and compared with the hardness of the back side of the seat backrest which is originally supposed to be, the back side of the backrest with the storage plate is too hard, so that no redundant space is left when the storage plate is used, and the riding experience of a vehicle is influenced.

SUMMERY OF THE UTILITY MODEL

One object of the utility model is to provide a vehicle seat backrest, which solves the problems that the prior vehicle can not directly carry out dining and study, etc.;

the utility model discloses another purpose is to solve the shelf of current vehicle and can not remove, influences the use of vehicle and pleasing to the eye problem.

Another object of the present invention is to solve the problem that the shelf of the existing vehicle does not give the user an activity space, and thus the passenger experiences.

In particular, the utility model discloses a seat backplate for vehicle, the vehicle includes the seat, the seat backplate includes:

a main body detachably coupled to a rear side of the seat;

a movable plate is arranged on one side surface of the main body, one end of the movable plate is connected with the main body in a pivoting mode around the axial direction extending along the horizontal plane, and therefore the movable plate can be switched between a folded state and a use state; the use state is that the movable plate and the plane of the main body form a preset angle, and the preset angle is 5-150 degrees;

two first grooves are formed in the lower side position of the movable plate of the main body, so that knees of passengers in the rear row can be placed in the first grooves when the movable plate is used.

Optionally, the opening of the first groove is shaped like an inwardly recessed strip, and the cross section of the bottom of the first groove is in a semi-arc shape; or the opening of the first groove is in an oval shape, and the bottom of the first groove is a curved surface which is shallow close to the opening and deep far away from the opening; the depth of the first groove bottom is the same as the thickness of the body.

Optionally, a second groove is formed in the main body, and the movable plate is located in the second groove when the movable plate is in the collapsed state; and a buffer block is arranged on one side surface of the movable plate close to the second groove.

Optionally, a plurality of positioning strips arranged side by side are arranged on one side surface of the movable plate;

the main part still including being located the backup pad in the second recess, the one end of backup pad with main part rotatable coupling, so that when the fly leaf is located in the second recess the backup pad is hidden between the fly leaf and the second recess, when the fly leaf needs to be fixed when predetermineeing the angle, the other end of backup pad is supported in location strip department.

Optionally, the movable plate includes a first end and a second end which are oppositely arranged, and the first end is provided with a first rotating shaft hole;

one end of two opposite side walls of the second groove is provided with two opposite first fixing holes, and the first fixing holes are formed in two sides of the second groove after penetrating through the first rotating shaft hole through the first rotating shaft, so that the movable plate is rotatably connected with the main body.

Optionally, the mobile plate further comprises a locking mechanism for locking the second end of the mobile plate so that the mobile plate is completely hidden in the second groove;

the locking mechanism includes:

a locking boss disposed adjacent to the second end of the movable plate, the locking boss having a locking hole; and

the locking bin is positioned at one end, far away from the first fixing hole, of the second groove, a locking button mechanism and an elastic sheet are arranged at the locking bin, and the locking button mechanism is abutted to the locking bin through the elastic sheet;

the locking button mechanism is matched with the locking hole to fix or release the movable plate.

Optionally, the locking button mechanism comprises:

one end of the locking button body is an inclined locking end, and the other end of the locking button body is provided with a first elastic piece inserting port; and

the operation plate is connected with the locking button body through a connecting part, and the size of the connecting part is smaller than that of the operation plate and the locking button body, so that a gap is formed between the operation plate and the locking button body;

the locking bin is provided with a first accommodating space for accommodating the locking button body and a second accommodating space for accommodating the operating plate;

the first accommodating space and the second accommodating space are blocked by a first partition wall, an avoiding hole is formed in the first partition wall, and the connecting part is located at the avoiding hole; the first accommodating space and the second groove are isolated by a second partition wall, a locking opening is formed in the second partition wall, a slope locking end of the locking button body penetrates through the locking opening from the first accommodating space to the second groove, and the slope locking end is matched with the locking hole at the second groove to fix or release the movable plate;

the first accommodating space is provided with a second elastic sheet inserting port at the side wall opposite to the second isolation wall, and the elastic sheet is abutted between the first elastic sheet inserting port and the second elastic sheet inserting port, so that the locking button mechanism has a tendency of moving away from the direction of the elastic sheet.

Optionally, the second accommodating space is located on the same side as the second groove, and the operating panel is exposed outside the second accommodating space;

and a plurality of anti-slip strips are arranged on one exposed side surface of the operating plate.

Optionally, one end of the support plate is provided with a second rotating shaft hole;

two second fixing holes which are oppositely arranged are formed in the middle positions of two oppositely arranged side walls of the second groove, and a second rotating shaft penetrates through the second rotating shaft holes and then is arranged in the second fixing holes on the two sides, so that the supporting plate is rotatably connected with the main body; the support plate is provided with lightening holes.

Particularly, the utility model provides a vehicle, including the seat and with above the seat backplate for vehicle, the backplate with the connection can be dismantled to the seat.

The utility model discloses a seat backplate can be dismantled with the seat and be connected for install in seat department when the vehicle need utilize the seat backplate to carry out relevant operation, make things convenient for the back row passenger to have dinner, study and the cell-phone activity such as watching the film. When the seat back plate is not needed to be used for relative activities, the seat back plate can be directly detached and placed elsewhere, so that the attractiveness of the vehicle is guaranteed, and the space can be saved.

Further, the utility model discloses still set up first recess in backplate department, this first recess can be the uncovered circular arc bottom of regular strip, supplies back row passenger's knee to put into, and perhaps the shape of first recess can be for the shallow curved surface of middle dark side, and surface when basically can be crooked with the knee suits, has improved the travelling comfort of back row passenger both legs when using the backplate of this embodiment.

Further, the utility model discloses a fly leaf is accomodate when the folded state inside the second recess, rotates when the fly leaf needs to be used to predetermineeing the angle and fix, makes things convenient for study and dining etc.. When the movable plate is not needed, the movable plate can be completely hidden in the second groove, so that the normal activity space of the passengers in the back row is ensured, and the space utilization is improved. Meanwhile, the buffer block is arranged at one side face of the movable plate close to the second groove, so that when the movable plate is hidden to the second groove, vibration noise generated between the movable plate and the main body in the driving process of the vehicle is prevented.

The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the present invention will be described in detail hereinafter, by way of illustration and not by way of limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

fig. 1 is a schematic structural view of a movable plate of a seat back plate according to an embodiment of the present invention when closed;

fig. 2 is a schematic structural view of a movable plate of a seat back according to an embodiment of the present invention when it is turned over;

fig. 3 is a schematic structural view of a movable plate of a seat back according to an embodiment of the present invention;

fig. 4 is a schematic block diagram of a seat back panel without a movable plate and a support plate according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a support plate of a seat back according to an embodiment of the present invention;

fig. 6 is a schematic block diagram of the back of a seat back according to an embodiment of the present invention;

fig. 7 is a schematic block diagram of another angle of the back of the seat back according to an embodiment of the present invention;

FIG. 8 is a schematic block diagram of a lock button mechanism of a seat back in accordance with an embodiment of the present invention;

FIG. 9 is a schematic block diagram of another angle of the locking button mechanism of the seat back in accordance with an embodiment of the present invention;

fig. 10 is a schematic structural view of a lock chamber of a seat back according to an embodiment of the present invention.

Detailed Description

Fig. 1 is a schematic structural view when a movable plate of a seat back plate 100 for a vehicle according to an embodiment of the present invention is closed; fig. 2 is a schematic structural view when the movable panel of the seat back panel 100 for a vehicle according to one embodiment of the present invention is turned open. Specifically, the present embodiment discloses a seat back panel 100 for a vehicle. Wherein the vehicle includes a seat including a seat cushion and a seatback, and the seat back panel 100 is disposed at a rear side of the seatback. The seat back 100 of the present embodiment may include a main body 10, and the main body 10 may be detachably coupled to the seat. Specifically, the main body 10 is provided with a plurality of mounting holes 11, and the seat back 100 is mounted at the seat back of the vehicle by bolts through the mounting holes 11. A movable plate 21 is provided at one side of the main body 10, and one end of the movable plate 21 is pivotally connected to the main body 10 about an axial direction extending along a horizontal plane to switch the movable plate 21 between a collapsed state and a use state. In the use state, the movable plate and the plane of the main body 10 form a predetermined angle, and the predetermined angle may be 5-150 °. Two first grooves 30 are provided at a lower position of the flap 21 of the main body 10 so that the knees of a passenger in the rear row can be received in the first grooves 30 when using the flap.

In the present embodiment, the seat back panel 100 of the present embodiment may be provided on the rear side of the seat back of the vehicle. This seat backplate 100 can be dismantled with the seat back and be connected for install in seat department when the vehicle needs utilize seat backplate 100 to carry out relevant operation, make things convenient for the back row passenger to have dinner, study and the cell-phone activity such as watching the film. When the seat back panel 100 is not needed to perform related activities, the seat back panel 100 can be directly detached and placed elsewhere, so that the attractiveness of the vehicle is guaranteed, and the space can be saved.

As a specific example, the opening of the first groove 30 is shaped like an inwardly recessed strip, and the cross section of the bottom of the first groove 30 is a semi-circular arc. Preferably, the shape of the opening of the first groove 30 is regular circular, and the bottom is a curved surface which is shallow near the opening and deep far from the opening. The open position is the junction position of the groove and the main body. The depth of the bottom of the first groove 30 is the same as the thickness of the body 10. Specifically, the first recess 30 is preferably designed to conform to the outer surface of a human knee when bent, thereby improving the comfort of a rear passenger to place the knee in the first recess 30. As a specific example, the main body 10 is provided with a second groove 20, and the movable plate 21 is located inside the second groove 20 when the movable plate 21 is in the collapsed state. A buffer 219 is provided at a side of the movable plate 21 adjacent to the second groove 20.

The movable plate 21 in this embodiment is disposed at the second groove 20, and is rotated to a predetermined angle and fixed when the movable plate 21 needs to be used, which is convenient for study, dining and the like. The preset angle can be freely designed according to the angle of the actual vehicle seat and the angle required to be used. Typically the predetermined angle is 5-150. Since the backrest of the vehicle is generally at an obtuse angle with the ground, the movable plate 21 is parallel to the ground, and the movable plate 21 and the seat should also be at an obtuse angle. The movable plate 21 is generally parallel to the ground at an optimum angle for use. Therefore, the movable plate is located at 90-150 degrees with respect to the plane of the backrest of the vehicle seat. When the movable plate 21 is not needed, the movable plate 21 can be completely hidden in the second groove 20, so that the normal movement space of the passengers in the rear row is ensured, and the space utilization is improved. The buffer block 219 is disposed at a side of the flap adjacent to the second groove 20, so that when the flap 21 is hidden in the second groove 20, the vibration noise generated between the flap 21 and the main body 10 during the driving of the vehicle is prevented.

Fig. 3 is a schematic structural view of the movable plate 21 of the seat back 100 according to an embodiment of the present invention. As a specific embodiment, as shown in fig. 2 and 3, in the present embodiment, a side surface of the movable plate 21 is provided with a plurality of positioning bars 211 arranged side by side. The main body 10 further includes a supporting plate 22 located in the second groove 20, one end of the supporting plate 22 is rotatably connected to the main body 10, so that the supporting plate 22 is hidden between the movable plate 21 and the second groove 20 when the movable plate 21 is located in the second groove 20, and the other end of the supporting plate 22 is supported at the positioning bar 211 when the movable plate 21 needs to be fixed at a preset angle.

In the present embodiment, as shown in fig. 2, the movable plate 21 is fixed at a predetermined angle by means of the support plate 22. When the movable plate 21 is needed, the movable plate 21 is lifted up, and the supporting plate 22 abuts against the positioning bar 211. The plurality of positioning bars 211 in this embodiment are designed to adjust a predetermined angle when the movable plate 21 is fixed. The number and spacing of the positioning bars 211 can be freely designed and are not limited to the protection scope shown in the drawings of the present application.

As another specific embodiment, as shown in fig. 3, the movable plate 21 includes a first end 212 and a second end 213 disposed opposite to each other, and a first shaft hole 214 is disposed at the first end 212. The first shaft hole 214 extends along a plane in which the movable plate 21 is located. Two first fixing holes 215 are disposed at one end of two opposite side walls of the second groove 20, and the movable plate 21 is rotatably connected to the main body 10 by a first rotating shaft 216 passing through the first rotating shaft hole 214 and then being disposed at the first fixing holes 215 at two sides.

Fig. 4 is a schematic structural view of the seat back 100 without the movable plate 21 and the support plate 22 according to an embodiment of the present invention; specifically, as shown in fig. 4, the second groove 20 of the present embodiment has a side wall. In order for the movable plate 21 to be able to rotate in the axial direction of the horizontal plane, two first fixing holes 215 are provided at opposite sidewalls of the second groove 20, and the two first fixing holes 215 must be designed in the same plane. The movable plate 21 can rotate along the first rotating shaft 216 to reach a predetermined angle and position by the first rotating shaft 216 passing through the first rotating shaft hole 214 and then being disposed at the two first fixing holes 215.

Fig. 5 is a schematic structural view of a support plate of a seat back according to an embodiment of the present invention; as a specific example, as shown in fig. 4 and 5, one end of the support plate 22 of the present embodiment is provided with a second rotating shaft hole 221. Two second fixing holes 217 are formed at the middle positions of the two opposite side walls of the second groove 20, and the second rotating shaft 218 passes through the second rotating shaft hole 221 and then is disposed at the second fixing holes 217 at the two sides, so that the support plate 22 is rotatably connected with the main body 10. The support plate 22 is provided with lightening holes 222. The lightening holes 222 may lighten the mass of the support plate 22 and thus the seat back 100.

Specifically, the support plate 22 needs the same rotation as the movable plate 21, and thus, the two second fixing holes 217 of the present embodiment are also located at the same horizontal plane. The second shaft 218 also needs to be transferred to the second shaft hole 221 first and then the support plate 22 is fixed at the second fixing hole 217. Also, the supporting plate 22 is disposed at a certain positioning bar 211 of the movable plate 21 during the rotation process according to actual requirements.

Fig. 6 is a schematic structural view of the back surface of the seat back plate 100 according to an embodiment of the present invention; fig. 7 is a schematic block diagram of another angle of the back surface of the seat back plate 100 according to an embodiment of the present invention; as a specific example, the body 10 may be a thin plate, and the second groove 20 and the first groove 30 form a boss on the rear surface of the body 10. While the first fixing hole 215 and the second fixing hole 217 are formed at their rear surfaces with two protrusions (as shown in fig. 7) or holes directly penetrating the sidewalls (as shown in fig. 8). Of course, as another embodiment, the main body 10 may be a plate having a certain thickness. While neither recess nor fixing hole is visible on the back of the body 10.

As another specific embodiment, the back plate 100 of the present embodiment may further include a locking mechanism 50 for locking the second end 213 of the movable plate 21 such that the movable plate 21 is completely located in the second groove 20.

The locking mechanism 50 may include a locking boss 51 and a locking bin 52. The locking boss 51 is disposed near the second end 213 of the movable plate 21, and the locking boss 51 is provided with a locking hole 511. The locking bin 52 is located at one end of the first fixing hole 215 far away from the second groove 20, a locking button mechanism 53 and a spring plate 54 are arranged at the locking bin 52, and the locking button mechanism 53 abuts against the locking bin 52 through the spring plate 54. Wherein the engagement of the locking button mechanism 53 with the locking hole 511 fixes or releases the movable plate 21.

Fig. 8 is a schematic structural view of a lock button mechanism 53 of a seat back according to an embodiment of the present invention; fig. 9 is a schematic block diagram of another angle of the locking button mechanism 53 of the seat back 100 according to an embodiment of the present invention. As a specific example, the lock button mechanism 53 may include a lock button body 55 and an operation plate 56. One end of the locking button body 55 is an inclined locking end 551, and the other end is provided with a first elastic piece socket 552. The operation plate 56 is connected to the lock knob body 55 through a connecting portion 58, and the size of the connecting portion 58 is smaller than the size of the operation plate 56 and the lock knob body 55 so that a gap is formed between the operation plate 56 and the lock knob body 55.

Fig. 10 is a schematic structural view of the lock chamber 52 of the seat back 100 according to an embodiment of the present invention. Specifically, the lock chamber 52 is provided with a first accommodation space 521 that accommodates the lock knob body 55 and a second accommodation space 522 that accommodates the operation plate 56. The first accommodating space 521 and the second accommodating space 522 are blocked by the first partition wall 523, an avoiding hole 524 is provided at the first partition wall 523, and the connecting portion 58 is located at the avoiding hole 524. The first receiving space 521 and the second groove 20 are blocked by the second partition wall 525, the second partition wall 525 is provided with a locking opening 526, the inclined locking end 551 of the locking button body 55 passes through the locking opening 526 from the first receiving space 521 to the second groove 20, and the inclined locking end 551 is engaged with the locking hole 511 at the second groove 20 to fix or release the movable plate 21. The first receiving space 521 is provided with a second elastic piece socket (not shown) at a side wall opposite to the second partition wall 525, and the elastic piece 54 abuts between the first elastic piece socket 552 and the second elastic piece socket, so that the locking button mechanism 53 tends to move away from the elastic piece 54.

Specifically, the locking button mechanism 53 is used to fix the second end 213 of the movable plate 21 inside the second groove 20 when the movable plate 21 is not needed to be used. Specifically, the lock button body 55 and the operation plate 56 are respectively located in the first accommodation space 521 and the second accommodation space 522, and the connection portion 58 passes through the relief hole 524 in the middle. In the present embodiment, the size of the avoiding hole 524 is larger than the size of the connecting portion 58 and smaller than the sizes of the locking button body 55 and the operating plate 56. The lock knob body 55, the connecting portion 58 and the operation plate 56 may be connected with 57. The 57 may be a bolt or a screw. A gap between the lock knob body 55 and the operation plate 56 is caught at the first blocking wall. When the spring piece 54 abuts at the lock button body 55, the lock button body 55 has a tendency of movement opposite to that of the spring piece 54, but is blocked by the escape hole 524 and cannot move.

The locking button body 55 in this embodiment is provided with a slant locking end 551 at one end, and the slant of the slant locking end 551 faces one side of the movable plate 21. When the movable plate 21 needs to be closed, the movable plate 21 is directly pressed, the locking boss 51 on the movable plate 21 presses the inclined locking end 551, and the locking button body 55 moves along the direction of the elastic sheet 54. When the inclined locking end 551 reaches the locking hole 511, the inclined locking end 551 is engaged with the locking hole 511 under the action of the elastic sheet 54, so as to ensure the locking of the movable plate 21. When the movable plate 21 needs to be opened, the operation plate 56 is moved by a force applied to the operation plate 56 in a direction opposite to the direction of the force applied by the resilient plate 54, and the operation plate 56 moves the locking button body 55 to move the inclined locking end 551 out of the locking hole 511, thereby releasing the movable plate 21.

As an example, the second accommodation space 522 is located on the same side as the second recess 20, and the operation plate 56 is exposed outside the second accommodation space 522. A plurality of anti-slip strips 561 are disposed on an exposed side of the operation plate 56, and the number, shape and spatial distribution of the anti-slip strips 561 can be freely designed without being limited by the drawings of the present application. The operation plate 56 is exposed to the outside for operation, and the design of the anti-slip strip 561 prevents the user from sliding during operation, ensuring the effectiveness of the operation.

As a specific embodiment, a buffer 219 is provided at a side of the movable plate 21 near the second groove 20. The buffer block 219 is disposed at a position of the flap 21 near the second end 213, and may perform buffering when the flap 21 is locked, thereby preventing vibration noise from being generated between the flap 20 and the main body 10 during the driving of the vehicle. Meanwhile, when the movable plate 21 is unlocked, the movable plate 21 can be ejected out by the elastic force of the buffer 219.

As a specific example, as shown in fig. 1 to 10, the main body 10 of the present embodiment has a square plate shape adapted to the shape of the backrest. The second groove 20 and the movable plate 21 are also square, and the first fixing hole 215 is disposed at the uppermost end of the left and right sidewalls of the second groove 20. The first end 212 of the movable plate 21 is connected to the uppermost end of the second groove 20 by a first rotating shaft 216. And the shape of the movable plate 21 in the present embodiment is adapted to the shape of the second groove 20, when the movable plate 21 is completely locked at the second groove 20, the surface of the movable plate 21 and the surface of the main body 10 form a continuous plane.

In addition, a second fixing hole 217 is formed at a position lower than the middle of the two sidewalls of the second groove 20, and the support plate 22 is fixed at the second fixing hole 217 by a second rotation shaft 218. The size of the support plate 22 is substantially equal to the size of the area from the second fixing hole 217 to the second groove 20. When the movable plate 21 is retracted, the support plate 22 rotates upward into the second groove 20, and the movable plate 21 is directly locked by the locking mechanism 50. When the movable plate 21 needs to be used, the movable plate 21 is lifted, and the supporting plate 22 is rotated downward to the positioning bar 211 capable of supporting the movable plate 21.

The exposed surface of the movable plate 21 is defined as a front surface, and the hidden surface is defined as a back surface. The positioning bars 211 are provided at the opposite surface of the movable plate 21 and the position restricting bars are provided in parallel.

The reverse side of the movable plate 21 is further provided with a locking boss 51, and the locking boss 51 is provided with a locking hole 511.

A locking bin 52 is arranged below the second groove 20, a locking button mechanism 53 is arranged in the locking bin 52, the locking button mechanism 53 utilizes an elastic sheet 54 to lower pressure, so that a slope locking end 551 extends out of the second groove 20, and the locking button mechanism 53 can also move up and down.

When the movable plate 21 needs to be locked, the movable plate 21 is directly pressed, and the locking hole 511 on the locking boss 51 on the movable plate 21 locks the inclined locking end 551 on the locking button mechanism 53 into the locking hole 511. When it is required to release the movable plate 21, the operating plate 56 is directly pushed downward, and the locking button 53 moves downward, so that the inclined locking end 551 comes out of the locking hole 511, thereby releasing the movable plate 21 and completing the releasing action.

As a specific example, the present embodiment includes a vehicle that may include a seat including a backrest behind which a back plate 100 is disposed, the back plate 100 being detachably connected to the seat. The back plate 100 is mounted for use when needed and the back plate 100 is dismounted when the back plate 100 is not needed.

Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described in detail herein, many other variations and modifications can be made, consistent with the principles of the invention, which are directly determined or derived from the disclosure herein, without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and interpreted to cover all such other variations or modifications.

Claims (10)

1. A seat back panel for a vehicle, the vehicle including a seat, the seat back panel comprising:

a main body detachably coupled to a rear side of the seat;

a movable plate is arranged on one side surface of the main body, one end of the movable plate is connected with the main body in a pivoting mode around the axial direction extending along the horizontal plane, and therefore the movable plate can be switched between a folded state and a use state; the use state is that the movable plate and the plane of the main body form a preset angle, and the preset angle is 5-150 degrees;

two first grooves are formed in the lower side position of the movable plate of the main body, so that knees of passengers in the rear row can be placed in the first grooves when the movable plate is used.

2. The seat back for a vehicle of claim 1,

the shape of the opening of the first groove is an inwards concave strip shape, and the section of the bottom of the first groove is in a semi-arc shape; or the opening of the first groove is in an oval shape, and the bottom of the first groove is a curved surface which is shallow close to the opening and deep far away from the opening; the depth of the first groove bottom is the same as the thickness of the body.

3. The seat back for a vehicle of claim 1,

the main body is provided with a second groove, and the movable plate is positioned in the second groove when in the folded state; and a buffer block is arranged on one side surface of the movable plate close to the second groove.

4. The seat back for a vehicle of claim 3,

a plurality of positioning strips arranged side by side are arranged on one side surface of the movable plate;

the main part still including being located the backup pad in the second recess, the one end of backup pad with main part rotatable coupling, so that when the fly leaf is located in the second recess the backup pad is hidden between the fly leaf and the second recess, when the fly leaf needs to be fixed when predetermineeing the angle, the other end of backup pad is supported in location strip department.

5. The seat back for a vehicle of claim 4,

the movable plate comprises a first end part and a second end part which are oppositely arranged, and a first rotating shaft hole is formed in the first end part;

one end of two opposite side walls of the second groove is provided with two opposite first fixing holes, and the first fixing holes are formed in two sides of the second groove after penetrating through the first rotating shaft hole through the first rotating shaft, so that the movable plate is rotatably connected with the main body.

6. The seat back for a vehicle of claim 5,

the locking mechanism is used for locking the second end part of the movable plate, so that the movable plate is completely hidden in the second groove;

the locking mechanism includes:

a locking boss disposed adjacent to the second end of the movable plate, the locking boss having a locking hole; and

the locking bin is positioned at one end, far away from the first fixing hole, of the second groove, a locking button mechanism and an elastic sheet are arranged at the locking bin, and the locking button mechanism is abutted to the locking bin through the elastic sheet;

the locking button mechanism is matched with the locking hole to fix or release the movable plate.

7. The seat back for a vehicle of claim 6,

the locking button mechanism includes:

one end of the locking button body is an inclined locking end, and the other end of the locking button body is provided with a first elastic piece inserting port; and

the operation plate is connected with the locking button body through a connecting part, and the size of the connecting part is smaller than that of the operation plate and the locking button body, so that a gap is formed between the operation plate and the locking button body;

the locking bin is provided with a first accommodating space for accommodating the locking button body and a second accommodating space for accommodating the operating plate;

the first accommodating space and the second accommodating space are blocked by a first partition wall, an avoiding hole is formed in the first partition wall, and the connecting part is located at the avoiding hole; the first accommodating space and the second groove are isolated by a second partition wall, a locking opening is formed in the second partition wall, a slope locking end of the locking button body penetrates through the locking opening from the first accommodating space to the second groove, and the slope locking end is matched with the locking hole at the second groove to fix or release the movable plate;

the first accommodating space is provided with a second elastic sheet inserting port at the side wall opposite to the second isolation wall, and the elastic sheet is abutted between the first elastic sheet inserting port and the second elastic sheet inserting port, so that the locking button mechanism has a tendency of moving away from the direction of the elastic sheet.

8. The seat back for a vehicle of claim 7,

the second accommodating space is positioned on the same side with the second groove, and the operating panel is exposed out of the second accommodating space;

and a plurality of anti-slip strips are arranged on one exposed side surface of the operating plate.

9. The seat back for a vehicle according to any one of claims 4 to 7,

one end of the supporting plate is provided with a second rotating shaft hole;

two second fixing holes which are oppositely arranged are formed in the middle positions of two oppositely arranged side walls of the second groove, and a second rotating shaft penetrates through the second rotating shaft holes and then is arranged in the second fixing holes on the two sides, so that the supporting plate is rotatably connected with the main body; the support plate is provided with lightening holes.

10. A vehicle comprising a seat and a seat back panel for a vehicle according to any one of claims 1 to 9, the seat back panel being detachably connected to the seat.

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