JP2011092078A - Handle structure of high branch-pruning shears - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a handle structure of a pair of high branch-pruning shears, adopting an especially simple structure, turnable to a support cylinder, and usable for a long period. <P>SOLUTION: This handle structure of the high branch-pruning shears includes a pair of the shears on one end of a support cylinder, a handle on the other end, and a rod installed in the inside of the support cylinder and connecting the shears and the handle, and makes the handle turnable to the central axis of the support cylinder. The handle structure of the high branch-pruning shears is such that a peripheral groove is formed on the peripheral surface of a top covering body installed on the handle, a sleeve having an engagement part with elasticity in the diameter direction, projecting from a cylindrical base part is inserted into the top covering body to engage the engagement part with the peripheral groove, and the support cylinder is inserted into the sleeve to fasten a support member installed in the support cylinder to the sleeve by an engagement member. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a handle structure for a high branch cutter, and more particularly to a handle structure for a high branch cutter that is rotatable with respect to a support tube.

  Conventionally, as shown in FIG. 7, a handle 4 provided with a hook (not shown) at one end of the support tube 3 and a grip portion 6 and a lever portion 7 at the other end, and installed inside the support tube 3, In a high branch cutting rod provided with a rod 5 for connecting the handle 4 and allowing the handle 4 to rotate with respect to the axis of the support tube 3, the support tube 3 is attached to the mounted body 8 installed at the end of the handle 4. The screw hole formed in the support tube 3 and the peripheral groove 8a formed on the peripheral surface of the mounted body 8 are matched, and a locking member 11 such as a screw is screwed into the screw hole. A handle structure of a high branch cutting rod that makes the handle 4 rotatable with respect to the heart and prevents the handle 4 from being detached is known (for example, Patent Document 1).

Japanese Utility Model Publication No. 61-175947

  In this structure, as shown in FIG. 8, in order to screw the locking member 11 such as a screw into the support tube 3 formed from a thin cylindrical body, it is necessary to perform burring to increase the thread. there were. However, it is difficult to process hard and high-strength aluminum, etc., and if it is used for a long time, the screw thread may be damaged due to the impact of the handle 4 when it is turned, and the screw may be removed. There is a risk of doing. In order to damage the screw thread, it is necessary to replace the support tube 3 or perform a burring process or the like separately. However, providing a screw hole separately is not preferable in terms of the strength of the support tube 3.

  Therefore, the present invention solves such problems, and relates to a handle structure of a high branch cutting rod, adopting a particularly simple structure and being rotatable with respect to a support cylinder, It is an object of the present invention to provide a handle structure for a high branch cutting rod that can be used for a long time.

  In order to solve the above-mentioned problem, the handle structure of the high branch cutting scissors according to claim 1 of the present invention is installed inside the support tube with a handle at one end of the support tube, a handle at the other end, In the structure of a high-branched scissors handle that has a rod that connects the scissors and the handle, and that allows the handle to rotate with respect to the axis of the support cylinder, a circumferential groove is formed on the peripheral surface of the substrate installed on the handle A sleeve having an engaging portion that protrudes in a radial direction from the base portion of the cylindrical body is fitted into the mounted body, the engaging portion is engaged with the circumferential groove, and the support tube is fitted into the sleeve. The support member and the sleeve installed on the support tube are fixed by the locking member.

  Further, the handle structure of the high-branched scissors according to claim 2 of the present invention is the slit structure of the projecting portion formed by projecting in the radial direction of the base portion in the handle structure of the high-branched scissors according to claim 1. The support member is inserted into the portion, the width of the slit portion is deformed by the locking member, and the support member is held and fixed.

  According to a third aspect of the present invention, there is provided a handle structure for a high branch cutter according to the first or second aspect of the present invention, in which the through hole is formed around the engaging portion in the base portion. Is provided.

In the handle structure of the high branch cutter according to claims 1 and 2 of the present invention, the handle is rotatable with respect to the axis of the support tube in the same manner as the handle structure of the conventional high branch cutter. However, a sleeve is provided with a circumferential groove formed on the circumferential surface of the body to be installed on the handle, and having an engaging portion that protrudes in a radial direction from the base portion of the cylindrical body. And the engagement portion is engaged with the circumferential groove, the support tube is inserted into the sleeve, and the support member and the sleeve installed on the support tube are fixed by the locking member, or projecting in the radial direction of the base portion. The support member is inserted into the slit portion of the protruding portion formed in this way, the width of the slit portion is deformed by the locking member, and the support member is pinched and fixed, so the support tube is located inside the sleeve. Since the engagement portion does not bend in the inner diameter direction of the sleeve, the engagement portion is engaged with the circumferential groove and the sleeve is It can be fixed to the cylinder.
Moreover, since it is not necessary to perform a burring process etc. on a branch cylinder and the thickness of a conventional branch cylinder can be made still thinner, the weight of a branch cylinder can be achieved and the burden on a user can be reduced. it can.

  In the handle structure of the high branch cutting rod according to claim 3 of the present invention, in the handle structure of the high branch cutting rod according to claim 1 or 2, since the through hole is provided around the engaging portion in the base portion, The engaging part can be bent toward the through-hole, and the handle can be pivoted vigorously to absorb the impact at the time of contact even when the engaging part comes into contact with one edge of the circumferential groove. Therefore, the user can comfortably perform the rotation operation. Moreover, since the burden on each component part in a handle can be reduced, a high branch cutting rod can be used for a long time.

It is a partially-omission front view of the Takaeda cutting shear according to the present invention. It is an exploded view of the handle in the high branch cutting shear according to the present invention. It is the (a) AA expanded sectional part of FIG. 2 in the sleeve which comprises the high branch cutting device which concerns on this invention, (b) BB expanded sectional view. It is a front view of the handle in the high branch cutting device according to the present invention. It is CC expanded sectional drawing of FIG. 4 in the high branch cutting shears concerning this invention. FIG. 5 is a DD enlarged cross-sectional view of FIG. It is a front view of the handle in the conventional Takaeda cutting shear. It is the EE expanded sectional view of FIG.

  Hereinafter, a handle structure of a high branch cutting rod according to an embodiment of the present invention will be described with reference to the drawings.

  As shown in FIG. 1, a high branch cutting rod 1 according to the present invention is mainly composed of a rod 2, a support tube 3, a handle 4 and a rod 5, and the basic structure is substantially the same as a conventional high branch cutting rod. It is.

  A scissors 2 that is composed of a fixed blade and a movable blade and cuts branches and the like is installed at one end of the support tube 3 via a fixed portion. The support tube 3 is formed of a long cylindrical body, and is arbitrarily selected from a single-stage type or a multi-stage type via a connecting portion (not shown). It is desirable to adopt. A grip 4 including a grip portion 6 and a lever portion 7 and serving as an operation portion of the high branch cutter 1 is a substrate 8 formed integrally with an end portion of the grip 4 at a position facing the grip portion 6 and the lever portion 7. It is installed in the other end part of the branch cylinder 3 via. Further, the rod 5 is inserted into the inside of the support tube 3 and connects the movable blade constituting the rod 2 and the lever portion 7 constituting the handle 4. The movable blade of the rod 2 attached to the other end can be opened and closed with respect to the fixed blade by operating the lever portion 7 in the handle 4 and moving the connected rod 5 in the axial direction of the support tube 3. It is.

  A handle structure of the high branch cutter 1 that is rotatable with respect to the axis of the support cylinder 3 will be described with reference to FIGS. In the present invention, the handle structure of the high branch cutting rod 1 is as follows: an object 8 formed integrally with the handle 4, a support member 9 installed on the support tube 3, and a sleeve installed on the support tube 3 via the support member 9. 10. As shown in FIGS. 2, 4, and 5, a circumferential groove 8 a of approximately 270 degrees that serves as a rotation range of the handle 4 is formed in the circumferential direction on the peripheral surface of the mounted body 8 that is integrally formed with the handle 4. An insertion hole is formed on the inner side, through which the sleeve 10 is inserted.

  As shown in FIGS. 2 and 6, the support member 9 is made of a thermoplastic resin such as nylon, and has a head portion 9a formed in an inverted T shape and a protrusion 9b extending downward from the head portion 9a. It consists of. Further, the head 9a is provided with a through hole for inserting a locking member 11 to be described later, and is installed by inserting the protrusion 9b into the through hole 3a formed on the peripheral surface of the support tube 3. This produces the effect of preventing the sleeve 10 from rotating.

  As shown in FIGS. 2 to 5, the sleeve 10 is similarly formed of a thermoplastic resin such as nylon, and is formed integrally with the cylindrical base portion 10b and the end portion and has a larger diameter than the base portion 10b. The flange portion 10a. The sleeve 10 is formed with a through hole 10g through which the support tube 3 can be inserted from one end to the other end in the longitudinal direction. Further, as shown in FIGS. 3 and 6, the flange portion 10 a is provided with a protrusion 10 d that protrudes in the radial direction, and extends from the protrusion 10 d to the base portion 10 b in the longitudinal direction of the sleeve 10. A slit portion 10e is provided. Furthermore, the projection 10d is provided with an attachment hole 10f for attaching the locking member 11 so as to be orthogonal to the slit 10e. In addition, the base portion 10b is formed with an engaging portion 10c that has elasticity and protrudes in the radial direction, and a through hole 10h having the same shape as the outer shape of the engaging portion 10c is formed around the base portion 10b. As shown in FIG. 3, the angle formed by the engaging portion 10c and the protruding portion 10d is approximately 90 degrees.

  The components of the handle 4 of the high branch cutter 1 constructed as described above are assembled as shown in FIGS. 2 and 4 to 6. First, the sleeve 10 is fitted into the body 8 of the handle 4. Specifically, the engaging portion 10c having elasticity and projecting in the radial direction is engaged with the circumferential groove 8a while being bent in the inner diameter direction. In the engaged state, the flange portion 10 a comes into contact with the end surface of the mounted body 8.

  Next, the protrusion 9b of the support member 9 is fitted into the through hole 3a of the support tube 3, and the head portion 9a is protruded from the support tube 3 in the radial direction. Thereafter, the support tube 3 is inserted into the insertion hole 10g of the sleeve 10 engaged with the mounted body 8, and the head portion 9a of the support member 9 is inserted into the slit portion 10e of the projection 10d in the flange portion 10a. In a state where the through hole of the support member 9 and the mounting hole 10f of the sleeve 10 are matched, the locking member 11 such as a screw is attached, the width of the elastic slit portion 10e is deformed, and the head portion 9a is held. To fix them together. In this state, as shown in FIG. 5, since the support tube 3 is located inside the sleeve 10, the engaging portion 10 c does not bend in the inner diameter direction. Thereby, the sleeve 10 is fixed to the shaft center of the support tube 3 so as not to be rotatable in a state where the engaging portion 10 c is engaged with the circumferential groove 8 a.

  As shown in FIGS. 4 to 6, the handle 4 fixed to the support tube 3 in this manner is in a state where the engaging portion 10c of the sleeve 10 is engaged with the circumferential groove 8a, and therefore along the circumferential groove 8a. The handle 4 can be rotated.

  As described above, according to the handle structure of the high branch cutting rod 1 according to the embodiment of the present invention described above, the handle 4 is fixed to the support tube 3 via the support member 9 and the sleeve 10, so that the support tube 3 is subjected to burring processing or the like. There is no need to apply, and the thickness of the conventional support tube 3 can be further reduced. Thereby, weight reduction of the support tube 3 can be achieved and the burden on a user can be reduced.

  Further, since the through hole 10h is provided around the engaging portion 10c in the sleeve 10, the handle 4 is vigorously rotated, and the engaging portion 10c comes into contact with one end edge of the circumferential groove 8a. In addition, the engaging portion 10c can be bent toward the through hole 10h. Thereby, since the impact by contact | abutting with the engaging part 10c and the one end edge part of the circumferential groove 8a at the time of rotation can be absorbed, while a user can perform rotation operation comfortably, the handle 4 The burden on each component can be reduced. By these, the Takaeda cutting shear 1 can be used over a long period of time.

  Furthermore, in the above embodiment, the angle formed by the engaging portion 10c and the protruding portion 10d in the sleeve 10 is not limited to approximately 90 degrees, and the rotation range of the mounted body 8 in the handle 4 is also limited to approximately 270 degrees. It can be changed as appropriate.

  Moreover, without providing the flange part 10a in the sleeve 10, the protrusion part 10d provided in the flange part 10a can also be made to protrude from the peripheral surface of the base part 10b. The protrusion 10d is desirably provided at the end of the base 10b, but may be provided on any peripheral surface. In such a case, the protruding portion 10 d protruding from the base portion 10 b comes into contact with the end surface of the mounted body 8 in the handle 4.

DESCRIPTION OF SYMBOLS 1 High branch cutting rod 2 鋏 3 Support tube 3a Through-hole 4 Handle 5 Rod 6 Grip part 7 Lever part 8 Covered body 8a Circumferential groove 9 Support member 9a Head part 9b Projection part 10 Sleeve 10a Flange part 10b Base part 10c Engagement part 10d Projection 10e Slit 10f Mounting hole 10g Insertion hole 10h Through-hole 11 Locking member

Claims (3)

A high-branch scissor that has a rod at one end of the branch, a handle at the other end, and a rod that connects the rod and the handle. In the handle structure of
A circumferential groove is formed on the peripheral surface of the substrate to be installed on the handle,
A sleeve provided with an engaging portion that protrudes in a radial direction from the base portion of the cylindrical body is fitted into the mounted body, and the engaging portion is engaged with the circumferential groove,
A handle structure for a high branch cutting rod, wherein a support tube is fitted into a sleeve, and a support member and a sleeve installed on the support tube are fixed by a locking member.   The support member is inserted into a slit portion of a protrusion formed to protrude in the radial direction of the base portion, the width of the slit portion is deformed by the locking member, and the support member is held and fixed. The handle structure of Takaeda-kiri.   The handle structure of a high branch cutting rod according to claim 1 or 2, wherein a through hole is provided around the engaging portion in the base portion.

Images