Folding lumbar support for vehicle and vehicle

Abstract

The embodiment of the present application provides a foldable lumbar support for a vehicle and a vehicle. The lumbar support includes: a lumbar support plate rotatably connected to an upper mounting frame and a lower mounting frame, a locking structure fixed to the back side of the lumbar support plate; a folding locking mechanism, fixed to an upper fixing seat and rotatably connected to the upper mounting frame; a lower fixing seat located below the upper fixing seat; an unfolding limiting mechanism, fixed to a lower fixing seat and rotatably connected to the lower mounting frame; under the action of an external force, the lumbar support plate can drive the upper mounting frame and the lower mounting frame to rotate in the same direction, and the locking structure and the folding locking mechanism are contacted and locked together to achieve the folding of the foldable lumbar support; after the folding locking mechanism and the locking structure are unlocked, the lumbar support plate rotates downward and unfolds until the unfolding limiting mechanism reaches a preset unfolding position and stops rotating, and the unfolded foldable lumbar support serves as a wheelchair fixing device. The vehicle includes the above-mentioned foldable lumbar support. The embodiment of the present application solves the technical problem that the lumbar support and wheelchair fixing devices of traditional vehicles occupy a large space.

Description

Technical Field

[0001] The present application relates to the technical field of vehicles, and in particular to a foldable lumbar support for a vehicle and a vehicle. Background Art

[0002] With the progress of society and the development of science and technology, low-floor trams that meet the requirements of "green travel", "low-carbon and environmental protection" and have sightseeing functions have been called for, so the demand for them at home and abroad has continued to increase; the rapid development of science and technology is reflected in the passengers' increasing requirements for the multifunctionality and rationalization of the interior components of low-floor trams. In order to meet the comfort requirements of standing passengers, lumbar support is required; at the same time, in order to meet the needs of people with limited mobility to park wheelchairs more stably, many countries require vehicles to add wheelchair fixing devices in the area for people with limited mobility, and the wheelchair fixing device has a high stability in wheelchair fixing.

[0003] Therefore, the lumbar support and wheelchair fixing device of the traditional vehicle occupy a large space, which is a technical problem that the technicians in this field need to solve urgently.

[0004] The above information disclosed in the background section is only for enhancing understanding of the background of the present application and therefore it may contain information that does not form the prior art known to a person of ordinary skill in the art. Summary of the invention

[0005] The embodiments of the present application provide a foldable lumbar support for a vehicle and a vehicle, so as to solve the technical problem that the lumbar support and wheelchair fixing device of a traditional vehicle occupy a large space.

[0006] According to a first aspect of an embodiment of the present application, there is provided a foldable lumbar support for a vehicle, comprising:

[0007] A lumbar support plate, an upper mounting frame and a lower mounting frame; the lumbar support plate is rotatably connected to the upper mounting frame and the lower mounting frame, and a locking structure is fixed to the back side of the lumbar support plate;

[0008] An upper fixing seat, used for fixing to a fixing surface in a vehicle;

[0009] A folding locking mechanism, fixed to the upper fixing seat and rotatably connected to the upper mounting frame;

[0010] A lower fixing seat, used to be fixed to a fixing surface in the vehicle and located below the upper fixing seat;

[0011] An expansion limiting mechanism is fixed to the lower fixing seat and is rotatably connected to the lower mounting frame;

[0012] Among them, under the action of external force, the lumbar support plate can drive the upper mounting frame and the lower mounting frame to rotate in the same direction, and the locking structure and the folding locking mechanism are contacted and locked together to realize the folding of the foldable lumbar support; after the folding locking mechanism and the locking structure are unlocked, the lumbar support plate rotates downward and unfolds until the unfolding limit mechanism reaches the preset unfolding position and stops rotating, and the unfolded foldable lumbar support serves as a wheelchair fixing device.

[0013] According to a second aspect of an embodiment of the present application, a vehicle is provided, comprising the above-mentioned foldable lumbar support.

[0014] The embodiment of the present application adopts the above technical solution, which has the following technical effects:

[0015] When in the folded state, the lumbar support board serves as a place for standing passengers to lean on, improving the comfort of standing passengers; when in the unfolded state, the unfolded foldable lumbar support can also be used as a wheelchair fixing device. The two states of the foldable lumbar support have different functions. When the wheelchair does not need to be fixed most of the time, the foldable lumbar support is folded up to save space. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1 A schematic diagram of a foldable lumbar support for a vehicle according to an embodiment of the present application;

[0018] Figures 2 to 5 for Figure 1 The schematic diagram of the movement of the foldable lumbar support of the vehicle shown in FIG.

[0019] Figure 6 for Figure 1 A schematic diagram of an upper fixing seat of a foldable lumbar support of a vehicle shown;

[0020] Figure 7 for Figure 6 A partial schematic diagram of

[0021] Figure 8 for Figure 1 A schematic diagram of an upper mounting frame of a foldable lumbar support of a vehicle shown;

[0022] Fig. 9 for Figure 1 A schematic diagram of a lower fixing seat of a foldable lumbar support of a vehicle shown;

[0023] Fig.10 for Fig. 9 An exploded view of the lower mounting is shown;

[0024] Fig.11 for Fig. 9 A schematic diagram of the end of the lower fixing seat shown;

[0025] Fig.12 for Fig. 9 A schematic cross-sectional view of the lower fixing seat shown;

[0026] Fig.13 for Figure 1 Schematic diagram of the installation of the lower mounting frame and support arm shown.

[0027] Reference numerals:

[0028] 110 lumbar support plate, 120 upper mounting frame, 121 L-shaped upper mounting rod, 122 upper inner connecting rod, 123 upper outer connecting rod,

[0029] 130 lower mounting frame, 131 L-shaped lower mounting rod, 132 lower inner connecting rod, 133 lower outer connecting rod,

[0030] 140 lock structure,

[0031] 210 upper fixed seat,

[0032] 220 lower fixing seat, 221 fixing plate, 222 lower fixing seat body, 223 three-stage sliding membrane, 224 buckle cover,

[0033] 310 lock slot body, 311 lock slot, 312 lock tongue entrance, 313 strip-shaped protrusion, 320 upper rotating body, 410 hydraulic support rod, 420 support arm. DETAILED DESCRIPTION

[0034] In order to make the technical solutions and advantages in the embodiments of the present application more clearly understood, the exemplary embodiments of the present application are further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than an exhaustive list of all the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0035] Embodiment 1

[0036] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, a foldable lumbar support for a vehicle according to an embodiment of the present application comprises:

[0037] A lumbar support plate 110, an upper mounting frame 120 and a lower mounting frame 130; the lumbar support plate 110 is rotatably connected to the upper mounting frame 120 and the lower mounting frame 130, and a locking structure is fixed to the back side of the lumbar support plate 110;

[0038] An upper fixing seat 210, used to fix to a fixing surface in a vehicle;

[0039] A folding locking mechanism, fixed to the upper fixing seat and rotatably connected to the upper mounting frame;

[0040] A lower fixing seat 220, used for fixing to a fixing surface in a vehicle and located below the upper fixing seat 210;

[0041] An expansion limiting mechanism is fixed to the lower fixing seat and is rotatably connected to the lower mounting frame;

[0042] Among them, under the action of external force, the lumbar support plate can drive the upper mounting frame and the lower mounting frame to rotate in the same direction, and the locking structure and the folding locking mechanism are contacted and locked together to realize the folding of the foldable lumbar support; after the folding locking mechanism and the locking structure are unlocked, the lumbar support plate rotates downward and unfolds until the unfolding limit mechanism reaches the preset unfolding position and stops rotating, and the unfolded foldable lumbar support serves as a wheelchair fixing device.

[0043] The foldable lumbar support of the embodiment of the present application is installed by the upper mounting frame, the folding locking mechanism and the upper fixed seat above the lumbar support plate; and by the lower mounting frame, the unfolding limiting mechanism and the lower fixed seat below the lumbar support plate. Since the lumbar support plate and the upper mounting frame and the lower mounting frame are rotatably connected; at the same time, the folding locking structure and the upper mounting frame, the unfolding limiting mechanism and the lower mounting frame are all rotatably connected, and the upper fixed seat and the folding locking mechanism, and the lower fixed seat and the unfolding limiting mechanism are all fixed. In this way, when an external force pushes the lumbar support plate, the lumbar support plate can drive the upper mounting frame and the lower mounting frame to rotate in the same direction, and when they rotate upward until the locking structure and the folding locking mechanism come into contact, they are locked together, that is, the foldable lumbar support is in a folded state, and the lumbar support plate serves as a position for standing passengers to lean on, thereby improving the comfort of standing passengers. After the folding locking mechanism and the locking structure are unlocked, the lumbar support plate rotates downward and unfolds under the action of gravity until the unfolding limit mechanism reaches the preset unfolding position and stops rotating, that is, the foldable lumbar support plate is in the unfolded state, and the lumbar support plate is used as a resting position on the outer side of the back of the wheelchair, and the space between the lumbar support plate and the fixed surface is used as a accommodating space for components such as the armrests of the wheelchair. In this way, the unfolded foldable lumbar support serves as a wheelchair fixing device. The foldable lumbar support of the vehicle of the present application, when in the folded state, the lumbar support plate serves as a position for standing passengers to lean on, thereby improving the comfort of standing passengers; when in the unfolded state, the unfolded foldable lumbar support can also serve as a wheelchair fixing device. The two states of the foldable lumbar support have different functions. When the wheelchair does not need to be fixed most of the time, the foldable lumbar support is folded up to save space.

[0044] In implementation, such as Figure 1 As shown, the lock structure 140 includes four corner locks; Figure 6 and Figure 7 As shown, the folding locking mechanism includes:

[0045] A lock slot body 310, a lock slot 311 is formed at the bottom of the lock slot body from bottom to top, a lock tongue entrance 312 is formed at one side of the lock slot body facing the waist support plate, and the lock tongue entrance 312 is connected to the lock slot 311, and a strip-shaped protrusion 313 is formed at the inner bottom end of the lock slot;

[0046] Among them, when the lumbar support plate 110 rotates upward to the relative position between the lock structure 140 and the lock tongue entrance 312, the lock tongue of the lock structure enters the lock groove 311 from the lock tongue entrance 312 and rotates. Under the action of the gravity of the lumbar support plate 110, the lumbar support plate 110 drives the lock tongue of the lock structure to be squeezed to the position above the strip protrusion 313 of the lock groove. The strip protrusion 313 is used to prevent the lock tongue of the structure from slipping from the bottom.

[0047] Through the cooperation of the four-corner lock, the lock slot and the lock tongue entrance, when the waist support plate rotates upward to the relative position between the lock structure and the lock tongue entrance, the lock tongue of the lock structure enters the lock slot from the lock tongue entrance and rotates. At this time, under the gravity of the waist support plate, the waist support plate drives the lock tongue of the lock structure to be pressed on the position above the strip protrusion of the lock slot, and the strip protrusion is used to prevent the lock tongue of the structure from slipping off from below.

[0048] In implementation, such as Figure 8 As shown, the upper mounting frame 120 is an upper mounting frame formed by a tubular structure; Figure 6 As shown, the folding locking mechanism also includes:

[0049] The upper rotating body 320 in the shape of a hollow column is fixed to the locking groove body 310 and is disposed opposite to the locking entrance 312 . The upper mounting frame 120 and the hollow portion of the upper rotating body 320 are rotatably connected.

[0050] The upper mounting frame is formed of a tubular structure, so that the upper mounting frame can be rotatably connected with the hollow portion of the upper rotating body, thereby realizing the rotatable connection between the upper mounting frame and the folding locking mechanism.

[0051] In implementation, the upper fixing seat is a hollow column-shaped upper fixing seat, and the hollow portion of the upper fixing seat is used to be fixed to a rod-shaped component in a vehicle;

[0052] The upper fixing seat and the folding locking mechanism are an integrated structure.

[0053] The upper fixing seat can be conveniently fixed to the rod-shaped component in the vehicle. The upper fixing seat and the folding locking mechanism form an integral structure, so that the number of structural parts is small and the installation is convenient.

[0054] In implementation, such as Figure 1 and Figure 2 As shown, the deployment limiting mechanism includes:

[0055] A hydraulic support rod 410, the upper end of which is used to be fixed to a fixed surface in the vehicle;

[0056] A support arm 420, wherein a first end of the support arm 420 is fixed to the lower mounting frame 120 and can rotate relative to the lower fixing seat 220, and a second end of the support arm 420 is rotatably connected to the lower end of the hydraulic support rod 410;

[0057] The hydraulic support rod 410 is retractable. When the hydraulic support rod is retracted, the support arm is driven to rotate upward, and then the lower mounting frame is driven to rotate upward, until the folding locking mechanism and the lock structure are locked together, so that the lumbar support board can be folded; when the hydraulic support rod is extended, the support arm is driven to rotate downward, and then the lower mounting frame is driven to rotate downward, until the hydraulic support rod is extended to a preset maximum length. At this time, under the action of the weight of the lumbar support board and the pressure of the passenger, the lumbar support board is kept at the lowest position.

[0058] The hydraulic struts themselves are retractable.

[0059] In implementation, such as Fig.13 As shown, the lower mounting frame 130 is a lower mounting frame formed by a tubular structure;

[0060] like Figure 3 , Fig. 9 , Fig.10 , Fig.11 and Fig.12 As shown, the lower fixing seat 220 includes:

[0061] Fixed plate 221;

[0062] Two lower fixing seat bodies 222 in the shape of hollow columns, the two lower fixing seat bodies being fixed on the fixing plate at intervals along the length direction;

[0063] A tubular three-section sliding membrane 223 is sleeved on the hollow part of the upper fixing seat body; wherein the hollow part of the three-section sliding membrane is fixed to the tubular structure of the lower fixing frame;

[0064] A buckle cover 224 with a notch in the middle, the buckle cover 224 and the fixing plate 221 fixedly cover the lower fixing seat body, and the notch faces the gap between the two upper fixing seat bodies;

[0065] The first end of the support arm 420 passes through the notch, and the first end of the support arm 420, the three-section sliding membrane 223, and the tubular structure of the lower fixing frame 130 are fixed together.

[0066] The three-stage sliding membrane avoids rigid contact between the hollow portion of the rigid upper fixing seat body and the tubular structure of the lower fixing frame.

[0067] In implementation, such as Figure 8 As shown, the upper mounting frame includes:

[0068] Two L-shaped upper mounting rods 121 arranged opposite to each other;

[0069] Two sections of upper inner connecting rods 122, the two upper inner connecting rods 122 are respectively fixed to the ends of the short arms of the two L-shaped upper mounting rods 121, and the two upper inner connecting rods 122 are rotatably connected to the hollow part of the upper rotating body 320, and the opening of the L-shaped upper mounting rod 121 faces one side of the lumbar support plate; wherein the interval between the two upper inner connecting rods 122 is used to avoid the lock structure;

[0070] The upper outer connecting rod 123 has two ends fixed to the ends of the long arms of the two L-shaped upper mounting rods 121, and the upper outer connecting rod 123 is rotatably connected to the upper through hole reserved in the lumbar support plate.

[0071] The L-shaped upper mounting rod allows the foldable lumbar support to be closer to the fixed surface when folded, with a smaller volume and less space. The inner connecting rods at both ends realize the rotational connection with the upper fixing seat, and the spacing between the two realizes the avoidance of the four-corner lock. The outer connecting rod realizes the rotational connection with the lumbar support plate.

[0072] In implementation, such as Fig.13 As shown, the lower mounting frame 130 includes:

[0073] Two L-shaped lower mounting rods 131 arranged opposite to each other;

[0074] A lower inner connecting rod 132, both ends of which are fixed to the ends of the short arms of the two L-shaped lower mounting rods 131, and the lower inner connecting rod 132 is rotatably connected to the hollow portion of the lower fixing seat body 222, and the opening of the L-shaped lower mounting rod 131 faces one side of the lumbar support plate;

[0075] The lower outer connecting rod 133 has two ends fixed to the ends of the long arms of the two L-shaped lower mounting rods 131, and the lower outer connecting rod 133 is rotatably connected to the lower through hole reserved by the lumbar support plate.

[0076] The L-shaped lower mounting rod enables the foldable lumbar support to be closer to the fixed surface when folded, with a smaller volume and less space occupied. The lower inner connecting rod realizes the rotation connection with the lower fixing seat on the one hand, and provides installation space for the hydraulic support rod on the other hand. The lower outer connecting rod realizes the rotation connection with the lumbar support plate.

[0077] In practice, the lumbar support plate includes a frame and a soft package structure covering the frame.

[0078] The frame serves as the supporting structure of the lumbar support board. The soft packing structure wrapped outside the frame makes the passenger feel more comfortable when leaning on it; at the same time, when the outer side of the back of the wheelchair is against the lumbar support board, it has a mobile buffer; in addition, when the four corner locks and the lock slot are locked, the soft packing structure of the lumbar support board makes the lock tongue of the lock structure squeezed above the strip protrusion of the lock slot, preventing the lock tongue of the lock structure from slipping out of the lock slot.

[0079] Embodiment 2

[0080] The vehicle of the embodiment of the present application includes the foldable lumbar support described in the first embodiment.

[0081] In the description of the present application and its embodiments, it should be understood that the orientation or positional relationship indicated by the terms "top", "bottom", "height", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0082] In the present application and its embodiments, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0083] In the present application and its embodiments, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0084] The disclosure above provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described above. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the various specific processes and material examples provided by the present application, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0085] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0086] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A foldable lumbar support for a vehicle, characterized in that: include: Lumbar support, upper mounting frame and lower mounting frame; The waist support plate is rotatably connected to the upper mounting frame and the lower mounting frame, and a locking structure is fixed to the back side of the waist support plate; An upper fixing seat, used for fixing to a fixing surface in a vehicle; A folding locking mechanism, fixed to the upper fixing seat and rotatably connected to the upper mounting frame; A lower fixing seat, used to be fixed to a fixing surface in the vehicle and located below the upper fixing seat; An expansion limiting mechanism is fixed to the lower fixing seat and is rotatably connected to the lower mounting frame; Wherein, under the action of external force, the lumbar support plate can drive the upper mounting frame and the lower mounting frame to rotate in the same direction, and the locking structure and the folding locking mechanism are contacted and locked together to realize the folding of the foldable lumbar support; after the folding locking mechanism and the locking structure are unlocked, the lumbar support plate rotates downward and unfolds until the unfolding limit mechanism reaches the preset unfolding position and stops rotating, and the unfolded foldable lumbar support serves as a wheelchair fixing device; The lock structure includes four-corner locks; the folding locking mechanism includes: A lock slot body, wherein a lock slot is formed at the bottom of the lock slot body from bottom to top, and a lock tongue entrance is formed at a side of the lock slot body facing the waist support plate, and the lock tongue entrance is connected to the lock slot, and a strip-shaped protrusion is formed at the inner bottom end of the lock slot; Among them, when the lumbar support plate rotates upward to the relative position between the lock structure and the lock tongue entrance, the lock tongue of the lock structure enters the lock groove from the lock tongue entrance and rotates, and under the action of the gravity of the lumbar support plate, the lumbar support plate drives the lock tongue of the lock structure to be squeezed to the position above the strip protrusion of the lock groove, and the strip protrusion is used to prevent the lock tongue of the lock structure from slipping from the bottom.

2. The foldable lumbar support according to claim 1, characterized in that: The upper mounting frame is an upper mounting frame formed by a tubular structure; The folding locking mechanism also includes: The upper rotating body in the shape of a hollow column is fixed to the locking groove body and arranged opposite to the locking entrance, and the upper mounting frame is rotatably connected to the hollow part of the upper rotating body.

3. The foldable lumbar support according to claim 2, characterized in that: The upper fixing seat is a hollow column-shaped upper fixing seat, and the hollow portion of the upper fixing seat is used to be fixed to a rod-shaped component in the vehicle; The upper fixing seat and the folding locking mechanism are an integrated structure.

4. The foldable lumbar support according to claim 3, characterized in that: The expansion limiting mechanism comprises: A hydraulic support rod, the upper end of which is used to be fixed to a fixed surface in the vehicle; A support arm, wherein a first end of the support arm is fixed to the lower mounting frame and can rotate relative to the lower fixing seat, and a second end of the support arm is rotatably connected to the lower end of the hydraulic support rod; Among them, the hydraulic support rod is capable of extension and retraction. When the hydraulic support rod is contracted, the support arm is driven to rotate upward, and then the lower mounting frame is driven to rotate upward until the folding locking mechanism and the locking structure are locked together to achieve the folding of the lumbar support board; when the hydraulic support rod is extended, the support arm is driven to rotate downward, and then the lower mounting frame is driven to rotate downward, until the hydraulic support rod is extended to a preset maximum length.

5. The foldable lumbar support according to claim 4, characterized in that: The lower mounting frame is a lower mounting frame formed by a tubular structure; The lower fixing seat comprises: Fixed plate; Two lower fixing seat bodies in the shape of hollow columns, the two lower fixing seat bodies being fixed on the fixing plate at intervals along the length direction; A tubular three-section sliding membrane is sleeved on the hollow part of the upper fixing seat body; wherein the hollow part of the three-section sliding membrane is fixed to the tubular structure of the lower mounting frame; A buckle cover with a notch in the middle, the buckle cover and the fixing plate fixedly cover the lower fixing seat body, and the notch faces the interval between the two upper fixing seat bodies; Wherein, the first end of the support arm passes through the notch, and the first end of the support arm, the three-section sliding membrane, and the tubular structure of the lower mounting frame are fixed together.

6. The foldable lumbar support according to claim 5, characterized in that: The upper mounting frame comprises: two L-shaped upper mounting rods disposed opposite to each other; Two sections of upper inner connecting rods, the two upper inner connecting rods are respectively fixed to the ends of the short arms of the two L-shaped upper mounting rods, and the two upper inner connecting rods are rotatably connected to the hollow part of the upper rotating body, and the opening of the L-shaped upper mounting rod faces one side of the lumbar support plate; wherein the interval between the two upper inner connecting rods is used to avoid the lock structure; An upper outer connecting rod, both ends of which are fixed to the ends of the long arms of the two L-shaped upper mounting rods, and the upper outer connecting rod is rotatably connected to the upper through hole reserved by the lumbar support plate.

7. The foldable lumbar support according to claim 6, characterized in that: The lower mounting frame comprises: two L-shaped lower mounting rods arranged opposite to each other; A lower inner connecting rod, both ends of which are fixed to the ends of the short arms of the two L-shaped lower mounting rods, and the lower inner connecting rod is rotatably connected to the hollow portion of the lower fixing seat body, and the opening of the L-shaped lower mounting rod faces one side of the lumbar support plate; The lower outer connecting rod has two ends fixed on the ends of the long arms of the two L-shaped lower mounting rods, and the lower outer connecting rod is rotatably connected to the lower through hole reserved by the lumbar support plate.

8. The foldable lumbar support according to claim 1, characterized in that: The lumbar support plate comprises a frame and a soft packing structure covering the frame.

9. A vehicle, characterized in that: A foldable lumbar support comprising any one of claims 1 to 8.

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