Electric and pneumatic combined driving headrest

Abstract

The utility model discloses an electric and pneumatic combined drive headrest which comprises a headrest fixing seat, a headrest sliding seat, a headrest and a pair of side wings. The headrest fixing seat is installed on a seat backrest through a pair of headrest rods, the headrest sliding seat is arranged on the headrest fixing seat in a sliding mode, and the upper portion of the headrest is hinged to the headrest sliding seat. The side wings are hinged to the left side and the right side of the headrest. The electric headrest lifting mechanism is used for driving the headrest sliding seat to slide on the headrest fixing seat; the electric air pump is used for driving the electric headrest sliding seat to slide on the headrest fixing seat; an air bag driving mechanism drives the lower part of the headrest to turn forwards and backwards around a hinge point of the upper part of the headrest and the headrest sliding seat; and the other two air bag driving mechanisms respectively drive the pair of side wings to turn over back and forth around hinge points of the pair of side wings and the headrest. According to the utility model, the up-down and front-back electric adjustment of the headrest and the electric adjustment of the side wing on one side are realized, and the automation degree is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of seat, especially to a headrest of electric and pneumatic combined drive. BACKGROUND

[0002] The conventional headrest of the car seat is manually adjusted in height and vertical angle, and the two side wings are manually adjusted in folding and damping,

[0003] Firstly, the height and vertical angle of the headrest are non-linearly adjusted, and there are only several rated height gears in the height direction and the vertical angle of the headrest. It is difficult to accurately position according to the specific sitting height of the passenger, and the passenger cannot be brought perfect comfort

[0004] Secondly, the two side wings of the headrest of most vehicle models cannot be adjusted, and the manually adjustable ones are positioned by dampers. When riding, the side wings are turned back due to vibration and the action of the passenger, and lose the supporting function.

[0005] Thirdly, the height adjustment function is not easy to operate manually, and the headrest of various vehicle models is difficult to adjust. Due to the imbalance of the internal locking mechanism and the installation error of the guide rail, it is easy to jam, and it needs to be shaken and pulled out or pressed down with great force to adjust. Moreover, it cannot be adjusted when the passenger is riding, and it is more difficult to match the appropriate position and needs to be adjusted multiple times.

[0006] Finally, the internal structure of the angle adjustment in the vertical direction is generally a circulating ratchet mechanism, which can only run in one direction for adjustment. If it is not adjusted well, it needs to be adjusted again, and it is also easy to jam and cannot be reset when resetting to the high position. CONTENT OF THE UTILITY MODEL

[0007] The utility model provides a headrest of electric and pneumatic combined drive to solve various problems by a multi-directional electric adjustment motor system.

[0008] The technical problem needed to be solved by the utility model can be realized by the following technical scheme:

[0009] A headrest of electric and pneumatic combined drive comprises a seat, a seat back, a seat cushion, a headrest fixing seat, a headrest sliding seat, a headrest and a pair of side wings. The seat back and the seat cushion are hinged through an angle adjuster, the headrest fixing seat is installed on the seat back through a pair of headrest rods, the headrest sliding seat is slidingly arranged on the pair of headrest rods, and the upper part of the headrest is hinged to the headrest sliding seat. The pair of side wings are hinged to the left and right sides of the headrest. The utility model is characterized by further comprising:

[0010] A motorized headrest lifting mechanism, a motor part of the motorized headrest lifting mechanism is mounted on the headrest fixed seat, a driving end of the motorized headrest lifting mechanism is connected with the headrest sliding seat, and the headrest sliding seat is driven to slide on the headrest fixed seat;

[0011] A motorized air pump mounted on the headrest fixed seat, the motorized air pump has one air inlet and three air outlets, the three air outlets are divided into a first air outlet, a second air outlet and a third air outlet; wherein the first air outlet is connected with the air inlet of the first air bag driving mechanism, the driving end of the first air bag driving mechanism is connected with the headrest, and the lower part of the headrest is driven to rotate forward and backward around the hinge joint between the upper part of the headrest and the headrest sliding seat; the second air outlet and the third air outlet are connected with the air inlets of the second air bag driving mechanism and the third air bag driving mechanism respectively, the driving end of the second air bag driving mechanism and the driving end of the third air bag driving mechanism are connected with a pair of side wings respectively, and the pair of side wings are driven to rotate forward and backward around the hinge joint between the pair of side wings and the headrest.

[0012] In a preferred embodiment of the utility model, the motorized headrest lifting mechanism is a motorized headrest screw rod lifting mechanism, the screw rod shaft in the motorized headrest screw rod lifting mechanism is arranged on the headrest fixed seat, the nut in the motorized headrest screw rod lifting mechanism is installed on a top fixed plate in circumferential rotation stopping mode, and the top fixed plate is fixed on the headrest sliding seat.

[0013] In a preferred embodiment of the utility model, the first air outlet, the second air outlet and the third air outlet are connected with the air inlet of the first air bag driving mechanism, the air inlet of the second air bag driving mechanism and the air inlet of the third air bag driving mechanism through the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve respectively.

[0014] In a preferred embodiment of the utility model, the first air bag driving mechanism, the second air bag driving mechanism and the third air bag driving mechanism all include an air bag and an air bag connecting push plate mechanism, the air bag pushes the air bag connecting push plate mechanism to move linearly, the air inlet of the first air bag driving mechanism is arranged on the air bag of the first air bag driving mechanism, the air inlet of the second air bag driving mechanism is arranged on the air bag of the second air bag driving mechanism, the air inlet of the third air bag driving mechanism is arranged on the air bag of the third air bag driving mechanism, the air bag connecting push plate mechanism of the first air bag driving mechanism constitutes the driving end of the first air bag driving mechanism and is connected with the headrest, and the air bag connecting push plate mechanism of the second air bag driving mechanism and the air bag connecting push plate mechanism of the third air bag driving mechanism constitute the driving end of the second air bag driving mechanism and the driving end of the third air bag driving mechanism respectively and are connected with a pair of side wings respectively.

[0015] In one preferred embodiment of the present application, a guide groove is arranged in the headrest sliding seat, and the air bag of the first air bag driving mechanism is arranged in the guide groove.

[0016] In one preferred embodiment of the present application, two guide grooves are arranged on the headrest, and the air bag of the second air bag driving mechanism and the air bag of the third air bag driving mechanism are arranged in the two guide grooves respectively.

[0017] By the above technical scheme, the headrest is driven to move up and down by the electric headrest lifting mechanism, the headrest and the pair of side wings are driven to move forward and backward by the first air bag driving mechanism, the second air bag driving mechanism and the third air bag driving mechanism respectively, the up and down, the forward and backward electric adjustment of the headrest and the electric adjustment of the side wing are realized, and the degree of automation is high. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a front view of the seat headrest of the present application.

[0019] Figure 2 It is a schematic view of the headrest in the rising state of the present application.

[0020] Figure 3 It is a structure schematic view of the electric headrest lifting mechanism of the present application.

[0021] Figure 4 It is a structure schematic view of the electric headrest lifting mechanism of the present application.

[0022] Figure 5 It is a schematic view of the headrest in the vertical state of the present application.

[0023] Figure 6 It is a schematic view of the headrest in the inclined state of the present application.

[0024] Figure 7 It is a schematic view of the headrest in the inclined state of the present application.

[0025] Figure 8 It is a schematic view of the pair of side wings in the flat state of the present application.

[0026] Figure 9 It is a schematic view of the pair of side wings in the forward turning state of the present application.

[0027] Figure 10 It is a structure schematic view of the second air bag driving mechanism and the third air bag driving mechanism of the present application.

[0028] Figure 11 It is an electric air pump installation schematic view of the present application. DETAILED DESCRIPTION

[0029] The utility model is further described below in combination with the drawings and specific embodiments.

[0030] Referring to Figures 1 to 11 , the electric and pneumatic combined driving headrest shown in the figure comprises: a seat having a seat back, a seat cushion, a headrest fixing base 100, a headrest sliding base 200, a headrest 300 and a pair of side wings 400a, 400b; the seat back and the seat cushion are hingedly connected through an angle adjuster, the headrest fixing base 100 is installed on the seat back through a pair of headrest rods 500a, 500b, the headrest sliding base 200 is slidingly arranged on the pair of headrest rods 500a, 500b, and the upper part of the headrest 300 is hingedly connected to the headrest sliding base 200; the pair of side wings 400a, 400b are hingedly connected to the left and right sides of the headrest 300; these technical measures all belong to the prior art.

[0031] The utility model has the characteristics that it further comprises: an electric headrest lifting mechanism 600, an electric air pump 700 and three air bag driving mechanisms 800a, 800b, 800c (corresponding to the first air bag driving mechanism, the second air bag driving mechanism and the third air bag driving mechanism respectively).

[0032] The electric headrest lifting mechanism 600 is an electric headrest lead screw lifting mechanism, the motor part 610 of the electric headrest lead screw lifting mechanism is installed on the headrest fixing base 100, the lead screw 620 in the electric headrest lead screw lifting mechanism is arranged on the headrest fixing base 100, the nut 630 in the electric headrest lead screw lifting mechanism is installed on a top fixed plate 640 in a circumferential rotation-stopping manner, and the top fixed plate 640 is fixed on the headrest sliding base 200. In this way, the motor part 610 drives the lead screw 620 to rotate, the rotation of the lead screw 620 is converted into the linear motion of the nut 630, the linear motion of the nut 630 drives the headrest sliding base 200 to move up and down along the headrest fixing base 100 through the top fixed plate 640, and the headrest 300 is further driven to move up and down, thereby realizing the lifting function of the headrest 300.

[0033] The electric air pump 700 is installed on the headrest fixing base 100, and the electric air pump 700 has one air inlet and three air outlets, which are divided into a first air outlet, a second air outlet and a third air outlet.

[0034] The three air bag driving mechanisms 800a, 800b, 800c each comprise an air bag 810a, 810b, 810c and an air bag connecting push plate mechanism 820a, 820b, 820c, and the air bag 810a, 810b, 810c drives the air bag connecting push plate mechanism 820a, 820b, 820c to move linearly.

[0035] The first, second and third air outlets of the electric air pump 700 are connected to the air inlets of the air bags 810a, 810b and 810c of the air bag driving mechanisms 800a, 800b and 800c respectively through the electromagnetic valves 830a (the aforementioned first electromagnetic valve), 830b (the aforementioned second electromagnetic valve) and 830c (the aforementioned third electromagnetic valve) and air tubes. The air bag connecting push plate mechanisms 820a, 820b and 820c are connected to the headrest 300 and the pair of side wings 400a and 400b respectively, and drive the headrest 300 and the pair of side wings 400a and 400b to flip forward and backward to reach the angle required by the passenger.

[0036] An air bag 810a is installed in a guide groove 210 provided in the headrest sliding seat 200. Two guide grooves 310a and 310b are provided on the headrest 300, and the air bags 810b and 810c of the air bag driving mechanisms 800b and 800c are installed in the two guide grooves 310a and 310b respectively.

Claims

1. A headrest driven by a combination of electric and pneumatic power, comprising: The seat has a seat back, a seat cushion, a headrest fixing seat, a headrest slide, a headrest, and a pair of side wings; The seat back and seat cushion are hinged together by an adjuster; the headrest fixing seat is mounted on the seat back via a pair of headrest rods; the headrest slide is slidably disposed on the headrest fixing seat; the upper part of the headrest is hinged to the headrest slide; a pair of side wings are hinged to the left and right sides of the headrest; characterized in that it further includes: An electric headrest lifting mechanism is provided, wherein the motor part of the electric headrest lifting mechanism is mounted on the headrest fixing base, and the drive end of the electric headrest lifting mechanism is connected to the headrest slide, driving the headrest slide to slide on the headrest fixing base; An electric air pump is mounted on the headrest slide. The electric air pump has one air inlet and three air outlets, which are divided into a first air outlet, a second air outlet, and a third air outlet. The first air outlet is connected to the air inlet of a first airbag driving mechanism. The driving end of the first airbag driving mechanism is connected to the headrest, driving the lower part of the headrest to rotate back and forth around the hinge point between the upper part of the headrest and the headrest slide. The second and third air outlets are respectively connected to the air inlets of the second and third airbag driving mechanisms. The driving ends of the second and third airbag driving mechanisms are respectively connected to a pair of side wings, driving the pair of side wings to rotate back and forth around the hinge point between the pair of side wings and the headrest.

2. The headrest with combined electric and pneumatic drive according to claim 1, characterized in that, The electric headrest lifting mechanism is an electric headrest screw lifting mechanism. The screw shaft of the electric headrest screw lifting mechanism is mounted on the headrest fixed seat. The screw nut of the electric headrest screw lifting mechanism is mounted on a top fixed plate in a circumferential anti-rotation manner. The top fixed plate is fixed on the headrest slide.

3. A headrest with combined electric and pneumatic drive according to claim 1, characterized in that, The first air outlet, the second air outlet, and the third air outlet are respectively connected to the air inlet of the first airbag driving mechanism, the air inlet of the second airbag driving mechanism, and the air inlet of the third airbag driving mechanism through the first solenoid valve, the second solenoid valve, and the third solenoid valve.

4. A headrest with combined electric and pneumatic drive according to claim 1, characterized in that, The first airbag driving mechanism, the second airbag driving mechanism, and the third airbag driving mechanism each include an airbag and an airbag connecting push plate mechanism. The airbag pushes the airbag connecting push plate mechanism to perform linear motion. The air inlet of the first airbag driving mechanism is located on the airbag of the first airbag driving mechanism, the air inlet of the second airbag driving mechanism is located on the airbag of the second airbag driving mechanism, and the air inlet of the third airbag driving mechanism is located on the airbag of the third airbag driving mechanism. The airbag connecting push plate mechanism of the first airbag driving mechanism constitutes the driving end of the first airbag driving mechanism and is connected to the headrest. The airbag connecting push plate mechanism of the second airbag driving mechanism and the airbag connecting push plate mechanism of the third airbag driving mechanism respectively constitute the driving end of the second airbag driving mechanism and the driving end of the third airbag driving mechanism, and are respectively connected to a pair of side wings.

5. A headrest with combined electric and pneumatic drive according to claim 4, characterized in that, A guide groove is provided in the headrest fixing seat, and the airbag of the first airbag driving mechanism is installed in the guide groove.

6. A headrest with combined electric and pneumatic drive according to claim 4, characterized in that, Two guide grooves are provided on the headrest, and the airbags of the second airbag driving mechanism and the third airbag driving mechanism are respectively installed in the two guide grooves.

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