KR102414440B1 - Seatback locking device - Google Patents

Abstract

The present invention relates to a seatback locking device, and more particularly, to a seatback locking device for a vehicle capable of resolving rattle noise generated during driving by more stably realizing a fastening between a seatback and a striker of a vehicle body. A seatback locking device according to an embodiment of the present invention includes: a 4-fold link 100 coupled to the seatback frame 5 to be rotatable with respect to the seatback frame 5; The upper latch 200 and the lower latch 300 coupled with the 4-fold link 100 and configured to be rotatable upward and downward, respectively, by rotation of the 4-fold link 100; And it can be seated between the upper latch 200 and the lower latch 300, is configured to be constrained or released by rotation of the upper latch 00 and the lower latch 300, and is fixed to the vehicle body V The striker (9); includes.

Description

Seatback locking device {SEATBACK LOCKING DEVICE}

The present invention relates to a seatback locking device, and more particularly, to a seatback locking device capable of resolving rattle noise generated during driving by more stably realizing a fastening between a seatback and a striker of a vehicle body.

A seat mounted on a vehicle may be divided into a bucket seat and a bench seat. In general, the bucket seat is installed for each occupant in the driver's seat and the passenger seat in the front row of the vehicle, respectively. On the other hand, the bench seat is installed in the rear row of the vehicle, and the entire seat is composed of one so that two or more people can be seated.

The seat includes a seat cushion for supporting the buttocks of the occupant, a backrest for supporting the back, and a headrest for supporting the head. In particular, in the bench seat, the seat back constituting the backrest and the headrest is configured to be foldable with respect to the seat cushion, so that the interior space of the rear seat of the vehicle can be expanded.

1A-1B show a foldable seatback.

A lever 3 that can be pulled upward is installed on the upper portion of the seatback 1 . A latch 7 is provided on the seatback frame 5 forming the skeleton of the seatback 1 inside the seatback 1 . The latch 7 is engageable with the striker 9 mounted on the vehicle body V. As shown in FIG. The lever 7 is connected to the latch 7 and the cable 11 on the inside of the seatback 1, and by pulling the lever 7, the restraint of the latch 7 on the striker 9 can be released. . When the latch 7 is separated from the striker 9, the seat back 1 can be rotated in the direction of the arrow with respect to the pivot point R1, so that the seat back 1 can be folded with respect to a seat cushion (not shown).

The latch 7 is rotatably mounted with respect to the pivot point R2 in the seatback frame 5. When the cable 11 is pulled by the operation of the lever 7, the latch 7 is separated from the striker 9 and , the latch 7 releases the restraint of the striker 9 while rotating with respect to the pivot point R2.

As shown in FIG. 1C , the latch 7 is a multi-stage latch and includes one or more locking portions 13 and 15 so as to adjust the angle of the seatback 1 . The angle of the seatback 1 can be adjusted by allowing the striker 9 to be restrained by the first locking part 13 or the second locking part 15 . In FIG. 1b the striker 9 is constrained to the first locking part 13 .

In a foldable seatback having such a multi-stage latch, there is a problem in that a rattle noise occurs when the seatback is mounted on the striker and driven due to the generation of a latch coupling force difference according to the spread of welding of the multi-stage latch damper and the body striker.

Registered Patent Publication No. 10-1868109 (Registration Date: 2018.06.08)

The present invention has been devised to solve the above problems,

An object of the present invention is to provide a seatback locking device capable of resolving rattle noise that occurs when driving a vehicle after fastening the seatback and the striker.

The object of the present invention is not limited to the object mentioned above, and other objects not mentioned are clearly understood by those of ordinary skill in the art to which the present invention belongs from the description below (hereinafter 'person of ordinary skill') it could be

In order to achieve the object of the present invention as described above and perform the characteristic functions of the present invention to be described later, the features of the present invention are as follows.

A seatback locking device according to an embodiment of the present invention includes: a 4-fold link coupled to the seatback frame to be rotatable with respect to the seatback frame; an upper latch and a lower latch coupled to the four-fold link and configured to be rotatably upper and lower, respectively, by rotation of the four-fold link; and a striker that can be seated between the upper latch and the lower latch, is constrained or released by rotation of the upper latch and the lower latch, and is fixedly formed on the vehicle body.

According to the present invention, there is provided a seatback locking device capable of resolving rattle noise generated during vehicle driving after fastening the seatback and the striker.

Effects of the present invention are not limited to those described above, and other effects not mentioned will be clearly recognized by those skilled in the art from the following description.

1a shows a latch of a foldable seatback;
1b and 1c show enlarged views of a latch portion indicated by a dotted line in FIG. 1a,
2 is a seatback locking device according to an embodiment of the present invention, showing a state mounted on the seatback frame,
3 shows a seatback locking device according to an embodiment of the present invention;
4 shows a state in which a cable is connected to a lever according to an embodiment of the present invention;
5 is a view for explaining the operation of the seatback locking device according to the embodiment of the present invention.

The specific structural or functional descriptions presented in the embodiments of the present invention are only exemplified for the purpose of describing the embodiments according to the concept of the present invention, and the embodiments according to the concept of the present invention may be implemented in various forms. In addition, it should not be construed as being limited to the embodiments described herein, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

Meanwhile, in the present invention, terms such as first and/or second may be used to describe various components, but the components are not limited to the terms. The above terms are used only for the purpose of distinguishing one element from other elements, for example, within the scope of not departing from the scope of the rights according to the concept of the present invention, the first element may be named as the second element, Similarly, the second component may also be referred to as a first component.

When a component is referred to as being “connected” or “connected” to another component, it should be understood that the other component may be directly connected or connected to the other component, but other components may exist in between. something to do. On the other hand, when an element is referred to as being “directly connected” or “in direct contact with” another element, it should be understood that no other element is present in the middle. Other expressions for describing the relationship between elements, that is, expressions such as "between" and "immediately between" or "adjacent to" and "directly adjacent to", should be interpreted similarly.

Like reference numerals refer to like elements throughout. Meanwhile, the terminology used herein is for the purpose of describing the embodiments and is not intended to limit the present invention. In this specification, the singular form also includes the plural form unless otherwise specified in the phrase. As used herein, “comprises” and/or “comprising” means that the stated component, step, operation and/or element is the presence of one or more other components, steps, operations and/or elements. or addition is not excluded.

A seatback locking device according to the present invention is provided to improve rattle jointing occurring in a multi-stage latch having one or more locking portions to adjust the angle of a foldable seatback.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The seatback locking device according to the embodiment of the present invention includes a four-fold link 100 , an upper latch 200 , and a lower latch 300 .

2 and 3 , the seatback locking device according to the present invention is operatively mounted to the seatback frame 5 . According to an embodiment of the present invention, the seatback locking device may be operatively mounted to the seatback frame 5 by the fixing bracket 20 . The fixing bracket 20 may be coupled to the seat back frame 5 by a fastening member 30 such as a bolt.

The 4-fold link 100 is rotatably mounted with respect to the seat back frame (5). To this end, according to the embodiment of the present invention, the rod 40 is fixed to the seat back frame 5 . That is, the rod 40 is fixed to the seat back frame 5 so as not to rotate. The 4-fold link 100 is coupled to the rod 40 , and may be mounted to rotate around the rod 40 . According to some embodiments of the present invention, the rod 40 is fixed to the fixing bracket 20 , and the rod 40 fixed to the fixing bracket 20 can be rotatably coupled to the 4-section link 100 . .

Meanwhile, the 4-section link 100 includes a first bar 100a, a second bar 100b, a third bar 100c, and a fourth bar 100d. The first bar 100a to the fourth bar 100d form a quadrangle, and are configured to be rotatable with respect to each connection part in a state constrained to each other.

The first bar 100a and the second bar 100b are coupled to the rod 40 and configured to be rotatable with respect to the rod 40 . The second bar 100b and the third bar 100c, the third bar 100c and the fourth bar 100d, and the fourth bar 100d and the first bar 100a, respectively, are pin members 120a, 120b, 120c) so as to be rotatably connected to each other with respect to each of the pin members 120a, 120b, and 120c. That is, the second bar 100b and the third bar 100c are connected to each other by the pin member 120a and rotatably connected to the pin member 120a. The third bar 100c and the fourth bar 100d are rotatably connected to each other with respect to the pin member 120b. The fourth bar 100d and the first bar 100a are connected by a pin member 120c and are rotatably mounted with respect to the pin member 120c.

The upper latch 200 and the lower latch 300 are disposed on the seat back frame 5 or the fixing bracket 20 to partially overlap each other, and are arranged to operate in conjunction with the rotation of the 4-section link 100 . According to an embodiment of the present invention, the upper latch 200 is coupled to the first bar 100a. According to an embodiment of the present invention, the upper latch 200 may be welded to the first bar 100a. According to the embodiment of the present invention, the upper latch 200 is formed with a cutout 220 that is recessed inwardly. The cutout portion 220 is configured to insert the first bar 100a. By increasing the coupling area between the first bar 100a and the upper latch 200 , the first bar 100a and the upper latch 200 may be more firmly coupled.

The lower latch 300 is coupled to the second bar 100b. According to one embodiment of the present invention, the lower latch 300 may be welded to the second bar 100b. According to one embodiment of the present invention, the lower latch 300 is formed with a cutout that is recessed inwardly. The second bar 100b is configured to be inserted into the cutout portion. Although not shown in the drawings, the cut-out portion of the lower latch 300 is formed in the same manner as the cut-out portion 220 of the upper latch 200 . The cutout portion of the lower latch 300 also increases the coupling area between the second bar 100b and the lower latch 300 so that the second bar 100b and the lower latch 300 can be coupled more stably.

According to the embodiment of the present invention, the upper latch 200 may be formed in an approximately 'L' shape with respect to the seat back frame 5 . The portion of the upper latch 200 formed in the vertical direction in the shape of the letter 'a' includes two or more upper locking parts 240 cut in the vertical direction. The two or more upper locking parts 240 are formed to be spaced apart from each other by a predetermined interval.

According to the embodiment of the present invention, the lower latch 300 may be provided in a form of approximately 90° rotation of the 'L' character counterclockwise with respect to the seat back frame 5 . In this form, the portion of the lower latch 300 formed in the vertical direction includes two or more lower locking units 340 cut in the vertical direction. The lower locking parts 340 are disposed to be spaced apart from each other by a predetermined interval.

The upper locking part 240 and the lower locking part 340 are configured to overlap each other. The striker 9 is seated between the upper locking part 240 and the lower locking part 340 , more specifically, in a portion where the upper locking part 240 and the lower locking part 340 overlap.

One side of the cable 11 is coupled to the quadruple link 100 . According to some embodiments of the present invention, the cable 11 is coupled to the pin member 120b to which the third bar 100c and the fourth bar 100d are connected. According to some embodiments of the present invention, the cable 11 is coupled to the third bar 100c or the fourth bar 100d. The other side of the cable 11, as shown in Figure 4, is coupled to the lever 3 and pulls the lever 3, the cable 11 is configured to pull the 4-fold link 100.

An operation of the seatback locking device according to the present invention will be described with reference to FIG. 5 .

As indicated by the arrow of S1 in FIG. 5, when the cable 11 is pulled upward, the 4-section link 100 attached to the cable 11 or between the third bar 100c and the fourth bar 100d The pin member 120b rises along the arrow indicated by S2. When the pin member 120b rises, the periphery of the pin member 120a, 120c is compressed. That is, the pin member 120c between the first bar 100a and the fourth bar 100d descends, and the pin member 120a between the second bar 100b and the third bar 100c rises ( S3). As the first bar 100a descends, the upper latch 200 connected to the first bar 100a rotates upward, and the second bar 100b rises while the lower latch 300 connected to the second bar 100b. ) rotates downward (S4). Through this process, the upper latch 200 and the lower latch 300 are opened to release the restraint on the striker 9 .

The seatback locking device according to the present invention can improve rattle joint by increasing coupling force by applying a 4-fold link and a double coupling structure to the latch.

The present invention described above is not limited by the above-described embodiments and the accompanying drawings, and it is common in the technical field to which the present invention pertains that various substitutions, modifications and changes are possible within the scope without departing from the technical spirit of the present invention. It will be clear to those who have the knowledge of

1: Seatback 3: Lever
5: Seatback frame 7: Latch
9: Striker 11: Cable
13, 15: locking part 20: fixing bracket
30: fastening member 40: rod
100: Section 4 Link 100a: Bar 1
100b: second bar 100c: third bar
100d: fourth bar 120a, 120b, 120c: pin member
200: upper latch 220: cutout portion
240: upper locking unit 300: lower latch
340: lower locking part V: body
R1, R2: pivot point

Claims (12)

A four-bar link coupled to the seatback frame rotatably with respect to the seatback frame, wherein the four-bar link includes at least four bars, wherein the four bars are attached to each bar by rotation of any one bar among the four-bar links. configured to be rotatable with respect to a neighboring bar-;
an upper latch coupled to the first bar among the four-section links and configured to be rotatable together by rotation of the first bar;
a lower latch coupled to a second bar adjacent to the first bar among the four-section links and configured to be rotatable together by rotation of the second bar; and
a striker that can be seated between the upper latch and the lower latch, is constrained or released by rotation of the upper latch and the lower latch, and is fixedly formed on the vehicle body;
A seatback lock comprising a. The seatback locking device according to claim 1, wherein the 4-section link is coupled by a rod fixed to the seatback frame, and is configured to be rotatable with respect to the rod. The seatback locking device according to claim 1, further comprising a fixing bracket coupled to the seatback frame and including a rod to which the 4-section link is rotatably coupled. The seatback locking device according to claim 1, wherein the first bar and the second bar are rotatably connected to each other by a rod fixed to the seatback frame. The method according to claim 4, wherein the four-section link comprises the first bar, the second bar, the third bar and the fourth bar,
The second bar and the third bar are rotatably connected to each other by a first pin member,
The third bar and the fourth bar are rotatably connected to each other by a second pin member,
The seatback locking device in which the fourth bar and the first bar are rotatably connected to each other by a third pin member. delete The seatback lock of claim 1, wherein the upper latch and the lower latch are welded to the first bar and the second bar, respectively. The method according to claim 1, wherein each of the upper latch and the lower latch comprises a cutout formed recessed inward,
and the first bar is inserted into the cutout of the upper latch, and the second bar is inserted into the cutout of the lower latch. The seatback locking device according to claim 1, wherein the 4-section link is connected by a cable to a pullable lever formed in a seatback accommodating the seatback frame therein. The seatback locking device according to claim 5, wherein one side of the cable is connected to the second pin member, and the other side of the cable is connected to a pullable lever formed in a seatback accommodating the seatback frame therein. The method according to claim 1, wherein the upper latch includes at least two upper locking parts cut in an upward direction and spaced apart from each other, and wherein the lower latch includes two or more lower locking parts cut in a downward direction and spaced apart from each other. It includes a seatback lock. The seatback locking device according to claim 11, wherein the upper locking part and the lower locking part partially overlap each other in a state where the striker is seated between the upper latch and the lower latch.

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