JP3286338B2 - Brake mechanism for traveling vehicles - Google Patents

Abstract

PURPOSE:To provide a brake mechanism which allows a travelling vehicle to travel at an optimal speed controlled by an operator at a long distance from the vehicle issuing a start or stop signal using a remote control device, to stop gradually at an optimally controlled speed when it is stopped by a stop signal from the operator or travelling road, and to stop quickly when an emergency stop state occurs. CONSTITUTION:When the rotation of a brake cam 52a causes a brake actuator 53 to be rotated, a cam ball 49 fitted in a hole between the brake actuator 53 and a brake case 39 is pushed out of the hole to cause the brake actuator 53 to press braking friction plates 50, 54 to control a brake shaft 46. A disc spring 51 is installed between the braking friction plates 50, 54 and the inner face of the brake case 39.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traveling vehicle brake mechanism for starting and stopping by an electric signal.

[0002]

2. Description of the Related Art Conventionally, a technique relating to a brake mechanism of a traveling vehicle has been known. However, most of the conventional brake mechanisms perform a braking operation by depressing an operator's brake pedal or the like, and the operator adjusts a braking force or a speed by adjusting a pedal depression degree. .

[0003]

SUMMARY OF THE INVENTION According to the present invention, a vehicle is controlled at an optimum speed by controlling the speed of the vehicle by issuing a stop signal by a radio control device at a remote location. When stopping by a stop signal or a stop signal from the traveling road, stop at a slow optimal braking speed, and if an emergency stop state occurs,
An object of the present invention is to provide a brake mechanism for a traveling vehicle that performs a sudden stop at a stretch.

[0004] When a device for applying emergency braking is required, a separate configuration is required. However, in the present invention, the emergency braking solenoid is supported integrally with the normal braking arm. Thus, the support configuration is simplified. In addition, the outer receiver of the brake wire connected to the brake device for performing the mechanical braking is integrally fixed to the outer receiver of the speed change wire connected to the transmission for shifting, thereby simplifying the structure. It is designed to work. In addition, when performing normal braking, slow braking must be operated by an operator pedal, which is difficult. However, in the present invention, braking can be mechanically performed by a brake actuator.

[0005]

The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described. In the first aspect, the braking and release of the brake is performed by rotating the normal braking arm 33 by expansion and contraction of the motor actuator 37, and integrally rotating the emergency braking arm 38 engaged with the normal braking arm 33. In the case of a normal stop / start operation by operating the brake wire 44 connected to the emergency braking arm 38, the engagement between the normal braking arm 33 and the emergency braking arm 38 is released, and the emergency braking arm 38 is released.
In the configuration provided with an emergency braking operation in which only the emergency brake arm 38 is rotated and the brake wire 44 connected to the emergency braking arm 38 is operated, regardless of the telescopic position of the motor actuator 37, the emergency braking signal and the normal braking arm 33 An emergency braking spring 32 and an emergency braking solenoid 30 for disengaging the arm 38 and operating the brake wire 44 to the braking side are provided. The emergency braking spring 32 is locked on the side of the emergency braking arm 38, and the emergency braking solenoid is provided. 30 is fixedly supported on the normal braking arm 33.

According to a second aspect of the present invention, in the brake mechanism for a traveling vehicle according to the first aspect, a wire receiving bracket 43 is fixed to a brake case 39 attached to a side surface of the transmission case M. The outer receiver 42 of the brake wire 44 and the speed change wire 26
The outer receiver 41 is integrally fixed.

According to a third aspect of the present invention, there is provided the brake mechanism for a traveling vehicle according to the second aspect, wherein the brake actuator 53 is rotated by the rotation of the brake cam 52 a, and the brake actuator 53 is moved between the brake actuator 53 and the brake case 39. The cam ball 49 fitted in the teardrop hole is pushed out of the teardrop hole, and the brake actuator 53 is moved to the braking friction plate 50.
In the configuration for pressing the brake shaft 54 to brake the brake shaft 46, a disc spring 51 is interposed between the braking friction plates 50 and 54 and the inner surface of the brake case.

[0008]

Next, the operation will be described. In order to apply emergency braking, an emergency braking solenoid is required, and it is necessary to support the emergency braking solenoid.In the present invention, however, the emergency braking solenoid is attached to a portion of a normal braking arm used when performing normal braking. They are integrally supported to facilitate assembly and have a simple configuration. In addition, a shift wire receiving portion for performing a shift in the transmission case is provided in addition to a brake wire outer receiving portion for performing the mechanical braking, thereby simplifying the wire receiving components. . Further, in such a brake mechanism, it is impossible to expect the adjustment of the operating force of the operator's pedal even when performing normal braking. However, in the present invention, a disc spring is interposed in the braking friction plate. As a result, a gentle braking operation can be performed even though the brake actuator is mechanically operated.

[0009]

Next, an embodiment will be described. FIG. 1 shows a shift lever 27 and a shift wire 26 disposed at the rear of the traveling vehicle of the present invention.
FIG. 2 is a plan view of a portion of the transmission case M, and FIG. 2 is a plan view of a state in which the motor actuator 37 of the brake operation mechanism disposed at the top of the transmission case M is the most reduced, and the emergency braking spring 32 is also completely reduced. 3 is a side view of the brake operation mechanism and the transmission case M, and FIG.
FIG. 5 is a plan view showing a support state of the emergency braking solenoid 30 and the normal braking arm 33, and FIG.
6 is a plan sectional view of the transmission case M and the brake case 39, FIG. 7 is a side view of the transmission case M and the brake case 39, and FIG. 8 is an enlarged view of the interior of the brake case 39. FIG. 9 is an overall side view of the traveling vehicle of the present invention.

As shown in FIG. 9, in this embodiment, a golf cart that can be driven wirelessly and can be boarded is shown. In this configuration, the operator can operate the start / stop switch of the wireless control box even when the operator gets on the running vehicle, and the start / stop can also be performed by operating the start / stop pedal provided on the seat part. You can. In addition, at a location remote from the traveling vehicle, radio-controlled ball
It is a matter of course that the unmanned start can be stopped by operating the box switch.

In FIG. 1, an engine E is provided below a seat.
, And a fuel tank T is disposed on the left side thereof, and a shift lever 27 is disposed on the left side of the fuel tank T. The speed change lever 27 operates forward and backward by sliding a speed change gear in the transmission case M. However, this operation is usually hardly performed.
It is operated only in special cases such as when a running vehicle is taken out of the garage or stored in the garage. The operation of the speed change lever 27 is transmitted to the speed change gear in the transmission case M by the speed change wire 26. The outer receiver 41 of the speed change wire 26 is connected to a wire support provided on the brake case 39 on the side of the transmission case M. Bracket 4
It is fixed to 3. The outer bracket 42 of the brake wire 44 also protrudes from the wire receiving bracket 43. The specific configuration of the wire receiving bracket 43 and the outer receivers 42, 41 is an enlarged side view in FIG.

Next, the configurations of the transmission case M and the brake case 39 will be described with reference to FIGS. The transmission case M is composed of left and right split missions.
31 is protruding. An input shaft 47 projects from the right side of the transmission case M, and a forward / reverse speed change mechanism is configured between the input shaft 47 and the brake shaft 46.
The forward gear 55 and the reverse gear 56 are selectively engaged with the brake shaft 46 by sliding the speed change sliding body 57 to perform forward / reverse shift. The shifting arm 2 for operating the shifting sliding body 57
5, protrudes from the front of the transmission case M as shown in FIG. The speed change wire 26 of FIG. 1 described above is connected to the speed change arm 25.

A spacer brake case 48 is interposed on the left side surface of the transmission case M, and a brake case 39 is fixed to the outside thereof. A disc spring 51 constituting a main part of the present invention is interposed in the spacer brake case 48. The above-mentioned wire receiving bracket 43 is fixed to a flat portion on the upper surface of the brake case 39.

Next, the details of the brake mechanism of the present invention will be described with reference to FIG. A shaft-side braking friction plate 50 is engaged with a portion where the brake shaft 46 projects into the spacer brake case 48. A case-side braking friction plate 54 is interposed between the shaft-side braking friction plate 50 and the outer peripheral portion thereof alternately. The case-side braking friction plate 54 is a spacer brake case 4.
The projection 8 is engaged with the projection 8 and cannot be rotated.
A donut-shaped disc spring 51 is inserted into the disc spring insertion groove 48 a formed in the spacer brake case 48, and is brought into contact with the inner surface of the innermost case-side braking friction plate 54. Since the disc spring 51 is interposed,
Even if the brake actuator 53 starts the pressing operation,
At first, since the braking friction plates 50 and 54 are pressed and sandwiched between the brake actuator 53 and the disc spring 51, the braking force is weak and a slow braking state can be obtained. When the disc spring 51 bends and is pushed into the disc spring insertion groove 48a and the case-side braking friction plate 54 starts to contact the inner surface of the spacer brake case 48, the braking force rises sharply. is there.

The brake arm 40 rotated by the brake wire 44 rotates the brake cam shaft 52,
The brake cam 52a at the inner end of the brake cam shaft 52 is
By engaging with the brake actuator 53, the brake actuator 53
It turns inside. A tear drop hole is formed in the brake actuator 53, and a tear drop hole is also formed inside the brake case 39 at a position opposite to the tear drop hole. A cam ball 49 is placed between the teardrop holes. When the brake actuator 53 is rotated by the brake cam 52a, the positions of both teardrop holes are shifted,
The cam ball 49 is pushed out, and the brake actuator 53 is pushed out in a direction to press the shaft-side braking friction plate 50.

When the brake actuator 53 first presses, the disc spring 51 only bends, and the braking force acts slowly. By enabling this state, it becomes possible to control the traveling speed of the unmanned traveling vehicle.

Next, a brake mechanism for an unmanned vehicle will be described with reference to FIGS. Although a start / stop pedal is provided, the rotation operation of the pedal is also changed to an electric signal, and the motor actuator 37 and the emergency braking solenoid 30 are operated. Actually, only two forces of the motor actuator 37 and the emergency braking spring 32 operate the brake wire 44 finally. Then, in the case of a normal start / stop signal, an operation of expanding and contracting the motor actuator 37 is performed. The motor actuator 37 expands and contracts by the rotation of the motor, and normally rotates the braking arm 33 right and left at a constant speed.

Therefore, the rotation speed of the normal braking arm 33 is the same when starting and stopping, and the starting and stopping of the running vehicle is performed slowly. The motor actuator 37
Has its left end pivotally supported by a pivot 58 on the bracket 28, and can normally expand and contract following the rotation of the brake arm 33. An engaging pin arm 35 is pivotally supported at the tip of the normal braking arm 33, and an engaging pin 34 projects upward from the engaging pin arm 35. The engaging pin 34 is disposed so as to be able to engage and disengage with the engaging projection 59 of the emergency braking arm 38.

Since the engagement pin 34 is engaged with the engagement projection 59 of the emergency braking arm 38, the expansion / contraction force of the motor actuator 37 is reduced from the normal braking arm 33 via the engagement pin 34 to the emergency braking arm. 38. When the emergency braking arm 38 rotates about the pivot shaft 36, the expansion and contraction force of the motor actuator 37 is transmitted to the brake wire 44. By the operation of the emergency braking solenoid 30, the engagement pin arm 35 rotates from the state shown by the dashed line in FIG. 2 to the position shown by the solid line, and the engagement state between the engagement pin 34 and the emergency braking arm 38 is released. As a result, the emergency braking arm 38 can freely rotate, and by the contraction force of the emergency braking spring 32, rotates at once about the pivot shaft 36, pulls the brake wire 44, and applies emergency braking.

In the present invention, the emergency braking solenoid 30 for performing the emergency stop is supported by a solenoid bracket 60 projecting from the normal braking arm 33.
The structure of the solenoid bracket 60 and the normal braking arm 33 is shown in detail in FIG.

[0021]

As described above, the present invention has the following advantages. The normal braking arm 33 is rotated by the expansion and contraction of the motor actuator 37 for braking and releasing the brake.
The emergency braking arm 38 engaged with the emergency braking arm 38 is integrally rotated to operate the brake wire 44 connected to the emergency braking arm 38 in a normal stop / start state.
3 is disengaged from the emergency braking arm 38, only the emergency braking arm 38 is rotated, and the brake wire 44 connected to the emergency braking arm 38 is operated to provide emergency braking. The emergency braking spring 32 and the emergency braking solenoid 30 for disengaging the normal braking arm 33 and the emergency braking arm 38 by the emergency signal and operating the brake wire 44 to the braking side regardless of the telescopic position of the emergency braking are provided. The spring 32 is an emergency braking arm 38
, And the emergency braking solenoid 30 is fixedly supported on the normal braking arm 33, so that the emergency braking mechanism and the normal braking mechanism can be configured and arranged in the same traveling vehicle brake mechanism. It is. Further, since the emergency braking solenoid 30 is fixedly supported on the normal braking arm 33, there is no need to separately provide a member for supporting the emergency braking solenoid 30. Further, an emergency braking arm 38 that rotates integrally with the normal braking arm 33 is provided, and braking is performed via a brake wire 44 coupled to the emergency braking arm 38. It became possible to use it for both emergency braking.

[0022] As claimed in claim 2, the brake case 39 that is attached to the side surface of the transmission case M, fixedly the wire receiving bracket 43, to the wire receiving bracket 43, an outer rest 42 of the brake wire 44, shift Wire 26
Of the transmission wire 2 is fixed at the same time.
Outer receptacles 41 and 42 for 6 and brake wire 44
Can be projected from the same wire receiving bracket 43, and the configuration can be simplified.

According to the third aspect, the rotation of the brake cam 52a causes the brake actuator 53 to rotate, and the cam ball 49 fitted into the teardrop hole between the brake actuator 53 and the brake case 39 is moved from the teardrop hole. The brake actuator 53 is pushed out and the brake friction plate 50
In the configuration in which the brake 54 is pressed to brake the brake shaft 46, the disc spring 51 is interposed between the braking friction plates 50 and 54 and the inner surface of the brake case. The sudden braking state that occurs when the braking operation is performed by rotating the brake arm 40 during the first time is increased by initially increasing the braking force while flexing the disc spring 51, thereby smoothly applying the braking, Adjustments can be made.

[Brief description of the drawings]

FIG. 1 is a plan view of a transmission lever 27, a transmission wire 26, and a transmission case M arranged at the rear of a traveling vehicle according to the present invention.

FIG. 2 is a plan view showing a state in which a motor actuator 37 in a portion of a brake operation mechanism disposed on an upper portion of a transmission case M is most reduced, and an emergency braking spring 32 is also completely reduced.

FIG. 3 shows a brake operation mechanism and a transmission case M
FIG.

FIG. 4 shows an emergency braking solenoid 30 and a normal braking arm 33
FIG.

FIG. 5 is an enlarged side view of a part of a wire receiving bracket 43.

FIG. 6 is a plan sectional view of a transmission case M and a brake case 39;

FIG. 7 is a side view of a transmission case M and a brake case 39;

8 is an enlarged sectional plan view of the inside of a brake case 39. FIG.

FIG. 9 is an overall side view of the traveling vehicle of the present invention.

[Explanation of symbols]

 M Transmission case 26 Shift wire 30 Emergency braking solenoid 32 Emergency braking spring 33 Normal braking arm 38 Emergency braking arm 39 Brake case 41, 42 Outer receiving 43 Wire receiving bracket 44 Brake wire 50 Shaft side braking friction plate 51 Belleville spring 54 Case side control Dynamic friction plate

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F16D 55/38 A63B 55/08 B60T 7/02 F16D 65/22 F16D 65/34 F16D 65/30 B60T 13 / 74 B60T 7/16

Claims (3)

(57) [Claims] An emergency brake arm (3) engaged with the normal brake arm (33) by rotating the normal brake arm (33) by expansion and contraction of a motor actuator (37).
8 is integrally rotated to operate the brake wire 44 connected to the emergency braking arm 38 for normal stop / start, and the normal braking arm 33 and the emergency braking arm 38 are disengaged from each other. In a configuration provided with an emergency braking case in which only the braking arm 38 is rotated and the brake wire 44 connected to the emergency braking arm 38 is operated, regardless of the telescopic position of the motor actuator 37, the emergency braking signal 33 And the emergency braking arm 38 is disengaged,
Emergency braking spring 3 for operating brake wire 44 to the braking side
2 and an emergency braking solenoid 30 are provided.
Reference numeral 2 denotes a braking mechanism for a traveling vehicle, wherein the emergency braking solenoid 38 is fixed to the side of the emergency braking arm 38, and the emergency braking solenoid 30 is fixedly supported on the normal braking arm 33. 2. A brake mechanism for a traveling vehicle according to claim 1, wherein a wire receiving bracket 43 is fixed to a brake case 39 attached to a side surface of the transmission case M,
A brake mechanism for a traveling vehicle, wherein an outer receiver 42 for a brake wire 44 and an outer receiver 41 for a speed change wire 26 are integrally fixed to the wire receiving bracket 43. 3. The brake mechanism for a traveling vehicle according to claim 2, wherein the rotation of the brake cam 52a causes the brake actuator 53 to rotate, and a tear drop hole between the brake actuator 53 and the brake case 39 is provided. Is pushed out from the teardrop hole, and the brake actuator 53 presses the braking friction plates 50 and 54 to brake the brake shaft 46.
A brake mechanism for a traveling vehicle, wherein a disc spring 51 is interposed between an inner surface of the brake case and the inner surface of the brake case.