JP5261205B2 - Wiring structure for vibration type linear actuator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wiring structure of a vibrating linear actuator, which ensures that an electric wire is hardly unhooked from an electric wire holding arm. <P>SOLUTION: The wiring structure is so configured as to change the leading-out direction of an electric wire 71 and to hold the electric wire by providing a cantilever electric wire holding arm 56 for hooking the electric wire at a wiring portion 51 of the vibrating linear actuator and by hooking the electric wire 71 on the holding arm in such a way that it is wound from the end 56b of the holding arm. In this wiring structure, a contact angle between the electric wire and a contact surface is set up so that the vector direction of a pressing force 100 from the electric wire 71 that acts on the contact surface 56a where the electric wire is in contact with the holding arm, is further directed to the base end 56c side of the holding arm than the direction perpendicular to the contact surface. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a wiring processing structure in a vibration type linear actuator mainly used for an electric razor.

  Generally, an electric razor has a built-in drive actuator for driving the blade portion in the head portion on which the blade portion is mounted, and the head portion is arranged at the upper end of the rod-shaped grip portion to A driving current is supplied from a circuit unit including a battery mounted to the head toward a driving actuator mounted on the head unit. As an example, Patent Document 1 discloses an electric razor equipped with a vibration type linear actuator.

  In this type of electric shaver, it is necessary to pull out the electric wire from the vibration type linear actuator mounted on the head portion toward the grip portion. However, in a conventional example, a wiring processing portion as shown in FIGS. Was pulled out through.

  6 is a perspective view of the vibration type linear actuator as viewed from below, FIG. 7 is a bottom view of the vibration type linear actuator, and FIG. 8 is an enlarged view of a wiring processing unit provided on the bottom surface of the vibration type linear actuator.

  As shown in FIG. 6, the vibration type linear actuator has an electromagnet in which the bottom surface of the electromagnetic core block 1 including the electromagnet 10 is fixed to the top surface of a resin base 150 and the magnetic block 2 having a permanent magnet is used as a mover. The magnetic block 2 is reciprocally driven with respect to the electromagnetic core block 1 by being arranged in a state where a predetermined gap is held on the upper side of 10 and supplying a driving current to the electromagnet 10 through the electric wire 171. Is provided with a wiring processing section 151 for drawing out the electric wire 171 connected to the electromagnet 10 to the outside.

  As shown in FIG. 7, the wiring processing unit 151 is provided with first and second electric wire holding brackets 154 and 155 for winding the electric wire 171, and the second electric wire holding bracket 155 Is provided with a cantilevered wire holding arm 156 for holding the electric wire 171 in parallel with the bottom surface of the base 150 while changing the direction of the electric wire 171 drawn out of the actuator. Then, as shown in FIG. 8, the electric wire 171 previously hooked on the first electric wire holding bracket 154 is hooked from the tip 156b of the second electric wire holding arm 156 so as to be wound around the contact surface 156a of the electric wire holding arm 156. Thus, the drawing direction of the electric wire 171 is changed from a direction parallel to the bottom surface of the base 150 to a direction perpendicular to the bottom surface of the base 150 (direction perpendicular to the paper surface of FIG. 8), and at the same time, the electric wire 171 is left as it is. Hold on. In FIG. 8, a portion indicated by 171a is a lead-out end of the electric wire, and this lead-out end 171a is pulled toward the front side of the sheet.

  By the way, in the wiring processing unit 151 of the conventional vibration type linear actuator, the contact angle between the contact surface 156a of the wire holding arm 156 and the wire 171 is determined from the positional relationship between the first wire holding bracket 154 and the second wire holding bracket 155. However, as shown in FIG. 8, the direction of the vector of the pressing force 100 from the electric wire 171 acting on the contact surface 156a is set so that the direction of the vector 156b is closer to the tip 156b side of the wire holding arm 156 than the direction perpendicular to the contact surface 156a. It was.

JP 2005-354879 A

  However, when the contact angle between the contact surface 156a of the wire holding arm 156 and the wire 171 is set as described above, the pressing force 100 acting on the contact surface 156a of the wire holding arm 156 from the wire 171 hits the wire 171. When decomposed into a force 101 pressing perpendicularly to the surface 156a and a force 102 in the direction along the contact surface 156a, the force 102 in the direction along the contact surface 156a causes the electric wire 171 and the tip 156b of the electric wire holding arm 156 to move. There is a problem that the electric wire 171 is easily detached from the electric wire holding arm 156 due to the force 102.

  In view of the above circumstances, an object of the present invention is to provide a wiring processing structure of a vibration type linear actuator that makes it difficult for an electric wire to be detached from an electric wire holding arm.

In order to solve the above-mentioned problems, the invention of claim 1 includes an electromagnetic core block including an electromagnet, a magnetic block including a permanent magnet or a magnetic material piece, two electric wires for supplying current to the electromagnet, and the two And a wiring processing unit for drawing out the electric wires to the outside, and by supplying current to the electromagnet, both the electromagnetic core block and the magnetic block or at least one of the blocks is driven to reciprocate. to the wiring section of the mold a linear actuator, the wire holding arms cantilevered for hooking the two wires is provided, hook the two wires as wound on the electric wire holding arm from the tip of the wire holding arms it makes vibrating linear held by the wire holding arms the two wires together to convert the drawing direction of the two wires In the wiring processing structure in the actuator, the direction of the vector of the pressing force from the two wires acting on surface per said two wires is hitting the wire holding arm, the wire than a direction perpendicular to the contact surface The contact angle between the two wires and the contact surface is set so as to face the proximal end side of the holding arm, and one of the two wires is hung on both sides of the wire holding arm. An electric wire holding bracket for turning and an electric wire hanging arm for hanging another electric wire are provided .

According to the invention of claim 1, the direction of the vector of the pressing force acting on the contact surface of the wire holding arm from one of the two wires hooked on the wire holding bracket is perpendicular to the contact surface. since is set to face the base end side of the wire holding arm than in the direction, when pulled in the direction drawn out this one wire, to prevent the one wire that deviates from the conductive line holding arm Can do. In addition, the other of the two electric wires is hooked to be wound around the contact surface of the electric wire holding arm in the same manner as the previous electric wire after being hung on the electric wire hanging arm, and Since it is held by the wire wrapping arm and the wire holding arm as it is, the other wire can be prevented from coming off from the wire holding arm.

It is the perspective view which looked at the vibration type linear actuator of a 1st embodiment of the present invention from the bottom. It is a bottom view of the vibration type linear actuator. It is a bottom view which shows the state before routing the electric wire of the vibration type linear actuator. It is an enlarged view of the wiring processing part provided in the bottom face of the same vibration type linear actuator. It is a bottom view of the vibration type linear actuator of 2nd Embodiment of this invention. It is the perspective view which looked at the state before arranging the electric wire of the conventional vibration type linear actuator from the bottom. It is a bottom view which shows the state before routing the electric wire of the vibration type linear actuator. It is an enlarged view of the wiring processing part provided in the bottom face of the same vibration type linear actuator.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view of the vibration type linear actuator of the first embodiment viewed from below, FIG. 2 is a bottom view of the vibration type linear actuator, and FIG. 3 shows a state before wiring the wires of the vibration type linear actuator. FIG. 4 is an enlarged view of a wiring processing unit provided on the bottom surface of the vibration type linear actuator.

  This vibration type linear actuator M is mounted on the head part of an electric razor, and the left and right direction perpendicular to the shaving direction (front and rear direction) of the inner blade which is an element of the blade part equipped on the head part with respect to the outer blade The electromagnetic core block 1 including the electromagnet 10, the magnetic block (movable element) 2 including the permanent magnet and the back yoke, and the drive that is connected to the magnetic block 2 and has an inner blade (not shown) attached thereto. The base 3, the bottom surface of the electromagnetic core block 1 being fixed to its top surface, two electric wires 71 for supplying a drive current to the electromagnet 10, and the two electric wires 71 from the head portion A wiring processing unit 51 for drawing out toward a grip unit (outside) (not shown) has a function of reciprocatingly driving the magnetic block 2 by supplying electric current to the electromagnet 10.

  As shown in FIGS. 2 and 3, the wiring processing unit 51 is provided with first and second electric wire holding brackets 53 and 55 for winding the electric wire 71. The second electric wire holding bracket 55 includes a cantilevered wire holding arm 56 for holding the electric wire 71 while changing the direction of the electric wire 71 drawn out of the actuator so as to protrude toward the first electric wire holding bracket 53. Two pieces are provided in parallel with the bottom surface of the two.

  Of the two wire holding arms 56, one wire holding arm 56 is located close to the first wire holding bracket 53, and the other wire holding arm 56 is located far from the first wire holding bracket 53. And spaced apart from each other and arranged substantially in parallel. Each of the two electric wire holding arms 56 is formed as an inclined surface whose inner side surfaces are inclined inward by angles α and β with respect to a reference line K parallel to the left-right direction of the actuator. The inner side surfaces from the base end 56 c to the tip end 56 b of these arms are portions that become contact surfaces 56 a that come into contact with the wire 71 while winding the wire 71. In the wiring processing structure of the first embodiment, of the two wire holding arms 56, only one wire holding arm 56 closer to the first wire holding bracket 53 is used. A protrusion 56e is provided at the tip of the surface of the electric wire holding arm 56 facing the bottom surface of the base 50 so as not to drop when the electric wire 71 is hooked.

  Further, on the opposite side of the second electric wire holding bracket 55, an electric wire wrapping arm 54 is provided so as to hang the electric wire 71 which is not hanged around the first electric wire holding bracket 53. Furthermore, as shown in FIG. 1, guides 52 and 58 for guiding the end portion 70 of the winding drawn from the electromagnet 10 are provided on the side edge of the base 50. These guides 52 and 58 are for guiding the plurality of electric wires 71 and the terminal portions 70 of the windings so as not to get entangled. The two electric wires 71 are connected to the terminal portion 70 of the winding via the connecting portion 72 and then routed in a predetermined route by the wiring processing portion 51.

  Specifically, in this embodiment, as shown in FIG. 2, after one of the two electric wires 71 is first hooked on the first electric wire holding bracket 53, 2, the lead end 71 a of the electric wire 71 is perpendicular to the bottom surface of the base 50 from the direction parallel to the bottom surface of the base 50. At the same time, the electric wire 71 is held by the first electric wire holding bracket 53 and the electric wire holding arm 56 as it is.

  The other electric wire 71 is hung on the electric wire wrapping arm 54 on the opposite side of the second electric wire holding bracket 55 and then the second electric wire holding arm 56 in the same manner as the previous electric wire 71. It is hooked so that it may wind from the front-end | tip 56b of the contact surface 56a, and, thereby, the drawer | drawing-out end 71a of the electric wire 71 is changed from the direction parallel to the bottom face of the base 50 to the direction perpendicular | vertical to the bottom face of the base 50. At the same time, the electric wire 71 is held by the electric wire wrapping arm 54 and the electric wire holding arm 56 as it is.

  At this time, as shown in FIG. 4, it is important that the direction of the vector of the pressing force 100 acting on the contact surface 56a of the wire holding arm 56 from the electric wire 71 is greater than the direction perpendicular to the contact surface 56a. That is, the contact angle between the electric wire 71 and the contact surface 56a is set so as to face the base end 56c side of 56. Here, this relationship is established without difficulty because the inner surface of the wire holding arm 56 is inclined at an angle α.

  When such a condition is set, the pressing force 100 acting on the contact surface 56a of the wire holding arm 56 from the electric wire 71 is along the force 101 pressing the electric wire 71 perpendicular to the contact surface 56a and the contact surface 56a. When the directional force 102 is disassembled, the directional force 102 along the contact surface 56 a acts as a force for moving the electric wire 71 toward the proximal end 56 c of the electric wire holding arm 56. Therefore, this force 102 can make it difficult for the electric wire 71 to come off the electric wire holding arm 56.

  FIG. 5 shows an example in which another two electric wires 71 are routed in addition to the configuration of the first embodiment as the second embodiment of the present invention. In this example, the two wires 71 to be newly routed are hooked on the other wire holding arm 56 that is not used in the first embodiment, so that the route of the wires 71 can be changed to the base. The electric wire 71 is pulled out from a direction parallel to the bottom surface of the base 50 to a direction perpendicular to the bottom surface of the base 50.

  Also in this case, the direction of the vector of the pressing force 100 acting on the contact surface 56a of the wire holding arm 56 from the electric wire 71 is directed to the base end 56c side of the wire holding arm 56 rather than the direction perpendicular to the contact surface 56a. The contact angle between the electric wire 71 and the contact surface 56a is set. In this case, the inclination of the angle β is given to the inner surface of the electric wire holding arm 56, so that this relationship is established without difficulty.

  When such a condition is set, when the drawing end 71a of each electric wire 71 is pulled toward the front side of the drawing, the electric wire 71 moves to the base end 56c of the electric wire holding arm 56 as indicated by an arrow S. Since the force to be generated can be generated, it is possible to effectively prevent the wire 71 from coming off from the wire holding arm 56.

  In the above embodiment, the case where the magnetic block 2 reciprocally vibrates with respect to the electromagnetic core block 1 is shown as an example. However, when the electromagnetic core block 1 reciprocates with respect to the magnetic block 2, or the electromagnetic core The present invention can also be applied to the case where both the block 1 and the magnetic block 2 vibrate reciprocally. A magnetic material piece may be provided instead of the permanent magnet.

M Vibration type linear actuator 1 Electromagnetic core block 2 Magnetic block 10 Electromagnet 71 Electric wire 51 Wiring processing section
53 Electric wire holding bracket
54 Wire wrapping arm 56 Wire holding arm 56a Contact surface 56b Tip 56c Base 100 Pressing force from the wire

Claims (1)

An electromagnetic core block including an electromagnet, a magnetic block including a permanent magnet or a magnetic material piece, two electric wires for supplying current to the electromagnet, and a wiring processing unit for drawing the two electric wires to the outside In addition, the two electric wires are connected to the wiring processing unit of the vibration type linear actuator that reciprocally drives both the electromagnetic core block and the magnetic block or at least one block by supplying current to the electromagnet. A cantilevered wire holding arm is provided for hooking the wire, and the two wires are hooked so as to be wound around the wire holding arm from the tip of the wire holding arm, thereby changing the drawing direction of the two wires. In the wiring processing structure in the vibration type linear actuator in which the two electric wires are held by the electric wire holding arm,
The direction of the two wires is the pressing force of the vectors from the two wires acting on surface per bears against the wire holding arm, the base end side of the wire holding arm than perpendicular to said contact surface A wire holding bracket that sets a contact angle between the two electric wires and the contact surface so as to face each other, hangs one of the two electric wires on both sides of the electric wire holding arm, and A wiring processing structure for a vibration type linear actuator, characterized in that an electric wire wrapping arm for wrapping one electric wire is provided .

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