CN210446294U - Rotary mechanism and chair rotary supporting structure - Google Patents
Rotary mechanism and chair rotary supporting structure Download PDFInfo
- Publication number
- CN210446294U CN210446294U CN201921292361.2U CN201921292361U CN210446294U CN 210446294 U CN210446294 U CN 210446294U CN 201921292361 U CN201921292361 U CN 201921292361U CN 210446294 U CN210446294 U CN 210446294U
- Authority
- CN
- China
- Prior art keywords
- rotating
- rotating shaft
- supporting seat
- seat
- rotary
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Chairs Characterized By Structure (AREA)
Abstract
The utility model discloses a rotating mechanism and a chair rotating support structure, which comprises a rotating support seat, wherein a bulge is arranged on the inner wall of the rotating support seat; the rotating shaft is in rotating fit with the rotating support seat along the circumferential direction and is relatively fixed along the axial direction, at least one limiting pin is arranged on the side wall of the rotating shaft, and the protrusion plays a role in blocking the limiting pin during rotation; and the bushing and the rotary supporting seat are fixed in the circumferential direction. The utility model provides a rotating mechanism for a chair seat, which realizes the limit of the angle of a rotating shaft by a limit pin arranged on the rotating shaft and a bulge arranged on the inner wall of a rotating supporting seat; the utility model has simple structure and convenient connection, and only needs to arrange the rotating shaft in the rotating support seat for rotating fit; furthermore, the utility model discloses on being applied to the chair with rotary mechanism for chair seat rotation angle obtains spacingly, even be applied to on the electronic chair, also does not have the risk of winding the electric wire.
Description
Technical Field
The utility model relates to a field of seat support, in particular to rotary mechanism and rotatory bearing structure of chair utensil.
Background
A lot of rotary mechanism rotations in the existing market are rocked the clearance great, do not have the angle spacing moreover, cause the chair to rock, do not have the spacing rotary rod of angle, on applying the electronic chair of taking the tow line plug, the plug tow line is twined easily, has the potential safety hazard.
It is now envisaged that a swivel mechanism which can adjust, limit the swivel angle of the chair so that it is as high even when applied to a power seat is a problem to be solved at present.
Disclosure of Invention
The utility model overcomes exist not enough among the above-mentioned prior art, provide a rotary mechanism, can effectual solution chair rock the clearance, solve the chair power plug wire and by winding risk. The position of the limiting pin on the rotating shaft or the protruding position of the limiting pin on the rotating shaft in the occupied proportion of the circumferential direction are adjusted to change the limiting angle, so that the universality and the convenience in later-stage production are greatly improved, and meanwhile, the multi-angle limiting adjustment can meet the requirements of different customers.
Still further, the utility model discloses provide a rotatory bearing structure of chair simultaneously again, be applied to the chair with rotary mechanism on for chair seat rotation angle obtains spacingly, even be applied to on the electronic chair, also does not have the risk of winding the electric wire, has promoted user experience.
The technical scheme of the utility model is realized like this:
a rotary mechanism comprising:
the rotary supporting seat is hollow, two ends of the rotary supporting seat are open, and a bulge is arranged on the inner wall of the rotary supporting seat;
the rotating shaft is provided with a head part and a tail part, the tail part of the rotating shaft is inserted from one end of the rotating support seat, the head part of the rotating shaft is exposed out of the rotating support seat, the rotating shaft and the rotating support seat are in rotating fit along the circumferential direction and are relatively fixed along the axial direction, at least one limiting pin is arranged on the side wall of the rotating shaft, and in the rotating process, the protrusion plays a role in blocking the limiting pin;
the bushing is sleeved between the rotating shaft and the rotating supporting seat and keeps the rotating shaft in a centered state, and the bushing and the rotating supporting seat are fixed in the circumferential direction.
The utility model provides a rotating mechanism for a chair seat, which realizes the limit of the angle of a rotating shaft by a limit pin arranged on the rotating shaft and a bulge arranged on the inner wall of a rotating supporting seat; the utility model has simple structure and convenient connection, and only needs to arrange the rotating shaft in the rotating support seat for rotating fit; the bush is made for plastics, can avoid intermetallic direct contact friction, avoids the noise.
Preferably, the relative fixation of the rotating shaft and the rotating support seat along the axial direction means that: the lower half part of rotation axis is big-end-up's round platform shape, and the shape of rotatory supporting seat inner chamber matches with it, is equipped with the screw hole on the afterbody bottom surface of rotation axis, and the rotation axis passes through the screw and is fixed continuous on axial direction with rotatory supporting seat, and wherein, the screw head of screw supports at rotatory supporting seat lower extreme.
Preferably, the relative fixation of the rotating shaft and the rotating support seat along the axial direction means that: the tail bottom surface of the rotating shaft is provided with a threaded hole, the other end of the rotating supporting seat is provided with a baffle, the baffle is provided with a screw hole, the tail of the rotating shaft abuts against the baffle, the rotating shaft is fixedly connected with the rotating supporting seat in the axial direction through a screw, and the screw head of the screw abuts against the baffle.
Preferably, the bushing and the rotary support seat are fixed in the circumferential direction by: be equipped with on the bush lateral wall and dodge bellied breach, the bush inserts to rotatory supporting seat intracavity back, and the bush is fixed with protruding joint with the help of the breach.
Preferably, the bushing comprises an upper bushing and a lower bushing which are arranged at intervals, wherein the upper bushing comprises an end cover with a middle hole, a hollow sleeve extends downwards from the bottom surface of the end cover, the edge of the end cover is lapped at the upper end of the rotary supporting seat, the sleeve is attached to the inner wall of the upper part of the rotary supporting seat, and the rotary shaft is arranged in the sleeve in a penetrating manner; the inner surface and the outer surface of the lower bushing are respectively attached to the outer wall of the rotating shaft and the inner wall of the rotating supporting seat. The upper and lower bushings are separately arranged, so that the bushings are more convenient to produce and process, the bushings can be integrated, the integrated bushings are needed in the integrated bushing production process, the machining process is difficult, the cost is high, the split design can meet the requirement, the cost is low, and the integrated bushing production process is suitable for large-scale popularization.
Preferably, the limit pin is a limit screw in threaded connection with the outer wall of the rotating shaft. The limiting screw is convenient to install and disassemble.
Preferably, the number of the limiting pins is one or two.
Preferably, the number of the limiting pins is two, and a preset included angle is formed between the two limiting pins. And determining the rotation angle of the rotating shaft according to the preset included angle and the proportion of the protrusions in the circumferential direction.
Preferably, the two limit pins form an included angle of 180 degrees or 90 degrees.
Preferably, the head part of the rotating shaft is suddenly enlarged to form a clamping step at the head part of the rotating shaft, and the clamping step is abutted against the upper end face of the end cover of the upper bushing. The screens step can prevent that the upper liner from breaking away from the rotary supporting seat.
Preferably, the upper and lower bushings are POM or nylon.
The utility model provides a chair utensil rotation support structure, includes seat support, supporting legs and rotary mechanism, the seat support have the spliced eye, the supporting legs has the sleeve pipe, the head of rotation axis and the spliced eye grafting cooperation of seat support, the lower part and the sleeve pipe grafting cooperation of rotary support seat. The rotating mechanism is applied to the chair, so that the rotating angle of the chair seat of the chair is limited, and even if the rotating mechanism is applied to the electric chair, the risk of winding wires is avoided, and the user experience is improved.
Adopted above-mentioned technical scheme the utility model discloses a design departure point, theory and beneficial effect are:
the utility model provides a rotating mechanism for a chair seat, which realizes the limit of the angle of a rotating shaft by a limit pin arranged on the rotating shaft and a bulge arranged on the inner wall of a rotating supporting seat; the utility model has simple structure and convenient connection, and only needs to arrange the rotating shaft in the rotating support seat for rotating fit; the bush is made for plastics, can avoid intermetallic direct contact friction, avoids the noise.
Furthermore, the utility model discloses on being applied to the chair with rotary mechanism for chair seat rotation angle obtains spacingly, even on being applied to electronic chair, also does not have the risk of winding the electric wire, has promoted user experience.
Drawings
Fig. 1 is an exploded perspective view of a rotating mechanism according to embodiment 1 of the present invention;
fig. 2 is an exploded schematic view of a three-dimensional structure of a rotating mechanism in an embodiment 2 of the present invention, when an included angle between two limit pins is 90 °;
fig. 3 is an exploded schematic view of a three-dimensional structure of a rotating mechanism in embodiment 2 of the present invention when an included angle between two limit pins is 180 degrees;
fig. 4 is a front view of a rotating mechanism in an embodiment of the present invention;
fig. 5 is a cross-sectional view of the rotating mechanism in the direction a-a according to the present invention in example 1;
fig. 6 is a cross-sectional view of the rotating mechanism in the direction a-a and an included angle between two limit pins is 90 ° according to the present invention in embodiment 2;
fig. 7 is a cross-sectional view of the rotating mechanism in the direction of a-a and an included angle between two limit pins is 180 ° in embodiment 2 of the present invention;
fig. 8 is a cross-sectional view of the rotating mechanism in the direction B-B in embodiment 1 of the present invention;
fig. 9 is a cross-sectional view of the rotating mechanism in the direction B-B and the angle between two limit pins is 90 ° in embodiment 2 of the present invention;
fig. 10 is a cross-sectional view of the rotating mechanism in the B-B direction and the angle between two limit pins is 180 ° in embodiment 2 of the present invention.
The figures are numbered: rotating the support base 1; a protrusion 11; a screw 13; a screw head 13 a; a screw 13 b; a rotating shaft 2; a head portion 21; a tail portion 22; a stopper pin 23; a bushing 3; upper and lower bushings 31, 32; an end cap 311; a central aperture 312; a sleeve 313; a gasket 4; a threaded hole 5; a baffle 6; and a nail passing hole 7.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
In the description of the present invention, the term "at least one" means one or more unless explicitly defined otherwise. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The specific implementation manner of the utility model is as follows:
example 1: the utility model discloses at first, a rotary mechanism is provided, as shown in fig. 1, 4, 5, 8, include:
the rotary supporting seat 1 is hollow, two ends of the rotary supporting seat 1 are open, and a bulge 11 is arranged on the inner wall of the rotary supporting seat 1; the protrusion 11 can be set to different shapes according to requirements, and the cross section of the protrusion 11 in the embodiment is fan-shaped and is arranged along the length direction of the inner wall of the rotary supporting seat 1.
The rotating shaft 2 is provided with a head 21 and a tail 22, the tail 22 of the rotating shaft 2 is inserted from one end, namely the upper end, of the rotating support base 1, so that the head 21 of the rotating shaft 2 is exposed out of the rotating support base 1, the rotating shaft 2 and the rotating support base 1 are in running fit along the circumferential direction and are relatively fixed along the axial direction, a limit pin 23 is arranged on the side wall of the tail 22 of the rotating shaft 2, the limit pin 23 is a limit screw in threaded connection with the outer wall of the rotating shaft 2, and the limit screw is convenient to mount and dismount; during the rotation, the protrusion 11 acts as a stop for the limit pin 23.
The bush 3 is sleeved between the rotating shaft 2 and the rotating support seat 1, the rotating shaft 2 is kept in a centered state, and the bush 3 and the rotating support seat 1 are fixed in the circumferential direction; the bush 3 is made of plastic, and is specifically made of POM or nylon in the embodiment, so that direct contact friction between metals can be avoided, and noise is avoided.
In detail, the rotation axis 2 and the rotation support base 1 are rotationally engaged in the circumferential direction: after the rotating shaft 2 is inserted into the rotating support seat 1, the rotating support seat 1 can rotate by a certain angle, and the rotating angle can be controlled according to the proportion of the protrusions 11 in the circumferential direction or the number of the limiting pins 23 and the preset included angle between the limiting pins 23.
The relative fixation of the rotating shaft 2 and the rotating support seat 1 along the axial direction means that: as shown in fig. 8, a threaded hole 5 is formed in the bottom surface of the tail of the rotating shaft, a baffle plate 6 is arranged at the other end, i.e., the lower end, of the rotating support 1, a screw hole 7 is formed in the baffle plate 6, the tail 33 of the rotating shaft abuts against the baffle plate 6, the rotating shaft 2 is fixedly connected with the rotating support 1 in the axial direction through a screw 13, a screw 13b of the screw 13 penetrates through the screw hole 7 and is screwed into the threaded hole 5, and a screw head 13a of the screw 13 abuts against the baffle plate 6.
Of course, as another implementation manner that the rotation axis 2 and the rotation support base 1 are relatively fixed along the axial direction, the rotation axis 2 may also be set to be a truncated cone shape with a large top and a small bottom, the shape of the inner cavity of the rotation support base 1 matches with the circular truncated cone shape, a threaded hole is formed in the bottom surface of the tail portion 22 of the rotation axis 2, an avoiding hole is formed in the bottom of the rotation support base 1, the rotation axis 2 is fixedly connected with the rotation support base 1 in the axial direction through a screw 13, wherein the screw head of the screw 13 abuts against the lower end of the rotation support base 1, and the screw tail of the screw 13 is screwed into the threaded hole after.
In addition, a gasket 4 made of plastic is arranged between the screw 13 and the rotary support seat 1, and the gasket 4 can prevent the screw head of the screw 13 from directly contacting the rotary support seat 1.
The fixing of the bush 3 and the rotary supporting seat 1 in the circumferential direction means that: be equipped with on the 3 lateral walls of bush and dodge protruding 11's breach, after bush 3 inserted 1 intracavity of rotary supporting seat, bush 3 was fixed with protruding 11 joint with the help of the breach.
Specifically, the bushing 3 includes an upper bushing 31 and a lower bushing 32 arranged at an interval, wherein the upper bushing 31 includes an end cover 311 having a central hole 312, a hollow sleeve 313 extends downward from a bottom surface of the end cover 311, an edge of the end cover 311 is lapped on an upper end of the rotary support base 1, the sleeve 313 is attached to an inner wall of an upper portion of the rotary support base 1, and the rotary shaft 2 is inserted into the sleeve 313; the inner and outer surfaces of the lower bushing 32 are respectively attached to the outer wall of the rotating shaft 2 and the inner wall of the rotating support base 1.
As shown in fig. 1, 2 and 8, the turning shaft head 21 is suddenly enlarged to form a locking step 8 at the junction of the turning shaft head 21 and the turning shaft itself, and the locking step 8 abuts against the upper end surface of the end cover 311 of the upper bushing.
As an example, in the case where one stopper pin 23 is provided, the rotation angle of the rotating shaft 2:
as shown in fig. 1, 5 and 8, in this embodiment, the ratio of the protrusion 11 in the circumferential direction is 25%, the angle is 90 °, one of the limit pins 23 is provided, and in the process that the rotating shaft 2 rotates along the rotary support base 1, after the limit pin 23 rotates 270 ° in one direction, the limit pin 23 is blocked by one surface of the protrusion 11, and cannot rotate continuously, so that the rotation angle of the rotating shaft 2 is controlled to be 270 °.
Of course, the angle of the protrusion 11 may be set to any angle of 0 to 360 ° according to the needs of the manufacturer, which is not listed here.
The utility model discloses provide the rotatory bearing structure of chair then, rotary mechanism is applied to on the chair for chair seat rotation angle obtains spacingly, even be applied to on the electronic chair, also does not have the risk of winding the electric wire, has promoted user experience.
Specifically, the chair rotation support structure comprises a chair seat, supporting legs and the rotation mechanism, wherein the chair seat is provided with an insertion hole, the supporting legs are provided with sleeves, the head 21 of the rotation shaft 2 is in insertion fit with the insertion hole of the chair seat, and the lower part of the rotation support seat 1 is in insertion fit with the sleeves.
Example 2: as shown in fig. 2, 3, 6, 7, 9 and 10, the present embodiment is different from embodiment 1 in that two limit pins 23 are disposed on the side wall of the rotating shaft 2, and a predetermined included angle is formed between the two limit pins 23; the rotation angle of the rotating shaft 2 is determined according to a preset included angle and the proportion of the protrusions 11 in the circumferential direction.
As an example, the rotation angle of the rotary shaft 2 in the case where two stopper pins 23 are provided:
(1) as shown in fig. 2, 6 and 9, in this embodiment, the ratio of the protrusion 11 in the circumferential direction is 25%, the angle is 90 °, the two limit pins 23 are provided, and the included angle between the two limit pins 23 is 90 °, so that in the process that the rotating shaft 2 rotates along the rotating support base 1, after the limit pins 23 rotate 180 ° in one direction, the rotating shaft is blocked by one surface of the protrusion 11, and cannot rotate continuously, so that the rotating angle of the rotating shaft 2 is controlled to be 180 °.
(2) As shown in fig. 3, 7 and 10, in this embodiment, the ratio of the protrusion 11 in the circumferential direction is 25%, the angle is 90 °, the two limit pins 23 are symmetrically disposed on the side wall of the rotating shaft 2, the included angle between the two limit pins 23 is 180 °, and in the process that the rotating shaft 2 rotates along the rotating support base 1, after the limit pin 23 rotates 90 ° in one direction, the limit pin 23 is blocked by one surface of the protrusion 11 and cannot rotate continuously, so that the rotation angle of the rotating shaft 2 is controlled to be 90 °.
Of course, the manufacturer can set the angle of the protrusion 11 to be 0 to 360 ° according to his or her own needs, or set the included angle between the two limit pins 23 to be any angle, and then the rotation angle of the rotating shaft 2 can be controlled, which is not illustrated here.
Claims (12)
1. A rotary mechanism characterized by comprising:
the rotary supporting seat is hollow, two ends of the rotary supporting seat are open, and a bulge is arranged on the inner wall of the rotary supporting seat;
the rotating shaft is provided with a head part and a tail part, the tail part of the rotating shaft is inserted from one end of the rotating support seat, the head part of the rotating shaft is exposed out of the rotating support seat, the rotating shaft and the rotating support seat are in rotating fit along the circumferential direction and are relatively fixed along the axial direction, at least one limiting pin is arranged on the side wall of the rotating shaft, and in the rotating process, the protrusion plays a role in blocking the limiting pin;
the bushing is sleeved between the rotating shaft and the rotating supporting seat and keeps the rotating shaft in a centered state, and the bushing and the rotating supporting seat are fixed in the circumferential direction.
2. The rotary mechanism of claim 1, wherein: the relative fixing of rotation axis and rotation supporting seat along axial direction indicates: the lower half part of rotation axis is big-end-up's round platform shape, and the shape of rotatory supporting seat inner chamber matches with it, is equipped with the screw hole on the afterbody bottom surface of rotation axis, and the rotation axis passes through the screw and is fixed continuous on axial direction with rotatory supporting seat, and wherein, the screw head of screw supports at rotatory supporting seat lower extreme.
3. The rotary mechanism of claim 1, wherein: the relative fixing of rotation axis and rotation supporting seat along axial direction indicates: the tail bottom surface of the rotating shaft is provided with a threaded hole, the other end of the rotating supporting seat is provided with a baffle, the baffle is provided with a screw hole, the tail of the rotating shaft abuts against the baffle, the rotating shaft is fixedly connected with the rotating supporting seat in the axial direction through a screw, and the screw head of the screw abuts against the baffle.
4. The rotary mechanism of claim 1, wherein: the bush and the rotary support seat are fixed in the circumferential direction: be equipped with on the bush lateral wall and dodge bellied breach, the bush inserts to rotatory supporting seat intracavity back, and the bush is fixed with protruding joint with the help of the breach.
5. The rotary mechanism of claim 4, wherein: the bushing comprises an upper bushing and a lower bushing which are arranged at intervals, wherein the upper bushing comprises an end cover with a middle hole, the bottom surface of the end cover extends downwards to form a hollow sleeve, the edge of the end cover is lapped at the upper end of the rotary supporting seat, the sleeve is attached to the inner wall of the upper part of the rotary supporting seat, and the rotary shaft is arranged in the sleeve in a penetrating manner; the inner surface and the outer surface of the lower bushing are respectively attached to the outer wall of the rotating shaft and the inner wall of the rotating supporting seat.
6. The rotary mechanism of claim 1, wherein: the limiting pin is a limiting screw in threaded connection with the outer wall of the rotating shaft.
7. The rotary mechanism of claim 6, wherein: one or two limiting pins are provided.
8. The rotary mechanism of claim 7, wherein: the number of the limiting pins is two, and a preset included angle is formed between the two limiting pins.
9. The rotary mechanism of claim 8, wherein: an included angle of 180 degrees or 90 degrees is formed between the two limiting pins.
10. The rotary mechanism of claim 5, wherein: the head of the rotating shaft is suddenly enlarged to form a clamping step at the head of the rotating shaft, and the clamping step is abutted against the upper end face of the end cover of the upper bushing.
11. The rotary mechanism of claim 5, wherein: the upper and lower bushings are made of POM or nylon.
12. A chair rotation support structure is characterized in that: comprising a seat, supporting feet and a rotating mechanism according to any one of claims 1 to 11, wherein the seat is provided with a plug hole, the supporting feet are provided with sleeves, the head of the rotating shaft is in plug fit with the plug hole of the seat, and the lower part of the rotating supporting seat is in plug fit with the sleeves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921292361.2U CN210446294U (en) | 2019-08-09 | 2019-08-09 | Rotary mechanism and chair rotary supporting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921292361.2U CN210446294U (en) | 2019-08-09 | 2019-08-09 | Rotary mechanism and chair rotary supporting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210446294U true CN210446294U (en) | 2020-05-05 |
Family
ID=70450529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921292361.2U Active CN210446294U (en) | 2019-08-09 | 2019-08-09 | Rotary mechanism and chair rotary supporting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210446294U (en) |
-
2019
- 2019-08-09 CN CN201921292361.2U patent/CN210446294U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4090210A (en) | Swivel support fixture for lamp | |
| US8096495B2 (en) | Spindle for a roll of web material | |
| CN210446294U (en) | Rotary mechanism and chair rotary supporting structure | |
| JPH0352505Y2 (en) | ||
| BRPI0908841B1 (en) | pivot set for a toilet and toilet seat | |
| JP3152033U (en) | gas spring | |
| US3391893A (en) | Thrust bearing for a swivel chair | |
| AU764114B2 (en) | Arm apparatus for mounting electronic devices | |
| US20090242352A1 (en) | Rotation stop system | |
| KR100355430B1 (en) | structure of hinge part for stand | |
| CN214228315U (en) | Rotating shaft structure for camera assembly and camera assembly | |
| CN105816094A (en) | Connected damper for pedestal pan cover and connection fitting | |
| CN210511542U (en) | 360 lamps and lanterns connection structure and outdoor lamp that degree was adjusted | |
| CN215043334U (en) | Novel motorcycle rearview mirror | |
| CN214524227U (en) | Balance car and swing limit structure thereof | |
| JP3682047B2 (en) | Shower mounting equipment | |
| KR200410390Y1 (en) | Supporting tool for revolution mirror | |
| CN206376652U (en) | Back door external opening handle assembly | |
| CN216364397U (en) | Handrail mounting structure | |
| CN217531911U (en) | Low-damping externally-hung type 3D printer consumable support | |
| CN211919692U (en) | Brush rod for cleaning storage tank | |
| CN219617084U (en) | Rear fork left connecting plate processing auxiliary device | |
| CN216851344U (en) | Wireless support that fills | |
| KR20120057201A (en) | Table chairs of the group meal table | |
| CN219883769U (en) | Separable bracket and rearview mirror |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |