CN2353244Y - Device for adjusting angle of chair back - Google Patents
Device for adjusting angle of chair back Download PDFInfo
- Publication number
- CN2353244Y CN2353244Y CN 99237065 CN99237065U CN2353244Y CN 2353244 Y CN2353244 Y CN 2353244Y CN 99237065 CN99237065 CN 99237065 CN 99237065 U CN99237065 U CN 99237065U CN 2353244 Y CN2353244 Y CN 2353244Y
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- eccentric
- gear
- internal gear
- external gear
- center
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Abstract
The utility model relates to a device for adjusting the angle of a chair backrest. The utility model is characterized in that an internal gear and an external gear are mutually meshed; the center of the internal gear pointing to the direction of an engaging tooth is provided with a stepped shaft with a hole; the center of the external gear is provided with a central hole; the stepped shaft stretches out of the center hole, forming a round groove, and two eccentric slide blocks and an arc-shaped table of a rotating body are arranged in the round groove; the rotating body which overcomes the force of a torsion spring drives the eccentric slide block to rotate and drives the internal gear to move, so that the angle of the chair backrest is adjusted. The utility model has the advantages of comfort, stepless adjustment of the angle within 0-180 DEG, easy adjustment, strong shock resistance, no swing of chair backrests, etc. The utility model has a self-locking function. The utility model can be used for adjusting the angles of various chair backrests.
Description
The utility model relates to a kind of Chair back angle demodulator, is used for the angular adjustment of automotive seat or other Chair back.
The Chair back angle demodulator is the vitals on the automotive seat, relates to important technology performance indications such as the security of seat and comfortableness.At present, the angle demodulator that car adopted produced of China mainly is according to the transmission principle design of duplicate gear internal-gearing planet gear transmission.It comprises that two tooth plates, a compound planet gear, an eccentric wheel reach with seat support, the joining installing plate of the chair back and form.During work, handle drives eccentric wheel and rotates, and compound planet gear rotates under the effect of eccentric wheel eccentric rotary, drives the tooth plate motion, realizes the adjusting of Chair back angle.But this kind seat angle adjustment complex structure, manufacture difficulty height, also has a bigger shortcoming simultaneously, because meshed transmission gear must leave certain flank back lash, thereby can make seat angle adjustment chair back under self-locking state certainly lead to certain rocking, influence the performance of seat.
The purpose of this utility model is at the defective that exists in the prior art, provide a kind of can eliminate that Chair back rocks and relatively simple for structure, self-locking property good, the gapless chair chair back angle demodulator being convenient to produce in batches.
For achieving the above object, the technical solution of the utility model is that the principle according to the small teeth number difference planet gear transmission designs, this Chair back angle demodulator comprises that intermeshing flute profile is the internal gear and the external gear of blind tooth and acts on wherein eccentric, being connected with the chair back has a step axle that the center is porose as the center of the internal gear of tumbler towards a side of engagement, there is a centre bore at the center that is connected with seat support as the external gear of fixture, described step axle stretches out from described centre bore, and described eccentric comprises eccentric shoe and it is applied torsion spring and a rotor that is used to drive the eccentric shoe rotation of active force.
The structure of this Chair back angle demodulator has adopted new design type, and all-in-one-piece in the past eccentric wheel is replaced by two eccentric shoes.When the rotor rotation stops, because the effect of spring tension makes eccentric shoe be pressed against both sides, centre-to-centre spacing between two gears is increased, thereby the elimination gear backlash makes seat angle adjustment have good self-locking property, and has eliminated rocking of the chair back that the gap owing to flank profil causes; When rotor rotated, external torque overcomes spring force made eccentric shoe relative motion, the centre-to-centre spacing between inside and outside gear reduce and the generation back lash, is realizing relatively rotating between gear under the effect of eccentric shoe, thereby is realizing chair back angular adjustment.
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is an A-A cutaway view of the present utility model.
Fig. 3 is the structural representation of the utility model eccentric.
In the utility model, external gear 1 and internal gear 2 profiles of tooth are made blind tooth 12 and blind tooth 11 respectively, external gear 1 links by seat support connecting plate 8 and seat seat support as fixed gear, make at the center of external gear 1 one with the identical centre bore 15 of eccentric shoe (3,3 ') external diameter; Internal gear 2 links by the chair back of chair back connecting plate 10 with seat, and make a step axle 13 in the side that engagement is arranged, the external diameter of its step axle 13 is identical with the internal diameter of eccentric shoe, and its center has a centre bore (14), eccentric shoe (3,3 ') outer arc center and off-centre of inner arc center existence, when interior, during the external gear engagement, the step axle 13 of internal gear 2 is positioned among the centre bore 15 of external gear 1, form an eccentric cannelure 18, with two eccentric shoes (3,3 ') pack eccentric cannelure 18 symmetrically into along the inwall of the outer wall of internal gear 2 step axles 13 and external gear 1 centre bore 15, its girth sum accounts for 1/2nd of external gear 1 centre bore 15 girths.Torsion spring 4 is installed between two eccentric shoes (3,3 '), the groove (16,16 ') that makes the tension force at torsion spring 4 two ends act on eccentric shoe is respectively located, arc step that rotor 5 is made 17 inserts in the remaining space of eccentric cannelure 18, rotate so that rotor 5 drives eccentric shoe (3,3 ') when rotating being subjected to applied moment, relatively rotate thereby drive between the inside and outside gear; Apply rotary spacing with internal gear 2 joining chair back connecting plate 10 external gear wheels 1, apply rotary spacing with 8 pairs of internal gears 2 of external gear 1 joining seat support connecting plate.On revolute pair, be coated with lubricating grease in the assembling process, and anti-wearing liner 6 is installed on the centre bore 15 of external gear 1, between the contact-making surface of chair back connecting plate 10 and external gear 1, add liner 7, adding liner 7 between the contact-making surface of seat support connecting plate 8 and internal gear 2 ', reducing friction, and add dust cover 9 on the surface of external gear 1.
During use, rotor 5 is as power shaft, when it is subjected to operating torsional interaction, promote the eccentric shoe (3,3 ') of a side, make torsion spring 4 compressions, relative distance diminishes between the eccentric shoe, centre-to-centre spacing also diminishes thereupon between two gears, the back lash occurs between inside and outside gear, thereby internal gear 2 is rotated under the effect of rotor 5, realize the adjusting of chair back angle.
When chair back adjustment process finishes, the moment of torsion that is applied on the rotor 5 promptly disappears, and the tension force of torsion spring 4 makes that relative distance becomes big between two eccentric shoes, centre-to-centre spacing also becomes big thereupon between two gears, inside and outside gear is by asphyxia by external pressure on the chest and abdomen at this moment, and the flank back lash is eliminated fully, rocks thereby the chair back is not had.
Claims (6)
1. backrest angle demodulator, it comprises internal gear (2), external gear (1) and acts on wherein eccentric, it is characterized in that: profile of tooth is that internal gear (2) and the profile of tooth of blind tooth (11) is that the external gear (1) of blind tooth (12) is meshing with each other, and being connected with the chair back has a step axle (13) as the center of the internal gear (2) of tumbler towards a side of engaging tooth; There is a centre bore (15) at the center that is connected with seat support as the external gear (1) of fixture, described step axle (13) stretches out from described centre bore (15), and described eccentric comprises eccentric shoe (3,3 ') and it is applied torsion spring (4) and a rotor (5) that drives eccentric shoe (3,3 ') rotation of interaction force.
2. backrest angle demodulator according to claim 1, it is characterized in that: described eccentric shoe (3,3 ') is packed into along the inwall of the centre bore (15) of the outer wall of internal gear (2) step axle (13) and external gear (1), and the external diameter of eccentric shoe (3,3 ') is identical with centre bore (15) diameter of external gear (1), the internal diameter of eccentric shoe (3,3 ') is identical with the external diameter of the step axle (13) of internal gear (2), has an eccentric throw outside the eccentric shoe (3,3 ') between side center of arc and the inner arc center.
3. backrest angle demodulator according to claim 1 and 2, it is characterized in that: described eccentric shoe (3,3 ') is two, one end of each eccentric shoe is provided with groove (16,16 '), and eccentric shoe (3, the 3 ') symmetry that is provided with groove (16,16 ') is placed.
4. according to claim 1,2 or 3 described backrest angle demodulators, it is characterized in that: the two ends of torsion spring (4) act on respectively on the groove (16,16 ').
5. according to claim 1,2 or 3 described backrest angle demodulators, it is characterized in that: the rotor (5) that passes from the centre bore (14) of step axle (13) has the arc step (17) that inserts the remaining space of two eccentric shoes (3,3 ') eccentric cannelure (18).
6. backrest angle demodulator according to claim 1 is characterized in that: the outer surface of external gear (1) is added with dust cover (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99237065 CN2353244Y (en) | 1999-01-18 | 1999-01-18 | Device for adjusting angle of chair back |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99237065 CN2353244Y (en) | 1999-01-18 | 1999-01-18 | Device for adjusting angle of chair back |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2353244Y true CN2353244Y (en) | 1999-12-15 |
Family
ID=34024790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99237065 Expired - Fee Related CN2353244Y (en) | 1999-01-18 | 1999-01-18 | Device for adjusting angle of chair back |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2353244Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007131394A1 (en) * | 2006-05-11 | 2007-11-22 | Hubei Aviation Precision Machinery Technology Co., Ltd. | A gear-type stepless adjusting structure for seat angle |
| CN106108705A (en) * | 2016-06-30 | 2016-11-16 | 麦重伟 | A kind of food stirring device |
| CN106175211A (en) * | 2016-07-30 | 2016-12-07 | 陈烁 | Extension Spring-type Public seat |
| CN116424190A (en) * | 2023-06-12 | 2023-07-14 | 长春一汽富晟李尔汽车座椅系统有限公司 | Four-way leg support mechanism of automobile seat |
-
1999
- 1999-01-18 CN CN 99237065 patent/CN2353244Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007131394A1 (en) * | 2006-05-11 | 2007-11-22 | Hubei Aviation Precision Machinery Technology Co., Ltd. | A gear-type stepless adjusting structure for seat angle |
| US7543889B2 (en) | 2006-05-11 | 2009-06-09 | Hubei Aviation Precision Machinery Technology Co., Ltd. | Gear-driven adjusting assembly for continuous adjustment of seat angle |
| CN101070055B (en) * | 2006-05-11 | 2011-06-08 | 湖北中航精机科技股份有限公司 | Gear-type chair angle stepless regulation structure |
| CN106108705A (en) * | 2016-06-30 | 2016-11-16 | 麦重伟 | A kind of food stirring device |
| CN106175211A (en) * | 2016-07-30 | 2016-12-07 | 陈烁 | Extension Spring-type Public seat |
| CN116424190A (en) * | 2023-06-12 | 2023-07-14 | 长春一汽富晟李尔汽车座椅系统有限公司 | Four-way leg support mechanism of automobile seat |
| CN116424190B (en) * | 2023-06-12 | 2023-09-19 | 长春一汽富晟李尔汽车座椅系统有限公司 | Four-way leg support mechanism of automobile seat |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHONGHANG LIFE-SAVING SCIENCE & TECHNOLOGY CO., LT Free format text: FORMER NAME OR ADDRESS: CHINA AEROSPACE INDUSTRY CORPORATION INSTITUTE 610 |
|
| CP03 | Change of name, title or address |
Address after: Aero tech Industrial Zone, Jiangshan South Road, Xiangfan high tech Zone, Hubei Patentee after: Zhonghang Lifesaving Sci-Tech Co., Ltd., Hubei Address before: Hubei Xiangfan 157 mailbox management plan department Ruan Lizhuan Patentee before: 610th Research Institute of China Aviation Industry Corporation |
|
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Ruan Li Document name: Notification of Termination of Patent Right |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |