JP6076306B2 - Push button switch with reed switch - Google Patents

Description

  The present invention relates to a push button switch, and more particularly, for example, in a vehicle equipped with a semi-automatic vehicle door that allows a passenger himself to open and close the vehicle door, and is preferably used for opening and closing the vehicle door. It is about.

  For vehicles such as trains and diesel trains on routes with few passengers, the vehicle doors remain unnecessarily long when stopped at the station, and in winter, warm air from heating flows out of the vehicle and the temperature inside the vehicle decreases. In the summer, the temperature inside the vehicle during cooling increases. In order to prevent this, there is a vehicle equipped with a semi-automatic vehicle door that allows the passenger himself to open and close the vehicle door.

  In a vehicle having a semi-automatic vehicle door as described above, generally, a push button switch is installed as a switch for opening and closing the vehicle door outside and inside the vehicle.

  A conventional push button switch of this type will be described with reference to FIG. The push button switch includes a case 101, a push button 102, a hook 103 for restricting the push amount of the push button 102, a return spring 104 that constantly biases the push button 102 in a direction opposite to the push direction, and a push button. The cylindrical guide 105 that guides the pushing of the 102, the reed switch 106 provided with a contact for energizing the vehicle door opening / closing mechanism, the magnet 107 for driving the contact of the reed switch 106, and the magnet 107 are press-fitted. A cylindrical cylinder 108.

  The flange 103 is sandwiched between the push button 102 and the cylindrical cylinder 108 and moves together with the push button 102 in a space between the lower surface of the cylindrical guide 105 and the bottom surface of the recess 101a of the case 101. The lower surface of the cylindrical cylinder 108 is urged in the direction of the push button 102 by the return spring 104, and moves along the inner surface of the cylindrical portion 101 b of the case 101 as the push button 102 moves.

  The push button 102 can be pushed in while being guided by the inner surface of the cylindrical guide 105, but the push amount is regulated by the flange 103, and when the push is released, the push button 102 is returned to the original position by the return spring 104. It is. When the push button 102 is pushed and the cylinder 108 is moved, the magnet 107 is also moved in the pushing direction so as to face the reed switch 106.

  The reed switch 106 opens and closes its internal contacts by the action of the magnetic force of the magnet 107 and the release of the action. When the contact of the reed switch 106 is opened and closed, the semi-automatic vehicle door is opened and closed by energizing the door opening and closing mechanism of the vehicle and releasing the energization.

  In such a push button switch, the direction of the magnetic pole axis of the magnet 107 is set to a direction orthogonal to the direction of the electrode axis of the reed switch 6, and the S magnetic pole or the N magnetic pole faces the reed switch 6 side.

  In the push button switch having the above configuration, the use of the reed switch 106 as a contact makes it possible to use a relatively high operating voltage for operating the door drive opening / closing mechanism, and easy installation in a vehicle such as a train. In addition, since the reed switch 106 is located on the side of the displacement path of the push button 102, the overall thickness is within the thickness obtained by adding the displacement stroke to the depth length of the push button 102, and is relatively thin. There are some advantages.

JP 2001-184993 A

  However, the push button switch has the following problems. That is, in the push button switch, the reed switch 106 and the driving magnet 107 of the reed switch 106 are integrally disposed under the push button 102, so that the total thickness of the push button switch in the pushing direction of the push button 102 is is necessary.

  Further, since the moving stroke of the push button 102 is equal to the moving distance of the magnet 107 necessary for driving the reed switch 106, it cannot be reduced.

  Further, in order to facilitate the operation of the push button 102, when the operation area is secured by increasing the diameter of the push button 102, if the operation surface of the push button 102 is pressed with an uneven force, the push button 102 102 is easy to tilt. Such an inclination, combined with the large movement stroke of the push button 102, reduces the operability of the push button 102.

  Therefore, in order to prevent tilting during the operation of the push button 102, in the conventional push button switch, the length of the cylindrical cylinder portions 101b and 108 needs to be a length corresponding to the diameter of the push button 102. .

  For these reasons, the conventional push button switch described above has a limitation in preventing the tilting of the push button 102 during operation and improving its operability, and at the same time reducing its thickness.

  The present invention has been made in view of the above-described problems, and has as its main object to provide a push button switch that can improve the operability of the push button and at the same time make the overall thickness thinner.

(1) A push button switch according to the present invention is a push button switch provided with a push button which is provided so as to be able to appear and retract in an opening at an upper portion of a case, and has the following configuration in order to solve the above-described problem.

That is, in the push button switch of the present invention, the reed switch, the magnet that drives the reed switch on by magnetic force, the magnetic shielding plate that absorbs the magnetic force of the magnet, and the pressed button button are pressed in the case. And a leaf spring that acts to return the push button to its return position by its own restoring force when the push operation is released, and the reed switch is provided on one side of the case. The magnetic shielding plate is fixed to either one of the upper side and the lower side of the case, and the magnetic shielding plate is located on the other side of the upper side and the lower side of the one side side in the case. fixed spaced proximity to the reed switch, the leaf spring, one end of which is fixed to the other side of the case, the other end extending on one side of inside the case, and the pressed portion With the free end to move the downwardly pressed, the magnet on the other end side is provided, are adapted to be pressed by the fulcrum midway position close to said one end than the pressed portion, the magnet Depending on the behavior of the other end of the leaf spring when the push button is pressed, the lead switch is driven on in the vicinity of the reed switch, or the lead switch is detached from the reed switch and at the position separated from the reed switch. A magnetic shielding plate between the switch and the magnetic flux reaching the reed switch is absorbed and reduced .

  The push button switch of the present invention eliminates the need for a conventional cylinder, and the leaf spring has a structure in which one end side is fixed and the portion closer to the one end side than the pressed portion is pushed as a bending start point, so that the other end The side movement becomes larger than the push-button pressing operation amount, and as a result, the operation stroke of the push button is reduced, so that the thickness can be reduced.

  Moreover, in addition to the thinning of the present invention, the push button is difficult to tilt no matter which part is pressed, and the tilt is not perceived by the operator. As a result, the operability can be improved simultaneously with the reduction in thickness.

Further , when the magnet is in a position separated from the reed switch by the operation of the push button, the magnetic force from the magnet is absorbed by the magnetic shielding plate, so that the reed switch can be turned off more reliably.

Further, since the magnetic shield plate and the plate spring is a separate body, the magnetic shielding plate while constituting an iron plate of ferromagnetic material eg any thickness, leaf spring, the use of spring material such as phosphor bronze And the degree of freedom in design is improved.

(2) In another preferred embodiment of the present invention, inside the case, there is a hook that regulates the amount of pressing operation of the push button, and a pressed portion of the leaf spring that is attached to the lower surface of the hook and that pushes the pressing button. And a spring pressing bar for pressing in the direction.

  In this embodiment, since the pressed portion of the leaf spring can be pressed uniformly, the leaf spring does not tilt when the push button is pushed in, and the moving distance downward on the other end side can be made almost constant at all times. The reed switch can be turned on and off more accurately.

(3) As another preferred embodiment of the present invention, by inserting a pin provided in a part of the spring holding bar or a pin provided separately into a hole formed in the leaf spring, the spring holding bar and the leaf spring are Avoid misalignment.

  In this embodiment, the inclination of the push button can be reduced or prevented, and the operability is improved.

(4) As another preferred embodiment of the present invention, one end of the leaf spring is fixed to the leaf spring mounting portion, and the fulcrum portion is supported by the leaf spring support.

  In this embodiment, the leaf spring is supported at the fulcrum portion closer to the one end side than the pressed position by the plate spring support, so that when the pressed position is pressed by the spring pressing bar, the other end side bends downward. . In this case, the downward moving distance on the other end side is increased with respect to the downward moving distance of the pressed portion, and the magnet is moved downward.

  Therefore, the operation stroke of the push button required to turn on the reed switch by the magnetic force of the magnet may be smaller than the moving distance of the magnet, thereby reducing the thickness of the push button switch in the operation direction of the push button. be able to.

(5) As another preferred embodiment of the present invention, a part of the other end side of the leaf spring is a cylindrical body, and the magnet is held in the cylindrical body.

  In this embodiment, the attachment of the magnet is simple, and even if the other end side of the leaf spring moves up and down, the attachment state is stabilized without the possibility of the magnet falling off.

(6) As another preferred embodiment of the present invention, the leaf spring mounting portion has a positioning pin projecting on the leaf spring mounting surface, and the leaf spring is attached to the leaf spring mounting portion on one end side of the leaf spring. A positioning hole is provided at a position where the positioning pin can be inserted in this state, and the positioning pin is fixed to the leaf spring mounting portion by inserting the positioning pin into the positioning hole.

  In this embodiment, since the one end side of the leaf spring is fixed to the leaf spring mounting portion as described above, even if the leaf spring is repeatedly bent many times by the operation of the push button, the strength of the leaf spring is long-term. And the reliability in use of the push button switch is improved.

  According to the push button switch of the present invention, the moving distance of the magnet attached to the tip of the leaf spring is greatly expanded than the moving stroke of the push button, and the push button, the reed switch, and the magnet are arranged side by side. Therefore, the entire push button switch can be reduced in thickness.

  Further, in the present invention, since the relative position between the push button and the leaf spring is determined by inserting a pin provided on the push button into the hole of the leaf spring, the push button is operated when the push button is operated to turn on and off the reed switch. In addition, depending on the operation part of the push button, even if the push button is tilted, the tilt is very small, and the operability is improved as the thickness is reduced.

It is a principle outline side view of a pushbutton switch concerning Embodiment 1 of the present invention, (a) shows a pushbutton return state, and (b) shows a pushbutton pushing state. FIG. 2 is a plan view of the principle operation mechanism of FIG. 1. It is a principle schematic side view structural drawing of the pushbutton switch which concerns on Embodiment 2 of this invention, and the internal contact of a reed switch comprises b contact. It is a schematic side sectional view of a push button switch of a conventional example.

  Hereinafter, a push button switch according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

(Embodiment 1)
With reference to FIG. 1 and FIG. 2, the pushbutton switch which concerns on Embodiment 1 is demonstrated. 1A and 1B are schematic side view of the principle of the push button switch according to the first embodiment. FIG. 1A shows a return state of the push button, and FIG. 1B shows a push state of the push button. FIG. 2 is a plan view of the principle operation mechanism of FIG. The push button switch according to the first embodiment is provided in a vehicle including a semi-automatic vehicle door that allows passengers to open and close the vehicle door.

  In addition, since the pushbutton switch of Embodiment 1 is arrange | positioned inside and outside the vehicle door near a vehicle door, and is operated by the passenger, the up-down direction in a figure is a horizontal direction, a left-right direction when arrange | positioning in a vehicle Is the vertical direction, but the present invention is not limited to the following vertical and horizontal directions.

  The push button switch of the present invention is not limited to being applied to a vehicle equipped with a semi-automatic vehicle door, and can of course be implemented appropriately according to its use.

  The push button switch of the first embodiment includes a case 1.

  The case 1 is configured in a box shape with an upper part 1a and a lower part 1b, which are rectangular in plan view of the same size, and four side parts 1c. In the present invention, the shape of the case 1 is not limited to this box shape, but may be a cylindrical shape or other shapes.

  An opening 1 d is formed in a rectangular shape in plan view on the right side of the upper portion 1 a of the case 1. A push button 2 is provided in the opening 1d so as to be able to appear and disappear.

  The push button 2 has a plan view shape that substantially matches the plan view shape of the opening 1d of the case 1, and its upper surface serves as an operation surface.

  The push button 2 is thicker than the thickness of the upper part 1a of the case 1, and the operation surface of the push button 2 slightly protrudes outward from the opening 1d in the return state of FIG. Yes.

  In FIG. 2, for the sake of illustration, the push button 2 and the later-described rod 3 have their outer shapes in plan view indicated by virtual lines. In FIG. 2, the push button 2 and the heel 3 are drawn in a rectangular shape in plan view, but are not limited to this shape, and may be in a circular shape in plan view or other shapes in plan view.

  The internal configuration of the case 1 will be described below. The flange 3 is directly connected to the lower surface of the push button 2. The flange 3 has a rectangular shape in plan view that is larger in size in plan view than the opening 1 d of the case 1. The flange 3 is provided on the lower surface side so that the outer peripheral portion including the four corners of the rectangular shape in plan view is located on the lower surface around the opening 1 d of the case 1.

  The push button 2 is urged toward the upper return position by the leaf spring 4 together with the flange 3. When the push button 2 is not pushed, the flange 3 is urged upward by the restoring force of the leaf spring 4, and the inner surface thereof as shown in FIG. Abut.

  On the lower surface of the flange 3, there is a spring pressing bar 31 that extends slightly to the right of the central portion in the left and right direction in FIGS. 1 and 2 on the lower surface, extends in the direction perpendicular to the paper surface in FIG. 1, and extends downward in FIG. Is formed.

  The spring pressing bar 31 protrudes downward at a uniform bar height in the vertical direction and is in contact with the leaf spring 4. Positioning pins 32a and 32b project from the spring holding bar 31 at two locations shown in FIG.

  The push button 2 is pushed in from the return position of FIG. 1A in the direction of the arrow shown in FIG. 1B, and when the positioning pins 32a and 32b of the spring holding bar 31 abut against the push stopper 13, the push button 2 It is not pushed in any more. Thereby, the movement range in the push-in direction of the push button 2 is regulated.

  The leaf spring 4 is made of a spring material such as phosphor bronze and is formed in a rectangular plate shape in a plan view of FIG. The leaf spring 4 has a pressed portion 42d to be pressed by the spring pressing bar 31 at substantially the center of the left and right ends shown in FIG. 2, and a midway portion on the right side of the pressed portion 42d in the drawing serves as a fulcrum portion 42c. The leaf spring 4 is supported by the leaf spring support 12 at this fulcrum portion 42c. The leaf spring support 12 is provided on the inner surface of the lower portion 1 b of the case 1 of the leaf spring 4.

  A leaf spring mounting portion 11 is provided on the inner surface of the right side surface 1 c of the case 1. The lower surface of the leaf spring attachment portion 11 is a leaf spring attachment surface, and positioning pins 11a and 11b for positioning one end side of the leaf spring 4 are formed on the leaf spring attachment surface. The lower surface of the leaf spring attachment portion 11 is an inclined leaf spring attachment surface. Since the lower surface of the leaf spring mounting portion is inclined, the elasticity of the leaf spring 4 can be used when the push button 2 is pushed up in the return direction.

  One end of the leaf spring 4 is a base end portion 42a, and positioning holes 41a and 41b are formed in the base end portion 42a. The positioning pins 11a and 11b of the leaf spring mounting portion 11 are fitted into the positioning holes 41a and 41b. Accordingly, the leaf spring 4 is attached to the inclined leaf spring attachment surface of the leaf spring attachment portion 11.

  When the pressed portion 42d is pressed by the spring pressing bar 31, the leaf spring 4 can be bent downward with a fulcrum portion 42c closer to one end side than the pressed portion 42d as a bending start point. The distance that the pressed portion 42d of the leaf spring 4 moves downward when the pressed portion is pressed downward by the push button 2 corresponds to the distance that the push button 2 moves downward (the operation stroke of the push button 2). To do.

  When the pressed portion 42d moves downward, the other end side of the leaf spring 4 becomes a free end and moves downward. The other end side of the leaf spring 4 has a tip end portion 42b whose cylindrical protruding portion is rounded into a cylindrical shape.

  A cylindrical magnet 5 is held at the tip 42b. The magnet 5 is not limited to a cylindrical shape, and may be a flat plate shape, and the tip end portion 42b may be a cylindrical body that matches the shape of the magnet 5.

  When the push button 2 is pushed and the leaf spring 4 bends downward, the magnet 5 moves downward and approaches the reed switch 6 as shown in FIG. When the magnet 5 comes close to the reed switch 6, the magnetic force of the magnet 5 reaches the reed switch 6, and the reed switch 6 is driven on.

  When the push-in operation of the push button 2 is released, the push button 2 is urged upward by the leaf spring 4 to return to the return position of FIG. 1A and the magnet 5 is detached from the reed switch 6. The magnetic force does not reach the reed switch 6 and the reed switch 6 is turned off.

  In the first embodiment, a magnetic shielding plate 7 that absorbs the magnetic force of the magnet 5 is provided on the inner surface side of the upper portion 1 a of the case 1 in order to ensure that the reed switch 6 is turned on and off by the magnetic force of the magnet 5.

  The magnetic shielding plate 7 is made of a ferromagnetic material such as an iron plate, has a rectangular plate shape extending vertically in FIG. 1 and extending vertically in FIG. 2, and the vertical length is equal to or greater than the length of the reed switch 6. is there. The magnet 5 faces the magnetic shielding plate 7 at a position separated from the reed switch 6 in the upper position. With this facing, the magnetic force of the magnet 5 is absorbed by the magnetic shielding plate 7, and the reed switch 6 can be reliably turned off.

  Further, the magnetic shielding plate 7 is fixed at a position close to the magnet 5 and can use a member having a large magnetic force absorption action, for example, an iron plate having a large thickness.

  Since the leaf spring 4 is supported by the leaf spring support 12 at a fulcrum portion 42c close to the base end side 42a, when the pressed portion 42d is pushed by the spring holding bar 31, the fulcrum portion 42c is used as a deflection starting point in the drawing. The left end portion 42b bends downward. In this case, the downward movement distance of the magnet 5 is increased with respect to the downward movement distance of the pressed location 42d.

  Therefore, the operation stroke of the push button 2 required for turning on the reed switch 6 is smaller than the moving distance of the magnet 5, thereby reducing the thickness of the push button switch in the operation direction of the push button 2. be able to.

  When the push button 2 is pushed in, as shown in FIG. 1B, the magnet 5 at the tip end portion 42b of the leaf spring 4 moves downward and approaches the reed switch 6 so as to face each other. When the push-in operation of the push button 2 is released, the push button 2 is returned by the restoring force of the leaf spring 4 as shown in FIG. 1A, and the magnet 5 is detached from the reed switch 6 and approaches the magnetic shielding plate 7. To do. In this case, when the leaf spring 4 is restored from the bent state of FIG. 1B to the position shown in FIG. 1A by its restoring force, the attractive force acting on the magnet 5 from the magnetic shielding plate 7 is restored to the leaf spring 4. Since the force is added to the force, the leaf spring 4 can be easily restored.

  The two positioning pins 32a and 32b on the lower surface of the spring pressing bar 31 enter the positioning holes 43a and 43b of the leaf spring, respectively. Thereby, when the push button 2 is pushed in, the positioning pins 32a and 32b do not move back and forth and from side to side, so that the push button 2 does not tilt.

  The hole of the leaf spring 4 into which the positioning pins 32a and 32b enter is suitable for the hole having the same shape as the cross-sectional shape of the positioning pins 32a and 32b, and can effectively prevent the push button 2 from being inclined when the push button 2 is pushed. . In the first embodiment, there are two positioning holes 43a and 43b, but the number can be increased as necessary.

  A reed switch 6 is fixed to the lower left side inside the case 1. The direction of the magnetic pole axis of the magnet 5 (the axis connecting the N magnetic pole and the S magnetic pole) is parallel to the direction of the electrode axis of the reed switch 6. In this case, the magnetic pole of the magnet 5 may be either.

  In the first embodiment, the operation surface of the push button 2 is flat, which is good for making the push button switch thin. However, the push button 2 does not necessarily have to be flat. Good. If it carries out like this, the center of the push button 2 becomes easy to be pushed by a passenger's finger, the push button 2 does not tilt, and the operativity of the push button 2 improves more.

  As described above, in the first embodiment, the push button 2, the reed switch 6, and the magnet 5 are arranged side by side, and the moving distance of the magnet 5 at the distal end portion 4 b of the leaf spring 4 is the same as that of the push button 2. The operation stroke is enlarged, and the operation stroke of the push button 2 can be reduced. As a result, the push button switch of the first embodiment can be easily reduced in thickness.

In the first embodiment, the plate spring 4 is pushed downward by the spring pressing bar 31 to move the tip end portion 42b of the plate spring 4 downward. The leaf spring 4 may be moved downward using a part or a part of the push button 2.

(Embodiment 2)
FIG. 3 is a schematic side view of the principle of a push button switch according to Embodiment 2 of the present invention. In FIG. 3, the shape of the leaf spring 4 is indicated by a solid line when the push button 2 is in the return position, and is indicated by a dotted line when the push button 2 is in the push position.

  In the push button switch of the first embodiment, the reed switch 6 is turned on by the pushing operation of the push button 2, and the internal contact is a contact.

  On the other hand, in the second embodiment, the vertical positional relationship between the reed switch 6 and the magnetic shielding plate 7 in the first embodiment is exchanged, and the positional relationship with the magnet 5 is against the push of the push button and the return. This is the reverse of the first embodiment. The reed switch 6 is turned on when the push button 2 is returned and turned off when the push button 2 is pushed. That is, the push button switch of the second embodiment is characterized in that the internal contact of the reed switch 6 is a b contact.

  Thus, in the present invention, the voltage / current rating for operating the door opening / closing mechanism can be increased by using the reed switch, and the conventional cylinder is unnecessary, so that the conventional push button switch can be used. A thin push button switch can be realized.

  The present invention is not limited to the above embodiments, and can be implemented in various other forms without departing from the spirit or main features thereof. Therefore, the above-described embodiment is merely an example in all respects, and the scope of the present invention is shown in the claims, and is not restricted by the text of the specification. Further, all modifications and changes belonging to the scope of the claims are within the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Case 1d Opening part of case 1 11 Leaf spring attachment part 11a, 11b Positioning pin of leaf spring 12 Leaf spring support stand 13 Push stopper 14 Return stopper 2 Push button 3 ３１ 31 Spring holding bar 32a, 32b Positioning pin 4 Leaf spring 41a 41b Positioning hole of the leaf spring 42a One end side (base end portion) of the leaf spring
42b The other end of the leaf spring (tip)
42c Middle part of leaf spring (fulcrum)
42d Pressed portion of leaf spring 43a, 43b Positioning hole of spring holding bar 31 5 Magnet 6 Reed switch 7 Magnetic shielding plate

Claims (6)

A push button switch having a push button provided in a freely opening and retracting manner in an opening at the top of the case,
In the case,
A reed switch,
A magnet that drives the reed switch on by magnetic force;
A magnetic shielding plate that absorbs the magnetic force of the magnet;
A leaf spring that acts to bend when the pressed portion is pressed by the push operation of the push button, and to return the push button to its return position by its own restoring force when the push operation is released;
Comprising at least
The reed switch is fixedly disposed on either one of the upper and lower portions on one side in the case,
The magnetic shielding plate is fixedly disposed adjacent to the reed switch with respect to the one side surface on the other side of the upper and lower portions of the one side surface in the case,
The leaf spring is fixed to the other side of the one end said casing, extending in the one side surface of the other end said case, and said free end moves downward when pressed portion is pressed And the magnet is provided on the other end side, and it is adapted to be pressed with a midpoint closer to the one end side than the pressed location as a fulcrum,
The magnet, by the behavior of the other end of the plate spring by pushing operation of the push button, together with the adjacent reed switches to drive the reed switch is on, or detached from the reed switch, the A push button switch characterized in that the magnetic shield reaching the reed switch is absorbed and reduced by the magnetic shielding plate between the reed switch at a position separated from the reed switch. Inside the case,
鍔 that regulates the amount of pushing operation of the push button,
A spring pressing bar that is attached to the lower surface of the flange and presses the pressed portion of the leaf spring in the direction of the pressing operation of the push button;
The push button switch according to claim 1 . A pin is provided on a part of the spring holding bar,
A hole into which the pin is inserted is formed in a part of the leaf spring,
The pin is inserted into the hole of the leaf spring;
Even if the plate spring is pressed by the spring pressing bar, the relative position between the spring pressing bar and the plate spring is prevented from shifting.
The push button switch according to claim 2 . The leaf spring has one end fixed to the leaf spring mounting portion, and the fulcrum portion supported by the leaf spring support.
The push button switch according to claim 2 or 3 , characterized in that. A part of the other end side of the leaf spring is a cylindrical body,
The magnet is held in the cylindrical body,
The push button switch according to any one of claims 1 to 4 , wherein the push button switch is provided. The leaf spring mounting portion has a positioning pin protruding from the leaf spring mounting surface,
The one end side of the leaf spring is provided with a positioning hole at a position where the positioning pin can be inserted in a state where the leaf spring is attached to the leaf spring mounting portion.
The leaf spring has the positioning pin inserted into the positioning hole and is fixed to the leaf spring mounting portion.
The push button switch according to claim 4 .

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