CN115219124B - Buckle performance testing device and method and automobile interior system - Google Patents
Buckle performance testing device and method and automobile interior system Download PDFInfo
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- CN115219124B CN115219124B CN202110434947.3A CN202110434947A CN115219124B CN 115219124 B CN115219124 B CN 115219124B CN 202110434947 A CN202110434947 A CN 202110434947A CN 115219124 B CN115219124 B CN 115219124B
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- 238000012360 testing method Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000006073 displacement reaction Methods 0.000 claims abstract description 20
- 238000011056 performance test Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 8
- 230000002159 abnormal effect Effects 0.000 abstract description 7
- 238000013461 design Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 230000005483 Hooke's law Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0066—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by exciting or detecting vibration or acceleration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
- B60R13/02—Internal Trim mouldings ; Internal Ledges; Wall liners for passenger compartments; Roof liners
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/025—Measuring arrangements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/06—Multidirectional test stands
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The invention relates to the field of buckles, and discloses a buckle performance testing device and method and an automobile interior system, wherein the method comprises the following steps: the clamping component and the force measuring component vibrate relatively according to the designated frequency and the designated amplitude, wherein the force measuring component is provided with a clamping installation hole component which is matched with the clamping component in shape; when the clamping component or the force measuring component is positioned at a position point where the vibration displacement is zero, the zero acting force of the clamping component contacts the clamping mounting hole component; the force data generated when the relative vibration occurs is measured through the force measuring component; and determining the performance result of the buckle component according to the stress data. The invention can effectively screen the buckle products meeting the target design requirements, improve the installation reliability of the interior trim and reduce the abnormal sound generated by the interior trim parts.
Description
Technical Field
The invention relates to the field of buckles, in particular to a buckle performance testing device and method and an automobile interior system.
Background
In automotive interior systems, a snap-fit connection is often used between different interior components. There are many types of snaps available for selection in designing interior trim components. During the running of the automobile, the excitation generated by different roads to the automobile body is at least partially transmitted to the interior parts through the buckles. If the connection rigidity of the buckle is insufficient, different parts connected through the buckle are subjected to relative displacement, and knocking or friction abnormal sound is generated.
Existing snap performance is typically characterized by a pull-in force. However, the plugging force can only reflect the strength of the connection capability of the interior trim component, but cannot reflect the connection rigidity of the buckle, and cannot solve the problem that abnormal sound occurs in the interior trim component. Therefore, a new method for testing the performance of the buckle needs to be found, and the connection rigidity of different types of buckles is represented, so that the buckle type meeting the rigidity requirement can be selected conveniently, and abnormal sound of the interior trim part caused by insufficient connection rigidity is prevented.
Disclosure of Invention
Accordingly, in order to solve the above-mentioned problems, it is necessary to provide a device and a method for testing performance of a buckle, and an automotive interior system, so as to measure the connection stiffness of the buckle, and prevent abnormal sound of the interior component caused by insufficient connection stiffness.
A buckle performance testing device comprises a buckle clamp, a driving part and a force measuring part;
The clamping clamp is used for fixing the clamping component;
The driving component is used for driving the force measuring component or the clamping fixture according to the designated frequency and the designated amplitude so that the clamping component and the force measuring component vibrate relatively;
the force measuring component is provided with a buckle mounting hole component which is matched with the buckle component in shape, and the force measuring component is used for measuring stress data generated when the buckle component and the force measuring component vibrate relatively.
The buckle performance testing method is applied to any one of the buckle performance testing devices, and comprises the following steps:
The method comprises the steps that a buckle component and a force measuring component vibrate relatively according to a designated frequency and a designated amplitude, wherein the force measuring component is provided with a buckle mounting hole component which is matched with the buckle component in shape; when the clamping component or the force measuring component is positioned at a position point with zero vibration displacement, the zero acting force of the clamping component contacts the clamping mounting hole component;
Measuring stress data generated when relative vibration occurs through the force measuring component;
and determining the performance result of the buckle component according to the stress data.
An automotive interior system comprises a plurality of interior parts connected through buckles, wherein the performance of at least one buckle is tested by any buckle performance testing method.
According to the buckle performance testing device and method and the automobile interior system, the connection performance of the buckle is represented by the connection rigidity, so that buckle products meeting target design requirements can be effectively screened, the installation reliability of the interior is improved, and abnormal sounds generated by interior parts are reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments of the present invention will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a device for testing performance of a buckle according to an embodiment of the present invention;
FIG. 2 is a flow chart illustrating a method for testing performance of a buckle according to an embodiment of the invention;
Fig. 3 is a stiffness-frequency plot in an embodiment of the invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In one embodiment, as shown in fig. 1, a snap performance testing device is provided, comprising a snap clamp 04, a driving member (not shown) and a force measuring member 07;
a clip 04 for fixing the clip member 08;
the driving component is used for driving the force measuring component or the clamping fixture according to a specified frequency and a specified amplitude to enable the clamping component 08 and the force measuring component 07 to vibrate relatively;
The force measuring member 07 is provided with a snap fit hole member 03 shape-fitted with the snap member 08, and the force measuring member 07 is used for measuring force data generated when the snap member 08 and the force measuring member 07 vibrate relatively.
Understandably, the snap clamp 04 is used to fix the position of the snap member 08. The snap clamp 04 refers to a clamp that fits with the snap member 08. The snap fit hole member 03, which is shape-fitted to the snap member 08, corresponds to a positioning member.
The driving part may be a motor capable of reciprocating. The designated frequency can be set according to actual needs. In some cases, the vibration frequency that is common in automobiles may be set to a specified frequency. The specified amplitude can be set according to actual needs. In some cases, the specified amplitude is related to the shape, size, and material of the clasp member 08.
The relative vibration of the snap-in part 08 and the force measuring part 07 includes two conditions, one is that the snap-in part 08 reciprocates (driven by the driving part) to generate vibration, and the force measuring part 07 is kept stationary; the other is that the snap-in part 08 remains stationary and the force-measuring part 07 reciprocates (driven by the driving part) and generates vibrations.
The force measuring member 07 is provided with a snap fit hole member 03 shape-fitted with the snap member 08. The snap fitting hole member 03 corresponds to a snap positioning member, and here functions to position the snap member 08. The force measuring member 07 is provided with a pressure sensor, and can measure stress data generated when the click member 08 and the force measuring member 07 vibrate relatively.
The force data can be processed with reference to hooke's law to generate the connection stiffness of the buckle. The connection stiffness of the clasp can be expressed as:
k＝ΔF/Δx
wherein k is the connection rigidity of the buckle, deltaF is stress data, and Deltax is vibration displacement.
Optionally, as shown in fig. 1, the buckle performance testing device is further provided with a first fixing seat 02, and the buckle fixture 04 is detachably mounted on the first fixing seat 02.
Understandably, the snap performance testing device is further provided with a first fixing base 02, and the first fixing base 02 is used for fixing the position of the snap clamp 04. The buckle fixture 04 is detachably mounted on the first fixing seat 02 and is fixed through a fixing piece 05. In an example, the first fixing base 02 may be plate-shaped, and the fixing member 05 includes a bolt and a nut.
Optionally, as shown in fig. 1, the buckle performance testing device is further provided with a second fixing seat 01, and the buckle installation hole component 03 is detachably installed on the second fixing seat 01.
Understandably, the snap performance testing device is further provided with a second fixing base 01, and the second fixing base 01 is used for fixing the position of the mounting hole component 03. The buckle mounting hole part 03 is detachably mounted on the second fixing seat 01 and is fixed through a fixing piece 06. In an example, the second fixing base 01 may be plate-shaped, and the fixing member 06 includes a bolt and a nut.
In some examples, the second fixing base 01 and the force-measuring component 07 may be of an integrated design, i.e. the two components are one and the same component.
Alternatively, the clasp part 08 may be a clasp fastener.
The buckle comprises two kinds of connecting pieces of locating piece and fastener. The positioning piece refers to a connecting piece which can lead the buckle to smoothly, correctly and quickly reach the installation position during installation. The fastener means a connecting member which is separable from the positioning member when a certain separating force is applied. Here, the buckle to which the buckle part 08 belongs may be any position buckle of an automobile, such as a door panel buckle, a roof buckle, a bumper buckle, a floor buckle, a trunk buckle, a weather strip buckle, a running water tank buckle, an inner trim panel buckle, an outer trim panel buckle, a side sill buckle, a chassis buckle, a heat insulation cotton buckle, a seat buckle, a handle buckle, a strut buckle, a protection plate buckle, and the like.
Alternatively, the specified amplitude may be 0.05mm to 0.5mm.
In some cases, the specified amplitude is related to the shape, size, and material of the clasp member 08.
As shown in fig. 2, the embodiment of the present invention further provides a method for testing performance of a buckle, which is applied to any one of the above-mentioned devices for testing performance of a buckle, where the method for testing performance of a buckle includes:
S10, enabling the clamping component and the force measuring component to vibrate relatively according to a specified frequency and a specified amplitude, wherein the force measuring component is provided with a clamping installation hole component which is matched with the clamping component in shape; when the buckle part or the force measuring part is positioned at a position point with zero vibration displacement, the zero acting force of the buckle part contacts with the buckle mounting hole part.
Understandably, the relative vibration of the catch member and the force member at a specified frequency and at a specified amplitude includes two conditions, one of which is the reciprocating movement of the catch member (driven by the drive member), the force member remaining stationary; the other is that the snap member is kept stationary and the force measuring member is reciprocated (driven by the driving member). The relative vibration may be in the horizontal direction or in the vertical direction. The specified frequency and the specified amplitude can be set according to actual needs.
The force measuring part is provided with a buckle mounting hole part which is matched with the shape of the buckle part. The buckle mounting hole component is provided with a concave part which is matched with the shape of the buckle component, and the buckle component can freely enter and exit the concave part. When the buckle part or the force measuring part is positioned at the position point of zero vibration displacement, the zero acting force of the buckle part contacts with the buckle mounting hole part. At this time, the tip zero force of the snap member abuts against the hole inner bottom surface of the snap mounting hole member, or the protruding portion outer side of the snap member contacts with the edge of the snap mounting hole member concave portion.
And S20, measuring stress data generated when the relative vibration occurs through the force measuring component.
The force measuring component is provided with a pressure sensor, so that stress data generated when the clamping component and the force measuring component vibrate relatively can be measured. The force data includes the (relative) vibration displacement of the buckle and the force corresponding to the vibration displacement.
S30, determining the performance result of the buckle component according to the stress data.
Understandably, the performance result of the snap feature may refer to the connection stiffness of the snap. The connection stiffness can be calculated from the vibration displacement and the force in the force data. The connection rigidity of the buckle obtained through testing in the embodiment can be directly used for parameter setting of the interior trim buckle in finite element simulation calculation (CAE, computer AIDED ENGINEERING), and the calculation accuracy of the CAE simulation is greatly improved.
S10-S30, enabling the buckling component and the force measuring component to vibrate relatively according to the designated frequency and the designated amplitude, wherein the force measuring component is provided with a buckling installation hole component which is matched with the buckling component in shape; when the clamping component or the force measuring component is positioned at a position point with zero vibration displacement, the zero acting force of the clamping component contacts the clamping mounting hole component, so that the clamping component simulates the spring to elastically vibrate. And the force measuring component is used for measuring the stress data generated when the relative vibration occurs so as to collect the stress data and measure the pressure born by the buckle component. And determining the performance result of the buckle component according to the stress data so as to calculate the connection rigidity of the buckle component, wherein the connection rigidity can better represent the performance of the buckle.
Optionally, the stress data includes vibration displacement and acting force corresponding to the vibration displacement, and the performance result includes connection rigidity;
Step S30, namely determining the performance result of the buckle component according to the stress data, includes:
s301, determining the connection rigidity of the buckle component according to the ratio of the acting force to the vibration displacement.
The force data comprises understandably the (relative) vibration displacement of the catch and the force corresponding to the vibration displacement. The performance result of the snap feature may refer to the connection stiffness of the snap. The connection stiffness of the clasp can be expressed as:
k＝ΔF/Δx
wherein k is the connection rigidity of the buckle, deltaF is stress data, and Deltax is vibration displacement.
Optionally, after step S30, that is, after the performance result of the buckle component is determined according to the stress data, the method further includes:
S40, obtaining a group of performance results of the buckle component, wherein the performance results in the group are equal in amplitude and have differences in frequency;
s50, generating comprehensive connection rigidity according to the group of performance results.
It will be appreciated that an appropriate vibration amplitude may be selected based on the shape and material of the snap-fit feature. The connection stiffness at a set of different frequencies is then measured at this vibration amplitude. The set of connection stiffness can be expressed as: k i＝ΔFi/Δx, where i is a frequency number, i=1, 2, 3, …, n is the number of the group of connection stiffness.
The overall connection stiffness of the buckle may be calculated based on the set of performance results. The integrated connection stiffness may be an arithmetic average sum, a weighted average sum of connection stiffnesses at different frequencies, or an equivalent connection stiffness calculated by an equal area method.
Optionally, step S50, that is, generating the integrated connection stiffness according to the set of performance results, includes:
S501, generating a connection stiffness-frequency curve according to the group of performance results;
s502, calculating the area of a graph formed by the connecting stiffness-frequency curve and the abscissa;
S503, determining equivalent connection rigidity according to the area and the frequency span of the graph.
It is understood that the abscissa of the stiffness-frequency curve is frequency and the ordinate is the connection stiffness. As shown in fig. 3, in the example of fig. 3, curve k i is a stiffness-frequency curve, and dashed line k a represents an equivalent connected stiffness line segment. The area of the graph (including the vertical lines corresponding to the two endpoints of the curve k i) enclosed by the curve k i and the abscissa is equal to the area of the graph enclosed by the equivalent connecting stiffness line segment and the abscissa.
In one example, the area of the graph enclosed by the curve k i and the abscissa can be expressed as:
Wherein Arear k is the area of the graph enclosed by the curve k i and the abscissa;
k i is the connection stiffness at the i-th frequency;
n is the total number of frequencies;
Δf i is the frequency width of the i-th frequency.
Then, the equivalent connection stiffness can be expressed as:
wherein k a is equivalent connection stiffness;
N is the frequency span of the graph enclosed by the curve k i and the abscissa, and its value is the sum of the respective frequency widths.
It should be understood that the sequence number of each step in the foregoing embodiment does not mean that the execution sequence of each process should be determined by the function and the internal logic, and should not limit the implementation process of the embodiment of the present invention.
The embodiment of the invention also provides an automotive interior system, which comprises a plurality of interior parts connected through buckles, wherein the performance of at least one buckle is tested by any buckle performance test method.
Understandably, the connection stiffness of the buckle can be effectively measured after the buckle performance test method is adopted. The buckle with too small connection rigidity can be eliminated, and abnormal sound of the interior trim part when the vehicle body vibrates due to insufficient connection rigidity of the buckle is prevented.
The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention, and are intended to be included in the scope of the present invention.
Claims (9)
1. The buckle performance testing method is characterized by being applied to a buckle performance testing device, wherein the buckle performance testing device comprises a buckle clamp, a driving part and a force measuring part; the clamping clamp is used for fixing the clamping component; the force measuring component is provided with a buckle mounting hole component which is matched with the buckle component in shape;
The buckle performance testing method comprises the following steps:
The clamping component and the force measuring component vibrate relatively according to the designated frequency and the designated amplitude through the driving component; when the clamping component or the force measuring component is positioned at a position point with zero vibration displacement, the zero acting force of the clamping component contacts the clamping mounting hole component;
Measuring stress data generated when relative vibration occurs through the force measuring component;
and determining the performance result of the buckle component according to the stress data.
2. The method of claim 1, further comprising providing a first fixing base, and removably mounting the clip on the first fixing base.
3. The method of claim 1, further comprising providing a second mounting base, wherein the snap-fit hole assembly is removably mounted to the second mounting base.
4. The method of claim 1, wherein the snap feature is a snap fastener.
5. The snap performance testing method of claim 1, wherein the specified amplitude comprises 0.05mm to 0.5mm.
6. The method of claim 1, wherein the force data comprises a vibration displacement and a force corresponding to the vibration displacement, and the performance result comprises a connection stiffness;
the determining the performance result of the buckle component according to the stress data comprises the following steps:
and determining the connection rigidity of the buckle component according to the ratio of the acting force to the vibration displacement.
7. The method of claim 1, wherein after determining the performance result of the fastener component according to the force data, further comprising:
Acquiring a group of performance results of the buckle component, wherein the performance results in the group are equal in amplitude and have differences in frequency;
And generating the comprehensive connection rigidity according to the set of performance results.
8. The method of claim 7, wherein generating the integrated connection stiffness based on the set of performance results comprises:
generating a connection stiffness-frequency curve from the set of performance results;
Calculating the area of a graph formed by the connecting stiffness-frequency curve and the abscissa;
and determining equivalent connection stiffness according to the area and the frequency span of the graph.
9. An automotive interior system comprising a plurality of interior components connected by a clasp, at least one clasp having a performance tested by the clasp performance test method of any one of claims 1 to 8.
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| CN202110434947.3A CN115219124B (en) | 2021-04-22 | 2021-04-22 | Buckle performance testing device and method and automobile interior system |
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| CN202110434947.3A CN115219124B (en) | 2021-04-22 | 2021-04-22 | Buckle performance testing device and method and automobile interior system |
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| CN115219124B true CN115219124B (en) | 2024-06-14 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106908205A (en) * | 2017-03-09 | 2017-06-30 | 北京理工大学 | A kind of test device of engine mounting dynamic stiffness |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201293722Y (en) * | 2008-09-24 | 2009-08-19 | 比亚迪股份有限公司 | Fastener testing stand |
| GB201414160D0 (en) * | 2014-08-11 | 2014-09-24 | Jaguar Land Rover Ltd | Dynamic stiffness measurement apparatus and method |
| CN106950018B (en) * | 2017-02-08 | 2019-06-28 | 上海工程技术大学 | A kind of Flexible element dynamic rate measurement method and device |
| CN210198617U (en) * | 2019-08-02 | 2020-03-27 | 保光(天津)汽车零部件有限公司 | Buckle plug-in force test fixture |
| CN210689886U (en) * | 2019-08-30 | 2020-06-05 | 武汉中新汽车零部件有限公司 | Clamp for testing insertion and extraction force of buckle |
| CN110987332A (en) * | 2019-12-31 | 2020-04-10 | 上海工程技术大学 | High-frequency dynamic stiffness testing machine for railway fastener |
| CN110987331A (en) * | 2019-12-31 | 2020-04-10 | 上海工程技术大学 | Transverse dynamic loading device for high-frequency rigidity test of railway fastener |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106908205A (en) * | 2017-03-09 | 2017-06-30 | 北京理工大学 | A kind of test device of engine mounting dynamic stiffness |
Non-Patent Citations (1)
| Title |
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| "汽车副仪表板异响分析及研究";李世杰 等;《机械设计与制造》;20200731(第7期);183-186+190 * |
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