CN114643911A

CN114643911A - Seat angle adjuster

Info

Publication number: CN114643911A
Application number: CN202210343466.6A
Authority: CN
Inventors: 李敏; 江冲; 罗贤虎
Original assignee: Hubei Aviation Precision Machinery Technology Co Ltd
Current assignee: Hubei Aviation Precision Machinery Technology Co Ltd
Priority date: 2022-04-02
Filing date: 2022-04-02
Publication date: 2022-06-21
Also published as: JP2023152241A; JP7436561B2

Abstract

The invention discloses a seat angle adjuster, which comprises a sliding block, a sliding groove plate, a ratchet wheel and a locking cam, wherein the sliding block is arranged on the inner side wall of the sliding groove plate and can move along the radial direction; the sliding block comprises a first base plate, the first base plate is provided with a first stamping groove, the sliding groove plate comprises a second base plate, the second base plate is provided with a second stamping groove, the ratchet wheel comprises a third base plate, the third base plate is provided with a third stamping groove, the locking cam comprises a fourth base plate, the fourth base plate is provided with a fourth stamping groove, and the first base plate, the second base plate, the third base plate and the fourth base plate are the same in thickness. The thicknesses of the sliding block, the sliding groove plate, the ratchet wheel and the locking cam substrate are the same, the simultaneous production of the same die is realized, the efficiency is improved, and the cost is reduced.

Description

Seat angle adjuster

Technical Field

The invention relates to the technical field of seats, in particular to a seat angle adjuster.

Background

At present, the production mode of the seat angle adjuster is mainly that part single-piece stamping is carried out, follow-up treatment such as heat treatment and deburring is carried out after the stamping is finished, and finally the angle adjuster assembly is carried out on an assembly line, the stamping, the heat treatment and the assembly of the part are carried out on different production lines, the part needs to be transported to a warehouse after the part is produced on different production lines and then is transported to the next production line, the transportation period and the warehouse management period are long, the cost is high, and the angle adjuster cost is high.

Disclosure of Invention

The invention aims to provide a seat angle adjuster, which can be used for simultaneously producing all stamping parts on the same set of die and forming the stamping parts on the same production line, thereby improving the production efficiency and reducing the production cost.

In order to solve the technical problem, the invention provides a seat angle adjuster, which comprises a sliding block, a sliding groove plate fixedly connected with a seat pan, a ratchet wheel fixedly connected with a seat backrest, and a locking cam, wherein the sliding block is arranged on the inner side wall of the sliding groove plate and can move along the radial direction, the outer side of the peripheral wall of the sliding block is provided with sliding block ratchets, the ratchet wheel can be relatively rotatably arranged on the sliding groove plate, ratchet wheel ratchets are arranged on the inner side of the peripheral wall, and the locking cam can drive the sliding block to move outwards so as to enable the sliding block ratchets to be meshed with the ratchet wheel ratchets;

the slider includes a first substrate having a first stamped groove, the chute plate includes a second substrate having a second stamped groove, the ratchet includes a third substrate having a third stamped groove, the locking cam includes a fourth substrate having a fourth stamped groove, the first substrate, the second substrate, the third substrate and the fourth substrate are the same thickness.

The sliding block, the sliding groove plate, the ratchet wheel and the locking cam are all stamping parts, the sliding block is formed by stamping the first substrate, the sliding groove plate is formed by stamping the second substrate, the ratchet wheel is formed by stamping the third substrate, and the locking cam is formed by stamping the fourth substrate; meanwhile, based on the unification of fine blanking dies, the die stamping production line and the heat treatment production line can be integrated to the angle adjuster assembly line together, one production line is used for completing the process from the raw material to the finished product angle adjuster, intermediate links such as part transferring, warehouse storage and management are omitted, the production efficiency is improved, and the production cost is reduced.

Optionally, the inner side wall of the chute plate is provided with a chute extending in the radial direction, and the slider is mounted inside the chute.

Optionally, the number of the sliding grooves formed in the sliding groove plate is five, the five sliding grooves are uniformly distributed along the circumferential direction, the seat angle adjuster comprises five sliding blocks, and the sliding blocks are arranged in the sliding grooves in a one-to-one correspondence manner.

Optionally, a protrusion is arranged on one side of the sliding block facing the ratchet wheel, the ratchet wheel further comprises an unlocking cam and a driving shaft, the unlocking cam is connected with the locking cam in a circumferential limiting manner, a locking surface corresponding to the sliding block is arranged on the outer edge of the locking cam, the unlocking cam is provided with a driving sliding groove extending along the circumferential direction, and the protrusions are inserted into the driving sliding groove in a one-to-one corresponding manner;

the driving shaft rotates, and the driving sliding chute can drive the sliding block to move inwards so as to enable the sliding block ratchet to be separated from the ratchet wheel ratchet; the driving shaft rotates reversely, and the locking surface can push the sliding block to move outwards.

Optionally, a square hole is formed in the middle of each of the locking cam and the unlocking cam, the driving shaft is provided with a square section, and the square section is inserted into the square hole to limit the circumferential direction.

Optionally, the energy storage device further comprises a return spring, the driving shaft rotates, and when the driving sliding groove drives the sliding block to move inwards, the return spring gradually stores energy.

Optionally, the inner ring of the return spring is sleeved with the square section to form circumferential limit, and the extension end of the return spring is inserted into the notch of the sliding groove plate to form circumferential limit.

Optionally, the middle part of the inner side of the sliding groove plate is provided with a mounting groove communicated with the notch, and the return spring is arranged in the mounting groove.

Optionally, the ratchet wheel further comprises an annular combination sleeve, the combination sleeve is sleeved on the outer ring of the sliding groove plate, one side wall of the combination sleeve is fixedly connected with the sliding groove plate, and a gap is formed between the other side wall of the combination sleeve and the side wall of the ratchet wheel, which faces away from the sliding groove plate.

Drawings

FIG. 1 is a schematic structural view of an embodiment of a seat recliner provided in the present invention;

FIG. 2 is a schematic structural diagram of a slider, a chute plate, a ratchet and a locking cam in the seat recliner of FIG. 1 in the thickness direction;

FIG. 3 is a schematic view of the seat recliner of FIG. 1 shown with the ratchet removed;

FIG. 4 is a schematic view of the seat recliner of FIG. 1 with the locking cam, the unlocking cam and the actuation shaft secured together;

FIG. 5 is a schematic view of the structure of FIG. 4 from another angle;

FIG. 6 is a schematic illustration of the transmission during locking of the seat recliner of FIG. 1;

FIG. 7 is a schematic structural view of the seat recliner of FIG. 1 in a locked state;

FIG. 8 is a schematic transmission diagram of the seat recliner of FIG. 1 during unlocking;

FIG. 9 is a schematic structural view of the seat recliner of FIG. 1 in an unlocked state;

FIG. 10 is a schematic view of the mounting of the return spring and the drive shaft in the seat recliner of FIG. 1;

FIG. 11 is a schematic view of the return spring of FIG. 10 mounted to the chute plate;

wherein the reference numerals in fig. 1-11 are as follows:

1-a slide block; 11 a-slider ratchet; 12-a bump; a-a first substrate;

2-a chute plate; an o-chute; 2 a-notches; b-a second substrate;

3-ratchet wheel; c-a third substrate;

4-a locking cam; 4 a-a locking surface; d-a fourth substrate;

5-unlocking the cam; 5 a-a drive chute;

6-a drive shaft;

7-a return spring; 71-epitaxial end;

8-binding sleeve.

Detailed Description

In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

The terms "first," "second," and the like, herein are used for convenience in describing two or more structures or components that are identical or similar in structure and/or function and do not denote any particular limitation in order and/or importance.

Referring to fig. 1 and 2, fig. 1 is a schematic structural diagram of a seat angle adjuster according to an embodiment of the present invention; fig. 2 is a schematic structural view of a slider, a chute plate, a ratchet and a locking cam in the seat recliner of fig. 1 in the thickness direction.

The invention provides a seat angle adjuster, which comprises a sliding block 1, a sliding groove plate 2 fixedly connected with a seat basin, a ratchet wheel 3 fixedly connected with a seat backrest and a locking cam 4, wherein the sliding block 1 is arranged on the inner side wall of the sliding groove plate 2 and can move along the radial direction, sliding block ratchets 11a are arranged on the outer side of the peripheral wall of the sliding block 1, the ratchet wheel 3 is arranged on the sliding groove plate 2 in a relatively rotating manner, ratchet wheel ratchets are arranged on the inner side of the peripheral wall, and the locking cam 4 can drive the sliding block 1 to move outwards so as to enable the sliding block ratchets 11a to be meshed with the ratchet wheel ratchets;

the slider 1 comprises a first substrate A, the first substrate A is provided with a first stamping groove, the chute plate 2 comprises a second substrate B, the second substrate B is provided with a second stamping groove, the ratchet 3 comprises a third substrate C, the third substrate C is provided with a third stamping groove, the locking cam 4 comprises a fourth substrate D, the fourth substrate D is provided with a fourth stamping groove, and the first substrate A, the second substrate B, the third substrate C and the fourth substrate D are the same in thickness and are T.

According to the invention, the sliding block 1, the sliding groove plate 2, the ratchet wheel 3 and the locking cam 4 are all stamping parts, the sliding block 1 is formed by stamping the first substrate A, the sliding groove plate 2 is formed by stamping the second substrate B, the ratchet wheel 3 is formed by stamping the third substrate C, and the locking cam 4 is formed by stamping the fourth substrate D; meanwhile, based on the unification of fine blanking dies, the die stamping production line and the heat treatment production line can be integrated to the angle adjuster assembly line together, one production line is used for completing the process from the raw material to the finished product angle adjuster, intermediate links such as part transferring, warehouse storage and management are omitted, the production efficiency is improved, and the production cost is reduced.

Referring to fig. 1, five sliding grooves o extending in the radial direction are formed in the inner side wall of the sliding groove plate 2, the five sliding grooves o are uniformly distributed in the circumferential direction, the seat angle adjuster includes five sliding blocks 1, and the sliding blocks 1 are correspondingly arranged in the sliding grooves o.

As the arrangement, the sliding groove o plays a guiding role, so that the sliding block 1 can only move along the radial direction of the sliding groove plate 2, and the sliding grooves o and the sliding blocks 1 are five in number, so that the internal space of the seat angle adjuster can be fully utilized, the material strength can be exerted to the maximum extent, and the ratchet meshing strength and the sliding groove extrusion strength are matched to the best.

Of course, in practical application, the number of the sliding grooves o and the sliding blocks 1 is not limited as long as the locking function can be achieved, and for example, the number of the sliding grooves o and the sliding blocks 1 can be four.

Please continue fig. 1, 3-9, fig. 3 is a schematic structural view of a ratchet wheel in the seat recliner of fig. 1;

FIG. 4 is a schematic view of the seat recliner of FIG. 1 with the locking cam, the unlocking cam and the actuation shaft secured together; FIG. 5 is a schematic view of the structure of FIG. 4 from another angle; FIG. 6 is a schematic illustration of the transmission during locking of the seat recliner of FIG. 1; FIG. 7 is a schematic structural view of the seat recliner of FIG. 1 in a locked condition;

FIG. 8 is a schematic transmission diagram of the seat recliner of FIG. 1 during unlocking; fig. 9 is a schematic structural view of the seat recliner of fig. 1 in an unlocked state.

According to the invention, a bulge 12 is formed on one side of the sliding block 1 facing the ratchet 3, the locking cam 4 and the unlocking cam 5 are fixed into a whole through three limiting pins, namely the locking cam 4 and the unlocking cam 5 are limited in the circumferential direction and can rotate synchronously, a locking surface 4a corresponding to the sliding block 1 is arranged on the outer edge of the locking cam 4, the unlocking cam 5 is provided with a special-shaped driving sliding groove 5a extending in the circumferential direction, the bulges 12 of the sliding block 1 are inserted into the driving sliding groove 5a in a one-to-one correspondence manner, as shown in fig. 6, when the locking cam 4 and the unlocking cam 5 rotate in the direction shown by an arrow, the locking surface 4a on the outer edge of the locking cam 4 can push the sliding block 1 to move outwards in the radial direction until the sliding block 1 is located at the position shown in fig. 7, and the sliding block ratchet 11a is meshed with the ratchet; as shown in fig. 8, when the locking cam 4 and the unlocking cam 5 rotate in the direction of the arrow, the driving slide 5a can drive the slide 1 to move radially inward until the slide 1 is in the position shown in fig. 9, and the slide ratchet 11a is disengaged from the ratchet.

Wherein, the drive of locking cam 4 and unlocking cam 5 is realized through transmission shaft 6, specifically, locking cam 4 and unlocking cam 5 middle part are provided with the quad slit, and the perisporium part of drive shaft 6 is square, and the square section cartridge of drive shaft 6 realizes that circumference is spacing in locking cam 4 and unlocking cam 5's quad slit, and drive shaft 6 rotates promptly, can drive locking cam 4 and unlocking cam 5 synchronous revolution. Since the seat is usually provided with two seat angle adjusters, the driving shaft 6 is also provided in the form of a hollow shaft in the embodiment, and the inside of the driving shaft is also square, so that a link (not shown) penetrates through the two driving shafts 6 to connect the two driving shafts 6 together, and when the passenger drives the driving shaft 6 on one side to rotate through the unlocking handle (not shown), the driving shafts 6 on both sides can synchronously rotate for unlocking.

Certainly, realize transmission shaft 6 and locking cam 4, unblock cam 5 circumference spacing, can also adopt to weld modes such as an organic whole with the three, do not do the restriction here.

With continuing reference to fig. 1, 10-11, fig. 10 is a schematic view of the installation of the return spring and the driving shaft in the seat recliner of fig. 1; fig. 11 is a schematic structural view illustrating the return spring of fig. 10 mounted on the chute plate.

The seat angle adjuster also comprises a return spring 7, wherein the inner ring of the return spring 7 is pressed together with the square section of the driving shaft 6 to realize circumferential limit, the inner side wall of the sliding groove plate 2 is provided with a mounting groove and a notch 2a communicated with the mounting groove, the middle part of the mounting groove is provided with a through hole for the driving shaft 6 to pass through, the return spring 7 is arranged in the mounting groove of the sliding groove plate 2, and the outer extension end 71 of the return spring is inserted in the notch 2a of the sliding groove plate 2 to realize circumferential limit. With the arrangement, when the drive shaft 6 is forced to rotate towards the unlocking direction, the return spring 7 can gradually store energy, when the seat back is in the unlocking state and is adjusted to the required position, the acting force applied to the drive shaft 6 is cancelled, the drive shaft 6 can reversely rotate under the restoring force of the return spring 7 until the slide block ratchet 11a is meshed with the ratchet wheel ratchet, and the seat is locked.

In practical use, the return spring 7 may not be provided, and in this case, the passenger needs to manually drive the drive shaft 6 to rotate to the lock position, and the structure is complicated by adding a lock structure to hold the drive shaft 6 at the lock position. According to the invention, the return spring 7 is arranged, so that the chair back can automatically return to the locking state, the operation is simple, the safety is high, and the method is a more preferable technical scheme.

With reference to fig. 1, the device further includes an annular coupling sleeve 8, the coupling sleeve 8 is fitted around the outer edge of the chute plate 2, and one side of the coupling sleeve is fixedly connected to the chute plate 2, and the other side of the coupling sleeve has a gap with the side wall of the ratchet 3 facing away from the chute plate 2, so as to fix the ratchet 3 and the chute plate 2 together and prevent the ratchet 3 from being separated from the chute plate 2.

The play described here should ensure that the ratchet 3 does not move axially and at the same time does not influence the rotation of the ratchet 3.

The seat recliner provided by the present invention is described in detail above, and the principle and the embodiment of the present invention are explained herein by using specific examples, and the above description of the examples is only used to help understanding the method and the core idea of the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. A seat angle adjuster is characterized by comprising a sliding block (1), a sliding groove plate (2) fixedly connected with a seat basin, a ratchet wheel (3) fixedly connected with a seat backrest and a locking cam (4), wherein the sliding block (1) is installed on the inner side wall of the sliding groove plate (2) and can move along the radial direction, sliding block ratchets (11a) are arranged on the outer side of the peripheral wall of the sliding block (1), the ratchet wheel (3) can be installed on the sliding groove plate (2) in a relatively rotating mode, ratchet wheel ratchets are arranged on the inner side of the peripheral wall, and the locking cam (4) can drive the sliding block (1) to move outwards so that the sliding block ratchets (11a) are meshed with the ratchet wheel ratchets;

the slider (1) comprises a first substrate (A) with a first stamping groove, the chute plate (2) comprises a second substrate (B) with a second stamping groove, the ratchet wheel (3) comprises a third substrate (C) with a third stamping groove, the locking cam (4) comprises a fourth substrate (D) with a fourth stamping groove, and the thicknesses of the first substrate (A), the second substrate (B), the third substrate (C) and the fourth substrate (D) are the same.

2. The seat recliner as claimed in claim 1, characterized in that the inner side wall of said runner plate (2) is provided with a radially extending runner (o), said slider (1) being mounted inside said runner (o).

3. The seat angle adjuster according to claim 2, characterized in that the number of the sliding grooves (o) of the sliding groove plate (2) is five, the sliding grooves (o) are uniformly distributed along the circumferential direction, the seat angle adjuster comprises five sliding blocks (1), and the sliding blocks (1) are installed in the sliding grooves (o) in a one-to-one correspondence manner.

4. The seat angle adjuster according to claim 1, characterized in that a protrusion (12) is arranged on one side of the sliding block (1) facing the ratchet (3), the seat angle adjuster further comprises an unlocking cam (5) and a driving shaft (6) which are connected with the locking cam (4) in a circumferential limiting manner, a locking surface (4a) corresponding to the sliding block (1) is arranged on the outer edge of the locking cam (4), the unlocking cam (5) is provided with a driving sliding groove (5a) extending along the circumferential direction, and the protrusions (12) are inserted into the driving sliding groove (5a) in a one-to-one correspondence manner;

the driving shaft (6) rotates, and the driving sliding chute (5a) can drive the sliding block (1) to move inwards so as to enable the sliding block ratchet teeth (11a) to be disengaged from the ratchet wheel ratchet teeth; the driving shaft (6) rotates reversely, and the locking surface (4a) can push the sliding block (1) to move outwards.

5. The seat recliner as claimed in claim 4 wherein said locking cam (4) and said unlocking cam (5) are provided with a square hole in the middle, and said driving shaft (6) has a square section inserted into said square hole for circumferential limitation.

6. The seat recliner as claimed in claim 5, wherein the driving mechanism further comprises a return spring (7), the driving shaft (6) rotates, and the return spring (7) gradually stores energy when the driving sliding groove (5a) drives the sliding block (1) to move inwards.

7. The seat angle adjuster according to claim 6, characterized in that the inner side wall of the sliding groove plate (2) is provided with a notch (2a), the inner ring of the return spring (7) is sleeved on the square section to form a circumferential limit, and the extension end (71) of the return spring (7) is inserted in the notch (2a) to form a circumferential limit.

8. The seat recliner as claimed in claim 7, wherein a mounting groove communicating with said notch (2a) is provided in a middle portion of said sliding plate (2), said driving shaft (6) relatively rotatably penetrates said sliding plate (2), and said return spring (7) is disposed in said mounting groove.

9. The seat recliner as claimed in any one of claims 1 to 8 further comprising an annular coupling sleeve (8), wherein the coupling sleeve (8) is fitted around the outer ring of the sliding plate (2), and one side wall of the coupling sleeve is fixedly connected with the sliding plate (2) and the other side wall of the coupling sleeve has a gap with the side wall of the ratchet wheel (3) facing away from the sliding plate (2).