TWI784670B - Electronic device - Google Patents

Abstract

An electronic device having a casing, a circular frame and a display is provided in this disclosure. A panel is arranged at one side of the casing, a circular opening is defined on the panel, and a first fixing structure is arranged on an inner edge of the circular opening. The circular frame is arranged in the circular opening and rotatable so as to closes the round opening, a second fixing structure is arranged on an outer edge of the circular frame, and the second fixing structure is limited by the first fixing structure. The display is embedded in the circular frame and exposed on the panel, so that the display can be rotated according to various placements of the casing.

Description

electronic device

The invention relates to an electronic device, especially an electronic device capable of rotating a display on the electronic device according to different arrangement modes.

Today's small and medium-sized electronic devices such as uninterruptible power supplies, power supplies, network routers, network base stations, set-top boxes, and small computer hosts are mostly flat rectangular bodies, which can be flattened according to the setting space when used. Put or stand. Some small and medium-sized electronic devices are provided with a display to display status information of the electronic device, and the display can also cooperate with an operation interface for operating the electronic device. However, the display screen of the display cannot be rotated according to the placement direction of the electronic device. Therefore, in order to match the different placement directions of the electronic devices, a general electronic device adopts a square display, and the display can be installed according to the placement direction of the electronic device when installing the electronic device. However, not only is it inconvenient to disassemble the display, but the hole in the installation part of the display will expose the internal circuit when the display is removed, which may cause electric shock to the user, and based on the requirements of safety regulations, the design will be more complicated and the cost will be higher.

In view of this, the inventor of the present invention aimed at the above-mentioned prior art, devoted himself to research and combined with the application of theories, and tried his best to solve the above-mentioned problems, which became the goal of the inventor's improvement.

The invention provides an electronic device capable of rotating the display on it according to different placement modes without disassembling the display.

The invention provides an electronic device, which includes an outer box, a round frame and a display. One side of the outer box is provided with a panel and the outer box is provided with a plurality of side panels adjacent to the peripheral edge of the panel. The panel is provided with a circular opening, and the inner edge of the circular opening is provided with a first fixing structure. The round frame is rotatably arranged in the round opening and closes the round opening. A second fixing structure is provided on the outer edge of the round frame. The second fixing structure is slidably arranged with the round frame and limited by the first fixing structure. The display is embedded in the round frame and exposed on the panel. The outer box can be placed with one of the side panels as the bottom, and each side panel corresponds to a placement position when it is the bottom, and the round frame can be rotated so that the direction of the display corresponds to any placement position.

In the electronic device of the present invention, the round frame protrudes from the panel. An operation interface is arranged on the round frame. The outer box is a rectangular body and the panel is rectangular.

In the electronic device of the present invention, the first fixing structure includes a barb sliding tenon, the second fixing structure includes an arc groove concentrically arranged with the circular frame, and the barb sliding tenon is engaged with the arc groove. The second fixing structure includes a barb sliding tenon, the first fixing structure includes an arc groove concentrically arranged with the circular opening, and the barb sliding tenon is engaged with the arc groove. Alternatively, the first fixing structure includes a barb sliding tenon and the second fixing structure correspondingly includes an arc groove concentrically arranged with the circular frame, the second fixing structure includes another barb sliding tenon and the first fixing structure Correspondingly, it includes another arc groove arranged concentrically with the circular opening, and each of the barbed sliding tenons is engaged with each of the corresponding arc grooves.

In the electronic device of the present invention, the inner edge of the round opening is provided with a first positioning structure, and the outer edge of the round frame is provided with a second positioning structure, and the round frame can be rotated relative to the round opening to a plurality of predetermined positions corresponding to the placement positions. In one of them, when the circular frame is at any predetermined position, the first positioning structure and the second positioning structure stop each other along the circumferential direction of the circular opening. When the circle frame is at one of the predetermined positions, the The first positioning structure and the second positioning structure are interlocked together along the circumferential direction of the circular opening. When the circular frame is at any predetermined position, the first positioning structure and the second positioning structure are interlocked along a direction parallel to the central axis of the circular opening. The first positioning structure includes a spherical tenon, and the second positioning structure includes a positioning hole for fastening the spherical tenon; or the second positioning structure includes a spherical tenon, and the first positioning structure includes a hole for fastening the spherical tenon positioning hole.

In the electronic device of the present invention, the circular frame can be rotated from any predetermined position by an angle that is a multiple of 90 degrees to reach another predetermined position.

In the electronic device of the present invention, the first positioning structure and the second positioning structure respectively include a stopper. When the circular frame is located at one of the predetermined positions, the pair of stoppers abut against each other and mutually unidirectionally in the circumferential direction of the circular opening. stop.

In the electronic device of the present invention, the display is rotatably arranged in the circular opening on the outer box through the circular frame, so the display can be rotated according to different placement modes of the outer box for user's convenience.

100: outer box

101: round opening

110: panel

111, 112, 113, 114: side panels

120: The first fixed structure

121: arc groove

122: barbed tenon

130: The first positioning structure

131: spherical tenon

132: block

133: button slot

133a: Neck opening

200: round frame

220: Second fixed structure

221: barbed tenon

222: arc groove

230: The second positioning structure

231: positioning hole

232: block

233: cylinder

301: sub circuit board

310: Display

320: electrical connector

330: Operation interface

FIG. 1 is a three-dimensional schematic diagram of an electronic device in one of the placement positions according to the first embodiment of the present invention.

2 and 3 are three-dimensional exploded schematic diagrams of the electronic device according to the first embodiment of the present invention.

Fig. 4 is a schematic diagram of the round frame at one of the predetermined positions in the first embodiment of the present invention.

Fig. 5 is a schematic diagram of another predetermined position of the circle frame in the first embodiment of the present invention.

FIG. 6 is a three-dimensional schematic view of the electronic device in another placement position according to the first embodiment of the present invention.

7 and 8 are three-dimensional exploded schematic diagrams of the electronic device according to the second embodiment of the present invention.

Fig. 9 is a schematic diagram of the round frame at one of the predetermined positions in the second embodiment of the present invention.

Fig. 10 is a schematic diagram of another predetermined position of the round frame in the second embodiment of the present invention.

11 and 12 are three-dimensional exploded schematic diagrams of the electronic device according to the third embodiment of the present invention.

Fig. 13 is a schematic diagram of the round frame at one of the predetermined positions in the third embodiment of the present invention.

Fig. 14 is a schematic diagram of another predetermined position of the round frame in the third embodiment of the present invention.

Referring to FIGS. 1 to 6 , the first embodiment of the present invention provides an electronic device, which includes an outer box 100 , a round frame 200 and a display 310 .

The outer box 100 is rectangular, and one side of the outer box 100 is provided with a panel 110 and the panel 110 is rectangular. The outer box 100 is provided with a plurality of side panels 111 / 112 adjacent to the panel 100 , and the outer box 100 can be placed in one of the plurality of corresponding placement positions with one of the side panels 111 / 112 . In this embodiment, the outer box 100 has two side panels 111 / 112 serving as the bottom, which respectively correspond to two placement positions. Therefore, the outer box 100 can be placed flat on the first placement position with the first side plate 111 as the bottom as shown in Figure 1, and the outer box 100 can also stand in the second placement position with the second side plate 112 as the base as shown in FIG. 6 . A circular opening 101 is disposed on the panel 110 , and a first fixing structure 120 is disposed on an inner edge of the circular opening 101 .

Referring to Fig. 2 to Fig. 4, the round frame 200 can be a ring body, a disc body or a cylinder, the outer contour of the round frame 200 matches the inner contour of the round opening 101, and the round frame 200 is rotatably arranged in the round opening 101 and close the circular opening 101. In this embodiment, the round frame 200 preferably protrudes from the panel 110 so that the user can rotate the round frame 200, but the present invention is not limited thereto, for example, the round frame 200 can also be flush with the panel 110 or be inserted into the round opening 101 inside. The outer edge of the round frame 200 is provided with a second fixing structure 220, the second fixing structure 220 is corresponding to the first fixing structure 120 and distributed in the outer ring of the round frame 200 in a ring shape, and the second fixing structure 220 is accompanied by a circle The frame 200 is slidably set and limited in the first fixing structure 120, so that the round frame 200 is limited to the round opening 101 of the panel 110 of the outer box 100, and the second fixing structure 220 through the circumference of the round frame 200 is fixed on the first fixing structure 120. The structure 120 slides relatively along the circumferential direction, and the circular frame 200 can rotate relative to the circular opening 101 . In this embodiment, the second fixing structure 220 is a circular ring-shaped outline formed by the first fixing structure 120 being annularly distributed on the outer periphery of the circular frame 200 , but the present invention is not limited thereto.

The specific structures of the first fixing structure 120 and the second fixing structure 220 are described in detail below. In this embodiment, the first fixing structure 120 includes a barbed tenon 122 , and the second fixing structure 220 includes an arc groove 222 arranged concentrically with the round frame 200 , and the barb tenon 122 is snapped into the arc groove 222 Inside. When the round frame 200 rotates in the round opening 101 , the barb slide tenon 122 can slide in the arc groove 222 without interfering with the rotation of the round frame 200 .

1 to 2, the display 310 is embedded in the round frame 200 and exposed on the panel 110. The display 310 is preferably electrically connected to the electronic device through an electrical connector 320 for plugging in a cable (not shown). The motherboard (not shown) to display the relevant information of the state of the electronic device, and the round frame 200 is provided with a power An operating interface 330 is permanently connected to the motherboard for the user to operate the electronic device. The display 310 , the electrical connector 320 and the operation interface 330 are preferably disposed on the same sub-circuit board 301 . The present invention does not limit the form of the operation interface 330 , for example, the operation interface 330 may be a physical button or a touch interface integrated in the display 310 .

Referring to FIGS. 2 to 4 , in order to limit the rotation of the circular frame 200 , a first positioning structure 130 is provided on the inner edge of the circular opening 101 , and a second positioning structure 230 is correspondingly provided on the outer edge of the circular frame 200 . The round frame 200 can rotate to one of a plurality of predetermined positions relative to the round opening 101 , and the round frame 200 preferably rotates from any predetermined position by an angle that is a multiple of 90 degrees to reach another predetermined position. When the circular frame 200 is at any predetermined position, both the first positioning structure 130 and the second positioning structure 230 can stop each other along the circumferential direction of the circular opening 101 to prevent the circular frame 200 from displacing unexpectedly.

The first positioning structure 130 and the second positioning structure 230 limit the circular frame 200 relative to the circular opening 101 in the first predetermined position as shown in FIGS. 1 to 4 and the second as shown in FIGS. 5 to 6 Rotate between predetermined positions. As shown in Figure 1, when the outer box 100 is placed in a horizontal state with the first side plate 111 as the bottom, the round frame 200 can be rotated to the corresponding first predetermined position, so that the operator can face up to the display 310 and as shown in FIG. 6 , when the outer box 100 is placed in an upright state through the second side plate 112 at the bottom, the round frame 200 can be rotated to a second predetermined position so that the operator can face the display 310 .

When the outer box 100 is rotated and converted between multiple horizontal and vertical placement positions, the rotation angle is a multiple of 90 degrees. In the foregoing embodiments, the two side panels 111 / 112 are adjacent to each other and arranged perpendicular to each other, and the rotation angle between the two predetermined positions that the round frame 200 can rotate to reach is corresponding to 90 degrees. However, the present invention does not limit the rotation angle between the predetermined positions. For example, the outer box 100 can also select two mutually parallel side plates 111/113 (or 112/114) as the bottom, and the round frame 200 can be rotated to reach the two predetermined positions. The rotation angle between the corresponding configurations is 180 degrees. Furthermore, the present invention does not limit the number of predetermined positions. For example, the outer box 100 can also select three consecutive adjacent side panels 111/112/113 as the bottom, and the round frame 200 can be rotated to reach the three corresponding predetermined positions. , the rotation angle between adjacent predetermined positions is correspondingly configured to be 90 degrees.

In the electronic device of the present invention, the first positioning structure 130 and the second positioning structure 230 may respectively include a stopper 132/232, and when the round frame 200 is located at a predetermined position at the end of the rotation stroke, the pair of stoppers 132/232 will abut against each other. Relying on the one-way mutual stop in the circumferential direction of the circular opening 101 to prevent the circular frame 200 from rotating out of its predetermined stroke, causing the cable to be excessively twisted and damaged.

Further, the first positioning structure 130 may include a spherical tenon 131 , and the second positioning structure 230 includes a positioning hole 231 for buckling the spherical tenon 131 . When the round frame 200 is at any predetermined position within its rotation stroke, the first positioning structure 130 and the second positioning structure 230 are positioned by snapping the ball-shaped tenon 131 into the positioning hole 231 in a direction parallel to the central axis of the circular opening 101 Circular frame 200 to avoid unintended rotation. The above-mentioned spherical tenon 131 and the positioning hole 231 can be interchanged, that is, the second positioning structure 230 includes the spherical tenon 131 , and the first positioning structure 130 includes the positioning hole 231 for fastening the spherical tenon 131 . According to the configuration of the predetermined position, a plurality of matching spherical tenons 131 or a plurality of positioning holes 231 can be provided. The function of the spherical tenon 131 is that when the user applies sufficient rotational force to the round frame 200 , the spherical tenon 131 can slip off from the fastened positioning hole 231 to allow the round frame 200 to rotate.

The second embodiment of the present invention provides an electronic device, which is as large as the first embodiment shown in FIG. 1 , including an outer box 100 , a round frame 200 and a display 310 .

The outer box 100 is rectangular, and one side of the outer box 100 is provided with a panel 110 and the panel 110 is rectangular. A circular opening 101 is disposed on the panel 110 , and a first fixing structure 120 is disposed on an inner edge of the circular opening 101 .

Referring to Fig. 7 to Fig. 9, the round frame 200 can be a ring body, a disk body or a cylinder body, the outer contour of the round frame 200 matches the inner contour of the round opening 101, and the round frame 200 is rotatably arranged in the round opening 101 and close the circular opening 101. In this embodiment, the round frame 200 preferably protrudes from the panel 110 so that the user can rotate the round frame 200, but the present invention is not limited thereto, for example, the round frame 200 can also be flush with the panel 110 or be inserted into the round opening 101 inside. A second fixing structure 220 is disposed on the outer edge of the round frame 200 , and the second fixing structure 220 is fastened to the first fixing structure 120 to fix the round frame 200 to the outer box 100 .

The specific structures of the first fixing structure 120 and the second fixing structure 220 are described in detail below. In this embodiment, the first fixing structure 120 includes a barbed tenon 122 ; the second fixing structure 220 correspondingly includes an arc groove 222 concentric with the round frame 200 . The second fixing structure 220 also includes a barb sliding tenon 221, in this embodiment, the barb sliding tenon 221 extends in an arc shape; the first fixing structure 120 also correspondingly includes an arc groove arranged concentrically with the circular opening 101 121. Each barb tenon 122 / 221 is buckled with each corresponding arc groove 222 / 121 to fix the round frame 200 to the outer box 100 . When the round frame 200 rotates in the round opening 101 , each barb tenon 122 / 221 can slide in the corresponding arc groove 222 / 121 without interfering with the rotation of the round frame 200 .

The display 310 is embedded in the round frame 200 and exposed on the panel 110. The display 310 is preferably electrically connected to the main board of the electronic device through the electrical connector 320 for plugging in a cable to display relevant information about the status of the electronic device. Moreover, an operation interface 330 electrically connected to the motherboard is provided on the round frame 200 for the user to operate the electronic device. The display 310 , the electrical connector 320 and the operation interface 330 can preferably be arranged on the sub-circuit board 301 in FIG. 1 . The present invention does not limit the form of the operation interface 330 , for example, the operation interface 330 may be a physical button or a touch interface integrated in the display 310 .

In order to limit the rotation of the circular frame 200 , a first positioning structure 130 is provided on the inner edge of the circular opening 101 , and a second positioning structure 230 is correspondingly provided on the outer edge of the circular frame 200 . According to the location of the outer box 100 The circular frame 200 can be rotated to one of a plurality of predetermined positions corresponding to the circular opening 101, and the circular frame 200 is preferably rotated from any predetermined position by an angle that is a multiple of 90 degrees to reach another predetermined position. In this embodiment, one of the predetermined positions is shown in FIGS. 7 to 9 , and the other predetermined position is shown in FIG. 10 . 9 and 10, when the round frame 200 is located at any predetermined position, the first positioning structure 130 and the second positioning structure 230 can stop each other along the circumferential direction of the circular opening 101 to prevent the round frame 200 from displacing unexpectedly .

9 and 10, the electronic device of the present invention, its first positioning structure 130 and second positioning structure 230 can respectively include a stopper 132/232, when the round frame 200 is located at the predetermined position at the end of the rotation stroke, the pair The stoppers 132/232 abut against each other and stop each other in one direction in the circumferential direction of the circular opening 101 to prevent the circular frame 200 from rotating out of its predetermined stroke, causing the cable to be excessively twisted and damaged.

Further, the first positioning structure 130 may include a spherical tenon 131 , and the second positioning structure 230 includes a positioning hole 231 for buckling the spherical tenon 131 . When the round frame 200 is at any predetermined position within its rotation stroke, the first positioning structure 130 and the second positioning structure 230 are positioned by snapping the ball-shaped tenon 131 into the positioning hole 231 in a direction parallel to the central axis of the circular opening 101 Circular frame 200 to avoid unintended rotation. The above-mentioned spherical tenon 131 and the positioning hole 231 can be interchanged, that is, the second positioning structure 230 includes the spherical tenon 131 , and the first positioning structure 130 includes the positioning hole 231 for fastening the spherical tenon 131 . According to the configuration of the predetermined position, a plurality of matching spherical tenons 131 or a plurality of positioning holes 231 can be provided. The function of the spherical tenon 131 is that when the user applies sufficient rotational force to the round frame 200 , the spherical tenon 131 has an arc surface and can be slipped from the positioning hole 231 to which it is fastened so as to allow the round frame 200 to rotate.

The third embodiment of the present invention provides an electronic device, which is as large as that shown in FIG. 1 of the first embodiment, including an outer box 100 , a round frame 200 and a display 310 .

Referring to FIG. 11 to FIG. 14 , the outer box 100 is rectangular, and one side of the outer box 100 is provided with a panel 110 and the panel 110 is rectangular. A circular opening 101 is disposed on the panel 110 , and a first fixing structure 120 is disposed on an inner edge of the circular opening 101 .

The circular frame 200 can be a torus, a disk or a cylinder. The outer contour of the circular frame 200 matches the inner contour of the circular opening 101. The circular frame 200 is rotatably arranged in the circular opening 101 and closes the circular opening 101. . In this embodiment, the round frame 200 preferably protrudes from the panel 110 so that the user can rotate the round frame 200, but the present invention is not limited thereto, for example, the round frame 200 can also be flush with the panel 110 or be inserted into the round opening 101 inside. A second fixing structure 220 is disposed on the outer edge of the round frame 200 , and the second fixing structure 220 is fastened to the first fixing structure 120 to fix the round frame 200 to the outer box 100 .

The specific structures of the first fixing structure 120 and the second fixing structure 220 are described in detail below. In this embodiment, the second fixing structure 220 includes a barb sliding tenon 221, the first fixing structure 120 includes an arc groove 121 concentrically arranged with the circular opening 101, and the barb sliding tenon 221 is fastened to the corresponding arc groove 121 And the round frame 200 is fixed on the outer box 100 . When the round frame 200 rotates in the round opening 101 , the barbed tenon 221 can slide in the corresponding arc groove 121 without interfering with the rotation of the round frame 200 .

The display 310 is embedded in the round frame 200 and exposed on the panel 110. The display 310 is preferably electrically connected to the main board of the electronic device through the electrical connector 320 for plugging in a cable to display relevant information about the status of the electronic device. Moreover, an operation interface 330 electrically connected to the motherboard is provided on the round frame 200 for the user to operate the electronic device. The display 310 , the electrical connector 320 and the operation interface 330 can preferably be arranged on the sub-circuit board 301 in FIG. 1 . The present invention does not limit the form of the operation interface 330 , for example, the operation interface 330 may be a physical button or a touch interface integrated in the display 310 .

In order to limit the rotation of the circular frame 200, the inner edge of the circular opening 101 is provided with a first positioning structure 130, and the outer edge of the circular frame 200 is provided with a second positioning structure 230, and the circular frame 200 can be positioned relative to the circular opening. The port 101 is rotated to one of a plurality of predetermined positions, and the circular frame 200 is preferably rotated from any predetermined position by an angle that is a multiple of 90 degrees to reach another predetermined position. When the circular frame 200 is at any predetermined position, both the first positioning structure 130 and the second positioning structure 230 can stop each other along the circumferential direction of the circular opening 101 to prevent the circular frame 200 from displacing unexpectedly.

In this embodiment, the two ends of the rotation stroke of the circular frame 200 respectively have a predetermined position, when the circular frame 200 is located at any predetermined position, the first positioning structure 130 and the second positioning structure 230 can be positioned along the circumference of the circular opening 101 The directions interlock. In this embodiment, the second fixing structure 220 and the second positioning structure 230 are jointly arranged on the same rod body extending from the round frame 200, and the barb sliding tenon 221 of the second fixing structure 220 is arranged at the end of the rod body. The hook and slide tenon 221 is preferably a ball head to facilitate buckling into the arc groove 121 . Specifically, the first positioning structure 130 includes a buckle groove 133, and each buckle groove 133 has at least one neck opening 133a. In this embodiment, two button grooves 133 are configured corresponding to the two predetermined positions shown in Figure 13 and Figure 14, and the two button grooves 133 communicate with the two ends of the arc groove 121 through the neck openings 133a respectively, and the second The second positioning structure 230 includes a cylinder 233 penetrating through the arc groove 121 and used for buckling the buckle groove 133 . The cylinder 233 is formed in the middle section of the rod body, and it can move along the arc groove 121 as the round frame 200 rotates. When the round frame 200 is in any predetermined position, the cylinder 233 can be forced into the neck opening 133a of the corresponding buckle groove 133 The round frame 200 is positioned by being fastened in the buckle groove 133 . When the user applies sufficient rotational force to the round frame 200 , the cylinder 233 has an arc surface and can slip out of the fastening groove 133 to allow the round frame 200 to rotate. In this example, additional buckle grooves 133 may be added in the middle of the arc grooves 121, and the angles between the adjacent buckle grooves 133 relative to the center of the circular opening 101 are multiples of 90 degrees.

In the electronic device of the present invention, the display 310 is rotatably disposed in the circular opening 101 of the outer box 100 through the circular frame 200 , so the display 310 can be rotated according to different placements of the outer box 100 for user's convenience. The electronic device of the present invention can be rotated without disassembling the display 310 Rotating the display 310 prevents the user from getting an electric shock when touching the exposed parts, and the display 310 does not need to be limited to a square.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Other equivalent changes using the patent spirit of the present invention shall all fall within the patent scope of the present invention.

100: outer box

101: round opening

110: panel

120: The first fixed structure

121: arc groove

130: The first positioning structure

132: block

200: round frame

220: Second fixed structure

221: barbed tenon

230: The second positioning structure

231: positioning hole

232: block

301: sub circuit board

310: Display

330: Operation interface

Claims (11)

An electronic device, comprising: an outer box, one side of the outer box is provided with a panel and the outer box is provided with a plurality of side panels adjacent to the periphery of the panel, the panel is provided with a circular opening, and the inner edge of the circular opening is provided with a The first fixed structure; a circular frame, which is rotatably arranged in the circular opening and closes the circular opening. A second fixed structure is provided on the outer edge of the circular frame, and the second fixed structure is slidably arranged with the circular frame and is fixed. The first fixing structure is limited; and a display is embedded in the round frame and exposed on the panel, wherein the outer box can be placed with one of the side panels as the bottom, and each of the side panels corresponds to the bottom. A placement position, and the round frame can be rotated so that the direction of the display corresponds to any placement position, wherein the inner edge of the round opening is provided with a first positioning structure, and the outer edge of the round frame is provided with a second positioning structure. The frame can be rotated relative to the circular opening to one of a plurality of predetermined positions corresponding to the placement positions. When the circular frame is at any of the predetermined positions, the first positioning structure and the second positioning structure are positioned along the circular opening. The circumferential direction stops each other; wherein when the circular frame is located at one of the predetermined positions, the first positioning structure and the second positioning structure are interlocked with each other along the circumferential direction of the circular opening, and the first positioning structure and the second positioning structure The two positioning structures are interlocked in a direction parallel to the central axis of the circular opening; one of the first positioning structure and the second positioning structure includes a spherical tenon, and the first positioning structure and the second positioning structure The other one of them includes a positioning hole for fastening the spherical tenon. The electronic device as claimed in claim 1, wherein the round frame protrudes from the panel. The electronic device as claimed in claim 1, wherein an operation interface is disposed on the round frame. The electronic device as claimed in claim 1, wherein the outer box is rectangular and the panel is rectangular. The electronic device according to claim 1, wherein the first fixing structure includes a barb sliding tenon, the second fixing structure includes an arc groove concentrically arranged with the circular frame, and the barb sliding tenon is engaged with the arc groove. The electronic device according to claim 1, wherein the second fixing structure includes a barb sliding tenon, the first fixing structure includes an arc groove concentrically arranged with the circular opening, and the barb sliding tenon is engaged with the arc groove. The electronic device as claimed in item 1, wherein the first fixing structure includes a barb slide tenon and the second fixing structure correspondingly includes an arc groove concentrically arranged with the circular frame, and the second fixing structure includes another The barb slide tenons and the first fixing structure correspondingly include another arc groove concentrically arranged with the circular opening, and each of the barb slide tenons is engaged with each of the corresponding arc grooves respectively. The electronic device according to claim 1, wherein the first positioning structure includes a spherical tenon, and the second positioning structure includes a positioning hole for buckling the spherical tenon. The electronic device according to claim 1, wherein the second positioning structure includes a spherical tenon, and the first positioning structure includes a positioning hole for buckling the spherical tenon. The electronic device as claimed in claim 1, wherein the circular frame can be rotated from any one of the predetermined positions by an angle that is a multiple of 90 degrees to reach another predetermined position. The electronic device as claimed in item 1, wherein the first positioning structure and the second positioning structure respectively include a stopper, and when the round frame is located at one of the predetermined positions, the pair of stoppers abut against each other and at the One-way mutual stop in the circumferential direction of the round opening.

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