CN111532179A - Clearance elimination mechanism, concentric angle adjuster and installation method thereof - Google Patents
Clearance elimination mechanism, concentric angle adjuster and installation method thereof Download PDFInfo
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- CN111532179A CN111532179A CN202010362268.5A CN202010362268A CN111532179A CN 111532179 A CN111532179 A CN 111532179A CN 202010362268 A CN202010362268 A CN 202010362268A CN 111532179 A CN111532179 A CN 111532179A
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- wedge
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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
- B60N2/02—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
- B60N2/235—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 by gear-pawl type mechanisms
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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)
Abstract
The invention relates to a clearance eliminating mechanism, wherein a wedge spring mechanism comprises a first wedge, a second wedge, a third wedge, a first spring and a second spring, wherein the first wedge and the second wedge are superposed, one end of the first wedge and one end of the second wedge jointly define a first wedge blocking surface, the third wedge independently defines a second wedge blocking surface, the first spring is arranged between the first wedge and the third wedge, and the second spring is arranged between the second wedge and the third wedge. The invention also relates to a concentric angle adjuster and an installation method thereof. According to the clearance elimination mechanism and the concentric angle adjuster thereof, the parts have simpler structures and are easy to produce in large batch; the applicability is wide, the portability is good, and the angle adjuster can be used for various manual and electric angle adjusters; the wedge block and the spring have simple structures, easy production and low cost. According to the installation method of the concentric angle adjuster, an opening is not needed on the toothed plate, and production control is facilitated.
Description
Technical Field
The present invention relates to automotive seats and more particularly to a clearance elimination mechanism and a concentric recliner and a method of installing the same.
Background
The angle adjuster is a device which is arranged on an automobile seat and realizes the angle adjustment of a seat backrest. At present, most of seat electric angle adjusters commonly used in the market adopt an eccentric structure. The seat back does not rotate concentrically about a point but eccentrically with a certain eccentricity when adjusted. Due to the existence of the eccentricity, in the moving process, the backrest moves forward and backward in the horizontal direction and moves up and down in the vertical direction, so that the backrest moves in a wave manner. This causes the problem such as shake abnormal sound easily, can't satisfy the demand of quick steady adjustment to influence customer experience. In addition, the eccentric adjustment is prone to the problem that the gear point is stuck, so that the angle adjuster for eccentric adjustment needs to check the gear point, but even if the gear point is checked manually, the problem cannot be avoided completely.
Angle adjusters using a concentric structure are also known in the art. On the one hand, however, the parts are numerous, the structure is complex and the volume is large; on the other hand, although the problems of the shaking and the blocking of the gear point can be solved, the clearance between the internal gear of the angle adjuster and the tooth plate cannot be eliminated. If the gap is not eliminated, when a passenger leans against the backrest of the seat, the backrest can obviously shake, and the gap can cause abnormal sound when the passenger is unloaded, so that serious comfort problems can be caused, and the riding experience of the user is influenced.
CN110920478A discloses a clearance eliminating mechanism for an angle adjuster for reducing the clearance between gears of a toothed plate, which adopts a single cam and two sets of wedge spring structures respectively located at the upper and lower side surfaces of the cam to respectively eliminate the meshing clearance between the two sets of eccentric structures for two sets of gear-toothed plate eccentric structures, thereby solving the comfort problem caused by the shaking and abnormal sound of the backrest brought by the clearance. The two groups of wedge block spring structures comprise four wedge blocks and two springs, the number of the wedge blocks is large, and the cost is high. More importantly, if the spring is installed first, the wedges at the two ends of the spring are expanded by the spring, and the journals 11' of the toothed plate cannot be inserted to achieve assembly, as shown in fig. 10, so that the toothed plate has to be installed first to tighten the wedges at the two sides and then install the spring. This type of mounting necessitates the need for a window in the tooth plate for the spring mounting, which requires subsequent machining, cannot be stamped and formed, and is costly. Moreover, the spring is installed through the window, so that the installation difficulty is greatly increased, and the production control is not facilitated.
Disclosure of Invention
In order to solve the problem of clearance of a concentric angle adjuster and the problem that a wedge spring structure needs to be provided with a hole on a toothed plate in the prior art, the invention provides a clearance elimination mechanism, the concentric angle adjuster and an installation method thereof.
The invention provides a clearance eliminating mechanism, which comprises a cam and a wedge block spring mechanism which are matched, wherein the cam comprises a cam ring, a cam shaft, a first cam block and a second cam block, the cam shaft penetrates through the center of the cam ring, the first cam block and the second cam block are symmetrically arranged on the periphery of the cam ring at intervals, the first cam block is provided with a first block blocking surface, the second cam block is provided with a second block blocking surface, two opposite ends of the wedge block spring mechanism respectively form a first wedge block blocking surface and a second wedge block blocking surface, the first wedge block blocking surface is opposite to the first block blocking surface, the second wedge block blocking surface is opposite to the second block blocking surface, the wedge block spring mechanism comprises a first wedge block, a second wedge block, a third wedge block, a first spring and a second spring, wherein the first wedge block and the second wedge block are superposed, one end of the first wedge block blocking surface is jointly limited, the third wedge block is independently limited to the second wedge block blocking surface, the first spring is arranged between the first wedge block and the third wedge block, and the second spring is arranged between the second wedge block and the third wedge block.
Preferably, the wedge spring mechanism further comprises a baffle plate, the third wedge is fixedly connected with the baffle plate, and the first spring and the second spring are respectively located on two opposite sides of the baffle plate.
Preferably, the first wedge block and the second wedge block form a first spring hole groove at the other end opposite to the blocking surface of the first wedge block, the third wedge block forms a second spring hole groove at the other end opposite to the blocking surface of the second wedge block, opposite ends of the first spring are installed between the first spring hole groove and the second spring hole groove of the first wedge block, and opposite ends of the second spring are installed between the first spring hole groove and the second spring hole groove of the second wedge block.
Preferably, the first spring hole groove area is formed with a catch groove, the second spring hole groove area is formed with a mounting groove, the retainer has a head portion and a platform, the head portion is inserted into the mounting groove to fixedly connect the retainer to the third wedge block and outwardly extend from a middle portion of the third wedge block, the platform is inserted into the catch groove, and the first spring and the second spring are respectively located on opposite sides of the platform.
Preferably, the first wedge and the second wedge are identical, the sum of the thicknesses of the two wedges being equal to the thickness of the third wedge.
Preferably, the first spring and the second spring are standard cylindrical compression springs respectively, the free state is a vertical state, and the first spring and the second spring are installed between the two wedge blocks and then form an arc compression state due to pressure and limiting action.
The invention also provides a concentric angle adjuster, which comprises a first toothed plate, a second toothed plate, a gear and the clearance elimination mechanism, wherein one of the first toothed plate and the second toothed plate forms an output end of the angle adjuster, the other of the first toothed plate and the second toothed plate forms a fixed end of the angle adjuster, the first toothed plate and the second toothed plate are eccentrically meshed with the gear at two opposite sides of the gear simultaneously, the clearance elimination mechanism is accommodated in the gear, a cam shaft of a cam of the clearance elimination mechanism extends into central shaft holes of the first toothed plate and the second toothed plate for installation, a wedge block spring mechanism of the clearance elimination mechanism is provided with an inner working surface and an outer working surface which are opposite, the first toothed plate and the second toothed plate are respectively provided with shaft necks surrounding the central shaft holes, the shaft neck of the first toothed plate and the shaft neck of the second toothed plate are inserted between the cam shaft and the inner working surface, the shaft neck of the first toothed plate and the shaft neck of the second toothed plate are respectively in clearance fit with opposite surfaces of a cam ring, the outer working surface is matched with the central shaft hole of the gear
Preferably, the concentric angle adjuster further comprises a hoop, and the peripheries of the first toothed plate and the second toothed plate are fixedly connected together through the hoop.
Preferably, the concentric angle adjuster further comprises a shaft sleeve, the shaft sleeve is tightly attached to and arranged in a central shaft hole of the gear, and an outer working surface of the clearance elimination mechanism is matched with the surface of the inner wall of the shaft sleeve.
The invention also provides an installation method of the concentric angle adjuster, which comprises the following steps: s1, mounting the gear in the first toothed plate or the second toothed plate; s2, mounting a second wedge block, a third wedge block and a second spring into a space between the journal and the gear of the toothed plate, and mounting a cam into the central shaft hole of the toothed plate; s3, fixing the toothed plate and the gear through a limiting block, so that the third wedge block is fixed and cannot rotate; s4, mounting a first wedge block and a first spring; s5, covering the other one of the first and second tooth plates, and rotating the cam by using a rotating tool, wherein the third wedge block cannot rotate, and the first and third wedge blocks reach a parallel tight state and are inserted into a journal of the other one of the first and second tooth plates for assembly; and S6, withdrawing the limiting block after the other of the first toothed plate and the second toothed plate is meshed with the gear, pressing the other of the first toothed plate and the second toothed plate into place, releasing the rotating tool and completing the installation.
Preferably, the mounting method eliminates the need for windows in the first and/or second tooth plates for spring mounting.
According to the clearance elimination mechanism and the concentric angle adjuster thereof, the parts have simpler structures and are easy to produce in large batch; the applicability is wide, the portability is good, and the angle adjuster can be used for various manual and electric angle adjusters; the wedge block and the spring have simple structures, easy production and low cost. According to the installation method of the concentric angle adjuster, an opening is not needed on the toothed plate, and production control is facilitated.
Drawings
FIG. 1 is an assembled schematic view of a concentric recliner according to a preferred embodiment of the present invention;
FIG. 2 is a cross-sectional view of the concentric recliner of FIG. 1;
FIG. 3 is an assembled schematic view of the gap elimination mechanism of FIG. 1;
FIG. 4 is an assembled schematic view of the wedge spring mechanism of FIG. 3;
FIG. 5 is a schematic illustration of the concentric adjustment principle of the concentric recliner of FIG. 1;
FIG. 6 is a schematic illustration of the elimination gap principle of the concentric recliner of FIG. 1;
figure 7 is a schematic view of the concentric recliner of figure 1 securing the second tooth plate and the gear by a stop during installation;
FIG. 8 is a schematic view of the concentric recliner of FIG. 1 after installation of the first wedge and the first spring;
figure 9 is a schematic view of the concentric recliner of figure 1 facilitating insertion of the journal of the tooth plate after the first and third wedges are brought together;
figure 10 is a schematic view of a prior art wedge spring configuration that fails to insert the journals of the tooth plate after the spring is installed.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1-2, the concentric angle adjuster according to a preferred embodiment of the present invention includes a first tooth plate 1, a second tooth plate 2, a gear 3, a hoop 4, a shaft sleeve 5 and a clearance elimination mechanism 6, wherein the first tooth plate 1 is connected with a backrest (not shown) to form an output end of the angle adjuster, the second tooth plate 2 is connected with a seat basin (not shown) to form a fixed end of the angle adjuster, the first tooth plate 1 and the second tooth plate 2 are eccentrically engaged with the gear 3 at opposite sides of the gear 3 at the same time to form two sets of gear-tooth plate matching mechanisms, the peripheries of the first tooth plate 1 and the second tooth plate 2 are fixedly connected together by the hoop 4, the shaft sleeve 5 is closely disposed in a central axial hole of the gear 3, and the clearance elimination mechanism 6 is accommodated inside the shaft sleeve 5. It should be understood that the first and second tooth plates 1 and 2 are identical in structure and interchangeable in position, i.e., the first tooth plate 1 can be connected to the seat pan and the second tooth plate 2 is connected to the backrest.
As shown in fig. 3, the backlash elimination mechanism 6 includes a cam 61 and a wedge spring mechanism 62 that cooperate. The cam 61 includes a cam ring 611, a cam shaft 612, a first cam stopper 613 and a second cam stopper 614, wherein the cam shaft 612 is installed through a central shaft hole 10 (see fig. 1 and 2) provided at the center of the cam ring 611 and extending into the first tooth plate 1 and the second tooth plate 2, and forms a driving lever interface which connects a motor driving shaft or a synchronous lever as an interface for power input, and the first cam stopper 613 and the second cam stopper 614 are symmetrically provided at the periphery of the cam ring 611 with a space therebetween and have a first stopper surface 613a and a second stopper surface 614a, respectively. In the present embodiment, the central angle formed by the first stopper stop surface 613a and the second stopper stop surface 614a is 131.3 °. Opposite ends of the wedge spring mechanism 62 are formed as a first wedge stopper surface 62a and a second wedge stopper surface 62b, respectively, the first wedge stopper surface 62a being opposite to the first stopper surface 613a, and the second wedge stopper surface 62b being opposite to the second stopper surface 614 a. The wedge spring mechanism 62 has opposed inner and outer working faces 62c, 62 d. Referring to fig. 1 and 2, the first and second tooth plates 1 and 2 respectively have journals 11 surrounding the central shaft holes 10, the journals 11 and 11 of the first and second tooth plates 1 and 2 are respectively axially inserted between the cam shaft 612 and the inner working surfaces 62c, and end surfaces of the journals 11 and 11 of the first and second tooth plates 1 and 2 respectively are in clearance fit with opposite surfaces of the cam ring 611 and define the cam ring 611 in a space formed, and the outer working surfaces 62d abut against an inner wall surface of the boss 5.
As shown in fig. 4, the wedge spring mechanism 62 includes a first wedge 621, a second wedge 622, a third wedge 623, a blocking plate 624, a first spring 625 and a second spring 626, wherein the first wedge 621 and the second wedge 622 are stacked and one end thereof jointly defines a first wedge blocking surface 62a, the third wedge 623 independently defining a second wedge blocking surface 62b is fixedly connected to the blocking plate 624, and the first spring 625 disposed between the first wedge 621 and the third wedge 623 and the second spring 626 disposed between the second wedge 622 and the third wedge 623 are respectively located at opposite sides of the blocking plate 624. Specifically, the first wedge 621 and the second wedge 622 are formed with a first spring hole groove 62e at the other end opposite to the first wedge blocking surface 62a, the third wedge 623 is formed with a second spring hole groove 62f at the other end opposite to the second wedge blocking surface 62b, opposite ends of the first spring 625 are installed between the first spring hole groove 62e and the second spring hole groove 62f of the first wedge 621 to provide a stopper surface for the first spring 625 and to keep the first spring 625 relatively stable from interfering with other irrelevant parts, and opposite ends of the second spring 626 are installed between the first spring hole groove 62e and the second spring hole groove 62f of the second wedge 622 to provide a stopper surface for the second spring 626 and to keep the second spring 626 relatively stable from interfering with other irrelevant parts. The first spring hole groove 62e is formed at a region thereof with a catching groove 621a, the second spring hole groove 62f is formed at a region thereof with a mounting groove 623a, the blocking plate 624 has a head portion 624a and a platform 624b, the head portion 624a is inserted into the mounting groove 623a to fixedly connect the blocking plate 624 to the third wedge 623 and outwardly protrude from the middle portion of the third wedge 623, the platform 624b is inserted into the catching groove 621a, and the first spring 625 and the second spring 626 are respectively positioned at opposite sides of the platform 624b to avoid interference between the first spring 625 and the second spring 626 by the platform 624 b. In this embodiment, the first wedge 621 and the second wedge 622 are identical, and the sum of the thicknesses of the first wedge 621 and the second wedge 622 is equal to the thickness of the third wedge 623. The first spring 625 and the second spring 626 are standard cylindrical compression springs, are in a free state and are in a vertical state, and are installed between the two wedge blocks to form an arc compression state due to pressure and limiting action.
The concentric adjustment principle of the concentric angle adjuster of the present invention is explained below with reference to fig. 5: the first toothed plate 1, the second toothed plate 2 and the cam 61 are arranged coaxially about a first axis a, the gear 3 and the bushing 5 are arranged coaxially about a second axis B, the first axis a and the second axis B have an eccentricity e, i.e. the inner running surface 62c of the wedge spring mechanism 62 cooperating with the toothed plate journal 11 and the outer running surface 62d cooperating with the bushing 5 have an eccentricity e. The motor driving shaft or the synchronous lever drives the cam 61 to rotate, the first wedge 621 and the second wedge 622 are pushed to compress the first spring 625 and the second spring 626 after the first block blocking surface 613a contacts with the first wedge blocking surface 62a, and when the spring force is enough to overcome the friction force applied to the third wedge 623 or wedges at two ends of the spring contact, the third wedge 623 starts to synchronously rotate along the same direction under the driving of the cam 61. Since the outer working surface 62d is designed eccentrically, the gear 3 is eccentrically moved by an eccentricity e under the action of the wedge spring mechanism 62 and is engaged with the first tooth plate 1 and the second tooth plate 2. It can also be understood that: the second shaft B of the gear 3 is driven by the wedge spring mechanism 62 to rotate around the first shaft a with the radius of e all the time, and the gear 3 also rotates around the second shaft B under the meshing action of the gears. Because the second toothed plate 2 is fixed for the angle modulation ware stiff end, and first toothed plate 1 is the movable tooth board, consequently when gear 3 was eccentric motion, the intertooth meshing can drive first toothed plate 1 rotatory. Since the first toothed plate 1 can only rotate around the first axis a, the movement pattern of the first toothed plate 1 will be a concentric rotation, and since the first toothed plate 1 is connected to the backrest, a concentric adjustment of the backrest is achieved.
The principle of elimination of the backlash of the concentric recliner of the present invention is described below with reference to fig. 6: when the cam 61 stops rotating, the first wedge 621 and the third wedge 623 are spread under the action of the spring thrust F3, F4 of the first spring 625, and respectively apply radial thrust F1, F2 (see fig. 3) to the gear 3 and the first tooth plate 1 in opposite directions, so as to push the gear 3 and the first tooth plate 1 to be tightly meshed, and eliminate the gap between the gear 3 and the first tooth plate 1; the second wedge 622 and the third wedge 623 are expanded under the action of the spring thrust forces F3 and F4 of the second spring 626, and respectively apply radial thrust forces F1 and F2 (see fig. 3) in opposite directions to the gear 3 and the second toothed plate 2, so that the gear 3 and the second toothed plate 2 are pushed to be tightly meshed, and the gap between the gear 3 and the second toothed plate 2 is eliminated; the purpose of respectively and independently eliminating the clearance between the two sets of gear-toothed plate structures is achieved, and the comfort problem caused by the shaking and abnormal sound of the backrest brought by the clearance is avoided.
The installation process of the concentric recliner of the present invention is explained as follows: referring to fig. 1, the shaft sleeve 5 is tightly fitted into the central axial hole of the gear 3, and the gear 3 is fitted into the second toothed plate 2. The second wedge 622, the third wedge 623 and the second spring 626 are mounted in the space between the journal 11 and the bushing 5 of the second toothed plate 2, at which time the second wedge 622 and the third wedge 623 expand under the action of the second spring 626, eliminating the play between the toothed wheel 3 and the second toothed plate 2. A cam 61 (see fig. 3) is fitted into the central shaft hole 10 (see fig. 1) of the second rack gear 2. The second toothed plate 2 and the gear 3 are fixed by the stopper 7 so that the third wedge 623 is fixed against clockwise rotation, as shown in fig. 7. Referring to fig. 4, the stopper 624 is mounted to the third wedge 623, and then the first wedge 621 and the first spring 625 are mounted, and since the inner side of the wedge is temporarily unrestrained, a space for the first spring 625 is sufficient between the first wedge 621 and the third wedge 623, and the first spring 625 can be easily inserted, as shown in fig. 8. The first toothed plate 1 is covered, the cam 61 is rotated clockwise by the rotating tool, the cam 61 drives the first wedge 621 to rotate clockwise and lean against the third wedge 623, and finally the first wedge 621 and the third wedge 623 reach a tight state because the third wedge 623 cannot rotate clockwise, and the journal 11 of the first toothed plate 1 can be inserted for assembly at this time, as shown in fig. 9. After the tooth meshing of the tooth of first pinion rack 1 and gear 3, can withdraw from stopper 7, and then press first pinion rack 1 in place completely, release the rotary tool at last, accomplish the installation. Obviously, in the prior art, the four wedge structure cannot be installed by using the method because none of the two wedges can be kept fixed and cannot be tightened when the rear set wedge spring structure is assembled.
The above embodiments are merely preferred embodiments of the present invention, which are not intended to limit the scope of the present invention, and various changes may be made in the above embodiments of the present invention. All simple and equivalent changes and modifications made according to the claims and the content of the specification of the present application fall within the scope of the claims of the present patent application. The invention has not been described in detail in order to avoid obscuring the invention.
Claims (11)
1. A play eliminating mechanism comprising a cam and a wedge spring mechanism which cooperate, the cam comprising a cam ring, a cam shaft, a first cam stop and a second cam stop, the cam shaft being arranged through the center of the cam ring, the first cam stop and the second cam stop being arranged symmetrically at a distance from each other at the periphery of the cam ring, the first cam stop having a first stop face and the second cam stop having a second stop face, opposite ends of the wedge spring mechanism forming a first wedge stop face and a second wedge stop face, respectively, the first wedge stop face being opposite the first stop face and the second wedge stop face being opposite the second stop face, characterized in that the wedge spring mechanism comprises a first wedge, a second wedge, a third wedge, a first spring and a second spring, wherein the first wedge and the second wedge are superposed and one end of them jointly defines the first wedge stop face, the third wedge independently defines a second wedge stop surface, the first spring is disposed between the first wedge and the third wedge, and the second spring is disposed between the second wedge and the third wedge.
2. The slack elimination mechanism of claim 1, wherein the wedge spring mechanism further comprises a retainer plate, the third wedge is fixedly attached to the retainer plate, and the first spring and the second spring are positioned on opposite sides of the retainer plate.
3. The lash take up mechanism of claim 2, wherein the first wedge and the second wedge define a first spring hole recess at an end opposite the first wedge stop surface, the third wedge defines a second spring hole recess at an end opposite the second wedge stop surface, opposing ends of the first spring are mounted between the first spring hole recess and the second spring hole recess of the first wedge, and opposing ends of the second spring are mounted between the first spring hole recess and the second spring hole recess of the second wedge.
4. The lash take up mechanism of claim 3, wherein the first spring hole pocket region is formed with a catch slot, the second spring hole pocket region is formed with a mounting slot, the retainer has a head that is inserted into the mounting slot to fixedly attach the retainer to the third wedge and extends outwardly from a middle portion of the third wedge, and a platform that is inserted into the catch slot, the first spring and the second spring being located on opposite sides of the platform, respectively.
5. The lash take up mechanism of claim 1, wherein the first wedge and the second wedge are identical and the sum of the thicknesses of the first wedge and the second wedge is equal to the thickness of the third wedge.
6. The play elimination mechanism of claim 1, wherein the first spring and the second spring are each a standard cylindrical compression spring, the free state is vertical, and the free state is an arc-shaped compressed state due to pressure and a limiting action after being installed between the two wedges.
7. A concentric recliner comprising a first tooth plate, a second tooth plate, a gear and a play eliminating mechanism according to any one of claims 1 to 6, wherein one of the first tooth plate and the second tooth plate forms an recliner output end, the other of the first tooth plate and the second tooth plate forms an recliner fixed end, the first tooth plate and the second tooth plate are eccentrically engaged with the gear at opposite sides of the gear simultaneously, the play eliminating mechanism is accommodated inside the gear, a cam shaft of a cam of the play eliminating mechanism is installed to extend into central shaft holes of the first tooth plate and the second tooth plate, a wedge spring mechanism of the play eliminating mechanism has opposite inner and outer working faces, the first tooth plate and the second tooth plate respectively have shaft journals of the central shaft holes, the shaft journals of the first tooth plate and the shaft journals of the second tooth plate are inserted between the cam shaft and the inner working face, the journal of the first toothed plate and the journal of the second toothed plate are in clearance fit with the opposite surfaces of the cam ring respectively, and the outer working surface is in fit with a central shaft hole of the gear.
8. The concentric recliner of claim 7 further comprising an anchor ear, wherein the outer peripheries of the first and second tooth plates are fixedly connected together by the anchor ear.
9. The concentric recliner of claim 7 further comprising a bushing, the bushing being disposed in the central axial bore of the gear, the outer working surface of the lash take up mechanism engaging the inner wall surface of the bushing.
10. A method of mounting a concentric recliner as set forth in any one of claims 7-9 comprising the steps of:
s1, mounting the gear in the first toothed plate or the second toothed plate;
s2, mounting a second wedge, a third wedge and a second spring into a space between the journal and the gear of the toothed plate, and mounting a cam into a central axial hole of the toothed plate;
s3, fixing the toothed plate and the gear through a limiting block, so that the third wedge block is fixed and cannot rotate;
s4, mounting a first wedge block and a first spring;
s5, covering the other one of the first and second tooth plates, and rotating the cam by using a rotating tool, wherein the third wedge block cannot rotate, and the first and third wedge blocks reach a parallel tight state and are inserted into a journal of the other one of the first and second tooth plates for assembly;
and S6, withdrawing the limiting block after the other of the first toothed plate and the second toothed plate is meshed with the gear, pressing the other of the first toothed plate and the second toothed plate into place, releasing the rotating tool and completing the installation.
11. The method of mounting of claim 10, wherein the method of mounting does not require windows to be formed in the first and/or second tooth plates for spring mounting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010362268.5A CN111532179B (en) | 2020-04-30 | 2020-04-30 | Clearance elimination mechanism, concentric angle adjuster and installation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010362268.5A CN111532179B (en) | 2020-04-30 | 2020-04-30 | Clearance elimination mechanism, concentric angle adjuster and installation method thereof |
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| Publication Number | Publication Date |
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| CN111532179A true CN111532179A (en) | 2020-08-14 |
| CN111532179B CN111532179B (en) | 2021-12-03 |
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| CN202010362268.5A Active CN111532179B (en) | 2020-04-30 | 2020-04-30 | Clearance elimination mechanism, concentric angle adjuster and installation method thereof |
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| KR101419700B1 (en) * | 2014-05-20 | 2014-07-16 | 대원정밀공업(주) | Miniature round recliner |
| CN110920478A (en) * | 2019-12-23 | 2020-03-27 | 延锋安道拓(常熟)座椅机械部件有限公司 | Angle modulation ware clearance elimination mechanism |
| CN110936861A (en) * | 2019-12-23 | 2020-03-31 | 延锋安道拓(常熟)座椅机械部件有限公司 | Concentric adjustment seat angle adjuster |
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| JP2011079390A (en) * | 2009-10-06 | 2011-04-21 | Delta Kogyo Co Ltd | Bracket angle adjustment device and vehicular seat |
| EP2586650A2 (en) * | 2011-10-31 | 2013-05-01 | FUJI KIKO Co., Ltd. | Seat reclining device |
| CN103129418A (en) * | 2011-11-25 | 2013-06-05 | 湖北中航精机科技股份有限公司 | Seat angle adjuster and seat thereof |
| KR101419700B1 (en) * | 2014-05-20 | 2014-07-16 | 대원정밀공업(주) | Miniature round recliner |
| CN110920478A (en) * | 2019-12-23 | 2020-03-27 | 延锋安道拓(常熟)座椅机械部件有限公司 | Angle modulation ware clearance elimination mechanism |
| CN110936861A (en) * | 2019-12-23 | 2020-03-31 | 延锋安道拓(常熟)座椅机械部件有限公司 | Concentric adjustment seat angle adjuster |
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| CN111532179B (en) | 2021-12-03 |
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Address after: 215500 No.69 Yinhai Road, Southeast street, Changshu City, Changzhou City, Jiangsu Province Applicant after: Kaibo (Changshu) seat mechanical parts Co.,Ltd. Address before: 215500 No.69 Yinhai Road, Southeast street, Changshu City, Changzhou City, Jiangsu Province Applicant before: Yanfeng Andoto (Changshu) Seat Machinery Parts Co.,Ltd. |
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Address after: 215500 No.69 Yinhai Road, Southeast street, Changshu City, Suzhou City, Jiangsu Province Applicant after: Kaibo (Changshu) seat mechanical parts Co.,Ltd. Address before: 215500 No.69 Yinhai Road, Southeast street, Changshu City, Changzhou City, Jiangsu Province Applicant before: Kaibo (Changshu) seat mechanical parts Co.,Ltd. |
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