JP2010119353A - Rotary case equipped with mechanism for delivering nylon cutter for mower - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that a mower equipped with a nylon cutter conventionally requires the action for delivering a spare nylon cutter from a bobbin (a winding mechanism) in a rotary case when the nylon cutter is worn out to make mowing difficult, and that the disassembly of a housing or a cover is difficult although a structure for automatically delivering the nylon cutter by the rotation of the bobbin is adopted in the case. <P>SOLUTION: The rotary case enabling automatic delivery is constituted of the housing having a hooking hole and a screw part to be attached to a rotary shaft of a mower, an upper bottom part having a cylindrical through-hole, first and second engaging fragments installed in the upper and lower parts of the through-hole and an attaching hole, the bobbin having a groove on the periphery part, a clutch to be inserted into the bobbin and having first and second ridges protruded from the outer surface, a spring, a fixing screw, and a cover having a ringlike wall stood from the bottom part, a hooking fragment, a guide piece fitted in the slit and a hole. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a rotating case provided with a feeding mechanism of a nylon cutter (nylon cord) of a mower.

  Conventionally, in the case of a rotary case of a mower equipped with a nylon cutter, if this nylon cutter becomes worn and shortens due to wear, making it difficult to cut the grass, the bobbin (winding mechanism) in this rotary case An operation to feed out a spare nylon cutter is required. In this case, there are a structure in which the bobbin is rotated by an operation on the bobbin (an operation to hit the ground), and a nylon cutter is automatically fed out by this rotation, and a structure in which the bobbin is rotated by a manual operation and fed out. Are known. Among these, a structure that automatically extends through an operation on a bobbin will be described using prior literature. The outline will be described below.

  Document (1) is “a simplified pump feed type cutting head assembly of an elastic line trimmer” disclosed in Japanese Patent Laid-Open No. 3-195410. The present invention relates to a mounting hole (mounting portion) for mounting a rotary shaft of a mower, a bowl-shaped cutting head assembly (housing) having a locking opening (hooking hole), and a through cylinder of the cutting head assembly A line release button (clutch) having a rectangular cross-section tooth member (first protrusion) inserted in the outer peripheral surface, and a rectangular cross-section tooth member (first engagement) on the inner wall fitted to the line release button Stop piece), a line storage spool (bobbin) provided with a tooth member (second locking piece) having a rectangular cross section and two grooves for mounting a line (nylon cutter) on the outer peripheral surface thereof, and the cutting It is composed of a locking dove (hanging piece) that is locked to the locking opening of the head assembly, and a cover body (cover) that has a through hole. Through the engagement of the tooth member of the rectangular section of the button, this line storage thread Rotating the Lumpur, the line is automatically released (out Repetitive) feeding possible to. The feature of this document (1) is that the line is fed out by using the pressing (striking) of the line release button, and the feeding length can be adjusted through repetition of this striking operation.

  Further, this document (2) is “a cord feeding mechanism in a cutting blade device of a cord type mower” disclosed in Japanese Patent Laid-Open No. 6-30626. In the structure of the present invention, a first locking claw and a second locking claw are projected on the front and back surfaces of the upper and lower flanges of the bobbin, are loosely fitted in the bobbin, and are slid onto the rotating case (howling). A switching member provided with a striking portion provided movably, a latching claw provided on the outer peripheral wall of the switching member, a rotating case, and a spring for biasing the switching member provided between the cover and a cover; The cover hooking piece is fitted and locked in the hooking hole of the rotating case, and is integrated to form the main part of the mower, and the striking part of the switching member protrudes from the cover. The configuration. Then, the hitting portion is inserted into the cover through the hitting of the hitting portion, the bobbin is rotated via the engagement release of the second locking claw and the locked claw, and the first engagement The bobbin is stopped from rotating through the engagement between the pawl and the pawl and the nylon cutter can be fed out during the engagement from the moment when the engagement is released. The feature of this document (2) is that the feeding length can be adjusted through the feeding of the nylon cutter and the repetition of this striking operation by utilizing the difference in rotational speed between the bobbin and the switching member.

  Reference (3) is “a cord feeding device of a brush cutter and a cord routing method in the cord feeding device” of JP-A-2005-124501. In the structure of the present invention, a pressing claw is provided on the inner surface of the upper wall of the case lid (housing), and an engaging recess is provided on the bottom wall of the case main body (cover). A forward claw and an engaging projection are provided on the front and back surfaces of the upper and lower walls of a bobbin (reel member) provided and provided with a pressing part, and a spring for biasing the pressing part is provided between the case lid and the bobbin. The bobbin pressing part protrudes from the case body. The press portion is inserted into the case main body through striking of the press portion, the engagement concave portion and the engagement convex portion are disengaged, the bobbin is rotated, Rotate the bobbin through the engagement of the During the nylon cutter, to allow unwinding. The feature of this document (3) is that dust, dirt, and grass do not invade into the outer case (consisting of a case body and a case lid) because a nylon cutter insertion hole is opened in the dish-shaped cover. is there.

JP-A-3-195410 JP-A-6-30626 JP-A-2005-124501

  In each of the documents (1) to (3), the housing and the cover are integrated by a hook hole and a hook piece. Accordingly, the base of the hook piece is pressed, the claw portion of the hook piece is separated from the end of the hook hole, and the cover is removed from the housing in a state where the housing and the cover are released. . Therefore, it is necessary to apply force to the fingertips, and to cover the cover, and to attach the hand to the cover. This is troublesome, and for women and men with relatively small hands, removal of the cover is required. There was a risk of difficulty in work. This improvement is highly desired.

  In view of the above, the present invention provides a rotating case having a nylon cutter feeding mechanism for a mower with the following effects.

  “1” By rotating the cover, the engagement state between the hooking hole and the hooking piece is released, the cover can be removed easily and smoothly, and the bobbin and / or nylon cutter can be replaced. A rotating case with a nylon cutter feed mechanism.

  “2” Further, a rotating case provided with a nylon cutter feeding mechanism of a mowing machine capable of rotating a bobbin via a clutch strike while rotating the mower and feeding a nylon cutter to a predetermined length.

  “3” The structure is designed to rotate and stop rotation of the bobbin through locking and unlocking of the first and second locking pieces provided on the bobbin and the first protrusion provided on the clutch. Rotating case with a nylon cutter feed mechanism for a mower capable of feeding a smooth nylon cutter.

  “4” In addition, a structure that allows the spring to be locked to the housing and the clutch is adopted, and the bobbin is inserted and removed in a reliable and smooth manner, and a nylon cutter feed mechanism for the grass cutter that can move back and forth in the vertical direction is provided. Rotating case.

  The invention of claim 1 provides a rotating case provided with a feeding mechanism of a nylon cutter of a mower that can expect the effects of “1” to “4” described above.

Claim 1 is a hook-shaped housing provided with a hook hole provided in a pair on the upper wall of the housing body, and a screw portion attached to the rotary shaft of the mower at the center thereof,
An annular through-hole provided in the main body having an upper surface attached to the inner surface of the upper wall of the housing, a plurality of first locking pieces across the upper portion of the through-hole, and the center of the through-hole An upper bottom portion provided in the upper bottom portion, a mounting hole penetrating the upper bottom portion, a second locking piece provided at a lower portion of the through hole, and a nylon cutter around the peripheral portion of the main body portion. A bobbin with two grooves,
A clutch having a plurality of first and second ridges inserted under the through hole of the bobbin and provided with a phase change on the outer peripheral surface;
This clutch, and a spring provided in the through hole of the bobbin;
A set screw inserted into the bobbin in which the spring is inserted from the mounting hole in the upper bottom portion for attaching the clutch,
An annular wall provided at the bottom of the dish-shaped cover body, a pair of hook pieces inserted into the hook holes of the housing provided on the annular wall, and a guide for inserting a nylon cutter fitted into the slit A piece, a hole opened for inserting the clutch in the bottom, and a cover provided with a locking groove on the inner peripheral surface of the hole,
The second locking piece is provided between the first locking pieces, and the first locking piece and the second locking piece are provided with different phases in the circumferential direction of the through hole. Thus, when the clutch is pressed, the first protrusion of the clutch moves between the first and second locking pieces, and the bobbin is rotated. It is a rotation case provided with a mechanism.

  The invention of claim 2 is intended to achieve the object of claim 1 and to provide a guide piece that is optimal for achieving this object.

Claim 2 is a rotating case provided with the nylon cutter feeding mechanism of the mower according to claim 1,
The width of this guide piece is a rotating case provided with a nylon cutter feeding mechanism of a mower having a structure that is approximately the same size as the annular wall thickness of the two-row annular wall provided on the cover.

  The invention of claim 3 is intended to achieve the object of claim 2 and to provide a hook piece that is optimal for achieving the object.

Claim 3 is a rotating case provided with the nylon cutter feeding mechanism of the mower according to claim 2,
The hook piece provided on the two-walled annular wall of the cover main body is formed with a plurality of notches provided in a part of the outer wall piece of the annular wall. The rotation case provided.

  The invention of claim 4 is intended to achieve the object of claim 1 and to provide a housing that is optimal for achieving this object.

Claim 4 is a rotating case provided with a nylon cutter feeding mechanism of the mower according to claim 1,
This housing is a rotating case provided with a feeding mechanism for a nylon cutter of a mower having a hook-shaped housing body, an upper wall of the housing body, and an outer wall depending from the outer periphery of the housing.

  The invention of claim 5 is intended to achieve the object of claim 1 and to provide a hook piece that is optimal for achieving the object.

Claim 5 is a rotating case provided with a nylon cutter feeding mechanism of the mower according to claim 1,
The hook piece is a substantially hook piece in a plan view, and a curved surface that is notched in a half-moon shape toward the end side of the substantially hook piece in a rotation direction side thereof to induce rotation. It is the rotation case provided with the feeding mechanism of the nylon cutter of the mower made into the structure which forms a part.

The invention of claim 1 is a hook-shaped housing provided with a hook hole provided in the upper wall of the housing body, and a screw portion attached to the rotary shaft of the mower,
An annular through hole provided in the main body, a first locking piece that passes over the upper part of the through hole, and an upper bottom portion having a mounting hole, a second locking piece provided at the lower part of the through hole, and its periphery A bobbin accommodated in a housing having two grooves for mounting a nylon cutter on the part;
A clutch provided with first and second protrusions inserted into the bobbin through-hole and provided with a different phase on the outer peripheral surface;
A clutch, a spring provided in the through-hole of the bobbin,
A set screw for attaching the bobbin and the clutch,
It is provided on the annular wall standing on the bottom of the dish-shaped cover body, and is provided with a hook piece inserted into the hook hole of the housing, a guide piece fitted into the slit, and a clutch at the bottom. And a cover provided with a locking groove on the inner peripheral surface of the hole,
The first locking piece and the second locking piece are provided in the through hole with a phase shifted in the radial direction, and the first protrusion moves between the first and second locking pieces when the clutch is pressed. Thus, the rotating case is provided with a nylon cutter feeding mechanism of a mower having a configuration in which the bobbin rotates.

  Therefore, claim 1 has the following effects.

  “1” By rotating the cover, the engagement state between the hooking hole and the hooking piece is released, the cover can be removed easily and smoothly, and the bobbin and / or nylon cutter can be replaced. A rotating case having a nylon cutter feeding mechanism can be provided.

  [2] Further, a rotating case provided with a nylon cutter feeding mechanism of a mower capable of feeding a nylon cutter to a predetermined length and rotating a bobbin through striking a clutch while rotating the mower can be provided. .

  “3” The structure is designed to rotate and stop rotation of the bobbin through locking and unlocking of the first and second locking pieces provided on the bobbin and the first protrusion provided on the clutch. Further, it is possible to provide a rotating case provided with a nylon cutter feeding mechanism of a mower capable of feeding a smooth nylon cutter.

  “4” In addition, a structure that allows the spring to be locked to the housing and the clutch is adopted, and the bobbin is inserted and removed in a reliable and smooth manner, and a nylon cutter feed mechanism for the grass cutter that can move back and forth in the vertical direction is provided. Can provide a rotating case.

Invention of Claim 2 is a rotation case provided with the feeding mechanism of the nylon cutter of the mower of Claim 1,
The width of the guide piece is a rotating case provided with a nylon cutter feed mechanism of a mower having a structure that is approximately the same size as the annular wall thickness of the two-row annular wall provided on the cover.

  Accordingly, the second aspect of the present invention has the effects of being able to achieve the object of the first aspect and providing a guide piece that is optimal for achieving the object.

Invention of Claim 3 is a rotation case provided with the feeding mechanism of the nylon cutter of the mower of Claim 2,
The hanging piece provided on the annular wall of the two-row structure of the cover body is a rotating case provided with a nylon cutter feeding mechanism of a grass cutter formed in a plurality of notches provided in a part of the outer wall piece of the annular wall. is there.

  Accordingly, the third aspect of the present invention has the effects of being able to achieve the object of the second aspect and providing a hook piece optimal for achieving the object.

Invention of Claim 4 is a rotation case provided with the feeding mechanism of the nylon cutter of the mower of Claim 1,
The housing is a rotating case provided with a feeding mechanism for a nylon cutter of a mower made up of a bowl-shaped housing body, an upper wall of the housing body, and an outer wall depending from the outer periphery of the housing.

  Therefore, claim 4 has the effects of being able to achieve the object of claim 1 and providing an optimal housing for achieving this object.

Invention of Claim 5 is a rotation case provided with the feeding mechanism of the nylon cutter of the mower of Claim 1,
The hook piece has a substantially hook-like shape in plan view, and a substantially curved piece is cut out in a half-moon shape toward the end side at the end portion on the rotation direction side of the substantially hook piece so as to induce a rotation guide. It is the rotation case provided with the feeding mechanism of the nylon cutter of the mower.

  Accordingly, the fifth aspect of the present invention has the effects of being able to achieve the object of the first aspect and providing a hook piece optimal for achieving the object.

  An example of the present invention will be described.

  Referring to the drawings, FIG. 1 is a scaled perspective view showing the entire mower, FIG. 2 is a plan perspective view of the main part of the mower, FIG. 3-1 is an exploded perspective view of FIG. 2 is an exploded plan view of FIG. 2, FIG. 4 is a plan perspective view showing the relationship between the main part of the mower and the nylon cutter, FIG. 5 is a rear perspective view of the main part of the mower, and FIG. -1 is an exploded perspective view of FIG. 5, FIG. 6-2 is an exploded plan view of FIG. 5, and FIG. 7-1 is a plan perspective view showing the relationship between the bobbin of the main part of the mower and the nylon cutter. 7-2 is a plan perspective view showing the relationship between the cover of the main part of the mower and the bobbin and the nylon cutter, FIG. 8 is an enlarged perspective view showing the hook piece, and FIG. 9 is the cover. 10-1 is an enlarged plan view of the guide piece fitted in the slit of the annular wall, FIG. 10-1 is a cross-sectional view of the main part of the mower, the bobbin is fixed, and the nylon cutter is Issued cross-section showing a state diagram, Figure 10-2 is a cross-sectional view of a main part of the mower, bobbin movably, a cross-sectional view nylon cutter showed feeding monkey state.

  Reference numeral 1 denotes a housing having a hook shape. The housing 1 has a screw portion 2 on which a rotary shaft 40 of the mower M is screwed on an upper wall 1a of the housing body. And the surrounding wall 1b of the housing main body suspended from this upper wall 1a is provided. The upper wall 1a and the peripheral wall 1b form a bowl-shaped housing 1. The housing 1 (housing main body) is fixed to the rotating shaft 40 and rotated by the rotation of the rotating shaft 40. A pair of hooking holes 3 and 3 are formed in the upper wall 1a of the housing 1.

  Reference numeral 5 denotes a bobbin having at least two grooves 8 for mounting the nylon cutter 6 on the peripheral surface portion 5a. The bobbin 5 is provided with a main body portion having an upper surface 500 attached to the inner surface 1c of the upper wall 1a of the housing 1. An annular through-hole 9 provided in 5b, an upper portion 9a of the inner peripheral surface of the through-hole 9 and a plurality of first locking pieces 11 provided to be extended to the upper portion 9a of the annular body, and the center of the through-hole 9 The upper bottom portion 5c provided in the upper bottom portion, the mounting hole 12 penetrating the upper bottom portion 5c, and the second locking piece 13 provided inward of the lower portion 9b of the inner peripheral surface of the through hole 9. The bobbin 5 is rotatably mounted in a bowl shape of the housing 1.

  Reference numeral 15 denotes a cylindrical clutch, and a plurality of first and second protrusions 16 and 17 are provided on the outer peripheral surface 15a of the clutch 15 to change the phase and to project the upper and lower portions radially. The first protrusion 16 engages with the first locking piece 11 and the second locking piece 13 of the bobbin 5. And the engagement relationship of this 1st protrusion 16 and the 1st locking piece 11 and / or the 2nd locking piece 13 is demonstrated. First, when the first protrusion 16 is engaged with the first locking piece 11, the clutch 15 is in the most depressed state in the cover (described later), and the reverse rotation of the bobbin 5 is prevented. The vicinity of the tip of the nylon cutter 6 is prevented from sinking into a guide piece (described later), and the reliability of the subsequent nylon cutter 6 is ensured. Further, when the first protrusion 16 is engaged with the second locking piece 13, the clutch 15 is in a state of returning to the initial (normal) state, the rotation of the bobbin 5 is stopped, and the nylon cutter 6 is stopped. It is in a state where it is possible to determine the feeding length and to cut grass. In addition, when this 1st protrusion 16 is located in the clearance gap A of the 1st latching piece 11 and the 2nd latching piece 13, (in the state in which the hitting | crimping is an appropriate state, and the nylon cutter 6 can be extended | stretched) When the clutch 15 is substantially in the middle of the cover), the bobbin 5 rotates when the clutch 15 and the bobbin 5 are in a free engagement state, and the nylon cutter 6 fitted to the bobbin 5 Is fed out for a predetermined length. The clutch 15 has a structure in which the bottom portion 15b is hit against the ground. The clutch 15 has a set screw 18 fitted into a screw hole (not shown) provided in the bottom portion 15b from the mounting hole 12 of the bobbin 5. Is attached to the bobbin 5 in a state where a spring described later is contained.

  In the figure, reference numeral 20 denotes a spring, which is provided between the bottom 15b of the clutch 15 and the upper bottom 5c of the bobbin 5, and is compressed when the clutch 15 is beaten, and the beat is released. In this case, the clutch 15 returns to the state in which the first protrusion 16 engages with the second locking piece 13 of the bobbin 5 and the clutch 15 is returned to a state where the mowing is possible.

  Reference numeral 22 denotes a cover. The cover 22 includes a two-layered annular wall 23 provided on the bottom 22 a of the dish-shaped cover body 2200, and a plurality of notches 27 provided on a part of the outer wall piece of the annular wall 23. A pair of elastic hook pieces 24 (described on the other hand) to be inserted into the hook hole 3 of the housing 1, and a slit 26 for attaching the guide piece 25 for inserting the nylon cutter 6; The bottom portion 22 a is provided with a hole 28 opened for inserting the clutch 15 and a locking groove 30 provided on the inner peripheral surface 28 a of the hole 28. The bottom portion 15 b of the clutch 15 is inserted into the hole 28 of the cover 22, and the second protrusion 17 is fitted into the locking groove 30. Through this fitting, the clutch 15 can be smoothly moved back and forth (depressed and returned). The hook piece 24 is provided with a hook piece 2400 (substantially hook piece. The hook piece 2400 has an outer peripheral surface 2400a aligned with the curved surface of the annular wall 23) in plan view. The flange piece 2400 forms a curved surface portion 2401 for guiding rotation by cutting the end portion 2400b of the cover 22 in the rotation direction B side into a half-moon shape toward the end side. Accordingly, when the cover 22 is rotated in the rotation direction B while the claw portion 2400c of the collar piece 2400 is locked to the claw portion 3a of the hooking hole 3, the curved surface portion 2401 is smoothly pressed. In addition, the claw portion 2400c of the collar piece 2400 is separated from the claw portion 3a of the hook hole 3 in a state where the hook piece 24 is bent in the axial direction. In order to ensure the rotation of the cover 22, the width of the guide piece 25 is the same as the thickness of the annular wall 23 in the annular direction, and the guide piece 25 moves the cover 22 in the rotation direction B. A structure that does not interfere with rotation when rotating.

  Next, an example of the assembly and use of the present invention will be described. The clutch 15 is attached to the bobbin 5 with the spring 20 interposed, and the set screw 18 is attached. In this state, the fitted nylon cutter 6 is hooked at an appropriate position of the intermediate collar 501 of the bobbin 5, and both free ends thereof are pulled out in the radial direction of the bobbin 5. The bobbin 5 hooked with the nylon cutter 6 is inserted into the housing 1 attached to the rotary shaft M1 of the mower M, and the free end of the nylon cutter 6 is inserted into the guide piece 25 of the cover 22 within the cover 22 (the shaft The hooking piece 24 of the cover 22 is inserted into the hooking hole 3 of the housing 1 by rotation induction, and the claw 2400c of the hooking piece 24 is inserted into the claw portion 3a of the hooking hole 3. Lock. With this operation, the mower (the housing 1, the spring 20, the clutch 15, the bobbin 5, and the cover 22) is attached to the rotary shaft 40. In the figure, reference numeral 502 denotes an outer side piece.

  In this state, as shown in FIG. 10A, the bobbin 5 is at the lower limit position by the biasing force of the spring 20, and the second protrusion 17 of the clutch 15 is engaged with the locking groove 30 of the cover 22. At the same time, the first protrusion 16 of the clutch 15 is engaged with the second locking piece 13 of the bobbin 5, so that the clutch 15 and the bobbin 5 and the cover 22 are simultaneously rotated at a high speed. The housing 1 integrated with 22 also rotates at high speed. Through this high-speed rotation, grass, rice, and small trees are cut off at the end of the nylon cutter 6.

  In the above state, when grass, rice and small trees are cut and the nylon cutter 6 is worn, the bottom 15b of the clutch 15 is beaten (pressed) on the ground while the rotating case is rotating, and the spring When the urging force of 20 is released (when the spring 20 is compressed), the first protrusion 16 of the clutch 15 is disengaged from the second locking piece 13 of the bobbin 5, and the second locking piece 13 and the first engagement are released. The bobbin 5 is freed and rotated (turned) by its inertial force, reaching the gap A of the stop piece 16, and the nylon cutter 6 is fed out only by this rotated distance. And the 1st protrusion 16 of the clutch 15 is latched by the 2nd latching piece 13 of the bobbin 5, The rotation by the inertial force of this bobbin 5 stops, The delivery of the nylon cutter 6 is complete | finished. The subsequent handling is as described above. The first locking piece 11 and the second locking piece 13 have a structure in which the phases are different in the rotation direction B, and the bobbin 5 rotates at least by this phase and the penetrating force. It is a structure that acts. Moreover, the feeding length of the nylon cutter 6 can be adjusted by continuing the hitting.

  Further, when considering the removal of the cover 22 or the removal of the bobbin 5 and / or the replenishment of the nylon cutter 6, the cover 22 is rotated and the curved surface portion 2401 of the hook piece 24 provided on the cover 22 is used. There is a removal method. In this case, the cover 22 is rotated slightly in the circumferential direction so that the claw portion 3a of the hook hole 3 provided in the housing 1 is provided at the end 2400b of the hook piece 24 of the cover 22. The curved surface portion 2401 slides and warps to the outer peripheral surface 2400a of the hooking piece 24, and the hooking piece 24 bends in the axial direction, and the claw portion 2400c of the hooking piece 24 is hooked to the hooking hole of the housing 1. 3 is detached from the claw portion 3a, and the removal of the cover 22 is completed. Thereafter, the bobbin 5 is removed and / or the nylon cutter 6 is replenished as described above. In the case described above, it is a detaching method for detaching from the hooking hole 3 by utilizing the rotation of the cover 22 and the sliding of the curved surface part 2401 of the hooking piece 24, which is useful and can be easily and easily removed. It is. As another removal method, the hooking piece 24 of the cover 22 is pressed, the hooking piece 24 is forcibly bent, and the claw portion 2400c of the hooking piece 24 is moved to the hook of the hooking hole 3. A method of detaching from the part 3a is conceivable. In this case, it is conceivable that force is required for pressing, but there is no problem in removal.

Scale perspective view showing the entire mower Plane perspective view of the main parts of the mower 2 is an exploded perspective view of FIG. Exploded plan view of FIG. Plane perspective view showing the relationship between the main parts of the mower and the nylon cutter Rear perspective view of the main parts of the mower 5 is an exploded perspective view of FIG. Exploded plan view of FIG. Plane perspective view showing the relationship between the bobbin of the main part of the mower and the nylon cutter Top perspective view showing the cover of the main part of the mower and the relationship between the bobbin and the nylon cutter Enlarged perspective view showing the hook Enlarged plan view of the guide piece fitted in the slit of the annular wall of the cover It is sectional drawing of the principal part of a mower, The sectional view which showed the state by which the bobbin was fixed and the nylon cutter was extended It is sectional drawing of the principal part of a mower, and sectional drawing which showed the state which a bobbin is movable and a nylon cutter extends

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Housing 1a Upper wall 1b Peripheral wall 1c Inner surface 2 Screw part 3 Hooking hole 3a Claw part 5 Bobbin 5a Peripheral surface part 5b Main body part 5c Upper bottom part 500 Upper surface 501 Intermediate flange 502 Outer flange 6 Nylon cutter 8 Groove 9 Through hole 9a Upper part 9b Lower part 11 First locking piece 12 Mounting hole 13 Second locking piece 15 Clutch 15a Outer peripheral surface 15b Bottom part 16 First protrusion 17 Second protrusion 18 Set screw 20 Spring 22 Cover 22a Bottom part 2200 Cover body 23 Annular wall 24 Hook 2400 Fence 2400a Outer surface 2400b End 2400c Claw 2401 Curved surface 25 Guide piece 26 Slit 27 Notch 28 Hole 28a Inner surface 30 Locking groove 40 Rotating shaft A Clearance B Rotation direction M Mower

Claims (5)

A hook-shaped housing provided with a hook hole provided in a pair on the upper wall of the housing body, and a screw portion attached to the rotary shaft of the mower at the center thereof,
An annular through-hole provided in the main body having an upper surface attached to the inner surface of the upper wall of the housing, a plurality of first locking pieces across the upper portion of the through-hole, and the center of the through-hole An upper bottom portion provided in the upper bottom portion, a mounting hole penetrating the upper bottom portion, a second locking piece provided at a lower portion of the through hole, and a nylon cutter around the peripheral portion of the main body portion. A bobbin with two grooves,
A clutch having a plurality of first and second ridges inserted under the through hole of the bobbin and provided with a phase change on the outer peripheral surface;
This clutch, and a spring provided on the upper bottom of the bobbin;
A set screw inserted into the bobbin in which the spring is inserted from the mounting hole in the upper bottom portion for attaching the clutch,
An annular wall provided at the bottom of the dish-shaped cover body, a pair of hook pieces inserted into the hook holes of the housing provided on the annular wall, and a guide for inserting a nylon cutter fitted into the slit A piece, a hole opened for inserting the clutch in the bottom, and a cover provided with a locking groove on the inner peripheral surface of the hole,
The second locking piece is provided between the first locking pieces, and the first locking piece and the second locking piece are provided with different phases in the circumferential direction of the through hole. Thus, when the clutch is pressed, the first protrusion of the clutch moves between the first and second locking pieces, and the bobbin is rotated. A rotating case with a mechanism.
A rotary case provided with a feeding mechanism for a nylon cutter of the mower according to claim 1,
The width of this guide piece is a rotating case provided with a nylon cutter feeding mechanism of a mower that is configured to have the same dimension as the thickness of the annular wall of the two-row structure provided on the cover in the annular direction.
A rotary case provided with a feeding mechanism of a nylon cutter of the mower according to claim 2,
The hook piece provided on the two-walled annular wall of the cover main body is formed with a plurality of notches provided in a part of the outer wall piece of the annular wall. Rotating case provided.
A rotary case provided with a feeding mechanism for a nylon cutter of the mower according to claim 1,
This housing is a rotating case provided with a feeding mechanism of a nylon cutter of a mower having a bowl-shaped housing body, an upper wall of the housing body, and an outer wall depending from the outer periphery of the housing.
A rotary case provided with a feeding mechanism for a nylon cutter of the mower according to claim 1,
The hook piece is a substantially hook piece in a plan view, and a curved surface that is notched in a half-moon shape toward the end side of the substantially hook piece in a rotation direction side thereof to induce rotation. Rotating case equipped with a nylon cutter feeding mechanism of a mower with a structure forming a part.

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