CN101289070A

CN101289070A - Motorcar electric headrest

Info

Publication number: CN101289070A
Application number: CNA2008100822072A
Authority: CN
Inventors: 武建民
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-02-20
Filing date: 2008-02-20
Publication date: 2008-10-22

Abstract

The invention discloses an automobile electric headrest; the action that a headrest at an automobile chair is adjusted by hand is finished by a machine, thus leading the headrest to satisfy drivers with different statures to realize the largest comfort degree; besides, protective measures which can prevent a driver during high-speed riding from generating oscitancy caused by too comfort are added; therefore, the headrest of the invention is not only comfortable, but also safe.

Description

Automobile electric headrest

Technical field:

The present invention relates to the headrest on motor vehicle seat back top

Background technology:

Headrest on the domestic automobile all is artificial plug, artificial lifting and removes angle at present, even move greatest limit to, can not make very comfortable the leaning against on the headrest of people, make like this people of long-time driving can feel to involve very much cervical spondylopathy, also difficulty during adjustment all feels comfortable but adjust everyone that all can not make different statures in any case.

By domestic patent retrieval, relate to 4 patents that have of this kind technology, application number is respectively 03109947.5,200320121643.9,200320121644.3,200620043758.4, except that 03109947.5 patent that I declare, all the other 3 kinds are not all had something in common with my method, and 200320121644.3 because of no self-locking device, does not possess applicability.

Summary of the invention:

Technical matters to be solved by this invention provides head that a kind of energy is fit to the people of any stature can both rest the head on by electronic knob adjustment after, reach the degree of the most comfortable, and when running at high speed on express highway, the driver can be because of too comfortable and sleeping device.

Technical scheme of the present invention is: have four functions can finish this summary of the invention: one, vertical elevating function, two, the pitching spinfunction, three, the flexible fine adjustment function of headrest, four, self-return function during computer regulated running at high speed.

Two longitudinal screw hollow shafts are stretched out in backrest upper end at seat, the outer garden of this screw rod hollow shaft one end is a smooth side, one end is a screw rod, exposing the backrest upper part is smooth side, be embedded in backrest the inside part and be screw rod, intermediate hollow is worn electric wire, and the worm gear center screw in the lower end screw portion of this cored screw axle and the vertical lifting worm reduction gear is bound up.Vertically worm reduction gear is fixed on the backrest adapter plate, when worm gear rotates under vertically the lifting DC machine drives, because two worm gear rotation directions are opposite, so, when under the two ends of lifting DC machine flexible axle drives, rotating simultaneously, two screw shafts do not change, and only do the oscilaltion campaign synchronously on backrest, have so just finished the vertical lift function of headrest.Owing to adopted worm-and-wheel gear, so can self-locking.

The spinfunction of headrest is laterally to connect a transverse central axis in the upper end of two lifting cored screw axles, and this center shaft maintains static moving, the worm gear centre hole of rotation worm-gear speed reducer is enclosed within on this root transverse central axis, and fixes with key, forms one.The DC machine reductor mouth that drives the worm screw rotation is fixed on the shell of worm reduction gear, and shell can rotate around transverse central axis.Motor side is fixed on the rotational lantern ring that is enclosed within on the transverse central axis, and can rotate around transverse central axis, like this, when motor reducer drives the worm-gear speed reducer rotation, because transverse central axis and the worm gear that is fixed on the transverse central axis can not rotate, to making worm screw drive the decelerator body and DC machine reductor around the rotation of the center of transverse central axis.The headrest shell generally is to make the square box with duroplasts, outer bread foam of square box and epidermis, and the DC machine reductor is to be fixed on the two-layer centre that headrest is moulded shell firmly, so, motor reducer just drives the headrest shell and rotates when rotating, and has reached the rotating purpose of headrest.

The flexible fine adjustment function of headrest is to add one group of device identical with jacking system in the square box moulding firmly of headrest, promptly finely tuning DC machine and reductor is fixed in the headrest shell the opposite worm reduction gear of both direction that drives the motor two ends by flexible axle and rotates simultaneously, be fixed with screw rod with key on the worm gear centre hole, when worm gear rotates, screw rod rotates with one heart, with the joining nut sleeve of screw rod on transverse central axis, and can be around the transverse central axis rotation, like this, when the fine setting motor rotates, two screw rods just in the nut on transverse central axis rotation drive headrest and do dipping and heaving, having reached headrest moves with respect to the position of transverse central axis, and the self-locking of stopping, when headrest places level attitude, accomplished driver's head to the headrest spacing from micro-adjustment.

Computer regulated function is to add a kind of automatic guidance function in automobile computer, such as, street road, incity, city generally all is to be controlled at about 70km/ hour, and traffic lights are more, the driver generally is difficult for sleepy, but on the expressway, rest the head on when comfortable, very easily sleepy, so, should set a speed, after travelling 5 minutes above 80km/ hour, headrest is in computer regulated lower rotating electrical machine work, make headrest leave people's head automatically, get back to the initial position, after being lower than 80km/ hour and travelling 5 minutes, headrest again can self-return pushes up driver's head.Like this, be difficult for producing traffic accident, and passenger and secondary driver headrest needn't be regulated and control, and make it be in the state of the most comfortable forever.

The beneficial effect of this device is that headrest has been changed over automatically controlled adjustment from artificial adjustment, and the artificial grade state of adjusting that has is changed over the stepless state of automatically controlled adjustment, the not fine mode of manually adjustment is changed over the fine mode of automatically controlled adjustment.It is sleepy to be difficult for when running at high speed that the driver is produced, and makes the adjustment of headrest accomplish technology upgrading, makes people's Energy and comfort.

Description of drawings:

Below in conjunction with accompanying drawing specific implementation method of the present invention is done further detail explanation.

Fig. 1 is the front view of automobile electric headrest of the present invention

The specific embodiment:

By shown in Figure 1, structure of the present invention is divided into four parts, first is the vertical lift function, on seat back-rest framework 14, with clamp 21 lifting motor 20 and two reductors 15 are fixed on the backrest adapter plate 18, motor 20 power reach worm screw 17 through flexible axle 19, and worm screw 17 drives worm gear 16 rotations, and worm gear 16 centre holes are screws, be complementary with lifting cored screw 12 and connect, when worm gear 16 rotations, cored screw 12 does not rotate, but can move up and down in the worm gear center screw, two worm gears 16 are opposite with worm screw 17 rotation directions, so when motor 20 rotated, two cored screws can rise in orienting sleeve 13 or descend simultaneously, the hollow interior of screw rod can be worn electric wire.

Second portion is a spinfunction, DC machine reductor 22, one end is fixed on the rotational lantern ring 26 that is enclosed within transverse central axis 9, this collar 26 can rotate around transverse central axis 9, the other end is fixed on the shell 7 of the worm-gear speed reducer that is enclosed within transverse central axis 9, shell 7 can rotate around transverse central axis 9, worm gear 11 centre holes of this reductor are through on the transverse central axis 9, and it is fixing with it with key, it can not be rotated on transverse central axis 9, like this when DC machine reductor 22 rotates, pay 6 by helical wheel and drive worm screw 8 rotations, worm screw 8 and worm gear 11 engagements, because transverse central axis 9 is fixed, so, the DC machine reductor 22 that has only worm screw 8 to drive reductor shell 7 and be fixed on the shell 7 rotates around the center of transverse central axis 9, because DC machine reductor 22 is to be contained in square to mould firmly in the box 23, so, just drive whole square and mould box 23 firmly around transverse central axis 9 rotations.Square is moulded box 23 outsides firmly and is with foamed plastic and headrest epidermis, like this, has reached the purpose of headrest rotation.

Third part 1 is the worm reduction box of fine adjustment function, be screwed on adapter plate 3, link to each other with fine setting DC machine 5 by flexible axle 2, clamp 4 is fixed on square to fine setting DC machine 5 and moulds firmly on the adapter plate 3 in the box 23, square box 23 outer bread foam and epidermises, when motor 5 rotates, driving two flexible axles 2 rotates, the worm screw that flexible axle 2 drives in the drop-gear boxs 1 is rotated, and worm screw drives worm gear, and screw rod 25 coaxial rotation that are fixed together with worm gear at worm gear center, screw rod 25 is to be through in the nut 24, nut 24 does not rotate, and like this, whole micro-tensioning system drive square is moulded box 23 firmly and relatively moved with respect to transverse central axis 9.The two ends of transverse central axis 9 are connected through the upper end of adapter sleeve 10 with two hollow half screw rods 12, like this, can make that distance is able to adjust in a small amount between people's back of head and headrest.

The 4th part is to avoid driver's sleepy function of running at high speed, be in the electrical equipment control of automobile, to add the speed time controller, make it under specified speed and time, control driver's headrest breaks away from driver's back brain, or replys the back brain position that touches the driver.

Claims

1, the electronic adjusting mechanism of automobile electric headrest, its elevating function is by direct current lifting motor 20, symmetry flexible axle 19, symmetry worm reduction gear 15, symmetry lifting hollow screw 12 is formed, its spinfunction is by direct current rotating machine reductor 22, drving sprial gear pair 6, transverse central axis 9, drop-gear box shell 7, fixedly worm gear 11, worm screw 8 and rotational lantern ring 26 are formed, its fine adjustment function is by DC machine 5, symmetry driving snake 2, symmetry gear reduction unit 1, symmetrical screw 25, symmetry nut 24 is formed, in automobile, added the speed time-controlling arrangement, it is characterized in that: make two polished rods of former headrest into hollow half screw rod 12, and under the drive of DC machine 20, do dipping and heaving, two terminations of transverse central axis 9 are connected with adapter sleeve 10 with two upper ends of hollow half screw rod 12, be with the rotatable collar 26 on the transverse central axis 9, two rotary nuts 24, gear reduction casing 7, and be keyed on the worm gear 11 of axle on 9, direct current rotating machine reductor 22, one end is fixed on the reducing gearbox 7, one end is fixed on the rotational lantern ring 26, direct current fine setting motor 5 usefulness clamps 4 are fixed on headrest to be moulded on the interior adapter plate 3 of square box 23 firmly, symmetry worm reduction gear 1 also is fixed on the adapter plate 3, be connected direct current fine setting motor 5 and worm reduction gear 1 intermediate transfer power by flexible axle 2, worm gear centre hole internal fixation in the worm reduction gear 1 has screw shaft 25, and with the coaxial rotation of worm gear, screw rod 25 links with nut 24, nut 24 can rotate around horizontal center shaft 9, sleepy when avoiding the head driver time to run at high speed, in the electric-control system of automobile, inserted the time speed controller, after making the galloping certain hour, headrest can break away from driver's head automatically, behind the low speed driving certain hour, headrest can be got back to the home position of driver's head again automatically.

2, according to claim 1: it is characterized in that hollow half screw rod 12 in the vertical lift function, half is screw rod for outer garden, and second half is a polished rod, polished rod partly exposes in the backrest outside, in oscilaltion, is rotated by nut, screw rod is motionless, and hollow position is worn electric wire and used.

3, according to claim 1: it is characterized in that the screw rod 25 in the fine adjustment function is fixed together with worm gear concentric in the reductor 1,25 for screw rod changes, and nut 24 does not change, and nut 24 can rotate around the center of transverse central axis 9.

4, according to claim 1, it is characterized in that motor 20, motor 5 is two ends output, and two-end structure is a left-right symmetric, two ends flexible axle transmission, two ends worm reduction gear 1,15 is the opposite symmetrical structure of rotation direction.

5, according to claim 1, it is characterized in that the worm gear 11 that is contained on the transverse central axis in the spinfunction does not change, when motor reducer 22 rotates, can only be that worm screw and motor reducer 22 are around the rotation of the center of transverse central axis 9.

6, according to claim 1, it is characterized in that motor 5, motor reducer 22, symmetry reductor 1, flexible axle 2, worm reduction gear 7, transverse central axis 9, symmetrical nut 24, symmetrical screw 25, rotational lantern ring 26, all be contained in headrest and mould firmly in the square box 23, square box 23 outer bread foam and epidermises.

7, according to claim 1, it is characterized in that motor 20, motor clamp 21, flexible axle 19, worm reduction gear 15, all be contained in the backrest skeleton.

8, according to claim 1, it is characterized in that interior time and the speed control unit that adds of automobile, can set arbitrarily, and the memory returning device is arranged.