Lumbar support assembly and seat
By designing a rotatable lumbar support assembly and utilizing a locking mechanism, the lumbar support body can be adjusted in stages, solving the problem that existing lumbar supports cannot be adjusted individually and adapting to the needs of users of different body types.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FOSHAN KEZHIMEI FURNITURE
- Filing Date
- 2025-08-06
- Publication Date
- 2026-07-21
Smart Images
Figure CN224522712U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of seat technology, and in particular to lumbar support components and seats. Background Technology
[0002] A chair typically includes chair legs, a seat, a backrest, and armrests. The seat can be raised and lowered relative to the chair legs to adjust the seat height; the armrests support the user's arms; and the backrest can rotate relative to the seat to adjust the backrest's reclining angle. The backrest usually includes a backrest and a lumbar support to support the back and lower back respectively.
[0003] However, existing lumbar supports and back supports are relatively fixed settings. The lumbar support cannot be adjusted independently relative to the back support, and cannot adapt to users of different body types. Summary of the Invention
[0004] In view of the above-mentioned shortcomings of the prior art, the technical problem to be solved by the present invention is to propose a lumbar support component and a seat to solve the problem that the lumbar support cannot be adjusted independently in the prior art.
[0005] The technical solution adopted by this utility model to solve its technical problem is a lumbar support component, including:
[0006] Rotatable lumbar support body;
[0007] A connector, one end of which is rotatably connected to the lumbar support body;
[0008] A first locking member and a second locking member, wherein the first locking member is movable relative to the second locking member along a first direction, and the first locking member is rotatably connected to the end of the connecting member away from the lumbar support body; wherein the first locking member has a first locking portion, and the second locking member has a plurality of second locking portions arranged along the first direction; or, the first locking member has a plurality of second locking portions arranged along the first direction, and the second locking member has a first locking portion; the first locking portion is connected to any of the second locking portions to lock the movement of the first locking member along the first direction, thereby locking the rotation of the lumbar support body.
[0009] This utility model has at least the following beneficial effects:
[0010] A first locking part is provided on a first locking member, and multiple second locking parts are provided on a second locking member, with the multiple second locking parts arranged along a first direction. When the first locking member is driven to move along the first direction by the connecting member, the first locking part can be driven to any position of the second locking part and engage with it. Through the cooperation of the first locking part and the second locking part, the first locking member is limited, thereby locking the rotation angle of the lumbar support body. In this way, by having the first locking part engage with the second locking parts at different positions, the rotation angle of the lumbar support body can be adjusted in stages.
[0011] Furthermore, the first locking part is provided with a limiting post, and the second locking part is provided with a limiting groove. The limiting post can extend into the limiting groove to lock the movement of the first locking member along the first direction.
[0012] Furthermore, the first direction has a first positive direction and a first negative direction that are opposite to each other, and the limiting post can pass through multiple limiting grooves in sequence along the first negative direction;
[0013] The limiting groove has a first side and a second side that are opposite to each other. The second side is located in the first negative direction of the first side and gradually slopes towards the first negative direction along the bottom of the limiting groove toward the top.
[0014] Furthermore, it also includes an extension section having an extension surface that gradually slopes in a first negative direction from the bottom of the limiting groove toward the top, and the extension surface is connected to the second side surface located on the outermost side along the first negative direction.
[0015] Furthermore, a plurality of second locking portions are provided on one side of the second locking member, and a reset channel is provided on the other side;
[0016] The first direction has a first positive direction and a first negative direction that are opposite to each other. The second locking member has a beginning end and an end end that are opposite to each other. The first locking part can move from the beginning end along the first negative direction through a plurality of second locking parts to the end end, and move from the reset channel along the first positive direction to the beginning end.
[0017] Furthermore, a first elastic member is provided to provide a force that brings the first locking part and the second locking part into contact;
[0018] The second locking member is further provided with an energy storage surface and a transition surface, one end of the transition surface is connected to the energy storage surface, and the other end is connected to the second locking part;
[0019] The energy storage surface gradually tilts away from the second locking part along the first positive direction, and the first locking part slides along the energy storage surface to deform the first elastic element.
[0020] Furthermore, an unlocking channel communicating with the reset channel is provided at the end, and the first locking part can enter the reset channel along the unlocking channel when it is located at the end.
[0021] Furthermore, the direction perpendicular to the first direction is the second direction;
[0022] The unlocking channel is also provided with a baffle, and there is a gap between the baffle and the end face of the second locking member that allows the first locking part to pass through; the projection of the baffle in the second direction is the first projection; the projection of the side of the second locking member away from the unlocking channel in the second direction is the second projection, and the projection of the side of the second locking member facing the unlocking channel in the second direction is the third projection.
[0023] Wherein, the first projection and the second projection at least partially overlap, and the first projection and the third projection at least partially overlap.
[0024] Furthermore, the first locking member includes a sliding block and a rotating block rotatably disposed on the sliding block. The sliding block can move relative to the second locking member in a first direction. The limiting post is disposed on the rotating block. The rotating block rotates relative to the sliding block to allow the limiting post to extend into or retract from the limiting groove.
[0025] The rotating block or the sliding block is further provided with a first elastic element to provide a force that causes the rotating block to rotate in the direction in which the limiting post extends into the limiting groove.
[0026] Furthermore, it also includes a floating seat and a fixed seat, the floating seat being movable relative to the fixed seat in a first direction, and the second locking member being fixed to the floating seat.
[0027] Furthermore, the first direction has a first positive direction and a first negative direction that are opposite to each other;
[0028] A second elastic element is provided between the floating seat and the fixed seat, the second elastic element being used to provide a force that causes the floating seat to move relative to the fixed seat in a first positive direction.
[0029] Furthermore, a type of seat was also disclosed, including:
[0030] Chair legs and a seat, wherein the seat is movable relative to the chair legs in a first direction;
[0031] Support, connected to the chair seat;
[0032] A lumbar support assembly, which is connected to the support.
[0033] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0034] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:
[0035] Figure 1 This is a schematic diagram of the lumbar support body in an embodiment of the present utility model;
[0036] Figure 2 This is a schematic diagram of the structure of the first locking member, the second locking member, the floating seat, and the fixed seat in the embodiment of this utility model;
[0037] Figure 3 This is a schematic diagram of the structure of the first locking member in an embodiment of this utility model;
[0038] Figure 4 This is a schematic diagram of the structure of the rotating block, the second locking member, and the floating seat in an embodiment of this utility model;
[0039] Figure 5 This is a schematic diagram of the structure of the second locking member and the floating seat in an embodiment of this utility model;
[0040] Figure 6 This is a schematic diagram of the structure of the second locking member in an embodiment of this utility model;
[0041] Figure 7 This is a structural schematic diagram of the seat in an embodiment of the present utility model;
[0042] Figure label:
[0043] 100, Lumbar support assembly; 110, Lumbar support body; 120, Connector; 130, Fixing base; 140, First locking element; 141, Sliding block; 142, Rotating block; 143, First locking part; 150, Second locking element; 151, Second locking part; 1511, First side surface; 1512, Second side surface; 1513, Extension surface; 152, Energy storage surface; 153, Transition surface; 160, Floating seat; 161, Baffle; 162, Reset channel; 163, Unlocking channel; 164, Side plate; 200, Seat; 300, Support; 400, Chair leg. Detailed Implementation
[0044] The embodiments of this utility model are described in detail below. Examples of these 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 utility model, and should not be construed as limiting this utility model.
[0045] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.
[0046] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.
[0047] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.
[0048] In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0049] Please refer to Figures 1 to 2 This embodiment discloses a lumbar support assembly 100, including: a lumbar support body 110, a connector 120, a first locking member 140, and a second locking member 150. The lumbar support body 110 is rotatably disposed, and both ends of the connector 120 are rotatably connected to the lumbar support body 110 and the first locking member 140, respectively. When the lumbar support body 110 rotates, it can drive the connector 120 to rotate, and one end of the connector 120 drives the first locking member 140 to move relative to the second locking member 150 along a first direction. Exemplarily, the first direction can be understood as the height direction.
[0050] Following the above, a first locking part 143 is provided on the first locking member 140, and a plurality of second locking parts 151 are provided on the second locking member 150, with the plurality of second locking parts 151 arranged along a first direction. When the first locking member 140 is driven to move along the first direction by the connecting member 120, the first locking part 143 can be driven to any position of the second locking part 151 and engage with the second locking part 151. Through the cooperation of the first locking part 143 and the second locking part 151, the first locking member 140 is limited, thereby locking the rotation angle of the lumbar support body 110. In this way, by having the first locking part 143 engage with the second locking parts 151 at different positions, the rotation angle of the lumbar support body 110 can be adjusted in stages.
[0051] It is understandable that in order to enable the first locking member 140 to move relative to the second locking member 150 along the first direction, it is necessary to constrain the direction of movement of the first locking member 140. For example, a sliding groove that slides along the first direction can be formed on the second locking member 150 or its periphery, and a slider or pulley can be provided on the first locking member 140 to allow the first locking member 140 to slide along the groove. In this way, the first locking member 140 can move relative to the second locking member 150 along the first direction, allowing the first locking part 143 to engage with the second locking part 151 at different positions, thus achieving graded control of the angle of the lumbar support body 110.
[0052] In some other embodiments, the first locking part 143 can be disposed on the second locking member 150, and a plurality of second locking parts 151 can be disposed on the first locking member 140. The above-mentioned effect can also be achieved through the cooperation of the first locking part 143 and the second locking part 151. That is, the first locking member 140 is provided with a plurality of second locking parts 151 arranged along the first direction, and the second locking member 150 is provided with a first locking part 143; the first locking part 143 is connected to any second locking part 151 to lock the movement of the first locking member 140 along the first direction, thereby locking the rotation of the waist support body 110.
[0053] It should be noted that the first locking part 143 and the second locking part 151 are connected, which can be understood as a structure that can achieve position locking, such as two locking surfaces abutting each other, a pin being inserted into a socket, or a limiting post extending into a limiting groove.
[0054] It should also be noted that the rotation of the lumbar support body 110 is to adjust the angle of the support surface of the lumbar support body 110, so as to adapt to users of different body sizes.
[0055] Please refer to Figure 3In this embodiment, the first locking part 143 is provided with a limiting post, and the second locking part 151 is provided with a limiting groove. The limiting post can extend into the limiting groove to lock the movement of the first locking member 140 along the first direction. That is, when the limiting post is not extended into the limiting groove, the first locking member 140 can move relative to the second locking member 150 along the first direction. When the limiting post extends into the limiting groove, the first locking member 140 cannot move relative to the second locking member 150 along the first direction without external force. Thus, through the locking structure of the limiting post and the limiting groove, the angle of the lumbar support body 110 can be adjusted in stages.
[0056] Following the above, when the limiting post extends into one of the limiting grooves, if the angle of the waist support body 110 needs to be adjusted again, the limiting post needs to be disengaged from the current limiting groove. Therefore, a structure or driving member is needed to enable the limiting post to disengage from the limiting groove. In some other embodiments, a pusher or toggle member connected to the limiting post can be provided. By driving the pusher or toggle member, the limiting post can be moved in the depth direction of the limiting groove, thereby causing the limiting post to exit the limiting groove.
[0057] Please refer to Figure 6 In this embodiment, the first direction has a first positive direction and a first negative direction that are opposite to each other. The limiting post can pass through multiple limiting grooves sequentially along the first negative direction. The limiting groove has a first side surface 1511 and a second side surface 1512 that are opposite to each other. The second side surface 1512 is located in the first negative direction of the first side surface 1511, and the second side surface 1512 gradually tilts towards the first negative direction from the bottom to the top of the limiting groove. For example, the first negative direction can be understood as a vertically downward direction, and the first positive direction can be understood as a vertically upward direction.
[0058] Specifically, after the limiting post extends into the limiting groove, the lumbar support body 110 continues to rotate, driving the connecting piece 120 to continue rotating, thereby causing the first locking piece 140 to move downwards. At this time, the limiting post is pushed to slide along the second side surface 1512 until it slides out of the limiting groove. That is, since the second side surface 1512 gradually tilts towards the first negative direction from the bottom to the top of the limiting groove, when the limiting post is subjected to a vertically downward force, this force can drive the limiting post to slide along the second side surface 1512 and slide into the limiting groove. Thus, the limiting post can be disengaged from the limiting groove simply by the continued rotation of the lumbar support body 110, without the need for additional structures such as pushers or toggle mechanisms. Of course, in order to ensure that the limiting post remains within the limiting groove after the angle of the lumbar support body 110 is adjusted and does not disengage under non-external force, a first elastic element is required to provide the force for the limiting post to extend into the limiting groove. For example, the first elastic element can be set as an elastic body such as a torsion spring or a tension spring.
[0059] Please refer to Figure 5In this embodiment, a plurality of second locking portions 151 are provided on one side of the second locking member 150, and a reset channel 162 is provided on the other side; the first direction has a first positive direction and a first negative direction that are opposite to each other, the second locking member 150 has a beginning end and an end end that are opposite to each other, the first locking portion 143 can move from the beginning end along the first negative direction through a plurality of second locking portions 151 to the end end, and move from the reset channel 162 along the first positive direction to the beginning end.
[0060] Specifically, the second locking member 150 also has an end opposite to the starting end, and an unlocking channel 163 is provided at the end. When the first locking part 143 moves downward from the starting end and passes through multiple second locking parts 151 in sequence until the end disengages from the last second locking part 151, the first locking part 143 enters the unlocking channel 163 under the elastic force of the first elastic member, and gradually moves to the reset channel 162; finally, the waist support body 110 is rotated in the opposite direction, causing the connecting member 120 to rotate in the opposite direction, and the connecting member 120 causes the first locking part 143 on the first locking member 140 to reset to the starting end along the reset channel 162. In this way, the unlocking and reset of the first locking part 143 can be realized.
[0061] Please refer to Figure 6 Furthermore, the second locking member 150 also includes an extension section having an extension surface 1513. The extension surface 1513 gradually slopes towards the top along the bottom of the limiting groove in the first negative direction, and the extension surface 1513 is in contact with the second side surface 1512 located on the outermost side along the first negative direction.
[0062] Specifically, when the limiting post moves along the first negative direction to the last limiting groove, if the limiting post continues to move along the first negative direction, it will gradually move along the second side surface 1512 and the extension surface 1513, and finally enter the unlocking channel 163 under the elastic force of the first elastic element after disengaging from the extension surface 1513. The purpose of setting the extension surface 1513 is to allow the limiting post to further compress the first elastic element after the second side surface 1512, thereby further increasing the deformation of the first elastic element to store sufficient elastic force. This ensures that after the limiting post disengages from the extension surface 1513, the first elastic element has sufficient elastic force to drive the limiting post to move within the unlocking channel 163. Simultaneously, the extension surface 1513 also extends the time it takes for the limiting post to disengage from the limiting groove, serving to distinguish it from other limiting grooves and indicating the position of the last limiting groove. This allows the operator to know that when the lumbar support body 110 rotates to the corresponding angle, if the lumbar support body 110 continues to rotate, the limiting post will soon reach the unlocking channel 163 for unlocking and resetting, making the operation clearer and more intuitive.
[0063] In this embodiment, a first elastic member is also provided to provide a force for engaging the first locking portion 143 and the second locking portion 151. The second locking member 150 is further provided with an energy storage surface 152 and a transition surface 153. One end of the transition surface 153 is connected to the energy storage surface 152, and the other end is connected to the second locking portion 151. The energy storage surface 152 gradually tilts away from the second locking portion 151 along the first positive direction, and the first locking portion 143 slides along the energy storage surface 152 to deform the first elastic member. Specifically, when the limiting post moves along the first positive direction in the reset channel 162, the limiting post is gradually pushed outward by the energy storage surface 152, thereby gradually squeezing the first elastic member and accumulating elastic force, so that after the limiting post disengages from the energy storage surface 152, it drives the limiting post to move to the transition surface 153, thereby resetting to the beginning.
[0064] Please refer to Figure 4 and Figure 5 Furthermore, the direction perpendicular to the first direction is the second direction; a baffle 161 is also provided in the unlocking channel 163, and there is a gap between the baffle 161 and the end face of the second locking member 150 that allows the first locking part 143 to pass through; the projection of the baffle 161 in the second direction is the first projection; the projection of the side of the second locking member 150 away from the unlocking channel 163 in the second direction is the second projection, and the projection of the side of the second locking member 150 facing the unlocking channel 163 in the second direction is the third projection; wherein, the first projection and the second projection at least partially overlap, and the first projection and the third projection at least partially overlap. For example, the second direction is the width direction of the second locking member 150.
[0065] The first and second projections at least partially overlap, so that when the limiting post passes through multiple limiting slots and enters the unlocking channel 163, it can be blocked by the baffle 161. This allows the baffle 161 to restrict the limiting post from continuing to move in the second direction, effectively locking it at the final position. This not only increases the adjustable angle range of the lumbar support body 110 but also serves to indicate that the current position is the last position, reminding the operator and making operation clearer and more intuitive. Furthermore, a floating seat 160 is provided, and a second locking member 150 is disposed on the floating seat 160. The floating seat 160 has a side plate 164, and a baffle 161 is disposed on the side plate 164 of the floating seat 160. The side plate 164 can prevent the limiting post from continuing to move along the first negative direction, so that after the limiting post is disengaged from the second locking member 150, it will inevitably enter the unlocking channel 163 under the action of the first elastic member and be blocked by the baffle 161, thereby improving the utilization rate of the last position and avoiding the phenomenon that the first locking member 140 slides excessively along the first negative direction and crosses the last position, resulting in the last position being unusable.
[0066] Following the above, the first projection and the third projection at least partially overlap. The movement path of the limiting post within the unlocking channel 163 is as follows: After the limiting post begins to enter the unlocking channel 163, the waist support body 110 is rotated in the reverse direction, thereby causing the limiting post to gradually move upward within the unlocking channel 163; after passing the gap between the baffle 161 and the end face of the second locking member 150, the waist support body 110 is rotated in the forward direction, thereby causing the limiting post to gradually move downward within the unlocking channel 163; finally, after entering the reset channel 162, the waist support body 110 is rotated in the reverse direction again, causing the limiting post to move upward along the reset channel 162 until it is reset. This makes the movement path of the limiting post within the unlocking channel 163 more complex, requiring alternating forward and reverse rotation of the waist support body 110 to prevent misoperation and avoid an abrupt unlocking process. Furthermore, the end face of the second locking member 150 is an arc surface with smooth transitions at all points to prevent the limiting post from getting stuck on the end face of the second locking member 150.
[0067] In some other embodiments, the first projection is offset from the second projection, and the first projection is offset from the third projection. After the limiting post disengages from the second locking member 150, it has a certain speed along the first negative direction, which is sufficient to move the limiting post to the baffle 161 and abut against it.
[0068] Please refer to Figure 3 In this embodiment, the first locking member 140 includes a sliding block 141 and a rotating block 142 rotatably disposed on the sliding block 141. The sliding block 141 can move relative to the second locking member 150 in a first direction. A limiting post is disposed on the rotating block 142, and the rotating block 142 rotates relative to the sliding block 141 to allow the limiting post to extend into or retract from the limiting groove. A first elastic member is also provided on the rotating block 142 or the sliding block 141 to provide a force that causes the rotating block 142 to rotate in the direction in which the limiting post extends into the limiting groove. That is, by sliding the sliding block 141, the limiting post is moved to different positions within the limiting groove, and under the action of the first elastic member, the rotating block 142 rotates relative to the sliding block 141, thereby allowing the limiting post to enter the limiting groove and achieve position locking.
[0069] Please refer to Figure 2 In this embodiment, a floating seat 160 and a fixed seat 130 are also included. The floating seat 160 is movable relative to the fixed seat 130 in a first direction, and a second locking member 150 is fixed to the floating seat 160. A second elastic member is also provided between the floating seat 160 and the fixed seat 130. The second elastic member is used to provide a force that causes the floating seat 160 to move relative to the fixed seat 130 in the first positive direction. For example, the second elastic member can be configured as an elastic body such as a tension spring.
[0070] Specifically, the floating seat 160 can float up and down relative to the fixed seat 130. When the user sits down, their lower back first contacts the lumbar support body 110, causing it to descend with the lower back, thus preventing the lumbar support body 110 from remaining stationary and causing wrinkles in the user's clothing. When the user stands up, the lumbar support body 110 can move upward and return to its original position under the action of the second elastic element. Furthermore, guide wheels are provided between the floating seat 160 and the fixed seat 130 to make the up-and-down floating process of the floating seat 160 smoother.
[0071] Please refer to Figure 7 This embodiment also discloses a seat, including: a chair leg 400 and a chair seat 200, the chair seat 200 being movable relative to the chair leg 400 in a first direction; a support 300 connected to the chair seat 200; and a lumbar support assembly 100 connected to the support 300.
[0072] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.
Claims
1. A lumbar support assembly, characterized in that, include: Rotatable lumbar support body; A connector, one end of which is rotatably connected to the lumbar support body; A first locking member and a second locking member, wherein the first locking member is movable relative to the second locking member along a first direction, and the first locking member is rotatably connected to the end of the connecting member away from the lumbar support body; wherein the first locking member has a first locking portion, and the second locking member has a plurality of second locking portions arranged along the first direction; or, the first locking member has a plurality of second locking portions arranged along the first direction, and the second locking member has a first locking portion; the first locking portion is connected to any of the second locking portions to lock the movement of the first locking member along the first direction, thereby locking the rotation of the lumbar support body.
2. The lumbar support assembly according to claim 1, characterized in that, The first locking part is provided with a limiting post, and the second locking part is provided with a limiting groove. The limiting post can extend into the limiting groove to lock the movement of the first locking member along the first direction.
3. The lumbar support assembly according to claim 2, characterized in that, The first direction has a first positive direction and a first negative direction that are opposite to each other, and the limiting post can pass through multiple limiting grooves in sequence along the first negative direction; The limiting groove has a first side and a second side that are opposite to each other. The second side is located in the first negative direction of the first side and gradually slopes towards the first negative direction along the bottom of the limiting groove toward the top.
4. The lumbar support assembly according to claim 3, characterized in that, It also includes an extension section having an extension surface that gradually slopes in a first negative direction from the bottom of the limiting groove toward the top, and the extension surface is connected to the second side surface located on the outermost side along the first negative direction.
5. The lumbar support assembly according to claim 1, characterized in that, The second locking member has a plurality of second locking parts on one side and a reset channel on the other side; The first direction has a first positive direction and a first negative direction that are opposite to each other. The second locking member has a beginning end and an end end that are opposite to each other. The first locking part can move from the beginning end along the first negative direction through a plurality of second locking parts to the end end, and move from the reset channel along the first positive direction to the beginning end.
6. The lumbar support assembly according to claim 5, characterized in that, It also includes a first elastic member for providing a force that brings the first locking part and the second locking part into contact; The second locking member is further provided with an energy storage surface and a transition surface, one end of the transition surface is connected to the energy storage surface, and the other end is connected to the second locking part; The energy storage surface gradually tilts away from the second locking part along the first positive direction, and the first locking part slides along the energy storage surface to deform the first elastic element.
7. The lumbar support assembly according to claim 5, characterized in that, An unlocking channel communicating with the reset channel is also provided at the end. When the first locking part is located at the end, it can enter the reset channel along the unlocking channel.
8. The lumbar support assembly according to claim 7, characterized in that, The direction perpendicular to the first direction is the second direction; The unlocking channel is also provided with a baffle, and there is a gap between the baffle and the end face of the second locking member that allows the first locking part to pass through; the projection of the baffle in the second direction is the first projection; the projection of the side of the second locking member away from the unlocking channel in the second direction is the second projection, and the projection of the side of the second locking member facing the unlocking channel in the second direction is the third projection. Wherein, the first projection and the second projection at least partially overlap, and the first projection and the third projection at least partially overlap.
9. The lumbar support assembly according to claim 2, characterized in that, The first locking member includes a sliding block and a rotating block rotatably disposed on the sliding block. The sliding block can move relative to the second locking member in a first direction. The limiting post is disposed on the rotating block. The rotating block rotates relative to the sliding block to allow the limiting post to extend into or retract from the limiting groove. The rotating block or the sliding block is further provided with a first elastic element to provide a force that causes the rotating block to rotate in the direction in which the limiting post extends into the limiting groove.
10. The lumbar support assembly according to claim 1, characterized in that, It also includes a floating seat and a fixed seat, the floating seat being movable relative to the fixed seat in a first direction, and the second locking member being fixed to the floating seat.
11. The lumbar support assembly according to claim 10, characterized in that, The first direction has a first positive direction and a first negative direction that are opposite to each other; A second elastic element is provided between the floating seat and the fixed seat, the second elastic element being used to provide a force that causes the floating seat to move relative to the fixed seat in a first positive direction.
12. A seat, characterized in that, include: Chair legs and a seat, wherein the seat is movable relative to the chair legs in a first direction; Support, connected to the chair seat; The lumbar support assembly as described in any one of claims 1 to 11, wherein the lumbar support assembly is connected to the support.