阅读说明：本技术 园艺用修剪机 (Pruning machine for gardening ) 是由 北原幹大 沓名知之 岩本望 太田智之 于 2021-04-19 设计创作，主要内容包括：本发明涉及园艺用修剪机。在抑制刀片承受的滑动阻力的同时抑制因刀片的往复运动而产生的振动。园艺用修剪机包括：壳体；原动机；引导杆；转换机构,其将原动机的旋转运动转换为第1方向上的直线运动；刀片,其与转换机构的直线运动相应地相对于引导杆在第1方向上相对地进行往复运动,该刀片具有多个长孔；以及多个引导构件,其分别配置于多个长孔。多个长孔包括至少1个与多个引导构件中的连结于壳体的引导构件相对应的第1长孔。长孔与引导构件的组合包括：第1组合,其抑制刀片的往复运动的滑动阻力；以及第2组合,其抑制因刀片的往复运动引起的振动。第1长孔与引导构件的组合中的至少1个组合是第2组合。(The present invention relates to a pruning machine for gardening. The vibration generated by the reciprocating motion of the blade is suppressed while suppressing the sliding resistance received by the blade. The pruning machine for horticulture includes: a housing; a prime mover; a guide rod; a conversion mechanism that converts a rotational motion of the prime mover into a linear motion in the 1 st direction; a blade reciprocating relatively in a 1 st direction with respect to the guide rod in accordance with the linear motion of the conversion mechanism, the blade having a plurality of long holes; and a plurality of guide members respectively disposed in the plurality of elongated holes. The plurality of long holes include at least 1 st long hole corresponding to a guide member coupled to the housing among the plurality of guide members. The combination of the elongated hole and the guide member includes: a 1 st combination that suppresses sliding resistance of reciprocation of the blade; and the 2 nd combination, it suppresses the vibration caused by reciprocating motion of the blade. At least 1 combination of the 1 st long hole and the guide member is the 2 nd combination.)

1. A pruning machine for gardening, wherein,

the pruning machine for horticulture includes:

a housing;

a motor disposed inside the housing;

a guide rod extending from the housing;

a conversion mechanism that converts a rotational motion of the prime mover into a linear motion in a 1 st direction;

a blade that reciprocates in the 1 st direction relative to the guide rod in accordance with the linear motion of the conversion mechanism, the blade having a plurality of long holes extending in the 1 st direction; and

a plurality of guide members, respectively disposed in the plurality of long holes of the blade, for guiding the relative reciprocating motion of the blade,

the plurality of long holes include:

at least 1 st long hole corresponding to a guide member coupled to the housing among the plurality of guide members; and

at least 12 nd long hole corresponding to a guide member coupled to the guide bar among the plurality of guide members,

the combination of the elongated hole and the guide member includes:

a 1 st combination that suppresses sliding resistance of the reciprocating motion of the blade; and

a 2 nd combination that suppresses vibration caused by the reciprocating motion of the blade,

at least 1 combination of the 1 st long hole and the guide member is the 2 nd combination.

2. The pruning machine for horticulture according to claim 1,

the combination of the 1 st long hole disposed at a position closest to the housing-side end portion of the blade and the guide member is the 2 nd combination.

3. The pruning machine for horticulture according to claim 1 or 2, wherein,

the combination of the 2 nd long hole and the guide member includes the 2 nd combination.

4. The pruning machine for horticulture according to any one of claims 1 to 3, wherein,

the plurality of guide members includes:

a 1 st guide member that suppresses a sliding resistance of the reciprocating motion of the blade; and

a 2 nd guide member that suppresses vibration caused by the reciprocating motion of the blade,

the guide member constituting the 1 st combination is the 1 st guide member,

the guide member constituting the 2 nd group is the 2 nd guide member.

5. The pruning machine for horticulture according to claim 4,

the 1 st guide member has a circular sectional shape,

the 2 nd guide member has a polygonal sectional shape.

6. The pruning machine for horticulture according to any one of claims 1 to 3, wherein,

the long hole has:

a 1 st inner side surface extending in the 1 st direction; and

a 2 nd inner side surface extending in the 1 st direction and opposed to the 1 st inner side surface,

in the 1 st combination, a total value of the interval between the guide member and the 1 st inner surface and the interval between the guide member and the 2 nd inner surface is a 1 st interval,

in the 2 nd combination, a total value of the interval between the guide member and the 1 st inner side surface and the interval between the guide member and the 2 nd inner side surface is a 2 nd interval smaller than the 1 st interval.

7. The pruning machine as claimed in any one of claims 1 to 6, wherein,

the prime mover is an electric motor.

8. The pruning machine for horticulture according to claim 7,

the gardening trimmer further includes a battery pack that is attachable to and detachable from the housing, and supplies electric power to the electric motor and is chargeable.

9. The pruning machine as claimed in any one of claims 1 to 8, wherein,

the gardening trimmer further comprises a handle which is arranged on the shell and is held by an operator.

Technical Field

The technology disclosed in the present specification relates to a pruning machine for gardening.

Background

Patent document 1 discloses a trimmer for gardening. The gardening trimmer includes a housing, a guide bar, a motor disposed inside the housing, a conversion mechanism for converting a rotational motion of the motor into a linear motion in a 1 st direction, a blade, and a plurality of guide members. The blade, which has a plurality of long holes extending in the 1 st direction, relatively reciprocates in the 1 st direction with respect to the guide rod in accordance with the linear motion of the conversion mechanism. The guide member is disposed in each of the plurality of elongated holes of the blade, and guides the relative reciprocating motion of the blade.

Documents of the prior art

Patent document

Patent document 1: japanese laid-open patent publication No. 2001-116021

Disclosure of Invention

Problems to be solved by the invention

In the above-described gardening trimmer, when the guide member abuts against the inner side surface of the long hole, the sliding resistance received by the blade is large, but the interval between the guide member and the inner side surface of the long hole is small, so that the vibration generated by the reciprocation of the blade can be suppressed. On the other hand, in the case where the guide member does not abut against the inner side surface of the long hole, the sliding resistance received by the blade is suppressed, but since the interval between the guide member and the inner side surface of the long hole is large, vibration due to the reciprocation of the blade is generated. In the present specification, a technique is disclosed that can suppress vibration generated by reciprocation of a blade while suppressing sliding resistance received by the blade.

Means for solving the problems

The present specification discloses a pruning machine for gardening. The pruning machine for horticulture includes: a housing; a motor disposed inside the housing; a guide rod extending from the housing; a conversion mechanism that converts a rotational motion of the prime mover into a linear motion in the 1 st direction; a blade that reciprocates in a 1 st direction relative to the guide rod in accordance with the linear motion of the conversion mechanism, the blade having a plurality of long holes extending in the 1 st direction; and a plurality of guide members, which are respectively arranged on the plurality of long holes of the blade and guide the relative reciprocating motion of the blade. The plurality of long holes include: at least 1 st long hole corresponding to a guide member coupled to the housing among the plurality of guide members; and at least 12 nd long hole corresponding to a guide member coupled to the guide rod among the plurality of guide members. The combination of the elongated hole and the guide member includes: a 1 st combination that suppresses sliding resistance of reciprocation of the blade; and the 2 nd combination, it suppresses the vibration caused by reciprocating motion of the blade. At least 1 combination of the 1 st long hole and the guide member is the 2 nd combination.

When the conversion mechanism converts the rotational motion of the motor into the linear motion, the vibration in the direction orthogonal to the shaft of the motor and the 1 st direction is transmitted to the blade. Therefore, when the combination of the 1 st long hole corresponding to the guide member coupled to the housing and the guide member is the 1 st combination, the vibration of the blade cannot be sufficiently suppressed. In the above-described structure, since at least 1 combination of the 1 st long hole and the guide member is the 2 nd combination, the vibration of the blade can be suppressed. Further, since the combination of the long hole and the guide member includes the 1 st combination, the sliding resistance of the reciprocating motion of the blade can be suppressed.

Drawings

Fig. 1 is a perspective view of a gardening trimmer 2 according to embodiment 1.

Fig. 2 is a sectional view of the gardening trimmer 2 of the first embodiment 1.

Fig. 3 is an exploded view showing the configuration of a pair of blades 16, 18 of embodiment 1.

Fig. 4 is a plan view showing the elongated hole 56 and the 1 st guide member 72 of embodiment 1.

Fig. 5 is a plan view showing the elongated hole 56 and the 2 nd guide member 74 of the 1 st embodiment.

Fig. 6 is a diagram showing the vibration characteristics of the gardening trimmer 2 of each specification.

Fig. 7 is a plan view showing the 3 rd long hole 158 and the 1 st guide member 72 of the 2 nd embodiment.

Description of the reference numerals

2. A pruning machine for gardening; 10. a main body; 12. a switching mechanism; 14. a guide rod; 16. 1, a blade; 16a, 18a, a tip; 18. a 2 nd blade; 22. a housing; 24. a prime mover; 38. a crank cam; 40. 1, a connecting rod; 42. a 2 nd connecting rod; 46. 50, part 1; 48. 52, part 2; 56. 56a, 56b, 56c, 56d, 56e, 56f, 56g, 56h, slot; 58. a 1 st long hole; 58a, 60a, 158a, medial side 1; 58b, 60b, 160b, medial side 2; 60. a 2 nd long hole; 70. a guide member; 72. 1 st guide member; 74. a 2 nd guide member; 74a, outer side 1; 74b, outer side 2; 80. a 1 st bolt; 82. a 2 nd bolt; 86. a nut; 90. combination No. 1; 92. 192, combination 2; 158. a 3 rd long hole; BP, battery pack.

Detailed Description

Representative, non-limiting, specific examples of the present invention are described in detail below with reference to the accompanying drawings. This detailed description is intended merely to show those skilled in the art the details of preferred examples for carrying out the invention, and is not intended to limit the scope of the invention. Furthermore, the disclosed additional features and solutions can be used together with or independently of other features, solutions to provide a further improved pruning machine for horticulture.

In addition, combinations of features and steps disclosed in the following detailed description are not essential to practice of the present invention in the broadest sense, and are provided only for specifically describing representative specific examples of the present invention. In addition, various features of the following representative specific examples, and various features of the examples described in the claims, in order to provide additional and useful embodiments of the present invention, it is not necessary to combine the above features in the specific examples described herein or in the order in which they are listed.

All features described in the specification and/or claims are intended to be disclosed separately and independently of each other as limitations on the specific matters recited in the disclosure of the original application and the scope of the claims, independently of the structure of the features described in the embodiments and/or claims. Further, all the descriptions of the numerical ranges and groups or clusters are intended to disclose the intermediate structures thereof as limitations to the specific matters described in the disclosure of the original application and the claims.

In one or more embodiments, the combination of the 1 st long hole disposed at the position closest to the housing-side end portion of the blade and the guide member may be the 2 nd combination.

The vibration of the entire blade can be suppressed as the vibration in the direction orthogonal to the shaft of the motor and the 1 st direction transmitted from the conversion mechanism to the blade is suppressed at the position closer to the conversion mechanism. In the above configuration, the 1 st long hole disposed at the position closest to the housing-side end portion of the blade is disposed at the position closest to the conversion mechanism. Further, the combination of the 1 st long hole arranged at the position closest to the case-side end of the blade and the guide member is the 2 nd combination. This can further suppress the vibration of the blade caused by the reciprocating motion of the blade.

In one or more embodiments, the combination of the No. 2 long hole and the guide member may include the No. 2 combination.

In the above-described structure, the combination of the 1 st long hole and the guide member includes the 2 nd combination, and the combination of the 2 nd long hole and the guide member includes the 2 nd combination. This can suppress the vibration of the blade caused by the reciprocating motion of the blade.

In one or more embodiments, the plurality of guide members may include: a 1 st guide member that suppresses sliding resistance of the reciprocating movement of the blade; and a 2 nd guide member that suppresses vibration caused by the reciprocating motion of the blade. The guide member constituting the 1 st group may be a 1 st guide member, and the guide member constituting the 2 nd group may be a 2 nd guide member.

In the above configuration, the configuration of the guide member can be changed to suppress the vibration of the blade due to the reciprocation of the blade and also suppress the sliding resistance of the reciprocation of the blade.

In one or more embodiments, the 1 st guide member may have a circular cross-sectional shape, and the 2 nd guide member may have a polygonal cross-sectional shape.

In the above configuration, the shape of the guide member can be changed to suppress the vibration of the blade due to the reciprocation of the blade and also suppress the sliding resistance of the reciprocation of the blade.

In one or more embodiments, the elongated hole may have: a 1 st inner side surface extending in a 1 st direction; and a 2 nd inner side surface extending in the 1 st direction and opposed to the 1 st inner side surface. In combination No. 1, the total value of the distance between the guide member and the 1 st inner surface and the distance between the guide member and the 2 nd inner surface may be the 1 st distance. In the combination 2, the total value of the distance between the guide member and the 1 st inner surface and the distance between the guide member and the 2 nd inner surface may be the 2 nd distance smaller than the 1 st distance.

In the above-described configuration, it is possible to suppress the sliding resistance of the reciprocating motion of the blade while suppressing the vibration of the blade due to the reciprocating motion of the blade by adjusting the 1 st interval associated with the long hole and the guide member constituting the 1 st combination and the 2 nd interval associated with the long hole and the guide member constituting the 2 nd combination.

In one or more embodiments, the prime mover may be an electric motor.

In the case where the prime mover is an engine, the engine itself generally vibrates more than other vibration factors. Therefore, the vibration felt by the operator's body is determined according to the magnitude of the vibration of the engine itself. Thus, even if the vibration transmitted from the conversion mechanism to the blade is suppressed, it is often difficult to suppress the vibration felt by the operator's body. On the other hand, in the case where the motor is an electric motor having smaller vibration than the engine, the vibration transmitted from the conversion mechanism to the blade becomes a factor of the vibration. Therefore, the vibration felt by the operator's body is determined according to the magnitude of the vibration transmitted from the conversion mechanism to the blade. In the above configuration, the vibration of the blade can be sufficiently suppressed by suppressing the vibration transmitted from the conversion mechanism to the blade, and the vibration felt by the body of the operator can be sufficiently suppressed.

In one or more embodiments, the gardening trimmer may further include a battery pack that is detachable from the housing, and that supplies electric power to the electric motor and is chargeable.

In the above configuration, it is not necessary to provide a power supply line to the gardening trimmer, and the usability of the gardening trimmer can be optimized.

In one or more embodiments, the gardening trimmer may further include a handle provided in the housing and held by the operator.

In the above configuration, the convenience of use of the gardening trimmer can be optimized.

(embodiment 1)

A gardening trimmer 2 according to an embodiment is described with reference to fig. 1 to 6. The gardening trimmer 2 is a gardening tool mainly used for trimming hedges and trees, and is also called a hedge trimmer. As shown in fig. 1 to 3, the gardening trimmer 2 includes a main body 10, a conversion mechanism 12, a guide bar 14, and a pair of blades 16, 18, and the pair of blades 16, 18 includes a 1 st blade 16 and a 2 nd blade 18. In the following, in a state where the gardening trimmer 2 is placed on a placement surface P such as the ground, a direction perpendicular to the placement surface P is referred to as a vertical direction, a longitudinal direction when the pair of blades 16 and 18 are projected on the placement surface P is referred to as a front-rear direction, and a direction perpendicular to the vertical direction and the front-rear direction is referred to as a left-right direction.

As shown in fig. 2, the main body 10 includes a housing 22 and a prime mover 24. The case 22 is configured to be attachable to and detachable from the battery pack BP. That is, the gardening trimmer 2 is a cordless electric tool using the battery pack BP as a power source. In the modification, the gardening trimmer 2 may be connected to an external power source via a power cord.

As shown in fig. 1, the housing 22 is provided with a front handle 28 and a rear handle 30. The front handle 28 is located at the front of the housing 22 and the rear handle 30 is located at the rear of the housing 22. The front handle 28 is held by one hand of the operator and the rear handle 30 is held by the other hand of the operator. This enables the operator to stably hold the gardening trimmer 2.

The handle 30 is provided with a trigger 32 and an unlocking lever 34 on the rear side. In the event that the operator does not depress the release lever 34, the trigger 32 is mechanically locked and the operator cannot depress the trigger 32. This can suppress an erroneous operation of the flip-flop 32. On the other hand, when the operator presses the lock release lever 34, the mechanical lock of the trigger 32 is released, and the operator can press the trigger 32.

The guide bar 14 is fixed to the front of the housing 22. The guide bar 14 has a thin plate shape extending in the front-rear direction. The guide bar 14 supports a pair of blades 16, 18.

As shown in fig. 2, the motor 24 is disposed inside the housing 22. The prime mover 24 is, for example, an electric motor. In the modification, the motor 24 may be an engine. When the trigger 32 is pressed in a state where the lock release lever 34 is pressed, the prime mover 24 is driven.

The conversion mechanism 12 is a link-type conversion mechanism. The shift mechanism 12 includes a crank-cam 38, a 1 st connecting rod 40, and a 2 nd connecting rod 42. The crank cam 38 is rotated by rotating the shaft of the prime mover 24 extending in the up-down direction. The 1 st and 2 nd connecting rods 40, 42 are coupled to the crank-cam 38. Further, the 1 st connecting rod 40 is connected to the 1 st blade 16, and the 2 nd connecting rod 42 is connected to the 2 nd blade 18. The 1 st connecting rod 40 converts the rotational motion of the crank-cam 38 into the reciprocating motion of the 1 st blade 16 in the forward and backward directions. Further, the 2 nd connecting rod 42 converts the rotational motion of the crank cam 38 into the reciprocating motion of the 2 nd blade 18 in the forward and backward directions.

The 1 st blade 16 and the 2 nd blade 18 overlap the guide bar 14 in the up-down direction. Further, the 1 st blade 16 and the 2 nd blade 18 overlap in the up-down direction. The 1 st blade 16 and the 2 nd blade 18 extend in the front-rear direction.

As shown in fig. 3, the 1 st blade 16 includes a 1 st portion 46 and a 2 nd portion 48. The 1 st portion 46 is coupled to the 1 st connecting rod 40. The 1 st portion 46 partially overlaps the housing 22 in the up-down direction. The 2 nd portion 48 is disposed on the front side of the 1 st portion 46. The 2 nd portion 48 is provided with a plurality of cutting edges 16a arranged in the front-rear direction.

The 2 nd blade 18 includes a 1 st portion 50 and a 2 nd portion 52. The 1 st portion 50 is coupled to the 2 nd connecting rod 42. In the up-down direction, the 1 st portion 50 of the 2 nd blade 18 coincides with the 1 st portion 46 of the 1 st blade 16. The 2 nd portion 52 is provided with a plurality of cutting edges 18a arranged in the front-rear direction. In the up-down direction, the 2 nd portion 52 of the 2 nd blade 18 coincides with the 2 nd portion 48 of the 1 st blade 16. In the gardening trimmer 2, the prime mover 24 is driven when the operator presses the trigger 32, and the 2 nd blade 18 reciprocates in the opposite phase to the 1 st blade 16. Thus, the cutting edge 16a of the 1 st blade 16 and the cutting edge 18a of the 2 nd blade 18 repeatedly intersect with each other, and cut branches and leaves of a hedge, for example.

The 1 st blade 16 and the 2 nd blade 18 each have a plurality of (8 in the present embodiment) long holes 56. Since the plurality of long holes 56 of the 1 st blade 16 have the same configuration as the plurality of long holes 56 of the 2 nd blade 18, the plurality of long holes 56 of the 1 st blade 16 will be described below.

The plurality of long holes 56 are arranged in a row in the front-rear direction. The plurality of elongated holes 56 extend in the front-rear direction, respectively. The plurality of elongated holes 56 penetrate the 1 st blade 16 in the thickness direction (in the present embodiment, the vertical direction). Hereinafter, the plurality of elongated holes 56 are sometimes referred to as elongated holes 56a, 56b, 56c, 56d, 56e, 56f, 56g, and 56h in order from the rear end portion side of the 1 st blade 16 on the housing 22 side. The elongated hole 56a is disposed closest to the motor 24, and the elongated hole 56h is disposed farthest from the motor 24.

The plurality of elongated holes 56 includes at least 1 (two in the present embodiment) 1 st elongated hole 58 and at least 1 (6 in the present embodiment) 2 nd elongated hole 60. The 1 st slot 58 is disposed in the 1 st portion 46, and the 2 nd slot 60 is disposed in the 2 nd portion 48. As shown in fig. 4 and 5, the 1 st long hole 58 has a 1 st inner side surface 58a and a 2 nd inner side surface 58 b. The 1 st and 2 nd inner side surfaces 58a and 58b are opposed to each other. The 1 st inner side surface 58a and the 2 nd inner side surface 58b extend in the front-rear direction.

The 2 nd long hole 60 has the same configuration as the 1 st long hole 58. That is, the 2 nd elongated hole 60 has a 1 st inner surface 60a and a 2 nd inner surface 60 b. The 1 st medial surface 60a and the 2 nd medial surface 60b are opposite to each other. The 1 st and 2 nd inner side surfaces 60a and 60b extend in the front-rear direction.

As shown in fig. 3, the gardening trimmer 2 includes a plurality of (8 in the present embodiment) guide members 70. The guide member 70 guides the reciprocating motion of the 1 st blade 16 and the 2 nd blade 18 in the front-rear direction. A part (two in the present embodiment) of the guide member 70 is disposed in the 1 st long hole 58 of the 1 st blade 16 and the 1 st long hole 58 of the 2 nd blade 18 which are vertically overlapped. As shown in fig. 2, a part of the guide member 70 is coupled to the guide bar 14 and the front of the housing 22 by a 1 st bolt 80. The 1 st long hole 58 of the 1 st blade 16 and the 1 st long hole 58 of the 2 nd blade 18 correspond to a guide member 70 coupled to the housing 22. As shown in fig. 3, the remaining (6 in the present embodiment) guide members 70 are disposed in the 2 nd long hole 60 of the 1 st blade 16 and the 2 nd long hole 60 of the 2 nd blade 18 that are vertically overlapped. The remaining guide member 70 is coupled only to the guide rod 14 by the 2 nd bolt 82 and the nut 86. The 2 nd long hole 60 of the 1 st blade 16 and the 2 nd long hole 60 of the 2 nd blade 18 correspond to a guide member 70 coupled to the guide rod 14.

As shown in fig. 4 and 5, the guide member 70 includes a 1 st guide member 72 and a 2 nd guide member 74. As shown in fig. 4, the 1 st guide member 72 has a circular sectional shape. The diameter of the outer peripheral surface of the 1 st guide member 72 is smaller than the distance L1 between the 1 st inner surface 58a and the 2 nd inner surface 58b of the 1 st long hole 58 and the distance L1 between the 1 st inner surface 60a and the 2 nd inner surface 60b of the 2 nd long hole 60. That is, the total value of the distance W1 between the 1 st inner surface 58a, 60a and the 1 st guide member 72 and the distance W2 between the 2 nd inner surface 58b, 60b and the 1 st guide member 72 is greater than zero. The total value of the interval W1 and the interval W2 is, for example, 0.3mm or less.

As shown in fig. 5, the 2 nd guide member 74 has a polygonal sectional shape, and has a quadrangular shape in the present embodiment. The 2 nd guide member 74 has a 1 st outer side surface 74a and a 2 nd outer side surface 74 b. The 1 st outer surface 74a faces the 1 st inner surface 58a of the 1 st elongated hole 58 or the 1 st inner surface 60a of the 2 nd elongated hole 60. The 2 nd outer surface 74b faces the 2 nd inner surface 58b of the 1 st long hole 58 or the 2 nd inner surface 60b of the 2 nd long hole 60. When the 2 nd guide member 74 is fixed by the bolts 80 and 82, the 2 nd guide member 74 may be fixed in a posture inclined with respect to the front-rear direction. Thus, the 1 st outer surface 74a abuts the 1 st inner surface 58a of the 1 st elongated hole 58 or the 1 st inner surface 60a of the 2 nd elongated hole 60, and the 2 nd outer surface 74b abuts the 2 nd inner surface 58b of the 1 st elongated hole 58 or the 2 nd inner surface 60b of the 2 nd elongated hole 60.

As shown in fig. 4 and 5, the combination of the long hole 56 and the guide member 70 includes the 1 st combination 90 and the 2 nd combination 92. As shown in fig. 4, the 1 st group 90 is composed of the long hole 56 (the 1 st long hole 58 or the 2 nd long hole 60) and the 1 st guide member 72. As described above, when the 1 st guide member 72 is disposed in the elongated hole 56, the total value of the interval W1 and the interval W2 is greater than zero. Thus, even if the pair of blades 16, 18 reciprocate relatively in the front-rear direction, the 1 st guide member 72 does not easily come into contact with the 1 st inner side surfaces 58a, 60a and the 2 nd inner side surfaces 58b, 60b of the elongated hole 56, and the sliding resistance of the pair of blades 16, 18 can be suppressed. On the other hand, when the pair of blades 16 and 18 reciprocate in the front-rear direction, the pair of blades 16 and 18 easily move in the left-right direction, and it is difficult to suppress the left-right vibration of the pair of blades 16 and 18.

Further, as shown in fig. 5, the 2 nd group 92 is constituted by the long hole 56 (the 1 st long hole 58 or the 2 nd long hole 60) and the 2 nd guide member 74. As described above, when the 2 nd guide member 74 is disposed in the elongated hole 56, the 2 nd guide member 74 abuts the 1 st inner side surfaces 58a, 60a and the 2 nd inner side surfaces 58b, 60b of the elongated hole 56. Thus, even if the pair of blades 16 and 18 reciprocate relatively in the front-rear direction, the pair of blades 16 and 18 are not easily moved in the left-right direction, and the left-right direction vibration of the pair of blades 16 and 18 can be suppressed. On the other hand, since the pair of blades 16 and 18 perform relative movement in the front-rear direction in a state where the 2 nd guide member 74 abuts against the 1 st inner side surfaces 58a and 60a and the 2 nd inner side surfaces 58b and 60b of the elongated hole 56, it is difficult to suppress sliding resistance of the pair of blades 16 and 18.

As shown in fig. 3, in the present embodiment, the 2 nd guide member 74 is disposed in the long hole 56a located at the position closest to the rear end portions of the pair of blades 16, 18 and the long hole 56h located at the position farthest from the rear end portions of the pair of blades 16, 18. Further, the 1 st guide member 72 is disposed in the elongated holes 56b, 56c, 56d, 56e, 56f, 56g located between the elongated holes 56a, 56 h. That is, the 2 nd group 92 is disposed corresponding to the elongated holes 56a, 56h, and the 1 st group 90 is disposed corresponding to the elongated holes 56b, 56c, 56d, 56e, 56f, 56 g. Hereinafter, the arrangement of the 1 st combination 90 and the 2 nd combination 92 of the present embodiment is referred to as specification 1.

Fig. 6 shows results obtained by comparing the gardening trimmer 2 of specification 1 of the present embodiment and the gardening trimmers of specifications 5, 6, and 7 of comparative examples with respect to the vibration characteristics and the sliding resistance of the pair of blades 16 and 18. In the gardening trimmer of the comparative example, specification 5, the 2 nd guide member 74 is disposed in all of the elongated holes 56a, 56b, 56c, 56d, 56e, 56f, 56g, and 56h of the pair of blades 16 and 18. Accordingly, in the gardening trimmer of the specification 5, since the 8 nd 2 nd guide members 74 abut against the 1 st inner side surfaces 58a, 60a and the 2 nd inner side surfaces 58b, 60b of the elongated hole 56, the vibration in the left-right direction of the pair of blades 16, 18 caused by the relative reciprocating motion of the pair of blades 16, 18 can be suppressed. However, in the gardening trimmer of the specification 5, the sliding resistance of the pair of blades 16 and 18 due to the relative reciprocating movement of the pair of blades 16 and 18 is large. In the gardening trimmer of the comparative example, specification 6, the 1 st guide member 72 is disposed in all of the elongated holes 56a, 56b, 56c, 56d, 56e, 56f, 56g, and 56h of the pair of blades 16 and 18. Thus, in the gardening trimmer of the specification 6, since the 8 1 st guide members 72 are not easily brought into contact with the 1 st inner side surfaces 58a, 60a and the 2 nd inner side surfaces 58b, 60b of the elongated hole 56, the sliding resistance of the pair of blades 16, 18 due to the relative reciprocating motion of the pair of blades 16, 18 is small. However, in the gardening trimmer of the standard 6, the left-right direction vibration of the pair of blades 16 and 18 due to the relative reciprocating motion of the pair of blades 16 and 18 is large. In the gardening trimmer of the comparative example, specification 7, the 1 st guide member 72 is disposed in the 1 st elongated hole 58 and the 2 nd guide member 74 is disposed in the 2 nd elongated hole 60 of the pair of blades 16 and 18. In the gardening trimmer of the specification 7, the sliding resistance of the pair of blades 16, 18 due to the relative reciprocating motion of the pair of blades 16, 18 is smaller than that in the gardening trimmer of the specification 5 and is larger than that in the gardening trimmer of the specification 6. In the gardening trimmer of the specification 7, the 1 st guide member 72 is not likely to abut against the 1 st inner side surfaces 58a, 60a and the 2 nd inner side surfaces 58b, 60b of the elongated hole 56 in the 1 st elongated hole 58 disposed at a position close to the motor 24, and therefore, the left-right direction vibration of the pair of blades 16, 18 caused by the relative reciprocating motion of the pair of blades 16, 18 is large and is about the same as the left-right direction vibration in the gardening trimmer of the specification 6. In contrast, in the gardening trimmer 2 of the specification 1 of the present embodiment, the 2 nd guide member 74 abuts against the 1 st inner side surfaces 58a, 60a and the 2 nd inner side surfaces 58b, 60b of the elongated holes 56a, 56h at two positions, the elongated hole 56a disposed at the position closest to the motor 24 and the elongated hole 56h disposed at the position farthest from the motor 24. Thus, even when the 1 st guide member 72 is disposed in the elongated holes 56b, 56c, 56d, 56e, 56f, and 56g, the right and left vibrations of the pair of blades 16 and 18 caused by the relative reciprocating motion of the pair of blades 16 and 18 can be suppressed to the same extent as the right and left vibrations in the gardening trimmer of the specification 5 in the gardening trimmer 2 of the specification 1. In the gardening trimmer 2 of the specification 1, the 6 first guide members 72 are not easily brought into contact with the 1 st inner side surfaces 58a, 60a and the 2 nd inner side surfaces 58b, 60b of the elongated hole 56, and therefore, the sliding resistance of the pair of blades 16, 18 due to the relative reciprocating motion of the pair of blades 16, 18 is greater than that of the gardening trimmer of the specification 6, but is smaller than that of the gardening trimmers of the specifications 5 and 7.

In the present embodiment, the gardening trimmer 2 includes: a housing 22; a motor 24 disposed inside the housing 22; a guide rod 14 extending from the housing 22; a conversion mechanism 12 that converts the rotational motion of the prime mover 24 into a linear motion in the 1 st direction (i.e., the front-rear direction); blades 16, 18 that reciprocate relative to the guide rod 14 in the front-rear direction in accordance with the linear motion of the conversion mechanism 12, the blades 16, 18 having a plurality of long holes 56 extending in the front-rear direction; and a plurality of guide members 70 which are disposed in the plurality of elongated holes 56 of the blades 16, 18, respectively, and which guide the relative reciprocating movement of the blades 16, 18. The plurality of elongated holes 56 includes at least 1 st elongated hole 58 corresponding to one of the plurality of guide members 70 coupled to the housing 22 and at least 1 nd elongated hole 60 corresponding to one of the plurality of guide members 70 coupled to the guide rod 14. The combination of the long hole 56 and the guide member 70 includes the 1 st combination 90 that suppresses the sliding resistance of the reciprocating motion of the blades 16, 18 and the 2 nd combination 92 that suppresses the vibration caused by the reciprocating motion of the blades 16, 18. At least 1 combination of the 1 st long hole 58 and the guide member 70 is a 2 nd combination 92. In this configuration, the conversion mechanism 12 transmits the vibration in the left-right direction orthogonal to the axis and the front-rear direction of the motor 24 to the blades 16 and 18. Therefore, when the combination of the 1 st long hole 58 corresponding to the guide member 70 coupled to the housing 22 and the guide member 70 is the 1 st combination 90, the left-right direction vibration of the blades 16 and 18 cannot be sufficiently suppressed. In the above-described configuration, since at least 1 combination of the 1 st long hole 58 and the guide member 70 is the 2 nd combination 92, the left-right direction vibration of the blades 16 and 18 can be suppressed. Further, since the combination of the long hole 56 and the guide member 70 includes the 1 st combination 90, the sliding resistance of the reciprocating motion of the blades 16, 18 can be suppressed.

The combination of the 1 st long hole 58 and the guide member 70, which are disposed at the positions closest to the end portions of the blades 16 and 18 on the housing 22 side, is the 2 nd combination 92. The more the lateral vibration transmitted from the conversion mechanism 12 to the blades 16, 18 is suppressed at the position closer to the conversion mechanism 12, the more the lateral vibration of the entire blades 16, 18 can be suppressed. In the above configuration, the 1 st long hole 58 (i.e., the long hole 56a) disposed at the position closest to the end portion of the blades 16, 18 on the housing 22 side is disposed at the position closest to the conversion mechanism 12. Further, the combination of the long hole 56a and the guide member 70 is the 2 nd combination 92. This can further suppress the vibration of the blades 16 and 18 caused by the reciprocating motion of the blades 16 and 18.

Further, the combination of the 2 nd long hole 60 and the guide member 70 includes the 2 nd combination 92. In the above-described structure, the combination of the 1 st long hole 58 and the guide member 70 includes the 2 nd combination 92, and the combination of the 2 nd long hole 60 and the guide member 70 includes the 2 nd combination 92. This can suppress vibration of the blades 16 and 18 caused by the reciprocating motion of the blades 16 and 18.

Further, the plurality of guide members 70 include a 1 st guide member 72 that suppresses sliding resistance of the reciprocating motion of the blades 16, 18 and a 2 nd guide member 74 that suppresses vibration caused by the reciprocating motion of the blades 16, 18. The guide member 70 constituting the 1 st group 90 is the 1 st guide member 72, and the guide member 70 constituting the 2 nd group 92 is the 2 nd guide member 74. In the above configuration, by changing the configuration of the guide member 70, the sliding resistance of the reciprocating motion of the blades 16 and 18 can be suppressed while suppressing the vibration of the blades 16 and 18 in the left-right direction.

Further, the 1 st guide member 72 has a circular sectional shape, and the 2 nd guide member 74 has a polygonal sectional shape. In the above configuration, by changing the shape of the guide member 70, the sliding resistance of the reciprocating motion of the blades 16 and 18 can be suppressed while suppressing the vibration of the blades 16 and 18 in the left-right direction.

Further, the prime mover 24 is an electric motor. Here, when the prime mover 24 is an engine, the vibration of the engine itself is generally larger than other vibration factors. Therefore, the vibration felt by the operator's body is determined according to the magnitude of the vibration of the engine itself. Thus, even if the vibration transmitted from the conversion mechanism 12 to the blades 16 and 18 is suppressed, it is often difficult to suppress the vibration felt by the operator's body. On the other hand, when the motor 24 is an electric motor having smaller vibration than the engine, the vibration transmitted from the conversion mechanism 12 to the blades 16 and 18 becomes a factor of the vibration. Thus, the vibrations felt by the operator's body are determined by the magnitude of the vibrations transmitted from the conversion mechanism 12 to the blades 16, 18. In the above configuration, the vibrations of the blades 16 and 18 can be sufficiently suppressed by suppressing the vibrations transmitted from the conversion mechanism 12 to the blades 16 and 18, and the vibrations felt by the body of the operator can be sufficiently suppressed.

Further, the gardening trimmer 2 includes a battery pack BP that is attachable to and detachable from the housing 22, and supplies electric power to the electric motor and is chargeable. In this configuration, it is not necessary to provide a power supply line to the gardening trimmer 2, and the usability of the gardening trimmer 2 can be optimized.

Further, the gardening trimmer 2 includes handles 28, 30, and the handles 28, 30 are provided to the housing 22 and are held by an operator. In this configuration, the convenience of use of the gardening trimmer 2 can be optimized.

(1 st modification of embodiment 1)

In the 1 st modification of the 1 st embodiment, the 1 st combination 90 and the 2 nd combination 92 are different in configuration from the 1 st embodiment. In the 1 st modification of the 1 st embodiment, the 1 st guide member 72 is disposed in the elongated hole 56h at a position closest to the tip end portions of the pair of blades 16, 18 instead of the 2 nd guide member 74. Hereinafter, the gardening trimmer 2 according to the 1 st modification of the 1 st embodiment will be referred to as standard 2.

In the gardening trimmer 2 of the specification 2, the 2 nd guide member 74 abuts against the 1 st inner side surfaces 58a, 60a and the 2 nd inner side surfaces 58b, 60b of the elongated hole 56a in the elongated hole 56a disposed at the position closest to the motor 24. As a result, as shown in fig. 6, the lateral vibration of the pair of blades 16 and 18 caused by the relative reciprocating motion of the pair of blades 16 and 18 can be suppressed to the same extent as the lateral vibration of the gardening trimmer 2 according to the specification 1 of the first embodiment. Further, since the 7 1 st guide members 72 are not likely to come into contact with the 1 st inner side surfaces 58a, 60a and the 2 nd inner side surfaces 58b, 60b of the elongated hole 56, the sliding resistance of the pair of blades 16, 18 due to the relative reciprocating motion of the pair of blades 16, 18 is greater than that in the gardening trimmer of the comparative example 6, but can be set to the same degree as that in the gardening trimmer 2 of the 1 st specification.

(modification 2 of embodiment 1)

In the 2 nd modification of the 1 st embodiment, the 1 st combination 90 and the 2 nd combination 92 are different in configuration from the 1 st embodiment. In the 2 nd modification of the 1 st embodiment, the 2 nd guide members 74 are disposed in all the 1 st long holes 58, and the 1 st guide members 72 are disposed in all the 2 nd long holes 60. Hereinafter, the gardening trimmer 2 according to the 2 nd modification of the 1 st embodiment will be referred to as standard 3.

As shown in fig. 6, in the gardening trimmer 2 of the specification 3, the lateral vibration of the pair of blades 16 and 18 caused by the relative reciprocating motion of the pair of blades 16 and 18 can be suppressed to the same extent as the lateral vibration in the gardening trimmer 2 of the specification 1 of the embodiment 1. Further, since the 7 1 st guide members 72 are not likely to come into contact with the 1 st inner side surfaces 58a, 60a and the 2 nd inner side surfaces 58b, 60b of the elongated hole 56, the sliding resistance of the pair of blades 16, 18 due to the relative reciprocating motion of the pair of blades 16, 18 is greater than that in the gardening trimmer of the comparative example 6, but can be set to the same degree as that in the gardening trimmer 2 of the 1 st specification.

(modification 3 of embodiment 1)

In a 3 rd modification of the 1 st embodiment, the 1 st combination 90 and the 2 nd combination 92 are different in configuration from the 1 st embodiment. In modification 3 of embodiment 1, the 2 nd guide member 74 is disposed in the elongated hole 56b (the 1 st elongated hole 58), and the 1 st guide member 72 is disposed in the elongated hole 56a (the 1 st elongated hole 58) and the elongated holes 56c, 56d, 56e, 56f, 56g, and 56h (the 2 nd elongated hole 60). Hereinafter, the gardening trimmer 2 according to the 3 rd modification of the 1 st embodiment will be referred to as standard 4.

In the gardening trimmer 2 of the standard 4, the 1 st guide member 72 is disposed in the elongated hole 56a disposed closest to the motor 24, while the 2 nd guide member 74 is disposed in the elongated hole 56b disposed adjacent to the elongated hole 56 a. Thus, as shown in fig. 6, the lateral vibration of the pair of blades 16, 18 caused by the relative reciprocating motion of the pair of blades 16, 18 is larger than the lateral vibration in the gardening trimmer 2 of the specification 1 of the first embodiment, but smaller than the lateral vibration in the gardening trimmers of the specifications 6 and 7 of the comparative examples. Further, since the 7 1 st guide members 72 are not likely to come into contact with the 1 st inner side surfaces 58a, 60a and the 2 nd inner side surfaces 58b, 60b of the elongated hole 56, the sliding resistance of the pair of blades 16, 18 due to the relative reciprocating motion of the pair of blades 16, 18 is greater than that in the gardening trimmer of the comparative example 6, but can be set to the same degree as that in the gardening trimmer 2 of the 1 st specification.

(embodiment 2)

Embodiment 2 is explained with reference to fig. 7. In embodiment 2, the guide member 70 includes only the 1 st guide member 72 and does not include the 2 nd guide member 74. Further, the 1 st blade 16 and the 2 nd blade 18 each include a 3 rd long hole 158 shown in fig. 7 in addition to the long hole 56 having the same configuration as that of the 1 st embodiment. The distance L2 between the 1 st inner surface 158a and the 2 nd inner surface 158b of the 3 rd elongated hole 158 is smaller than the distance L1 between the 1 st inner surface 58a and the 2 nd inner surface 58b of the elongated hole 56. Thus, the total value of the distance W3 between the 1 st inner surface 158a of the 3 rd long hole 158 and the 1 st guide member 72 and the distance W4 between the 2 nd inner surface 158b of the 3 rd long hole 158 and the 1 st guide member 72 is smaller than the total value of the distances W1 between the 1 st inner surfaces 58a, 60a of the long holes 56 and the 1 st guide member 72 and the distances W2 between the 2 nd inner surfaces 58b, 60b of the long holes 56 and the 1 st guide member 72. In the present embodiment, the total value of the interval W3 and the interval W4 is 0.2mm or less.

In the 2 nd embodiment, the combination of the long holes 56, 158 and the guide member 70 includes the 1 st combination 90 made up of the long hole 56 and the 1 st guide member 72 and the 2 nd combination 192 made up of the 3 rd long hole 158 and the 1 st guide member 72. The configuration of the 1 st combination 90 of the 2 nd embodiment is the same as the configuration of the 1 st combination 90 of the 1 st embodiment, and the configuration of the 2 nd combination 192 of the 2 nd embodiment is the same as the configuration of the 2 nd combination 92 of the 1 st embodiment. Since the total value of the interval W3 and the interval W4 in the 2 nd group 192 is smaller than the total value of the interval W1 and the interval W2 in the 1 st group 90, the vibration of the pair of blades 16, 18 in the left-right direction due to the relative reciprocating motion of the pair of blades 16, 18 can be suppressed as compared with the 1 st group 90. On the other hand, the sliding resistance of the pair of blades 16, 18 due to the relative reciprocating motion of the pair of blades 16, 18 is larger than that in the 1 st combination 90.

In the present embodiment, the elongated holes 56, 158 have the 1 st inner side surfaces 58a, 60a, 158a extending in the front-rear direction and the 2 nd inner side surfaces 58b, 60b, 158b extending in the front-rear direction and opposed to the 1 st inner side surfaces 58a, 60a, 158 a. In the 1 st combination 90, the total value of the distance W1 between the 1 st guide member 72 and the 1 st inner side surfaces 58a, 60a and the distance W2 between the 1 st guide member 72 and the 2 nd inner side surfaces 58b, 60b is the 1 st distance. In the 2 nd group 192, the total value of the distance W3 between the 1 st guide member 72 and the 1 st inner surface 158a and the distance W4 between the 1 st guide member 72 and the 2 nd inner surface 158b is the 2 nd distance smaller than the 1 st distance. In this configuration, by adjusting the 1 st interval (i.e., the sum of the intervals W1 and W2) associated with the long hole 56 and the 1 st guide member 72 constituting the 1 st group 90 and the 2 nd interval (i.e., the sum of the intervals W3 and W4) associated with the 3 rd long hole 158 and the 1 st guide member 72 constituting the 2 nd group 192, it is possible to suppress the sliding resistance of the reciprocating motion of the blades 16, 18 while suppressing the vibration of the blades 16, 18 caused by the reciprocating motion of the blades 16, 18.

In one embodiment, only one of the 1 st blade 16 and the 2 nd blade 18 may reciprocate. In this case, the other of the 1 st blade 16 and the 2 nd blade 18 may be immovably attached to the guide bar 14. Further, the guide bar 14 itself may constitute the other of the 1 st blade 16 and the 2 nd blade 18.

In one embodiment, the other 2 nd guide members 74 may be disposed in the other 2 nd long holes 60 (the long holes 56c, 56d, 56e, 56f, 56g) regardless of whether the 2 nd guide member 74 is disposed in the long hole 56 h. Note that, regardless of whether the 2 nd group 192 is disposed in correspondence with the long hole 56h, the other 2 nd group 192 may be disposed in correspondence with the other 2 nd long hole 60 (the long holes 56c, 56d, 56e, 56f, 56 g).

In one embodiment, the conversion mechanism 12 may be a cam-crank conversion mechanism.