CN220543783U - Key device and electronic equipment with same - Google Patents

Abstract

The utility model relates to the technical field of equipment accessories, and particularly discloses a key device which comprises a key support, a key cap, a moving arm and a toggle piece. Wherein, the key cap is slidably arranged on the key support; the moving arm is slidably arranged on the key support, and the sliding direction of the moving arm is different from that of the key cap; the toggle piece is rotatably arranged on the key support, the first end of the toggle piece is matched with the keycap, and the second end of the toggle piece is matched with the moving arm, so that when the keycap slides, the toggle piece is pushed to rotate and the moving arm is driven to slide. By the key device, the key is smoother in movement by the driving mode of sliding the key cap, rotating the poking piece and sliding the moving arm, and the key device is not easy to be blocked or even dead. The utility model also discloses electronic equipment with the key device, and the electronic equipment also has the technical effects.

Description

Key device and electronic equipment with same

Technical Field

The present utility model relates to the field of equipment accessories, and more particularly, to a key device and an electronic device having the same.

Background

The key is applied to various electronic devices, for example, a handheld temperature measuring device is taken as an example, the key can be arranged on the side face of the handheld temperature measuring device, and the inner moving arm of the device is driven to longitudinally move by transversely pressing the key. Because the pressing direction of the key is perpendicular to the moving direction of the moving arm, a matched inclined plane is required to be arranged, and the function mode of the vertical included angle between the pressing direction of the key and the moving direction is converted by utilizing the function decomposition mode of the inclined plane force so as to realize driving.

Referring to fig. 1-3, a key 01 is slidably mounted on a key support 03, and a key spring 02 is disposed therebetween for resetting the key 01. The key support 03 is slidably provided with a moving arm 05, and a support spring 04 is arranged between the moving arm and the key support 03 for resetting the key support 03. Wherein the sliding direction of the moving arm 05 is perpendicular to the sliding direction of the key 01. The key 01 is provided with an inclined pressing action inclined plane 011, and the moving arm 05 is provided with a matched moving arm inclined plane 051. When the key 01 is pressed down, the pressing action inclined plane 011 synchronously acts on the moving arm inclined plane 051, force is decomposed through inclined plane matching, under the action of continuous external force, the pressing action inclined plane 011 drives the moving arm inclined plane 051 to move, and the sliding direction of the key 01 is limited because of the sliding direction of the key 01 and the moving arm 05, when the acting force of the moving direction of the key 01 is transferred to the moving arm 05, the moving direction of the moving arm 05 cannot keep consistent with the moving direction of the key 01 because the sliding direction of the moving arm 05 is limited, and the external acting force of the key 01 is decomposed into a downward acting force through the action of the pressing action inclined plane 011 and is transmitted through the moving arm inclined plane 051, so that the up-down movement of the moving arm 05 is realized.

However, in the force transmission process, the movement of the key and the movement arm is realized in a decomposition manner, and the limitation of the key support to the movement direction of the movement arm is needed, so that the phenomenon that the movement of the key and the movement arm is unsmooth or even blocked is easily caused by manufacturing and assembly tolerances.

In summary, how to effectively solve the problems of easy movement, blocking and the like of the keys is a problem that needs to be solved by the current technicians in the field.

Disclosure of Invention

In view of the above, the present utility model is directed to a key device and an electronic device having the same, which can effectively solve the problems of unsmooth movement and locking of the key due to the structural design of the key device and the electronic device having the same.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

a key device, comprising:

a key support;

the key cap is slidably arranged on the key support;

the moving arm is arranged on the key support in a sliding manner, and the sliding direction of the moving arm is different from that of the key cap;

the toggle piece is rotatably arranged on the key support, the first end of the toggle piece is matched with the key cap, and the second end of the toggle piece is matched with the moving arm, so that when the key cap slides, the toggle piece is pushed to rotate and the moving arm is driven to slide; the first end and the second end of the stirring piece are respectively positioned at two sides of the rotating shaft of the stirring piece.

Optionally, in the above key device, one of the first end of the toggle member and the key cap is provided with an inclined surface, and the other is provided with a curved surface or a curved edge matched with the inclined surface.

Optionally, in the above key device, the curved surface is a cylindrical surface or a spherical surface.

Optionally, in the above key device, the toggle member includes:

the shaft part is provided with a shaft hole on the key support and penetrates through the shaft hole;

the first support arm is arranged on one side of the shaft part, and the first end of the stirring piece is the end part of the first support arm;

the second support arm is arranged on the other side opposite to the shaft part, and the second end of the stirring piece is the end part of the second support arm.

Optionally, in the above key device, the first support arm is disposed in the middle of the shaft, and two ends of the shaft are respectively provided with the second support arm.

Optionally, in the above key device, the key support includes:

a bracket body;

the cover plate is connected to one end of the support body, the cover plate faces one end of the support body, a cover plate rotating hole is formed in one end of the support body, the support body faces one end of the cover plate, a support rotating hole is formed in one end of the support body, and the cover plate rotating hole and the support rotating hole enclose the shaft hole.

Optionally, in the above key device, the moving arm includes:

a stem portion;

the sliding arm is connected to the rod part, the sliding arm is slidably mounted on the key support, and the second end of the poking piece abuts against the sliding arm to push the sliding arm to slide.

Optionally, in the above key device, the key support is provided with a bar-shaped through hole, the sliding arm is arranged through the bar-shaped through hole and can slide along the bar-shaped through hole, and two ends of the sliding arm are respectively extended out of the bar-shaped through hole and are matched with the second end of the stirring piece.

Optionally, the above key device further includes:

the first elastic piece is arranged between the keycap and the key support and is used for driving the keycap to lift and reset; and/or the number of the groups of groups,

the second elastic piece is arranged between the moving arm and the key support and is used for driving the moving arm to reset.

The key device provided by the utility model comprises a key support, a key cap, a moving arm and a poking piece. Wherein, the key cap is slidably arranged on the key support; the moving arm is slidably arranged on the key support, and the sliding direction of the moving arm is different from that of the key cap; the toggle piece is rotatably arranged on the key support, the first end of the toggle piece is matched with the keycap, and the second end of the toggle piece is matched with the moving arm, so that when the keycap slides, the toggle piece is pushed to rotate and the moving arm is driven to slide; the first end and the second end of the poking piece are respectively positioned at two sides of the rotating shaft of the poking piece.

When the key device provided by the utility model is applied, the keycap pushes the toggle piece to rotate around the rotating shaft of the keycap when the keycap slides relative to the key support under the action of external force, and the second end of the keycap drives the moving arm to slide relative to the key support along with the rotating motion of the toggle piece, so that the movement of the key-driven moving arm is realized. In summary, according to the key device provided by the utility model, the original key cap driving movement arm is changed from key cap sliding-movement arm sliding to key cap sliding-toggle piece rotating-movement arm sliding, and through sliding-rotating transmission, the key clamping phenomenon caused by force decomposition and sliding limitation is avoided, so that the movement of the key is smoother, and the key is not easy to be blocked or even dead.

In order to achieve the above purpose, the present utility model also provides an electronic device, which includes any one of the key devices described above. Because the key device has the technical effects, the electronic equipment with the key device should have the corresponding technical effects.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a prior art key structure;

FIG. 2 is a schematic diagram of the explosive structure of FIG. 1;

FIG. 3 is a schematic cross-sectional view of FIG. 1;

FIG. 4 is a schematic diagram of a key device according to an embodiment of the present utility model;

FIG. 5 is a schematic diagram of the explosive structure of FIG. 4;

FIG. 6 is a schematic view of the toggle member of FIG. 4;

FIG. 7 is a schematic view of the key cap of FIG. 4;

fig. 8 is another perspective view of the key cap.

The figures are marked as follows:

key 01, action inclined plane 011, key spring 02, key support 03, support spring 04, moving arm 05 and moving arm inclined plane 051;

the device comprises a key support 1, a key cap 2, a moving arm 3, a toggle piece 4, a first elastic piece 5, a second elastic piece 6 and a carrier 7;

the bracket body 11, the cover plate 12, the bracket rotation hole 111, the cover plate rotation hole 121, the bar-shaped through hole 101, the inclined surface 201, the rod portion 31, the slide arm 32, the curved surface 401, the shaft portion 41, the first arm 42, and the second arm 43.

Detailed Description

The embodiment of the utility model discloses a key device which is used for avoiding unsmooth movement and even blocking of keys.

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The key device provided by the utility model is applicable to, but not limited to, electronic equipment such as handheld temperature measuring equipment with keys arranged on the side surfaces. The key device can convert the movement of the keycap into the movement of the moving arm, and the movement directions of the keycap and the moving arm are different, and can be vertical. The sliding installation mode of the keycap and the sliding installation mode of the moving arm can be particularly referred to in the prior art, the key cap is mainly improved in the mode of driving the moving arm by the keycap, namely, the keycap is moved to drive the poking piece to rotate, and the poking piece is rotated to drive the moving arm to move, so that the keycap is prevented from being blocked. The following embodiments mainly describe the above-described transmission structure.

Referring to fig. 4-8, fig. 4 is a schematic structural diagram of a key device according to an embodiment of the utility model; FIG. 5 is a schematic diagram of the explosive structure of FIG. 4; FIG. 6 is a schematic view of the toggle member of FIG. 4; FIG. 7 is a schematic view of the key cap of FIG. 4; fig. 8 is another perspective view of the key cap.

In one embodiment, the key device provided by the utility model comprises a key support 1, a key cap 2, a motion arm 3 and a toggle piece 4. Wherein the key holder 1 provides support for the key cap 2 and the movement arm 3. The key cap 2 is slidably arranged on the key support 1; the moving arm 3 is slidably disposed on the key support 1, and the sliding direction of the moving arm 3 is different from the sliding direction of the keycap 2, and may be specifically perpendicular. The stirring piece 4 is rotatably arranged on the key support 1, the first end of the stirring piece 4 is matched with the key cap 2, the second end of the stirring piece 4 is matched with the moving arm 3, and the first end and the second end of the stirring piece 4 are respectively positioned on two sides of the rotating shaft of the stirring piece 4. When the keycap 2 slides, the first end of the poking piece 4 is acted, the poking piece 4 is pushed to rotate around the rotating shaft of the poking piece, and the rotation of the poking piece 4 acts on the moving arm 3 through the second end, so that the moving arm 3 is driven to slide relative to the key support 1.

When the key device provided by the utility model is applied, the keycap 2 pushes the toggle piece 4 to rotate around the rotating shaft of the keycap when sliding relative to the key support 1 under the action of external force, and the second end of the keycap drives the moving arm 3 to slide relative to the key support 1 along with the rotating motion of the toggle piece 4, so that the movement of the moving arm 3 is driven by keys. In summary, according to the key device provided by the utility model, the original mode of driving the moving arm 3 by the key cap 2 is changed from the sliding of the key cap 2 to the sliding of the moving arm 3 to the sliding of the key cap 2 to the rotating of the poking piece 4 to the sliding of the moving arm 3, and the transmission of sliding and rotating is realized, so that the key device avoids the key clamping phenomenon caused by force decomposition and the limiting of sliding, and the movement of the key is smoother, and is not easy to cause jamming or even jamming.

In one embodiment, one of the first end of the toggle member 4 and the key cap 2 is provided with an inclined surface 201, and the other is provided with a curved surface 401 or a curved edge which mates with the inclined surface 201. In fig. 4, the inclined surface 201 is disposed at one end of the keycap 2 facing the striking member 4, and the first end of the striking member 4 is correspondingly provided with a curved surface 401 or a curved edge. In other embodiments, a curved surface 401 or a curved edge may be provided on the key cap 2, and a corresponding inclined surface 201 is provided at the first end of the striking element 4. Through the cooperation of inclined plane 201 and curved surface 401 or crooked edge, can be steady smooth with the removal of key cap 2 change into stir the rotation of piece 4, realize that the removal of key cap 2 drives stir piece 4 rotation promptly.

In one embodiment, curved surface 401 is a cylindrical or spherical surface. Under the condition that the curved surface 401 is a cylindrical surface, the cylindrical surface is matched with the inclined surface 201 on the keycap 2, when the keycap 2 pushes the poking piece 4, the keycap 2 and the poking piece 4 are in surface-line contact, so that the contact area is small, the sliding friction force is reduced, the acting force required by operating the keycap 2 is further reduced, the using feeling of a user is improved, and the service life of the key device is not easily influenced by friction and abrasion. Under the condition that the curved surface 401 is a spherical surface, the spherical surface is matched with the inclined surface 201 on the keycap 2, so that when the keycap 2 pushes the poking piece 4, the keycap 2 and the poking piece 4 are in surface-point contact, the contact area is reduced to the greatest extent, the sliding friction force is reduced to the greatest extent, the using hand feeling of a user is better improved, and the service life of the key device is prolonged. In other embodiments, the curved surface 401 is not limited to the cylindrical surface or the spherical surface, and may be another curved surface that can cooperate with the inclined surface 201 to drive the toggle member 4 to rotate.

In one embodiment, the curved edge is a circular arc edge, so that the circular arc edge is matched with the inclined surface 201, and when the key cap 2 pushes the stirring piece 4, the key cap 2 and the stirring piece 4 are in surface-point contact, and the sliding friction force is small. In other embodiments, the curved edge may have other shapes such as an elliptical arc.

In one embodiment, the toggle member 4 includes a shaft portion 41, a first arm 42 and a second arm 43. Wherein, the key support 1 is provided with a shaft hole, and the shaft part 41 is penetrated in the shaft hole; the first support arm 42 is arranged on one side of the shaft part 41, and the first end of the toggle piece 4 is the end part of the first support arm 42; the second arm 43 is disposed on the opposite side of the shaft 41, and the second end of the toggle member 4 is the end of the second arm 43. It will be appreciated that the first arm 42, the second arm 43 and the shaft 41 may be integrally formed or may be attached by conventional fixing means such as bonding. The poking piece 4 can rotate around the shaft part 41, the first support arm 42 and the second support arm 43 are respectively arranged on two sides of the shaft part 41, and can respectively prolong the force arms of the poking piece 4 matched with the keycap 2 and the moving arm 3, so that the keycap 2 is convenient for driving the poking piece 4 to rotate and the poking piece 4 is convenient for driving the moving arm 3 to move. The first arm 42 and the second arm 43 may be rod-shaped in particular, so as to reduce the volume of the toggle member 4. In other embodiments, the toggle member 4 may be a plate, and the middle of the plate is perforated, and is connected to the key support 1 through a pin shaft penetrating the plate, so that the plate can rotate around the pin shaft, and two ends of the plate are used as the first end and the second end respectively.

In one embodiment, the first support arm 42 is disposed in the middle of the shaft 41, and when the key cap 2 drives the stirring member 4 to rotate, the middle of the stirring member 4 is stressed, and the rotation is more stable through the cooperation of the middle of the stirring member 4 and the key cap 2.

In one embodiment, the shaft portion 41 is provided with second arms 43 at both ends thereof, respectively, to act on the moving arm 3 from both ends, driving it to move. The force is applied to the two ends, so that on one hand, the sliding of the moving arm 3 is more stable and reliable, and on the other hand, the rotation of the poking piece 4 is more stable. In other embodiments, the first support arm 42 and the second support arm 43 may be disposed in the middle of the striking member 4, or disposed at two ends of the striking member 4, as desired.

In one embodiment, the key holder 1 includes a holder body 11 and a cover plate 12, which are of a split type structure. The bracket body 11 is a main structure of a bracket, and a bracket rotation hole 111 is provided at one end of the bracket body 11 facing the cover plate 12. The cover plate 12 is connected to one end of the bracket body 11, and one end of the cover plate 12 facing the bracket body 11 is provided with a cover plate rotating hole 121, and the cover plate rotating hole 121 and the bracket rotating hole 111 enclose a shaft hole. The bracket rotation hole 111 and the cover rotation hole 121 are holes each having a semicircular cross section. The shaft hole is formed through the cooperation of the bracket body 11 and the cover plate 12, so that the shaft part 41 of the poking piece 4 can be reliably supported and limited, and meanwhile, the split type structure is convenient for assembling the poking piece 4. The connection mode of the bracket body 11 and the cover plate 12 can be specifically bolt connection, bonding and the like. In other embodiments, the bracket body 11 may be of an integral structure, and may be provided with a shaft hole to cooperate with the shaft portion 41 of the striking member 4. The shaft portion 41 may be provided as a pin separate from the first arm 42 and the second arm 43, for example, to facilitate assembly.

In one embodiment, the movement arm 3 comprises a stem 31 and a sliding arm 32. Wherein the end of the lever 31 may be provided with a latch. The sliding arm 32 is used for being matched with the key support 1, and is slidably installed in the key support 1, and the second end of the poking piece 4 abuts against the sliding arm 32 to push the sliding arm 32 to slide. It will be appreciated that the stem 31 and the slide arm 32 may be integrally formed or may be attached by conventional fastening means such as adhesive. Through the cooperation of pole portion 31 and slide arm 32, both realized slidable mounting, the space occupies for a short time, and can transmit the slip of slide arm 32 to the distal end through pole portion 31, be convenient for with other parts cooperation in the electronic equipment.

In one embodiment, the key support 1 is provided with a bar-shaped through hole 101, the sliding arm 32 is arranged through the bar-shaped through hole 101 in a penetrating manner and can slide along the bar-shaped through hole 101, and two ends of the sliding arm 32 extend out of the bar-shaped through hole 101 and are matched with the second end of the toggle piece 4. By providing the bar-shaped through hole 101 to limit and guide the sliding of the sliding arm 32, and the two ends of the sliding arm 32 extend out of the bar-shaped through hole 101, the second ends of the poking piece 4 can be respectively matched with the two ends of the sliding arm 32 to push the sliding arm to slide. From the both ends effect of arm 32, on the one hand the atress is balanced for the slip of arm 32 is more steady smooth, on the other hand, stir the second end of piece 4 and act on arm 32 from the outside of button support 1, the spatial layout of being convenient for has reduced the structural requirement to button support 1.

In one embodiment, the key device further comprises a first elastic member 5. The first elastic piece 5 is arranged between the keycap 2 and the key support 1 and is used for driving the keycap 2 to lift and reset. When the key cap 2 is pressed down relative to the key support 1 under the action of external force, the first elastic piece 5 deforms, and specifically, the key cap 2 pushes the toggle piece 4 to rotate around the rotating shaft of the toggle piece 4 through the cooperation of the inclined surface 201 and the curved surface 401 or the curved edge, and the second end of the key cap drives the moving arm 3 to slide relative to the key support 1 along with the rotating motion of the toggle piece 4. After the external force acting on the keycap 2 is released, the restoring force of the first elastic piece 5 pushes the keycap 2 to lift and reset, the toggle piece 4 loses the function of the keycap 2 and can correspondingly reset, and the moving arm 3 can also reset accordingly.

In one embodiment, the key device further comprises a second elastic member 6. The second elastic piece 6 is arranged between the moving arm 3 and the key support 1 and is used for driving the moving arm 3 to reset. And under the action of the second elastic piece 6, the poking piece 4 can be attached to the keycap 2 all the time. When the key cap 2 is pressed down relative to the key support 1 under the action of external force, the key cap 2 pushes the stirring piece 4 to rotate around the rotating shaft of the stirring piece 4 through the cooperation of the inclined surface 201 and the curved surface 401 or the curved edge, the second end of the key cap drives the moving arm 3 to slide relative to the key support 1 along with the rotating motion of the stirring piece 4, and meanwhile, the second elastic piece 6 deforms. After the external force acting on the keycap 2 is released, the stirring piece 4 loses the function of the keycap 2, the corresponding moving arm 3 loses the function of the stirring piece 4, and then the moving arm 3 can reset under the action of the restoring force of the second elastic piece 6, so that the stirring piece 4 is driven to reversely rotate and reset, and the keycap 2 is correspondingly lifted and reset.

In one embodiment, the first elastic member 5 and the second elastic member 6 described above may be provided at the same time. After the external force acting on the keycap 2 is released, the first elastic piece 5 drives the keycap 2 to lift and reset, and the second elastic piece 6 correspondingly drives the moving arm 3 to reset. The first elastic member 5 and the second elastic member 6 cooperate with each other, thereby improving the reliability of the key device and the stability of each movement. The first elastic member 5 and the second elastic member 6 may be specifically compression elastic members or tension elastic members, and specifically, the first elastic member and the second elastic member may be arranged at positions of the first elastic member and the second elastic member and in an assembling relationship with the key holder 1, the key cap 2 and the moving arm 3 respectively, so as to provide restoring force in a restoring direction for the corresponding key cap 2 or moving arm 3. In other embodiments, the resetting may also be achieved by manually pulling the resetting or by the mounting position of the key device to utilize gravity.

In one embodiment, the first elastic member 5 is a compression elastic member disposed between one end of the key cap 2 facing the key support 1 and the key support 1; the second elastic piece 6 is a compression elastic piece arranged between one end of the moving arm 3, which is far away from the poking piece 4, and the key support 1. Referring to fig. 4, taking the key cap 2 with the inclined surface 201, the stirring member 4 is provided with the curved surface 401 or the curved edge, and the moving arm 3 includes the rod portion 31 and the sliding arm 32, the second end of the stirring member 4 abuts against the lower end of the sliding arm 32 as an example, when the key cap 2 is continuously pressed by an external force, the acting force of the inclined surface 201 is applied to the curved surface 401 or the curved edge of the stirring member 4, and at this time, the curved surface 401 or the curved edge is driven by the external force to rotate the stirring member 4 anticlockwise, and meanwhile, the rotation of the second end of the stirring member 4 drives the moving arm 3 to move upwards. The inward pressing movement direction of the keycap 2 is realized by means of external force, and after the external force action of the key is canceled, the keycap 2 is reset and lifted under the action of the restoring force of the first elastic piece 5. The movable arm 3 is reset and moves downwards under the action of the restoring force of the second elastic piece 6. In other embodiments, the movement direction of the keycap 2 and the movement of the movement arm 3 are not limited to the above-mentioned corresponding relationship, and may be set according to needs, which is not described herein.

Based on the key device provided in the above embodiment, the present utility model further provides an electronic device, which includes any one of the key devices in the above embodiment. Since the electronic device adopts the key device in the above embodiment, the beneficial effects of the electronic device are as follows.

Specifically, the electronic device may be a temperature measuring device, such as a handheld temperature measuring device. The key device can be arranged on the side wall of the handheld temperature measuring equipment. The housing of the electronic device or the like can be used as a carrier 7 of the key holder 1 for the mounting of the key device.

In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A key device, comprising:

a key holder (1);

the key cap (2) is slidably arranged on the key support (1);

the moving arm (3) is slidably arranged on the key support (1), and the sliding direction of the moving arm (3) is different from that of the key cap (2);

the toggle piece (4) is rotatably arranged on the key support (1), a first end of the toggle piece (4) is matched with the keycap (2), and a second end of the toggle piece is matched with the moving arm (3), so that when the keycap (2) slides, the toggle piece (4) is pushed to rotate and the moving arm (3) is driven to slide; the first end and the second end of the stirring piece (4) are respectively positioned at two sides of the rotating shaft of the stirring piece (4).

2. A key device according to claim 1, wherein one of the first end of the toggle member (4) and the key cap (2) is provided with an inclined surface (201), the other one being provided with a curved surface (401) or a curved edge cooperating with the inclined surface (201).

3. The key device according to claim 2, wherein the curved surface (401) is a cylindrical surface or a spherical surface.

4. The key device according to claim 1, wherein the toggle member (4) comprises:

a shaft part (41), wherein the key support (1) is provided with a shaft hole, and the shaft part (41) is penetrated in the shaft hole;

a first support arm (42) arranged on one side of the shaft part (41), wherein the first end of the toggle piece (4) is the end part of the first support arm (42);

the second support arm (43) is arranged on the other side opposite to the shaft part (41), and the second end of the poking piece (4) is the end part of the second support arm (43).

5. The key device according to claim 4, wherein the first arm (42) is provided at a middle portion of the shaft portion (41), and the second arms (43) are provided at both ends of the shaft portion (41), respectively.

6. The key device according to claim 4, wherein the key holder (1) comprises:

a bracket body (11);

the cover plate (12) is connected to one end of the support body (11), a cover plate rotating hole (121) is formed in one end, facing the support body (11), of the cover plate (12), a support rotating hole (111) is formed in one end, facing the cover plate (12), of the support body (11), and the cover plate rotating hole (121) and the support rotating hole (111) enclose the shaft hole.

7. The key device according to claim 1, wherein the movement arm (3) comprises:

a rod (31);

the sliding arm (32) is connected to the rod part (31), the sliding arm (32) is slidably mounted on the key support (1), and the second end of the poking piece (4) abuts against the sliding arm (32) to push the sliding arm (32) to slide.

8. The key device according to claim 7, wherein the key support (1) is provided with a bar-shaped through hole (101), the sliding arm (32) is arranged through the bar-shaped through hole (101) in a penetrating manner and can slide along the bar-shaped through hole (101), and two ends of the sliding arm (32) respectively extend out of the bar-shaped through hole (101) and are matched with the second end of the toggle piece (4).

9. The key device according to any one of claims 1 to 7, further comprising:

the first elastic piece (5) is arranged between the keycap (2) and the key support (1) and is used for driving the keycap (2) to be lifted and reset; and/or the number of the groups of groups,

the second elastic piece (6) is arranged between the moving arm (3) and the key support (1) and is used for driving the moving arm (3) to reset.

10. An electronic device comprising a key arrangement as claimed in any one of claims 1-9.