Angle adjustment mechanism and seat
By combining a fixed shaft, rotating parts, locking teeth, and elastic components, the problems of complex rotating connections and limited angles in seat armrests are solved, achieving high integration, stability, and efficient assembly.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANGZHOU BLACK & WHITE TECH CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-06-30
AI Technical Summary
The existing rotating connection structure of seat armrests is complex, occupies a large assembly space, has poor integration, is prone to jamming, and has limited rotation angle.
It adopts a combination structure of fixed shaft core, rotating parts, locking teeth and elastic parts. The rotating parts have a accommodating space, the locking teeth can move radially, the gear position parts have a large arrangement space, the number of parts is small, and the structure is simple.
The integration and stability of the angle adjustment mechanism have been improved, the assembly difficulty has been reduced, the rotation angle of the handrail has been increased, jamming has been avoided, and assembly efficiency has been improved.
Smart Images
Figure CN224420503U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sitting and reclining furniture technology, and in particular to an angle adjustment mechanism and a seat. Background Technology
[0002] In related technologies, to meet users' needs for seat use, the armrests of the seats need to have a rotating function so that users can easily support and relax their arms. However, in related technologies, the rotating connection structure connecting the seat body and the armrest is relatively complex, and the positioning of the armrest is often achieved by the engagement of a fixed pawl and a swing pawl. This requires a large size in terms of assembly space, is complicated to assemble, has poor integration of the rotating connection structure, and is also prone to the problem of the fixed pawl and the swing pawl jamming each other. In addition, due to the size limitations of the fixed pawl and the swing pawl, the rotation angle of the armrest is also limited. Utility Model Content
[0003] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one objective of this utility model is to provide an angle adjustment mechanism with high structural integration, which makes it less prone to jamming between the locking tooth block and the stop component, and allows the rotating component to rotate at a relatively large angle. In addition, the angle adjustment mechanism of this application has fewer parts, a simpler structure, and can reduce assembly difficulty and improve assembly efficiency.
[0004] According to an embodiment of the present invention, the angle adjustment mechanism includes: a fixed shaft core, the fixed shaft core including a shaft body and a stop member arranged on the outer periphery of the shaft body, the stop member having multiple stops, the multiple stops being arranged spaced apart around the axis of the fixed shaft core; a rotating member, the rotating member having a shaft hole and a receiving space, the shaft hole and the receiving space communicating, the rotating member being rotatably mounted on the shaft body through the shaft hole, at least a portion of the stop member being located in the receiving space; a locking tooth block, the locking tooth block being radially movably disposed in the receiving space, the locking tooth block being adapted to abut against the stop to limit the relative rotation between the rotating member and the fixed shaft core; and an elastic member, the elastic member being located in the receiving space and on the side of the locking tooth block opposite to the rotation axis, for keeping the locking tooth block in abutting state against the stop.
[0005] According to the angle adjustment mechanism of this utility model embodiment, by providing a receiving space for the rotating component and allowing the locking tooth block to move radially after being placed in the receiving space, the integration of the angle adjustment mechanism can be improved, the locking tooth block can be protected, and the locking tooth block and the gear component are less likely to jam. In addition, the gear component has a large space for gear arrangement, which allows the rotating component of the angle adjustment mechanism to rotate at a relatively large angle. Furthermore, the angle adjustment mechanism of this application has fewer parts and a simpler structure, which can reduce assembly difficulty and improve assembly efficiency.
[0006] In addition, the angle adjustment mechanism according to this utility model may also have the following additional technical features:
[0007] In some embodiments of this utility model, the rotating member includes: an inner gasket having a first receiving groove; a toothed block fixing plate, the toothed block fixing plate and the inner gasket being detachably connected axially, the toothed block fixing plate having a second receiving groove, the first receiving groove and the second receiving groove being axially opposite to each other to form the receiving space, the locking toothed block being axially inserted through the first receiving groove and the second receiving groove, the gear shift member being at least partially located in the first receiving groove to abut against the locking toothed block, the second receiving groove having a first guide surface and a second guide surface, the first guide surface and the second guide surface being connected in the rotation direction of the rotating member, wherein the locking toothed block is located at the first guide surface, the elastic member is used to keep the locking toothed block in abutting state with the gear shift, when the rotating member rotates, the second guide surface is adapted to abut against the locking toothed block to push the gear shift member to overcome the elastic force of the elastic member, so that the locking toothed block can move between multiple gear shifts.
[0008] In some embodiments of this utility model, the second guide surface is constructed as a guide slope, and / or the surface of the locking tooth block that abuts against the second guide surface is a guide slope. The guide slope is used to guide the locking tooth block to disengage radially from the stop member when the second guide surface abuts against the locking tooth block.
[0009] In some embodiments of this utility model, the second receiving groove further has a third guide surface. In the rotation direction of the rotating member, the third guide surface is located at the end of the second guide surface away from the first guide surface, and in the radial direction, the distance from each point of the third guide surface to the rotation axis is greater than the distance from each point of the first guide surface to the rotation axis, so that when the locking tooth block moves from the second guide surface to the third guide surface, the locking tooth block is separated from the stop member.
[0010] In some embodiments of this utility model, the first guide surface and / or the third guide surface are arc surfaces curved around the rotation axis.
[0011] In some embodiments of this utility model, the first receiving groove is constructed as a through groove that penetrates the inner gasket along the axial direction, and two toothed block fixing pieces are provided, with the two toothed block fixing pieces respectively installed on both sides of the inner gasket along the axial direction.
[0012] In some embodiments of this utility model, the accommodating space extends through the rotating member along the axial direction, and the angle adjustment mechanism further includes an outer gasket, which is arranged on at least one side of the axial direction of the rotating member to cover the accommodating space.
[0013] In some embodiments of this utility model, the elastic element is constructed as a spring sheet. In the rotation direction of the rotating element, the accommodating space has a first end and a second end. The spring sheet has a fixed end and a free end. The fixed end is installed at the first end, and the free end extends to the second end and abuts against the second end.
[0014] In some embodiments of this utility model, the gear shift member has a plurality of first positioning teeth, each of the first positioning teeth being configured as a gear shift; the locking tooth block has a second positioning tooth that meshes with the first positioning tooth, and a plurality of the second positioning teeth are provided, wherein the tooth tip of the first positioning tooth extends along the first rotation direction of the rotating member.
[0015] This utility model also proposes a seat having the angle adjustment mechanism described in the above embodiments.
[0016] According to an embodiment of the present invention, the seat includes: a seat frame having a slot; an armrest having a mounting groove; an angle adjustment mechanism installed in the mounting groove, wherein a plug-in section of the fixed shaft extends out of the mounting groove and is inserted into the slot, wherein the outer peripheral surface of the plug-in section has at least one rotation-limiting surface.
[0017] According to the present utility model, the seat is equipped with the angle adjustment mechanism described above, which allows the armrests to have a large range of rotation. The angle adjustment mechanism has a simple structure, which can reduce the assembly difficulty of the seat, improve the assembly efficiency, and the armrests are not easy to jam when rotating, thus having good stability.
[0018] 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
[0019] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:
[0020] Figure 1 This is a schematic diagram of the structure of a seat according to an embodiment of the present invention, in which both the left and right armrests are equipped with angle adjustment mechanisms.
[0021] Figure 2 This is a schematic diagram of the structure of the seat according to an embodiment of the present invention, in which an angle adjustment mechanism is assembled in the left armrest and the outer pad is disassembled.
[0022] Figure 3 yes Figure 2 A magnified view of region A in the middle.
[0023] Figure 4 This is an exploded view of the left armrest and angle adjustment mechanism of the seat according to an embodiment of the present utility model.
[0024] Figure 5 This is a structural schematic diagram of the angle adjustment mechanism according to an embodiment of the present utility model.
[0025] Figure 6 This is an exploded view of the angle adjustment mechanism according to an embodiment of the present invention.
[0026] Figure 7 This is a schematic diagram of the structure of the tooth block fixing piece on one side of the angle adjustment mechanism according to an embodiment of the present utility model.
[0027] Figure label:
[0028] 100. Angle adjustment mechanism;
[0029] 1. Fixed shaft core; 11. Shaft body; 111. Insertion section; 1111. Rotation limiting surface; 12. Stop component; 121. First positioning tooth; 122. First stop part; 123. Second stop part;
[0030] 2. Rotating component; 20. Accommodating space; 21. Inner gasket; 211. First accommodating groove; 22. Tooth block fixing piece; 221. Second accommodating groove; 2211. First guide surface; 2212. Second guide surface; 2213. Third guide surface;
[0031] 3. Locking tooth block; 31. Second positioning tooth;
[0032] 4. Elastic element; 41. Fixed end; 42. Free end;
[0033] 5. Outer gasket;
[0034] 200. Handrail; 6. Mounting slot; 71. Screw; 72. Nut; 8. Rivet. Detailed Implementation
[0035] 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.
[0036] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0038] The following is for reference. Figures 1-7 Describes the angle adjustment mechanism 100 according to an embodiment of the present utility model.
[0039] like Figures 1-7As shown, the angle adjustment mechanism 100 according to an embodiment of the present invention includes a fixed shaft core 1, a rotating member 2, a locking tooth block 3, and an elastic member 4. The fixed shaft core 1 includes a shaft body 11 and a stop member 12 arranged on the outer periphery of the shaft body 11. The stop member 12 has multiple stops, which are spaced apart around the axis of the fixed shaft core 1. The rotating member 2 has a shaft hole and a receiving space 20, which are connected. The rotating member 2 is rotatably mounted on the shaft body 11 through the shaft hole. At least a portion of the stop member 12 is located in the receiving space 20. The locking tooth block 3 is radially movably disposed in the receiving space 20. The locking tooth block 3 is adapted to abut against the stop to limit the relative rotation between the rotating member 2 and the fixed shaft core 1. The elastic member 4 is located in the receiving space 20 and on the side of the locking tooth block 3 away from the rotation axis, for keeping the locking tooth block 3 in abutting state with the stop.
[0040] For the purpose of describing the angle adjustment mechanism 100 described above, this application uses the application of the angle adjustment mechanism 100 on a seat as an example, but this should not be construed as a limitation of this application. For example, the angle adjustment mechanism 100 of this application can also be used to rotatably connect two other components that need to rotate relative to each other, so that one component can have multiple lockable rotation stop positions during rotation relative to the other component. Each rotation stop position is the position where the locking tooth block 3 is stopped by the corresponding gear.
[0041] In the above embodiments of this application, the angle adjustment mechanism 100 is applied to a seat, which includes a seat frame, an armrest 200 and the angle adjustment mechanism 100, which is connected between the seat frame and the armrest 200.
[0042] Specifically, the fixed shaft core 1 includes a shaft body 11 and a stop member 12. The shaft body 11 includes a plug-in section 111 and a mounting section in the axial direction. The stop member 12 is connected to the outer periphery of the mounting section. The fixed shaft core 1 can be plugged into the slot of the seat frame by plug-in method, thereby fixing the fixed shaft core 1 to the seat frame. For example, a limited rotation surface 1111 can be provided on the outer periphery of the plug-in section 111, or a limited rotation surface 1111 can also be provided on the inner wall of the slot, thereby restricting the rotation of the fixed shaft core 1. Thus, the rotating member 2 is sleeved on the fixed shaft core 1, and the rotating member 2 can rotate.
[0043] Furthermore, the rotating component 2 can be fixedly connected to the handrail 200. The user can apply rotational force to the handrail 200, which can drive the rotating component 2, causing the rotating component 2 to rotate relative to the fixed shaft 1. During the rotation of the rotating component 2, since the locking tooth block 3 is arranged within the receiving space 20 of the rotating component 2, the inner wall of the receiving space 20 can transmit rotational force to the locking tooth block 3. This allows the locking tooth block 3 to overcome the elastic force of the elastic component 4 and move radially away from the gear shift component 12, thereby engaging with the gear shift component. When the 12 gears are separated, the locking tooth block 3 can follow the rotation of the rotating part 2 and make a circular motion around the axis of the fixed shaft core 1. When the user stops applying rotational force to the armrest 200, the elastic part 4 returns to its deformation and can press the locking tooth block 3 against the fixed shaft core 1 again, so that the locking tooth block 3 abuts against the gear at the corresponding position, thereby allowing the armrest 200 to remain at the angle after rotation. At this time, the user can place his arm on the armrest 200, and the armrest 200 can provide good support for the arm.
[0044] During the process of the handrail 200 driving the rotating component 2 to rotate, since the rotating component 2 has a receiving space 20, after the locking tooth block 3 is arranged in the receiving space 20, its position is not fixed, but can move radially within the receiving space 20, so that the relative distance between the locking tooth block 3 and the stop component 12 is adjustable, making it less likely for the locking tooth block 3 and the stop component 12 to jam, thereby improving the stability of the angle adjustment mechanism 100 when the handrail 200 is adjusted.
[0045] Furthermore, the locking tooth block 3 is arranged within the receiving space 20 of the rotating member 2, which not only prevents the locking tooth block 3 from jamming with the gear member 12, but also, compared to the fixed pawl and swing pawl structures in related technologies, the locking tooth block 3 of this application does not swing, thus eliminating the need for additional dimensions. Moreover, the receiving space 20 within the rotating member 2 further enhances the integration of the angle adjustment mechanism 100 of this application. In addition, the rotating member 2 can also better protect the locking tooth block 3, reducing damage to the locking tooth block 3. Furthermore, since the locking tooth block 3 is arranged within the receiving space 20, external particulate impurities are less likely to enter between the locking tooth block 3 and the gear member 12, thus preventing jamming and wear between the locking tooth block 3 and the gear member 12. This also ensures better locking between the locking tooth block 3 and the gear member 12, resulting in high reliability and good stability.
[0046] Furthermore, compared to the fixed pawl and swing pawl structures in related technologies, the gear position arrangement space on the gear position member 12 of this application is larger. That is, the outer peripheral wall of the gear position member 12 can be arranged with gear positions, thereby allowing the rotating member 2 of the angle adjustment mechanism 100 to rotate at a relatively large angle without being limited by the size of the fixed pawl and swing pawl. When applied to a seat, this allows the armrest 200 to have a larger adjustment angle.
[0047] Finally, it should be noted that the angle adjustment mechanism 100 of this application has fewer parts and a simpler structure, which can reduce assembly difficulty and improve assembly efficiency. Furthermore, the locking tooth block 3 does not require the use of pins, torsion springs, or other structures for assembly; it can simply be placed in the accommodating space 20. This makes disassembly and assembly simple, and even if the locking tooth block 3 is damaged, it can be easily replaced. This simplifies the maintenance difficulty of the angle adjustment mechanism 100 and improves maintenance efficiency.
[0048] Therefore, according to the angle adjustment mechanism 100 of this utility model embodiment, by enabling the rotating member 2 to have a receiving space 20, and the locking tooth block 3 to be placed in the receiving space 20 and still be movable in the radial direction, not only can the integration of the angle adjustment mechanism 100 be improved, but the locking tooth block 3 can also be protected, and the locking tooth block 3 and the gear member 12 are not easily jammed. Moreover, the gear arrangement space on the gear member 12 is large, which allows the rotating member 2 of the angle adjustment mechanism 100 to rotate at a relatively large angle. In addition, the angle adjustment mechanism 100 of this application has fewer parts and a simpler structure, which can reduce assembly difficulty and improve assembly efficiency.
[0049] In some embodiments of this utility model, such as Figures 5-7 As shown, the rotating component 2 includes an inner washer 21 and a toothed block fixing plate 22. The inner washer 21 has a first receiving groove 211. The toothed block fixing plate 22 and the inner washer 21 are detachably connected along the axial direction. The toothed block fixing plate 22 has a second receiving groove 221. The first receiving groove 211 and the second receiving groove 221 are axially opposite to each other to form a receiving space 20. The locking toothed block 3 passes through the first receiving groove 211 and the second receiving groove 221 along the axial direction. The stop member 12 is at least partially located in the first receiving groove 211 to abut against the locking toothed block 3. The second receiving groove 221 has a first guide surface 2211 and a second guide surface 2212. The first guide surface 2211 and the second guide surface 2212 are connected in the rotation direction of the rotating member 2. The locking tooth block 3 is located at the first guide surface 2211. The elastic member 4 is used to keep the locking tooth block 3 in a stop state with the gear position. When the rotating member 2 rotates, the second guide surface 2212 is adapted to stop with the locking tooth block 3 to push the gear member 12 to overcome the elastic force of the elastic member 4 so that the locking tooth block 3 can move between multiple gear positions.
[0050] In other words, the first receiving groove 211 provided by the inner gasket 21 is intended to provide space for the locking tooth block 3 and the gear position member 12 to cooperate with each other, and also to provide space for the elastic member 4 to be assembled. The second receiving groove 221 provided by the tooth block fixing plate 22 is to provide rotational force to the locking tooth block 3 by the side wall of the second receiving groove 221 during the rotation of the rotating member 2. This allows the locking tooth block 3 to deform the elastic member 4 better when it is driven to rotate. When the rotating member 2 stops being driven, the elastic member 4 can deform better, thereby pressing the locking tooth block 3 against the gear position member 12.
[0051] For example, the second receiving groove 221 extends circumferentially along the rotating member 2, and the size of the first guide surface 2211 is larger than the size of the locking tooth block 3 in the circumferential direction of the rotating member 2. Thus, when the locking tooth block 3 is positioned corresponding to the first guide surface 2211, the rotating member 2 will not drive the locking tooth block 3 when it rotates to a certain extent. That is, the relative locking position between the locking tooth block 3 and the gear member 12 will not change. The advantage of this is that when the user uses the armrest 200, he / she may turn the armrest 200 clockwise or counterclockwise, but not actually to adjust the angle of the armrest 200. Thus, by making the size of the first guide surface 2211 larger than the size of the locking tooth block 3 in the circumferential direction of the rotating member 2, the user can be provided with room to move the armrest 200 clockwise or counterclockwise.
[0052] Furthermore, when the user needs to lift the armrest 200 upwards, the user can drive the armrest 200 to rotate, thereby causing the rotating component 2 to rotate. When the rotating component 2 rotates, the second guide surface 2212 of the rotating component 2 can gradually approach the locking tooth block 3, and after abutting against the locking tooth block 3, it can apply rotational force to the locking tooth block 3, thereby driving the locking tooth block 3 to move radially outward, so as to better switch between multiple positions of the gear position component 12. Finally, after the user stops driving the armrest 200, the elastic component 4 can press the locking tooth block 3 against the gear position component 12, realizing the mutual locking between the locking tooth block 3 and the gear position component 12, so that the armrest 200 can stay at the corresponding angle.
[0053] In addition, when the locking block 3 switches between multiple gears, the locking block 3 can move radially outward without separating from the gear position member 12. The locking block 3 can abut against the wall of each gear position and move outward along the wall, thereby providing stability for the relative movement between the locking block 3 and the gear position member 12.
[0054] In some embodiments of this utility model, such as Figures 5-7As shown, the second guide surface 2212 is constructed as a guide slope, and / or the surface of the locking tooth block 3 that abuts against the second guide surface 2212 is a guide slope. The guide slope is used to guide the locking tooth block 3 to disengage radially from the stop member 12 when the second guide surface 2212 abuts against the locking tooth block 3.
[0055] For example, the second guide surface 2212 is constructed as a guide ramp.
[0056] For example, the surface where the locking tooth block 3 abuts against the second guide surface 2212 is a guide slope.
[0057] For example, the second guide surface 2212 is constructed as a guide slope, and the surface on which the locking tooth block 3 abuts against the second guide surface 2212 is also a guide slope.
[0058] In the above example, by constructing the guide slope, the second guide surface 2212 can decompose the rotational force applied to the locking tooth block 3 into forces in two directions. One direction of the force is the force that drives the locking tooth block 3 to rotate, and the other direction of the force is the force that drives the locking tooth block 3 to move radially outward. This allows the locking tooth block 3 to switch better between multiple gears, while also reducing mutual damage between the locking tooth block 3 and the gear shifting component 12, improving the service life between the locking tooth block 3 and the gear shifting component 12, and thus enabling the angle adjustment mechanism 100 of this utility model to have better reliability and stability.
[0059] In some embodiments of this utility model, such as Figures 5-7 As shown, the second receiving groove 221 also has a third guide surface 2213. In the rotation direction of the rotating member 2, the third guide surface 2213 is located at the end of the second guide surface 2212 away from the first guide surface 2211. In the radial direction, the distance from each point of the third guide surface 2213 to the rotation axis is greater than the distance from each point of the first guide surface 2211 to the rotation axis, so that when the locking tooth block 3 moves from the second guide surface 2212 to the third guide surface 2213, the locking tooth block 3 is separated from the stop member 12.
[0060] In other words, in the circumferential direction of the rotating member 2, the gear shift member 12 also has a first stop 122 and a second stop 123. Multiple gears are arranged between the first stop 122 and the second stop 123. When the armrest 200 is lifted clockwise, the locking tooth block 3 can rotate clockwise to the end of the gear shift member 12 in one direction. For example, the locking tooth block 3 abuts against the first stop 122, and the locking tooth block 3 cannot continue to rotate relative to the gear shift member 12. At this time, as the rotating member 2 continues to rotate, the third guide surface 2213... The locking tooth block 3 can be gradually approached, and in the radial direction, the third guide surface 2213 can gradually move between the locking tooth block 3 and the gear position member 12, thereby enabling the locking tooth block 3 to separate from the gear position. At this time, the rotating member 2 can rotate counterclockwise relative to the fixed shaft core 1, so that the handrail 200 can rotate counterclockwise and fall back down. Thus, the locking tooth block 3 can rotate counterclockwise to the end of another direction among the multiple gear positions of the gear position member 12. At this time, the driving of the handrail 200 is stopped, and the handrail 200 can fall back to the initial position.
[0061] In addition, regarding the above example, it should be noted that in one example, the size of the third guide surface 2213 in the radial direction of the rotating member 2 can be greater than or equal to the size of the locking tooth block 3. Thus, the locking tooth block 3 can be fully inserted into the third guide surface 2213. When the armrest 200 falls back to the initial position, the locking tooth block 3 can still be on the third guide surface 2213. Under the restriction of the second stop 123, the locking tooth block 3 cannot continue to rotate relative to the gear position member 12. Therefore, the elastic member 4 cannot recover its elastic deformation, and naturally cannot press the locking tooth block 3 from the third guide surface 2213 back to the gear position. However, when the armrest 200 is driven to lift up clockwise again, the space defined by the third guide surface 2213 and the second stop 123 is unlocked. When the rotating member 2 rotates, the elastic member 4 can recover its elastic deformation and press the locking tooth block 3 back from the third guide surface 2213 back to the gear position, thereby enabling the locking tooth block 3 to abut against the gear position and lock the position of the armrest 200.
[0062] In another example, the size of the third guide surface 2213 in the radial direction of the rotating member 2 can be smaller than the size of the locking tooth block 3. Thus, the locking tooth block 3 only partially enters the third guide surface 2213. The third guide surface 2213 allows one end of the locking tooth block 3 to completely disengage from the gear position member 12, which allows the locking tooth block 3 to be in a semi-unlocked state with the gear position. This facilitates the user to drive the armrest 200 to rotate, causing the armrest 200 to fall back to the initial position. When the armrest 200 falls back to the initial position, the locking tooth block 3 is only partially on the third guide surface 2213, and under the restriction of the second stop part 123, the locking tooth block 3 cannot continue to rotate relative to the gear position member 12. Therefore, when the elastic member 4 recovers its elastic deformation, it can press the locking tooth block 3 back from the third guide surface 2213 to the gear position, thereby causing the rotating member 2 to rotate relative to it. The locking tooth block 3 and the gear position can then re-engage, thus locking the position of the armrest 200.
[0063] In some embodiments of this utility model, such as Figures 5-7 As shown, the first guide surface 2211 and / or the third guide surface 2213 are curved surfaces that are bent around the axis of rotation.
[0064] For example, the first guide surface 2211 is an arc surface that is curved around the axis of rotation.
[0065] For example, the third guide surface 2213 is an arc surface that is curved around the axis of rotation.
[0066] For example, both the first guide surface 2211 and the third guide surface 2213 are curved surfaces that are bent around the axis of rotation.
[0067] In the above example, by making the first guide surface 2211 a curved surface that bends around the rotation axis, the rotating member 2 can rotate better relative to the locking tooth block 3 when the locking tooth block 3 is on the first guide surface 2211. By making the third guide surface 2213 a curved surface that bends around the rotation axis, the rotating member 2 can drive the locking tooth block 3 to rotate relative to the fixed shaft core 1 better.
[0068] In some embodiments of this utility model, such as Figures 1-7 As shown, the first receiving groove 211 is constructed as a through groove that passes through the inner gasket 21 along the axial direction. Two toothed block fixing pieces 22 are provided, and the two toothed block fixing pieces 22 are respectively installed on both sides of the inner gasket 21 along the axial direction.
[0069] In other words, the locking tooth block 3 can be inserted into the first receiving groove 211 in an axial manner, which is simple and convenient to assemble. In addition, after the locking tooth block 3 is inserted into the first receiving groove 211, the two ends of the locking tooth block 3 in the axial direction respectively extend into the second receiving grooves 221 of the two tooth block fixing pieces 22. During the rotation of the rotating member 2, the second guide surfaces 2212 of the two second receiving grooves 221 can simultaneously apply rotational force to the locking tooth block 3, which can make the locking tooth block 3 move relatively stably relative to the gear member 12.
[0070] In some embodiments of this utility model, such as Figures 1-7 As shown, the accommodating space 20 extends through the rotating member 2 along the axial direction. The angle adjustment mechanism 100 also includes an outer gasket 5, which is arranged on at least one side of the axial direction of the rotating member 2 to cover the accommodating space 20.
[0071] In other words, the second receiving groove 221 is also a through groove that passes through the tooth block fixing piece 22 axially. This further simplifies the assembly of the locking tooth block 3 during assembly. Simultaneously, allowing the locking tooth block 3 to be inserted axially into the receiving space 20 also simplifies its disassembly, thereby reducing the difficulty and efficiency of assembly and disassembly. By arranging the outer gasket 5 to cover the receiving space 20, the locking tooth block 3 can be well protected, and it can also prevent the locking tooth block 3 from falling out of the receiving space 20.
[0072] For example, an outer gasket 5 can be provided, the handrail 200 has a mounting groove 6, the angle adjustment mechanism 100 can be installed in the mounting groove 6, the insertion section 111 of the fixed shaft core 1 extends out of the mounting groove 6, and the outer gasket 5 is located on the side of the rotating member 2 away from the bottom wall of the mounting groove 6. Thus, the end of the receiving space 20 near the bottom wall of the mounting groove 6 is sealed by the bottom wall of the mounting groove 6, and the end of the receiving space 20 away from the bottom wall is sealed by the outer gasket 5.
[0073] For example, two outer gaskets 5 can be provided, that is, the axial ends of the receiving space 20 are respectively covered by two outer gaskets 5.
[0074] In some embodiments of this utility model, such as Figures 5-7 As shown, the elastic element 4 is constructed as a spring sheet. In the rotation direction of the rotating element 2, the receiving space 20 has a first end and a second end. The spring sheet has a fixed end 41 and a free end 42. The fixed end 41 is installed at the first end, and the free end 42 extends to the second end and abuts against the second end.
[0075] In other words, the relative positions of both ends of the spring are fixed. During the rotation of the rotating part 2, the locking tooth block 3 can abut against the middle area of the spring well, causing the middle area of the spring to deform. The spring has a large deformation space and good stability. Moreover, the spring is arranged in the accommodating space 20 along the circumference of the rotating part 2, which can reduce the occupation of the radial space of the rotating part 2 and is conducive to the integrated setting of the angle adjustment mechanism 100.
[0076] In some embodiments of this utility model, such as Figures 5-7 As shown, the gear shift member 12 has a plurality of first positioning teeth 121, each of which is configured as a gear shift; the locking tooth block 3 has a second positioning tooth 31 that meshes with the first positioning tooth 121, and a plurality of second positioning teeth 31 are provided, wherein the tooth tip of the first positioning tooth 121 extends along the first rotation direction of the rotating member 2.
[0077] In other words, during the rotation of the armrest 200, each time the locking tooth block 3 advances by one first positioning tooth 121, the armrest 200 enters a gear position and is thus restricted to a raised angle. Moreover, through the cooperation between multiple first positioning teeth 121 and multiple second positioning teeth 31, the locking tooth block 3 can achieve good stability when it cooperates with the gear position member 12.
[0078] In addition, the tip of the first positioning tooth 121 extends along the first rotation direction of the rotating member 2, combined with Figure 2 and Figure 3 As can be seen, the armrest 200 can be lifted upwards counterclockwise, and the first rotation direction can be counterclockwise. The tip of the first positioning tooth 121 is inclined in the counterclockwise direction. In this way, when the armrest 200 is rotated upwards at a certain angle, the locking tooth block 3 can cooperate well with the first positioning tooth 121. According to its tooth shape, the first positioning tooth 121 can also support the locking tooth block 3 well, thereby supporting the armrest 200 well, so that the user's arm is placed on the armrest 200 with good stability.
[0079] This utility model also proposes a seat having the angle adjustment mechanism 100 of the above embodiments.
[0080] like Figures 1-4 As shown, the seat according to an embodiment of the present utility model includes a seat frame, an armrest 200 and an angle adjustment mechanism 100. The seat frame has a slot, the armrest 200 has a mounting groove 6, the angle adjustment mechanism 100 is installed in the mounting groove 6, the insertion section 111 of the fixed shaft core 1 extends out of the mounting groove 6 and is inserted into the slot. The outer peripheral surface of the insertion section 111 has at least one rotation limiting surface 1111.
[0081] For example, multiple rotation limiting surfaces 1111 are provided. Through multiple rotation limiting surfaces 1111, the rotation of the fixed shaft core 1 can be better restricted. That is, the handrail 200 and the rotating member 2 can rotate relatively well relative to the fixed shaft core 1.
[0082] For example, in conjunction with a specific example shown in the figure, the inner gasket 21 and the two toothed block fixing pieces 22 can be fixed into a whole by rivets 8 to form a rotating part 2. Then, the locking toothed block 3 can be inserted into the receiving space 20 to form an assembly with the rotating part 2. The assembly can then be placed into the mounting groove 6 of the armrest 200. Then, the outer gasket 5 can be placed on the side of the rotating part 2 away from the bottom of the mounting groove 6, thereby sealing the receiving space 20. The outer gasket 5 can be assembled by screws 71, that is, the nut 72 can be pre-embedded in the mounting groove 6. The screw 71 can pass through the outer gasket 5 and the rotating part 2 in sequence and then be screwed into the nut 72, thereby pre-completing the assembly of the armrest 200 and the angle adjustment mechanism 100. Finally, the insertion section 111 of the fixing shaft core 1 can be inserted into the slot to complete the assembly of the armrest 200 and the seat body.
[0083] According to the embodiment of the present utility model, the seat is provided with the angle adjustment mechanism 100 of the above embodiment, which enables the armrest 200 to have a large rotation range. The angle adjustment mechanism 100 has a simple structure, which can reduce the assembly difficulty of the seat and improve the assembly efficiency. In addition, the armrest 200 is not easy to jam when rotating and has good stability.
[0084] The angle adjustment mechanism 100 and other components and operations of the seat according to the embodiments of the present invention are known to those skilled in the art and will not be described in detail here.
[0085] In the description of this specification, references to terms such as "some embodiments," "optionally," "furthermore," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present 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.
[0086] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.
Claims
1. An angle adjustment mechanism (100), characterized in that, include: A fixed shaft core (1) includes a shaft body (11) and a stop member (12) arranged on the outer periphery of the shaft body (11). The stop member (12) has multiple stops, and the multiple stops are arranged at intervals around the axis of the fixed shaft core (1). A rotating component (2) having a shaft hole and a receiving space (20) communicating with the receiving space (20), the rotating component (2) being rotatably mounted on the shaft body (11) through the shaft hole, and at least a portion of the stop component (12) being located in the receiving space (20); Locking tooth block (3), which is radially movably disposed in the receiving space (20), is adapted to abut against the stop to limit the relative rotation between the rotating member (2) and the fixed shaft (1); An elastic element (4) is located in the receiving space (20) and on the side of the locking tooth block (3) away from the rotation axis, for keeping the locking tooth block (3) in a stop state with the gear position.
2. The angle adjustment mechanism (100) according to claim 1, characterized in that, The rotating component (2) includes: Inner gasket (21), the inner gasket (21) having a first receiving groove (211); A toothed block fixing plate (22) and an inner gasket (21) are detachably connected axially. The toothed block fixing plate (22) has a second receiving groove (221). The first receiving groove (211) and the second receiving groove (221) are axially opposite to each other to form the receiving space (20). The locking toothed block (3) passes through the first receiving groove (211) and the second receiving groove (221) axially. The stop member (12) is at least partially located in the first receiving groove (211) to abut against the locking toothed block (3). The second receiving groove (221) has a first guide surface (2211) and a second guide surface (2212). In the rotation direction of the rotating member (2), the first guide surface (2211) and the second guide surface (2212) are connected. The locking tooth block (3) is located at the first guide surface (2211), and the elastic member (4) is used to keep the locking tooth block (3) in a stop state with the gear position. When the rotating member (2) rotates, the second guide surface (2212) is adapted to stop with the locking tooth block (3) to push the gear member (12) to overcome the elastic force of the elastic member (4) so that the locking tooth block (3) can move between the multiple gear positions.
3. The angle adjustment mechanism (100) according to claim 2, characterized in that, The second guide surface (2212) is constructed as a guide slope, and / or the surface of the locking tooth block (3) that abuts against the second guide surface (2212) is a guide slope. The guide slope is used to guide the locking tooth block (3) to disengage radially from the stop member (12) when the second guide surface (2212) abuts against the locking tooth block (3).
4. The angle adjustment mechanism (100) according to claim 2, characterized in that, The second receiving groove (221) also has a third guide surface (2213). In the rotation direction of the rotating member (2), the third guide surface (2213) is located at the end of the second guide surface (2212) away from the first guide surface (2211). In the radial direction, the distance from each point of the third guide surface (2213) to the rotation axis is greater than the distance from each point of the first guide surface (2211) to the rotation axis, so that when the locking tooth block (3) moves from the second guide surface (2212) to the third guide surface (2213), the locking tooth block (3) is separated from the stop member (12).
5. The angle adjustment mechanism (100) according to claim 4, characterized in that, The first guide surface (2211) and / or the third guide surface (2213) are arc surfaces curved around the axis of rotation.
6. The angle adjustment mechanism (100) according to claim 2, characterized in that, The first receiving groove (211) is constructed as a through groove that passes through the inner gasket (21) along the axial direction. Two toothed block fixing pieces (22) are provided, and the two toothed block fixing pieces (22) are respectively installed on both sides of the inner gasket (21) along the axial direction.
7. The angle adjustment mechanism (100) according to claim 1, characterized in that, The accommodating space (20) extends through the rotating member (2) along the axial direction. The angle adjustment mechanism (100) further includes an outer gasket (5), which is arranged on at least one side of the axial direction of the rotating member (2) to cover the accommodating space (20).
8. The angle adjustment mechanism (100) according to claim 1, characterized in that, The elastic element (4) is constructed as a spring sheet. In the rotation direction of the rotating element (2), the receiving space (20) has a first end and a second end. The spring sheet has a fixed end (41) and a free end (42). The fixed end (41) is installed at the first end, and the free end (42) extends to the second end and abuts against the second end.
9. The angle adjustment mechanism (100) according to claim 1, characterized in that, The gear shift member (12) has a plurality of first positioning teeth (121), each of the first positioning teeth (121) being configured as a gear shift; The locking tooth block (3) has a second positioning tooth (31) that meshes with the first positioning tooth (121). The second positioning tooth (31) is provided in multiple ways, wherein the tip of the first positioning tooth (121) extends along the first rotation direction of the rotating member (2).
10. A type of seat, characterized in that, include: A seat frame having slots; Handrail (200), the handrail (200) having a mounting groove (6); The angle adjustment mechanism (100) according to any one of claims 1-9 is installed in the mounting groove (6), the insertion section (111) of the fixed shaft core (1) extends out of the mounting groove (6), the insertion section (111) is inserted into the slot, wherein the outer peripheral surface of the insertion section (111) has at least one rotation limiting surface (1111).