Pruning shears

Abstract

The utility model provides a pair of pruning shears which comprises two composite grips, a rotary fixing buckle is movably connected to the upper surfaces of the composite grips, an adjusting spring structure is arranged on the surface of one end of each composite grip, a shear blade is fixedly connected to the surface of one side of each composite grip, and the shear blades are arranged on the surface of the other side of each composite grip. The surface of one side of the other combined grip is fixedly connected with a shear blade, and a positioning shaft is arranged at the crossed position of the shear blades, so that the problems that when a thick trunk branch is subjected to pruning, pruning is strenuous, and when a spring in the combined grip is not used, the spring is in a long-term compressed state, and the pruning effect is poor are solved. Therefore, the problem that the service life of the spring is shortened is solved.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of blade assembly, in particular to a pair of pruning shears. Background Art

[0002] Pruning shears are a kind of gardening tool used to prune the branches of flowers and trees so that the flowers and trees can grow according to the grower's wishes. The pruning shears widely used on the market are similar to ordinary scissors, and are made of two blades connected to the shear handle with the scissors blades cross-axially connected.

[0003] In the invention patent application with application number CN201922207268.3, application publication date 2020.10.20, and name "A Pruning Shears", it includes a fixed handle and a movable handle, characterized in that: the fixed handle has a fixed groove on the side facing the movable handle and a fixed strip is provided at the fixed groove, the length direction of the fixed strip is perpendicular to the movable handle, the fixed strip has an insert block at the end away from its hinge, the cross-section of the insert block is larger than the cross-section of the fixed strip, the movable handle is provided with a slot for inserting the insert block at a position corresponding to the fixed groove, and the movable handle is provided with a locking mechanism for pressing the insert block into the slot on the side facing the fixed handle. When the pruning shears are in a folded state, one end of the fixed strip is connected to the fixed handle, and the insert block at the other end of the fixed strip is inserted into the slot of the movable handle and pressed into the slot by the locking mechanism, thereby achieving complete folding of the pruning shears.

[0004] However, in actual use, the pruning shears are more laborious when facing thicker tree trunks and branches, and the spring inside the pruning shears is in a long-term compressed state when not in use, which easily leads to a reduction in the service life of the spring. Utility Model Content

[0005] 1. Technical problems to be solved by the utility model:

[0006] The utility model provides a pruning shear, which is used to solve the problem that pruning thicker tree trunks and branches is more laborious, and the spring inside the pruning shear is in a long-term compressed state when not in use, which easily leads to a reduction in the service life of the spring.

[0007] 2. Technical solution:

[0008] In order to achieve the above-mentioned purpose, the technical solution provided by the utility model is: a pruning shears, including a composite handle, a rotating fixing buckle is movably connected to the upper surface of the composite handle, two composite handles are provided, an adjustment spring structure is provided on the surface of one end of the composite handle, a scissor blade is fixedly connected to the surface of one side of the composite handle, and a scissor seat is fixedly connected to the surface of the other side of the composite handle, and a positioning axis is provided at the intersection of the scissor blade and the scissor seat.

[0009] Furthermore, a positioning pin is provided on the surface of another composite handle at the same position as the rotating fixing buckle, a limiting shaft is provided between the two composite handles, the two composite handles are movably connected via the limiting shaft, and the adjusting spring structure is provided between the two composite handles.

[0010] Furthermore, the composite grip includes an inner concave handle, an inner surface of the inner concave handle is provided with an engaging groove, an extension rod is engaged and connected to the surface of the engaging groove, a sleeve ring is fixedly connected to one end surface of the inner concave handle, a snap-on spring sheet is provided on the inner wall of the sleeve ring, and a snap-on groove is provided on one end surface of the extension rod.

[0011] Furthermore, the extension rod is fixed inside the inner concave handle through an engaging groove. When working, the extension rod is sleeved and connected inside the sleeve ring through the clamping groove on its surface, and the extension rod is fixed to the surface of the sleeve ring through the clamping spring sheet.

[0012] Furthermore, the adjustment spring structure includes a hollow groove arranged inside the inner concave handle, the outer surface of the hollow groove is threadedly connected with an adjustment screw, the inner surface of the hollow groove is movably connected with a spring support block, the surface of the spring support block is provided with a spring embedding groove, and the surface of the spring embedding groove is sleeved with a return spring.

[0013] Furthermore, the adjusting screw and the spring support block are arranged on the surfaces of the two composite handles, the two composite handles form an elastic structure through a reset spring, and the spring support block performs a supporting operation in the empty groove through the adjusting screw.

[0014] 3. Beneficial effects:

[0015] The utility model has a reasonable design. When the pruning shears are used normally, the two composite handles drive the scissor blades and the scissor seat to cut branches. When the branches are thick, the extension rod inside the inner concave handle is taken out, and the extension rod is sleeved and connected to the sleeve ring surface at the tail end of the inner concave handle through the clamping groove at one end of the extension rod. At the same time, the extension rod is fixed to the sleeve ring surface through the clamping spring sheet, and the purpose of labor saving is achieved by extending the force point during cutting.

[0016] After use, the two composite grips are closed and collected by rotating the fixing buckle to buckle with the positioning pin on the surface of the other composite grip, and at the same time, the adjusting screw is rotated to release the support for the spring support block, so that the spring support block can retract into the empty groove under the action of the reset spring, so that the reset spring does not stay in a compressed state for a long time, thereby increasing the service life of the reset spring. When in use, the spring support block is supported again to ensure the normal operation of the reset spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the composite grip of the utility model;

[0019] Figure 3 This is a schematic diagram of the extension rod structure of the utility model;

[0020] Figure 4 It is a schematic diagram of the adjusting spring structure of the utility model.

[0021] Reference numerals:

[0022] 1. Composite grip; 101. Inner concave handle; 102. Fitting groove; 103. Extension rod; 104. Sleeve ring; 105. Snap-on spring; 106. Snap-on groove; 2. Rotating fixing buckle; 3. Adjusting spring structure; 301. Empty groove; 302. Adjusting screw; 303. Spring support block; 304. Spring fitting groove; 305. Reset spring; 4. Scissor blade; 5. Scissor seat; 6. Positioning shaft. DETAILED DESCRIPTION

[0023] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "page", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0026] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", "provided with", etc. 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example

[0027] See attached Figure 1-4 , including a composite handle 1, a rotating fixed buckle 2 is movably connected to the upper surface of the composite handle 1, two composite handles 1 are provided, an adjusting spring structure 3 is provided on the surface of one end of the composite handle 1, a scissor blade 4 is fixedly connected to the surface of one side of the composite handle 1, a scissor seat 5 is fixedly connected to the surface of one side of the other composite handle 1, a positioning shaft 6 is provided at the intersection of the scissor blade 4 and the scissor blade 5, a positioning pin is provided at the same position of the rotating fixed buckle 2 on the surface of the other composite handle 1, a limiting shaft is provided between the two composite handles 1, the two composite handles 1 are movably connected through the limiting shaft, and the adjusting spring structure 3 is provided between the two composite handles 1. The device prevents the spring from being in a working compression state for a long time by adjusting the spring structure 3, thereby improving the service life, and achieving the purpose of saving effort through the composite handle 1.

[0028] The composite grip 1 includes an inner concave handle 101, an inner side surface of the inner concave handle 101 is provided with an engaging groove 102, an extension rod 103 is engaged and connected to the surface of the engaging groove 102, a sleeve ring 104 is fixedly connected to one end surface of the inner concave handle 101, an inner wall of the sleeve ring 104 is provided with a snap-on spring piece 105, and one end surface of the extension rod 103 is provided with a snap-on groove 106, the extension rod 103 is fixed to the inside of the inner concave handle 101 through the engaging groove 102, and when working, the extension rod 103 is sleeved and connected to the inside of the sleeve ring 104 through the snap-on spring piece 105, and the extension rod 103 is fixed to the surface of the sleeve ring 104.

[0029] In this embodiment, when the pruning shears are in normal use, the two composite handles 1 drive the scissor blades 4 and the scissor seat 5 to perform a pruning operation on branches. When the branches are thicker, the extension rod 103 inside the inner concave handle 101 is taken out, and the extension rod 103 is sleeved and connected to the surface of the sleeve ring 104 at the rear end of the inner concave handle 101 through the clamping groove 106 at one end of the extension rod 103. At the same time, the extension rod 103 is fixed to the surface of the sleeve ring 104 through the clamping spring piece 105. By extending the force point during cutting, the purpose of saving effort is achieved.

[0030] The adjusting spring structure 3 includes a hollow groove 301 arranged inside the inner concave handle 101, the outer surface of the hollow groove 301 is threadedly connected with an adjusting screw 302, the inner surface of the hollow groove 301 is movably connected with a spring support block 303, the surface of the spring support block 303 is provided with a spring embedding groove 304, and the surface of the spring embedding groove 304 is sleeved with a return spring 305. The adjusting screw 302 and the spring support block 303 are arranged on the surfaces of the two composite handles 1, and the two composite handles 1 form an elastic structure through the return spring 305, and the spring support block 303 performs a supporting operation in the hollow groove 301 through the adjusting screw 302.

[0031] In this embodiment, after use, the two composite handles 1 are folded and collected by rotating the fixing buckle 2 to engage with the positioning pin on the surface of the other composite handle 1, and at the same time, the adjusting screw 302 is rotated to release the support for the spring support block 303, so that the spring support block 303 is retracted into the empty groove 301 under the action of the reset spring 305, so that the reset spring 305 is not in a long-term compression state, thereby improving the service life of the reset spring 305. When in use, the spring support block 303 is supported again to allow the reset spring 305 to work normally.

[0032] The above-described embodiments only express a certain implementation method of the utility model, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the patent of the utility model shall be based on the attached claims.

Claims

1. A type of pruning shears, Features : comprising a composite handle (1), the upper surface of the composite handle (1) being movably connected with a rotating fixing buckle (2), the composite handle (1) being provided with two, the surface of one end of the composite handle (1) being provided with an adjusting spring structure (3), the surface of one side of the composite handle (1) being fixedly connected with a scissor blade (4), the surface of the other side of the composite handle (1) being fixedly connected with a scissor seat (5), the intersection of the scissor blade (4) and the scissor seat (5) being provided with a positioning shaft (6), The adjustment spring structure (3) comprises a hollow groove (301) arranged inside the inner concave handle (101); an adjustment screw (302) is threadedly connected to the outer surface of the hollow groove (301); a spring support block (303) is movably connected to the inner surface of the hollow groove (301); a spring embedding groove (304) is arranged on the surface of the spring embedding groove (304); and a return spring (305) is sleeved and connected to the surface of the spring embedding groove (304).

2. A pruning shear according to claim 1, Features: A positioning pin is provided on the surface of another composite handle (1) at the same position as the rotating fixing buckle (2), a limiting shaft is provided between the two composite handles (1), the two composite handles (1) are movably connected via the limiting shaft, and the adjusting spring structure (3) is provided between the two composite handles (1).

3. A pruning shear according to claim 1, Features: The composite grip (1) comprises an inner concave handle (101), the inner side surface of the inner concave handle (101) is provided with an engaging groove (102), the surface of the engaging groove (102) is engaged with an extension rod (103), one end surface of the inner concave handle (101) is fixedly connected with a sleeve ring (104), the inner wall of the sleeve ring (104) is provided with a snap-on spring sheet (105), and one end surface of the extension rod (103) is provided with a snap-on groove (106).

4. A pruning shear according to claim 3, Features: The extension rod (103) is fixed inside the inner recessed handle (101) via the engaging groove (102); when in operation, the extension rod (103) is sleeved and connected inside the sleeve ring (104) via the clamping groove (106) on its surface; the extension rod (103) is fixed to the surface of the sleeve ring (104) via the clamping spring sheet (105).

5. A pruning shear according to claim 1, Features: The adjusting screw (302) and the spring support block (303) are both arranged on the surfaces of the two composite handles (1); the two composite handles (1) form an elastic structure via a return spring (305); and the spring support block (303) performs a supporting operation in the empty groove (301) via the adjusting screw (302).

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