CN106166970B - A kind of automotive seat - Google Patents

Abstract

The present invention provides a kind of automotive seats, belong to automotive seating art field.It solves the technical problems such as the neck protecting device starting time length of existing seat.Automotive seat includes backrest and headrest, there is cavity inside backrest, the upper surface of the backrest has the opening being connected with its cavity, this automotive seat includes backboard, head rest pole, casing and mandrel, the upper end of head rest pole and headrest are connected, the lower end of the head rest pole passes through opening grafting in the cavity, mandrel is separately fixed at the both sides of backrest along the width direction setting of backrest and the both ends of the mandrel, casing is set in the mandrel, the lower end of head rest pole is fixed on casing, backboard is located at the lower section of head rest pole and the upper end of the backboard and casing are fixedly connected with, the location structure that the two can be made circumferentially to lock is equipped between casing and mandrel, and location structure can be made to unlock when casing and the peripheral force of mandrel are greater than preset value.The present invention has the advantages that start the time is short, production cost is low etc..

Description

A kind of automotive seat

The application is a kind of entitled automotive seat, and application No. is 201310585272.8, the applying date is 2013 The divisional application on November 20.

Technical field

The invention belongs to automotive seating art fields, are related to a kind of automotive seat.

Background technique

Rear-ended car accident accounts for the 30%-40% of traffic accident, and caused by casualties account for 60% unexpectedly, neck is one A a large amount of nerves, blood vessel intensively position, be vehicle under lower-speed state after touch and can also generate whiplash, at a high speed will It is even lethal to generate serious damage.Whiplash caused by rear-end impact at present has become to human injury's occurrence frequency highest A kind of injury.Whiplash injury principle：Rear-end impact of the front truck by rear car generates a forward acceleration, front truck occupant Neck movement mainly include two processes, the process of swishing a whip makes neck layback until reach capacity first, then springback process So that right and wrong to reaching capacity before neck, the two processes constitute the effect that swishes a whip of neck.

In order to solve this effect that swishes a whip, some producers design some buffer units, such as patent (CN 201506275U) institute A kind of disclosed car seat headrest, it includes with the headrest support frame that backrest is connect and on front side of headrest support frame Chair headrest is equipped with headrest fixed frame at the rear portion of chair headrest, and the headrest fixed frame by that can stretch in the horizontal direction Telescoping mechanism with headrest support frame be connected:Trigger mechanism is equipped on backrest, telescoping mechanism is connected with trigger mechanism.

Although the device can play a buffer function to the neck of human body, the apparatus structure is excessively complicated, triggering Transmittance process between mechanism and telescoping mechanism is more many and diverse, and not only manufacturing cost is relatively high, but also cannot be guaranteed in collision Moment works, and the reaction time is long.

Summary of the invention

The present invention addresses the above problems in the prior art, provides a kind of automotive seat, to be solved by this invention Technical problem is：How to simplify protective device, accelerate the starting time of protective device and reduces cost.

Object of the invention can be realized by the following technical scheme：

A kind of automotive seat, automotive seat include backrest and headrest, have cavity inside the backrest, the backrest it is upper End face has the opening being connected with its cavity, which is characterized in that this automotive seat further includes backboard, head rest pole, casing and the heart Axis, the upper end of the head rest pole and the headrest are connected, and the lower end of the head rest pole is plugged on described across the opening Cavity in, the mandrel is along the width direction setting of backrest and the both ends of the mandrel are separately fixed at the both sides of backrest, The casing is set in the mandrel, and the lower end of the head rest pole is fixed on casing, and the backboard is located at head rest pole Lower section and the upper end of the backboard and the casing be fixedly connected with, be equipped between the casing and mandrel both can make it is circumferential The location structure of locking, and the location structure can be made to release lock when casing and the peripheral force of mandrel are greater than preset value It is fixed.

Its working principle is as follows：When normal condition, mandrel and backrest are fixed, and casing is circumferentially solid by location structure and mandrel It is fixed, since backboard and head rest pole are all fixed with casing, so be in contact when occupant is sitting in when leaning on back of seat with backrest, The front surface of backboard and backrest can be to be bonded completely, is also possible to there are certain interval, such occupant is taking usually When can be in contact with backboard, can not also contact, under peacetime state, active force between casing and mandrel is generally less than default Value, so location structure is kept casing and mandrel mutually locking, head rest pole will not be kept not around central axis, the headrest of seat It is dynamic.After automobile, which is knocked into the back etc., accident occurs, occupant clashes the front surface of backrest backward, and the front surface of backrest concaves Into so that the back of occupant impinges upon on backboard through backrest is fierce, the power that at this moment backboard is subject to is acted on casing, to set Pipe generates the peripheral force along mandrel circumferential direction, and peripheral force at this moment is generally higher than preset value, at this moment makes location structure solution decannulation Locking between mandrel, for casing around central axis, casing drives head rest pole to rotate synchronously, the upper end of head rest pole drive headrest to Preceding swing, the and then when head back of occupant does not reach maximum speed value, headrest just with the head phase of occupant Contact achievees the purpose that protect occupant's neck to reduce the acceleration difference of occupant's head and the upper backbone of occupant.This automobile Seat directlys adopt lever principle, the both ends by backboard and headrest as lever, and head rest pole is as the body of rod, and mandrel is as branch Point can drive headrest to move forward, in a short time starting protection at once after backboard is clashed by occupant, The reaction delay for reducing device, for occupant provides protection in time, meanwhile, this automotive seat it is relatively simple for structure, without spring Equal components simplify structure compared with prior art, reduce costs.

In a kind of above-mentioned automotive seat, the location structure includes trip one, trip two, trip three and trip Four, the trip one and trip two are each attached on the side of mandrel, and the trip three and trip four are each attached to casing End face on, the trip one and trip three-phase clamping, the trip two is mutually clamped with trip four, and trip one and trip Two are respectively positioned on the same side of trip three and trip four.Trip one and trip two positioned at the same side are equidirectional to resist trip three and card Tenon four, so that casing and mandrel are circumferentially fixed, when casing and the peripheral force of mandrel are greater than the intensity of trip, trip fractures, Casing and mandrel are restored circumferential and are freely rotated.

In a kind of above-mentioned automotive seat, the trip one, trip two, trip three and trip four are plastic part or rubber Glue part.Plastic part can fracture, and have certain intensity value, rubber parts is elastic component, the bent failure under certain effect power.

In a kind of above-mentioned automotive seat, alternatively, the location structure includes being fixed on mandrel side Ratchet on face, the end face of the casing are fixed with ratchet, and the ratchet is elastic component, and the ratchet is mutually nibbled with ratchet It closes.Ratchet and gear, which are meshed, to be played the role of circumferentially positioned, and when active force is excessive, resilient ratchet deforms failure, thus Ratchet and ratchet lose positioning action.

In a kind of above-mentioned automotive seat, the opening diameter is 3-5 times of the headrest shank diameter.It will opening Design is greater than head rest pole, facilitates the swing of head rest pole.

In a kind of above-mentioned automotive seat, the backrest includes metallic framework and clad, the clad packet It is rolled in the outside of metallic framework, the clad and metallic framework form the cavity.Using metallic framework and clad Combination be made backrest be conducive to arrange backboard position.

In a kind of above-mentioned automotive seat, the metallic framework includes left support and right support, left support and right branch Connecting bracket is equipped between frame, the both ends of the connecting bracket are fixedly connected with in the middle part of left support and in the middle part of right support respectively, The backboard is arranged in the top of connecting bracket and between left support and right support.Left support and right support can respectively and The both ends of mandrel are connected, and connecting bracket is used to fix and support left support and right support, and the upper area of three forms and do not have Backboard is arranged in this soft zone domain, is conducive to the abundant shock of seat occupants back and backboard, avoids occupant by the soft zone domain of bracket Back blocked by bracket and protection mechanism made not work.

In a kind of above-mentioned automotive seat, alternatively, the front surface of the backboard and the backrest Front surface fit, the backrest front surface has through slot, and the through slot and the backboard face, the back The plate covering through slot.Through slot directly is being opened up by back, so that backboard and backrest form fabricated structure, when colliding, The back of occupant can pass through through slot and mutually hit with backboard, ensure that the normal starting of protection mechanism.

Compared with prior art, advantages of the present invention is as follows：

1, this automotive seat directlys adopt lever principle, the both ends by backboard and headrest as lever, head rest pole conduct The body of rod, mandrel is as fulcrum, after backboard is clashed by occupant, headrest can be driven to move forward at once, short Starting protection in time reduces the reaction delay of device, provides protection in time for occupant.

2, this automotive seat is relatively simple for structure, without components such as springs, compared with prior art, simplifies structure, It reduces costs.

Detailed description of the invention

Fig. 1 is the structure schematic elevation view of this automotive seat in embodiment one.

Fig. 2 is the cross-sectional view at the A-A in Fig. 1.

Fig. 3 is the structural schematic diagram of the location structure in embodiment one.

Fig. 4 is the structural schematic diagram of the location structure in embodiment two.

Fig. 5 is the structural schematic diagram of the backrest in embodiment three.

In figure, 1, backrest；11, metallic framework；12, clad；111, left support；112, right support；113, connecting bracket； 13, through slot；2, it rests the head on；3, cavity；4, it is open；5, backboard；6, head rest pole；7, casing；8, mandrel；9, location structure；91, trip One；92, trip two；93, trip three；94, trip four；95, ratchet；96, ratchet.

Specific embodiment

Following is a specific embodiment of the present invention in conjunction with the accompanying drawings, technical scheme of the present invention will be further described, However, the present invention is not limited to these examples.

Embodiment one：

As shown in Figure 1, Figure 2 and Figure 3, automotive seat includes backrest 1 and headrest 2, has cavity 3, the backrest inside backrest 1 1 upper surface has the opening 4 that is connected with its cavity 3, this automotive seat includes backboard 5, head rest pole 6, casing 7 and mandrel 8, 4 diameters that are open are 3-5 times of 6 diameter of head rest pole.It is greater than head rest pole 6 for what opening 4 designed, facilitates the swing of head rest pole 6. The upper end of head rest pole 6 and headrest 2 are connected, and the lower end of the head rest pole 6 passes through opening 4 and is plugged in cavity 3, and mandrel 8 is along backrest 1 The both ends of width direction setting and the mandrel 8 are separately fixed at the both sides of backrest 1, and casing 7 is set in the mandrel 8, rests the head on The lower end of bar 6 is fixed on casing 7, and backboard 5 is located at the lower section of head rest pole 6 and the upper end of the backboard 5 and casing 7 are fixedly connected with.

Backrest 1 includes metallic framework 11 and clad 12, and clad 12 is wrapped in the outside of metallic framework 11, clad 12 Cavity 3 is formed with skeleton.The position that backrest 1 is conducive to arrange backboard 5 is made using the combination of metallic framework 11 and clad 12. Metallic framework 11 includes left support 111 and right support 112, connecting bracket 113 is equipped between left support 111 and right support 112, even It connects middle part of the both ends of bracket 113 respectively with 111 middle part of left support and right support 112 to be fixedly connected with, backboard 5 is arranged in connecting bracket 113 top and between left support 111 and right support 112.Left support 111 and right support 112 can respectively with mandrel 8 two End is connected, and connecting bracket 113 is used to fix and support left support 111 and right support 112, and the upper area of three forms and do not have Backboard 5 is arranged in this soft zone domain, is conducive to the abundant shock of seat occupants back and backboard 5, avoids multiplying by the soft zone domain of bracket It is blocked by bracket and protection mechanism is made not work in the back of member.

It is equipped with the location structure 9 that the two can be made circumferentially to lock between casing 7 and mandrel 8, and works as the week of casing 7 and mandrel 8 Location structure 9 can be made to unlock when being greater than preset value to power.In the present embodiment, location structure 9 includes trip 1, trip 2 92, trip 3 93 and trip 4 94, trip 1 and trip 2 92 are each attached on the side of mandrel 8, trip 3 93 and card Tenon 4 94 is each attached on the end face of casing 7, and trip 1 is mutually clamped with trip 3 93,4 94 phase card of trip 2 92 and trip It connects, and trip 1 and trip 2 92 are respectively positioned on the same side of trip 3 93 and trip 4 94.Trip 1 positioned at the same side With trip 2 92 is equidirectional resists trip 3 93 and trip 4 94 so that casing 7 and mandrel 8 are circumferentially fixed, once casing 7 and the heart When the peripheral force of axis 8 is greater than the intensity of trip, trip fractures, and casing 7 and mandrel 8 are restored circumferential and be freely rotated.The present embodiment In, trip 1, trip 2 92, trip 3 93 and trip 4 94 are plastic part or rubber parts.Plastic part can fracture, and have one Fixed intensity value, rubber parts are elastic component, the bent failure under certain effect power.

When normal condition, mandrel 8 and backrest 1 are fixed, and casing 7 is circumferentially fixed by location structure 9 and mandrel 8, due to back Plate 5 and head rest pole 6 are all fixed with casing 7, so be in contact when occupant is sitting on the backrest 1 of seat with backrest 1, backboard 5 It can be with the front surface of backrest 1 and to be bonded completely, be also possible to there are certain interval, such occupant can in usual take It to be in contact with backboard 5, can not also contact, under peacetime state, the active force between casing 7 and mandrel 8 is generally less than default Value, so location structure 9 is kept 8 mutually locking of casing 7 and mandrel, head rest pole 6 will not be rotated around mandrel 8, the headrest 2 of seat It remains stationary.After automobile, which is knocked into the back etc., accident occurs, occupant clashes the front surface of backrest 1 backward, the front surface of backrest 1 It is inwardly recessed, so that the back of occupant impinges upon on backboard 5 through backrest 1 is fierce, the power that at this moment backboard 5 is subject to acts on set On pipe 7, the peripheral force circumferential along mandrel 8 is generated to casing 7, peripheral force at this moment is generally higher than preset value, at this moment to position Structure 9 solves the locking between decannulation 7 and mandrel 8, and casing 7 is rotated around mandrel 8, and casing 7 drives head rest pole 6 to rotate synchronously, head The upper end of pillow bar 6 drives headrest 2 to swing forward, and then when the head back of occupant does not reach maximum speed value, head Pillow 2 has just been in contact with the head of occupant, to reduce the acceleration difference of occupant's head and the upper backbone of occupant, reaches guarantor Protect the purpose of occupant's neck.This automotive seat directlys adopt lever principle, the both ends by backboard 5 and headrest 2 as lever, head Rest the head on bar 6 be used as the body of rod, mandrel 8 be used as fulcrum, after backboard 5 is clashed by occupant, can drive at once headrest 2 to Preceding movement, starting protection, reduces the reaction delay of device, provides protection in time for occupant in a short time, meanwhile, this automotive seats Chair it is relatively simple for structure, without components such as springs, compared with prior art, simplify structure, reduce costs.

Embodiment two：

As shown in figure 4, the present embodiment general contents and embodiment one are identical, institute the difference is that, in the present embodiment, make For another scheme, location structure 9 includes the ratchet 95 being fixed on 8 side of mandrel, and the end face of casing 7 is fixed with ratchet 96, Ratchet 96 is elastic component, and ratchet 96 and ratchet 95 are meshed.Ratchet 96 and gear be meshed play the role of it is circumferentially positioned, when When power is excessive, resilient ratchet 96 deforms failure, so that ratchet 96 and ratchet 95 lose positioning action.

Embodiment three：

As shown in figure 5, the present embodiment general contents and embodiment one are identical, institute the difference is that, in the present embodiment, make For another scheme, the front surface of backboard 5 and the front surface of backrest 1 fit, and 1 front surface of backrest has through slot 13, through slot 13 It is faced with backboard 5, backboard 5 covers through slot 13.Through slot 13 is directly opened up on backrest 1, so that 1 formation group of backboard 5 and backrest Box-like structure, when colliding, the back of occupant can pass through through slot 13 and mutually hit with backboard 5, ensure that normally opening for protection mechanism It is dynamic.

Specific embodiment described herein is only an example for the spirit of the invention.The neck of technology belonging to the present invention The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.

Although 1, backrest is used more herein；11, metallic framework；12, clad；111, left support；112, right branch Frame；113, connecting bracket；13, through slot；2, it rests the head on；3, cavity；4, it is open；5, backboard；6, head rest pole；7, casing；8, mandrel；9, Location structure；91, trip one；92, trip two；93, trip three；94, trip four；95, ratchet；96, the terms such as ratchet, but not It rules out the possibility of using other terms.The use of these items is only for be more convenient to describe and explain sheet of the invention Matter；Being construed as any additional limitation is disagreed with spirit of that invention.

Claims (5)

1. a kind of automotive seat, including backrest (1) and headrest (2), the automotive seat includes neck protecting device, the neck Protective device includes backboard (5), head rest pole (6), casing (7) and mandrel (8), the upper end of the head rest pole (6) and the headrest (2) it is connected, the mandrel (8) is along the width direction setting of the backrest (1) and the both ends of the mandrel (8) are separately fixed at institute The both sides of backrest (1) are stated, described sleeve pipe (7) is set on the mandrel (8), and the lower end of the head rest pole (6) is fixed on institute It states on casing (7), the backboard (5) is located at the lower section of the head rest pole (6) and upper end and the described sleeve pipe of the backboard (5) (7) be fixedly connected with, which is characterized in that there are cavity (3) inside the backrest (1), the upper surface of the backrest (1) have with it is described The opening (4) that cavity (3) is connected, the lower end of the head rest pole (6) pass through the opening (4) and are plugged in the cavity (3), The positioning knot that described sleeve pipe (7) and the mandrel (8) can be made circumferentially to lock is equipped between described sleeve pipe (7) and the mandrel (8) Structure (9), and the location structure (9) can be made to solve when the peripheral force of described sleeve pipe (7) and the mandrel (8) is greater than preset value Except locking；The location structure (9) includes the ratchet (95) being fixed on the mandrel (8) side, the end face of described sleeve pipe (7) It is fixed with ratchet (96), the ratchet (96) is elastic component, and the ratchet (96) and ratchet (95) are meshed.

2. a kind of automotive seat according to claim 1, which is characterized in that the diameter of the opening (4) is the headrest 3-5 times of the diameter of bar (6).

3. a kind of automotive seat according to claim 1 or 2, which is characterized in that the backrest (1) includes metallic framework (11) and clad (12), the clad (12) is wrapped in the outside of metallic framework (11), the clad (12) and described Metallic framework (11) forms the cavity (3).

4. a kind of automotive seat according to claim 3, which is characterized in that the metallic framework (11) includes left support (111) and right support (112) connecting bracket (113), are equipped between the left support (111) and right support (112), the connection The both ends of bracket (113) are fixedly connected with in the middle part of left support (111) and in the middle part of right support (112) respectively, backboard (5) setting The connecting bracket (113) top and between the left support (111) and right support (112).

5. a kind of automotive seat according to claim 3, which is characterized in that the front surface of the backboard (5) and described lean on The front surface of back (1) fits, and backrest (1) front surface has through slot (13), the through slot (13) and the backboard (5) phase Face, the backboard (5) cover the through slot (13).