CN106627269B - Seat angle adjuster and seat with same - Google Patents
Seat angle adjuster and seat with same Download PDFInfo
- Publication number
- CN106627269B CN106627269B CN201611199537.0A CN201611199537A CN106627269B CN 106627269 B CN106627269 B CN 106627269B CN 201611199537 A CN201611199537 A CN 201611199537A CN 106627269 B CN106627269 B CN 106627269B
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- seat
- sliding blocks
- ratchet wheel
- plate
- sliding block
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/22—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/90—Details or parts not otherwise provided for
- B60N2/919—Positioning and locking mechanisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/90—Details or parts not otherwise provided for
- B60N2/919—Positioning and locking mechanisms
- B60N2002/952—Positioning and locking mechanisms characterised by details of the locking system
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/40—Weight reduction
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
- Seats For Vehicles (AREA)
Abstract
The invention discloses a seat angle adjuster and a seat with the same, wherein the seat angle adjuster comprises a chute plate, a ratchet wheel, two first sliding blocks and two second sliding blocks, wherein four sliding grooves are uniformly formed in the circumference of the chute plate so as to respectively accommodate the two first sliding blocks and the two second sliding blocks, and the two first sliding blocks and the two second sliding blocks are symmetrical relative to the center of the chute plate; the inner periphery of the ratchet wheel is provided with two protruding sections protruding in the radial direction, and the two protruding sections are symmetrical relative to the center of the ratchet wheel; and the second sliding block is provided with a convex part, and when the second sliding block translates outwards along the radial direction, the convex part can prop against the convex section so that the second sliding block cannot be meshed with the ratchet wheel. Through the optimal design to seat angle modulation ware structure, can increase the folding angle of seat, can also effectively control the weight of seat angle modulation ware simultaneously to ensure its intensity, improved the adaptability of seat angle modulation ware.
Description
Technical Field
The invention relates to the technical field of seat angle adjustment, in particular to a seat angle adjuster and a seat with the same.
Background
Referring to fig. 1, fig. 1 is a schematic structural view of a typical seat.
As shown, a conventional seat includes a backrest 10 and a tub 20; in order to adapt to different requirements, the angle between the backrest 10 and the seat pan 20 can be adjusted appropriately during the use of the seat, especially for car seats, this function is usually achieved by means of a seat recliner 30'.
As shown in the figure, through the seat angle adjuster, the total adjustment angle between the seat back and the seat base is J, according to practical application requirements, some seats require that a certain range of the seat back and the seat base cannot be locked in the total adjustment angle range, that is, whether the unlocking handle is lifted or not, the seat back cannot be locked in the range, the angle in the range is called as a folding angle, J1 in the figure indicates the folding angle, and J2 indicates that the seat back can be locked in the angle range.
Referring to fig. 2 together, fig. 2 is an exploded view of a conventional seat recliner.
The seat recliner 30' includes a sheath 31, a ratchet 32, an unlocking cam 33, a slider 34, a locking cam 35, a center shaft 36, a return spring 37, and a slide plate 38.
Typically, the ratchet 32 of the seat recliner 30 is integral with the back rest 10 and the tongue plate 38 is integral with the bowl 20. The ratchet 32 is rotatable relative to the chute plate 38 to adjust the angle of the back rest 10 to the bowl 20.
The unlocking cam 33, the locking cam 35 and the return spring 37 all have a central hole for the central shaft 36 to penetrate, and can rotate under the drive of the central shaft 36, the locking cam 35 and the sliding block 34 are located on the same plane, the locking cam 35 is located in a middle groove of the sliding groove plate 38, the sliding block 34 is located in a sliding groove at the outer end of the sliding groove plate 38, and the sliding block 34 can only slide in the sliding groove in the radial direction.
During locking, the self-locking surface of the locking cam 35 is abutted against the self-locking surface of the sliding block 34, and the sliding block ratchet teeth at the outer end of the sliding block 34 are meshed with the ratchet teeth of the ratchet 32, so that the ratchet 32 cannot rotate relative to the chute plate 38, and the relative positions of the backrest 10 and the seat pan 20 of the seat are fixed; the locked state is maintained by the return spring 37.
When the central shaft 36 is unlocked and an external torque opposite to the return spring 37 is applied, the unlocking cam 33 rotates to drive the sliding block 34 to translate in the sliding groove towards the central shaft 36, and the sliding block ratchet and the ratchet are completely separated, at this time, the ratchet 32 can freely rotate relative to the center of the sliding groove plate 38, so that the angles of the backrest 10 and the seat basin 20 can be adjusted according to the needs.
The principle of the seat angle adjuster 30 for realizing the seat with the folding angle J1 is that a section of smooth surface is arranged on the tooth surface of the ratchet wheel 32, and in the range of the section of smooth surface, the sliding block and the ratchet wheel 32 cannot be meshed and cannot be locked, so that the folding function can be realized.
The seat recliner 30 has three sliders distributed at 120 ° between each slider, i.e. each slider has 17 teeth each for every 120 ° rotation of the ratchet wheel into the next cycle, and occupies 34 °, i.e. the sum of the folding angle J1 and the angle J2 at which the seat back can be locked, i.e. the total adjustment angle J is 120 ° -34 ° =86°.
In practical applications, a larger adjustment range of the folding angle of the seat is often required, and as calculated above, the folding angle J1 of the existing seat recliner 30 is only 86 ° (only one seat back can be locked at this time), so that the design cannot meet the requirement of a customer for a larger folding angle.
In order to achieve a larger design range of the folding angle J1, the seat angle adjuster is also provided with only two sliding blocks, but the thickness of the sliding blocks is large, so that the thickness of the sliding groove plates matched with the sliding blocks and the thickness of the ratchet wheels are large to accommodate the sliding blocks, the overall weight of the angle adjuster is increased, and the angle adjuster is not matched with the development requirement of light weight.
In view of this, it is a technical problem that a person skilled in the art needs to solve at present how to improve the structure of the existing seat recliner to effectively control the weight of the recliner on the basis of increasing the folding angle of the seat.
Disclosure of Invention
The invention aims to provide a seat angle adjuster and a seat with the same, and the seat angle adjuster can increase the folding angle of the seat through the optimal design of the structure of the seat angle adjuster, can effectively control the weight of the seat angle adjuster, ensures the strength of the seat angle adjuster and improves the adaptability of the seat angle adjuster.
In order to solve the technical problems, the invention provides a seat angle adjuster, which comprises a chute plate, a ratchet wheel, two first sliding blocks and two second sliding blocks, wherein four sliding grooves are uniformly formed in the circumference of the chute plate so as to respectively accommodate the two first sliding blocks and the two second sliding blocks, and the two first sliding blocks and the two second sliding blocks are symmetrical relative to the center of the chute plate;
the inner periphery of the ratchet wheel is provided with two protruding sections protruding in the radial direction, and the two protruding sections are symmetrical relative to the center of the ratchet wheel;
and the second sliding block is provided with a convex part, and when the second sliding block translates outwards along the radial direction, the convex part can prop against the convex section so that the second sliding block cannot be meshed with the ratchet wheel.
The seat angle adjuster provided by the invention has the advantages that the number of the sliding blocks is four, the sliding blocks are uniformly distributed along the circumferential direction of the sliding groove plate and are divided into a first sliding block and a second sliding block, wherein the two second sliding blocks are symmetrical relative to the center of the sliding groove plate; two convex sections along the radial direction are arranged on the inner periphery of the ratchet wheel, so that two concave sections are formed between the two convex sections, and the two convex sections are symmetrical relative to the center of the ratchet wheel, namely, the angle range of one convex section and one concave section adjacent to the convex section is 180 degrees; the second sliding block is provided with a convex part, and when the second sliding block translates outwards along the radial direction, the convex part can prop against the convex section of the ratchet wheel so that the second sliding block and the ratchet wheel can not be meshed.
When the seat angle adjuster works, if the convex part of the second sliding block abuts against the convex section of the ratchet wheel in the radial outward translation process of the sliding block, the second sliding block cannot continue to radially outward translate under the limit of the convex section of the ratchet wheel and is in a clamping state, so that the unlocking cam driving the second sliding block to translate cannot rotate, and correspondingly, the first sliding block is also in the clamping state and cannot radially outward translate, so that the sliding block and the ratchet wheel cannot be meshed, and the folding function can be realized, namely, the angle range of the convex section is the folding angle of the seat, and obviously, the convex section can be provided with a range of approximately 180 degrees according to the requirement, so that the seat has a larger folding angle to meet the use requirement; in addition, the seat angle adjuster is provided with four sliding blocks, the thickness of each sliding block can be designed smaller, and correspondingly, the thickness of the chute plate and the thickness of the ratchet wheel can be designed smaller, so that the angle adjuster has lighter weight. It can be seen that the seat recliner is capable of effectively controlling the weight of the recliner on the basis of increasing the folding angle of the seat.
Optionally, when the convex portion of the second slider abuts against the convex section, a predetermined gap is maintained between the external teeth of the second slider and the internal teeth of the ratchet.
Optionally, the second slider is in a meshed state with the ratchet, and the convex part and the inner peripheral surface of the ratchet, which is located between the two convex sections, have a preset gap.
Optionally, the number of teeth of the external teeth of the first sliding block and the second sliding block is 15-25.
Optionally, bosses are arranged on the first sliding block and the second sliding block; the unlocking cam is provided with four sections of special-shaped holes, and the unlocking cam is matched with the bosses of the two first sliding blocks and the bosses of the two second sliding blocks respectively so as to drive the first sliding blocks and the second sliding blocks to radially translate when the unlocking cam rotates; the convex part is positioned on the outer side of the boss.
Optionally, the device further comprises a reset spring and a central shaft, wherein the reset spring is sleeved on the central shaft and is positioned on the outer side of the sliding groove plate, a boss is arranged on the outer side of the sliding groove plate and provided with a groove with an opening facing the center of the sliding groove plate, an outer hook of the reset spring is clamped in the groove, and the outer hook is in interference fit with the groove.
Optionally, the central shaft is further sleeved with a locking cam and an unlocking cam, the locking cam and the unlocking cam are sleeved together through mutually matched through holes and bosses, and the ratchet wheel further comprises an adjusting ring which is arranged between the unlocking cam and the ratchet wheel so as to prevent the unlocking cam from being separated from the locking cam.
Optionally, the device further comprises a sheath, wherein the sheath comprises a first annular plate, a second annular plate and a cylinder, one end of the cylinder is fixedly connected with the outer peripheral wall of the first annular plate, and the other end of the cylinder is fixedly connected with the inner peripheral wall of the second annular plate; the inner wall of the first annular plate and the inner wall of the cylinder are respectively attached to the outer side face and the outer peripheral wall of the ratchet wheel, and the inner wall of the second annular plate is fixedly connected with the chute plate.
Optionally, the inner end surfaces of the first sliding block and the second sliding block are symmetrical in structure.
The invention also provides a seat, which comprises a hinged seat and a chair back and a seat angle adjuster arranged between the seat and the chair back, wherein the seat angle adjuster adopts any one of the seat angle adjusters.
Because the seat angle adjuster has the technical effects, the seat with the seat angle adjuster has the same technical effects and is not repeated.
Drawings
FIG. 1 is a schematic view of a typical seat;
FIG. 2 is a schematic cross-sectional view of a prior art seat recliner;
FIG. 3 is an exploded view of the seat recliner of FIG. 2;
FIG. 4 is a schematic cross-sectional view of one embodiment of a seat recliner provided by the present invention;
FIG. 5 is an exploded view of the seat recliner of FIG. 4 at an angle;
FIG. 6 is an exploded view of the seat recliner of FIG. 4 at another angle;
FIG. 7 is a schematic view of a seat recliner of the embodiment with the ratchet and unlocking cams removed;
FIG. 8 is a schematic view of the ratchet wheel of FIG. 4;
FIG. 9 is a schematic diagram of the configuration of the return spring, center shaft and runner plate in accordance with an embodiment;
FIG. 10 is an enlarged view of a portion of the area I of FIG. 9;
FIG. 11 is a schematic view of the jacket shown in FIG. 4
Fig. 12 is a schematic structural view of a first slider in an embodiment.
In fig. 1-3:
a back 10, a seat 20, a seat recliner 30;
sheath 31, ratchet 32, unlocking cam 33, slide block 34, locking cam 35, central shaft 36, return spring 37, and slide groove plate 38;
fig. 4-11:
the seat recliner 30', the sheath 31', the ratchet 32', the unlocking cam 33', the first slider 34a ', the second slider 34b', the locking cam 35', the central shaft 36', the return spring 37', the tongue plate 38', the adjusting ring 60;
the first annular plate 311', the second annular plate 312', the cylinder 313', the convex section 321', the concave section 322', the through hole 331', the special-shaped hole 332', the convex section 341b ', the boss 342', the convex column 353', the outer hook 371', the convex section 383', the groove 384', the inner groove section 3841', the outer groove section 3842'.
Detailed Description
The invention has the core of providing a seat angle adjuster and a seat with the seat angle adjuster, and the seat angle adjuster can increase the folding angle of the seat through the optimized design of the structure of the seat angle adjuster, can effectively control the weight of the seat angle adjuster, ensures the strength of the seat angle adjuster and improves the adaptability of the seat angle adjuster.
In order to better understand the aspects of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.
Referring to fig. 4 to 6, fig. 4 is a schematic cross-sectional view of an embodiment of a seat recliner provided by the present invention; FIG. 5 is an exploded view of the seat recliner of FIG. 4 at an angle; FIG. 6 is an exploded view of the seat recliner of FIG. 4 at another angle; FIG. 7 is a schematic view of a seat recliner of the embodiment with the ratchet and unlocking cams removed; FIG. 8 is a schematic view of the ratchet of FIG. 4.
In this embodiment, the seat recliner 30 'includes a sheath 31', a ratchet 32', an unlocking cam 33', a slider, a locking cam 35', a central shaft 36', a return spring 37', and a pulley plate 38'.
Wherein, the unlocking cam 33', the locking cam 35' and the return spring 37' are sleeved on the central shaft 36', and the unlocking cam 33', the locking cam 35' and the central shaft 36' can synchronously rotate; the locking cam 35' is located in the central cavity of the chute plate 38', the slide block is located in the chute at the outer end of the chute plate 38', and the slide block can only translate radially in the chute.
The sliding block and the locking cam 35 'are provided with locking surfaces matched with each other, in the locking state, the locking surfaces of the sliding block are in contact with the locking surfaces of the locking cam 35', and the external teeth of the sliding block are meshed with the internal teeth of the ratchet wheel 32', so that the ratchet wheel 32' cannot rotate to lock the relative positions of the chair back and the chair seat; during unlocking, the unlocking cam 33 'and the locking cam 35' are synchronously rotated by rotating the central shaft 36', the unlocking cam 33' drives the sliding block to radially inwards translate, the locking cam 35 'simultaneously rotates to leave a moving space for the sliding block, the sliding block is disengaged from the ratchet wheel 32', and the ratchet wheel 32 'can rotate relative to the sliding groove plate 38', so that the angle between the chair back and the chair seat can be adjusted.
In this embodiment, the number of the sliding blocks is four, including two first sliding blocks 34a 'and two second sliding blocks 34b', and accordingly, four sliding grooves are uniformly distributed in the circumferential direction on the sliding groove plate 38', wherein the two first sliding blocks 34a', the two second sliding blocks 34b 'are symmetrical with respect to the center of the sliding groove plate 38', that is, the adjacent first sliding blocks 34a 'and second sliding blocks 34b' are arranged at 90 °.
The ratchet 32 'has two radially protruding sections 321' at its inner circumference such that two concave sections 322 'are formed between the protruding sections 321', and the protruding sections 321 'are symmetrical with respect to the center of the ratchet 32', that is, one protruding section 321 'is located at an angle of 180 ° to one concave section 322' adjacent thereto.
A protrusion 341b ' is provided on the second slider 34b ' such that, when the second slider 34b ' translates radially outwardly, the protrusion 341b ' can abut against the protrusion 321' to disable the second slider 34b ' from engaging the ratchet 32 '.
After the arrangement, when the seat angle adjuster 30' works, if the convex part 341b ' of the second sliding block 34b ' abuts against the convex section 321' of the ratchet wheel in the radial outward translation process of the sliding block, the second sliding block 34b ' cannot continue to translate radially outward under the limitation of the convex section 321' of the ratchet wheel 32', and is in a clamping state, so that the unlocking cam 33' driving the second sliding block 34b ' to translate cannot rotate, and correspondingly, the first sliding block 34a ' is also in a clamping state and cannot translate radially outward, so that the sliding block cannot be meshed with the ratchet wheel 32', and the folding function can be realized, that is, the angle range of the convex section 321' is the folding angle of the seat, and obviously, the convex section 321' can be set to be approximately 180 degrees according to the requirement, so that the seat has a larger folding angle to meet the use requirement; in addition, the seat recliner is provided with four sliders, and the thickness of each slider can be designed smaller, and accordingly, the thickness of the chute plate 38 'and the thickness of the ratchet wheel 32' can be designed smaller, so that the recliner has lighter weight. It can be seen that the seat recliner 30' is capable of effectively controlling the weight of the recliner on the basis of increasing the seat folding angle.
In a specific embodiment, when the convex portion 341b 'of the second slider 34b' abuts against the convex portion 321 'of the ratchet 32', a predetermined gap is maintained between the external teeth of the second slider 34b 'and the internal teeth of the ratchet 32'. In this way, the slide block and the ratchet wheel 32 'can not be meshed in the range of the protruding section 321' of the ratchet wheel 32', the situation that the slide block and the ratchet wheel 32' are meshed due to machining errors of parts is avoided, and the reliability of the angle adjuster is ensured.
Specifically, the predetermined gap may be set to 0.2mm or more; it will be appreciated that the predetermined gap may be flexibly set according to actual requirements.
In a specific embodiment, the second slider 34b 'is engaged with the ratchet 32', that is, when the ratchet 32 'rotates until the second slider 34b' is within the concave section 322', a predetermined gap is provided between the convex portion 341b' of the second slider 34b 'and the inner circumferential surface of the ratchet 32' between the two convex sections 321', that is, the concave section 322'. This is provided to ensure that the male portion 341b ' of the second slider 34b ' does not interfere with the female portion 322' of the ratchet 32' over the locking angle range, avoiding the inability to engage the slider with the ratchet 32' due to interference. The preset gap may be set according to the actual situation.
In a specific scheme, the number of teeth of the first sliding block 34a ' and the second sliding block 34b ' is 15-25, so that each sliding block has a proper number of teeth, compared with two sliding blocks or three sliding blocks in the background art, four sliding blocks are arranged in the scheme, the number of teeth of each sliding block is relatively smaller, the thickness of the sliding blocks can be reduced, but the total meshing number of teeth of all sliding blocks and the ratchet wheel 32' can still be ensured, so that the strength is ensured. More specifically, the number of teeth of each slider in this embodiment may be 21.
In a specific embodiment, the unlocking cam 33 'is configured to drive the slider to translate in the radial direction by matching the profiled hole 332' with the boss 342 'of the slider, wherein the specific structure of the profiled hole 332' is not a core point of the present invention, and reference is made to the prior art design.
That is, the first slider 34a 'and the second slider 34b' are provided with bosses 342', and obviously, the unlocking cam 33' is provided with four profiled holes 332 'to be respectively matched with the bosses 342' of the four sliders. Obviously, the projection 341b ' of the second slider 34b ' should be positioned outside the boss 342' so as to initially abut the projection 321' of the ratchet 32' when it moves radially outwardly.
Referring to fig. 2, in the conventional design, the return spring 37 is disposed on the inner side of the angle adjuster, that is, between the pulley plate 38 and the ratchet 32, a cavity for accommodating the return spring 37 needs to be formed in the middle of the pulley plate 38, and the cavity in the middle of the pulley plate 38 must also be designed with a larger diameter due to the larger diameter of the return spring 37, which results in a larger overall size of the angle adjuster, and does not meet the requirement of lightweight development. In addition, the outer hook of the return spring 37 needs to be fixedly connected with the chute plate 38 so that the return spring 37 can be compressed when the central shaft 36 rotates, and the existing design is to design a positioning hole on the chute plate 38, so that after the angle adjuster is immersed in the coating liquid, the coating liquid enters the angle adjuster from the positioning hole 382, and the performance of related parts is affected.
Therefore, the setting position of the return spring and the fixing way of the return spring and the chute plate are improved.
Referring to fig. 9 and fig. 10 together, fig. 9 is a schematic structural diagram of the return spring, the central shaft and the chute plate in the embodiment; fig. 10 is a partial enlarged view of the I-site in fig. 9.
In this embodiment, the return spring 37 'is disposed outside the runner plate 38', a protrusion is disposed outside the runner plate 38', a groove 384' is formed on the protrusion and opened toward the center of the runner plate 38', an outer hook 371' of the return spring 37 'is engaged with the groove 384', and the outer hook 371 'is interference fit with the groove 384'.
As described above, the return spring 37 'is arranged on the outer side of the sliding groove plate 38', the return spring 37 'does not occupy the internal space of the angle adjuster, and a concave cavity for accommodating the return spring 37' is prevented from being formed on the inner side of the sliding groove plate 38', so that the diameter of the sliding groove plate 38' can be designed smaller, the overall size of the angle adjuster is reduced, correspondingly, the weight is also reduced, the requirement of the light weight development of the seat is met, in addition, the material is saved due to the reduction of the overall size of the angle adjuster, and the cost is reduced; meanwhile, a protruding part is arranged on the outer side of the sliding groove plate 38', a groove 384' with an opening facing the center of the sliding groove plate 38 'is arranged on the protruding part, and an outer hook 371' of the return spring 37 'is clamped in the groove 384', so that the structure that a through hole is arranged on the sliding groove plate 38 'to be matched with the outer hook 371' is avoided, the influence of a coating liquid entering the angle adjuster on related parts is avoided, and the performance of the angle adjuster is guaranteed.
In a specific embodiment, the outer side of the chute plate 38' is provided with a plurality of protrusions 383' along the circumferential direction, and these protrusions 383' can be matched with the through holes of the seat coupling plate.
In the specific assembly, the chute plate 38 'and the seat coupling plate are first sleeved together by the cooperation of the protruding part 383' and the through hole, and then welded and fixed. That is, in a typical design, the pulley plate 38 'of the seat recliner is fixedly connected to the seat, and correspondingly, the ratchet wheel 32' is fixedly connected to the seat back, and the ratchet wheel 32 'and the pulley plate 38' are rotatable relative to each other to adjust the angle between the seat back and the seat.
In this way, the protruding portion of the recess 384' can be one of the plurality of protruding portions 383', so that the protruding portion can be prevented from being specially machined on the outer side of the runner 38', the machining steps can be simplified, and the machining cost can be reduced. Of course, it will be appreciated that it is also possible to provide separate protrusions to provide recesses for receiving return springs 37'.
It should be further noted that the structure in which four protrusions 383' are provided on the outer side of the runner plate 38' is exemplarily shown in the drawings, and it should be understood that the number of the protrusions 383' may be set according to actual matching requirements and conditions, and is not limited to the one shown in the drawings.
The interference fit between the outer hook 371 'and the groove 384' can be achieved in various ways, and the outer hook 371 'is slightly larger than the groove 384' in size, so that the outer hook 371 'is pressed into the groove 384' during assembly.
Specifically, the groove 384 'of the runner plate 38' includes an inner groove segment 3841 'and an outer groove segment 3842', the inner groove segment 3841 'being proximate the central axis 36'; the width of the outer channel segment 3842' tapers radially inwardly in the axial projection plane.
During the process of adjusting the angle between the back and the seat, the central shaft 36 'will compress the return spring 37', and the return spring 37 'will generate a pulling force towards the center direction, i.e. towards the central shaft 36' during the continuous compression, and the outer groove 3842 'of the groove 384' is designed into a structure with large outside and small inside, so as to block the outer hook 371', and simultaneously avoid pulling the return spring 37' out because of the interference fit between the outer hook 371 'and the groove 384'.
After the above design, the outer hook 371 'of the return spring 37' and the groove 384 'of the runner plate 38' can be assembled in the following manner; firstly, when the outer hook 371' of the return spring 37' is in an initial state of an equal-width structure matched with the inner groove section 3841', during assembly, the outer hook 371' extends into the outer groove section 3842' from the inner groove section 3841', then the outer hook 371' of the return spring 37' is pressed downwards by force to be flattened and deformed, and the whole groove 384' is filled, so that the structure shown in fig. 10 is formed, and the outer hook 371' of the return spring 37' can form interference fit with the groove 384' of the sliding groove plate 38', and the outer hook 371' of the return spring 37' is prevented from falling off.
Specifically, the outer groove segment 3842 'of groove 384' is inverted funnel shaped in axial projection. It should be appreciated that the outer channel segment 3842' may have other shapes as long as its width tapers radially inward.
Referring again to fig. 4 to 7, the unlocking cam 33 'and the locking cam 35' are sleeved together by the mutually matched boss 353 'and through hole 331'.
In this embodiment, an adjustment ring 60 is also provided, wherein the adjustment ring 60 is provided between the unlocking cam 33 'and the ratchet 32' to prevent the unlocking cam 33 'from disengaging from the locking cam 35'.
In a specific scheme, the unlocking cam 33 'is provided with a plurality of through holes 331' distributed along the circumferential direction, the center distance between the centers of the through holes 331 'and the unlocking cam 33' is equal, that is, the through holes 331 'are located on the same circumference, and correspondingly, the locking cam 35' is provided with a plurality of protruding columns 353 'which are consistent in number and correspond to the through holes 331' in position one by one, and when the locking cam is assembled, the protruding columns 353 'of the locking cam 35' respectively pass through the through holes 331 'of the unlocking cam 33' so as to assemble the two.
In order to ensure that the unlocking cam 33' and the locking cam 35' are well matched for synchronous rotation, the boss 353' is usually of a certain thickness, so that a certain axial clearance exists between the unlocking cam 33' and the ratchet wheel 32' due to the boss 353', if the machining errors of the ratchet wheel 32', the unlocking cam 33' and the locking cam 35' are large, the unlocking cam 33' is easily moved axially between the locking cam 35' and the ratchet wheel 32' after assembly, and is separated from the locking cam 35', thereby affecting the normal use of the angle adjuster, and the problem can be solved after the adjusting ring 60 is arranged.
The machining errors of all parts of the seat angle adjuster 30' are compensated through the adjusting ring 60, the unlocking cam 33' and the locking cam 35' are prevented from being separated, and synchronous rotation can be achieved, so that the precision requirement of all parts of the angle adjuster can be reduced due to the design of the adjusting ring 60, when a product is assembled, the axial clearance is adjusted through the fact that the adjusting rings with corresponding thicknesses are selected according to the actual matching conditions of all the parts, the angle adjuster can be normally used, the dimensional tolerance of all the parts of the angle adjuster can be properly enlarged due to the design of the adjusting ring 60, the machining difficulty is reduced, and the machining cost is correspondingly reduced. The structural design of the seat recliner 30' can ensure operational reliability while reducing manufacturing costs.
In a specific operation, the machining precision of each part of the seat angle adjuster 30 'can be properly reduced, when assembling products, the thickness of the adjustment between the unlocking cam 33' and the ratchet 32 'after each product is actually matched is detected, the adjustment ring 60 is machined according to the thickness, and the adjustment ring 60 is assembled into the corresponding product, so that the unlocking cam 33' and the locking cam 35 'can not be separated, and the synchronous rotation can be realized, so that the normal operation of the seat angle adjuster 30' can be ensured.
Referring to fig. 3, in the conventional design, the sheath 31 has two opposite inner annular surfaces and two inner peripheral surfaces connecting the two inner annular surfaces, the step transition is performed between the two inner peripheral surfaces, one inner annular surface of the sheath 31 is attached to the outer side surface of the ratchet wheel 32, the other inner annular surface is attached to the outer side surface of the runner 38, and the two inner peripheral surfaces are just attached to the ratchet wheel 32 and the peripheral wall of the runner 38, wherein the sheath 31 is fixedly connected with the runner 38.
As shown in fig. 3, the portion A1 is a fixing area between the sheath 31 and the runner 38, when the ratchet 32 receives a lateral external force, the lateral force transmits the force to the sheath 31 through the portion A2 where the sheath 31 is attached to the ratchet 32, the portion A1 between the sheath 31 and the runner 38 is a force supporting point of the sheath 31, the force supporting point A1 is far from the force supporting point A2 of the sheath 31, and bending deformation is easily generated, which results in insufficient strength of the sheath 31 and affects the reliability of the operation of the seat recliner 30.
For this reason, the structure of the sheath is also improved herein, please refer to fig. 4 and understand with reference to fig. 11, wherein fig. 11 is a schematic structural view of the sheath shown in fig. 4.
In this embodiment, the sheath 31 'includes a first annular plate 311', a second annular plate 312', and a cylinder 313', wherein one end of the cylinder 313 'is fixedly connected with the outer peripheral wall of the first annular plate 311', the other end is fixedly connected with the inner peripheral wall of the second annular plate 312', and the cross section of the sheath 31' is generally zigzag; the inner wall of the first annular plate 311 'and the inner wall of the cylinder 313' are respectively bonded to the outer side surface and the outer peripheral wall of the ratchet wheel 32, and the inner wall of the second annular plate 312 'is fixedly connected to the runner plate 38, and obviously, the second annular plate 312' is connected to the inner side surface (side surface facing the ratchet wheel 32) of the runner plate 38.
After the arrangement, the inner wall of the second annular plate 312 'of the sheath 31' is fixedly connected with the inner side surface of the chute plate 38, as shown in fig. 3, the fixing area of the sheath 31 'and the chute plate 38 is the B part, when the ratchet wheel 32 receives a lateral external force, the lateral force transmits the force to the sheath 31' through the first annular plate 311 'of the sheath 31', and the B part of the fixing area of the sheath 31 'and the chute plate 38 is the supporting point of the sheath 31' for bearing force.
As can be seen by comparing fig. 4 and 3, the sheath 31' with the above structure has a significantly smaller volume, requires less material, saves material cost, and contributes to reducing the overall weight of the seat recliner 30.
In a specific scheme, the second annular plate 312 'of the sheath 31' and the chute plate 38 are fixed in a welding manner, so that the method is simple and reliable; more specifically, the two may be laser welded.
In a specific embodiment, the inner end surfaces of the first slider 34a 'and the second slider 34b' are symmetrical, the structure of the first slider 34a 'can be understood by referring to fig. 12, and the second slider 34b' corresponds to the first slider, and the difference between the two is that one more protrusion 341b 'is disposed on the aforementioned second slider 34 b'.
Because the outer end of the slider is the external tooth matched with the ratchet wheel 32', the inner end is the matching surface matched with the locking cam 35', in the prior design, the inner end of the slider is usually of an asymmetric structure, and the two sides of the seat are provided with the angle adjusters, so that the slider structure is a part of the angle adjusters on the left side of the seat or a part of the angle adjusters on the right side of the seat, the number of dies is increased, the dies are easy to mix during assembly, and if the sliders on the left side and the right side are reversely assembled, the angle adjusters are invalid.
Therefore, the inner end surface of the sliding block is designed to be of a symmetrical structure, so that the sliding block is symmetrical in structure, only one sliding block die is needed during production, and the problem of wrong assembly can be avoided during assembly, so that production cost is reduced, and assembly efficiency and assembly reliability are improved.
The invention also provides a seat, which comprises a seat back, a seat base and a seat angle adjuster, wherein the seat angle adjuster is the seat angle adjuster.
The seat angle adjuster has the same technical effects as those of the seat comprising the seat angle adjuster, and the description thereof is omitted. The seat angle adjuster and the seat with the seat angle adjuster provided by the invention are described in detail. The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
Claims (7)
1. The seat angle adjuster comprises a chute plate and a ratchet wheel, and is characterized by further comprising two first sliding blocks and two second sliding blocks, wherein four sliding grooves are uniformly formed in the circumference of the chute plate so as to respectively accommodate the two first sliding blocks and the two second sliding blocks, and the two first sliding blocks and the two second sliding blocks are symmetrical relative to the center of the chute plate;
the inner periphery of the ratchet wheel is provided with two protruding sections protruding in the radial direction, and the two protruding sections are symmetrical relative to the center of the ratchet wheel;
the second sliding block is provided with a convex part, and when the second sliding block translates outwards along the radial direction, the convex part can prop against the convex section so that the second sliding block cannot be meshed with the ratchet wheel;
when the convex part of the second sliding block is abutted against the convex section, a preset gap is kept between the external teeth of the second sliding block and the internal teeth of the ratchet wheel;
the second sliding block is in an engaged state with the ratchet wheel, and a preset gap is reserved between the convex part and the inner peripheral surface of the ratchet wheel, which is positioned between the two convex sections;
the novel ring-shaped air conditioner further comprises a sheath, wherein the sheath comprises a first ring-shaped plate, a second ring-shaped plate and a cylinder, one end of the cylinder is fixedly connected with the outer peripheral wall of the first ring-shaped plate, and the other end of the cylinder is fixedly connected with the inner peripheral wall of the second ring-shaped plate; the inner wall of the first annular plate and the inner wall of the cylinder are respectively attached to the outer side face and the outer peripheral wall of the ratchet wheel, and the inner wall of the second annular plate is fixedly connected with the chute plate.
2. The seat recliner as set forth in claim 1 wherein the number of external teeth of said first and second sliders each range from 15 to 25.
3. The seat recliner as set forth in claim 1 or 2 wherein said first slider and said second slider are each provided with a boss; the unlocking cam is provided with four sections of special-shaped holes, and the unlocking cam is matched with the bosses of the two first sliding blocks and the bosses of the two second sliding blocks respectively so as to drive the first sliding blocks and the second sliding blocks to radially translate when the unlocking cam rotates; the convex part is positioned on the outer side of the boss.
4. The seat recliner according to claim 1 or 2 further comprising a return spring and a central shaft, said return spring being nested on said central shaft and located outside said runner plate, said outside of said runner plate being provided with a boss having a recess opening towards the center of said runner plate, an outer hook of said return spring being snapped into said recess and said outer hook being interference fit with said recess.
5. The seat recliner as set forth in claim 4 wherein said central shaft is further sleeved with a locking cam and an unlocking cam, said locking cam and said unlocking cam being sleeved together by cooperating through holes and bosses, and an adjustment ring disposed between said unlocking cam and said ratchet to prevent said unlocking cam from being disengaged from said locking cam.
6. The seat recliner as set forth in claim 1 or 2 wherein the inner end surfaces of said first and second sliders are both structurally symmetrical.
7. A seat comprising a hinged seat and back and a seat recliner interposed between the seat and back, wherein the seat recliner is a seat recliner as claimed in any one of claims 1 to 6.
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| CN201611199537.0A CN106627269B (en) | 2016-12-22 | 2016-12-22 | Seat angle adjuster and seat with same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611199537.0A CN106627269B (en) | 2016-12-22 | 2016-12-22 | Seat angle adjuster and seat with same |
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| CN106627269A CN106627269A (en) | 2017-05-10 |
| CN106627269B true CN106627269B (en) | 2023-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611199537.0A Active CN106627269B (en) | 2016-12-22 | 2016-12-22 | Seat angle adjuster and seat with same |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR102011089B1 (en) * | 2017-12-26 | 2019-08-14 | 현대트랜시스(주) | Seat recliner for vehicle and method for producing the same |
| CN108312926B (en) * | 2018-03-14 | 2023-08-15 | 上海国琻汽车科技有限公司 | Rotation adjusting mechanism and automobile seat armrest comprising same |
| WO2020015024A1 (en) * | 2018-07-20 | 2020-01-23 | 湖北航嘉麦格纳座椅***有限公司 | Vehicle seat and angle adjustment device thereof |
| CN108657032B (en) * | 2018-07-20 | 2023-08-25 | 湖北中航精机科技有限公司 | Vehicle seat and angle adjusting device thereof |
| CN109398171B (en) * | 2018-12-07 | 2024-01-26 | 湖北中航精机科技有限公司 | Automobile seat and seat angle adjuster core piece |
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| CN106627269A (en) | 2017-05-10 |
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