CN216491530U - Lightweight shielding and sealing instrument case - Google Patents
Lightweight shielding and sealing instrument case Download PDFInfo
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- CN216491530U CN216491530U CN202123135475.6U CN202123135475U CN216491530U CN 216491530 U CN216491530 U CN 216491530U CN 202123135475 U CN202123135475 U CN 202123135475U CN 216491530 U CN216491530 U CN 216491530U
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Abstract
The utility model relates to the technical field of electromagnetic shielding, in particular to a lightweight shielding sealing instrument case, which comprises a case body and a panel, wherein one side of the case body is provided with an opening, the panel is fixedly connected with the case body through a connecting piece, and the panel seals the opening of the case body; the box body and the panel are both made of light conductive materials, and at least one of the box body and the panel is made of carbon fiber materials. Adopt the utility model provides a technical scheme can solve prior art machine case weight heavier, realizes that electric lapped structure is comparatively complicated between box and the apron, and the electromagnetic shield effect of machine case has the problem of limitation. This scheme mainly used shielding seal installs the instrument at quick-witted incasement.
Description
Technical Field
The utility model relates to an electromagnetic shield technical field specifically is a lightweight shielding sealing instrument machine case.
Background
For modern electronic product design, along with the increasing working frequency of circuits, the electromagnetic shielding of an instrument case is an essential link for solving the problem of electromagnetic compatibility of electronic instruments, and the electromagnetic shielding of the instrument case can not meet the requirement of electromagnetic compatibility standard only by depending on the design of a circuit board. In the fields of military industry, aerospace and the like with higher requirements on the reliability of instruments, the chassis of an electronic instrument not only has good electromagnetic shielding performance, but also has sufficient mechanical strength, water resistance, dust resistance, weather resistance, impact vibration resistance and other performances, provides a good operating environment for the normal work of the instrument, and meets the use requirements under severe environments.
For an electronic instrument case with severe environment use requirements, in order to meet the requirements of environmental adaptability and electromagnetic compatibility, plastic materials are not suitable for being adopted, and the current common practice is to adopt aluminum, magnesium or other metal materials and form the electronic instrument case by milling, stamping, casting, welding and other modes. In order to ensure good conductive continuity and environmental tightness, most of the cases have a concave structural design such as a cylinder, a cover, a box and a shell, the processing difficulty of a cavity is high, the processing process is restricted, the thinnest wall thickness can only be more than 1.5mm-5mm, the case is relatively heavy, and the case has a large influence on portable, portable and backpack weight sensitive equipment. The light weight of the instrument case is urgently needed to be realized under the condition of meeting the performance requirements of the instrument.
In order to solve the problem, the utility model discloses a concatenation formula modularization carbon-fibre composite shielding machine case is disclosed for the utility model patent of grant bulletin number CN212519857U, include concatenation formula box and fix the apron in concatenation formula box both sides, concatenation formula box and apron all adopt compound shield plate to make, compound shield plate is including the first carbon fiber layer, the shielding metal layer, the metal-plated carbon fiber layer and the second carbon fiber layer that set gradually, be equipped with the recess that is used for setting up electrically conductive sealing strip on the first carbon fiber layer, the fluting degree of depth to the shielding metal layer of recess, and the electric overlap joint is realized with the contact of shielding metal layer to the wire sealing strip. The case body and the cover plate of the case are both made of composite shielding plates, and compared with a case made of steel or aluminum and other metals, the case is lighter in weight.
However, the spliced modular carbon fiber composite shielding case has a complex structure for realizing the electrical lap joint between the case body and the cover plate, and requires precisely processing a groove with a depth from the first carbon fiber layer to the shielding metal layer and installing a wire sealing strip in the groove; and the electrical lapping of the case is realized only by the wire sealing strip, and the electromagnetic shielding effect of the case has certain limitation.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a lightweight shielding sealing instrument machine case to solve prior art machine case weight heavier, realize that the structure of electric overlap joint between box and the apron is comparatively complicated, and the electromagnetic shield effect of machine case has the problem of limitation.
In order to achieve the above purpose, the utility model discloses technical scheme as follows:
a light shielding and sealing instrument case comprises a case body and a panel, wherein one side of the case body is provided with an opening, the panel is fixedly connected with the case body through a connecting piece, and the panel seals the opening of the case body; the box body and the panel are both made of light conductive materials, and at least one of the box body and the panel is made of carbon fiber materials.
Technical principle and beneficial effect compared with the prior art:
the technical scheme is adopted to seal and electromagnetically shield the instrument, the instrument is arranged in the box body, the panel is fixedly connected to the opening of the box body through the connecting piece, and the box body and the panel can form a closed accommodating space; because box and panel are light conducting material, therefore box and panel direct contact alright realize the electric overlap joint to form electromagnetic shield, and box and panel at least one are made by carbon fiber material, can effectively alleviate the weight of whole quick-witted case.
This lightweight shielding sealing instrument machine case compares in prior art:
1. the box and the panel are made of light conductive materials, the box and the panel have conductive performance, and the box and the panel are fixedly connected to the box in a panel contact mode during use, so that the box and the panel can be in electric lap joint, and an electromagnetic shielding effect is formed.
2. Because the electric overlap joint between box and the panel is realized through the direct contact of box and panel junction, the face of connecting of box and panel all can form the electric current promptly, consequently the box can form good electromagnetic shield effect with the panel cooperation to instrument to the installation in the box forms good protection effect.
3. At least one of the box body and the panel is made of carbon fiber materials, so that the box body and the panel are ensured to be electrically lapped to form an electromagnetic shielding effect, and the carbon fiber box body and/or the panel are lighter in weight, and are favorable for being applied to portable, backpack and other types of weight sensitive equipment.
Further, still include the frame, the frame setting is in the box.
Has the advantages that: by adopting the scheme, the frame is arranged in the box body and used for installing the printed board and the components, so that the printed board and the components are more convenient to install and have enough operation space compared with the case body which is directly installed in a narrow space of the box body; and the frame setting can play certain supporting role to the box in the box, avoids the box to receive the collision and damage easily in transportation, use.
Further, the frame is fixedly connected with the box body and/or the panel.
Has the advantages that: by adopting the scheme, the frame is fixedly connected with the box body and/or the panel, so that the structure of the whole case is more stable, the frame is further prevented from displacing relative to the box body in the carrying and using process, and the printed board and the components mounted on the frame are better protected.
Further, the frame is rigidly connected to the panel; the rear side of the frame is provided with a pin hole, and the rear side wall of the box body is provided with a positioning pin for inserting the pin hole.
Has the advantages that: this scheme of adoption carries out rigid connection with frame and panel after, will link into an organic whole frame with the panel again and insert in the box for in the locating pin on the lateral wall inserts the pinhole of frame rear side behind the box, realize the preliminary fixed of frame and box, the rethread connecting piece is in the same place panel and box fixed connection, and the equipment of accomplishing whole quick-witted case is fixed. The panel is firstly rigidly connected with the frame and then fixedly connected with the box body, so that the whole case structure is more stably connected.
Furthermore, the front end integrated into one piece of box has the fitting surface that is used for being connected with the panel, and the thickness of fitting surface is greater than the thickness of other positions of box.
Has the advantages that: this scheme of adoption, the fitting surface of being connected at the front end integrated into one piece and the panel of box, and the thickness of fitting surface is greater than the thickness at other positions of box, not only makes things convenient for being connected of box and panel, can guarantee moreover that being connected between box and the panel is firm reliable more.
Furthermore, the outer surface of the box body is provided with conductive cloth, and the conductive cloth extends to the matching surface of the box body.
Has the advantages that: by adopting the scheme, the conductive cloth is arranged on the outer surface of the box body, so that the shielding effect of the light shielding and sealing instrument case can be further enhanced; and the conductive cloth extends to the matching surface of the box body, namely, the panel made of the light conductive material is in direct contact with the conductive cloth when being connected with the box body, and the conductive cloth has soft property and can be completely attached to the panel, so that the contact resistance is prevented from being increased due to incomplete contact.
Furthermore, a sealing groove is formed in the matching surface of the panel relative to the box body, and a sealing strip is installed in the sealing groove.
Has the advantages that: this scheme of adoption sets up the seal groove on the face of being connected of panel and box to installation sealing strip in the seal groove can guarantee the leakproofness of panel and box junction, forms better protection to the printing board and the components and parts of installing in the accommodation space that box and panel combine to form.
Further, the sealing strip is a conductive rubber strip.
Has the advantages that: this scheme of adoption uses the conducting rubber strip as the sealing strip, can not only increase the sealed effect of whole quick-witted case, can also guarantee that the electromagnetic shield effect of quick-witted case is not cut down when increasing the leakproofness of whole quick-witted case.
Furthermore, the box body is made of carbon fiber materials, and the panel is made of light metal materials.
Has the beneficial effects that: by adopting the scheme, the box body is made of the carbon fiber material, so that the weight of the whole case can be reduced to the greatest extent, and the case is convenient to carry and transport; the panel is made of light metal materials, so that the weight of the panel is reduced as much as possible, the structural strength of the panel is ensured, and elements such as a display screen, a plug connector, a button switch and the like can be conveniently installed on the panel.
Furthermore, each surface of the box body is concave-convex.
Has the advantages that: by adopting the scheme, each surface of the box body is concave-convex, on one hand, because the thickness of the carbon fiber layer is thinner, the structural strength of the whole box body can be improved by making the box body into the concave-convex shape, and the box body is prevented from being easily damaged, so that printed boards, components and the like arranged in the box body are better protected; on the other hand, set up every face of box into concavo-convex, then its carbon fiber mould can adopt the mode of concatenation when making the box, and technology drawing die inclination direction becomes transversely by the direction of depth, and the restriction of technology to the die cavity is little, has avoided the space waste that has the deep section of thick bamboo class part casting drawing die inclination of sealed requirement and has brought.
Drawings
Fig. 1 is the utility model relates to an overall structure split sketch map of lightweight shielding sealing instrument machine case embodiment.
Fig. 2 is a schematic structural diagram of a junction between a box body and a frame of an embodiment of the light shielding and sealing instrument case of the present invention.
Fig. 3 is a schematic structural view of a junction between a panel and a box of an embodiment of the light shielding and sealing instrument case of the present invention.
Fig. 4 is a schematic structural diagram of a box fitting surface of an embodiment of the light shielding and sealing instrument case of the present invention.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the panel comprises a panel 1, a frame 2, a box body 3, screws 4, positioning pins 5, conductive rubber strips 6, nut columns 7, a carbon fiber layer 8 and conductive cloth 9.
Examples are shown in figures 1 to 4:
a light shielding sealed instrument case comprises three main parts, namely a panel 1, a frame 2 and a case body 3. The panel 1 is formed by milling magnesium alloy, and the panel 1 is used for mounting components such as a display screen, a plug connector, a button switch and the like; the frame 2 is formed by an aluminum alloy sheet metal, and the frame 2 is used for mounting various printed boards and components; the box 3 is carbon fiber material, and carbon fiber box 3 is by the mould shaping, and each face of box 3 is concavo-convex, can make thin wall carbon fiber layer 8 obtain consolidating, and it has ventilation window and battery opening to open on the box 3. The box 3 combines with panel 1 to form the accommodation space, and the size of frame 2 matches with the size of the accommodation space that box 3 and panel 1 combine to form.
The frame 2 and the panel 1 are rigidly connected through screws, pin holes are formed in the rear side of the frame 2, and positioning pins 5 used for being inserted into the pin holes are fixedly connected to the rear side wall of the box body 3. The local thickening of front end of box 3 forms the fitting surface of being connected with panel 1, and the electrically conductive cloth 9 of the surface solidification one deck of the carbon fiber layer 8 of box 3, and electrically conductive cloth 9 extends to the fitting surface of box 3, further strengthens shielding effect, reduces contact resistance. The panel 1 is provided with a sealing groove relative to the matching surface of the box body 3, and a conductive rubber strip 6 is arranged in the sealing groove and used for electromagnetic shielding and water-gas sealing of the joint surface of the panel 1 and the box body 3. Threaded holes are formed in the matching surface of the box body 3, nut columns 7 are connected to the threaded holes in a threaded mode, and the screws 4 are in threaded connection with the nut columns 7 to achieve fixing of the relative positions of the panel 1 and the box body 3.
Use the utility model discloses lightweight shielding sealing instrument machine case is sealed protection and electromagnetic shield to the instrument that is located quick-witted incasement portion, installs the instrument earlier, is about to various printing boards and components and parts and installs on frame 2, assembles whole machine case again. When the case is assembled, the panel 1 is rigidly connected to the front end of the frame 2 by screws, and then the frame 2 connected with the panel 1 is inserted into the case 3 until the positioning pins 5 on the case 3 are inserted into the pin holes on the frame 2, and at this time, the relative positions of the frame 2 and the case 3 are basically fixed. Before the frame 2 is completely inserted into the box body 3, a conductive rubber strip 6 is placed in a sealing groove of the panel 1, then a screw 4 is inserted into a nut column 7 on the box body 3, so that the relative position of the panel 1 and the box body 3 is fixed, and at the moment, the conductive rubber strip 6 is positioned at the joint of the panel 1 and the box body 7 and is used for electromagnetic shielding and water-air sealing of the joint surface.
The box body 3 of the light shielding sealed instrument case is made of carbon fiber materials through a die, the pressure casting molding of magnesium alloy is influenced by the casting fluidity of the magnesium alloy in the traditional lightest process method, the minimum wall thickness of the box body with the thickness of 450 multiplied by 250 multiplied by 300mm is not lower than 3mm, and the AZ91D magnesium alloy is 1.82g/cm3The minimum wall thickness of the same box body in the scheme is 0.7-1 mm, and the density of carbon fibers is 1.5-1.8 g/cm3Under the condition of the same external dimension, the weight can be reduced by more than 67 percent, and the weight of the box body 3 is greatly reduced.
Every face of this box 3 of lightweight shielding sealed instrument machine case all sets up to unsmooth form, then the carbon fiber mould of preparation box 3 adopts the concatenation mode, and technology drawing die inclination direction becomes transversely by the direction of depth, and the restriction of technology to the die cavity is little, has avoided the space waste that has the deep cylinder class part casting drawing die inclination of sealed requirement and has brought.
The mechanical strength, the water resistance, the dust resistance, the weather resistance, the corrosion resistance, the electromagnetic compatibility and other performances of the light shielding and sealing instrument case can reach the indexes of a metal case, and the case body 3 made of the carbon fiber material is lighter in weight, has better impact resistance, and is particularly suitable for being used in field portable instruments.
The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the embodiments is not described herein. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, and these modifications and improvements should also be regarded as the protection scope of the present invention, and these modifications and improvements do not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (10)
1. The utility model provides a sealed instrument machine case of lightweight shielding, includes box and panel, its characterized in that: one side of the box body is provided with an opening, the panel is fixedly connected with the box body through a connecting piece, and the panel seals the opening of the box body; the box body and the panel are both made of light conductive materials, and at least one of the box body and the panel is made of carbon fiber materials.
2. The light-weight, shield-sealed instrument chassis of claim 1, wherein: the box body is internally provided with a box body.
3. The light-weight, shield-sealed instrument chassis of claim 2, wherein: the frame is fixedly connected with the box body and/or the panel.
4. The light-weight, shield-sealed instrument chassis of claim 3, wherein: the frame is rigidly connected with the panel; the rear side of the frame is provided with a pin hole, and the rear side wall of the box body is provided with a positioning pin for inserting the pin hole.
5. The light-weight, shield-sealed instrument chassis of claim 1, wherein: the front end integrated into one piece of box has the fitting surface that is used for being connected with the panel, and the thickness of fitting surface is greater than the thickness of other positions of box.
6. The light-weight, shield-sealed instrument chassis of claim 5, wherein: the outer surface of the box body is provided with conductive cloth, and the conductive cloth extends to the matching surface of the box body.
7. The light-weight, shield-sealed instrument chassis of claim 5, wherein: and a sealing groove is formed in the matching surface of the panel relative to the box body, and a sealing strip is installed in the sealing groove.
8. The light-weight, shield-sealed instrument chassis of claim 7, wherein: the sealing strip is a conductive rubber strip.
9. The light weight, shield-sealed instrument enclosure of any one of claims 1-8, wherein: the box body is made of carbon fiber materials, and the panel is made of light metal materials.
10. The light-weight, shield-sealed instrument enclosure of claim 9, wherein: each surface of the box body is concave-convex.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123135475.6U CN216491530U (en) | 2021-12-13 | 2021-12-13 | Lightweight shielding and sealing instrument case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123135475.6U CN216491530U (en) | 2021-12-13 | 2021-12-13 | Lightweight shielding and sealing instrument case |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216491530U true CN216491530U (en) | 2022-05-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123135475.6U Active CN216491530U (en) | 2021-12-13 | 2021-12-13 | Lightweight shielding and sealing instrument case |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216491530U (en) |
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2021
- 2021-12-13 CN CN202123135475.6U patent/CN216491530U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 400021 No. 60, middle section of Huangshan Avenue, northern New Area, Chongqing Patentee after: Chongqing Military Industry Group Co.,Ltd. Address before: 400021 No. 60, middle section of Huangshan Avenue, northern New Area, Chongqing Patentee before: CHONGQING MILITARY INDUSTRY GROUP Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: No. 60, Middle Section of Mount Huangshan Avenue, Yubei District, Chongqing 400021 Patentee after: Chongqing Military Industry Group Co.,Ltd. Address before: 400021 No. 60, middle section of Huangshan Avenue, northern New Area, Chongqing Patentee before: Chongqing Military Industry Group Co.,Ltd. |
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| CP02 | Change in the address of a patent holder |