CN206475772U - A kind of back seat fold mechanism that can be stepped down backward - Google Patents
A kind of back seat fold mechanism that can be stepped down backward Download PDFInfo
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- CN206475772U CN206475772U CN201720013470.0U CN201720013470U CN206475772U CN 206475772 U CN206475772 U CN 206475772U CN 201720013470 U CN201720013470 U CN 201720013470U CN 206475772 U CN206475772 U CN 206475772U
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- connecting rod
- side link
- frame
- stepped down
- back seat
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Abstract
A kind of back seat fold mechanism that can be stepped down backward of the utility model, foldable structure is constituted by two four-bar linkages are compound, wherein first four-bar linkage is hinged is constituted successively by frame one, side link one, connecting rod one and side link two, frame one is fixedly connected with seat base, and the support of connecting rod one and backrest is connected to one；Second four-bar linkage is hinged is constituted successively by frame two, side link two, connecting rod two and side link three, frame two is connected to one with frame one, the rear end of connecting rod two is articulated and connected with the upper end of side link two and the front end of connecting rod one, and the front end and the upper end of side link three of connecting rod two are articulated and connected.The utility model has the advantages that simple in construction, easy to operate, processing capacity is few, cost is low, maneuverability and attractive appearance, the seat adjuster for the dilly that is particularly suitable for use in.
Description
Technical field
The utility model belongs to armchair structure technical field, and in particular to a kind of fold mechanism of seat.
Background technology
Existing seat, its back seat is narrow and small because of vehicle body space, causes heel row backrest in turnover, can cause head
Pillow and front-seat backrest are interfered, and back seat backrest can not normally fall, so, the solution of prior art is, or takes
Fell heel row backrest again after lower headrest；Or will again be fallen after headrest regulation to extreme lower position, this method only limits L-type headrest；Or
Set headrest that there is automatic turnover function.
The first above-mentioned solution troublesome poeration, the headrest removed are easy to lose without suitable bearing；Second scheme
Just in L-type headrest, effectively, when using headrest, the groove of a L-type occurs in backrest top, and aesthetic appearance is poor；The third
Scheme cost is high.
To overcome the defect present in prior art, the utility model is proposed.
Utility model content
The utility model needs the problem solved to be the behaviour present in the turnover mechanism for the heel row backrest for overcoming prior art
Make the defects such as troublesome, poor for applicability and cost is high, a kind of easy to operate, free to advance or retreat, maneuverability of proposition and attractive appearance
Back seat backrest turnover mechanism.
The purpose of this utility model is achieved by following technical proposals.
A kind of back seat fold mechanism that can be stepped down backward, it is characterized in that, foldable structure is by two hinge four-bar machines
Structure is compound to be constituted, wherein first four-bar linkage is hinged structure successively by frame one, side link one, connecting rod one and side link two
Into frame one is fixedly connected with seat base, and the support of connecting rod one and backrest is connected to one；Second hinge four
Linkage is hinged is constituted successively by frame two, side link two, connecting rod two and side link three, and frame two is fixedly connected as with frame one
One, the front end of the rear end of connecting rod two and the upper end of side link two and connecting rod one is articulated and connected, the front end of connecting rod two and frame linking
The upper end of bar three is articulated and connected.
The side link two of the side link two of first four-bar linkage and second four-bar linkage is same part zero
Part, in this way, then the action of second four-bar linkage is just controlled by first four-bar linkage, therefore referred to as compound hinges
Four-bar mechanism, wherein connecting rod one are former dynamic component.While backrest is moved toward front lower place upset, that is, connecting rod one is moved,
Also whole seat is stepped down backward so that its front vacating space, headrest can be accommodated.
Preferred scheme, two linkages are all double rocker mechanism.So-called double rocker mechanism i.e. in addition to frame and connecting rod, its
Two components of remaininging are rocking bar, therefore referred to as double rocker mechanism.
Preferred scheme, in first four-bar linkage, side link one is most long component, and connecting rod one is most short component,
And the length sum of side link two and connecting rod one is less than or equal to the length of side link one.
Preferred scheme, the foldable structure is symmetrically respectively provided with a set of in the left and right sides of seat.
Preferred scheme, the upper surface of connecting rod two is fixedly connected with seat cushion frame.
Locking mechanism is provided with preferred scheme, backrest.
Preferred scheme, if the length of frame one is a, the length of side link one is b, and the length of connecting rod one is c, side link two
Length be d, wherein a=b, and d2=a2+ac+c2.The length all refers on same component the distance between two pans,
When side link one and 11 straight line of connecting rod, side link one and the angle of frame one are just 60 °, make backrest and vertical side
To back rake angle be 60 °.
The beneficial effects of the utility model are：
1st, two four-bar linkages are compound is constituted, easy to operate, free to advance or retreat；
2nd, the headrest of which kind of structure can all be applied, strong applicability, and independent operation does not take up space separately, it is to avoid interference；
3rd, compound hinges four-bar mechanism, action is coherent, and profile is graceful；
4th, equipped with locking mechanism, maneuverability；
5th, simple in construction, linkage processing capacity is few, makes easy.
6th, cost is low.
Brief description of the drawings
Fig. 1 is a kind of example structure schematic diagram of the utility model；
Fig. 2 is the primary action schematic diagram of embodiment；
Fig. 3 is that the backrest of embodiment is overturn to the schematic diagram of front position.
In figure, frame 1；Side link 1；Connecting rod 1；Side link 24；Backrest 5；Frame 26；Connecting rod 27；Even
Hack lever 38；Headrest 9.
Embodiment
Embodiment of the present utility model is elaborated below in conjunction with the accompanying drawings：The present embodiment is with the utility model technology
It is lower premised on scheme to be implemented, give detailed embodiment and specific operating process, but protection of the present utility model
Scope is not limited to following embodiments.
Embodiment 1：As shown in figure 1, a kind of back seat fold mechanism that can be stepped down backward, foldable structure is by two hinges
Chain four-bar mechanism is compound to be constituted, and two linkages are all double rocker mechanism, wherein first four-bar linkage is by frame one
1st, side link 1, connecting rod 1 and side link 24 are hinged composition successively, and frame 1 is fixedly connected with seat base, connecting rod 1
It is connected to one with the support of backrest 5；Second four-bar linkage is by frame 26, side link 24, connecting rod 27
Composition is hinged successively with side link 38, and frame 26 is connected to one with frame 1, the rear end of connecting rod 27 and side link
24 upper end and the front end of connecting rod 1 are articulated and connected, and the front end and the upper end of side link 38 of connecting rod 27 are articulated and connected, even
The upper surface of bar 27 is fixedly connected with seat cushion frame.In first four-bar linkage, side link 1 is most long component,
Connecting rod 1 is most short component, and the length sum of side link 24 and connecting rod 1 is less than or equal to the length of side link 1, with
This ensures that the direction that backrest 5 leans forward is approached, at or below horizontal direction.Locking mechanism is provided with backrest 5.
The side link 24 of the side link 24 of first four-bar linkage and second four-bar linkage is same part
Part, in this way, then the action of second four-bar linkage is just controlled by first four-bar linkage, therefore referred to as composite hinge
Chain four-bar mechanism, wherein connecting rod 1 are former dynamic component.While backrest 5 are moved toward front lower place upset, that is, move connecting rod
One 3, also whole seat is stepped down backward so that its front is able to vacating space, headrest 9 can be accommodated.
Foldable structure is symmetrically respectively provided with a set of in the left and right sides of seat.
Specific operation process of the present utility model is：
The locking mechanism on backrest 5 is unclamped, with reference to Fig. 2, promotes backrest 5 to turn right forward, that is, upset, it is related to push away
The dynamic connecting rod 1 being connected as a single entity with it is turned right turn, then side link 1 and side link 24 turn to the left together.Due to side link
24 be that the original of second four-bar linkage moves component, so the work of turning left of drivening rod 27 involves fortune again by side link 24
It is dynamic, and because the upper surface of connecting rod 27 is fixedly connected with seat cushion frame, therefore when connecting rod 27 makees transport motion to the left
When, also just the seat frame being mounted in thereon is entirely turned left, i.e., rearward moved, its front is made a concession out a space, in
It is, when headrest 9 turns to front, the phenomenon answered back to front-row seats can just not occur again, as shown in Figure 3.
Aforesaid operations process, it is vice versa.
Embodiment 2：If the length of frame 1 is a, the length of side link 1 is b, and the length of connecting rod 1 is c, side link
24 length is d, wherein a=b, d2=a2+ac+c2.The length all refers to the distance between pan, when side link 1 with
Connecting rod 1 in line when, the angle of side link 1 and frame 1 is just 60 °, remaining structure be the same as Example 1.Due to hinge
Four-bar mechanism is general using analytic approach, diagram method or experimental method in design, and several method respectively has advantage and disadvantage, to the length of component
Do after some appropriate selections limit, can be with design processes simplified, and can guarantee that and reach design requirement, improve efficiency.
The utility model has that simple in construction, easy to operate, processing capacity is few, cost is low, maneuverability and attractive appearance
Advantage.It should be understood by those skilled in the art that, the utility model is not restricted to the described embodiments, above-described embodiment and explanation
Simply illustrate principle of the present utility model described in book, on the premise of the utility model spirit and scope are not departed from, this reality
Various changes and modifications are also had with new, these changes and improvements are both fallen within the range of claimed the utility model.This
Scope is claimed by appended claims and its equivalent thereof in utility model.
Claims (7)
1. a kind of back seat fold mechanism that can be stepped down backward, it is characterized in that, foldable structure is by two four-bar linkages
It is compound to constitute, wherein first four-bar linkage is hinged structure successively by frame one, side link one, connecting rod one and side link two
Into frame one is fixedly connected with seat base, and the support of connecting rod one and backrest is connected to one；Second hinge four
Linkage is hinged is constituted successively by frame two, side link two, connecting rod two and side link three, and frame two is fixedly connected as with frame one
One, the front end of the rear end of connecting rod two and the upper end of side link two and connecting rod one is articulated and connected, the front end of connecting rod two and frame linking
The upper end of bar three is articulated and connected.
2. a kind of back seat fold mechanism that can be stepped down backward according to claim 1, it is characterized in that, two hinges
Mechanism is all double rocker mechanism.
3. a kind of back seat fold mechanism that can be stepped down backward according to claim 2, it is characterized in that, at first
In four-bar linkage, side link one is most long component, and connecting rod one is most short component, and side link two and connecting rod one length it
With the length less than or equal to side link one.
4. a kind of back seat fold mechanism that can be stepped down backward according to claim 1,2 or 3, the foldable structure
Symmetrically it is respectively provided with the left and right sides of seat a set of.
5. a kind of back seat fold mechanism that can be stepped down backward according to claim 4, it is characterized in that, connecting rod two
Upper surface is fixedly connected with seat cushion frame.
6. a kind of back seat fold mechanism that can be stepped down backward according to claim 5, it is characterized in that, backrest
On be provided with locking mechanism.
7. a kind of back seat fold mechanism that can be stepped down backward according to claim 6, it is characterized in that, if frame one
Length be a, the length of side link one is b, and the length of connecting rod one is c, and the length of side link two is d, wherein a=b, and d2=
a2+ac+c2。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720013470.0U CN206475772U (en) | 2017-01-06 | 2017-01-06 | A kind of back seat fold mechanism that can be stepped down backward |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720013470.0U CN206475772U (en) | 2017-01-06 | 2017-01-06 | A kind of back seat fold mechanism that can be stepped down backward |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206475772U true CN206475772U (en) | 2017-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720013470.0U Active CN206475772U (en) | 2017-01-06 | 2017-01-06 | A kind of back seat fold mechanism that can be stepped down backward |
Country Status (1)
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| CN (1) | CN206475772U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106627267A (en) * | 2017-01-06 | 2017-05-10 | 麦格纳汽车技术（上海）有限公司徐汇分公司 | Rear-row seat folding mechanism capable of giving way backwards |
-
2017
- 2017-01-06 CN CN201720013470.0U patent/CN206475772U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106627267A (en) * | 2017-01-06 | 2017-05-10 | 麦格纳汽车技术（上海）有限公司徐汇分公司 | Rear-row seat folding mechanism capable of giving way backwards |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180308 Address after: 318000 Taizhou City, Zhejiang Province, South Road to the east section No. 9 Patentee after: Magna seating (Taizhou) Co. Ltd. Address before: 200233 Shanghai city Xuhui District Hong Cao Road, building A No. 88 unit 1 layer A Patentee before: Magna Automotive Technology (Shanghai) Co., Ltd. Xuhui branch |