CN201021161Y

CN201021161Y - Armchair headrest with buffer device

Info

Publication number: CN201021161Y
Application number: CNU2007201190687U
Authority: CN
Inventors: 张华�
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2007-03-21
Filing date: 2007-03-21
Publication date: 2008-02-13
Anticipated expiration: 2017-03-21

Abstract

The utility model discloses a seat headrest with a bumper device. The seat headrest is provided with a headrest supporting frame and a backrest supporting frame arranged on a seat, the headrest supporting frame is connected on the cross beam of the backrest supporting frame through a bumper device. The bumper device is provided with a spring and a coaxial spring cartridge suited on the outer side of the spring, a pair of mutually perforated long slots is arranged on the wall of the spring cartridge, and the headrest supporting frame is threaded through the long slots, and is arranged on the spring cartridge by freely making the elastic motion up and down along the long slots. When the utility model is under the function of the external force, the human head part transitorily and backward moves along with the headrest supporting frame together, the spring laid in the spring cartridge can make the kinetic energy converted into the elastic potential energy in a very short time, the acting force exerted on the human head part can be greatly reduced, and the injury of the human neck part is effectively reduced. The mechanism of the utility model is simple, the cost is low, the noise is small, and the utility model is easy to mechanically process, and the industrialization is easy to realize, therefore being suitable for seats of various vehicles.

Description

A kind of chair headrest with shock absorber

Technical field

The utility model relates to a kind of chair headrest, more specifically to a kind of chair headrest with shock absorber.

Background technology

Headrest is the vitals of a lot of vehicle seats, and whether the structure design of headrest rationally directly has influence on the personal safety of passenger.Along with the development of society, the vehicle are as a kind of walking-replacing tool, and especially car enters each family now just at leisure, and the user is also more and more higher to the performance requriements of car, especially safety.Having seventy percent in the personal injury that traffic accident caused, to belong to cervical vertebra injured, the bump accident that knocks into the back is the arch-criminal who causes the cervical vertebra injury, when an automobile is travelled another car bump in the back, the vigorous exercise of upper half of human body can cause seriously fragile relatively neck and sprain, yet present headrest major part does not have shock absorber, can't satisfy the requirement of people to safety.

Chair headrest with shock absorber generally is to be provided with headrest support and the chairback brace of installing on the seat in the prior art, on the crossbeam of this chairback brace, offer two holes, two free ends of headrest support directly assign into respectively in these two holes, crosswise fixed has the steel plate permanent seat of a rectangular strip on headrest support, be fixed with energy disperser on this steel plate permanent seat, the place ahead at energy disperser is equipped with baffle plate, this device is done the time spent being subjected to external force, external force impels baffle plate to hit energy disperser, kinetic energy is converted into heat energy and eliminates external force, but the bump during this device busy state can produce big noise, and the reciprocal buffering of energy disperser is free inadequately, and buffering effect is not ideal enough.

Along with development of science and technology; also have a lot of new techniques to apply on the headrest; as the occupant's head and neck protection system that is disposed on the VOLVO seat; its groundwork is: think when the bump accident takes place; the head and neck protection system can be got up by rapid inflation; its whole backrest all can be with occupant's hypsokinesis; occupant's entire back presses close to be in the same place with backrest restfully; backrest then can hypsokinesis to reduce the strength that head back is got rid of to greatest extent; the chair back of seat and headrest be parallel motion backward; the top and the head of health are obtained softly; balancedly support and protection; to alleviate the impulsive force that vertebra and neck are born; and prevent that head back from getting rid of the injury that is brought, yet because its design-calculated complexity and cost is higher is not used widely on car seat.

The utility model content

Technical problem to be solved in the utility model provides a kind of a kind of chair headrest with shock absorber in the neck injuries that is subjected to can alleviating under the external force effect people.

The utility model is achieved through the following technical solutions:

A kind of chair headrest with shock absorber is provided with headrest support and the chairback brace of installing on the seat, and this headrest support is to be connected on the crossbeam of this chairback brace by shock absorber.

On above-mentioned architecture basics, wherein:

Described shock absorber is provided with spring and is set in the homoaxial spring strut in spring outside, on the crossbeam that is fixed on chairback brace that this spring strut is vertical, offer the elongated slot of a pair of mutual perforation on the wall of this spring strut, described headrest support passes this elongated slot, and can do being installed on this spring strut of elastic movement along this elongated slot easy on and off.

Described headrest support is positioned at the top of described spring, is covered with piston body above this spring, offers the groove that can be used to keep flat fixing described headrest support on this piston body;

Described headrest support is provided with the headrest position, this two ends, headrest position symmetry has been bent to form two hold-down arms opposite to each other, this two hold-down arm passes a pair of elongated slot on the described shock absorber spring strut, shock absorber is fixed on the crossbeam of chairback brace, two free end symmetries of this two hold-down arm have been bent to form two S. A.s opposite to each other, offer the hole that can embed this two S. A. on the both sides curb girder of described chairback brace crossbeam.

Described headrest support is provided with headrest position, this headrest two ends symmetry be bent to form two hold-down arms, two free end symmetries of this two hold-down arm have been bent to form two S. A.s opposite to each other.

Described shock absorber is that two hold-down arms by headrest support are installed on the crossbeam of chairback brace;

Offer the hole that can embed headrest support two S. A.s on the both sides curb girder of described chairback brace crossbeam.

The utility model is compared to prior art, and its beneficial effect is: the utility model is provided with headrest support and the chairback brace of installing on the seat, and this headrest support is to be connected on the crossbeam of this chairback brace by shock absorber.Two hold-down arms of the headrest seat of this headrest support are the elongated slots that passes above the shock absorber spring strut, be stuck in the groove of motion stops of spring strut inner spring top, and two S. A.s that should headrest are embedded in the hole on the vertical beam on chairback brace crossbeam both sides.When being subjected to external force, the utility model does the time spent, people's head can be in company with headrest support motion backward momently together, two hold-down arms that is to say headrest support are pressed to the spring that is placed in the spring strut, spring can be converted into elastic potential energy to kinetic energy in a short period of time, the application force that is applied on the head part is just weakened greatly, will alleviate the injury that neck is subjected to effectively.Mechanism of the present utility model is simple, and cost is lower, is easy to machinework, and noise is little, easy realization of industrialization.

Description of drawings

Fig. 1 is the back left side structural representation of a kind of chair headrest with shock absorber of the utility model.

Fig. 2 is the left side structural representation of a kind of chair headrest with shock absorber of the utility model.

Fig. 3 is installed in cutaway view on the chairback brace for the shock absorber of a kind of chair headrest with shock absorber of the utility model.

Fig. 4 for the headrest support of a kind of chair headrest with shock absorber of the utility model install before and after structural change figure.

The specific embodiment

The utility model is described in further detail below in conjunction with the drawings and specific embodiments.

A kind of chair headrest with shock absorber of the utility model is provided with headrest support 6 and the chairback brace of installing on the seat 1, and this headrest support 6 is to be connected on the crossbeam of chairback brace 1 by shock absorber 7, and stationkeeping is constant.This shock absorber 7 is provided with spring 3, the homoaxial spring strut 2 that is arranged with in these spring 3 outsides, on the vertical crossbeam that is welded on chairback brace 1 of this spring strut 2, on the wall of this spring strut 2, offer the elongated slot of a pair of mutual perforation, be covered with piston body 4 above this spring 3, this piston body 4 can be free to slide in spring strut 2.Described headrest support 6 is provided with headrest position 8, this headrest position 8 two ends symmetries be bent to form two hold-down arms, the a pair of elongated slot that this two hold-down arm passes on described shock absorber 7 spring struts 2 is placed on the piston body 4, offer on this piston body 4 and can be used to keep flat the groove of fixing this two hold-down arm, this two hold-down arm can be along the elastic movement of doing of this a pair of elongated slot and piston body 4 synchronous easy on and off.Two free end symmetries of two hold-down arms of the headrest position 8 of described headrest support 6 have been bent to form two S. A.s 9 opposite to each other, and corresponding position offers the hole that can embed this two S. A. 9 on the vertical beam on described chairback brace 1 crossbeam both sides.This headrest support 6 is by initial position a in installation process, b moves to a ' after the installation respectively, the position of b ', headrest support 6 just has certain crooked hard power so, the restriction of the flexure stress of headrest support 6 utilizations itself is along the degree of freedom of axially bored line direction like this, be that headrest support 6 has only one degree of freedom: rotate freely, thereby guaranteed that headrest support 6 can rotate more freely in doing kicking motion.

Opening part at described spring strut 2 is fixed with spring cover 5 by screw thread in addition, so just can the limited piston body 4 with keep flat be fixed on the headrest support 6 on this piston body 4 two hold-down arms only in spring strut 2, sliding, and prevent that it from skidding off spring strut 2.

Claims

1. the chair headrest with shock absorber is provided with headrest support and the chairback brace of installing on the seat, and it is characterized in that: this headrest support is to be connected on the crossbeam of this chairback brace by shock absorber.

2. a kind of chair headrest according to claim 1 with shock absorber, it is characterized in that: described shock absorber is provided with spring and is set in the homoaxial spring strut in spring outside, on the crossbeam that is fixed on chairback brace that this spring strut is vertical, offer the elongated slot of a pair of mutual perforation on the wall of this spring strut, described headrest support passes this elongated slot, and can do being installed on this spring strut of elastic movement along this elongated slot easy on and off.

3. a kind of chair headrest according to claim 2 with shock absorber, it is characterized in that: described headrest support is positioned at the top of described spring, above this spring, be covered with piston body, offer the groove that can be used to keep flat fixing described headrest support on this piston body.

4. a kind of chair headrest according to claim 1 with shock absorber, it is characterized in that: described headrest support is provided with the headrest position, two ends, this headrest position symmetry be bent to form two hold-down arms, two free end symmetries of this two hold-down arm have been bent to form two S. A.s opposite to each other.

5. a kind of chair headrest with shock absorber according to claim 4 is characterized in that: described shock absorber is that two hold-down arms by headrest support are fixed on the crossbeam of chairback brace.

6. a kind of chair headrest with shock absorber according to claim 4 is characterized in that: offer the hole that can embed headrest support two S. A.s on the both sides curb girder of described chairback brace crossbeam.

7. a kind of chair headrest according to claim 2 with shock absorber, it is characterized in that: described headrest support is provided with the headrest position, this two ends, headrest position symmetry has been bent to form two hold-down arms opposite to each other, this two hold-down arm passes a pair of elongated slot on the described shock absorber spring strut, shock absorber is fixed on the crossbeam of chairback brace, two free end symmetries of this two hold-down arm have been bent to form two S. A.s opposite to each other, offer the hole that can embed this two S. A. on the both sides curb girder of described chairback brace crossbeam.