TWM574382U - Labor saving gardening shears - Google Patents

Abstract

A labor-saving gardening shear, which pivotally connects the main cutting edge and the auxiliary cutting edge with a pivot member, and a first grip is extended at the lower end of the auxiliary cutting edge. A sector-shaped tooth block is located between the main cutting edge and a second grip, using two rivet elements between the gear surface of the sector-shaped tooth block and the tooth wall of the auxiliary cutting edge, and against a limit position of the main cutting edge On the inner edge of the guide groove, the fixing element is used to fix the main cutting edge, the sector-shaped tooth block and the second grip; wherein, the gear surface is corresponding to the tooth wall, and the first grip and the first The two grips drive the pin gears of the two adjacent rivet elements to bite each other, so that the sector-shaped tooth block rotates and moves along the tooth wall, and the two rivet elements are displaced by a limit position and pivot in the limit guide groove. The rotation of the shaft makes the main cutting edge and the auxiliary cutting edge move together.

Description

Labor-saving garden shears

This creation is about labor-saving garden shears, especially a labor-saving garden shear that can increase the structural stability of stability and the operation method of complex lever to achieve more labor-saving operation.

In order to beautify the environment and increase the greenery in the home environment or company or park, many flowers and shrubs and even large trees are planted to improve the atmosphere of the entire living environment. The flowers and shrubs will grow arbitrarily with the time of planting And spread out, you must do timely pruning to increase its beauty, and prevent aging branches from falling and hurting people. However, some branches are hard and difficult to prune. You must use garden shears to pruning work, so that you can quickly and Cut off rough branches easily.

There are garden shears with various structural designs in the house. In order to make the operation more convenient for users, the garden shears with energy-saving functions are designed. As shown in FIG. 1, it is a schematic structural diagram of a prior art garden shear. The garden shear includes a first blade body 10 and a second blade body 12, and a first tooth portion 102 is provided on the outer side of the first blade body 10, and The first blade body 10 extends with a first handle 104, the second blade body 12 and a second handle 14 are pivotally connected, and the front end of the second handle 14 is provided with a second tooth portion 142, the first The tooth portion 102 and the second tooth portion 142 mesh with each other to create an interlocking relationship. With the interlocking and interlocking structure of the first tooth portion 102 and the second tooth portion 142, the effect of labor-saving use of garden shears is achieved.

However, the above garden shear structure design is actually tooth-to-tooth engagement. When force is applied to shear and a reaction force is generated, the reaction force will be concentrated on the unilateral first tooth portion 102 and the second tooth portion 142 to mesh Can not be spread out from the bilateral average, so that the cutting action is easily affected by the unilateral force concentration, resulting in unsteady action, and the second grip 14 must be very open when cutting branches (close to 180 degree angle), if this also allows the user's arms to open too much, so that it is not easy to apply force to close the second grip 14 during the initial cutting so that the first knife body 10 and the second knife body 12 clip the branches, that is, they cannot It is for the user to apply the force at the opening angle of the optimal force application of the arm, which is not ergonomic and does not conform to the action of the user's human body for easy force control.

In view of this, the author proposes a labor-saving garden shear to effectively overcome the aforementioned problems in view of the above-mentioned lack of prior art.

The main purpose of this creation is to provide a labor-saving gardening shear, which is a novel structural design that uses the tooth wall of the secondary cutting edge, the fan-shaped tooth block and the pin gear of the rivet element to bite and rotate to convey the shearing power, making the use more Less effort and more efficient application.

Another purpose of this creation is to provide a labor-saving garden shears, which uses the structure design of the limit guide groove of the main cutting edge, not only allows the operation to limit the unfolding movement angle, but also can directly see the two rivet elements through the limit guide groove The action relationship between the fan-shaped tooth block and the tooth wall of the secondary cutting edge, thereby providing the user with the ability to open the two grips to the best angle of application, to trim the branches easily and effortlessly, and to watch at the same time. The unfolded angle state further improves the disadvantages of the prior art that the handle is excessively spread and is not easy to control, and the effect of labor-saving use of the garden shears is indeed achieved.

To achieve the above purpose, this creation provides a labor-saving garden shears, which includes a main cutting edge, a pair of cutting edges, a pivot member, a second grip, a first rivet element, a second rivet element, a Sector tooth block and a fixing element. The lower end of the main cutting edge extends a mounting part, and the mounting part is provided with a limit guide groove; the lower end of the auxiliary cutting edge extends a first handle, the auxiliary cutting edge has a tooth wall; the pivot member pivotally connects the main cutting edge and the auxiliary shear Blade, and the main cutting edge and the auxiliary cutting edge are in a misaligned overlapping position; the second grip has a first hole and a second hole; the first rivet element has a first pin gear, and the second rivet element has a second Pin gear; the sector-shaped tooth block is located between the main cutting edge and the second grip, the arc-shaped upper edge of the sector-shaped tooth block has a gear surface, the gear surface abuts against the tooth wall, and the first rivet element is threaded on the first In the hole, the second rivet element is penetrated in the second hole, and the first pin gear and the second pin gear are located adjacent to the tooth wall and between the gear surface and the tooth wall, so that the first rivet element One end can abut on the inner edge of the limit guide groove; and the fixing element fixedly connects the main cutting edge, the sector-shaped tooth block and the second grip, and the sector-shaped tooth block is located between the main cutting edge and the second grip, by Applying force to the first grip and the second grip to drive the first pin gear and the second pin gear to mesh with each other, so that the sector-shaped tooth block rotates and moves along the tooth wall, and at the same time, the first rivet element and the second rivet element The displacement of a limit position in the limit guide groove and the rotation of the pivot member enable the main shearing blade and the secondary shearing blade to cooperate, making the application more efficient and labor-saving.

Wherein, the limit guide groove is an arc-shaped opening, and the arc-shaped opening is a part of the fan-shaped tooth block, part of the auxiliary cutting edge and its tooth wall, one end of the first rivet element abuts on the inner edge of the limit guide groove, Let the user directly see through the arc-shaped opening that the internal two rivet elements are located in the action relationship between the sector-shaped tooth block and the tooth wall of the auxiliary cutting edge, and then know the state of the unfolding angle when cutting.

Among them, the main cutting edge and the auxiliary cutting edge are metal sheet bodies, and a long blade portion or an arc-shaped blade portion can be formed at the front end, no matter what kind of blade structure design, with the tooth wall of the auxiliary cutting edge of this creation , The pin gear of the fan-shaped tooth block and the two rivet elements are designed to convey the shearing power, and the special structure design can achieve the effect of labor-saving cutting.

The detailed description will be given below through specific embodiments, so that it is easier to understand the purpose, technical content, characteristics and effects of the creation.

In order to solve the problems of the existing various garden shears that are not easy to apply force to cut, which does not meet the user's ergonomics and the structural stability is poor and easy to damage, the inventor has used innovative structural design after years of research and development It allows users to cut tree branches with less effort, higher structural stability, and extended service life. It has many application advantages, based on which to improve the criticism of existing products. The follow-up will introduce in detail how this creation can be achieved with a novel labor-saving garden shear The most efficient functional appeal.

Please refer to Figure 2 and Figure 3, respectively, for the structural schematic and exploded view of the labor-saving garden shears created by the author. Firstly, the novel structural design of this creation will be described in detail. The labor-saving garden shears include a main cutting edge 20, a pair of cutting edges 22, a pivot member 24, a second grip 26, a sector-shaped tooth block 28 and a fixing element 30. A mounting portion 32 extends from the lower end of the main cutting edge 20. The mounting portion 32 is provided with a limiting guide groove 322 and a shaft hole 324. The shaft hole 324 is located below the limiting guide groove 322. A first handle 34 extends from the lower end of the auxiliary cutting edge 22, and a tooth wall 222 is further provided at the middle of the auxiliary cutting edge 22. The mounting portion 32 of the main cutting edge 20 further has a first positioning hole 326, the auxiliary cutting edge 22 further has a second positioning hole 224, and the first positioning hole 326 corresponds to the position of the second positioning hole 224, by the pivot member 24 The first positioning hole 326 to the second positioning hole 224 are penetrated to pivotally connect the main cutting edge 20 and the auxiliary cutting edge 22, and the main cutting edge 20 and the auxiliary cutting edge 22 are in a misaligned overlapping position. The pivot member 24 includes a positioning bolt 242 and a locking nut 244. The positioning bolt 242 penetrates the first positioning hole 326 into the second positioning hole 224 and protrudes from one side of the second positioning hole 224. The locking nut 244 is locked on the positioning bolt 242 to pivotally fix the main cutting edge 20 and the auxiliary cutting edge 22.

Next, the second grip 26 has a first hole 261, a second hole 262, and a first fixing hole 264; the arcuate upper edge of the sector-shaped tooth block 28 has a gear surface 282, which corresponds to the tooth On the wall 222, the sector-shaped tooth block 28 has a second fixing hole 284, and the fixing element 30 further has a tooth column 302, and the fixing element 30 sequentially passes through the shaft hole 324, the second fixing hole 284, and the first fixing hole 264, Moreover, the tooth column 302 is located at a tooth portion (not shown) in the first fixing hole 264 and the second fixing hole 284; thereby, the sector-shaped tooth block 28 can be fixed at the mounting portion 32 and the second grip of the main cutting edge 20 Between the shank 26, the sector-shaped tooth block 28 is positioned on the tooth wall 222 of the secondary cutting edge 22. Among them, the tooth column 302 of the fixing element 30 is matched with the tooth system, so the stability between the main cutting edge 20 and the second grip 26 can be increased. The fixing element 30 may further include a fixing cap 304. When the tooth column 302 is threaded into a tooth portion in the second fixing hole 264, the fixing cap 304 is correspondingly inserted into the fitting hole 306 of the tooth column 302. The fitting hole 306 is located at the center point of the tooth column 302, and is fixed to one side of the second grip 26 by the fixing cap 304, and the tooth shape of the tooth part corresponds to the tooth column 302, so that the tooth part is meshed and fixed to the tooth column 302, can further improve the structural stability of the overall garden shears.

Next, the first rivet element 35 is correspondingly penetrated into the first hole 261, and the second rivet element 36 is correspondingly penetrated into the second hole 262, wherein the first rivet element 35 has a first pin gear 352, the second The rivet element 36 has a second pin gear 362, and the first pin gear 352 and the second pin gear 362 are located adjacent to the tooth wall 222 and between the upper edge of the gear surface 282 and the tooth wall 222, and The first rivet element 35 abuts the inner edge of the limiting guide groove 322. Among them, the first pin gear 34 and the second pin gear 362 can be driven to force the first pin gear 352 and the second pin gear 362 to bite each other, so that the sector-shaped tooth block 28 rotates and moves along the tooth wall 222 At the same time, the first rivet element 35 and the second rivet element 36 are displaced by a limit position in the limit guide groove 322, and the pivot member 24 rotates, so that the main shearing blade 20 and the auxiliary shearing blade 22 are opened and cooperated, so that The application is more efficient and more labor-saving.

In order to further understand that this creation can indeed achieve a labor-saving effect on cutting, it will be described in detail later. Please refer to Figure 3 and Figures 4A to 4D at the same time. Figures 4A to 4C are schematic views of the use of each step of creation. When the user wants to cut an object, such as a branch, as shown in FIG. 4A, the state of the labor-saving garden shears before use is that the main cutting edge 20 and the auxiliary cutting edge 22 are misaligned and overlapped to allow the user to directly view the use state Therefore, the limiting guide groove 322 of the mounting portion 32 is an arc-shaped opening, and the arc-shaped opening is exposed part of the sector-shaped tooth block 28, part of the auxiliary cutting edge 22 and its tooth wall 222, one end of the first rivet element 35 abuts the limit On the inner edge of the positioning guide groove 322; the opening width of the limiting guide groove 322 is larger than the area of the tooth surface 222 and the gear surface 282 of the sector-shaped tooth block 28. The limiting guide groove 322 has a limiting position A and a limiting position B at both ends. When the labor-saving garden shears are not used, the first rivet element 35 is limited to the position A. As shown in FIG. 4B again, when the user applies force to pull the first handle 34 and the second handle 26 outward, the main cutting blade 20 and the auxiliary cutting blade 22 are linked, thereby driving the first pin gear 352 and the second pin The gears 362 bite each other, so that the sector-shaped tooth block 28 rotates and moves along the tooth wall 222, and at the same time, the first rivet element 35 and the second rivet element 36 are displaced in the limit guide groove 322 by a limit position and the pivot The rotation of the piece 24 causes the main cutting edge 20 and the auxiliary cutting edge 22 to expand at an angle. When the displacement limit position is larger, it means that the main cutting edge 20 and the auxiliary cutting edge 22 are expanded at a larger angle. Then, as shown in FIG. 4C, when the user pulls the first grip 34 and the second grip 26 outward, the first pin gear 352 and the second pin gear 362 bite each other to make the sector-shaped tooth block 28 is rotated and displaced along the tooth wall 222, while the first rivet element 35 and the second rivet element 36 are displaced from the end point of the limit position A to the end point of the limit position B in the limit guide groove 322, at this time the main The cutting blade 20 and the auxiliary cutting blade 22 exhibit the largest unfolding angle. This creation can be adjusted steplessly according to the needs of the user. By applying left and right pulling on the first handle 34 and the second handle 26 to perform the expansion and closing movements, the fan-shaped tooth block 28 is allowed to follow the tooth The wall 222 is rotated and displaced, and at the same time, the first rivet element 35 and the second rivet element 36 are displaced in the limit guide groove 322 to control the angle between the main cutting edge 20 and the auxiliary cutting edge 22 to meet the actual cutting requirements. It has the effect of simple adjustment and convenient use.

Then, as shown in FIG. 4D, when the user cuts a branch 38, by applying force to the first handle 34 and the second handle 26, the left and right pulls are respectively extended to the main cutting edge 20 and the auxiliary shear The required angle between the blades 22, here taking the maximum angle of deployment as an example, the second rivet element 36 is located in the limit position B in the limit guide groove 322. This creation uses the principle of complex levers to perform labor-saving operations. For example, as a first set of lever elements, there are a second grip 26, a fixed element 30, and a pivot 24, and as a second set of lever elements, there are a first handle 34 and For the pivot member 24, the first and second sets of lever elements are engaged with the tooth wall 222 of the first handle 34 through the sector-shaped tooth block 28. When the user applies inward pressure on the first handle 34 and the second handle 26, the force applying arms a, c will be much larger than the resistance arms b, d; in other words, the second handle 26 drives the first pin gear 352 and the second pin gear 362 bite each other, so that the gear surface 282 of the sector-shaped tooth block 28 rotates along the tooth wall 222 of the first handle 34, and the first rivet element 35 and the second rivet element 36 are The limit guide groove 322 moves from the limit position B to the limit position A, and the pivot 24 rotates to reduce the angle between the main cutting edge 20 and the auxiliary cutting edge 22 and cut the branch 38. By the force of the force applying arm a, c is much larger than the resistance arm b, d, it can significantly increase the support force and friction ratio, and then improve the effect of torque and labor-saving cutting.

Furthermore, in actual use, the main cutting edge 20 and the auxiliary cutting edge 22 rotate around the pivot 24, so that the main cutting edge 20 and the second grip 26 can be unfolded with force, and then use The first rivet element 35 and the second rivet element 36 are translated in an arc-shaped curve within the design range of the limit guide groove 322, which can not only limit the maximum extent of unfolding, so as to avoid excessive unfolding during use and cutting action. Smooth and laborious long-distance pivoting. It is more noteworthy that the first pin gear 352 and the second pin gear 362 are located adjacent to the tooth wall 222, and they bite each other when they are actuated, which can also prevent the gear from turning out during operation and causing the teeth to be dislocated. Disadvantages. Furthermore, through the arc-shaped opening design of the novel limiting guide groove 322, the sector-shaped tooth block 28, the auxiliary cutting edge 22 and its tooth wall 222, the first rivet element 35 and the second rivet element 36 are partially exposed, while providing The user directly observes the use status and prolongs the service life of the overall structure and many other advantages.

Please refer to Figure 2 and Figure 5 at the same time. Figure 5 is a schematic structural view of a labor-saving garden shear with a telescopic handle sleeve. The main cutting edge 20 and the auxiliary cutting edge 22 of the labor-saving garden shears in this creation are designed as metal sheets, and an arc-shaped blade is formed at the front end, which can cut thicker branches and other objects. The labor-saving garden shears further include two telescopic handles A sleeve, a first telescopic handle sleeve 40 and a second telescopic handle sleeve 42, the first telescopic handle sleeve 40 is sleeved on the first grip 34, and the second telescopic handle sleeve 42 is sleeved on the second grip 26. Both the first telescopic handle sleeve 40 and the second telescopic handle sleeve 42 are provided with at least one set of tubes 44, and the first telescopic handle sleeve 40 and the second telescopic handle sleeve 42 can each further be provided with a control button 46, which can control at least one The length of the sleeve 44 extends, so that the user can arbitrarily adjust the length of the labor-saving garden shears, which is convenient for cutting branches at high places.

In addition to designing a cutting edge that can trim thicker branches and other objects, as shown in Figure 6, it is another structural schematic of the labor-saving garden shears for creating a telescopic handle cover. The main cutting edge 20 and the auxiliary cutting edge 22 of the labor-saving garden shears in this creation are designed as metal sheets, and a long blade portion is formed at the front end, which can facilitate the cutting of smaller plants and other objects. The labor-saving garden shears also include two telescopic handles A sleeve, a first telescopic handle sleeve 40 and a second telescopic handle sleeve 42, the first telescopic handle sleeve 40 is sleeved on the first grip 34, and the second telescopic handle sleeve 42 is sleeved on the second grip 26. Both the first telescopic handle sleeve 40 and the second telescopic handle sleeve 42 are provided with at least one set of tubes 44, and the first telescopic handle sleeve 40 and the second telescopic handle sleeve 42 can each further be provided with a control button 46, which can control at least one The length of the sleeve 44 extends, so that the user can arbitrarily adjust the length of the labor-saving garden shears, which is convenient for cutting tall vegetation.

Of course, in addition to the design of the above-mentioned labor-saving garden shears using two telescopic handle sleeves, two single-section handle sleeves can also be used, which are sleeved on the first grip and the second grip, respectively, so that the user can cut the height Trees and plants.

In summary, this creation uses the structural design of the limit guide groove of the main cutting edge, which not only allows the operation to limit the deployment angle of movement, but also increases the smoothness of the operation, and can directly see the first guide through the limit guide groove. A rivet element and a second rivet element are located between the sector-shaped tooth block and the tooth wall of the auxiliary cutting edge, thereby providing the user with the ability to open the two grips to the optimal force angle for stepless operation In order to cut the branches easily and effortlessly, you can also view the state of the unfolded angle at the same time, which improves the shortcomings of the existing technology because it is too open and difficult to control. Furthermore, the limit guide groove can cover part of the gear structure, which can avoid the influence of the branches on the function and even damage during operation. In addition, the special structure design of the tooth gear wall, the sector-shaped tooth block and the pin gears of the first rivet element and the second rivet element to convey the shearing force makes the use more labor-saving and more efficient application; in detail, the first The pin gears of the rivet element and the second rivet element are matched and meshed with the sector-shaped tooth block and the tooth tooth wall system, so it can increase the stability between the main cutting edge and the second grip, and can also prevent the gear from turning out and causing the tooth loss phenomenon In addition, the novel design of the limit guide groove can be used to open, close and cut within a fixed range, which can improve the certainty of use and have a competitive advantage in the market.

The above are only preferred embodiments of this creation, and are not intended to limit the scope of this creation. Therefore, any changes or modifications based on the characteristics and spirit described in the scope of this creative application should be included in the scope of the patent application for this creative.

10‧‧‧The first knife body

102‧‧‧The first tooth

104‧‧‧First grip

12‧‧‧The second blade

14‧‧‧second grip

142‧‧‧Second tooth

20‧‧‧Main cutting edge

22‧‧‧Scissors

222‧‧‧tooth wall

224‧‧‧Second positioning hole

24‧‧‧Pivot parts

242‧‧‧Locating bolt

244‧‧‧Lock nut

26‧‧‧Second grip

261‧‧‧First hole

262‧‧‧The second hole

264‧‧‧First fixing hole

28‧‧‧Fan-shaped tooth block

282‧‧‧Gear surface

284‧‧‧Second fixing hole

30‧‧‧Fixed components

302‧‧‧Pillar

304‧‧‧Fixed cap

306‧‧‧Mating hole

32‧‧‧Installation Department

322‧‧‧Limit guide groove

324‧‧‧Shaft hole

326‧‧‧First positioning hole

34‧‧‧First grip

35‧‧‧The first rivet element

352‧‧‧ First pin gear

36‧‧‧Second rivet element

362‧‧‧Second pin gear

38‧‧‧Branch

40‧‧‧First telescopic handle sleeve

42‧‧‧Second telescopic handle sleeve

44‧‧‧Casing

46‧‧‧Control button

Figure 1 is a schematic diagram of the structure of the prior art garden shears. Figure 2 is a schematic diagram of the structure of the labor-saving garden shears. Figure 3 is an exploded view of the structure of Figure 2. Figures 4A to 4D are schematic diagrams of the use of each step of creation. Figure 5 is a schematic view of the structure of a labor-saving garden shear with a telescopic handle sleeve. Figure 6 is another schematic diagram of the labor-saving garden shears created by the author.

Claims (10)

A labor-saving gardening shears, comprising: a main cutting edge, a lower end of which extends a mounting portion, the mounting portion is provided with a limit guide groove; a pair of cutting edges, a lower end of which extends a first grip, the secondary cutting edge has a tooth Tooth wall; a pivot member pivotally connecting the main cutting edge and the auxiliary cutting edge, and the main cutting edge and the auxiliary cutting edge are in a misaligned overlapping position; a second grip, which has a first hole and A second hole; a first rivet element with a first pin gear; a second rivet element with a second pin gear; a sector tooth block located between the main cutting edge and the second grip, The arc-shaped upper edge of the sector-shaped tooth block has a gear surface, which corresponds to the tooth wall, the first rivet element is inserted into the first hole, and the second rivet element is inserted through the first Two holes, and the first pin gear and the second pin gear are located on the tooth wall adjacent to and between the gear surface and the tooth wall, and abut against the inner edge of the limit guide groove Upper; and a fixing element, which is fixedly connected to the main cutting edge, the sector-shaped tooth block and the second grip, by applying force to the first grip and the second grip to drive the first pin gear and the The second pin gears bite each other so that the sector-shaped tooth block rotates and moves along the tooth wall, and at the same time, the first rivet element and the second rivet element are displaced by a limit position in the limit guide groove, and The pivot member rotates so that the main cutting edge and the auxiliary cutting edge cooperate with each other. The labor-saving garden shears according to claim 1, wherein the limiting guide groove is an arc-shaped opening, and the arc-shaped opening is a part of the sector-shaped tooth block, part of the auxiliary cutting edge and the tooth wall thereof, the first One end of the rivet element abuts on the inner edge of the limiting guide groove. The labor-saving garden shears according to claim 1, wherein the opening width of the limiting guide groove is larger than the area of the tooth wall and the gear surface. The labor-saving garden shears according to claim 1, wherein the main cutting edge further has a first positioning hole, the auxiliary cutting edge further has a second positioning hole corresponding to the first positioning hole, and the pivot member is penetrated through In the first positioning hole and the second positioning hole, the main cutting edge and the auxiliary cutting edge are pivotally fixed. The labor-saving garden shears according to claim 4, wherein the pivot member includes a positioning bolt and a locking nut, the positioning bolt penetrates the first positioning hole into the second positioning hole and protrudes from the One side of the second positioning hole is locked to the positioning bolt with the locking nut to pivotally fix the main cutting edge and the auxiliary cutting edge. The labor-saving garden shears according to claim 1, wherein the main cutting edge is further provided with a shaft hole, the second grip is further provided with a first fixing hole, and the sector-shaped tooth block is further provided with a second fixing hole, the fixing element The shaft hole, the second fixing hole and the first fixing hole are sequentially penetrated to connect the main cutting edge, the sector-shaped tooth block and the second grip. The labor-saving garden shears according to claim 6, wherein the fixing element is a latch element having a tooth column, and a tooth portion located in the second fixing hole and the first fixing hole is fixed. The labor-saving garden shears according to claim 1, wherein the tooth shape of the tooth wall corresponds to the first pin gear and the second pin gear, so that the engagement limit of the first pin gear and the second pin gear is located at the tooth On the tooth wall. The labor-saving garden shears according to claim 1, wherein the main cutting blade and the auxiliary cutting blade are metal sheet bodies, and a long blade portion or an arc-shaped blade portion is formed at the front end. The labor-saving garden shears according to claim 1, further comprising two single-segment handle sleeves or two telescopic handle sleeves, the two single-segment handle sleeves are sleeved on the first grip and the second grip, respectively, or The two telescopic handle sleeves are sleeved on the first grip and the second grip, respectively.