Spring screw connecting structure, display card device and electronic equipment

Abstract

The invention relates to a spring and screw connecting structure, a display card device and electronic equipment, the spring and screw connecting structure is used for connecting a first connecting piece and a second connecting piece, a first spring sleeves a screw rod part of a screw rod, the screw rod part of a screw penetrates into a first mounting hole of the first connecting piece and corresponds to a second mounting hole of the second connecting piece, and the screw rod part of the screw is connected with the second connecting piece. And the clamp spring is clamped on the screw rod part, is positioned between the first connecting piece and the second connecting piece, and is used for preventing the screw from falling off. The adjusting piece can be connected with the screw and the first connecting piece and is used for transmitting part of pressure to the first connecting piece when the nut part of the screw is stressed, the screw moves towards the second connecting piece, the screw rod part of the screw abuts against the second mounting hole, and the screw does not need to be pressed vigorously before being connected to the second mounting hole. And threads of the screw rod part are prevented from being damaged.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of fastening connection, in particular to a spring screw connection structure, a graphics card device and an electronic device. BACKGROUND

[0002] With the development of integrated circuit boards, their functions are becoming increasingly complex, which is accompanied by problems such as a dramatic increase in heat generation. Therefore, a heat sink that can meet the needs of heat dissipation, pre-pressing and fastening is often designed for heat-generating components. The heat sink and the heat-generating component are often in direct or indirect contact through gluing, screw fastening or even welding. For the screw fastening design, it is very important to easily and reliably lock the heat sink without damaging the screw. In general, the spring screw is fixed on the heat sink, and the spring screw or the heat sink module is pre-pressed after the heat sink is placed on the heat-generating component. When the heat sink and the heat-generating component are in full contact, the spring screw fixed on the heat sink is rotated to lock the heat sink, so that the heat sink and the heat-generating component can be in full and reliable contact.

[0003] When the surface area of the heat-generating component is relatively large, it means that a larger pre-pressing force needs to be applied to the heat sink to ensure that the heat sink can be in full and reliable contact with the heat-generating component. Therefore, a spring needs to provide a larger spring force. When the spring screw is locked, it needs to be pressed with great force, and when the heat-conducting material is pre-pressed, the spring screw and the back plate thread interfere, causing damage to the thread. SUMMARY

[0004] The purpose of the present disclosure is to provide a spring screw connection structure, a graphics card device and an electronic device, which at least partially solve the problems in the related art.

[0005] In order to achieve the above-mentioned purpose, according to a first aspect of the present disclosure, a spring screw connection structure is provided, comprising: a first connecting piece comprising a first mounting hole; a screw comprising a screw cap part and a screw rod part, the screw rod part being penetrated by the first mounting hole and being used to connect with a second mounting hole of a second connecting piece; a first spring being sleeved on the screw rod part and being located between the screw cap part and the first connecting piece; a circlip being clamped on the screw rod part and being located on a side of the first connecting piece away from the screw cap part; and an adjusting piece connecting the screw and the first connecting piece and being used to transmit part of the pressure to the first connecting piece when the screw cap part is pressed.

[0006] Optionally, the adjusting piece comprises a first sleeve, and the first sleeve comprises a sleeve body part and a flange part arranged at one end of the sleeve body part. The barrel portion is sleeved on the screw portion and is installed in the first mounting hole; The flange portion abuts against the side of the first connecting piece close to the nut portion, and the end of the barrel portion away from the flange portion abuts against the circlip; The two ends of the first spring abut against the nut portion and the flange portion respectively.

[0007] Optionally, the length of the barrel portion is greater than the thickness of the first connecting piece.

[0008] Optionally, the adjusting piece comprises a second sleeve and a first elastic piece; The second sleeve is sleeved on the screw portion, and the second sleeve comprises a containing cavity having an opening toward the first connecting piece, one end of the first elastic piece abutting against the first connecting piece, and the other end penetrating into the containing cavity through the opening and abutting against the inner bottom surface of the containing cavity; The two ends of the first spring abut against the nut portion and the outer bottom surface of the second sleeve respectively.

[0009] Optionally, the first elastic piece is a second spring, the second spring is sleeved on the screw portion, and the length of the second spring in the initial state is greater than the depth of the containing cavity.

[0010] Optionally, the elastic force of the second spring is less than the elastic force of the first spring.

[0011] Optionally, the adjusting piece comprises a second elastic piece, the second elastic piece is located between the first connecting piece and the nut portion, one end of the second elastic piece abutting against the first connecting piece, and the other end abutting against the end of the first spring away from the nut portion.

[0012] Optionally, the compression amount of the second elastic piece is less than the compression amount of the first spring.

[0013] Optionally, the adjusting piece comprises a third spring, the third spring is located between the circlip and the first connecting piece, and the two ends of the third spring abut against the circlip and the first connecting piece respectively. The two ends of the first spring abut against the nut portion and the first connecting piece respectively.

[0014] Optionally, the first spring is in a pre-compression state.

[0015] According to the second aspect of the present disclosure, a graphics card device is provided, comprising the spring screw connecting structure described above. The first connecting piece is a heat sink, the second connecting piece is a graphics card module, and the spring screw connecting structure is used to connect the heat sink and the graphics card module.

[0016] Optionally, the graphics card module comprises an upper cover plate, a circuit board with a chip, and a back plate with a second mounting hole; The upper cover plate is provided with a relief hole for avoiding the chip; The heat sink is provided with a heat exchange boss for cooling the chip; The screw is sequentially connected in the second mounting hole of the back plate through the first mounting hole of the heat sink, the upper cover plate, and the circuit board; A layer of heat-conducting material is arranged between the heat exchange boss and the chip.

[0017] According to a third aspect of the present disclosure, an electronic device is also provided, comprising the graphics card device.

[0018] By the technical solution, i.e., the spring screw connecting structure of the present disclosure, the first connecting member and the second connecting member are connected, wherein the first spring is sleeved on the screw rod part of the screw rod, the screw rod part of the screw rod is inserted into the first mounting hole of the first connecting member and corresponds to the second mounting hole of the second connecting member, the clamping spring is clamped on the screw rod part and located between the first connecting member and the second connecting member, and is used for preventing the screw rod from falling off. The adjusting member can be connected with the screw rod and the first connecting member, so as to transmit part of the pressure to the first connecting member when the screw rod is pressed, the screw rod moves towards the second connecting member, and the screw rod part of the screw rod abuts against the second mounting hole. Before being connected to the second mounting hole, the screw rod does not need to be pressed with great force, so as to avoid damage to the screw thread of the screw rod part.

[0019] Other features and advantages of the present disclosure will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings are included to provide a further understanding of the present disclosure and constitute a part of the specification, and together with the specific embodiments below, serve to explain the present disclosure, but do not constitute a limitation on the present disclosure. In the drawings: Figure 1 is a structural diagram of the graphics card device provided by some embodiments of the present disclosure, and the adjusting member is not shown in the figure; Figure 2 is an exploded view of the graphics card device provided by some embodiments of the present disclosure, and the adjusting member is not shown in the figure; Figure 3 is a sectional view of the graphics card device provided by some embodiments of the present disclosure, and the adjusting member is not shown in the figure; Figure 4 is a schematic view of the spring screw connecting structure provided by some embodiments of the present disclosure; Figure 5 is a schematic view of the spring screw connecting structure provided by some embodiments of the present disclosure; Figure 6 is a schematic view of a spring screw connecting structure provided by some embodiments of the present disclosure; Figure 7 is a schematic view of a spring screw connecting structure provided by some embodiments of the present disclosure.

[0021] Legend of reference signs 1 - graphics card device; 10 - first connecting piece; 101 - first mounting hole; 20 - second connecting piece; 201 - second mounting hole; 100 - heat sink; 110 - heat exchange boss; 120 - water-cooled plate joint; 200 - graphics card module; 210 - upper cover plate; 220 - circuit board; 221 - chip; 230 - back plate; 240 - heat conductive material layer; 300 - screw; 310 - screw cap part; 320 - screw rod part; 330 - first spring; 340 - circlip; 400 - adjusting piece; 410 - first sleeve; 411 - flange part; 412 - barrel part; 420 - second sleeve; 430 - first elastic piece; 440 - second elastic piece; 450 - third spring. DETAILED DESCRIPTION

[0022] The specific embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely intended to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.

[0023] In the present disclosure, the orientation words such as “up, down, left, right” used without the opposite description generally refer to the up, down, left, right in the drawings; “inner, outer” refers to the inner and outer of the contour of the corresponding components; “far, near” refers to the corresponding structure or the corresponding component far away or close to another structure or component. In addition, the terms “first”, “second” and the like used in the present disclosure are used to distinguish one element from another element, and do not have sequential and important meanings. In addition, in the following description, the same reference signs in different drawings represent the same or similar elements unless otherwise explained. The above definitions are only used to explain and illustrate the present disclosure, and should not be understood as a limitation of the present disclosure.

[0024] In the related art, when the surface area of the heat generating component is relatively large, it means that a larger pre-pressure needs to be applied to the heat sink to ensure that the heat sink can be in full and reliable contact with the heat generating component, so the spring needs to provide a larger spring force. However, after increasing the spring force, on the one hand, it is very laborious to press the spring screw lock, and it will destroy the contact balance state of the heat sink and the heat generating component. Even worse, the larger force makes the threaded part of the screw need to bear a large pulling force when the spring screw is loosened, and the large pulling force will damage the screw and the threads of the support plate, seriously affecting the function or performance of the product. On the other hand, if the screw and the back plate thread are designed to have a small interference or contact, the heat generating component and the heat sink will usually use a heat conducting material, which can make the heat sink in full and reliable contact with the heat generating component after pre-pressing. However, the pre-pressing of the heat conducting material will cause a large interference between the screw and the back plate thread, which will damage the thread and affect the function or performance of the product.

[0025] Based on this, the present disclosure provides a spring screw connection structure, a graphics card device 1 and an electronic equipment, to solve the problems of the need for large force pressing when locking the spring screw and the interference between the spring screw and the back plate 230 thread when pre-pressing the heat conducting material, which causes damage to the thread.

[0026] In order to achieve the above purpose, as Figures 1 to 7 As shown in the first aspect of the present disclosure, a spring screw connection structure is provided, which comprises a first connecting piece 10, a screw 300, a first spring 330, a clamping spring 340 and an adjusting piece 400. The first connecting piece 10 comprises a first mounting hole 101; the screw 300 comprises a screw cap part 310 and a screw rod part 320, the screw rod part 320 is inserted into the first mounting hole 101 and is used to connect with a second mounting hole 201 of a second connecting piece 20; the first spring 330 is sleeved on the screw rod part 320 and is located between the screw cap part 310 and the first connecting piece 10; the clamping spring 340 is clamped on the screw rod part 320 and is located on the side of the first connecting piece 10 away from the screw cap part 310; the adjusting piece 400 connects the screw 300 and the first connecting piece 10, and is used to transmit part of the pressure to the first connecting piece 10 when the screw cap part 310 is pressed.

[0027] The above-described technical solution, namely the spring-screw connection structure disclosed herein, is used to connect the first connecting member 10 and the second connecting member 20. A first spring 330 is sleeved on the screw portion 320 of the screw rod. The screw portion 320 of the screw 300 passes through the first mounting hole 101 of the first connecting member 10 and corresponds to the second mounting hole 201 of the second connecting member 20. A retaining ring 340 is engaged with the screw portion 320 and located between the first connecting member 10 and the second connecting member 20 to prevent the screw 300 from falling off. An adjusting member 400 can connect the screw 300 to the first connecting member 10, so that when the nut portion 310 of the screw 300 is under pressure, part of the pressure is transmitted to the first connecting member 10, causing the screw 300 to move towards the second connecting member 20, and causing the screw portion 320 of the screw 300 to abut against the second mounting hole 201. The screw 300 does not need to be pressed forcefully before connecting to the second mounting hole 201, avoiding damage to the threads of the screw portion 320.

[0028] It should be noted that the adjusting component 400 can be a single part or a component (i.e., including two or more parts). It can be set on the first connecting member 10 or on both sides of the first connecting member 10. It can transmit the pressure of pressing the screw 300 to the first connecting member 10, thereby reducing the pressure transmitted to the second connecting member 20, so as to avoid damage to the thread of the screw stub 320 of the screw 300 due to excessive pressure.

[0029] Optionally, since the first spring 330 is located between the nut portion 310 and the first connecting member 10, and the retaining ring 340 located on the screw portion 320 is used to prevent the screw 300 and the first spring 330 from falling off, the first spring 330 is in a pre-compressed state. It can act on the nut portion 310 and the first connecting member 10 respectively, or on the nut portion 310 and the adjusting member 400 respectively, thereby installing the screw 300 on the first connecting member 10 and ensuring that it will not fall off.

[0030] In addition, the first connector 10 and the second connector 20 can be any two suitable structural components. No specific limitation is made here. The following description will use the first connector 10 as the heat sink 100 and the second connector 20 as the graphics card module 200.

[0031] like Figure 4 As shown, in one possible embodiment, the adjusting member 400 may include a first sleeve 410, the first sleeve 410 including a cylindrical part 412 and a flange part 411 disposed at one end of the cylindrical part 412; the cylindrical part 412 is sleeved on the screw part 320 and installed in the first mounting hole 101; the flange part 411 abuts against the side of the first connecting member 10 near the nut part 310, and the end of the cylindrical part 412 away from the flange part 411 abuts against the retaining ring 340; the two ends of the first spring 330 abut against the nut part 310 and the flange part 411 respectively.

[0032] As shown in Figure 4 The first sleeve 410 includes a barrel portion 412 and a flange portion 411, wherein the flange portion 411 is arranged at one end of the barrel portion 412, and the barrel portion 412 is the main part of the first sleeve 410, which can be in the shape of a cylinder with a certain length and inner diameter. The inner wall of the barrel portion 412 is designed as a smooth cylindrical surface for closely sleeving with the screw rod portion 320. This sleeving structure enables the barrel portion 412 to freely slide along the axial direction of the screw rod portion 320 while maintaining stable coaxiality, ensuring that the adjusting part 400 does not deviate or shake during operation. The outer wall of the barrel portion 412 is precisely machined according to the shape and size of the first mounting hole 101, so that it can be accurately installed in the first mounting hole 101 and tightly fit with the mounting hole wall, thereby realizing stable fixation of the adjusting part 400 in the equipment.

[0033] The flange portion 411 is arranged at the upper end of the barrel portion 412, which can also be in the shape of an annular structure coaxially connected with the barrel portion 412. The outer diameter of the flange portion 411 is larger than that of the barrel portion 412, forming a step-like structure extending outward. This structure design enables the flange portion 411 to abut against the side surface of the first connecting piece 10. Specifically, the flange portion 411 abuts against the side surface of the first connecting piece 10 near the nut portion 310, and through this abutting relationship, the flange portion 411 can tightly connect the first connecting piece 10 and the first sleeve 410 together along the axial direction of the screw rod portion 320, forming an integral structure to realize force transmission and position fixation. At the same time, the arrangement of the flange portion 411 also increases the contact area between the first sleeve 410 and the first connecting piece 10, improving the stability and reliability of the connection and avoiding connection failure due to local stress concentration.

[0034] The barrel portion 412 is sleeved on the screw rod portion 320, and the relative movement between the two is realized through sliding fit. This fitting method enables the screw rod portion 320 to freely extend and retract within the barrel portion 412, thereby realizing the length adjustment function of the adjusting part 400. When the screw rod portion 320 slides within the barrel portion 412, the smooth design of the inner wall of the barrel portion 412 can effectively reduce friction and energy loss, improving the smoothness and accuracy of the adjustment process. At the same time, the barrel portion 412 guides the screw rod portion 320, ensuring that the screw rod portion 320 always moves in the axial direction and avoiding deviation or jamming during movement.

[0035] The cylinder portion 412 is mounted in the first mounting hole 101, and can be connected by interference fit, transition fit or clearance fit. The interference fit and transition fit mounting methods enable the first sleeve 410 to be firmly fixed in the corresponding position of the device and not to be loosened or detached due to external force. At the same time, the size and shape of the first mounting hole 101 match the outer wall of the cylinder portion 412, which can play a good positioning role for the first sleeve 410, ensuring that the installation position of the adjusting part 400 in the device is accurate. When clearance fit, the flange portion 411 can be acted on by the spring force of the first spring 330, so that the cylinder portion 412 is inside the first mounting hole 101.

[0036] The end of the cylinder portion 412 away from the flange portion 411 abuts against the snap spring 340. The snap spring 340 is an elastic element, which provides an axial limiting force for the first sleeve 410. When the first sleeve 410 slides on the screw portion 320, the snap spring 340 can effectively block the end of the cylinder portion 412 to prevent the cylinder portion 412 from falling off the screw portion 320. This abutting relationship enables the first sleeve 410 to always remain within the set axial position range during operation, ensuring the normal working state of the adjusting part 400.

[0037] The two ends of the first spring 330 abut against the nut portion 310 and the flange portion 411 respectively, and can generate an elastic force between the nut portion 310 and the flange portion 411, thereby realizing the elastic adjustment function. When the nut portion 310 is subjected to an axial displacement due to external force, the first spring 330 can generate a corresponding elastic force according to its elastic properties to buffer and compensate the displacement of the nut portion 310, and the corresponding force can be applied to the first connecting piece 10 through the first sleeve 410. This elastic adjustment function can effectively absorb and alleviate the impact of external force on the adjusting part 400, protect the internal components of the adjusting part 400 from damage, and prolong the service life of the adjusting part 400. At the same time, the elastic force of the first spring 330 can also keep the nut portion 310 and the flange portion 411 in close abutment, ensuring the good stability and reliability of the adjusting part 400 during operation.

[0038] In some embodiments, the length of the cylinder portion 412 is greater than the thickness of the first connecting piece 10, so that the end of the cylinder portion 412 away from the flange portion 411 can be inserted out of the first mounting hole 101 of the first connecting piece 10 to abut against the snap spring 340, facilitating the fixation of the axial position of the first connecting piece 10.

[0039] In actual installation, the screw rod part 320 of the screw 300 can be first passed through the first spring 330 and the first sleeve 410, and then passed through the first mounting hole 101 of the first connecting member 10 (for example, the heat sink 100) together, the first spring 330 is located at an intermediate position above the nut part 310 and the first sleeve 410, one end of the barrel part 412 of the first sleeve 410 is provided with a flange part 411, the first spring 330 can be in effective contact with the flange part 411 during movement, the barrel part 412 can pass through the first mounting hole 101, and since the height of the barrel part 412 is greater than the depth of the first mounting hole 101, in this way, the screw 300 can move up and down in the height direction, and the end of the screw rod part 320 away from the nut part 310 can automatically contact the second connecting member 20 (for example, the back plate 230 of the video card module 200), and the screw 300 does not need to be pressed hard before locking. Finally, in order to fix the screw 300 and the first sleeve 410, a clamping spring 340 is installed at the corresponding position of the screw rod part 320, and at the same time, in order to avoid the shaking of the whole structure, the first spring 330 is in a preliminary pre-pressed state.

[0040] In the initial state, the heat sink 100 needs to be placed on the video card module 200, the first spring 330 is in a preliminary pre-pressed state, the screw 300 is at a certain distance from the back plate 230 of the video card module 200, the distance value is the thickness value of the pre-pressed heat conduction material layer 240 (not shown in the figure), the lower surface of the flange part 411 of the first sleeve 410 is in contact with the first mounting hole 101 of the heat sink 100, as shown in Figure 4 (a); when the whole heat sink 100 is pre-pressed, the heat conduction material layer 240 between the heat sink 100 and the video card module 200 is compressed, therefore, under the condition that the position of the video card module 200 does not change, the heat sink 100 (for example, the heat sink 100) also moves downward by a certain distance, the distance value is the thickness value of the pre-pressed heat conduction material, the first spring 330 is in a preliminary pre-pressed state, through the above method, the screw 300 can be in contact with the back plate 230 of the video card module 200 without pressing the screw 300, the lower surface of the flange part 411 of the first sleeve 410 is in contact with the first mounting hole 101 of the heat sink 100, as shown in Figure 4 (b); when the heat sink 100 is locked, the heat conduction material layer 240 between the heat sink 100 and the video card module 200 is still in a compressed state, the positions of the heat sink 100 and the first sleeve 410 remain unchanged, the lower surface of the flange part 411 of the first sleeve 410 is in contact with the first mounting hole 101 of the heat sink 100, therefore, under the condition that the position of the video card module 200 does not change, the first spring 330 is further compressed, the screw 300 penetrates into the second mounting hole 201 of the back plate 230 of the video card module 200, and the heat sink 100 is locked, as shown in Figure 4 (c).

[0041] like Figure 5 As shown, in some other embodiments, the adjusting member 400 may further include a second sleeve 420 and a first elastic member 430. The second sleeve 420 is slidably fitted onto the screw portion 320 and includes a receiving cavity with an opening facing the first connecting member 10. One end of the first elastic member 430 abuts against the first connecting member 10, and the other end passes through the opening into the receiving cavity and abuts against the inner bottom surface of the receiving cavity. The two ends of the first spring 330 abut against the nut portion 310 and the outer bottom surface of the second sleeve 420, respectively.

[0042] Optionally, the first elastic element 430 can be configured as a second spring, which is sleeved on the screw portion 320. In the initial state, the length of the second spring is greater than the depth of the receiving cavity. Therefore, after installation, due to the supporting effect of the second spring, there is a certain gap between the lower surface of the second sleeve 420 and the upper surface of the radiator 100, which is a non-contact state.

[0043] Optionally, the elastic force of the second spring is less than that of the first spring 330. When the screw 300 is subjected to downward pressure, both the first spring 330 and the second spring are compressed, reducing their length. Since the elastic force of the second spring is less than that of the first spring 330, the second spring is first compressed to a depth equal to the accommodating cavity of the second sleeve 420, causing the lower surface of the second sleeve 420 to abut against the heatsink 100. This transfers at least a portion of the pressure from the first spring 330 to the heatsink 100, preventing the downward force on the screw 300 from directly acting on the backplate 230 of the graphics card module 200, thus protecting the threads of the screw shank 320.

[0044] Wherein, the screw 300 is first threaded through the first spring 330, the second sleeve 420 and the second elastic member 440, and then threaded through the first mounting hole 101 of the heat sink 100, the first spring 330 is located at an intermediate position above the screw cap portion 310 of the screw 300 and the second sleeve 420, the second spring is located at an intermediate position between the inner bottom surface of the accommodating cavity of the second sleeve 420 and the upper plane of the heat sink 100, the second sleeve 420 comprises an accommodating cavity, the lower end of the accommodating cavity forms an opening, and the other end has a through hole for the threaded rod portion 320 of the screw 300 to pass through, facilitating the arrangement of the screw 300 and the second spring, the depth of the accommodating cavity of the second sleeve 420 is less than the height of the second spring in the initial state, and the elastic force value of the first spring 330 is greater than that of the second spring. The purpose of the second sleeve 420 is to enable the second spring to resist the first spring 330 with greater elastic force and unchanged height after a certain amount of compression, and finally, in order to fix the screw 300, the first spring 330, the second sleeve 420 and the second spring, the threaded rod portion 320 of the screw 300 is located to be fixed by the clamping spring 340, and at the same time, in order to avoid the shaking of the entire spring screw structure and the second sleeve 420 thereof, the second spring is in a preliminary pre-pressed state.

[0045] When the first connecting member 10 is the heat sink 100 and the second connecting member 20 is the video card module 200, in the initial state, the heat sink 100 needs to be placed on the video card module 200, the first spring 330 is in a preliminary pre-pressed state, the second spring is in a preliminary pre-pressed state, the screw 300 is at a certain distance from the back plate 230 of the video card module 200, and the lower surface of the second sleeve 420 is at a certain distance from the upper plane of the first mounting hole 101 of the heat sink 100, and the distance value is the pre-pressed thickness value of the heat conduction material layer 240, such as Figure 5 (a) shown; when the heat sink 100 is initially locked, the first spring 330 is in a further compressed state and reaches an extreme compression state, the second spring is in a further compressed state, the positions of the heat sink 100 (for example, the heat sink 100) and the second sleeve 420 remain unchanged, and through the above method, only the second spring needs to be in the extreme compression state, so that the screw 300 is in contact with the back plate 230, and the lower surface of the second sleeve 420 is in contact with the upper plane of the first mounting hole 101 of the heat sink 100, such as Figure 5 (b) shown; after the heat sink 100 is locked, the heat conduction material layer 240 between the heat sink 100 and the video card module 200 is still in a compressed state, the first spring 330 is in a complete state, the second spring is in a preliminary further pre-pressed state, the positions of the heat sink 100 and the second sleeve 420 remain unchanged, the lower surface of the second sleeve 420 is in contact with the upper plane of the first mounting hole 101 of the heat sink 100, and therefore, under the condition that the position of the video card module 200 remains unchanged, the screw 300 penetrates into the second mounting hole 201 of the back plate 230 of the video card module 200, and the heat sink 100 is locked, such asFigure 5 (c) is shown.

[0046] It should be noted that the first elastic member 430 can also be a structure such as a spring, elastic rubber, etc., which can meet the compression and reset functions described above.

[0047] As shown in some embodiments, the adjusting member 400 further includes a first elastic member 430, which is located between the first connecting member 10 and the screw cap portion 310, and one end of the first elastic member 430 abuts against the first connecting member 10, and the other end abuts against the first spring 330 away from the screw cap portion 310. Figure 6 As shown in yet some embodiments, the adjusting member 400 further includes a second elastic member 440, which is located between the first connecting member 10 and the screw cap portion 310, and one end of the second elastic member 440 abuts against the first connecting member 10, and the other end abuts against the first spring 330 away from the screw cap portion 310. The second elastic member 440 includes but is not limited to a variable compression member, which can be made of a variable compression material.

[0048] The variable compression material generally refers to a material that can change its volume or shape significantly when subjected to external force, and its compression performance can be linear or nonlinear. For example, compressible foam material, super-elastic material (such as sponge rubber), etc. Among them, some variable compression materials also have nonlinear elastic properties, such as variable pitch compression springs, which have a non-uniform pitch design that causes them to produce nonlinear elastic deformation when stressed, suitable for complex stress environments. In addition, 3D printed super-elastic foam materials (such as TPU-based foam) can quickly recover to their original shape under a compression strain of up to 90%, exhibiting excellent super-elastic properties.

[0049] In order to enable the first spring 330 to transmit the pressure to the first connecting member 10 (the heat sink 100) after being compressed to a certain length, in some embodiments, the compression amount of the second elastic member 440 is less than the compression amount of the first spring 330. Because the compression amount of the second elastic member 440 is less than that of the first spring 330, as the screw 300 is stressed, the first spring 330 is stressed and pressed downward and acts on the second elastic member 440, which is also compressed together. When the second elastic member 440 is compressed to the limit position, its length no longer changes, and the stress of the first spring 330 is transmitted to the heat sink 100 through the second elastic member 440, avoiding the stress of the screw 300 from being completely applied to the back plate 230 of the graphics card module 200, thereby protecting the threads of the screw rod portion 320 of the screw 300.

[0050] In the actual installation, first, the screw 300 is passed through the spring and the second elastic member 440, and then passed through the first mounting hole 101 of the heat sink 100 together, the first spring 330 is located between the nut part 310 of the screw 300 and the second elastic member 440, in order to fix the screw 300 and the first elastic body, the snap spring 340 is installed on the screw rod part 320 of the screw 300, at the same time, in order to avoid the shaking of the whole structure, the first spring 330 and the second elastic member 440 are in the preliminary pre-pressing state, for example, the compression stroke of the second elastic member 440 is the sum of the compression amount when the screw 300 is assembled and the pre-pressing amount after the heat sink 100 is pre-pressed.

[0051] In the initial state, the heat sink 100 needs to be placed on the video card module 200, the first spring 330 is in the preliminary pre-pressing state, the second elastic member 440 is in the preliminary pre-pressing state, and the screw 300 has a certain distance from the back plate 230 of the video card module 200, the distance value is the thickness value of the heat-conducting material layer 240 between the chip 221 of the video card module 200 and the heat sink 100 being pre-pressed, the lower surface of the second elastic member 440 is in contact with the upper plane of the first mounting hole 101 of the heat sink 100, as shown in Figure 6 (a); when the whole heat sink 100 is preliminarily locked, the first spring 330 is in the further compression state, the second elastic member 440 is in the further compression and reaches the limit compression state, the screw rod part 320 of the screw 300 is in contact with the second mounting hole 201 of the back plate 230, the lower surface of the second elastic member 440 is in contact with the upper plane of the first mounting hole 101 of the heat sink 100, as shown in Figure 6 (b); when the heat sink 100 is locked, the position of the heat sink 100 and the second elastic member 440 remains unchanged, the lower surface of the second elastic member 440 is in contact with the upper plane of the first mounting hole 101 of the heat sink 100, therefore, the first spring 330 is further compressed under the condition that the position of the video card module 200 remains unchanged, the screw rod part 320 of the screw 300 is deeply inserted into the second mounting hole 201 (thread hole) of the back plate 230, and the heat sink 100 is locked, as shown in Figure 6 (c).

[0052] As shown in Figure 7As shown, in yet some embodiments of the present disclosure, the adjusting member 400 comprises a third spring 450, which is located between the snap ring 340 and the first connecting member 10, and the two ends of the third spring 450 abut against the snap ring 340 and the first connecting member 10 respectively; the two ends of the first spring 330 abut against the nut part 310 and the first connecting member 10 respectively. Wherein, the first spring 330 and the third spring 450 are located at opposite sides of the first connecting member 10 (the heat sink 100), wherein the two ends of the first spring 330 abut against the nut part 310 and the upper surface of the first connecting member 10 respectively, and the two ends of the third spring 450 abut against the snap ring 340 and the lower surface of the first connecting member 10 respectively. Through the cooperation of the first spring 330 and the third spring 450, when the heat-conducting material block layer between the heat sink 100 and the video card module 200 is compressed, the third spring 450 is further stressed, and the first spring 330 rebounds a certain distance, thereby avoiding the excessive stress on the screw 300 and causing the extrusion with the second mounting hole 201.

[0053] First, the screw 300 passes through the first spring 330, and then passes through the first mounting hole 101 of the heat sink 100 and the third spring 450 together. The first spring 330 is located between the nut part 310 and the upper surface of the heat sink 100, and the third spring 450 is located between the lower surface of the heat sink 100 and the upper surface of the snap ring 340. The screw 300 can move up and down in the height direction, and the screw rod part 320 of the screw 300 will contact the back plate 230. Before locking, the screw 300 does not need to be pressed with great force. Finally, in order to fix the screw 300 and the first spring 330 and the third spring 450, the snap ring 340 is installed at the position of the screw rod part 320 of the screw 300 and between the heat sink 100 and the back plate 230 of the video card module 200. At the same time, in order to avoid the shaking of the whole structure, the first spring 330 and the third spring 450 are in a preliminary pre-pressed state.

[0054] In the initial state, the heat sink 100 needs to be placed on the video card module 200, the first spring 330 is in a preliminary pre-pressed state, and the third spring 450 is in a preliminary pre-pressed state. Under the action of the third spring 450, the screw 300 will preliminarily contact the back plate 230 of the video card module 200, as shown in Figure 7 (a). When the whole heat sink 100 is pre-pressed, the heat-conducting material layer 240 between the heat sink 100 and the video card module 200 will be compressed. Therefore, under the condition that the position of the video card module 200 does not change, the heat sink 100 will move downward by a certain distance, which is the thickness value of the pre-pressed heat-conducting material layer 240. The first spring 330 is in a rebound state, the third spring 450 is in a further compressed and limit compressed state, and the screw 300 still contacts the back plate 230, as shown in Figure 7(b) shown; when the radiator 100 is locked, the heat-conducting material layer 240 between the radiator 100 and the graphics card module 200 is still in a compressed state, and the position of the radiator 100 remains unchanged, so that the first spring 330 is further compressed, the third spring 450 is in a rebound state, and the screw 300 extends into the second mounting hole 201 of the back plate 230, the radiator 100 is locked, as shown in Figure 7 (c) shown.

[0055] As shown in Figures 1 to 3 , according to the second aspect of the present disclosure, a graphics card device 1 is provided, which comprises a radiator 100, a graphics card module 200, and the spring screw connection structure described above; wherein the radiator 100 forms a first connecting piece 10; the graphics card module 200 forms a second connecting piece 20, and the spring screw connection structure is used to connect the radiator 100 and the graphics card module 200. Therefore, the spring screw connection structure can connect the graphics card module 200 and the radiator 100, and can solve the problem of thread damage caused by the need to press hard when locking the screw 300 and the thread interference between the spring screw and the second mounting hole 201 (thread hole) of the graphics card module 200 when pre-pressing the heat-conducting material layer 240 during the process of fixed connection.

[0056] Wherein, the graphics card device 1 can comprise an upper cover plate 210, a circuit board 220 with a chip 221, and a back plate 230 with a second mounting hole 201; the upper cover plate 210 is provided with a relief hole for avoiding the chip 221; the radiator 100 is provided with a heat exchange boss 110 for cooling the chip 221; the screw 300 is connected into the second mounting hole 201 of the back plate 230 after sequentially passing through the first mounting hole 101 of the radiator 100, the upper cover plate 210, and the circuit board 220; the heat exchange boss 110 and the chip 221 are provided with a heat-conducting material layer 240 therebetween.

[0057] As shown in Figure 2 and Figure 3 , wherein the radiator 100 can be a water-cooled plate, which can be provided with a first mounting hole 101 for the screw 300 to pass through, and the upper cover plate 210 is formed with a relief hole for accommodating the heat exchange boss 110 on the lower surface of the radiator 100, which is in contact with the chip 221 on the circuit board 220 for heat dissipation of the chip 221. The graphics card module 200 further comprises a back plate 230, which is formed with a second mounting hole 201 (thread hole) for connection of the screw 300, so that the graphics card device 1 comprises the water-cooled plate, the upper cover plate 210, the circuit board 220 with the chip 221, and the back plate 230 arranged in sequence from top to bottom, and is fixedly connected through the screw 300, the first spring 330, the adjusting piece 400, and the snap spring 340.

[0058] It should be noted that, in order to better take away the heat of the chip 221, a heat-conducting material layer 240 can be arranged between the chip 221 and the heat exchange boss 110, so that the heat-conducting material layer 240 can be closely attached to the heat exchange boss 110 and the chip 221 respectively, and therefore, the fixed connection is achieved through the spring nail screw connection structure, and the pre-tightening is achieved through the cooperation of the first spring 330 and the adjusting piece 400.

[0059] It can be understood that the screw 300, the first spring 330, the adjusting piece 400 and the snap spring 340 can be prearranged on the heat sink 100 (water cooling plate), and can be multiple groups, each group corresponding to being arranged in a first mounting hole 101. The heat exchange boss 110 on the water cooling plate is convenient to attach to the chip 221 on the circuit board 220, and the water cooling plate can have four first mounting holes 101 around the periphery, the screw 300 is sleeved with the first spring 330 and then passes through the first mounting holes 101 around the periphery of the water cooling plate, in order to prevent the screw 300 from being ejected by the first spring 330, a snap spring 340 is arranged on the screw rod part 320 of the screw 300, at the same time, the whole screw 300 is prevented from shaking, so the first spring 330 has a certain pre-pressing amount, the water cooling plate has a flow channel inside, which is connected with the peripheral cooling water channel through the water cooling plate connector 120, when the heat sink 100 is locked, the screw 300 passes through the upper cover plate 210 and the circuit board 220, and finally is screwed into contact with the threaded hole on the back plate 230, so that the heat sink 100 is locked.

[0060] According to a third aspect of the present disclosure, an electronic device is also provided, which comprises the graphics card device 1 described above, and therefore, the electronic device also has all the advantages of the graphics card device 1 described above, which will not be repeated here.

[0061] It should be noted that the electronic device includes but is not limited to a desktop computer, a notebook computer, an external graphics card dock, a host, a workstation, a data center device, etc.

[0062] The preferred embodiments of the present disclosure are described in detail above with reference to the drawings, but the present disclosure is not limited to the specific details in the above-described embodiments, and various simple modifications can be made to the technical solutions of the present disclosure within the technical concept of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

[0063] In addition, it should be noted that each specific technical feature described in the above specific embodiments can be combined in any appropriate manner without contradiction, and in order to avoid unnecessary repetition, various possible combinations will not be described again in the present disclosure.

[0064] In addition, various different embodiments of the present disclosure can also be combined in any manner, as long as they do not deviate from the idea of the present disclosure, and they should also be considered as disclosed in the present disclosure.

Claims

1. A spring screw connection structure, characterized in that, include: The first connector includes a first mounting hole; A screw, comprising a nut portion and a shank portion, wherein the shank portion passes through the first mounting hole and is used to connect with the second mounting hole of the second connector; A first spring is sleeved on the screw portion and located between the nut portion and the first connecting member; A snap ring, which engages with the screw portion, is located on the side of the first connector opposite to the nut portion; and An adjusting member connects the screw to the first connecting member, and is used to transmit part of the pressure to the first connecting member when the nut is compressed.

2. The spring screw connection structure according to claim 1, characterized in that, The adjusting component includes a first sleeve, which includes a cylindrical body and a flange located at one end of the cylindrical body. The cylindrical part is sleeved on the screw part and installed in the first mounting hole; The flange portion abuts against the side of the first connector near the nut portion, and the end of the cylindrical portion away from the flange portion abuts against the snap ring; The two ends of the first spring abut against the nut and the flange, respectively.

3. The spring screw connection structure according to claim 2, characterized in that, The length of the cylindrical part is greater than the thickness of the first connecting member.

4. The spring screw connection structure according to claim 1, characterized in that, The adjusting component includes a second sleeve and a first elastic element; The second sleeve is slidably sleeved on the screw portion, and the second sleeve includes a receiving cavity, the receiving cavity having an opening facing the first connecting member, one end of the first elastic member abutting against the first connecting member, and the other end passing through the opening into the receiving cavity and abutting against the inner bottom surface of the receiving cavity; The two ends of the first spring abut against the nut and the outer bottom surface of the second sleeve, respectively.

5. The spring screw connection structure according to claim 4, characterized in that, The first elastic element is a second spring, which is sleeved on the screw portion, and the initial length of the second spring is greater than the depth of the receiving cavity.

6. The spring screw connection structure according to claim 5, characterized in that, The elastic force of the first elastic element is less than the elastic force of the first spring.

7. The spring screw connection structure according to claim 1, characterized in that, The adjusting member includes a second elastic member, which is located between the first connecting member and the nut portion. One end of the second elastic member abuts against the first connecting member, and the other end abuts against the end of the first spring away from the nut portion.

8. The spring screw connection structure according to claim 7, characterized in that, The compression of the second elastic element is less than that of the first spring.

9. The spring screw connection structure according to claim 1, characterized in that, The adjusting component includes a third spring, which is located between the retaining ring and the first connecting member, and both ends of the third spring abut against the retaining ring and the first connecting member, respectively. The two ends of the first spring abut against the nut and the first connector, respectively.

10. The spring screw connection structure according to any one of claims 1-9, characterized in that, The first spring is in a pre-compressed state.

11. A graphics card device, characterized in that, Includes the spring screw connection structure as described in any one of claims 1-10; The first connector is a heat sink; the second connector is a graphics card module, and the spring screw connection structure is used to connect the heat sink and the graphics card module.

12. The graphics card device according to claim 11, characterized in that, The graphics card module includes a top cover, a circuit board with chips, and a back plate with a second mounting hole. The upper cover plate is provided with clearance holes to avoid the chip; The heat sink is provided with heat exchange protrusions for cooling the chip; The screw passes sequentially through the first mounting hole of the heat sink, the upper cover plate, and the circuit board, and is then connected to the second mounting hole of the back plate; A thermally conductive material layer is provided between the heat exchange boss and the chip.

13. An electronic device, characterized in that, Includes the graphics card device as described in claim 11 or 12.

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