TWI879570B - Key structure - Google Patents

Abstract

A key structure includes a base plate, a keycap, an elastic member, a snap-fit assembly, a second fixing structure, and a connecting member. The keycap includes a first fixing structure. The elastic member includes a restoring portion and a plate portion. The restoring portion has a bottom and a top, with the bottom disposed on the base plate. The plate portion connects to the top of the restoring portion. The snap-fit assembly is disposed on the plate portion facing the base plate. The second fixing structure is disposed on the plate portion or the snap-fit assembly. The second fixing structure is detachably connected to the first fixing structure. The connecting member includes a first frame and a second frame that are pivoted to each other. The opposite ends of the first frame and the second frame are respectively connected to the base plate and the snap-fit assembly.

Description

Key structure

The present invention relates to a key structure, in particular to a key structure with a detachable key cap.

In the current computer usage habits, the keyboard is one of the indispensable input devices. The keyboard is composed of a plurality of key structures. Generally speaking, the key structure is connected to a key cap and a bottom plate by a scissor-type connector, so that the key cap can be raised and lowered relative to the bottom plate.

Generally speaking, the bottom surface of the keycap has a water drop hole structure and a connecting structure such as a slide groove. The scissor-type connector has a plurality of connecting rods to connect to the water drop hole structure and the slide groove respectively. However, when the keycap needs to be disassembled, force is required to remove the connecting rod from the water drop hole structure. In addition to the inconvenience of operation, it may also cause damage to the water drop hole structure, which is necessary for improvement.

In view of the above problems, the main purpose of the present invention is to provide a key structure, which includes an elastic member and a locking assembly. The novel structure of the elastic member and the locking assembly can solve the problem that the key cap of the conventional key structure is inconvenient to disassemble and the connection structure is easily damaged.

In order to achieve the above-mentioned purpose, the present invention provides a key structure, which includes a base plate, a key cap, an elastic member, a snap-fit assembly, a second fixing structure and a connecting assembly. The key cap includes a first fixing structure. The elastic member includes a reset portion and a plate body portion. The reset portion has a bottom and a crown, and the bottom is arranged on the base plate. The plate body portion is connected to the crown of the reset portion. The snap-fit assembly is arranged on the plate body portion and faces the base plate. The second fixing structure is arranged on the plate body portion or the snap-fit assembly. The second fixing structure is detachably connected to the first fixing structure. The connecting assembly includes a first frame and a second frame pivotally connected to each other. The opposite ends of the first frame and the second frame are respectively connected to the base plate and the snap-fit assembly.

According to an embodiment of the present invention, the engaging assembly further includes at least one hinge portion, at least one slide groove and a rib, wherein the rib connects the hinge portion and the slide groove.

According to one embodiment of the present invention, the elastic member and the engaging assembly are integrally formed.

According to one embodiment of the present invention, the elastic member and the engaging assembly are manufactured by insert injection, overmolding, or dual-material injection.

According to an embodiment of the present invention, the reset portion is a dome structure.

According to one embodiment of the present invention, the plate body includes a plurality of holes.

According to an embodiment of the present invention, the elastic member further includes a receiving groove, which is disposed in the plate body and extends to the reset portion. The key cap further includes a conducting column, which is disposed in the receiving groove.

According to an embodiment of the present invention, the elastic member further includes at least one conductive protrusion. The conductive protrusion is disposed on a surface of the plate body facing the bottom plate and close to at least one side of the plate body.

According to one embodiment of the present invention, the hardness of the plate body is greater than the hardness of the return portion.

According to an embodiment of the present invention, the first fixing structure and the second fixing structure are connected to each other by magnetic attraction.

According to an embodiment of the present invention, the first fixing structure and the second fixing structure are respectively a magnet. The first fixing structure is arranged on a bottom surface of the key cap facing the bottom plate, and the second fixing structure is arranged on the engaging assembly.

According to an embodiment of the present invention, the first fixing structure is a locking column. The second fixing structure is a through hole provided in the plate body. The locking column passes through the through hole.

As described above, according to the key structure of the present invention, it includes a base plate, a key cap and its first fixing structure, an elastic member, a snap-fit assembly, a second fixing structure and a connecting assembly. Among them, the elastic member includes a reset portion and a plate portion. The snap-fit assembly is arranged on the plate portion and faces the base plate for assembly with the connecting assembly. The second fixing structure is arranged on the plate portion or the snap-fit assembly and is detachably connected to the first fixing structure. By arranging the snap-fit assembly on the plate portion of the elastic member and assembling the snap-fit assembly with the connecting assembly, the connecting assembly does not need to be connected to the key cap. In addition, the first fixing structure of the key cap and the second fixing structure located on the elastic member or the snap-fit assembly are detachably connected to each other. Therefore, when the key cap needs to be replaced, the key cap can be removed by only releasing the connection between the first fixing structure and the second fixing structure, which is quite convenient. In addition, when the key cap is removed, since the connecting assembly is connected to the clamping assembly, the structure of the clamping assembly will not be damaged.

In order to better understand the technical content of the present invention, a preferred specific embodiment is described as follows.

FIG1 is a schematic diagram of the key structure of the first embodiment of the present invention, FIG2 is an exploded schematic diagram of the key structure shown in FIG1, FIG3 is a schematic diagram of the key cap and elastic member, the snap-fit assembly and the second fixing structure shown in FIG2, and FIG4 is a cross-sectional view of the key cap and the elastic member after being assembled shown in FIG3. Please refer to FIG1, FIG2, FIG3 and FIG4. The key structure 1 of this embodiment includes a base plate 10, a key cap 20, an elastic member 30, a snap-fit assembly 40, and a connecting assembly 50. It should be noted that the base plate 10 drawn in the drawings of this case corresponds to one of the key structures 1. In actual application, multiple key structures 1 correspond to one base plate 10.

As shown in FIG. 3 and FIG. 4 , the key cap 20 includes a first fixing structure 21. Preferably, the first fixing structure 21 is disposed on the bottom surface of the key cap 20 to face the bottom plate 10. Correspondingly, the key structure 1 further includes a second fixing structure 60, which can be disposed on the elastic member 30 or the snap-fit assembly 40. The snap-fit assembly 40 of this embodiment is disposed on the elastic member 30, and the second fixing structure 60 is disposed on the snap-fit assembly 40. In addition, the second fixing structure 60 is detachably connected to the first fixing structure 21, thereby making the key cap 20 detachably connected to the elastic member 30.

As shown in FIG. 4 , the elastic member 30 of the present embodiment includes a return portion 31 and a plate portion 32. The return portion 31 is a dome structure made of rubber, and the return portion 31 has a bottom 311 and a crown 312 opposite to each other. The plate portion 32 is connected to the crown 312 of the return portion 31. In the present embodiment, the return portion 31 and the plate portion 32 are made of the same material, such as rubber material. The plate portion 32 extends outward from the crown 312 of the return portion 31 to form a plate body. The return portion 31 made of rubber material can be deformed when under pressure, and returns to its original shape when not under pressure, so as to provide elastic force for the key cap 20 to return to its original position. The engaging assembly 40 is disposed on the plate portion 32 of the elastic member 30 for connecting to the connecting assembly 50. In other embodiments, the resetting portion 31 and the plate portion 32 of the elastic member 30 may also be made of different materials or different component ratios, so that the hardness of the plate portion 32 where the engaging assembly 40 is disposed is greater than the hardness of the resetting portion 31.

In the present embodiment, the engaging assembly 40 is disposed on the plate body 32 and faces the bottom plate 10. Specifically, the engaging assembly 40 includes at least one hinge portion 41 and at least one slide groove 42, both of which are disposed on the plate body 32 and face the bottom plate 10. Specifically, parts of the hinge portion 41 and the slide groove 42 are disposed on the plate body 32, and the remaining parts protrude from the plate body 32 toward the lower surface of the bottom plate 10. In the present embodiment, the hinge portion 41 can be a water drop hole structure. Since the elastic member 30 is mainly used to provide elastic force for the key cap 20 to return to its original position after being pressed, the engaging assembly 40 is used to assemble with the connecting assembly 50. The two have different functions, so the elastic member 30 and the engaging assembly 40 are made of different materials. For example, the elastic member 30 can be made of rubber material, so that the reset portion 31 can provide elastic force for the key cap 20 to reset. The locking assembly 40 can be made of a plastic material harder than rubber, and is used to connect with the connecting assembly 50.

Preferably, the elastic member 30 and the engaging assembly 40 of the present embodiment are integrally formed. For example, the elastic member 30 and the engaging assembly 40 are simultaneously formed by insert molding, overmolding, or dual-material injection. In the present embodiment, the engaging assembly 40 can be disposed on the plate portion 32 of the elastic member 30 by insert molding. As shown in FIG. 2 and FIG. 3 , preferably, the engaging assembly 40 further includes a rib 43, and the rib 43 connects the hinge portion 41 and the slide groove 42. The rib 43 of the present embodiment is a quadrilateral frame to connect the two hinge portions 41 and the two slide grooves 42 respectively. The ribs 43 can not only increase the structural strength of the hinge 41 and the slide groove 42, but also facilitate the mold design for processes such as embedded injection, overmolding, or dual-material injection.

FIG5 is a schematic cross-sectional view of the key structure shown in FIG1 , please refer to FIG2 and FIG5 . The connection assembly 50 of this embodiment includes a first frame 51 and a second frame 52 that are pivotally connected to each other to form a scissor-type connection assembly. The opposite ends of the first frame 51 and the second frame 52 are connected to the bottom plate 10 and the engaging assembly 40, respectively. Specifically, the opposite ends of the first frame 51 are connected to the bottom plate 10 and the pivoting portion 41, respectively, and the opposite ends of the second frame 52 are connected to the bottom plate 10 and the slide 42, respectively. The bottom plate 10 is provided with a plurality of structures for connecting the first frame 51 and the second frame 52, such as a plurality of hooks (not shown), which is a common structure in the art and will not be described in detail here. In this embodiment, the first frame 51 is an inner frame, one end of which is connected to the bottom plate 10, and the other end is connected to the hinge 41 (such as a water drop hole structure) of the engaging assembly 40. Among them, the end of the first frame 51 connected to the bottom plate 10 is a movable end 511, and the end connected to the hinge 41 is a fixed end 512. The second frame 52 of this embodiment is an outer frame, one end of which is also connected to the bottom plate 10, and the other end is connected to the slide 42 of the engaging assembly 40. Among them, the end of the second frame 52 connected to the bottom plate 10 is a fixed end 521, and the end connected to the slide 42 is a movable end 522.

In addition, the first frame 51 further includes a receiving hole 513, as shown in FIG2. The return portion 31 of the elastic member 30 passes through the receiving hole 513, so that the bottom 311 of the return portion 31 is disposed above the bottom plate 10. When the key cap 20 is pressed or reset, the moving end 511 of the first frame 51 and the moving end 522 of the second frame 52 move on the bottom plate 10 or in the slide groove 42, respectively, thereby driving the key cap 20 to move up and down.

Please refer to FIG. 2, FIG. 3 and FIG. 4. As mentioned above, the second fixing structure 60 of this embodiment is disposed on the engaging assembly 40, and the second fixing structure 60 is detachably connected to the first fixing structure 21, so that the key cap 20 is detachably connected to the elastic member 30. In this embodiment, the key structure 1 has four second fixing structures 60, and they are respectively located on the hinge portion 41 and the slide slot 42. Specifically, the second fixing structure 60 is disposed on the surface (i.e., the upper surface) of the hinge portion 41 and the slide slot 42 facing the key cap 20. Preferably, the upper surface of the hinge portion 41 and the slide slot 42 may also have a groove for accommodating the second fixing structure 60.

Correspondingly, the key cap 20 has four first fixing structures 21, and is disposed on the bottom surface of the key cap 20 facing the bottom plate 10. Moreover, the distribution position of the first fixing structure 21 on the bottom surface of the key cap 20 corresponds to the second fixing structure 60. In other embodiments, the second fixing structure 60 can also be disposed on the plate portion 32 of the elastic member 30, and the position of the first fixing structure 21 only needs to correspond to the second fixing structure 60, and the present invention is not limited thereto.

Preferably, the first fixed structure 21 and the second fixed structure 60 of the present embodiment are connected to each other by magnetic attraction. In the present embodiment, the first fixed structure 21 and the second fixed structure 60 can be a magnet respectively, and the magnetic poles of the surfaces corresponding to each other are opposite to each other so as to attract each other. For example, the side surface of the first fixed structure 21 facing the base plate 10 is an N pole, and the side surface of the second fixed structure 60 facing the key cap 20 is an S pole, so that the first fixed structure 21 and the second fixed structure 60 can be connected to each other by magnetic attraction. The magnetic poles of the first fixed structure 21 and the second fixed structure 60 can also be other configurations, as long as the first fixed structure 21 and the second fixed structure 60 can correspond to each other. In other embodiments, one of the first fixed structure 21 and the second fixed structure 60 can be a magnet, and the other can be a magnetic member. For example, the first fixing structure 21 is a magnet, and the second fixing structure 60 is a magnetic member that can be attracted by the magnet. Alternatively, the first fixing structure 21 can be a magnetic member, and the second fixing structure 60 can be a magnet, and the present invention is not limited thereto.

Therefore, when the key cap 20 needs to be removed, it is only necessary to apply force to move the first fixing structure 21 of the key cap 20 away from the second fixing structure 60 to achieve the effect of removing the key cap 20. When the key cap 20 needs to be assembled, it is only necessary to place the key cap 20 on the plate portion 32 of the elastic member 30, and the key cap 20 can be assembled to the elastic member 30 due to the magnetic force of the first fixing structure 21 and the second fixing structure 60 attracting each other.

By setting the engaging assembly 40 on the plate portion 32 of the elastic member 30 and assembling the engaging assembly 40 with the connecting assembly 50, the connecting assembly 50 does not need to be connected to the key cap 20. The key cap 20 is connected to each other in a detachable manner by the first fixing structure 21 and the second fixing structure 60 located on the elastic member 30 or the engaging assembly 40. Therefore, when the key cap 20 needs to be replaced, it is only necessary to release the connection between the first fixing structure 21 and the second fixing structure 60 to facilitate the removal of the key cap 20. In addition, when the key cap 20 is removed, the engaging assembly 40 is still connected to the connecting assembly 50, so that the structure of the hinge 41 will not be damaged.

In this embodiment, the key structure 1 further includes a circuit board 70, which is disposed above the base plate 10. Similarly, the circuit board 70 drawn in the present embodiment corresponds to one of the key structures 1. In actual application, multiple key structures 1 correspond to one circuit board 70. In addition, the reset portion 31 further includes a trigger portion 313, as shown in Figures 4 and 5. When the key cap 20 is pressed, the reset portion 31 is deformed and the trigger portion 313 moves downward and contacts the circuit board 70 to generate a corresponding trigger signal.

Preferably, the key cap 20 of the present embodiment further includes a conducting column 22. Correspondingly, the elastic member 30 further includes a receiving groove 33. The receiving groove 33 is disposed in the plate body 32 and extends to the crown 312 of the reset portion 31. Specifically, the opening of the receiving groove 33 is located on the surface of the plate body 32, and the groove portion of the receiving groove 33 extends into the crown 312 of the reset portion 31, so that the receiving groove 33 is located above the trigger portion 313. When the key cap 20 is assembled to the elastic member 30, the conducting column 22 can be disposed in the receiving groove 33. When the key cap 20 is pressed, the conductive pillar 22 can further press down the trigger portion 313 to assist the trigger portion 313 to touch the circuit board 70 downwards to ensure that a corresponding trigger signal is generated.

Preferably, the elastic member 30 of this embodiment further includes at least one conductive protrusion 34. The conductive protrusion 34 is disposed on a surface (i.e., the lower surface) of the plate portion 32 facing the bottom plate 10 and is close to at least one side of the plate portion 32. Preferably, the elastic member 30 of this embodiment may include four conductive protrusions 34, and they are respectively located at the four corners (corners) of the plate portion 32. Specifically, the plate portion 32 of this embodiment is only slightly smaller than the bottom surface of the key cap 20. If the conductive protrusion 34 is close to the side or corner of the plate portion 32, it is also close to the bottom of the edge or corner of the key cap 20. When the user presses the edge or corner of the key cap 20, the conductive protrusion 34 can also move downward and contact the circuit board 70 to generate a corresponding trigger signal. In other words, when the edge or corner of the key cap 20 is pressed, the reset portion 31 located in the center may not be able to deform effectively, so that the trigger portion 313 cannot contact the circuit board 70, but the conductive protrusion 34 near the side or corner of the board body 32 can still assist in triggering the circuit board 70.

FIG6 is a schematic diagram of the key structure of the second embodiment of the present invention, and FIG7 is a schematic diagram of the elastic member shown in FIG6 , please refer to FIG6 and FIG7 . The key structure 1a of this embodiment also includes a base plate 10, a key cap 20 and its first fixing structure 21, an elastic member 30a, a snap-fit assembly 40, a connecting assembly 50 and a second fixing structure 60. Among them, the structure and connection relationship of the base plate 10, the key cap 20, the snap-fit assembly 40, the connecting assembly 50 and the second fixing structure 60 are the same as those of the first embodiment, so the component symbols are used. The elastic member 30a of this embodiment also includes a reset portion 31a and a plate body portion 32a. The difference from the aforementioned embodiment is that the plate body portion 32a of this embodiment includes a plurality of holes 321a. Preferably, the holes 321a are symmetrically arranged on the plate body 32a. The plate body 32a of this embodiment has four holes 321a. Taking FIG. 7 as an example, the distribution of the holes 321a enables the plate body 32 to have a short axis 322a and a long axis 323a. In addition, the short axis 322a and the long axis 323a are 90 degrees apart. The holes 321a are symmetrically distributed on the plate body 32a with the short axis 322a as the axis. The plate body 32a has the holes 321a, which can reduce the overall weight of the elastic member 30a and can also serve as space for other structures.

FIG8 is a schematic diagram of the key structure of the third embodiment of the present invention, and FIG9 is a schematic diagram of the elastic member shown in FIG8 , please refer to FIG8 and FIG9 . The key structure 1b of this embodiment also includes a base plate 10, a key cap 20 and its first fixing structure 21, an elastic member 30b, a clamping assembly 40, a connecting assembly 50 and a second fixing structure 60. Among them, the structure and connection relationship of the base plate 10, the key cap 20, the clamping assembly 40, the connecting assembly 50 and the second fixing structure 60 are the same as those of the first embodiment, so the component symbols are used. The elastic member 30b of this embodiment also includes a reset portion 31b and a plate portion 32b, and the plate portion 32b includes a plurality of holes 321b. The difference from the aforementioned embodiment is that the plate portion 32b of this embodiment has four holes 321b. Preferably, the holes 321b of this embodiment are also symmetrically arranged on the plate portion 32a. Taking Figure 9 as an example, the distribution of the holes 321b enables the plate portion 32 to have a short axis 322b and a long axis 323b. The short axis 322b is 90 degrees away from the long axis 323b, and there is a rib 324b between the short axis 322b and the long axis 323b. The holes 321b are symmetrically distributed on the plate portion 32b with the short axis 322b as the axis. Similarly, the plate portion 32b having the holes 321b can reduce the overall weight of the elastic member 30b and can serve as space to make way for other structures.

FIG10 is a schematic diagram of the key structure of the fourth embodiment of the present invention, and FIG11 is a cross-sectional view of the key cap and the elastic member shown in FIG10 after being assembled. Please refer to FIG10 and FIG11. The key structure 1c of this embodiment also includes a base plate 10, a key cap 20c, an elastic member 30c, a snap-fit assembly 40c, a connecting assembly and a second fixing structure 60c. Among them, the structure and connection relationship of the base plate 10 and the connecting assembly are the same as those of the first embodiment, so the base plate 10 continues to use the component symbols, and the connecting assembly is not marked with the component symbols because it is obscured by other components. The elastic member 30c of this embodiment also includes a reset portion 31c and a plate body portion 32c, and the snap-fit assembly 40c is also arranged on the plate body portion 32c of the elastic member 30c. The engaging assembly 40c also has a hinge portion 41c and a slide groove 42c facing the bottom plate 10, and the hinge portion 41c and the slide groove 42c are connected to each other by a rib 43c. The main difference from the above-mentioned embodiment is that the first fixing structure 21c and the second fixing structure 60c of the key cap 20c of this embodiment are different, and the second fixing structure 60c of this embodiment is arranged on the elastic member 30c. Therefore, the upper surfaces of the hinge portion 41c and the slide groove 42c of this embodiment are only connected to the rib 43c, and there is no other structure that matches the second fixing structure 60c.

In the present embodiment, the first fixing structure 21c is a locking column, which includes a head 211c and a rod 212c. One end of the rod 212c is connected to the bottom surface of the key cap 20c, and the head 211c is located at the other end of the rod 212c. Correspondingly, the second fixing structure 60c is a through hole provided in the plate body 32c. The locking column (i.e., the first fixing structure 21c) passes through the through hole (i.e., the second fixing structure 60c), thereby making the second fixing structure 60c detachably connected to the first fixing structure 21c. In the present embodiment, the maximum outer diameter of the first fixing structure 21c is greater than the inner diameter of the second fixing structure 60c (i.e., the through hole). Specifically, the outer diameter of the rod 212c is greater than the inner diameter of the second fixing structure 60c (i.e., the through hole). Since the plate portion 32c of the elastic member 30c is made of rubber material, when the head portion 211c passes through the second fixing structure 60c (i.e., the perforation), the second fixing structure 60c can be expanded first, and after the head portion 211c passes through, the second fixing structure 60c is sleeved on the outer side of the rod portion 212c. On the contrary, when the key cap 20c needs to be removed, it is only necessary to apply force to the key cap 20c in a direction away from the bottom plate 10 so that the head portion 211c moves out of the second fixing structure 60c (i.e., the perforation) in the reverse direction. This connection method of the engaging column and the perforation will not cause any damage to the hinge portion 41c structure of the engaging assembly 40c when the key cap 20c is removed.

In summary, the key structure according to the present invention includes a base plate, a key cap and its first fixing structure, an elastic member, a snap-fit assembly, a second fixing structure and a connecting assembly. The elastic member includes a reset portion and a plate portion. The snap-fit assembly is disposed on the plate portion and faces the base plate for assembly with the connecting assembly. The second fixing structure is disposed on the plate portion or the snap-fit assembly and is detachably connected to the first fixing structure. By disposing the snap-fit assembly on the plate portion of the elastic member and assembling the snap-fit assembly with the connecting assembly, the connecting assembly does not need to be connected to the key cap. Furthermore, the first fixing structure of the key cap and the second fixing structure located on the elastic member or the snap-fit assembly are detachably connected to each other. Therefore, when the key cap needs to be replaced, the key cap can be removed by only releasing the connection between the first fixing structure and the second fixing structure, which is quite convenient. In addition, when the key cap is removed, since the connecting assembly is connected to the clamping assembly, the structure of the clamping assembly will not be damaged.

It should be noted that the above embodiments are given for the purpose of illustration only, and the scope of rights claimed by the present invention should be based on the scope of the patent application, rather than being limited to the above embodiments.

1, 1a, 1b, 1c: key structure 10: bottom plate 20, 20c: key cap 21, 21c: first fixing structure 211c: head 212c: rod 22: conductive column 30, 30a, 30b, 30c: elastic member 31, 31a, 31b, 31c: reset part 311: bottom 312: crown 313: trigger part 32, 32a, 32b, 32c: plate body 321a, 321b: hole 322a, 322b: short axis 323a, 323b: long axis 324b: rib 33: receiving groove 34: conductive protrusion 40, 40c: snap-fit assembly 41, 41c: hinge 42, 42c: slide groove 43, 43c: rib 50: connection assembly 51: first frame 511: moving end 512: fixed end 513: receiving hole 52: second frame 521: fixed end 522: moving end 60, 60c: second fixed structure 70: circuit board

FIG1 is a schematic diagram of the key structure of the first embodiment of the present invention. FIG2 is a schematic diagram of the exploded key structure shown in FIG1. FIG3 is a schematic diagram of the key cap and elastic member, the clamping assembly and the second fixing structure shown in FIG2. FIG4 is a cross-sectional diagram of the key cap and elastic member shown in FIG3 after being combined. FIG5 is a cross-sectional schematic diagram of the key structure shown in FIG1. FIG6 is a schematic diagram of the key structure of the second embodiment of the present invention. FIG7 is a schematic diagram of the elastic member shown in FIG6. FIG8 is a schematic diagram of the key structure of the third embodiment of the present invention. FIG9 is a schematic diagram of the elastic member shown in FIG8. FIG10 is a schematic diagram of the key structure of the fourth embodiment of the present invention. Figure 11 is a cross-sectional view of the key cap and elastic member shown in Figure 10 after being assembled.

1: Button structure

10: Base plate

20: Keycaps

30: Elastic parts

31: Reset Department

32: Plate body

33: Storage tank

34: Conductive convex part

40: snap-fit assembly

41: Joint

42: Chute

43: Ribs

50:Connection components

51: First frame

511: Mobile

512: Fixed end

513: Accommodation hole

52: Second frame

521: Fixed end

522: Mobile terminal

60: Second fixed structure

70: Circuit board

Claims (12)

A key structure includes: a base plate; a key cap including a first fixing structure; and an elastic member including: a reset portion having a bottom and a crown, the bottom being arranged on the base plate; and a plate body connected to the crown of the reset portion; a snap-fit assembly arranged on the plate body and facing the base plate; a second fixing structure arranged on the plate body or the snap-fit assembly, the second fixing structure being detachably connected to the first fixing structure; a connecting assembly including a first frame and a second frame pivotally connected to each other, the opposite ends of the first frame and the second frame being connected to the base plate and the snap-fit assembly respectively. A key structure as described in claim 1, wherein the locking assembly further includes at least one pivoting portion, at least one slide groove and a rib, wherein the rib connects the pivoting portion and the slide groove. A key structure as described in claim 1, wherein the elastic member and the engaging assembly are integrally formed. A key structure as described in claim 1, wherein the elastic part and the engaging assembly are made by embedded injection molding, encapsulated injection molding, or dual-material injection molding. A key structure as described in claim 1, wherein the reset portion is a dome structure. A key structure as described in claim 1, wherein the plate body includes a plurality of holes. As described in claim 1, the elastic member further includes a receiving groove, which is arranged in the plate body and extends to the reset portion, and the key cap further includes a conductive column, which is arranged in the receiving groove. A key structure as described in claim 1, wherein the elastic member further includes at least one conductive protrusion, which is arranged on a surface of the plate body facing the base plate and close to at least one side of the plate body. A key structure as described in claim 1, wherein the hardness of the plate body is greater than the hardness of the reset portion. A key structure as described in claim 1, wherein the first fixing structure and the second fixing structure are connected to each other by magnetic attraction. A key structure as described in claim 10, wherein the first fixing structure and the second fixing structure are respectively a magnet, the first fixing structure is arranged on a bottom surface of the key cap facing the base plate, and the second fixing structure is arranged on the locking assembly. A key structure as described in claim 1, wherein the first fixing structure is a locking column, and the second fixing structure is a through hole provided in the plate body, and the locking column passes through the through hole.

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