JP3109938U - Foot switch - Google Patents

Abstract

【Task】
The foot switch is pressed to input the micro switch. However, if an excessive load is applied by the foot, the foot switch may be broken or trouble may occur.
[Solution]
A dish-shaped body 1, a spring receiving member 2, a main coil spring 3, a cam member 4 having a cam member base portion 4a, a cam portion 4b, and a cam side operation portion 4c, a micro switch button 5b, and a plate spring operation Formed are a micro switch 5 having a protruding portion 5a and a connection terminal 5c, a wiring cord 6, a cam button 7 having a button side cam portion 7a and a stopper 7b, a stopper receiving portion 8c, a cylindrical portion 8a and a flange portion 8b. Cam cover 8, auxiliary coil spring 9, annular rib 10a. 10b. The foot button 10 is provided with a projecting annular rib 10c, a retaining projection 10d, and a cap 11 that opens the opening 11a and is attached to the body 1.
[Selection]
FIG.

Description

  The present invention relates to a foot switch. More specifically, the present invention is placed on a floor surface or a flat place, or fixed to a side wall or the like, and the power source of an electric device connected to the tip of a cord is viewed from above. Alternatively, the present invention relates to a foot switch that is turned on / off by pressing or releasing from the lateral direction.

  Conventionally, various foot switches of this type have been developed and are used as switches for electrical machines such as sewing machines, medical devices, machine tools, and public toilet doors that repeatedly stop moving in a short time. In most cases, the microswitch is turned on and off by pivoting a movable part pressed by a foot and a fixed base, and a delicate sense is required to judge whether the on / off is on or off.

Therefore, as a push button type disclosed above, a base, a microswitch installed on the base, and the button when the button is installed above the microswitch and pushed down A switch pressing member having a protrusion for operating the switch, an urging means for urging the switch pressing member in a direction to retract from the button of the microswitch, and the cover member and the switch pressing member are engaged with each other. As a push button switch, a step part is provided on one side of the flange part, and a non-contact part between the back side of the front panel of the case. As a push button switch using a cam (see Patent Document 2) or tilted forward at the time of insertion, it can be rotated by a rotating ring between the push button switch and both switch plungers. In addition, a rotation cam that can be pressed and moved in the switch operation direction by a push button is provided, and each switch plunger is returned and urged by a spring to be in contact with and supported by the rotation cam (Patent Document 3). Reference) and the like.
Japanese Utility Model Publication No. 63-32418 Japanese Patent Laid-Open No. 7-262871 Japanese Patent No. 2847950

  However, the base disclosed above, a micro switch installed on the base, and a switch having a protrusion for operating the button when the micro switch is installed and pushed down above the button of the micro switch. A pressing member, a biasing unit that biases the switch pressing member in a direction of retracting from the button of the micro switch, and an engagement unit that engages the cover member and the switch pressing member and prevents a deviation between them. With this type of foot switch, an excessive load is applied because this type of foot switch is pressed with the foot, and the micro switch is input with a slight load. Although the switch is a switch, the above-described structure is simple, but there is a possibility that trouble may occur in use over time.

  Furthermore, as a push button switch, a stepped part is provided on one side of the flange part, a non-contact part is formed between the case and the back side of the front panel of the case. However, there was a possibility of destruction when an excessive load such as a foot was applied.

  Furthermore, as a push button switch using a cam, a rotating cam that can be rotated by a rotating ring and can be pressed and moved in the switch operating direction by a push button between the push button switch and both switch plungers. In addition, the switch plunger is configured to be urged and returned by a spring to be in contact with and supported by the rotating cam, which is also input to the micro switch. If an excessive load is applied, trouble may occur. It is what is done.

  In the foot switch of the present invention, in view of the above-mentioned problems, as a result of earnest study, the body, a spring receiving member incorporated into the bottom surface of the body, a spring receiving rib erected on the spring receiving member, and an outer periphery of the spring receiving rib A main coil spring that is attached to give elasticity in the upward direction, a cam member having a cam member base that is rotatably fitted to the main coil spring, a cam portion formed on the cam member, and a body of the cam portion A plurality of cam-side operation parts bulged around the periphery, a plate-like spring operation part that can come into contact with the cam-side operation part, a micro switch button that can be pressed by the plate-like spring operation part, a micro switch button and a plate-like spring operation A microswitch that protrudes and is fixed, a wiring cord that is connected to a pair of connection terminals of the microswitch and extends outward from the body, and a button that meshes with the cam portion A cam cover with a cam button formed with a side cam part, a stopper bulged on the button side cam part of the cam button, and a stopper receiving part through which the stopper is inserted, and a cylindrical part and a collar part through which the cam button penetrates An auxiliary coil spring mounted on the upper side of the collar, a first annular rib for mounting the auxiliary coil spring, a second annular rib, and a foot button projecting from the third annular rib; And a cap that is attached to the body by opening an opening that allows the retaining protrusion to contact and slidably penetrate downward, and to connect the microswitch. A lead wire is connected to the terminal, an indicator lamp is connected to the lead wire, and a window portion through which the indicator lamp can be seen is provided on the cap.

  The foot switch of the present invention can be used in a place where it is pressed by hand with a push button type foot switch. Further, since the spring receiving member is incorporated in the body and the rotating cam means is assembled, the foot switch can be used. There is no trouble because the pressing load is not directly applied to the bottom of the body, and the robustness, accuracy and feeling of operation are good, and the reliability is improved.

  The present invention relates to a foot switch. More specifically, the present invention is placed on a floor surface or a flat place, or fixed to a side wall or the like, and the power source of an electric device connected to the tip of a cord is viewed from above. Alternatively, it relates to a foot switch that is turned on / off by pressing or releasing from the lateral direction, and the foot switch according to claim 1 includes a dish-shaped body 1 and a spring receiving member 2 that is incorporated at substantially the center of the bottom surface of the body 1. A short columnar spring receiving rib 1a erected on the spring receiving member 2, a main coil spring 3 that projects upward and is attached to the outer periphery of the spring receiving rib 1a to give elasticity upward, A cam member 4 having a cup-shaped cam member base portion 4a rotatably fitted above the main coil spring 3 and an upward saw blade shape on the outer peripheral edge of the cam member 4 are formed. A cam portion 4b, a cam-side operation portion 4c bulged into a plurality of chevron shapes around the base end side of the cam portion 4b, and a plate-like spring operation portion 5a that can come into contact with the cam-side operation portion 4c. A micro switch button 5b that can be pressed by the plate spring operating portion 5a, a micro switch 5 that projects and fixes the micro switch button 5b and the plate spring operating portion 5a, and a pair of the micro switch 5 A wiring cord 6 connected to the connection terminal 5c and extending outward from the body 1, a cup-like cam button 7 having a button-side cam portion 7a meshing with the cam portion 3b formed in a downward saw blade shape, A plurality of stoppers 7b for preventing rotation and retaining from the outer periphery of the button side cam portion 7a of the cam button 7 and a stopper receiving portion 8c through which the stopper 7b is inserted are engraved on the inner periphery and the cam A cam cover 8 having a cylindrical portion 8a through which the tongue 7 is slidably penetrated and a flat flange portion 8b; an auxiliary coil spring 9 mounted on the upper side of the flange portion 8b so as to give elasticity upward; A first annular rib 10a for mounting the upper end of the auxiliary coil spring 9, a second annular rib 10b that contacts the top of the cylindrical portion 8a of the cam cover 8, and a third annular rib 10c that presses the top of the cam button 7. A dome-shaped foot button 10 projecting from the lower surface, a retaining protrusion 10d bulging on the outer periphery of the foot button 10, and the retaining protrusion 10d abuts on the inner peripheral edge portion so as to be slidable downward. The cap 11 is provided with the opening 11a to be opened substantially in the center and to be attached to the body 1.

  Furthermore, the foot switch according to claim 2 is the foot switch according to claim 1, wherein one end of the lead wire 12 is connected to the pair of connection terminals 5c of the micro switch 5, and the other end of the lead wire 12 is connected to the indicator lamp. 13, and a window portion 13 a through which the indicator lamp 13 can be seen from the outside is provided in the cap 11.

  Hereinafter, an embodiment of the foot switch of the present invention will be described in detail with reference to the drawings. FIG. 1 is an exploded perspective view for explaining an embodiment of the foot switch of the present invention, and FIG. 2 is a foot switch of the present invention. FIG. 3 is a plan view with a cap removed for explaining an embodiment of the foot switch of the present invention.

  That is, the body 1 of the foot switch of the present invention is formed of a dish-like synthetic resin having a slightly wide side wall and an elliptical bottom surface as shown in the figure. 8 is fixed and a cam cover 8 for attaching the microswitch 5 is fixed, and a wiring cord 6 connected to the pair of connection terminals 5c of the microswitch 5 is extended from the side wall to the outside to be used as an electric device. In addition to being connected, a foot button 10 and a cap 11 described later are attached to the upper surface.

  Next, the spring receiving member 2 is assembled in a substantially center of the bottom surface of the body 1 by a fixed rib or the like standing upright, and a short cylindrical spring receiving rib 2a is erected at the substantially center. The main coil spring 3 to be described later is attached to the periphery of the trunk.

  Next, the main coil spring 3 is made of metal, and the lower part is attached to a short cylindrical spring receiving rib 2a erected on the spring receiving member 2, and the upper part protrudes above the spring receiving rib 2a. It is inserted through a cup-shaped cam member base 4a of the cam member 4 to be described later, and continuously gives elasticity upward.

  Further, the cam member 4 includes a cup-shaped cam member base portion 4a, a cam portion 4b, which will be described later, and a cam side operation portion 4c. The cam member base portion 4a is rotatably inserted above the main coil spring 3. Is.

  Furthermore, the cam portion 4b is formed in a plurality of upward saw blade shapes on the outer periphery of the cup-shaped cam member base portion 4a of the cam member 4, and in the embodiment, it is formed in eight mountain shapes. And repeatedly engages and disengages with a button side cam portion 7a of the cam button 7 described later.

  Further, the cam side operation portion 4c is bulged in a mountain shape with a plurality of tops rounded around the trunk circumference on the proximal end side of the cam portion 4b, and in the embodiment, is bulged radially at four locations. Thus, the plate-like spring operating portion 5a protruding to the microswitch 5 described later is pressed by turning.

  Next, the plate-like spring operating part 5a is provided so as to be pivotable on a general-purpose microswitch 5, and the cam side operating part 4c is pivoted by being pushed outward by turning. The micro switch button 5b to be pressed is pressed inside.

  Next, the micro switch button 5b is a push-type button that protrudes and protrudes from the micro switch 5, and the micro switch 5 is turned on when pressed and turned off when opened. The switch is turned on when pressed once, and turned off when pressed again. The setting is arbitrary, and the micro switch button 5b protrudes at a position where it can be pressed by the plate spring operating portion 5a. It is.

  That is, the microswitch 5 may be a general-purpose one, and is provided with a microswitch button 5b, a plate spring operating portion 5a, and a pair of connection terminals 5c to be described later, which are fixed to a cam cover 8 to be described later with screws. Thus, the switch is used to turn on / off the power supply of the electrical equipment connected to the wiring cord 6 to be described later.

  One end of each of the wiring cords 6 is connected to a pair of connection terminals 5c of the microswitch 5, and the other end is connected to each electric device to be used. The wiring cord 6 is a side wall of the body 1. Wiring on the inside of both sides, attaching cord armor on one side and extending outside.

  Next, the cam button 7 is cup-shaped, and a button-side cam portion 7a that meshes with the cam portion 4b is formed downward in the opening portion 11a. A cam cover, which will be described later, is provided on the outer periphery of the button-side cam portion 7a. A plurality of stoppers 7b are bulged so as to restrict sliding with respect to 8 and prevent rotation, and a cam member base portion 4a of the cam member 4 is slidably inserted inside, and a cylinder of the cam cover 8 described later is inserted. The portion 8a is slidably inserted.

  Further, the cam cover 8 is formed by integrally forming a flat flange portion 8b and a cylindrical portion 8a erected from the flange portion 8b with a synthetic resin, and will be described later on the upper surface of the flange portion 8b outside the cylindrical portion 8a. The auxiliary coil spring 9 is mounted, and the cam button 7 is slidably penetrated inside the cylindrical portion 8a. Further, the micro switch 5 is fixed to the lower surface of the flange portion 8b, and the cam cover 8 has the flange portion 8b. It is fixed to the body 1 with screws.

  Next, the auxiliary coil spring 9 is made of metal and is mounted on the upper surface of the flange portion 8b outside the cylindrical portion 8a. The upper portion is in contact with a foot button 10 which will be described later, so that the foot button 10 is always in the cap 11. The upper part is given elasticity so as to come into contact with.

  The foot button 10 is substantially dome-shaped and has three annular ribs formed on the lower surface. The upper end of the auxiliary coil spring 9 is inserted into the outer periphery of the outer first annular rib 10a, and the intermediate second The annular rib 10b contacts the top of the cylindrical portion 8a of the cam cover 8 to stop the sliding of the foot button 10, and the inner third annular rib 10c presses the top of the cam button 7, On the outer peripheral edge of the button 10, an opening 11a of a cap 11, which will be described later, is inserted, and retaining protrusions 10d that prevent upward dropping are bulged at a plurality of locations.

  Further, the cap 11 is attached to the body 1 and fixed with a screw. An opening is provided at one end of the cap 11 and a cord armor for extending the wiring cord 6 is inserted therethrough. 11a is opened and the foot button 10 is slidably penetrated downward.

  Further, the indicator lamp 13 is fixed to the cam cover 8 with a neon bulb or LED, and is connected to the pair of connection terminals 5c of the microswitch 5 by the lead wire 12, and displays on / off of the microswitch 5 by blinking. In addition, a window 13a is formed on the foot button 10 to attach a transparent member or a semi-transparent member so that blinking can be visually observed from the outside.

  In other words, the foot switch of the present invention is provided in the spring receiving member 2 by first incorporating both ends of the U-shaped spring receiving member 2 upward between the fixing ribs erected on the bottom of the body 1. A short cylindrical spring receiving rib 2a is attached to the lower portion of the main coil spring 3, and the upper portion of the main coil spring 3 is rotatably inserted into the cam member base 4a of the cam member 4 so that the cam of the cam member 4 The cam button 7 is inserted through the member base 4a.

  Then, the micro switch 5 is fixed to the back side of the flange 8b of the cam cover 8 with screws, and the pair of connection terminals 5c of the micro switch 5 and the wiring cord 6 are electrically connected by means such as soldering, and an indicator lamp 13 is connected to the lead wire 12, and the indicator lamp 13 is provided with an attachment portion on the upper surface of the flange portion 8b of the cam cover 8 and electrically connected through the lead wire 12.

  Next, the cam button 7 is slidably passed through the cylindrical portion 8 a of the cam cover 8, the flange portion 8 b of the cam cover 8 is fixed to the body 1 with screws, and the foot button 10 is further lowered to the opening portion 11 a of the cap 11. The auxiliary coil spring 9 is interposed between the flange 8b of the cam cover 8 and the cap 11, and is attached to the body 1 and fixed with screws.

  In the foot switch of the present invention assembled as described above, the cap 11 slides downward against the elasticity of the auxiliary coil spring 9 by pressing the foot button 10 with the foot, and the cap 11 slides. Accordingly, the cam button 7 is also slid downward by being pressed by the third annular rib 10c. At this time, the button side cam portion 7a formed on the cam button 7 meshes with the cam portion 4b of the cam member 4, and the second The annular rib 10b comes into contact with the top of the cylindrical portion 8a of the cam cover 8 and stops sliding.

  At this time, the crests and troughs of the button side cam portion 7a and the cam portion 4b are shifted, and the cam side operation portion 4c rotated and bulged by engaging the cam side operation portion 4c is a plate spring of the micro switch 5. The operation part 5a is pressed, and this pressing causes the plate-like spring operation part 5a to pivot against the elasticity to press the micro switch button 5b, so that the micro switch 5 is turned on. The cam member 4 is rotated 45 degrees.

  When the foot is removed from the cap 11, the cap 11 is lifted by the elasticity of the auxiliary coil spring 9, and the cam member 4 and the cam button 7 are lifted by the elasticity of the main coil spring 3. At this time, the button side cam portion 7a is lifted. And the cam portion 4b are released, and the plate spring operating portion 5a is elastically returned to its original position by opening, so that the micro switch button 5b is released and the micro switch 5 is released. At the same time, the cam-side operation portion 4c is pressed by the elasticity of the plate-like spring operation portion 5a to rotate the cam member 4 to repeat the release in preparation for the next press. The cam member 4 is rotated 45 degrees.

  The foot switch of the present invention is used for home use and business use, such as a sewing machine, medical device, machine tool, open / close door of a public toilet, etc. that repeatedly stops moving when pressed with a foot or hand. It is used as a switch for electrical equipment.

FIG. 1 is a schematic plan view for explaining an embodiment of the foot switch of the present invention. FIG. 2 is a schematic bottom view for explaining an embodiment of the foot switch of the present invention. FIG. 3 is a sectional view of an essential part for explaining an embodiment of the foot switch of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Body 2 Spring receiving member 2a Spring receiving rib 3 Main coil spring 4 Cam member 4a Cam member base part 4b Cam part 4c Cam side operation part 5 Micro switch 5a Plate-like spring operation part 5b Micro switch button 5c Connection terminal 6 Wiring cord 7 Cam button 7a Button side cam portion 7b Stopper 8 Cam cover 8a Cylindrical portion 8b Hook portion 8c Stopper receiving portion 9 Auxiliary coil spring 10 Foot button 10a First annular rib 10b Second annular rib 10c Third annular rib 10d Retaining projection 11 Cap 11a Opening 12 Lead wire 13 Indicator lamp 13a Window

Claims (2)

  A dish-shaped body, a spring receiving member incorporated in the substantially center of the bottom surface of the body, a short cylindrical spring receiving rib erected on the spring receiving member, and an upper portion projecting upward from the outer periphery of the spring receiving rib A main coil spring that is attached and gives elasticity in the upward direction; a cam member having a cup-shaped cam member base that is rotatably fitted above the main coil spring; and an outer peripheral edge of the cam member A cam portion formed in an upward saw blade shape, a cam side operation portion bulged into a plurality of chevron shapes around the base end side of the cam portion, and a plate spring that can contact the cam side operation portion An operation unit, a micro switch button that can be pressed by the plate spring operation unit, a micro switch that protrudes and fixes the micro switch button and the plate spring operation unit, and a pair of connection terminals of the micro switch Close to A wiring cord extending outward from the body, a cup-shaped cam button in which a button-side cam portion meshing with the cam portion is formed in a downward saw blade shape, and a plurality of bulges on the outer periphery of the button-side cam portion of the cam button. A stopper for preventing rotation and retaining, and a stopper receiving part through which the stopper is inserted are engraved on the inner periphery, and a cylindrical part and a flat collar part through which the cam button is slidably formed are formed. A cam cover, an auxiliary coil spring mounted on the upper side of the flange so as to give elasticity upward, a first annular rib for mounting the upper end of the auxiliary coil spring, and a top of the cylindrical portion of the cam cover. A dome-like foot button projecting on the lower surface of the second annular rib and a third annular rib that presses the top of the cam button, and a retaining protrusion bulging on the outer periphery of the foot button; Foot switch, characterized in that it comprises a cap 該抜 only in substantially the center is opened an opening for slidably through the inner peripheral edge portion in contact under direction stopper projection coalesced with the body, the.   One end of each lead wire is connected to each of the pair of connection terminals of the microswitch, and an indicator lamp that displays on / off is connected to the other end of each lead wire, and a window portion through which the indicator lamp can be viewed from the outside is connected to the cap. The foot switch according to claim 1, wherein the foot switch is provided on the foot switch.

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