JP4817392B2 - Moderation mechanism of slide switch - Google Patents

Description

  The present invention relates to a moderation mechanism of a slide switch that can maintain a suitable moderation feeling (click feeling) over a long period of time.

  For operation of various devices, a slide switch that switches contact with a plurality of fixed contacts provided in a housing (case) by reciprocating a slider having a movable contact is used. This slide switch normally has two positions corresponding to ON-OFF or neutral positions between the ON states on both sides in order to prevent malfunction of the switch and to ensure contact of these contacts. A moderation mechanism (moderation means) that holds the position of the slider at three or more positions is included.

As a moderation mechanism of a conventional slide switch, a spring having a convex portion is brought into sliding contact with a wave shape (cam crest) provided on the housing side, and the slider is locked by the elasticity of this spring (for example, patents) (Refer to Documents 1 and 2 etc.) and a method in which a ball attached to the slider is pressed against a wave shape (a plurality of recesses) provided on the housing side and locked by a coil spring (spring) (Patent Documents 3 and 3). 4) and the like.
JP 2000-340069 A JP 2002-304933 A JP 2000-195372 A JP 2004-164936 A

  By the way, in the moderation mechanism of the slide switch as described above, since the moderation feeling is obtained by sliding contact between the members, there is a problem that the moderation feeling (operation feeling) is gradually lost due to the wear.

  Further, since the moderation mechanism uses springs or the elasticity of the springs, they may sag or break due to repeated operations.

  The present invention has been made to address the above-described problems, and an object thereof is to provide a moderation mechanism for a slide switch that can maintain a suitable moderation feeling over a long period of time.

  In order to achieve the above object, the invention according to claim 1 includes a fixing member fixed to the housing, and a slider disposed so as to be slidable in the longitudinal direction while being in sliding contact with the fixing member. The fixed member or the slider has three magnets arranged in a row at a predetermined interval, and the other is located at a position facing the magnet row and the same interval as the magnet row. The slide switch moderation mechanism is characterized in that three first magnetic bodies are arranged, and a second magnetic body is arranged in the approximate center between the first magnetic bodies.

  The present invention provides a slide switch used for the operation or control of various devices by constructing a moderation mechanism using magnetic material adsorption by a magnet instead of a conventional moderation unit using elasticity such as a spring. It is intended to achieve the purpose.

  That is, according to the first aspect of the present invention, the three magnets arranged in rows at predetermined intervals on the housing-side fixing member of the slide switch and the slider and the same interval as these magnets are arranged. There is a concern about wear and sag by forming a moderation mechanism comprising the three first magnetic bodies and the second magnetic body disposed substantially at the center between the first magnetic bodies. Without using a spring or a spring, the relative position of the slider with respect to the fixed member can be held at two positions, a position where the first magnetic body is attracted and a position where the second magnetic body is attracted.

  Here, it is possible to suitably employ a configuration in which the magnets are arranged in order of polarity different from those of adjacent magnets. (Claim 2)

  With this configuration, the magnetic flux of each magnet circulates, and the magnetic material can be strongly attracted. Therefore, it is possible to improve the moderation feeling (operation feeling) of the switch.

  Further, the second magnetic body is formed of a substantially U-shaped or substantially U-shaped member, and both open side end portions thereof straddle the first magnetic body located at the center of the first magnetic body row. You may arrange in. (Claim 3)

  With the above configuration, the number of parts of the switch is reduced. Moreover, when each magnet is arranged side by side in the order of magnetic poles different from each other as in the configuration of the second aspect, the magnetic flux of the magnet circulates through the second magnetic body. It is possible to hold the slider more strongly at the position where the is adsorbed.

  The magnetic body may be formed in a roller shape that rolls on the magnet array. (Claim 4)

  With this configuration, it is possible to reduce the wear of the magnetic material due to repeated use of the switch.

  Moreover, in order to hold | maintain these magnetic bodies more strongly, you may employ | adopt a rare earth magnet for each said magnet. (Claim 5)

  As described above, according to the moderation mechanism of the present invention, it is possible to maintain a suitable moderation feeling over a long period of time without wear or sag of the moderation means.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
1 and 2 are diagrams for explaining the operation of the moderation mechanism of the slide switch in the present embodiment, and FIG. 3 is a diagram showing the configuration of the main components of the moderation mechanism. In these drawings, in order to make the internal structure of the switch easier to see, the switch on the front side of the figure and the cover for protecting each switch and the entire moderation mechanism are omitted.

  The slide switch in the present embodiment is attached to the tip of an operation lever of a working vehicle such as a forklift or a power shovel, and is used to switch forward or reverse by operating the switch.

  The moderation mechanism (moderation means) used in the slide switch includes a substantially rod-shaped fixing member 1, a slider 2 disposed on the fixing member 1, and two switches 3 and 3 (one is not shown). ), And the fixing member 1 is fixed to a bracket (housing) 4 serving as a mounting base for the operation lever or the like.

  The slider 2 is mounted so as to be slidable in the longitudinal direction with respect to the fixed member 1, and small switches 3 which are alternately turned on by the movement of the slider 2 are attached to both sides in the width direction. Yes. Note that the fixing member 1 and the slider 2 are configured using a non-magnetic material so as not to hinder the magnetic flux of a magnet described later.

  The moderation mechanism of the slide switch in the present embodiment is characterized in that three magnets 11 (N, S, N) are arranged at fixed intervals on a fixing member 1 fixed to the bracket 4, and this fixing member This is that three first magnetic bodies 21 (21A, 21B, 21C) are arranged on the opposing surface of the slider 2 that is in sliding contact with 1, at the same interval as the 11 rows of magnets. In addition, end portions 22 a and 22 a of the second magnetic body 22 are inserted at substantially the center between the first magnetic bodies 21.

  As shown in FIG. 3, each first magnetic body 21 is formed in a roller shape that rolls on the magnet 11, and is inserted into each groove 2 a provided inside the slider 2. The second magnetic body 22 is formed of a substantially U-shaped member (ferromagnetic material), and is inserted into the recess 2 b provided in the slider 2, and both open side end portions 22 a and 22 a thereof are the first magnetic body 21. It arrange | positions so that the 1st magnetic body 21B located in the center of a row | line | column may be straddled.

  In addition, rare earth magnets such as Nd (neodymium or neodymium) magnets are used for the respective magnets 11 embedded in the holes 1a of the fixing member 1, and the surface (upper side in the drawing) facing the slider 2 is N The poles, S poles and N poles are sequentially arranged.

Next, the operation of the moderation mechanism of the slide switch in this embodiment will be described.
FIG. 1 is a view showing a neutral state of the moderation mechanism (switches on both sides are turned off), and FIG. 2 is a view showing a state in which one switch (the back side in the drawing) is turned on after the slider is moved. is there.

  First, when each of the switches 3 on both sides is in the neutral state (FIG. 1), the slider 2 is disposed substantially at the center in the longitudinal direction of the fixing member 1, and the first magnetic bodies 21A, 21B and 21C are adsorbed to the magnets 11 (N), 11 (S), and 11 (N), respectively, disposed at opposite positions. Moreover, since the open side both ends 22a and 22a are located in the approximate center of each magnet 11 (N), 11 (S), and 11 (N), as for the 2nd magnetic body 22, the attractive force by these magnets is balanced. (Cancelled) and does not receive strong force in the sliding direction. Therefore, the position of the slider 2 is stably held by the attractive force of these magnets unless an external force is applied.

  Here, when a force is applied by an operator's finger or the like and the slider 2 is slid and moved to one side in the longitudinal direction (the left side in the drawing), the suction of each magnet 21 to each first magnetic body 21 is weakened and the two left The second magnetic body 22 is attracted by the magnets 11 (N) and 11 (S), and the slider 2 causes the end portions 22a and 22a of the second magnetic body 22 to move to the magnets 11 (N) and 11 by the attraction force. It moves at once to a position (FIG. 2) that faces (S). At this time, one switch 3 (the back side in the figure) connected to the switch lever 3a pushed up by the slider 2 is turned on. In addition, after the movement of the slider 2 is completed, the magnetic flux of the magnets 11 (N) and 11 (S) (on the left side in the drawing) circulates through the second magnetic body 22, so that the second magnetic body 22 becomes a magnet. It is strongly adsorbed and the position of the slider 2 is stably maintained.

  At this time, the first magnetic bodies 21B and 21C are located at substantially the center of the magnets 11 (N), 11 (S), and 11 (N), similarly to the second magnetic body 22 in the neutral state. The attraction force by these magnets is balanced and does not receive a strong force in the sliding direction. Therefore, these first magnetic bodies 21 do not impair the stability of the position of the slider 2.

  With the above configuration, the moderation mechanism of the slide switch according to the present embodiment is configured such that the relative position of the slider 2 with respect to the fixing member 1 is the position where the first magnetic body 21 is attracted and the position where the second magnetic body 22 is attracted. It becomes possible to hold in. In addition, since this moderation mechanism does not use a spring or the elasticity of the spring, there is no risk of wear on the sliding member. Therefore, the moderation mechanism of the slide switch in the present embodiment can maintain the moderation feeling over a long period of time.

  In the above embodiment, an example of the moderation mechanism of the slide switch is shown. However, the configuration of the moderation mechanism in the present invention is not limited to the above example, and the shape of the magnetic body and the magnet, The material can be changed arbitrarily.

  In this embodiment, a moderation mechanism that switches between ON and OFF is formed between the two switches. However, a similar moderation mechanism may be incorporated in the switch case (housing) as in the conventional example. good.

It is a figure which shows the neutral state in the moderation mechanism of the slide switch of this invention. It is a figure which shows the state which the slider moved in the moderation mechanism of the slide switch of this invention. It is a disassembled perspective view which shows the structure of the moderation mechanism of the slide switch of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fixed member 2 Slider 3 Switch 4 Bracket 11 Magnet 21 1st magnetic body 22 2nd magnetic body

Claims (5)

A fixing member fixed to the housing, and a slider disposed so as to be slidable in the longitudinal direction while being in sliding contact with the fixing member;
Three magnets are arranged in a row at a predetermined interval on one side of the fixing member or the slider, and on the other side, 3 magnets are arranged at a position opposite to the magnet row at the same interval as these magnet rows. A moderation mechanism for a slide switch, characterized in that two first magnetic bodies are arranged, and a second magnetic body is arranged substantially at the center between the first magnetic bodies.   The moderation mechanism of the slide switch according to claim 1, wherein each of the magnets is arranged in order of polarity different from that of an adjacent magnet.   The second magnetic body is formed of a substantially U-shaped or substantially U-shaped member, and its both open ends are disposed so as to straddle the first magnetic body located at the center of the first magnetic body row. The moderation mechanism of the slide switch according to claim 2, wherein the moderation mechanism is a slide switch.   The moderation mechanism of the slide switch according to any one of claims 1 to 3, wherein the first magnetic body is formed in a roller shape that rolls on the magnet row.   The moderation mechanism for a slide switch according to any one of claims 1 to 4, wherein each of the magnets is a rare earth magnet.

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