JPH0323630Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a push-button switch, and particularly to a push-button switch suitable for being installed on the handlebar of a motorcycle to switch the beam of a headlight. Regarding.

(Prior Art) Generally, a slide type switch is used as a beam changeover switch for a headlight of a motorcycle, and the changeover is performed by rotating an operating knob back and forth along a handlebar grip.
However, this type of switch operation requires changing the movement of the fingers to reach the switching position on the operating knob while gripping the handle, making it difficult to operate.
There was a problem with poor operability.

In order to solve this problem, the present applicant previously filed an application for a push-button switch as shown in FIG. That is, when the push button 4 provided on the frame 3 having the bearings 1 and 2 at both ends is pressed against the biasing force of the push button spring 5, it can rotate freely between the bearings 1 and 2. A ratchet gear 7a, which rotates integrally with the rotary body 6 which is pivotally supported by the rotor 6, is rotated in one direction per tooth by a ratchet pawl 7b.
A rotating body 6 rotates together with the ratchet gear 7a, a movable contact 8 provided on one side of the rotating body 6, and a common fixed contact 9 provided on the inner side of the bearing 1 at one end.
It is configured to come into contact with and separate from the individual fixed contacts 10a and 10b.

Here, as shown in FIG. 2, one common fixed contact 9 is disposed in a concentric ring shape with the shaft hole 1a of the bearing 1 at one end. In addition, individual fixed contacts 10
A, 10b are located on the same circumference on the outer peripheral side of the common fixed contact 9, and are arranged in plural at equal intervals from each other. The individual fixed contacts 10a are for making the headlight beam strong (high), and the individual fixed contacts 10b are for making the headlight beam weak (low), and these are arranged alternately. It is set up.
Then, each time the push button 4 is pressed, the beam of the headlight alternately becomes strong (high) and weak (low), and as shown in FIG. By making temporary contact with each other, the temporary extinction of the beam that occurs when switching the beam is avoided.

(Problem to be Solved by the Invention) However, in this push button switch, an individual fixed contact 10a is provided on the inner surface of the bearing 1 at one end of the rotating body 6 to make the beam of the headlight strong (high). , an individual fixed contact 10b for making the beam of the headlight weak (low), and a common fixed contact 9 are arranged together, so the mutual spacing between these two individual fixed contacts 10a and 10b is narrowed. I had no choice but to do it. Therefore, there is a problem in durability from the viewpoint of contact wear between the movable contact 8 and these individual fixed contacts 10a and 10b.

In addition, in order to prevent the beam from disappearing temporarily, the movable contact 8 is temporarily connected to both individual fixed contacts 1 as shown in FIG.
Although the movable contact 8 is configured to contact three points, 0a, 10b and the common fixed contact 9, it is technically difficult to ensure that the movable contact 8 contacts these three points.

The present invention was devised in view of the above circumstances, and an object of the present invention is to provide a push-button switch with improved durability of fixed contacts and movable contacts.

(Means for Solving the Problems) In order to achieve the above object, the present invention includes: a frame body having bearings at both ends; a rotating body rotatably supported between the two bearings of the frame body; a push button that is removably fitted into a fitting hole provided at one end of the frame and biased in a protruding direction by a push button spring; and a push button provided at one end of the frame. a ratchet mechanism that rotates the rotary body to a predetermined angle with each pressing operation; a moderation mechanism that is provided approximately in the middle of the frame body and holds the rotary body at the rotational position; and inner bearings at both ends. The moderation mechanism includes a fixed contact provided on each side surface and a movable contact provided on a surface facing the bearings at both ends of the rotating body to make contact with and separate from the fixed contact. a moderation gear with a long axis that is coaxially rotatably provided on the frame body, a moderation spring fitted into a fitting hole in a substantially middle portion of the frame body, and a moderation spring that is biased toward the moderation gear side by the moderation spring; It is characterized by comprising a ball that engages with the teeth of a moderation gear.

(Function) When the push button is pressed, the ratchet gear of the ratchet mechanism rotates one tooth at a time in one direction, and the rotating body rotates together with this, causing the movable contact to approach and separate from the fixed contact. .

Further, the rotating body is held at the rotational position by the ball engaging with the teeth of the moderation gear of the moderation mechanism that rotates together with the ratchet gear.

(Example) Hereinafter, an example of the present invention will be described based on FIGS. 3 to 8. Reference numeral 20 in FIG. 3 is a frame body, and a fitting hole 21 into which a push button 25 is fitted is formed at one end thereof. Shaft holes 2 are provided at both ends of the frame 20.
A pair of bearings 22 and 23 having 2a and 23a are provided in a protruding manner. Screw holes 30 and 31 are provided at both ends of the lower part of the frame 20, and these screw holes 3
Screw insertion holes 26a, 26 of the support plate 26 at 0, 31
The support plate 26 is fixed to the frame body 20 by screwing together screws 26g and 26h via b. Further, by fitting both ends of the support plate 26 into a pair of holes (not shown) provided on both sides of the switch casing (not shown), the frame 20 can be fixed to the switch casing.

As shown in FIG. 4, on the inner surface of one of the bearings 22, individual fixed contacts 22b and 22c for making the beam of the headlight stronger (high) are located on a circumference concentric with the shaft hole 22a. A pair of individual fixed contacts 22b facing each other and a pair of individual fixed contacts 22c facing each other are arranged alternately at equal intervals in the circumferential direction, and are arranged symmetrically with respect to each other in the diametrical direction. There is. And a pair of individual fixed contacts 2
2b are respectively connected in parallel to the lead wires 22h via beam switching connection terminals 22e, and a pair of fixed contacts 22c are connected to the beam switching connection terminals 22f.
and the lead wire 22d via the common lead wire 22g.
This lead wire 22d is connected to a power supply circuit (not shown).

Also, on the inner surface of the other bearing 23, there is an individual fixed contact 2 for making the beam of the headlight weak (low).
3b and 23c are located on a circumference concentric with the shaft hole 23a and are arranged alternately at equal intervals in the circumferential direction, and a pair of individual fixed contacts 23b facing each other and a pair of individual fixed contacts 23b facing each other The individual fixed contacts 23c are arranged symmetrically with respect to each other in the diametrical direction. The pair of individual fixed contacts 23b are connected in parallel to the lead wire 23h via the beam switching connection terminal 23e, and the pair of individual fixed contacts 23c are connected to the lead wire 23h via the beam switching connection terminal 23f and the common lead wire 23g. It is connected in series to the wire 23d, and this lead wire 23d is connected to the power supply circuit. Furthermore, an individual fixed contact 22b on one bearing 22 side and an individual fixed contact 23b on the other side
are arranged to face each other in the same phase, and similarly, one individual fixed contact 22c and the other individual fixed contact 23c are also arranged to face each other in the same phase. both bearings 22,
A shaft 24 is installed between the shafts 23. This shaft 24 has an annular groove 24a at one end and a large-diameter head 24b at the other end.
2 from the outside through the shaft hole 22a of the other bearing 23 and into the shaft hole 23a of the other bearing 23, and by fitting the E clip 24c into the annular groove 24a, the E clip 24c is fixed between the two bearings 22 and 23. The shaft 24 has rotating bodies 27a and 27d made of discs.
are supported so that they can rotate integrally with each other.

One rotating body 27a facing one bearing 22
The fixed contacts 2 of one of the bearings 22 are located in a pair of recesses 27b formed at intervals in the circumferential direction on the outer peripheral side of the bearing 22.
A U-shaped movable contact 27e that connects 2b and 22c with each other is attached and urged toward one of the bearings 22 by a spring 27f. A pair of recesses 27 formed at an interval in the circumferential direction on the outer circumferential side of the other rotating body 27d facing the other bearing 23.
Fixed contacts 23b and 23c of the other bearing 23 are shown in c.
A U-shaped movable contact 27g that connects the two bearings to each other is attached and urged toward the other bearing 23 by a spring 27k. Furthermore, one rotating body 2
The movable contact 27e of the rotating body 7a and the movable contact 27g of the other rotary body 27d are attached so as to be offset from each other by 45 degrees in the circumferential direction. In addition, movable contacts 27e, 27
g refers to the individual fixed contacts 22b, 22c, and 2 when the rotating bodies 27a, 27d rotate within a certain angle (for example, 23 degrees) from the connection position, which will be described later.
3b and 23c, and until one movable contact reaches the connection position from the cutoff position, the other movable contact remains connected.

A ratchet gear 27i and a moderation gear 27j are connected between the rotating bodies 27a and 27d so as to be rotatable together. Ratchet gear 27i is located near push button 25. Ratchet gear 27
i is an individual fixed contact 22b, 22c, 23b, 23
A number of teeth 27q equal to the total number of c (see Figure 6)
have. Each tooth 27q has a vertical surface 27 on one side.
p, the other side is formed in a sawtooth shape with a gently sloped surface 27m. Further, the moderation gear 27j is for positioning the individual fixed contacts 22b, 22c and 23b, 23c, and the ratchet gear 27i is for positioning the individual fixed contacts 22b, 22c and 23b, 23c.
The moderation spring 2 has the same number of teeth as the normal isosceles triangular tooth profile, and is fitted into the fitting hole 20a provided approximately in the middle of the frame 20.
The ball 28a, which is urged toward the moderating gear 27j by the moderating gear 27j, engages with the grooves of the teeth of the moderating gear 27j, thereby performing positioning. Therefore, the moderation gear 27j, moderation spring 28b and ball 28a
This constitutes a moderation mechanism 28 that holds the rotating bodies 27a, 27d at the rotational positions. Frame body 20
The pushbutton 25 that fits into the fitting hole 21 has grooves 25i and 25h formed in its lower part, and the pushbutton 25 is always held by pushbutton springs 26c and 26d through these grooves 25i and 25h. Forced outward. The push button springs 26c and 26d are
They are supported by guide portions 26e and 26f of the support plate 26, respectively.

A ratchet pawl 25c is rotatably supported in one groove 25i by a shaft 25a via a washer 25f. The ratchet pawl 25c engages with the teeth 27q of the ratchet gear 27i to rotate the rotating bodies 27a, 27d at a predetermined angle in one direction. Shaft 25 of ratchet pawl 25c
In the other groove 25h, the E clip 25g is inserted into the annular groove 25b formed at the end of the groove 25a.
It is prevented from coming off by fitting. The ratchet pawl 25c is biased in one direction (in the direction of arrow C in FIG. 6) by a ratchet spring 25e, and its back portion 25d engages with the stepped portion 25j of the push button 25 to prevent it from rotating. Therefore, a ratchet mechanism 32 is constituted by the ratchet gear 27i, the ratchet pawl 25c, and the ratchet spring 25e.

The push-button switch of the present invention, assembled as shown in FIG. 7, is installed near the handlebar grip of a motorcycle, for example.

In such a configuration, when switching the beam of the headlight, the push button 25 is pressed against the push button spring 26.
When pushed down against the biasing forces of the ratchet claws 25c and 26d, the ratchet pawl 25c engages the tooth 2 of the ratchet gear 27i.
7g, and the clockwise rotation is restrained by the stepped portion 25j of the push button 25, so the rotating body 27a,
27d is rotated clockwise by one tooth, and the ball 28a of the moderation mechanism 28 is engaged with the moderation gear 27j, so that one of the movable contacts 27e and 27g is rotated by one individual The movable contact is displaced from the disconnection position in which only the fixed contacts are in contact to the connection position in which adjacent individual fixed contacts are connected to each other, and the other movable contact is displaced from the connection position to the disconnection position.

For example, an individual fixed contact 22b that makes the beam of the headlight strong (high) before pressing down the push button 25
and a movable contact 27 for connecting 22c to each other.
If the position e is at the dotted line position (blocking position) shown in FIG. , individual fixed contacts 22b, 2 that make the headlight beam strong (high)
Since it is offset by 455 degrees in the circumferential direction from the movable contact 27e for connecting the contacts 2c to each other, it is located at the position indicated by the dotted line (connection position) in FIG. At this time, the headlight beam is low. Next, after the push button 25 is pressed down, the position of the movable contact 27e is shifted by 45 degrees in the circumferential direction due to the operation of the ratchet mechanism 32 to the position shown by the solid line in FIG. The position is also shifted by 45 degrees in the circumferential direction to the position indicated by the solid line in FIG. 5 (blocking position). At this time, the beam of the headlight has been switched to strong (high).

When the push button 25 is released, the push button 25 returns to its original initial position due to the urging force of the push button springs 26c and 26d.
a, 27d are held at the rotational position by the moderation mechanism 28, so that the ratchet pawl 25c slides counterclockwise against the inclined surface 27m of the tooth 27g of the ratchet gear 27i against the biasing force of the ratchet spring 25e. It rotates and returns to its original initial position as shown in FIG.

When switching the beam of the headlamp described above, one movable contact 27e gradually slides from the cutoff position to the connection position, and the other movable contact 27g
gradually slides from the connection position to the cutoff position. At this time, one movable contact 27e reaches the connection position while the other movable contact 27g does not reach the cutoff position, and the individual fixed contacts 22b and 22c and the headlight make the beam of the headlight strong (high). Individual fixed contacts 23b and 23c that make the beam weak (low)
However, as shown in FIG. 8, they are connected at the same time, so the beam of the headlight does not disappear.

Note that the individual fixed contacts disposed on the inner surface of the bearing are located on the same circumference and are diametrically symmetrical.
It is also possible to arrange more than one pair of contacts and connect the individual fixed contacts of each pair with a movable contact.

(Effect of the invention) As described above, the present invention includes a frame body having bearings at both ends, a rotating body rotatably supported between the two bearings of the frame body, and a rotating body rotatably supported between the two bearings of the frame body, and a rotating body rotatably supported between the two bearings of the frame body. a push button that is fitted in and out of a provided fitting hole and urged in a projecting direction by a push button spring; and a push button that is provided at one end of the frame and that rotates each time the push button is pressed. a ratchet mechanism that rotates the body to a predetermined angle; a moderation mechanism that is provided approximately in the middle of the frame body and that holds the rotating body at the rotational position; and a fixing mechanism that is provided on the inner surfaces of the bearings at both ends. a contact, and a movable contact provided on a surface facing the bearings at both ends of the rotary body to contact and separate from the fixed contact, and the moderation mechanism is provided coaxially with the rotary body so as to be rotatable integrally a moderation gear having a long axis, a moderation spring fitted into a fitting hole in a substantially middle portion of the frame body, and a moderation spring biased toward the moderation gear side and engaged with the teeth of the moderation gear. The invention is characterized in that it consists of a ball that

Therefore, by combining a ratchet mechanism and a moderation mechanism, when the push button is pushed in, the ratchet gear rotates, and the ball falls from the peak to the valley of the tooth of the moderation gear that rotates together with the gear, thereby causing the push button to be pressed. Regardless of the pressing speed of the button, the rotating body is rapidly rotated, and the switching operation between the fixed contact and the movable contact is instantaneously and quickly performed. Therefore,
When the switching operation between the fixed contact and the movable contact is performed slowly, sparks are generated and its durability is reduced, but in the present invention, sparks are not generated and its durability is improved.

In addition, an individual fixed contact for making the headlight beam strong (high) and an individual fixed contact for making the headlight beam weak (low) are separated and placed on one side of both rotating bodies. By arranging this, it is possible to prevent wear and the like due to contact between each individual fixed contact and the movable contact, and the durability of the contact is improved.

In addition, by separating both individual fixed contacts, the movable contact does not come into contact with the three fixed contacts, two individual fixed contacts and a common fixed contact, as in the push button switch related to the earlier application, and a low beam At the time of switching between the high beam and the high beam, it is possible to prevent the chance of both beams disappearing at the same time, and to ensure that the beam is switched at a time when both beams are turned on at the same time.

Furthermore, since the moderation mechanism is provided, the rotating body can be reliably held at the rotational position. Furthermore, although it is equipped with a moderation mechanism, the moderation gear, moderation spring, and ball that are its constituent parts are installed within the bearings at both ends of the frame, making it compact in the axial direction. .

Furthermore, since the ball of the moderation mechanism is made to engage with the teeth of the moderation gear on the long axis, even if the relative positional relationship between the ball and the tooth of the moderation gear, which is the engagement part of the ball, is slightly shifted in the axial direction, Since there is no problem in their engagement, processing and assembly accuracy is reduced, and the moderation mechanism operates more reliably.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of the push button switch according to the prior application, FIG. 2 is a diagram showing its contact mechanism, FIG. 3 is an exploded perspective view of the push button switch according to the present invention, and FIG. A side view of the contact mechanism that makes the beam strong (high) as seen from the inside of the bearing, Figure 4B is a side view of the contact mechanism seen from the outside of the bearing, and Figure 5A makes the beam weak (low). FIG. 5B is a side view of the contact mechanism as seen from the inside surface of the bearing; FIG. 6 is a side view of the ratchet mechanism of the push-button switch in FIG. 3; FIG. 7 3 is a partially cutaway side view of the push-button switch in an assembled state, and FIG. 8 is an explanatory diagram of a state in which a high beam contact mechanism and a low beam contact mechanism are connected at the same time. 20... Frame body, 25... Push button, 3, 4, 2
2, 23...Bearing section, 22b, 22c, 23b,
23c... Fixed contact, 27... Rotating body, 27e,
27g...gear section, 28...moderation mechanism.

Claims (1)

[Claims for Utility Model Registration] 1. A frame body having bearings at both ends, a rotating body rotatably supported between the two bearings of the frame body, and a rotating body provided at one end side of the frame body. a push button that is fitted in and out of the fitting hole and urged in a protruding direction by a push button spring; a ratchet mechanism that rotates the rotating body to an angle; a moderation mechanism that is provided approximately in the middle of the frame and holds the rotating body at the rotational position; and fixed contacts that are provided on the inner surfaces of the bearings at both ends. The moderation mechanism includes a movable contact that is provided on surfaces facing the bearings at both ends of the rotary body and makes contact with and separates from the fixed contact, and the moderation mechanism has a length that is coaxially rotatable with the rotary body. A moderation gear on a shaft, a moderation spring fitted into a fitting hole in a substantially middle portion of the frame, and a ball urged toward the moderation gear by the moderation spring and engaged with the teeth of the moderation gear. A push-button switch characterized by comprising: 2. Utility model registration claim 1, characterized in that the timing at which the movable contact and the fixed contact at one end come into contact and the timing at which the movable contact and the fixed contact at the other end come into contact are slightly shifted. Push button switch.