CN110588469A - Method for reducing vibrations in a vehicle seat headrest, headrest vibration absorber and vehicle - Google Patents
Method for reducing vibrations in a vehicle seat headrest, headrest vibration absorber and vehicle Download PDFInfo
- Publication number
- CN110588469A CN110588469A CN201810600230.XA CN201810600230A CN110588469A CN 110588469 A CN110588469 A CN 110588469A CN 201810600230 A CN201810600230 A CN 201810600230A CN 110588469 A CN110588469 A CN 110588469A
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- Prior art keywords
- headrest
- vehicle seat
- vibration
- absorber
- vehicle
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Classifications
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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
- B60N2/80—Head-rests
-
- 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
- B60N2/80—Head-rests
- B60N2/879—Head-rests with additional features not related to head-rest positioning, e.g. heating or cooling devices or loudspeakers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D65/00—Designing, manufacturing, e.g. assembling, facilitating disassembly, or structurally modifying motor vehicles or trailers, not otherwise provided for
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Seats For Vehicles (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
Abstract
The invention relates to a method for reducing vibration of a headrest of a vehicle seat, a headrest vibration absorber and a vehicle. The method comprises the following steps: carrying out a vehicle seat modal test to obtain modal characteristics of the vehicle seat; carrying out a vehicle seat vibration test to obtain the maximum amplitude of the vehicle seat headrest under the idling working condition of the vehicle; determining parameters of the headrest absorber according to the modal characteristics, the maximum amplitude, and the weight and size of the headrest of the vehicle seat, wherein the parameters comprise the resonant frequency, the weight, the installation direction and size and the clearance with the periphery of the headrest absorber; the headrest absorber is manufactured according to the parameters and mounted on the headrest of the vehicle seat. The invention can directly reduce the vibration of the headrest, greatly reduce the amplitude of the vibration transmitted from the headrest to the head of a passenger, and even completely eliminate the vibration, thereby obviously improving the riding comfort.
Description
Technical Field
The invention relates to the technical field of vehicle seats, in particular to a method for reducing vibration of a headrest of a vehicle seat, a headrest vibration absorber and a vehicle.
Background
Vibration of the vehicle seat is an important factor affecting the riding comfort of the vehicle. Especially under the idle working condition, the vibration excitation of the vehicle engine is large and the frequency is low, so that the vibration of the seat system is easy to excite. The headrest is located at the uppermost part of the vehicle seat system, and therefore the vibration is amplified to some extent, which causes extreme discomfort to the head of the occupant. In the case of a luxury vehicle-type seat, the headrest thereof has a complicated structure, and therefore, it is more common that the headrest vibrates greatly.
In this regard, the vibration of the seat headrest is reduced in many cases by reducing the vibration of the seat at the vehicle body mounting point, changing the modal frequency of the seat, adding a power headrest absorber to the seat back, and the like, so that improvement in the riding comfort is expected. However, these prior arts including the above are all intended to indirectly reduce the vibration of the headrest by lowering the base or the backrest of the vehicle seat, and the effect obtained in practice is poor.
Disclosure of Invention
In view of the above, the present invention provides a method for reducing vibration of a headrest of a vehicle seat, a headrest vibration absorber, and a vehicle, which effectively solve or alleviate one or more of the above problems and other problems in the prior art.
First, according to a first aspect of the present invention, there is provided a method for reducing vibration of a headrest for a vehicle seat, the method comprising the steps of:
carrying out a vehicle seat modal test to obtain modal characteristics of the vehicle seat;
carrying out a vehicle seat vibration test to obtain the maximum amplitude of the vehicle seat headrest under the idling working condition of the vehicle;
determining parameters of the headrest absorber according to the modal characteristics, the maximum amplitude, and the weight and size of the headrest of the vehicle seat, wherein the parameters comprise the resonant frequency, the weight, the installation direction and size and the clearance with the periphery of the headrest absorber; and
the headrest absorber is manufactured according to the parameters and mounted on the headrest of the vehicle seat.
In the method according to the present invention, optionally, the method further comprises the steps of: and debugging and optimizing the headrest vibration absorber after the headrest vibration absorber is arranged on the headrest of the vehicle seat, so that the vibration absorbing effect of the headrest vibration absorber within the preset deviation range of the resonance frequency can reach the expectation.
In the method according to the present invention, optionally, the debugging optimization comprises: and adjusting the set resonance frequency and/or the set weight so that the shock absorption effect of the headrest shock absorber within the preset deviation range of the resonance frequency can reach the expectation.
In the method according to the invention, optionally, the vehicle seat modal test is tested by using a force hammer, an acceleration sensor, a signal collector and transfer function analysis software, the direction of the vehicle seat modal test is the front-back direction of an inserted link of a headrest of a vehicle seat, the excitation point of the force hammer is located at the middle position of the inserted link, and the loading state of the vehicle seat comprises the state that at least two passengers with different heights and weights are seated and lean on the backrest and the headrest of the vehicle seat.
In the method according to the invention, optionally, the modal frequency average of each occupant in the loaded state of the vehicle seat is calculated as the resonance frequency.
In the method according to the invention, optionally, the vehicle seat vibration test is performed using an acceleration sensor, a signal collector and spectrum analysis software, and the vehicle seat vibration test point is the front-back direction of a plug rod of a headrest of the vehicle seat.
In the method according to the invention, optionally, the clearance of the headrest vibration absorber from the periphery is determined according to the maximum amplitude, and when the clearance exceeds a preset clearance range, the headrest vibration absorber is limited by providing a bracket for the headrest vibration absorber and/or providing a flexible material on the surface of the headrest vibration absorber.
In the method according to the invention, optionally, the flexible material comprises felt, rubber.
Secondly, according to a second aspect of the present invention, there is provided a headrest vibration absorber for reducing vibration of a headrest of a vehicle seat, the headrest vibration absorber being made according to any one of the above-described methods for reducing vibration of a headrest of a vehicle seat.
Further, according to a third aspect of the present invention, there is also provided a vehicle having at least one vehicle seat provided with the headrest vibration absorber as described above.
The principles, features, characteristics, advantages and the like of various aspects according to the present invention will be clearly understood from the following detailed description taken in conjunction with the accompanying drawings. For example, compared with the prior art, the technical scheme of the invention can directly reduce the vibration of the headrest, greatly reduce the amplitude of the vibration transmitted from the headrest to the head of a passenger, and even completely eliminate the vibration, thereby obviously improving the riding comfort.
Drawings
The present invention will be described in further detail below with reference to the drawings and examples, but it should be understood that the drawings are designed solely for purposes of illustration and are not necessarily drawn to scale, but rather are intended to conceptually illustrate the structural configurations described herein.
Fig. 1 is a basic flow diagram of an embodiment of a method for reducing vibration of a vehicle seat headrest according to the present invention.
Some technical parameters in the embodiment of fig. 1 are shown in the table shown in fig. 2.
Fig. 3 is a schematic front view of a headrest absorber according to the present invention mounted to a vehicle seat.
Detailed Description
First, it should be noted that the method for reducing vibration of a headrest for a vehicle seat, the headrest absorber, the steps, the constitution, the features and the advantages of the vehicle, etc. of the present invention will be specifically described below by way of examples, however, all the descriptions are for illustrative purposes only and they should not be construed as forming any limitation of the present invention. Furthermore, any single feature described or implicit in an embodiment or any single feature shown or implicit in the drawings or shown or implicit in the drawings, may still allow any combination or permutation to continue between the features (or their equivalents) without any technical barriers and thus further embodiments according to the invention should also be considered within the scope of this disclosure.
Fig. 1 schematically illustrates a basic flow of an embodiment of a method for reducing vibrations of a vehicle seat headrest according to the present invention, and fig. 2 is a table showing some technical parameters of the embodiment of fig. 1, and the method for reducing vibrations of a vehicle seat headrest according to the present invention will be described in detail with reference to the two drawings.
In this given embodiment, the method for reducing vibration of a vehicle seat headrest may include the steps of:
first, in step S11, a vehicle seat modal test is performed to obtain modal characteristics of the vehicle seat.
By way of example only, vehicle seat modal testing may be performed using a force hammer, an acceleration sensor, a signal collector, and transfer function analysis software. In an alternative case, for example, the direction of the modal test of the vehicle seat may be set to the front-rear direction of the insert rod of the headrest of the vehicle seat, the excitation point of the force hammer may be located at the middle position of the insert rod, the frequency resolution of the frequency response function analysis may be set to 0.5Hz, the loading state of the vehicle seat includes the states in which at least two occupants having different heights and weights are seated and lean against the backrest and the headrest of the vehicle seat, the modal frequency average of each occupant in the loading state of the vehicle seat may be calculated, and the modal frequency average may be taken as the resonance frequency of the headrest vibration absorber to be discussed below.
In addition, in an optional case, it is also possible to further perform tuning optimization after the headrest absorber is mounted to the headrest of the vehicle seat so as to make the vibration-absorbing effect of the headrest absorber within the preset deviation range of the resonance frequency as expected. For example, in fig. 2, it is shown that when tuning is performed for the headrest vibration absorber, it is evaluated whether the actual vibration damping effect is expected within a range of 10% deviation of the resonance frequency.
In addition, in the above tuning optimization, it is optional to appropriately adjust the set resonance frequency or the weight of the headrest vibration absorber (such as the weight of the vibration absorbing mass therein) so as to achieve the desired vibration absorbing effect of the headrest vibration absorber within the preset deviation range of the resonance frequency. For example, it is also shown in fig. 2 whether the actual vibration-damping effect within a range of 5% deviation of the weight of the vibration-absorbing mass in the headrest vibration absorber can be taken into account to make a corresponding adjustment so that the vibration-absorbing effect is finally expected.
Next, in step S12, a vehicle seat vibration test may be performed to obtain a maximum amplitude of the vehicle seat headrest at the vehicle in the idle condition. More specifically, the vibration test of the vehicle seat is mainly performed for the purpose of ensuring that the headrest vibration absorber can freely vibrate without interference from the surroundings under the idling condition of the vehicle, so that the vibration absorbing function is achieved.
As an exemplary illustration, the vehicle seat vibration test may be performed using an acceleration sensor, a signal collector, and spectrum analysis software. In an alternative case, for example, the vehicle seat vibration test point may be disposed in the front-rear direction of the plunger of the headrest of the vehicle seat, and the frequency resolution of the spectral analysis may be 1.0 Hz.
Next, in step S13, parameters of the headrest absorber, including the resonant frequency, the weight, the mounting direction and the size of the headrest absorber, and the clearance from the periphery, are determined based on the modal characteristics of the vehicle seat, the maximum amplitude of the headrest of the vehicle seat when the vehicle is in the idle condition, and the weight and the size of the headrest of the vehicle seat obtained in the previous step.
As an exemplary illustration, the vibration absorbing mass in the headrest vibration absorber can be set to 15% of the headrest weight. In an alternative case, the modal frequency average value of each occupant in the loaded state of the vehicle seat, which has been calculated heretofore, may be taken as the resonance frequency of the headrest absorber. After the weight and the resonance frequency of the vibration-absorbing mass have been determined, the stiffness of the rubber springs that can be used to mount the headrest vibration absorber to the headrest can also be determined. For example, the mounting direction of the headrest absorber may be set to the front-rear direction X as the main direction.
Further, in an alternative case, the gap between the headrest absorber and the periphery may be determined according to the maximum amplitude of the headrest of the vehicle seat when the vehicle is in an idle condition, and the predetermined gap range (for example, a predetermined gap range) may be exceeded in the gap+0.1 mm), the headrest absorber can be provided with a bracket for hard limiting of the headrest absorber, and/or a flexible material (such as felt, rubber, etc.) can be provided on the surface of the headrest absorber for soft limiting of the headrest absorber, so as to avoid the headrest absorber from impacting peripheral parts under bumpy road conditions to generate undesirable abnormal sound.
Subsequently, in step S14, the headrest vibration absorber is manufactured based on the parameters obtained in step S13 and then mounted to the headrest of the vehicle seat, thereby achieving a good technical effect of vibration damping and absorption.
The mounting of a headrest absorber according to the invention to a vehicle seat is shown in figure 3 only in a schematic manner. As shown in fig. 3, the vibration absorbing mass 1 of the headrest vibration absorber can be attached to the frame 2 of the headrest of the vehicle seat via 4 rubber springs 3, which headrest is to be inserted onto the vehicle seat via the plug rods 4 of the 2 vehicle seat headrests. According to a large number of practical tests, it is shown that when a headrest vibration absorber according to the present invention having a weight of about 0.3kg is applied, the vibration of the headrest of the seat of the vehicle at the time of idling of the vehicle can be reduced by 10dB, which is 2 times as much as the vibration reduction effect generally achieved by applying the prior art, and the weight is only 50% thereof.
In view of the technical advantages of the method for reducing vibration of a headrest of a vehicle seat, such as those mentioned above, the method is very suitable for wide application, so that the vibration of the headrest can be effectively reduced, the amplitude of the vibration transmitted from the headrest to the head of an occupant can be greatly reduced, and even the vibration can be completely eliminated, and the riding comfort and user satisfaction can be remarkably improved.
In addition, according to still another aspect of the present invention, there is also provided a headrest vibration absorber for reducing vibration of a headrest of a vehicle seat, the headrest vibration absorber being manufactured by the method for reducing vibration of a headrest of a vehicle seat provided according to the present invention, and by using such a headrest vibration absorber, vibration of the headrest can be significantly reduced, achieving excellent technical effects of vibration-reducing and absorbing.
In addition, the present invention also provides a vehicle having at least one vehicle seat equipped with a headrest absorber designed to be provided according to the present invention, so as to fully exploit the technical advantages of the present invention, such as those discussed above, which are significantly superior to the prior art.
The method for reducing vibration of a headrest of a vehicle seat, the headrest absorber and the vehicle according to the present invention have been explained in detail by way of examples only, and these examples are provided only for illustrating the principles of the present invention and the embodiments thereof, not for limiting the present invention, and those skilled in the art can make various modifications and improvements without departing from the spirit and scope of the present invention. Accordingly, all equivalents are intended to be included within the scope of this invention and defined in the claims which follow.
Claims (10)
1. A method for reducing vibration in a vehicle seat headrest, the method comprising the steps of:
carrying out a vehicle seat modal test to obtain modal characteristics of the vehicle seat;
carrying out a vehicle seat vibration test to obtain the maximum amplitude of the vehicle seat headrest under the idling working condition of the vehicle;
determining parameters of the headrest absorber according to the modal characteristics, the maximum amplitude, and the weight and size of the headrest of the vehicle seat, wherein the parameters comprise the resonant frequency, the weight, the installation direction and size and the clearance with the periphery of the headrest absorber; and
the headrest absorber is manufactured according to the parameters and mounted on the headrest of the vehicle seat.
2. The method of claim 1, wherein the method further comprises the steps of: and debugging and optimizing the headrest vibration absorber after the headrest vibration absorber is arranged on the headrest of the vehicle seat, so that the vibration absorbing effect of the headrest vibration absorber within the preset deviation range of the resonance frequency can reach the expectation.
3. The method of claim 2, wherein the commissioning optimization comprises: and adjusting the set resonance frequency and/or the set weight so that the shock absorption effect of the headrest shock absorber within the preset deviation range of the resonance frequency can reach the expectation.
4. The method of claim 1, wherein the vehicle seat modal test is tested using a force hammer, an acceleration sensor, a signal collector, and transfer function analysis software, the direction of the vehicle seat modal test is a forward-backward direction of a plunger of a headrest of a vehicle seat, an excitation point of the force hammer is located at a middle position of the plunger, and a loading state of the vehicle seat includes a state where at least two occupants with different heights and weights are seated and lean against a backrest and the headrest of the vehicle seat.
5. The method according to claim 4, wherein the resonant frequency is calculated as an average of modal frequencies of each occupant in a loaded state of the vehicle seat.
6. The method of claim 1, wherein the vehicle seat vibration test is performed using an acceleration sensor, a signal collector and spectrum analysis software, and the vehicle seat vibration test point is a front-to-rear direction of a plug rod of a headrest of the vehicle seat.
7. The method according to claim 1, wherein the clearance of the headrest vibration absorber from the periphery is determined according to the maximum amplitude, and the headrest vibration absorber is restrained by providing a bracket for the headrest vibration absorber and/or providing a flexible material on the surface of the headrest vibration absorber when the clearance exceeds a preset clearance range.
8. The method of claim 7, wherein the flexible material comprises felt, rubber.
9. A headrest vibration absorber for reducing vibration of a headrest of a vehicle seat, wherein the headrest vibration absorber is manufactured by the method for reducing vibration of a headrest of a vehicle seat according to any one of claims 1 to 8.
10. A vehicle characterized in that at least one vehicle seat of the vehicle is provided with the headrest vibration absorber as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810600230.XA CN110588469A (en) | 2018-06-12 | 2018-06-12 | Method for reducing vibrations in a vehicle seat headrest, headrest vibration absorber and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810600230.XA CN110588469A (en) | 2018-06-12 | 2018-06-12 | Method for reducing vibrations in a vehicle seat headrest, headrest vibration absorber and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110588469A true CN110588469A (en) | 2019-12-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810600230.XA Pending CN110588469A (en) | 2018-06-12 | 2018-06-12 | Method for reducing vibrations in a vehicle seat headrest, headrest vibration absorber and vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114720072A (en) * | 2021-01-05 | 2022-07-08 | 广州汽车集团股份有限公司 | Seat bending modal frequency testing method and system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10226255A (en) * | 1997-02-17 | 1998-08-25 | Aichi Mach Ind Co Ltd | Head rest |
| CN104111156A (en) * | 2014-06-10 | 2014-10-22 | 重庆长安汽车股份有限公司 | Seat modal testing method |
| CN104661864A (en) * | 2012-09-25 | 2015-05-27 | 丰田自动车株式会社 | Headrest and vehicle seat provided with same |
| CN104661869A (en) * | 2012-09-25 | 2015-05-27 | 丰田自动车株式会社 | Headrest and vehicle seat equipped with same |
| CN106740329A (en) * | 2016-12-08 | 2017-05-31 | 上汽通用汽车有限公司 | Car seat headrest |
-
2018
- 2018-06-12 CN CN201810600230.XA patent/CN110588469A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10226255A (en) * | 1997-02-17 | 1998-08-25 | Aichi Mach Ind Co Ltd | Head rest |
| CN104661864A (en) * | 2012-09-25 | 2015-05-27 | 丰田自动车株式会社 | Headrest and vehicle seat provided with same |
| CN104661869A (en) * | 2012-09-25 | 2015-05-27 | 丰田自动车株式会社 | Headrest and vehicle seat equipped with same |
| CN104111156A (en) * | 2014-06-10 | 2014-10-22 | 重庆长安汽车股份有限公司 | Seat modal testing method |
| CN106740329A (en) * | 2016-12-08 | 2017-05-31 | 上汽通用汽车有限公司 | Car seat headrest |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114720072A (en) * | 2021-01-05 | 2022-07-08 | 广州汽车集团股份有限公司 | Seat bending modal frequency testing method and system |
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Application publication date: 20191220 |
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