Power-assisted municipal garden shears

Abstract

The utility model belongs to the technical field of cutting tool of horticulture, especially relates to the trimming scissors of flower or fruit tree, concretely relates to a power -assisted municipal gardens scissors. The utility model includes at least two knife components, two knife components are connected in the same connecting shaft simultaneously, and the knife component includes the handle and the bit, still includes at least two power -assisted ropes, rope collecting spare and rocker spare, wherein one end of two power -assisted ropes is connected on two handles respectively, and the end of two power -assisted ropes not connected handle is connected on the same rope collecting spare, and rocker spare is connected on the axle of rope collecting spare and has the force arm of the radius length of rope collecting spare beyond. The utility model sets up rocker spare, and makes its force arm greater than the radius of rope collecting spare, and constitutes a labor -saving lever, and the user can use smaller hand power, and generates greater torque through rocker to tighten power -assisted rope, to cut the thicker branch easily, and still does not affect power -assisted effect after the deformation of handle long -time use.

Description

Technical Field

[0001] This utility model belongs to the technical field of horticultural cutting tools, and particularly relates to pruning shears for flowers or fruit trees, specifically a assisted municipal garden shear. Background Technology

[0002] Patent document 1 discloses a garden shears for municipal landscaping. For branches that require greater force to cut, a rotatable support threaded block aligns the transmission screw with the auxiliary connecting sleeve groove, and the hand crank is rotated to realize the threaded transmission between the transmission screw and the auxiliary connecting sleeve groove, thereby achieving auxiliary cutting. This improves the pruning efficiency of municipal landscaping and reduces the labor of operators.

[0003] However, in actual use, the auxiliary connecting sleeve and the transmission screw often cannot be aligned smoothly, usually due to deformation caused by the long-term use of the first and second tool holders.

[0004] In addition, if the transmission lead screw is screwed too deeply into the support threaded block, it is necessary to first unscrew the support threaded block before threading it into the auxiliary connection slot when you want to thread it into the auxiliary connection slot, which is time-consuming and laborious. Utility Model Content

[0005] The purpose of this utility model is to provide a power-assisted municipal garden shears that not only maintains its assistive effect even after the handle deforms after prolonged use, but also eliminates the need for cumbersome adjustment steps similar to threaded connections each time it is used.

[0006] The technical solution adopted by this utility model to solve the above problems is: a power-assisted municipal garden shears, including at least two blade handles, which are rotatably connected to the same shaft. Each blade handle includes a blade head and a handle. It also includes at least two power ropes, a rope winding component, and a rocker arm. One end of each of the two power ropes is connected to one of the two handles, and the ends of the two power ropes not connected to the handles are connected to the same rope winding component. The rocker arm is connected to the shaft of the rope winding component and has a lever arm that exceeds the radius of the rope winding component.

[0007] A further preferred technical solution is that: the rope winding component includes a winding groove, a rope hole, and a winding shaft; the rocker component includes a rocker and a rocker shaft; wherein, the end of the assist rope not connected to the handle passes through the rope hole and is connected to the winding shaft, and the rocker shaft is coaxially connected to the winding shaft.

[0008] A further preferred technical solution is that the rocker arm includes an outer rod, an inner rod, and a connecting rod. The outer rod has an outer rod groove, and the inner rod has an inner rod groove. The opening of the inner rod groove is opposite to the opening of the outer rod groove, and the inner end of the connecting rod is set on the inner wall of the outer rod groove and inserted into the inner rod groove.

[0009] A further preferred technical solution is that: the inner rod is also provided with an outer blocking block, and the plug-in rod is also provided with an inner blocking block; wherein, the outer blocking block is set at the groove opening of the inner rod slide, the inner blocking block is coaxially set on the plug-in rod, and the minimum diameter of the notch formed by the outer blocking block is smaller than the maximum diameter of the inner blocking block.

[0010] A further preferred technical solution is that: the storage tank is also provided with a movable locking component and a fixed locking component; wherein, the movable locking component is provided on the outer bottom surface of the storage tank, and the fixed locking component is used to detachably connect the movable locking component.

[0011] A further preferred technical solution is that the movable locking component is an internally threaded groove, and the fixed locking component is a fixing bolt, wherein the rotation direction of the rocker arm storing the assist rope is consistent with the direction in which the fixing bolt tightens the internally threaded groove.

[0012] A further preferred technical solution is that: the movable locking component is at least two fixing slots set on the bottom surface of the outer side of the storage tank, and the fixed locking component is at least two fixing bolts, wherein the number and setting position of the fixing slots and the fixing bolts are the same.

[0013] A further preferred technical solution is that the storage tank is also provided with a gripping component, wherein the gripping component is disposed on the outer bottom surface of the storage tank.

[0014] A further preferred technical solution is that the gripping component has recessed finger grooves in the gripping area.

[0015] A further preferred technical solution is that the gripping component has a friction layer in the gripping area.

[0016] In summary, this utility model has the following advantages: 1. This utility model creates a lever by setting up a rocker arm with a lever arm greater than the radius of the rope winding component, thus forming a force-saving lever. Users can use relatively small hand force to generate a large torque through the rocker arm to tighten the assist rope, thereby easily cutting thicker branches.

[0017] 2. The rocker arm of this utility model adopts a telescopic design. When shortened, the overall structure is compact, making it easy to carry and store. When extended, the lever arm is further increased, which can provide greater torque, making shearing less strenuous and adapting to different shearing force requirements.

[0018] 3. This utility model, through the cooperative design of the outer and inner blocking blocks, limits the maximum extension length of the inner rod, effectively preventing the inner rod from completely dislodging from the outer rod during operation, thus increasing safety in use.

[0019] 4. By incorporating movable and fixed locking components, this utility model allows the entire rope-reeling device to be secured to external supports such as workbenches or railings. This enables the user to use both hands to crank the lever, applying greater force for cutting very thick branches, thus overcoming the strength limitations of single-handed operation.

[0020] 5. This utility model features a grip on the storage slot, which typically incorporates recessed finger grooves and a friction layer for improved ergonomics. When the cord retractor needs to be held by hand, the grip provides a comfortable, non-slip, and stable grip point, allowing the user to hold it firmly with one hand while effectively cranking the lever with the other. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings: Figure 1 A structural diagram of a power-assisted municipal landscaping shear.

[0022] Figure 2 for Figure 1 A diagram illustrating how the garden shears close when the middle-mounted assist rope is retracted.

[0023] Figure 3 This is a schematic diagram of the rope winding component in Example 1.

[0024] Figure 4 This is a schematic diagram of the rope winding component and the rocker arm component in Example 1.

[0025] Figure 5 This is a schematic diagram of the outer rod and inner rod in Example 2.

[0026] Figure 6 for Figure 5 A schematic diagram of the inner rod extending outward.

[0027] Figure 7 This is a schematic diagram of the movable and fixed locking components in Example 3.

[0028] Figure 8 This is a schematic diagram of another form of the movable and fixed locking component in Example 3.

[0029] Figure 9 This is a schematic diagram of the gripping component in Example 4.

[0030] In the attached diagram, the components represented by each number are as follows: 1. Handle, 1.1. Blade, 1.2. Shaft, 2. Assist rope, 3. Rope winding, 4. Retractor, 4.1. Locking element, 4.1.1. Rope hole, 4.2. Winding shaft, 4.3. Rocker, 5.1. Rocker, 5.1.1. Outer rod, 5.1.1.1. Inner rod, 5.1.2. Inner rod groove, 5.1.2.1. Outer blocking block, 5.1.2.2. Connecting rod, 5.1.3. Inner blocking block, 5.1.3.1. Rocker shaft, 5.2. Fixed locking element, 6. Detailed Implementation

[0031] To address the problems mentioned in the background art, this disclosure provides a power-assisted municipal garden shears. Because it uses a relatively soft power-assist rope to transmit force, it is highly adaptable to slight deformations of the two handles caused by prolonged use. Even if the handles are slightly misaligned or bent, the rope can still effectively transmit tension, unlike in Patent Document 1 where the "drive screw and auxiliary connecting groove" are misaligned and therefore unusable. This solves the problem of inability to achieve proper alignment.

[0032] In addition, the use of a power cord greatly simplifies the power-assistance operation process. When assistance is needed, the user only needs to tighten the cord to generate assistance, which completely eliminates the cumbersome alignment and adjustment steps of "first unscrewing the support threaded block outward, and then threading it into the auxiliary connection slot" in Patent Document 1, thus solving the problem of cumbersome, time-consuming and labor-intensive adjustment steps. The present invention will be specifically illustrated below with reference to embodiments: This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law. Example 1:

[0033] refer to Figure 1-2 A power-assisted municipal garden shears includes at least two handle components 1, which are rotatably connected to the same shaft 2. Each handle component 1 includes a blade head 1.1 and a handle 1.2. The shears also include at least two power cords 3, a cord winding component 4, and a rocker arm 5. One end of each power cord 3 is connected to one of the two handles 1.2, and the other end of each power cord 3 is connected to the same cord winding component 4. The rocker arm 5 is connected to the shaft of the cord winding component 4 and has a lever arm that extends beyond the radius of the cord winding component 4.

[0034] Among them, the handle 1 is the main frame of the garden shears. One end of it is equipped with a blade 1.1 for cutting, and the other end is a handle 1.2 for people to hold. The two handles are connected by a connecting shaft 2 to form a lever system. When people hold the two handles tightly in the middle, the blade at the front end will close to complete the cutting action through the lever principle.

[0035] The assist rope 3 is the core component for transmitting assistance. One end of each of the two assist ropes is fixed to one of the two handles. When assistance is needed, tightening these two ropes generates a force that pulls the two handles closer together, thus assisting the cutter head in closing for shearing. The rope winding device 4 is a device for winding and storing the assist ropes. Its specific form can be similar to a winch or coil winch structure. It gathers the other ends of the two assist ropes 3, which are respectively connected to the handles on both sides, into one body. By rotating the rope winding device 4, the two assist ropes 3 can be tightened simultaneously, thereby pulling the two handles 1.2. The rocker arm 5 is a force-saving lever. It is fixedly connected to the shaft of the rope winding device 4, serving as the operating handle for driving the rotation of the rope winding device. Because its lever arm is larger than the radius of the rope winding device, the operator can generate a large torque with relatively small hand force, thus easily tightening the assist ropes.

[0036] Specifically, regarding "the rocker arm 5 is coaxially connected to the rope take-up member 4 and has a lever arm that exceeds the radius of the rope take-up member 4", the "radius of the rope take-up member 4" generally refers to the straight-line distance from the axis to the position where the rope is wound. For example, when the rope take-up member 4 has a cylindrical shape, the "radius of the rope take-up member 4" is the radius of the cylinder. This distance determines the circumference of the assist rope 3 and also determines the length of the resistance arm. The tension generated by the assist rope 3 is the resistance, and this resistance acts on the radius of the rope take-up member. The lever arm is generally the length of the rocker arm 5 itself, or slightly less than the length of the rocker arm 5 itself, that is, the distance from the axis to the end of the handheld rocker arm 5.

[0037] refer to Figures 3-4 Furthermore, the rope winding component 4 includes a storage groove 4.1, a rope hole 4.2, and a winding shaft 4.3, and the rocker component 5 includes a rocker arm 5.1 and a rocker arm shaft 5.2; wherein, the end of the assist rope 3 that is not connected to the handle 1.2 passes through the rope hole 4.2 and is connected to the winding shaft 4.3, and the rocker arm shaft 5.2 is coaxially connected to the winding shaft 4.3.

[0038] The storage groove 4.1 is a hollow cylinder with side walls. These side walls ensure that the assist rope 3 does not slip off, become tangled, or get stuck on the winding spool 4.3 during winding. This allows the assist rope 3 to be neatly wound layer by layer onto the winding spool 4.3, ensuring a smooth and reliable winding process. The rope hole 4.2 is a smooth circular hole on the side wall of the storage groove 4.1, used for guiding and positioning. It provides a fixed path for the assist rope 3, accurately guiding it from the handle 1.2 direction to the winding spool 4.3. The spool 4.3 is the core component of the winding assembly 4. It is typically located at the center of the winding tray 4.1 and is usually a solid cylinder. It is either fixedly connected to the winding tray 4.1 or manufactured as a single unit. It is used to wind the assist rope 3 and bear the tension. It is the component that directly winds up the assist rope 3. The torque applied by the operator through the rocker arm 5.1 ultimately acts on the spool 4.3, causing it to rotate and thus winding the assist rope 3 around itself, generating a linear tension that is neither parallel to nor relatively perpendicular to the extension direction of the handle 1.2. The rocker arm 5.1 is a rod of a certain length, fixedly mounted on the rocker arm shaft 5.2. Serving as a lever, the operator manually rotates the rocker arm 5.1. Because the length of the rocker arm 5.1 is greater than the radius of the spool, according to the lever principle, a large torque can be generated with relatively small hand force, thus easily tightening the assist rope. The rocker arm shaft 5.2 is a short shaft that is coaxially and fixedly connected to the winding shaft 4.3. It can be an outward extension of the winding shaft 4.3 or a separate part rigidly connected to the winding shaft 4.3. It forms the mounting base for the rocker arm 5.1, connecting the rocker arm 5.1 to the winding shaft 4.3 of the winding component 4, ensuring that when the rocker arm 5.1 rotates, it can transmit torque to the winding shaft 4.3, causing it to rotate synchronously. Example 2:

[0039] Based on the technical solution of Embodiment 1, further, refer to Figures 5-6 The rocker arm 5.1 includes an outer rod 5.1.1, an inner rod 5.1.2, and a connecting rod 5.1.3. The outer rod 5.1.1 has an outer rod groove 5.1.1.1, and the inner rod 5.1.2 has an inner rod groove 5.1.2.1. The opening of the inner rod groove 5.1.2.1 is opposite to the opening of the outer rod groove 5.1.1.1. The inner end of the connecting rod 5.1.3 is set on the inner wall of the outer rod groove 5.1.1.1 and inserted into the inner rod groove 5.1.2.1.

[0040] The outer rod 5.1.1 is the outer sleeve of the rocker arm 5.1, serving as the fixed part of the rocker arm 5.1. One end of it is fixedly connected to the rocker arm shaft 5.2. Its tube wall has an outer rod groove 5.1.1.1, a straight slot of a certain length, which restricts the movement trajectory of the inner rod 5.1.2. The inner end of the connecting rod 5.1.3 is fixed to the inner wall of the outer rod groove 5.1.1.1. The length and direction of the connecting rod 5.1.3 determine the sliding range of the inner rod 5.1.2. The inner rod groove 5.1.2.1 is parallel to the outer rod groove 5.1.1.1, allowing the inner rod 5.1.2 to always be parallel to the outer rod 5.1.1 during sliding, thus adjusting its length and further increasing the torque. Further, see attached document. Figure 6 The inner rod 5.1.2 is also provided with an outer blocking block 5.1.2.2, and the plug rod 5.1.3 is also provided with an inner blocking block 5.1.3.1; wherein, the outer blocking block 5.1.2.2 is provided at the groove opening of the inner rod slide groove 5.1.2.1, and the inner blocking block 5.1.3.1 is coaxially provided on the plug rod 5.1.3, and the minimum diameter of the notch formed by the outer blocking block 5.1.2.2 is smaller than the maximum diameter of the inner blocking block 5.1.3.1.

[0041] The "minimum diameter of the notch" refers to the minimum inner diameter of the opening formed by the outer blocking block 5.1.2.2, and the "maximum diameter of the inner blocking block 5.1.3.1" refers to the maximum outer diameter of the outer surface of the inner blocking block 5.1.3.1. The minimum diameter of the notch formed by the outer blocking block is smaller than the maximum diameter of the inner blocking block. Specifically, the size of the inner blocking block is larger than the size of the notch. Therefore, the inner blocking block cannot pass through the notch formed by the outer blocking block. That is, when the user adjusts the length of the joystick 5.1, the inner rod 5.1.2 can slide inside the outer rod 5.1.1, but the inner blocking block will be blocked by the outer blocking block, thus preventing the inner rod 5.1.2 from completely detaching from the outer rod 5.1.1. Example 3:

[0042] Based on the technical solutions of Embodiment 1 or Embodiment 2, the user needs to hold the storage tank 4.1 firmly with one hand to prevent it from rotating when winding the rope, while using the other hand to turn the rocker arm 5.1. In this case, the force of turning the rocker arm with one hand is limited, and the operation is inconvenient. Furthermore, the storage tank 4.1 is also provided with a movable locking member 4.1.1 and a fixed locking member 6; wherein, the movable locking member 4.1.1 is provided on the outer bottom surface of the storage tank 4.1, and the fixed locking member 6 is used for detachably connecting the movable locking member 4.1.1.

[0043] Once the movable locking element 4.1.1 is installed on the fixed locking element 6, the user can operate the joystick 5.1 with both hands to obtain greater force, instead of having to operate the joystick 5.1 with one hand and hold the storage slot 4.1 with the other. The fixed locking element 6 can usually be fixed to external supports such as workbenches and railings.

[0044] refer to Figure 7 Furthermore, the movable locking part 4.1.1 is an internal threaded groove, and the fixed locking part 6 is a fixing bolt, wherein the rotation direction of the rocker arm 5.1 that houses the assist rope 3 is consistent with the direction in which the fixing bolt tightens the internal threaded groove.

[0045] The direction in which the user rotates the rocker arm to tighten the assist rope is precisely the direction in which the fixing bolt is tightened in the movable locking part. This ensures that during the assist shearing process, the connection between the rope winding device and the fixing point will become tighter and tighter, rather than looser.

[0046] refer to Figure 8 Furthermore, the movable locking element 4.1.1 consists of at least two fixing slots set on the outer bottom surface of the storage slot 4.1, and the fixed locking element 6 consists of at least two fixing bolts, wherein the number and setting position of the fixing slots and the fixing bolts are the same.

[0047] The requirement that "the number and location of the fixing slots and fixing bolts are the same" ensures that each fixing bolt has a corresponding fixing slot to accommodate it, achieving "full engagement" and avoiding installation failure due to mismatch in quantity. The requirement of "at least two" ensures a proper locking effect, preventing engagement failure caused by only one fixing slot and fixing bolt. Example 4:

[0048] Based on the technical solution of Embodiment 1 or Embodiment 2, the user needs to hold the storage tank 4.1 tightly with one hand to prevent it from rotating when retracting the rope, and turn the rocker arm 5.1 with the other hand. In this case, the way of applying force by holding the storage tank 4.1 is inconvenient, and the user often cannot apply force fully.

[0049] refer to Figure 9 Furthermore, the storage tank 4.1 is also provided with a gripping member 4.1.2, which is located on the outer bottom surface of the storage tank 4.1.

[0050] The grip 4.1.2 provides an ergonomic, non-slip, and easy-to-grip part for the user's hand holding the storage slot 4.1, thus solving the inconvenience, effort, and instability of directly holding the relatively smooth cylindrical storage slot 4.1 with bare hands. The grip 4.1.2 is typically a handle-like protrusion, a raised part similar to a tool handle, which allows the entire palm to wrap around and hold it. Furthermore, the grip 4.1.2 features recessed finger grooves in the grip area, allowing the user's fingers to naturally engage and preventing slippage.

[0051] Furthermore, the gripping component 4.1.2 has a friction layer in the gripping area. The friction layer can be a coating or covering of rubber or soft plastic, or it can be an uneven texture such as particles or stripes on the surface of the gripping component 4.1.2 to increase friction.

[0052] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Furthermore, the terms "vertical," "horizontal," "front," and "rear," etc., mentioned in the embodiments of this utility model indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. It should be further noted that, unless otherwise explicitly specified and limited, terms such as "install," "connect," "join," and "fix" in the description should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. A power-assisted municipal garden shears, comprising at least two handle components (1), the two handle components (1) being rotatably connected to the same connecting shaft (2), each handle component (1) comprising a blade head (1.1) and a handle (1.2); characterized in that, It also includes at least two assist ropes (3), a rope take-up member (4), and a rocker arm (5); wherein one end of each of the two assist ropes (3) is connected to one of the two handles (1.2), and the other end of each of the two assist ropes (3) not connected to the handles (1.2) is connected to the same rope take-up member (4), and the rocker arm (5) is connected to the shaft of the rope take-up member (4) and has a lever arm that exceeds the radius of the rope take-up member (4).

2. The assisted municipal and garden shears according to claim 1, characterized in that, The rope winding component (4) includes a storage groove (4.1), a rope hole (4.2), and a winding shaft (4.3). The rocker component (5) includes a rocker arm (5.1) and a rocker shaft (5.2). The end of the assist rope (3) not connected to the handle (1.2) passes through the rope hole (4.2) and is connected to the winding shaft (4.3). The rocker shaft (5.2) is coaxially connected to the winding shaft (4.3).

3. The assisted municipal and garden shears according to claim 2, characterized in that, The rocker arm (5.1) includes an outer rod (5.1.1), an inner rod (5.1.2), and a connecting rod (5.1.3). The outer rod (5.1.1) is provided with an outer rod groove. 5.1.1.1), the inner rod (5.1.2) has an inner rod groove (5.1.2.1); wherein, the opening of the inner rod groove (5.1.2.1) is arranged opposite to the opening of the outer rod groove (5.1.1.1), and the inner end of the plug rod (5.1.3) is arranged on the inner wall of the outer rod groove (5.1.1.1) and inserted into the inner rod groove (5.1.2.1).

4. The assisted municipal and garden shears according to claim 3, characterized in that, The inner rod (5.1.2) is also provided with an outer blocking block (5.1.2.2), and the plug-in rod (5.1.3) is also provided with an inner blocking block ( 5.1.3.1); where, The outer blocking block (5.1.2.2) is provided in the inner rod slide groove ( At the slot of 5.1.2.1), the inner blocking block (5.1.3.1) is coaxially disposed on the plug rod (5.1.3), and the minimum diameter of the notch formed by the outer blocking block (5.1.2.2) is smaller than that of the inner blocking block (5.1.2.1). 5.1.3.1) Maximum diameter.

5. The assisted municipal garden shears according to any one of claims 2-4, characterized in that the storage groove (4.1) is further provided with a movable locking member (4.1.1) and a fixed locking member (6); wherein the movable locking member (4.1.1) is disposed on the outer bottom surface of the storage groove (4.1), and the fixed locking member (6) is used to detachably connect the movable locking member (4.1.1).

6. The assisted municipal and garden shears according to claim 5, characterized in that, The movable locking component (4.1.1) is an internal threaded groove, and the fixed locking component (6) is a fixing bolt, wherein the rotation direction of the rocker arm (5.1) for receiving the assist rope (3) is consistent with the direction in which the fixing bolt tightens the internal threaded groove.

7. The assisted municipal and garden shears according to claim 5, characterized in that, The movable locking element (4.1.1) is at least two fixing slots provided on the bottom surface of the outer side of the storage slot (4.1), and the fixing locking element (6) is at least two fixing bolts, wherein the number and setting position of the fixing slots are the same as those of the fixing bolts.

8. The assisted municipal garden shears according to any one of claims 2-4, characterized in that, The storage tank (4.1) is also provided with a grip (4.1.2), wherein the grip (4.1.2) is disposed on the outer bottom surface of the storage tank (4.1).

9. The assisted municipal and garden shears according to claim 8, characterized in that, The grip (4.1.2) has recessed finger grooves in the grip area.

10. The assisted municipal and garden shears according to claim 8, characterized in that, The gripping member (4.1.2) has a friction layer in the gripping area.

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