CN204188671U - A kind of double flute pressing shielded box - Google Patents
A kind of double flute pressing shielded box Download PDFInfo
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- CN204188671U CN204188671U CN201420646591.5U CN201420646591U CN204188671U CN 204188671 U CN204188671 U CN 204188671U CN 201420646591 U CN201420646591 U CN 201420646591U CN 204188671 U CN204188671 U CN 204188671U
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- upper cover
- shielded box
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Abstract
The utility model discloses a kind of double flute pressing shielded box, the jacking gear comprising casing, upper cover and be located between described casing and upper cover; Described casing and upper cover are connected the two ends being arranged on described jacking gear respectively, described jacking gear drive described upper cover near or away from described casing realize between described casing and upper cover opening and closed; Described casing and upper cover fit down to cover and face has been disposed adjacent many along its length shields groove, described upper cover and casing fit on cover on face and be disposed adjacent the shield protrusion that described shielding recess overlaps with each along its length; The height of described shield protrusion is equal to or less than the degree of depth of described shielding groove, and making can close contact between described shielding groove and shield protrusion.The utility model forms four step surfaces by convex-concave structure and contacts, and is equivalent to define four road shieldings to electromagnetic wave, the shielding environment that formation one is good in shielded box on faying face.
Description
Technical field
The utility model relates to the shielded box that a kind of test for wireless electronic product provides shielding environment
Background technology
Electromagnetic interference (EMI) (EMI) develops with electronics, electrical technology and occur, every electronics, technical field of electricity all can have electromagnetic interference (EMI).The electromagnetic interference (EMI) that electronics in a large amount of use, electrical system or equipment etc. produce can affect health, also can have an impact to the safety and reliability etc. that electronics, electrical system or equipment are mutual and endanger simultaneously.Severe electromagnetic environment often makes electronics, electrical system or equipment cisco unity malfunction, even causes fault and accident, or affects data when electronic product is tested.
But along with wireless communications products is for the raising of the accuracy requirement of Signal transmissions, electromagnetism interference performance requirement for product is more and more higher, current mobile phone, PDA and associated host circuit board complete the stage in exploitation, all need the test carrying out relevant electromagnetic property, and there is extremely complicated and serious electromagnetic interference (EMI) in general open environment, the degree of accuracy of easily impact test.Therefore, above-mentioned most test all must implement test, to reaching preferably testing precision in the environment of low EMI (or even without Electromagnetic Interference).
The common device of low EMI (without electromagnetic interference (EMI)) test environment that provides is the shielded box of a tool signal shielding function, shielded box conventional at present, general employing is planar pressing mode, and be generally individual layer pressing mode, single layer structure be difficult to by cylinder or manual mode tight to pressing, according to the circulation way of radio magnetic wave, the penetrability of rectilinear propagation is very strong, if be single layer planar structure pressing, as long as have a bit, non-pressing is tight, electromagnetic wave will directly be penetrated in case, cannot form one and effectively shield environment.
Utility model content
The purpose of this utility model is that proposing one for above-mentioned technical matters utilizes double flute pressing structure substitutive patterns pressing mode, can provide the shielded box of an effective electromagnetic screen environment.
The utility model solves the problems of the technologies described above adopted technical scheme: a kind of double flute pressing shielded box, the jacking gear comprising casing, upper cover and be located between described casing and upper cover;
Described casing and upper cover are connected the two ends being arranged on described jacking gear respectively, described jacking gear drive described upper cover near or away from described casing realize between described casing and upper cover opening and closed;
Described casing and upper cover fit down to cover on face and have been disposed adjacent at least one shielding groove along its length, described upper cover and casing fit on cover on face and be disposed adjacent the shield protrusion that described shielding recess overlaps with each along its length;
The height of described shield protrusion is equal to or less than the degree of depth of described shielding groove, and making can close contact between described shielding groove and shield protrusion.
In the utility model, flexible conducting material layer has been filled with in described shielding groove, described shield protrusion parcel is provided with flexible conducting material layer, compress described flexible conducting material layer by described shielding groove and shield protrusion and ensure that covering between face between described casing and upper cover fits tightly, effectively improve the conduction adaptation between described casing and upper cover.
In the utility model, the width of described shielding groove is 5mm and wall thickness between adjacent two shielding grooves are 3mm, and the thickness of described shield protrusion is 3mm and gap between adjacent two shield protrusions is 5mm.
In the utility model, the quantity of described shielding groove is two, and the quantity of described shield protrusion is two.
In the utility model, described jacking gear comprises double-acting cylinder, and the cylinder body of described double-acting cylinder is fastened on described casing, and the piston rod end of described upper cover and described double-acting cylinder is connected to a fixed.
In the utility model, described double-acting cylinder both sides are respectively arranged with a guides, and described guides comprises the guide holder that is fastened on described casing and to be movably arranged in described guide holder and the guide pole be fixedly connected with described upper cover.
In the utility model, described shielded box also comprises the control circuit being arranged on described bottom half and the switch control knob be electrically connected with described control circuit; When described shielded box is in unpacking state, press described switch control knob, described upper cover presses down and covers with described casing, tests; After completing test, press described switch control knob, described upper cover rises and is separated with described casing.
In the utility model, described shielded box is also provided with fixture, described fixture comprise support plate platform for loading tested electronic product, for drive described support plate platform in the vertical direction action first drive cylinder, for drive described support plate platform in the horizontal direction action second drive cylinder, realize charging and the discharging of tested electronic product.
In the utility model, the internal face of described casing and upper cover is equipped with the absorbing material layer for strengthening shield effectiveness.
In the utility model, described shielded box is also provided with the pilot lamp being used to indicate test result, and described pilot lamp is connected with proving installation.
In the utility model, described casing is provided with the data communication interface such as RF radio frequency interface, USB interface, DB9, DB25 for connecting outer testing system.
Shielded box described in the utility model adopts double flute convex-concave structure to realize fitting tightly between casing and upper cover, from planar structure, the faying face design of double flute convex-concave structure forms four step surfaces by male and female face and contacts on faying face, is equivalent to define four road shieldings to electromagnetic wave on faying face; Again because the penetrability of rectilinear propagation is very strong, if run into partition wall on route of transmission, electromagnetic wave cannot pass, the utility model double flute convex-concave structure is equivalent to the partition wall adding two convex-concave structure on faying face, be equivalent to the right angle of four 90 degree, effectively hinder electromagnetic wave propagation radiation, thus realize electromagnetic effective shielding, in shielded box, form a shielding environment.
Accompanying drawing explanation
Fig. 1 be shielded box in the utility model one embodiment face structural representation;
Fig. 2 is the side-looking structural representation of the shielded box in the utility model one embodiment;
Fig. 3 is the backsight structural representation of the shielded box in the utility model one embodiment;
Fig. 4 is the shielded box closure state structural representation in the utility model one embodiment;
Fig. 5 is I place's structure for amplifying schematic diagram in Fig. 1;
Fig. 6 is II place's structure for amplifying schematic diagram in Fig. 1;
Fig. 7 is III place's structure for amplifying schematic diagram in Fig. 4.
Embodiment
In order to be illustrated more clearly in the technical solution of the utility model, below in conjunction with drawings and Examples, the technical solution of the utility model is further elaborated, apparently, the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other embodiment can also be obtained according to these embodiments.
A kind of double flute pressing shielded box, with reference to Fig. 1, the jacking gear 3 comprising casing 1, upper cover 2 and be located between casing 1 and upper cover 2;
Casing 1 is connected with upper cover 2 two ends being arranged on jacking gear 3 respectively, jacking gear 3 drive upper cover 2 near or away from casing 1 realize between casing 1 and upper cover 2 opening and closed; Casing 1 and upper cover 2 fit down to cover and face has been disposed adjacent many along its length shields groove 11,2-in-1 of the upper cover that upper cover 2 and casing 1 fit are disposed adjacent along its length the shield protrusion 21 shielding groove 11 with each and match; The height of shield protrusion 21 is equal to or less than the degree of depth of shielding groove 11, and making can close contact between shielding groove 11 and shield protrusion 21.
The internal face of casing 1 and upper cover 2 is equipped with the absorbing material layer (not shown) for strengthening shield effectiveness.Shielded box is also provided with the pilot lamp (not shown) being used to indicate test result, and pilot lamp is connected with proving installation, can be shown the result of the test that current shielded box carries out by pilot lamp easily.
With reference to Fig. 2, because shielded box is just for the test carried out in shielded box provides an electromagnetic screen environment, therefore need when test from external world's access test macro.For this reason, casing 1 is provided with the data communication interface such as RF radio frequency interface 13, usb 15, DB914, DB2516 for connecting outer testing system.The kind of data communication interface and quantity can adjust according to concrete test event, do not enumerate here or limit.
Preferably, with reference to Fig. 5, Fig. 6 and Fig. 7, the wall thickness dimension due to shielded box is limited and consider actual shield effectiveness, and the quantity of shielding groove 11 is two, and the quantity of shield protrusion 21 is two.Concrete, the width of shielding groove 11 is 5mm and adjacent two wall thickness shielded between grooves 11 are 3mm, the thickness of shield protrusion 21 is 3mm and gap between adjacent two shield protrusions 21 is 5mm, ensure 2-in-1 of upper cover with under cover face and fully can contact form an effective shielding space in shielded box.
In one embodiment, with reference to Fig. 7, shielded box generally adopts metal material manufacture, casing covers for 1 time between face with 2-in-1 of the upper cover of upper cover 2 as steel to steel contacts, due to machining precision, the factors such as damage of colliding with in use procedure be difficult to ensure 2-in-1 of upper cover and under cover fitting tightly between face, very large impact is caused on the shield effectiveness of shielded box.For this reason, flexible conducting material layer (not shown) has been filled with in shielding groove 11, shield protrusion 21 parcel is provided with flexible conducting material layer, flexible conducting material is used to fill the clearance space shielded between groove 11 and shield protrusion 21, compress flexible conducting material layer by shielding groove 11 and shield protrusion 21 and ensure that covering between face between casing 1 and upper cover 2 fits tightly, effectively improve the conduction adaptation between casing 1 and upper cover 2.Preferably, this flexible conducting material selects conductive fabric.
In one embodiment, with reference to Fig. 3, when shielded box needs closed test, the upper cover 2 of jacking gear 3 driven shield case covers on casing 1, forms one effectively shield environment in shielded box inside; After shielded box completes test, the upper cover 2 of jacking gear 3 driven shield case, away from casing 1, is opened shielded box and is taken out tested electronic product.Preferably, jacking gear 3 comprises double-acting cylinder 31, and the cylinder body 31a of double-acting cylinder 31 mode such as to be bolted and to be fastened on casing 1, and upper cover 2 and the piston rod 31b end of double-acting cylinder 31 are connected to a fixed; Double-acting cylinder 31 is provided with two parallel piston rod 31b arranged, and is conducive to upper cover 2 in lifting process, keeps stable.
In one embodiment, with reference to Fig. 3, the double-acting cylinder 31 of jacking gear 3 has certain impact in course of action, and interval between two of double-acting cylinder 31 piston rod 31b is also relatively near, in the process covering with open of shielded box, upper cover 2 there will be chatter and likely produces situations such as colliding with, covering and the stability in the process opened to make shielded box, double-acting cylinder 31 both sides are symmetrically arranged with a guides 32 respectively, this guides 32 comprises and the mode such as to be bolted and to be fastened on the guide holder 32a on casing 1 and to be movably arranged in guide holder 32a and the guide pole 32b be fixedly connected with upper cover 2.Because two guidess 32 all do not have power source, be only located at middle double-acting cylinder 31 and drive, the synchronous of action between guides 32 with double-acting cylinder 31 can be ensured.
In one embodiment, with reference to Fig. 1, shielded box can be used alone and fixture 4 also can be coordinated to use.When shielded box coordinates fixture 4 to use, concrete, shielded box is provided with fixture 4, fixture 4 comprise support plate platform 41 for loading tested electronic product, for drive support plate platform 41 in the vertical direction action first drive cylinder (not shown), for drive support plate platform 41 in the horizontal direction action second drive cylinder 42, realize charging and the discharging of tested electronic product.Fixture 4 has four different actions when normally working, comprise vertical rising, vertical decline, level enters and level exits.The course of action of fixture 4 has controlled by being arranged on control circuit bottom shielded box, also can be controlled by external test macro, wherein, the init state of fixture 4 in shielded box is as follows, the upper cover 2 of shielded box is opened, and support plate platform 41 is in a vertical high position, the position that level is stretched out.
In one embodiment, with reference to Fig. 4, shielded box also comprises the control circuit be arranged on bottom casing 1 and the switch control knob 17 be electrically connected with control circuit, this switch control knob 17 is arranged to green, this switch control knob 17 arranges viridescent switch control indicator lamp 17a, when switch control knob 17 starts, green switch control indicator lamp 17a is simultaneously glittering, the duty that prompting shielded box is current; When shielded box is in unpacking state, Push switch control knob 17 or sent the control signal of closed shielded box by external test macro, if be provided with fixture 4 in shielded box, support plate platform 41 level of fixture 4 enters after above casing 1 and puts in place in vertical depression, then upper cover 2 presses down and covers with casing 1, carries out the automatic test of tested electronic product.Wherein, each action of shielded box is provided with corresponding sensor and follows the tracks of, and to determine that action all puts in place, if wherein the inductor of a step does not sense that action puts in place, then whole shielded box turns back to initial shape position.
After completing test, Push switch control knob 17 or sent by external test macro and open the control signal of shielded box, upper cover 2 rises to be separated with casing 1 and opens shielded box, the support plate platform 41 of fixture 4 vertically rises under the effect of the first cylinder, then under the effect of the second cylinder, level exits, equally, each action of shielded box is provided with corresponding sensor and follows the tracks of, to determine that action all puts in place, if wherein the sensor of a step does not sense that action puts in place, then whole shielded box stops action and keeps halted state.
In one embodiment, with reference to Fig. 4, shielded box is also provided with the single action switch 18 for fixture 4 Installation and Debugging in early stage, and this single action switch 18 is provided with redness, and this single action switch 18 side is equipped with a red single action pilot lamp 18a; Often press single action switch 18 once, shielded box performs an action, and single action pilot lamp 18a is simultaneously glittering, the duty that prompting shielded box is current.The action that single action switch 18 pressed in an initial condition continuously by shielded box is: enter above box body by support plate platform 41 level of a fixture 4; Vertically decline by the support plate platform 41 of a fixture 4 again; Press down by the upper cover 2 of primary shielding case again and cover shielded box; Open by primary shielding case again; Press once, the vertical upper body of upper cover 2 of shielded box, shielded box is opened again; Press once, support plate platform 41 vertically rises again; Press once, support plate platform 41 level exits, do action again; Certainly, the single action action of shielded box also can have been given an order by the test macro in the external world.
In one embodiment, with reference to Fig. 3, carry out covering in process at the upper cover 2 of shielded box, if the overall process covered all relies on the effect of gas to press down, the dynamics pressed down is comparatively large, easily causes damage to shielded box structure itself and operating personnel.For this reason, shielded box is provided with finger function, concrete, and shielded box is provided with for responding between upper cover 2 and casing 1 that spacing distance is to realize the position transducer 5 of finger function, and preferably, position transducer 5 is arranged on the cylinder body 31a of double-acting cylinder 31.When control circuit receives the signal of closed shielded box, control circuit can control source of the gas to double-acting cylinder 31 air feed 0.1 second, shielded box upper cover is made to obtain the initial actuating moved downward, then the weight of shielded box upper cover 2 self is utilized to press down, and non-immediate relies on gas to press down, make upper cover 2 after acquisition action initially pressed down, the gravity of self is relied on to press down again, and non-immediate relies on source of the gas power to press down, the slow dynamics of speed is little, even if operating personnel have maloperation also can not damage product or personnel in the process pressed down at upper cover 2.When upper cover 2 be depressed into distance casing 1 only have 1 millimeter time, the position transducer 5 be arranged on double-acting cylinder 31 is responded to upper cover 2 and is depressed into desired location, now control circuit control gas source feed is exerted pressure and the upper cover 2 of shielded box and casing 1 is compressed, thus realize the closely sealed of shielded box, a shielding environment is formed in shielded box inside.When have foreign matter shielded box upper cover 2 apart from the position that casing 1 is greater than 1 millimeter block upper cover 2 continue to press down time; then control circuit judges that shielded box now should not close; the upper cover 2 of shielded box can automatically reset to initial position; avoid the tested electronic product of closed injury or operating personnel, effective protection is formed to operating personnel.
The above is only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (10)
1. a double flute pressing shielded box, is characterized in that: the jacking gear (3) comprising casing (1), upper cover (2) and be located between described casing (1) and upper cover (2);
Described casing (1) is connected with upper cover (2) two ends being arranged on described jacking gear (3) respectively, described jacking gear (3) drive described upper cover (2) near or away from described casing (1) realize between described casing (1) and upper cover (2) opening and close;
Described casing (1) and upper cover (2) fit down to cover and face has been disposed adjacent many along its length shields groove (11), upper cover (2) the conjunction face that described upper cover (2) and casing (1) fit are disposed adjacent along its length the shield protrusion (21) that shielding groove (11) described with each matches;
The height of described shield protrusion (21) is equal to or less than the degree of depth of described shielding groove (11), and making can close contact between described shielding groove (11) and shield protrusion (21).
2. a kind of double flute pressing shielded box as claimed in claim 1, is characterized in that: be filled with flexible conducting material layer in described shielding groove (11), and described shield protrusion (21) parcel is provided with flexible conducting material layer.
3. a kind of double flute pressing shielded box as claimed in claim 1, is characterized in that: described double flute pressing shielded box is provided with for responding between upper cover (2) and casing (1) spacing distance to realize the position transducer (5) of finger function.
4. a kind of double flute pressing shielded box as claimed in claim 1, it is characterized in that: the quantity of described shielding groove (11) is two, the quantity of described shield protrusion (21) is two, the width of wherein said shielding groove (11) is 5mm and wall thickness between adjacent two shieldings groove (11) are 3mm, and the thickness of described shield protrusion (21) is 3mm and gap between adjacent two shield protrusions (21) is 5mm.
5. a kind of double flute pressing shielded box as claimed in claim 1, it is characterized in that: described jacking gear (3) comprises double-acting cylinder (31), the cylinder body (31a) of described double-acting cylinder (31) is fastened on described casing (1), and described upper cover (2) is connected to a fixed with piston rod (31b) end of described double-acting cylinder (31).
6. a kind of double flute pressing shielded box as claimed in claim 5, it is characterized in that: described double-acting cylinder (31) both sides are respectively arranged with a guides (32), described guides (32) comprises the guide holder (32a) that is fastened on described casing (1) and to be movably arranged in described guide holder (32a) and the guide pole (32b) be fixedly connected with described upper cover (2).
7. a kind of double flute pressing shielded box as claimed in claim 1, is characterized in that: described shielded box also comprises the control circuit being arranged on described casing (1) bottom and the switch control knob (17) be electrically connected with described control circuit.
8. a kind of double flute pressing shielded box as claimed in claim 1, it is characterized in that: described shielded box is also provided with fixture (4), described fixture (4) comprise support plate platform (41) for loading tested electronic product, for drive described support plate platform (41) in the vertical direction action first drive cylinder, for drive described support plate platform (41) in the horizontal direction action second drive cylinder (42).
9. a kind of double flute pressing shielded box as claimed in claim 1, is characterized in that: the internal face of described casing (1) and upper cover (2) is equipped with the absorbing material layer for strengthening shield effectiveness.
10. a kind of double flute pressing shielded box as claimed in claim 1, it is characterized in that: described shielded box is provided with the pilot lamp being used to indicate test result, described casing (1) is provided with the data communication interface for connecting outer testing system, this data communication interface comprises RF radio frequency interface (13), USB interface (15), DB9 (14), DB25 (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420646591.5U CN204188671U (en) | 2014-10-30 | 2014-10-30 | A kind of double flute pressing shielded box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420646591.5U CN204188671U (en) | 2014-10-30 | 2014-10-30 | A kind of double flute pressing shielded box |
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| Publication Number | Publication Date |
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| CN204188671U true CN204188671U (en) | 2015-03-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420646591.5U Active CN204188671U (en) | 2014-10-30 | 2014-10-30 | A kind of double flute pressing shielded box |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108230662A (en) * | 2017-12-28 | 2018-06-29 | 东本电气科技(苏州)有限公司 | Wireless telemetering gas-meter wiring board wireless performance detection device |
| CN108961931A (en) * | 2018-10-06 | 2018-12-07 | 华北理工大学 | A kind of wireless communication professional teaching experimental verification ancillary equipment |
| CN109752599A (en) * | 2017-11-08 | 2019-05-14 | 伟睿科技（深圳）有限公司 | The shielding castle of upper and lower open and close type |
| CN109813944A (en) * | 2017-11-20 | 2019-05-28 | 伟睿科技（深圳）有限公司 | Modular shielding castle |
| CN110602937A (en) * | 2019-10-29 | 2019-12-20 | 中国工程物理研究院电子工程研究所 | Electromagnetic shielding structure and electronic product |
-
2014
- 2014-10-30 CN CN201420646591.5U patent/CN204188671U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109752599A (en) * | 2017-11-08 | 2019-05-14 | 伟睿科技（深圳）有限公司 | The shielding castle of upper and lower open and close type |
| CN109813944A (en) * | 2017-11-20 | 2019-05-28 | 伟睿科技（深圳）有限公司 | Modular shielding castle |
| CN108230662A (en) * | 2017-12-28 | 2018-06-29 | 东本电气科技(苏州)有限公司 | Wireless telemetering gas-meter wiring board wireless performance detection device |
| CN108961931A (en) * | 2018-10-06 | 2018-12-07 | 华北理工大学 | A kind of wireless communication professional teaching experimental verification ancillary equipment |
| CN110602937A (en) * | 2019-10-29 | 2019-12-20 | 中国工程物理研究院电子工程研究所 | Electromagnetic shielding structure and electronic product |
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