JP2008269649A - Guide line sensor support device for golf car - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce a manufacturing cost of a guide line sensor support device. <P>SOLUTION: The first and second arms 22, 23, a shaft member (boss 21) and an attaching seat 28 of a tie rod 13 for connecting the arms and a steering device are integrally formed of a self-lubricating synthetic resin. The attaching seat 28 is formed in an upper side of an imaginary line connecting the second arm and the shaft member, one end part od the tie rod 13 is attached to the attaching seat 28 from its upper side, and an attaching seat 30 for attaching a cable holder is formed between the attaching seat 28 and the shaft member in the first arm 22. an attaching bracket 36 for a rear-end collision preventive sensor 35 is integrally formed in an end part of a vehicular body front side in the second arm. cables 35a, 12a of the rear-end collision preventive sensor 35 and a guide sensor 12 are bundled in a front end part of the first arm by a band 38, are stored into one cable storage tube 39, and are held by the cable holder 29 attached to the attaching seat 30. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a golf car that can automatically travel along a guide line of a travel path, and more particularly to a support device for a guide line sensor of a golf car that supports a guide line sensor that detects the guide line.

  A conventional golf car of this type is disclosed in, for example, Japanese Patent No. 3224883. The golf car shown in this publication is configured to be able to adopt a manual traveling form in which the driver travels while steering the steering wheel and an automatic traveling form in which the traveling path is automatically traveled by remote control. ing. In this automatic travel mode, the steering device is controlled so that the vehicle body travels along a guide line embedded in the travel path.

  In the automatic traveling mode, the steering device is driven by a motor, and the steering direction and the steering amount are controlled by feedback control so that the vehicle body passes over the guide line. In this feedback control, the guide line is detected from above by three guide line sensors provided in a line in the vehicle width direction at the front end of the vehicle body, and the center guide line sensor among these guide line sensors This is done by controlling the motor so that it passes directly over the guide wire.

  The guide wire sensor is supported by a guide wire sensor support device that is swingably supported by the body frame in the left-right direction. This guide wire sensor support device is a shaft member that is pivotally supported in a state where the rotation axis is directed in the vertical direction at the center portion in the vehicle width direction at the lowest position of the front end portion of the vehicle body frame, A first arm that extends forward from the shaft member to the front of the vehicle body, a second arm that extends from the front end of the first arm in both the left and right directions, and a link that connects the shaft member and the steering device so as to be interlocked. It consists of a mechanism.

  The shaft member is welded with a bracket for mounting the first arm, and is rotatably supported by a support bracket on the vehicle body frame side via a bearing. The first arm is formed by a square pipe, and is attached to a bracket of the shaft member by a fixing bolt. Further, the second arm is welded to the front end of the first arm so as to extend in the left-right direction. The second arm is formed of a steel material having a U-shaped cross section, and a guide wire sensor is attached to each of the three ends of the both ends and the central portion in the longitudinal direction. The first arm and the second arm are formed of an aluminum alloy that is a non-magnetic material in order to improve the detection accuracy of the guide wire.

The link mechanism includes an arm fixed to the shaft member and a connecting member for connecting the arm and a pitman arm of the steering shaft, and the shaft member is configured to rotate integrally with the steering shaft. Has been. That is, the first arm and the second arm of the guide wire sensor support device swing in the steering direction about the shaft member as the steering handle is steered. In this way, the guide line sensor support device is configured to be interlocked with the steering device because the plurality of guide line sensors are in a direction orthogonal to the longitudinal direction of the guide line even when traveling on a curved road. This is to improve the detection accuracy of the guide lines so that they are arranged.
Japanese Patent No. 3248833 (5th page, FIGS. 1 to 6 and FIG. 11)

The conventional support device for a guide wire sensor of a golf car configured as described above has a problem of high manufacturing cost. This is because the guide wire sensor support device is formed by combining a plurality of members, and the number of man-hours for welding work and bolt fastening work for connecting the members to each other increases. As these operations, a welding operation for welding the second arm to the first arm, an operation for attaching a shaft member to the first arm with a fixing bolt, and a support bracket on the vehicle body frame side. For example, an operation of attaching the arm of the link mechanism to the shaft member.
Further, since the first arm and the second arm must be formed of a non-magnetic material, this is one of the causes for increasing the cost.

  The present invention has been made to solve such problems, and an object thereof is to reduce the manufacturing cost of the guide wire sensor support device.

  In order to achieve this object, a guide line sensor support device for a golf car according to the present invention has a guide line sensor for detecting a guide line of a traveling road attached to an end of the arm on the front side of the vehicle body, and is attached to the rear end of the arm. A support for a guide line sensor of a golf car in which a provided shaft member is supported on a vehicle body frame so as to be swingable in the left-right direction of the vehicle body, and the arm is provided at a front end portion of the vehicle body so as to be linked to a steering device. In the device, the arm, the shaft member, and a mounting seat of a tie rod that connects the arm and the steering device are integrally formed of a synthetic resin having self-lubricating properties, and the arm is formed of the shaft member. A first arm that extends forward from the vehicle body, and a second arm that is connected to the front end of the first arm and extends in the left-right direction of the vehicle body and is formed integrally with the first arm, Above The first arm is formed to have a U-shaped cross section, and the mounting seat is an upper surface of a central portion in the longitudinal direction of the first arm, and the second arm and the shaft member are connected to each other. One end of the tie rod is attached to the attachment seat from above in a state of vertically passing through the attachment seat, and the attachment seat and the shaft member in the first arm A mounting seat for attaching the cable holder is formed between the two arms, and three induction sensors are attached to the second arm, and an end of the second arm on the front side of the vehicle body is used for preventing a rear-end collision. The sensor mounting bracket is integrally formed, and the rear-end collision prevention sensor cable and the three inductive sensor cables attached to the mounting bracket are bound to the front end of the first arm by a band. Lighted, and housed in one of the cable storage tube, it is what is held in the cable holder attached to the mounting seat for said cable holder attached.

  According to the present invention, an operation of welding two arms, an operation of attaching a shaft member to the arm, and an operation of providing an arm for attaching a tie rod to the shaft member are unnecessary. Also, since the shaft member is made of a self-lubricating synthetic resin, the shaft member has a function of a bearing. Therefore, the work of assembling the bearing between the shaft member and the support bracket on the body frame side is performed. Is no longer needed. For this reason, the man-hour of the operation | work which assembles | attaches the said shaft member to a vehicle body frame can be reduced. Further, since the synthetic resin material having no magnetism is less expensive than the aluminum alloy, the material cost can be reduced.

  For this reason, according to this invention, the assembly which has an arm, a shaft member, and the attachment seat of a connection member can be formed, without performing the fastening operation by welding or a volt | bolt. Further, since the shaft member is formed of a self-lubricating synthetic resin, it has a function of a bearing. Therefore, a bearing such as a slide bearing is provided between the shaft member and the support bracket on the vehicle body frame side. The work of assembling is no longer necessary.

Therefore, the guide line sensor support device for a golf car according to the present invention can simplify the manufacturing operation and the mounting operation to the body frame.
Moreover, since the synthetic resin material which does not have magnetism is cheaper than an aluminum alloy, according to this invention, material cost can also be reduced.
As a result, the guide wire sensor support device according to the present invention can be reduced in manufacturing man-hours and material costs as compared with the conventional one, and the cost can be reduced.

  Further, in the present invention, the mounting bracket for the rear-end collision sensor is integrally formed at the end of the arm on the front side of the vehicle body, so that the rear-end collision prevention can be performed without using a bracket formed separately from the arm. The sensor can be attached to the arm. Therefore, when attaching the rear-end collision prevention sensor to the arm, the number of work steps can be reduced, and the cost can be further reduced.

  Furthermore, in the present invention, a mounting seat for the tie rod is formed above the imaginary line connecting the second arm and the shaft member, and when the arm swings, the swing side end of the arm is below the tie rod. Therefore, the interference between the swinging end of the arm and the tie rod can be avoided. Therefore, according to the present invention, it is possible to avoid the interference between the swing side end portion of the arm and the tie rod, so that the angle of the arm can be increased.

Hereinafter, an embodiment of a support device for a guide line sensor of a golf car according to the present invention will be described in detail with reference to FIGS.
FIG. 1 is a side view of a golf car equipped with a guide wire sensor support device according to the present invention, FIG. 2 is a side view of the guide wire sensor support device, and FIG. 3 is a plan view of the same. 4 is a plan view of the arm, and FIG. 5 is a front view of the arm. 6 is a sectional view taken along line VI-VI in FIG. 4, FIG. 7 is a sectional view taken along line VII-VII in FIG. 4, and FIG. 8 is a sectional view taken along line VIII-VIII in FIG.

  In these drawings, what is indicated by reference numeral 1 is a golf car equipped with a guide device 2 for guiding wire sensors according to this embodiment. In FIG. 1, 3 indicates a front wheel, 4 indicates a steering wheel, 5 indicates a front seat, 6 indicates a rear seat, 7 indicates a rear body cover, 8 indicates a caddy bag, and 9 indicates a caddy bag carrier.

As shown in FIGS. 2 and 3, the guide wire sensor support device 2 includes a support device main body 11 formed to have a T shape in plan view, and an end portion of the support device main body 11 on the vehicle body front side. It is composed of three guide wire sensors 12 attached to (the left end in FIGS. 2 and 3) and a tie rod 13 connected in the middle of the support device main body 11. It is supported so as to be swingable in the left-right direction of the vehicle body via a support shaft 15 and a support bracket 16 which will be described later. The guide wire sensor 12 has a structure equivalent to that of a conventional golf car.
Further, as shown in FIG. 1, the guide line sensor support device 2 is a front end portion of a vehicle body, and is low enough that the guide line sensor 12 can detect the guide line 18 in the travel path 17. Arranged in position.

  The support device body 11 is molded into a predetermined shape by a mold (not shown) using a synthetic resin as a material. More specifically, the support device body 11 is connected to a boss 21 supported by the support shaft 15, a first arm 22 extending from the boss 21 to the front of the vehicle body, and a front end portion of the first arm 22. Thus, the second arm 23 extending in the left-right direction of the vehicle body is integrally formed. The shaft member according to the present invention is constituted by the boss 21.

  The support device body 11 according to this embodiment is formed of polyacetal, which is a synthetic resin having self-lubricating properties. The synthetic resin having the self-lubricating property referred to here is a synthetic resin material having a relatively low friction coefficient of the material itself or a synthetic resin material in which a material having a relatively low friction coefficient such as a fluororesin is mixed. It is.

  The boss 21 is formed to have a cylindrical shape, and as shown in FIG. 2, the boss 21 is inserted into a support bracket 24 formed to have a U-shaped cross section so that the vertical movement is restricted. The support bracket 24 is fitted to the support shaft 15 fixed by a fixing bolt 25 and is supported so as to be rotatable in the left-right direction. The support bracket 24 is fixed by a fixing bolt 27 to a mounting bracket 26 welded to a lateral pipe 14a extending in the left-right direction at an end of the body frame 14 on the front side of the vehicle body, and is provided in the center of the vehicle body in the left-right direction. Is positioned.

  As shown in FIGS. 6 and 7, the first arm 22 is formed so that the cross section has a downward U shape, and a tie rod mounting seat 28 is formed at the center in the longitudinal direction. An attachment seat 30 for attaching a cable holder 29 (see FIGS. 1 and 2) is formed between the seat 28 and the boss 21. The tie rod mounting seat 28 is formed so that the tie rod 13 can be mounted from above, and as shown in FIG. 6, a collar 28a is provided by insert molding.

  Further, the intermediate portion in the length direction of the first arm 22 having the mounting seat 28 is a steering arm side driving arm to which the other end portion of the tie rod 13 having one end portion connected to the mounting seat 28 is connected. In order to match the height with 31 (see FIG. 1), it is formed so as to protrude upward as compared with both ends in the front-rear direction. Specifically, as shown in FIG. 2, the mounting seat 28 connects the second arm 23 (the swing side end portion of the support device body 11) and the boss 21 (the base end portion of the support device body 11). It is formed above the imaginary line.

  As shown in FIG. 8, the second arm 23 is formed in a U-shaped cross section downward like the first arm 22, and the fixing bolt 32 (see FIGS. 2 and 3) of the guide wire sensor 12. Bolt holes are inserted in six places to insert the reference). As shown in FIG. 8, collars 34 are respectively provided in these bolt holes 33 by insert molding.

  As shown in FIGS. 2 and 3, a rear-end collision preventing sensor 35 is attached to the second arm 23 according to this embodiment. The rear-end collision prevention sensor 35 is for detecting a distance from a preceding vehicle (not shown), and is a mounting bracket 36 integrally formed to extend upward at the front end portion of the second arm 23. It is fixed by a fixing bolt 37. The rear-end collision prevention sensor 35 and the cables 35a and 12a of the three guide wire sensors 12 are bound to the front end portion of the first arm 22 by a band 38, and as shown in FIG. It is stored in the tube 39 and held by the cable holder 29.

  In order to assemble and attach the guide wire sensor support device 2 configured as described above to the vehicle body frame 14, first, the guide wire sensor 12 and the rear-end collision prevention sensor 35 are attached to the second arm 23 of the support device body 11. The cables 12 a and 35 a of these sensors 12 and 35 are attached to the first arm 22 by the band 38 and the cable holder 29. Next, the boss 21 is inserted into the support bracket 24 together with the support shaft 15, and the support shaft 15 is fixed to the support bracket 24 with fixing bolts 25. After the support device body 11 is supported by the vehicle body frame 14 in this way, one end of the tie rod 13 is attached to the mounting seat 28 of the support device body 11.

  Therefore, in this guide wire sensor support device 2, the boss 21, the first arm 22, the second arm 23, and the tie rod mounting seat 28 are integrally formed of a synthetic resin having self-lubricating properties. Therefore, compared to the conventional guide wire sensor support device, the work of welding the first and second arms, the work of attaching the shaft member to the arm, the arm for attaching the tie rod to the shaft member, etc. The installation work is unnecessary. Further, since the boss 21 is made of a self-lubricating synthetic resin, it has a function of a bearing. Therefore, a bearing is provided between the boss 21 and the support bracket 24 on the vehicle body frame 14 side. Therefore, the work of assembling the bearing does not have to be performed. For this reason, the man-hour of the operation | work which assembles the said boss | hub 21 to the vehicle body frame 14 can be reduced. Furthermore, since the synthetic resin material without magnetism such as polyacetal is less expensive than the aluminum alloy, the guide wire sensor support device 2 according to this embodiment can also reduce the material cost.

  Further, in the guide wire sensor support device 2 according to this embodiment, the mounting bracket 36 for the rear-end collision prevention sensor 35 is integrally formed on the second arm 23, so that it is separated from the second arm 23. The rear-end collision prevention sensor 35 can be attached to the second arm 23 without using the formed bracket.

  Furthermore, the mounting seat 28 is formed above an imaginary line connecting the second arm 23 (the swing side end of the support device body 11) and the boss 21 (the base end portion of the support device body 11). Therefore, when the support device main body 11 swings, the swinging side end portion faces the lower side of the tie rod 13, so that interference between the second arm 23 and the guide wire sensor 12 and the tie rod 13 can be avoided. it can.

1 is a side view of a golf car equipped with a support device for a guide wire sensor according to the present invention. It is a side view of the support apparatus for guide wire sensors. It is a top view of the support apparatus for guide wire sensors. It is a top view of an arm. It is a front view of an arm. It is the VI-VI sectional view taken on the line in FIG. It is the VII-VII sectional view taken on the line in FIG. It is the VIII-VIII sectional view taken on the line in FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 11 ... Supporting device main body, 12 ... Guide wire sensor, 13 ... Tie rod, 14 ... Body frame, 21 ... Boss, 22 ... First arm, 23 ... Second arm, 28 ... Tie rod mounting seat, 35 ... Prevention of rear-end collision Sensor, 36... Mounting bracket.

Claims (1)

A guide line sensor for detecting the guide line of the traveling path is attached to the end of the arm on the front side of the vehicle body, and a shaft member provided at the rear end of the arm is supported on the vehicle body frame so as to be swingable in the left-right direction of the vehicle In the support device for a guide line sensor of a golf car, in which the arm is provided at the front end of the vehicle body and connected so as to be interlocked with the steering device
The arm, the shaft member, and a mounting seat of a tie rod that connects the arm and the steering device are integrally formed of a synthetic resin having self-lubricating properties,
The arm includes a first arm that extends from the shaft member to the front of the vehicle body, and a second arm that is connected to a front end portion of the first arm, extends in the left-right direction of the vehicle body, and is integrally formed with the first arm. The arm and
The first arm is formed to have a U-shaped cross section downward,
The mounting seat is an upper surface of a longitudinal center portion of the first arm, and is formed above an imaginary line connecting the second arm and the shaft member,
One end of the tie rod is attached to the mounting seat from above in a state of penetrating the mounting seat in the vertical direction,
A mounting seat for mounting the cable holder is formed between the mounting seat and the shaft member in the first arm,
Three inductive sensors are attached to the second arm,
A mounting bracket for a rear-end collision prevention sensor is integrally formed at the end of the second arm on the vehicle body front side,
The cable for the rear-end collision preventing sensor attached to the mounting bracket and the cables for the three induction sensors are bound to the front end portion of the first arm by a band, and one cable housing tube. The guide wire sensor support device for a golf car, which is stored in a cable holder and held by a cable holder attached to a mounting seat for attaching the cable holder.

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