CN217485402U

CN217485402U - Key assembly and electronic equipment

Info

Publication number: CN217485402U
Application number: CN202221042480.4U
Authority: CN
Inventors: 朱丁纯
Original assignee: Lenovo Beijing Ltd
Current assignee: Lenovo Beijing Ltd
Priority date: 2022-04-29
Filing date: 2022-04-29
Publication date: 2022-09-23
Anticipated expiration: 2032-04-29

Abstract

The application discloses button subassembly and electronic equipment. The key assembly comprises a key and a limit switch, wherein the key is arranged in a first opening on a first surface of the electronic equipment and can move relative to the electronic equipment; the limit switch is movably abutted against the key and can move relative to the electronic equipment; when the limit switch is in a first state, the key and the electronic equipment have a first relative position relationship and the key has a first function; when the limit switch is in a second state, the key and the electronic device have a second relative position relationship, and the key has a second function different from the first function. The keys and the limit switches are arranged in a matched mode, so that the same key can have different first functions and second functions when located in different position relations relative to the electronic equipment, and the conventional key function and the game key function are achieved under the condition that one key is arranged on the electronic equipment.

Description

Key assembly and electronic equipment

Technical Field

The application relates to the technical field of electronic equipment, in particular to a key assembly and electronic equipment.

Background

The game key assembly and the conventional key assembly (start key/volume key) in the current intelligent terminal are generally designed respectively, and are inconvenient to produce and use.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a key assembly and electronic equipment.

In order to solve the above technical problem, an embodiment of the present application provides the following technical solutions:

a first aspect of the present application provides a key assembly, comprising

The key is arranged on the first opening of the first surface of the electronic equipment and can move relative to the electronic equipment;

the limit switch is movably abutted against the key and can move relative to the electronic equipment;

when the limit switch is in a first state, the key and the electronic equipment have a first relative position relationship and the key has a first function; when the limit switch is in a second state, the key and the electronic device have a second relative position relationship, and the key has a second function different from the first function.

In some modified embodiments of the first aspect of the present application, in the key assembly, the limit switch abuts against the key along a pressing direction of the key, and limits the key to pop out of the first opening, so that the key and the electronic device have a first relative position relationship and the key has a first function; the limit switch is separated from the key, and the key pops out of the first opening, so that the key and the electronic equipment have a second relative position relation and the key has a second function different from the first function.

In some modified embodiments of the first aspect of the present application, in the key assembly, the key has a first position-limiting portion, and the first position-limiting portion extends along a first direction; the first direction is the length or width direction of the first opening;

the limit switch slides along the first direction and is arranged on the electronic equipment, a second limit part is arranged on the limit switch, and the second limit part extends along the direction opposite to the first direction so as to be capable of movably abutting against the first limit part along the pressing direction of the key to limit the key to be ejected out of the first hole along the pressing direction.

In some modified embodiments of the first aspect of the present application, the key assembly further includes a first force application member and a second force application member;

the first force application member is arranged along the pressing direction of the key, and two ends of the first force application member respectively abut against the electronic equipment and the key so as to provide a force for ejecting the key out of the first opening;

the second force application part is arranged along the first direction, and two ends of the second force application part respectively abut against the electronic equipment and the limit switch so as to provide a force for resetting the limit switch after the limit switch is separated from the key.

In some modified embodiments of the first aspect of the present application, the key assembly further includes a first triggering component and a second triggering component, where the first triggering component and the second triggering component are both electrically connected to a motherboard of the electronic device;

the first trigger piece is arranged in the electronic equipment and movably abutted against the key so as to trigger the first function through the abutment of the key;

the second trigger piece is arranged in the electronic equipment and is rotationally connected with the key so as to realize the rotation triggering of the second function through the pressing of the key.

In some modified embodiments of the first aspect of the present application, in the key assembly, a protruding portion is disposed on a side of the key facing the electronic device, and the protruding portion movably interferes with the first triggering member;

the second trigger piece is a potentiometer and is connected to one end, far away from the limit switch, of the key.

In some modified embodiments of the first aspect of the present application, in the key assembly, the first force application member and the second force application member are springs; alternatively, the first and second liquid crystal display panels may be,

the first force application member and the second force application member both comprise magnets of the same polarity; the two same-polarity magnets are respectively arranged on the electronic equipment and the keys; or alternatively

The two same-polarity magnets are respectively arranged on the electronic equipment and the limit switch.

In some modified embodiments of the first aspect of the present application, the key assembly is further provided, wherein the limit switch is disposed in the first opening;

a plurality of anti-skid protrusions are arranged on the surface of one side of the limit switch, which is far away from the electronic equipment;

the limit switch with be equipped with the direction muscle on the lateral wall that electronic equipment laminated mutually, the direction muscle is followed the first direction sets up.

In some modified embodiments of the first aspect of the present application, the key assembly further includes a limiting elastic sheet;

the limiting elastic sheet is arranged along the pressing direction of the key, the first end of the limiting elastic sheet is arranged between the first force application piece and the electronic equipment in the direction far away from the key, and the second end of the limiting elastic sheet is abutted against the electronic equipment in the direction close to the key;

the position of the limiting elastic sheet close to the second end of the limiting elastic sheet is provided with a bending part;

the key is provided with a third limiting part at one end facing the electronic equipment, and the third limiting part is matched with the bending part, so that when the at least one key component and the electronic equipment are in a first relative position relation, the bending part limits the key to be ejected out of the first opening.

A second aspect of the embodiments of the present application provides an electronic device, which includes at least one key assembly as described above.

Compared with the prior art, the key assembly provided by the first aspect of the application has the advantages that the keys and the limit switches are arranged in a matched manner, so that the same key can have different first functions and second functions when being in different position relations relative to the electronic equipment, the conventional key function and the game key function are realized under the condition that one key is arranged on the electronic equipment, and the problem of excessive holes caused by the fact that the conventional key and the game key can be arranged independently is avoided; the problem that different function keys on the existing electronic equipment are respectively arranged to cause too many holes on the shell to influence the appearance is effectively solved.

Drawings

The above and other objects, features and advantages of exemplary embodiments of the present application will become readily apparent from the following detailed description read in conjunction with the accompanying drawings. Several embodiments of the present application are illustrated by way of example and not by way of limitation in the figures of the accompanying drawings and in which like reference numerals refer to similar or corresponding parts and in which:

fig. 1 schematically illustrates a structural diagram of a key assembly provided in an embodiment of the present application;

fig. 2 schematically illustrates a state diagram of a key assembly having a first function according to an embodiment of the present application;

FIG. 3 schematically illustrates the cross-sectional view of FIG. 2;

fig. 4 schematically illustrates a state diagram of a key assembly having a second function according to an embodiment of the present application;

FIG. 5 schematically illustrates the cross-sectional view of FIG. 4;

fig. 6 is a schematic diagram illustrating a state where a key assembly triggers a second function according to an embodiment of the present application;

FIG. 7 schematically illustrates the cross-sectional view of FIG. 6;

fig. 8 schematically illustrates a structural diagram of a key in a key assembly according to an embodiment of the present application;

fig. 9 schematically illustrates a structural diagram of a limit switch in a key assembly according to an embodiment of the present application;

fig. 10 schematically illustrates a structural diagram of a second triggering member in a key assembly according to an embodiment of the present application;

fig. 11 schematically illustrates a structural diagram of an electronic device provided in an embodiment of the present application;

the reference numbers illustrate: the button assembly comprises a button assembly 1, a button 2, a first limiting part 21, a protruding part 22, a limiting disc 23, a third limiting part 24, a limiting switch 3, a second limiting part 31, an anti-skid protrusion 32, a guide rib 33, an electronic device 4, a first opening 41, a first force application part 5, a second force application part 6, a first trigger part 7, a second trigger part 8, a limiting elastic sheet 9, a bending part 91 and a first direction a.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

It is to be noted that, unless otherwise specified, technical terms or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which this application belongs.

In order to solve the technical problems, the general idea of the embodiment of the application is as follows:

example 1

Referring to fig. 1, fig. 2 and fig. 4, a key assembly 1 provided in the embodiment of the present application includes a key 2 and a limit switch 3;

the key 2 is arranged in a first opening 41 of a first surface of the electronic device 4 and can move relative to the electronic device 4; the limit switch 3 is movably abutted against the key 2 and can move relative to the electronic equipment 4;

when the limit switch 3 is in a first state, the key 2 and the electronic device 4 have a first relative position relationship, and the key 2 has a first function; when the limit switch 3 is in the second state, the key 2 and the electronic device 4 have a second relative position relationship, and the key 2 has a second function different from the first function.

It is specific, in order to solve different function keys and set up respectively and make the casing trompil too much on the current electronic equipment, influence pleasing to the eye problem, button subassembly 1 that this embodiment provided is through setting up that 2 and limit switch 3 simultaneously in electronic equipment 4's first trompil 41, it is spacing to utilize limit switch 3 to carry on button 2, make button 2 have different functions respectively when having different relative position relations for electronic equipment 4, and then realize that same button 2 has two kinds of functions that can not simultaneously, so that it only need set up a first trompil 41 to correspond two kinds of function keys on electronic equipment 4, reduce the percent opening of casing greatly, effectively guarantee the integrity of casing and electronic equipment 4's appearance aesthetic measure.

The electronic device 4 may be a terminal device such as a mobile phone, a tablet computer, a notebook computer, etc., and the embodiment mainly uses the mobile phone as a key introduction object; the first side of the electronic device 4 may be any side of the electronic device 4, for example: back, side end, etc.; for a device having a display screen, such as a mobile phone, the first surface may be any surface other than the display surface.

In this embodiment, the key 2 is disposed in the first opening 41 on the first surface of the electronic device 4, and the key 2 can perform triggering of corresponding functions with respect to the electronic device 4, for example: press triggers, slide triggers, etc.

The limit switch 3 is of a rigid structure, the limit switch 3 and the key 2 are simultaneously arranged in the first opening 41 to limit the key 2, referring to fig. 2 and fig. 4, when the limit switch 3 is in a first state, the limit switch 2 may be limited or not limited, the key 2 and the electronic device 4 have a first relative position relationship, and at this time, the key 2 has a first function, for example, a function corresponding to the performance of the electronic device 4 such as a screen lock, a power switch, and the like; when the limit switch 3 is in the second state, the key 2 is not limited or limited contrary to the first state, the key 2 and the electronic device 4 have a second relative position relationship, and at this time, the key 2 has a second function different from the first function, for example: shooting, boxing and other game control functions.

According to the above list, in the key assembly 1 provided in the first aspect of the present application, the key 2 and the limit switch 3 are cooperatively arranged, so that the same key 2 can have different first functions and second functions when being in different position relationships with respect to the electronic device 4, so as to have both the conventional key function and the game key function when the key 2 is arranged on the electronic device 4, and avoid the problem of excessive openings caused by separately arranging the conventional key and the game key; the problem that different function keys on the existing electronic equipment are respectively arranged to cause too many holes on the shell to influence the appearance is effectively solved.

The term "and/or" herein is merely an associative relationship describing an associated object, meaning that three relationships may exist, e.g., a and/or B, specifically understood as: both a and B may be included, a may be present alone, or B may be present alone, and any of the three cases can be provided.

Further, referring to fig. 2 and fig. 4, in the key assembly 1 provided in this embodiment, in a specific implementation, the limit switch 3 abuts against the key 2 along the pressing direction of the key 2, and limits the key 2 to pop out of the first opening 41, so that the key 2 and the electronic device 4 have a first relative position relationship and the key 2 has a first function; the limit switch 3 is separated from the key 2, and the key 2 is ejected out of the first opening 41, so that the key 2 and the electronic device 4 have a second relative position relationship and the key 2 has a second function different from the first function.

Specifically, in order to realize that the key 2 can have different functions in a state of being matched with the limit switch 3, in this embodiment, the limit switch 3 is configured to be abutted against the key 2 along the pressing direction of the key 2, for example: the direction perpendicular to the first opening 41 is at least partially located above the key 2, and referring to fig. 2, when the limit switch 3 is in the first state and at least partially abuts against the key 2, the limit key 2 is ejected out of the first opening 41; accordingly, referring to fig. 4, when the limit switch 3 is in the second state, which does not form an interference limit for the button 2, the button 2 can be ejected from the first opening 41.

Further, referring to fig. 3 and fig. 5, in the key assembly 1 provided in this embodiment, in a specific implementation, the key 2 has a first position-limiting portion 21, and the first position-limiting portion 21 extends along a first direction a; the first direction a is a length or width direction of the first opening 41;

the limit switch 3 is slidably disposed on the electronic device 4 along the first direction a, the limit switch 3 is provided with a second limit portion 31, the second limit portion 31 extends along a direction opposite to the first direction a, so as to movably abut against the first limit portion 21 along the pressing direction of the key 2, so as to limit the key 2 to pop out of the first opening 41 along the pressing direction.

Specifically, in order to realize flexible limiting of the key 2 by the limit switch 3, in this embodiment, a first limiting portion 21 is disposed on the key 2, a corresponding second limiting portion 31 is disposed on the limit switch 3, the key 2 and the limit switch 3 are sequentially disposed along a first direction a, the first limiting portion 21 extends along the first direction a on one side of the key 2 facing the limit switch 3, the second limiting portion 31 extends along a direction opposite to the first direction a on one side of the limit switch 3 facing the key 2, and the second limiting portion 31 and the first limiting portion 21 are sequentially disposed along a pressing direction (a direction perpendicular to the first opening 41 and extending into the opening) of the key 2, so that the second limiting portion 31 can press against the first limiting portion 21.

Further, referring to fig. 3 and fig. 5, in the key assembly 1 provided in this embodiment, in a specific implementation, the key assembly 1 further includes a first force application member 5 and a second force application member 6;

the first force application member 5 is arranged along the pressing direction of the key 2, and two ends of the first force application member 5 respectively abut against the electronic device 4 and the key 2 so as to provide a force for ejecting the key 2 out of the first opening 41;

the second force application member 6 is arranged along the first direction a, and two ends of the second force application member 6 respectively abut against the electronic device 4 and the limit switch 3 so as to provide a force for resetting the limit switch 3 after the limit switch 3 is separated from the key 2.

Specifically, in order to change the relative positional relationship of the key 2 with respect to the electronic device 4, in this embodiment, the first force application member 5 and the second force application member 6 are disposed in the key assembly 1; the first force application member 5 and the second force application member 6 are structures capable of providing urging force, for example: a spring or a like magnet. The first force applying member 5 is arranged inside the first opening 41 corresponding to the key 2, the key 2 and the first force applying member 5 are sequentially arranged along a direction perpendicular to the first opening 41, the initial state of the first force applying member 5 is a force storing state, and when the second limiting portion 31 does not limit the first limiting portion 21, the first force applying member 5 ejects the key 2 out of the first opening 41; correspondingly, the second force application member 6 is disposed inside the first opening 41 corresponding to the limit switch 3, the limit switch 3 and the second force application member 6 are sequentially disposed along the first direction a, the initial state of the second force application member 6 is a state of no force storage, when the second limiting portion 31 moves along the first direction a to disengage from the key 2, the second force application member 6 is in the state of force storage, and further after the key 2 is ejected out of the first opening 41, the second force application member 6 pushes the limit switch 3 in a direction opposite to the first direction a to reset the limit switch 3, and further, the key 2 cannot be reset into the first opening 41, that is, the second relative positional relationship is maintained.

Further, referring to fig. 3 and 5, in the key assembly 1 provided in this embodiment, in a specific implementation, the first force applying member 5 and the second force applying member 6 are springs; alternatively, the first force application member 5 and the second force application member 6 each include two magnets (not shown in the drawings); the two magnets are respectively arranged on the electronic equipment 4 and the key 2; or the two same-polarity magnets are respectively arranged on the electronic equipment 4 and the limit switch 3.

Specifically, in order to realize the corresponding functions of the first force application member 5 and the second force application member 6, in this embodiment, both the first force application member 5 and the second force application member 6 may be provided as springs, the initial state of the first force application member 5 is a pre-compression state, and the initial state of the second force application member 6 is a natural length state; in this embodiment, the first force application member 5 and the second force application member 6 may be configured to include two like magnets (not shown), and the generation of the thrust force is realized by using the principle that like magnets repel each other.

Further, referring to fig. 6 and 7, in a specific implementation of the key assembly 1 provided in this embodiment, the key assembly 1 further includes a first triggering member 7 and a second triggering member 8, where the first triggering member 7 and the second triggering member 8 are both electrically connected to a main board (not shown in the figure) of the electronic device 4;

the first trigger 7 is arranged in the electronic device 4, and the first trigger 7 is movably abutted against the key 2 so as to trigger the first function through the abutment of the key 2;

the second trigger piece 8 is arranged in the electronic device 4, and the second trigger piece 8 is rotatably connected with the key 2 so as to realize the rotation triggering of the second function through the pressing of the key 2.

Specifically, in order to implement triggering of different functions of the key 2, in this embodiment, the first triggering component 7 and the second triggering component 8 are arranged to feed back the functional state of the key 2 to the electronic device 4; when the key 2 is located in the first opening 41, pressing the key 2 can make the key 2 movably collide with the first trigger 7 to trigger a first function; correspondingly, after the key 2 is ejected out of the first opening 41, the key 2 can rotate the second trigger member 8 to trigger the second function when the key 2 is pressed.

Further, referring to fig. 8 and fig. 10, in the key assembly 1 provided in this embodiment, in a specific implementation, a protruding portion 22 is disposed on a side of the key 2 facing the electronic device 4, and the protruding portion 22 movably interferes with the first triggering member 7;

the second trigger piece 8 is a potentiometer, and the second trigger piece 8 is connected to one end of the key 2 far away from the limit switch 3.

Specifically, in order to cooperate with the first trigger 7 and the second trigger 8 to realize the switching between the first function and the second function, in this embodiment, a protrusion 22 is disposed on a side of the key 2 facing the electronic device 4, that is, facing the inside of the first opening 41, where the protrusion 22 is a rigid structure, and the shape of the protrusion is not limited herein, and may be any shape as long as the protrusion can interfere with the first trigger 7, and preferably, the protrusion 22 is disposed in the middle of the key 2 along the first direction a to avoid the first limiting portion 21 and the second trigger 8; in this embodiment, the second triggering member 8 is configured as a potentiometer, referring to fig. 8, the key 2 is provided with a limiting disc 23 matched with the potentiometer, and the potentiometer is disposed at one end of the key 2 away from the limit switch 3, so that when the key 2 is ejected out of the first opening 41, the limiting disc 23 does not come out of the first opening 41 but rotates relative to the potentiometer, and then when the key 2 is pressed, the potentiometer rotates again to trigger a second function, such as shooting by pressing or punching a fist in a game process. For example: referring to fig. 4 and fig. 6, fig. 4 shows a state that the key 2 is ejected out of the first opening 41, fig. 6 shows a state that the key 2 triggers the second function, the angle of the shoulder key at the end of the key 2 facing the limit switch 3 changes from 20 degrees to 10 degrees due to the pressing, and the key stroke is 2mm, which can be understood as follows: when the key 2 has the second function, the pressing angle change and the key stroke change can be designed and adjusted according to actual needs, and are not described in detail herein.

Further, referring to fig. 9, in the key assembly 1 provided in this embodiment, in a specific implementation, the limit switch 3 is disposed in the first opening 41;

a plurality of anti-skid protrusions 32 are arranged on the surface of one side of the limit switch 3, which is far away from the electronic equipment 4;

limit switch 3 with be equipped with direction muscle 33 on the lateral wall that electronic equipment 4 laminated mutually, direction muscle 33 is followed first direction a sets up.

Specifically, in order to improve the smoothness of the limit switch 3 sliding relative to the electronic device 4, in this embodiment, the anti-skid protrusions 32 and the guide ribs 33 are arranged on the limit switch 3, so that the friction force between the limit switch 3 and the hand of the user is increased, and the friction force between the limit switch 3 and the electronic device 4 is reduced, so that the user can slide at a larger distance through a smaller force application.

Further, referring to fig. 2 to 7, in the key assembly 1 provided in this embodiment, in a specific implementation, the key assembly 1 further includes a limiting elastic sheet 9;

the limiting elastic sheet 9 is arranged along the pressing direction of the key 2, the first end of the limiting elastic sheet 9 is arranged between the first force application member 7 and the electronic equipment 4 in the direction far away from the key 2, and the second end of the limiting elastic sheet 9 abuts against the electronic equipment 4 in the direction close to the key 2;

a bending part 91 is arranged at the position, close to the second end, of the limiting elastic sheet 9;

a third position-limiting portion 24 is disposed at an end of the key 2 facing the electronic device 4, and the third position-limiting portion 24 is adapted to the bending portion 91, so that when the at least one key assembly 1 and the electronic device 4 are in a first relative position relationship, the bending portion 91 limits the key 2 to be ejected out of the first opening 41.

Specifically, in order to realize smooth and easy pushing down when button 2 is changed into first function by the second function, set up in this embodiment spacing shell fragment 9, spacing shell fragment 9 is followed button 2's the direction setting of pressing down, through the cooperation setting of kink 91 and third spacing portion 24, it is hard to avoid first application of force spare 5 to pop out the great pushing down of distance with button 2, and then realizes that the helping hand pushes down to can also make the user have clear and definite perception of feeling when pushing down the button.

Example 2

Referring to fig. 11, the electronic device 4 provided in this embodiment includes at least one key assembly 1.

Specifically, the key assembly 1 is the key assembly 1 described in embodiment 1, and the detailed description of the specific structure and the working principle of the key assembly 1 is referred to in embodiment 1, which is not repeated herein.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A key assembly, comprising:

when the limit switch is in a first state, the key and the electronic equipment have a first relative position relationship, and the key has a first function; when the limit switch is in a second state, the key and the electronic device have a second relative position relationship, and the key has a second function different from the first function.

2. The key assembly of claim 1, wherein:

the limit switch is abutted against the key along the pressing direction of the key to limit the key to pop out of the first opening, so that the key and the electronic equipment have a first relative position relationship and the key has a first function; the limit switch is separated from the key, and the key is popped out of the first opening, so that the key and the electronic equipment have a second relative position relationship and the key has a second function different from the first function.

3. The key assembly of claim 2, wherein:

the key is provided with a first limiting part, and the first limiting part extends along a first direction; the first direction is the length or width direction of the first opening;

4. The key assembly of claim 3, wherein:

the key assembly also comprises a first force application member and a second force application member;

the first force application part is arranged along the pressing direction of the key, and two ends of the first force application part respectively abut against the electronic equipment and the key so as to provide force for ejecting the key out of the first opening;

the second force application part is arranged along the first direction, and two ends of the second force application part respectively abut against the electronic equipment and the limit switch so as to provide force for resetting after the limit switch is separated from the key.

5. The key assembly of claim 2, wherein:

the key assembly further comprises a first trigger piece and a second trigger piece, and the first trigger piece and the second trigger piece are electrically connected with a main board of the electronic equipment;

the second trigger piece is arranged in the electronic equipment and is in rotating connection with the key so as to realize rotating triggering of the second function through pressing of the key.

6. The key assembly of claim 5, wherein:

a protruding part is arranged on one side of the key, which faces the electronic equipment, and the protruding part is movably abutted against the first trigger piece;

7. The key assembly of claim 4, wherein:

the first force application member and the second force application member are springs; alternatively, the first and second electrodes may be,

the first force application member and the second force application member both comprise magnets of the same polarity; the two same-polarity magnets are respectively arranged on the electronic equipment and the key or

8. The key assembly of claim 4, wherein:

the limit switch is arranged in the first opening;

9. The key assembly of claim 4, wherein:

the key assembly further comprises a limiting elastic sheet;

the limiting elastic sheet is arranged along the pressing direction of the key, the first end of the limiting elastic sheet is arranged between the first force application part and the electronic equipment in the direction away from the key, and the second end of the limiting elastic sheet is abutted against the electronic equipment in the direction close to the key;

the key is provided with a third limiting portion at one end facing the electronic device, and the third limiting portion is matched with the bending portion, so that when the at least one key assembly and the electronic device are in a first relative position relationship, the bending portion limits the key to be ejected out of the first opening.

10. An electronic device, comprising:

a key assembly as recited in any one of claims 1-9.