CN201468560U - Angle modulation apparatus for chair and chair with such angle modulation apparatus - Google Patents
Angle modulation apparatus for chair and chair with such angle modulation apparatus Download PDFInfo
- Publication number
- CN201468560U CN201468560U CN 200920162374 CN200920162374U CN201468560U CN 201468560 U CN201468560 U CN 201468560U CN 200920162374 CN200920162374 CN 200920162374 CN 200920162374 U CN200920162374 U CN 200920162374U CN 201468560 U CN201468560 U CN 201468560U
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- eccentric
- wedge
- eccentric wheel
- internal gear
- seat
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Abstract
The utility model discloses a angle modulation apparatus comprising an inner gear plate having an inner gear ring, an outer gear plate having an outer gear ring, a eccentric wheel and a wedge shaped block. A shaft shoulder is disposed in the middle of the inner gear plate, an axle pore is disposed in the middle of the outer gear plate. The outer gear ring is engaged with the inner gear ring and a radial eccentric area is formed between the axle shoulder and the axle pore. The eccentric wheel is placed in the radial eccentric area, the eccentric wheel is in the shape of eccentric ring in whole and a little gear difference planetary transmission mechanism is constructed by the inner gear plate and the outer gear plate. The eccentric wheel in the large diameter section of the radial eccentric area is engaged with the shaft shoulder and the axle pore interval. The wedge shaped block is placed within the radial eccentric are, and the wedge shaped block and the eccentric wheel eliminates intervals between the eccentric wheel and the axle pore of the inner gear plate and between engaging gears under the action of the circumferential force applied by the elastic piece. The utility model has extremely high and stable strength property. With this basis, the utility model further provides a chair having such an angle modulation apparatus.
Description
Technical field
The utility model relates to a kind of seat of chair back adjustable angle, the seat that is specifically related to a kind of seat angle adjustor and has this recliner.
Background technology
Seat angle adjustor is used to connect the seat support and the chair back of automotive seat, to strengthen the comfortableness of seat.The angle that the passenger can regulate the chair back by seat angle adjustor is to the optimum position, obtain the most comfortable and be accustomed to most take angle.For the driver, can obtain the best visual field by the angle of regulating the chair back, and be easy to controls such as steering dish, pedal and gear lever.
At present, seat angle adjustor roughly can be divided into two big classes: a class is to adopt the leaf spring type governor motion of ratchet and pawl arrangement principle; Another kind of is the gear type governor motion that adopts the planetary gear transmission principle.
For the gear type recliner that adopts the planetary gear transmission principle, because therefore inevitable foozle, has certain clearance in the inside of this type of recliner.During use, this gap can cause Chair back big and with noise with respect to the swing of seat support fore-and-aft direction, and then influences the comfortableness of seat.
In order to eliminate above-mentioned gap, operated by rotary motion has the split type clearance eliminating mechanism of tiltedly carving in the existing gear type recliner, and simultaneously, this mechanism plays a part the pivoted arm wheel in the small teeth number difference planet gear transmission mechanism.But, adopt this structure to have two apparent in view problems: one, because the wedging parts are two split-type structurals, load mainly acts on the wedge, makes the contact site stress concentrate and the bigger distortion of generation; And then cause the interior area of contact of gear between movable part and the fixed part to reduce, and influence the monodentate stress, do not give full play to the high characteristics of joggled strength of small teeth number difference planet gear transmission; Two, adopt this split type clearance eliminating mechanism of tiltedly carving, in eccentric region, there is a large amount of spaces, thereby can causes the intensity instability of recliner, strength fluctuation is bigger.
The utility model content
At above-mentioned defective, the technical problem that the utility model solves is, a kind of seat angle adjustor of eliminating the gap is provided, and with when improving seat comfort, security, guarantees that recliner has high, stable strength character.
The seat angle adjustor that the utility model provides comprises the internal gear with ring gear, outer tooth plate, eccentric wheel, wedge and the driver part with external toothing, and wherein, described internal gear is used for fixedlying connected with the chair back, and the middle part of this internal gear is provided with the shaft shoulder; Described outer tooth plate is used for fixedlying connected with seat support, and the middle part of this outer tooth plate is provided with axle center hole; Described external toothing be meshed with ring gear and the described shaft shoulder and axle center hole between form the radial disbalance zone; Described eccentric wheel places in the described radial disbalance zone, and described eccentric wheel, internal gear and outer tooth plate constitute the small teeth number difference planet gear transmission mechanism; Described wedge places in the described radial disbalance zone; And eccentric wheel and wedge are in the gap between the engaging tooth of reaching of eliminating under the effect of peripheral force that elastic component applies between the axle center hole of described eccentric wheel and internal gear; Described driver part drives eccentric wheel or wedge, produces angular turn so that realize the outer relatively tooth plate of internal gear; Described eccentric wheel is whole SIMULATION OF ECCENTRIC ANNULAR, and fills up the forward eccentric region that forms between the axle center hole of the shaft shoulder of internal gear and outer tooth plate; Wedge places eccentric recess.
Preferably, the position of departing from the forward eccentric direction on the described eccentric wheel has the recess that holds wedge, and described wedge can circumferentially rotate in this recess.
Preferably, described elastic component is specially the wedging torsion spring, and has two axial legs that are provided with in the same way, and wherein, an axial leg is inserted in the wedge, and the sidewall of the nearly positive eccentric direction of another axial leg and described recess offsets.
Preferably, described recess have pit with the sidewall of wedging torsion axis to the leg place of offseting, the cross section of this pit is semicircular arc or rectangle.
Preferably, described wedging torsion spring and wedge are separately positioned on described eccentric both sides; The diapire of described eccentric recess has deep-slotted chip breaker, and two axial supporting legs of described wedging torsion spring cooperate with wedge and eccentric wheel after this deep-slotted chip breaker stretches out.
Preferably, the thickness of described wedge and described eccentric concave depth are suitable.
The seat that the utility model provides, comprise the hinged seat support and the chair back and place seat support and the chair back between seat angle adjustor, described seat angle adjustor adopts foregoing recliner.
After seat angle adjustor that the utility model provides and the seat assembling, its internal gear is fixedlyed connected with the chair back, outer tooth plate fixedlys connected with seat support that (assembly relation can be adjusted in theory, promptly, internal gear and seat support are fixed, outer tooth plate and the chair back fix), external toothing on the outer tooth plate and the engagement of the ring gear on internal gear back the shaft shoulder of internal gear with outside formation radial disbalance zone between the axle center hole of tooth plate; Eccentric wheel and wedge place in this radial disbalance zone and wedging under the flexible member effect.When needing the angle of the swiveling seat chair back, the passenger applies driving torque to driver part, drives eccentric wheel or wedge, thereby utilizes the operation principle of small teeth number difference planet gear transmission mechanism to realize the stepless adjustment of chair back angle reliably.After angle was set up, the peripheral force that elastic component applies acted on eccentric wheel and the wedge, and after eccentric wheel and wedge offseted with the shaft shoulder of the axle center hole wall of outer tooth plate and internal gear respectively, the gap can be eliminated, and then has improved the comfortableness of seat greatly.
When recliner was in the wedging state, the radially inside and outside profile of wedge was positioned at the outside of the radially inside and outside profile of eccentric wheel recess corresponding position; When big load act on the movable part internal gear and the elastic-plastic deformation of contact part after to a certain degree, wedge and internal gear central boss cylindrical, active force will make wedge produce circumferentially rotation between the interior circle of outer tooth plate, and when rotation direction is when overcoming the elastic force of elastic component, wedge will turn an angle along the shaft shoulder on the internal gear, and to be positioned at eccentric footpath, corresponding position to its profile inside, the inboard of outline, the lateral profile of eccentric wheel crush-zone contacts with circle in the outer tooth plate, the inboard profile of eccentric wheel crush-zone contacts with internal gear central boss cylindrical, at this moment, wedge will can not rotate again and stop eccentric throw further to reduce jointly with eccentric wheel, thereby guarantee that engagement engagement size improves the intensity of engagement in few tooth difference.Eccentric wheel fills up whole forward eccentric region, and self has high intensity, when the nearly step of load that the chair back and internal gear are subjected to strengthens, outer tooth plate axle center hole, the internal gear shaft shoulder and eccentric wheel produce the part plastic deformation, like this, the power that acts on the eccentric wheel can be shared on the eccentric whole profile, thereby improves the stress of each part, improve eccentric anti-pressure ability, improve the bulk strength of governor motion greatly.
In this bright preferred version, wedge places in the recess on the eccentric wheel, and both axial outer end faces are substantially flush, to reduce the axial dimension of recliner, improve its adaptability.
The seat angle adjustor that the utility model provides be fit to be produced in batches, and it is good to have an anufacturability, the characteristics that manufacturing cost is lower.Be applicable to the various seats that need to regulate chair back angle, be specially adapted to automotive seat.
Description of drawings
Fig. 1 and Fig. 2 show the assembling explosive view of the different angles of seat angle adjustor respectively;
Fig. 3 is the structure diagram of seat angle adjustor middle gear transmission mechanism described in the utility model;
Fig. 4 shows the position relation between wedge and the eccentric wheel;
Fig. 5 is the explosive view of assembly relation between wedge described in the utility model, eccentric wheel, wedging torsion spring and the internal gear;
Fig. 6 is that the A after each parts assembling shown in Fig. 5 is to view;
Fig. 7 shows the matching relationship between eccentric wheel and wedge and the axle center hole and the shaft shoulder;
Fig. 8 is the I portion enlarged drawing of Fig. 7;
Fig. 9 is the assembly relation explosive view that wedging torsion spring and wedge are separately positioned on eccentric both sides in the embodiment;
The outline drawing of Figure 10 seat described in the utility model.
Among the figure:
The specific embodiment
Specify present embodiment below in conjunction with Figure of description.
The nouns of locality such as described herein inboard, the outside are that axial line with seat angle adjustor is the benchmark definition, that is to say; near this axial line side is inboard; away from this axial line side is the outside, should be appreciated that the use of the aforementioned noun of locality should not limited to the claimed scope of present patent application.
In addition, the forward eccentric direction refers in the eccentric region the radially direction of bulk maximum herein, and the zone on the forward eccentric direction is called the forward eccentric region.
Referring to Fig. 1 and Fig. 2, wherein, Fig. 1 and Fig. 2 are respectively the assembling explosive view of the seat angle adjustor of making from different angles.Seat angle adjustor mainly eliminates parts by gear drive, gap and three major parts of driver part constitute.
Gear drive adopts engagement Gear Planet Transmission in few tooth difference single gear.Wherein, the internal gear 2 with ring gear 21 is used for fixedlying connected with the chair back, and the outer tooth plate 3 with external toothing 31 is used for fixedlying connected with seat support.Outer tooth plate 3 and internal gear all place sheath 1, the closing in of sheath 1 connects firmly together with outer tooth plate 3, after the assembling, the external toothing 31 of outer tooth plate 3 and 21 engagements of the ring gear of internal gear 2, the shaft shoulder 22 at internal gear 2 middle parts is inserted in the axle center hole 32 at outer tooth plate 3 middle parts, and the shaft shoulder 22 is with respect to axle center hole 32 eccentric settings and constitute the radial disbalance zone between the two.Eccentric wheel 4 places in this radial disbalance zone, and itself and ring gear 21 and external toothing 31 constitute the small teeth number difference planet gear transmission mechanisms, and the structure diagram of this transmission mechanism as shown in Figure 3.When operating torsional interaction in driver part 5, drive ring gears 21 and rotate by eccentric wheel 4, external toothing 31, thereby make outer tooth plate 3 rotate with respect to internal gear 2, the purpose of chair back angle is regulated in realization.Owing to have certain clearance between the engaging tooth, thereby can on backrest, produce corresponding gap, cause rocking of backrest, reduced the comfortableness of seat.Wedge 6 in this programme is in the gap of realizing under the peripheral force effect of wedging torsion spring 7 eliminating between each parts.
Referring to Fig. 4 and Fig. 5, Fig. 4 shows the position relation between wedge and the eccentric wheel; Fig. 5 is the explosive view of assembly relation between described wedge, eccentric wheel, wedging torsion spring and the internal gear.
Wedge 6 places in the recess 41 on the eccentric wheel 4, and both axial outer end faces are substantially flush; And wedge 6 can circumferentially rotate in eccentric region, and promptly the shaft shoulder 22 around internal gear 2 rotates; Be appreciated that the recess 41 of wedge 6 settings is used to reduce the axial dimension of recliner.Wedging torsion spring 7 have in the same way the axial leg 71 that is provided with and axially leg 71 '; During assembling, two axial legs of wedging torsion spring 7 need pretwist to change shape, axially leg 71 passes in the hole 62 that is inserted into behind the deep-slotted chip breaker 81 on the lock banking stop 8 on the wedge 6, axially deep-slotted chip breaker 81 backs of leg 71 ' also pass on the lock banking stop 8 offset with the inwall 49 relative with the big end of wedge of recess 41, be provided with on this inwall 49 with axial leg 71 ' half suitable garden arc 491 of external diameter, to improve the job stability of wedging torsion spring 7.
As shown in Figure 5,7 liang of legs 71 of wedging torsion spring and 71 ' between whole circle part have axial bending section 72.
Referring to Fig. 6, this figure is that the A after each parts assembling shown in Fig. 5 is to view.
The elastic deformation energy that the precommpression of wedging torsion spring 7 produces acts on wedge 6 and eccentric wheel 4 circumferentially turns to the wedging state to the path section of eccentric region respectively, and under this state, both surfaces, medial and lateral offset with the axle center hole 32 and the shaft shoulder 22 respectively.Need to prove that this wedging spring 7 also can adopt the elastic component of other versions, as long as can be all in the claimed scope of the application at the elastic force that wedging is provided under the non-adjustment state.
Referring to Fig. 7 and Fig. 8, Fig. 7 shows the matching relationship between eccentric wheel and wedge and the axle center hole and the shaft shoulder; Fig. 8 is the I portion enlarged drawing of Fig. 7.
Under the wedging state, line contacts between the inner surface of wedge 6 and the shaft shoulder 22, and contact wire is A '; Line contacts between the outer surface of wedge 6 and the axle center hole 32, and contact wire is B '; All the other gap, position contacts.Line contacts between the inner surface of eccentric wheel 4 and the shaft shoulder 22, and contact wire is A; Line contacts between the outer surface of eccentric wheel 4 and the axle center hole 32, and contact wire is B.As shown in the figure, the axial line of ring gear is O, is the axial line of the shaft shoulder 22; The axial line of external toothing 31 is O ', is the axial line of axle center hole 32.Contact wire A ', B ' between contact wire A, B between eccentric wheel 4 and axle center hole 32 and the shaft shoulder 22 and wedge 6 and axle center hole 32 and the shaft shoulder 22 lays respectively at the both sides of eccentric throw OO ' place straight line.So design is for the stress equalization of entire mechanism provides reliable assurance.In the present embodiment, eccentric wheel 4 with the shaft shoulder 22 mutually the inner surface of support segment be outer convex globoidal 42, to guarantee that Contact Pair between the two is the line contact; Equally, wedge 6 with the shaft shoulder 22 mutually the inner surface of support segment also be outer convex globoidal 63.
Further, the axial line O of contact wire A, the B between eccentric wheel 4 and axle center hole 32 and the shaft shoulder 22 and the shaft shoulder 22 is roughly in same plane; Contact wire A ', the B ' between wedge 6 and axle center hole 32 and the shaft shoulder 22 and the axial line O of the shaft shoulder 22 are also roughly in same plane.Like this, can make the gap elimination parts of wedging state have certain self-locking performance.
Be to be understood that, when the nearly step of load that the chair back and internal gear are subjected to strengthens, outer tooth plate axle center hole, the internal gear shaft shoulder and eccentric wheel produce the part plastic deformation, like this, the power that acts on the eccentric wheel can be shared on the eccentric whole profile, especially goes up the forward eccentric region, thereby improves the stress of each part, improve eccentric anti-pressure ability, improve the bulk strength of governor motion greatly.The engagement eccentric throw direction of ring gear 21 and external toothing 31 is corresponding to the highest position of eccentric wheel structure intensity, i.e. the maximum radial dimension portion of eccentric wheel 4; Preferably, the large end face 61 of wedge 6 reaches the direction that meshes the eccentric throw directions with inwalls recess 41 and large end face 61 opposite sides 49 skews of eccentric wheel 4, to strengthen the intensity of eccentric wheel 4, the bulk strength of raising governor motion.
When adjuster was in non-adjustment state, above-mentioned parts was in wedging state shown in Figure 7; At this moment, radially, two side profile of the recess 41 of eccentric wheel 4 are positioned at the profile inside of wedge 6.When the time spent of doing that is subjected to big load, the strain of contacted each part will make its self-locking state change, and under the effect of the axle center hole 32 of the shaft shoulder 22 of internal gear 2 and outer tooth plate 3, the effect that wedge 6 will overcome wedging torsion spring 7 produces circumferentially rotation; When wedge 6 turns to its two side profile when being positioned at the inside of 4 liang of side profile of eccentric wheel, the lateral profile 46 of eccentric wheel 4 recesses 41 contacts with the axle center hole 32 of outer tooth plate 3, the inboard profile 45 of eccentric wheel 4 recesses 41 contacts with the shaft shoulder 22 of internal gear 2, at this moment, wedge 6 no longer rotates and further diminishes with the eccentric wheel 4 common eccentric throws that stop, thereby guarantees that effective engagement of ring gear 21 and external toothing 31 improves the intensity of whole governor motion.
The turning cylinder 52 of driver part 5 is successively after endoporus, the endoporus 85 of lock banking stop 8, the centre bore 23 of internal gear 2, the sheath 1 of wedging torsion spring 7 pass, be installed on by circlip in the draw-in groove 53 of turning cylinder 52 external parts, another axle head of driver part 5 is after the centre bore 101 of seal cover 10 passes, be installed on by circlip in the draw-in groove 54 of this axle head, thereby to realize the axial location of each parts of seat angle adjustor described in the utility model.Driver part 5 axially is extended with first actuating arm 51 ' and second actuating arm 51, have on the eccentric wheel 4 first housing region 47 and second housing region 47 ', and along circumferential second housing region 47 ' the top and the small end of wedge 6 overlapping, as shown in Figure 6; The arc-shaped hole 86 of first actuating arm 51 ' on lock banking stop 8 passes in first housing region 47 that is placed on eccentric wheel 4, and offsets with the upper side wall 48 of first housing region 47; Second housing region 47 that the arc-shaped hole 86 of second actuating arm 51 on lock banking stop 8 ' pass is placed on wedge 6 small end below ' interior also offsets with the small end face 64 of wedge 6.
When regulating chair back angle, the operator needs clockwise as required or is rotated counterclockwise driver part 5: when clockwise rotating driver part 5, first actuating arm 51 on the driver part 5 ' promotion eccentric wheel 4 clockwise rotates, with the elastic force that overcomes wedging torsion spring 7 to remove wedge action, the driven wheel transmission mechanism realizes that outer tooth plate 3 clockwise rotates with respect to internal gear 2, regulates chair back angle.When rotating counterclockwise driver part 5, second actuating arm 51 on the driver part 5 promote second housing region 47 of wedges 6 ' small end face 64, with the elastic force that overcomes wedging torsion spring 7 to remove wedge action, as many as second actuating arm 51 and second housing region 47 ' upper side wall 48 ' when offseting, the driven wheel transmission mechanism realizes that outer tooth plate 3 rotates counterclockwise with respect to internal gear 2.
See also Figure 10, this figure is the outline drawing of seat described in the utility model.This seat comprise the hinged seat support and the chair back and place seat support and the chair back between seat angle adjustor 100, wherein, seat angle adjustor 100 adopts foregoing recliner, and the basic structure of the seat support and the chair back and annexation and prior art are identical, do not repeat them here.
To sum up, the seat angle adjustor that the utility model provides can be realized step-less adjustment, and Chair back has less clearance, and simultaneously, this recliner has good locking performance.The utility model both can be realized manual adjustments, can realize motorized adjustment again.
The above only is a preferred implementation of the present utility model, should be understood that, for those skilled in the art, under the prerequisite that does not break away from the utility model principle, can also make some improvements and modifications, such as shown in Figure 9, wedging torsion spring and wedge are separately positioned on described eccentric both sides, diapire at eccentric recess has deep-slotted chip breaker 410, and the leg of confession elasticity element passes to adapt to wedge is contained in by eccentric wheel recess 41, the shaft shoulder 22 of internal gear 2 and the last residing plane of the shaft shoulder thereof, this assembling mode in the space that outer tooth plate 3 axle center holes 32 are sealed; These improvements and modifications also should be considered as protection domain of the present utility model.
Claims (7)
1. seat angle adjustor comprises:
Internal gear with ring gear is used for fixedlying connected with the chair back, and the middle part of this internal gear is provided with the shaft shoulder;
Outer tooth plate with external toothing is used for fixedlying connected with seat support, and the middle part of this outer tooth plate is provided with axle center hole; Described external toothing be meshed with ring gear and the described shaft shoulder and axle center hole between form the radial disbalance zone;
Eccentric wheel places in the described radial disbalance zone, and described eccentric wheel, internal gear and outer tooth plate constitute the small teeth number difference planet gear transmission mechanism;
Wedge places in the described radial disbalance zone; And eccentric wheel and wedge are in the gap between the engaging tooth of reaching of eliminating under the effect of peripheral force that elastic component applies between the axle center hole of described eccentric wheel and internal gear; With
Driver part drives eccentric wheel or wedge, produces angular turn so that realize the outer relatively tooth plate of internal gear; It is characterized in that,
Described eccentric wheel is whole SIMULATION OF ECCENTRIC ANNULAR, and fills up the forward eccentric region that forms between the axle center hole of the shaft shoulder of internal gear and outer tooth plate; Described wedge places eccentric recess.
2. seat angle adjustor according to claim 1 is characterized in that the position of departing from the forward eccentric direction on the described eccentric wheel has the recess that holds wedge, and described wedge can circumferentially rotate in this recess.
3. seat angle adjustor according to claim 2 is characterized in that described elastic component is specially the wedging torsion spring, and have two axial legs that are provided with in the same way, wherein, an axial leg is inserted in the wedge, and the sidewall of the nearly positive eccentric direction of another axial leg and described recess offsets.
4. seat angle adjustor according to claim 3 is characterized in that, described recess have pit with the sidewall of wedging torsion axis to the leg place of offseting, the cross section of this pit is semicircular arc or rectangle.
5. according to claim 3 or 4 described seat angle adjustors, it is characterized in that described wedging torsion spring and wedge are separately positioned on described eccentric both sides; The diapire of described eccentric recess has deep-slotted chip breaker, and two axial supporting legs of described wedging torsion spring cooperate with wedge and eccentric wheel after this deep-slotted chip breaker stretches out.
6. seat angle adjustor according to claim 5 is characterized in that, the thickness of described wedge and described eccentric concave depth are suitable.
7. seat, comprise the hinged seat support and the chair back and place seat support and the chair back between seat angle adjustor, it is characterized in that described seat angle adjustor adopts as each described recliner in the claim 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920162374 CN201468560U (en) | 2009-07-04 | 2009-07-04 | Angle modulation apparatus for chair and chair with such angle modulation apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920162374 CN201468560U (en) | 2009-07-04 | 2009-07-04 | Angle modulation apparatus for chair and chair with such angle modulation apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201468560U true CN201468560U (en) | 2010-05-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920162374 Expired - Lifetime CN201468560U (en) | 2009-07-04 | 2009-07-04 | Angle modulation apparatus for chair and chair with such angle modulation apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201468560U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101941389B (en) * | 2009-07-04 | 2012-06-20 | 湖北中航精机科技股份有限公司 | Seat angle adjuster and seat with angle adjuster |
| CN103625318A (en) * | 2013-12-17 | 2014-03-12 | 湖北中航精机科技有限公司 | Adjustable chair and angle adjusting device thereof |
-
2009
- 2009-07-04 CN CN 200920162374 patent/CN201468560U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101941389B (en) * | 2009-07-04 | 2012-06-20 | 湖北中航精机科技股份有限公司 | Seat angle adjuster and seat with angle adjuster |
| CN103625318A (en) * | 2013-12-17 | 2014-03-12 | 湖北中航精机科技有限公司 | Adjustable chair and angle adjusting device thereof |
| CN103625318B (en) * | 2013-12-17 | 2015-11-04 | 湖北中航精机科技有限公司 | A kind of barbed chair and angle regulator thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100519 Effective date of abandoning: 20090704 |