A kind of regulator for chair back angle
Technical field
The present invention relates to seating art field, particularly a kind of regulator for chair back angle.
Background technology
At present, be installed in the seat of vehicle both at home and abroad for the seat angle adjustor of vehicle, by seat angle adjustor, back of seat can carry out angular adjustment relative to seat cushion.
Recliner as vital safety mechanisms, in collision case, recliner should be able to bear act on seat and thus the impulsive force be applied in recliner, and should not there is large distortion or destruction.In recent years, the raising required along with seat safety performance and operability, needs angle regulator for automobile chair can bear higher load, more easily operating mode and assemble mode more easily.
In functional, on current manned vehicle market, the unblock triggering mode of chair backrest angle adjuster is generally handle and unlocks or handwheel unblock, because the handle of binary pair or handwheel are outside outstanding recliner substantially, therefore, no matter be the unlocking manner of joystick type or the unlocking manner of handwheel type, shortcoming is all that binary pair handle or handwheel all can take seat unit design space and design cost, and the operational space of passenger exists limitation.
In configuration aspects: 1, in the existing recliner in market, the locking tooth plate 1 of most recliner inside is mostly two pieces or three pieces (see Fig. 1, Fig. 2 and Fig. 3).The quantity of the safe static strength of recliner and the inner locking tooth plate 1 of recliner is closely related, and when other parameter constants, the quantity of locking tooth plate 1 is more, and recliner absolute strength is larger.2, see Fig. 1, Fig. 2 and Fig. 3, the quantity of locking tooth plate 1 is confined to the reason of two to three pieces mainly: the mode that recliner Inner Constitution most on market adopts face cam 2 to rotate drives locking tooth plate 1 to move, locking tooth plate 1 tooth of locking is engaged with the lock tooth on gear ring 3, carry out locking, and locking tooth plate 1 is driven by a pair torsion spring 4 when lockup state.During unblock, rely on binary pair handle or handwheel to drive face cam 2 to rotate, make locking tooth plate 1 tooth of locking depart from the lock tooth on gear ring 3 and engage, unlock.Due to limited space, face cam 2, when Plane Rotation, is difficult to ensure enough inner spaces and makes locking and the release simultaneously of more than three pieces locking tooth plates 1.
Summary of the invention
Technical matters to be solved by this invention is for the problem existing for existing recliner and provides a kind of regulator for chair back angle, when this regulator for chair back angle uses, only need with finger flicking recliner button, can unlock recliner and angular adjustment is carried out to back of seat, release-push, can make recliner locking, back of seat angle is in stationary state.Regulator for chair back angle of the present invention can greatly reduce the volume of back of seat unlock trigger, and unlocking manner is simple and convenient, meets human engineering.
Technical matters to be solved by this invention can be achieved through the following technical solutions:
A kind of regulator for chair back angle, comprising:
The one recliner adapter plate being arranged on seat cushion side;
The one recliner tooth plate being arranged on seat back side, described recliner tooth plate is connected with described recliner adapter plate, in described recliner tooth plate, have an internally toothed annulus;
At least onely between described recliner adapter plate and recliner tooth plate, make radial reciprocating locking tooth plate, the outer rim of described locking tooth plate has locking tooth, and described locking tooth is made internal tooth section corresponding with the internally toothed annulus on described recliner tooth plate in radial reciprocatory movement at described locking tooth plate and is engaged and drop out of gear; It is characterized in that,
Also comprise one and carry out along described recliner axis the axial cam that both direction moves, described axial cam, carrying out along described recliner axis driving described locking tooth plate to carry out radial crank motion when both direction is moved, makes the internal tooth section corresponding with the internally toothed annulus on described recliner tooth plate of the locking tooth on described locking tooth plate engage and drop out of gear.
In a preferred embodiment of the invention, this regulator for chair back angle also comprises a reply wind spring, described reply wind spring is compress energy storage when described axial cam moves towards first direction along described recliner axis by External Force Acting, and the described axial cam of release promotion moves along described recliner axis towards the second direction contrary with first direction when described axial cam loses External Force Acting; When axial cam moves towards first direction, described locking tooth plate inwardly moves, the internal tooth section drop out of gear that locking tooth on locking tooth plate is corresponding with on the internally toothed annulus on described recliner tooth plate, when axial cam moves towards second direction, drive described locking tooth plate outwards to move, the internal tooth section that the locking tooth on locking tooth plate is corresponding with on the internally toothed annulus on described recliner tooth plate engages.
In a preferred embodiment of the invention, described axial cam offers one first reply wind spring and takes up hole near the center, one end of described recliner adapter plate, and be provided with at the side center of the relative recliner tooth plate of described recliner adapter plate one second reply wind spring take up hole, described second reply wind spring take up Kong Kongdi center be provided with reply wind spring take up post, one end of described reply wind spring is accommodated in described first reply wind spring and takes up in hole, the other end of this reply wind spring is accommodated in described second and replys wind spring and to take up in hole and be enclosed within described reply wind spring and take up on post.
In a preferred embodiment of the invention, this regulator for chair back angle also comprises one and is arranged on returning spring sheet between described recliner adapter plate and recliner tooth plate, described returning spring sheet is connected with described locking plate, when axial cam moves towards first direction, described locking tooth plate is driven inwardly to move.
In a preferred embodiment of the invention, described axial cam outer rim have one section drive the first camming surface of outwards moving of described locking tooth plate and with the first camming surface coordinate form the inside motion space of described locking tooth plate the second camming surface, in order to be connected the 3rd camming surface of the first camming surface and the second camming surface and axial cam axial motion to be played to the face of cylinder of guide function; Wherein the first camming surface, the second camming surface, the 3rd camming surface and the face of cylinder are all coaxially arranged, distance between first camming surface and the central axis of axial cam is greater than the distance between the second camming surface and the central axis of axial cam, and the distance between the second camming surface and the central axis of axial cam is greater than the distance between the face of cylinder and the central axis of axial cam; 3rd camming surface is cambered surface; Have a retaining face between described second camming surface and the face of cylinder, the terminal surface on the described face of cylinder is button cover.
In a preferred embodiment of the invention, the built-in hole of described returning spring sheet, move for described axial cam, the outer rim of this returning spring sheet is provided with the spring hook tabs matched with described locking tooth plate quantity, each locking tooth plate offers the snap hook film perforation that an ammunition feed spring hook segment inserts, and described spring hook tabs is inserted in described snap hook film perforation.
Owing to have employed technical scheme as above, when this regulator for chair back angle uses, only need, with finger flicking recliner button, to unlock recliner and carry out angular adjustment to back of seat, release-push, can make recliner locking, back of seat angle is in stationary state.Regulator for chair back angle of the present invention can greatly reduce the volume of back of seat unlock trigger, and unlocking manner is simple and convenient, meets human engineering.
Accompanying drawing explanation
Fig. 1 is the existing recliner structure diagram with two pieces of locking tooth plates.
Fig. 2 is the existing recliner structure diagram with three pieces of locking tooth plates.
Fig. 3 is the existing recliner motion simplified schematic diagram with three pieces of locking tooth plates.
Fig. 4 is the regulator for chair back angle exploded perspective view of the embodiment of the present invention 1.
Fig. 5 is the structural representation of axial cam in the regulator for chair back angle of the embodiment of the present invention 1.
Fig. 6 is the schematic diagram that the regulator for chair back angle of the embodiment of the present invention 1 is in lockup state.
Fig. 7 is the regulator for chair back angle of the embodiment of the present invention 1 when being in lockup state, the internally toothed annulus engagement schematic diagram on a locking tooth plate and recliner tooth plate.
Fig. 8 is the A-A cutaway view of Fig. 7.
Fig. 9 is that the regulator for chair back angle of the embodiment of the present invention 1 is replied wind spring when being in lockup state and is in release position schematic diagram.
Figure 10 is the schematic diagram that the regulator for chair back angle of the embodiment of the present invention 1 is in released state.
Figure 11 is the working state schematic representation of the spring hook tabs on the returning spring sheet in the embodiment of the present invention 1, in figure, bold portion is the Pre strained state schematic diagram that regulator for chair back angle is in lockup state, and dotted portion is the working state schematic representation that regulator for chair back angle is in released state.
Figure 12 is that the regulator for chair back angle of the embodiment of the present invention 1 is replied wind spring when being in released state and is in energy accumulating state schematic diagram.
Figure 13 is the regulator for chair back angle of the embodiment of the present invention 1 when being in released state, the internally toothed annulus drop out of gear view on a locking tooth plate and recliner tooth plate.
Figure 14 is the A-A cutaway view of Figure 13.
Figure 15 is that the regulator for chair back angle of the embodiment of the present invention 2 is from the exploded perspective view viewed from a direction.
Figure 16 is that the regulator for chair back angle of the embodiment of the present invention 2 is from the exploded perspective view viewed from another direction.
Figure 17 is the regulator for chair back angle structure diagram of the embodiment of the present invention 3.
Figure 18 is the regulator for chair back angle structure diagram of the embodiment of the present invention 4.
Detailed description of the invention
Regulator for chair back angle structure and working principle of the present invention is described in detail below in conjunction with the drawings and specific embodiments.
Embodiment 1
See the regulator for chair back angle provided in Fig. 4, figure, comprise the recliner tooth plate 200 that a recliner adapter plate 100 being arranged on seat cushion side and are arranged on seat back side; Be connected by a shroud ring 300 between recliner adapter plate 100 with recliner tooth plate 200.
Recliner adapter plate 100 that face 110 relative to recliner tooth plate 200 is evenly equipped with four pieces of projections 111, the passage 112 that locking tooth plate 400 moves is formed between adjacent two pieces of projections 111, totally four, passage 112, one piece of locking tooth plate 400, totally four pieces of locking tooth plates 400 are placed in each passage 112.Be provided with one in addition to reply wind spring take up hole 113 at that Ge Mian 110 center of the relative recliner tooth plate 200 of recliner adapter plate 100, take up Kong113Kong Di center at reply wind spring and be provided with and reply wind spring and take up post 114.
Recliner tooth plate 200 that face 210 relative to recliner adapter plate 100 is provided with in an internally toothed annulus 220(Fig. 4 and does not illustrate, can see 6 to Fig. 8), uniformly on internally toothed annulus 220 being provided with four sections of internal tooth sections 221, can certainly whole circle be all internal tooth.Each internal tooth section 221 is positioned at a passage 112 and corresponding one piece of locking tooth plate 400.Separately offer a centre hole 230 at the center of recliner tooth plate 200.
The outer rim of each locking tooth plate 400 is provided with locking tooth 410, and offers a snap hook film perforation 420 on each locking tooth plate 400.
See Fig. 5, axial cam 500 outer rim have one section drive locking tooth plate 400 outwards motion camming surface 510 and with camming surface 510 coordinates form the inside motion space of locking tooth plate 400 camming surface 520, in order to be connected the camming surface 530 of camming surface 510,520 and axial cam 500 axial motion to be played to the face of cylinder 540 of guide function; Camming surface 510,520,530 and the face of cylinder 540 are all coaxially arranged, and all orthogonal arrangement of camming surface 510,520,530, corresponding to four pieces of locking tooth plates 400.Each face in the camming surface 510 and distance central axis 560 that be greater than camming surface 530 and axial cam 500 between all equal with the distance between the central axis 560 of axial cam 500, each face in camming surface 530 is also equal with the distance between the central axis 560 of axial cam 500.
Each face in camming surface 530 and the distance between the central axis 560 of axial cam 500 are greater than the distance between the central axis 560 of the face of cylinder 540 and axial cam 500.Camming surface 520 is cambered surface; Have a retaining face 570 between camming surface 520 and the face of cylinder 540, the terminal surface on the face of cylinder 540 is button cover 580.
See Fig. 6, separately offer reply wind spring at axial cam 500 near the center, one end of recliner adapter plate 100 and take up hole 590.
The regulator for chair back angle of this embodiment also comprise one be arranged on four pieces of locking tooth plates 400 and recliner adapter plate 100 relative to recliner tooth plate 200 that face 110 between returning spring sheet 600, the center of returning spring sheet 600 offers a through hole 610, move for axial cam 500, the outer rim of this returning spring sheet 600 is evenly equipped with four the spring hook tabs 620 matched with four pieces of locking tooth plate 400 quantity, and each spring hook tabs 620 is inserted in the snap hook film perforation 420 of corresponding locking tooth plate 400.
See Fig. 6 to Fig. 8, the regulator for chair back angle of this embodiment fits together by the following method: first returning spring sheet 600 is placed on recliner adapter plate 100 relative to the center on that face 110 of recliner tooth plate 200, then four pieces of locking tooth plates 400 are placed in each passage 112, and four spring hook tabs 620 on returning spring sheet 600 are inserted in the snap hook film perforation 420 of corresponding locking tooth plate 400.The reply wind spring of replying one end of wind spring 700 and be inserted into recliner adapter plate 100 center to be taken up in hole 113 and be enclosed within and reply wind spring and take up on post 114, then the reply wind spring on axial cam 500 being taken up hole 590 is enclosed within one end of reply wind spring 700, finally with shroud ring 300, recliner tooth plate 200 is fixed on recliner adapter plate 100, after after installing, the face of cylinder 540 on axial cam 500 is through the centre hole 230 of recliner tooth plate 200, owing to there is no External Force Acting, reply wind spring 700 axial cam 500 is outwards ejected, the camming surface 510 of axial cam 500 is by four locking tooth plates 400 outwards spreading, locking tooth 410 in the locking tooth plate 400 outer rim internal tooth section 221 corresponding with on the internally toothed annulus 220 of recliner tooth plate 200 is engaged (see Fig. 7 and Fig. 8), and by recliner tooth plate 200 locking.
The principle of work of the regulator for chair back angle of the present embodiment is: see Fig. 9, without External Force Acting on axial cam 500 time, reply wind spring 700 to discharge, by axial cam 500 upwards jack-up, camming surface 510 on axial cam 500 promotes locking tooth plate 400 after overcoming spring hook tabs 620 resistance on returning spring sheet 600 to outer spreading, locking tooth 410 in the locking tooth plate 400 outer rim internal tooth section 221 corresponding with on the internally toothed annulus 220 of recliner tooth plate 200 is engaged, and by recliner tooth plate 200 locking.
See Figure 10, Figure 12, Figure 13 and Figure 14, with the button cover 580 on finger contact axial cam 500, promote axial cam 500 to move downward after overcoming the resistance of replying wind spring 700, the reply wind spring making the camming surface 510 on axial cam 500 progressively recede into recliner adapter plate 100 takes up in hole 113, abdicates the position of locking tooth plate 400 rollback.Under the effect of the spring hook tabs 620 on returning spring sheet 600, promote locking tooth plate 400 inwardly to bounce back and the camming surface 520 always retracting to axial cam 500, at this moment corresponding on the locking tooth 410 of locking tooth plate 400 outer rim and the internally toothed annulus 220 of recliner tooth plate 200 internal tooth section 221 departs from and engages, can regulate the angle of back of seat, unclamping finger after regulating can again by recliner tooth plate 200 locking.
See Figure 11, when being in lockup state, the spring hook tabs 620 on returning spring sheet 600 is in running order (in figure dotted line position).When being in released state, the spring hook tabs 620 on returning spring sheet 600 is in Pre strained state (in figure solid line position).
Embodiment 2
Structure see the regulator for chair back angle provided in Figure 15 and Figure 16, figure is substantially identical with embodiment 1, and just locking tooth plate 400 is two pieces, becomes 180 degree of layouts.The principle of work of the regulator for chair back angle of this embodiment is identical with embodiment 1.
Embodiment 3
Structure see the regulator for chair back angle provided in Figure 17, figure is substantially identical with embodiment 1, and just locking tooth plate 400 is five pieces, becomes 72 degree of layouts.The principle of work of the regulator for chair back angle of this embodiment is identical with embodiment 1.
Embodiment 4
Structure see the regulator for chair back angle provided in Figure 18, figure is substantially identical with embodiment 1, and just locking tooth plate 400 is six pieces, becomes 60 degree of layouts.The principle of work of the regulator for chair back angle of this embodiment is identical with embodiment 1.
Suppose when other conditions are constant, recliner is when the effect by static weight, and the number of teeth that locking tooth plate engages with the internally toothed annulus of recliner tooth plate is more, means there are more area of thrust surface.According to pressure formula: pressure equals static weight and the ratio of area of thrust surface, can obtain, under equal dead weight, if area of thrust surface are larger, suffered by recliner tooth plate gear ring, pressure is less, and the overall static strength of recliner is larger.
The axial cam mechanism that the present invention proposes can realize four pieces of locking tooth plates and more than four pieces locking tooth plates and to coexist the design of recliner inside, such as five pieces, six pieces locking tooth plate designs, namely when other conditions are constant, the object increasing total number of teeth in engagement is reached by the quantity increasing locking tooth plate, thus increase the inner area of thrust surface of recliner, realize higher Static Strength Design.