A lifting and folding button and a lifting button assembly having the button

Abstract

The present invention relates to the field of key technology, and in particular to a key that can be lifted and retracted and a lifting key assembly having the key, which includes a base, a movable bracket and a keycap, wherein the base includes a key-lifting plate, a fixed plate and a movable plate arranged in sequence from top to bottom, the key-lifting plate is slidably arranged above the fixed plate, and the movable plate is slidably arranged below the fixed plate; the movable bracket includes a first bracket and a second bracket, one end of the first bracket is hinged to the fixed plate, and the other end of the first bracket is hinged to the keycap; one end of the second bracket is hinged to the movable plate, and the other end of the second bracket is hinged to the keycap; a lifting block is convexly provided on one side of the key-lifting plate close to the keycap. The present invention makes the keyboard thinner by realizing the lifting of the keycap, so that the key does not need to shorten the stroke of the key when in use, so that the key maintains the original comfort and feedback, while achieving the thinning of the keyboard and reducing the failure rate of the key.

Description

Technical Field

[0001] The present invention relates to the technical field of buttons, and in particular to a liftable and foldable button and a liftable button assembly having the button. Background Art

[0002] At present, ultra-light and ultra-thin have become the main development direction of current laptop computers, which is mainly reflected in the fact that laptop computers are becoming thinner and thinner. In order to reduce the height of the keyboard, many manufacturers have replaced the keyboards with keyboards with shorter key strokes instead of keyboards with long strokes. However, after the key stroke is shortened, the keys are not comfortable to press, the touch is not good, and the feedback is insufficient. For example: Apple's MacBook Pro uses a keyboard with butterfly feet. Although the key stroke is shortened and the height of the keyboard is reduced, consumers generally report that the keys feel bad. Moreover, because the butterfly foot design is too precise, as long as there is a little dust or hair falling into the keyboard, it will cause serious malfunctions and affect the normal use of the computer. Therefore, the defects of the technical solution of reducing the key stroke to achieve keyboard thinning are very obvious, and an effective solution is urgently needed. Summary of the invention

[0003] The purpose of the present invention is to provide a key with a simple and compact structure, which can be lifted, retracted and retracted, and has stable and reliable lifting and lowering, in view of the shortcomings of the prior art. The key adopts a key lifting method to reduce the thickness of the keyboard, and the key feedback feel is good; at the same time, the present invention also provides a lifting key assembly.

[0004] In order to achieve the above object, the present invention adopts the following technical solution:

[0005] The present invention provides a liftable and foldable key, which includes a base, a movable bracket and a keycap, wherein the base includes a key-lifting plate, a fixed plate and a movable plate arranged in sequence from top to bottom, the key-lifting plate is slidably arranged above the fixed plate, and the movable plate is slidably arranged below the fixed plate; the movable bracket includes a first bracket and a second bracket, one end of the first bracket is hinged to the fixed plate, and the other end of the first bracket is hinged to the keycap; one end of the second bracket is hinged to the movable plate, and the other end of the second bracket is hinged to the keycap; a lifting block is convexly provided on one side of the key-lifting plate close to the keycap.

[0006] Wherein, the movable bracket also includes a reset elastic member, one end of the reset elastic member is connected to an end of the first bracket close to the keycap, and the other end of the reset elastic member is connected to the keycap; or the two ends of the reset elastic member are respectively connected to the first bracket and the second bracket.

[0007] Among them, the first bracket is provided with an insert block and a slot on both sides, and the second bracket is provided with an insert block and a slot on both sides. The insert block of the first bracket cooperates with the slot of the second bracket, and the slot of the first bracket cooperates with the insert block of the second bracket.

[0008] The liftable and foldable key further comprises a balance bar, one end of which is hinged to a fixed plate, and the other end of which is movably connected to a key cap.

[0009] Wherein, the base also includes a switch circuit board arranged below the movable plate, a trigger switch is arranged on the switch circuit board, and a trigger member is arranged on the key cap, the first bracket or the second bracket, and the trigger member is used to trigger the trigger switch.

[0010] The base further comprises an auxiliary plate arranged below the movable plate, and a reset spring-up member for springing up the pressed keycap is arranged at a position of the auxiliary plate corresponding to the keycap.

[0011] Wherein, the movable bracket also includes a keycap pop-up member, which is arranged between the keycap and the fixed plate, one end of the keycap pop-up member contacts the keycap, and the other end of the keycap pop-up member contacts the fixed plate.

[0012] A lifting button assembly, which includes the aforementioned liftable and foldable button and a lifting drive mechanism for driving the button to lift and lower, the lifting drive mechanism including a sliding block, a first moving rod and a second moving rod, both of which are slidably arranged on one side of a base, the first moving rod and the second moving rod are both cross-arranged with the sliding block; the sliding block is provided with a first oblique sliding groove and a second oblique sliding groove, the first moving rod is slidably connected to the sliding block via a sliding fit between a sliding member and the first oblique sliding groove, and the second moving rod is slidably connected to the sliding block via a sliding fit between a sliding member and the second oblique sliding groove; the end of the first moving rod away from the sliding block is connected to a key lifting plate, and the end of the second moving rod away from the sliding block is connected to a moving plate.

[0013] Wherein, the lifting drive mechanism further includes a first guide component for guiding the movement of the sliding block and a second guide component for guiding the movement of the first moving rod and the second moving rod.

[0014] Furthermore, the lifting drive mechanism also includes a third guide component for guiding the movement of the key plate and / or the movement of the moving plate.

[0015] Beneficial effects of the present invention:

[0016] The present invention provides a liftable and retractable key, which drives a key plate and a movable plate to move in the same direction. The movement of the movable plate can pull the second bracket to rotate upward or downward, and the rotating second bracket can drive the keycap to be lifted and lowered. At the same time, the lifting and lowering of the keycap also drives the rotation of the first bracket, so that the keycap can be lifted and lowered smoothly under the support of the first bracket; at the same time, when the keycap is pressed, it can improve the feedback of the key and the comfort of the user's key pressing under the movable support of the first bracket and the second bracket. Thus, when the key is to be used, the key plate and the moving plate are driven to move synchronously to the right, and the moving key plate drives the lifting block to move and makes the lifting block contact with the keycap, thereby lifting the keycap; while the keycap is lifted, the moving plate drives the second bracket to rotate upward, and the rotating second bracket drives the keycap and the first bracket to rise synchronously, so that the keycap can be used by the user; when the key is not in use, the moving plate is driven to move to the left, and the moving plate drives the second bracket to rotate downward, and the rotating second bracket drives the keycap to descend until the keycap descends to the folded state, thereby reducing the thickness of the keyboard and making the keyboard thinner. The embodiments of the present invention achieve the thinning of the keyboard by realizing the lifting of the keycap, thereby eliminating the need to shorten the stroke of the key when the key is in use, thereby maintaining the original comfort and feedback of the key while achieving the thinning of the keyboard and reducing the failure rate of the key. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the structure of the lifting button assembly of the present invention, in which a is a schematic diagram of the button in use, and b is a schematic diagram of the button in a folded state;

[0018] Figure 2 This is a schematic diagram of the structure of the lifting key assembly of the present invention after the key cap is hidden;

[0019] Figure 3 It is a schematic diagram of the exploded structure of the base of the present invention;

[0020] Figure 4 It is a structural schematic diagram of the key cap, movable bracket and balance bar of the present invention during assembly;

[0021] Figure 5 It is a structural schematic diagram of the movable bracket of the present invention;

[0022] Figure 6 It is a structural schematic diagram of the lifting drive mechanism of the present invention when the key is in use;

[0023] Figure 7 Schematic diagram of the process of pressing a key of the present invention, wherein c is a schematic diagram of the structure before the key cap is pressed, and d is a schematic diagram of the structure after the key cap is pressed;

[0024] Figure 8 It is a structural schematic diagram of the lifting drive mechanism of the present invention when the key is in a folded state;

[0025] Fig. 9 is a schematic structural diagram of the keycap of the present invention in a folded state;

[0026] Fig.10 Schematic diagram of the process of the keycap of the present invention being converted from a folded state to a use state, wherein e is a structural schematic diagram of the keycap in the folded state, f is a structural schematic diagram of the keycap when the lifting block contacts the keycap, and g is a structural schematic diagram of the keycap when it rises to the use state;

[0027] Fig.11 It is a schematic diagram of the exploded structure of the first bracket and the second bracket of the present invention;

[0028] Fig.12 A schematic diagram of the exploded structure of the first bracket and the second bracket of the present invention from another perspective;

[0029] Fig.13 1 is a schematic diagram of another process of converting the keycap of the present invention from the folded state to the use state, wherein h is a schematic diagram of the structure of the keycap in the folded state, i is a schematic diagram of the structure when the lifting block abuts against the first bracket, and j is a schematic diagram of the structure when the keycap rises to the use state;

[0030] Fig.14 It is a structural schematic diagram of one of the second embodiments of the lifting button assembly of the present invention;

[0031] Fig.15 Another structural schematic diagram of the second embodiment of the lifting button assembly of the present invention.

[0032] Description of Reference Numerals

[0033] 1. Base; 2. Lifting drive mechanism; 3. Movable bracket; 4. Keycap; 5. Balance bar; 11. Key lifting plate; 12. Fixed plate; 13. Moving plate; 14. Auxiliary plate; 15. Switch circuit board; 111. Lifting block; 112. Slope surface; 141. Reset spring-up member; 151. Switch contact; 21. Sliding block; 22. First moving rod; 23. Second moving rod; 211. First oblique line slide groove; 212. Second oblique line slide groove; 213. Pulling block; 241. First guide bearing; 242. Second guide bearing; 243. Third guide bearing; 244. Sliding lug; 31. First bracket; 32. Second bracket; 33. Reset elastic member; 311. Insert block; 312. Slot; 321. Protrusion; 41. Inclined surface; 42. Hook; 43. Snap buckle; 44. Avoiding slide groove; 45. Keycap spring-up member. DETAILED DESCRIPTION

[0034] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with the embodiments and drawings, and the contents mentioned in the embodiments are not intended to limit the present invention. The present invention is described in detail below in conjunction with the drawings.

[0035] Embodiment 1.

[0036] like Figures 1 to 13 As shown, a key that can be raised and lowered and retracted provided by the present invention includes a base 1, a movable bracket 3 and a keycap 4. The base 1 includes a key-starting plate 11, a fixed plate 12 and a movable plate 13 arranged in sequence from top to bottom. The key-starting plate 11 is slidably arranged above the fixed plate 12, and the movable plate 13 is slidably arranged below the fixed plate 12; the movable bracket 3 includes a first bracket 31 and a second bracket 32, one end of the first bracket 31 is hinged to the fixed plate 12, and the other end of the first bracket 31 is hinged to the keycap 4; one end of the second bracket 32 ​​is hinged to the movable plate 13, and the other end of the second bracket 32 ​​is hinged to the keycap 4; a lifting block 111 is convexly provided on one side of the key-starting plate 11 close to the keycap 4. Specifically, the lifting block 111 is used to contact with the keycap 4 and lift the keycap 4; or the lifting block 111 is used to contact with the first bracket 31 and lift the first bracket 31.

[0037] In actual application, the key plate 11 and the movable plate 13 move in the same direction, and the movement of the movable plate 13 can pull the second bracket 32 ​​to rotate upward or downward, and the rotating second bracket 32 ​​can drive the keycap 4 to rise and fall. At the same time, the lifting and lowering of the keycap 4 also drives the rotation of the first bracket 31, so that the keycap 4 can be lifted and lowered smoothly under the support of the first bracket 31; at the same time, when the keycap 4 is pressed, it can improve the feedback of the key and the comfort of the user's key pressing under the movable support of the first bracket 31 and the second bracket 32. Therefore, when the key is to be used, the key plate 11 and the movable plate 13 are driven to move to the right, and the movable key plate 11 drives the lifting block 111 to move and make the lifting block 111 contact with the keycap 4, thereby lifting the keycap 4; or, the movable key plate 11 drives the lifting block 111 to move and make the lifting block 111 contact with the first bracket 31, thereby lifting the first bracket 31 to realize that the keycap 4 is lifted; after the keycap 4 is lifted, the movable plate 13 drives the second bracket 32 ​​to rotate upward, and the rotating second bracket 32 ​​drives the keycap 4 and the first bracket 31 to rise synchronously, so that the keycap 4 is available for the user to use; when the key is not in use, the movable plate 13 is driven to move to the left, and the movable plate 13 drives the second bracket 32 ​​to rotate downward, and the rotating second bracket 32 ​​drives the keycap 4 to descend until the keycap 4 descends to the folded state, thereby reducing the thickness of the keyboard, so as to make the keyboard thinner. Fig.10As shown, when the keycap 4 is in the folded state, the first bracket 31 and the second bracket 32 ​​are in the same horizontal straight line, thereby forming a self-locking force on the keycap 4. In this state, if only the movable plate 13 is pulled, the second bracket 32 ​​cannot be pulled up. Therefore, in this embodiment, the key plate 11 must first be used to drive the lifting block 111 to move, so that the lifting block 111 generates an upward thrust on the keycap 4. The lifting block 111 lifts the keycap 4, and the rising of the keycap 4 drives the second bracket 32 ​​to rotate upward; or, as Fig.13 As shown, the lifting block 111 is driven to move, so that the lifting block 111 contacts the first bracket 31, thereby generating an upward thrust on the first bracket 31 to lift the first bracket 31; through the above two methods, the second bracket 32 ​​is not on the same horizontal line as the first bracket 31, so that the moving plate 13 pulls the second bracket 32 ​​to continue to move and rotate the second bracket 32 ​​upward until the keycap 4 rises to the use state. The embodiment of the present invention makes the keyboard thinner by realizing the lifting and lowering of the keycap 4, so that the key does not need to shorten the stroke of the key when it is used, so that the key maintains the original comfort and feedback, while achieving the thinning of the keyboard and reducing the failure rate of the key.

[0038] Preferably, the keycap 4 is provided with an inclined surface 41 on one side close to the lifting block 111, and the top of the lifting block 111 is provided with an inclined surface 112 that matches the inclined surface 41 of the keycap 4. The keycap 4 can be lifted up easily and labor-savingly by the lifting block 111 through the inclined surface sliding structural design. Similarly, the lifting block 111 can also contact the first bracket 31 through the inclined surface 112 to lift the first bracket 31, thereby lifting the keycap 4.

[0039] As a preferred example, Figure 2 As shown, the shape of the first bracket 31 and the shape of the second bracket 32 ​​are both U-shaped, and the first bracket 31 and the second bracket 32 ​​are arranged crosswise. The open end of the first bracket 31 is hinged to the fixed plate 12, and the top cross bar of the first bracket 31 is rotatably connected to the keycap 4 via the snap buckle 43; the open end of the second bracket 32 ​​is hinged to the movable plate 13, and the top cross bar of the second bracket 32 ​​is rotatably connected to the keycap 4 via the snap buckle.

[0040] In the present technical solution, the movable bracket 3 further includes a reset elastic member 33, one end of which is connected to one end of the first bracket 31 close to the keycap 4, and the other end of the reset elastic member 33 is connected to the keycap 4; or the two ends of the reset elastic member 33 are respectively connected to the first bracket 31 and the second bracket 32. Preferably, the reset elastic member 33 can adopt an existing spring; in the present embodiment, one end of the reset elastic member 33 is connected to one end of the keycap 4 via a hook 42, and the other end of the reset elastic member 33 is connected to the first bracket 31. Specifically, the snap-on buckle 43 rotatably connected to the first bracket 31 is provided with an avoidance slide 44 for the top of the first bracket 31 to slide; the avoidance slide 44 is designed to provide an avoidance space for the sliding of the first bracket 31. At the same time, the bottom of the snap-on buckle 43 is provided with an inclined surface 41 that matches the inclined surface 112 of the lifting block 111.

[0041] In actual application, after the key cap 4 rises to the highest point, the key cap 4 is in use. Figure 7 As shown, after the user presses the keycap 4, when the moving plate 13 is in a stationary state, the second bracket 32 ​​only rotates downward, and the keycap 4 descends with the downward rotation of the second bracket 32. At this time, the first bracket 31 slides in the avoidance slot 44 of the snap buckle 43 in a direction away from the second bracket 32, so that the end of the first bracket 31 close to the keycap 4 also rotates downward with the descent of the keycap 4 while moving, that is, the avoidance slot 44 provides an avoidance space for the downward rotation of the first bracket 31, so that the keycap 4 can be pressed when the moving plate 13 is stationary; the movement of the first bracket 31 causes the reset elastic member 33 to be stretched and store elastic potential energy; when the keycap 4 is released and pressed, the reset elastic member 33 releases its stored elastic potential energy and shrinks, and the shrinking reset elastic member 33 pulls the first bracket 31 to rotate upward, thereby driving the keycap 4 to reset to the initial position. The design of this structure is simple and compact, which makes the keycap 4 work stably and reliably, and can further improve the feedback of the keycap 4.

[0042] In an embodiment of the present invention, Figure 7 Figure c and Fig. 9As shown, when the keycap 4 is in the process of descending and folding, the movable plate 13 drives the bottom of the second bracket 32 ​​to move leftward and causes the second bracket 32 ​​to rotate downward, and the second bracket 32 ​​rotating downward drives the keycap 4 to descend; during the descending process of the keycap 4, the first bracket 31 is under the action of the reset elastic member 33 so that one end of the first bracket 31 is always in contact with the snap buckle 43, so that the distance between the upper end of the first bracket 31 and the upper end of the second bracket 32 ​​remains unchanged; at the same time, when the first bracket 31 pulls the keycap 4 to descend, the first bracket 31 does not move, that is, the reset elastic member 33 does not appear to be stretched, so that the reset elastic member 33 does not generate a pulling force on the first bracket 31, thereby, the keycap 4 can be lifted or lowered without much resistance, so that the keycap 4 can be easily and labor-savingly lifted and retracted.

[0043] In the technical solution, the first bracket 31 is provided with an insert block 311 and a slot 312 on both sides, and the second bracket 32 ​​is provided with an insert block 311 and a slot 312 on both sides. The insert block 311 of the first bracket 31 cooperates with the slot 312 of the second bracket 32; the slot 312 of the first bracket 31 cooperates with the insert block 311 of the second bracket 32. Specifically, Fig.11 and Fig.12 As shown, the insert block 311 and the slot 312 are respectively arranged on the inner side walls of the two side bars of the U-shaped first bracket 31 and the outer side walls of the two side bars of the U-shaped second bracket 32. The insert block 311 of the first bracket 31 is arranged corresponding to the slot 312 of the second bracket 32. The slot 312 is trumpet-shaped.

[0044] In practical applications, the first bracket 31 and the second bracket 32 ​​are arranged crosswise, so that the insert block 311 of the first bracket 31 is inserted into the slot 312 of the second bracket 32, and at the same time, the insert block 311 of the second bracket 32 ​​is also inserted into the slot 312 of the first bracket 31. When the second bracket 32 ​​rotates, the insert block 311 is driven to rotate, and the rotating insert block 311 contacts the groove wall of the slot 312 of the first bracket 31 and thereby drives the first bracket 31 to rotate synchronously, so that the rotation of the first bracket 31 and the second bracket 32 ​​is more accurate, and the stability and accuracy of the lifting and lowering of the keycap 4 are improved. The design of this structure is simple and compact, and the operation is stable and reliable.

[0045] In the technical solution, the key that can be raised and lowered and retracted further includes a balance bar 5, one end of which is hinged to the fixing plate 12, and the other end of which is movably connected to the keycap 4. Specifically, the end of the balance bar 5 close to the keycap 4 is rotatably buckled with the keycap 4 via an open buckle. The shape of the balance bar 5 is U-shaped. In actual application, the balance bar 5 rotates upward or downward following the lifting of the keycap 4, and the rotating balance bar 5 is used to provide a balancing support force for the keycap 4 to ensure the working stability of the keycap 4 and avoid the problem of the keycap 4 being skewed, stuck or in poor contact when being pressed.

[0046] In the present technical solution, the base 1 further comprises a switch circuit board 15 disposed below the moving plate 13, a trigger switch is disposed on the switch circuit board 15, and a trigger member is disposed on the key cap 4, the first bracket 31 or the second bracket 32, and the trigger member is used to trigger the trigger switch. Preferably, the trigger switch can be a membrane switch, an optical coupling switch, a mechanical switch or a magnetic induction switch, etc. When the trigger switch is a magnetic induction switch, the trigger member is a magnet that matches the magnetic induction switch.

[0047] In this embodiment, the trigger switch is a membrane switch, and a switch contact 151 is provided on the membrane switch. The trigger member is a protrusion 321 provided on the second bracket 32. Figure 7 As shown, when the key cap 4 is pressed, the key cap 4 drives the second bracket 32 ​​to rotate downward, and the second bracket 32 ​​that rotates downward drives the protrusion 321 to descend until the protrusion 321 descends to contact the switch contact 151 of the switch circuit board 15, so that the switch circuit board 15 sends a trigger signal to realize the input function of the key. Fig.10 As shown, when the keycap 4 is lowered and folded, the movable plate 13 is driven to move to the left, and the moving movable plate 13 pulls the bottom of the second bracket 32 ​​to move to the left, so that the top of the second bracket 32 ​​rotates downward; the second bracket 32 ​​moving to the left drives the protrusion 321 to move away from the switch contact 151, so that after the second bracket 32 ​​rotates downward, the protrusion 321 of the second bracket 32 ​​does not contact the switch contact 151, thereby preventing the keycap 4 from touching the switch contact 151 when folded.

[0048] In the present technical solution, the base 1 further comprises an auxiliary plate 14 disposed below the movable plate 13, and a reset spring-up member 141 is disposed at a position of the auxiliary plate 14 corresponding to the keycap 4 for springing up the pressed keycap 4. Preferably, the reset spring-up member 141 may be an elastic sheet or a spring; the shape of the elastic sheet may be a sheet or other shapes.

[0049] In actual application, after the keycap 4 is pressed, the lower side of the second bracket 32 ​​near the end of the keycap 4 contacts the reset spring-up member 141 and presses down the reset spring-up member 141. After the keycap 4 is released from being pressed, the reset spring-up member 141 will bounce the second bracket 32 ​​upward, so that the first bracket 31 and the second bracket 32 ​​are no longer in the same horizontal straight line, so that the first bracket 31 and the second bracket 32 ​​can rotate close to each other under the pulling force of the reset elastic member 33 until the keycap 4 is lifted. Alternatively, after the keycap 4 is pressed, the bottom surface of the keycap 4 contacts the reset spring-up member 141 and presses down the reset spring-up member 141. After the keycap 4 is released from being pressed, the reset spring-up member 141 will directly bounce up the keycap 4.

[0050] Implementation 2.

[0051] The difference between this embodiment and the first embodiment is that: Fig.14 and Fig.15 , the movable bracket 3 also includes a keycap pop-up member 45, the keycap pop-up member 45 is arranged between the keycap 4 and the fixed plate 12, one end of the keycap pop-up member 45 contacts the keycap 4, and the other end of the keycap pop-up member 45 contacts the fixed plate 12. Specifically, the keycap pop-up member 45 can be installed on the fixed plate 12, or on the keycap 4; the keycap pop-up member 45 is a spring. In practical applications, when the keycap 4 is pressed, the keycap 4 presses down the keycap pop-up member 45, so that the keycap pop-up member 45 reserves elastic potential energy; after the keycap 4 is released from being pressed, the keycap pop-up member 45 pops up the second bracket 32, so that the first bracket 31 and the second bracket 32 ​​are no longer in the same horizontal straight line, so that the first bracket 31 and the second bracket 32 ​​can rotate close to each other under the pulling force of the reset elastic member 33 until the keycap 4 is lifted.

[0052] The rest of this embodiment is the same as the first embodiment. The features not explained in this embodiment are all based on the explanations in the first embodiment and will not be described in detail here.

[0053] The present invention also provides a lifting button assembly, which includes the aforementioned liftable and retractable button and a lifting drive mechanism 2 for driving the button to lift and lower, the lifting drive mechanism 2 including a sliding block 21, a first moving rod 22 and a second moving rod 23, both of which are slidably arranged on one side of the base 1, the first moving rod 22 and the second moving rod 23 are both cross-arranged with the sliding block 21; the sliding block 21 is provided with a first oblique groove 211 and a second oblique groove 212, the first moving rod 22 is slidably connected to the sliding block 21 via the sliding cooperation between the sliding member and the first oblique groove 211, the second moving rod 23 is slidably connected to the sliding block 21 via the sliding cooperation between the sliding member and the second oblique groove 212; the end of the first moving rod 22 away from the sliding block 21 is connected to the key lifting plate 11, and the end of the second moving rod 23 away from the sliding block 21 is connected to the moving plate 13.

[0054] In practical applications, the keys and the lifting drive mechanism 2 are both mounted on the keyboard; Figure 6 and Figure 8 As shown, when the keyboard is used to press a key, the sliding block 21 is pulled to move to the left, and the sliding block 21 moving to the left drives the first oblique slot 211 and the second oblique slot 212 to move synchronously. The moving first oblique slot 211 and the second oblique slot 212 drive the first moving rod 22 and the second moving rod 23 to move away from the fixed plate 12 through the action of the sliding member. At this time, the movement of the first moving rod 22 pulls the key-lifting plate 11 to move, and the moving key-lifting plate 11 drives the lifting block 111 to contact with the keycap 4, or the lifting block 111 to contact with the first bracket 31, thereby The keycap 4 is lifted up; the movement of the second moving rod 23 pulls the moving plate 13 to move, and the moving moving plate 13 drives the bottom end of the second bracket 32 ​​to move, so that the second bracket 32 ​​rotates upward, and the second bracket 32 ​​rotating upward drives the keycap 4 to rise to the use state; on the contrary, when the keyboard stores the keys, the sliding block 21 is pulled to move rightward, thereby driving the first moving rod 22 and the second moving rod 23 to move in the direction close to the fixed plate 12 at the same time, at this time, the moving plate 13 drives the second bracket 32 ​​to rotate downward, and the second bracket 32 ​​rotating downward drives the keycap 4 to descend to the folded state. The structural design of the lifting drive mechanism 2 is simple and compact, and the operation is simple, fast, and easy and labor-saving.

[0055] Preferably, a pulling block 213 for a user to pull is provided on the sliding block 21. In practical applications, the user can pull the pulling block 213 to drive the sliding block 21 to slide. In addition, the sliding block 21 can also be driven by other mechanical linkage mechanisms such as wire pulling, or driven by a motor drive mechanism.

[0056] In the present technical solution, the lifting drive mechanism 2 further includes a first guide assembly for guiding the movement of the sliding block 21 and a second guide assembly for guiding the movement of the first moving rod 22 and the second moving rod 23 .

[0057] Preferably, the first guide assembly and the second guide assembly can be structures such as bearing assemblies, guide blocks installed on both sides of the sliding block 21, or slide rails slidably matched with the sliding block 21; the slide rails can be slide rails commonly used in drawers.

[0058] In this embodiment, the first guide assembly is a plurality of first guide bearings 241, and the second guide assembly is a plurality of second guide bearings 242. The plurality of first guide bearings 241 are respectively arranged along the two sides of the moving direction of the sliding block 21 and are in sliding contact with the side of the sliding block 21; the plurality of second guide bearings 242 are respectively arranged along the two sides of the moving direction of the first moving rod 22 and are in sliding contact with the side of the first moving rod 22, and are respectively arranged along the two sides of the moving direction of the second moving rod 23 and are in sliding contact with the side of the second moving rod 23. The plurality of first guide bearings 241 are respectively arranged in a straight line on both sides of the sliding block 21, thereby forming a track for the sliding block 21 to slide, and under the action of the first guide bearings 241, the sliding block 21 can slide more stably and smoothly; similarly, the role of the plurality of second guide bearings 242 is the same as that of the first guide bearings 241, so as to ensure that the first moving rod 22 and the second moving rod 23 can both move stably and smoothly.

[0059] In the present technical solution, the lifting drive mechanism 2 further includes a third guide assembly for guiding the movement of the key plate 11 and / or the movement of the moving plate. Preferably, the third guide assembly can be a bearing assembly, a guide block or a slide rail.

[0060] In this embodiment, the third guide assembly includes a plurality of third guide bearings 243, which are respectively arranged on both sides of the key lifting plate 11 and both sides of the moving plate 13, and both sides of the key lifting plate 11 and both sides of the moving plate 13 are convexly provided with sliding lugs 244 that slide against the third guide bearings 243. In practical applications, the functions of the plurality of second guide bearings 242 are the same as those of the first guide bearings 241, which are used to ensure the movement stability and accuracy of the key lifting plate 11 and the moving plate 13, and further improve the stability of the lifting and lowering of the key cap 4.

[0061] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention is disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent changes and modifications made to the above embodiments according to the technology of the present invention are within the scope of the technical solution of the present invention without departing from the content of the technical solution of the present invention.

Claims

1. A lifting button assembly, characterized in that: It comprises a liftable and foldable key and a lift driving mechanism for driving the key to lift and lower, the liftable and foldable key comprises a base, a movable bracket and a keycap, the base comprises a key-starting plate, a fixed plate and a movable plate arranged in sequence from top to bottom, the key-starting plate is slidably arranged above the fixed plate, and the movable plate is slidably arranged below the fixed plate; the movable bracket comprises a first bracket and a second bracket, one end of the first bracket is hinged to the fixed plate, and the other end of the first bracket is hinged to the keycap; one end of the second bracket is hinged to the movable plate, and the other end of the second bracket is hinged to the keycap; a lifting block is convexly provided on one side of the key-starting plate close to the keycap; The lifting drive mechanism includes a sliding block, a first moving rod and a second moving rod, which are all slidably arranged on one side of the base, and the first moving rod and the second moving rod are both arranged crosswise with the sliding block; the sliding block is provided with a first oblique sliding groove and a second oblique sliding groove, the first moving rod is slidably connected to the sliding block via the sliding cooperation between the sliding member and the first oblique sliding groove, and the second moving rod is slidably connected to the sliding block via the sliding cooperation between the sliding member and the second oblique sliding groove; the end of the first moving rod away from the sliding block is connected to the key lifting plate, and the end of the second moving rod away from the sliding block is connected to the moving plate; the key cap is provided with an inclined surface on the side close to the lifting block.

2. The lifting button assembly according to claim 1, characterized in that: The lifting drive mechanism further comprises a first guide assembly for guiding the movement of the sliding block and a second guide assembly for guiding the movement of the first moving rod and the second moving rod.

3. The lifting button assembly according to claim 1, characterized in that: The lifting drive mechanism further comprises a third guide assembly for guiding the movement of the keying plate and / or the movement of the moving plate.

4. The lifting button assembly according to claim 1, characterized in that: The movable bracket also includes a reset elastic member, one end of which is connected to an end of the first bracket close to the keycap, and the other end of the reset elastic member is connected to the keycap; or both ends of the reset elastic member are respectively connected to the first bracket and the second bracket.

5. The lifting button assembly according to claim 1, characterized in that: The first bracket is provided with an insert block and a slot on both sides, and the second bracket is provided with an insert block and a slot on both sides. The insert block of the first bracket cooperates with the slot of the second bracket, and the slot of the first bracket cooperates with the insert block of the second bracket.

6. The lifting button assembly according to claim 1, characterized in that: The liftable and foldable key further comprises a balance bar, one end of which is hinged to the fixing plate, and the other end of which is movably connected to the key cap.

7. The lifting button assembly according to claim 1, characterized in that: The base also includes a switch circuit board arranged below the movable plate, a trigger switch is arranged on the switch circuit board, and a trigger member is arranged on the key cap, the first bracket or the second bracket, and the trigger member is used to trigger the trigger switch.

8. The lifting button assembly according to claim 1, characterized in that: The base further comprises an auxiliary plate arranged below the movable plate, and a reset spring-up member for springing up the pressed keycap is arranged at a position of the auxiliary plate corresponding to the keycap.

9. The lifting button assembly according to claim 1, characterized in that: The movable bracket also includes a keycap pop-up member, which is arranged between the keycap and the fixing plate, one end of the keycap pop-up member abuts against the keycap, and the other end of the keycap pop-up member abuts against the fixing plate.

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