CN219961422U - Pruning shears - Google Patents

Abstract

The utility model discloses pruning shears, which belong to the field of garden machinery and solve the problem of sliding friction between blades of the existing pruning shears. The utility model is mainly used for realizing rolling friction between blades, reducing friction noise and heat and effectively guaranteeing the service life of the blades.

Description

Pruning shears

Technical Field

The utility model relates to garden machinery, in particular to pruning shears.

Background

Pruning shear is a garden instrument commonly used, mainly used fence, the pruning of short bush, the blade subassembly is its important part, the main cutting function has been undertaken, friction between the traditional blade subassembly is sliding friction, can produce great mechanical noise at the during operation of machine, reduce user's use experience, the energy that the motor produced is partly consumed by the friction of blade subassembly simultaneously, the reduction of energy utilization has been caused, and the clearance between the traditional blade is difficult for controlling and is led to sliding friction's production more easily, lead to the life of blade to shorten, of course, also have among the prior art to change the inclination of blade and make there is a clearance between two blades, be equipped with a bush that is higher than two blades between two blades, the scheme that two blades were also locked when preventing the screw locking, but this scheme control blade's clearance error is great, and blade length overlength is overlength, often still there is sliding friction between two blades. Therefore, it is desirable to provide a structure that can effectively control the blade gap and reduce the frictional noise and heat.

Disclosure of Invention

The utility model aims to provide the pruning shears, solve the problem of sliding friction between blades of the existing pruning shears, realize rolling friction between the blades, reduce friction noise and heat and effectively ensure the service life of the blades.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the pruning shears comprise a gear, an eccentric wheel assembly, an upper pressing strip, a lower pressing strip, an upper blade and a lower blade, wherein the upper blade and the lower blade are movably arranged between the upper pressing strip and the lower pressing strip, a first movable gap is arranged between the upper blade and the lower blade, and a first rolling piece for separating the upper blade and the lower blade is arranged in the first movable gap so as to enable the upper blade and the lower blade to realize rolling friction.

After the technical scheme is adopted, the utility model has the following advantages: firstly, be equipped with first clearance between upper blade and the lower blade, separate upper blade and lower blade and set up, effectively avoid upper blade and lower blade contact, secondly, be equipped with the first rolling element that separates upper blade and lower blade in the clearance of first clearance, so that upper blade and lower blade realize rolling friction, very big reduction upper blade and lower blade noise, vibrations and upper blade and lower blade friction heat that produce when pruning shear operation, improved the utilization to pruning shear's energy, also effectually reduced upper blade and lower blade because the wearing and tearing of reciprocal motion, ensure the life of blade.

Further, the upper blade and/or the lower blade are/is provided with a first accommodating groove for accommodating the first rolling element, and the first rolling element is arranged in the first accommodating groove and protrudes out of the notch of the first accommodating groove, so that a first movable gap is formed between the upper blade and the lower blade. By adopting the technical scheme, the first rolling element is arranged in the first accommodating groove at different positions, the structure is simple, the practical range is wide, and the upper blade and the lower blade are effectively separated by the notch of the first accommodating groove protruding from the first rolling element.

Further, the first movable gap is D1, O.1mm is less than or equal to D1 and less than or equal to 0.6mm. Through above-mentioned technical scheme, rationally set up first clearance, when realizing that upper blade and lower blade separate, also ensure upper blade and lower blade pruning effect, if first clearance D1 is < 0.1mm, then upper blade and lower blade contact easily, take place wearing and tearing easily, if first clearance D1 > 0.6mm, then the clearance between upper blade and the lower blade is too big, leads to the incision of pruning great, influences pruning effect.

Further, the first rolling element is a sphere or a cylinder. Through the technical scheme, the structure is simple, the manufacturing is convenient, and the manufacturing cost is reduced.

Further, a second movable gap is arranged between the upper blade and the upper pressing strip, and a second rolling piece of the upper blade and the upper pressing strip is arranged in the second movable gap, so that rolling friction is realized between the upper blade and the upper pressing strip. By adopting the technical scheme, firstly, the second movable gap is arranged between the upper blade and the upper pressing strip, the upper blade and the upper pressing strip are arranged in a spaced manner, the upper blade and the upper pressing strip are effectively prevented from being contacted, secondly, the second rolling piece which separates the upper blade and the upper pressing strip is arranged in the second movable gap, so that rolling friction is realized between the upper blade and the upper pressing strip, noise and vibration generated by the upper blade and the upper pressing strip during pruning shear operation and heat generated by friction between the upper blade and the upper pressing strip are greatly reduced, energy utilization of the pruning shear is improved, abrasion of the upper blade and the upper pressing strip due to mutual movement is also effectively reduced, and service lives of the upper blade and the upper pressing strip are guaranteed. Further, the upper blade and/or the upper pressing strip are/is provided with a second accommodating groove for accommodating a second rolling element, and the second rolling element is arranged in the second accommodating groove and protrudes out of the notch of the second accommodating groove, so that a second movable gap is formed between the upper blade and the upper pressing strip. Through above-mentioned technical scheme, adopt aforementioned technical scheme, realize that the second holding tank is seted up to different positions and second rolling element is installed, simple structure, the practical range is wide to and, through the notch of second rolling element protrusion in the second holding tank, effectively separate blade and last layering.

Further, the third rolling element is a sphere or a cylinder. Through the technical scheme, the structure is simple, the manufacturing is convenient, and the manufacturing cost is reduced.

Further, a third movable gap is arranged between the lower blade and the lower pressing strip, and a third rolling piece of the lower blade and the lower pressing strip is arranged in the third movable gap, so that rolling friction is realized between the lower blade and the lower pressing strip. By adopting the technical scheme, firstly, the third movable gap is arranged between the lower blade and the lower pressing strip, the lower blade and the lower pressing strip are arranged in a spaced manner, the lower blade and the lower pressing strip are effectively prevented from being contacted, secondly, the third rolling piece for separating the lower blade and the lower pressing strip is arranged in the third movable gap, so that rolling friction is realized between the lower blade and the lower pressing strip, noise and vibration generated by the lower blade and the lower pressing strip during pruning shear operation and heat generated by friction between the lower blade and the lower pressing strip are greatly reduced, energy utilization of the pruning shear is improved, abrasion of the lower blade and the lower pressing strip due to mutual movement is also effectively reduced, and service lives of the lower blade and the lower pressing strip are guaranteed.

Further, the lower blade and/or the lower pressing strip are/is provided with a third accommodating groove for accommodating a third rolling element, and the third rolling element is arranged in the third accommodating groove and protrudes out of the notch of the third accommodating groove, so that a third movable gap is formed between the lower blade and the lower pressing strip. By adopting the technical scheme, the third rolling element is arranged in the third accommodating groove at different positions, the structure is simple, the practical range is wide, and the lower blade and the lower pressing strip are effectively separated by the notch of the third accommodating groove protruding from the third rolling element.

Further, the third rolling element is a sphere or a cylinder. Through the technical scheme, the structure is simple, the manufacturing is convenient, and the manufacturing cost is reduced.

Drawings

The utility model is further described below with reference to the accompanying drawings:

FIG. 1 is a schematic view of a pruning shear according to the present utility model;

FIG. 2 is an enlarged view of the structure at A in FIG. 1;

FIG. 3 is an exploded view of the pruning shears according to the present utility model;

FIG. 4 is a schematic view of a part of the pruning shears according to the present utility model;

in the figure, 1, an upper blade; 11. a long hole; 12. a first movable gap; 2. a lower blade; 21. a first accommodation groove; 3. an upper pressing bar; 31. a second accommodation groove; 32. a second movable gap; 4. a lower pressing bar; 41. a third accommodation groove; 42. a third movable gap; 5. a first rolling member; 6. a second rolling member; 7. a second rolling member; 8. a bolt; 9. blade protector.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments.

The terms "first," "second," "third," "fourth" and the like in the description and in the claims and in the above drawings, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein.

It should be understood that, in various embodiments of the present utility model, the size of the sequence numbers of each process is not meant to indicate the order of execution, and the order of execution of each process should be determined by its functions and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present utility model.

It should be understood that in the present utility model, "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements that are expressly listed or inherent to such process, method, article, or apparatus.

It should be understood that in the present utility model, "plurality" means two or more. "and/or" is merely an association relationship describing an association object, meaning that three relationships may exist, for example, X and/or Y may represent: x alone, X and Y together, and Y alone. The character "/" generally indicates that the context-dependent object is an "or" relationship. "comprising X, Y and Z", "comprising X, Y, Z" means that all three of X, Y, Z comprise, "comprising X, Y or Z" means that one of the three comprises X, Y, Z, and "comprising X, Y and/or Z" means that any one or any two or three of the three comprise X, Y, Z.

The technical scheme of the utility model is described in detail below by specific examples. The following specific embodiments may be combined with or replaced with each other according to actual situations, and the same or similar concepts or processes may not be described in detail in some embodiments.

As shown in fig. 1 to 4, the present utility model provides a pruning shear, comprising a gear, an eccentric wheel assembly, an upper pressing bar 3, a lower pressing bar 4, an upper blade 1 and a lower blade 2, wherein the upper blade 1 and the lower blade 2 are movably arranged between the upper pressing bar 3 and the lower pressing bar 4, a first movable gap 12 is arranged between the upper blade 1 and the lower blade 2, and a first rolling member 5 for separating the upper blade 1 and the lower blade 2 is arranged in the first movable gap 12 so as to realize rolling friction between the upper blade 1 and the lower blade 2.

Firstly, be equipped with first clearance 12 between upper blade 1 and the lower blade 2, with upper blade 1 and the lower blade 2 separate the setting, effectively avoid upper blade 1 and lower blade 2 contact, secondly, be equipped with the first rolling member 5 that separates upper blade 1 and lower blade 2 in the clearance 12 of first activity, so that upper blade 1 and lower blade 2 realize rolling friction, the very big noise that upper blade 1 and lower blade 2 produced when pruning shear operation, vibrations and upper blade 1 and lower blade 2 friction heat that produce, improved the utilization to pruning shear's energy, also effectually reduced upper blade 1 and lower blade 2 because the wearing and tearing of mutual motion, ensure the life of blade.

It should be noted that, the upper pressing bar 3 and the lower pressing bar 4 are provided with a plurality of bolts 8 for fixing the upper blade 1 and the lower blade 2, and each bolt 8 penetrates through a corresponding long hole 11 on the upper blade 1 and the lower blade 2.

The upper trim strip 3 and the lower trim strip 4 are connected with a blade protector 9 by bolts 8.

The gear and eccentric wheel assembly is in transmission connection with the upper blade and the lower blade.

To facilitate the mounting of the first rolling member 5, in one embodiment, the upper blade 1 is provided with a first receiving groove 21 for receiving the first rolling member 5, and the first rolling member 5 is provided in the first receiving groove 21 and protrudes from a notch of the first receiving groove 21 so that a first movable gap 12 is formed between the upper blade 1 and the lower blade 2. The first rolling member 5 is mounted while only the first accommodating groove 21 is opened in one blade, so that the number of processing steps is reduced, and the structural strength of the lower blade 2 can be ensured.

In another embodiment, the lower blade 2 is provided with a first receiving groove 21 for receiving the first rolling member 5, and the first rolling member 5 is disposed in the first receiving groove 21 and protrudes from a notch of the first receiving groove 21, so that a first movable gap 12 is formed between the upper blade 1 and the lower blade 2. The first rolling member 5 is mounted while the first accommodating groove 21 is only required to be opened in the lower blade 2, so that the number of processing steps is reduced, and the structural strength of the upper blade 1 can be ensured.

In order to ensure the trimming effect, the first movable gap 12 is D1, and O.1mm is less than or equal to D1 and less than or equal to 0.6mm. The first clearance 12 is set up rationally, when realizing that upper blade 1 and lower blade 2 separate, also ensure upper blade 1 and lower blade 2 pruning effect, if the D1 of first clearance 12 is < 0.1mm, then upper blade 1 and lower blade 2 contact easily, take place wearing and tearing easily, if the D1 of first clearance 12 > 0.6mm, then the clearance between upper blade 1 and the lower blade 2 is too big, leads to the incision of pruning great, influences pruning effect.

It is understood that D1 may be a reasonable size of 0.2mm, 0.3mm, 0.4mm, etc.

In other embodiments, the upper blade 1 and the lower blade 2 may be provided with a first accommodating groove 21 for accommodating the first rolling member 5, and the first rolling member 5 is disposed in the first accommodating groove 21 and protrudes from a notch of the first accommodating groove 21, so that a first movable gap 12 is formed between the upper blade 1 and the lower blade 2.

In order to achieve an effective separation of the upper blade 1 and the lower blade 2, the first rolling member 5 is provided with at least one, and the first receiving groove 21 is provided with at least one. Because the lengths of the upper blade 1 and the lower blade 2 are longer, a plurality of first rolling elements 5 are arranged to realize effective separation, and the stress of the upper blade 1 and the lower blade 2 can be balanced, so that the service lives of the upper blade 1 and the lower blade 2 are further ensured.

It will be appreciated that the first rolling member 5 may be provided in a reasonable number of three, four, five etc.

It will be appreciated that the first receiving groove 21 may be provided with a reasonable number of three, four, five, etc.

The first rolling member 5 may be a sphere, a cylinder, or other material members capable of forming rolling friction. Simple structure, easy manufacture, and low cost.

In order to further guarantee the service life of the upper blade 1 and the lower blade 2, a second movable gap 32 is arranged between the upper blade 1 and the upper pressing strip 3, the upper blade 1 and the upper pressing strip 3 are arranged in a spaced mode, the upper blade 1 and the upper pressing strip 3 are effectively prevented from being contacted, a second rolling piece 6 for separating the upper blade 1 and the upper pressing strip 3 is arranged in the second movable gap 32, rolling friction is achieved between the upper blade 1 and the upper pressing strip 3, noise and vibration generated when the upper blade 1 and the upper pressing strip 3 operate in pruning shears and heat generated by friction between the upper blade 1 and the upper pressing strip 3 are greatly reduced, energy utilization of pruning shears is improved, abrasion of the upper blade 1 and the upper pressing strip 3 due to mutual movement is effectively reduced, and the service life of the upper blade 1 and the upper pressing strip 3 is guaranteed.

To facilitate the mounting of the second rolling member 6, in one embodiment, the upper blade 1 is provided with a second receiving groove 31 for receiving the second rolling member 6, and the second rolling member 6 is provided in the second receiving groove 31 and protrudes from the notch of the second receiving groove 31, so that a second movable gap 32 is formed between the upper blade 1 and the upper molding 3. The second rolling member 6 is mounted, and the second accommodating groove 31 is only required to be formed in the upper blade 1, so that the processing steps are reduced, and the structural strength of the upper pressing bar 3 can be ensured.

In another embodiment, the upper trim 3 is provided with a second receiving groove 31 for receiving the second rolling member 6, and the second rolling member 6 is disposed in the second receiving groove 31 and protrudes from a notch of the second receiving groove 31, so that a second movable gap 32 is formed between the upper blade 1 and the upper trim 3. The second rolling element 6 is installed, and meanwhile, only the second accommodating groove 31 is needed to be formed on the upper pressing bar 3, so that the processing steps are reduced, and the structural strength of the upper blade 1 can be ensured.

In other embodiments, the upper blade 1 and the upper pressing bar 3 may be provided with a second accommodating groove 31 for accommodating the second rolling member 6, and the second rolling member 6 is disposed in the second accommodating groove 31 and protrudes from a notch of the second accommodating groove 31, so that a second movable gap 32 is formed between the upper blade 1 and the upper pressing bar 3.

In order to achieve an effective separation of the upper blade 1 and the upper bead 3, the second rolling element 6 is provided with at least one, and the second receiving groove 31 is provided with at least one. Because the lengths of the upper blade 1 and the upper pressing strip 3 are longer, a plurality of second rolling pieces 6 are arranged to realize effective separation, and the stress of the upper blade 1 and the upper pressing strip 3 can be balanced, so that the service lives of the upper blade 1 and the upper pressing strip 3 are further ensured.

It will be appreciated that the second rolling member 6 may be provided in a reasonable number of three, four, five etc.

It will be appreciated that the second receiving groove 31 may be provided with a reasonable number of three, four, five, etc.

The second rolling member 6 may be a sphere, a cylinder, or other material member capable of forming rolling friction. Simple structure, easy manufacture, and low cost.

And be equipped with third movable gap 42 between lower blade 2 and the lower layering 4, also separate lower blade 2 and lower layering 4 and set up, effectively avoid lower blade 2 and lower layering 4 contact, secondly, and, be equipped with the third rolling member 7 that separates lower blade 2 and lower layering 4 in the third movable gap 42, so that lower blade 2 and lower layering 4 realize rolling friction, the very big noise that lower blade 2 and lower layering 4 produced when pruning shear operation, vibrations and lower blade 2 and lower layering 4 friction heat that produce, the energy utilization to pruning shear has been improved, also effectually reduced lower blade 2 and lower layering 4 because the wearing and tearing of mutual motion, guarantee lower blade 2 and lower layering 4's life.

To facilitate the mounting of the third rolling member 7, in one embodiment, the lower blade 2 is provided with a third receiving groove 41 for receiving the third rolling member 7, and the third rolling member 7 is provided in the third receiving groove 41 and protrudes from a notch of the third receiving groove 41, so that a third movable gap 42 is formed between the lower blade 2 and the lower molding 4. The third rolling element 7 is installed, and meanwhile, only the third accommodating groove 41 is needed to be formed in the lower blade 2, so that the processing steps are reduced, and the structural strength of the lower pressing strip 4 can be ensured.

In another embodiment, the lower molding 4 is provided with a third receiving groove 41 for receiving the third rolling member 7, and the third rolling member 7 is disposed in the third receiving groove 41 and protrudes from a notch of the third receiving groove 41, so that a third movable gap 42 is formed between the lower blade 2 and the lower molding 4. The third rolling member 7 is mounted, and the third accommodating groove 41 is only required to be formed in the lower pressing bar 4, so that the processing steps are reduced, and the structural strength of the lower blade 2 can be ensured.

In other embodiments, the lower blade 2 and the lower molding 4 may be provided with a third accommodating groove 41 for accommodating the third rolling member 7, and the third rolling member 7 is disposed in the third accommodating groove 41 and protrudes from a notch of the third accommodating groove 41, so that a third movable gap 42 is formed between the lower blade 2 and the lower molding 4.

In order to achieve an effective separation of the lower blade 2 and the lower bead 4, at least one third rolling element 7 is provided and at least one third receiving groove 41 is provided. Because the lengths of the lower blade 2 and the lower pressing strip 4 are longer, a plurality of third rolling pieces 7 are arranged to realize effective separation, and the stress of the lower blade 2 and the lower pressing strip 4 can be balanced, so that the service lives of the lower blade 2 and the lower pressing strip 4 are further ensured.

It will be appreciated that the third rolling member 7 may be provided in a reasonable number of three, four, five etc.

It will be appreciated that the third receiving groove 41 may be provided in a reasonable number of three, four, five, etc.

The third rolling member 7 may be a sphere, a cylinder, or other material members capable of forming rolling friction. Simple structure, easy manufacture, and low cost.

When the rotary cutter is used, the gear and eccentric wheel assembly drives the upper blade 1 and the lower blade 2 to do reciprocating motion, and the upper blade 1 and the lower blade 2 roll relatively through the first rolling piece 5. The upper blade 1 and the upper pressing strip 3 roll relatively through the second rolling piece 6. The lower blade 2 and the lower bead 4 are relatively rolled by a third rolling member 7.

In addition to the preferred embodiments described above, other embodiments of the present utility model are also contemplated as falling within the scope of the claimed utility model, as well as all other embodiments that may be made by one of ordinary skill in the art without making any inventive effort based on the embodiments of the present utility model.

Claims (10)

1. The pruning shear comprises a gear, an eccentric wheel assembly, an upper pressing strip, a lower pressing strip, an upper blade and a lower blade, wherein the upper blade and the lower blade are movably arranged between the upper pressing strip and the lower pressing strip.

2. Pruning shears according to claim 1, wherein the upper and/or lower blades are provided with a first receiving groove for receiving the first rolling element, the first rolling element being provided in the first receiving groove and protruding from the notch of the first receiving groove so that a first movable gap is formed between the upper and lower blades.

3. Pruning shears according to claim 1 or 2, wherein the first clearance is D1, o.1mm ∈d1 ∈0.6mm.

4. The pruning shear according to claim 3, wherein said first rolling member is a sphere or cylinder.

5. The pruning shear according to claim 1, wherein a second movable gap is provided between the upper blade and the upper bead, and a second rolling member of the upper blade and the upper bead is provided in the second movable gap, so that rolling friction is achieved between the upper blade and the upper bead.

6. The pruning shears according to claim 5, wherein the upper blade and/or upper blade bar is provided with a second accommodating groove for accommodating the second rolling member, and the second rolling member is provided in the second accommodating groove and protrudes from the notch of the second accommodating groove so that a second movable gap is formed between the upper blade and the upper blade bar.

7. The pruning shear of claim 6, wherein the second rolling member is a sphere or cylinder.

8. The pruning shear according to claim 1, wherein a third movable gap is provided between the lower blade and the lower bead, and a third rolling member of the lower blade and the lower bead is provided in the third movable gap, so that rolling friction is achieved between the lower blade and the lower bead.

9. The pruning shears according to claim 8, wherein the lower blade and/or lower blade bar is provided with a third accommodating groove for accommodating a third rolling member, and the third rolling member is provided in the third accommodating groove and protrudes from a notch of the third accommodating groove so that a third movable gap is formed between the lower blade and the lower blade bar.

10. Pruning shear according to claim 9, wherein the third rolling element is a sphere or cylinder.