JPH02121217A - Side stand switch - Google Patents

Abstract

PURPOSE:To enhance mechanical strength and operational accuracy of a switch by slidably holding both ends of a shaft by means of the guide holes of a case, and axially sliding the shaft so as to open/close the contact of the switch. CONSTITUTION:Guide holes 1c and 1d are formed on both ends of a case 1, and a shaft 2 and a plunger 4 slide through the holes 1c and 1d. The contact point of a switch is covered with a waterproofing sheet 7 and a terminal base 8. A tongue is provided around the terminal base 8 so as to be fitted into a groove disposed around the inner wall of the opening of the case 1. The bent portion of a contact 10 is fixed to the projection 8a of the terminal base 8 in a mutual contact state, and this, the curved portion thereof at the other end is slidably constituted. This facilitates assembly and reduces the number of processes, thereby enhancing assembling workability and slidability and preventing any adverse influence caused by vibration or impact.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of the Invention] The present invention relates to a side stand switch for detecting the stand state used when parking a two-wheeled vehicle.

[Conventional technology]

BACKGROUND ART Various types of side stand switches conventionally attached to motorcycles have been proposed, such as a mechanical contact type and a reed switch type. In a mechanical contact type side stand switch, the shaft is held in the case so that it can freely slide in the axial direction, and when the shaft is driven in the axial direction during parking, the change is converted into an open/close signal for the switch to obtain an output. ing. In addition, in a reed switch type side stand switch, a magnet is attached to a shaft that is driven when the stand is erected, and the reed switch is operated depending on the position of the magnet to obtain a switch signal.

[Problem to be solved by the invention]

However, in such a conventional mechanical side stand switch, the shaft, which is slidably held within the case, is supported at only one point, and therefore has a drawback in that its mechanical strength is weak and it is easily deformed. In addition, it has the disadvantage that it tends to malfunction due to deformation and the guide part is easily worn out. Furthermore, although there is an O-ring etc. at the opening of the case, the switch part is not completely waterproof, so
There were also disadvantages in that the contacts could corrode, causing poor contact, or the contacts could fail due to resin abrasion powder. In addition, sliding in the axial direction of the shaft applies an operating force to the switch part, but if the contactor that opens and closes the contact by this operating force holds both sides of the elastic member, it is difficult to take the necessary stroke and lacks reliability. However, there was a drawback that the overcurrent during operation was large. In order to solve this problem, if one end of the contactor is held, there is a drawback that the contactor is easily affected by vibrations and shocks. Furthermore, as shown in FIG.
3, the highly accurate actuating piece 10
3 is required, which not only tends to cause variations in characteristics (but also has the disadvantage of being prone to wear due to contact with the shaft).

In addition, side stand switches using reed switches have the disadvantage that the reed switch is easily damaged, and magnetic powder may adhere to the magnet of the side stand while the vehicle is running, resulting in malfunction.

The invention of claim 1 of the present application has been made in view of the problems of the conventional side stand switch, and its technical problem is to improve the mechanical strength of the switch.

In addition to this problem, the invention of claim 2 of the present application has a technical problem of preventing contact failure by making the switch portion airtight.

In addition to the problems of claims 1 and 2, the invention of claim 3 of the present application has a technical problem of making it possible to easily assemble the switch section of the site stand switch.

Furthermore, the invention of claim 4 of the present application, in addition to the problems of claims 1 and 2, provides a method in which the contactor, which is operated by the operating force applied to the switch section, is hardly affected by shock or vibration, and does not require a large operating force. The technical challenge is to make it possible to slide.

Furthermore, in addition to the problems of claims 1 and 2, the invention of claim 5 of the present application has a technical problem of improving the precision of operation and reducing wear without using a high-precision actuation piece. .

[Means to solve the problem]

The invention according to claim 1 of the present application is a side stand switch that holds a shaft slidably in the axial direction and opens and closes a contact by the sliding movement, the case having a guide hole at a coaxial position on opposing side walls; The device is characterized in that it is provided in a case and is opened and closed by the sliding of a shaft, and that the shaft is fitted into guide holes on both sides of the case and is slidably held.

The invention of claim 2 of the present application is a side stand switch that holds a shaft slidably in the axial direction and opens and closes a contact by the sliding movement, and the side stand switch has a case having a guide hole at a coaxial position on opposing side walls. , a switch section that is provided inside the case and opens and closes as the shaft slides; a waterproof sheet that is provided between the shaft and the switch section in the case and covers the switch section; It is equipped with an actuating piece that applies operating force to the switch part, and a cover that holds the switch part and covers the opening of the case airtight, and the shaft is fitted into the guide holes on both sides of the case and is held slidably. It is characterized by the fact that

The invention according to claim 3 of the present application is the side stand switch according to claim 2, wherein the terminal base has a plurality of tongue pieces formed around the terminal base, and the case has a groove at a position corresponding to the tongue pieces on the inner wall of the opening. This is characterized in that the tongue piece of the terminal base is fitted into the wire groove.

The invention according to claim 4 of the present application is the side stand switch according to claim 2, in which the switch part has elasticity, a bent part at one end is fixed to the terminal base, and the other end is curved and comes into contact with the upper surface of the terminal base. The device is characterized in that it includes a contactor that comes into contact with the contactor, and that the intermediate portion of the contactor is pressed by the operating force of the actuating piece to open and close the contact point.

The invention according to claim 5 of the present application is the side stand switch according to claim 2, in which the actuating piece is formed of a plate spring having one end fixed to the case and the other end having a cam portion formed by outside molding a thermoplastic resin. The leaf spring is biased in a direction perpendicular to the shaft by sliding of the shaft.

[Effect]

According to the invention of claim 1 of the present application having such features, both ends of the shaft are slidably held by the guide holes of the case. Then, by sliding the shaft in the axial direction, the contacts of the switch section are opened and closed. Further, in the invention of claim 2 of the present application, the switch part is made airtight by covering the switch part in the case adjacent to the shaft part with a waterproof sheet and providing a terminal base that airtightly covers the opening of the case. There is. Then, the axial movement of the shaft is converted into the vertical direction by the actuating piece, and the contacts of the switch part are opened and closed via the waterproof sheet. Furthermore, in the invention of claim 3 of the present application, the terminal base can be easily attached to the opening of the case by pressing and inserting the tongue piece of the terminal base into the groove provided along the opening of the case. Become. Further, in the invention of claim 4 of the present application, the bent portion of the contact is fixed to the terminal base, and the other end is brought into contact with the surface of the terminal base. Therefore, if a vertical force is applied to the contact by sliding of the shaft, the curved portion will slide on the plane of the terminal base, opening and closing the switch contact. Furthermore, in the invention of claim 5 of the present application, a plate spring is used as the actuating piece, and a cam part formed as an outsider is provided at the end of the plate spring, and the sliding movement of the shaft is transmitted to the contactor via the cam part. That's what I do.

〔Effect of the invention〕

Therefore, according to the invention of claim 1 of the present application, since the shaft of the side stand switch is held at two opposing points on the case, it is difficult to deform (and the guide length can be increased to stabilize the switch operation). This has the effect of being able to.

Furthermore, since the guide length can be made longer, wear and deformation are reduced, making it possible to eliminate return failures.

According to the invention of claim 2 of the present application, in addition to this effect, the switch section is covered with the waterproof sheet and the terminal base, so that even if water or dust enters the shaft, the switch section will not be protected from them. Since the switch is prevented from entering the switch, there is no fear of environmental changes or corruption, and the switch can be highly reliable.

Furthermore, since wear particles do not affect the switch contacts, it is possible to extend the life of the switch.

Furthermore, according to the invention of claim 3 of the present application, in addition to this effect, since the terminal base provided in the opening of the case of the side stand switch is inserted into the opening of the case, the sealed structure is facilitated and assembly work efficiency is improved. can be improved.

Furthermore, by covering the connecting portion of the terminal base with the filling portion, a sealed structure can be achieved.

Furthermore, in the invention according to claim 4 of the present application, one end of the contactor is fixed and the other curved end is brought into contact with the terminal base, so that the contactor can be made strong against vibrations and shocks. Moreover, it becomes possible to take a sufficient necessary stroke of the switch, and reliability can be improved.

Furthermore, in the invention of claim 5 of the present application, a plate spring having a cam portion made of outside molded thermoplastic resin at one end is used as the actuating piece, and because of its simple structure, it can be stabilized without increasing the accuracy of the actuating piece. It becomes possible to obtain the characteristics. Further, since the mold is easy, the leaf spring can be constructed at a low cost, and since the rubber is not directly pressed with metal, wear can be reduced.

[Explanation of Examples]

Fig. 1 is an assembled configuration diagram of a side stand switch according to an embodiment of the present invention, Fig. 2 is a central vertical sectional view thereof, Fig. 3 is a sectional view taken along the line A-A, and Fig. 4 is a sectional view taken along the line B-B. It is a diagram. As shown in these figures, the side stand switch according to this embodiment has fixing parts 1a and 1 for screwing at both ends.
We have case 1 with b. The case 1 is provided with guide holes 1c and ld at opposing positions on both sides in the longitudinal direction. The shaft 2 and the spring 3 are inserted between the guide holes 1c and ld. One end of the shaft 2 is provided with a flat plate part 2a that receives a pressing force, and a notch 2b is formed in the middle thereof so that the protrusion of the plunger 4 can be engaged therewith. As shown in FIGS. 1 and 4, the plunger 4 is a flat plate 4a facing each other and having one end formed in a substantially U-shape.
, 4b, and a protrusion is formed at a position corresponding to the notch 2b of the shaft 2, and is configured to move integrally with the shaft 2. Further, as shown in FIG. 2, the bottom surface of the plunger 4 has a depression 4C formed along the axis in the center thereof. Further, a slide base 5 having the same size as the opening of the case l is attached below the plunger 4. The slide base 5 has a substantially rectangular shape, has a rectangular opening in the center, and has a rectangular protrusion formed in a predetermined portion of the bottom surface thereof. A notch 5a is provided at one end of the bottom surface of the slide base 5 for holding a leaf spring 6, which is an operating piece. One end of the leaf spring 6 is held between the notch of the slide base 5 and the waterproof sheet 7, and the other end is made of thermoplastic resin with excellent sliding properties such as polyacecool resin (POM). Molded cam part 6
It constitutes a. A waterproof sheet 7 is provided below the leaf spring 6 to cover the opening of the case 1 as shown in the figure.

The waterproof sheet 7 has a recess at a position corresponding to the protrusion on the bottom surface of the slide base 5, and is integrally attached to the slide base 5, and a thick portion 7a is formed on the bottom surface at a position corresponding to the cam portion 6a of the leaf spring 6. It is formed. A terminal base 8 is attached below the waterproof sheet 7. The terminal base 8 has a rectangular frame formed in the center, and a projection 8a is provided at a position slightly away from the center perpendicular to the longitudinal direction. A fixed contact 8b is formed in the center of the terminal base 8, and an electrode is connected to the outside of the case. Further, tongue pieces 9a to 9d are provided at predetermined portions around the terminal base 8. These tongue pieces 9a to 9d are attached to the inner wall of the opening of the case 1.
A groove is formed at a position corresponding to . Now, a contact 10 is provided on a protrusion 8a at the center of the terminal base 8. As shown in Fig. 1, the contact lo is 90 mm at two points at one end.
It has a bent part tOa which is bent at an angle of 10°, and a curved part 10b which is slightly curved at two places on the other end, and the bent part 10a is crimped at the position where it abuts against the protrusion 8a of the terminal base 8. Fixed by The contactor 10 is configured such that when the center portion 10c thereof is pressed, the curved portion fob at the other end slides on the surface of the terminal base 8. The fixed contact 8b on the terminal base 8 and the contact lO constitute a switch section.

Next, the operation of this embodiment will be explained. Normally, the shaft 2 and plunger 4 are pressed by a spring 3 within the case 1, so that the plunger 4 is stopped at a position where the side surface of the plunger 4 comes into contact with the inner wall of the case 1, as shown in FIG. At this time, the cam portion 6a of the plate spring 6 does not enter into the recess 4C on the bottom surface of the plunger 4, but contacts the end thereof. Then, the leaf spring 6 becomes flat and presses against the waterproof sheet 7. Therefore, the contact 1 is inserted through the thick part 7a of the waterproof sheet 7.
0 is pressed, and the contact I
O contacts the fixed contact 8b on the terminal base 8, and the contact is closed.

Now, as shown in FIG. 2, when the shaft 2 is pressed in the direction of arrow C, the shaft 2 and the plunger 4 slide inside the case 1 against the spring force of the spring 3 and move to the right. Then, the leaf spring 6 is pressed through the waterproof sheet 7 by the elastic force of the contactor 10.

Therefore, the cam portion 6a of the leaf spring 6 enters into the recess 4C on the bottom surface of the plunger 4, and the leaf spring 6 curves upward. Therefore, the contactor 10 returns to the state shown in FIG. 1, and the fixed contact 8b provided on the terminal base 8
The contact will stop and the contact will be opened. Such switch contact signals are transmitted to the outside via lead wires.

Now, in the side stand switch of the present invention, guide holes 1c and ld are provided on both sides of the case l, and a shaft 2 is inserted between them.
Since the plunger 4 and the plunger 4 are slidable and are not particularly waterproofed, water, dust, etc. may enter the case 1 depending on the usage conditions. However, even if water or dust gets in, it can be easily discharged from the other guide hole and will not damage the operation of the switch. The contacts of the switch are covered by the waterproof sheet 7 and the terminal base 8, so they are not affected by water, etc. (Even if dust is generated due to friction, it will hardly affect the contact operation. A tongue piece is provided around the periphery, and the tongue piece is fitted into a groove provided around the inner wall of the opening of the case 1 as shown in Figs. 2 to 4. Therefore, assembly is facilitated.
Since the number of man-hours is reduced, assembly work efficiency can be improved. Furthermore, by covering the terminal base 8 with epoxy resin or the like, an airtight structure can be easily achieved.

Furthermore, the bent portion 10a of the contact IO is fixed in contact with the protrusion 8a of the terminal base 8, and the curved portion 10b at the other end is configured to be slidable, so that the contact IO comes into contact with the upper surface of the terminal base 8. This makes it possible to easily slide, prevent overcurrent during operation from becoming unnecessarily large, and make it less susceptible to vibrations and shocks. Furthermore, since friction is reduced, generation of abrasion powder can be reduced.

[Brief explanation of the drawing]

Fig. 1 is an assembled configuration diagram of a side stand switch according to an embodiment of the present invention, Fig. 2 is a longitudinal sectional view at the center thereof, Fig. 3 is a longitudinal sectional view taken along the line A-A, and Fig. 4 is a longitudinal sectional view taken along the line B-B. FIG. 5 is a diagram showing the shaft and actuating piece of a conventional side stand switch. 6------Spring 6 a---One cam part 7---
--Waterproof sheet 7 a---One thick part 8-
----Terminal base 8 a ---- Central protrusion
9 a ~ 9 d---Tongue patent applicant Tateishi Electric Co., Ltd. Agent Patent attorney Kanki Okamoto (and one other person)

Claims (5)

[Claims] (1) A side stand switch that holds a shaft slidably in the axial direction and opens and closes a contact by the sliding movement, a case having a guide hole coaxially located on opposing side walls; provided in the case; A side stand switch, comprising: a switch section that opens and closes by sliding of the shaft, wherein the shaft is fitted into guide holes on both sides of the case and is slidably held. (2) A side stand switch that holds a shaft slidably in the axial direction and opens and closes a contact by the sliding, a case having a guide hole coaxially located on opposing side walls; provided in the case; a switch section that opens and closes as the shaft slides; a waterproof sheet provided between the shaft and the switch section in the case and covering the switch section; and a switch section that opens and closes as the shaft slides; It comprises an actuating piece that applies an operating force to the switch part, and a base that holds the switch part and airtightly covers the opening of the case, and the shaft is fitted into guide holes on both sides of the case and slides. A side stand switch characterized by being held freely. (3) The terminal base has a plurality of tongue pieces formed around it, and the case has a groove provided on the inner wall of the opening at a position corresponding to the tongue pieces, and the tongue piece of the terminal base is inserted into the groove. 3. The side stand switch according to claim 2, wherein the side stand switch is made to fit together. (4) The switch section has elasticity and includes a contactor whose one end bent part is fixed to the terminal base and whose other end is curved and comes into contact with the upper surface of the terminal base, and the actuation piece Claim 2 characterized in that the contact is opened and closed by pressing the intermediate portion of the contact with an operating force of
Side stand switch as shown. (5) The actuating piece includes a leaf spring having one end fixed to the case and the other end having a cam portion formed by outside molding a thermoplastic resin, and the actuating piece moves in a direction perpendicular to its axis by sliding on the shaft. 3. The side stand switch according to claim 2, wherein said plate spring is biased to energize said leaf spring.