Garden tree shears with clamping shear structure

Abstract

The utility model belongs to the technical field of landscaping maintenance tools, and particularly relates to a pair of garden tree shears with a clamping shear structure. The clamping shear head and the double-cutting tool bit are arranged, and the existing technical defect that branches slide when being sheared in the shear head is overcome. Comprising a tool bit assembly and handle assemblies, the tool bit assembly comprises a limiting tool bit and a cutting tool bit, and the tail end of the limiting tool bit and the tail end of the cutting tool bit are each connected with one handle assembly; the cutting tool bit comprises a cutting connecting rod, a front cutter and a back cutter, the cutting connecting rod is connected with the front cutter, the limiting tool bit is provided with a rotating hinge shaft to enable the front cutter to be arranged on the front face of the limiting tool bit, the limiting tool bit further enables the back cutter to be arranged on the back face of the limiting tool bit, and the front cutter and the back cutter rotate together under connection of the rotating hinge shaft. The double-cutter-head cutting scissors are provided with the clamping scissors head and the double-cutter-head, the double-cutter-head is of a novel structure that a front cutter body and a back cutter body are arranged on a cutting positioning shaft, the limiting cutter head structure is of a sectional structure, the flexible use range is wide, and a unique clamping hook is further arranged.

Description

Technical Field

[0001] The utility model belongs to the technical field of garden greening maintenance tools, and particularly relates to a garden tree shear provided with a clamping shear structure. Background Art

[0002] A garden tree shear is a tool specifically used for pruning branches. Generally, it includes a left shear component and a right shear component hinged to form a shear structure, and a long handle arranged on the left shear component and the right shear component to play a lever role. For example, a labor-saving branch pruning device with the application number CN201721446367.1 includes a shear, a telescopic joint, a small telescopic pusher, an LED lighting lamp, and an electric push rod. The shear is installed inside a lengthened plate through a connecting bolt. The lengthened plate is installed on the top of the telescopic joint. The electric push rod is installed on the inner wall of the bottom surface of the handle, and a telescopic rod is installed at the output end of the electric push rod. The telescopic joint is installed on the telescopic rod of the electric push rod. The two end rods of the small telescopic pusher are respectively installed on the outer wall of one side of the handle. An electric control spring is installed on the inner wall of the bottom surface of the telescopic joint. The LED lighting lamp is installed on the electric control spring. Storage batteries are installed inside the telescopic joints on both sides of the LED lighting lamp. The utility model is equipped with a small telescopic pusher, which can provide some external force for the opening and closing of the handle during work. People can easily cut off branches, and can also easily cut off some thicker branches, which is more labor-saving. However, what is actually required to cut off branches is that the structure at the head end of the shear can perform a complete shearing action with the branches. Currently, it is basically a straight knife structure. When the straight knife structure cuts, it will squeeze the branches to slide towards the tip of the knife. Most tree shears only solve the positioning defect of the positioning position for branch shearing, and do not completely solve the problem of branch sliding. Summary of the Invention

[0003] The purpose of the utility model is to provide a garden tree shear provided with a clamping shear structure, which has a clamping shear head and a double cutting head, and solves the existing technical defect that branches slide during shearing in the shear head.

[0004] The utility model realizes the above purpose through the following technical solutions: A garden tree shear provided with a clamping shear structure includes a cutter head assembly and a handle assembly, wherein: the cutter head assembly includes a limiting cutter head and a cutting cutter head. A handle assembly is respectively connected to the tail ends of the limiting cutter head and the cutting cutter head; the cutting cutter head includes a cutting connecting rod, a front knife, and a back knife. The cutting connecting rod is connected to the front knife. The limiting cutter head is provided with a rotating hinge shaft to arrange the front knife on the front surface of the limiting cutter head. The limiting cutter head also arranges the back knife on its own back surface. The front knife and the back knife rotate together under the connection of the rotating hinge shaft.

[0005] Preferably, the limiting cutter head includes a limiting connecting rod and a positioning blade, and the positioning blade is arranged at the top end of the limiting connecting rod. The positioning blade can be of a serrated structure or a sharpened structure, and is used for cutting or sawing. When in a sawing structure, sliding can be further prevented.

[0006] Preferably, the limiting connecting rod of the limiting cutter head includes a cutting straight handle, a hinged handle, and a clamping hook. The hinged handle is arranged at the top of the cutting straight handle, and the bottom is connected to the handle assembly. A rotating hinge shaft is arranged on the hinged handle, and an arc-shaped or L-shaped clamping hook is arranged at the top of the rotating hinge shaft, and the clamping hook is provided with a positioning blade. The clamping hook can hook the branch to solve the problem of the branch being squeezed and sliding towards the tip of the knife. The hinged handle can help the scissors to open and close at different angles, and there is also force when cutting.

[0007] Preferably, the positioning blade is arc-shaped, provided with an arc hook, and a cutting groove is arranged inside the arc hook. The arc hook can form a groove structure, and the branch can be hooked and enter the groove without being squeezed out, which is convenient for positioning and cutting.

[0008] Preferably, the cutting connecting rod includes a knife body rod and a handle connecting rod. The bottom of the knife body rod is connected to the hinge shaft of the handle connecting rod. A positioning shaft nut is arranged at the top of the handle connecting rod. A positioning hole is arranged on the hinged handle of the limiting cutter head. The positioning shaft nut passes through the positioning hole to connect the handle connecting rod and the hinged handle together, and is connected by a rotating shaft. The double-hinged connection structure of the knife body rod can enable the handle connecting rod to adjust the angle independently corresponding to the cutting cutter head, making the opening larger or smaller, so that it can be determined which branches can be cut and which branches are too thick to be the main trunk and do not need to be cut.

[0009] Preferably, the handle assembly includes an outer telescopic tube and an inner telescopic tube. The outer telescopic tube is provided with a positioning buckle, and the positioning buckle buckles and limits the inner telescopic tube to extend to different lengths. The telescopic handle assembly can be convenient for storage and can form a lever structure for easy and labor-saving use.

[0010] Preferably, the front knife and the back knife include an arc knife and a flat knife, and the arc knife and the flat knife are integrally shaped. The arc knife is used for circular cutting, and the flat knife is used for clamping and cutting, with diverse usage methods.

[0011] Preferably, a tube sleeve is arranged at the head end of the inner telescopic tube, and the tube sleeve includes an inner tube limiting sleeve and an outer tube limiting sleeve. Such a combination does not require welding or using a stamping process to make a buckle structure at the top, and it can be disassembled, which is convenient for replacing different handle assemblies, cutting connecting rods, and cutting cutter heads.

[0012] Preferably, the outer tube limiting sleeve is provided with a handle opening and closing lock. After being locked, the handle opening and closing lock can prevent the handle assembly from opening and closing in the non-use state, providing much safety during storage.

[0013] Beneficial effects: The design of the present utility model is reasonable and has strong practicability, with the following beneficial effects: It has a clamping shear head and a double cutting head. The double cutting head is a new structure with a positive knife and a back knife arranged on the cutting and positioning shaft. It is easier to cut than a single knife body and is less likely to be damaged. Moreover, the limiting knife head structure is also a segmented structure, with a wide range of flexible uses and is suitable for cutting different materials. The knife body also has a unique clamping hook, which can hook the tree branch and solve the problem of the tree branch sliding towards the tip of the knife due to extrusion. The articulated handle can help the scissors to have a small or large opening and closing angle, and there is also force when cutting. The arc hook can form a groove structure, and the tree branch can be hooked and enter the groove without being squeezed out, which is convenient for positioning and cutting, and completely solves the existing technical defect of the tree branch sliding during cutting in the scissor head. The telescopic handle assembly can facilitate storage and can form a lever structure for easier and labor-saving use. The inner telescopic tube is provided with a positioning buckle to limit the inner telescopic tube without the need for welding or stamping at the top to make a buckle structure, and it is detachable, which is convenient for replacing different handle assemblies, cutting connecting rods, and cutting knife heads. Description of the Drawings

[0014] Figure 1 Schematic diagram of the overall structure of the main embodiment;

[0015] Figure 2 Overall side three-dimensional view of the main embodiment;

[0016] Figure 3 Exploded structure diagram of the overall main embodiment;

[0017] Figure 4 Front view structure diagram of Embodiment 2;

[0018] Figure 5 Assembly diagram of the knife head assembly and the handle assembly of Embodiment 2;

[0019] Figure 6 Exploded view of Embodiment 2;

[0020] Figure 7 Structure diagram of the limiting knife head and the cutting knife head of Embodiment 2;

[0021] Figure 8 Telescopic structure diagram of the handle assembly.

[0022] In the figure: knife head assembly 1, handle assembly 2, limiting knife head 3A, cutting knife head 3B, cutting connecting rod 4, positive knife 5, back knife 6, rotating articulated shaft 7, limiting connecting rod 8, positioning blade 9, cutting straight handle 10, articulated handle 11, clamping hook 12, arc hook 13, cutting groove 14, knife body rod 15, handle connecting rod 16, positioning shaft nut 17, positioning hole 18, outer telescopic tube 19, inner telescopic tube 20, positioning buckle 21, arc knife 22, flat knife 23, tube sleeve 24, inner tube limiting sleeve 25, outer tube limiting sleeve 26, handle opening and closing lock 27. Detailed implementation mode

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present utility model.

[0024] Main embodiment: As Figure 1-3 shown, a garden tree shear with a clamping shear structure includes a cutter head assembly 1 and a handle assembly 2, wherein: the cutter head assembly 1 includes a limit cutter head 3A and a cutting cutter head 3B; As Figure 3 shown, the cutting cutter head 3B includes a cutting connecting rod 4, a front cutter 5, and a back cutter 6. The top of the cutting connecting rod 4 is the front cutter 5, and the two sides are of an integral structure. That is, when holding the handle assembly 2 to perform the opening and closing action, the cutting connecting rod 4 will be linked, and the front cutter 5 will perform the shearing; As Figure 7 shown, the front cutter 5 and the back cutter 6 include an arc cutter 22 and a flat cutter 23, and the arc cutter 22 and the flat cutter 23 are integrally shaped. The arc cutter is used for circular cutting, and the flat cutter is used for clamping and shearing, with diverse usage methods.

[0025] As Figure 2 、 3 shown, the limit cutter head 3A is provided with a rotating hinge shaft 7 to set the front cutter 5 on the front of the limit cutter head 3A. At the end of the rotating hinge shaft 7, the limit cutter head 3A also sets the back cutter 6 on the back of the limit cutter head 3A. That is, the rotating hinge shaft 7, the front cutter 5, and the back cutter 6 will be arranged on both sides of the limit cutter head 3A like an I-shaped cross-section structure, and the front cutter 5 and the back cutter 6 will rotate together under the connection of the rotating hinge shaft 7. In addition to this structure, in fact, the connecting part of the front cutter 5 and the back cutter 6, that is, the outer side, can be integrally cast together, that is, a concave groove structure is formed, which can also achieve the effect of not hindering the limit connecting rod 8, and the front cutter and the back cutter shear together.

[0026] The limit cutter head 3A includes a limit connecting rod 8 and a positioning blade 9, and the positioning blade 9 is arranged at the top of the limit connecting rod 8. A rotating hinge shaft 7 is arranged on the limit connecting rod 8 and is connected to the cutting connecting rod 4. The positioning blade 9 is arc-shaped and is provided with an arc hook 13, and a cutting groove 14 is arranged inside the arc hook 13. The arc hook can form a groove structure, and the tree branch can be hooked and enter the groove without being squeezed out, which is convenient for positioning and cutting. The positioning blade 9 can be of a serrated structure or a sharpened structure, used for cutting or sawing. When it is a sawing structure, it can further prevent sliding.

[0027] The specific operation is as Figure 1As shown, a handle assembly 2 is respectively connected to the ends of the limit cutter head 3A and the cutting cutter head 3B. One can hold a handle assembly 2 in each hand and perform scissor opening and closing actions to carry out trimming. For example, Figure 2 As shown, during cutting, the positive cutter and the back cutter will open and close coaxially. When the cutting action is closed, the positive cutter will cut into the cutting groove 14, and the back cutter will cut into the back of the positioning blade 9. This double-cut structure is very useful for cutting strong branches, and it is also more convenient for branches with a certain curvature.

[0028] When dealing with relatively thick branches, if one wants to operate with less effort, the lever principle can be utilized. This tree shear has been modified by changing the handle assembly 2 to be telescopic, as Figure 6 、 8 As shown, the handle assembly 2 includes an outer telescopic tube 19 and an inner telescopic tube 20. The outer telescopic tube 19 is provided with a positioning buckle 21, and the positioning buckle 21 snaps and limits the inner telescopic tube 20 to extend to different lengths. The telescopic handle assembly can not only facilitate storage but also form a lever structure for easier use with less effort.

[0029] Embodiment 2, as Figure 4-7 As shown, on the basis of Embodiment 1, the linkage and opening and closing structure of the limit cutter head 3A and the cutting cutter head 3B is further improved, and a hinge structure is added to make the connection structure between the limit cutter head 3A and the cutting cutter head 3B stronger so that not all the force is concentrated on 1 rotating hinge shaft, causing the rotating hinge shaft to be easily broken. The limit connecting rod 8 of the limit cutter head 3A includes a cutting straight handle 10, a hinge handle 11, and a clamping hook 12. The hinge handle 11 is provided at the top of the cutting straight handle 10, and the bottom is connected to the handle assembly 2. A rotating hinge shaft 7 is provided on the hinge handle 11, and an arc-shaped or L-shaped clamping hook 12 is provided at the top of the rotating hinge shaft 7. The clamping hook 12 is provided with a positioning blade 9. The clamping hook can hook the branch to solve the problem of the branch being squeezed and sliding towards the tip of the knife. The hinge handle can help the scissor opening and closing angle to be large or small, and there is also force during cutting.

[0030] Preferably, the cutting connecting rod 4 includes a knife body rod 15 and a handle connecting rod 16. The bottom of the knife body rod 15 is hinged to the handle connecting rod 16. A positioning shaft nut 17 is provided at the top of the handle connecting rod 16. A positioning hole 18 is provided on the hinge handle 11 of the limit cutter head 3A. The positioning shaft nut 17 passes through the positioning hole 18 to connect the handle connecting rod 16 and the hinge handle 11 together and is connected as a rotating shaft. The double-hinged connection structure of the knife body rod 15 can enable the handle connecting rod 16 to adjust the angle independently corresponding to the cutting cutter head 3B, making the opening larger or smaller, so that it can be determined which branches can be cut and which branches are too thick to be the main trunk and should not be cut.

[0031] Preferably, a tube sleeve 24 is provided at the head end of the inner telescopic tube 20. The tube sleeve 24 includes an inner tube limiting sleeve 25 and an outer tube limiting sleeve 26. Such a combination does not require top welding or the use of stamping to make a snap structure, and it is detachable, facilitating the replacement of different handle assemblies, cutting connecting rods, and cutting tool heads.

[0032] Preferably, a handle opening / closing lock 27 is provided on the outer tube limiting sleeve 26. After being locked, the handle opening / closing lock can prevent the handle assembly from opening / closing in the non-use state, providing much safety during storage.

[0033] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, in any regard, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed within the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0034] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A garden tree shears with a clamping shear structure, comprising a cutter head assembly (1) and a handle assembly (2), wherein: The blade head assembly (1) comprises a limiting blade head (3A) and a cutting blade head (3B), and the tail ends of the limiting blade head (3A) and the cutting blade head (3B) are each connected to a handle assembly (2); the cutting blade head (3B) comprises a cutting connecting rod (4), a front blade (5), and a back blade (6), and the cutting connecting rod (4) is connected to the front blade (5). The limiting blade head (3A) is provided with a rotating hinge shaft (7) to arrange the front blade (5) on the front side of the limiting blade head (3A), and the limiting blade head (3A) also arranges the back blade (6) on its back side, and the front blade (5) and the back blade (6) rotate together under the connection of the rotating hinge shaft (7).

2. A garden tree shears with a clamping shear structure according to claim 1, characterized in that: The limiting blade head (3A) comprises a limiting connecting rod (8) and a positioning blade (9), and the positioning blade (9) is arranged at the top end of the limiting connecting rod (8).

3. A garden tree shears with a clamping shear structure according to claim 1 or 2, characterized in that: The limiting connecting rod (8) of the limiting blade head (3A) comprises a straight cutting handle (10), an articulated handle (11), and a clamping hook (12); the top of the straight cutting handle (10) is provided with the articulated handle (11), and the bottom is connected to the handle assembly (2); a rotating hinge shaft (7) is provided on the articulated handle (11); the top of the rotating hinge shaft (7) is provided with an arc-shaped or L-shaped clamping hook (12); and the clamping hook (12) is provided with a positioning blade (9).

4. The garden tree shears with a clamping shear structure according to claim 3, characterized in that: The positioning blade (9) is arc-shaped and is provided with an arc hook (13), and a cutting groove (14) is provided inside the arc hook (13).

5. The garden tree shears with a clamping shear structure according to claim 1, characterized in that: The cutting link (4) comprises a knife body rod (15) and a handle link (16); the bottom of the knife body rod (15) and the handle link (16) are connected by an articulated shaft; a positioning shaft nut (17) is arranged on the top of the handle link (16); a positioning hole (18) is arranged on the articulated handle (11) of the limiting knife head (3A); the positioning shaft nut (17) passes through the positioning hole (18) to connect the handle link (16) and the articulated handle (11) together, and is connected by a rotating shaft.

6. The garden tree shears with a clamping shear structure according to claim 3, characterized in that: The handle assembly (2) comprises an outer telescopic tube (19) and an inner telescopic tube (20); the outer telescopic tube (19) is provided with a positioning buckle (21); the positioning buckle (21) is buckled to limit the inner telescopic tube (20) to extend to different lengths.

7. The garden tree shears with a clamping shear structure according to claim 1, characterized in that: The front blade (5) and the back blade (6) comprise a curved blade (22) and a flat blade (23), and the curved blade (22) and the flat blade (23) are integrally shaped.

8. The garden tree shears with a clamping shear structure according to claim 6, characterized in that: A pipe sleeve (24) is provided at the head end of the inner telescopic pipe (20), and the pipe sleeve (24) comprises an inner pipe limiting sleeve (25) and an outer pipe limiting sleeve (26).

9. The garden tree shears with a clamping shear structure according to claim 8, characterized in that: The outer tube limiting sleeve (26) is provided with a handle opening and closing lock (27).

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