JPH06142246A - Golf cart - Google Patents

Abstract

PURPOSE:To enable the charged state of a battery and the state of electrical fittings or the like to be properly comprehended. CONSTITUTION:The switch box 41 of a golf cart is provided with a battery voltage indicator LED 41g indicating the charged state of batteries 49 and 50, and having such a function as capable of showing the state (such as improper fitting position and failure occurrence) of a neutral position detecting switch 47b, a left turn limit switch 47c, a right turn limit switch 47d, FET in a controller, respectively via lighting on and off mode.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a golf cart used for transporting golf bags on a golf course, and more particularly to a non-passenger type golf cart which can carry two golf bags.

[0002]

2. Description of the Related Art In recent years, golf courses have been introduced with a golf cart in order to promote self-playing in order to reduce the labor of the caddy and prevent the caddy from running short. Are roughly classified into a riding type golf cart on which the passenger rides and a non-riding type golf cart having only a golf bag mounted thereon, and further, the non-riding type golf cart is a manual type golf cart that is driven by a push operation and a battery. Is roughly classified into an electric golf cart having a structure for supplying power to a drive motor for driving wheels and electric components.

[0003]

By the way, the above-mentioned conventional electric golf cart does not have a function of displaying the charge state of the battery. There was the problem of causing trouble. Further, since there is no function of displaying the presence or absence of a failure in the electrical equipment of the golf cart, there is a problem that it is necessary to inspect each part to identify the cause when the failure occurs, which is complicated.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a golf cart in which the inconveniences of the above-mentioned conventional examples are improved, and in particular the state of charge of the battery and the state of electric components can be accurately grasped.

[0005]

In order to achieve the above-mentioned object, the present invention provides a golf cart which has at least two driving wheels and one steering wheel and which can carry a plurality of golf bags. A cylindrical axle shaft casing that houses the axle shafts for the respective drive wheels via bearings, and a base end portion is fixed to both axial sides of the axle shaft casing and a tip end portion is arranged upward. A pair of side frames provided, a horizontal cross frame fixed between the upper parts of both side frames, and a lower frame arranged between the caster that pivotally supports the steered wheels and the axle shaft casing. A drive motor for rotationally driving the drive wheels, and an upper frame disposed between the caster and the horizontal cross frame, and the drive motor. Equipped with a battery for supplying electric power to the motor or the like, and displays the state of charge of the battery has a configuration which is disposed a display means for displaying the presence or absence of electrical Hinto abnormality within the same visual field.

[0006]

According to the golf cart of the present invention, a structure is provided in which the display means for displaying the charging state of the battery and for displaying the state of failure of the electrical equipment and the like mounted on the golf cart is within the same field of view. Therefore, by visually observing the display means, it is possible to accurately grasp at a glance the state of charge of the battery and the state of electrical components.

[0007]

Embodiments of the present invention will be described below with reference to the drawings.

First, the overall structure of the non-passenger type golf cart of this embodiment will be described with reference to FIGS. 5 to 7. In the golf cart 21, the front wheels, which are the steered wheels, can be electrically steered by an electric steering mechanism. , Manual (hand push) operation / electric (hand switch) operation / remote control operation /
It is possible to select 4 way operation of track running (automatic transportation) operation, two golf bags can be loaded, and left and right centering on the upper frame arranged in the center line of the traveling direction of the golf cart 21. It has a symmetrical structure.

In the golf cart of this embodiment, a battery voltage display LED for displaying the charge state of the battery and an abnormal state of the parts and limit switches in the controller is provided on the switch box arranged near the handle grip. By arranging the battery, it is possible to accurately grasp the charging state such as whether the battery is not required to be charged or required to be charged, or the state of limit switches.

The structure of the golf cart 21 will be described in detail. The golf cart 21 includes an axle shaft casing 22.
It is equipped with a left rear wheel 23 and a right rear wheel 24, which are drive wheels disposed at both ends of the inner axle shaft, and a front wheel 26, which is a driven wheel supported by a caster shaft of a caster 25.
In this case, the axle shaft is supported inside the axle shaft casing 22 by bearings (not shown) near the insides of the left rear wheel 23 and the right rear wheel 24, respectively. A left side frame 27 and a right side frame 28 are mounted in a floating state on both axial ends of the axle shaft casing 22 via a side axle casing bracket, a rear axle mount bracket, and a side axle mount rubber (not shown above). Cage,
A cross frame 29 is horizontally fixed between the side frames 27 and 28 by bolts.

From the center of the cross frame 29 to both sides,
Mounts 30 and 31 for supporting the upper portion of the golf bag G mounted on the golf cart 21 are mounted respectively, and between the center portion of the cross frame 29 and the upper end portions of both side frames 27 and 28, Bands 32 and 33 for fixing the upper portion of the golf bag G to the mounts are attached, respectively. Further, between both side frames 27, 28, auxiliary frames 34, 35 are fixed by bolts in an intersecting state. In this case, the axle shaft casing 22, the left side frame 27, the right side frame 28, and the cross frame 29 have a rectangular shape (square shape).
To make up a closed frame.

A head pipe 36 is fixed to the caster 25 supporting the front wheel 26 by bolts, and one end portion of the upper frame 37 in the axial direction and one end portion of the lower frame 38 in the axial direction are fixed to the head pipe 36. Are fixed by bolts. In this case, the strength can be improved by further welding the respective one ends of the upper frame 37 and the lower frame 38. The vicinity of the axial center of the upper frame 37 is fixed to the axial center of the cross frame 29 by a bolt via a gusset plate 56. In this case, the fixing method may be welding.

A remote control box (not shown) for remotely controlling the golf cart 21 is provided at a substantially central portion of the upper surface of the gusset plate 56 fixed to the upper frame 37 and the cross frame 29.
An antenna 39 for receiving radio waves based on the operation of is vertically provided. In this case, two remote control boxes are prepared corresponding to the number of golf bags mounted, that is, the number of players.

At the other axial end of the upper frame 37, that is, at the left and right rear wheels 23, 24, as shown in FIGS. 2 and 3, a handle grip 40 for manually operating the golf cart is provided. A switch box 41 for electrically operating a golf cart equipped with various switches described below is provided at a location near the handle grip 40 where operability is good.
Is provided. A travel switch 42 is arranged at the lower end of the handle grip 40. A power switch 41a is provided on the right side surface of the switch box 41, and a forward / backward switch 41b is provided on the first row of the upper surface.
And five battery voltage display LEDs 41g are provided, and the traveling switch 41c is provided on the second row of the upper surface for a certain period of time.
, Emergency stop switch 41d, speed adjustment volume 41
and a front wheel electric steering switch 41e is provided on the front side surface portion.

The key switch type power switch 41a is
This is for supplying power from the batteries 49, 50 to the main controller 51 of the golf cart 21, the remote control receiver / electric steering controller 52, the electric steering motor 47a of the electric steering mechanism 47 (see FIG. 4), etc. When the switch 41a is turned clockwise, the normal mode (electric running mode) is set, and when it is turned counterclockwise, the track running mode is set. The toggle-type forward / backward switch 41b is for switching the traveling direction (forward / backward) of the golf cart 21, and when the switch 41b is tilted forward, it is in forward mode, and when it is tilted forward, it is backward. It is designed to be in mode.

Push button type fixed time running switch 41c
Is for running the golf cart 21 for a certain period of time. When the switch 41c is pressed once, for example, it advances or retreats for 8 seconds and then stops. For example, when the switch 41c is continuously pressed twice, it advances or retracts for 12 seconds. Then, the vehicle is stopped and, for example, when the button is continuously pressed three times, the vehicle continuously runs.
In this case, the input of the switch 41c is effective for, for example, 1.5 seconds after the first operation, and the golf cart 21 has the switch 41c for 1.5 seconds.
The vehicle travels for a predetermined time or continuously according to the number of operations of c, and the input of the switch 41c is invalid while the golf cart 21 travels for a certain time. The push button type emergency stop switch 41d is for stopping the golf cart 21 which is running for a certain period of time, and when the switch 41d is pressed, the running golf cart 21 is stopped. In this case, the traveling switch 4
The traveling mode of the golf cart 21 can be released for a certain period of time by operating the forward / backward switch of 2 or a remote control box (not shown).

Toggle type front wheel electric steering switch 41e
Is for changing the direction of the front wheel 26, which is a steered wheel, to the right side or the left side. When the switch 41e is tilted to the right side, the front wheel 26 is changed to the right side, and when it is tilted to the left side, the direction is changed to the left side. , When returning to the neutral position, it returns to the front position. In this case, when the switch 41e is operated while the golf cart 21 is running, the vehicle turns right or left. The volume resistance type speed adjustment volume 41f is for adjusting the traveling speed of the golf cart 21 in a stepless manner. When turned to the right, it becomes high speed, and when turned to the left, it becomes low speed. . In this case, if the adjusting position of the volume 41f is the same,
The forward speed and the reverse speed are the same.

LED 4 for displaying battery voltage as a display means
1g displays the charge states of the batteries 49 and 50, and also the neutral position detection switch 47b, the left turning limit switch 47c, the right turning limit switch 47d (see FIG. 4), the state of the FET in the controller (incorrect mounting position). And the presence / absence of a failure) are displayed by turning on / off. In this case, the battery voltage display LED 41g
It is also possible to display each of the above states by blinking.

With the battery voltage display LED 41g,
A display pattern for displaying the charging states of the batteries 49, 50 is as shown in, for example, FIGS. That is, the display pattern of FIG. 1A indicates that the power switch 41a is in the ON state (always lit in the ON state), and the display pattern of FIG.
0 indicates that the battery is fully charged, and the display pattern in FIG. 1C indicates that the batteries 49 and 50 are in the required charging state. In this case, as the battery voltage rises, the LEDs on the rightmost side are turned on in sequence, and even if the leftmost LED is turned on in FIG. Good.

Further, the battery voltage display LED 41g is used to display the neutral position detection switch 47b, the left turning limit switch 47c, the right turning limit switch 47d, and the state of the FET in the controller (whether there is an incorrect mounting position or failure). The display pattern is, for example, FIG.
It is as shown in (g). That is, the display pattern of FIG. 1 (d) indicates that the mounting position of the left turn limit switch 47c is in an incorrect state or is in failure, and the display pattern of FIG. 1 (e) is the mounting position of the neutral position detection switch 47b. Indicates that it is in an illegal state or has a failure, and FIG.
The display pattern of indicates that the mounting positions of the neutral position detection switch 47b and the right turn limit switch 47d are in an incorrect state or is in failure, and the display pattern of FIG.
This shows that a short-circuit current has flowed to the FET (element that turns on / off based on the rotation direction of the electric steering motor 47a to energize the motor current) inside the remote control receiver / electric steering controller 52.

On the other hand, the double-throw momentary type traveling switch 42 is used for running / stopping the golf cart 21, and the golf cart 21 is run only while the switch 42 is being depressed, and the depression operation is performed. When the stop is stopped, the golf cart 21 stops running.

Next, the structure of the control system of the golf cart 21 will be described with reference to FIG. 4. An ON signal or an OFF signal is supplied from the power switch 41a of the switch box 41 to the main controller 51, respectively, and the golf cart 21.
An AGV (Auto Guided Vehicle) signal that causes the vehicle to orbit is supplied to the remote control receiver / electric steering controller 52. From the speed adjustment volume 41f, an instructed speed signal corresponding to the adjusted resistance value, and from the front wheel electric steering switch 41e, a right signal for changing the direction of the front wheels 26 to the right side or a left side signal for changing the direction to the left side is run for a certain period of time. The switch 41c outputs a travel signal for a certain period of time, the emergency stop switch 41d outputs an emergency stop signal, the forward / reverse switch 41b outputs a forward signal or a reverse signal, and the travel switch 42 outputs a travel signal or a stop signal. The signals are supplied to the remote control receiver and the electric steering controller 52, respectively.

An electric steering motor 47 of the electric steering mechanism 47 sends a status signal to the battery voltage display LED 41g according to the charging status of the batteries 49 and 50 (fully charged / necessary to be charged).
A motor drive control signal is supplied to a from the remote control receiver / electric steering controller 52. From the AGV sensor 46, when the golf cart 21 is running on a track, a detection signal based on the result of the sensor 46 detecting the magnetism of a magnet buried in the track underground or the low-frequency current of a cable is sent to the remote control receiver / electric motor. It is supplied to the steering controller 52.

From the neutral position detecting switch 47b for detecting whether the front wheel 26 is in the straight traveling position, the straight traveling position detection signal is sent from the left turning limit switch 47c which determines the left turning angle of the front wheel 26 from the left turning limit switch 47c. The position signal is
From the right turning limit switch 47d that determines the right turning angle of the front wheel 26, a right turning angle limit position signal is supplied to the remote control receiver / electric steering controller 52, respectively. In this case, the switches 47b, 4
7c and 47d are arranged on the lower surface of a bracket (not shown) fixed to the lower end of the head pipe 36.

The remote control receiver / electric steering controller 52 sends a command speed signal, a forward signal and a backward signal to the golf cart 21 to the main controller 51.
Supply to. The main controller 51 uses the signal to drive the motor 54, the brake mechanism, the vehicle speed sensor,
A control signal is supplied to each charger (not shown). In the main controller 51 and the remote control receiver / electric steering controller 52, an ON signal output from the power switch 41a to the main controller 51 causes
Power is supplied from the batteries 49 and 50.

On the other hand, the other end of the lower frame 38 in the axial direction is fixed to the axle shaft casing 22 by welding or bolts, while two golf bags near the one end of the lower frame 38 in the axial direction are provided. A golf bag holder 45 having mounting plates 43 and 44 for mounting the bottom portions is fixed, and the mounting plates 43 and 44 are locking members for locking the bottom side surfaces of the golf bag. 43a,
44a is integrally provided. Further, at the lower end of the golf bag holder 45, an AGV sensor 46 for detecting the magnetism of a magnet embedded in the ground or the low frequency current of a cable is fixed when the golf cart 21 is orbitally running on a cart road. ing.

In the golf cart 21, the left side frame 27, the right side frame 28, the cross frame 2
9, the axle shaft casing 22, the upper frame 37, and the lower frame 38 constitute a basic frame, and the respective frames and casings, the head pipe 36, and a battery holder 48 described later constitute the entire frame. Axle shaft casing 22, left side frame 27, right side frame 2
8. The cross frame 29 constitutes a rectangular (square-shaped) closed frame.

An electric steering mechanism 47 is fixed to the upper portion of the head pipe 36 with bolts.
When the vehicle 1 is in the electric traveling mode, the electric steering mechanism 47 performs electric steering to control the turning angle of the front wheel 26, which is the steered wheel. Inside the head pipe 36, the casters 2
The caster shaft 5 is arranged in a penetrating state, and the caster shaft is connected to the motor output shaft of the electric steering mechanism 47. As a result, the front wheels 26 are supported by the upper frame 37 via the casters 25 and the head pipe 36, and are rotated by the electric steering mechanism 47.

The left side frame 27 and the right side frame 28 are axially centered to the lower end and the lower frame 38.
A battery holder 48 is mounted in a space formed by the rear end portion of the battery 4 in the axial direction, and the battery holder 48 has, for example, two batteries 4 with a charging voltage of 12V.
9, 50 are mounted symmetrically. Battery 49,
A main controller 51 is arranged between the two 50, and a remote control receiver / electric steering controller 52 is arranged above the batteries 49 and 50. Decoding the received remote control signal from the remote control box, outputting the drive command signal based on the signal decoding to the main controller 51, the electric steering mechanism 47
The steering command signal is output to.

The axle shaft casing 22 is interposed between a left axle shaft for the left rear wheel 23 and a right axle shaft for the right rear wheel 24, which are divided, and a differential gear, a differential side gear, and a differential gear that connect the two. A gear box 53 including a pinion (not shown) is arranged, and a drive motor 54 for driving the left rear wheel 23 and the right rear wheel 24 is attached to the gear box 53. Box 53
The drive motor 54 constitutes the drive unit 55. In this case, in an emergency such as a drop in battery voltage,
By operating the clutch lever 56 of the gear box 53 to put the left rear wheel 23 and the right rear wheel 24 in a free state, the golf cart 21 can be manually (manually) operated.

When the golf cart 21 is operated by remote control, the power switch of the remote control box is turned on, and various buttons (forward / backward / turn right / turn left) are operated appropriately, and the remote control signal causes the antenna 39 to operate. Is transmitted to the remote control receiver / electric steering controller 52 via the controller 52, the controller 52 decodes the signal, outputs the drive command signal to the main controller 51, and outputs the steering command signal to the electric steering mechanism 47. Forward / backward movement of the golf cart 21,
Turning of the front wheels 26 by electric steering, traveling for a certain period of time, and emergency stop can be performed.

When manually operating the golf cart 21,
By operating the clutch lever 56 of the gear box 53,
Since the axle shafts of the left and right drive wheels 23 and 24 are released from each other, the left rear wheel 23 and the right rear wheel 24 can be set in a free state, whereby the golf cart 21 is manually advanced by the handle grip 40. / It can be moved backward.

When the golf cart 21 travels on a track, a guideway is laid in advance on a golf course such as a cart road, and a magnet or a cable is embedded in the ground along the guideway. The golf cart 21 can be driven by a magnetic induction method of inducing by magnetism or an electromagnetic induction method of inducing by applying a low frequency current to the cable. When the golf cart 21 is electrically driven by operating the switch box 41, it is as described above.

Next, the operation of this embodiment constructed as described above will be described.

Switch box 41 of golf cart 21
When the power switch 41a is turned on, the battery voltage display LED 41g lights in the display pattern shown in FIG. 1A, and is constantly lit while the power switch 41a is in the ON state. At this time, when the batteries 49, 50 mounted on the golf cart 21 are in the charge required state, the battery voltage display LED 41g lights up in the display pattern of FIG. 1 (c). When the batteries 49, 50 are charged, the LEDs on the rightmost side are sequentially turned on as the battery voltage becomes higher, and when the batteries 49, 50 are in a fully charged state, the battery voltage display LED 41g is shown in FIG.
It lights in the display pattern of (b).

On the other hand, the head pipe 3 of the golf cart 21
6 When the mounting position of the left turn limit switch 47c arranged at the lower end is in an incorrect state or fails, the battery voltage display LED 41g lights up in the display pattern of FIG. 1 (d). Further, when the attachment position of the neutral position detection switch 47b is in an incorrect state or fails, the battery voltage display LED 41g lights up in the display pattern of FIG. 1 (e).
Further, when the attachment positions of the neutral position detection switch 47b and the right turn limit switch 47d are in an incorrect state or has a failure, the battery voltage display LED 41g lights up in the display pattern of FIG. 1 (f). When a short-circuit current flows through the FET inside the remote control receiver / electric steering controller 52, the battery voltage display LED 41 is displayed.
g lights up in the display pattern of FIG.

As described above, according to this embodiment, the battery 4 is provided in the switch box 41 of the golf cart 21.
Since the battery voltage display LED 41g for displaying the state of charge of the batteries 9 and 50 and the state of the limit switches and the components in the remote control receiver / electric steering controller 52 is provided, the battery 4
Whether 9, 50 is in a fully charged state or a required charging state, a neutral position detection switch 47b, a left turning limit switch 47
c, right turn limit switch 47d, F in controller
The state of ET can be accurately grasped.

[0038]

As described above, according to the present invention,
Since the display means for displaying the state of charge of the battery and for displaying the state of the electrical components and the like is arranged within the range of the same field of view, it is possible to determine whether the battery is in a fully charged state or a required charging state. It is possible to provide a golf cart that exhibits extremely remarkable effects such as being able to accurately grasp at a glance the state of charge or the state of a failure in electrical equipment or the like.

[Brief description of drawings]

FIG. 1 is an LE for displaying a battery voltage according to an embodiment of the present invention.
The display pattern of D is shown, (a) is a figure which shows a power switch ON state, (b) is a figure which shows a battery full charge state,
(C) is a diagram showing a battery charge required state, (d) is a diagram showing a state of the left turning limit switch, (e) is a diagram showing a state of the neutral position detecting switch, (f) is a neutral position detecting switch and the right Diagram showing the state of the swing limit switch,
(G) is a figure which shows the state of FET in a controller.

FIG. 2 is a plan view showing a mounting state of operation switches of the present embodiment.

FIG. 3 is a side view showing a mounting state of operation switches of the present embodiment.

FIG. 4 is a block diagram of a golf cart control system of the present embodiment.

FIG. 5 is a left side view of the golf cart according to the present embodiment.

FIG. 6 is a rear view of the golf cart according to the present embodiment.

FIG. 7 is a plan view of the golf cart of this embodiment.

[Explanation of symbols]

21 golf cart 37 upper frame 40 handle grip 41 switch box 41a power switch 41b forward / backward switch 41c constant time running switch 41d emergency stop switch 41e front wheel electric steering switch 41f speed adjustment volume 41g battery voltage display LED 42 running switch 49, 50 battery 51 Main Controller 52 Remote Control Receiver / Controller for Electric Steering

Claims (1)

[Claims] 1. A golf cart having at least two drive wheels and one steerable wheel and capable of mounting a plurality of golf bags, wherein an axle shaft for each drive wheel is housed via a bearing. A cylindrical axle shaft casing, a pair of side frames whose base end portions are fixed to both axial sides of the axle shaft casing, and front end portions thereof are respectively arranged upward, and a pair of side frames of the both side frames. A horizontal cross frame fixed between the upper parts, a lower frame arranged between the caster that pivotally supports the steered wheels and the axle shaft casing, and arranged between the caster and the horizontal cross frame. A drive motor that rotationally drives the drive wheels, and a battery that supplies electric power to the drive motor and the like. A golf cart, characterized in that display means for displaying the battery charge status and for indicating whether or not there is an abnormality in electrical equipment is arranged within the same field of view.