JP2003290295A - Motor-driven cart - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve safety in the case of driving a motor-driven cart by improving visibility with respect to the motor-driven card and protecting the motor-driven cart against a traffic accident or the like. <P>SOLUTION: A flexible elongation/contraction pole 1 is provided on a motor- driven cart 2. Thus, the elongation/contraction pole 1 is visible from the driver's seat of a car. Therefore, a driver of the car can confirm the presence of the motor-driven cart 2 and the occurrence of a traffic accident or the like can be prevented. Further, a light emitting part 3 is provided on the top of the elongation/contraction pole 1 to make the elongation/contraction pole 1 more visible. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric cart mainly used by, for example, a person with a disability or the elderly, and more particularly to improving the safety of a user who is running. .

[0002]

2. Description of the Related Art Conventionally, an electric cart has been known which is mainly used by people with disabilities and the elderly. Since the size of the electric cart main body of this electric cart is regulated by the Road Traffic Law, the total height of the electric cart main body is low, and it may be difficult to confirm from the driver's seat of a passenger car, for example. In particular,
There is a problem that it is more difficult to confirm a low-powered electric cart from the driver's seat of a passenger car when the visibility is poor such as in the dim light of evening.

As described above, since the electric cart is not very visible from a passenger car or the like, there is a possibility of an accident such as the passenger car winding the electric cart at an intersection or the like.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and improves visibility of an electric cart, protects the electric cart from a traffic accident, etc. and ensures safety when the electric cart runs. The task is to improve the sex.

[0005]

In order to solve the above-mentioned problems, an electric cart according to the present invention comprises an extendable telescopic pole 1.
It is characterized by having. With such a configuration, the telescopic pole 1 can be visually recognized from the driver's seat of the passenger car so that the driver of the passenger car can confirm the existence of the electric cart 2.

Further, it is preferable that the telescopic pole 1 emits light. With such a configuration, the visibility of the electric cart 2 can be improved by causing the telescopic pole 1 to emit light even when the visibility is poor such as in the dark in the evening.

Further, it is preferable that the telescopic pole 1 is provided with a structure capable of absorbing the external force near the base of the telescopic pole 1 when the external force is applied. With such a structure, damage can be prevented even when an external force is applied to the telescopic pole 1 which can be telescopically extended.

Further, it is preferable that the telescopic pole 1 is returned to its original position in a state where the external force applied to the telescopic pole 1 is released. With such a configuration, when the external force applied to the telescopic pole 1 is released, the telescopic pole 1 returns to its original position so that the telescopic pole 1 can always be seen, so that the driver of the passenger car can drive the electric cart 2 Can be confirmed.

Further, it is preferable that the telescopic pole 1 is provided with a mechanism for automatically contracting when an external force is detected. With such a configuration, when the telescopic pole senses an external force, the telescopic pole is automatically contracted to prevent damage to the telescopic pole 1.

Further, it is preferable to provide a mechanism for automatically retracting the telescopic pole 1 when an obstacle is detected near the telescopic pole 1. With such a configuration, the telescopic pole 1
It is possible to prevent the damage.

Here, it is preferable to provide a detecting means for detecting an obstacle when the telescopic pole 1 extends to a certain height or more. With such a configuration, if an obstacle is detected when the telescopic pole 1 does not extend to a certain height or higher, for example, the driver of the electric cart 2 may be detected. , Actually a telescopic pole 1
Even if the telescopic pole 1 is not obstructed, the telescopic pole 1 may contract, but by detecting the obstacle when the telescopic pole 1 extends above a certain height, the telescopic pole 1 It is possible to achieve both the visibility of the electric cart 2 and the damage prevention of the telescopic pole 1 due to the above.

Further, it is preferable that the telescopic pole 1 is provided with a mechanism for automatically extending when an obstacle of a certain degree or more approaches. With such a configuration, when the automobile or the like approaches the electric cart 2, for example, the telescopic pole 1 automatically extends, and it is possible to avoid forgetting to extend the telescopic pole 1.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below based on the embodiments shown in the accompanying drawings.

The electric cart 2 of the present invention comprises a vehicle body 4, a handlebar 5 and a seat 50. The vehicle body 4 has a drive unit 40, rear wheels 6 driven by the drive unit 40 and operation ( It has front wheels 7 for steering.

The drive unit 40 uses electric power from a motor or the like, and is driven by the electric power of the storage battery 8 loaded on a portion of the vehicle body 4 located below the seat 50.

The vehicle body 4 is provided with a direction indicator 9, a headlight 10, a rearview mirror 11 and the like. Further, an operation panel 12 is provided in the handle 5, and the operation panel 12 displays a speed adjusting volume 13 for adjusting the speed of the electric cart 2 and a right-side direction indicator as shown in FIG. Direction button (right) 14 for displaying, direction indicator button (left) 15 for displaying left direction indicator, electric cart 2
Forward button 16 for moving forward, backward button 17 for moving electric cart 2 backward, horn button 1 for generating a horn
8, a pole extension / contraction button 19 for extending / contracting the extension / contraction pole 1, which will be described later, and a main key portion 30 for turning on / off the drive of the electric cart 2 are provided.

The driver of the electric cart 2 sits on the seat 50, inserts a key into the main key portion 30 to turn on the power, and selects a type of operation such as forward or reverse on the operation panel 12 arranged in the handle 5. Then, the accelerator 20 provided in the steering wheel 5 is operated to drive the drive device 40 to drive the rear wheels 6 which are the drive wheels to drive the electric cart 2. When the driver releases his / her hand from the accelerator 20, the power from the drive unit 40 is attenuated, and when the speed of the electric cart 2 becomes zero, the drive unit 40 is locked by an electromagnetic brake (not shown), and the electric cart 2 is stopped. Is to stop. The control of the operation of the electric cart 2 is performed by the controller 21 provided in the vehicle body 4.

A brake operating lever 22 is provided on the handle 5 so that the electric cart 2 can be braked.

A telescopic pole 1 is attached to the electric cart 2 having the above structure. The telescopic pole 1 will be described in detail below.

As shown in FIG. 4, FIG. 5 and FIG. 14, the telescopic pole 1 is unitized, and a telescopic pole portion 24 is housed in a case 23. This telescopic pole 1
Attaches the case 23 to the electric cart 2 via the attachment bracket 25. In the telescopic pole 1, the pole portion 24 is extended by the telescopic drive means provided in the case 23 so that the pole portion 24 projects from the case 23, and the pole portion 24 is contracted by the telescopic drive means.
Is stored in the case 23. here,
The top portion of the pole portion 24 may project slightly above the top portion of the case 23 in the contracted state.

The expansion / contraction drive means provided in the case 23 is driven by, for example, electric power, and the operation panel 12 provided on the handle 5 is
The pole portion 24 can be easily expanded and contracted by operating the pole expansion and contraction button 19 provided on the. In this case, the electric power for driving the expansion / contraction driving means is supplied from the storage battery 8 mounted on the vehicle body 4 through the electric wire.

By providing the pole extension button 19 on the operation panel 12 provided on the handle 5, the pole portion 2 can be operated while driving.
4 can be expanded / contracted, and the pole part 24 can be easily expanded / contracted while traveling, for example, when there is an obstacle on the road condition or the overhead of the driver of the electric cart 2. Since the pole extension button 19 is provided in the vicinity of the main key 30, it is less likely to forget to extend the pole portion 24 of the extension pole 1.

Also, the connection between the vehicle body 4 side and the telescopic pole 1 is made detachable by the coupler 26 so that the telescopic pole 1 can be easily removed from the vehicle body 4. When the telescopic pole 1 is damaged, it can be easily replaced and has excellent repairability.

When the telescopic pole 1 is attached to the electric cart 2 and the pole portion 24 is extended, the height of the ground is such that the visibility from the driver's seat of a vehicle with a high vehicle height such as a one-box car is improved. It is set so that it will not enter). Further, the retractable pole 1 has a ground height of 1090 mm or less when the pole portion 24 is contracted (depending on the prescribed size of the electric cart 2 of the Road Traffic Act).

The telescopic pole 1 may be embedded in the vehicle body 4 as in the example of FIG. 6, or may be attached so as to be attached to the outside of the vehicle body 4 as shown in FIGS. 1, 7, and 8 to 12. Good. The telescopic pole 1 may be attached to the upper rear portion of the vehicle body 4 as shown in FIGS. 1, 6, and 8 to 12, or may be attached to the upper front portion of the vehicle body 4 as shown in FIG.

Further, the electric power supplied to the expansion / contraction driving means for expanding / contracting the pole portion 24 is not the electric power supplied from the vehicle body 4 side, but a dry battery or the like may be built in the case 23 of the expansion / contraction pole 1. is there.

Further, the method of expanding and contracting the pole portion 24 is not limited to electric power, but may be expanded and contracted by other methods such as hydraulic pressure and pneumatic pressure.

Further, the expanding and contracting pole portion 24 may be expanded and contracted manually by a specific drive source.

Here, as shown in the accompanying drawings, the light emitting portion 3 may be provided at the tip of the telescopic pole 1 (that is, the tip of the pole portion 24). The light emitting unit 3 is a light bulb, an LED, or the like, and is configured to supply power to the light emitting unit 3 from the storage battery 8 mounted on the vehicle body 4 in the same manner as driving power for expanding and contracting the pole unit 24. The electric power of the light emitting unit 3 is not limited to the storage battery 8 mounted on the vehicle body 4, but a dry battery may be built in the case 23 to supply the electric power to the light emitting unit 3. Here, the light emitting unit 3 may be automatically turned on when the pole portion 24 is fully extended, and may be automatically turned off when the pole portion 24 is fully contracted.

FIG. 13 shows each example of the main key portion 30. A key is inserted into the main key portion 30 to turn on / off the power of the electric cart 2. In this case,
In FIG. 13B, the main key section 30 is provided with an “OFF” display section, an “ON / LIGHT” display section, and a “PALL” display section, and a key is inserted into the main key section 30 to display an “ON / LIGHT” display. When the electric cart 2 is turned on, the lights (headlights, side lights) are turned on at the same time, and the light emitting section 3 of the telescopic pole 1 is also turned on. Also, when the key is set to the "Pole" display section, the pole section 24 is adapted to be extended while the electric cart 2 is powered on, and when the key is returned to the "On / Light" display section, the pole section 24 is displayed. When the display is shrunk and the display is turned "OFF", the power of the electric cart 2 is turned off and the light emitting unit 3 is turned off.

In FIG. 13 (c), the main key portion 30 is provided with an "off" display portion, an "on" display portion, and a "light pole" display portion. When the "ON" display is selected, the power of the electric cart 2 is turned on. When the key is changed to the "light pole" display, the light emitting part 3 emits light and the pole part 24 is extended while the power of the electric cart 2 is turned on. And again,
When the key is returned to "ON", the pole portion 24 contracts and the light emitting portion 3 is turned off. When the "OFF" display portion is displayed, the power of the electric cart 2 is turned off.

By the way, in the above embodiment, the light emitting section 3 is adapted to emit light by electric power, but the light emitting section 3 may be one that does not use electric power (for example, a phosphor or a phosphor).

In the above embodiment, the light emitting portion 3 is provided at the tip of the pole portion 24, but the light emitting portion 3 is not limited to this. For example, as shown in FIG.
It is also possible to apply or dispose a fluorescent substance or a phosphorescent substance on the entire 4 to make the entire pole portion 24 emit light in the vertical direction.

By doing so, the pole portion 2
The visibility of the whole 4 is improved, and further the visibility of the electric cart 2 is improved.

By providing the light emitting portion 3 on the telescopic pole 1 as described above, the visibility of the electric cart 2 can be ensured even from a high car such as a one-box car even when the visibility is poor such as in the dimly lit evening. Is.

In the embodiment shown in FIGS. 8 to 12, the rearview mirror 11 of the electric cart 2 is fixed to the vehicle body 4 side. Here, in the system in which the rearview mirror 11 is fixed to the steering wheel 5, it is difficult to confirm the rearward direction when the steering wheel 5 is turned off. However, when the rearview mirror 11 is fixed to the vehicle body 4 side as in the present embodiment, the steering wheel 5 is fixed. It becomes easier to check the rear side even when it is cut. When the rearview mirror 11 is fixed to the front part of the vehicle body 4 as described above, the telescopic pole 1 is preferably attached to the upper rear part of the vehicle body 4.

By the way, when an external force (for example, an external force in a direction perpendicular to the telescopic pole 1) is applied to the telescopic pole 1, the telescopic pole 1 is provided with a structure capable of absorbing the external force near the base of the telescopic pole 1. Even if an external force is applied, damage can be prevented.

FIG. 16 shows an example of a mechanism for absorbing the external force applied to the telescopic pole 1. In the present embodiment, the shock absorbing mechanism is configured by the tension spring 31, and when the external force is applied to the telescopic pole 1, the tension spring 31 absorbs the external force.

FIG. 17 shows an example of a mechanism for absorbing the external force applied to the telescopic pole 1. In the present embodiment, the shock absorbing mechanism is composed of a torque limiter. That is, a bracket 25 for attaching the telescopic pole 1 to the electric cart 2 is composed of a fixed portion 25a for fixing the electric cart 2 and a movable portion 25b for attaching the telescopic pole 1, and the fixed portion 25a and the movable portion 25b are a torque limiter. It is connected through a section. The movable portion 2 with respect to the fixed portion 25a
5b is rotatably connected by a bolt 33 and a nut 34 via a disc spring 32, and a plurality of locking holes 35 are concentrically provided on either the fixed portion 25a or the movable portion 25b with the center of rotation as the center. A torque limiter is configured by providing a protrusion 36 that is elastically locked by the disc spring 32 in the locking hole 35 on the other side. Here, the bolt 33 is in a direction orthogonal to the longitudinal direction of the pole portion 24.

However, in the present embodiment, when an external force acts on the telescopic pole 1 (for example, an external force in a direction perpendicular to the telescopic pole 1), when the external force is a predetermined value or more, the disc spring 32 is resisted. The movable portion 25b is rotated with respect to the fixed portion 25a to absorb the impact and prevent the telescopic pole 1 from being damaged.

By the way, in the above-described structure in which the external force is absorbed when the external force acts on the telescopic pole 1 to prevent the telescopic pole 1 from being damaged, the external force applied to the telescopic pole 1 is released. It is preferable that the telescopic pole 1 is configured to return to its original position in the closed state.

That is, in the above-described embodiment shown in FIG. 16, when an external force is applied to the telescopic pole 1, the telescopic pole 1
Absorbs an external force by rotating and tilting at the tension spring 31, but when the external force is released, the elastic force of the tension spring 31 causes the telescopic pole 1 to return to its original position, so that the From the driver's seat, it is possible to secure a height above the ground that does not enter the blind spot.

In addition to the above-described embodiment, the mechanism for returning the telescopic pole 1 includes, for example, a bracket 25 for attaching the telescopic pole 1 to the electric cart 2 and a fixing portion 25a for fixing the bracket 25 to the electric cart 2 as shown in FIG. The movable portion 25b is attached to the pole 1, and the movable portion 25b is rotatable about an axis with respect to the fixed portion 25a, and one end of a helical spring (not shown) is attached to the fixed portion 25a side. And attach the other end of the spiral spring to the movable part 25b,
The elastic force of the spiral spring normally holds the telescopic pole 1 attached to the movable portion 25b so that the telescopic pole 1 stands upright. When an external force acts on the telescopic pole 1, the telescopic pole 1 resists the helical spring. It may be rotated to absorb the external force, and when the external force to the telescopic pole 1 is released, it may be returned to the original state by the elastic return force of the spiral spring.

Further, when an external force is applied to the pole portion 24 of the telescopic pole 1, the sensor (strain gauge) may detect the external force and the pole portion 24 may be automatically contracted. That is, a strain gauge (not shown) is provided on the inner surface of the pole portion 24, and when an external force acts on the pole portion 24 to deform (bend) the pole portion 24, a signal from the strain gauge is input to the controller 21 to automatically On the pole part 24
Is controlled so as to shrink. With such a configuration, when the electric cart 2 is running with the pole portion 24 extended, the pole portion 24 such as a branch of a roadside tree should be accidentally run.
Even if the pole portion 24 is caught on an object whose height above the tip is lower than the tip, the pole portion 2 is damaged before the pole portion 24 is damaged.
4 can be contracted to prevent the pole portion 24 from being damaged. In this way, when the external force acts, the pole portion 24 which is automatically contracted is controlled by the controller 21 so as to automatically expand and return after a certain time has elapsed.

Next, the embodiment shown in FIGS. 18 and 19 will be described. The present embodiment is an example in which a detecting means for detecting an obstacle is provided when the telescopic pole 1 extends to a certain height or more. That is, the ultrasonic sensor 37 is arranged at the tip of the pole portion 24, and the obstacle near the front of the electric cart 2 at the tip of the pole portion 24 in the traveling direction can be detected by the ultrasonic sensor 37. FIG.
An area 38 indicated by a diagonal line is a detection area of an obstacle by the ultrasonic sensor 37. FIG. 19 shows a flowchart of this embodiment. When an obstacle near the front of the electric cart 2 in the traveling direction is detected by the ultrasonic sensor 37, a detection signal of the obstacle is input to the controller 21 and the pole portion 24 is automatically contracted. . As a result, the pole portion 24 begins to contract before it comes into contact with an obstacle in the vicinity of the front of the electric cart 2 in the traveling direction, and when the electric cart 2 passes a position where there is an obstacle, the pole portion 24 contracts to a sufficiently low height. It is possible to prevent damage due to obstacles (for example, branches of street trees). As described above, the pole portion 24 which is automatically shrunk by the detection of the obstacle, the controller 2 after a certain time elapses.
It is controlled by 1 so as to automatically extend and return.

By the way, the detection of the obstacle by the ultrasonic sensor 37 is performed only when the pole portion 24 extends a certain amount or more. That is, in FIG. 20, the obstacle is detected by the ultrasonic sensor 37 only when the pole portion 24 becomes higher than the ground height H. And from this ground height H, the pole part 24 is further M
Therefore, the range of M is the operating range of the ultrasonic sensor 37. Here, when the pole portion 24 does not extend for a certain amount or more, for example, the driver may be detected as an obstacle, and although it is not an obstacle that adversely affects the pole portion 24 in reality. Since the pole portion 24 contracts, the original function of the pole portion 24, that is, the visibility of the electric cart 2 cannot be improved. Therefore, the detection of the ultrasonic sensor 37 is performed only when the pole portion 24 extends a certain amount or more, so that the visibility of the electric cart 2 can be secured and the damage of the pole portion 24 can be prevented.

Next, still another embodiment of the present invention will be described with reference to FIGS. 21, 22 and 23. In the present embodiment, the telescopic pole 1 is provided with a mechanism for automatically extending when an obstacle of a certain degree or more approaches. In this embodiment, the ultrasonic sensor is provided as a unit in the case 23 of the telescopic pole 1 or in the electric cart 2, and the detection range of the ultrasonic sensor is the distance and height of the detection target object that affects the electric cart 2. Is set to. For example, when a car approaches from the rear and passes over the side and overtakes the electric cart 2, it is determined that the electric cart 2 is traveling at a position close to a place where such a car is passing. As a result, the pole portion 24 is automatically extended to improve the visibility of the electric cart 2 and an effect of protecting the electric cart 2 from a traffic accident is expected. Further, when it is determined from the detection of the ultrasonic sensor that the electric cart 2 is traveling in a place where there is no detection target that affects the electric cart 2, it is not necessary to extend the pole portion 24, so Therefore, it is possible to prevent the pole portion 24 from being damaged by an unexpected external force. Furthermore, since the pole portion 24 automatically extends with respect to the detection target object that affects the electric cart 2,
You will never forget to stretch it.

Also, the rearview mirror 11 of the electric cart 2 according to the embodiment shown in FIGS. 18, 20, 21, and 22.
Is fixed to the vehicle body 4 side. This is the conventional handle 5
This is because it is difficult to confirm the rear when the handlebar 5 is turned in the rear-view mirror fixing method. The telescopic pole 1 is attached to the rear of the vehicle body 4 via a bracket 25, and the ground height when the telescopic pole 1 is fully extended is set so as not to enter the blind spot of a high vehicle such as a one-box car. Also in these embodiments, the ground height when the telescopic pole 1 is contracted is 1090 mm or less (from the size specified by the electric cart of the Road Traffic Act). Also,
Also in these embodiments, the tip of the pole portion 24 has L
A light emitting part 3 such as an ED is provided so that it is automatically turned on when it is fully extended and turned off automatically when it is fully contracted. This LED is a one-box even when the visibility is poor such as in the dim evening or at night. Visibility from the driver's seat of a car can be secured. In this case, the light emitting unit 3 may be formed of a fluorescent substance or a phosphorescent substance that does not use electric power.

Further, the switch of the telescopic pole 1 is arranged on the handle 5 portion of the electric cart 2 so that the electric pole 2 can be easily driven while traveling, such as when there are obstacles above the head of the electric cart 2. It can be expanded and contracted. Further, since the switch of the telescopic pole 1 is provided on the main key portion 30 of the electric cart 2, it is less likely to forget to extend the telescopic pole 1.

Further, the telescopic pole 1 is unitized and can be removed together with the unit, and if it should be damaged, it can be easily replaced and has excellent repairability.

[0051]

As described above, according to the invention of claim 1 of the present invention, since the electric cart is provided with the telescopic pole which can be extended and retracted, the telescopic pole can be visually recognized from the driver's seat of the passenger car, and The driver can easily confirm the existence of the electric cart, which prevents the electric cart from entering the blind spot from the driver's seat of the passenger car, and in particular prevents traffic accidents where the passenger car involves the electric cart at an intersection or the like. Therefore, the traveling safety of the electric cart can be improved.

According to the invention of claim 2, in addition to the effect of the invention of claim 1, the expandable telescopic pole emits light, so that the field of view is dim at dusk or at night. Even when the visibility of the telescopic pole itself is poor, the visibility of the electric cart can be improved and a traffic accident can be prevented.

Further, in the invention described in claim 3, in addition to the effect of the invention described in claim 1, there is provided a structure capable of absorbing an external force near the base of the telescopic pole when an external force is applied to the telescopic pole. Therefore, even if the expansion pole comes into contact with an obstacle or is caught by an external force, the expansion pole will not be damaged.

Further, in the invention described in claim 4, in addition to the effect of the invention described in claim 3, the telescopic pole is returned to its original position in a state where the external force applied to the telescopic pole is released. With this configuration, when the external force applied to the telescopic pole is released, the telescopic pole returns to its original position so that the telescopic pole can always be seen. The person can confirm the existence of the electric cart.

Further, in the invention described in claim 5, in addition to the effect of the invention described in claim 1, since the telescopic pole is provided with a mechanism for automatically contracting when it detects an external force, the telescopic pole is obstructed. The telescopic pole will not be damaged even if it comes into contact with or is caught.

Further, in the invention described in claim 6, in addition to the effect of the invention described in claim 1, there is provided a mechanism for automatically retracting the telescopic pole when an obstacle is detected near the telescopic pole. Therefore, even if there is an obstacle with a height that gets caught at the tip of the pole part in the front of the running direction of the electric cart, it will be detected in advance and the telescopic pole will be contracted, and the telescopic pole will be damaged or damaged. There is no such thing.

According to the invention of claim 7, in addition to the effect of the invention of claim 1, a detection for detecting an obstacle when the telescopic pole extends to a certain height or more. Since the means is provided, the driver of the electric cart is not erroneously detected as an obstacle, and the visibility of the electric cart by the telescopic pole and the damage prevention of the telescopic pole can both be achieved.

In addition, in the invention described in claim 8, in addition to the effect of the invention described in claim 1, since the telescopic pole is automatically extended when an obstacle of a certain degree or more approaches, it is provided. For example, when an automobile or the like approaches an electric cart, the telescopic pole automatically extends so that the telescopic pole is not forgotten.

[Brief description of drawings]

FIG. 1 is a perspective view of an electric cart according to the present invention.

FIG. 2 is a side view of the above electric cart.

FIG. 3 is a perspective view of the handle portion of the above.

FIG. 4 is a perspective view of the same telescopic pole in a contracted state.

FIG. 5 is a perspective view of a tip portion of a pole portion in a state in which the above-described telescopic pole is extended.

FIG. 6 is a perspective view of another embodiment of the electric cart of the present invention.

FIG. 7 is a perspective view of still another embodiment of the electric cart according to the present invention.

FIG. 8 is a perspective view of still another embodiment of the electric cart of the present invention.

FIG. 9 is a front view of the above.

FIG. 10 is a side view of the above.

FIG. 11 is a rear view of the above.

FIG. 12 is a plan view of the above.

13A is a perspective view of a handle portion of another embodiment of the above, FIG. 13B is a front view of a main key portion, and FIG. 13C is a front view of another example of the main key portion. Is.

14A and 14B show another example of the telescopic pole, wherein FIG. 14A is a perspective view of the pole portion extended, and FIG. 14B is a perspective view of the pole portion contracted.

FIG. 15 shows another example of the light emitting portion of the above-mentioned telescopic pole,
(A) is a front view, (b) is sectional drawing of the XX line of (a).

FIG. 16 is a side view showing an example of a structure that absorbs an external force when an external force is applied to the telescopic pole of the above.

FIG. 17 shows another example of a structure that absorbs an external force when an external force is applied to the telescopic pole of the above, (a) is a side view, (b) is a plan view, and (c) is a main part. It is an expanded sectional view.

FIG. 18 is a side view of another embodiment of the present invention.

FIG. 19 is a flowchart of the above.

FIG. 20 is a side view of still another embodiment of the present invention.

FIG. 21 is a rear view of another embodiment of the present invention.

FIG. 22 is a side view of the above.

FIG. 23 is a flowchart of the above.

[Explanation of symbols]

1 telescopic pole 2 electric cart 3 light emitting part

Claims (8)

[Claims] 1. An electric cart comprising an extendable telescopic pole. 2. The electric cart according to claim 1, wherein the telescopic pole emits light. 3. The electric cart according to claim 1, further comprising a structure capable of absorbing an external force near the base of the telescopic pole when an external force is applied to the telescopic pole. 4. The electric cart according to claim 3, wherein the telescopic pole is configured to return to its original position when the external force applied to the telescopic pole is released. 5. The electric cart according to claim 1, wherein the telescopic pole is provided with a mechanism for automatically contracting when an external force is sensed. 6. The electric cart according to claim 1, further comprising a mechanism for automatically retracting the telescopic pole when an obstacle is detected near the telescopic pole. 7. The electric cart according to claim 1, further comprising detection means for detecting an obstacle when the telescopic pole extends to a certain height or more. 8. The electric cart according to claim 1, further comprising a mechanism in which the telescopic pole automatically extends when an obstacle of a certain size or more approaches.