TW201731373A - Manually operated cutting device - Google Patents

Abstract

The underlying invention in particular is related to manually operated secateurs (1) comprising at least one cutting blade (2, 3) pivotably secured at a pivot joint (6), comprising a locking lever assembly (8) operable to restrict the available opening angle of the cutting blade (2, 3) to an intermediate opening angle ([alpha](i)) lying between the opening angles defined by the fully closed state and fully opened state of the blade (2, 3). The locking lever assembly (8) may comprise a stop pawl (13) that is attached to a manually operable slider (9) associated with a linear slide (10), to be moveable into and out of the intermediate locking position (A) by a movement in lengthwise direction of the cutting device (1).

Description

Manual operation of the cutting device

The present invention relates to a manually operated cutting device, such as a manually operated trimmer.

Trimmers are known in a variety of different configurations. In some known trimmer configurations, it is possible to adjust the maximum effective opening angle of the cutting blades, for example, allowing the user to adjust to a certain angle so that the operating mode of the trimmer conforms to the size of the hand, or to A certain angle is made to the effective opening angle to the diameter of the object that meets the cut.

For example, German Patent No. DE 10 2013 101 008 B3 describes that the trimmer can be variably adjusted at the opening angle of its cutting blade by means of a threaded connection. German Patent No. DE 1 180 273 B describes a pivoting assembly of a handlebar comprising a pruning shear on a side cheek, operable to limit the effective opening angle of the cutting blade to the intermediate opening angle, the intermediate opening angle being between the cutting blades Fully closed state to fully open state. British Patent No. GB 2 182 879 describes garden shears in which the pivoting mechanism is associated with a cam for changing the position of the stop to limit the maximum effective opening angle. German Patent No. DE 10 2005 052 970 A1 describes a similar mechanism for limiting the maximum opening angle of the connection to the scissors.

Known technical solutions still have room for further improvements, especially for simplifying the design and/or improving the hand.

In view of this, it is an object of the present invention to provide a manually operated cutting device, particularly a trimmer or a pruning shear or a garden shear, which, with the implementation of other technical solutions, allows the user to adjust the mode of operation in a friendly manner. In particular, the effective opening angle of the cutting blade is adjusted in a friendly manner, and at the same time it is a relatively simple and straightforward mechanical design.

This object is achieved according to an embodiment of the invention, in particular under the technical features of the individual items. Further embodiments and/or alternatives are derived from the dependent items and may also be derived from the description that follows.

Embodiments of the present invention provide a manually operated cutting device or cutting tool that can be implemented, for example, on a trimmer, a pruning shear, or a garden shear.

The characteristics of manual operation can be understood as, for example, by pressing together or releasing the cutting device grip associated with the cutting blade, thereby moving the cutting blades toward and away from each other according to the application action of the hand to allow the user to manually The cutting blade of the cutting device is operated to perform a cutting action on an example of a branch, a branch or the like.

In an embodiment, at least one cutting blade is disposed at a pivot joint that is pivotally secured or assembled to the cutting device. The pivot joints can be, for example, screws, bolts, rivets or the like suitable for sufficiently securing the cutting blades in close proximity to one another.

The cutting device can include a locking lever assembly operable to an intermediate locking position to limit the effective opening angle of the cutting blade to an intermediate opening angle, the intermediate opening angle being defined between the fully closed state and the fully open state of the blade These opening angles.

For example, the intermediate locking position can be represented as a particular operating or working position of the locking bar assembly, the maximum opening angle of the cutting blade being limited by the intermediate opening angle.

For example, the fully closed state may correspond to an operating condition or state of the cutting device whose cutting blades are rotated as far as possible towards each other such that no further movement towards each other is possible.

For example, the fully open state may correspond to an operating condition: pivotal movement through the pivot joint to allow the cutting blade or its cutting edge to be as far apart from each other as possible. That is, no pivoting restrictions are added to the cutting blade.

In the embodiment proposed in connection with the present invention, the locking lever assembly can include a detent, such as a stop or stop pointer, beam, tab or bracket arm, latch or latch pointer, beam, tab Or bracket arm.

The pawl can be attached to a manually operated slider that is coupled or combined with a linear slide to move in and out of the intermediate locking position by a movement in the longitudinal direction of the cutting device.

For example, the linear slide may comprise a linear slit or through opening that runs in the longitudinal direction of the cutting device, for example corresponding to a handle or grip when in a closed configuration of the cutting arrangement The longitudinal direction. The linear slide can include straight or linear sliding elements, such as grooves and/or configuration tabs, to guide linear movement of the slide along the linear slide by the user's manual operation.

Providing a cutting device with such a locking lever assembly and a pawl such that it is possible to adapt the effective opening angle of the cutting blade to a respective desired angle, for example in a relatively simple manner to conform to the user's hand size and/or The size or diameter of the object to be cut, in particular in one hand, wherein the object to be cut is for example a branch or a branch. This can result in improved operational performance. In addition, the locking bar assembly can be implemented on a simpler mechanical design.

In an embodiment, the locking bar assembly can be further implemented or configured to be operable to a locked operating state to lock the cutting blade in a closed state and to an unlocked operational state to allow the cutting blade to be fully closed Unrestricted rotation with the fully open state.

In particular, this means that the locking lever assembly is configurable for positioning: (1) in the locked operating state, the cutting device operation is blocked, for example, the cutting blade is unusable and locked in the closed state, and (2) in the intermediate locking position, the cutting blade is effective. The pivoting angle range is limited between the closed state and the intermediate opening angle, and (3) in an unlocked or unlocked operating state, it is possible and feasible for the cutting blade to be unconstrained between the closed and fully open states. .

Thus, the locking lever or slider in these embodiments provides a multi-function operating element that can be operated in a simple manner, for example by hand, such as with a single hand like a thumb.

In an embodiment, the slider may have an arched cross section, such as a slider from a unitary cylindrical dome or dome structure. The slider can be configured to be slidably coupled to an elongated arched recess, such as in such a cylindrical arched configuration or design. The arcuate recess in the embodiment can be implemented on the outer side of the operating arm, such as the handle or grip outer side of a corresponding cutting blade.

The proposed shape and cross-section, in particular the design of the cylindrical dome and the arch profile, are beneficial with respect to operational operability, slidability and stability.

In an embodiment, the slider may include a locking profile, such as an indexed profile. The index profile can be embodied, for example, as having a certain structure or configuration of grooves and/or protrusions and the like.

The index or locking profile can be implemented and configured to lock the slider at least at a first index position associated with the intermediate locking position. Here, for example, the first index position is configured as a locking lever, in particular the pawl is positioned at a position where the cutting blade or opening angle is limited by the intermediate opening angle.

For example, the index profile in embodiments may be implemented or disposed on at least one of the two lateral arms, for example, in a downward direction, the arms project from a top of the slider.

In an embodiment, the index structure may include at least one of a second index position and a third index position respectively assigned to the fully closed state and the fully open state. In this embodiment, for example, the slider can be latched or locked in the second index position, can be set and latched or locked in the second indexed position such that the cutting blades are in the closed state. In the third indexed position, the slider can be latched or locked in the aforementioned position, such that the detents are positioned so as not to interfere with the rotation of the cutting blades, i.e., the cutting blades are free to operate between a fully closed state and a fully open state.

It may be beneficial to provide separate indexing locations for the operation of the cutting device. In particular, automatic locking where the slider is located at the index position facilitates the operation and use of the cutting device. The indexing structure may, for example, comprise a protrusion and a groove-shaped arrangement, for example, the protrusion and the groove corresponding to the protrusion are provided on the slider, for example at least one of the operating arms and the arched groove are slidably received in the mounted state The lower slide.

In an embodiment, the linear guide may comprise a linear guide, for example comprising a linear protrusion, a projection or a flange, the guide seat being implementable at least on one side of the distal end of the arm or on both sides of the distal end The inside of the lateral arm. The linear guides can be embodied and designed to engage corresponding guide seats, wherein the arched grooves can be implemented. Thus, the guide track structure can provide a configuration for stably guiding the slider along and within the arcuate groove. In particular, in the embodiment, the linear guide and the corresponding linear guide are implemented as a guide and rail structure. Obviously, a linear guide is suitable for providing adequate guidance of the slider to avoid undesirable interference during operation.

In an embodiment, the locking bar may comprise at least one cantilever beam, such as a cantilever beam or protrusion. The cantilever beam faces in a direction parallel to the open face defined by the cutting blade. For example, the open surface may be a plane that is parallel to a rotating surface, wherein the rotating surface is rotationally moved by the edge of the cutting blade. For example, the cantilever beam can protrude in the direction of the pivot joint and can be moved toward or away from the pivot joint by operating the slider back and forth to engage or disengage a corresponding engagement or locking structure, for example, in combination with the cutting blade. Or lock the structure.

The cantilever beam in an embodiment may have an abutment surface at its distal free end, such as at an end other than the spaced connection point, for abutting at a medial angular rotational position of the cutting blade against a corresponding abutment surface, thereby limiting The angle of rotation of the cutting blade to the middle angle.

The abutment faces and the corresponding abutment faces can be implemented as corresponding surfaces, for example towards a direction perpendicular to the opening or rotating face of the cutting blade. For example, the surfaces may be disposed in respective abutments and corresponding abutting shoulders.

In an embodiment, the respective abutment faces or abutment shoulders are provided, for example the maximum pivot angle to the intermediate angle limit may be obtained at these abutment faces or abutment shoulders against each other to obtain an extension of the intermediate angle. This principle can also be applied to the locking function in the fully closed state, and can also be applied to multiple intermediate locking positions.

In an embodiment, the locking lever can include a locking surface as one of the at least one cantilever beam for locking engagement with a corresponding abutment surface to lock the cutting blade in a fully closed state. Thus, the locking or latching of the cutting blade in the closed state to limit the pivotal movement of the intermediate angle can be based on the same functional principle and can be used to simplify the structure of the overall cutting device.

In an embodiment, at least one of the abutting faces, the corresponding abutment face and the corresponding locking face are inclined with respect to the corresponding cantilever beam or the operating arm in a longitudinal direction to facilitate a self-locking action between the abutting faces and the corresponding corresponding abutting faces. . For example, the respective abutment faces may be inclined in such a manner only in the case of partial engagement, creating a driving force to apply or drive the corresponding engagement or locking portion or surface to full engagement.

In an embodiment, the handle or grip combined with the cutting blade can be loaded with springs, thus causing the cutting blades to be fully open.

In an embodiment, it is possible to load the spring in such a way that a corresponding spring force urges the surfaces against each other such that the pawl or slider enters the proper engagement. Therefore, an operation of cutting the device friendly to the user is obtained.

The pawl and the slider in the embodiment are implemented as separate members fixed to each other. It should be noted that in other embodiments, the pawl and the slider can be implemented as one piece.

The pawl and the slider in the embodiment are implemented as separate components, and the pawl may comprise a fixed head, such as a platform form, for example in the form of a rectangle.

The fixed head is configurable and arranged for the brake pawl to be fixed to the slider. In an embodiment, the implementation of the pawl and the fixed head protrudes from the opposite side of the grooved recess provided on the cutting handle. For example, the grooved recess can be disposed in the arcuate groove. Especially at the top end of the arched groove. A neck or the like is interconnected with the pawl and the fixed head to open into the slotted recess to support the sliding of the locking lever assembly.

The fixing head, when implemented in particular as a platform, can provide stability for additional guidance of the slider and thus increase the operability of the pawl.

In an embodiment, the fixing head, when implemented as a rectangular form, for example, may include a sliding profile for sliding engagement with the channel guiding recess, the recess being disposed or implemented in a handle, such as in an arched recess Wherein the engagement may be such a fixed head that it can be guided to move the slotted guide recess in the longitudinal direction. Such a sliding profile helps to avoid interference from the slider or to be in a closed state, an intermediate opening angle or a fully open state during adjustment or setting of the slider to one of the dispensing positions.

In an embodiment, the locking bar can have an integral L-shaped configuration, such as an L-shaped form, cross-section or configuration. The L-shaped configuration may comprise a rod-shaped neck interconnected to the fixed head, for example at an axial or longitudinal end of the locking rod, with at least one cantilever beam, for example disposed in other axial or other longitudinal directions of the locking rod end. Embodiments using an L-shaped configuration may be advantageous in which the locking lever provides a plurality of locking structures, such as assigned to a fully closed state, an intermediate opening angle, and a fully open state.

In an embodiment, at least one cantilever beam is for example projecting from the neck of the locking lever towards the pivot joint, for example in a direction substantially facing the pivot joint. For example, the cantilever beam or pawl of the locking lever can protrude from the neck toward a direction parallel to the movement of the slider, wherein the slider can be configured to slide in a linear motion toward and away from the pivot joint.

In an embodiment, the pawl and the fixed head project from opposite sides of the slotted guiding recess provided on the handle of the cutting device, preferably at the top of the arcuate recess, the configuration of the slotted guiding recess such that the pawl Move in a linear motion toward and away from the pivot joint. In such an embodiment, a corresponding locking element is implemented for engagement with the pawl, for example as a insert, ratchet or frame wheel, which may be designed integrally with the cutting blade.

In an embodiment, the at least one first sliding locking position may be associated with at least one intermediate locking position, the effective opening angle of the blade being limited to an intermediate angle of the intermediate locking position. At least one first slide lock position is positionable between the second and third slide lock positions. Second slide lock position It can be located closest to the pivot joint and is related to the fully closed state. The third slide lock position can be located at a position furthest from the pivot joint and is related to the unlocked position of the cutting blade. The first to third locking positions in the embodiment are disposed in reverse order.

In an embodiment, the locking bar assembly comprises at least one arcuate groove, for example implemented as a toothed element or a toothed element. In the case of a plurality of curved grooves, an arcuate groove structure may be provided with a plurality of separate and merged grooves.

In an embodiment the (these) arcuate grooves extend in a circumferential direction relative to the pivot joint and are parallel to the open or rotating faces of the cutting blades or the edges of the cutting blades.

The (these) curved grooves are, for example, integrally formed in combination with the cutting blade. The arcuate grooves may be defined at at least one circumferential end relative to the pivot joint, a corresponding abutment surface, or the circumferential direction of the corresponding abutment faces, for example, in respective (these) corresponding abutment shoulders.

The corresponding abutment faces in the embodiment are implemented such that they abut or abut against an abutment face or shoulder of the pawl, in which case the actual opening angle of the cutting blade corresponds to an intermediate opening angle or a fully closed state. In an embodiment, the normal vector of the abutment face and the corresponding abutment face may face in a direction parallel to the open or pivot face of the cutting blade(s).

The use or provision of an arcuate recess, such as a ring-shaped recess, as a corresponding locking or latching element may result in a simpler mechanical design.

In an embodiment, one of the at least one arcuate groove may be associated with a fully closed state and defined at a circumferential end of the locking face for locking engagement with the locking face of the pawl in a fully closed state of the cutting blade .

In an embodiment, for example, the maximum opening angle corresponds to a fully open configuration cutting blade of approximately 36 degrees and the intermediate opening angle is approximately 22 degrees.

In an embodiment, the locking bar can be further combined with the handle of the cutting blade as a corresponding cutting blade of the cutting blade. For example, the locking levers can be placed or attached to the stem of the respective handle. Thus, the locking lever can be combined with the handle or lever of the corresponding cutting blade, and a corresponding engagement or locking structure is adapted to be combined with the locking lever, in particular the pawl, which can be provided in the cutting blade, for example in the form of a concave wheel or the like form.

As can be seen from the above description, the above objects of the present invention can also be obtained from the exemplary embodiments of the present invention described below.

1‧‧‧Trimming machine

2‧‧‧Cutting Blade

3‧‧‧Corresponding cutting blade

4‧‧‧First handle

5‧‧‧second handle

6‧‧‧ pivot joint

7‧‧‧ Spring

8‧‧‧Lock lever assembly

9‧‧‧Sliding parts

10‧‧‧Arch groove

11‧‧‧ lateral arm

12‧‧‧Top part

13‧‧‧Brake claws

14‧‧‧Fixed head

15‧‧‧ neck

16‧‧‧Cantilever beam

17‧‧‧ fastening structure

18‧‧‧ trough recess

19‧‧‧Adjacency

20‧‧‧Abutment shoulder

21‧‧‧ corresponding to the first abutment surface

22‧‧‧Arc groove

23‧‧‧ Ratchet type wheel

24‧‧‧Arc-shaped groove

25‧‧‧ corresponding to the second abutment

26‧‧‧hook

27‧‧‧ Index structure

28‧‧‧ buckle

29‧‧‧Snap slot

A‧‧‧First lock configuration

B‧‧‧Second lock configuration

C‧‧‧ third lock configuration

α(i)‧‧‧Intermediate opening angle

((max)‧‧‧Maximum opening angle

Exemplary embodiments of the present invention will now be described in conjunction with the accompanying drawings, in which FIG. 1 is a perspective view showing a trimmer according to an embodiment of the present invention; FIG. 2 is a longitudinal sectional view showing the trimmer in a fully closed state; Longitudinal sectional view of the trimmer in the middle opening position; Fig. 4 shows a longitudinal sectional view of the trimmer in the fully open position; Fig. 5 shows a side view of the trimmer handle; Fig. 6 shows the sliding member of the locking lever assembly in the trimmer; Figure 7 is a cross-sectional view of the slider according to the BB line of Figure 5; Figure 8 is a view showing the pawl of the lock lever assembly in the trimmer; Figure 9 is a longitudinal sectional view showing one of the trimmer handlebars; The figure shows a top view of the handlebar of Figure 9; and Figure 11 shows a cross-sectional view of a portion of the lock bar assembly of the other embodiment.

According to an embodiment of the present invention, Fig. 1 shows a perspective view of the trimmer 1 as an example of a cutting device. The trimmer 1 can include a cutting blade 2 and a corresponding cutting blade 3, which are respectively coupled to a first handle 4 and a second handle 5 for manually operating the trimmer 1.

These blades 2, 3 are pivotally fixed to a pivot joint 6 to rotate the cutting blades 2, 3 and their cutting edges are arranged opposite each other. A cutting face (not shown), for example when operating the trimmer, moves the cutting edge of the cutting blades on the cutting face, corresponding to a plane parallel to the central face of the trimmer 1 with respect to the longitudinal direction of the trimmer 1.

The trimmer 1 can comprise springs 7, which act on the handles 4, 5 of the trimmer 1, and generate spring forces that cause the handles 4, 5 to be spaced apart from each other, thereby opening the cutting blades 2, 3. It should be noted that in the configuration of Fig. 1, the trimmer 1 is in the closed position, for example, the blades 2, 3 in this position are pivoted as close as possible to each other, and the spring 7 is in a compressed state. A corresponding opening angle can be defined as an opening angle of zero degrees.

The trimmer 1 may further comprise a locking lever assembly 8 adapted and configured for latching or locking the cutting blades 2, 3 in the closed state and for limiting the cutting blades 2, 3 effective opening angle to the intermediate opening angle, wherein the middle opening angle is between the fully closed state and the fully open state as shown in Fig. 1 (refer to Fig. 4).

The locking lever assembly 8 can include (as can be seen from Figure 1) a manually operated slider 9 for manually setting the locking lever assembly 8 to: a first locking configuration A associated with the intermediate opening angle, the cutting blade 2 3 The pivoting angle of the first locking arrangement A is limited between the fully closed state and the intermediate opening angle, wherein the intermediate opening angle is between the fully closed position and the fully open position; a second locking configuration B, and the fully closed state Related; and a third locking configuration C, relating to the unrestricted pivoting movement of the cutting blades 2, 3.

As indicated by the illustration of the area of the slider 9, the first locking arrangement A may correspond to an operating mode suitable for smaller hands. The second locking configuration B can correspond to the operation of the cutting blades in the locked state. The unrestricted pivotal movement of the cutting blades 2, 3 in the third locking arrangement C may correspond to an operating mode suitable for larger hands.

The second handle 5 on which the slider 9 on the locking lever assembly 8 is provided includes an elongated arched recess 10 extending longitudinally relative to the trimmer 1, the slider 9 having a corresponding arcuate cross section, Linear guidance is made in the groove 10 in the forward and backward directions, as indicated by the double arrows in FIG.

The slider 9 can be seen from the perspective view and the cross-sectional view shown in Figures 6 and 7, respectively, and the arched recess 10 can be implemented in a saddle structure such that the slider 9 is accompanied by the two sides of the arm 11 from the top of the slider. The portion 12 encloses the arcuate recess 10 in a downwardly extending manner. The saddle-shaped coupling surface of the slider 9 and the arched recess 10 can be implemented in the cylindrical dome and the cylindrical arch structure, which facilitates the avoidance of the slider when the slider 9 moves back and forth in the arched recess 10. 9 interference.

Fig. 2 is a cross-sectional view showing the trimmer in the fully closed state in Fig. 1. Some details of the locking lever assembly 8 can be inferred from Figure 2. The locking lever assembly 8 can include a detent 13 that is coupled to or integral with the slider 9.

The brake pawl 13 can be seen in detail from Fig. 8, which can include a fixed head 14, a neck 15 and a cantilever beam 16 interconnected to one another such that the pawl 13 has an integral L-shape or cross-section. The fixing head 14 or the platform may comprise a fastening structure 17 (cf. Fig. 8), in which case the pawl 13 and the slider 9 are implemented as two separate parts, and the slider 9 may comprise a corresponding correspondence The fastening structures (not shown) are separately arranged such that the slider 9 and the pawl 13 can be mechanically coupled to each other.

It can also be seen from Figures 1 and 2 that the fixed head 14 is located outside the arcuate recess 10, whereas the pawl 13 is located inside the arcuate recess 10, wherein the neck 15 passes through a slotted recess 18 (refer to Fig. 1) and guided in the longitudinal direction.

The locked state shown in Fig. 2 is provided on an abutting surface 19 (refer to Fig. 8) of the abutting shoulder 20 of the pawl 13 so as to be engaged with the first curved recess 22 in such a manner as to be close or abutting. A corresponding one of the first abutment faces 21, in particular the ring segment shape of the ratchet-type wheel segments 23 of the cutting blades 2 shown by the dashed lines.

The ratchet-type wheel segment 23 of the cutting blade 2 further comprises an arcuate groove 24, which is also in the shape of a ring segment, as shown by the dashed line in Fig. 2, which is located in an arcuate concave shape with respect to the radial direction of the pivot joint 6. The groove 22 is outside and longer than the arcuate groove 22 with respect to the circumferential direction.

Further curved recess 24 defines one end of the second abutment surface 25 in the circumferential direction, said second abutment surface 25 being adapted to abut against the abutment surface 19 of the cantilever beam 16 in the first locking arrangement A, in the first locking configuration The pivotal movement of the upper cutting blade 2 is limited to the intermediate opening angle (α(i)) (alpha-I, see Fig. 3).

Fig. 3 is a cross-sectional view showing the trimmer 1 of Fig. 1 disposed at an intermediate opening position as previously described. As can be seen from Fig. 3, the abutment face 19 of the cantilever beam 16 abuts against the corresponding second abutment face 25 of the ratchet wheel segment 23 of the cutting blade 2. In such a configuration, the slider is positioned in the first locking configuration A. An opening angle corresponds to the intermediate opening angle (α(i)), which may be, for example, approximately 22 degrees.

The slider comes to the third locking configuration C, in which the cutting blade 2 can be pivoted without restriction, as shown in Fig. 4, which shows a cross-sectional view of the trimmer 1 in a fully open state, the slider 9 It is at the third locking position that is farthest from the pivot joint 6. That is, the slider 9 is retracted as far as possible relative to the pivot joint 6 such that the abutment surface 19 of the cantilever beam 16 is positioned outside the arcuate groove 22 and also in the arc direction with respect to the radial direction of the pivot joint 6. The grooves 24 are externally shaped so that there is no interference between them. In such a configuration, the cutting blades 2, 3 can be fully opened, in which case a hook 26 engages the corresponding second abutment surface 25. For example, the hooks 26 can be implemented or arranged such that the maximum opening angle α(max) (alpha-max) of the cutting blades 2, 3 is about 36 degrees in the fully open state.

Figure 5 shows a side view of the second handle 5 on the trimmer 1, with the locking lever assembly 8 and the slider 9 disposed on the second handle 5. As can be seen from Fig. 5, the corresponding portion of the lateral arm 11 of the slider 9 and the curved recess 10 (which should be the arcuate recess 10), particularly the lower edge thereof, may comprise an index structure 27, which is used to bite or snap into the slider in the first to third locking configurations A-C. In the configuration shown in Fig. 5, the slider 9 is locked in the first lock configuration A as shown in Fig. 1, and the effective opening angle is limited to the intermediate lock angle (α(i)).

The indexing structure 27 can also be inferred from the cross-sectional view of the slider 9 of FIG. 7 and the cross-sectional view of the second handle 5 of FIG. 9, which may include a buckle 28 or a snap projection and a corresponding snap groove 29 or recess along The longitudinal direction of the arched groove 10 is set. The embodiment of the buckle 28 and the snap groove 29 allows the slider 9 to be locked in the first to third locking configurations A-C.

Figure 10 shows a top view of the second handle 5 with the slider 9 in the first configuration A. From Fig. 10, also from Figs. 5 and 9, it can be inferred in particular that the slider 9 in the arcuate recess 10 moves in a longitudinal direction substantially corresponding to the cutting arrangement 1 and/or the second handle 5 The longitudinal direction or at least a part of them (refer to the double arrow of Fig. 10).

The slider 9 is coupled to the arcuate recess 10 so that the user can move between different locking configurations A to C, for example, a finger of the hand, such as a thumb, actually grips the trimmer 1. Therefore, adjusting the opening angles in the closed state to different opening angles or locking the cutting blades 2, 3 is achievable in a relatively easy manual operation.

Fig. 11 is a cross-sectional view showing the portion of the lock lever assembly 8 of the trimmer 1 in other embodiments, mainly differing from the embodiment shown in Figs. 1 to 10 in that the ratchet type wheel segment 23 of this embodiment only contains A single arcuate recess 22, and the pawl 13 includes a plurality of abutment faces 30.1 and 30.2 disposed on respective shoulders. These abutment faces 30.1 and 30.2 correspond to a fully closed state of the locked position, and the intermediate lock position allows the pivotal movement of the cutting blade 2 to reach the intermediate opening angle α(i).

The configuration shown in Fig. 11 represents the same solution as in Figs. 1 to 10, which is accompanied by abutting faces 30.1, 30.2 and corresponding abutting faces 21 which are slightly twisted. It is not a ratchet type wheel segment 23, which comprises a plurality of corresponding abutment faces, but its brake pawl 13 comprises a plurality of abutment faces 30.1, 30.2, said abutment faces 30.1, 30.2 being selectively actuatable by brake pawls 13 The sliding of the slider 9 along the arcuate groove 10 coincides with the engagement of the single arcuate groove 22.

In other words, in other embodiments, the pawl 13 includes a hierarchically disposed abutment faces 30.1, 30.2 that are designed to engage, by locking the sliders (not shown) in respective locking configurations, with the corresponding abutment faces 21 being disposed in a ratchet type Wheel segment 23.

With such a configuration, the depth of the abutment faces 30.1, 30.2 on the pawl 13 may be, for example, between 2 mm and 3 mm with respect to the longitudinal direction of the trimmer 1 in the closed configuration, or in the radial direction relative to the pivot joint. .

Referring again to Fig. 8, it can be inferred from Fig. 8 that the abutment surface 19 is inclined such that the height of the cantilever beam 16 abutting the region of the shoulder 20 increases toward the distal free end of the cantilever beam 16. These corresponding abutment faces 21, 25 may have corresponding inclinations such that the pawl 13 and the ratchet-type wheel segment 23 are biased towards each other, in which case the abutment face 19 approaches or abuts each other with the corresponding abutment faces 21, 25. Therefore, these inclined surfaces provide a self-locking connection. This results in additional mechanical stabilization due to external action on the cutting device, preventing unnecessary opening of the cutting device (for example when the cutting device falls to the ground). It is mentioned here that, although not shown in Fig. 11, a correspondingly inclined surface may be provided for the embodiment shown in Fig. 11, for example, the abutment faces 30.1, 30.2 and the corresponding abutment faces 21.

In particular, it is inferred from the above-described exemplary embodiments of the present invention that the above described objects can be easily obtained.

1‧‧‧Trimming machine

2‧‧‧Cutting Blade

3‧‧‧Corresponding cutting blade

4‧‧‧First handle

5‧‧‧second handle

6‧‧‧ pivot joint

7‧‧‧ Spring

8‧‧‧Lock lever assembly

9‧‧‧Sliding parts

10‧‧‧Arch groove

18‧‧‧ trough recess

Claims (15)

A manually operated cutting device (1), in particular a trimmer (1) or a pruning shear, comprising at least one cutting blade (2) pivotally fixed to a pivot joint (6), the cutting device (1) comprising a locking lever assembly (8) operable to an intermediate locking position (A) to limit an effective opening angle (α(max)) of the cutting blade (2) to an intermediate opening angle (α(i)), The intermediate opening angle (α(i)) is between the closed angle defined by the blade (2) between a fully closed state and a fully open state, characterized in that the locking lever assembly (8) comprises a connection to a manual operation a pawl (13) of the slider (9), the slider (9) being combined with a linear slide (10) for moving in and out by a movement in the longitudinal direction of the cutting device (1) This intermediate locking position (A). The manually operated cutting device (1) of claim 1, wherein the locking lever assembly (8) is further operable to a locked operating state (B) to lock the cutting blade (2) in a closed state. The state, and to an unlocked operational state (C), allows the cutting blade (2) to rotate unrestricted between a fully closed state and a fully open state. A manually operated cutting device (1) according to any one of the preceding claims, wherein the sliding member (9) has an arched cross section and is slidably coupled to an elongated An arched recess (10) is preferably embodied on the outer side of the operating arm (5) in combination with a corresponding cutting blade (3). A manually operated cutting device (1) according to at least one of the preceding claims, wherein the slider (9) comprises an index profile (27) for use at least in the middle A first index position (A) associated with the locking position locks the slider (9), and the index profile (27) is preferably implemented in at least one of the two lateral arms (11), the two-sided arm (11) Extending from a top portion (12) of the slider (9), the index outline (27) preferably includes a second index position (B) and a third index respectively assigned to the fully closed state and the fully open state. Location (C). The manually operated cutting device (1) of claim 3, wherein the linear guide of the linear slide at the distal end of at least one of the arms (11) is engaged in the arch A corresponding guide rail of the groove (10), the linear guide rail and the corresponding linear guide rail are preferably implemented as a combination of a guide rod and a guide rail. A manually operated cutting device (1) according to at least one of the preceding claims, wherein the locking lever assembly (8, 13) comprises at least one cantilever beam (16) oriented parallel to The direction of the open face defined by the cutting blade (2), the cantilever beam (16) is free at its distance The ends have the abutting faces (19, 20, 30.2) for abutting against a corresponding abutment face (21) in the intermediate rotational position of the cutting blade (2), thereby limiting the cutting blade (2) to the intermediate opening angle ( The rotation of α(i)). The manually operated cutting device (1) of claim 6, wherein the locking lever assembly (8, 13) includes a locking surface (19, 30.1) as one of the at least one cantilever beam (16). ) for locking engagement with a corresponding abutment surface (21) to lock the cutting blade (2) in a fully closed state. A manually operated cutting device (1) according to claim 6 or 7, wherein at least one of the abutting faces (19, 30.1, 30.2), the corresponding abutting faces (21, 25), the lock The face and the corresponding locking face are inclined relative to the corresponding cantilever beam (16) in the longitudinal direction to facilitate a self-locking action between the abutting faces (19, 30.1, 30.2) and the opposing corresponding abutment faces (21, 25) . A manually operated cutting device (1) according to at least one of the first to eighth aspects of the invention, wherein the brake pawl (13) and the slider (9) are implemented as separate components fixed to each other, The brake pawl (13) preferably includes a fixing head (14) for fixing the brake pawl (13) to the slider (9), and the brake pawl (13) and the fixing head (14) are preferably An opposite side of a trough-shaped recess (18) is provided. The trough-shaped recess (18) is disposed on a handle (5) of the device (1). The fixed head (14) preferably includes a sliding profile for The groove-shaped recess (18) is slidably engaged to be movable in the longitudinal direction. The manual operation cutting device (1) of claim 6 or claim 9, wherein the brake pawl (13) has an integral L-shaped configuration with the fixed head (14) and A rod-shaped neck (15) interconnected by at least one cantilever beam (16), the at least one cantilever beam (16) preferably projecting from the rod-shaped neck portion (15) toward the pivot joint (6). The manual operation cutting device of claim 9 or 10, wherein the brake pawl (13) and the fixing head (14) are from the handle (5) provided on the cutting device (1) Opposite side of the channel-shaped guiding recess (18), the channel-shaped guiding recess (18) being configured such that the pawl (13) moves in a linear motion toward and away from the pivot joint (6), wherein Preferably, a second slider locking position (B) is located closest to the pivot joint (6) in relation to the fully closed state; wherein a third slider locking position (C) is located farthest from the a pivot joint (6) and a position related to the pivot joint (6) and the unlocking position of the cutting blade (2) And wherein a first locking arrangement position (A) between the second slider locking position (B) and the third slider locking position (C) is related to the intermediate locking position, wherein the blade is The effective opening angle is limited to the intermediate opening angle (α(i)) at the intermediate locking position. A manually operated cutting device (1) according to any one of the preceding claims, wherein the locking lever assembly (8) comprises at least one arcuate groove (22, 24), a circumferential direction extending relative to the pivot joint (6) and parallel to the open face of the cutting blade (2), and in combination with the cutting blade, preferably integrally formed with the cutting blade (2), the recesses The grooves (22, 24) are defined at at least one circumferential end portion corresponding to the circumferential direction of the abutting faces (21, 25), and the corresponding abutting faces (21, 25) are implemented such that the aforementioned corresponding abutting faces (21, 25) abut The abutting faces (19, 30.2) of the pawl (13), in which case the actual opening angle of the cutting blade (2) corresponds to the intermediate opening angle (α(i)), wherein the corresponding abutting faces The normal vectors of (21, 25) and the abutting faces (19, 30.2) are preferably oriented parallel to the opening face of the cutting blade (2). A manually operated cutting device (1) according to claim 12, wherein one of the at least one arcuate groove (22) is associated with a fully closed state and is defined at a circumference of the locking face (21) The end portion is for locking engagement with the locking surface (19) of the brake pawl (13) in the fully closed state of the cutting blade (2). The manual operation cutting device (1) according to at least one of the first to thirteenth aspect, wherein the maximum opening angle (α(max)) corresponds to a fully open state of approximately 36 degrees, and the intermediate opening angle ( α(i)) is approximately 22 degrees. A manually operated cutting device (1) according to at least one of the claims 1 to 14, the locking lever assembly (8) being combined with a handle (5) of a further cutting blade (3) Preferably, it is combined with a stem of the handle (5), wherein the other cutting blade (3) acts as a corresponding cutting blade of the cutting blade (2).