CN216861232U - Seat angle adjuster and ratchet wheel for same - Google Patents

Abstract

The utility model discloses a ratchet wheel for a seat angle adjuster, wherein the ratchet wheel (3) comprises a base plate (A), the base plate (A) is provided with a stamping groove (a), ratchet wheel ratchets (3a) are arranged on the peripheral wall of the stamping groove (a), and the depth of the ratchet wheel ratchets (3a) is larger than the thickness of the base plate (A). The utility model also provides a seat angle adjuster. The ratchet wheel is formed by punching the base plate (A), and the depth of the ratchet wheel ratchet teeth (3a) is larger than the thickness of the base plate (A).

Description

Seat angle adjuster and ratchet wheel for same

Technical Field

The utility model relates to the technical field of seats, in particular to a seat angle adjuster and a ratchet wheel for the seat angle adjuster.

Background

Along with the development trend of energy conservation and emission reduction in the automobile industry, the weight of parts of an automobile needs to be continuously reduced on the premise of ensuring the safety performance, the automobile seat needs to be lighter, and the seat angle adjuster needs to be lighter, so that the requirement of the automobile industry on light weight is met.

The weight of the seat angle adjuster is reduced while the safety is ensured, and parts need to be made smaller and thinner. This purpose can also be realized through the material of chooseing for use high strength, but high strength's material can improve material cost and manufacturing cost, leads to angle modulation ware cost to increase, consequently how to improve intensity when satisfying the lightweight requirement through more reasonable structural design and part manufacturing process, make full use of material, the problem that the field personnel needed to solve urgently.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a ratchet wheel for a seat angle adjuster, which can be thinner under the condition that the depth of a gear ring is the same, so that the weight and the thickness of the angle adjuster are reduced, and the requirement of light weight is met.

Another object of the present invention is to provide a seat recliner, wherein the thickness of the ratchet wheel can be thinner under the condition that the depth of the gear ring is the same, so as to reduce the weight and thickness of the recliner and meet the requirement of light weight.

In order to solve the technical problem, the utility model provides a ratchet wheel for a seat angle adjuster, which comprises a base plate, wherein the base plate is provided with a stamping groove, ratchet wheel ratchets are arranged on the peripheral wall of the stamping groove, and the depth of the ratchet wheel ratchets is greater than the thickness of the base plate.

In the prior art, the depth of ratchet teeth of a ratchet wheel designed in the angle adjuster is smaller than the thickness of a material, the depth of the ratchet teeth of the ratchet wheel is matched with the thickness of ratchet teeth of a sliding block, namely the thickness of the sliding block is matched, the depth of the ratchet teeth of the sliding block is required to be deeper, the deeper depth of the ratchet teeth of the sliding block is required to be thicker, the thickness of the ratchet wheel inevitably causes the thickness and the weight of a core part of the angle adjuster to be increased. The traditional design mode is changed, the ratchet wheel is formed by punching the substrate, the depth of the ratchet wheel is larger than the thickness of the substrate, and the thickness of the ratchet wheel material can be thinner under the condition that the depth of the ratchet wheel is the same, so that the weight and the thickness of the angle adjuster are reduced, and the requirement of light weight is met.

The utility model also provides a seat angle adjuster, which comprises a chute plate fixedly connected with a seat basin, the ratchet wheel, a driving mechanism and at least one sliding block, wherein the ratchet wheel is fixedly connected with a seat backrest;

the driving mechanism can drive the sliding block to move outwards along the extending direction of the sliding chute so as to enable the sliding block ratchet teeth to be meshed with the ratchet wheel ratchet teeth; or the sliding chute is driven to move inwards so as to enable the sliding block ratchet teeth to be separated from the ratchet wheel ratchet teeth.

The seat angle adjuster comprises the ratchet wheel, so that the technical effect same as that of the ratchet wheel is achieved, and the details are not repeated.

Optionally, one side of one of the sliding blocks facing the ratchet wheel is provided with a first protrusion, the inner side wall of the ratchet wheel is provided with a second protrusion, the second protrusion extends along the circumferential direction, when the ratchet wheel rotates to the position where the second protrusion portion is opposite to the first protrusion in the radial direction, the outer side wall of the first protrusion can be abutted to the inner side wall of the second protrusion, and the sliding block ratchet teeth are disengaged from the ratchet wheel ratchet teeth.

Optionally, the number of the sliding grooves in the sliding groove plate is five, the sliding grooves are uniformly distributed along the circumferential direction, and the seat angle adjuster comprises five sliding blocks.

Optionally, a connecting protrusion is further disposed on one side of the slider facing the ratchet wheel, the driving mechanism includes a locking cam, an unlocking cam and a driving shaft which are connected in a circumferential limiting manner, a locking surface corresponding to the slider is disposed on the outer edge of the locking cam, the unlocking cam has a driving sliding groove extending in the circumferential direction, and the connecting protrusions are inserted into the driving sliding groove in a one-to-one correspondence manner;

the driving shaft rotates, and the driving sliding groove can drive the sliding block to move inwards; 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 driving mechanism 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, a notch is formed in the inner side wall of the sliding groove plate, the inner ring of the return spring is sleeved on the square section to form circumferential limit, and the extension end of the return spring is inserted into the notch to form circumferential limit.

Optionally, a mounting groove communicated with the groove opening is formed in the middle of the inner side wall of the sliding groove plate, the driving shaft can penetrate through the sliding groove plate in a relatively rotating mode, 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 one embodiment of a ratchet for a seat recliner provided in accordance with the present invention;

FIG. 2 is a schematic structural view of an embodiment of a seat recliner provided in the present invention;

FIG. 3 is a schematic view of an internal structure of a ratchet in the seat recliner of FIG. 2;

FIG. 4 is a schematic view of the seat recliner of FIG. 2 shown with the ratchet removed;

FIG. 5 is a schematic view of the seat recliner of FIG. 2 with the locking cam, the unlocking cam and the drive shaft fixed together;

FIG. 6 is a schematic view of the structure of FIG. 5 at another angle;

FIG. 7 is a schematic illustration of the transmission during locking of the seat recliner of FIG. 2;

FIG. 8 is a schematic structural view of the seat recliner of FIG. 2 in a locked condition;

FIG. 9 is a schematic transmission diagram of the seat recliner of FIG. 2 during unlocking;

FIG. 10 is a schematic structural view of the seat recliner of FIG. 2 in an unlocked state;

FIG. 11 is a schematic view of the mounting of the return spring and the drive shaft in the seat recliner of FIG. 2;

FIG. 12 is a schematic view of the return spring of FIG. 11 mounted to a chute plate;

wherein the reference numerals in fig. 1-12 are explained as follows:

1-a slide block; 1 a-slider ratchet; 11-a first protrusion; 12-a connecting projection;

2-a chute plate; an o-chute; 2 a-notches;

3-ratchet wheel; a-a substrate; 3 a-ratchet teeth; a-punching a slot; 31-a second protrusion;

4-a locking cam; 4 a-a locking surface;

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, fig. 1 is a schematic structural diagram of a ratchet for a seat recliner according to an embodiment of the present invention.

The utility model provides a ratchet wheel for a seat angle adjuster, wherein the ratchet wheel 3 comprises a base plate A, the base plate A is provided with a stamping groove a, ratchet wheel ratchets 3a are arranged on the peripheral wall of the stamping groove a, the depth of the ratchet wheel ratchets 3a is H, the thickness of the base plate A is T, and the depth of the ratchet wheel ratchets 3a is greater than that of the base plate A, namely H is greater than T.

In the prior art, the depth of ratchet teeth of a ratchet wheel designed in the angle adjuster is smaller than the thickness of a material, the depth of the ratchet teeth of the ratchet wheel is matched with the thickness of ratchet teeth of a sliding block, namely the thickness of the sliding block is matched, the depth of the ratchet teeth of the sliding block is required to be deeper, the deeper depth of the ratchet teeth of the sliding block is required to be thicker, the thickness of the ratchet wheel inevitably causes the thickness and the weight of a core part of the angle adjuster to be increased. The traditional design mode is changed, the ratchet wheel 3 is formed by punching the base plate A, the depth of the ratchet wheel ratchet 3a is larger than the thickness of the base plate A, and the thickness of the ratchet wheel material can be thinner under the condition that the depth of the ratchet wheel teeth is the same, so that the weight and the thickness of the angle adjuster are reduced, and the requirement of light weight is met.

The utility model also provides a seat angle adjuster, which comprises a chute plate 2 fixedly connected with a seat basin of a seat, the ratchet wheel, a driving mechanism and at least one sliding block 1, wherein the ratchet wheel 3 is fixedly connected with a seat backrest, the inner side wall of the chute plate 2 is provided with at least one chute o extending along the radial direction, the sliding blocks 1 are arranged in the chute o in a one-to-one correspondence manner, the outer side of the peripheral wall of the sliding blocks is provided with a sliding block ratchet 1a, the ratchet wheel 3 is arranged on the chute plate 2 in a relatively rotatable manner, and the inner side of the peripheral wall is provided with a ratchet wheel ratchet 3 a;

the driving mechanism can drive the sliding block 1 to move outwards along the extending direction of the sliding groove o, so that the sliding block ratchet 1a is meshed with the ratchet wheel ratchet 3a, and the seat backrest is locked; or the sliding chute 1 is driven to move inwards, so that the sliding block ratchet 1a is separated from the ratchet wheel ratchet 3a, the backrest of the seat is unlocked, and the passenger can conveniently adjust the backrest of the seat to a required angle.

The seat angle adjuster comprises the ratchet wheel, so that the technical effect same as that of the ratchet wheel is achieved, and the details are not repeated.

Referring to fig. 2 and 3, fig. 3 is a schematic view of an internal structure of a ratchet wheel in the seat recliner of fig. 2.

In the utility model, one side of one of the sliding blocks 1 facing the ratchet wheel 3 is provided with a first bulge 11, the inner side wall of the ratchet wheel 3 is provided with a second bulge 31, the second bulge 31 is of an arc structure and extends along the circumferential direction of the ratchet wheel 3, when the ratchet wheel 3 rotates until the part of the second bulge 31 is opposite to the radial direction of the first bulge 11, the outer side wall of the first bulge 11 can be abutted against the inner side wall of the second bulge 31, and the sliding block ratchet 1a is separated from the ratchet wheel ratchet 3 a.

As can be seen from the above, when the first protrusion 11 abuts against the second protrusion 31, the sliding block 1 cannot be locked, so that the folding function of the seat back can be realized, and specifically, in practical application, the first protrusion 11 and the second protrusion 31 abut against each other when the seat back is in a folded state by adjusting the relative position of the chute plate 2 and the ratchet 3, so that when the seat needs to be taken, an operator can directly rotate the seat back to the backrest position without controlling a driving mechanism, and the operation is convenient and fast; meanwhile, when the first protrusion 11 is separated from the second protrusion 31, the slider 1 automatically moves outwards under the action of a return spring (described in detail later) in the driving mechanism to be engaged with the ratchet 3a, so as to lock the seat back at the back position. In addition, the utility model is provided with the sliding block 1 with the first bulge 11 and the second bulge 31, the ratchet wheel 3 rotates for 360 degrees in one cycle, and the lockable angle of the seat is larger, thereby meeting some special requirements of customers.

With reference to fig. 2, 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 disposed 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. 2, 4-10, fig. 4 is a schematic structural view of the seat recliner of fig. 2 with the ratchet removed; FIG. 5 is a schematic view of the seat recliner of FIG. 2 with the locking cam, the unlocking cam and the drive shaft fixed together; FIG. 6 is a schematic view of the structure of FIG. 4 from another angle; FIG. 7 is a schematic illustration of the transmission during locking of the seat recliner of FIG. 2; FIG. 8 is a schematic structural view of the seat recliner of FIG. 2 in a locked condition; FIG. 9 is a schematic transmission diagram of the seat recliner of FIG. 2 during unlocking; fig. 10 is a schematic structural view of the seat recliner of fig. 2 in an unlocked state.

In the utility model, one side of the sliding block 1 facing the ratchet 3 is provided with a connecting bulge 12, the connecting bulge further comprises an unlocking cam 5, the locking cam 4 and the unlocking cam 5 are fixed into a whole through three limiting pins, namely the two limiting pins are limited in the circumferential direction and can rotate synchronously, the outer edge of the locking cam 4 is provided with a locking surface 4a corresponding to the sliding block 1, the unlocking cam 5 is provided with a special-shaped driving sliding chute 5a extending in the circumferential direction, the connecting bulges 12 of the sliding block 1 are inserted into the driving sliding chutes 5a in a one-to-one correspondence manner, as shown in fig. 7, when the locking cam 4 and the unlocking cam 5 rotate in the direction shown by an arrow, the locking surface 4a at 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. 8, and the ratchet of the sliding block 1a is meshed with the ratchet 3 a; when the locking cam 4 and the unlocking cam 5 are rotated in the direction of the arrow shown in fig. 9, the driving slide 5a can drive the slide 1 to move radially inward until the slide 1 is in the position shown in fig. 10 and the slide ratchet 1a is disengaged from the ratchet 3 a.

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 circumferentially spacingly 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 that transmission shaft 6 is spacing with the circumference of locking cam 4, unblock cam 5, can also adopt and weld modes such as an organic whole with the three, do not do the restriction here.

With continued reference to fig. 2, 11-12, fig. 11 is a schematic view of the installation of the return spring and the driving shaft in the seat recliner of fig. 2; fig. 12 is a schematic view illustrating a structure in which the return spring of fig. 11 is mounted to 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 1a and the ratchet wheel ratchet 3a are meshed, 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 utility model, 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. 2, 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 and the ratchet for the seat recliner provided by the present invention are described in detail, and the principle and the embodiment of the present invention are explained herein by using specific examples, and the description of the above 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 (10)

1. A ratchet for a seat recliner, characterized in that the ratchet (3) comprises a base plate (A) having a punching groove (a) with ratchet teeth (3a) arranged on the peripheral wall thereof, the ratchet teeth (3a) having a depth greater than the thickness of the base plate (A).

2. A seat angle adjuster, characterized by comprising a chute plate (2) fixedly connected with a seat pan of a seat, the ratchet wheel of claim 1, a driving mechanism, and at least one sliding block (1), wherein the ratchet wheel (3) is fixedly connected with a seat backrest, the inner side wall of the chute plate (2) is provided with at least one sliding groove (o) extending along the radial direction, the sliding blocks (1) are installed inside the sliding groove (o) in a one-to-one correspondence manner, the outer side of the peripheral wall of the sliding blocks is provided with sliding block ratchets (1a), the ratchet wheel (3) is installed on the chute plate (2) in a relatively rotatable manner, and the inner side of the peripheral wall is provided with the ratchet wheel ratchets (3 a);

the driving mechanism can drive the sliding block (1) to move outwards along the extending direction of the sliding chute (o) so as to enable the sliding block ratchet teeth (1a) to be meshed with the ratchet wheel ratchet teeth (3 a); or the sliding block (1) is driven to move inwards, so that the sliding block ratchet teeth (1a) are disengaged from the ratchet wheel ratchet teeth (3 a).

3. The seat recliner as claimed in claim 2 wherein one side of one of said sliders (1) facing said ratchet wheel (3) is provided with a first protrusion (11), an inner side wall of said ratchet wheel (3) is provided with a second protrusion (31), said second protrusion (31) extends in a circumferential direction, said ratchet wheel (3) rotates until said second protrusion (31) is partially opposed to said first protrusion (11) in a radial direction, an outer side wall of said first protrusion (11) can abut an inner side wall of said second protrusion (31), and said slider ratchet teeth (1a) are disengaged from said ratchet teeth (3 a).

4. The seat recliner as claimed in claim 2 wherein said runner plate (2) is provided with five said sliding grooves (o), said sliding grooves (o) being evenly distributed in the circumferential direction, said seat recliner comprising five said sliding blocks (1).

5. The seat angle adjuster according to claim 2, characterized in that a connecting protrusion (12) is further disposed on a side of the slider (1) facing the ratchet (3), the driving mechanism includes a locking cam (4), an unlocking cam (5) and a driving shaft (6) which are connected in a circumferential limiting manner, a locking surface (4a) corresponding to the slider (1) is disposed on an outer edge of the locking cam (4), the unlocking cam (5) has a driving sliding groove (5a) extending in a circumferential direction, and the connecting 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; the driving shaft (6) rotates reversely, and the locking surface (4a) can push the sliding block (1) to move outwards.

6. The seat recliner as claimed in claim 5 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.

7. The seat recliner as claimed in claim 6, wherein said drive mechanism further comprises a return spring (7), said drive shaft (6) rotates, and said return spring (7) gradually accumulates energy as said drive runner (5a) moves said slider (1) inward.

8. The seat angle adjuster according to claim 7, 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.

9. The seat recliner as claimed in claim 8, wherein a mounting groove communicating with said notch (2a) is formed in a middle portion of an inner side wall 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.

10. The seat recliner as claimed in any one of claims 2 to 9 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).

Images