CN115020143A - Key input device - Google Patents

Abstract

The invention realizes a key input device which can keep a key at a pressed position by a simple structure without using electricity. A plurality of key switches (10) are arranged on a main body (2) of a keyboard (1). A push switch (10) is provided with: a housing (11) fixed to the main body (2) of the keyboard (1); a movable member (12) which is movable relative to the housing (11) and is moved to a pressed position by a pressing operation; an elastic member (13) for pushing back the movable member in the 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 is detachably attached to the bottom of the main body (2).

Description

Key input device

Technical Field

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

Background

As an input device for an electronic apparatus 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. Also, recently, keyboards are also used in computer games called electronic competitions.

However, among such keyboards, there is a keyboard having an input signal invalidation function. By using this function to invalidate the input signals of the unnecessary keys during the game, it is possible to prevent the input signals of the unnecessary keys from being output during the game.

Patent document 1 describes a technique for holding a key by suction with an electromagnet at a pressed position where the key cannot be pressed.

Patent document 1: chinese patent specification No. 103377842

By using the input signal nullification function, it is possible to prevent an input signal of a key which is not necessary for playing a game from being output, but to perform a key depression operation. Therefore, when an unnecessary key is erroneously operated, an unnecessary key operation time is generated in the game operation. Depending on the game, the win or loss may be affected by a delay in the game operation due to the occurrence of the unnecessary key operation time.

On the other hand, according to the technique of patent document 1, it is possible to prevent an erroneous operation of unnecessary keys and to prevent an unnecessary key operation time from occurring in a game operation. However, since the key is held in the pressed position by suction using the electromagnet, a device including a coil, a core, and the like, and a control unit for controlling a current flowing through the coil are required, which increases the cost and increases the size of the device. Further, since electricity is used, power consumption also increases.

Disclosure of Invention

An object of one embodiment of the present invention is to provide a key input device capable of holding a key at a pressed position with a simple configuration without using electricity.

In order to solve the above problem, the present invention adopts the following configuration.

That is, a key input device according to an aspect of the present invention is a key input device in which a plurality of switch devices are arranged, the switch devices including: a fixing member fixed to a main body of the key input device; a movable member that is provided so as to be movable relative to the fixed member and moves to a pressed position by a pressing operation; an elastic member that pushes back the movable member in a direction opposite to a pressing direction; and a magnetic member having a magnetic body and moving integrally with the movable member, wherein a magnet member having a permanent magnet and attracting the magnetic member is detachably attached to a bottom portion of the main body, and a force with which the magnet member attracts the magnetic member is larger than a force with which the elastic member pushes back the movable member in the opposite direction.

According to the above configuration, the magnet member having the permanent magnet provided at the bottom of the main body attracts the magnetic member having the magnetic body provided at the movable member of the switch device. This allows the movable member, i.e., the switch device, to be held at the pressed position. Further, since the magnet member is detachably provided, the magnet member can be used as a normal key input device by being detached in advance without holding the switch device at the pressed position. Thus, a key input device capable of holding a key at a pressed position with a simple structure without using electricity can be realized.

In the key input device according to the above aspect, the fixed member may have a hole through which a tip end portion of the magnetic member in the depressing direction is inserted, and the tip end portion of the magnetic member in the depressing direction may be located closer to the bottom portion of the main body than the fixed member in a state where the movable member is located at the depressing position. Thus, 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) action by the magnetic force can be made more favorable.

In the key input device according to the above aspect, the wiring board may have a hole through which a tip end portion of the magnetic member in the depression direction is inserted, and the tip end portion of the magnetic member in the depression direction may be located closer to the bottom portion of the main body than the wiring board in a state where the movable member is located at the depression position. Thus, 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) action by the magnetic force can be made more favorable.

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

In the key input device according to the above aspect, the magnet member may be attached to a hole provided in a bottom portion of the main body from a back surface side of the main body, the holder may be rotatable with respect to the hole, and locking shapes that engage with each other by rotating the holder in an attachment direction and lock the holder to the hole may be provided in an outer peripheral portion of the holder and an inner peripheral portion of the hole. With such a configuration, the holder can be easily attached to and detached from the hole.

In the key input device according to the above aspect, each of the locking shapes formed in the outer peripheral portion of the holder and the inner peripheral portion of the hole may include locking surfaces that abut against each other to be locked with the radial direction of the holder as an in-plane direction, and each of the locking surfaces may include a concave portion or a convex portion that extends in the radial direction of the holder and that fits into each other. Thus, the magnet member can be easily locked without falling off in a state where the magnet member is attached to the bottom of the body.

In the key input device according to the above aspect, the magnet member may be attached to a hole provided in a bottom portion of the main body from a back surface side of the main body, the holder may be rotatable with respect to the hole, and a detachable shape that moves the magnet member toward an entrance side of the hole by rotating the holder in a detaching direction and engaging with each other may be provided in an outer peripheral portion of the holder and an inner peripheral portion of the hole. This makes it possible to easily detach the magnet member from the bottom of the main body against the attraction force with the magnetic member.

In the key input device according to the above aspect, the main body may have a hole portion in which the magnet member is loosely fitted in a back surface of the bottom portion, and the magnet member may be loosely fitted in the hole portion and held in the hole portion by an attractive force with the 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, a key input device capable of holding a key in a depressed position with a simple configuration without using electricity can be realized.

Drawings

Fig. 1 is a schematic perspective view showing an example of an external appearance of a keyboard according to the present embodiment.

Fig. 2 is a partial sectional view of the keyboard of the present embodiment.

Fig. 3 is a perspective view showing an example of an external appearance of the push switch of the present embodiment.

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

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

Fig. 6 is a perspective view showing an example of engagement between a movable member for providing an operation touch feeling and a pair of movable pieces in the push switch of the present embodiment.

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

Fig. 8 is an explanatory diagram illustrating a method of holding the keyboard at the pressed position according to the present embodiment.

Fig. 9 is a diagram showing a structure of a magnet member attached to a bottom plate of a main body of a keyboard of the present embodiment.

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

Fig. 11 is an explanatory diagram illustrating a method of attaching a magnet member to a bottom plate of a main body of a keyboard according to the present embodiment.

Fig. 12 is an explanatory diagram showing a method of detaching the magnet member from the bottom plate of the main body of the keyboard of the present embodiment.

Fig. 13 is an explanatory diagram showing a method of holding a key switch in a pressed position in a keyboard according to another embodiment.

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

Description of the symbols

1. 51: a keyboard (key input device); 2: a main body; 3. 52: a bottom plate (bottom of the main body); 6: a wiring substrate; 8: a permanent magnet; 10: a key switch (switch device); 11: a housing (fixed member); 12: a movable member; 12 a: pressing the sheet; 12a 1: a cam surface; 13: an elastic member; 14. 14': a movable piece; 14a, 14 a': a contact; 14b, 14 b': a terminal; 14e, 14 e': a pressed sheet; 15: a guide cover (fixed member); 16: a magnetic member; 19. 53: a magnet member (magnet member); 20: a support; 21: a bracket-side engagement shape; 21 a: a bracket side clamping and fixing surface; 21 b: an upper surface of the bracket-side engaging shape; 22: a bracket side disassembly shape; 26: a threaded hole; 30. 54: a hole portion; 31: a main body side engagement shape; 31 a: a main body side clamping surface; 32: main body side disassembly shape; 33: a step portion; 40: a recess; 41: a convex portion; 60: clamp apparatus

Detailed Description

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

Application example § 1

First, an example of a case where the keyboard 1 serving as the key input device and the key switches 10 serving as the switch device are used will be described with reference to fig. 1, 8, and 9. As shown in fig. 1, a plurality of key switches 10 are arranged in a row on a keyboard 1 as an input device for an electronic apparatus such as a computer. The keyboard 1 can be used as an input device for electronic equipment such as a computer in general, and can be set to a specification suitable for a computer game called electronic competition.

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

With such a configuration, when the push switch 10 is pushed in a state where the magnet member 19 is attached to the bottom plate 3, the push switch 10 can be held at the pushed position by the attractive force generated by the magnetic force of the magnetic member 16 and the magnet member 19. Thus, the key switch 10 that is not used for the game operation or the key switch 10 that may be erroneously operated during the game operation can be prevented from being erroneously operated by attaching the magnet member 19 to the bottom plate 3 and holding the key switch 10 at the pressed position. Further, since the magnet member 19 is detachably provided to the bottom plate 3, the magnet member 19 can be detached and used in a normal state.

As shown in fig. 9, the magnet member 19 attached to the base plate 3 may be configured to have a holder 20 that is detachably attached to the base plate 3. In this case, the magnet member 19 can be easily attached and detached without using a special jig but using a general-purpose jig such as a screwdriver.

Constitution example 2

[ embodiment mode 1 ]

(1. summary of keyboard 1)

First, a schematic configuration of a keyboard to which the key input device of the present embodiment is applied will be described with reference to fig. 1 and 2. Fig. 1 is a schematic perspective view showing an example of an external appearance of a keyboard 1 according to the present embodiment. Fig. 2 is a partial sectional view of the keyboard 1 of the present embodiment. The diagram indicated by reference numeral 201 in fig. 2 is a cross-sectional view taken along a line L1 extending in the front-rear direction in fig. 1, and the diagram indicated by reference numeral 202 in fig. 2 is a cross-sectional view taken along a line L2 extending in the lateral direction in fig. 1.

As shown in fig. 1, the keyboard 1 includes a main body 2, and a plurality of key switches 10 as a switch device of the present embodiment are arranged in parallel in the main body 2. Each of the key switches 10 is assigned with a function, and is classified into a character key, a numeric key, another function key, and the like according to the function. In the keyboard 1 illustrated in fig. 1, the key switches 10 having the same shape are arranged in parallel for the purpose of simplifying the structure and easily recognizing the technical contents, but the shape is not limited to this shape when mounting.

As shown in fig. 2, the push 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 fixing member. The movable member 12 is provided to be movable relative to the housing 11 and the guide cover 15, and is moved to the pressed position by a pressing operation. When the pressure generated by the pressing operation is released, the movable member 12 returns to the 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 surface; a cover 4 covering the upper surface side on which the push switch 10 is provided; a metal plate 5 disposed between the base plate 3 and the cover 4; and a wiring board 6 disposed between the metal plate 5 and the bottom plate 3. The metal plate 5 has an opening 5a to which the push switch 10 is attached, and the push switch 10 is attached to the opening 5 a. Wiring board 6 is provided with hole 6b for inserting the lower end of magnetic member 16 therethrough. The magnet member 19 is detachably attached to the base plate 3 in accordance with the attachment position of the push switch 10. The magnet member 19 has a permanent magnet.

The magnetic member 16 of 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 at the pressed position by magnetic force. In the holding mechanism for holding the movable member 12 at the pressed position by using the attractive force between the magnetic body and the permanent magnet, the key switch 10 may be provided with either the magnetic body or the permanent magnet, and the main body 2 of the keyboard 1 may be provided with either the magnetic body or the permanent magnet. Hereinafter, the keyboard 1 is assumed to be disposed on a horizontal plane, and the moving direction of the movable member 12 is assumed to be the vertical direction.

(2. Structure of Key switch 10)

Next, a schematic configuration of the push switch 10 according to the present embodiment will be described with reference to fig. 3 and 4 and fig. 2 as appropriate. Fig. 3 is a perspective view showing an example of an external appearance of the push switch 10 according to the present embodiment. Fig. 4 is an exploded perspective view of the push switch 10 of the present embodiment. As shown in fig. 3 and 4, the push switch 10 includes a case 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 as described above, is also a member for fixing the push switch 10 to the main body 2. The housing 11 has a flange portion 11a engaged with the upper surface of the metal plate 5 (see fig. 2) in the upper outer peripheral portion. The housing 11 has a boss 11b on a lower surface thereof, which is fitted into a hole 6a (see fig. 2) formed in the wiring substrate 6. The housing 11 has a base 11d on which the elastic member 13 is mounted at the center of the inner bottom surface. Base 11d is formed with hole 11c through which the lower end of magnetic member 16 is inserted. In addition, although not shown, holes or the like for inserting the terminals 14b and 14b 'formed on the pair of movable pieces 14 and 14' are provided on the lower surface of the housing 11.

The guide cover 15 is fitted to the upper portion of the housing 11. As shown by reference numeral 202 in fig. 2, the guide cover 15 has tongue pieces 15a extending downward on both lateral sides. A protrusion 15b protruding outward and engaged with 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 provided to be movable relative to the housing 11 and the guide cover 15, and is moved to the pressed position by the 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 depression direction and the opposite direction) with respect to the housing 11 and the guide cover 15. A key top member 17 (see fig. 3) that receives a pressing operation is detachably attached to the movable member 12. The movable member 12 has a pressing piece 12a (see fig. 5) that slides along a pressed piece 14e, 14e 'provided on the movable piece 14, 14' in accordance with the movement to the pressed position at the corner portion of the inner peripheral surface, and the details will be described later. Two pressing pieces 12a (see fig. 5) are formed corresponding to the pressed pieces 14e and 14 e'.

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

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

The pair of movable pieces 14 and 14' are sensor members for detecting the pressing operation of the push switch 10, and are arranged along the inner peripheral wall of the housing 11. The movable pieces 14 and 14 ' have contacts 14a and 14a ', and the contacts 14a and 14a ' are electrically connected to each other in accordance with the pressing operation of the movable member 12. The movable pieces 14 and 14 ' have terminals 14b and 14b ' and are connected to the wiring board 6 of the main body 2 via the terminals 14b and 14b '. The movable pieces 14 and 14' are also members for giving an operation feeling to the pressing operation of the movable member 12.

(3. detection of pressing operation and giving of operation feeling)

Here, the structure of the pair of movable pieces 14 and 14', the detection of the pressing operation of the push switch 10, and the structure for providing the operation feeling will be described with reference to fig. 5 and 6. Fig. 5 is a perspective view showing the structure of a pair of movable pieces 14 and 14' in the push switch 10 according to the present embodiment. Fig. 6 is a perspective view showing an example of engagement between the movable member 12 and the pair of movable pieces 14 and 14' for providing an operation feeling in the push switch 10 according to the present embodiment.

As shown in fig. 5, the movable pieces 14 and 14' are leaf spring members formed by cutting and bending a metal plate, and have a shape of "コ" in a plan view. The movable pieces 14, 14 ' have first bent pieces 14c, 14c ' and second bent pieces 14d, 14d ' formed by bending. The first bending pieces 14c and 14c ' and the second bending pieces 14d and 14d ' are provided with contacts 14a and 14a ', respectively.

The first bent pieces 14c and 14c 'have contact points 14a and 14 a' on the outer surfaces thereof, and the second bent pieces 14d and 14d 'have contact points 14a and 14 a' on the inner surfaces thereof. The movable pieces 14 and 14 'are arranged such that the contact point 14a of the first bent piece 14c of the movable piece 14 is opposed to the contact point 14 a' of the second bent piece 14c 'of the movable piece 14', and the contact point 14a 'of the first bent piece 14 c' of the movable piece 14 'is opposed to the contact point 14a of the second bent piece 14c 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 and 14 ' have pressed pieces 14e and 14e ' at the distal end portions of the first bent pieces 14c and 14c '. The pressed pieces 14e and 14 e' are formed by bending in a cut-and-raised manner. The pressed pieces 14e and 14 e' are portions that receive the pressing force generated by the pressing piece 12a provided on the movable member 12 in accordance with the pressing of the movable member 12. The pressed pieces 14e and 14e 'are curved so as to bulge outward, and have convex curved surfaces 14e1 and 14e 1' at the center in the vertical direction. The vertical end sides of the pressed pieces 14e and 14 e' are relief surfaces inclined inward.

As shown in fig. 6, the movable member 12 has a pressing piece 12a at a corner portion of the inner peripheral surface and at a position corresponding to the pressed pieces 14e and 14e 'of the movable pieces 14 and 14'. Two pressing pieces 12a are provided corresponding to the two sets of contacts 14a and 14a 'of the movable pieces 14 and 14'. The pressing piece 12a extends in the vertical direction and protrudes inward. The pressing piece 12a has an inclined shape that enters from the upper side to the lower side, and the surface facing the inner side is a cam surface 12a1 that comes into contact with the pressed pieces 14e and 14 e'.

Fig. 6 shows a free state in which the movable member 12 is not pressed. As shown in fig. 6, in the free state, the innermost protruding lower end portion of the cam surface 12a1 of the pressing piece 12a abuts against the convex curved surface 14e1 of the pressed piece 14 e. Therefore, the first bent piece 14c is elastically deformed and pushed inward, and the contact 14a provided on the first bent piece 14c is separated from the contact 14a 'provided on the second bent piece 14 d' facing the first bent piece and does not contact the contact.

When the movable member 12 is pushed from the free state and moves downward, the cam surface 12a1 abutting against the convex curved surface 14e1 of the pressed piece 14e moves toward the upper end portion where the amount of projection is small. With this movement, the first bent piece 14c pushed inward is gradually restored.

Further, while the movable member 12 is moving to the depression position, the cam surface 12a1 slides with respect to the pressed piece 14e, and an operation feeling can be given to the user who performs the depression operation of the movable member 12.

At any position between the free state and the pressed position of the movable member 12, the first bent piece 14c is completely restored, and the contact 14a (14a ') provided in the first bent piece 14c comes into contact with the contact 14a ' provided in the second bent piece 14d ' facing thereto. As a result, the terminals 14b and 14b 'of the movable pieces 14 and 14' are turned on, and it is detected that the push switch 10 is pressed.

(4. installation of Key switch 10)

Next, the attachment of the push switch 10 of the present embodiment to the main body 2 will be described with reference to fig. 2. As shown in fig. 2, the push switch 10 is fitted into the opening 5a formed in the metal plate 5, and the flange portion 11a of the housing 11 is locked to the upper surface of the metal plate 5. As shown by reference numeral 202 in fig. 2, the projection 15a of the guide cover 15 is locked to the lower surface of the metal plate 5. A boss 11b formed on the lower surface of the housing 11 is fitted in a hole 6a formed in the wiring substrate 6. Terminals 14b and 14b 'of movable pieces 14 and 14' are connected to terminals on wiring board 6 using solder or the like.

(5. baseboard 3)

Next, the base plate 3 to which the permanent magnet 8 is detachably attached will be described with reference to fig. 7. Fig. 7 is a partially enlarged perspective view showing the rear surface 3a side of the bottom plate 3 of the main body 2 of the keyboard 1 according to the present embodiment. As shown in fig. 7, a magnet member 19 is attached to the back surface 3a of the base plate 3 in accordance with the attachment position of the push switch 10. A hole 30 for attaching the magnet member 19 is formed in the back surface 3a of the base plate 3, and the magnet member 19 is detachably attached to the hole 30. In the present embodiment, the magnet member 19 includes the holder 20, and the holder 20 is detachably attached to the hole 30. The permanent magnet 8 is held by the holder 20. A main body side engagement shape 31 and a main body side removal shape 32, which will be described later, are formed on the inner periphery of the hole 30.

(6. method of holding and releasing the Key switch 10)

Next, a method of holding the push switch 10 at the pressed position and a method of releasing the hold will be described with reference to fig. 8. Fig. 8 is an explanatory diagram illustrating a method of holding the key switch 10 at the pressed position in the keyboard 1 of the present embodiment. As shown by reference numeral 801 in fig. 8, a magnet member 19 is attached to the hole 30 of the back surface 3a of the base plate 3 to hold the push switch 10 at the pushed position.

Next, as shown by reference numeral 802 in fig. 8, the push switch 10 is pushed and moved to the pushed position. Thereby, the magnetic member 16 of the push switch 10 is attracted (attracted) by the magnet member 19, and the push switch 10 is held at the pressed position. Since the magnetic member 19 attracts (attracts) the magnetic member 16 more than the restoring force of the elastic member 13, the push switch 10 is held at the pushed position even if the pushed finger is released.

In order to release the hold of the push switch 10 being held at the pressed position, the magnet member 19 is detached from the hole portion 30. This eliminates the attraction between the magnetic member 19 and the magnetic member 16, and the push switch 10 returns to the free state by the restoring force of the elastic member 13.

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

(7. support 20)

Next, the structure of the holder 20 of the magnet member 19 will be described with reference to fig. 9. Fig. 9 is a diagram showing a structure of a magnet member 19 attached to the bottom plate 3 of the main body 2 of the keyboard 1 of the present embodiment. The drawing of reference numeral 901 is a perspective view on the upper surface side, the drawing of reference numeral 902 is a perspective view on the back surface side, and reference numeral 903 is a side view as 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 columnar permanent magnet 8 and a holder 20 for holding the permanent magnet 8. The holder 20 is a cylindrical member having a low height. As shown by reference numeral 901, a hole 25 for holding the permanent magnet 8 is formed in the upper surface of the holder 20, and the permanent magnet 8 is held in the hole 25. As shown by reference numeral 902, a screw hole 26 used when attaching and detaching the holder 20 (magnet member 19) to and from the hole 30 is provided in the back surface 20a of the holder 20. The bracket 20 is attached to the hole portion 30 by rotating the bracket 20 in a clockwise direction (toward the threaded hole 26) using the threaded hole 26, and the bracket 20 is detached from the hole portion 30 by rotating the bracket 20 in a counterclockwise direction (toward the threaded hole 26).

The holder 20 has a holder-side locking shape 21 and a holder-side removal shape 22 on its outer peripheral surface. The holder-side locking shape 21 is a shape for engaging with a main body-side locking shape 31 (see fig. 10) described below formed on an inner peripheral portion of the hole 30 of the bottom plate 3 and attaching the holder 20 to the hole 30. The holder-side engaging 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 21a of the bracket-side locking shape 21 is received by the upper surface 31a of the main-body-side locking shape 31, and the bracket 20 is locked in the hole 30. The lower surface 21a of the holder-side locking shape 21 corresponds to a holder-side locking surface that is locked to the upper surface 31a of the main body-side locking shape 31, which is a main body-side locking surface formed in the inner peripheral portion of the hole 30, with the radial direction of the holder 20 being the in-plane direction. When the holder 20 (magnet member 19) is attached, the upper surface 21b of the holder-side locking shape 21 abuts against 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 bracket-side locking shape 21 is referred to as a bracket-side locking surface 21a, and the upper surface 31a of the main body-side locking shape 31 is referred to as a main body-side locking surface 31 a.

The holder-side removable shape 22 is engaged with a main body-side removable shape 32 (see fig. 7 and 10) described below formed on an inner peripheral portion of the hole 30 of the bottom plate 3, and is configured to move the holder 20 (the magnet member 19) toward the entrance side of the hole 30. The holder-side removable shape 22 is an inclined surface formed on the upper surface of a protruding portion that protrudes outward in the radial direction of the holder 20. The inclined surface forming the holder-side removable shape 22 has an inclination approaching the rear surface 20a of the holder 20 from the upstream side toward the downstream side in the removal direction. The holder-side detachable shape 22 is guided by the main body-side detachable shape 32 (see fig. 7 and 10) formed by an inclined surface, and the holder 20 moves toward the entrance side of the hole 30.

The holder-side engaging shape 21 and the holder-side disengaging shape 22 are provided in a plurality of numbers, two in this example, in the circumferential direction on the outer peripheral portion of the holder 20.

(8. hole 30)

Next, the structure of the hole 30 provided in the rear surface 3a of the base plate 3 will be described with reference to the partially enlarged view of fig. 7 and fig. 10. Fig. 10 is a sectional view of hole 30 provided in bottom plate 3 of main body 2 of 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 commensurate with the outer shape of the holder 20. A stepped portion 33 shallower than the bottom of the hole portion 30 is formed on the inner periphery of the hole portion 30. The step 33 extends in the circumferential direction while expanding outward in the radial direction (the radial direction of the holder 20) from the inner circumferential surface of the hole 30. The stepped portion 33 abuts against the upper surface 21b of the holder-side locking shape 21 in the holder 20 inserted into the hole 30.

A main body side locking shape 31 is formed on the downstream side (front side in the mounting direction) of the step portion 33 in the mounting direction. Further, a main body side detachable shape 32 is formed on the downstream side (front side in the detaching direction) of the step portion 33 in the detaching direction.

The main body side locking shape 31 is a shape for engaging with a holder side locking shape 21 (see fig. 9) formed in the outer peripheral portion of the holder 20 and attaching the holder 20 to the hole portion 30. The main body side locking shape 31 is configured by forming a space on the downstream side in the mounting direction of the step portion 33 so that the portion of the back surface 3a of the bottom plate 3 remains and the inner peripheral surface including the hole portion 30 is cut inward, and the portion of the back surface of the bottom plate 3 remains corresponds to the main body side locking shape 31.

Further, a fine concave portion 40 extending in the radial direction of the hole 30 (the radial direction of the holder 20) is formed in the main body side locking surface 31a which is the upper surface of the main body side locking shape 31, and a fine convex portion 41 extending in the radial direction of the holder 20 is formed in the holder side locking surface 21a which is the lower surface of the holder side locking shape 21 (see fig. 9). The bracket 20 is fixed (locked) at the locking position by fitting the concave portion 40 of the main body side locking shape 31 into the convex portion 41 of the bracket side locking shape 21. Further, the main body side locking shape 31 may be provided with the convex portion 41, and the holder side locking shape 21 may be provided with the concave portion 40.

The main body-side detachable shape 32 is engaged with the holder-side detachable shape 22 (see fig. 9) formed on the outer peripheral portion of the holder 20, and is a shape for moving the holder 20 toward the entrance side of the hole 30. The main body side detachable shape 32 is formed of an inclined surface that approaches the rear surface 3a of the bottom plate 3 from the upstream side toward the downstream side in the detaching direction of the step portion 33.

(9. method of attaching and detaching magnet Member 19)

Next, a method of attaching and detaching the magnet member 19 will be described with reference to fig. 11 and 12. Fig. 11 is an explanatory diagram illustrating a method of attaching the magnet member 19 to the bottom plate 3 of the main body 2 of the keyboard 1 of the present embodiment. Fig. 12 is an explanatory diagram illustrating a method of detaching the magnet member 19 from the bottom plate 3 of the main body 2 of the keyboard 1 of the present embodiment. The magnet member 19 is attached and detached in a state where the keyboard 1 is turned upside down and the bottom plate 3 is directed upward. Here, the attachment and detachment of the magnet member 19 will be described with the holder 20 as a subject.

When attaching the holder 20, the holder 20 is inserted into the hole 30 in a shape matching with the shape thereof as shown by reference numeral 1101 in fig. 11. The view of reference numeral 1104 is a cross-sectional view of the arrow on the line A-A of reference numeral 1101 (but shown with the front and back reversed). In this state, the upper surface 21b of the holder-side locking shape 21 abuts against the stepped portion 33 formed in the inner peripheral portion of the hole portion 30. Next, a jig such as a straight screwdriver or a coin is engaged with the screw hole 26, and the holder 20 is rotated clockwise as the mounting direction.

Thereby, as shown by reference numeral 1102, the holder-side locking shape 21 is inserted below the main body-side locking shape 31 (below during operation), as shown by reference numeral 1105, the holder-side locking shape 21 is locked to the main body-side locking shape 31, and the holder 20 is attached to the hole 30. Symbol 1105 is a cross-sectional view of the symbol 1102 taken along the line A-A of the arrow (shown with the front and back reversed). In the locked state, the concave portion 40 of the main body side locking shape 31 is fitted to the convex portion 41 of the holder side locking shape 21, and rotation of the holder 20 in the detaching direction is restricted.

As shown by reference numeral 1103, the wall-shaped portion 21c extending from the holder-side locking surface 21a toward the back 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 being excessively rotated in the mounting direction.

When the holder 20 is detached, as shown in the diagrams of symbols 1201 to 1203 in fig. 12, the jig is engaged with the screw hole 26 and the holder 20 is rotated counterclockwise as the detaching direction in the same manner as in the attaching. The diagrams 1204 to 1206 are arrow sectional views (shown with the front and back reversed) along the line B-B of the diagrams 1201 to 1203.

Thereby, the holder-side removable shape 22 slides along the main-body-side removable shape 32, and the holder 20 is moved toward the entrance side of the hole 30 by the inclination, so that the holder 20 can be taken out from the hole 30. By moving the holder 20 toward the inlet side of the hole 30, the magnetic member 16 and the magnetic member 19 are separated, and the attraction force of the permanent magnet 8 is weakened, whereby the holder 20 can be taken out from the hole 30.

(10. Effect)

According to the above configuration, the magnetic member 16 having a magnetic body provided to the movable member 12 of the push switch 10 is attracted by the magnetic member 19 having a permanent magnet provided to the bottom plate 3 of the main body 2. This allows the movable member 12, i.e., the push switch 10, to be held at the pressed position. Further, since the magnet member 19 is detachably attached to the bottom plate 3, the magnet member can be used as a normal keyboard by being detached in advance without holding the push switch 10 at the pressed position.

When the push switch 10 is disposed in the main body 2 of the keyboard 1, it is heated in a step 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, the magnetic force may be reduced by the influence of heat. In contrast, as described above, since the magnetic body (magnetic member 16) having high heat resistance is provided on the push switch 10 side, the force for holding the push switch 10 at the pressed position can be prevented from being lowered by the influence of heat.

Further, since the hole 11c is provided in the housing 11, the magnetic member 16 can be brought closer to the magnet member 19, and the attraction (attraction) action by the magnetic force can be further improved. In the above configuration, since the hole 6b is also provided in the wiring board 6 of the main body 2, the magnetic member 16 can be brought closer to the magnet member 19, and the attraction (attraction) action by the magnetic force can be further improved.

The holder 20 has a holder-side locking shape 21 on the outer peripheral portion, and by using such a holder 20, the holder 20 (magnet member 19) can be easily attached to the bottom plate 3 of the main body 2. The holder-side locking surface 21a locked to the body-side locking surface 31a is provided with a convex portion 41 that engages with the concave portion 40 of the body-side locking surface 31a, and the magnet member 19 can be locked easily without falling off using the above members.

The holder 20 is provided with a holder-side detachable shape 21 on the outer peripheral portion, and the holder-side detachable shape 21 is engaged with the inner peripheral portion of the hole portion 30 by rotating the holder 20 in the detaching direction, thereby moving the holder 20 toward the entrance side of the hole portion. This makes it possible to easily detach the magnet member 19 from the hole 30 against the attraction force with the magnetic member 16.

[ embodiment 2 ]

The following describes another embodiment of the present invention. For convenience of explanation, members having the same functions as those described in the above embodiment are denoted by the same reference numerals, and the explanation thereof will not be repeated.

Fig. 13 is an explanatory diagram illustrating a method of holding the key switch 10 at 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 of embodiment 1 in that a bottom plate 52 is provided instead of the bottom plate 3, and the other structures are the same. The bottom plate 52 is detachably attached with a magnet member 53 made of the permanent magnet 8 itself, which does not include the holder 20, instead of the magnet member 19 including the holder 20. The bottom plate 52 is formed with a hole 54 for accommodating the magnet member 53 (permanent magnet 8) and loosely fitting the magnet member 53.

As shown by a reference numeral 1301 in fig. 13, the push switch 10 is pushed down with the magnet member 53 inserted into the hole 54 in order to hold the push switch 10 at the pushed position. As a result, as shown by reference numeral 1302 in fig. 13, the magnetic member 16 of the push switch 10 is attracted to the magnet member 53, the magnet member 53 is held without coming off, and the push switch 10 (movable member 12) is held at the pressed position.

Fig. 14 is an explanatory diagram illustrating 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, the push switch 10 is pulled in the direction opposite to the pressing direction by using the push switch remover 60 in order to release the hold of the push switch 10. As a result, as shown by 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 naturally falls, and the push switch 10 returns to the free state.

In such a configuration, it is not necessary to provide the hole 54 formed in the bottom plate 52 with a locking shape or the like, and therefore the bottom plate 52 can be manufactured at low cost. Further, since it is not necessary to provide the magnet member 53 with a locking shape, the number of components can be reduced.

3 modification example

The present embodiment of the present invention has been described in detail, but the above description is merely an example of the present invention in all aspects. It is needless to say that various improvements and modifications can be made without departing from the scope of the present invention. For example, the following modifications can be made. In the following, the same reference numerals are given to the same components as those of the above embodiment, and the description thereof will be omitted as appropriate. The following modifications can be combined as appropriate.

〈3.1〉

In the keyboard 1, 51, all the key switches are configured as the key switches 10 of the present embodiment. However, the present invention is not limited to this configuration, and for example, a conventional configuration may be adopted as the key switch used for game operation, and the key switch 10 may be adopted only for the key switch located in the periphery thereof and likely to be operated erroneously. In this case, the magnet members 19 and 53 detachably provided on the main body 2 of the keyboard 1 and 51 are provided corresponding to the arrangement positions of the push switches 10.

〈3.2〉

The push switch 10 can also be grouped with a magnet assembly 19 having a holder 20. That is, the push switch 10 may have the magnet member 19 having the holder 20 or the holder 20 as a component. By providing the holder 20 detachably attached to the main body 2, the keyboard 1 capable of holding the key switches 10 at the depressed positions with a simple structure without using electricity can be more easily realized.

The present invention is not limited to the above embodiments, and various modifications can be made within the scope of the claims, and embodiments obtained by appropriately combining the technical means disclosed in the respective embodiments are also included in the technical scope of the present invention.

Claims (8)

1. A key input device provided with a plurality of switch devices,

the switch device is provided with:

a fixing member fixed to a main body of the key input device;

a movable member that is provided so as to be movable relative to the fixed member and moves to a pressed position by a pressing operation;

an elastic member that pushes back the movable member in a direction opposite to a pressing direction; and

a magnetic member having a magnetic body and moving integrally with the movable member,

a magnet member having a permanent magnet and attracting the magnetic member is detachably attached to a bottom of the body,

the force with which the magnet member attracts the magnetic member is larger than the force with which the elastic member pushes back the movable member in the opposite direction.

2. The key input apparatus of claim 1,

the fixing member has a hole through which a tip portion of the magnetic member in a pressing direction is inserted,

in a state where the movable member is located at the pressed position, a tip end portion of the magnetic member in a pressing direction is closer to a bottom portion of the main body than the fixed member.

3. Key input device according to claim 1 or 2,

a wiring substrate disposed below the fixing member,

the wiring board has a hole for inserting a tip end portion of the magnetic member in a pressing direction,

in a state where the movable member is located at the pressed position, a tip end portion of the magnetic member in a pressing direction is closer to a bottom portion of the main body than the wiring board.

4. Key input device according to any of claims 1 to 3,

the magnet member includes a holder that holds a permanent magnet and is attachable to and detachable from the main body.

5. A key input device according to claim 4,

the magnet member is attached to a hole provided in a bottom of the main body from a back surface side of the main body,

the holder is rotatable with respect to the hole portion,

an engagement shape that engages with each other by rotating the holder in the mounting direction is provided on the outer peripheral portion of the holder and the inner peripheral portion of the hole, and the holder is engaged with the hole.

6. The key input apparatus of claim 5,

each of the locking shapes formed on the outer peripheral portion of the stent and the inner peripheral portion of the hole portion includes locking surfaces that come into contact with each other to be locked with each other with the radial direction of the stent as the in-plane direction,

each of the locking surfaces has a concave portion or a convex portion extending in a radial direction of the holder and fitted to each other.

7. Key input device according to any of claims 4 to 6,

the magnet member is attached to a hole provided in the bottom of the main body from the back side of the main body,

the holder is rotatable with respect to the hole portion,

the outer peripheral portion of the holder and the inner peripheral portion of the hole portion are provided with a detachable shape that moves the magnet member toward the entrance side of the hole portion by rotating the holder in a detachable direction to engage with each other.

8. Key input device according to any of claims 1 to 3,

the main body has a hole portion in the back of the bottom for loosely fitting the magnet member,

the magnet member is loosely fitted in the hole and held in the hole by an attractive force with the magnetic member.

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