Seat angle adjuster and slider

Abstract

The present invention discloses a slider for a seat angle adjuster, comprising a slider body (11) and a protrusion (12) arranged on one side of the slider body (11), wherein the slider body (11) is provided with a slider ratchet (11a) on an arc-shaped peripheral wall, wherein the slider ratchet (11a) is connected at a right angle to the side wall on the protrusion side of the slider body (11), and is connected to the rounded corner of the side wall on the opposite side of the protrusion; the peripheral walls (11b) on both sides of the arc-shaped peripheral wall are used to abut against the slide groove wall of a slide groove plate (2), wherein the peripheral walls (11b) are connected at a right angle to the side wall on the opposite side of the protrusion of the slider body (11), and are connected to the rounded corner of the side wall on the protrusion side. The present invention also provides a seat angle adjuster. The present invention improves the meshing strength between the ratchet and the slider, and the extrusion strength between the slider and the slide groove, thereby improving the stability and reliability of the seat back and the comfort of the passengers without changing the size of the slider and meeting the lightweight requirements.

Description

Technical Field

[0001] The invention relates to the technical field of seats, and in particular to a seat angle adjuster and a sliding block. Background Art

[0002] With the development trend of energy conservation and emission reduction in the automotive industry, automobiles need to continuously reduce the weight of components while ensuring safety performance. Car seats need to be lighter, and seat adjusters also need to be made lighter. This is the automotive industry's demand for lightweighting.

[0003] To ensure safety while reducing the weight of the seat recliner, parts need to be made smaller and thinner. This goal can also be achieved by selecting high-strength materials, but high-strength materials will increase material costs and manufacturing costs, resulting in increased costs of the recliner. Therefore, how to make full use of materials through more reasonable structural design and parts manufacturing processes to meet lightweight requirements while improving strength is an urgent problem that people in this field need to solve. Summary of the invention

[0004] The purpose of the present invention is to provide a slider which, without changing the size of the slider and meeting the lightweight requirement, selects conventional materials and achieves the purpose of reducing weight and improving strength through part structure design.

[0005] In order to solve the above technical problems, the present invention provides a slider for a seat adjuster, including a slider body and a protrusion arranged on the side wall of one side of the slider body, the arc-shaped peripheral wall of the slider body is provided with a slider ratchet for engaging with the ratchet teeth of the ratchet wheel, the slider ratchet is connected at a right angle to the side wall on the protrusion side of the slider body, and is connected with the rounded corner of the side wall on the opposite side of the protrusion; the peripheral walls on both sides of the arc-shaped peripheral wall are used to abut against the slide groove wall of the slide groove plate, the peripheral wall is connected at a right angle to the side wall on the opposite side of the protrusion of the slider body, and is connected with the rounded corner of the side wall on the protrusion side.

[0006] In the present invention, the slider ratchet is connected at a right angle to the side wall on the raised side of the slider body, and is connected to the rounded corner of the side wall on the opposite side of the slider body protrusion, that is, the rounded corner of the slider ratchet and the rounded corner of the ratchet wheel ratchet are on the same side. This arrangement increases the axial overlap between the slider ratchet and the ratchet wheel ratchet, and improves the meshing strength between the ratchet and the slider; at the same time, the peripheral walls on both sides of the slider are connected at a right angle to the side walls on the opposite side of the slider body protrusion, and are connected to the rounded corner of the side wall on the raised side of the slider body, that is, the rounded corner of the peripheral wall and the rounded corner of the slide groove wall are on the same side. This arrangement simultaneously increases the contact height between the peripheral walls on both sides of the slider and the slide groove, increases the extrusion area of ​​the slide groove side walls, improves the extrusion strength of the slide groove, prevents the slider from drifting, and improves the stability of the slider.

[0007] It can be seen that the present invention, without changing the size of the slider and meeting the lightweight requirements, improves the meshing strength between the ratchet and the slider, as well as the extrusion strength of the slide groove by changing the structural design of the slider, thereby improving the stability and reliability of the seat back and improving passenger comfort.

[0008] The present invention also provides a seat angle adjuster, comprising a slide plate fixedly connected to the seat basin, a ratchet fixedly connected to the seat back, a driving mechanism and the aforementioned slider, the slide plate being provided with a slide groove extending in the radial direction, the ratchet being relatively rotatably mounted on the slide plate, and a ratchet tooth is provided on the inner side of the peripheral wall, the slider being mounted inside the slide groove, the driving mechanism being capable of driving the slider to move outward along the extension direction of the slide groove so that the slider ratchet teeth engage with the ratchet teeth; or driving the slide groove to move inward so that the slider ratchet teeth disengage from the ratchet teeth.

[0009] The seat recliner of the present invention includes the aforementioned slider for the seat recliner, and thus has the same technical effects as the slider for the seat recliner, which will not be described in detail herein.

[0010] Optionally, the slide plate is provided with five slide grooves, the slide grooves are evenly distributed along the circumference, and the seat angle adjuster includes five sliders, and the sliders are arranged in the slide grooves in a one-to-one correspondence.

[0011] Optionally, the driving mechanism comprises a locking cam, an unlocking cam and a driving shaft connected in a circumferential limit direction, the outer edge of the locking cam is provided with a locking surface corresponding to the slider, the unlocking cam has a driving slide groove extending in the circumferential direction, and the protrusions are inserted into the driving slide groove in a one-to-one correspondence;

[0012] When the drive shaft rotates, the drive slot can drive the slider to move inward; when the drive shaft rotates in the opposite direction, the locking surface can push the slider to move outward.

[0013] Optionally, a square hole is provided in the middle of the locking cam and the unlocking cam, and the driving shaft has a square segment, and the square segment is inserted into the square hole to limit the circumferential direction.

[0014] Optionally, the driving mechanism further includes a return spring, and when the driving shaft rotates and the driving slot drives the slider to move inward, the return spring gradually accumulates energy.

[0015] Optionally, a notch is provided on the inner side wall of the slide slot plate, the inner ring of the reset spring is sleeved on the square segment to form a circumferential limit, and the outer end of the reset spring is inserted into the notch to form a circumferential limit.

[0016] Optionally, a mounting groove connected to the notch is provided in the middle of the inner side wall of the slide plate, the drive shaft can pass through the slide plate relatively rotatably, and the return spring is placed in the mounting groove.

[0017] Optionally, it further includes an annular coupling sleeve, which is sleeved on the outer ring of the slide plate, and one side wall is fixedly connected to the slide plate, and the other side wall has a gap with the side wall of the ratchet facing away from the slide plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A structural schematic diagram of a specific embodiment of the seat recliner provided by the present invention;

[0019] Figure 2 for Figure 1 A schematic diagram of the structure in which the slider of the seat recliner is installed on the slide plate;

[0020] Figure 3 for Figure 1 Schematic diagram of the structure of the ratchet in the seat recliner;

[0021] Figure 4 A schematic structural diagram of a specific embodiment of a slider provided by the present invention;

[0022] Figure 5 for Figure 4 A cross-sectional view of the slider when it is engaged with the ratchet;

[0023] Figure 6 for Figure 5 A partial enlarged view of the meshing position between the ratchet teeth of the middle slider and the ratchet teeth of the ratchet wheel;

[0024] Figure 7 for Figure 4 A cross-sectional view of the slider when it is inside the chute;

[0025] Figure 8 for Figure 7 A partial enlarged view of the joint between the peripheral wall of the middle slider and the wall of the slideway;

[0026] Fig. 9 for Figure 1 A schematic diagram of the structure of the driving mechanism in the seat recliner;

[0027] Fig.10 for Fig. 9 A schematic diagram of the structure from another angle;

[0028] Fig.11 It is a transmission schematic diagram during the seat locking process;

[0029] Fig.12 It is a structural schematic diagram of the seat in a locked state;

[0030] Fig.13 This is a transmission diagram during the seat unlocking process;

[0031] Fig.14 This is a schematic diagram of the structure when the seat is unlocked;

[0032] Fig.15 It is a schematic diagram of the installation of the return spring and the drive shaft in the drive mechanism;

[0033] Fig.16 It is a structural schematic diagram of the return spring installed on the slide plate;

[0034] Fig.17 It is a schematic diagram of the structure of the back side of the slide plate;

[0035] in, Figure 1-Figure 17 The reference numerals in the figures are described as follows:

[0036] 1-slider; 11-slider body; 11a-slider ratchet; 11b-peripheral wall; 12-protrusion;

[0037] 2-chute plate; 21-first boss; 2a-notch; o-chute;

[0038] 3-ratchet; 31-second boss;

[0039] 4-locking cam; 4a-locking surface;

[0040] 5-unlocking cam; 5a-driving slide;

[0041] 6- driving shaft;

[0042] 7-reset spring; 71-extension end;

[0043] 8-Combination set. DETAILED DESCRIPTION

[0044] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0045] Herein, the side of the slider body 11 where the protrusion 12 is provided is referred to as the protrusion side, and the side where the protrusion 12 is not provided is referred to as the protrusion reverse side.

[0046] Before introducing the structure of the slider 1 of the present invention in detail, the installation position and function of the slider 1 in the seat recliner are briefly introduced. Figure 1-Figure 3The slide plate 2 is fixedly connected to the seat basin connecting plate and is provided with a slide groove o extending in the radial direction. The slider 1 is installed in the slide groove o of the slide plate 2 and can move radially along the extension direction of the slide groove o. The arc-shaped circumferential wall of the slider 1 is provided with slider ratchet teeth 11a for cooperating with the ratchet teeth on the inner circumferential wall of the ratchet 3. The ratchet 3 is fixedly connected to the connecting plate of the seat back and can be relatively rotatably installed in the slide plate 2. Therefore, the slider 1 moves radially outward until the slider ratchet teeth 11a engage with the ratchet teeth of the ratchet wheel, and the ratchet 3 can no longer rotate relative to the slide plate 2, and the seat is locked; when the slider 1 moves radially inward and the slider ratchet teeth 11a disengage from the ratchet teeth of the ratchet wheel, the ratchet 3 and the seat back connecting plate can rotate freely to adjust the angle of the seat back and unlock the seat.

[0047] As can be seen from the above, the slider 1 needs to move along the extension direction of the slide slot o. Therefore, the contact height between the peripheral walls 11b on both sides of the slider and the slide slot wall directly affects the extrusion strength of the slide slot o. If the contact area between the peripheral walls 11b and the slide slot o is small, the extrusion strength of the slide slot o will be reduced. At the same time, the slider 1 will produce an upward component force when squeezing the slide slot o, causing the slider 1 to float upward, further reducing the contact height between the slider 1 and the slide slot o; and the axial overlap between the slider ratchet teeth 11a and the ratchet teeth of the ratchet wheel directly affects the meshing strength of the slider ratchet teeth 11a and the ratchet teeth of the ratchet wheel, and both directly affect the stability of the seat back. However, to improve the extrusion strength of the slide slot o and the meshing strength of the slider ratchet teeth 11a and the ratchet teeth of the ratchet wheel, there are usually two traditional ideas: increasing the size of the component or using high-strength materials, but the first approach is not conducive to lightweight requirements, and the second approach is costly.

[0048] Based on this, the present invention changes the traditional thinking mode of the prior art, selects conventional materials without changing the size of the slider 1 and meeting the lightweight requirements, and achieves the purpose of weight reduction and strength improvement through part structure design.

[0049] The slider 1 is usually formed by stamping. Due to the characteristics of the stamping process, rounded corners are inevitably produced. In the prior art, the slider ratchet teeth 11a and the two side peripheral walls 11b are simultaneously connected to the rounded corners of the protruding side walls, or simultaneously connected to the rounded corners of the side walls on the opposite side of the protrusion. However, in the first structure, the axial overlap between the slider ratchet teeth 11a and the ratchet teeth of the ratchet wheel is small, and the meshing strength is poor; in the second structure, the contact height between the two side peripheral walls 11b and the slide groove o is low, so the contact area is small and the slide groove extrusion strength is low.

[0050] The structure of the slider 1 of the present invention is described in detail below. Figure 4 , Figure 4 The figure is a schematic structural diagram of a specific embodiment of the slider provided by the present invention.

[0051] In the present invention, the slider ratchet 11a is connected at a right angle to the side wall of the slider body 11 on the protruding side, and is connected to the side wall of the slider body 11 on the opposite side of the protrusion with a rounded corner, such as Figure 5 , Figure 6 As shown, the fillet of the slider ratchet teeth 11a and the fillet of the ratchet wheel ratchet teeth are located on the same side. This arrangement increases the axial overlap L between the slider ratchet teeth 11a and the ratchet wheel ratchet teeth, and improves the meshing strength between the ratchet wheel 3 and the slider 1. At the same time, the peripheral walls 11b on both sides of the slider are connected at right angles to the side walls on the opposite side of the protrusion of the slider body 11, and are connected to the fillet of the side walls on the protrusion side of the slider body 11, as shown in FIG. Figure 7 , Figure 8 As shown, the rounded corners of the peripheral wall 11b and the rounded corners of the slide groove wall are located on the same side. This setting simultaneously increases the contact height H between the peripheral walls 11b on both sides of the slider and the slide groove o, increases the extrusion area of ​​the side walls of the slide groove o, improves the extrusion strength of the slide groove o, prevents the slider 1 from drifting, and improves the stability of the slider 1.

[0052] It can be seen that the present invention, without changing the size of the slider 1 and under the premise of meeting the lightweight requirement, improves the meshing strength between the ratchet 3 and the slider 1 and the extrusion strength of the slide groove o by changing the structural design of the slider 1, thereby improving the stability and reliability of the seat back and improving the passenger comfort.

[0053] In the present invention, the slider 1 is formed by stamping. Specifically, the structure of the slider 1 can be formed by stamping first, and then the slider ratchet teeth 11 a can be reversely stamped.

[0054] The present invention also provides a seat recliner, comprising a slide plate 2 fixedly connected to a seat pan, a ratchet 3 fixedly connected to a seat back, a driving mechanism and the aforementioned slider 1 for the seat recliner, the slide plate 2 being provided with a slide groove o extending radially, the ratchet 3 being relatively rotatably mounted on the slide plate 2, and a ratchet tooth is provided on the inner side of the peripheral wall, the slider 1 being mounted inside the slide groove o, the driving mechanism being able to drive the slider 1 to move outward along the slide groove o so that the slider ratchet teeth 11a engage with the ratchet teeth; or to move inward along the slide groove o so that the slider ratchet teeth 11a disengage from the ratchet teeth.

[0055] The seat recliner of the present invention includes the aforementioned slider 1 for the seat recliner, and thus has the same technical effects as the slider 1 for the seat recliner, which will not be described in detail herein.

[0056] Among them, Figure 1 As shown, the number of the slide slots o provided on the slide slot plate 2 is five, and the slide slots o are evenly distributed along the circumferential direction, and the seat recliner includes five sliders 1, and the sliders 1 are arranged in the slide slots o one by one. This arrangement can make full use of the internal space of the seat recliner, maximize the material strength, and achieve the best match between the ratchet meshing strength and the slide slot extrusion strength.

[0057] Please continue Figure 1 , Figure 9-14 The driving mechanism includes a locking cam 4 and an unlocking cam 5, which are fixed together by three limit pins, that is, the two can rotate synchronously, and the outer edge of the locking cam 4 is provided with a locking surface 4a corresponding to the slider 1, and the unlocking cam 5 has a special-shaped driving groove 5a extending along the circumferential direction, and the protrusions 12 of the slider 1 are inserted into the driving groove 5a one by one, as shown in FIG. Fig.11 As shown in FIG. 1 , when the locking cam 4 and the unlocking cam 5 rotate in the direction indicated by the arrow, the locking surface 4a on the outer edge of the locking cam 4 can push the slider 1 to move radially outward until the slider 1 is in the Fig.12 In the position shown, the slider ratchet teeth 11a are engaged with the ratchet teeth of the ratchet wheel; Fig.13 As shown in FIG. 1 , when the locking cam 4 and the unlocking cam 5 rotate in the direction indicated by the arrow, the driving slot 5a can drive the slider 1 to move radially inward until the slider 1 is in the Fig.14 In the position shown, the slider ratchet teeth 11a are disengaged from the ratchet teeth of the ratchet wheel.

[0058] The driving of the locking cam 4 and the unlocking cam 5 is realized by the transmission shaft 6. Specifically, a square hole is provided in the middle of the locking cam 4 and the unlocking cam 5, and the peripheral wall portion of the driving shaft 6 is square. The square section of the driving shaft 6 is inserted into the square holes of the locking cam 4 and the unlocking cam 5 to achieve circumferential limitation, that is, the rotation of the driving shaft 6 can drive the locking cam 4 and the unlocking cam 5 to rotate synchronously. Since the seat is usually provided with two seat recliners, the driving shaft 6 in this embodiment is also set in the form of a hollow shaft, and the interior is also square, for the connecting rod (not shown in the figure) to pass through and connect the two driving shafts 6 together. When the passenger drives the driving shaft 6 on one side to rotate through the unlocking handle (not shown in the figure), the driving shafts 6 on both sides can rotate synchronously to achieve the purpose of unlocking.

[0059] Of course, the circumferential limitation of the transmission shaft 6, the locking cam 4, and the unlocking cam 5 can also be achieved by welding the three together, which is not limited here.

[0060] like Figure 1 , Figure 15-16As shown, it also includes a return spring 7, the inner ring of the return spring 7 is pressed together with the square section of the drive shaft 6 to achieve circumferential limit, the inner side wall of the slide plate 2 is provided with a mounting groove and a notch 2a connected to the mounting groove, the middle of the mounting groove has a through hole for the drive shaft 6 to pass through, the return spring 7 is placed in the mounting groove of the slide plate 2, and its extension end 71 is inserted into the notch 2a of the slide plate 2 to achieve circumferential limit. With such a configuration, when the drive shaft 6 is forced to rotate in the unlocking direction, the return spring 7 will gradually accumulate energy. When the seat back is in the unlocked state and has been adjusted to the desired position, the force applied to the drive shaft 6 is canceled, and the drive shaft 6 will rotate in the opposite direction under the restoring force of the return spring 7 until the slider ratchet 11a and the ratchet wheel ratchet are engaged, and the seat is locked.

[0061] In actual application, the reset spring 7 may not be provided. In this case, the passenger needs to manually drive the drive shaft 6 to rotate to the locked position, and a locking structure is added to keep the drive shaft 6 in the locked position, which is complex in structure. The present invention provides a reset spring 7 so that the seat back can automatically return to the locked state, which is simple to operate and highly safe, and is a more preferred technical solution.

[0062] Please continue to refer to Figure 1 , and also includes an annular coupling sleeve 8, which is mounted on the outer edge of the slide plate 2, and one side of the coupling sleeve 8 is fixedly connected to the slide plate 2, and the other side has a gap with the side wall of the ratchet 3 facing away from the slide plate 2, so as to fix the ratchet 3 and the slide plate 2 together to prevent the ratchet 3 from detaching from the slide plate 2.

[0063] The gap mentioned here should ensure that the ratchet wheel 3 does not move axially and does not affect the rotation of the ratchet wheel 3.

[0064] In addition, if Fig.17 As shown, the slide plate 2 is provided with a first boss 21 on the back side of the slide slot o, and the seat basin connecting plate (not shown) is provided with a connecting hole at a corresponding position, and the first boss 21 is inserted into the connecting hole one by one, and the slide plate 2 and the seat basin connecting plate are welded and fixed together. Figure 3 As shown, a second boss 31 is provided on the side wall of the ratchet 3 facing away from the slide plate 2, and a connecting hole is provided at a corresponding position of the seat back connecting plate (not shown in the figure), and the second boss 31 is inserted into the connecting hole one by one, and the ratchet 3 is welded and fixed to the seat back connecting plate.

[0065] The above is a detailed introduction to a seat recliner and a slider provided by the present invention. The principle and implementation method of the present invention are described in detail using specific examples. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, the present invention can also be improved and modified without departing from the principle of the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A slider for a seat recliner, comprising a slider body (11), and a protrusion (12) arranged on a side wall of the slider body (11), wherein the arc-shaped peripheral wall of the slider body (11) is provided with slider ratchet teeth (11a) for meshing with ratchet teeth of a ratchet wheel, characterized in that: The slider ratchet (11a) is connected at a right angle to the side wall of the slider body (11) on the side opposite to the protrusion, and is connected at a rounded corner to the side wall on the opposite side to the protrusion; the peripheral walls (11b) on both sides of the arc-shaped peripheral wall are used to abut against the slide groove wall of the slide groove plate (2), and the peripheral walls (11b) are connected at a right angle to the side wall of the slider body (11) on the side opposite to the protrusion, and are connected at a rounded corner to the side wall on the protrusion side.

2. A seat recliner, characterized in that: It comprises a slide plate (2) fixedly connected to a seat pan, a ratchet (3) fixedly connected to a seat back, a driving mechanism and the slider (1) according to claim 1, wherein the inner wall of the slide plate (2) is provided with a slide groove (o) extending in a radial direction, the slider (1) is installed inside the slide groove (o), the ratchet (3) is relatively rotatably installed on the slide plate (2), and ratchet teeth are provided on the inner side of the peripheral wall; The driving mechanism is capable of driving the slider (1) to move outwards along the extension direction of the slide groove (o) so that the slider ratchet teeth (11a) mesh with the ratchet teeth of the ratchet wheel; or driving the slider (1) to move inwards so that the slider ratchet teeth (11a) disengage from the ratchet teeth of the ratchet wheel; The rounded corners of the slider ratchet teeth (11a) and the ratchet wheel ratchet teeth are located on the same side, and the rounded corners of the peripheral wall (11b) and the rounded corners of the sliding groove wall are located on the same side.

3. The seat recliner according to claim 2, characterized in that: The number of the slide grooves (o) arranged on the slide groove plate (2) is five, and the slide grooves (o) are evenly distributed along the circumference. The seat angle adjuster comprises five sliders (1), and the sliders (1) are arranged in the slide grooves (o) in a one-to-one correspondence.

4. The seat recliner according to claim 2, characterized in that: The driving mechanism comprises a locking cam (4), an unlocking cam (5) and a driving shaft (6) which are connected in a circumferential direction, the outer edge of the locking cam (4) being provided with a locking surface (4a) corresponding to the sliding block (1), the unlocking cam (5) having a driving sliding groove (5a) extending in the circumferential direction, and the protrusions (12) being inserted into the driving sliding grooves (5a) in a one-to-one correspondence; When the drive shaft (6) rotates, the drive slot (5a) can drive the slider (1) to move inward; when the drive shaft (6) rotates in the opposite direction, the locking surface (4a) can push the slider (1) to move outward.

5. The seat recliner according to claim 4, characterized in that: The locking cam (4) and the unlocking cam (5) are provided with square holes in the middle, and the driving shaft (6) has a square section, and the square section is inserted into the square hole to limit the circumferential position.

6. The seat recliner according to claim 5, characterized in that: The driving mechanism further includes a return spring (7). When the driving shaft (6) rotates and the driving slide groove (5a) drives the slider (1) to move inward, the return spring (7) gradually accumulates energy.

7. The seat recliner according to claim 6, characterized in that: The inner wall of the slide plate (2) is provided with a notch (2a), the inner ring of the return spring (7) is sleeved on the square segment to form a circumferential limit, and the extended end (71) of the return spring (7) is inserted into the notch (2a) to form a circumferential limit.

8. The seat recliner according to claim 7, characterized in that: A mounting groove communicating with the notch (2a) is provided in the middle of the inner side wall of the slide plate (2); the drive shaft (6) can relatively rotatably pass through the slide plate (2); and the return spring (7) is disposed in the mounting groove.

9. The seat recliner according to any one of claims 2 to 8, characterized in that: It also comprises an annular coupling sleeve (8), wherein the coupling sleeve (8) is sleeved on the outer ring of the slide plate (2), and one side wall is fixedly connected to the slide plate (2), and the other side wall has a gap with the side wall of the ratchet (3) facing away from the slide plate (2).

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