Multi-directional adjustment support assembly for a seat

Abstract

The utility model discloses a kind of multi-directional adjusting support subassemblies of seat, it includes fixed seat, movable seat, lifting seat, connecting seat, supporting piece;Movable seat includes rotating end, free end, rotating end is hinged in fixed seat, and first locking mechanism is arranged between free end and fixed seat;Lifting seat is slidably installed on movable seat, and second locking mechanism is arranged between lifting seat and movable seat;Connecting seat is fixed on supporting piece, connecting seat and lifting seat are slidingly matched to make connecting seat can move up and down relative to lifting seat, and elastic element for exerting upward elastic stress to connecting seat is arranged between connecting seat and lifting seat, and the side of supporting piece away from lifting seat forms support surface.The utility model can be on the basis of up and down self-adapting, by up and down adjustment and front and back adjustment, change the support surface height and angle of supporting piece, make the support surface of supporting piece can better adhere to the body part of user, improve the comfort of seat.

Description

Technical Field

[0001] This utility model relates to the field of seating technology, specifically to a multi-directional adjustable support component for a seat. Background Technology

[0002] Existing office chairs and gaming chairs are usually equipped with support components such as headrests and lumbar supports to provide support for the user's head and waist, thereby relieving fatigue caused by the head and waist being unsupported. In order to make the support components suitable for users of different body types, the support components installed on the chair usually have an adjustable function. However, existing support components can generally only be adjusted up and down to accommodate users with different sitting heights. As a result, the support surface of the support component cannot fit well with the user's head and waist, resulting in poor comfort. Utility Model Content

[0003] The purpose of this utility model is to provide a multi-directional adjustable support component for a seat, which can be adjusted up and down, forward and backward, and can adapt to the user's supported body parts, so that the support surface of the support component can better fit the user's body parts.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] The multi-directional adjustable support assembly for the seat includes a fixed seat, a movable seat, a height-adjustable seat, a connecting seat, and support components;

[0006] The movable seat includes a rotating end and a free end opposite to the rotating end. The rotating end is pivotally connected to the fixed seat so that the movable seat can swing back and forth relative to the fixed seat. A first locking mechanism is provided between the free end and the fixed seat. The first locking mechanism is used to limit the degree of freedom of the free end to swing backward relative to the fixed seat, and to allow the free end to swing backward relative to the fixed seat when it is operated.

[0007] The lifting seat is slidably mounted on the movable seat so that the lifting seat can move up and down relative to the movable seat. A second locking mechanism is provided between the lifting seat and the movable seat. The second locking mechanism is used to limit the degree of freedom of the lifting seat to move downward relative to the movable seat, and to allow the lifting seat to move downward relative to the movable seat when it is operated.

[0008] The connecting seat is fixed to the support member, and the connecting seat and the lifting seat slide together so that the connecting seat can move up and down relative to the lifting seat. An elastic element is provided between the connecting seat and the lifting seat to apply upward elastic stress to the connecting seat. The side of the support member away from the lifting seat forms a support surface.

[0009] Preferably, the fixed seat includes two side walls and a bottom wall connected between the bottoms of the two side walls. The two side walls and the bottom wall form a front opening to accommodate a receiving groove for the movable seat. The rotating end is located at the top of the movable seat, and the free end is located at the bottom of the movable seat. The rotating end is pivotally connected to the fixed seat via a pivot connected between the two side walls. The first locking mechanism is installed on the bottom wall of the fixed seat.

[0010] Preferably, the free end of the movable seat is provided with multiple locking grooves, which are arranged along an arc-shaped trajectory, the center of which falls on the central axis of the pivot; the first locking mechanism includes a first locking member and a first elastic member, the first locking member is configured to swing left and right relative to the fixed seat, and the first elastic member is used to apply an elastic stress in the left and right direction to the first locking member so that the first locking member can be locked in one of the locking grooves.

[0011] Preferably, the bottom surface of the movable seat is provided with a guide groove, the guide groove includes a first side and a second side opposite to the first side, a plurality of locking grooves are arranged on the first side of the guide groove, the locking groove includes a baffle extending from the first side away from the second side and an inclined guide wall extending from the end of the baffle away from the second side to the first side, and a locking pin is provided on the first locking member. When the locking pin is placed in the locking groove and the movable seat is subjected to a rearward force, the locking pin abuts against the baffle to limit the movable seat from swinging backward relative to the fixed seat. When the locking pin is placed in the locking groove and the movable seat is subjected to a forward force, the inclined guide wall is used to push the locking pin out of the locking groove so that the locking pin is placed in the guide groove.

[0012] Preferably, the first locking member is configured to move relative to the fixed seat in the front-rear direction, so that when the first locking member moves to a forward position relative to the fixed seat, it remains relatively fixed to the fixed seat in the left-right direction, and when the first locking member moves to a rearward position relative to the fixed seat, it can swing left and right relative to the fixed seat; the front end face of the guide groove is used to push the first locking member to a rearward position when it swings backward to contact the first locking member, and the rear end face of the guide groove is used to push the first locking member to a forward position when it swings backward to contact the first locking member.

[0013] Preferably, the movable seat includes an end wall, the front side of which forms a mating surface, the mating surface being an arc shape with the middle recessed backward in the vertical direction; the lifting seat abuts against the mating surface so that the lifting seat can slide up and down along the mating surface, and the second locking mechanism is installed inside the movable seat.

[0014] Preferably, the end wall is provided with a vertically extending slide groove, and the lifting seat is provided with a rearward protruding and sliding slider embedded in the slide groove; one side of the slide groove is provided with a plurality of vertically arranged locking slots, and the second locking mechanism includes a second locking member and a second elastic member. The second locking member is configured to swing left and right relative to the slider, and the second elastic member is used to apply an elastic stress in the left and right direction to the second locking member so that the second locking member can be locked in one of the locking slots.

[0015] Preferably, the slide includes a first side and a second side opposite to the first side. The locking groove includes a support wall extending from the first side away from the second side and an inclined top wall extending from one end of the support wall away from the second side to the first side. The second locking member is provided with a lock head that matches the shape of the locking groove. When the lock head is placed in the locking groove and the lifting seat is subjected to a downward force, the support wall abuts against the bottom of the lock head to limit the downward movement of the lifting seat relative to the movable seat. When the lock head is placed in the locking groove and the lifting seat is subjected to an upward force, the inclined top wall is used to push the lock head out of the locking groove so that the second locking member is disengaged from the locking groove.

[0016] Preferably, the second locking member is configured to move relative to the lifting seat in the vertical direction, so that when the second locking member moves to a lower position relative to the lifting seat, it remains relatively fixed to the lifting seat in the horizontal direction, and when the second locking member moves to a higher position relative to the lifting seat, it can swing left and right relative to the lifting seat; the movable seat is provided with an upper actuating part and a lower actuating part, the upper actuating part is used to move the second locking member downward relative to the lifting seat to a lower position when the second locking member moves upward to contact the upper actuating part, and the lower actuating part is used to move the second locking member upward relative to the lifting seat to a higher position when the second locking member moves downward to contact the lower actuating part.

[0017] Preferably, the connecting seat is provided with a vertically extending guide groove, and a baffle is detachably fixed on the front side of the lifting seat. The front side of the lifting seat passes through the guide groove from back to front, and the baffle is placed on the front side of the connecting seat to place the connecting seat between the lifting seat and the baffle. The elastic element is a tension spring, with the upper end of the tension spring connected to the lifting seat and the lower end connected to the connecting seat.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] In this invention, the connecting seat adaptively moves downward relative to the lifting seat, thereby allowing the height of the support member to adapt to the height of the user's body. When the range of adaptive vertical movement of the support member is insufficient, the second locking mechanism can be operated to adjust the lifting seat vertically, thereby changing the overall height of the lifting seat, connecting seat, and support member. By operating the first locking mechanism, the angle of the support member can be adjusted so that the support surface of the support member can provide support to the user's body at different angles. Based on the adaptive vertical movement, this invention can change the height and angle of the support surface of the support member through vertical and horizontal adjustment as well as front and back adjustment, so that the support surface of the support member can better fit the user's body and improve the comfort of the seat. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 for Figure 1 Assembly diagram of the movable seat and the fixed seat;

[0022] Figure 3 for Figure 2 A schematic diagram of the structure of the first locking component;

[0023] Figure 4 for Figure 2 Schematic diagram of the structure of the movable seat;

[0024] Figure 5 This is a schematic diagram of one working state of the present invention;

[0025] Figure 6-9 This is a schematic diagram of an adjustment process according to the present invention;

[0026] Figure 10 for Figure 1 Assembly diagram of the middle lifting seat and the movable seat;

[0027] Figure 11 for Figure 10 A structural diagram of the back of the movable seat;

[0028] Figure 12 for Figure 10 Assembly diagram of the middle lifting seat and the second locking component;

[0029] Figure 13 for Figure 10 Schematic diagram of the middle lifting seat;

[0030] Figure 14 for Figure 10 A schematic diagram of the middle slider;

[0031] Figure 15This is a schematic diagram of another working state of the present invention;

[0032] Figure 16-20 This is a schematic diagram of another adjustment process of this utility model;

[0033] Figure 21 for Figure 1 Assembly diagram of the middle lifting seat and connecting seat.

[0034] Wherein: 10, fixed seat; 101, side wall; 102, bottom wall; 103, storage slot; 11, groove; 111, rear end face; 112, front end face; 113, first notch; 114, second notch; 12, through groove; 20, movable seat; 201, rotating end; 202, free end; 203, bottom surface; 21, guide groove; 211, first side; 212, second side; 214, rear end face; 215, front end face; 22, locking groove; 221, baffle wall; 222, inclined guide wall; 23, end wall; 231, mating surface; 24, sliding groove; 241, first side; 242, second side; 2 5. Recess; 251. Upper actuating part; 252. Lower actuating part; 26. Locking groove; 261. Support wall; 262. Sloping top wall; 30. First locking element; 31. Locking post; 32. Rotating part; 33. Locking end; 40. Spring; 50. Lifting seat; 501. Slider; 502. Cover plate; 503. Baffle; 504. Mounting groove; 51. Guide groove; 511. First section; 512. Second section; 513. Bending part; 60. Second locking element; 61. Lock head; 62. Lever; 63. Sliding post; 70. Spring; 80. Connecting seat; 81. Guide groove; 82. Tension spring; 90. Headrest. Detailed Implementation

[0035] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. Unless otherwise specified, the materials and equipment used in this embodiment are all commercially available. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0036] In the description of this application, it should be understood that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In the description of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0037] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected," "linked," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a connection through an intermediary, or a connection within two elements or an interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0038] like Figure 1 As shown, this utility model discloses a multi-directional adjustable support assembly for a seat, particularly a headrest assembly for supporting a user's head. It includes a fixed base 10, a movable base 20, a lifting base 50, a connecting base 80, and a headrest 90. The fixed base 10 can be connected to the backrest support of the seat, allowing the headrest assembly to be installed at an appropriate position on the seat. The movable base 20 is rotatably mounted on the fixed base 10. The movable base 20 includes a rotating end 201 at its upper end and a free end 202 at its lower end opposite to the rotating end 201. The rotating end 201 is pivotally connected to the fixed base 10, allowing the movable base 20 to swing back and forth relative to the fixed base 10. A first locking mechanism is provided between the free end 202 and the fixed base 10. The first locking mechanism is operably disposed between the fixed base 10 and the movable base 20, and is used to limit the free end 202. 02 The degree of freedom to swing backward relative to the fixed base 10, and the ability of the free end 202 to swing backward relative to the fixed base 10 when operated. When the headrest assembly is in use, the first locking mechanism prevents the free end 202 from swinging backward relative to the fixed base 10. When the movable base 20 is subjected to a backward force from the user's head, the first locking mechanism supports the movable base 20 and transmits the backward pressure on the movable base 20 to the fixed base 10. When the headrest assembly needs to be adjusted, the first locking mechanism is operated to unlock the free end 202 and the fixed base 10, allowing the movable base 20 to swing backward to adjust its backward position. After the movable base 20 is adjusted to the appropriate position, the free end 202 is in another position and the first locking mechanism prevents the free end 202 from swinging backward relative to the fixed base 10 at that other position.

[0039] See Figure 2 , 3 4, 5. The lifting seat 50 is slidably mounted on the movable seat 20. The lifting seat 50 can move up and down relative to the movable seat 20. A second locking mechanism is provided between the lifting seat 50 and the movable seat 20. The second locking mechanism is operablely set between the lifting seat 50 and the movable seat 20. The second locking mechanism is used to limit the degree of freedom of the lifting seat 50 to move downward relative to the movable seat 20, and to release the restriction on the lifting seat 50 when operated, so that the lifting seat 50 can move downward relative to the movable seat 20. When the headrest assembly is in use, the second locking mechanism prevents the lifting seat 50 from moving downward relative to the movable seat 20. When the lifting seat 50 is subjected to a downward force from the user's head, the second locking mechanism supports the lifting seat 50 and transmits the downward pressure on the lifting seat 50 to the movable seat 20. When the headrest assembly needs to be adjusted, the second locking mechanism is operated to unlock the lifting seat 50 and the movable seat 20, and the position of the lifting seat 50 is adjusted downward so that the lifting seat 50 is in another position and the second locking mechanism prevents the lifting seat 50 from moving downward relative to the movable seat 20 in that other position.

[0040] The connecting seat 80 is fixed to the headrest 90. Specifically, the connecting seat 80 can be integrally formed with the outer frame of the headrest 90 or fixedly connected together. The connecting seat 80 is slidably engaged with the lifting seat 50, so that the connecting seat 80 can move up and down relative to the lifting seat 50. An elastic element is provided between the connecting seat 80 and the lifting seat 50. The elastic element is used to apply an upward elastic stress to the connecting seat 80. The upward elastic stress of the elastic element makes the connecting seat 80 always maintain an upward tendency relative to the lifting seat 50. The side of the headrest 90 away from the lifting seat 50 (i.e., the front side of the headrest 90) forms a support surface for supporting the human head. The support surface contacts the user's head to provide support for the user's head, and at the same time bears the backward and downward forces from the user's head.

[0041] In use, this invention provides support to the user's head through the support surface of the headrest 90. The user's head presses downwards against the headrest 90, causing the connecting seat 80 to adaptively move downwards relative to the lifting seat 50. This allows the height of the headrest 90 to adapt to the user's head height. When the adaptive vertical movement of the headrest 90 is insufficient, the second locking mechanism can be operated to adjust the lifting seat 50 vertically, thereby changing the overall height of the lifting seat 50, connecting seat 80, and headrest 90. By operating the first locking mechanism, the angle of the headrest 90 can be adjusted so that the support surface of the headrest 90 can support the user's head at different angles. In summary, this invention, based on the adaptive vertical movement of the user's head, can change the height and angle of the support surface of the headrest 90 through vertical and horizontal adjustments, allowing the support surface of the headrest 90 to better fit the user's head and improving the comfort of the headrest assembly.

[0042] The fixed base 10 includes two side walls 101 and a bottom wall 102. The two side walls 101 are arranged opposite to each other, and the bottom wall 102 is connected to the bottom of the two side walls 101. The two side walls 101 and the bottom wall 102 together form a front-opening storage groove 103. The width and height of the storage groove 103 are set to just accommodate the movable base 20, so that the movable base 20 can swing back and forth relative to the fixed base 10 in the storage groove 103. The rotating end 201 of the movable base 20 is pivotally connected to the fixed base 10 through a pivot connected to the bracket of the two side walls 101. The pivot can be a pair of locking screws. After the movable base 20 is placed in the storage groove 103, the locking screws are inserted into the two sides of the movable base 20 through the pre-set holes on the two side walls 101 respectively. The two ends of the locking screws are screwed together to connect the movable base 20 to the fixed base 10. The first locking mechanism is installed on the bottom wall 102 of the fixed base 10. The storage slot 103 accommodates the movable seat 20, reducing the space occupied by the movable seat 20 and the fixed seat 10 in the front-to-back direction, making the headrest assembly more compact and facilitating its placement on the seat.

[0043] Multiple locking grooves 22 are provided on the bottom surface 203 of the movable seat 20. That is, these multiple locking grooves 22 are located at the free end 202 of the movable seat 20, and are arranged along an arc-shaped trajectory. Specifically, the bottom surface 203 of the movable seat 20 is an arc-shaped surface. After the multiple locking grooves 22 are formed on the bottom surface 203, they are arranged along an arc-shaped trajectory, with the center of the arc falling on the central axis of the pivot. Thus, when the movable seat 20 swings back and forth relative to the fixed seat 10, the position between the bottom surface 203 of the movable seat 20 and the bottom wall 102 of the fixed seat 10 remains unchanged, ensuring that the first locking mechanism can cooperate with the multiple locking grooves 22. The first locking mechanism specifically includes a first locking element 30 and a spring 40. The locking member 30 is configured to swing left and right relative to the fixed seat 10. The spring 40 applies an elastic stress to the first locking member 30 in the left and right direction. The elastic stress applied by the spring 40 to the first locking member 30 allows the first locking member 30 to be engaged in one of the locking grooves 22. When the headrest assembly is in use, the elastic stress of the spring 40 causes the first locking member 30 to be engaged in one of the locking grooves 22. The first locking member 30 locks the movable seat 20 and the fixed seat 10, limiting the degree of freedom of the movable seat 20 to swing backward relative to the fixed seat 10. When the first locking mechanism is operated, the spring 40 is compressed, and the first locking member 30 disengages from the locking groove 22, allowing the movable seat 20 to swing backward.For ease of operation, a guide groove 21 extending back and forth is provided on the bottom surface 203 of the movable seat 20. The guide groove 21 includes a first side 211 and a second side 212 opposite to the first side 211. The aforementioned plurality of locking grooves 22 are arranged on the first side 211 of the guide groove 21. The locking groove 22 includes a baffle 221 extending from the first side 211 in a direction away from the second side 212, and an end of the baffle 221 extending obliquely from the end away from the second side 212 to the first side 21. The inclined guide wall 222 of the first locking member 30 forms a toothed structure with the baffle wall 221. A locking pin 31 is provided on the first locking member 30. The locking pin 31 cooperates with the locking groove 22 to make the first locking member 30 locked in the locking groove 22. When the locking pin 31 is placed in the locking groove 22 and the movable seat 20 is subjected to a rearward force, the locking pin 31 abuts against the rear side of the baffle wall 221, thereby limiting the movable seat 20 to swing backward relative to the fixed seat 10. When the locking pin 31 is placed in the locking groove 22, the locking pin 31 abuts against the rear side of the baffle wall 221. When the movable seat 20 is subjected to a forward force in the groove 22, the inclined guide wall 222 achieves reversal. The inclined guide wall 222 pushes the locking pin 31 towards the second side 212 of the guide groove 21, causing the locking pin 31 to disengage from the locking groove 22 and be placed in the guide groove 21. In short, the first locking member 30 is configured to be able to swing left and right relative to the fixed seat 10, and in conjunction with the toothed structure of the locking groove 22, the first locking member 30 and the locking groove 22 cooperate to form a one-way motion mechanism, allowing only the movable seat 20 to move in one direction. The movable seat 20 swings forward, while the degree of freedom of the movable seat 20 to swing backward is limited. After the movable seat 20 swings forward to the appropriate position, the locking pin 31, under the elastic stress of the spring 40, engages in the corresponding locking groove 22, thereby adjusting the movable seat 20 forward. When the movable seat 20 is subjected to a backward external force, the locking pin 31 provides stable support to the stop wall 221 of the locking groove 22 to limit the degree of freedom of the movable seat 20 to move backward, thus enabling the movable seat 20 to withstand the pressure of the user's head moving backward. When it is necessary to adjust the movable seat 20 backward, the first locking member 30 is operated. For example, the first locking member 30 is moved towards the second side 212 near the guide groove 21, causing the locking pin 31 to disengage from the locking groove 22 and be placed in the guide groove 21, thereby releasing the degree of freedom of the movable seat 20 to swing backward. A toggle component connected to the first locking member 30 can be provided on the outside of the fixed base 10, or a toggle component protruding from the outside of the fixed base 10 can be provided on the first locking member 30. When it is necessary to adjust the movable base 20 backward, the toggle component can be operated.

[0044] For ease of operation, this utility model allows the first locking member 30 to be operated in conjunction with the fixed base 10 through its own structure. Specifically, the first locking member 30 is not only configured to swing left and right on the fixed base 10 to achieve the engagement and disengagement of the locking pin 31 and the locking groove 22, but also configured to move relative to the fixed base 10 in the front-back direction. When the first locking member 30 moves to a forward position relative to the fixed base 10, it can remain relatively fixed to the fixed base 10 in the left-right direction. Only when the first locking member 30 moves to a rearward position relative to the fixed base 10 is the first locking member 30 allowed to swing left and right relative to the fixed base 10. The first locking member 30 moves between a forward position and a rearward position, and is pushed by the movable seat 20. Specifically, the rear end face 214 of the guide groove 21 is used to push the first locking member 30 forward to a forward position when the movable seat 20 swings backward to contact the first locking member 30, so that the first locking member 30 and the fixed seat 10 remain relatively fixed in the left and right direction. The front end face 215 of the guide groove 21 is used to push the first locking member 30 backward to a rearward position when the movable seat 20 swings backward to contact the first locking member 30, so that the first locking member 30 has the freedom to swing in the left and right direction relative to the fixed seat 10.

[0045] The first locking member 30 is mounted on the bottom wall 102 of the fixed base 10. Specifically, a groove 11 is provided on the bottom wall 102, which is recessed from its outer surface to its inner surface. A through groove 12 extending to the inner surface of the bottom wall 102 is provided on the top surface of the groove 11. The first locking member 30 is placed in the groove 11, and the locking pin 31 passes through the through groove 12 and is embedded in the guide groove 21. A first notch 113 is provided on the rear end face 111 of the groove 11, and a second notch 114 is provided on the front end face 112 of the groove 11. Correspondingly, a rotating part 32 is formed at the rear end of the first locking member 30, and a locking end 33 is formed at the front end. The rotating part 32 is embedded in the first notch 113, so that the rotating part 32 can rotate in the first notch 113, thereby allowing the first locking member 30 to swing relative to the fixed base 10 in the left and right directions. When the first locking member 30 is in the aforementioned rear position, the locking end 33 of the first locking member 30 is not embedded in the second notch 114. At this time, the first locking member 30 can swing left and right relative to the fixed base 10 in the first notch 113. When the first locking member 30 is in the aforementioned forward position, the locking end 33 of the first locking member 30 is embedded in the second notch 114. At this time, the rotating part 32 and the locking end 33 of the first locking member 30 are respectively limited by the first notch 113 and the second notch 114, so that the first locking member 30 cannot swing left and right relative to the fixed base 10.

[0046] exist Figure 5In the indicated usage state, if the headrest 90 is positioned too far back and needs to be adjusted forward, the movable seat 20 can be pulled forward so that the locking pin 31 of the first locking member 30 engages with the corresponding locking groove 22. (See also...) Figure 5-9 As shown, in Figure 5 In the usage state shown, if the headrest needs to be adjusted backward, the movable seat 20 can be pulled forward, such as... Figure 6 As shown, after the locking pin 31 disengages from the locking groove 22 on the rearmost side, the locking pin 31 will slide into the guide groove 21, and then... Figure 7 As shown, continue pulling the movable seat 20 forward, the locking pin 31 contacts the rear end face 214 of the guide groove 21 and is pushed forward by the rear end face 214, so that the locking end 33 of the first locking member 30 is embedded in the second notch 114. The first locking member 30 will not swing left and right relative to the fixed seat 10. At this time, as shown... Figure 8 As shown, push the movable seat 20 backward until the front end face 215 of the guide groove 21 contacts the locking pin 31. (See figure) Figure 9 As shown, continue to push the movable seat 20 backward, and the front end face 215 will push the locking pin 31 forward a certain distance, so that the locking end 33 of the first locking member 30 will disengage from the second notch 114. Since the first locking member 30 is no longer limited by the second notch 114 at this time, based on the elastic stress of the spring 40, the locking pin 31 on the first locking member 30 will fall into the foremost locking groove 22. Finally, according to the required position, swing the movable seat 20 forward appropriately so that the locking pin 31 falls into the corresponding locking groove 22.

[0047] It should be noted that the spring 40 described above is used to always apply an elastic stress in the left-right direction to the first locking member 30. The spring 40 can be replaced by other elastic members such as a spring sheet or an elastic rubber block.

[0048] See Figure 1 , 2 and combined Figure 10-15The movable seat 20 includes an end wall 23, and a mating surface 231 is formed on the front side of the end wall 23. The mating surface 231 is arc-shaped. Specifically, in the vertical direction, the mating surface 231 is an arc-shaped surface that is concave in the middle. The lifting seat 50 rests against the mating surface 231. After the lifting seat 50 is slidably installed on the movable seat 20, the lifting seat 50 slides up and down along the mating surface 231. The movable seat 20 has a hollow structure, and the second locking mechanism is installed inside the movable seat 20. Because the mating surface 231 is arc-shaped, when the lifting seat 50 slides up and down along the arc-shaped mating surface 231, the angle of the headrest 90 connected to the lifting seat 50 changes slightly, which in turn causes a slight change in the angle of the support surface of the headrest 90 to better adapt to the user's head shape. An upward and downward extending groove 24 is provided on the end wall 23. A slider 501 that protrudes backward and slides in the groove 24 is provided on the lifting seat 50. The lifting seat 50 is slidably mounted on the movable seat 20 by sliding the slider 501 along the groove 24. A cover plate 502 is fixedly connected to the rear end of the slider 501 by bolts. The end wall 23 is limited between the cover plate 502 and the lifting seat 50 to prevent the slider 501 from disengaging from the groove 24 in the front-back direction. Multiple locking slots 26 are provided on one side of the slide groove 24 on the movable seat 20. The multiple locking slots 26 are arranged in the vertical direction. The second locking mechanism includes a second locking member 60 and a spring 70. The second locking member 60 is mounted on the slider 501 and is configured to swing left and right relative to the slider 501. The spring 70 is used to apply an elastic stress in the left and right direction to the second locking member 60, so that the second locking member 60 always swings in the direction of the locking slot 26, thereby locking the second locking member 60 in one of the locking slots 26. The second locking member 60 is operably mounted on the slider 501. When the second locking member 60 is engaged in the locking groove 26, it limits the degree of freedom of the slider 501 to move downward relative to the movable seat 20. At this time, the second locking member 60 provides upward support for the slider 501. The downward pressure from the user's head on the headrest 90 is transmitted to the second locking member 60. When it is necessary to adjust the headrest 90 downward, the second locking member 60 is moved to disengage it from the locking groove 26, so that the slider 501 can move downward along the slide groove 24, thereby adjusting the lifting seat 50 downward.

[0049] The slide groove 24 includes a first side surface 241 and a second side surface 242 opposite to the first side surface 241. A locking groove 26 is disposed on the first side surface 241 of the slide groove 24. Specifically, the locking groove 26 includes a support wall 261 extending from the first side surface 241 in a direction away from the second side surface 242, and an inclined top wall 262 extending from one end of the support wall 261 away from the second side surface 242 back to the first side surface 241. The support wall 261 and the inclined top wall 262 form a toothed structure in the locking groove 26. The locking member 60 is provided with a locking head 61 that matches the shape of the locking groove 26. The locking head 61 is embedded in the locking groove 26, so that the second locking member 60 is engaged with the locking groove 26. When the lifting seat 50 is subjected to a downward force, it is supported by the support wall 261 below the locking head 61, preventing the second locking member 60 from moving downward, and thus preventing the slider 501 from moving downward. This allows the locking groove 26 to stably support the lifting seat 50. Based on the toothed structure of the locking groove 26, the locking head 61 is placed in the locking groove 26. When the lifting seat 50 is moved upward, a reversing mechanism is formed by the inclined structure of the inclined top wall 262. The inclined top wall 262 contacts the lock head 61 and pushes the lock head 61 towards the direction closer to the second side 242. The lock head 61 is pushed out of the locking groove 26, causing the second locking member 60 to disengage from the locking groove 26. In other words, through the inclined top wall 262 and the support wall 261 of the locking groove 26, the locking groove 26 and the lock head 61 of the second locking member 60 cooperate to form a one-way movement mechanism. The lock head 61 is allowed to move upwards, but not downwards. When the headrest 90 needs to be adjusted upwards, simply lift the lifting seat 50 upwards. When the headrest 90 needs to be adjusted downwards, operate the second locking member 60 to disengage the lock head 61 from the locking groove 26, thus releasing the degree of freedom for the lifting seat 50 to move downwards relative to the movable seat 20. The operation of the second locking member 60 can be achieved through a toggle component protruding from the lifting seat 50 on the second locking member 60.

[0050] Of course, to simplify the structure and further facilitate the adjustment of the headrest 90's vertical position, this can be achieved through the structure of the second locking member 60, the slider 501, and the movable seat 20 itself. Specifically, the second locking member 60 is configured to swing relative to the lifting seat 50 in the left and right directions, and also to move relative to the lifting seat 50 in the vertical direction. When the second locking member 60 moves to a lower position relative to the lifting seat 50, it does not have the freedom to swing left and right relative to the lifting seat 50. That is, the second locking member 60 and the lifting seat 50 remain relatively fixed in the left and right directions. When the second locking member 60 moves to a higher position relative to the lifting seat 50, it can swing left and right relative to the lifting seat 50. Then, the elastic stress of the spring 70 pushes the second locking member 60, allowing the locking head 61 of the second locking member 60 to be embedded in one of the slots 26. The movable seat 20 is provided with a toggle structure for moving the second locking member 60 up and down. This structure moves the second locking member 60 to a lower or higher position. Specifically, a recess 25 is formed on the second side 242 of the slide groove 24, in a direction away from the first side 241. The top of the recess 25 forms an upper toggle part 251, and the bottom forms a lower toggle part 252. When the second locking member 60 moves upward with the slider 501 and contacts the upper toggle part 251, the upper toggle part 251 moves the second locking member 60 downward, causing the second locking member 60 to move to a lower position relative to the slider 501. When the second locking member 60 moves downward with the slider 501 and contacts the lower toggle part 252, the lower toggle part 252 moves the second locking member 60 upward, causing the second locking member 60 to move to a higher position relative to the slider 501.

[0051] A mounting groove 504 is formed on the slider 501. The second locking member 60 and the spring 70 are located in the mounting groove 504. The cover plate 502 is used to mount the groove 504 to prevent the second locking member 60 and the spring 70 from detaching from the slider 501. A guide groove 51 is provided on the bottom surface of the mounting groove 504. The guide groove 51 includes a first section 511 extending in the vertical direction and a second section 512 extending in the horizontal direction toward the locking groove 26. Thus, a bend 513 is formed on the guide groove 51 at the junction of the first section 511 and the second section 512. The second locking member 60 is provided with a sliding post 63, a lock head 61 and a lever 62 that are slidably embedded in the guide groove 51. The sliding post 63 on the second locking member 60 can slide along the guide groove 51, thereby configuring the second locking member 60 to be able to move relative to the lifting seat 50 in the vertical direction and to be able to move relative to the lifting seat 50 in the horizontal direction. The lever 62 is embedded in the aforementioned recess 25. When the lever 62 moves upward with the second locking member 60 to contact the upper actuating part 251, the lever 62 is pushed downward by the upper actuating part 251, causing the sliding post 63 of the second locking member 60 to slide from the second section 512 of the guide groove 51 to the first section 511. The locking head 61 of the second locking member 60 moves away from the locking groove 26 and will not approach the locking groove 26 under the elastic stress of the spring 70. When the lever 62 moves downward with the second locking member 60 to contact the lower actuating part 252, the lever 62 is pushed upward by the lower actuating part 252, causing the sliding post 63 of the second locking member 60 to slide from the first section 511 of the guide groove 51 to the bent part 513. Under the elastic stress of the spring 70, the sliding post 63 moves along the second section 512, causing the locking head 61 to be embedded in one of the locking grooves 26.

[0052] Figure 15 This illustration shows one usage state of the present invention. The lock head 61 is engaged in one of the locking slots 26, and the second locking member 60 locks the lifting seat 50 and the movable seat 20, allowing the headrest 90 to provide stable support for the user's head. When it is necessary to adjust the headrest 90 upwards, the lifting seat 50 can be directly lifted upwards using the one-way movement mechanism formed by the multiple locking slots 26 and the second locking member 60. Figure 6 In the position shown, if the headrest needs to be adjusted downwards by 90 degrees, as indicated... Figure 16 As shown, lift the lifting base 50 upwards to disengage the lock head 61 from the topmost locking slot 26, then proceed as follows: Figure 17 As shown, the lifting seat 50 is continued to be lifted upwards, and the lever 62 is pushed downwards by the upper actuating part 251, causing the second locking member 60 to move downwards relative to the lifting seat 50. The sliding column 63 slides from the bent part 513 of the guide groove 51 into the first section 511. At this time, the second locking member 60 is limited by the first section 511 of the guide groove 51; as Figure 18As shown, when the lifting seat 50 is moved downwards, since the second locking member 60 is located away from the locking groove 26, the support wall 261 on the locking groove 26 does not restrict the downward movement freedom of the second locking member 60. The lever 62 moves downwards within the recess 25 along with the second locking member 60 until the lever 62 contacts the lower actuating part 252, as shown. Figure 19 As shown, the lifting seat 50 continues to move downwards, and the lower actuating part 252 moves the lever 62 upwards. The sliding column 63 moves upwards along the first section 511 of the guide groove 51 to the bend 513, as shown. Figure 20 As shown, under the push of the spring 70, the sliding column 63 swings along the second section 512 of the guide groove 51 away from the bend 513, causing the second locking member 60 to swing toward the locking groove 26, and finally the lock head 61 is locked into the bottom locking groove 26; finally, according to the required height, the lifting seat 50 is pulled up until the lock head 61 is locked into the corresponding locking groove 26 to complete the downward adjustment of the headrest 90.

[0053] like Figure 21 As shown, a guide groove 81 extending vertically is provided on the connecting seat 80. A baffle 503 is detachably fixed on the front side of the lifting seat 50. The front side of the lifting seat 50 passes through the guide groove 81 from front to back. The baffle 503 is placed on the front side of the connecting seat 80. The baffle 503 and the lifting seat 50 are located on the front and rear sides of the connecting seat 80, respectively, so that the connecting seat 80 slides relative to the lifting seat 50 along the extension direction of the guide groove 81 between the baffle 503 and the lifting seat 50. The elastic element is a tension spring 82. The upper end of the tension spring 82 is connected to the lifting seat 50 and the lower end is connected to the connecting seat 80. The tension spring 82 applies an upward elastic stress to the connecting seat 80. When the headrest 90 is pressed downward by the user's head, the headrest 90 moves downward and pulls the tension spring 82 downward, so that the deformation of the tension spring 82 gradually increases until the elastic stress of the tension spring 82 and the downward pressure of the user's head tend to be balanced. In this invention, the tension spring 82 can be replaced by other elastic elements such as springs, sheet springs, or elastic rubber blocks.

[0054] It should be noted that the multi-directional adjustable support assembly of the seat of this utility model is not limited to the headrest assembly mentioned above. It can also be a lumbar support assembly for supporting the user's waist. When used as a lumbar support assembly, the headrest 90, which is used as a support member, can be replaced by a lumbar support, and the fixing seat 10 can be installed on the backrest bracket or seat cushion of the seat.

[0055] Finally, it should be noted that the above embodiments are only optional embodiments of this utility model and should not be used to limit the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A multi-directional adjustable support assembly for a seat, characterized in that, Includes a fixed base, a movable base, a lifting base, a connecting base, and supporting components; The movable seat includes a rotating end and a free end opposite to the rotating end. The rotating end is pivotally connected to the fixed seat so that the movable seat can swing back and forth relative to the fixed seat. A first locking mechanism is provided between the free end and the fixed seat. The first locking mechanism is used to limit the degree of freedom of the free end to swing backward relative to the fixed seat, and to allow the free end to swing backward relative to the fixed seat when it is operated. The lifting seat is slidably mounted on the movable seat so that the lifting seat can move up and down relative to the movable seat. A second locking mechanism is provided between the lifting seat and the movable seat. The second locking mechanism is used to limit the degree of freedom of the lifting seat to move downward relative to the movable seat, and to allow the lifting seat to move downward relative to the movable seat when it is operated. The connecting seat is fixed to the support member, and the connecting seat and the lifting seat slide together so that the connecting seat can move up and down relative to the lifting seat. An elastic element is provided between the connecting seat and the lifting seat to apply upward elastic stress to the connecting seat. The side of the support member away from the lifting seat forms a support surface.

2. The multi-directional adjustable support assembly for a seat as described in claim 1, characterized in that, The fixed seat includes two side walls and a bottom wall connected between the bottoms of the two side walls. The two side walls and the bottom wall form a front opening to accommodate a receiving groove for the movable seat. The rotating end is located at the top of the movable seat, and the free end is located at the bottom of the movable seat. The rotating end is pivotally connected to the fixed seat via a pivot connected between the two side walls. The first locking mechanism is installed on the bottom wall of the fixed seat.

3. The multi-directional adjustable support assembly for a seat as described in claim 2, characterized in that, Multiple locking grooves are provided on the free end of the movable seat, and the multiple locking grooves are arranged along an arc-shaped trajectory, the center of which falls on the central axis of the pivot; the first locking mechanism includes a first locking member and a first elastic member. The first locking member is configured to swing left and right relative to the fixed seat, and the first elastic member is used to apply an elastic stress in the left and right direction to the first locking member so that the first locking member can be locked in one of them. In the locking groove.

4. The multi-directional adjustable support assembly for a seat as described in claim 3, characterized in that, The bottom surface of the movable seat is provided with a guide groove, which includes a first side and a second side opposite to the first side. Multiple locking grooves are arranged on the first side of the guide groove. The locking groove includes a baffle extending from the first side away from the second side and an inclined guide wall extending from the end of the baffle away from the second side to the first side. A locking pin is provided on the first locking member. When the locking pin is placed in the locking groove and the movable seat is subjected to a rearward force, the locking pin abuts against the baffle to limit the movable seat from swinging backward relative to the fixed seat. When the locking pin is placed in the locking groove and the movable seat is subjected to a forward force, the inclined guide wall is used to push the locking pin out of the locking groove so that the locking pin is placed in the guide groove.

5. The multi-directional adjustable support assembly for a seat as described in claim 4, characterized in that, The first locking member is configured to move relative to the fixed seat in the front-rear direction, so that when the first locking member moves to a forward position relative to the fixed seat, it remains relatively fixed to the fixed seat in the left-right direction, and when the first locking member moves to a rearward position relative to the fixed seat, it can swing left and right relative to the fixed seat; the front end face of the guide groove is used to push the first locking member to a rearward position when it swings backward to contact the first locking member, and the rear end face of the guide groove is used to push the first locking member to a forward position when it swings backward to contact the first locking member.

6. The multi-directional adjustable support assembly for a seat as described in claim 1, characterized in that, The movable seat includes an end wall, the front side of which forms a mating surface. The mating surface is an arc shape that is concave in the middle and backward in the vertical direction. The lifting seat is against the mating surface so that the lifting seat can slide up and down along the mating surface. The second locking mechanism is installed inside the movable seat.

7. The multi-directional adjustable support assembly for a seat as described in claim 6, characterized in that, The end wall is provided with a vertically extending slide groove, and the lifting seat is provided with a slider that protrudes backward and slides within the slide groove; one side of the slide groove is provided with multiple vertically arranged locking slots, and the second locking mechanism includes a second locking member and a second elastic member. The second locking member is configured to swing left and right relative to the slider, and the second elastic member is used to apply an elastic stress in the left and right direction to the second locking member so that the second locking member can be locked in one of the locking slots.

8. The multi-directional adjustable support assembly for a seat as described in claim 7, characterized in that, The slide includes a first side and a second side opposite to the first side. The locking groove includes a support wall extending from the first side away from the second side and an inclined top wall extending from the end of the support wall away from the second side to the first side. The second locking member is provided with a lock head that matches the shape of the locking groove. When the lock head is placed in the locking groove and the lifting seat is subjected to a downward force, the support wall abuts against the bottom of the lock head to limit the downward movement of the lifting seat relative to the movable seat. When the lock head is placed in the locking groove and the lifting seat is subjected to an upward force, the inclined top wall is used to push the lock head out of the locking groove so that the second locking member is disengaged from the locking groove.

9. The multi-directional adjustable support assembly for a seat as described in claim 8, characterized in that, The second locking member is configured to move relative to the lifting seat in the vertical direction, so that when the second locking member moves to a lower position relative to the lifting seat, it remains relatively fixed to the lifting seat in the horizontal direction, and when the second locking member moves to a higher position relative to the lifting seat, it can swing left and right relative to the lifting seat. The movable seat is provided with an upper actuating part and a lower actuating part. The upper actuating part is used to move the second locking member downward relative to the lifting seat to a lower position when the second locking member moves upward to contact the upper actuating part. The lower actuating part is used to move the second locking member upward relative to the lifting seat to a higher position when the second locking member moves downward to contact the lower actuating part.

10. The multi-directional adjustable support assembly for a seat as described in claim 1, characterized in that, The connecting seat is provided with a guide groove extending vertically. A baffle is detachably fixed on the front side of the lifting seat. The front side of the lifting seat passes through the guide groove from back to front. The baffle is placed on the front side of the connecting seat to place the connecting seat between the lifting seat and the baffle. The elastic element is a tension spring. The upper end of the tension spring is connected to the lifting seat, and the lower end is connected to the connecting seat.

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