Working machine

Abstract

To provide a technology which enables reduction of time and effort needed for connector assembly work.SOLUTION: A working machine may include: a first operation rod extending in a front-rear direction; a front unit disposed frontward of the first operation rod and including a work part; a rear unit disposed rearward of the first operation rod; a first wire disposed inside the first operation rod; a first terminal electrically connected to the first wire; a first connector housing which holds the first terminal and is configured to pass through the interior of the first operation rod in the front-rear direction; a retaining part configured to retain the first connector housing at one end of the first operation rod; a second terminal; and a second connector housing which holds the second terminal and is detachably attached to the first connector housing. The first terminal and the second terminal are electrically connected to each other by the first connector housing and the second connector housing being attached to each other.SELECTED DRAWING: Figure 11

Description

[Technical field]

[0001] The technology disclosed in this specification relates to a work machine. [Background technology]

[0002] Patent Document 1 discloses a work machine including a first operating rod extending in a front-rear direction, a front unit disposed forward of the first operating rod and including a working unit, a rear unit disposed rearward of the first operating rod, a first electric wire disposed inside the first operating rod, a first terminal electrically connected to the first electric wire, a first connector housing holding the first terminal, a second terminal, and a second connector housing holding the second terminal and removably attached to the first connector housing. The first connector housing and the second connector housing are attached to each other to electrically connect the first terminal and the second terminal. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 10-89322 Summary of the Invention [Problem to be solved by the invention]

[0004] In the process of manufacturing the working machine, an operation of assembling the first connector housing and the first electric wire to the first operating rod (hereinafter, also referred to as "connector assembling operation") is performed. In the working machine of Patent Document 1, there is a restriction that the first connector housing cannot pass through the inside of the first operating rod, so it is expected that the connector assembling operation will be time-consuming. This specification provides a technology that can reduce the time required for the connector assembling operation. [Means for solving the problem]

[0005] The working machine disclosed in this specification includes a first operating rod extending in a front-rear direction, a front unit disposed forward of the first operating rod and including a working unit, a rear unit disposed rearward of the first operating rod, a first electric wire disposed inside the first operating rod, a first terminal electrically connected to the first electric wire, a first connector housing holding the first terminal and configured to be able to pass through the inside of the first operating rod in the front-rear direction, a holding part holding the first connector housing at one end of the first operating rod, a second terminal, and a second connector housing holding the second terminal and removably attached to the first connector housing. The first connector housing and the second connector housing are attached to each other to electrically connect the first terminal and the second terminal.

[0006] If the first connector housing cannot pass through the inside of the first operating rod, it is expected that the connector assembly work will require time and effort to release the connection between the first connector housing and the first electric wire. Alternatively, it is expected that the first operating rod will require time and effort to disassemble. With the above configuration, the first connector housing can pass through the inside of the first operating rod. Therefore, there is no need to release the connection between the first connector housing and the first electric wire or disassemble the first operating rod during the connector assembly work. This makes it possible to reduce the time and effort required for the connector assembly work. [Brief description of the drawings]

[0007] [Figure 1] 1 is a diagram of a working machine 2 of a first embodiment as viewed from above on the front right. [Diagram 2] 2 is a diagram showing the internal structure of a front unit 6 of a work machine 2 of a first embodiment as viewed from above on the front right. FIG. [Diagram 3] 2 is a diagram showing the internal structure of a rear unit 8 of a working machine 2 of a first embodiment as viewed from above on the front right. FIG. [Figure 4] 2 is a diagram showing the internal structure of an operating rod 4 of a working machine 2 of the first embodiment, as viewed from above on the front right side. FIG. [Diagram 5]1 is a diagram showing the first connector 62 and the configuration in the vicinity thereof in the work machine 2 of the first embodiment with the holding member 78 removed, as viewed from above on the front right. [Figure 6] 1 is a diagram showing the first connector 62 and the configuration in the vicinity thereof in the working machine 2 of the first embodiment with the holding member 78 removed, as viewed from the rear left below. FIG. [Figure 7] FIG. 11 is a view showing how the first connector 62 is held by a holding member 78 at the front end of the middle partial rod 4m (rear partial rod 4r) of the work machine 2 of the first embodiment, as viewed from above on the front right. [Figure 8] FIG. 13 is a front view of the first connector 62 being held by a holding member 78 at the front end of the middle partial rod 4m (rear partial rod 4r) of the work machine 2 of the first embodiment. [Figure 9] 1 is a diagram showing a second connector 64 and the configuration in the vicinity of the second connector 64 of the work machine 2 of the first embodiment, as viewed from the upper rear right. [Figure 10] FIG. 11 is a diagram showing how the second connector 64 is held at the rear end of the front partial rod 4f (middle partial rod 4m) of the work machine 2 of the first embodiment, as viewed from the upper rear right. [Figure 11] 10 is a cross-sectional view showing how a front partial rod 4f and a middle partial rod 4m are connected to each other by a first connecting member 18 of the working machine 2 of the first embodiment. FIG. [Figure 12] 4 is a cross-sectional view showing how a middle partial rod 4m and a rear partial rod 4r are connected to each other by a second connecting member 20 of the working machine 2 of the first embodiment. FIG. [Figure 13] 10 is a cross-sectional view showing how multiple connections of intermediate rods 4m of the working machine 2 of the first embodiment are prevented. FIG. [Figure 14] 4 is a diagram showing a mounting means for mounting a front partial rod 4f to a front unit 6 of the working machine 2 of the first embodiment. FIG. [Figure 15] 4 is a diagram showing a mounting means for mounting a rear partial rod 4r to a rear unit 8 of the working machine 2 of the first embodiment. FIG. [Figure 16] FIG. 11 is a view of a working machine 302 according to a second embodiment as viewed from above on the front right. [Figure 17] FIG. 11 is a view of a working machine 402 according to a third embodiment, as viewed from above on the front right. [Figure 18] FIG. 11 is a view of a working machine 502 according to a fourth embodiment, viewed from above on the front right. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] Representative and non-limiting examples of the present invention are described in detail below with reference to the drawings. This detailed description is intended simply to provide those skilled in the art with details for implementing the preferred examples of the present invention, and is not intended to limit the scope of the present invention. Additionally, the additional features and inventions disclosed can be used separately or together with other features and inventions to provide further improved working machines.

[0009] In addition, the combinations of features and steps disclosed in the following detailed description are not essential for implementing the present invention in the broadest sense, but are specifically described only to illustrate representative embodiments of the present invention. Furthermore, the various features of the following representative embodiments and the various features described in the claims do not have to be combined in the exact manner of the embodiments described herein or in the order listed in order to provide additional and useful embodiments of the present invention.

[0010] All features described in the specification and / or claims are intended to be disclosed individually and independently of one another as limitations to the specific features described in the original disclosure and claims, apart from the configuration of features described in the examples and / or claims. Furthermore, all numerical ranges and group or aggregate descriptions are intended to disclose intermediate configurations thereof as limitations to the specific features described in the original disclosure and claims.

[0011] In one or more embodiments, the holding portion may include a holding member removably attached to the first connector housing, and the holding member may hold the first connector housing at the one end of the first operating rod.

[0012] For example, it is conceivable to adhere the first connector housing to the first operating rod with an adhesive. However, when the first connector housing is adhered to the first operating rod, it becomes difficult to remove the first connector housing from the first operating rod. This makes it difficult to redo the connector assembly work. This configuration may cause inconvenience to the manufacturer of the working machine. According to the above configuration, the holding member that holds the first connector housing to the first operating rod is configured to be detachable from the first connector housing. Therefore, even after the connector assembly work is completed, the connector assembly work can be easily redo. This reduces the inconvenience felt by the manufacturer of the working machine.

[0013] In one or more embodiments, the holding member may include a stopper portion that protrudes outward from an outer surface of the first connector housing when the holding member is attached to the first connector housing. The stopper portion may abut against the first operating rod in the front-rear direction, thereby holding the first connector housing at the one end of the first operating rod.

[0014] According to the above configuration, the first connector housing can be held on the first operating rod in a relatively simple manner.

[0015] In one or more embodiments, the stopper portion may include a first stopper portion and a second stopper portion disposed circumferentially offset from the first stopper portion.

[0016] If the holding member abuts against the end of the first operating rod at one point, the position of the first connector housing relative to the end of the first operating rod may be unstable. With the above configuration, the holding member abuts against the end of the first operating rod at at least two points. This makes it possible to stabilize the position of the first connector housing relative to the end of the first operating rod.

[0017] In one or more embodiments, the stopper portion may include a third stopper portion disposed circumferentially offset from each of the first stopper portion and the second stopper portion.

[0018] According to the above configuration, the holding member abuts against the end of the first operating rod at at least three points, which makes it possible to further stabilize the position of the first connector housing relative to the end of the first operating rod.

[0019] In one or more embodiments, an outer surface of the stopper portion may be recessed inwardly from an outer surface of the first operating rod when viewed along the front-rear direction.

[0020] If the outer surface of the stopper portion protrudes outward from the outer surface of the first operating rod, inconveniences may occur. For example, when attaching some kind of member to the outside of the first operating rod, it is expected that the stopper portion will interfere with the member. According to the above configuration, the outer surface of the stopper portion is recessed inward from the outer surface of the first operating rod, so that such inconveniences can be prevented. Note that the expression "one outer surface is recessed inward from the other outer surface" in this specification also applies to cases where the two outer surfaces are flush.

[0021] In one or more embodiments, the retaining member may have a press-fit portion that penetrates into the inside of the first operating rod via the one end of the first operating rod and is pressed between the outer surface of the first connector housing and the inner surface of the first operating rod.

[0022] Since the first connector housing is configured to allow the first operating rod to pass through, a gap may occur between the outer surface of the first connector housing and the inner surface of the first operating rod. If this gap cannot be filled, the first connector housing may rattle relative to the first operating rod. With the above configuration, the press-fit portion at least partially fills the gap. This makes it possible to prevent the first connector housing from rattling relative to the first operating rod.

[0023] In one or more embodiments, the one end of the first operating rod may include a notched groove that receives the stopper portion along the front-rear direction.

[0024] According to the above configuration, the cutout groove receives the stopper portion, thereby suppressing movement of the first connector housing in the circumferential direction of the first operating rod. Therefore, the first operating rod and the first connector housing are positioned relative to each other in the circumferential direction of the first operating rod.

[0025] In one or more embodiments, the device may further include a connecting member provided at the one end of the first operating rod. The connecting member may include a cylindrical portion into which the one end of the first operating rod is inserted. The holding member may include a guide protrusion that protrudes outward beyond an outer surface of the first operating rod when viewed along the front-to-rear direction. The cylindrical portion may include a guide groove that receives the guide protrusion slidably along the front-to-rear direction.

[0026] According to the above configuration, the guide groove receives the guide protrusion, thereby preventing the first connector housing from moving in the circumferential direction of the cylindrical portion, and therefore the connecting member and the first connector housing are positioned relative to each other in the circumferential direction of the cylindrical portion.

[0027] In one or more embodiments, the device may further include a connecting member provided at the one end of the first operating rod. The connecting member may include a cylindrical portion into which the one end of the first operating rod is inserted. The cylindrical portion may include a support portion that abuts against the stopper portion from the opposite side of the one end of the first operating rod as viewed from the stopper portion.

[0028] According to the above configuration, the stopper portion is sandwiched between the end of the first operating rod and the support portion of the cylindrical portion in the front-rear direction. This prevents the first connector housing from moving in the front-rear direction relative to the first operating rod and the connecting member. Therefore, the first connector housing is positioned in the front-rear direction relative to the first operating rod and the connecting member.

[0029] In one or more embodiments, the holding member may include a band portion extending over at least half the circumference of the first connector housing, a first engagement portion protruding from one end of the band portion toward the first connector housing, and a second engagement portion protruding from the other end of the band portion toward the first connector housing. The first connector housing may include a first recess corresponding to the first engagement portion and a second recess corresponding to the second engagement portion. When the band portion is pushed outward in the radial direction by the outer surface of the first connector housing, the first engagement portion may engage with the first recess, and the second engagement portion may engage with the second recess.

[0030] It is also possible to attach the retaining member to the first connector housing using a fixture such as a pin. However, this configuration increases the number of parts, which may increase the manufacturing cost of the work machine. According to the above configuration, the retaining member can be attached to the first connector housing without using a fixture by utilizing the elasticity of the retaining member. This allows the number of parts to be reduced, thereby reducing the manufacturing cost of the work machine.

[0031] In one or more embodiments, the other end of the first operating rod may be attached to the rear unit or the front unit in a state in which it is difficult to remove.

[0032] It is expected that the rear unit (or the front unit) will be provided with a relatively heavy component (e.g., a battery pack). For this reason, it is expected that a relatively heavy load will be applied to the connection point between the operating rod and the rear unit (or the front unit). Here, if the operating rod is attached to the rear unit (or the front unit) in a state in which it is easily detachable, it may be difficult to ensure rigidity that can withstand the above load at the connection point between the two. According to the above configuration, the operating rod is attached to the rear unit (or the front unit) in a state in which it is difficult to detach. In this configuration, the operating rod can be attached to the rear unit (or the front unit) relatively firmly. For this reason, it is easy to ensure rigidity that can withstand the above load at the connection point between the two. In this specification, the "difficult to detach state" means a state in which a tool (e.g., a screwdriver) must be used for removal, a state in which the rear unit (or the front unit) must be disassembled for removal, or a state in which the rear unit (or the front unit) or the operating rod must be destroyed for removal. On the other hand, "easy removal" means a state in which the use of tools is not required for removal, the state in which disassembly of the rear unit (or front unit) is not required for removal, or the state in which destruction of the rear unit (or front unit) and the operating rod is not required for removal.

[0033] In one or more embodiments, the working machine may further include a second operating rod extending in a front-rear direction and disposed between the front unit and the rear unit, and a second electric wire disposed inside the second operating rod. One end of the second operating rod may be detachably attached to the one end of the first operating rod. The second electric wire may be electrically connected to the second terminal. The second connector housing may be held at the one end of the second operating rod.

[0034] The size of a working machine equipped with an operating rod tends to be large in the front-to-rear direction. This can make it difficult to store (or pack) the working machine. According to the above configuration, the working machine can be divided between the first operating rod and the second operating rod. By dividing the working machine, the size of the working machine in the front-to-rear direction can be reduced. This makes it easier to store (or pack) the working machine.

[0035] In one or more embodiments, the other end of the second operating rod may be attached to the front unit or the rear unit in a state in which it is difficult to remove.

[0036] It is expected that the front unit (or rear unit) will be provided with a relatively heavy component (e.g., an electric motor). For this reason, it is expected that a relatively heavy load will be applied to the connection point between the operating rod and the front unit (or rear unit). Here, if the operating rod is attached to the front unit (or rear unit) in a state in which it is easily removable, it may be difficult to ensure sufficient rigidity to withstand the above-mentioned load at the connection point between the two. According to the above configuration, the operating rod is attached to the front unit (or rear unit) in a state in which it is difficult to remove. In this configuration, the operating rod can be attached relatively firmly to the front unit (or rear unit). For this reason, it becomes easy to ensure sufficient rigidity to withstand the above-mentioned load at the connection point between the two.

[0037] In one or more embodiments, the work machine may further include a third operating rod extending in a front-rear direction and disposed between the front unit and the rear unit. One end of the third operating rod may be detachably attached to the other end of the second operating rod.

[0038] According to the above configuration, the working machine can be divided not only between the first operating rod and the second operating rod, but also between the second operating rod and the third operating rod. This makes it possible to make the working machine more compact, making it easier to store (or pack) the working machine.

[0039] In one or more embodiments, the other end of the third operating rod may be attached to the front unit or the rear unit in a state in which it is difficult to remove.

[0040] It is expected that the front unit (or rear unit) will be provided with a relatively heavy component (e.g., an electric motor). For this reason, it is expected that a relatively heavy load will be applied to the connection point between the operating rod and the front unit (or rear unit). Here, if the operating rod is attached to the front unit (or rear unit) in a state in which it is easily removable, it may be difficult to ensure sufficient rigidity to withstand the above-mentioned load at the connection point between the two. According to the above configuration, the operating rod is attached to the front unit (or rear unit) in a state in which it is difficult to remove. In this configuration, the operating rod can be attached relatively firmly to the front unit (or rear unit). For this reason, it becomes easy to ensure sufficient rigidity to withstand the above-mentioned load at the connection point between the two.

[0041] In one or more embodiments, the rear unit may include a power interface for connecting to a power source, and the first wire may function as at least a part of a power transmission path between the working unit and the power interface.

[0042] It is also conceivable to provide a power supply interface in the front unit. However, in this configuration, components for supplying power (e.g., a battery pack, a power cord) are attached to the front unit, which may increase the weight of the front unit. As a result, the handling performance of the working unit provided in the front unit may decrease. According to the above configuration, the power supply interface is provided in the rear unit. Therefore, it is not necessary to attach components for supplying power to the front unit, which makes it possible to reduce the weight of the front unit. This makes it possible to improve the handling performance of the working unit.

[0043] (Example 1; Work machine 2) As shown in FIG. 1, the working machine 2 is a pole saw. The pole saw is used for pruning branches at high places. The working machine 2 includes an operating rod 4 extending in the front-rear direction, a front unit 6 located at the front end of the operating rod 4, and a rear unit 8 located at the rear end of the operating rod 4. A guide bar 10 and a saw chain 12 are detachably attached to the front unit 6. The guide bar 10 is a long, thin plate-like member. The saw chain 12 includes a plurality of cutters (not shown) connected to each other and is attached along the periphery of the guide bar 10. A rechargeable battery pack B is detachably attached to the rear unit 8. The working machine 2 cuts tree branches and the like by running the saw chain 12 along the periphery of the guide bar 10 using power supplied from the battery pack B. In this embodiment, the guide bar 10 and the saw chain 12 may be collectively referred to as a "working unit 14."

[0044] In this specification, the direction in which the operating rod 4 extends is defined as the front-rear direction. The direction perpendicular to the front-rear direction and along the thickness direction of the guide bar 10 is defined as the left-right direction. The direction perpendicular to the front-rear direction and the up-down direction is defined as the up-down direction.

[0045] The operating rod 4 includes a front rod 4f, a middle rod 4m, and a rear rod 4r. The front rod 4f, the middle rod 4m, and the rear rod 4r are each a cylindrical member having a substantially circular cross-sectional shape. The working machine 2 includes a first connecting member 18 that detachably connects the front rod 4f and the middle rod 4m to each other, and a second connecting member 20 that detachably connects the middle rod 4m and the rear rod 4r to each other.

[0046] As shown in FIG. 2, the front unit 6 includes the front housing 22, the electric motor 24, the speed reduction mechanism 26, the control unit 28, the oil tank 30, and the oil pump 32. The front housing 22 includes a front housing body 34 and a rotating part 36. The front housing body 34 houses the electric motor 24, the speed reduction mechanism 26, the control unit 28, the oil tank 30, and the oil pump 32. The front end of the operating rod 4 is attached to the rotating part 36. The rotating part 36 holds the front housing body 34 rotatably relative to the operating rod 4. Normally, the front housing body 34 is prohibited from rotating relative to the operating rod 4. The rotating part 36 is provided with a push operation part 36a for allowing the front housing 22 to rotate relative to the operating rod 4. The user can change the attitude of the working part 14 relative to the operating rod 4 by rotating the front housing 22 while pushing in the push operation part 36a.

[0047] The electric motor 24 is, for example, an inner rotor type DC brushless motor. The electric motor 24 rotates a motor shaft (not shown) that is rotatably supported by the front housing 22. The motor shaft is connected to a sprocket (not shown) via a reduction mechanism 26. The saw chain 12 is stretched over the sprocket from the guide bar 10. When the electric motor 24 operates, the sprocket rotates, thereby causing the saw chain 12 to travel along the periphery of the guide bar 10. In other words, the working unit 14 operates.

[0048] The control unit 28 controls the operation of electrical components included in the work machine 2. The control unit 28 includes, for example, an inverter circuit including a switching element, and a control circuit that controls the operation of the switching element. The control unit 28 adjusts the power supplied from the battery pack B and supplies it to the electric motor 24, thereby operating the electric motor 24.

[0049] The oil tank 30 stores lubricating oil for lubricating the saw chain 12. A refill opening (not shown) for refilling the lubricating oil is formed in the oil tank 30. A cap 38 is removably attached to the refill opening. The refill opening and the cap 38 are exposed on the right surface of the front housing 22.

[0050] The oil pump 32 is connected to a motor shaft (not shown) of the electric motor 24. In conjunction with the rotation of the motor shaft, the oil pump 32 sucks out the lubricating oil from the inside of the oil tank 30 via an inlet pipe 40, and delivers the lubricating oil towards the guide bar 10 via an outlet pipe 42.

[0051] As shown in Fig. 3, the rear unit 8 includes a rear housing 44, a trigger lever 46, a trigger lock 48, a trigger switch 50, and a power interface 52. The rear end of the operating rod 4 is attached to the front part of the rear housing 44. A grip 54 for a user to hold is defined on the rear housing 44. When performing work using the work machine 2, the user holds the grip 54 with one hand while holding the operating rod 4 with the other hand. In addition, the above-mentioned battery pack B is detachably attached to the rear part of the rear housing 44.

[0052] The trigger lever 46 is disposed at the bottom of the grip 54. The trigger lever 46 is disposed at a position operable by the index finger of the hand gripping the grip 54. When the trigger lever 46 is pressed, the trigger switch 50 outputs a trigger-on signal to the control unit 28. The control unit 28 operates the electric motor 24 while the trigger switch 50 outputs the trigger-on signal. On the other hand, when the trigger lever 46 is not pressed, the trigger switch 50 outputs a trigger-off signal to the control unit 28. The control unit 28 stops the electric motor 24 while the trigger switch 50 outputs the trigger-off signal. In addition, the trigger lock 48 is disposed at a position on the grip 54 operable by the thumb of the hand gripping the grip 54. When the trigger lock 48 is not pressed, the trigger lever 46 is locked. When the trigger lock 48 is pressed, the trigger lever 46 is unlocked. The user can operate the working unit 14 by depressing the trigger lever 46 while the trigger lock 48 is being depressed.

[0053] The power supply interface 52 is an interface for electrically connecting the battery pack B to the work machine 2. The power supply interface 52 includes an external terminal (not shown) exposed to the outside of the rear housing 44. When the battery pack B is attached to the rear housing 44, the external terminal is connected to a connection terminal (not shown) provided on the battery pack B.

[0054] 4, the work machine 2 includes a front electric wire 56f disposed inside the front rod 4f, a middle electric wire 56m disposed inside the middle rod 4m, and a rear electric wire 56r disposed inside the rear rod 4r. The work machine 2 also includes a front connector set 58 for connecting the front electric wire 56f and the middle electric wire 56m, and a rear connector set 60 for connecting the middle electric wire 56m and the rear electric wire 56r. Each of the front connector set 58 and the rear connector set 60 includes a first connector 62 and a second connector 64.

[0055] A front end of the front partial electric wire 56f is electrically connected to the front unit 6 (see FIG. 2). A second connector 64 of the front connector set 58 is provided at a rear end of the front partial electric wire 56f. A first connector 62 of the front connector set 58 is provided at a front end of the middle partial electric wire 56m. A second connector 64 of the rear connector set 60 is provided at a rear end of the middle partial electric wire 56m. A first connector 62 of the rear connector set 60 is provided at a front end of the rear partial electric wire 56r. A rear end of the rear partial electric wire 56r is electrically connected to the rear unit 8 (see FIG. 3). Each of the front partial electric wire 56f, the middle partial electric wire 56m, and the rear partial electric wire 56r includes various types of electric wires (e.g., electric wires for power transmission, electric wires for communication). When the front partial electric wire 56f, the middle partial electric wire 56m, and the rear partial electric wire 56r are electrically connected to each other, an electrical connection is established between the front unit 6 and the rear unit 8. This establishes, for example, a power transmission path between the control unit 28 (see FIG. 2) and the power supply interface 52 (see FIG. 3) and a communication path between the control unit 28 (see FIG. 2) and the trigger switch 50 (see FIG. 3).

[0056] (Configuration in the vicinity of the first connector 62) As shown in FIG. 5, the first connector 62 includes a plurality of first terminals 66 and a first connector housing 68. Each of the plurality of first terminals 66 is connected to a plurality of electric wires included in the middle electric wire portion 56m (rear electric wire portion 56r). The first connector housing 68 holds the plurality of first terminals 66. The first connector housing 68 includes a first connector housing main body 70, a mating protrusion 72 protruding forward from the first connector housing main body 70, and a plurality of terminal holes 74 formed in the front surface of the mating protrusion 72. A plurality of first terminals 66 are disposed in each of the plurality of terminal holes 74. A seal member 76 is attached to the outer surface of the mating protrusion 72. The outer diameter of the first connector housing 68 is smaller than the inner diameter of the inner surface of the operating rod 4. This allows the first connector housing 68 to pass through the inside of the operating rod 4.

[0057] As shown in FIG. 5 and FIG. 6, the work machine 2 includes a holding member 78 for holding the first connector 62 at the front end of the middle portion 4m (rear portion 4r). The holding member 78 includes a band portion 80, a first engaging portion 82, a second engaging portion 84, a first stopper portion 86, a second stopper portion 88, a third stopper portion 90, a first press-fit portion 92, a second press-fit portion 94, a third press-fit portion 96, and a guide protrusion 98. The band portion 80 has a C-shape with an open upper portion. The first engaging portion 82 is disposed at one end of the band portion 80 and protrudes radially inward from the band portion 80. The second engaging portion 84 is disposed at the other end of the band portion 80 and protrudes radially inward from the band portion 80. The first stopper portion 86 is disposed at the same position as the first engaging portion 82 in the circumferential direction and protrudes radially outward from the band portion 80. The second stopper portion 88 is disposed at the same position as the second engagement portion 84 in the circumferential direction, and protrudes radially outward from the band portion 80. The third stopper portion 90 is disposed at the middle portion of the band portion 80, and protrudes radially outward from the band portion 80. The rear surface of the third stopper portion 90 has a shape that fits into a notched groove 100 formed at the front end of the middle portion rod 4m (rear portion rod 4r). The first press-fit portion 92 is disposed at the same position as the first stopper portion 86 in the circumferential direction, and extends rearward from the rear end of the first stopper portion 86. The second press-fit portion 94 is disposed at the same position as the second stopper portion 88 in the circumferential direction, and extends rearward from the rear end of the second stopper portion 88. The third press-fit portion 96 is disposed at the same position as the third stopper portion 90 in the circumferential direction, and extends rearward from the rear end of the third stopper portion 90. A crushed rib 102 extending in the front-rear direction is formed in each of the first press-fit portion 92, the second press-fit portion 94, and the third press-fit portion 96. The guide protrusion 98 is disposed at the same position as the third stopper portion 90 in the circumferential direction, and protrudes radially outward from the outer surface of the third stopper portion 90.

[0058] The first connector housing body 70 is formed with an attachment groove 104 for attaching the holding member 78. The attachment groove 104 includes a band groove 106 for receiving the band portion 80, a first engagement groove 108 for receiving the first engagement portion 82, a second engagement groove 110 for receiving the second engagement portion 84, a first press-fit groove 112 for receiving the first press-fit portion 92, a second press-fit groove 114 for receiving the second press-fit portion 94, and a third press-fit groove 116 for receiving the third press-fit portion 96.

[0059] The holding member 78 is detachably attached to the first connector housing 68 (specifically, the attachment groove 104 of the first connector housing 68). When attaching the holding member 78 to the first connector housing 68, the holding member 78 is slid from below toward above the first connector housing 68. As a result, the band portion 80 is pushed outward in the radial direction by the outer surface of the first connector housing 68, and the first connector housing 68 passes through the opening of the band portion 80. Thereafter, the first engagement portion 82 is engaged with the first engagement groove 108, and the second engagement portion 84 is engaged with the second engagement groove 110, so that the holding member 78 can be attached to the first connector housing 68. In this state, the first engagement portion 82 and the second engagement portion 84 are urged radially inward by an elastic restoring force generated in the band portion 80. When removing the holding member 78 from the first connector housing 68, the first engagement portion 82 is pulled out from the first engagement groove 108 and the second engagement portion 84 is pulled out from the second engagement groove 110 against this biasing force. From this state, the holding member 78 can be removed from the first connector housing 68 by pushing the holding member 78 downward relative to the first connector housing 68. In the following, unless otherwise specified, it is assumed that the holding member 78 is attached to the first connector housing 68. When the holding member 78 is attached to the first connector housing 68, the first connector housing 68 cannot pass through the inside of the operating rod 4.

[0060] As shown in Fig. 7, the first connector housing 68 is held at the front end of the middle portion rod 4m (rear portion rod 4r) by the first stopper portion 86, the second stopper portion 88, and the third stopper portion 90 abutting against the front end of the middle portion rod 4m (rear portion rod 4r). The rear surface of the third stopper portion 90 fits into the notched groove 100 (see Fig. 5), preventing the first connector housing 68 from rotating relative to the middle portion rod 4m (rear portion rod 4r). The first press-fit portion 92 (see Fig. 5), the second press-fit portion 94 (see Fig. 5), and the third press-fit portion 96 (see Fig. 5) are each pressed radially between the outer surface of the first connector housing 68 and the inner surface of the middle portion rod 4m (rear portion rod 4r). This prevents the first connector housing 68 from rattling relative to the middle rod portion 4m (rear rod portion 4r).

[0061] As shown in FIG. 8, the first stopper portion 86, the second stopper portion 88, and the third stopper portion 90 are disposed at substantially equal intervals in the circumferential direction. The outer surfaces of the first stopper portion 86, the second stopper portion 88, and the third stopper portion 90 protrude outward from the outer surface of the first connector housing 68 and are retreated inward from the outer surface of the middle portion rod 4m (rear portion rod 4r). The outer surface of the guide projection 98 protrudes outward from the outer surface of the middle portion rod 4m (rear portion rod 4r). The outer surface of the band portion 80 shown in FIG. 7 is flush with the outer surface of the first connector housing 68 or is retreated inward from the outer surface of the first connector housing 68.

[0062] (Configuration in the vicinity of the second connector 64) As shown in FIG. 9, the second connector 64 includes a plurality of second terminals 118 and a second connector housing 120. Each of the plurality of second terminals 118 is connected to a plurality of electric wires included in the front portion electric wire 56f (middle portion electric wire 56m). Each of the plurality of second terminals 118 is disposed at a position corresponding to the plurality of first terminals 66 and the plurality of terminal holes 74 of the first connector 62 shown in FIG. 5. As shown in FIG. 9, the second connector housing 120 holds the plurality of second terminals 118. The second connector housing 120 includes a second connector housing main body 122, a mating recess 124, a flange portion 126, a positioning portion 128, and a plurality of engagement claws 130. The mating recess 124 is formed by recessing the rear portion of the second connector housing main body 122. The flange portion 126 spreads outward from the rear end of the second connector housing main body 122. The positioning portion 128 has a shape that fits into a notched groove 132 formed in the rear end of the front partial rod 4f (middle partial rod 4m). The multiple engaging claws 130 are arranged on the left and right sides of the second connector housing main body 122, one on each side.

[0063] As shown in FIG. 10, the multiple engagement claws 130 engage with multiple engagement holes 134 (some not shown) formed in the front rod portion 4f (middle rod portion 4m). The front surface of the flange portion 126 abuts against the rear end of the front rod portion 4f (middle rod portion 4m). The positioning portion 128 fits into the notched groove 132. As a result, the second connector housing 120 is held in a predetermined position at the rear end of the front rod portion 4f (middle rod portion 4m). Unlike the first connector housing 68, the second connector housing 120 cannot pass through the inside of the operating rod 4.

[0064] (Configuration of first connecting member 18) As shown in FIG. 11, the first connecting member 18 includes a cylindrical portion 136 extending in the front-rear direction. The rear end of the front portion rod 4f is inserted into the front opening 138 of the cylindrical portion 136. The front end of the middle portion rod 4m is inserted into the rear opening 140 of the cylindrical portion 136. Inside the cylindrical portion 136, the first connector 62 held at the front end of the middle portion rod 4m and the second connector 64 held at the rear end of the front portion rod 4f are connected to each other. Specifically, the mating protrusion 72 is mated with the mating recess 124, the multiple second terminals 118 are inserted into the multiple terminal holes 74, and the multiple second terminals 118 are connected to the multiple first terminals 66. This electrically connects the front portion electric wire 56f and the middle portion electric wire 56m. In addition, the seal member 76 provided on the mating protrusion 72 seals the gap between the outer surface of the mating protrusion 72 and the inner surface of the mating recess 124.

[0065] The cylindrical portion 136 is provided with a front guide groove 142. The front guide groove 142 is formed by recessing the inner surface of the cylindrical portion 136 toward the outside in the radial direction, and extends rearward from the front end of the cylindrical portion 136. The front guide groove 142 receives a first protruding pin 144 attached to the lower part of the front partial rod 4f so as to be slidable along the front-rear direction. This prevents the first connecting member 18 and the front partial rod 4f from rotating relative to each other. In addition, a slit (not shown) extending rearward from the front end of the cylindrical portion 136 is formed at the bottom of the front guide groove 142. In this embodiment, the slit is closed by tightening the bolt 146 and the nut 148 (see FIG. 1), and the diameter of the front part of the cylindrical portion 136 is reduced, thereby fixing the first connecting member 18 and the front partial rod 4f to each other. In addition, the nut 148 that fixes the front partial rod 4f is provided with a lever 150 (see FIG. 1) that is operated by the user. A user can tighten or loosen the nut 148 by operating the lever 150 even without a tool such as a wrench. With the nut 148 loosened, the user can separate the first connecting member 18 and the front partial rod 4f from each other by pulling out the front partial rod 4f from the cylindrical portion 136. When the first connecting member 18 and the front partial rod 4f are separated from each other, the connection between the first connector 62 and the second connector 64 is released.

[0066] The cylindrical portion 136 is provided with a rear guide groove 152. The rear guide groove 152 is formed by recessing the inner surface of the cylindrical portion 136 toward the outside in the radial direction, and extends forward from the rear end of the cylindrical portion 136. The rear guide groove 152 receives the guide protrusion 98 of the holding member 78 so as to be slidable along the front-rear direction. This prevents the first connecting member 18 and the holding member 78 (and thus the first connector 62 and the middle portion rod 4m) from rotating relative to each other. In addition, a slit (not shown) extending forward from the rear end of the cylindrical portion 136 is formed at the bottom of the rear guide groove 152. In this embodiment, the slit is closed by tightening the bolt 154 and the nut 156 (see FIG. 1), and the diameter of the rear portion of the cylindrical portion 136 is reduced, thereby fixing the first connecting member 18 and the middle portion rod 4m to each other. In addition, a member equivalent to the lever 150 (see FIG. 1) described above is not attached to the nut 156 that fixes the middle rod portion 4m. Normally, it is not expected that the first connecting member 18 and the middle rod portion 4m will be separated from each other by the user.

[0067] An inward flange 158 is provided on the cylindrical portion 136. The inward flange 158 is disposed rearward of the rear end of the front guide groove 142 and forward of the front end of the rear guide groove 152. The rear surface of the inward flange 158 abuts against the first stopper portion 86 (see FIG. 7), the second stopper portion 88 (see FIG. 7), and the third stopper portion 90 from the front side. As a result, the first stopper portion 86, the second stopper portion 88, and the third stopper portion 90 are sandwiched between the first connecting member 18 and the intermediate rod portion 4m.

[0068] The first connecting member 18 includes a movable lid 160. The movable lid 160 is supported by the cylindrical portion 136 via a shaft 162 so as to be able to swing. The movable lid 160 can move between an open position where the front opening 138 of the cylindrical portion 136 is open to the outside, and a closed position where the front opening 138 of the cylindrical portion 136 is closed by the movable lid 160. A torsion spring 164 is attached to the shaft 162. The torsion spring 164 biases the movable lid 160 toward the closed position. When the front portion rod 4f is separated from the first connecting member 18, the movable lid 160 moves from the open position toward the closed position and is then held in the closed position, so that foreign matter is prevented from entering the inside of the middle portion rod 4m.

[0069] The first connecting member 18 includes a locking member 166. The locking member 166 is a member for locking the front rod portion 4f to the first connecting member 18. The locking member 166 is disposed on the outside of the cylindrical portion 136. A recess 170 surrounded by a wall 168 extending in an annular shape is formed on the outer surface of the cylindrical portion 136, and the locking member 166 is disposed in the recess 170. The locking member 166 is supported by the cylindrical portion 136 via a shaft 172 so as to be able to swing. The locking member 166 includes a protruding portion 174 in a portion rearward of the shaft 172. The protruding portion 174 protrudes into the cylindrical portion 136 through a first through hole 176 formed in the first connecting member 18. In addition, a second through hole 178 into which the protruding portion 174 enters is provided on the outer surface of the front rod portion 4f. The protrusion 174 of the locking member 166 enters the second through hole 178 of the front rod 4f, thereby locking the front rod 4f to the first connecting member 18. A coil spring 180 is provided between the locking member 166 and the first connecting member 18. The coil spring 180 biases the locking member 166 upward in a portion forward of the shaft 172. This causes the protrusion 174 to be pushed downward. The locking member 166 also includes a release operation portion 182 for a user to operate in a portion forward of the shaft 172. When the release operation portion 182 is pushed in against the biasing force of the coil spring 180, the protrusion 174 comes out of the second through hole 178. This releases the lock by the locking member 166.

[0070] (Configuration of second connecting member 20) 12, the second connecting member 20 has substantially the same components as the first connecting member 18. Below, only the differences between the first connecting member 18 and the second connecting member 20 will be described. Among the components of the second connecting member 20, the parts common to the first connecting member 18 are given the same reference numerals as the first connecting member 18, and the description thereof will be omitted.

[0071] The rear end of the middle partial rod 4m is inserted into the front opening 138 of the cylindrical portion 136 of the second connecting member 20. The front end of the rear partial rod 4r is inserted into the rear opening 140 of the cylindrical portion 136. Inside the cylindrical portion 136, the first connector 62 held at the front end of the rear partial rod 4r and the second connector 64 held at the rear end of the middle partial rod 4m are connected to each other. This electrically connects the front partial electric wire 56f and the middle partial electric wire 56m.

[0072] The cylindrical portion 136 of the second connecting member 20 is provided with a front guide groove 186 having a different depth from the front guide groove 142 (see FIG. 11) of the first connecting member 18. For example, the depth of the front guide groove 186 is deeper than the depth of the front guide groove 142. The front guide groove 186 receives the second protruding pin 188 attached to the lower part of the middle part rod 4m so as to be slidable along the front-rear direction. This prevents the second connecting member 20 and the middle part rod 4m from rotating relative to each other. The protruding height of the second protruding pin 188 from the outer surface of the middle part rod 4m is higher than the protruding height of the first protruding pin 144 (see FIG. 11) from the outer surface of the front part rod 4f (see FIG. 11).

[0073] (Mechanism to prevent multiple connections of the 4m middle pole) As shown in FIG. 13, a user may prepare a plurality of intermediate rods 4m and attempt to connect them to each other. In this case, the rear end of another intermediate rod 4m is inserted into the front opening 138 of the cylindrical portion 136 of the first connecting member 18 provided at the front end of the intermediate rod 4m. However, in this embodiment, the second protruding pin 188 attached to the intermediate rod 4m is configured not to pass through the front opening 138. Specifically, the protruding height of the second protruding pin 188 attached to the intermediate rod 4m is configured to exceed the depth of the front guide groove 142 of the first connecting member 18. As a result, the intermediate rod 4m cannot be inserted into the cylindrical portion 136 to an appropriate position, so that the plurality of intermediate rods 4m are prevented from being connected to each other. The "appropriate position" here means, for example, the position where the first connector 62 and the second connector 64 are connected to each other.

[0074] (Means for attaching the front portion 4f to the front unit 6) As shown in FIG. 14, the rotating portion 36 of the front unit 6 includes a left member 190 and a right member 192. The left member 190 includes a first boss portion 196 having a female thread 194 formed therein, and a second boss portion 200 having a female thread 198 formed therein. The front partial rod 4f is provided with a first insertion hole 202 into which the first boss portion 196 is inserted from the left, and a second insertion hole 204 into which the second boss portion 200 is inserted from the left. The right member 192 is provided with a first mounting hole 206 disposed at a position corresponding to the first insertion hole 202, and a second mounting hole 208 disposed at a position corresponding to the second insertion hole 204. A first screw member 212 having a male thread 210 corresponding to the female thread 194 formed therein is attached to the first mounting hole 206. The male thread 210 of the first screw member 212 enters the first insertion hole 202 from the right and is screwed into the female thread 194 of the first boss portion 196. Also, a second screw member 216 having a male thread 214 formed therein that corresponds to the female thread 198 is attached to the second mounting hole 208. The male thread 214 of the second screw member 216 enters the second insertion hole 204 from the right and is screwed into the female thread 198 of the second boss portion 200.

[0075] To remove the front partial rod 4f from the front unit 6, it is first necessary to remove the first screw member 212 and the second screw member 216 using a tool (e.g., a screwdriver). Then, it is necessary to disassemble the rotating portion 36 into left and right parts, and to remove the first boss portion 196 from the first insertion hole 202 and the second boss portion 200 from the first insertion hole 202. Therefore, according to the above-mentioned attachment means, the front partial rod 4f is attached to the front unit 6 in a state in which it is difficult to remove.

[0076] (Means for attaching rear partial rod 4r to rear unit 8) As shown in FIG. 15, the rear housing 44 of the rear unit 8 includes a left member 218 and a right member 220. The left member 218 includes a third boss portion 224 having a female thread 222 formed therein, and a fourth boss portion 228 having a female thread 226 formed therein. The rear partial rod 4r includes a third insertion hole 230 into which the third boss portion 224 is inserted from the left, and a fourth insertion hole 232 into which the fourth boss portion 228 is inserted from the left. The right member 220 includes a third mounting hole 234 disposed at a position corresponding to the third insertion hole 230, and a fourth mounting hole 236 disposed at a position corresponding to the fourth insertion hole 232. A third screw member 240 having a male thread 238 corresponding to the female thread 222 formed therein is attached to the third mounting hole 234. The male thread 238 of the third screw member 240 enters the third insertion hole 230 from the right and is screwed into the female thread 222 of the third boss portion 224. Also, a fourth screw member 244 having a male thread 242 formed therein that corresponds to the female thread 226 is attached to the fourth mounting hole 236. The male thread 242 of the fourth screw member 244 enters the fourth insertion hole 232 from the right and is screwed into the female thread 226 of the fourth boss portion 228.

[0077] To remove the rear partial rod 4r from the rear unit 8, it is first necessary to remove the third screw member 240 and the fourth screw member 244 using a tool (e.g., a screwdriver). Then, it is necessary to disassemble the rear housing 44 into left and right parts, and remove the third boss portion 224 from the third insertion hole 230 and the fourth boss portion 228 from the fourth insertion hole 232. Therefore, according to the above-mentioned attachment means, the rear partial rod 4r is attached to the rear unit 8 in a state in which it is difficult to remove.

[0078] (Example 2; work machine 302) As shown in FIG. 16, the working machine 302 differs from the working machine 2 of the first embodiment in that it does not include the middle partial rod 4m and the first connecting member 18. In this embodiment, the front partial rod 4f and the rear partial rod 4r are connected to each other by the second connecting member 20. When the front partial rod 4f and the rear partial rod 4r are connected to each other, the second connector 64 (see FIG. 10) provided at the rear end of the front partial rod 4f and the first connector 62 (see FIG. 7) provided at the front end of the rear partial rod 4r are connected to each other. This electrically connects the front partial electric wire 56f (see FIG. 4) and the rear partial electric wire 56r (see FIG. 4).

[0079] (Example 3; work machine 402) As shown in FIG. 17, the working machine 402 differs from the working machine 302 of the second embodiment in that it does not include a rear partial rod 4r. In this embodiment, the second connecting member 20 is fixed to the rear housing 44. The front partial rod 4f is connected to the front part of the second connecting member 20 in the same manner as in the second embodiment. The rear end of the front partial rod 4f of this embodiment is formed with a notched groove 100 (see FIG. 5) instead of the notched groove 132 (see FIG. 9). The rear end of the front partial rod 4f is provided with a first connector 62 (see FIG. 7) instead of the second connector 64 (see FIG. 10). The first connector 62 is electrically connected to the front partial electric wire 56f (see FIG. 4). The second connecting member 20 of this embodiment is provided with a configuration for receiving the second connector 64 (for example, the notched groove 132, a plurality of engagement holes 134). The second connecting member 20 is provided with the second connector 64. The second connector 64 is electrically connected to the rear unit 8. When the front partial rod 4f is inserted into the front opening 138 of the second connecting member 20, the first connector 62 provided at the rear end of the front partial rod 4f and the second connector 64 provided on the second connecting member 20 are connected to each other. This electrically connects the front partial electric wire 56f and the rear unit 8.

[0080] (Example 4; working machine 502) As shown in FIG. 18, the working machine 502 differs from the working machine 302 of the second embodiment in that it does not include a front partial rod 4f. In this embodiment, the second connecting member 20 is fixed to the front housing 22 in a state in which the second connecting member 20 is turned back and forth from the state of the second embodiment. The rear partial rod 4r is connected to the rear part of the second connecting member 20. A first connector 62 (see FIG. 7) is provided at the front end of the rear partial rod 4r, as in the second embodiment. In addition, a second connector 64 (see FIG. 10) is provided inside the second connecting member 20. This second connector 64 is electrically connected to the front unit 6. When the rear partial rod 4r is connected to the second connecting member 20, the first connector 62 and the second connector 64 are connected to each other, thereby electrically connecting the rear partial electric wire 56r (see FIG. 4) and the front unit 6.

[0081] (Modification) The working machine 2, 302, 402, 502 may be, for example, a grass cutter, pruning shears, pole hedge trimmer, pole pruner, lighting equipment, or rebar binding machine. For this purpose, the working unit 14 may be replaced with a rotary blade, scissors, a blade for a hedge trimmer, a pruner blade, a light source device (e.g., LED, fluorescent lamp), or a rebar binding device. The rebar binding device here may be a device capable of performing a series of operations of winding a wire around a point where multiple rebars intersect, twisting the wire, and cutting the wire.

[0082] A handle unit that can be held by a user may be provided midway along the operating rod 4. The handle unit may be provided with a button that can be operated by a user (for example, a power button). In this case, the button and the control unit 28 may be electrically connected by an electric wire disposed inside the operating rod 4.

[0083] The second connector 64 may be configured to be able to pass through the inside of the operating rod 4. In this case, the work implement 2, 302, 402 may further include a member that holds the second connector 64 at the rear end of the front partial rod 4f (middle partial rod 4m). The member may have a similar configuration to the holding member 78.

[0084] The first connector 62 may be fixed to the operating rod 4 by a screw instead of being held on the operating rod 4 by the holding member 78. Alternatively, the first connector 62 may be adhered to the operating rod 4 by an adhesive.

[0085] In the first embodiment, the position of the first connector 62 of the front connector set 58 and the position of the second connector 64 of the front connector set 58 may be interchanged. That is, the first connector 62 of the front connector set 58 may be held at the rear end of the front partial rod 4f. The second connector 64 of the front connector set 58 may be held at the front end of the middle partial rod 4m.

[0086] In the first embodiment, the position of the first connector 62 of the rear connector set 60 and the position of the second connector 64 of the rear connector set 60 may be interchanged. That is, the first connector 62 of the rear connector set 60 may be held at the rear end of the middle partial rod 4m. The second connector 64 of the rear connector set 60 may be held at the front end of the rear partial rod 4r.

[0087] In the second embodiment, the positions of the first connector 62 and the second connector 64 may be interchanged. That is, the first connector 62 may be held at the rear end of the front partial rod 4f. The second connector 64 may be held at the front end of the rear partial rod 4r.

[0088] The operating rod 4 may be a cylindrical member having a polygonal cross-sectional shape.

[0089] The holding member 78 may not include any one of the first stopper portion 86, the second stopper portion 88, and the third stopper portion 90. Alternatively, the holding member 78 may not include any two of the first stopper portion 86, the second stopper portion 88, and the third stopper portion 90. Alternatively, the holding member 78 may include an additional stopper portion in addition to the first stopper portion 86, the second stopper portion 88, and the third stopper portion 90.

[0090] An outer surface of at least one of the first stopper portion 86 , the second stopper portion 88 , and the third stopper portion 90 may protrude outward beyond the outer surface of the operating rod 4 .

[0091] The retaining member 78 does not necessarily have to include at least one of the first press-fit portion 92, the second press-fit portion 94, and the third press-fit portion 96.

[0092] The notch groove 100 does not necessarily have to be formed at the front end of the middle partial rod 4m (rear partial rod 4r).

[0093] The holding member 78 does not have to include the guide protrusion 98. In this case, the rear guide groove 152 does not have to be provided in the cylindrical portion 136 of the first connecting member 18 (or the second connecting member 20).

[0094] The inward flange 158 does not necessarily have to be provided on the cylindrical portion 136 of the first connecting member 18 (or the second connecting member 20).

[0095] The work implement 2 , 302 , 402 , 502 may include a mounting (eg, a pin) for mounting the retaining member 78 to the first connector housing 68 .

[0096] The front partial rod 4f (or the middle partial rod 4m, the rear partial rod 4r) and the middle partial rod 4m (or the rear partial rod 4r, the front partial rod 4f) may be connected by a method or means different from that of the above embodiment. For example, the two may be connected by screwing a male thread formed at the end of the front partial rod 4f (or the middle partial rod 4m, the rear partial rod 4r) into a female thread formed at the end of the middle partial rod 4m (or the rear partial rod 4r, the front partial rod 4f).

[0097] The rear unit 8 may be provided with a power cord for connecting to an external power source instead of the battery pack B. In this case, the power interface 52 may be configured to be electrically connected to the power cord.

[0098] (Correspondence) In one or more embodiments, the working machine 2, 302, 402, 502 (an example of a working machine) includes a rear partial rod 4r (or a front partial rod 4f, a middle partial rod 4m) (an example of a first operating rod) extending in the front-rear direction, a front unit 6 disposed forward of the rear partial rod 4r (or the front partial rod 4f, the middle partial rod 4m) and equipped with a working section 14, a rear unit 8 disposed rearward of the rear partial rod 4r (or the front partial rod 4f, the middle partial rod 4m), and a rear partial electric wire 56r (or a front partial electric wire 56f, the middle partial electric wire 56m) (an example of a first electric wire) disposed inside the rear partial rod 4r (or the front partial rod 4f, the middle partial rod 4m). The connector includes a plurality of first terminals 66 electrically connected to the rear partial electric wire 56r (or the front partial electric wire 56f, the middle partial electric wire 56m), a first connector housing 68 that holds the plurality of first terminals 66 and is configured to be able to pass through the inside of the rear partial rod 4r (or the front partial rod 4f, the middle partial rod 4m) in the front-rear direction, a holding member 78 (an example of a holding part) that holds the first connector housing 68 at one end of the rear partial rod 4r (or the front partial rod 4f, the middle partial rod 4m), a plurality of second terminals 118, and a second connector housing 120 that holds the plurality of second terminals 118 and is detachably attached to the first connector housing 68. The first connector housing 68 and the second connector housing 120 are attached to each other, so that the plurality of first terminals 66 and the plurality of second terminals 118 are electrically connected to each other.

[0099] If the first connector housing 68 cannot pass through the inside of the rear partial rod 4r (or the front partial rod 4f or the middle partial rod 4m), it is expected that the connector assembly work will require time and effort to release the connection between the first connector housing 68 and the rear partial electric wire 56r (or the front partial electric wire 56f or the middle partial electric wire 56m). Alternatively, it is expected that the rear partial rod 4r (or the front partial rod 4f or the middle partial rod 4m) will require time and effort to disassemble. According to the above configuration, the first connector housing 68 can pass through the inside of the rear partial rod 4r (or the front partial rod 4f or the middle partial rod 4m). Therefore, when assembling the connector, there is no need to release the connection between the first connector housing 68 and the rear electric wire 56r (or the front electric wire 56f or the middle electric wire 56m) or to disassemble the rear rod 4r (or the front rod 4f or the middle rod 4m). This reduces the time and effort required for assembling the connector.

[0100] In one or more embodiments, the retaining member 78 is removably attached to the first connector housing 68. The retaining member 78 retains the first connector housing 68 at one end of the rear partial rod 4r (or the front partial rod 4f, the middle partial rod 4m).

[0101] For example, it is also conceivable to adhere the first connector housing 68 to the rear partial rod 4r (or the front partial rod 4f, the middle partial rod 4m) by an adhesive. However, if the first connector housing 68 is adhered to the rear partial rod 4r (or the front partial rod 4f, the middle partial rod 4m), it becomes difficult to remove the first connector housing 68 from the rear partial rod 4r (or the front partial rod 4f, the middle partial rod 4m). Therefore, it becomes difficult to redo the connector assembly work. This configuration may cause trouble to the manufacturer of the work machine 2, 302, 402, 502. According to the above configuration, the holding member 78 that holds the first connector housing 68 to the rear partial rod 4r (or the front partial rod 4f, the middle partial rod 4m) is configured to be detachable from the first connector housing 68. Therefore, even after the connector assembly work is completed, the connector assembly work can be redo. Therefore, the inconvenience felt by the manufacturer of the work machine 2, 302, 402, 502 can be reduced.

[0102] In one or more embodiments, the retaining member 78 includes a first stopper portion 86, a second stopper portion 88, and a third stopper portion 90 that protrude outward from the outer surface of the first connector housing 68 when the retaining member 78 is attached to the first connector housing 68. The first stopper portion 86, the second stopper portion 88, and the third stopper portion 90 abut against the rear partial rod 4r (or the front partial rod 4f or the middle partial rod 4m) in the front-to-rear direction, thereby retaining the first connector housing 68 at one end of the rear partial rod 4r (or the front partial rod 4f or the middle partial rod 4m).

[0103] According to the above configuration, the first connector housing 68 can be held by the rear partial rod 4r (or the front partial rod 4f or the middle partial rod 4m) in a relatively simple manner.

[0104] In one or more embodiments, the stop portion includes a first stop portion 86 and a second stop portion 88 circumferentially offset from the first stop portion 86 .

[0105] If the holding member 78 abuts against the end of the rear partial rod 4r (or the front partial rod 4f or the middle partial rod 4m) at one point, the position of the first connector housing 68 relative to the end of the rear partial rod 4r (or the front partial rod 4f or the middle partial rod 4m) may not be stable. According to the above configuration, the holding member 78 abuts against the end of the rear partial rod 4r (or the front partial rod 4f or the middle partial rod 4m) at at least two points. This makes it possible to stabilize the position of the first connector housing 68 relative to the end of the rear partial rod 4r (or the front partial rod 4f or the middle partial rod 4m).

[0106] In one or more embodiments, the stop portion includes a third stop portion 90 circumferentially offset relative to each of the first and second stop portions 86, 88.

[0107] According to the above configuration, the holding member 78 abuts against the end of the rear partial rod 4r (or the front partial rod 4f, the middle partial rod 4m) at at least three points. This makes it possible to further stabilize the position of the first connector housing 68 with respect to the end of the rear partial rod 4r (or the front partial rod 4f, the middle partial rod 4m).

[0108] In one or more embodiments, when viewed along the fore-and-aft direction, the outer surfaces of the first stopper portion 86, the second stopper portion 88, and the third stopper portion 90 are recessed inward from the outer surface of the rear partial rod 4r (or the front partial rod 4f, the middle partial rod 4m).

[0109] If the outer surfaces of the first stopper portion 86, the second stopper portion 88, and the third stopper portion 90 protrude outward from the outer surface of the rear partial rod 4r (or the front partial rod 4f, the middle partial rod 4m), inconvenience may occur. For example, when attaching the first connecting member 18 (or the second connecting member 20) (an example of a member) to the outside of the rear partial rod 4r (or the front partial rod 4f, the middle partial rod 4m), it is expected that the first stopper portion 86, the second stopper portion 88, and the third stopper portion 90 will interfere with the first connecting member 18 (or the second connecting member 20). According to the above configuration, the outer surfaces of the first stopper portion 86, the second stopper portion 88, and the third stopper portion 90 are retracted inward from the outer surface of the rear partial rod 4r (or the front partial rod 4f, the middle partial rod 4m), so that such inconvenience can be suppressed.

[0110] In one or more embodiments, the retaining member 78 has a first press-fit portion 92, a second press-fit portion 94, and a third press-fit portion 96 that penetrate into the inside of the rear partial rod 4r (or the front partial rod 4f, the middle partial rod 4m) via one end of the rear partial rod 4r (or the front partial rod 4f, the middle partial rod 4m) and are pressed between the outer surface of the first connector housing 68 and the inner surface of the rear partial rod 4r (or the front partial rod 4f, the middle partial rod 4m).

[0111] Since the first connector housing 68 is configured to be able to pass through the rear partial rod 4r (or the front partial rod 4f, the middle partial rod 4m), a gap may be generated between the outer surface of the first connector housing 68 and the inner surface of the rear partial rod 4r (or the front partial rod 4f, the middle partial rod 4m). If this gap cannot be filled, the first connector housing 68 may rattle relative to the rear partial rod 4r (or the front partial rod 4f, the middle partial rod 4m). According to the above configuration, the first press-fit portion 92, the second press-fit portion 94, and the third press-fit portion 96 at least partially fill the above gap. Therefore, rattling of the first connector housing 68 relative to the rear partial rod 4r (or the front partial rod 4f, the middle partial rod 4m) can be suppressed.

[0112] In one or more embodiments, one end of the rear partial rod 4r (or the front partial rod 4f or the middle partial rod 4m) is provided with a notched groove 100 that receives the third stopper portion 90 along the front-rear direction.

[0113] According to the above configuration, the cutout groove 100 receives the third stopper portion 90, thereby suppressing the first connector housing 68 from moving in the circumferential direction of the rear partial rod 4r (or the front partial rod 4f, the middle partial rod 4m). Therefore, the rear partial rod 4r (or the front partial rod 4f, the middle partial rod 4m) and the first connector housing 68 are positioned relative to each other in the circumferential direction of the rear partial rod 4r (or the front partial rod 4f, the middle partial rod 4m).

[0114] In one or more embodiments, the work machine 2, 302, 402, 502 further includes a first connecting member 18 (or a second connecting member 20) provided at one end of the rear partial rod 4r (or the front partial rod 4f, the middle partial rod 4m). The first connecting member 18 (or the second connecting member 20) includes a cylindrical portion 136 into which one end of the rear partial rod 4r (or the front partial rod 4f, the middle partial rod 4m) is inserted. The holding member 78 includes a guide protrusion 98 that protrudes outward from the outer surface of the rear partial rod 4r (or the front partial rod 4f, the middle partial rod 4m) when viewed along the front-rear direction. The cylindrical portion 136 includes a rear guide groove 152 (an example of a guide groove) that slidably receives the guide protrusion 98 along the front-rear direction.

[0115] According to the above configuration, the rear guide groove 152 receives the guide protrusion 98, thereby preventing the first connector housing 68 from moving in the circumferential direction of the cylindrical portion 136. Therefore, the first connecting member 18 (or the second connecting member 20) and the first connector housing 68 are positioned relative to each other in the circumferential direction of the cylindrical portion 136.

[0116] In one or more embodiments, the work machine 2, 302, 402, 502 further includes a first connecting member 18 (or a second connecting member 20) provided at one end of the rear partial rod 4r (or the front partial rod 4f, the middle partial rod 4m). The first connecting member 18 (or the second connecting member 20) includes a cylindrical portion 136 into which one end of the rear partial rod 4r (or the front partial rod 4f, the middle partial rod 4m) is inserted. The cylindrical portion 136 includes an inward flange 158 (an example of a support portion) that abuts against the first stopper portion 86, the second stopper portion 88, and the third stopper portion 90 from the opposite side of one end of the rear partial rod 4r (or the front partial rod 4f, the middle partial rod 4m) when viewed from the first stopper portion 86, the second stopper portion 88, and the third stopper portion 90.

[0117] According to the above configuration, the first stopper portion 86, the second stopper portion 88, and the third stopper portion 90 are sandwiched between one end of the rear partial rod 4r (or the front partial rod 4f, the middle partial rod 4m) and the inward flange 158 of the cylindrical portion 136 in the front-rear direction. This prevents the first connector housing 68 from moving in the front-rear direction relative to the rear partial rod 4r (or the front partial rod 4f, the middle partial rod 4m) and the first connecting member 18 (or the second connecting member 20). Therefore, the first connector housing 68 is positioned in the front-rear direction relative to the rear partial rod 4r (or the front partial rod 4f, the middle partial rod 4m) and the first connecting member 18 (or the second connecting member 20).

[0118] In one or more embodiments, the retaining member 78 includes a band portion 80 extending over more than half the circumference of the first connector housing 68, a first engagement portion 82 protruding from one end of the band portion 80 toward the first connector housing 68, and a second engagement portion 84 protruding from the other end of the band portion 80 toward the first connector housing 68. The first connector housing 68 includes a first engagement groove 108 (an example of a first recess) corresponding to the first engagement portion 82, and a second engagement groove 110 (an example of a second recess) corresponding to the second engagement portion 84. When the band portion 80 is pushed outward in the radial direction by the outer surface of the first connector housing 68, the first engagement portion 82 engages with the first engagement groove 108, and the second engagement portion 84 engages with the second engagement groove 110.

[0119] It is also possible to attach the retaining member 78 to the first connector housing 68 using a fixture such as a pin. However, this configuration increases the number of parts, which may increase the manufacturing cost of the work machine 2, 302, 402, 502. According to the above configuration, the retaining member 78 can be attached to the first connector housing 68 without using a fixture by utilizing the elasticity of the retaining member 78. This allows the number of parts to be reduced, and therefore the manufacturing cost of the work machine 2, 302, 402, 502 to be reduced.

[0120] In one or more embodiments, the other end of the rear partial rod 4r (or the front partial rod 4f or the middle partial rod 4m) is attached to the rear unit 8 or the front unit 6 in a state in which it is difficult to remove.

[0121] It is expected that the rear unit 8 (or the front unit 6) will be provided with a relatively heavy component (for example, the battery pack B). For this reason, it is expected that a relatively heavy load will be applied to the connection point between the operating rod 4 and the rear unit 8 (or the front unit 6). Here, if the operating rod 4 is attached to the rear unit 8 (or the front unit 6) in a state in which it is easily detachable, it may be difficult to ensure rigidity at the connection point between the two that can withstand the above load. According to the above configuration, the operating rod 4 is attached to the rear unit 8 (or the front unit 6) in a state in which it is difficult to detach it. In this configuration, the operating rod 4 can be attached relatively firmly to the rear unit 8 (or the front unit 6). For this reason, it is easy to ensure rigidity at the connection point between the two that can withstand the above load.

[0122] In one or more embodiments, the working machine 2, 302 further includes a middle portion rod 4m (or a rear portion rod 4r, a front portion rod 4f) (an example of a second operating rod) that extends in the front-rear direction and is disposed between the front unit 6 and the rear unit 8, and a middle portion electric wire 56m (or a rear portion electric wire 56r, a front portion electric wire 56f) (an example of a second electric wire) that is disposed inside the middle portion rod 4m (or a rear portion rod 4r, a front portion rod 4f). One end of the middle portion rod 4m (or a rear portion rod 4r, a front portion rod 4f) is detachably attached to one end of the rear portion rod 4r (or a front portion rod 4f, a middle portion rod 4m). The middle portion electric wire 56m (or a rear portion electric wire 56r, a front portion electric wire 56f) is electrically connected to a plurality of second terminals 118. The second connector housing 120 is held at one end of the middle partial rod 4m (or the rear partial rod 4r or the front partial rod 4f).

[0123] The size of the working machine 2, 302 equipped with the operating rod 4 tends to be large in the front-rear direction. For this reason, it may be difficult to store (or pack) the working machine 2, 302. According to the above configuration, the working machine 2, 302 can be divided between the rear partial rod 4r (or the front partial rod 4f and the middle partial rod 4m) and the middle partial rod 4m (or the rear partial rod 4r and the front partial rod 4f). By dividing the working machine 2, 302, the size of the working machine 2, 302 in the front-rear direction can be reduced. This makes it easier to store (or pack) the working machine 2, 302.

[0124] In one or more embodiments, the other end of the middle partial rod 4m (or the rear partial rod 4r or the front partial rod 4f) is attached to the front unit 6 or the rear unit 8 in a state in which it is difficult to remove.

[0125] It is expected that the front unit 6 (or the rear unit 8) will be provided with a relatively heavy component (e.g., the electric motor 24). For this reason, it is expected that a relatively heavy load will be applied to the connection point between the operating rod 4 and the front unit 6 (or the rear unit 8). Here, if the operating rod 4 is attached to the front unit 6 (or the rear unit 8) in a state in which it is easily detachable, it may be difficult to ensure rigidity at the connection point between the two that can withstand the above load. According to the above configuration, the operating rod 4 is attached to the front unit 6 (or the rear unit 8) in a state in which it is difficult to detach it. In this configuration, the operating rod 4 can be attached relatively firmly to the front unit 6 (or the rear unit 8). For this reason, it is easy to ensure rigidity at the connection point between the two that can withstand the above load.

[0126] In one or more embodiments, the work machine 2 further includes a front partial rod 4f (or a middle partial rod 4m, a rear partial rod 4r) (an example of a third operating rod) that extends in the fore-and-aft direction and is disposed between the front unit 6 and the rear unit 8. One end of the front partial rod 4f (or the middle partial rod 4m, the rear partial rod 4r) is detachably attached to the other end of the rear partial rod 4r (or the front partial rod 4f, the middle partial rod 4m).

[0127] According to the above configuration, the working machine 2 can be divided not only between the rear partial rod 4r (or the front partial rod 4f and the middle partial rod 4m) and the middle partial rod 4m (or the rear partial rod 4r and the front partial rod 4f), but also between the middle partial rod 4m (or the rear partial rod 4r and the front partial rod 4f) and the front partial rod 4f (or the middle partial rod 4m and the rear partial rod 4r). This makes it possible to make the working machine 2 more compact, making it easier to store (or pack) the working machine 2.

[0128] In one or more embodiments, the other end of the front partial rod 4f (or the middle partial rod 4m or the rear partial rod 4r) is attached to the front unit 6 or the rear unit 8 in a state in which it is difficult to remove.

[0129] It is expected that the front unit 6 (or the rear unit 8) will be provided with a relatively heavy component (e.g., the electric motor 24). For this reason, it is expected that a relatively heavy load will be applied to the connection point between the operating rod 4 and the front unit 6 (or the rear unit 8). Here, if the operating rod 4 is attached to the front unit 6 (or the rear unit 8) in a state in which it is easily detachable, it may be difficult to ensure rigidity at the connection point between the two that can withstand the above load. According to the above configuration, the operating rod 4 is attached to the front unit 6 (or the rear unit 8) in a state in which it is difficult to detach it. In this configuration, the operating rod 4 can be attached relatively firmly to the front unit 6 (or the rear unit 8). For this reason, it is easy to ensure rigidity at the connection point between the two that can withstand the above load.

[0130] In one or more embodiments, the rear unit 8 includes a power interface 52 that connects to a power source. The rear partial wire 56r (or the front partial wire 56f or the middle partial wire 56m) functions as at least a part of the power transmission path between the working unit 14 and the power interface 52.

[0131] It is also conceivable to provide the power supply interface 52 in the front unit 6. However, in this configuration, components for supplying power (e.g., battery pack B, power cord) are attached to the front unit 6, which may increase the weight of the front unit 6. As a result, the handling performance of the working unit 14 provided in the front unit 6 may decrease. According to the above configuration, the power supply interface 52 is provided in the rear unit 8. Therefore, it is not necessary to attach components for supplying power to the front unit 6, which makes it possible to reduce the weight of the front unit 6. This makes it possible to improve the handling performance of the working unit 14. [Explanation of symbols]

[0132] 2: Work equipment 4: Operating rod 4f: Front part of the pole 4m: Middle part 4r: Rear partial pole 6: Front unit 8: Rear unit 10: Guide bar 12: Saw chain 14: Working section 18: First connecting member 20: Second connecting member 22: Front housing 24: Electric motor 26: Reduction mechanism 28: Control unit 30: Oil tank 32: Oil pump 34: Front housing body 36: Rotating part 36a: Push-in operation section 38: Cap 40:Introduction tube 42: Outlet pipe 44: Rear housing 46: Trigger lever 48: Trigger lock 50: Trigger switch 52: Power interface 54: Grip 56f: Front part electric wire 56m: Middle part electric wire 56r: Rear partial electric wire 58: Front connector set 60: Rear connector set 62: First connector 64: Second connector 66: Multiple first terminals 68: First connector housing 70: First connector housing body 72: Fitting protrusion 74: Multiple terminal holes 76: Sealing material 78: Retaining member 80: Band 82: First engagement portion 84: Second engagement portion 86: First stopper part 88: Second stopper part 90: Third stopper part 92: First press-fit section 94: Second press-fit section 96: Third press-fit section 98: Guide protrusion 100: Notched groove 102: Crushed ribs 104: Mounting groove 106: Band groove 108: First engagement groove 110: Second engagement groove 112: First press groove 114: Second press groove 116: 3rd press groove 118: Multiple second terminals 120: Second connector housing 122: Second connector housing body 124: Fitting recess 126: Flange part 128: Positioning section 130: Multiple engaging claws 132: Notched groove 134: Engagement hole 136: Cylindrical part 138: Front opening 140: Rear opening 142: Front guide groove 144: First protruding pin 146: Bolt 148: Nut 150: Lever 152: Rear guide groove 154: Bolt 156: Nut 158: Inward flange 160: Movable lid 162: Shaft 164: Torsion spring 166: Locking member 168: Wall 170: Recess 172: Shaft 174:Protrusion 176: First through hole 178: Second through hole 180: Coil spring 182: Release operation section 186: Front guide groove 188: Second protruding pin 190: Left side member 192: Right side member 194: Female thread 196: First boss section 198: Female thread 200: Second boss section 202: First insertion hole 204: Second insertion hole 206: First mounting hole 208: Second mounting hole 210: Male thread 212: First screw member 214: Male thread 216: Second screw member 218: Left side member 220: Right side member 222: Female thread 224: 3rd boss section 226: Female thread 228: 4th boss 230: Third insertion hole 232: 4th insertion hole 234: 3rd mounting hole 236: 4th mounting hole 238: Male thread 240: Third screw member 242: Male thread 244: Fourth screw member 302: Work machine 402: Work machine 502: Work machine B: Battery pack

Claims

1. a first operating rod extending in the front-rear direction; a front unit disposed forward of the first operating rod and including a working unit; a rear unit disposed rearward of the first operating rod; a first electric wire disposed inside the first operating rod; a first terminal electrically connected to the first wire; a first connector housing that holds the first terminal and is configured to be able to pass through an interior of the first operating rod in a front-rear direction; a holding portion that holds the first connector housing at one end of the first operating rod; A second terminal; a second connector housing that holds the second terminals and is detachably attached to the first connector housing, The first connector housing and the second connector housing are attached to each other to electrically connect the first terminal and the second terminal.

2. the holding portion includes a holding member detachably attached to the first connector housing, The work machine according to claim 1 , wherein the holding member holds the first connector housing at the one end of the first operating rod.

3. the holding member includes a stopper portion that protrudes outward beyond an outer surface of the first connector housing when the holding member is attached to the first connector housing, The work machine according to claim 2 , wherein the stopper portion abuts against the first operating rod in the front-rear direction, thereby holding the first connector housing at the one end of the first operating rod.

4. The work machine according to claim 3 , wherein the stopper portion comprises a first stopper portion and a second stopper portion disposed offset in the circumferential direction from the first stopper portion.

5. The work implement according to claim 4 , wherein the stopper portion includes a third stopper portion disposed circumferentially offset from each of the first stopper portion and the second stopper portion.

6. The work machine according to claim 3, wherein an outer surface of the stopper portion is retracted inward from an outer surface of the first operating rod when viewed in the front-rear direction.

7. 4. The work machine of claim 3, wherein the retaining member is provided with a press-fit portion that enters the inside of the first operating rod via the one end of the first operating rod and is pressed between the outer surface of the first connector housing and the inner surface of the first operating rod.

8. The work implement according to claim 3 , wherein the one end of the first operating rod is provided with a notched groove that receives the stopper portion along the front-rear direction.

9. The device further includes a connecting member provided at the one end of the first operating rod, the connecting member includes a cylindrical portion into which the one end of the first operating rod is inserted, the holding member includes a guide protrusion that protrudes outward from an outer surface of the first operating rod when viewed along the front-rear direction, The work machine according to claim 3 , wherein the cylindrical portion has a guide groove that receives the guide protrusion so as to be slidable along the front-rear direction.

10. The device further includes a connecting member provided at the one end of the first operating rod, the connecting member includes a cylindrical portion into which the one end of the first operating rod is inserted, The work machine according to claim 3 , wherein the cylindrical portion includes a support portion that abuts against the stopper portion from the opposite side of the one end portion of the first operating rod as viewed from the stopper portion.

11. the holding member includes a band portion extending over at least halfway around the first connector housing, a first engaging portion protruding from one end of the band portion toward the first connector housing, and a second engaging portion protruding from the other end of the band portion toward the first connector housing, the first connector housing includes a first recess corresponding to the first engaging portion and a second recess corresponding to the second engaging portion, 3. The work machine of claim 2, wherein when the band portion is pushed radially outward by the outer surface of the first connector housing, the first engagement portion engages with the first recess and the second engagement portion engages with the second recess.

12. The work machine according to claim 1 , wherein the other end of the first operating rod is attached to the rear unit or the front unit in a manner that makes it difficult to remove.

13. a second operating rod extending in the front-rear direction and disposed between the front unit and the rear unit; The second operating rod further includes a second electric wire disposed inside the second operating rod, one end of the second operating rod is detachably attached to the one end of the first operating rod, the second wire is electrically connected to the second terminal; The work machine according to claim 1 , wherein the second connector housing is held at the one end of the second operating rod.

14. The work machine according to claim 13, wherein the other end of the second operating rod is attached to the front unit or the rear unit in a manner that makes it difficult to remove.

15. The vehicle further includes a third operating rod extending in the front-rear direction and disposed between the front unit and the rear unit, The work machine according to claim 13, wherein one end of the third operating rod is detachably attached to the other end of the second operating rod.

16. The work machine according to claim 15, wherein the other end of the third operating rod is attached to the front unit or the rear unit in a state in which it is difficult to remove.

17. the rear unit includes a power interface for connecting to a power source; The work machine according to claim 1 , wherein the first electric wire functions as at least a part of a power transmission path between the work unit and the power supply interface.

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