CN206406779U - Seat angle adjustor and the seat with the seat angle adjustor - Google Patents

Abstract

The utility model discloses a kind of seat angle adjustor and the seat with the seat angle adjustor, the seat angle adjustor includes coulisse and ratchet, also include two the first sliding blocks and two the second sliding blocks, the circumference of the coulisse is uniformly provided with four chutes, to accommodate two first sliding blocks and two second sliding blocks respectively, the first sliding block described in two, the Central Symmetry of the relatively described coulisse of the second sliding block described in two；The inner circumferential of the ratchet has two radially projecting raised sections, the Central Symmetry of the relatively described ratchet in raised section described in two；Second sliding block is provided with convex portion, and when second sliding block is radially translated, the convex portion can support the raised section, so that second sliding block can not be engaged with the ratchet.By the optimization design to seat angle adjuster structure, the folding angles of seat can be increased, while the weight of seat angle adjustor can also effectively be controlled, and its intensity is ensured, improve the adaptability of seat angle adjustor.

Description

Seat angle adjustor and the seat with the seat angle adjustor

Technical field

The utility model is related to chair angle regulation technology field, and in particular to a kind of seat angle adjustor and with the seat The seat of recliner.

Background technology

Fig. 1 is refer to, Fig. 1 is a kind of structural representation of exemplary seat.

As illustrated, common seat includes backrest 10 and seat basin 20；Seat is in use, different in order to adapt to Demand, can carry out appropriate adjustment to the angle of backrest 10 and seat basin 20, especially for automotive seat, generally be adjusted by seat Angle device 30 ' realizes this function.

As illustrated, by seat angle adjustor, total regulation angle between the chair back and seat support is J, according to practical application need Ask, the requirement of some seats has a segment limit chair back and seat support to be locked out in the range of always regulation angle, that is to say, that no matter Whether lift release lever, chair back can not be all locked in the range of this, and the angle in the region is referred to as J1 in folding angles, figure and is The folding angles are represented, J2 represents that the chair back can be locked out in the angular range.

Please also refer to Fig. 2, Fig. 2 is a kind of existing exploded perspective view of seat angle adjustor.

Seat angle adjustor 30 ' include sheath 31, ratchet 32, unblock cam 33, sliding block 34, locking cam 35, central shaft 36, Back-moving spring 37 and coulisse 38.

Generally, the ratchet 32 of seat angle adjustor 30 is fixed as one with backrest 10, and coulisse 38 is fixed as one with seat basin 20 Body.Ratchet 32 can be rotated relative to coulisse 38, so as to adjust the angle of backrest 10 and seat basin 20.

Wherein, unblock cam 33, locking cam 35 and back-moving spring 37 are respectively provided with the centre bore run through for central shaft 36, And can be rotated under the drive of central shaft 36, locking cam 35 is generally aligned in the same plane with sliding block 34, and locking cam 35, which is located at, to be slided In the central slot of frid 38, sliding block 34 be located at the outer end of coulisse 38 chute in, and sliding block 34 only can in the chute edge Radially slide.

During locking, locking cam 35 is contradicted from locking face and sliding block 34 from locking face, the sliding block ratchet of the outer end of sliding block 34 with The ratchet ratchet engagement of ratchet 32, now ratchet 32 can not be rotated relative to coulisse 38 so that, the backrest 10 and seat basin of seat 20 relative position is fixed；Lockup state is kept by back-moving spring 37.

During unblock, when central shaft 36 applies the external torque opposite with back-moving spring 37, unblock cam 33 is rotated, and is driven Sliding block 34 in direction translational from chute to central shaft 36, then sliding block ratchet and ratchet ratchet are completely disengaged, now, and ratchet 32 can Center relative to coulisse 38 is rotated freely, so that, the angle of backrest 10 and seat basin 20 can be adjusted as needed.

Above-mentioned seat angle adjustor 30 realizes that there is seat folding angles J1 principle to be to set one section of light in the flank of tooth of ratchet 32 Face, in the range of this section of smooth surface, sliding block can not be engaged with ratchet 32, it is impossible to locking, you can realize folder function.

The seat angle adjustor 30 is provided between three sliding blocks, three sliding blocks in 120 ° of distributions, i.e., ratchet often rotates 120 ° of entrance Next cycle period, each sliding block has 17 teeth, takes 34 °, that is to say, that the angle that folding angles J1 and the chair back can be locked out J2 sums are spent, i.e., total regulation angle J is 120 ° -34 °=86 °.

In actual applications, generally requiring the folding angles of seat has a larger adjustable range, is calculated as above, existing Seat angle adjustor 30 folding angles J1 maximum only have 86 ° (now the only one of which position chair back can be locked out), it is such Design can not meet the demand of the bigger folding angles of client.

In order to which folding angles J1 scope of design is bigger, also have only set two sliding blocks a seat angle adjustor, but this The thickness of kind of design sliding block is big, to accommodate sliding block, and the thickness of matched coulisse, the thickness of ratchet are all very big, cause to adjust Angle device overall weight increase, is mismatched with light-weighted growth requirement.

In view of this, the structure of existing seat angle adjustor how is improved, with the basis of the folding angles of increase seat Effectively the weight of control recliner, is the current technical issues that need to address of those skilled in the art.

Utility model content

The purpose of this utility model is to provide a kind of seat angle adjustor and the seat with the seat angle adjustor, by seat The optimization design of chair recliner structure, can increase the folding angles of seat, while seat angle adjustor can also be controlled effectively Weight, and ensure its intensity, improve the adaptability of seat angle adjustor.

In order to solve the above technical problems, the utility model provides a kind of seat angle adjustor, including coulisse and ratchet, also wrap Two the first sliding blocks and two the second sliding blocks are included, the circumference of the coulisse is uniformly provided with four chutes, to accommodate two respectively First sliding block and two second sliding blocks, the first sliding block described in two, the relatively described coulisse of the second sliding block described in two Central Symmetry；

The inner circumferential of the ratchet has in two radially projecting raised sections, the relatively described ratchet in raised section described in two The heart is symmetrical；

Second sliding block is provided with convex portion, and when second sliding block is radially translated, the convex portion can be supported The raised section, so that second sliding block can not be engaged with the ratchet.

The seat angle adjustor that the utility model is provided, four are set to by the number of sliding block, along the circumferential uniform of coulisse, And it is divided into two kinds of structures of the first sliding block and the second sliding block, wherein, Central Symmetry of two second sliding blocks with respect to coulisse；In ratchet Two concave segments, and the two raised section phases are formed between raised section of the inner circumferential provided with two radially convex portions, two such raised section To the Central Symmetry of ratchet, that is to say, that the angular range of a raised section concave segment adjacent thereto is 180 °；Wherein, Second sliding block is provided with convex portion, and when the second sliding block is radially translated, the convex portion can support the raised section of ratchet, so that the Two sliding blocks can not be engaged with ratchet.

The seat angle adjustor operationally, if during sliding block is radially outward translated, the convex portion of the second sliding block and ratchet Raised section support, then the second sliding block is under the limitation of ratchet raised section, it is impossible to continuation radially outward translate, in locking shape State, makes the unblock cam that the sliding block of drive second is translated not rotate, correspondingly, the first sliding block is also at locking state, it is impossible to footpath To outside translation, so, sliding block can not be engaged with ratchet, so that folder function can be realized, that is to say, that the angle model of raised section Enclose the folding angles as seat, it is clear that the raised section can be arranged as required to approximate 180 ° of scope, make seat have compared with Big folding angles are to meet use demand；In addition, the seat angle adjustor is provided with four sliding blocks, the thickness of each sliding block can be smaller Design, correspondingly, the thickness of coulisse, the thickness of ratchet can smaller design, make recliner with lighter weight.It can be seen that, The seat angle adjustor can effectively control the weight of recliner on the basis of increase seat folding angles.

Optionally, when the convex portion of second sliding block is abutted with the raised section, the external tooth of second sliding block with Predetermined gap is kept between the internal tooth of the ratchet.

Optionally, second sliding block is in engagement with the ratchet, and the convex portion is located at two with the ratchet Inner peripheral surface between the raised section has prepsetting gap.

Optionally, the scope of the external tooth number of teeth of first sliding block and second sliding block is 15~25.

Optionally, it is equipped with boss on first sliding block and second sliding block；Also include unblock cam, have thereon Four sections of profiled holes, respectively with the boss cooperation of the second sliding block described in the boss and two of the first sliding block described in two, so as to First sliding block, the second sliding block radial translation are driven during the unblock cam rotation；The convex portion is located at the boss Outside.

Optionally, in addition to back-moving spring and central shaft, the back-moving spring is sheathed on the central shaft, and positioned at described The outside of coulisse, the outside of the coulisse is provided with boss, and the boss has opening towards the recessed of the coulisse center Groove, the outer hook of the back-moving spring is placed in the groove, and the outer hook is interference fitted with the groove.

Optionally, locking cam and unblock cam are also arranged with the central shaft, passes through mutual cooperation between the two Through hole and boss are set in together, in addition to adjustment ring, and it is described to prevent between the unblock cam and the ratchet Unlock cam and depart from the locking cam.

Optionally, in addition to sheath, the sheath includes first annular plate, the second annular slab and cylinder, the cylinder One end and the periphery wall of the first annular plate are affixed, and the internal perisporium of the other end and second annular slab is affixed；Described first Lateral surface, the periphery wall of the inwall of the inwall of annular slab and the cylinder respectively with the ratchet are fitted, second annular slab Inwall and the coulisse it is affixed.

Optionally, the equal symmetrical configuration of inner face of first sliding block and second sliding block.

The utility model also provides a kind of seat, including the seat support and the chair back that are hinged and is placed between seat support and the chair back Seat angle adjustor, the seat angle adjustor is using the seat angle adjustor described in any of the above-described.

Because foregoing seat angle adjustor has aforementioned techniques effect, the seat with the seat angle adjustor also has identical Technique effect, is repeated no more.

Brief description of the drawings

Fig. 1 is a kind of structural representation of exemplary seat；

Fig. 2 is a kind of existing diagrammatic cross-section of seat angle adjustor；

Fig. 3 is the exploded perspective view of seat angle adjustor shown in Fig. 2；

Fig. 4 provides seat angle adjustor a kind of diagrammatic cross-section of specific embodiment by the utility model；

Fig. 5 is a kind of exploded perspective view of angle of seat angle adjustor shown in Fig. 4；

Fig. 6 is the exploded perspective view of another angle of seat angle adjustor shown in Fig. 4；

Fig. 7 is removing ratchet, the structural representation of the seat angle adjustor of unblock cam in specific embodiment；

Fig. 8 is the structural representation of ratchet in Fig. 4；

Fig. 9 is the structural representation of back-moving spring, central shaft and coulisse cooperation in specific embodiment；

Figure 10 is the partial enlarged drawing at I positions in Fig. 9；

Figure 11 is the structural representation of sheath shown in Fig. 4

Figure 12 is the structural representation of the first sliding block in specific embodiment.

In Fig. 1-3：

The chair back 10, seat support 20, seat angle adjustor 30；

Sheath 31, ratchet 32 unlocks cam 33, sliding block 34, locking cam 35, central shaft 36, back-moving spring 37, chute Plate 38；

In Fig. 4-Figure 11：

Seat angle adjustor 30 ', sheath 31 ', ratchet 32 ', unblock cam 33 ', the first sliding block 34a ', the second sliding block 34b ', Locking cam 35 ', central shaft 36 ', back-moving spring 37 ', coulisse 38 ', adjustment ring 60；

First annular plate 311 ', the second annular slab 312 ', cylinder 313 ', raised section 321 ', concave segment 322 ', through hole 331 ', Profiled holes 332 ', convex portion 341b ', boss 342 ', projection 353 ', outer hook 371 ', protuberance 383 ', groove 384 ', inside groove section 3841 ', water jacket section 3842 '.

Embodiment

Core of the present utility model is to provide a kind of seat angle adjustor and the seat with the seat angle adjustor, by seat The optimization design of chair recliner structure, can increase the folding angles of seat, while seat angle adjustor can also be controlled effectively Weight, and ensure its intensity, improve the adaptability of seat angle adjustor.

In order that those skilled in the art more fully understand the utility model scheme, below in conjunction with the accompanying drawings and specific implementation The utility model is described in further detail for mode.

Fig. 4 to Fig. 6 is refer to, Fig. 4 provides a kind of section of specific embodiment of seat angle adjustor by the utility model and shown It is intended to；Fig. 5 is a kind of exploded perspective view of angle of seat angle adjustor shown in Fig. 4；Fig. 6 is another angle of seat angle adjustor shown in Fig. 4 The exploded perspective view of degree；Fig. 7 is removing ratchet, the structural representation of the seat angle adjustor of unblock cam in specific embodiment；Fig. 8 For the structural representation of ratchet in Fig. 4.

In the embodiment, that seat angle adjustor 30 ' includes sheath 31 ', ratchet 32 ', unblock cam 33 ', sliding block, locking is convex Wheel 35 ', central shaft 36 ', back-moving spring 37 ' and coulisse 38 '.

Wherein, unblock cam 33 ', locking cam 35 ' and back-moving spring 37 ' are set on central shaft 36 ', unlock cam 33 ', locking cam 35 ' and central shaft 36 ' can be with synchronous axial systems；Locking cam 35 ' is located in the center lumen of coulisse 38 ', sliding Block is located in the chute of the outer end of coulisse 38 ', and sliding block can only radially be translated in chute.

Sliding block has the locking face cooperated, in a latched condition, the locking face of sliding block and locking with locking cam 35 ' The locking face of cam 35 ' is contradicted, and the external tooth of sliding block is engaged with the internal tooth of ratchet 32 ', ratchet 32 ' is not rotated, to lock chair The relative position of the back of the body and seat support；During unblock, unblock cam 33 ' and synchronous turn of locking cam 35 ' are made by rotary middle spindle 36 ' Dynamic, the band movable slider of unblock cam 33 ' is radially-inwardly translated, and locking cam 35 ' reserves mobile space while rotating for sliding block, makes cunning Block is disengaged from ratchet 32 ', and ratchet 32 ' can be rotated relative to coulisse 38 ', with the angle between adjusting back and seat support.

In the embodiment, the number of sliding block is set to four, including two the first sliding block 34a ' and two the second sliding block 34b ', Correspondingly, coulisse 38 ' has been evenly distributed four chutes, wherein, two the first sliding block 34a ', two the second sliding block 34b ' are With respect to the Central Symmetry of coulisse 38 ', that is to say, that in 90 ° of cloth between the first adjacent sliding block 34a ' and the second sliding block 34b ' Put.

The inner circumferential of ratchet 32 ' has two radially projecting raised sections 321 ', so, shape between two raised sections 321 ' Into two concave segments 322 ', and the Central Symmetry of the relative ratchet 32 ' in two raised sections 321 ', that is to say, that a raised section 321 ' and its The angular range of an adjacent concave segment 322 ' is 180 °.

Convex portion 341b ', when the second sliding block 34b ' is radially translated, convex portion 341b ' are provided with the second sliding block 34b ' Raised section 321 ' can be supported, so that the second sliding block 34b ' can not be engaged with ratchet 32 '.

After being set as above, the seat angle adjustor 30 ' operationally, if during sliding block is radially outward translated, second slide Support block 34b ' convex portion 341b ' and ratchet raised section 321 ', then the second sliding block 34b ' is in the raised section of ratchet 32 ' 321 ' Under limitation, it is impossible to which continuation is radially outward translated, in locking state, the unblock cam 33 ' for translating the second sliding block of drive 34b ' It can not rotate, correspondingly, the first sliding block 34a ' is also at locking state, it is impossible to radially outward translate, so, sliding block and ratchet 32 ' can not engage, so that folder function can be realized, that is to say, that the angular range of raised section 321 ' is the angle folding of seat Degree, it is clear that the raised section 321 ' can be arranged as required to approximate 180 ° of scope, make seat have larger folding angles with Meet use demand；In addition, the seat angle adjustor is provided with four sliding blocks, the thickness of each sliding block can smaller design, correspondingly, cunning The thickness of frid 38 ', the thickness of ratchet 32 ' can smaller design, make recliner have lighter weight.It can be seen that, the seat is adjusted Angle device 30 ' can effectively control the weight of recliner on the basis of increase seat folding angles.

In specific scheme, when the second sliding block 34b ' convex portion 341b ' is abutted with the raised section 321 ' of ratchet 32 ', second Predetermined gap is maintained between sliding block 34b ' external tooth and the internal tooth of ratchet 32 '.In this manner it is ensured that in the projection of ratchet 32 ' In the range of section 321 ', sliding block can not be engaged with ratchet 32 ', it is to avoid situation about engaging occur because of the mismachining tolerance of parts, Ensure the reliability of recliner.

Specifically, the predetermined gap can be arranged on more than 0.2mm；It is appreciated that the predetermined gap according to the actual requirements Can flexibly it set.

In specific scheme, the second sliding block 34b ' is in engagement with ratchet 32 ', that is to say, that ratchet 32 ' is turned to When second sliding block 34b ' is in the range of its concave segment 322 ', the second sliding block 34b ' convex portion 341b ' and ratchet 32 ' is convex positioned at two The inner peripheral surface between section 321 ' is played, i.e., there is prepsetting gap between concave segment 322 '.In this way, to ensure in locking angular range Interior, the second sliding block 34b ' convex portion 341b ' will not be interfered with the concave segment 322 ' of ratchet 32 ', it is to avoid the nothing because of both interference Method realizes engaging for sliding block and ratchet 32 '.The prepsetting gap can be set according to actual conditions.

In specific scheme, the first sliding block 34a ' and the second sliding block 34b ' number of teeth are at 15~25, so that each sliding block With the suitable number of teeth, compared with two sliding blocks or three sliding blocks of background technology, four sliding blocks, each cunning are provided with the program The number of teeth of block is relatively small to be set, it is possible to decrease the thickness of sliding block, but still is able to ensure always engaging for all sliding blocks and ratchet 32 ' The number of teeth, to ensure intensity.More specifically, the number of teeth of each sliding block may be designed as 21 in this programme.

In specific scheme, unblock cam 33 ' is to be engaged by its profiled holes 332 ' with the boss 342 ' of sliding block come band What movable slider was radially translated, wherein, the concrete structure core point not of the present utility model of profiled holes 332 ' is referred to existing Technology design.

That is, being equipped with boss 342 ' on the first sliding block 34a ' and the second sliding block 34b ', it is clear that unblock cam 33 ' Provided with four sections of profiled holes 332 ', it is engaged with the boss 342 ' respectively with four sliding blocks.Obviously, the second sliding block 34b's ' is convex Portion 341b ' should be located at boss 342 ' outside set, so when it is moved radially outward, could at first with ratchet 32 ' Raised section 321 ' is abutted.

With reference to Fig. 2, in existing design, back-moving spring 37 is arranged on to the inner side of recliner, that is, coulisse 38 and spine Between wheel 32, need to open up the cavity for accommodating back-moving spring 37 at the middle part of coulisse 38, due to back-moving spring 37 diameter compared with Greatly, so the cavity at the middle part of coulisse 38 must also design larger diameter, so cause the overall size of recliner larger, no Meet the demand of lightweight development.In addition, the outer hook needs of back-moving spring 37 are affixed with coulisse 38, so that central shaft 36 rotates When can compression reseting spring 37, existing design is the Design Orientation hole on coulisse 38, so, when recliner immerse application After liquid, coating liquid can enter the inside of recliner from positioning hole 382, and associated components performance is impacted.

Therefore, set location herein to back-moving spring and being improved with the fixed connection mode of coulisse.

Please also refer to Fig. 9 and Figure 10, Fig. 9 is the knot of back-moving spring, central shaft and coulisse cooperation in specific embodiment Structure schematic diagram；Figure 10 is the partial enlarged drawing at I positions in Fig. 9.

In the embodiment, back-moving spring 37 ' is arranged to the outside of coulisse 38 ', in the outside of coulisse 38 ' provided with prominent There is groove 384 ' of the opening towards the center of coulisse 38 ', the outer hook 371 ' of back-moving spring 37 ' is placed on the portion of rising, jut Groove 384 ', and outer hook 371 ' and the interference fit of groove 384 '.

As above, back-moving spring 37 ' is located to the outside of coulisse 38 ', the inside that back-moving spring 37 ' is not take up recliner is empty Between, it can avoid opening up the cavity for accommodating back-moving spring 37 ' in the inner side of coulisse 38 ', so, the diameter of coulisse 38 ' can be with Smaller design, so as to reduce the overall dimensions of recliner, correspondingly, weight also mitigates, and meets the need of seat lightweight development Ask, the reduction of recliner overall dimensions in addition also saves material, helps to reduce cost；Meanwhile, in the outside of coulisse 38 ' Portion is conformed with, jut is provided with groove 384 ' of the opening towards the center of coulisse 38 ', the outer hook 371 ' of back-moving spring 37 ' It is placed in the groove 384 ', has so evaded and set through hole on coulisse 38 ' to coordinate the structure of outer hook 371 ', it is to avoid Coating liquid enters to be impacted inside recliner to associated components, helps to ensure the performance of recliner.

In specific scheme, the outside of coulisse 38 ' is circumferentially arranged with several protuberances 383 ', these protuberances 383 ' It can be engaged with the through hole of seat support gusset piece.

During specific assembling, coulisse 38 ' is first sleeved on one with seat support gusset piece by the cooperation of protuberance 383 ' and through hole Rise, be then welded and fixed again.That is, when being commonly designed, the coulisse 38 ' and seat support of seat angle adjustor are affixed, correspondingly, Ratchet 32 ' is affixed with the chair back, and ratchet 32 ' and coulisse 38 ' can be relatively rotated, with the angle between adjusting back and seat support.

So, the foregoing jut for setting groove 384 ' can be from one in several protuberances 383 ', in this way, can Avoid, in the special processing jut in the outside of coulisse 38 ', procedure of processing being simplified, processing cost is reduced.It will be appreciated, of course, that If the special groove for setting independent jut to open up receiving back-moving spring 37 ' is also feasible.

It should also be noted that, schematically illustrating knot of the outside of coulisse 38 ' provided with four protuberances 383 ' in figure Structure, it will be appreciated that the number of protuberance 383 ' can need condition for peace to set according to actual cooperation, it is not limited to institute in figure Show.

Wherein, the interference fit of outer hook 371 ' and groove 384 ' can be realized in several ways, relatively simplely, outside The size of hook 371 ' is slightly larger than the size of groove 384 ', during assembling, and outer hook 371 ' is squeezed into groove 384 '.

Specifically, the groove 384 ' of coulisse 38 ' includes inside groove section 3841 ' and water jacket section 3842 ', and inside groove section 3841 ' is leaned on Nearly central shaft 36 '；In axis projection face, the width of water jacket section 3842 ' is tapered radially inward.

During adjusting back and angle of seat, when central shaft 36 ' rotates, meeting compression reseting spring 37 ', and reset Spring 37 ' can be produced to center of circle direction during continuous compression, be towards the pulling force in the direction of central shaft 36 ', and incite somebody to action The water jacket section of groove 384 ' 3842 ' is designed as the small structure of outer imperial palace, can stop outer hook 371 ', simultaneously as outer hook 371 ' and Groove 384 ' is interference fitted, and can avoid pulling back-moving spring 37 '.

As above after designing, the outer hook 371 ' of back-moving spring 37 ' can pass through following manner with the groove 384 ' of coulisse 38 ' Assembling；First, when setting, the original state of the outer hook 371 ' of back-moving spring 37 ' is wide for what is be adapted with inside groove section 3841 ' Structure, during assembling, outer hook 371 ' is stretched into water jacket section 3842 ' from inside groove section 3841 ', then firmly back-moving spring is pressed down against 37 ' outer hook 371 ', makes its flattening deformation, and the full whole groove 384 ' of filling forms structure as shown in Figure 10, so, resetted The outer hook 371 ' of spring 37 ' can be interference fitted with the formation of groove 384 ' of coulisse 38 ', it is to avoid the outer hook of back-moving spring 37 ' 371 ' come off.

Specifically, the water jacket section 3842 ' of groove 384 ' in axis projection face in funnel shaped.It should be appreciated that the water jacket Section 3842 ' can also be other shapes, as long as its width is tapered radially inward.

It refer again to Fig. 4 to Fig. 7, projection 353 ' and through hole that unblock cam 33 ' and locking cam 35 ' pass through mutual cooperation 331 ' are set in together.

In the embodiment, adjustment ring 60 is additionally provided with, wherein, adjustment ring 60 is located between unblock cam 33 ' and ratchet 32 ', To prevent unblock cam 33 ' from departing from locking cam 35 '.

In specific scheme, unblock cam 33 ' is provided with some through holes 331 ' circumferentially arranged, each through hole 331 ' Centre distance of the heart away from unblock cam 33 ' is equal, that is to say, that each through hole 331 ' is located on same circumference, and correspondingly, locking is convex The one-to-one some projections 353 ' in and position consistent with the number of through hole 331 ', during assembling, locking cam 35 ' are set on wheel 35 ' Each projection 353 ' be each passed through unblock cam 33 ' each through hole 331 ', both are assembled.

In order to ensure unblock cam 33 ' and locking cam 35 ' can be well matched with synchronous axial system, projection 353 ' is generally With certain thickness, so, for fear of projection 353 ', can exist between unblock cam 33 ' and ratchet 32 ' between certain axial direction Gap, if the mismachining tolerance of ratchet 32 ', unblock cam 33 ' and locking cam 35 ' is larger, it is easy to cause unblock after mounting Cam 33 ' is moved axially between locking cam 35 ' and ratchet 32 ', and is departed from locking cam 35 ', and influence recliner is just Often use, and the problem can be solved after adjustment ring 60 is set.

The mismachining tolerance of each parts of seat angle adjustor 30 ' is compensated by adjustment ring 60, it is ensured that unblock cam 33 ' and lock Only cam 35 ' without departing from, can synchronous axial system, so, because the design of adjustment ring 60, each part of recliner can be reduced Required precision, during assembling product, selects the adjustment ring of respective thickness to adjust between axial direction by the actual mated condition of each part Gap, enables recliner normally to use, and the design of adjustment ring 60 allows each component dimensional tolerances of recliner suitably to amplify, drop Low difficulty of processing, correspondingly reduces processing cost.The structure design of the seat angle adjustor 30 ' is same reduction processing cost When be able to ensure that functional reliability.

During concrete operations, the machining accuracy of each parts of seat angle adjustor 30 ' can be reduced suitably, in assembling product When, it is how many to need the thickness of adjustment after the actual cooperation of every product of detection between unblock cam 33 ' and ratchet 32 ', according to this Thickness processes adjustment ring 60, and adjustment ring 60 is assembled in corresponding product, to ensure unblock cam 33 ' and locking cam 35 ' without departing from, can synchronous axial system, to ensure the normal work of seat angle adjustor 30 '.

It refer in Fig. 3, existing design, sheath 31 has in two of two inner ring surfaces of two relative inner ring surfaces and connection Step transition between side face, two inner peripheral surfaces a, inner ring surface of sheath 31 is fitted with the lateral surface of ratchet 32, another inner ring Face is fitted with the lateral surface of coulisse 38, and perisporium of two inner peripheral surfaces just with ratchet 32, coulisse 38 is fitted, wherein sheath 31 It is affixed with coulisse 38.

As shown in figure 3, A1 positions are the FX of sheath 31 and coulisse 38, when ratchet 32 is by lateral external force, The A2 positions that side force is fitted by sheath 31 with ratchet 32 transmit the force to sheath 31, and foregoing sheath 31 is consolidated with coulisse 38 Determine the fulcrum that region A1 positions are the stress of sheath 31, fulcrum force A1 and sheath 31 stress point A2 are apart from each other, easily Flexural deformation is produced, causes the intensity of sheath 31 not enough, the reliability that influence seat angle adjustor 30 works.

Therefore, the structure to sheath have also been made improvement herein, it refer to Fig. 4 and combine Figure 11 understandings, wherein, Tu11Wei The structural representation of sheath shown in Fig. 4.

In the embodiment, sheath 31 ' includes first annular plate 311 ', the second annular slab 312 ' and cylinder 313 ', wherein, cylinder One end of body 313 ' and the periphery wall of first annular plate 311 ' are affixed, and the internal perisporium of the other end and the second annular slab 312 ' is affixed, The cross section of sheath 31 ' is substantially in Z fonts；The inwall of first annular plate 311 ' and the inwall of cylinder 313 ' respectively with ratchet 32 Lateral surface, periphery wall laminating, the inwall and coulisse 38 of the second annular slab 312 ' be affixed, it is clear that the second annular slab 312 ' and Medial surface (towards the side of the ratchet 32) connection of coulisse 38.

After being set as above, the medial surface of the inwall and coulisse 38 of the second annular slab 312 ' of sheath 31 ' is affixed, such as Fig. 3 Shown, the FX of sheath 31 ' and coulisse 38 is B positions, and when ratchet 32 is by lateral external force, side force passes through sheath 31 ' first annular plate 311 ' transmits the force to sheath 31 ', and the FX B positions of foregoing sheath 31 ' and coulisse 38 are The fulcrum of the stress of sheath 31 ', comparison diagram 3 and Fig. 4, after above-mentioned sheath 31 ', the stress point and fulcrum force of sheath 31 ' it Between distance substantially shorten, therefore the moment of flexure that sheath 31 ' is subject to is smaller, can be provided under identical material to ratchet 32 higher power with The side force that resistance sheath 31 ' is subject to.

Comparison diagram 4 and Fig. 3 can also be seen that after the sheath 31 ' using said structure, the volume of sheath 31 ' substantially compared with It is small, it is necessary to material it is few, both save material cost, additionally aid and reduce the overall weight of seat angle adjustor 30.

In specific scheme, the second annular slab 312 ' and the coulisse 38 of sheath 31 ' are fixed by way of welding, simply Reliably；More specifically, both can be by the way of laser welding.

In specific scheme, the first sliding block 34a ' and the second sliding block 34b ' inner face symmetrical configuration, the first sliding block 34a ' Structure refer to Figure 12 understandings, the second sliding block 34b ' corresponded, and both differ only in previously mentioned second is slided It is on block 34b ' to be provided with a convex portion 341b ' more.

Because the outer end of sliding block is the external tooth with the cooperation of ratchet 32 ', the inner is the mating surface coordinated with locking cam 35 ', In existing design, the inner of sliding block is usually unsymmetric structure, and the both sides of seat are designed with recliner, like this, is just needed Distinguish the part that slide block structure is the recliner on the left of seat, or the recliner on the right side of seat part, in this way, not only increasing Number of molds is added, and has easily been mixed up during assembling, if the sliding block of the left and right sides is anti-loaded, then recliner can have been caused to fail.

Therefore, the inner face of sliding block is designed as into symmetrical structure in this programme, in this way, the symmetrical configuration of sliding block, so exists Only need to a slider mould during production, and the problem of be not in wrongly installed during assembling, on the one hand reduce production cost, On the other hand efficiency of assembling and assembly reliability are improved.

The utility model also provides a kind of seat, including the chair back, seat support and seat angle adjustor, and the seat angle adjustor is upper Seat angle adjustor described in text.

Because above-mentioned seat angle adjustor has above-mentioned technique effect, so the seat including the seat angle adjustor also has phase Same technique effect, will not be repeated here.Above to seat angle adjustor provided by the utility model and with the chair angle modulation The seat of device is described in detail.Specific case used herein is carried out to principle of the present utility model and embodiment Illustrate, the explanation of above example is only intended to help and understands method of the present utility model and its core concept.It should be pointed out that For those skilled in the art, can also be to this reality on the premise of the utility model principle is not departed from Some improvement and modification are carried out with new, these are improved and modification is also fallen into the utility model scope of the claims.

Claims (10)

1. seat angle adjustor, including coulisse and ratchet, it is characterised in that also slided including two the first sliding blocks and two second Block, the circumference of the coulisse is uniformly provided with four chutes, to accommodate two first sliding blocks and two described second respectively Sliding block, the first sliding block described in two, the Central Symmetry of the relatively described coulisse of the second sliding block described in two；

The inner circumferential of the ratchet has two radially projecting raised sections, the center pair of the relatively described ratchet in raised section described in two Claim；

Second sliding block is provided with convex portion, when second sliding block is radially translated, and the convex portion can be supported described Raised section, so that second sliding block can not be engaged with the ratchet.

2. seat angle adjustor according to claim 1, it is characterised in that the convex portion of second sliding block with it is described convex When playing section abutting, predetermined gap is kept between the external tooth of second sliding block and the internal tooth of the ratchet.

3. seat angle adjustor according to claim 2, it is characterised in that second sliding block is in the ratchet and engaged The inner peripheral surface being located between raised section described in two of state, the convex portion and the ratchet has prepsetting gap.

4. seat angle adjustor according to claim 1, it is characterised in that first sliding block and second sliding block it is outer The scope of the tooth number of teeth is 15~25.

5. the seat angle adjustor according to claim any one of 1-4, it is characterised in that first sliding block and described second Boss is equipped with sliding block；Also include unblock cam, thereon with four sections of profiled holes, respectively with described in the first sliding block described in two The boss of second sliding block described in boss and two coordinates, and first sliding block, institute are driven during so as to the unblock cam rotation State the second sliding block radial translation；The convex portion is located at the outside of the boss.

6. the seat angle adjustor according to claim any one of 1-4, it is characterised in that also including back-moving spring and center Axle, the back-moving spring is sheathed on the central shaft, and positioned at the outside of the coulisse, the outside of the coulisse is provided with convex Platform, the boss has groove of the opening towards the coulisse center, and the outer hook of the back-moving spring is placed in the groove, And the outer hook is interference fitted with the groove.

7. seat angle adjustor according to claim 6, it is characterised in that be also arranged with the central shaft locking cam and Cam is unlocked, is set in together between the two by the through hole and boss of mutual cooperation, in addition to adjustment ring, it is located at the solution Lock between cam and the ratchet, to prevent the unblock cam from departing from the locking cam.

8. the seat angle adjustor according to claim any one of 1-4, it is characterised in that also including sheath, the sheath bag First annular plate, the second annular slab and cylinder are included, one end of the cylinder and the periphery wall of the first annular plate are affixed, another End and the internal perisporium of second annular slab are affixed；The inwall of the first annular plate and the inwall of the cylinder respectively with it is described The lateral surface of ratchet, periphery wall laminating, the inwall and the coulisse of second annular slab are affixed.

9. the seat angle adjustor according to claim any one of 1-4, it is characterised in that first sliding block and described second The equal symmetrical configuration of inner face of sliding block.

10. seat, including the seat support and the chair back that are hinged and the seat angle adjustor being placed between seat support and the chair back, its feature exist In the seat angle adjustor uses seat angle adjustor as claimed in any one of claims 1-9 wherein.