JPH04232159A - Foot type parking brake - Google Patents

Abstract

PURPOSE:To confirm brake application audibly even in a foot type parking brake by emitting a high quality sound which is not a sound offensive to the ear like grinding noise from a ratchet type brake and does not impair the environment in a car. CONSTITUTION:In a foot type parking brake in which the rotation of a brake pedal 3 is locked by a coil spring 4 mounted on a shaft part of the brake pedal, a sound generating source which produces sound by the rotation of the brake pedal 3 is provided.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foot-operated parking brake for activating and releasing the parking brake of a vehicle such as an automobile.

0002

2. Description of the Related Art In recent years, cars equipped with automatic transmissions have adopted foot-operated parking brakes instead of manually operated parking brakes. In this foot-operated parking brake, as shown in FIG. 14, the coil spring 4, which is integrated with the brake pedal 3 and is closely fitted to the core metal at the pivot point of the brake pedal 3, expands in diameter. The brake pedal 3 rotates together with the core metal. As a result, the brake cable 8 connected to the brake pedal 3 is pulled and the brake body (not shown) is pulled.
The brake is applied at .

When the brake pedal 3 is released from the brake pedal 3 in this state, a force is applied by a return spring (not shown) on the brake body side to return the brake pedal 3 to its original position. However, since this force acts in a direction to reduce the diameter of the coil spring 4 of the core metal, the rotation of the brake pedal 3 is locked. When releasing the parking brake,
By pulling the release cable 7, the cored coil spring 4 is expanded in diameter via the lock release member 6. That is, by expanding the diameter of the cored coil spring 4, the brake pedal 3 returns to its original position due to the action of the return spring of the brake body, and the parking brake is released.

0004

[Problems to be Solved by the Invention] However, with the above-mentioned foot-operated parking brake that locks the rotation of the brake pedal by the tightening force of a coil spring, there is no sound when the pedal is depressed, so the driver does not have to apply the brake. There was an inconvenience that it could not be confirmed by sound. On this point, with conventional ratchet-type parking brakes, a ratchet engaging sound is generated when the brake is pressed down, and the driver has the advantage of being able to confirm the braking force by the ratchet sound.
The drawback was that it produced a harsh sound. In view of these points, the present invention has been developed to provide a foot-operated parking brake that can be confirmed with the ear, and also provides a high-quality parking brake that does not harm the interior environment of the vehicle, without producing the harsh "gripping" sound that occurs with ratchet-type parking brakes. The purpose of this invention is to provide a foot-operated parking brake that emits a sound.

[0005]

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a foot-operated parking brake in which rotation of the brake pedal is locked by a coil spring provided at a pivot point of the brake pedal. It is characterized by the provision of a sound source that generates sound.

[0006]

[Operation] When the brake pedal is depressed and the brake pedal rotates, the rotation of the brake pedal activates the sound source and generates a sound, making it possible to confirm by ear whether the brake is locked or the like.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be explained in detail below with reference to the illustrated embodiment, and the same parts as those of the conventional example shown in FIG. 14 will be described with the same reference numerals. FIG. 1 is a plan view showing an embodiment of the present invention;
2 is a sectional view taken along line AA in FIG. 1, and FIG. 3 is a sectional view taken along line BB in FIG. In FIGS. 1 and 2, a support shaft 2 is fixed and protruded approximately at the center of a base 1 fixed to the vehicle body, and a cylindrical portion 3 of a brake pedal 3 is attached to the support shaft 2 of the base 1.
a is inserted in a loosely fitted state, and the brake pedal 3 rotates about this support shaft 2 as a pivot point. A coil spring 4 is tightly fitted onto the outer periphery of the cylindrical portion 3a of the brake pedal 3, and a hook portion 4 at one end of the coil spring 4
a is locked to a pin 5 that is press-fitted into the base 1 and fixed, and the hook portion 4b at the other end is brought into contact with one end of the lock release member 6. The other end of this lock release member 6 is connected to a release cable 7. Further, a brake cable 8 is connected to the tip of the cylindrical portion 3a of the brake pedal 3. In addition, when the brake pedal 3 and its cylindrical portion 3a are formed of synthetic resin, a cylindrical metal core (not shown) is attached to the outer periphery of the cylindrical portion 3a of the brake pedal 3.
The coil spring 4 may be provided integrally with the metal core, and the coil spring 4 may be closely inserted around the outer periphery of the metal core. In this case, since the brake pedal 3 can be made of synthetic resin, there is an advantage that it can be made smaller and lighter.

In FIGS. 2 and 3, reference numeral 9 denotes a fixed shaft provided at the center of rotation of the brake pedal 3 on the base 1;
A rotary plate 10 having a protrusion 13 on the outer periphery is rotatably supported on the fixed shaft 9. A hole 11 is bored in an extending portion 10a of the rotary plate 10, and a brake pedal 3 is inserted into the hole 11.
A pin 12 integrally embedded in is inserted, and the rotating plate 10 is rotated in synchronization with the movement of the brake pedal 3. In the example of FIG. 3, the rotating plate 10 has three protrusions 13a, 1
This is the case of 3b and 13c.

A resonator 14 formed of a bell body is fixed to the top of the fixed shaft 9 with a nut 15 . Also,
A collar 16 is fixed to the fixed shaft 9 located inside the resonator 14 so as not to rotate.A coil spring 17 is press-fitted into the end 16a of the collar 16, and a coil is attached to the tip of the coil spring 17. Ball 1 with press-fit portion 18a
8 is fixed, and this ball 18 is connected to the protrusion 13 of the rotating plate 10.
It is formed as a hammer body that hits the resonator 14 when it is interfered with.

Since the configuration of this embodiment is as described above,
When the brake pedal 3 is depressed counterclockwise in FIG. 1, the coil spring 4 expands in diameter (rewinds), the cylindrical portion 3a rotates together with the brake pedal 3, and the brake is applied. When the brake pedal 3 is released with the brake applied, a force is exerted to return the brake pedal 3 to its original position due to the action of the return spring of the brake body. However, the force in this direction is a force that causes the diameter of the coil spring 4 to be reduced (tightened), so the coil spring 4 locks the cylindrical portion 3a. When the cylindrical portion 3a is locked, the brake pedal 3 integrated with the cylindrical portion 3a is also locked, and the pulled-out brake cable 8 is stopped at that position, maintaining the applied state of the brake. To release the parking brake, pull the release cable 7 to rotate the lock release member 6, bring one end of it into contact with the hook portion 4b at the other end of the coil spring 4, and move the coil spring 4. All you have to do is expand the diameter. That is, when the coil spring 4 expands in diameter, the cylindrical portion 3a is unlocked, the brake pedal 3 is returned to its original position by the action of the return spring of the brake body, and the parking brake is released.

On the other hand, during the above operation, the sound source also acts as follows. When the brake pedal 3 is depressed, the rotating plate 10 is also rotated in conjunction with the pin 12. now,
When the brake pedal 3 is depressed by θ1 from the state shown in FIGS. 2 and 3 in which the brake pedal 3 is fully restored, the rotating plate 10 also rotates by θ1, and its protrusion 13a moves the ball 18 toward the fixed shaft 9. Push up to the state shown in FIGS. 4 and 5. Further, when the brake pedal 3 is depressed by θ2, the rotating plate 10 is also depressed by θ2, as shown in FIGS. 6 and 7.
Since the ball 18 is rotated by the amount of rotation, the ball 18 overcomes the protrusion 13a, moves instantaneously in the direction of the resonator 14 due to the repulsive force of the coil spring 17, and strikes the resonator 14. As a result, the resonator 14 generates sound and resonates. When the brake pedal is further depressed, the next protrusion 13b and protrusion 13c generate a similar sound in sequence. This allows you to hear how the parking brake is applied. Further, when the parking brake is released, the same noise is generated as described above since the parking brake acts in the opposite manner. At this time,
Sound is generated sequentially from the protrusion 13c to the protrusion 13a in the reverse order. Note that the quality of the sound can be changed depending on the material and capacity of the resonator 14.

FIGS. 8 and 9 show another embodiment in which one hammer body consisting of a coil spring 17 and a ball 18 is added, making the total number two, and three protrusions 13 13d,
13e and 13f were added, resulting in a total of six. According to this embodiment, the number of sounds can be increased and generated continuously. For example, protrusions 13a, 13b, 13
If the phases of the protrusions 13d, 13e, and 13f are shifted relative to c, the ball 18 moves the protrusion 13 from 13a to 13d to 13.
Since the waves are overcome continuously in the order of b → 13e → 13c → 13f, the sound is also generated continuously.

FIG. 10 shows another embodiment, in which the protrusion 1
The heights of 3a, 13b, 13c, 13d, 13e, and 13f are continuously changed. According to this embodiment, since the impact force hitting the resonator 14 changes, the loudness of the sound also changes continuously. Therefore, the degree of application of the parking brake can be confirmed by the number and loudness of the sounds.

FIGS. 11 and 12 show yet another embodiment in which a music box is used as a sound source. Components that are the same as those in the embodiment described above are given the same reference numerals and their explanations will be omitted. In FIGS. 11 and 12, the brake pedal 3 of the base 1
A lever 20 is rotatably supported on a fixed shaft 9 provided at the center of rotation, and a hole 21 is provided at one end of the lever 20.
A pin 12, which is integrally embedded in the brake pedal 3, is inserted into the hole 21, and the lever 20 is rotated in synchronization with the movement of the brake pedal 3. The upper edge of the lever 20 is formed into a sector gear 22, and the sector gear 22 meshes with a gear 23 rotatably supported on the base 1. A cylinder 24 constituting a music box is fixed to this gear 23, and a large number of barbs 25 are protruded from the circumferential surface of this cylinder 24. A comb tooth-shaped fixed scale plate 26 fixed to the fixed shaft 9 is brought into contact with this cylinder 24,
The barb 25 of the cylinder 24 becomes a fixed scale plate 26 by the rotation of the cylinder 24.
Make a sound (play music) by touching the
It is something. Note that the resonator 14 is a resonance box in this example.

That is, in this embodiment, when the brake pedal 3 is depressed, the lever 20 is engaged with the pin 12 that protrudes from the brake pedal 3, so that it rotates in synchronization with the rotation of the brake pedal 3. be done. Since the sector gear 22 and the gear 23 on the upper edge of the lever 20 are meshed with each other to form a transmission mechanism, the cylinder 24 fixed to the gear 23 is rotated by the rotation of the lever 20. When the cylinder 24 rotates, its barbs 25 touch the fixed scale board 26 one after another, producing a sound. When the brake pedal 3 is released, the movement of the brake pedal 3 is reversed to that described above, so the rotation of the cylinder 24 is also reversed, but the barb 25 sequentially touches the fixed scale plate 26 as described above, so the sound is not produced. is emitted.

FIG. 13 shows a case where an electronic sound generator is employed as a sound generation source, and a microswitch 31 that opens and closes by rotation of the brake pedal 3 is provided to open and close the electronic sound generator (not shown). . For example, a convex portion 32 is provided on the upper edge of the brake pedal 3, and the convex portion 32 opens and closes a microswitch 31 to generate an electronic sound from an electronic sound generating device. It should be noted that the above examples are illustrative and do not indicate the range.

[0017]

[Effects of the Invention] As explained above, according to the present invention, even in a foot-operated parking brake that locks the rotation of the brake pedal by the tightening force of a coil spring, noise is generated when the brake is activated and released, making it difficult to hear. Can be confirmed. What's more, it produces high-quality sound instead of the harsh sound of a ratchet type, and you can freely select the sound quality. It can also change the volume of the sound continuously and generate sounds of different pitches continuously. Therefore, it is also possible to determine the degree of brake application based on changes in the sound.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA in FIG. 1;

FIG. 3 is a sectional view taken along line BB in FIG. 2;

FIG. 4 is a sectional view of main parts showing an operating state.

FIG. 5 is a sectional view taken along line CC in FIG. 4;

FIG. 6 is a sectional view of main parts showing an operating state.

7 is a sectional view taken along line DD in FIG. 6. FIG.

FIG. 8 is a sectional view showing another embodiment.

9 is a cross-sectional view taken along the line E-E in FIG. 8. FIG.

FIG. 10 is a sectional view corresponding to FIG. 9 showing another embodiment.

FIG. 11 is a sectional view showing another embodiment.

FIG. 12 is a sectional view taken along line FF in FIG. 11;

FIG. 13 is a plan view of main parts showing another embodiment.

FIG. 14 is a plan view showing a conventional example.

[Explanation of symbols]

1 Base 2 Support shaft 3 Brake pedal 3a Brake pedal cylinder part 4 Coil spring 6 Lock release member 9 Fixed axis 10 Rotating plate 13.Protrusion 14 Resonator 17 Coil spring 18 Ball 20 Lever 24 Cylinder 25 Thorn 26 Fixed scale board 31 Micro switch 32 Convex part

Claims (4)

[Claims] [Claim 1] A foot-operated parking brake in which the rotation of the brake pedal is locked by a coil spring provided at a pivot point of the brake pedal, characterized by being provided with a sound source that generates sound by rotation of the brake pedal. Foot-operated parking brake. 2. The foot-operated parking brake according to claim 1, wherein the sound source is a resonator made of a bell. 3. The foot-operated parking brake according to claim 1, wherein the sound source is a music box. 4. The foot-operated parking brake according to claim 1, wherein the sound generation source is an electronic sound generation device.