TWI845234B - Docking device - Google Patents

Abstract

A docking device is suitable for connecting an electronic device and including a base, an expansion base, an adapter, a hinge module, and a locking module is provided. The base has a first end and a second end opposite to each other. The expansion base is disposed on the first end of the base. The adapter base is rotatably connected to the expansion base. The hinge module is disposed between the expansion base and the adapter. The locking module is disposed in the adapter and connected to the hinge module. The locking module is partially extended outside the adapter. The electronic device is adapted to be installed on the adapter and detachably connected to the locking module. When the adapter base is unfolded a predetermined angle relative to the base, the locking module is unlocked by the hinge module.

Description

Expansion Device

The present invention relates to an expansion device, and in particular to an expansion device connected to an electronic device.

Existing tablet computers have the advantages of being easy to carry and store, and have been widely used in leisure and entertainment occasions. In order to make tablet computers suitable for work or business occasions, expansion docks that can be combined with tablet computers are now developed. After being combined, the tablet computer's operating performance, heat dissipation efficiency, or a keyboard can be added.

However, when the existing docking station and the tablet are combined, it is usually not intuitive to remove the tablet from the docking station.

The present invention provides an expansion device suitable for connecting to an electronic device to provide heat dissipation function and input function, and provides an intuitive separation method between the expansion device and the electronic device.

The expansion device of the present invention includes a base, an expansion seat, an adapter seat, a pivot module and a locking module. The base has a first end and a second end opposite to each other. The expansion seat is arranged at the first end of the base. The adapter seat is rotatably connected to the expansion seat. The pivot module is arranged between the expansion seat and the adapter seat. The locking module is arranged in the adapter seat and connected to the pivot module. The locking module partially protrudes from the adapter seat. The electronic device is suitable for being installed on the adapter seat and is detachably connected to the locking module. When the adapter seat is unfolded at a predetermined angle relative to the base, the pivot module unlocks the locking module.

Based on the above, the expansion device of the present invention is connected to the electronic device through the adapter, and the base, the expansion base and the electronic device are coupled to each other to provide heat dissipation function, input function or improve computing performance. When the adapter is unfolded to a predetermined angle relative to the base, the hinge module will automatically unlock the locking module, and the user can remove the electronic device at this time.

The present invention provides an expansion device suitable for connecting to an electronic device to provide heat dissipation and input functions, and the expansion device and the electronic device can be unlocked by pressing with external force.

The expansion device of the present invention is suitable for connecting an electronic device. The expansion device includes a base, an expansion seat, an adapter seat, a pivot module and a locking module. The base has a first end and a second end opposite to each other. The expansion seat is arranged at the first end of the base. The adapter seat is rotatably connected to the expansion seat. A plurality of positioning blocks are arranged on a top surface of the adapter seat. The pivot module is arranged between the expansion seat and the adapter seat. The locking module is arranged in the adapter seat and partially protrudes from the adapter seat. The electronic device is suitable for being installed on the adapter seat and is detachably connected to the locking module and the plurality of positioning blocks.

Based on the above, the expansion device of the present invention is connected to the electronic device through the adapter, and the base, the expansion base and the electronic device are coupled to each other to provide heat dissipation function, input function or improve computing performance. The user is suitable for applying external force to the electronic device to unlock the locking module.

100, 100A, 100B, 100C: Expansion device

110: Base

111:Keyboard

120: Expansion seat

121: Heat dissipation module

122: Functional module

1221: Graphics card

1222: Hard disk expansion slot

130: Adapter

140: Positioning block

150, 150a: pivot module

151: First axis

152: Second axis

153: First bracket

154: Second bracket

155: Gear set

151a: First steering lever

152a: Second steering lever

153a: First tongue

154a: Second tongue

155a: First bracket

156a: Second bracket

157a: First limit block

158a: Second limit block

159a: Push block

160, 160b, 160c: Locking module

161, 161b, 161c: tenon

1611: Buckle part

1611c: Steering part

1612: Mobile Department

1612c: hook part

1613c: Resistance axis

162, 163c: Elastic parts

162c: Pressure plate

170: Trigger structure

171:Fixed bracket

172: First cam

173: First connecting rod

174: Second connecting rod

175: Push block

170b: Unlock module

171b:Button

172b: First slider

173b: Second slider

174b: Magnet

175b: Elastic parts

200: Electronic devices

D: Height difference

G: Groove

AS: Accommodation space

E1: First end

E2: Second end

IS: Inner wall surface

PA: Predetermined angle

PD: horizontal direction

S1: First slope

S2: Second slope

VD: vertical direction

FIG1A is a schematic diagram of an exploded view of an expansion device and an electronic device according to an embodiment of the present invention.

FIG1B is a schematic diagram of the expansion device and the electronic device in FIG1A in a closed state.

FIG1C is a schematic diagram of the expansion device and the electronic device in FIG1B in the unfolded state.

FIG1D is a three-dimensional schematic diagram of the electronic device of FIG1C being separated from the expansion device.

Figures 2A to 2C are schematic diagrams of the unfolding action of the locking module and the pivot module of Figure 1B.

Figures 3A to 3C are top-view schematic diagrams of the unfolding action of the locking module and the pivot module of Figures 2A to 2C.

Figures 4A to 4C are schematic diagrams of the unfolding action of the pivot module of Figure 1B using another embodiment.

Figures 5A to 5C are schematic diagrams of the unlocking action of Figure 1B using the unlocking module and the locking module.

Figures 5D and 5E are schematic side views of the unlocking module of Figures 5A to 5B.

Figures 6A to 6C are schematic diagrams of the unlocking action of the locking module of Figure 1B using another embodiment.

FIG. 1A is a schematic diagram of an expansion device and an electronic device in an embodiment of the present invention. FIG. 1B is a schematic diagram of the expansion device and the electronic device in FIG. 1A in a closed state. FIG. 1C is a schematic diagram of the expansion device and the electronic device in FIG. 1B in an unfolded state. FIG. 1D is a three-dimensional schematic diagram of the electronic device in FIG. 1C separated from the expansion device.

Figures 2A to 2C are schematic diagrams of the unfolding action of the locking module and the pivot module of Figure 1B.

Referring to FIG. 1A , the expansion device 100 of the present invention is suitable for connecting to an electronic device 200 . The electronic device 200 is, for example, a tablet computer, a smart phone, or a similar portable device.

Referring to FIG. 1A, FIG. 1B and FIG. 2A, the expansion device 100 includes a base 110, an expansion seat 120, an adapter seat 130, a plurality of positioning blocks 140, a pivot module 150 and a locking module 160.

The base 110 has a first end E1 and a second end E2 opposite to each other. The base 110 is suitable for carrying batteries, connection ports or other similar electronic components. The expansion base 120 is disposed at the first end E1 of the base 110. In detail, there is a height difference D between the expansion base 120 and the base 110 to form a storage space. In a closed state (see FIG. 1B ), the electronic device 200 is stored in the storage space.

The adapter 130 is rotatably connected to the expansion seat 120. A plurality of positioning blocks 140 are disposed on a top surface of the adapter 130, wherein each positioning block 140 is, for example, made of a magnetic material and is used to couple the electronic device 200. The pivot module 150 is disposed between the expansion seat 120 and the adapter 130, and the expansion seat 120 and the adapter 130 rotate with each other through the pivot module 150. The locking module 160 is disposed in the adapter 130 and connected to the pivot module 150, wherein a portion of the locking module 160 protrudes from the adapter 130.

Referring to FIG. 2A to FIG. 2C , the electronic device 200 is suitable for being installed on the adapter 130, and the electronic device 200 is detachably connected to the locking module 160 and the plurality of positioning blocks 140. When the adapter 130 is unfolded at a predetermined angle PA relative to the base 110, the hinge module 150 unlocks the locking module 160, and the electronic device 200 is suitable for separating the locking module 160 and the plurality of positioning blocks 140 and being removed from the adapter 130.

In addition, the electronic device 200 is electrically coupled to the base 110 and the expansion base 120 through a plurality of positioning blocks 140.

Referring to FIG. 1A , the base 110 further includes a keyboard 111 and the expansion base 120 further includes a plurality of heat dissipation modules 121 and a functional module 122. The keyboard 111 is disposed on the base 110 and adjacent to the expansion base 120. The plurality of heat dissipation modules 121 and the functional module 122 are disposed in the inner space of the expansion base 120. The keyboard 111, the plurality of heat dissipation modules 121 and the functional module 122 are suitable for coupling the electronic device 200 through a plurality of positioning blocks 140, thereby expanding the command input function, heat dissipation efficiency and operation performance of the electronic device 200.

Specifically, the functional module 122 includes a display card 1221 and a hard disk expansion slot 1222. When the electronic device 200 is installed on the adapter 130, the display card 1221 and the hard disk expansion slot 1222 are coupled to the electronic device 200, which can enhance its graphics computing capabilities and increase data storage space. In addition, the functional module 122 may also include a mobile power supply, a speaker, or a wireless network base station, which can be adjusted accordingly depending on the needs.

Figures 3A to 3C are top-view schematic diagrams of the unfolding action of the locking module and the pivot module of Figures 2A to 2C.

Referring to FIG. 2A and FIG. 3A , the locking module 160 has at least one latch 161 and at least one elastic member 162. In this embodiment, one latch 161 and one elastic member 162 are used as examples. A buckle portion 1611 of the latch 161 protrudes from the top surface of the adapter 130 and is engaged with the groove G of the electronic device 200. A moving portion 1612 of the latch 161 is movably disposed in the adapter 130. The two ends of the elastic member 162 are respectively connected to the moving portion 1612 and the adapter 130, and the elastic member 162 is suitable for providing elasticity to the moving portion 1612.

The pivot module 150 has a first rotating shaft 151, a second rotating shaft 152, a first bracket 153, a second bracket 154 and a gear set 155. The first rotating shaft 151 and the second rotating shaft 152 are arranged parallel to each other. The first bracket 153 and the second bracket 154 are respectively fixed on the first rotating shaft 151 and the second rotating shaft 152, and the first bracket 153 and the second bracket 154 are respectively connected to the expansion seat 120 and the adapter seat 130, and the gear set 155 connects the first rotating shaft 151 and the second rotating shaft 152 to achieve the effect of synchronous rotation.

2A and 3A, the expansion device 100 further includes a trigger structure 170, which is disposed in the adapter 130 and connected to the pivot module 150. The trigger structure 170 includes a fixed frame 171, a first cam 172, a first connecting rod 173, a second connecting rod 174 and a push block 175. The fixed frame 171 is fixed to the second bracket 154 or the adapter 130. The first cam 172 is movably sleeved on the first rotating shaft 151. The first connecting rod 173 is rotatably disposed on the fixed frame 171 and connected to the first cam 172, and the second connecting rod 174 is movably disposed on the fixed frame 171 and connected to the first connecting rod 173. The push block 175 is disposed on the second connecting rod 174 and a first inclined surface S1 of the push block 175 contacts a second inclined surface S2 of the moving part 1612.

With reference to FIGS. 2A to 2C and 3A to 3C, when the electronic device 200 drives the adapter 130 to expand to a predetermined angle PA relative to the base 110, the adapter 130 drives the first shaft 151 through the second bracket 154 and synchronously drives the second shaft 152 and the first bracket 153 through the gear set 155. During the rotation of the first shaft 151, the first cam 172 is driven to slide axially along the first shaft 151, and the first cam 172 drives the first connecting rod 173 to rotate relative to the fixed bracket 171.

Then, the first connecting rod 173 drives the second connecting rod 174 to slide along a direction perpendicular to the first rotating shaft 151, so as to drive the first inclined surface S1 of the push block 175 to slide along the second inclined surface S2, so that the overlapping area of the first inclined surface S1 and the second inclined surface S2 gradually decreases (see FIG. 2A to FIG. 2B). This indicates that the push block 175 is gradually misplaced at the moving portion 1612, and the elastic member 162 elastically recovers to push the moving portion 1612 to unlock the buckle portion 1611 and the groove G of the electronic device 200, so that the user can directly remove the electronic device 200.

On the contrary, referring to FIG. 2C to FIG. 2A, when the electronic device 200 is installed on the expansion device 100, the groove G of the electronic device 200 is correspondingly engaged with the latch 161 and the plurality of positioning blocks 140, and then the electronic device 200 drives the adapter 130 to fold relative to the base 110 less than the predetermined angle PA, and the first inclined surface S1 of the pushing block 175 can push the second inclined surface S2 of the moving part 1612, so that the buckle part 1611 is engaged with the groove G of the electronic device 200.

Figures 4A to 4C are schematic diagrams of the unfolding action of the pivot module of Figure 1B using another embodiment.

Referring to FIG. 4A to FIG. 4B , the expansion device 100A of the present embodiment is different from the expansion device 100 shown in FIG. 2A in that the pivot module 150a of the present embodiment has a plurality of first steering rods 151a, a plurality of second steering rods 152a, at least one first tongue piece 153a, at least one second tongue piece 154a, a first bracket 155a, a second bracket 156a, a plurality of first limit blocks 157a, and a plurality of second limit blocks 158a.

The plurality of first steering rods 151a and the plurality of second steering rods 152a are mutually pivoted, at least one first tongue piece 153a is pivoted to the plurality of first steering rods 151a, at least one second tongue piece 154a is pivoted to the plurality of second steering rods 152a, and the first bracket 155a and the second bracket 156a are respectively arranged on the at least one first tongue piece 153a and the at least one second tongue piece 154a. The plurality of first limit blocks 157a are arranged in the first bracket 155a and at least one first tongue piece 153a is slidably disposed between the plurality of first limit blocks 157a. The plurality of second limit blocks 158a are arranged in the second bracket 156a and at least one second tongue piece 154a is slidably disposed between the plurality of second limit blocks 158a.

Referring to FIG. 4A , the first bracket 155a and the second bracket 156a are connected to the adapter 130 and the expansion base 120 respectively. The pivot module 150a further includes at least one push block 159a, which is disposed on at least one first tongue 153a and a first inclined surface S1 of at least one push block 159a contacts a second inclined surface S2 of the moving portion 1612 of the tenon 161.

1B to 1D and 4A to 4C, when the electronic device 200 drives the adapter 130 to expand to a predetermined angle PA relative to the base 110, the adapter 130 drives the first steering rods 151a to pivot relative to the first steering rods 151a through the first bracket 155a, and the first bracket 155a drives at least one first tongue 153a to slide along the first limit blocks 157a, so that the push block 159a The first inclined surface S1 slides along the second inclined surface S2 of the moving part 1612, and the overlapping area of the first inclined surface S1 and the second inclined surface S2 gradually decreases (see Figure 4A to Figure 4B). This indicates that the push block 159a is gradually misplaced on the moving part 1612, and the elastic member 162 elastically recovers to push the moving part 1612 to unlock the buckle part 1611 and the groove G of the electronic device 200, so that the user can directly remove the electronic device 200.

On the contrary, referring to FIG. 4C to FIG. 4A, when the electronic device 200 is installed in the expansion device 100A, the groove G of the electronic device 200 is correspondingly engaged with the latch 161 and the plurality of positioning blocks 140, and then the electronic device 200 drives the adapter 130 to fold less than the predetermined angle PA relative to the expansion base 120, and the first inclined surface S1 of the pushing block 159a can push the second inclined surface S2 of the moving part 1612, so that the buckle part 1611 is engaged with the groove G of the electronic device 200.

Figures 5A to 5C are schematic diagrams of the unlocking action of Figure 1B using the unlocking module and the locking module. Figures 5D and 5E are schematic side views of the unlocking module of Figures 5A to 5B.

Referring to FIG. 5A , the expansion device 100B of this embodiment is different from the expansion device 100 shown in FIG. 1B in that the expansion device 100B includes a locking module 160b. The locking module 160b is disposed in the adapter 130 and partially protrudes from the adapter 130. The electronic device 200 is suitable for being installed on the adapter 130 and detachably connected to the locking module 160b and the plurality of positioning blocks 140. Here, the user is suitable for pressing the locking module 160b through the electronic device 200 to achieve the purpose of unlocking.

The locking module 160b has at least one latch 161b (the number of at least one latch 161b includes two), which is movably (rotatably, slidably or mobilely) disposed on one side of the adapter 130 and facing the electronic device 200. Each latch 161b is made of magnetic material, and the two grooves G of the electronic device 200 respectively accommodate the two latches 161b.

Referring to FIG. 5A , the expansion device 100 further includes an unlocking module 170b, which is disposed in the electronic device 200 and has a button 171b, a first sliding rod 172b, two second sliding rods 173b, two magnets 174b and two elastic members 175b. The button 171b is movably disposed in the electronic device 200, the first sliding rod 172b contacts the button 171b, and the two second sliding rods 173b are pivotally connected to the first sliding rod 172b. The two magnets 174b are pivotally connected to the two second sliding rods 173b and align the two latches 161b. The two ends of each elastic member 175b are respectively connected to the corresponding magnet 174b and an inner wall surface IS of the corresponding groove G.

Referring to FIG. 5A and FIG. 5B , further, the button 171b has a first inclined surface S1, and the first sliding rod 172b has a second inclined surface S2. The first inclined surface S1 can slidably contact the second inclined surface S2.

Referring to FIG. 5A to FIG. 5B and FIG. 5D and FIG. 5E, when the electronic device 200 and the expansion device 100B are unlocked, a force is applied to the button 171b, so that the first inclined surface S1 is suitable for pressing the second inclined surface S2 of the first sliding rod 172b to drive the first sliding rod 172b to move along a vertical direction VD to move away from the adapter 130, and then the first sliding rod 172b pulls the two second sliding rods 173b and the two second sliding rods 173b pull the two magnets 174b to move along a horizontal direction PD to misalign the two latches 161b, so that the two magnets 174b respectively stretch the two elastic members 175b to accumulate elastic force.

Referring to FIG. 5B and FIG. 5B , in this case, the two magnets 174b are misplaced on the two latches 161b, allowing the user to directly remove the electronic device 200.

On the contrary, referring to FIG. 5A , when the electronic device 200 is installed in the expansion device 100B, the two grooves G of the electronic device 200 are arranged to correspond to the two latches 161b, so that the two magnets 174b are directly magnetically attracted to the two latches 161b.

Figures 6A to 6C are schematic diagrams of the unlocking action of the locking module of Figure 1B using another embodiment.

Referring to FIG. 6A , the expansion device 100C of this embodiment is different from the expansion device 100 shown in FIG. 1B in that the expansion device 100C includes a locking module 160c. The locking module 160c is disposed in the adapter 130 and partially protrudes from the adapter 130. The electronic device 200 is suitable for being installed on the adapter 130 and detachably connected to the locking module 160c and the plurality of positioning blocks 140. Here, the user is suitable for pressing the locking module 160c through the electronic device 200 to achieve the purpose of unlocking.

The locking module 160c has two latches 161c, a pressure plate 162c and two elastic members 163c. The two latches 161c are pivotally connected to the adapter 130 and are suitable for engaging with the two grooves G of the electronic device 200. The pressure plate 162c is configured to be raised and lowered on the adapter 130. The two elastic members 163c are configured on the adapter 130 and each elastic member 163c is connected to the corresponding latch 161c and the pressure plate 162c.

Furthermore, each tenon 161c has a turning portion 1611c and a hook portion 1612c. The turning portion 1611c is pivoted to the adapter 130 via a resistance shaft 1613c, and the hook portion 1612c is orthogonal to the turning portion 1611c and penetrates the pressure plate 162c.

Referring to FIG. 6A to FIG. 6C , when the electronic device 200 and the expansion device 100C are unlocked, force is applied to the electronic device 200 and the pressing plate 162c and the two elastic members 163c are directly pressed down to synchronously push the two turning parts 1611c of the two latches 161c to rotate relative to the adapter 130, so that the two hook parts 1612c of the two latches 161c are respectively separated from the two grooves G. In this case, the two hook parts 1612c of the two latches 161c are already misplaced in the two grooves G, allowing the user to directly remove the electronic device 200.

On the contrary, referring to FIG. 6C to FIG. 6A, when the electronic device 200 is installed in the expansion device 100C, the two grooves G of the electronic device 200 are arranged to correspond to the two hooks 1612c of the two latches 161c. After the two hooks 1612c enter the two grooves G, the two elastic members 163c reset and push the two turning parts 1611c so that the two hooks 1612c are respectively engaged with the two grooves G.

In summary, the expansion device of the present invention is connected to the electronic device through the adapter, and the base, the expansion base and the electronic device are coupled to each other to provide heat dissipation function, input function or improve computing performance. When the adapter is unfolded to a predetermined angle relative to the base, the hinge module will automatically unlock the locking module, and the user can remove the electronic device at this time. In another embodiment, the user can apply external force to the electronic device to unlock the locking module.

100: Expansion device 110: Base 111: Keyboard 120: Expansion base 121: Heat dissipation module 122: Functional module 1221: Graphics card 1222: Hard drive expansion slot 130: Adapter 140: Positioning block 160: Locking module 200: Electronic device E1: First end E2: Second end

Claims (20)

An expansion device is suitable for connecting an electronic device, the expansion device comprising: a base having a first end and a second end opposite to each other; an expansion seat disposed at the first end of the base; an adapter seat rotatably connected to the expansion seat; a pivot module disposed between the expansion seat and the adapter seat; a locking module disposed in the adapter seat and connected to the pivot module, wherein the locking module partially protrudes from the adapter seat, A keyboard is arranged on the base and adjacent to the expansion base; a plurality of heat dissipation modules are arranged on the expansion base; and a functional module is arranged on the expansion base, wherein the keyboard, the heat dissipation modules and the functional module are suitable for coupling the electronic device, wherein the electronic device is suitable for being mounted on the adapter and detachably connected to the locking module, and when the adapter is unfolded at a predetermined angle relative to the base, the hinge module unlocks the locking module. The expansion device as described in claim 1, wherein the locking module has at least one latch and at least one elastic member, a latch portion of the at least one latch protrudes from the adapter and is engaged with at least one groove of the electronic device, a moving portion of the at least one latch is located in the adapter, and two ends of the at least one elastic member are respectively connected to the moving portion and the adapter. The expansion device as described in claim 2 further includes a trigger structure, which is arranged in the adapter. The trigger structure includes a fixed frame, a first cam, a first connecting rod, a second connecting rod and a push block. The fixed frame is fixed to a second bracket or the adapter. The first cam is movably arranged on the fixed frame. The first connecting rod is rotatably arranged on the fixed frame and connected to the first cam. The second connecting rod is movably arranged on the fixed frame and connected to the first connecting rod. The push block is arranged on the second connecting rod and a first inclined surface of the push block contacts a second inclined surface of the moving part. The expansion device as described in claim 3, wherein when the adapter is unfolded to the predetermined angle relative to the base, a first shaft drives the first cam to slide, the first cam drives the first connecting rod to rotate, the first connecting rod drives the second connecting rod to slide to drive the first inclined surface of the push block to slide along the second inclined surface, and the at least one elastic member pushes the moving part to unlock the buckle part and the at least one groove. The expansion device as described in claim 3, wherein the pivot module has a first rotating shaft, a second rotating shaft, a first bracket and the second bracket, the first rotating shaft and the second rotating shaft are arranged parallel to each other, the first cam is sleeved on the first rotating shaft, the first bracket and the second bracket are respectively sleeved on the first rotating shaft and the second rotating shaft, and the first bracket and the second bracket are respectively connected to the expansion seat and the adapter seat. An expansion device as described in claim 5, wherein the pivot module has a first gear set connecting the first rotating shaft and the second rotating shaft. The expansion device as described in claim 2, wherein the pivot module has a plurality of first steering rods, a plurality of second steering rods, at least one first tongue, a first bracket and a plurality of first limit blocks, the first steering rods and the second steering rods are mutually pivoted, the at least one first tongue is pivoted to the first steering rods, and the first bracket is arranged on the at least one first tongue, the first limit blocks are arranged in the first bracket and the at least one first tongue is slidably arranged between the first limit blocks. The expansion device as described in claim 7, wherein the first bracket and the second bracket are connected to the adapter and the expansion base respectively, and further comprises at least one push block, which is disposed on the at least one first tongue piece and a first inclined surface of the at least one push block contacts a second inclined surface of the moving part. The expansion device as described in claim 8, wherein when the adapter is unfolded to the predetermined angle relative to the base, the first steering rods drive the at least one first tongue to slide along the first limit blocks, so that the first inclined surface slides along the second inclined surface, and the at least one elastic member pushes the moving part to unlock the buckle part and the at least one groove. As described in claim 1, there is a height difference between the expansion seat and the base to form a storage space, and in a closed state, the electronic device is stored in the storage space. The expansion device as described in claim 1 further includes a plurality of positioning blocks disposed on a top surface of the adapter, and the electronic device is disposed on the positioning blocks to electrically couple the base and the expansion base. An expansion device is suitable for connecting an electronic device, the expansion device comprising: a base having a first end and a second end opposite to each other; an expansion seat disposed at the first end of the base; an adapter seat rotatably connected to the expansion seat; and a locking module disposed in the adapter seat and partially protruding from the adapter seat, wherein the locking module has at least one latch, and the at least one latch is a magnetic material, wherein the electronic device is suitable for being installed on the adapter seat and detachably connected to the locking module. The expansion device as described in claim 12, wherein the at least one latch is movably disposed on one side of the adapter and faces the electronic device, and at least one groove of the electronic device accommodates the at least one latch. The expansion device as described in claim 13 further includes an unlocking module, which is disposed in the electronic device and has a button, a first sliding rod, at least one second sliding rod, at least one magnet and at least one elastic member, wherein the button is movably disposed in the electronic device, the first sliding rod contacts the button, the at least one second sliding rod is pivoted to the first sliding rod, the at least one magnet is pivoted to the at least one second sliding rod and aligns with the at least one tenon, and the two ends of the at least one elastic member are respectively connected to the at least one magnet and an inner wall surface of the at least one groove. An expansion device as described in claim 14, wherein the button has a first inclined surface, the first sliding rod has a second inclined surface, and the first inclined surface can slidably contact the second inclined surface. As described in claim 15, the first inclined surface of the button is suitable for pressing the second inclined surface of the first sliding rod, so that the first sliding rod moves in a vertical direction to move away from the adapter, and the first sliding rod pulls the at least one second sliding rod and the at least one second sliding rod pulls the at least one magnet to move in a horizontal direction to misalign with the at least one tenon, and the at least one magnet stretches the at least one elastic member. The expansion device as described in claim 12, wherein the electronic device has at least one groove, the locking module has at least one tenon, a pressure plate and at least one elastic member, the at least one tenon is pivoted in the adapter and is suitable for being engaged with the at least one groove, the pressure plate is movably arranged on the adapter, and the at least one elastic member is arranged on the adapter and is respectively connected to the at least one tenon and the pressure plate. An expansion device as described in claim 17, wherein the electronic device is adapted to press down the pressure plate and the at least one elastic member and push the at least one tenon to rotate relative to the adapter, so that the at least one tenon is disengaged from the at least one groove. As described in claim 17, the at least one tenon has a turning portion and a hook portion, the turning portion is pivoted to the adapter through a resistance shaft, and the hook portion is orthogonal to the turning portion and penetrates the pressure plate. The expansion device as described in claim 12 further includes a plurality of positioning blocks disposed on a top surface of the adapter, and the electronic device is disposed on the positioning blocks to electrically couple the base and the expansion base.

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