CN112977213B - Control device of pneumatic waist support - Google Patents
Control device of pneumatic waist support Download PDFInfo
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- CN112977213B CN112977213B CN202110245864.XA CN202110245864A CN112977213B CN 112977213 B CN112977213 B CN 112977213B CN 202110245864 A CN202110245864 A CN 202110245864A CN 112977213 B CN112977213 B CN 112977213B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/64—Back-rests or cushions
- B60N2/66—Lumbar supports
- B60N2/665—Lumbar supports using inflatable bladders
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/90—Details or parts not otherwise provided for
- B60N2/976—Details or parts not otherwise provided for massaging systems
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- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
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Abstract
The invention relates to a control device of a pneumatic waist support, which is used for controlling the air intake and the air exhaust of an air bag, and comprises: the first valve body is internally provided with a first air inlet path and a first exhaust path, and the outside of the first valve body is provided with an air inlet joint communicated with the first air inlet path and an exhaust joint communicated with the first exhaust path; a second valve body with a second air inlet path and a second air exhaust path which are communicated with each other is formed inside the second valve body, an air bag joint which is communicated with the second air inlet path and is used for communicating with an air bag is formed outside the second valve body, and the second valve body is spliced with the first valve body; the middle valve body is inserted between the first valve body and the second valve body, the end part of the middle valve body is connected with the motor, and the middle valve body is provided with an air passage which is internally communicated; the valve body is driven by the motor to rotate between the second valve body and the first valve body, and the first air inlet path and the second air inlet path are communicated to inflate the air bag; or the second exhaust path and the first exhaust path are communicated to exhaust the air bag, so that a plurality of air bags are controlled at low cost, and the problem of large volume caused by a plurality of electromagnetic valves is avoided.
Description
Technical Field
The invention relates to the field of automobile seats, in particular to a control device of a pneumatic waist support.
Background
Current car seat generally sets up pneumatic waist and holds in the palm in order to improve the travelling comfort of waist, avoids waist muscle fatigue. The traditional air bag of the seat massage waist support adopts an electromagnetic valve to control air inlet and air outlet. One path of air bag needs two electromagnetic valves for air intake and exhaust, and the electromagnetic valve has larger volume and higher cost.
Referring to fig. 1 and 2, a front view and a rear view of a prior art seat massage lumbar support are shown. With reference to fig. 1 and 2, if the massage function needs to be enhanced, the number of the air bags 1 needs to be increased to eight air bags or even more, accordingly, the number of the air inlet and exhaust solenoid valves is proportionally increased along with the number of the air bags, and the total control valve 2 occupies a large space and is high in cost.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a control device of a pneumatic waist support, and solves the problems of large size and high cost of an electromagnetic valve in the prior art.
The technical scheme for realizing the purpose is as follows:
the invention provides a control device of a pneumatic waist support, which comprises:
for controlling the intake and exhaust of an air bag, characterized in that the control device comprises:
the valve comprises a first valve body, a second valve body and a third valve body, wherein a first air inlet channel and a first air exhaust channel are formed inside the first valve body;
a second valve body with a second air inlet path and a second air exhaust path which are communicated with each other is formed inside the second valve body, an air bag joint which is communicated with the second air inlet path and is used for communicating with an air bag is formed outside the second valve body, and the second valve body is spliced with the first valve body; and
the middle valve body is inserted between the second valve body and the first valve body, the end part of the middle valve body is in driving connection with the motor, the middle valve body is provided with an air passage which is internally communicated, and the air passage is opened on two opposite side walls of the middle valve body so as to respectively correspond to the first valve body and the second valve body;
the middle valve body is driven to rotate between the second valve body and the first valve body through the motor, so that the air passage is adjusted to conduct the first air inlet passage and the second air inlet passage, and the air bag is inflated; or the air passage is adjusted to conduct the second air exhaust passage and the first air exhaust passage, so that the air bag is exhausted.
A further improvement of the control device of the pneumatic lumbar support of the present invention is that,
the middle valve body is provided with a plurality of air passages at intervals along the extension direction;
the air passages are arranged according to design requirements, and the air bags corresponding to the air passages are independently controlled.
A further improvement of the control device of the pneumatic lumbar support of the present invention is that,
the middle valve body is also provided with a plurality of secondary air passages which are arranged at intervals along the extending direction, and the secondary air passages are communicated with the corresponding air passages in a crossing way;
and the included angles between the two secondary air passages and the horizontal line at the same moment are the same, so that the two corresponding air bags are controlled simultaneously.
The control device of the pneumatic waist support of the invention is further improved,
the first intake air path includes:
a plurality of first air inlet branches which are perpendicular to the side wall of the middle valve body and correspond to the air passages;
the first air inlet main path is communicated with the air inlet joint, is arranged along the extension direction of the middle valve body and is communicated with a plurality of first air inlet branch paths;
the first exhaust path includes:
a plurality of first exhaust branches perpendicular to a side wall of the middle valve body and corresponding to the air passages;
and the first exhaust main path is communicated with the exhaust joint, is arranged along the extension direction of the middle valve body and is communicated with a plurality of first exhaust branches.
A further improvement of the control device of the pneumatic lumbar support of the present invention is that,
the air bag joints are multiple;
the second air inlet circuit comprises a plurality of second air inlet branches corresponding to the air passages, and the second air inlet branches are communicated with the corresponding air bag joints;
the second exhaust path comprises a plurality of second exhaust branches, and the plurality of second exhaust branches and the plurality of second air inlet branches are respectively and correspondingly communicated.
The control device of the pneumatic waist support of the invention is further improved,
still locate including the cover the sealing washer of well valve body, the sealing washer be equipped with correspond to the opening of air flue.
A further improvement of the control device of the pneumatic lumbar support of the present invention is that,
a plurality of annular grooves are formed in the side wall of the middle valve body and are positioned between two adjacent air passages;
the first valve body is provided with a first inserting sheet, and the first inserting sheet is inserted into the corresponding annular groove to realize clamping connection;
the second valve body is formed with the second inserted sheet, through the second inserted sheet insert locate corresponding the ring channel just with first inserted sheet sets up relatively, realizes the second valve body with first valve body concatenation connect in the relative both sides of well valve body.
The control device of the pneumatic waist support has the beneficial effects that:
the control device of the pneumatic waist support is used for being connected with the air bag to control the inflation and the deflation of the air bag. The control device is connected with the air source through adopting the first valve body which is internally provided with the first air inlet circuit, adopts the second valve body which is internally provided with the second air inlet circuit to be connected with the air bag, inserts the middle valve body between the first valve body and the second valve body, and adjusts the rotating angle of the middle valve body through the motor, so that the air passage of the middle valve body is correspondingly communicated with the first air inlet circuit and the second air inlet circuit between the second valve body, and the air bag is inflated.
Or the first valve body with the first exhaust path formed inside is connected with the external environment, and the rotating angle of the middle valve body is adjusted through the motor, so that the air passage of the middle valve body correspondingly conducts the first exhaust path and the second exhaust path between the first valve body and the second valve body, and the air bag is exhausted. The invention can control the inflation and the exhaust of the air bag, can avoid adopting the electromagnetic valve to control the inflation and the exhaust of the air bag, can realize the massage control of a plurality of air bags with low cost, and solves the problems of larger volume and higher cost of the electromagnetic valve adopted in the prior art.
Drawings
Fig. 1 and 2 are front and rear views of a prior art seat massage lumbar support.
Fig. 3 is a schematic structural view of a control device of the pneumatic lumbar support of the present invention.
Figure 4 is an exploded view of the control device of the pneumatic lumbar support of the present invention.
Figures 5 and 6 are front and cross-sectional views of a valve body of the control device of the pneumatic lumbar support of the present invention.
Figure 7 is a cross-sectional view of a first valve body of the control device of the pneumatic lumbar support of the present invention.
Figures 8 and 9 are a cross-sectional view and a bottom view of an upper portion of a second valve body of the control device of the pneumatic lumbar support of the present invention.
Figure 10 is a cross-sectional view of a first embodiment of the control device for the pneumatic lumbar support of the present invention.
Figures 11 and 12 are an inflation mode view and an exhaust mode view of the first embodiment of the control device for the pneumatic lumbar support of the present invention.
Figure 13 is a cross-sectional view of a second embodiment of the control device for the pneumatic lumbar support of the present invention.
Figures 14 and 15 are an inflation mode view and an exhaust mode view of a second embodiment of the control device for the pneumatic lumbar support of the present invention.
Fig. 16 is a table showing the operation sequence of the pneumatic lumbar support of the control device of the pneumatic lumbar support of the present invention.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
Referring to fig. 3, a schematic structural diagram of the control device of the pneumatic lumbar support of the present invention is shown. Figure 4 is an exploded view of the control device of the pneumatic lumbar support of the present invention. Referring to fig. 3 and 4, the control device of the pneumatic lumbar support of the present invention for controlling the air intake and exhaust of the air bag comprises:
the valve comprises a first valve body 10, a second valve body 10, a first air inlet channel, a first air exhaust channel, an air inlet joint 11 and an air exhaust joint 12, wherein the first air inlet channel and the first air exhaust channel are formed inside the first valve body 10;
a second valve body 20 with a second air inlet path and a second air outlet path which are communicated with each other is formed inside, an air bag joint 21 which is communicated with the second air inlet path and is communicated with an air bag is formed outside the second valve body 20, and the second valve body 20 and the first valve body 10 are spliced and connected; and
the middle valve body 30 is inserted between the second valve body 20 and the first valve body 10, the end of the middle valve body 30 is in driving connection with the motor 40, the middle valve body 30 is formed with an air passage 31 with a through inner part, and the air passage 31 is opened at two opposite side walls of the middle valve body 30 to respectively correspond to the first valve body 10 and the second valve body 20;
the middle valve body 30 is driven by the motor 40 to rotate between the second valve body 20 and the first valve body 10, so that the air passage is adjusted to conduct the first air inlet passage and the second air inlet passage, and the air bag is inflated; or the air passage 31 is adjusted to conduct the second air exhaust passage and the first air exhaust passage, so that air is exhausted from the air bag.
The control device of the pneumatic waist support is used for being connected with the air bag to control the inflation and the deflation of the air bag. The control device is connected with the air source through adopting the first valve body which is internally provided with the first air inlet circuit, adopts the second valve body which is internally provided with the second air inlet circuit to be connected with the air bag, inserts the middle valve body between the first valve body and the second valve body, and adjusts the rotating angle of the middle valve body through the motor, so that the air passage of the middle valve body is correspondingly communicated with the first air inlet circuit and the second air inlet circuit between the second valve body, and the air bag is inflated.
Or the first valve body with the first exhaust passage formed inside is connected with the external environment, the rotating angle of the middle valve body is adjusted through the motor, so that the air passage of the middle valve body correspondingly conducts the first exhaust passage and the second exhaust passage between the first valve body and the second valve body, and the air bag is exhausted. The invention can control the inflation and the exhaust of the air bags, can realize the massage control of a plurality of air bags with low cost, can avoid the adoption of an electromagnetic valve to control the inflation and the exhaust of the air bags, and solves the problems of larger volume and higher cost of the electromagnetic valve in the prior art.
As a preferred embodiment of the control device of the pneumatic lumbar support of the present invention, referring to fig. 5 and 6, a front view and a cross-sectional view of a valve body of the control device of the pneumatic lumbar support of the present invention are shown. As shown in fig. 3 to 6, the middle valve body 30 is provided with a plurality of air passages at intervals along the extending direction; the included angles between the air passages and the horizontal line are different at the same time, and the air passages are arranged according to the design requirement so as to independently control the corresponding air bags.
In this embodiment, the middle valve body 30 is a cylinder, and a cross section perpendicular to the length direction of the cylinder is formed by a strip-shaped air passage which passes through the center of the cross section. A plurality of air passages are arranged at intervals along the length direction of the cylinder. The included angles between the air passages and the horizontal line are different at the same time, and the positions of the openings of the air passages on the surface of the cylinder are different, so that different air bags can be controlled independently.
In the present embodiment, the middle valve body 30 is formed by splicing two unit segments. Eight air passages are formed in each unit section, so that one unit section correspondingly controls the air inlet passage, and the other unit section is used for controlling the air exhaust passage.
Further, the opposite ends of the middle valve body 30 are connected with the motor through a rotating shaft in a driving mode, and the middle valve body 30 is driven to rotate so as to drive the air passage to rotate, so that the opening of the air passage is correspondingly communicated with the air passages corresponding to the first valve body 10 and the second valve body 20, and the air passages are communicated to control the air bag to inflate and exhaust.
Further, the valve further comprises a sealing ring 50 sleeved on the middle valve body 30, and the sealing ring 50 is provided with an opening corresponding to the air channel. The middle valve body 30 is sealed at the joint of the second valve body 20 and the first valve body 10 by the packing 50 to prevent air leakage.
As a preferred embodiment of the control device of the pneumatic lumbar support of the present invention, refer to fig. 7, which is a sectional view of a first valve body of the control device of the pneumatic lumbar support of the present invention. As shown in fig. 3 to 7, the first intake path includes: a plurality of first intake branches perpendicular to the side wall of the middle valve body 30 and corresponding to the air passages; a first main intake path communicating with the intake connector 11, disposed along the extending direction of the middle valve body 30 and communicating with the plurality of first branch intake paths; the first exhaust path includes: a plurality of first exhaust branches perpendicular to the side wall of the middle valve body 30 and corresponding to the gas passages; the first exhaust main path connected to the exhaust joint 12 is disposed along the extending direction of the middle valve body 30 and connected to a plurality of first exhaust branches.
In the present embodiment, the first valve body 10 is a rectangular parallelepiped block-shaped structure having a length adapted to the middle valve body 30. The first main intake path and the first main exhaust path are both arranged along the first valve body 10 in the length direction. The eight first air inlet branch circuits are vertically communicated with the eight first main air inlet circuits. The eight first exhaust branch circuits are vertically communicated with the first exhaust main circuit. The first air inlet branch and the first air outlet branch correspond to the cross section of the air passage.
As a preferred embodiment of the control device of the pneumatic lumbar support of the present invention, reference is made to fig. 8 and 9, which are a sectional view and a bottom view of an upper portion of a second valve body of the control device of the pneumatic lumbar support of the present invention. As shown in fig. 3 to 9, the air bag connector 21 is plural; the second air inlet circuit comprises a plurality of second air inlet branches corresponding to the air passages, and the second air inlet branches are communicated with the corresponding air bag joints 21; the second exhaust path comprises a plurality of second exhaust branches, and the plurality of second exhaust branches and the plurality of second air inlet branches are respectively and correspondingly communicated.
Further, the second valve body 20 includes an upper portion and a lower portion which are spliced to each other. The upper portion of the second valve body 20 is a rectangular parallelepiped block-shaped structure fitted with the first valve body 10. The upper portion of the second valve body 20 is formed with a plurality of second intake branches and second exhaust branches corresponding to cross sections of the air passages of the middle valve body 30.
In the present embodiment, the left eight second intake branches correspond to the eight air passages one by one. Eight second exhaust branches and eight air flues one-to-one on the right correspond. The eight second air inlet branch circuits on the left side and the eight second exhaust branch circuits on the right side are communicated with each other in a one-to-one correspondence mode.
The lower portion of the second valve body 20 is of an adapted rectangular parallelepiped plate-shaped structure. The bottom of the cuboid plate-shaped structure is connected with eight convex air bag connectors 21 for connecting eight air bags.
The specific inflation mode is as follows: when the motor drives the middle valve body 30 to rotate to drive the air passage to rotate until an opening at one end of the air passage corresponds to the first air inlet branch, eight air passages on the left side of the middle valve body 30 and the left side of the first valve body 10 are communicated; the other end opening of the air passage corresponds to a second air inlet branch, and eight air passages on the left side of the middle valve body 30 and the left side of the second valve body 20 are communicated and connected, so that the corresponding air bag is inflated.
The specific exhaust mode is as follows: when the motor drives the middle valve body 30 to rotate to drive the air passage to rotate until an opening at one end of the air passage corresponds to the first exhaust branch, the right eight air passages for connecting the middle valve body 30 and the first valve body 10 are communicated; when the opening at the other end of the air passage corresponds to the second exhaust branch, eight air passages on the right of the middle valve body 30 and the second valve body 10 are communicated and connected, so that the corresponding air bag is exhausted.
As a preferred embodiment of the control device of the pneumatic lumbar support of the present invention, a plurality of annular grooves are formed on the side wall of the middle valve body 30, and the annular grooves are located between two adjacent air passages; the first valve body 10 is provided with a first inserting sheet 13, and the first inserting sheet 13 is inserted into the corresponding annular groove to realize clamping connection;
the second valve body 20 is formed with the second inserted sheet, inserts and locates corresponding ring channel and sets up with first inserted sheet relatively through the second inserted sheet, realizes that second valve body 20 and first valve body 10 splice connect in the relative both sides of well valve body 30.
Specifically, the upper and lower opposite sides of the middle valve body 30 are respectively connected with the first valve body 10 and the second valve body 20 in a clamping manner, so that the installation and the disassembly are convenient, and the connection is tight.
As a preferred embodiment of the control device of the pneumatic lumbar support of the present invention, reference is made to fig. 10, which is a cross-sectional view of a first embodiment of the control device of the pneumatic lumbar support of the present invention. Figures 11 and 12 are an inflation mode view and an exhaust mode view of the first embodiment of the control device for the pneumatic lumbar support of the present invention. With reference to fig. 10 and 11, the inflation mode specifically includes: when the motor drives the valve body 30 to rotate to a certain angle, the upper end of the fifth left air passage is communicated with the fifth left first air inlet branch of the first valve body 10, and the lower end of the fifth left air passage is communicated with the fifth left second air inlet branch of the second valve body 10, so that the air bag on the fifth air bag joint 21 is inflated.
Referring to fig. 12, the exhaust mode specifically includes: when the motor drives the valve body 30 to rotate to a certain angle, the upper end of the fifth right air passage is communicated with the fifth right first exhaust branch of the first valve body 10, and the lower end of the fifth right air passage is communicated with the fifth right second exhaust branch of the second valve body 10, so that the air bag on the fifth air bag joint 21 is exhausted. Corresponding air passages are communicated by replacing corresponding air passages, so that corresponding air bags are controlled independently.
Referring to figure 13, a cross-sectional view of a second embodiment of the control device for the pneumatic lumbar support of the present invention is shown. Figures 14 and 15 are an inflation mode view and a deflation mode view of a control device for the pneumatic lumbar support of the present invention according to a second embodiment. As shown in fig. 3 to fig. 15, the middle valve body 30a further has a plurality of secondary air passages 32a arranged at intervals along the extending direction, and the secondary air passages 32a are in cross communication with the corresponding air passages; the included angle between the two secondary air passages and the horizontal line is the same at the same moment so as to realize the simultaneous control of the two corresponding air bags. The double air bags are inflated and deflated in turn to realize the specific massage function.
Specifically, the middle valve body 30a is provided with a plurality of secondary air passages 32a in addition to controlling the air passages of the individual air bags, wherein the angles of two adjacent secondary air passages 32a are the same for realizing simultaneous intake/exhaust of the corresponding two adjacent air bags. When the middle valve body 30a rotates to communicate the two secondary air passages with the first valve body 10a and the second valve body 20a, the two air bags are controlled to be simultaneously charged or discharged.
In a second embodiment, as shown in fig. 13 and 14, the inflation mode is specifically as follows: when the motor drives the valve body 30a to rotate to a certain angle, the upper ends of the left first and second air passages are communicated with the left first and second first air inlet branches of the first valve body 10a, and the lower ends of the left first and second air passages are communicated with the left first and second air inlet branches of the second valve body 10a, so that the air bags on the first and second air bag connectors 21a are inflated.
Referring to fig. 15, the exhaust mode specifically includes: when the motor drives the valve body 30a to rotate to a certain angle, the upper ends of the right first and second air passages are communicated with the right first and second first exhaust branches of the first valve body 10a, and the lower ends of the right first and second air passages are communicated with the right first and second exhaust branches of the second valve body 10a, so that the air bags on the first and second air bag connectors 21a are exhausted. And the corresponding air passages are communicated by replacing the corresponding air passages, so that the two air bags are simultaneously controlled.
Referring to fig. 16, a working sequence chart of the pneumatic lumbar support of the control device of the pneumatic lumbar support of the present invention is shown. Referring to fig. 16, the rotation angle of the valve body is continuously adjusted by the motor, so that different air bags can be controlled. The massage function of the pneumatic waist support is realized by the arrangement and combination of inflation and exhaust of different air bags. States 1-9 in the table are single bag inlet control. States 10-13 in the table are dual bag inlet control.
The control device of the pneumatic waist support has the advantages that:
the control device of the pneumatic waist support is used for being connected with the air bag to control the inflation and the deflation of the air bag. The control device is connected with the air source through adopting the first valve body which is internally provided with the first air inlet circuit, adopts the second valve body which is internally provided with the second air inlet circuit to be connected with the air bag, inserts the middle valve body between the first valve body and the second valve body, and adjusts the rotating angle of the middle valve body through the motor, so that the air passage of the middle valve body is correspondingly communicated with the first air inlet circuit and the second air inlet circuit between the second valve body, and the air bag is inflated.
Or the first valve body with the first exhaust path formed inside is connected with the external environment, and the rotating angle of the middle valve body is adjusted through the motor, so that the air passage of the middle valve body correspondingly conducts the first exhaust path and the second exhaust path between the first valve body and the second valve body, and the air bag is exhausted. The invention can control the inflation and the exhaust of the air bag, can avoid adopting the electromagnetic valve to control the inflation and the exhaust of the air bag, and solves the problems of larger volume and higher cost of the electromagnetic valve adopted in the prior art.
Through set up a plurality of air flues in well valve body, the control switches on corresponding gas circuit respectively to control the air pocket that corresponds, thereby only need a controlling means can control a plurality of air pockets, small, occupation space is little, can realize the massage control of a plurality of air pockets with low costs, can solve among the prior art a plurality of air pockets just need adopt a plurality of solenoid valves, lead to bulky, be not suitable for the problem in little space.
While the present invention has been described in detail and with reference to the embodiments thereof as shown in the accompanying drawings, it will be apparent to one skilled in the art that various changes and modifications can be made therein. Therefore, certain details of the embodiments are not to be interpreted as limiting, and the scope of the invention is to be determined by the appended claims.
Claims (7)
1. A control device for a pneumatic lumbar support for controlling the intake and exhaust of an air bag, said control device comprising:
the valve comprises a first valve body, a second valve body and a third valve body, wherein a first air inlet channel and a first air exhaust channel are formed inside the first valve body;
a second valve body which is internally provided with a second air inlet path and a second air exhaust path which are communicated with each other, an air bag joint which is communicated with the second air inlet path and is used for communicating the second air inlet path and the air bag is formed outside the second valve body, and the second valve body is spliced with the first valve body; and
the middle valve body is inserted between the second valve body and the first valve body, the end part of the middle valve body is in driving connection with the motor, an air passage is arranged in the middle valve body and penetrates through the middle valve body, and the air passage is opened on two opposite side walls of the middle valve body to respectively correspond to the first valve body and the second valve body;
the middle valve body is driven to rotate between the second valve body and the first valve body through the motor, so that the air passage is adjusted to conduct the first air inlet passage and the second air inlet passage, and the air bag is inflated; or the air passage is adjusted to conduct the second air exhaust passage and the first air exhaust passage, so that the air bag is exhausted.
2. The control device for a pneumatic lumbar support of claim 1,
the middle valve body is provided with a plurality of air passages at intervals along the extension direction;
the air passages are arranged according to design requirements, and the air bags corresponding to the air passages are independently controlled.
3. The control device for a pneumatic lumbar support of claim 2,
the middle valve body is also provided with a plurality of secondary air passages which are arranged at intervals along the extending direction, and the secondary air passages are communicated with the corresponding air passages in a crossing way;
and the included angles between the two secondary air passages and the horizontal line at the same moment are the same, so that the two corresponding air bags are controlled simultaneously.
4. The control of the pneumatic lumbar support of claim 2 wherein said first air intake path comprises:
a plurality of first air inlet branches which are perpendicular to the side wall of the middle valve body and correspond to the air passages;
the first air inlet main path is communicated with the air inlet joint, is arranged along the extension direction of the middle valve body and is communicated with a plurality of first air inlet branch paths;
the first exhaust path includes:
a plurality of first exhaust branches perpendicular to a side wall of the middle valve body and corresponding to the air passages;
and the first exhaust main path is communicated with the exhaust joint, is arranged along the extension direction of the middle valve body and is communicated with a plurality of first exhaust branches.
5. The control device for a pneumatic lumbar support of claim 2,
the air bag joints are multiple;
the second air inlet circuit comprises a plurality of second air inlet branches corresponding to the air passages, and the second air inlet branches are communicated with the corresponding air bag joints;
the second exhaust path comprises a plurality of second exhaust branches, and the plurality of second exhaust branches and the plurality of second air inlet branches are respectively communicated correspondingly.
6. The pneumatic lumbar support control device of claim 1,
still locate including the cover the sealing washer of well valve body, the sealing washer be equipped with correspond to the opening of air flue.
7. The control device for a pneumatic lumbar support of claim 1,
a plurality of annular grooves are formed in the side wall of the middle valve body and are positioned between two adjacent air passages;
the first valve body is provided with a first inserting sheet, and the first inserting sheet is inserted into the corresponding annular groove to realize clamping connection;
the second valve body is formed with the second inserted sheet, through the second inserted sheet insert locate corresponding the ring channel just with first inserted sheet sets up relatively, realizes the second valve body with first valve body concatenation connect in the relative both sides of well valve body.
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| CN202110245864.XA CN112977213B (en) | 2021-03-05 | 2021-03-05 | Control device of pneumatic waist support |
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| CN112977213B true CN112977213B (en) | 2022-07-01 |
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| US4707027A (en) * | 1986-02-28 | 1987-11-17 | General Motors Corporation | Pneumatically cushioned vehicle seat(s) and apparatus and method to adjust the same |
| CN103062443A (en) * | 2012-12-14 | 2013-04-24 | 刘典军 | Friction sealing high-pressure reversing valve driven by variable-speed motor |
| JP2016089901A (en) * | 2014-10-31 | 2016-05-23 | 株式会社不二工機 | Flow channel switch valve |
| CN112128417A (en) * | 2020-09-15 | 2020-12-25 | 合肥兰舟智能科技有限公司 | Gas circuit reversing valve |
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Address after: 201315 No. 669 Kang'an Road, Kangqiao Industrial Zone, Pudong New District, Shanghai Applicant after: Yanfeng international Seat System Co.,Ltd. Address before: 201315 No. 669 Kang'an Road, Kangqiao Industrial Zone, Pudong New District, Shanghai Applicant before: YANFENG ADIENT SEATING Co.,Ltd. |
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