CN113147533A - Manual angle adjuster and adjusting method - Google Patents
Manual angle adjuster and adjusting method Download PDFInfo
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- CN113147533A CN113147533A CN202110405104.0A CN202110405104A CN113147533A CN 113147533 A CN113147533 A CN 113147533A CN 202110405104 A CN202110405104 A CN 202110405104A CN 113147533 A CN113147533 A CN 113147533A
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000005540 biological transmission Effects 0.000 claims abstract description 21
- 238000003756 stirring Methods 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims abstract description 7
- 230000000694 effects Effects 0.000 claims abstract description 6
- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- 238000013459 approach Methods 0.000 claims description 4
- 238000005253 cladding Methods 0.000 claims 1
- 230000033001 locomotion Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000002337 anti-port Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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- 230000002093 peripheral effect Effects 0.000 description 1
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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
- B60N2/2356—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 with internal pawls
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- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
Abstract
The invention relates to a manual angle adjuster and an adjusting method, the manual angle adjuster comprises a central shaft connected with an external power source, and a transmission assembly driven by the central shaft, wherein the two sides of the transmission assembly are coated with a sealing assembly, the sealing assembly comprises a fixed disc, a movable disc matched with the fixed disc, and a closed ring hooped at the wiring position of the fixed disc and the movable disc, the transmission assembly comprises a cam driven by the central shaft, a face mask driven by the cam, and a tooth block, and the transmission assembly also comprises a spring arranged on the fixed disc; the outer circle surface of cam is equipped with annular array and has a plurality of teeth of stirring, and the incline direction of stirring the tooth is the same, the coaxial cover of face guard is established on the center pin, is equipped with a plurality of holding tanks on the face guard, and tooth piece reciprocating motion in the holding tank drives the part in the cavity that face guard, activity dish, fixed disk and closed ring constitute, realizes unblock, angle modulation and the locking of backrest, also can make the backrest get into the idle stroke region.
Description
Technical Field
The invention relates to the technical field of automobile seat adjustment, in particular to a manual angle adjuster and an adjusting method.
Background
Adjustment of vehicle seats is commonly used in both the primary and secondary ride positions to adjust the angle of the seat back. Since the recliner for adjusting the angle of the front seat only needs to be able to withstand an external force applied by one person, the magnitude of the longitudinal strength is generally about 2000 Nm. Most of the existing angle adjusters adopt an electric driving mode, but in a transmission structure of the electric angle adjusters, gaps are easy to generate among components, and the reliability of transmission is influenced.
Disclosure of Invention
The applicant aims at the defects in the prior art and provides a manual angle adjuster with a reasonable structure and an adjusting method, and the manual angle adjuster has larger longitudinal strength and anti-backlash function, so that the manual angle adjuster is suitable for adjusting the angles of the front-row seat and the rear-row seat.
The technical scheme adopted by the invention is as follows:
a manual angle adjuster comprises a central shaft connected with an external power source, a transmission component driven by the central shaft, sealing components coated on two sides of the transmission component,
the sealing component comprises a fixed disc, a movable disc matched with the fixed disc and a closed ring hooped at the wiring position of the fixed disc and the movable disc,
the transmission assembly comprises a cam, a mask and a tooth block, wherein the cam is coaxially arranged with the central shaft, the mask and the tooth block are driven by the cam, and the transmission assembly further comprises a spring arranged on the fixed disc;
the outer wall of the central shaft is provided with a first bulge, the inner wall of the cam is correspondingly provided with a first groove, and the size of the first groove is larger than that of the first bulge;
the mask is coaxially sleeved on the central shaft and is parallel to the cam, a plurality of accommodating grooves are formed in the mask, the fixing disc is provided with a sinking groove, the tooth block is correspondingly arranged in the sinking groove, one side of the tooth block facing the accommodating grooves is provided with a second bulge, the accommodating grooves extend out of the sliding grooves along the rotation direction of the cam, the sliding grooves point to the circle center position of the mask along the rotation direction of the cam, and the second bulge moves in the sliding grooves in a reciprocating manner;
the side, facing the cam, of the tooth block is provided with driven teeth, the annular array on the periphery of the cam is provided with poking teeth, and when the cam rotates, the poking teeth push the driven teeth;
the side, away from the cam, of the tooth block is provided with first sawteeth, the inner wall of the movable disc is correspondingly provided with second sawteeth, and the first sawteeth and the second sawteeth are in a meshing state and a separating state in the process that the tooth block moves along the sliding groove;
be equipped with the curved groove that is used for holding the spring on the face guard, the cam is equipped with the lug on the one side towards the fixed disk, and spring one end is spacing at curved inslot, and the other end is contradicted on the lug, and the cam rotates and drives the spring compression.
The center pin includes the axostylus axostyle that the cavity set up, coaxial setting at the spacing collar on axostylus axostyle excircle surface, first protruding annular array is in the one side of spacing collar towards the cam, and first arch divide into the tight portion in top that links to each other with the spacing collar, is located the promotion portion that the tight portion in top deviates from spacing collar one side, the tight portion in top is pressed at the cam surface, and the promotion portion stretches into in the first recess of cam inner wall.
Three first grooves in an annular array on the inner wall of the cam respectively correspond to three pushing parts on the central shaft; the two poking teeth correspond to the front side and the rear side of the first groove in the rotating direction;
every stirring tooth extends along the direction of rotation zigzag of cam, and every stirs the tooth and includes first ladder, second ladder, and the interval between first ladder and the cam centre of a circle is less than the clearance between second ladder and the cam centre of a circle, and the second ladder is located the direction of rotation the place ahead of first ladder, recessed setting between the first ladder of second ladder and adjacent stirring tooth.
The lug is correspondingly arranged at one end of the first step close to the second step.
The spring is divided into a torsion spring section limited in the fixed disc curved groove and an elastic wire extending out of the curved groove; the fixing disc is provided with a fixing disc, the fixing disc is provided with a curved groove, the curved groove is used for clamping and embedding the end part of the torsion spring section, a sinking groove for accommodating the torsion spring section is arranged on the fixing disc by taking the curved groove as the center, and the diameter of the sinking groove is larger than that of the torsion spring section;
the elastic thread abuts against the first protrusion of the bump and/or the central shaft.
The number of the springs is less than or equal to that of the sunk grooves in the fixed disc, and the number of the tooth blocks is less than or equal to that of the springs.
And a positioning block is arranged between two adjacent sinking grooves on the fixed disc, the positioning block is fan-shaped, and two straight edges of the positioning block are respectively attached to the tooth blocks on two sides.
The tooth piece is equipped with two driven teeth towards cam one side, and two driven teeth include: the first tooth and the second tooth are respectively positioned on two sides of the second protrusion of the tooth block, the first tooth corresponds to the first step, the second tooth corresponds to the second step, and the size of the first tooth is larger than that of the second tooth.
First sawtooth on the tooth piece sets up towards one side fillet of activity dish, and the equal fillet of both ends face sets up around the second sawtooth on the activity dish along the center pin direction.
An adjustment method using a manual recliner, comprising the steps of:
initial state: the first sawtooth of the tooth block and the second sawtooth of the movable disc are in a meshed state, at the moment, the first step of the shifting tooth is in contact with the first tooth of the driven tooth, the second step of the shifting tooth is in contact with the second tooth of the driven tooth, the second bulge of the tooth block is positioned in the middle of the accommodating groove, the spring is in a slight compression state,
and (3) starting adjustment: the external handle rotates to drive the central shaft to rotate; when the central shaft rotates to be abutted against the side wall of the recess of the cam, the cam is driven to rotate; the rotation direction of the cam is the direction of the poking teeth, the first step and the second step of the poking teeth are far away from the driven teeth along with the rotation of the cam, when the cam rotates until the first teeth of the driven teeth fall in the first groove of the cam, the driven teeth lose the support of the poking teeth, meanwhile, the second convex block starts to move towards the sliding groove from the containing groove to drive the tooth block to approach to the circle center position of the angle adjuster, at the moment, the first sawteeth of the tooth block are separated from the second sawteeth of the movable disc, the shell consisting of the fixed disc, the movable disc and the closed ring can rotate freely to drive the outside seat back to rotate, the elastic line of the spring is pushed by the pushing part of the central shaft and the convex block of the cam to deform,
resetting: remove external force, the promotion portion of center pin is stirred to the elastic wire of spring, the lug of cam, make the cam and the rotation direction antiport of adjustment in-process, the cam reversal in-process, stir the second ladder of tooth, first ladder returns gradually, the first tooth of driven tooth is gradually by first ladder jack-up along the hypotenuse of first ladder, the second of tooth piece is protruding to reply to the intermediate position of holding tank from the sliding tray this moment, the tooth piece is to the second sawtooth motion of activity dish inner wall, until first sawtooth, the meshing of second sawtooth, it is spacing to realize reseing.
The invention has the following beneficial effects:
the invention has compact and reasonable structure and convenient operation, and can realize the unlocking, angle adjustment and locking of the backrest of the seat and also enable the backrest to enter an idle stroke area by being different from the conventional electric angle adjuster and the conventional manual angle adjuster and by matching the mask, the fixed disc, the cam, the tooth block, the spring, the movable disc, the central shaft and the closed ring and driving the components in the chamber formed by the mask, the movable disc, the fixed disc and the closed ring.
In the internal structure of the angle adjuster, the tooth block, the spring, the cam, the mask and the movable disc are overlapped in the axial direction, so that the clearance between the parts is smaller, and on the basis, the clearance eliminating principle of the angle adjuster is as follows: the contact surface of the cam shifting tooth and the tooth block driven tooth is of a zigzag ladder structure, when the shifting tooth rotates towards one side of the second ladder, the first tooth, the second tooth and the first ladder and the second ladder of the shifting tooth are gradually far away until the first tooth falls on the concave position between two adjacent shifting teeth, the driven tooth loses the support of the shifting tooth, under the action of a back spring of the tooth block, the second bulge on the tooth block moves along the sliding groove, the tooth block approaches to the circle center of the angle adjuster, the first sawtooth of the tooth block is far away from the second sawtooth of the movable disc, meanwhile, in the moving process of the tooth block, the edges on the two sides of the tooth block move along the side edges of the fan-shaped positioning block, the tooth block and the fan-shaped positioning block are clamped mutually, when the tooth block moves relative to the cam, the clamping action of the fan-shaped positioning block can enable the gap between the shifting tooth and the driven tooth to be tightly pressed and eliminated, and under the action of the poking teeth, the driven teeth and the fan-shaped positioning blocks, the motion path of the tooth blocks is arc-shaped, and the advancing direction of the tooth blocks obliquely points to the rotating direction departing from the cam. Under the premise of the movement direction, the clearance between the tooth block and the cam is pressed tightly and reduced again, so that the purpose of eliminating the clearance is achieved.
The toggle tooth is of a zigzag stepped structure, on one hand, a first step and a second step can be clearly distinguished through the folding angle of the folding line so as to correspond to the first tooth and the second tooth on two sides of the second protrusion of the tooth block, and on the other hand, the side edge of the oblique line can facilitate the first tooth and the second tooth to slide on the toggle tooth.
According to the angle adjuster, the longitudinal strength can be effectively improved by the structure that the components are clamped mutually and the reliable shapes and meshing relations of the first saw teeth and the second saw teeth are assisted, and the longitudinal strength is increased from conventional 2000Nm to 5000Nm or even higher, so that the angle adjuster is suitable for a front seat and a rear seat with higher stress requirements.
The number of the springs and the number of the tooth blocks can be changed at will, the number of the springs can be adjusted according to the requirements of users, the more the number of the springs is, the larger the elastic force is, the larger the external force needs to be applied during adjustment is, and the different adjustment hand feeling requirements of the users can be adapted.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic view of another embodiment of the present invention.
Fig. 3 is an exploded view of the present invention.
Fig. 4 is an exploded view from another perspective of the present invention.
FIG. 5 is a schematic view of the structure of the central shaft of the present invention.
Fig. 6 is a schematic structural view of a spring according to the present invention.
Fig. 7 is a schematic view of the cam structure of the present invention.
Fig. 8 is a schematic view of another cam structure according to the present invention.
Fig. 9 is a schematic structural view of the tooth block of the present invention.
Fig. 10 is a structural schematic diagram of another view angle of the tooth block of the present invention.
Fig. 11 is a schematic structural view of the movable plate of the present invention.
Fig. 12 is a schematic view of the structure of the mask of the present invention.
FIG. 13 is a schematic view of a hidden fixing plate according to the present invention.
FIG. 14 is a schematic view of the hidden fixed plate and partial spring of the present invention for showing the matching relationship of the cam and the tooth block.
FIG. 15 is a schematic view of the present invention showing the structure of the hidden fixing plate, part of the spring and part of the tooth block.
FIG. 16 is a schematic diagram of the relative positions of the tooth block, the spring and the fixing plate in the present invention.
Wherein: 1. a central shaft; 2. fixing the disc; 3. a movable tray; 4. a closed ring; 5. a cam; 6. a face mask; 7. a tooth block; 8. a spring;
101. a first protrusion; 102. a shaft lever; 103. a limiting ring; 104. a tightening part; 105. a pushing part;
201. a curved groove; 202. sinking a groove; 203. positioning blocks;
301. a second saw tooth;
501. a first groove; 502. a dial tooth; 503. a bump; 504. a first step; 505. a second step;
601. accommodating grooves; 602. a sliding groove;
701. a second protrusion; 702. a driven tooth; 703. a first saw tooth; 704. a first tooth; 705. a second tooth;
801. a torsion spring section; 802. an elastic thread.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1-16, the manual recliner of the present embodiment includes a central shaft 1 connected to an external power source, a transmission assembly driven by the central shaft 1, a sealing assembly covering both sides of the transmission assembly,
the sealing component comprises a fixed disc 2, a movable disc 3 matched with the fixed disc 2 and a closed ring 4 hooped at the wiring position of the fixed disc 2 and the movable disc 3,
the transmission assembly comprises a cam 5 which is coaxial with the central shaft 1, a face mask 6 which is driven by the cam 5 and a tooth block 7, and the transmission assembly also comprises a spring 8 which is arranged on the fixed disk 2;
the outer wall of the central shaft 1 is provided with a first bulge 101, the inner wall of the cam 5 is correspondingly provided with a first groove 501, and the size of the first groove 501 is larger than that of the first bulge 101;
the face mask 6 is coaxially sleeved on the central shaft 1 and is parallel to the cam 5, a plurality of accommodating grooves 601 are formed in the face mask 6, a fixing disc 2 is provided with a sinking groove, a tooth block 7 is correspondingly arranged in the sinking groove, one side, facing the accommodating grooves 601, of the tooth block 7 is provided with second protrusions 701, the accommodating grooves 601 extend out of a sliding groove 602 along the rotating direction of the cam 5, the sliding groove 602 obliquely points to the circle center position of the face mask 6 along the rotating direction of the cam 5, and the second protrusions 701 reciprocate in the sliding groove 602;
one side of the tooth block 7 facing the cam 5 is provided with a driven tooth 702, the peripheral annular array of the cam 5 is provided with a poking tooth 502, and when the cam 5 rotates, the poking tooth 502 pushes the driven tooth 702;
a first sawtooth 703 is arranged on one side of the tooth block 7, which is far away from the cam 5, a second sawtooth 301 is correspondingly arranged on the inner wall of the movable disc 3, and the first sawtooth 703 and the second sawtooth 301 are in a meshing and separating state in the process that the tooth block 7 moves along the sliding groove 602;
the face guard 6 is provided with a curved groove 201 for accommodating the spring 8, one surface of the cam 5 facing the fixed disk 2 is provided with a convex block 503, one end of the spring 8 is limited in the curved groove 201, the other end of the spring abuts against the convex block 503, and the cam 5 rotates to drive the spring 8 to compress.
The central shaft 1 comprises a hollow shaft rod 102 and a limiting ring 103 coaxially arranged on the outer circular surface of the shaft rod 102, the first bulge 101 is annularly arrayed on one side, facing the cam 5, of the limiting ring 103, the first bulge 101 is divided into a jacking portion 104 connected with the limiting ring 103 and a pushing portion 105 located on one side, away from the limiting ring 103, of the jacking portion 104, the pushing portion 104 is pressed on the surface of the cam 5, and the pushing portion 105 extends into a first groove 501 in the inner wall of the cam 5.
Three first grooves 501 in an annular array on the inner wall of the cam 5 respectively correspond to the three pushing parts 105 on the central shaft 1; the poking teeth 502 on the outer wall of the cam 5 are in an annular array, and every two poking teeth 502 correspond to the front side and the rear side of the rotation direction of one first groove 501;
each poking tooth 502 extends in a zigzag shape along the rotation direction of the cam 5, each poking tooth 502 comprises a first step 504 and a second step 505, the distance between the centers of circles of the first step 504 and the cam 5 is smaller than the gap between the centers of circles of the second step 505 and the cam 5, the second step 505 is positioned in front of the rotation direction of the first step 504, and the second step 505 and the first step 504 of the adjacent poking tooth 502 are arranged in a concave mode.
The bump 503 is correspondingly disposed at an end of the first step 504 close to the second step 505.
The spring 8 is divided into a torsion spring section 801 limited in the curved groove 201 of the fixed disc 2 and an elastic wire 802 extending out of the curved groove 201; the curved groove 201 is used for clamping and embedding the end part of the torsion spring section 801, a sunk groove 202 for accommodating the torsion spring section 801 is arranged on the fixed disc 2 by taking the curved groove 201 as the center, and the diameter of the sunk groove 202 is larger than that of the torsion spring section 801;
the elastic wire 802 abuts on the bump 503 and/or the first protrusion 101 of the central shaft 1.
The number of the springs 8 is less than or equal to the number of the sunken grooves 202 on the fixed disc 2, and the number of the tooth blocks 7 is less than or equal to the number of the springs 8.
A positioning block 203 is arranged between two adjacent sinking grooves 202 on the fixed disc 2, the positioning block 203 is fan-shaped, and two straight edges of the positioning block 203 are respectively attached to the tooth blocks 7 on two sides.
The side of the gear block 7 facing the cam 5 is provided with two driven teeth 702, and the two driven teeth 702 comprise: and a first tooth 704 and a second tooth 705 respectively positioned at two sides of the second protrusion 701 of the tooth block 7, wherein the first tooth 704 corresponds to the first step 504, the second tooth 705 corresponds to the second step 505, and the size of the first tooth 704 is larger than that of the second tooth 705.
The first sawtooth 703 on the tooth block 7 is arranged in a round shape facing one side of the movable disc 3, and the second sawtooth 301 on the movable disc 3 is arranged in a round shape along the front end face and the rear end face of the central shaft 1.
The adjusting method using the manual recliner of the embodiment includes the following steps:
initial state: the first sawtooth 703 of the tooth block 7 and the second sawtooth 301 of the movable disk 3 are in a meshing state, at this time, the first step 504 of the dialing tooth 502 is in contact with the first tooth 704 of the driven tooth 702, the second step 505 of the dialing tooth 502 is in contact with the second tooth 705 of the driven tooth 702, the second protrusion 701 of the tooth block 7 is located at the middle position of the accommodating groove 601, the spring 8 is in a slightly compressed state,
and (3) starting adjustment: the external handle rotates to drive the central shaft 1 to rotate; when the central shaft 1 rotates to abut against the concave side wall of the cam 5, the cam 5 is driven to rotate; the rotation direction of the cam 5 is the direction of the toggle teeth 502, the first step 504 and the second step 505 of the toggle teeth 502 are far away from the driven teeth 702 along with the rotation of the cam 5, when the cam 5 rotates until the first tooth 704 of the driven teeth 702 falls in the first groove 501 of the cam 5, the driven teeth 702 lose the support of the toggle teeth 502, and the second convex block 503 starts to move from the accommodating groove 601 to the sliding groove 602 to drive the tooth block 7 to approach to the center of the angle adjuster, at this time, the first sawtooth 703 of the tooth block 7 is separated from the second sawtooth 301 of the movable disc 3, the housing composed of the fixed disc 2, the movable disc 3 and the closed ring 4 can rotate freely to drive the outside seat back to rotate, the elastic line 802 of the spring 8 is pushed by the pushing part 105 of the central shaft 1 and the convex block 503 of the cam 5 to deform,
resetting: when the external force is removed, the elastic wire 802 of the spring 8 stirs the pushing part 105 of the central shaft 1 and the convex block 503 of the cam 5, so that the cam 5 rotates in the direction opposite to the rotating direction in the adjusting process, the second step 505 and the first step 504 of the stirring tooth 502 gradually retract in the process of reversing the cam 5, the first tooth 704 of the driven tooth 702 is gradually jacked up by the first step 504 along the inclined edge of the first step 504, at this time, the second protrusion 701 of the tooth block 7 returns to the middle position of the accommodating groove 601 from the sliding groove 602, and the tooth block 7 moves towards the second sawtooth 301 on the inner wall of the movable disk 3 until the first sawtooth 703 and the second sawtooth 301 are meshed, so that the reset limit is realized.
The concrete structure and the working principle of the invention are as follows:
the specific structure and working process of the embodiment are as follows:
as shown in fig. 3 and 4, each angle adjuster comprises a housing and an internal transmission structure, the housing is composed of a fixed disc 2, a movable disc 3, a face mask 6 and a closed ring 4, the fixed disc 2, the movable disc 3 and the face mask 6 form a hollow chamber, the closed ring 4 is installed at the circumferential position of the chamber and is welded and fixed with other parts, and a hollow chamber is formed in the middle.
The welding and fixing is the last step, and the actual installation sequence is as follows: a fixed disc 2 is prepared, a central shaft 1 penetrates through the middle of the fixed disc 2, and a spring 8 is arranged on the fixed disc 2. In order to limit the spring 8 conveniently, annular array sinking grooves are formed in the fixed disc 2, and a semicircular block body is convexly arranged in the middle of each sinking groove and can be just embedded in the middle of the torsion spring section 801 of the spring 8; between this semicircular block and the counter sink an arc-shaped part is formed, i.e. a curved groove for the retaining spring 8. After the spring 8 is installed, the torsion spring section 801 is limited and fixed, the elastic wire 802 extends to the central shaft 1 and contacts with the first protrusion 101 of the central shaft 1 and is located in front of the rotation direction of the first protrusion 101, and when the central shaft 1 rotates, the elastic wire 802 is pushed, so that the elastic wire 802 and the torsion spring section 801 are elastically deformed, and the compression amount is increased.
Then, the cam 5 is sleeved on the central shaft 1, first grooves 501 are annularly arrayed on the inner wall of the middle hole of the cam 5, the first grooves 501 correspond to the first protrusions 101, the tightening parts 104 of the first protrusions 101 tighten the surface, facing the fixed disk 2, of the cam 5, and the pushing parts 105 of the first protrusions 101 are embedded in the first grooves 501.
After the cam 5 is mounted, the tooth block 7 is mounted. It should be noted that there is no fixed number for the spring 8 and the tooth block 7, and the number can be selected according to the wishes of the customer. Because the tooth block 7 is engaged with the saw teeth of the movable disc 3, theoretically, the purpose of engagement limiting can be realized as long as the saw teeth exist; the more the number of meshing teeth is, the more reliable the meshing limit is. The larger the number of springs 8, the larger the force required to turn the central shaft 1.
When the tooth block 7 is installed, the tooth block is pressed on the spring 8 and just falls into the sinking grooves of the fixed disc 2, and a fan-shaped positioning block 203 is arranged between two adjacent sinking grooves and clamped at two sides of the tooth block 7.
On the basis that the tooth block 7 is installed, the face mask 6 is sleeved on the central shaft 1, and the second protrusions 701 on the tooth block 7 just fall into the accommodating grooves 601 of the face mask 6.
The movable disk 3 is mounted with the second saw-tooth 301 of the movable disk 3 engaged with the first saw-tooth 703 of the block 7.
A positioning ring is arranged between the movable disc 3 and the fixed disc 2 and is sleeved on the fixed disc 2, and the contact gap between the positioning ring and the movable disc 3 is welded and fixed to limit the transmission structure in the cavity.
As an optimized way, as shown in fig. 14, the toggle teeth 502 in this embodiment are arranged in a zigzag stepped structure, and each toggle tooth 502 is divided into two steps with different diameters;
the driven teeth 702 in this embodiment are two toothed blocks located on two sides of the second protrusion 701, and respectively correspond to two steps of the dialing teeth 502. Wherein, the smaller one of the two toothed blocks corresponds to the step with the smaller diameter of the dial tooth 502, and the larger one of the two toothed blocks corresponds to the step with the larger diameter of the dial tooth 502.
In another embodiment of the present invention, the driven tooth 702 is composed of a first tooth 704 and a second tooth 705 which are positioned at two sides of the second protrusion 701, and the size of the protruding tooth block 7 of the first tooth 704 is larger than that of the protruding tooth block 7 of the second tooth 705, so that in an initial state, the contact surfaces of the toggle tooth 502 and the driven tooth 702 are as large as possible; when the chair back rotates to a state of the chair back to be adjusted, namely the first sawtooth 703 and the second sawtooth 301 are separated, the first tooth 704 with a larger size just can fall between two adjacent dialing teeth 502, and the depth between the two dialing teeth 502 is actually equal to the height of the second step 505 protruding out of the outer circumference of the cam 5, so that the depth is larger relative to the first step 504, but just for the first tooth 704, the first sawtooth 703 and the second sawtooth 301 can be completely separated.
When the cam 5 rotates reversely, the first tooth 704 rubs the oblique vertex angle of the first step 504 and returns to the position right above the first step 504, and the surface of the first tooth 704 contacting the oblique vertex angle of the first step 504 is an inclined surface, that is, the side surface of the first tooth 704 facing the second protrusion 701 is an inclined surface, so that the first tooth can smoothly return to the position with the oblique vertex angle of the first step 504 arranged in a round shape under the condition of small friction.
The transmission process is as follows: the central shaft 1 rotates to drive the cam 5 to rotate, the cam 5 drives the tooth block 7 to rotate in the rotating process, the tooth block 7 drives the spring 8 to elastically deform, and the compression degree of the spring 8 is increased; when the first saw tooth 703 of the tooth block 7 is disengaged from the second saw tooth 301 of the movable disc 3, the spring 8 is in a deformation compression state, the compression deformation is obviously greater than the compression amount of the spring 8 in the initial state of the angle adjuster, at the moment, the chair back is swung, external force is removed after the chair back is adjusted to a proper position, the elastic line 802 of the spring 8 stirs the central shaft 1 to reversely rotate, the cam 5 is driven to reversely rotate, the tooth block 7 is reset along with the elastic line, and is meshed with the saw teeth of the movable disc 3, and the limiting is realized.
The above description is intended to be illustrative and not restrictive, and the scope of the invention is defined by the appended claims, which may be modified in any manner within the scope of the invention.
The above description is intended to be illustrative and not restrictive, and the scope of the invention is defined by the appended claims, which may be modified in any manner within the scope of the invention.
Claims (10)
1. The utility model provides a manual angle modulation ware, includes center pin (1) that links to each other with external power source, by the transmission assembly that center pin (1) drove, has the seal assembly, its characterized in that in the cladding of transmission assembly both sides:
the sealing component comprises a fixed disk (2), a movable disk (3) matched with the fixed disk (2), and a closed ring (4) hooped at the wiring position of the fixed disk (2) and the movable disk (3),
the transmission assembly comprises a cam (5) which is coaxial with the central shaft (1), a face mask (6) and a tooth block (7) which are driven by the cam (5), and the transmission assembly also comprises a spring (8) which is arranged on the fixed disk (2);
the outer wall of the central shaft (1) is provided with a first bulge (101), the inner wall of the cam (5) is correspondingly provided with a first groove (501), and the size of the first groove (501) is larger than that of the first bulge (101);
the mask (6) is coaxially sleeved on the central shaft (1) and is parallel to the cam (5), a plurality of accommodating grooves (601) are formed in the mask (6), a sinking groove is formed in the fixed disk (2), the tooth block (7) is correspondingly installed in the sinking groove, a second protrusion (701) is arranged on one side, facing the accommodating grooves (601), of the tooth block (7), the accommodating grooves (601) extend out of the sliding groove (602) along the rotating direction of the cam (5), the sliding groove (602) points to the circle center position of the mask (6) along the rotating direction of the cam (5), and the second protrusion (701) moves in the sliding groove (602) in a reciprocating mode;
one side of the tooth block (7) facing the cam (5) is provided with driven teeth (702), the periphery of the cam (5) is annularly arrayed with poking teeth (502), and when the cam (5) rotates, the poking teeth (502) push the driven teeth (702);
a first sawtooth (703) is arranged on one side of the tooth block (7) departing from the cam (5), a second sawtooth (301) is correspondingly arranged on the inner wall of the movable disc (3), and the first sawtooth (703) and the second sawtooth (301) are in two states of meshing and separating in the process that the tooth block (7) moves along the sliding groove (602);
be equipped with curved groove (201) that is used for holding spring (8) on face guard (6), be equipped with lug (503) on cam (5) the one side towards fixed disk (2), spring (8) one end is spacing in curved groove (201), and the other end is contradicted on lug (503), and cam (5) rotate and drive spring (8) compression.
2. A manual recliner as set forth in claim 1 wherein: the center pin (1) includes axostylus axostyle (102), the coaxial spacing collar (103) that sets up at axostylus axostyle (102) excircle surface that the cavity set up, first protruding (101) annular array is in spacing collar (103) one side towards cam (5), and first protruding (101) divide into tight portion in top (104) that links to each other with spacing collar (103), lie in tight portion in top (104) and deviate from pushing part (105) of spacing collar (103) one side, tight portion in top (104) pressure is on cam (5) surface, and pushing part (105) stretch into in first recess (501) of cam (5) inner wall.
3. A manual recliner as set forth in claim 2 wherein: three first grooves (501) in an annular array on the inner wall of the cam (5) respectively correspond to three pushing parts (105) on the central shaft (1); the poking teeth (502) on the outer wall of the cam (5) are in an annular array, and every two poking teeth (502) correspond to the front side and the rear side of the rotation direction of one first groove (501);
every is dialled tooth (502) and is extended along the direction of rotation zigzag of cam (5), and every is dialled tooth (502) and includes first ladder (504), second ladder (505), and the interval between first ladder (504) and the cam (5) centre of a circle is less than the clearance between second ladder (505) and the cam (5) centre of a circle, and second ladder (505) are located the direction of rotation the place ahead of first ladder (504), recessed setting between second ladder (505) and the first ladder (504) of adjacent dialling tooth (502).
4. A manual recliner as set forth in claim 3 wherein: the lug (503) is correspondingly arranged at one end of the first step (504) close to the second step (505).
5. A manual recliner as set forth in claim 2 wherein: the spring (8) is divided into a torsion spring section (801) limited in the curved groove (201) of the fixed disc (2) and an elastic wire (802) extending out of the curved groove (201); the curved groove (201) is used for clamping and embedding the end part of the torsion spring section (801), a sunk groove (202) used for accommodating the torsion spring section (801) is formed in the fixed disc (2) by taking the curved groove (201) as the center, and the diameter of the sunk groove (202) is larger than that of the torsion spring section (801);
the elastic thread (802) is abutted against the bump (503) and/or the first protrusion (101) of the central shaft (1).
6. A manual recliner as set forth in claim 5 wherein: the number of the springs (8) is less than or equal to that of the sunk grooves (202) in the fixed disc (2), and the number of the tooth blocks (7) is less than or equal to that of the springs (8).
7. A manual recliner as set forth in claim 5 wherein: a positioning block (203) is arranged between two adjacent sinking grooves (202) on the fixed disc (2), the positioning block (203) is fan-shaped, and two straight edges of the positioning block (203) are respectively attached to the tooth blocks (7) on the two sides.
8. A manual recliner as set forth in claim 3 wherein: the tooth piece (7) is equipped with two driven teeth (702) towards cam (5) one side, and two driven teeth (702) include: the first tooth (704) and the second tooth (705) are respectively positioned on two sides of the second protrusion (701) of the tooth block (7), the first tooth (704) corresponds to the first step (504), the second tooth (705) corresponds to the second step (505), and the size of the first tooth (704) is larger than that of the second tooth (705).
9. A manual recliner as set forth in claim 1 wherein: first sawtooth (703) on the tooth piece (7) are towards one side fillet setting of activity dish (3), and second sawtooth (301) on the activity dish (3) are along the equal fillet setting of both ends face around center pin (1) direction.
10. An adjustment method using the manual recliner of claim 1 comprising the steps of:
initial state: the first sawtooth (703) of the tooth block (7) and the second sawtooth (301) of the movable disk (3) are in a meshing state, at the moment, the first step (504) of the dialing tooth (502) is in contact with the first tooth (704) of the driven tooth (702), the second step (505) of the dialing tooth (502) is in contact with the second tooth (705) of the driven tooth (702), the second bulge (701) of the tooth block (7) is positioned in the middle of the accommodating groove (601), and the spring (8) is in a compressed state,
and (3) starting adjustment: the external handle rotates to drive the central shaft (1) to rotate; when the central shaft (1) rotates to be abutted against the side wall of the recess of the cam (5), the cam (5) is driven to rotate; the rotation direction of the cam (5) is the direction of the shifting tooth (502), the first step (504) and the second step (505) of the shifting tooth (502) are far away from the driven tooth (702) along with the rotation of the cam (5), when the cam (5) rotates until the first tooth (704) of the driven tooth (702) falls into the first groove (501) of the cam (5), the driven tooth (702) loses the support of the shifting tooth (502), meanwhile, the second lug (503) starts to move towards the sliding groove (602) from the accommodating groove (601), the tooth block (7) is driven to approach to the circle center position of the device, at the moment, the first sawtooth (703) of the tooth block (7) is separated from the second sawtooth (301) of the movable disc (3), a shell consisting of the fixed disc (2), the movable disc (3) and the closed ring (4) can freely rotate, the chair back of the external chair is driven to rotate, and the elastic line (802) of the spring (8) is pushed by the pushing part (105) of the central shaft (1), The convex block (503) of the cam (5) is pushed to deform,
resetting: removing external force, the elastic wire (802) of the spring (8) stirs the pushing part (105) of the central shaft (1) and the convex block (503) of the cam (5), so that the cam (5) and the rotating direction in the adjusting process rotate reversely, in the reversing process of the cam (5), the second step (505) and the first step (504) of the stirring tooth (502) gradually retract, the first tooth (704) of the driven tooth (702) is gradually jacked up by the first step (504) along the inclined edge of the first step (504), at the moment, the second protrusion (701) of the tooth block (7) returns to the middle position of the accommodating groove (601) from the sliding groove (602), the tooth block (7) moves towards the second sawtooth (301) on the inner wall of the movable disc (3) until the first sawtooth (703) and the second sawtooth (301) are meshed, and the resetting and limiting are realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110405104.0A CN113147533A (en) | 2021-04-15 | 2021-04-15 | Manual angle adjuster and adjusting method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110405104.0A CN113147533A (en) | 2021-04-15 | 2021-04-15 | Manual angle adjuster and adjusting method |
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| CN113147533A true CN113147533A (en) | 2021-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110405104.0A Pending CN113147533A (en) | 2021-04-15 | 2021-04-15 | Manual angle adjuster and adjusting method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113503307A (en) * | 2021-08-09 | 2021-10-15 | 金华市林业技术推广站 | Azalea greenhouse fixing connector |
| US11524611B2 (en) * | 2020-10-14 | 2022-12-13 | Hyundai Transys Incorporated | Seat reclining device |
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| US20030230923A1 (en) * | 2000-10-13 | 2003-12-18 | Araco Kabushiki Kaisha | Reclining device for a seat |
| CN103857314A (en) * | 2011-06-20 | 2014-06-11 | 麦格纳座椅公司 | Disc recliner with internal leaf springs |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113503307A (en) * | 2021-08-09 | 2021-10-15 | 金华市林业技术推广站 | Azalea greenhouse fixing connector |
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Application publication date: 20210723 |