TWI792872B - key input device - Google Patents

Abstract

The present invention realizes a key input device capable of holding a key in a pressed position with a simple structure that does not use electricity. The keyboard (1) is equipped with a plurality of key switches (10) on the main body (2). The key switch (10) includes: a casing (11) fixed to the main body (2) of the keyboard (1); (12); an elastic member (13) that pushes back the movable member in a direction opposite to the pressing direction; and a magnetic member (16) that moves integrally with the movable member (12) and has a magnetic body. A magnet member (19) having a permanent magnet (8) is detachably attached to the bottom of the main body (2).

Description

key input device

The present invention relates to a key input device provided with a switch device for switching an electrical contact separation state by pressing a movable member.

As an input device for electronic equipment such as a computer, a keyboard, which is a key input device in which a plurality of key switches (hereinafter, also referred to as keys) are arranged in a row, is widely used. And, recently, keyboards are also used in computer games called e-sports.

However, among such keyboards, some have a function of invalidating input signals. When playing a game, by using this function to disable the input signal of the key not necessary for playing the game, it is possible to prevent the input signal of the key not being output during the game play.

In addition, Patent Document 1 describes a technique in which an electromagnet is used to attract and hold a key in a pressed position where it cannot be pressed down.

[Prior art literature] [Patent Document]

[Patent Document 1] Specification of Chinese Patent No. 103377842

By using the input signal invalidation function, it is possible to prevent the output of the input signal of the key not necessary for playing the game, but to enable the pressing operation of the key. Therefore, when an unnecessary key is operated by mistake, unnecessary key operation time is generated during the game operation. Depending on the game, the delay in game operation due to the unnecessary key operation time may affect the outcome.

On the other hand, according to the technique of Patent Document 1, it is possible to prevent erroneous operation of unnecessary keys, and to prevent unnecessary key operation time during game operations. However, since the key is sucked and held at the pressed position using an electromagnet, devices including a coil, an iron core, and a control unit for controlling the current flowing to the coil are required, resulting in high cost and a large device. In addition, since electricity is used, power consumption also increases.

An object of one aspect of the present invention is to realize a key input device capable of holding a key in a pressed position with a simple structure that does not use electricity.

In order to solve the above-mentioned problems, the present invention employs the following configurations.

That is, a key input device according to an aspect of the present invention is a key input device provided with a plurality of switch devices, wherein the switch devices include: a fixed member fixed to the main body of the key input device; provided to be movable relative to the fixed member, and to move to a pressed position by a pressing operation; an elastic member that pushes back the movable member in a direction opposite to the pressing direction; and a magnetic member that has a magnetic body and Moving integrally with the movable member, a magnet having a permanent magnet and attracting the magnetic member is detachably attached to the bottom of the main body The magnetic part attracts the magnetic part with a greater force than the elastic part pushes back the movable part in the opposite direction.

According to the above configuration, the magnet member having the permanent magnet provided on the bottom of the main body attracts the magnetic member having the magnetic body provided on the movable member of the switch device. Thereby, the movable member, that is, the switch device can be held in the depressed position. Furthermore, since the magnet member is detachable, it can be used as a normal key input device by detaching it in advance without holding the switch device in the depressed position. Accordingly, it is possible to realize a key input device capable of holding a key in a pressed position with a simple structure that does not use electricity.

In the key input device according to the above one aspect, the fixing member may have a hole through which the front end portion of the magnetic member in the pressing direction is inserted, and when the movable member is located at the pressing position, Next, the front end portion of the magnetic member in the pressing direction is closer to the bottom of the main body than the fixing member. Thereby, the magnetic member of the switch device can be brought closer to the bottom of the main body of the key input device provided with the magnet member in the pressed state, and the attraction (attraction) effect by magnetic force can be improved.

In the key input device according to the above one aspect, it may be configured to include a wiring board disposed below the fixing member, and the wiring board has a hole through which the front end portion of the magnetic member in the pushing direction is inserted. In a state in which the movable member is located at the depressed position, a front end portion of the magnetic member in a depressed direction is closer to the bottom of the main body than the wiring board. Thereby, the magnetic member of the switch device can be brought closer to the key input device provided with the magnet member in the pressed state. The bottom of the main body can improve the effect of attraction (adsorption) by magnetic force.

In the key input device according to the above one aspect, the magnet member may include a holder that holds the permanent magnet and is detachably attached to the main body. By using the bracket, the magnet part can be easily attached to the bottom of the main body.

In the key input device according to the above one aspect, the magnet member may be mounted in a hole provided at the bottom of the main body from the back side of the main body, and the holder may be rotatable relative to the hole. A locking shape is provided on the outer peripheral portion of the bracket and the inner peripheral portion of the hole, and the locking shapes are engaged with each other by rotating the bracket in the installation direction, so that the bracket is locked on the Describe the hole. By setting it as such a structure, the holder which can attach and detach to a hole part can be comprised easily.

In the key input device according to the above one aspect, each of the locking shapes formed on the outer peripheral portion of the holder and the inner peripheral portion of the hole may have a locking surface, and the locking surface connects the The radial direction of the bracket is regarded as an in-plane direction, abutting against and locking each other, and each locking surface has a concave portion or a convex portion extending along the radial direction of the bracket and fitting with each other. Thereby, in the state which attached the magnet member to the bottom part of a main body, it can lock easily so that it may not fall off.

In the key input device according to the above one aspect, the magnet member may be mounted in a hole provided at the bottom of the main body from the back side of the main body, and the holder may be rotatable relative to the hole. , a detachable shape is provided on the outer peripheral portion of the bracket and the inner peripheral portion of the hole, and the detachable shape engages with each other by rotating the bracket in the detachment direction, so that the magnet member is moved toward the hole The entry side moves. Thereby, it is possible to overcome the attraction force between the magnetic member and easily Remove the magnet assembly from the bottom of the main body.

In the key input device according to the above one aspect, the main body may have a hole in which the magnet member is loosely fitted on the back surface of the bottom, and the magnet member is loosely fitted into the hole, And it is held by the said hole part by the attraction|suction force with the said magnetic member. Since it is not necessary to provide a locking shape in the hole formed in the bottom of the main body, the bottom of the main body can be manufactured at low cost.

According to one aspect of the present invention, it is possible to realize a key input device capable of holding a key in a pressed position with a simple structure that does not use electricity.

1, 51: keyboard

2: Subject

3, 52: Bottom plate

3a, 20a: back

4: Hood

5: metal plate

5a: opening

6: Wiring substrate

6a, 6b, 11c, 25: holes

8: permanent magnet

10: Key switch (switch device)

11: Shell (fixed part)

11a: knurled portion

11b: Boss

11d: Pedestal

12: Movable parts

12a: Press piece

12a1: cam surface

12b: Slot

13: Elastic parts

14, 14': movable piece

14a, 14a': contacts

14b, 14b': terminals

14c, 14c': the first bending piece

14d, 14d': the second bending piece

14e, 14e': pressed piece

14e1, 14e1': convex surface

15: Guide cover (fixed part)

15a: tongue

15b: protrusion

16:Magnetic parts

17: Button top part

19, 53: magnet parts (magnet parts)

20: Bracket

21: Locking shape on the bracket side

21a: Locking surface (lower surface) on the bracket side

21b: Upper surface

21c: wall-like part

22: Bracket side disassembly shape

26: threaded hole

30, 54: Hole

31: Locking shape on the main body side

31a: Locking surface on main body side (upper surface)

32: Disassembly shape of main body side

33: step department

40: concave part

41: convex part

60: fixture

201, 202, 801, 802, 901, 902, 903, 1101, 1102, 1103, 1104, 1105, 1201, 1202, 1203, 1204, 1205, 1301, 1302, 1401, 1402: symbol

FIG. 1 is a schematic perspective view showing an example of the appearance of a keyboard according to this embodiment.

FIG. 2 is a partial cross-sectional view of the keyboard of the present embodiment.

FIG. 3 is a perspective view showing an example of the appearance of the push switch according to this embodiment.

Fig. 4 is an exploded perspective view of the push switch according to the present embodiment.

Fig. 5 is a perspective view showing the configuration of a pair of movable pieces in the push switch according to the present embodiment.

FIG. 6 is a perspective view showing an example of engagement of a movable member for providing an operational tactile feeling and a pair of movable pieces in the push switch according to the embodiment.

7 is a perspective view showing the rear side of the bottom plate of the main body in the keyboard of the present embodiment.

FIG. 8 is a diagram showing the method of holding the keyboard in the pressed position according to the present embodiment. Mingtu.

FIG. 9 is a diagram showing the structure of a magnet member attached to the bottom plate of the main body of the keyboard according to this embodiment.

10 is a cross-sectional view of a hole provided in the bottom plate of the main body of the keyboard according to the present embodiment.

FIG. 11 is an explanatory view showing a method of attaching a magnet member to the bottom plate of the main body of the keyboard according to the present embodiment.

FIG. 12 is an explanatory view showing a method of detaching the magnet member from the bottom plate of the main body of the keyboard according to the present embodiment.

FIG. 13 is an explanatory view showing a method of holding a key switch in a depressed position of a keyboard according to another embodiment.

FIG. 14 is an explanatory diagram showing a method of releasing hold of a key switch in a keyboard according to another embodiment.

Hereinafter, an embodiment (hereinafter, also referred to as "this embodiment") of one aspect of the present disclosure will be described based on the drawings. In this embodiment, as one form of the key input device of the present disclosure, for example, a keyboard used for inputting characters, numerals, and symbols to electronic equipment such as a computer, inputting data such as various commands, and operating a game is exemplified.

§1 Application example

First, an example of a case where a keyboard 1 as a key input device and a key switch 10 as a switch device are applied will be described using FIGS. 1 , 8 , and 9 . like As shown in FIG. 1 , a keyboard 1 is provided with a plurality of key switches 10 arranged in a row as an input device for electronic equipment such as a computer. The keyboard 1 can be generally used as an input device for electronic equipment such as a computer, and can also be set to a specification suitable for a computer game called electronic sports.

That is, as shown by reference numeral 802 in FIG. 8 , the movable member 12 of the key switch 10 is provided with a magnetic member 16 having a magnetic body. On the other hand, a magnet member (magnet member) 19 having a permanent magnet 8 is detachably attached to the bottom plate 3 of the main body 2 of the keyboard 1 .

By adopting such a structure, in the state where the magnet member 19 is attached to the base plate 3, by pressing the push switch 10, the push switch 10 can be moved by the attractive force generated by the magnetic force of the magnetic member 16 and the magnet member 19. Hold in pressed position. Thus, for key switches 10 that are not used for game operations, or key switches 10 that may be misoperated during game operations, by attaching the magnet member 19 to the bottom plate 3 and holding the key switches 10 at the pressed position, erroneous operations can be prevented. . In addition, since the magnet member 19 is detachably attached to the bottom plate 3, it can also be used normally by detaching the magnet member 19 .

Furthermore, as shown in FIG. 9 , the magnet member 19 attached to the bottom plate 3 can also be configured to have a bracket 20 that can be attached to and detached from the bottom plate 3 . In this case, the magnet member 19 can be easily attached and detached by using a general-purpose jig such as a screwdriver without using a special jig.

§2 Configuration example [Embodiment 1]

(1. Outline of keyboard 1)

First, the schematic structure of the keyboard to which the key input device of this embodiment is applied is demonstrated using FIG.1, FIG.2. FIG. 1 is a schematic perspective view showing an example of the appearance of a keyboard 1 according to the present embodiment. FIG. 2 is a partial cross-sectional view of the keyboard 1 of the present embodiment. The figure shown by the symbol 201 in FIG. 2 is a cross-sectional view of a certain part of the key switch 10 at the line L1 extending in the front-rear direction shown in FIG. 1 , and the figure shown by the symbol 202 in FIG. A sectional view taken along a line L2 extending transversely.

As shown in FIG. 1 , the keyboard 1 includes a main body 2 , and a plurality of key switches 10 serving as switch devices according to the present embodiment are arranged in parallel in the main body 2 . Functions are allocated to each key switch 10, and are classified into character keys, numeric keys, other function keys, and the like according to the functions. In addition, in the keyboard 1 illustrated in FIG. 1 , key switches 10 of the same shape are arranged in parallel for the purpose of simplifying the structure and enabling easy identification of technical content, but the mounting is not limited to such a shape.

As shown in FIG. 2 , the key switch 10 includes a housing 11 , a guide cover 15 , a movable member 12 , an elastic member 13 , and a magnetic member 16 . The housing 11 and the guide cover 15 constitute a fixed member. The movable member 12 is movable relative to the housing 11 and the guide cover 15, and moves to the pressed position by a pressing operation. When the pressure generated by the pressing operation is released, the movable member 12 returns to its original position by the restoring force of the elastic member 13 . The magnetic member 16 moves integrally with the movable member 12 and has a magnetic body attracted by a permanent magnet.

The main body 2 of the keyboard 1 includes: a bottom plate 3 disposed on the bottom; a cover 4 covering the upper surface side where the key switch 10 is provided; and a metal plate 5 disposed on the bottom. between the board 3 and the cover 4 ; and a wiring substrate 6 disposed between the metal plate 5 and the base plate 3 . The metal plate 5 has an opening 5a in which the key switch 10 is attached, and the key switch 10 is attached to the opening 5a. A hole 6 b through which the lower end portion of the magnetic member 16 is inserted is formed in the wiring board 6 . The bottom plate 3 is detachably attached with a magnet member 19 corresponding to the attachment position of the key switch 10 . The magnet part 19 has a permanent magnet 8 .

The magnetic member 16 included in the push switch 10 and the magnet member 19 disposed on the main body 2 side constitute a holding mechanism for holding the movable member 12 of the push switch 10 in the pressed position by magnetic force. In the holding mechanism that uses the attractive force between the magnetic body and the permanent magnet to hold the movable member 12 in the pressed position, as long as the key switch 10 has either a magnetic body or a permanent magnet, the main body 2 of the keyboard 1 has a magnetic body or a permanent magnet. Either side of the magnet will do. Hereinafter, it is assumed that the keyboard 1 is disposed on a horizontal plane, and the moving direction of the movable member 12 will be described as the vertical direction.

(2. Structure of key switch 10)

Next, the schematic structure of the key switch 10 of this embodiment is demonstrated using FIG. 3, FIG. 4, and above-mentioned FIG. 2 suitably. FIG. 3 is a perspective view showing an example of the appearance of the push switch 10 according to this embodiment. FIG. 4 is an exploded perspective view of the push switch 10 of the present embodiment. As shown in FIGS. 3 and 4 , the key switch 10 includes a housing 11 , a movable member 12 , an elastic member 13 , a pair of movable pieces 14 and 14 ′, a guide cover 15 and a magnetic member 16 .

The case 11 is a box-shaped member, and is also a member for fixing the key switch 10 to the main body 2 as described above. The housing 11 has a flange-like portion 11 a locked to the upper surface of the metal plate 5 (see FIG. 2 ) on the upper outer peripheral portion. Housing 11 is on the lower surface It has a boss 11b that fits into a hole 6a (see FIG. 2 ) formed in the wiring board 6 . Furthermore, the housing 11 has a base 11d on which the elastic member 13 is mounted at the central portion of the inner bottom surface. A hole 11c through which the lower end portion of the magnetic member 16 is inserted is formed in the base 11d. In addition, although not shown, the lower surface of the housing 11 is provided with holes for inserting the terminals 14b, 14b' formed on the pair of movable pieces 14, 14', and the like.

The guide cover 15 is fitted to the upper portion of the casing 11 . As shown by reference numeral 202 in FIG. 2 , the guide cover 15 has tongue pieces 15 a extending downward on both lateral sides. A protrusion 15 b protruding outward and locked to the lower surface of the metal plate 5 is formed at the lower end of the tongue piece 15 a.

The movable member 12 is movable relative to the housing 11 and the guide cover 15 , and moves to the pressed position by a pressing operation as described above. In the present embodiment, the movable member 12 is attached to the upper portion of the guide cover 15 so as to be movable in the vertical direction (the pressing direction and the opposite direction) relative to the housing 11 and the guide cover 15 . On the movable member 12, a key top member 17 (refer to FIG. 3 ) that accepts a push operation is detachably attached. In addition, the corner portion of the inner peripheral surface of the movable member 12 has a pressing piece 12a (see FIG. This will be described in detail below. Two pressing pieces 12a (see Fig. 6 ) are formed corresponding to the pressed pieces 14e, 14e'.

The magnetic member 16 is a rod-shaped member having a magnetic body such as iron or made of the magnetic body itself. The upper end of the magnetic member 16 is attached to the lower surface (the surface facing the pressing direction) of the movable member 12 and moves integrally with the movable member 12 . In addition, as a magnetic The member 16 and the rod-shaped member do not need to be a magnetic body as a whole, as long as at least the lower end portion is a magnetic body.

The elastic member 13 is a member that pushes back the movable member 12 in a return direction (upward direction) that is opposite to the pressing direction, and is, for example, a coil spring. The elastic member 13 is arranged at the center of the inside of the housing 11 , and its lower end is attached to the base 11 d of the housing 11 , and its upper end is fitted into a groove 12 b formed on the lower surface of the movable member 12 . The force with which the elastic member 13 pushes back the movable member 12 in the opposite direction is set to be weaker than the force with which the magnet member 19 attracts the magnetic member 16 . That is, the magnet member 19 attracts the magnetic member 16 with a greater force than the elastic member 13 pushes back the movable member 12 in the opposite direction.

The pair of movable pieces 14, 14' are sensor members for detecting the push operation of the key switch 10, and are arranged along the inner peripheral wall of the casing 11. The movable pieces 14, 14' have contacts 14a, 14a', and when the movable member 12 is pushed down, the contacts 14a, 14a' conduct. The movable pieces 14, 14' have terminals 14b, 14b', and are connected to the wiring board 6 of the main body 2 via the terminals 14b, 14b'. Furthermore, the movable pieces 14 and 14' are also members that give an operational feeling to the pressing operation of the movable member 12. As shown in FIG.

(3. Detection of pressing operations and provision of operational tactile sensations)

Here, the structure of the pair of movable pieces 14, 14', the detection of the push operation of the key switch 10, and the structure for imparting operational tactile sensation will be described with reference to Fig. 5 and Fig. 6 . Fig. 5 is a perspective view showing the configuration of a pair of movable pieces 14, 14' in the push switch 10 of the present embodiment. Fig. 6 is a perspective view showing an example of engagement of the movable member 12 for imparting an operational tactile feeling and the pair of movable pieces 14, 14' in the push switch 10 of the present embodiment.

As shown in Fig. 5, the movable pieces 14, 14' are leaf spring members formed by cutting and bending a metal plate, and have an inverted "C" shape in plan view. The movable pieces 14, 14' have first bent pieces 14c, 14c' and second bent pieces 14d, 14d' formed by bending. Contacts 14a, 14a' are provided on the first bending pieces 14c, 14c' and the second bending pieces 14d, 14d', respectively.

In the first bending pieces 14c, 14c', the contacts 14a, 14a' are provided on the outer surface, and in the second bending pieces 14d, 14d', the contacts 14a, 14a' are provided on the inner surface. The movable pieces 14, 14' are disposed such that the contact 14a of the first bent piece 14c of the movable piece 14 faces the contact 14a' of the second bent piece 14d' of the movable piece 14', and the first bent piece 14d' of the movable piece 14' faces. The contact point 14a' of the bent piece 14c' faces the contact point 14a of the second bent piece 14d of the movable piece 14 . That is, two sets of contacts 14a, 14a' are provided in the movable pieces 14, 14'.

The movable pieces 14, 14' have pressed pieces 14e, 14e' at the front ends of the first bending pieces 14c, 14c'. The pressed pieces 14e, 14e' are formed by bending in a cut-out shape. The pressed pieces 14e, 14e' are parts that receive pressing from the pressing piece 12a provided on the movable member 12 as the movable member 12 is pushed down. The pressed pieces 14e, 14e' are curved so as to bulge outward, and have convex curved surfaces 14e1, 14e1' at the center in the vertical direction. The end portions in the vertical direction of the pressed pieces 14e, 14e' are recessed surfaces inclined inwardly.

As shown in Fig. 6, the movable member 12 has a pressing piece 12a at a corner of the inner peripheral surface and at a position corresponding to the pressed pieces 14e, 14e' of the movable pieces 14, 14'. There are two pressing pieces 12a and two sets of contacts 14a, 14a' corresponding to the movable pieces 14, 14'. The pressing piece 12a is extended in the vertical direction, and protrudes toward the inner side. The pressing piece 12a has It is an inclined shape that enters the inside from the top to the bottom, and the surface facing the inside becomes the cam surface 12a1 that contacts the pressed pieces 14e, 14e'.

FIG. 6 shows a free state in which the movable part 12 is not pressed. As shown in FIG. 6 , in the free state, the lower end portion of the cam surface 12a1 of the pressing piece 12a protruding most inwardly abuts on the convex curved surface 14e1 of the pressed piece 14e. Therefore, the first bent piece 14c is elastically deformed and pressed inward, so that the contact 14a provided on the first bent piece 14c is separated from the contact 14a' provided on the opposing second bent piece 14d' without being separated. touch.

When the movable member 12 is pushed down from the free state and moves downward, the cam surface 12a1 abutting on the convex curved surface 14e1 of the pressed piece 14e moves toward the upper end portion with a small protrusion amount. Along with this movement, the first bent piece 14c pressed inside is gradually restored.

In addition, during the movement of the movable member 12 to the pressed position, the cam surface 12a1 slides relative to the pressed piece 14e, thereby giving the user who presses the movable member 12 an operational feeling.

At any position between the free state and the pressed position of the movable part 12, the first bending piece 14c is completely restored, and the contact point 14a (14a') provided on the first bending piece 14c is connected to the second folding piece opposite to the other. The contacts 14a' of the bent piece 14d' make contact. As a result, the terminals 14b, 14b' of the movable pieces 14, 14' are conducted, and it is detected that the key switch 10 is pressed.

(4. Installation of key switch 10)

Next, attachment of the key switch 10 of this embodiment to the main body 2 will be described using the aforementioned FIG. 2 . As shown in FIG. 2 , the key switch 10 is inserted into the opening 5 a formed in the metal plate 5 , and the flange-shaped portion 11 a of the housing 11 is locked to the edge of the metal plate 5 . upper surface. And, as shown in the figure of reference numeral 202 in FIG. 2 , the protrusion 15 b of the guide cover 15 is engaged with the lower surface of the metal plate 5 . The boss 11 b formed on the lower surface of the housing 11 is fitted into the hole 6 a formed in the wiring board 6 . The terminals 14b, 14b' of the movable pieces 14, 14' are connected to terminals on the wiring board 6 using solder or the like.

(5. Bottom plate 3)

Next, base plate 3 to which permanent magnet 8 is detachably attached will be described using FIG. 7 . FIG. 7 is a perspective view showing the rear surface 3 a side of the bottom plate 3 of the main body 2 of the keyboard 1 according to the present embodiment with a partially enlarged view. As shown in FIG. 7 , magnet members 19 are attached to the rear surface 3 a of the bottom plate 3 corresponding to the attachment positions of the key switches 10 . A hole 30 for attaching the magnet member 19 is formed on the back surface 3 a of the bottom plate 3 , and the magnet member 19 is detachably attached to the hole 30 . In the present embodiment, the magnet member 19 includes a bracket 20 detachably attached to the hole portion 30 . The permanent magnet 8 is held by a holder 20 . On the inner peripheral portion of the hole portion 30 , a main body side locking shape 31 and a main body side detachment shape 32 which will be described later are formed.

(6. How to hold the key switch 10 and release the hold)

Next, a method of holding the key switch 10 at the pressed position and a method of releasing the holding will be described using FIG. 8 . FIG. 8 is an explanatory diagram showing a method of holding the key switch 10 in the pressed position in the keyboard 1 of the present embodiment. As shown by reference numeral 801 in FIG. 8 , in order to hold the key switch 10 in the depressed position, a magnet member 19 is attached to the hole 30 on the rear surface 3 a of the bottom plate 3 .

Next, as shown in the diagram of reference numeral 802 in FIG. 8 , the key switch 10 is pressed down to move to the pressed position. Thus, the magnetic components of the key switch 10 16 is attracted (attracted) by the magnet member 19, so that the key switch 10 is held in the depressed position. Since the magnet member 19 attracts (attracts) the magnetic member 16 with a force greater than the restoring force of the elastic member 13, the key switch 10 remains in the pressed position even if the finger that is pressed is released.

In order to release the key switch 10 being held at the depressed position, the magnet member 19 is detached from the hole portion 30 . As a result, the attraction between the magnet member 19 and the magnetic member 16 disappears, and the key switch 10 returns to the free state due to the restoring force of the elastic member 13 .

In addition, when the keyboard 1 is normally used, the magnet member 19 is detached from the hole portion 30 in advance. In the state where the magnet member 19 is detached, the attractive force does not act on the magnetic member 16, so when the pressing operation is released, the push switch 10 returns to the free state due to the restoring force of the elastic member 13, and normal use can be performed.

(7. Bracket 20)

Next, the structure of the holder 20 of the magnet member 19 is demonstrated using FIG. 9. FIG. FIG. 9 is a diagram showing the structure of the magnet member 19 attached to the bottom plate 3 of the main body 2 of the keyboard 1 according to this embodiment. Reference numeral 901 is a perspective view of the upper side, reference numeral 902 is a perspective view of the rear side, and reference numeral 903 is a side view viewed from the direction of arrow A in the drawing of reference numeral 901 .

As shown in FIG. 9 , the magnet member 19 includes a cylindrical permanent magnet 8 and a holder 20 holding the permanent magnet 8 . The bracket 20 is a low cylindrical member. As shown by reference numeral 901 , a hole 25 for holding the permanent magnet 8 is formed on the upper surface of the holder 20 , and the permanent magnet 8 is held in the hole 25 . As shown in the diagram of symbol 902, the The rear surface 20 a of the bracket 20 is provided with a threaded hole 26 used when attaching and detaching the bracket 20 (magnet member 19 ) to the hole portion 30 . By using the screw hole 26 to rotate the bracket 20 clockwise (toward the screw hole 26 ), the bracket 20 is attached to the hole portion 30 , and by rotating the bracket 20 counterclockwise (toward the screw hole 26 ), the The hole portion 30 detaches the bracket 20 .

On the outer peripheral surface of the bracket 20, a bracket-side locking shape 21 and a bracket-side detachment shape 22 are provided. The bracket-side locking shape 21 engages with a main body-side locking shape 31 (see FIG. 10 ) formed on the inner peripheral portion of the hole 30 of the bottom plate 3 (see FIG. 10 ), and is a shape for attaching the bracket 20 to the hole 30 . . The holder-side locking shape 21 protrudes outward in the radial direction of the holder 20 at a substantially central portion in the vertical direction, and is provided to extend in the circumferential direction.

The lower surface 21 a of the holder-side locking shape 21 is received by the upper surface 31 a of the body-side locking shape 31 , so that the holder 20 is locked to the hole 30 . The lower surface 21 a of the holder-side locking shape 21 corresponds to the upper surface of the body-side locking surface 21 that is the body-side locking surface formed on the inner peripheral portion of the hole 30 , taking the radial direction of the holder 20 as the in-plane direction. The surface 31a is the locking surface on the bracket side. When the bracket 20 (magnet member 19 ) is attached, the upper surface 21 b of the bracket-side locking shape 21 comes into contact with a step portion 33 (see FIG. 7 ) formed in the inner peripheral portion of the hole portion 30 . Hereinafter, the lower surface 21a of the holder side locking shape 21 is called the holder side locking surface 21a, and the upper surface 31a of the main body side locking shape 31 is called the main body side locking surface 31a.

The holder-side detachment shape 22 is engaged with the main body-side detachment shape 32 (refer to FIGS. The shape in which the inlet side of the hole portion 30 moves. bracket side The detachment shape 22 is an inclined surface formed on an upper surface of a protrusion protruding outward in the radial direction of the bracket 20 . The inclined surface forming the stand-side detachment shape 22 has an inclination that approaches the back surface 20a of the stand 20 as it goes from the upstream side to the downstream side in the detachment direction. The holder-side detachment shape 22 is guided by the main body-side detachment shape 32 (see FIGS. 7 and 10 ) formed of an inclined surface, and the holder 20 moves toward the entrance side of the hole 30 .

A plurality of the bracket-side locking shapes 21 and bracket-side detachment shapes 22 are provided on the outer peripheral portion of the bracket 20 along the circumferential direction, and in this example, there are two each.

(8. Hole 30)

Next, the structure of the hole portion 30 provided in the back surface 3 a of the bottom plate 3 will be described using the partially enlarged view of FIG. 7 and FIG. 10 . 10 is a cross-sectional view of the hole 30 provided in the bottom plate 3 of the main body 2 of the keyboard 1 according to the present embodiment. As shown in the partially enlarged view of FIG. 7 , the hole portion 30 has a hole shape that matches the outer shape of the bracket 20 . A step portion 33 shallower than the bottom of the hole portion 30 is formed on the inner peripheral portion of the hole portion 30 . The stepped portion 33 spreads outward in the radial direction (in the radial direction of the holder 20 ) from the inner peripheral surface of the hole portion 30 and extends in the circumferential direction. The stepped portion 33 abuts on the upper surface 21 b of the holder-side locking shape 21 inserted into the holder 20 of the hole portion 30 .

On the downstream side (front in the mounting direction) of the stepped portion 33 in the mounting direction, the body-side locking shape 31 is formed. In addition, a body-side detachment shape 32 is formed on the downstream side (front in the detachment direction) of the step portion 33 in the detachment direction.

The main body-side locking shape 31 engages with the bracket-side locking shape 21 (see FIG. 9 ) formed on the outer peripheral portion of the bracket 20 , and is a shape for attaching the bracket 20 to the hole portion 30 . The locking shape 31 on the main body side passes downstream in the mounting direction of the stepped portion 33 On the bottom side, a space is formed by leaving the back surface 3a of the bottom plate 3 and including the inner peripheral surface of the hole 30 to form a space.

In addition, a fine recess 40 extending in the radial direction of the hole 30 (the radial direction of the holder 20 ) is formed on the upper surface of the body-side locking shape 31 , that is, the body-side locking surface 31 a, and the holder-side locking shape On the lower surface of 21, that is, the holder-side locking surface 21a, fine protrusions 41 extending in the radial direction of the holder 20 are formed (see FIG. 9). The bracket 20 is fixed (locked) at the locked position by fitting the concave portion 40 of the body-side locking shape 31 and the convex portion 41 of the bracket-side locking shape 21 . In addition, the convex part 41 may be provided in the main body side locking shape 31, and the recessed part 40 may be provided in the bracket side locking shape 21.

The body-side detachment shape 32 is a shape for moving the holder 20 toward the entrance of the hole 30 to engage with the holder-side detachment shape 22 (see FIG. 9 ) formed on the outer peripheral portion of the holder 20 . The body-side detachment shape 32 is constituted by an inclined surface approaching the back surface 3 a of the bottom plate 3 as going from the upstream side toward the downstream side in the detachment direction downstream of the step portion 33 in the detachment direction.

(9. Attachment and detachment of the magnet unit 19)

Next, the method of attaching and detaching the magnet member 19 will be described using FIGS. 11 and 12 . FIG. 11 is an explanatory view showing a method of attaching the magnet member 19 to the bottom plate 3 of the main body 2 of the keyboard 1 according to this embodiment. FIG. 12 is an explanatory view showing a method of detaching the magnet member 19 from the bottom plate 3 of the main body 2 of the keyboard 1 according to this embodiment. Attachment and detachment of the magnet member 19 is carried out with the keyboard 1 turned over and the bottom plate 3 facing upward. In addition, here, attachment and detachment of the magnet member 19 will be described with the bracket 20 as the subject.

When attaching the bracket 20 , the bracket 20 is inserted into the hole 30 in a uniform shape as shown by reference numeral 1101 in FIG. 11 . The figure of reference numeral 1104 is a cross-sectional view of the arrow A-A line of reference numeral 1101 (however, the front and back are reversed and shown). In this state, the upper surface 21 b of the holder-side locking shape 21 abuts on the stepped portion 33 formed on the inner peripheral portion of the hole portion 30 . Next, a jig such as a flat-blade screwdriver or a coin is engaged in the threaded hole 26, and the bracket 20 is rotated clockwise as an attachment direction.

As a result, as shown in the figure of reference numeral 1102, the bracket side locking shape 21 is inserted under the main body side locking shape 31 (below during operation), and as shown in the figure of symbol 1105, the bracket side locking shape 21 is locked. The bracket 20 is fixed to the locking shape 31 on the main body side and installed in the hole 30 . Reference numeral 1105 is an A-A arrow cross-sectional view of reference numeral 1102 (where the front and back are reversed and shown). In the locked state, the concave portion 40 of the locking shape 31 on the main body side fits with the convex portion 41 of the locking shape 21 on the bracket side, thereby restricting the rotation of the bracket 20 in the detachment direction.

In addition, as shown in the figure of reference numeral 1103, the wall-shaped portion 21c extending from the holder-side locking surface 21a toward the rear surface 20a of the holder 20 abuts against the insertion side of the main body-side locking shape 31, thereby preventing the holder 20 from moving too far in the mounting direction. turn.

When detaching the bracket 20, as shown in the figures 1201 to 1203 in FIG. 12 , clamp the jig into the threaded hole 26 in the same manner as in the installation, and rotate the bracket 20 counterclockwise as the detaching direction. The figures 1204 to 1206 are cross-sectional views taken along line B-B of the figures 1201 to 1203 (where the front and back are reversed).

As a result, the holder-side detachable shape 22 slides along the body-side detachable shape 32, and the holder 20 moves toward the entrance side of the hole portion 30 by utilizing the inclination, and can be removed from the hole portion. 30 Take out the bracket 20. By moving the holder 20 toward the entrance of the hole 30 , the magnetic member 16 is separated from the magnet member 19 , and the attractive force of the permanent magnet 8 is weakened, so that the holder 20 can be taken out from the hole 30 .

(10. Effect)

According to the above configuration, the magnet member 19 provided on the bottom plate 3 of the main body 2 and having the permanent magnet 8 attracts the magnetic member 16 provided on the movable member 12 of the key switch 10 and having a magnetic body. Thereby, the movable member 12, that is, the key switch 10 can be held in the depressed position. Furthermore, since the magnet member 19 is detachable from the bottom plate 3, it can be used as a normal keyboard by detaching it beforehand when it is not necessary to hold the key switch 10 in the depressed position.

Furthermore, when the key switch 10 is disposed on the main body 2 of the keyboard 1 , it is heated during a process of connecting to the wiring board 6 or the like. Therefore, in the structure in which the permanent magnet is provided on the push switch 10 side, there is a possibility that the magnetic force may be lowered due to the influence of heat. On the other hand, as described above, since the heat-resistant magnetic body (magnetic member 16 ) is provided on the push switch 10 side, it is possible to prevent the force holding the push switch 10 at the pressed position from decreasing due to heat.

Furthermore, since the housing 11 is provided with the hole 11c, the magnetic member 16 can be brought closer to the magnet member 19, and the effect of attraction (adsorption) by magnetic force can be improved. In addition, in the above structure, since the wiring board 6 of the main body 2 is also provided with the hole 6b, the magnetic member 16 can be brought closer to the magnet member 19, and the attraction (attraction) effect by magnetic force can be improved.

The bracket 20 has a bracket-side locking shape 21 on the outer periphery, and by using such The bracket 20 can easily attach the bracket 20 (magnet member 19) to the bottom plate 3 of the main body 2. And, on the bracket side locking surface 21a locked to the main body side locking surface 31a, a convex portion 41 that engages with the concave portion 40 of the main body side locking surface 31a is provided, and the above-mentioned components can be used in a simple manner without falling off. The magnet part 19 is locked.

In addition, the bracket 20 is provided with a bracket side detachment shape 22 on the outer peripheral portion, and the bracket side detachment shape 22 is engaged with the inner peripheral portion of the hole portion 30 by rotating the bracket 20 in the detachment direction, so that the bracket 20 is moved toward the hole portion. Entry side moves. Thereby, the magnet member 19 can be easily detached from the hole 30 against the attraction force with the magnetic member 16 .

[Embodiment 2]

Hereinafter, other present embodiments of the present invention will be described. Additionally, for For convenience of description, components having the same functions as those described in the above-mentioned present embodiment are denoted by the same reference numerals, and the description thereof will not be repeated.

FIG. 13 is an explanatory diagram showing a method of holding the key switch 10 in the pressed position in the keyboard 51 of the present embodiment. As shown in FIG. 13 , the keyboard 51 is different from the keyboard 1 according to Embodiment 1 in that a bottom plate 52 is provided instead of the bottom plate 3 , and other structures are the same. Instead of the magnet member 19 provided with the bracket 20 , the base plate 52 is detachably mounted with a magnet member 53 composed of the permanent magnet 8 itself without the bracket 20 . The bottom plate 52 is formed with a hole portion 54 which accommodates the magnet member 53 (permanent magnet 8 ) and into which the magnet member 53 is loosely fitted.

13 , in order to hold the push switch 10 at the pushed position, the push switch 10 is pushed down with the magnet member 53 inserted into the hole 54 , as shown by reference numeral 1301 in FIG. 13 . Thus, as shown in the diagram of symbol 1302 in FIG. 13 , by The magnetic member 16 of the key switch 10 is attracted by the magnet member 53 , the magnet member 53 is held so as not to come off, and the key switch 10 (movable member 12 ) is held in the depressed position.

FIG. 14 is an explanatory diagram showing a method of releasing the hold of the key switch 10 in the keyboard 51 of the present embodiment. As shown in the diagram of reference numeral 1401 in FIG. 14 , to release the holding of the key switch 10 , the key switch 10 is pulled in a direction opposite to the pressing direction using the key switch detaching jig 60 . Thereby, as shown in the diagram of reference numeral 1402 in FIG. 14 , the attraction state between the magnetic member 16 and the magnet member 53 is released, the magnet member 53 falls naturally, and the key switch 10 returns to the free state.

In such a configuration, it is not necessary to provide locking shapes or the like in the hole portion 54 formed in the bottom plate 52 , and thus the bottom plate 52 can be manufactured at low cost. Furthermore, since there is no need to provide a locking shape on the magnet member 53, the number of parts can be reduced.

§3 Variations

As mentioned above, although this embodiment of this invention was described in detail, the above-mentioned description is an illustration of this invention in every point. Of course, various improvements and modifications can be made without departing from the scope of the present invention. For example, the following changes are possible. In addition, below, the same code|symbol is used for the same component as the said embodiment, and description is abbreviate|omitted appropriately about the same point as the said embodiment. The following modified examples can be combined as appropriate.

<3.1>

In the keyboards 1 and 51 , all the key switches are configured as the key switch 10 of the present embodiment. However, it is not limited to this structure, for example, it is also possible to use The push switch used for the operation has a conventional structure, and the structure of the push switch 10 is adopted only for push switches located around the push switch which may be misoperated. In this case, the magnet members 19 , 53 detachably provided on the main body 2 of the keyboards 1 , 51 are provided corresponding to the arrangement positions of the key switches 10 .

<3.2>

The key switch 10 can also be processed in groups with the magnet part 19 having the holder 20 . That is, the key switch 10 may include the magnet member 19 having the bracket 20 or the bracket 20 as a constituent element. By preliminarily providing the bracket 20 which can be attached to and detached from the main body 2, the keyboard 1 capable of holding the key switch 10 in the depressed position with a simple structure without using electricity can be more easily realized.

The present invention is not limited to the above-mentioned embodiments, and various changes can be made within the scope shown in the claims. Embodiments obtained by appropriately combining technical solutions disclosed in different embodiments are also included in the scope of the present invention. within the technical range.

1: keyboard

2: Subject

3: Bottom plate

3a: back

4: Hood

5: metal plate

5a: opening

6: Wiring substrate

6a, 6b, 11c: holes

8: permanent magnet

10: Key switch (switch device)

11: Shell (fixed part)

11a: knurled portion

11b: Boss

11d: Pedestal

12: Movable parts

12b: Slot

13: Elastic parts

14, 14': movable piece

14a, 14a': contacts

14b: terminal

15: Guide cover (fixed part)

15a: tongue

15b: protrusion

16:Magnetic parts

17: Button top part

19:Magnet parts

20: Bracket

201, 202: Symbols

Claims (8)

A key input device equipped with a plurality of switch devices, wherein the switch device includes: a fixed part fixed to the main body of the key input device; a movable part configured to be movable relative to the fixed part, and move to a pressed position by a pressing operation; an elastic member pushing back the movable member in a direction opposite to the pressing direction; and a magnetic member having a magnetic body and moving integrally with the movable member, in the main body the bottom of the bottom, a magnet member having a permanent magnet and attracting the magnetic member is detachably installed, the force of the magnet member attracting the magnetic member is greater than the force of the elastic member pushing back the movable member in the opposite direction . The key input device according to claim 1, wherein the fixed member has a hole through which the front end of the magnetic member in the pressing direction is inserted, and when the movable member is located at the pressed position, the The front end portion of the magnetic member in the pressing direction is closer to the bottom of the main body than the fixing member. The key input device according to claim 1 or 2, which includes a wiring board disposed below the fixing member, The wiring board has a hole through which the front end of the magnetic member in the push direction is inserted, and when the movable member is located at the push position, the front end of the magnetic member in the push direction is wider than the front end of the magnetic member. The wiring substrate is closer to the bottom of the main body. The key input device according to claim 1 or 2, wherein the magnet member includes a bracket that holds the permanent magnet and is detachable from the main body. The key input device according to claim 4, wherein the magnet member is fitted into a hole provided at the bottom of the body from the back side of the body, the bracket is rotatable relative to the hole, and the The outer peripheral portion of the bracket and the inner peripheral portion of the hole are provided with a bracket side locking shape, and the bracket side locking shape is engaged with each other by rotating the bracket in the installation direction, so that the bracket is locked on the the hole. The key input device according to claim 5, wherein each of the bracket-side locking shapes formed on the outer peripheral portion of the bracket and the inner peripheral portion of the hole has a bracket-side locking surface, and the bracket-side locking The fixed surfaces abut against the radial direction of the stent as an in-plane direction to lock each other, and each of the stent-side locking surfaces has recesses or protrusions extending along the radial direction of the stent and engaging with each other. The key input device as described in claim item 4, wherein The magnet member is fitted into a hole provided at the bottom of the body from the back side of the body, the bracket is rotatable with respect to the hole, and the outer peripheral portion of the bracket and the inside of the hole are The peripheral portion is provided with holder-side detachable shapes which are engaged with each other by rotating the holder in the detachment direction, thereby moving the magnet member toward the entrance side of the hole. The key input device according to claim 1 or 2, wherein the main body has a hole portion in which the magnet member is loosely fitted on the back surface of the bottom, the magnet member is loosely fitted into the hole portion, and It is held in the hole by an attractive force with the magnetic member.

Images