Pivot joint and sitting posture correcting device with same

Abstract

The invention discloses a pivoting joint and a sitting posture correcting device with the same, the pivoting joint comprises a first main body and a second main body, the first main body is provided with a pivoting port, the pivoting port is provided with two opposite side walls, and at least one of the two opposite side walls is provided with a rotating shaft part; the second main body comprises a first shell part and a second shell part, and at least one of the two ends of the first shell part is provided with a first open hole; the first shell part and the second shell part can be combined in the pivoting port and are detachably connected, the first open hole and the second shell part are combined to form a pivoting hole, and the pivoting hole is in pivoting fit with the rotating shaft part; a hanging and stopping structure is arranged between at least one rotating shaft part and the first shell part, and the hanging and stopping structure is configured to enable the first shell part and the first main body to be relatively fixed in the radial direction of the rotating shaft part and not to be separated after the first shell part is combined into the pivoting opening and rotates by a preset angle. The pivot joint is more reliable and stable in structure and can adapt to application scenes with large loads.

Description

Technical Field

[0001] The invention relates to a pivot joint, in particular to a pivot joint and a sitting posture correction device having the pivot joint. Background Art

[0002] In some types of products such as brackets and connecting arms, pivot joints are usually provided to enable these products to be rotated and adjusted to meet the needs of application scenarios.

[0003] Taking a sitting posture corrector as an example, the sitting posture corrector usually includes a desktop panel and a correction bracket, and the correction bracket is pivotally connected to the desktop panel, so that the correction bracket can be flipped upward and erected above the desktop panel when in use, and can be flipped downward and stored under the desktop panel when not in use. However, in order to facilitate assembly, a pivot interface is provided on the desktop panel, and the two side walls of the pivot interface are respectively provided with a rotating shaft, and the lower end of the correction bracket is usually configured as two half-shell structures, the two half-shells are combined in the pivot interface and are pivotally connected with the two rotating shafts, and the combined two half-shells can be fixed by fasteners such as screws.

[0004] In the above-mentioned posture corrector, after the lower end of the correction bracket is pivotally connected to the pivot interface of the desktop, during use, the correction bracket needs to bear the load of the user's body pressure, so the correction bracket has poor structural stability and reliability, which affects the user experience. In addition, after the screws are loosened, the half shell is easy to detach from the shaft, causing damage to the posture corrector, which seriously affects the service life of the posture corrector. Summary of the invention

[0005] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the object of the present invention is to provide a pivot joint and a sitting posture correction device having the same.

[0006] To achieve the above object, on the one hand, a pivot joint according to an embodiment of the present invention includes:

[0007] A first body, wherein the first body has a pivot interface, the pivot interface has two opposite side walls, and at least one of the two opposite side walls has a rotating shaft portion;

[0008] A second body, the second body comprising a first shell portion and a second shell portion, at least one of the two ends of the first shell portion being provided with a first open hole; the first shell portion and the second shell portion being capable of being assembled in the pivot interface and detachably connected, the first open hole and the second shell portion being assembled to form a pivot hole, the pivot hole being pivotally matched with the rotating shaft portion;

[0009] Among them, a hanging structure is provided between at least one of the rotating shaft parts and the first shell part, and the hanging structure is constructed so that when the first shell part is combined into the pivot interface and rotated by a predetermined angle, the first shell part and the first main body can be relatively fixed in the radial direction of the rotating shaft part and cannot be separated.

[0010] In addition, the pivot joint according to the above embodiment of the present invention may also have the following additional technical features:

[0011] According to an embodiment of the present invention, the locking structure comprises a stop edge and a locking foot, the stop edge is formed on the end surface of the free end of the shaft portion, and the free end is an end of the shaft portion extending into the pivot hole;

[0012] The hanging foot is arranged inside the first shell, and the hanging foot has a protrusion protruding toward one side of the free end of the rotating shaft; when the first shell is combined into the pivot interface and rotated by a predetermined angle, the protrusion and the stop edge form a hanging state, so that the first shell and the first main body are relatively fixed in the radial direction along the rotating shaft.

[0013] According to an embodiment of the present invention, the stopper extends circumferentially around the axis of the rotating shaft portion to form an arc, and the surface where the protrusion contacts the stopper is formed as an arc surface.

[0014] According to an embodiment of the present invention, the end surface of the free end is provided with a plurality of positioning grooves, and the plurality of positioning grooves are arranged at intervals on the free end in the circumferential direction around the axis of the rotating shaft portion;

[0015] The locking leg is elastic. When the second body rotates, the protrusion rotates with the second body and selectively engages with one of the plurality of positioning grooves to limit the second body to different positions.

[0016] According to an embodiment of the present invention, one end of the hanging leg is connected to the inner wall of the first shell portion, and the other end of the hanging leg extends toward one side of the second shell portion;

[0017] The positioning groove is a strip groove extending radially along the shaft portion, the protruding portion is formed as a strip portion adapted to the strip groove, and the strip portion extends along the length direction of the hanging leg on the side of the hanging leg adjacent to the shaft portion;

[0018] When the first shell portion is assembled into the pivot interface and rotated by a predetermined angle, one end of the strip portion adjacent to the first shell portion forms the hooking state with the stop edge.

[0019] According to one embodiment of the present invention, the pivot interface is a U-shaped opening with one side open, and the stop edge is a semicircular arc portion. When the first shell portion is assembled into the pivot interface and rotated 180°, the protrusion and the stop edge form the hanging state.

[0020] According to an embodiment of the present invention, the cross-section of the strip-shaped portion is semicircular, triangular or trapezoidal, and the strip-shaped groove is adapted to the strip-shaped portion.

[0021] According to an embodiment of the present invention, the outer peripheral surface of the rotating shaft portion is provided with a circumferentially arranged neck groove, and the end wall of the first shell portion and the end wall of the second shell portion are clamped in the neck groove.

[0022] According to one embodiment of the present invention, the two opposite side walls each have the rotating shaft portion;

[0023] The first opening holes are provided at both ends of the first shell portion, and the two first opening holes and the two ends of the second shell portion are respectively combined to form one pivot hole;

[0024] The two pivot holes correspond to the two rotating shaft parts one by one and are pivotally matched, and the hanging structure is provided between each rotating shaft part and the first shell part.

[0025] According to an embodiment of the present invention, at least one of the two ends of the second shell portion is provided with a second open hole, and the second open hole is combined with the corresponding first open hole to form the pivot hole.

[0026] On the other hand, a sitting posture correction device according to an embodiment of the present invention includes:

[0027] As for the pivot joint as described above, the first body is a desktop panel, the pivot interface is formed at the edge of the desktop panel; a sleeve portion is formed on the first shell portion;

[0028] A telescopic correction bracket, the lower end of which is connected to the sleeve portion so as to be rotatable relative to the desktop panel.

[0029] According to one embodiment of the present invention, the different positions include at least a first position and a second position. When the second body is located at the first position, the correction bracket is located above the desktop panel and is substantially perpendicular to the desktop panel; when the correction bracket is located at the second position, the correction bracket is located below the desktop panel and forms a predetermined angle with the desktop panel.

[0030] According to the pivot joint and the sitting posture correction device provided by the embodiment of the present invention, in the pivot joint, a hanging structure is provided between at least one of the two rotating shaft parts and the first shell part, and the hanging structure is configured so that when the first shell part is combined into the pivot interface and rotated by a predetermined angle, the first shell part and the first main body can be relatively fixed in the radial direction of the rotating shaft part and cannot be separated. In this way, the pivot joint formed after the first main body and the second main body are assembled has a more reliable and stable structure and can adapt to the application scenario with a larger load. In addition, under the action of the hanging structure, the first shell part and the first main body cannot be separated, and a good combination state is maintained, so that the pivot joint is not easy to be damaged, has a longer service life, and improves the quality of the product and the user experience.

[0031] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 creative work.

[0033] Figure 1 is a schematic structural diagram of a pivot joint according to an embodiment of the present invention;

[0034] Figure 2 is a cross-sectional view of a pivot joint according to an embodiment of the present invention;

[0035] Figure 3 yes Figure 2 A partial enlarged view of the middle A;

[0036] Figure 4 is an exploded view of a pivot joint according to an embodiment of the present invention;

[0037] Figure 5 yes Figure 4 A partial enlarged view of the middle A;

[0038] Figure 6 is a schematic structural diagram of a first shell portion in a pivot joint according to an embodiment of the present invention;

[0039] Figure 7 is a cross-sectional view of a pivot joint in an exploded state according to an embodiment of the present invention;

[0040] Figure 8 is a first schematic diagram of the assembly process of the pivot joint according to an embodiment of the present invention;

[0041] Fig. 9 is a second schematic diagram of the assembly process of the pivot joint according to the embodiment of the present invention;

[0042] Fig.10 1 is a schematic diagram of the structure of the sitting posture correction device (the correction bracket is located in the first position) according to an embodiment of the present invention;

[0043] Fig.11 It is a structural schematic diagram of the sitting posture correction device (the correction bracket is located in the second position) according to an embodiment of the present invention.

[0044] Reference numerals:

[0045] 10. The first subject;

[0046] H10, pivot interface;

[0047] 101, rotating shaft;

[0048] 1011, stop edge;

[0049] H101, neck groove;

[0050] H102, positioning groove;

[0051] 20. Second subject;

[0052] 201, first shell;

[0053] 2011, hanging foot;

[0054] 2011a, convex part;

[0055] H201, first opening hole;

[0056] 202, second shell;

[0057] H202, second opening hole;

[0058] 30. Telescopic correction bracket.

[0059] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0060] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but are not to be construed as limiting the present invention. All other embodiments obtained by ordinary technicians in the field without creative work based on the embodiments of the present invention are within the scope of protection of the present invention.

[0061] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “circumferential”, “radial”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0062] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0063] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0064] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0065] The pivot joint and the sitting posture correction device having the same according to the embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0066] Reference Figures 1 to 9As shown, the pivot joint provided according to the embodiment of the present invention includes a first body 10 and a second body 20. It should be understood that the first body 10 and the second body 20 can be designed as different structural components in specific applications. For example, in a sitting posture corrector, the first body 10 can be a desktop panel, and the second body 20 can be a part of the correction bracket. In some rotating arms, the first body 10 can be a first support arm, and the second body 20 can be a second support arm.

[0067] The first body 10 has a pivot interface H10 having two opposite side walls, at least one of which has a shaft portion 101. The shaft portion 101 is used to pivotally connect with the second body 20 so that the second body 20 can pivot relative to the first body 10 around the axis of the shaft portion 101.

[0068] The second body 20 includes a first shell 201 and a second shell 202. At least one of the two ends of the first shell 201 is provided with a first open hole H201. The first shell 201 and the second shell 202 can be combined in the pivot interface H10 and detachably connected. The first open hole H201 and the second shell 202 are combined to form a pivot hole, and the pivot hole is pivotally matched with the shaft portion 101. It should be understood that the first open hole H201 is a hole with an open side in the radial direction. When the first open hole H201 and the second shell 202 are combined, the open side of the first open hole H201 is opposite to and close to the second shell 202. The second shell 202 is used to close the open side of the first open hole H201, so that a closed pivot hole can be combined.

[0069] That is, the first shell 201 and the second shell 202 can be buckled and assembled together in the pivot opening. When the first shell 201 and the second shell 202 are buckled and assembled together, the first open hole H201 at one end of the first shell 201 and the first end of the second shell 202 are combined to form a complete pivot hole. And / or, the first open hole H201 at the other end of the first shell 201 and the other end of the second shell 202 are combined to form another complete pivot hole. The pivot hole corresponds to the shaft portion 101 on the first body 10, and the shaft portion 101 is pivotally connected to the pivot hole. In this way, the second body 20 can be pivotally connected to the pivot opening of the first body 10.

[0070] A hanging structure is provided between at least one of the rotating shaft portions 101 and the first shell portion 201, and the hanging structure is configured so that when the first shell portion 201 is assembled into the pivot interface H10 and rotated by a predetermined angle, the first shell portion 201 and the first main body 10 can be relatively fixed in the radial direction of the rotating shaft portion 101 and cannot be separated.

[0071] During the assembly process, the first shell 201 can be placed in the pivot interface H10, and the first open hole H201 can be rotated and matched with the shaft portion 101, and then the first shell 201 can be rotated by a predetermined angle. At this time, the hanging structure between the shaft portion 101 and the first shell 201 forms a hanging state. In the hanging state, the first shell 201 cannot move along the radial direction of the shaft portion 101, that is, the first shell 201 and the first body 10 are relatively fixed in the radial direction of the shaft portion 101. If the first shell 201 needs to be disassembled, the first shell 201 needs to be rotated in the opposite direction to restore it to the initial position. At this time, the hanging structure switches to a separation state, and the first shell 201 can be separated from the pivot interface H10 along the radial direction of the shaft portion 101. After the first shell 201 is assembled into the pivot interface H10 and fixed, the second shell 202 is assembled into the pivot interface H10 and connected and fixed with the first shell 201 by fasteners or the like. At this time, the first open hole H201 on the first shell portion 201 corresponds to and combines with the second shell portion 202 to form a pivot hole, and the pivot hole corresponds to and pivots with the shaft portion 101 to form a pivot fit, so that the first body 10 and the second body 20 can be completely assembled.

[0072] According to the pivot joint provided by the embodiment of the present invention, a hanging structure is provided between at least one of the two rotating shaft parts 101 and the first shell part 201. The hanging structure is configured so that when the first shell part 201 is combined into the pivot interface H10 and rotated by a predetermined angle, the first shell part 201 and the first main body 10 can be relatively fixed in the radial direction along the rotating shaft part 101 and cannot be separated. In this way, the pivot joint formed after the first main body 10 and the second main body 20 are assembled has a more reliable and stable structure and can adapt to the application scenario with a larger load. In addition, under the action of the hanging structure, the first shell part 201 and the first main body 10 cannot be separated and maintain a good combination state, so that the pivot joint is not easy to be damaged and has a longer service life. In addition, the rotation is also smoother and it is not easy to have problems such as shaking or loosening, thereby improving the quality of the product and the user experience.

[0073] It can be understood that, in some embodiments, the two opposite side walls both have the shaft portion 101. The first opening holes H202 are provided at both ends of the first shell portion 201, and the two first opening holes H201 and the two ends of the second shell portion 202 are respectively combined to form a pivot hole. The two pivot holes correspond to the two shaft portions 101 one by one and are pivotally matched, and the hanging structure is provided between each shaft portion 101 and the first shell portion 201. In this way, this symmetrically arranged structural design has better stability and reliability.

[0074] In addition, in some embodiments, at least one of the two ends of the second shell 201 is provided with a second open hole H202, and the second open hole H202 is combined with the corresponding first open hole H201 to form the pivot hole. That is to say, in these embodiments, the corresponding ends of the first shell 201 and the second shell 202 are both provided with open holes, and the two open holes are combined to form a complete pivot hole. For example, a semicircular hole is provided on the first shell 201, and another semicircular hole is provided on the second shell 202. The two semicircular holes are combined to form a circular pivot hole, and the pivot hole is pivotally matched with the shaft portion 101. This design can make the formed pivot hole have a higher adaptability with the shaft portion 101, thereby improving the smoothness and reliability of the pivot.

[0075] Reference Figures 2 to 6 As shown, in some embodiments of the present invention, the stop structure includes a stop edge 1011 and a stop foot 2011, wherein the stop edge 1011 is formed on the end surface of the free end of the shaft portion 101, and the free end is an end of the shaft portion 101 extending into the pivot hole. The stop edge 1011 is arranged on the end surface of the free end of the shaft portion 101, and the pivoting fit between the pivot hole and the shaft portion 101 is not affected.

[0076] The hanging foot 2011 is arranged inside the first shell body, and the hanging foot 2011 has a protrusion 2011a protruding toward the free end side of the rotating shaft portion 101; when the first shell body 201 is combined into the pivot interface H10 and rotated by a predetermined angle, the protrusion 2011a and the stop edge 1011 form a hanging state, so that the first shell body 201 and the first main body 10 are relatively fixed in the radial direction along the rotating shaft portion 101.

[0077] That is to say, when the first shell 201 is assembled into the pivot interface H10 and has not rotated, the protrusion 2011a and the stop edge 1011 are opposite to each other in the radial direction of the shaft 101, but are not in a hooking state. When the first shell 201 rotates by a predetermined angle, the protrusion 2011a rotates with the first shell 201 to a position where the protrusion 2011a and the stop edge 1011 are in a hooking state, for example, the stop edge 1011 is located between the protrusion 2011a and the first shell 201. At this time, the first shell 201 is fixed in the radial direction of the shaft 101 and cannot be separated from the shaft 101, thereby achieving the relative fixing of the first body 10 and the second body 20 in the radial direction.

[0078] In other words, in this embodiment, the design of the stop edge 1011 and the stop foot 2011 ensures that when the first shell 201 is assembled into the pivot interface H10, the stop foot 2011 and the stop edge 1011 do not immediately form a hooking state. Only when the first shell 201 is rotated to a predetermined angle, the protrusion 2011a of the stop foot 2011 will form a hooking state with the stop edge 1011. This design ensures a simple and smooth assembly process, and at the same time ensures that the first body 10 and the second body 20 are firmly assembled after assembly, thereby enhancing the stability of the entire pivot joint, enabling it to withstand a larger load and more frequent use, and also improving the safety and reliability of the product.

[0079] Preferably, the stopper edge 1011 extends circumferentially around the axis of the rotating shaft portion 101 to form an arc, and the surface where the protrusion 2011a contacts the stopper edge 1011 is formed as an arc surface. The stopper edge 1011 adopts an arc structure and extends circumferentially around the axis of the rotating shaft portion 101. This arc design increases the contact area between the stopper edge 1011 and the protrusion 2011a, providing a more stable hanging effect. In addition, this design also makes the relative rotation between the first body 10 and the rotating shaft portion 101 smoother, and prevents problems such as jamming caused by interference between the stopper edge 1011 and the protrusion 2011a.

[0080] Reference Figures 3 to 6 As shown, in some embodiments of the present invention, a plurality of positioning grooves H102 are provided on the end surface of the free end, and the plurality of positioning grooves H102 are arranged at intervals in the circumferential direction around the axis of the rotating shaft portion 101 at the free end.

[0081] The locking leg 2011 is elastic. When the second body 20 rotates, the protrusion 2011a rotates with the second body 20 and selectively engages with one of the plurality of positioning grooves H102 to limit the second body 20 to different positions.

[0082] In this embodiment, a plurality of positioning grooves H102 on the free end surface are combined with the protrusion 2011a on the hanging foot 2011 to form a limiting structure. When the second body 20 rotates, the protrusion 2011a on the hanging foot 2011 will rotate accordingly and selectively engage with different positioning grooves H102. The elastic design of the hanging foot 2011 ensures that the protrusion 2011a can smoothly enter and exit the positioning groove H102, while providing sufficient fixing force in the engaged state. In this way, the user can selectively fix the second body 20 at a desired angle position according to needs to meet the needs of different usage scenarios.

[0083] This multi-angle positioning design has broad application prospects in various application scenarios. Taking the sitting posture corrector as an example, this design allows the correction bracket 30 to be flexibly switched between the use state and the folded state. In the use state, the user can choose to rotate the correction bracket 30 to the vertical state above the desktop according to their own needs, thereby providing good support; and when not needed, the correction bracket 30 can be easily rotated to the bottom of the desktop and folded up, thus improving the practicality of the sitting posture corrector.

[0084] Of course, it is understandable that in addition to posture correctors, this design can also be applied to a variety of different products, such as electronic device stands, lamp stands, etc., allowing users to adjust the angle according to different working environments and personal preferences.

[0085] Reference Figures 6 to 9 As shown, in one embodiment of the present invention, one end of the hanging leg 2011 is connected to the inner wall of the first shell 201 , and preferably, the hanging leg 2011 and the first shell are integrally formed. The other end of the hanging leg 2011 extends toward one side of the second shell 202 .

[0086] The positioning groove H102 is a strip groove extending radially along the shaft portion 101 , and the protrusion 2011 a is formed as a strip portion adapted to the strip groove. The strip portion extends along the length direction of the hanging leg 2011 on the side of the hanging leg 2011 adjacent to the shaft portion 101 .

[0087] When the first shell portion 201 is assembled into the pivot interface H10 and rotated by a predetermined angle, one end of the strip portion adjacent to the first shell portion 201 forms the hooking state with the stop edge 1011 .

[0088] In this embodiment, the positioning groove H102 is designed as a strip groove extending radially along the rotating shaft portion 101, and the protruding portion 2011a is designed as a strip portion adapted to the strip groove. The strip design of the strip groove and the strip portion provides a larger contact area between the two, thereby enhancing the stability of positioning. In addition, the design of the strip groove extending radially also allows a certain degree of radial adjustment, thereby improving the fault tolerance and adaptability between the strip portion and the strip groove.

[0089] In addition, when the first shell 201 is assembled into the pivot interface H10 and rotated to a predetermined angle, the end of the strip portion adjacent to the first shell 201 will be in a hooking state with the stop edge 1011. In this way, it is ensured that the second body 20 and the first body 10 can achieve the best radial relative fixing effect at the desired position and angle.

[0090] Preferably, the cross-section of the strip portion is semicircular, triangular or trapezoidal, and the strip groove is adapted to the strip portion. The strip portion and the strip groove have a semicircular, triangular or trapezoidal interface, so that the strip portion can easily slide out and enter into another strip groove when the angle is adjusted by rotation, thereby improving the reliability of the angle adjustment of the second body 20.

[0091] Reference Figure 1 , Figure 4 , Figure 8 and Fig. 9 As shown, in one embodiment of the present invention, the pivot interface H10 is a U-shaped opening with one side open, and the stop edge 1011 is a semicircular arc portion. When the first shell portion 201 is combined into the pivot interface H10 and rotated 180°, the protrusion 2011a and the stop edge 1011 form the hanging state.

[0092] In this embodiment, the open design of the U-shaped opening allows the first shell 201 to be easily inserted from the side, simplifying the installation process, and the U-shaped opening provides three-sided surrounding restrictions. Compared with the traditional axial connection, this design can better limit the lateral movement of the first shell 201 and improve the stability of the overall structure. In addition, the design of the U-shaped opening allows the first shell 201 to rotate freely in a larger range, providing a guarantee for the versatility and adjustability of the application product.

[0093] Preferably, the outer peripheral surface of the rotating shaft portion 101 is provided with a circumferentially arranged neck groove H101, and the end wall of the first shell portion 201 and the end wall of the second shell portion 202 are clamped in the neck groove H101. The end walls of the first shell portion 201 and the second shell portion 202 are clamped into the neck groove H101, and the first open hole H201 is located at the end wall of the first shell portion 201, and the second open hole H202 is located at the end wall of the second shell portion 202, which can form a pivot connection with the groove. This structure significantly enhances the firmness of the connection and effectively prevents axial movement. In addition, the existence of the neck groove H101 provides a clear track for the rotation of the first shell portion 201 and the second shell portion 202, ensuring the stability and accuracy of the rotation process.

[0094] Reference Figure 10 to Figure 11 As shown, an embodiment of the present invention further provides a sitting posture correction device, comprising the pivot joint as described in the above embodiment, and a telescopic correction bracket 30. In this embodiment, the first body 10 is a desktop panel, and the pivot interface H10 is formed at the edge of the desktop panel. A sleeve portion is formed on the first shell portion 201. The telescopic correction bracket 30 is connected to the sleeve portion so as to be able to rotate relative to the desktop panel.

[0095] As described in the above embodiment, the end surface of the free end is provided with a plurality of positioning grooves H102, and the plurality of positioning grooves H102 are arranged at intervals on the free end around the axis of the rotating shaft portion 101. The locking foot 2011 is elastic, and when the second body 20 rotates, the protrusion 2011a rotates with the second body 20 and selectively engages with one of the plurality of positioning grooves H102 to limit the second body 20 to different positions.

[0096] The limiting structure is formed by combining a plurality of positioning grooves H102 on the free end surface with the protrusion 2011a on the hanging foot 2011. When the second body 20 rotates, the protrusion 2011a on the hanging foot 2011 will rotate accordingly and selectively engage with different positioning grooves H102. The elastic design of the hanging foot 2011 ensures that the protrusion 2011a can smoothly enter and exit the positioning groove H102, while providing sufficient fixing force in the engaged state. In this way, the user can selectively fix the telescopic correction bracket 30 at a desired angle position according to needs.

[0097] Preferably, the different positions include at least a first position and a second position. When the second body 20 is located at the first position, the telescopic corrective bracket 30 is located above the desktop panel and is substantially perpendicular to the desktop panel; when the telescopic corrective bracket 30 is located at the second position, the telescopic corrective bracket 30 is located below the desktop panel and forms a predetermined angle with the desktop panel.

[0098] When the sitting posture needs to be corrected, the telescopic correction bracket 30 is first rotated and erected, and the positioning groove H102 cooperates with the raised portion to make it in the first position. At this time, the telescopic correction bracket 30 is vertically arranged above the desktop board and is substantially perpendicular to the desktop, forming an effective barrier to prevent students from leaning forward and hunching over. When students sit at the desk to write or read, the telescopic correction bracket 30 can naturally limit the degree of forward leaning of the upper body, thereby achieving the purpose of correcting bad sitting posture.

[0099] When the correction function is not needed, the telescopic correction bracket 30 can be easily rotated to the second position and the positioning slot H102 cooperates with the protrusion. At this time, the telescopic correction bracket 30 will be stored under the desktop panel and present a certain preset angle with the desktop. It will not cause obstruction or blockage to the space above the desktop panel, thereby avoiding space occupation and visual interference in the vertical state.

[0100] The sitting posture correction device provided by the embodiment of the present invention has the above-mentioned pivot joint, so the structure is more reliable and stable, and can adapt to the support of the user's body in the sitting posture correction scenario. In addition, under the action of the hanging structure, the first shell 201 and the desktop panel cannot be separated, and a good combination state is maintained, so that the pivot joint is not easy to be damaged, has a longer service life, and improves the quality of the sitting posture correction device and the user experience.

[0101] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0102] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A pivot joint, characterized in that: include: A first body, wherein the first body has a pivot interface, the pivot interface has two opposite side walls, and at least one of the two opposite side walls has a rotating shaft portion; A second body, the second body comprising a first shell portion and a second shell portion, at least one of the two ends of the first shell portion being provided with a first open hole; the first shell portion and the second shell portion being capable of being assembled in the pivot interface and detachably connected, the first open hole and the second shell portion being assembled to form a pivot hole, the pivot hole being pivotally matched with the rotating shaft portion; Among them, a hanging structure is provided between at least one of the rotating shaft parts and the first shell part, and the hanging structure is constructed so that when the first shell part is combined into the pivot interface and rotated by a predetermined angle, the first shell part and the first main body can be relatively fixed in the radial direction of the rotating shaft part and cannot be separated.

2. The pivot joint according to claim 1, characterized in that The locking structure includes a stop edge and a locking foot, wherein the stop edge is formed on the end surface of the free end of the shaft portion, and the free end is an end of the shaft portion extending into the pivot hole; The hanging foot is arranged inside the first shell, and the hanging foot has a protrusion protruding toward one side of the free end of the rotating shaft; when the first shell is combined into the pivot interface and rotated by a predetermined angle, the protrusion and the stop edge form a hanging state, so that the first shell and the first main body are relatively fixed in the radial direction along the rotating shaft.

3. The pivot joint according to claim 2, characterized in that The stopper extends in a circumferential direction around the axis of the rotating shaft portion to form an arc shape, and the surface where the protrusion contacts the stopper is formed as an arc surface.

4. The pivot joint according to claim 2, characterized in that The end surface of the free end is provided with a plurality of positioning grooves, and the plurality of positioning grooves are arranged at intervals on the free end in the circumferential direction around the axis of the rotating shaft portion; The locking leg is elastic. When the second body rotates, the protrusion rotates with the second body and selectively engages with one of the plurality of positioning grooves to limit the second body to different positions.

5. The pivot joint according to claim 4, characterized in that One end of the hanging leg is connected to the inner wall of the first shell portion, and the other end of the hanging leg extends toward one side of the second shell portion; The positioning groove is a strip groove extending radially along the shaft portion, the protruding portion is formed as a strip portion adapted to the strip groove, and the strip portion extends along the length direction of the hanging leg on the side of the hanging leg adjacent to the shaft portion; When the first shell portion is assembled into the pivot interface and rotated by a predetermined angle, one end of the strip portion adjacent to the first shell portion forms the hooking state with the stop edge.

6. The pivot joint according to claim 2, characterized in that The pivot interface is a U-shaped opening with one side open, and the stop edge is a semicircular arc portion. When the first shell portion is assembled into the pivot interface and rotated 180°, the protrusion and the stop edge form the hanging state.

7. The pivot joint according to claim 5, characterized in that The cross section of the strip-shaped portion is semicircular, triangular or trapezoidal, and the strip-shaped groove is adapted to the strip-shaped portion.

8. The pivot joint according to claim 1, characterized in that The outer peripheral surface of the rotating shaft portion is provided with a neck groove which is circumferentially arranged, and the end wall of the first shell portion and the end wall of the second shell portion are clamped in the neck groove.

9. The pivot joint according to any one of claims 1 to 8, characterized in that The two opposite side walls each have the rotating shaft portion; The first opening holes are provided at both ends of the first shell portion, and the two first opening holes and the two ends of the second shell portion are respectively combined to form one pivot hole; The two pivot holes correspond to the two rotating shaft parts one by one and are pivotally matched, and the hanging structure is provided between each rotating shaft part and the first shell part.

10. The pivot joint according to claim 1, characterized in that At least one of the two ends of the second shell portion is provided with a second open hole, and the second open hole is combined with the corresponding first open hole to form the pivot hole.

11. A sitting posture correction device, characterized in that: include: The pivot joint according to any one of claims 1 to 10, wherein the first body is a desktop panel, the pivot interface is formed at an edge of the desktop panel; and a sleeve portion is formed on the first shell portion; A telescopic correction bracket, the lower end of which is connected to the sleeve portion so as to be rotatable relative to the desktop panel.

12. The sitting posture correction device according to claim 11, characterized in that: The different positions include at least a first position and a second position. When the second body is located at the first position, the correction bracket is located above the desktop panel and is substantially perpendicular to the desktop panel; when the correction bracket is located at the second position, the correction bracket is located below the desktop panel and forms a predetermined angle with the desktop panel.

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