Cutting tool
By designing a pivotable tool section and adjacent components for the cutting tool, the ergonomic and safety issues of existing cutting tools are solved, achieving lightweight and safe vertical cutting, suitable for cutting at heights.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-09-30
- Publication Date
- 2026-03-17
AI Technical Summary
Existing cutting tools suffer from poor ergonomics, excessive weight, insufficient safety, difficulty in making vertical cuts, and high risk of tearing, especially when cutting objects at heights.
A handheld cutting tool has been designed, including a cutting component and a power source. The tool part is pivotable about a pivot axis and is equipped with an adjoint to facilitate cutting. The power source is arranged inside the tool part, reducing the need for direct pressure on the object and achieving lightweight and safe cutting through reciprocating motion.
It achieves lightweight design, improved safety, and enhanced controllability, enabling simple and safe vertical cutting while reducing the risk of tearing. It is suitable for cutting at heights without needing to stand below the object being cut.
Smart Images

Figure CN118541250B_ABST
Abstract
Description
Technical Field
[0001] This disclosure relates to a handheld cutting tool including a power source configured to power a cutting component of the handheld cutting tool. Background Technology
[0002] Cutting can be performed using different types of cutting tools (such as chainsaws, circular saws, jigsaws, etc.). Different types of cutting tools have different advantages and disadvantages, and each cutting tool is usually best suited for a specific cutting task.
[0003] All types of cutting tools share some common challenges. One is related to ergonomics. That is, an advantage is when a user can use a cutting tool in a simple and ergonomic way. Another challenge concerns the weight of the cutting tool, which is somewhat similar to ergonomics. That is, a significant advantage is when a handheld cutting tool is designed to be lightweight, as the weight of a cutting tool puts pressure on the user's hands, arms, and back. However, due to the required components such as the tool itself and the power source supplying power to it, it can be difficult to design a lightweight cutting tool.
[0004] Another issue is safety. Specifically, cutting tools are preferably designed to be used safely. However, the need for sharp cutting edges and the high power of some types of cutting tools make it difficult to obtain safe tools. Furthermore, to cut an object using a cutting tool, the cutting unit must be pressed against the object with a certain force. This can be difficult to achieve with certain tools and in certain situations. Additionally, dangerous situations can occur when the cut object separates, as there is a risk of loss of control of the cutting tool upon completion of the cut. That is, when the cut is complete and the cut object separates, the reaction force gained from the contact between the cutting unit and the object is eliminated, which may cause the cutting tool to move unexpectedly along the cutting direction upon completion of the cut.
[0005] Chainsaws are typically powerful cutting tools capable of cutting trees and branches quickly and efficiently. However, for smaller jobs and more delicate cuts, other types of cutting tools, such as handsaws, may be more suitable. This is because chainsaws require a relatively powerful power source and are often heavy and large. Furthermore, chainsaws typically provide relatively coarse cuts. Therefore, professionals and gardeners often use smaller handsaws for certain tasks (such as when cutting smaller branches), even if a chainsaw is readily available to them. These smaller handsaws also provide cleaner and smoother cuts. However, using a handsaw is strenuous and can put stress on the user's hands and arms.
[0006] Another problem for professionals and gardeners is that some branches are located relatively high above the ground, making them difficult to reach without climbing the tree or using ladders, stools, etc. Climbing trees and using ladders, stools, etc., is strenuous, poses safety risks, and is not ergonomic. Therefore, some manufacturers have developed chain pole saws.
[0007] A lever chainsaw is a cutting tool that includes a lever with a handle at one end and a chainsaw unit at the other end. The length of the lever allows the user to cut relatively tall branches while standing on the ground. Therefore, the user can cut branches without climbing trees or using ladders, stools, or similar equipment.
[0008] A stick chainsaw can be a highly efficient tool for cutting branches. However, stick chainsaws also have some problems and drawbacks. One problem concerns weight. Specifically, the chainsaw unit requires a guide bar, a cutting chain, and a high-powered motor to rotate the cutting chain around the guide bar. Furthermore, most chainsaws are equipped with a lubrication system configured to lubricate the cutting chain, which also increases the weight and complexity of the chainsaw unit. Because the chainsaw unit is located at the end of the bar opposite the handle, the weight of the chainsaw unit often makes manipulating and supporting the stick chainsaw difficult and arduous during cutting.
[0009] Furthermore, as mentioned above, in order to cut an object using a cutting tool, the cutting unit of the tool must be pressed against the object with a certain force. Therefore, when using a lever chainsaw to cut branches relatively high off the ground, it may be difficult for the user to apply this force to the branch. Moreover, even if the user can apply this force, dangerous situations may occur, such as the user slipping. Additionally, dangerous situations may arise when the branch separates from the tree, because the user needs to support the saw while the branch is separating to prevent it from falling towards the ground. Furthermore, some users often stand under the branch being cut, which can be dangerous due to the branch falling. Another problem associated with lever chainsaws is the difficulty in selecting the appropriate cutting direction.
[0010] Another common problem related to cutting is tearing, which can occur when cutting branches. This is because the weight of the branch can cause it to separate from the tree before it is completely cut. If this happens, the branch typically separates from the tree along the direction of its wood fiber structure. The direction of the wood fiber structure is usually significantly different from the cutting plane of the cutting unit. Therefore, if a branch separates from the tree before it is completely cut, it is most likely to separate in an uneven separation plane. This separation is commonly referred to as tearing. Tearing should be avoided, if possible, for aesthetic reasons. Furthermore, tearing can negatively impact the tree's health compared to a branch separating from the tree in a flat cutting plane, due to the large area of wood exposed to the surrounding environment.
[0011] As is widely known among professionals and gardeners, branches can be separated from the tree by first making a bottom cut and then an top cut, thus avoiding tearing. A bottom cut is made on the underside of the branch, and a top cut is made on the top side. By making the bottom cut first and then the top cut, the risk of tearing is significantly reduced when the branch is separated from the tree. However, for many tools (such as a chain saw), making the bottom and top cuts in the manner described above is impossible, or at least extremely difficult.
[0012] Furthermore, in today's consumer market, it is generally advantageous if a product includes different features and functions, and at the same time has conditions and / or characteristics suitable for cost-effective manufacturing and assembly.
[0013] Furthermore, if the cutting tool can be designed to be energy-efficient, this is an advantage due to environmental concerns and because energy-efficient operation can reduce the size of the cutting component and the power source that powers it. Additionally, energy-efficient operation can reduce the size of energy storage units (such as fuel tanks or rechargeable batteries) while maintaining the cutting tool's available operating time. Summary of the Invention
[0014] The object of this invention is to overcome or at least mitigate some of the problems and disadvantages mentioned above.
[0015] According to one aspect of the invention, this objective is achieved by a handheld cutting tool comprising: a cutting member configured to reciprocate along a reciprocating motion axis; and a power source configured to provide power to the cutting member. The cutting tool also includes a body portion and a tool portion, the body portion including a handle. The tool portion includes the cutting member and a first abutting member having a first abutting surface configured to abut against an object during cutting with the cutting member. The tool portion is pivotally attached to the body portion about a pivot axis.
[0016] Because the tool portion of the cutting tool includes a first abutment member with a first abutment surface configured to abut against the object during cutting, the need for the user to apply force to the object is avoided or at least reduced. Furthermore, due to the first abutment member, the risk of loss of control over the cutting tool is significantly reduced during cutting and when the object being cut is separated.
[0017] Furthermore, since the tool portion is pivotally attached to the body portion about a pivot axis, a cutting tool is provided that allows the user to select the cutting direction simply, safely, and conveniently by pivoting the tool portion relative to the body portion and therefore also relative to the object being cut. Thus, due to the combination of the pivoting features of the first adjacent member and the tool portion, a cutting tool is provided that allows the user to perform upward and downward cuts on an object in a simple, safe, and ergonomic manner, thereby avoiding tearing.
[0018] Furthermore, since the cutting tool includes a cutting member configured to reciprocate along a reciprocating axis, a lighter cutting member can be utilized. Additionally, the cutting member is capable of performing clean and smooth cuts while consuming less energy. As a further result, the tool portion of the cutting tool can have a lighter weight. Furthermore, a smaller and lighter power source can be used to power the cutting member. Therefore, as a further result of these features, a lower-weight cutting tool is provided.
[0019] Therefore, overall, it provides a handheld cutting tool that can be used in a simpler, safer, and more ergonomic way.
[0020] Therefore, a handheld cutting tool is provided that overcomes or at least mitigates some of the problems and disadvantages mentioned above. Thus, the aforementioned objectives are achieved.
[0021] Optionally, the first adjacent surface has a surface normal pointing towards the cutting member. This further reduces the need for the user to apply force to the object being cut. This is because, during cutting, the object can be compressed between the first adjacent surface and the cutting member. As a further result, the cutting tool can be used in a more ergonomic and safer manner.
[0022] Optionally, the angle between the reciprocating motion axis and the first adjacent surface is in the range of 30 degrees to 85 degrees, or in the range of 45 degrees to 80 degrees. This further reduces the need for the user to apply force to the object being cut. This is because during cutting, the object can be efficiently compressed between the first adjacent surface and the cutting member. As a further result, the cutting tool can be used in a more ergonomic and safer manner.
[0023] Optionally, the cutting member is configured to cut an object in a cutting plane, wherein the angle between the pivot axis and the cutting plane is in the range of 60 degrees to 120 degrees, or in the range of 80 degrees to 100 degrees. Therefore, a cutting tool is provided that allows a user to select the cutting direction of the cutting member in a simple, safe, and convenient manner, thereby performing upward and downward cuts on the object in a simple, safe, and ergonomic way. Thus, the user can perform cuts in a manner that reduces the risk of tearing.
[0024] Optionally, the minimum distance between the reciprocating motion axis and the pivot axis is less than 10 cm, or less than 5 cm. Therefore, a cutting tool is provided in which the risk of accidental movement of the tool portion during and after cutting is reduced.
[0025] Optionally, the length of the main body portion is at least two or at least four times the length of the tool portion, wherein the length of the main body portion is measured from the first end of the cutting tool to the pivot axis, and the length of the tool portion is measured from the second end of the cutting tool to the pivot axis. Therefore, a handheld cutting tool is provided that enables the cutting of objects (such as tree branches) relatively high above the ground in a simpler, safer, and more ergonomic manner. Furthermore, since the tool portion of the cutting tool is pivotally attached to the main body portion about the pivot axis, a handheld cutting tool is provided that allows users to cut relatively high objects without standing directly beneath them. Thus, a handheld cutting tool is provided that allows users to cut objects more safely.
[0026] Furthermore, due to the first adjacent member, more controlled cutting can be performed, and the need for the user to apply force to the object being cut is reduced. As a further result, when cutting objects relatively high above the ground, the user is less likely to lose control of the handheld cutting tool. Moreover, because of the presence of the first adjacent member and the fact that the tool portion of the cutting tool is pivotally attached to the main body about a pivot axis, the user can perform upward and downward cuts simply, safely, and ergonomically, by pivoting the tool portion relative to the main body and therefore also relative to the object being cut during cutting.
[0027] Optionally, the main body includes a rod extending along the extension direction. Therefore, a handheld cutting tool is provided that enables the cutting of objects (such as tree branches) relatively high above the ground in a simpler, safer, and more ergonomic manner. Furthermore, since the tool portion of the cutting tool is pivotally attached to the main body about a pivot axis, a handheld cutting tool is provided that allows the user to cut relatively high objects without standing directly beneath them. Thus, a handheld cutting tool is provided that allows the user to cut objects in a safer manner.
[0028] Furthermore, due to the first adjacent member, more controlled cutting can be performed, and the need for the user to apply force to the object being cut is reduced. As a further result, when cutting objects relatively high above the ground, the user is less likely to lose control of the handheld cutting tool. Moreover, because of the presence of the first adjacent member and the fact that the tool portion of the cutting tool is pivotally attached to the main body about a pivot axis, the user can perform upward and downward cuts simply, safely, and ergonomically, by pivoting the tool portion relative to the main body and therefore also relative to the object being cut during cutting.
[0029] Optionally, the main body includes a handle portion having a handle, wherein the handle portion is disposed at a first end of the rod, and wherein the tool portion is pivotally attached to the main body at a second end of the rod. Because the tool portion is pivotally attached to the main body at the second end of the rod and has a lower weight, an elongated cutting tool is provided that enables more controlled and ergonomic cutting of objects relatively high above the ground.
[0030] Optionally, the main body extends along the elongation direction, and the tool portion is pivotable relative to the main body to a first pivot position, in which the reciprocating axis of the cutting member is substantially parallel to the elongation direction of the main body. Because the main body extends along the elongation direction, a handheld cutting tool is provided that can cut objects (such as tree branches) relatively high above the ground in a simpler, safer, and more ergonomic manner. Furthermore, because the tool portion of the cutting tool is pivotally attached to the main body about a pivot axis, a handheld cutting tool is provided that allows users to cut relatively high objects without standing directly beneath them. Therefore, a handheld cutting tool is provided that allows users to cut objects more safely.
[0031] Furthermore, due to the first adjacent member, more controlled cutting can be performed, and the need for the user to apply force to the object being cut is reduced. As a further result, when cutting objects relatively high above the ground, the user is less likely to lose control of the handheld cutting tool. Moreover, because of the presence of the first adjacent member and the fact that the tool portion of the cutting tool is pivotally attached to the main body about a pivot axis, the user can perform upward and downward cuts simply, safely, and ergonomically, by pivoting the tool portion relative to the main body and therefore also relative to the object being cut during cutting.
[0032] Furthermore, since the tool portion can pivot relative to the main body to a first pivot position, a handheld cutting tool that can be used in a simple and intuitive manner is provided.
[0033] Optionally, the cutting tool includes an elastic member configured to bias the tool portion relative to the body portion toward a predetermined pivot position. Thus, a handheld cutting tool that can be used in a more controllable and ergonomic manner is provided. Furthermore, a handheld cutting tool is provided in which the risk of accidental movement of the cutting tool during and after cutting is reduced.
[0034] Optionally, the predetermined pivot position coincides with the first pivot position. Therefore, a handheld cutting tool that can be used in a simple and intuitive manner is provided.
[0035] Optionally, the cutting tool includes a locking component that can switch between a locked state and an unlocked state. In the locked state, the locking component locks the tool portion to prevent it from pivoting about the pivot axis. In the unlocked state, the locking component allows the tool portion to pivot about the pivot axis. Therefore, a more general cutting tool is provided that allows the user to lock the tool portion to prevent it from pivoting while performing certain cutting tasks, and to unlock the tool portion to allow it to pivot while performing other cutting tasks.
[0036] Optionally, the power source is arranged in the tooling portion of the cutting tool. Therefore, a handheld cutting tool that can be manufactured and assembled in a cost-effective manner is provided. Furthermore, a handheld cutting tool with a lower overall weight is provided. This is because the need to transmit motion between the power source arranged in the main body and the cutting member arranged on the tooling portion is eliminated.
[0037] Optionally, the power source is an electric motor. Therefore, a handheld cutting tool that can be manufactured and assembled in a cost-effective manner is provided. Furthermore, a handheld cutting tool is provided in which the overall weight of the handheld cutting tool is low, and the weight of the tool portion of the cutting tool is also low. Additionally, a more controllable, user-friendly, and ergonomic elongating cutting tool can be provided.
[0038] Optionally, the main body includes a power supply device configured to supply power to a power source during operation of the cutting tool. This allows for a handheld cutting tool with a more advantageous weight distribution.
[0039] Optionally, the power supply device includes a rechargeable battery. This provides a user-friendly and ergonomic cutting tool.
[0040] Optionally, the cutting member includes a first cutting edge disposed on a first side of the cutting member relative to the reciprocating motion axis, and wherein the cutting member includes a second cutting edge disposed on a second side of the cutting member opposite to the first side of the cutting member. Thus, a more versatile handheld cutting tool is provided, allowing the user to cut using both sides of the cutting member.
[0041] Optionally, the cutting tool includes a second abutment member having a second abutting surface configured to abut against the object during cutting with the second cutting edge of the cutting member. Therefore, a more ergonomic and safer cut can also be performed using the second cutting edge of the cutting member. Furthermore, when an upward cut is completed using the first cutting edge of the cutting member, the second abutment member can prevent the tool portion of the cutting tool from falling towards the ground. Similarly, when an upward cut is completed using the second cutting edge of the cutting member, the first abutment member can prevent the tool portion of the cutting tool from falling towards the ground.
[0042] Optionally, the shape and / or size of the second adjacent member is the same as that of the first adjacent member. Therefore, a user-friendly handheld cutting tool is provided that allows the user to cut using the second cutting edge of the cutting member in the same manner as when cutting with the first cutting edge. Furthermore, when an upward cut is completed using the first cutting edge of the cutting member, the second adjacent member can prevent the tool portion of the cutting tool from falling towards the ground. Similarly, when an upward cut is completed using the second cutting edge of the cutting member, the first adjacent member can prevent the tool portion of the cutting tool from falling towards the ground.
[0043] Optionally, the first and second adjacent members together form a V-shape. Therefore, a safe and ergonomic cutting method is provided that can be performed using both sides of the cutting member. Furthermore, when cutting is completed using the cutting member, the V-shape formed by the first and second adjacent members can prevent the tool portion of the cutting tool from falling towards the ground.
[0044] Optionally, the shape and / or size of the second adjacent member differs from that of the first adjacent member. Therefore, a more versatile handheld cutting tool is provided that allows the user to utilize the first cutting edge of the cutting member when performing certain cutting tasks, and allows the user to utilize the second cutting edge of the cutting member when performing other cutting tasks.
[0045] Optionally, the cutting member includes a first end and a second end, wherein the cutting member is attached to the tool portion via the first end, and wherein the second end is a free end. Therefore, a simple and cost-effective handheld cutting tool is provided, allowing users to cut objects in a safer and more ergonomic manner. Furthermore, a lightweight cutting tool that operates in an energy-efficient manner is also provided.
[0046] Optionally, the cutting member is configured to move along a first direction and a second direction during reciprocating motion, the first direction pointing towards the tool portion and the second direction away from the tool portion, wherein the cutting member includes a plurality of teeth, each tooth being angled such that the cutting efficiency of the cutting member moving along the first direction is greater than the cutting efficiency of the cutting member moving along the second direction. Therefore, the need for the user to apply force to the object being cut is further reduced. Furthermore, the cutting member and the first adjacent member are more firmly held against the object being cut. This is because the cutting action of the cutting member pulls the object against the first adjacent member in one direction. As a further result, the cutting tool can be used in a more ergonomic and safer manner.
[0047] Other features and advantages of the invention will become apparent when examined in light of the appended claims and the following detailed description. Attached Figure Description
[0048] Various aspects of the invention, including specific features and advantages of these aspects, will be readily understood from the exemplary embodiments discussed in the following detailed description and accompanying drawings, in which:
[0049] Figure 1 A handheld cutting tool according to some embodiments is schematically shown.
[0050] Figure 2 It schematically shows the following based on Figure 1 An enlarged view of the tool portion of the handheld cutting tool of the embodiment shown in the illustration.
[0051] Figure 3a It shows that according to Figure 1 and Figure 2 The second side of the handheld cutting tool in the embodiment shown is wherein the tool portion is pivoted relative to the main body portion to a second pivot position.
[0052] Figure 3b It shows that according to Figures 1 to 3a The second side of the handheld cutting tool in the embodiment shown is wherein the tool portion is pivoted relative to the main body portion to a first pivot position.
[0053] Figure 3c It shows that according to Figures 1 to 3b The second side of the handheld cutting tool in the embodiment shown is wherein the tool portion pivots relative to the main body portion to a third pivot position.
[0054] Figure 4 It shows that according to Figures 1 to 3c The third side of the handheld cutting tool in the embodiment shown, and
[0055] Figure 5 An enlarged view of the tool portion of a handheld cutting tool according to some other embodiments is shown schematically. Detailed Implementation
[0056] Various aspects of the invention will now be described more fully. Throughout the text, the same reference numerals denote the same elements. For the sake of brevity and / or clarity, well-known functions or constructions will not be described in detail.
[0057] Figure 1 A handheld cutting tool 1 according to some embodiments of the present disclosure is schematically shown. According to the illustrated embodiment, the handheld cutting tool 1 includes a main body portion 2 extending along the elongation direction. More specifically, according to the illustrated embodiment, the main body portion 2 includes a rod 12. (See also...) Figure 1 As shown, the rod 12 also extends along the elongation direction. Therefore, the handheld cutting tool 1 according to the illustrated embodiment is a pole saw. Thus, the handheld cutting tool 1 mentioned herein can also be called a pole saw. However, according to other embodiments, the shape of the handheld cutting tool 1 mentioned herein may differ from that shown herein. Figure 1 The shape of the handheld cutting tool 1 in the embodiment shown.
[0058] The term "handheld" in "handheld cutting tool 1" indicates that the handheld cutting tool 1 is configured to be supported by one or both of the user's hands during operation. According to the illustrated embodiment, the handheld cutting tool 1 is preferably supported by both of the user's hands during operation, as further explained herein. For the sake of brevity and clarity, the handheld cutting tool 1 is referred to as "cutting tool 1" in some places herein.
[0059] The main body portion 2 of the cutting tool 1 includes handles 6 and 6'. Furthermore, the cutting tool 1 includes a tool portion 4. The tool portion 4 includes a cutting member 3. As further explained herein, the cutting member 3 is configured to reciprocate along a reciprocating axis. According to the illustrated embodiment, the main body portion 2 includes a handle portion 8, which includes the handle 6. The handle portion 8 is disposed at a first end 12' of the rod 12, and the tool portion 4 is pivotally attached to the main body portion 2 about a pivot axis at a second end 12" of the rod 12. Figure 1 In the diagram, portion 6' of lever 12 is schematically shown as a second handle of the cutting tool 1. During use of the cutting tool 1 according to the illustrated embodiment, the user can grip the handle 6 of handle portion 8 and portion 6' of lever 12 to support the cutting tool 1 during operation. Therefore, portion 6' of lever 12 can be used as a second handle of the cutting tool 1. The cutting tool 1 also includes a safety button 16 and a power control actuator 18 disposed on the handle 6 of the cutting tool 1.
[0060] Figure 2 It schematically shows the following based on Figure 1 An enlarged view of the tool portion 4 of the handheld cutting tool 1 in the illustrated embodiment. Furthermore, in Figure 2 In the image, a cross-section of the main body 2 of the handheld cutting tool 1 can be seen. Furthermore, in... Figure 2 In the image, the cutting component 3 can be seen more clearly. The tool part 4 includes the cutting component 3. Furthermore, as... Figure 2 As shown, the cutting member 3 is configured to reciprocate along the reciprocating motion axis Ra. The cutting tool 1 includes a power source 5 configured to provide power to the cutting member 3, that is, the power source is configured to cause the cutting member 3 to reciprocate along the reciprocating motion axis Ra during operation of the cutting tool 1. Since the cutting tool 1 includes a power source for providing power to the cutting member 3, the cutting tool 1 as mentioned herein may also be referred to as a "power tool", "handheld power tool", "handheld extension power tool", etc.
[0061] According to the illustrated embodiment, the power source 5 is arranged in the tool portion 4 of the cutting tool 1. Therefore, movement between the power source 5 and the cutting member 3 only requires transmission through a short distance across the cutting tool 1. According to the illustrated embodiment, the power source 5 is an electric motor. Thus, a cutting tool 1 that can be manufactured and assembled cost-effectively is provided. Furthermore, a cutting tool 1 is provided in which the overall weight of the cutting tool 1 and the weight of the tool portion 4 of the cutting tool 1 are both relatively light. According to the illustrated embodiment, the power source 5 is arranged inside the housing 4' of the tool portion 4. According to other embodiments, the power source 5 may be arranged in other ways relative to the tool portion 4. As an example, at least a portion of the power source 5 may protrude from the housing 4' of the tool portion 4.
[0062] refer to Figure 1 According to the illustrated embodiment, the main body portion 2 includes a power supply device 17. The power supply device 17 is configured to supply power to the power source 5 during operation of the cutting tool 1. More specifically, according to the illustrated embodiment, the power supply device 17 is arranged in the handle portion 8 of the cutting tool 1. The power supply device 17 may include a rechargeable battery. Because the power supply device 17 is arranged in the main body portion 2 of the cutting tool 1, a cutting tool 1 with a more advantageous weight distribution is provided.
[0063] like Figure 2 As shown, the tool portion 4 includes a first abutment member 10. The first abutment member 10 has a first abutment surface 10'. The first abutment surface 10' is configured to abut against the object 30 during cutting using the cutting member 3. Figure 2 In the diagram, an exemplary object 30 is shown in dashed lines. The first abutment member 10 is arranged such that when the object 30 is positioned between the first side s1 of the cutting member 3 and the first abutment member 10, and the tool portion 4 presses against the object 30, the first abutment surface 10' abuts against the object 30. Figure 2 As shown, according to the illustrated embodiment, the first adjacent surface 10' has a surface normal N1 pointing towards the cutting member 3.
[0064] More specifically, according to the illustrated embodiment, the angle α1 between the reciprocating motion axis Ra and the first adjacent surface 10' is approximately 57 degrees. According to other embodiments, the angle α1 between the reciprocating motion axis Ra and the first adjacent surface 10' can be in the range of 30 to 85 degrees, or in the range of 45 to 80 degrees. Therefore, the tool portion 4 of the cutting tool 1 can be securely held against the object 30 during its cutting process, as further explained herein.
[0065] As mentioned above, and as Figure 2As shown, the tool portion 4 is pivotally attached to the main body portion 2 about the pivot axis Pa. Figure 2 In, and Figure 2 In the diagram, the cutting tool 1 is shown with its viewing direction coinciding with the direction of the pivot axis Pa. Furthermore, as... Figure 2 As shown, the cutting member 3 is configured to cut the object 30 in the cutting plane Pc. Figure 2 In the middle, the cutting plane Pc is perpendicular to Figure 2 The observation direction is as follows. The cutting member 3 has a desired cutting direction extending in the cutting plane Pc. According to the illustrated embodiment, the angle between the pivot axis Pa and the cutting plane Pc is 90 degrees. According to other embodiments, the angle between the pivot axis Pa and the cutting plane Pc can be in the range of 60 degrees to 120 degrees, or in the range of 80 degrees to 100 degrees. This angle is in... Figure 4 The diagram is shown and further explained.
[0066] Furthermore, according to the illustrated embodiment, regardless of the pivoting position of the tool portion 4 relative to the main body portion 2, the reciprocating motion axis Ra of the cutting member 3 extends through the pivoting axis Pa. According to other embodiments, the cutting tool 1 can be arranged such that the minimum distance d0 between the reciprocating motion axis Ra and the pivoting axis Pa is less than 10 cm, or less than 5 cm. As understood from the above description, according to the illustrated embodiment, the minimum distance d0 between the reciprocating motion axis Ra and the pivoting axis Pa is zero centimeters.
[0067] exist Figure 2 The diagram shows the elongation direction de of the main body portion 2. Furthermore, in... Figure 2 In the illustration, the tool portion 4 is shown in a pivotal position relative to the main body portion 2, in which the reciprocating motion axis Ra of the cutting member 3 is parallel to the extension direction de of the main body portion 2. Therefore, according to the illustrated embodiment, the tool portion 4 can pivot relative to the main body portion 2 to a pivotal position in which the reciprocating motion axis Ra of the cutting member 3 is substantially parallel to the extension direction de of the main body portion 2. This pivotal position is hereinafter referred to as the first pivotal position of the tool portion 4. Figure 2 In the middle, the cutting tool 1 is shown from the first side.
[0068] Figure 3a It shows that according to Figure 1 and Figure 2 The second side of the handheld cutting tool 1 in the embodiment shown is wherein the tool portion 4 is pivoted relative to the main body portion 2 to a second pivot position. The second side of the handheld cutting tool 1 is opposite to the first side of the handheld cutting tool 1.
[0069] As in Figure 3aAs can be seen from the illustration, according to the shown embodiment, the cutting tool 1 includes an elastic member 13. The elastic member 13 is configured to bias the tool portion 4 of the cutting tool 1 relative to the body portion 2 toward a predetermined pivot position. According to the shown embodiment, this predetermined pivot position is... Figure 2 The first pivot position shown coincides with the pivot position shown. That is, according to the embodiment shown, the elastic member 13 is configured to bias the tool portion 4 of the cutting tool 1 toward a pivot position in which the reciprocating motion axis Ra of the cutting member 3 is substantially parallel to the elongation direction de of the main body portion 2.
[0070] exist Figure 2 In this configuration, the elastic member 13 is concealed behind the main body 2. For example, in... Figure 3a As can be seen, the elastic member 13 is connected to part 22 of the main body portion 2 and to part 14 of the tool portion 4. Part 14 of the tool portion 4 is positioned at a distance from the pivot axis Pa on the side of the tool portion 4 opposite to the cutting member 3. The elastic member 13 is configured to apply a contractile force between part 22 of the main body portion 2 and part 14 of the tool portion 4. Thus, the elastic member 13 tilts the tool portion 4 relative to the main body portion 2 toward a predetermined pivot position (i.e., according to the illustrated embodiment, toward...). Figure 2 The bias is shown in the first pivot position.
[0071] The elastic member 13 may include an elastomer, a spring, a coil spring, etc. According to other embodiments, the cutting tool 1 may include other types of elastic members 13 configured to bias the tool portion 4 relative to the body portion 2 toward a predetermined pivoting position, such as one or more elastic members disposed within the housing 4' of the tool portion 4 of the cutting tool 1. Furthermore, according to some embodiments, the elastic member 13 may include a damper arranged to dampen pivoting movement between the tool portion 4 and the body portion 2.
[0072] As in Figure 1 As can be seen, the main body portion 2 of the cutting tool 1 is significantly longer than the tool portion 4 of the cutting tool 1. More specifically, according to the illustrated embodiment, the length L1 of the main body portion 2, measured from the first end 1' of the cutting tool 1 to the pivot axis Pa, is approximately 8.3 times the length L2 of the tool portion 4, measured from the second end 1" of the cutting tool 1 to the pivot axis Pa. According to other embodiments, the length L1 of the main body portion 2, measured from the first end 1' of the cutting tool 1 to the pivot axis Pa, may be at least twice, or at least four times, the length L2 of the tool portion 4, measured from the second end 1" of the cutting tool 1 to the pivot axis Pa.
[0073] According to the illustrated embodiment, the total length L1+L2 of the cutting tool 1, measured between the first end 1' and the second end 1" of the cutting tool 1, is approximately 6 meters. According to other embodiments, the total length L1+L2 of the cutting tool 1, measured between the first end 1' and the second end 1" of the cutting tool 1, can be in the range of 1 meter to 10 meters, or in the range of 1.6 meters to 9 meters.
[0074] According to the illustrated embodiment, the length L3 of the rod 12, measured in the direction coinciding with its extension direction de, is approximately 67% of the length L1 of the main body portion 2 measured from the first end 1' of the cutting tool 1 to the pivot axis Pa. According to other embodiments, the length L3 of the rod 12, measured in the direction coinciding with its extension direction de, can be in the range of 20% to 99% of the length L1 of the main body portion 2 measured from the first end 1' of the cutting tool 1 to the pivot axis Pa, or it can be in the range of 47% to 87%. Furthermore, according to some embodiments, the cutting tool 1 can have a variable total length L1+L2, for example, by including a rod 12 with a variable length L3.
[0075] As understood above, the length L1 of the main body 2 is measured in a direction coinciding with the elongation direction de of the main body 2. Similarly, the length L3 of the rod 12 is measured in a direction coinciding with the elongation direction de of the rod 12. Furthermore, the total length L1+L2 of the cutting tool 1, measured between the first end 1' and the second end 1" of the cutting tool 1, is also measured in a direction coinciding with the elongation direction de of the main body 2. Moreover, the total length L1+L2 of the cutting tool 1 is measured when the tool part 4 is in a first pivot position relative to the main body 2, as... Figure 1 and Figure 2 As shown in the image.
[0076] The following section will describe a type of advantageous cutting process. Unless otherwise stated, please refer to [the relevant documentation / reference needed]. Figures 1 to 3a As understood from the description herein, cutting tool 1 can be used to cut objects relatively far from the ground without the need for ladders, stools, etc., to reach them. Reference Figure 3a The object 30 shown can be considered as a cross-section of a tree branch relatively far from the ground. Figure 3a The local gravity vector gv is shown in the image. The local gravity vector gv points towards the ground where the user can stand.
[0077] Users can start the cutting process by following these steps: Position the tool part 4 against the object 30 (e.g., ...). Figure 2As shown in the diagram, that is, when the tool portion 4 is in the first pivot position, and the object 30 is positioned in abutment to the cutting member 3 and the first abutment member 10. Then, the user can apply a force to the body portion 2 to obtain a torque about the pivot axis Pa, thereby pivoting the tool portion 4 relative to the body portion 2 to... Figure 3a The second pivot position is shown. Note that cutting tool 1 is in... Figure 2 and Figure 3a The middle part is shown from different sides. For example... Figure 3a As can be seen from this example, when the tool part 4 pivots to the second pivot position, the object 30 is positioned above the cutting member 3 when viewed relative to the local gravity vector gv.
[0078] Therefore, the user can pivot the tool portion 4 relative to the cutting member 3, so that the object 30 is positioned above the cutting member 3, and the cutting member 3 abuts against the lower side of the object 30. The user can then initiate cutting. According to the illustrated embodiment, the user can simultaneously press the safety button 16 located on the handle 6 of the cutting tool 1 and the power control actuator 18 (e.g., ...). Figure 1 (As shown in the image) to initiate the cutting.
[0079] As an alternative, users can access the tools section 4. Figure 2 Cutting can be initiated in the first pivot position shown, and the tool part 4 can be removed from... Figure 2 The first pivot position shown is towards Figure 3a The cutting member 3 is operated while pivoting to the second pivot position shown. In either case, the user will perform a so-called downcut, in which the lower side of the object 30 (i.e., the side of the object 30 facing the ground) is cut before the upper side of the object 30. The upper side of the object 30 is away from the ground. The user can operate the cutting member 3 for a period of time so that the object 30 is partially cut from its lower side. The user can then pivot the tool part 4 back to the first pivot position.
[0080] Figure 3b It shows that according to Figures 1 to 3a The second side of the handheld cutting tool 1 in the illustrated embodiment, wherein the tool portion 4 is pivoted relative to the main body portion 2 to a first pivot position. The user can... Figure 3a The second pivot position shown is towards Figure 3b The cutting member 3 is operated during pivoting at the first pivot position shown. Alternatively, the user can move the tool part 4 from... Figure 3a The second pivot position shown is towards Figure 3b The operation of the cutting member 3 is canceled when pivoting to the first pivot position shown. However, a cleaner cutting result can be achieved by operating the cutting member 3 during pivoting, as explained below.
[0081] Figure 3c It shows that according to Figures 1 to 3b The second side of the handheld cutting tool 1 in the embodiment shown is such that the tool portion 4 pivots relative to the main body portion 2 to a third pivot position. Figure 3c As can be seen, when the tool part 4 is in the third pivot position, the object 30 is located below the cutting member 3 when viewed relative to the local gravity vector gv.
[0082] Therefore, users can remove tool section 4 from... Figure 3b The first pivot position shown is towards Figure 3c The third pivot position shown is in which object 30 is positioned below cutting member 3 when viewed relative to the local gravity vector gv. Therefore, in this position, cutting member 3 will abut against the upper side of object 30 and will thus cut the upper side of object 30 during operation. Thus, the user can perform a so-called upper cut, in which the upper side of object 30 is cut. The user can operate cutting member 3 until object 30 (i.e., the branch in the example above) is separated. Since the lower side of object 30 has already been cut, object 30 can be separated cleanly, while reducing the risk of so-called tearing.
[0083] Furthermore, by continuously operating the cutting component 3, it is made to... Figure 3a The second pivot position shown, after Figure 3b The first pivot position shown in the figure pivots to move to Figure 3c In the third pivot position shown, the object 30 is cut in a flat cutting plane, resulting in a cleaner cut. This is because the cutting member 3 will follow the grooves formed by the cutting during the pivoting movement of the tool part 4 between different pivot positions.
[0084] According to the illustrated embodiment, the angle between the first pivot position and the second pivot position is approximately 90 degrees. Furthermore, the angle between the first pivot position and the third pivot position is also approximately 90 degrees. Therefore, according to the illustrated embodiment, the angle between the second pivot position and the third pivot position is approximately 180 degrees. According to the illustrated embodiment, the elastic member 13 is configured to prevent the tool portion 4 from pivoting beyond the second and third pivot positions. In other words, according to the illustrated embodiment, the tool portion 4 can pivot 180 degrees relative to the body portion 2 about the pivot axis Pa. According to other embodiments, the cutting tool 1 may include other types of arrangements for limiting the pivotal movement of the tool portion 4 relative to the body portion 2, such as arrangements arranged inside the housing 4' of the tool portion 4 of the cutting tool 1. Furthermore, the cutting tool 1 may include arrangements configured to limit the pivotal movement of the tool portion 4 relative to the body portion 2 to angles other than 180 degrees, such as angles in the range of 110 to 340 degrees, or angles in the range of 160 to 240 degrees.
[0085] The angle of the tool portion 4 relative to the main body portion 2 mentioned above can be measured as the angle between the reciprocating motion axis Ra of the cutting member 3 and the elongation direction de of the main body portion 2 of the cutting tool 1. Similarly, the angles between the first pivot position, the second pivot position, and / or the third pivot position mentioned above can be measured as the angle between the reciprocating motion axis Ra of the cutting member 3 and the elongation direction de of the main body portion 2 obtained in the corresponding pivot position.
[0086] Even if the main body 2 is in Figures 3a to 3c The cutting tool 1, as shown in the figure, is parallel to the local gravity vector gv. However, the design of the cutting tool 1 according to the illustrated embodiment allows the user to cut objects 30 that are relatively high above the ground without standing below them.
[0087] like Figure 2 As shown, the cutting member 3 includes a first cutting edge 31 arranged on a first side s1 of the cutting member 3 when viewed relative to the reciprocating motion axis Ra, wherein the first cutting edge 31 faces the first abutting surface 10' of the first abutting member 10. Furthermore, according to the illustrated embodiment, the cutting member 3 includes a second cutting edge 32 arranged on a second side s2 of the cutting member 3 when viewed relative to the reciprocating motion axis Ra. The second side s2 of the cutting member 3 is opposite to the first side s1 of the cutting member 3 when viewed relative to the reciprocating motion axis Ra. Furthermore, according to the illustrated embodiment, the cutting tool 1 includes a second abutting member 20 having a second abutting surface 20'. The second abutting surface 20' is configured to abut against an object during cutting using the second cutting edge 32 of the cutting member 3.
[0088] According to the illustrated embodiment, the second abutment 20 has the same design as the first abutment 20 but is a mirror image of it. Therefore, according to the illustrated embodiment, the shape and size of the second abutment 20 are the same as those of the first abutment 10, and the first and second abutments 10 and 20 together form a V-shape. The second abutment 20 can be used with the second cutting blade 32 in the cutting process described above, in which a downward cut is performed followed by an upward cut to provide a clean cut while reducing the risk of tearing.
[0089] Furthermore, the design in which the first and second adjacent members 10 and 20 together form a V-shape in the illustrated embodiment offers other advantages. (Reference) Figure 3c When the upper cut is complete and object 30 separates from the rest of the object, tool part 4 can fall, causing the second abutment 20 to abut against the rest of the object. Therefore, due to the V-shape formed by the first and second abutment members 10 and 20, the rest of the cut object can be secured to tool part 4, preventing it from falling towards the ground upon completion of the cut. This allows for a safer and more controllable cutting process.
[0090] like Figure 2 As shown, the cutting member 3 includes a first end 3' and a second end 3'". The cutting member 3 is attached to the tool portion 4 via the first end 3', and the second end 3' is a free end. Therefore, the power source 5 of the cutting tool 1 is operatively connected to the first end 3' of the cutting member 3 and configured to reciprocate the cutting member 3 by reciprocating the first end 3'. The cutting member 3 of the illustrated embodiment is similar to the blade of a jigsaw. Due to the characteristics of the cutting member 3, it can be provided in a cost-effective manner. Furthermore, a lightweight cutting member 3 can be provided. In addition, compared to other types of cutting units such as chainsaw units, the cutting member 3 does not require a lubrication system for lubricating the cutting member 3, which also saves on the cost of the cutting tool 1 and reduces its weight. Furthermore, compared to other types of cutting units such as chainsaw units, the cutting member 3 can perform clean and smooth cuts while consuming less energy. As a further result, the tool portion 4 of the cutting tool 1 can be made lighter. In addition, a smaller and lighter power source 5 can be used to power the cutting member 3. Therefore, as a further result of these features, a lighter-weight cutting tool 1 is provided. The cutting component 3 mentioned herein may also be referred to as a "saw blade", "jigsaw blade", etc.
[0091] like Figure 2As shown, the cutting member 3 is configured to move along a first direction and a second direction d1, d2 during reciprocating motion. The first direction d1 points towards the tool portion 4 of the cutting tool 1, and the second direction d2 moves away from the tool portion 4 of the cutting tool 1. Clearly, the second direction d2 is opposite to the first direction d1. Figure 2 As can be seen, the cutting member 3 includes a plurality of toothed portions 33, each toothed portion being angled such that the cutting efficiency of the cutting member 3 when moving along the first direction d1 is greater than the cutting efficiency of the cutting member 3 when moving along the second direction d2. This is achieved by making the toothed portions 33 angled in the direction toward the first direction d1.
[0092] The toothed portion 33 mentioned above is the toothed portion of the first cutting edge 31 of the cutting member 3. In other words, according to the illustrated embodiment, the toothed portion 33 is angled in the direction toward the first abutment surface 10' of the first abutment member 10. Due to these features, the force applied to the object 30 when the cutting member 3 moves along the first direction d1 is greater than when it moves along the second direction d2. Therefore, the object 30 being cut is held more firmly against the cutting member 3 and the first abutment member 10. This is because the cutting action of the cutting member pulls the object 30 in the direction against the first abutment member 10. As a further result, the cutting tool 1 can be used in a more ergonomic and safer manner.
[0093] exist Figure 2 The diagram shows a plurality of teeth 33' of the second cutting edge 32. According to the illustrated embodiment, the size of the teeth 33' of the second cutting edge 32 is smaller than the size of the teeth 33 of the first cutting edge 31. However, the teeth 33' can also make the cutting efficiency of the cutting member 3 when moving along the first direction d1 greater than that when moving along the second direction d2. Due to the different sizes, a more versatile cutting tool 1 is provided, allowing the user to select the sides s1, s2 and cutting edges 31, 32 of the cutting member 3 according to the object 30 to be cut. However, according to other embodiments, the first and second cutting edges 31, 32 of the cutting member 3 may include teeth 33, 33' of the same size and shape.
[0094] like Figure 2 As shown, according to the illustrated embodiment, the cutting tool 1 includes a locking component 15. The locking component 15 is switchable between a locked state and an unlocked state. In the locked state, the locking component 15 locks the tool portion 4 so that the tool portion cannot pivot about the pivot axis Pa. In the unlocked state, the locking component 15 allows the tool portion 4 to pivot about the pivot axis Pa. Figure 2In the center, knob 45 can be seen. As further explained herein, knob 45 is operatively connected to locking assembly 15 for switching locking assembly 15 between a locked state and an unlocked state.
[0095] Figure 4 It shows that according to Figures 1 to 3c The third side of the handheld cutting tool 1 in the embodiment shown. Figure 4 In the image, the handheld cutting tool 1 is shown at such an angle that the pivot axis Pa between the tool portion 4 and the main body portion 2 is perpendicular to... Figure 4 The observation direction is such that the cutting plane Pc of the cutting component 3 is parallel to the observation direction. Furthermore, in... Figure 4 In the diagram, tool portion 4 is shown in the first pivot position mentioned above relative to main body portion 2.
[0096] Furthermore, as explained above, and as... Figure 4 As can be seen from the illustration, according to the shown embodiment, the angle a2 between the pivot axis Pa and the cutting plane Pc is 90 degrees. According to other embodiments, the angle a2 between the pivot axis Pa and the cutting plane Pc can be in the range of 60 to 120 degrees, or in the range of 80 to 100 degrees. Therefore, a handheld cutting tool 1 is provided that facilitates cutting and allows the user to perform upper and lower cuts on relatively distant objects in a simple, safe, and convenient manner.
[0097] exist Figure 4The diagram schematically shows a first locking member and second locking members 51 and 52 of the locking assembly 15. One of the first locking member and the second locking member 51 and 52 is connected to the tool part 4, and the other of the first locking member and the second locking member 51 and 52 is connected to the body part 2. Furthermore, a knob 45 is operably connected to at least one of the first locking member and the second locking member 51 and 52, such that rotating the knob 45 in a first rotational direction increases the distance between the first locking member and the second locking member 51 and 52, and rotating the knob 45 in a second rotational direction decreases the distance between the first locking member and the second locking member 51 and 52. Thus, the user can switch the locking assembly 15 to the unlocked state by rotating the knob 45 in the first rotational direction, and can switch the locking assembly 15 to the locked state by rotating the knob 45 in the second rotational direction. Therefore, a more versatile cutting tool 1 is provided that allows the user to lock the tool portion 4 to prevent it from pivoting relative to the body portion 2 while performing certain cutting tasks, and allows the user to unlock the tool portion 4 to allow it to pivot relative to the body portion 2 while performing other cutting tasks. As understood above, the locking component 15 according to the illustrated embodiment is a mechanical locking component, and the locking component 15 is movable between a locked state and an unlocked state. According to other embodiments, the locking component 15 may have different designs and may include actuators of other types besides the knob 45 for switching the locking component 15 between the locked and unlocked states.
[0098] Figure 5 An enlarged view schematically showing the tool portion 4 of a handheld cutting tool 1 according to some other embodiments is shown. Furthermore, in Figure 5 In the image, a cross-section of the main body 2 of the handheld cutting tool 1 can be seen. Figure 5 In the diagram, the cutting tool 1 is shown from the first side, and the tool portion 4 is shown in the first pivot position mentioned above relative to the main body portion 2 of the cutting tool 1. According to... Figure 5 The handheld cutting tool 1 of the embodiment shown includes, according to reference... Figures 1 to 4 The handheld cutting tool 1 described in the embodiments has the same features, functions and advantages as the handheld cutting tool 1 described below, and some differences will be described below.
[0099] according to Figure 5In the embodiments shown, the shape and size of the second abutment 20 differ from the shape and size of the first abutment 10 of the cutting tool 1. More specifically, according to these embodiments, the size of the second abutment 20 is much smaller than the size of the first abutment 10. Furthermore, the second abutment 20 includes a second abutment surface 20' having a surface normal N2 that is substantially parallel to the reciprocating motion axis Ra of the cutting member 3. According to other embodiments, the second abutment 20 may be arranged such that the angle between the surface normal N2 of the second abutment surface 20' and the reciprocating motion axis Ra of the cutting member 3 is less than 20 degrees or less than 10 degrees.
[0100] Because the shape and size of the second adjacent member 20 differ from those of the first adjacent member 10, a more versatile handheld cutting tool 1 is provided. This handheld cutting tool allows the user to utilize the first cutting edge 31 of the cutting member 3 when performing certain cutting tasks, and allows the user to utilize the second cutting edge 32 of the cutting member when performing other cutting tasks. As an example, when referring to the above... Figures 1 to 3c When performing downward and upward cuts as described, the user can utilize the first cutting edge 31 of the cutting tool 1. As another example, the user can utilize the second cutting edge 32 when they want to reach certain objects or cut objects with a certain diameter.
[0101] The term “roughly parallel to” as used in this article can cover angles between the objects mentioned that are less than 10 degrees or less than 7 degrees.
[0102] It should be understood that the foregoing is a description of various exemplary embodiments, and the present invention is defined only by the appended independent claims. Those skilled in the art will understand that modifications can be made to the exemplary embodiments without departing from the scope of the invention as defined by the appended independent claims, and different features of the exemplary embodiments can be combined to form embodiments other than those described herein.
[0103] As used herein, the terms “comprising” or “including” are open-ended and include one or more of the stated features, elements, steps, components, or functions, but do not exclude the presence or addition of one or more other features, elements, steps, components, functions, or groups thereof.
Claims
1. A hand-held cutting tool (1) comprising: - a cutting member (3) configured to perform a reciprocating motion along a reciprocating axis (Ra), - a power source (5) configured to provide power to the cutting member (3), - a main body portion (2) comprising a handle (6, 6’), and - a tool portion (4) comprising the cutting member (3) and a first abutment (10) having a first abutment surface (10’) configured to abut against an object (30) during cutting of the object (30) with the cutting member (3), wherein the tool portion (4) is pivotally attached to the main body portion (2) about a pivot axis (Pa); and wherein the cutting tool (1) further comprises a resilient member (13) configured to bias the tool portion (4) relative to the main body portion (2) towards a predetermined pivot position.
2. The cutting tool (1) according to claim 1, wherein The first abutment surface (10’) has a surface normal (N1) pointing towards the cutting member (3).
3. The cutting tool (1) according to claim 1 or 2, wherein An angle (al) between the reciprocating axis (Ra) and the first abutment surface (10’) is in the range of 30 to 85 degrees.
4. The cutting tool (1) according to claim 1 or 2, wherein The cutting member (3) is configured to cut an object (30) in a cutting plane (Pc), and wherein an angle (a2) between the pivot axis (Pa) and the cutting plane (Pc) is in the range of 60 to 120 degrees.
5. The cutting tool (1) according to claim 1 or 2, wherein A minimum distance (do) between the reciprocating axis (Ra) and the pivot axis (Pa) is less than 10 cm.
6. The cutting tool (1) according to claim 1 or 2, wherein A length (LI) of the main body portion (2) is at least two times or at least four times a length (L2) of the tool portion (4), wherein the length of the main body portion is measured from a first end (1’) of the cutting tool (1) to the pivot axis (Pa) and the length of the tool portion is measured from a second end (1”) of the cutting tool (1) to the pivot axis (Pa).
7. The cutting tool (1) according to claim 1 or 2, wherein The main body portion (2) comprises a stem (12) elongated along an elongation direction (de).
8. The cutting tool (1) according to claim 7, wherein The main body portion (2) comprises a handle portion (8) having the handle (6), wherein the handle portion (8) is arranged at a first end (12’) of the stem (12), and wherein the tool portion (4) is pivotally attached to the main body portion (2) at a second end (12”) of the stem (12).
9. The cutting tool (1) according to claim 1 or 2, wherein The main body portion (2) is elongated along an elongation direction (de), and wherein the tool portion (4) is pivotable relative to the main body portion (2) into a first pivot position in which the reciprocating axis (Ra) of the cutting member (3) is substantially parallel to the elongation direction (de) of the main body portion (2).
10. The cutting tool (1) according to claim 9, wherein The predetermined pivot position coincides with the first pivot position.
11. The cutting tool (1) according to claim 1 or 2, wherein The power source (5) is arranged in the tool portion (4) of the cutting tool (1).
12. The cutting tool (1) according to claim 1 or 2, wherein The power source (5) is an electric motor.
13. The cutting tool (1) according to claim 1 or 2, wherein The cutting member (3) comprises a first cutting edge (31) arranged at a first side (s1) of the cutting member (3) relative to the reciprocating axis (Ra), and wherein the cutting member (3) comprises a second cutting edge (32) arranged at a second side (s2) of the cutting member (3), the second side (s2) being opposite the first side (s1) of the cutting member (3).
14. The cutting tool (1) according to claim 13, wherein The cutting tool (1) comprises a second abutment (20) having a second abutment surface (20') configured to abut against an object during cutting of the object with the second cutting edge (32) of the cutting member (3).
15. The cutting tool (1) according to claim 14, wherein The first abutment (10) and the second abutment (20) together form a V-shape.
16. The cutting tool (1) according to claim 1 or 2, wherein The cutting member (3) is configured to move in a first direction (d1) and a second direction (d2) when performing the reciprocating movement, the first direction (d1) pointing towards the tool portion (4) and the second direction (d2) pointing away from the tool portion (4), and wherein the cutting member (3) comprises a plurality of teeth (33), each of the teeth being angled such that a cutting efficiency of the cutting member (3) when moving in the first direction (d1) is greater than a cutting efficiency of the cutting member (3) when moving in the second direction (d2).
17. The cutting tool (1) according to claim 3, wherein An angle (a1) between the reciprocating axis (Ra) and the first abutment surface (10') is in the range of 45 degrees to 80 degrees.
18. The cutting tool (1) according to claim 4, wherein An angle (a2) between the pivot axis (Pa) and the cutting plane (Pc) is in the range of 80 degrees to 100 degrees.
19. The cutting tool (1) according to claim 5, wherein A minimum distance (d0) between the reciprocating axis (Ra) and the pivot axis (Pa) is less than 5 cm.
Citation Information
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