JP6883058B2 - Work tools - Google Patents

Description

The present invention attaches an actuator having a structure in which the actuator can be easily replaced according to the purpose of use for bedding, beating the shoulder, plowing soil, cutting grass roots growing in the lawn, etc. It is a work tool. In particular, this work tool relates to a work tool that makes it possible to prevent or reduce large vibrations and shocks to the wrists and fingers during use.

Conventionally, Patent Document 1 and similar products have been sold as carpet beaters, Patent Document 2 has many applications for similar patents for shoulder beaters, and Patent Document 3 has light tillage of gardens and lawns. The patent documents, which are sold and used such as weeding tools in the above, are described here as an example.
The work tool described in Patent Document 1 is a bedding beater that can reduce noise by causing a time lag on the bedding surface by using two arms having different bending rates from the grip portion of the bedding beater.
Next, the work tool described in Patent Document 2 is a shoulder tap, the handle is formed of a spring material, the base end thereof is embedded in a grip, the other end is formed of a soft elastic resin, and a teat group is formed on the top. The handle of the spring material, which is hemispherical, is provided with an opening mounting portion, and the structure is such that two hemispheres having different hardness are combined with the opening mounting portion.
Further, the working tool described in Patent Document 3 is a weeding tool, which has a structure in which an iron rod is bent into an L shape to form an L-shaped blade or a blade is welded, and the blade is driven or pushed near the root of the grass. , A method of weeding.

JP-A-2007-275526 Jitsukosho 61-9636 JP-A-2017-136057

The one described in Patent Document 1 uses a slide stopper mechanism that causes a time difference between the bedding surface of the main arm and the auxiliary arm by using arms having different bending rates from the bedding beater grip portion. Is directly affected by the expansion of the main handle and auxiliary handle, and when used, large vibrations and shocks are transmitted to the fingers and wrists, and it cannot be used for a long time.

The one described in Patent Document 2 is a hemisphere in which the handle is formed of a spring material, the base end thereof is embedded in a grip, the other end is formed of a soft and hard elastic resin, and the papilla group is formed on the top. It has a shape, and a spring material attachment part is provided in the hemispherical opening, and the structure is such that two hemispheres are attached together, but vibration and impact are directly transmitted to the handle and grip, and the user Limited.

The one described in Patent Document 3 has a drawback that it is necessary to drive or push the blade portion near the root of the grass, and a large driving force or pushing force is applied to the fingers and wrists, and vibration or impact is applied.

All of the above patent documents may not be inconvenient for use by healthy people, but have the disadvantage that fingers and wrists are subject to large vibrations and shocks when used by persons with disabilities and the elderly.
In view of the above-mentioned drawbacks of the prior art, the present invention attaches both the main handle and the auxiliary handle of the elastic material in a state where the movement can be adjusted by superimposing them, and changes the elastic modulus of the main handle to reduce vibration and shock transmission and grip. Utilizing the shock absorbing structure of the main body, the purpose is to provide work tools that can be widely used by healthy people, disabled people, and the elderly. Furthermore, it is possible to replace working tools such as grassroots cutting tools or carpet beaters as working tools so that they can be applied to various tasks.

The present invention has the following configuration in order to achieve the above object.

The first working tool disclosed here is a working tool having an elastic handle for hitting or driving an object by a swinging motion of a user, and one end of the elastic handle is attached to the grip body. It is composed of a main handle that is extended and swingable by a swinging motion, and an acting tool that is provided on the other end side of the main handle and also serves as a weight for hitting or driving an object by the swinging motion. An elastically deformable auxiliary handle, which has a mounting portion on the other end side of the main handle to which the action tool can be attached and is arranged so as to overlap the main handle, and both the main handle and the auxiliary handle are fixed. The grip body is provided with an adjustable member that can be moved and adjusted to change the position, and the grip body includes a support portion for attaching and fixing one end of the main handle and the auxiliary handle, and an extension of the support portion of the main handle and the auxiliary handle. It is a work tool provided with a damper member at least at the joint position.

The second working tool disclosed here is to provide a space member made of a cushion material between the main handle and the auxiliary handle when the main handle and the auxiliary handle are overlapped and fixed at different positions. The work tool according to the first.

The third working tool disclosed here has a groove and a mounting hole that can be attached and detached as a weight of the working tool, and is attached to the mounting portion on the other end side of the main handle. The work tool described.

The fourth working tool disclosed here is replaced with a grassroots cutting tool, a bedding beater, or another working tool that can be attached to or detached from the main handle as a working tool at the attachment portion on the other end side of the main handle. The work tool according to the first or second above, which is possible.

In the fifth working tool disclosed here, when the working tool is a grass root cutting tool, the tip of the main handle is a grass root cutting blade, and the root cutting blade is an extension virtual line of the main handle and an extension virtual line of the blade. The working tool according to the first or second above, wherein the bending angle formed by the blade is 95 ° to 135 °.

The work tools having the above configuration have the effects listed below.
The first disclosed work tool has a structure in which the main handle and the auxiliary handle are fixed by a movable and adjustable fixing member so that the elastic modulus of the main handle can be changed, and the main handle is at the end of the support portion of the grip body. It is a grip body that extends from and is provided with a damper member. As a result, by absorbing the vibrations and shocks from the working tool, the drawback of applying large vibrations and shocks to the fingers and wrists is reduced, so that it is possible to obtain the effect that the vibrations and shocks are less likely to be transmitted to the fingers and wrists.

Further, in the work tool disclosed in the second aspect, the main handle and the auxiliary handle can be overlapped and fixed by changing the overlapping position. By providing a space member made of a cushion material between the main handle and the auxiliary handle, the main handle and the auxiliary handle can be fixed. In addition to preventing the striking sound of the auxiliary handle, the main handle is easily bent and the snap is easy to use, and the swing can be performed with a weak force, so that more force than the swing can be applied to the working tool.

Further, in the work tool disclosed in the third or fourth, the working tool that also serves as a weight is provided with a groove and a mounting hole that can be attached and detached, and the groove of the working tool and the working tool mounting portion of the main handle are combined and fastened. To do. This makes it easy to replace grassroots or carpet beaters, which has the effect of making a wide range of work tools that can also be used with other action tools.

In the work tool disclosed in the fifth disclosure, the working tool mounting portion of the main handle is modified to form a blade portion on the main handle and bent at 95 ° to 135 ° to make the working tool, and a weight is attached to the working tool mounting portion. By providing mounting holes that can be made and mounting the upper and lower weights, the effect of making an inexpensive grassroots cutting tool using the above structure can be obtained.

A perspective view showing an embodiment of the present invention, a work tool in which a main handle and an auxiliary handle are fixed by a fixing member using an action tool that also serves as a weight. FIG. 5 is a perspective view showing an embodiment of the present invention, a work tool in which a space member is inserted between a main handle and an auxiliary handle and fixed by a fixing member using an action tool that also serves as a weight. A top view showing an embodiment of the present invention, a work tool in which a main handle, an auxiliary handle, and a support member are fastened with fastening bolts and nuts, and only the fixing member is used. A front view showing an embodiment of the present invention, a work tool in which a main handle, an auxiliary handle, and a support member are fastened with fastening bolts and nuts, and only the fixing member is used. The top view which showed one Example which assembled the grassroots cutting tool of the action tool which also served as the weight of this invention. The front view which showed one Example which assembled the grassroots cutting tool of the action tool which also served as the weight of this invention. A cross-sectional view showing an embodiment of the present invention, a mounting portion of a grassroots cutting tool. Top view showing an embodiment of the present invention, a bedding beater. A front view showing an embodiment of the present invention, a bedding beater. Top view showing an embodiment of the present invention, a grassroots cutting action tool made by bending a main handle. A front view showing an embodiment of the present invention, a grassroots cutting action tool made by bending a main handle.

In order to carry out the present invention, some examples which are the best embodiments will be described. However, the present invention is not intended to be limited to these one embodiment.

1 to 2 show a perspective view of a working tool 1 according to an embodiment of the present invention, and FIGS. 3 to 4 show a top view and a front view of the working tool 1 according to an embodiment of the present invention. Is a work tool 1 having a handle of an elastic material used by attaching an action tool 9 that also serves as a weight, which performs work such as hitting or driving an object by a user's swinging motion.
The work tool 1 is composed of a main handle 2 that is extended and swingable by attaching one end of an elastic handle to the grip body 5, and an elastically deformable auxiliary handle 3 that is arranged so as to overlap the main handle 2. Further, the grip body 5 is fixed by attaching the main handle 2 and the auxiliary handle 3 to the support portion 5a with fastening bolts and nuts 5c or the like.
Alternatively, a support portion 5a in which the main handle 2 and the auxiliary handle 3 are attached and fixed to the support member 5e with fastening bolts and nuts 5c or the like, and a damper member extending from the support portion 5a to at least the joint position 5f of the main handle 2 and the auxiliary handle 3 When the swinging work is performed by providing the 5b, the main handle 2 and the auxiliary handle 3 swing integrally, and the damper member 5b prevents the support member 5e from popping out.

Further, a fixed member 12 that can be moved and adjusted by fixing both the main handle 2 and the auxiliary handle 3 and changing the position is provided, and in FIG. 1, the main handle 2 and the auxiliary handle 3 are fixed by the fixing member 12, which is used for striking. When the swinging work is performed, the main handle 2 and the auxiliary handle 3 swing together, so that the auxiliary handle 3 has an effect of preventing the hitting sound of hitting the main handle 2.
Further, when the fixing member 12 is fixed at a position on the side of the working tool 9 which also serves as a weight, the elastic deflection is suppressed and the main handle 2 becomes hard, so that the force is easily transmitted directly to the working tool 9 which also serves as a weight when swinging. Therefore, when a healthy person grips and swings the grip body 5, he / she can apply a strong driving force to the working tool 9 which also serves as a weight.
On the other hand, if the fixing member 12 is moved to the grip body 5 side and fixed, elastic deformation is likely to occur, elastic flexion is likely to work, and if the grip body 5 is gripped and shaken, the action tool can be driven with a snap, which is somewhat weak. You can work even with the driving force, which suppresses the transmission of vibrations and shocks to your fingers and wrists.
As described above, the position of the fixing member 12 can be changed according to the health condition of the worker to perform continuous work.

Further, in FIG. 2, a space member 11 whose movement can be adjusted is inserted between the main handle 2 and the auxiliary handle 3 and fixed by the fixing member 12. When the swinging operation is performed by inserting the space member 11, the auxiliary handle 3 is inserted. The space member 11 is preferably made of a rubber material, a sponge material, or the like, but may be an elastic member.
This makes it easier for the main handle 2 to be elastically deformed, that is, elastically flexed, and it becomes easier for the force utilizing the snap to be applied to the acting tool 9 that also serves as a weight when swinging, which is improved by 1 time or more (1.1 to 2 times). , The force of the swinging speed, the weight of the weight, the amount of elastic deflection of the elastic material, etc.) works, and the force more than the swinging force works, so the space between the damper member 5b of the grip body 5 and the main handle 2 The synergistic effect of both members with the member 11 works to alleviate vibrations and impacts on the fingers and wrists, so that the work tool 1 can be used by persons with disabilities and the elderly.

The elastic material used for the main handle 2 and the auxiliary handle 3 is an elastic material due to repeated use because burrs are generated on both slit surfaces at the time of slit processing (longitudinal continuous cutting) from an elastic coil material or the like. It is recommended to remove burrs (sometimes referred to as edge slits or R-bite processing) to shorten the life of the main handle 2 and auxiliary handle 3 and cause injuries to fingers during handling. Further, the main handle 2 and the auxiliary handle 3 can be easily assembled by cutting both ends on the R surface or the C surface to the required length.
When the main handle 2 and the auxiliary handle 3 are made of the same material, it is advisable to machine a long hole in order to reduce the elastic force of the auxiliary handle 3. Using the same material is also advantageous in terms of cost.
The elastic material is a stainless steel material consisting of SUS304CSP-H, SUS301CSP-3 / 4H or H, plate thickness 0.5 to 1.2 mm, and plate width 15 to 30 mm. By doing so, it is hard to rust and can be washed with water and is easy to use. It can be used as a work tool, but it may be any material having elasticity instead of stainless steel.

In one embodiment of the present invention shown in FIGS. 1 to 4, the grip body 5 has a total length of 100 to 150 mm, 70 to 110 mm from the terminal is a support portion 5a, and 20 to 50 mm is a damper member 5b.
Further, the support portion 5a and the damper member 5b shown in FIGS. 1 and 2 may be bonded as individual members.
As shown in FIGS. 3 to 4, it is better to make the support portion 5a and the damper member 5b continuous with the same member, and when the same member is made continuous, a rubber material is used and mainly in the central portion of the damper member 5b. The outer peripheral portion is simultaneously molded, leaving the through holes 5d of the handle 2 and the auxiliary handle 3 and the elongated hole portion for inserting the support member 5e of the core material inside the support portion 5a. It is preferable to provide non-slip unevenness having a height of 1 to 3 mm and a number of rows of 1 to 5 and a width of 2 to 5 mm, which is 5 to 3 mm.
Further, the grip body 5 needs to be rigid, and as an embodiment, a support member 5e is inserted as a rigid core material in the support portion 5a, and the support member 5e is fastened to the main handle 2 and the auxiliary handle 3, such as bolts and nuts 5c. A damper member 5b is provided at least at the joint position 5f of the main handle 2 and the auxiliary handle 3 which is extended to the support portion 5a to be assembled and fixed by.
From the above structure, the grip body 5 is stable even when rocked, is easy to grip, is not too hard, does not slip on the grip when swinging, and can be a cost-effective grip, and a damper when swinging. The member 5b has a structure that prevents the support member 5e from popping out.
The rubber hardness of this rubber-based material is preferably 40 to 60 °, but is not limited to this.

The entire support portion 5a of the grip body 5 may have a rubber hardness of 50 to 100 °, or plastic, wood, metal, etc. may be used, and it is stable and does not slip, is not too hard, and is cost effective. Considering that it is advantageous, rubber coating, a rubber cover may be fitted or adhered to the outer periphery of the support portion 5a, but it is durable and costly to make the grip body 5 continuous. Excellent.
In addition, since it is necessary to alleviate the transmission of vibrations and shocks applied to the fingers and wrists of the damper member 5b, it is preferable to use a rubber type having a rubber hardness of 40 to 60 ° and a sponge type (for example, urethane rubber) for the plastic material. There are various products, and you have to make the best one in consideration of cost and durability.

5 and 7 are a top view, a front view, and a cross-sectional view of the grassroots cutting tool 9a, which is an acting tool 9 also serving as a weight, as another embodiment of the present invention, which is the same as the above-described embodiment. The members will be described with the same reference numerals.
The grassroots cutting tool 9a of FIGS. 5 to 6 has a groove and a mounting hole 7b processed in accordance with the main handle 2, and the main handle 2 has an operating tool mounting portion 7 and the mounting hole 7b is processed. ..
The grass root cutter 9a is attached to the main handle 2 with a fastening member 9b that also serves as a weight, a fastening member 9c such as a cap nut, and a bolt 9d. At this time, the bolt 9d is screwed into the screw hole of the fastening member 9b that also serves as a weight. After that, by tightening with the fastening member 9c, it has a double nut effect and prevents loosening, and since the main handle 2 is attached by aligning it with the groove, it can be easily aligned, and it has a structure that does not shift during use and also serves as a weight. The fastening member 9b has a support portion 5a width aligned with the groove of the grass root cutting tool 9a, and also has a purpose of closely contacting and covering the main handle 2.
The grass root cutting tool 9a is easy to process and has an advantage in terms of cost if it is machined using a raw material such as spring steel because of its thickness, width, material, weight of weight, and shape of parts. The hardness is HRC35-55, but rust countermeasures are required and plating, painting, etc. are performed, but the hardness is not limited to this.

8 and 9 are still another embodiment of the carpet beater 9e. The carpet beater 9e is attached with a grooved upper weight 9f, a lower weight 9g, a fastening member 9c, and a bolt 9d, and has a slightly different structure. Similar to the grassroots cutting tool 9a, it has a structure that does not cause deviation or loosen during use.
In addition, the weight of the action tool 9 that also serves as this weight should be the weight required for snapping when performing the swinging work during use, but it differs depending on the operator, so prepare a spare weight. It is better, and it is better, but not limited to, to adjust the fixed position of the space member 11 of the main handle 2 to match the swing of the user.

10 to 11 show a working tool 20 with a grass root cutting according to an embodiment of the present invention. This grass root cutting tool is provided with a blade portion 20b at the tip of the main handle 2, and an extension virtual line of the main handle 2 and the blade portion 20b. The bending angle 20c formed by the extension virtual line is 95 ° to 135 °, but if it is 100 ° to 115 °, it is easy to drive and it is easy to drive deeply. However, it is difficult to drive and the work cannot be done smoothly, and when the bending angle 20c is close to 95 °, the bending angle 20c is easily bent back. However, it is not limited to this because it depends on the working posture.
Further, the main handle 2 is provided with a mounting hole 7b for the action tool mounting portion 7, and the vertical weight is mounted, and the bending R portion is covered with the vertical weight to prevent it from being bent back during use. Further, a groove is machined in the lower weight 20d, and the upper weight 20e enters the groove with almost no gap and is in close contact with the main handle 2 and fastened with the fastening member 9c, the bolt 9d, etc. to stabilize the mounting, and the blade portion 20b It has the effect of preventing deformation, but it can be used without a groove, which is not limited to this.
This structure is an example devised for the purpose of providing an inexpensive grassroots working tool 20.

Further, with respect to the work tool 20 with a root cutting tool shown in FIGS. 10 to 11, about 3 similar products were made and a weeding test was conducted in the lawn.
That is, the main handle 2 and the auxiliary handle 3 are SUS304CSP-H, plate thicknesses 0.8 and 1.0 mm, plate widths 15 and 20 mm, total length 330 mm, blade portion 20 blade length 45 mm, and bending angle 20c 95. Tested with ° to 120 °, bending R3 to 4R, vertical weight 20d, 20e total 90 to 140 grams.
When the work tool 20 with the grass root cutting tool of the present invention is used in a state where elasticity does not work (a rigid iron rod is fixed with tape), the evaluation is different between the healthy person and the handicapped person, but about 5 people with disabilities My wrist hurt in a minute, but when I used the work tool 20 with a grass root cutting tool in a state of elastic flexion, there was less pain for 60 minutes or more and I was able to work continuously.
There is a synergistic effect of striking by utilizing the snaps of the main handle 2 and the auxiliary handle 3 of the elastic material, and by providing the damper member 5b at the position where the main handle 2 and the auxiliary handle 3 are joined to the grip body 5. It was.

The working tool 1 of the present invention can be used as a shoulder tapping tool, a hammer, etc. by making various ideas for the working tool 9 at the tip portion. A user-friendly elastic material that has the main configuration of the fixing member 12 between the main handle 2 and the auxiliary handle 3 and the damper member 5b provided on the grip, and can alleviate the transmission of vibrations and shocks applied to the fingers and wrists. It is a work tool 1 that makes use of the main handle 2 of the above.

1 Work tool 2 Main handle 3 Auxiliary handle 5 Grip body 5a Support part 5b Damper member 5c Fastening bolt Nut 5d Through hole 5e Support member (long hole part where support member enters)
5f Joining position 7 Working tool mounting part 7b Mounting hole 9 Working tool that doubles as a weight 9a Grassroots cutting tool 9b Upper weight that doubles as a weight (fastening member)
9c Fastening member (cap nut)
9d Bolt 9e Carpet beater 9f Grooved upper weight (fastening member)
9g Lower weight 11 Space member 12 Fixing member 20 Work tool with grassroots cutting tool 20b Blade 20c Bending angle 20d Lower weight 20e Fastening member that also serves as upper weight

Claims (5)

A work tool with an elastic handle that hits or drives an object by the user's swinging motion.
Grip body and
A main handle that is extended by attaching one end of the elastic handle to the grip body and can swing by swinging operation.
It is composed of an action tool provided on the other end side of the main handle and also serving as a weight for striking or striking an object by a striking motion.
An elastically deformable auxiliary handle that has a mounting portion on the other end side of the main handle to which the working tool can be mounted and is arranged so as to overlap the main handle.
A movement-adjustable fixing member that changes the position for fixing both the main handle and the auxiliary handle is provided.
The grip body has a support portion for attaching and fixing one end of the main handle and the auxiliary handle, and
A working tool that extends to this support portion and is provided with a damper member at least at a joint position between the main handle and the auxiliary handle. The work according to claim 1, wherein a space member made of a cushion material is provided between the main handle and the auxiliary handle when the main handle and the auxiliary handle are overlapped and the positions are changed and fixed. Ingredients. The work tool according to claim 1 or 2, wherein the working tool has a groove and a mounting hole that can be attached and detached as a weight, and is mounted on the mounting portion on the other end side of the main handle. According to claim 1 or 2, the attachment portion on the other end side of the main handle can be replaced with a grassroots cutting tool or a bedding beater that can be attached to and detached from the main handle as an acting tool. Described work tools. When the working tool is a grass root cutting tool, a grass root cutting blade is used at the tip, and the root cutting blade has a bending angle of 95 ° to 135 ° between the extension virtual line of the main handle and the extension virtual line of the blade. The working tool according to claim 1 or 2.

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