JPH0668417U - Telescopic pipe for gardening and agricultural tools - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a horticultural / agricultural tool telescopic pipe that can be easily and swiftly expanded and contracted and can be adjusted to a desired length according to the height of a branch or the like. [Structure] The first rod 9 and the second rod 10 are inserted into the inner and outer pipes 3, 2. The first rod 9 having the recesses 43 ...
The joint body 25 to which the second rod 10 is connected is slidably inserted and held. The swing arm 26 is swingably attached to the joint body 25 via the pivot pin 35, and the engagement pin 40 is attached to the swing arm 26.
Install. The insertion pin 19 that contacts the swing arm 26 is connected to the lever 17. An elastic member (20) is attached to the lever (17) to elastically urge the insertion pin (19) to press the rocking arm (26) and elastically rock in the direction in which the engagement pin (40) is locked in the recess (43). When the engaging pin 40 is locked in the recess 43, the engaging pin 40 and the pivot pin 35 receive the pulling force acting on the first rod 9 and the second rod 10 so that the engaging pin 40 is recessed. The pivot pin 35 is arranged outside the one end edge 42 of the first rod 9 in the opening direction of the recess 43 so as to be bite-in.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a telescopic pipe for gardening and agricultural tools.

[0002]

[Prior art]

 The horticultural / agricultural tool pipes used to cut the branches of plants in high places are conventionally divided into two split pipes and a split lock for operating the blades etc. installed inside each split pipe. The split pipe and the split rod were configured so as to be separable and connectable, respectively.

Then, both split pipes and both split rods are added to adjust the total length.

[0004]

[Problems to be solved by the device]

 Therefore, in the past, adjusting the length of the pipe was very troublesome, and the length of the pipe could only be adjusted in the second stage, which was inconvenient.

Therefore, the present invention solves the above-mentioned conventional problems, and the length can be adjusted easily and quickly, and the gardening can be adjusted in a plurality of stages to a desired length according to the height of a branch or the like. The purpose is to provide a telescopic pipe for agricultural tools.

[0006]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention comprises an outer pipe and an inner pipe inserted into the outer pipe so as to extend and contract, and a first rod for operating a blade portion or the like at the tip of the inner pipe. The second rod is inserted into the inner and outer pipes, and the first rod having a plurality of locking recesses formed at one side edge at a fixed pitch in the longitudinal direction is attached to the joint body to which the second rod is connected. , The slide arm is slidably inserted and held, the swing arm is swingably attached to the joint body via a pivot pin, and an engaging pin that can be engaged with and disengaged from the recess is formed on a part of the swing arm. In addition, a lever is swingably provided on the outer surface side of the outer pipe, and a radial through hole of the outer pipe and a plurality of hole portions penetrating the inner pipe at a predetermined pitch in the longitudinal direction are provided. One hole of the The connecting pin to the lever, and elastically urges the insertion pin in the inner diameter direction to press the swing arm to swing the engagement pin in the direction in which the engagement pin is locked in the recess. An elastic member is attached to the lever, and when the engagement pin is locked in the recess, a pulling force acting on the first rod and the second rod is applied by the engagement pin and the pivot pin. The pivot pin is arranged outside the one end edge of the first rod in the opening direction of the recess so that the engaging pin is bited into the recess when received. .

[0007]

[Action]

 From the state where the engaging pin is locked in the recess of the first rod and the first and second rods are connected, the lever is swung by the force that opposes the elastic force of the elastic member, and the insertion pin is rocked. When it is disengaged from the moving arm, the locked state of the locking pin in the recess is released, the first rod is ready to slide, and the lever is swung to insert it from the hole of the inner pipe. When the pin is pulled out, the inner and outer pipes can be expanded and contracted, and the total length can be adjusted in multiple stages according to the pitch of the hole.

After adjusting the total length, if the force that swings the lever is released, the lever swings in the opposite direction by the elastic force of the elastic member, and the insertion pin is inserted into the through hole and the hole portion. The inner and outer pipes are connected to each other, the insertion pin presses the swing arm, the engagement pin is locked in the recess, and the first and second rods are connected.

In the state where the engagement pin is locked in the recess, even if a force is applied to the blade portion when cutting a branch or the like, and a tensile force acts on the first and second rods, The dowel pin is pressed into the recess so as to be pressed into the recess, and the force is applied to the blade portion, so that the first and second rods are more strongly connected to each other.

[0010]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the drawings illustrating an embodiment.

FIG. 1 shows an embodiment in which the expandable pipe for gardening / agricultural tools according to the present invention is used for high branch scissors.

In FIG. 1, reference numeral 1 denotes a blade portion such as scissors, which is provided at a tip portion of an inner pipe 3 which is elastically inserted into the outer pipe 2.

The blade portion 1 is composed of a fixed blade 4 fixed to a tip portion of the inner pipe 3 and a movable blade 5 pivotally attached to the fixed blade 4 so as to be swingable.

A connecting rod 6 is pivotally connected to the movable blade 5 via a pivot 7, and the pivot 7 slides along an elongated hole 8 of the fixed blade 4.

The connecting rod 6 is connected to the handle portion 11 for operating the blade portion 1 via the first rod 9 and the second rod 10 which are inserted through the inner and outer pipes 3, 2.

The handle portion 11 includes a handle body portion 12 fixed to a base end portion of the outer pipe 2, and a movable handle portion 13 pivotally attached to the handle body portion 12 so as to be swingable. The base end portion of 10 is connected to the movable handle portion 13.

The movable handle 13 is constantly elastically urged in the unfolding direction by the spring member 14, and the movable handle 13 of the handle 11 and the movable blade 5 of the blade 1 are held in a virtual line state. To be done.

When the movable handle portion 13 is pulled from the state of this imaginary line to the handle body portion 12, the movable blade 5 is drawn through the first and second rods 9 and 10 and the connecting rod 6 as shown by a solid line. It is possible to close and cut a branch or the like sandwiched between the fixed blade 4.

Then, as shown in FIG. 2, the cover body 15 is fixed to the outer peripheral surface of the distal end of the outer pipe 2 with screws or the like.

A lever 17 is swingably attached to a protrusion 16 of the cover body 15 via a pivot shaft 18.

An insertion pin 19 with a flange is swingably connected to the tip of the lever 17. Further, an elastic member 20 such as a pinch spring is interposed between the lever 17 and the cover body 15, and the lever 17 is elastically biased so as to swing in the arrow A direction.

Further, the inner pipe 3 is provided with a plurality of hole portions 23 ... At a predetermined pitch in the longitudinal direction, and when the inner pipe 3 is slid with respect to the outer pipe 2, each hole portion 23. And the radial through holes 24 formed in the outer pipe 2 are sequentially aligned.

When the inner pipe 3 is slid, rotation of the inner pipe 3 with respect to the outer pipe 2 is regulated by a rotation regulating means (not shown).

The tip of the insertion pin 19 is adapted to move in and out of the hole 23 of the inner pipe 3 and the through hole 24 of the outer pipe 2 by the rocking operation of the lever 17. The insertion pin 19 inserted into the hole 24 is elastically urged in the inner diameter direction by the elastic member 20 via the lever 17.

Further, as shown in FIGS. 2 and 3, the first rod 9 and the second rod 10 are extensiblely connected by a joint mechanism F 1.

The joint mechanism F includes a joint body 25, a swing arm 26, an engagement pin 40, an elastic member 28, and the like.

The joint body 25 is composed of a pair of flat wall portions 29, 29 standing upright in parallel, and a connecting wall portion 30 connecting the flat wall portions 29, 29.

The tip ends of the second rods 10 are connected to the base end portions of the flat wall portions 29, 29 by pivot pins 31, and the protruding end portions of the flat wall portions 29, 29 are connected to the connecting pin 32. Are connected by.

Further, rectangular window portions 33, 33 are formed on the base end sides of the flat wall portions 29, 29, and a hook portion 34 is formed on one flat wall portion 29 by cutting and raising or the like. It

In the inner pipe 3, the joint body 25 is held by the holder 27 so as to be slidable in the axial direction without rotating around the axial center or being displaced in the radial direction. Retained.

The swing arm 26 is swingably attached to the flat wall portions 29, 29 of the joint body 25 by means of a pivot pin 35.

The swing arm 26 includes a pair of flat plate portions 36, 36 arranged in parallel to the outer surface side of the flat wall portions 29, 29, a connecting plate portion 37 connecting the flat plate portions 36, 36, and one of The inclined plate portion 38 extends from the flat plate portion 36, and the abutting plate portion 39 is connected to the inclined plate portion 38 in an orthogonal manner.

At both ends of the flat plate portions 36, 36, both ends of a cylindrical engagement pin 40 which is inserted into the window portions 33, 33 of the joint body 25 in a skewered manner are attached. The engagement pin 40 is arranged on the base end side of the joint body 25, and the pivot pin 35 is arranged on the tip end side of the joint body 25.

A small hole 41 is formed through the inclined plate portion 38, and the small hole 41 and the hook portion 34 of the joint body 25 are hooked at both ends of a resilient member 28 such as a tension spring. When stopped, the swing arm 26 is elastically urged to swing in the direction of arrow C at all times.

The tip of the insertion pin 19 comes into contact with the surface of the contact plate portion 39 of the swing arm 26, and the elastic force of the elastic member 28 resists the elastic force of the elastic member 28. The swing arm 26 is pressed, and the engagement pin 40 elastically swings in the direction in which the engagement pin 40 is locked in the recess 43 (the direction opposite to the arrow C direction).

That is, the elastic member 28 and the elastic member 28 are swung in the opposite direction, and the elastic member 28 and the elastic member 28 are swung in the opposite direction. The strength of the elastic member 20 is set.

Next, a semicircle that can be engaged with and disengaged from the engagement pin 40 is provided at one end 42 of the strip-shaped first rod 9 at the same longitudinal pitch as the holes 23 of the inner pipe 3. A plurality of concave portions 43 are formed.

The first rod 9 is slidably inserted and held in a passage formed by the connecting wall portion 30, the flat wall portions 29, 29, the pivot pin 35, and the like in the joint body 25. Within 25, the swinging arm 26 swings to disengage the engaging pin 40 from the recess 43 of the first rod 9.

In the locked state of the engagement pin 40 in the recess 43 of the first rod 9, it is in the opening direction of the recess 43 and outside the one side edge 42 of the first rod 9. Thus, the pivot pin 35 is located.

FIG. 2 shows a state in which the inner and outer pipes 3 and 2 and the first and second rods 9 and 10 are connected.

In this case, the insertion pin 19 is inserted into the hole 23 and the through hole 24 so that the slide of the inner pipe 3 with respect to the outer pipe 2 is regulated and connected, and the contact plate portion 39 by the insertion pin 19 is inserted. The swinging arm 26 swings by pressing to lock the engaging pin 40 in the recess 43, and the slide of the first rod 9 with respect to the joint body 25 and the second rod 10 is regulated and coupled, and Then, this connected state is held by the elastic force of the elastic member 20.

From this connected state, if the lever 17 is swung in the direction of arrow B as shown in FIG. 4 against the resilient force of the resilient member 20, the tip end portion of the insertion pin 19 swings. The swinging arm 26 swings in the direction of arrow C by the resilient force of the resilient member 28, away from the abutting plate portion 39 of the arm 26, and the engaging pin 40 disengages from the recess 43. The connection between the second rods 9 and 10 is released, and the second rods 9 and 10 are allowed to expand and contract. Further, when the tip end of the insertion pin 19 comes out of the hole 23 of the inner pipe 3, the connection between the inner and outer pipes 3 and 2 is released. It can be expanded and contracted.

Then, the inner pipe 3 is slid, and one of the hole portions 23 of the inner pipe 3 is selectively selected so that the inner and outer pipes 3 and 2 have a desired total length. When the lever 17 is released from swinging in the direction of the arrow B by aligning with the through hole 24, the lever 17 swings in the direction of the arrow A by the resilient member 20 as shown in FIG. Enters the hole 23, and the inner and outer pipes 3 and 2 are connected.

At this time, as the inner pipe 3 slides, the first rod 9 also slides at the same time, and if the hole 23 is aligned with the through hole 24 as described above, one of the recesses 43 ... When the insertion pin 19 inserted into the hole 23 and positioned at a position where it can be engaged with the engagement pin 40 presses the contact plate 39, the swing arm 26 swings in the direction opposite to the arrow C direction. Then, the engagement pin 40 is locked in the recess 43, and the first and second rods 9 and 10 are connected together with the inner and outer pipes 3 and 2.

When operating the blade portion 1 (see FIG. 1), etc., the joint body 25, the swing arm 26, etc. are integrated with the first and second rods 9, 10 inside the inner and outer pipes 3, 2. Although it slides in the axial direction, the insertion pin 19 presses the contact plate 39 while slidingly contacting the contact plate 39 (without detaching), so that the first and the first pins can be operated even when the blade is operated. The connected state of the two rods 9 and 10 is maintained.

Further, when cutting a branch or the like, a force is applied to the blade portion 1 or the like, and a tensile force acts on the first and second rods 9 and 10, and as shown in FIG. When the engaging pins 40 and the pivot pins 35 receive the pulling forces T ₁ and T ₂ , the pivot pins 35 are arranged outside the one end edge 42 of the first rod 9 as described above, and Since the pivot pin 35 is arranged on the side of the pulling force T ₁ with respect to the dowel pin 40, the engaging pin 40 and the pivot pin 35 try to oscillate in the arrow E direction, and the pulling force T ₁ , As T ₂ increases (that is, as force is applied to the blade portion 1 etc. due to cutting, etc.), the engagement pin 40 bites into the recess 43 and is pressed into contact therewith, so that the first and second rods 9 and 10 become more tight. It is strongly connected.

It should be noted that the present invention is not limited to the above-described embodiments, and design changes can be freely made without departing from the gist of the present invention.

For example, the recess 43 does not have to be a semi-circular shape, and can be changed to various shapes such as a rectangular shape, and the cross-sectional shape of the engagement pin 40 that locks in the recess 43 can also be changed to various shapes. It can be changed.

[0049]

[Effect of device]

 Since the present invention is constructed as described above, it has a great effect as described below.

According to the horticultural / agricultural tool expansion / contraction pipe of the present invention, by swinging the lever 17, the inner and outer pipes 3 and 2 and the first and second rods 9 and 10 are connected and expanded / contracted easily and quickly. It is possible to make it possible, and it is convenient to adjust the total length according to the height of branches etc. in multiple stages.

In addition, even when a force is applied to the blade portion 1 or the like during use such as when cutting a branch or the like and tensile forces T ₁ and T ₂ act on the first and second rods 9 and 10, Since the engaging pin 40 of 1 is bite-shaped and pressed into the recess 43 of the first rod 9 and the first and second rods 9 and 10 are more strongly connected, there is a concern that they may unexpectedly come off during use. Absent.

[Brief description of drawings]

FIG. 1 is an overall front view showing an embodiment of the present invention.

FIG. 2 is a sectional view of a main part.

FIG. 3 is a perspective view of a main part.

FIG. 4 is a sectional view of a main part.

FIG. 5 is an operation explanatory view.

[Explanation of symbols]

1 Blade 2 Outer Pipe 3 Inner Pipe 9 1st Rod 10 2nd Rod 17 Lever 19 Insertion Pin 20 Resilient Member 23 Hole 24 Through Hole 25 Joint Body 26 Swing Arm 35 Pivoting Pin 40 Engagement Pin 42 One Side edge 43 recess T ₁ tensile force T ₂ tensile force

Claims (1)

[Scope of utility model registration request] 1. A first rod 9 and a first rod 9 which are provided with an outer pipe 2 and an inner pipe 3 which is inserted into the outer pipe 2 so as to extend and contract, and which operates a blade portion 1 and the like at the tip of the inner pipe 3. Two
Insert the rod 10 into the inner and outer pipes 3 and 2, and set one end edge
A plurality of locking recesses 43 formed on the 42 at a predetermined pitch in the longitudinal direction.
The first rod 9 having ... Is slidably inserted and held in the joint body 25 to which the second rod 10 is connected, and the swing arm 26 is swingable in the joint body 25 via the pivot pin 35. The swing arm 26 is attached to
A detachable engagement pin 40 is attached to 43, and a lever 17 is swingably provided on the outer surface side of the outer pipe 2 so that the radial through hole 24 of the outer pipe 2 and the inner pipe 3 The insertion pin 19 coming in and out of one of the plurality of hole portions 23 ... Penetrating at a predetermined pitch in the longitudinal direction and coming into contact with the swing arm 26 is connected to the lever 17, and The insertion pin
The elastic member 20 is elastically biased in the inner diameter direction to press the rocking arm 26 and elastically rock the rocking arm 26 in the direction in which the engaging pin 40 is locked in the recess 43. Attached to the engaging pin 40 in the concave portion 43, the pulling forces T ₁ and T ₂ acting on the first rod 9 and the second rod 10 are applied to the engaging pin 40 and the above-mentioned concave rod 43. In the opening direction of the recess 43 and outside the one side edge 42 of the first rod 9, the engagement pin 40 is bited into the recess 43 when the pivot pin 35 is received. A telescopic pipe for gardening and agricultural tools, in which the pivot pin 35 is arranged.