Armrest rotation adjusting mechanism and seat
By connecting a detachable limit cap and a button to the rotating base, the structure of the handrail rotation adjustment mechanism is simplified, solving the problems of cumbersome assembly and difficult maintenance in the existing technology, and realizing convenient assembly and maintenance.
Patent Information
- Application Number
- CN202520723470.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-16
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-04-16
AI Technical Summary
Existing seat armrests have complex structures, are cumbersome to assemble, and are difficult to repair or replace when damaged.
The design incorporates a detachable limit cap and a button combination, allowing the rotating seat to be unlocked or locked via the button. This simplifies the structure of the handrail rotation adjustment mechanism and facilitates assembly and maintenance.
This invention simplifies the assembly of the handrail rotation adjustment mechanism, improves assembly efficiency, and facilitates later maintenance and component replacement.
Smart Images
Figure CN223873593U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of seat, especially handrail rotation adjusting mechanism and seat. BACKGROUND
[0002] The handrails on the left and right sides of the existing office chair or ergonomic chair are mostly directly fixed on the chair, the handrails can support human arms and provide comfortable support feeling, but the fixed connection mode also makes the handrails easily interfere with the table when the seat is stored under the table.
[0003] Some seats set the handrails as rotating structure, the handrails can rotate forward and backward to adjust the position when the seat is stored, preventing the handrails from interfering with the table, for example, the handrail structure patent with the announcement number CN221931635, the first connecting part is arranged at the lower end of the handrail body, the second connecting part is arranged on the mounting seat, the first connecting part and the second connecting part are rotationally connected, the first mounting position and the second mounting position are arranged on the inner ring surface of the second connecting part, the clamping piece is mounted on the first mounting position, the clamping piece can form interference fit with the first connecting part and the second connecting part, so that the connection is more compact, the button is arranged on the second mounting position, the first limiting structure is arranged on the cylindrical outer end surface of the first connecting part, and the first limiting structure is located in the first limiting groove; the vertical surface of the button limits the rotation of the fan-shaped boss, so that the handrail is kept locked; when the handrail needs to be unlocked, the vertical surface of the button is separated from the fan-shaped boss, at this time, the handrail body can be rotated, but the design has many deficiencies.
[0004] In the handrail structure, the first limiting groove is arranged on the outer end surface of the second connecting part, the protruding first limiting structure needs to pass through the first mounting position first, then the first limiting structure is matched with the first limiting groove, and then the clamping piece is interference fitted on the first mounting position, so that the whole structure design is relatively complex, and the assembly process is relatively cumbersome.
[0005] The clamping piece is interference fitted with the first connecting part and the second connecting part, when the parts or structures between the first connecting part and the second connecting part are damaged, the interference fitted clamping piece is difficult to be disassembled, so that the first connecting part is difficult to be separated from the second connecting part, and the later maintenance or replacement of the structure or parts inside the mechanism is affected. SUMMARY
[0006] The utility model provides a kind of handrail rotation adjusting mechanism and seat, by connecting detachable limit cap body on the rotating support part matched with rotating seat, and button is arranged between limit cap body and rotating seat to control the unlocking or locking of rotating seat, simplify the structure of handrail rotation adjusting mechanism, improve assembly efficiency, facilitate the structure or parts inside mechanism to carry out later maintenance or replacement.
[0007] The technical scheme of the utility model is realized as follows:
[0008] The armrest rotating adjusting mechanism comprises a rotating base connected with an armrest, a connecting base connected with a seat, a rotating support part provided on the connecting base, a rotating shaft hole provided through the rotating base and matched with the rotating support part, the rotating support part being inserted into the rotating shaft hole so that the rotating base can rotate relative to the connecting base, an adjusting assembly provided between the rotating support part and the rotating base, the adjusting assembly comprising a limiting cap body detachably connected to an outer end of the rotating support part, the limiting cap body being provided with a limiting groove, a button provided between the limiting cap body and the rotating base and elastically stretchable along an axis direction of the rotating base, and a limiting part provided on the button and corresponding to the limiting groove.
[0009] The rotating base has a locked state and an unlocked state; when the rotating base is in the locked state, the limiting part is in the limiting groove to limit the rotation of the rotating base; an external force presses the button and elastically retracts the button, at this time, the limiting part is out of the limiting groove, the rotating base can rotate freely and the limiting part is misaligned with the limiting groove, at this time, the rotating base is switched to the unlocked state; when the rotating base reversely rotates and returns to the initial position, the limiting part is again positionally corresponding to the limiting groove, at this time, the button elastically extends and makes the limiting part enter the limiting groove again, so that the rotating base is switched back to the unlocked state.
[0010] As a preferred, a spring acting on the button is further included, when the button is pressed by an external force, the spring elastically deforms to store elastic force, when the rotating base rotates and the limiting part is positionally corresponding to the limiting groove, the spring releases the elastic force to promote the limiting part to return and enter the limiting groove; during operation, the button can be pressed to unlock the armrest, and when returning, the limiting part will be automatically clamped into the limiting groove, so that the operation is simple and convenient.
[0011] As a preferred, the rotating base is provided with a containing groove corresponding to the limiting part in position, and the spring is a compression spring provided in the containing groove and acting on the limiting part.
[0012] As a preferred, the outer end of the rotating support part is provided with a screw hole, the limiting cap body is provided with a through hole corresponding to the screw hole, a screw passes through the through hole and is screwed into the screw hole to lock the limiting cap body and the rotating support part.
[0013] As a preferred, the outer end of the rotating base is provided with a mounting hole concentric with the rotating shaft hole and used for containing the limiting cap body, the diameter of the mounting hole is greater than the diameter of the rotating shaft hole, and a step surface is further formed at the junction of the mounting hole and the rotating shaft hole, and the limiting cap body is in abutment with the step surface; so as to limit the rotating base from being separated from the connecting base along the axial direction.
[0014] As a preferred, the outer end of the rotating base is provided with a cover shielding the limiting cap body, the cover is detachably connected to the rotating base or the limiting cap body; so as to shield the limiting cap body and ensure that the appearance of the armrest adjusting mechanism is simple and concise.
[0015] Preferably, the connecting base is provided with a limiting groove extending along the circumferential direction of the rotating base, the limiting groove has two limiting ends, the rotating base is provided with a limiting protrusion at one end thereof, the limiting protrusion is inserted into the limiting groove to limit the rotating range of the rotating base between the two limiting ends; the rotating angle of the rotating base is prevented from being too large in the unlocked state.
[0016] Preferably, the button comprises a pressing part exposed at the outer end of the rotating base, and the limiting part is integrally formed with the pressing part; the rotating base is provided with a guide groove matched with the pressing part, and the pressing part is slidingly connected in the guide groove; the activity track of the button is guided to prevent the button from deviating from the predetermined position when being pressed.
[0017] Preferably, the button comprises a pressing part exposed at the outer end of the rotating base and integrally formed with the limiting part, the outer end of the pressing part is outwardly bent and formed with a pressing surface for increasing the pressing area; the pressing feeling of the operator is avoided when pressing the button.
[0018] A seat comprising the armrest rotating adjusting mechanism.
[0019] The armrest rotating adjusting mechanism has the following beneficial effects:
[0020] The armrest rotating adjusting mechanism has the following beneficial effects: BRIEF DESCRIPTION OF DRAWINGS
[0021] Figure 1 Fig. 4 is a schematic view of the armrest rotating adjusting mechanism in the locked state when the button is not pressed;
[0022] Figure 2 Fig. 5 is an exploded view of the armrest rotating adjusting mechanism;
[0023] Figure 3 Fig. 6 is an exploded view of the armrest rotating adjusting mechanism at another angle;
[0024] Figure 4 Fig. 7 is a sectional view of the armrest rotating adjusting mechanism when the button is not pressed;
[0025] Figure 5 Fig. 8 is a structural schematic view of the armrest rotating adjusting mechanism after the protective cover is removed;
[0026] Figure 6 Fig. 4 is a schematic view of the armrest rotating adjusting mechanism in the locked state when the button is not pressed;
[0027] Figure 7 This is a cross-sectional view of the armrest rotation adjustment mechanism after the button is pressed.
[0028] Figure 8 This is a schematic diagram showing the handrail rotating backward from a horizontal position to an inclined position;
[0029] The reference numerals in the attached drawings are as follows: 1-connecting seat, 2-rotating seat, 3-limiting cap, 4-button, 5-compression spring, 6-cover, 11-rotating support, 12-screw hole, 13-strip positioning groove, 14-limiting groove, 21-rotating shaft hole, 22-accommodating groove, 23-mounting hole, 24-step surface, 25-limiting protrusion, 31-limiting groove, 32-strip positioning part, 33-through hole, 34-insertion hole, 41-limiting part, 42-pressing part, 43-pressing surface, 44-slot, 61-insertion part, 221-guide groove. Detailed Implementation
[0030] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0031] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.
[0032] The specific embodiments of this utility model are as follows:
[0033] like Figures 1-8 As shown, this embodiment provides an armrest rotation adjustment mechanism, including a rotating seat 2 for connecting to the armrest and a connecting seat 1 for connecting to the seat. The connecting seat 1 is provided with a rotating support part 11, and the rotating seat 2 is provided with a rotating shaft hole 21 that matches the rotating support part 11. The rotating support part 11 is inserted into the rotating shaft hole 21, so that the rotating seat 2 can rotate relative to the connecting seat 1. An adjustment assembly is provided between the rotating support part 11 and the rotating seat 2. The adjustment assembly includes a limiting cap 3 that is detachably connected to the outer end of the rotating support part 11. The limiting cap 3 can play an axial positioning role to prevent the rotating seat 2 from separating from the connecting seat 1 along the axial direction. The limiting cap 3 is provided with a limiting groove 31. The limiting groove 31 can be a through groove or a non-through groove.
[0034] A button 4 that can elastically extend and retract along the axis of rotation of the rotating seat 2 is provided between the limiting cap 3 and the rotating seat 2. The button 4 is provided with a limiting part 41 corresponding to the position of the limiting groove 31.
[0035] The rotating seat 2 has a locked state and an unlocked state. When the rotating seat 2 is in the locked state, the limiting part 41 is in the limiting groove 31 to restrict the rotation of the rotating seat 2. In this embodiment, in the locked state, the armrest connected to the rotating seat 2 maintains a horizontal support state. When an external force presses and the button 4 retracts elastically, the limiting part 41 disengages from the limiting groove 31, and the rotating seat 2 can rotate freely and the limiting part 41 is misaligned with the limiting groove 31. At this time, the rotating seat 2 switches to the unlocked state. In this embodiment, in the unlocked state, the armrest connected to the rotating seat 2 can rotate backward to avoid interference between the armrest and the table. When the rotating seat 2 rotates in the opposite direction and returns to the initial position, the armrest maintains a horizontal support state again, and the limiting part 41 and the limiting groove 31 are aligned again. At this time, the button 4 extends elastically and the limiting part 41 re-enters the limiting groove 31, causing the rotating seat 2 to switch back to the unlocked state.
[0036] Furthermore, such as Figures 2-3 As shown, for ease of operation, the handrail rotation adjustment mechanism also includes an elastic element acting on the button 4. When the button 4 is pressed by external force, the limiting part 41 is misaligned with the limiting groove 31, and the elastic element undergoes elastic deformation to store elastic force. At this time, the rotating seat 2 rotates, and the limiting part 41 contacts the inner end face of the limiting cap 3 under the action of the elastic element. When the rotating seat 2 rotates and the limiting part 41 aligns with the limiting groove 31, the elastic element releases the elastic force to cause the limiting part 41 to reset and enter the limiting groove 31. During operation, pressing the button can unlock the handrail, and when resetting, the limiting part 41 will automatically engage with the limiting groove 31. The operation is simple and convenient.
[0037] Furthermore, the structure of the elastic element is diverse. In this embodiment, the elastic element is a compression spring 5. Specifically, the rotating seat 2 is provided with a receiving groove 22 corresponding to the position of the limiting part 41. The elastic element is a compression spring 5 disposed in the receiving groove 22 and acting on the limiting part 41. To prevent the compression spring 5 from bending and deforming, the end of the button 4 facing the receiving groove 22 is provided with a recessed slot 44. One end of the compression spring 5 is inserted into the slot 44 to ensure that it will deform along the direction of movement of the button 4 when subjected to force without bending.
[0038] Furthermore, the detachable limiting cap 3 is easy to disassemble and assemble, improving assembly efficiency and facilitating the maintenance and replacement of components later. The limiting cap 3 can be detached in various ways, such as snap-fit connection or screw connection. In this embodiment, the limiting cap 3 is connected to the rotating support part 11 by screw connection. Specifically, the outer end of the rotating support part 11 is provided with a screw hole 12, and the limiting cap 3 is provided with a through hole 33 corresponding to the screw hole 12. The screw passes through the through hole 33 and is screwed into the screw hole 12 to lock the limiting cap 3 and the rotating support part 11.
[0039] Further, in order to facilitate assembly, the limiting cap body 3 and the rotating support part 11 are provided with a positioning structure, which comprises a strip-shaped positioning part 32 provided on the limiting cap body 3 and protruding, and a strip-shaped positioning groove 13 provided on the rotating support part 11, the strip-shaped positioning part 32 is inserted into the strip-shaped positioning groove 13, so that the screw hole 12 and the through hole 33 are quickly aligned, and the limiting cap body 3 can be quickly assembled to the rotating support part 11.
[0040] Further, in order to axially position the rotating seat 2 while the limiting cap body 3 does not protrude out of the rotating seat 2, the outer end of the rotating seat 2 is provided with a mounting hole 23 concentric with the rotating shaft hole 21 and used for accommodating the limiting cap body 3, the diameter of the mounting hole 23 is greater than that of the rotating shaft hole 21, and further a step surface 24 is formed at the junction of the mounting hole 23 and the rotating shaft hole 21, and the limiting cap body 3 is attached to the step surface 24; the limiting cap body 3 is in the mounting hole 23 and saves space while limiting the rotating seat 2 from being axially separated from the connecting base 1.
[0041] Further, the exposed limiting cap body 3 in the mounting hole 23 affects the appearance, therefore, the outer end of the rotating seat 2 is provided with a cover 6 for shielding the limiting cap body 3, the cover 6 is detachably connected to the rotating seat 2 or the limiting cap body 3; the cover 6 shields the limiting cap body 3 and ensures the appearance of the handrail adjusting mechanism to be simple; in the embodiment, the cover 6 is detachably connected to the limiting cap body 3 through a plug-in structure; the limiting cap body 3 is provided with a plug hole 34, the inner end surface of the cover 6 is provided with a plug-in part 61 matched with the plug hole 34, and the plug-in part 61 is plugged into the plug hole 34; so that the cover 6 is connected to the limiting cap body 6.
[0042] Further, when the rotating seat 2 is in the unlocked state, the rotating seat 2 can freely rotate forward and backward, in order to keep the rotating seat 2 within a reasonable angle range when rotating and avoid the rotating seat 2 from rotating too much, the connecting base 1 is provided with a limiting groove 14 extending along the circumferential direction of the rotating seat 2, the limiting groove 14 has two limiting ends, the rotating seat 2 is provided with a limiting protrusion 25 at one end facing the connecting base 1, the limiting protrusion 25 is inserted into the limiting groove 14, so as to limit the rotating range of the rotating seat 2 between the two limiting ends; preventing the rotating seat 2 from rotating too much in the unlocked state.
[0043] Further, the button 4 comprises a pressing part 42 exposed at the outer end of the rotating seat 2, and the limiting part 41 is integrally formed with the pressing part 42; in order to ensure the smooth expansion and contraction of the button 4 along the predetermined waterproof direction when pressed, the rotating seat 2 is provided with a guide groove 221 matched with the pressing part 42, the guide groove 221 is communicated with the accommodating groove 22, the pressing part 42 is slidingly connected in the guide groove 221, and the guide groove 221 guides the movement track of the button 4 to prevent the button 4 from deviating from the predetermined position when pressed.
[0044] Further, in order to improve the operation comfort, the outer end of the pressing part 42 is outwardly bent and formed with a pressing surface 43 for increasing the pressing area, so that the pressing surface 43 can avoid the pressing button 4 from being pressed with a pressing feeling compared with only pressing the pressing part 42.
[0045] Furthermore, the seat is provided with the armrest rotating adjusting mechanism, and specifically, the armrest rotating adjusting mechanisms are symmetrically arranged on the left and right sides of the chair body, the connecting base 1 of the armrest rotating adjusting mechanism is extended along the horizontal direction and formed with an extension part, the extension part is provided with a waist-shaped groove which is threadedly connected with the lower end of the seat, and when the armrest rotating adjusting mechanism is installed, the connecting base 1 of the armrest rotating adjusting mechanism is connected with the lower end of the seat, so that the left and right armrests are kept in the supporting position; when the seat is needed to be pushed under the table for storage, the button 4 is pressed and the rotating base 2 is rotated backward, so that the armrests are avoided from interfering with the table.
[0046] The above description is only illustrative of the present application and its embodiments, and the description is not restrictive, and the drawings only show one of the embodiments of the present application, and the actual structure is not limited thereto. Therefore, if the ordinary skilled in the art is inspired by the description, without departing from the creative purpose of the present application, similar structure and embodiments can be designed without creativity, and all of them should belong to the protection scope of the present application.
Claims
1. A handrail rotation adjustment mechanism, characterized by, The utility model relates to a rotating seat (2) for connecting with a handrail, a connecting seat (1) for connecting with a seat, a rotating support part (11) is equipped on the connecting seat (1), a rotating shaft hole (21) that is matched with the rotating support part (11) is equipped through in the rotating seat (2), the rotating support part (11) is inserted in the rotating shaft hole (21), make the rotating seat (2) can rotate relative to the connecting seat (1), an adjusting assembly is equipped between the rotating support part (11) and the rotating seat (2), the adjusting assembly includes the limiting cap body (3) of detachable connection in the outer end of rotating support part (11), the limiting cap body (3) is equipped with the limiting slot (31) on, the limiting cap body (3) with the rotating seat (2) between the button (4) of elastic extension and contraction along the axis direction of rotating seat (2) is equipped with, the button (4) is equipped with the limiting part (41) of corresponding position with the limiting slot (31) on, The rotating seat (2) has a locking state and an unlocking state; when the rotating seat (2) is in the locking state, the limiting part (41) is in the limiting slot (31) to limit the rotation of the rotating seat (2); an external force presses and makes the button (4) elastically retract, at this time the limiting part (41) is out of the limiting slot (31), the rotating seat (2) can be freely rotated and the limiting part (41) is misaligned with the limiting slot (31), at this time the rotating seat (2) is switched to the unlocking state; when the rotating seat (2) is reversely rotated and reset to the initial position, the limiting part (41) is again positionally corresponding to the limiting slot (31), at this time the button (4) elastically extends and makes the limiting part (41) re-enter the limiting slot (31), so that the rotating seat (2) is switched back to the unlocking state.
2. A handrail rotation adjustment mechanism according to claim 1, wherein: Further comprising a resilient member acting on the button (4), when an external force presses the button (4), the resilient member elastically deforms to store elastic force, when the rotating seat (2) rotates and the limiting part (41) is positionally corresponding to the limiting slot (31), the resilient member releases the elastic force to facilitate the limiting part (41) to reset and enter the limiting slot (31).
3. A handrail rotation adjustment mechanism according to claim 2, wherein: The rotating seat (2) is provided with a containing groove (22) corresponding to the position of the limiting part (41), and the resilient member is a compression spring (5) arranged in the containing groove (22) and acting on the limiting part (41).
4. A handrail rotation adjustment mechanism according to claim 1, wherein: The outer end of the rotating support part (11) is provided with a screw hole (12), the limiting cap body (3) is provided with a through hole (33) corresponding to the screw hole (12), a screw passes through the through hole (33) and is screwed into the screw hole (12), locking the limiting cap body (3) and the rotating support part (11).
5. A handrail rotation adjustment mechanism according to claim 1, wherein: The outer end of the rotating seat (2) is provided with a mounting hole (23) concentric with the rotating shaft hole (21) and used for containing the limiting cap body (3), the diameter of the mounting hole (23) is greater than the diameter of the rotating shaft hole (21), thereby forming a step surface (24) at the junction of the mounting hole (23) and the rotating shaft hole (21), and the limiting cap body (3) is in abutment with the step surface (24).
6. A handrail rotation adjustment mechanism according to claim 1, wherein: The outer end of the rotating seat (2) is provided with a cover (6) shielding the limiting cap body (3), and the cover (6) is detachably connected to the rotating seat (2) or the limiting cap body (3).
7. A handrail rotation adjustment mechanism according to claim 1, wherein: The connecting base (1) is provided with a limiting groove (14) extending along the circumferential direction of the rotating base (2), the limiting groove (14) has two limiting ends, and the rotating base (2) is provided with a limiting protrusion (25) at one end facing the connecting base (1), the limiting protrusion (25) is inserted into the limiting groove (14) to limit the rotating range of the rotating base (2) between the two limiting ends.
8. A handrail rotation adjustment mechanism according to claim 1, wherein: The button (4) comprises a pressing part (42) exposed at the outer end of the rotating base (2), and the limiting part (41) is integrally formed with the pressing part (42); the rotating base (2) is provided with a guide groove (221) matched with the pressing part (42), and the pressing part (42) is slidingly connected in the guide groove (221).
9. A handrail rotation adjustment mechanism according to claim 1, wherein: The button (4) comprises a pressing part (42) exposed at the outer end of the rotating base (2) and integrally formed with the limiting part (41), and the outer end of the pressing part (42) is outwardly bent and formed with a pressing surface (43) for increasing the pressing area.
10. A seat, characterized by: The armrest rotating adjusting mechanism comprises the armrest rotating adjusting mechanism according to any one of claims 1-9.