KR101352762B1 - Seat track - Google Patents

Abstract

The present invention relates to a seat track installed for the front-back position adjustment of a seat in a vehicle. The seat track includes: a fixed rail which has a channel structure and includes grooves on the left and the right inner surface; a transfer rail which slides while the left and the right vertical surface are facing the left and the right inner surface and has a penetration hole on the left and the right vertical surface; a locking member which includes a support body installed between the left and the right vertical surface of the transfer rail and facing the penetration hole, a plurality of rotational pins supported on the support body and moving between the locking position to be inserted to the groove of the fixed rail and the unlocking position to be released from the groove, a guide spring supported on the support body and pressurizing the rotational pins to move to the unlocking position, and an unlocking body sliding following the support body when pressurized by an external force and pressurizing the rotational pins to move from the unlocking position to the locking position; and a solenoid device which includes a plunger sliding while penetrating the transfer rail and combined to the unlocking body at one end and a coil mounted on the transfer rail and sliding the unlocking body by driving the plunger using the external force. By doing so, compared to the previous technology, the size can be reduced and the performance can be improved. It is also possible to control the automatic locking and unlocking of the locking member using the solenoid device.

Description

Seat Tracks {SEAT TRACK}

The present invention relates to a seat track mounted for front and rear position adjustment of a vehicle seat.

In order to meet the recent trend of miniaturization and light weight of the vehicle, while seeking compactness in the seat track, performance has been required to be equal to or better than that of the prior art.

Accordingly, the applicant has a means for locking between the upper rail and the lower rail as in Korean Patent Registration No. 10-0848004, "Sheet Transfer Track Device" (Registration Date: July 16, 2008) (hereinafter referred to as 'Korean Patent'). A so-called insert type seat track inserted into the upper rail has been proposed.

The Korean patent discloses a structure for locking between an upper rail and a lower rail through a plurality of protrusions formed on a rotating locking member.

On the other hand, unlike the Korean patent, regarding the mechanism of the protrusions of the locking member for locking independently operating US Patent No. 7,207,541 "LOCKING DEVICE WITH SEVERAL LOCKING PINS" (registration date: April 24, 2007) (hereinafter 'US patent' And the like).

The US patent discloses a structure in which a plurality of slide-operated locking pins are inserted into the lower rail through upper rails to lock between rails.

The present invention proposes an improved form of seat track that can simultaneously achieve miniaturization and performance improvement of a product by comprehensively examining the conventional seat track including the Korean patent and the US patent.

An object of the present invention is to provide a seat track of the improved form compared to the prior art to achieve a miniaturization and improved performance at the same time.

In order to achieve the above object, the present invention provides a seat track, comprising: a fixed rail having a channel structure and having grooves formed at regular intervals in a longitudinal direction on left and right inner surfaces formed vertically; A left and right vertical surface slides along the fixed rail in a state facing the left and right inner surfaces of the fixed rail, and the left and right vertical surfaces have a plurality of through holes having a predetermined interval in the longitudinal direction; A support body received and installed between the left and right vertical surfaces of the transfer rail to face the plurality of through holes, and a locking position supported by the support body and inserted into the groove portion of the fixed rail through the plurality of through holes, from the groove portion. A plurality of rotary pins to rotate between the unlocked position, the guide spring which is supported by the support body to rotate the plurality of rotation pins to the unlocked position, and along the support body when pressed by an external force A locking member having a sliding body which slides to press the plurality of rotation pins to rotate from the unlocking position to the locking position; And a plunger that is slidably mounted through the conveying rail and whose one end is coupled to the unlocking body, and which is mounted on the conveying rail to drive the plunger through the application of an external power source to slide the unlocking body. A seat track comprising a solenoid device having a coil for driving is provided.

Here, the seat track, the guide rack is formed with a plurality of rack holes (rack holes) at a predetermined interval along the longitudinal direction of the fixed rail, coupled to the rack holes of the guide rack is transported along the guide rack during rotational driving A slide having a pinion and a driving motor mounted to the conveying rail and coupled to the pinion on a drive shaft and driving the pinion in rotation with the solenoid device so that the conveying rail slides along the fixed rail. It may further include a drive device.

In this case, the guide rack may correspond to the bottom surface of the fixing rail.

In addition, the plurality of rotating pins are provided in a pair of left and right to be rotatably supported in the opposite direction to the support body, and are inserted into the left and right inner side groove portions of the fixed rail through respective through holes in the left and right inner surfaces of the transport rail. It may be arranged to be.

At this time, the plurality of rotation pins provided in the pair of left and right may be penetrated by a pair of left and right hinge shafts inserted into the support body in the longitudinal direction and may be rotatably supported.

On the other hand, the unlocking body is provided with a pair of left and right push arm parts corresponding to each of the plurality of rotary pins, the support body has a plurality of guide grooves for guiding slides of the plurality of push arm parts left and right each side It may be formed in.

In this case, the unlocking body has a plate portion that is received between the inner surface of the conveying rail and the upper portion of the support body, the plate portion is formed integrally with the plurality of push arm portion, is installed on the plate surface portion An input pin provided may protrude to the outside through the upper surface of the transfer rail.

In addition, the plurality of rotating pins are arranged left and right rotation pins alternately along the longitudinal direction of the support body, the support body is a partition wall receiving the pair of adjacent left and right rotary pins as a unit in the longitudinal direction A plurality may be formed.

The guide spring may include a band-shaped guide body extending along the side of the support body, and a plurality of spring arm parts extending from the guide body to press each of the plurality of rotating pins.

According to the seat track according to the present invention as described above, by achieving a miniaturization of the product through the locking member is inserted into the conveying rail, and by the locking between the conveying rail and the fixed rail in such a way that a plurality of rotating pins are rotated It is possible to achieve improved locking performance of the seat track through a locking method differentiated from the prior art.

In particular, the locking member can be locked and unlocked automatically through a solenoid device mounted on the conveying rail to facilitate the use of a seated person.

1 is a perspective view of an assembled state of a seat track according to an embodiment of the present invention,
Figure 2 is a side view of the seat track of Figure 1,
3 is an exploded perspective view of the seat track of FIG.
4 is an exploded perspective view showing in detail an exploded view of a locking member that is a component of an exploded perspective view of FIG.
5A and 5B are sectional views of the seat track of FIG. 2 taken along line AA, showing a locked state and an unlocked state, respectively;
6 is a conceptual view illustrating a state in which a locking member is locked to a fixed rail according to the fine transfer of a transport rail in the seat track of FIG. 1;
7 is a perspective view illustrating a part of a seat frame to which a modification of the seat track of FIG. 1 is applied;
8A and 8B are imaginary cross-sectional views of the seat track of FIG. 7 in the longitudinal direction, showing a locked state and an unlocked state, respectively;
9 is a perspective view illustrating a part of a seat frame to which another modification of the seat track of FIG. 1 is applied.

Seat track 100 according to an embodiment of the present invention, as shown in Figure 1 and 2, the fixed rail 110 having a channel structure fixed to the vehicle body side, and the seat through the fastening bolt 101 It is fixed to the side is disposed inside the fixed rail 110 includes a conveying rail 120 that slides back and forth along the fixed rail (110).

In addition, it includes a locking member 130 as shown in Figure 3 as a means for locking and unlocking the slide of the transport rail 120 relative to the fixed rail (110).

In FIG. 3, reference numeral 102 denotes a ball bearing and a bearing holder interposed therebetween when the fixed rail 110 and the transfer rail 120 are coupled to each other.

The fixed rail 110 has grooves 112 formed on the left and right inner surfaces 111 formed vertically, and are provided at regular intervals in the longitudinal direction. The groove portion 112 is formed at the same position on the left and right inner surface 111 to form a structure corresponding to each other.

The conveying rail 120 is coupled to the inside of the fixing rail 110 in a state in which the left and right vertical surfaces 121 face the left and right inner surfaces 111 of the fixed rail 110 and slide back and forth.

In the middle portion of the vertical surface 121 in the longitudinal direction, as shown in FIG. 3, a plurality of through holes 124 are formed at regular intervals in the longitudinal direction.

Through these through holes 124, the rotating pin 133 'of the locking member 130 to be described later may protrude and be inserted into the groove 112 of the fixing rail 110 side.

As shown in FIG. 4, the locking member 130 includes a plurality of rotating pins 133 rotatably supported by a support body 131 and a hinge shaft 132 inserted into the support body 131. ), A guide spring 134 for elastically pressing the rotary pins 133, and an unlocking body 135 for guiding the rotating pins 133 in a vertical direction by being guided vertically to the support body 131. Is provided.

The support body 131 is accommodated between the left and right vertical surfaces (121 of FIG. 3) of the transfer rail 120, the fastening hole 122 of the transfer rail 120 through the fastening holes 131a formed at both ends of the upper surface. The fastening is installed and fixed inside the transfer rail 120.

Each of the plurality of rotating pins 133 has a pinhole 133a formed at an end thereof so that the hinge shaft 132 is inserted therethrough, thereby allowing each of the rotating pins 133 to be freely rotated about the hinge shaft 132. It becomes a state.

On the other hand, in the seat track 100 according to an embodiment of the present invention, the plurality of rotary pins 133 are provided in pairs of eight left and right to be rotatably supported in opposite directions with respect to the support body 131. .

At this time, the left rotating pin 133 ′ and the right rotating pin 133 are alternately arranged alternately along the longitudinal direction of the support body 131. That is, the relationship in which the left rotating pin 133 'is located in front (left in FIG. 4) and the right rotating pin 133 is next maintained over the entire rotating pins 133 and 133'.

And, in the present embodiment, the support body 131 is formed with a plurality of partitions 131b in the longitudinal direction.

The left rotating pins 133 'and the right rotating pins 133 are accommodated in pairs in the eight spaces S formed on the inner side formed by the partition walls 131b.

According to the structure in which the left and right rotating pins 133 and 133 'are accommodated in pairs by interviewing, the minimum feeding interval, that is, the pitch of the holding of the transport rail 120 with respect to the fixed rail 110 is maintained, as will be described later. can contribute to a decrease in pitch.

The smaller the pitch, the seat (seat) that is integrally slide with the transfer rail 120 can be fixed as close as possible to the user desired position.

The guide spring 134 has a band-shaped guide body 134a extending along the side of the support body 131 and is inserted into and fixed to the slit 131a of the support body 131 through the guide body 131. The rotary pin 133 is elastically pressed upward through a plurality of spring arm portions 134b extending from 134a.

Accordingly, the rotary pin 133 is maintained in a state of being rotated by the spring arm portion 134b in the absence of external force.

As for the unlocking body 135, eight push arm parts 135b are formed in the left and right sides of the plate surface part 135a extended in the longitudinal direction of the support body 131, respectively, and are integral with each other.

At this time, the left and right push arm portion 135b protrudes in a zigzag shape to form a one-to-one correspondence with each of the rotary pins 133 and 133 'disposed below.

On the other hand, the unlocking body 135 slides up and down in a guided state in which the plurality of push arm portions 1335b are inserted into the guide grooves 131c formed on both left and right sides of the support body 131.

The input pin 135c is coupled to the plate surface 135a of the unlocking body 135 so as to protrude outward through the opening 123 of the transport rail 120 of FIG. 1.

Looking at the operation of the seat track 100 is configured as described above are as follows.

5A and 5B are cross-sectional views of the seat track 100 virtually cut along the AA line in FIG. 2, and in the case of FIG. 5A, the rotary pin 133 ′ is positioned at a locked position. The rotary pin 133 ′ is shown in the unlocked position.

First, referring to Figures 5a and 5b, the locking member 130 according to an embodiment of the present invention except for a part of the rotation pins (133, 133 ') constituting all of the components of the transfer rail 120 You can see that it is placed inside.

Referring to the locked state of FIG. 5A, the rotary pin 133 ′ which is not pressed down by the push arm portion 135 b of the unlocking body 135 is moved upward by the guide spring side spring arm portion 134 b. Elastically pressurized to maintain the rotated counterclockwise position, that is, the locked position.

As a result, the rotary pin 133 ′ protrudes through the through hole 124 of the transfer rail 120 and is inserted into the groove 112 of the fixed rail 110, so that the transfer rail 120 is fixed rail 110. Is locked to.

5B is an unlocked state, when the unlocking body 135 is lowered by the action of an external force through the input pin 135c, the rotary pin 133 'is rotated clockwise by pressing by the push arm portion 135b. Position, ie unlocked position.

Therefore, the rotary pin 133 ′ is separated from the groove 112 of the fixed rail 110 due to the rotation, and as a result, the transfer rail 120 is in an unlocked state with respect to the fixed rail 110.

On the other hand, the seat track 100 according to an embodiment of the present invention, as described above, a plurality of partitions 131b are formed on the support body (131 of FIG. 4), and a pair of left and right rotary pins are formed for each partition 131b. 133 and 133 'are accommodated.

According to the arrangement structure of the rotating pins 133 and 133 ', the left rotating pin 133' and the right rotating pin 133 present in the same partition 131b are arranged to be interviewed with each other. As shown in FIG. 2, both pins 133 ′ and 133 in the same partition wall interact with the grooves 112 of the fixing rail 110 side in a close relationship with each other in the left and right directions.

6 (a) shows that two rotary pins 133'-2 and 133'-4 on the left side are interviewed and locked to the front and rear surfaces of the groove 112, and the two rotary pins 133-2 and the right side are locked. 133-8 is interviewed and locked to the front and rear surfaces of the groove 112 to achieve locking of the transfer rail 120 with respect to the fixed rail 110.

In this state, when the conveying rail 120 is moved to the left, the rotating pins 133 and 133 'are also integrally conveyed to the left as shown in FIG. 6 (b). At this time, since all the left and right rotating pins 133 and 133 'are not interviewed in the front or rear of the groove 112, the locking pins are in an unlocked state.

And, as shown in Figure 6 (c) when the rotary pins 133, 133 'is further transferred to the left side until the two rotary pins (133'-1, 133'-7) of the left side before the groove portion 112 , And is interviewed on the rear surface and locked, and the two rotary pins 133-5 and 133-7 on the right side are interviewed and locked on the front and rear surfaces of the groove part 112 of the transfer rail 120 for the fixed rail 110. Locking is achieved.

On the other hand, if the rotary pins 133, 133 'are further moved to the left side as shown in FIG. 6 (d), all of the left and right rotation pins 133, 133' are not interviewed at the front and rear of the groove 112, and thus unloaded. If the rotary pins 133 and 133 'are further transferred to the left side as shown in FIG. 6 (e), the two rotating pins 133'-4 and 133'-6 on the left side are grooves 112. It is interviewed on the front and rear of the lock, and the two rotary pins (133-2, 133-4) of the right side is interviewed and locked on the front and rear of the groove 112, the transfer rail 120 for the fixed rail 110 Locking is achieved.

In summary, the seat track 100 according to the embodiment of the present invention has a minimum transfer interval, that is, the pitch of the rotation pins 133, in which the locking of the transfer rail 120 with respect to the fixed rail 110 is maintained. , 133 ') is equal to the distance traveled from (a) to (c) of FIG. 6 or (c) to (e).

This means that the user of the sheet can adjust the front and rear positions of the sheet in units of intervals from (a) to (c) or (c) to (e) of FIG. It means that the position can be adjusted by interval.

Furthermore, even though the rotating pins 133 and 133 'may be slightly moved back and forth even in the states of FIGS. 6B and 6D, at least one of the grooves 112 may be disposed between the rails 110 and 120. It can be seen that the locking is done. That is, according to the present invention, at least all the rotation pins 133 and 133 'are inserted into the groove 112, even if there is a gap between the rotation pins 133 and 133' inserted into the groove 112 and the groove 112. Since the phenomenon of not being inserted at all, that is, the presence of the unlocking section between the rails 110 and 120 may be prevented, the phenomenon in which the transport rail 120 is slid according to an external impact may be prevented.

FIG. 7 is a view illustrating a part of the seat frame 10 in which the seat track 100 is installed according to the embodiment of the present invention, and the cushion frame 11 of the seat frame 10 is a leg portion 11a. It is fixed to the conveyance rail 120 through.

At this time, the solenoid device 140 is mounted on the upper surface of the conveying rail (120).

As shown in FIG. 8A, the solenoid device 140 includes a frame 141 mounted on an upper surface of the transfer rail 120, a coil 142 wound around a cylinder and installed inside the frame 141, and A plunger 143 is inserted into the coil 142 and provided to be slidable up and down. Accordingly, when an external power source is applied to the coil 142, the plunger 143 in the inside thereof is driven to slide up and down.

The plunger 143 has a lower end portion 143a coupled to the locking member 130 side unlocking body 135 disposed through the conveying rail 120, so that the unlocking body 135 has the plunger. In accordance with the vertical slide driving of 143, the vertical slide is driven integrally.

Therefore, the user can control the locking and unlocking operation of the locking member 130 by controlling the external power through the solenoid device 140 as described above.

8A shows that the plunger 143 is raised and returned, and the locking member 130 is kept in a locked state. FIG. 8B is an unlocked body 135 of the locking member 130 side as the plunger 143 is lowered and slides. Unlocking operation for the fixed rail (110) is made due to the falling of the.

Meanwhile, in FIG. 7, the seat track 100 includes a guide rack 151 coupled to the fixed rail 110, and a driving motor 153 mounted to the transport rail 120 through the bracket 152. It further includes a slide driving device having a pinion 154 coupled to the drive shaft of the drive motor 153.

On the surface of the guide rack 151, a plurality of rack holes 151a are formed at regular intervals along the longitudinal direction of the fixed rail 110, and the pinion 154 is coupled to the rack holes 151a. When rotating, it slides back and forth along the rack hole 151a.

That is, when the drive motor 153 is driven by the application of an external power source, the pinion 154 is rotated and driven back and forth along the guide rack 151, so that the entire transport rail 120 is fixed rail. The slide back and forth along the 110 is adjusted.

In this case, the driving of the driving motor 153 is preferably set in a relation to the coil 142 of the solenoid device 140 described above.

That is, under the condition that the plunger 143 slides downward by the operation of the coil 142 on the solenoid device 140 side, the locking driving device 150 is unlocked with respect to the fixed rail 110 of the locking member 130. The side drive motor 153 can be driven until the rotational movement of the pinion 154 and thereby the slide motion of the fixed rail 110 of the transfer rail 120 are made.

On the other hand, the guide rack 151 is in the form of a 'b' shaped bracket as shown in Figure 7, the upper surface is mounted on the bottom of the fixed rail 110 and the plurality of rack holes (151a) formed on the side It may be provided in the form.

Alternatively, as shown in FIG. 9, the plurality of rack holes 110a may not be formed in a separate guide rack 151 of FIG. 7 but may be formed in the bottom surface of the fixing rail 110 itself. At this time, the fixed rail 110 is performed with the bottom surface guide function.

 Since the seat track 100 described above is only one embodiment to help understanding of the present invention, it is difficult to understand the scope of the present invention to the technical scope of the present invention.

The scope of the present invention is defined by the appended claims and their equivalents.

100: seat track 101: fastening bolt
102: ball bearing and holder 110: fixed rail
111: inner side 112: groove portion
120: feed rail 121: vertical plane
122: fastener 123: opening
124: through hole 130: locking member
131: support body 131a: slit
131b: bulkhead 131c: guide groove
132: hinge axis 133: rotary pin
133a: pinhole 134: guide spring
134a: guide body 134b: spring arm
135: unlocking body 135a: plate portion
135b: Push arm portion 135c: Input pin
140: solenoid device 141: frame
142: coil 143: plunger
150: slide drive 151: guide rack
151a: rack hole 152: bracket
153: drive motor 154: pinion

Claims (9)

In the seat track,
A fixed rail having a channel structure and having grooves formed at regular intervals in a longitudinal direction on left and right inner surfaces formed vertically;
A left and right vertical surface slides along the fixed rail in a state facing the left and right inner surfaces of the fixed rail, and the left and right vertical surfaces have a plurality of through holes having a predetermined interval in the longitudinal direction;
A support body received and installed between the left and right vertical surfaces of the transfer rail to face the plurality of through holes, and a locking position supported by the support body and inserted into the groove portion of the fixed rail through the plurality of through holes, from the groove portion. A plurality of rotary pins pivoting between the unlocked positions, a guide spring which is supported by the support body to press the plurality of rotary pins to rotate to the locking position, and slides along the support body when pressurized by an external force A locking member having an unlocking body configured to press the plurality of rotation pins to rotate from the locking position to the unlocking position;
A plunger is mounted to be slidably through the conveying rail and has one end coupled to the unlocking body, and is mounted to the conveying rail and slides the unlocking body by driving the plunger through application of an external power source. Solenoid device having a coil for making; And
A guide rack having a plurality of rack holes formed at predetermined intervals along a longitudinal direction of the fixed rail, a pinion coupled to the rack holes of the guide rack and being moved along the guide rack during rotation driving; And a slide driving device mounted on a conveying rail and having a driving motor coupled to the pinion on a driving shaft and rotating the pinion in cooperation with the solenoid device to allow the conveying rail to slide along the fixed rail. Seat track. delete The method of claim 1,
The guide rack is a seat track, characterized in that corresponding to the bottom surface of the fixed rail. The method of claim 1,
The plurality of rotating pins are provided in a pair of left and right to be rotatably supported in the opposite direction to the support body, and can be inserted into the left and right inner side groove portions of the fixed rail through respective through holes in the left and right inner surfaces of the transport rail. Seat tracks, characterized in that provided to. 5. The method of claim 4,
A plurality of rotating pins provided in the pair of left and right seat tracks, characterized in that the penetrating through the pair of left and right hinge shafts are inserted into the support body in the longitudinal direction so as to be rotatably supported. 5. The method of claim 4,
The unlocking body is provided with a pair of left and right push arm parts corresponding to each of the plurality of rotation pins,
The support body is a seat track, characterized in that a plurality of guide grooves for guiding the slide of the plurality of push arm portion is formed on each side. The method according to claim 6,
The unlocking body has a plate portion that is received between the inner surface of the transfer rail and the upper portion of the support body, the plate portion is formed integrally with the plurality of push arm portion, the input is provided on the plate portion The seat track, characterized in that the pin protrudes out through the upper surface of the conveying rail. 5. The method of claim 4,
The plurality of rotating pins are arranged left and right rotation pins alternately along the longitudinal direction of the support body,
The support body is a seat track, characterized in that a plurality of partition walls are formed in the longitudinal direction to accommodate a pair of left and right rotary pins adjacent to each other as a unit. The method of claim 1,
The guide spring is a seat track, characterized in that consisting of a band-shaped guide body portion extending along the side of the support body, and a plurality of spring arm portions extending from the guide body portion to press each of the plurality of rotation pins.

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