TW202001957A - Pivot mechanism and height adjusting mechanism for changing modes of a retractable keyboard - Google Patents

Abstract

A pivot mechanism used includes a first shaft, a bridging component, a first connecting component, a linkage set and a supporting component. The bridging component is connected to the first shaft and has a first cam. The linkage set is connected to a retractable keyboard and disposed on the first connecting component. The supporting component has a main body, a sliding pin and a second cam. The main body is disposed on the first shaft. The sliding pin is connected to the linkage set. The second cam movably contacts the first cam. When the bridging component is rotated from a first angle to a second angle, the first cam pushes the second cam to move the supporting component along the first shaft, and linkage set is switched from a first state to a second state via a track of the sliding pin, to adjust a height of the retractable keyboard.

Description

Pivot mechanism and height adjustment mechanism that can be used to change the state of a lifting button

The invention provides a mechanism for changing the state of a lifting button, especially a pivot mechanism and a height adjustment mechanism that can be used to change the state of a lifting button.

With the advancement of technology, consumer electronic products with light and thin characteristics are easy to operate and easy to carry, and are increasingly popular with consumers. In order to reduce the thickness of its products, thin notebook computers have designed a key and keyboard with lifting function. When you want to use a thin notebook computer, users can lift the keyboard with lifting function from the surface of the housing to provide a longer operating stroke to make the keys feel more comfortable to press; do not use a thin notebook computer, a keyboard with lifting function The case will be retracted, allowing the closed laptop to have an ultra-thin appearance. The traditional keyboard with lifting function will not automatically adjust the height with the opening and closing of the notebook computer, causing inconvenience to the user.

The present invention provides a pivot mechanism and a height adjustment mechanism that can be used to change the state of a lifting button to solve the above problems.

The scope of the patent application of the present invention discloses a pivot mechanism for changing the state of a lifting button, which includes a first rotating shaft, a bridge member, a first connecting member, a connecting rod group and a supporting member. The bridge is pivotally connected to the first rotating shaft. The bridge has a first cam. The connecting rod group is connected to the lifting type button and is rotatably arranged on the first connecting piece. The support has a body, a sliding tip and a second cam. The main body is slidably disposed on the first rotating shaft, the sliding tip is connected to the connecting rod set, and the second cam moves and stops against the first cam. When the bridge member is turned from the first angle to the second angle, the second cam is pushed through the first cam to move the support member along the first rotation axis, and the slide link traction link group is switched from the first state to the second state by This adjusts the height of the lift button.

The scope of the patent application of the present invention also discloses a height adjustment mechanism applied to a lifting button, which includes a base, a first linking member, a second linking member and a motor. The first linking member is movably arranged on the base and fixedly connected with the lifting button. The second link is movably connected to the first link. The motor is electrically connected to the second linking member, which is used to drive the second linking member to rotate, and to draw the first linking member to generate displacement relative to the base, so as to adjust the height of the lifting button.

The pivot mechanism of the present invention uses three pivot members as a pivot group for the first rotation axis to rotate relative to the second rotation axis. The first pivot piece and the third pivot piece are matched with gears, and the second pivot piece and the third pivot piece are matched with a worm gear, which can effectively avoid structural interference and meet the opening and closing requirements of the two shells of the electronic control device. The pivot mechanism uses a cam to drive the support member, and the support member pulls the link group to drive the height adjustment of the lifting button. The pivot mechanism of the present invention can automatically adjust the height of the lifting button according to the expansion angle of the two shells of the electronic control device; the mechanical pivot mechanism has a simple structure and has the advantages of convenient operation.

Please refer to FIG. 1 to FIG. 4, FIG. 1 is a schematic diagram of an electronic control device A according to an embodiment of the present invention, FIG. 2 is a partial structural diagram of a keyboard 10 according to an embodiment of the present invention, and FIG. 3 and FIG. 4 are respectively This is an exploded view of the pivot mechanism 12 of the embodiment of the present invention at different viewing angles. The electronic control device A has a first housing B and a second housing C that can be opened and closed to each other. The pivot mechanism 12 is provided between the first housing B and the second housing C of the electronic control device A. The first casing B has a display screen, and the second casing C has a keyboard 10, and the keyboard 10 is provided with a plurality of lifting keys 14. During the rotation of the first housing B, the application state of the lift button 14 is switched through the pivot mechanism 12. For example: when the first housing B is opened relative to the second housing C, the pivot mechanism 12 raises the key 14 to make it float out of the second housing C to facilitate the user's pressing operation; for example, the first housing B is relative to the second The housing C is closed, and the pivot mechanism 12 lowers the button 14 so that the electric control device A meets the ultra-thin appearance requirements.

The pivot mechanism 12 may include a first rotating shaft 16, a bridge member 18, a first connecting member 20, a link group 22, a supporting member 24, a stopper 26, a first elastic element 28, a second rotating shaft 30 and a second connecting member 32. The bridge 18 can be pivotally connected to the first rotation shaft 16 and the second rotation shaft 30, and the bridge 18 also has a first cam 34. The first connecting member 20 is installed in the second housing C, and the connecting rod group 22 is rotatably disposed on the first connecting member 20 and is connected to the lifting button 14. The second connector 32 is disposed on the second rotating shaft 30 and is mounted on the first housing B. The support 24 may have a body 36, a slider 38 and a second cam 40. The body 36 is slidably disposed on the first rotating shaft 16. The sliding pin 38 is connected to the link group 22 and is movably disposed in the sliding slot 42 of the first connecting member 20. The second cam 40 is disposed on the body 36 and is used for slidingly braking the first cam 34.

The second cam 40 may include the adjacent protrusion 44 and the flat portion 46. As shown in FIGS. 3 and 4, the protruding portion 44 and the flat portion 46 surround the side edge of the body 36 so that the first cam 34 can smoothly slide from the protruding portion 44 to the flat portion 46 or from the flat portion 46滑向突部44。 44 sliding to the protrusion 44. The proportional relationship between the protruding portion 44 and the flat portion 46 will affect the lifting process of the lifting button 14 when the first housing B is unfolded relative to the second housing C. For example, the width of the flat portion 46 may be preferably four times the width of the protrusion 44, where the width can be expressed as the trajectory of the protrusion 44 and the flat portion 46 along the ring structure of the body 36. During the turning process of the first housing B relative to the second housing C, the lifting button 14 is driven by the pivot mechanism 12 to be lifted only a quarter of the time. The width ratio of the protruding portion 44 and the flat portion 46 is not limited to that described in the foregoing disclosure, and depends on the design requirements.

Furthermore, the stopper 26 is disposed at an end of the first rotating shaft 16 relative to the bridge 18. The first elastic element 28 is located on the stop 26 and the support 24. Both ends of the first elastic element 28 respectively stop against the stopper 26 and the support 24; when the support 24 is pushed by the first cam 34 and moves toward the stop 26 along the first rotation axis 16, the first elasticity The element 28 compresses to store the elastic restoring force. When the first cam 34 no longer presses the protruding portion 44 of the second cam 40, the elastic restoring force of the first elastic element 28 can drive the support 24 to quickly return to the initial position.

The link group 22 may include a first link 48 and a second link 50. The first end 52 of the first link 48 is connected to the slider 38, and the second end 54 is connected to the lift button 14 via the second link 50. The turning end 56 of the first link 48 is located between the first end 52 and the second end 54 for pivotally connecting the first connecting member 20. Therefore, the movement of the sliding tip 38 in the sliding groove 42 will pull the first link 48 to rotate around the turning end 56 as the axis, thereby driving the displacement of the second link 50. In the preferred embodiment of the present invention, the link group 22 may further include a third link 58. The second end 54 of the first link 48 is connected to the second link 50 by a third link 58. With the design of the third link 58, the second link 50 can linearly move back and forth along the first direction D1 as the first link 48 rotates.

The second elastic element 60 is a selective configuration element. The two ends of the second elastic element 60 are respectively connected to the first link 48 and the first connector 20. When the first cam 34 slides from the protruding portion 44 to the flat portion 46, not only the elastic restoring force of the first elastic element 28 can drive the support member 24 to move along the first rotating shaft 16 in the direction of the bridge member 18, but also the second elastic element 60 It can release its elastic restoring force, driving the first link 48 of the link group 22 to rotate clockwise relative to the first link 20, and also can provide the support 24 to return to the initial position.

The pivot mechanism 12 may further include a first hinge member 62, a second hinge member 64, a third hinge member 66, and a torsion element 68. The first hinge member 62 is connected to the first rotating shaft 16, and the second hinge member 64 is connected to the second rotating shaft 30. The torsion element 68 is disposed on the first hinge member 62 and the second hinge member 64. The number and position of the torque elements 68 are not limited to those shown in the embodiments of the present invention, and depend on the torque adjustment requirements. The third hinge piece 66 is located between the first hinge piece 62 and the second hinge piece 64. The first active member 70 of the first hinge member 62 cooperates with the second active member 72 of the third hinge member 66, and the first passive member 74 of the second hinge member 64 cooperates with the second passive member 76 of the third hinge member 66. In addition, the pivot mechanism 12 may include a housing 78 for covering the pivot group (meaning the first pivot member 62, the second pivot member 64, and the third pivot member 66) and the torsion element 68 to provide dust protection.

Please refer to FIG. 5, which is a schematic diagram of the pivot mechanism 12 with the housing 78 removed according to an embodiment of the invention. When the pivot mechanism 12 is turned over, the first active member 70 and the second active member 72 rotate reversely due to mechanical cooperation, and the cooperation between the first passive member 74 and the second passive member 76 does not interfere, so the first The second rotating shaft 30 can rotate around the first rotating shaft 16 through the bridge 18 and the hinge group, so that the first housing B can smoothly expand or collapse relative to the second housing C. Generally speaking, the rotation angle of the second rotating shaft 30 relative to the first rotating shaft 16 is less than 360 degrees, so that the electronic control device can be switched from the laptop mode to the tablet mode; however, the actual application is not limited to this.

Please refer to FIG. 6 to FIG. 11, FIG. 6 and FIG. 7 are schematic diagrams of the first cam 34 and the second cam 40 in different operation stages of the embodiment of the present invention, and FIG. 8 is a continuous diagram of the embodiment of the present invention. The schematic diagram of the rod group 22 in the first state, FIG. 9 is a schematic diagram of the connecting rod group 22 in the second state according to an embodiment of the present invention, and FIG. 10 is a schematic diagram of the connecting rod group 22 shown in FIG. 8 from another perspective FIG. 11 is a schematic view of the connecting rod group 22 shown in FIG. 9 from another perspective.

As shown in FIG. 6, the first housing B is close to the second housing C. At this time, the bridge 18 is at the first angle, and the support 24 is at the first position; the first cam 34 abuts the second cam The flat portion 46 of 40, at this time, the first elastic element 28 is not pressed. As shown in FIG. 7, the first housing B is turned over about 90 degrees to 180 degrees relative to the second housing C, the bridge 18 is located at the second angle, and the first cam 34 is along the first The rotating shaft 16 rotates and slides from the flat portion 46 to the protruding portion 44. Wherein, the turning angle of the first housing B relative to the second housing C is not limited to that shown in the foregoing embodiment, and depends on the design requirements. The trajectory of the first cam 34 caused by the second cam 40 causes the support member 24 to move to the second position along the first rotation axis 16 to the left, so that the first elastic element 28 is compressed and deformed. If the turning angle of the first housing B exceeds one hundred and eighty degrees, or retracts to less than ninety degrees, the first cam 34 will move from the protrusion 44 back to the flat portion 46, and the elastic restoring force stored by the first elastic element 28 After being released, the supporting member 24 is provided to move right along the first rotating shaft 16 to return to the first position shown in FIG. 6.

As shown in FIGS. 8 and 10, the first cam 34 contacts the flat portion 46 of the second cam 40, and the first end 52 of the first link 48 is connected to the sliding tip 38 and is located at the right end of the sliding slot 42. 22 is in the first state, at which time the second elastic element 60 is not compressed. As shown in FIGS. 9 and 11, the first cam 34 touches the protruding portion 44 of the second cam 40, and the support 24 moves to the left along the first rotating shaft 16, so that the slider 38 moves from the right end to the left end of the slide slot 42 . At this time, the first link 48 rotates counterclockwise with respect to the first connecting member 20 with the turning end 56 as the axis, and the second elastic element 60 is compressed to store the elastic restoring force. The third link 58 is pulled clockwise by the first link 48 to rotate clockwise, thereby pushing the second link 50 to translate in the first direction D1, and the link group 22 is switched to the second state. The linear movement of the second link 50 can be used to adjust the height of the lifting button 14 to lift it from the second housing C for the user to operate.

If the turning angle of the first housing B exceeds one hundred eighty degrees, or retracts to less than ninety degrees, the elastic restoring force of the first elastic element 28 drives the support 24 to move to the right along the first rotating shaft 16 and can drive the slider 38 moves from the left end of the chute 42 back to the right end, allowing the link group 22 to switch back to the first state. In addition, the elastic restoring force of the second elastic element 60 will also push the first link 48 to rotate clockwise with the turning end 56 as the axis, which helps to cut the link group 22 back to the first state, so that The two connecting rods 50 are retracted in the reverse direction, and the height of the lifting button 14 is reduced to be received in the second housing C.

Please refer to FIGS. 12 to 15. FIGS. 12 to 15 are schematic diagrams of the pivot mechanism 12 at different opening and closing angles according to an embodiment of the present invention. As shown in FIG. 12, the first cam 34 is located on the flat portion 46 below the protruding portion 44 of the second cam 40, the support 24 is located on the right side of the first rotating shaft 16, the link group 22 is in the first state, and the lift button 14 At a low point. As shown in FIG. 13, the bridge member rotates to the second angle as the first housing B expands, the first cam 34 brakes the protrusion 44 of the second cam 40, and the support member 24 moves left on the first rotating shaft 16, The link group 22 is cut to the second state, and the second link pushes the lifting button 14 to the high position. As shown in FIGS. 14 and 15, the first cam 34 moves to the flat portion 46 above the protrusion 44, the support 24 moves to the right of the first rotating shaft 16, the link group 22 cuts back to the first state, and the lift button 14 Revert to the low point position.

Please refer to FIGS. 16 and 17. FIG. 16 is a schematic diagram of the electronic control device A according to the first embodiment of the present invention, and FIG. 17 is a schematic diagram of the height adjusting mechanism 80 according to the first embodiment of the present invention. The height adjustment mechanism 80 may include a base 82, a first link 84, a second link 86 and a motor 88. The first link 84 is movably disposed on the base 82 and used to connect to the lifting button 14. The second link 86 is electrically connected to the motor 88, and is combined with the first link 84 in a relatively movable manner. The motor 88 drives the second link 86 to rotate, and the first link 84 can be pulled to be displaced relative to the base 82. The height adjustment mechanism 80 may further include a sensor 90 and an arithmetic processor 92. The arithmetic processor 92 provides signals to the motor 88 and the sensor 90 to cooperate with each other. The sensor 90 can detect the relative movement of the first housing B and the second housing C by optical or electromagnetic effects. The arithmetic processor 92 determines whether the motor 88 is triggered to adjust the height of the lifting button 14 according to the sensing result of the sensor 90.

As shown in FIG. 17, the first link 84 has a strip-shaped groove 94, and the second link 86 has a strip-shaped engaging portion 96. The strip-shaped engaging portion 96 is matched with the strip-shaped groove 94. When the second link 86 rotates, the strip-shaped engaging portion 96 pushes the inner wall surface of the strip-shaped groove 94 to allow the first link 84 to move unidirectionally in the accommodating space of the base 82. The moving first linking member 84 can be used to pull the actuating element of the lifting button 14 to allow the lifting button 14 to raise or lower the height on the second housing C. In other words, when the first housing B is turned over with respect to the second housing C, the sensor 90 "detects" that the first housing B is away from the second housing C, and the arithmetic processor 92 can accordingly start the motor 88 , Adjust the lifting button 14 to an appropriate height.

Please refer to FIGS. 18 to 20. FIG. 18 is a schematic diagram of the electronic control device A according to the second embodiment of the present invention, and FIG. 19 is an exploded view of the components of the height adjustment mechanism 80' according to the second embodiment of the present invention. The figure is an assembly diagram of a height adjustment mechanism 80' according to a second embodiment of the invention. The first link 84' of the height adjustment mechanism 80' has a locus 98, and the second link 86' has a flange portion 100, and the flange portion 100 slides along the locus 98. The trajectory 98 is a curve that follows the functional requirements, as shown by the broken line pattern in FIG. 19. The second link member 86' is rotatably provided on the axis 102. When the second link member 86' is driven to rotate, causing the flange portion 100 to slide from the concave portion of the track 98 to the convex portion, the first link member 84' is squeezed and translates to the left relative to the base 82' along the axis 102 . The moving first link member 84' can pull the lifting button 14 to raise or lower the height in the second housing C.

In addition, the axis 102 may also have a limiting portion 104 for engaging with the limiting groove 106 of the second link 86'. The arithmetic processor 92 can drive the motor 88' to rotate the second link member 86' according to the sensing result of the sensor 90, so as to pull the first link member 84' and drive the height adjustment mechanism of the lifting button 14. If the limiting portion 104 of the shaft 102 is inserted into the limiting groove 106, it can be used to limit the rotation of the second link member 86' relative to the shaft 102. The height adjustment mechanism 80' can move the axis 102, or move the second link 86', or move the axis 102 and the second link 86' at the same time to engage and engage the limiting portion 104 and the limiting groove 106 Separation; the triggering mechanism can be manually driven or driven by the system, depending on the actual needs.

In summary, the pivot mechanism of the present invention uses three pivot members as a pivot group for the first rotation shaft to rotate relative to the second rotation shaft. The first hinge part and the third hinge part are matched with the active part, and the second hinge part and the third hinge part are matched with the passive part, which can not only effectively avoid structural interference, but also meet the opening and closing requirements of the two shells of the electric control device. The pivot mechanism uses a cam to drive the support member, and the support member pulls the link group to drive the height adjustment of the lifting button. The pivot mechanism of the present invention can automatically adjust the height of the lifting button according to the expansion angle of the two shells of the electronic control device; the mechanical pivot mechanism has a simple structure and has the advantages of convenient operation. In addition, the present invention can also use the electronically controlled height adjustment mechanism to change the height of the lifting button. The arithmetic processor can trigger the motor according to the expansion angle of the casing obtained by the sensor, and drive the height adjustment of the lifting button through the linkage. The advantages of precise operation. The above are only the preferred embodiments of the present invention, and all changes and modifications made in accordance with the scope of the patent application of the present invention shall fall within the scope of the present invention.

10‧‧‧Keyboard 12‧‧‧Pivot mechanism 14‧‧‧Lift-type key 16‧‧‧ First shaft 18‧‧‧Bridge piece 20‧‧‧First connection piece 22‧‧‧Link set 24‧‧ ‧Support member 26‧‧‧ Stopper 28‧‧‧ First elastic element 30‧‧‧Second rotating shaft 32‧‧‧Second connecting member 34‧‧‧First cam 36‧‧‧Body 38‧‧‧Sliding Tip 40‧‧‧Second cam 42‧‧‧Chute 44‧‧‧Projection 46‧‧‧Flat part 48‧‧‧ First link 50‧‧‧Second link 52‧‧‧First link The first end 54‧‧‧The second end of the first link 56‧‧‧The turning end of the first link 58‧‧‧The third link 60‧‧‧The second elastic element 62‧‧‧The first hub Part 64‧‧‧Second hub part 66‧‧‧ Third hub part 68‧‧‧ Torsion element 70‧‧‧ First active part 72‧‧‧ Second active part 74‧‧‧ First passive part 76‧‧ ‧Second passive part 78‧‧‧case 80, 80′‧‧‧ height adjustment mechanism 82, 82′‧‧‧ base 84, 84′‧‧‧ first linkage 86, 86'‧‧‧‧second linkage 88‧‧‧motor 90‧‧‧sensor 92‧‧‧ arithmetic processor 94‧‧‧strip groove 96‧‧‧strip engagement portion 98‧‧‧track 100‧‧‧flange portion 102‧ ‧‧Axis 104‧‧‧Limit part 106‧‧‧Limit slot A‧‧‧Electronic control device B‧‧‧First case C‧‧‧Second case D1‧‧‧First direction

FIG. 1 is a schematic diagram of an electronic control device according to an embodiment of the invention. FIG. 2 is a schematic diagram of a partial structure of a keyboard according to an embodiment of the invention. Fig. 3 and Fig. 4 are exploded views of the pivot mechanism of the embodiment of the present invention at different viewing angles. FIG. 5 is a schematic diagram of a pivot mechanism for removing a housing according to an embodiment of the invention. FIG. 6 and FIG. 7 are schematic diagrams of the first cam and the second cam in different operation stages according to an embodiment of the present invention. FIG. 8 is a schematic diagram of the connecting rod group in the first state according to an embodiment of the present invention. FIG. 9 is a schematic diagram of the connecting rod group in the second state according to an embodiment of the present invention. FIG. 10 is a schematic view of the link group shown in FIG. 8 from another perspective. FIG. 11 is a schematic view of the link group shown in FIG. 9 from another perspective. 12 to 15 are schematic diagrams of the pivot mechanism at different opening and closing angles according to the embodiment of the present invention. Fig. 16 is a schematic diagram of an electronic control device according to a first embodiment of the invention. FIG. 17 is a schematic diagram of the height adjustment mechanism of the first embodiment of the present invention. FIG. 18 is a schematic diagram of an electronic control device according to a second embodiment of the invention. Figure 19 is an exploded view of the components of the height adjustment mechanism of the second embodiment of the present invention. FIG. 20 is an assembly diagram of the height adjustment mechanism of the second embodiment of the invention.

12‧‧‧Pivot mechanism

16‧‧‧The first shaft

18‧‧‧Bridge

20‧‧‧First connector

22‧‧‧Link

24‧‧‧Support

26‧‧‧stop

28‧‧‧The first elastic element

30‧‧‧second shaft

32‧‧‧Second connector

34‧‧‧ First cam

36‧‧‧Body

38‧‧‧slider

40‧‧‧Second cam

42‧‧‧Chute

48‧‧‧ First connecting rod

50‧‧‧Second Link

58‧‧‧The third link

60‧‧‧Second elastic element

62‧‧‧The first hub

64‧‧‧The second hub

66‧‧‧The third hub

68‧‧‧torsion element

70‧‧‧The first active part

72‧‧‧Second initiative

74‧‧‧The first passive part

76‧‧‧The second passive part

78‧‧‧Housing

Claims (16)

A pivot mechanism for changing the state of a lifting button includes: a first rotating shaft; a bridge member pivotally connected to the first rotating shaft, the bridge member having a first cam; a first connecting member; a coupling The lever set is connected to the lifting button and is rotatably provided on the first connecting member; The slider is connected to the connecting rod set, and the second cam is movable against the first cam; wherein, when the bridge member turns from a first angle to a second angle, the second cam is pushed through the first cam The support member is moved along the first rotation axis, and the connecting rod set is pulled from the first state to a second state via the slider, thereby adjusting the height of the lifting button. The pivot mechanism according to claim 1, wherein the second cam includes an adjacent protruding portion and a flat portion, and the first cam slides from the flat portion to the protruding portion, so that the support member The first position slides to a second position. The pivot mechanism according to claim 2, wherein a width of one of the flat parts is four times the width of one of the protrusions. The pivot mechanism according to claim 2, further comprising: a stopper disposed at one end of the first rotating shaft; and a first elastic element, both ends of the first elastic element are respectively connected to the stopper With the support, an elastic restoring force of the first elastic element is used to push the support from the second position back to the first position. The pivot mechanism according to claim 1, wherein the first connecting member has a sliding slot, and the sliding tip is movably disposed in the sliding slot. The pivot mechanism according to claim 1, wherein the link group includes a first link and a second link, the first link has a first end, a second end and a turning connected At the end, the turning end is pivotally connected to the first connecting member, the first end is connected to the sliding tip, and the second end is connected to the lifting button via the second link. The pivot mechanism according to claim 6, wherein the link group further includes a third link, disposed between the first link and the second link, for guiding the second link along A movement in the first direction. The pivot mechanism according to claim 6, wherein the link group further includes a second elastic element, both ends of which are respectively connected to the first link and the first connecting member, and one of the second elastic elements is elastically restored The force is used to push the link group from the second state to the first state. The pivot mechanism according to claim 1, further comprising: a second rotating shaft pivotally connected to the bridge member; and a second connecting member disposed on the second rotating shaft. The pivot mechanism according to claim 9, further comprising: a first pivot member connected to the first rotating shaft, the first pivot member having a first active member; a second pivot member connected to the second rotating shaft , The second pivot piece has a first passive piece; and a third pivot piece has a second active piece and a second passive piece, and is located between the first pivot piece and the second pivot piece, the The second active part cooperates with the first active part, and the second passive part cooperates with the first passive part. The pivot mechanism according to claim 10, further includes: a plurality of torsion elements disposed on the first pivot member and the second pivot member. A height adjustment mechanism for changing the state of a lifting button includes: a base; a first linking member, which is movably arranged on the base and fixed to the lifting button; a second linking member, which is movably connected to the first A linking member; and a motor, electrically connected to the second linking member, for driving the second linking member to rotate, and pulling the first linking member to generate a displacement relative to the base to adjust the height of the lifting button. The height adjustment mechanism according to claim 12, which is applied to an electronic control device having a first casing and a second casing, the height adjustment mechanism further includes a sensor and an arithmetic processor, the The sensor is used to detect the relative movement of the first housing and the second housing, and the arithmetic processor is electrically connected to the sensor and the motor, and is used to determine whether the sensor is in accordance with a sensing result of the sensor Send the motor. The height adjustment mechanism according to claim 12, wherein the first linking member has a strip-shaped groove, the second linking member has a strip-shaped engaging portion, and the strip-shaped engaging portion is engaged with the strip-shaped groove. The height adjustment mechanism according to claim 12, wherein the first linking member has a trajectory, the second linking member has a flange portion, and the flange portion is in sliding contact with the trajectory. The height adjustment mechanism according to claim 15, wherein the second linking member is rotatably disposed on a shaft center, the shaft center has a limiting portion, and the second linking member has a limiting groove, the limiting position The slot is engaged with the limiting portion to limit the rotation of the second linking member relative to the axis.

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