WO2007010904A1

WO2007010904A1 - Switch device

Info

Publication number: WO2007010904A1
Application number: PCT/JP2006/314187
Authority: WO
Inventors: Tatsuaki Kawase
Original assignee: Alps Electric Co., Ltd.
Priority date: 2005-07-19
Filing date: 2006-07-18
Publication date: 2007-01-25
Also published as: JP2007026956A

Abstract

[PROBLEMS] To provide a switch device capable of preventing a magnet from slipping down or being broken and stably switchable even if the temperature changes. [MEANS FOR SOLVING PROBLEMS] This switch device comprises the magnet (9) and a magnetic-electric conversion element (6) disposed oppositely to each other, an operation member (2) displaceable by pressing operation, and a holder member (7) capable of storing the magnet (9) or the magnetic-electric conversion element (6) and movable according to the displacement of the operation member (2). When the position of the magnet (9) relative to the magnetic-electric conversion element (6) is displaced according to the movement of the holder member (7), the output signal of the magnetic-electric conversion element (6) is switched. The switch device further comprises a receiving member brought into contact with the holder member (7) to stop its movement. The front face of the holder member (7) in the moving direction comprises an area (22) overlapped with the end face of the magnet (9) or the magnetic-electric conversion element (6) and an area not overlapped therewith. Projected parts (19) are formed in the non-overlapped area (23) and/or the area of the receiving member in contact with the non-overlapped area.

Description

Specification

Switch device

Technical field

The present invention relates to a non-contact type switch device in which a magnet and a magnetoelectric conversion element are combined, and in particular to a switch device capable of performing stable switching operation.

Background art

A non-contact switch device that switches the output signal from the magnetoelectric transducer by changing the magnetic force by moving the magnet by pressing the operation member has a longer life than a conventional contact switch device. It is expected as a next-generation switch. As such a switch device, for example, there is one as mentioned in Patent Document 1.

Patent Document 1: Japanese Patent Application Laid-Open No. 2003-151390

Disclosure of the invention

Problem that invention tries to solve

In the conventional switch device, the operation member is disposed in the case via the inertia member, the magnet can be moved by the pressing operation of the operation member, and when the pressing of the operation member is released, the operation is performed by the elastic member. The member and the magnet are configured to be returned to their original positions. Therefore, the magnet is urged by the return force of the elastic member! There is a problem that the magnet moves well and collides with the case, and the magnet slips or breaks due to the impact. Also, the conventional switch device is configured to move the magnet in conjunction with the movement of the operation member, and the switching position of the signal of the magnetoelectric conversion element changes under the influence of temperature change etc. In the configuration of gradually moving the magnetoelectric transducer, the switching position of the signal becomes unstable.

The present invention has been made in view of the above problems, and a switch device capable of preventing magnet sliding or breakage, and a switch device capable of performing stable switching operation even with temperature change and the like. Intended to be provided.

Means to solve the problem

[0005] In order to solve the above problems, a switch device according to the present invention comprises a magnet and a magnetoelectric conversion element disposed opposite to each other, an operation member displaceable by pressing operation, and the magnet A magnetoelectric conversion element is accommodated, and the holder member movable with the displacement of the operation member is provided, and the relative position of the magnet with respect to the magnetoelectric conversion element is displaced as the holder member moves. In a switch device in which an output signal of an element is switched, a receiving member which abuts on the holder member to stop its movement is provided, and a moving direction front surface of the holder member overlaps an area overlapping with an end face of the magnet or the magnetoelectric conversion element It is characterized in that a projection is formed in the non-overlapping area and the area of the non-overlap area and the area of the receiving member in contact with the non-overlap area.

Further, in the switch device according to the present invention, the projection does not overlap with the end face of the magnet or the magnetoelectric conversion element on both sides in the moving direction of the holder member and Z or the area of the receiving member in contact with them. It is characterized in that it is formed.

Further, the switch device according to the present invention is provided with a transmission mechanism for converting the operation force of the operation member to move the holder member in a predetermined direction, and the transmission mechanism moves the operation portion to a predetermined position. It is provided with a reversing panel which reverses the moving force to the holder member when it is displaced, and the displacement of the relative position of the magnet to the magnetoelectric transducer before and after the reversing panel causes the output signal of the magnetoelectric transducer to switch. It is configured as a feature.

Furthermore, the switch device according to the present invention is characterized in that the reversing panel is bridged between the operation member and the holder member.

And, the switch device according to the present invention is characterized in that the above-mentioned reversing panel is made of an S-shaped bent wire material.

[0010] Further, in the switch device according to the present invention, the holder member is formed with a groove portion to which the tip end portion of the reversing panel is rotatably attached.

[0011] Furthermore, the switch device according to the present invention is characterized in that the holder member has a slide portion for being guided in a predetermined direction.

[0012] Furthermore, the switch device according to the present invention is characterized in that the magnet is side-covered to reduce the leakage flux.

And, the switch device according to the present invention is an operation member which can be displaced by a pressing operation; A magnetic switch device comprising: a magnet movable with the displacement of the operation member; and a magnetoelectric conversion element, wherein an output signal is switched by displacement of the magnet relative to the magnetoelectric conversion element,

A transmission mechanism for converting the operation force of the operation member to move the magnet in a predetermined direction is provided, the transmission mechanism includes a reversing panel for reversing the movement force to the magnet, and the operation member is displaced to a predetermined position. When this is done, the above-mentioned inversion panel is inverted and the output signal is switched.

Further, in the switch device according to the present invention, the magnet is disposed in the holder member, and the reversing panel is a wire rod bent in an S-shape, and the operation member and the holder portion It is characterized by being erected between materials.

[0015] Furthermore, the switch device according to the present invention is characterized in that the holder member is formed with a groove portion to which the tip portion of the reversing panel is rotatably attached.

Effect of the invention

According to the switch device according to the present invention, the receiving member is provided in contact with the holder member to stop its movement, and the front surface in the moving direction of the holder member overlaps and does not overlap the end face of the magnet or the magnetoelectric conversion element. The projection is formed in the non-overlapping region and the region of the receiving member in contact with the non-overlapping region Z, so that the receiving member is not in contact with the region overlapping the end face of the magnet or the magnetoelectric transducer. The impact due to the collision between the holder member and the receiving member does not directly act on the magnet or the magnetoelectric conversion element, and the magnet or the magnetoelectric conversion element can be prevented from slipping or being damaged.

Further, according to the switch device of the present invention, the protrusion is formed in the region not overlapping the end face of the magnet or the magnetoelectric conversion element on both sides in the moving direction of the holder member and the region of Z or the receiving member in contact with them. As the holder member does not directly act on the magnet or the magnetoelectric conversion element even when the holder member returns to the predetermined position, the magnet or the magnetoelectric conversion element can be further prevented from slipping or breaking.

Furthermore, according to the switch device of the present invention, a transmission mechanism is provided for converting the operation force of the operation member to move the holder member in a predetermined direction, and the transmission mechanism has the operation portion at a predetermined position. It is equipped with a reversing panel that reverses the moving force to the holder member when it is displaced up to, and the output signal of the magnetoelectric conversion element is switched by the displacement of the relative position of the magnet to the magnetoelectric conversion element before and after the reversal of the reversing spring. Since the output signal of the magnetoelectric conversion element can be switched at positions before and after inversion, the displacement amount of the operation member necessary for switching the output signal can be made constant, and stable switching operation can be performed.

Furthermore, according to the switch device of the present invention, the reversing panel is constructed between the operation member and the holder member, so that stable switching operation can be performed with a simple configuration. It can be manufactured inexpensively.

[0020] And, according to the switch device of the present invention, the reverse panel can be easily manufactured as well as being inexpensive because it can be a wire rod bent in an S-shape.

Further, according to the switch device according to the present invention, the holder member is formed with the groove portion to which the front end portion of the reversing panel is rotatably attached, so that the holder can be easily assembled. Can be improved.

Furthermore, according to the switch device of the present invention, the holder member has the slide portion for being guided in the predetermined direction, so that the stability of switching of the output signal can be improved.

Furthermore, according to the switch device of the present invention, the magnet is covered on the side surface so as to reduce the leakage magnetic flux, so that the magnet having the minimum magnetic force necessary for switching the output signal can be used. It can often switch the output signal.

BEST MODE FOR CARRYING OUT THE INVENTION

An embodiment of the present invention will be described in detail with reference to the drawings. Fig. 1 is an exploded perspective view of the switch device according to this embodiment, Fig. 2 is a cross-sectional view of the switch device, Fig. 2 (a) is a cross-sectional view, and Fig. 2 (b) is an A-- of Fig. 2 (a). FIG. 2 (c) is a cross-sectional view taken along line B-B in FIG. 2 (b). As shown in these figures, the switch device in this embodiment forms a box shape from the cover member 1 and the substrate 5, and the operation member 2 that can be displaced by pressing operation and the magnet 9 are accommodated in the box shape. A holder member 7 movable with displacement of the member 2 and a Hall IC 6 as a magnetoelectric conversion element are accommodated. As shown in FIG. 1, a through hole 10 is provided on the top surface of the cover member 1 so that the operation member 2 can be freely protruded. A cap 4 made of rubber or the like is provided on the top of the through hole 10 as a waterproof measure. Further, as shown in FIGS. 2 (a) and 2 (b), the cover member 1 is formed with a housing portion 11 so as to be directed downward from the penetration portion 10 to conform to the shape of the operation member 2, Reference numeral 11 has an operation member 2 disposed thereon and also has a role of guiding the operation member 2 in the vertical direction.

Then, the operation member 2 is disposed on the substrate 5 via the elastic member 3 corresponding to the position of the housing portion 11, and the cover portion 21 formed at the lower portion of the operation member 2 is not pressed. The first ceiling surface 13 is biased. Further, an engaging member 14 is provided on the side of the operation member 2, and an axial hole 15 to which a reversing panel 8 described later is rotatably mounted is formed in the engaging member 14.

Further, on the substrate 5, a holder member 7 in which the magnet 9 is accommodated and a Hall IC 6 are disposed to face each other. And, on the inner surface of the cover member 1 on the side where the holder member 7 is disposed, a guide portion 12 for guiding the holder member 7 in the vertical direction is formed.

The magnet 9 is a permanent magnet such as a rare earth magnet, for example, and is held by a holder member 7 formed in a substantially box shape, with the upper part being an N pole and the lower part being an S pole. Also, one side of the magnet 9 is exposed from the holder member 7. Then, the Hall IC 6 is disposed to face the side surface of the magnet 9 exposed from the holder member 7.

The Hall IC 6 is configured as a Hall element or the like, and detects the magnetic field from the magnet 9 by the Hall effect and outputs an electric signal. The output from the Hall IC 6 is switched when the magnetic field changes with respect to the Hall IC 6, and the switching operation is performed by switching the output. In this embodiment, the output from the Hall IC 6 is turned off when the Hall IC 6 detects the magnetic field of the N pole, and the output is turned ON when the magnetic field of the S pole is detected. The hole IC 6 is disposed at a substantially middle portion between the upper surface of the cover member 1 and the substrate 5 as shown in FIG. 2C. In addition, terminals 16 and 16 are derived at the lower part of the Hall IC and connected to an external device not shown.

The holder member 7 for holding the magnet 9 is placed on the substrate 5, and as shown in FIG. 2 (c), the block body is cut out so as to conform to the outer shape of the side force magnet 9. And internally Stone 9 is set. That is, the magnet 9 is covered by the holder member 7 except for the side facing the Hall IC 6 and has an effect of reducing the leakage flux. Further, in the holder member 7, the slide portion 17 corresponding to the guide portion 12 of the above-mentioned cover member 1 is formed on the surface opposite to the surface on which the magnet 9 is exposed.

The upper surface of the holder member 7 is composed of a region 22 overlapping the upper surface of the magnet 9 and a region 23 not overlapping the upper surface of the magnet 9 which is the upper surface of the side wall 18 covering the side surface of the magnet 9. Then, the side wall 18 is extended upward so that the area 23 which does not overlap with the upper surface of the magnet 9 overlaps the area 22 where the area 23 overlaps with the area 22. There are multiple formations. Further, the lower surface is also composed of a region 22 overlapping with the lower surface of the magnet and a region 23 not overlapping the same as the upper surface, and a protrusion 19 is formed in the region 23 not overlapping. Further, the holder member 7 is provided with a groove portion 20 to which a reversing panel 8 to be described later is attached at a substantially middle portion of the side portion, and the operation member 2 and the holder member 7 are connected by attaching the reversing panel 8 to the groove portion 10.

The holder member 7 is movable in the vertical direction by the guide portion 12 of the cover member 1, and can be moved from the substrate 5 to the ceiling surface 13 of the cover member 1. For this reason, the upper surface of the substrate 5 and the ceiling surface 13 of the cover member 1 are receiving members for stopping the movement of the holder member 7, and when the holder member 7 moves upward, the upper surface of the magnet 9 on the upper surface of the holder member 7 is heavy The projection 19 formed in the area 23 abuts against the ceiling surface 13 and when the holder member 7 is returned downward, the projection 19 formed in the area 23 which does not overlap with the lower surface of the magnet on the lower surface It comes in contact with the substrate 5.

Further, as a transmission mechanism for converting the operation force of the operation member 2 to move the holder member 7 upward, a reversing panel 8 connecting the operation member 2 and the holder member 7 is provided. The reversing panel 8 is an S-shaped bent wire rod and has elasticity. One end of the reversing panel 8 is inserted into an axial hole 15 formed in the engaging member 14 of the operation member 2, and the other end is accommodated in a groove 20 formed in the side of the holder member 7. Thus, both ends of the reversing panel 8 are rotatably engaged. As shown in FIG. 2B, the engaging member 14 and the groove 20 press the operating member 2 so that the engaging member 14 is disposed higher than the groove 20 in the V, N, and so on states. The reversing panel 8 is bridged between the operating member 2 and the holder member 7 and is in a left-down state. Next, switching of the output signal from the Hall IC 6 will be described with reference to FIG. Fig. 3 shows the process of switching the output signal with the operation of the operation member 2. Fig. 3 (a) left: when not pressed, Fig. 3 (b): until the reversing panel 8 becomes horizontal The state in which the operation member 2 is moved, FIG. 3C shows the state in which the operation member 2 is further moved downward. And each right figure of FIG. 3 is AA sectional drawing of the corresponding left figure, and shows the positional relationship of Hall IC 6 and the magnet 9 in each state.

As shown in FIG. 3 (a), when the operation member 2 is not pressed, the flange portion 21 of the operation member 2 is urged against the ceiling surface 13 of the cover member 1 by the elastic member 3. Then, the holder member 2 is placed on the substrate 5, and the reversing panel 8 is in the left-down state as illustrated. Therefore, as shown in the right part of Fig. 3 (a), a magnetic field of the N pole of the magnet 9 is generated near the Hall IC 6, and the output of the Hall IC 6 is off.

Since the holder member 7 is placed on the substrate 5 and can be moved only upward by the guide portion 12, the operation member 2 is moved until the reversing panel 8 becomes horizontal. In the process, the moving force is applied downward from the reversing panel 8 to the holder member 7, so the holder member 7 does not move. Therefore, when the operation member 2 is gradually moved downward until the inversion panel 8 becomes horizontal, the inversion panel 8 is gradually compressed while biasing the holder member 2 obliquely downward, as shown in FIG. 3 (b). It will be in the state compressed horizontally as shown in the left figure. Therefore, as shown in the right figure of Fig. 3 (b), the positional relationship between Hall IC 6 and magnet 9 does not change, and the output of Hall IC 6 remains off.

Then, when the operation member 2 is further moved downward from this state, the resilient panel 8 which is compressed in the horizontal direction is released by elastic force and is inverted, as shown in FIG. Move the holder 2 upward. Therefore, as shown in FIG. 3 (c), the magnetic field in the vicinity of the Hall IC 6 can be changed from the N pole to the S pole. That is, when the reversing panel 8 is reversed, the output of the hole IC can be switched on, and the displacement amount of the operation member necessary for switching the output can be made constant, so stable switching operation can be performed.

Further, when the holder member 2 is vigorously moved by the inversion of the reversing panel 8 and collides with the ceiling surface 13 of the cover member 1, the protrusion formed in the area 23 not overlapping the end face of the magnet 9 The area 19 where the portion 19 collides with the ceiling surface 13 and overlaps the end face of the magnet 9 of the holder member 7 is the ceiling surface Since 13 is not hit, the impact of the collision does not act directly on the magnet 9 and it is possible to prevent the magnet 9 from slipping or breaking. Also, since the projection 19 is formed on the lower surface of the holder member 7 as well as on the area 23 which does not overlap with the end face of the magnet as the upper surface, releasing the pressing of the operation member 2 causes the elastic member 3 to return. The impact due to the collision between the holder member 7 and the substrate 5 when the reversing panel 8 is flipped downward does not directly act on the magnet 9, so that the magnet 9 can be prevented from slipping or breaking.

Further, in the present embodiment, the protrusion 19 is formed in the area 23 not overlapping the end face of the magnet 9. The ceiling surface 13 of the cover member 1 and the substrate 5 do not overlap the end face of the magnet 9 The projection 19 may be provided in the area in contact with the projection 19, and the projection 19 may be provided in both of them. In addition, when the protrusion 19 is formed of a flexible material or the like, the shock absorbing action and the muffling action can be improved.

Further, in the present embodiment, the operation panel 2 is inverted by moving the operation member 2 to a predetermined position, and the holder member 7 is moved at a stroke. However, in conjunction with the displacement of the operation member 2. The holder member 7 may be displaced. In this case, even if the holder member 7 is moved vigorously, the projecting portion 19 formed in the area 23 which does not overlap the end face of the magnet 9 collides with the ceiling surface 13 of the cover member 1. The impact due to the collision does not act directly, and the magnet 9 can be prevented from slipping or breaking.

Although the embodiments of the present invention have been described above, the application of the present invention is not limited to these embodiments, and can be variously applied within the scope of the technical idea thereof. For example, in the present embodiment, the magnet 9 is accommodated in the holder 7 and moved so as to displace the relative position to the Hall IC 6 as shown in FIG. Connect the flexible printed wiring board 24 such as FPC to the IC 6 and move the Hall IC 6 for a while.

Brief description of the drawings

FIG. 1 is an exploded perspective view of a switch device according to the present embodiment.

FIG. 2 is a cross-sectional view of the switch device.

[FIG. 3] A sectional view showing a process ((a) to (c)) in which an output signal is switched with the operation of the operation unit. [FIG. 4] A sectional view showing a modification of the switch device,

1 Cover member

2 Operating member

3 Elastic member

4 cap part

5 substrate

6 hole IC

7 Holder member

8 3 3⁄45 panel

9 magnets

10 through holes

11 Housing

12 Guide part

13 ceiling surface

14 Engaging member

15 axial hole

16 terminals

17 slide part

18 side wall

19 projections

20 groove

21 buttocks

22 Overlapping area

23 Non-overlapping area

24 Printed wiring board

Claims

The scope of the claims

[1] A magnet and a magnetoelectric conversion element which are disposed to face each other, an operation member which is displaceable by pressing operation, and a holder member which accommodates the magnet or the magnetoelectric conversion element and which is movable according to the displacement of the operation member. Equipped

In the switch device, the output signal of the magnetoelectric conversion element is switched when the relative position of the magnet to the magnetoelectric conversion element is displaced.

A receiving member is provided in contact with the holder member to stop its movement, and the front surface of the holder member in the moving direction is composed of an area overlapping and not overlapping the end face of the magnet or magnetoelectric conversion element, the area not overlapping And Z or a portion of the receiving member in contact with the protruding portion is formed with a protrusion.

[2] The projection is characterized in that it is formed in an area not overlapping with the end face of the magnet or the magnetoelectric conversion element on both sides in the moving direction of the holder member and in the area of the receiving member which abuts with Z or them. The switch device according to claim 1.

[3] A transmission mechanism for converting the operation force of the operation member to move the holder member in a predetermined direction is provided, and the transmission mechanism reverses the movement force to the holder member when the operation portion is displaced to a predetermined position. The output signal of the magnetoelectric conversion element is switched according to displacement of the relative position of the magnet to the magnetoelectric conversion element before and after the inversion of the inversion panel. Switch device.

[4] The switch device according to claim 3, wherein the reversing panel is bridged between the operation member and the holder member.

[5] The switch device according to claim 4, wherein the reverse panel is a wire rod bent in an S-shape.

[6] The switch device according to claim 5, wherein the holder member is formed with a groove to which the tip of the reversing panel is rotatably attached.

[7] The switch device according to any one of claims 1 to 6, wherein the holder member has a slide portion for being guided in a predetermined direction.

[8] The above magnets are flanked to reduce leakage flux! A switch apparatus according to any one of the preceding claims, characterized in that:

[9] An operation member that is displaceable by pressing operation, a magnet that can move with the displacement of the operation member, and a magnetoelectric conversion element are provided, and the magnet is displaced by being displaced with respect to the magnetoelectric conversion element. In the magnetic switch device where the signal switches,

A transmission mechanism for converting the operation force of the operation member to move the magnet in a predetermined direction is provided, the transmission mechanism includes a reversing panel for reversing the movement force to the magnet, and the operation member is displaced to a predetermined position. A magnetic switch device characterized in that the inversion panel is inverted to switch the output signal.

[10] The magnet is disposed in a holder member, and the reversing panel is a wire rod bent in an S-shape, and is bridged between the operation member and the holder member. The switch device according to claim 9.

11. The switch device according to claim 10, wherein the holder member is formed with a groove to which the tip of the reversing panel is rotatably attached.