JP6895824B2 - Operating device and hand-held mobile body equipped with it - Google Patents

Description

The present invention relates to an operating device and a hand-held mobile body provided with the operating device.

Conventionally, a hand-pushed moving body such as a silver car, a stroller, a shopping cart, a walking car for rehabilitation, or a trolley is provided with an operating device for rotating and driving wheels by a motor by pushing the handle part while walking. I have something to prepare for.
As such an operating device, for example, the operating portion of the bar handle includes an internal pipe, an external member through which the internal pipe is inserted and provided so as to be relatively displaceable in the front-rear direction with respect to the internal pipe, and the internal pipe and the external member. A configuration is known that includes a sensor that detects a relative displacement with and a sensor (see, for example, Patent Document 1).

In such an operating device, the external member is provided so as to be relatively displaceable in the front-rear direction with respect to the internal pipe by inserting the internal pipe into an oval guide hole long in the front-rear direction.
Further, the sensor is mounted on a substrate fixed to a steering wheel cover provided in a central portion in the vehicle width direction in an external member. When the operator manually pushes the external member, the external member moves relative to the internal pipe forward, so that the sensor detects the relative movement amount. The motor generates an auxiliary force for rotationally driving the wheels according to the relative movement amount detected by the sensor.

Japanese Unexamined Patent Publication No. 2015-33505

By the way, in the operation device disclosed in Patent Document 1, in order to make the external member relatively displaceable with respect to the internal pipe, a displacement sensor is provided so as to face the inner pipe in the lateral direction. Then, a holding member for the displacement sensor, a guide pin, and the like are required in the housing, which complicates the structure. Further, in order to prevent water and dust from entering the inside from the connecting portion between the internal pipe and the external member, dustproof measures and waterproof measures are required, which complicates the structure.

Therefore, the present invention has been made in view of the above-mentioned circumstances, and the structure is simplified, and the structure is simplified to be waterproof and dustproof while maintaining a feeling of operation and detection sensitivity when the operation is performed. It is to provide an operating device capable of enhancing performance and a hand-held mobile body equipped with the operating device.

The present invention employs the following means in order to solve the above problems.
That is, the operating device of the present invention includes a tubular handle body provided on the hand-push moving body and extending in the vehicle width direction, an internal member provided on the handle body, and the internal member provided on the handle body. An external member to be encapsulated and a displacement detecting unit provided inside the external member and detecting a displacement of the external member with respect to the internal member are provided, and the internal member is provided at one end and is provided on the inner circumference of the handle body. has a fixed portion which is fitted and fixed to the surface, the extending portion extending from the fixed portion that protrudes from one end of the handle body, wherein the outer member, wherein the handle body and is integrally molded extending from said one end of the handle body, the extending portion of the inner member, possess a cylindrical portion for enveloping via a gap, and a closing plate which is formed so as to close the inside of the cylindrical portion It is characterized by being.

According to such a configuration, the force applied to the handle body is transmitted to the outer member as a whole, but is not directly transmitted to the extension part to the internal member but to a part of the fixed part. Can only be transmitted. Therefore, it is not necessary for the connecting portion between the internal member and the external member to have a configuration in which the external member can be relatively displaced with respect to the internal member, and the external member can be relatively displaceable with respect to the internal member. As a result, the configuration of the operating device can be simplified.
Further, since the displacement detection unit is covered with an external member, the dustproof performance and the waterproof performance can be improved, and the configuration of the operating device can be simplified.
Further, when the operator manually pushes the external member, the external member surely bends and deforms with respect to the internal member and is displaced relative to the internal member. As a result, when the operator manually pushes the external member, the relative displacement can be detected with high sensitivity.
Further, since no gap is formed between the handle body and the external member, the dustproof performance and the waterproof performance can be further improved.

Further, the operating device of the present invention is characterized in that the handle body and the external member are integrally molded.

According to such a configuration, the configuration of the operating device can be further simplified. Further, since no gap is formed between the handle body and the external member, the dustproof performance and the waterproof performance can be further improved.

Further, in the operating device of the present invention, the external member has an opposing surface facing the tip surface of the internal member opposite to the handle body, and is located in an intersecting surface intersecting the central axis of the internal member. The displacement detection unit is provided so as to be relatively displaceable, and the displacement detection unit detects the relative displacement between the tip surface and the facing surface in the intersection surface caused by the deformation and deformation of the external member with respect to the internal member. It is preferable to do so.

According to such a configuration, the displacement detection unit detects the relative displacement between the end face and the facing surface in the intersection surface caused by the deformation and deformation of the outer member with respect to the inner member. Thereby, the relative displacement of the external member with respect to the internal member can be detected without displacement of the entire external member with respect to the internal member. Therefore, when the operator manually pushes the operating device, displacement detection is performed to detect the relative displacement between the internal member and the external member due to the bending of the external member, even if the external member does not cause a large relative displacement to the internal member so as to rattle. It can be detected with high sensitivity.

Further, the operating device of the present invention, the inner member is a rod shape of a hollow cylindrical or solid, the outer member, said tubular portion, which is formed so as to close the inside of the cylindrical portion The displacement detecting unit detects the relative displacement between the tip surface and the facing surface at a portion where the tip surface of the internal member and the facing surface of the external member face each other. It is preferable to do so.

According to such a configuration, the entire internal member is surrounded by the external member, and it is possible to reliably prevent dust, water, and the like from entering between the external member and the internal member from the outside.
Further, the facing surface faces the tip surface of the internal member, and the displacement detection unit is a portion where the tip surface of the internal member and the facing surface of the external member face each other. The relative displacement with respect to is detected. Thereby, the relative displacement in the intersection surface between the internal member and the external member can be detected with higher sensitivity on the outer side in the vehicle width direction with respect to the internal member.
Further, the displacement detection unit is provided at a portion where the tip surface of the internal member and the facing surface of the external member face each other. As a result, it is not necessary to provide the displacement detection unit between the outer peripheral surface of the internal member and the inner peripheral surface of the external member, and it is possible to prevent the external member from bulging outward in the radial direction in order to provide the displacement detection unit. ..

Further, the operating device of the present invention may include a displacement regulating unit in which at least one of the external member and the internal member regulates a relative displacement amount of the external member with respect to the internal member in the intersection surface.

According to such a configuration, it is possible to suppress an excessive relative displacement of the external member. Therefore, it is possible to prevent the external member from being plastically deformed when an excessive external force is applied.

Further, in the operating device of the present invention, the displacement detecting unit is provided on each of the tip surface of the internal member and the facing surface of the external member, and the internal member is on the side opposite to the tip surface. The other end may be fixed to the external member, and the end on the front end surface side may have a radial gap between the external member and the external member so as to intersect the central axis.

According to such a configuration, when the operator manually pushes the external member, the end portion of the external member on the front end surface side of the internal member having a gap in the radial direction is bent and deformed with respect to the internal member. .. As a result, the relative displacement of the external member with respect to the internal member can be detected with higher sensitivity on the front end surface side of the internal member.

Further, in the operating device of the present invention, the external member is formed to extend from both ends of the steering wheel body in the vehicle width direction, and the internal member is provided at an intermediate portion of the steering wheel body in the vehicle width direction. At the same time, the tip portion fixed to the steering wheel body at the central portion of the length in the vehicle width direction and extending toward both sides in the vehicle width direction intersects the central axis of the internal member with the external member. There may be a gap in the radial direction.

According to such a configuration, when the operator manually pushes both ends of the external member in the vehicle width direction, the external member is the tip of both sides in the vehicle width direction of the internal member provided in the intermediate portion in the vehicle width direction. On the part side, bending deformation with respect to the internal member occurs. As a result, the relative displacement of the external member with respect to the internal member can be detected with higher sensitivity on the tip end side of the internal member.

Further, the operating device of the present invention may be provided with a cover member covering a region through which the internal member is inserted, at least inside the external member, on the outer side in the radial direction of the external member.

According to such a configuration, when the operating device is irradiated with sunlight, it is possible to prevent the external member from rising in temperature and being thermally deformed. Therefore, it is possible to suppress the influence of heat due to sunlight irradiation and perform highly sensitive detection of displacement of the external member.

Further, in the operating device of the present invention, the displacement detecting unit may be a magnetic sensor.

According to such a configuration, the displacement detection unit has a simple structure, and even if dust, water, or the like intrudes, the displacement detection unit can be suppressed from malfunctioning.

Further, the hand-pushed moving body of the present invention is characterized by including an operating device as described above.

According to such a configuration, it is possible to provide a hand-pushed moving body capable of enhancing the operation feeling and the detection sensitivity when the operation is performed while simplifying the structure.

According to the present invention, it is possible to enhance the feeling of operation and the detection sensitivity when the operation is performed.

It is a perspective view of the electric assist silver car as a hand-pushing moving body provided with the operation device in 1st Embodiment of this invention. FIG. 5 is a cross-sectional view of the operating device according to the first embodiment of the present invention as a cross-sectional view along the central axis thereof. FIG. 5 is an enlarged cross-sectional view of a part of the operating device according to the first embodiment of the present invention. It is a side view which shows the displacement detection part of the operation apparatus in 1st Embodiment of this invention. FIG. 5 is a cross-sectional view showing a state in which an external pipe is displaced relative to an internal member in the operating device according to the first embodiment of the present invention. FIG. 5 is a side view showing a state in which the outer pipe is displaced relative to the inner member in the operating device according to the first embodiment of the present invention. It is sectional drawing which shows the displacement detection part of the operation apparatus in the modification of 1st Embodiment of this invention. FIG. 5 is a cross-sectional view of the operating device according to the second embodiment of the present invention viewed in cross section along the central axis thereof. It is sectional drawing which shows the modification of the 1st and 2nd Embodiment of this invention. It is sectional drawing which shows the other modification of the 1st and 2nd Embodiment of this invention.

Next, the operating device according to the embodiment of the present invention and the hand-pushed moving body provided with the operating device will be described with reference to the drawings.

(First Embodiment)
FIG. 1 is a perspective view of an electrically assisted silver car 10 provided with an operating device according to an embodiment of the present invention.

(Electric assisted silver car)
As shown in FIG. 1, the electrically assisted silver car (hand-pushing moving body) 10 includes a frame 11, a storage portion 12, wheels 13, and an operating device 30A.

The frame 11 includes a seat frame 11a that supports the storage portion 12, a back frame 11b that is provided at one end of the seat frame 11a and extends upward, and a back frame 11b extending downward from substantially the center in the extending direction. It includes an extending leg frame 11c.
Here, in the following description, in a plan view, the side where the back frame 11b is provided is the rear side with respect to the seat frame 11a, the opposite side is the front side, and the left and right sides are sideways in the front-rear direction. The direction connecting the left side and the right side is sometimes called the vehicle width direction.

The storage unit 12 is capable of placing or sitting an article on the upper surface.

The wheels 13 are provided at the lower end of the leg frame 11c. In this embodiment, the leg frame 11c extends from the upper side to the lower side toward the four corners of the electrically assisted silver car 10 in a plan view. As a result, the wheels 13 are arranged at the four corners of the electrically assisted silver car 10. Here, of the four wheels 13, the wheels 13f provided on both sides in the width direction in front of the frame 11 are provided in pairs on both sides of the leg frame 11c. Further, the wheels 13r provided on both sides in the width direction behind the frame 11 are provided on the side of the leg frame 11c.

The electrically assisted silver car 10 rotationally drives at least a part of the plurality of wheels 13 (for example, wheels 13r on both sides in the width direction of the rear B) according to the operating force of a pedestrian who intends to move the electric assist silver car 10. The electric assist system 20 is provided.
The electric assist system 20 includes an operating device 30A for inputting a pedestrian's operating force, a driving device 21 including a configuration for applying a rotational force to the wheels 13 such as a motor, and a pedestrian's operation output from the operating device 30A. A control device (not shown) that controls the operation of the drive device 21 based on a force is provided.

The drive device 21 is provided in the vicinity of the wheel 13 to be rotationally driven. The drive device 21 may be arbitrarily configured such as having an arbitrary speed reducer or an output shaft in addition to the motor.
The control device (not shown) may be provided at any place, but in the present embodiment, it is stored in the storage unit 12.

(Operating device)
FIG. 2 is a cross-sectional view of the operating device 30A according to the first embodiment of the present invention, which is viewed in cross section along the central axis thereof. FIG. 3 is an enlarged cross-sectional view of a part of the operating device 30A according to the first embodiment of the present invention. FIG. 4 is a side view showing the displacement detection unit 40A of the operation device 30A according to the first embodiment of the present invention.
The operating device 30A is provided at the upper end of the back frame 11b of the frame 11. As shown in FIGS. 2 and 3, the operating device 30A includes a handle body 34 provided at the upper end of the back frame 11b and extending in the vehicle width direction, internal members 35 provided at both ends of the handle body 34, and an external pipe. A 31 and a displacement detecting unit 40A for detecting the displacement of the external pipe 31 with respect to the internal member 35 are mainly provided.

As shown in FIG. 1, the handle body 34 is formed in a cylindrical shape. The handle body 34 is provided on the upper end of the back frame 11b by welding or via an appropriate bracket or the like. Further, the steering wheel main body 34 has a central portion in the vehicle width direction extending along the vehicle width direction, while both end sides in the vehicle width direction extend obliquely toward the rear. External pipes 31 are integrally molded at both ends of the handle body 34 in the vehicle width direction.

As shown in FIGS. 2 and 3, the outer pipe 31 is formed so that the outer diameter substantially matches the outer diameter of the handle main body 34 and the inner diameter is larger than the inner diameter of the handle main body 34. .. As a result, the outer pipe 31 is formed to be thinner than the handle body 34. Further, the outer pipe 31 extends obliquely toward the rear so as to extend along the extending directions of both ends of the handle body 34 in the vehicle width direction.
More specifically, the external pipe 31 closes the cylindrical tubular portion 32 extending from both ends of the handle main body 34 in the vehicle width direction and the end portion 31s of the tubular portion 32 on the side opposite to the handle main body 34. It has a hollow sealed structure having a closing plate 33 and a closing plate 33. Here, the block plate 33 is fixed to both ends of the tubular portion 32 by screwing, fitting, welding, or the like.

Further, one ends 35a of the internal member 35 are internally fitted and fixed to both ends of the handle body 34 in the vehicle width direction. The internal member 35 has a hollow tubular shape or a solid rod shape, and is fixed by press-fitting one end 35a on the intermediate portion side in the vehicle width direction into the inside of the handle body 34. The internal member 35 is formed by the one end 35a and the extending portion 35c extending outward from the one end 35a in the vehicle width direction. That is, the outer pipe 31 is externally wrapped so as to cover the periphery of the extending portion 35c of the inner member 35 with the gap S1.

As shown in FIG. 3, the internal member 35 is formed with a displacement regulating portion 36 whose diameter is expanded outward in the radial direction at the tip portion 35b on the opposite side of the handle main body 34. The outer diameter of the displacement regulating portion 36 of the inner member 35 is formed to be smaller than the inner diameter of the outer pipe 31 by a predetermined dimension, and has a gap S1 in the radial direction with the outer pipe 31. As a result, the internal member 35 and the external pipe 31 can be relatively displaced within the range of the gap S1 in the intersecting surface including the radial direction where the internal member 35 intersects the central axis C orthogonally.

By the way, the outer pipe 31 has a lower rigidity than the inner member 35, in other words, a smaller moment of inertia of area. The internal member 35 can be formed of, for example, an aluminum alloy. The outer pipe 31 can be formed of carbon fiber reinforced plastic (CFRP), an aluminum alloy, or the like.

As shown in FIGS. 3 and 4, a displacement detecting portion 40A is provided on the tip surface 37 of the internal members 35 and the closing plate 33 of the external pipe 31 arranged so as to face each other. The displacement detection unit 40A is a so-called magnetic sensor including a displacement sensor 41 provided on the tip surface 37 of the internal member 35 and a magnet 42 provided on the closing plate 33 of the external pipe 31.

The displacement sensor 41 is mounted on a plate-shaped substrate 43 provided on the tip surface 37 of the internal member 35. The displacement sensor 41 detects the relative displacement amount of the magnet 42 (external pipe 31) with respect to the displacement sensor 41 by detecting the change in the magnetic field of the magnet 42.
Here, two sets of displacement sensors 41 are provided to detect the relative displacement amount of the magnets 42 in two directions intersecting each other. With this configuration, the relative displacement amount (relative displacement direction and relative displacement dimension) of the outer pipe 31 with respect to the inner member 35 in the plane orthogonal to the central axis C of the outer pipe 31 can be detected. Thereby, the amount of displacement in the rotational direction around the central axis C of the outer pipe 31 with respect to the inner member 35 can also be detected.

Further, in order to output the detection signal of the displacement sensor 41, a signal wiring (not shown) is connected to the substrate 43. This signal wiring penetrates the inside of the internal member 35 and is guided to the intermediate portion side in the vehicle width direction. The signal wiring is led out to the outside of the external pipe 31 through a through hole (not shown) formed in the external pipe 31, and is connected to a control device (not shown).

Further, as shown in FIG. 1, tubular grip members 15 and brake levers 16 are provided at both ends of the outer pipe 31 in the vehicle width direction. The operator operates the operating device 30A by grasping the grip members 15 on both sides in the vehicle width direction.
Further, the brake lever 16 is arranged at a predetermined interval with respect to the grip member 15. The operator can apply a braking force to the wheel 13 by gripping the brake lever 16 together with the grip member 15, that is, by pulling the brake lever 16 toward the grip member 15.

(Operation of operating device)
In the operating device 30A as described above, when the operator manually pushes and pulls the portions of the grip members 15 provided at both ends of the external pipe 31 of the operating device 30A in the vehicle width direction in the front-rear direction, the internal member 35 is pressed. The low-rigidity outer pipe 31 is relatively displaced in the intersecting surface intersecting the central axis C of the inner member 35. At this time, the outer pipe 31 is mainly displaced in the front-rear direction with respect to the inner member 35. Specifically, the outer pipe 31 is provided in the vehicle width direction in which the tip end portion 35b of the internal member 35 has a gap S1 in the radial direction with respect to the handle body 34 into which one end 35a of the internal member 35 is press-fitted. On the outside, it bends and deforms in a direction (mainly in the front-rear direction) intersecting the central axis C of the internal member 35, causing a relative displacement with respect to the internal member 35.

FIG. 5 is a cross-sectional view showing a state in which the outer pipe 31 is displaced relative to the inner member 35 in the operating device according to the first embodiment of the present invention. FIG. 6 is a side view showing a state in which the outer pipe 31 is displaced relative to the inner member 35 in the operating device 30A according to the first embodiment of the present invention.
As shown in FIGS. 5 and 6, when the external pipe 31 is displaced relative to the internal member 35, the displacement sensor 41 of the displacement detection unit 40A provided on the tip surface 37 and the magnet provided on the closing plate 33. 42 and 42 cause a relative displacement in the direction intersecting the central axis C of the internal member 35. The displacement sensor 41 of the displacement detection unit 40A detects the relative displacement amount, the relative displacement direction, and the rotation direction (twisting direction) of the external pipe 31 with respect to the internal member 35 by detecting the magnetic field from the magnet 42 that changes due to the relative displacement. can do.

When the detection signal in the displacement sensor 41 is output to the control device (not shown) via the signal wiring (not shown), the control device (not shown) tells the relative displacement amount of the external pipe 31 detected by the displacement sensor 41. , The operation of the motors and the like constituting the drive device 21 is controlled based on the relative displacement direction. Specifically, the control device (not shown) is a drive device so as to advance the electric assist silver car 10 when the operation device 30A is pushed forward while the electric assist silver car 10 is in the stopped state. Operate 21 motors.

Further, in the control device (not shown), when the electrically assisted silver car 10 is in the forward state, the operator releases the hand from the operating device 30A, and the amount of relative displacement of the external pipe 31 toward the front with respect to the internal member 35. Decreases, the motor of the drive device 21 is decelerated, and the electrically assisted silver car 10 is decelerated. Further, when the electric assist silver car 10 is in the forward state, when the operator pulls the operating device 30A rearward and the external pipe 31 is displaced rearward with respect to the internal member 35, the motor of the driving device 21 Is stopped, and the electric assist silver car 10 is stopped.

Further, when the operator grips the brake lever 16, the external pipe 31 is relatively displaced in the direction approaching the brake lever 16. Also in this case, the control device (not shown) stops the motor of the drive device 21 and stops the electric assist silver car 10.
Further, the control device (not shown) is a motor of the drive device 21 so that when the operation device 30A is pushed backward while the electric assist silver car 10 is in the stopped state, the electric assist silver car 10 is retracted. To operate.

Here, when the external pipe 31 is displaced relative to the internal member 35 in the intersection surface by being operated by the operator and the displacement regulating portion 36 abuts on the inner peripheral surface of the external pipe 31, it is that of the external pipe 31. The above relative displacement is regulated.

As described above, the above-mentioned operating device 30A includes a handle body 34 provided at the upper end of the back frame 11b and extending in the vehicle width direction, internal members 35 provided at both ends of the handle body 34, and an external pipe 31. It mainly includes a displacement detection unit 40A for detecting the displacement of the external pipe 31 with respect to the member 35. Then, the outer pipe 31 externally encloses the extending portion 35c of the inner member 35 via the gap S1. Therefore, the force applied to the handle body 34 is transmitted to the outer pipe 31 as a whole, but is not directly transmitted to the extension portion 35 to the internal member 35, but is transmitted only to one end 35a. it can. As a result, it is not necessary for the connecting portion between the internal member 35 and the external pipe 31 to have a configuration in which the external pipe 31 can be displaced relative to the internal member 35, and the external pipe 31 can be displaced relative to the internal member 35. Can be. As a result, the configuration of the operating device 30A can be simplified.
Further, since the displacement detection unit 40A is covered with the external pipe 31, the dustproof performance and the waterproof performance can be improved, and the configuration of the operating device 30A can be simplified.

Further, it has a simple structure such that the external pipe 31 extends from the handle body 34. That is, since the handle body 34 and the external pipe 31 are integrally molded, the dustproof performance and the waterproof performance of the operating device 30A can be further improved.
Further, the outer pipe 31 has a lower rigidity than the inner member 35, in other words, a smaller moment of inertia of area. In addition to this, when the operator manually pushes the outer pipe 31, the outer pipe 31 is surely displaced relative to the inner member 35. As a result, when the operator manually pushes the external pipe 31, the relative displacement can be detected with high sensitivity.

Further, the internal member 35 has a tip surface 37 facing outward in the vehicle width direction at an end portion in the vehicle width direction. Further, the outer pipe 31 has a closing plate 33 through which the inner member 35 is inserted and faces the tip surface 37 of the inner member 35 from the outside in the vehicle width direction, and intersects the central axis of the inner member 35. It is provided so that it can be relatively displaced in the plane. Then, the displacement detection unit 40A detects the relative displacement between the tip surface 37 and the closing plate 33 in the intersection surface caused by the bending and deformation of the external pipe 31 with respect to the internal member 35.

With this configuration, the displacement detection unit 40A is closed to the tip surface 37 in the intersection surface intersecting the central axis C of the internal member 35, which is caused by the bending and deformation of the external pipe 31 with respect to the internal member 35. The relative displacement with the plate 33 is detected. Thereby, the relative displacement of the outer pipe 31 with respect to the inner member 35 can be detected without displacement of the entire outer pipe 31 with respect to the inner member 35. Therefore, when the operator manually pushes the operating device 30A, even if the external pipe 31 does not cause a large relative displacement with respect to the internal member 35, the internal member 35 and the external pipe 31 due to the bending of the external pipe 31. The relative displacement can be detected with high sensitivity by the displacement detection unit 40A.
This makes it possible to enhance the feeling of operation in the operating device 30A and the detection sensitivity in the displacement detecting unit 40A when the operation is performed.

Further, the internal member 35 has a hollow tubular shape or a solid rod shape, and the outer pipe 31 closes the tubular portion 32 that covers the outer peripheral surface of the inner member 35 in the radial direction and the inside of the tubular portion 32. It has a closing plate 33 formed as described above. Further, the displacement detection unit 40A detects the relative displacement between the tip surface 37 and the block plate 33 at the portion where the tip surface 37 of the internal member 35 and the block plate 33 of the external pipe 31 face each other.
According to such a configuration, the entire internal member 35 is surrounded by the external pipe 31, and it is possible to prevent sand, dust, water, etc. from entering between the external pipe 31 and the internal member 35 from the outside. be able to.

Further, the blocking plate 33 faces the tip surface 37 of the internal member 35 from the outside in the vehicle width direction. Then, the displacement detection unit 40A detects the relative displacement of the external pipe 31 with respect to the internal member 35 at the portion where the tip surface 37 of the internal member 35 and the closing plate 33 of the external pipe 31 face each other. Thereby, the relative displacement in the intersection surface between the internal member 35 and the external pipe 31 can be detected with higher sensitivity on the outer side in the vehicle width direction with respect to the internal member 35.

Further, the displacement detection unit 40A is provided at a portion where the tip surface 37 of the internal member 35 and the closing plate 33 of the external pipe 31 face each other. As a result, it is not necessary to provide the displacement detection unit 40A between the outer peripheral surface of the inner member 35 and the inner peripheral surface of the outer pipe 31, and the outer pipe 31 bulges outward in the radial direction in order to provide the displacement detection unit 40A. Can be suppressed.
Further, as the displacement detection unit 40A, a so-called magnetic sensor including a displacement sensor 41 and a magnet 42 is adopted. Therefore, the displacement detection unit 40A has a simple structure, and even if dust, water, or the like intrudes, the displacement detection unit 40A can be prevented from malfunctioning.

Further, in the operating device 30A, the internal member 35 includes a displacement regulating unit 36 that regulates the amount of relative displacement of the external pipe 31 with respect to the internal member 35 in the intersection.
According to such a configuration, it is possible to suppress an excessive relative displacement of the external pipe 31. Therefore, it is possible to prevent the external pipe 31 from being plastically deformed when an excessive external force is applied.

Further, the internal member 35 and the displacement detection unit 40A are provided at both ends of the external pipe 31 in the vehicle width direction, and one end 35a of the internal member 35 on the vehicle width direction intermediate portion side is fixed to the external pipe 31. , The tip portion 35b on the end side in the vehicle width direction has a gap S1 in the radial direction intersecting the central axis C of the internal member 35 with the outer pipe 31.
According to such a configuration, when the operator manually pushes both ends of the external pipe 31 in the vehicle width direction, the external pipe 31 is on the tip end portion 35b side of the internal member 35 having a gap S1 in the radial direction. That is, the bending deformation with respect to the internal member 35 occurs on the end side in the vehicle width direction. As a result, the relative displacement of the outer pipe 31 with respect to the inner member 35 can be detected with higher sensitivity on the tip end portion 35b side of the inner member 35.

(Modified example of the first embodiment)
In the above embodiment, the displacement sensor 41 that detects the relative displacement between the external pipe 31 and the internal member 35 by detecting the change in the magnetic field of the magnet 42 is used as the displacement detecting unit 40A, but the present invention is not limited to this.

FIG. 7 is a cross-sectional view showing the displacement detection unit 40B of the operating device in the modified example of the first embodiment of the present invention.
As shown in the figure, the camera 45 may be used as the displacement detection unit 40B. The camera 45 is provided on the tip surface 37 of the internal member 35, and includes an image sensor 46, a lens 47, and a light source 48. The image sensor 46 includes an image sensor such as a CMOS (Complementary Metal Oxide Semiconductor) image sensor.

The image sensor 46 is housed in a recess 37s formed in the tip surface 37. The lens 47 is provided in the recess 37s so as to cover the front of the image sensor 46 in the imaging direction. The lens 47 adjusts the focus of the image or video captured by the image sensor 46. The light source 48 is embedded in the tip surface 37, and irradiates the closing plate 33 facing the tip surface 37 with light having an illuminance that can be imaged by the image sensor 46.
A subject 49 is provided at a position of the block plate 33 facing the image sensor 46. The subject 49 is formed with, for example, marks (not shown) such as grids and dots extending in two directions orthogonal to each other. The displacement detection unit 40B detects the relative displacement of the external pipe 31 with respect to the internal member 35 by imaging the mark formed on the subject 49 with the image sensor 46.

By using such a displacement detection unit 40B, it is possible to enhance the operation feeling in the operation device 30A and the detection sensitivity when the operation is performed, as in the first embodiment.

(Second embodiment)
Next, with reference to FIGS. 1 and 3, the operation device 30C according to the second embodiment and the electrically assisted silver car 10 provided with the operation device 30C will be described with reference to FIG. In the second embodiment described below, the same components as those in the first embodiment are designated by the same reference numerals in the drawings, and the description thereof will be omitted.
FIG. 8 is a cross-sectional view of the operating device according to the second embodiment of the present invention, which is cross-sectionally viewed along the central axis thereof.

(Operating device)
As shown in FIG. 1, the operating device 30C provided in the electrically assisted silver car 10 is provided at the upper end of the back frame 11b of the frame 11.
As shown in FIG. 8, the operating device 30C is provided at the upper end of the back frame 11b of the frame 11 by welding or via an appropriate bracket or the like, and is provided with a cylindrical handle body 64 extending in the vehicle width direction. , An external pipe 61 extending from both ends of the handle body 64 in the vehicle width direction, an internal member 65 inserted into the handle body 64, and a displacement detection unit 40A (see FIG. 3) similar to the first embodiment. , Is mainly provided.

The outer pipe 61 is inside the tubular portion 62 at a position separated by a predetermined dimension from the cylindrical tubular portion 62 extending from both ends of the handle main body 64 in the vehicle width direction and the end portion of the tubular portion 62 on the handle main body 64 side. It has a hollow sealed structure having a closing plate 63 for closing the above. Here, the block plate 63 is fixed to the tubular portion 62 by screwing, fitting, welding, or the like.

The internal member 65 has a hollow tubular shape or a solid rod shape, and has a diameter-expanded portion 66 whose diameter is expanded outward in the radial direction at the central portion in the length direction. The internal member 65 is fixed to the handle body 64 by press-fitting the enlarged diameter portion 66 into the handle body 64. That is, the internal member 65 is composed of a diameter-expanded portion 66 fixed to the steering wheel main body 64 and an extension portion 65c extending outward in the vehicle width direction from the diameter-expanded portion 66. The outer diameter of the extending portion 65c is set to be smaller than the inner diameter of the handle body 64 and the inner diameter of the outer pipe 61 by a predetermined dimension. That is, in the extending portion 65c of the internal member 65, the tip portions 65s on both sides in the vehicle width direction have a gap S2 in the radial direction between the inner peripheral surface of the handle body 64 and the inner peripheral surface of the outer pipe 61. ing. As a result, the outer pipe 61 can be displaced relative to the inner member 65 within the range of the gap S2 and in the intersection orthogonal to the central axis C of the inner member 65.
Here, the blocking plate 63 of the outer pipe 61 is arranged at the tip portions 65s on both sides of the internal member 65 in the vehicle width direction so as to face the tip surface 67 facing the outside in the vehicle width direction from the outside in the vehicle width direction. ing.

Further, the internal member 65 can be formed of, for example, an aluminum alloy. The outer pipe 61 can be formed of carbon fiber reinforced plastic (CFRP), an aluminum alloy, or the like.

The displacement detection unit 40A is provided so as to detect the relative displacement between the tip surface 67 and the block plate 63 at the portion where the tip surfaces 67 on both sides of the internal member 65 in the vehicle width direction and the block plate 63 of the external pipe 61 face each other. Has been done. As such a displacement detection unit 40A, a displacement sensor 41 and an image sensor 46 can be used as in the first embodiment and its modification.

Further, it is preferable to provide a cover member 50 that covers a region through which the internal member 65 is inserted, at least inside the outer pipe 61, on the radial outer side of the outer pipe 61. The cover member 50 may be provided only on the upper side of the outer pipe 61, or may be formed in a tubular shape so as to cover the region of the outer pipe 61 through which the inner member 65 is inserted so as to cover the entire circumferential direction.

(Operation of operating device)
In the operating device 30C as described above, when the operator manually pushes and pulls the portions of the grip members 15 provided at both ends of the outer pipe 61 of the operating device 30C in the vehicle width direction in the front-rear direction, the internal member 65 is pressed. , The outer pipe 61 is relatively displaced in the intersecting surface intersecting the central axis C of the inner member 65. At this time, the outer pipe 61 is displaced relative to the tip portions 61s on both sides of the inner member 65 in the vehicle width direction, mainly in the front-rear direction.

When the outer pipe 61 is displaced relative to the inner member 65, the displacement detection unit 40A provided on the tip surface 67 detects the relative displacement amount and the relative displacement direction of the outer pipe 61 with respect to the inner member 65. When the detection signal in the displacement sensor 41 is output to the control device (not shown) via the signal wiring (not shown), the control device detects the displacement sensor 41 as shown in the first embodiment. The operation of the motor or the like constituting the drive device 21 is controlled based on the relative displacement amount and the relative displacement direction of the external pipe 61.

As described above, in the above-mentioned operating device 30C and the electrically assisted silver car 10, displacement detection for detecting the relative displacement between the tip surface 67 and the closing plate 63 caused by the bending and deformation of the external pipe 61 with respect to the internal member 65. A unit 40A is provided. The displacement detection unit 40A detects the relative displacement between the tip surface 67 and the closing plate 63 caused by the bending and deformation of the external pipe 61 with respect to the internal member 65. According to such a configuration, the same effect as that of the above-described first embodiment can be obtained.

That is, the relative displacement of the outer pipe 61 with respect to the inner member 65 can be detected without displacement of the entire outer pipe 61 with respect to the inner member 65. Therefore, when the operator manually pushes the operating device 30C, even if the external pipe 61 does not cause a large relative displacement with respect to the internal member 65, the internal member 65 and the external pipe 61 due to the bending of the external pipe 61. The relative displacement can be detected with high sensitivity by the displacement detection unit 40A.
Therefore, it is possible to enhance the feeling of operation in the operation device 30C and the detection sensitivity in the displacement detection unit 40A when the operation is performed.

Further, the inner member 65 has a hollow tubular shape or a solid rod shape, and the outer pipe 61 closes the tubular portion 62 that covers the outer peripheral surface of the inner member 65 in the radial direction and the inside of the tubular portion 62. It has a closing plate 63 formed as described above. The displacement detection unit 40A detects the relative displacement between the tip surface 67 and the block plate 63 at the portion where the tip surface 67 of the internal member 65 and the block plate 63 of the outer pipe 61 face each other.
According to such a configuration, the entire internal member 65 is surrounded by the external pipe 61, and dust, water, etc. are surely suppressed from the outside between the external pipe 61 and the internal member 65. be able to.

Further, the blocking plate 63 faces the tip surface 67 of the internal member 65 from the outside in the vehicle width direction. Then, the displacement detection unit 40A detects the relative displacement of the outer pipe 61 with respect to the inner member 65 at the portion where the tip surface 67 of the inner member 65 and the closing plate 63 of the outer pipe 61 face each other. As a result, the relative displacement between the internal member 65 and the external pipe 61 can be detected with higher sensitivity on the outer side in the vehicle width direction with respect to the internal member 65.
Further, the displacement detection unit 40A is provided at a portion where the tip surface 67 of the internal member 65 and the closing plate 63 of the external pipe 61 face each other. As a result, it is not necessary to provide the displacement detection unit 40A between the outer peripheral surface of the inner member 65 and the inner peripheral surface of the outer pipe 61, and the outer pipe 61 bulges outward in the radial direction in order to provide the displacement detection unit 40A. Can be suppressed.

Further, the outer pipe 61 has a lower rigidity than the inner member 65.
According to such a configuration, when the operator manually pushes the outer pipe 61, the outer pipe 61 is surely displaced relative to the inner member 65. As a result, when the operator manually pushes the external pipe 61, the relative displacement can be detected with high sensitivity.

Further, the internal member 65 is provided in the middle portion of the outer pipe 61 in the vehicle width direction, and the internal member 65 is fixed to the outer pipe 61 at the central portion of the length in the vehicle width direction and is directed toward both sides in the vehicle width direction. The extending tip portion 61s has a gap S2 in the radial direction between the extending tip portion 61s and the outer pipe 61. Further, the blocking plate 63 is provided on the outer side in the vehicle width direction with respect to the tip surfaces 67 formed on the tip portions 65s on both sides of the internal member 65 in the vehicle width direction.
According to such a configuration, the same effect as that of the above-described first embodiment can be obtained. Further, when the operator manually pushes both ends of the external pipe 61 in the vehicle width direction, the displacement due to the bending deformation of the external pipe 61 is more sensitive to the tip portions 65s side of both sides of the internal member 65 in the vehicle width direction. Can be detected.

Further, the operating device 30C is provided with a cover member 50 that covers a region in which the internal member 65 is inserted, at least inside the outer pipe 61, on the outer side in the radial direction of the outer pipe 61.
According to such a configuration, when the operating device 30C is irradiated with sunlight, it is possible to prevent the external pipe 61 from rising in temperature and being thermally deformed. Therefore, it is possible to suppress the influence of heat due to sunlight irradiation and perform highly sensitive detection of the displacement of the external pipe 61.

(Other embodiments)
The present invention is not limited to the above-described embodiments, and includes various modifications to the above-described embodiments without departing from the spirit of the present invention.

For example, as shown in FIG. 9, as the displacement detection unit 40D of the operating device 30A, a strain gauge 71 can be used between the inner peripheral surface of the outer pipe 31 and the outer peripheral surface of the inner member 35.

Further, as shown in FIG. 10, grips extending rearward at both ends in the vehicle width direction of the operating devices 30A and 30C shown in the above-described embodiment (in FIG. 10, the operating device 30A is exemplified). The member 85 may be provided. In such a configuration, when the grip member 85 is pushed by hand, a pressing force acts on both ends of the operating device 30A to which the grip member 85 is connected in the vehicle width direction, causing a relative displacement of the outer pipe 31 with respect to the inner member 35.

Further, in the above-described embodiment, the external pipes 31 and 61 of the operating devices 30A and 30C are pushed and pulled in the front-rear direction, that is, the external pipes 31 and 61 are pushed and pulled in the radial direction to form the internal members 35 and 65. On the other hand, a case where the external pipes 31 and 61 having low rigidity are relatively displaced in the intersection surface intersecting the central axes C of the internal members 35 and 65 has been described. However, the present invention is not limited to this, and the external pipes 31 and 61 are pushed and pulled in the axial direction, whereby the internal members 35 and 65 are located at the locations corresponding to the displacement detection units 40A, 40B and 40D of the external pipes 31 and 61. It may be configured to be displaced relative to the intersection plane intersecting the central axis C of.

Further, in the above-described embodiment, the configuration of the electrically assisted silver car 10 has been described. However, the present invention is not limited to this, and the configuration thereof is only an example, and the configuration of each part can be appropriately changed.

Further, in the above-described embodiment, the electrically assisted silver car 10 is taken as an example as the hand-pushing moving body. However, the present invention is not limited to this, and the present invention can be similarly applied to strollers, shopping carts, rehabilitation walking vehicles, carts, and the like.
In addition to this, as long as the gist of the present invention is not deviated, the configuration described in the above embodiment can be selected or changed to another configuration as appropriate.

10 ... Electric assist silver car (hand-pushed moving body)
30A, 30C ... Operating device 31,61 ... External pipe (external member)
31s ... End 32 ... Cylindrical portion 33, 63 ... Blocking plate (opposing surface)
34, 64 ... Handle body 35, 65 ... Internal member 35a ... One end (fixed part)
35b ... Tip 35c, 65c ... Extension 36 ... Displacement regulation 37, 67 ... Tip surface 40A ... Displacement detection (magnetic sensor)
40B, 40D ... Displacement detection part 50 ... Cover member 61s ... Tip part 62 ... Cylindrical part 65s ... Tip part 66 ... Diameter expansion part (fixed part)
C ... Central axis S1, S2 ... Gap

Claims (9)

A tubular handle body that extends in the vehicle width direction provided on the hand-pushed moving body,
The internal member provided on the handle body and
An external member provided on the handle body and surrounding the internal member, and
A displacement detection unit provided inside the external member and detecting the displacement of the external member with respect to the internal member.
With
The inner member has a fixing portion fixedly fitted to the inner peripheral surface of the handle main body is provided at one end, and extending portion extending from the fixed portion that protrudes from one end of the handle body, the ,
The external member is integrally molded with the handle body and extends from the one end of the handle body, and the extending portion of the internal member is externally encapsulated through a gap, and the inside of the tubular portion. operating device characterized in that it have a, a closing plate which is formed so as to close the. The external member has an opposing surface facing the tip surface of the internal member opposite to the handle body, and is provided so as to be relatively displaceable in an intersecting surface intersecting the central axis of the internal member.
Claim 1 is characterized in that the displacement detecting unit detects a relative displacement between the tip surface and the facing surface in the intersecting surface caused by bending and deforming the external member with respect to the internal member. operating device according to. The internal member has a hollow tubular shape or a solid rod shape.
The external member has a tubular portion and the facing surface formed so as to close the inside of the tubular portion.
2. The displacement detecting unit is characterized in that it detects a relative displacement between the tip surface and the facing surface at a portion where the tip surface of the internal member and the facing surface of the external member face each other. The operating device described in. The second or third aspect of the present invention, wherein at least one of the external member and the internal member includes a displacement regulating portion that regulates a relative displacement amount of the external member with respect to the internal member in the intersection. Operation device. The displacement detection unit is provided on each of the front end surface of the internal member and the facing surface of the external member, and is also provided.
The other end of the internal member opposite to the tip surface is fixed to the external member, and the end on the tip surface side has a radial gap between the internal member and the external member that intersects the central axis. The operating device according to any one of claims 2 to 4, wherein the operating device is provided. The external member is formed so as to extend from both ends of the steering wheel body in the vehicle width direction.
The internal member is provided at an intermediate portion of the handle body in the vehicle width direction, and is fixed to the handle body at the center of the length in the vehicle width direction and extends toward both sides in the vehicle width direction. parts are operating device according to any one of claims 5 that claim 1, characterized in that a gap in the radial direction crossing the center axis of the inner member between the outer member. Radially outwardly of the outer member, one of claims 1 to 6, wherein a cover member for covering the region where the inner member to the inside of at least the outer member is inserted is provided 1 The operating device according to the section. The displacement detecting unit, the operating device according to any one of claims 7 claim 1, characterized in that a magnetic sensor. A hand-pushed mobile body provided with the operating device according to any one of claims 1 to 8.

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