Manual turntable device for car seat

Abstract

A manual turntable device for a car seat comprises a lower plate, a lower plate locking boss at the center, a lower plate locking boss through hole at the center of the boss, a plurality of locking grooves at the circumferential edge, and a plurality of lower plate mounting holes at the corners of the lower plate; an upper plate, an upper plate inner concave at the center, and a plurality of upper plate mounting holes at the corners; a fixed plate connected to the bottom of the upper plate; an upper ball rack, assembled between the lower plate locking boss and the upper plate inner concave; a lower ball rack, assembled between the lower plate locking boss and the fixed plate; a locking unit, comprising a rotating shaft and a locking block, the rotating shaft is passed through the interior of the upper plate, the locking block is extended toward the lower plate and can be engaged with the locking groove; a lower plate support plate, arranged between the lower plate and the upper plate, and a plurality of lower plate mounting holes are arranged on the lower plate mounting portion; an upper plate support plate, arranged between the lower plate support plate and the upper plate, and a plurality of upper plate mounting holes are arranged on the upper plate mounting portion. The device has compact structure, small gap, high strength, strong expansibility, wide application range, and stable operation.

Description

Technical Field

[0001] The invention belongs to the technical field of vehicle parts and specifically relates to a manual turntable device for a car seat. Background Art

[0002] Seats are one of the important components of cars. Different types of vehicles have different requirements for seats. For some small family cars with small space and low comfort requirements, most of them use two front seats that can move forward and backward and adjust the seat back angle, and fixed seats in the back row; for some business cars with large space and high comfort requirements, in addition to the common backrest adjustment, forward and backward movement, vertical lifting and other functions, it is also necessary to add seat rotation functions to facilitate passengers to enter. At the same time, this seat structure is not only conducive to users to carry out some business activities, but also convenient for passengers to negotiate face to face, and the riding comfort can be greatly improved; and with the continuous improvement of the level of intelligence in the automobile industry and the rapid development of unmanned driving technology, this kind of rotating seat that originally only existed in some large luxury business vehicles has become more and more the focus of current intelligent car research and development. The turntable mechanism of the vehicle seat is an important component to realize the rotation and locking of the seat. This turntable mechanism is generally divided into manual and electric types. The manual turntable is faster and cheaper to realize the rotation and adjustment of the seat, so it is widely used in various car seats.

[0003] There is no lack of relevant technical documents on this type of manual seat turntable in the public Chinese patent literature, and a few examples include CN202641426U (seat turntable device for commercial vehicles), CN210416308U (manual rotating seat turntable), CN208715024U (car seat turntable), etc., the above technical solutions have their own advantages, such as firm locking, stable operation, long service life of the entire turntable, etc., but all have the following common disadvantages of the existing manual turntable structure: First, since the existing turntable structure mostly adopts a single-body lower plate fixedly connected to the vehicle seat slide rail, and the single-body upper plate is connected to the vehicle seat basin frame, and a locking mechanism is used to realize the locking or separation of the lower plate and the upper plate, but this turntable structure can only be assembled with a specific vehicle seat, with poor adaptability, low self-strength, and cannot adapt to vehicle seats of different specifications and multiple performance requirements; secondly, when the lower plate and the upper plate of the existing turntable mechanism realize relative rotation, there will be vibration, unevenness, and low bearing capacity. Passengers will feel the shaking of the seat on bumpy roads, thereby affecting the riding experience; in addition, the existing turntable structure can only realize the rotation of a specific position of the seat, but cannot realize the convenient adjustment of multiple gears, and cannot meet the diversified adjustment needs of users, thus greatly affecting the use experience.

[0004] In view of the above-mentioned prior art, the applicant has made a useful design, and the technical solution to be introduced below is produced in this context. Summary of the invention

[0005] The purpose of the present invention is to provide a manual turntable device for automobile seats which has a compact structure, small gap, high strength, strong expandability, and is helpful to realize the connection between the lower plate and the upper plate and the vehicle seat slide rails of different specifications by opening multiple assembly holes on the lower plate and the upper plate and setting the lower plate support plate and the upper plate support plate to meet different actual use requirements, is conducive to ensuring that the upper plate and the lower plate can withstand axial loads in two directions by setting the upper ball rack and the lower ball rack to ensure the smooth operation, and is convenient to open multiple locking grooves at intervals on the lower plate to achieve multi-speed adjustment of the rotation angle of the vehicle seat.

[0006] The object of the present invention is achieved in this way. A manual turntable device for a car seat includes a lower plate structured in the shape of a square plate, and a circular lower plate locking boss is formed at the center of the lower plate, a lower plate locking boss through hole is opened at the center of the lower plate locking boss, and a plurality of locking grooves are opened at equal intervals at the circumferential edge of the lower plate locking boss, and a plurality of lower plate mounting holes are opened at the corners of the four sides of the lower plate; an upper plate structured in the shape of a square plate is arranged at the upper position of the lower plate and Its shape corresponds to the lower plate, and an upper plate concave portion corresponding to the lower plate locking boss is formed in the center of the upper plate, and a plurality of upper plate mounting holes are also provided at the four corners of the upper plate; a fixed plate is arranged at the center of the lower plate locking boss of the lower plate, and the fixed plate is fixedly connected to the bottom of the upper plate; an upper ball rack is slidably fitted between the lower plate locking boss of the lower plate and the upper plate concave portion of the upper plate; a lower ball rack is arranged below the lower plate and slidably fitted on the lower plate The locking member is provided with a locking protrusion of the lower plate and a fixed plate; a locking unit includes a rotating shaft and a locking block fixedly mounted on the shaft body of the rotating shaft, the rotating shaft is penetrated inside the upper plate, and the locking block is extended toward the lower plate and can be snapped into place with one of the locking grooves of the lower plate; a lower plate support plate is provided between the lower plate and the upper plate and is connected and fixed to the lower plate, and the outer contour shape of the lower plate support plate is adapted to the outer contour shape of the lower plate, and the lower plate support plate is provided at the four corners thereof. There is a lower plate assembly part, and a plurality of lower plate assembly holes are formed on the four lower plate assembly parts and at positions corresponding to the lower plate mounting holes of the lower plate; an upper plate support plate is arranged between the lower plate support plate and the upper plate and is connected and fixed to the upper plate, and the outer contour shape of the upper plate support plate is also adapted to the outer contour shape of the upper plate, and an upper plate assembly part is also formed at the four corners of the upper plate support plate, and a plurality of upper plate assembly holes are formed on the upper plate assembly part and at positions corresponding to the upper plate mounting holes.

[0007] In a specific embodiment of the present invention, a plurality of limiting arc parts are installed at the circumferential edge position of the lower plate locking boss of the lower plate. The limiting arc part has an arc plate and a plurality of limiting matching clips formed on the arc plate body. The plurality of limiting matching clips are arranged at equal intervals and can be snap-fitted with the corresponding plurality of locking grooves, thereby realizing the connection and fixation between the limiting arc part and the lower plate.

[0008] In another specific embodiment of the present invention, the fixed disk is constructed in a circular disk shape, and a circle of fixed disk hook edge is formed at the circumferential edge of the fixed disk, and a fixed disk center boss is formed at the center position of the fixed disk, and the fixed disk center boss is cooperated and installed in the aforementioned lower disk locking boss through hole, and a plurality of fixed disk positioning holes that penetrate the thickness direction are spaced apart on the fixed disk center boss, and a plurality of upper disk positioning holes that penetrate the thickness direction are formed on the upper disk inner recess of the upper disk and at positions corresponding to the plurality of fixed disk positioning holes, and positioning bolts that pass through the aforementioned fixed disk positioning holes are arranged in the aforementioned upper disk positioning holes, thereby realizing the positioning connection between the fixed disk and the upper disk.

[0009] In another specific embodiment of the present invention, the upper ball rack has an upper retaining frame and a plurality of upper balls. The upper retaining frame is of an annular structure and a plurality of upper ball accommodating grooves are provided on the upper retaining frame at equal intervals. The plurality of upper balls are respectively embedded in the corresponding upper ball accommodating grooves and can roll therein. The upper and lower ends of the plurality of upper balls respectively protrude out of the upper ball accommodating grooves and respectively slide together with the lower plate surface and the upper plate surface.

[0010] In another specific embodiment of the present invention, the lower ball rack also has a lower retaining frame and a plurality of lower balls. The lower ball rack is entirely arranged in the fixed plate hook edge of the fixed plate. The lower retaining frame also has an annular structure and a plurality of lower ball embedding grooves are equidistantly spaced at the circumferential edge of the lower retaining frame. The plurality of lower balls are respectively embedded in the corresponding lower ball embedding grooves and can roll therein. The plurality of lower balls protrude out of the lower retaining frame and are all rollingly engaged with the lower surface of the lower plate, and the plurality of lower balls are also rollingly engaged with the fixed plate hook edge.

[0011] In another specific embodiment of the present invention, a circle of upper plate flange extending toward the lower plate is formed at the circumferential edge of the upper plate, a rotation shaft clearance hole is provided on the upper plate flange, the rotation shaft of the locking unit passes through the rotation shaft clearance hole, and a rotation shaft positioning groove is also formed on the upper plate support plate, the rotation shaft is positioned in the rotation shaft positioning groove; and at least one locking block clearance groove is also provided on the main body of the upper plate, and the locking block is accommodated in the locking block clearance groove.

[0012] In a further specific embodiment of the present invention, an unlocking portion is formed at an end position of the rotating shaft of the locking unit away from the locking block; and a return torsion spring is also provided on the shaft body of the rotating shaft and at a position close to the locking block, and a return torsion spring positioning hole is opened on the upper plate and at a position corresponding to the return torsion spring, a return torsion spring limiting plate is sleeved on the shaft body of the rotating shaft and at an end position corresponding to the return torsion spring, the return torsion spring limiting plate is mounted on one side edge position of the return torsion spring positioning hole, and a return bolt is also inserted on the shaft body of the rotating shaft and at a position corresponding to the end position of the return torsion spring away from the return torsion spring limiting plate, the return bolt protrudes out of the return torsion spring positioning hole of the upper plate, and one end spring foot of the return torsion spring is hooked on the return bolt.

[0013] In a more specific embodiment of the present invention, four lower plate assembly portions of the lower plate support plate are convexly provided with a lower plate support plate clamping foot on one side surface facing the lower plate, and a lower plate connecting clamping hole is opened at the four corners on the lower plate and at the positions corresponding to the four lower plate support plate clamping feet. The lower plate support plate clamping feet are clamped and installed together with the lower plate connecting clamping holes, thereby realizing the positioning connection between the lower plate support plate and the lower plate body.

[0014] In yet another specific embodiment of the present invention, four upper plate assembly portions of the upper plate support plate are also convexly provided with an upper plate support plate clamping foot on one side surface facing the upper plate, and an upper plate connecting clamping hole is provided at the four corners on the upper plate and at the positions corresponding to the four upper plate support plate clamping feet. The upper plate support plate clamping feet are clamped and installed together with the upper plate connecting clamping holes, thereby realizing the positioning connection between the upper plate support plate and the upper plate body.

[0015] In yet another specific embodiment of the present invention, the lower plate and the upper plate are both made of metal steel plates.

[0016] Due to the adoption of the above structure, the present invention has the following beneficial effects compared with the prior art: firstly, by providing a lower plate and an upper plate which are correspondingly installed together up and down, and the lower plate locking boss and the upper plate inner recess are also correspondingly provided, other components such as the lower plate support plate and the upper plate support plate can be arranged between the lower plate and the upper plate and in the space outside the lower plate locking boss and the upper plate inner recess, the overall structure is compact and the gap is small, which can effectively reduce the thickness of the device and improve the strength, and can also facilitate the installation of other vehicle seat assembly components; secondly, by providing a plurality of lower plate mounting holes at the corners of the lower plate and providing a lower plate support plate which can be connected to the lower plate, the lower plate support plate has a lower plate mounting part formed at its four corners, and the lower plate mounting part has a plurality of lower plate mounting holes corresponding to the lower plate mounting holes, the user can, according to the actual performance requirements and matching requirements of different vehicle seats, connect the lower plate mounting holes of the lower plate with the lower plate support plate by fitting fasteners through different lower plate mounting holes of the lower plate. The matching holes can realize the connection between the lower plate and the vehicle seat slide rails of different specifications, or realize the connection between the lower plate and the vehicle seat slide rails of different parts, so as to meet different actual use requirements. The setting of the upper plate and the upper plate support plate is similar, so that the turntable device has strong applicability and can meet the use requirements of vehicles of different models; thirdly, by setting the upper ball rack and the lower ball rack, the sliding cooperation between the lower plate and the upper plate and the lower plate and the fixed plate is realized, which is conducive to the use of the principle of two-way thrust ball bearings so that the upper plate and the lower plate can withstand axial loads in two directions, thereby limiting the axial displacement in two directions and ensuring the smooth operation; finally, the circumferential edge of the lower plate locking boss of the lower plate is provided with a plurality of locking grooves, and the user can drive the locking block of the locking unit to realize the card matching with one of the locking grooves according to his actual adjustment needs, so as to control the combination angle of the lower plate and the upper plate and the rotation angle of the vehicle seat, thereby achieving multi-gear adjustment of the vehicle seat, which is convenient and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention.

[0018] Figure 2 for Figure 1 Exploded perspective view of an embodiment.

[0019] In the figure: 1. lower plate, 11. lower plate locking boss, 111. lower plate locking boss through hole, 12. locking groove, 13. lower plate mounting hole, 14. limiting arc member, 141. arc plate, 142. limiting matching card strip, 15. lower plate connecting card hole; 2. upper plate, 21. upper plate inner concave part, 211. upper plate positioning hole, 212. positioning bolt, 22. upper plate mounting hole, 23. upper plate flange, 231. rotating shaft clearance hole, 24. locking block clearance groove, 25. reset torsion spring positioning hole, 26. upper plate connecting card hole; 3. fixed plate, 31. fixed plate hook edge, 32. fixed plate center boss, 321. fixed plate positioning Hole; 4. Upper ball rack, 41. Upper retaining frame, 411. Upper ball accommodating groove, 42. Upper ball; 5. Lower ball rack, 51. Lower retaining frame, 511. Lower ball fitting groove, 52. Lower ball; 6. Locking unit, 61. Rotating shaft, 611. Unlocking part, 612. Reset torsion spring limit plate, 613. Reset bolt, 62. Locking block, 63. Reset torsion spring; 7. Lower plate support plate, 71. Lower plate assembly part, 711. Lower plate assembly hole, 712. Lower plate support plate clamping foot; 8. Upper plate support plate, 81. Upper plate assembly part, 811. Upper plate assembly hole, 812. Upper plate support plate clamping foot, 82. Rotating shaft positioning groove. DETAILED DESCRIPTION

[0020] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings, but the description of the embodiments is not a limitation of the technical solution. Any changes in form rather than substance based on the concept of the present invention should be regarded as the protection scope of the present invention.

[0021] In the following description, all concepts related to directionality (or orientation) such as up, down, left, right, front and back are referring to the position state of the figure being described, and are intended to facilitate public understanding. Therefore, they should not be understood as special limitations on the technical solution provided by the present invention.

[0022] See also Figure 1 and Figure 2 , shows a manual turntable device for a car seat, comprising a lower plate 1 in the shape of a square plate, the lower plate 1 being fixedly connected to the vehicle seat slide rail, and a circular lower plate locking boss 11 being formed at the center of the lower plate 1, a lower plate locking boss through hole 111 being opened at the center of the lower plate locking boss 11, and a plurality of locking grooves 12 being opened at equal intervals at the circumferential edge of the lower plate locking boss 11, as shown in FIG. Figure 2As shown in the figure, 36 locking grooves 12 are evenly divided into 10 degrees at the circumferential edge of the lower plate locking boss 11, and a plurality of lower plate mounting holes 13 are provided at the four corners of the lower plate 1; an upper plate 2 in the shape of a square plate is also shown, which is arranged above the aforementioned lower plate 1 and has a shape corresponding to the lower plate 1, and an upper plate inner concave portion 21 is formed inwardly at the center position of the upper plate 2, and the upper plate inner concave portion 21 is arranged corresponding to the lower plate locking boss 11, and a plurality of upper plate mounting holes 22 are also provided at the four corners of the upper plate 2; a fixing plate 3 is also shown, which cooperates with the lower plate locking boss 11 arranged on the aforementioned lower plate 1 The fixing plate 3 is fixedly connected to the bottom of the upper plate 2, and the fixing plate 3 is also fixedly connected to the vehicle seat basin frame; an upper ball rack 4 is also shown, which is slidably fitted between the lower plate locking boss 11 of the lower plate 1 and the upper plate inner recess 21 of the upper plate 2; a lower ball rack 5 is also shown, which is arranged below the lower plate 1 and slidably fitted between the lower plate locking boss 11 of the lower plate 1 and the fixing plate 3; a locking unit 6 is also shown, which includes a rotating shaft 61 and a locking block 62 fixedly mounted on the shaft body of the rotating shaft 61, the rotating shaft 61 is passed through the interior of the upper plate 2, and the locking block 62 faces The aforementioned lower plate 1 is extended and can be snap-fitted with the locking groove 12 of the lower plate 1; a lower plate support plate 7 is shown, which is arranged between the aforementioned lower plate 1 and the upper plate 2 and is connected and fixed to the lower plate 1, and the outer contour shape of the lower plate support plate 7 is adapted to the outer contour shape of the aforementioned lower plate 1, and a lower plate assembly portion 71 is formed at the four corners of the lower plate support plate 7, and a plurality of lower plate assembly holes 711 are formed on the four lower plate assembly portions 71 and at positions corresponding to the lower plate mounting holes 13 of the aforementioned lower plate 1. The user can match the lower plate mounting holes 13 of the lower plate 1 with the lower plate support plate 7 according to actual matching requirements by inserting fasteners into different lower plate mounting holes 13 of the lower plate 1 and the lower plate support plate 7. In the lower plate assembly hole 711, the lower plate 1 is connected to vehicle seat slide rails of different specifications, or the lower plate 1 is connected to different parts of the vehicle seat slide rails, so as to meet different actual use requirements; an upper plate support plate 8 is shown, which is arranged between the aforementioned lower plate support plate 7 and the upper plate 2 and is connected and fixed to the aforementioned upper plate 2. The outer contour shape of the upper plate support plate 8 is also adapted to the outer contour shape of the aforementioned upper plate 2. An upper plate assembly portion 81 is also formed at the four corners of the upper plate support plate 8, and a plurality of upper plate assembly holes 811 are formed on the upper plate assembly portion 81 and at positions corresponding to the aforementioned upper plate mounting holes 22.

[0023] Furthermore, a plurality of limiting arc-shaped members 14 are mounted on the circumferential edge of the lower plate locking boss 11 of the lower plate 1. The limiting arc-shaped member 14 comprises an arc-shaped plate 141 and a plurality of limiting matching clips 142 formed on the plate body of the arc-shaped plate 141. The plurality of limiting matching clips 142 are arranged at equal intervals and can be fitted with the corresponding plurality of aforementioned locking grooves 12, thereby achieving connection and fixation between the limiting arc-shaped member 14 and the lower plate 1; Figure 2 As shown in FIG, there are two limit arc members 14, which can limit the engagement position of the locking block 62 of the locking unit 6, thereby ensuring the rationality of the rotation position of the vehicle seat without interfering with other vehicle components.

[0024] In this embodiment, the aforementioned fixed disk 3 is constructed in a circular disk shape, and a circle of fixed disk hook edge 31 is formed at the circumferential edge of the fixed disk 3, and a fixed disk center boss 32 is formed at the center position of the fixed disk 3. The fixed disk center boss 32 is installed in the aforementioned lower disk locking boss through hole 111, and a plurality of fixed disk positioning holes 321 that penetrate the thickness direction are spaced apart on the fixed disk center boss 32. On the upper disk inner recess 21 of the aforementioned upper disk 2 and at positions corresponding to the plurality of fixed disk positioning holes 321, a plurality of upper disk positioning holes 211 that penetrate the thickness direction are provided, and positioning bolts 212 that pass through the aforementioned fixed disk positioning holes 321 are provided in the aforementioned upper disk positioning holes 211, thereby realizing the positioning connection between the fixed disk 3 and the upper disk 2.

[0025] Please continue to see Figure 1 and Figure 2The upper ball rack 4 is provided with an upper retaining frame 41 and a plurality of upper balls 42. The upper retaining frame 41 is annular in structure and a plurality of upper ball receiving grooves 411 are provided on the upper retaining frame 41 at equal intervals. The plurality of upper balls 42 are respectively embedded in the corresponding upper ball receiving grooves 411 and can roll therein. The upper and lower ends of the plurality of upper balls 42 respectively protrude out of the upper ball receiving grooves 411 and respectively slide with the surface of the lower plate 1 and the surface of the upper plate 2. Further, the lower ball rack 5 is also provided with a lower retaining frame 51 and a plurality of lower balls 52. The lower ball rack 5 is integrally provided on the aforementioned In the fixed plate hook edge 31 of the fixed plate, the aforementioned lower retaining frame 51 is also annularly structured and a plurality of lower ball embedding grooves 511 are equidistantly provided at the circumferential edge of the lower retaining frame 51, and the plurality of aforementioned lower balls 52 are respectively embedded in the corresponding lower ball embedding grooves 511, and the plurality of lower balls 52 protrude out of the aforementioned lower retaining frame 51 and are all rollingly engaged with the lower surface of the aforementioned lower plate 1, and the plurality of lower balls 52 are also rollingly engaged with the aforementioned fixed plate hook edge 31; and the aforementioned upper retaining frame 41 and the lower retaining frame 51 are both non-metallic parts, while the aforementioned upper balls 42 and the lower balls 52 are both metal spheres, preferably steel balls.

[0026] In this embodiment, a circle of upper plate flange 23 is formed at the circumferential edge of the upper plate 2, and a rotation shaft clearance hole 231 is opened on the upper plate flange 23, and the rotation shaft 61 of the locking unit 6 passes through the rotation shaft clearance hole 231, and a rotation shaft positioning groove 82 is also formed on the upper plate support plate 8, and the rotation shaft 61 is positioned in the rotation shaft positioning groove 82; and at least one locking block clearance groove 24 is also opened on the main body of the upper plate 2, and the locking block 62 is accommodated in the locking block clearance groove 24.

[0027] Furthermore, an unlocking portion 611 is formed at the end of the rotating shaft 61 of the locking unit 6, which is away from the locking block 62. The user can realize the overall rotation of the rotating shaft 61 by turning the unlocking portion 611. A return torsion spring 63 is also provided on the shaft of the rotating shaft 61 and at a position close to the locking block 62. A return torsion spring positioning hole 25 is provided on the upper plate 2 and at a position corresponding to the return torsion spring 63. A reset torsion spring limiting plate 612 is sleeved at one end of the reset torsion spring 63, and the reset torsion spring limiting plate 612 is mounted on one side edge of the aforementioned reset torsion spring positioning hole 25, and a reset bolt 613 is also inserted on the shaft body of the rotating shaft 61 and corresponding to the end of the aforementioned reset torsion spring 63 away from the reset torsion spring limiting plate 612. The reset bolt 613 protrudes out of the reset torsion spring positioning hole 25 of the aforementioned upper plate 2, and one end of the reset torsion spring 63 is hooked on the aforementioned reset bolt 613.

[0028] Please refer to Figure 2 A lower plate support plate clamping foot 712 is convexly provided on the surface of one side of the four lower plate assembly parts 71 of the aforementioned lower plate support plate 7 facing the aforementioned lower plate 1, and a lower plate connecting clamping hole 15 is opened at the four corners on the aforementioned lower plate 1 and at the positions corresponding to the aforementioned four lower plate support plate clamping feet 712. The aforementioned lower plate support plate clamping feet 712 are clamped and installed together with the aforementioned lower plate connecting clamping holes 15, thereby realizing the positioning connection between the lower plate support plate 7 and the lower plate 1 body.

[0029] Furthermore, on the surface of one side of the four upper plate assembly parts 81 of the upper plate support plate 8 facing the upper plate 2, there are also protruding upper plate support plate clamping feet 812, and at the four corners on the upper plate 2 and at the positions corresponding to the four upper plate support plate clamping feet 812, there are upper plate connecting clamping holes 26. The upper plate support plate clamping feet 812 are snap-fitted and installed together with the upper plate connecting clamping holes 26, so as to realize the positioning connection between the upper plate support plate 8 and the main body of the upper plate 2.

[0030] Preferably, the lower plate 1 and the upper plate 2 are both made of metal steel plates.

[0031] Please continue to see Figure 1 and Figure 2The working principle of the technical solution provided by the present invention is briefly described as follows: According to the known technology and common sense, the vehicle seat turntable device is installed between the slide rail of the vehicle seat and the seat pot of the vehicle seat frame, and the lower plate 1 is fixedly connected to the vehicle seat slide rail, and the upper plate 2 is connected to the vehicle seat pot frame. When the user needs to rotate the vehicle seat appropriately to change the orientation angle of the vehicle seat, the unlocking part 611 of the rotating shaft 61 is driven to make the rotating shaft 61 rotate as a whole, thereby making the locking block 62 mounted on the shaft body of the rotating shaft 61 disengage from the locking groove 12 on the lower plate 1. At this time, the turntable is in an unlocked state as a whole, and the upper plate 2 and the vehicle seat connected thereto are locked. The seat basin can rotate relative to the lower plate 1, so as to realize the overall rotation of the vehicle seat. At the same time, the reset bolt 613 on the rotating shaft 61 rotates together and realizes the compression of the reset torsion spring 63; when the seat rotation adjustment is completed, the user can loosen the unlocking part 611 of the rotating shaft 61. At this time, the reset spring 63 is reset and drives the reset bolt 613 and the rotating shaft 61 body to rotate inward, so that the locking block 62 and the corresponding locking groove 12 realize a new card-matching relationship, and the entire turntable device changes from the previous unlocked state to the locked state again. At this time, the lower plate 1 and the upper plate 2 are in a completely locked state, ensuring that the vehicle seat is fixed.

[0032] In summary, the technical solution provided by the present invention makes up for the shortcomings of the existing technology, successfully completes the invention task, and faithfully realizes the technical effects stated by the applicant in the technical effect column above.

Claims

1. A manual turntable device for a car seat, characterized in that: The invention comprises a lower plate (1) in the shape of a square plate, wherein a circular lower plate locking boss (11) is formed at the central position of the lower plate (1), a lower plate locking boss through hole (111) is provided at the central position of the lower plate locking boss (11), a plurality of locking grooves (12) are provided at equal intervals at the circumferential edge of the lower plate locking boss (11), and a plurality of lower plate mounting holes (13) are provided at the four corners of the lower plate (1); an upper plate (2) in the shape of a square plate, arranged at the upper position of the lower plate (1) and having a shape corresponding to that of the lower plate (1), and an upper plate inner concave portion (211) provided corresponding to the lower plate locking boss (11) is formed at the central position of the upper plate (2). ), and a plurality of upper plate mounting holes (22) are also provided at the corners around the upper plate (2); a fixed plate (3) is arranged at the center of the lower plate locking boss (11) of the lower plate (1), and the fixed plate (3) is fixedly connected to the bottom of the upper plate (2); an upper ball rack (4) is slidably mounted between the lower plate locking boss (11) of the lower plate (1) and the upper plate inner recess (21) of the upper plate (2); a lower ball rack (5) is arranged below the lower plate (1) and slidably mounted between the lower plate locking boss (11) of the lower plate (1) and the fixed plate (3); a locking unit (6) includes a rotating shaft (61) and a lock fixedly mounted on the shaft body of the rotating shaft (61). A stop block (62), wherein the rotating shaft (61) is arranged inside the upper plate (2), and the locking block (62) is extended toward the lower plate (1) and can be snap-fitted with one of the locking grooves (12) of the lower plate (1); a lower plate support plate (7), which is arranged between the lower plate (1) and the upper plate (2) and is connected and fixed to the lower plate (1), and the outer contour shape of the lower plate support plate (7) is adapted to the outer contour shape of the lower plate (1), and a lower plate assembly portion (71) is formed at the four corners of the lower plate support plate (7), and a plurality of lower plate assembly holes (711) are formed on the four lower plate assembly portions (71) and at positions corresponding to the lower plate mounting holes (13) of the lower plate (1); A limiting arc-shaped member (14) is also installed at the circumferential edge of the lower plate locking boss (11) of the lower plate (1). The limiting arc-shaped member (14) comprises an arc-shaped plate (141) and a plurality of limiting matching clips (142) formed on the plate body of the arc-shaped plate (141). The plurality of limiting matching clips (142) are arranged at equal intervals and can be snap-fitted with the plurality of locking grooves (12) corresponding to each other, thereby realizing the connection and fixation between the limiting arc-shaped member (14) and the lower plate (1); the number of the limiting arc-shaped members (14) is two, and the limiting arc-shaped members (14) can limit the snap-fitting position of the locking block (62) of the locking unit (6), thereby ensuring the rationality of the rotation position of the vehicle seat without interfering with other vehicle components.

2. A manual turntable device for a car seat according to claim 1, characterized in that It also includes an upper plate support plate (8), which is arranged between the lower plate support plate (7) and the upper plate (2) and is connected and fixed to the upper plate (2). The outer contour shape of the upper plate support plate (8) is also adapted to the outer contour shape of the upper plate (2). An upper plate assembly portion (81) is also formed at the four corners of the upper plate support plate (8), and a plurality of upper plate assembly holes (811) are formed on the upper plate assembly portion (81) and at positions corresponding to the upper plate mounting holes (22).

3. A manual turntable device for a car seat according to claim 1, characterized in that The fixed disk (3) is in the shape of a circular disk, and a circle of fixed disk hook edge (31) is formed at the circumferential edge of the fixed disk (3), and a fixed disk center boss (32) is formed at the center position of the fixed disk (3). The fixed disk center boss (32) is mounted in the aforementioned lower disk locking boss through hole (111), and a plurality of fixed disk positioning holes (321) penetrating the thickness direction thereof are arranged at intervals on the fixed disk center boss (32), and a plurality of upper disk positioning holes (211) penetrating the thickness direction thereof are arranged on the upper disk inner recess (21) of the upper disk (2) and at positions corresponding to the plurality of fixed disk positioning holes (321), and positioning bolts (212) passing through the aforementioned fixed disk positioning holes (321) are arranged in the aforementioned upper disk positioning holes (211), thereby realizing the positioning connection between the fixed disk (3) and the upper disk (2).

4. A manual turntable device for a car seat according to claim 1, characterized in that The upper ball rack (4) is provided with an upper retaining frame (41) and a plurality of upper balls (42); the upper retaining frame (41) is annular in structure and a plurality of upper ball receiving grooves (411) are provided on the upper retaining frame (41) at equal intervals; the plurality of upper balls (42) are respectively embedded in the corresponding upper ball receiving groove (411) and are capable of rolling therein; the upper and lower ends of the plurality of upper balls (42) respectively protrude out of the upper ball receiving groove (411) and are respectively slidably matched with the surface of the lower plate (1) and the surface of the upper plate (2).

5. A manual turntable device for a car seat according to claim 1, characterized in that The lower ball rack (5) also comprises a lower retaining frame (51) and a plurality of lower balls (52). The lower ball rack (5) is integrally arranged in the fixed plate hook edge (31) of the fixed plate (3). The lower retaining frame (51) also presents an annular structure and a plurality of lower ball fitting grooves (511) are evenly spaced at the circumferential edge of the lower retaining frame (51). The plurality of lower balls (52) are respectively embedded in the corresponding lower ball fitting grooves (511) and can roll therein. The plurality of lower balls (52) protrude out of the lower retaining frame (51) and are all rollingly matched with the lower surface of the lower plate (1). The plurality of lower balls (52) are also rollingly matched with the fixed plate hook edge (31).

6. A manual turntable device for a car seat according to claim 2, characterized in that A circle of upper plate flange (23) extending toward the lower plate (1) is formed at the circumferential edge of the upper plate (2), and a rotation shaft clearance hole (231) is provided on the upper plate flange (23), and the rotation shaft (61) of the locking unit (6) passes through the rotation shaft clearance hole (231), and a rotation shaft positioning groove (82) is also formed on the upper plate support plate (8), and the rotation shaft (61) is positioned in the rotation shaft positioning groove (82); and at least one locking block clearance groove (24) is also provided on the body of the upper plate (2), and the locking block (62) is accommodated in the locking block clearance groove (24).

7. A manual turntable device for a car seat according to claim 6, characterized in that An unlocking portion (611) is formed at an end position of the rotating shaft (61) of the locking unit (6) away from the locking block (62); and a return torsion spring (63) is also provided on the rotating shaft (61) at a position close to the locking block (62), and a return torsion spring positioning hole (25) is provided on the upper plate (2) at a position corresponding to the return torsion spring (63), and a return torsion spring positioning hole (25) is provided on the rotating shaft (61) at a position corresponding to the return torsion spring (63). A reset torsion spring limiting plate (612) is mounted on one side edge of the reset torsion spring positioning hole (25), and a reset bolt (613) is inserted on the shaft body of the rotating shaft (61) and corresponds to an end position of the reset torsion spring (63) away from the reset torsion spring limiting plate (612). The reset bolt (613) protrudes out of the reset torsion spring positioning hole (25) of the upper plate (2), and a spring foot at one end of the reset torsion spring (63) is hooked on the reset bolt (613).

8. The manual turntable device for a car seat according to claim 1, characterized in that A lower plate support plate clamping foot (712) is protruded on the surface of one side of the four lower plate assembly parts (71) of the lower plate support plate (7) facing the lower plate (1), and a lower plate connecting clamping hole (15) is opened at the four corners on the lower plate (1) and at the positions corresponding to the four lower plate support plate clamping feet (712). The lower plate support plate clamping feet (712) and the lower plate connecting clamping holes (15) are mounted together, thereby realizing the positioning connection between the lower plate support plate (7) and the lower plate (1) body.

9. A manual turntable device for a car seat according to claim 2, characterized in that On the surface of the four upper plate assembly parts (81) of the upper plate support plate (8) on one side facing the upper plate (2), there are also protruding upper plate support plate clamping feet (812), and at the four corners on the upper plate (2) and at the positions corresponding to the four upper plate support plate clamping feet (812), there are upper plate connecting clamping holes (26), and the upper plate support plate clamping feet (812) are clamped and installed together with the upper plate connecting clamping holes (26), so as to realize the positioning connection between the upper plate support plate (8) and the upper plate (2) body.

10. A manual turntable device for a car seat according to claim 1, characterized in that The lower plate (1) and the upper plate (2) are both made of metal steel plates.

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