Pruning scissors

Abstract

The utility model discloses pruning scissors. The pruning scissors comprise a positioning shaft, a nut, swing teeth, a movable blade, a cylindrical pin, a fixed blade, a machine shell and a machine body. The positioning shaft sequentially penetrates through the swinging teeth, the movable blade, the fixed blade and the machine body and then is fixed with the nut, so that the swinging teeth and the blades are fixed on the machine body; the fixed blade is fixed on the machine body; the swing teeth are provided with cylindrical pins, the movable blade is provided with open notches at corresponding positions, and the cylindrical pins are matched with the notches to enable the swing teeth to drive the movable blade to rotate. According to the technical scheme, the blade replacement structure of the pruning shears is optimized, and blades can be replaced conveniently.

Description

Technical Field

[0001] This utility model relates to an electric tool used in daily life and work, specifically a pair of scissors, such as pruning shears. The core innovation of this case is the further optimization of the blade replacement structure. Background Technology

[0002] Pruning shears are a type of pruning tool commonly used for tasks such as pruning branches. When the blades wear out and need to be replaced, the current replacement method requires disassembling the casing, which is quite cumbersome. If care is not taken during disassembly, the parts may be damaged. Utility Model Content

[0003] The purpose of this utility model is to provide a pruning shear, and the technical problem to be solved is to optimize the blade replacement structure of the pruning shear to facilitate blade replacement.

[0004] The pruning shears include a positioning shaft, a nut, a swivel tooth, a movable blade, a cylindrical pin, a fixed blade, a housing, and a body. The positioning shaft passes through the swivel tooth, the movable blade, the fixed blade, and the body in sequence before being fixed to the nut, thereby fixing the swivel tooth and the blade to the body. The fixed blade is fixed to the body. The swivel tooth has a cylindrical pin, and the movable blade has an open notch at the corresponding position. The cylindrical pin and the notch cooperate to make the swivel tooth drive the movable blade to rotate.

[0005] The positioning shaft is a T-shaped column structure with a rounded side and a flat side. The rounded side cooperates with the round hole of the swing tooth and the round hole of the blade to facilitate the movement and rotation of the swing tooth and the movable blade. The flat side cooperates with the flat hole of the fixed blade and the flat hole of the machine body to facilitate the positioning shaft and nut to be fixed on the machine body and not rotate.

[0006] A shim is provided between the positioning shaft and the swing tooth. The shim is hollow inside to facilitate the passage of the positioning shaft. At the same time, the surface of the shim that contacts the swing tooth has a roller to facilitate the rotation of the swing tooth.

[0007] The swing tooth has a fan-shaped portion, which has teeth that mesh with bevel teeth inside the body.

[0008] The oscillating tooth and the cylindrical pin are an integral structure.

[0009] The nut is fitted with a rubber sleeve, the inner cavity of which corresponds to the structure of the nut.

[0010] The cylindrical pin is located near the middle of the oscillating tooth.

[0011] The notch is located at the edge of the movable blade.

[0012] The housing has an open opening at the end, where the positioning shaft and nut are located.

[0013] The open opening has a C-shaped structure.

[0014] The beneficial effects of this utility model are: by designing an open notch structure at the end of the movable blade, i.e. the tail in the figure, when the movable blade needs to be replaced, it is only necessary to loosen and pull out the positioning shaft, pull the old movable blade outward, and then install the new movable blade inward and re-insert the positioning shaft and nut for assembly. There is no need to disassemble the housing, which simplifies the installation steps, reduces the disassembly and assembly process, and makes it more convenient to use. Attached Figure Description

[0015] Figure 1 This is a diagram of pruning shears;

[0016] Figure 2 yes Figure 1 A schematic diagram showing the separation of the housing from other parts of a pruning shears;

[0017] Figure 3 This is a schematic diagram of the assembly of the parts after the housing is removed from the head of the pruning shears.

[0018] Figure 4 yes Figure 3 A schematic diagram of the disassembled state of the components;

[0019] Figure 5 yes Figure 4 A schematic diagram of the component from another angle;

[0020] In the picture

[0021] 1. Positioning shaft; 11. Top cap; 12. Rounded side surface; 13. Flat surface;

[0022] 2. Nut;

[0023] 3. Orb teeth; 31. Sector-shaped part; 32. Pin hole;

[0024] 4. Movable blade; 41. Notch;

[0025] 5. Cylindrical pin;

[0026] 6. Secure the blade;

[0027] 7. Housing; 71. Opening;

[0028] 8. Airframe; 81. Aluminum parts; 82. Bevel gears;

[0029] 91. Round hole, 92. Flat hole, 93. Gasket, 94. Rubber sleeve. Detailed Implementation

[0030] Please refer to Figures 1 to 4The pruning shears in the picture are mainly designed with components such as positioning shaft 1, nut 2, swing tooth 3, movable blade 4, cylindrical pin 5, fixed blade 6, housing 7, and body 8. The main innovation of this case is the optimized design of movable blade 4, which makes it easy to be rotated by swing tooth 3, and movable blade 4 can be pulled out without disassembling housing 7.

[0031] The positioning shaft 1 and nut 2 in the figure are used together as a locking assembly, thereby fixing the swing gear 3, movable blade 4, and fixed blade 6 to the aluminum part 81 of the machine body 8. The positioning shaft 1 in the figure is also called the fixed shaft. It adopts a T-shaped column design. Its top is a structure similar to a top cap 11. The middle and lower parts are designed with a circular side surface 12 and a flat surface 13. The circular side surface 12 is a ring-shaped structure that can cooperate with the circular hole 91. In this way, the circular hole 91 on the swing gear 3 and the circular hole 91 on the movable blade 4 can cooperate with the circular side surface 12 without affecting their rotation. The flat surface 13 is a flat structure that can cooperate with the flat hole 92 on the fixed blade 6 and the flat hole 92 on the machine body 8. This ensures that the positioning shaft 1 is always assembled on the aluminum part 81 of the fixed blade 6 and the machine body 8 in a plug-in manner and will not rotate, thus ensuring the positioning shaft 1 is limited and fixed. The aforementioned flat hole 92 is a racetrack-shaped hole, also called a hole-like structure with a flat square shape for the circular hole 91. Through the above design, the positioning shaft 1 can sequentially pass through the swing tooth 3, the movable blade 4, the fixed blade 6, and the aluminum part 81 before being screwed and fixed to the nut 2, thereby fixing the swing tooth 3, the movable blade 4, and the fixed blade 6 onto the aluminum part 81. In use, a washer 93 structure is provided between the top of the swing tooth 3 and the positioning shaft 1. This washer 93 also has an inner circular hole 91 to facilitate the passage of the positioning shaft 1. Simultaneously, the washer 93 is designed with multiple rollers facing the swing tooth 3 to facilitate its rotation. The nut 2 in the figure has a conventional structure, with its entire length and inner surface having internal threads to ensure screwing into the external threads at the bottom of the positioning shaft 1. The nut 2 is also fitted with a rubber sleeve 94, the inner cavity structure of which corresponds to the outer contour of the nut 2. In practical applications, other types of locking components can also be used.

[0032] The swing tooth 3 in the figure is similar in structure to the existing swing tooth 3. Its head has a round hole 91, and its tail has a fan-shaped section 31. Multiple teeth are evenly arranged in a fan shape on the fan-shaped section 31. These teeth mesh with the bevel gear 82 inside the body 8, so that when the bevel gear 82 rotates, it drives the swing tooth 3 to rotate. To facilitate the installation of the cylindrical pin 5, a pin hole 32 is designed. This pin hole 32 is located near the center, allowing the cylindrical pin 5 to be installed in it.

[0033] The movable blade 4 in the figure adopts the existing design, such as the circular hole 91 for the positioning shaft 1 to pass through. The main optimization of this movable blade 4 is the addition of an open notch 41 at the tail, i.e., the edge, replacing the existing closed circular hole 91. This facilitates the removal and insertion of the movable blade 4. The position of the notch 41 is aligned with the position of the cylindrical pin 5 on the swing tooth 3. Thus, when the swing tooth 3 is driven to rotate, it can drive the movable blade 4 to swing through the cylindrical pin 5 and the notch 41. In practical applications, the specific outline and size of the notch 41 can be selected according to the model of the pruning shears.

[0034] The cylindrical pin 5 in the figure has a cylindrical structure, which is a conventional pin structure. It can be installed on the oscillating tooth 3 by interference fit or directly integrated with the oscillating tooth 3. In practical applications, the cylindrical pin 5 can also adopt other structures, as long as it can enable the oscillating tooth 3 to drive the movable blade 4 to swing.

[0035] The fixed blade 6 in the figure can adopt an existing design, which has a flat hole 92 inside and is fixed to the aluminum part 81 of the body 8.

[0036] The housing 7 in the figure can adopt the existing design of the housing 7 of pruning shears, which is composed of two housings spliced ​​together. In this case, the end position where it cooperates with the positioning shaft 1, nut 2 and other components is designed as an open opening 71, such as a C-shaped opening structure design, so that the positioning shaft 1, gasket 93, nut 2 and other components can be inserted and removed.

[0037] The body 8 in the figure can adopt the existing body 8 structure, which has components such as motor, bevel gear 82, and aluminum part 81 inside. The electric motor drives the bevel gear 82 to rotate, and the aluminum part 81 serves as a fixing part for fixing the blade 6 and other accessories. The aluminum part 81 is a common part name for pruning shears. Its specific functions and structure information can be found in the prior art. The main feature of this application is that it has been drilled to align the parts.

[0038] With the above configuration, both the movable blade 4 and the swing tooth 3 rotate around the positioning shaft 1. The positioning shaft 1 and the aluminum part 81 are in a flat fit. The positioning shaft 1 and the nut 2 cooperate to achieve locking and limiting. With the nut 2 and the positioning shaft 1 removed, the old movable blade 4 can be pulled out from the front, and then the new movable blade 4 can be inserted and the positioning shaft 1 and nut 2 can be reinstalled and fixed.

[0039] The specific embodiments described above are merely illustrative of the present technical solution and are not intended to limit the present technical solution. In the description of the present technical solution, it should be noted that terms such as "upper" and "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are only for the convenience of describing the present technical solution and simplifying the description, and do not indicate or imply that the device or element 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 the present technical solution.

[0040] Furthermore, in the description of this technical solution, it should be noted that, unless otherwise explicitly specified and limited, the terms "fixed" and "fitting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this technical solution according to the specific circumstances.

[0041] Although embodiments of the present technical solution have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present technical solution, the scope of which is defined by the appended claims and their equivalents.

Claims

1. Pruning shears, characterized by: The assembly includes a positioning shaft (1), a nut (2), a swing tooth (3), a movable blade (4), a cylindrical pin (5), a fixed blade (6), a housing (7), and a body (8). The positioning shaft (1) passes through the swing tooth (3), the movable blade (4), the fixed blade (6), and the body (8) in sequence and is then fixed to the nut (2), thereby fixing the swing tooth (3) and the blade to the body (8). The fixed blade (6) is fixed to the body (8). The swing tooth (3) has a cylindrical pin (5), and the movable blade (4) has an open notch (41) at the corresponding position. The cylindrical pin (5) and the notch (41) cooperate to enable the swing tooth (3) to drive the movable blade (4) to rotate.

2. The pruning shears according to claim 1, characterized in that: The positioning shaft (1) is a T-shaped column structure with a round side (12) and a flat side (13). The round side (12) is matched with the round hole (91) of the swing tooth (3) and the round hole (91) of the blade to facilitate the movement of the swing tooth (3) and the movable blade (4). The flat side (13) is matched with the flat hole (92) of the fixed blade (6) and the flat hole (92) of the machine body (8) to facilitate the positioning shaft (1) and the nut (2) to be fixed on the machine body (8) without rotating.

3. The pruning shears according to claim 1 or 2, characterized in that: There is a gasket (93) between the positioning shaft (1) and the swing tooth (3). The gasket (93) is hollow inside to facilitate the passage of the positioning shaft (1). At the same time, the surface of the gasket (93) that is in contact with the swing tooth (3) has a roller to facilitate the rotation of the swing tooth (3).

4. The pruning shears according to claim 1, characterized in that: The swing tooth (3) has a fan-shaped portion (31) which has teeth that mesh with bevel teeth (82) inside the body (8).

5. The pruning shears according to claim 1, characterized in that: The swing tooth (3) and the cylindrical pin (5) are an integral structure.

6. The pruning shears according to claim 1, characterized in that: The nut (2) is fitted with a rubber sleeve (94), the inner cavity of which corresponds to the structure of the nut (2).

7. The pruning shears according to claim 1, characterized in that: The cylindrical pin (5) is located near the middle of the sway tooth (3).

8. The pruning shears according to claim 3, characterized in that: The notch (41) is located at the edge of the movable blade (4).

9. The pruning shears according to claim 1, characterized in that: The housing (7) has an open opening (71) at the end position, and the positioning shaft (1) and nut (2) are arranged at the opening (71).

10. The pruning shears according to claim 9, characterized in that: The open opening (71) is a C-shaped structure.

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