TWI420881B - Lifting mechanism and portable electronic device of using the same - Google Patents

Description

Jacking mechanism and portable electronic device applying the jacking mechanism

The present invention relates to a jacking mechanism, and more particularly to a jacking mechanism for jacking up a keyboard of a portable electronic device.

Portable electronic devices such as mobile phones, handheld game consoles, etc., in order to reduce the size of the product, keep the appearance of the product simple, and protect the keys from damage or mis-press. More and more portable electronic devices tend to be designed as slide-type structures, the upper housings of the electronic devices are assembled on the lower housing and slidable relative to the lower housing, and the upper housing is provided with A display screen is provided with a keyboard on the lower casing. When the electronic device is not in use, the upper casing covers the upper casing and shields the keyboard of the electronic device. When the electronic device is used, the upper casing is opened relative to the lower casing to expose the keyboard for the user to operate.

However, in the conventional slide type electronic device, after the upper casing is opened relative to the lower casing, the keyboard and the display screen on the upper casing are not in the same plane, and the display screen has a gradient difference, so that the user feels the vision. The effect is not satisfactory. In addition, since the surface of the keyboard is lower than the surface of the upper casing, the user is inconvenience in operation when pressing the button.

In view of the above, it is necessary to provide a jacking mechanism that allows the keyboard of the portable electronic device to be lifted when the slide is opened.

In addition, it is necessary to provide a portable electronic device to which the jacking mechanism is applied.

A jacking mechanism includes a fixing plate, a guiding plate and a lifting plate. The plurality of guide columns are fixed on the fixing plate, and the plurality of resisting bodies are fixed on the guiding plate, and the guiding plate is further provided with a plurality of guiding holes, and the top lifting plate is formed with a plurality of wedge-shaped protrusions, the top plate The lifting plate is further provided with a plurality of sleeve holes, and the fixing plate, the guiding plate and the lifting plate are stacked and assembled in sequence, and the abutting body on the guiding plate is slidably fitted to the wedge-shaped protrusion on the lifting plate. The guide post is inserted into the sleeve through the guide hole, and the guide plate slides relative to the fixed plate and the jack plate by an external force, and the resist body slides relative to the wedge protrusion So that the jacking plate rises relative to the guide plate and the fixing plate.

A portable electronic device includes a lower casing, an upper casing, and a keyboard. The lower casing is fixed with a fixing plate, and the upper casing is fixed with a sliding plate, and the sliding plate is slidably Mounted on the fixed plate, the lower casing is further formed with a stop structure, the stop structure includes a first stop post and a second stop post, and the portable electronic device further includes a jacking mechanism The lifting mechanism includes a fixing plate, a guiding plate and a lifting plate. The fixing plate is fixed to the sliding plate, and the fixing plate is fixed with a plurality of wedge bodies and a plurality of elastic bodies. And a plurality of guide columns, the guide plate is formed with a flange, and the guide plate is provided with a plurality of through holes and a plurality of guide holes, and one of the through holes is fixedly provided with a resisting body, and the jacking plate is fixed Connected to the keyboard, the guide plate is formed with a plurality of wedge-shaped protrusions, and the jacking plate is further provided with a plurality of sleeve holes, and the fixing plate, the guide plate and the jacking plate are sequentially stacked and assembled, and the solid plate is assembled a wedge body on the connecting plate passes through the corresponding through hole of the guiding plate to abut the top lifting plate, and one end of the elastic member is connected to the top lifting plate through the corresponding through hole of the guiding plate, the guide The column is inserted into the sleeve hole through the corresponding guide hole of the guide plate, and the abutting body of the guide plate is respectively engaged with the wedge body and the wedge protrusion, and the upper case is coupled by an external force. After the lifting mechanism and the keyboard slide relative to the lower casing by a predetermined distance, the flange of the guiding plate of the jacking mechanism is blocked by the stopping structure on the lower casing, so that the guiding plate is opposite to the guiding plate The fixing plate and the lifting plate move, so that the abutting body on the guiding plate slides relative to the wedge-shaped body of the fixing plate and the wedge-shaped protrusion on the lifting plate, the abutting body and the wedge body and the wedge-shaped protrusion Out of the fit, the jacking plate is raised relative to the guide plate and the fixing plate to achieve a lifting of the keyboard relative to the lower casing.

Compared with the prior art, in the jacking mechanism of the present invention, the jacking plate can be lifted relative to the fixing plate and the guiding plate, and is slidably assembled by sliding the sliding plate fixed on the upper casing of the electronic device. The upper casing is slid relative to the lower casing on the fixing plate fixed on the lower casing. By fixing the fixing plate of the jacking mechanism to the sliding plate of the upper casing, the lifting mechanism can be slid relative to the lower casing, and the jacking mechanism is slid relative to the lower casing by a predetermined distance (ie, the length of the keyboard). Exposing the keyboard, the jacking mechanism starts to lift, and the guiding board slides relative to the fixing board and the jacking board, so that the resisting body on the guiding board and the wedge body and the jacking board on the fixing board The wedge-shaped protrusions slide relative to each other, and the wedge-shaped protrusions of the abutting body and the fixing plate are in inclined contact with the wedge-shaped protrusions of the lifting plate, so that the guiding plate rises relative to the fixing plate, and the lifting plate is opposite to the guiding plate and the solid The board rises, which causes the keyboard to rise. After the keyboard is raised, the display screen of the electronic device is substantially on the same plane, so that the electronic device can be When turned on, the visual effect is more ideal, making it easier for the user to operate the keyboard.

Referring to FIG. 1 , a jacking mechanism 100 includes a fixing plate 10 , a guiding plate 20 and a jacking plate 30 . The fixing plate 10 is a rectangular plate and can be made of a metal material. The fixing plate 10 is provided with a plurality of wedge assemblies 12 , a plurality of guiding columns 14 and a plurality of elastic members 16 . Each of the wedge members 12 includes two wedges 122, each of the wedges 122 having a wedge surface 124 that is inclined with respect to the plate surface of the fastening plate 10. The two wedges 122 of each wedge member 12 are arranged in parallel and define an accommodation space 126. The guide post 14 is a cylindrical body, and the elastic member 16 is a coil spring having a tapered shape. The guide post 14 and the elastic member 16 are respectively protruded from the surface of the fixing plate 10.

The guiding plate 20 is substantially a "convex" shaped plate, and a square plate is formed by cutting the two sides. The guide plate 20 includes a main body portion 22 and an end portion 24, and the width of the main body portion 22 is smaller than the width of the end portion 24. A plurality of through holes 222 and a plurality of guiding holes 224 are defined in the main body portion 22 . The through hole 222 includes a plurality of first through holes 2222 and a plurality of second through holes 2224. The second through hole 2224 is larger in size than the first through hole 2222 for the elastic member 16 to pass through. An abutting body 26 is respectively disposed on the end walls of the first through hole 2222 and the second through hole 2224. The position of each of the abutting bodies 26 respectively corresponds to the position of one of the wedge members 12 on the fixing plate 10.

Referring to FIG. 2 together, the abutting body 26 is formed by cutting a square body, and one end thereof is cut to form a wedge-shaped cutting body 262. The cutting body 262 includes a first cutting surface 2622 that is inclined to the plate surface of the main body portion 22 and the first cutting surface 2622 faces the jacking plate 30 for The jacking plate 30 is mated. The abutting body 26 is further formed with two second cutting faces 2624. The two second cutting faces 2624 are divided into two sides of the cutting body 262. The two second cutting faces 2624 are inclined to the plate surface of the main body portion 22 and the two second cutting faces 2624 face the fixing plate 10 for cooperation. Corresponding to one of the wedge members 12 on the fastening plate 10.

The guiding hole 224 is an elongated hole, and the guiding post 14 on the fixing plate 10 can pass through and the guiding post 14 can slide in the guiding hole 224. The end portion 24 is bent to form a flange 242 which is substantially perpendicular to the plate surface of the guide sheet 20.

The jacking plate 30 is stamped to protrude from the surface of the guiding plate 20 with a plurality of wedge-shaped protrusions 32. The positions of the wedge-shaped protrusions 32 respectively correspond to the positions of the cutting bodies 262 on the guiding plate 20, and each The wedge-shaped projection 32 also has an inclined surface (not shown) that engages the first cutting surface 2622 of the abutting body 26 on the guide sheet 20. The jacking plate 30 is further provided with a plurality of sleeve holes 34. The sleeve holes 34 are located corresponding to the guide posts 14 on the fixing plate 10 for arranging corresponding to the guide posts 14. The surface of the lifting plate 30 facing the guiding plate 20 is further provided with a plurality of hanging points (not shown), so that the elastic members 16 on the fixing plate 10 are correspondingly hooked with the hanging points, thereby The jacking plate 30 is in an elastically resisted state with respect to the fixing plate 10.

Referring to FIG. 3 and FIG. 4 , when the jacking mechanism 100 is assembled, the guide plate 20 and the jacking plate 30 are sequentially stacked and assembled on the fixing plate 10 . The abutting body 26 of the guiding plate 20 is respectively engaged with a corresponding one of the wedge members 12 of the fixing plate 10 , and the cutting body 262 of the abutting body 26 is received in the receiving space 126 defined by the two wedge members 12 . The second cutting surface 2624 of the abutting body 26 is respectively engaged with the wedge surface 124 of the wedge member 12. The inclined surface of the wedge-shaped projection 32 on the jacking plate 30 is in contact with the first cutting surface 2622 on the abutting body 26. Place The guide post 14 on the fastening plate 10 passes through the guiding hole 224 of the guiding plate 20 and fits into the corresponding sleeve hole 34 of the jacking plate 30. The elastic member 16 of the fixing plate 10 passes through the second through hole 2224 of the guiding plate 20 and is hooked with a corresponding hanging point on the lifting plate 30.

Referring to FIG. 5, when the jacking mechanism 100 is used, an external force pulls the guide sheet 20 to slide the guide sheet 20 relative to the fixing plate 10 and the jacking plate 30. The abutting body 26 of the guiding plate 20 slides relative to the wedge-shaped assembly 12 on the fixing plate 10 and the wedge-shaped protrusion 32 on the lifting plate 30, and the wedge-shaped surface 124 of the wedge-shaped component 12 is opposite to the guiding plate 20 The second cutting surface 2624 slides, forcing the guiding plate 20 to rise relative to the fixing plate 10, and the inclined surface of the wedge-shaped protrusion 32 of the lifting plate 30 slides relative to the first cutting surface 2622 of the guiding plate 20, forcing the lifting plate 30 is raised relative to the guide plate 20. Until the bottom of the guiding plate 20 abutting body 26 slides to the top of the wedge assembly 12, the wedge-shaped protrusion 32 of the lifting plate 30 slides to the top of the abutting body 26, and the lifting plate 30 is lifted to the maximum relative to the fixing plate 10. The height, and because the wedge-shaped projection 32 of the jacking plate 30 abuts against the planar top of the abutting body 26 of the guide plate 20, the jacking plate 30 can be maintained stable. During this process, the guide post 14 slides from one end of the guide hole 224 to the other end of the guide hole 224. The elastic member 16 is in an elastically stretched state. If it is necessary to restore the initial bonding state of the fixing plate 10, the guiding plate 20 and the lifting plate 30, it is only necessary to push the guiding plate 20 to slide the guiding plate 20 relative to the fixing plate 10 and the lifting plate 30 to guide Under the tension of the elastic member 16, the fixing plate 10, the guiding plate 20 and the lifting plate 30 will be quickly fitted.

Referring to FIG. 6, the jacking mechanism 100 is applied to a portable electronic device such as the mobile phone 200. The mobile phone 200 includes an upper casing 40, a sliding plate 50, a pad 60, a lower casing 70, a fixing plate 80 and a key. Disk 90. The upper casing 40 includes an upper casing 42 and a keyboard cover 44. The upper casing 42 is formed with a display screen 422, and one end of the upper casing 42 is further provided with two first connecting holes 424. A keyboard hole 442 is defined in the keyboard cover 44, and a second connecting hole (not shown) corresponding to the first connecting hole 424 is further disposed at one end of the keyboard cover 44, so that the upper cover 42 is provided. The upper casing 40 is formed in connection with the keyboard cover 44.

The sliding plate 50 is a rectangular plate, and two sides thereof are formed with guide rails 52. The two guide rails 52 cooperate with the two sides of the fixing plate 80 to slide the sliding plate 50 relative to the fixing plate 80. A first stud 54 is disposed on the sliding plate 50. The first stud 54 cooperates with the first connecting hole 424 of the upper casing 42 and the second connecting hole on the keyboard cover 44 to make the sliding plate 50 and The upper casing 40 is fixed.

The size of the backing plate 60 is equivalent to the size of the fixing plate 10. The upper and lower plate surfaces of the backing plate 60 are respectively fixed (such as welded) with the fixing plate 10 and the sliding plate 50 to raise the top. Lifting mechanism 100.

Referring to FIG. 7 together, the lower casing 70 includes a lower casing 72 and a lower casing 74. The shape of the lower casing 72 corresponds to the upper casing 42. The lower casing 72 includes a top cover 722 that is detachably mounted to the upper casing 72. A second stop structure 76 is formed on the inner surface of the top cover 722. The stop structure 76 is disposed at two corners of one end of the top cover 722, and includes a first stop post 762 and a second stop. Column 764. The first stop post 762 and the second stop post 764 are arranged along the length of the top cover 722 , and the second stop post 764 is closer to the end surface of the top cover 722 than the first stop post 762 . The first stop post 762 is shorter than the second stop post 764. The first stop post 762 has elasticity, and the top portion has a beveled structure on the cut side.

The lower shell plate 74 has a length corresponding to the length of the sliding plate 50. The lower shell plate 74 is fixed to the lower casing 72, and the lower shell plate 74 is further provided with a plurality of screw holes 742.

The fixing plate 80 is configured to cooperate with the sliding plate 50. The bottom surface of the fixing plate 80 is provided with a plurality of second studs 82. The second studs 82 cooperate with the screw holes 742 of the lower shell plate 74. The fixing plate 80 is fixed to the lower casing 74.

Referring to FIG. 8 and FIG. 9, when the jacking mechanism 100 is assembled to the mobile phone 200, the keyboard 90 is first assembled (eg, screwed or welded) to the jacking plate 30, and then jacked up. The fixing plate 10 of the mechanism 100 is fixed to the backing plate 60 (such as welding), and then the backing plate 60 is fixed to the sliding plate 50.

A first screw (not shown) is then provided, the first screw passing through the first connecting hole 424 of the upper casing 42 and the second connecting hole of the keyboard cover 44 and the first stud 54 on the sliding plate 50. When the upper casing 40 is fixed to the sliding plate 50, the jacking mechanism 100 is also fixed to the upper casing 40, and the keyboard 90 is received in the keyboard hole 442 of the keyboard cover 44.

Then, a second screw (not shown) screw (not shown) is provided, and the second screw is screwed through the screw hole 742 on the lower shell plate 74 to the second stud 82 on the fixing plate 80. The fixing plate 80 is fixed to the lower casing 70.

The sliding plate 50 is assembled with the fixing plate 80. The guide rail 52 of the sliding plate 50 cooperates with the two sides of the fixing plate 82 to slide one end of the lifting mechanism 100 into the lower casing 72.

Finally, the top cover 722 is assembled, and after the top cover 722 is assembled, the height of the flange 242 of the guide plate 20 protrudes to the first stop post 762 and slightly beyond the first stop post 762, that is, the fold The edge 242 can be respectively abutted with the first stop 742 and the second stop 764 in the sliding direction, and the abutting portion of the second stop 764 The length is longer. Then the assembly of the mobile phone 200 is completed.

Referring to FIG. 9 and FIG. 10, when the mobile phone 200 is used, the upper casing 40 of the mobile phone 200 is pushed, and the upper casing 40 is slid relative to the lower casing 70 by a predetermined distance. In the process, the upper casing 40 slides together with the jacking mechanism 100, the keyboard 90 and the sliding plate 50 relative to the lower casing 70 to expose the keyboard 90; the guiding plate 20 of the jacking mechanism 100 The flange 242 abuts the first stop post 762 on the top cover 722 of the lower casing 72. Since the first stop post 762 has a certain elasticity and the inclined surface of the top portion cooperates with the flange 242, the fold The rim 242 can slide over the first stop post 762 in contact with the second stop post 764 and is blocked by the second stop post 764.

Referring to FIGS. 11 and 12, the upper casing 40 continues to slide in the original direction with respect to the lower casing 70, and the upper casing 40 slides along with the fixing plate 10 and the jacking plate 30 with respect to the guide plate 20, the guiding The abutting body 26 of the plate 20 slides relative to the wedge-shaped assembly 12 on the fixed plate 10 and the wedge-shaped projection 32 on the jacking plate 30. The bottom of the abutting body 26 slides to the top of the wedge assembly 12 so that the guiding plate 20 rises relative to the fixing plate 10, and the wedge-shaped protrusion 32 of the lifting plate 30 slides to the top surface of the abutting body 26, so that the jacking plate 30 is raised relative to the guide plate 20. In this way, the keyboard 90 is raised.

When the keyboard 90 needs to be closed, the lower housing 70 is pushed to slide relative to the upper housing 40, and the top side of the first stop post 762 of the lower cover 722 of the lower cover 722 is opposite to the guide plate 20 The flange 242 is in contact with each other. Under the action of the first stop post 726, the guide plate 20 slides relative to the fixing plate 10 and the jacking plate 30, and the elastic plate 16 of the fixing plate 10 acts under the action of the elastic member 16. 20 will be quickly returned and reattached to the fixed plate 10 and the top plate 30. Then, a larger force is applied to cause the flange 242 of the guide plate 20 to bend the first The top end of the stop post 724 and past the first stop post 724, the lower housing 70 can be closed relative to the upper housing 40, and the jacking mechanism 100 is returned back into the lower housing 72.

The keyboard 90 is lifted upward from the keyboard hole 442 of the keyboard cover 44 by the jacking mechanism 100 to be substantially in the same plane as the display screen 422 of the upper cover 42. This makes the mobile phone 100 beautiful and convenient for the user. Operate the keyboard 90. When the mobile phone 100 is closed, the keyboard 90 is lowered first by the jacking mechanism 100, and then the upper casing 40 is closed relative to the lower casing 70.

It can be understood that the backing plate 60 can be omitted, and the fixing plate 10 can be directly fixed on the sliding plate 50.

It can be understood that the wedge member 12 of the fixing plate 10 can be omitted, and the guide post 14 of the fixing plate 10 is inserted into the sleeve hole 34 of the jacking plate 30 through the guiding hole 224 of the guiding plate 20, and the fixing plate is fixed. The elastic member 16 on the 10 is hooked by the through hole 222 to the hanging point on the jacking plate 30. The abutting body 26 is disposed on the surface of the guiding plate 20, and the abutting body 26 includes only the first cutting surface 2622. The first cutting surface 2622 and the wedge-shaped protrusion 32 of the jacking plate 30 are inclined. Face cooperation.

It can be understood that since the elastic member 16 of the fixing plate 10 is not a necessary technical component of the technical solution during the lifting process of the jacking plate 30, the elastic member 16 can be omitted.

It can be understood that the wedge member 12 and the elastic member 16 of the fixing plate 10 can be omitted at the same time. The through hole 222 of the guiding plate 20 can be omitted, and the guiding plate 20 is attached to the fixing plate 10, and is fixed. The guide post 14 of the plate 10 is inserted into the sleeve hole 34 of the jacking plate 30 through the guide hole 224 of the guide plate 20, the resisting body 26 is disposed on the surface of the guide plate 20, and the resisting body 26 includes only the first cutting surface 2622. The first cutting surface 2622 cooperates with the inclined surface of the wedge-shaped protrusion 32 of the jacking plate 30.

Jacking mechanism ‧‧100

Mobile phone ‧‧200

Fixed plate ‧‧10

Upper casing ‧‧40

Wedge assembly ‧‧12

Upper cover ‧‧42

Wedge ‧‧122

Display ‧ ‧ 422

Wedge surface ‧‧124

First connection hole ‧‧‧424

Housing space ‧‧126

Keyboard cover ‧‧44

Guide board ‧‧20

Keyboard hole ‧‧‧442

Main body ‧‧22

Sliding plate ‧ ‧ 50

Through hole ‧‧222

Rail ‧‧‧52

First through hole ‧‧2222

First stud ‧‧54

Second through hole ‧‧2224

Pad ‧ ‧ ‧

Guide hole ‧‧‧224

Lower case ‧‧70

End ‧‧24

Lower cover ‧‧‧72

Folding ‧‧ 242

Top cover ‧‧ 722

Responsive body ‧ ‧ 26

Lower shell ‧‧74

Cutting body ‧‧‧262

Screw hole ‧‧742

First cutting surface ‧‧2622

Stop structure ‧‧76

Second cutting surface ‧‧2624

First stop column ‧‧762

Jacking board ‧ ‧ 30

Second stop column ‧‧764

Wedge-shaped ‧‧‧32

Fixed plate ‧‧80

Set hole ‧ ‧ 34

Second stud ‧‧82

1 is a perspective exploded view of a jacking mechanism of a preferred embodiment of the present invention; FIG. 2 is another perspective view of a guide panel of a jacking mechanism according to a preferred embodiment of the present invention; and FIG. 3 is a jacking mechanism of a preferred embodiment of the present invention. FIG. 4 is a partial cross-sectional view showing the assembly of the jacking mechanism of the preferred embodiment of the present invention; FIG. 5 is a cross-sectional view showing the jacking mechanism of the jacking mechanism of the jacking mechanism of the preferred embodiment of the present invention. FIG. 6 is an exploded perspective view of the electronic device using the jacking mechanism according to a preferred embodiment of the present invention; FIG. 7 is a partial cross-sectional view showing the housing of the jacking mechanism according to a preferred embodiment of the present invention; FIG. 9 is a schematic cross-sectional view of the electronic device of the preferred embodiment of the present invention; FIG. 9 is a schematic cross-sectional view of FIG. 8; FIG. 10 is an electronic device having the jacking mechanism according to a preferred embodiment of the present invention; FIG. 11 is a schematic cross-sectional view of FIG. 10; FIG. 12 is a schematic view of the electronic device having the jacking mechanism after the expansion of the keyboard of the preferred embodiment of the present invention; Figure 13 is a schematic cross-sectional view of Figure 12.

Jacking mechanism ‧‧100

Guide hole ‧‧‧224

Fixed plate ‧‧10

End ‧‧24

Wedge assembly ‧‧12

Folding ‧‧ 242

Wedge ‧‧122

Responsive body ‧ ‧ 26

Wedge surface ‧‧124

Cutting body ‧‧‧262

Housing space ‧‧126

First cutting surface ‧‧2622

Guide board ‧‧20

Second cutting surface ‧‧2624

Main body ‧‧22

Jacking board ‧ ‧ 30

Through hole ‧‧222

Wedge-shaped ‧‧‧32

First through hole ‧‧2222

Set hole ‧ ‧ 34

Second through hole ‧‧2224

Claims (10)

A jacking mechanism is improved in that the jacking mechanism comprises a fixing plate, a guiding plate and a jacking plate, wherein the fixing plate is provided with a plurality of guiding columns, and the guiding plate is fixed with multiple resistances The guiding plate is further provided with a plurality of guiding holes, the top lifting plate is formed with a plurality of wedge-shaped protrusions, and the lifting plate is further provided with a plurality of sleeve holes, the fixing plate, the guiding plate and the lifting The plates are stacked and assembled in sequence, and the abutting body on the guiding plate is slidably engaged with the wedge-shaped protrusions on the lifting plate, and the guiding column is inserted into the sleeve hole through the guiding hole, and the external force is passed. The guiding plate is slid relative to the fixing plate and the lifting plate, and the abutting body slides relative to the wedge-shaped protrusion, so that the lifting plate is raised relative to the guiding plate and the fixing plate. The jacking mechanism of claim 1, wherein the guide plate is provided with a plurality of through holes, the abutting body is fixed to one side of the through hole, and the fixing plate is further fixed. There is a plurality of wedge members that slidably conform to the abutting body. The jacking mechanism of claim 2, wherein the fixing plate is further provided with an elastic member, and the elastic member is connected to the jacking plate through the corresponding through hole of the guiding plate. The jacking mechanism of claim 2, wherein the abutting body comprises a first cutting surface facing the jacking plate, and the wedge-shaped protrusion of the jacking plate comprises an inclined surface, the inclined surface and The first cutting face abuts. The jacking mechanism of claim 2, wherein the wedge assembly comprises two wedges, each wedge body comprises a wedge surface, and the abutting body comprises two second cutting faces facing the fixing plate. The two second cutting faces cooperate with the two wedge faces of the two wedges. A portable electronic device includes a lower casing, an upper casing, and a keyboard. The lower casing is fixed with a fixing plate, and the upper casing is fixed with a sliding plate, and the sliding plate is slidably Mounted on the fixing plate, the improvement is that: the lower casing is further formed with a stopping structure, the portable electronic device further includes a jacking mechanism, and the jacking mechanism comprises a fixing plate and a guiding plate And a lifting plate, the fixing plate is fixed on the sliding plate, the fixing plate is fixed with a plurality of guiding columns, the guiding plate is formed with a folding edge, and the guiding plate is fixed The plurality of guiding holes are further disposed on the guiding plate, the top lifting plate is fixed to the keyboard, the guiding plate is formed with a plurality of wedge-shaped protrusions, and the jacking plate is further provided with a plurality of sleeve holes The fixing plate, the guiding plate and the lifting plate are stacked and assembled in sequence, and the abutting body on the guiding plate is slidably engaged with the wedge-shaped protrusion on the lifting plate, and the guiding column passes through the guiding plate. Corresponding said guiding hole is sleeved into the sleeve hole, and the upper casing is coupled with the external force After the lifting mechanism and the keyboard slide relative to the lower casing by a predetermined distance, the flange of the guiding plate of the jacking mechanism is blocked by the stopping structure on the lower casing, so that the guiding plate is opposite to the fixing The plate and the jacking plate move, so that the abutting body on the guiding plate slides relative to the wedge-shaped protrusion on the jacking plate, and the jacking plate rises relative to the guiding plate and the fixing plate to achieve a relative keyboard lowering The casing rises. The portable electronic device of claim 6, wherein the guide plate is provided with a plurality of through holes, and the abutting body is fixed to one side of the through hole, and the fixing plate is further fixed. A plurality of wedge assemblies are provided, the wedge assemblies slidably engaging the abutting body. The portable electronic device of claim 7, wherein the fixing plate further has an elastic member, and the elastic member is connected to the top lifting plate through the corresponding through hole on the guiding plate. . The portable electronic device of claim 6, wherein the lower casing comprises a lower casing, the lower casing comprises a top cover, and the stopping structure is disposed on two sides of one end of the top cover. The portable electronic device of claim 6, wherein the stop structure comprises a first stop post and a second stop post, the second stop post being longer than the first stop post The first stop post has a certain elasticity, and the top side of the first stop post has a sloped structure.