Shielding box

Abstract

The utility model discloses a shielding box, which relates to the shielding box field, and comprises an upper box body and a lower box body, the lower box body is arranged at the bottom end of the upper box body, a plurality of buckle assemblies are arranged at the joint of the upper box body and the lower box body, each buckle assembly comprises an upper fixing block, the bottom end of each upper fixing block is fixedly provided with a hook, and the hook is fixedly connected with the lower box body. The buckle assembly further comprises a lower fixing block arranged at the outer end of the lower box body through a bolt, and an inserting hole is formed in the top end of the lower fixing block. The hook at the bottom end of the upper fixing block is downwards inserted into the inserting hole and clamped into the hanging groove, so that connection of the upper fixing block and the lower fixing block is achieved, the upper fixing block and the lower fixing block are installed on the upper box body and the lower box body in a bolt connection mode respectively, and after the buckle assembly is used for a long time and is abraded and loosened, the buckle assembly can be fixed to the upper box body and the lower box body. And the upper fixing block and the lower fixing block can be detached and replaced, so that the connection strength of the upper box body and the lower box body is prevented from being affected by abrasion and looseness.

Description

Technical Field

[0001] The utility model relates to the field of shielding boxes, in particular to a shielding box. Background Art

[0002] A shielding box is a special container, also known as a radio frequency shielding box. It is generally made of conductive or magnetic materials. It can limit electromagnetic capabilities to a certain range, reduce electromagnetic wave interference inside and outside the equipment, and improve the performance and reliability of the equipment.

[0003] Shielding boxes are widely used in radio frequency calibration or coupling testing of various small and micro communication products and wireless products, providing an interference-free testing environment for the tested products. For example, a shielding box with publication number CN107567273B is disclosed in the prior art.

[0004] In order to facilitate disassembly, some shielding boxes in the prior art often adopt a snap-on connection structure, but the snap-on structure is inseparable from the connection and fixation of the shielding box. The snap-on structure will inevitably wear out after long-term use. The worn snap-on structure will become loose and affect the connection strength of the shielding box. Utility Model Content

[0005] In response to the shortcomings of the existing technology, the utility model provides a shielding box, in which the upper fixing block and the lower fixing block are respectively installed on the upper box body and the lower box body by bolt connection. When the snap assembly is worn and loosened after long-term use, the upper fixing block and the lower fixing block can be removed and replaced, thereby avoiding wear and loosening affecting the connection strength of the upper box body and the lower box body, which can effectively solve the problems in the background technology.

[0006] To achieve the above object, the technical solution adopted by the present invention is as follows: a shielding box, comprising an upper box body and a lower box body, wherein the lower box body is arranged at the bottom end of the upper box body, and a plurality of buckle components are provided at the connection between the upper box body and the lower box body;

[0007] The buckle assembly includes an upper fixing block which is fixed to the outer end of the upper box body by bolts, and a hook is fixed to the bottom end of the upper fixing block;

[0008] The buckle assembly also includes a lower fixing block mounted on the outer end of the lower box body by a bolt, a top of the lower fixing block is provided with an insertion hole, and an inner wall of the insertion hole is provided with a hanging groove;

[0009] The bottom end of the hook extends to the inside of the socket, and the protrusion on the hook is inserted into the hanging groove.

[0010] Furthermore, three connector snap-ons are provided at the connection between the upper box body and the lower box body, two of which are located on the front side of the upper box body, and the other connector snap-on is located on the rear side of the upper box body. The connector snap-ons at the three positions perfectly fit the size of the SMA connector, and can achieve the common grounding needs of the three SMA connectors while ensuring complete shielding.

[0011] Furthermore, the front and rear sides of the lower box body are both provided with wiring brackets, the wiring brackets are located at the bottom of the connector bayonet, and the wiring brackets include a bracket body fixedly arranged on the outer end of the lower box body;

[0012] A pressure plate is provided inside the bracket body, and a screw is provided on the side of the pressure plate away from the lower box body through a bearing, and one end of the screw extends to the outside of the bracket body and is connected to the bracket body through a thread;

[0013] One end of the screw rod is fixed with a hexagonal screw head, and the inner walls on both sides of the bracket body are fixed with limiting protrusions that penetrate the pressure plate, so the pressure plate can only move along a straight line.

[0014] Furthermore, a heat dissipation component is provided at the top of the upper box body, and the heat dissipation component includes a heat conductive plate embedded in the top of the upper box body. A plurality of strip-shaped protrusions are fixed on the top and bottom ends of the heat conductive plate. The strip-shaped protrusions at the bottom of the heat conductive plate are located inside the upper box body. The strip-shaped protrusions can increase the heat dissipation area, thereby improving the heat dissipation efficiency.

[0015] Furthermore, a counterweight assembly is provided at the bottom end of the lower box body, and the counterweight assembly includes a hollow base fixed at the bottom end of the lower box body;

[0016] A plurality of horizontally arranged counterweight blocks are provided inside the hollow base to serve as counterweights.

[0017] Furthermore, the counterweight assembly further comprises two clamping plates located inside the hollow base, and the counterweight block is clamped between the two clamping plates, thereby clamping and fixing the counterweight block;

[0018] Two springs fixedly connected to the inner wall of the hollow base are fixed on the side of the splint away from the counterweight block, and a sliding rod is fixed on the inner wall of the hollow base. The sliding rod passes through the rear ends of the two splints, so that the splints can slide along the sliding rod.

[0019] Compared with the prior art, the present invention provides a shielding box with the following beneficial effects:

[0020] The upper and lower fixing blocks are connected by inserting the hook at the bottom end of the upper fixing block downward into the socket and snapping it into the hanging groove. The upper and lower fixing blocks are respectively installed on the upper box body and the lower box body in a bolted connection manner. When the buckle assembly is worn and loosened after long-term use, the upper and lower fixing blocks can be removed and replaced, thereby avoiding wear and loosening affecting the connection strength of the upper and lower box bodies. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is the overall structural diagram of the utility model;

[0022] Figure 2 This is a diagram of the internal structure of the counterweight assembly of the present utility model;

[0023] Figure 3 This is a side sectional view of the buckle assembly of the present utility model;

[0024] Figure 4 This is a structural diagram of the wiring bracket of the utility model;

[0025] Figure 5 This is a bottom view of the heat dissipation component of the present invention.

[0026] In the figure: 1. Upper box body; 2. Lower box body; 3. Counterweight assembly; 301. Hollow base; 302. Counterweight block; 303. Clamp; 304. Spring; 305. Slide rod; 4. Connector bayonet; 5. Wiring bracket; 501. Bracket body; 502. Pressure plate; 503. Screw; 6. Buckle assembly; 601. Upper fixing block; 602. Lower fixing block; 603. Socket; 604. Hook; 605. Hanging slot; 7. Heat dissipation assembly; 701. Heat conducting plate; 702. Strip protrusion. DETAILED DESCRIPTION

[0027] To make the technical means, creative features, objectives, and effects of the present invention easier to understand, the present invention will be further described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the embodiments described are only a portion of the embodiments of the present invention, not all of them. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0028] like Figure 1-5 As shown, the utility model provides a shielding box, comprising an upper box body 1 and a lower box body 2, wherein the lower box body 2 is arranged at the bottom end of the upper box body 1, and a plurality of snap-fit ​​components 6 are provided at the connection between the upper box body 1 and the lower box body 2;

[0029] The buckle assembly 6 includes an upper fixing block 601 fixed to the outer end of the upper box body 1 by bolts, and a hook 604 is fixed to the bottom end of the upper fixing block 601;

[0030] The buckle assembly 6 further includes a lower fixing block 602 fixed to the outer end of the lower box body 2 by bolts. The top of the lower fixing block 602 is provided with an insertion hole 603, and the inner wall of the insertion hole 603 is provided with a hanging groove 605.

[0031] The bottom end of the hook 604 extends into the inside of the insertion hole 603 , and the protrusion on the hook 604 is inserted into the inside of the hanging groove 605 .

[0032] The entire snap assembly 6 is divided into two parts, the upper fixing block 601 of the upper part is installed on the upper box body 1, and the lower fixing block 602 of the lower part is installed on the lower box body 2. Both are installed with bolts. During use, the hook 604 at the bottom end of the upper fixing block 601 is inserted downward into the socket 603 and snapped into the hanging groove 605, thereby realizing the connection between the upper fixing block 601 and the lower fixing block 602, and then realizing the snap connection between the upper box body 1 and the lower box body 2. When the snap assembly 6 is worn and loosened after long-term use, the upper fixing block 601 and the lower fixing block 602 can be disassembled and replaced, thereby avoiding wear and loosening affecting the connection strength of the upper box body 1 and the lower box body 2.

[0033] In order to facilitate the connection with the outside world, such as Figure 1 、 4 As shown, three connector bayonet holes 4 are provided at the connection between the upper box body 1 and the lower box body 2, two of which are located on the front side of the upper box body 1, and the other connector bayonet hole 4 is located on the rear side of the upper box body 1. The connector bayonet holes 4 at the three positions perfectly fit the size of the SMA connector, and can achieve the common grounding needs of the three SMA connectors while ensuring complete shielding.

[0034] In addition, the position distribution of the three connector bayonet holes 4 is adapted to the design of the test board. There is a certain degree of redundancy inside the upper and lower box bodies 1 and 2, which can facilitate the arrangement of various sources for chip testing on the upper or lower part of the chip test board, such as the button battery-driven LED light source required for photosensitive chip testing or the radiation source required for radiation detection chip testing.

[0035] The lower box body 2 is provided with a wiring bracket 5 on both the front and rear sides. The wiring bracket 5 is located at the bottom of the connector bayonet 4. The wiring bracket 5 includes a bracket body 501 fixed to the outer end of the lower box body 2.

[0036] A pressure plate 502 is provided inside the bracket body 501. A screw 503 is provided on the side of the pressure plate 502 away from the lower box body 2 through a bearing. One end of the screw 503 extends to the outside of the bracket body 501 and is connected to the bracket body 501 through a thread.

[0037] One end of the screw rod 503 is fixed with a hexagonal screw head, and the inner walls on both sides of the bracket body 501 are fixed with limiting protrusions that penetrate the pressure plate 502, so the pressure plate 502 can only move along a straight line.

[0038] Before the SMA connector enters the interior of the upper box body 1 and the lower box body 2 through the connector bayonet 4, the wire corresponding to the SMA connector first passes through the inner side of the bracket body 501 and is located between the pressure plate 502 and the lower box body 2. Then, the screw 503 is rotated to move the screw 503 and push the pressure plate 502, pressing the wire tightly and fixing it to the outer end of the lower box body 2 to prevent the wire from swinging and causing the SMA connector to loosen.

[0039] In the closed state, it is necessary to improve the heat dissipation efficiency inside the upper box body 1 and the lower box body 2, such as Figure 1 、 5 As shown, a heat dissipation component 7 is provided at the top of the upper box body 1, and the heat dissipation component 7 includes a heat conductive sheet 701 embedded in the top of the upper box body 1, and a plurality of strip-shaped protrusions 702 are fixedly provided at the top and bottom ends of the heat conductive sheet 701. The strip-shaped protrusions 702 at the bottom of the heat conductive sheet 701 are located inside the upper box body 1, and the strip-shaped protrusions 702 can increase the heat dissipation area, thereby improving the heat dissipation efficiency.

[0040] A heat conducting sheet 701 is embedded in the top of the upper box body 1. The bottom of the heat conducting sheet 701 and the strip protrusion 702 at the bottom can absorb the heat inside the upper box body 1. After the heat is transferred, it is dissipated from the top of the heat conducting sheet 701 and the strip protrusion 702 at the top, thereby effectively dissipating heat without affecting the sealing of the upper box body 1 and the lower box body 2.

[0041] In order to improve the stability of the shielding box, Figure 1 、 2 As shown, a counterweight assembly 3 is provided at the bottom end of the lower box body 2, and the counterweight assembly 3 includes a hollow base 301 fixed at the bottom end of the lower box body 2;

[0042] A plurality of horizontally arranged counterweight blocks 302 are provided inside the hollow base 301 to serve as counterweights.

[0043] The counterweight assembly 3 further includes two clamping plates 303 located inside the hollow base 301 , and the counterweight block 302 is clamped between the two clamping plates 303 , thereby clamping and fixing the counterweight block 302 ;

[0044] Two springs 304 fixedly connected to the inner wall of the hollow base 301 are fixedly provided on the side of the splint 303 away from the counterweight block 302, and a sliding rod 305 is fixed on the inner wall of the hollow base 301. The sliding rod 305 passes through the rear ends of the two splints 303, so that the splint 303 can slide along the sliding rod 305.

[0045] Multiple counterweights 302 are placed inside the hollow base 301, and the elastic force of the spring 304 is used to push the splint 303, so that the splint 303 slides along the slide rod 305 and clamps the counterweights 302 inside the hollow base 301. In this way, the overall weight of the counterweight assembly 3 can be increased by the counterweights 302, thereby lowering the center of gravity of the shielding box and improving the stability of the shielding box. The number of counterweights 302 inside the hollow base 301 can be adjusted as needed.

[0046] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements shall fall within the scope of the present invention as claimed.

Claims

1. A shielding box, comprising an upper box body (1) and a lower box body (2), wherein the lower box body (2) is arranged at the bottom end of the upper box body (1), characterized in that: A plurality of buckle components (6) are provided at the connection between the upper box body (1) and the lower box body (2); The buckle assembly (6) comprises an upper fixing block (601) which is fixed to the outer end of the upper box body (1) by means of bolts, and a hook (604) is fixedly provided at the bottom end of the upper fixing block (601); The buckle assembly (6) further comprises a lower fixing block (602) which is fixed to the outer end of the lower box body (2) by means of bolts, a plug hole (603) is provided at the top of the lower fixing block (602), and a hanging groove (605) is provided on the inner wall of the plug hole (603); The bottom end of the hook (604) extends to the inside of the insertion hole (603), and the protrusion on the hook (604) is inserted into the inside of the hanging groove (605).

2. A shielding box according to claim 1, characterized in that: Three joint bayonet holes (4) are provided at the connection between the upper box body (1) and the lower box body (2), two of which are located at the front side of the upper box body (1), and the other joint bayonet hole (4) is located at the rear side of the upper box body (1).

3. A shielding box according to claim 2, characterized in that: The lower box body (2) is provided with wiring brackets (5) on both the front and rear sides, the wiring brackets (5) are located at the bottom of the connector bayonet (4), and the wiring brackets (5) include a bracket body (501) fixedly arranged at the outer end of the lower box body (2); A pressing plate (502) is provided inside the bracket body (501), and a screw rod (503) is provided on a side of the pressing plate (502) away from the lower box body (2) through a bearing, and one end of the screw rod (503) extends to the outside of the bracket body (501) and is connected to the bracket body (501) through a thread. A hexagonal screw head is fixedly provided at one end of the screw rod (503), and limiting protrusions penetrating the pressure plate (502) are fixedly provided on the inner walls on both sides of the bracket body (501).

4. A shielding box according to claim 1, characterized in that: A heat dissipation component (7) is provided at the top of the upper box body (1), and the heat dissipation component (7) comprises a heat conducting sheet (701) embedded in the top of the upper box body (1), and a plurality of strip-shaped protrusions (702) are fixedly provided at the top and bottom of the heat conducting sheet (701), and the strip-shaped protrusions (702) at the bottom of the heat conducting sheet (701) are located inside the upper box body (1).

5. A shielding box according to claim 1, characterized in that: A counterweight assembly (3) is provided at the bottom end of the lower box body (2), and the counterweight assembly (3) comprises a hollow base (301) fixedly arranged at the bottom end of the lower box body (2); A plurality of laterally arranged counterweight blocks (302) are arranged inside the hollow base (301).

6. A shielding box according to claim 5, characterized in that: The counterweight assembly (3) further comprises two clamping plates (303) located inside the hollow base (301), and the counterweight block (302) is clamped between the two clamping plates (303); Two springs (304) fixedly connected to the inner wall of the hollow base (301) are fixedly provided on one side of the clamping plate (303) away from the counterweight block (302), and a sliding rod (305) is fixedly provided on the inner wall of the hollow base (301), and the sliding rod (305) passes through the rear ends of the two clamping plates (303).

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