CN204749894U - Seat cushion flip control mechanism for vehicle seat - Google Patents

Abstract

The utility model belongs to the technical field of vehicle seat, a seatpad upset control mechanism for vehicle seat is related to, including back skeleton and seatpad skeleton, the downside of seatpad skeleton articulates the downside at back skeleton, and the downside of back skeleton articulates there is the locking piece that the lower extreme has the locking groove, is provided with the locking extension spring between back skeleton and the locking piece, and the rear portion of seatpad skeleton is fixed with the seatpad skeleton corotation and packs up the locking tooth of back card on the locking groove, and the radius of gyration of locking tooth tip is greater than the radius of gyration of locking piece outer end, and the seatpad skeleton is in packing up to the rotation angle of putting down, and locking tooth outer end point has twice to intersect with the rotatory orbit of locking piece outer end point, and: the seat cushion overturning and locking mechanism has the advantages of simple structure, less occupied space and convenience in adjustment, the locking state is not influenced by the angle of the backrest, and the seat cushion overturning and locking mechanism is suitable for a seat cushion overturning and locking control mechanism of a vehicle seat.

Description

Seat cushion flip control mechanism for vehicle seat

technical field

The utility model belongs to the technical field of vehicle seats, in particular to a vehicle seat used for a seat cushion flip control system.

Background technique

When the vehicle driver and occupant enter the cab, the first thing their legs touch is usually the seat cushion. While the seat cushion provides a comfortable ride, it also creates a certain degree of hindrance for the activities of people getting on and off the car. When the seat cushion can be turned up and locked, more space is released in front of the seat, which improves the convenience and comfort of the occupants.

Utility model content

The purpose of the utility model is to provide a seat cushion flip control mechanism for a vehicle seat.

The purpose of this utility model is achieved in that:

A seat cushion flip control mechanism for a vehicle seat, comprising a backrest frame and a seat cushion frame, the lower side of the seat cushion frame is hinged to the lower side of the backrest frame, and the lower side of the backrest frame is hinged with a locking mechanism with a locking groove at the lower end. There is a locking tension spring between the backrest frame and the locking block. The rear part of the seat cushion frame is fixed with a locking tooth that is stuck on the locking groove after the seat cushion frame is forward rotated and stowed away. The radius of gyration is larger than that of the outer end of the locking block, and within the rotation angle of the seat cushion frame from being folded up to being laid down, the rotation track of the outer end point of the locking tooth and the outer end point of the locking block intersects twice.

The hinge shaft of the above-mentioned seat cushion frame is located on the upper side of the locking pin of the locking block. When the seat cushion frame is in the seating position, the locking teeth are located on the lower side of the locking block and the upper ends of the locking teeth are higher than the locking pins. The groove, the hinge shaft of the seat cushion skeleton and the locking teeth are located on one side of the locking pin of the locking block.

When the above-mentioned seat cushion frame is in the stowed or lowered position, the axes of the locking extension springs are all located at the lower right side of the locking pin of the locking block.

In the rotation angle of less than 90 degrees and greater than 70 degrees of the above-mentioned seat cushion frame from being stowed to put down, the rotation track of the outer end point of the locking tooth and the outer end point of the locking block intersects twice.

A locking support frame is fixed on the lower side of the above-mentioned backrest frame, and the locking block is hinged on the locking support frame.

The above-mentioned locking block is made of powder metallurgy material.

The lower end of the above-mentioned back frame is hinged on the seat base, and a device for adjusting the turning angle of the back frame is arranged between the back frame and the seat base.

Compared with the prior art, the utility model has outstanding and beneficial technical effects as follows:

1. The locking block of the utility model is manufactured by powder metallurgy, and the key parts are heat-treated to ensure the flexibility, precision, strength and durability of the mechanism.

2. The utility model adopts manual adjustment, without arranging complex switch parts, and the overall operation is coherent and convenient.

3. The locked state of the utility model is not affected by the angle of the backrest.

4. The utility model adds a small amount of parts such as locking blocks and locking support blocks to the original seat platform, and realizes the function of flipping, locking and unlocking the seat cushion reliably and at low cost. It reduces the independent flip platform that used special parts such as gas springs in the past, which reduces the cost and saves the space occupied by the seat.

5. It is suitable for the control mechanism of the seat cushion flip lock of the vehicle seat.

Description of drawings

Fig. 1 is a schematic diagram of the positions of the locking teeth and locking blocks when the seat cushion frame of the present invention is in the lowered position.

Fig. 2 is a schematic diagram of the positions of the locking teeth and locking blocks when the seat cushion frame of the present invention is in the stowed position.

Fig. 3 is a perspective view of the utility model.

Fig. 4 is a three-dimensional schematic view of the utility model when it is close to locking.

FIG. 5 is a partially enlarged schematic diagram along the M direction of FIG. 4 .

Fig. 6 is a three-dimensional schematic diagram of the utility model after locking.

FIG. 7 is a partially enlarged schematic view of FIG. 6 .

Fig. 8 is a structural schematic diagram of the utility model when flipping and unlocking.

FIG. 9 is a partially enlarged schematic view of FIG. 8 .

Fig. 10 is a schematic diagram of the first unlocking and resetting process of the present invention.

Fig. 11 is a schematic diagram of the second unlocking and reset process of the utility model.

Fig. 12 is a schematic diagram of the third unlocking and reset process of the utility model.

Fig. 13 is a schematic diagram of process 1 of the locking rear seat cushion skeleton following the rotation of the backrest skeleton of the utility model.

Fig. 14 is a schematic diagram of the second process of the locking rear seat cushion skeleton following the rotation of the backrest skeleton of the utility model.

Fig. 15 is a schematic diagram of the third process of the locking rear seat cushion skeleton following the rotation of the backrest skeleton of the utility model.

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings with specific embodiments, referring to Fig. 1-Fig. 15:

A seat cushion flip control mechanism for a vehicle seat, comprising a backrest frame 1 and a seat cushion frame 8, the lower side of the seat cushion frame 8 is hinged to the lower side of the backrest frame 1, and the lower side of the backrest frame 1 is hinged with a lower end with a lock The locking block 7 of the stop groove 10, the locking extension spring 2 is arranged between the backrest frame 1 and the locking block 7, and the rear part of the seat cushion frame 8 is fixed with the seat cushion frame 8 being stuck in the locking groove after forward rotation and stowage. The locking tooth 11 on 10, the radius of gyration at the end of the locking tooth 11 is greater than the radius of gyration at the outer end of the locking block 7, and the seat cushion skeleton 8 is within the rotation angle from being folded up to putting down, the outer end of the locking tooth 11 is in contact with the locking The rotation trajectory of the outer endpoint of block 7 intersects twice, and the intersection points are two points A and B.

The hinge shaft 12 of the above-mentioned seat cushion frame 8 is located on the upper side of the locking pin shaft 13 of the locking block 7. When the seat cushion frame 8 is in the seating position (horizontal position), the locking teeth 11 are located on the lower side of the locking block 7. And the upper end of the locking tooth 11 is higher than the locking groove 10 , the hinge shaft 12 of the seat cushion frame 8 and the locking tooth 11 are located on one side of the locking pin 13 of the locking block 7 .

When the above-mentioned seat cushion frame 8 is in the stowed (vertical) or lowered (horizontal) position, the axis of the locking extension spring 2 is located at the lower right side of the locking pin 13 of the locking block 7 .

In the rotation angle G of the above-mentioned seat cushion frame 8 from being folded up to being put down, which is less than 90 degrees and greater than 70 degrees, the rotation track of the outer end point of the locking tooth and the outer end point of the locking block intersects twice, and the intersection points are A and B. point.

A locking support frame 3 is fixed on the lower side of the above-mentioned backrest frame 1 , and the locking block 7 is hinged on the locking support frame 3 .

The material of the above-mentioned locking block 7 is powder metallurgy material, and subsequent heat treatment takes into account precision, durability and strength.

The lower end of the above-mentioned back frame 1 is hinged on the seat base, and a device for adjusting the turning angle of the back frame 1 is arranged between the back frame 1 and the seat base.

The working process of the present utility model is described in detail as follows:

A pair of hinge holes are arranged behind the seat cushion frame 8 of the seat, so that the seat cushion can rotate freely around the hinge shaft 12 . Simultaneously, a locking block 7 is fixed on the seat back frame 1, and this locking block can rotate around the locking pin shaft 13, and is subject to the pretension force of the locking extension spring 2 that one end is connected with the back frame.

Locking stage: when the seat cushion slowly rises, the seat cushion frame 8 slowly slides to the locking groove (engagement part) of the locking block 7 until the locking teeth 11 of the seat cushion frame snap into the lock of the locking block 7 groove 10 with a click. Now the degree of freedom of the seat cushion skeleton 8 revolutions is constrained: on the one hand, the locking block 7 has blocked the seat cushion skeleton 8 so that it cannot fall back down, and the seat cushion has turned to the position facing the backrest on the other hand and the backrest cushion Press against each other (see Fig. 5: backrest boundary 21 and seat cushion boundary 22 interference parts), the up and down rotation of the seat cushion is restricted like this, and the seat cushion is in a locked state.

Unlocked state: see Figures 8-9, if you continue to apply force F to the front of the seat cushion to overcome the resilience of the backrest cushion to the seat cushion, the seat cushion can continue to rotate toward the backrest, and the locking block 7 and the seat cushion skeleton can continue to Relatively slide until the locking block 7 and the seat cushion frame are out of contact. At this time, the locking block 7 turns back to the initial equilibrium position due to the force of the tension spring. With the return of the locking block, the downward rotation constraint of the seat cushion is released, the seat cushion can fall back freely forward, and the seat cushion is unlocked.

Reset stage: see Figures 10-12, as the seat cushion falls forward, the seat cushion skeleton 8 meets the locking block 7 at the equilibrium position again, and drives the locking block 7 to leave the equilibrium position and rotate backwards (Figure 10) , and return to the equilibrium position (Fig. 11) until disengaging, preparing for the next round of flip lock (Fig. 12). At this point, the seat cushion has completed a flip locking and unlocking action.

Locking state at different angles of the backrest: From the perspective of the locking stage, the rotation of the seat cushion is constrained by the backrest cushion and the locking block 7. When the backrest is at different angles, the backrest cushion and the locking block 7 follow the backrest Rotating (the locking block 7 is fixed on the backrest frame 1), so the above-mentioned restraint state is consistent under different angles of the backrest, that is, when the backrest is at different angles, the seat cushion can be locked stably (as shown in Figure 13- Figure 15 three locking states).

The foregoing embodiments are only preferred embodiments of the present utility model, and are not intended to limit the scope of protection of the present utility model. Therefore: all equivalent changes made according to the structure, shape, and principle of the present utility model should be covered by this utility model. within the scope of protection of utility models.

Claims (7)

1. A seat cushion flip control mechanism for a vehicle seat, comprising a backrest frame and a seat cushion frame, characterized in that the underside of the seat cushion frame is hinged to the underside of the backrest frame, and the lower side of the backrest frame is hinged with a lower end with a The locking block of the locking groove, the locking extension spring is arranged between the backrest frame and the locking block, and the rear part of the seat cushion frame is fixed with the locking teeth that are stuck on the locking groove after the seat frame is forwardly rotated and folded away. The radius of gyration at the end of the locking tooth is greater than the radius of gyration at the outer end of the locking block, and the seat cushion frame intersects twice with the rotation track of the outer end of the locking tooth and the outer end of the locking block within the rotation angle from retraction to laying down. 2. The seat cushion flip control mechanism for a vehicle seat according to claim 1, characterized in that: the hinge shaft of the seat cushion frame is located on the upper side of the locking pin of the locking block, and the seat cushion frame is located on the upper side of the seat. During position, locking tooth is positioned at the downside of locking block and the upper end of locking tooth is higher than locking groove, and the hinge shaft of seat cushion frame and locking tooth are positioned at the side of the locking pin of locking block. 3. The seat cushion flip control mechanism for a vehicle seat according to claim 1, characterized in that: when the seat cushion frame is in the stowed or put down position, the axes of the locking tension springs are all located at the lock of the locking block. Lower right side of the stop pin. 4. The seat cushion flip control mechanism for a vehicle seat according to claim 1, characterized in that: within the rotation angle of less than 90 degrees and greater than 70 degrees of the seat cushion frame from being stowed to put down, the locking teeth There are two intersections between the outer end point and the rotation track of the outer end point of the locking block. 5. The vehicle seat cushion flip control mechanism according to claim 1, characterized in that: the lower side of the backrest frame is fixed with a locking support frame, and the locking block is hinged on the locking support frame superior. 6. The seat cushion flip control mechanism for a vehicle seat according to claim 1, characterized in that: the material of the locking block is powder metallurgy material. 7. The seat cushion flip control mechanism for a vehicle seat according to any one of claims 1-6, characterized in that: the lower end of the backrest frame is hinged on the seat base, and the connection between the backrest frame and the seat base is A backrest frame flip angle adjustment device is arranged between them.