Car seat headrest with elastic function
Technical field
The invention belongs to automotive seating art field, and in particular to a kind of automotive seat head with elastic function
Pillow.
Background technology
Car seat headrest is the core component of automotive seat, plays a part of support occupant head, and chair headrest is needed
Reliable head support to be provided for occupant, seating fatigue can not only be alleviated, additionally it is possible to protect and take in traffic accident
Injury in person head and neck, reduction accident.
Traditional car seat headrest is typically only capable to adjust above and below progress, and can not carry out front and rear regulation.With economic society
Meeting and the improvement of people's living standards, while people are stepped up to vehicle safety requirement, also there is different journeys to comfortableness
The requirement of degree, in order to meet 2 points of the above and whip score experimentally, increasing automobile vendor requires automotive seat
Regulatory function before and after headrest increases on the basis of lift adjustment.Regulation is generally overall using headrest before and after existing chair headrest
Reach or the mode moved afterwards, the front and rear governor motion of this headrest are not only complicated, and the mechanism outer profile size of headrest
It is larger, it is difficult to applied in the slim seat design of present flow.Solving problem above turns into the task of top priority.
The content of the invention
To solve above technical problem, the present invention provides a kind of car seat headrest with elastic function, and it is tied
Structure is compact, the support strength of headrest is not influenceed, good reliability, outer profile size also obtains very big lifting, allow design from
Greatly increased by degree.
To achieve the above object, technical solution of the present invention is as follows:
A kind of car seat headrest with elastic function, it is characterized by, including:Headrest bonnet;Headrest protecgulum,
It is covered is covered after headrest, and the bonnet that relative can rest the head on is moved forward and backward;And elastic mechanism, its be located at headrest bonnet and
Between headrest protecgulum, for driving headrest protecgulum;Wherein, the elastic mechanism includes:Fixed block, it is fixed on before headrest
Cover;Pedestal, it is covered after being fixed on headrest;Screw mandrel, its is horizontally disposed, the fortune of the axis and headrest protecgulum of the screw mandrel
Dynamic direction is vertical;Actuator, it is used for drive screw rotation;Two pushing blocks, it coordinates with wire rod thread, and in the band of screw mandrel
It is close to each other or remote under dynamic;And two rear spiral arms being oppositely arranged and two preceding spiral arms being oppositely arranged, each pushing block
Two ends respectively with one after spiral arm and a preceding spiral arm be hinged, it is each after the one end of spiral arm away from pushing block be hinged with pedestal, often
The individual one end of preceding spiral arm away from pushing block is hinged with fixed block.
Using above structure, screw mandrel is driven to rotate by actuator, the rotation of screw mandrel can drive two pushing blocks close to each other
Or it is remote, and then relatively rotated between spiral arm and a preceding spiral arm after driving adjacent one, make fixed block close to or
Person is final to realize that the relative headrest bonnet of headrest protecgulum is moved forward and backward away from pedestal;Compact overall structure, ensure that headrest protecgulum
Support strength after skidding off, good reliability, service life is long, and outer profile size also obtains very big lifting, allow design from
Greatly increased by degree.
Preferably, the actuator includes:Mounting seat, it is slidably matched with pedestal;And motor, it is fixed on
In mounting seat, rotated for drive screw.Using above structure, screw mandrel is driven to rotate by motor, it is easy to accomplish,
Reliability is high, also, mounting seat can be slided along pedestal, further increases the support strength after headrest protecgulum is skidded off forward.
As preferred:The guide housing being adapted with mounting seat is provided with the pedestal, the mounting seat is embedded in guide housing
In, and can be slided along guide housing.Using above structure, to implement being slidably matched for mounting seat and pedestal.
As preferred:There is left chute and right rail respectively on the inwall of the guide housing of mounting seat both sides, this is led
There is upper hopper chute to the upper inside wall of frame, be respectively provided with the both sides of the mounting seat with left slide coordinate left slider and with
The right sliding block that right rail is slidably matched, the top shoe being slidably matched with upper hopper chute is provided with the upper end of the mounting seat.More than
Structure, further improves the reliability that mounting seat is slided along pedestal, makes elastic mechanism relatively reliable.
As preferred:Each rear spiral arm is respectively provided with the first teeth portion close to one end of preceding spiral arm, each preceding spiral arm
The second teeth portion being adapted with the first teeth portion is respectively provided with close to one end of rear spiral arm.Using above structure, by the first teeth portion and
Second teeth portion, can either make preceding spiral arm and rear spiral arm link, assembly precision requirement is disclosure satisfy that again.
As preferred:The each preceding spiral arm and rear spiral arm are respectively provided with lightening grooves one, are equipped with each lightening grooves one
Reinforcement one.Using above structure, while the preceding spiral arm of guarantee and rear spiral arm self-strength, the purpose of loss of weight is realized.
As preferred:The pedestal is embedded in headrest bonnet by interface arrangment.It is simple, reliable using above structure,
It is easily assembled, reduces the preparation of parts.
As preferred:Limiting section is equipped with the two ends of the screw mandrel.It is mutual to limit two pushing blocks using above structure
Remote ultimate range.
As preferred:Head rest pole is fixed with the pedestal.It is simple, reliable, it is ensured that seat head using above structure
The security of pillow.
As preferred:The fixed block has lightening grooves two, and reinforcement two is equipped with each lightening grooves two.Use with
Upper structure, while fixed block self-strength is ensured, realizes the purpose of loss of weight.
Compared with prior art, the beneficial effects of the invention are as follows:
The car seat headrest with elastic function provided using the present invention, compact conformation, support strength is high, can
It is good by property, the function of elastic regulation is realized, outer profile size also obtains very big lifting, makes the free degree of design big
Big increase.
Brief description of the drawings
Fig. 1 is the structural representation under the present invention forward elongation state;
Fig. 2 is the structural representation under the present invention backward retracted mode;
Fig. 3 is the structural representation under elastic mechanism forward elongation state;
Fig. 4 is the structural representation under elastic mechanism backward retracted mode;
Fig. 5 is the structural representation under preceding spiral arm and rear spiral arm open mode;
Fig. 6 is the structural representation under preceding spiral arm and rear spiral arm receiving state;
Fig. 7 is the matching relationship schematic diagram of motor and screw mandrel;
Fig. 8 is the annexation schematic diagram of mounting seat and pedestal;
Fig. 9 is the annexation schematic diagram of pedestal and headrest bonnet.
Embodiment
The invention will be further described with accompanying drawing with reference to embodiments.
As shown in Figure 1 to 4, a kind of car seat headrest with elastic function, including headrest bonnet 1, headrest
Protecgulum 2, elastic mechanism 3 and head rest pole 4, wherein, headrest protecgulum 2 can be moved forward and backward with respect to headrest bonnet 1, elastic machine
Structure 3 is located between headrest bonnet 1 and headrest protecgulum 2, and the elastic mechanism 3 is used to drive the relative headrest bonnet 1 of headrest protecgulum 2
Movable, the head rest pole 4 is fixed in elastic mechanism 3, and is fixedly connected with headrest bonnet 1.
Refer to Fig. 3~Fig. 6, the elastic mechanism 3 include fixed block 30, pedestal 31, screw mandrel 32, actuator 33,
Two pushing blocks 34, two the rear spiral arms 35 and two preceding spiral arms 36 being oppositely arranged that are oppositely arranged.
Fig. 3, Fig. 4, Fig. 8 and Fig. 9 are referred to, fixed block 30 is fixedly connected with headrest protecgulum 2, and the fixed block 30 has loss of weight
Groove 2 301, reinforcement 2 302 is equipped with each lightening grooves 2 301, real while 30 self-strength of fixed block is ensured
The purpose of existing loss of weight.Pedestal 31 is embedded in headrest bonnet 1 by interface arrangment 5.The headrest phase of protecgulum 2 is driven by fixed block 30
Headrest bonnet 1 is moved forward and backward.
Fig. 5~Fig. 8 is referred to, the actuator 33 includes mounting seat 331, motor 332 and deceleration transmission component
336, motor 332 is fixedly mounted in mounting seat 331, the output shaft rotation of motor 332, through deceleration transmission component
The rotation of screw mandrel 32 is driven after 336 decelerations.
Also, left slider 333 is provided with the left side wall of mounting seat 331, right side wall is provided with right sliding block 334, upper wall
Provided with top shoe 335, the pedestal 31 has the guide housing 311 being adapted with mounting seat 311, the insertion guide housing of mounting seat 331
In 311, and it can be slided along guide housing 311.Also, there is the left side being slidably matched with left slider 333 on the inwall of the guide housing 311
Chute 312 and right sliding block 334 right rail 313 being slidably matched and the upper hopper chute 314 being slidably matched with top shoe 335, make peace
Seat 331 can reliably, swimmingly the guide housing 311 of opposite base 31 slides back and forth dress.
Fig. 7 is referred to, the screw mandrel 32 is horizontally disposed, the motion side of the axis and headrest protecgulum 2 of the screw mandrel 32
To vertical, by the rotation of screw mandrel 32 two pushing blocks 34 can be driven close to each other or remote.Also, at the two ends of screw mandrel 32
Limiting section 321 is equipped with, to limit the ultimate range that two pushing blocks 34 are located remotely from each other.
Fig. 5, Fig. 6 and Fig. 8 are referred to, two pushing blocks 34 are relatively arranged on screw mandrel 32, and are matched somebody with somebody with the screw thread of screw mandrel 32
Close, moreover, each pushing block 34 with one after spiral arm 35 and a preceding spiral arm 36 be hinged.Spiral arm 35 is away from pushing block 34 after each
One end is hinged with pedestal 31, and each preceding one end of spiral arm 36 away from pushing block 34 is hinged with fixed block 30.
Fig. 1~Fig. 6 is referred to, when the rotation of screw mandrel 32 drives two pushing blocks 34 close to each other, pushing block 34 drives and it
The rear spiral arm 35 and preceding spiral arm 36 being hinged are rotated, the angle increase between rear spiral arm 35 and preceding spiral arm 36, and fixed block 30 is away from base
Seat 31, moves forward headrest protecgulum 2;When screw mandrel 32 rotation drive two pushing blocks 34 be located remotely from each other when, pushing block 34 drive with
Its rear spiral arm 35 being hinged and preceding spiral arm 36 are rotated, and the angle between rear spiral arm 35 and preceding spiral arm 36 reduces, and fixed block 30 is close
Pedestal 31, is moved rearwards by headrest protecgulum 2.
Fig. 5 and Fig. 6 are referred to, each rear spiral arm 35 is respectively provided with the first teeth portion 351 close to one end of preceding spiral arm 36, often
The individual preceding spiral arm 36 is respectively provided with the second teeth portion 361 being adapted with the first teeth portion 351 close to one end of rear spiral arm 35, by the
One teeth portion 351 and the second teeth portion 361, can either make preceding spiral arm 36 and rear spiral arm 35 link, assembly precision requirement is disclosure satisfy that again.
Also, each preceding spiral arm 36 and rear spiral arm 35 are respectively provided with lightening grooves 1, are equipped with and add in each lightening grooves 1
Strengthening tendons 1, while the preceding spiral arm 36 of guarantee and rear 35 self-strength of spiral arm, realizes the purpose of loss of weight.
Finally it should be noted that foregoing description is only the preferred embodiments of the present invention, the ordinary skill people of this area
Member on the premise of without prejudice to present inventive concept and claim, can make table as multiple types under the enlightenment of the present invention
Show, such conversion is each fallen within protection scope of the present invention.