Abstract:
The present disclosure relates to a vibration reduction device, an electronic device and mobile equipment containing same. The vibration reduction device comprises: a first fixing component ( 10 ) which is a frame structure ( 11 ); a second fixing component ( 100 ) arranged in the center or near the center position of the first fixing component ( 10 ); and a vibration reduction connecting component ( 50 ) positioned between the first fixing component ( 10 ) and the second fixing component ( 100 ) and used for connecting both together. The vibration reduction connecting component ( 50 ) comprises a vibration reduction connecting frame ( 53 ) connected to the frame structure ( 11 ), and an inverted U-shaped structure ( 51 ) positioned in the vibration reduction connecting frame ( 53 ), connected to the lower part of the vibration reduction connecting frame ( 53 ) through supporting legs and connected with the second fixing component ( 100 ). The vibration reduction device of the present disclosure can provide excellent vibration reduction and impact-prevention protection for electronic products and precision electronic equipment. It is especially able to protect electronic products and precision electronic equipment installed on mobile equipment, such as a vehicle, against physical damage while under severe travelling conditions, as well as ensure their normal operation. The vibration reduction device according to the present disclosure not only has a simple structure and occupies little space, but also has simple installation and long service life, and can be suitable for varying load conditions.

Description:
TECHNICAL FIELD 
       [0001]    The present disclosure relates to a vibration reduction device. The present disclosure also relates to an electronic device and mobile equipment containing the vibration reduction device. 
       BACKGROUND ART 
       [0002]    With the development of science and technology, more and more electronic products and precision electronic equipment are merged into the daily life of people. Electronic products and/or precision electronic equipment such as Digital Video Recorders (DVR) and the like can especially be widely applied to mobile vehicles such as buses, long-distance passenger transportation vehicles, school buses, shop trucks, container trucks, tourist buses, logistics freight cars, law enforcement vehicles for police, trains, metros, ships, aircrafts and the like for performing audio and video synchronous recording, global positioning, wireless audiovisual real-time transmission and the like, thereby providing more convenience for the lives of people. However, under many conditions, the electronic products and/or the precision electronic equipment may be loaded on a mobile machine and equipment, and the machine and the equipment will inevitably bump due to road conditions and the like and cause vibration in the moving process. The electronic products and/or precision electronic equipment can often be very sensitive to vibration and impact, and may be damaged by excessive vibration. 
         [0003]    To solve the vibration reduction problem of the electronic products and/or precision electronic equipment in the mobile machine and/or equipment, many products have been developed in the industry, including such products as a spring vibration reduction structure, wire rope vibration reduction structure, hydraulic vibration reduction structure and the like. 
         [0004]    CN202034050U discloses a hard disk vibration reduction device. The hard disk vibration reduction device comprises an internal fixing sheet, an external fixing sheet and a Z-shaped vibration reduction block, wherein the Z-shaped vibration reduction block comprises rubber fixing blocks respectively sleeved on the internal fixing sheet and the external fixing sheet, and a metal connecting sheet connected between the rubber fixing blocks. By using the deformable performance of the rubber material of the fixing blocks, after fixed connection with the hard disk vibration reduction device, the action of protecting a hard disk against vibration damage is performed in the movement of the vehicles. The hard disk vibration reduction device is generally suitable for a single-hard-disk DVR vibration reduction solution, and a set resonant frequency is obtained under a set load. 
         [0005]    CN201285657Y discloses a hard disk vibration isolation device. The hard disk vibration isolation device comprises an upper fixing cover and a lower fixing plate fixedly connected together to form an empty box shape capable of accommodating a hard disk. A plurality of square foam vibration isolation pads and rubber sheaths are arranged on the inner peripheral wall of the empty box shape for covering the accommodated hard disk so as to perform the action of vibration isolation. 
         [0006]    CN202215654U discloses an oil-impregnated vibration reducer. The oil-impregnated vibration reducer comprises a vibration reducer body. A bottom cover is welded on the bottom end of the vibration reducer body. The vibration reducer body consists of a hard rubber polypropylene middle ring and soft rubber arranged on the top end of the hard rubber polypropylene middle ring. The soft rubber comprises an upper soft rubber ring and a lower soft rubber ring connected mutually. The external diameter of the upper soft rubber ring is smaller than the external diameter of the lower soft rubber ring, and the external diameter of the lower soft rubber ring is smaller than the external diameter of the hard rubber polypropylene middle ring. A cylindrical groove is arranged in the middle of the top end of the upper soft rubber ring, and damping oil is impregnated in the vibration reducer body. 
         [0007]    However, there is still an urgent need for a device not only having a simple structure and occupying little space, but also having simple installation and long service life, suitable for varying load conditions and capable of providing excellent vibration reduction and impact prevention protection for electronic products and precision electronic equipment. 
       SUMMARY OF THE INVENTION 
       [0008]    The present disclosure provides a vibration reduction device which can provide excellent vibration reduction and impact prevention protection for electronic products and precision electronic equipment. The vibration reduction device is especially able to protect electronic products and precision electronic equipment installed on mobile equipment, such as a vehicle, against physical damage while under severe travelling conditions, as well as ensure their normal operation. The vibration reduction device according to the present disclosure not only has simple structure and occupies little space, but also has simple installation and long service life, and can be suitable for varying load conditions. 
         [0009]    According to one aspect of the present disclosure, a vibration reduction device is provided, comprising: a first fixing component which is a frame structure; a second fixing component arranged in the center or near the center position of the first fixing component; and a vibration reduction connecting component positioned between the first fixing component and the second fixing component and used for connecting both together, wherein the vibration reduction connecting component comprises: a vibration reduction connecting frame connected to the frame structure, and an inverted U-shaped structure positioned in the vibration reduction connecting frame and connected to the lower part of the vibration reduction connecting frame through supporting legs; and moreover, the inverted U-shaped structure is connected with the second fixing component. 
         [0010]    According to certain embodiments, the first fixing component has installing holes respectively in the upper part and the lower part of the frame structure of the first fixing component; the second fixing component is a column body having a through hole for installation; and the shape of the vibration reduction connecting frame is almost consistent with the frame structure of the first fixing component. 
         [0011]    According to certain embodiments, a center hole used for receiving the second fixing component is formed at the crown of the inverted U-shaped structure. 
         [0012]    According to certain embodiments, lug bosses are respectively formed on the upper part and the lower part of the frame structure and the installing holes penetrate through the lug bosses. 
         [0013]    According to certain embodiments, at least one vibration reduction rib is formed on the end surface of one end or both ends of the side wall of the center hole. 
         [0014]    According to certain embodiments, at least one vibration reduction rib is formed on the end surface of one end or both ends of the vibration reduction connecting frame. 
         [0015]    According to certain embodiments, the frame structure of the first fixing component is roughly circular, and the vibration reduction connecting frame of the vibration reduction connecting component is also roughly circular; and meanwhile, through-holes are formed in the upper part and the lower part of the vibration reduction connecting frame in positions corresponding to the installing holes of the frame structure. 
         [0016]    According to certain embodiments, the frame structure of the first fixing component is roughly circular, and the vibration reduction connecting frame of the vibration reduction connecting component is a two-segment arc structure connected with the supporting legs of the inverted U-shaped structure. 
         [0017]    According to certain embodiments, the frame structure of the first fixing component is roughly circular, and the vibration reduction connecting frame of the vibration reduction connecting component is an incomplete circular structure having a notch on the upper part or the lower part. 
         [0018]    According to certain embodiments, the vibration reduction connecting component also comprises an external vibration reduction connecting piece, and the external vibration reduction connecting piece is connected to the vibration reduction connecting frame through a plurality of middle connecting columns which penetrate through the holes formed in the frame structure of the first fixing component. 
         [0019]    According to certain embodiments, the first fixing component and the second fixing component are made of material selected from metal, alloy, hard plastics and hard rubber, and the vibration reduction connecting component is made of material selected from soft elastic metal and soft elastic rubber. 
         [0020]    According to certain embodiments, the vibration reduction connecting component is formed in one step through a hot pressing molding and metal bonding process onto the first fixing component and the second fixing component. 
         [0021]    According to certain embodiments, the junction surfaces of the material of the vibration reduction connecting component with the materials of the first fixing component and the second fixing component are bonded with a chemical reagent. 
         [0022]    According to another aspect of the present disclosure, an electronic device is provided, wherein the electronic device comprises: an electronic device body; a housing, used for accommodating the electronic device body; and the vibration reduction device mentioned above, wherein the vibration reduction device is arranged between the electronic device body and the housing. 
         [0023]    According to still another aspect of the present disclosure, mobile equipment is provided, wherein the mobile equipment comprises the electronic device mentioned above. 
         [0024]    Because the inverted U-shaped vibration reduction structure in the above frame is adopted, the vibration reduction device according to the present disclosure can ensure that response frequencies in three directions of X, Y and Z of the electronic device are very low at rated load, thereby providing a tremendous protective region for the electronic device. 
         [0025]    By means of the inverted U-shaped vibration reduction structure, the vibration reduction device according to the present disclosure enables the deformation displacements of the electronic device in three directions of X, Y and Z to be very small, thereby greatly saving the internal space of a product. 
         [0026]    The vibration reduction device according to the present disclosure is simple in installation and only fasteners (such as screws, bolts and the like) are needed for fixation and connection. 
         [0027]    In addition, the vibration reduction device according to the present disclosure can be installed as required to realize the installation requirement of any direction of three directions of X, Y and Z of the housing of the electronic device. 
         [0028]    Furthermore, because the second fixing component is configured in the inverted U-shaped structure, the vibration reduction device according to the present disclosure can prevent the vibration reduction portion made of softer material (such as rubber) from directly rubbing against the fasteners (such as screws, bolts and the like), usually made of metal or alloy material, for fixing the electronic device. Therefore, the service life of the vibration reduction portion can be prolonged. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0029]    Other features and advantages of the present disclosure can be understood more clearly from the following more detailed description in combination with the drawings which show the principle of the present disclosure by way of embodiments. 
           [0030]      FIG. 1A  is a stereoscopic diagram of a vibration reduction device according to certain specific embodiments of the present disclosure. 
           [0031]      FIG. 1B  is a front view of the vibration reduction device shown in  FIG. 1A . 
           [0032]      FIG. 1C  is a back view of the vibration reduction device shown in  FIG. 1A . 
           [0033]      FIG. 1D  is a stereoscopic breakdown diagram of the vibration reduction device shown in  FIG. 1A . 
           [0034]      FIG. 1E  is a stereoscopic diagram of a vibration reduction connecting component of the vibration reduction device shown in  FIG. 1A . 
           [0035]      FIG. 1F  is a stereoscopic diagram, seen from another direction, of the vibration reduction connecting component of the vibration reduction device shown in  FIG. 1A . 
           [0036]      FIG. 2A  shows a stereoscopic breakdown diagram in which the vibration reduction device according to the present disclosure is applied to an electronic device. 
           [0037]      FIG. 2B  shows a top view of  FIG. 2A . 
           [0038]      FIG. 2C  shows a side view of  FIG. 2A . 
           [0039]      FIG. 3A  shows a top view in which the vibration reduction device according to the present disclosure is applied to two electronic devices. 
           [0040]      FIG. 3B  shows a side view in which the vibration reduction device according to the present disclosure is applied to two electronic devices. 
           [0041]      FIG. 4  is a response frequency-vibration transmissibility curve diagram obtained through a vibration reduction test method after the vibration reduction device according to the present disclosure is adopted. 
       
    
    
     DETAILED DESCRIPTION OF THE EMBODIMENTS 
       [0042]    The embodiments of the present disclosure are shown in the drawings for performing illustration. However, those skilled in the art can understand that the present disclosure is not limited to precise arrangement and devices shown therein. According to the description, those skilled in the art will know various variations and modifications within the spirit and the scope of the present disclosure. 
         [0043]    The vibration reduction device, the electronic device containing same and the mobile equipment according to the present disclosure will be described below with reference to the drawings. It should be noted that the drawings are not shown in a precise proportion. Orientation terms, such as “upper”, “lower”, “left”, “right”, “front”, “back” and the like, mentioned in the article are in accordance with the drawing layout, and are only for the convenience of description, rather than a limitation to the present disclosure. In addition, for the definitions of X direction, Y direction and Z direction in the drawing layout, see  FIG. 1A  and  FIG. 2A . In the drawings, similar components are expressed by similar drawing references. 
         [0044]    In general, the vibration reduction device of the present disclosure comprises: a first fixing component, a second fixing component arranged in the center or near the center position of the first fixing component, and a vibration reduction connecting component positioned between the first fixing component and the second fixing component, wherein the first fixing component is used for connection to a structure such as a housing, the second fixing component is used for connection to electronic equipment such as a hard disk, and the vibration reduction connecting component is used for vibration reduction. Specifically, the first fixing component is a frame structure, has installing holes respectively in the upper part and the lower part of the frame structure, and therefore is fixed to the structure such as the housing through screws which penetrate through the installing holes. According to certain specific embodiments, lug bosses are respectively formed on the upper part and the lower part of the frame structure and the installing holes penetrate through the lug bosses. The second fixing component is a column body, and is a cylinder according to certain specific embodiments. A through hole for installation is formed in the cylinder and is used for the screws to penetrate so as to fix the vibration reduction device to the electronic equipment. The vibration reduction connecting component is configured between the first fixing component and the second fixing component, and is used for connecting both together. 
         [0045]      FIG. 1A  shows a stereoscopic diagram of a vibration reduction device  1  according to certain specific embodiments of the present disclosure,  FIG. 1B  and  FIG. 1C  show a front view and a back view of the vibration reduction device shown in  FIG. 1A , and  FIG. 1D  shows a stereoscopic breakdown diagram of the vibration reduction device shown in  FIG. 1A . As shown in the figures, the vibration reduction device  1  comprises: a first fixing component  10 , a second fixing component  100  arranged in the center position of the first fixing component  10 , and a vibration reduction connecting component  50  positioned between the first fixing component  10  and the second fixing component  100 . 
         [0046]    As more clearly shown in  FIG. 1D  to  FIG. 1E , the first fixing component  10  is a frame structure  11 , has installing holes  13  respectively in the upper part and the lower part of the frame structure  11 , and therefore is fixed to the structure such as the housing through the screws which penetrate through the installing holes  13 . According to certain specific embodiments, lug bosses  12  are respectively formed on the upper part and the lower part of the frame structure  11  and the installing holes  13  penetrate through the lug bosses  12 . Therefore, the frame structure  11  can be more conveniently installed on the structure such as the housing. The second fixing component  100  arranged in the center position of the first fixing component  10  is a column body, and is a cylinder according to certain specific embodiments. A through-hole  101  for installation is formed in the middle and is used for the screws to pass so as to fix the vibration reduction device to the electronic equipment. Certainly, those skilled in the art can understand that the second fixing component  100  is not limited to the cylinder, and can also be a prism, a square column body and the like. The vibration reduction connecting component  50  comprises a vibration reduction connecting frame  53  and an inverted U-shaped structure  51  positioned in the vibration reduction connecting frame  53 . The vibration reduction connecting frame  53  is used for connection to the inner side of the frame structure  11  of the first fixing component  10 . Two supporting legs  60  of the inverted U-shaped structure  51  are connected to the lower part of the vibration reduction connecting frame  53 , and a center hole  58  is formed at the crown  52  of the inverted U-shaped structure  51 , and used for receiving the second fixing component  100 . According to certain specific embodiments, at least one vibration reduction rib  55  is formed on the end surface of one end or both ends of the side wall  61  of the center hole  58  to assist in alleviating vibration. According to certain specific embodiments, at least one vibration reduction rib  59  is formed on the end surface of one end or both ends of the vibration reduction connecting frame  53  to assist in alleviating vibration. 
         [0047]    According to certain specific embodiments shown in  FIG. 1A  to  FIG. 1F , the frame structure  11  of the first fixing component  10  is roughly circular. However, those skilled in the art can understand that the frame structure  11  is not limited to be roughly circular, and can be any other appropriate shapes, such as square frame, long square frame, trapezoid frame and irregular frame as long as the frame structure  11  can be used for fixation to the housing. In the cases of the square frame, the long square frame and the trapezoid frame, the installing holes for the screws to pass can be directly formed in the upper part and the lower part of the frame structure without the need of processing the lug bosses. 
         [0048]    According to certain specific embodiments shown in  FIG. 1A  to  FIG. 1F , the shape of the vibration reduction connecting frame  53  of the vibration reduction connecting component  50  is consistent with the frame structure  11  of the first fixing component  10 , and is also roughly circular in the embodiment so as to connect with the frame structure  11  of the first fixing component  10  together from the inside. Through-holes  54  are formed in the upper part and the lower part of the vibration reduction connecting frame  53  in positions corresponding to the installing holes  13  of the frame structure  11 , for the screws to penetrate. However, those skilled in the art can understand that the vibration reduction connecting frame  53  is also not limited to be roughly circular in shape, and can be a two-segment arc structure connected with two supporting legs  60  of the inverted U-shaped structure  51  (at this moment, the through-holes corresponding to the installing holes  13  are not required to be arranged), can be an incomplete circular structure (for example, a notch exists on the upper part or the lower part of the circular structure), and can also be any appropriate shape matched with the frame structure  11 , such as square frame, long square frame, trapezoid frame, irregular frame and the like, as long as the shape of the vibration reduction connecting frame  53  can be connected with the frame structure  11  of the first fixing component  10  together from the inside and fix the inverted U-shaped structure  51 . 
         [0049]    According to certain specific embodiments, the vibration reduction connecting component  50  can also have an external vibration reduction connecting piece  56 , and the external vibration reduction connecting piece  56  is connected to the vibration reduction connecting frame  53  through a plurality of middle connecting columns  57 . In the assembled vibration reduction device  1 , the middle connecting columns  57  penetrate through the through-holes  14  formed in the corresponding positions of the frame structure  11  of the first fixing component  10 ; thus, the inverted U-shaped structure  51  is firmly connected to the frame structure  11  of the first fixing component  10  through the vibration reduction connecting frame  53  and the external vibration reduction connecting piece  56 ; the resonant frequency range of the whole vibration reduction device  1  is ensured; and the deformation displacements in three directions of X, Y and Z are limited so that the internal space for installing the electronic device of the vibration reduction device  1  is greatly saved. 
         [0050]    The first fixing component  10  and the second fixing component  100  of the vibration reduction device  1  according to the present disclosure are usually made of different and/or identical material. The first fixing component  10  and the second fixing component  100  can be made of material like metal, alloy, hard plastics and hard rubber. The vibration reduction connecting component  50  can be made of material of soft elastic metal, soft elastic rubber and the like. In addition, the second fixing component  100  can be made of material of which the hardness is higher than that of the vibration reduction connecting component  50 , such as material like metal, alloy, hard plastics and hard rubber. According to certain specific embodiments, the first fixing component  10  and the second fixing component  100  are made of metal or alloy, and the vibration reduction connecting component  50  is made of rubber. Certainly, the present disclosure is not limited thereto, and those skilled in the art can consider other materials for making the components and identical and/or different combinations of the materials among the components according to the creative conception of the present disclosure. According to certain specific embodiments, the vibration reduction connecting component  50  is formed in one step through a hot pressing molding and metal bonding process onto the first fixing component  10  and the second fixing component  100 . According to certain specific embodiments, the junction surfaces of the rubber material of the vibration reduction connecting component  50  with the metal or alloy materials of the first fixing component  10  and the second fixing component  100  are subject to metal or alloy bonding processing with a chemical reagent; and meanwhile, with the combination of the arrangement of the middle connecting columns  57 , the vibration reduction connecting component  50  can be firmly connected to the first fixing component  10  for preventing the vibration reduction connecting component  50  from falling from the first fixing component  10 . 
         [0051]    The vibration reduction device according to the present disclosure can serve as a standard part suitable for various electronic products and/or precision electronic equipment. All kinds of electronic products and/or precision electronic equipment are generally accommodated in the housing, and the housing is also fixed to the mobile equipment such as vehicles and the like. If the electronic products and/or the precision electronic equipment can be directly connected to the housing, vibration, impact and the like will be directly transferred to the electronic products and/or precision electronic equipment due to vibration caused by emergency stops, bumps, and the like resulting from road conditions in the movement process of the mobile equipment, resulting in damage to the electronic products and/or the precision electronic equipment. The vibration reduction device of the present disclosure can be arranged between the electronic products and/or the precision electronic equipment and the housing, so as to reduce the vibration and the impact transferred to the electronic products and/or the precision electronic equipment by the mobile equipment and to perform the action of protecting the electronic products and/or the precision electronic equipment. 
         [0052]      FIG. 2A  shows a stereoscopic breakdown diagram in which the vibration reduction device  1  according to the present disclosure is installed in an electronic device  200 .  FIG. 2B  and  FIG. 2C  respectively show a top view and a side view of  FIG. 2A . In the exemplary embodiments shown in  FIG. 2A  to  FIG. 2C , the electronic device  200  can be, for example, a hard disk, and the electronic device body  201  of the electronic device  200  is a rectangular parallelepiped. The reason for using the rectangular parallelepiped as an example is that currently, most of electronic products themselves are regular rectangular parallelepipeds or regular hexahedrons to facilitate installation and emplacement. However, the present disclosure is not only suitable for such electronic products with regular shapes, but also suitable for electronic products with irregular shapes as long as the electronic products have installing positions. The electronic device body  201  is accommodated in the housing  204 . The housing  204  can be fixed to mobile equipment such as vehicles by way of fasteners (such as screws, bolts, rivets and the like), welding, or bonding. As shown in  FIG. 2A , the housing  204  comprises a housing body  203  and a cover  202 ; and holes are formed in the bottom wall of the housing body  203  and the cover  202  in positions corresponding to the installing holes  13  of the first fixing component  10  of the vibration reduction device  1 , and used for receiving the fasteners  301  such as screws so as to connect the housing  204  and the vibration reduction device  1 . According to the factors of the travelling direction of the mobile equipment, the direction of vibration or impact and the like, the vibration reduction device  1  can be selected to be arranged between the electronic device body  201  and the inner wall of the housing  204  on two opposite sides of the electronic device body  201 . Installing holes are respectively formed in two opposite sides, for installing the vibration reduction device  1 , of the electronic device body  201 . During installation, the fasteners  300  penetrate through the center hole  101  of the second fixing component  100  of the vibration reduction device  1  and extend into the corresponding installing holes of the electronic device body  201  so as to connect the vibration reduction device  1  to the electronic device body  201 . As shown in  FIG. 2A , four vibration reduction devices  1  are adopted in this application. 
         [0053]    For a hard disk on which the vibration reduction device  1  of the present disclosure is installed, when the mobile equipment suddenly stops moving or is bumped, the vibration can be effectively absorbed or reduced by the vibration reduction device  1 . For the convenience of narration, coordinate systems shown in  FIG. 1A  and  FIG. 2A  are set. The vibration reduction connecting frame  53  of the vibration reduction device  1  can limit the maximum displacement which may be generated in the vibration process so as to prevent the electronic device body  201  from directly impacting the housing  204 . 
         [0054]    As previously mentioned, the vibration reduction device according to the present disclosure can serve as a standard part suitable for various electronic products and/or precision electronic equipment. More importantly, the vibration reduction device according to the present disclosure can be suitable for different loads.  FIG. 3A  shows a top view in which the vibration reduction device according to the present disclosure is applied to two electronic devices.  FIG. 3B  shows a side view in which the vibration reduction device according to the present disclosure is applied to two electronic devices. As shown in  FIG. 3A , because applied to two electronic devices with heavier loads, six vibration reduction devices  1  are adopted in this application. 
         [0055]    The inventor determines by a test that: for loads of 100 g, 150 g and 200 g, four vibration reduction devices are recommended to be adopted; and for loads of 300 g and 400 g, six vibration reduction devices are recommended to be adopted. 
         [0056]    The vibration reduction effect by using the vibration reduction device of the present disclosure is excellent. Currently, the vibration reduction effect is tested in the art in accordance with “IEC 68-2-6 test method Fc and guidance: sinusoidal vibration”. The purpose of IEC 68-2-6 test method is to provide a standard sinusoidal vibration test procedure for determining the mechanical vulnerability and the specific function degradation circumstance when a test specimen encounters simple harmonic vibration. The test method can also be used for deciding the integrality of a test specimen structure and/or researching dynamic characteristics, and can be suitable for elements, equipment or other products which encounter the simple harmonic vibration in the process of transportation or utilization. The sinusoidal vibration of a test specimen hard disk on which the vibration reduction device  1  according to the present disclosure is installed is tested in accordance with the IEC 68-2-6 test method Fc and guidance. The test process of the vibration reduction device of the present disclosure comprises the following steps: 
         [0057]    performing visual inspection and electrical and mechanical inspection on the test specimen hard disk in accordance with the regulations of relevant specifications prior to the test; 
         [0058]    performing the test in accordance with specifications and carrying out the test in another axial direction only after completing all of test work in one axial direction (definitions of the axial directions, and test level and time are in accordance with relevant specifications); 
         [0059]    performing a functional test and all of measurement work in the test according to the regulations of relevant specifications; 
         [0060]    terminating the test; and 
         [0061]    performing visual inspection and electrical and mechanical inspection after the test specimen hard disk is recovered to the same state prior to the test. 
         [0062]    The structure of the vibration reduction device for the test is the same as the structures shown in  FIG. 1A  to  FIG. 1F . The test specimen hard disk is fixed to a test platform in accordance with the regulation of IEC 68-2-6, with a load of 100 g (therefore, four vibration reduction devices are adopted). A clamping point and a control point are configured according to the regulations of relevant specifications. In the sine sweeping test with the test condition of an input of 1 g&#39;s, the sine sweeping vibration is from 20 Hz to 500 Hz and the sweeping rate is 1 Oct./min (one octave per minute). The vibration response frequency-vibration transmissibility curve shown in  FIG. 4  and the maximum vibration transmissibility result in the vibration test shown in Table 1 are finally obtained. 
         [0000]    
       
         
               
             
               
               
             
               
               
               
               
             
           
               
                 TABLE 1 
               
             
             
               
                   
               
               
                 Vibration Test Result 
               
               
                 Sine Sweeping of 20 Hz to 500 Hz 
               
             
          
           
               
                   
                 Test Specimen Hard Disk 
               
             
          
           
               
                   
                   
                   
                 Maximum Vibration 
               
               
                 Directions 
                 Frequency (Hz) 
                 Acceleration (g&#39;s) 
                 Transmissibility 
               
               
                   
               
               
                 X direction 
                 11 
                 1.85 
                 1.85 
               
               
                 Y direction 
                 35 
                 1.95 
                 1.95 
               
               
                 Z direction 
                 47 
                 1.59 
                 1.59 
               
               
                   
               
             
          
         
       
     
         [0063]      FIG. 4  shows a result curve of the test specimen hard disk in sine sweeping of 20 Hz to 500 Hz at a sweeping rate of one octave per minute, wherein the transverse axis of the curve is response frequency and the longitudinal axis of the curve is vibration transmissibility. Seen from  FIG. 4 , because the inverted U-shaped structure  51  of the vibration reduction connecting component  50  of the vibration reduction device  1  presents different structures in X direction, Y direction and Z direction (see the coordinate system shown in  FIG. 1A ), the obtained vibration reduction results are slightly different: a curve peak in X direction appears earlier than curve peaks in Y direction and Z direction, i.e., appears in lower response frequency; and seen from the data in Table 1, the curve peak in X direction appears at 11 Hz, while the curve peaks in Y direction and Z direction appear later and respectively appear at 35 Hz and 47 Hz seen from the data in Table 1. The maximum vibration transmissibility in X direction is 1.85; the maximum vibration transmissibility in Y direction is 1.95, while the maximum vibration transmissibility in Z direction is 1.59. 
         [0064]    The maximum vibration transmissibility is an important index for measuring the vibration reduction effect. The maximum vibration transmissibility=the maximum acceleration value measured on the test specimen (hard disk)/the acceleration value (1 g&#39;s here) measured on the test platform at the frequency of this point. The smaller the transmissibility is, the safer the electronic device, i.e., the hard disk is. For the response frequency, on a point where the acceleration value is largest on the test curve, the lower the response frequency is, the larger the safety zone of the electronic device, i.e., the hard disk, is. Therefore, it can be seen from Table 1 and  FIG. 4  that the vibration reduction effect in X direction is the best; not only is the maximum transmissibility smaller, but also the response frequency corresponding to the point where the acceleration value is largest on the test curve is the lowest. In general, the vibration reduction effect of the vibration reduction device according to the present disclosure is excellent, and the response frequency is greatly reduced. 
         [0065]    It can be seen that the vibration reduction device according to the present disclosure has an excellent vibration reduction effect. Certainly, for the vibration reduction connecting component  50  of the vibration reduction device  1  in certain specific embodiments shown in  FIG. 1A  to  FIG. 1F , because the structures in X direction, Y direction and Z direction are not quite the same, the vibration reduction effects in X direction, Y direction and Z direction are slightly different. During use, those skilled in the art can perform arrangement according to vibration reduction needs in different directions. 
         [0066]    The electronic equipment and/or the precision instrument furnished with the vibration reduction device according to the present disclosure can be loaded onto the mobile equipment, and connected with the mobile equipment such as vehicles and the like by means of fasteners such as screws, bolts and the like through the installing holes formed in the housing of the electronic equipment and/or the precision instrument, thereby realizing an excellent vibration reduction effect and providing better use experience of the electronic equipment and/or the precision instrument for users of the mobile equipment. Certainly, those skilled in the art can consider other modes of connecting the electronic equipment and/or the precision instrument with the mobile equipment, such as welding, riveting, bonding, and the like. 
         [0067]    The specific embodiments of the present disclosure are described above with reference to the drawings, but these descriptions should not be understood as a limitation to the protection scope of the present disclosure. Different embodiments of the present disclosure can be combined or integrated according to any appropriate mode. Improvements or variations made on the above specific embodiments by those skilled in the art according to the instruction of the present disclosure will be covered within the protection scope of the present disclosure.