JP2013111020A - Reaper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reaper more reducing a burden on a worker when attaching a chip receiver.SOLUTION: The reaper includes a blade 2 extending in a longitudinal direction, a blade supporting part supporting the blade 2, a chip receiver 3 detachably and slidingly attached to a supporting beam 12 of the blade supporting part in a longitudinal direction, and a holding mechanism for holding the chip receiver 3 on the blade supporting part. The holding mechanism is provided with an elastic deformation part 43 which is not elastically deformed in a prescribed zone from a slide-starting point and is elastically deformed when passing over through the prescribed zone so as to increase friction resistance to sliding movement when the chip receiver 3 is slidably attached.

Description

  The present invention relates to a reaper provided with a detachable chip receiver.

  Conventionally, the present applicant has already proposed one of the following patent documents as this type of reaper. That is, the chip receiver is slid and attached to the blade holder, and has an advantage that the attaching / detaching operation becomes extremely easy as compared with the conventional attachment structure using screws. Specifically, a pair of left and right protruding walls (engaging bodies) extending in the longitudinal direction (front-rear direction) are provided on the lower surface of the upper mounting portion of the chip receiver so as to protrude downward, while the lower surface of the upper mounting portion of the chip receiver. A pair of left and right projecting walls (locking portions) extending in the longitudinal direction are projected upward on the upper surface of the upper cutter holder facing the upper side, and the outer side surface of the protruding wall of the chip receiver is placed on the upper cutter holder. Slide the chip receiver on the inner side of the protruding wall. Further, a concave strip (engagement portion) extending in the longitudinal direction is formed on the upper surface of the lower mounting portion of the chip receiver located below the lower cutter holder, and the lower cutter holder is disposed inside the concave strip. Slide.

  The distance between the protruding walls of the chip receiver is slightly larger than the distance between the protruding walls of the upper cutter holder, and the width of the concave groove of the chip receiver is slightly narrower than that of the lower cutter holder. The protruding wall of the upper mounting part of the chip receiver is elastically deformed inward in the left-right direction so as to narrow the gap, and the lower mounting part of the chip receiver is elastically deformed outward in the left-right direction so that the width of the recess is widened. However, the chip receiver is firmly held by the upper and lower blade holders by their elastic restoring force.

  However, the protruding wall and recess of the chip receiver and the protruding wall of the upper blade holder are formed over their entire length. Therefore, when the chip receiver is slid and mounted, the chip receiver is moved from its sliding start point. The protruding wall and the lower mounting portion slide with the upper and lower blade holders while being elastically deformed. Further, as the sliding amount from the slide start point increases, the elastic deformation region of the protruding wall and the lower mounting portion of the chip receiver increases, and the sliding resistance increases accordingly.

Japanese Patent No. 3121580

  Therefore, the present invention has been made in view of the above-described conventional problems, and an object thereof is to provide a reaper that can further reduce the burden on the operator when the chip receiver is mounted.

  The present invention has been made to solve the above-described problems, and a reaping machine according to the present invention includes a blade extending in the front-rear direction, a blade support portion supporting the blade, and a detachable attachment to the blade support portion in the front-rear direction. A reaping machine including a chip receiver that is slidably mounted on a blade, and includes a holding mechanism for holding the chip receiver on a blade support, and the holding mechanism is predetermined from a slide start point when the chip receiver is slid. The inside of the section is not elastically deformed, and is provided with an elastic deformation portion that elastically deforms after the predetermined section and increases the frictional resistance against sliding movement.

  When the chip receiver is slid and mounted on the reaper having the above structure, the elastic deformation portion of the holding mechanism does not elastically deform within a predetermined section from the slide start point, so that the friction resistance when the chip receiver slides within the predetermined section Is small. Therefore, the workability is improved at the slide starting point where the posture of the chip receiver is difficult to stabilize, and the chip receiver can be easily mounted on the blade support portion. Then, when the predetermined section is passed, the elastic deformation portion is elastically deformed and the frictional resistance against the slide movement is increased, but at that time, the tip receiver is already attached to the blade support portion for a predetermined length. Therefore, the posture of the chip receiver is stable, and therefore the chip receiver can be smoothly slid to the end point of sliding as it is.

  In particular, the elastic deformation portion is provided on one member of the blade support portion and the chip receiver, and the holding mechanism does not contact the other member of the blade support portion and the chip receiver in the predetermined section. One member is provided with an abutting portion that abuts the other member after a predetermined interval, and the elastic deforming portion is elastically deformed when the corresponding abutting portion abuts the other member. It is preferable that a locking portion for locking the contact portion at the slide end point is provided. In this configuration, the elastic deformation portion is elastically deformed when the contact portion contacts the other member, so that the position where the elastic deformation portion starts elastic deformation can be easily determined. And since the latching | locking part provided in the other member latches a contact part in a slide end point, a chip receiver can be reliably hold | maintained at a slide end point.

  Furthermore, it is preferable that a leaf spring is provided as the elastic deformation portion, and a contact portion is formed on the leaf spring. The elastically deforming portion and the abutting portion can be formed of separate members. However, by forming the two integrally with a leaf spring, the number of parts can be reduced and the structure can be simplified, resulting in improved durability. Moreover, since it is a leaf | plate spring, a contact part can also be formed easily.

  As described above, in the reaper according to the present invention, the chip receiver is provided with the elastic deformation portion that does not elastically deform within the predetermined section from the slide start point and elastically deforms after the predetermined section. The slide can be easily mounted, reducing the work load. Further, in the reaper, the chip receiver is mounted toward the blade, but since the chip receiver can be easily slid and mounted, the risk of injury during the mounting operation is reduced.

The top view which shows the reaper in one Embodiment of this invention. The front view which shows the principal part of the reaper. The QQ sectional view taken on the line of FIG. FIG. 2 is a cross-sectional view of the main part of line PP in FIG. 1. Sectional drawing which shows the chip receiver of the same reaper. The bottom view which shows the principal part of the chip receiver of the reaper. The principal part enlarged view of FIG. The principal part sectional drawing which is a state in the middle of mounting | wearing the chip receiver with the reaper, and shows the state just before the contact part of a chip receiver contacts a blade support part. The principal part top view which shows the state when it is in the middle of mounting | wearing the chip receiver with the same reaper, and the contact part of a chip receiver contact | abutted to the blade support part. The principal part sectional drawing which is a state in the middle of mounting | wearing the chip receiver with the same reaper, and shows a state when the contact part of a chip receiver contacts the blade support part. The principal part sectional drawing which is the state in the middle of mounting | wearing the chip receiver with the same reaper, and shows the state after the contact part of the chip receiver contacted the blade support part.

  Hereinafter, a reaper according to an embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, the reaper in the present embodiment is also called a hedge trimmer, and is driven by a motor (not shown) built in the main body 1 and reciprocates in the front-rear direction. And a chip receiver 3 for temporarily collecting the branches and leaves cut by the blade 2.

  The blade 2 extends forward from the main body 1 and includes a pair of blade bodies 3 and 4 that face each other vertically as shown in FIGS. 3 and 4. Each of the blade bodies 3 and 4 has a plate shape extending in the front-rear direction, and a triangular or trapezoidal blade portion projecting sideways is formed at regular intervals in the front-rear direction on both sides thereof. However, the interval (pitch) between the blade portions may be changed. For example, the interval between the front blade portions of the blade bodies 3 and 4 may be larger than the interval between the rear blade portions. The pair of upper and lower blade bodies 3 and 4 alternately reciprocate back and forth, so that the branches and leaves can be cut off. The two upper and lower blade bodies 3 and 4 do not reciprocate together, but one may be a fixed blade and the other a movable blade. In FIG. 1, reference numeral 4 denotes a main handle provided integrally with the main body 1, and reference numeral 5 denotes an auxiliary handle provided on the main body 1 so as to be pivotable back and forth. Further, as shown in FIG. 2, a guard plate 6 is attached to the front portion of the main body 1 to prevent branches and leaves cut by the blade 2 from moving toward the rear operator.

  The blade 2 is supported by the blade support portion so as to be able to reciprocate back and forth. The blade support portion supports the blade 2 so as to be sandwiched from above and below. Specifically, the blade support portion also extends in the front-rear direction in the same manner as the blade 2, and its rear end portion is attached and fixed to the main body 1, and the upper component member and the lower component member are held to hold the blade 2 up and down. Mainly composed of. A plate-like lower support plate 10 is provided as a lower component located below the blade 2, and the upper component located above the blade 2 is composed of three members. An upper support plate 11, a substantially U-shaped support beam 12 that opens upward and is superimposed on the upper side of the upper support plate 11, and a cover body 13 that covers the upper opening of the support beam 12. Become.

  A cylindrical spacer 14 is arranged between the upper support plate 11 and the lower support plate 10 as shown in FIG. 4, and the vertical distance between the upper support plate 11 and the lower support plate 10 by the spacer 14. Is set. On the other hand, the blade 2 is formed with a plurality of long holes 15 that are long in the front-rear direction. By positioning the spacer 14 in the long hole 15, the blade 2 can reciprocate back and forth. Bolts 16 are inserted from the lower side so as to penetrate the spacer 14 in the vertical direction, and a nut 17 is screwed onto the bolt 16 from the upper side of the support beam 12, thereby lowering the lower support plate 10 and the upper support plate. 11 and the support beam 12 are connected and fixed up and down via a spacer 14. A plurality of spacers 14 and bolts 16 are arranged at intervals in the front-rear direction as shown in FIG. The upper support plate 11 and the lower support plate 10 are preferably made of a material excellent in durability against sliding of the blade 2. The upper support plate 11 is preferably thinner than the lower support plate 10.

  The support beam 12 is made of an aluminum extruded material formed such that the front-rear direction is the extrusion direction, and includes a bottom plate portion 20 that overlaps the upper support plate 11 and a pair of left and right that rises upward from both side edges of the bottom plate portion 20. It consists of a side wall 21. Concave grooves 22 are formed on the outer surfaces of the side wall portions 21 of the support beam 12 along the front-rear direction. The concave groove 22 is for slidingly attaching the chip receiver 3 to the blade support portion along the front-rear direction, and is formed from the front end portion to the rear end portion of the support beam 12. Further, a concave groove 23 is formed in the upper part of the inner surface of each side wall portion 21 along the front-rear direction, and the flange portion 13 a of the cover body 13 is engaged with the concave groove 23.

  The cover body 13 has a substantially U-shape in a cross-sectional view that opens downward, and flange portions 13a project from the lower ends of both side portions toward the sides, and the flange portions 13a have concave grooves 23 formed therein. By sliding, the cover body 13 can be mounted while sliding backward from the front end portion of the support beam 12, and conversely, the cover body 13 can be removed from the support beam 12 by sliding forward. When the cover body 13 is removed from the support beam 12, the upper opening of the support beam 12 is opened, and the upper surface of the bottom plate portion 20 is exposed. In this state, the nut 17 can be screwed and fastened. . The cover body 13 is formed by molding from resin, for example. Note that a cap 18 is attached from the front side to a substantially rectangular front end opening formed by the support beam 12 and the cover body 13 (see FIGS. 1, 2, and 10). The upper surface 18a of the cap 18 is an inclined surface that becomes lower toward the front side, and the upper surface 18a substantially coincides with the height of the upper surface 13b of the cover body 13 at the rear end.

  The chip receiver 3 is slidably mounted on the blade support portion having such a configuration. The chip receiver 3 is formed by molding or the like from synthetic resin, for example, and the upper surface thereof is a substantially horizontal flat surface, and a placement portion 31 on which branches and leaves are placed, and outward from one side portion of the placement portion 31 It has a standing wall portion 32 that rises obliquely upward and receives branches and leaves, and an attachment portion that is formed on the other side of the lower surface of the placement portion 31 and is attached to the blade support portion. The mounting portion 31 has a length that covers substantially the entire length of the blade 2, and the standing wall portion 32 is formed so as to surround the mounting portion 31 from three sides by going around the front end portion and the rear end portion of the mounting portion 31, respectively. Has been. A ceiling part may be further extended from the standing wall part 32 to prevent the branches and leaves from scattering upward.

  The mounting portion of the chip receiver 3 includes a pair of left and right mounting side walls 33 that protrude downward from the lower surface of the mounting portion 31. The attachment side wall 33 is formed over substantially the entire length of the chip receiver 3, and a predetermined gap is formed between the side wall portion 21 and the side wall portion 21 of the support beam 12 as shown in FIG. Is located. Further, as shown in FIGS. 5 to 7, an engagement protrusion 34 that engages with the concave groove 22 formed on the outer surface of the side wall portion 21 of the support beam 12 is provided on the inner surface of the lower end portion of the mounting side wall 33. Projected. The engagement protrusion 34 has a shape having a predetermined length in the front-rear direction, and a plurality of the engagement protrusions 34 are formed at intervals in the front-rear direction, that is, the slide direction. In the present embodiment, a total of four engaging protrusions 34 are formed. The engagement protrusion 34 is formed so as to be engaged with the concave groove 22 of the support beam 12 while maintaining a predetermined clearance, and the attachment side wall 33 is elastically deformed to sandwich the support beam 12 from the outside. It has not been. As shown in FIG. 5, the chip receiver 3 has a symmetric shape about the center in the front-rear direction, and the orientation of the standing wall 32 with respect to the blade 2 is opposite to the left and right, but the slide receiver can be mounted from both front and rear. It can be done. Of the four engagement protrusions 34, the front and rear engagement protrusions 34 are devised so that they can be smoothly engaged with the concave groove 22 at the start of slide mounting. That is, as shown in FIG. 6, the engaging protrusions 34 positioned at both front and rear ends are inclined surfaces 34 a whose inward leading end surfaces are widened at the end portion on the slide start side. Further, as shown in FIG. 7, downward inclined surfaces 34 b are respectively formed at both front and rear end portions of the upper surface of the engagement protrusion 34, and the downward inclined surface 34 b is formed on all the engagement protrusions 34. Yes. Thus, the engagement protrusion 34 can be smoothly engaged with the concave groove 22.

  Further, as shown in FIG. 3, a sliding projection 35 projects downward from the mounting side wall 33 at a predetermined distance from the mounting side wall 33. The sliding projection 35 is slidably formed on the upper surface of the side wall portion 21 of the support beam 12, and does not contact the cover body 13, and a predetermined gap is formed therebetween. The sliding projections 35 are arranged symmetrically inside the mounting side walls 33, and are formed at a plurality of positions so as to form a row with a space in the front-rear direction as shown in FIG. In the present embodiment, a total of six sliding protrusions 35 are formed in one row, and a total of twelve are formed in the left and right rows. As shown in the figure, the sliding protrusion 35 is formed in a region where the engaging protrusion 34 is not formed in the front-rear direction.

  Next, a holding mechanism for holding the chip receiver 3 on the blade support will be described. As shown in FIG. 5, a leaf spring 40 is attached to the center portion of the chip receiver 3 in the front-rear direction. As shown in FIG. 4, the leaf spring 40 has a contact portion 41 that protrudes while curving downward in an arc shape at the center in the front-rear direction. The mounting portion 31 is formed with a through-hole penetrating vertically, and the contact portion 41 is incorporated into the mounting portion 31 from above so that the contact portion 41 protrudes downward from the lower surface of the mounting portion 31 through the through-hole. It is. The front and rear ends of the leaf spring 40 are formed with locking pieces 42 bent upward at substantially right angles, and a pair of front and rear locking protrusions protruding upward from the mounting portion 31. 36, the front and rear locking pieces 42 of the leaf spring 40 are locked from below. A region between the locking piece portion 42 and the contact portion 41 is a flat spring portion 43 (elastic deformation portion), and the contact portion 41 contacts the upper surface 13b of the cover body 13 as shown in FIG. In the free state, the spring portion 43 is in contact with the upper surface of the placement portion 31 and is not elastically deformed. On the other hand, as shown in FIG. 4, in a state where the contact portion 41 is in contact with the upper surface 13 b of the cover body 13, the spring portion 43 is elastically deformed so as to be lifted obliquely upward from the upper surface of the placement portion 31. A spring retainer 44 is provided on the upper side of the leaf spring 40 to retain the end portions of both spring portions 43 from above. The spring retainer 44 also has a shape extending in the front-rear direction, and a pressing protrusion 45 for pressing the spring portion 43 is formed on the lower surface of both ends, and the locking protrusion of the mounting portion 31 is formed on the upper surface of both ends. A locking step 46 is formed on 36 to be locked from below. The leaf spring 40 and the spring retainer 44 are attached to the mounting portion 31 from the upper side. When attaching the leaf spring 40 and the spring retainer 44, the leaf spring 40 and the spring retainer 44 are obliquely inclined, and the left side of FIG. One locking piece portion 42 of the leaf spring 40 and one locking step portion 46 of the spring retainer 44 are first inserted and locked below the protrusion 36, and then the other locking piece portion 42 or The other locking step 46 is locked to the locking protrusion 36 on the right side in the figure.

  As described above, the contact portion 41 of the leaf spring 40 contacts the upper surface 13b of the cover body 13. When the chip receiver 3 reaches the slide end point at a predetermined position, the contact portion 41 is locked. A locking recess 47 (locking portion) is formed on the upper surface 13 b of the cover body 13. The locking recess 47 is formed in an arc shape as shown in FIG. Even when the contact portion 41 is engaged with the engaging recess 47 so as to be engaged, the spring portion 43 has a predetermined elastic deformation amount although the elastic deformation amount is reduced. Further, a stopper wall 48 that continuously rises from the bottom surface of the locking recess 47 protrudes upward from the rear of the locking recess 47. The stopper wall 48 prevents the contact portion 41 from moving backward. Even if the contact portion 41 moves upward so as to get over the stopper wall 48 to the rear side, the spring retainer 44 presses the spring portion 43 from the upper side. The stopper wall 48 is prevented from getting over. Accordingly, the abutting portion 41 can be detached from the locking recess 47 to the front side but not to the rear side within the range of the force normally acting on the chip receiver 3. However, in this embodiment, even if the chip receiver 3 is excessively pushed backward, the chip receiver 3 contacts the guard plate 6 as shown in FIG. It has become.

  In order to slide-mount the chip receiver 3 on the reaper configured as described above, the chip receiver 3 is slid backward from the front end portion of the support beam 12. At that time, the support beam 12 is inserted between the pair of left and right mounting side walls 33 of the chip receiver 3. At the slide start point where the engagement protrusion 34 of the chip receiver 3 starts to engage with the concave groove 22 of the support beam 12, since the support beam 12 is not sandwiched between the left and right attachment side walls 33, the engagement protrusion 34 smoothly. Can be engaged with the concave groove 22. Further, since the contact portion 41 of the leaf spring 40 is located at the center in the front-rear direction of the chip receiver 3, as shown in FIG. 8, the section (predetermined half the total slide length from the slide start point). Until the section), the contact portion 41 does not contact the cover body 13 and the cap 18, and therefore the spring portion 43 of the leaf spring 40 does not elastically deform. Therefore, the mounting operation can be started easily at the slide start point where the posture of the chip receiver 3 is difficult to stabilize. Further, the engaging projection 34 located at the end portion is formed with an inclined surface 34a that extends to the left and right, and a downwardly inclined surface 34b is also formed on the upper surface of the engaging projection 34. The engaging protrusion 34 can be smoothly engaged with the concave groove 22.

  Thereafter, the chip receiver 3 is slid rearward, but the engaging protrusions 34 are not formed continuously in the front-rear direction, but are formed at a plurality of positions at intervals. The frictional resistance (sliding resistance) between the grooves 22 can be smoothly slid without being excessively increased. And since the sliding protrusion 35 which can contact | abut to the upper surface 13b of the cover body 13 is formed in the area | region between the adjacent engaging protrusions 34, the structure in which the engaging protrusion 34 was formed at intervals Even so, the chip receiver 3 can slide smoothly without being twisted. Since the sliding projections 35 are also formed at intervals, the frictional resistance can be minimized.

  When the chip receiver 3 is slid to about half of the entire length, the contact portion 41 of the leaf spring 40 contacts the upper surface 18a of the cap 18 as shown in FIGS. Since the upper surface 18a of the cap 18 is an inclined surface that becomes higher toward the rear and there is no step between the upper surface 13b of the cover body 13, the contact portion 41 is gradually pushed upward while being guided by the upper surface 18a of the cap 18. Then, as shown in FIG. 11, it automatically comes into contact with the upper surface 13 b of the cover body 13. As the contact part 41 moves upward, the spring part 43 is elastically deformed, and an elastic restoring force acts on the contact part 41 downward. Therefore, the frictional resistance against the sliding movement of the chip receiver 3 is increased by the contact portion 41 contacting the cover body 13. However, in this state, the slide movement of the predetermined length has already been completed and the posture of the chip receiver 3 with respect to the support beam 12 is stable, and thereafter the chip receiver 3 is pushed smoothly to the slide end point that is the predetermined position. Can do. As shown in FIG. 11, when the contact portion 41 slides on the upper surface 13 b of the cover body 13, the spring portion 43 is in contact with the spring retainer 44 or is slightly spaced.

  When the slide end point is reached, as shown in FIG. 4, the contact portion 41 is fitted into the locking recess 47 and locked, and the chip receiver 3 is stopped and held at that position. The amount of elastic deformation of the spring portion 43 is reduced by the amount of contact of the contact portion 41 in the locking recess 47. However, in this embodiment, not all elastic deformation is lost, but a predetermined amount of elastic deformation remains. It has become. However, a configuration in which the elastic deformation of the spring portion 43 is completely eliminated by the contact portion 41 being fitted into the locking recess 47 may be adopted.

  Even if the contact portion 41 is moved forward from the locking recess 47 and the chip receiver 3 is moved forward, the contact portion 41 is pressed against the upper surface 13 b of the cover body 13 by the elastic restoring force of the spring portion 43. As a result, the chip receiver 3 is held in that position without dropping out forward.

  Thus, in the reaper in the present embodiment, the contact portion 41 contacts the cover body 13 and the spring portion 43 is elastically deformed from the middle of the sliding movement of the chip receiver 3 until then. In the approximately half section, the contact portion 41 does not contact the cover body 13 and the spring portion 43 is not elastically deformed. Therefore, the chip receiver 3 can be easily slid in the predetermined section that is approximately half the section from the slide start point. Can be moved. Then, the abutting portion 41 abuts on the cover body 13 at the intermediate point, and the spring portion 43 is elastically deformed. As a result, the frictional resistance increases, but the posture of the chip receiver 3 is already in a stable state. You can continue to slide easily. Moreover, since the increased frictional resistance at that intermediate point is constant until the slide end point, the frictional resistance does not gradually increase from the slide start point to the slide end point as in the prior art. The mounting work can be completed easily in terms of points. And since the chip receiver 3 can be slide-mounted smoothly, the risk of injury at the time of mounting can also be suppressed.

  Moreover, since the contact part 41 is formed in the leaf | plate spring 40, it is not necessary to make the contact part 41 and an elastic deformation part into another member, and while being able to reduce a number of parts, durability is also improved. Further, since the leaf spring 40 is also symmetric in the front-rear direction, there is an advantage that the frictional resistance is the same even if the chip receiver 3 is slid and mounted from either the front-rear direction.

  Furthermore, since the contact portion 41 of the leaf spring 40 is brought into contact with the cover body 13 instead of the support beam 12, the support beam 12 is made of a metal such as an aluminum extrusion material, so that the blade support portion is sufficient. In addition to providing strength, the cover body 13 can be made of a synthetic resin material having good slidability, and the locking recess 47 can be easily formed.

  In addition, in this embodiment, although the latching recessed part 47 was made into circular arc shape in the longitudinal cross-sectional view of the front-back direction, the shape is arbitrary, such as V shape. Further, for example, when the locking recess 47 is V-shaped, instead of projecting the stopper wall 48 as described above at the rear thereof, or together with the stopper wall 48, the V-shaped locking The rear inclined surface of the recess 47 may be steeper than the front inclined surface to prevent the contact portion 41 from being detached from the locking recess 47 to the rear side. Similarly, the contact portion 41 may have various shapes such as a triangular protrusion instead of an arc-shaped protrusion.

  Moreover, in the said embodiment, although the guard board 6 is provided in the back and it becomes the structure by which the backward movement of the chip receiver 3 is blocked | prevented by the card board 6, the length of the cutter 2 is the length of this embodiment, for example. There is also a configuration in which a predetermined gap is formed between the guard plate 6 and the chip receiver 3 as in the case where it is longer than the one. In such a case, when a force larger than the force that normally acts in an emergency such as when the reaper is dropped is applied to the chip receiver 3, the contact portion 41 moves forward from the locking recess 47. In addition to being able to detach, it is also possible to get over the stopper wall 48 and detach to the rear side, thereby reducing the drop impact and preventing the chip receiver 3 from being damaged.

  Furthermore, the leaf spring 40 is provided in the chip receiver 3 and the locking recess 47 is formed in the cover body 13. On the contrary, the plate spring 40 is provided in the cover body 13 and the locking recess 47 is formed in the chip receiver 3. You may do it. In that case, it is preferable to attach the leaf spring 40 to the position of the locking recess 47 formed in the cover body 13 so that the contact portion 41 faces upward. Further, the locking recess 47 may be formed in the support beam 12 instead of forming the locking recess 47 in the cover body 13. Similarly, the leaf spring 40 may be provided on the support beam 12. When the locking recess 47 is formed in the support beam 12 or the leaf spring 40 is attached, it can be formed or attached to the upper surface or the side surface of the side wall portion 21, for example.

  In the above embodiment, the leaf spring 40 is provided at the center in the front-rear direction of the chip receiver 3. However, the leaf spring 40 may be provided at a position offset to any one of the front and rear. What is necessary is just to make it the structure which 41 contact | abuts.

  Further, the leaf spring 40 is used as the elastic deformation portion. However, the elastic member is not limited to the plate spring 40, and the elastic deformation portion may be formed integrally with the chip receiver 3, the cover body 13, or the like, for example.

  Furthermore, although the concave locking recess 47 is formed as a locking portion for locking the contact portion 41 at the slide end point, the locking portion may not be concave, for example, the upper surface of the mounting portion 31. A convex portion may be formed as a locking portion, and the contact portion 41 may be locked on the rear surface of the convex portion.

DESCRIPTION OF SYMBOLS 1 Main body 2 Cutlery 2a Blade 2b Blade 3 Chip receiver 4 Main handle 5 Auxiliary handle 6 Guard plate 10 Lower support plate (cutlery support part)
11 Upper support plate (blade support part)
12 Support beam (blade support part)
13 Cover body (blade support part)
13a Flange portion 13b Top surface 14 Spacer 15 Long hole 16 Bolt 17 Nut 18 Cap 18a Top surface 20 Bottom plate portion 21 Side wall portion 22 Recessed groove 23 Recessed groove 31 Mounting portion 32 Standing wall portion 33 Side wall for attachment 34 Engagement protrusion 34a Inclined surface 34b Inclined surface 35 Sliding protrusion 36 Locking protrusion 40 Plate spring 41 Contacting part 42 Locking piece part 43 Spring part (elastic deformation part)
44 Spring presser 45 Pressing projection 46 Locking stepped portion 47 Locking recess (locking portion)
48 Stopper wall

Claims (3)

A reaping machine comprising a blade extending in the front-rear direction, a blade support part that supports the blade, and a chip receiver that is slidably attached to the blade support part in the front-rear direction,
Provided with a holding mechanism for holding the chip receiver on the blade support,
The holding mechanism includes an elastic deformation portion that does not elastically deform within a predetermined section from the slide start point when the chip receiver is mounted on the slide, and elastically deforms after the predetermined section to increase a frictional resistance against the slide movement. Characteristic reaper.   The elastic deformation portion is provided on one member of the blade support portion and the chip receiver, and the holding mechanism does not contact the other member of the blade support portion and the chip receiver in the predetermined section. When one of the members is contacted with the other member, the elastic deformation portion is configured to elastically deform when the corresponding contact portion contacts the other member. The reaper according to claim 1, further comprising a locking portion for locking the contact portion at the end point.   The reaper according to claim 2, wherein a leaf spring is provided as the elastically deforming portion, and a contact portion is formed on the leaf spring.

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