CN108928267A

CN108928267A - Seat for vehicle and its manufacturing method

Info

Publication number: CN108928267A
Application number: CN201810516352.0A
Authority: CN
Inventors: 熊崎义之
Original assignee: Toyota Boshoku Corp
Current assignee: Toyota Boshoku Corp
Priority date: 2017-05-26
Filing date: 2018-05-25
Publication date: 2018-12-04
Anticipated expiration: 2038-05-25
Also published as: JP2018199423A; CN108928267B; JP6812904B2

Abstract

The present invention provides a kind of seat for vehicle and its manufacturing method.Seat for vehicle has：Support portion is supported backrest in a manner of it can rotate；Backrest is remained the state that can be leaned on by holding mechanism；And releasing mechanism, it releases the holding to backrest and backrest is changed to the state that can be toppled over.Holding mechanism has engaging part, and releasing mechanism, which has, is entered component and cam.First and second plate-shaped member of first and second sleeve is configured with opposite each other and is fixed in the inner space of the side frame of backrest.Cam and engaging part are supported with the state clipped by first and second plate-shaped member by first and second pin.First pin is inserted in first sleeve in a manner of it can slide, and the second pin is inserted in second sleeve.

Description

Seat for vehicle and its manufacturing method

Technical field

This disclosure relates to seat for vehicle and its manufacturing method, more particularly, to the vehicle being arranged in the vehicles such as automobile With seat and its manufacturing method.

Background technique

In the past, as vehicle seat used, it is known in the angle modulation function of keeping backrest with desired backrest angle Except have the structure of the function of making backrest be poured onto the degree that cannot be leaned on as such as current function.

Such as Japanese Unexamined Patent Publication 2012-20595 bulletin discloses and has the vehicle seat used of current function.It is used in the vehicle It, can be by being made of release board, cam and hook plate of outer side surface over-assemble of the side frame in backrest etc. in seat Laying down mechanism, release the holding of backrest, thus backrest can be poured onto the degree that cannot be leaned on.

Summary of the invention

However, constituting the various compositions zero of above-mentioned laying down mechanism in the case where using structure disclosed in above-mentioned bulletin Part is much arranged to lean on the outside of seat width direction than the side frame of backrest, therefore can generate the space in compressing vehicle The problem of.Especially have current function it is vehicle seat used in, occupant is via the automobile seat for being provided with the laying down mechanism The space of the side of chair is got on or off the bus, and therefore, it is desirable to ensure that the space of the side is bigger.

On the other hand, laying down mechanism usually requires more constituent part, therefore, it is desirable to simplify its structure as much as possible, and And these constituent parts are designed to be able to efficiently be assembled also critically important.

Therefore, the disclosure is in order to solve the problem above-mentioned and making, and it is an object of the present invention to provide one kind has makes backrest incline Down to the function of falling for the degree that cannot be leaned on, and it can be realized narrowization in seat width direction, and can be easy to manufacture Seat for vehicle and the seat for vehicle manufacturing method.

Seat for vehicle based on the disclosure has：Support portion, to backrest with can be along seat width The mode that the rotary shaft that direction extends rotates for rotation center is supported；Back frame constitutes the bone of above-mentioned backrest Frame；Above-mentioned backrest is remained the first state that can be leaned on by holding mechanism；And releasing mechanism, release above-mentioned holding machine Holding of the structure to above-mentioned backrest, and above-mentioned backrest is changed to the second state that can be toppled over.Above-mentioned back frame Side frame with the one end being located on seat width direction, above-mentioned side frame have：External side wall is located at seat width side Upward outside and extend along seat up and down direction；Inside wall portion, inside on seat width direction and along seat Up and down direction extends；Front side wall portion, front side on seat front-rear direction and extends along seat up and down direction；And rear wall Portion, rear side on seat front-rear direction and extends along seat up and down direction, and thus above-mentioned side frame has by above-mentioned outer The inner space that sidewall portion, above-mentioned inside wall portion, above-mentioned front side wall portion and above-mentioned rear side wall portion define.Above-mentioned holding mechanism has Engaging part, above-mentioned engaging part are equipped with the holding section that can be engaged with the engaged part for being set to above-mentioned support portion, above-mentioned releasing Mechanism has：It is entered component, is rotated by receiving from external input；And cam, receive from above-mentioned defeated Enter the power transmitting of component and is rotated.Above-mentioned engaging part is rotated and being pressed by above-mentioned cam, is thus switched The fastening state engaged for above-mentioned holding section with above-mentioned engaged part and above-mentioned holding section do not engage with above-mentioned engaged part non- Fastening state.The above-mentioned seat for vehicle based on the disclosure is also equipped with the first plate-shaped member and the second plate-shaped member, above-mentioned First plate-shaped member and above-mentioned second plate-shaped member configures in opposite directions along seat width direction and at least the above first plate-like portion Part and above-mentioned respective a part of second plate-shaped member are incorporated in above-mentioned inner space, and above-mentioned first plate-shaped member is than above-mentioned Two plate-shaped members are configured close to above-mentioned inside wall portion.It is above-mentioned to be entered component and above-mentioned cam is configured to along seat The first pin that width direction extends rotates jointly for rotation center, and above-mentioned engaging part is configured to along seat width The second pin that direction extends rotates for rotation center.Above-mentioned first pin and above-mentioned second pin be set as penetrating through above-mentioned inside wall portion, Above-mentioned first plate-shaped member, above-mentioned second plate-shaped member and above-mentioned external side wall.It is above-mentioned to be entered component to be configured in above-mentioned The state of the outside in portion space and by it is above-mentioned first pin support.Above-mentioned cam is by above-mentioned first plate-shaped member and above-mentioned second plate State that shape component clips and supported by above-mentioned first pin, and above-mentioned engaging part is by above-mentioned first plate-shaped member and above-mentioned State that second plate-shaped member clips and supported by above-mentioned second pin.The above-mentioned seat for vehicle based on the disclosure also has It is standby：First sleeve has and carries out the sliding contact surface of sliding contact with above-mentioned cam and be fixed on above-mentioned first plate-shaped member； And second sleeve, it is fixed on above-mentioned first plate-shaped member and above-mentioned second plate-shaped member, side of above-mentioned first pin can slide Formula is inserted in above-mentioned first sleeve, and above-mentioned second pin is inserted in above-mentioned second sleeve.

The manufacturing method of seat for vehicle based on the disclosure is for manufacturing the above-mentioned traffic work based on the disclosure The method that tool uses seat, the manufacturing method of above-mentioned seat for vehicle include the following steps, namely：Above-mentioned first sleeve is embedded in Above-mentioned first plate-shaped member and above-mentioned second sleeve is fixed on above-mentioned first plate-shaped member；To being embedded in above-mentioned first plate The above-mentioned first sleeve of component is embedded in above-mentioned cam and is embedded in the above-mentioned second sleeve for being fixed on above-mentioned first plate-shaped member Thus above-mentioned cam and above-mentioned engaging part are positioned and are configured at above-mentioned first plate-shaped member by above-mentioned engaging part；With will be upper It states cam and above-mentioned engaging part is sandwiched in mode between above-mentioned second plate-shaped member and above-mentioned first plate-shaped member, to being embedded in The above-mentioned first sleeve of above-mentioned first plate-shaped member is embedded in above-mentioned second plate-shaped member and to being fixed on above-mentioned first plate-like portion Fixed above-mentioned second plate-shaped member of the above-mentioned second sleeve of part, thus produces intermediate assembly；Above-mentioned intermediate assembly is inserted Enter above-mentioned side frame and is positioned；Above-mentioned first pin is inserted in above-mentioned first sleeve in a manner of it can slide, and will Above-mentioned second pin is inserted in above-mentioned second sleeve；And by it is above-mentioned be entered component and be fixed on be inserted in the above-mentioned of above-mentioned first sleeve First pin, and above-mentioned second pin is fixed on above-mentioned side frame.

Above-mentioned and other purposes, feature, aspect and advantage of the invention can according to attached drawing associatedly understand about this Invention following detailed description and define.

Detailed description of the invention

Fig. 1 is the vehicle seat used structure for indicating embodiment and the outline side view for function of falling.

Fig. 2 is the approximate stereogram for indicating the skeleton structure of vehicle seat used major part shown in FIG. 1.

Fig. 3 is the side frame to backrest for indicating vehicle seat used recliner and laying down mechanism shown in FIG. 1 The exploded view of the package assembly of frame assembling.

Fig. 4 is the schematic sectional view and the side frame for the side frame for indicating the backrest along IVA-IVA line shown in Fig. 3 The schematic sectional view of the other structures example of frame.

Fig. 5 is the outline side view of vehicle seat used recliner and laying down mechanism shown in FIG. 1.

Fig. 6 is the schematic sectional view along line VI -- VI shown in fig. 5.

Fig. 7 is along the top view with regard to seat width direction cam shown in fig. 5 from inside.

Fig. 8 is the schematic sectional view along VIII-VIII line shown in fig. 5.

Fig. 9 be indicate it is shown in Fig. 1 it is vehicle seat used in relieve the shape of engaging of the laying down mechanism with recliner The outline side view of state.

Figure 10 is the approximate stereogram for the state for indicating that vehicle seat used middle backrest shown in Fig. 1 was fallen.

Figure 11 is the schematic sectional view for illustrating the vehicle seat used manufacturing method of present embodiment.

Figure 12 is the schematic sectional view for illustrating the vehicle seat used manufacturing method of present embodiment.

Figure 13 is the schematic sectional view for illustrating the vehicle seat used manufacturing method of present embodiment.

Figure 14 is the schematic sectional view for illustrating the vehicle seat used manufacturing method of present embodiment.

Figure 15 is the schematic sectional view for indicating the other structures example near the first pin.

Specific embodiment

Hereinafter, the embodiments of the present invention being described in detail with reference to the attached drawings.Embodiment as shown below exemplify by The present invention is applied to the case where vehicle seat used and its manufacturing method for the seat for being configured to automobile.In addition, as shown below In embodiment, for identical or common part, same appended drawing reference is marked in figure, does not repeat its explanation.

Fig. 1 is the vehicle seat used structure for indicating present embodiment and the outline side view for function of falling, Fig. 2 are to indicate The approximate stereogram of the skeleton structure of vehicle seat used major part shown in FIG. 1.Firstly, for referring to above-mentioned Fig. 1 and Fig. 2 The vehicle seat used structure and function of falling etc. schematically of bright present embodiment.In addition, in fig. 1 and fig. 2, for the ease of Understand and be omitted respectively the diagram of the constituent part of a part.

The vehicle seat used occupant being envisioned for take one's seat of present embodiment is towards being set to vehicle in a manner of vehicle front side , seat front-rear direction is consistent with vehicle front-rear direction, and seat up and down direction is consistent with vehicle up and down direction, seat width direction It is consistent with vehicle-width direction.In addition, the vehicle seat used of present embodiment is envisioned for being set to vehicle left side, seat left direction Unanimously with vehicle outside direction (that is, direction of vehicle door side), seat right direction and vehicle interior side direction are (that is, the side of right seat side To) consistent.

As shown in Figure 1, vehicle seat used 1 has seat cushion 2 and backrest 3.The thigh of the composition occupant of seat cushion 2 The position that portion and buttocks are taken one's seat, the back that backrest 3 constitutes occupant are taken one's seat the position of (i.e. occupant lean on).

As shown in Figures 1 and 2, seat cushion 2 has：Soft cushion is taken one's seat for occupant；Cushion frame 2F supports soft cushion And constitute the skeleton of seat cushion 2；Connecting plate 4 is fixed on cushion frame 2F；Sliding rail 5 is connect with cushion frame 2F；And it is fixed In the bottom bracket 6 of sliding rail 5.

Cushion frame 2F has the side frame 2S extended along seat front-rear direction.Seat of the side frame 2S in cushion frame 2F The position of left and right in chair width direction is equipped with a pair.Side frame 2S by for example having carried out pressure processing to metal plates such as steel plates and Obtained pressure forming part is constituted.

Connecting plate 4 is fixed on the seat of side frame 2S rear end in the front-back direction, from the rear end of side frame 2S on seat Fang Yanshen.Aftermentioned recliner 10 is fixed in the upper end of connecting plate 4.Connecting plate 4 corresponds to the side frame of pair of right and left It is equipped with a pair to 2S.Connecting plate 4 is constituted by for example having carried out pressure forming part obtained from pressure processing to metal plates such as steel plates.

Sliding rail 5 extends along seat front-rear direction, has upper rail and lower rail.Upper rail is set as to be slided relative to lower rail Dynamic movement.It is fixed with bottom bracket 6 in lower rail, is connected with side frame 2S via link mechanism in upper rail.Sliding rail 5 corresponds to It is equipped with to the side frame 2S of pair of right and left a pair thereunder.Sliding rail 5 is made of for example metal component.Sliding rail 5 is to be used for The mechanism for sliding seat cushion 2 along seat front-rear direction, link mechanism are for making seat cushion 2 along seat upper and lower To the mechanism gone up and down.In addition, sliding equipment and link mechanism can manually or electrically drive.

The under-seat of sliding rail 5 is arranged in bottom bracket 6.Distinguish in front and back on 5 ground of sliding rail that bottom bracket 6 corresponds to pair of right and left It is respectively provided with a pair.Bottom bracket 6 is constituted by for example having carried out pressure forming part obtained from pressure processing to metal plates such as steel plates.Bottom Bracket 6 is the component for sliding rail 5 to be set to the floor of vehicle.

Backrest 3 has：Backrest cushion is taken one's seat for occupant；And back frame 3F, it supports backrest cushion and constitutes seat The skeleton of backrest 3.Backrest 3 from the rear end side on the seat front-rear direction of seat cushion 2 to seat above erect.

Back frame 3F has the side frame 3S extended along seat up and down direction.In the seat up and down direction of side frame 3S Lower end be fixed on aftermentioned recliner 10.The position of left and right of the side frame 3S on the seat width direction of back frame 3F A pair is installed.Side frame 3S is constituted by for example having carried out pressure forming part obtained from pressure processing to metal plates such as steel plates.

Recliner 10 is and in the connection for being clipped in connecting plate 4 and side frame 3S as described above by seat cushion 2 It is connected with backrest 3.Recliner 10 can adjust the backrest angle of backrest 3, by being driven by manually or electrically It moves and backrest 3 is kept with the backrest angle after adjusting.In addition, the details about recliner 10, are described below.

There is laying down mechanism 20A in back frame 3F over-assemble.Laying down mechanism 20A and above-mentioned recliner 10 are to by dorsal horn The adjusting of degree is different, and backrest 3 is made to be poured onto the degree that cannot be leaned on.Laying down mechanism 20A is typically used in passage Function.Laying down mechanism 20A is being disposed adjacently in the space above seat with the recliner 10 than recliner 10. In addition, the details about laying down mechanism 20A, are described below.

The behaviour for operating laying down mechanism 20A is equipped at the position on the top in the seat up and down direction of backrest 3 Make bar 30.Operating stick 30 is rotatably assembled in backrest 3 via such as hinge.

Referring to Fig.1, operating stick 30 is operated to arrow direction shown in figure by the institute into figure of backrest 3 by occupant Topple in the direction arrow DR1 shown.As long as here, between backrest 3 and connecting plate 4 be equipped with force application spring (not shown), and The active force for being configured to the force application spring in advance exerts a force towards the direction for toppling over backrest 3 to seat front, then by upper The operation of operating stick 30 is stated, and topples over backrest 3 forwards using the active force of the force application spring.

Here, current function is the function for the space enlargement of getting on or off the bus for making the seat rear to vehicle seat used 1 get on or off the bus, Be make as described above vehicle seat used 1 backrest 3 lean forward and usually above-mentioned sliding equipment make automobile seat in linkage Function of the chair 1 to movement in front of seat.

In addition, indicating that backrest 3 is configured at the midway of the range of collapse in front of seat from double dot dash line in Fig. 1 The state of position, in the present embodiment, backrest 3 are further fallen down to the direction arrow DR2 shown in figure, backrest 3 become state substantially Chong Die with seat cushion 2.

Pass through the operation of occupant's progress pull-up backrest 3 by the backrest 3 to lean forward is operated by operating stick 30 And it is restored to original position.

Fig. 3 is the side frame to backrest for indicating vehicle seat used recliner and laying down mechanism shown in FIG. 1 The exploded view of the package assembly of frame assembling.Fig. 4 (A) is shown along the side frame of the backrest of IVA-IVA line shown in Fig. 3 Meaning cross-sectional view, Fig. 4 (B) and Fig. 4 (C) are the schematic sectional views for indicating the other structures example of the side frame.Next, illustrating this Embodiment it is vehicle seat used in recliner and laying down mechanism detailed structure before, referring to above-mentioned Fig. 3 and Fig. 4 To illustrate the package assembly assembled to the side frame of backrest of the recliner and laying down mechanism.

As shown in figure 3, the state group that recliner 10 and laying down mechanism 20A are unitized with its major part is loaded on seat The side frame 3S of chair back 3.Specifically, recliner 10 has the ratchet 11 as its constituent part using pre-assembly, draws Guiding element 12, peripheral ring 13, rotation cam 14 (referring to Fig. 6), hinge cam 15 (referring to Fig. 6), spring 16 (referring to Fig. 6) and spring The state group of cover 17 etc. is loaded on the substrate 21 of laying down mechanism 20A, and laying down mechanism 20A is set as in the substrate 21 as its constituent part On be equally assembled with the state of the cam 23 as its constituent part, the first hook plate 24A, the second hook plate 24B and cover plate 25 etc., by The major part of this recliner 10 and laying down mechanism 20A are unitized.Here, recliner 10 and laying down mechanism 20A Major part be integrated made of the unit be equivalent to intermediate assembly.In addition, connecting plate 4 can be by the unit quilt It is assembled in recliner 10 before being assembled in side frame 3S, is thus fixed on above-mentioned recliner 10 and laying down mechanism 20A Major part be integrated made of unit, tilt adjustment can also be fixed on after the unit is assembled in side frame 3S Device 10.

As shown in Fig. 3 and Fig. 4 (A), side frame 3S has：External side wall 3Sa, outside on seat width direction and Extend along seat up and down direction；Inside wall portion 3Sb, inside on seat width direction and prolongs along seat up and down direction It stretches；Front side wall portion 3Sc, front side on seat front-rear direction and extends along seat up and down direction；And rear side wall portion 3Sd, Rear side on seat front-rear direction and extend along seat up and down direction.Side frame 3S has by external side wall as a result, The inner space 3S1 that 3Sa, inside wall portion 3Sb, front side wall portion 3Sc and rear side wall portion 3Sd are defined.

Lower end in the seat up and down direction of side frame 3S is opened to outside, and thus above-mentioned inner space 3S1 is via under this It holds and exposes to outside.Unit made of the major part of above-mentioned recliner 10 and laying down mechanism 20A are integrated by from The lower end of side frame 3S is inserted into the inner space 3S1 of side frame 3S.

Here, side frame 3S external side wall 3Sa and inside wall portion 3Sb predetermined position be equipped with through hole 3a, 3b, 3c, in the state that said units are inserted into and are positioned at inner space 3S1, to be inserted through above-mentioned through hole 3a, 3b, 3c and set The mode for being placed in the through hole of laying down mechanism 20A assembles the first pin 26A, the second pin 27A and third pin 28A respectively, thus will be upper It states unit and is assembled in side frame 3S.

When the assembling, the mainly laying down mechanism 20A in said units is incorporated in the inner space of side frame 3S 3S1, the mainly recliner 10 in said units be not incorporated in inner space 3S1 and in exposing in external shape State.In addition, the part of the lower end in the seat up and down direction of laying down mechanism 20A can not be incorporated in inner space 3S1 and Expose in outside, in addition, the part of the upper end in seat up and down direction of recliner 10 can not expose in outside and It is to be incorporated in inner space 3S1.Substrate 21 in especially laying down mechanism 20A is configured to, and supports the recliner 10 Part be not incorporated in inner space 3S1 and expose in outside.

After said units are fixed on side frame 3S, in the first pin from the part that inside wall portion 3Sb is protruded outward The release board 22 that the front group of 26A is pretended as the constituent part of laying down mechanism 20A.

By the above, constitute substrate 21 in the various constituent parts of laying down mechanism 20A, release board 22, cam 23, First hook plate 24A and the second hook plate 24B is arranged to the external side wall 3Sa than side frame 3S in seat in seat width direction Its major part is also arranged to the external side wall 3Sa than side frame 3S on the inside of seat by side, cover plate 25 in seat width direction. In addition, wherein substrate 21, cam 23, the first hook plate 24A and the second hook plate 24B is their own wholly or largely all configures The inside than side frame 3S is arranged in seat width direction about release board 22 in the inner space 3S1 of side frame 3S Wall portion 3Sb is on the inside of seat.

As shown in Fig. 4 (A), in the present embodiment, side frame 3S is made of a pressure forming part.Specifically, In present embodiment, face is supported along the touching of the above-mentioned pressure forming part bent in a manner of surrounding inner space 3S1 and implements welding Processing, thus on pressure forming part be arranged weld part 31, thus by side frame 3S be formed as section view observation under it is flat substantially The shape of square tube shape.

It can also be replaced in this, side frame 3S-2 shown in the side frame 3S-1 or Fig. 4 (C) as shown in Fig. 4 (B), By the way that two pressure forming part combinations are constituted side frame.In this case, as long as preparing to bend both ends to the same direction Made of a pair of pressure forming part, by the bending part formed at their both ends it is overlapping one another a part in a manner of group unify Soldering is implemented along its coincidence part to pressure forming part, weld part thus is set on above-mentioned a pair of of pressure forming part 31, so that side frame 3S-1,3S-2 to be formed as to the shape of substantially square tube shape flat under section view observation.In addition, at this In the case that sample constitutes side frame, can before the welding of above-mentioned a pair of of pressure forming part, by above-mentioned recliner 10 and Unit made of the major part of laying down mechanism 20A is integrated is assembled in a pressure forming part, then to cover the unit Mode another pressure forming part is welded in said one pressure forming part.

Although description is omitted herein, side frame can be made of three or more pressure forming parts, according to Situation can also part molding by extrusion constitute side frame.Alternatively, it is also possible to replace above-mentioned welding by being fastenedly connected Pressure forming part is engaged.

Fig. 5 is the outline side view of vehicle seat used recliner and laying down mechanism shown in FIG. 1, Fig. 6 be along The schematic sectional view of line VI -- VI shown in fig. 5.Fig. 7 is that cam shown in fig. 5 is bowed from inside along seat width direction View.In addition, Fig. 8 is the schematic sectional view along VIII-VIII line shown in fig. 5.Next, coming referring to above-mentioned Fig. 5 to Fig. 8 Illustrate the detailed construction of the vehicle seat used recliner and laying down mechanism of present embodiment.Here, in Fig. 5, Fig. 6 and figure In 8, the case where vehicle seat used backrest is maintained as the first state that can be leaned on is indicated.In addition, in Fig. 5, Fig. 6 and In Fig. 8, the diagram of the constituent part of a part is omitted in order to facilitate understanding and respectively.

As shown in Figures 5 and 6, in vehicle seat used 1, the side frame of the back frame 3F of the skeleton of backrest 3 is constituted Frame 3S is using can be using the rotary shaft O that extends along seat width direction in the way of rotation center rotation and by as support portion Recliner 10 and connecting plate 4 support.More specifically, it in the part on lower side of side frame 3S, is sold by above-mentioned first 26A, the second pin 27A and third pin 28A and be fixed with the substrate 21 of laying down mechanism 20A, the substrate 21 is in a manner of it can rotate It is supported by recliner 10 and connecting plate 4.Here, rotary shaft O is provided by the aftermentioned joint pin 18 of recliner 10.

Recliner 10 has：Ratchet 11, guiding piece 12, peripheral ring 13, rotation cam 14, hinge cam 15, spring 16, spring shield 17 and joint pin 18.Ratchet 11 and guiding piece 12 are all configured to substantially disc-shape, mutually can relatively revolve The state assembling turned.Peripheral ring 13 in order to avoid above-mentioned ratchet 11 and guiding piece 12 axially fall off and axially by them Sandwich holding.Ratchet 11 is fixed integrally to substrate 21 by welding etc., and guiding piece 12 is integrally fixed by welding etc. In connecting plate 4.Rotation cam 14, hinge cam 15 and spring 16 cooperate in linkage with the spinning movement of joint pin 18, thus cut The locking state and engaged state of ratchet 11 and guiding piece 12 are changed, to carry out ratchet 11 with guiding piece 12 with rotary shaft O For the change of the opposite position of rotation center.In addition, joint pin 18 with along seat width direction extend bar 19 (also together Referring to Fig. 2) connection, act the recliner for the other end being arranged in seat width direction synchronously.

Here, the predetermined position of the peripheral part in the interior sidewall surface of the inside positioned at seat width direction of ratchet 11, court Stopper pin 11a is just equipped in seat.Stopper pin 11a provides the range of collapse of backrest 3 forwards, by be set to The touching of substrate 21 is supported face 21a and is abutted to limit the further rotation of backrest 3.

In addition, the outer peripheral surface of the seat upper side of ratchet 11 is constituted in a manner of generating difference of height in seat width direction For stairstepping, the outer peripheral surface in the part is equipped with the second engaged recess portion 11c of the first engaged recess portion 11b of a pair and a pair. More specifically, being partly arranged at away from the farther position rotary shaft O, in the portion on the outside of seat in the outer peripheral surface of ratchet 11 The outer peripheral surface divided is equipped with the first engaged recess portion 11b of a pair in a manner of circumferentially arranging.In addition, in the outer peripheral surface of ratchet 11 Being partly arranged at away from rotary shaft O closer proximity on the inside of the seat, in the outer peripheral surface of the part circumferentially to arrange Mode is equipped with the second engaged recess portion 11c of a pair.Above-mentioned a pair of first engaged recess portion 11b and a pair of second engaged recess portion 11c is equivalent in the engaged part of support portion setting.

As shown in Fig. 5, Fig. 6 and Fig. 8, laying down mechanism 20A has：Substrate 21, release board 22, cam 23, the first hook plate 24A, the second hook plate 24B, cover plate 25, first sell 26A, first sleeve 26B, the second pin 27A, second sleeve 27B and third pin 28A.As described above, the major part of laying down mechanism 20A is incorporated in the inner space 3S1 of side frame 3S.

Substrate 21, cam 23, the first hook plate 24A, the second hook plate 24B and cover plate 25 are with part of it in seat width direction Upper overlapped mode laminated configuration.More specifically, substrate 21 and cover plate 25 are in seat width direction with preset distance It is opposite to configure, cam 23, the first hook plate 24A and the second hook plate 24B are configured in space between them.Wherein, cam 23 It is configured adjacently with the first hook plate 24A along seat up and down direction, the first hook plate 24A and the second hook plate 24B are with the first hook plate 24A In the side external side wall 3Sa and the second hook plate 24B is located at the mode of the inside side wall portion 3Sb and is overlapped in seat width direction and one Body.Aforesaid substrate 21, cam 23, the first hook plate 24A, the second hook plate 24B and cover plate 25 by for example to the metal plates such as steel plate into Pressure forming part obtained from pressure processing of having gone is constituted.Substrate 21 and cover plate 25 are respectively equivalent to be accommodated in the interior of side frame 3S Portion space 3S1 and the first plate-shaped member and the second plate-shaped member configured in opposite directions.

Release board 22 has the shape of the elongated plate-shaped of bending, is matched in a manner of the inside wall portion 3Sb against side frame 3S It is placed in the outside of inner space 3S1.Release board 22 is as example having carried out pressure obtained from pressure processing to metal plates such as steel plates Drip molding is constituted.The cable 29 connecting with aforesaid operations bar 30 is connected on release board 22.

First pin 26A, the second pin 27A and third pin 28A penetrate through the external side wall 3Sa of side frame 3S and interior as described above Sidewall portion 3Sb it is arranged, thus the inner space 3S1 of the first pin 26A, the second pin 27A and third pin 28A insert side frame 3S. Above-mentioned first pin 26A, the second pin 27A and third pin 28A are by the major part of recliner 10 and laying down mechanism 20A by one Unit made of change is fixed on side frame 3S, and substrate 21, cam 23, the first hook plate 24A, for including by laying down mechanism 20A Two hook plate 24B and cover plate 25 are individually assembled in side frame 3S in a manner of it can rotate or is not revolvable.

As shown in fig. 6, the first pin 26A is supported in a manner of it can rotate by side frame 3S, first pin 26A is accommodated in side The inner space 3S1 of frame 3S, and it is inserted through the first sleeve 26B engaged by weld part 33 with substrate 21.In addition, first Pin 26A is inserted through the through hole being arranged on substrate 21, cam 23 and cover plate 25 in the 3S1 of the inner space, empty inside this Between the outside of 3S1 be further inserted through the through hole being arranged on release board 22.In addition, being inserted in the through hole for being set to substrate 21 It is connected with first sleeve 26B, the first pin 26A is inserted through the through hole being arranged on the base plate (21 via first sleeve 26B.

Here, as shown in fig. 7, the orthogonal with the axial direction of through hole 23b of the through hole 23b being set on cam 23 is put down Face shape be configured to non-positive round shape (specifically, one group of opposite side be in outward bending bloat it is substantially rectangular Shape).On the other hand, as shown in Figures 2 and 6, the part 26a for being inserted through through hole 23b of the first pin 26A be configured to this The consistent shape of flat shape of the through hole 23b of the axial direction of one pin 26A orthogonal flat shape and cam 23.Cam as a result, 23 engage with the first pin 26A, rotate jointly along with the rotation of the first pin 26A with first pin 26A.

In addition, release board 22 is engaged in the first pin 26A by weld part 32.Release board 22 is fixed on the first pin as a result, 26A is rotated jointly along with the rotation of the first pin 26A with first pin 26A.

In contrast, the first pin 26A is set relative to a pair of of the through hole 3a being arranged on side frame 3S and on cover plate 25 The through hole and first sleeve 26B set and carry out clearance fit.Side frame 3S as a result, cover plate 25 and first sleeve 26B be not with One pin 26A is rotated jointly, the first pin 26A and above-mentioned component sliding contact and be supported in a manner of it can rotate.

In addition, as shown in fig. 7, on the surface for the cam 23 for being located at the inner sidewall portion side 3Sb, along the week of through hole 23b It is circular recess portion 23c that the mode of edge, which is equipped with overlook view,.One be inserted into recess portion 23c in the axial direction of first sleeve 26B End.The sliding that the inner peripheral surface for being set to the recess portion 23c of cam 23 as a result, is configured to carry out sliding contact with first sleeve 26B connects Contacting surface, the outer peripheral surface for being inserted in the first sleeve 26B of the part of recess portion 23c are configured to carry out the cunning of sliding contact with cam 23 Dynamic contact surface.One end in the axial direction of the recess portion 23c and first sleeve 26B of above-mentioned cam 23 is in recliner 10 and to fall Unit made of the major part of mechanism 20A is integrated to side frame 3S assemble before in the state of, be used in cam 23 The position of positioning.

As shown in figure 8, the front end of the second pin 27A is engaged in external side wall 3Sa by weld part 34, thus second sells 27A is supported in side frame 3S in a manner of not revolvable.Second pin 27A is inserted through the inner space 3S1 for being accommodated in side frame 3S In second sleeve 27B.In addition, the second pin 27A is inserted through in substrate 21, the first hook plate 24A, the in the 3S1 of the inner space The through hole being arranged on two hook plate 24B and cover plate 25.In addition, be set to substrate 21, the first hook plate 24A, the second hook plate 24B and All insert has second sleeve 27B, the second pin 27A to be inserted through these via second sleeve 27B and pass through in the through hole of cover plate 25 Through-hole.

Here, second sleeve 27B is relative between the through hole progress being arranged on the first hook plate 24A and the second hook plate 24B Gap cooperation.The first hook plate 24A and the second hook plate 24B and second sleeve 27B carry out sliding contact and the side can rotate as a result, Formula is supported.

Referring to Fig. 6, the front end of third pin 28A is engaged in external side wall 3Sa by welding etc., thus third pin 28A with Not revolvable mode is supported in side frame 3S.Third pin 28A is inserted through in the inner space 3S1 of side frame 3S in substrate 21 And the through hole being arranged on cover plate 25.The third pin 28A is for positioning the substrate 21 and cover plate 25 that are accommodated in inner space 3S1 And it is fixed on side frame 3S.

As shown in figure 5, being connected with the cable 29 connecting with operating stick 30 as described above on release board 22.Release board 22 It is configured to rotate using the first connecting shaft O1 as defined in the first pin 26A as rotation center.

Cam 23 is configured to rotate using the first connecting shaft O1 as defined in the first pin 26A as rotation center.Convex The engaging that lower end on the seat width direction of wheel 23 is equipped with predetermined shape releases protrusion 23a.It is to use that the engaging, which releases protrusion 23a, In the position for pressing the first hook plate 24A to predetermined direction.

Release board 22 is rotated in the case where being drawn by cable 29.Cam 23 is rotated jointly with release board 22 as a result, The engaging for being set to cam 23 releases protrusion 23a and moves along direction of rotation.Above-mentioned release board 22 and cam 23 are equivalent to releasing To the releasing mechanism of the holding of backrest 3, release board 22 therein is equivalent to outer by receiving to come from aftermentioned holding mechanism The input in portion and rotate be entered component, cam 23 is equivalent to be revolved by receiving the transmitting from the power for being entered component The component turned.

First hook plate 24A and the second hook plate 24B is configured to the second connecting shaft O2 as defined in the second pin 27A as rotation Turn center and rotates.As described above, the first hook plate 24A and the second hook plate 24B are integrated, therefore it is with second connecting shaft O2 Rotation center and rotate jointly.

The engaging that upper end in the seat up and down direction of the first hook plate 24A is equipped with predetermined shape releases recess portion 24a.The card Closing and releasing recess portion 24a is the position that the engaging for being arranged on above-mentioned cam 23 releases protrusion 23a pressing.In addition, first Lower end in the seat up and down direction of hook plate 24A is equipped with the first engaging protrusion 24b of a pair.The first engaging protrusion 24b of a pair along The outer peripheral surface of first hook plate 24A is arranged.First engaging protrusion of a pair 24b is can be with setting in above-mentioned recliner The position of the engaged recess portion 11b of a pair first engaging on 10 ratchet 11.

Second hook plate 24B has the shape bigger than the first hook plate 24A when observing along seat width direction.In second hook Lower end in the seat up and down direction of plate 24B is equipped with the second engaging protrusion 24c of a pair.The second engaging protrusion 24c of a pair is along The outer peripheral surface of two hook plate 24B is arranged.Second engaging protrusion of a pair 24c is can be with setting in above-mentioned recliner 10 Ratchet 11 on the engaged recess portion 11c of a pair second engaging position.

First hook plate 24A and the second hook plate 24B are equivalent to the guarantor that backrest 3 is remained to the first state that can be leaned on The engaging part of mechanism is held, above-mentioned a pair of first engaging protrusion 24b and the second engaging protrusion 24c of a pair are equivalent to setting and are engaging Holding section on component.

Here, as holding section a pair the first engaging protrusion 24b and the second engaging protrusion 24c of a pair with as by card Under the fastening state that the engaged recess portion 11b of a pair first and the engaged recess portion 11c of a pair second in conjunction portion engage, laying down mechanism 20A is in the state engaged with recliner 10, and from there through the posture for keeping backrest 3, being maintained above-mentioned can be leaned on The first state leaned on.

Fig. 9 be indicate present embodiment it is vehicle seat used in relieve laying down mechanism with recliner engaging The outline side view of state, Figure 10 are the approximate stereograms for the state for indicating that backrest was fallen.Next, referring to above-mentioned figure 9 and Figure 10 and above-mentioned Fig. 5 illustrates the vehicle seat used movement of falling of present embodiment.Here, showing in Fig. 9 and Figure 10 The second state that the holding of vehicle seat used backrest is released from out.In addition, in Fig. 9 and Figure 10, in order to facilitate understanding And the diagram of the constituent part of a part is omitted respectively.

Under the state shown in fig. 5, in the case where occupant operates operating stick 30, as shown in figure 9, passing through cable 29 Release board 22 rotates clockwise under side view observation using the first connecting shaft O1 as rotation center.Therewith, cam 23 also connects with first Spindle O1 is that rotation center rotates clockwise under side view observation, and the engaging of cam 23 releases protrusion 23a's and the first hook plate 24A Engaging releases recess portion 24a contact and releases recess portion 24a to engaging and press.

Releasing the engaged releasing protrusion 23a pressing of recess portion 24a by engaging makes the first hook plate 24A and the second hook plate 24B It is rotated counterclockwise under side view observation using the second connecting shaft O2 as rotation center, the first engaging protrusion of a pair of the first hook plate 24A 24b is detached from the engaged recess portion 11b of a pair first of ratchet 11, and a pair the second engaging protrusion 24c of the second hook plate 24B is detached from The engaged recess portion 11c of a pair second of ratchet 11.

Although releasing recliner 10 with the operations linkage of operating stick 30 at this point, description is omitted Locking, thus backrest 3 become also by as support portion recliner 10 and connecting plate 4 relieve its keep shape State, backrest 3 can be rotated using rotary shaft O as rotation center.

That is, being transformed into a pair the first engaging protrusion 24b and a pair of the as holding section by the operation of operating stick 30 Two engaging protrusion 24c not with the engaged recess portion 11b of a pair first and a pair of second engaged recess portion 11c card as engaged part The non-engagement state closed, hereby it is achieved that the state that laying down mechanism 20A does not engage with recliner 10, and inclination is adjusted in turn The locking of section device 10 is also released from, and realizes the second state that backrest 3 can topple over.

Therefore, as shown in Figure 10, in the case where above-mentioned force application spring is equipped between backrest 3 and connecting plate 4, pass through The active force of the force application spring and backrest 3 is toppled over forwards, in the case where the not set force application spring, pass through occupant couple The operation of backrest 3 and backrest 3 is toppled over forwards.It vehicle seat used 1 is changed to backrest 3 as a result, and can not lean on Degree state of falling.

Here, one of the method as the locking for being configured to release recliner 10 with the operations linkage of operating stick 30 Example, it is contemplated that following situation：Using cable etc. by the release board 22 of laying down mechanism 20A and joint pin with recliner 10 The operating stick connection of the recliner 10 of 18 connections, thus operates recliner 10 with the operations linkage of operating stick 30 Joint pin 18 rotate.

In addition, cable 29 is released from the traction of release board 22 in the case where occupant relieves the operation of operating stick 30, Original position is restored to by the release boards such as force application spring (not shown) 22.Cam 23 also returns to original position as a result, Set, at this point, the other parts that the engaging of cam 23 releases the engaging releasing recess portion 24a of protrusion 23a and the first hook plate 24A contact and The part is pressed.As a result, returning into one as holding section by the rotation process of the backrest 3 of occupant To the first engaging protrusion 24b and the second engaging protrusion 24c of a pair with as engaged part the engaged recess portion 11b of a pair first and The fastening state of the engaged recess portion 11c engaging of a pair second, is changed into above-mentioned first state.

Figure 11 to Figure 14 is the schematic sectional view for illustrating the vehicle seat used manufacturing method of present embodiment.With Under, the vehicle seat used manufacturing method of present embodiment is described in detail referring to above-mentioned Figure 11 to Figure 14 and above-mentioned Fig. 3.Separately Outside, in Figure 11 into Figure 14, near the first connecting shaft O1 in manufacturing process (that is, near the part of the first pin of configuration 26A) Section is expressed as (A), the section of the second connecting shaft O2 in manufacturing process nearby (that is, near the part of the second pin of configuration 27A) It is expressed as (B).

Referring to Fig. 3, as described above, making recliner 10 in vehicle seat used the 1 of present embodiment and putting After unit made of the major part for the 20A of falling mechanism is integrated, it is inserted into the inner space 3S1 of side frame 3S, so The unit is fixed on side frame 3S using the first pin 26A, the second pin 27A and third pin 28A afterwards.

More specifically, as shown in Figure 11 (A), substrate 21 is being set to firstly, first sleeve 26B is inserted into and is welded in On through hole in confession first sell 26A insertion through hole, thus first sleeve 26B is fixed on substrate by weld part 31 21.Second sleeve 27B is fixed in the through hole being set on substrate 21 as shown in Figure 11 (B) in addition, corresponding to this Confession second sell 27A insertion through hole.The fixation can also be replaced in this and be welded suitably with indentation Deng.

Next, stacking gradually the second hook plate 24B, the first hook plate 24A, cam 23 and cover plate 25 on the substrate 21.This When, it is inserted in about the first hook plate 24A and the second hook plate 24B, second sleeve 27B in above-mentioned first hook plate 24A and the second hook plate The through hole being arranged on 24B, about cam 23, first sleeve 26B is inserted in the through hole 23b being arranged on the cam 23 and recessed Portion 23c.In addition, about cover plate 25, with the confession first in the through hole that is set on the cover plate 25 sell the through hole of 26A insertion with The mode of the through hole 23b overlapping of cam 23 is positioningly configured, and second sleeve 27B is inserted and fixed in being arranged The through hole of 27A insertion is sold in confession second in the through hole on the cover plate 25.The fixation can be suitably with indentation, can also It is welded etc. with being replaced in this.In addition, at this point, about recliner 10, and to the recliner 10 relative to Substrate 21 is positioningly configured, and ratchet therein 11 is installed between the second hook plate 24B and cover plate 25.

Substrate 21, cam 23, the first hook plate 24A, the second hook plate 24B, cover plate 25, first sleeve are made by above-mentioned 26B, second sleeve 27B and recliner 10 have been mutually located and the unit in the state of integration.Here, the unit phase When in intermediate assembly.

Next, being inserted into recliner 10 to the inner space 3S1 of side frame 3S as shown in Figure 12 (A) and Figure 12 (B) And the major part of laying down mechanism 20A be integrated made of unit.At this point, so that the hollow portion and setting of first sleeve 26B Hollow portion in through hole 3a overlapping and second sleeve 27B on side frame 3S and the through hole 3b that is set on side frame 3S The mode of overlapping is by the cell location in side frame 3S.

Next, the first pin 26A is inserted in from the side external side wall 3Sa of side frame 3S in side frame as shown in Figure 13 (A) The through hole 3a being arranged on 3S.At this point, first sells 26A also to penetrate through the machine that fell for the inner space 3S1 for being inserted in side frame 3S The mode of structure 20A is inserted into, and the first pin 26A is inserted in first sleeve 26B in a manner of it can slide.In addition, corresponding to this, such as scheme Shown in 13 (B), the second pin 27A is inserted in the through hole 3b being arranged on side frame 3S from the inside side wall portion 3Sb of side frame 3S. At this point, the second pin 27A is inserted into a manner of also penetrating through the laying down mechanism 20A for being inserted in the inner space 3S1 of side frame 3S, second Pin 27A is inserted into second sleeve 27B.

Next, being more than the inside wall portion 3Sb of side frame 3S and the first pin protruding to the outside as shown in Figure 13 (A) The front end of 26A assembles release board 22.At this point, the front end of the first pin 26A is inserted in the through hole being arranged on release board 22, thus Release board 22 becomes the state for being close proximity to the inside wall portion 3Sb of side frame 3S.

Next, being welded in figure by the position that appended drawing reference W is indicated as shown in Figure 14 (A) and Figure 14 (B). Specifically, the external side wall 3Sa for being welded with release board 22 to the front end of the first pin 26A, and will being more than side frame 3S The front end of second pin 27A protruding to the outside is welded in external side wall 3Sa.Release board 22 passes through 32 (reference of weld part as a result, It Fig. 6) is fixed on the first pin 26A, and the second pin 27A is fixed on side frame 3S by weld part 34 (referring to Fig. 8).

Recliner 10 and laying down mechanism 20A are assembled in side frame 3S and via above-mentioned a series of step. That is, being set as will be convex using first sleeve 26B and second sleeve 27B in the vehicle seat used manufacturing method of present embodiment Wheel the 23, first hook plate 24A and the second hook plate 24B is pre-assembled with the state of substrate 21 and cover plate 25, and then is inserted into side The inner space 3S1 of frame 3S is fixed using the first pin 26A and the second pin 27A on this basis.

Here, as described above, being set as using substrate 21, cover plate 25, first sleeve 26B and second sleeve 27B come by cam 23, the structure of the first hook plate 24A and the second hook plate 24B stacking, thus in aforesaid substrate 21, cover plate 25, first sleeve 26B and the Cam 23, the first hook plate 24A and the second hook plate 24B is set to rest on position appropriate on two sleeve 27B.It therefore, can be by this It stops to realize the positioning of above-mentioned cam 23, the first hook plate 24A and the second hook plate 24B in seat width direction, and also can Above-mentioned cam 23, the first hook plate 24A and the second hook plate 24B in the face orthogonal with the seat width direction on direction are carried out simultaneously Positioning.In addition, from the viewpoint of the stop of the viewpoint and above-mentioned positioning that are easy to be assembled, preferably in side frame The gap of predefined size is equipped between the inside wall portion 3Sb and substrate 21 of 3S.

In vehicle seat used the 1 of present embodiment described above, as described above, constituting the various of laying down mechanism 20A Substrate 21, cam 23, the first hook plate 24A, the second hook plate 24B and cover plate 25 in constituent part are mainly configured at side frame 3S's Inner space 3S1.Therefore, for realizing composition in various constituent parts needed for function of falling, possessive volume is bigger Part be no longer arranged in seat width direction than backrest 3 side frame 3S in the outer part, therefore it is wide to can be realized seat Spend narrowization on direction.

In addition, in vehicle seat used the 1 of present embodiment, as described above, constituting the various compositions zero of laying down mechanism 20A Substrate 21, cam 23, the first hook plate 24A, the second hook plate 24B and cover plate 25 in part are all accommodated in the inner space of side frame 3S 3S1.Therefore, it for realizing constituent part in various constituent parts needed for function of falling, possessive volume is bigger, is present No longer be arranged in chair width direction than backrest 3 side frame 3S in the inner part, therefore above-mentioned constituent part will not be with occupant Seated position it is close or overlap, can be realized in the case where avoiding taking sense from being deteriorated narrow on seat width direction Change.

In addition, in vehicle seat used the 1 of present embodiment, as described above, the side frame 3S with inner space 3S1 External side wall 3Sa and inside wall portion 3Sb is that space 3S1 is connected by the first pin 26A, the second pin 27A and third pin 28A inside it The structure connect, therefore the rigidity of side frame 3S improves, and cam 23, the first hook plate 24A and the second hook plate 24B are in seat width It is clipped on direction by the external side wall 3Sa of side frame 3S and inside wall portion 3Sb, therefore above-mentioned cam 23, the first hook plate 24A and The rigidity (especially for the patience of torsion) of two hook plate 24B also improves.

Here, in the case where being set as vehicle seat used the 1 of present embodiment, side frame 3S, laying down mechanism 20A, inclination Adjuster 10 and connecting plate 4 are more linearly configured along seat up and down direction.Therefore, even if to vehicle seat used 1 edge In the case that up and down direction is applied with load, be also able to suppress vehicle seat used 1 skeleton generation displacement, and can be more Efficiently the load is discharged to outside.

In addition, in vehicle seat used the 1 of present embodiment, as described above, release board 22 is matched in seat width direction It is placed in the outside (that is, in seat width direction in the inner part than side frame 3S) of side frame 3S, therefore by being configured at side frame Input medium (in addition such as aforesaid operations bar 30 is replaced in this sometimes and the drive motor etc. that is arranged) input of the outside of 3S Power via release board 22 and first pin 26A to the inner space 3S1 of side frame 3S import, can be efficiently transfer to store In the cam 23 of inner space 3S1, can avoiding device structure is complicated change in the case where it is easily real in simple structure Existing power transmitting.

On the other hand, in the vehicle seat used manufacturing method of present embodiment, as described above, being set as using first set Cam 23, the first hook plate 24A and the second hook plate 24B are pre-assembled with substrate 21 and cover plate 25 by cylinder 26B and second sleeve 27B State, and then be inserted into the inner space 3S1 in side frame 3S, on this basis by the first pin 26A and the second pin 27A come It is fixed.Therefore, it can will occupy body by easy operation for realizing its in various constituent parts needed for function of falling The bigger constituent part of product is configured at the inner space 3S1 of side frame 3S, can be with the result is that realize the facilitation of manufacture Low cost, which provides, has the vehicle seat used of function that fell.

Therefore, by being set as vehicle seat used the 1 of present embodiment and the vehicle seat used manufacturer of present embodiment Method can become following vehicle seat used and vehicle seat used manufacturing method：Have be poured onto backrest 3 cannot The function of falling of the degree of dependence, and can be realized narrowization on seat width direction, and can be easily manufactured.

Figure 15 is the schematic sectional view for indicating the other structures example near the first pin.Hereinafter, on illustrating referring to the Figure 15 State the other structures example near the first vehicle seat used pin of embodiment.

In vehicle seat used the 1 of above embodiment, it is arranged to compare side frame in seat width direction with release board 22 The inside wall portion 3Sb of frame 3S is illustrated for the laying down mechanism 20A on the inside of seat, but as shown in figure 15, it can also The falling on the outside of seat of the external side wall 3Sa than side frame 3S is arranged in seat width direction to be set as the release board 22 Mechanism 20B.In this case, the direction of insertion that the first pin 26A is inserted into side frame 3S can also be changed.

Even if in this case, the first pin 26A is also supported in a manner of it can rotate by side frame 3S, first pin 26A It is accommodated in the inner space 3S1 of side frame 3S, and is inserted through the first sleeve for being engaged in substrate 21 by weld part 33 26B.In addition, the first pin 26A is inserted through the perforation being arranged on substrate 21, cam 23 and cover plate 25 in the 3S1 of the inner space Hole, in the inner space, the outside of 3S1 is further inserted through the through hole being arranged on release board 22.In addition, first sleeve 26B It is inserted through the through hole being arranged on the base plate (21, the first pin 26A is inserted through and is arranged on the base plate (21 via first sleeve 26B Through hole.

Here, the flat shape orthogonal with the axial direction of through hole 23b for being set to the through hole 23b of cam 23 is configured to Non- positive round shape.On the other hand, the part 26a for being inserted through through hole 23b of the first pin 26A is configured to first pin 26A's The consistent shape of flat shape of the through hole 23b of axial orthogonal flat shape and cam 23.Cam 23 is engaged in as a result, One pin 26A is rotated jointly along with the rotation of the first pin 26A with first pin 26A.

In contrast, the first pin 26A is set relative to a pair of of the through hole 3a being arranged on side frame 3S and on cover plate 25 The through hole and first sleeve 26B set and carry out clearance fit.Side frame 3S, cover plate 25 and first sleeve 26B be not with as a result, One pin 26A is rotated jointly, first pin 26A and these component sliding contacts and be supported in a manner of it can rotate.

In addition, being set in a manner of along the periphery of through hole 23b on the surface for the cam 23 for being located at the inner sidewall portion side 3Sb Having overlook view is circular recess portion 23c.One end in the axial direction of first sleeve 26B is inserted into recess portion 23c.Above-mentioned cam One end in the axial direction of 23 recess portion 23c and first sleeve 26B is the major part in recliner 10 and laying down mechanism 20A Unit made of being integrated to side frame 3S assemble before in the state of, be used in the position of the positioning of cam 23.

Although description is omitted herein, even if in the automobile seat for having the laying down mechanism 20B constituted in this way In the case where chair, it can also be made by the manufacturing method of the vehicle seat used manufacturing method in accordance with above embodiment It makes.That is, being set as cam 23, the first hook plate 24A and preparatory group of the second hook plate 24B using first sleeve 26B and second sleeve 27B State loaded on substrate 21 and cover plate 25, and then be inserted into the inner space 3S1 in side frame 3S, on this basis by the One pin 26A and the second pin 27A are fixed, and thus, it is possible to manufacture to it.

Even if in this case of composition, can also obtain effect identical with the effect illustrated in the above-described embodiment Fruit.

Above-mentioned content of this disclosure is concluded, as described below.

Seat for vehicle based on the disclosure has：Support portion, to backrest with can be along seat width The mode that the rotary shaft that direction extends rotates for rotation center is supported；Back frame constitutes the bone of above-mentioned backrest Frame；Above-mentioned backrest is remained the first state that can be leaned on by holding mechanism；And releasing mechanism, release above-mentioned holding machine Holding of the structure to above-mentioned backrest, and above-mentioned backrest is changed to the second state that can be toppled over.Above-mentioned back frame Side frame with the one end being located on seat width direction, above-mentioned side frame have：External side wall is located at seat width side Upward outside and extend along seat up and down direction；Inside wall portion, inside on seat width direction and along seat Up and down direction extends；Front side wall portion, front side on seat front-rear direction and extends along seat up and down direction；And rear wall Portion, rear side on seat front-rear direction and extends along seat up and down direction, and thus above-mentioned side frame has by above-mentioned outer The inner space that sidewall portion, above-mentioned inside wall portion, above-mentioned front side wall portion and above-mentioned rear side wall portion define.Above-mentioned holding mechanism has Engaging part, above-mentioned engaging part are equipped with the holding section that can be engaged with the engaged part for being set to above-mentioned support portion, above-mentioned releasing Mechanism has：It is entered component, is rotated by receiving from external input；And cam, receive from above-mentioned defeated Enter the power transmitting of component and is rotated.Above-mentioned engaging part is rotated and being pressed by above-mentioned cam, is thus switched The fastening state engaged for above-mentioned holding section with above-mentioned engaged part and above-mentioned holding section do not engage with above-mentioned engaged part non- Fastening state.The above-mentioned seat for vehicle based on the disclosure is also equipped with the first plate-shaped member and the second plate-shaped member, above-mentioned First plate-shaped member and above-mentioned second plate-shaped member configures in opposite directions along seat width direction and at least the above first plate-like portion Part and above-mentioned respective a part of second plate-shaped member are accommodated in above-mentioned inner space, and above-mentioned first plate-shaped member is than above-mentioned second Plate-shaped member is configured close to above-mentioned inside wall portion.It is above-mentioned to be entered component and above-mentioned cam is configured to, along seat The first pin that width direction extends rotates jointly for rotation center, and above-mentioned engaging part is configured to along seat width The second pin that direction extends rotates for rotation center.Above-mentioned first pin and above-mentioned second pin penetrate through above-mentioned inside wall portion, above-mentioned First plate-shaped member, above-mentioned second plate-shaped member and above-mentioned external side wall it is arranged.It is above-mentioned that be entered component above-mentioned to be configured at The state of the outside of inner space and by it is above-mentioned first pin support.Above-mentioned cam is by above-mentioned first plate-shaped member and above-mentioned second State that plate-shaped member clips and supported by above-mentioned first pin, and above-mentioned engaging part with by above-mentioned first plate-shaped member and on The state that the second plate-shaped member clips is stated to be supported by above-mentioned second pin.The above-mentioned seat for vehicle based on the disclosure also has It is standby：First sleeve has and carries out the sliding contact surface of sliding contact with above-mentioned cam and be fixed on above-mentioned first plate-shaped member； And second sleeve, it is fixed on above-mentioned first plate-shaped member and above-mentioned second plate-shaped member, side of above-mentioned first pin can slide Formula is inserted in above-mentioned first sleeve, and above-mentioned second pin is inserted in above-mentioned second sleeve.

With this configuration, in order to realize that in various constituent parts needed for function of falling, possessive volume is bigger Cam and engaging part are mainly configured at the inner space of the side frame in seat width direction, rather than compare backrest Side frame in the outer part, therefore can be realized narrowization on seat width direction.In addition, with this configuration, becoming use Cam and engaging part are pre-assembled with the state of the first plate-shaped member and the second plate-shaped member by first sleeve and second sleeve, And then be inserted into the inner space of side frame, on this basis it is possible to be fixed using the first pin and the second pin, it can Cam and engaging part are configured to the inner space of side frame using easy operation, the result is that being also able to achieve being easy for manufacture Change.

It in the above-mentioned seat for vehicle based on the disclosure, can be, for the above-mentioned cam of above-mentioned first pin insert Through hole shape be non-positive round shape, and it is above-mentioned first pin the part for being inserted through above-mentioned through hole shape be with it is upper State the consistent shape of shape of the above-mentioned through hole of cam.

With this configuration, it can make to be entered component via the first pin and cam rotates jointly.Especially becoming Cam and engaging part are pre-assembled with the first plate-shaped member and the second plate-shaped member using first sleeve and second sleeve State, and then be inserted into the inner space of side frame, the feelings being fixed on this basis using the first pin and the second pin Under condition, the cam of the inside for being accommodated in side frame also can be by first pin connection at can although the first pin of insertion afterwards It rotates jointly, therefore can be easily configured as that can make to be entered component via first pin and be revolved jointly with cam with cam Turn.

It in the above-mentioned seat for vehicle based on the disclosure, can be, pass through the above-mentioned through hole in above-mentioned cam Periphery setting recess portion and by the inner peripheral surface of above-mentioned recess portion define with above-mentioned first sleeve carry out sliding contact sliding contact surface, And one end in the axial direction of above-mentioned first sleeve is inserted in above-mentioned recess portion.

With this configuration, cam and engaging part are pre-assembled with the using first sleeve and second sleeve becoming The state of one plate-shaped member and the second plate-shaped member, and then be inserted into the inner space of side frame, it utilizes on this basis In the case that first pin and the second pin are fixed, can stage before being inserted into side frame, using first sleeve to convex Wheel is positioned, thus can by easy operation by cam arrangement in the inner space of side frame.

In the above-mentioned seat for vehicle based on the disclosure, above-mentioned support portion be can have：Cushion frame constitutes seat The skeleton of seat cushion；And recliner, above-mentioned cushion frame and above-mentioned back frame are connected, in this case, above-mentioned quilt Holding section can be set to above-mentioned recliner.

With this configuration, the traffic for having fell function and angle modulation function together can be formed as by simple structure Tool seat.

By manufacturing seat for vehicle according to the manufacturing method, being set as will be convex using first sleeve and second sleeve Wheel and engaging part are pre-assembled with the state of the first plate-shaped member and the second plate-shaped member, and then are inserted into side frame Inner space is fixed using the first pin and the second pin on this basis, thus can by easy operation by cam and Engaging part is configured at the inner space of side frame, is able to achieve the facilitation of manufacture.

Embodiments of the present invention are illustrated, but are contemplated that embodiment of the present disclosure in all respects Merely illustrative rather than restriction effect.The scope of the present invention is indicated by claims, and includes to be equal with claims Whole changes in the meaning and range.

Claims

1. a kind of seat for vehicle, has：

Support portion, the side to backrest can be rotated using the rotary shaft extended along seat width direction as rotation center Formula is supported；

Back frame constitutes the skeleton of the backrest；

The backrest is remained the first state that can be leaned on by holding mechanism；And

Releasing mechanism releases holding of the holding mechanism to the backrest, and the backrest is changed to can The second state toppled over,

The back frame has the side frame for the one end being located on seat width direction,

The side frame has：External side wall, outside on seat width direction and extends along seat up and down direction；It is interior Sidewall portion, inside on seat width direction and extends along seat up and down direction；Front side wall portion is located at seat front and back Upward front side and extend along seat up and down direction；And rear side wall portion, rear side on seat front-rear direction and along seat Chair up and down direction extends, and thus the side frame has by the external side wall, the inside wall portion, the front side wall portion and institute The inner space that rear side wall portion defines is stated,

The holding mechanism has engaging part, and the engaging part is equipped with can be with the engaged part card set on the support portion The holding section of conjunction,

The releasing mechanism has：It is entered component, is rotated by receiving from external input；And cam, receive It is rotated from the power transmitting for being entered component,

The engaging part is pressed and rotated by the cam, is thus switched to the holding section and the engaged part card The non-engagement state that the fastening state of conjunction and the holding section do not engage with the engaged part,

The seat for vehicle is also equipped with the first plate-shaped member and the second plate-shaped member, first plate-shaped member and described Second plate-shaped member configures in opposite directions along seat width direction and at least described first plate-shaped member and second plate-like portion The respective a part of part is incorporated in the inner space,

First plate-shaped member is configured than second plate-shaped member close to the inside wall portion,

It is described to be entered component and the cam is configured to, it can be with the first pin for extending along seat width direction in rotation The heart and rotate jointly,

The engaging part is configured to so that the second pin extended along seat width direction is rotation center and is rotated,

First pin and second pin penetrate through the inside wall portion, first plate-shaped member, second plate-shaped member And the external side wall be arranged,

It is described to be entered component to be configured at the state of the outside of the inner space and supported by first pin,

The cam is with the state that is clipped by first plate-shaped member and second plate-shaped member and by the first pin branch Support,

The engaging part is with the state that is clipped by first plate-shaped member and second plate-shaped member and by described second Pin support,

The seat for vehicle is also equipped with：First sleeve has the sliding contact surface that sliding contact is carried out with the cam And it is fixed on first plate-shaped member；And second sleeve, it is fixed on first plate-shaped member and second plate-like portion Part,

First pin is inserted in the first sleeve in a manner of it can slide,

Second pin is inserted in the second sleeve.

2. seat for vehicle according to claim 1, wherein

Shape for the through hole of the cam of the first pin insert is non-positive round shape,

The shape of the part for being inserted through the through hole of first pin is the shape one with the through hole of the cam The shape of cause.

3. seat for vehicle according to claim 2, wherein

Recess portion is set by the periphery of the through hole in the cam, and is defined and described the by the inner peripheral surface of the recess portion One sleeve carries out the sliding contact surface of sliding contact,

One end in the axial direction of the first sleeve is inserted in the recess portion.

4. seat for vehicle described in any one of claim 1 to 3, wherein

The support portion has：Cushion frame constitutes the skeleton of seat cushion；And recliner, by the cushion frame and The back frame connection,

The engaged part is set to the recliner.

5. a kind of manufacturing method of seat for vehicle is seat for vehicle according to any one of claims 1 to 4 Manufacturing method, the manufacturing method of the seat for vehicle has following step：

The first sleeve is embedded in first plate-shaped member and the second sleeve is fixed on first plate-like portion Part；

The cam is embedded in the first sleeve for being embedded in first plate-shaped member and to being fixed on first plate The second sleeve of shape component is embedded in the engaging part, and thus the cam and the engaging part are positioned and be configured at First plate-shaped member；

The cam and the engaging part to be sandwiched in the side between second plate-shaped member and first plate-shaped member Formula, it is to first sleeve insertion second plate-shaped member for being embedded in first plate-shaped member and described to being fixed on Fixed second plate-shaped member of the second sleeve of first plate-shaped member, thus produces intermediate assembly；

The intermediate assembly is inserted into the side frame and is positioned；

First pin is inserted in the first sleeve in a manner of it can slide, and second pin is inserted in described Second sleeve；And

By it is described be entered component be fixed on be inserted in the first sleeve it is described first pin, and will it is described second pin fixation In the side frame.