Holding device and connector assembly

Abstract

The utility model discloses a kind of holding device and connector assembly, including a mounting seat, two fasteners and at least two guide posts, mounting seat is installed above circuit board, mounting seat has a bottom plate, bottom plate is equipped with a window and the two side plates of two sides in window, window is equipped with power connector;Two fasteners are set corresponding two side plates, and for being buckled with radiator left and right sides, every fastener has a connecting plate, connecting plate is stacked above corresponding side plate;At least two guide posts are set corresponding two side plates and two fasteners, every guide post has a positioning part and a guide part above positioning part, positioning part is riveted with corresponding side plate and connecting plate respectively, guide part is set above corresponding connecting plate with upward protruding.This utility model uses guide post to replace at least part rivet only having riveting connecting plate and side plate effect, rivet usage number can be saved or reduced, while also reduce the material cost of holding device.

Description

[Technical Field]

[0001] This utility model relates to a holding device and connector assembly, and more particularly to a holding device and connector assembly that can reduce material costs. [Background Technology]

[0002] Existing technology discloses a support frame for supporting a heat sink on a chip module pressed onto a connector. The support frame includes: an upper plate and two sets of elastic connectors symmetrically fixed to opposite sides of the upper plate. Each elastic connector includes: a spring, a washer, and a locking fastener. The spring is located between the upper plate and the heat sink, and is spaced a certain distance from the heat sink. The spring has a mating part in the middle, which is approximately parallel to the upper plate. The mating part has a through hole, and an elastic arm extends obliquely upward from both ends of the mating part. A fixed end extends downward from the elastic arm, and multiple pins pass downward through the fixed end to fix the spring to the upper plate. Two guide posts are symmetrically located on the diagonal of the upper plate relative to the heat sink. The guide posts are fixed to the upper plate by laser welding. The height of the guide posts is greater than the height of the locking fastener. When the heat sink is inserted downward into the upper plate, the guide posts pass upward into the heat sink before the locking fastener to guide the heat sink downward to engage and fix it with the locking fastener.

[0003] However, if the spring is long, a large number of pins are needed to ensure the stability of the connection between the spring and the upper plate, which leads to a higher material cost for the support frame.

[0004] Therefore, it is necessary to design a retaining device and a connector assembly having the retaining device to solve the above-mentioned technical problems. [Utility Model Content]

[0005] The purpose of this invention is to provide a retaining device that uses guide posts to replace at least part of the rivets to connect the mounting base and fasteners, and a connector assembly with the retaining device, so as to reduce the material cost of the retaining device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A holding device for mounting a circuit board and a heat sink, wherein an electrical connector is provided above the circuit board, comprising: a mounting base mounted above the circuit board, the mounting base having a base plate, the base plate having a window and two side plates located on the left and right sides of the window, the window accommodating the electrical connector; two fasteners corresponding to the two side plates and used for fastening to the left and right sides of the heat sink, each fastener having a connecting plate, the connecting plate being stacked above the corresponding side plate; at least two guide posts corresponding to the two side plates and the two fasteners, each guide post having a positioning part and a guide part located above the positioning part, the positioning part being riveted to the corresponding side plate and the connecting plate respectively, the guide part being upwardly protruding from the corresponding connecting plate.

[0008] Furthermore, for the side plate and the connecting plate on the same side of the window, each side plate is provided with at least one first connecting hole, and the connecting plate is provided with a second connecting hole that is vertically corresponding to each of the first connecting holes. The positioning part is interference-fitted with the vertically corresponding first connecting hole and the second connecting hole. The outer diameter of the guide part is smaller than the outer diameter of the positioning part, and the positioning part is recessed upward relative to the bottom surface of the side plate.

[0009] Furthermore, the holding device also includes at least two guide posts corresponding to the two side plates and the two fasteners. Each guide post has a fixing part and a guiding part located above the fixing part. The fixing part is riveted to the corresponding side plate and the connecting plate respectively. The guiding part protrudes upward from the corresponding connecting plate. The guiding part and the guiding part are used to guide different components.

[0010] Furthermore, the guide portion is positioned higher than the guide portion.

[0011] Furthermore, the fastener also has two fastening portions located above the corresponding connecting plate and spaced apart front to back. The fastening portions are used to fasten with the radiator. For the same side of the window, the guide post is located between the two fastening portions in the front-back direction.

[0012] Furthermore, the fastener has two protruding portions that extend outward from the front and rear ends of the window in the front-back direction, and each of the protruding portions is riveted to the base plate by a fastener.

[0013] Furthermore, the holding device also includes two heat-fused components and two nuts that mate with the two heat-fused components. Each heat-fused component has a main body and at least one heat-fused column extending from the main body. Each connecting plate has at least one through hole and at least one through-hole. The through hole and the through-hole penetrate the corresponding connecting plate vertically. Each side plate has a material receiving hole corresponding to each through hole. The material receiving hole penetrates the bottom plate vertically and surrounds the corresponding through hole, so that a portion of the bottom surface of the side plate is exposed downward in the material receiving hole. The main body limits at least a portion of one of the nuts above the connecting plate, and the nut is vertically corresponding to the through hole. The heat-fused column passes through the through hole and extends into the corresponding material receiving hole, so that the heat-fused column in the material receiving hole can be heat-fused to form a limiting structure at the bottom of the connecting plate.

[0014] Furthermore, the holding device also includes at least two limiting members and two torsion bars. The base plate is also provided with two end plates located on the front and rear sides of the window. At least two of the limiting members are provided corresponding to the two end plates. Each limiting member includes a locking fastener and a fastener that cooperate with each other. The mounting base has a locking plate located above each end plate and at least one connecting part connecting the end plate and the corresponding locking plate. The locking plate is spaced vertically from the end plate. The locking plate has at least one opening that extends vertically through the locking plate. The inner wall of the opening has at least one thread. The fastener is used for positioning. Regarding the end plate, the locking fastener has a limiting cap and a rod extending from the limiting cap. The rod has at least one external thread on its outer periphery. The locking fastener has a mounting hole that extends downward through the rod and has an internal thread. The limiting cap is positioned above the locking plate. The rod passes downward through the opening via a spiral. A portion of the fastener protrudes into the mounting hole and engages with the threaded rod. A portion of each torsion bar has an upper limit in the vertical direction between the corresponding locking plate and the end plate, and an upper limit in the front-back direction between at least one limiting member and the connecting portion.

[0015] This utility model also provides a connector assembly, including: a circuit board; an electrical connector disposed above the circuit board; a heat sink; a clamping member for carrying a chip module mounted above the electrical connector, the heat sink being mounted above the chip module, the clamping member having at least two first guide holes; a holding device, the holding device including: a mounting base mounted above the circuit board, the mounting base having a base plate, the base plate having a window and two side plates located on the left and right sides of the window, the window accommodating the electrical connector; two Each fastener is provided corresponding to two of the side plates and is used to fasten to the left and right sides of the radiator. Each fastener has a connecting plate, which is stacked on top of the corresponding side plate. At least two guide posts are provided corresponding to the two side plates and the two fasteners. Each guide post has a positioning part and a guide part located above the positioning part. The positioning part is riveted to the corresponding side plate and the connecting plate respectively. The guide part protrudes upward from the corresponding connecting plate and extends upward into the first guide hole for guiding the clamping member.

[0016] Furthermore, the holding device also includes at least two guide posts corresponding to the two side plates and the two fasteners. Each guide post has a fixing part and a guide part located above the fixing part. The fixing part is riveted to the corresponding side plate and the connecting plate respectively. The guide part protrudes upward from the corresponding connecting plate. Before the heat sink and the clamping member are installed, the guide part protrudes upward into a third guide hole provided by a dust cover covering the electrical connector to guide the dust cover.

[0017] Compared with the prior art, the retaining device and connector assembly designed in this utility model have the following advantages:

[0018] In this invention, each guide post has a positioning part and a guide part located above the positioning part. The positioning part is riveted to the corresponding side plate and the connecting plate respectively. The guide part protrudes upward from the corresponding connecting plate. The guide part of the guide post has a guiding function, and the positioning part of the guide post has the function of riveting fasteners and connecting plates. Therefore, the guide post can replace at least some of the rivets that originally only had the function of riveting the connecting plate and the side plate, which can save rivets or reduce the number of rivets used. This ensures the connection stability between the fastener and the mounting base, and also reduces the material cost of the holding device. [Attached Image Description]

[0019] Figure 1 This is an exploded perspective view of the connector assembly with a retaining device according to this utility model;

[0020] Figure 2 for Figure 1 A three-dimensional composite diagram;

[0021] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0022] Figure 4 for Figure 1 Exploded perspective view of the holding device of this utility model;

[0023] Figure 5 for Figure 4 A three-dimensional composite diagram;

[0024] Figure 6 for Figure 5 Schematic diagram of the cross-sectional structure at point BB;

[0025] Figure 7 for Figure 6 A magnified view of a portion of point C in the middle;

[0026] Figure 8 for Figure 1 A three-dimensional assembly diagram of the holding device of this utility model;

[0027] Figure 9 for Figure 8 Schematic diagram of the cross-sectional structure at point DD;

[0028] Figure 10 for Figure 9 A magnified view of a portion of point F in the middle;

[0029] Figure 11 for Figure 8 A schematic diagram of a partial cross-sectional structure at the EE section;

[0030] Figure 12 An exploded perspective view of the holding device of this utility model with a dust cover installed;

[0031] Figure 13 for Figure 12 A three-dimensional composite diagram.

[0032] Explanation of reference numerals in the accompanying drawings for the specific implementation methods:

[0033]

[0034]

Detailed Implementation Methods

[0035] To make the objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0036] In the description of this utility model, it should be noted that the terms "upper", "lower", "horizontal", "width", "top", "bottom", "vertical", "inner", "outer", "middle", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the position or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixation," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. It should be noted that when an element is referred to as "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intervening element present.

[0038] Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0039] For ease of understanding, we define the Z-axis extension direction as the up-down direction (where the positive Z-axis direction is upward), the Y-axis extension direction as the left-right direction (where the positive Y-axis direction is to the right), and the X-axis extension direction as the front-back direction (where the positive X-axis direction is backward).

[0040] like Figures 1 to 3 As shown, the connector assembly of this utility model includes a circuit board 100, an electrical connector 200, a heat sink 300, a clamping member 400, a chip module 500, a holding device 600, and a backplate 700. The electrical connector 200 is disposed above the circuit board 100 and electrically connected to the circuit board 100. The clamping member 400 is located above the circuit board 100 and is used to carry the chip module 500 disposed on the electrical connector 200. The holding device 600 is located above the circuit board 100. The circuit board 100 is surrounded by the electrical connector 200. The retaining device 600 is locked to the heat sink 300. The back plate 700 is located below the circuit board 100, and the retaining device 600 and the back plate 700 located below the circuit board 100 are fixed to each other. The chip module 500 abuts against the heat sink 300 upwards and is electrically connected to the electrical connector 200 downwards, and the chip module 500 is electrically connected to the circuit board 100 through the electrical connector 200.

[0041] like Figure 1 As shown, the electrical connector 200 includes an insulating body (not shown) and a plurality of conductive terminals (not shown). The insulating body houses the plurality of conductive terminals. The upper part of the conductive terminals abuts against the chip module 500, and the lower part of the conductive terminals is electrically connected to the circuit board 100.

[0042] like Figures 1 to 3 As shown, the heat sink 300 is installed on the holding device 600. The heat sink 300 includes a heat sink base plate 301, a plurality of heat sink fins 302 protruding above the heat sink base plate 301, and a plurality of fastening structures 304 disposed on the left and right sides of the heat sink base plate 301. In this embodiment, there are four fastening structures 304, with two on each of the left and right sides of the heat sink base plate 301. Each fastening structure 304 has a pre-locking rod 3041 that protrudes outward and downward from the heat sink base plate 301 in the left and right direction.

[0043] like Figure 1 , Figure 4 as well as Figure 5As shown, the holding device 600 includes a mounting base 1, two fasteners 2, at least two guide posts 3, at least two guide columns 4, multiple fixing parts 5, at least two thermoplastic parts 6, at least two nuts 7, at least two screws 8, at least two limiting parts 9, two torsion bars 10, and four floating bolts 20. In this embodiment, the mounting base 1, fasteners 2, guide posts 3, guide columns 4, fixing parts 5, nuts 7, screws 8, limiting parts 9, torsion bars 10, and floating bolts 20 are all made of metal sheet, the thermoplastic parts 6 are plastic parts, the thermoplastic parts 6 are used in conjunction with the nuts 7 and screws 8, there are three guide posts 3, four guide columns 4, two thermoplastic parts 6, two nuts 7, and two screws 8, four fixing parts 5, and six limiting parts 9. Of course, in other embodiments, the number of each component can be adjusted according to requirements.

[0044] like Figure 1 and Figure 4 As shown, the mounting base 1 is mounted above the circuit board 100, and the mounting base 1 has a base plate 11. The base plate 11 is a flat plate structure. The base plate 11 is provided with a window 111, two side plates 112 located on the left and right sides of the window 111, and two end plates 113 located on the front and rear sides of the window 111. The window 111 extends vertically through the base plate 11 to accommodate the electrical connector 200. That is, the base plate 11 surrounds the electrical connector 200. The end plates 113 are integrally connected to the two side plates 112. In this way, the two end plates 113 and the two side plates 112 are connected and surround to form the window 111.

[0045] like Figure 4As shown, each side plate 112 is provided with at least one first connecting hole 1121, at least one receiving hole 1122, at least one through hole 1123, and at least one first mating hole 1124. In this embodiment, each side plate 112 is provided with two first mating holes 1124 spaced apart front to back, two receiving holes 1122 spaced apart front to back, and one through hole 1123. The two first mating holes 1124 are located on the front and rear sides of the through hole 1123, and the two receiving holes 1122 are located on the front and rear sides of the through hole 1123. The two receiving holes 1122 are located between the two first mating holes 1124 in the front-rear direction. One side plate 112 is provided with two first connecting holes 1121 spaced apart front to back. The first connecting hole 1121 is located on the front and rear sides of the two material receiving holes 1122 and between the two first mating holes 1124. Another side plate 112 is provided with a first connecting hole 1121. The first connecting hole 1121 is located between the corresponding front and rear adjacent first mating holes 1124 and material receiving holes 1122. The first connecting hole 1121, the material receiving hole 1122, the through hole 1123 and the first mating hole 1124 are all circular hole structures. In other embodiments, the required number of first connecting holes 1121, material receiving holes 1122, through holes 1123 and first mating holes 1124, as well as their positions, can be set according to requirements.

[0046] like Figure 4 , Figure 8 and Figure 11 As shown, the mounting base 1 includes a locking plate 114 located above each of the end plates 113 and at least one connecting portion 115 connecting the end plates 113 and the corresponding locking plates 114. Each locking plate 114 is integrally connected to the base plate 11 through at least one connecting portion 115, or in other words, the side plate 112, the connecting portion 115, and the end plate 113 are connected to form an integral structure. In this embodiment, the locking plate 114 is also a flat plate structure, arranged parallel to the corresponding end plate 113. Each locking plate 114 is integrally connected to the base plate 11 through four connecting portions 115 spaced apart on the left and right sides. One end of each connecting portion 115 is connected to one of the front or rear sides of the window 111.

[0047] like Figure 4 and Figure 11 As shown, the locking plate 114 is provided with at least one opening 1141, the opening 1141 extends vertically through the locking plate 114, and the inner wall of the opening 1141 is provided with at least one thread 1141a. In this embodiment, the locking plate 114 is provided with three openings 1141 spaced apart from left to right.

[0048] like Figure 4 and Figure 11 As shown, the mounting base 1 also includes two side guards 116 connecting the left and right sides of the base plate 11 and two end guards 117 connecting the front and rear ends of the base plate 11. Each side guard 116 is formed by bending upward from the outer edge of one of the side guards 112 away from the window 111, and each end guard 117 is formed by bending upward from the outer edge of one of the end guards 113 away from the window 111. The top of the end guard 117 is set higher than the locking plate 114.

[0049] like Figure 1 , Figure 4 and Figure 7 As shown, the two fasteners 2 are provided on the two side plates 112 on the left and right sides of the window 111. The fasteners 2 are located above the corresponding side plates 112 and are used to fasten with the fastening structures 304 on the left and right sides of the radiator 300. Each fastener 2 has a connecting plate 21. The connecting plate 21 is a flat plate structure. The connecting plate 21 is stacked on top of the corresponding side plate 112. The thickness of the connecting plate 21 in the vertical direction is less than the thickness of the side plate 112 in the vertical direction.

[0050] like Figure 4 , Figure 9 and Figure 10As shown, each of the connecting plates 21 is provided with at least one second connecting hole 211, at least one through hole 212, at least one through hole 213, and at least one second mating hole 214. The second connecting hole 211, the through hole 212, the through hole 213, and the second mating hole 214 all penetrate the corresponding connecting plate 21 vertically. The second connecting hole 211 is vertically corresponding to the first connecting hole 1121, and the first connecting hole 1121 is arranged around the corresponding second connecting hole 211, so that a portion of the bottom surface of the side plate 112 is exposed downwards through the first connecting hole 1121. The through hole 212 is vertically corresponding to the material receiving hole 1122, and the material receiving hole 1122 is arranged around the corresponding through hole 212, so that a portion of the bottom surface of the side plate 112 is exposed downwards through the material receiving hole 1122. The diameter of the material receiving hole 1122 is larger than the diameter of the through hole 212. The through hole 213 and the through hole 1123 are arranged vertically and vertically, with the through hole 213 surrounding the corresponding through hole 1123, so that a portion of the top surface of the side plate 112 is exposed upward through the through hole 213. The second mating hole 214 and the first mating hole 1124 are arranged vertically and vertically, with the first mating hole 1124 surrounding the corresponding second mating hole 214, so that a portion of the bottom surface of the side plate 112 is exposed downward through the first mating hole 1124. In this embodiment, the number of the second connecting holes 211 is the same as the number of the first connecting holes 1121, and two are also provided. The second connecting holes 211, the through hole 212, the through hole 213, and the second mating holes 214 are also circular hole structures.

[0051] like Figure 4 and Figure 5 As shown, each of the fasteners 2 has two protruding portions 24 that protrude from the front and rear ends of the window 111 in the front-rear direction. Each of the protruding portions 24 is riveted to the base plate 11 by a fixing member 5. The two protruding portions 24 are provided at the front and rear ends of the corresponding connecting plate 21, and the protruding portions 24 are fixedly connected to the base plate 11 by the fixing member 5.

[0052] like Figure 2 , Figure 3 and Figure 4As shown, each of the fasteners 2 also has two fastening portions 22 located above the corresponding connecting plate 21 and spaced apart front and back, and a connecting plate 23 connected to the connecting plate 21. The connecting plate 23 is formed by bending upward from the outer edge of the corresponding connecting plate 21 away from the window 111. The connecting plate 23 is located inside the corresponding side guard plate 116. The top front and rear ends of the connecting plate 23 respectively protrude outward relative to the corresponding side guard plate 116 with a fastening portion 22. The pre-locking rod 3041 is held below the fastening portion 22, thereby realizing the pre-locking of the radiator 300 by the fastening portion 22.

[0053] like Figure 4 and Figure 5 As shown, the three guide posts 3 are provided corresponding to the two side plates 112 and the two connecting plates 21. Two of the guide posts 3 are provided on one side of the left and right sides of the window 111 and are spaced apart in the front and back direction. The other guide post 3 is provided on the other side of the left and right sides of the window 111. The guide posts 3 rivet the corresponding side plates 112 and connecting plates 21.

[0054] like Figure 4 , Figure 6 and Figure 7 As shown, each guide post 3 has a positioning part 31 and a guide part 32 located above the positioning part 31. The horizontal cross-section of both the guide part 32 and the positioning part 31 is circular, and they are coaxially arranged. The positioning part 31 is riveted to the corresponding side plate 112 and the connecting plate 21 respectively. The guide part 32 protrudes upward from the corresponding connecting plate 21. The outer diameter of the guide part 32 is defined as a first dimension D1, and the outer diameter of the positioning part 31 is defined as a second dimension D2. The first dimension D1 is smaller than the second dimension D2. The positioning part 31 is interference-fitted with the first connecting hole 1121 and the second connecting hole 211 arranged vertically. During the riveting process of the guide post 3 with the corresponding side plate 112 and the connecting plate 21, the guide part 32 first needs to pass through the corresponding first connecting hole 1121 and second connecting hole 211 until the positioning part 31 enters the first connecting hole 1121 and the second connecting hole 211. By making the outer diameter of the guide part 32 (i.e., the first dimension D1) smaller than the outer diameter of the positioning part 31 (i.e., the second dimension D2), interference between the guide part 32 and the hole walls of the first connecting hole 1121 and the second connecting hole 211 can be avoided when the guide part 32 passes through the first connecting hole 1121 and the second connecting hole 211. This avoids the guide part 32 rubbing against the hole walls of the first connecting hole 1121 and the second connecting hole 211 and generating burrs, thereby improving the production quality of the product.

[0055] like Figure 1 , Figure 6 and Figure 7 As shown, the positioning part 31 is recessed upward relative to the bottom surface of the side plate 112, that is, the positioning part 31 is completely housed within the space formed by the first connecting hole 1121 and the second connecting hole 211, so as to avoid the positioning part 31 protruding from the bottom surface of the side plate 112, thereby avoiding interference between the positioning part 31 and the circuit board 100 below the side plate 112, and ensuring that the circuit board 100 is installed flat. The recess distance H1 is defined as the distance by which the lower end face of the positioning part 31 is recessed relative to the bottom surface of the side plate 112. The value of the recess distance H1 ranges from 0mm to 3mm, which can ensure that the positioning part 31 has a riveting effect on the side plate 112 and the bottom plate 11, while avoiding interference between the positioning part 31 and the circuit board 100.

[0056] like Figure 1 , Figure 6 and Figure 7 As shown, four guide posts 4 are provided corresponding to two side plates 112 and two connecting plates 21. Two guide posts 4 are located on one side of the left and right sides of the window 111 and are spaced apart along the front-back direction. The other two guide posts 4 are located on the other side of the left and right sides of the window 111. The guide posts 4 rivet the corresponding side plates 112 and connecting plates 21. Each guide post 4 has a fixing part 41 and a guide part 42 located above the fixing part 41. The horizontal cross-section of both the guide part 42 and the fixing part 41 is circular and they are coaxially arranged. The fixing part 41 is riveted to the corresponding side plate 112 and connecting plate 21 respectively. The guide part 42 protrudes upward from the corresponding connecting plate 21. Specifically, the outer diameter of the guide part 42 is smaller than that of the connecting plate 21. The outer diameter of the fixing part 41 is specified. The fixing part 41 is interference-fitted with the first mating hole 1124 and the second mating hole 214, which are correspondingly arranged above and below. The fixing part 41 is recessed upward relative to the bottom surface of the side plate 112 to avoid the fixing part 41 protruding from the bottom surface of the side plate 112. This avoids interference between the fixing part 41 and the circuit board 100 below the side plate 112, thus ensuring that the circuit board 100 is installed flat. The recess distance H2 is defined as the distance by which the lower end face of the fixing part 41 is recessed relative to the bottom surface of the side plate 112. The value of the recess distance H2 ranges from 0mm to 3mm. This ensures that the fixing part 41 has a riveting effect on the side plate 112 and the bottom plate 11, while avoiding interference between the fixing part 41 and the circuit board 100.

[0057] like Figure 5 and Figure 6As shown, with the guide post 3 and guide post 4 already installed to rivet the fastener 2 and the base plate 11, on each of the left and right sides of the window 111, the guide post 3 is located between two fixing members 5. This eliminates the need for additional fixing members 5 in the middle of the connecting plate 21 and the side plate 112. Therefore, by utilizing the fixing members 5, the positioning post, and the guide post 4, the connection stability between the fastener 2 and the base plate 11 can be improved, while the number of fixing members 5 used is reduced. For the same side of the window 111, the guide post 3 is located between two fastening parts 22 in the front-to-back direction.

[0058] like Figure 4 , Figure 9 and Figure 10 As shown, two hot melt components 6 are provided corresponding to two connecting plates 21. Each hot melt component 6 has a main body 61 and at least one hot melt column 62 extending from the main body 61. In this embodiment, there are two hot melt columns 62, which are spaced apart from each other. The main body 61 is located above the corresponding connecting plate 21. The hot melt column 62 passes through the through hole 212 and extends into the corresponding material receiving hole 1122, which facilitates the hot melt column 62 in the material receiving hole 1122 to be hot melted to form a limiting structure at the bottom of the connecting plate 21. Compared with the traditional structure, which requires a chamfer to be provided on the through hole 212 for the limiting structure to be formed, the addition of the material receiving hole 1122 can eliminate the need to provide a chamfer structure on the through hole 212. Moreover, the material receiving hole 1122 can provide a larger material receiving space than the chamfer structure, which can ensure that the molten material generated by the hot melt column 62 after hot melting can be evenly distributed in the material receiving hole 1122 and form a stable limiting structure. Therefore, by adding the material receiving hole 1122 to the side plate 112, the limiting strength and structural reliability of the limiting structure are improved, thereby improving the connection stability between the hot melt part 6 and the connecting plate 21. Furthermore, the through hole 212 of the connecting plate 21 and the material receiving hole 1122 of the side plate 112 can be formed by conventional punching or through hole 212, reducing the complexity of processing the chamfered structure.

[0059] like Figure 10 and Figure 11As shown, before the hot-melt column 62 of the hot-melt component 6 is fixed to the connecting plate 21 by hot-melt, at least a portion of the nut 7 is positioned above the connecting plate 21 by the main body 61 of the hot-melt component 6. The nut 7 is vertically aligned with the corresponding through hole 213 and the corresponding through hole 1123. In this embodiment, a portion of the nut 7 is located above the connecting plate 21 and is blocked by the connecting plate 21. The other portion (i.e., the bottom) of the nut 7 is located in the through hole 213 but above the side plate 112. This allows the nut 7 to be positioned on the connecting plate 21 first, and then the corresponding hot-melt component 6 to be assembled from top to bottom. Next, the hot-melt column 62 is hot-melted, thus fixing the connecting plate 21 and the corresponding side plate 112. The screw 8, riveted to the back plate 700, passes sequentially from bottom to top through the circuit board 100, the corresponding through hole 1123, and the through hole 213 before being threadedly connected to the nut 7.

[0060] like Figure 4 and Figure 11 As shown, the two torsion bars 10 are respectively disposed at the front and rear ends of the mounting base 1. Each torsion bar 10 is approximately "U" shaped and is formed by bending a slender metal rod. A portion (i.e., the middle portion) of each torsion bar 10 extends in the left-right direction. The upper limit in the up-down direction is located between the locking plate 114 and the end plate 113 corresponding to the locking plate 114. The upper limit in the front-back direction is located between at least one limiting member 9 and the corresponding connecting portion 115. In this embodiment, a portion (i.e., the middle portion) of each torsion bar 10 has a curved portion (not labeled in the figure). The curved portion is arched towards the corresponding end guard plate 117. The upper limit in the front-back direction is located between the two limiting members 9 and the corresponding connecting portion 115. The curved portion is limited in the front-back direction by another limiting member 9 and the corresponding end guard plate 117.

[0061] like Figure 3 and Figure 4 As shown, each end of the torsion bar 10 is connected to a floating bolt 20. The floating bolt 20 extends vertically and is used to pass upward through the heat dissipation substrate 301 and is threadedly connected to the locking structure 303, thereby locking the heat sink 300 to the holding device 600.

[0062] like Figure 5 and Figure 11As shown, the six limiting members 9 are provided corresponding to the two locking plates 114 and the two end plates 113, that is, three limiting members 9 are distributed on both the front and rear sides of the window 111, and the limiting members 9 are used in conjunction with the opening 1141. Each limiting member 9 includes a locking member 91 and a fastener 92 that cooperate with each other.

[0063] like Figure 4 , Figure 8 and Figure 11 As shown, the locking device 91 has a limiting cap 911 and a rod portion 912 extending downward from the limiting cap 911. The rod portion 912 has at least one external thread on its outer periphery. The locking device 91 has a mounting hole 913 that penetrates downward through the rod portion 912 and has an internal thread. In this embodiment, the mounting hole 913 penetrates the entire locking device 91 vertically. The limiting cap 911 is positioned above the locking plate 114. The rod 912 spirals downward through the corresponding opening 1141, meaning that the external thread on the rod 912 can be screwed into the internal thread of the opening 1141 to allow the rod 912 to pass through the opening 1141. When the locking fastener 91 is subjected to external force and moves upward, the external thread on the rod 912 approaches the locking plate 114 and abuts against the thread on the inner wall of the opening 1141, thereby preventing the locking fastener 91 from detaching from the locking plate 114. The locking fastener 91 achieves anti-detachment by having at least one external thread on the outer circumference of the rod 912 engaging with at least one thread 1141a on the inner wall of the opening 1141. This anti-detachment mechanism eliminates the need for additional spring parts, reducing the number of parts (e.g., eliminating the need for springs), lowering material costs, simplifying the process, and reducing the assembly steps of riveting the springs. The locking fastener 91 can be directly screwed into the corresponding opening 1141.

[0064] like Figure 11 As shown, the fastener 92 is riveted and fixed to the back plate 700. The part of the fastener 92 that protrudes upward from the back plate 700 can pass through the circuit board 100 and the end plate 113 in sequence and then be threadedly connected to the mounting hole 913 of the corresponding locking fastener 91.

[0065] like Figure 1 and Figure 8As shown, the clamping member 400 is provided with at least two first guide holes 401 and at least two second guide holes 402. In this embodiment, the number of first guide holes 401 is the same as the number of guide posts 3, which is four. The number of second guide holes 402 is the same as the number of guide posts 4, which is three. Each guide part 32 passes through one of the first guide holes 401, providing pre-positioning and guiding for the clamping member 400 to be installed, thus improving the installation accuracy and convenience of the clamping member 400. Each guide part 42 passes through one of the second guide holes 402, also providing pre-positioning and guiding for the clamping member 400 to be installed, thus improving the installation accuracy and convenience of the clamping member 400. Thus, the guide part 32 and the guide part 42 are used to guide the same element (e.g., the clamping member 400). In other embodiments, the clamping member 400 may not have the second guide holes 402, and may only have the first guide holes 401 through which the guide posts 3 pass.

[0066] like Figure 1 , Figure 12 and Figure 13 As shown, the connector assembly also includes a dust cover 800. Before the heat sink 300 and the clamping member 400 are installed, the dust cover 800 is installed above the holding device 600. The dust cover 800 covers the holding device 600 to provide dust protection. Specifically, the dust cover 800 is provided with at least two third guide holes 801. In this embodiment, there are two third guide holes 801. The two third guide holes 801 allow one guide post 4 on each of the left and right sides of the window 111 to pass through. The guide parts 42 of the other two guide posts 4 are located outside the dust cover 800. When the dust cover 800 is installed, the guide parts 42 of the guide posts 4 are used to pass upward through the third guide holes 801. When the clamping member 400 is not provided with the second guide hole 402, the guide portion 32 and the guide portion 42 can be used as different elements. For example, the guide portion 42 is used to guide the clamping member 400, and the guide portion 32 is used to guide the dust cover 800. In other embodiments, the dust cover 800 can be provided with the same number of third guide holes 801 as the guide posts 4.

[0067] like Figure 6 and Figure 7As shown, the guide part 42 is positioned higher than the guide part 32. During the installation of the clamping member 400, the guide post 4 also provides initial positioning and auxiliary guidance during the assembly of the clamping member 400, reducing the need for separate multiple guide structures and lowering the number of components and assembly complexity. During assembly, the clamping member 400 is first initially positioned by the higher guide part 42, and then positioned by the guide part 32, ensuring smooth installation.

[0068] In summary, the present invention's retaining device and connector assembly having the retaining device have the following beneficial effects:

[0069] 1. By using the positioning part 31 of the guide post 3 to rivet the side plate 112 of the mounting base 1 and the connecting plate 21 of the fastener 2, and the guide post 3 is set above the positioning part 31, the guide post 3 has the function of fixing and connecting the mounting base 1 and the fastener 2, and also has the function of guiding. Therefore, the guide post 3 can replace the rivet that originally only had a riveting function, which can save rivets or reduce the amount of rivets used. This ensures the connection stability between the fastener 2 and the mounting base 1, and also reduces the material cost of the holding device 600.

[0070] 2. Regarding the side plate 112 and the connecting plate 21 on the same side of the window 111, at least one first connecting hole 1121 is provided on each side plate 112, and a second connecting hole 211 is provided on the connecting plate 21 corresponding vertically to each of the first connecting holes 1121. The positioning part 31 of the guide post 3 is press-fitted with the corresponding first connecting hole 1121 and second connecting hole 211, and the side plate 112 and the connecting plate 21 are riveted together by the positioning part 31. During the riveting process of the connecting plate 21, the guide part 32 first needs to pass through the first connecting hole 1121 and the second connecting hole 211 in sequence until the positioning part 31 enters the first connecting hole 1121 and the second connecting hole 211. By making the outer diameter of the guide part 32 smaller than the outer diameter of the positioning part 31, interference between the guide part 32 and the first connecting hole 1121 and the second connecting hole 211 can be avoided, thereby preventing burrs from being generated by friction between the guide part 32 and the hole walls of the first connecting hole 1121 and the second connecting hole 211, thus improving the production quality of the product.

[0071] 3. When the positioning part 31 is interference-fitted with the first connecting hole 1121 and the second connecting hole 211, the lower end face of the positioning part 31 is recessed upward relative to the bottom surface of the side plate 112 to avoid the positioning part 31 protruding from the bottom surface of the side plate 112. This can prevent the positioning part 31 from interfering with the circuit board 100 at the bottom of the side plate 112 and ensure that the circuit board 100 is installed flat.

[0072] 4. At least two guide posts 4 are provided corresponding to the two side plates 112 and the two fasteners 2, and each guide post 4 has a fixing part 41 and a guide part 42 located above the fixing part 41. The fixing part 41 is riveted to the corresponding side plate 112 and the connecting plate 21 respectively. The guide part 42 and the guide part 32 are both provided to protrude upward from the corresponding connecting plate 21. The guide part 32 and the guide part 42 are used to guide different components or the same components. The fixing part 41 of the guide post 4 further enhances the connection stability of the side plate 112 and the connecting plate 21.

[0073] 5. By making the guide part 42 higher than the guide part 32, the guide post 4 can also provide preliminary positioning and auxiliary guidance during the installation of the clamping member 400, reducing the need for setting up multiple guide structures separately, and reducing the number of parts and assembly complexity.

[0074] 6. Each of the fasteners 2 also has two fastening parts 22 located above the corresponding connecting plate 21 and spaced apart front and back. The two fastening parts 22 are used to connect the radiator 300. For the same side of the window 111, the guide post 3 is located between the two fastening parts 22 in the front and back direction. The front and back ends of the connecting plate 21 are provided with two protruding parts 24. The protruding parts 24 are fixedly connected to the base plate 11 by the fastener 5. The fastener 5, fastening parts 22 and guide post 3 are staggered in the front and back direction, so that the overall structure is more evenly stressed.

[0075] 7. To mount the two hot-melt components 6 onto the two connecting plates 21, each connecting plate 21 is provided with at least one through hole 212 and at least one through hole 213. Each hot-melt component 6 has a main body 61 and at least one hot-melt column 62 extending from the main body 61. The through hole 212 and the through hole 213 penetrate the corresponding connecting plate 21 vertically. Each side plate 112 is provided with a corresponding through hole 212. The material receiving hole 1122 allows the hot melt column 62 to pass through the through hole 212 and extend into the corresponding material receiving hole 1122, facilitating the hot melt column 62 in the material receiving hole 1122 to be hot melted to form a limiting structure at the bottom of the connecting plate 21. The added material receiving hole 1122 ensures that the material after the hot melt column 62 is hot melted can be evenly distributed and form a stable limiting structure, improving the limiting strength and reliability of the limiting structure, thereby improving the connection stability between the hot melt component 6 and the connecting plate 21.

[0076] 8. The base plate 11 is provided with two side plates 112 located on the left and right sides of the window 111, and two end plates 113 located on the front and rear sides of the window 111. Two limiting members 9 are correspondingly provided on the two end plates 113. Each limiting member 9 includes a locking fastener 91 and a fastener 92 that cooperate with each other. The mounting base 1 also has a locking plate 114 located above the end plates 113 of the base plate 11 and at least one connecting part 115 connecting the end plates 113 and the corresponding locking plates 114. The locking plates 114 and the corresponding end plates 113 are spaced vertically apart. The locking plates 114 are provided with at least one opening 1141, and the inner wall of the opening 1141 is provided with at least one thread 1141a. The rod portion 912 of the fastener 91 has at least one external thread on its outer periphery. The mounting hole 913 of the fastener 91 penetrates the rod portion 912 downward and has an internal thread. The limiting cap 911 is positioned above the locking plate 114. The rod portion 912 passes downward through the opening 1141 by a spiral. When the fastener 91 is subjected to an external force and moves upward, the external thread on the rod portion 912 approaches the locking plate 114 and abuts against the thread on the inner wall of the opening 1141, thereby preventing the fastener 92 from detaching upward from the locking plate 114. This achieves anti-detachment without the need for additional spring parts, reducing the number of parts (eliminating the spring), lowering material costs, simplifying the process, and reducing the assembly steps of spring riveting. The fastener 92 can be directly screwed into the opening 1141.

[0077] The above detailed description is only a description of the preferred embodiment of this utility model and is not intended to limit the patent scope of this utility model. Therefore, all equivalent technical changes made using the content of this invention's specification and illustrations are included within the patent scope of this invention.

Claims

1. A holding device for mounting a circuit board and a heat sink, wherein an electrical connector is disposed above the circuit board, characterized in that, include: A mounting base is installed above the circuit board. The mounting base has a base plate, the base plate has a window and two side plates located on the left and right sides of the window, and the window is for accommodating the electrical connector. Two fasteners are provided corresponding to the two side plates and are used to fasten to the left and right sides of the radiator. Each fastener has a connecting plate, which is stacked on top of the corresponding side plate. At least two guide posts are provided corresponding to the two side plates and the two fasteners. Each guide post has a positioning part and a guide part located above the positioning part. The positioning part is riveted to the corresponding side plate and the connecting plate respectively. The guide part protrudes upward from the corresponding connecting plate.

2. The holding device as claimed in claim 1, characterized in that, For the side plate and the connecting plate on the same side of the window, each side plate is provided with at least one first connecting hole, and the connecting plate is provided with a second connecting hole that is vertically corresponding to each of the first connecting holes. The positioning part is interference-fitted with the vertically corresponding first connecting hole and the second connecting hole. The outer diameter of the guide part is smaller than the outer diameter of the positioning part, and the positioning part is recessed upward relative to the bottom surface of the side plate.

3. The holding device as claimed in claim 1, characterized in that, It also includes at least two guide posts corresponding to the two side plates and the two fasteners. Each guide post has a fixing part and a guide part located above the fixing part. The fixing part is riveted to the corresponding side plate and the connecting plate respectively. The guide part protrudes upward from the corresponding connecting plate. The guide part and the guide part are used to guide different components or the same components.

4. The holding device as described in claim 3, characterized in that, The guide section is positioned higher than the guide section.

5. The holding device as claimed in claim 1, characterized in that, The fastener also has two fastening portions located above the corresponding connecting plate and spaced apart front to back. The fastening portions are used to fasten with the radiator. For the same side of the window, the guide post is located between the two fastening portions in the front-back direction.

6. The holding device as claimed in claim 1, characterized in that, The fastener has two protruding portions that extend from the front and rear ends of the window in the front-back direction, and each of the protruding portions is riveted to the base plate by a fastener.

7. The holding device as claimed in claim 1, characterized in that, It also includes two hot melt components and two nuts that mate with the two hot melt components. Each hot melt component has a main body and at least one hot melt column extending from the main body. Each connecting plate has at least one through hole and at least one through hole, both of which penetrate the corresponding connecting plate vertically. Each side plate has a material receiving hole corresponding to each through hole, which penetrates the bottom plate vertically and surrounds the corresponding through hole, such that a portion of the bottom surface of the side plate is exposed downwards in the material receiving hole. The main body limits at least a portion of one of the nuts above the connecting plate, and the nut is vertically corresponding to the through hole. The hot melt column passes through the through hole and extends into the corresponding material receiving hole, facilitating the hot melt column in the material receiving hole to be hot melted to form a limiting structure at the bottom of the connecting plate.

8. The holding device as claimed in claim 1, characterized in that, The base plate further includes at least two limiting members and two torsion bars. It also has two end plates located on the front and rear sides of the window. At least two limiting members are provided corresponding to the two end plates. Each limiting member includes a locking element and a fastener that cooperate with each other. The mounting base has a locking plate located above each end plate and at least one connecting portion connecting the end plate and the corresponding locking plate. The locking plate is spaced vertically from the end plate. The locking plate has at least one opening that extends vertically through the locking plate. The inner wall of the opening has at least one thread. The fastener is positioned on the end plate. The locking device has a limiting cap and a rod extending from the limiting cap. The rod has at least one external thread on its outer periphery. The locking device has a mounting hole that extends downward through the rod and has an internal thread. The limiting cap is located above the locking plate. The rod passes downward through the opening by a screw. A portion of the fastener protrudes into the mounting hole and engages with the threaded rod. A portion of each torsion bar has an upper limit in the vertical direction between the corresponding locking plate and the end plate, and an upper limit in the front-back direction between at least one limiting member and the connecting portion.

9. A connector assembly, characterized in that, include: A circuit board; An electrical connector is located above the circuit board; One radiator; A clamping member is used to carry a chip module and mount it above the electrical connector. The heat sink is mounted above the chip module. The clamping member is provided with at least two first guide holes. A holding device, the holding device comprising: A mounting base is installed above the circuit board. The mounting base has a base plate, the base plate has a window and two side plates located on the left and right sides of the window, and the window is for accommodating the electrical connector. Two fasteners are provided corresponding to the two side plates and are used to fasten to the left and right sides of the radiator. Each fastener has a connecting plate, which is stacked on top of the corresponding side plate. At least two guide posts are provided, corresponding to the two side plates and the two fasteners. Each guide post has a positioning part and a guide part located above the positioning part. The positioning part is riveted to the corresponding side plate and the connecting plate respectively. The guide part protrudes upward from the corresponding connecting plate and extends upward into the first guide hole for guiding the clamping member.

10. The connector assembly as claimed in claim 9, characterized in that, The holding device further includes at least two guide posts corresponding to the two side plates and the two fasteners. Each guide post has a fixing part and a guide part located above the fixing part. The fixing part is riveted to the corresponding side plate and the connecting plate respectively. The guide part protrudes upward from the corresponding connecting plate. Before the heat sink and the clamping member are installed, the guide part protrudes upward into a third guide hole provided by a dust cover covering the electrical connector to guide the dust cover.

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