JP5243941B2 - Electric management machine - Google Patents

Description

  The present invention relates to an electric power management machine having a tilling device that is used for operations such as tillage, middle tillage, weeding and cultivating in a field, and is equipped with an electric motor driven by a battery mounted on the machine body.

  Conventionally, a tilling device driven by an electric motor is provided at the lower part of the machine body, a steering handle extending from the machine body is provided, and a battery case for the electric motor or a plurality of battery cases for the electric motor is provided in the upper cover body provided in the machine body. 2. Description of the Related Art A walking type electric management machine provided with a battery storage unit for storing a battery sandwiched between battery holders is known (for example, Patent Documents 1 and 2).

  According to Patent Documents 1 and 2, when charging the battery case or the battery holder together with the battery case or for checking whether the battery case or the battery holder is set at a predetermined location for charging, the upper cover There was a problem that it took time and effort to reattach after removing the body one by one.

On the other hand, in another patent document , as a storage part for a battery case in an electric bicycle, the battery case is inserted into the top tube in a substantially horizontal direction from the rear end opening of a hollow top tube disposed in the center of the vehicle body. A configuration is disclosed that is configured to be detachably accommodated, and the rear end opening of the top tube is opened and closed from the outside by a rotatable lid member.
Japanese Utility Model Publication No. 5-48601 JP 2004-275102 A

However, even if a battery case storage part such as the above-mentioned another patent document is separately provided in the electric management machine of Patent Document 1 or 2, and a rotatable lid member is provided at the opening of the storage part, There is a problem that it cannot be confirmed whether or not the battery case is set (set) in the storage part without opening the cover member, and the cover member is opened after the battery case is taken out from the storage part. If it is left as it is, rainwater and dust are likely to enter the storage portion, and there is a problem that the battery connector in the storage portion is likely to be defective.

  Therefore, the present invention solves the above problems, makes it easy to check whether or not a battery case is set in the battery storage portion, and when the battery storage portion is in a state where the battery case is not set. In addition, it is a technical problem to provide an electric power management device that makes it difficult for rainwater and dust to enter the battery storage unit, and that has a simple lid opening / closing operation and a battery case insertion / extraction operation. is there.

In order to achieve the above object, according to the first aspect of the present invention, an electric motor type tilling device is provided at the lower part of the machine body, and a steering handle extending obliquely rearward is provided at the rear part of the machine body. An electric management machine provided with a battery storage unit for storing a battery case for the electric motor in a cover body, wherein the cover body has an opening through which the battery case can be inserted and removed toward the battery storage unit The battery housing portion is provided with a lid that covers the opening, and the lid body is changed from a closed posture to an insertable posture by inserting the battery case into the battery housing portion. and, wherein as the extraction operation of the battery case posture changed to the closed position, is rotatably supported by the transverse shaft on the upper side within the battery housing portion, the insertion Allowed A biasing means for holding the battery posture by pressing the side surface of the battery case in the battery housing portion with the lid body in the posture and holding the opening of the battery housing portion in the closed state in a closed posture. And a stepped portion for restricting the closing position of the lid and maintaining the insertion position of the battery case is formed on the lower side in the battery housing portion .

According to the invention of claim 1 of the present application, a battery housing portion for housing a battery case for the electric motor is provided in the cover body provided in the body of the electric management machine, and the cover body includes the battery housing portion. An opening through which the battery case can be inserted and removed is formed, and the battery housing part is provided with a lid that covers the opening, and the lid is formed by inserting the battery case into the battery housing. What is pivotally supported by a lateral support shaft on the upper side in the battery storage portion so that the posture is changed from a closed posture to an insertable posture and the posture is changed to a closed posture by an extraction operation of the battery case. It is.

  Therefore, the lid can be opened and closed in accordance with the battery case insertion / extraction operation with respect to the battery housing portion, so that it is not necessary to open / close only the lid, and the battery case insertion / extraction operation can be performed very easily. In a state where the battery case is removed from the battery housing part for charging the battery or the like, the opening is closed by the lid, so that rainwater and dust do not enter the battery housing part, for example, electric It is possible to prevent a connector that is a general connection portion from becoming defective. In addition, when the battery case is inserted into the battery storage unit, the lid is changed in posture from the closed posture to the insertable posture, and the battery case inserted from the opening can be easily confirmed.

In addition, since the lid body in the insertable posture is in contact with the side surface of the battery case in the battery housing portion, the rear portion of the battery case in the inserted state is not hidden by the lid body, There is an effect that the presence of the can be easily confirmed from the opening.

Further , the lid body in the insertable posture presses the side surface of the battery case in the battery storage portion to hold the posture of the battery, and the opening portion of the battery storage portion in the empty state is closed. Since the holding means is provided, the posture of the battery case in the battery storage portion can be easily executed by the lid, while when the battery storage portion is empty, Thus, the opening can be held in a closed position, and the lid body does not open carelessly.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the following description, when using terms indicating a specific direction or position (for example, “front / rear”, “left / right”, etc.) as necessary, the traveling direction of the electric power controller is “front” unless otherwise specified. The standard to be. Further, these terms are used for convenience of explanation, and do not limit the technical scope of the present invention.

(1). First, a schematic structure of the electric management machine 1 will be described with reference to FIGS. 1 and 2.

  The electric management machine 1 according to the embodiment includes a rotary tiller 4 at the lower part of a pair of left and right support arm bodies 3 in the machine body 2. A steering handle 5 extending rearward and obliquely upward is connected to upper ends of the pair of support arm bodies 3 at the rear of the upper surface of the body 2. When the operator operates the steering handle 5 to the left and right, the direction (traveling direction) of the machine body 2 itself is changed.

  A pair of left and right moving wheels 6 is attached to a location in front of the tilling device 4 in the body 2. During non-work such as traveling on the road or over the fence, the operator moves the electric management machine 1 while tilting the steering handle 5 forward, leaving the tilling device 4 away from the ground and only the moving wheel 6 is in contact with the ground. I will let you.

  A resistance rod 7 that pierces into the ground and imparts resistance to the forward movement of the machine body 2 is attached to a position behind the tillage device 4 in the machine body 2 so as to be rotatable up and down around a lateral pivot shaft 8. ing. If the resistance rod 7 is deeply pierced deeply into the ground, it can be deeply cultivated at a slow forward speed, and if the resistance rod 7 is deeply pierced deeply into the ground, it can be cultivated at a high forward speed and shallow in depth. It will be possible.

  A hand operating lever 13 is provided on the inner peripheral side of the grip portion 12 formed on the distal end side of the steering handle 5. When the hand operating lever 13 is gripped together with the grip portion 12, the tilling device 4 is driven and the tilling device 4 is driven. On the other hand, when the hand gripping the grip portion 12 is loosened and released from the hand operating lever 13, the cutting device 4 is turned off. Is configured to stop.

  The drive / stop operation of the tillage device 4 by the hand operation lever 13 can be performed by turning on a main power switch (not shown) provided on the rear side of the machine body 2. If the main power switch is turned off, the tilling device 4 will not be driven even if the hand control lever 13 is operated.

(2). Next, the structure of the tillage device 4 will be described with reference to FIGS.

  The support arm body 3 of the embodiment is a pair of left and right, and a bearing portion 16 is detachably attached to a lower end portion thereof. The tilling device 4 includes a horizontally long tilling cylinder shaft (cultivation rotor) 20 that is rotatably disposed between the left and right bearing portions 16 and a plurality of tilling claws 21 that protrude from the outer peripheral surface of the tilling cylinder shaft body 20. And. The rotor shafts 22 projecting outward from the left and right end faces of the hollow cylindrical tilling cylinder shaft body 20 are detachably fixed to the bearing portions 16 of the corresponding support arm bodies 3, respectively. That is, the tilling cylinder shaft body 20 is supported in a cantilevered manner between the lower portions of the left and right support arm bodies 3 (between the left and right bearing portions 16). The tilling cylinder shaft 20 is rotatably supported by the rotor shaft 22.

  Although details are omitted, an electric motor and a speed reduction mechanism as a power source are arranged inside the tilling cylinder shaft body 20. In this case, an electrical cord 11 that connects a connector 23 (described later) that is a power input unit in the battery housing 9 and an electric motor is formed in either the left or right hollow support arm body 3 and the rotor shaft 23. Are arranged through the inserted cord insertion hole. Then, an electric motor (not shown) is driven by power supply from the battery case 10, and the tilling cylinder shaft body 20 is driven to rotate around the rotor shaft 22 by rotational power from the electric motor via a speed reduction mechanism. Is configured to do. The field is cultivated by the rotation of the cultivating claws 21 together with the cultivating cylinder shaft 20.

(3). Next, the structure of the storage location of the battery case 10 will be described with reference to FIGS.

  A plurality of batteries (not shown) are housed in the battery case 10. Here, the battery refers to a battery that can be repeatedly charged and discharged, such as a lithium ion battery or a nickel metal hydride battery. The battery case 10 itself is made of synthetic resin, and a power output unit (output) that can be brought into close contact with a power input unit (connector) 23 disposed in a battery housing unit 9 to be described later at the tip of the battery case 10. Terminal) 24 is projected. A grip recess 10a into which an operator's finger can be fitted is formed in the rear portion of the battery case 10 of the embodiment near the rear (see FIG. 5A).

  The battery storage unit 9 is formed in a cover body 26 that covers the upper part of the plate-shaped metal frame 25 in the machine body 2. More specifically, the cover body 26 made of synthetic resin or the like includes a lower cover body 27 that is secured to the upper surface of the metal frame 25 by bolts 28 and an upper cover body 29 that detachably covers the upper side of the lower cover body 27. In addition, the battery storage portion 9 is formed in a space surrounded by the cover bodies 27 and 29. In the embodiment, the lower cover body 27 has an opening 30 that opens to the rear side (side from which the steering handle 5 extends). However, in another embodiment, the opening 30 straddles both the cover bodies 27 and 29. It may be formed.

  In the battery housing portion 9 in the embodiment, the bottom plate 27a of the lower cover body 27, a pair of ribs 27b formed integrally and projecting upward from the bottom plate 27a, and the front side facing the opening 30 are not shown. A support plate 31 for the connector 23 fixed to the member is provided. The pair of ribs 27b are in contact with the left and right side surfaces of the battery case 10 detachably stored in the battery storage unit 9 so that the battery case 10 does not rattle in the left-right direction (see FIG. 7). The height dimension of the pair of ribs 27 b may be lower than the height dimension of the left and right side surfaces of the battery case 10. Of the pair of ribs 27b, the width dimension of the pair of ribs 27b closer to the opening 30 is set larger than the width dimension of the battery case 10, and the handle recesses 10a on the left and right side surfaces of the battery case 10 are grasped with fingers and inserted / removed. It is preferable that the finger does not interfere with the pair of ribs 27b (see FIG. 6). Further, the ridge line of the rib 27b is formed so as to become lower as it approaches the opening 30 so that it does not interfere with the rotation trajectory of the lower end of the lid 34 when the lid 34 is opened and closed.

  On the upper surface of the bottom plate 27 a of the lower cover body 27, a protrusion 32 for reducing the sliding resistance of the battery case 10 inserted from the opening 30 is formed long along the insertion / extraction direction of the battery case 10.

  On the upper side of the battery storage unit 9 and close to the opening 30, a lid body 34 that is rotatably supported by the lateral support shaft 33 is provided. The lid body 34 enters the battery storage unit 9. The posture of the opening 30 is changed from the closed posture to the insertable posture by the insertion operation of the battery case 10, and the posture is changed to the closed posture of the opening 30 by the extraction operation of the battery case 10. The lid 34 is urged so as to always move downward at the lower end side through an urging means such as a torsion spring (not shown) to close the opening 30 (FIG. 5A). ) And FIG. 5B). In the case of a torsion spring, one end of the torsion spring is locked to the back side of the lid 34 (inside the battery housing 9), and the winding portion of the torsion spring is loosely fitted to the lateral support shaft 33. Then, the other end of the torsion spring is locked to the inner surface of the lower cover body 27 and the like.

  In the battery housing part 9, the side close to the opening part 30 has a downward posture so as to close (close) the opening part 30 when the battery case 10 is not present in the battery housing part 9 (empty state). A step 35 serving as a stopper is formed integrally with the bottom plate 27a for holding. Accordingly, the lower end portion of the lid body 34 rotated downward by the urging means can be brought into contact with the stepped portion 35 to maintain the closed posture (see FIG. 5B).

  In addition, the cover body 43 in an insertable posture can press the side surface (upper surface) of the battery case 10 in the battery storage portion 9 via the biasing means, and the storage posture of the battery case 10 can be maintained ( (See FIG. 5A). That is, the battery case 10 set in the battery storage unit 9 is elastically sandwiched between the pressing lid 43 and the bottom plate 27a of the battery storage unit 9, and does not rattle carelessly.

  The connector 23 attached to the support plate 31 is provided with a biasing means (not shown) so as to press the power output part (output terminal) 24 of the battery case 10 inserted (set) in the battery housing part 9. Yes. And the rear end bottom part of the battery case 10 set in the battery housing part 9 is engaged with the step part 35, so that the battery case 10 pushed from the connector 23 side is not inadvertently retracted. Yes. Accordingly, the electrical connection between the power output portion (output terminal) 24 of the battery case 10 and the connector 23 is strengthened, and no electrical contact failure is caused by vibration or the like. As described above, the step portion 35 includes a stopper that defines the closing position of the lid 34 and engagement means for preventing the set battery case 10 from retreating (in order to maintain the insertion position of the battery case 10). It can play two roles.

  With the above configuration, as the battery case 10 is inserted into the battery housing portion 9, the lid 34 that is stationary at the position of the step portion 35 is pushed by the tip end portion of the battery case 10 and pivots upward to close. Is changed to an insertable posture (see FIG. 5B). On the contrary, the lid 34 that rotates downward by the urging means is changed to the closed posture by extracting the battery case 10.

  FIGS. 8A and 8B are a stopper that defines the closing position of the lid 34, and a latch for preventing the battery case 10 that is set from moving backward (to maintain the insertion position of the battery case 10). This is a second embodiment of a means that also serves as a combination means, and is a male engagement such as a protrusion or a protrusion extending in the width direction of the battery case 10 on the side close to the opening 30 of the bottom plate 27a of the lower cover body 27. The part 36 is integrally formed upward. On the other hand, a female engagement portion 37 that fits into the male engagement portion 36 is formed in the bottom of the battery case 10 so as to be recessed. Further, the male engaging portion 36 is configured such that the lower end portion of the lid 34 in the closed posture can come into contact therewith.

  With such a configuration, when the female engagement portion 37 at the bottom of the battery case 10 set in the battery housing portion 9 is engaged with the male engagement portion 36, the battery case 10 pushed from the connector 23 side. Will not inadvertently retreat. Further, when the inside of the battery storage unit 9 is empty, the lid 34 that rotates downward by the urging means is stopped at the position of the male engagement part 36, and the closed posture to the opening 30 can be maintained.

  As shown in FIGS. 8A and 8B, the stopper 38 may be formed on the side wall in the vicinity of the opening 30 so as to keep the lid 34 closed.

  As another embodiment, by forming at least the surface of the lid body 34 with an elastic member, the portion pressed against the upper surface of the battery case 10 by the lid body 34, or the output hitting the lid body 34 when the battery case 10 is inserted The terminal 24 can be prevented from being damaged.

  In addition, the opening 30 of the battery storage unit 9 is opened to the rear side of the machine body 2 and the steering handle 5 is opened below the position where the steering handle 5 is attached to the machine body 2, so that the rear side of the machine body 2. As a result of being able to observe the opening 30 well from an operator standing in the position, it is easy to confirm whether or not the battery case 10 is inserted in the battery housing 9.

  Further, if the eaves portion 40 is formed on the lower cover body 27 or the upper cover body 29 on the upper side of the opening 30 so as to extend to the rear of the machine body 2, rain drops travel along the opening 30 to store the battery. It becomes difficult to enter the part 9.

It is a left view of an electric management machine. FIG. 2 is a partially enlarged view of the management machine in a state in which a lid body indicated by arrows II-II in FIG. 1 is omitted. FIG. 4 is a partially enlarged left side view of the electric management machine in a state where a battery case is stored in a battery storage unit. It is a rear view of the electric management machine of the state in which the battery case was accommodated in the battery accommodating part. It is an enlarged explanatory view showing the inside of the battery storage unit of the first embodiment, (A) is a diagram showing the storage state of the battery case, (B) is a diagram showing a state before the battery case is inserted into the battery storage unit. . It is a partially notched top view which shows the battery accommodating part of 1st Embodiment. FIG. 7 is a view taken along line VII-VII in FIG. 6. It is an enlarged explanatory view showing the inside of the battery storage unit of the second embodiment, (A) is a diagram showing the storage state of the battery case, (B) is a diagram showing a state before the battery case is inserted into the battery storage unit. .

DESCRIPTION OF SYMBOLS 1 Electricity management machine 2 Machine body 3 Support arm body 4 Plowing device 9 Battery storage part 10 Battery case 11 Electric cord 20 Cultivation cylinder shaft body 21 Cultivation claw 23 Connector 24 Electric power output part (output terminal)
26 cover body 27 lower cover body 29 upper cover body 30 opening 31 support plate 33 lateral support shaft 34 lid body 35 step portion 36 male engagement portion 37 female engagement portion 38 stopper 40 collar

Claims (1)

An electric motor type tilling device is provided at the lower part of the machine body, a steering handle extending obliquely rearward is provided at the rear part of the machine body, and a battery case for the electric motor is stored in a cover body provided in the machine body. An electric management machine equipped with a battery storage unit,
The cover body is formed with an opening through which the battery case can be inserted and removed toward the battery storage portion.
The battery housing portion is provided with a lid that covers the opening, and the lid body is changed from a closed posture to an insertable posture by an insertion operation of the battery case into the battery housing portion, and the battery It is rotatably supported by a lateral support shaft on the upper side in the battery storage portion so that the posture is changed to the closed posture by the extraction operation of the case ,
The lid body in the insertable posture presses the side surface of the battery case in the battery housing portion to hold the battery posture, and holds the opening of the battery housing portion in an empty state in a closed posture. Biasing means are provided,
On the lower side in the battery storage portion, a step portion is formed that regulates the closing position of the lid and maintains the insertion position of the battery case.
Electric management machine.

Images