A rotating connection mechanism, a rotating plate, and an office chair

Abstract

This utility model relates to the field of rotating mechanism technology, and discloses a rotating connection mechanism, a rotating plate, and an office chair, comprising: a rotating shaft, one end of which is fixedly connected to a rotating body; an axial limiting fitting part is provided on the circumference of the rotating shaft; a bushing, the bushing having a shaft hole, and the rotating shaft rotatably passing through the shaft hole; an axial limiting part is provided on the inner wall of the shaft hole; the axial limiting part and the axial limiting fitting part are fitted together, allowing them to rotate relative to each other in the circumferential direction; the bushing has radial elasticity at least in the area where the axial limiting part is located; a radial constraint member, the radial constraint member having radial elasticity, and the radial constraint member is sleeved on the outer circumferential wall of the bushing; the radial constraint member is adjacent to or located in the outer circumferential area of ​​the bushing corresponding to the axial limiting part. This utility model ensures that the rotating body rotates to a suitable angle by rotating the rotating shaft rotatably connected to the bushing; and that the rotating body is fixed at multiple angles by the radial constraint member sleeved on the outer circumference of the bushing.

Description

Technical Field

[0001] This utility model relates to the field of rotating mechanism technology, and more specifically, to a rotating connection mechanism, a rotating plate, and an office chair. Background Technology

[0002] Rotary connection mechanisms are common mechanical structures used in various rotating devices. Their core function is to enable relative rotation between two components while ensuring reliable connection in other directions, especially the axial direction. Such mechanisms are particularly common in the furniture industry, especially in the connection of rotating plates and shafts on rotating plates in office chairs.

[0003] In existing technologies, one common method for achieving axial constraint is to use a retaining ring (or circlip) to hold the bushing between the inner wall and the rotating shaft. Specifically, an annular groove is typically machined into the rotating shaft, and a standard retaining ring is inserted into the groove, engaging with the inner wall of the bushing to restrict axial movement. However, this traditional method of embedding the retaining ring within the bushing has several inherent drawbacks: the installation and removal of the retaining ring requires specialized tools (such as retaining ring pliers) and is difficult to perform within the confined space of the bushing.

[0004] Furthermore, existing rotating shelves have limited functionality, typically serving only as supports and for rotation. With modern office environments demanding higher space utilization and functional integration, users often need to place office items such as mobile phones, laptops, or tablets within easy reach. Traditional rotating shelves cannot provide this convenient storage functionality. Utility Model Content

[0005] To address at least one of the aforementioned problems, this utility model first provides a rotating connection mechanism, a rotating plate, and an office chair, comprising: a rotating shaft, one end of which is fixedly connected to a rotating body; an axial limiting fitting portion provided on the circumferential side of the rotating shaft; a bushing, the bushing having a shaft hole, and the rotating shaft rotatably passing through the shaft hole; an axial limiting portion provided on the inner wall of the shaft hole; the axial limiting portion and the axial limiting fitting portion engaging with each other to form an axial constraint, and allowing both to rotate relative to each other in the circumferential direction; the bushing having radial elasticity at least in the region where the axial limiting portion is located, to allow the axial limiting fitting portion of the rotating shaft to assemble with the axial limiting portion; a radial constraint member, the radial constraint member having radial elasticity, and the radial constraint member being sleeved on the outer circumferential wall of the bushing; the radial constraint member being adjacent to or located in the outer circumferential region of the bushing corresponding to the axial limiting portion, to apply a continuous radial contraction force to the axial limiting portion, so that the axial limiting fitting portion and the axial limiting portion remain in a tightly engaged state.

[0006] Optionally, the axial limiting fitting part is an annular groove opened circumferentially along the rotation axis; the axial limiting part is an annular protrusion opened circumferentially along the inner wall of the shaft hole.

[0007] Optionally, an annular mounting groove is formed on the outer periphery of the bushing corresponding to the axial limiting part; the radial constraint member is sleeved in the annular mounting groove. The bushing has several open slots; the two ends of the open slots respectively penetrate the annular mounting groove and the end of the bushing near the annular mounting groove.

[0008] Optionally, the bushing has a plurality of through grooves on its circumference; one side wall of the through groove is fixed with an elastic protrusion that can move radially along the bushing; and the rotating shaft has a groove corresponding to the elastic protrusion on its circumference.

[0009] Optionally, the end of the bushing away from the axial limiting portion protrudes radially outward to form a radial boss; a first mounting plate for supporting the bushing is provided below the radial boss; the first mounting plate is fixedly installed to the support body.

[0010] Optionally, a sleeve is fitted on the outer peripheral wall of the bushing; one end of the sleeve is provided with an annular groove; the first mounting plate is fixed to the annular groove, and the first mounting plate abuts against the bottom surface of the radial boss.

[0011] Optionally, a plurality of circumferentially distributed arc-shaped elastic blocks are coaxially arranged on the top of the radial boss; a second mounting plate is engaged with the periphery of the arc-shaped elastic blocks; the support body is fixed below the second mounting plate; wherein, the outer peripheral wall of the arc-shaped elastic block protrudes outward along its radial direction to form a radial protrusion; wherein, the second mounting plate is provided with an assembly groove that mates with the arc-shaped elastic block; the opening of the assembly groove is provided with a guide arc surface to engage with the radial protrusion.

[0012] Optionally, the rotating body has a through hole for the rotating shaft to pass through; a stop block is detachably connected to one end of the rotating shaft near the rotating body; a threaded hole is formed in the center of the stop block; a threaded section is formed at the end of the rotating shaft near the stop block; the threaded section is threadedly connected to the threaded hole, thereby fixing the stop block to the rotating shaft; the radial dimension of the stop block is larger than the diameter of the through hole, so as to form an axial limit on the rotating shaft; the rotating body is provided with an axial limiting plate; the axial limiting plate at least partially abuts against the top surface of the stop block, so as to fix the rotating body to the rotating shaft.

[0013] Compared to existing technologies, this utility model uses a rotating shaft rotatably connected to the bushing to ensure that the rotating body rotates to a suitable angle, thereby allowing the user to easily pick up or use items on the rotating body; a radial constraint member is sleeved on the outer circumference of the bushing for easy installation, and also provides a certain frictional force between the rotating shaft and the bushing when they rotate relative to each other, so that the rotating body is fixed at multiple angles and will not wobble; the rotating body and the stop block are detachably connected, allowing for easy assembly and disassembly of both.

[0014] This utility model also provides a rotating plate, including the above-mentioned rotating connection mechanism. The rotating plate also has the beneficial effects achieved by the above-mentioned rotating connection mechanism, which will not be described in detail here. The rotating body is a rotating plate. The rotating body also includes an upper cover and a lower cover. The upper cover and the lower cover are detachably connected. A guide groove is provided on one side of the lower cover. A placement part is slidably connected in the guide groove. A guide slider is provided on the placement part and is slidably connected to the guide groove.

[0015] This utility model also provides an office chair, including the aforementioned rotating plate. The office chair also has the beneficial effects achieved by the aforementioned rotating connection mechanism, which will not be described in detail here. Attached Figure Description

[0016] Figure 1 This is a structural diagram of the rotary connection mechanism in this utility model;

[0017] Figure 2 for Figure 1 A bottom view;

[0018] Figure 3 for Figure 2 Schematic diagram of the cross section at point BB;

[0019] Figure 4 for Figure 3 A magnified view of a portion of point A in the middle;

[0020] Figure 5 for Figure 3 A magnified view of a portion of point C in the middle;

[0021] Figure 6 This is a schematic diagram of the through hole in this utility model;

[0022] Figure 7 This is a structural diagram of the axial limiting plate in this utility model;

[0023] Figure 8 This is a structural diagram of the stop block of this utility model;

[0024] Figure 9 This is a structural diagram of the rotating shaft in this utility model;

[0025] Figure 10 This is a schematic diagram of the structure of the bushing of this utility model;

[0026] Figure 11 This is a schematic diagram of the structure of the bushing, rotating shaft and radial constraint member of this utility model;

[0027] Figure 12 This is a schematic diagram of the structure of the second mounting plate in this utility model;

[0028] Figure 13 This is a schematic diagram of the rotating plate in this utility model;

[0029] Figure 14 This is a schematic diagram of the guide slider in this utility model.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1-Rotating shaft; 2-Shaft sleeve; 3-Radial constraint component; 4-Rotating body; 5-Tube sleeve; 101-Axial limiting mating part; 102-Stop block; 201-Shaft hole; 202-Axial limiting part; 203-Annular mounting groove; 204-Opening groove; 205-Radial boss; 206-First mounting plate; 207-Arc-shaped elastic block; 208-Second mounting plate; 401-Upper cover; 402-Lower cover; 403-Guide groove; 404-Placement part; 405-Guide slider; 406-Through hole; 407-Axial limiting plate; 501-Annular groove; 1021-Threaded hole; 1022-Threaded section; 2011-Through groove; 2012-Elastic protrusion; 2013-Slot; 2071-Radial protrusion; 2081-Assembly groove; 2082-Guide arc surface. Detailed Implementation

[0032] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0033] In the description of this utility model, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship when the product is in normal use.

[0034] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature.

[0035] Example 1

[0036] This utility model provides a rotary connection mechanism, mainly used to connect two objects, allowing the two objects to rotate relative to each other, such as a rotary connection between two plates or a rotary connection between two supports. This embodiment mainly uses a rotating plate as an example. Please refer to [link / reference]. Figure 1-12As shown, the rotating connection mechanism includes: a rotating shaft 1, one end of which is fixedly connected to a rotating body 4. The rotating body 4 mainly serves as a support plate, and items such as laptops, tablets, books, teacups, or other office supplies can be placed on its surface; an axial limiting fitting part 101 is provided around the rotating shaft 1; a bushing 2, which has a shaft hole 201, and the rotating shaft 1 is rotatably inserted into the shaft hole 201, allowing the rotating body 4 to rotate to a suitable angle for easy access to or use of items on the surface of the rotating body 4; an axial limiting part 202 is provided on the inner wall of the shaft hole 201; the axial limiting part 202 and the axial limiting fitting part 101 are fitted together to form an axial constraint and allow the two to rotate relative to each other in the circumferential direction, thus preventing the rotating shaft 1 from disengaging downward from the bushing 2, while ensuring that the rotating shaft 1 can rotate within the bushing 2, and fixing the rotating body 4 at any angle; the bushing 2 has radial elasticity at least in the area where the axial limiting part 202 is located, to allow the axial movement of the rotating shaft 1... The limiting fitting part 101 is assembled with the axial limiting part 202. That is, the area where the axial limiting part 202 is located can be made of elastic material. During assembly, the rotating shaft 1 is inserted from the upper end of the bushing 2. As the rotating shaft 1 passes through the axial limiting part 202, it expands the axial limiting part 202 until the axial limiting fitting part 101 is engaged within the axial limiting part 202, completing the assembly. The radial constraint member 3 has radial elasticity and is fitted onto the outer peripheral wall of the bushing 2. The radial constraint member 3 is a circular elastic element. The components include, but are not limited to, snap rings, elastic rubber rings, etc.; the radial constraint component 3 is adjacent to or located in the outer peripheral area of ​​the bushing 2 corresponding to the axial limiting part 202, so as to apply a continuous radial contraction force to the axial limiting part 202, so that the axial limiting fitting part 101 and the axial limiting part 202 are kept in a tight fit. This setting has two functions: first, to prevent the rotating shaft 1 from disengaging from the bushing 2; second, to make the rotating shaft 1 have friction when rotating in the bushing 2, so that the rotating shaft 1 can be relatively fixed at a certain angle.

[0037] Regarding the axial limiting fitting part 101 and the axial limiting part 202: as follows Figure 5 As shown, the axial limiting fitting part 101 is an annular groove opened circumferentially along the rotation axis 1, and the inner wall of the annular groove is a smooth curved surface; the axial limiting part 202 is an annular protrusion opened circumferentially along the inner wall of the shaft hole 201, and the surface of the annular protrusion is a smooth curved surface structure to reduce friction; the annular groove and the annular protrusion fit together to form an axial constraint and allow the two to rotate relative to each other in the circumferential direction; of course, the axial limiting fitting part 101 can also be an annular protrusion structure and the axial limiting part 202 can be an annular groove structure.

[0038] Regarding the installation of radial constraint member 3: as follows Figure 10As shown, an annular mounting groove 203 is provided on the outer periphery of the bushing 2 corresponding to the axial limiting part 202; the radial constraint member 3 is sleeved in the annular mounting groove 203 so that the radial constraint member 3 is stably fixed on the outer periphery of the bushing 2, so that the radial constraint member 3 continuously provides a radially inward force to the bushing 2, thereby keeping the axial limiting mating part 101 and the axial limiting part 202 in a tight fit.

[0039] Example 2

[0040] Based on the above embodiment, the bushing 2 has several through grooves 2011 on its circumference; one side wall of the through groove 2011 is fixed with an elastic protrusion 2012 that can move radially along the bushing 2; the rotating shaft 1 has a slot 2013 corresponding to the elastic protrusion 2012 on its circumference; such as Figure 11 As shown, the bushing 2 has several open slots 204, the opening width of which is set as needed. The two ends of the open slots 204 pass through the annular mounting groove 203 and the end of the bushing 2 near the annular mounting groove 203, respectively. Before assembling the rotating shaft 1 with the bushing 2, the radial constraint member 3 should not be installed. Because of the open slots 204, when the rotating shaft 1 is inserted into the axial limiting part 202 inside the bushing 2, the axial limiting part 202 of the bushing 2 is easily opened, making it easier to assemble the axial limiting mating part 101 and the axial limiting part 202. After assembly, the radial constraint member 3 is installed to tighten the axial limiting mating part 101 and the axial limiting part 202. In addition, a narrowing can be formed at the end of the bushing 2 near the open slots 204 to facilitate the radial constraint member 3 to be inserted upward into the annular mounting groove 203 from there, serving as a guide.

[0041] Example 3

[0042] Based on the above embodiments, such as Figure 11 As shown, the end of the bushing 2 away from the axial limiting part 202 protrudes radially outward to form a radial boss 205; a first mounting plate 206 for supporting the bushing 2 is provided below the radial boss 205; the first mounting plate 206 is fixedly installed to the support body, specifically the surface of the first mounting plate 206 is provided with multiple mounting holes, fasteners such as bolts and nuts or fastening screws are screwed into the support body, thereby fixing the support body and the first mounting plate 206; at the same time, since the radial boss 205 cooperates with the first mounting plate 206, the first mounting plate 206 supports the bushing 2 and the rotating shaft 1.

[0043] like Figure 11 As shown, a sleeve 5 is fitted on the outer peripheral wall of the bushing 2; one end of the sleeve 5 is provided with an annular groove 501; the first mounting plate 206 is fixed to the annular groove 501 by welding, and the first mounting plate 206 abuts against the bottom surface of the radial boss 205.

[0044] like Figure 10 As shown, a plurality of circumferentially distributed arc-shaped elastic blocks 207 are coaxially arranged on the top of the radial boss 205; a second mounting plate 208 is snapped onto the periphery of the arc-shaped elastic blocks 207; the support body is fixed below the second mounting plate 208; wherein, the outer peripheral wall of the arc-shaped elastic block 207 protrudes outward along its radial direction to form a radial protrusion 2071, which facilitates the installation and fixation of the second mounting plate 208 and the bushing 2. The connection by snapping is convenient for disassembly and assembly, and the second mounting plate 208 serves a decorative function; wherein, the second mounting plate 208 is provided with an assembly groove 2081 that mates with the arc-shaped elastic block 207; the opening of the assembly groove 2081 is provided with a guide arc surface 2082 to snap onto the radial protrusion 2071, and the guide arc surface 2082 guides the arc-shaped elastic block 207, thereby installing and fixing the second mounting plate 208 and the bushing 2.

[0045] Example 4

[0046] Based on the above embodiments, such as Figure 6 As shown, the rotating body 4 has a through hole 406 for the rotating shaft 1 to pass through; a stop block 102 is detachably connected to one end of the rotating shaft 1 near the rotating body 4. The stop block 102 may be designed as a square or cylindrical shape, etc.; a threaded hole 1021 is provided in the center of the stop block 102; a threaded section 1022 is provided at the end of the rotating shaft 1 near the stop block 102; the threaded section 1022 is threadedly connected to the threaded hole 1021, thereby fixing the stop block 102 to the rotating shaft 1. Here, the stop block 102 can preferably be designed as a cylindrical shape. The shape of the stop block 102 makes it easier to operate when it is rotated onto the threaded section 1022 of the rotating shaft 1. The radial dimension of the stop block 102 is larger than the diameter of the through hole 406 to form an axial limit on the rotating shaft 1. Here, when the stop block 102 is designed as a column, that is, the diameter of the stop block 102 is larger than the diameter of the through hole 406. The rotating body 4 is provided with an axial limiting plate 407. The axial limiting plate 407 at least partially abuts against the top surface of the stop block 102 to fix the rotating body 4 and the rotating shaft 1. This design is mainly for the convenience of disassembly and assembly.

[0047] Example 5

[0048] Based on any of the above embodiments, this utility model also provides a rotating plate, please refer to [link / reference]. Figure 13-14As shown, the rotating connection mechanism described above is included; the rotating body 4 is a rotating plate; the rotating body 4 also includes an upper cover 401 and a lower cover 402; the upper cover 401 and the lower cover 402 are detachably connected, for example, by providing multiple snap-fit ​​grooves on the inner peripheral wall of the upper cover 401 and snap-fit ​​blocks at corresponding positions on the lower cover 402, thus achieving a detachable connection between the upper cover 401 and the lower cover 402; wherein, a guide groove 403, such as a T-shaped groove, is provided on one side of the lower cover 402; the guide groove 403 provides a sliding connection. The storage section 404 has a shape that can be set as needed, including but not limited to a lid, box or other container, for placing items such as teacups; the storage section 404 is provided with a guide slider 405 that is slidably connected to the guide slide 403, for example, the guide slider 405 is a T-shaped block, which can realize the sliding connection between the two and realize the storage of the storage section 404; the surface of the rotating body 4 can also be provided with a strip groove, which can place some long strip objects, and they are not easy to fall off when the rotating body 4 rotates.

[0049] Example 6

[0050] Based on the above embodiments, this utility model also provides an office chair, including the aforementioned rotating plate; the supporting body is an office chair, specifically, the rotating plate is fixed to the armrest of the office chair by a first mounting plate 206 and a second mounting plate 208; a laptop or books are placed on the rotating plate, and when people need to use it, they can rotate the rotating plate to a comfortable angle to facilitate use.

[0051] Although the disclosure is as stated above, the scope of protection of this disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the protection scope of this utility model.

Claims

1. A rotary connection mechanism, characterized in that, include: A rotating shaft (1) is fixedly connected at one end to a rotating body (4); the rotating shaft (1) is provided with an axial limiting fitting part (101) on its circumference. A bushing (2) is provided with a shaft hole (201), and the rotating shaft (1) is rotatably inserted into the shaft hole (201); the inner wall of the shaft hole (201) is provided with an axial limiting part (202); the axial limiting part (202) and the axial limiting fitting part (101) are fitted together to form an axial constraint and allow the two to rotate relative to each other in the circumferential direction; the bushing (2) has radial elasticity at least in the area where the axial limiting part (202) is located, so as to allow the axial limiting fitting part (101) of the rotating shaft (1) to be assembled with the axial limiting part (202); A radial constraint member (3) has radial elasticity and is fitted onto the outer peripheral wall of the bushing (2); the radial constraint member (3) is adjacent to or located in the outer peripheral region of the bushing (2) corresponding to the axial limiting part (202) to apply a continuous radial contraction force to the axial limiting part (202) so that the axial limiting fitting part (101) and the axial limiting part (202) remain in a tight fit.

2. The rotary connection mechanism according to claim 1, characterized in that, The axial limiting fitting part (101) is an annular groove opened circumferentially along the rotation axis (1); the axial limiting part (202) is an annular protrusion opened circumferentially along the inner wall of the shaft hole (201).

3. The rotary connection mechanism according to claim 1, characterized in that, The axial limiting part (202) has an annular mounting groove (203) on its outer periphery; the radial constraint member (3) is fitted into the annular mounting groove (203); The bushing (2) is provided with a plurality of open slots (204); the two ends of the open slots (204) respectively penetrate the annular mounting groove (203) and the end of the bushing (2) near the annular mounting groove (203).

4. The rotary connection mechanism according to claim 1, characterized in that, The bushing (2) has several through grooves (2011) on its circumference; one side wall of the through groove (2011) is fixed with an elastic protrusion (2012) that can move radially along the bushing (2); the rotating shaft (1) has a slot (2013) corresponding to the elastic protrusion (2012) on its circumference.

5. A rotary connection mechanism according to claim 1, characterized in that, The end of the bushing (2) away from the axial limiting part (202) protrudes outward in a radial direction to form a radial boss (205); a first mounting plate (206) for supporting the bushing (2) is provided below the radial boss (205); the first mounting plate (206) is fixedly installed to the support body.

6. A rotary connection mechanism according to claim 5, characterized in that, The bushing (2) is fitted with a tube sleeve (5) on its outer peripheral wall; one end of the tube sleeve (5) is provided with an annular groove (501); the first mounting plate (206) is fixed to the annular groove (501), and the first mounting plate (206) abuts against the bottom surface of the radial boss (205).

7. A rotary connection mechanism according to claim 5, characterized in that, The radial boss (205) is coaxially provided with a plurality of circumferentially distributed arc-shaped elastic blocks (207) on its top; a second mounting plate (208) is snapped onto the periphery of the arc-shaped elastic blocks (207); the support body is fixed below the second mounting plate (208); wherein, the outer peripheral wall of the arc-shaped elastic block (207) protrudes outward along its radial direction to form a radial protrusion (2071); wherein, the second mounting plate (208) is provided with an assembly groove (2081) that mates with the arc-shaped elastic block (207); the opening of the assembly groove (2081) is provided with a guide arc surface (2082) to snap onto the radial protrusion (2071).

8. A rotary connection mechanism according to claim 1, characterized in that, The rotating body (4) has a through hole (406) through which the rotating shaft (1) passes; a stop block (102) is detachably connected to one end of the rotating shaft (1) near the rotating body (4); the radial dimension of the stop block (102) is larger than the diameter of the through hole (406) to axially limit the rotating shaft (1); the rotating body (4) is provided with an axial limiting plate (407); the axial limiting plate (407) at least partially abuts against the top surface of the stop block (102) to fix the rotating body (4) and the rotating shaft (1).

9. A rotating plate, characterized in that, Includes the rotary connection mechanism as described in any one of claims 1-8; the rotary body (4) is a rotary plate; the rotary body (4) further includes an upper cover (401) and a lower cover (402); the upper cover (401) and the lower cover (402) are detachably connected; The lower cover (402) has a guide groove (403) on one side; a storage part (404) is slidably connected in the guide groove (403); and a guide slider (405) is provided on the storage part (404) and is slidably connected to the guide groove (403).

10. An office chair, characterized in that, Includes the rotating plate as described in claim 9.

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