CN108657036B

CN108657036B - Automatic folding seat chair mechanism of car that resets

Info

Publication number: CN108657036B
Application number: CN201810548208.5A
Authority: CN
Inventors: 孟正华; 王文博; 郭巍; 华林; 王旭; 袁泉
Original assignee: Wuhan University of Technology WUT
Current assignee: Wuhan University of Technology WUT
Priority date: 2018-05-31
Filing date: 2018-05-31
Publication date: 2020-02-18
Anticipated expiration: 2038-05-31
Also published as: CN108657036A

Abstract

The invention discloses an automatic reset automobile folding seat mechanism which comprises a cushion support, a seat back support, a locking mechanism, a link mechanism and a rotatable link rod, wherein the cushion support is hinged with the seat support and the seat back support through rotating shafts respectively, a torsional spring is sleeved on the rotating shafts, the locking mechanism is arranged on the seat support and used for realizing unfolding and locking of a seat, the link mechanism is connected with the seat support and the seat back support respectively, and two ends of the rotatable link rod are connected with the locking mechanism and the link mechanism respectively. The automatic resetting, folding and turning-up of the seat are realized, no manpower or motor is needed, the unfolding, folding and resetting operations of the seat are convenient, and the cost is low; the automobile folding seat mechanism is small in size, and can be used for modifying the existing automobile seat on the premise of not occupying too much space.

Description

Automatic folding seat chair mechanism of car that resets

Technical Field

The invention relates to the technical field of seats, in particular to an automatic reset automobile folding seat mechanism.

Background

The rear seats of 7-seat SUVs typically employ folding seats to increase the volume of the trunk. The folding mode of most back row seats is for vertically falling the seat back to the automobile body, to the SUV of non-formula automobile body of bearing, because the floor is higher, uses this kind of folding seat can lead to the trunk vertical space not enough, has reduced the loading space and the practicality of vehicle.

Some SUVs such as the toyota fortiner have adopted the back row seat that can be folded to both sides after laying down the seat back, though the loading practicality of the vehicle that original design strengthened is limited by the cost, under the prerequisite that does not use electronic folding seat, the back of the chair is laid down the back and the turnover of back seat all relies on the manpower, because the seat is heavier, the operation is very inconvenient.

Disclosure of Invention

The invention aims to solve the technical problems that aiming at the defects in the prior art, the invention provides the automatic reset automobile folding seat mechanism, which realizes the automatic reset, folding and turning-up of the seat, does not need manpower and a motor, is convenient to operate such as unfolding, folding and resetting the seat, and has low cost; the automobile folding seat mechanism is small in size, and can be used for modifying the existing automobile seat on the premise of not occupying too much space.

The technical scheme adopted by the invention for solving the technical problems is as follows:

the utility model provides an automatic folding seat chair mechanism of car that resets, includes the cushion support, the seat support, back of the chair support, locking mechanism, link mechanism and rotatable connecting rod, the cushion support is articulated through pivot and seat support and back of the chair support respectively, the cover is equipped with the torsional spring in the pivot, locking mechanism installs on the seat support for realize the expansion locking to the seat, link mechanism respectively with seat support and back of the chair leg joint, the both ends of rotatable connecting rod are connected with locking mechanism and link mechanism respectively.

According to the technical scheme, the connecting rod mechanism comprises a fixed rod and a swing rod, the fixed rod is arranged on the chair back support, the swing rod is provided with a fixed rotating shaft, the fixed rotating shaft is arranged on the cushion support, the swing rod rotates by taking the fixed rotating shaft as a center, and two ends of the swing rod are respectively hinged with the fixed rod and the rotatable connecting rod through pin shafts;

the locking mechanism comprises a lock catch, a stop block, a sliding block, a connecting rod and a sliding rail, the lock catch is fixed on the cushion support, the stop block is arranged on the sliding block, the sliding rail is fixedly arranged on the seat support, the sliding block is arranged on the sliding rail, the sliding block can move along the sliding rail, the sliding block is connected with one end of the connecting rod, the rotatable connecting rod is hinged to the other end of the connecting rod, and the rotatable connecting rod is locked and fastened with the connecting rod through a.

According to the technical scheme, the slide rail, the connecting rod and the rotatable connecting rod are collinear with the rotating shaft on the seat support.

According to the technical scheme, the stop block is hinged with the sliding block through the hinge shaft, and the hinge shaft is sleeved with the torsion spring.

According to the technical scheme, one end of the connecting rod is provided with the first sliding groove, the sliding block is tightly arranged on the first sliding groove through the bolt lock, and the sliding block can move and be adjusted along the first sliding groove after the bolt is loosened.

According to the technical scheme, the two ends of the swing rod are respectively provided with the second sliding groove, the pin shaft is arranged in the second sliding grooves, and the pin shaft can move along the second sliding grooves.

According to the technical scheme, the lock catch is a U-shaped lock catch.

According to the technical scheme, the elasticity of the torsion spring on the rotating shaft between the cushion support and the seat support is smaller than that of the torsion spring on the rotating shaft between the cushion support and the seat back support.

The invention has the following beneficial effects:

the automatic resetting, folding and turning-up of the seat are realized, no manpower or motor is needed, the unfolding, folding and resetting operations of the seat are convenient, and the cost is low; the automobile folding seat mechanism is small in size, and can be used for modifying the existing automobile seat on the premise of not occupying too much space.

Drawings

FIG. 1 is a schematic structural diagram of a folding seat mechanism for a vehicle that automatically returns when in an unfolded state according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of a folding seat mechanism for a vehicle that automatically returns when folded in a folded state according to an embodiment of the present invention;

FIG. 3 is a schematic view of the linkage mechanism in an embodiment of the present invention;

FIG. 4 is a schematic structural view of a locking mechanism in an embodiment of the present invention;

FIG. 5 is a schematic view of the portion of FIG. 2 from the direction A;

FIG. 6 is a schematic view of portion B of FIG. 1;

FIG. 7 is a schematic diagram of the movement of the plane mechanism of the automatic return folding seat mechanism of the vehicle in the embodiment of the invention;

FIG. 8 is a schematic illustration of an unlocking process of the automatic return folding seat mechanism of the vehicle in an embodiment of the present invention;

FIG. 9 is a partial schematic view of a rotatable link coupled to a link in an embodiment of the present invention;

in the figure, 1-a cushion bracket, 2-a seat bracket, 3-a chair back bracket, 4-a U-shaped lock catch, 5-a stop dog, 6-a slide block, 7-a connecting rod, 8-a rotatable connecting rod, 9-a slide rail, 10-a swing rod, 11-a locking mechanism, 12-a fixed rod and 13-a pin hole.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and examples.

Referring to fig. 1 to 9, an embodiment of the present invention provides an automatic-return folding seat mechanism for an automobile, including a seat cushion support 1, a seat support 2, a seat back support 3, a locking mechanism 11, a link mechanism and a rotatable link 8, where the seat cushion support 1 is hinged to the seat support 2 and the seat back support 3 through a rotation shaft, the rotation shaft is sleeved with a torsion spring, the locking mechanism 11 is installed on the seat support 2 and used to realize unfolding and locking of a seat, the link mechanism is connected to the seat support 2 and the seat back support 3, two ends of the rotatable link 8 are connected to the locking mechanism 11 and the link mechanism, the rotatable link 8 is used to realize rotating and flipping of the folded seat, and the occupied space is small after the seat is folded and rotated and flipped.

Further, the link mechanism comprises a fixed rod 12 and a swing rod 10, the fixed rod 12 is arranged on the chair back support 3 (the fixed rod 12 is sleeved on a rotating shaft of the chair back support 3), the swing rod 10 is provided with a fixed rotating shaft, the fixed rotating shaft is arranged on the cushion support 1, the swing rod 10 can rotate by taking the fixed rotating shaft as a center, two ends of the swing rod 10 are respectively hinged with the fixed rod 12 and the rotatable link 8 through pin shafts, the rotatable link 8 is provided with a pin hole 13, and the pin hole 13 is connected with the swing rod 10 through the pin hole 13 and the pin;

locking mechanism 11 includes hasp 4, dog 5, slider 6, connecting rod 7 and slide rail 9, and the hasp is fixed in on the cushion support 1, and dog 5 sets up on slider 6, and slide rail 9 sets firmly on seat support 2, and slider 6 sets up on slide rail 9, and slider 6 can follow slide rail 9 and remove, and slider 6 is connected with the one end of connecting rod 7, and rotatable connecting rod 8 is articulated with the other end of connecting rod 7, and rotatable connecting rod 8 passes through the bolt and links up 7 locking fastening.

Further, a rotatable connecting rod 8 is nested at the other end of the connecting rod 7, and the rotatable connecting rod 8 is tightly locked and fastened with the connecting rod 7 through a bolt, and the bolt is used for nesting of the connecting rod 7 and the rotatable connecting rod 8.

Further, the installation positions of the slide rail 9, the connecting rod 7 and the rotatable connecting rod 8 are collinear with the rotating shaft on the seat support 2; when the seat cushion support 1 and the chair back support 3 integrally rotate around the chair support 2, the link mechanism is not interfered.

Furthermore, the stop block 5 is hinged with the slide block 6 through a hinge shaft, and a torsion spring is sleeved on the hinge shaft; make dog 5 can only unidirectional rotation, when launching the seat, 4 jack-ups dogs 5 of hasp bottom the seat, lay flat the seat after, dog 5 rebounds automatically under the torsional spring effect and gets into the hasp, realize the locking to the seat.

Furthermore, one end of the connecting rod 7 is provided with a first sliding chute, the sliding block 6 is tightly fixed on the first sliding chute through a bolt lock, and the sliding block 6 can move and adjust along the first sliding chute after the bolt is loosened; the connecting rod 7 is provided with a sliding groove, when the backrest of the seat is unfolded, a section of idle stroke exists, and when the backrest of the seat is unfolded to a certain angle, the connecting rod 7 pulls the sliding block 6 to enable the stop block 5 connected to the sliding block 6 to be separated from the lock catch 4; the positioning of a plurality of angles after the seat is unfolded is realized.

Furthermore, two ends of the swing rod 10 are both provided with a second sliding chute, a pin shaft is arranged in the second sliding chute, and the pin shaft can move along the second sliding chute; the rotatable connecting rod 8 is ensured to move in the horizontal direction, and the rotation of the chair back bracket 3 is not interfered.

Further, the lock catch is a U-shaped lock catch 4.

Further, the elasticity of the torsion spring on the rotating shaft between the cushion bracket 1 and the seat bracket 2 is smaller than that of the torsion spring on the rotating shaft between the cushion bracket 1 and the seat back bracket 3.

Further, the rotatable connecting rod comprises an upper rod and a lower rod, the upper rod is hinged with the lower rod through a bolt, the upper rod and the lower rod can be prevented from rotating when the bolt is locked, and the upper rod and the lower rod can rotate relatively when the bolt is loosened.

As shown in fig. 7 and 8, the solid line in fig. 7 indicates a state when the automatic returning folded seat mechanism for an automobile is unfolded, and the broken line indicates a state when the automatic returning folded seat mechanism for an automobile is folded; in fig. 8, the solid line represents the position of the locking mechanism 11 and the link mechanism in the unlocked state, the dotted line represents the position of the locking mechanism 11 and the link mechanism in the locked state, and the using process of the automatic return folding seat mechanism for the automobile comprises the following steps:

1) the user manually lays flat the cushion support 1 and the backrest support, at this time, the swing rod 10 rotates to the vertical direction, and the stop dog 5 enters the U-shaped lock catch 4 to lock the cushion support 1 at the horizontal position.

2) A user manually unfolds the seat backrest, a fixed rod 12 on the seat back support 3 enables a swing rod 10 to rotate, a rotatable connecting rod 8 connected with the swing rod 10 pulls a connecting rod 7 to move backwards, the moving distance does not exceed the length of a sliding groove in the connecting rod 7, the seat backrest is fixed to a proper sitting angle through other mechanisms, and at the moment, the lock catch 4 and the stop block 5 still lock the seat cushion support 1.

3) When the seat needs to be automatically reset and folded, a user manually releases the fixation of the seat back, pushes the seat back backwards to increase the unfolding angle of the seat back, and enables the swing rod 10 to continue rotating, so that the moving distance of the connecting rod 7 exceeds the length of the sliding groove in the connecting rod 7, at the moment, the sliding block 6 starts to move backwards along the sliding rail 9, the stop block 5 is pulled out of the U-shaped lock catch 4, and the seat cushion support 1 is unlocked.

4) After unlocking, the chair back support 3 and the seat cushion support are automatically folded and reset under the action of the torsion spring, and because the elasticity of the torsion spring between the seat cushion support 1 and the chair back support 2 is smaller than the elasticity of the torsion spring between the seat cushion support 1 and the chair back support 3, the backrest support is folded first, and the chair support is folded again.

The above is only a preferred embodiment of the present invention, and certainly, the scope of the present invention should not be limited thereby, and therefore, the present invention is not limited by the scope of the claims.

Claims

1. An automatic reset automobile folding seat mechanism is characterized by comprising a cushion support, a seat back support, a locking mechanism, a link mechanism and a rotatable link, wherein the cushion support is hinged with the seat support and the seat back support through a rotating shaft respectively;

the connecting rod mechanism comprises a fixed rod and a swing rod, the fixed rod is arranged on the chair back support, the swing rod is provided with a fixed rotating shaft, the fixed rotating shaft is arranged on the cushion support, the swing rod rotates by taking the fixed rotating shaft as the center, and two ends of the swing rod are respectively hinged with the fixed rod and the rotatable connecting rod through pin shafts;

2. The self-righting vehicle folding seat assembly of claim 1 wherein the track, link and rotatable link are collinear with the pivot axis on the seat support.

3. The automatic returning vehicle folding seat mechanism of claim 1, wherein the stopper is hinged to the slider by a hinge shaft, and a torsion spring is sleeved on the hinge shaft.

4. The automatic returning vehicle folding seat mechanism of claim 1, wherein the connecting rod has a first sliding slot at one end, the sliding block is fastened to the first sliding slot by a bolt lock, and the sliding block can move and adjust along the first sliding slot after the bolt is loosened.

5. The automatic returning automobile folding seat mechanism as claimed in claim 1, wherein the two ends of the swing link are respectively provided with a second sliding slot, the pin shaft is arranged in the second sliding slot, and the pin shaft can move along the second sliding slot.

6. The self-righting vehicle folding seat assembly as set forth in claim 1, wherein the latch is a U-shaped latch.

7. The automatic-return folding seat mechanism for automobile as claimed in claim 1, wherein the spring force of the torsion spring on the rotating shaft between the seat cushion bracket and the seat back bracket is smaller than the spring force of the torsion spring on the rotating shaft between the seat cushion bracket and the seat back bracket.