Seat turntable and car

Abstract

The present invention discloses a seat turntable and a car. The seat turntable comprises a gap elimination mechanism (40) capable of vertically eliminating gaps. The slider (1, 1') thereof can slide radially relative to an upper rotating disk (10) to switch between an unlocking position and a gap elimination position. When the circumferential locking mechanism (30) releases the locking of the upper rotating disk (10), the slider (1, 1') can switch to the unlocking position. When the upper rotating disk (10) rotates to the locking position defined by the circumferential locking mechanism (30), the slider (1, 1') can switch to the gap elimination position. The force transmission member (2, 2') provides a force for switching to the unlocking position to the slider (1, 1'). Each wedge-shaped surface (201) is respectively adapted to the lower end of the slider (1, 1'). Each wedge-shaped surface (201) changes in a gradually increasing trend from the outside to the inside in the radial direction. The lower end of the slider (1, 1') switched to the gap elimination position is vertically pressed against the corresponding wedge-shaped surface (201). This solution can effectively eliminate vertical gaps through structural optimization and provide a good passenger experience.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical design, and in particular to a seat turntable and a car. Background Art

[0002] With the improvement of material living standards, cars have become the main means of transportation for family travel. As we all know, while family cars are favored by consumers, consumers have higher and higher requirements for car functions. Among them, the diversity of seat functions not only increases the seat choices of passengers, but also improves the riding experience.

[0003] A swivel seat is a type of car seat that can be rotated 360 degrees through a turntable to meet passengers' needs for functional diversity. In the prior art, the car seat turntable is limited by its own structure and cannot eliminate the vertical gap, that is, there is a vertical gap when the turntable is in the locked position, which causes the passengers to feel shaking and affects the riding experience.

[0004] In view of this, it is urgent to optimize the design of the seat turntable to overcome the above technical defects. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a seat turntable and a car, which can effectively eliminate the vertical gap through structural optimization, and on this basis can obtain a good passenger experience.

[0006] The seat turntable provided by the present invention comprises a lower turntable, an upper turntable which can rotate circumferentially relative to the lower turntable, and a circumferential locking mechanism which limits the locking position of the upper turntable; and further comprises a gap elimination mechanism which can vertically eliminate the gap, the gap elimination mechanism comprising at least two sliders, a force transmission member and at least two wedge-shaped surfaces arranged on the lower turntable; wherein at least two sliders are uniformly distributed below the upper turntable along the circumferential direction, each of the sliders can slide radially relative to the upper turntable and switch between an unlocking position and a gap elimination position, and is configured as follows: the circumferential locking mechanism When the upper rotating disk is unlocked, the slider can be switched to the unlocking position; when the upper rotating disk rotates to the locking position defined by the circumferential locking mechanism, the slider can be switched to the clearance-eliminating position; a transmission pair is provided between the force transmission member and the slider to provide the slider with a force for switching to the unlocking position; each of the wedge surfaces is respectively adapted to the lower end of the slider; each of the wedge surfaces changes in a gradually increasing trend from the outside to the inside in the radial direction, and is configured as follows: the slider switched to the clearance-eliminating position has its lower end pressed against the corresponding wedge surface along the vertical direction.

[0007] Preferably, the gap elimination mechanism also includes: at least two first elastic members, respectively arranged corresponding to at least two of the sliders; each of the first elastic members can be deformed under the action of the slider switched to the unlocking position, and store deformation energy to provide a force to switch to the gap elimination position to the slider; a second elastic member, which can be deformed and arranged between the force transmission member and the upper rotating disk, and can be deformed when the force transmission member provides a force to switch to the unlocking position to the slider, and store deformation energy to provide a reset force to the force transmission member.

[0008] Preferably, the gap elimination mechanism also includes: a sliding transition piece, which is fixed on the bottom surface of the upper rotating disk, and the main body of the slider is located between the upper rotating disk and the sliding transition piece; the sliding transition piece has a sliding groove that is slidably adapted to the corresponding slider, and the groove bottom of the sliding groove has a first through-hole, and the lower end of the slider extends downward through the first through-hole to adapt to the corresponding wedge-shaped surface; the first elastic member is deformably arranged between the corresponding slider and the radial outer groove wall of the sliding groove; the force transmission member can slide circumferentially relative to the sliding transition member and switch between an unlocking position and a gap elimination position; wherein the parts of the force transmission member and the slider that constitute the transmission pair are configured as follows: in the vertical projection plane, at least one of the two parts is an inclined surface arranged at an angle to the rotation tangent direction.

[0009] Preferably, the force transmission member is an overall annular sheet structure or a plurality of arc-shaped sheet structures to form the transmission pair with at least two of the sliding blocks respectively; the upper surface of the sliding transition member has a plurality of limit portions extending vertically, and the plurality of limit portions are respectively located on both sides of the radial direction of the force transmission member to form a radial limit of the force transmission member relative to the sliding transition member.

[0010] Preferably, in the part where the force transmission member and the slider constitute the transmission pair, one body is provided with an inclined groove, and the other body has a protrusion extending vertically and inserted into the inclined groove, and the groove wall of the inclined groove forms the inclined surface.

[0011] Preferably, the outer peripheral surface of the force transmission member and the end portion of the sliding block opposite to the outer peripheral surface of the force transmission member are both provided with the inclined surface constituting the transmission pair.

[0012] Preferably, a protruding column is provided on the radial outer groove wall of the slide groove, and a recess is provided on the end portion of the slider opposite to the protruding column; the first elastic member is a compression spring, one end of which is sleeved on the protruding column, and the other end is built into the recess; the second elastic member is a tension spring located above the upper rotating disk, and the force transmission member has a fixed portion extending upward through a second through-hole on the upper rotating disk, one end of the tension spring is connected to the upper rotating disk, and the other end of the tension spring is connected to the fixed portion of the force transmission member.

[0013] Preferably, the circumferential locking mechanism includes an unlocking bracket, a locking bracket and a locking pin; wherein, the body of the unlocking bracket is located above the upper rotating disk, and is pivotally connected to the upper rotating disk through a rotating shaft so as to rotate and switch between an unlocking position and a locking position; the lock bracket is fixedly arranged on the lower rotating disk, and a locking slot is provided on it; the locking pin is fixedly arranged at one end of the unlocking bracket, and the locking pin is inserted into a third through hole on the upper rotating disk, and the body of the locking pin located in the locking position can be placed in the locking slot to form a circumferential limit pair; and it is configured that: when the unlocking bracket is switched to the unlocking position, the body of the locking pin disengages from the locking slot.

[0014] Preferably, the circumferential locking mechanism also includes: a third elastic member, which is deformably arranged between the unlocking bracket and the upper rotating disk, and can be deformed under the action of the unlocking bracket switched to the unlocking position, and store deformation energy to provide a force to switch to the locking position to the unlocking bracket.

[0015] Preferably, the third elastic member is a torsion spring whose spring body is sleeved on the rotating shaft, and whose two working ends are respectively adapted to the unlocking bracket and the upper rotating disk.

[0016] Preferably, it also includes: a linkage mechanism, which can synchronously output the unlocking driving force to the force transmission member of the gap elimination mechanism and the unlocking bracket of the circumferential locking mechanism.

[0017] Preferably, the linkage mechanism includes: a first pull wire, a starting end of whose wire core is provided with a pulling portion, and an end of whose wire core is transmission-connected to the unlocking bracket to apply an unlocking force to the unlocking bracket; a second pull wire, a starting end of whose wire core is transmission-connected to the unlocking bracket, and an end of whose wire core is transmission-connected to the force transmission member to apply an unlocking force to the force transmission member.

[0018] Preferably, a connecting rod is provided between the unlocking bracket and the force transmitting member to drive the force transmitting member to slide circumferentially; and the first elastic member is a leaf spring.

[0019] Preferably, the upper surface of the lower rotating disk has a wedge-shaped block formed by an upward protrusion, and the wedge-shaped surface is formed on the wedge-shaped block.

[0020] The present invention also provides a car, comprising a rotating seat connected to the car chassis via a seat rotating plate, wherein the seat rotating plate is the seat rotating plate as described above.

[0021] With respect to the turntable for rotating seats, this solution proposes a seat turntable that can eliminate the vertical gap in the locked state. The gap elimination mechanism of the seat turntable uses a slider that can slide radially to adapt to the wedge surface on the lower rotating disk. Specifically, when the circumferential locking mechanism releases the lock on the upper rotating disk, the slider can be switched to the unlocked position driven by the force transmission member, and its lower end is separated from the wedge surface. In this state, the occupant can rotate the seat angle as needed; accordingly, when it reaches the locked position defined by the circumferential locking mechanism, the slider can be switched to the gap elimination position, and its lower end radially abuts against the corresponding wedge surface. Based on the characteristic that the wedge surface changes from the outside to the inside in a gradually increasing trend along the radial direction, as the slider gradually moves inward in the radial direction to press the wedge surface, a vertical pressure force is evenly distributed along the circumference. The vertical pressure force is formed between the slider and the wedge surface, thereby achieving the function of vertical gap elimination. Compared with the prior art, the present invention has the following beneficial technical effects:

[0022] Firstly, the seat turntable provided by the present invention has a gap elimination mechanism which can eliminate the vertical gap when in the locked position, thereby achieving vertical zero gap of the turntable, completely avoiding the possibility of the turntable shaking, and greatly improving riding comfort.

[0023] Secondly, a quick reset function is added in the preferred solution of the present invention. Specifically, the first elastic member can be deformed under the action of the slider switched to the unlocked position, and the second elastic member can be deformed when the force transmission member provides the force to switch to the unlocked position to the slider, and store deformation energy respectively to provide reset force to the slider and the force transmission member respectively. Therefore, after the seat is rotated to the locked position, the slider can be quickly reset to the clearance elimination position to meet the functional requirements of vertical zero clearance; at the same time, the force transmission member can also be quickly reset to the initial state to prepare for the next unlocking force to the slider. Overall, the operability of rotating the seat angle can be improved, further enhancing the user experience.

[0024] Again, in another preferred embodiment of the present invention, the turntable circumferential locking mechanism and the gap elimination mechanism have a linkage function, and the linkage mechanism is used to synchronously output the unlocking driving force to the force transmission member of the gap elimination mechanism and the unlocking bracket of the locking mechanism, that is, while releasing the seat rotation lock, the wedging relationship between the slider and the corresponding wedge surface is released; with this arrangement, the occupant can complete the locking relationship of the two mechanisms in one operation, and then quickly perform the seat rotation operation, which can further improve the operability of the function. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is an axonometric diagram of the seat turntable described in Example 1;

[0026] Figure 2 for Figure 1 An exploded schematic diagram of the assembly of the seat turntable shown in FIG.

[0027] Figure 3 for Figure 1 A top view of the seat turntable described in;

[0028] Figure 4 for Figure 1 A bottom view of the seat turntable;

[0029] Figure 5 for Figure 3 AA section view;

[0030] Figure 6 for Figure 5 A magnified view of part B;

[0031] Figure 7 A schematic diagram showing the assembly relationship between the slider and the force transmission member in the clearance elimination position is shown;

[0032] Figure 8 A schematic diagram showing the assembly relationship between the slider and the force transmission member in the unlocked position is shown;

[0033] Fig. 9 A schematic diagram of the assembly relationship of the unlocking bracket in the locked position is shown;

[0034] Fig.10 A schematic diagram of the assembly relationship of the unlocking bracket in the unlocking position is shown;

[0035] Fig.11 This is a schematic diagram of the structure of the seat turntable described in Example 2;

[0036] Fig.12 This is a schematic diagram of the structure of the seat turntable described in Example 3.

[0037] In the figure:

[0038] The upper rotating disk 10, the second through-hole 101, the connecting seat 102, the third through-hole 103, the lower rotating disk 20, the wedge-shaped surface 201, the wedge-shaped block 202, the circumferential locking mechanism 30, and the gap elimination mechanism 40;

[0039] Slider 1, slider 1′, protrusion 11, recess 12, force transmission member 2, fixing portion 21, inclined groove 22, inclined surface 23, force transmission member 2′, first elastic member 3, leaf spring 3′, second elastic member 4, sliding transition member 5, slide groove 51, first through opening 52, groove wall 53, limiting portion 54, boss 55, unlocking bracket 6, rotating shaft 61, locking pin 62, connecting rod 63′, lock bracket 7, locking slot 71, third elastic member 8, first pull wire 91, second pull wire 92, pulling portion 93. DETAILED DESCRIPTION

[0040] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0041] Embodiment 1:

[0042] See also Figure 1 and Figure 2 ,in, Figure 1 is an axonometric diagram of the seat turntable of this embodiment, Figure 2 for Figure 1 Exploded view of the assembly of the seat turntable shown in .

[0043] The seat turntable includes an upper rotating disk 10 and a lower rotating disk 20 which can rotate relative to each other in a circumferential direction. After assembly, the lower rotating disk 20 is fixed to a fixed component of the automobile chassis, and the upper rotating disk 10 can rotate relative to the lower rotating disk 20 along with the seat, and the locking position of the upper rotating disk 10 is limited by the circumferential locking mechanism 30; that is, when the upper rotating disk 10 is in the locked position, the circumferential locking mechanism 30 is used to limit its circumferential rotation relative to the lower rotating disk 20. When the user needs to adjust the seat angle, the circumferential locking mechanism 30 releases the locking relationship and the rotation operation can be performed.

[0044] In this solution, the gap elimination mechanism 40 capable of vertically eliminating the gap includes a slider 1, a force transmission member 2 and a wedge surface 201. As shown in the figure, four sliders 1 are evenly distributed along the circumference below the upper rotating disk 10, and the four wedge surfaces 201 are also evenly distributed along the circumference, respectively corresponding to the lower ends of the sliders 1; there is a transmission pair between the force transmission member 2 and the slider 1 to provide a force to switch to the unlocked position to the slider 1. Please refer to Figure 3 and Figure 4 , where the figure is Figure 1 A top view of the seat turntable, Figure 4 for Figure 1 A bottom view of the seat turntable described in .

[0045] Each slider 1 can slide radially relative to the upper rotating disk 10 and switch between an unlocking position and a gap-eliminating position, and is configured as follows: when the circumferential locking mechanism 30 releases the lock on the upper rotating disk 10, the slider 1 can be switched to the unlocking position driven by the force transmission member 2. In the unlocking position, the lower end of the slider 1 is disengaged from the corresponding wedge surface 201. In this state, the occupant can rotate the seat angle as needed; when the upper rotating disk 10 rotates to the locking position defined by the circumferential locking mechanism 30, the slider 1 can be switched to the gap-eliminating position; each wedge surface 201 changes from the outside to the inside in a radial direction with a gradually increasing trend, and is configured as follows: when the slider 1 is switched to the gap-eliminating position, as the slider 1 gradually moves radially inward to press the wedge surface 201, a vertical pressing force is evenly distributed along the circumference, and the vertical pressing force is formed between the slider 1 and the wedge surface 201, and the lower end of the slider 1 is vertically pressed against the corresponding wedge surface 201, thereby achieving a vertical zero gap of the rotating disk. Please refer to Figure 5 and Figure 6 ,in, Figure 5 for Figure 3 AA section view, Figure 6 for Figure 5 Enlarged view of part B.

[0046] Here, the wedge surface 201 can be configured independently of the lower rotating disk 20. For example, a wedge block (not shown in the figure) having the wedge surface 201 can be fixedly arranged on the lower rotating disk 20. After the parts are processed, they are fixed to the lower rotating disk 20 by welding or threaded fasteners. For the stamped upper and lower rotating disks, the wedge block 202 can be stamped at the same time. Figure 6 As shown, a wedge-shaped block 202 is protruded on the upper surface of the lower rotating disk 20, and a wedge-shaped surface 201 is formed on the wedge-shaped block 202; the structure is simple and the processing cost is controllable.

[0047] It should be noted that the number of matching sliders 1 and wedge surfaces 201 in the present solution can be set to other multiple groups as needed, rather than being limited to the four groups shown in the figure. It should be understood that at least two groups are set and a circumferentially uniform configuration is adopted to achieve the above-mentioned vertical zero gap function, while ensuring that no radial relative displacement occurs between the upper rotating disk 10 and the lower rotating disk 20, and the coaxial state is always maintained to ensure the actuation performance.

[0048] Of course, for multiple sliders 1, force transmission members 2 can be grouped as needed. In this solution, two sliders 1 form a group, and two force transmission members 2 are correspondingly provided. In this way, the force for switching to the unlocking position is provided to each group of sliders 1 in units of groups, and the transmission efficiency is better.

[0049] In order to further quickly reset automatically, the gap elimination mechanism can be further optimized. Figure 2As shown, there are four first elastic members 3 corresponding to the slider 1, and two second elastic members 4 corresponding to the force transmission member 2. Figure 7 and Figure 8 ,in, Figure 7 The figure shows the assembly relationship between the slider and the force transmission member in the clearance elimination position. Figure 8 A schematic diagram of the assembly relationship between the slider and the force transmission member in the unlocked position is shown.

[0050] Each first elastic member 3 can be deformed under the action of the slider 1 switched to the unlocking position, such as Figure 8 As shown, the deformation energy is stored to provide a force to switch to the anti-backlash position to the corresponding slider 1; of course, as Figure 7 As shown, the first elastic member 3 has a pre-installed deformation in the best assembly state to ensure that it is in a reliable clearance-eliminating position. Here, the first elastic member 3 can adopt different deformation mechanisms, such as but not limited to the compression spring shown in the figure, as long as the above functional requirements and product space design arrangements are taken into account.

[0051] Among them, each second elastic member 4 is deformably arranged between the force transmission member 2 and the upper rotating disk 10, and can further deform when the force transmission member 2 provides a force to switch to the unlocked position to the slider 1, and store deformation energy to provide a reset force to the corresponding force transmission member 2. Similarly, the second elastic member 4 can adopt different deformation mechanisms, such as but not limited to the tension spring shown in the figure, as long as the above-mentioned functional needs and product space design arrangements are taken into account. In order to simplify the drawing, the figure only shows one working end of the tension spring installed on the connecting seat 102 on the top surface of the upper rotating disk 10, and the other end is in a state to be installed (connected to the fixed part 21 of the force transmission member 2 after assembly).

[0052] During use, after the seat rotates and drives the upper rotating disk 10 to rotate to the locked position, the slider 1 can be quickly reset to the Figure 7 The anti-backlash position shown in FIG. 1 satisfies the functional requirement of vertical zero backlash; at the same time, the force transmission member 2 can also be quickly reset to Figure 7 The initial state shown. Overall, in order to prepare for transmitting the unlocking force to the slider 1 next time, the operability of rotating the seat angle can be improved.

[0053] In order to further improve the processing properties of the product, the gap elimination mechanism also includes a sliding transition piece 5 for providing an adaptable structure for installing components such as the sliding block 1 and the force transmission piece 2.

[0054] Please also see Figure 2 , Figure 7 and Figure 8In correspondence with the two force transmission members 2 in this solution, two sliding transition members 5 are provided. The sliding transition member 5 is fixed on the bottom surface of the upper rotating disk 10, and the main body of the slider 1 is located between the upper rotating disk 10 and the sliding transition member 5; the sliding transition member 5 has a sliding groove 51 that is slidably adapted to the corresponding slider 1. Figure 6 As shown, the bottom of the slide groove 51 has a first through-opening 52, and the lower end of the slider 1 extends downward through the first through-opening 52 to adapt to the corresponding wedge surface 201; accordingly, the first elastic member 3 can be deformably arranged between the corresponding slider 1 and the radial outer groove wall 53 of the slide groove 51.

[0055] Among them, the force transmission member 2 can slide circumferentially relative to the sliding transition member 5 and switch between the unlocking position and the clearance eliminating position; specifically, the parts constituting the transmission pair on the force transmission member 2 and the slider 1 are configured as follows: in the vertical projection plane, at least one of the two parts is an inclined surface set at an angle to the rotation tangent direction, thereby realizing the conversion between circumferential rotation and radial displacement.

[0056] In this solution, the force transmission members 2 are two arc-shaped force transmission members, and of course, according to different product design requirements, they can be set to other multiple configurations corresponding to the force transmission members 2. Each force transmission member and the two sliders 1 of the corresponding transmission group form a transmission pair, that is, one force transmission member drives two sliders 1 synchronously.

[0057] Furthermore, the upper surface of the sliding transition piece 5 has a plurality of limit portions 54 extending vertically, which are respectively located on both radial sides of the force transmission piece 2 to form radial limit of the force transmission piece 2 relative to the sliding transition piece 5 to ensure the accuracy of its rotation trajectory.

[0058] In addition, the above structure adapted to the slider 1 and the force transmission member 2 can also be directly arranged on the upper rotating disk 10; that is, the function of the sliding transition member 5 is integrated on the upper rotating disk 10, which can also meet the same dynamic matching relationship. In comparison, the sliding transition member 5 and the upper rotating disk 10 are processed separately, which has better processing technology.

[0059] It is understandable that the transmission pair between the force transmission member 2 and the slider 1 can be realized in different structural forms. In this solution, the transmission pair is constructed by using matching inclined grooves and protrusions.

[0060] As shown in the figure, the transmission pair of the force transmission member 2 is provided with an inclined groove 22, and the transmission pair of the slider 1 is provided with a vertically extending protrusion 11. Figure 7 and Figure 8 As shown, the projection 11 is inserted into the corresponding inclined groove 22, and the groove wall of the inclined groove 22 forms the inclined surface of the transmission pair. Figure 7The anti-backlash position shown in FIG. 1 is rotated counterclockwise, and the two protrusions 11 are pushed synchronously through the inclined groove 22 thereon, so that the slider 1 is switched to Figure 8 The unlocked position is shown. Obviously, the projection 11 is preferably a cylindrical structure to obtain smooth actuation performance.

[0061] Of course, the pre-deformed elastic member may have an unstable fitting relationship. As a further optimization, this solution configures a limiting structure for the first elastic member 3. Figure 6 As shown, a protrusion 55 is provided on the radial outer groove wall 53 of the slide groove 51, and a recess 12 is provided at the end of the slider 1 opposite to the protrusion 55; one end of the first elastic member 3 in the form of a compression spring is mounted on the protrusion 55, and the other end is embedded in the recess 12.

[0062] In fact, the end of the slider 1 opposite to the boss 55 can also be designed as a boss structure, which can also meet the assembly positioning function of the compression spring. In comparison, the slider 1 has a recess 12 for accommodating the compression spring, which can maximize the use of the internal space of the slider 1 and has a higher product integration.

[0063] In addition, the second elastic member 4 in the form of a tension spring is arranged above the upper rotating disk 10, and the internal structure of the rotating disk is more compact and reasonable. Figure 1 and Figure 2 As shown, the force transmission member 2 has a fixed portion 21 extending upward through a second through hole 101 on the upper rotating disk 10 , one end of the tension spring is connected to a connecting seat 102 on the upper surface of the upper rotating disk 10 , and the other end thereof is connected to the fixed portion 21 of the force transmission member 2 .

[0064] Furthermore, this solution adopts a circumferential locking mechanism 30 with better actuation performance. Figure 1 As shown, the circumferential locking mechanism 30 includes an unlocking bracket 6 , a locking bracket 7 and a locking pin 62 .

[0065] The unlocking bracket 6 is located above the upper rotating disk 10 and is pivotally connected to the upper rotating disk 10 via a rotating shaft 61 to rotate between an unlocking position and a locking position. Fig. 9 and Fig.10 ,in, Fig. 9 The figure shows the assembly relationship diagram of the unlocking bracket in the locked position. Fig.10 The figure shows the assembly relationship diagram of the unlocking bracket in the unlocking position. In order to express the internal related structure more clearly, Fig. 9 and Fig.10 The drawings are presented in a manner of removing the upper rotating disk 10 .

[0066] Among them, the lock bracket 7 is fixedly set on the lower rotating disk 20, and a locking slot 71 is opened on it; the locking pin 62 adapted to the locking slot 71 is fixedly set at one end of the unlocking bracket 6, and accordingly, the locking pin 62 is inserted into the third through hole 103 on the upper rotating disk 10. Based on the action characteristics of the locking pin 62 and the unlocking bracket 6 rotating synchronously around the rotating shaft 61 during the adjustment process, the size of the third through hole 103 needs to meet the swing stroke of the locking pin 8, and is preferably a waist-shaped through hole concentric with the rotating shaft 61.

[0067] The body of the locking pin 62 at the locking position is placed in the locking slot 71 to form a circumferential limit pair; Fig. 9 In the state shown, the upper rotating disk 10 cannot rotate relative to the lower rotating disk 20. Fig.10 When the seat is in the unlocked position, the body of the locking pin 62 is separated from the locking slot 71 . In this state, the upper rotating plate 10 can rotate with the seat according to the needs of the occupant.

[0068] Similarly, in order to enable the circumferential locking mechanism 30 to have an automatic reset function, a third elastic member 8 may be provided between the unlocking bracket 6 and the upper rotating disk 10. Fig. 9 As shown, the third elastic member 8 is deformably disposed between the unlocking bracket 6 and the upper rotating disk 10, and is switched to Fig.10 When the unlocking position is shown, the unlocking bracket 9 can further deform and store deformation energy to provide switching to the unlocking position. Fig. 9 The force of the locking position shown is applied to the unlocking bracket 6, so that the locking pin 62 is quickly and automatically reset and is placed in the locking slot 71 of the lock bracket 7 to form a circumferential locking limit relationship.

[0069] Here, the third elastic member 8 can also adopt different deformation mechanisms, such as but not limited to the torsion spring shown in the figure, as long as the above functional requirements and product space design arrangements are taken into account. As shown in the figure, the third elastic member 8 is a spring body sleeved on the rotating shaft 61, and its two working ends are respectively adapted to the unlocking bracket 6 and the upper rotating disk 10.

[0070] In addition, based on the operational requirements of good user experience, the circumferential locking mechanism 30 and the gap elimination mechanism 40 of the turntable may have a linkage function. Specifically, the linkage mechanism is used to synchronously output the unlocking driving force to the force transmission member 2 of the gap elimination mechanism 40 and the unlocking bracket 6 of the circumferential locking mechanism 30. That is, when the seat rotation lock is released, the wedging relationship between the slider 1 and the corresponding wedge surface 201 is released.

[0071] Specifically, this solution is configured with two levels of pull wires: a first pull wire 91 and a second pull wire 92. Among them, the starting end of the wire core of the first pull wire 91 is configured with a pulling portion 93, and the end of the wire core of the first pull wire 91 is transmission-connected to the unlocking bracket 6 to apply an unlocking force to the unlocking bracket 6. Among them, the starting end of the wire core of the second pull wire 92 is transmission-connected to the unlocking bracket 6, and the end of the wire core of the second pull wire 92 is transmission-connected to the force transmission member 2 to apply an unlocking force to the force transmission member 2. Here, based on the basic design of this solution having two force transmission members 2, the wire core of the second pull wire 92 realizes the pulling force on the corresponding force transmission member 2 through the two ends.

[0072] It should be noted that the matching positions of the unlocking bracket 6 with the end of the first pull wire 91 and the locking pin 62 are respectively located at the two side ends of the rotating shaft 61. It is understandable that the corresponding matching positions can also be located on the unlocking bracket 6 on the same side of the rotating shaft 61, as long as the locking linkage function requirements are met, it is within the scope of protection requested by this application.

[0073] In addition, the parts of the force transmission member 2 and the slider 1 that form the transmission pair may also adopt different structural configurations, as shown in the following embodiments.

[0074] Embodiment 2:

[0075] This solution has the same principle of eliminating backlash as the seat turntable described in Example 1. Fig.11 , this figure is a schematic diagram of the structure of the seat turntable described in this embodiment. In order to clearly show the differences and connections between the two schemes, the same functional components and structures in the figure are indicated by the same marks.

[0076] The force transmission member 2 of the present scheme can be slidably switched between an unlocking position and a clearance eliminating position along the circumferential direction relative to the sliding transition member; wherein, an inclined surface 23 is provided on the outer peripheral surface of the force transmission member 2 constituting the transmission pair, and an inclined surface 13 is correspondingly provided on the end portion of the slider 1 opposite to the outer peripheral surface of the force transmission member 2, that is, an inclined surface 13 adapted to the inclined surface 23 is provided on the end portion of the slider 1 constituting the transmission pair.

[0077] With such arrangement, when the force transmission member 2 shown in the figure rotates counterclockwise, the slider 1 is pushed to move radially outward, thereby separating the slider 1 from the wedge-shaped surface on the lower rotating disk; when the rotating disk is rotated to the locked position, the unlocking bracket is reset, and the force transmission member 2 rotates clockwise driven by the third elastic member, and the slider 1 moves radially inward driven by the first elastic member 3, and the slider 1 and the wedge-shaped surface on the lower rotating disk overlap and wedge tightly, thereby eliminating the vertical gap of the rotating disk.

[0078] The other functional components are the same as those in the embodiment and will not be described in detail here.

[0079] Embodiment three:

[0080] The difference between this solution and the first and second embodiments is that the force transmission member 2' in this solution is an overall ring-shaped sheet structure. Fig.12 , this figure is a schematic diagram of the structure of the seat turntable described in this embodiment. In order to clearly show the differences and connections between the various schemes, the same functional components and structures in the figure are indicated by the same marks.

[0081] In this solution, a connecting rod 63' is provided between the unlocking bracket 6 and the force transmission member 2' to drive the force transmission member 2' to slide circumferentially, that is, the linkage relationship between the two is realized through the connecting rod 63'. Fig.12 As shown, the unlocking bracket 6 pushes the integrated force transmission member 2' to rotate through the connecting rod 63', and the force transmission member 2' drives the eight sliders 1' to move radially outward, so that the sliders 1' are separated from the wedge-shaped surfaces on the lower rotating disk. When the rotating disk moves to the locked position, the unlocking bracket is reset, and the unlocking bracket drives the force transmission member 2' to reset through the connecting rod 63'. The slider 1' is quickly and automatically reset under the action of the force transmission member 2' and the leaf spring 3' (first elastic member), so that the slider 1' overlaps and weds with the wedge-shaped surfaces on the lower rotating disk, eliminating the vertical gap of the rotating disk.

[0082] It should be noted that the number of sliders 1' and wedge-shaped surfaces can be selected according to needs and can be arranged at intervals in the circumferential direction, for example but not limited to, eight sliders 1' are shown in the figure.

[0083] In addition, for the force transmission member 2' which is an annular sheet structure as a whole, the transmission pair constructed between it and the slider 1' can also be implemented by adopting the structure shown in the first or second embodiment.

[0084] The other functional components are the same as those in the above-mentioned embodiment and will not be described in detail here.

[0085] Embodiment 4:

[0086] In addition to the aforementioned seat turntable, this embodiment also provides a car, the rotating seat of the car is connected to the car chassis through the aforementioned seat turntable. It should be understood that the other functional components of the car are not the core invention of this application, and those skilled in the art can implement them based on the existing technology, so they will not be described in detail herein.

[0087] The directional terms "circumferential" and "radial" used in this article are defined based on the rotation center of the upper and lower rotating disks, and the directional term "vertical" used is defined based on the use status of the seat. It can be understood that the use of the above directional terms is only used to clearly describe the relative position relationship between the associated components or structures, and does not constitute an understanding limitation on the technical solution claimed for protection in this application.

[0088] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A seat turntable, comprising a lower turntable (20), an upper turntable (10) rotatable in a circumferential direction relative to the lower turntable (20), and a circumferential locking mechanism (30) for defining a locking position of the upper turntable (10); characterized in that: The invention also comprises a gap elimination mechanism (40) capable of vertically eliminating the gap, wherein the gap elimination mechanism (40) comprises: At least two sliders (1, 1') are evenly distributed below the upper rotating disk (10) along the circumferential direction, and each of the sliders (1, 1') can slide radially relative to the upper rotating disk (10) and switch between an unlocking position and a clearance-eliminating position, and are configured such that: when the circumferential locking mechanism (30) releases the lock on the upper rotating disk (10), the sliders (1, 1') can switch to the unlocking position; when the upper rotating disk (10) rotates to the locking position defined by the circumferential locking mechanism (30), the sliders (1, 1') can switch to the clearance-eliminating position; A force transmission member (2, 2') is provided with a transmission pair between the slider (1, 1') and the slider (1, 1') so as to provide a force for switching to an unlocking position to the slider (1, 1'); At least two wedge-shaped surfaces (201) arranged on the lower rotating disk (20) are respectively adapted to the lower ends of the sliders (1, 1′); each of the wedge-shaped surfaces (201) changes in a gradually increasing trend from the outside to the inside along the radial direction, and is configured such that the lower end of the slider (1, 1′) switched to the clearance-eliminating position is pressed against the corresponding wedge-shaped surface (201) in the vertical direction.

2. The seat turntable according to claim 1, characterized in that: The gap elimination mechanism (40) further comprises: At least two first elastic members (3, 3') are respectively arranged corresponding to at least two of the sliders (1, 1'); each of the first elastic members (3, 3') can be deformed under the action of the slider (1, 1') switched to the unlocking position, and store deformation energy to provide a force for switching to the clearance-eliminating position to the slider (1, 1'); The second elastic member (4) is deformably arranged between the force transmission member (2, 2') and the upper rotating disk (10), and can be deformed when the force transmission member (2, 2') provides a force for switching to an unlocking position to the slider (1, 1'), and stores deformation energy to provide a restoring force to the force transmission member (2, 2').

3. The seat turntable according to claim 2, characterized in that: The gap elimination mechanism (40) further comprises: A sliding transition piece (5) is fixed on the bottom surface of the upper rotating disk (10), and the main body of the slider (1, 1') is located between the upper rotating disk (10) and the sliding transition piece (5); the sliding transition piece (5) has a sliding groove (51) that is slidably matched with the corresponding slider (1, 1'), and the bottom of the sliding groove (51) has a first through-hole (52), and the lower end of the slider (1, 1') extends downward through the first through-hole (52) to match the corresponding wedge-shaped surface (201); The first elastic member (3, 3') is deformably arranged between the corresponding slider (1, 1') and the radial outer groove wall (53) of the slide groove (51); the force transmission member (2, 2') can slide circumferentially relative to the sliding transition member (5) to switch between an unlocking position and a clearance elimination position; The parts of the force transmission member (2, 2') and the slider (1, 1') that constitute the transmission pair are configured such that, in the vertical projection plane, at least one of the two parts is an inclined surface that forms an angle with the rotation tangent direction.

4. The seat turntable according to claim 3, characterized in that: The force transmission member is a force transmission member (2') of an overall annular sheet structure or a plurality of force transmission members (2) of arc-shaped sheet structures, so as to form the transmission pair with at least two of the sliding blocks (1, 1') respectively; the upper surface of the sliding transition member (5) has a plurality of limiting portions (54) extending vertically, and the plurality of limiting portions (54) are respectively located on both radial sides of the force transmission member (2, 2') to form radial limiting of the force transmission member (2, 2') relative to the sliding transition member (5).

5. The seat turntable according to claim 4, characterized in that: In the part where the force transmission member (2) and the slider (1) constitute the transmission pair, one body is provided with an inclined groove (22), and the other body has a protrusion (11) extending vertically and inserted into the inclined groove (22), and the groove wall (53) of the inclined groove (22) forms the inclined surface.

6. The seat turntable according to claim 4, characterized in that: The outer peripheral surface of the force transmission member (2) and the end portion of the slider (1) opposite to the outer peripheral surface of the force transmission member (2) are both provided with the inclined surface constituting the transmission pair.

7. The seat turntable according to any one of claims 4 to 6, characterized in that: The radial outer groove wall (53) of the slide groove (51) is provided with a protruding column (55), and the end of the slider (1) opposite to the protruding column (55) is provided with a recessed portion (12); the first elastic member (3) is a compression spring, one end of which is sleeved on the protruding column (55) and the other end is embedded in the recessed portion (12); the second elastic member (4) is a tension spring located above the upper rotating disk (10), and the force transmission member (2) has a fixed portion (21) extending upward through a second through-hole (101) on the upper rotating disk (10), one end of the tension spring is connected to the upper rotating disk (10), and the other end of the tension spring is connected to the fixed portion (21) of the force transmission member (2).

8. The seat turntable according to any one of claims 4 to 6, characterized in that: The circumferential locking mechanism (30) comprises: An unlocking bracket (6), the main body of which is located above the upper rotating disk (10) and is pivotally connected to the upper rotating disk (10) via a rotating shaft (61) so as to be rotatably switched between an unlocking position and a locking position; A lock bracket (7) is fixedly arranged on the lower rotating disk (20) and is provided with a locking slot (71); A locking pin (62) is fixedly arranged at one end of the unlocking bracket (6); the locking pin (62) is inserted into a third through hole (103) on the upper rotating disk (10); the body of the locking pin (62) located in the locking position can be placed in the locking slot (71) to form a circumferential limit pair; and is configured such that: when the unlocking bracket (6) is switched to the unlocking position, the body of the locking pin (62) is disengaged from the locking slot (71).

9. The seat turntable according to claim 8, characterized in that: The circumferential locking mechanism (30) further comprises: The third elastic member (8) is deformably arranged between the unlocking bracket (6) and the upper rotating disk (10), and can be deformed when the unlocking bracket (6) is switched to the unlocking position, and stores deformation energy to provide a force for switching to the locking position to the unlocking bracket (6).

10. The seat turntable according to claim 9, characterized in that: The third elastic member (8) is a torsion spring whose spring body is sleeved on the rotating shaft (61), and whose two working ends are respectively adapted to the unlocking bracket (6) and the upper rotating disk (10).

11. The seat turntable according to claim 10, characterized in that: Also includes: A linkage mechanism, wherein the linkage mechanism can synchronously output an unlocking driving force to a force transmission member (2) of the gap elimination mechanism (40) and an unlocking bracket (6) of the circumferential locking mechanism (30).

12. The seat turntable according to claim 11, characterized in that: The linkage mechanism comprises: A first pulling wire (91), the beginning of which is provided with a pulling portion (93), and the end of which is connected to the unlocking bracket (6) in a transmission manner so as to apply an unlocking force to the unlocking bracket (6); The second pulling wire (92) has a starting end of its wire core that is transmission-connected to the unlocking bracket (6), and a terminal end of its wire core that is transmission-connected to the force transmission member (2) to apply an unlocking force to the force transmission member (2).

13. The seat turntable according to claim 10, characterized in that: A connecting rod (63') is provided between the unlocking bracket (6) and the force transmission member (2') to drive the force transmission member (2') to slide circumferentially; and the first elastic member is a leaf spring (3').

14. The seat turntable according to claim 1, characterized in that: The upper surface of the lower rotating disk (20) has a wedge-shaped block (202) formed in an upward protrusion, and the wedge-shaped surface (201) is formed on the wedge-shaped block (202).

15. A car, comprising a swivel seat connected to the chassis of the car via a seat turntable, characterized in that: The seat turntable is the seat turntable according to any one of claims 1 to 14.

Images