阅读说明：本技术 交通工具用座椅 (Seat for vehicle ) 是由 冈本尚也 清水寿得 于 2019-05-21 设计创作，主要内容包括：一种交通工具用座椅,其具有可动部、第1弹簧、第2弹簧、以及预紧装置。第1弹簧能够产生用于使朝第1方向位移的可动部朝中立位置位移的弹力,第2弹簧能够产生用于使朝第2方向位移的可动部朝中立位置位移的弹力。预紧装置能够改变由第1弹簧作用于处于中立位置的可动部的弹力和由第2弹簧作用于处于中立位置的可动部的弹力中的至少一方的弹力。(A kind of seat for vehicle, with movable part, the 1st spring, the 2nd spring and pre-tightening apparatus.1st spring can generate the elastic force for being displaced the movable part being displaced towards the 1st direction towards neutral position, and the 2nd spring can generate the elastic force for being displaced the movable part being displaced towards the 2nd direction towards neutral position.Pre-tightening apparatus can change the elastic force of the movable part in neutral position is acted on by the 1st spring and the movable part in neutral position is acted on by the 2nd spring elastic force at least one party elastic force.)

1. a kind of seat for vehicle, to be installed into the vehicles, the seat for vehicle is characterized in that, tool Have:

Movable part, the movable part are set on at least one party in backrest and Chain cushion, and can be relative to seat Frame displacement；

1st spring, the 1st spring can be generated when the movable part is displaced towards the 1st direction for making the movable of the displacement The elastic force that portion is displaced towards prespecified neutral position；

1st linking part, the 1st linking part are configured to make the 1st spring when the movable part is displaced towards the 1st direction The 1st end be displaced together with the movable part；

2nd spring, the 2nd spring can be generated when the movable part is displaced towards the 2nd direction for being different from the 1st direction Elastic force for being displaced the movable part of the displacement towards the neutral position；

2nd linking part, the 2nd linking part are configured to make the 2nd spring when the movable part is displaced towards the 2nd direction The 1st end be displaced together with the movable part；And

Pre-tightening apparatus, the pre-tightening apparatus can change when the movable part is in the neutral position by the 1st spring It acts on the elastic force of the movable part and this is acted on movably by the 2nd spring when the movable part is in the neutral position The elastic force of at least one party in the elastic force in portion, and

The pre-tightening apparatus has the 1st adjusting nut, the 2nd adjusting nut, the 1st threaded rod, the 2nd threaded rod and actuator,

1st adjusting nut is locked to the 2nd end of the 1st spring；

2nd adjusting nut is locked to the 2nd end of the 2nd spring；

1st threaded rod is inserted into the 1st adjusting nut；

2nd threaded rod is inserted into the 2nd adjusting nut；

The actuator is configured to, and revolves the threaded rod of the 1st threaded rod and at least one party in the 2nd threaded rod Turn.

2. seat for vehicle according to claim 1 comprising:

Displacement component, the displacement component are integrally displaced with the movable part；

1st locking pin, the 1st locking pin are integrally displaced with the 1st adjusting nut；And

2nd locking pin, the 2nd locking pin are integrally displaced with the 2nd adjusting nut,

The displacement component is provided with the 1st hole and the 2nd hole,

1st locking pin is inserted into the 1st hole, and the 1st locking pin can be in the 1st hole along with the described 1st The parallel direction displacement of the axis direction of threaded rod,

2nd locking pin is inserted into the 2nd hole, and the 2nd locking pin can be in the 2nd hole along with the described 2nd The parallel direction displacement of the axis direction of threaded rod,

The pre-tightening apparatus can play lock function, when playing the lock function, the 1st locking pin and the 1st hole End contact and the 2nd locking pin contacted with the end in the 2nd hole, the end in the 2nd hole is relative to imagination The end in vertical guide and the 1st hole is in symmetrical position, and the imagination vertical guide passes through described in the neutral position Movable part.

3. seat for vehicle according to claim 1 or 2, which is characterized in that

1st threaded rod and the 2nd threaded rod are integrally formed as 1 bar, and

The direction of the thread of 1st threaded rod is with the thread of the 2nd threaded rod toward each other on the contrary, and described the The thread pitch dimension having the same of the thread of 1 threaded rod and the 2nd threaded rod.

Technical field

This disclosure relates to be provided with the used for vehicle of movable part at least one party in backrest and Chain cushion Seat.

Background technique

It is taken a seat for example, being disclosed in International Publication WO2013/021497 bulletin for that can be enabled in vehicle turn Person is easy to keep the seat for vehicle of posture.The seat for vehicle is provided at backrest and Chain cushion Movable part.The movable part is the position for being used to support occupant, and is that available in vehicle turn can act on The position of the inertia force displacement of occupant.

Summary of the invention

The disclosure is to disclose a kind of seat for vehicle, and it is unnecessary and be excessively delicately displaced to can inhibit movable part The case where.

The seat for vehicle of the disclosure for example includes movable part, and movable part is set to backrest and Chain cushion In at least one party on, and can be displaced relative to seat frame；1st spring, the 1st spring can be in movable parts towards the 1st direction The elastic force for being displaced the movable part of the displacement towards prespecified neutral position is generated when displacement；1st linking part, the 1st connects Knot is configured to be displaced the 1st end of the 1st spring together with the movable part when movable part is displaced towards the 1st direction；2nd spring, 2nd spring can be generated when movable part is displaced towards the 2nd direction for being different from the 1st direction for making the movable part of the displacement in The elastic force of vertical position displacement；2nd linking part, the 2nd linking part are configured to make the 2nd spring when movable part is displaced towards the 2nd direction 1st end is displaced together with the movable part；And pre-tightening apparatus, pre-tightening apparatus can change when movable part is in neutral position by 1st spring acts on the elastic force of the movable part and acts on the movable part by the 2nd spring when movable part is in neutral position The elastic force of at least one party in elastic force.

Pre-tightening apparatus preferably have such as the 1st adjusting nut, the 2nd adjusting nut, the 1st threaded rod, the 2nd threaded rod and Actuator, the 1st adjusting nut are locked to the 2nd end of the 1st spring；2nd adjusting nut is locked to the 2nd end of the 2nd spring；1st spiral shell Rasp bar is inserted into the 1st adjusting nut；2nd threaded rod is inserted into the 2nd adjusting nut；Actuator is configured to, and makes the 1st threaded rod and the 2nd spiral shell The threaded rod of at least one party in rasp bar rotates.It is excessively delicately displaced thereby, it is possible to inhibit movable part unnecessary Situation.

The seat for vehicle also can have: displacement component, and displacement component and movable part are integrally displaced；1st locking Pin, the 1st locking pin and the 1st adjusting nut are integrally displaced；And the 2nd locking pin, the 2nd locking pin and one position of the 2nd adjusting nut It moves.

It may be provided with the 1st hole and the 2nd hole in displacement component, the 1st locking pin is inserted into the 1st hole, and the 1st locking pin energy It is enough to be displaced in the 1st hole along the direction parallel with the axis direction of the 1st threaded rod；2nd locking pin is inserted into the 2nd hole, and should 2nd locking pin can be displaced in the 2nd hole along the direction parallel with the axis direction of the 2nd threaded rod.

Also, it is preferred that pre-tightening apparatus can play lock function, when pre-tightening apparatus plays the lock function, the preferably the 1st Locking pin is contacted with the end in the 1st hole, and preferably the 2nd locking pin is contacted with the end in the 2nd hole, and the end in the 2nd hole is opposite It is in symmetrical position in the end in imaginary vertical guide and the 1st hole, which passes through the movable part in neutral position.By This, is capable of the displacement of limiting displacement component, that is, can limit the displacement of movable part.

It is preferred that the 1st threaded rod and the 2nd threaded rod are integrally formed as 1 bar, and the screw thread of preferably the 1st threaded rod Opposite toward each other and preferably the 1st threaded rod the thread of the thread of the direction of tooth and the 2nd threaded rod and the 2nd threaded rod Thread pitch dimension having the same.Thereby, it is possible to make the 1st threaded rod and the 2nd threaded rod while being rotated.

Detailed description of the invention

Fig. 1 is the figure for showing seat for vehicle.

Fig. 2 is the figure for showing pre-tightening apparatus.

Fig. 3 is the figure for showing pre-tightening apparatus.

Fig. 4 is the exploded view of pre-tightening apparatus.

Fig. 5 is the figure for showing 1st fastener.

Fig. 6 is the figure for showing 2nd fastener.

Fig. 7 is the figure for showing the 1st adjusting nut.

Fig. 8 is the figure for showing the 2nd adjusting nut.

Fig. 9 is the figure for showing pre-tightening apparatus.

Figure 10 is the figure for showing pre-tightening apparatus.

Specific embodiment

Embodiment of the present disclosure is illustrated referring to the drawings.

" embodiment " below is wherein an example.The present disclosure is not limited to shown by the embodiment being described below Specific structure or construction etc..

In the present embodiment, to the seat (hereinafter referred to as seat for vehicle) being installed in the vehicles such as vehicle Example be illustrated.Mark in the various figures indicate direction arrow etc. be in order to facilitate understanding the correlation of each figure and mark Symbol.

Therefore, the direction the present disclosure is not limited to mark in the various figures.The shown direction of each figure is by present embodiment Seat for vehicle be assembled into vehicle in the state of direction.

1. the summary of seat for vehicle

As shown in Figure 1, seat for vehicle 1 at least has Chain cushion 3 and backrest 5 etc..Chain cushion 3 is used In the buttocks of support occupant.Backrest 5 is used to support the back of occupant.

Movable part 7 is arranged on at least one party in Chain cushion 3 and backrest 5.Movable part 7 can be relative to seat Chair frame 9 is displaced.Movable part 7 is arranged at neutral position with the state that can be displaced to the 1st direction D1 and the 2nd direction D2.

The movable part 7 of present embodiment is set to backrest 5.Therefore, which can be relative to back frame 9A Displacement.The skeleton of backrest 5 includes back frame 9A.

Movable part 7 can be put in seat width direction centered on the swing point that back frame 9A upper end side is arranged in It is dynamic.In addition, " movable part 7 is located at neutral position " refers to, for example, the center of gravity of swing point and movable part 7 is located at and seat width State (referring to Fig.1) on the orthogonal imaginary vertical guide in direction.

By centered on swinging point and being arc-shaped curved guide rail R1 (referring to Fig. 4) and support movable part 7.Guide rail R1 is solid Due to seat frame 9 (back frame 9A).

Specifically, movable part 7 be fixed on Fig. 2 shows the 1st displacement component 151 and the 2nd displacement component 152.1st It moves component 151 and is fixed on the 1st moveable block R21.2nd displacement component 152 is fixed on the 2nd moveable block R22.

1st moveable block R21 and the 2nd moveable block R22 are installed on guide rail R1 in a manner of it can slide.In following the description The displacement component 15 referred to is the general name of the 1st displacement component 151 and the 2nd displacement component 152.

2. displacement limit device

The summary of 2.1 displacement limit devices

<outline structure of displacement limit device>

Displacement limit device 10 shown in Fig. 2 and Fig. 3 is used to limit the displacement of movable part 7.As shown in figure 4, the displacement Limits device 10 at least has the 1st spring 11A, the 2nd spring 11B and pre-tightening apparatus 12 etc..

<the 1st spring and the 2nd spring>

1st spring 11A can be generated when movable part 7 is displaced towards the 1st direction D1 (referring to Fig. 3) for making the displacement The elastomeric element for the elastic force that movable part 7 is displaced towards neutral position.1st direction D1 is movable part 7 for example towards the direction of left dislocation.

2nd spring 11B can be generated when movable part 7 is displaced to the 2nd direction D2 (referring to Fig. 3) for making the displacement The elastomeric element for the elastic force that movable part 7 is displaced towards neutral position.2nd direction D2 be different from the 1st direction D1 direction (in other words I.e. opposite direction).Specifically, the 2nd direction D2 is movable part 7 for example towards the direction of right displacement.

<linking part of the 1st spring and the 2nd spring>

The 1st end hook of 1st spring 11A is hung and is locked to the 1st movable pin 13A shown in Fig. 4.The 1st end of 1st spring 11A It is the end (being the left end of the 1st spring 11A in present embodiment) positioned at the 1st direction side D1 of the 1st spring 11A.

The 1st end hook of 2nd spring 11B is hung and is locked to the 2nd movable pin 13B.The 1st end of 2nd spring 11B is the 2nd spring The end (being the right end of the 2nd spring 11B in present embodiment) positioned at the 2nd direction side D2 of 11B.As wherein an example, this reality The 1st spring 11A and the 2nd spring 11B that apply mode are the helical springs of spring constant having the same.

1st movable pin 13A and the 2nd movable pin 13B can be displaced relative to fixation member 14 and displacement component 15.The The direction of displacement of 1 movable pin 13A and the 2nd movable pin 13B is the direction substantially parallel with the direction of displacement of movable part 7, i.e., with The substantially parallel direction in seat width direction.

Fixation member 14 is fixed on seat frame 9.Displacement component 15 and 7 one of movable part are displaced.It is set in fixation member 14 It is equipped with the 1st affixed side long hole 14A and the 2nd affixed side long hole 14B of long hole shape.As shown in figure 5, being set in the 1st displacement component 151 It is equipped with the 1st fastener 15A that can be locked to the 1st movable pin 13A.

When displacement component 15 is displaced to the 1st direction D1,1st fastener 15A is contacted with the 1st movable pin 13A and to be hooked Mode be locked to the 1st movable pin 13A.When displacement component 15 is displaced to the 2nd direction D2,1st fastener 15A will leave the 1 movable pin 13A.

As shown in fig. 6, being provided with the 2nd fastener 15B that can be locked to the 2nd movable pin 13B in the 2nd displacement component 152.When When displacement component 15 is displaced to the 2nd direction D2,2nd fastener 15B is contacted with the 2nd movable pin 13B and is engaged in a manner of hook In the 2nd movable pin 13B.

When displacement component 15 is displaced to the 1st direction D1,2nd fastener 15B will leave the 2nd movable pin 13B.1st is fixed The length direction of side long hole 14A and the 2nd affixed side long hole 14B are the sides substantially parallel with the direction of displacement of displacement component 15 To, that is, the substantially parallel direction with seat width direction.Therefore, the 1st affixed side long hole 14A and the 2nd affixed side long hole 14B It is substantially arc-shaped long hole.

1st movable pin 13A can with through the 1st affixed side long hole 14A state the 1st affixed side long hole 14A length Degree side shifts up.2nd movable pin 13B can be with the state through the 2nd affixed side long hole 14B in the 2nd affixed side long hole 14B Length direction on be displaced.

In the state that the namely movable part 7 of displacement component 15 is in neutral position, the 1st movable pin 13A and the 1st affixed side Long hole 14A being located at away from the end contact at the closer position in seat width direction center in the both ends on length direction, and And it is contacted with 1st fastener 15A.

In the state that movable part 7 is in neutral position, the 2nd movable pin 13B and the 2nd affixed side long hole 14B are in length side Being located at away from the end contact at the closer position in seat width direction center and being connect with 2nd fastener 15B in upward both ends Touching.

As shown in figure 3, specifically, the 1st movable pin 13A and the 1st is solid in the state that movable part 7 is in neutral position The right end contact and the 2nd movable pin 13B for determining side long hole 14A are contacted with the 2nd left end affixed side long hole 14B.

<movement of the linking part of the 1st spring and the 2nd spring>

If the movable part 7 in neutral position is displaced towards the 1st direction D1 (towards a left side), connect with the left end of 1st fastener 15A 1st movable pin 13A of touching will be with movable part 7 namely with displacement component 15 integrally in the 1st affixed side long hole 14A to left position It moves.

If the movable part 7 in neutral position is displaced towards the 1st direction D1 (towards a left side), since the 2nd movable pin 13B and the 2nd is solid Determine the left end contact of side long hole 14B, therefore the 2nd movable pin 13B will not be moved.At this point, 2nd fastener 15B leaves the 2nd movably It sells 13B and is displaced.

If the movable part 7 in neutral position is displaced towards the 2nd direction D2 (towards the right side), connect with the right end of 2nd fastener 15B 2nd movable pin 13B of touching can be with displacement component 15 integrally in the 2nd affixed side long hole 14B towards right displacement.

If the movable part 7 in neutral position is displaced towards the 2nd direction D2 (towards the right side), since the 1st movable pin 13A and the 1st is solid Determine the right end contact of side long hole 14A, therefore, the 1st movable pin 13A will not be moved.At this point, 1st fastener 15A leave the 1st can It is dynamic to sell 13A and be displaced.

That is, the 1st movable pin 13A is as the 1st end for making the 1st spring 11A and is somebody's turn to do when movable part 7 is displaced towards the 1st direction D1 The 1st linking part that movable part 7 is displaced together and play a role.When movable part 7 is displaced towards the 2nd direction D2, the 2nd movable pin 13B It plays a role as the 2nd linking part for being displaced the 1st end of the 2nd spring 11B together with the movable part 7.

2.2 pre-tightening apparatus

<summary of pre-tightening apparatus>

Pre-tightening apparatus 12 for changing the 1st spring 11A initial load (the 1st pretightning force) and the 2nd spring 11B's is initial Load (the 2nd pretightning force).1st pretightning force is that the 1st spring 11A acts on the movable part 7 when movable part 7 is in neutral position Elastic force.

2nd pretightning force is the elastic force for acting on the movable part 7 by the 2nd spring 11B when movable part 7 is in neutral position. In addition, the pre-tightening apparatus 12 of present embodiment can change simultaneously 2 pretightning forces.

As shown in figure 3, pre-tightening apparatus 12 at least has the 1st adjusting nut 16A, the 2nd adjusting nut 16B and displacement mechanism 17 etc..The 2nd end (being right end in present embodiment) of 1st spring 11A is locked to the 1st adjusting nut 16A.

The 2nd end (being left end in present embodiment) of 2nd spring 11B is locked to the 2nd adjusting nut 16B.Displacement mechanism 17 It is displaced the 1st adjusting nut 16A and the 2nd adjusting nut 16B to the 1st direction D1 or the 2nd direction D2.

Displacement component 15 is provided with the 1st hole 15C and the 2nd hole 15D.1st hole 15C and the 2nd hole 15D be with it is movable The long hole that the substantially parallel side of the direction of displacement in portion 7 upwardly extends.In addition, the 1st hole 15C of present embodiment and the 2nd hole 15D It is linearly in the longitudinal direction to extend.

As shown in fig. 7, the 1st locking pin 16C is inserted into the 1st hole 15C.1st locking pin 16C can be in the length side of the 1st hole 15C Upward sliding.1st locking pin 16C is formed as one with the 1st adjusting nut 16A and the position together with the 1st adjusting nut 16A It moves.

As shown in figure 8, the 2nd locking pin 16D is inserted into the 2nd hole 15D.2nd locking pin 16D can be in the length side of the 2nd hole 15D Upward sliding.2nd locking pin 16D is formed as one with the 2nd adjusting nut 16B and the position together with the 2nd adjusting nut 16B It moves.

<displacement mechanism>

As shown in figure 4, displacement mechanism 17 has the 1st threaded rod 17A, the 2nd threaded rod 17B and actuator 17C etc..1st Threaded rod 17A is inserted into the 1st adjusting nut 16A and is screwed with the 1st adjusting nut 16A (referring to Fig. 7).

2nd threaded rod 17B is inserted into the 2nd adjusting nut 16B and is screwed with the 2nd adjusting nut 16B (referring to Fig. 8). Actuator 17C generates the rotation for rotating the threaded rod of at least one party in the 1st threaded rod 17A and the 2nd threaded rod 17B Turn power.

In the present embodiment, as shown in figure 4, the 1st threaded rod 17A and the 2nd threaded rod 17B are integrally formed as a stick Material.Therefore, actuator 17C makes the 1st threaded rod 17A and the 2nd threaded rod 17B while rotating identical angle.

In addition, the thread of the direction and the 2nd threaded rod 17B of the thread of the 1st threaded rod 17A toward each other on the contrary, And the 1st threaded rod 17A and the 2nd threaded rod 17B are 1 threaded rods of pitch dimension having the same.Therefore, if 1 spiral shell Rasp bar is rotated towards the 1st direction, then the 1st adjusting nut 16A and the 2nd adjusting nut 16B is displaced identical in mode close to each other Distance.

If 1 threaded rod is rotated towards the 2nd direction, the 1st adjusting nut 16A and the 2nd adjusting nut 16B are with remote each other From mode be displaced with a distance from identical.That is, the rotation angle regardless of 1 threaded rod, the 1st adjusting nut 16A and the 2nd is adjusted Section nut 16B is in the imaginary vertical guide So (referring to Fig. 9) relative to the movable part 7 for being placed through neutral position always and is in Symmetrical position.More specifically, as wherein an example, vertical guide So passes through the swing point of movable part 7 and is located at neutral position The center of gravity for the movable part 7 set.

The movement of 2.3 displacement limit devices

<summary (referring to Fig. 9) of movement>

If the movable part 7 in neutral position is displaced towards the 1st direction D1 (towards a left side), the 1st movable pin 13A is locked to the 1st Fastener 15A.Therefore, the 1st movable pin 13A is integrally displaced towards the 1st direction D1 (towards a left side) with displacement component 15 and the 2nd is movable Pin 13B will not be moved.

Therefore, if in neutral position movable part 7 towards the 1st direction D1 (towards a left side) be displaced, the 1st spring 11A stretching, extension from And increase elastic force, therefore, the 1st spring 11A can generate the restoring force for being displaced movable part 7 towards neutral position.

If the movable part 7 in neutral position is displaced towards the 2nd direction D2 (towards the right side), the 2nd movable pin 13B is locked to the 2nd Fastener 15B.Therefore, the 2nd movable pin 13B is integrally displaced towards the 2nd direction D2 (towards the right side) with displacement component 15 and the 1st is movable Pin 13A will not be moved.

Therefore, if in neutral position movable part 7 towards the 2nd direction D2 (towards the right side) be displaced, the 2nd spring 11B stretching, extension from And increase elastic force, therefore, the 2nd spring 11B generates the restoring force for being displaced movable part 7 towards neutral position.

That is, the movable part 7 can be because of the 1st spring if movable part 7 is swung in seat width direction from neutral position The elastic force of 11A or the 2nd spring 11B and be intended to always towards neutral position be displaced.In other words, the 1st spring 11A and the 2nd spring 11B is produced Give birth to the restoring force for movable part 7 to be maintained to neutral position.

<movement of pre-tightening apparatus>

If the 1st threaded rod 17A and the 2nd threaded rod 17B rotation, the 1st adjusting nut 16A and the 2nd adjusting nut 16B It is closer to each other or away from each other in the state of symmetrical positional relationship relative to vertical guide So to remain.Make the 1st adjusting as a result, The distance between nut 16A and the 2nd adjusting nut 16B generate increase and decrease.

Therefore, when movable part 7 is in neutral position, if the 1st threaded rod 17A and the 2nd threaded rod 17B rotation, the 1st Adjusting nut 16A can be linked in the rotation and be displaced relative to the 1st movable pin 13A and the 2nd movable pin 13B, and the 2nd is adjusted Nut 16B can be linked in the rotation and be displaced relative to the 1st movable pin 13A and the 2nd movable pin 13B.That is, if the 1st threaded rod 17A and the 2nd threaded rod 17B rotation, then the 1st pretightning force and the 2nd pretightning force can be linked in the rotation and change.

When the load of the inertia force for acting on movable part 7 etc. is greater than the 1st pretightning force or 2 pretightning force, which will It is displaced towards the direction of the load.So movable part 7 is difficult to be displaced if the 1st pretightning force or the 2nd pretightning force become larger, if also, 1st pretightning force or the 2nd pretightning force become smaller, then movable part 7 is easy to be displaced.

<lock function>

Lock function is the function being displaced for limiting displacement component 15 relative to fixation member 14.That is, if playing the lock Determine function, then movable part 7 will receive limitation relative to the displacement of seat frame 9.

When playing lock function, the 1st locking pin 16C is contacted with the end 15E (referring to Fig. 2) of the 1st hole 15C and the 2nd lock Rationed marketing 16D is contacted with the end 15F (referring to Fig. 2) of the 2nd hole 15D.The end 15F of 2nd hole 15D is two ends of the 2nd hole 15D End of the middle place at the symmetrical position end 15E relative to vertical guide So and the 1st hole 15C.More specifically, end 15E It is the end in the close seat width direction center in the 1st hole 15C, end 15F is the close seat width side in the 2nd hole 15D To the end in center.

Also, when playing lock function, the displacement of movable part 7 towards the 1st direction is limited by the 1st locking pin 16C.By the 2nd Locking pin 16D limits the displacement of movable part 7 towards the 2nd direction.That is, movable part 7 is displaced without normal direction any direction, to make the displacement The displacement of component 15 is restricted.

In addition, in the present embodiment, when playing lock function, as shown in Figure 10, the 1st adjusting nut 16A be in away from 1st movable pin 13A farthest position and the 2nd adjusting nut 16B is in the position farthest away from the 2nd movable pin 13B.

3. the feature of the seat for vehicle of present embodiment

Seat for vehicle 1 has pre-tightening apparatus 12.The pre-tightening apparatus 12 can change when movable part 7 is in neutral position The initial load of the movable part 7 is acted on and when movable part 7 is in neutral position by the 2nd spring by the 1st spring 11A when setting 11B acts on the initial load of at least one party in the initial load of the movable part 7.It is unnecessary thereby, it is possible to limit movable part 7 And the case where being excessively delicately displaced.

Pre-tightening apparatus 12 can change at least one party in the 2nd end of the 1st spring 11A and the 2nd end of the 2nd spring 11B Position.Thereby, it is possible to easily vary the initial load of the spring of at least one party in the 1st spring 11A and the 2nd spring 11B Lotus.

Pre-tightening apparatus 12 can play the lock function being displaced for limiting displacement component 15 relative to fixation member 14.By This, can limit the displacement of movable part 7, therefore, be able to suppress movable part 7 it is unnecessary and the case where be excessively delicately displaced.

Pre-tightening apparatus 12 contacts the 1st locking pin 16C with the end 15E of the 1st hole 15C and makes 2 locking pin 16D are contacted with the end 15F of the 2nd hole 15D.It as a result, can by the 1st locking pin 16C and the 2nd locking pin 16D limitation The displacement in dynamic portion 7, so play lock function.

Displacement mechanism 17 has the 1st adjusting nut 16A, the 2nd adjusting nut 16B, the 1st threaded rod 17A and the 2nd threaded rod 17B.Displacement mechanism 17 can make the 1st adjusting nut 16A by rotating the 1st threaded rod 17A and the 2nd threaded rod 17B And the 2nd adjusting nut 16B displacement.As a result, compared with the structure for example using link mechanism to change initial load, it can make The structure of displacement mechanism 17 more simplification.

(other embodiments)

In the seat for vehicle 1 of above embodiment, movable part 7 is set to backrest 5.But, the disclosure is not It is limited to this.That is, the disclosure is also possible to the structure that such as movable part 7 is set to Chain cushion 3, or in Chain cushion 3 and seat Chair back 5 is provided with the structure of movable part 7.

In the above-described embodiment, helical spring has been used as the 1st spring 11A and the 2nd spring 11B.But, this public affairs It opens without being limited thereto.That is, the disclosure can also constitute the 1st spring 11A by other springs by such as helical torsional spring or scroll spring etc. And the 2nd spring 11B.

In the above-described embodiment, the 1st end of the 1st spring 11A and the 1st end of the 2nd spring 11B are via displacement component 15 Link with movable part 7, and the 2nd end of the 1st spring 11A and the 2nd end of the 2nd spring 11B and fixation member 14 link, and And the 1st spring 11A the 2nd end and the 2nd spring 11B the 2nd end by displacement mechanism 17 realize displacement.

But, the present disclosure is not limited thereto.That is, the disclosure is also possible to such as the 1st end of the 1st spring 11A and the 2nd spring The structure that the 1st end of 11B is displaced relative to displacement component 15.But, under the situation, the 2nd end of the 1st spring 11A and the 2nd bullet The 2nd end of spring 11B can be structure identical with above embodiment, or can be and will not move relative to fixation member 14 Structure.

In the above-described embodiment, lock function can be played.But, the present disclosure is not limited thereto.That is, the disclosure can also be with It is the structure for for example abolishing lock function.

In the above-described embodiment, when playing lock function, the 1st locking pin 16C is contacted with the end 15E of the 1st hole 15C And the 2nd locking pin 16D contacted with the end 15F of the 2nd hole 15D.But, the present disclosure is not limited thereto.

That is, the disclosure is also possible to flowering structure etc..Such as: (a) the 1st locking pin 16C and the 1st when playing lock function The end positioned at the side opposite with end 15E of hole 15C contact and the 2nd locking pin 16D and the 2nd hole 15D be located at and end The structure of the end contact of the opposite side of 15F；(b) make fasten with a bolt or latch shape component engage with displacement component 15 or with movable part 7 The structure of engaging.

The 1st affixed side long hole 14A of above embodiment and the 1st hole 15C etc. is made of through-hole.But, the disclosure is not It is limited to this.That is, the disclosure can also constitute the 1st affixed side long hole 14A and the 1st hole 15C etc. by the groove portion being for example not penetrated.

In the above-described embodiment, movable part 7 is made to reset to neutral position using the tensile-elasticity of 2 springs 11A, 11B. But, the present disclosure is not limited thereto.That is, be also possible to for example to make using the tensile-elasticity of 1 spring or compression elasticity can for the disclosure Dynamic portion 7 resets to the structure of neutral position.

In the above-described embodiment, the seat for vehicle of the disclosure is applied in the car.But, the disclosure can also To make for the seat such as used in the vehicles rail truck, ship and aircraft and in arenas or family etc. In fixed seat.

In addition, the disclosure is also possible to the knot being composed of at least two embodiment in above-mentioned multiple embodiments Structure；Or the structure for abolishing any one element in the constitution element shown in above embodiment.