TWI744201B - Portable electronic device - Google Patents

Abstract

A portable electronic device comprises a machine body and a support module. The support module includes a fixing seat, a bracket and a locking mechanism. The fixing seat has a base plate with a guiding slot and a plurality of pivoting walls. The bracket has a frame body and a pivot shaft that is fixed and connected to the frame body, and the pivot shaft passes through the pivot walls and is rotatable around the self-axis. The locking mechanism includes a locking element, an operating element and a resilient element which are provided on the pivot shaft. The locking element is rotatable with the pivot shaft, and has a first locking portion and a second locking portion spaced apart from the first locking portion along the rotating direction. The operating element is non-rotatable, but can be moved along the pivot shaft between a locked position and an unlocked position. When the operating element stays at the locked position, a blocking portion of the operating element is engaged to one of the first and second locking portions so as to position the frame body in a folded position or a support position.

Description

Portable electronic device

The invention relates to a portable electronic device, in particular to a portable electronic device with a supporting module.

Generally, large-size displays, especially touch-sensitive displays, usually need to be supported by a support module to support the display on the desktop to facilitate users to watch and operate. In addition, the display also needs to be carried and moved to different places for use. In particular, touch-sensitive displays with computer functions used in certain special work areas often need to be moved to different work places for use.

Since the support module is generally assembled in the back shell of the display, if the support module has a base, it is likely to be too large, which is not conducive to carrying and moving; if the support module is in the form of a bracket with a torsion-type positioning hinge, it can be folded and easily carried. However, the supporting force of the torsion-type positioning hinge is relatively weak.

Therefore, one objective of the present invention is to provide a portable electronic device that can solve the aforementioned problems.

Therefore, in some embodiments, the portable electronic device of the present invention includes a body and a supporting module. The body includes a display screen and a back shell located on the opposite side of the display screen. The supporting module includes a fixing seat, a bracket and a locking mechanism. The fixing seat has a base plate arranged on the back shell, and a plurality of pivotal walls arranged at intervals along a first direction on the base plate and perpendicular to the base plate, the base plate is provided with a base plate located between two adjacent pivotal walls A guide groove extending along the first direction. The bracket has a bracket body that can be held by hand and a pivot shaft connected to the bracket body. The pivot is linked and can pivot relative to the base plate with the pivot as an axis. The locking mechanism has a detent member, an operating member, and an elastic reset member sleeved on the pivot and located between two adjacent pivotal walls. The detent member rotates with the pivot and has a rotation direction A first detent portion and a second detent portion are arranged at intervals, the position of the operating member corresponds to the guide groove, and has a sleeve portion slidable along the pivot axis, and a sleeve portion connected to the sleeve portion for pulling A movable flip part, a positioning post connected to the sleeve part and slidably limited to the guide groove, and a positioning post connected to the sleeve part and matched with the first locking part and the second locking part The locking portion, the operating member does not rotate with the pivot and can move between a locked position and a unlocked position, the locking portion and the first latching portion or the second latching portion in the locked position The locking part is not locked with the first locking part or the second locking part when in the unlocking position, and the elastic resetting member provides a bias for positioning the operating member at the locking position. When the frame is located in a folded position close to the back shell and can be carried, the position of the first latching portion is opposite to the locking portion and is mutually latched and fixed with the locking portion, so that the frame is positioned at The folded position. When the frame body is located at a supporting position at an angle with the back shell, the position of the second locking portion is opposite to the locking portion and is mutually locked and fixed with the locking portion, so that the frame body is positioned on the support Location.

In some embodiments, the support module further includes a driving and unlocking mechanism, the driving and unlocking mechanism having a first cam member and a second cam member sleeved on the pivot shaft and located between the other two adjacent pivotal walls. A cam member and an elastic driving member. The first cam member is fixed to the fixing base and has a first cam surface facing the second cam member. The second cam member rotates together with the pivot and can follow the pivot Sliding and having a second cam surface matched with the first cam surface. When the second cam surface abuts against the first cam surface, the second cam member drives the pivot to rotate to make the first latch At a position where the locking portion is offset from each other, the elastic driving member elastically presses against the second cam member to provide a pushing force for pushing the second cam member to make the second cam surface fully abut against the first cam surface.

In some embodiments, a total of four pivotal walls are provided on the base plate, and the pivot includes a first shaft and a second shaft. The first shaft passes through two adjacent pivots. The wall is connected and the locking mechanism is provided, and the second shaft rod penetrates through the other two adjacent pivotal walls and is provided for the drive unlocking mechanism to be provided.

In some embodiments, the first cam member is fixed to an adjacent pivotal wall, the pivotal wall is provided with two positioning holes, and the first cam member is formed with two locating holes on opposite sides of the first cam surface. A positioning block which is respectively clamped in the positioning holes.

In some embodiments, the drive unlocking mechanism further has a first washer set on a side of the second cam member opposite to the second cam surface, and a first spacer set on the pivot and abuts against The second gasket of the pivotal wall adjacent to the second gasket, the elastic driving member is a compression spring, and both ends abut against the first gasket and the second gasket respectively.

In some embodiments, the frame has two support rods spaced apart from each other and respectively connected to both ends of the pivot, and a support rod connected to the ends of the support rods for carrying and supporting on a bearing surface Handle department.

In some embodiments, each pole portion has a connecting head connected to the pivot, the connecting head is in the shape of a hollow cylinder and the inner peripheral surface is recessed with a plurality of grooves spaced in the circumferential direction, and the pivot It comprises two linkage members located on the opposite outer sides of the pivoting walls to respectively connect the connecting heads of the support rod parts. Each linkage member has a ring body and a plurality of clamping blocks protruding from the outer periphery of the ring at intervals, The clamping blocks are matched with the concave and convex grooves of the corresponding connecting heads, and can link the frame body to make the frame body and the pivot rotate together.

In some embodiments, the sleeve portion is cylindrical and has a first end surface facing the latch, and the locking portion is composed of two protrusions protruding from the first end surface along the first direction , The protrusions are respectively located on both sides of the pivot and on a diameter, the latch is in the shape of a circular plate and has an abutment surface that abuts against the first end surface, and the first latch consists of two The second latching portion is formed by a first slot that is recessed from the abutting surface and respectively accommodates the two protrusions of the locking portion, and the second latching portion is composed of two recessed from the abutting surface and respectively accommodates the locking portion Two protruding blocks are formed by the second card slot.

In some embodiments, the sleeve portion further has a second end surface opposite to the first end surface, and a positioning groove is formed on the second end surface to accommodate the elastic return member, the elastic return member being a compression spring and The two ends respectively abut against the sleeve part and the pivotal wall adjacent to the sleeve part.

The present invention has at least the following effects: by positioning the frame in the folded position and the supporting position by the locking mechanism, not only can the user conveniently hold the body in the folded position to move the body, but also in the supporting position. The machine body can be stably supported in the position, so that the user can watch the display screen conveniently.

Referring to FIGS. 1 to 3, an embodiment of the portable electronic device 100 of the present invention includes a body 1 and a supporting module 2.

The body 1 includes a display screen 11 and a back shell 12 located on the opposite side of the display screen 11. In this embodiment, the display screen 11 is a touch screen, and the body 1 is a computer.

The supporting module 2 includes a fixing base 3, a bracket 4, a locking mechanism 5 and a driving and unlocking mechanism 6.

4-7, the fixing seat 3 has a base plate 31 arranged on the back shell 12 (see FIG. 1), and a plurality of pivots arranged on the base plate 31 at intervals along a first direction D and perpendicular to the base plate 31 Connected to the wall 32. The base plate 31 is provided with a guiding groove 311 located between two adjacent pivotal walls 32 and extending along the first direction D. In this embodiment, the four corners of the base plate 31 are respectively provided with an assembly hole 312 for screws (not shown) to pass through, so as to assemble and fix the base plate 31 to the back shell 12, and the base plate 31 Removably assembled on the back shell 12, so that the support module 2 can be easily disassembled and assembled from the back shell 12, so that the body 1 can also be assembled on a carrier frame when the support module 2 is not assembled (Not shown) to increase the positioning and use of the body 1. In this embodiment, a total of four pivotal walls 32 are provided on the base plate 31. In the direction shown in FIG. The drive unlocking mechanism 6 is arranged between two adjacent pivotal walls 32, and the guide groove 311 is provided corresponding to the locking mechanism 5 and is located between the two adjacent pivotal walls 32 on the left side.

Referring to FIGS. 3 to 6, the bracket 4 has a frame 41 that can be held by hand and a pivot 42 connected to the frame 41. The pivot shaft 42 passes through the pivotal walls 32 along the first direction D and can rotate around its own axis. The frame 41 is linked with the pivot 42 and can pivot relative to the base plate 31 with the pivot 42 as an axis.

In this embodiment, the frame body 41 has two support rod portions 411 spaced apart from each other and respectively connected to both ends of the pivot shaft 42, and a support rod portion 411 connected to the ends of the support rod portions 411 for carrying and supporting on a The handle portion 412 of the bearing surface A (see FIG. 11). Each rod portion 411 has a connecting head 411a connected to the pivot 42. The connecting head 411a is in the shape of a hollow cylinder and is recessed on the inner peripheral surface with a plurality of grooves 411b spaced in the circumferential direction, that is, each recess The slot 411b extends in a direction parallel to the pivot 42.

In this embodiment, the pivot 42 includes a first shaft 43, a second shaft 44, two linkage members 45, two C-shaped baffles 46, and two nuts 47. The first shaft 43 penetrates through two of the adjacent pivotal walls 32, the second shaft 44 penetrates through the other two adjacent pivotal walls 32, and the pivotal walls 32 are provided with The circular hole 321 allows the first shaft 43 and the second shaft 44 to pass through, and enables the first shaft 43 and the second shaft 44 to rotate in the hole 321. The linkage members 45 are respectively disposed on the first shaft 43 and the second shaft 44 and located at the opposite outer sides of the pivoting walls 32 to connect the connecting heads 411a of the supporting rod portions 411, respectively. Each link member 45 has a ring body 451 and a plurality of blocking blocks 452 protruding from the outer periphery of the ring body 451 at intervals. The ring body 451 is provided with a non-circular perforation so as to be sleeved on the section of the first shaft 43 (second shaft 44) that matches the cross-sectional shape, and can be connected to the first shaft 43 (second shaft 44). Rotate together. The blocks 452 are matched with the concave and convex grooves 411b of the corresponding connector 411a (see FIG. 10), and can link the frame 41 to make the frame 41 and the pivot 42 rotate together.

The opposite inner ends of the first shaft 43 and the second shaft 44 are each provided with a ring groove 421 to respectively hold the C-shaped baffle pieces 46, and the C-shaped baffle pieces 46 are blocked by the corresponding pivots. The connecting wall 32 prevents the first shaft 43 and the second shaft 44 from escaping from the pivoting walls 32.

The first shaft 43 has a first connecting section 431 and a first mounting section 432 between the first connecting section 431 and the ring groove 421, and the first connecting section 431 is used for one of the linkage members 45 It is provided with a first threaded portion 433 for one of the nuts 47 to be screwed to fix the corresponding connector 411a. The first installation section 432 is provided for the locking mechanism 5. The second shaft 44 has a second connecting section 441 and a second mounting section 442 between the second connecting section 441 and the ring groove 421, and the second connecting section 441 is used for the other connecting member. 45 is provided, and has a second threaded portion 443 for the other nut 47 to be screwed to fix the corresponding connector 411a. The second installation section 442 is provided for the drive unlocking mechanism 6.

Referring to FIGS. 4 to 7, the locking mechanism 5 has a latch 51, an operating member 52 and an elastic reset member 53 sleeved on the pivot shaft 42 and located between two adjacent pivotal walls 32.

The locking member 51 rotates together with the pivot 42 and has a first locking portion 511 and a second locking portion 512 arranged at intervals along the rotation direction. The operating member 52 is positioned corresponding to the guiding groove 311, and has a sleeve portion 521 that can slide along the pivot shaft 42, a pull portion 522 connected to the sleeve portion 521 for pulling, and a sleeve portion 522 connected to the sleeve. The portion 521 is slidably limited to the positioning post 523 of the guiding groove 311 and a locking portion 524 connected to the sleeve portion 521 and matched with the first locking portion 511 and the second locking portion 512. The operating member 52 is restricted by the positioning post 523 without rotating with the pivot 42 and can be moved along the pivot 42 in a locked position (as shown in Figures 2 and 4) and a unlocked position (as shown in Figure 8). 9), when in the locked position, the locking portion 524 is locked with the first locking portion 511 or the second locking portion 512. When in the unlocking position, the locking portion 524 is not locked. It is latched with the first latching portion 511 or the second latching portion 512 with each other. That is to say, in the locked position, the latch 51 and the operating member 52 are relatively fixed and cannot be rotated, which also prevents the pivot 42 from rotating, thereby restricting the frame 41 (see FIG. 8) from pivoting. Moreover, the positioning post 523 connects the sleeve portion 521 and the base plate 31, and can provide the sleeve portion 521 with a supporting force, so that the locking portion 524 has sufficient strength to stop the latch 51 from rotating; In the locked position, the latch 51 is separated from the operating member 52 and can rotate together with the pivot 42 so that the frame 41 can pivot. The user can apply force to the pulling portion 522 to move the operating member 52 to move the operating member 52 from the locked position to the unlocked position. The elastic reset member 53 provides a bias for positioning the operating member 52 in the locked position.

As shown in FIGS. 4 and 10, when the frame body 41 is located in a folded position close to the back shell 12 and can be carried, the position of the first latching portion 511 is opposite to the locking portion 524 and to the The locking parts 524 are locked and fixed to each other, so that the frame body 41 is positioned at the folded position. In this embodiment, when the frame 41 is in the folded position, the supporting rod portions 411 are substantially parallel to the base plate 31, and the handle portion 412 protrudes above the body 1 to facilitate the user to hold Exert force.

As shown in FIGS. 11 and 12, when the frame 41 is located at a supporting position at an angle with the back shell 12, the position of the second latching portion 512 is opposite to the locking portion 524 and to the locking portion 524 is locked and fixed to each other, so that the frame body 41 is positioned at the supporting position. When the frame body 41 is at the supporting position, the handle portion 412 abuts against the bearing surface A to support the body 1 so that the body 1 is inclined at a certain angle with respect to the bearing surface A.

6 and 7, in this embodiment, the sleeve portion 521 is cylindrical and has a first end surface 521a facing the latch 51 and a second end surface opposite to the first end surface 521a 521b. The locking portion 524 is composed of two protrusions 524a extending along the first direction D and protruding from the first end surface 521a. The protrusions 524a are respectively located on two sides of the pivot 42 and on a diameter. The locking member 51 is in the shape of a circular plate and has an abutting surface 513 that abuts against the first end surface 521a. The first latching groove 511a of the two protrusions 524a of the portion 524 is formed, and the second latching portion 512 is composed of two second latches that are recessed from the abutting surface 513 and respectively accommodate the two protrusions 524a of the locking portion 524. The card slot 512a is formed. The positions of the first latching portion 511 and the second latching portion 512 are approximately 120 degrees apart in the rotation direction to match the pivoting angle of the frame 41. The sleeve portion 521 forms a positioning groove 521c on the second end surface 521b to accommodate the elastic reset member 53. The elastic reset member 53 is a compression spring and its two ends are respectively pressed against the sleeve portion 521 and adjacent pivots. The connecting wall 32 positions the elastic reset member 53 and the sleeve portion 521 relative to each other by the positioning groove 521c, so that the elastic reset member 53 can uniformly apply force to the sleeve portion 521.

Positioning the frame 41 in the folded position and the supporting position by the locking mechanism 5 not only allows the user to conveniently hold and move the body 1 in the folded position, but also can be stable in the supporting position The body 1 is supported to facilitate the user to view the display screen 11.

4 to 7, the drive unlocking mechanism 6 has a first cam member 61 and a second cam member 61 sleeved on the pivot shaft 42 (second mounting section 442) and located between the other two adjacent pivotal walls 32 The cam member 62 and an elastic driving member 63. The first cam member 61 is fixed to the fixing base 3 and has a first cam surface 611 facing the second cam member 62. The second cam member 62 rotates together with the pivot shaft 42, can slide along the pivot shaft 42, and has a second cam surface 621 that cooperates with the first cam surface 611. The elastic driving member 63 elastically presses against the second cam member 62 to provide a pushing force that pushes the second cam member 62 to make the second cam surface 621 fully abut against the first cam surface 611. In this embodiment, the first cam member 61 is fixed to the adjacent pivotal wall 32, and the pivotal wall 32 is provided with two positioning holes 322. The first cam member 61 is located on the first cam surface 611. Two positioning blocks 612 are formed on the opposite side to be respectively inserted into the positioning holes 322, so that the first cam member 61 is fixed to the pivot wall 32 and does not rotate with the pivot shaft 42. In this embodiment, the drive unlocking mechanism 6 also has a first washer 64 set on a side of the second cam member 62 opposite to the second cam surface 621, and a set on the pivot 42 And it abuts against the second gasket 65 of the pivotal wall 32 adjacent thereto. The elastic driving member 63 is a compression spring and both ends abut against the first gasket 64 and the second gasket 65 respectively.

9 and 10, when the frame 41 is in the folded position, the position of the locking portion 524 of the locking mechanism 5 is opposite to the first latching portion 511 in the first direction D, and the second A cam surface 611 is offset from the second cam surface 621 by a little distance, so that the first cam surface 611 and the second cam surface 621 do not fully abut against each other. When the user moves the operating member 52 to the unlocking position, the locking member 51 can rotate without being affected by the locking portion 524. At this time, referring to FIGS. 13 and 14, the second cam member 62 is The pushing of the elastic driving member 63 moves toward the first cam surface 611. During the movement of the second cam member 62, the second cam surface 621 moves and rotates relative to the first cam surface 611, and the second cam member 62 drives the pivot 42 to rotate until the second cam surface 621 abuts against the first cam surface 611 and stops rotating. When the second cam surface 621 and the first cam surface 611 fully abut against each other, the second cam member 62 drives the pivot shaft 42 to rotate to a position where the first locking portion 511 and the locking portion 524 are misaligned, The operating member 52 is positioned at the unlocking position and the frame 41 is automatically pivoted to a small angle relative to the folded position, that is, the frame 41 is automatically positioned at the initial unlocking position as shown in FIG. 14 for convenience The user pivots the frame 41 to the supporting position.

That is to say, when the frame 41 is locked in the folded position, the user pulls the operating member 52 to the unlocked position, the pivot 42 is slightly rotated and driven by the drive unlocking mechanism 6 The locking member 51 rotates to make the first locking portion 511 and the locking portion 524 misaligned, and the locking portion 524 abuts against the abutting surface 513 of the locking member 51. At this time, the operating member 52 acts on the card. The detent 51 does not produce a detent effect, so that the pivot 42 can rotate freely. That is, the frame body 41 can be pivoted when positioned at the initial unlocking position, which is convenient for the user to operate. When the user pivots the frame 41 from the initial unlocking position to the supporting position, the second latching portion 512 is opposed to the locking portion 524 (see FIG. 12), and the operating member 52 is affected by the elastic resetting member 53 acts to return to the locked position, so that the latch 51 is positioned and cannot be rotated, and at the same time, the frame 41 is fixed and cannot be pivoted. When the user wants to fold the frame 41, he first pulls the operating member 52 to the unlocking position, and then pushes the frame 41 to pivot upward. After the frame 41 is pivoted and activated, the pivot 42 will also be acted by the drive unlocking mechanism 6, that is, the second cam member 62 will also be driven by the elastic drive member 63 to move and rotate relative to the first cam surface 611 until the second cam surface 621 and the first cam surface 611 A cam surface 611 is fully abutted, which will drive the frame 41 back to the initial unlocking position. When the frame 41 is in the initial unlocking position, the user only needs to press the frame 41 and lean against the back shell 12 to drive the latch 51 to make the first latch 511 and the lock portion 524 face each other. When the first latching portion 511 is opposite to the locking portion 524, the operating member 52 is returned to the locked position by the elastic return member 53, so that the latching member 51 is positioned and cannot be rotated, and at the same time, The frame 41 is fixed and cannot be pivoted.

However, the above are only examples of the present invention. When the scope of implementation of the present invention cannot be limited by this, all simple equivalent changes and modifications made in accordance with the scope of the patent application of the present invention and the content of the patent specification still belong to This invention patent covers the scope.

100: Portable electronic device 1: body 11: Display 12: Back shell 2: Support module 3: fixed seat 31: substrate 311: guide slot 312: Assembly hole 32: pivot wall 321: Piercing 322: positioning hole 4: Bracket 41: Frame 411: Pole 411a: connector 411b: Groove 412: Handle 42: pivot 421: ring groove 43: The first shaft 431: first connection segment 432: The first installation section 433: first thread part 44: second shaft 441: second connection segment 442: Second installation section 443: second threaded part 45: Linkage 451: Ring 452: card block 46: C-shaped baffle 47: Nut 5: Locking mechanism 51: Cards 511: The first card switch 511a: The first card slot 512: The second card switch 512a: second card slot 513: abutment surface 52: operating parts 521: Sleeve 521a: the first end face 521b: second end face 521c: positioning slot 522: Flip part 523: positioning column 524: Locking part 524a: bump 53: Elastic reset piece 6: Drive the unlocking mechanism 61: The first cam piece 611: first cam surface 612: positioning block 62: The second cam piece 621: second cam surface 63: Elastic drive 64: The first gasket 65: second gasket A: Bearing surface D: First direction

Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: FIG. 1 is a perspective view of an embodiment of a portable electronic device of the present invention; Figure 2 is a rear view of the support module of this embodiment, in which an operating member of a locking mechanism is located in a locked position; Figure 3 is a three-dimensional exploded view of the support module; Figure 4 is a perspective view of the support module with a frame removed; Fig. 5 is a perspective view corresponding to Fig. 4 from another perspective; Figure 6 is a perspective exploded view corresponding to Figure 4; FIG. 7 is a perspective exploded view corresponding to FIG. 6 from another perspective; Figure 8 is a view similar to Figure 2 in which the operating member is in the unlocked position; Figure 9 is an incomplete side view illustrating that the operating member is in the unlocked position; Figure 10 is a side view illustrating that the frame is in a folded position; Figure 11 is a side view illustrating that the frame is in a supporting position; Figure 12 is an incomplete side view similar to Figure 9, illustrating that the second locking portion of a locking member is locked with the locking portion of the operating member when the frame is in the supporting position; Figure 13 is an incomplete side view similar to Figure 9 illustrating that the first cam surface and the second cam surface of a drive unlocking mechanism are fully abutted; and Fig. 14 is a side view illustrating that the frame is in the initial unlocking position.

2: Support module

3: fixed seat

4: Bracket

41: Frame

411: Pole

411a: connector

411b: Groove

412: Handle

42: pivot

5: Locking mechanism

51: Cards

52: operating parts

522: Flip part

6: Drive the unlocking mechanism

Claims (9)

A portable electronic device, including: A body, including a display screen and a back shell located on the opposite side of the display screen; and A support module, including A fixing seat having a base plate arranged on the back shell, and a plurality of pivoting walls arranged on the base plate at intervals along a first direction and perpendicular to the base plate, the base plate is provided between two adjacent pivoting walls And a guide groove extending along the first direction, A bracket having a bracket body that can be held by hand and a pivot connecting the bracket body. The pivot shaft passes through the pivotal walls along the first direction and can rotate around its own axis. The bracket body and The pivot is linked and can pivot relative to the base plate using the pivot as an axis, and A locking mechanism has a latch, an operating member, and an elastic reset piece sleeved on the pivot and located between two adjacent pivoting walls. The latch rotates with the pivot and has a rotation A first detent portion and a second detent portion are arranged at intervals in the direction, the position of the operating member corresponds to the guide groove, and has a sleeve portion slidable along the pivot, and a sleeve portion connected to the A flip part for flipping, a positioning post connected to the sleeve part and slidably limited to the guide groove, and a positioning post connected to the sleeve part and opposite to the first latching part and the second latching part Cooperating locking portion, the operating member does not rotate with the pivot and can move between a locking position and a unlocking position, in the locked position, the locking portion and the first latching portion or the second latching The locking part is not locked with the first locking part or the second locking part in the unlocking position, and the elastic resetting member provides a bias for positioning the operating member in the locked position; When the frame is located in a folded position close to the back shell and can be carried, the position of the first latching portion is opposite to the locking portion and is mutually latched and fixed with the locking portion, so that the frame is positioned at The folded position; When the frame body is located at a supporting position at an angle with the back shell, the position of the second locking portion is opposite to the locking portion and is mutually locked and fixed with the locking portion, so that the frame body is positioned on the support Location. The portable electronic device according to claim 1, wherein the support module further includes a driving and unlocking mechanism, the driving and unlocking mechanism having a first sleeve sleeved on the pivot and located between the other two adjacent pivotal walls A cam member, a second cam member and an elastic driving member, the first cam member is fixed to the fixing base and has a first cam surface facing the second cam member, the second cam member and the pivot shaft Rotating, slidable along the pivot, and having a second cam surface matched with the first cam surface. When the second cam surface abuts against the first cam surface, the second cam member drives the pivot to rotate To the position where the first latching portion and the locking portion are misaligned, the elastic driving member elastically presses against the second cam member to push the second cam member so that the second cam surface fully abuts against the first cam member The thrust of the cam surface. The portable electronic device according to claim 2, wherein the substrate is provided with a total of four pivotal walls, the pivot includes a first shaft and a second shaft, and the first shaft passes through Two of the adjacent pivotal walls are provided for the locking mechanism, and the second shaft rod penetrates through the other two adjacent pivotal walls and is provided for the drive unlocking mechanism. According to claim 3, the portable electronic device, wherein the first cam member is fixed to an adjacent pivotal wall, the pivotal wall is provided with two positioning holes, and the first cam member is located on the first cam The opposite side of the surface is formed with two positioning blocks respectively clamped in the positioning holes. The portable electronic device according to claim 3, wherein the drive unlocking mechanism further has a first gasket set on a side of the second cam member opposite to the second cam surface, and a set on The pivot shaft abuts against the second gasket of the pivotal wall adjacent to the pivot shaft. The elastic driving member is a compression spring and its two ends are respectively against the first gasket and the second gasket. The portable electronic device according to claim 1, wherein the frame body has two support rod portions spaced apart from each other and respectively connected to both ends of the pivot, and a support rod portion connected to the ends of the support rod portions for carrying and A handle that supports on a load-bearing surface. The portable electronic device according to claim 6, wherein each pole portion has a connector connected to the pivot, and the connector is in the shape of a hollow cylinder and is recessed on the inner peripheral surface at intervals along the circumferential direction. The pivot includes two linkage members located on the opposite outer sides of the pivoting walls to connect the connecting heads of the supporting rod portions respectively. Each linkage member has a ring body and a plurality of spaced protrusions protruding from the The clamping blocks on the outer periphery of the ring are matched with the concave and convex grooves of the corresponding connecting heads, and can link the frame body to make the frame body and the pivot rotate together. The portable electronic device according to claim 1, wherein the sleeve portion is cylindrical and has a first end surface facing the latch, and the locking portion is protruded from two extending along the first direction. The first end surface is constituted by convex blocks, the convex blocks are respectively located on both sides of the pivot and on a diameter. A latching portion is composed of two first latching grooves that are recessed from the abutting surface and respectively accommodating two protrusions of the locking portion, and the second latching portion is composed of two recesses that are recessed from the abutting surface. The two protruding blocks of the locking part are respectively accommodated by the second slot. The portable electronic device according to claim 8, wherein the sleeve portion further has a second end surface opposite to the first end surface, and a positioning groove is formed on the second end surface to accommodate the elastic reset member, the The elastic return piece is a compression spring and its two ends respectively abut against the sleeve portion and the pivotal wall adjacent to the sleeve portion.

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