JP2006114238A - Electric equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a switch unit in which contact lifetime can be secured. <P>SOLUTION: A plurality of jumper wires 41 are arranged nearly in parallel in longitudinal direction of a hand control part between a front face and a rear face of a circuit board 31 provided at the hand control part of a vacuum cleaner of a longitudinal shape with a grip portion and a switch element 43 is integrally constructed. Since the longitudinal direction of the hand control part which is the operation direction of the hand control part and the jumper wires 41 are arranged nearly in parallel, the movable contact 53 hardly rubs against the jumper wires 41, and the silver paste forming the movable contact 53 is hardly separated, thereby, contact lifetime can be secured. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an electric device provided with a fixed contact integrally formed by a conductive wire disposed between a front surface and a back surface of a substrate.

2. Description of the Related Art Conventionally, for example, an electric device provided in a grip portion of a hand operation unit that operates an electric blower of a vacuum cleaner includes a longitudinal substrate along the longitudinal direction of the hand operation unit. On this substrate, a conductive line, that is, a jumper line, is disposed along the width direction between the front surface and the back surface to constitute a plurality of fixed contacts in the longitudinal direction. Further, a contact plate provided with a plurality of hollow hemispherical bulging portions in the longitudinal direction having movable contacts on the inner surface for opening and closing the fixed contacts is provided on the surface side of the substrate. Furthermore, an electric element that is electrically connected to the fixed contact by a jumper wire is provided on the back surface side of the substrate by pushing and deforming the bulging portion. In this electrical device, when the operator pushes and deforms the bulging portion, the movable contact contacts the fixed contact, current flows through the fixed contact, current is supplied to the electric blower, and the electric blower is driven ( For example, see Patent Document 1.)
Japanese Patent Laying-Open No. 2003-197057 (page 2-3, FIG. 3)

  In an electric vacuum cleaner, in general, an electric device is operated while grasping a grip portion. Therefore, an operation load is larger than when an electric device provided in a stationary device is operated, and an operator strongly presses the bulging portion. .

  However, in the above-described electrical apparatus, the jumper wire is provided along the width direction of the substrate that is substantially orthogonal to the longitudinal direction, which is the operation direction of the hand operation unit, so that the fixed contact is configured. If the thumb is repeatedly moved back and forth along the longitudinal direction of the gripping portion and the bulging portion is repeatedly pressed, the movable contact is rubbed by the jumper wire and gradually becomes non-functional as a contact.

  This invention is made | formed in view of such a point, and it aims at providing the electric equipment which can ensure a contact life.

  The present invention provides a fixed contact integrally formed by a conductive wire disposed substantially parallel to the longitudinal direction of the operation unit between the front surface and the back surface of the substrate provided in the longitudinal operation unit having a grip. A hollow bulge portion having a substantially hemispherical shape having flexibility, and a movable contact provided on the inner surface of the bulge portion and disposed on the surface of the substrate via a gap to open and close the fixed contact. And a contact plate provided on the substrate and an electric element electrically connected to the fixed contact by a conductive wire by operation of the bulging portion.

  According to the present invention, a fixed contact is integrally formed by arranging a conductive wire substantially parallel to the longitudinal direction of the operation unit between the front and back surfaces of the substrate provided in the longitudinal operation unit having a grip. By doing so, since the longitudinal direction of the operation portion, which is the operation direction of the operation portion, and the conductive wire are substantially parallel, the movable contact is hardly rubbed against the conductive wire, and the contact life can be ensured.

  The configuration of an embodiment of the present invention will be described below with reference to FIGS.

  In FIG. 7, reference numeral 1 denotes a vacuum cleaner main body. The vacuum cleaner main body 1 collects dust sucked together with intake air generated by driving the electric blower 2 accommodated in a dust collection pack (not shown) that can be attached and detached. Dust.

  The vacuum cleaner main body 1 has a main body suction port 3 for sucking air from the outside. An elongated substantially cylindrical hose body 4 that is flexible and can be bent is connected to the main body suction port 3. At the tip of the hose body 4, a hand operation unit 5 is provided as a longitudinal operation unit capable of selecting an operation mode of the electric blower 2. The hand operating section 5 is provided with a longitudinal switch unit 6 as an electric device for setting the electric blower 2 and the like in the cleaner body 1 to a plurality of drive modes. A gripping part 7 as a gripping part to be gripped is projected in a longitudinal direction toward the base end side.

  Further, an elongated and substantially cylindrical extension tube 8 that can be extended and contracted is detachably connected to the distal end of the hand operation unit 5. Furthermore, a floor brush 9 serving as a suction port for sucking dust on the carpet is detachably connected to the tip of the extension pipe 8, for example, placed on a carpet on the floor of the room. ing.

  Further, as shown in FIG. 3, a switch mounting portion 21 serving as a mounting concave portion to which the switch unit 6 is mounted is formed on the upper surface of the hand operating portion 5 so as to open upward. The switch mounting portion 21 is formed in a longitudinal shape along the longitudinal direction of the gripping portion 7 that is the longitudinal direction of the hand operating portion 5. Further, the switch mounting portion 21 includes an oval display portion receiving recess 22 and an elongated rectangular substrate receiving recess 23. The switch mounting portion 21 is provided in front of the gripping portion 7, that is, at a position where it can be operated with the thumb of the hand of the operator who grips the gripping portion 7.

  The display unit accommodating recess 22 is provided to be recessed in a concave cross section.

  The substrate housing recess 23 is provided in a concave shape in the center area of the bottom of the display unit housing recess 22. Further, at one end side in the longitudinal direction of the bottom of the substrate housing recess 23, a rectangular wiring insertion hole 24 serving as a housing hole communicating with the inside of the hand operating section 5 and a plurality of, for example, two rectangular elements are housed. The recesses 25 are provided so as to be separated from each other in the longitudinal direction of the switch mounting portion 21.

  As shown in FIG. 1, the switch unit 6 has a three-layer structure in which a circuit board 31 as a substrate, a thin film body 32 as a contact plate, and a spacer 33 are integrally joined with an adhesive or the like. ing.

  As shown in FIGS. 1 and 5, the circuit board 31 includes a board body 34 formed in an elongated rectangular flat plate shape corresponding to the inner shape of the board housing recess 23 with, for example, paper phenol or the like. A plurality of, for example, three circular switch element placement portions 35 having a circular shape in plan view are provided on the surface that is one main surface of the main body 34, and a lower pattern 36 is formed on the back surface that is the other main surface.

  As shown in FIG. 5A, for example, a plurality of switch element placement portions 35 are provided at three locations in the present embodiment, are arranged along the center line in the width direction of the substrate body 34, and are operated at hand. They are spaced apart from each other in the longitudinal direction of the substrate body 34, which is the longitudinal direction of the part 5. Further, a plurality of, for example, four pairs of insertion holes 38 that form a pair in the longitudinal direction of the substrate body 34 are formed in the vicinity of the outer peripheral portion inside the switch element arrangement portion 35.

  A pair of these insertion holes 38 are positioned along the longitudinal direction of the substrate body 34, and are disposed at positions symmetrical with respect to the center line in the width direction of the substrate body 34. That is, two pairs of insertion holes 38 are provided on one side in the width direction of the switch element arrangement portion 35 and two pairs on the other side. A jumper wire 41 as a conductive wire is inserted through each of the pair of insertion holes 38.

  These jumper wires 41 are uncovered bare short-circuit wires, and are continuous on the surface side of the substrate body 34 as shown in FIGS. 1 and 2, etc., and both end portions thereof are inserted through the insertion holes 38, respectively. The lower pattern 36 is electrically connected and fixed by solder 42. And the switch element 43 as a fixed contact is each provided by the four jumper wires 41 of each switch element arrangement | positioning part 35. As shown in FIG. These switch elements 43 are arranged on the front side of the board body 34 in the width direction of the board body 34 at a substantially equal interval and are linearly arranged along the longitudinal direction of the board body 34. It is constructed integrally.

  The lower pattern 36 is provided with a resist 44 at a predetermined position including the periphery of the insertion hole 38 as shown in FIG. In addition, a plurality of, for example, two pairs of resistance elements 45, which are generation elements as electrical elements, are attached to the lower pattern 36 at positions facing each switch element 43 of the substrate body 34. Further, the lower pattern 36 includes a signal as a transmission line that is inserted from the wiring insertion hole 24 into the hand operating portion 5 on the proximal end side of the gripping portion 7 that is one end portion in the longitudinal direction of the substrate body 34. One end of a lead wire 46 that is a wire is electrically connected.

  In addition, one jumper wire 41 of the switch element 43 located on the distal end side of the grip portion 7 which is the other end portion in the longitudinal direction of the substrate body 34 is electrically connected to the resistance element 45 via the lower pattern 36. Has been. These resistance elements 45 may be provided by any method such as printing of resistance element paste, baking, or mounting by mounting a chip-like resistor by surface mounting.

  On the other hand, the thin film body 32 is formed into a flexible film shape such as polyethylene terephthalate or polyimide, and has a substantially elliptical plate shape with a size larger than the outer shape of the circuit board 31, as shown in FIG. The portion 21 is formed in a shape corresponding to the inner shape of the display portion receiving recess 22. In addition, the thin film body 32 has, for example, a plurality of embossed portions 51 corresponding to the switch elements 43 of the circuit board 31 as hemispherical bulging portions toward the surface side which is one main surface side. In the embodiment, three are provided.

  Further, on the surface of the thin film body 32, as shown in FIGS. 4 (a) to 4 (c), an operation display unit 52 for displaying the contents of the driving state of the electric blower 2 corresponding to each switch element 43 is provided. Print formed. Further, on the back surface side, which is the other main surface side of the thin film body 32, is located on the inner surface side of the embossed portion 51, in a substantially arc shape, silver paste or the like as a conductive paste is screen-printed or baked, electrolytic plating, A movable contact 53 formed by painting or the like is provided.

  Further, the embossed portion 51 is provided at a position corresponding to the switch element 43 along the center line in the width direction of the thin film body 32. Further, the embossed portion 51 is provided in such a size that the switch element 43 is located within the projected area. These embossed portions 51 face the switch elements 43 of the circuit board 31 with a predetermined gap 54 in a state where the switch unit 6 is formed, and constitute a setting button 55 as a normally open switch body.

  Further, the spacer 33 is formed in a shape corresponding to the shape of the circuit board 31 by, for example, polyethylene terephthalate, and is sandwiched between the circuit board 31 and the thin film body 32 as shown in FIG. Further, as shown in FIGS. 1 and 2, the spacer 33 has a thickness dimension slightly smaller than the thickness dimension of the jumper line 41, that is, the projecting dimension of the jumper line 41 projecting from the surface of the circuit board 31. Therefore, the upper end portion of the jumper wire 41 slightly protrudes to the surface side of the spacer 33 in a state where the spacer 33 is bonded to the surface side of the circuit board 31.

  As shown in FIG. 6, the spacer 33 is provided with circular holes 56 in a plan view at positions corresponding to the switch elements 43, and the holes 56 communicate with each other between the holes 56. The portion 57 is formed along the longitudinal direction, and a continuous portion 58 is provided between the hole portions 56 located at both ends of the spacer 33.

  The communication portion 57 is provided in the vicinity of the center line of the spacer 33 in the width direction.

  The continuous portion 58 is disposed so as to pass through the hole 56 and the central portion of each communication portion 57 along the longitudinal direction of the circuit board 31 that is the longitudinal direction of the spacer 33. In a state of being bonded to the side, the jumper line 41 is positioned in parallel between the two jumper lines 41 located across the center line in the width direction of the circuit board 31.

  When mounting the switch unit 6, as shown in FIG. 3, the resistance element 45 of the switch unit 6 is accommodated in the element accommodating recess 25 of the switch mounting portion 21, and the lead wire 46 of the switch unit 6 is connected to the switch unit 6. The board body 34 of the circuit board 31 of the switch unit 6 is received in the board receiving recess 23 of the switch mounting part 21 and the thin film body 32 of the switch unit 6 is inserted into the wiring insertion hole 24 of the mounting part 21. The switch mounting portion 21 is housed in the display portion housing recess 22.

  Next, the cleaning operation of the above embodiment will be described.

  First, the worker sequentially connects the hose body 4, the extension pipe 8, and the floor brush 9 to the main body suction port 3 of the cleaner body 1.

  Further, when the operator pulls out the power cord from the cleaner body 1 and connects it to an outlet (not shown), and then operates the predetermined setting button 55 by gripping the grip portion 7, the embossed portion of the thin film body 32 of the switch unit 6. 51 is recessed, and the movable contact 53 on the back surface of the embossed portion 51 is in electrical contact with the switch element 43 of the circuit board 31 of the switch unit 6 on the lower side of the embossed portion 51 corresponding to the movable contact 53. A current flows through the switch element 43.

  As a result, the control means is controlled by the current flowing through the switch element 43, whereby a current is supplied to the electric blower 2 in the cleaner body 1, and the electric blower 2 is driven.

  The dust sucked together with the air from the tip of the floor brush 9 sequentially passes through the extension pipe 8 and the hose body 4 from the floor brush 9 and then is guided to the main body suction port 3 of the cleaner body 1 to be cleaned. It is collected in a dust collection pack accommodated in the machine body 1.

  The air in which the dust is collected is sucked into the electric blower 2 to become exhaust air, and is exhausted from an exhaust port (not shown) of the cleaner body 1 to the outside.

  In this way, when the switch unit 6 is provided in the longitudinal hand operating part 5 having the gripping part 7, the operator extends the thumb of the hand gripping the gripping part 7 along the longitudinal direction of the hand operating part 5. The switch unit 6 is operated by moving the embossed portions 51 back and forth. That is, the longitudinal direction of the hand operation unit 5 is the operation direction of the switch unit 6. In other words, when the operator operates and pushes the embossed part 51 to deform it, a force is applied along the longitudinal direction of the hand operating part 5, and the embossed part 51 is deformed in the longitudinal direction of the hand operating part 5.

  For this reason, in the above embodiment, the jumper wire 41 is disposed between the front surface and the back surface of the circuit board 31 of the switch unit 6 so as to be substantially parallel to the longitudinal direction of the hand operating section 5 so that the switch element 43 is integrated. By configuring, the operation direction of the hand operation section 5, that is, the pushing direction of the embossing section 51 and the jumper line 41 are substantially parallel. For example, a jumper line is provided along the direction intersecting with the operation direction of the hand operation section. Compared to the case, the movable contact 53 is not easily rubbed against the jumper wire 41, and the silver paste or the like forming the movable contact 53 is not easily peeled off, so that the contact life can be ensured.

  In addition, a spacer 33 is provided in which the two are arranged substantially in parallel in the region of the embossed portion 51 and have a thickness dimension smaller than that of the jumper wire 41 protruding from the surface of the circuit board 31. The spacer 33 is a jumper wire. By having the continuous portion 58 arranged in parallel between 41, the step between the jumper wires 41 can be reduced by the spacer 33, and the friction between the movable contact 53 and the switch element 43 can be further suppressed, Since damage due to rubbing between the spacer 33 itself and the movable contact 53 can be prevented, the contact life can be further secured.

  Furthermore, by arranging a plurality of jumper wires 41 in the width direction of the circuit board 31, the movable contact 53 can be brought into contact with the switch element 43 regardless of which position of the embossed portion 51 is pressed. It can be improved.

  And the switch element 43 located in the surface side of the circuit board 31 of the switch unit 6 attached to the switch attachment part 21 of the hand operation part 5 of the hose body 11 is comprised by the jumper wire 41, and this jumper wire 41 is connected to the circuit. By inserting the insertion hole 35 of the substrate 31 and electrically connecting to either the resistance element 45 or the lead wire 46 on the back surface of the circuit substrate 31 through the lower pattern 35, the circuit substrate 31 is relatively inexpensive. It can be composed of a simple paper phenol substrate.

  Therefore, by configuring the circuit board 31 with a paper phenol substrate, there is no need to use a relatively expensive flexible substrate, and the paper phenol substrate has a certain degree of strength. The circuit board 31 can be manufactured at a lower cost because the electrical connection to the through hole, which requires a relatively expensive processing cost, is formed by the jumper wire 41. The manufacturing cost of the circuit board 31 can be further reduced, and the manufacturability of the switch unit 6 including the circuit board 31 can be improved.

  Further, in the region of the embossed portion 51, that is, in the gap 54 formed between the embossed portion 51 of the thin film body 32 and the circuit board 31, an insertion hole 38 is provided, and the jumper wire 41 constituting the switch element 43 is inserted into these insertion holes. Since it was led out to the surface side of the circuit board 31 from 35, it is not necessary to provide a new gap portion for hiding the jumper wire 41 between the thin film body 32 and the circuit board 31. The manufacturing cost of the switch unit 6 composed of the substrate 31 can be further reduced, and the jumper wire 41 cannot be projected on the surface of the thin film body 32, so that the appearance is not impaired.

  Furthermore, since the switch element 43 of the circuit board 31 is configured by the jumper wire 41, the configuration and manufacture of each switch element 43 of the circuit board 31 becomes easier, and the resistance element 45 is provided on the back surface of the circuit board 31. By mounting, the size of the circuit board 31 itself can be sized to fit within the projection of the thin film body 32, so that the manufacturing cost of the switch unit 6 including the circuit board 31 can be further reduced.

  In addition, since the heat resistance temperature of the flexible board is relatively low, it is necessary to coat the surface with a resin that can withstand soldering. However, by using a paper phenol board as the circuit board 31, the heat resistance temperature of the circuit board 31 itself can be reduced. Since the resistance element 45 can be directly mounted on the circuit board 31 by soldering, the manufacturing cost of the switch unit 6 including the circuit board 31 can be further reduced.

  In the above embodiment, the circuit board 31 of the switch unit 6 is housed in the board housing recess 23 of the switch mounting section 21 of the hand operating section 5. However, if the circuit board 31 can be housed in the switch mounting section 21. The switch mounting portion 21 may not be provided with the substrate housing recess 23.

  Further, the switch unit 6 in which the thin film body 32 is bonded to the surface of the circuit board 31 has been described. However, the thin film body 32 and the circuit board 31 are not bonded, and are accommodated in the switch mounting portion 21 of the hand operating section 5. Also good.

  Furthermore, as shown in FIG. 8, the structure which provides the switch unit 6 in an upright type vacuum cleaner is also possible.

  Here, the upright type electric vacuum cleaner includes a vertical vacuum cleaner body 1 in the vertical direction, and the electric blower 2 is accommodated in the vacuum cleaner body 1 with the suction side facing downward. A cyclone dust collecting portion 61 communicating with the suction side of the electric blower 2 is provided at the lower portion of the cleaner body 1.

  Further, a floor brush 9 communicating with the suction side of the electric blower 2 is connected to the lower end portion of the vacuum cleaner main body 1 through a cyclone dust collecting portion 61, and the cleaning brush main body 1 is connected to the upper portion of the rear side of the vacuum cleaner main body 1. A handle portion 62 is extended as an operation portion that enables the machine body 1 to be operated. The handle portion 62 is formed in a longitudinal shape along the vertical direction, a grip portion 63 as a grip portion gripped by the operator is provided at the upper end portion, and a switch is provided on the front side below the grip portion 63. The unit 6 is disposed in the longitudinal direction along the vertical direction that is the longitudinal direction of the handle portion 62.

  As described above, by arranging the switch unit 6 along the longitudinal direction of the handle portion 62, it is possible to achieve the same operational effects as in the above-described embodiment.

  Moreover, as shown in FIG. 9, the structure which provides the switch unit 6 in a handy type vacuum cleaner is also possible.

  Here, this handy type vacuum cleaner includes a vacuum cleaner main body 1 that is longitudinal in the front-rear direction, and the electric blower 2 is housed in the vacuum cleaner main body 1 with the suction side facing forward. A front part of the electric blower 2 in the machine main body 1 is provided with a dust collecting unit 65 that communicates with the suction side of the electric blower 2 and collects dust with a paper pack (not shown). The lid 66 can be opened and closed.

  Further, a floor brush 9 is connected in communication with the front portion of the dust collecting portion 65, and a loop-like shape that is a grip portion as an operation portion is provided on the upper part of the vacuum cleaner body 1 on the rear side of the dust collecting portion 65. A gripping portion 67 is provided in the longitudinal direction in the front-rear direction, and the switch unit 6 is disposed in the longitudinal direction along the front-rear direction, which is the longitudinal direction of the gripping portion 67, at the front portion of the gripping portion 67.

  Thus, by arranging the switch unit 6 along the longitudinal direction of the gripping portion 67, it is possible to achieve the same operational effects as in the above-described embodiment.

  The configuration in which the switch unit 6 is disposed along the longitudinal direction of the hand operation unit 5, the handle unit 62, or the grip unit 67 has been described. However, the switch unit 6 is disposed on the hand operation unit 5, the handle unit 62, or the grip unit. In the case where it is disposed in a longitudinal direction along the direction intersecting the longitudinal direction of the portion 67, the disposing direction of the jumper wire 41 or the disposing direction of the continuous portion 58 of the spacer 33, etc. It is set appropriately according to the longitudinal direction of the handle part 62 or the grip part 67.

  Further, although the switch unit 6 provided with three setting buttons 55 has been described, at least one setting button may be provided.

  Furthermore, the thin film body 32 can be a thin film synthetic resin substrate of any material as long as it is a flexible film.

  Furthermore, when the configuration of the switch unit 6 is simplified and the thickness is reduced, a configuration in which the spacer 33 is not provided is also possible.

  The resistance element 45 can also be provided at a position other than the back surface side, such as the front surface side of the circuit board 31.

  Moreover, if the switch unit 6 is provided in the apparatus which has a long operation part other than a vacuum cleaner, the effect similar to each said embodiment can be acquired.

It is a longitudinal cross-sectional view which shows a part of electric equipment of one embodiment of this invention. It is a cross-sectional view which shows a part of said electric equipment. It is a disassembled perspective view which shows the attachment process of an electric equipment same as the above. (a) is a top view showing the same electric device, (b) is a side view showing the same electric device, and (c) is a bottom view showing the same electric device. (a) is a plan view showing a substrate of the electric device, and (b) is a bottom view showing the substrate of the electric device. It is a top view which shows the spacer of an electric equipment same as the above. It is a perspective view which shows the vacuum cleaner provided with the electrical equipment same as the above. It is a perspective view which shows other embodiment of the vacuum cleaner provided with the electric equipment same as the above. It is a perspective view which shows other embodiment of the vacuum cleaner provided with the electric equipment same as the above.

Explanation of symbols

5 Hand operating section as operating section 6 Switch unit as electrical equipment 7 Grip section as gripping section
31 Circuit board as a substrate
32 Thin film as a contact plate
33 Spacer
41 Jumper wire as conductive wire
43 Switch element as fixed contact
45 Resistance elements as electrical elements
51 Embossed part as bulging part
53 Movable contact
54 Gap
62 Handle section as operation section
63 Grip as grip
67 Grasping part that is the grip part as the operation part

Claims (2)

A substrate provided in a longitudinal operation portion having a grip portion;
Between the front surface and the back surface of the substrate, a fixed contact configured integrally with a conductive wire disposed substantially parallel to the longitudinal direction of the operation unit;
A hollow bulging portion having a substantially hemispherical shape having flexibility, and a movable contact provided on the inner surface of the bulging portion and disposed on the surface of the substrate via a gap to open and close the fixed contact. A contact plate with
An electrical device provided on the substrate and electrically connected to the fixed contact by the conductive wire by operation of the bulging portion. In the substrate, in the region of the bulging portion, two or more conductive wires are arranged substantially in parallel,
A spacer having a portion arranged in parallel with the conductive lines between the conductive lines and having a thickness dimension smaller than a protruding dimension of the conductive lines from the substrate is provided. The electrical apparatus according to 1.

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