JP2019037184A - Hand-held attachment-type thatching device - Google Patents

Abstract

To provide a hand-held attachment-type thatching device that has good workability and operability.SOLUTION: This hand-held attachment-type thatching device 10 includes a body part 11 for storing a motor 12 being a driving source, and a thatching unit 21 having a thatching blade 22 operated by receiving the driving force from the motor 12. The body part 11 has a driving gear 14a rotated by the driving force of the motor 12. The thatching unit 21 has a drive transmission mechanism 24 for transmitting the rotational driving force of the driving gear 14a to the thatching blade 22, and is configured so as to attach and detach the thatching unit 21 to/from the body part 11 in the drive connection between the driving gear 14a arranged in the body part 11 and the drive transmission mechanism 24 arranged in the thatching unit 21.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a hand-held attachment type etching apparatus.

  In order to remove the satch (with turf withered roots, stems and leaves in the lawn) from the lawn, a saturating blade is used. For example, Patent Document 1 below discloses a hand-held lawn mower. In this lawn mower, both the lawn mowing and thatch collection operations can be carried out by rearranging the reel blade for mowing the lawn to a thatching blade for collecting thatchatch.

Japanese Patent No. 3525373

  However, in the conventional combined grass type lawn mower represented by the apparatus disclosed in Patent Document 1 listed above, after the reel blade is once removed, if the slitting blade is not attached instead, the etching operation can be performed. The configuration is not possible. In such a configuration, there is a problem that the blade reassembly work is complicated and the operability is very poor. In addition, the hand-held type of both-satching lawn mower disclosed in Patent Document 1 has a problem that due to its structure, the work in a narrow working range or in a region such as a wall cannot be sufficiently collected.

  Furthermore, an attachment-type etching device that can be used by hand has never existed in the first place, and there has been a demand for a etching device with good workability and operability.

  The present invention has been made in view of various problems existing in the above-described prior art, and an object of the present invention is to provide a hand-held attachment type etching apparatus having good workability and operability.

  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.

  A hand-held attachment type etching device (10) according to the present invention comprises a main body (11) that houses a motor (12) as a driving source, and a cutting blade that operates in response to a driving force from the motor (12). 22), and the main body (11) has a drive gear (14a) that is rotated by the driving force of the motor (12), and the hatching unit (21) A drive transmission mechanism (24) for transmitting the rotational driving force of the drive gear (14a) to the thatching blade (22), and the drive gear (14a) disposed in the main body (11); In the drive connection part with the said drive transmission mechanism (24) arrange | positioned at a hatching unit (21), the said etching unit (21) is attached or detached with respect to the said main-body part (11). It is characterized in being configured urchin.

  In the hand-held attachment type etching device (10) according to the present invention, the drive transmission mechanism (24) is arranged around the rotation axis in a direction orthogonal to the rotation axis direction of the rotation driving force of the drive gear (14a). The hatching blade (22) can be driven to rotate.

  Further, in the handheld attachment type etching device (10) according to the present invention, the drive transmission mechanism (24) is arranged in a substantially vertical direction when the handheld attachment type etching device (10) is placed on a horizontal plane. The rotational driving force around the vertical axis transmitted from the drive gear (14a) can be transmitted so that the thatching blade (22) is rotationally driven around the horizontal axis.

  Furthermore, in the hand-held attachment type etching device (10) according to the present invention, the drive transmission mechanism (24) rotationally drives the rotational driving force around the vertical axis of the drive gear (14a) around the horizontal axis. A gear train (24b, 24c, 24e) to be transmitted to the drive pulley (25), a driven pulley (26) fixedly installed at one end of the rotary shaft (22a) of the rotating blade (22), A transmission belt (27) stretched between the drive pulley (25) and the driven pulley (26) may be included.

  Still further, in the hand-held attachment type etching device (10) according to the present invention, it is preferable that a sled body (32) is disposed on the counter drive connecting portion side of the hatching unit (21).

  Still further, in the handheld attachment type etching device (10) according to the present invention, the sled body (32) is a protrusion in which the etching blade (22) projects from the bottom surface of the bottom plate (32a) of the sled body (32). A position adjusting mechanism (33, 34, 35) that can adjust the amount can be provided.

  Moreover, in the hand-held attachment type etching device (10) according to the present invention, the rear region of the saw blade (22), which is the upper region of the bottom plate (32a) of the sled body (32), can be ) Can be configured as a storage area for the hatches collected.

  Furthermore, in the hand-held attachment type etching device (10) according to the present invention, it is preferable that the rear wall defining the rear portion of the storage area is configured as an openable / closable lid (32b).

  Furthermore, in the hand-held attachment type etching device (10) according to the present invention, when the state in which the hand-held attachment type etching device (10) is placed on a horizontal surface is viewed in a plan view, the main body (11) Can be configured to be positioned in the center in the left-right direction of the thatching unit (21).

  Furthermore, in the hand-held attachment type etching device (10) according to the present invention, the main body (11) is provided with a gripping part (11b) for receiving gripping from an operator, and the gripping part (11b) It is possible to install an extension handle (71) having a long operating rod (72).

  According to the present invention, it is possible to provide a hand-held attachment type etching device having good workability and operability.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an external view showing an overall configuration of a hand-held attachment type etching apparatus according to the present embodiment, and particularly shows a top view. 1 is an external view showing an overall configuration of a hand-held attachment type etching device according to the present embodiment, and particularly shows a right side view. FIG. 1 is an external view showing an overall configuration of a hand-held attachment type etching apparatus according to the present embodiment, and particularly shows a left side view. FIG. BRIEF DESCRIPTION OF THE DRAWINGS It is an external view which showed the whole structure of the hand-held attachment type etching apparatus which concerns on this embodiment, and has shown the perspective view especially seen from the front right diagonal upper side. BRIEF DESCRIPTION OF THE DRAWINGS It is an external view which showed the whole structure of the hand-held attachment type etching apparatus which concerns on this embodiment, and the perspective view at the time of seeing from the front right diagonal lower side is shown especially. It is a figure which shows the state by which the hand-held attachment type etching apparatus which concerns on this embodiment shown in FIG. 4 was isolate | separated into the main-body part and the etching unit. It is a figure which shows the state by which the hand-held attachment type etching apparatus which concerns on this embodiment shown in FIG. 5 was isolate | separated into the main-body part and the hatching unit. It is an external view for demonstrating the single-piece | unit structure of the stitching unit which comprises the hand-held attachment type etching apparatus which concerns on this embodiment, and has shown the top view especially. It is an external view for demonstrating the single-piece | unit structure of the hatching unit which comprises the hand-held attachment type etching apparatus which concerns on this embodiment, and has shown the bottom view especially. It is an external view for demonstrating the single-piece | unit structure of the etching unit which comprises the hand-held attachment type etching apparatus which concerns on this embodiment, and has shown the right view especially. It is an external view for demonstrating the single-piece | unit structure of the etching unit which comprises the hand-held attachment type etching apparatus which concerns on this embodiment, and has shown the left view especially. It is an external view for demonstrating the single-piece | unit structure of the etching unit which comprises the hand-held attachment type etching apparatus which concerns on this embodiment, and has shown the front view especially. It is an external view for demonstrating the single-piece | unit structure of the stitching unit which comprises the hand-held attachment type etching apparatus which concerns on this embodiment, and has shown the back view especially. It is a partial longitudinal cross-section right side view of the hand-held attachment type etching apparatus according to the present embodiment. The right half of the drawing is a cross-sectional view showing a cross section of symbol A in FIG. 14, and the left half of the drawing is a cross sectional view showing a cross section of reference sign B in FIG. It is sectional drawing which shows the code | symbol CC cross section in FIG. It is sectional drawing which shows the code | symbol D cross section in FIG. It is a schematic sectional drawing for demonstrating the principal part structure of the drive transmission mechanism with which the hand-held attachment type etching apparatus which concerns on this embodiment is provided. It is sectional drawing which shows the code | symbol E cross section in FIG. It is an external view for demonstrating the structure of the hatching blade with which the hand-held attachment type etching apparatus which concerns on this embodiment is provided, Comprising: Illustration of a rotating shaft is abbreviate | omitted. It is a partial exploded view for demonstrating the principal part structure of the main-body part which comprises the hand-held attachment type etching apparatus which concerns on this embodiment, and has shown the especially perspective view when it sees from back right diagonally upward. It is a fragmentary exploded view for demonstrating the principal part structure of the main-body part which comprises the hand-held attachment type etching apparatus which concerns on this embodiment, and has shown the perspective view especially seen from the front right diagonal lower side. It is a figure which shows the various form example which the attachment-type attachment type | mold etching apparatus for handheld which concerns on this invention can take.

  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. .

  The hand-held attachment type etching apparatus 10 according to the present embodiment will be described with reference to FIGS. Here, FIG. 1 to FIG. 5 are external views showing the overall configuration of the hand-held attachment type etching device according to the present embodiment. In particular, FIG. 1 shows a top view and FIG. 2 shows a right side view. 3 shows a left side view, FIG. 4 shows a perspective view when viewed from the front right diagonal upper side, and FIG. 5 shows a perspective view when viewed from the front right diagonal lower side. FIG. 6 is a view showing a state in which the hand-held attachment type etching apparatus according to the present embodiment shown in FIG. 4 is separated into a main body and a hatching unit, and FIG. 7 is a view showing the book shown in FIG. It is a figure which shows the state by which the hand-held attachment type etching apparatus which concerns on embodiment was isolate | separated into the main-body part and the hatching unit. Further, FIGS. 8 to 13 are external views for explaining a single unit configuration of the etching unit constituting the hand-held attachment type etching apparatus according to the present embodiment. In particular, FIG. 8 shows a top view, and FIG. Shows a bottom view, FIG. 10 shows a right side view, FIG. 11 shows a left side view, FIG. 12 shows a front view, and FIG. 13 shows a rear view. Furthermore, FIG. 14 is a partial vertical cross-sectional right side view of the hand-held attachment type etching apparatus according to the present embodiment. Further, FIG. 15 is a cross-sectional view in which the right half of the drawing shows the section A in FIG. 14, and the left half of the drawing is a cross-sectional view showing the section B in FIG. 16 is a cross-sectional view showing a cross section taken along the line CC in FIG. 14, and FIG. 17 is a cross-sectional view showing a cross section taken along the line D in FIG. FIG. 18 is a schematic cross-sectional view for explaining a main configuration of a drive transmission mechanism included in the hand-held attachment type etching apparatus according to the present embodiment, and FIG. 19 is a cross-sectional view showing a cross section E of FIG. FIG. Furthermore, FIG. 20 is an external view for explaining the configuration of a hatching blade provided in the hand-held attachment type etching apparatus according to this embodiment, and the illustration of the rotating shaft is omitted. FIG. 21 and FIG. 22 are partial exploded views for explaining a main part configuration of the main body part constituting the hand-held attachment type etching device according to the present embodiment. In particular, FIG. FIG. 22 shows a perspective view when viewed from the front diagonally lower side.

  In the present embodiment, for convenience of explanation, the direction of the hand-held attachment type etching device 10 is defined as shown in FIGS. 1 to 3 and FIG. That is, based on the direction when viewed from the operator when the operator grips the hand-held attachment type etching device 10 according to the present embodiment in a state of being placed on a horizontal plane, “front, rear, upper, lower, "Left, right" has been determined.

  As shown in FIG. 14, a hand-held attachment type etching device 10 according to the present embodiment includes a main body 11 that houses a motor 12 that is a driving source, and a etching blade that operates by receiving a driving force from the motor 12. The main body 11 and the etching unit 21 are configured to be detachable so as to be separable and connectable.

  As shown in detail in FIGS. 1 to 7 and 14, the outer shape of the main body 11 includes a front housing 11 a that houses the motor 12 and an upper housing that functions as a grip that receives grip from the operator. It comprises a lower housing part 11c, which is a part for attaching and detaching the switching unit 21, and a rear housing part 11d on which an electric cord 15 for supplying electric power from an external power source is installed. The upper housing part 11b is provided with a trigger switch 13 for operating the motor 12 installed in the front housing part 11a, and an operator turns the trigger switch 13 on and off. The motor 12 is started / stopped. Further, the upper housing part 11b as a gripping part extends in the front-rear direction from the upper central part of the main body part 11 toward the rear, and the upper housing part 11b as the gripping part is a hand-held attachment type hatching. In the side view of the apparatus 10, the apparatus 10 has a morphological feature that the apparatus 10 is disposed above the etching unit 21.

  The motor 12 has a motor shaft 14 whose axial direction is directed in the vertical direction. A driving gear 14 a is formed at the shaft tip portion on the lower side of the motor shaft 14 of the motor 12. As shown in FIGS. 7 and 14, the drive gear 14 a is provided so as to protrude downward from the lower surface side of the main body 11. That is, the portion from which the drive gear 14 a protrudes corresponds to a drive connecting portion that is a detachable portion of the main body portion 11 with respect to the etching unit 21, and when the etching unit 21 is attached to the main body portion 11, the main body portion 11. The drive gear 14a protruding from the inside is configured to be inserted into the inside of the hatching unit 21 (see FIG. 14 and the like).

  The drive gear 14a formed at the shaft tip of the motor shaft 14 is configured as a helical gear having a helix angle. The twisting direction of the drive gear 14a according to the present embodiment is right-handed, and the drive gear 14a is configured to rotate clockwise when the handheld attachment type switching device 10 is viewed from the upper surface side. ing.

  On the other hand, the hatching unit 21 has a drive transmission mechanism 24 at a drive connection portion with the drive gear 14 a of the main body 11, and can exhibit a function of transmitting the rotational drive force from the motor 12 to the hatching blade 22. It is like that. The drive transmission mechanism 24 according to the present embodiment will be described with reference to FIGS. 14 to 20. The drive transmission mechanism 24 included in the hatching unit 21 has a vertical axis disposed in front of the motor shaft 14. The first shaft 24a having the first shaft 24a is fixedly installed on the upper side of the first shaft 24a, and meshes with the drive gear 14a formed at the lower shaft tip of the motor shaft 14 to rotate around the first shaft 24a. A first gear 24b and a second gear configured as a face gear that rotates integrally with the first gear 24b by being fixedly installed below the first gear 24b on the first shaft 24a and has a tooth portion on the upper surface side. The gear 24c meshes with the second gear 24c on the left side of the first shaft 24a (the right side in FIG. 16 and FIG. 18), and in front of and in the vertical direction of the first shaft 24a. It is configured to include a third gear 24e that rotates the left end side is fixedly installed in the second shaft 24d having a lateral axis that is positioned between the first gear 24b and the second gear 24c.

  As shown in more detail in FIGS. 16 and 18, a drive pulley 25 is fixedly installed on the right end side of the second shaft 24d. On the other hand, on the front side of the second shaft 24d, there is disposed a thatching blade 22 having a rotation axis parallel to the horizontal axis of the second shaft 24d. The thatching blade 22 is provided with a rotating shaft 22 a that protrudes in both the left and right directions, and the two left and right rotating shafts 22 a are supported by bearings 23. Therefore, the thatching blade 22 is comprised so that it can be rotationally driven centering | focusing on the left-right direction axis line. A driven pulley 26 is fixedly installed on the right rotating shaft 22a of the thatching blade 22. Further, a transmission belt 27 is stretched between the driving pulley 25 and the driven pulley 26 described above. Accordingly, the rotational driving force from the motor 12 is generated by the first gear 24b meshing with the driving gear 14a formed at the lower shaft tip of the motor shaft 14, the second gear 24c rotating integrally with the first gear 24b, The driven pulley is transmitted to the drive pulley 25 through a gear group constituting the drive transmission mechanism 24 such as the third gear 24e meshing with the second gear 24c, and is further stretched between the drive pulley 25 and the driven pulley 26. By rotating the drive 26, the driven blade 26 is finally configured to be driven to rotate.

  When the configuration of the above-described drive transmission mechanism 24 is arranged, as shown in FIGS. 16 and 18, the drive transmission mechanism 24 according to the present embodiment is orthogonal to the rotational axis direction of the rotational driving force of the drive gear 14 a. In particular, the driving transmission mechanism 24 according to the present embodiment is configured so that the hand-held attachment type etching device 10 is placed on a horizontal plane. It is characterized in that the rotational driving force around the vertical axis transmitted from the drive gear 14a arranged in a substantially vertical direction when being placed is transmitted so that the hatching blade 22 is rotationally driven around the horizontal axis. Is. Such a configuration contributes to realizing the drive transmission mechanism 24 in a compact manner, and the hand-held attachment type etching device 10 according to the present embodiment is a thatch device excellent in operability and workability.

  In the present embodiment, the driving gear 14a is configured to mesh suitably with the first gear 24b when the etching unit 21 is attached to the main body 11. That is, the first gear 24b is configured as a left-twisted helical gear having the same helix angle as the drive gear 14a. Further, when the hand-held attachment type etching device 10 is viewed from the upper surface side, when the drive gear 14a rotates clockwise, the first gear 24b rotates counterclockwise, and the direction of rotation is indicated by an arrow in FIG. As shown in the figure, the saturing blade 22 is finally configured such that the upper side moves forward and the lower side moves rearward.

  Next, in addition to the reference drawings of FIGS. 8 to 13, a further configuration of the thatching unit 21 according to the present embodiment will be described. As shown in FIGS. 8 to 13, the etching unit 21 according to the present embodiment includes a connecting body 31 on the drive connecting portion side which is a member connected to the main body portion 11, and a reaction body on the lower side of the connecting body 31. It is comprised with the sled body 32 installed in the drive connection part side.

  The coupling body 31 that constitutes the drive coupling portion side that is the upper side of the switching unit 21 functions as a cover member that covers each member that constitutes the drive transmission mechanism 24 described above. A mechanism for connecting to the main body 11 is installed on the upper surface of the connecting body 31, details of which will be described later. The connecting body 31 is configured to protect the drive pulley 25, the driven pulley 26, and the transmission belt 27 stretched between the pulleys 25, 26, and to cover the top, bottom, left, and right sides and the front surface of the thatching blade 22. Has been.

  On the other hand, the sled body 32 constituting the anti-drive connecting portion side, which is the lower side of the switching unit 21, is a box-shaped member provided with a bottom plate 32a covering almost the entire lower surface side of the connecting body 31, and this bottom plate 32a. It is configured so that it can be recovered smoothly by operating it while sliding on the grass. Further, the upper region of the bottom plate 32a of the sled body 32 and the rear region of the hatching blade 22 is configured as a storage region for the hatch collected by the hatching blade 22, and the upper side moves forward and the lower side is The sled body 32 has an outer shape as a box-shaped member that is larger than the shape of the main body 11 so that the catch recovered by the hatching blade 22 moving toward the rear can be reliably recovered in the storage region. It has.

  Further, the sled body 32 according to the present embodiment is provided with a position adjusting mechanism for adjusting the position of the sled body 32 with respect to the connecting body 31. The position adjusting mechanism according to the present embodiment includes a connection shaft 33 that supports the sled body 32 in a tiltable state with respect to the coupling body 31, a long hole portion 34 formed in the sled body 32, and the long hole portion 34. And a fixing screw 35 that can be screwed and fixed to the coupling body 31 in a state of passing through. The connecting shaft 33 is installed at a substantially central position in the front-rear direction of the connecting body 31 and the sled body 32, and the elongated hole 34 and the fixing screw 35 are installed at a rear position in the front-rear direction of the connecting body 31 and the sled body 32. Has been. Therefore, the sled body 32 is provided so as to be tiltable with respect to the connecting body 31 with the connection shaft 33 as the tilting center, and can be tilted within a range where the hole portion of the elongated hole portion 34 is opened. In addition, when the fixing screw 35 is screwed into the elongated hole 34 in a state where the sled body 32 is tilted at an arbitrary angle with respect to the connecting body 31, the warping body 32 is fixed to the connecting body 31. By using the position adjustment mechanism having such a configuration, it is possible to adjust the relative position in the forward direction of the sled body 32 with respect to the coupling body 31. That is, by adjusting the fixing position of the sled body 32 with respect to the connecting body 31 using the position adjusting mechanism according to the present embodiment, the amount of protrusion that the sagging blade 22 projects from the bottom surface of the bottom plate 32a of the sled body 32 is adjusted. Is possible.

  Furthermore, in the sled body 32 according to the present embodiment, the rear wall that defines the rear portion of the storage area is configured as an openable / closable lid 32b. The opening / closing lid 32b is installed on the upper part on the rear side of the sled body 32 via a hinge 32c so that it can be freely opened and closed. In addition, the opening / closing lid 32b is configured such that when the hand-held attachment type switching apparatus 10 is placed on a horizontal surface, the upper side of the opening / closing lid 32b is in a position in which the upper side of the opening / closing lid 32b is tilted forward with respect to the lower side. . Therefore, in a state where the operator uses the hand-held attachment type switching device 10 according to the present embodiment while moving horizontally, the open / close lid 32b is closed behind the sled body 32. Then, when the satch is collected in the storage area formed by the sled body 32 and the satch is to be discarded, the operator tilts the front side of the hand-held attachment type satching device 10 according to the present embodiment upward. Thus, the lower side of the opening / closing lid 32b is opened by the action of gravity, and the thatch is discharged out of the device from this open position, so that the discarding operation can be easily performed.

  In addition, about the hatching unit 21 which concerns on this embodiment comprised by the warp body 32 and the coupling body 31 mentioned above, as shown in FIG. 8, the state which mounted the attachment type | mold attachment type | molding apparatus 10 on the horizontal surface is shown in plane. When viewed from the top (viewed from above), the main body 11 is configured to be positioned in the center in the left-right direction of the hatching unit 21. That is, the hand-held attachment type etching device 10 according to the present embodiment has a device configuration with good operability in terms of weight balance.

  In the above, the characteristic structure with which the hand-held attachment type etching apparatus 10 which concerns on this embodiment is provided was demonstrated. As described above, the hand-held attachment type etching device 10 according to the present embodiment includes a main body at the drive connecting portion between the drive gear 14 a disposed in the main body 11 and the drive transmission mechanism 24 disposed in the hatching unit 21. It is comprised so that attachment / detachment of the etching unit 21 with respect to the part 11 may be performed. Therefore, next, in the hand-held attachment type etching apparatus 10 according to the present embodiment, a configuration for suitably attaching the etching unit 21 to the main body 11 will be described with reference to FIGS. 6, 8, 10, 11, and 11. This will be described with reference to FIGS.

  The hand-held attachment type etching device 10 according to the present embodiment is configured such that the mounting of the etching unit 21 to the main body 11 is performed in two steps. This two-step procedure is executed in a temporarily connected state and a firmly connected state.

  First, a configuration for realizing a temporary connection state will be described. As shown in FIG. 6, FIG. 8, FIG. 10 and FIG. 11, two engaging arms 62 are formed at the connecting portion with the main body 11 in the switching unit 21 according to the present embodiment. As shown in more detail in FIGS. 10 and 11, the two engagement arms 62 are members arranged in a state in which a substantially inverted L-shaped member is erected upward in a side view. The upper portions of the two engagement arms 62 have a shape having a slope, and a depression shape is formed below the slope.

  On the other hand, an engagement member 52 shown in FIGS. 21 and 22 is installed in the main body 11 at a position corresponding to the two engagement arms 62 formed in the above-described thatching unit 21. A total of two engaging members 52 are disposed at the left and right positions of the main body 11. Further, the two engaging members 52 are installed in the main body 11 via the coil spring 53, and are always pressed toward the rear of the main body 11 by the action of the elastic force of the coil spring 53. It is configured as follows. Further, each of the two engaging members 52 is provided with a shaft-like portion at a position where the two engaging arms 62 provided in the hatching unit 21 come into contact with the main body 11 when the hatching unit 21 is mounted. An operation knob 52b having a non-slip shape having a concavo-convex shape is formed at a position exposed from the left and right side surfaces of the main body portion 11.

  Therefore, when the thatching unit 21 is to be attached to the main body portion 11, the shaft-like portion 52 a formed on the engaging member 52 that is first installed at the left and right positions of the main body portion 11 is placed on the upper portion of the engaging arm 62. However, due to the action of the inclined surface formed on the upper portion of the engagement arm 62, a force against the elastic force of the coil spring 53 acts on the shaft-like portion 52 a, and the engagement member 52 acts as the main body portion 11. The movement along the upper slope of the engagement arm 62 is performed while moving toward the front. When the pressing unit 21 is further pushed into the main body 11, the shaft-like portion 52 a gets over the upper slope of the engagement arm 62 and fits into a hollow shape formed below the slope. At this time, the shaft-like portion 52 a is pushed toward the hollow shape so as to be held in the hollow shape of the engagement arm 62 by the elastic force of the coil spring 53. In this way, the two engaging members 52 and the two engaging arms 62 are engaged, and a temporarily connected state between the main body 11 and the switching unit 21 is realized. The temporary connection state is changed from the main body 11 to the switching unit when shifting to a strongly connected state, which will be described later, and conversely, when shifting from the firmly connected state to the temporarily connected state. It also functions as a mechanism for suitably preventing a problem that 21 falls. That is, in this embodiment, the engaging member 52 installed in the main body 11 and the engaging arm 62 formed in the thatching unit 21 are configured to function as a fall prevention mechanism of the present invention.

  Next, in the present embodiment, a mechanism for achieving the state where the mounting of the etching unit 21 to the main body 11 is firmly connected will be described. As shown in FIGS. 21 and 22, the hand-held attachment type switching apparatus 10 according to the present embodiment has an operation unit that can be operated from the gripping space S side with respect to the main body unit 11. Is a member configured as a rotary operation member 54 capable of rotating at a predetermined angle.

  The rotary operation member 54 is provided with a locking member 56 disposed so as to be slidable. As shown in more detail in FIGS. 21 and 22, the locking member 56 is configured as a plate-like member, and is formed with locking protrusions 56a as two locking means in the front. In addition, parallel plate portions 56b as two locking means are formed on the left and right sides of the opening that is greatly opened in the center of the plate, and a hole 56c as one locking means is formed at a position behind the plate. Has been. That is, five locking means are formed in the locking member 56 according to the present embodiment.

  In addition, a connection hole 56d for connecting to the pin member 54a of the rotary operation member 54 is formed at the rear position of the locking member 56 having a plate shape and on the left side of the hole portion 56c. When the rotary operation member 54 is rotated at a predetermined angle, the locking member 56 that receives the moving force from the pin member 54a of the rotary operation member 54 through the connection hole 56d slides in the front-rear direction. Is possible. It should be noted that four guide-shaped portions 56e for enabling smooth sliding movement are formed at the left and right front and rear positions of the locking member 56 having a plate shape. And since these four guide shape parts 56e follow the guide surface formed in the inside of the lower housing part 11c, the locking member 56 can perform a smooth slide movement in the front-back direction.

  On the other hand, the locking unit 21 is formed with a locking portion for locking the plate-shaped locking member 56. The specific shape of the locking portion according to the present embodiment is, for example, FIG. And shown in FIG. That is, the latching unit 21 has two locking recesses 63a formed at positions corresponding to the two locking protrusions 56a formed in front of the plate-shaped locking member 56. Two groove portions 63b are formed at positions corresponding to the two parallel flat plate portions 56b formed on the left and right of the central opening of the locking member 56 (see the position of the reference numeral 63b in FIG. 6). One protrusion 63c is formed at a position corresponding to one hole 56c formed at the rear of the locking member 56 having a shape.

  The locking portion according to this embodiment formed as two locking recesses 63a, two groove portions 63b, and one protrusion 63c is integrated with a gear box that houses the drive transmission mechanism 24 such as the first gear 24b. Further, these members are made of an aluminum alloy in order to increase rigidity. Then, the two locking projections 56a are inserted into and locked with respect to the two locking recesses 63a, so that it is preferable to prevent the thatching unit 21 from opening in the vertical direction with respect to the main body portion 11. it can. Moreover, since each of the two parallel flat plate portions 56b is inserted into the two groove portions 63b, it exhibits a function of preventing the etching unit 21 from moving in the left-right direction with respect to the main body portion 11. It becomes. Further, the hole portion 56c of the locking member 56 formed in a plate shape is fitted into the projection portion 63c, so that it is possible to suitably prevent the thatching unit 21 from opening in the vertical direction with respect to the main body portion 11. To work.

  As described above, in the hand-held attachment type etching device 10 according to the present embodiment, the locking member 56 is slid in the front-rear direction by rotating the rotary operation member 54 at a predetermined angle. Locking means (two locking projections 56a, two parallel flat plate portions 56b and one hole 56c) and five locking portions (two locking recesses 63a, two grooves 63b and one protrusion 63c) It is possible to switch between the locked state and the unlocked state.

  In the above, the structure for making the connection state of the main-body part 11 and the hatching unit 21 with which the hand-held attachment type etching apparatus 10 which concerns on this embodiment is provided was demonstrated. The hand-held attachment type etching device 10 according to the present embodiment is provided with the various characteristic configurations described above, and receives the driving force from the motor unit 12 and the main body 11 that houses the motor 12 that is the driving source. It is possible to realize for the first time a hand-held attachment type etching device 10 that is configured to be detachable from a stitching unit 21 that has an operating satining blade 22 and that is used in the hand-held attachment type etching device 10. It has become.

  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, in the above-described embodiment, the gripping portion that receives gripping from the operator is configured by the upper housing portion 11b that extends in the front-rear direction from the upper central portion of the main body portion 11 toward the rear. It was. However, the gripping part according to the present invention is not limited to the above-described embodiment. For example, as shown in FIG. 23, with respect to the upper housing part 11b as a gripping part provided in the main body part 11, By installing the extension handle 71 having a long operation rod 72, the extension handle 71 can be configured as a gripping portion. FIG. 23 is a diagram showing various forms that can be taken by the hand-held attachment type etching apparatus according to the present invention. Such a form in which the extension handle 71 is installed is also included in the hand-held attachment type etching apparatus according to the present invention.

  Further, for example, in the above-described embodiment, the technique for providing the hand-held attachment type etching device 10 in which the main body portion 11 and the etching unit 21 are configured to be detachable is shown, but the scope of the present invention is not limited to this. While including the single-piece | unit structure of the hatching unit 21 used for the hand-held attachment type | mold etching apparatus 10 mentioned above, the non-attachment type | mold etching apparatus provided with the structure similar to the hand-held attachment type | mold etching apparatus 10 mentioned above can also be included.

  Further, for example, in the above-described embodiment, the drive transmission mechanism 24 uses the drive pulley 25, the driven pulley 26, and the transmission belt 27 stretched between the pulleys 25, 26 so that the rotational driving force is transmitted. However, the scope of the present invention is not limited to this. The drive transmission mechanism according to the present invention may be configured such that the rotational driving force is transmitted only by the gear group instead of the drive pulley 25, the driven pulley 26, and the transmission belt 27.

  Further, for example, in the above-described embodiment, the drive gear 14a is formed at the shaft tip portion on the lower side of the motor shaft 14, but the scope of the present invention is not limited to this. The drive gear according to the present invention is configured as a separate member from the motor shaft 14, and can also be configured as a gear that is driven and connected to the motor 12 to rotate.

  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 Hand-held attachment type etching apparatus, 11 Main body part, 11a Front housing part, 11b Upper housing part, 11c Lower housing part, 11d Rear housing part, 12 Motor, 13 Trigger switch, 14 Motor shaft, 14a Drive gear, 15 Electric cord , 21 Satching unit, 22 Satching blade, 22a Rotating shaft, 23 Bearing, 24 Drive transmission mechanism, 24a 1st shaft, 24b 1st gear, 24c 2nd gear, 24d 2nd shaft, 24e 3rd gear, 25 Drive pulley, 26 driven pulley, 27 transmission belt, 31 connecting body, 32 sled body, 32a bottom plate, 32b open / close lid, 32c hinge, 33 connecting shaft, 34 oblong hole part, 35 fixing screw, 52 engaging member, 52a shaft-like part, 52b Operation knob, 53 coil spring, 54 rotary operation member, 4a pin member, 56 locking member, 56a locking convex part, 56b parallel flat plate part, 56c hole part, 56d connecting hole, 56e guide shape part, 62 engaging arm, 63a locking concave part, 63b groove part, 63c protrusion part, 71 Extension handle, 72 operation rod, S gripping space.

Claims (10)

A main body for storing a motor as a drive source;
A hatching unit having a hatching blade that operates by receiving a driving force from the motor;
With
The main body has a driving gear that rotates by the driving force of the motor,
The thatching unit has a drive transmission mechanism that transmits the rotational driving force of the drive gear to the thatching blade,
In the drive connecting portion between the drive gear arranged in the main body and the drive transmission mechanism arranged in the hatching unit, the etching unit is configured to be attached to and detached from the main body. A hand-held attachment type etching device. In the hand-held attachment type etching device according to claim 1,
The hand-held attachment type hatching device, wherein the drive transmission mechanism is configured to rotate the hatching blade around a rotation axis in a direction orthogonal to a rotation axis direction of a rotation driving force of the drive gear. In the hand-held attachment type etching device according to claim 2,
The drive transmission mechanism is configured such that when the hand-held attachment type hatching device is placed on a horizontal plane, the driving force is transmitted from the drive gear arranged in a substantially vertical direction, and a rotational driving force around the vertical axis is transmitted by the hatching blade A hand-held attachment type etching device, wherein transmission is carried out so as to rotate around an axis. In the hand-held attachment type etching device according to claim 3,
The drive transmission mechanism is
A gear train that transmits a rotational driving force around the vertical axis of the drive gear to a driving pulley that rotationally drives around the horizontal axis;
A driven pulley fixedly installed on the shaft end on one side of the rotating shaft provided in the thatching blade;
A transmission belt stretched between the drive pulley and the driven pulley;
A hand-held attachment type etching device characterized by comprising: In the hand-held attachment type hatching device according to any one of claims 1 to 4,
A hand-held attachment type hatching device, characterized in that a sled body is arranged on the counter drive connecting portion side of the stitching unit. In the hand-held attachment type etching device according to claim 5,
The sled body is provided with a position-adjusting mechanism capable of adjusting a protruding amount of the slitting blade projecting from the bottom surface of the bottom plate of the sled body. In the hand-held attachment type etching device according to claim 5 or 6,
The hand-held attachment type hatching device, characterized in that an upper region of the bottom plate of the sled body and a rear region of the hatching blade is configured as a storage region for a hatch collected by the hatching blade. In the hand-held attachment type etching device according to claim 7,
A hand-held attachment type hatching device, wherein a rear wall defining a rear portion of the storage area is configured as an openable / closable lid. In the hand-held attachment type etching device according to any one of claims 1 to 8,
The handheld device is configured such that the main body portion is positioned in the center in the left-right direction of the hatching unit when the handheld attachment type etching device is placed in a horizontal plane when viewed in a plan view. Attachment type stitching device. In the hand-held attachment type etching device according to any one of claims 1 to 9,
The main body portion is provided with a grip portion that receives grip from an operator,
The gripping unit can be provided with an extension handle having a long operation rod, and is a hand-held attachment type etching device.

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