Connecting structure for high branch scissors and high branch scissors

Abstract

The utility model relates to the technical field of garden pruning tools, in particular to a pair of high branch scissors and a connecting structure for the same. The connecting structure comprises a fixed part and a transmission part; the first end of the fixing piece is connected with the fixed blade, and the second end of the fixing piece is connected with the lengthening pipe. The transmission part is rotationally connected with the fixing part, the first end of the transmission part is connected with the movable blade in a clamped mode, the second end of the transmission part is connected with the pull wire, and rotation of the movable blade can drive the transmission part to rotate so as to pull the pull wire. According to the utility model, the problems that the refitting process is tedious, the detached blade is easy to lose, the number of refitted parts is large and the like are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of garden pruning tools, in particular to a connection structure for high branch shears and the high branch shears. Background Art

[0002] Pruning and fruit picking of fruit trees are important and indispensable parts of fruit tree growth and management. Electric pruning shears are generally used for pruning or picking. Different pruning tools are needed for pruning tasks at different heights. For example, short-handled pruning shears are used for low branches, while long high-branch shears are used for high branches. High-branch shears are usually modified from short-handled pruning shears.

[0003] The prior art discloses a connection mechanism and an electric pruning shears having the connection mechanism, wherein the first connection end is driven to rotate by a second transmission member, so that the second connection end of the first transmission member will push the transmission line forward and drive the movable blade to rotate relative to the fixed blade, thereby being able to prune branches at high places. In this scheme, when converting the short-handled pruning shears into high branch shears, it is necessary to remove the original fixed blade and movable blade of the short-handled pruning shears, and then add two transmission members. Therefore, when converting the structure, the short-handled pruning shears need to be disassembled, and then the fixed blade and movable blade need to be removed, and the conversion process is cumbersome; and it is easy to cause the loss of the disassembled fixed blade and movable blade, or the fixed blade and movable blade need to be specially placed; in addition, two transmission members are required, and there are many conversion accessories, which increases the number of parts. Utility Model Content

[0004] In view of the deficiencies in the prior art, an embodiment of the utility model aims to provide a connection structure for high-branch shears to solve the problems of complicated modification process, easy loss of removed blades and large number of modified parts.

[0005] In order to achieve the above purpose, the embodiment of the utility model provides the following technical solutions:

[0006] A connection structure for high-branch shears, used for connecting the pruning shears and an extension section, the pruning shears comprising a fixed blade and a movable blade, the extension section comprising an extension tube and a pull wire, the connection structure comprising a fixing member and a transmission member; the first end of the fixing member is connected to the fixed blade, and the second end of the fixing member is connected to the extension tube; the transmission member is rotatably connected to the fixing member, the first end of the transmission member is clamped with the movable blade, and the second end of the transmission member is connected to the pull wire, and the rotation of the movable blade can drive the transmission member to rotate and thereby pull the pull wire.

[0007] Optionally, the movable blade includes a blade portion and a first transmission portion, the first transmission portion is located on the back of the blade portion, and a first transmission tooth is arranged on the outer edge of the first transmission portion; the transmission member includes a pull rod portion and a second transmission portion, the pull rod portion is rotatably connected to the pull wire, and a second transmission tooth is arranged on the outer edge of the second transmission portion, and the second transmission tooth is meshed with the first transmission tooth.

[0008] Optionally, a cushion block is provided between the transmission member and the fixed member, and the cushion block is used to make the transmission member and the movable blade be located on the same plane.

[0009] Optionally, the first end of the fixing member is detachably connected to the fixed blade; the second end of the fixing member is detachably connected to the extension tube, or the second end of the fixing member is integrally formed with the extension tube.

[0010] Optionally, the fixing member is a plate member, and a stop is provided on the side of the fixing member facing the pruning shears, and the shape of the stop matches the shape of the outer shell of the pruning shears.

[0011] Optionally, the movable blade includes a cutting edge and a first transmission portion, the first transmission portion is located on the back of the cutting edge, and a convex plate is provided on the outer edge of the first transmission portion; the transmission member includes a pull rod portion and a second transmission portion, the pull rod portion is rotatably connected to the pull wire, the outer edge of the second transmission portion is provided with a groove, and the convex plate is inserted into the groove.

[0012] Optionally, the movable blade includes a cutting edge and a first transmission portion, the first transmission portion is located on the back of the cutting edge, and a groove is provided on the outer edge of the first transmission portion; the transmission member includes a pull rod portion and a second transmission portion, the pull rod portion is rotatably connected to the pull wire, and a convex plate is provided on the outer edge of the second transmission portion, and the convex plate is inserted into the groove.

[0013] Optionally, the outer edge of the convex plate is arc-shaped, and the inner contour of the groove is an arc-shaped that matches the convex plate.

[0014] Optionally, the movable blade includes a blade portion and a first transmission portion, the first transmission portion is located at the back of the blade portion, and a pin is provided on the first transmission portion; the transmission member includes a pull rod portion and a second transmission portion, the pull rod portion is rotatably connected to the pull wire, and a long slot is provided on the second transmission portion, the pin is inserted into the long slot and can slide in the long slot;

[0015] Alternatively, the movable blade includes a blade portion and a first transmission portion, the first transmission portion is located on the back of the blade portion, and a long groove is provided on the first transmission portion; the transmission member includes a pull rod portion and a second transmission portion, the pull rod portion is rotatably connected to the pull wire, and a pin shaft is provided on the second transmission portion, the pin shaft is inserted into the long groove and can slide in the long groove.

[0016] An embodiment of the utility model further provides a high-branch shear, comprising a pruning shear, an extension section, and the connecting structure for the high-branch shear as described above.

[0017] One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:

[0018] 1. The connection structure of the utility model utilizes the original fixed blade and movable blade of the pruning shears and the newly added transmission parts to realize the modification from the short-handled pruning shears to the high-branch pruning shears. Compared with the existing connection structure, whether it is to modify the short-handled pruning shears into the high-branch pruning shears, or to restore the high-branch pruning shears to the short-handled pruning shears, there is no need to disassemble the fixed blade and the movable blade, which simplifies the modification process and the restoration process and improves the working efficiency.

[0019] 2. The connection structure of the utility model avoids the problem of easy loss of the fixed blade and the movable blade, and there is no need to set up a special position for placing the fixed blade and the movable blade.

[0020] 3. The connection structure of the utility model only requires one transmission part, which reduces the number of modified accessories and facilitates tool management.

[0021] Additional advantages of the present invention will be given in the following description, and some will become apparent from the following description or will be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0023] Figure 1 This is a schematic diagram of the installation of the double-tooth connection structure and pruning shears provided in Example 1 of the utility model;

[0024] Figure 2 This is a schematic diagram of the connection structure provided by Example 1 of the utility model;

[0025] Figure 3 This is a schematic diagram of a movable blade provided in Example 1 of the utility model;

[0026] Figure 4 This is a schematic diagram of a fixed blade provided in Embodiment 1 of the present utility model;

[0027] Figure 5 It is a schematic diagram of a transmission member provided in Example 1 of the utility model;

[0028] Figure 6This is a schematic diagram of the installation of a multi-tooth connection structure and pruning shears provided in Example 1 of the utility model;

[0029] Figure 7 This is a schematic diagram of the installation of the connection structure and pruning shears provided in Example 2 of the utility model;

[0030] In the figure: 1. pruning shears; 11. fixed blade; 12. movable blade; 121. blade; 122. first transmission part; 123. first transmission tooth; 124. convex plate; 2. connecting structure; 21. transmission member; 211. pull rod; 212. second transmission part; 213. second transmission tooth; 214. groove; 22. fixing member; 23. pad; 221. stopper; 3. extension tube; 4. pull wire;

[0031] In order to show the positions of various parts, the distances or sizes between them are exaggerated and the schematic diagram is for reference only. DETAILED DESCRIPTION

[0032] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those of ordinary skill in the art to which the present invention belongs. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0033] The structure of the electric pruning shears includes a fixed blade and a movable blade that can shear and separate from each other, and a handle with a motor. The fixed blade is fixed on the handle, and the movable blade is connected to the second transmission member of the motor located in the handle. When in use, the switch can be pressed to drive the motor so that the second transmission member drives the movable blade to rotate, so that the movable blade and the fixed shearing blade can be controlled to shear and separate from each other.

[0034] The utility model patent with the publication number CN213991769U discloses a connection mechanism and an electric pruning shear with the connection mechanism, including a housing, a socket at the front end of the housing, a first transmission member in the housing, the first transmission member can rotate relative to the inner wall of the housing, and the first transmission member is also provided with a first connection end and a second connection end; the electric pruning shear includes a handle with a motor and an extension tube with a fixed blade and a movable blade, the handle is connected to the rear end of the connection mechanism, and the extension tube is inserted into the socket, the first connection end is connected to the second transmission member of the handle, and the second connection end is connected to the transmission line in the extension tube. When in use, the motor in the handle will drive the second transmission member to drive the first connection end to rotate, so that the second connection end of the first transmission member will push the transmission line forward and drive the movable blade to rotate relative to the fixed blade, so that branches at high places can be pruned.

[0035] During use, the inventor discovered that the structure had the following technical problems:

[0036] ① When modifying, the short-handled pruning shears need to be disassembled, and then the fixed blade and the movable blade need to be removed. When the high branch shears are restored to short-handled pruning shears, the short-handled pruning shears need to be disassembled again, and then the fixed blade and the movable blade need to be installed. Therefore, the modification process and the restoration process are cumbersome.

[0037] ② The fixed blade and movable blade are easy to be lost after being disassembled, or a special position for placing the fixed blade and movable blade is required;

[0038] ③ It is necessary to add two transmission parts and modify many accessories, which increases the number of parts and components and does not utilize tool management.

[0039] Example 1

[0040] In order to solve the above technical problems, the utility model proposes a connection structure 2 for high branch shears, such as Figure 1 As shown, the connection structure 2 is used to connect the pruning shears 1 and the extension section. The pruning shears 1 include a fixed blade 11 and a movable blade 12 , and the extension section includes an extension tube 3 and a pull wire 4 .

[0041] like Figure 2 As shown, the connection structure 2 includes a fixing member 22 and a transmission member 21; the first end of the fixing member 22 (i.e. Figure 2 The lower left end of the fixing member 22 is connected to the fixed blade 11, and the second end of the fixing member 22 (i.e. Figure 2 The transmission member 21 is rotatably connected to the fixing member 22, for example, by a hinge formed by a rotating shaft, and the first end of the transmission member 21 (ie Figure 2 The lower left end of the middle part) is engaged with the movable blade 12, and the second end of the transmission member 21 is connected with the pull wire 4 (i.e. Figure 2 The first and second ends of the transmission member 21 are located at the left and right sides of the hinge, and the rotation of the movable blade 12 can drive the transmission member 21 to rotate and then pull the pull wire 4.

[0042] The connection structure 2 of the utility model utilizes the original fixed blade 11 and movable blade 12 of the pruning shears 1 and the newly added transmission member 21 to realize the modification from the short-handled pruning shears 1 to the high-branch pruning shears. When in use, the movable blade 12 of the pruning shears 1 rotates to drive the transmission member 21 to rotate, and the rotation of the transmission member 21 pulls the axis of the pull wire 4 to move, thereby causing the movable blade at the end of the extension section to rotate relative to the fixed blade, thereby pruning the branches at high places. Compared with the existing connection structure 2, whether it is to modify the short-handled pruning shears 1 into the high-branch pruning shears, or to restore the high-branch pruning shears to the short-handled pruning shears 1, there is no need to disassemble the fixed blade 11 and the movable blade 12, which simplifies the modification process and the restoration process and improves the work efficiency. Moreover, the problem of easy loss of the fixed blade 11 and the movable blade 12 is avoided, and there is no need to set a special position for placing the fixed blade 11 and the movable blade 12. At the same time, only one transmission member 21 is required, which reduces the number of modification accessories and facilitates the management of tools.

[0043] like Figure 3 As shown, the movable blade 12 includes a blade portion 121 and a first transmission portion 122. The blade portion 121 is used to cooperate with the fixed blade 11 to prune branches. The first transmission portion 122 is located at the back of the blade portion 121, and the back refers to the back of the cutting edge of the blade portion 121. Figure 3 The outer edge of the first transmission part 122 is provided with a first transmission tooth 123; Figure 5 As shown, the transmission member 21 includes a rod portion 211 and a second transmission portion 212, the rod portion 211 and the second transmission portion 212 are located at both ends of the hinge, the rod portion 211 is rotatably connected with the pull wire 4, and the outer edge of the second transmission portion 212 is provided with a second transmission tooth 213, and the second transmission tooth 213 is meshed with the first transmission tooth 123. When the movable blade 12 rotates, the transmission member 21 is driven to rotate through the meshing of the first transmission tooth 123 and the second transmission tooth 213, thereby pulling the pull wire 4 to move.

[0044] There are at least one first transmission tooth 123 and one second transmission tooth 213, and the number of the first transmission tooth 123 and the second transmission tooth 213 can be the same or different, for example, there is one first transmission tooth 123 and a plurality of second transmission teeth 213, or there are a plurality of first transmission teeth 123 and a single second transmission tooth 213;

[0045] When both the first transmission tooth 123 and the second transmission tooth 213 are one, a transmission groove is formed between the first transmission tooth 123 of the movable blade 12 and the blade portion 121, and the second transmission tooth 213 is inserted into the transmission groove to realize transmission. In addition, two specific methods are given in this embodiment, such as Figure 1 , Figure 2 As shown, there are two first transmission teeth 123 and two second transmission teeth 213; or Figure 6As shown, there are multiple first transmission teeth 123 and multiple second transmission teeth 213 .

[0046] Since the movable blade 12 and the fixed blade 11 are located on two planes, when the fixed blade 11 is directly attached to the fixed member 22, there is a certain gap between the movable blade 12 and the fixed member 22. In order to ensure the meshing of the transmission member 21 and the movable blade 12, a cushion block 23 is provided between the transmission member 21 and the fixed member 22. The cushion block 23 is used to make the transmission member 21 and the movable blade 12 located on the same plane to ensure the meshing of the transmission member 21 and the movable blade 12 to achieve transmission. The cushion block 23 can be integrally formed with the transmission member 21 or a separate part.

[0047] The first end of the fixing member 22 is detachably connected to the fixed blade 11. Figure 4 As shown, the fixing member 22 is provided with a connection hole, and the fixing member 22 is detachably connected to the fixed blade 11 by bolts or screws, wherein the number of the connection holes can be reasonably selected according to the specific situation. Of course, it can be understood that the fixing member 22 and the fixed blade 11 can also be detachably connected in other ways, such as using a mortise and tenon structure for clamping.

[0048] The second end of the fixing member 22 is detachably connected to the extension tube 3 , and the detachable connection may be by threaded connection or clamping, etc. Of course, it is understandable that the second end of the fixing member 22 may also be integrally formed with the extension tube 3 .

[0049] The fixing member 22 is a plate member, and a stopper 221 is provided on the side of the fixing member 22 facing the pruning shears 1, and the shape of the stopper 221 matches the shape of the outer shell of the pruning shears 1. By matching the shape of the stopper 221 with the pruning shears 1 and coordinating the detachable connection between the fixing member 22 and the fixed blade 11, the connection strength between the connecting structure 2 and the pruning shears 1 is ensured, and the extended section of the high branch shears is prevented from shaking during use. In this embodiment, the stopper 221 is V-shaped. Of course, it can be understood that it can be set to other shapes according to different shapes of the outer shell of the pruning shears 1, and those skilled in the art can make reasonable choices according to actual conditions.

[0050] Example 2

[0051] The difference between this embodiment and the first embodiment lies in the different transmission structures. In this embodiment, the convex plate 124 and the concave groove 214 are used for transmission.

[0052] Specifically, Figure 7As shown, the movable blade 12 includes a cutting edge portion 121 and a first transmission portion 122, the first transmission portion 122 is located on the back of the cutting edge portion 121, and a convex plate 124 is provided on the outer edge of the first transmission portion 122; the transmission member 21 includes a pull rod portion 211 and a second transmission portion 212, the pull rod portion 211 is rotatably connected to the pull wire 4, and a groove 214 is provided on the outer edge of the second transmission portion 212, and the convex plate 124 is inserted into the groove 214.

[0053] In another embodiment, the positions of the convex plate 124 and the groove 214 are swapped. Specifically, the movable blade 12 includes a blade portion 121 and a first transmission portion 122, the first transmission portion 122 is located at the back of the blade portion 121, and the outer edge of the first transmission portion 122 is provided with a groove 214; the transmission member 21 includes a pull rod portion 211 and a second transmission portion 212, the pull rod portion 211 is rotatably connected to the pull wire 4, and the outer edge of the second transmission portion 212 is provided with a convex plate 124, and the convex plate 124 is inserted into the groove 214.

[0054] The transmission of the movable blade 12 and the transmission member 21 is achieved through the cooperation of the convex plate 124 and the groove 214. Furthermore, the outer edge of the convex plate 124 is arc-shaped, and the inner contour of the groove 214 is an arc-shaped that matches the convex plate 124. The transmission efficiency is improved through the cooperation of the arc-shaped convex plate 124 and the arc-shaped groove 214.

[0055] Example 3

[0056] The difference between this embodiment and embodiment 1 is that the transmission structure is different. In this embodiment, a pin shaft and a long slot are used for transmission.

[0057] Specifically, the movable blade 12 includes a blade portion 121 and a first transmission portion 122, wherein the first transmission portion 122 is located at the back of the blade portion 121, and a pin is provided on the first transmission portion 122, and the pin is located on the side of the movable blade 12 facing the fixed member 22; the transmission member 21 includes a pull rod portion 211 and a second transmission portion 212, wherein the pull rod portion 211 is rotationally connected to the pull wire 4, and a long groove is provided on the second transmission portion 212. The pin is inserted into the long groove and can slide in the long groove. The line connecting the rotation center of the movable blade 12 and the rotation center of the transmission member 21 is recorded as the center line, and during the rotation of the movable blade 12, the long groove swings on both sides of the center line.

[0058] In another embodiment, the setting positions of the pin and the long slot are swapped. Specifically, the movable blade 12 includes a blade portion 121 and a first transmission portion 122, the first transmission portion 122 is located on the back of the blade portion 121, and the first transmission portion 122 is provided with a long slot; the transmission member 21 includes a pull rod portion 211 and a second transmission portion 212, the pull rod portion 211 is rotatably connected to the pull wire 4, and the second transmission portion 212 is provided with a pin, and the pin is located on the side of the transmission member 21 away from the fixed member 22. The pin is inserted into the long slot and can slide in the long slot. The line connecting the rotation center of the movable blade 12 and the rotation center of the transmission member 21 is recorded as the center line. During the rotation of the movable blade 12, the long slot swings on both sides of the center line.

[0059] Through the transmission mode of the pin shaft and the long slot, the transmission member 21 and the movable blade 12 do not need to be in the same plane, thus saving the setting of the cushion block 23.

[0060] Example 4

[0061] Based on the connection structure 2 for high branch shears of embodiments 1-3, the embodiment of the utility model further provides a high branch shear, which comprises a pruning shear 1, an extension section and a connection structure 2. Since the above connection structure 2 has the above technical effects, the technical effects of the high branch shears using the connection structure 2 can refer to the above embodiments.

[0062] Although the above describes the specific implementation methods of the utility model in combination with the accompanying drawings, it is not intended to limit the scope of protection of the utility model. Technical personnel in the relevant field should understand that on the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the utility model.

Claims

1. A connection structure for high-branch shears, used to connect pruning shears and an extension section, the pruning shears include a fixed blade and a movable blade, the extension section includes an extension tube and a pull wire, characterized in that: The connection structure includes a fixing part and a transmission part; The first end of the fixed member is connected to the fixed blade, and the second end of the fixed member is connected to the extension tube; the transmission member is rotatably connected to the fixed member, the first end of the transmission member is clamped with the movable blade, and the second end of the transmission member is connected to the pull wire. The rotation of the movable blade can drive the transmission member to rotate and then pull the pull wire.

2. The connection structure for high-branch shears according to claim 1, characterized in that: The movable blade includes a blade portion and a first transmission portion, the first transmission portion is located on the back of the blade portion, and a first transmission tooth is arranged on the outer edge of the first transmission portion; the transmission member includes a pull rod portion and a second transmission portion, the pull rod portion is rotatably connected to the pull wire, and a second transmission tooth is arranged on the outer edge of the second transmission portion, and the second transmission tooth is meshed with the first transmission tooth.

3. The connection structure for high-branch shears according to claim 2, characterized in that: A cushion block is arranged between the transmission member and the fixing member, and the cushion block is used to make the transmission member and the movable blade be located on the same plane.

4. The connection structure for high-branch shears according to claim 1, characterized in that: The first end of the fixing member is detachably connected to the fixed blade; the second end of the fixing member is detachably connected to the extension tube, or the second end of the fixing member is integrally formed with the extension tube.

5. The connection structure for high-branch shears according to claim 1, characterized in that: The fixing member is a plate member, and a stopper is arranged on the side of the fixing member facing the pruning shears, and the shape of the stopper matches the shape of the outer shell of the pruning shears.

6. The connection structure for high-branch shears according to claim 1, characterized in that: The movable blade includes a cutting edge and a first transmission portion, wherein the first transmission portion is located at the back of the cutting edge, and a convex plate is provided on the outer edge of the first transmission portion; the transmission member includes a pull rod portion and a second transmission portion, wherein the pull rod portion is rotatably connected to the pull wire, and a groove is provided on the outer edge of the second transmission portion, and the convex plate is inserted into the groove.

7. The connection structure for high-branch shears according to claim 1, characterized in that: The movable blade includes a cutting edge and a first transmission portion, wherein the first transmission portion is located on the back of the cutting edge and a groove is arranged on the outer edge of the first transmission portion; the transmission member includes a pull rod portion and a second transmission portion, wherein the pull rod portion is rotationally connected to the pull wire, and a convex plate is arranged on the outer edge of the second transmission portion, and the convex plate is inserted into the groove.

8. The connection structure for high-branch shears according to claim 6 or 7, characterized in that: The outer edge of the convex plate is arc-shaped, and the inner contour of the groove is an arc-shaped that matches the convex plate.

9. The connection structure for high-branch shears according to claim 1, characterized in that: The movable blade comprises a blade portion and a first transmission portion, the first transmission portion is located at the back of the blade portion, and a pin is arranged on the first transmission portion; the transmission member comprises a pull rod portion and a second transmission portion, the pull rod portion is rotatably connected with the pull wire, and a long slot is arranged on the second transmission portion, the pin is inserted into the long slot and can slide in the long slot; Alternatively, the movable blade includes a blade portion and a first transmission portion, the first transmission portion is located on the back of the blade portion, and a long groove is provided on the first transmission portion; the transmission member includes a pull rod portion and a second transmission portion, the pull rod portion is rotatably connected to the pull wire, and a pin shaft is provided on the second transmission portion, the pin shaft is inserted into the long groove and can slide in the long groove.

10. A high branch shear, characterized in that: The invention comprises pruning shears, an extension section and a connecting structure for high-branch shears as claimed in any one of claims 1 to 9.

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