JP2001030772A - Wheel motor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wheel motor that can be quickly moved to places which are not obstructive to work and the passage of other vehicles or a place for charging a battery by unlocking the wheel with easy operation when the battery is dead. SOLUTION: A wheel motor 100 has a motor main body 10 with a motor mounted inside and a rotation shaft projecting from both ends thereof, a wheel 40 connected to one side of the rotation shaft (output shaft 20a), and a brake portion 30 connected to the other side of the rotation shaft. The wheel 40 comprises a hub 41 fixed to the rotation shaft, a housing 43 rotatably mounted with respect to the hub 41 via bearings 42a, 42b, rims 44a, 44b clamping a wheel member 47 and mounted at one side of the housing 43, and detachable bolts 46a to 46c for coupling and securing the hub 41 and housing 43.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wheel motor, and more particularly, to a wheel motor applied as a traveling drive means for a self-propelled electric vehicle such as a golf cart, a serving truck, or an unmanned transport truck for industrial use.

[0002]

2. Description of the Related Art Conventionally, leisure, medical welfare, or
2. Description of the Related Art In the field of the manufacturing industry, there is known an electric vehicle that includes a so-called wheel motor in which wheels are directly connected to an electric motor as a traveling drive unit and that travels in a self-propelled manner using electric power supplied from a battery power supply. Generally, a wheel motor applied to such a self-propelled electric vehicle (hereinafter, simply referred to as an electric vehicle) rotates a rotating shaft to which wheels are attached when the electric vehicle is not running (at a stop). In order to prevent inadvertent running (movement) of the vehicle, a lock device such as an electromagnetic brake is provided.

FIG. 7 to FIG. 9 briefly show a schematic configuration of a wheel motor conventionally applied to an electric vehicle. As shown in FIG. 7, the wheel motor 100 is roughly divided into a motor unit 10 in which a motor unit is provided and a rotating shaft protruding at both ends, and a reduction gear connected to one side of the rotating shaft projecting from the motor body 10. The storage unit 20 includes a brake unit 30 connected to the other side of the rotating shaft projecting from the motor body 11, and wheels 40 connected to an output shaft projecting from the reduction gear housing 20. I have.

[0004] As shown in FIG. 8, the motor main body 10 is provided on the side of the reduction gear storage section 20 and the brake section 30.
A rotating shaft 12 rotatably mounted via bearings 11a and 11b, and an armature 13 mounted on the rotating shaft 11, respectively.
And a magnet 14 attached to the body case 10a at a position corresponding to the armature 13, a commutator 15 attached to the rotating shaft 12, and a brush 16 attached to a position corresponding to the commutator 15. An electromagnet formed by flowing a predetermined current through the armature 13;
The rotation of the rotary shaft 12 is realized using the repulsive force of the rotary shaft 4.

[0005] The reduction gear housing 20 is connected to a group of gears combined at a predetermined gear ratio on one side of a rotating shaft 12 protruding from the motor main body 10, so that the basic rotational speed and rotational torque of the motor main body 10 can be reduced. The rotation is output to the output shaft 20a as a rotation operation having a desired rotation speed and output torque. Details will be described later. Further, the reduction gear housing 20 is provided with a mounting part 21 for mounting and fixing the wheel motor 100 to the vehicle body 200. A rim or bracket for supporting the wheel 40 is directly connected to the output shaft 20a, and the rotation of the output shaft 20a is transmitted to the wheel 40 as it is.

[0008] As shown in FIG. 8, the brake portion 30 is housed in a yoke 31 fixed to the main body case 10 a on the other side of the rotary shaft 12 protruding from the motor main body 10 and a groove formed in the yoke 31. The coil 32, a braking pin 33 fixed to the yoke 31 side, an armature 35 slidably mounted on the braking pin 33 via a biasing spring 34 in the direction in which the rotating shaft 12 extends, meshes with the inner peripheral surface. Meshing plate 36a and plate 36 on which teeth are formed
and a gear 37 fixed to the rotating shaft 18 and engaged with the meshing teeth of the meshing plate 36a in a non-magnetized state.

The wheel motor 100 having such a configuration
In the case where the electric vehicle is driven, first, as shown in FIG.
A current is caused to flow down to an electromagnet, and the armature 35 is attracted to the coil 32 against the spring force of the biasing spring 37, thereby removing the pressing force of the armature 35 (the biasing spring 37) against the engagement plate 36 a. Then, the brake is released and the engagement plate 36a, that is, the rotation of the rotating shaft 12 is freely rotated. Next, the current is caused to flow down to the armature 19 attached to the rotating shaft 12, thereby rotating the rotating shaft 12, transmitting the rotation at a predetermined rotation speed and output torque via the reduction gear housing 20, and The electric vehicle is caused to travel by rotating the electric vehicle 40.

[0008]

However, when the above-described wheel motor is applied to an electric vehicle, when the remaining amount of battery power is "0" (so-called dead battery), as shown in FIG. The current to the coil 32 of the brake unit 30 is cut off, the function as an electromagnet is lost, and the armature 35
Presses the meshing plate 36a to prevent its rotation. Therefore, the meshing teeth formed on the inner peripheral surface of the meshing plate 36a mesh with the gear 37, and the rotation of the rotary shaft 12 is suppressed (impossible), and the lock state is established, and the golf cart, the serving cart, and the automatic guided cart are used. And the like have a problem that the electric vehicle gets stuck in a course or a passage.

At this time, since the wheel motor 100 is in a state where the brake is applied and the wheel 40 does not roll,
There is a problem that the stuck electric vehicle cannot be easily moved, and may cause obstacles to other traffic or work. Specifically, for example, as shown in FIG. 10, when a wheel motor is applied to a serving truck 300 used in a medical facility (hospital or the like), a bogie having a length of several meters is placed in a hospital corridor due to a rise in battery. He was stuck and could be a significant obstacle to medical practice. Note that FIG.
, 301 is a bogie main body, 302 is a warming / cooling keeping section,
Reference numeral 303 denotes a travel control unit, 304 denotes a front wheel, 305 denotes a rear wheel, and 306 denotes a drive unit containing the individual electric motors 100a and 100b. In addition, when the present invention is applied to a golf cart, a golf set must be carried along the way to the club house, which imposes a heavy burden on the player.

[0010] Such a problem becomes more remarkable when a power supply for charging the battery is not in the vicinity, and even if the power supply is arranged in the near field, the problem of the battery is not increased. Since a considerable charging time is required until the power supply capacity recovers, it is inevitable that any other traffic or work will be affected in any case. In view of such problems, the present invention releases the locked state of the wheels by a simple operation when the battery goes up during use of the electric vehicle, and does not hinder other traffic or work. It is an object of the present invention to provide a wheel motor that can be quickly moved to a place or a battery charging place.

[0011]

According to a first aspect of the present invention, there is provided a wheel motor in which a motor mechanism is provided and a rotating shaft protrudes from both ends, and the rotating member protrudes from one end of the rotating case. A brake portion for stopping and controlling rotation of a shaft, a hub member attached to the rotating shaft projecting from the other end of the case body, a wheel rotatably attached to the hub member, and the hub member And a detachable locking member for matching the rotation state of the wheel.

[0012] The wheel motor according to the second aspect of the present invention,
A case body in which a motor mechanism is provided, and a rotation shaft protrudes from both ends, a brake unit that stops and controls the rotation of the rotation shaft that protrudes from one end of the case body, and protrudes from the other end of the case body. A hub member attached to the rotation shaft, a housing member rotatably attached to the hub member, a wheel supported and fixed to the housing member, and the rotating state of the hub member and the wheel matched. And a detachable locking member.

[0013] The wheel motor according to the third aspect of the present invention,
A case body in which a motor mechanism is provided, and a rotation shaft protrudes from both ends, a brake unit that stops and controls the rotation of the rotation shaft that protrudes from one end of the case body, and protrudes from the other end of the case body. A reduction unit connected to the rotating shaft;
A hub member attached to an output shaft protruding from the deceleration portion, a wheel rotatably attached to the hub member, and a detachable locking member for matching the rotation state of the hub member and the wheel; , Is characterized by having.

According to a fourth aspect of the present invention, there is provided a wheel motor.
A case body in which a motor mechanism is provided, and a rotation shaft protrudes from both ends, a brake unit that stops and controls the rotation of the rotation shaft that protrudes from one end of the case body, and protrudes from the other end of the case body. A reduction unit connected to the rotating shaft;
A hub member attached to an output shaft projecting from the deceleration portion, a housing member rotatably attached to the hub member, a wheel supported and fixed to the housing member, and a hub member and the wheel. And a detachable locking member for matching the rotation state.

According to a fifth aspect of the present invention, a wheel motor is provided.
The wheel motor according to any one of claims 1 to 4, wherein the locking member is a detachable fastening member that fixedly connects the hub member and the wheel. The wheel motor according to the invention according to claim 6 is the invention according to claims 1 to 4.
In the wheel motor according to any one of the above, the case body is provided with a mounting portion that can be mounted on a vehicle body. According to a seventh aspect of the present invention, in the wheel motor according to the second or fourth aspect, the wheel is supported and fixed to the housing via a rim member. According to an eighth aspect of the present invention, in the wheel motor according to the second or fourth aspect, the housing member is rotatably attached to the hub member via a bearing member. And

[0016]

Embodiments of the present invention will be described below with reference to the drawings. <First Embodiment> FIG. 1 is a schematic configuration diagram showing a first embodiment of a wheel motor according to the present invention. Here, the same components as those of the above-described related art are denoted by the same reference numerals, and description thereof will be simplified. As shown in FIG.
The wheel motor 100 according to the present embodiment includes at least a motor body (case body) 10 having a motor unit (motor mechanism) therein and having a rotating shaft protruding from both ends, and one side of the rotating shaft (output shaft 20a). The wheel 4 includes a wheel 40 connected thereto and a brake unit 30 connected to the other side of the rotation shaft.
0 is a hub (hub member) 41 fixed to the rotating shaft, a housing (housing member) 43 rotatably attached to the hub 41 via bearings 42a and 42b,
A group of bolts (locking members, fastening members) 45a to 45c, 46a to
A pair of rims 44a, 44b fastened by 46c,
Is configured.

Here, the motor body 10 and the brake unit 3
The configuration and operation of 0 are the same as those of the above-described conventional configuration (see FIGS. 8 and 9), and a description thereof will be omitted. Further, in the present embodiment, the reduction gear is not necessarily an essential configuration, and at least a wheel is directly or indirectly connected to a rotation shaft whose rotation is suppressed by a braking action, and the rotation is transmitted. Should be fine.

Hereinafter, the wheel 40 which is a feature of the present embodiment will be described in more detail. The hub 41 has an inner peripheral hole that is in close contact with substantially the entire length of the output shaft 20a (or the rotating shaft) protruding from the motor body 10, and has a key member 20b defined based on the diameter of the output shaft 20a.
As a result, it is also fixed in the rotation direction. In addition, hub 41
A disk-shaped flange portion is formed on the outer periphery of the disk in a direction perpendicular to the output shaft 20a. Here, the hub 41 is connected to the output shaft 20 via a step provided in the inner peripheral hole and a washer for retaining.
By fixing the bolt to a bolt hole formed in the shaft core of the shaft a, the positional relationship in the direction of the output shaft 20a (the left-right direction in the drawing) is maintained, and dropping from the output shaft 20a is prevented.

The housing 43 is a bearing (bearing member) such as a ball bearing, a roller bearing, or a metal bush.
It is rotatably attached to the hub 41 via 42a and 42b. Further, a disk-shaped flange portion facing the flange portion of the hub 41 is formed on the outer periphery of the housing 43. Here, the housing 43 and the hub 4
Each of the flange portions formed in 1 may have surfaces in close contact with each other in an assembled state,
It may have a surface that is separated with a slight gap. That is, as described later, the output shaft 20
When the a (hub 41) is in the locked state, the housing 43 side is formed to smoothly rotate by the bearings 42a and 42b.

The reason why the bearings 42a and 42b are arranged in two rows is to distribute the load to the wheels and realize a smooth rotation operation. Further, by locking one of the bearings (the bearing 42b) with a blocking ring 42c such as a snap ring or an E-ring, the positional relationship between the housing 43 and the hub 41 in the direction of the output shaft 20a (the horizontal direction in the drawing) is maintained. , From the hub 41.

The rims 44a and 44b are shown in FIG.
As shown in (b), the donut-shaped wheel member 47 is sandwiched and supported, and is bolted to one surface side (the right side in the drawing) of the housing 43. Here, the rim 44
The bolts for fixing the rims 44a and 44b only to the housing 43 in three directions equally dividing the center of the wheel member 47 and the rims 44a and 44b are provided. Groups 45a-45c
The rims 44a, 44b are mounted on the housing 4 in three directions equally divided with respect to the center of the wheel member 47 and the rims 44a, 44b and in the center of the gap between the bolt groups 45a to 45c.
It consists of bolt groups 46a to 46c which are fixed to the hub 41 only through the three through holes.

That is, the wheel member 47 and the rim 44a,
44b is fastened and fixed to the housing 43 only by the bolt groups 45a to 45c, and the rims 44a, 44b and the housing 43 are co-tightened to the hub 41 by the removable bolt groups 46a to 46c. . The wheel member 47 may be, for example, a rubber tire, a urethane tire, which will be described later, or a pneumatic tire, depending on the weight of the electric vehicle and the on-vehicle object, the state of the traveling road surface, or when traveling on a rail. , A metal wheel can be applied.

Next, a case where the above-described wheel motor is mounted on an electric vehicle and driven to run by a battery power supply will be described with reference to the drawings. FIG. 2 is a schematic diagram for explaining the operation in the present embodiment. First,
When a normal traveling operation is performed, as shown in FIG. 8, the brake unit 30 is controlled to turn the coil 32 into an electromagnet, and the meshing plate 3 fixed to the rotating shaft 12 of the motor body 10.
The armature 35 that has pressed the 6a by the spring force of the urging spring 37 is attracted to the coil 32 side to release the braking action on the rotating shaft 12, and then the current flows down to the armature 19 , The rotating shaft 12 is rotated.

The rotation output is output via an output shaft 20a.
Hub 41 fixed to output shaft 20a, bolt group 46a-
A housing 43 integrally connected to the hub 41 by 46c, bolt groups 45a to 45c, and bolt groups 46a to 46
The rotation is transmitted to the entire wheel 40 including the wheel member 47 and the rims 44a and 44b fixed to the housing 43 by 6c, and the rotation operation is performed in accordance with the rotation state of the output shaft 20a. On the other hand, when power is no longer supplied from the battery power source to the wheel motor due to a dead battery or the like, as shown in FIG. 9, the current to the coil 32 of the brake unit 30 is cut off, and the function as an electromagnet is lost. Amateur 3
5 presses the meshing plate 36a by the spring force of the urging spring 34, and the rotation of the rotating shaft 12 is locked. Therefore, the rotating shaft 12 (output shaft 20a)
Are prevented from rolling, and the electric vehicle cannot be easily moved manually.

Therefore, in the present embodiment, as shown in FIG.
By removing the bolt groups 46a to 46c that connect and fix the hub 41 and the housing 43, the connection state between the hub 41 and the housing 43 is released, and the housing 43 is freely rotated by the bearings 42a and 42b with respect to the hub 41. Become. At this time, since the wheel member 47 and the rims 44a and 44b are fastened and fixed to the housing 43 by the bolt groups 45a to 45, the housing 43 that rotates with respect to the hub 41
And rotate together.

Therefore, the output shaft 2 of the wheel motor 100
0a (rotary shaft 12) is locked by the braking action, the rims 44a, 44b and the housing 4
3 are removed from the outside of the wheel motor (right side in the drawing: the side opposite to the motor mounting side) to remove the wheels 40 (housing 43, rim 44).
a, 44b, and the wheel member 47) can be freely rotated, so that the electric vehicle stuck due to a dead battery or the like can be easily moved, and does not block a course or a passage for a long time. Traffic and work will not be affected.

More specifically, for example, in a serving truck as shown in FIG. 10, when the battery has risen and the battery has been stuck in the middle of the passage, the side surface of the truck main body 301 (up and down of FIG. Direction) from the wheel motor 100
a, 100b wheels (housing 43, rims 44a, 4
4b, the wheel members 47) are fixed to the hub 41 by removing the bolt groups 46a to 46c.
0 (housing 43, rims 44a, 44b, wheel member 4
Since only 7) can be freely rotated, the electric vehicle can be easily moved manually.

In the above-described embodiment, the rotation of the rotation shaft of the motor body 10 is controlled by the output shaft 20 via the reduction gear.
may be output to a. Hereinafter, the reduction gear will be described with reference to the drawings. FIG. 3 is a schematic configuration diagram in a case where a motor having a reduction gear storage section is applied to the present embodiment. As shown in FIG. 3, the reduction gear housing (reduction part) 20 has a gear 22 having a predetermined number of teeth formed on the tip end portion 12 a of the rotating shaft 12 and a different number of teeth formed on the same shaft. Planetary gears 23a, 23b and output shaft 2
A gear 24 having a predetermined number of teeth formed at 0a.
2, 23a, 23b, and 24 have a predetermined number of rotations and an output torque set by the gear ratio of each other.
0a and transmitted to the wheels 40 of the present embodiment described above.

Therefore, it is possible to select and mount a wheel motor capable of driving and driving at an appropriate rotation speed and output torque in accordance with the weight and the running speed of the electric vehicle, and to mount the output shaft 20a (rotating shaft). Even when 12) is locked by the braking action, only the wheels 40 can be freely rotated, and the electric vehicle stuck due to a dead battery or the like can be easily moved.

<Second Embodiment> FIG. 4 is a schematic diagram showing a second embodiment of the wheel motor according to the present invention.
Here, the same components as those in the above-described embodiment (FIG. 1) are denoted by the same reference numerals, and description thereof will be simplified. The wheel motor 100 according to the present embodiment has, similarly to the configuration shown in FIG. 1, at least a motor body 10 in which a motor unit is installed and a rotation shaft projects from both ends, and one side of the rotation shaft (the output shaft 20 a ), And a brake unit 30 connected to the other side of the rotating shaft. In particular, as shown in FIGS.
0a, and a bearing 4 with respect to the hub 41.
A housing 48 which is rotatably mounted via 2a and 42b and has a wheel member 49 formed on an outer peripheral portion;
1 and the housing 48 for connecting and fixing the bolts 46a-
46c.

Here, in the present embodiment, a wheel motor having a configuration in which the wheel 40 is directly or indirectly connected to the rotating shaft whose rotation is suppressed by at least the braking action and the rotation thereof is transmitted. The speed reducer is not necessarily an essential component, but as shown in the above-described embodiment (FIG. 3), the speed reducer includes the speed reducer according to the traveling performance required of the electric vehicle equipped with the wheel motor. Things may be applied.

Hereinafter, the wheel 40, which is a feature of the present embodiment, will be described in more detail. The hub 41 has an inner peripheral hole that is in close contact with almost the entire length of the output shaft 20a protruding from the motor body 10, and is also fixed in the rotational direction by a key member 20b, similarly to the above-described embodiment (FIG. 1). I have. The housing 48 is connected to the hub 41 via bearings 42a and 42b such as bearings and metal bushes.
It is mounted so as to be rotatable with respect to. The housing 48 has a substantially I-shaped cross section, and a wheel member 49 made of, for example, urethane is formed on the outer peripheral portion by baking. Further, a disc-shaped flange facing the flange of the hub 41 is formed inside the outer periphery. The hub 41 and the housing 48 are connected to the wheel member 4.
9 and detachable bolt groups 46a to 46c arranged in three directions equally divided with respect to the center of the housing 48,
They are interconnected and fixed.

A case where the wheel motor having such a configuration is mounted on an electric vehicle and driven to run by a battery power supply will be described with reference to the drawings. FIG. 5 is a schematic diagram for explaining the operation in the present embodiment. When power is no longer supplied from the battery power source to the wheel motor due to a dead battery or the like, current to the coil 32 of the brake unit 30 is cut off as shown in FIG. Is pressed by the spring force of the urging spring 34 against the engagement plate 36a, and the rotation of the rotating shaft 12 is locked. Therefore, the wheels 40 connected to the rotating shaft 12 (the output shaft 20a) are prevented from rolling, and the electric vehicle cannot be easily moved manually.

At this time, as shown in FIG. 5, by removing the bolt groups 46a to 46c for connecting and fixing the hub 41 and the housing 48 in the wheel 40, the hub 4 is removed.
1 and the housing 48 are disconnected, and the hub 41
In contrast, the housing 43 is freely rotated by the bearings 42a and 42b. Therefore, the wheel motor 1
Even when the output shaft 20a (rotary shaft 12) of the "00" is locked by the braking action, only the wheels 40 (housing 48, wheel members 49) can be freely rotated. The electric vehicle can be easily moved and the wheels 4
0 can be simplified and the number of parts can be greatly reduced.

<Third Embodiment> FIG. 6 is a schematic configuration diagram showing a third embodiment of the wheel motor according to the present invention.
Here, the same components as those in the above-described embodiment are denoted by the same reference numerals, and description thereof will be simplified. The wheel motor 100 according to the present embodiment has the same configuration as that shown in FIG.
At least a motor body 10 in which a motor section is provided and whose rotation shaft projects from both ends, and one side of the rotation shaft (the output shaft 2).
0a), and a brake unit 30 connected to the other side of the rotating shaft.
As shown in FIG. 6A, a housing 41 fixed to the output shaft 20a and a housing rotatably attached to the hub 41 via bearings 42a and 42b, and a wheel member 49 formed on an outer peripheral portion. 48, hub 41 and housing 4
8 are engaged with the through-holes 41a and 48a respectively formed in each of the lock pins 8 to make the rotation states of the two coincide with each other.
and a bracket 50 from which c protrudes.

Hereinafter, the wheel 40, which is a feature of the present embodiment, will be described in more detail. The hub 41 has an inner peripheral hole closely contacting almost the entire length of the output shaft 20a protruding from the motor main body 10 as in the above-described embodiment (FIG. 4), and is also fixed in the rotational direction by a key member 20b. I have. The housing 48 is connected to the hub 41 via bearings 42a and 42b such as bearings and metal bushes.
A wheel member 49 made of, for example, urethane is formed on the outer periphery by baking. Further, a disc-shaped flange facing the flange of the hub 41 is formed inside the outer periphery. Then, in each of the hub 41 and the housing 48, through holes 41a to 41c and 48a to 48c having a predetermined hole diameter are formed at the same positions in three directions equally divided with respect to the center of the circle. Detachable locking pins 51a-51 which are commonly fitted to combinations of 41a-41c and 48a-48c
By c, the hub 41 and the housing 48 are connected and fixed to each other in the rotation direction.

When the wheel motor having such a configuration is mounted on an electric vehicle and driven to run by a battery power source, if power is not supplied from the battery power source to the wheel motor due to a dead battery or the like, FIG. Thus, the current to the brake unit 30 is cut off, the brake is actuated, the rotation of the rotating shaft 12 is locked, the rolling of the wheels 40 is suppressed, and the electric vehicle is easily moved manually. You will not be able to do it.

At this time, as shown in FIG. 6 (b), a locking pin 51a commonly fitted in through holes 41a to 41c and 48a to 48c formed in the hub 41 and the housing 48 of the wheel 40, respectively. By withdrawing through 51c, the connection state in the rotation direction between the hub 41 and the housing 48 is released, and the housing 43 is freely rotated with respect to the hub 41 by the bearings 42a and 42b. Here, the work of extracting the locking pins 51a to 51c is performed by using the bracket 5 formed with the locking pins 51a to 51c protruding.
0 is slid to the outside of the wheel, and through the through holes 41a to 41c and 48a to 48c provided at the three positions,
All the locking pins 51a to 51c can be removed at a time. Although not shown, the bracket 50 is
In the state of being mounted on the wheel 40 (FIG. 6A), it must be mounted by a simple fixing method such as a bolt or a blocking ring in order to prevent falling off, and further requires a special tool. It is desirable that the bracket 50 can be attached and detached without the need.

Therefore, the output shaft 2 of the wheel motor 100
Even if the rotating shaft 0a (rotating shaft 12) is locked by the braking action, only the wheels 40 (housing 48, wheel members 49) can be freely rotated. , The connection structure of the wheels 40 can be simplified, the number of parts can be reduced, and the unlocking operation can be easily performed.

[0040]

According to the first or second aspect of the present invention, a case body in which a motor mechanism is provided and the rotation shaft protrudes from both ends, a brake portion connected to one end of the rotation shaft, and a rotation shaft Wheel connected to the other end of the wheel motor, the wheel is rotatably mounted on a hub member fixed to the rotating shaft, and the rotation state coincides with the hub member When the wheel motor is applied to the electric vehicle, the rotation of the rotating shaft is transmitted to the wheels by the locking member when the wheel motor is applied to the electric vehicle. When the brake is applied to the rotating shaft, the locking member is removed, and the connection between the hub member and the wheel is released, so that only the wheel can be freely rotated. It can be moved both like easily. Therefore, the electric vehicle does not block the course or the passage for a long time, and the influence on other traffic and work can be minimized.

According to the third or fourth aspect of the present invention, there is provided a wheel motor having a brake portion connected to one end of the rotating shaft and the other end of the rotating shaft connected to the wheel via a speed reducing portion. Is rotatably attached to a hub member fixed to a rotating shaft, and is locked by a detachable locking member so that the rotation state matches the hub member. In the normal running state, the rotation of the rotating shaft is transmitted to the wheels at a desired number of times and the output torque by the locking member, while the brake is applied to the rotating shaft due to running out of the battery or the like. By removing the locking member and releasing the connection between the hub member and the wheels, only the wheels can be freely rotated, and the electric vehicle or the like stuck by human power can be easily moved. It can be.

According to the fifth aspect of the present invention, since a detachable fastening member such as a bolt is used as a locking member for matching the rotation state between the wheel and the hub member (rotating shaft), the battery is used. When the brake is applied to the rotating shaft due to rising or the like, the connection state between the wheel and the hub member can be easily released by a general tool, and the unlocking operation of the wheel can be easily performed. According to the sixth aspect of the present invention, since the case body (wheel motor) includes the mounting portion that can be mounted on the vehicle body of the predetermined electric vehicle, the mounting and dismounting of the wheel motor can be easily performed, and The wheel motor according to the present invention, which can easily perform the unlocking operation, can be easily applied to an existing electric vehicle.

According to the seventh aspect of the present invention, the wheel (wheel member) is supported and fixed to the housing portion via the rim member, so that when the wheel member is worn or damaged, the rim is removed. By removing the member, the wheel member can be easily replaced. According to the invention described in claim 8, the housing member is rotatably attached to the hub member via a bearing member such as a bearing or a metal bush. In this case, the locking member is removed, the wheel (housing member) can be freely and smoothly rotated with respect to the hub member, and the stuck electric vehicle or the like can be easily moved manually.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing a first embodiment of a wheel motor according to the present invention.

FIG. 2 is a schematic diagram for explaining an operation in the first embodiment.

FIG. 3 is a schematic configuration diagram in a case where a wheel motor according to the first embodiment is provided with a reduction gear housing.

FIG. 4 is a schematic configuration diagram showing a second embodiment of the wheel motor according to the present invention.

FIG. 5 is a schematic diagram for explaining an operation in the second embodiment.

FIG. 6 is a schematic configuration diagram showing a third embodiment of the wheel motor according to the present invention.

FIG. 7 is a schematic configuration diagram showing a wheel motor applied to a conventional electric vehicle.

FIG. 8 is a detailed view of a main part showing a configuration of a motor body and a brake unit of the wheel motor.

FIG. 9 is a detailed view of a main part showing the operation of the brake unit when the battery is dead.

FIG. 10 is a schematic configuration diagram when a wheel motor is applied to a serving truck.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Motor main body (case body) 12 Rotating shaft 20 Reduction gear storage part 20a Output shaft 30 Brake part 40 Wheel 41 Hub (hub member) 42a, 42b Bearing 43, 48 Housing (housing member) 47, 49 Wheel member 44a, 44b Rim 45a-45c, 46a-46c Bolt (locking member, fastening member) 50 Bracket 51a-51c Locking pin 100 Wheel motor

Continued on the front page F term (reference) 3D035 DA02 3D039 AA03 AC21 AD11 3D050 AA01 AA16 DD01 EE09 KK14 5H607 AA15 BB01 DD03 DD08 EE01 EE21 FF12 GG08 GG09 JJ05

Claims (8)

[Claims] A case body provided with a motor mechanism therein and having a rotation shaft protruding from both ends; a brake unit for stopping and controlling the rotation of the rotation shaft protruding from one end of the case body; A hub member attached to the rotating shaft projecting from an end side; a wheel rotatably attached to the hub member; and a detachable locking member for matching the rotation state of the hub member and the wheel. And a wheel motor. 2. A case body in which a motor mechanism is provided and a rotation shaft protrudes from both ends, a brake unit for stopping and controlling the rotation of the rotation shaft protruding from one end of the case body, A hub member attached to the rotating shaft projecting from an end side; a housing member rotatably attached to the hub member; a wheel supported and fixed to the housing member; and a hub member and the wheel. And a detachable locking member for matching the rotation state. 3. A case body in which a motor mechanism is provided and a rotation shaft protrudes from both ends, a brake unit for stopping and controlling rotation of the rotation shaft protruding from one end of the case body, A speed reducer connected to the rotating shaft protruding from an end side; a hub member mounted on an output shaft protruding from the speed reducer; a wheel rotatably mounted on the hub member; and the hub member. And a detachable locking member for matching the rotation state of the wheel. 4. A case body in which a motor mechanism is provided and a rotation shaft protrudes from both ends, a brake unit for stopping and controlling rotation of the rotation shaft protruding from one end of the case body, A speed reducer connected to the rotating shaft protruding from an end side; a hub member mounted on an output shaft protruding from the speed reducer; a housing member rotatably mounted on the hub member; and the housing A wheel motor comprising: a wheel supported and fixed to a member; and a detachable locking member that matches the rotation state of the wheel with the hub member. 5. The wheel motor according to claim 1, wherein the locking member is a detachable fastening member that fixedly connects the hub member and the wheel. 6. The wheel motor according to claim 1, wherein the case body has an attachment portion attachable to a vehicle body. 7. The wheel motor according to claim 2, wherein the wheel is supported and fixed to the housing via a rim member. 8. The wheel motor according to claim 2, wherein the housing member is rotatably attached to the hub member via a bearing member.