Case

Abstract

The invention provides a case, which belongs to the technical field of electronic equipment, and specifically comprises a shell, a daughter card and a heat dissipation cold plate, the shell is provided with a first electric connector, the daughter card is installed on one side of the heat dissipation cold plate, the heat dissipation cold plate is connected with the shell, the daughter card is provided with a second electric connector in butt joint with the first electric connector, and the daughter card is fixed on the shell through the heat dissipation cold plate; wherein the heat dissipation cold plate is provided with an ejector rod, the ejector rod is in threaded connection with the heat dissipation cold plate, one end of the ejector rod is located on the side, back to the shell, of the heat dissipation cold plate, and when the daughter card is disassembled, the ejector rod is rotated so that the other end of the ejector rod can abut against the side face, right opposite to the heat dissipation cold plate, of the shell, and the daughter card is disassembled. According to the processing scheme, the phenomenon that the connectors are damaged can be effectively prevented, and therefore the service life of the connectors is prolonged.

Description

Technical Field

[0001] The present application relates to the field of electronic equipment, and in particular to a chassis. Background Art

[0002] like Figure 1 As shown, two PCB daughter cards 1 are installed in a certain type of chassis. The daughter card structure is as follows Figure 2 As shown. The daily upgrade and maintenance of the daughter card 1 is relatively frequent, so it needs to be easy to disassemble and assemble. However, due to the direction limitation of the connector of this board, it can only be plugged into the PCB bottom plate 4 through the front direction of the connector to achieve electrical connection, and it is impossible to use other panels to be installed up and down inside the chassis. Therefore, in the early stage of design, the daughter card 1 adopted an external structure, that is, the daughter card 1 was first installed on the heat dissipation cold plate 2, and then the heat dissipation cold plate 2 was fixed to the chassis shell 3 with screws. At this time, the daughter card 1 adopted an external structure.

[0003] Since the daughter card 1 has a large number of connector pins and a large insertion and removal force, and the operating space around the heat dissipation cold plate 2 is limited, it is inconvenient to operate it by hand. Figure 3 The figure shows that the daughter card 1 is easy to quickly disassemble and assemble. The daughter card heat dissipation cold plate 2 is designed with anti-detachment screws 7 and a retaining ring 6. When disassembling and assembling the daughter card 1, the heat dissipation cold plate 2 can be disassembled and assembled by loosening or tightening the anti-detachment screws 7. Since the daughter card 1 and the heat dissipation cold plate 2 are fixed as a whole by screws, the daughter card connector is disengaged or plugged with the corresponding connector on the PCB base plate 4 under the action of the threaded screwing force of the anti-detachment screw 7, so that the daughter card 1 can be quickly disassembled and assembled.

[0004] like Figure 1 and 4 As shown, when the sub-card 1 is installed, the other four screws and the housing 3 except the anti-slip screw 7 will be tightened first. Since the threaded end of the anti-slip screw 7 is always in a protruding state, in the process of gradually tightening the other four screws, the protruding screw rod of the anti-slip screw 7 presses against the housing 3, resulting in the heat dissipation cold plate 2 and the sub-card 1 on one side of the anti-slip screw 7 not being able to gradually fit the chassis. After tightening the other four screws, the heat dissipation cold plate 2 and the sub-card 1 are in a tilted state, so that the heat dissipation cold plate 2 and the sub-card 1 are gradually "flattened" by the anti-slip screw 7 at an inclined angle. This will cause the connector of the sub-card 1 to be plugged in with the corresponding connector on the PCB base plate 4 at an inclined angle, which is easy to cause damage to the connector. In daily use, the connector socket "shrinks" and the pin is often damaged. To solve this problem, the threaded part of the anti-slip screw 7 is usually designed to be shorter, so that the tilt angle of the sub-card 1 during installation is reduced as much as possible, but the problem of tilted plugging of the connector cannot be completely avoided. Moreover, according to the plugging condition of the chassis card 1 and the PCB bottom plate 4 connector, the anti-drop screw 7 in this case is usually designed to leave only 4 to 5 threads, which cannot meet the requirement of at least 7 threads in the engineering machinery thread connection. Summary of the invention

[0005] In view of this, the present application provides a chassis that solves the problems in the prior art and can effectively prevent the connector from being damaged, thereby increasing the service life of the connector.

[0006] The present application provides a chassis that adopts the following technical solution:

[0007] A chassis comprises a shell, a daughter card and a heat dissipation cold plate;

[0008] A first electrical connector is provided on the outer surface of the shell, the daughter card is installed on one side of a heat dissipation cold plate, the heat dissipation cold plate is connected to the shell, a second electrical connector is provided on the daughter card to dock with the first electrical connector, and the daughter card is fixed to the shell through the heat dissipation cold plate;

[0009] Among them, the heat dissipation cold plate is provided with an ejector rod, the ejector rod and the heat dissipation cold plate are threadedly connected, one end of the ejector rod is located on the side of the heat dissipation cold plate facing away from the shell, and when removing the sub-card, the ejector rod is rotated so that the other end of the ejector rod is pressed against the side of the shell facing the heat dissipation cold plate, so that the first electrical connector and the second electrical connector are separated.

[0010] Optionally, the heat dissipation cold plate and the shell are connected by fixing screws or fixing threads.

[0011] Optionally, the ejector rod is an ejector bolt or an ejector screw, and the screw head of the ejector bolt or the ejector screw is located on a side of the heat dissipation cold plate facing away from the shell.

[0012] Optionally, a mounting groove is provided on the shell, and the sub-card is located in the mounting groove.

[0013] Optionally, the mounting groove is in a long direction, the first electrical connector is located in the mounting groove, two ejector rods are provided on the heat dissipation cold plate, the two ejector rods are respectively located on both sides of the second electrical connector, and the connecting line of the two ejector rods is parallel to the short side of the mounting groove.

[0014] Optionally, the heat dissipation cold plate includes a mounting plate and heat dissipation fins, the heat dissipation fins are fixed on the mounting plate, the outer edge of the mounting groove is provided with an annular groove, the mounting edge is located in the annular groove, and the edge of the mounting plate and the bottom of the annular groove are threadedly connected by a connecting piece.

[0015] In summary, this application includes the following beneficial technical effects:

[0016] When installing the daughter card in the present application, the daughter card is first fixed on the heat dissipation cold plate, and then the first electrical connection and the second electrical connection are aligned, and the heat dissipation cold plate is pressed to dock the first electrical connector and the second electrical connection, and then the heat dissipation cold plate and the housing are fixedly connected. During the installation process, the first electrical connection and the second electrical connection are aligned and quickly docked, and there is no tilted state between the heat dissipation cold plate and the daughter card, and the situation where the first electrical connection and the second electrical connection are docked at an inclined angle is avoided. The daughter card connector plug can be parallel to the corresponding connector socket on the bottom plate for plugging. It can effectively prevent the phenomenon of connector damage, thereby increasing the service life of the connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of a chassis in the prior art;

[0019] Figure 2 is a schematic diagram of the structure of the daughter card;

[0020] Figure 3 It is a schematic diagram of the structure of an anti-drop screw and a snap ring in the prior art;

[0021] Figure 4 It is a structural schematic diagram of the tilted state of the heat dissipation cold plate and the daughter card during the installation of the daughter card in the prior art;

[0022] Figure 5 This is a schematic diagram of the structure of the heat dissipation cold plate and the ejector rod of this application;

[0023] Figure 6 This is a schematic diagram of the structure of the chassis in this application.

[0024] Explanation of the reference numerals: 1. daughter card; 11. second electrical connector; 2. heat dissipation cold plate; 21. fixing screw; 3. housing; 31. mounting groove; 32. annular groove; 4. PCB base plate; 41. first electrical connection; 5. upper cover plate; 6. retaining ring; 7. anti-slip screw; 8. ejector rod. DETAILED DESCRIPTION

[0025] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0026] The following describes the implementation methods of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present application.

[0027] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0028] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The illustrations only show the components related to the present application rather than being drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed at will, and the component layout may also be more complicated.

[0029] Additionally, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the aspects described may be practiced without these specific details.

[0030] An embodiment of the present application provides a chassis.

[0031] like Figure 1 As shown, a chassis includes a shell 3, a PCB base plate 4, an upper cover plate 5, a daughter card 1 and a heat dissipation cold plate 2; one end of the shell 3 is open, the shell 3 is used to place electrical components, and the upper cover plate 5 is used to close the opening.

[0032] The outer surface of the shell 3 is provided with a first electrical connector 41 . Specifically, the PCB base plate 4 is fixed on an outer surface of the shell 3 , and the first electrical connector 41 is provided on the side of the PCB base plate 4 facing away from the shell 3 .

[0033] like Figure 5 and Figure 6 As shown, the daughter card 1 is installed on one side of the heat dissipation cold plate 2, and the heat dissipation cold plate 2 is connected to the housing 3; the daughter card 1 is provided with a second electrical connector 11 that is docked with the first electrical connector 41, and the daughter card 1 and the PCB base plate 4 form an electrical connection when the first electrical connector 41 and the second electrical connector are docked, and the daughter card 1 is fixed to the housing 3 through the heat dissipation cold plate 2. Among them, the heat dissipation cold plate 2 is provided with an ejector rod 8, and the ejector rod 8 is threadedly connected to the heat dissipation cold plate 2, and one end of the ejector rod 8 is located on the side of the heat dissipation cold plate 2 facing away from the housing 3. When disassembling the daughter card 1, the ejector rod 8 is rotated so that the other end of the ejector rod 8 is pressed against the side of the housing 3 facing the heat dissipation cold plate 2, so that the first electrical connector 41 and the second electrical connector 11 are separated.

[0034] When installing the daughter card 1 in the present application, the daughter card 1 is first fixed on the heat dissipation cold plate 2, and then the first electrical connection 41 and the second electrical connection are aligned, and pressure is applied to the heat dissipation cold plate 2 to dock the first electrical connection 41 and the second electrical connection, and then the heat dissipation cold plate 2 and the shell 3 are fixedly connected. During the installation process, the first electrical connection 41 and the second electrical connection are aligned and quickly docked, and there is no tilted state between the heat dissipation cold plate 2 and the daughter card 1, which avoids the situation where the first electrical connection 41 and the second electrical connection are docked at an inclined angle. The daughter card 1 connector plug can be in a parallel state and plugged with the corresponding connector socket on the bottom plate. It can effectively prevent the phenomenon of connector damage, thereby increasing the service life of the connector. When disassembling the daughter card 1, remove the connector between the heat dissipation cold plate 2 and the shell 3, and gradually tighten the ejector rod 8. The ejector rod 8 applies a force to the shell 3 to drive the heat dissipation cold plate 2 away from the shell 3, providing power for the separation of the first electrical connection 41 and the second electrical connection.

[0035] The heat dissipation cold plate 2 and the housing 3 are connected by fixing screws 21 or fixing threads. The heat dissipation cold plate 2 is a supporting frame of the daughter card 1, providing heat dissipation for the daughter card 1. The heat dissipation cold plate 2 is provided with a plurality of countersunk holes for installing fixing screws 21 or fixing screws 21. The through holes at the anti-slip screws 7 of the heat dissipation cold plate 2 are changed to countersunk holes and ordinary fixing screws 21 or fixing bolts. The number of screw threads for installing the heat dissipation cold plate 2 can also reach more than 7 threads as needed, ensuring the reliability of the threaded connection.

[0036] The ejector rod 8 is an ejector bolt or an ejector screw, and the screw head of the ejector bolt or the ejector screw is located at a side of the heat dissipation cold plate 2 facing away from the housing 3 .

[0037] The outer surface of the housing 3 is provided with a mounting groove 31 , the PCB base plate 4 is located in the mounting groove, and the daughter card 1 is located in the mounting groove 31 .

[0038] The mounting groove 31 is in a long direction, the first electrical connector 41 is located in the mounting groove 31, and two ejector rods 8 are provided on the heat dissipation cold plate 2, and the two ejector rods 8 are respectively located on both sides of the second electrical connector 11, and the connection line of the two ejector rods 8 is parallel to the short side of the mounting groove 31. When removing the daughter card 1, the two ejector rods 8 are tightened alternately, and the two ejector rods 8 are aligned with the second electrical connector 11. When tightening the ejector rods 8, the heat dissipation cold plate 2 and the daughter card 1 are prevented from tilting in the long side direction of the mounting groove 31.

[0039] The heat dissipation cold plate 2 includes a mounting plate and heat dissipation fins, and the heat dissipation fins are fixed on the mounting plate. In one embodiment, the heat dissipation fins and the mounting plate are an integrated structure, and an annular groove 32 is provided on the outer edge of the mounting groove 31, and the mounting edge is located in the annular groove 32. The edge of the mounting plate and the bottom of the annular groove 32 are threadedly connected by a connecting piece.

[0040] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A chassis, characterized in that: It comprises a housing (3), a daughter card (1) and a heat dissipation cold plate (2); A first electrical connector (41) is provided on the outer surface of the shell (3); the daughter card (1) is mounted on one side of a heat dissipation cold plate (2); the heat dissipation cold plate (2) and the shell (3) are connected; a second electrical connector (11) is provided on the daughter card (1) and is connected to the first electrical connector (41); and the daughter card (1) is fixed to the shell (3) via the heat dissipation cold plate (2); The heat dissipation cold plate (2) is provided with an ejector rod (8), the ejector rod (8) and the heat dissipation cold plate (2) are threadedly connected, one end of the ejector rod (8) is located on the side of the heat dissipation cold plate (2) facing away from the shell (3), and when the sub-card (1) is removed, the ejector rod (8) is rotated so that the other end of the ejector rod (8) is pressed against the side of the shell (3) facing the heat dissipation cold plate (2), so that the first electrical connector (41) and the second electrical connector (11) are separated.

2. The chassis according to claim 1, characterized in that: The heat dissipation cold plate (2) and the housing (3) are connected via fixing screws (21) or fixing threads.

3. The chassis according to claim 1, characterized in that: The ejector rod (8) is an ejector bolt or an ejector screw, and the screw head of the ejector bolt or the ejector screw is located on the side of the heat dissipation cold plate (2) facing away from the shell (3).

4. The chassis according to claim 1, characterized in that: An installation groove (31) is provided on the outer side surface of the housing (3), and the sub-card (1) is located in the installation groove (31).

5. The chassis according to claim 4, characterized in that: The mounting groove (31) is in a long direction, the first electrical connector (41) is located in the mounting groove (31), two ejector rods (8) are provided on the heat dissipation cold plate (2), the two ejector rods (8) are respectively located on two sides of the second electrical connector (11), and the connecting line of the two ejector rods (8) is parallel to the short side of the mounting groove (31).

6. The chassis according to claim 4, characterized in that: The heat dissipation cold plate (2) comprises a mounting plate and heat dissipation fins, the heat dissipation fins are fixed on the mounting plate, an annular groove (32) is provided on the outer edge of the mounting groove (31), the mounting edge is located in the annular groove (32), and the edge of the mounting plate and the groove bottom of the annular groove (32) are threadedly connected via a connecting piece.

Images