JP2013095272A - Vehicle seat with flip-up seat locking mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle seat with a flip-up seat locking mechanism configured to lock a seat cushion in a tip-up state where the seat cushion is flipped up toward the seat back by simple operation from the outside of a cabin.SOLUTION: A pin member having a retaining flange portion is inserted into a hinge bracket that rotatably supports the seat cushion on the side thereof so as to move in a shaft direction. In a cushion frame of the seat cushion, an engagement hole into which the pin member is inserted is provided at the position facing a tip of the pin member when the seat cushion is in the tip-up state. Alternatively, the engagement hole is provided at the position facing the tip of the pin member of the hinge bracket when the pin member is inserted in the cushion frame. When the pin member is inserted in the engagement hole while the seat cushion is flipped up, a flange portion of the pin member is engaged with an edge of the engagement hole by the weight of the seat cushion, and the seat cushion is locked in the tip-up state.

Description

  The present invention relates to a vehicle seat with a flip-up seat lock mechanism, and more particularly to a vehicle seat having a flip-up seat lock mechanism for holding a seat cushion in a state of being flipped up to a seat back side.

  2. Description of the Related Art Conventionally, a general vehicle seat, particularly a rear seat, includes a flip-up seat that allows a seat cushion to be flipped up and held in order to form a wide space in a vehicle interior. In particular, in order to maintain a so-called tip-up state in which the seat cushion is flipped up to the seat back side, generally, as disclosed in Patent Document 1, a band member provided on either the seat cushion or the seat back The structure which latches to the other is employ | adopted. For example, as shown in FIG. 6, the band member 130 is attached to the front end portion of the bottom surface of the seat cushion 120, and the band member 130 is hooked and fixed to a bracket 140 fixed to the body behind the seat back 110. As a result, the seat cushion 120 is held in the tip-up state. The bracket may be provided on the seat back.

JP 2006-15787 A

  According to the configuration in which the seat cushion is fixed to the seat back using the band member as described above and the tip-up state is maintained, the band member is provided in the center portion in the width direction of the seat cushion or the seat back, and correspondingly Since the bracket is also provided at the position where the seat is placed, the band member and / or the bracket may become an obstacle to the seated person when the seat is in the seated state. Further, when the seat is held in the tip-up state, it is necessary to perform an operation of fixing the band tip on the seat back or the seat cushion. In addition, since the band member and the bracket are provided at the center in the width direction of the passenger compartment, it is necessary to get into the passenger compartment in order to perform this operation, and the operability is poor for the operator.

  The problem to be solved by the present invention is that the seat cushion, the seat back and the body are not provided with a band member or a bracket in order to hold the seat cushion in the tip-up state, and the tip-up state is achieved by a simple operation from outside the vehicle compartment. Is to provide a vehicle seat with a flip-up seat lock mechanism.

  In order to solve the above-described problems, the seat for a vehicle with the flip-up seat lock mechanism according to the present invention is such that the seat cushion can turn on the side surface in the front-rear direction of the vehicle on the hinge bracket fixed to the vehicle floor. In the connected vehicle seat, a pin member having a flange portion for preventing a slippage in an insertion hole provided in one of the hinge bracket and the seat cushion at a tip on the side where the seat cushion side face and the hinge bracket face each other. Is inserted so as to be able to advance and retreat in the axial direction, and the seat cushion and the hinge bracket are not provided with an insertion hole through which the pin member is inserted, and the seat cushion is flipped up to the seat back side. An engagement hole having a diameter larger than the diameter of the flange portion is provided at a position facing the tip of the pin member. In a state where the seat cushion is flipped up, the pin member is inserted into the engagement hole, and the flange portion is engaged with an end edge of the engagement hole so that the seat cushion is flipped up. The gist is that it is configured to be held.

  Here, it is preferable that an insertion hole is provided in the hinge bracket so that the pin member is inserted, and the engagement hole is provided in the seat cushion.

  In addition, the pin member may include an urging unit that is urged in a direction in which the pin member is removed from the engagement hole.

  Furthermore, it is preferable that the pin member and the engagement hole are provided on the seat side surface on the outer side in the width direction of the passenger compartment.

  According to the vehicle seat with the flip-up seat lock mechanism according to the above invention, there is no need to provide a band member or a bracket for maintaining the tip-up state, and a lock mechanism including a pin insertion hole, a pin member and an engagement hole is provided. Since it is provided only on the side surface of the seat, the configuration of the entire vehicle seat is simplified. Further, the tip-up state can be locked only by engaging the pin member with the engagement hole, and this operation is completed only by the operation on the side surface portion of the seat, so that the operability is excellent. If the side surface of the vehicle seat is located at a position where it can be operated from outside the vehicle compartment, the tip-up lock can be performed only from outside the vehicle.

  Here, when the pin member is provided in the hinge bracket and the engagement hole is provided in the seat cushion, the operator can work only by operating the hinge bracket outside when inserting the pin member into the engagement hole. The operability is better than the reverse case.

  In addition, if the biasing means biased in the direction for removing the pin member from the engagement hole is provided, the pin member is reliably held on the hinge bracket side in the seated state. Further, when the seat is returned from the tip-up state to the seating state, the engagement of the pin member with the engagement hole can be easily released.

  Furthermore, if the pin member and the engagement hole are provided on the side surface of the seat on the outer side in the width direction of the vehicle compartment, the seat cushion can be used without the operator getting into the vehicle compartment even when two seats are arranged in the width direction. Can be fixed in the chip-up state.

1 is a schematic perspective view of a vehicle seat with a flip-up seat lock mechanism according to an embodiment of the present invention, where (a) shows a seated state and (b) shows a tip-up state. It is a schematic side view of a vehicle seat with a flip-up seat lock mechanism in a seated state. It is a schematic side view of a vehicle seat with a flip-up seat lock mechanism in a tip-up state. It is a partial enlarged view of a vehicle seat with a flip-up seat lock mechanism. FIGS. 2A and 2B are cross-sectional views taken along the line A-A in FIG. 1, in which FIG. 1A is in a seated state, FIG. 1B is a state in which a pin member is inserted into an engagement hole in a tip-up state, and FIG. The locked state engaged with the hole edge is shown. It is a schematic perspective view of the conventional vehicle seat with a flip-up seat lock mechanism.

  Hereinafter, a vehicle seat with a flip-up seat lock mechanism according to an embodiment of the present invention will be described in detail with reference to the drawings. The vehicle seat 1 shown in FIGS. 1, 2 and 3 is provided as a rear seat of a passenger car. The vehicle seat 1 includes a seat cushion 3 that is a seating portion and a seat back 2 that is a backrest portion. The seat cushion 3 includes a cushion frame 4 serving as a skeleton and a pad 5 attached to the cushion frame 4.

  The seat cushion 3 is attached to a hinge bracket 7 whose lower end is fixed to the vehicle floor 6 at the left and right sides of the cushion frame 4. In the seated state, the seat cushion 3 is held substantially parallel to the vehicle floor surface 6 as shown in FIGS. The cushion frame 4 is attached so as to be rotatable in the front-rear direction about the hinge center 71, so that the seat cushion 3 can be flipped up toward the seat back 2. The state in which the seat cushion 3 is flipped up is the tip-up state shown in FIGS. 1B and 3, and the seat cushion 3 is in the tip-up state when it is desired to use the vehicle compartment widely for loading luggage. The In order to prevent the seat cushion 3 from swinging in the seated state, the seat cushion 3 is biased to the seated position.

  The hinge bracket 7 on one side is provided with a mechanism for locking the seat cushion 3 flipped up. FIG. 5A is a sectional view taken along the line AA in the vicinity of the hinge bracket 7 when the seat cushion 3 is in the seated state. A pin insertion hole 72 is provided in the hinge bracket 7. The pin member 9 is inserted into the pin insertion hole 72. The pin member 9 has a shaft portion 91 having a diameter smaller than the diameter of the pin insertion hole 72. A disc-shaped flange portion 93 having a diameter larger than the diameter of the pin insertion hole 72 is integrally formed at the tip of the shaft portion 91. A button 92 that cannot pass through the pin insertion hole 72 is connected to the rear end of the shaft portion 91. The shaft portion 91 is capable of translational movement in the axial direction while being inserted into the pin insertion hole 72, but both ends are prevented from being detached by the flange portion 93 and the button 92. The shaft portion 91 is inserted through a coil spring 94 provided between the button 92 and the hinge bracket 7. Since the coil spring 94 is biased in a direction in which the shaft portion 91 is removed from the pin insertion hole 72, the flange portion 93 is pressed against the inner surface of the hinge bracket 7. As a result, the pin member 9 is securely held by the hinge bracket 7 in the seated state, and the pin member 9 is prevented from swinging in the axial direction due to vehicle vibration or the like.

  Further, as shown in FIGS. 1 to 4, an extension bracket 8 extends forward at the rear end of the cushion frame 4. In FIG. 4, the hinge bracket 7 and the pin member 9 are not shown. The extension bracket 8 is engaged so that the pin member 9 can be inserted into a position facing the tip of the pin member 9 when the seat cushion 3 is rotated about the hinge center 71 to a position where the seat cushion 3 contacts the seat back 2. A hole 81 is formed. The hole diameter of the engagement hole 81 is larger than the diameter of the flange portion 93 of the pin member 9.

Next, a method of locking in the tip-up state in the vehicle seat with the flip-up seat lock mechanism according to the present embodiment will be described with reference to FIG. In the seated state, the pin member 9 is pressed toward the outside of the hinge bracket 7 by the coil spring 94 as shown in FIG. The extension bracket 8 and the engagement hole 81 provided therein are not close to the pin member and are not drawn in the drawing. Next, when the operator lifts the seat cushion 3 and rotates it toward the seat back 2, the seat cushion 3 comes into contact with the seat back 2. In this state, when the pin member 9 is pushed into the engagement hole 81, the tip of the pin member 9 enters the engagement hole 81 as shown in FIG. At this time, the coil spring 94 is compressed. At this time, it is necessary for the operator to support the seat cushion 3 by pressing the lower end portion of the seat cushion 3 by hand so as not to apply a load to the pin member 9 due to the weight of the seat cushion 3. is there.

Next, when the operator stops supporting the seat cushion 3, the cushion frame 4 including the extension bracket 8 moves downward within the range of the play of the hinge center 71 according to the gravity of the seat cushion 3 as shown in FIG. Move to. The direction of gravity, that is, the lower side of the vehicle corresponds to the left side in FIG. In this state, the flange portion 93 of the pin member 9 engages with the upper end edge of the engagement hole 81 moved downward. By engaging the flange portion 93 with the upper edge of the engagement hole 81, even if the operator releases the hand that has pushed the button 92 and a restoring force is applied to the coil spring 94, the pin member 9 remains in the engagement hole. The seat cushion 3 is locked in the tip-up state. Since the upper edge of the engagement hole 81 is constantly pressed against the pin member 9 due to the weight of the seat cushion 3, this locked state is maintained, and the seat cushion 3 spontaneously rotates forward to return to the seated state. There is no. If the flange portion 93 has a sufficient diameter, is deeply engaged with the edge of the engagement hole 81, and the load of the seat cushion 3 is sufficiently applied to the engagement portion, vibration is applied to the vehicle. Even when it is released, the lock is not released and the tip-up state is maintained.

  When returning the seat cushion 3 from the tip-up state to the seating state, the operator lifts the lower end portion of the seat cushion 3 in the tip-up state and the state shown in FIG. Just do it. Then, the engagement between the flange 93 of the pin member 9 and the end edge of the engagement hole 81 of the extension bracket 8 is released, and the pin member 9 naturally comes out of the engagement hole 81 by the restoring force of the coil spring 94. Thereafter, the operator may turn the seat cushion 3 forward about the hinge center 71 to be in a seated state.

  Since the hinge bracket 7 is provided on the side portion of the vehicle seat 1, if the vehicle seat 1 is a horizontally long seat that extends over substantially the entire width of the passenger compartment, the operator lifts the seat cushion 3 with one hand from the outside of the vehicle, By operating the button 92 by hand, the seat cushion 3 can be locked in the tip-up state without getting into the vehicle interior. Even in the case where two independent seats are arranged side by side in the front seat and the rear seat, if the pin member 9 and the engagement hole 81 are provided on the outer side surface of the seat in the width direction, The seat cushion 3 can be locked in the tip-up state only by an operation from the outside.

  Since the design of the sheet is not good when the hinge bracket 7 is exposed, a resin cover having a hole only in the portion of the button 92 may be provided outside the hinge bracket 7. Alternatively, in the case where the appearance can be improved only by painting, such a cover may not be provided, and the painting that conforms to the interior of the vehicle may be simply applied to the hinge bracket 7.

  As mentioned above, although embodiment of this invention was described in detail, this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the summary of this invention. For example, although it is inferior in operability compared with the above embodiment, an insertion hole is provided in the extension bracket of the seat cushion, a pin is inserted from the inside, and a configuration in which the insertion hole is formed in the hinge bracket is also possible. Good. In this case, when locking the tip-up state, the load of the seat cushion is applied to the pin member, and the flange portion is engaged with the lower end edge of the engagement hole.

Further, the shape of the pin member is not limited to the configuration exemplified above as long as the same function is achieved. Furthermore, in the said embodiment, although the case where a lock mechanism was provided in the rear seat of a passenger car was shown, the kind of vehicle and position of a seat which are applied are not limited.

  In the vehicle seat with the flip-up seat lock mechanism according to the present invention, the tip-up state in which the seat cushion is flipped up backward is held by the lock mechanism. There is also a seat that can be erected forward to a so-called tumble state. In such a seat, the hinge bracket is provided at the front end portion of the side surface of the seat cushion. If a lock mechanism including a pin member and an engagement hole similar to the above embodiment is provided in this portion, the seat cushion is in a tumble state. Can be locked to.

2 Seat back 3 Seat cushion 4 Cushion frame 7 Hinge bracket 71 Hinge center 72 Pin insertion hole 8 Extension bracket 81 Engagement hole 9 Pin member 91 Shaft part 92 Button 93 Flange part 94 Coil spring

Claims (4)

  In a vehicle seat in which a seat cushion is connected to a hinge bracket fixed to a vehicle floor so as to be rotatable in a front-rear direction plane of the vehicle on a side surface, provided on either the hinge bracket or the seat cushion A pin member having a flange portion for retaining the insertion hole at the tip of the side facing the seat cushion side surface and the hinge bracket is inserted so as to advance and retreat in the axial direction, and the pin member of the seat cushion and the hinge bracket is the pin member. If the insertion hole is not provided, the engagement is larger than the diameter of the flange portion at a position facing the tip of the pin member in a state in which the seat cushion is flipped up to the seat back side. A hole is provided, and the pin member is inserted into the engagement hole in a state where the seat cushion is flipped up. A seat for a vehicle with a flip-up seat lock mechanism, wherein the seat cushion is held in a state of being flipped up by engaging a flange portion with an edge of the engagement hole. .   The vehicle with a flip-up seat lock mechanism according to claim 1, wherein the hinge bracket is provided with an insertion hole so that the pin member is inserted, and the seat cushion is provided with the engagement hole. Sheet.   3. The vehicle seat with a flip-up seat lock mechanism according to claim 1, wherein the pin member has an urging means that is urged in a direction for removing the pin member from the engagement hole. .   The vehicle seat with a flip-up seat locking mechanism according to any one of claims 1 to 3, wherein the pin member and the engagement hole are provided on a seat side surface on the outer side in the width direction of the passenger compartment.

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