Seat table device, seat, and vehicle

Abstract

The utility model relates to the field of the arrangement or configuration of passenger articles in vehicle, especially relates to a seat table board device, seat and vehicle. The seat table board device includes the mounting bracket and table board connected through the connecting mechanism, the connecting mechanism includes the outer sleeve and the connecting shaft installed in the outer sleeve, one end of connecting shaft extends to the outside of outer sleeve and is provided with the rotation -stop head, one of outer sleeve and rotation -stop head is located the mounting bracket, and the other is located the table board, and the rotation -stop head can rotate relative to the outer sleeve, the limiting sleeve that circumferential rotation -stop, axial reciprocating activity is installed in the one end of outer sleeve close to rotation -stop head, the one end away from rotation -stop head of limiting sleeve and outer sleeve between top mounting pressure spring, one of outer sleeve and rotation -stop head is provided with the limit tooth slot, and the other is provided with the limit tooth that can slip into and slip out the limit tooth slot when the table board rotates, and the limit tooth and limit tooth slot cooperation define the unfolded state of table board, and pressure spring provides the resistance required for the limit tooth to slip out of the limit tooth slot.

Description

Technical Field

[0001] This utility model relates to the field of passenger equipment arrangement or configuration in vehicles, and in particular to a seat table device, a seat, and a vehicle. Background Technology

[0002] Seat table devices, as accessories for seats, are increasingly being used in high-end vehicles. Existing seat table devices include a mounting frame and a table mounted on the mounting frame. The table and mounting frame are rotatably connected by a connecting shaft. A radially protruding limiting protrusion is provided on the connecting shaft, and a limiting groove corresponding to the limiting protrusion is provided on the mounting frame. One end of the limiting protrusion extends into the limiting groove and moves within the limiting groove as the table moves. By engaging with the end walls of the limiting groove, the table can be confined to a folded (table against the seat back) or open (table unfolded, capable of carrying items) state.

[0003] While the use of a limiting protrusion and a limiting groove can effectively limit the opening and folding of the table, the structural strength of these components cannot be infinitely increased due to space and other limitations. In practice, the table often has markings indicating its weight limit, but it's still difficult to avoid situations where passengers inadvertently press on the table or place overweight items on it. If the pressure or weight exceeds a certain value, the limiting protrusion may break or the limiting groove may be damaged, necessitating the replacement of the entire table assembly. This is not only costly but also affects passenger comfort before replacement. Utility Model Content

[0004] The purpose of this utility model is to provide a seat and table device to solve the problem that existing seat and table devices are easily damaged due to overload.

[0005] Meanwhile, the purpose of this utility model is also to provide a seat and vehicle using the above-mentioned seat and table device.

[0006] To solve the above problems, the chair / table device of this utility model adopts the following technical solution:

[0007] A seat / table assembly includes a mounting frame and a tabletop. The tabletop and the mounting frame are connected by a connecting mechanism. The connecting mechanism includes an outer sleeve and a connecting shaft mounted on the outer sleeve. One end of the connecting shaft extends beyond the outer sleeve and is provided with an anti-rotation head. One of the outer sleeve and the anti-rotation head is located on the mounting frame, and the other is located on the tabletop. The anti-rotation head is rotatable relative to the outer sleeve. A circumferentially anti-rotating and axially reciprocating limiting sleeve is installed at the end of the outer sleeve near the anti-rotation head. A compression spring is mounted between the end of the limiting sleeve away from the anti-rotation head and the outer sleeve. One of the outer sleeve and the anti-rotation head is provided with a limiting groove, and the other is provided with a limiting tooth that can slide into and out of the limiting groove when the tabletop rotates. The limiting tooth and the limiting groove cooperate to limit the unfolded state of the tabletop. The compression spring provides the resistance required for the limiting tooth to slide out of the limiting groove.

[0008] Furthermore, one side of the limiting tooth groove is also provided with an anti-crushing tooth groove for the limiting tooth to slide in and out. The anti-crushing tooth groove is used to allow the limiting tooth to engage after the table is pressed down past the unfolded position, thus limiting the table to an inclined posture.

[0009] Furthermore, a partition tooth is formed between the limiting tooth groove and the anti-crushing tooth groove, wherein the limiting tooth and / or the partition tooth is an oblique tooth, so that the resistance of the limiting tooth from the limiting tooth groove to the anti-crushing tooth groove is greater than the resistance from the anti-crushing tooth groove to the limiting tooth groove.

[0010] Furthermore, the limiting tooth is a helical tooth, or the limiting tooth groove is a helical groove, to reduce the resistance when the table is converted from the open state to the folded state.

[0011] Furthermore, the anti-rotation head and the connecting shaft are in rotational engagement.

[0012] Furthermore, the anti-rotation head is inserted into the mounting bracket or table, and an outer guide slope is provided at the end of the anti-rotation head away from the outer sleeve to guide the anti-rotation head into the mounting bracket or table.

[0013] Furthermore, the connecting shaft is provided with an external thread section, and an adjusting nut is installed on the external thread section. The adjusting nut is engaged with the end of the outer sleeve away from the anti-rotation head, and the elastic force of the compression spring can be adjusted by adjusting the adjusting nut.

[0014] Furthermore, the outer sleeve is inserted into the mounting bracket or table, and an anti-rotation structure is provided on the outer sleeve for anti-rotation engagement with the mounting bracket or table.

[0015] Beneficial effects of the seat / table device: This utility model's seat / table device is an improved invention. The device connects the tabletop to the mounting frame via a connecting mechanism. Since one of the outer sleeve and the anti-rotation head of the connecting mechanism is located on the mounting frame and the other on the tabletop, the anti-rotation head can rotate relative to the outer sleeve. A circumferentially anti-rotation, axially reciprocating limiting sleeve is installed at the end of the outer sleeve near the anti-rotation head. A compression spring is mounted between the end of the limiting sleeve away from the anti-rotation head and the outer sleeve. One of the outer sleeve and the anti-rotation head has a limiting groove, and the other has a limiting tooth that can slide into and out of the limiting groove when the tabletop rotates. In use, when the tabletop is fully extended, it is in a water-resistant position. In the flat position, the limiting tooth is inserted into the limiting tooth groove along the axial direction of the outer sleeve. The limiting tooth and the limiting tooth groove cooperate to limit the unfolded state of the table. At this time, the compression spring provides the resistance required for the limiting tooth to slide out of the limiting tooth groove. When the force applied to the table exceeds the allowable value, the compression spring can be compressed due to the cooperation between the limiting tooth and the corresponding side groove wall of the limiting tooth groove, and the limiting tooth slides out of the limiting groove (this process is similar to the principle of a cam mechanism). The table can continue to rotate relative to the mounting frame without damaging the table and the mounting frame, and the connecting mechanism itself will not be damaged, thus solving the problem that existing seat table devices are easily damaged due to overload.

[0016] The seat of this utility model adopts the following technical solution:

[0017] A seat includes a seat frame with a seat table assembly. The seat table assembly includes a mounting frame and a table. The table and the mounting frame are connected by a connecting mechanism. The connecting mechanism includes an outer sleeve and a connecting shaft mounted on the outer sleeve. One end of the connecting shaft extends beyond the outer sleeve and is provided with an anti-rotation head. One of the outer sleeve and the anti-rotation head is located on the mounting frame, and the other is located on the table. The anti-rotation head is rotatable relative to the outer sleeve. A circumferentially anti-rotating and axially reciprocating limiting sleeve is installed at the end of the outer sleeve near the anti-rotation head. A compression spring is mounted between the end of the limiting sleeve away from the anti-rotation head and the outer sleeve. One of the outer sleeve and the anti-rotation head is provided with a limiting groove, and the other is provided with a limiting tooth that can slide into and out of the limiting groove when the table rotates. The limiting tooth and the limiting groove cooperate to limit the unfolded state of the table. The compression spring provides the resistance required for the limiting tooth to slide out of the limiting groove.

[0018] Furthermore, one side of the limiting tooth groove is also provided with an anti-crushing tooth groove for the limiting tooth to slide in and out. The anti-crushing tooth groove is used to allow the limiting tooth to engage after the table is pressed down past the unfolded position, thus limiting the table to an inclined posture.

[0019] Furthermore, a partition tooth is formed between the limiting tooth groove and the anti-crushing tooth groove, wherein the limiting tooth and / or the partition tooth is an oblique tooth, so that the resistance of the limiting tooth from the limiting tooth groove to the anti-crushing tooth groove is greater than the resistance from the anti-crushing tooth groove to the limiting tooth groove.

[0020] Furthermore, the limiting tooth is a helical tooth, or the limiting tooth groove is a helical groove, to reduce the resistance when the table is converted from the open state to the folded state.

[0021] Furthermore, the anti-rotation head and the connecting shaft are in rotational engagement.

[0022] Furthermore, the anti-rotation head is inserted into the mounting bracket or table, and an outer guide slope is provided at the end of the anti-rotation head away from the outer sleeve to guide the anti-rotation head into the mounting bracket or table.

[0023] Furthermore, the connecting shaft is provided with an external thread section, and an adjusting nut is installed on the external thread section. The adjusting nut is engaged with the end of the outer sleeve away from the anti-rotation head, and the elastic force of the compression spring can be adjusted by adjusting the adjusting nut.

[0024] Furthermore, the outer sleeve is inserted into the mounting bracket or table, and an anti-rotation structure is provided on the outer sleeve for anti-rotation engagement with the mounting bracket or table.

[0025] Furthermore, the seat support is provided with a table support that is independent of the seat back, and the seat table device is installed on the table support.

[0026] Beneficial effects of the seat: This utility model of the seat is an improved invention. The seat table device connects the table to the mounting frame via a connecting mechanism. Since one of the outer sleeve and the anti-rotation head of the connecting mechanism is located on the mounting frame and the other on the table, the anti-rotation head can rotate relative to the outer sleeve. A circumferentially anti-rotation, axially reciprocating limiting sleeve is installed at the end of the outer sleeve near the anti-rotation head. A compression spring is mounted between the end of the limiting sleeve away from the anti-rotation head and the outer sleeve. One of the outer sleeve and the anti-rotation head is provided with a limiting groove, and the other is provided with a limiting tooth that can slide into and out of the limiting groove when the table rotates. In use, when the table is unfolded to its full position, i.e., horizontal... When in position, the limiting tooth is inserted into the limiting tooth groove along the axial direction of the outer sleeve. The limiting tooth and the limiting tooth groove cooperate to limit the unfolded state of the table. At this time, the compression spring provides the resistance required for the limiting tooth to slide out of the limiting tooth groove. When the force applied to the table exceeds the allowable value, the compression spring can be compressed due to the cooperation between the limiting tooth and the corresponding side groove wall of the limiting tooth groove, and the limiting tooth slides out of the limiting groove (this process is similar to the principle of a cam mechanism). The table can continue to rotate relative to the mounting frame without damaging the table and the mounting frame, and the connecting mechanism itself will not be damaged, thus solving the problem that existing seat table devices are easily damaged due to overload.

[0027] The vehicle of this utility model adopts the following technical solution:

[0028] A vehicle includes a seat, the seat including a seat frame, a seat table assembly mounted on the seat frame, the seat table assembly including a mounting frame and a table, the table and the mounting frame being connected by a connecting mechanism, the connecting mechanism including an outer sleeve and a connecting shaft mounted on the outer sleeve, one end of the connecting shaft extending beyond the outer sleeve and having an anti-rotation head, one of the outer sleeve and the anti-rotation head being located on the mounting frame, and the other on the table, the anti-rotation head being rotatable relative to the outer sleeve, a circumferentially anti-rotating, axially reciprocating limiting sleeve being mounted on the end of the outer sleeve near the anti-rotation head, a compression spring being abutted between the end of the limiting sleeve opposite to the anti-rotation head and the outer sleeve, one of the outer sleeve and the anti-rotation head having a limiting tooth groove, the other having a limiting tooth that can slide into and out of the limiting tooth groove when the table rotates, the limiting tooth cooperating with the limiting tooth groove to limit the unfolded state of the table, the compression spring providing the resistance required for the limiting tooth to slide out of the limiting tooth groove.

[0029] Furthermore, one side of the limiting tooth groove is also provided with an anti-crushing tooth groove for the limiting tooth to slide in and out. The anti-crushing tooth groove is used to allow the limiting tooth to engage after the table is pressed down past the unfolded position, thus limiting the table to an inclined posture.

[0030] Furthermore, a partition tooth is formed between the limiting tooth groove and the anti-crushing tooth groove, wherein the limiting tooth and / or the partition tooth is an oblique tooth, so that the resistance of the limiting tooth from the limiting tooth groove to the anti-crushing tooth groove is greater than the resistance from the anti-crushing tooth groove to the limiting tooth groove.

[0031] Furthermore, the limiting tooth is a helical tooth, or the limiting tooth groove is a helical groove, to reduce the resistance when the table is converted from the open state to the folded state.

[0032] Furthermore, the anti-rotation head and the connecting shaft are in rotational engagement.

[0033] Furthermore, the anti-rotation head is inserted into the mounting bracket or table, and an outer guide slope is provided at the end of the anti-rotation head away from the outer sleeve to guide the anti-rotation head into the mounting bracket or table.

[0034] Furthermore, the connecting shaft is provided with an external thread section, and an adjusting nut is installed on the external thread section. The adjusting nut is engaged with the end of the outer sleeve away from the anti-rotation head, and the elastic force of the compression spring can be adjusted by adjusting the adjusting nut.

[0035] Furthermore, the outer sleeve is inserted into the mounting bracket or table, and an anti-rotation structure is provided on the outer sleeve for anti-rotation engagement with the mounting bracket or table.

[0036] Furthermore, the seat support is provided with a table support that is independent of the seat back, and the seat table device is installed on the table support.

[0037] Beneficial effects of the vehicle: This utility model is an improved invention. In the vehicle's seat, the seat table assembly connects the table to the mounting frame via a connecting mechanism. Since one of the outer sleeve and the anti-rotation head of the connecting mechanism is located on the mounting frame and the other on the table, the anti-rotation head can rotate relative to the outer sleeve. A circumferentially anti-rotation, axially reciprocating limiting sleeve is installed at the end of the outer sleeve near the anti-rotation head. A compression spring is mounted between the end of the limiting sleeve away from the anti-rotation head and the outer sleeve. One of the outer sleeve and the anti-rotation head has a limiting groove, and the other has a limiting tooth that can slide into and out of the limiting groove when the table rotates. In use, when the table is fully extended, i.e. When in the horizontal position, the limiting tooth is inserted into the limiting tooth groove along the axial direction of the outer sleeve. The limiting tooth and the limiting tooth groove cooperate to limit the unfolded state of the table. At this time, the compression spring provides the resistance required for the limiting tooth to slide out of the limiting tooth groove. When the force applied to the table exceeds the allowable value, the compression spring can be compressed due to the cooperation between the limiting tooth and the corresponding side groove wall of the limiting tooth groove, and the limiting tooth slides out of the limiting groove (this process is similar to the principle of a cam mechanism). The table can continue to rotate relative to the mounting frame without damaging the table and the mounting frame, and the connecting mechanism itself will not be damaged, thus solving the problem that existing seat table devices are easily damaged due to overload. Attached Figure Description

[0038] Figure 1 This is a structural schematic diagram of one embodiment of the seat of this utility model;

[0039] Figure 2 yes Figure 1 A close-up view of the seat and table assembly;

[0040] Figure 3 yes Figure 2 A structural diagram showing the connection point between the tabletop and the mounting bracket.

[0041] Figure 4 yes Figure 3 Perspective view of the connecting mechanism;

[0042] Figure 5 yes Figure 3 Main view of the connecting mechanism;

[0043] Figure 6 yes Figure 5 AA section view;

[0044] Figure 7 This is a schematic diagram showing the connection between the anti-rotation head and the limit sleeve of the connecting mechanism.

[0045] In the diagram: 1. Tabletop; 2. Mounting bracket; 3. Connecting mechanism; 301. Outer sleeve; 302. Connecting shaft; 303. Anti-rotation head; 304. Limiting sleeve; 305. Limiting tooth groove; 306. Limiting tooth; 307. Compression spring; 308. Anti-collapse tooth groove; 309. Spacer tooth; 310. Guide slope; 311. Adjusting nut; 4. Seat bracket; 5. Tabletop bracket. Detailed Implementation

[0046] The features and performance of this utility model will be further described in detail below with reference to specific embodiments.

[0047] To allow table 1 to fold (table folded up, roughly vertical) and unfold (table lowered, roughly horizontal) relative to the mounting frame 2 after connection, table 1 and mounting frame 2 should be connected by a hinge. A limiting structure should be provided to restrict the swing angle of table 1, ensuring it remains in the unfolded state. While using fixed limiting blocks and grooves in the limiting structure can limit the swing angle of table 1, overloading will damage the limiting blocks and / or grooves, necessitating the replacement of both table 1 and mounting frame 2. This not only increases costs but also affects the normal use of the vehicle, lowering its overall quality. This utility model connects the tabletop 1 and the mounting frame 2 through a connecting mechanism. In the normal state, that is, when the tabletop 1 is not overloaded, the connecting mechanism can lock the tabletop 1 in the unfolded state. When the tabletop 1 is overloaded, it can continue to flip down in the unfolded state (equivalent to being crushed) by relying on the relative rotation between its own components, thereby protecting the tabletop 1 and the mounting frame 2. After being crushed, the tabletop 1 only needs to be flipped up with manual assistance to restore its normal working state.

[0048] Based on the above inventive concept, the specific implementation of the chair / table device of this utility model is as follows:

[0049] The chair / table assembly includes a mounting frame 2 and a tabletop 1. The connecting mechanism 3 between the tabletop 1 and the mounting frame 2 includes an outer sleeve 301 and a connecting shaft 302 mounted on the outer sleeve 301. One end of the connecting shaft 302 extends beyond the outer sleeve 301 and is provided with an anti-rotation head 303, which is rotatable relative to the outer sleeve 301. In use, one of the outer sleeve 301 and the anti-rotation head 303 can be located on the mounting frame 2, and the other on the tabletop 1, for example... Figure 1-7In the illustrated embodiment, the outer sleeve 301 is mounted on the tabletop 1, and the anti-rotation head 303 is mounted on the mounting bracket 2. The outer sleeve 301 is inserted into the corresponding mounting hole on the tabletop 1, and the anti-rotation head 303 is inserted into the corresponding mounting hole on the mounting bracket 2. When the tabletop 1 rotates relative to the mounting bracket 2, the anti-rotation head 303 rotates relative to the outer sleeve 301. Although in Figure 1-7 In the embodiment shown, the outer sleeve 301 and the tabletop 1 adopt an assembled structure. However, in other embodiments, the outer sleeve 301 can also be integrated with the tabletop 1. Similarly, the anti-rotation head 303 can also be integrated with the mounting bracket 2.

[0050] To control the relative rotation between the anti-rotation head 303 and the outer sleeve 301, so that the tabletop 1 can be locked in the unfolded state, a circumferentially anti-rotation, axially reciprocating limiting sleeve 304 is installed at one end of the outer sleeve 301 near the anti-rotation head 303. A limiting groove 305 is provided on the end face of the limiting sleeve 304 near the anti-rotation head, and a limiting tooth 306 corresponding to the limiting groove 305 is provided on the anti-rotation head 303. When the limiting sleeve 304 moves axially toward the anti-rotation head, and the limiting tooth 306 is aligned with the limiting groove 305, the limiting tooth 306 can be engaged in the limiting groove 305, realizing the anti-rotation engagement between the limiting sleeve 304 and the anti-rotation head 303. Since the limiting sleeve 304 and the outer sleeve 301 also have an anti-rotation engagement, the above-mentioned anti-rotation engagement actually realizes the anti-rotation engagement between the anti-rotation head 303 and the outer sleeve 301, locking the tabletop 1 in the unfolded state.

[0051] To prevent the anti-rotation head 303 and the limiting sleeve 304 from being "absolutely jammed" and to allow them to rotate relative to each other when needed, such as allowing the tabletop 1 to fold upwards or to fold downwards to adapt to overload, the limiting tooth 306 should be able to slide into and out of the corresponding limiting tooth groove 305 when the tabletop 1 rotates. Furthermore, the force applied to the limiting sleeve 304 to drive it closer to the anti-rotation head 303 should be flexible. Therefore, a compression spring 307 is mounted on top of the end of the limiting sleeve 304 away from the anti-rotation head and the outer sleeve 301. The limiting tooth and the limiting tooth groove cooperate to limit the unfolded state of the tabletop 1, and the compression spring 307 provides the resistance required for the limiting tooth 306 to slide out of the limiting tooth groove 305. By simply matching the resistance to the allowable load of the tabletop, the tabletop 1 can achieve the following functions: When not overloaded, the compression spring 307 provides a force for the limiting sleeve 304 to move towards the anti-rotation head, and the limiting tooth 306 is locked in the corresponding limiting tooth groove 305 to maintain a stable position. When overloaded, the inclined surfaces between the limiting tooth 306 and the limiting tooth groove 305 will interact to generate a force that drives the limiting sleeve 304 to retract. When the magnitude of this force is greater than the elastic force of the compression spring 307, the compression spring 307 will be compressed. At this time, the limiting tooth 306 will slide out of the limiting tooth groove 305, and the locking of the tabletop 1 will also fail accordingly. The tabletop 1 will tip over under the load. Once the overload force is removed, pull the tabletop 1 upwards, and the limiting tooth 306 will return to the limiting tooth groove 305, locking the tabletop 1 in its unfolded state. In this state, if you continue to pull the tabletop 1 upwards, the limiting tooth 306 will slide out of the limiting tooth groove 305, unlocking the tabletop 1, at which point the tabletop 1 can be folded.

[0052] To prevent the tabletop 1 from tipping directly to a vertical position after losing the restraints of the anti-rotation head 303 and the limiting sleeve 304, which could cause items to fall or passengers to suddenly lose all support, as a preferred embodiment, one side of the limiting tooth groove 305 is also provided with an anti-collision tooth groove 308 for the limiting tooth to slide into and out. The anti-collision tooth groove 308 is used to allow the limiting tooth 306 to engage after the tabletop has been pressed down past the unfolded position, thus limiting the tabletop to an inclined posture. The anti-collision tooth groove 308 can adopt the same structure as the limiting tooth groove 305. In practical applications, the number of anti-collision tooth grooves 308, in addition to the above, may vary. Figure 7 Besides the one shown, there can also be two, three or more, which will not be elaborated here.

[0053] When the anti-crushing groove 308 is provided, considering that the tabletop 1 should more easily return to the unfolded position from the crushed position (where the limiting tooth is located in the anti-crushing groove), as a more preferred embodiment, a spacer tooth 309 can be formed between the limiting groove 305 and the anti-crushing groove 308. The limiting tooth and / or the spacer tooth are helical teeth, so that the resistance of the limiting tooth 306 from the limiting groove 305 to the anti-crushing groove 308 is greater than the resistance from the anti-crushing groove 308 to the limiting groove 305. Helical teeth refer to teeth with different inclinations on their two sides. In the case of the seat / tabletop device of this utility model, the inclination of the tooth surface of the spacer tooth 309 on the side near the limiting groove should be greater than the inclination of the tooth surface on the other side, and the inclination of the tooth surface of the limiting tooth on the side near the anti-crushing groove should be greater than the inclination of the tooth surface on the other side.

[0054] In order to reduce the resistance during the transition of the tabletop 1 from the unfolded state to the folded state, the limiting tooth 306 is set as a helical tooth, or the limiting tooth groove 305 is a helical groove. The limiting tooth groove is a helical groove, which means that the slope of the groove wall on one side is greater than the slope of the groove wall on the other side. Specifically, when the tabletop 1 is in the unfolded state, the slope of the groove wall that blocks the tabletop 1 is greater than the slope of the groove wall on the other side.

[0055] To prevent the anti-rotation head 303 from rotating together with the connecting shaft and affecting the arrangement of the compression spring, in a preferred embodiment, the anti-rotation head and the connecting shaft are rotatably coupled. Of course, those skilled in the art will understand that in other embodiments, the anti-rotation head and the connecting shaft can also be integrated.

[0056] exist Figure 1-7 In the illustrated embodiment, the anti-rotation head 303 and the mounting bracket 2 are inserted into each other. To facilitate insertion, an outer guide slope 310 is provided at the end of the anti-rotation head 303 away from the outer sleeve 301 to guide the anti-rotation head into the mounting bracket 2. Of course, in other embodiments, the anti-rotation head 303 can also be inserted into the tabletop 1, in which case the above structure can still be used. Similarly, the outer sleeve 301 can also be inserted into the mounting bracket 2 or the tabletop 1, and an anti-rotation structure is provided on the outer sleeve 301 for anti-rotation engagement with the mounting bracket 2 or the tabletop 1.

[0057] Furthermore, the connecting shaft 302 is provided with an external thread section, on which an adjusting nut 311 is installed. The adjusting nut 311 engages with the end of the outer sleeve 301 furthest from the anti-rotation head, and the elastic force of the compression spring 307 can be adjusted by adjusting the adjusting nut 311. For example, when it is necessary to increase the elastic force of the compression spring 307, the connecting shaft 302 can be pulled outward by rotating the adjusting nut 311. The connecting shaft 302 will then apply the same tension to the anti-rotation head 303 and the limiting sleeve 304, further compressing the compression spring 307, thereby increasing its elastic force. When it is necessary to decrease the elastic force, the adjusting nut can be rotated in the opposite direction.

[0058] The specific implementation method of the seat of this utility model is as follows:

[0059] The seat includes a seat support 4, on which a seat table device is mounted. This seat table device is the one described in this utility model. Since the structure and usage of the seat table device have already been described in detail above, they will not be repeated here. It should be noted that the seat support 4 has a separate table support 5 relative to the seat back, and the seat table device is mounted on the table support 5. Of course, in other embodiments, the seat table device can also be mounted directly on the seat back frame, which will also not be elaborated here.

[0060] The specific implementation method of the vehicle according to this utility model is as follows:

[0061] The vehicle includes a seat, which is the seat of this utility model, and will not be described in detail here.

[0062] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. The patent protection scope of the present utility model shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present utility model shall also be included within the protection scope of the present utility model.

Claims

1. A chair / table assembly, comprising a mounting frame and a table, characterized in that, The tabletop and the mounting frame are connected by a connecting mechanism, which includes an outer sleeve and a connecting shaft mounted on the outer sleeve. One end of the connecting shaft extends beyond the outer sleeve and is provided with an anti-rotation head. One of the outer sleeve and the anti-rotation head is located on the mounting frame, and the other is located on the tabletop. The anti-rotation head can rotate relative to the outer sleeve. A circumferentially anti-rotation, axially reciprocating limit sleeve is installed at the end of the outer sleeve near the anti-rotation head. A compression spring is mounted between the end of the limit sleeve away from the anti-rotation head and the outer sleeve. One of the outer sleeve and the anti-rotation head is provided with a limit groove, and the other is provided with a limit tooth that can slide into and out of the limit groove when the tabletop rotates. The limit tooth and the limit groove cooperate to limit the unfolded state of the tabletop. The compression spring provides the resistance required for the limit tooth to slide out of the limit groove.

2. The chair / table device according to claim 1, characterized in that, One side of the limiting tooth groove is also provided with an anti-crushing tooth groove for the limiting tooth to slide in and out. The anti-crushing tooth groove is used to allow the limiting tooth to engage after the table is pressed down past the unfolded position, thus limiting the table to an inclined posture.

3. The chair / table device according to claim 2, characterized in that, A partition tooth is formed between the limiting tooth groove and the anti-crushing tooth groove, wherein the limiting tooth and / or the partition tooth is an oblique tooth, so that the resistance of the limiting tooth from the limiting tooth groove to the anti-crushing tooth groove is greater than the resistance from the anti-crushing tooth groove to the limiting tooth groove.

4. The chair / table device according to claim 1, 2, or 3, characterized in that, The limiting teeth are helical teeth, or the limiting tooth grooves are helical grooves, to reduce the resistance when the table is converted from an open state to a folded state.

5. The chair / table device according to claim 1, 2, or 3, characterized in that, The anti-rotation head and the connecting shaft are in rotational engagement.

6. The chair / table device according to claim 1, 2, or 3, characterized in that, The anti-rotation head is inserted into the mounting bracket or table, and an outer guide slope is provided at the end of the anti-rotation head away from the outer sleeve to guide the anti-rotation head into the mounting bracket or table.

7. The chair / table device according to claim 1, 2, or 3, characterized in that, The connecting shaft is provided with an external thread section, and an adjusting nut is installed on the external thread section. The adjusting nut is engaged with the end of the outer sleeve away from the anti-rotation head, and the elastic force of the compression spring can be adjusted by adjusting the adjusting nut.

8. The chair / table device according to claim 1, 2, or 3, characterized in that, The outer sleeve is inserted into the mounting bracket or table, and an anti-rotation structure is provided on the outer sleeve for anti-rotation engagement with the mounting bracket or table.

9. A seat, comprising a seat frame, wherein a seat table device is provided on the seat frame, characterized in that, The seat / table device is the seat / table device according to any one of claims 1-8.

10. The seat according to claim 9, characterized in that, The seat frame is provided with a table support that is independent of the seat back, and the seat table device is installed on the table support.

11. A vehicle, including a seat, characterized in that, The seat is the seat as described in claim 10.

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