Simple and convenient small case with locking device

Abstract

The invention provides a small case with a simple and convenient locking device, which comprises two case structural members, a plurality of rectangular plates are sequentially connected to the opposite sides of the two case structural members from top to bottom, a plurality of pressing plates are respectively arranged on one sides of the inner walls of the two case structural members, case unit plate mounting grooves are formed between the pressing plates and the rectangular plates, and the case unit plate mounting grooves are arranged in the case unit plate mounting grooves. The communication installation blocks are installed on the opposite sides of the two machine shell structural parts respectively, the unit board printed boards are arranged among the machine shell unit board installation grooves respectively, guide screws are arranged among the pressing plate, the rectangular plate and the unit board printed boards, and the surfaces of the guide screws are sleeved with springs. And the two cover plates are respectively arranged at the top and the bottom between the two casing structural members. According to the small case with the simple and convenient locking device, mechanical installation operation on the printed board unit is reduced, and mechanical damage possibly caused to the unit board in the mechanical installation process can be effectively reduced.

Description

Technical Field

[0001] The invention relates to the field of chassis, and in particular to a small chassis with a simple and convenient locking device. Background Art

[0002] Due to the maintainability requirements of airborne equipment, the installation of unit boards in the control box of airborne communication control equipment mostly adopts the quick locking method. As a result, there are many ways to quickly lock the unit boards of the control box, including wedge locking, dovetail groove spring locking, etc. However, various locking devices have certain usage restrictions when in use.

[0003] The use of quick locking devices in small chassis should not only consider the reliability of installation, heat dissipation, grounding, convenience of use, ease of use, etc., but also the requirements for the space occupied by the printed circuit board. In addition, when selecting the structural design, the anti-fool design also needs to be considered. Therefore, the previous locking devices have the following shortcomings when used:

[0004] 1. The locking device needs to be riveted on the printed circuit board unit, which may cause damage to the unit board;

[0005] 2. When installing the printed circuit board unit, the locking device must be locked. After the whole machine is installed, the whole machine must be disassembled to confirm whether the unit board is locked;

[0006] 3. For printed circuit board units with heat dissipation requirements, the locking devices are mostly multi-point clamping, and the heat dissipation effect is worse than the mounting surface clamping;

[0007] 4. The locking device takes up more space on the printed circuit board.

[0008] Therefore, it is necessary to provide a small chassis with a simple and convenient locking device to solve the above technical problems. Summary of the invention

[0009] The invention provides a small-sized machine case with a simple and convenient locking device, which solves the problem that the internal unit board is easily damaged when the locking device is riveted.

[0010] In order to solve the above technical problems, the present invention provides a small chassis with a simple and convenient locking device, comprising:

[0011] Two casing structures, with a plurality of rectangular plates being sequentially connected to opposite sides of the two casing structures from top to bottom;

[0012] A plurality of pressing plates, each of which is disposed on one side of the inner wall of the two housing structural members and located on the upper and lower sides of the plurality of rectangular plates, and a housing unit plate mounting groove is disposed between the pressing plate and the rectangular plate;

[0013] A plurality of connecting mounting blocks, wherein the plurality of connecting mounting blocks are respectively mounted on opposite sides of two of the casing structural members and are located between the plurality of pressing plates;

[0014] A plurality of unit board printed circuit boards, wherein the plurality of unit board printed circuit boards are respectively arranged between the plurality of housing unit board mounting grooves, guide screws are arranged between the pressing plate, the rectangular plate and the unit board printed circuit boards, and a spring is sleeved on the surface of the guide screws;

[0015] The cover plates are two in number and are respectively arranged at the top and the bottom between the two casing structural members.

[0016] Preferably, mounting blocks are connected to both sides of the top and bottom of one side of the two housing components.

[0017] Preferably, a fastening screw is connected between the mounting block and the cover plate.

[0018] Preferably, a rear cover plate is provided between the two casing structural members, screws are connected between the casing structural members, the rear cover plate and the cover plate, and a through hole matching the screw is provided on the surface of the cover plate.

[0019] Preferably, a movable component is arranged between the casing structure and the cover plate, and the movable component includes two fixing seats, surfaces of the two fixing seats are connected with fixing rods, and surfaces of the two fixing rods are sleeved with movable sleeves.

[0020] Preferably, a rectangular block is connected to one side of the movable sleeve, a movable rod is connected to the surface of the rectangular block, one end of the movable rod is connected to a connecting block, and one end of the connecting block is connected to the side of the cover plate.

[0021] Preferably, a fixing bolt is arranged inside the movable sleeve, a fixing hole matched with the fixing bolt is opened on the surface of the fixing rod, and a stopper is connected to the top end of the fixing rod.

[0022] Preferably, the fixed rod, the movable sleeve and the movable rod are used for opening and closing the cover.

[0023] Preferably, a flip assembly is arranged between the two casing structural members and the two cover plates, and the flip assembly includes a circular rod, and a plurality of rotating sleeves are sleeved on the surface of the circular rod, one side of the plurality of rotating sleeves is connected to a U-shaped connecting rod, and a transparent plate is connected between the plurality of U-shaped connecting rods.

[0024] Preferably, both left and right ends of the circular rod are connected with positioning blocks, and the positioning block is connected to one of the cover plates.

[0025] Compared with the related art, the small case with a simple and convenient locking device provided by the present invention has the following beneficial effects:

[0026] The present invention provides a small chassis with a simple and convenient locking device, which reduces the mechanical installation operations on the printed circuit board unit. The chassis locking device is installed on the side wall of the chassis and does not need to be assembled on the printed circuit board unit, thereby reducing the mechanical installation operations on the printed circuit board unit, effectively reducing the mechanical damage that may be caused to the unit board during the mechanical installation process, and improving the reliability of the product.

[0027] The installation steps of the printed circuit board unit are reduced. The chassis is designed with a self-resetting locking device. When the unit board is disassembled and installed, the locking device automatically resets, which is convenient for taking out the printed circuit board unit. There is no need to perform a separate locking operation after the printed circuit board unit is installed. After the chassis is assembled, the chassis is fastened and the locking device is locked by the casing installation screws, which improves the maintainability of the product.

[0028] The contact thermal resistance between the printed circuit board unit and the chassis is reduced. The entire plane of the slider of the chassis locking device is connected to the printed circuit board unit and fixed by mounting screws, which increases the contact area between the printed circuit board unit and the chassis and improves the heat dissipation capacity of the product.

[0029] The installation and fixing space occupied by the printed circuit board unit is reduced. The chassis locking device is installed on the casing, and only the locking position size needs to be reserved on the printed circuit board unit, which effectively reduces the space occupied by the printed circuit board unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A structural schematic diagram of a first embodiment of a small-sized case of a simple and convenient locking device provided by the present invention;

[0031] Figure 2 This is a schematic diagram of the installation of the self-resetting locking device;

[0032] Figure 3 This is a schematic diagram of the assembled structure;

[0033] Figure 4 It is a structural schematic diagram of locking step 1 of the self-resetting locking device;

[0034] Figure 5 It is a structural schematic diagram of the second locking step of the self-resetting locking device;

[0035] Figure 6 Front view of a small chassis with a simple and convenient locking device;

[0036] Figure 7 A top view of a small chassis with a simple and convenient locking device;

[0037] Figure 8A side view of a small chassis with a simple and convenient locking device;

[0038] Fig. 9 A structural schematic diagram of a second embodiment of a small-sized case of a simple and convenient locking device provided by the present invention;

[0039] Fig.10 for Fig. 9 An enlarged schematic diagram of part A is shown;

[0040] Fig.11 A schematic structural diagram of a third embodiment of a small chassis of a simple and convenient locking device provided by the present invention.

[0041] Numbers in the figure: 1, casing structure; 2, rectangular plate; 3, pressure plate; 4, casing unit board mounting groove; 5, unit board printed circuit board; 6, connecting mounting block; 7, guide screw; 8, spring; 9, cover plate; 10, fastening screw; 11, through hole; 12, rear cover plate; 13, screw; 14, mounting block;

[0042] 15. movable assembly; 151. fixed seat; 152. fixed rod; 153. movable sleeve; 154. rectangular block; 155. movable rod; 156. connecting block; 157. fixing bolt; 158. stopper;

[0043] 16. Flip assembly; 161. Round rod; 162. Rotating sleeve; 163. U-shaped connecting rod; 164. Transparent plate; 165. Positioning block. DETAILED DESCRIPTION

[0044] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes.

[0045] First embodiment

[0046] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 ,in, Figure 1 A structural schematic diagram of a first embodiment of a small-sized case of a simple and convenient locking device provided by the present invention; Figure 2 This is a schematic diagram of the installation of the self-resetting locking device; Figure 3 This is a schematic diagram of the assembled structure;

[0047] Figure 4 It is a structural schematic diagram of locking step 1 of the self-resetting locking device; Figure 5 It is a structural schematic diagram of the second locking step of the self-resetting locking device; Figure 6 Front view of a small chassis with a simple and convenient locking device; Figure 7 A top view of a small chassis with a simple and convenient locking device; Figure 8 A small case with a simple and convenient locking device includes:

[0048] Two casing structures 1, with a plurality of rectangular plates 2 connected in sequence from top to bottom on opposite sides of the two casing structures 2;

[0049] A plurality of pressing plates 3, wherein the plurality of pressing plates 3 are respectively arranged on one side of the inner wall of the two housing structural members 1 and located on the upper and lower sides of the plurality of rectangular plates 2, and a housing unit plate mounting groove 4 is arranged between the pressing plates 3 and the rectangular plates 2;

[0050] A plurality of connecting mounting blocks 6, wherein the plurality of connecting mounting blocks 6 are respectively installed on opposite sides of two of the casing structural members 1 and are located between the plurality of pressing plates 3;

[0051] A plurality of unit board printed circuit boards 5, wherein the plurality of unit board printed circuit boards 5 are respectively arranged between the plurality of housing unit board mounting grooves 4, a guide screw 7 is arranged between the pressing plate 3, the rectangular plate 2 and the unit board printed circuit board 5, and a spring 8 is sleeved on the surface of the guide screw 7;

[0052] The cover plates 9 are two in number, and the two cover plates 9 are respectively arranged at the top and the bottom between the two casing structural members 1 .

[0053] Both sides of the top and bottom of one side of the two housing components 1 are connected with mounting blocks 14 .

[0054] A fastening screw 10 is connected between the mounting block 14 and the cover plate 9 .

[0055] A rear cover plate 12 is disposed between the two housing structures 1 , screws 13 are connected between the housing structure 1 , the rear cover plate 12 and the cover plate 9 , and a through hole 11 matching the screw 13 is opened on the surface of the cover plate 9 .

[0056] Combined with reference Figure 2 Learn about the installation process of the self-made self-resetting locking device:

[0057] The two pressing plates 3 are respectively placed at the positions of the housing unit plate mounting grooves 4 of the housing structure 1, and are fixed by two guide screws 7 passing through the springs 8 and the corresponding mounting holes of the structure.

[0058] Combined with reference Figure 1 Learn about the installation and use process of the chassis printed circuit board unit:

[0059] Insert each unit board printed circuit board 5 into the casing structure 1 along the casing unit board installation groove 4 respectively. After the connector and the adapter board are inserted into place, install the cover plate 9 of the casing. After locking the cover plate 9 with the fastening screws 10, tighten the pressure plate 3 with the screws to achieve the locking state of the printed circuit board unit board 5.

[0060] Please refer to Figure 4 and Figure 5 Learn the working principle of the self-resetting locking device:

[0061] Step 1: Insert the unit board printed circuit board 5 into the casing along the casing mounting groove in the direction of the arrow until the connector on the unit board printed circuit board 5 is plugged into place with the connector on the adapter board.

[0062] Step 2: Install the cover screws along the mounting holes and tighten the mounting screws clockwise. During the tightening process, the screws are driven by the threads on the pressure plate to move toward the printed circuit board unit, pressing the printed circuit board unit.

[0063] The present invention adopts a self-made locking device installed on the chassis, so that there is no need to assemble the locking device on the unit board installed on the chassis, and there is no need to perform a separate locking operation after the unit board is installed. After the whole product is assembled, the unit board is locked by the casing screws. The chassis of the present invention can realize a built-in unit board locking device, and the chassis locking device can realize self-resetting, which is convenient for disassembly and assembly of the unit board. After fixing, the contact area with the unit board is larger, which can better realize grounding and heat dissipation. The unit board is locked by the chassis assembly screws. For the installation and use of the internal unit board, the chassis is easy to use and operate, and the installation is stable and reliable.

[0064] Compared with the related art, the small case with a simple and convenient locking device provided by the present invention has the following beneficial effects:

[0065] The present invention provides a small chassis with a simple and convenient locking device, which reduces the mechanical installation operations on the printed circuit board unit. The chassis locking device is installed on the side wall of the chassis and does not need to be assembled on the printed circuit board unit, thereby reducing the mechanical installation operations on the printed circuit board unit, effectively reducing the mechanical damage that may be caused to the unit board during the mechanical installation process, and improving the reliability of the product.

[0066] The installation steps of the printed circuit board unit are reduced. The chassis is designed with a self-resetting locking device. When the unit board is disassembled and installed, the locking device automatically resets, which is convenient for taking out the printed circuit board unit. There is no need to perform a separate locking operation after the printed circuit board unit is installed. After the chassis is assembled, the chassis is fastened and the locking device is locked by the casing installation screws, which improves the maintainability of the product.

[0067] The contact thermal resistance between the printed circuit board unit and the chassis is reduced. The entire plane of the slider of the chassis locking device is connected to the printed circuit board unit and fixed by mounting screws, which increases the contact area between the printed circuit board unit and the chassis and improves the heat dissipation capacity of the product.

[0068] The installation and fixing space occupied by the printed circuit board unit is reduced. The chassis locking device is installed on the casing, and only the locking position size needs to be reserved on the printed circuit board unit, which effectively reduces the space occupied by the printed circuit board unit.

[0069] Second embodiment

[0070] Please refer to Fig. 9 and Fig.10 Based on the small case with a simple and convenient locking device provided in the first embodiment of the present application, the second embodiment of the present application proposes another small case with a simple and convenient locking device. The second embodiment is only a preferred method of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0071] Specifically, the difference of a small chassis with a simple and convenient locking device provided in the second embodiment of the present application is that, in a small chassis with a simple and convenient locking device, a movable component 15 is arranged between the casing structure 1 and the cover plate 9, and the movable component 15 includes two fixed seats 151, and the surfaces of the two fixed seats 151 are connected to fixed rods 152, and the surfaces of the two fixed rods 152 are both provided with movable sleeves 153.

[0072] A rectangular block 154 is connected to one side of the movable sleeve 153 , a movable rod 155 is connected to the surface of the rectangular block 154 , one end of the movable rod 155 is connected to a connecting block 156 , and one end of the connecting block 156 is connected to the side of the cover plate 9 .

[0073] The fixing seat 151 is connected to the side of the casing structure 1 .

[0074] A fixing bolt 157 is disposed inside the movable sleeve 153 , a fixing hole matching the fixing bolt 157 is opened on the surface of the fixing rod 152 , and a stopper 158 is connected to the top end of the fixing rod 152 .

[0075] The fixed rod 152 , the movable sleeve 153 and the movable rod 155 are used for opening and closing the cover plate 9 .

[0076] The working principle of a small case of a simple and convenient locking device provided by the present invention is as follows:

[0077] During use, when checking the internal components of a faulty device, first take out the fixing bolt 157 inside the movable sleeve 153. After the fixing bolt 157 is taken out, the cover 9 is pulled upward. When the cover 9 moves upward, the movable rod 155 is driven upward through the connecting block 156. When the movable rod 155 moves upward, it drives the movable sleeve 153 to move upward on the surface of the fixed rod 152 through the rectangular block 154, and the cover 9 can be opened.

[0078] Compared with the related art, the small case with a simple and convenient locking device provided by the present invention has the following beneficial effects:

[0079] The present invention provides a small case with a simple and convenient locking device, wherein a movable component 15 is arranged between two casing structural members 1 and one of the cover plates 9, so that when a fault occurs inside the device body, the internal components can be conveniently opened from the top for inspection.

[0080] Third embodiment

[0081] Please refer to Fig.11 Based on the small case with a simple and convenient locking device provided in the first embodiment of the present application, the third embodiment of the present application proposes another small case with a simple and convenient locking device. The third embodiment is only a preferred embodiment of the first embodiment, and the implementation of the third embodiment will not affect the independent implementation of the first embodiment.

[0082] Specifically, the difference of a small chassis with a simple and convenient locking device provided in the third embodiment of the present application is that, in a small chassis with a simple and convenient locking device, a flip assembly 16 is arranged between the two casing structural members 1 and the two cover plates 9, and the flip assembly 16 includes a circular rod 161, and the surface of the circular rod 161 is provided with a plurality of rotating sleeves 162, and one side of the plurality of rotating sleeves 162 is connected to a U-shaped connecting rod 163, and a transparent plate 164 is connected between the plurality of U-shaped connecting rods 163.

[0083] The left and right ends of the circular rod 161 are both connected with positioning blocks 165 , and the positioning block 165 is connected to one of the cover plates 9 .

[0084] The rotating sleeve 162 is connected to the circular rod 161 via a bearing, and the transparent plate 164 is arranged between the two housing structural members 1 and the two cover plates 9 .

[0085] The working principle of a small case of a simple and convenient locking device provided by the present invention is as follows:

[0086] When in use, when the transparent plate 164 is opened, the U-shaped connecting rod 163 is driven to rotate by pulling the transparent plate 164 upwards. When the U-shaped connecting rod 163 is turned over, it drives the rotating sleeve 162 to rotate on the surface of the circular rod 161, and the transparent plate 164 can be opened.

[0087] Compared with the related art, the small case with a simple and convenient locking device provided by the present invention has the following beneficial effects:

[0088] The present invention provides a small chassis with a simple and convenient locking device, wherein a flip assembly 16 is arranged between two chassis structural members 1 and two cover plates 9 to facilitate opening and closing operations when installing and removing multiple unit board printed circuit boards 5 inside the device.

[0089] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A small case with a simple and convenient locking device, characterized in that: include: Two casing structures, with a plurality of rectangular plates being sequentially connected to opposite sides of the two casing structures from top to bottom; A plurality of pressing plates, each of which is disposed on one side of the inner wall of the two housing structural members and located on the upper and lower sides of the plurality of rectangular plates, and a housing unit plate mounting groove is disposed between the pressing plate and the rectangular plate; A plurality of connecting mounting blocks, wherein the plurality of connecting mounting blocks are respectively mounted on opposite sides of two of the casing structural members and are located between the plurality of pressing plates; A plurality of unit board printed circuit boards, wherein the plurality of unit board printed circuit boards are respectively arranged between the plurality of housing unit board mounting grooves, guide screws are arranged between the pressing plate, the rectangular plate and the unit board printed circuit boards, and a spring is sleeved on the surface of the guide screws; The cover plates are two in number and are respectively arranged at the top and the bottom between the two casing structural members.

2. The small case of the simple and convenient locking device according to claim 1, characterized in that: Both sides of the top and bottom of one side of the two housing components are connected with mounting blocks.

3. The small case of the simple and convenient locking device according to claim 2, characterized in that: A fastening screw is connected between the mounting block and the cover plate.

4. The small case of the simple and convenient locking device according to claim 1, characterized in that: A rear cover plate is arranged between the two casing structural members, screws are connected between the casing structural members, the rear cover plate and the cover plate, and a through hole matching the screw is opened on the surface of the cover plate.

5. The small case of the simple and convenient locking device according to claim 1, characterized in that: A movable assembly is arranged between the casing structure and the cover plate, and the movable assembly includes two fixing seats, surfaces of the two fixing seats are connected with fixing rods, and surfaces of the two fixing rods are sleeved with movable sleeves.

6. The small case of the simple and convenient locking device according to claim 5, characterized in that: A rectangular block is connected to one side of the movable sleeve, a movable rod is connected to the surface of the rectangular block, one end of the movable rod is connected to a connecting block, and one end of the connecting block is connected to the side of the cover plate.

7. The small case of the simple and convenient locking device according to claim 5, characterized in that: A fixing bolt is arranged inside the movable sleeve, a fixing hole matched with the fixing bolt is opened on the surface of the fixing rod, and a stopper is connected to the top end of the fixing rod.

8. The small case of the simple and convenient locking device according to claim 1, characterized in that: The fixed rod, the movable sleeve and the movable rod are used for opening and closing the cover plate.

9. The small case of the simple and convenient locking device according to claim 1, characterized in that: A flip assembly is arranged between the two casing structural members and the two cover plates, and the flip assembly includes a circular rod, and a plurality of rotating sleeves are sleeved on the surface of the circular rod, and a U-shaped connecting rod is connected to one side of the plurality of rotating sleeves, and a transparent plate is connected between the plurality of U-shaped connecting rods.

10. The small case of the simple and convenient locking device according to claim 9, characterized in that: The left and right ends of the circular rod are both connected with positioning blocks, and the positioning block is connected to one of the cover plates.

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