Angle adjusting mechanism and swing chair

Abstract

The utility model discloses an angle adjusting mechanism and a swing chair, the angle adjusting mechanism comprises a base, a locking part and an adjusting part, and the locking part and the adjusting part are both rotatably connected to the base. The locking part comprises first clamping teeth, the adjusting part comprises second clamping teeth, when the locking part rotates to the releasing position from the locking position, the adjusting part can rotate around the rotating axis relative to the base, and after the connecting position of the second clamping teeth and the first clamping teeth is switched, the locking part rotates to the locking position from the releasing position. The angle of the seat part connected with the adjusting part relative to the base can be changed along with switching of the connecting positions of the second clamping teeth and the first clamping teeth, so that the comfort of the swing chair is improved. When the locking part rotates from the releasing position to the locking position, the relative position of the adjusting part and the base is locked, and further, the angle of the seat part relative to the base is also locked, so that the situation that the seat part suddenly falls off relative to the base under the influence of external factors is effectively avoided, and the safety of the swing chair is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of children's swing chairs, in particular to an angle adjustment mechanism and a swing chair. Background Art

[0002] As modern families increase their demand for children's play equipment, the design of children's swing seats, a classic piece of children's play equipment, continues to evolve and innovate. In recent years, adjustable angles have become a key design trend, aiming to provide a more personalized experience. However, existing children's swing seats are prone to sudden falls after adjusting the angle, posing a safety hazard. With increasing consumer demands for safety and comfort, there is a need for swing seats that offer both adjustable angles and fall protection. Utility Model Content

[0003] The main purpose of the utility model is to provide an angle adjustment mechanism and a swing chair, aiming to solve the technical problem of how to ensure that the angle of the swing chair can be adjusted while preventing the swing chair from falling.

[0004] To achieve the above-mentioned purpose, the present invention proposes an angle adjustment mechanism suitable for a swing chair, wherein the swing chair includes a seat portion and a base, and the angle adjustment mechanism includes:

[0005] a base, adapted to be connected to the base;

[0006] a locking portion, rotatably connected to the base and capable of rotating relative to the base around a first axis to a locking position and a release position, wherein the locking portion includes a first latch tooth;

[0007] an adjusting portion adapted to be connected to the seat portion, the adjusting portion being rotatably connected to the base, the rotation axis of the adjusting portion being parallel to the first axis, and the adjusting portion comprising a second latching tooth;

[0008] an adapter connected to the adjustment portion, wherein one end of the adapter facing away from the adjustment portion is adapted to be connected to the seat portion, the adapter being annular and having a plurality of positioning holes formed along its circumference, each of the positioning holes being adapted to engage with a plurality of positioning posts of the seat portion one by one, and further having a plurality of threaded holes formed along its circumference for threaded connection with the seat portion;

[0009] When the locking portion is in the locking position, the first latch tooth engages with the second latch tooth to lock the relative position of the adjusting portion and the base; when the locking portion is in the releasing position, the first latch tooth is separated from the second latch tooth, and the adjusting portion can be rotated relative to the base around the rotation axis to switch the connection position of the second latch tooth and the first latch tooth.

[0010] In this application, the angle adjustment mechanism is provided with a rotatable adjustment part and a rotatable locking part. By switching the connection position between the first tooth and the second tooth, the rotation angle of the adjustment part relative to the base is changed, thereby changing the inclination angle of the seat part connected to the adjustment part, and realizing the angle adjustment of the swing chair. As the switching of the connection position between the first tooth and the second tooth is completed, the locking part can rotate from the release position to the locking position, so that the first tooth and the second tooth are tightly engaged, thereby locking the inclination angle of the adjustment part relative to the base. Thus, the inclination angle of the seat part connected to the adjustment part relative to the base is also locked accordingly, effectively preventing the sudden drop of the seat part after the angle adjustment.

[0011] In some embodiments, the first tooth includes a plurality of first teeth, and each of the first teeth is distributed around the first axis. When the locking part is in the locking position, at least one of the first teeth is engaged with the second tooth;

[0012] and / or;

[0013] The second tooth includes a plurality of second teeth, and each of the second teeth is distributed around the rotation axis. When the locking part is in the locking position, at least one of the second teeth is engaged with the first tooth.

[0014] In this embodiment, the setting of a plurality of first teeth is beneficial to improving the firmness of the engagement between the first tooth and the second tooth. The setting of a plurality of second teeth is beneficial to increasing the adjustment accuracy and the angle adjustment range of the angle of the adjustment part relative to the base.

[0015] In some embodiments, a driving end is provided at one end of the locking part facing away from the first tooth, and the driving end is configured to be driven to drive the first tooth to rotate around the first axis relative to the base, so as to switch the locking part between the locking position and the release position;

[0016] The angle adjustment structure further includes a protective shell, the protective shell is provided with a mounting hole, and the driving end extends into the mounting hole and is fixedly connected to the protective shell;

[0017] The locking part includes a rotating shaft rotatably connected to the base. One end of the protective shell close to the rotating shaft is provided with a concave part, and both ends of the rotating shaft extend into the concave part along a direction perpendicular to the first axis and extend out of the concave part along a direction parallel to the first axis and are rotatably connected to the base;

[0018] The protective shell is provided with a raised part, the raised part is connected to the periphery of the concave part, and the rotating shaft can be clamped between adjacent raised parts when passing through the concave part.

[0019] In this embodiment, the provision of a protective shell helps extend the driving torque of the drive end, reducing the force required to drive the locking portion to rotate. Furthermore, the protective shell protects the locking portion and the adjustment portion, preventing foreign matter from affecting their movement. Furthermore, the provision of the recessed and raised portions helps improve the rotational stability of the shaft, preventing collision or separation between the shaft and the protective shell due to external forces or vibrations.

[0020] In some embodiments, the angle adjustment mechanism further includes an elastic return member, the elastic return member being connected to the locking portion and the base, respectively, and the elastic return member being configured to generate an elastic force driving the locking portion located in the release position to the locking position;

[0021] The elastic return member is a torsion spring, which includes a first energy storage part, a second energy storage part, a first connecting part, and a second connecting part. The two ends of the first connecting part are respectively connected to the first energy storage part and the second energy storage part. The second connecting part is connected to an end of the first energy storage part away from the first connecting part and / or connected to an end of the second energy storage part away from the first connecting part.

[0022] The locking portion includes a locking block and a rotating shaft passing through the locking block along a first direction, the locking block includes the first latch tooth, the first energy storage portion is sleeved on one end of the rotating shaft, and the second energy storage portion is sleeved on the other end of the rotating shaft, the first connecting portion abuts against the side of the locking block away from the first latch tooth, and the second connecting portion abuts against the base.

[0023] In this embodiment, the provision of the elastic return member is conducive to improving the locking effect of the locking portion on the adjusting portion, and effectively prevents the seat portion connected to the adjusting portion from falling.

[0024] In some embodiments, the first connecting portion includes a first extension rod, a second extension rod, and an intermediate rod, one end of the first extension rod is connected to the first energy storage portion, and the other end is connected to the intermediate rod, one end of the second extension rod is connected to the second energy storage portion, and the other end is connected to an end of the intermediate rod away from the first extension rod, the intermediate rod includes a recessed portion, and the side of the locking block away from the first latching tooth is embedded in the recessed portion;

[0025] The locking portion is configured to rotate from the locking position to the releasing position along a first circumferential direction relative to the base, the first extension rod is bent in the direction of the first circumferential protrusion; and / or the second extension rod is bent in the direction of the first circumferential protrusion.

[0026] In this embodiment, the first extension rod and the second extension rod of the elastic return member are arranged to bend in the direction along the first circumferential protrusion, which is conducive to converting the rebound force generated during the transition of the first extension rod and the second extension rod from the bent state to the straight state into the thrust of the first engaging tooth and the second engaging tooth. The thrust is superimposed on the rebound force generated by the first energy storage part and the second energy storage part, so that the locking effect of the locking part on the adjustment part is better.

[0027] In some embodiments, an end of the adjustment portion facing away from the second tooth portion is provided with a mounting portion and a supporting portion, the mounting portion is configured to be rotatably connected to the base, the supporting portion is located on the side of the mounting portion close to the base, and the supporting portion is configured to be able to abut against the base.

[0028] In this embodiment, the provision of the abutting portion abutting against the base helps prevent the adjusting portion from suddenly rotating toward the base due to external force or vibration after being rotated and locked.

[0029] In some embodiments, the adapter is provided with three positioning holes, each of the positioning holes is provided at one end of the adapter, and at least one threaded hole is provided between each of the positioning holes.

[0030] In this embodiment, the provision of the positioning holes is beneficial to improving the positioning effect of the adjustment portion and the seat portion, while also improving the stability of the connection between the adjustment portion and the seat portion.

[0031] A second aspect of the present invention further provides a swing chair, the swing chair comprising the angle adjustment mechanism described in any one of the above embodiments;

[0032] a base, the upper end of which is connected to the base; and

[0033] The seat portion has a lower end connected to the adjustment portion, and the seat portion can rotate along with the adjustment portion relative to the base around a transverse axis.

[0034] In the present application, a swing chair having an angle adjustment mechanism described in any of the above embodiments can achieve an anti-fall effect while achieving angle adjustment, thereby effectively improving the comfort and safety of the swing chair.

[0035] In some embodiments, the locking portion includes a protective shell, wherein one end of the protective shell close to the rotating shaft is provided with a recess, and both ends of the rotating shaft extend into the recess in a direction perpendicular to the first axis and extend out of the recess in a direction parallel to the first axis and are rotatably connected to the base;

[0036] The base includes a housing having a receiving cavity. The locking portion is located in the receiving cavity and near one end of the seat portion. The protective shell is provided with protruding portions on both sides in the transverse direction and perpendicular to the first axis direction. The protruding portions are located in the receiving cavity. The housing is provided with an avoidance hole, and one end of the protective shell facing away from the seat portion passes through the avoidance hole for rotating relative to the base after obtaining a driving force.

[0037] In this embodiment, the setting of the housing can prevent foreign objects from interfering with the movement of the adjusting portion, the locking portion and other structures, which is beneficial to improving the use experience of the swing chair and enhancing the aesthetics of the swing chair at the same time.

[0038] In some embodiments, the housing includes a main body portion and an expansion portion. The expansion portion protrudes from the main body portion in the transverse direction and perpendicular to the first axis, and the expansion portion is located on the side of the main body portion facing away from the entrance of the seat portion. The avoidance hole is provided at the lower end of the expansion portion.

[0039] In this embodiment, the design that the avoidance hole is located on the side facing away from the entrance of the seat portion can effectively reduce the probability of the locking portion being accidentally touched.

[0040] Compared with the prior art, the beneficial effects of the present utility model are:

[0041] In the technical solution of the present invention, an angle adjustment mechanism is applicable to a swing chair, which includes a seat portion and a base. The angle adjustment mechanism enables the tilt angle of the seat portion relative to the base to be adjusted, thereby improving the comfort of the seat portion. Specifically, the angle adjustment mechanism includes a base, a locking portion, and an adjusting portion. The base is adapted to be connected to the base, and the locking portion and the adjusting portion are both rotatably connected to the base. The locking portion includes a first latch, and the adjusting portion includes a second latch. When the locking portion rotates from a locked position to a released position, the adjusting portion can rotate relative to the base about a rotation axis. When the connection position of the second latch with the first latch is switched, the locking portion rotates from the released position to the locked position. Thus, the connection position of the first latch with the second latch can change with the rotation of the adjusting portion. Furthermore, the seat portion connected to the adjusting portion can change its angle relative to the base with the switching of the connection position of the second latch with the first latch, thereby improving the comfort of the swing chair. When the locking portion is rotated from the release position to the locking position, the first latch engages with the second latch, and the relative position of the adjustment portion and the base is locked. Furthermore, the angle of the seat portion relative to the base is also locked. The connection method in which the first latch engages with the second latch effectively prevents the seat portion from suddenly falling relative to the base under the influence of external factors, thereby improving the safety of the swing chair. The angle adjustment mechanism also includes an adapter, which can be connected to the adjustment portion, and the end of the adapter facing away from the adjustment portion is suitable for connecting to the seat portion. The adapter is annular, and a plurality of positioning holes are provided along the circumference of the adapter. The positioning holes match the positioning posts of the seat portion one by one, thereby improving the positioning effect of the seat portion and the adjustment portion, and at the same time improving the stability of the connection between the two. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0043] Figure 1 This is a structural diagram of a swing chair from a first perspective in one embodiment of the present invention;

[0044] Figure 2 This is a schematic diagram of the structure decomposition of a swing chair in one embodiment of the present invention;

[0045] Figure 3 This is a structural diagram of a swing chair from a second perspective in one embodiment of the present invention;

[0046] Figure 4 This is a schematic diagram of the structure of the base connected to the base when the shell is hidden in one embodiment of the utility model;

[0047] Figure 5 This is a schematic structural diagram of the angle adjustment mechanism in an embodiment of the present utility model; wherein, the base has the housing hidden.

[0048] Figure 6 This is a schematic structural diagram of the locking part locking the adjusting part in an embodiment of the present utility model.

[0049] Figure 7 This is a schematic structural diagram of the adjusting part connected to the connecting seat in an embodiment of the present utility model.

[0050] Figure 8 This is a schematic structural diagram of the adjusting part in an embodiment of the present utility model.

[0051] Figure 9 This is a schematic structural diagram of the locking part in an embodiment of the present utility model.

[0052] Figure 10 This is a schematic structural diagram of the protective shell in an embodiment of the present utility model.

[0053] Figure 11 This is a schematic structural diagram of the elastic reset member in an embodiment of the present utility model.

[0054] Explanation of the reference numerals in the drawings:

[0055] Swing chair 10;

[0056] Angle adjustment mechanism 100;

[0057] Base 110;

[0058] Housing 111; Accommodation cavity 1111; Body part 1112; Expansion part 1113; Avoidance hole 11131;

[0059] Locking part 120;

[0060] First tooth 121; First tooth 1211;

[0061] Drive end 122;

[0062] Rotating shaft 123;

[0063] Locking block 124;

[0064] Adjusting part 130;

[0065] Second tooth 131; Second tooth 1311;

[0066] Mounting part 132;

[0067] Abutting part 133;

[0068] Engaging surface 134;

[0069] Protective shell 140;

[0070] Mounting hole 141;

[0071] Recess 142;

[0072] Protrusion 143;

[0073] Protruding part 144;

[0074] Elastic reset member 150;

[0075] First energy storage part 151;

[0076] Second energy storage part 152;

[0077] First connecting part 153; First extension rod 1531; Second extension rod 1532; Intermediate rod 1533;

[0078] Depression 15331;

[0079] Second connecting part 154;

[0080] Base 200;

[0081] Seat part 300;

[0082] Connection seat 400; Adapter 410; Support member 420;

[0083] First circumferential direction X; First direction Y.

[0084] The realization of the purpose, functional features and advantages of the present utility model will be further described in conjunction with the embodiments and with reference to the accompanying drawings. Specific embodiments

[0085] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0086] In the related art, for the adjustment of the tilt angle of a swing chair, a cylinder is usually provided between the seat and the base. By controlling the inflow and outflow of gas in the cylinder, the telescopic length of the cylinder is changed. Thus, the tilt angle of the seat connected to the output end of the cylinder relative to the base can change with the telescopic length of the cylinder. However, after long-term use of the cylinder, the airtightness of the piston in the cylinder and the overall cylinder system will drop significantly, making it impossible to effectively fix the angle of the swing chair after adjustment. Moreover, there may be a situation where the cylinder suddenly deflates and the seat suddenly drops, resulting in a reduction in the safety of the swing chair. In addition, for the adjustment of the tilt angle of a swing chair, in the related art, components such as a motor, a control module, and a sensor are also provided in the swing chair. The sensor is used to obtain an angle adjustment signal. After the controller obtains this angle adjustment signal, it controls the rotation direction and speed of the motor according to a preset program or a user's operation instruction, so as to achieve the effect of adjusting the angle of the seat relative to the base. However, in order to link the rotation of the motor with the angle adjustment of the seat, a seat support structure and a suitable transmission structure need to be designed, which increases the design difficulty of the swing chair. At the same time, components such as the control module, the motor, the sensor, and the transmission structure will also increase the material cost of the swing chair.

[0087] In view of this, please refer to Figures 1 to 11, the present utility model provides an angle adjustment mechanism 100, which is applicable to a swing chair 10. The swing chair 10 includes a base 200 and a seat portion 300. The setting of the angle adjustment structure enables the swing chair 10 to adjust the angle. Among them, the angle adjustment mechanism 100 includes a base 110, a locking portion 120, and an adjustment portion 130. The base 110 can be connected to the base 200, and the locking portion 120 and the adjustment portion 130 are rotatably connected to the base 110. The adjustment portion 130 can be connected to the seat portion 300. Thus, when the adjustment portion 130 and the locking portion 120 rotate relative to the base 110, the seat portion 300 can rotate relative to the base 200. Specifically, the locking portion 120 includes a first tooth 121, and the locking portion 120 can rotate relative to the base 110 about a first axis to a locking position and a release position. The adjustment portion 130 includes a second tooth 131, and the rotation axis of the adjustment portion 130 is parallel to the first axis. While making full use of the space of the angle adjustment mechanism 100, it also reduces the design difficulty of the cooperation between the adjustment portion 130 and the locking portion 120. When the locking portion 120 is in the locking position, the first tooth 121 meshes with the second tooth 131. Thus, the position of the adjustment portion 130 relative to the base 110 is in a locked state, and the angle of the seat portion 300 relative to the base 200 is fixed accordingly. When the locking portion 120 is in the release position, the first tooth 121 is separated from the second tooth 131. Thus, the adjustment portion 130 can rotate relative to the base 110 about the rotation axis, so that the connection position between the second tooth 131 and the first tooth 121 can be switched as the adjustment portion 130 rotates, and the angle of the seat portion 300 relative to the base 200 changes as the connection position between the first tooth 121 and the second tooth 131 is switched. Compared with the related art, the swing chair 10 with the angle adjustment mechanism 100 realizes the adjustment of the inclination angle of the seat portion 300 while omitting components such as a control module, a motor, and a sensor for controlling the angle adjustment of the seat portion 300, reducing the material cost of the swing chair 10. Moreover, by meshing the first tooth 121 with the second tooth 131, the angle of the swing chair 10 can be positioned at a certain determined angle after adjustment, thereby improving the comfort of the swing chair 10 and avoiding the problem of the safety of the swing chair 10 being reduced due to the sudden drop of the seat portion 300.

[0088] The first tooth 121 includes a plurality of first teeth 1211. Exemplarily, the number of the first teeth 1211 can be one or two (please refer to Figure 9, in the present application, it is described by taking the first cogs 121 including two first teeth 1211 as an example), the number of the first teeth 1211 provided may also be greater than two. Among them, each first tooth 1211 is distributed around the first axis, that is, the distribution locus of each first tooth 1211 may be in a curve shape. Thus, when the first tooth 1211 meshes with the second cogs 131, the outer contour of the first tooth 1211 can be fitted into the second cogs 131, improving the meshing tightness between the first tooth 1211 and the second cogs 131, thereby improving the connection reliability between the two. In some embodiments, when the locking portion 120 is in the locking position, any one of the plurality of first teeth 1211 meshes with the second cogs 131. In other embodiments, when the locking portion 120 is in the locking position, each first tooth 1211 meshes with the second cogs 131.

[0089] The second cogs 131 include a plurality of second teeth 1311 (please refer to Figure 8 , in the present application, it is described by taking the second cogs 131 including three second teeth 1311 as an example), it should be noted that the more the number of the second teeth 1311 provided, the more the angle gears that the seat portion 300 can adjust. Thus, within a certain adjustment angle range, the angle adjustment accuracy of the seat portion 300 is higher. Among them, each second tooth 1311 is distributed around the rotation axis, that is, the distribution locus of each second tooth 1311 may be in a curve shape. Thus, when the first tooth 1211 meshes with the second tooth 1311, the recessed shape between adjacent second teeth 1311 can fit the outer contour shape of the first tooth 1211, making the meshing between the first tooth 1211 and the second tooth 1311 more reliable. In some embodiments, when the locking portion 120 is in the locking position, any one of the plurality of second teeth 1311 can mesh with the first tooth 1211. In other embodiments, at least two second teeth 1311 mesh with the first tooth 1211.

[0090] Please refer to Figure 6 and Figure 9 , one end of the locking portion 120 departing from the first cogs 121 is provided with a driving end 122, and the driving end 122 is configured to be driven to drive the first cogs 121 to rotate relative to the base 110 around the first axis, so that the locking portion 120 is switched between the locking position and the release position. The angle adjustment structure further includes a protective housing 140. One end of the protective housing 140 close to the adjustment portion 130 is provided with a mounting hole 141, and the driving end 122 can extend into the mounting hole 141 and be fixedly connected to the protective housing 140. In some embodiments, please refer to Figure 10, one end of the protective shell 140 close to the adjusting part 130 has an opening, and the protective shell 140 has a cavity. The opening communicates with the cavity. The driving end 122 can be inserted into the cavity through the opening, and the outer wall of the driving end 122 is clamped with the inner wall surface of the cavity. The setting of the protective shell 140 can play a role in extending the driving end 122, reducing the force required to drive the rotation of the locking part 120, so as to facilitate the user to adjust the angle of the seat part 300 easily. Please refer to Figure 9 , the locking part 120 includes a rotating shaft 123 rotatably connected to the base 110, and the rotating shaft 123 is located between the driving end 122 and the first cogs 121. The extending direction of the rotating shaft 123 is parallel to the first axis. One end of the protective shell 140 close to the rotating shaft 123 is provided with a recess 142, and the recess 142 communicates with the opening. Both ends of the rotating shaft 123 extend into the recess 142 in a direction perpendicular to the first axis and extend out of the recess 142 in a direction parallel to the first axis and are rotatably connected to the base 110. Specifically, the rotating shaft 123 can be clamped in the recess 142 along with the driving end 122 through the opening. The recessed shape of the recess 142 matches the cross-sectional contour shape formed by the rotating shaft 123 in the cross-section perpendicular to the first axis. Thus, the rotating shaft 123 can accurately extend into the recess 142, which helps to ensure the accurate alignment and cooperation between the rotating shaft 123 and the protective shell 140, thereby reducing the friction and wear between the rotating shaft 123 and the protective shell 140, and reducing the noise during the angle adjustment process of the swing chair 10 while extending the service life of the protective shell 140. Moreover, the presence of the recess 142 enables the rotating shaft 123 to be restricted to a certain extent in the direction perpendicular to the first axis, thereby enhancing the stability of the rotating shaft 123 during rotation.

[0091] In some embodiments, in order to further improve the stability of the rotating shaft 123 clamped in the recess 142, please refer to Figure 10 , the protective shell 140 is provided with a raised part 143, and the raised part 143 is connected to the peripheral side of the recess 142. When the rotating shaft 123 passes through the recess 142, it can be clamped between adjacent raised parts 143. The setting of the raised part 143 is also beneficial to enhancing the mechanical strength of the recess 142. In order to facilitate the rotating shaft 123 to be clamped into the recess 142 through the space between adjacent raised parts 143, the wall surfaces of the adjacent raised parts 143 close to the recess 142 are inclined, that is, in the direction from the driving end 122 to the rotating shaft 123, the distance between the opposite two wall surfaces of the adjacent raised parts 143 gradually increases.

[0092] Please refer to Figure 6The angle adjustment mechanism 100 further includes an elastic return member 150, which can be connected to the locking portion 120 and the base 110, respectively. The elastic return member 150 is configured to generate an elastic force that drives the locking portion 120, which is in the released position, to the locked position. Therefore, when the driving force applied to the locking portion 120 is greater than the elastic force of the elastic return member 150, the first latch 121 can disengage the second latch 131, and the adjustment portion 130 can rotate about the rotation axis to adjust the angle of the seat portion 300. When the driving force applied to the locking portion 120 is removed, the first latch 121 can stably engage with the second latch 131 under the action of the elastic force of the elastic return member 150, thereby allowing the seat portion 300 to be securely positioned at a certain tilt angle. Therefore, the provision of the elastic return member 150 effectively improves the anti-fall performance of the swing chair 10.

[0093] In some embodiments, the elastic return member 150 may be a torsion spring. For details, see Figure 11 The torsion spring includes a first energy storage part 151, a second energy storage part 152, a first connecting part 153, and a second connecting part 154. The first energy storage part 151 and the second energy storage part 152 are hollow cylindrical, and the first energy storage part 151 can be coaxially arranged with the second energy storage part 152. The two ends of the first connecting part 153 are respectively connected to the first energy storage part 151 and the second energy storage part 152. In some embodiments, one end of the first connecting part 153 is connected to the end of the first energy storage part 151 close to the second energy storage part 152, and the other end is connected to the end of the second energy storage part 152 close to the first energy storage part 151. The second connecting part 154 is connected to the end of the first energy storage part 151 away from the first connecting part 153 and / or to the end of the second energy storage part 152 away from the first connecting part 153. In some embodiments, the second connecting portion 154 includes a first portion and a second portion, wherein the first portion can connect to an end of the first energy storage portion 151 that is away from the first connecting portion 153 and away from the second energy storage portion 152, and the second portion can connect to an end of the second energy storage portion 152 that is away from the first connecting portion 153 and away from the first energy storage portion 151. Figure 9 The locking portion 120 includes a locking block 124 and a rotating shaft 123 extending through the locking block 124 along the first direction Y. The locking block 124 includes a first latch 121. The first energy storage portion 151 is sleeved on one end of the rotating shaft 123, and the second energy storage portion 152 is sleeved on the other end of the rotating shaft 123. That is, the first energy storage portion 151 and the second energy storage portion 152 are respectively located on both sides of the locking block 124 along the first direction Y. The first connecting portion 153 abuts against the side of the locking block 124 away from the first latch 121, and the second connecting portion 154 abuts against the base 110. Therefore, when the first latch 121 and the second latch 131 are engaged, please refer to Figure 6Under the action of the first energy storage part 151 and the second energy storage part 152, the first connecting part 153 has a rotation tendency close to the locking part 120, so that the first latch tooth 121 has a force toward the second latch tooth 131. Under this force, the first latch tooth 121 is tightly engaged with the second latch tooth 131.

[0094] See also Figure 11 The first connecting portion 153 includes a first extension rod 1531, a second extension rod 1532, and an intermediate rod 1533. The first extension rod 1531 is connected to the first energy storage portion 151 at one end and to the intermediate rod 1533 at the other end. The second extension rod 1532 is connected to the second energy storage portion 152 at one end and to the intermediate rod 1533 at the other end, facing away from the first extension rod 1531. The intermediate rod 1533 includes a recessed portion 15331, into which the side of the locking block 124 facing away from the first latching tooth 121 can be inserted. The recessed portion 15331 limits the movement of the locking block 124 along the first direction Y, allowing the first latching tooth 121 to remain engaged with the second latching tooth 131. This prevents the locking block 124 from moving along the first direction Y due to external forces or vibrations, which could cause the first latching tooth 121 to separate from the second latching tooth 131. This improves the stability of the angle adjustment mechanism 100 when locked. The locking portion 120 is configured to rotate relative to the base 110 along the first circumferential direction X from a locked position to a released position, with the first extension rod 1531 being bent in a direction protruding along the first circumferential direction X; and / or the second extension rod 1532 being bent in a direction protruding along the first circumferential direction X. The first extension rod 1531 and the second extension rod 1532 may both be bent, or either one may be bent. For ease of description, the following description will take the example of both the first extension rod 1531 and the second extension rod 1532 being bent. Figure 6 The first extension rod 1531 and the second extension rod 1532 are both bent along the direction of the first circumferential X protrusion. Therefore, when the locking portion 120 is in the locking position, the bending parts of the first extension rod 1531 and the second extension rod 1532 can provide an additional torque, which has a tendency to cause the first extension rod 1531 and the second extension rod 1532 to change from a bent state to a straight state, and the intermediate rod 1533 connected to the first extension rod 1531 and the second extension rod 1532 abuts against the side of the locking block 124 away from the first tooth 1211. Therefore, under the action of this torque, the meshing tightness of the first latch tooth 121 and the second latch tooth 131 is higher, thereby improving the locking stability of the angle adjustment mechanism 100.

[0095] In order to further prevent the adjustment portion 130 and the locking portion 120 from moving due to external force or vibration after being locked, in some embodiments, please refer to Figure 8, one end of the adjusting part 130 facing away from the second tooth part 131 is provided with a mounting part 132 and a resisting part 133. Among them, the mounting part 132 is configured to be rotatably connected to the base 110, the resisting part 133 is located on the side of the mounting part 132 close to the base 110, and the resisting part 133 is configured to be able to abut against the base 110. After the adjusting part 130 is locked with the locking part 120, even if the adjusting part 130 has a tendency to rotate towards the base 110 under external force or vibration, due to the resisting part 133 abutting against the base 110 and the second tooth 131 meshing with the first tooth 121, the adjusting part 130 cannot rotate towards the base 110 under the support of the resisting part 133 and the locking part 120. It should be noted that since the first tooth 121 meshes with the second tooth 131, even if the adjusting part 130 has a tendency to rotate away from the base 110 under external force or vibration, the locking part 120 can provide a reverse pulling force to offset the tendency of the adjusting part 130 to rotate away from the base 110. The setting of the locking part 120 further improves the stability of the angle adjusting mechanism 100.

[0096] The second aspect of the present utility model further provides a swing chair 10, which includes the angle adjusting mechanism 100 described in any of the above embodiments. Please refer to Figures 1 to 3 , the swing chair 10 further includes a base 200 and a seat part 300. Among them, the angle adjusting mechanism 100 is arranged between the base 200 and the seat part 300. The upper end of the base 200 is connected to the base 110, and the lower end of the seat part 300 is connected to the adjusting part 130. When the adjusting seat wants to rotate relative to the base 110, the seat part 300 can rotate relative to the base 110 around the transverse axis with the rotation of the adjusting part 130, so that the angle of the seat part 300 relative to the base 200 changes.

[0097] The locking part 120 includes a protective shell 140. The setting of the protective shell 140 can provide physical protection for the rotating shaft 123, the first tooth 121 and the second tooth 131, avoiding direct contact with the outside and potential damage. Please refer to Figure 2 , the base 110 includes a housing 111, the housing 111 has a receiving cavity 1111, and other structures included in the base 110 can be received in the receiving cavity 1111. The housing 111 can provide a protective effect on the structures located in the receiving cavity 1111, avoiding interference from foreign objects outside to the interaction between the structures in the housing 111. The locking part 120 is located in the receiving cavity 1111 and at one end close to the seat part 300. The two sides of the protective shell 140 in the horizontal and perpendicular to the first axis direction are provided with protruding parts 144, and the protruding parts 144 are located in the receiving cavity 1111. Please refer to Figure 3, the housing 111 is provided with an avoidance hole 11131. One end of the protective shell 140 facing away from the seat portion 300 passes through the avoidance hole 11131 to rotate relative to the base 110 after obtaining a driving force. The setting of the avoidance hole 11131 is beneficial for the angle adjustment mechanism 100 to obtain a driving force from the outside to drive the rotation of the locking portion 120, thereby improving the operability of the angle adjustment of the swing chair 10. It should be noted that when the protective shell 140 rotates around the rotation axis 123 along with the driving portion, the outer wall of the protruding portion 144 can slide relative to the inner wall of the housing 111, so that the avoidance hole 11131 is always blocked by the protective shell 140, effectively avoiding the risk of foreign objects entering the angle adjustment mechanism 100 through the avoidance hole 11131. Therefore, the setting of the protruding portion 144 increases the protection force of the protective shell 140 on structures such as the locking portion 120 and the adjustment portion 130.

[0098] In some embodiments, please refer to Figure 2 and Figure 3 , the housing 111 includes a main body portion 1112 and an expansion portion 1113. The expansion portion 1113 protrudes from the main body portion 1112 in the transverse direction and perpendicular to the first axis, and the expansion portion 1113 is located on the side of the main body portion 1112 facing away from the entrance of the seat portion 300. The avoidance hole 11131 is provided at the lower end of the expansion portion 1113, and at least a part of the locking portion 120 can be accommodated in the expansion portion 1113. Among them, the user can lie and sit on the swing chair 10 from the entrance of the seat portion 300. Therefore, the expansion portion 1113 being provided on the side of the main body portion 1112 facing away from the entrance of the seat portion 300 can effectively avoid the risk of accidental contact with the locking portion 120, thereby reducing the probability of the sudden drop of the seat portion 300 and improving the comfort of the swing chair 10.

[0099] To improve the comfort of the swing chair 10, the outer contour of the seat portion 300 is arc-shaped. To effectively adjust the inclination angle of the swing chair 10, the second teeth 1311 are distributed vertically on the adjustment portion 130. To reduce the weight of the adjustment portion 130 and increase the adjustable angle range of the seat portion 300, the dimension of the adjustment portion 130 in the direction parallel to the rotation axis is as small as possible on the premise of meeting the mechanical strength. Therefore, the dimension of the adjustment portion 130 in the direction parallel to the rotation axis is much smaller than the dimension of the adjustment portion 130 in the vertical direction. To reduce the connection difficulty between the adjustment portion 130 and the seat portion 300, please refer to Figure 2, the swing chair 10 further includes a connecting seat 400, which is connected to the lower end of the seat portion 300, and the side of the connecting seat 400 facing away from the seat portion 300 is connected to the adjusting portion 130. The connecting seat 400 is provided with a plurality of positioning holes, and some of the positioning holes are arranged in a triangular pattern, thereby improving the positioning effect between the seat portion 300 and the connecting seat 400. Among them, the diameter of the positioning hole can be 3.3 mm. In some embodiments, the connecting seat 400 includes an adapter 410 and a support 420. The support 420 is provided with a clamping groove, and one end of the adjusting portion 130 close to the seat portion 300 is provided with a clamping surface 134. One end of the adjusting portion 130 close to the seat portion 300 can be inserted into the clamping groove, and the clamping surface 134 can abut against the side of the support 420 close to the adjusting portion 130. The side of the support 420 facing away from the adjusting portion 130 can be connected to the side of the adapter 410 facing away from the seat portion 300.

[0100] In some embodiments, the connecting seat 400 further includes a protective portion, which is located on the side of the adapter 410 facing away from the seat portion 300, and the protective portion is arranged around the circumferential side of the adapter 410. The protective portion is arc-shaped around the rotation axis and in the vertical direction, and one end of the protective portion facing away from the adapter 410 can be inserted into the accommodating cavity 1111. When the seat portion 300 adjusts the angle, the inner wall of the expansion portion 1113 can slide relative to the outer wall of the protective portion. The expansion portion 1113 and the protective portion can protect mechanisms such as the locking portion 120 and the adjusting portion 130 from being affected by foreign objects.

[0101] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0102] In addition, if there are descriptions such as "first", "second", etc. involved in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second" can explicitly or implicitly include at least one of such features. In addition, if "and / or", "and / or" or "and / or" appear throughout the text, their meanings include three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or the solution where A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0103] The above are only the preferred embodiments of the present utility model, and do not thus limit the patent scope of the present utility model. Any equivalent structural transformation made under the inventive concept of the present utility model by using the content of the specification and drawings of the present utility model, or any direct / indirect application in other related technical fields shall be included within the patent protection scope of the present utility model.

Claims

1. An angle adjustment mechanism, applicable to a swing chair, the swing chair comprising a seat portion and a base, characterized in that, The angle adjustment mechanism comprises: a base, adapted to be connected to the base; a locking portion, rotatably connected to the base and capable of rotating relative to the base around a first axis to a locking position and a release position, wherein the locking portion includes a first latch tooth; an adjusting portion adapted to be connected to the seat portion, the adjusting portion being rotatably connected to the base, the rotation axis of the adjusting portion being parallel to the first axis, and the adjusting portion comprising a second latching tooth; an adapter connected to the adjustment portion, wherein one end of the adapter facing away from the adjustment portion is adapted to be connected to the seat portion, the adapter being annular and having a plurality of positioning holes formed along its circumference, each of the positioning holes being adapted to engage with a plurality of positioning posts of the seat portion one by one, and further having a plurality of threaded holes formed along its circumference for threaded connection with the seat portion; When the locking portion is in the locking position, the first latch tooth engages with the second latch tooth to lock the relative position of the adjusting portion and the base; when the locking portion is in the releasing position, the first latch tooth is separated from the second latch tooth, and the adjusting portion can be rotated relative to the base around the rotation axis to switch the connection position of the second latch tooth and the first latch tooth.

2. The angle adjustment mechanism according to claim 1, wherein: The first latching tooth includes a plurality of first teeth, each of which is distributed around the first axis. When the locking portion is in the locking position, at least one of the first teeth is engaged with the second latching tooth. and / or; The second latching teeth include a plurality of second teeth, each of which is distributed around the rotation axis. When the locking portion is in the locking position, at least one of the second teeth is engaged with the first latching teeth.

3. The angle adjustment mechanism according to claim 1, wherein: A driving end is provided at one end of the locking portion facing away from the first latching tooth, wherein the driving end is configured to be driven to drive the first latching tooth to rotate relative to the base around the first axis, so that the locking portion switches between the locking position and the release position; The angle adjustment mechanism further includes a protective shell, the protective shell is provided with a mounting hole, the driving end extends into the mounting hole and is fixedly connected to the protective shell; The locking portion includes a rotating shaft rotatably connected to the base, and the protective shell is provided with a recess at one end close to the rotating shaft. Both ends of the rotating shaft extend into the recess in a direction perpendicular to the first axis and extend out of the recess in a direction parallel to the first axis and are rotatably connected to the base. The protective shell is provided with a raised portion, and the raised portion is connected to the peripheral side of the recessed portion. When the rotating shaft is passed through the recessed portion, it can be clamped between adjacent raised portions.

4. The angle adjustment mechanism according to claim 1, wherein: The angle adjustment mechanism further includes an elastic return member, the elastic return member being connected to the locking portion and the base, respectively, and the elastic return member being configured to generate an elastic force driving the locking portion located at the release position to the locking position; The elastic return member is a torsion spring, which includes a first energy storage part, a second energy storage part, a first connecting part, and a second connecting part. The two ends of the first connecting part are respectively connected to the first energy storage part and the second energy storage part. The second connecting part is connected to an end of the first energy storage part away from the first connecting part and / or connected to an end of the second energy storage part away from the first connecting part. The locking portion includes a locking block and a rotating shaft passing through the locking block along a first direction, the locking block includes the first latch tooth, the first energy storage portion is sleeved on one end of the rotating shaft, and the second energy storage portion is sleeved on the other end of the rotating shaft, the first connecting portion abuts against the side of the locking block away from the first latch tooth, and the second connecting portion abuts against the base.

5. The angle adjustment mechanism according to claim 4, wherein: The first connecting portion includes a first extension rod, a second extension rod, and an intermediate rod, wherein one end of the first extension rod is connected to the first energy storage portion and the other end is connected to the intermediate rod, and one end of the second extension rod is connected to the second energy storage portion and the other end is connected to an end of the intermediate rod away from the first extension rod, and the intermediate rod includes a recessed portion, and a side of the locking block away from the first latching tooth is embedded in the recessed portion; The locking portion is configured to rotate from the locking position to the releasing position along a first circumferential direction relative to the base, the first extension rod is bent in the direction of the first circumferential protrusion; and / or the second extension rod is bent in the direction of the first circumferential protrusion.

6. The angle adjustment mechanism according to claim 1, wherein: An end of the adjusting portion away from the second tooth portion is provided with a mounting portion and a supporting portion, the mounting portion is configured to be rotatably connected to the base, the supporting portion is located on a side of the mounting portion close to the base, and the supporting portion is configured to be able to abut against the base.

7. The angle adjustment mechanism according to claim 1, wherein: The adapter is provided with three positioning holes, each of which is provided at one end of the adapter, and at least one threaded hole is provided between each of the positioning holes.

8. A swing chair, characterized in that, include: The angle adjustment mechanism according to any one of claims 1 to 7; a base, the upper end of which is connected to the base; as well as The seat portion has a lower end connected to the adjustment portion, and the seat portion can rotate along with the adjustment portion relative to the base around a transverse axis.

9. The swing chair according to claim 8, wherein: The locking portion includes a protective shell, wherein one end of the protective shell close to the rotating shaft is provided with a recess, and both ends of the rotating shaft extend into the recess in a direction perpendicular to the first axis and extend out of the recess in a direction parallel to the first axis and are rotatably connected to the base; The base includes a housing having a receiving cavity. The locking portion is located in the receiving cavity and near one end of the seat portion. The protective shell is provided with protruding portions on both sides in the transverse direction and perpendicular to the first axis direction. The protruding portions are located in the receiving cavity. The housing is provided with an avoidance hole, and one end of the protective shell facing away from the seat portion passes through the avoidance hole for rotating relative to the base after obtaining a driving force.

10. The swing chair according to claim 9, wherein the housing includes a main body portion and an expansion portion. The expansion portion protrudes from the main body portion in the transverse direction and perpendicular to the first axis, and the expansion portion is located on a side of the main body portion away from the entrance of the seat portion. The avoidance hole is provided at the lower end of the expansion portion.

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