JP2006126125A - Vibration tester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vibration tester to vibrate a test object even in an energization state by tightening the small-sized test object to be vibrated in a very short period of time, easily giving complicated vibration such as reciprocation, rotation and torsion to the test object, and making a vibration test in a production line. <P>SOLUTION: In first embodiment, the vibration tester 10A comprises: a tightening part 2 capable of being tightened to a part of the test object to be vibrated T; a vibration unit 1 for integrally forming a vibration generation part 3 for generating one-directional vibration at a side different from the side of the tightening part 2; a vibration control part 4 for controlling vibration of the vibration generation part 3; and a power source energized to the vibration control part 4. When a test object to be vibrated Tp on a plane is tested, for instance, vibration units 1A and 1B are tightened on right and left sides of the test object to be vibrated Tp to be controlled under the vibration control part 4 to generate composition vibration such as reciprocation, rotation, compression, tension and torsion on the test object Tp so as to be tested. The tester is usable for a rectangular parallelepiped object. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention can apply vibration to the vibration test object to inspect whether the vibration test object such as an electronic device can withstand various mechanical vibrations before shipping to the market. The present invention relates to a vibration test apparatus.

  In recent years, electronic devices have become thinner and smaller, and the importance of quality control of such electronic devices has increased, and improvements such as improvement in quality evaluation accuracy and shortening of time have been demanded.

  Vibration testing has been used as one of the quality control methods, but it is fundamental to perform a vibration test by extracting a predetermined number of vibration test specimens from one production lot and shaking them. .

  However, in such a vibration test by sampling, the lag time between the clarification of the test result and production and shipment occurs, and if the result of the sampling test fails, the defective product can be recovered and the production process improved. A large loss occurred, such as spending a lot of time.

The main reason for performing several vibration test samples from a production lot in order to conduct vibration tests is as follows:
1) The vibration unit or vibration test equipment including it is large, and special facilities are required for vibration countermeasures. 2) The vibration test equipment is expensive, and possessing multiple facilities puts pressure on management. 3) Need for specialized knowledge in handling vibration test equipment and analyzing vibration test results.

  As an example of the vibration test apparatus of the prior art as described above, a vibration test apparatus as disclosed in the following [Patent Document 1] (Japanese Patent Laid-Open No. 2001-174362) can be cited.

Further, the following [Patent Document 2] (Japanese Patent Laid-Open No. 10-132897) discloses a hand-held sine wave vibration test apparatus, but the vibration test by sampling is the main use and is a hand-held type. The above use was difficult. The vibration excitation area is also limited to a limited part such as a board solder portion.
JP 2001-174362 (pages 3 to 4, FIG. 1) Japanese Patent Application Laid-Open No. 10-132897 (page 3, FIG. 1)

  For various reasons as described above, improvement in quality evaluation accuracy and shortening of time by a vibration test apparatus that can be carried out on a production line are eagerly desired by the industry.

  In the vibration test of the prior art, the vibration test in the power supply driving state is not performed due to the difficulty of power supply and signal supply to the vibration test object such as an electronic device, thereby improving the accuracy of quality evaluation. It was an obstacle.

  Further, since the entire electronic device is vibrated, for example, in a flat display device (flat panel display device) such as an LCD or a PDP, it is impossible to monitor a display image at the time of vibration and to evaluate an image quality by photographing with a camera. .

  Furthermore, to change the amplitude, frequency, and vibration direction of the vibration test device with respect to the vibration test object, and to obtain multi-dimensional data of the vibration test, change the method of fixing the vibration test object or set the vibration test device. A lot of man-hours and time, such as changes, are required, which causes an increase in quality evaluation costs and an increase in time until an evaluation result is obtained.

  Furthermore, a vibration test apparatus that automatically changes these changes is a very expensive facility, which in turn increases production costs.

  Furthermore, there is no vibration test apparatus that can easily obtain torsional vibration.

  The present invention is intended to solve these problems, and is compact and can be fastened to a vibration test specimen in a very short time, and can easily perform complex vibrations such as reciprocation, rotation, and twisting on the vibration test specimen. An object of the present invention is to obtain a vibration test apparatus that can be applied to the above.

  Therefore, in the vibration test apparatus according to the first aspect of the present invention, the fastening part that can be fastened to a part of the vibration test object and the vibration generating part that generates vibration in one direction on a side different from the fastening part side are integrated. The vibration unit is formed, a vibration control unit that controls the vibration of the vibration generation unit, and a power source that supplies power to the vibration control unit.

  The vibration test apparatus according to the second aspect of the present invention uses one or a plurality of the vibration units according to the shape of the vibration test object. It is characterized in that it can be set to generate a required composite vibration by individually changing the mounting direction with respect to, and can be set to a required composite vibration waveform by individually setting the vibration intensity, vibration frequency and phase.

  Further, in the vibration test apparatus according to the third aspect of the present invention, the vibration test object has a flat plate shape, and the vibration units are fastened to the left and right of the plate-shaped vibration test object, respectively. Reciprocating vibration to the flat plate-like object under vibration by controlling the vibration excitation force, vibration frequency, acceleration and phase of the vibration generation unit of the vibration generation unit with the vibration control unit being the same. It is characterized by generating a synthetic vibration of

  Further, in the vibration testing apparatus according to the fourth aspect of the present invention, the vibration test object has a flat plate shape, and the vibration units are fastened to the left and right of the plate-shaped vibration test object, respectively. The vibration excitation force, vibration frequency, and acceleration of the vibration generation unit of the unit are the same, and the phase is shifted by 180 degrees. A combined rotational vibration is generated with the center of rotation.

  Furthermore, in the vibration test apparatus according to the present invention, the vibration test object is a flat plate, and the one vibration unit is placed in a vibration direction at a corner portion of the flat vibration test object. Fasten the other vibration unit in the X-axis direction so that the vibration direction is in the Y-axis direction, and the vibration generating force, vibration frequency, acceleration, and A combined vibration in an oblique direction is generated in the flat plate-like vibration test piece by exciting and controlling the vibration control unit with the same phase.

  Furthermore, the vibration test apparatus according to the present invention described in claim 6, wherein the vibration test object is a rectangular parallelepiped shape, and the three vibration units are fastened to the rectangular parallelepiped vibration test object. In addition, the vibration excitation force, the vibration frequency, the acceleration, and the phase are made the same, and the vibration is controlled by generating vibration in the rectangular parallelepiped vibration test specimen.

  Still further, in the vibration testing apparatus according to the seventh aspect of the present invention, the vibration test object has a rectangular parallelepiped shape, and the first vibration unit is placed on one surface of the rectangular parallelepiped vibration test object. The second and third vibration units are fastened to other surfaces adjacent to each other, the vibration excitation force, the vibration frequency, and the acceleration are made the same for the vibration units, and the phases of the second and third vibration units are the same. The torsional vibration is generated inside the rectangular parallelepiped vibration to be tested by exciting and controlling only 180 degrees.

  Furthermore, in the vibration test apparatus according to the present invention described in claim 8, the vibration test object has a rectangular parallelepiped shape, and the first and second vibration units are provided on one surface of the rectangular parallelepiped vibration test object. The rectangular parallelepiped shape is obtained by fastening, making the vibration excitation force, the vibration frequency, and the acceleration the same to those vibration units, and exciting and controlling only the phases of the second and third vibration units by 180 degrees from each other. It is characterized in that a combined vibration of compression and tension is generated in the vibration test specimen.

  Still further, the vibration test apparatus according to the present invention described in claim 9 includes a test stand provided with a fixing means for fixing a flat panel display device as a vibration test object on a horizontal mounting surface, and the flat panel. At least one vibration unit in which a fastening portion that can be fastened to a part of the display device and a vibration generating portion that generates vibration in one direction on a side different from the fastening portion side is integrally formed and fixed to the test stand And a vibration control means for controlling the vibration of the vibration generating section, and a power supply for energizing the flat panel display device fixed on the vibration control section and the test table.

  The fastening means may be selected from a magnet, a suction cup, a vacuum suction, a toggle clamp, a bolt fastening, a nut fastening, a fitting type, and the like according to the material and surface state of the vibration test object. The piezoelectric element, air drive, hydraulic drive, electromagnetic vibration type, or the like may be selected and used.

  Therefore, according to the vibration test apparatus of the present invention, it is small and can be fastened to the vibration test object in a very short time, and complex vibrations such as reciprocation, rotation, and vibration can be easily performed on the vibration test object. Can be given.

  And since it is small and there is little possibility of protrusion from a to-be-vibrated test object, the vibration test on a production line is attained.

  In addition, since the vibration test object can be vibrated even in the energized state, the inspection items can usually be performed in the vibration state, and the evaluation accuracy of the inspection can be further improved.

According to the vibration test apparatus of the present invention,
1. If the vibration test object is an electronic device, the vibration test object can be vibrated and evaluated in the energized state, so that it is possible to inspect even a complex defect caused by vibration, and the quality evaluation accuracy is improved. According to the above item 1, the outflow of defective products to the market is prevented, and it is possible to reduce the cost related to product recovery. According to the above 1), abnormalities in the production process are detected early, and a large number of defective products can be prevented in advance, and manufacturing costs can be reduced. Since the vibration evaluation within the production line can be performed, the occurrence of defective products can be detected at an early stage, and the costs and costs of items 2 and 3 can be reduced as well. Since the vibration test apparatus of the present invention is low in price, the introduction cost can be greatly reduced, and the choice of management fund management is expanded. Since the excitation evaluation can be judged as a failure of the target output of the vibration test object, no special analysis device is required, and the introduction cost can be greatly reduced. In addition, there is no need for special education, and the selection of personnel and labor policies is expanded. Arbitrary vibrations such as compression and tension can be generated easily, so that the optimum vibrations can be applied to the object to be vibrated in a short time even if special analysis or simulation is performed. Vibration test equipment that can output vibration excitation force, vibration frequency, and acceleration appropriately enables vibration tests on ships, bills, bridges, etc. that are generally difficult to perform vibration tests. Numerous excellent effects can be obtained such as safety and structural evaluation can be performed with high accuracy.

  Hereinafter, the configuration and structure of the vibration test apparatus of the present invention will be described with reference to the drawings. The vibration test apparatus according to the present invention includes a vibration unit in which a fastening portion that can be fastened to a part of a vibration test object and a vibration generating portion that generates vibration in one direction on a side different from the fastening portion side are integrally formed. It is characteristic that it is composed at the center.

  Hereinafter, the vibration test apparatus of each Example of this invention is demonstrated.

  First, the configuration and structure of the vibration test apparatus according to the first embodiment of the present invention will be described with reference to FIGS.

  FIG. 1 is a perspective view of a vibration unit serving as the center of the configuration of the vibration test apparatus of the present invention, FIG. 2 is a block diagram of the vibration test apparatus of the first embodiment of the present invention, and FIG. 3 is a vibration unit shown in FIG. FIG. 3A is a perspective view showing a fastening portion of a vibration unit and a back surface of the vibration test object, and FIG. B is a view showing fastening of the vibration unit. The perspective view which showed the relationship between the one fastening pin of a part and the one fastening hole formed in the back surface of a to-be-vibrated test object, the same figure C is fastening of a vibration unit to the fastening hole of the to-be-vibrated test object shown to the same figure B It is the perspective view which showed the state which penetrated the pin and was fixed.

  As shown in FIG. 2, the vibration test apparatus 10A according to the first embodiment of the present invention includes vibration generators 3A and 3B constituting a part of the vibration unit 1 described later with reference to FIG. The vibration control unit 4 to be controlled and a power source (not shown) for energizing the vibration control unit 4 are provided. In FIG. 2, only the vibration generating units 3A and 3B of the two vibration units 1 and one vibration control unit 4 for controlling them in common are shown. However, the number of the vibration generating units 3 may be one, Three or more may be used in combination.

  As shown in FIG. 1, the vibration unit 1 includes a fastening part 2 that can be fastened to a part of the vibration test object and a vibration generating part 3 that generates vibration in one direction on a side different from the fastening part 2 side. It is the thing of the structure formed in. In the vibration generating unit 3, vibration excitation force, vibration frequency, and acceleration are arbitrarily adjusted under the control of the vibration control unit 4.

  An example of the fastening part 2 is shown in FIG. In the fastening portion 2 of this example, as shown in FIG. 3A, a plurality of fastening pins 2a in which a head 2c having a diameter larger than the diameter of the shaft 2b is formed at the tip of the shaft 2b. It is. On the other hand, a plurality of fastening holes R called so-called dharma holes corresponding to the number and position of the fastening pins 2a are formed on the back surface of the flat plate-like vibration test object T such as a flat panel display device. Yes. The fastening hole R includes a round hole portion Ra that is larger than the diameter of the head portion 2c of the fastening pin 2a and a groove portion Rb that communicates with the round hole portion Ra and is slightly wider than the diameter of the shaft 2b of the fastening pin 2a. .

  As shown in FIG. 3B, the vibration unit 1 is fixed to the vibration test object T by inserting the head portion 2c of the fastening pin 2a from the round hole portion Ra of the fastening hole R, and thereafter, as shown in FIG. 3C. Alternatively, the vibration unit 1 can be shifted upward and the shaft 2b of the fastening pin 2a can be moved to the groove Rb.

  In this way, all the fastening pins 2a of the vibration unit 1 are inserted into the corresponding fastening holes R of the vibration test object T and fixed, so that the vibration unit 1 is placed at a predetermined position on the back surface of the vibration test object T. Can be fixed, and the vibration control unit 4 can control the vibration generating unit 3 to vibrate the test object T with the required vibration excitation force, vibration frequency, acceleration and phase. The vibration is reciprocating in one direction.

  In the vibration, it is preferable to set the vibration excitation force from 5 kg to 20 kg, the vibration frequency from 5 Hz to 60 Hz, and the acceleration from about 0.2G to 10G.

  In addition, although the example in which the fastening is configured by the structure of the fastening pin 2a and the fastening hole R has been shown, the fastening method may be, for example, a magnet depending on the material of the vibration test object T and the surface condition. , Suction cup, vacuum suction, toggle clamp, bolt fastening, nut fastening, fitting method and the like can be used. Note that the selection of the fastening method is the same in the following embodiments.

  Next, the configuration of the vibration test apparatus according to the second embodiment of the present invention will be described with reference to FIG.

  FIG. 4 is a structural perspective view of a vibration test apparatus according to the second embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the same code | symbol to the part same as the structure and structure of vibration unit 1A shown in FIG. 1 thru | or FIG. 3, and those description is abbreviate | omitted.

  In this figure, reference numeral 10B indicates the vibration test apparatus of the second embodiment. This vibration test apparatus 10B has a configuration in which vibration units 1A and 1B are fastened to the left and right of a flat plate-like vibration test object Tp using fastening portions 2A and 2B, respectively. When the vibration generating unit 3A, 3B of 1B is controlled by the vibration control unit 4 (not shown) in accordance with the vibration excitation force, vibration frequency, acceleration, and phase, the combined reciprocating vibration indicated by the arrow Y is applied to the vibration test object Tp. The vibration test object Tp can be vibrated by the synthetic reciprocating vibration Y.

  Next, the configuration of the vibration test apparatus according to the third embodiment of the present invention will be described with reference to FIG.

  FIG. 5 is a structural perspective view of a vibration test apparatus according to a third embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the same code | symbol to the part same as the structure and structure of vibration unit 1A shown in FIG. 1 thru | or FIG. 3, and those description is abbreviate | omitted.

  In this figure, reference numeral 10C indicates the vibration test apparatus of the third embodiment. This vibration test apparatus 1C has a configuration in which vibration units 1A and 1B are fastened to the left and right of a flat plate-like vibration test object Tp using fastening portions 2A and 2B, respectively, similarly to the vibration test apparatus 10B. In this case, the vibration generators 3A and 3B of both vibration units 1A and 1B are controlled to have the same vibration excitation force, vibration frequency, and acceleration from the vibration control unit 4 (not shown), but with the phases shifted by 180 degrees. is doing. When the vibration generating units 3A and 3B are vibrated in this way, a combined rotational vibration R having the rotation center in the vicinity of the attachment intermediate point C of the vibration units 1A and 1B can be generated in the vibration test object Tp.

  Next, the configuration of the vibration test apparatus according to the fourth embodiment of the present invention will be described with reference to FIG.

  FIG. 6 is a structural perspective view of a vibration test apparatus according to a fourth embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the same code | symbol to the part same as the structure and structure of vibration unit 1A shown in FIG. 1 thru | or FIG. 3, and those description is abbreviate | omitted.

  In this figure, reference numeral 10D indicates the vibration test apparatus of the fourth embodiment. Similar to the vibration test apparatus 10B, the vibration test apparatus 1D is configured such that the vibration direction of the vibration generation part 3A of the vibration unit 1A is set to the X direction and the vibration generation part of the vibration unit 1B to the corner part of the flat plate-like vibration test object Tp. The 3B vibration direction is fastened in the Y direction.

  In the case of the vibration test apparatus 10D, when the vibration excitation force, vibration frequency, acceleration, and phase of both vibration generating units 3A and 3B are made the same, and vibration is performed by the vibration control unit 4 (not shown), an arrow Sa Synthetic vibration can be generated in an oblique direction.

  Next, the configuration of the vibration test apparatus according to the fifth embodiment of the present invention will be described with reference to FIG.

  FIG. 7 is a structural perspective view of a vibration test apparatus according to a fifth embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the same code | symbol to the part same as the structure and structure of vibration unit 1A shown in FIG. 1 thru | or FIG. 3, and those description is abbreviate | omitted.

  In this figure, reference numeral 10E denotes the vibration test apparatus of the fifth embodiment. This vibration test apparatus 10E has a vibration unit 1A attached to the center of a required one face Fa of a rectangular parallelepiped vibration test piece Tc, the vibration direction of the vibration generating part 3A is set in the horizontal direction (Y direction), and this surface. A configuration in which one vibration unit 1B and one vibration unit 1C are fastened to the left and right of the face Fb adjacent to Fa so that the vibration directions of the vibration generating portions 3B and 3C are directed in the vertical direction (Z direction). It is.

  In the case of this vibration test apparatus 10E, if the vibration excitation force, vibration frequency, acceleration, and phase of the three vibration generators 3A, 3B, and 3C are the same, and vibration is applied by the vibration controller 4 (not shown), Synthetic vibration can be generated in the oblique direction indicated by the arrow Sb inside the rectangular parallelepiped vibration test specimen Tc.

  Next, the configuration of the vibration test apparatus according to the sixth embodiment of the present invention will be described with reference to FIG.

  FIG. 8 is a structural perspective view of a vibration test apparatus according to the sixth embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the same code | symbol to the part same as the structure and structure of vibration unit 1A shown in FIG. 1 thru | or FIG. 3, and those description is abbreviate | omitted.

  In this figure, reference numeral 10F indicates the vibration test apparatus of the sixth embodiment. This vibration test apparatus 10F fastens the vibration unit 1A to the center part of a required one face Fa of a rectangular parallelepiped vibration test object Tc, and sets the vibration direction of the vibration generating part 3A in the horizontal direction (Y direction). A structure in which one vibration unit 1B, 1C is fastened to the left and right of the face Fb adjacent to the face Fa so that the vibration directions of the vibration generating portions 3B, 3C are directed in the vertical direction (Z direction). is there.

  In this vibration test apparatus 10F, the vibration generators 3A, 3B, and 3C have the same vibration excitation force, vibration frequency, and acceleration, and only the phases of the vibration generators 3B and 3C are shifted by 180 degrees from each other. When vibration is applied at 4 (not shown), the torsional vibration indicated by the arrow R can be generated inside the rectangular parallelepiped vibration test specimen Tc.

  Next, the configuration of the vibration test apparatus according to the seventh embodiment of the present invention will be described with reference to FIG.

  FIG. 9 is a perspective view of the configuration of the vibration test apparatus according to the seventh embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the same code | symbol to the part same as the structure and structure of vibration unit 1A shown in FIG. 1 thru | or FIG. 3, and those description is abbreviate | omitted.

  In this figure, reference numeral 10G indicates the vibration test apparatus of the seventh embodiment. This vibration test apparatus 10G fastens the vibration units 1A and 1B to the left and right sides of a required one face Fa of a rectangular parallelepiped vibration test object Tc, and sets the vibration direction of the vibration generating portions 3A and 3B in the horizontal direction (X direction). ) Is fastened so as to be suitable.

  In this vibration test apparatus 10G, when the vibration excitation force, vibration frequency, and acceleration of the vibration generators 3A and 3B are the same, and only the phase is shifted by 180 degrees from each other, vibration is applied by the vibration controller 4 (not shown). A combined vibration of compression and tension indicated by arrows E and C can be generated in a rectangular parallelepiped vibration test piece Tc.

  By arbitrarily selecting the number of fastening of the vibration unit, the fastening part, the vibration excitation force, the vibration frequency, the acceleration, and the phase in each of the above-described embodiments, arbitrary vibration can be vibrated on the vibration test specimens Tp and Tc. It becomes possible.

  Next, the configuration of the vibration test apparatus according to the eighth embodiment of the present invention will be described with reference to FIG.

  FIG. 10 is a perspective view of a vibration test apparatus according to the eighth embodiment of the present invention.

  In this figure, reference numeral 10H indicates the vibration test apparatus of the eighth embodiment. This vibration test apparatus 10H takes a flat panel display device (FPD) such as a liquid crystal display device or a plasma display device as a vibration test object, and shows a vibration test process as an application example in the production line.

  As shown in FIG. 10, the vibration test apparatus 10H has a fixed block 22 for fixing a flat panel display apparatus M, which is a vibration test object, slightly inclined to the rear at a substantially central portion of the mounting plate 21 in a horizontal state. And two vibration units 1A and 1B that can be fastened to the left and right of the back surface of the flat panel display device M, respectively, and each of the vibration units 1A and 1B fixed to the back surface of the test table 20 The vibration control unit 4 for controlling the vibrations of the vibration generating units 3A and 3B, and a power outlet 23 for energizing the flat panel display device M fixed on the vibration control unit 4 and the test table 20 are configured. ing. The power outlet 23 is disposed at the rear portion of the mounting surface 21 of the test table 20, and the hand switch 24 is disposed at one corner in front of the test table 20.

  On the test stand 20 of the vibration test apparatus 10H configured as described above, the flat panel display device M is transported and installed from the upper right side in FIG. 10 to the screen inspection position from the assembly process of the previous process. The flat panel display device M is placed on a mounting plate 21 having a horizontal surface and fixed by a fixing block 22.

  Next, the flat panel display device M is connected to the power outlet 23 with the power cord 25 and supplied with power to be in an energized state, and the screen of the flat panel display device M is turned on.

Further, one vibration unit 1A, 1B is fastened to each of the left and right sides of the back side of the flat panel display device M, and the vibration units 1A and 1B are vibrated at both left and right ends of the flat panel display device M. Each vibration unit 1
The vibration generating units 3A and 3B of the vibration units 1A and 1B are connected to the vibration control unit 4 through a control line 26, controlled by the control line 26, and an operator turning on a hand switch 25 provided on the screen inspection side. By doing so, the vibration excitation force, vibration frequency, acceleration, and phase of the vibration generating units 3A and 3B of the vibration units 1A and 1B can be arbitrarily changed.

  The operator applies an arbitrary vibration to both the vibration units 1A and 1B to perform a general inspection item of the flat panel display device M, for example, a screen brightness inspection, etc. Can be inspected for defects in the circuit board and the condition of the flat panel, and if there is a problem with them, the screen of the flat panel display device M will also have a problem item from the phenomenon that occurs due to those problems. Can be inspected and discovered at the same time.

  After completion of the inspection of a certain flat panel display device M, it is carried out from the left side to the next shipping process in FIG.

  In the case of an electronic device other than the flat panel display device M, it is possible to display the defect of the component as a defect in the output by oscillating while outputting the target output. It is possible to improve.

  The vibration test apparatus of the present invention is not limited to electronic devices as described above, and can be applied to general machinery, buildings, ships, vehicles, and the like.

  Therefore, the present invention can be used not only in the electronic / electrical industry but also in the mechanical industry, the construction industry, the shipbuilding industry, the vehicle manufacturing industry, and the like.

It is a perspective view of the vibration unit used as the center of composition of a vibration test device of the present invention. It is a block diagram of the vibration test apparatus of 1st Example of this invention. FIGS. 2A and 2B are diagrams illustrating a state in which the vibration unit illustrated in FIG. 1 is fastened to a vibration test object, in which FIG. A is a perspective view illustrating a fastening portion of the vibration unit and a back surface of the vibration test object, and FIG. FIG. A is a perspective view showing the relationship between one fastening pin of a fastening portion of the vibration unit and one fastening hole formed in the back surface of the vibration test object, and FIG. C is a diagram of the vibration test object shown in FIG. It is the perspective view which showed the state which inserted and fixed the fastening pin of the vibration unit to the fastening hole. It is a structure perspective view of the vibration test apparatus of 2nd Example of this invention. It is a structure perspective view of the vibration test apparatus of 3rd Example of this invention. It is a structure perspective view of the vibration test apparatus of 4th Example of this invention. It is a structure perspective view of the vibration testing apparatus of 5th Example of this invention. It is a structure perspective view of the vibration test apparatus of 6th Example of this invention. It is a structure perspective view of the vibration test apparatus of 7th Example of this invention. It is a structure perspective view of the vibration testing apparatus of 8th Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,1A, 1B, 1C ... Vibration unit which is main part of vibration test apparatus of this invention, 2, 2A, 2B, 2C ... Fastening part, 2a ... Fastening pin, 2b ... Fastening pin 2a axis, 2c ... Fastening pin 2a head, 3, 3A, 3B, 3C ... vibration generating unit, 4 ... vibration control unit, 10A ... vibration test apparatus of the first embodiment of the present invention, 10B ... vibration test apparatus of the second embodiment of the present invention. DESCRIPTION OF SYMBOLS 10C ... Vibration test apparatus of 4th Example of this invention, 10D ... Vibration test apparatus of 5th Example of this invention, 10E ... Vibration test apparatus of 6th Example of this invention, 10F ... 7th of this invention Vibration test apparatus of embodiment, 10G ... Vibration test apparatus of eighth embodiment of present invention, 20 ... Test stand, 21 ... Mounting plate, 22 ... Fixed block, 23 ... Power outlet, 24 ... Hand switch, 25 ... Power supply Code, 26 ... control line, T ... vibration test object, Tp ... planar Vibration test article, Tc ... cuboid under vibration test article, M ... flat panel display device, R ... fastening hole

Claims (11)

A vibration unit in which a fastening portion that can be fastened to a part of the vibration test object and a vibration generating portion that generates vibration in one direction on a side different from the fastening portion side are formed integrally;
A vibration control unit for controlling the vibration of the vibration generating unit;
A vibration test apparatus comprising: a power supply for energizing the vibration control unit.   One or a plurality of the vibration units are used depending on the shape of the vibration test object. When a plurality of vibration units are used, the required combined vibration is generated by individually changing the mounting direction of the vibration test object. The vibration test apparatus according to claim 1, wherein the vibration test apparatus can be set to a required composite vibration waveform by individually setting a vibration intensity, a vibration frequency, and a phase thereof.   The vibration test object has a flat plate shape, the vibration units are fastened to the left and right of the flat plate vibration test object, and the vibration excitation force, vibration frequency, and acceleration of the vibration generating portion of each vibration unit are determined. The composite vibration of the vibration is generated in the flat plate-like vibration test object by causing the vibration control unit to vibrate and control the same phase in the vibration control unit. Vibration test equipment.   The vibration test object has a flat plate shape, the vibration units are fastened to the left and right of the flat plate vibration test object, and the vibration excitation force, vibration frequency, and acceleration of the vibration generating portion of each vibration unit are determined. It is the same, and a combined rotational vibration with the center point of the two flat plate-like vibration test specimens as a rotational center is generated by oscillating and controlling the vibration control unit with the phase shifted by 180 degrees. The vibration test apparatus according to claim 2.   The vibration object to be vibrated is a flat plate, the vibration unit has a vibration direction in the X-axis direction, and the other vibration unit has its vibration in a corner portion of the plate-like vibration test object. The direction of vibration is fastened in accordance with the direction of the Y-axis, and the vibration control unit vibrates and controls with the same vibration excitation force, vibration frequency, acceleration and phase of the vibration generation unit of each vibration unit. The vibration test apparatus according to claim 2, wherein a combined vibration in an oblique direction is generated on the flat plate-like vibration test object.   The vibration test object is a rectangular parallelepiped, and the three vibration units are fastened to the rectangular parallelepiped vibration test object, and the vibration excitation force, vibration frequency, acceleration, and phase are set to be the same for the vibration units. The vibration test apparatus according to claim 2, wherein a synthetic vibration in an oblique direction is generated inside the rectangular parallelepiped vibration test object by exciting and controlling.   The test object to be vibrated is a rectangular parallelepiped, and the first vibration unit is fastened to one surface of the test object having a rectangular parallelepiped shape, and the second and third vibration units are fastened to the other surface adjacent to the one surface. Then, the vibration exciting force, vibration frequency, and acceleration are made the same in these vibration units, and only the phases of the second and third vibration units are shifted by 180 degrees to control and vibrate the rectangular parallelepiped object. The vibration test apparatus according to claim 2, wherein a torsional vibration is generated inside the vibration test object.   The vibration test object has a rectangular parallelepiped shape, and the first and second vibration units are fastened to one surface of the rectangular parallelepiped vibration test object, and vibration excitation force, vibration frequency, and acceleration are applied to the vibration units. It is the same, and the combined vibration of compression and tension is generated in the rectangular parallelepiped oscillating test object by oscillating and controlling only the phases of the second and third vibration units by 180 degrees with respect to each other. The vibration test apparatus according to claim 2. A test bench provided with a fixing means for fixing a flat panel display device, which is a vibration test object, on a horizontal mounting surface;
At least one vibration unit in which a fastening portion that can be fastened to a part of the flat panel display device and a vibration generating portion that generates vibration in one direction on a side different from the fastening portion side are integrally formed;
Vibration control means fixed to the test table and controlling the vibration of the vibration generating unit;
A vibration test apparatus comprising: the vibration control unit; and a power source for energizing the flat panel display device fixed on the test table.   The fastening means is selected from a magnet, suction cup, vacuum suction, toggle clamp, bolt fastening, nut fastening, fitting type, etc. according to the material and surface state of the vibration test object. The vibration test apparatus according to claim 1. The vibration test apparatus according to claim 1, wherein the vibration unit is selected from any one of a piezoelectric element, an air drive, a hydraulic drive, and an electromagnetic vibration type.

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