Leg support structure, seat and vehicle

Abstract

The utility model provides a leg support structure, a seat and a vehicle, the leg support structure comprises a leg support supporting assembly and a front leg support pushing assembly, the front leg support pushing assembly comprises a front leg support pushing support, a supporting face part and a driving mechanism, and the front leg support pushing assembly is connected with the leg support supporting assembly. The front leg support pushing support is connected with the leg support supporting assembly, the face supporting part is installed on the front leg support pushing support, and the driving mechanism is movably connected with the face supporting part and used for driving the supporting face of the face supporting part to be switched between the concave state and the flat plate state. The supporting face of the front leg pushing support can be sunken or flattened according to the specific requirements of a user, so that the supporting angle of the supporting face of the front leg pushing support is adjusted according to the requirements of the user, and the sitting comfort of the user is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile seats, in particular to a leg rest structure, a seat with the same and a vehicle. BACKGROUND

[0002] In modern society, people's requirements for the comfort of car riding continue to rise. Generally, most car seats are designed with a leg rest, which aims to effectively support the legs of a person, thereby improving the comfort of the user's ride.

[0003] However, in the related art, the leg rest support surface structure of the car seat is fixed, and the support surface of the user's seat leg rest is insufficient to support the legs of a person, affecting the comfort of the user's ride in the car. CONTENT OF THE UTILITY MODEL

[0004] Therefore, the present application provides a leg rest structure with a concave support surface to at least solve the problem that the leg rest support surface structure of the current car seat is fixed, the support surface of the user's seat leg rest is insufficient to support the legs of a person, and the comfort of the user's ride in the car is affected.

[0005] To achieve the above-mentioned purpose, the technical solution of the present application is as follows:

[0006] The present application provides a leg rest structure, which comprises a leg rest support assembly and a front push leg rest assembly; the front push leg rest assembly is connected with the leg rest support assembly; the front push leg rest assembly comprises a front push leg rest support, a support surface component and a driving mechanism; the front push leg rest support is connected with the leg rest support assembly, the support surface component is installed on the front push leg rest support, and the driving mechanism is movably connected with the support surface component and used to drive the support surface of the support surface component to switch between a concave state and a flat state, wherein the concave state is that the support surface of the support surface component is concave towards the front push leg rest support.

[0007] Optionally, the support surface component comprises at least two mounting units and at least one movable unit; the movable unit has a support surface; the mounting units are spaced apart and fixedly installed on the front push leg rest support; one movable unit is movably connected with two mounting units; the driving mechanism is movably connected with the movable unit and used to drive the support surface of the movable unit to switch between the concave state and the flat state.

[0008] Optionally, the mounting unit comprises a first support part and two first mounting arms; two ends of the first support part are connected with one first mounting arm respectively; the first support part is mounted on the front push leg support in a first direction (X), and the first mounting arms are away from the front push leg support; one end of the first mounting arm away from the front push leg support is provided with a first through hole; the movable unit is movably connected with the first through hole.

[0009] Optionally, the number of the mounting units comprises at least three, and the at least three mounting units are arranged side by side on the front push leg support; the movable unit comprises at least two; each movable unit is mounted between and movably connected with two adjacent mounting units.

[0010] Optionally, the first mounting arm of the mounting unit in the middle position is a triangle, one side of the triangle is connected with the first support part; the connecting part of the mounting unit on the two sides is a rectangle; the mounting unit on the two sides further comprises a second support part, the second support part is connected with the first support part, two first mounting arms away from the side of the mounting unit in the middle position respectively.

[0011] Optionally, the movable unit comprises two movable pieces and a connecting rod; one end of the connecting rod is movably connected with two movable pieces respectively, and the other end of the two movable pieces is movably connected with two mounting units respectively; the connecting rod is movably connected with the driving mechanism; the driving mechanism drives the connecting rod to move, and the connecting rod drives the two movable pieces to rotate towards the front push leg support to form a concave state, or drives the two movable pieces to rotate away from the front push leg support to form a flat state.

[0012] Optionally, the movable piece comprises two second mounting arms and a flat part; two ends of the flat part are connected with one second mounting arm respectively; the second mounting arm comprises a first connecting end and a second connecting end in a second direction (Y); the first connecting end is provided with a second through hole, and the second connecting end is provided with a third through hole; the second through holes of the two movable pieces on the same side in the second direction (Y) overlap and penetrate into the connecting rod; the third through holes of the two movable pieces on the same side in the second direction (Y) are movably connected with two mounting units respectively.

[0013] Optionally, the first connecting end extends in the second direction (Y) away from the second connecting end in the plane of the second mounting arm; and the second connecting end extends in the plane of the second mounting arm away from the first connecting end and the flat part.

[0014] Optionally, the connecting rod comprises a movable rod, a turning connecting piece and a connecting sheet; the end of the movable rod penetrates into the second through hole and is movably connected with the second through hole; the turning connecting piece is fixedly connected with the movable rod along the second direction (Y), and a fifth through hole is arranged on the side of the turning connecting piece away from the movable rod; the two ends of the connecting sheet are provided with fourth through holes, one of which is movably connected with the fifth through hole; the other fourth through hole is movably connected with the driving mechanism.

[0015] Optionally, the driving mechanism comprises a sliding assembly and a driving assembly; the driving assembly is fixedly installed on the front push leg support bracket and movably connected with the sliding assembly; the sliding assembly is movably connected with the support surface component.

[0016] Optionally, the sliding assembly comprises a sliding piece and a sliding groove; the driving assembly is provided with a screw rod along the first direction (X); the sliding groove is fixedly installed on the front push leg support bracket along the first direction (X) and provided with limiting portions on the two sides; the sliding piece is provided with a screw hole for the screw rod to penetrate through and clamping portions on the two sides of the screw hole along the second direction (Y), one end of the clamping portion is clamped with the limiting portion, and the other end of the clamping portion is movably connected with the support surface component.

[0017] Optionally, the clamping portion further has two connecting arms extending towards the two ends along the second direction (Y); the ends of the two connecting arms are respectively movably connected with two parts of the support surface component, so as to drive the two parts of the support surface component to switch between the recessed state and the flat state.

[0018] Optionally, the leg support structure further comprises a massage air bag; the massage air bag is installed on the support surface of the support surface component.

[0019] Optionally, the leg support structure further comprises a leg support fixing piece and a rotating leg support; the rotating leg support and the front push leg support assembly are respectively connected with the leg support fixing piece.

[0020] The application further provides a seat comprising the leg support structure.

[0021] The application further provides a vehicle comprising the leg support structure or the seat.

[0022] Compared with the related art, the leg support structure, the seat and the vehicle have the following advantages:

[0023] The leg support structure provided in the application, by setting the support surface of the front pushing leg support as a concave structure, the user can control the support surface of the front pushing leg support to switch between the concave state and the flat state according to the specific needs, so as to adjust the support angle of the leg support surface according to the user's needs, and improve the comfort of the user riding the car. In the related art, the leg support surface structure is fixed, and the user cannot adjust the support angle of the leg support according to the needs, which leads to insufficient support force of the seat leg support surface to the leg, affecting the user's riding experience. The user can control the support surface of the front pushing leg support assembly to switch between the concave state and the flat state by adjusting the driving mechanism, so as to adjust the support force angle of the support surface to the leg according to the user's needs, provide more comfortable leg support for the user, and improve the user's riding experience.

[0024] The seat and the vehicle of the application have the same or similar advantages as the aforementioned leg support structure compared with the related art, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0025] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application, and are incorporated in and constitute a part of this application. The embodiments of the application illustrated in the drawings, and their description, are used to explain the application, and do not constitute an improper limitation on the application. In the drawings:

[0026] Figure 1 is a schematic view of a normal state of a leg support structure in an embodiment of the application;

[0027] Figure 2 is a schematic view of a front pushing leg support surface in a concave state of a leg support structure in an embodiment of the application;

[0028] Figure 3 is a structure view of a front pushing leg support surface in a concave state of a leg support structure in an embodiment of the application;

[0029] Figure 4 is a structure view of a leg support surface in a normal state of a leg support structure in an embodiment of the application;

[0030] Figure 5 is a top view of a leg support structure in an embodiment of the application;

[0031] Figure 6 is an exploded view of a front pushing leg support assembly of a leg support structure in an embodiment of the application;

[0032] Figure 7 is a front view of a leg support structure in an embodiment of the application;

[0033] Figure 8 is a sectional view of a front pushing leg support assembly in the A-A direction of a leg support structure in an embodiment of the application;

[0034] Figure 9is a sectional view of a front pushing leg rest assembly in a leg rest structure in an embodiment of the present application in C-C direction;

[0035] Figure 10 is a sectional view of a sliding assembly of a front pushing leg rest assembly in an embodiment of the present application in B-B direction;

[0036] Explanation of reference numerals: 10 - leg rest fixing member, 20 - rotating leg rest, 30 - front pushing leg rest assembly, 40 - leg rest support assembly, 31 - front pushing leg rest support, 32 - support surface member, 33 - driving mechanism, 320 - mounting unit, 321 - movable unit, 3201 - first mounting arm, 3202 - first support part, 3203 - second support part, 3201a - first through hole, 3211 - movable member, 32111 - second mounting arm, 32112 - flat plate part, 3211b - first connecting end, 3211c - second connecting end, 3211a - second through hole, 3211d - third through hole, 3213 - connecting rod, 32133 - movable rod, 32131 - turning connecting member, 3213a - fifth through hole, 32132 - connecting sheet, 3213b - fourth through hole, 331 - sliding assembly, 332 - driving assembly, 3311 - sliding member, 3312 - sliding groove, 3321 - screw rod, 33121 - limiting part, 33111 - screw hole, 33112 - clamping part, 3311a - connecting arm, 34 - massage air bag. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0038] The terms "first", "second", and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be exchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally a category, and are not limited to the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / ", generally indicates that the front and rear associated objects are in an "or" relationship.

[0039] The terms "comprise", "comprising", or any other variations thereof, in the Specification and in the claims of the present application, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without more limitations, an element defined by the phrase "comprising a" does not exclude the existence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0040] A leg rest structure, a seat and a vehicle provided by the present application are described in detail below by listing specific embodiments.

[0041] Referring to Figures 1 to 3 , the present application provides a leg rest structure, which comprises a leg rest support assembly 40 and a front push leg rest assembly 30. The front push leg rest assembly 30 is connected with the leg rest support assembly 40. The front push leg rest assembly 30 comprises a front push leg rest bracket 31, a support surface component 32, and a driving mechanism 33. The front push leg rest bracket 31 is connected with the leg rest support assembly 40. The support surface component 32 is installed on the front push leg rest bracket 31. The driving mechanism 33 is movably connected with the support surface component 32, and is used to drive the support surface of the support surface component 32 to switch between a flat state and a recessed state. In the recessed state, the support surface of the support surface component 32 is recessed towards the front push leg rest bracket 31.

[0042] Specifically, referring to Figures 1 to 2 , the leg rest support assembly 40 is used for fixing the whole seat. The front push leg rest assembly 30 is connected with the leg rest support assembly 40. The leg rest support assembly 40 can further comprise a linkage structure that enables the front push leg rest assembly 30 to be extended and retracted forward and backward, and is connected with the front push leg rest assembly 30 through the linkage structure. The linkage structure can be a four-bar linkage structure, and the present application does not limit it.

[0043] The front push leg rest assembly 30 comprises the front push leg rest bracket 31, the support surface component 32, and the driving mechanism 33. The front push leg rest bracket 31 is used to be connected with the leg rest support assembly 40, and is fixedly installed with the driving mechanism 33 and the support surface component 32. The support surface component 32 is fixedly installed on a side of the front push leg rest bracket 31 that is used to support the leg of a user, and is movably connected with the driving mechanism 33. The support surface component 32 comprises a support surface that is used to provide a support force to the leg of the user. The support surface can be switched between the flat state and the recessed state. In normal use, the support surface is in the flat state. When the user wants to change the support angle of the support surface according to the demand, the driving mechanism 33 can be adjusted. The support surface of the support surface component 32 is recessed towards the front push leg rest bracket 31 under the driving of the driving mechanism 33.

[0044] Optionally, in another embodiment of the present application, in order to improve the appearance and comfort of the leg rest structure, a cladding layer can be provided on the front push leg rest assembly 30, which can be a cladding leather, fabric or other beautiful and comfortable cladding surface, Figure 1 and Figure 2 i.e. a schematic view of the front push leg rest assembly 30 after cladding the surface with a cladding surface.

[0045] As Figure 1 shown, in the normal state, the support surface of the front push leg rest assembly 30 of the leg rest structure is in a flat state, and after the user sits down, the support surface provides support force for the user's legs; when the user wants to adjust the angle of the support force of the support surface of the front push leg rest assembly 30 on the legs, the support surface can be depressed in the direction of the front push leg rest support 31 under the driving of the driving mechanism 33, and the state shown in Figure 2 is obtained, at which time the user can place the legs in the depressed part of the support surface. Based on this, the user can control the driving mechanism 33 to control the support surface of the front push leg rest assembly 30 to switch between the depressed state and the flat state, which provides convenience for the user to adjust the state of the support surface. In addition, the driving mechanism 33 can also include an adjustment control member, and the user can adjust the degree of depression of the support surface of the front push leg rest assembly 30 by the adjustment control member to adjust the angle of the support force of the support surface on the legs according to the user's own needs, so as to provide more comfortable leg support for the user and improve the user's riding experience.

[0046] Optionally, referring to Figures 3 to 6 , the support surface component 32 includes at least two mounting units 320 and at least one movable unit 321; the movable unit 321 has a support surface; the mounting units 320 are spaced apart and fixedly installed on the front push leg rest support 31; one movable unit 321 is movably connected with two mounting units 320; the driving mechanism 33 is movably connected with the movable unit 321, and is used to drive the support surface of the movable unit 321 to switch between the depressed state and the flat state.

[0047] Specifically, the mounting units 320 can be fixedly installed on the front push leg rest support 31 and spaced apart along the second direction Y to provide sufficient support force for the movable unit 321. Of course, when spaced apart, they can be arranged at the same interval.

[0048] The movable unit 321 is movably connected with the two mounting units 320, and the support surface of the movable unit 321 faces away from the front push leg rest support 31 to provide support force for the user's legs.

[0049] Further, the mounting units 320 and / or the movable unit 321 should have a preset height, so that the support surface of the movable unit 321 is away from the direction of the front leg rest support 31, and space is provided for the support surface of the movable unit 321 to be recessed towards the front leg rest support 31. The driving mechanism 33 is movably connected to the movable unit 321, and the connection position is preferably at the middle position of the connection points and / or surfaces of the movable unit 321 and the two mounting units 320, so that the recessed part of the movable unit 321 is at the middle position of the support surface. In addition, the mounting unit 320 is a component that can provide sufficient support force and cannot be deformed, which can be a flat plate, a steel pipe, etc., and the embodiments of the present application are not limited thereto. The support surface of the movable unit 321 can be a structure that can provide sufficient support force for the leg of a person and can be deformed and recessed under the driving of the driving mechanism 33, such as a flat plate combination, a spring combination, etc., and the embodiments of the present application are not limited thereto.

[0050] In a normal state, the support surface of the movable unit 321 is in a flat plate state, and after a user sits down, the support surface provides support force for the leg of the user; when the user wants to adjust the angle of the support force of the support surface on the leg, the support surface of the movable unit 321 can be recessed towards the front leg rest support 31 under the driving of the driving mechanism 33, and at this time, the leg of the person is placed in the recessed part of the support surface. The support surface component 32 includes at least two mounting units 320 and at least one movable unit 321, the mounting unit 320 provides mounting conditions and support force for the movable unit 321, and movably connects the driving mechanism 33 and the movable unit 321, directly driving the support surface of the movable unit 321 to switch between the flat plate state and the recessed state. Not only does it improve the stability between the components of the support surface component 32, but it also provides convenience for the driving of the driving mechanism 33 on the support surface component 32.

[0051] In some embodiments, the mounting unit 320 is a rectangular frame structure, and one long side of the rectangular frame is fixedly installed on one side of the front leg rest support 31. The other long side of the rectangular frame is movably connected to the movable unit 320, providing sufficient support force for the movable unit 320 and providing sufficient height space for the support surface of the movable unit 320 to be recessed towards the front leg rest support 31. In some embodiments, the movable unit 320 is a planar structure composed of a plurality of parallel spiral springs, and the two ends of the spiral spring are movably connected to the long sides of the mounting unit 320 away from the front leg rest support 31. The driving mechanism 33 is movably connected to the spring in the middle of the spring plane.

[0052] In a normal state, the spring plane of the movable unit 320 serves as a support surface, which is a flat plate structure and provides support force for the user's legs. When the user wants to adjust the angle of the support force of the support surface, the adjusting drive mechanism 33 is adjusted, and the drive mechanism 33 drives part of the spiral spring to elongate, so that the spring plane is recessed towards the front leg support bracket 31. At this time, the user's legs are placed in the recessed part of the support surface, and the user can control the degree of recessing of the support surface by controlling the drive mechanism 33, so as to adjust the angle of the support force of the support surface to the legs according to the user's own needs, and provide more comfortable leg support for the user's legs, and improve the user's riding experience.

[0053] Optionally, as shown in Figures 6 to 9 The mounting unit 320 includes a first support part 3202 and two first mounting arms 3201. The two ends of the first support part 3202 are respectively connected to one first mounting arm 3201. The first support part 3202 is mounted on the front leg support bracket 31 along the first direction X, and the first mounting arm 3201 is away from the front leg support bracket 31. The end of the first mounting arm 3201 away from the front leg support bracket 31 is provided with a first through hole 3201a. The movable unit 321 is movably connected with the first through hole 3201a.

[0054] Specifically, the first support part 3202 can be rectangular or irregularly long strip-shaped. The first support part 3202 is fixedly mounted on the front leg support bracket 31 along the first direction X, and provides reliable support force for the first connecting part 3201 and the movable unit 321 movably connected thereto. The fixed connection mode of the first support part 3202 and the front leg support bracket 31 can be bolted or welded, and the present application does not limit it.

[0055] In some embodiments, the first support part 3202 and the two first mounting arms 3201 can be processed into an integral part by an integral molding process, which helps to ensure the reliability of the connection of the first support part 3202 and the two first mounting arms 3201, and at the same time saves the subsequent connection process, which helps to control the processing cost of the mounting unit 320. In other embodiments, the two first mounting arms 3201 can be fixedly connected with the first support part 3202 by welding or bolts, which is more convenient for processing of each part, and helps to reduce the processing difficulty of the mounting unit 320.

[0056] The first mounting arm 3201 is recessed towards the side away from the front leg rest support 31, and provides sufficient space for the support surface of the movable unit 321 to be recessed towards the front leg rest support 31. An end of the first mounting arm 3201 away from the front leg rest support 31 is provided with a first through hole 3201a, and the movable unit 321 is movably connected to the first through hole 3201a by a bolt, a cylindrical pin or the like, which is not limited in the embodiments of the present application. In addition, the first support part 3202 and the two first mounting arms 3201 can be made of aluminum alloy, composite material or the like, and have good strength and rigidity, and can better support and fix the movable unit 321.

[0057] In the embodiments of the present application, the mounting unit 320 is provided as two parts including the first support part 3202 and the two first mounting arms 3201, the first support part 3202 is fixedly installed on the front leg rest support 31, and the first mounting arm 3201 is recessed towards the side away from the front leg rest support 31, which can ensure that the mounting unit 320 has stable support force on the movable unit 321, and at the same time, sufficient space is reserved for the support surface of the movable unit 321 to be recessed towards the front leg rest support 31, and the structure is simpler.

[0058] Optionally, referring to Figures 4 to 6 , the number of mounting units 320 includes at least three, the at least three mounting units 320 are arranged side by side on the front leg rest support 31; the movable unit 321 includes at least two; and each movable unit 321 is installed between and movably connected to the adjacent two mounting units 320.

[0059] Specifically, one of the mounting units 320 is arranged at a middle position of the front leg rest support 31 along the second direction Y, and the other two mounting units 320 are symmetrically arranged about the mounting unit 320 at the middle position, and the three mounting units 320 are arranged at intervals with the two movable units 321, so that one movable unit 321 is arranged between every two mounting units 320. Since the mounting units 320 arranged on the two sides are symmetrically arranged about the mounting unit 320 arranged at the middle, the two movable units 321 are also symmetrically arranged about the mounting unit 320 at the middle, and when the support surface of the movable unit 321 is recessed towards the front leg rest support 31 under the drive of the drive mechanism 33, two symmetrical recesses are formed on the support surface of the support surface part 32.

[0060] The arrangement of the two movable units 321 can make the support surface of the support surface part 32 have two support surfaces on the two sides of the central symmetry, which can be switched between the flat state and the recessed state, and the user can adjust the support force angle of the support surface to the leg according to the own needs, and at the same time, the user can place the two legs in the recesses on the two sides, so as to provide a more comfortable sitting posture for the user.

[0061] In some embodiments, the driving mechanism 33 can be adjusted to switch the support surfaces of the two movable units 321 between the recessed state and the flat state synchronously according to the needs of the customer, so as to change the support angles of the support surfaces of the two movable units 321 to the double legs synchronously, and provide the same angle of support force to the double legs of the user; in other embodiments, the driving mechanism 33 can also be adjusted to switch the support surfaces of the two movable units 321 between the recessed state and the flat state respectively according to the needs of the customer, so as to change the support angles of the support surfaces of the two movable units 321 to the double legs respectively, and provide different angles of support force to the left leg and the right leg of the user, so as to further meet the needs of different users.

[0062] Optionally, referring to Figure 4 and Figure 9 , the first mounting arm 3201 of the mounting unit 320 in the middle position is triangular, one side of the triangle is connected with the first support part 3202; the connecting part 3201 of the mounting unit 320 in the two sides is rectangular; the mounting unit 320 in the two sides further comprises a second support part 3203, which is connected with the first support part 3202 and the two first mounting arms 3201 away from the side of the mounting unit 320 in the middle position respectively.

[0063] Specifically, the first mounting arm 3201 is triangular, which can save the production materials of the first mounting arm 3201 while ensuring that the first mounting arm 3201 provides sufficient support force for the movable unit 321; the mounting unit 320 in the two sides increases the second support part 3203, which can further enhance the support force of the mounting unit 320 to the movable unit 321 and improve the stability of the first mounting arm 3201. Preferably, the second support part 3203 can be rectangular, and the second support part 3203, the first mounting arm 3201 and the movable unit 321 together constitute a cuboid space, which increases the aesthetics while facilitating subsequent covering of the front push leg support assembly 30 with a cover.

[0064] Optionally, referring to Figures 6 to 9 , the movable unit 321 comprises two movable parts 3211 and a connecting rod 3213; the connecting rod 3213 is movably connected with one end of the two movable parts 3211 respectively, and the other end of the two movable parts 3211 is movably connected with the two mounting units 320 respectively; the connecting rod 3213 is movably connected with the driving mechanism 33; the driving mechanism 33 drives the connecting rod 3213 to move, and the connecting rod 3213 drives the two movable parts 3211 to rotate towards the direction close to the front push leg support bracket 31 to form the recessed state, or drives the two movable parts 3211 to rotate towards the direction away from the front push leg support bracket 31 to form the flat state.

[0065] Specifically, one end of each of the two movable members 3211 is movably connected to the connecting rod 3213, and the other end of each of the two movable members 3211 is movably connected to the two mounting units 320, so that the two movable members 3211 are symmetrically arranged about the connecting rod 3213. The driving mechanism 33 is movably connected to the connecting rod 3213. When the driving mechanism 33 drives the connecting rod 3213 to move, the two movable members 3211 rotate relative to each other about the connecting rod 3213 towards the front leg rest support 31, so that the support surface of the movable unit 321 forms a concave state towards the front leg rest support 31, or the connecting rod 3213 drives the two movable members 3211 to rotate away from the front leg rest support 31, so that the support surface of the movable unit 321 forms a flat state. The connecting rod 3213 can be a tubular structure or a flat structure made of a rigid material, which can be an aluminum alloy, a composite material, etc., which is not limited in the embodiments of the present application.

[0066] In a normal state, the support surfaces of the two movable members 3211 are in the same plane, providing support for the user's legs. When the user wants to adjust the support angle of the support surface, the driving mechanism 33 is adjusted. When the driving mechanism 33 drives the connecting rod 3213 to move, the two movable members 3211 rotate relative to each other about the connecting rod 3213 towards the front leg rest support 31, so that the support surface of the movable unit 321 forms a concave state towards the front leg rest support 31. Since the two movable members 3211 are symmetrically arranged about the connecting rod 3213 and simultaneously driven by the connecting rod 3213 to rotate relative to each other towards or away from the front leg rest support 31, the inclination of the two movable members 3211 towards the front leg rest support 31 is the same, so that the support surface of the movable unit 321 forms a concave shape symmetrical on both sides. When the user places his legs in the concave part, symmetrical support is provided for the user's legs on both sides, further improving the user's riding comfort.

[0067] In some embodiments, the movable member 3211 is a planar structure that can provide support for the user's legs. The planar structure can be a rigid plane or a spring pad, etc. One end of the movable member 3211 is movably connected to the connecting rod 3213 through a hinge or a hinge, etc. The other end of each of the two movable members 3211 is movably connected to the two mounting members 320 through a bolt or a cylindrical pin. When the driving mechanism 33 drives the connecting rod 3213 to move, the two movable members 3211 rotate relative to each other about the connecting rod 3213 towards the front leg rest support 31, so that the support surface of the movable unit 321 switches between the flat state and the concave state.

[0068] Optionally, referring to Figures 3 to 6The application provides a structural schematic diagram and an explosion diagram of the movable unit 321. The movable part 3211 comprises two second mounting arms 32111 and a flat plate part 32112; two ends of the flat plate part 32112 are connected with a second mounting arm 32111 respectively; the second mounting arm 32111 comprises a first connecting end 3211b and a second connecting end 3211c along the second direction Y; the first connecting end 3211b is provided with a second through hole 3211a, and the second connecting end 3211c is provided with a third through hole 3211d; two movable parts 3211 are located on the same side along the second direction Y, the second through holes 3211a are overlapped and pass through the connecting rod 3213; two movable parts 3211 are located on the same side along the second direction Y, and the third through holes 3211d are respectively connected with two mounting units 320.

[0069] Specifically, when the supporting surface part 32 comprises three mounting units 320 and two movable units 321, two movable units 321 are located on the same side along the second direction Y and are not connected with the other movable unit 321, and are respectively connected with the first through holes 3201a of the mounting units 320 located on both sides of the front push leg support bracket 31 through the third through holes 3211d. The third through holes 3211d of two movable units 321 located on the same side along the second direction Y and connected with the other movable unit 321 are overlapped, and are connected with the first through holes 3201a of the mounting unit 320 located in the middle of the front push leg support bracket 31.

[0070] The flat plate part 32112 can be a rectangular or irregular flat plate structure. In some embodiments, the flat plate part 32112 and the two second mounting arms 32111 can be processed into an integral part through an integral molding process, which helps to ensure the reliability of the connection between the flat plate part 32112 and the two second mounting arms 32111, saves subsequent connection procedures, and helps to control the processing cost of the movable unit 321; in other embodiments, the two second mounting arms 32111 can be fixedly connected with the flat plate part 32112 through welding or bolts, which is more convenient for processing of each part and helps to reduce the processing difficulty of the movable unit 321. One side of the first connecting end 3211b of the two movable parts 3211 is movably connected, the second through holes 3211a located on the same side along the second direction Y are overlapped, and the two ends of the connecting rod 3213 pass through the two second through holes 3211a overlapped on the same side along the second direction Y, so as to connect the two movable parts 3211 through the connecting rod 3213. The third through holes 3211d of the two movable parts 3211 located on the same side along the second direction Y are respectively connected with the two mounting units 320 through bolts or cylindrical pins.

[0071] The second mounting arm 32111 of the movable piece 3211 is arranged to be bent towards the direction of the front leg support bracket, so that the flat plate 32112 is kept at a distance from the front leg support bracket 31, and space is reserved for the flat plate 32112 to be recessed towards the front leg support bracket 31 around the connecting rod 3213. The through holes are arranged directly on the first connecting end 3211b and the second connecting end 3211c, and the connecting rod 3213 passes through the overlapping through holes to connect the two movable pieces 3211, which not only facilitates the installation of the movable piece 3211 and the connecting rod 3213, reduces the installation difficulty, but also saves the installation materials of the connecting rod 3213 and the two movable pieces 3211.

[0072] Optionally, referring to Figure 4 , the first connecting end 3211b extends in the second direction Y towards the direction away from the second connecting end 3211c in the plane where the second mounting arm 32111 is located; and the second connecting end 3211c extends obliquely in the direction away from the first connecting end 3211b and the flat plate 32112 in the plane where the second mounting arm 32111 is located.

[0073] Specifically, the end of the first connecting end 3211b and the second connecting end 3211c can be arranged in a circular shape to save the processing materials of the first connecting end 3211b and the second connecting end 3211c; the first connecting end 3211b extends in the second direction Y towards the direction away from the second connecting end 3211c in the plane where the second mounting arm 32111 is located, so that the two movable pieces 3211 are kept at a distance, and enough space is reserved for the rotation of the two movable pieces 3211 towards the front leg support bracket 31 around the connecting rod 3213.

[0074] The second connecting end 3211c extends obliquely in the direction away from the first connecting end 3211b and the flat plate 32112 in the plane where the second mounting arm 32111 is located, so that the first connecting end 3211b and the second connecting end 3211c have a certain height difference, and more space is provided for the recess of the first connecting end 3211b towards the front leg support bracket in the case that the second connecting end 3211c keeps a fixed height.

[0075] Optionally, referring to Figures 6 to 9The connecting rod 3213 comprises a movable rod 32133, a turning connecting piece 32131 and a connecting sheet 32132. The end of the movable rod 32133 penetrates into the second through hole 3211a and is movably connected with the second through hole 3211a. The turning connecting piece 32131 is fixedly connected with the movable rod 32133 along the second direction Y, and the fifth through hole 3213a is arranged on the side of the turning connecting piece 32131 away from the movable rod 32133. The two ends of the connecting sheet 32132 are provided with the fourth through hole 3213b, one of which is movably connected with the fifth through hole 3213a, and the other is movably connected with the driving mechanism 33.

[0076] Specifically, in some embodiments, the two ends of the movable rod 32133 are provided with cylindrical protrusions along the axial direction of the movable rod 32133, and the diameter of the cylindrical protrusions is smaller than the diameter of the second through hole 3211a, so that the protrusions at the two ends of the movable rod 32133 penetrate into the second through hole 3211a and are movably connected with the second through hole 3211a. In other embodiments, the diameter of the movable rod 32133 is smaller than the diameter of the second through hole 3211a, and the two ends of the movable rod 32133 directly penetrate through the second through hole 3211a and are movably connected with the second through hole 3211a. The turning connecting piece 32131 is a planar structure with both ends vertically bent, and the two side bent parts are fixedly connected with the movable rod 32133 along the second direction Y by welding or injection molding, etc. The planar part of the turning connecting piece 32131 is arranged away from and parallel to the movable rod 32133, and the fifth through hole 3213a is arranged on the planar part. The connecting sheet 32132 is a long strip structure with both ends being circular, and the fourth through hole 3213b is arranged at the two ends of the connecting sheet 32132. The fourth through hole 3213b at one end of the connecting sheet 32132 is movably connected with the fifth through hole 3213a by a bolt or a cylindrical pin, and the fourth through hole 3213b at the other end is movably connected with the driving mechanism 33. In addition, the turning connecting piece 32131 and the connecting sheet 32132 are made of a rigid material which can provide sufficient rigidity, strength and stability for the driving mechanism 33 to drive the movable unit 321, and the rigid material can be an aluminum alloy, a composite material, etc., which is not limited in the embodiments of the present application. When the driving mechanism 33 moves back and forth along the first direction X, the connecting sheet 32132 moves obliquely towards the direction of the front pushing leg support 31 and the movement direction of the driving mechanism 33. Since the connecting sheet 32132 is movably connected with the driving mechanism 33 and the turning connecting piece 32131, the connecting sheet 32132 can rotate around the turning connecting piece 32131 under the driving of the driving mechanism 33, and at the same time, the connecting rod 3213 moves towards or away from the direction of the front pushing leg support 31, thereby converting the pulling force of the driving mechanism 33 along the first direction X into the pulling force of the connecting rod 3213 moving towards or away from the direction of the front pushing leg support 31.

[0077] Specifically, when the driving mechanism 33 moves along the first direction X away from the steering connecting piece 32131, the connecting piece 32132 moves obliquely towards the front push leg support bracket 31 and away from the steering connecting piece 32131, and the connecting piece 32132 drives the connecting rod 3213 to move towards the front push leg support bracket 31, so that the support surface of the support surface part 32 is in a concave state. When the driving mechanism 33 moves along the first direction X towards the steering connecting piece 32131, the connecting piece 32132 moves obliquely towards the front push leg support bracket 31 and away from the steering connecting piece 32131, and the connecting piece 32132 drives the connecting rod 3213 to move away from the front push leg support bracket 31, so that the support surface of the support surface part 32 is in a flat state.

[0078] Optionally, referring to Figures 8 to 10 The driving mechanism 33 comprises a sliding assembly 331 and a driving assembly 332; the driving assembly 332 is fixedly installed on the front push leg support bracket 31 and is movably connected with the sliding assembly 331; the sliding assembly 331 is movably connected with the support surface part 32.

[0079] Specifically, the driving assembly 332 can be an adjusting motor, a pneumatic or hydraulic driving device or other driving devices, which is not limited here. The driving assembly 332 is fixedly installed on one side of the front push leg support bracket along the first direction X and is arranged opposite to the connecting point of the driving mechanism 33 and the support surface part 32; the sliding assembly 331 is movably connected with the support surface part 32 through the connecting piece 32132.

[0080] The driving assembly 332 fixedly installed on the front push leg support bracket 31 and the sliding assembly 331 movably connected with the driving assembly 332 can make the setting of the driving mechanism 33 more flexible. By flexibly changing the structure and position of the sliding assembly 331, different positions of the support surface of the support surface part 32 can be switched between the flat state and the concave state.

[0081] Optionally, referring to Figure 10 The application provides a partial enlarged view of the sliding assembly 321. The sliding assembly 331 comprises a sliding piece 3311 and a sliding groove 3312; the driving assembly 332 is provided with a lead screw 3321 along the first direction X; the sliding groove 3312 is provided with a limiting portion 33121 on both sides and is fixedly installed on the front push leg support bracket 31 along the first direction X; the sliding piece 3311 is provided with a threaded hole 33111 for the lead screw 3321 to pass through and a clamping portion 33112 arranged on both sides of the threaded hole 33111 along the second direction Y, one end of the clamping portion 33112 is clamped with the limiting portion 33121, and the other end of the clamping portion 33112 is movably connected with the support surface part 32.

[0082] Specifically, the sliding groove 3312 includes a rectangular mounting portion and limiting portions 33121 provided on both sides of the mounting portion along the second direction Y, away from the front leg support bracket 31 and extending to both ends along the second direction Y, the sliding groove 3312 is fixedly installed on the front leg support bracket 31 through the mounting portion and the limiting portions 33121 are directed away from the front leg support bracket 31; the sliding piece 3311 is a rectangular structure with the same width as the sliding groove 3312, a threaded hole 33111 is provided in the middle position for the lead screw 3321 to pass through, a clamping portion 33112 is provided on both sides of the threaded hole 33111 along the second direction Y, the clamping portion 33112 is approximately a cuboid structure, an opening is provided on the side close to the threaded hole 33111 for the limiting portion 33121 to pass through, the limiting portions 33121 on both sides of the sliding groove 3312 pass through the openings of the two clamping portions 33112 and are clamped with one end of the clamping portion 33112, the other end of the clamping portion 33112 is movably connected with the support surface component 32. In addition, the sliding piece 3311 and the sliding groove 3312 are made of a rigid material that can provide sufficient rigidity, strength and stability for the driving assembly 332 to drive the support surface component 32, the rigid material can be aluminum alloy, composite material, etc., and the embodiments of the present application are not limited thereto.

[0083] In actual use, the lead screw 3321 of the driving assembly 332 passes through the threaded hole 33111, the driving assembly 332 is started, and the sliding piece 3311 is driven to move back and forth along the sliding groove 3312 in the first direction X. The other end of the clamping portion 33112 of the sliding piece 3311 is movably connected with the support surface component 32, and under the driving of the sliding piece 3311, the support surface of the support surface component 32 is switched between the flat state and the recessed state. Because the limiting portions 33121 are provided on both sides of the sliding groove 3312, the clamping portions 33112 are provided on both sides of the sliding piece 3311, and one end of the clamping portion 33112 is clamped with the limiting portion 33121, the stability of the sliding piece 3311 in the third direction Z when driving the support surface of the support surface component 32 to switch between the flat state and the recessed state can be effectively guaranteed.

[0084] Optionally, referring to Figure 10 , the present application provides a partial enlarged view of the sliding assembly 321. The clamping portion 33112 of the sliding piece 3311 further has two connecting arms 3311a extending to both ends in the second direction Y; the ends of the two connecting arms 3311a are movably connected with two places of the support surface component 32, and simultaneously drive the two support surfaces of the support surface component 32 to switch between the recessed state and the flat state.

[0085] The connecting arm 3311a is a rod-like or wing-like structure extending towards both ends in the second direction Y. In some embodiments, the end of the connecting arm 3311a connected with the support surface component 32 is provided with a protrusion, which can be passed through a mounting hole on the support surface component 32 and movably connected therewith; in other embodiments, the end of the connecting arm 3311a connected with the support surface component 32 is provided with a turning piece, which is movably connected with the support surface component 32 through the turning piece.

[0086] In some embodiments, the lengths of the two connecting arms 3311a are the same, so that the forces acting on them are uniform when driving the support surface component 32 to move; in other embodiments, the lengths of the two connecting arms 3311a can be set to be different to ensure the rationality of the installation positions of the driving mechanism and other components.

[0087] In some embodiments, the clamping part 33112 and the two connecting arms 3311a can be processed as an integral part through an integral molding process, which helps to ensure the reliability of the connection between the clamping part 33112 and the two connecting arms 3311a, saves subsequent connection procedures, and helps to control the processing cost of the sliding part 3311; in other embodiments, the two connecting arms 3311a can be fixedly connected with the clamping part 33112 through welding or bolts, which is more convenient for processing of the components, and helps to reduce the processing difficulty of the sliding part 3311.

[0088] In actual use, when the sliding part 3311 moves back and forth along the first direction X, the two connecting arms 3311a can simultaneously drive the two support surfaces of the support surface component 32 to switch between the flat state and the recessed state. This can effectively improve the utilization efficiency of the driving mechanism 33, reduce the manufacturing cost of the leg support structure, and improve the synchronization and coordination of the driving system.

[0089] Optionally, referring to Figure 4 , the leg support structure further comprises a massage air bag 34; the massage air bag 34 is installed on the support surface of the support surface component 32.

[0090] Specifically, the massage air bag 34 is installed on the support surface of the support surface component 32 and is connected with an air pipe, and the user can control the inflation and deflation of the massage air bag 34 according to needs.

[0091] When the user controls the support surface of the support surface component 32 to switch between the flat state and the recessed state, the massage air bag 34 moves with the support surface component 32, and the user can adjust the massage position of the massage air bag by adjusting the degree of recess of the support surface component 32, and can choose whether to use the massage function by controlling the inflation and deflation of the massage air bag. This further improves the comfort of the user when sitting.

[0092] Optionally, referring to Figures 1-3The leg rest support assembly 40 comprises a leg rest fixing member 10 and a rotating leg rest 20; the rotating leg rest 20 and the front pushing leg rest assembly 30 are connected with the leg rest fixing member 10 respectively.

[0093] Specifically, the rotating leg rest 20 has a sliding relationship with the front pushing leg rest assembly 30, that is, the front pushing leg rest assembly 30 can be lifted or lowered along the third direction Z relative to the rotating leg rest 20, and a user can lift or lower the front pushing leg rest assembly 30 according to requirements.

[0094] By arranging the rotating leg rest 20 and making the rotating leg rest 20 have a sliding relationship with the front pushing leg rest assembly 30, a user can further adjust the support force angle of the support surface of the front pushing leg rest assembly 30 according to requirements, so as to improve the leg comfort of the user.

[0095] The application further provides a seat comprising the leg rest structure of any one of the preceding embodiments. The seat can be a car seat, a household massage chair, etc., and the seat is provided with the leg rest structure of the preceding embodiments. The support surface on the front pushing leg rest assembly 30 of the leg rest structure can be switched between the flat state and the concave state under the driving of the driving mechanism 33, so as to adjust the support angle of the leg rest support surface according to requirements of a user, and improve the comfort of the user when sitting.

[0096] The application further provides a vehicle comprising the leg rest structure or the seat of any one of the preceding embodiments. The vehicle can be an electric vehicle, a fuel vehicle, a hybrid vehicle, etc., and the vehicle is provided with the leg rest structure or the seat of the preceding embodiments. The support surface on the front pushing leg rest assembly 30 of the leg rest structure can be switched between the flat state and the concave state under the driving of the driving mechanism 33, so as to adjust the support angle and the massage position of the leg rest support surface according to requirements of a user, and improve the comfort of the user when sitting.

[0097] It should be understood that the "some embodiments" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiments are included in at least one embodiment of the application. Therefore, "in some embodiments" appearing throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner.

[0098] Finally, it should be noted that the above only describes the preferred embodiments of the application and should not be used to limit the application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the application should be included in the protection scope of the application.

Claims

1. A leg rest structure, characterized by, The leg support structure comprises a leg support support assembly (40) and a front pushing leg support assembly (30); the front pushing leg support assembly (30) is connected with the leg support support assembly (40); The front pushing leg support assembly (30) comprises a front pushing leg support bracket (31), a support surface component (32) and a driving mechanism (33); the front pushing leg support bracket (31) is connected with the leg support support assembly (40); the support surface component (32) is installed on the front pushing leg support bracket (31); the driving mechanism (33) is movably connected with the support surface component (32) and is used for driving the support surface of the support surface component (32) to switch between a recessed state and a flat state; in the recessed state, the support surface of the support surface component (32) is recessed towards the front pushing leg support bracket (31).

2. The leg rest structure of claim 1, wherein The support surface component (32) comprises at least two installation units (320) and at least one movable unit (321); the movable unit (321) has the support surface; The installation units (320) are arranged at intervals and are fixedly installed on the front pushing leg support bracket (31); one movable unit (321) is movably connected with two installation units (320); The driving mechanism (33) is movably connected with the movable unit (321) and is used for driving the support surface of the movable unit (321) to switch between the recessed state and the flat state.

3. The leg rest structure of claim 2, wherein, The installation unit (320) comprises a first support part (3202) and two first installation arms (3201); the two ends of the first support part (3202) are respectively connected with one first installation arm (3201); The first support part (3202) is installed on the front pushing leg support bracket (31) along a first direction (X); the first installation arms (3201) are towards the side away from the front pushing leg support bracket (31); One end of the first installation arm (3201) away from the front pushing leg support bracket (31) is provided with a first through hole (3201a); the movable unit (321) is movably connected with the first through hole (3201a).

4. The leg rest structure of claim 2, wherein The number of the installation units (320) comprises at least three; the at least three installation units (320) are arranged side by side on the front pushing leg support bracket (31); The movable unit (321) comprises at least two; each movable unit (321) is installed between and movably connected with two adjacent installation units (320).

5. The leg rest structure of claim 3, wherein The first installation arm (3201) of the installation unit (320) in the middle position is in a triangular shape; one side of the triangular shape is connected with the first support part (3202); The first installation arm (3201) of the installation unit (320) at two sides is in a rectangular shape; the installation unit (320) at two sides further comprises a second support part (3203); the second support part (3203) is respectively connected with the first support part (3202), the two first installation arms (3201) and the side away from the installation unit (320) in the middle position.

6. The leg rest structure of claim 2, wherein, The movable unit (321) comprises two movable pieces (3211) and a connecting rod (3213); The connecting rod (3213) is movably connected with one end of the two movable pieces (3211), and the other end of the two movable pieces (3211) is movably connected with the two mounting units (320) respectively; The connecting rod (3213) is movably connected with the driving mechanism (33), the driving mechanism (33) drives the connecting rod (3213) to move, the connecting rod (3213) drives the two movable pieces (3211) to rotate towards the direction of approaching the front push leg support (31) to form the recessed state, or drives the two movable pieces (3211) to rotate towards the direction of moving away from the front push leg support (31) to form the flat plate state.

7. The leg rest structure of claim 6, wherein The movable piece (3211) comprises two second mounting arms (32111) and a flat plate part (32112); the two ends of the flat plate part (32112) are connected with one second mounting arm (32111) respectively; The second mounting arm (32111) comprises a first connecting end (3211b) and a second connecting end (3211c) along a second direction (Y); the first connecting end (3211b) is provided with a second through hole (3211a), and the second connecting end (3211c) is provided with a third through hole (3211d); The two movable pieces (3211) are located on the same side along the second direction (Y), the second through holes (3211a) are overlapped and penetrate into the connecting rod (3213); The two movable pieces (3211) are located on the same side along the second direction (Y), and the third through holes (3211d) are movably connected with the two mounting units (320) respectively.

8. The leg rest structure of claim 7, wherein, The first connecting end (3211b) extends in the second direction (Y) and away from the second connecting end (3211c) on the plane where the second mounting arm (32111) is located; The second connecting end (3211c) extends away from the first connecting end (3211b) and the flat plate part (32112) on the plane where the second mounting arm (32111) is located.

9. The leg rest structure of claim 7, wherein, The connecting rod (3213) comprises a movable rod (32133), a turning connecting piece (32131) and a connecting sheet (32132); The end of the movable rod (32133) penetrates into the second through hole (3211a) and is movably connected with the second through hole (3211a); The turning connecting piece (32131) is fixedly connected with the movable rod (32133) along the second direction (Y), and a fifth through hole (3213a) is arranged on the side of the turning connecting piece (32131) away from the movable rod (32133); Two ends of the connecting piece (32132) are provided with fourth through holes (3213b), one of which is movably connected with the fifth through hole (3213a), and the other is movably connected with the driving mechanism (33).

10. Leg rest structure according to any of claims 1-9, characterized in that The driving mechanism (33) comprises a sliding assembly (331) and a driving assembly (332). The driving assembly (332) is fixedly installed on the front push leg support bracket (31) and movably connected with the sliding assembly (331); the sliding assembly (331) is movably connected with the support surface component (32).

11. The leg rest structure of claim 10, wherein, The sliding assembly (331) comprises a sliding piece (3311) and a sliding groove (3312). The driving assembly (332) is provided with a screw rod (3321) along the first direction (X); the sliding groove (3312) is provided with limiting portions (33121) on both sides and is fixedly installed on the front push leg support bracket (31) along the first direction (X). The sliding piece (3311) is provided with a threaded hole (33111) for the screw rod (3321) to pass through and a clamping portion (33112) along the second direction (Y) on both sides of the threaded hole (33111); one end of the clamping portion (33112) is clamped with the limiting portion (33121), and the other end is movably connected with the support surface component (32).

12. The leg rest structure of claim 11, wherein, The clamping portion (33112) further has two connecting arms (3311a) extending towards both ends in the second direction (Y); The ends of the two connecting arms (3311a) are movably connected with two places of the support surface component (32) respectively, and simultaneously drive the two places of the support surface of the support surface component (32) to switch between the recessed state and the flat state.

13. The leg rest structure according to any one of claims 1-9, wherein, The leg support structure further comprises a massage air bag (34); the massage air bag (34) is installed on the support surface of the support surface component (32).

14. The leg rest structure of any of claims 1-9, wherein, The leg support structure further comprises a leg support structure (40); the leg support structure (40) comprises a leg support fixing piece (10) and a rotating leg support (20); the rotating leg support (20) and the front push leg support assembly (30) are connected with the leg support fixing piece (10) respectively.

15. A seat, characterized in that The leg support structure comprises the leg support structure according to any one of claims 1-14.

16. A vehicle characterized by comprising: The seat comprises the leg support structure according to any one of claims 1-14 or the seat according to claim 15.

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