A mechanism angle adjustment device and its application

Abstract

The present invention discloses a mechanism angle adjustment device and its application, comprising an outer ring, an inner ring coaxially arranged with the outer ring, at least one rolling body accommodating space formed between the outer ring and the inner ring; a locking assembly, comprising two retaining frames arranged on both sides of the inner ring and at least one group of rolling bodies, the retaining frames are provided with assembly grooves corresponding to the rolling bodies, one end of the rolling body is arranged in the rolling body accommodating space, and the other end is arranged in the assembly groove of the retaining frame; the rolling body accommodating space includes two relative wedge-shaped areas, wherein the retaining frame moves radially, driving at least one group of rolling bodies to enter the limiting ends of the two relative wedge-shaped areas, locking the inner ring and the outer ring so that they cannot rotate relative to each other; on the contrary, when at least one group of rolling bodies is away from the limiting ends of the wedge-shaped areas, the inner ring and the outer ring are unlocked. The mechanism angle adjustment device of the present invention realizes locking through the wedging action of the rolling bodies in the wedge-shaped areas, and the locking is firm, small in size, high in sensitivity, easy to control, convenient to operate, and labor-saving.

Description

Technical Field

[0001] The invention relates to a mechanism angle adjustment device, in particular to a mechanism angle adjustment device suitable for adjusting the angle of an armrest of a car seat, adjusting the angle of a backrest, and rotating the seat base. Background Art

[0002] At present, the armrests of seats in cars, high-speed trains, airplanes, etc. are installed on the side wing shafts of the seats. There are several types of seat armrest position adjustment: pin shaft and slide slot to control the rotation of the armrest; ratchet pawl control; gear pawl control. These schemes can only guarantee a few fixed angle adjustments. From the stowed position, it can be placed in 1 to 4 positions by rotating from bottom to bottom. Relative to the seat back, these positions are fixed at several angles, which cannot meet the comfort requirements of everyone and cannot be adjusted to the comfortable angle required by some people.

[0003] On the other hand, the angle adjuster composed of a ratchet or gear mechanism is prone to noise, looseness, and failure to lock during use, and cannot switch smoothly and flexibly between different positions.

[0004] When the existing armrest is folded vertically, its position is fixed by the friction between the armrest and the side wings of the seat back. This restraint on the armrest is not reliable. After the armrest has been used for a period of time, when the car brakes suddenly in its vertically folded state, the armrest is easy to loosen from the vertical position, causing injury to the user and causing safety problems. Summary of the invention

[0005] The present invention provides a mechanism angle adjustment device, which can solve the above-mentioned defects in the prior art.

[0006] The technical solution of the present invention is as follows:

[0007] A mechanism angle adjustment device, comprising:

[0008] An outer ring (2), and an inner ring (1) coaxially arranged with the outer ring (2), wherein at least one rolling element accommodating space (3) is formed between the outer ring (2) and the inner ring (1);

[0009] A locking assembly (40) comprises a retaining frame (4) and at least one group of rolling elements (5), and is used to lock or unlock the relative rotation of the outer ring (2) and the inner ring (1) in the circumferential direction; the group of rolling elements comprises two rolling elements (5), the retaining frame (4) is provided with a mounting groove (41) corresponding to the at least one group of rolling elements (5), and one retaining frame (4) is provided on each side of the inner ring (1); one end of the at least one group of rolling elements (5) is assembled with the mounting groove (41) of one of the retaining frames (4), and the other end of the at least one group of rolling elements (5) passes through the inner ring (1) and is assembled with the mounting groove (41) of the other retaining frame (4);

[0010] The at least one rolling element accommodating space (3) comprises two opposite wedge-shaped areas, each of the wedge-shaped areas extends in the circumferential direction, each of the wedge-shaped areas comprises a limiting end (31), the size of the limiting end (31) in the radial direction is smaller than the size of the rolling element (5) in a certain area, and the radial space size of the at least one rolling element accommodating space (3) increases to exceed the radial size of the rolling element (5) in the direction away from the limiting end (31) in the circumferential direction;

[0011] A driving assembly (60) connected to the retaining frame (4) and used to drive the retaining frame (4) to move radially;

[0012] Wherein, when the retaining frame (4) moves in the radial direction and drives the at least one group of rolling elements (5) to enter the limiting ends (31) of the at least two opposite wedge-shaped areas respectively, the inner ring (1) and the outer ring (2) are locked and cannot rotate relative to each other;

[0013] When the retaining frame (4) moves radially and drives the at least one group of rolling elements (5) to move away from the limiting ends (31) of the at least two opposite wedge-shaped areas, the outer ring (2) and the inner ring (1) are unlocked and can rotate relative to each other.

[0014] When at least one group of rolling bodies (5) enters the limiting ends (31) of the oppositely arranged wedge-shaped areas, the clockwise and counterclockwise rotation of the outer ring (2) and the inner ring (1) are locked respectively.

[0015] The rolling body is configured as a cylindrical rolling body, and the cylindrical rolling body has a certain length. If the cylindrical rolling body with a certain length is driven unilaterally by a retaining frame, one end of the cylindrical rolling body is subjected to force, and the cylindrical rolling body cannot be driven to move well. Therefore, the cylindrical rolling body is driven bilaterally by two retaining frames, which can ensure that locking and unlocking are quick, smooth and stable.

[0016] Preferably, the outer ring (2) is configured to be annular, the outer circumference of the inner ring (1) includes at least one linear plane, the rolling body accommodating space (3) is formed between each of the linear planes and the inner circumference of the outer ring (2), and the two opposite wedge-shaped areas are formed at both ends of the rolling body accommodating space (3) along the circumferential direction; the locking assembly (40) includes a group of rolling bodies (5) which are arranged at both ends of the rolling body accommodating space (3).

[0017] Specifically, the linear plane of the inner ring (1) can also be set as an arc-shaped edge, and the arc-shaped edge of the inner ring (1) and the inner circumference of the outer ring (2) form the at least one rolling body accommodating space (3), which is not limited here.

[0018] Preferably, the assembly groove of the retaining frame (4) includes a first functional surface (45) and a second functional surface (46) arranged opposite to each other, and one of the rolling bodies in the group of rolling bodies is assembled in the space between the first functional surface (45) and the second functional surface (46); and includes a third functional surface (47) and a fourth functional surface (48) arranged opposite to each other, and another rolling body in the group of rolling bodies is assembled in the space between the third functional surface (47) and the fourth functional surface (48); the first functional surface (45), the second functional surface (46), the third functional surface (47), and the fourth functional surface (48) are all arranged at an angle to the radial direction, and the angle does not include a right angle and a flat angle.

[0019] When the retaining frame (4) moves close to the axis, the first functional surface (45) and the third functional surface (47) act on the two rolling elements (5) respectively, and the first functional surface (45) and the third functional surface (47) have a certain curvature; when the retaining frame (4) moves away from the axis, the second functional surface (46) and the fourth functional surface (48) act on the two rolling elements (5) respectively, and the second functional surface (46) and the fourth functional surface (48) have a certain curvature.

[0020] The angles between the first functional surface (45), the second functional surface (46), the third functional surface (47), and the fourth functional surface (48) and the radial direction can be selected according to actual needs and are not limited here.

[0021] Preferably, the assembly groove of the retaining frame (4) includes an arc-shaped groove (41), the assembly groove of the retaining frame (4) includes an arc-shaped groove (41), and the arc-shaped groove (41) includes the first functional surface (45), the second functional surface (46), the third functional surface (47) and the fourth functional surface (48).

[0022] Preferably, the assembly groove of the retaining frame (4) includes two independent first assembly grooves (49) and second assembly grooves (490), and two rolling elements in the group of rolling elements are respectively assembled in the first assembly groove (49) and the second assembly groove (490); the first assembly groove (49) includes a first functional surface (45) away from the axis and a second functional surface (46) close to the axis, and the second assembly groove (490) includes a third functional surface (47) away from the axis and a fourth functional surface (48) close to the axis.

[0023] Preferably, one of the retaining frames (4) in the group of locking assemblies (40) is provided with a fixing pin (42) on a side surface close to the inner ring (1), and correspondingly, the other retaining frame (4) is provided with a pin hole (421) cooperating with the fixing pin (42), and the inner ring (1) is provided with a strip groove (12) in the radial direction; the fixing pin (42) passes through the strip groove (12) and is connected with the pin hole (421) of the other retaining frame (4).

[0024] The strip grooves limit the movement of the retaining frame to the radial direction, restricting its deviation, affecting the movement direction of the rolling body, and affecting the stability of unlocking or locking. At the same time, the retaining frame is connected to the pin hole (421) through the fixing pin, ensuring the consistency of the movement of the two retaining frames.

[0025] Preferably, the two retaining frames (4) in the set of locking assemblies (40) are further connected via a connecting pin (43), thereby further ensuring the consistency of movement of the two retaining frames.

[0026] Preferably, at least two rolling body accommodating spaces (3) are provided, evenly arranged between the outer ring (2) and the inner ring (1), and the locking assembly (40) is arranged in a manner adapted to the rolling body accommodating spaces (3). The more the number of rolling body accommodating spaces (3) and locking assemblies (40) provided, the firmer and more stable the locking is.

[0027] Preferably, the number of the rolling element accommodating spaces (3) and the locking assemblies (40) is set to 3-15. In a small torque application scenario, the rolling element accommodating spaces (3) and the locking assemblies (40) can be set to one group or two groups; when the load is large torque, the rolling element accommodating spaces and the locking assemblies are set to three groups, four groups, five groups, six groups or more.

[0028] Preferably, it also includes an axial positioning member, which is inserted through the inner ring (1) and the drive assembly (60) and is fastened on one side of the drive assembly (60) to axially position the mechanism angle adjustment device to prevent the outer ring and the inner ring from moving axially. At the same time, another function of the axial positioning member (8) is to fix the inner ring (1) on the side wing of the seat back so that it is fixedly connected to the seat and cannot rotate, thereby allowing the outer ring (2) to rotate circumferentially.

[0029] Preferably, the driving assembly (60) comprises a driving disc (6) which is arranged on a side of the retaining frame (4) away from the inner ring (1);

[0030] A pin shaft (44) is provided on the side of the retaining frame (4) adjacent to the driving disk (6); correspondingly, a guide groove (61) for accommodating the pin shaft (44) is provided on the disk surface of the driving disk (6); the guide groove (61) is arranged at an angle with the radial direction;

[0031] An elastic reset member (7) is used for resetting the driving disk (6) and is arranged on a side of the driving disk (6) away from the retaining frame (4). One end of the elastic reset member (7) is connected to the axial positioning member (8) and the other end is connected to the driving disk (6).

[0032] When the driving disk rotates, the pin shaft of the retaining frame slides in the guide groove of the driving disk, thereby approaching or moving away from the axis center in the radial direction; when the driving disk stops rotating, it is driven to reset by the elastic reset member.

[0033] Preferably, the guide groove (61) can be configured as an oblique groove or an arc-shaped groove.

[0034] A clutch comprising a mechanism angle adjustment device as described in any one of the above items. The inner ring (1) is connected to an input shaft, and the outer ring (2) is connected to an output shaft. When the input torque of the input shaft is greater than a set torque value, the mechanism angle adjustment device can be easily and quickly unlocked, so that the input shaft and the output shaft are quickly disconnected, thereby protecting the equipment at the lower end of the output shaft.

[0035] A seat comprising the mechanical angle adjustment device as described in any one of the above items.

[0036] Preferably, the seat comprises a seat back wing (100), the inner ring (1) being fixedly connected to the seat back wing (100); a seat armrest (101), the outer ring (2) being fixedly connected to the seat armrest (101); and an unlocking module connected to the drive assembly (60). After unlocking, the seat armrest can be suspended at any position, and is firmly locked without loosening; the problem that the existing armrest can only be adjusted in a limited number of gears is solved, and the existing ratchet or gear meshing locking is replaced, and the noise is reduced by locking through the cooperation of the rolling body and the wedge-shaped area, and the sensitivity is high, and it is more labor-saving when unlocking.

[0037] Preferably, the seat comprises a cushion side plate, the outer ring (2) being fixedly connected to the cushion side plate; a seat back side wing (100), the inner ring (1) being fixedly connected to the seat back side wing (100); and an unlocking module connected to the driving assembly (60). The angle adjustment device of the mechanism can be used to adjust the angle of the seat back. During normal use, the seat back is locked at a fixed angle. After the unlocking module is unlocked, the seat back can be adjusted to any angle. After the unlocking module is reset, the seat back can be locked again.

[0038] Preferably, the seat comprises a seat body (700) and a fastening member (800); the inner ring (1) is fixedly connected to the seat body (700), and the outer ring (2) is fixedly connected to the fastening member (800); and an unlocking module is also included, which is connected to the driving assembly (60). After being unlocked, the seat body can rotate 360 ​​degrees around the fastening member to meet more customer needs.

[0039] Preferably, the fastening member can be arranged on a slide rail fixed to the car. With such a structure, the car seat can not only rotate freely but also slide in the car.

[0040] Preferably, the unlocking module comprises a sliding stopper (102) fixed to the seat and a button body (108), wherein the button body (108) is provided with a stopper receiving groove (107), the button body (108) is slidably connected to the sliding stopper (102) through the stopper receiving groove (107), and the sliding stopper (102) is connected to the driving assembly (60) through a cable (103); and return springs are provided at two ends of the stopper receiving groove (107) along the sliding direction. With such a structure, when the button body (108) slides along the sliding stopper (102), it can slide along the two end directions of the sliding stopper (102), and both can drive the rotation of the driving assembly, thereby achieving unlocking.

[0041] Specifically, the unlocking module can also be configured as a manipulation handle or a knob, connected to the driving assembly to drive the driving assembly to rotate, which is not limited here.

[0042] A car comprising any one of the above seats.

[0043] Compared with the prior art, the present invention has the following beneficial effects:

[0044] First, in the mechanism angle adjustment device of the present invention, the locking between the outer ring and the inner ring is achieved by rolling bodies and retaining frames, which replaces the traditional ratchet, pawl or gear meshing locking method. The traditional locking method, due to the limitation of the meshing locking principle, the size of the mechanism angle adjustment device itself is larger; by adopting the wedge locking principle of the rolling body, one group, two groups, three groups or four groups of locking components can be used to achieve locking of the circumferential movement of the outer ring and the inner ring, so the size of the mechanism angle adjustment device can be made smaller, more beautiful, easier to control, and save space.

[0045] Second, the mechanism angle adjustment device of the present invention realizes locking through the wedging action of the rolling body in the wedge-shaped space, and one of the outer ring or the inner ring is fixed so that the outer ring and the inner ring cannot rotate relative to each other; the wedge-shaped areas arranged relatively to each other prevent the outer ring and the inner ring from rotating in any direction, and the locking is firm; after locking, a small displacement of the rolling body away from the limiting end of the wedge-shaped area can realize unlocking, and the sensitivity is very high; compared with the traditional angle adjuster, it does not require much force, and a small movement of the unlocking button can realize unlocking, which is easy to operate and labor-saving; after the armrest is adjusted into place, it can be locked at any angle and hovered at will without being restricted by the gear position.

[0046] Third, in the unlocking module of the present invention, the sliding limiter is fixed on the seat, and springs are provided at both ends of the button body in the sliding direction. The button body can be unlocked from top to bottom or from bottom to top, which is easy to operate by the armrest.

[0047] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 is an exploded schematic diagram of the mechanism angle adjustment device of Example 1 of the present invention;

[0049] Figure 2 This is a schematic diagram of the combined structure of the outer ring, inner ring, and rolling element of Example 1 of the present invention;

[0050] Figure 3 This is a schematic diagram of the combined structure of the outer ring, inner ring, and locking assembly of Example 1 of the present invention;

[0051] Figure 4is a schematic structural diagram of a retainer according to embodiment 1 of the present invention;

[0052] Figure 5 is another exploded schematic diagram of the mechanism angle adjustment device of Example 1 of the present invention;

[0053] Figure 6 This is another schematic diagram of the combined structure of the outer ring, inner ring and locking assembly of Example 1 of the present invention;

[0054] Figure 7 is another exploded schematic diagram of the mechanism angle adjustment device of Example 1 of the present invention;

[0055] Figure 8 is another exploded schematic diagram of the mechanism angle adjustment device of embodiment 1 of the present invention;

[0056] Fig. 9 is a schematic structural diagram of a mechanism angle adjustment device according to Embodiment 1 of the present invention;

[0057] Fig.10 is a schematic structural diagram of a retainer according to Embodiment 2 of the present invention;

[0058] Fig.11 is a schematic structural diagram of another retaining frame in Embodiment 2 of the present invention;

[0059] Fig.12 It is a schematic diagram of the mechanism angle adjustment device and the seat explosion structure of Example 3 of the present invention;

[0060] Fig.13 is a schematic diagram of the seat structure of embodiment 3 of the present invention;

[0061] Fig.14 is a schematic diagram of the seat armrest structure of embodiment 3 of the present invention;

[0062] Fig.15 This is a schematic diagram of the structure of the connection between the button and the mechanism angle adjustment device in Example 3 of the present invention;

[0063] Fig.16 is another schematic diagram of a seat structure of Embodiment 3 of the present invention;

[0064] Fig.17 It is a schematic diagram of the seat structure of embodiment 4 of the present invention.

[0065] Reference numerals: inner ring 1, outer ring 2, rolling element accommodating space 3, cage 4, locking assembly 40, rolling element 5, arc groove 41, limiting end 31, driving assembly 60, linear plane 11, first functional surface 411, second functional surface 412, fixing pin 42, strip groove 12, connecting pin 43, driving plate 6, pin shaft 44, guide groove 61, axial positioning member 8, elastic reset member 7, latch pin 81, center hole 13, latch groove 82; first connecting end 71, reset member retaining pin 62 , hook 72, shaft cap 9, hole 91, first assembly groove 49, second assembly groove 490, seat back side wing 100, seat armrest 101, sliding limiter 102, button body 108, limiter accommodating groove 107, cable 103, first return spring 105, second return spring 106, first engaging pin 63, sleeve 111, second engaging pin 109, claw 104, cable bearing support 110, seat body 700, fastener 800, slide rail 900. DETAILED DESCRIPTION

[0066] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of protection of the present invention. Improvements and adjustments made by those skilled in the art in practical applications according to the present invention still belong to the scope of protection of the present invention.

[0067] Example 1

[0068] This embodiment provides a mechanism angle adjustment device, see Figure 1-9 , comprising: an outer ring 2, and an inner ring 1 coaxially arranged with the outer ring 2, at least one rolling body accommodating space 3 is formed between the outer ring 2 and the inner ring 1; a locking assembly 40, comprising a retainer 4 and at least one group of rolling bodies, used to lock or unlock the relative rotation of the outer ring 2 and the inner ring 1 along the circumferential direction; the group of rolling bodies comprises two rolling bodies 5, the retainer 4 is provided with an assembly groove corresponding to the at least one group of rolling bodies 5, and one retainer 4 is provided on each side of the inner ring 1; one end of the at least one group of rolling bodies 5 is assembled with the assembly groove of one of the retainers 4, and the other end of the at least one group of rolling bodies 5 passes through the inner ring 1 and is assembled with the assembly groove of the other retainer 4;

[0069] The rolling element accommodating space 3 includes two opposite wedge-shaped areas, each of which extends in the circumferential direction and includes a limiting end 31. The size of the limiting end in the radial direction is smaller than the size of the rolling element 5 in a certain area. The radial space size of the wedge-shaped area increases to exceed the radial size of the rolling element 5 in the direction away from the limiting end 31 in the circumferential direction.

[0070] A driving assembly 60, connected to the retaining frame 4, and used to drive the retaining frame 4 to move radially;

[0071] The retaining frame 4 moves radially, driving the group of rolling bodies 5 to enter the limiting end 31 of the wedge-shaped area, thereby locking the inner ring 1 and the outer ring 2 so that they cannot rotate relative to each other; correspondingly, the retaining frame 4 moves radially, driving the group of rolling bodies 5 away from the limiting end 31 of the wedge-shaped area, thereby releasing the lock, and the outer ring 2 and the inner ring 1 can rotate relative to each other.

[0072] In this embodiment, the rolling body 5 is a columnar rolling body with a certain length; the locking assembly 40 includes two retaining frames 4 respectively arranged on both sides of the inner ring 1, and the rolling body 5 is inserted into the rolling body accommodating space 3 and the assembly grooves of the two retaining frames 4. The two retaining frames 4 drive the rolling body 5 to roll from both ends of the columnar rolling body 5, so that the movement of the rolling body 5 is consistent and easy to control, so that the rolling body 5 can be locked and unlocked smoothly.

[0073] Specifically, the outer ring 2 is set to be annular, the inner ring 1 includes at least one linear plane 11, the rolling body accommodating space 3 is formed between the at least one linear plane 11 and the inner circumference of the outer ring 2, and the two ends of the rolling body accommodating space 3 form the wedge-shaped area; the group of rolling bodies 5 deviate from each other and enter the limiting end 31 of the wedge-shaped area, thereby locking the inner ring 1 and the outer ring 2; the group of rolling bodies 5 approach each other and move away from the limiting end 31 of the wedge-shaped area, thereby releasing the lock, and the outer ring 2 and the inner ring 1 can rotate relative to each other. In other alternative embodiments, the linear plane of the inner ring 1 can also be set to an arc edge, and the arc edge of the inner ring 1 and the outer ring 2 form the rolling body accommodating space 3, which is not limited here.

[0074] The assembly groove of the retainer (4) comprises a first functional surface (45) and a second functional surface (46) arranged opposite to each other, one of the rolling elements in the group of rolling elements is assembled in the space between the first functional surface (45) and the second functional surface (46); and comprises a third functional surface (47) and a fourth functional surface (48) arranged opposite to each other, another rolling element in the group of rolling elements is assembled in the space between the third functional surface (47) and the fourth functional surface (48). The first functional surface (45), the second functional surface (46), the third functional surface (47), and the fourth functional surface (48) are all arranged at an angle with the radial direction, and the angle does not include a right angle and a flat angle.

[0075] In this embodiment, the assembly groove of the retaining frame 4 is set as an arc groove 41, see Figure 4The arc groove 41 includes a first functional surface 45 and a fourth functional surface 47 away from the axis, and includes a second functional surface 46 and a third functional surface 48 close to the axis. The four functional surfaces of the arc groove 41 are set to have a certain curvature, so that the component force of the functional surface on the rolling element 5 in the direction perpendicular to the radial direction is larger. The angles of the first functional surface (45), the second functional surface (46), the third functional surface (47), and the fourth functional surface (48) with the radial direction should be set according to actual needs and are not used to limit the protection scope of the present invention.

[0076] In this embodiment, the retainer 4 moves away from the axis, and the second functional surface 46 and the fourth functional surface 48 act on the rolling element 5 respectively, pushing the group of rolling elements 5 to move away from each other in the rolling element accommodating space 3 and enter the limiting end 31 of the wedge-shaped area, thereby locking the outer ring 2 and the inner ring 1. The retainer 4 moves close to the axis, and the first functional surface 45 and the third functional surface 47 act on the rolling element 5 respectively, forcing the group of rolling elements 5 to move close to each other in the rolling element accommodating space 3 and away from the limiting end 31 of the wedge-shaped area, thereby releasing the locking of the outer ring 2 and the inner ring 1.

[0077] Furthermore, one of the retaining frames 4 in the set of locking assemblies 40 is provided with a fixing pin 42 on a side surface close to the inner ring 1, and correspondingly, the other retaining frame 4 is provided with a pin hole 421 that cooperates with the fixing pin 42. The cooperation between the fixing pin 42 and the pin hole 421 enables the two retaining frames to be connected through and maintain the consistency of the movement of the two retaining frames 4.

[0078] Furthermore, the inner ring 1 is provided with a strip groove 12 in the radial direction to cooperate with the fixing pin 42, so as to limit the retaining frame 4 from deflecting when it moves close to or away from the axial direction, and can only move in the radial direction.

[0079] Furthermore, one of the retaining frames 4 in the group of locking assemblies 40 is provided with a connecting pin 43, and correspondingly, the other retaining frame 4 is provided with a connecting hole. The two retaining frames 4 are connected via the connecting pin 43, further ensuring the consistency of movement of the two retaining frames 4.

[0080] Further, the inner ring 1 is evenly provided with a plurality of linear planes 11, and the plurality of linear planes 11 and the inner circumferential surface of the outer ring 2 form a plurality of rolling element accommodating spaces 3, which are evenly provided between the outer ring 2 and the inner ring 1, and the locking assembly 40 is provided in a manner adapted to the rolling element accommodating spaces 3. Considering symmetry and uniform distribution of force, the rolling element accommodating spaces 3 and the locking assembly 40 are evenly distributed along the circumference. In the application scenario of small torque, the rolling element accommodating spaces 3 and the locking assembly 40 can be provided as one group or two groups; when the load is large torque, the rolling element accommodating spaces 3 and the locking assembly 40 are provided as three groups, four groups, five groups, six groups or more. The number of the rolling element accommodating spaces 3 and the locking assembly 40 is not used to limit the protection scope of the present invention, and can be provided according to the actual torque requirements.

[0081] Please continue to see Figure 5-Figure 8 The driving assembly 60 includes a driving disk 6, which is arranged on a side of the retaining frame 4 away from the inner ring 1; a pin 44 is arranged on the side of the retaining frame 4 adjacent to the driving disk 6, and correspondingly, a guide groove 61 for accommodating the pin 44 is arranged on the disk surface of the driving disk 6, and the guide groove 61 is arranged at an angle to the radial direction. The inclination angle of the guide groove 61 is set according to actual needs and is not used to limit the protection scope of the present invention. When the driving disk 6 is rotated, the pin 44 of the retaining frame 4 slides in the guide groove 61.

[0082] In this embodiment, the mechanism angle adjustment device further includes an axial positioning member 8 , which is passed through the inner ring 1 and the driving disk 6 and is fastened to one side of the driving disk 6 .

[0083] In this embodiment, the driving assembly 60 also includes an elastic reset member 7 for resetting the driving disk 6, which is arranged on a side of the driving disk 6 away from the retaining frame 4. One end of the elastic reset member 7 is connected to the axial positioning member 8, and the other end is connected to the driving disk 6.

[0084] For details, please refer to Figure 8 , 9The axial positioning member 8 is provided with a protruding bayonet 81 on its circumference, and the inner ring 1 is provided with a center hole 13 adapted to the axial positioning member 8 and the bayonet 81. The axial positioning member 8 is engaged with the center hole 13 through the bayonet 81, thereby fixing the inner ring 1. The end side of the axial positioning member 8 is provided with a bayonet groove 82 facing the axial direction; the elastic reset member 7 is provided as a coil spring, one end of which is bent toward the axial center to form a first connecting end 71, which is engaged in the bayonet groove 82 of the axial positioning member 8; the side of the driving disc 6 away from the retaining frame 4 is provided with a reset member retaining pin 62, and the other end of the elastic reset member 7 is provided with a hook 72, which is connected to the reset member retaining pin 62. It also includes a shaft cap 9, which is circumferentially provided with a clamping hole 91 adapted to the first connecting end 71 of the elastic reset member 7. The shaft cap 9 is sleeved on the end of the axial positioning member 8. The clamping hole 91 fixes the first connecting end 71 of the elastic reset member 7. The shaft cap 9 is fixed to the axial positioning member 8 by screws, thereby achieving the fixation of the elastic reset member 7 and the axial positioning of the drive disk 6.

[0085] In the mechanism angle adjustment device of this embodiment, the inner ring 1 is fixedly connected to the external device through the axial positioning member 8, and the inner ring 1 is fixed. When the driving disk 6 rotates, the pin shaft 44 of the retaining frame 4 slides toward the axis along the guide groove 61, and the group of rolling elements 5 approach each other under the pressure of the first functional surface 411 of the retaining frame 4, and move away from the limiting end 31 of the wedge-shaped area of ​​the rolling element accommodating space 3, unlocking the outer ring 2, and the outer ring 2 can rotate. When the elastic reset member 7 drives the driving disk 6 to reset, the pin shaft 44 of the retaining frame 4 moves away from the axis along the guide groove 61, and the group of rolling elements 5 move away from each other under the push of the second functional surface 412 of the retaining frame 4, and enter the limiting end 31 of the wedge-shaped area of ​​the rolling element accommodating space 3, and the wedge-shaped area and the retaining frame 4 lock the rolling elements 5, and the outer ring 2 is locked by the rolling elements 5 and cannot rotate.

[0086] Example 2

[0087] This embodiment provides another mechanism angle adjustment device. The structure of the mechanism angle adjustment device of this embodiment is similar to that of embodiment 1, and the difference lies in the structure of the retaining frame 4.

[0088] In this embodiment, the assembly groove of the retaining frame 4 includes two independent first assembly grooves 49 and second assembly grooves 490, and two rolling elements in the group of rolling elements are respectively assembled in the first assembly groove 49 and the second assembly groove 490; the first assembly groove 49 includes a first functional surface 45 away from the axis and a second functional surface 46 close to the axis, and the second assembly groove 490 includes a third functional surface 47 away from the axis and a fourth functional surface 48 close to the axis.

[0089] When the wedge-shaped areas at both ends of the rolling element accommodating space 3 are symmetrically arranged along the circumferential direction, the first assembly groove 49 and the second assembly groove 490 are symmetrically arranged along the radial direction.

[0090] See also Fig.10 , shows a retainer 4 of this embodiment, wherein the first functional surface 45 and the second functional surface 46 are arranged at an angle to the radial direction, the third functional surface 47 and the fourth functional surface 48 are arranged at an angle to the radial direction, the first assembly groove 49 and the second assembly groove 490 are arranged in a radial direction close to the axis, and the distance between the first assembly groove 49 and the second assembly groove 490 gradually increases. At this time, the retainer 4 moves away from the axis, and the second functional surface 46 and the fourth functional surface 48 respectively push the group of rolling elements 5 to move away from each other in the rolling element accommodating space 3 and enter the wedge-shaped area, locking the outer ring 2 and the inner ring 1. The retainer 4 moves close to the axis, and the first functional surface 45 and the third functional surface 47 respectively press the group of rolling elements 5 to move close to each other in the rolling element accommodating space 3 and away from the wedge-shaped area, releasing the locking of the outer ring 2 and the inner ring 1.

[0091] In another alternative embodiment, see Fig.11 , the first functional surface 45 and the second functional surface 46 are set at an angle to the radial direction, the third functional surface 47 and the fourth functional surface 48 are set at an angle to the radial direction, the first assembly groove 49 and the second assembly groove 490 are in the direction of radial approach to the axis, and the distance between the first assembly groove 49 and the second assembly groove 490 gradually decreases. At this time, the retainer 4 moves away from the axis, and the second functional surface 46 and the fourth functional surface 48 respectively push the group of rolling elements 5 to approach each other in the rolling element accommodating space 3 and away from the wedge-shaped area, thereby releasing the locking of the outer ring 2 and the inner ring 1; the retainer 4 moves close to the axis, and the first functional surface 45 and the third functional surface 47 respectively press the group of rolling elements 5 to deviate from each other in the rolling element accommodating space 3 and enter the wedge-shaped area, thereby locking the outer ring 2 and the inner ring 1.

[0092] Example 3

[0093] This embodiment provides an application of the mechanism angle adjustment device described in Embodiment 1 on a car seat.

[0094] In this embodiment, the automobile seat includes a seat back side wing 100 and a seat armrest 101, see Figure 12-16 The outer ring 2 is fixed to the seat armrest 101, and the inner ring 1 is fixed to the seat back wing 100 through the axial positioning member 8. The fixing can be welding.

[0095] When unlocked, the seat armrest 101 can rotate freely around the axial positioning member 8; when locked, the seat armrest 101 is fixed. The mechanism angle adjustment device of this embodiment can fix the seat armrest 101 at any angle, and fix it firmly, and the seat armrest 101 can hover at any angle without loosening.

[0096] Specifically, the seat armrest 101 further includes an unlocking module, which includes a button body 108 and a sliding stopper 102 fixed to the seat armrest 101, the button body 108 is provided with a stopper accommodating groove 107, the button is slidably connected to the sliding stopper 102 through the stopper accommodating groove 107, and the button body 108 is connected to the driving disk 6 through a cable 103. A first return spring 105 and a second return spring 106 are provided at two ends along the sliding direction in the stopper accommodating groove 107.

[0097] Furthermore, the outer side surface of the driving disk 6 is provided with a first engaging pin 63, and one end of the cable 103 is provided with a sleeve 111 on the outer side surface of the button body 108, and the cable 103 is connected to the driving disk 6 through the sleeve 111. The other end of the cable 103 is provided with a second engaging pin 109, and the outer side surface of the button is provided with two opposite protruding claws 104, and the two protruding claws 104 fix the second engaging pin 109 to the button body 108.

[0098] Furthermore, the armrest 101 is further provided with a cable bearing support 110, which is provided between the button body 108 and the mechanism angle adjustment device, so that the cable 103 generates a movement perpendicular to the sliding direction of the button 103. When the button body 108 of this embodiment is pressed, the button body 108 pulls the cable 103 to move in a direction close to the button body 108, drives the driving disk 6 to rotate, and the elastic reset member 7 generates elastic deformation.

[0099] The drive plate 6 drives the retaining frame 4 to move radially, and the retaining frame 4 drives a group of rolling bodies 5 of the locking assembly 40 away from the wedge-shaped area. The outer ring 2 can rotate relative to the inner ring 1, and the seat armrest 101 can be raised or lowered to any angle.

[0100] When the button body 108 is released, the sliding stopper 102 causes the first reset spring 105 and the second reset spring 106 to recover their deformation, and when the elastic reset member 7 drives the drive plate 6 to reset, the cable 103 moves toward the direction of the mechanism angle adjustment device. The drive plate 6 drives the retaining frame 4 to reset, and a group of rolling bodies 5 of the locking assembly 40 enter the wedge-shaped area. Under the action of the rolling bodies 5, the outer ring 2 is locked by the wedge-shaped surface of the wedge-shaped area, thereby locking the seat armrest 101, so that the seat armrest 101 is locked at any angle.

[0101] Furthermore, a side cover plate is provided between the seat back side wing 100 and the seat armrest 101 to reduce the friction between the seat armrest 101 and the seat back side wing 100 and to shield the axial positioning member 8 to make the seat and the seat armrest more beautiful as a whole.

[0102] The button body 108 of this embodiment can be pressed downward to unlock, and the button body 108 can also be pulled upward to unlock. Compared with traditional buttons, the unlocking methods are more diverse.

[0103] The seat of this embodiment is unlocked by operating a button, and can also be unlocked by existing methods such as a joystick or a knob, which is not limited here.

[0104] In another embodiment, the angle adjustment device of the mechanism described in Example 1 can also be applied to the armrests of a car seat. Specifically, the outer ring 2 is fixedly connected to the seat side panel, the inner ring 1 is fixedly connected to the side wing of the car seat backrest through the axial positioning member 8, and the drive disk 7 is connected to the operating handle. The drive disk is driven by the operating handle to achieve unlocking or locking.

[0105] Example 4

[0106] This embodiment provides another application scenario of the mechanism angle adjustment device described in Embodiment 1 in a car seat.

[0107] For details, see Fig.17 The automobile seat comprises a seat body 700, an inner ring 1 of the mechanism angle adjustment device is fixedly connected to the seat body 700 through the axial positioning member 8; a fixing member 800 is fixedly connected to the inside of the automobile, and an outer ring 2 of the mechanism angle adjustment device is fixedly connected to the fixing member 800. The unlocking module is similar to the unlocking module of Example 3, except that the sliding limiter 102 is fixed to the seat body 700, and the fixed positions of the sliding limiter 102 and the button body 108 can be set at a convenient position for operation according to the actual environment around the seat body 700, and no limitation is made here.

[0108] The seat body 700 of the present invention can rotate 360 ​​degrees after the unlocking module is unlocked to meet different customer needs.

[0109] Furthermore, a slide rail 900 is provided in the automobile, the fixing member 800 is slidably connected to the automobile via the slide rail 900 , and the seat body 700 can slide along the slide rail 900 .

[0110] Embodiments 3 and 4 only take automobile seats as an example to illustrate the application of the mechanism angle adjustment device of Embodiments 1 and 2 on seats. It should be noted that the mechanism angle adjustment device of Embodiments 1 and 2 is also applicable to the angle adjustment of seats in the field of life and seat backs, armrests or seat bodies in trains, high-speed trains, airplanes, etc., and will not be described in detail here.

[0111] Example 5

[0112] This embodiment provides an application of the mechanism angle adjustment device described in Example 1 in an axial connection. The mechanism angle adjustment device of the present invention can simultaneously achieve clockwise and counterclockwise locking. The inner ring 1 is connected to the input shaft, the outer ring 2 is connected to the output shaft, the group of rolling elements is driven by a drive assembly, and the drive assembly is connected to an external unlocking module.

[0113] When the input torque of the input shaft is greater than the set torque value, the mechanism angle adjustment device of Example 1 can be easily and quickly unlocked, so that the input shaft and the output shaft are quickly disconnected, thereby protecting the equipment at the lower end of the output shaft.

[0114] The above disclosure is only the preferred embodiment of the present invention. The preferred embodiment does not describe all the details in detail, nor does it limit the specific implementation method described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that technicians in the relevant field can make good use of the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A mechanism angle adjustment device, characterized in that: include: An outer ring (2), and an inner ring (1) coaxially arranged with the outer ring (2), wherein at least one rolling element accommodating space (3) is formed between the outer ring (2) and the inner ring (1); A locking assembly (40) comprises a retaining frame (4) and at least one group of rolling elements (5), and is used to lock or unlock the relative rotation of the outer ring (2) and the inner ring (1) in the circumferential direction; the group of rolling elements comprises two rolling elements (5), the retaining frame (4) is provided with a mounting groove corresponding to the at least one group of rolling elements (5), and one retaining frame (4) is provided on each side of the inner ring (1); one end of the at least one group of rolling elements (5) is assembled with the mounting groove of one of the retaining frames (4), and the other end of the at least one group of rolling elements (5) passes through the rolling element accommodating space (3) and is assembled with the mounting groove of the other retaining frame (4); The at least one rolling element accommodating space (3) comprises two opposite wedge-shaped areas, each of the wedge-shaped areas extends in the circumferential direction, each of the wedge-shaped areas comprises a limiting end (31), the size of the limiting end (31) in the radial direction is smaller than the size of the rolling element (5) in a certain area, and the radial space size of the at least one rolling element accommodating space (3) increases to exceed the radial size of the rolling element (5) in the direction away from the limiting end (31) in the circumferential direction; A driving assembly (60) connected to the retaining frame (4) and used to drive the retaining frame (4) to move radially; Wherein, when the retaining frame (4) moves in the radial direction and drives the at least one group of rolling elements (5) to enter the limiting ends (31) of the at least two opposite wedge-shaped areas respectively, the inner ring (1) and the outer ring (2) are locked and cannot rotate relative to each other; When the retaining frame (4) moves in the radial direction and drives the at least one group of rolling elements (5) to move away from the limiting ends (31) of the at least two opposite wedge-shaped areas, the outer ring (2) and the inner ring (1) are unlocked and can rotate relative to each other; The outer ring (2) is set to be annular, the outer circumference of the inner ring (1) includes at least one linear plane or at least one arcuate surface, each linear plane or arcuate surface and the inner circumference of the outer ring (2) form the rolling body accommodating space (3), and each rolling body accommodating space (3) forms two opposite wedge-shaped areas at two ends along the circumferential direction; the locking assembly (40) includes a group of rolling bodies (5) respectively arranged at two ends of the rolling body accommodating space (3); It also includes an axial positioning member (8) which is inserted through the inner ring (1) and the driving assembly (60) and is fastened on one side of the driving assembly (60).

2. The mechanism angle adjustment device according to claim 1, characterized in that: The assembly groove of the retaining frame (4) comprises a first functional surface (45) and a second functional surface (46) which are arranged opposite to each other, and one of the rolling elements in the group of rolling elements is assembled in the space between the first functional surface (45) and the second functional surface (46); and comprising a third functional surface (47) and a fourth functional surface (48) arranged opposite to each other, wherein another rolling body in the group of rolling bodies is assembled in a space between the third functional surface (47) and the fourth functional surface (48); The first functional surface (45), the second functional surface (46), the third functional surface (47), and the fourth functional surface (48) are all arranged at an angle with the radial direction, and the angle does not include a right angle and a flat angle.

3. The mechanism angle adjustment device according to claim 2, characterized in that: The assembly groove of the retaining frame (4) comprises an arc-shaped groove (41), and the arc-shaped groove (41) comprises the first functional surface (45), the second functional surface (46), the third functional surface (47) and the fourth functional surface (48).

4. The mechanism angle adjustment device according to claim 2, characterized in that: The assembly groove of the retaining frame (4) comprises two independent first assembly grooves (49) and second assembly grooves (490), and two rolling bodies in the group of rolling bodies are respectively assembled in the first assembly groove (49) and the second assembly groove (490); The first assembly groove (49) includes a first functional surface (45) away from the axis and a second functional surface (46) close to the axis, and the second assembly groove (490) includes a third functional surface (47) away from the axis and a fourth functional surface (48) close to the axis.

5. The mechanism angle adjustment device according to claim 1, characterized in that: One of the retaining frames (4) in the group of locking assemblies (40) is provided with a fixing pin (42) on a side surface close to the inner ring (1); correspondingly, the other retaining frame (4) is provided with a pin hole (421) that cooperates with the fixing pin (42); the inner ring (1) is provided with a strip groove (12) in the radial direction; the fixing pin (42) passes through the strip groove (12) and is connected with the pin hole (421) of the other retaining frame (4).

6. The mechanism angle adjustment device according to claim 5, characterized in that: The two retaining frames (4) in the set of locking components (40) are also connected via a connecting pin (43).

7. The mechanism angle adjustment device according to claim 2, characterized in that: The number of the rolling body accommodating spaces (3) and the locking assemblies (40) is set to 2-15, and they are evenly arranged between the outer ring (2) and the inner ring (1); the locking assemblies (40) are arranged in a manner compatible with the rolling body accommodating spaces (3).

8. The mechanism angle adjustment device according to claim 1, characterized in that: The driving assembly (60) comprises a driving disk (6) which is arranged on a side of the retaining frame (4) away from the inner ring (1); A pin shaft (44) is provided on the side of the retaining frame (4) adjacent to the driving disk (6); correspondingly, a guide groove (61) for accommodating the pin shaft (44) is provided on the disk surface of the driving disk (6); the guide groove (61) is arranged at an angle with the radial direction; An elastic reset member (7) is used for resetting the driving disk (6) and is arranged on a side of the driving disk (6) away from the retaining frame (4). One end of the elastic reset member (7) is connected to the axial positioning member (8) and the other end is connected to the driving disk (6).

9. A clutch comprising the mechanism angle adjustment device as claimed in any one of claims 1 to 8.

10. A seat comprising the mechanical angle adjustment device according to any one of claims 1 to 8.

11. The seat according to claim 10, characterized in that include, A seat back wing (100), the inner ring (1) being fixedly connected to the seat back wing (100); A seat armrest (101), wherein the outer ring (2) is fixedly connected to the seat armrest (101); An unlocking module is connected to the driving component (60).

12. The seat according to claim 10, characterized in that include, A seat cushion side plate, the outer ring (2) being fixedly connected to the seat cushion side plate; A seat back wing (100), the inner ring (1) being fixedly connected to the seat back wing (100); An unlocking module is connected to the driving component (60).

13. The seat according to claim 10, characterized in that It comprises a seat body (700) and a fixing part (800); the inner ring (1) is fixedly connected to the seat body (700), and the outer ring (2) is fixedly connected to the fixing part (800); and it also comprises an unlocking module connected to the driving component (60).

14. The seat according to claim 13, characterized in that The fixing member (800) is slidably connected to a slide rail (900), and the slide rail (900) is fixedly connected to an external device.

15. The seat according to any one of claims 11 to 14, characterized in that: The unlocking module comprises a sliding stopper (102) fixed to the seat and a button (108) body; The button (108) body is provided with a limit member accommodating groove (107), and the button (108) body is slidably connected to the sliding limit member (102) via the limit member accommodating groove (107), and the sliding limit member (102) is connected to the driving assembly (60) via a cable (103); and return springs are provided at both ends of the limit member accommodating groove (107) along the sliding direction.

16. A vehicle comprising a seat according to any one of claims 10 to 15.

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