Rotary adjustment mechanism and seat

Abstract

The application discloses a rotating adjusting mechanism and a seat. The rotating adjusting mechanism comprises a first body, a second body, an unlocking structure, a locking structure and an elastic piece. The first body comprises a first tooth part. The first body is rotationally connected to the second body. The unlocking structure has a second tooth part and a rotating boss. The second tooth part is in abutment with the first tooth part. The locking structure is slidingly connected with the second body to enter or exit a containing cavity. The rotating boss is inserted into a rotating groove. The elastic piece applies an elastic force to the locking structure. The seat comprises the rotating adjusting mechanism. The rotating adjusting mechanism has multiple gears. When in use, a user rotates the first body upward to switch the rotating adjusting mechanism from an initial gear to a working gear. After use, the user continues to rotate the first body upward to unlock and then rotates the first body downward to switch to the initial gear. The gear adjustment can be realized by rotating the first body upward or downward without the cooperation of a button, single-hand operation is realized, and the adjustment is convenient.

Description

Technical Field

[0001] This invention relates to the field of seating technology, and more particularly to a rotary adjustment mechanism and a seat. Background Technology

[0002] To adapt to various application scenarios, the seat integrates multiple adjustment functions, making the seat highly flexible and practical. In related technologies, the corresponding components are usually adjusted by rotation, such as adjusting the rotation angle of the foot pedal to switch between the foot pedal's storage and working states. However, the adjustment of the rotation level usually requires a combination of button and manual operation, which involves many adjustment actions and requires both hands, making the operation relatively inconvenient. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a rotary adjustment mechanism with high convenience of rotary adjustment.

[0004] The present invention also proposes a seat having the above-mentioned rotation adjustment mechanism.

[0005] A rotary adjustment mechanism according to a first aspect of the present invention includes:

[0006] The first body has an internal receiving cavity, and the first body includes a first tooth, which is located inside the receiving cavity;

[0007] The second body is rotatably connected to the first body;

[0008] The unlocking structure has a second tooth and a rotating boss. The second tooth abuts against the first tooth. The first tooth can follow the rotation of the first body to drive the second tooth to rotate the rotating boss and move the unlocking structure.

[0009] A locking structure is slidably connected to the second body and can be driven to move relative to the second body to enter and exit the receiving cavity. The locking structure has a rotating groove, at least a portion of the rotating boss is inserted into the rotating groove and can move within the rotating groove. The rotating groove is provided with opposing first groove walls and second groove walls.

[0010] An elastic element is connected to the locking structure and is capable of applying an elastic force to the locking structure to move toward the receiving cavity;

[0011] The rotary adjustment mechanism has an initial position, a working position, and an unlocking position. The rotary adjustment mechanism is configured such that: when switching from the initial position to the working position, the first body rotates relative to the second body around a first rotation direction, causing the rotating boss to move to abut against the first groove wall of the rotating groove; a portion of the locking structure is accommodated in the receiving cavity and abuts against the inner wall of the receiving cavity in the opposite direction of the rotation direction of the first body; when switching from the working position to the unlocking position, while the first body rotates relative to the second body around the first rotation direction, the first tooth drives the unlocking structure to push the locking structure to move, causing the locking structure to exit the receiving cavity; when switching from the unlocking position to the initial position, the first body rotates relative to the second body around a second rotation direction, causing the rotating boss to rotate to abut against the second groove wall of the rotating groove; the locking structure is driven by the elastic element to move towards the receiving cavity, and a portion of the locking structure is inserted into the receiving cavity; the first rotation direction is opposite to the second rotation direction.

[0012] The rotary adjustment mechanism according to embodiments of the present invention has at least the following beneficial effects:

[0013] The rotary adjustment mechanism of this invention has multiple gears, each with a corresponding function. When needed, the user simply rotates the first main body upwards to switch the rotary adjustment mechanism from the initial gear to the working gear. When finished, the user simply rotates the first main body upwards to unlock it, then rotates it downwards to switch the rotary adjustment mechanism back to the initial gear and into a stowed state, saving space. The entire gear adjustment process can be achieved by rotating the first main body upwards or downwards without the need for other buttons, allowing the user to operate with one hand and providing high convenience.

[0014] According to some embodiments of the present invention, the first body includes a first locking tooth located within the receiving cavity, the first locking tooth having a first limiting surface, the locking structure including a second locking tooth having a second limiting surface, the first limiting surface and the second limiting surface being parallel to the moving direction of the locking structure, and the second limiting surface providing a force toward the first limiting surface toward the first rotation direction.

[0015] According to some embodiments of the present invention, the first locking tooth has a first pushing surface, the second locking tooth has a second pushing surface, the first pushing surface and the second pushing surface are inclined and abut against each other, and during the process of the rotating boss moving from abutting against the second groove wall to abutting against the first groove wall, the rotation angle of the first body is a1; during the process of the first limiting surface switching from abutting against the second limiting surface to separating from each other and abutting again, the rotation angle of the first body is a2; a1=n*a2, where n is a positive integer not less than 2;

[0016] The rotary adjustment mechanism has several intermediate gears located between the initial gear and the working gear. During the process of switching the rotary adjustment mechanism from the initial gear to the intermediate gear, during the process of switching between adjacent intermediate gears, or during the process of switching from the intermediate gear to the working gear, the first body rotates relative to the second body around the first rotation direction, and the first locking tooth and the second locking tooth switch from a mutually abutting state to a mutually disengaged state and then abutting each other again.

[0017] According to some embodiments of the present invention, the distance by which the locking structure moves under the push of the first locking tooth is less than the length of the rotating boss along the moving direction of the locking structure.

[0018] According to some embodiments of the present invention, the first tooth has an inclined first abutting surface and a first limiting portion toward the second tooth, and the second tooth has an inclined second abutting surface and a second limiting portion toward the first tooth. When the rotary adjustment mechanism switches from the initial position to the working position, the first abutting surface abuts against the second abutting surface and pushes the rotating boss to move in the rotating groove. When the rotary adjustment mechanism switches from the working position to the unlocking position, the first abutting surface and the second abutting surface abut against each other and move relative to each other until the first limiting portion and the second limiting portion limit each other in the rotation direction of the first body.

[0019] According to some embodiments of the present invention, the second limiting portion is configured as a limiting groove, and the first limiting portion is configured as a limiting protrusion. The limiting protrusion can be inserted into the limiting groove. The second tooth portion further includes a first protrusion portion and a second protrusion portion, which define the limiting groove. The second abutting surface is adjacent to the first protrusion portion. The second protrusion portion protrudes toward the first tooth portion relative to the first protrusion portion, or the width of the second protrusion portion along the rotation direction of the first body is greater than the width of the first protrusion portion along the rotation direction of the first body.

[0020] According to some embodiments of the present invention, the second tooth further includes a first protrusion and a second protrusion, the first protrusion and the second protrusion defining a limiting channel, the first limiting portion being configured as a limiting protrusion, the limiting protrusion being capable of being inserted into the limiting channel and moving within the limiting channel;

[0021] The rotary adjustment mechanism also has a highest gear located after the unlocking gear. During the process of switching the rotary adjustment mechanism from the unlocking gear to the highest gear, the first body rotates relative to the second body around the first rotation direction, and the limiting protrusion moves along the limiting channel until the first protrusion or the second protrusion abuts.

[0022] According to some embodiments of the present invention, one of the first body and the second body has a first limiting wall and a second limiting wall disposed opposite to each other, and the other has a limiting part, the limiting part being located between the first limiting wall and the second limiting wall, and being able to move between the first limiting wall and the second limiting wall as the first body rotates;

[0023] When the rotary adjustment mechanism is in the initial position, the limiting part abuts against the first limiting wall; when the rotary adjustment mechanism is in the unlocking position, the limiting part abuts against the second limiting wall.

[0024] According to some embodiments of the present invention, the unlocking structure further includes a base, the second tooth and the rotating boss are respectively connected to opposite sides of the base, the first tooth and the locking structure are respectively located on opposite sides of the base, and the base can abut against the locking structure;

[0025] The first body and the second body interlock to form a closed active space, and the unlocking structure, the locking structure and the elastic element are accommodated within the active space.

[0026] A seat according to a second aspect embodiment of the present invention includes:

[0027] The rotation adjustment mechanism of the first aspect embodiment;

[0028] The seat body, the second body being connected to the seat body;

[0029] Functional components are integrally connected to the first main body.

[0030] Additional aspects and advantages of the 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

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0032] Figure 1 This is an overall schematic diagram of the rotary adjustment mechanism of the present invention at different gear positions;

[0033] Figure 2 This is a cross-sectional view of the rotary adjustment mechanism of the present invention in its initial position;

[0034] Figure 3 This is a cross-sectional view of the rotary adjustment mechanism of the present invention in the unlocked position;

[0035] Figure 4 This is an exploded view of one embodiment of the rotary adjustment mechanism of the present invention;

[0036] Figure 5 for Figure 4 A schematic diagram of one embodiment of the first main body;

[0037] Figure 6 for Figure 4 A schematic diagram of one embodiment of the unlocking structure;

[0038] Figure 7 for Figure 4 A schematic diagram of one embodiment of the locking structure;

[0039] Figure 8 for Figure 5 Enlarged view of point A in the middle;

[0040] Figure 9 This is a schematic diagram illustrating the cooperation between the first and second entities;

[0041] Figure 10 for Figure 5 Enlarged view of point B in the middle;

[0042] Figure 11 for Figure 4 A schematic diagram of one embodiment of the second main body;

[0043] Figure 12 for Figure 4 A schematic diagram of another embodiment of the unlocking structure.

[0044] Figure label:

[0045] First body 100, receiving cavity 110, first tooth 120, first abutting surface 121, first limiting part 122, first limiting wall 130, second limiting wall 140, first locking tooth 150, first limiting surface 151, first pushing surface 152, base 160; Second body 200, limiting rib 210, sliding channel 220, sliding groove 230; Unlocking structure 300, second tooth 310, second abutting surface 311, second limiting part 312, first protrusion 313, second protrusion 314, limiting channel 315, rotating boss 320, base 330; Locking structure 400, rotating groove 410, first groove wall 411, second groove wall 412, second locking tooth 420, second limiting surface 421, second pushing surface 422, moving body 430; Elastic element 500. Detailed Implementation

[0046] Embodiments of the present invention 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 the present invention, and should not be construed as limiting the present invention.

[0047] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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 limiting this invention.

[0048] In the description of this invention, "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.

[0049] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0050] In the description of this invention, 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 the invention. 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.

[0051] An embodiment of the present invention provides a rotary adjustment mechanism that allows the first body 100 to rotate relative to the second body 200 to different positions to achieve corresponding functions. (See reference...) Figure 1 The rotary adjustment mechanism in this embodiment has an initial position, a working position, and an unlocking position, such as... Figure 1 In Figure (a), the rotary adjustment mechanism is in its initial position, with the first main body 100 and the second main body 200 at a certain angle to each other. The first main body 100 is located below the second main body 200, and the rotary adjustment mechanism is in a retracted state. Figure 1 In Figure (b), the rotary adjustment mechanism is in the working position. The first main body 100 rotates upward relative to the second main body 200 until it is flush with the second main body 200, providing support to the user. The rotary adjustment mechanism is in working condition. Figure 1 In Figure (c), the rotary adjustment mechanism is in the unlocked position. The first body 100 rotates upward relative to the second body 200 until the first body 100 is tilted up. The first body 100 and the second body 200 are at a certain angle to each other, and the first body 100 is unlocked.

[0052] Reference Figures 2 to 4 The rotation adjustment mechanism includes a first body 100, a second body 200, an unlocking structure 300, a locking structure 400, and an elastic element 500. The first body 100 and the second body 200 are rotatably connected. The first body 100 can be driven to rotate relative to the second body 200. The unlocking structure 300 and the locking structure 400 cooperate with each other. The locking structure 400 is used to restrict the rotation of the first body 100 relative to the second body 200, so that the first body 100 and the second body 200 are kept in a fixed position in the corresponding direction. The unlocking structure 300 is used to release the lock of the first body 100, so that the first body 100 returns to a rotatable state and can be adjusted in terms of rotation angle.

[0053] Reference Figures 5 to 7The first body 100 has a receiving cavity 110 inside. The first body 100 has a first tooth 120 located in the receiving cavity 110. The unlocking structure 300 has a second tooth 310 and a rotating boss 320. The first tooth 120 and the second tooth 310 abut against each other. When the first body 100 is driven to rotate relative to the second body 200, the first tooth 120 follows the rotation of the first body 100 and pushes the second tooth 310, causing the unlocking structure 300 to rotate. At this time, the rotating boss 320 is in a rotating state. The locking structure 400 is slidably connected to the second body 200 and has only one degree of freedom of movement. The locking structure 400 can be driven to move relative to the second body 200, allowing it to enter and exit the receiving cavity 110. When the locking structure 400 is withdrawn from the receiving cavity 110, the first body 100 is in an unlocked state. When part of the locking structure 400 is inserted into the receiving cavity 110, the rotation of the first body 100 relative to the second body 200 in the corresponding direction is limited. In addition, the locking structure 400 has a rotating groove. 410. The rotating boss 320 of the unlocking structure 300 is inserted into the rotating groove 410. When the unlocking structure 300 rotates, the rotating boss 320 moves in the rotating groove 410. The two oppositely arranged groove walls in the rotating groove 410 form a first groove wall 411 and a second groove wall 412, respectively. The first groove wall 411 and the second groove wall 412 are used to limit the rotation range of the rotating boss 320 and limit the rotating boss 320 when it rotates to the corresponding position, so as to restrict the rotation of the unlocking structure 300. The elastic element 500 is connected to the locking structure 400 and can apply an elastic force to the locking structure 400 to move toward the receiving cavity 110. It should be noted that the first tooth 120 can also push the unlocking structure 300 to move, so that the unlocking structure 300 moves away from the first tooth 120 and pushes the locking structure 400 to move. At this time, the locking structure 400 moves away from the receiving cavity 110, the first elastic element 500 is compressed, and the first body 100 switches from the locked state to the unlocked state. When the locking structure 400 completely exits the receiving cavity 110, the first body 100 rotates in the opposite direction. When the first tooth 120 re-contacts the second tooth 310, the elastic element 500 releases the elastic force and pushes the locking structure 400 to re-insert into the receiving cavity 110, so that the first body 100 switches from the unlocked state to the locked state.

[0054] Specifically, refer to Figure 2When the rotary adjustment mechanism is in the initial position, a portion of the unlocking structure 300 is located within the receiving cavity 110, the rotating boss 320 abuts against the second groove wall 412 of the rotating groove 410, the elastic member 500 is in an extended state, and the first tooth 120 contacts the second tooth 310. When the rotary adjustment mechanism switches from the initial position to the working position, the user drives the first body 100 to rotate relative to the second body 200 around the first rotation direction (i.e., upward). The second tooth 310 is pushed by the first tooth 120 and follows the rotation of the first tooth 120, causing the unlocking structure 300 to rotate with the first body 100. The unlocking structure 300 only has rotational motion. While the unlocking structure 300 rotates, the rotating boss 320 moves along the rotating groove 410. When the rotary adjustment mechanism is switched to the working position, the rotating boss 320 moves to abut against the first groove wall 411 of the rotating groove 410. In addition, during this process, part of the locking structure 400 is accommodated in the receiving cavity 110 and abuts against the inner wall of the receiving cavity 110 in the opposite direction of the rotation direction of the first body 100. That is, the rotation of the first body 100 in the second rotation direction (the first rotation direction is opposite to the second rotation direction) is restricted, so that the first body 100 can only rotate in the first rotation direction. Therefore, when the rotary adjustment mechanism is switched to the working position, due to the limitation of the first body 100 in the second rotation direction by the locking structure 400, the first body 100 cannot rotate downward, which can provide stable support to the user and stabilize in the working position.

[0055] When the rotary adjustment mechanism switches from the working position to the unlocking position, the first body 100 continues to rotate upward in the first rotation direction. Since the rotating boss 320 is limited by the first groove wall 411 at this time, the unlocking structure 300 cannot continue to rotate in the first rotation direction. When the first tooth 120 follows the first body 100 to rotate in the first rotation direction, the first tooth 120 pushes the second tooth 310, causing the unlocking structure 300 to move away from the first body 100, and at the same time pushes the locking structure 400 to slowly exit the receiving cavity 110. When the first body 100 rotates to the highest position, the rotary adjustment mechanism switches to the unlocking position. At this time, the locking structure 400 completely exits the receiving cavity 110, and the rotation restriction of the first body 100 in the second rotation direction is released.

[0056] When the rotary adjustment mechanism switches from the unlock position to the initial position, the first body 100 rotates relative to the second body 200 along the second rotation direction. The rotating boss 320 moves in the rotating groove 410 following the rotation of the first body 100 and moves to abut against the second groove wall 412. At this time, the unlocking structure 300 no longer rotates along the second rotation direction, and the locking structure 400 is driven by the elastic force of the elastic element 500 to move toward the receiving cavity 110. Since the first tooth 120 is in contact with the second tooth 310, the second tooth 310 pushes the first tooth 120 to move away from the locking structure 400 until part of the locking structure 400 is reinserted into the receiving cavity 110, and the unlocking structure 300 returns to its original position. The first body 100 is once again limited by the locking structure 400 along the second rotation direction.

[0057] The rotary adjustment mechanism of this invention has multiple gears, each with a corresponding function. When needed, the user simply rotates the first main body 100 upwards to switch the rotary adjustment mechanism from the initial gear to the working gear. The downward rotation of the first main body 100 is restricted, maintaining it in the working gear and providing stable support to the user. When finished, the user simply continues to rotate the first main body 100 upwards to unlock it, and then rotates it downwards to switch the rotary adjustment mechanism back to the initial gear and into a retractable state, saving space occupied by the rotary adjustment mechanism. The entire gear adjustment process can be achieved by rotating the first main body 100 upwards or downwards without the need for other buttons, allowing the user to operate it with one hand, providing high convenience.

[0058] In one embodiment, such as Figure 6 and Figure 8 As shown, the first tooth 120 has an inclined first abutment surface 121, and the second tooth 310 has an inclined second abutment surface 311. The inclination angles of the first abutment surface 121 and the second abutment surface 311 match. When the rotary adjustment mechanism switches between the initial position and the working position, and between the working position and the unlocking position, the first abutment surface 121 and the second abutment surface 311 contact and abut against each other, so that the interaction force between the two drives the first body 100 or the unlocking structure 300 to perform corresponding actions, as follows:

[0059] When the rotary adjustment mechanism switches from the initial position to the working position, the first body 100 rotates along the first rotation direction, and the first abutting surface 121 abuts against the second abutting surface 311. At this time, the first tooth 120 rotates along the first rotation direction, and the first abutting surface 121 and the second abutting surface 311 do not move relative to each other. The first abutting surface 121 pushes the second abutting surface 311, causing the unlocking structure 300 to rotate synchronously with the first body 100. When the rotary adjustment mechanism switches from the working position to the unlocking position, the rotation of the unlocking structure 300 is restricted by the first groove wall 411. As the first tooth 120 rotates, the first abutting surface 121 and the second abutting surface 311 move relative to each other. The first abutting surface 121 pushes the second abutting surface 311, causing the unlocking structure 300 to move toward the locking structure 400, and driving the locking structure 400 to slowly exit the receiving cavity 1. 10; When the rotary adjustment mechanism switches from the unlock position to the working position, the first body 100 rotates along the second rotation direction, the rotating boss 320 is no longer restricted by the first groove wall 411, the first abutment surface 121 pushes the second abutment surface 311, the unlocking structure 300 rotates along the second rotation direction, and the first abutment surface 121 and the second abutment surface 311 do not move relative to each other; When the rotary adjustment mechanism switches from the working position to the initial position, the rotating boss 320 is restricted by the second groove wall 412. As the first body 100 rotates along the second rotation direction, the unlocking structure 300 is subjected to the elastic force of the elastic element 500, causing the second abutment surface 311 to move relative to the second abutment surface 311 as the first tooth 120 rotates. When the rotary adjustment mechanism switches to the initial position, the second abutment surface 311 returns to complete contact with the first abutment surface 121.

[0060] Furthermore, the first tooth 120 also includes a first limiting part 122 facing the second tooth 310, the first limiting part 122 being located at the end of the first abutment surface 121. The second tooth 310 also includes a second limiting part 312 facing the first tooth 120, the second limiting part 312 being located at the end of the second abutment surface 311. When the rotary adjustment mechanism switches from the working position to the unlocking position, as the first abutment surface 121 and the second abutment surface 311 move relative to each other, the first limiting part 122 and the second limiting part 312 gradually approach each other. When the rotary adjustment mechanism switches to the unlocking position, the first limiting part 122 and the second limiting part 312 mutually limit each other in the rotation direction of the first body 100, preventing the first body 100 from rotating excessively upwards and affecting the normal unlocking of the first body 100.

[0061] One of the first limiting part 122 and the second limiting part 312 is configured as a groove, and the other is configured as a protrusion. When the protrusion is inserted into the groove, it is supported by the groove wall, thereby achieving mutual limiting of the first limiting part 122 and the second limiting part 312. In one embodiment of the present invention, the first limiting part 122 is configured as a limiting protrusion, and the second limiting part 312 is configured as a limiting groove. When the rotation adjustment mechanism is in the unlocked position, the limiting protrusion is inserted into the limiting groove.

[0062] Furthermore, the second tooth 310 also includes a first protrusion 313 and a second protrusion 314, which define a limiting groove. The second abutment surface 311 is adjacent to the first protrusion 313. When the rotary adjustment mechanism switches from the working position to the unlocking position, the first abutment surface 121 and the second abutment surface 311 move relative to each other, and the limiting protrusion gradually approaches the first protrusion 313. When the rotary adjustment mechanism switches to the unlocking position, the limiting protrusion passes over the first protrusion 313 and inserts into the limiting groove. In one embodiment, the second protrusion 314 protrudes towards the first tooth 120 relative to the first protrusion 313. When the limiting protrusion tends to move towards the second protrusion 314, the larger protrusion of the second protrusion 314 provides greater resistance to the movement of the limiting protrusion, thereby stabilizing the limiting protrusion within the limiting groove and preventing the first body 100 from rotating excessively upwards and thus exceeding the unlocking position. In another embodiment, the width of the second protrusion 314 along the rotation direction of the first body 100 is greater than the width of the first protrusion 313 along the rotation direction of the first body 100. On the one hand, this allows the limiting protrusion to more easily pass over the first protrusion 313 when the first body 100 rotates from the unlocking position along the second rotation direction, enabling the first abutment surface 121 to engage with the second abutment surface 311. On the other hand, it provides resistance to the movement of the limiting protrusion in the first rotation direction, preventing the first body 100 from rotating excessively upwards.

[0063] Additionally, refer to Figure 5 and Figure 9In this invention, one of the first body 100 and the second body 200 has a first limiting wall 130 and a second limiting wall 140 disposed opposite to each other, and the other has a limiting rib 210. The limiting rib 210 is located between the first limiting wall 130 and the second limiting wall 140. When the first body 100 rotates relative to the second body 200, the limiting rib 210 moves between the first limiting wall 130 and the second limiting wall 140. The first limiting wall 130 and the second limiting wall 140 limit the rotation range of the limiting rib 210. Specifically, when the rotary adjustment mechanism is in the initial position, the limiting rib 210 abuts against the first limiting wall 130, which restricts the rotation of the limiting rib 210 along the second rotation direction, so that the first body 100 can only rotate upwards along the first rotation direction. When the rotary adjustment mechanism rotates from the initial position to the unlock position along the first rotation direction, the limiting rib 210 gradually approaches the second limiting wall 140. When the rotary adjustment mechanism switches to the unlock position, the limiting rib 210 abuts against the second limiting wall 140, which restricts the rotation of the limiting rib 210 along the first rotation direction, so that the first body 100 can only rotate downwards along the second rotation direction. By limiting the rotation range of the limiting rib 210 through the first limiting wall 130 and the second limiting wall 140, the first body 100 can rotate within a preset range and can accurately switch to the initial and unlock positions, making the gear switching of the rotary adjustment mechanism more stable.

[0064] In another embodiment, reference Figure 12 The first protrusion 313 and the second protrusion 314 define a limiting channel 315. The first limiting part 122 is configured as a limiting protrusion, which can be inserted into the limiting channel 315 and move within it. The rotary adjustment mechanism also has a highest setting located after the unlocking position. During the process of switching the rotary adjustment mechanism from the unlocking position to the highest setting, the first body 100 rotates relative to the second body 200 around a first rotation direction and gradually switches to the highest setting.

[0065] Specifically, when the rotary adjustment mechanism is in the unlocked position, the limiting protrusion is inserted into the limiting channel 315. As the first body 100 continues to rotate along the first rotation direction, the limiting protrusion moves within the limiting channel 315. When the first body 100 rotates to the highest position, the limiting protrusion moves to the limit position of the limiting channel 315 and abuts against the first protrusion 313 or the second protrusion 314, thus limiting the limiting protrusion and indicating that the rotary adjustment mechanism has switched to the highest position. When the rotary adjustment mechanism switches from the highest position to the initial position, the first body 100 rotates relative to the second body 200 along the second rotation direction. The first protrusion 313 or the second protrusion 314 releases the limiting protrusion, and the limiting protrusion moves in the opposite direction within the limiting channel 315 and returns to the unlocked position. The return process from the unlocked position to the initial position can be described with reference to the operation description of other embodiments.

[0066] Furthermore, when the rotary adjustment mechanism is in its highest position, a portion of the structure of the first main body 100 and a portion of the structure of the second main body 200 abut against each other, forming a limit. In this case, the first main body 100 and the second main body 200 can achieve the limit using their own structures, without the need for additional limit structures, which helps to simplify the structural composition of the rotary adjustment mechanism.

[0067] In this invention, when the rotary adjustment mechanism is in the initial position and the working position, part of the locking structure 400 is located within the receiving cavity 110, and in this state, the rotation of the first body 100 along the second rotation direction is restricted. In one embodiment, referring to... Figure 5 and Figure 10 The first body 100 includes a first locking tooth 150 located within the receiving cavity 110, the first locking tooth 150 having a first limiting surface 151, as shown in the figure. Figure 7 The locking structure 400 has a second locking tooth 420, which has a second limiting surface 421. The first limiting surface 151 abuts against the second limiting surface 421 and is parallel to the moving direction of the locking structure 400. The second limiting surface 421 provides a force to the first limiting surface 151 in the first rotation direction. Therefore, when part of the locking structure 400 is located inside the receiving cavity 110, the first limiting surface 151 always abuts against the second limiting surface 421. The locking structure 400 restricts the rotation of the first body 100 in the second rotation direction. Thus, when the rotation adjustment mechanism is in the working position, it can provide stable support for the user. When in the initial position, it can be stably maintained in the initial position as long as it is not subjected to external force.

[0068] It should be noted that the rotary adjustment mechanism of the present invention also has several intermediate positions located between the initial position and the working position. When in an intermediate position, part of the locking structure 400 is also located in the receiving cavity 110 and can provide support to the user at different heights, so that the rotary adjustment mechanism has a variety of positions and can meet the different usage needs of the user. Specifically, the first locking tooth 150 has a first pushing surface 152, and the second locking tooth 420 has a second pushing surface 422. The first pushing surface 152 and the second pushing surface 422 are inclined and abut against each other. Since the locking structure 400 only has the degree of freedom to move relative to the second body 200, when the first body 100 rotates relative to the second body 200, the second pushing surface 422 is pushed by the first pushing surface 152, causing the locking structure 400 to move away from the receiving cavity 110. The first pushing surface 152 and the second pushing surface 422 move relative to each other as the first body 100 rotates. When the first pushing surface 152 and the second pushing surface 422 separate, the pushing of the first locking tooth 150 on the locking structure 400 ends.

[0069] Furthermore, during the process of the rotating boss 320 moving from contact with the second groove wall 412 to contact with the first groove wall 411, the rotation angle of the first main body 100 is defined as a1. During the process of the first limiting surface 151 switching from contact with the second limiting surface 421 to separation and re-contact, the rotation angle of the first main body 100 is defined as a2. The relationship between a1 and a2 is set as: a1 = n * a2, where n is a positive integer not less than 2. It can be understood that the process of the rotating boss moving from contact with the second groove wall 412 to contact with the first groove wall 411 is the process of the rotating adjustment mechanism switching from its initial position to its working position. The process of the first limiting surface 151 switching from contact with the second limiting surface 421 to separation and re-contact is the process of the locking structure 400 gradually exiting the receiving cavity 110 from its deepest position and re-entering the receiving cavity 110.

[0070] By defining the angular relationship between a1 and a2, the locking structure 400 can undergo several processes of exiting and re-inserting from the receiving cavity 110 during the switching process between the initial and working positions of the rotary adjustment mechanism. Each time the locking structure 400 re-inserts into the receiving cavity 110, the rotary adjustment mechanism switches to the intermediate position. It is understandable that each time the locking structure 400 inserts into the receiving cavity 110, the first limiting surface 151 and the second limiting surface 421 have the largest contact area. Each time the locking structure 400 exits from the receiving cavity 110, the rotation of the first main body 100 causes the first pushing surface 152 to push the second pushing surface 422, moving the locking structure 400 away from the receiving cavity 110. Furthermore, the contact area between the first limiting surface 151 and the second limiting surface 421 gradually decreases until they are completely disengaged.

[0071] It should be noted that the first body 100 has a plurality of first locking teeth 150, which are arranged in multiple ways along the rotation direction of the first body 100 and are distributed at intervals. A moving gap is defined between adjacent first locking teeth 150, which allows second locking teeth 420 to be inserted. When the rotation adjustment mechanism switches from the initial position to the working position, the second locking teeth 420 can move within the moving gap to enter and exit the moving gap. The locking structure 400 has a plurality of second locking teeth 420, which are arranged in multiple ways along the rotation direction of the first body 100 and are distributed at intervals. A moving gap is defined between adjacent second locking teeth 420, which allows first locking teeth 150 to be inserted. When the rotation adjustment mechanism switches from the initial position to the working position, the first locking teeth 150 can move within the moving gap to enter and exit the moving gap.

[0072] Understandably, the first pushing surface 152 and the first limiting surface 151 are located on opposite sides of the first locking tooth 150, and the second pushing surface 422 and the second limiting surface 421 are located on opposite sides of the second locking tooth 420. When the first locking tooth 150 and the second locking tooth 420 abut against each other, the first pushing surface 152 contacts the second pushing surface 422, and the first limiting surface 151 contacts the second limiting surface 421. As the first body 100 rotates relative to the second body 200 along the first rotation direction, the first pushing surface 152 and the second pushing surface 422 move relative to each other, and the first limiting surface 151 and the second limiting surface 421 move relative to each other. The second locking tooth 420 moves under the push of the first locking tooth 150 and exits from between adjacent first locking teeth 150, thus moving away from the receiving cavity 110. At the same time, the first limiting surface 152... As the contact area between the first locking tooth 150 and the second limiting surface 421 gradually decreases, when the second locking tooth 420 exits from the first locking tooth 150, the first limiting surface 151 disengages from the second limiting surface 421, the second locking tooth 420 exits the receiving cavity 110, and the rotation of the first body 100 along the second rotation direction is no longer restricted by the locking structure 400; as the first body 100 continues to rotate relative to the second body 200 along the first rotation direction, the second locking tooth 420 is inserted again between the adjacent first locking teeth 150, and then the first limiting surface 151 abuts against the second limiting surface 421, the first pushing surface 152 abuts against the second pushing surface 422, the first limiting surface 151 abuts against the second limiting surface 421, the second locking tooth 420 is inserted into the receiving cavity 110, and the rotation of the first body 100 along the second rotation direction is restricted by the locking structure 400. Thus, during the process of switching the rotary adjustment mechanism from the initial gear to the intermediate gear, from the previous intermediate gear to the next intermediate gear, and from the intermediate gear to the working gear, the first body 100 rotates relative to the second body 200 along the first rotation direction. The first locking tooth 150 and the second locking tooth 420 switch from a state of mutual contact to a state of mutual disengagement and then mutual contact again. That is, the second locking tooth 420 passes through the first locking tooth 150 from the moving gap defined by the previous adjacent first locking tooth 150 and enters the next moving gap defined by the adjacent first locking tooth 150.

[0073] It should be noted that during the switching process of the rotary adjustment mechanism from the initial position to the working position, the rotating boss 320 is not limited by the first groove wall 411 or the second groove wall 412, and the unlocking structure 300 only rotates in the first rotation direction. To ensure that the rotating boss 320 is always located within the rotating groove 410, and that during the switching process of the rotary adjustment mechanism from the working position to the unlocking position, the first main body 100 can push the unlocking structure 300 to move, thereby causing the locking structure 400 to disengage from the receiving cavity 110, the present invention provides that the locking structure 400 is moved by the push of the first locking tooth 150. The distance is less than the length of the rotating boss 320 along the moving direction of the locking structure 400. Therefore, during the process of the rotating adjustment mechanism switching from the initial position to the intermediate position, switching from the previous intermediate position to the next intermediate position, and switching from the intermediate position to the working position, the movement of the second locking tooth 420 away from the receiving cavity 110 by the push of the first locking tooth 150 is always less than the length of the rotating boss 320. This ensures that the rotating boss 320 is always located in the rotating groove 410 during the movement of the locking structure 400 and can be limited by the first groove wall 411 and the second groove wall 412.

[0074] Additionally, in one embodiment, reference is made to Figure 7 and Figure 11 The second body 200 has a sliding channel 220 inside, and the locking structure 400 has a movable body 430. The movable body 430 is slidably connected in the sliding channel 220 and mutually limits each other in the rotation direction of the first body 100, so that the locking structure 400 only has the degree of freedom to move relative to the first body 100. Understandably, the second main body 200 should have a groove 230 inside to guide the movement of the second locking tooth 420, and the second locking tooth 420 is slidably connected in the groove 230; the moving body 430 is connected to the end of the second locking tooth 420 facing away from the first main body 100, one of the grooves 230 is connected to the sliding channel 220, the length of the sliding channel 220 is set to be greater than the length of the groove 230, or the sliding channel 220 is provided with an installation mark to indicate the installation position of the moving body 430. Setting the moving body 430 can realize the foolproof installation of the locking structure 400 and the second main body 200, and ensure the correct cooperation between the locking structure 400 and the unlocking structure 300 and between the locking structure 400 and the first main body 100.

[0075] In this invention, reference is made to Figures 4 to 6The unlocking structure 300 also includes a base 330, a second tooth 310 and a rotating boss 320 respectively connected to opposite sides of the base 330, a first tooth 120 and a locking structure 400 respectively connected to opposite sides of the base 330, the base 330 can abut against the locking structure 400, when the first tooth 120 pushes the second tooth 310 to move, the base 330 can push the locking structure 400 to move; the length of the unlocking structure 300 in the radial direction of the first body 100 is less than the length of the locking structure 400 in the radial direction of the first body 100, and the first tooth 120 and the first locking tooth 150 are offset in the moving direction of the locking structure 400 so that the first body 100 can cooperate with the unlocking structure 300 and the locking structure 400 at the same time. In addition, the first body 100 and the second body 200 are interlocked to form a closed active space. The unlocking structure 300, the locking structure 400 and the elastic element 500 are all housed in this active space. When the first body 100 rotates relative to the second body 200, it performs corresponding movements in the active space to switch the gear of the rotation adjustment mechanism.

[0076] The present invention also provides a seat, which includes the aforementioned rotation adjustment mechanism, a seat body, and functional components. A second main body 200 is connected to the seat body, and the first main body 100 can be part of the seat body or other components mounted on the seat body. The functional components are integrally connected to the first main body 100 and can be components with rotation adjustment requirements, such as footrests, armrests, headrests, and backrests. By providing a rotation adjustment mechanism within the seat, the convenience of rotating and adjusting the corresponding functional components within the seat can be improved, facilitating the switching between different settings.

[0077] 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, and various changes can be made within the scope of knowledge possessed by those skilled in the art 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 rotary adjustment mechanism, characterized in that, include: The first body has an internal receiving cavity, and the first body includes a first tooth, which is located inside the receiving cavity; The second body is rotatably connected to the first body; The unlocking structure has a second tooth and a rotating boss. The second tooth abuts against the first tooth. The first tooth can follow the rotation of the first body to drive the second tooth to rotate the rotating boss and move the unlocking structure. A locking structure is slidably connected to the second body and can be driven to move relative to the second body to enter and exit the receiving cavity. The locking structure has a rotating groove, at least a portion of the rotating boss is inserted into the rotating groove and can move within the rotating groove. The rotating groove is provided with opposing first groove walls and second groove walls. An elastic element is connected to the locking structure and is capable of applying an elastic force to the locking structure to move toward the receiving cavity; The rotary adjustment mechanism has an initial position, a working position, and an unlocking position. The rotary adjustment mechanism is configured such that: when switching from the initial position to the working position, the first body rotates relative to the second body around a first rotation direction, causing the rotating boss to move to abut against the first groove wall of the rotating groove; a portion of the locking structure is accommodated in the receiving cavity and abuts against the inner wall of the receiving cavity in the opposite direction of the rotation direction of the first body; when switching from the working position to the unlocking position, while the first body rotates relative to the second body around the first rotation direction, the first tooth drives the unlocking structure to push the locking structure to move, causing the locking structure to exit the receiving cavity; when switching from the unlocking position to the initial position, the first body rotates relative to the second body around a second rotation direction, causing the rotating boss to rotate to abut against the second groove wall of the rotating groove; the locking structure is driven by the elastic element to move towards the receiving cavity, and a portion of the locking structure is inserted into the receiving cavity; the first rotation direction is opposite to the second rotation direction. The first main body includes a first locking tooth located within the receiving cavity, the first locking tooth having a first limiting surface, the locking structure including a second locking tooth, the second locking tooth having a second limiting surface, the first limiting surface and the second limiting surface being parallel to the moving direction of the locking structure, and the second limiting surface providing a force toward the first limiting surface toward the first rotation direction; The first locking tooth has a first pushing surface, and the second locking tooth has a second pushing surface. The first pushing surface and the second pushing surface are inclined and abut against each other. During the process of the rotating boss moving from abutting against the second groove wall to abutting against the first groove wall, the rotation angle of the first body is a1. During the process of the first limiting surface switching from abutting against the second limiting surface to separating from each other and abutting again, the rotation angle of the first body is a2. a1=n a2, where n is a positive integer not less than 2; The rotary adjustment mechanism has several intermediate gears located between the initial gear and the working gear. During the process of switching the rotary adjustment mechanism from the initial gear to the intermediate gear, during the process of switching between adjacent intermediate gears, or during the process of switching from the intermediate gear to the working gear, the first body rotates relative to the second body around the first rotation direction, and the first locking tooth and the second locking tooth switch from a mutually abutting state to a mutually disengaged state and then abutting each other again.

2. The rotary adjustment mechanism according to claim 1, characterized in that, The distance that the locking structure moves under the push of the first locking tooth is less than the length of the rotating boss along the moving direction of the locking structure.

3. The rotary adjustment mechanism according to claim 1, characterized in that, The first tooth has an inclined first abutting surface and a first limiting part facing the second tooth. The second tooth has an inclined second abutting surface and a second limiting part facing the first tooth. When the rotary adjustment mechanism switches from the initial position to the working position, the first abutting surface abuts against the second abutting surface and pushes the rotating boss to move in the rotating groove. When the rotary adjustment mechanism switches from the working position to the unlocking position, the first abutting surface and the second abutting surface abut against each other and move relative to each other until the first limiting part and the second limiting part limit each other in the rotation direction of the first body.

4. The rotary adjustment mechanism according to claim 3, characterized in that, The second limiting part is configured as a limiting groove, and the first limiting part is configured as a limiting protrusion. The limiting protrusion can be inserted into the limiting groove. The second tooth also includes a first protrusion and a second protrusion. The first protrusion and the second protrusion define the limiting groove. The second abutting surface is adjacent to the first protrusion. The second protrusion protrudes toward the first tooth relative to the first protrusion, or the width of the second protrusion along the rotation direction of the first body is greater than the width of the first protrusion along the rotation direction of the first body.

5. The rotary adjustment mechanism according to claim 1, characterized in that, The second tooth further includes a first protrusion and a second protrusion, which define a limiting channel. The first limiting portion is configured as a limiting protrusion, which can be inserted into the limiting channel and move within the limiting channel. The rotary adjustment mechanism also has a highest gear located after the unlocking gear. During the process of switching the rotary adjustment mechanism from the unlocking gear to the highest gear, the first body rotates relative to the second body around the first rotation direction, and the limiting protrusion moves along the limiting channel until the first protrusion or the second protrusion abuts.

6. The rotary adjustment mechanism according to claim 1, characterized in that, One of the first body and the second body has a first limiting wall and a second limiting wall that are disposed opposite to each other, and the other has a limiting part. The limiting part is located between the first limiting wall and the second limiting wall and can move between the first limiting wall and the second limiting wall as the first body rotates. When the rotary adjustment mechanism is in the initial position, the limiting part abuts against the first limiting wall; when the rotary adjustment mechanism is in the unlocking position, the limiting part abuts against the second limiting wall.

7. The rotary adjustment mechanism according to claim 1, characterized in that, The unlocking structure further includes a base, the second tooth and the rotating boss are respectively connected to opposite sides of the base, the first tooth and the locking structure are respectively located on opposite sides of the base, and the base can abut against the locking structure; The first body and the second body interlock to form a closed active space, and the unlocking structure, the locking structure and the elastic element are accommodated within the active space.

8. A seat, characterized in that, include: The rotary adjustment mechanism according to any one of claims 1 to 7; The seat body, the second body being connected to the seat body; Functional components are integrally connected to the first main body.

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