Extraction frame structure of expansion card module and electronic device having the same

Abstract

The present invention primarily discloses a drawer structure for an expansion card module and an electronic device having the drawer structure. The drawer structure includes: a base plate, a first fixing unit disposed on the front end of the base plate, a second fixing unit disposed on the first side of the base plate, a front panel, at least one first electrical connection interface, a second electrical connection interface, a third electrical connection interface, and a side panel. The drawer structure of the present invention is used to accommodate an expansion card module, thereby carrying the expansion card module through an insertion port of a housing of an electronic device. After the drawer structure is placed within the electronic device, an electrical connection end of the first electrical connection interface is inserted into an electrical connection slot disposed on a mainboard, thereby coupling the expansion card module to the mainboard via the second electrical connection interface, the third electrical connection interface, the first electrical connection interface, and the electrical connection slot, thereby enabling the electronic device to drive and use the expansion card module.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic devices, and more particularly to a drawer structure used in an electronic device, so that any expansion card module can be carried by the drawer structure, thereby coupling to the mainboard of the electronic device through the drawer structure to achieve functional expansion. Background Art

[0002] As is known, various computer devices exist today, such as personal computers, server computers, embedded computers, single-board computers, industrial computers, vehicle-mounted computers, security monitoring systems, gaming systems, and game consoles. To facilitate functional expansion and component repair, computer manufacturers typically integrate chipsets, I / O interface units, and electronic components into a motherboard using modular assembly. The motherboard includes at least one expansion slot for inserting a functional expansion board. For example, Taiwan Patent No. I704727 discloses an expansion card module and server system.

[0003] According to Taiwan Patent No. 1704727, a conventional expansion card is a PCIe expansion card, and its structure primarily comprises at least one circuit board structure and a bracket. Specifically, the circuit board structure comprises at least one circuit board, and an electrical connection interface (i.e., a gold finger) is provided on one side of the circuit board. To use the PCIe expansion card, the electrical connection interface is first inserted into a PCIe slot of a host device, and the bracket is exposed through an opening in the housing of the host device. The bracket is then secured to the housing using screws.

[0004] Common PCIe expansion cards include: display cards, network cards, sound cards, video capture cards, sound capture cards, etc. Electronic function engineers who have been involved in the design and manufacture of modular computers for a long time must know that the size of the circuit board and / or bracket of the PCIe expansion card will vary in different functional expansion applications, as shown in the following table (1).

[0005] Table (1)

[0006]

[0007]

[0008] Therefore, it can be seen that the length of the opening of the housing of the host device must be specially designed according to the height of the baffle in Table (1). In other words, in the prior art, when adding at least one PCIe expansion card to a host device, if the specifications of the PCIe expansion card and the size of the opening of the housing of the host device are not considered in advance, it is very likely that the PCIe expansion card cannot be added to the host device because the specifications of the PCIe expansion card and the size of the opening of the housing do not match.

[0009] From the above description, it is clear that the application mode of conventional PCIe expansion cards needs to be improved. In view of this, the inventors of this case have made great efforts to research and invent, and finally developed a pull-out frame structure for expansion card modules. Summary of the Invention

[0010] The present invention provides a drawer structure for accommodating an expansion card module, thereby carrying the expansion card module through an insertion opening of a housing of an electronic device. After the drawer structure is placed within the electronic device, the expansion card module is coupled to a motherboard disposed within the housing via the drawer structure, enabling the electronic device to be powered and used.

[0011] To achieve the above-mentioned object, the present invention proposes an embodiment of the extraction rack structure, which includes:

[0012] a substrate;

[0013] A first fixing unit is provided on a front end side of the base plate and includes at least a panel combining member and a plug-in member;

[0014] a second fixing unit, disposed on a first side edge of the base plate and comprising at least one side plate coupling member;

[0015] a front panel, coupled to the front end side of the substrate through the at least one panel coupling member and having a first opening;

[0016] At least one first electrical connection interface is provided on the substrate and close to a rear end side of the substrate;

[0017] a second electrical connection interface disposed on the substrate and close to a second side edge of the substrate;

[0018] a third electrical connection interface, electrically connected between the first electrical connection interface and the second electrical connection interface; and

[0019] a side panel, which is disposed on the first side of the base plate through the at least one side panel coupling member, and a baffle fixing portion is provided on one end of the side panel, the baffle fixing portion being exposed from the front panel through the first opening;

[0020] Wherein, when an expansion card module including a circuit board structure and a baffle is placed on the substrate, an electrical connection end of the circuit board structure is connected to the second electrical connection interface, thereby coupling to the first electrical connection interface through the second electrical connection interface and the third electrical connection interface;

[0021] wherein, after the expansion card module is placed on the base plate, an inserting portion of the baffle is engaged with the plug-in component, and a locking portion of the baffle is exposed from the front panel through the first opening;

[0022] The locking portion and the baffle fixing portion are locked together by a screw, so that the expansion card module is stably placed on the base plate.

[0023] In one embodiment, when the expansion card module is placed on the base plate and the locking portion and the baffle fixing portion are fastened together by the screws, the side of the expansion card module is tightly abutted by a plurality of abutting members formed on the side plate.

[0024] In one embodiment, the front panel further has a second opening, and the baffle is provided with at least a third opening, so that a signal transmission interface of the expansion card module is exposed to the front panel through the third opening and the second opening.

[0025] In one embodiment, the first electrical connection interface is a first bridge circuit board having a first electrical connection end and a second electrical connection end. Furthermore, when the drawer structure is placed within an electronic device, the second electrical connection end of the first electrical connection interface is inserted into an electrical connection slot provided on a mainboard.

[0026] In one embodiment, the second electrical connection interface includes a second bridge circuit board and an electrical connection slot disposed on the second bridge circuit board.

[0027] In one embodiment, a notch is formed on a portion of the second side of the substrate, and the third electrical connection interface includes:

[0028] a first electrical connector electrically connected to an electrical connection end of the second bridge circuit board;

[0029] at least one second electrical connector, wherein the second electrical connector is electrically connected to the first electrical connection end of the first electrical connection interface; and

[0030] At least one cable is connected between the second electrical connector and the first electrical connector and passes through the notch of the substrate.

[0031] In a feasible embodiment, the number of the first electrical connection interface is 1, and the first electrical connection end and the second electrical connection end of the first electrical connection interface, the electrical connection slot, and the electrical connection end of the second bridge circuit board all comply with PCIe x16 specifications.

[0032] In another feasible embodiment, the number of the first electrical connection interfaces is 2, the first electrical connection end and the second electrical connection end of the first electrical connection interface both comply with the PCIe x8 specification, and the electrical connection slot and the electrical connection end of the second bridge circuit board both comply with the PCIe x16 specification.

[0033] In one embodiment, the extraction rack structure of the present invention further includes an adjustable fixing unit, which includes:

[0034] a first plate member, located on the base plate, and having one end side provided with a fixing portion for connecting to the side plate coupling member;

[0035] a second plate having at least one insertion hole formed therein; and

[0036] a fixing block connected to one end of the second plate and having an embedding groove;

[0037] The first plate is provided with at least one sliding groove, and a locking piece is sequentially passed through the sliding groove and embedded in the insertion hole of the second plate;

[0038] After the expansion card module is placed on the base plate, the position of the locking piece in the sliding groove is adjusted to drive the second plate to move so that one side of the expansion card module is embedded in the embedding groove of the fixing block, and then the first plate and the second plate are locked and fixed by the locking piece.

[0039] Furthermore, the present invention also provides an electronic device having a housing for accommodating a motherboard, and an insertion opening formed on a side panel of the housing. The electronic device is characterized in that it has a drawer structure according to the present invention as described above, so that an expansion card module can be carried by the drawer structure and inserted into the housing through the insertion opening, thereby coupling the expansion card module to the motherboard through the drawer structure.

[0040] In a feasible embodiment, the aforementioned electronic device is any one of the following: a desktop computer, an all-in-one computer, a server, an embedded computer, a modular computer, an industrial computer, a vehicle-mounted computer, a security monitoring host, a gaming host, or a game console. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 A perspective view showing an electronic device having a drawer structure according to the present invention;

[0042] Figure 2A A first perspective view showing the structure of the extraction rack of the present invention;

[0043] Figure 2B A second perspective view showing the structure of the extraction rack of the present invention;

[0044] Figure 3A It is a first exploded perspective view of the extraction rack structure of the present invention;

[0045] Figure 3B A second exploded perspective view of the extraction rack structure of the present invention;

[0046] Figure 4A A first perspective view of the extraction frame structure and an expansion card module of the present invention;

[0047] Figure 4B A second perspective view of the extraction frame structure and the expansion card module of the present invention;

[0048] Figure 5 A first top view of the drawer structure of the present invention for carrying the expansion card module;

[0049] Figure 6 is a third exploded perspective view of the extraction rack structure of the present invention;

[0050] Figure 7A is a third perspective view of the extraction frame structure and the expansion card module of the present invention;

[0051] Figure 7B A fourth perspective view of the extraction frame structure and the expansion card module of the present invention; and Figure 8 It is a second top view of the extraction frame structure of the present invention for carrying the expansion card module.

[0052]

Explanation of symbols

[0053] <The present invention>

[0054] 1: Extraction rack structure

[0055] 11:Substrate

[0056] 110: Notch

[0057] 111: flange

[0058] 11P: Support column

[0059] 12a: First panel joint

[0060] 12b: Second panel joint

[0061] 12c: Third panel joint

[0062] 13: Connector

[0063] 14a: first side panel joint

[0064] 14b: Second side panel joint

[0065] 15:Front panel

[0066] 151: First Opening

[0067] 152: Second opening

[0068] 153: First screw hole

[0069] 16: First electrical connection interface

[0070] 17: Second electrical connection interface

[0071] 171: Second bridge circuit board

[0072] 172: electrical connection slot

[0073] 173: Spacer

[0074] 18: Side panels

[0075] 180: Second screw hole

[0076] 181: baffle fixing part

[0077] 182:Resistance piece

[0078] 184: Third screw hole

[0079] 191: first electrical connector

[0080] 192: Second electrical connector

[0081] 193: Cable

[0082] 1A: Cover

[0083] 1B: Adjustable fixing unit

[0084] 1B1: First plate

[0085] 1B2: Fixed part

[0086] 1B3: chute

[0087] 1B4: Second plate

[0088] 1B5: Insert hole

[0089] 1B6: Fixed block

[0090] 1B7: Bezel

[0091] 2: Expansion card module

[0092] 21: Circuit board structure

[0093] 211: electrical connection end

[0094] 22: Baffle

[0095] 221: Insert

[0096] 222: Locking part

[0097] 23:Signal transmission interface

[0098] 3: Electronic devices

[0099] 31: Shell

[0100] 311: Entrance DETAILED DESCRIPTION

[0101] In order to more clearly describe the extraction frame structure of an expansion card module and the electronic device having the extraction frame structure proposed by the present invention, preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0102] First embodiment

[0103] See also Figure 1 , which shows a three-dimensional diagram of an electronic device having a drawer structure of the present invention. Figure 1 As shown, the drawer structure 1 of the present invention is used to accommodate an expansion card module 2, thereby carrying the expansion card module 2 through an insertion port 311 of a housing 31 of an electronic device 3. After the drawer structure 1 is placed within the electronic device 3, the expansion card module 2 is coupled to the motherboard disposed within the housing 31 via the drawer structure 1 of the present invention, enabling the electronic device 3 to be powered and used. In a feasible embodiment, the electronic device 3 may be a desktop computer, an all-in-one computer, a server, an embedded computer, a modular computer, an industrial computer, an in-vehicle computer, a security monitoring system, a gaming system, or a game console.

[0104] Figure 2A and Figure 2B The first and second perspective views of the extraction rack structure of the present invention are shown. Figure 3A and Figure 3BThe first and second exploded views of the drawer frame structure of the present invention are shown. According to the design of the present invention, the drawer frame structure 1 includes: a base plate 11, a first fixing unit (12a, 12b, 12c) including a first panel assembly 12a, a second panel assembly 12b, and a third panel assembly 12c, a connector 13, a second fixing unit (14a, 14b) including a first side panel assembly 14a and a second side panel assembly 14b, a front panel 15, at least one first electrical connection interface 16, a second electrical connection interface 17, a third electrical connection interface (191, 192, 193), and a side panel 18. As shown in the figure, the first panel assembly 12a, the second panel assembly 12b, the third panel assembly 12c, and the connector 13 are all disposed on the front side of the base plate 11, and the first fixing unit includes a first panel assembly 12a, a second panel assembly 12b, and a third panel assembly 12c. On the other hand, the second fixing unit is disposed on the first side of the base plate 11 and includes a first side panel coupling member 14a and a second side panel coupling member 14b. More specifically, the front panel 15 has a first opening 151, a second opening 152, and a plurality of first screw holes 153. It should be understood that each of the first screw holes 153 can be fastened to the corresponding panel coupling member (12a, 12b, 12c) using screws, thereby securing the front panel 15 to the front end of the base plate 11.

[0105] like Figure 3A and Figure 3B As shown, two first electrical connection interfaces 16 are provided on the substrate 11, near a rear end of the substrate 11. Furthermore, a second electrical connection interface 17 is provided on the substrate 11, near a second side of the substrate 11. According to the design of the present invention, the first electrical connection interface 16 is a first bridge circuit board having a first electrical connection end and a second electrical connection end, and the second electrical connection interface 17 includes a second bridge circuit board 171 and an electrical connection slot 172 provided on the second bridge circuit board 171. It is worth noting that both the first and second sides of the substrate 11 have at least one outwardly extending flange 111, and the substrate 11 is provided with a plurality of support columns 11P for supporting the first and second bridge circuit boards 171. It should be understood that the flange 111 is used to mate with a guide unit (e.g., a slide groove or rail) disposed within the housing 31, allowing the drawer structure 1, which passes through the insertion opening 311, to slide within the housing 31 via the guide unit. With this design, after the drawer structure 1 is placed within the electronic device 3, the second electrical connection ends of the two first electrical connection interfaces 16 are inserted into an electrical connection slot (i.e., a PCIe slot) disposed on the motherboard.

[0106] It should be noted that a notch 110 is defined on a portion of the second side edge of the substrate 11. Furthermore, according to the present invention, the third electrical connection interface includes a first electrical connector 191, at least one second electrical connector 192, and at least one cable 193. The first electrical connector 191 is electrically connected to an electrical connection end of the second bridge circuit board 171, the second electrical connector 192 is electrically connected to the first electrical connection end of the first electrical connection interface 16, and the cable 193 is connected between the second electrical connector 192 and the first electrical connector 191. It should be understood that the number of second electrical connectors 192 is the same as the number of first electrical connection interfaces 16. In other words, if there are two first electrical connection interfaces 16 and both their first and second electrical connection ends comply with the PCIe x8 standard, the number of second electrical connectors 192 is also two, and both the electrical connection slot 172 and the electrical connection end of the second bridge circuit board 171 comply with the PCIe x16 standard. In another possible embodiment, the number of the first electrical connection interface 16 can be one, and both the first electrical connection end and the second electrical connection end of the first electrical connection interface 16 conform to the PCIe x16 specification. In this case, the number of the second electrical connector 192 is also one, and both the electrical connection end of the electrical connection slot 172 and the electrical connection end of the second bridge circuit board 171 conform to the PCIe x16 specification. It should be noted that the cable 193 is connected between the second electrical connector 192 and the first electrical connector 191 and passes through the notch 110 of the substrate 11.

[0107] like Figure 3A and Figure 3B As shown, the side panel 18 is provided with a plurality of second screw holes 180. It should be understood that each of the second screw holes 180 can be fastened to the corresponding side panel coupling member (14a, 14b) using screws, thereby positioning the side panel 18 on the first side of the base panel 11. Furthermore, a baffle fixing portion 181 is provided on one end of the side panel 18, and the baffle fixing portion 181 is exposed through the first opening 151 to expose the front panel 15.

[0108] Continue to read Figure 3A and Figure 3B , and please also refer to Figure 4A , which shows a first perspective view of the extraction frame structure and an expansion card module of the present invention. And, Figure 4B The second perspective view shows the extraction frame structure and the expansion card module of the present invention. It should be known that the expansion card module 2 generally includes a circuit board structure (Circuit board assembly) 21 and a bracket (Bracket) 22, wherein the circuit board structure 21 has an electrical connection end 211, and the top and bottom ends of the bracket 22 respectively have a locking portion 222 and an inserting portion 221. Figure 2B 、 Figure 4A and Figure 4B As shown, when the expansion card module 2 is placed on the substrate 11, the electrical connection end 211 of the circuit board structure 21 is inserted into the electrical connection slot 172 of the second electrical connection interface 17, thereby coupling the first electrical connection interface 16 through the second electrical connection interface 17 and the third electrical connection interface (including: the first electrical connector 191, the second electrical connector 192 and the cable 193).

[0109] Continue to read Figure 2B 、 Figure 4A and Figure 4B , and please also refer to Figure 5 , which shows a first top view of the drawer structure 1 of the present invention carrying the expansion card module 2. As shown in the figure, after the expansion card module 2 is placed on the base plate 11, the inserting portion 221 of the baffle 22 engages with the plug-in connector 13, and the locking portion 222 of the baffle 22 is exposed through the first opening 151 to the front panel 15. At this time, the locking portion 222 and the baffle fixing portion 181 are tightened together using screws, thereby stably placing the expansion card module 2 on the base plate 11. Furthermore, according to the design of the present invention, after the expansion card module 2 is placed on the base plate 11 and the locking portion 222 and the baffle fixing portion 181 are tightened together using the screws, the side edges of the expansion card module 2 are tightly abutted by the multiple abutting members 182 formed on the side panel 18.

[0110] It should be noted that two spacers 173 are provided on the second bridge circuit board 171, and a cover 1A is combined with the two spacers 173 and the side panel 18, thereby being arranged on the substrate 11 to cover the expansion card module 2, so that the expansion card module 2 is accommodated between the cover 1A and the substrate 11.

[0111] Second embodiment

[0112] Continue to read Figure 6 , which shows a third perspective exploded view of the drawer structure of the present invention. In the second embodiment, the drawer structure 1 of the present invention further comprises an adjustable fixing unit 1B, which comprises: a first plate 1B1, a second plate 1B4 and a fixing block 1B6. Figure 6As shown, a fixing portion 1B2 is provided at one end of the first plate 1B1, and a plurality of third screw holes 184 are defined in the side panel 18. It should be understood that the third screw holes 184 and the fixing portion 1B2 can be screwed together onto the first side panel assembly 14a, thereby securing the first plate 1B1 to the base plate 11. Meanwhile, at least one insertion hole 1B5 is defined in the second plate 1B4, and a fixing block 1B6 is connected to one end of the second plate 1B4 and has a recess 1B7.

[0113] Continue to read Figure 6 , and please also refer to Figure 7A , which shows a third perspective view of the extraction frame structure and the expansion card module of the present invention. And, Figure 7B A fourth perspective view showing the extraction frame structure and the expansion card module of the present invention. Figure 8 A second top view of the drawer structure 1 of the present invention carrying the expansion card module 2 is shown. Figure 6 、 Figure 7A 、 Figure 7B and Figure 8 As shown, according to the design of the present invention, the first plate 1B1 is provided with at least one slot 1B3, and a locking member is sequentially inserted through the slot 1B3 and into the insertion hole 1B5 of the second plate 1B4. With this design, after the expansion card module 2 is placed on the base plate 11, the locking member is adjusted in the slot 1B3 to move the second plate 1B4, so that one side of the expansion card module 2 is inserted into the slot 1B7 of the fixing block 1B6. The locking member is then used to securely lock the first and second plates 1B1 and 1B4.

[0114] like Figure 6 、 Figure 7A ,and Figure 7B As shown, the baffle 22 further defines at least one third opening, such that a signal transmission interface 23 of the expansion card module 2 is exposed to the front panel 15 through the third opening and the second opening 152 .

[0115] It should be understood that the circuit board assembly 21 of the expansion card module 2 in the first embodiment is of full-height specifications, while the circuit board assembly 21 of the expansion card module 2 in the second embodiment is of low-profile specifications. In other words, regardless of whether the circuit board of the expansion card module 2 is of full-height or low-profile specifications, the drawer structure 1 of the present invention can accommodate the expansion card module 2 and then carry the expansion card module 2 through the insertion port 311 of the housing 31 of the electronic device 3. Furthermore, after the drawer structure 1 of the present invention is placed within the electronic device 3, the expansion card module 2 is coupled to the motherboard within the housing 31 via the drawer structure 1, allowing the electronic device 3 to operate and utilize the expansion card module 2.

[0116] Thus, the above description fully and clearly describes the expansion card module extraction frame structure and electronic device having the same according to the present invention. It must be emphasized that the above detailed description is a specific illustration of a feasible embodiment of the present invention, but such embodiment is not intended to limit the scope of the present invention. All equivalent implementations or modifications that do not depart from the spirit of the present invention are intended to be included in the scope of the present invention.

Claims

1. A drawer structure, characterized in that: include: a substrate; A first fixing unit is provided on a front end side of the base plate and includes at least a panel combining member and a plug-in member; a second fixing unit, disposed on a first side edge of the base plate and comprising at least one side plate coupling member; a front panel, coupled to the front end side of the substrate through the at least one panel coupling member and having a first opening; At least one first electrical connection interface is provided on the substrate and close to a rear end side of the substrate; a second electrical connection interface disposed on the substrate and close to a second side edge of the substrate; a third electrical connection interface, electrically connected between the first electrical connection interface and the second electrical connection interface; and a side panel, which is disposed on the first side of the base plate through the at least one side panel coupling member, and a baffle fixing portion is provided on one end of the side panel, the baffle fixing portion being exposed from the front panel through the first opening; Wherein, when an expansion card module including a circuit board structure and a baffle is placed on the substrate, an electrical connection end of the circuit board structure is connected to the second electrical connection interface, thereby coupling to the first electrical connection interface through the second electrical connection interface and the third electrical connection interface; wherein, after the expansion card module is placed on the base plate, an inserting portion of the baffle is engaged with the plug-in component, and a locking portion of the baffle is exposed from the front panel through the first opening; The locking portion and the baffle fixing portion are locked together by a screw, so that the expansion card module is stably placed on the base plate.

2. The extraction rack structure according to claim 1, wherein: When the expansion card module is placed on the base plate and the locking portion and the baffle fixing portion are locked together by the screws, the side of the expansion card module is tightly pressed by a plurality of pressing pieces formed on the side plate.

3. The extraction rack structure according to claim 1, wherein: The front panel also has at least one screw-fastening portion, and the at least one screw-fastening portion is fastened together with the at least one panel combining piece by using at least one screw.

4. The extraction rack structure according to claim 3, characterized in that: The front panel also has a second opening, and the baffle is provided with at least a third opening, so that a signal transmission interface of the expansion card module is exposed to the front panel through the third opening and the second opening.

5. The extraction rack structure according to claim 1, wherein: The first electrical connection interface is a first bridge circuit board having a first electrical connection end and a second electrical connection end.

6. The extraction rack structure according to claim 5, characterized in that: When the extraction frame structure is placed in an electronic device, the second electrical connection end of the first electrical connection interface is inserted into an electrical connection slot provided on a mainboard.

7. The extraction rack structure according to claim 5, characterized in that: The second electrical connection interface includes a second bridge circuit board and an electrical connection slot disposed on the second bridge circuit board.

8. The extraction rack structure according to claim 7, characterized in that: A notch is formed on a portion of the second side of the substrate, and the third electrical connection interface includes: a first electrical connector electrically connected to an electrical connection end of the second bridge circuit board; at least one second electrical connector, wherein the second electrical connector is electrically connected to the first electrical connection end of the first electrical connection interface; and At least one cable is connected between the second electrical connector and the first electrical connector and passes through the notch of the substrate.

9. The extraction rack structure according to claim 8, characterized in that: The number of the first electrical connection interface is 1, and the first electrical connection end and the second electrical connection end of the first electrical connection interface, the electrical connection slot, and the electrical connection end of the second bridge circuit board all comply with PCIe x16 specifications.

10. The extraction rack structure according to claim 8, wherein: The number of the first electrical connection interfaces is 2, the first electrical connection end and the second electrical connection end of the first electrical connection interface both comply with the PCIe x8 specification, and the electrical connection slot and the electrical connection end of the second bridge circuit board both comply with the PCIe x16 specification.

11. The extraction rack structure according to claim 8, wherein: The first side and the second side of the substrate both have at least one flange extending outward, and the substrate is provided with a plurality of supporting columns for supporting the first bridge circuit board and the second bridge circuit board.

12. The extraction rack structure according to claim 11, wherein: At least one spacer is arranged on the second bridge circuit board, and a cover is combined with the at least one spacer and the side plate, thereby being arranged on the base plate to cover the expansion card module.

13. The extraction rack structure according to claim 1, wherein: Also included is an adjustable fixing unit, which includes: a first plate member, located on the base plate, and having one end side provided with a fixing portion for connecting to the side plate coupling member; a second plate having at least one insertion hole formed therein; and a fixing block connected to one end of the second plate and having an embedding groove; The first plate is provided with at least one sliding groove, and a locking piece is sequentially passed through the sliding groove and embedded in the insertion hole of the second plate; After the expansion card module is placed on the base plate, the position of the locking piece in the sliding groove is adjusted to drive the second plate to move so that one side of the expansion card module is embedded in the embedding groove of the fixing block, and then the first plate and the second plate are locked and fixed by the locking piece.

14. An electronic device comprising a housing containing a motherboard, wherein a side panel of the housing is provided with an insertion opening; The electronic device has a drawer structure according to any one of claims 1 to 13, so as to utilize the drawer structure to carry an expansion card module and insert it into the housing through the insertion port, so that the expansion card module is coupled to the mainboard through the drawer structure.

15. The electronic device according to claim 14, wherein: The electronic device is any one of the following: a desktop computer, an all-in-one computer, a server, an embedded computer, a modular computer, an industrial computer, a vehicle-mounted computer, a security monitoring host, a gaming host, or a game console.

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