Seat table plate assembly, seat and vehicle

Abstract

The utility model provides a seat table plate assembly, a seat and a vehicle. The seat table plate assembly comprises a mounting frame, a table plate structure and a driving unit, wherein the table plate structure is arranged on the mounting frame in a sliding mode in the height direction of a seat backrest, and the driving unit is used for driving the table plate structure to slide relative to the mounting frame. The mounting frame is used for mounting the seat table plate assembly on a seat backrest, the driving unit comprises a driving part arranged on the mounting frame, a worm and gear mechanism and a transmission mechanism, the worm and gear mechanism and the transmission mechanism are arranged between the driving part and the table plate structure, and the table plate structure can be kept at the position after sliding through the worm and gear mechanism. According to the seat table plate assembly, the table plate structure can be automatically driven to slide up and down through the driving part, and the height of the table plate structure can be conveniently adjusted. Meanwhile, due to the arrangement of the worm and gear mechanism, the table plate structure can be automatically kept at the position after sliding through the self-locking function of the worm and gear mechanism, a positioning structure does not need to be arranged, adjustment is convenient, the structure is simple, and the table plate structure can have good stability.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a seat table assembly. At the same time, the utility model also relates to a seat provided with the seat table assembly, and a vehicle provided with the seat. Background Art

[0002] The seat table is an embodiment of the integrated functions of the seat, mainly used for placing some commonly used items, such as mobile phones, tablets, water cups, etc. It enables users to easily place and retrieve items without leaving their seats, reducing the frequency of getting up to retrieve items and improving the convenience of work and life. Moreover, in order to save space, the seat table can usually be flipped relative to the seat backrest to open when in use and fold up when not in use. However, the seat tables in the prior art usually cannot be adjusted in height according to the user's height, resulting in being inapplicable to users of different heights and being inconvenient to use. Although some existing seat tables can adjust their height, they usually have the disadvantages of cumbersome adjustment operations and complex structures. Summary of the Utility Model

[0003] In view of this, the utility model aims to propose a seat table assembly to facilitate the adjustment of the height of the table structure and improve the usability.

[0004] To achieve the above object, the technical solution of the utility model is realized as follows:

[0005] A seat table assembly includes a mounting bracket, a table structure slidably arranged on the mounting bracket along the height direction of the seat backrest, and a driving unit for driving the table structure to slide relative to the mounting bracket;

[0006] The mounting bracket is used to mount the seat table assembly on the seat backrest. The driving unit includes a driving part arranged on the mounting bracket, a worm and worm gear mechanism and a transmission mechanism arranged between the driving part and the table structure. The worm and worm gear mechanism can keep the table structure in the position after sliding.

[0007] Further, the mounting bracket includes a slide rail arranged along the height direction of the seat backrest;

[0008] The worm of the worm and worm gear mechanism is connected to the power output end of the driving part. The transmission mechanism includes a lead screw connected to the worm of the worm and worm gear mechanism, and a sliding body screwed on the lead screw. The sliding body is slidably arranged on the slide rail and connected to the table structure.

[0009] Further, the table structure includes a table body and a transmission unit arranged between the table body and the sliding body;

[0010] The tabletop body is driven to be able to rotate relative to the seat back through the transmission unit and switch between a folded state and an unfolded state.

[0011] Furthermore, the slide rail has a chute extending along its own length direction;

[0012] The sliding body includes a slider disposed in the chute and a sliding shell disposed on the slider. The sliding shell is constrained on the slide rail and can slide along the length direction of the slide rail. The transmission unit is disposed between the sliding shell and the tabletop body.

[0013] Furthermore, the transmission unit includes a first link and a second link. Both the first link and the second link are hinged to the sliding shell and the tabletop body and form a four-bar linkage.

[0014] Furthermore, the first link includes a first part and a second part arranged at an obtuse angle. The first part is hinged to the sliding shell, the second part is hinged to the tabletop body, and a limiting groove is provided on the second part;

[0015] The second link is in a "Z" shape and includes a first transverse part and a second transverse part arranged at intervals, and an inclined part disposed therebetween. The first transverse part is hinged to the sliding shell, the second transverse part is hinged to the tabletop body, and the end of the second transverse part can be inserted into the limiting groove to hold the tabletop body in the unfolded state.

[0016] Furthermore, the sliding shell includes a sliding shell body and a connecting frame disposed on the sliding shell body. The connecting frame has a main body part connected to the sliding shell body and a folding part folded towards the rear of the sliding shell body;

[0017] The first link and the second link are hinged to the folding part.

[0018] Furthermore, the mounting frame includes two slide rails arranged at intervals and a frame body connected between the two slide rails;

[0019] The driving part is disposed on the frame body, and the driving end of the driving part extends towards two opposite sides. Both the worm and worm gear mechanism and the transmission mechanism are two corresponding to the two slide rails one by one.

[0020] Compared with the prior art, the present utility model has the following advantages:

[0021] For the seat table assembly of the present utility model, by making the driving unit include a driving part and a worm and worm gear mechanism arranged between the driving part and the table structure, the table structure cannot be automatically driven by the driving part to slide up and down, which is convenient for adjusting its height. At the same time, the setting of the worm and worm gear mechanism can utilize its self-locking function to automatically keep the table structure in the position after sliding, without the need to set a positioning structure, thus facilitating the adjustment of the height of the table structure, with a relatively simple structure and enabling the table structure to have better stability.

[0022] In addition, the transmission mechanism includes a lead screw connected to the worm of the worm and worm gear mechanism and a slider screwed on the lead screw. The structure is simple, convenient for design and implementation, and at the same time, it can also enable the table structure to have a large sliding displacement, with a large adjustment space, and can be suitable for more people. The table body is driven to be able to rotate relative to the seat back through the transmission unit and switch between the folded state and the unfolded state. Thus, it will neither affect the use of the table body, and at the same time, when not in use, the table body can be folded up without occupying space.

[0023] Secondly, the transmission unit includes a first link and a second link that form a four-bar linkage with the sliding shell and the table body. The structure is simple and can have better transmission smoothness. The first link includes a first part and a second part arranged at an obtuse angle, and the second link is set in a "Z" shape, which can enable both the first link and the second link to have better structural strength, thereby improving the movement smoothness of the table body. The setting of the limit groove on the first link can enable the end of the second transverse part to be inserted, so as to maintain the stability of the table in the unfolded state.

[0024] In addition, by setting a connecting frame, it is convenient for the first link and the second link to be hinged to the sliding shell. The connecting frame includes a main body part and a folding part, which can make it have better structural strength, improve the setting stability of the first link and the second link, and thus improve the movement smoothness of the table body. The driving end of the driving part extends to two opposite sides, and both the worm and worm gear mechanism and the transmission mechanism are two corresponding to two slide rails respectively, which can improve the smoothness when the table structure slides up and down and further facilitate the adjustment of its height.

[0025] Another object of the present utility model is to provide a seat, on which the above-mentioned seat table assembly is provided.

[0026] By setting the above-mentioned seat table assembly on the seat of the present utility model, the height of the table structure can be adjusted according to the needs of different users, which can improve the convenience of using the seat.

[0027] In addition, the present utility model also provides a vehicle, on which the above-mentioned seat is provided.

[0028] The vehicle described in the present utility model has all the beneficial effects of the above-mentioned seat, which will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings forming a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0030] Figure 1 is an application state diagram of the seat table assembly according to the embodiment of the present utility model;

[0031] Figure 2 is a schematic structural diagram of the seat table assembly according to the embodiment of the present utility model;

[0032] Figure 3 is a schematic structural diagram of the seat table assembly according to the embodiment of the present utility model from another perspective;

[0033] Figure 4 is a schematic structural diagram of the seat table assembly according to the embodiment of the present utility model when the table structure is removed;

[0034] Figure 5 is Figure 4 a schematic structural diagram of the shown structure from another perspective;

[0035] Figure 6 is Figure 4 a schematic structural diagram of the shown structure from another perspective;

[0036] Figure 7 is Figure 6 an enlarged view of part A in

[0037] Figure 8 is a schematic structural diagram of the table structure according to the embodiment of the present utility model;

[0038] Figure 9 is a schematic structural diagram of the first connecting rod according to the embodiment of the present utility model;

[0039] Figure 10 is a schematic structural diagram of the second connecting rod according to the embodiment of the present utility model.

[0040] DESCRIPTION OF THE REFERENCE NUMERALS:

[0041] 1, table body; 2, driving part; 3, mounting bracket; 4, first connecting rod; 5, second connecting rod; 6, lead screw; 7, sliding housing; 8, slider;

[0042] 201, output shaft; 301, slide rail; 302, frame body;

[0043] 401. First part; 402. Second part; 4021. Limit groove

[0044] 501. First horizontal part; 502. Second horizontal part; 503. Oblique part

[0045] 701. Slide housing body; 702. Connecting frame Specific embodiments

[0046] It should be noted that, without conflict, the embodiments and features in the embodiments of the present utility model can be combined with each other.

[0047] In the description of the present utility model, it should be noted that the orientation words such as "up, down, left, right, front, back" used in this embodiment are defined based on the up - down direction, left - right direction and front - back direction of the vehicle. Among them, the up - down direction of the vehicle is also the height direction (Z - direction) of the vehicle, the front - back direction of the vehicle is also the length direction (X - direction) of the vehicle, and the left - right direction of the vehicle is also the width direction (Y - direction) of the vehicle. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0048] In addition, in the description of the present utility model, unless otherwise clearly defined, the terms "installation", "connection", "connection", "connector" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood in combination with the specific situation.

[0049] The present utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0050] The seat table boards in the prior art usually cannot be adjusted in height according to the height of the user, resulting in being inapplicable to users of different heights and being inconvenient to use. Although some existing seat table boards can adjust their heights, they usually have the disadvantages of cumbersome adjustment operations and complex structures.

[0051] For this reason, this embodiment proposes a new type of seat table board assembly. In terms of the overall composition, it includes an installation frame 3, a table board structure slidably arranged on the installation frame 3 along the height direction of the seat back, and a driving unit for driving the table board structure to slide relative to the installation frame 3.

[0052] Among them, the mounting bracket 3 is used to mount the seat table assembly on the seat backrest. The drive unit includes a drive part 2 provided on the mounting bracket 3, as well as a worm and worm gear mechanism and a transmission mechanism provided between the drive part 2 and the table structure. The worm and worm gear mechanism can hold the table structure in the position after sliding.

[0053] For the seat table assembly of this embodiment, by making the drive unit include the drive part 2 and the worm and worm gear mechanism provided between the drive part 2 and the table structure, not only can the table structure be automatically driven to slide up and down by the drive part 2, facilitating the adjustment of its height. At the same time, the setting of the worm and worm gear mechanism can utilize its self-locking function to automatically hold the table structure in the position after sliding, without the need to set a positioning structure, thus facilitating adjustment, having a relatively simple structure, and enabling the table structure to have better stability.

[0054] Based on the above overall introduction, an exemplary structure of the seat table structure of this embodiment is referred to Figure 1 in Figure 6 As shown in the figure, as a preferred implementation manner, the mounting bracket 3 includes a slide rail 301 arranged along the height direction of the seat backrest. The worm of the above worm and worm gear mechanism is connected to the power output end of the drive part 2. The transmission mechanism includes a lead screw 6 connected to the worm of the worm and worm gear mechanism, and a sliding body screwed on the lead screw 6. The sliding body slides on the slide rail and is connected to the table structure.

[0055] Among them, as a preferred embodiment, as Figures 4 to 6 shown in the figure, the mounting bracket 3 includes two slide rails 301 arranged at intervals, and a frame body 302 connected between the two slide rails 301. The drive part 2 is provided on the frame body 302, and the drive end of the drive part 2 extends towards two opposite sides. The worm and worm gear mechanism and the transmission mechanism are both two corresponding to the two slide rails 301 one by one. With such a setting, both sides of the table structure can be better supported, the smoothness of the up and down sliding of the table structure can be improved, and it is further convenient to adjust its height.

[0056] In addition, for the convenience of mounting the mounting bracket 3 on the seat backrest, as Figure 3 shown in the figure, the frame body 302 of this embodiment includes a middle part, and end parts detachably provided on both sides of the middle part. And the slide rail 301 is provided on the end part, and the mounting bracket 3 is specifically mounted on the seat backrest through the end part.

[0057] In the specific implementation, the driving part 2 can be a motor that outputs rotary power in the prior art. The output shaft 201 of the motor extends to both ends, and the output shaft 201 at each end is respectively connected to the worm gear mechanism at the corresponding end, and then drives the table structure to slide up and down through the lead screw and the slider 8. The worm gear mechanism is a conventional structure used by those skilled in the art, which includes a worm and a worm wheel that are connected in a transmission manner. The worm gear is usually used as an active part and can have a good self-locking effect, which can prevent the table structure from driving the worm wheel to reverse under the action of its own gravity, so that the table structure can be better kept in the position after sliding.

[0058] Specifically, if Figure 3 As shown in the figure, the driving part 2 of this embodiment, that is, the output shaft 201 of the motor, extends in the left-right direction of the seat. Therefore, the output shaft 201 of the motor is coaxially fixedly connected with the worm of the worm gear, thereby, the worm can be driven to rotate by the output shaft 201, thereby driving the worm wheel to rotate. In addition, the screw rod 6 of this embodiment is coaxially fixedly connected with the worm wheel, and a thread is provided on its outer surface. At the same time, the sliding body is provided with a threaded hole adapted to the screw rod 6, and is screwed on the screw rod 6, therefore, the rotation of the screw rod 6 can drive the slider 8 to drive the table structure to slide up and down.

[0059] In addition, as a preferred embodiment, the slide rail 301 has a slide groove extending along its length direction. The sliding body includes a slider 8 arranged in the slide groove, and a slide shell 7 arranged on the slider 8. Moreover, the slide shell 7 is constrained on the slide rail 301 and can slide along the length direction of the slide rail 301. The transmission unit is specifically arranged between the slide shell 7 and the table board body 1. Among them, the structure of the slide rail 301 and the slide shell 7 is a conventional structure adopted by vehicle seats, and its specific implementation can refer to the existing technology.

[0060] And, generally, if Figure 7 As shown in FIG. 1 , as a specific embodiment, the cross section of the slide rail 301 is in the shape of a Chinese character "几", and the above-mentioned slide groove is formed. At this time, in order to constrain the slide housing 7 on the slide rail 301, that is, to prevent the slide housing 7 from detaching from the slide rail 301, as shown in FIG. Figure 7 As shown in , the cross section of the sliding housing 7 of this embodiment is roughly U-shaped, and hooks bent inwardly are respectively provided at both ends thereof. The hooks are clamped on the slide rail 301, thereby preventing the sliding housing 7 from separating from the slide rail 301.

[0061] In addition, as a further embodiment, Figure 2As shown in the figure, the tabletop structure of this embodiment includes a tabletop body 1 and a transmission unit disposed between the tabletop body 1 and the slider 8. The tabletop body 1 is driven to rotate relative to the seat back through the transmission unit and switch between a folded state and an unfolded state. Among them, the specific structure of the tabletop body 1 can refer to the prior art. In addition, usually, a locking member is also provided between the tabletop body 1 and the seat back to lock the tabletop body 1 in the folded state on the seat back. Among them, the specific structure of the locking member can refer to the structure on the existing vehicle seat and will not be elaborated here.

[0062] In addition, in this embodiment, as a preferred embodiment, the transmission unit of this embodiment includes a first link 4 and a second link 5. Both the first link 4 and the second link 5 are hinged to the sliding body and the tabletop body 1 and form a four-bar linkage. By adopting a four-bar linkage for the transmission unit of this embodiment, its structure is simple, convenient for processing and manufacturing, and can have better transmission smoothness. And, as a further implementation manner, as Figure 7 shown in the figure, the transmission mechanisms of this embodiment are two groups disposed on two opposite sides of the tabletop body 1 to further improve the movement smoothness of the tabletop body 1.

[0063] More specifically, as Figure 9 shown in the figure, the first link 4 of this embodiment includes a first part 401 and a second part 402 arranged at an obtuse angle. The first part 401 is hinged to the sliding housing 7, the second part 402 is hinged to the tabletop body 1, and a limiting groove 4021 is provided on the second part 402. By adopting this structure for the first link 4 of this embodiment, it can have better structural strength, thereby being able to improve the movement smoothness of the tabletop body 1. Moreover, the setting of the limiting groove 4021 on the first link 4 can enable the end of the following second transverse part 502 to be inserted, so as to maintain the stability of the tabletop body 1 in the unfolded state.

[0064] And as Figure 10 shown in the figure, the second link 5 is in a "Z" shape and includes a first transverse part 501 and a second transverse part 502 arranged at intervals, and an inclined part 503 disposed between the two. And, the first transverse part 501 is hinged to the sliding housing 7, the second transverse part 502 is hinged to the tabletop body 1, and the end of the second transverse part 502 can be inserted into the limiting groove 4021 and keep the tabletop body 1 in the unfolded state. By adopting this structure for the second link 5 of this embodiment, it can have better structural strength, thereby being able to improve the movement smoothness of the tabletop body 1.

[0065] As a further implementation manner, as Figure 4As shown, the sliding housing 7 of this embodiment includes a sliding housing body 701 and a connecting frame 702 provided on the sliding housing body 701. The connecting frame 702 has a main body portion connected to the sliding housing body 701 and a folding portion that folds backward with respect to the sliding housing body 701. The above-mentioned first link 4 and second link 5 are specifically hinged to the folding portion. In this embodiment, by providing the connecting frame 702, it is convenient for the first link 4 and the second link 5 to be hinged to the sliding housing 7. The connecting frame 702 includes a main body portion and a folding portion, which can make it have better structural strength, improve the setting stability of the first link 4 and the second link 5, and thus improve the movement smoothness of the tabletop body 1.

[0066] Based on the above overall introduction, when the seat table assembly of this embodiment is in use, the structure for triggering the up and down sliding of the table structure can refer to the prior art, which is a conventional setting adopted in this field. For example, a switch connected to the vehicle control unit can be provided on the tabletop body 1 or other parts to send an opening signal to the vehicle control unit by triggering the switch, and then control the motor to drive the table structure to slide up and down to adjust to a suitable position.

[0067] The seat table assembly of this embodiment, by adopting the above structure, can automatically drive the table structure to slide up and down through the driving part 2, which is convenient for adjusting its height. At the same time, the self-locking function of the worm and worm gear mechanism can be utilized to automatically keep the table structure in the position after sliding, without the need to set a positioning structure, thus being convenient for adjustment, having a relatively simple structure, and enabling the table structure to have better stability.

[0068] In addition, another object of this embodiment is to propose a seat, on which the above-mentioned seat table assembly is provided.

[0069] The seat of this embodiment, by providing the above seat table assembly, can adjust the height of the table structure according to the needs of different users, and can improve the usability of the seat.

[0070] In addition, this embodiment also proposes a vehicle, on which the above-mentioned seat is provided.

[0071] The vehicle of this embodiment has all the beneficial effects of the above seat, which will not be elaborated here.

[0072] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A seat table assembly, characterized in that: It comprises a mounting frame (3), a tabletop structure slidably arranged on the mounting frame (3) along the height direction of the seat back, and a driving unit for driving the tabletop structure to slide relative to the mounting frame (3); The mounting frame (3) is used to mount the seat table assembly on the seat back, and the driving unit includes a driving part (2) arranged on the mounting frame (3), and a worm gear mechanism and a transmission mechanism arranged between the driving part (2) and the table structure, and the worm gear mechanism can keep the table structure in a position after sliding.

2. The seat table assembly according to claim 1, characterized in that: The mounting frame (3) comprises a slide rail (301) arranged along the height direction of the seat back; The worm of the worm gear mechanism is connected to the power output end of the driving part (2), and the transmission mechanism includes a screw (6) connected to the worm wheel of the worm gear mechanism, and a sliding body screwed on the screw (6), and the sliding body is slidably arranged on the slide rail (301) and connected to the table top structure.

3. The seat table assembly according to claim 2, characterized in that: The table top structure comprises a table top body (1), and a transmission unit arranged between the table top body (1) and the sliding body; The table board body (1) is driven to rotate relative to the seat back through the transmission unit and switch between a folding state and an unfolding state.

4. The seat table assembly according to claim 3, characterized in that: The slide rail (301) has a slide groove extending along its length direction; The sliding body includes a slider (8) arranged in the sliding groove, and a sliding shell (7) arranged on the slider (8); the sliding shell (7) is constrained on the sliding rail (301) and can slide along the length direction of the sliding rail (301); the transmission unit is arranged between the sliding shell (7) and the table top body (1).

5. The seat table assembly according to claim 4, characterized in that: The transmission unit comprises a first connecting rod (4) and a second connecting rod (5), wherein the first connecting rod (4) and the second connecting rod (5) are both hingedly connected to the sliding shell (7) and the table top body (1) to form a four-bar linkage.

6. The seat table assembly according to claim 5, characterized in that: The first connecting rod (4) comprises a first part (401) and a second part (402) arranged at an obtuse angle, the first part (401) being hinged to the sliding shell (7), the second part (402) being hinged to the table board body (1), and a limiting groove (4021) being provided on the second part (402); The second connecting rod (5) is in a "Z" shape and includes a first transverse portion (501) and a second transverse portion (502) that are spaced apart, and an oblique portion (503) disposed therebetween, wherein the first transverse portion (501) is hingedly connected to the sliding shell (7), and the second transverse portion (502) is hingedly connected to the table top body (1), and an end portion of the second transverse portion (502) can be inserted into the limiting groove (4021) to keep the table top body (1) in the unfolded state.

7. The seat table assembly according to claim 6, characterized in that: The sliding shell (7) comprises a sliding shell body (701) and a connecting frame (702) arranged on the sliding shell body (701), wherein the connecting frame (702) comprises a main body portion connected to the sliding shell body (701) and a folding portion folded toward the rear of the sliding shell body (701); The first connecting rod (4) and the second connecting rod (5) are hingedly connected to the folding part.

8. The seat table assembly according to any one of claims 2 to 7, characterized in that: The mounting frame (3) comprises two slide rails (301) arranged at an interval, and a frame body (302) connected between the two slide rails (301); The driving part (2) is arranged on the frame (302), and the driving end of the driving part (2) extends to two opposite sides, and the worm gear mechanism and the transmission mechanism are both arranged in a one-to-one correspondence with the two slide rails (301).

9. A seat, characterized in that: The seat is provided with a seat table assembly according to any one of claims 1 to 8.

10. A vehicle, characterized in that: The vehicle is provided with the seat according to claim 9.

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