KR101876464B1 - Locking assembly for double folding seat of vehicle - Google Patents

Abstract

A locking assembly for a vehicle double folding seat is provided. According to an aspect of the present invention, there is provided a latch device comprising: a latch portion mounted on a lower rail, the latch portion including a hook engaged with a striker and a first cam capable of restricting rotation of the hook in a release direction; A second cam capable of restraining rotation of the first cam in an unlocking direction; And a push bracket mounted on an upper rail which is engaged with a seat cushion and is capable of moving back and forth with respect to the lower rail, wherein when the push bracket is separated from the second cam in accordance with the front and rear positions of the seat cushion, Locking the rotation of the first cam in the unlocking direction, deactivating the double folding, and pushing the second cam in accordance with the forward and backward positions of the seat cushion, the second cam is rotated in the deactivation direction A locking assembly of a double folding seat for a vehicle, in which rotational restraint of the first cam is removed, and double folding is activated, may be provided.

Description

[0001] LOCKING ASSEMBLY FOR DOUBLE FOLDING SEAT OF VEHICLE [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a locking assembly for a vehicle double folding seat and, more particularly, to a locking structure for a double folding seat for a vehicle which is folded toward the seat cushion and the seat cushion is pivoted about the floor, To a locking assembly capable of locking or unlocking a folding (double folding) operation of a seat cushion.

The double folding seat is a kind of vehicle seat which can fold a seat cushion in addition to folding of a seat back, and is usually applied for increasing / lowering a seat on a rear seat or increasing the space utilization in the passenger compartment. Typically, a double folding seat is applied to a two-row seat in an RV vehicle to get in and out of a three-row seat, or to a rear seat connected to a rugby room to secure an in-car loading space in an SUV vehicle. Japanese Patent Application Laid-Open No. 10-1013905 and Japanese Patent Application Laid-Open No. 10-2015-0025923 disclose examples of such double folding sheets.

1 is a schematic view showing the operation of a conventional double folding sheet for a vehicle. Referring to FIG. 1, the double folding seat can be primarily folded toward the seat cushion C, and further, the seat cushion C is formed to enable the second folding operation of the seat cushion C. That is, the seat cushion C can be formed so as to be foldable with respect to the floor about the pivot axis at the front, and as the seat cushion C is folded forward, the seat is placed in an upright state, And an additional space for loading and unloading the cargo can be secured. On the other hand, in such a double folding seat, the folding operation of the seat cushion C, that is, the double folding can be locked or unlocked by the latch portion L disposed in the rear of the seat cushion C. That is, when the latch portion L is coupled to the striker provided on the floor, folding of the seat cushion C relative to the floor is restrained (locked), and conversely, when the latch portion L is disengaged or disengaged from the striker So that the seat cushion C can be folded (unlocked).

However, in the conventional double folding seat as described above, the folding of the seat cushion C is performed irrespective of the position of the seat back and forth, so that the headrest or the like may interfere with the floor or be contaminated or damaged during double folding. .

Registration No. 10-1013905 (registered on February 1, 2011) Open Patent Publication No. 10-2015-0025923 (published on March 11, 2015)

Embodiments of the present invention are intended to provide a locking assembly of a double folding seat for a vehicle which enables double folding only when the seat is disposed at a set position in forward and backward directions.

According to an aspect of the present invention, there is provided a latch device comprising: a latch portion mounted on a lower rail, the latch portion including a hook engaged with a striker and a first cam capable of restricting rotation of the hook in a release direction; A second cam capable of restraining rotation of the first cam in an unlocking direction; And a push bracket mounted on an upper rail which is engaged with a seat cushion and is capable of moving back and forth with respect to the lower rail, wherein when the push bracket is separated from the second cam in accordance with the front and rear positions of the seat cushion, Locking the rotation of the first cam in the unlocking direction, deactivating the double folding, and pushing the second cam in accordance with the forward and backward positions of the seat cushion, the second cam is rotated in the deactivation direction A locking assembly of a double folding seat for a vehicle, in which rotational restraint of the first cam is removed, and double folding is activated, may be provided.

The locking assembly of the vehicle double folding seat according to the embodiments of the present invention can activate or deactivate the double folding operation depending on the position of the seat cushion. That is, the double folding of the seat cushion becomes possible only when the seat cushion is moved to the setting position and the double bracketing is switched to the active state by the push bracket. Particularly, when the seat cushion is in the rearmost position, if the position of the push bracket is appropriately arranged so that the double folding is switched to the activated state, the seat cushion can be limited to double folding only at the rearward position. Therefore, the problem that the seat cushion is double-folded at the front position causes interference with the floor, contamination and damage are effectively solved.

1 is a schematic view showing the operation of a conventional double folding sheet for a vehicle.
2 is a perspective view showing a locking assembly of a vehicle double folding seat according to an embodiment of the present invention.
3 is a partial enlarged view of the locking assembly shown in FIG.
Figure 4 is a side view of the locking assembly shown in Figure 2;
Figure 5 is a first operative view of the locking assembly shown in Figure 4;
Figure 6 is a second operative view of the locking assembly shown in Figure 4;

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. It is to be understood, however, that the following examples are provided to facilitate understanding of the present invention, and the scope of the present invention is not limited to the following examples. In addition, the following embodiments are provided to explain the present invention more fully to those skilled in the art. Those skilled in the art will appreciate that those skilled in the art, Will be omitted.

2 is a perspective view showing a locking assembly A of a double folding seat for a vehicle according to an embodiment of the present invention.

For convenience, FIG. 2 selectively shows only a part of the overall configuration of the double folding sheet related to the present embodiment. The left side in Fig. 2 is directed toward the front side of the seat, and the right side is shown toward the rear side of the seat. This is also the same in Figs. 3 to 6 below. Meanwhile, in the present embodiment, the double folding sheet itself including the seat back, the seat cushion, and the like can be formed in the same or similar to the known double folding sheet, and is different from the technical point of the present embodiment, The description thereof will be omitted, and a description will be given below focusing on some configurations related to the present embodiment.

Referring to FIG. 2, a locking assembly (hereinafter abbreviated as 'locking assembly A') of a vehicle double folding seat according to the present embodiment may include a latch portion 1. The latch portion 1 may be disposed on the rear side of the seat cushion, and may have a pair of left and right sides. The left and right latch portions 1 may be formed to be the same or similar to each other.

The seat cushion can be installed to be slidable in the front-rear direction through the upper rail 2a and the lower rail 2b. The lower rail 2b is installed on the floor of the vehicle so that the forward and rearward movement can be locked and fixed. The upper rail 2a is seated on the lower rail 2b and can be slid back and forth along the lower rail 2b. The seat cushion can be mounted on the upper rail 2a and can be slid back and forth together with the upper rail 2a. The pair of upper rails 2a and lower rails 2b may be provided on the left and right sides of the seat cushion. The upper rail 2a and the lower rail 2b are similar to conventionally known vehicle seats.

On the other hand, the seat cushion can be folded in a standing state with the front hinge 3 as a pivot axis. That is, the lower rail 2b can be installed so as to be rotatable with respect to the floor through the front hinge 3, and the seat cushion can be rotated about the hinge 3 together with the upper rail 2a and the lower rail 2b As it is rotated, the folding (i.e., double folding) operation of the seat cushion against the floor can be implemented.

In the double folding as described above, the latch portion 1 locks or unlocks the double folding by engaging or disengaging the striker 4. Specifically, the latch portion 1 is engaged with the striker 4 to restrain the double folding of the seat cushion. In the present specification, the state in which the double folding is restricted is referred to as the " locking " state. For reference, in the case of Fig. 2, the arrangement state of each component is shown based on this locking state. Further, the latch portion 1 can be disengaged from the striker 4. Alternatively, the latch portion 1 can be switched from the striker 4 to a disengageable state in the above-described locked state. In such a case, the seat cushion can be doubly folded about the front hinge 3 as an axis. In this specification, a state in which double folding is possible will be referred to as an " unlocking " state.

Hereinafter, the configuration of the latch unit 1 will be described in more detail with reference to the drawings.

3 is a partial enlarged view of the locking assembly A shown in Fig. Figure 4 is a side view of the locking assembly A shown in Figure 2; It is noted that in the case of Figs. 3 and 4, the cover is removed from the latch portion 1 shown in Fig.

Referring to FIGS. 3 and 4, the latch portion 1 may include a base 11. The base 11 is formed in a plate shape having a predetermined width to provide a space in which hooks 12, first and second cams 13 and 15 and the like to be described later can be mounted and arranged. The base 11 can be mounted and fixed to the rear of the lower rail 2b.

The latch portion (1) may include a hook (12). The hook 12 may be mounted on the base 11 so as to be rotatable about the first axis 121. The hook 12 can be rotated about the first axis 121 in the engagement direction or the release direction. The direction of engagement may refer to the counterclockwise direction as shown in Figs. 3 and 4, in the direction in which the hook 12 is engaged with the striker 4. Fig. The releasing direction may refer to a clockwise direction as shown in Figs. 3 and 4, in the direction in which the hook 12 is disengaged from the striker 4. Fig. 3 and 4 show a state in which the hook 12 is engaged with the striker 4. In this state, the hook 12 is rotated in the release direction (clockwise direction) Can be disassociated.

In addition, the hook 12 may have a latching groove 122 in which the striker 4 is engaged. The striker 4 can be engaged with the latching groove 122 by approaching the hook 12 through the access path of the base 11. [

The hook 12 may also have a first contact end 123. The first contact end 123 contacts with the first cam 13 to be described later and rotates and restrains the hook 12. In relation to this, the first cam 13 is referred to as an additional key.

The latch portion 1 may include a first cam 13. The first cam 13 may be rotatably mounted on the base 11 about the second axis 131. The second shaft 131 may be spaced apart from the first shaft 121 by a predetermined distance. However, if necessary, the second shaft 131 may be shared with the first shaft 121.

The first cam 13 is for restricting the rotation of the hook 12 and may have a second contact end 132. [ The second contact end 132 is brought into contact with the first contact end 123 to restrain the rotation of the hook 12. That is, the first cam 13 is held in contact with the first contact end 123 by the second contact end 132, thereby restricting the rotation of the hook 12 in the release direction.

Also, the first cam 13 can be rotated about the second axis 131 in the locking direction or the un-locking direction. The locking direction may refer to a counterclockwise direction as shown in Figs. 3 and 4, in a direction in which the first cam 13 contacts the hook 12 and restrains the rotation of the hook 12. The unlocking direction can refer to the clockwise direction as shown in FIGS. 3 and 4 in the direction in which the first cam 13 is disengaged from or spaced from the hook 12 and the rotational restraint of the hook 12 disappears have. 3 and 4 illustrate a state in which the second contact end 132 is in contact with the first contact end 123 and rotation of the hook 12 in the release direction (clockwise direction) is restrained. In this state, when the first cam 13 is rotated in the unlocking direction (clockwise direction), the rotational constraint of the hook 12 disappears.

The first cam 13 can restrain the rotation of the hook 12 in the release direction and maintain the engagement between the hook 12 and the striker 4. [ In such a case, the seat cushion maintains a locking state in which double folding is impossible. Also, the first cam 13 can be rotated in the unlocking direction to remove rotational constraint of the hook 12. In this case, the hook 12 is rotated in the unlocking direction to be disengageable from the striker 4, and as a result, the seat cushion is switched to the unlocked state in which double folding of the seat cushion is possible.

The rotation of the first cam 13 in the unlocking direction can be achieved by an external operating force. That is, the cable 133 to which the external operating force is applied may be connected to the first cam 13. The first cam 13 can be rotated in the unlocking direction (clockwise direction) as the cable 133 is pulled in the locked state as shown in Figs. In such a case, the return in the opposite direction (counterclockwise) may be performed by the first elastic member 14, which will be described later. If necessary, the first cam 13 may be provided with a cable connecting piece 133a for connecting the cable 133 thereto.

Also, the first cam 13 may have a third contact end 134. The third contact end 134 may be spaced apart from the second contact end 132 described above. The second contact end 132 may be provided on one surface of the first cam 13 disposed toward the hook 12 and the third contact end 134 may be disposed on the second axis 131 And can be disposed toward the second cam 5, which will be described later, disposed on substantially the opposite side of the second contact end 132. [ The third contact end 134 is made to be an additional one with respect to the second cam 5 to be described later.

The latch portion 1 may further include a first elastic member 14. The first elastic member 14 can exert an elastic force between the hook 12 and the first cam 13. [ Preferably, the first elastic member 14 may include a tension spring 14, which will be described below.

One end of the tension spring 14 can be fastened to the hook 12 and the other end can be fastened to the first cam 13. [ 3 and 4, one end of the tension spring 14 is fastened to the spring coupling groove 124 provided on the hook 12 and the other end is fastened to the first cam 13 through the cable connecting piece 133a It is concluded.

The tension spring 14 can exert an elastic force (tensile force) between the hook 12 and the first cam 13 to maintain the contact state between the first cam 13 and the hook 12. [ 3 and 4, the tension spring 14 applies an elastic force to the first cam 13 in the locking direction (counterclockwise direction) so that the first and second contact stages 123 and 132 The contacted state can be maintained. Further, the tension spring 14 can provide the restoring force to the first cam 13 when the first cam 13 rotates in the unlocking direction. That is, when the first cam 13 is rotated in the unlocking direction (clockwise direction) by the external operating force in the locked state as shown in Figs. 3 and 4, the tension spring 14 is urged to the first cam 13 Thereby providing a restoring force in the locking direction (counterclockwise direction). Further, the tension spring 14 can link the first cam 13 and the hook 12 together. That is, when the first cam 13 is rotated in the unlocking direction (clockwise direction) by the cable 133, the tension spring 14 pulls the hook 12 so that the hook 12 is released in the release direction As shown in FIG. Thereby, it is possible to switch from the locked state to the un-locked state.

On the other hand, the locking assembly A according to the present embodiment may include the second cam 5. The second cam 5 may be mounted on the base 11 so as to be rotatable about the third axis 51. The third axis 51 may be spaced apart from the second axis 131 by a predetermined distance. Preferably, the first to third axes 121, 131, 51 may be sequentially spaced along the front-rear direction. However, two or more axes of the first to third axes 121, 131, and 51 may be shared as necessary.

The second cam 5 is for restricting the rotation of the first cam 13 in the unlocking direction and may include a fourth contact end 52 which contacts the first cam 13. The fourth contact end 52 may be in contact with the third contact end 134 of the first cam 13 or may be spaced apart from the third contact end 134 depending on the rotational position of the second cam 5 have.

In other words, the fourth contact end 52 is in contact with the third contact end 134 and can restrain the rotation of the first cam 13 in the unlocking direction. Herein, the state in which the rotation of the first cam 13 in the unlocking direction is restricted will be referred to as " inactivated state " The fourth contact end 52 may be spaced apart from the third contact end 134 in accordance with the rotational position of the second cam 5 about the third axis 51. In this case, the rotation of the first cam 13 in the unlocking direction is not limited. In this specification, the state in which the fourth contact end 52 is separated from the third contact end 134 and the rotation of the first cam 13 in the unlocking direction is referred to as a state in which double folding is 'activated' do. 3 and 4, it is noted that the fourth contact end 52 shows a double folding activation state in which it is disposed apart from the third contact end 134. [

The second cam 5 can be rotated about the third axis 51 in the activation direction or the inactivation direction. The activation direction may refer to a clockwise direction, as shown in Figs. 3 and 4, in the direction in which the fourth contact end 52 is in contact with the third contact end 134. [ The above deactivation direction may refer to the counterclockwise direction as shown in Figs. 3 and 4, in the direction in which the fourth contact end 52 is disengaged from the third contact end 134. Fig. 3 and 4 show a state in which the double folding is activated. When the second cam 5 is rotated in the deactivation direction (counterclockwise direction) by a predetermined angle, It is possible to switch to the double folding inactivation state by being in contact with the step 134. [

Further, the second cam 5 may be provided with the first push surface 53. The first push surface 53 may be formed on one surface of the second cam 5 facing the push bracket 7, which will be described later. With respect to the first push surface 53, the push bracket 7 will be referred to as an additional button.

Meanwhile, the locking assembly A according to the present embodiment may include the second elastic member 6. The second elastic member 6 can provide the elastic force or the restoring force of the second cam 5 in the inactivation direction. Alternatively, the second elastic member 6 may exert an elastic force on the second cam 5 in a direction in which the fourth contact end 52 is in contact with the third contact end 134. Alternatively, the second elastic member 6 may be maintained in a state in which the fourth contact end 52 is in contact with the third contact end 134 in an initial state in which no additional external force is applied to the second cam 5 The second cam 5 can exert an elastic force in the inactivation direction. 3 and 4 show the deactivation state in which the fourth contact stage 52 is disengaged from the third contact stage 134 and the elastic force of the second elastic member 6 is applied to the push bracket 7). As shown in Fig.

Preferably, the second elastic member 6 may be composed of a torsion spring 6 which is fastened to the third shaft 51 and applies an elastic force to the second cam 5, and will be described below. However, it is needless to say that the second elastic member 6 can be realized by various kinds of elastic means such as a tensile force, a compression spring and the like.

Meanwhile, the locking assembly A according to the present embodiment may include a push bracket 7. The push bracket 7 can be fixed to the upper rail 2a. Described latch portion 1 is fixed to the lower rail 2b through the base 11 while the main push bracket 7 can be fixed to the upper rail 2a. Therefore, the push bracket 7 can be moved back and forth together with the upper rail 2a as the upper rail 2a is moved back and forth. That is, the push bracket 7 can be moved back and forth together with the upper rail 2a as the seat cushion is moved back and forth, and thus the front bracket 7 can be moved back and forth with respect to the lower rail 2b and the latch portion 1, .

The push bracket 7 may have a second push surface 71. The second push surface 71 can be moved by pushing the first push surface 53 of the second cam 5 according to the position of the push bracket 7 to rotate the second cam 5, 53). That is, the second push surface 71 can push the first push surface 53 to rotate the second cam 5 in the activation direction by a predetermined degree in the initial state. 3 and 4, the second push surface 71 pushes the first push surface 53 and thus the second cam 5 is rotated by a predetermined angle. Further, the second push surface 71 can be disengaged from the first push surface 53 as the push bracket 7 is moved. That is, when the push bracket 7 is moved forward (leftward) in the state shown in Figs. 3 and 4, the second push surface 71 is detached from the first push surface 53. Fig.

The back and forth movement of the push bracket 7 can be made in accordance with the back and forth movement of the upper rail 2a and the seat cushion coupled thereto. Therefore, by appropriately adjusting the position of the push bracket 7 on the upper rail 2a, the double folding activation / deactivation can be switched according to the position of the seat cushion in the longitudinal direction. That is, the push bracket 7 can be mounted at a predetermined position in the longitudinal direction of the upper rail 2a, and the position of the push bracket 7 corresponds to the position of the seat cushion in which the double folding is activated / deactivated . The push bracket 7 can be arranged such that the second push surface 71 pushes the first push surface 53 to rotate the second cam 5 when the seat cushion is in the rearmost position have. In such a case, the second cam 5 can be rotated only when the seat cushion is disposed in the last room, and the double folding can be switched to the active state. This will be further described in connection with the operation of the present embodiment described below.

5 is a first operational view of the locking assembly A shown in Fig. 5 shows a state in which the latch portion 1 is coupled to the striker 4 and double folding is locked. 5 shows a state in which the push bracket 7 is separated from the second cam 5 and double folding is inactivated. This corresponds to a state in which the seat cushion is not moved to the setting position, that is, the rear end room.

In the state as shown in Fig. 5, the push bracket 7 is spaced from the second cam 5. Fig. The second cam 5 is subjected to the elastic force in the inactive direction (counterclockwise direction) by the torsion spring 6. Therefore, the fourth contact end 52 of the second cam 5 remains in contact with the third contact end 134 of the first cam 13.

In this state, when the cable 133 pulls the first cam 13 in the unlocking direction (clockwise direction), the first cam 13 is engaged with the third and fourth contact stages 134 and 52 , It can not be rotated in the unlocking direction (clockwise direction). That is, the rotation of the first cam 13 in the unlocking direction (clockwise direction) is restricted by the second cam 5. Therefore, even if the cable 133 pulls the first cam 13, it is not switched to the unlocked state, and the latch portion 1 is not released from the striker 4, so that double folding becomes impossible. That is, in the case of FIG. 5, double folding is in a deactivated state.

Figure 6 is a second operative view of the locking assembly A shown in Figure 4; 6 shows a state in which the latch portion 1 is engaged with the striker 4 and the double folding is locked and the push bracket 7 pushes the second cam 5 to activate double folding.

5, when the seat cushion is moved rearward, the upper rail 2a and the push bracket 7 provided thereon are moved rearward (leftward) toward the latch portion 1. In this state, As the push bracket 7 approaches the latch portion 1 the second push surface 71 of the push bracket 7 pushes the first push surface 53 of the second cam 5 to the second cam 5) in the activation direction (clockwise direction) by a predetermined degree. The fourth contact end 52 of the second cam 5 is released from the third contact end 134 of the first cam 13 when the second cam 5 is rotated. Therefore, the rotational restraint of the first cam 13 by the second cam 5 disappears, and the first cam 13 becomes rotatable in the unlocking direction (clockwise direction). In other words, the cable 133 is switched to the activated state in which it is possible to switch to the unlocked state.

6, when the cable 133 pulls the first cam 13, the first cam 13 is rotated in the unlocking direction (clockwise direction) and the second cam 13 is rotated in the unlocking direction The contact end 132 is disengaged from the first contact end 123 of the hook 12. Therefore, the hook 12 becomes rotatable in the release direction (clockwise direction). As the first cam 13 is rotated in the unlocking direction (clockwise direction), the tension spring 14 pulls the hook 12 and the hook 12 is rotated about the first axis 121 It is rotated in the release direction (clockwise direction). Thus, engagement between the hook 12 and the striker 4 can be released. In other words, the cable 133 can be switched from the locked state to the unlocked state by pulling the cable 133, and the seat cushion can be rotated about the hinge 3 at the front and double folded in the standing state.

As described above, in the locking assembly A according to the present embodiment, the double folding operation can be activated or deactivated depending on the position of the seat cushion. That is, the double folding of the seat cushion is enabled only when the seat cushion is moved to the setting position and the double folding is switched to the active state by the push bracket 7. Particularly, when the seat cushion is in the rearmost position and the position of the push bracket 7 is appropriately arranged so that the double folding is switched to the activated state, the seat cushion can be limited to double folding only at the rearward position. Therefore, the problem that the seat cushion is double-folded at the front position causes interference with the floor, contamination and damage are effectively solved.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, many modifications and changes may be made by those skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims. The present invention can be variously modified and changed by those skilled in the art, and it is also within the scope of the present invention.

A: Locking assembly 1: Latch portion
11: Base 12: Hook
13: first cam 14: first elastic member
5: second cam 6: push bracket

Claims (5)

The latch unit 1 is mounted on the lower rail 2b and includes a hook 12 to be engaged with the striker 4 and a first cam 13 capable of restricting rotation of the hook 12 in the release direction. ;
A second cam (5) capable of restraining rotation of the first cam (13) in the unlocking direction;
A push bracket 7 fastened to the seat cushion and mounted on the upper rail 2a movable back and forth with respect to the lower rail 2b; And
And a tension spring (14) having one end fastened to the hook (12) and the other end fastened to the first cam (13) to provide an elastic force in the locking direction to the first cam (13)
When the push bracket 7 is separated from the second cam 5 in accordance with the forward and backward positions of the seat cushion, the second cam 5 restricts rotation of the first cam 13 in the unlocking direction , Double folding is disabled,
When the push bracket 7 pushes the second cam 5 in accordance with the front and rear positions of the seat cushion, the second cam 5 is rotated in the inactive direction so that rotational constraint of the first cam 13 is eliminated And wherein the double folding is configured to be activated. delete The method according to claim 1,
A second elastic member that provides an elastic force to the second cam 5 in an inactive direction and maintains the second cam 5 in contact with the first cam 13 in a state in which double folding is inactivated, (6). ≪ / RTI > The method according to claim 1,
The push bracket (7) is positioned on the upper rail (2a) so as to rotate the second cam (5) in the inactivation direction corresponding to the rearmost position of the seat cushion assembly. The method according to claim 1,
The hook 12 has a first contact end 123,
The first cam 13 has a second contact end 132 and a third contact end 134 which are in contact with the first contact end 123,
The second cam 5 has a fourth contact end 52 to be contacted with the third contact end 134 and a first push surface 53,
The pushing bracket (7) has a second push surface (71) for pressing the first push surface (53) to rotate the second cam (5).

Images