High-branch scissors transmission mechanism and high-branch scissors

Abstract

The high branch shears transmission mechanism comprises a cutter body and a swing cutter shaft, a connecting piece and a 7-shaped swing cutter gear are sequentially connected to the swing cutter shaft in series, a blocking piece is arranged between the connecting piece and the 7-shaped swing cutter gear, one end face of the swing cutter shaft is fixedly connected with the cutter body through a pull rod piece, and the other end face of the swing cutter shaft is fixedly connected with the cutter body. And the other end face of the cutter swinging shaft is provided with a fixing piece which is locked with the cutter body. Comprising a lengthened pipe, a fixed shear head and a movable shear head are arranged at the front end of the lengthened pipe, a transmission line connected with the movable shear head is arranged in the lengthened pipe, a machine base is arranged at the tail end of the lengthened pipe, and the machine base and the transmission line are both fixed to the high branch shear transmission mechanism. The invention is beneficial to breaking through the existing single structure mode, and is more beneficial to meeting the requirement on the basis of keeping normal operation.

Description

Technical Field

[0001] The present invention relates to the technical field of garden pruning tools, and in particular to a transmission mechanism for a high branch shear and a high branch shear. Background Art

[0002] The structure of the existing 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 a 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 blade can be sheared and separated from each other. In order to facilitate pruning of high branches, a connecting mechanism and an electric pruning shear with the connecting mechanism disclosed in a Chinese invention patent with the authorization announcement number CN213991769U appear. The motor located in the handle is provided with a transmission gear, and the arc tooth surface is in transmission connection with the transmission gear. This kind of transmission between gears has a relatively single structure and cannot meet the production and manufacturing requirements. According to this situation, it is necessary to make improvements. Summary of the Invention

[0003] (1) Technical Problems to be Solved

[0004] In view of the deficiencies in the prior art, the present invention provides a transmission mechanism for a high branch shear and a high branch shear, which breaks through the single structure mode in the prior art and is more conducive to meeting the requirements of production and manufacturing.

[0005] (2) Technical Solutions to be Adopted

[0006] In order to achieve the above object, the technical solutions adopted by the present invention are as follows:

[0007] A transmission mechanism for a high branch shear includes a tool body and a swing knife shaft provided at the front end of the tool body. A connecting member and a 7-shaped swing knife gear are sequentially connected in series on the swing knife shaft. A blocking member for preventing the 7-shaped swing knife gear from being pressed to death is provided between the connecting member and the 7-shaped swing knife gear. One end face of the swing knife shaft is fixedly connected to the tool body through a pull rod member, and a fixing member is provided on the other end face of the swing knife shaft to lock with the tool body. A handle for opening is provided on the tool body.

[0008] Preferably, the blocking member is a metal ring; or, the blocking member is integrally provided with one side end face of the connecting member; or, the blocking member is integrally provided with one side end face of the 7-shaped swing knife gear.

[0009] Preferably, when the blocking member is integrally provided with one side end face of the connecting member or one side end face of the 7-shaped swing knife gear, the blocking member is convex on one side end face of the connecting member or one side end face of the 7-shaped swing knife gear.

[0010] Preferably, the thickness of the blocking member is from 2 millimeters to 8 millimeters.

[0011] Preferably, the connecting member includes a connecting block with one end sleeved on the swing knife shaft, and at least one locking member is installed on the connecting block.

[0012] Preferably, the pull rod member includes a pull rod body fixed to one end of the swing knife shaft, and the other end of the pull rod body is fixed to the knife body through a stabilizing member.

[0013] Preferably, the fixing member includes a fixing plate arranged at the front end of the knife body. One end of the fixing plate is fixed to the knife body at the same position as the swing knife shaft through a stabilizing member, and the other end of the fixing plate is fixedly locked to the knife body through a locking member.

[0014] Preferably, the handle includes a trigger movably arranged on one side surface of the knife body. A stabilizing plate is arranged on the trigger, and the stabilizing plate is fixed to the knife body at a position below the lower side of the 7-shaped swing knife gear. A knife shell is arranged on the knife body, and a motor is arranged inside the rear part of the knife shell, and the motor is connected to the trigger.

[0015] In addition, the present invention also provides a long branch shear, which includes an extension tube. A fixed cutting head and a movable cutting head are arranged at the front end of the extension tube. A transmission line connected to the movable cutting head is arranged inside the extension tube. A machine base is arranged at the tail end of the extension tube, and the machine base is fixed to the connecting member of the long branch shear transmission mechanism as described above, and the other end of the transmission line is fixed to the 7-shaped swing knife gear of the long branch shear transmission mechanism as described above.

[0016] (III) Technical effects to be achieved

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] First, the present invention includes a knife body and a swing knife shaft arranged at the front end of the knife body. A connecting member and a 7-shaped swing knife gear are sequentially connected in series on the swing knife shaft. A blocking member for preventing the 7-shaped swing knife gear from being jammed is arranged between the connecting member and the 7-shaped swing knife gear. One end surface of the swing knife shaft is fixedly connected to the knife body through a pull rod member, and a locking connection is provided between the other end surface of the swing knife shaft and the knife body through a fixing member. A handle for opening is arranged on the knife body. It can not only change the transmission between two gears in the prior art, reduce the problem of reduced service life due to wear between the two, but also is beneficial to breaking through the existing single structure, more conducive to meeting the requirements of production and manufacturing, and the operation is stable, more conducive to meeting the use requirements.

[0019] Second, the present invention includes an extension tube. A fixed cutting head and a movable cutting head are provided at the front end of the extension tube. A transmission line connected to the movable cutting head is provided inside the extension tube. A machine base is provided at the rear end of the extension tube. The machine base is fixed to the connecting member of the high-branch shear transmission mechanism as described above. The other end of the transmission line is fixed to the 7-shaped swing knife gear of the high-branch shear transmission mechanism as described above through a connecting seat. This application in the high-branch shear is more conducive to conveniently shearing high-branch objects, meeting the user's usage requirements, and at the same time being able to continue to keep the user operation simple and convenient, facilitating large-scale popularization and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of a high-branch shear transmission mechanism of the present invention.

[0021] Figure 2 It is an overall schematic diagram of a high-branch shear transmission mechanism of the present invention.

[0022] Figure 3 It is an assembly schematic diagram of a swing knife shaft, a connecting member, a 7-shaped swing knife gear, a blocking member, and a pull rod member in a high-branch shear transmission mechanism of the present invention.

[0023] Figure 4 It is a schematic diagram of a single blocking member in a high-branch shear transmission mechanism of the present invention.

[0024] Figure 5 It is an embodiment schematic diagram of a blocking member and a connecting member in a high-branch shear transmission mechanism of the present invention.

[0025] Figure 6 It is an embodiment schematic diagram of a blocking member and a 7-shaped swing knife gear in a high-branch shear transmission mechanism of the present invention.

[0026] Figure 7 It is an overall embodiment schematic diagram of a high-branch shear transmission mechanism of the present invention.

[0027] Figure 8 It is a schematic diagram of a high-branch shear structure of the present invention.

[0028] In the figure: 1, knife body; 2, swing knife shaft; 3, connecting member; 4, 7-shaped swing knife gear; 5, blocking member; 6, pull rod member; 7, fixing member; 8, handle; 9, knife shell; 31, connecting block; 32, locking member; 61, pull rod body; 62, stabilizing member; 71, fixing plate; 72, stabilizing member; 73, locking member; 81, trigger; 82, stabilizing plate; 91, motor.

[0029] 10, extension tube; 20, fixed cutting head; 30, movable cutting head; 40, machine base; 50, connecting seat. DETAILED DESCRIPTION OF THE INVENTION

[0030] In the description of the present invention, it should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0031] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, the meaning of "a plurality" is two or more, unless otherwise specifically defined. The meaning of "several" is one or more, unless otherwise specifically defined.

[0032] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0033] To make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the drawings and embodiments. However, it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the scope of the present invention. In addition, in the following description, the descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present invention.

[0034] Example 1: Refer to Figure 1 、 Figure 2 and Figure 3, A high-branch shear drive mechanism includes a knife body 1 and a swing knife shaft 2 provided at the front end of the knife body 1. A connecting member 3 and a 7-shaped swing knife gear 4 are sequentially connected in series on the swing knife shaft 2. Since there is a gap between the connecting member 3 and the 7-shaped swing knife gear 4, a blocking member 5 is provided between the connecting member 3 and the 7-shaped swing knife gear 4 to prevent the 7-shaped swing knife gear 4 from being pressed to death. One end face of the swing knife shaft 2 is fixedly connected to the knife body 1 through a pull rod member 6, and on the other end face of the swing knife shaft 2, it is locked with the knife body 1 through a fixing member 7. A handle 8 for opening is provided on the knife body 1. This structure is beneficial to breaking through the existing single structure and is more conducive to meeting the requirements of production and manufacturing.

[0035] Embodiment 2: It can be described based on Embodiment 1. As Figure 4 shown, the blocking member 5 is a metal ring (preferably made of iron material), which reduces the production and manufacturing requirements of the connecting member 3 and the 7-shaped swing knife gear 4 and is also convenient for installation; as Figure 5 shown, or, the blocking member 5 is integrally provided with one side end face of the connecting member 3; as Figure 6 shown, or, the blocking member 5 is integrally provided with one side end face of the 7-shaped swing knife gear 4. It can be seen that there are various forms and a large selection range. As Figure 4 and Figure 5 shown, when the blocking member 5 is integrally formed with one side end face of the connecting member 3 or one side end face of the 7-shaped swing knife gear 4, the blocking member 5 is convex on one side end face of the connecting member 3 or one side end face of the 7-shaped swing knife gear 4, which is convenient for implementation. In this embodiment, the thickness of the blocking member 5 is 2 mm to 8 mm, which is also beneficial to solving the gap problem between the connecting member 3 and the 7-shaped swing knife gear 4. Preferably, the thickness of the blocking member 5 is 4 mm. In the present invention, the connecting member 3 and the 7-shaped swing knife gear 4 are made of metal material, preferably metal material.

[0036] Embodiment 3: It can be described based on Embodiment 1 or Embodiment 2. As Figure 1 、 Figure 2 、 Figure 3 and Figure 7 shown, the connecting member 3 includes a connecting block 31 sleeved on one end of the swing knife shaft 2. At least one locking member 32 is installed on the connecting block 31. The locking member 32 is a bolt or a screw, and in this embodiment, three locking members 32 are used, which is beneficial for connecting and fixing with external equipment and is convenient for manual installation and disassembly.

[0037] Embodiment 4: It can be described based on Embodiment 1 or Embodiment 2 or Embodiment 3. As Figure 1 、 Figure 2 、 Figure 3 and Figure 7As shown, the pull rod member 6 includes a pull rod body 61 fixed to one end of the swing knife shaft 2, and the other end of the pull rod body 61 is fixed to the knife body 1 through a stabilizing member 62. This setting is relatively simple and easy to implement. Further explanation, the stabilizing member 62 is a screw, which is widely available.

[0038] Embodiment 5: It can be described on the basis of Embodiment 1 or Embodiment 2 or Embodiment 3 or Embodiment 4. For example, Figure 1 、 Figure 2 、 Figure 3 and Figure 7 As shown, the fixing member 7 includes a fixing plate 71 provided at the front end of the knife body 1. One end of the fixing plate 71 is fixed to the knife body 1 at the same position as the swing knife shaft 2 through a stabilizing member 72, and the other end of the fixing plate 71 is fixedly locked to the knife body 1 through a locking member 73. This is beneficial to improving the firmness of the structure. Further explanation, both the stabilizing member 72 and the locking member 73 are screws, which is convenient for implementation.

[0039] Embodiment 6: It can be described on the basis of Embodiment 1 or Embodiment 2 or Embodiment 3 or Embodiment 4 or Embodiment 5. For example, Figure 7 As shown, the handle 8 includes a trigger 81 movably provided on one side surface of the knife body 1. A stabilizing plate 82 is provided on the trigger 81, and the stabilizing plate 82 is fixed to the knife body 1 at a position below the side of the 7-shaped swing knife gear 4. This is beneficial to better pressing the trigger 81. Further explanation, a knife shell 9 is provided on the knife body 1. The knife shell 9 covers the knife body 1 and the swing knife shaft 2 to better protect the components on the knife body 1. And a motor 91 is provided inside the rear part of the knife shell 9. The motor 91 is connected to the trigger 81, and a transmission gear (the same as the transmission gear of the motor driving the arc tooth surface at the rear end of the second transmission member disclosed in the authorized publication number CN213991769U, so that the front end of the second transmission member rotates upward) started by the motor 91 is provided on the knife body 1. It is beneficial to realize the switch of the motor 91 through the trigger 81, because the 7-shaped swing knife gear 4 also has an arc that cooperates with the transmission gear.

[0040] Embodiment 7: It can be described on the basis of Embodiment 1 or Embodiment 2 or Embodiment 3 or Embodiment 4 or Embodiment 5 or Embodiment 6. For example, Figure 8 As shown, the present invention also provides a high-branch shear, which includes an extension pipe 10. A fixed cutting head 20 and a movable cutting head 30 are provided at the front end of the extension pipe 10. A transmission line (not marked in the figure) connected to the movable cutting head 30 is provided inside the extension pipe 10. A machine base 40 is provided at the tail end of the extension pipe 10. The machine base 40 is fixed to the connecting member 3 of the high-branch shear transmission mechanism, and the other end of the transmission line is fixed to the 7-shaped swing knife gear 4 of the high-branch shear transmission mechanism through a connecting seat 50. The structure is relatively simple and easy to implement. More specifically,

[0041] When the electric pruning shear of the present invention is in use, the trigger 81 of the handle 8 can be pressed to start the motor 91. The motor 91 will drive the 7-shaped swing knife gear 4 through the transmission gear. The 7-shaped swing knife gear 4 swings back and forth with the swing knife shaft 2 as the fulcrum. When the 7-shaped swing knife gear 4 further causes the connecting seat 50 to push the transmission line forward, the movable cutting head 30 is driven to rotate to a state of being separated from the fixed cutting head 30. When the trigger 81 is released, the motor 91 is turned off. At this time, the transmission line will automatically reset, and the movable cutting head 30 will rotate to a state of shearing with the fixed cutting head 20. In this way, the shearing and separation of the fixed cutting head and the movable blade 52 can be operated, so that the branches at high places can be pruned.

[0042] The standard parts used in this application document can all be purchased from the market. The specific connection methods of each part all adopt conventional means such as bolts and rivets that are mature in the prior art. The internal components of the electric machine all adopt conventional models in the prior art, and its internal structure belongs to the prior art structure. Workers can complete the normal operation of it according to the prior art manual. In addition, the circuit connection adopts the conventional connection method in the prior art, and no specific description will be made here.

[0043] It should be noted that although the above embodiments have been described in this article, the patent protection scope of the present invention is not limited thereby. Therefore, based on the innovative concept of the present invention, the changes and modifications made to the embodiments described in this article, or the equivalent structural or equivalent process transformations made by using the content of the specification and drawings of the present invention, directly or indirectly applying the above technical solutions to other related technical fields, are all included in the protection scope of the present invention patent.

Claims

1. A transmission mechanism for high-branch shears, characterized in that: The invention comprises a knife body (1) and a knife swinging shaft (2) arranged on the front end of the knife body (1); a connecting piece (3) and a 7-shaped knife swinging gear (4) are connected in series in sequence on the knife swinging shaft (2); a blocking piece (5) for preventing the 7-shaped knife swinging gear (4) from being crushed is arranged between the connecting piece (3) and the 7-shaped knife swinging gear (4); one end face of the knife swinging shaft (2) is fixedly connected to the knife body (1) via a pull rod (6); and a locking piece (7) is arranged on the other end face of the knife swinging shaft (2) and is locked with the knife body (1); and a handle (8) for opening is arranged on the knife body (1).

2. The transmission mechanism of the high-branch shears according to claim 1, characterized in that: The blocking member (5) is a metal ring; or the blocking member (5) is integrally arranged with an end surface of one side of the connecting member (3); or the blocking member (5) is integrally arranged with an end surface of one side of the 7-shaped swinging blade gear (4).

3. The transmission mechanism of the high-branch shears according to claim 2, characterized in that: When the blocking member (5) is integral with one end surface of the connecting member (3) or one end surface of the 7-shaped swinging blade gear (4), the blocking member (5) is in a convex shape on one end surface of the connecting member (3) or one end surface of the 7-shaped swinging blade gear (4).

4. The transmission mechanism of the high-branch shears according to claim 2 or 3, characterized in that: The blocking member (5) has a thickness of 2 mm to 8 mm.

5. The transmission mechanism of the high-branch shears according to claim 1, 2 or 3, characterized in that: The connecting member (3) comprises a connecting block (31) with one end sleeved on the swinging knife shaft (2), and at least one locking member (32) is installed on the connecting block (31).

6. The transmission mechanism of the high-branch shears according to claim 1, 2 or 3, characterized in that: The pull rod member (6) comprises a pull rod body (61) fixed on one end of the swinging knife shaft (2); and the other end of the pull rod body (61) is fixed on the knife body (1) via a stabilizing member (62).

7. The transmission mechanism of the high-branch shears according to claim 1, 2 or 3, characterized in that: The fixing member (7) comprises a fixing plate (71) arranged on the front end of the knife body (1); one end of the fixing plate (71) is fixed to the knife body (1) at the same position as the swinging knife shaft (2) via a fixing member (72); and the other end of the fixing plate (71) is fixed and locked to the knife body (1) via a locking member (73).

8. The transmission mechanism of the high-branch shears according to claim 1, 2 or 3, characterized in that: The handle (8) comprises a trigger (81) movably arranged on a side surface of the knife body (1); a stabilizing plate (82) is arranged on the trigger (81); the stabilizing plate (82) is fixed on the knife body (1) at a position below one side of the 7-shaped swinging knife gear (4); a knife housing (9) is arranged on the knife body (1); and a motor (91) is arranged inside the rear part of the knife housing (9); the motor (91) is connected to the trigger (81).

9. A high-branch shears, comprising an extension tube (10), wherein a fixed shearing head (20) and a movable shearing head (20) are arranged at the front end of the extension tube (10), and a transmission line connected to the movable shearing head (20) is arranged inside the extension tube (10), characterized in that: A base (40) is provided at the rear end of the extension tube (10), and the base (40) is fixed on the connecting piece (3) of the high branch shear transmission mechanism as claimed in any one of claims 1 to 8, and the other end of the transmission line is fixed on the 7-shaped swinging blade gear (4) of the high branch shear transmission mechanism as claimed in any one of claims 1 to 8 through a connecting seat (50).

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