Folding rotating shaft and folding vehicle-mounted table board

Abstract

The invention relates to a folding rotating shaft and a folding vehicle-mounted table board, and belongs to the technical field of vehicle-mounted accessories, the folding rotating shaft comprises a first fixed support, a second fixed support, a movable support and a rotating shaft, the first fixed support is provided with a first placing groove, and the second fixed support is provided with a second placing groove; the first placement groove and the second placement groove jointly form a containing space, the first fixed support and the second fixed support are embedded into the opposite sides of the two folded table plates respectively, the movable support is placed in the containing space, two rotating holes are formed in the movable support, and the two rotating shafts are arranged in the first placement groove and the second placement groove respectively. The rotating shaft is sleeved with a plurality of elastic pieces, the rotating shaft penetrates through the corresponding rotating holes, the elastic pieces are located in the rotating holes and abut against the inner wall of the movable support, and the movable support can rotate around the rotating shaft. The folding rotating shaft has the advantages that the abrasion degree is low, the service life of the folding rotating shaft is prolonged, and it is ensured that the durability and attractiveness of a product can be greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle accessories, in particular to a folding hinge and a folding vehicle table. BACKGROUND

[0002] The folding table in the vehicle is an important configuration in the modern car interior to improve the comfort and convenience of passengers, which is often found behind the backrest of the rear seats or the central armrest box, providing a temporary support platform for passengers to place items, eat or work. Its core function requires quick and stable deployment when needed, and smooth and compact folding when idle, to maximize the saving of space in the vehicle and maintain the appearance of the interior.

[0003] Currently, the mainstream technical solution to realize the folding function of the vehicle table mainly relies on the hinge connection structure. Usually two or more hinged pieces (or called hinge pieces) are used, and the free ends of these hinged pieces are respectively connected with the frame of the table. Through the relative rotation between the hinged pieces, the folding or unfolding action of the table frame is driven.

[0004] However, the existing technology has significant defects and deficiencies: first, the durability of the hinge is poor. During the frequent opening and closing of the table, the buckle structure (or friction surface) used for positioning and maintaining the angle between the hinged pieces will quickly wear out due to repeated friction and stress concentration. This wear causes the positioning function of the hinge to fail quickly, resulting in the table shaking and drooping in the unfolded position, or accidentally opening in the folded position, which seriously shortens the service life of the table as a whole; second, the appearance and integration are low. The conventional folding hinge mechanism is usually large in size and needs to be installed externally (such as protruding from the edge or side of the table), which is difficult to achieve complete hidden embedded assembly. These exposed mechanical parts not only destroy the integrity and smoothness of the car interior design, but also look awkward and unattractive, and are easy to be knocked or hooked when passengers get in or out of the car or place objects, affecting user experience and the high-end feel of the product. There is currently no public technical solution that can be both durable and hidden to improve the appearance. SUMMARY

[0005] Therefore, the purpose of the present application is to provide a folding hinge and a folding vehicle table to solve the technical problems of poor durability and low appearance in the prior art.

[0006] The present application provides a folding hinge, comprising: a first fixed support, a first placement slot is formed in the first fixed support; Second fixed support, the second fixed support is equipped with second placement slot, second placement slot and first placement slot are communicated, first placement slot and second placement slot jointly constitute the accommodation space, first fixed support and second fixed support are embedded to the opposite side of the two folding table board respectively; Movable support, be placed in the accommodation space, be equipped with two rotating holes on movable support; Rotating shaft, be provided with two and be arranged in first placement slot and second placement slot respectively, the rotating shaft is equipped with a plurality of elastic sheet on, the rotating shaft passes through corresponding rotating hole, the elastic sheet is located in the rotating hole and the movable support inner wall and resist, the movable support can rotate around rotating shaft.

[0007] Optionally, the rotating shaft includes a shaft core and a shaft sleeve, the elastic sheet is sleeved on the shaft sleeve, and the shaft sleeve is located in the rotating hole; The first fixed support and the second fixed support are equipped with mounting holes, the mounting holes are communicated with the corresponding first placement slot or second placement slot, the shaft core passes through the mounting hole and passes through the shaft sleeve along the length direction of the shaft sleeve.

[0008] Optionally, the shaft sleeve includes a head and a rod, the elastic sheet is sleeved on the rod, the head is provided at one end of the rod, an outer thread is arranged on the side wall of the end of the rod away from the head, a nut is threadedly connected on the outer thread, and the elastic sheet is located between the nut and the head to limit movement of the elastic sheet on the rod.

[0009] Optionally, the gasket is sleeved on the shaft sleeve, and the gasket is arranged between the nut and the elastic sheet and between the head and the elastic sheet.

[0010] Optionally, an outer side wall of the head is provided with a clamping position, a limiting slot is formed in the movable support, the limiting slot is communicated with the rotating hole, when the shaft sleeve is installed in the rotating hole, the clamping position is located in the limiting slot, the limiting slot extends along the circumference of the shaft sleeve, when the movable support rotates, the clamping position slides along the length direction of the limiting slot until abuts against the slot wall of the limiting slot.

[0011] Optionally, a sawtooth is arranged around an outer side wall of one end of the shaft core, when the shaft core is inserted into the mounting hole and the shaft core, the sawtooth is embedded in the mounting hole.

[0012] Optionally, at least one side of the outer side wall of the shaft core is provided as a plane, when the shaft core is inserted into the mounting hole and the shaft sleeve, the plane is attached to the inner wall of the mounting hole and the inner wall of the shaft sleeve to limit rotation of the rotating shaft.

[0013] Optionally, at least two fixing holes are arranged on the first fixing support and the second fixing support, and the first fixing support and the second fixing support are provided with accommodating grooves at the fixing holes, and the fixing holes penetrate through the bottom of the accommodating grooves.

[0014] The application further provides a folding vehicle-mounted table plate, which comprises the folding hinge and further comprises a first table plate and a second table plate, the first table plate and the second table plate are both provided with a third accommodating groove, the third accommodating groove on the first table plate is communicated with the third accommodating groove on the second table plate, and the first fixing support and the second fixing support are respectively located in the corresponding third accommodating grooves and do not protrude from the second accommodating groove.

[0015] Optionally, a fourth accommodating groove is arranged on the first table plate and the second table plate, the fourth accommodating groove is located at the corner of the third accommodating groove and is communicated with the corresponding third accommodating groove, and when the first table plate or the second table plate is placed into the third accommodating groove, the corner part of the first table plate or the second table plate is located in the fourth accommodating groove.

[0016] The technical scheme of the application has the following advantages: 1. The folding hinge provided by the application embeds the first fixing support and the second fixing support into the side edge of the table plate, and the rotating hole in the movable support is matched with the hinge shaft with the elastic sheet on the first fixing support and the second fixing support, so that the rotating damping is generated by the elastic resistance between the elastic sheet and the inner wall of the rotating hole. At this time, only the outer wall of the elastic sheet and the inner wall of the rotating hole are in contact to generate wear. Compared with the hinge buckle structure, the wear degree is low, and the wear only occurs between the outer wall of the elastic sheet and the inner wall of the rotating hole, which only affects the damping effect of the elastic sheet, and does not cause poor positioning effect or loss of positioning function due to wear, thereby prolonging the service life of the folding hinge. In addition, the first fixing support and the second fixing support are both embedded in the table plate, so that the appearance of the product can be greatly ensured, and the durability and the appearance of the product can be greatly improved.

[0017] 2. The folding hinge provided by the application is matched by the sliding of the shaft sleeve head part and the limiting groove, and when the movable support is rotated to the limit position, the mechanical hard stop is formed to eliminate the risk of over-rotation. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the application, and therefore should not be regarded as a limitation to the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0019] Figure 1The overall structure schematic diagram of the folding vehicle-mounted table board of the present application when unfolded; Figure 2 The overall structure schematic diagram of the folding vehicle-mounted table board of the present application when unfolded; Figure 1 The enlarged view of the middle A part; Figure 3 The structure schematic diagram of the folding vehicle-mounted table board of the present application when folded; Figure 4 The structure schematic diagram of the table board of the present application; Figure 5 The structure schematic diagram of the folding pivot of the present application; Figure 6 The exploded view of the folding pivot of the present application; Figure 7 The schematic diagram of the movable support and the pivot in the connected state.

[0020] Explanation of reference signs: 1, first fixed support; 2, second fixed support; 3, first placing groove; 4, second placing groove; 5, movable support; 6, rotating hole; 7, pivot; 71, shaft core; 72, shaft sleeve; 721, head; 722, rod; 73, spring piece; 74, gasket; 75, external thread; 76, nut; 8, mounting hole; 9, clamping position; 10, limiting groove; 11, sawtooth; 12, fixed hole; 13, accommodating groove; 14, first table board; 15, second table board; 16, third placing groove; 17, fourth placing groove. DETAILED DESCRIPTION

[0021] The specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the description of the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0022] Unless otherwise explicitly specified and limited, the terms "arrange", "mount", "connect" and the like should be broadly understood, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0023] The terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the application is usually placed, and are only for the convenience of description and simplification of the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application.

[0024] The terms "first", "second", "third" and the like are only for distinguishing similar attributes of elements, and do not indicate or imply relative importance or a particular order.

[0025] The terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, in addition to including the listed elements, other elements not explicitly listed can also be included.

[0026] Embodiment 1 Referring to Figures 1-7 As shown, the application provides a folding hinge, comprising a first fixed support 1, a second fixed support 2, a movable support 5 and a hinge 7, a first placing groove 3 is formed on the first fixed support 1, a second placing groove 4 is formed on the second fixed support 2, the first placing groove 3 and the second placing groove 4 are located on the same side of the first fixed support 1 and the second fixed support 2, and the first placing groove 3 is close to the second fixed support 2 and extends towards the second fixed support 2 until it penetrates the side wall of the first fixed support 1, and the second placing groove 4 is close to the first fixed support 1 and extends towards the first fixed support 1 until it penetrates the second fixed support 2, when the first fixed support 1 and the second fixed support 2 are combined, the first placing groove 3 and the second placing groove 4 are communicated, and the first placing groove 3 and the second placing groove 4 together form a containing space for containing the movable support 5; At least two fixing holes 12 are formed on the first fixed support 1 and the second fixed support 2, and a containing groove 13 is formed on the first fixed support 1 and the second fixed support 2 at the fixing hole 12, the fixing hole 12 penetrates the groove bottom of the containing groove 13, the first fixed support 1 and the second fixed support 2 can be installed on the table plate through the fixing hole 12 and the bolt, and the containing groove 13 can accommodate the head of the bolt, avoiding the head of the bolt exposed outside, affecting the appearance.

[0027] The movable support 5 is placed in the containing space, and half of the movable support 5 is located in the first placing groove 3 and half of the movable support 5 is located in the second placing groove 4, two rotating holes 6 are formed on the movable support 5, and the two rotating holes 6 are arranged in parallel, when the movable support 5 is placed in the containing space, the two rotating holes 6 are located in the first placing groove 3 and the second placing groove 4 respectively; The rotating shaft 7 is also provided with two, two rotating shafts 7 are located in the first placing groove 3 and the second placing groove 4 respectively, and are connected with the corresponding first fixed support 1 and the second fixed support 2, the rotating shaft 7 is arranged along the length direction of the rotating hole 6, a plurality of elastic sheets 73 are sleeved on the rotating shaft 7, the plurality of elastic sheets 73 are arranged along the length direction of the rotating shaft 7, two rotating shafts 7 respectively extend into two rotating holes 6, so that the plurality of elastic sheets 73 on the rotating shaft 7 are located in the rotating hole 6 and abut against the inner wall of the movable support 5, the movable support 5 can rotate around the rotating shaft 7, so that the first fixed support 1 and the second fixed support 2 rotate and fold or open, and then the two table boards connected with the first fixed support 1 and the second fixed support 2 respectively are folded or opened.

[0028] By embedding the first fixed support 1 and the second fixed support 2 into the side edge of the table board, and embedding the rotating hole 6 in the movable support 5 to cooperate with the rotating shaft 7 with the elastic sheet 73 on the first fixed support 1 and the second fixed support 2, the elastic sheet 73 and the inner wall of the rotating hole 6 are elastically abutted to generate rotary damping, at this time, only the outer wall of the elastic sheet 73 and the inner wall of the rotating hole 6 are abutted to generate wear, compared with the hinge buckle structure, the wear degree is low, and the wear only occurs between the outer wall of the elastic sheet 73 and the inner wall of the rotating hole 6, only affects the damping effect of the elastic sheet 73, and will not cause poor positioning effect or lose the positioning function due to wear, thereby prolonging the service life of the folding rotating shaft 7, and the first fixed support 1 and the second fixed support 2 are embedded in the table board, so that the appearance of the product can be greatly guaranteed, and the durability and the appearance of the product can be greatly improved.

[0029] Specifically, the rotating shaft 7 comprises a shaft core 71 and a shaft sleeve 72, the shaft core 71 and the shaft sleeve 72 are coaxially arranged, a plurality of elastic sheets 73 are uniformly arranged and sleeved on the shaft sleeve 72, the shaft sleeve 72 is located in the rotating hole 6, the first fixed support 1 and the second fixed support 2 are both provided with a mounting hole 8, the mounting hole 8 is communicated with the corresponding first placing groove 3 or the second placing groove 4, when the shaft core 71 is placed into the first placing groove 3 or the second placing groove 4, the mounting hole 8 is coaxially arranged with the shaft core 71, one end of the shaft core 71 can extend into the mounting hole 8, and then enter the first placing groove 3 or the second placing groove 4 from the mounting hole 8, and then enter the shaft sleeve 72 along the length direction of the shaft sleeve 72 and pass out from the other end of the shaft sleeve 72, and then enter the first fixed support 1 and the second fixed support 2 again, by arranging the mounting hole 8 and arranging the rotating shaft 7 as the shaft core 71 and the shaft sleeve 72, the movable support 5 can be conveniently installed on the first fixed support 1 or the second fixed support 2, and the precision requirement is low, so that the processing cost can be reduced. Meanwhile, by arranging the shaft core 71 and the shaft sleeve 72, the rotating shaft 7 can be conveniently disassembled, when disassembly is needed, only the shaft core 71 needs to be taken out, and then the shaft sleeve 72 and the movable support 5 are taken down.

[0030] Further, the outer side wall of the shaft core 71 is provided as a plane, when the shaft core 71 is inserted into the mounting hole 8 and the shaft sleeve 72, the plane is in contact with the inner wall of the mounting hole 8 and the inner wall of the shaft sleeve 72, which limits the rotation of the rotating shaft 7 on the first fixed support 1 or the second fixed support 2, realizes the locking of the rotating shaft 7, eliminates the possibility of idling of the rotating shaft 7, and ensures that the damping force of the spring piece 73 is fully applied to the movable support 5.

[0031] In addition, the outer side wall of one end of the shaft core 71 is provided with a sawtooth 11, when the shaft core 71 is inserted into the mounting hole 8 and the shaft core 71, the sawtooth 11 is embedded in the mounting hole 8 and clamped in the mounting hole 8, which realizes the limitation of the shaft core 71 on the first fixed support 1 or the second fixed support 2, and the sawtooth 11 of the shaft core 71 is embedded in the inner wall of the mounting hole 8 to establish a anti-backlash interference fit, which resists the loosening of the shaft core 71 under high-frequency vibration, especially suitable for the continuous bumping working condition in vehicle driving.

[0032] As a specific embodiment, referring to Figures 5-6 The shaft sleeve 72 includes a head 721 and a rod 722, the cross section of the head 721 is larger than the cross section of the rod 722, and the spring piece 73 is sleeved on the rod 722. In this embodiment, there are 6 spring pieces 73 on each rod 722, but it is not limited to only 6, and other numbers can also be set. The head 721 is provided on one end of the rod 722 and is integrally formed with the rod 722. An external thread 75 is provided on the side wall of the end of the rod 722 away from the head 721. A nut 76 is threadedly connected to the external thread 75. The spring piece 73 is located between the nut 76 and the head 721, which limits the movement of the spring piece 73 on the rod 722. The rod 722 of the shaft sleeve 72 threadedly connects the nut 76 to compress the spring piece 73 in both directions with the head 721, which realizes the stepless adjustment of the pre-pressure of the spring piece 73, thereby changing the damping force. At the same time, it can compensate for the elastic attenuation after long-term use, maintain constant damping force, and adjust the damping force conveniently. Only the shaft core 71, the shaft sleeve 72 and the movable support 5 need to be removed, and the damping force of the spring piece 73 can be adjusted by rotating the nut 76.

[0033] Further, it also includes a gasket 74, which is sleeved on the shaft sleeve 72. Two gaskets 74 are provided on each shaft sleeve 72. One of the gaskets 74 is located between the nut 76 and the spring piece 73 and is in contact with the nut 76 and the spring piece 73. The other gasket 74 is located between the head 721 and the spring piece 73 and is in contact with the side wall of the head 721 and the spring piece 73.

[0034] As a specific embodiment, the outer side wall of the head 721 is provided with a clamping position 9, and the movable support 5 is provided with a limiting groove 10 on the inner wall of the movable support 5 at one end of the rotating hole 6. The limiting groove 10 is in communication with the rotating hole 6. When the shaft sleeve 72 is installed into the rotating hole 6, the clamping position 9 is located in the limiting groove 10. The limiting groove 10 is arranged in the circumferential direction of the shaft sleeve 72, so that the limiting groove 10 is arranged in a ring shape. When the movable support 5 rotates, the clamping position 9 slides along the length direction of the limiting groove 10 until the clamping position 9 abuts against the groove wall of the limiting groove 10. When the first fixed support 1 and the second fixed support 2 are folded, the clamping position 9 abuts against the groove wall at one end of the limiting groove 10. When the first fixed support 1 and the second fixed support 2 are unfolded and parallel, the clamping position 9 abuts against the groove wall at the other end of the limiting groove 10. Through the sliding cooperation of the clamping position 9 and the limiting groove 10 of the head 721 of the shaft sleeve 72, mechanical hard stop is formed when the movable support 5 rotates to the limit position, and the risk of over-rotation is eliminated.

[0035] Embodiment 2 Referring to Figures 1-7 As shown in the drawings, the embodiment provides a folding vehicle-mounted table board, which comprises the folding rotating shaft 7 in the embodiment 1, and further comprises a first table board 14 and a second table board 15. Two folding rotating shafts 7 are arranged between the first table board 14 and the second table board 15 to ensure the stability of folding. The first table board 14 and the second table board 15 are both provided with a third placing groove 16. The third placing groove 16 on the first table board 14 extends towards the second table board 15 until penetrating the side wall of the first table board 14. The third placing groove 16 on the second table board 15 extends towards the first table board 14 until penetrating the side wall of the second table board 15. The third placing groove 16 on the first table board 14 is in communication with the third placing groove 16 on the second table board 15. The first fixed support 1 and the second fixed support 2 are respectively located in the corresponding third placing groove 16 and do not protrude from the groove opening of the second placing groove 4.

[0036] By embedding the first fixed support 1 and the second fixed support 2 into the side edge of the table board and arranging the rotating shaft 7 with the spring sheet 73 on the first fixed support 1 and the second fixed support 2 in cooperation with the built-in rotating hole 6 of the movable support 5, the rotating damping is generated by the elastic abutment between the spring sheet 73 and the inner wall of the rotating hole 6. At this time, only the outer wall of the spring sheet 73 and the inner wall of the rotating hole 6 abut to generate wear. Compared with the hinge buckle structure, the wear degree is low. At the same time, the wear only occurs between the outer wall of the spring sheet 73 and the inner wall of the rotating hole 6, which only affects the damping effect of the spring sheet 73 and does not cause poor positioning effect or loss of positioning function due to wear. The service life of the folding rotating shaft 7 is improved. At the same time, the first fixed support 1 and the second fixed support 2 are both placed into the third placing groove 16 and do not protrude from the third placing groove 16, so that the appearance of the product can be greatly guaranteed, and the durability and the appearance of the product can be greatly improved.

[0037] The fourth placing groove 17 is arranged at the corner of the third placing groove 16 and communicates with the corresponding third placing groove 16, when the first table plate 14 or the second table plate 15 is placed into the third placing groove 16, the corner part of the first table plate 14 or the second table plate 15 is placed into the fourth placing groove 17, through the arrangement of the fourth placing groove 17, the corner of the first fixed support 1 and the second fixed support 2 can be given a containing space, so as to avoid that the first fixed support 1 and the second fixed support 2 cannot be embedded into the third placing groove 16 due to the process problem.

[0038] It should be noted that each of the embodiments in the specification is described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts between the embodiments can be referred to each other.

[0039] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A folding shaft, characterized in that: include: a first fixing bracket, wherein a first placement slot is formed on the first fixing bracket; a second fixing bracket, wherein the second fixing bracket is provided with a second placement slot, the second placement slot is communicated with the first placement slot, the first placement slot and the second placement slot together constitute an accommodating space, and the first fixing bracket and the second fixing bracket are respectively embedded in opposite sides of the two folded table boards; A movable bracket is placed in the accommodating space, and two rotation holes are provided on the movable bracket; There are two rotating shafts, which are respectively arranged in the first placement groove and the second placement groove. A plurality of spring plates are sleeved on the rotating shaft. The rotating shaft passes through the corresponding rotating hole. The spring plates are located in the rotating hole and contact the inner wall of the movable bracket. The movable bracket can rotate around the rotating shaft.

2. The folding shaft according to claim 1, wherein: The rotating shaft includes a shaft core and a shaft sleeve, the elastic piece is sleeved on the shaft sleeve, and the shaft sleeve is located in the rotating hole; The first fixing bracket and the second fixing bracket are provided with mounting holes, the mounting holes are communicated with the corresponding first placement groove or the second placement groove, and the shaft core passes through the mounting holes and passes through the shaft sleeve along the length direction of the shaft sleeve.

3. The folding shaft according to claim 2, wherein: The sleeve includes a head and a rod, the spring piece is sleeved on the rod, the head is arranged at one end of the rod, an external thread is provided on the side wall of the end of the rod facing away from the head, a nut is threadedly connected to the external thread, and the spring piece is located between the nut and the head to limit the movement of the spring piece on the rod.

4. The folding shaft according to claim 3, wherein: It also includes a gasket, which is sleeved on the shaft sleeve. Gaskets are provided between the nut and the spring piece and between the head and the spring piece.

5. The folding shaft according to claim 3, wherein: A latch is provided on the outer wall of the head, and a limiting groove is provided on the movable bracket. The limiting groove is connected to the rotating hole. When the sleeve is installed in the rotating hole, the latch is located in the limiting groove. The limiting groove is extended along the circumference of the sleeve. When the movable bracket rotates, the latch slides along the length direction of the limiting groove until it abuts against the wall of the limiting groove.

6. The folding shaft according to claim 2, wherein: Saw teeth are arranged around the outer side wall of one end of the shaft core. When the shaft core is inserted into the mounting hole and the shaft core, the saw teeth are embedded in the mounting hole.

7. The folding shaft according to claim 2, wherein: At least one side of the outer wall of the shaft core is set as a plane. When the shaft core is inserted into the mounting hole and the shaft sleeve, the plane fits against the inner wall of the mounting hole and the inner wall of the shaft sleeve to limit the rotation of the rotating shaft.

8. The folding shaft according to claim 1, wherein: The first fixing bracket and the second fixing bracket are both provided with at least two fixing holes, and the first fixing bracket and the second fixing bracket are provided with accommodating grooves at the fixing holes, and the fixing holes pass through the bottoms of the accommodating grooves.

9. A foldable car table, characterized in that: It includes the folding hinge as described in any one of claims 1-8, and also includes a first table board and a second table board, both of which are provided with a third placement groove, the third placement groove on the first table board is connected to the third placement groove on the second table board, and the first fixed bracket and the second fixed bracket are respectively located in the corresponding third placement groove and do not protrude from the notch of the second placement groove.

10. The foldable vehicle table according to claim 9, wherein: The first table board and the second table board are both provided with a fourth placement groove, and the fourth placement groove is located at the corner of the third placement groove and is connected to the corresponding third placement groove. When the first table board or the second table board is placed in the third placement groove, the corner part of the first table board or the second table board is located in the fourth placement groove.

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