JP2013085529A - Reaping blade unit, and reaper including the same unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a new reaping blade unit without collecting rubbish such as branches, leaves, etc., in a reaping blade unit, etc., and without an increase in its production cost by having a simple structure, and a reaper including such reaping blade unit.SOLUTION: This reaping blade unit 21 includes a blade-fixing plate 22 fixed at the bottom part of a housing 11a and also formed as elongating in longitudinal direction for projecting toward the front surface side of the housing 11a, a blade holder 23 which is fixed at the upper surface side of the blade-fixing plate 22 and is a long length member that has a concave cross sectional shape and installed by facing the concave opening 23a to the upper surface side, movable blades 21a, 21b freely capable of reciprocating linear motion between the blade-fixing plate 22 and blade holder 23 along the longitudinal direction, and a cover member 41 capable of being slide-mounted along the longitudinal direction of the blade holder 23 to block the opening 23a of the blade holder 23.

Description

  The present invention relates to a cutting blade unit and a reaping machine including the cutting blade unit, and more particularly, to a cutting blade unit to which a chip receiver can be attached and a reaping machine including the cutting blade unit.

  Conventionally, when cutting or pruning plants and hedges, a trimming machine such as a hedge trimmer has been used. In this type of reaper, for example, as described in Patent Document 1 below, two movable blades are inserted and installed between a blade fixing plate and a blade holder, and the two movable blades are elongated in opposite phases. A cutting blade structure capable of reciprocating linear movement along the direction is employed.

JP 2005-6534 A

  However, in the conventional reaping machine represented by the above-mentioned Patent Document 1, the blade holder fixedly installed on the upper surface side of the two movable blades has a concave cross section, and the concave opening is on the upper surface side. Since the configuration to be installed was generally adopted, when cutting branches and leaves such as plants and hedges using a reaping machine, the cut branches and leaves enter the opening on the blade holder upper surface side, There existed a problem that the work which removes this will generate | occur | produce. In particular, inside the opening on the blade holder upper surface side, a plurality of bolts / nuts are installed in order to connect the blade holder to the blade fixing plate via two movable blades. The removal work was time consuming.

  In view of the above-mentioned problems of the prior art, there have been proposed mowing machines having a cutting blade structure in which the opening of the blade holder is directed toward the bottom side, etc., but these are all complicated in structure and have a large number of parts. It was a lot, and the manufacturing cost increased or the workability deteriorated. Therefore, there has been a demand for the realization of a reaper having a new cutting blade structure that eliminates the above-described problems of the prior art and does not increase the manufacturing cost by having a simple structure.

  The present invention has been made in view of the existence of the above-mentioned problems and the demands of the industry, and the purpose thereof is to prevent cutting scraps such as branches and leaves from collecting in the cutting blade unit or the like and to have a simple structure. It is providing the new cutting blade unit which does not cause the increase in manufacturing cost by this, and a reaper provided with such a cutting blade unit.

  The present invention will be described below. In addition, in order to make an understanding of this invention easy, the reference number of an accompanying drawing is attached in parenthesis writing, However, This invention is not limited to the form of illustration by it.

  The cutting blade unit (21) according to the present invention includes a motor (31) serving as a drive source, a housing (11a) that houses the motor (31), and a cutting blade unit (21) attached to the housing (11a). And a cutting blade unit (21) used in a reaper (10), which is fixed to the bottom of the housing (11a) and protrudes toward the front side of the housing (11a). A blade fixing plate (22) formed extending in the longitudinal direction, and fixed to the upper surface side of the blade fixing plate (22), and having a concave cross section and having the concave opening (23a) on the upper surface side. And a reciprocating linear motion along the longitudinal direction between the blade fixing plate (22) and the blade holder (23). A movable blade (21a, 21b) and a cover member (41) that can be slidably mounted along the longitudinal direction of the blade holder (23) so as to close the opening (23a) of the blade holder (23). And.

  In the cutting blade unit (21) according to the present invention, a stopper member (42) for preventing the cover member (41) from being detached is attached to the front end portion of the blade holder (23). Can be.

  Furthermore, in the cutting blade unit (21) according to the present invention, the cutting blade unit (21) is capable of slidingly mounting a chip receiver (45) for collecting cutting waste on the blade holder (23), When the chip receiver (45) is slidably mounted on the blade holder (23), the chip receiver (45) and the cover member are engaged with each other to engage the chip receiver (45) and the cover member (41). (41) may be formed with engaging portions (45a, 41c), respectively.

  The reaper (10) according to the present invention includes a motor (31) serving as a drive source, a housing (11a) that houses the motor (31), and the above-described cutting blade unit (21) attached to the housing (11a). ).

  According to the present invention, a cutting blade unit such as branches and leaves does not accumulate in the cutting blade unit or the like, and has a simple structure and does not increase the manufacturing cost. A reaper provided with a blade unit can be provided.

It is an external view which shows the upper surface of the hedge trimmer which concerns on this embodiment. It is an external view at the time of seeing the hedge trimmer concerning this embodiment from the right side. It is the figure which expanded the principal part among the vertical cross-section right side surfaces of the hedge trimmer which concerns on this embodiment. It is a left view of the cutting blade unit which concerns on this embodiment. It is a top view of the cutting blade unit which concerns on this embodiment. It is a figure which shows the AA cross section in FIG. It is a figure which shows the BB cross section in FIG. It is a figure which shows CC cross section in FIG. It is a figure for demonstrating the structure of the stopper member containing the 2nd engaging part which concerns on this embodiment, The fragmentary figure (a) in a figure has shown the detail of the D section in FIG. b) shows an EE cross section in the partial diagram (a). It is a figure for demonstrating the structure of the 4th engaging part which concerns on this embodiment, the fragmentary figure (a) in a figure has shown the detail of the F section in FIG. The GG cross section in figure (a) is shown.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments for carrying out the invention will be described with reference to the drawings. The following embodiments do not limit the invention according to each claim, and all combinations of features described in the embodiments are not necessarily essential to the solution means of the invention. .

  First, the configuration of the hedge trimmer 10 as a reaper according to the present embodiment will be described with reference to FIGS. Here, FIG. 1 is an external view showing the upper surface of the hedge trimmer according to the present embodiment, and FIG. 2 is an external view when the hedge trimmer according to the present embodiment is viewed from the right side. Moreover, FIG. 3 is the figure which expanded the principal part among the vertical cross-section right side surfaces of the hedge trimmer which concerns on this embodiment.

  In this specification, for convenience of explanation, as shown in FIGS. 1 and 2, the direction of the hedge trimmer 10 is defined as “front, back, right side, left side, top, bottom”. I will do it. That is, the right side in FIG. 1 is “front”, the left side is “back”, the upper side is “left side”, and the lower side is “right side”. Further, the right side in FIG. 2 is the “front”, the left side is the “back”, the upper side is the “upper surface”, and the lower side is the “bottom surface”.

  As shown in FIGS. 1 to 3, the hedge trimmer 10 according to the present embodiment is configured to include a housing 11 and a cutting blade unit 21 as a tool that protrudes and is attached to the front side of the housing 11. Yes.

  The housing 11 includes a motor housing 11a that houses a motor 31 that is a driving source of the cutting blade unit 21, and a handle housing 11b that is configured separately from the motor housing 11a and has a handle portion 12 that receives a grip from a user. Are combined. The motor housing 11a and the handle housing 11b are connected so that the handle housing 11b covers a part of the back side of the motor housing 11a, and an anti-vibration member (not shown) is connected to the connecting portion. Since it is installed, it is possible to prevent the vibration from the motor housing 11a including the motor 31 and the cutting blade unit 21 serving as a vibration source from being transmitted to the handle housing 11b having the handle portion 12 that receives gripping from the user as much as possible. Structure is adopted.

  Since the motor 31 installed in the motor housing 11a is arranged vertically, the motor shaft 32 provided in the motor 31 is also arranged so as to face the vertical direction. In order to convert the rotation of the motor shaft 32 facing in the vertical direction into a horizontal reciprocating linear motion in the cutting blade unit 21, a transmission portion 33 is installed at a position below the motor 31.

  The transmission unit 33 includes a gear 33 a that meshes with a pinion tooth surface 32 a cut by a motor shaft 32 of the motor 31, and a cam device that converts the rotation of the gear 33 a into a reciprocating linear motion of the cutting blade unit 21.

  The gear 33a is a large gear having more teeth than the pinion tooth surface 32a, and a cam shaft 33b of a cam device is inserted into the shaft hole via a bush 33c. The gear 33 a and the pinion tooth surface 32 a function as a reduction gear, and the gear 33 a rotates at a lower speed than the motor shaft 32 of the motor 31.

The cams 33d ₁ and 33d ₂ of the cam device are fixed to the bottom surface of the gear 33a with a stop pin 34 while being loosely fitted to the cam shaft 33b, and rotate integrally with the gear 33a. The cams 33d ₁ and 33d ₂ are specifically disk cams, and are fixed to the gear 33a so that the center axis thereof is deviated from the cam shaft 33b. The cams 33d ₁ and 33d ₂ are provided so as to correspond to two movable blades 21a and 21b, which will be described later, and are arranged so that their phases are shifted by 180 degrees. The cams 33d ₁ and 33d ₂ are provided according to the number of the movable blades 21a and 21b. For example, when there is one movable blade, only one cam is provided.

  The cam shaft 33 b of the cam device passes through the gear 33 a upward and is arranged in parallel with the motor shaft 32 of the motor 31. The cam shaft 33b is supported at a predetermined location such as a rib of the motor housing 11a through the bearing member 35 together with the motor shaft 32 of the motor 31 at the parallel aligned locations.

The bearing member 35 is a fixing member that spans between the cam shaft 33b and the motor 31, and is fixed in the motor housing 11a by being sandwiched by the two-part motor housing 11a. The bearing member 35 is generally formed of a metal such as an aluminum alloy, but may be formed of a synthetic resin or the like. The bearing member 35 is formed with a shaft hole 35 a into which the cam shaft 33 b is press-fitted and a pressing portion 35 b related to the ball bearing 36 that supports the motor shaft 32. As described above, the motor shaft 32 and the cam shaft 33b are held in parallel in the motor housing 11a via the bearing member 35 at a constant interval, so that the torque of the motor shaft 32 is applied to the cams 33d ₁ and 33d _2. Will be transmitted smoothly.

  On the other hand, the cutting blade unit 21 is installed so as to protrude toward the front side from the bottom surface of the motor housing 11a in a state where the blade fixing plate 22, the movable blades 21a and 21b, and the blade holder 23 overlap each other.

The blade fixing plate 22 is fixed to the bottom surface of the motor housing 11a, and the blade holder 23 is fixed to the upper side of the blade fixing plate 22 via a spacer 24 and a fixing screw 25. The movable blades 21 a and 21 b are inserted between the blade fixing plate 22 and the blade holder 23 and contact the spacer 24 through a long hole extending in the length direction of the cutting blade unit 21. Long holes 24a and 24b extending in the width direction of the respective blades are formed in the rear ends (back end portions) of the movable blades 21a and 21b, and the cams 33d ₁ and 33b ₁ of the cam device are provided in the long holes 24a and 24b. 33d ₂ is inserted. When the cams 33d ₁ and 33d ₂ rotate around the cam shaft 33b, the movable blades 21a and 21b are reciprocally linearly moved in opposite directions due to the sliding contact between the cams 33d ₁ and 33d ₂ and the long holes 24a and 24b. I do. The movable blades 21a and 21b that reciprocate linearly can trim, for example, hedge plants.

  The cutting blade unit 21 is replaced by removing the blade fixing plate 22 fixed to the bottom of the motor housing 11a from the motor housing 11a and replacing the entire cutting blade unit 21.

  Further, as described above, the handle housing 12 according to the present embodiment is formed with the handle portion 12 that receives a grip from the user. The handle portion 12 receives a pressing operation from the user. A trigger switch 13 that is a switch capable of operating the rotational drive of the motor 31 is provided.

  The trigger switch 13 is connected to a switch device 14 for turning on / off power to the motor 31. Therefore, when the trigger switch 13 receives a pressing operation from the user, the trigger switch 13 is pushed into the handle housing 11b, the switch device 14 is turned on, and power is supplied to the motor 31 that is a drive source. Become. When the pressing operation is stopped, the trigger switch 13 is returned to the original position, the switch device 14 is turned off, and the power supply to the motor 31 that is the drive source is stopped. The switch device 14 is provided with a lock-on button (not shown), and the user operates the lock-on button in a state where the trigger switch 13 is pushed into the handle housing 11b. Even if the pressing operation of the switch 13 is stopped, the trigger switch 13 is not returned to the original position, and the ON state of the switch device 14 is maintained. When the on-state is maintained by the operation of the lock-on button, when the user presses the trigger switch 13 again, the on-state maintenance by the lock-on button is released, and when the pressing operation is further stopped, the trigger switch 13 returns to the original position, and the switch device 14 is turned off.

  Now, the hedge trimmer 10 which concerns on this embodiment mentioned above has a significant structure in the cutting blade unit 21 mentioned above. Therefore, in addition to the reference drawings of FIGS. 4 to 10, a specific configuration of the cutting blade unit 21 according to the present embodiment will be described. Here, FIG. 4 is a left side view of the cutting blade unit according to the present embodiment, FIG. 5 is a top view of the cutting blade unit according to the present embodiment, and FIG. 6 is an A- in FIG. It is a figure which shows A cross section. 7 is a diagram showing a BB cross section in FIG. 6, and FIG. 8 is a diagram showing a CC cross section in FIG. Furthermore, FIG. 9 is a figure for demonstrating the structure of the stopper member containing the 2nd engaging part which concerns on this embodiment, and the fractional figure (a) in a figure shows the detail of the D section in FIG. The partial diagram (b) shows the EE cross section in the partial diagram (a). Furthermore, FIG. 10 is a figure for demonstrating the structure of the 4th engaging part which concerns on this embodiment, The fractional drawing (a) in a figure has shown the detail of the F section in FIG. The partial diagram (b) shows the GG cross section in the partial diagram (a).

  As described above, the cutting blade unit 21 according to the present embodiment protrudes from the bottom surface of the motor housing 11a toward the front side in a state where the blade fixing plate 22, the movable blades 21a and 21b, and the blade holder 23 overlap each other. It is installed as follows. In the cutting blade unit 21 according to the present embodiment, the blade fixing plate 22 fixed to the bottom of the motor housing 11a is removed from the motor housing 11a, and the cutting blade unit 21 shown in FIGS. 4 and 5 is in a single state. The unit parts can be exchanged and can be sold in a single state.

  The blade fixing plate 22 is a plate-like member that is fixed to the bottom surface of the motor housing 11a and extends in the longitudinal direction so as to protrude toward the front side of the motor housing 11a. It is a member that serves as an attachment reference when attached to the motor housing 11a. A blade holder 23 is fixed to the upper surface side of the blade fixing plate 22 via a spacer 24 and a fixing screw 25, and two movable blades 21a are provided between the blade fixing plate 22 and the blade holder 23. , 21b are inserted and installed (the configuration for driving these two movable blades 21a, 21b has been described above and is omitted here).

  As shown in more detail in FIGS. 7 and 8, the blade holder 23 is a long member that has a concave cross section and is installed with the concave opening 23 a facing the upper surface side. Inside the opening 23a of the blade holder 23, a pair of concave grooves 23b are formed on the left and right inner wall surfaces. The pair of concave grooves 23 b is formed over the entire length of the blade holder 23 in the longitudinal direction.

  On the other hand, on the upper surface side of the blade holder 23, a cover member 41 is installed along the longitudinal direction of the blade holder 23 so as to close the opening 23 a of the blade holder 23. The cover member 41 is formed with a pair of convex portions 41 b on the left and right side surfaces, and the pair of convex portions 41 b is formed over the entire length of the cover member 41 in the longitudinal direction. Then, the convex portion 41 b of the cover member 41 can be engaged with the concave groove 23 b formed in the blade holder 23. Therefore, in the present embodiment, the first engaging portion is formed by the concave groove 23b of the blade holder 23 and the convex portion 41b of the cover member 41, and when the cover member 41 is inserted from the end of the blade holder 23, the first engagement portion is formed. The cover member 41 can be slid onto the blade holder 23 by sliding it in a state where the concave groove 23b and the convex portion 41b, which are one engaging portion, are fitted together.

  Further, as shown in FIG. 5 and FIG. 6 and the like, a stopper member 42 for preventing the cover member 41 from being detached is attached to the front end portion of the blade holder 23. A more detailed configuration of the stopper member 42 is shown in FIG. The stopper member 42 of the present embodiment is a member that is fitted and installed at the front end portion of the blade holder 23, and a convex portion 42 c that protrudes toward the bottom surface side is formed at the distal end portion of the fitting side. . On the other hand, a locking hole 23c is formed at a position on the bottom surface side of the opening 23a that slightly enters inside from the front end of the blade holder 23. When the stopper member 42 is fitted into the front end of the blade holder 23, the convex portion 42c of the stopper member 42 is just fitted into the locking hole 23c. That is, the second engaging portion is formed by the convex portion 42 c of the stopper member 42 and the locking hole 23 c of the blade holder 23, and when the stopper member 42 is inserted into the front end portion of the blade holder 23, The convex part 42c which is a two engaging part, and the latching hole 23c will be in an engagement state, and the movement to the front side of the stopper member 42 is controlled.

  Further, the stopper member 42 of the present embodiment is fitted and installed in the blade holder 23 before the cover member 41 is slid onto the blade holder 23, and then the cover member 41 is attached by slide attachment. In this state, the movement of the cover member 41 to the front side is restricted by the stopper member 42 and the upward movement of the stopper member 42 is restricted by the cover member 41. As a result, the engagement state of the second engagement portion cannot be released and the stopper member 42 is reliably prevented from being lost. As a result, the cover member 41 is reliably prevented from coming off from the blade holder 23 to the front side. Is done. Incidentally, the end 41a of the cover member 41 on the side opposite to the stopper member, that is, the back side of the cover member 41 is the cutting blade unit in the state shown in FIG. By installing 21 in the motor housing 11a, it abuts on a member (not shown) on the motor housing 11a side and its movement is restricted. Therefore, the movement of the cover member 41 with respect to the blade holder 23 is reliably regulated by the stopper member 42 and a member (not shown) on the motor housing 11a side when the cutting blade unit 21 is assembled to the motor housing 11a. ing.

  As described above, the cutting blade unit 21 in which the opening 23a on the upper surface side of the blade holder 23 is closed by the cover member 41 can be further equipped with a chip receiver 45 for collecting cutting waste and the like. ing. The mounting mechanism will be specifically described with reference to FIGS. 7 and 8. A pair of concave grooves 23 d are formed on the left and right outer wall surfaces outside the blade holder 23. The pair of concave grooves 23 d is formed over the entire length of the blade holder 23 in the longitudinal direction.

  On the other hand, the chip receiver 45 is formed with a pair of convex portions 45 d with respect to the connection portion with the blade holder 23. The pair of convex portions 45 d are formed at two locations in the longitudinal direction of the chip receiver 45. The convex portion 45 d of the chip receiver 45 can be engaged with and fitted into a concave groove 23 d formed in the blade holder 23. Therefore, in the present embodiment, the third engaging portion is formed by the concave groove 23 d of the blade holder 23 and the convex portion 45 d of the chip receiver 45, and when the chip receiver 45 is inserted from the front end of the blade holder 23. In addition, the chip receiver 45 can be slid onto the blade holder 23 by using the concave groove 23d and the convex portion 45d, which are the third engaging portions.

  Furthermore, in the present embodiment, a mechanism for securely fixing the chip receiver 45 to the blade holder 23 side is provided. Such a mechanism will be described with reference to FIGS.

Engagement portions 45a for engaging with the cover member 41 are formed on the upper surfaces of the chip receiver 45 near the both ends on the front side and the back side (particularly depicted in detail in FIG. 10). The engaging portion 45a is provided with engagement claws 45a _1, a knob portion 45a ₂ to be connected to the engaging claws 45a _1, the opening 45a ₃ adjacent to the engagement claws 45a _1, the engaging claws 45a _1, knob It comprises a slit 45a ₄ provided in the longitudinal direction on both sides of the part 45a ₂ and the opening 45a ₃ . Therefore, when the user tries to lift the knob portion 45a ₂ to the upper surface side, the engagement claw 45a ₁ and the opening portion 45a ₃ can be moved to the upper surface side by the effect of the slit 45a ₄ .

On the other hand, on the upper surface of the cover member 41, convex 41c that can be fitted into the opening 45a ₃ mentioned above is formed. Therefore, the engaging portion 45a of the chip receiver 45 (in particular, the engaging claw 45a ₁ and the opening 45a ₃₎ and convex 41c of the cover member 41 functions as a fourth engaging portion, the chip receiver 45 is a blade holder 23 to when it is slid attached, a cover member 41 which is fixed and held to the blade holder 23, and the chip receiver 45, the engagement portion 45a (in particular, the engaging claw 45a ₁ and the opening 45a ₃₎ and convex 41c The fourth engaging portion is surely engaged.

In addition, in order to smoothly realize the engagement state between the chip receiver 45 and the cover member 41 and to maintain a reliable engagement state, the engagement claw 45a ₁ included in the engagement portion 45a has a tapered shape. Has been. By providing such a tapered shape, the chip receiver 45 can be easily slid onto the blade holder 23 side.

  The preferred embodiments of the present invention have been described above. As described above, in the present embodiment, the cutting blade unit 21 in which the opening 23 a on the upper surface side of the blade holder 23 is closed by the cover member 41 is realized. There is no problem of clogging.

  Further, the hedge trimmer 10 according to the present embodiment has a good design compared to the prior art and has a high design reaper (hedge trimmer 10) because the opening 23a on the upper surface side of the blade holder 23 is closed. ing.

  Furthermore, since the hedge trimmer 10 according to the present embodiment is configured based on the improvement of the shape of the existing parts such as the first engaging part to the fourth engaging part, the apparatus does not increase the number of constituent parts. The configuration is not complicated. In particular, the blade holder 23 according to the present embodiment has a shape such as the concave grooves 23b and 23d, but such a shape can be formed at low cost by extruding an aluminum bar. . Further, members such as the cover member 41 and the stopper member 42 can be manufactured using a material having good moldability such as resin or nylon. Therefore, it can be said that the hedge trimmer 10 according to the present embodiment is a reaping machine that eliminates the problems of the prior art without increasing the manufacturing cost compared to the prior art.

  As mentioned above, although preferred embodiment of this invention was described, the technical scope of this invention is not limited to the range as described in the said embodiment. Various modifications or improvements can be added to the embodiment.

  For example, with respect to various uneven engagement shapes employed in the first engagement portion to the fourth engagement portion, the arrangement relationship of the unevenness can be switched. Moreover, about various uneven | corrugated engagement shape, it is not restricted to the shape shown in figure, A deformation | transformation form is employable in the range which exhibits the same effect.

  In the above-described embodiment, the case where the cover member 41 and the stopper member 42 are configured separately has been described as an example. However, the cover member and the stopper member according to the present invention are integrally molded as one member. It may be configured.

  It is apparent from the description of the scope of claims that embodiments with such changes or improvements can be included in the technical scope of the present invention.

DESCRIPTION OF SYMBOLS 10 Hedge trimmer, 11 Housing, 11a Motor housing, 11b Handle housing, 12 Handle part, 13 Trigger switch, 14 Switch device, 21 Cutting blade unit, 21a, 21b Movable blade, 22 Blade fixed plate, 23 Blade holder, 23a Upper surface side Opening, 23b Groove, 23c Locking hole, 23d Groove, 24 Spacer, 24a, 24b Long hole, 25 Fixing screw, 31 Motor, 32 Output shaft, 32a Pinion tooth surface, 33 Transmission part, 33a Gear, 33b Cam shaft , 33c _bush, 33d 1, 33d ₂ cam, 34 stop pin, 35 a bearing member, 35a shaft hole, 35b holding portion, 36 ball bearings, 41 cover member, the ends of 41a back side, 41b convex portion, 41c convex shape, 42 Stopper member, 42c Convex part, 45 Tip receipt Bar, 45a engaging part, 45a ₁ engaging claw, 45a ₂ knob part, 45a ₃ opening part, 45a ₄ slit, 45d convex part.

Claims (4)

A motor as a drive source;
A housing for housing the motor;
A cutting blade unit attached to the housing;
A cutting blade unit used for a reaping machine comprising:
A blade fixing plate fixed to the bottom of the housing and extending in the longitudinal direction so as to protrude toward the front side of the housing;
A blade holder that is a long member that is fixed on the upper surface side of the blade fixing plate and has a concave cross section and is installed with the concave opening facing the upper surface side,
A movable blade which is freely reciprocated linearly along the longitudinal direction between the blade fixing plate and the blade holder;
A cover member slidably mounted along the longitudinal direction of the blade holder so as to close the opening of the blade holder;
A cutting blade unit comprising: The cutting blade unit according to claim 1,
A cutting blade unit, wherein a stopper member for preventing the cover member from coming off is attached to an end portion on the front side of the blade holder. In the cutting blade unit according to claim 1 or 2,
The cutting blade unit can be slidably mounted on the blade holder with a chip receiver for collecting cutting waste,
When the chip receiver is slid and mounted on the blade holder, the chip receiver and the cover member are each formed with an engaging portion in order to engage the chip receiver and the cover member. The cutting blade unit that features. A motor as a drive source;
A housing for housing the motor;
The cutting blade unit according to any one of claims 1 to 3, which is attached to the housing;
A reaper characterized by comprising:

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