JP2013131312A - Switching device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To ensure a long life by suppressing flow of oil in a lubricant provided between the tip of a slider and the surface of a movable contact piece, in a switching device configured so that the contact state of the movable contact piece is switched by sliding of a slider.SOLUTION: Flow (arrow C) of the oil of a lubricant is controlled by recesses 8g and/or protrusions provided, between a portion on which the tip of a slider slides and a portion where the contact state with a fixed contact is switched, so as to extend in a direction intersecting the direction of connecting them. Consequently, arrival of the oil of a lubricant to the fixed contact is delayed. Since degradation of performance of the switching device is slowed, a long life can be ensured.

Description

  The present invention relates to a switch device configured to switch a contact state of a movable contact piece by sliding of a slider.

  2. Description of the Related Art Conventionally, as a switch device configured to switch the contact state of a movable contact piece by sliding of a slider, for example, there is a switch device for a window regulator (power window) of an automobile. In this type of switch device, the movable contact piece is provided so as to be able to swing in opposition to the fixed contact, and the operating member is provided with the slider by placing a slider between the movable contact piece. By swinging, the tip of the slider is slid on the movable contact piece to swing the movable contact piece, thereby switching the contact state between the movable contact piece and the fixed contact piece. Has been.

  In this case, a lubricant (particularly grease) is provided between the tip of the slider and the movable contact piece so that the slider slides relative to the movable contact piece. (For example, refer to Patent Document 1).

JP 2010-97774 A

  In the case of the above conventional ones, depending on the usage environment, especially the temperature, the oil (base oil) in the lubricant provided between the tip of the slider and the movable contact piece melts, There is a case where it flows on the surface of the movable contact piece and reaches the fixed contact point where the movable contact piece comes into contact. When this happens, especially when the fixed contact where the oil content in the lubricant has reached is connected to the power supply, the oil content in the lubricant is reduced by the arc generated when the fixed contact and the movable contact piece are separated from each other. It is carbonized and becomes a foreign substance, which reduces the performance of the switch device and shortens its life.

  The present invention has been made to solve the above-mentioned problems, and the object thereof is to suppress the flow of oil in the lubricant provided between the tip of the slider and the movable contact piece, It is in providing the switch apparatus which can ensure a long lifetime.

  In order to achieve the above object, a switch device of the present invention is provided with a fixed contact, a movable contact piece that is provided so as to be swingable facing the fixed contact, and whose contact state with the fixed contact is switched by the swing. The slider is arranged between the movable contact piece and is swingably operated with the slider, and the tip end of the slider is slid on the movable contact piece by the swing. An operating member for moving the movable contact piece to provide a lubricant between the tip of the slider and the movable contact piece. Between the portion where the tip of the child slides and the portion where the contact state with the fixed contact is switched, it extends in a direction crossing the direction connecting them, thereby restricting the flow of oil in the lubricant. It is characterized by providing concave or convex strips or both.

  According to the above means, between the portion of the movable contact piece where the tip of the slider slides and the portion where the contact state of the fixed contact is switched, in a direction crossing the direction connecting them. By restricting the flow of the oil component of the lubricant by the elongated grooves and / or the protrusions, the oil component of the lubricant is delayed from reaching the fixed contact. Thereby, the fall of the performance of a switch apparatus can be delayed and a lifetime can be ensured long.

The fragmentary top view of the movable contact piece which shows 1st Example of this invention Longitudinal side view showing the overall configuration of the switch device Perspective view of movable contact piece Top view of movable contact piece Enlarged plan view of the V part in FIG. Sectional view along line VI-VI in Fig. 5 FIG. 6 equivalent view showing a second embodiment of the present invention. FIG. 6 equivalent view showing a third embodiment of the present invention. FIG. 5 equivalent view showing the fourth embodiment of the present invention. FIG. 5 equivalent view showing the fifth embodiment of the present invention. FIG. 5 equivalent view showing the sixth embodiment of the present invention FIG. 5 equivalent view showing a seventh embodiment of the present invention. FIG. 3 equivalent view showing an eighth embodiment of the present invention.

A first embodiment (first embodiment) of the present invention will be described below with reference to FIGS.
First, FIG. 2 shows the overall configuration of a switch device for a vehicle, in particular, a window regulator for an automobile. The conductors 2, 3, and 4 are embedded in the base 1 with a part exposed upward. ing. In this case, although not shown in detail, the conductor 2 is a power supply conductor and is connected to the battery of the automobile. The conductor 3 is a load conductor and is connected to the motor of the window regulator. The conductor 4 is a ground conductor and is connected to the body of the automobile.

  A contact piece is attached to the exposed portion of the conductor 2, and in particular, a contact 5 that protrudes upward is formed. The exposed portion of the conductor 3 is raised to form a contact 6. Similar to the conductor 2, the conductor 4 is provided with a contact piece attached to the exposed portion, and in particular, a contact 7 protruding upward is formed. These contacts 5 to 7 are all fixed contacts, and the fixed contact 5 is a fixed contact for power supply, the fixed contact 6 is a fixed contact for load, and the fixed contact 7 is for ground in connection with the conductors 2 to 4. It is a fixed contact.

  Above the fixed contacts 5 to 7, a movable contact piece 8 that faces them is disposed. This movable contact piece 8 is made of a highly conductive plate material such as a silver plate, and as shown in FIGS. 3 and 4, is long in the front-rear direction (left-right direction in the figure) and has a V-shaped portion near the center. Are bent to form a valley portion 8a, and oblique portions 8b and 8c are formed on both front and rear sides thereof. Also, a load contact portion 8d is formed in an inverted U shape on both sides of the valley portion 8a from the oblique portion 8b side, and a power contact portion 8e is bent in a letter shape at the front end. The ground contact portion 8f is bent at the rear end in a symmetrical letter shape with the power contact portion 8e.

  Further, as shown in FIGS. 5 and 6, a plurality of concave stripes 8 g are formed on the surface portion of the front portion of the inclined portion 8 b on the front side of the movable contact piece 8. Each of the concave strips 8g extends linearly in a direction intersecting with the longitudinal direction of the front inclined portion 8b of the movable contact piece 8, in particular in a direction orthogonal thereto, and is formed on the upper and lower surface portions of the movable contact piece 8. Forming.

  With this configuration, as shown in FIG. 2, the movable contact piece 8 is configured such that the load contact portion 8d is placed on the load fixed contact 6 and swings up and down around the load fixed contact 6 as a fulcrum. Provided. Further, as shown in FIGS. 4 and 1, a lubricant 9 is applied in advance from the valley portion 8a of the movable contact piece 8 to the root portion of the front inclined portion 8b. The lubricant 9 is grease in this case, but may be other lubricating oil or the like.

  A body 10 is provided from above the fixed contacts 5 to 7, the movable contact piece 8, and the base 1 to the outer periphery. The body 10 is coupled to the base 1 and has a cylindrical portion 10 a near the center located on the movable contact piece 8. The cylindrical portion 10a has bearing holes 10b on the left and right sides of the upper portion. Further, the protruding portion 11a of the operation member 11 is inserted and positioned in the cylindrical portion 10a.

  The operating member 11 has a tooth-like part 11b for finger-hanging and a hollow part 11c at the front part, and has the protruding part 11a on the back side near the center behind them, and the lower half part of the protruding part 11a is hollow. The hole 11d opened downward is formed. The spring 11 and the slider 13 are accommodated in the hole 11d. In this case, the spring 12 is a compression coil spring, the slider 13 is a piece having a cylindrical shape and a tip formed in a spherical shape, and the tip of the slider 13 is formed in the hole by the spring force of the spring 12. It protrudes downward from 11d.

Further, shaft portions 11e are formed on both the left and right sides in the vicinity of the center of the protruding portion 11a. The shaft portion 11e is fitted into the bearing hole 10b of the body 10, and the operation member 11 is centered on the shaft portion 11e. Are provided so as to swing up and down. At the same time, the tip of the slider 13 is slidably pressed against the valley 8a of the movable contact piece 8. As a result, the lubricant 9 is interposed between the tip of the slider 13 and the movable contact piece 8.
As a result, the concave strip 8g of the movable contact piece is located between the portion of the movable contact piece 8 where the tip of the slider 13 slides and the power contact portion 8e. It extends in a direction intersecting (particularly orthogonal) with the connecting direction.

Next, the operation of the switch device configured as described above will be described.
First, in FIG. 2, the load contact portion 8 d of the movable contact piece 8 contacts the load fixed contact 6, and the ground contact portion 8 f contacts the ground fixed contact 7. The normal state where the ground contact portion 8f is connected is shown. At this time, the power contact portion 8e is spaced upward from the power fixed contact 5.

  From this normal state, when the finger is put on the toothed portion 11b of the operating member 11 and the operating member 11 is pulled up as indicated by an arrow A in the figure, the operating member 11 swings clockwise around the shaft portion 11e. Then, the protruding portion 11a tilts in the same direction with the spring 12 and the slider 13. As a result, the slider 13 slides on the movable contact piece 8 from the valley portion 8a of the movable contact piece 8 to the inclined portion 8b on the front side while contracting the spring 12, whereby the movable contact piece 8 is moved. The piece 8 is swung as indicated by an arrow B in the figure with the top of the load fixed contact 6 as a fulcrum. As a result, the ground contact portion 8f of the movable contact piece 8 is separated upward from the ground fixed contact 7, and instead, the power contact portion 8e contacts the power fixed contact 5 to supply the load fixed contact 6 to the power source. It will be in the state connected to the fixed contact 5 for use.

When the finger on the toothed portion 11b of the operating member 11 is released from that state, the slider 13 is moved from the inclined portion 8b on the front side of the movable contact piece 8 to the trough portion 8a by the return spring force of the spring 12. Slide back on the movable contact piece 8. As a result, the movable contact piece 8 is returned, the power contact portion 8e is separated from the power fixed contact 5, and the ground contact portion 8f is brought into contact with the ground fixed contact 7. At the same time, the operation member 11 is returned.
When operated in this way, the lubricant 9 is located between the tip of the slider 13 and the movable contact piece 8 and functions to improve the sliding of the slider 13 with respect to the movable contact piece 8.

Then, depending on the use environment, particularly the temperature, the oil in the lubricant 9 melts and flows little by little on the surface of the movable contact piece 8 as shown by the arrow C in FIG. 9 flows not only to the upper surface, which is the surface to which 9 is applied, but also to the lower surface and flows on both surfaces. On the other hand, in the switch device having the above-described configuration, the power contact portion which is a portion where the contact state of the movable contact 8 with the power fixed contact 5 is switched from the portion where the tip of the slider 13 slides. 8e is provided with a groove 8g extending in a direction intersecting with the direction connecting them, and when the oil content of the lubricant 9 reaches the portion of the groove 8g, the groove 8g. As shown by arrows C ₁ and C ₂ in FIG. 1, the flow is changed along the recess 8g. Thus, the flow of the oil component of the lubricant 9 to the power contact point 8e is restricted, and the oil component is delayed from reaching the power contact point 8e. Thereby, the fall of the performance of a switch apparatus can be delayed and a lifetime can be ensured long.

  7 to 13 show second to eighth examples (second to eighth embodiments) of the present invention. FIG. 7 shows the first example of the movable contact piece 8. FIG. 8 shows the movable contact piece 8 in addition to the concave strip 8g of the first embodiment, in addition to the concave strip 8g. FIG. 9 shows a third embodiment in which the movable contact piece 8 is provided with V-shaped ridges and / or ridges 8i instead of the linear ridges 8g of the first embodiment. FIG. 10 shows a fifth embodiment in which the movable contact piece 8 is provided with a U-shaped groove and / or protrusion 8j instead of the linear groove 8g of the first embodiment. FIG. 11 shows a sixth embodiment in which a wave-like groove and / or a ridge or both of them are provided in place of the linear groove 8g of the first embodiment, and FIG. 12 shows the first embodiment. Example groove 8g Instead, FIG. 13 shows not only the upper and lower surface portions of the movable contact piece 8 but also the left and right surface portions of the movable contact piece 8. 8th Example which provided the groove 8g also in the surface part (both side part) is each shown. The concave strip 8g of the eighth embodiment may be changed to the convex strip 8h of the second embodiment, or may be provided alternately with the convex strip 8h.

  Even in these cases, the concave strips 8g, the convex strips 8h, and the concave strips or the convex strips or both 8i to 8l are provided for the power source and the portion where the tip of the slider 13 slides. It is located between the contact portion 8e and extends in a direction intersecting with the direction connecting them, and the flow of the oil of the lubricant 9 to the power supply contact portion 8e is controlled as in the first embodiment. Has the effect of In particular, in the eighth embodiment, the concave strip 8g is provided not only on the upper and lower surface portions of the movable contact piece 8, but also on the left and right surface portions (both side surface portions), so that the oil content of the lubricant 9 is movable. It is possible to prevent the left and right side surfaces from flowing from the upper surface of the movable contact piece 8 to the left and right side surfaces toward the power contact portion 8e.

In addition, the present invention is not limited only to the embodiment described above and shown in the drawings. In particular, the entire switching device is not limited to an automobile window regulator, and can be widely applied as a switching device in general.
Further, since the oil content of the lubricant 9 flowing on the surface of the movable contact piece 8 mainly flows on the upper surface of the movable contact piece 8 (the surface on which the lubricant 9 is applied), the concave stripe 8g, the convex stripe 8h, and the concave stripe or The ridges or both 8i to 8l may be provided only on the upper surface of the movable contact piece 8 (not provided on the lower surface or the side surface).

Furthermore, the groove 8g, the protrusion 8h, and the recess or protrusion or both of them 8i to 8l are provided in a plurality, so that the effect of restricting the flow of the oil of the lubricant 9 to the power contact point 8e is achieved. It ’s even better, but you can have only one each.
In addition, the concave strip 8g, the convex strip 8h, and the concave strip or the convex strip or both of them 8i to 8l are generated in the movable contact piece 8 by generating an arc at the time of contact and separation of the contacts to carbonize oil in the lubricant. Although it is provided on the power contact portion 8e side, which is likely to be a foreign object, it may be provided on the ground contact portion 8f side in addition to or instead of it.

  In the drawing, 5 is a fixed contact for power supply, 8 is a movable contact piece, 8a is a trough (a portion where the tip of the slider slides), 8e is a contact portion for power (the contact state with the fixed contact is switched). Part), 8g is a concave strip, 8h is a convex strip, 8i to 8l are concave strips or convex strips or both, 9 is a lubricant, 11 is an operating member, and 13 is a slider.

Claims (1)

A fixed contact;
A movable contact piece which is provided so as to be able to swing in opposition to the fixed contact, and whose contact state with the fixed contact is switched by the swing,
A slider is arranged between the movable contact piece and is provided so as to be swung with the slider. By the swing, the tip of the slider is slid on the movable contact piece. And an operating member for swinging the movable contact piece,
In providing a lubricant between the tip of the slider and the movable contact piece,
The movable contact piece extends between the portion where the tip of the slider slides and the portion where the contact state is switched with the fixed contact, extending in a direction crossing the direction connecting them. A switch device comprising a groove, a ridge, or both for restricting the flow of oil in a lubricant.

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