Server case capable of realizing self-locking of PCB (printed circuit board) card board

Abstract

The invention discloses a server case capable of realizing the self-locking of a PCB (Printed Circuit Board) clamping board, which comprises the PCB clamping board, a case shell and a lock catch assembly, a guide rail for assisting the drawing and inserting of the PCB clamping board is arranged in the case shell, a golden finger female seat is arranged at the rear end of the case shell, a golden finger is arranged at the rear end of the PCB clamping board, the lock catch assembly is positioned at the front end of the case shell, and the PCB clamping board is arranged in the case shell. The lock catch assembly is arranged on the side portion of the PCB clamping plate in the pulling and inserting movement direction of the PCB clamping plate, or the lock catch assembly is arranged at the bottom of the guide rail. When the golden finger is inserted into the golden finger female seat, the lock catch assembly is shifted, so that the PCB clamping plate is fixedly connected with the guide rail through the lock catch assembly, and the PCB clamping plate is self-locked in the case shell. The device has the advantages of being compact in structure, convenient to operate, high in connection reliability and the like, and the PCB clamping plate can be fixed very conveniently.

Description

Technical Field

[0001] The invention belongs to the technical field of audio and video transmission, and in particular relates to a server chassis capable of realizing self-locking of a PCB card board. Background Art

[0002] The existing server chassis with movable PCB boards on the market are generally divided into two structures: One is that the front panel of the server chassis cannot be opened. The gold finger female socket 200 of the PCB card board 100 is arranged at the front of the chassis. The PCB card board 100 is pulled out from the back and locked with the hand screw 300. The signal interface 400 is set at the back, so the signal line is also connected from the back. This server chassis has better stability, but the disadvantage is that the locking structure and signal interface are arranged at the back, which takes up a lot of space. Figure 1 shown.

[0003] The other is that the front panel of the server chassis can be opened, and the gold finger female socket 200 of the PCB card board 100 is arranged at the rear end. The PCB card board 100 is pulled out from the front end and can only be fixed at the front end. The signal interface 400 is set at the rear end, and the signal line is plugged in from the rear end. Since the front panel is a movable structure that can be opened, the overall stability of the server chassis is low. However, since there is no fixing structure such as hand screws 300 at the rear end, the overall chassis occupies less space. Figure 2 shown.

[0004] In the prior art, in order to fix the PCB boards 100, a push rod 503 is provided on the front panel 501 of the chassis. After all the PCB boards 100 are inserted, the front panel 501 is closed and the hand screws 300 on both sides of the front panel 501 are tightened. The push rod 503 will push all the PCB boards 100 forward to prevent them from moving backward. Figure 3 This approach has the following disadvantages: (1) Since the PCB board 100 must be supported by the front panel 501, when the user replaces the PCB board 100, if the user starts to connect the rear-end signal line without closing the front panel 501, it is easy for the PCB board 100 to be pushed out from the front of the chassis by the rear-end push, which is a very bad user experience. (2) If the parts processing error plus the assembly error result in an overall smaller size, the PCB card board 100 will not be tightly pressed and there will be loose space, which will lead to poor contact of the gold fingers of the PCB card board 100 and functional problems; (3) If the parts processing error plus the assembly error result in an overall larger size, the PCB board 100 will be pushed too tight, causing the PCB board 100 to deform, and the probability of functional problems is very high; (4) Tightening the PCB board 100 too tightly will lead to another problem, which is that the hand screw 300 cannot be completely tightened to the bottom, resulting in a relatively large gap or step difference between the front panel 501 and the chassis shell 500, seriously affecting the appearance of the product. In addition, the user experience of hand screwing is also very poor. When tightened, there is a lot of resistance, making it difficult to screw in.

[0005] (5) Since the PCB card 100 is relatively long and there is a gap between the PCB card 100 and the upper and lower guide rails inside the chassis shell 500, it is difficult to remove and rub it smoothly if there is no gap. The connecting rod assembly 502 of the front panel 501 is usually set at the upper left of the PCB card 100, and the gold finger of the PCB card 100 is located at the lower right of the card. Therefore, the tightening force provided by the ejector rod 503 is not on the same horizontal line, which can easily cause the PCB card 100 to tilt. The pin spacing of the gold finger is very small (0.5mm / pich). The deflection of the PCB card is very likely to cause poor contact of the gold finger. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a server chassis with a compact structure, convenient operation, high reliability and self-locking PCB card board, in order to address the problem of PCB card board in existing audio and video transmission server chassis. To achieve the above object, the present invention can adopt the following technical solutions: A server chassis capable of achieving self-locking of a PCB card board, the server chassis being used for audio and video transmission, comprising a PCB card board, a chassis housing, and a locking assembly. The chassis housing is internally provided with a guide rail for assisting in the insertion and extraction of the PCB card board, a gold finger female seat is provided at the rear end of the chassis housing, and a gold finger is provided at the rear end of the PCB card board. The locking assembly is located at the front end of the chassis housing and is arranged on the side of the PCB card board along the insertion and extraction movement direction of the PCB card board, or the locking assembly is arranged at the bottom of the guide rail. When the gold finger is inserted into the gold finger female seat, the locking assembly is toggled, so that the PCB card board is connected and fixed to the guide rail via the locking assembly, thereby achieving self-locking of the PCB card board within the chassis housing. As a further improvement of the present invention, the lock assembly includes a lock body, which adopts an elastic metal sheet structure; when the PCB card is self-locked in the chassis shell, the lock body is respectively connected and fixed to the PCB card and the guide rail. As a further improvement of the present invention, the front end of the PCB card is provided with an elongated hole and a first connecting hole; the upper part of the lock body is provided with a lock hook, and the lower part of the lock body is provided with a second connecting hole corresponding to the first connecting hole. A screw column is riveted in the second connecting hole, and a screw is screwed into the screw column and the first connecting hole to achieve a rotational connection between the lock body and the PCB card; when the gold finger is inserted into the gold finger female seat, the lock body is rotated left and right, the lock hook is inserted into the elongated hole, and the bottom of the lock body is inserted into the guide rail to achieve self-locking of the PCB card. As a further improvement of the present invention, a spring washer and a first flat washer are provided between the screw and the PCB card board, and a second flat washer is provided between the lock body and the PCB card board. As a further improvement of the present invention, a limiting plate is provided on the side of the lock body. When the PCB card is self-locked, the limiting plate abuts against the side of the PCB card. As a further improvement of the present invention, a first connection hole is provided at the front end of the PCB card; a lock hook is provided at the side of the lock body, and a second connection hole corresponding to the first connection hole is provided at the end of the lock body. Screws are screwed into the second connection hole and the first connection hole, and the screws are tightened by means of patch nuts to achieve a rotational connection between the lock body and the PCB card; when the gold finger is inserted into the gold finger female seat, the lock body is rotated up and down, and the lock hook is inserted into the guide rail to achieve self-locking of the PCB card. As a further improvement of the present invention, the front end of the PCB card board is further provided with an upper limit hole and a lower limit hole, and the lock body is provided with a limit protrusion, which is located above the lock hook; when the PCB card board is in a locked state, the limit protrusion is inserted into the lower limit hole, and when the PCB card board is in an unlocked state, the limit protrusion is inserted into the upper limit hole. As a further improvement of the present invention, a locking limit hole is provided on the guide rail, and an elastic buffer is provided in the locking limit hole; when the PCB card is in a locked state, the locking assembly is inserted into the locking limit hole. As a further improvement of the present invention, a notch is provided at the bottom of the PCB card board, a locking hook is provided at one end of the lock body, and a second connecting hole is provided at the other end of the lock body. A mounting hole corresponding to the second connecting hole is provided on the guide rail, and screws are screwed into the second connecting hole and the mounting hole to achieve connection between the lock body and the guide rail, and the locking hook is located on the outside of the end of the guide rail; when the gold finger is inserted into the gold finger female seat, the lock body is lifted up and the locking hook is inserted into the notch to achieve self-locking of the PCB card board.

[0007] As a further improvement of the present invention, an elastic buffer is provided on the side of the lock body. When the lock hook is inserted into the notch, the elastic buffer is located between the lock hook and the notch. Compared with the prior art, the advantages of the present invention are: The server chassis capable of self-locking a PCB card of the present invention has a locking assembly disposed at the front end of the chassis shell. Specifically, the locking assembly can be disposed on the side of the PCB card along the insertion and withdrawal direction of the PCB card, or can be disposed at the bottom of a guide rail. The locking assembly and the gold finger are almost on the same horizontal line, thereby greatly eliminating the hidden danger of the PCB card being tilted under force. When the gold finger is inserted into the gold finger female seat, the locking assembly is toggled so that the PCB card is connected and fixed to the guide rail via the locking assembly, thus achieving self-locking of the PCB card in the chassis shell. Correspondingly, the locking assembly is toggled to unlock the PCB card from the guide rail, which is convenient to operate and does not cause any appearance problems between the front panel and the chassis shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is one of the structural diagrams of a server chassis in the prior art; Figure 2 This is the second structural diagram of a server chassis in the prior art; Figure 3 A schematic diagram of the internal structure of a server chassis in the prior art; Figure 4 This is a schematic diagram of the structural principle of a server chassis capable of achieving self-locking of PCB boards in specific embodiment 1 of the present invention; Figure 5 for Figure 4 Schematic diagram of the structural principle at A in the middle; Figure 6 This is a schematic diagram of the explosion structure principle of the lock assembly in specific embodiment 1 of the present invention; Figure 7 Schematic diagrams of the structural principle of the self-locking PCB board in specific embodiment 1 of the present invention; wherein, Figure (a) shows the structural principle schematic diagram of the PCB board in the unlocked state, Figure (b) shows the structural principle schematic diagram of the PCB board in the locked state, and Figure (c) shows the structural principle schematic diagram of the PCB board in the locked state from a side view; Figure 8 This is a schematic diagram of the structural principle of a server chassis capable of achieving self-locking of PCB boards in a specific embodiment 2 of the present invention; Figure 9 for Figure 8 Schematic diagram of the structural principle at B in the middle; Figure 10 This is a schematic diagram of the explosion structure principle of the lock assembly in specific embodiment 2 of the present invention; Figure 11 Schematic diagram of the structural principle of the self-locking PCB board in specific embodiment 2 of the present invention; wherein, Figure (a) shows the structural principle schematic diagram of the PCB board in the unlocked state, and Figure (b) shows the structural principle schematic diagram of the PCB board in the locked state; Figure 12 This is a schematic diagram of the structural principle of a server chassis capable of achieving self-locking of PCB boards in specific embodiment 3 of the present invention; Figure 13 for Figure 12 Schematic diagram of the structural principle at C in the middle; Figure 14 This is a schematic diagram of the explosion structure principle of the lock assembly in specific embodiment 3 of the present invention; Figure 15 Schematic diagram of the structural principle of the self-locking PCB board in specific embodiment 3 of the present invention; wherein, Figure (a) shows the structural principle schematic diagram of the PCB board in the unlocked state, and Figure (b) shows the structural principle schematic diagram of the PCB board in the locked state; Legend: 100, PCB card board; 101, gold finger; 102, long hole; 103, first connecting hole; 104, upper limit hole; 105, lower limit hole; 106, notch; 200, gold finger socket; 300, thumb screw; 400, signal interface; 500, chassis shell; 501, front panel; 502, connecting rod assembly; 503, push rod; 504, guide rail; 505, locking limit hole; 506, elastic buffer; 507, mounting hole; 600, lock assembly; 601, lock body; 602, lock hook; 603, limit plate; 604, second connecting hole; 605, screw column; 606, screw; 607, spring washer; 608, first flat washer; 609, second flat washer; 610, pick; 611, limit bump; 612, patch nut. DETAILED DESCRIPTION

[0009] The present invention will be further described below in conjunction with the accompanying drawings and specific preferred embodiments, but the scope of protection of the present invention is not limited thereby.

[0010] In the description of the present invention, it should be understood that the terms "side", "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0011] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0012] Example 1 like Figures 4 to 7 As shown, the present invention provides a server chassis capable of self-locking a PCB board, used for audio and video transmission. The server chassis includes a PCB board 100, a chassis housing 500, and a locking assembly 600. The chassis housing 500 has guide rails 504 positioned on both the top and bottom sides to facilitate insertion and removal of the PCB board 100. The rear end of the chassis housing 500 is provided with a gold finger female socket 200, and the rear end of the PCB board 100 is provided with a gold finger 101 and a signal interface 400. The latch assembly 600 is located at the front end of the chassis housing 500 and is positioned to the side of the PCB board 100 along the direction of insertion and withdrawal of the PCB board 100. When the PCB board 100 is inserted into the chassis housing 500 from the front end and the gold finger 101 is inserted into the gold finger female socket 200, the latch assembly 600 is actuated, so that the PCB board 100 is connected and fixed to the guide rail 504 via the latch assembly 600, thereby achieving self-locking of the PCB board 100 within the chassis housing 500. It will be appreciated that the specific structural arrangement within the chassis housing 500 can be achieved using conventional techniques and will not be further described here.

[0013] In this embodiment, by positioning the latch assembly 600 at the front end of the chassis housing 500—specifically, the latch assembly 600 can be positioned on the side of the PCB board 100 along the direction of insertion and withdrawal of the PCB board 100, or at the bottom of the guide rail 504—the latch assembly 600 and the gold finger 101 are nearly aligned horizontally, significantly eliminating the potential risk of the PCB board 100 tilting under load. After the gold finger 101 is inserted into the gold finger socket 200, the latch assembly 600 is actuated, securing the PCB board 100 to the guide rail 504 via the latch assembly 600, thereby achieving self-locking of the PCB board 100 within the chassis housing 500. Accordingly, actuating the latch assembly unlocks the PCB board 100 from the guide rail 504, providing convenient operation without causing any cosmetic issues between the front panel and the chassis housing 500.

[0014] In this embodiment, the latch assembly 600 includes a latch body 601, which is constructed of a resilient metal sheet. Specifically, the latch body 601 is cut from 1.0 mm thick sheet metal into a predetermined shape and then bent into shape. When the PCB board 100 is self-locked within the chassis housing 500, the latch body 601 is connected and secured to the PCB board 100 and the guide rail 504. When the PCB board 100 needs to be removed and replaced from the front of the chassis housing 500, the latch assembly 600, mounted on the PCB board 100, can be locked or unlocked by moving the latch body 601. like Figure 6 As shown, the front end of the PCB card board 100 is provided with an elongated hole 102 and a first connecting hole 103. The elongated hole 102 facilitates the operator to pinch the PCB card board 100 with his hands for insertion and extraction operations. The upper part of the lock body 601 is provided with a lock hook 602, and the lower part of the lock body 601 is provided with a second connecting hole 604 corresponding to the first connecting hole 103. A hexagonal screw column 605 is riveted into the second connecting hole 604. Screws 606 are screwed into the screw column 605 and the first connecting hole 103 to achieve a rotational connection between the lock body 601 and the PCB card board 100. Figure 7 As shown, after the gold finger 101 is inserted into the gold finger female socket 200, the lock body 601 is rotated clockwise, the lock hook 602 is inserted into the elongated hole 102, and the bottom of the lock body 601 is inserted into the guide rail 504, thereby achieving self-locking of the PCB card 100. When the PCB card 100 needs to be replaced, the lock body 601 is rotated counterclockwise, the lock hook 602 is pulled out of the elongated hole 102, and the bottom of the lock body 601 is removed from the guide rail 504.

[0015] In this embodiment, a paddle 610 is further provided at the end of the lock body 601. The paddle 610 is close to the lock hook 602 and away from the second connection hole 604. By rotating the paddle 610, the lock body 601 can be easily driven to rotate. Figure 4 and Figure 5 As shown, a locking stop hole 505 is provided on the guide rail 504, and an elastic buffer 506 is positioned within the locking stop hole 505. When the PCB board 100 is locked, the bottom of the latch body 601 is inserted into the locking stop hole 505. Since manufacturing and assembly errors are inevitable for structural components, to compensate for these dimensional errors, in this embodiment, silicone rubber is provided between the latch body 601 and the locking stop hole 505 as the elastic buffer 506. This ensures that the gold finger 101 of the PCB board 100 is securely inserted into the gold finger female socket 200, regardless of whether the size is too large or too small.

[0016] like Figure 6As shown, a spring washer 607 and a first flat washer 608 are positioned between the screw 606 and the PCB board 100, and a second flat washer 609 is positioned between the latch body 601 and the PCB board 100. In this embodiment, the latch body 601 is secured to the side of the PCB board 100 by two flat washers on the left and right sides, along with the spring washer 607 and the cap screw. The provision of a flat washer on each side of the PCB board 100 ensures that, during circular motion, the latch body 601 only contacts and rubs against the flat washers, and this friction is limited to the flat washers, minimizing wear on the PCB board 100 and the latch body 601. The provision of a spring washer 607 below the screw 606 provides a pulling force on the latch body 601, tilting it toward the elongated hole 102, ensuring that the latch hook 602 remains firmly engaged within the elongated hole 102 of the PCB board 100. Because once loosened, it is unlocked, so it is necessary to ensure that the lock hook 602 is firmly connected to the elongated hole 102.

[0017] like Figure 6 and Figure 7 As shown, a limit plate 603 is provided on the side of the lock body 601. When the PCB card 100 is self-locked, the limit plate 603 abuts against the side of the PCB card 100 to prevent the lock body 601 from rotating too much and causing the PCB card 100 to be squeezed.

[0018] In this embodiment, the lock assembly 600 is designed with a paddle 610 (hand-gripping position) for easy user operation and a limit plate 603 (flip limit) for limiting the flip angle. Figure 7 As shown, the lock body 601 rotates around the cylindrical axis of the hexagonal screw column 605. Assuming the lock body 601 is in the unlocked state, it is probably in a horizontal state. The user only needs to touch the pick 610 with his finger and rotate it upward until the lock hook 602 moves to the vertical edge of the PCB board 100. Then, gently move the pick 610 to the right a certain distance. Due to the excellent elasticity of the thin sheet metal with a thickness of 1.0mm, the lock hook 602 is hooked into the elongated hole 102 after deforming in the deformation area. At this time, the bottom end of the lock body 601 and the locking limit hole 505 complete the pressing action. The PCB board 100 is pushed forward and slid by this pressing action. The gold finger 101 is inserted into the gold finger female seat 200, thus completing the locking of the PCB board 100. The above process, the reverse operation is the process of unlocking the PCB card board 100. It can be understood that since the structure of the lock body 601 needs to occupy a portion of the edge area of the PCB board 100, this area cannot be used for wiring or layout of components and must be completely empty.

[0019] Example 2 like Figures 8 to 11As shown, the server chassis of the present invention that can realize self-locking of PCB card boards has a similar structural arrangement and working principle to the server chassis in Example 1, and the main difference is that: a first connection hole 103 is provided at the front end of the PCB card board 100; a lock hook 602 is provided at the side of the lock body 601, and a second connection hole 604 corresponding to the first connection hole 103 is provided at the end of the lock body 601. A screw 606 with a spring washer is screwed into the second connection hole 604 and the first connection hole 103, and the screw 606 is tightened by the patch nut 612 to realize the rotational connection between the lock body 601 and the PCB card board 100. The screw 606 with the spring washer can continuously provide a pressing force to the lock body 601, so that the lock body 601 is tightly attached to the PCB card board 100. As shown Figure 11 As shown, after the gold finger 101 is inserted into the gold finger base 200, the lock body 601 is rotated downward, and the lock hook 602 is inserted into the guide rail 504 to achieve self-locking of the PCB card board 100; accordingly, the lock body 601 is lifted upward, and the lock hook 602 is pulled out from the guide rail 504 to achieve unlocking of the PCB card board 100.

[0020] like Figure 10 and Figure 11 As shown, the front end of the PCB board 100 is further provided with an elongated hole 102, an upper stop hole 104, and a lower stop hole 105. The elongated hole 102 facilitates gripping the PCB board 100 for insertion and extraction. The latch body 601 is provided with a stopper 611, located above the latch hook 602. When the PCB board 100 is locked, the stopper 611 inserts into the lower stop hole 105. When the PCB board 100 is unlocked, the stopper 611 inserts into the upper stop hole 104. The provision of the upper stop hole 104 and the lower stop hole 105 ensures a secure connection between the PCB board 100, the latch body 601, and the guide rail 504 in the locked state, while also preventing the latch body 601 from interfering with the insertion and extraction of the PCB board 100 in the unlocked state.

[0021] In this embodiment, a paddle 610 is provided at the end of the latch body 601. The paddle 610 and the second connection hole 604 are located at opposite ends of the latch body 601. By lifting or pressing the paddle 610, the latch body 601 moves in a circular motion around the screw 606. The latch body 601 only needs to move a short distance up and down to lock and unlock the PCB board 100. It will be appreciated that in this embodiment, the free space of the PCB board 100 is slightly larger than in Example 1. This is because the stopper 611 will contact the PCB board 100 and generate friction. Therefore, the distance between the second connection hole 604 and the stopper 611 is slightly longer to ensure that the deformation area of the latch body 601 is longer, making it easier to deform, reducing friction, and extending the life of the PCB board 100.

[0022] like Figure 8 and Figure 9 As shown, a locking stop hole 505 is provided on the guide rail 504, and an elastic buffer 506 is positioned within the locking stop hole 505. When the PCB board 100 is locked, the bottom of the locking hook 602 is inserted into the locking stop hole 505. Since manufacturing and assembly errors are inevitable for structural components, to compensate for these dimensional errors, in this embodiment, silicone rubber is provided between the locking hook 602 and the locking stop hole 505 as the elastic buffer 506. This ensures that the gold finger 101 of the PCB board 100 is securely inserted into the gold finger base 200, regardless of whether the PCB board 100 is too large or too small.

[0023] Example 3 like Figures 12 to 15 As shown, the server chassis of the present invention that can realize self-locking of PCB card boards has a similar structural setting and working principle to the server chassis in Example 1. The main difference is that: a notch 106 is provided at the bottom of the PCB card board 100, and the lock body 601 is made of a thin sheet metal material with a thickness of 1.0 mm. A lock hook 602 is provided at one end of the lock body 601, and two second connection holes 604 are provided side by side at the other end of the lock body 601. The guide rail 504 is provided with a mounting hole 507 corresponding to the second connection holes 604. Screws 606 are screwed into the second connection holes 604 and the mounting holes 507 to realize the connection between the lock body 601 and the guide rail 504. The lock hook 602 is located on the outside of the end of the guide rail 504. Figure 15 As shown, after the gold finger 101 is inserted into the gold finger female seat 200, the lock body 601 is lifted up and the lock hook 602 is inserted into the notch 106 to achieve self-locking of the PCB card board 100.

[0024] like Figure 14 As shown, in this embodiment, a space for accommodating a latch body 601 is machined on the reverse side of the guide rail 504, and the latch body 601 and the guide rail 504 are fixed by screws, thereby forming an elastic latch structure. The elasticity of the latch body 601 and the latch hook 602 hook the notch 106 of the PCB card 100, generating a tensile force to prevent the PCB card 100 from being displaced by the rear-end thrust.

[0025] like Figure 15As shown, the latch body 601 is fixed to the reverse side of the guide rail 504, and the latch hook 602 extends to the outside of the end of the guide rail 504. Therefore, when the PCB card 100 slides into the chassis housing 500 through the guide groove on the guide rail 504, it is necessary to press down the paddle 610 with a finger. The latch body 601 deforms, causing the latch hook 602 to descend, and the PCB card 100 is smoothly pushed into the chassis housing 500. When the PCB card 100 is pushed in all the way and the gold finger 101 is inserted into the gold finger female socket 200, the paddle 610 is reversed and lifted upward, causing the latch hook 602 to rise and hook into the notch 106 at the bottom of the PCB card 100, completing the fixation.

[0026] like Figure 12 and Figure 13 As shown, an elastic buffer 506 is provided on the side of the latch body 601. When the latch hook 602 is inserted into the notch 106, the elastic buffer 506 is located between the latch hook 602 and the notch 106. Since structural components may have processing and assembly errors, the elastic buffer 506 made of silicone material ensures that the gold finger 101 of the PCB card 100 can be firmly inserted into the gold finger female seat 200 even if the component size is too large or too small.

[0027] Although the present invention is disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can, without departing from the spirit and technical solutions of the present invention, use the methods and technical contents disclosed above to make many possible changes and modifications to the technical solutions of the present invention, or modify them into equivalent embodiments with equivalent changes. Therefore, any simple modification, equivalent replacement, equivalent change and modification made to the above embodiments based on the technical spirit of the present invention without departing from the content of the technical solutions of the present invention, shall still fall within the scope of protection of the technical solutions of the present invention.

Claims

1. A server chassis capable of self-locking a PCB card board, the server chassis being used for audio and video transmission, characterized in that: The invention comprises a PCB card board (100), a chassis shell (500) and a locking assembly (600), wherein a guide rail (504) for assisting the insertion and extraction of the PCB card board (100) is provided inside the chassis shell (500), a gold finger female seat (200) is provided at the rear end of the chassis shell (500), a gold finger (101) is provided at the rear end of the PCB card board (100), the locking assembly (600) is located at the front end of the chassis shell (500), and the locking assembly (600) is provided at the front end of the chassis shell (500). 0) is arranged on the side of the PCB card board (100) along the insertion and withdrawal movement direction of the PCB card board (100), or the locking component (600) is arranged at the bottom of the guide rail (504); when the gold finger (101) is inserted into the gold finger female seat (200), the locking component (600) is toggled, so that the PCB card board (100) is connected and fixed to the guide rail (504) through the locking component (600), so that the PCB card board (100) is self-locked in the chassis shell (500).

2. The server chassis capable of realizing self-locking of PCB cards according to claim 1, characterized in that: The locking assembly (600) comprises a locking body (601), wherein the locking body (601) adopts an elastic metal sheet structure; when the PCB card (100) is self-locked in the chassis housing (500), the locking body (601) is respectively connected and fixed to the PCB card (100) and the guide rail (504).

3. The server chassis capable of achieving self-locking of PCB cards according to claim 2, characterized in that: The front end of the PCB card (100) is provided with an elongated hole (102) and a first connecting hole (103); the upper portion of the lock body (601) is provided with a lock hook (602); the lower portion of the lock body (601) is provided with a second connecting hole (604) corresponding to the first connecting hole (103); a screw column (605) is riveted into the second connecting hole (604); a screw (606) is screwed into the screw column (605) and the first connecting hole (103) to achieve rotational connection between the lock body (601) and the PCB card (100); when the gold finger (101) is inserted into the gold finger female seat (200), the lock body (601) is rotated left and right, the lock hook (602) is inserted into the elongated hole (102), and the bottom of the lock body (601) is inserted into the guide rail (504) to achieve self-locking of the PCB card (100).

4. The server chassis capable of achieving self-locking of PCB boards according to claim 3, characterized in that: A spring washer (607) and a first flat washer (608) are provided between the screw (606) and the PCB card (100), and a second flat washer (609) is provided between the lock body (601) and the PCB card (100).

5. The server chassis capable of achieving self-locking of PCB boards according to claim 3, characterized in that: A limiting plate (603) is provided on the side of the lock body (601); when the PCB card (100) is self-locked, the limiting plate (603) abuts against the side of the PCB card (100).

6. The server chassis capable of achieving self-locking of PCB boards according to claim 2, characterized in that: The front end of the PCB card (100) is provided with a first connection hole (103); the side of the lock body (601) is provided with a lock hook (602); the end of the lock body (601) is provided with a second connection hole (604) corresponding to the first connection hole (103); screws (606) are screwed into the second connection hole (604) and the first connection hole (103), and the screws (606) are locked by the patch nut (612) to achieve rotational connection between the lock body (601) and the PCB card (100); when the gold finger (101) is inserted into the gold finger female seat (200), the lock body (601) is rotated up and down, and the lock hook (602) is inserted into the guide rail (504) to achieve self-locking of the PCB card (100).

7. The server chassis capable of achieving self-locking of PCB boards according to claim 6, characterized in that: The front end of the PCB card (100) is further provided with an upper limit hole (104) and a lower limit hole (105); the lock body (601) is provided with a limit convex point (611), and the limit convex point (611) is located above the lock hook (602); when the PCB card (100) is in a locked state, the limit convex point (611) is inserted into the lower limit hole (105); when the PCB card (100) is in an unlocked state, the limit convex point (611) is inserted into the upper limit hole (104).

8. The server chassis capable of achieving self-locking of PCB boards according to claim 3 or 6, characterized in that: A locking limit hole (505) is provided on the guide rail (504), and an elastic buffer (506) is provided in the locking limit hole (505); when the PCB card (100) is in a locked state, the locking assembly (600) is inserted into the locking limit hole (505).

9. The server chassis capable of achieving self-locking of PCB boards according to claim 2, characterized in that: The bottom of the PCB card (100) is provided with a notch (106), one end of the lock body (601) is provided with a lock hook (602), the other end of the lock body (601) is provided with a second connecting hole (604), the guide rail (504) is provided with a mounting hole (507) corresponding to the second connecting hole (604), screws (606) are screwed into the second connecting hole (604) and the mounting hole (507) to achieve connection between the lock body (601) and the guide rail (504), and the lock hook (602) is located outside the end of the guide rail (504); when the gold finger (101) is inserted into the gold finger female seat (200), the lock body (601) is lifted up, and the lock hook (602) is inserted into the notch (106) to achieve self-locking of the PCB card (100).

10. The server chassis capable of achieving self-locking of PCB boards according to claim 9, characterized in that: An elastic buffer (506) is provided on the side of the lock body (601). When the lock hook (602) is inserted into the notch (106), the elastic buffer (506) is located between the lock hook (602) and the notch (106).

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