DE202018104407U1 - Lopper - Google Patents

Abstract

Pruning shears, comprising
a cutting element holder (10), to the underside of which an extension rod (11) is connected, the extension rod (11) providing an extension allowing the user to cut off branches standing high up on the ground, in the middle of Cutting element holder (10) is formed a continuous first axle journal hole (11), wherein on one side of the cutting element holder (10) is formed a lower opening through which a gap (102) is formed, whose upper end is closed, wherein an anvil (12) on the closed upper edge of the intermediate space (102) and is connected to the same, wherein on the other side of the cutting element holder (10) a rounded projection (104) is arranged, wherein the rounded projection (104) with its upper side to a first indentation ( 105) and with its underside adjacent to a second indentation (106), wherein above the first indentation (105) at the upper end the cutting element holder (10) is formed a first spring bore (107) which serves for hooking a foot of a spring (40);
- A cutting blade (20) on which a blade (21), a second Achszapfenloch (22) and a third Achszapfenloch (23) are arranged, wherein the second and the third Achszapfenloch (22, 23) pass through the cutting blade (20), the cutting blade (20) abutting the surface of one side of the cutting element holder (10), wherein a first journal member (60) is driven simultaneously through the first and second spindle holes (101, 22 is inserted so that the cutting blade (20) is rotatably mounted on the cutting element holder (10), wherein the cutting blade (20) with the blade (21) through this rotatable mounting with respect to the gap (102) of the cutting element holder 10 to the inside or to can be swung outside, whereby the pruning shears can be opened or closed when cutting branches;
- A rotary arm (30) on which a fourth Achszapfenloch (301) and a second spring bore (302) are arranged, which pass through the rotary arm (30), wherein at one end of the rotary arm (30) an arcuate recess (303) arranged is formed, on whose two sides in each case a first projection (304) and a second projection (305) are formed, wherein the rotary arm (30) is mounted so that the first projection (304) with the first indentation (105) and the second Protrusion (305) mates with the second indentation (106) such that the rounded protrusion (104) of the cutting element holder (10) is received in the arcuate recess (303), with a second trunnion element (600) concurrently through the fourth and third spindle holes (301, 23) is pushed through, whereby the rotary arm (30) is rotatably supported by the second journal element (600) on the cutting blade (20), further comprising a continuous second spring bore (302) on the pivot arm (30), the second spring bore (302) for hooking the other leg of the spring (40), to the other end of the pivot arm (30) being a pull cable (31 ) connected;
a spring (40); and
- A closure (50) on which a fifth journal hole (51) and a sixth journal hole (52) are arranged, which are each near the two ends of the closure (50) and through the closure (50) pass, the closure (50) abuts the surface of the cutting blade holder (10) other than the cutting blade (20), this arrangement allowing the first pivot member (60) to fit into the fifth pivot hole (51) and the second pivot member (600) in FIG inserting the sixth journal hole (52) to rotatably support the closure (50) between the cutting element holder (10) and the pivot arm (30), the closure (50) cooperating with the restriction of the blade (20); the rotary arm (30) is securely and stably positioned between the cutting blade (20) and the shutter (50).

Description

Technical area

The invention relates to a pruning shears, in particular a pruning shears, with which a person standing on the ground can cut off branches located high above.

State of the art

8th 1 shows a conventional lopper 70 having an extension rod 71 at one end of which a blade holder 72 is mounted with a through bore 721 formed in the center of the blade holder 72 with a curved hook portion 722 extending from a side edge of the blade holder 72. A journal is inserted through the bore 721, thereby allowing a cutting element 73 to be rotatably mounted on the surface of one side of the blade holder 72. Between the blade holder 72 and the cutting element 73, a return spring 74 is attached. From the top of the cutting element 73 extends a power arm 731 which is connected to a pull rope 75, wherein the user can pull the pull rope 75 via a pulley 76. Under the action of the spring force of the return spring 74, the pull cable 74 is retracted after a cutting operation carried out by means of the cutting element 73.

In this way, a user standing on the ground can also cut branches located high up.

The above-described conventional pruning shears 70, however, still has some disadvantages. For example, while it is possible with this that the user stands on the ground and with the pruning shears 70 high branches located cuts off, however, the opening width of the conventional pruning shears 70 is limited, so that the pruning shears 70 is not suitable for cutting thicker branches. In addition, in the conventional pruning shears 70, it is not possible to increase the cutting force by increasing the opening width of the cutting element 73, so that the operation of the conventional pruning shears 70 requires a great deal of effort and thicker branches can not be easily cut off.

Object of the invention

The invention is therefore based on the object to provide a pruning shears with which the deficiencies mentioned for the prior art can be eliminated.

Technical solution

This object is achieved by a lopper with the features of claim 1. Advantageous embodiments are the subject of the dependent claims.

In order to achieve the above object, a lopper is provided according to the invention, which comprises a cutting element holder, a cutting blade, a rotating arm, a spring and a closure. An extension rod is also connected to the lower side of the cutting element holder, wherein the extension provided by the extension rod allows the user to cut branches also standing high on the ground. Furthermore, in the center of the cutting element holder, a continuous first Achszapfenloch is formed, wherein on one side of the Schneidelementhalters a lower opening is arranged through which a gap is formed, the upper end is closed, with an anvil abuts the closed upper edge of the gap and with is connected to the same, wherein on the other side of the Schneidelementhalters a rounded projection is formed, wherein the rounded projection with its upper side adjacent to a first indentation and with its underside to a second indentation, wherein above the first indentation, namely at the upper end of the Cutting element holder, a first spring bore is formed, in which a foot of the spring is hooked. Disposed on the blade are a blade, a second axle pin hole, and a third axle pin hole, the second and third spindle holes passing through the blade, the blade abutting the surface of one side of the blade holder, a first journal member simultaneously through the first and the second Achszapfenloch is pushed through, that the cutting blade is rotatably mounted on the cutting element holder, whereby the cutting blade with the blade aligned with the blade on the space of the cutting element holder can be pivoted or swung by this rotatable mounting, whereby the lopper for opening branches to open or closed can be. On the rotary arm, a fourth journal hole and a second spring bore are further formed, passing through the rotary arm, wherein at one end of the rotary arm, an arcuate recess is provided, on whose two sides in each case a first projection and a second projection are formed, wherein the rotary arm so is attached, that the first projection with the first indentation and the second projection mates with the second indentation, so that the rounded projection of the cutting element holder is received in the arcuate recess, further comprising a second journal element simultaneously through the fourth and the third pivot hole is pushed through, wherein the rotary arm is rotatably supported by the insertion of the second axle member through the fourth and third Achszapfenloch the cutting blade, further comprising a continuous second spring bore is formed on the rotary arm, wherein the other foot of the spring hooked in the second spring bore can be, with a pull rope is connected to the other end of the rotary arm. On the closure, a fifth journal hole and a sixth journal hole are formed, which are respectively close to the two ends of the shutter and pass through the shutter, the shutter abutting the surface of the cutting blade holder side different from the blade, thereby enabling this arrangement in that the first journal member is inserted into the fifth journal hole and the second journal member is inserted into the sixth journal hole to rotatably support the shutter between the cutting element holder and the rotary arm, the shutter, in cooperation with the restriction of the blade, causing the shutter to rotate Rotary arm is securely and stably positioned between the cutting blade and the closure. Thus, a pruner according to the invention is realized.

list of figures

• 1 shows a perspective view of a pruner according to the invention in the assembled state,
• 2 shows an exploded view of a lopper according to the invention,
• 3 shows a planar view of a pruner according to the invention in the assembled state,
• 4 shows a planar view of a pruner according to the invention in the assembled state from another angle,
• 5 shows a schematic representation of a pruner according to the invention, which has been actuated to the extent that a cutting process carried out with it is half completed,
• 6 shows a schematic representation of the loppers according to the invention 5 which has been actuated to such an extent that half of a cutting process carried out with it has been completed, viewed from a different angle,
• 7 shows a schematic representation of a pruner according to the invention, which has been operated so far that a cutting process carried out with it is completed, and
• 8th shows a perspective view of the structure of a conventional pruning shears.

Detailed description of a preferred embodiment of the invention

In the following, objects, features and advantages of the present invention will become apparent from the detailed description of an embodiment with reference to the accompanying drawings. However, the invention should not be limited to the embodiment shown in the description and the accompanying drawings.

How out 1 to 4 it can be seen, the pruner according to the invention comprises a cutting element holder 10 , a cutting sheet 20 , a rotary arm 30 , a feather 40 and a closure 50 , With a lower side of the cutting element holder 10 an extension rod 11 is connected, being the extension by the extension rod 11 allows the user, standing on the ground cut off even high-up branches. In the middle of the cutting element holder 10 is a continuous first axle hole 11 provided, wherein on one side of the cutting element holder 10 a lower opening is formed through which a gap 102 arises, the upper end is closed, with an anvil 12 abuts the closed upper edge of the gap 102 and is connected to the same, wherein on the other side of the cutting element holder 10 a rounded lead 104 is arranged, wherein the rounded projection 104 with its top to a first indentation 105 and with its bottom to a second indentation 106 adjacent, being above the first indentation 105 at the upper end of the cutting element holder 10 a first spring bore 107 is formed, in which a foot of the spring 40 is hooked. On the cutting blade 20 are a blade 21 , a second axle hole 22 and a third axle hole 23 arranged, wherein the second and the third axle hole 22 . 23 through the cutting blade 20 go through, with the cutting blade 20 on the surface of one side of the cutting element holder 10 is applied, wherein a first axle journal element 60 at the same time through the first and the second axle hole 101 . 22 is plugged through that the cutting blade 20 rotatable on the cutting element holder 10 is stored, with the cutting blade 20 with the blade 21 by this rotatable mounting with respect to the gap 102 the cutting element holder 10 can be pivoted inwardly or outwardly, whereby the lopper for cutting branches can be opened or closed. At the swivel arm 30 are a fourth axle hole 301 and a second spring bore 302 arranged by the rotary arm 30 go through, being at one end of the rotary arm 30 an arcuate recess 303 is provided, on whose two sides in each case a first projection 304 and a second lead 305 are formed, wherein the swivel arm 30 is attached so that the first projection 304 with the first indentation 105 and the second projection 305 with the second indentation 106 Fits together, so that the rounded projection 104 of the cutting element holder 10 in the arched recess 303 is recorded. In addition, a second axle journal element 600 at the same time through the fourth and the third axle hole 301 . 23 pushed through, whereby the rotary arm 30 through the second journal element 600 is rotatably mounted on the cutting blade 20, further comprising a continuous second spring bore 302 on the rotary arm 30 is arranged, wherein the other foot of the spring 40 in the second spring bore 302 is hooked, taking to the other end of the rotary arm 30 a pull rope 31 connected. At the shutter 50 are a fifth axle journal hole 51 and a sixth journal hole 52 disposed respectively near the two ends of the shutter 50 and through the lock 50 go through, with the shutter 50 on the surface of the side of the cutting element holder which is different from the cutting blade 20 10 is applied, this arrangement allows the first axle member 60 in the fifth Achszapfenloch 51 and the second journal member 600 into the sixth journal hole 52 is plugged in to the closure 50 rotatable between the cutting element holder 10 and the rotary arm 30 store, with the shutter 50 in cooperation with the limitation of the cutting blade 20 ensures that the rotary arm 30 safe and stable between the cutting blade 20 and the closure 50 is positioned.

According to the invention, the traction cable 31 about a pulley 32 connected.

According to the invention, it is the spring 40 around a tension spring.

According to the invention, the first axle journal element is involved 60 an assembly of a bolt and a nut which cooperate with each other.

In the non-use state, ie in the normal state, the pruner becomes the rotary arm 30 by the spring force of the spring 40 so withdrawn that he with the second journal element 600 as axis the cutting blade 20 pivoted so that the lopper is opened. When the rotary arm 30 is pulled continuously and is brought up to rotate so that the first projection 304 in the first indentation 105 snaps into place, thereby allowing the cutting blade 20 is brought to move again, whereby the opening angle of the cutting blade 20 is enlarged accordingly, as in 1 . 3 and 4 is shown. Thus, thicker items to be cut off, eg branches and leaves, can move freely into the gap 102 of the cutting element holder 10 be plugged in. The rope is used for cutting 31 pulled down, causing the rotary arm 30 is brought to itself with the arcuate recess 303 along the rounded projection 104 to turn down (see 5 and 6 ), where now the second projection 305 on the swivel arm 30 in the second recess 106 snaps into place, leaving the cutting blade 20 with the blade 21 in the direction of the gap 102 of the cutting element 10 , ie inward, is pivoted to the space in the gap 102 cut through the inserted object to be cut (see Fig. 7). In that the turning path, along which the turning arm 30 When the cutting blade 20 is moved from a fully open position to a closed position, is effectively elongated, the force for cutting is increased, thus ensuring a wider application of the lopper of the invention.

With the pruning shears according to the invention, it is possible to cut through thicker branches and leaves (or sheets and the like), whereby the force provided for cutting is increased, so that a time- and effort-saving handling and a wider application of pruning shears are possible. Furthermore, it is advantageous that the rotation of the rotary arm 30 thanks to the closure 50 can be made more stable, with the closure 50 also can be avoided that the rotary arm 30 with an oversized cutting force wobbles or shifts extremely.

Although the present invention has been described in detail with reference to the embodiments, it will be understood by those skilled in the art that the invention is not limited to these embodiments, but rather modifications are possible in such a way that individual features are omitted or other types of combinations of features realized without thereby leaving the scope of the appended claims. The disclosure of the present invention includes all combinations of the featured individual features.

LIST OF REFERENCE NUMBERS

10

Cutter holder

101

first axle hole

102

gap

103

upper edge

104

rounded projection

105

first indentation

106

second indentation

107

first spring bore

11

extension rod

12

anvil

20

cutting blade

21

blade

22

second axle hole

23

third axle hole

30

rotating arm

301

fourth axle hole

302

second spring bore

303

arcuate recess

304

first advantage

305

second lead

31

rope

32

pulley

40

feather

50

shutter

51

fifth axle hole

52

sixth axle hole

60

first journal element

600

second journal element

Claims (4)

Pruning shears, comprising a cutting element holder (10), to the underside of which an extension rod (11) is connected, the extension rod (11) providing an extension allowing the user to cut off branches standing high up on the ground, in the middle of Cutting element holder (10) is formed a continuous first axle journal hole (11), wherein on one side of the cutting element holder (10) is formed a lower opening through which a gap (102) is formed, whose upper end is closed, wherein an anvil (12) on the closed upper edge of the intermediate space (102) and is connected to the same, wherein on the other side of the cutting element holder (10) a rounded projection (104) is arranged, wherein the rounded projection (104) with its upper side to a first indentation ( 105) and with its underside adjacent to a second indentation (106), wherein above the first indentation (105) at the upper end the cutting element holder (10) is formed a first spring bore (107) which serves for hooking a foot of a spring (40); - A cutting blade (20) on which a blade (21), a second journal hole (22) and a third journal hole (23) are arranged, wherein the second and the third journal hole (22, 23) through the cutting blade (20) pass wherein the cutting blade (20) abuts the surface of one side of the cutting element holder (10), wherein a first journal member (60) is simultaneously inserted through the first and second journal holes (101, 22) such that the cutting blade (20) rotatably engages Cutting element holder (10) is mounted, wherein the cutting blade (20) with the blade (21) by this rotatable mounting with respect to the gap (102) of the cutting element holder 10 can be pivoted inwardly or outwardly, whereby the lopper when cutting branches can be opened or closed; - A rotary arm (30) on which a fourth Achszapfenloch (301) and a second spring bore (302) are arranged, which pass through the rotary arm (30), wherein at one end of the rotary arm (30) an arcuate recess (303) arranged is formed, on whose two sides in each case a first projection (304) and a second projection (305) are formed, wherein the rotary arm (30) is mounted so that the first projection (304) with the first indentation (105) and the second Protrusion (305) mates with the second indentation (106) such that the rounded protrusion (104) of the cutting element holder (10) is received in the arcuate recess (303), with a second trunnion element (600) concurrently through the fourth and third spindle holes (301, 23) is pushed through, whereby the rotary arm (30) is rotatably supported by the second journal member (600) on the cutting blade (20), further wherein a continuous second spring bore (302) on the rotary arm (30) is arranged the second spring bore (302) for hooking the other foot of the spring (40) is used, wherein at the other end of the rotary arm (30) a pull rope (31) is connected; a spring (40); and - A closure (50) on which a fifth journal hole (51) and a sixth journal hole (52) are arranged, which are each near the two ends of the closure (50) and through the closure (50) pass, the closure (50) abuts the surface of the cutting blade holder (10) other than the cutting blade (20), this arrangement allowing the first pivot member (60) to fit into the fifth pivot hole (51) and the second pivot member (600) in FIG inserting the sixth journal hole (52) to rotatably support the closure (50) between the cutting element holder (10) and the pivot arm (30), the closure (50) cooperating with the restriction of the blade (20); the rotary arm (30) is securely and stably positioned between the cutting blade (20) and the shutter (50). Pruning shears after Claim 1 , characterized in that it is the spring (40) is a tension spring. Pruning shears after Claim 1 characterized in that the first journal member (60) is an assembly of a bolt and a nut cooperating with each other. Pruning shears after Claim 1 characterized in that the second journal member (600) is an assembly of a bolt and a nut cooperating with each other.

Images