JPH01254478A - Side stand for motorcycle - Google Patents

Abstract

PURPOSE:To stabilize a switch motion, by a method wherein a moving contact actuated in linkage with the rotation of a side stand bar and a fixed contact connecting and disconnecting electrical contact with the moving contact in a position serving as a boundary therebetween, where the bar is rotated in a given rotation angle arc, are situated to a switch to detect the rotation position of the bar. CONSTITUTION:A contact plate 17 making slide contact with fixed contacts 18a-18c is carried by a contact holder and is rotated togetherwith a side stand bar 3. When the bar 3 is positioned in a range of from a containing position to a neutral position, the contacts 18a and 18b make contact with the plate 17 and in an ON-state, and ignition is practicable. When the bar 3 is rotated to the protrusion position side from a neutral position, connection between the contacts 18a and 18b is disconnected and ignition is impracticable, the contacts 18a and 18c are brought into an ON-state, and a lamp to indicate that the bar 3 is in a protrusion state is lighted ON. Since a fixed part 11b of a rotary switch 11 is locked to a hook pin 8 and rotation thereof is regulated, a switch is reliably turned ON and OFF as long as a relative position relation between the pin 8 and a pivot bolt 5 is not changed.

Description

[Detailed description of the invention] Technical field The present invention relates to a side stand for a motorcycle.

Background technology As a side stand for motorcycles (1977-129)
A side stand shown in Japanese Patent No. 24 is known.

In the side stand disclosed in this publication, a side stand bar is rotatably attached to a bracket provided on a vehicle body frame, and a return spring is installed between the bracket and the side stand bar. The side stand bar is biased by the tension of the return spring to either a retracted position or an extended position, which is sandwiched between a neutral position, that is, a thinking point (dead center), and is stably positioned there. Twenty-two,
The retracted position refers to the uppermost position of the side stand bar, where the side stand bar is aligned with the body frame, etc., and the protruded position is the position where the side stand bar is positioned relative to the body frame so that the side stand bar supports the vehicle body. This refers to the position of the side stand bar when it is erected.

The bracket is equipped with a switch that becomes conductive only when the side stand bar is in the retracted position in order to detect the rotating position of the side stand bar.This switch is used as a switch that controls the current supply to the engine ignition circuit, and If the bar is in a position other than the retracted position, the current supply to the engine ignition circuit is cut off.

However, in the above-mentioned conventional side stand, a bush type switch with a bush rod is used as the switch, and the switch is turned on when the bush rod is pressed by the side stand bar that has reached the retracted position. If the return spring that biases the bar deteriorates over time, the biasing force of the return spring may weaken and the side stand bar may no longer be held in the retracted position where the switch is turned on, or the motorcycle may drive over a bump while driving. When the vehicle passes by, the side stand bar is swung downward from the stored position, causing the switch to turn off.

In addition, while the bushing rod of the switch moves linearly, the side stand bar rotates in the circumferential direction, so friction occurs at the contact area between the two, and consideration must be given to wear at the tip of the bushing rod.

SUMMARY OF THE INVENTION Therefore, in view of the above-mentioned circumstances, the present invention has been devised to provide an automatic system that can solve the inconvenience of turning off the switch due to deterioration of the return spring due to aging or the swinging of the side stand bar when the motorcycle passes over a step. The purpose is to provide a side stand for two-wheeled vehicles.

In order to achieve the above object, the side stand for a motorcycle according to the present invention includes a switch for detecting the rotating position of the side stand bar, a movable contact that is linked to the rotation of the side stand bar, and a movable contact that moves the side stand bar from the retracted position to the protruding position. The rotary switch is characterized in that it includes a fixed contact that connects and disconnects electrical contact with the movable contact after a rotational position that has been rotated by a predetermined rotational angle.

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

FIG. 1 shows a motorcycle to which the present invention is applied.

In this motorcycle, a plate-shaped side stand bracket 2 is fixed to a frame vibe 1 at the lower part of the vehicle side by welding. A side stand bar 3 is pivotally attached to the side stand bracket 2. As shown in FIG. 2, the upper end of the side stand bar 3 is formed into a U-shape, and the bracket 2 is inserted between them, and the bracket 2 and the bar 3 are aligned with each other by the pivot bolt 5.
The bar 3 is rotatable around the pivot bolt 5. Note that a lock nut 6 prevents the pivot 5 screwed onto the upper end of the side stand bar 3 from loosening. Further, in FIG. 1, the reference numeral 31 is a spark unit which will be described later.

The bracket 2 and the bar 3 each have a hook pin 8.9 for hooking the end of the return spring 7. The return spring 7 is a spring that biases and stabilizes the side stand bar 3 toward either a neutral position, that is, a retracted position sandwiching the thinking point (dead center), or an extended position.

A rotary switch device 11 that detects the rotational position of the side stand bar 3 about the pivot bolt 5 is
It consists of a rotating part 11a that rotates together with the bar 3 and a fixed part 11b that is fixed to the bracket 2. It has become. The switch device 11 is attached by screwing a screw 12 into the head of the pivot bolt 5, and at this time, the rotating portion 11a is attached to the two positioning protrusions 1.
3 (only the front one is shown in the figure) can be rotated together with the bar 3 by engaging it with both the front and rear end surfaces of the upper end of the bar 3, and the fixing part 11b can rotate with the U-shaped groove 15 of the bracket 2. It is fixed by engaging with a hook pin 8 provided in the.

3 and 4 show an exploded view and a sectional view of the switch device 11. The rotating part 11a that rotates together with the bar 3 of the switch device 11 is made of an insulating material and includes a contact holder 16 in which a positioning protrusion 13 is formed and a recess 16a of the contact holder 16.
The contact plate 17 is made of a conductor, and a cylindrical boss portion 16b is formed in the center of the contact holder 16.

Further, the fixed part 11b fixed to the bracket 2 of the switch device 11 has an elastic fixed contact 18a+ 18
It consists of a base 20 obtained by partially molding b + 18 c with an insulating material, and a cover 21 made of a steel plate to cover and protect the base 20. The base 20 has a U-shaped groove 15 that engages with the hook pin 8 of the bracket 2.
is formed, and a hole 20a through which the boss portion 16b of the contact holder 16 is inserted is also formed. A U-shaped groove 15 is formed in the cover 21 to match the shape of the base 20.

The screw 12 passes through the boss portion 16b of the contact holder 16 inserted into the hole 20a of the base 20 via the washer 22,
Clip groove 12aEE clip 2 provided on screw 12
3, the switch device 11 can be assembled. Note that oil seals 25.2 are provided between the base 20 and the boss portion 16b of the contact holder 16, and between the base 20 and the large diameter portion of the contact holder 16, respectively.
6 is press-fitted to maintain the liquid-tightness of the internal space in which the contact plate 17 and the fixed contacts 18a, 18b, and 18c that are in sliding contact with the contact plate 17 are disposed.

The movement of the switch device 11 configured as described above will be explained with reference to FIGS. 5(A), 5(B) and 5(C). A contact plate 17 that slides into fixed contact points 18 a, 18 b, and 18 C is supported by a contact holder 16 and rotates together with the side stand bar 3. The contact plate 17 has a substantially half-moon shape with a notch formed in a part thereof, and as shown in FIG. It is in contact with the contact plate 17, and the fixed contacts 18g and 1
8b is in a conductive state via the contact plate 17, that is, in an on state. Further, at this time, the fixed contact 18c is isolated and in an off state. When the side stand par 3 is rotated downward and reaches a position closer to the predetermined angle storage position than the neutral position, the electrical conduction between the fixed contacts 18a and 18b is maintained as shown in FIG. 5(B). The fixed contact 18c also contacts the contact plate 17, and the fixed contact 1
8a; 18b and 18c are mutually turned on via the contact plate 17. Furthermore, side stand par 3
When the fixed contact 18b is rotated downward and reaches the protruding position, the fixed contact 18b is separated from the contact plate 17 at a position closer to the predetermined angle retracted position than the neutral position of the side stand par 3 and is isolated, and is isolated from any contact. state, that is, the off state. During this time, the fixed contacts 18a and 18c are in contact with the contact plate 17, and the connection is maintained in the on state.

Note that the contact plate 17 and fixed contacts 18a and 18b
, 18c and the rotational position of the side stand par 3 depend on the shape of the contact plate 17 or the fixed contact 18.
a, 18. It can be arbitrarily changed by changing the arrangement of b and 18c.

Also, the neutral position of side stand par 3 is hook pin 8.
Since it is determined by the relative positional relationship between the pivot bolt 5 and the pivot bolt 5, the fixed part 11b of the switch device 11 attached to the pivot bolt 5 is locked to the hook pin 8 as in this embodiment, and the rotation of the fixed part 11b is As long as the relative positional relationship of the hook pin 8 to the pivot bolt 5 does not change, even if the switch device 11 is applied to a motorcycle in which the retracted position and the protruded position with respect to the pivot bolt 5 are different, the switch device 11 is always restricted. , the side stand par 3 turns on and off based on the rotation position of the side stand par 3 that has been rotated by a predetermined rotation angle from the neutral position, and is highly versatile and can be easily applied to many types of motorcycles. Applicable to

6(A) and (B), the above-mentioned switch device 11
This figure shows a circuit that cuts off the ignition of an in-vehicle engine using the following. Current is supplied to the ignition circuit represented by the ignition coil 30 and the spark unit 31 via the ignition relay 32, which functions as a normally open switch, and ignition is performed only when the ignition relay 32 is in a conductive state. The ignition relay 32 is set when the fixed contacts 18a and 18b of the switch device 11 provided on the side stand are in the on state, that is, when the side stand par 3 is within the range from the retracted position to the neutral position as shown in FIGS. 5(A) and 5(B). Or, the neutral switch 33, which is turned on when the shift position of the transmission (not shown) is 221 tral, is turned on only when the neutral switch 33 is turned on, and ignition is possible. Therefore, in a running state where the transmission is in a shift position other than neutral, if the side standper 3 is closer to the protruding position than the neutral position, the fixed contacts 18a and 18b are in the OFF state, and the neutral switch 33 is also in the OFF state. The ignition relay 32 is turned off and ignition is disabled.
This means that you will not be able to drive. In this case, as shown in FIG. 5(C), the fixed contacts 18a and 18c are turned on, so the pilot lamp 35, which indicates that the side stand par 3 is in the protruding state, lights up. Note that when the neutral switch 33 is in the on state, a pilot lamp 36 lights up to indicate that the shift position of the transmission is in neutral.

On the other hand, the starting circuit represented by the starter motor 37 for starting the engine, and the starter switch 38 and starter relay 40 that control current supply to the starter motor 37 only when the starter switch 38 and starter relay 40 are in the on state. starter relay 4, which acts as a normally open switch.
0 indicates whether the neutral switch 33 is in the on state;
Alternatively, when the clutch switch 41 and the fixed contacts 18a and 18b, which are turned on when the clutch is disengaged, are both turned on, the starter switch 38 is turned on, and then the current is supplied to the starter motor 37. It has become. In other words, side stand par 3
When the neutral switch 33 is in the range from the neutral position to the protruding position, that is, in the protruding state, the engine cannot be started unless the neutral switch 33 is in the on state. Note that the reference numeral 34 is a main switch.

The circuit shown in FIG. 6(B) replaces the ignition relay 32 of FIG. 6(A) with a transistor Qs.

Q2. This is a contactless circuit by using Q3 and resistors R, , R2. The rest of the configuration is the same as that in FIG. 6(A), so a description thereof will be omitted.

FIG. 7 shows an embodiment of the present invention different from the embodiment described above.

In the embodiment shown in FIG.
The end of 8b is made of a magnetic conductor and constitutes a so-called reed switch 43, and a magnet 45 instead of the contact plate 17 rotates with the rotation of the side stand par 3, and the side stand par 3 moves from the storage position to the neutral position. While in the retracted state, the reed switch 43 is turned on by the magnetic force of the magnet 45. Although the fixed contact 18c is omitted in the figure, the fixed contacts 18a and 1
It is also possible to provide a reed switch between 8c in the same manner as described above, so that the reed switch is turned on when the side stand par 3 is in the protruding state.

Furthermore, embodiments different from the embodiments described above are shown in FIGS. 8 to 1.
Shown in Figure 0.

In the embodiment shown in FIG. 8, focusing on the fact that the return spring 7 rotates about the hook bin 8 in conjunction with the rotation of the side stand par 3, the rotation position of the side stand par 3 is determined by the return spring 7. This is intended to be detected through the rotational position. As shown in the figure, the return spring 7 is stretched between a hook plate 46 rotatably provided on the hook bin 8 of the bracket 2 and the hook bin 9 of the side stand par 3. A rotary switch device 47 for detecting the rotational position of the return spring 7 is fitted into the hook bin 8 of the bracket 2 and positioned between the bracket 2 and the hook plate 46.

The switch device 47 is constructed as shown in FIGS. 9 and 10. That is, a boss portion 50a is formed at the center of the switch case 50 formed in a substantially cylindrical shape, and a fixed contact 18a is formed at the bottom of the switch case 50.
18b and 18c are partially molded with an insulating material. Fixed contacts 18a, 18b, 18c
A rotating contact 51 that comes into sliding contact with the switch is housed in the switch case 50. Engagement protrusions 51a and 51b are formed on the rotating contact 51, and engage with recesses 52a and 52b of the rotor 52 fitted into the switch case 50, so that the relative position between the rotating contact 51 and the rotor 52 is Rotation is prohibited. The rotor 52 is provided with a protrusion 52c that protrudes and engages with a U-shaped groove 53 formed in the hook plate 46. A spring 55 is compressed between the rotating contact 51 and the rotor 52, and the repulsive force of the spring 55 causes the fixed contacts 18a, 18 to
Appropriate contact pressure is obtained between b, 18c and the rotating contact 51.

Note that the rotor 52 and the boss portion 50a of the switch case 50
and between the rotor 52 and the outer cylindrical portion 5 of the switch case 50.
Oil seals 56 and 57 are press-fitted between the switch case 50 and the rotor 52, and the liquid in the internal space where the fixed contacts 18a, 18b, 18c and the rotating contact 51 formed by the switch case 50 and the rotor 52 are disposed. Confidentiality is ensured. Each part 51 is attached to the switch case 50. 52. 55
．． 56 and 57, the switch device 47 is assembled by fitting the E-clip 58 into the groove at the tip of the boss portion 50a. A recess 50c is formed on the bottom back side of the switch case 50 to fit into a half-moon-shaped flat part 60 provided at the base of the hook bin 8 of the bracket 2, and the switch device 47 is fitted into the hook bin 8 and attached to the bracket. 2, the switch case 50 is attached to the bracket 2.
It is fixed so that it cannot rotate. - On the other hand, since the rotor 52 is engaged with the U-shaped groove 53 of the hook plate 46 with its protrusion 52c, it is rotated with the rotation of the return spring 7, and is prevented from rotating relative to the switch case 50. The rotary contact 51, which rotates together with the rotor 52, turns on and off the fixed contacts 18a, 18b, and 18c in the same manner as explained in FIG. 5.

In the embodiment shown in FIG. 4, the switch device 11 is attached to the head of the pivot bolt 5 by screwing the screw 12 into the head of the pivot bolt 5.
As shown in FIG. 11(A), a rod-shaped portion 16d that passes through the pivot bolt 5 is formed in the contact holder 16, and a locking portion 16e that is locked to the end surface of the pivot bolt 5 is formed at the tip thereof, It is possible to fix the switch device to the pivot bolt 5 by means of the locking portion 16e. Also, Figure 11 (
As shown in FIG. 11(C), the nut 62 may be screwed onto the tip of the rod-shaped portion 16d, or as shown in FIG. 11(C),
A screw 63 may be screwed into the tip of the rod-shaped portion 16d, and an E-clip 65 may be fitted into the tip of the rod-shaped portion 16d, as shown in FIG. 11(D).

In the embodiment shown in FIG. 4, the switch device 11 is fixed to the head of the pivot bolt 5 with a screw 12, but as shown in FIG. 5a can be formed on the head of the pivot bolt 5, and an E-clip 66 can be fitted into the tip of the pivot bolt 5 to fix the switch device.

Furthermore, as shown in FIG. 13, it is also possible to use the head of the pivot bolt 5 as a switch case. In this case, a highly rigid switch case can be obtained and the number of parts can be reduced. Therefore, it is preferable.

An embodiment of the present invention different from the embodiment described above is shown in FIGS. 14 to 18.

In this embodiment, the bracket 2 of the switch device 11 is
A socket part 70 is formed in the fixing part 11b that is fixed to the connector plug 7 of the waterproof type.
1 is inserted. Sui, Tsuchi device 11
The rotating portion 11a that rotates together with the bar 3 is provided with an engagement protrusion 73 that engages with an engagement hole 72 formed at the upper end of the bar 3. Furthermore, as is clear from FIGS. 15(A), 16(A), and (B) showing the cross-sectional shape of the switch device 11, the oil seal 25 is provided with a reinforcing ring 75 made of metal.
The sealing performance is improved by suppressing deformation and crushing. Reinforcement ring 75
is formed in a flange shape extending around the outer periphery of the upper surface of the oil seal 25, and a flat notch 75a is provided in a part of the outer periphery formed in the flange shape. This reinforcement ring 75
A recess 76 is formed in the base 20 constituting the fixed portion 11b of the switch device 11 in accordance with the shape of the switch device 11. By fitting the reinforcing ring 75 into the recess 76, rotation of the oil seal 25 with respect to the base 20 is prevented. Prevented. Furthermore, the flange-shaped portion of the reinforcing ring 75 is interposed between the lower surface of the screw 12 and the base 20 when the screw 12 is tightened, and functions as a washer.

Further, the oil seal 26 provided between the base 20 and the large diameter portion of the contact holder 16 is also reinforced by a reinforcing ring 77 as shown in FIG.

Note that this oil seal 26 is attached to the base 20 as shown in FIG.
A) The protrusion 78 formed as shown on the right side is shown in FIG.
A) As shown on the left side, the oil seal 26 is fixed by caulking around the entire circumference to prevent the oil seal 26 from falling off.

In addition, in this example, as shown in FIG.
A fixed contact 18a partially molded on the base 20,
The ends of the contacts 18b and 18c facing the contact holder 16 extend in the circumferential direction. 3 movable contacts 80 instead of 17
is carried. The movable contact 80 is formed in a substantially U-shape as shown in FIG. 15(B), and is compressed by a set spring 81 with the surface on which the convex portion 80a is formed facing the fixed contacts 18a, 18b, and 18c. energized.

Further, it is desirable to prevent the screw 12 from loosening by applying an adhesive such as nylon powder to the threaded portion of the screw 12.

The other configurations and operations are the same as those of the embodiment shown in FIGS. 2 to 4, so their explanation will be omitted.

Although the switch devices 11 and 47 may be provided on either the upper surface or the lower surface of the bracket 2, as shown in FIG. It is preferable to arrange the switch device on the upper surface side (outside the vehicle body) because the bracket 2 protects the switch device from mud and pebbles thrown up by the front wheels.

As described in detail, in the side stand for a motorcycle according to the present invention, the switch for detecting the rotational position of the sidestand bar is connected to the movable contact that is linked to the rotation of the sidestand bar, and the sidestand bar is moved from the retracted position to the protruding position. This rotary switch includes a fixed contact that cuts off electrical contact with the movable contact after a rotational position that has been rotated by a predetermined rotational angle. It is possible to eliminate the inconvenience of the switch being turned off due to the swinging of the side stand bar when the motorcycle passes over a step.

[Brief explanation of the drawing]

FIG. 1 is a side view of a motorcycle to which a side stand according to the present invention is applied, FIG. 2 is a diffused exploded view of the side stand of a motorcycle according to the present invention, and FIG. 3 is a diffused exploded view of a rotary switch device according to the present invention. Fig. 4 is a partially enlarged cross-sectional view of the side stand of a motorcycle according to the present invention, Fig. 5 is a diagram showing the operation of the low-kly switch device shown in Fig. 3, and Fig. 6 is an ignition circuit and a starting circuit of an on-vehicle engine. FIG. 7 is a diagram showing a rotary switch device different from that shown in FIG.
10 is a partially enlarged sectional view of a side stand for a motorcycle according to the present invention, which is different from FIG. 4, and FIG.
1, 12, and 13 are partially enlarged sectional views of the side stand of a motorcycle according to the present invention, and FIG. 14 is a diffused exploded view of the side stand of a motorcycle according to the present invention, which is different from FIGS. 2 to 13. FIG. 15(A) is a partially enlarged sectional view of the side stand of the motorcycle according to the present invention shown in FIG. 14, and FIG. 15(B) is a perspective view showing the shape of the movable contact shown in FIG. 15(A). , Fig. 16(A) and (
B) is a plan view and a partially sectional side view of the oil seal shown in Fig. 15(A), Fig. 17 is a partially sectional side view of the oil seal shown in Fig. 15(A), and Fig. 18 is a partial sectional side view of the oil seal shown in Fig. 15(A). FIG. 3 is a schematic diagram showing the arrangement. Explanation of symbols of main parts 2...Side stand bracket 3...
・Side stand bar 5...Pivot bolt 7...Return spring 11.47...Switch device 15.53...U-shaped groove 16...・Contact holder 17...Contact plate 18a, 18b, 18cm...-Fixed contact 20
...Base 21 ...Cover 25.26, 56.57 ...Oil seal 46
...Hook plate 50 ... Switch case 51 ... Rotating contact 52 ... Rotor 55 ... Spring 60 ... Flat part 80... Movable contact applicant Honda Motor Co., Ltd.

Claims (3)

[Claims] (1) A side stand bracket provided on a motorcycle; a side stand bar pivotally connected to the side stand bracket and rotatable about the pivot portion; and a side stand bar installed between the side stand bracket and the side stand bar. A side stand for a motorcycle, comprising a return spring that stabilizes the side stand bar in either a retracted position or an extended position sandwiching the neutral position, and a switch device that detects the rotational position of the side stand bar, the switch device being A movable contact that moves in conjunction with the rotation of the side stand bar with respect to the side stand bracket, and an electrical connection between the movable contact and the movable contact at a rotation position where the side stand bar is rotated by a predetermined rotation angle from the storage position toward the protrusion position. A side stand for a motorcycle, comprising a rotary switch device including a fixed contact that connects and disconnects contact. (2) The side stand for a motorcycle according to claim 1, wherein the movable contact is carried by a rotor that rotates together with the side stand bar. (3) The side stand for a motorcycle according to claim 1, wherein the movable contact is carried by a rotor that rotates together with the spring.