Trimming tool

Abstract

Trimming tool, characterized in that the trimming tool comprises the following: a housing to which a protective plate is attached; a cutting device and a drive device, both of which are arranged on the housing, the cutting device having a cutting plane, the drive device being configured to drive the cutting device; a display device arranged on the protective plate, wherein the display device is configured to indicate a tilting state of the cutting plane relative to a reference plane; wherein the tilting axis is a line running along the longitudinal direction of the cutting plane and parallel to the reference plane, wherein the tilting state is a tilting of the cutting plane about the tilting axis relative to the reference plane.

Description

[0001] The present application claims priority from the Chinese patent application filed with the Chinese Patent Office on April 2, 2025, under application number 202520618063.7 and entitled “Trimming Device”, and from the Chinese patent application filed with the Chinese Patent Office on December 31, 2025, under application number 202512059010.3 and entitled “Trimming Tool”, the entire contents of which are incorporated into the present application by reference. Technical field

[0002] The invention relates to the technical field of trimming tools, in particular to a trimming tool. Background technology

[0003] Currently, trimming tools are widely used in horticultural trimming to prune flowers, trees, shrubs, and other plants. This allows for controlling plant height and shape, creating a neat and aesthetically pleasing landscape, and promoting healthy plant growth. However, when using these tools, it is common for the trimmed plants not to achieve the desired uniform height, resulting in inconsistent trim heights and uneven lines, thus compromising the uniformity of the trim and the overall effect. Content of the invention

[0004] The aim of the present invention is to overcome at least one of the aforementioned disadvantages of the prior art and to provide a trimming tool in order to improve the user experience and increase the trimming quality of the material being trimmed.

[0005] Additional aspects and advantages of this invention will be partly explained in the following description and partly evident from the description or learnable from the implementation of the present invention.

[0006] According to one aspect of the invention, a trimming tool is provided, wherein the trimming tool comprises the following: a housing to which a protective plate is attached; a cutting device and a drive device, both arranged on the housing, wherein the cutting device has a cutting plane; wherein the drive device is configured to drive the cutting device; a display device arranged on the protective plate, wherein the display device is configured to indicate the tilt state of the cutting plane relative to a reference plane; where a line running along the longitudinal direction of the cutting plane and parallel to the reference plane is considered the tilting axis, and the tilting state describes a state in which the cutting plane is tilted about this tilting axis relative to the reference plane. The longitudinal direction of the device corresponds to its longitudinal extension direction.

[0007] By arranging a display device on the guard plate and defining the tilt axis as a straight line running along the longitudinal direction of the cutting plane and parallel to the reference plane, a uniform geometric definition and a clear indication of the cutting plane's tilt status relative to the reference plane are achieved. Users can continuously observe the tilt direction and angle of the cutting blade in their front field of vision while aligning it with the object to be trimmed. Real-time feedback of the user's posture allows them to immediately and precisely adjust their grip and the position of the trimming tool to ensure that the cutting plane is always as close as possible to the desired reference plane (e.g., the horizontal plane).This eliminates the need to frequently look down or back at the rear of the tool, significantly reducing the number of gaze shifts and posture adjustments. This minimizes unwanted tilting caused by wrist rotations, posture changes, terrain, or fatigue. For operators, the display provides objective assistance, facilitating the learning and mastery of horizontal trimming techniques, flattening the learning curve, and reducing the time spent repeatedly checking and adjusting cutting plane positions. Users can trim more smoothly and continuously without having to stop to make adjustments or rework due to uneven trim edges.This helps to keep the cutting plane close to the specified reference plane, improve the consistency of trim and cut heights, and optimize the uniformity and aesthetics of the cut.

[0008] In some embodiments of this disclosure based on the above solution, the trimming tool also includes the following: a level detection device connected to the display device and configured to detect the tilt state of the cutting plane relative to the reference plane and output a detection signal; a control unit configured to control the operating state of the display unit based on the detection signal.

[0009] By introducing a level detection device and a control unit, the level detection device can automatically and in real time detect the tilt angle of the cutting plane relative to the user-defined reference plane. The detection signal is transmitted to the control unit, which drives the display unit to provide clear feedback on the current tilt status. Based on the detection signal, the control unit regulates the operating state of the display unit, thus reducing dependence on user experience and subjective judgment, and minimizing operator errors. The level detection device, the control unit, and the display unit form a closed control system.The detection signal is processed quickly and converted into a display state, keeping feedback delay low. Under operating conditions requiring precise horizontal or vertical trimming, users can more easily control the cutting plane within a range closely aligned with the target reference plane. This increases the consistency of trim height and cutting lines, improving the uniformity and optical quality of the overall trimming result.

[0010] In some embodiments of this disclosure based on the above solution, the display device comprises at least two groups of light panels; wherein at least two groups of light panels are arranged on the protective panel, wherein projections of any two groups of light panels on the plane of the protective panel enclose a predetermined angle to each other.

[0011] This arrangement places at least two groups of light panels on the protective plate at a predetermined angle to each other, so that the respective groups of light panels represent different display directions or different display areas in the plane projection. This enables a "zonal display" of the tilt information in space, making it easier for the user to visually distinguish the tilt direction and approximate degree. Furthermore, by controlling the display changes of only a portion or a section of the light panels, instead of uniformly changing the state of all light panels, a more precise attitude indication can be provided without increasing structural complexity.This allows the user, while maintaining a forward gaze, to quickly identify which side the current cutting plane is tilted to and whether it exceeds the expected range. This contributes to improved accuracy and reaction speed when adjusting the trimming position, thereby increasing the straightness of the trim line and the consistency of overall trimming results.

[0012] In some embodiments of this disclosure based on the above solution, the display device comprises at least two groups of light panels; wherein at least two groups of light panels are arranged on the protective panel, wherein projections of each of two groups of light panels run parallel to each other on the plane of the protective panel.

[0013] This arrangement of multiple parallel light panels at the front of the tool corresponds to several parallel "reference lines," providing continuous indication of the cutting plane's tilt in a single direction. Even with slight changes in the user's viewing angle, the parallel geometric relationship of the light panels remains stable, improving the readability and consistency of the displayed information. Furthermore, by introducing differentiated operating responses between the parallel light panels, tilt into different ranges or varying degrees can be mapped to different light panels or combinations thereof. This enables a graduated display of tilt information in the same direction, allowing the user to more easily assess whether the tilt exceeds the permissible range and make timely adjustments.This contributes to improving the trim quality in terms of trim height and straightness of the cutting line, and improves the uniformity and appearance of the trim results.

[0014] In some embodiments of this disclosure based on the above solution, the display device comprises at least two groups of light panels; wherein in two adjacent groups of light panels an output terminal of one group is electrically connected in series to an input terminal of the other group.

[0015] In this embodiment, the output and input terminals of adjacent light panels are electrically connected in series. On the one hand, cascading multiple groups of light panels enables signal transmission and control without requiring separate control lines for each group. This reduces the number of wiring harnesses and control connection occupancy, simplifies the electrical connection structure, decreases wiring complexity and assembly effort, and thus helps lower overall manufacturing costs. On the other hand, the series connection facilitates the addition or removal of light panels as needed. If the display area needs to be expanded or the resolution of the tilt indicator increased, it is sufficient to insert additional light panels into the series, ensuring good expandability.Furthermore, the display allows the signal to be transmitted and reacted to sequentially along the series-connected path of the light panels, enabling the user to quickly recognize the current tilt state by the number or distribution of the illuminated panels. This allows for more precise and efficient adjustment of the trim position, thereby improving the consistency and accuracy of the trim result.

[0016] In some embodiments of this disclosure based on the above solution, a first handle and a second handle are arranged on the housing; wherein the first handle is arranged at the end of the housing closer to the cutting device and the protective plate; wherein the second handle is arranged at the end of the housing furthest from the cutting device and the protective plate; wherein the display plane of the display device forms a first angle with the cutting plane; wherein the first angle is greater than or equal to 20° and less than 90°; and / or a reference plane that is perpendicular to the cutting plane and forms an angle of inclination with the cross-section running along the longitudinal direction of the first handle; wherein the angle of inclination is in the range of 0° to 15°; and / or wherein the display device forms a preset plane near the lower end of the housing and the upper end of the handle section of the first handle, wherein there is a second angle between the preset plane and the cutting plane, the second angle being between 0° and 90°; and / or wherein the plane formed by the line connecting the top of the first handle and the top of the protective plate forms a third angle with the horizontal plane in which the top of the first handle is located; wherein the third angle is between 10° and 45°; and / or wherein the plane formed by the line connecting the lateral tip of the first handle and the lateral tip of the guard plate forms a fourth angle with the cutting plane; wherein the fourth angle lies between 0° and 35°; and / or wherein the widest distance of the projection of the first handle on the projection plane, which is perpendicular to the cutting plane, is considered the first distance; wherein the widest distance of the projection of the display device is considered the second distance; wherein the range of values ​​for the first distance is between 190 mm and 250 mm; wherein the range of values ​​for the second distance is between 100 mm and 250 mm, wherein the ratio between the first distance and the second distance is between 1:1 and 1:2.5.

[0017] In this embodiment, by forming a first angle between the display plane of the indicator device and the cutting plane, wherein the first angle A is limited to a value greater than or equal to 20° and less than 90°, the display plane is positioned so that the user can observe it naturally by looking down or slightly rotating their gaze while maintaining a normal trimming posture. This facilitates the simultaneous observation of the cutting line and the tilt indicator without significantly altering the grip position.

[0018] By limiting the tilt angle B of the first handle relative to the reference plane, which is perpendicular to the cutting plane, to a range of 0° to 15°, the first handle can exhibit an appropriate tilt while essentially maintaining its alignment with the housing. This reduces wrist rotation when held by the user and decreases fatigue during extended use. Simultaneously, the slight tilt of the first handle allows the user to make smoother and more controlled changes in the trimmer tool's position during minor rotational or lifting movements, facilitating precise fine-tuning of the cutting plane tilt.

[0019] By defining a reference plane, jointly determined by the lower end of the display near the housing and the upper end of the first handle section, and by positioning this reference plane at a second angle to the cutting plane, with this second angle limited to 0° to 90°, the relative spatial relationship between the display and the first handle can be restricted in both the vertical and forward / backward directions. This prevents the display from being positioned too low and thus obscured by the gripping hand or the object being trimmed, but also from being positioned too high and thus affecting the tool's center of gravity and the user's field of vision.In this way, the target area of ​​the plane can be located in space that is easily visible to the user when naturally extending the arm and normally gripping the first handle, which is beneficial for obtaining tilt information while observing the cutting area.

[0020] The plane formed by the line connecting the top of the first handle and the top of the guard plate forms a third angle with the horizontal plane in which the top of the first handle is located. This angle is limited to between 10° and 45°, allowing the height difference of the guard plate relative to the top of the first handle to be reasonably determined vertically. This ensures that the guard plate has sufficient height to support the display device and fulfill its protective functions, without being raised so high as to obstruct the user's view of the area in front of them and the cutting area.

[0021] The plane formed by the line connecting the lateral tip of the first handle and the lateral tip of the guard plate forms a fourth angle with the cutting plane, with this fourth angle lying between 0° and 35°. This allows the relative displacement between the first handle and the guard plate to be limited in a lateral-upward direction. When the fourth angle falls within a reasonable range of this range, the guard plate exhibits a certain degree of lateral displacement relative to the first handle. This reduces the obstruction of the indicator by the gripping hand without creating excessive lateral displacement that could generate significant torque under lateral load on the trimming tool and compromise operational stability.

[0022] The widest projection of the first handle onto the projection plane perpendicular to the cutting plane is defined as the first distance, with a range of values ​​between 190 mm and 250 mm. Simultaneously, the widest projection of the display is defined as the second distance, with a range of values ​​between 100 mm and 250 mm. The ratio between the first and second distances is between 1:1 and 1:2.5. This ensures an appropriate width ratio between the handle area and the display area. The range of values ​​for the first distance guarantees that the grip width of the first handle is sufficiently wide to accommodate different hand shapes and the use of gloves, without compromising grip stability due to an overly narrow design or making the tool unwieldy due to an overly wide design.On the other hand, the range of values ​​for the second distance ensures that the display device allows for a sufficiently wide arrangement of the display elements without obscuring the field of view or significantly increasing the load on the front.

[0023] In some embodiments of this disclosure based on the above solution, the trimming tool also includes the following: a first connecting wire which is electrically connected at one end to the level detection device, wherein the first connecting wire is configured to transmit the tilt signal of the cutting plane relative to the reference plane detected by the level detection device; wherein the control device is electrically connected to the other end of the first connecting wire and is configured to output a display signal based on the tilt signal; a second connecting wire which is electrically connected at one end to the control device, wherein the other end of the second connecting wire is electrically connected to the input terminal of any group of light panels; the second connecting wire is configured to apply the display signal to the light panels.

[0024] In this embodiment, the functionality between the level detection device and the light panel is electrically segmented by the arrangement of a first connecting wire, a control unit, and a second connecting wire: One end of the first connecting wire is electrically connected to the level detection device and serves specifically to transmit the tilt signal of the cutting plane relative to the reference plane, as detected by the level detection device. This tilt signal is transmitted via an independent line after leaving the level detection device, which reduces the influence of external interference on the tilt signal. The control unit is electrically connected to the other end of the first connecting wire and generates a display signal based on the tilt signal to control the display unit, thereby converting and logically processing the tilt signal into the display signal.One end of the second connecting wire is electrically connected to the control unit, while the other end, depending on the design of the protective plate, can be extended either into the center or side area of ​​the protective plate and electrically connected to the input of any group of light panels. This allows the display signal to be flexibly loaded onto light panels in different positions, making it possible to adjust the mounting position of the light panel without changing the relative position between the level detection device and the control unit, in order to accommodate different shapes of protective plates or designs of different display zones.

[0025] In some embodiments of this disclosure based on the above solution, several LED groups are arranged on the light panel; wherein the operating state of the display device includes the brightness level and / or the lighting position of the LED groups and / or the display color of the LED groups.

[0026] According to the second aspect of the invention, a trimming tool is provided, the trimming tool comprising the following: a housing to which a protective plate is attached; a cutting device and a drive device, both arranged on the housing, wherein the cutting device has a cutting plane; wherein the drive device is configured to drive the cutting device; a display device arranged on the protective plate, wherein the display device is configured to indicate the tilt state of the cutting plane relative to a reference plane; a level detection device housed in the casing and configured to detect the tilt state of the cutting plane relative to the reference plane and output a detection signal; where the reference plane includes a first reference plane and / or a second reference plane; where the first reference plane is the plane in which the cutting plane is located when the cutting plane is parallel to the horizontal plane; where the second reference plane is the plane in which the cutting plane is located when the cutting plane is perpendicular to the horizontal plane.

[0027] In this embodiment, the tilt state of the cutting plane relative to the reference plane is detected and displayed by arranging a cutting device, a drive unit on the housing, and a display unit on the guard plate, as well as by incorporating a level detection device connected to the display unit. On the one hand, the orientation of the cutting plane is linked to a unique geometric reference, which simplifies the selection of the appropriate reference plane in different work scenarios (such as horizontal trimming from the top end and vertical trimming of side surfaces). On the other hand, the tilt state is automatically detected by the level detection device and transmitted to the display unit as a detection signal, thus enabling the display to be shown directly on the front of the guard plate.This avoids the problem of the operator having to visually assess the position of the cutting blade or repeatedly adjust their posture to determine the horizontal or vertical degree, thus reducing subjective sources of error.

[0028] In some embodiments of this disclosure based on the above solution, the housing comprises a first housing and a second housing, wherein the first handle is arranged on the first housing, wherein the second handle is arranged on the second housing, and wherein the first housing is rotatably connected to the second housing; a sensor device that is arranged on the second housing and configured to detect information about the relative rotation of the second housing or the first housing and outputs a rotation signal; a control device that, based on the rotation signal, controls the display device to display in its corresponding preset range according to the detection signal.

[0029] According to the third aspect of the invention, a trimming tool is provided, the trimming tool comprising the following: a housing to which a protective plate is attached; a cutting device arranged on the housing, wherein the cutting device has a cutting plane; a level detection device arranged on the housing and configured to detect the tilt state of the cutting plane relative to the reference plane and output a detection signal; a first connecting wire which is electrically connected at one end to the level detection device and is configured to transmit the detection signal detected by the level detection device; a control device that is located on the housing, electrically connected to the other end of the first connecting wire and configured to output a display signal based on the detection signal; a drive unit configured to drive the cutting unit; a display device that is arranged on the housing; a second connecting wire, wherein one end of the second connecting wire is electrically connected to the control device, wherein the other end of the second connecting wire is connected to the display device, wherein the second connecting wire is configured to load the display signal onto the display device; the display device is configured to indicate the tilt state of the cutting plane relative to a reference plane based on the display signal.

[0030] In this embodiment, the display schematically indicates the tilt status of the cutting plane based on the display signal, allowing the operator to recognize in real time, without relying on visual judgment, whether the current position deviates from the reference plane. This enables timely correction of the cutting motion, improving the straightness and height consistency of the trim track and reducing the risk of operator error. The structure described above represents a holistic optimization of the signal detection, processing, and display process and is not limited to a simple adjustment of the cable routing or the display position.

[0031] In some embodiments of this disclosure based on the above solution, the housing comprises a first housing with a first handle and a second housing with a second handle; wherein the first handle is arranged at the end closer to the cutting device; wherein the second handle is arranged at the end furthest from the cutting device; wherein the indicator device is arranged on the protective plate, or the indicator device is arranged on the corresponding housing of the first handle and the second handle.

[0032] In some embodiments of this disclosure based on the above solution, the display device is arranged on the protective plate, wherein the first connecting wire is electrically connected at one end to the level detection device, wherein the first connecting wire is configured to transmit the tilt signal of the cutting plane relative to the reference plane detected by the level detection device; wherein the control device is electrically connected to the other end of the first connecting wire and is configured to output a display signal based on the tilt signal; wherein the second connecting wire is electrically connected at one end to the control device, wherein the other end of the second connecting wire extends into the central area of ​​the protective plate and is electrically connected to the display device; or wherein the other end of the second connecting wire extends into the lateral area of ​​the protective plate and is connected to the display device, wherein the second connecting wire is configured to load the display signal onto the display device.

[0033] In some embodiments of this disclosure based on the above solution, the second handle is rotatably connected to the housing; wherein the trimming tool further comprises a sensor device; wherein the sensor device is arranged on the housing, wherein the sensor device is configured to detect rotation information of the second handle and output a rotation signal; wherein the control device, based on the rotation signal, controls the display device to perform a display in its corresponding preset range according to the detection signal.

[0034] In some embodiments of this disclosure based on the above solution, the housing has a first housing with a first handle and a second housing with a second handle; wherein the first handle is arranged at the end of the housing closest to the cutting device; wherein the second handle is arranged at the end of the housing furthest from the cutting device; wherein the protective plate is arranged at the end of the housing closer to the cutting device; wherein the display device is arranged on the protective plate, or the display device is arranged on the housing between the first handle and the second handle.

[0035] In some embodiments of this disclosure based on the above solution, the first housing is rotatably connected to the second housing; a sensor device that is arranged on the second housing and configured to detect information about the relative rotation of the second housing or the first housing and outputs a rotation signal; a control device that, based on the rotation signal, controls the display device to display in its corresponding preset range according to the detection signal.

[0036] In some embodiments of this disclosure based on the above solution, the display device comprises at least one group of light panels; wherein the end of the second connecting wire furthest from the control device is electrically connected to the input terminal of any group of light panels; the second connecting wire is configured to apply the display signal to the light panels.

[0037] In this embodiment, the end of the second connecting wire furthest from the control unit can, through the aforementioned arrangement, selectively extend to either the central or lateral area of ​​the protective plate and be electrically connected to the input terminal of any group of light panels, thus allowing the display signal to be flexibly loaded onto light panels in different positions. On the one hand, the central area is located closer to the axis of the trimmer tool's front field of vision, which is suitable for providing the user with an intuitive tilt indication in forward trimming scenarios; on the other hand, the lateral area facilitates the avoidance of partial obstruction by plants, hands, or housing in certain trimming positions or specific structural configurations, thereby improving the visibility of the light panel under various operating conditions.Simultaneously, the second connecting wire serves exclusively as a transmission path for the display signal, forwarding the signal output by the control unit to the target light panel in an orderly manner, without requiring any changes to the position of the control unit or other circuit components. This promotes the standardization and modularization of the wiring harness design and facilitates the reuse of the same control circuit concept across different models and with different protective plate shapes.

[0038] According to the fourth aspect of the invention, a trimming tool is provided, the trimming tool comprising the following: a housing comprising the following, wherein the first housing is provided with a first handle, wherein the second housing is provided with a second handle, and wherein the first housing is rotatably connected to the second housing; a cutting device and a drive device, both of which are arranged on the housing, wherein the cutting device has a cutting plane, and wherein the drive device is configured to drive the cutting device; a level detection device arranged on the housing and configured to detect the tilt state of the cutting plane relative to the reference plane and output a detection signal; a display device arranged on the housing between the first handle and the second handle, wherein the display device is configured to indicate a tilting state of the cutting plane relative to a reference plane; a sensor device that is arranged on the housing and configured to detect information about the rotation of the second housing relative to the first housing and outputs a rotation signal; a control device which, based on the detection signal by comparison with a predetermined threshold, outputs a first signal and a second signal, wherein the first signal and the second signal indicate different operating states of the display device; wherein the control device selects the target range based on the rotation signal and controls the display device to display in its corresponding target range according to the detection signal; where a line running along the longitudinal direction of the cutting plane and parallel to the reference plane is considered the tilting axis, and the tilting state describes a state in which the cutting plane is tilted about this tilting axis relative to the reference plane.

[0039] In this embodiment, the first housing with the first handle is designed to be rotatably connected to the second housing via the second handle. A sensor device is arranged on the housing to detect rotation information of the first housing relative to the second housing. Based on the rotation signal, the control device selects a preset range for the display device and, based on the detection signal from the level detection device, controls the selected preset range for display. This establishes a correspondence between the rotational position of the first housing and the display position of the display area, and the display information, which reflects the tilt state of the cutting plane, is made visible to the user near the handle area.This allows the user to perceive the spatial deviation of the cutting plane in real time, without having to rely solely on visual assessment of the blade's position or subjective experience. Adjusting the rotation angle of the first housing enables precise adjustment of the cutting plane. This helps to keep the cutting plane within an acceptable range close to the reference plane under different working positions and trimming directions, thereby improving the straightness and consistency of the trim line, reducing the risk of operator error, and increasing comfort during extended working hours.

[0040] In some embodiments of this disclosure based on the above solution, the preset range includes a first position; when the cross-section of the second handle, which extends along the longitudinal direction of the trimming tool, is perpendicular to the cutting plane, the first housing is in the first position; wherein the first housing can be rotated into the first position relative to the second handle; wherein, in the first position, the control device outputs a first signal and a second signal to the display device based on the detection signal output by the level detection device by comparison with the preset threshold, wherein the first signal and the second signal represent different operating states of the display device.

[0041] In some embodiments of this disclosure at the first position based on the above solution, the display device shows a first signal when the measured value of the level detection device is greater than or equal to the first threshold; wherein the display device shows a second signal when the measured value of the level detection device is less than the first threshold; and / or the display device shows a third signal when the measured value of the level detection device is equal to the first threshold.

[0042] In some embodiments of this disclosure based on the above solution, the first housing can be rotated relative to the second handle into a second position and / or a third position, wherein the cross-section of the second handle, extending along the longitudinal direction of the trimming tool, is parallel to or plane with the cutting plane. The first housing is arranged in the second position and / or the third position such that the second position and the third position are positioned relative to each other along the cross-section of the second handle extending in the longitudinal direction of the trimming tool. When the first housing is in the second position and / or the third position, the level detection device outputs a first signal and a second signal, respectively, based on a second threshold. The first signal and the second signal represent different operating states of the indicator device.

[0043] In some embodiments of this disclosure at the first position based on the above solution, the display device shows a first signal when the measured value of the level detection device is greater than or equal to the second threshold; wherein the display device shows a second signal when the measured value of the level detection device is less than the second threshold; and / or the display device shows a third signal when the measured value of the level detection device is equal to the second threshold.

[0044] In some embodiments of this disclosure at the third position based on the above solution, the level detection device outputs the first signal and the second signal based on the third threshold; the first signal and the second signal representing different operating states of the display device. If the measured value of the level detection device is greater than the third threshold, the display device displays a first signal; if the measured value of the level detection device is less than the third threshold, the display device displays a second signal; if the measured value of the level detection device is equal to the third threshold, the display device displays a third signal.

[0045] According to the fifth aspect of the present invention, a trimming tool is provided, the trimming tool comprising the following: a housing on which a protective plate, a first handle and a second handle are arranged; wherein the first handle is arranged at the end of the housing closer to the cutting device and the protective plate; wherein the second handle is arranged at the end of the housing furthest from the cutting device and the protective plate; a cutting device and a drive device, both of which are arranged on the housing, wherein the cutting device has a cutting plane, and wherein the drive device is configured to drive the cutting device; a display device arranged on the guard plate, or the display device arranged on a housing located between the first handle and the second handle; wherein the display device is configured to indicate the tilt state of the cutting plane relative to a reference plane; a level detection device housed in the casing and configured to detect the tilt state of the cutting plane relative to the reference plane and output a detection signal; where a line running along the longitudinal direction of the cutting plane and parallel to the reference plane is considered the tilting axis, and the tilting state describes a state in which the cutting plane is tilted about this tilting axis relative to the reference plane.

[0046] In this embodiment, the arrangement of a protective plate, a first handle, and a second handle on the housing, as well as the placement of the display device on the protective plate or on the housing between the first and second handles, positions the display device in a front field of view between the two handles and near the side of the cutting device. This allows the user, while holding the trimming tool with both hands and aligning it with the object being trimmed, to directly observe the tilt state of the cutting plane relative to the reference plane without having to turn around to view the back of the housing or look down at the end of the handle.In accordance with the definition of the tilt axis as a straight line running along the length of the cutting plane and parallel to the reference plane, the tilt state displayed by the indicator corresponds to the actual spatial change in the cutting blade's position around this tilt axis. This makes the display of the tilt direction and degree more intuitive and consistent, facilitates timely correction of the trimming tool's position in a natural grip, improves the straightness and vertical consistency of the trim line, and reduces the operating difficulties and safety risks caused by frequently looking down and back. The arrangement of the aforementioned indicator is based on a holistic design that takes into account the human field of vision, grip position, and the definition of the cutting plane's tilt axis.It is not a simple adaptation where the display element is arbitrarily mounted at any position on the housing.

[0047] According to the sixth aspect of the present invention, a trimming tool is provided, the trimming tool comprising the following: a housing to which a protective plate is attached; a cutting device and a drive device, both of which are arranged on the housing, wherein the cutting device has a cutting plane, and wherein the drive device is configured to drive the cutting device; a display device arranged on the guard plate, or the display device arranged on a housing located between the guard plate and the drive device; wherein the display device is configured to indicate the tilt state of the cutting plane relative to a reference plane; a level detection device arranged on the housing and configured to detect the tilt state of the cutting plane relative to the reference plane and output a detection signal; a control device which, based on the detection signal by comparison with a predetermined threshold, outputs a first signal and a second signal, wherein the first signal and the second signal indicate different operating states of the display device; wherein the control device controls the display device to display in its corresponding preset range according to the detection signal; where a line running along the longitudinal direction of the cutting plane and parallel to the reference plane is considered the tilting axis, and the tilting state describes a state in which the cutting plane is tilted about this tilting axis relative to the reference plane.

[0048] In this embodiment, the tilting state of the cutting plane relative to the reference plane can be displayed in real time and clearly in increments, thus reducing the operator's reliance on subjective assessment of the cutting position. This facilitates the rapid detection of tilt limit violations and timely correction for different working directions and viewing angles, thereby improving cutting safety and work consistency. Simultaneously, the display device is positioned either on the guard plate or within the housing area between the guard plate and the drive unit, ensuring both visibility and safety.This makes the display information easier to observe and less susceptible to obscuration by chips or collisions, which in turn reduces operator errors, lowers the risk of blockages and miscuts, and increases user-friendliness and ergonomic efficiency, especially for inexperienced users and those in complex working postures. It also reduces the risk of miscutting or repeated re-trimming due to inaccurate posture assessment.

[0049] According to the seventh aspect of the invention, a trimming tool is provided, wherein the trimming tool comprises the following: a housing comprising the following, wherein the first housing is provided with the first handle, wherein the second housing is provided with the second handle, and wherein the first housing moves relative to the second housing between a first position and a second position; a cutting device arranged on the housing, wherein the cutting device has a cutting plane; a display device arranged on the housing; wherein the display device is configured to indicate the tilt state of the cutting plane relative to a reference plane; and a control device arranged on the housing and configured such that in the first position the control device controls the display device to display the tilt state of the cutting plane relative to the reference plane in a first predefined area; wherein in a second position the control device controls the display device to display the tilt state of the cutting plane relative to the reference plane in a second predefined area.

[0050] By establishing a correspondence between the display area of ​​the display device and two positions of the first housing relative to the second housing, the display position of the tilt information can be automatically adjusted when the device body shape changes (for example, when changing the grip position or the relative rotation of the housing). This ensures that the tilt display is always within a predefined area that is easier to observe, thus reducing misinterpretations and delays due to changes in viewing angle, obstructions, or deviations in the line of sight.This improves the visibility and consistency of the display of the tilt state, making it easier for the operator to quickly correct the alignment of the cutting plane, reduce the risk of miscuts, increase occupational safety and cutting efficiency, and improve ergonomic adaptability under various operating conditions.

[0051] According to the eighth aspect of the invention, a trimming tool is provided, the trimming tool comprising the following: a housing comprising the following, wherein the first housing is provided with the first handle, wherein the second housing is provided with the second handle, and wherein the first housing moves relative to the second housing between a first position and a second position; a cutting device arranged on the housing, wherein the cutting device has a cutting plane; a display device arranged on the housing; wherein the display device is configured to indicate the tilt state of the cutting plane relative to a reference plane; and a control device which is arranged on the housing and configured to control the display device based on the tilt state of the cutting plane relative to the reference plane when the first housing is in the first position or the second position relative to the second housing.

[0052] The control unit regulates the display unit so that the tilt state, based on the cutting plane, is independent of the relative movement position of the first housing to the second housing (including any rotations or changes in orientation). This prevents display malfunctions, misalignment of the display, or inconsistencies in the display logic caused by changes in the relative positions of the device bodies. Thus, it is ensured that the display unit always shows the tilt state normally and continuously, regardless of the position of the first housing relative to the second housing.This improves the reliability and consistency of the tilt indicator, making it easier for the operator to quickly correct the cutting plane alignment, reducing the risk of miscuts, increasing work safety and trimming efficiency, and improving ergonomic adaptability under various operating conditions. Thus, the registration has the following beneficial effects: 1. By attaching a protective plate to the housing and positioning the display device at the front of the housing between the protective plate or the two handles (first and second handles), the display device is placed in the same front field of vision as the cutting plane. Combined with defining a straight line running along the longitudinal direction of the cutting plane and parallel to the reference plane as the tilt axis, the reference system for the tilt of the cutting plane is unified from both a structural and geometric perspective. This allows the tilt direction and angle of the cutting plane relative to the reference plane to be displayed directly in front of the operator, reducing the need for frequent looking down or back and contributing to improved consistency and safety during trimming operations. 2. By installing a level detection device and clearly defining the reference plane as the first and / or second reference plane, corresponding to the state in which the cutting plane is parallel to the horizontal plane or perpendicular to the horizontal plane, respectively, the assessment of the cutting plane's tilt is established on a uniform spatial reference basis. The level detection device detects the tilt state of the cutting plane relative to the reference plane in real time and outputs a detection signal. Based on this signal, the control unit directs the display device to show the information, thereby transforming the position assessment, which was originally based on experience, into objective sensor data and visual feedback. This reduces trimming errors caused by differences in operator experience, lighting conditions, and changing working conditions. 3. By arranging a first handle and a second handle, distributed at the front and rear of the housing, and by limiting the first angle between the display plane of the display device and the cutting plane, the tilt angle of the first handle relative to the reference plane, the second angle between the target plane and the cutting plane, the third angle between the first handle and the connecting line between the upper end of the protective plate, as well as the lateral fourth angle and other geometric parameter areas, the ratio between the width of the second handle and the width of the display device is simultaneously restricted, so that a coordinated human-machine arrangement between handle position, display position and cutting area is created.The aforementioned angle and distance parameters were not chosen arbitrarily, but are the result of optimization taking into account grip comfort, field of vision, protection requirements, and center of gravity stability. They ensure that, assuming stable tool handling, the display information is positioned in a clearly visible and not easily obscured location, thereby improving the ergonomic efficiency of the trimming process. 4. By installing a first and second connection wire, the signal chain between the level detection device, the control unit, and the indicator panel located in the center or side of the guard plate is segmented. This not only ensures a clear and interference-resistant transmission path for tilt and indicator signals but also allows for flexible and adaptable mounting positions for the indicator panel. This enables the same detection and control module to be reused across different machine types and guard plate designs, reducing wiring complexity and manufacturing costs. 5. By designing the display device as at least one or more groups of light panels and arranging multiple LED groups on the light panels, combined with the brightness level, light position, and / or color change of the LED groups to differentiate between various tilt directions and angle ranges, a greater amount of positional information can be displayed on a limited display area. This enables the operator to quickly and precisely recognize the tilt state of the current cutting plane within a short time, in order to adjust the position of the trimming tool accordingly and thus improve the straightness and height consistency of the trim lines. 6. A rotatable connection is provided between the first housing and the second housing, and a sensor device is arranged on the axis of rotation between them. This sensor device serves to detect information about the relative rotation of the first or second housing and to output a rotation signal. Based on this rotation signal, the control device controls the display devices arranged in the corresponding areas of the first handle and / or second handle for regional display, such that the rotational position of the first housing and the tilt state of the cutting plane about the tilt axis with respect to the reference plane form a unique correspondence. In contrast to solutions where the detection elements are arranged only at a fixed position on the housing, the present disclosure uses the operator's actual grip position on the second handle as a reference parameter for assessing the tilt.This allows for dynamic monitoring of the cutting plane and visual feedback, provided the structural complexity of the cutting device is not increased. This makes it easier for the operator to precisely control the cutting plane by fine-tuning the rotation angle of the first housing while maintaining a stable grip on the second handle. Illustration of the attached figures

[0053] The detailed description of an exemplary embodiment with reference to the accompanying figures makes the above-mentioned features and further advantages of the present invention more apparent. Fig. Figure 1 is a schematic overall structural view I of the trimming tool provided in the present invention. Fig. 2 is an enlarged view of A in Fig. 1. Fig. Figure 3 shows that the display plane of the display device forms a first angle with the cutting plane. Fig. Figure 4 schematically shows that the reference plane forms a second angle with the cutting plane. Fig. Figure 5 schematically shows that the plane formed by the connecting line between the upper end of the first handle and the upper end of the protective plate forms a third angle with the horizontal plane in which the upper end of the first handle is located. Fig. Figure 6 schematically shows that the plane formed by the connecting line between the lateral tip of the first handle and the lateral tip of the guard plate forms a fourth angle with the cutting plane. Fig. Figure 7 is a schematic representation of the widest width of the projection of the first handle and the widest width of the projection of the display device. Fig. Figure 8 is a schematic overall structural view II of the trimming tool provided in the present invention. Fig. Figure 9 is an enlarged view of B in Fig. 8. Fig. Figure 10 is a schematic representation of the viewing angle structure of the trimming tool provided in the present invention. Fig. 11 is an enlarged view of C in Fig. 10. Illustration description of the attached figures:

[0054] 1. Housing; 11. Protective plate; 111. First protective layer; 112. Second protective layer; 12. First handle; 121. Handle section; 13. Second handle; 14. First housing; 15. Second housing; 2. Cutting device; 3. Drive device; 31. Drive motor; 32. Drive base; 4. Display device; 41. Light plate; 411. LED group; 5. Level detection device; 6. First connecting wire; 7. Second connecting wire; 71. Third connecting wire; 72. Fourth connecting wire; 8. Control device; 81. First control board; 82. Second control board; 9. Sensor device; 10. Chip deflector; S0. Cutting plane; S1. First reference plane; S2. Second reference plane; S3. Display plane; S4. Target plane; R1. First angle; R2. Second angle; R3. Third angle; R4. Fourth angle; R5. Inclination angle; L1. First distance; L2. Second distance. Specific embodiments

[0055] The exemplary embodiment is described in more detail below with reference to the accompanying figures. However, the present embodiments can be implemented in a variety of ways and are not limited to those presented herein; rather, these embodiments serve to provide a comprehensive and complete overview of the present invention and to fully convey the conceptual foundations of the exemplary embodiments to those skilled in the field. Identical labels in the figure denote identical or similar structures, which is why their detailed description is omitted.

[0056] The features, structures, or properties described above can be combined in one or more embodiments in any suitable manner. Where possible, the features discussed in the individual embodiments are interchangeable. The above description provides numerous specific details to ensure a comprehensive understanding of the embodiments of this invention. However, those skilled in the art will recognize that the technical solutions described in this invention can also be achieved without one or more of the specific details mentioned, or that other methods, components, materials, etc., can be used. In other cases, generally known structures, materials, or processes are not presented or described in detail to avoid vagueness regarding the various aspects of this invention.

[0057] Although relative terms such as "top" and "bottom" are used in this invention to describe the relative position of one component of a symbol to another component, these terms serve in this application only for the sake of simplicity, for example, according to the orientation shown in the accompanying figures. It is understandable that if the device in the figure is turned upside down, the components previously described as "top" become "bottom." Other relative terms such as "high," "low," "above," "below," "front," "back," "left," and "right" also have similar meanings. When a structure is "on" another structure, this can mean that one structure is formed on top of the other structure, or that one structure is arranged "directly" against the other structure, or that one structure is arranged "indirectly" against the other structure via another structure.

[0058] In this invention, the terms “a”, “an”, “the”, “the”, and “at least one” are used to indicate the presence of one or more elements / components / etc.; the terms “comprise”, “include”, and “have” serve to denote open inclusion and mean that, in addition to the listed elements / components / etc., further elements / components / etc. may also be present.

[0059] To solve the problem that existing trimming tools cannot detect the tilting of the cutting plane of the cutting blade, the present invention provides a trimming tool.

[0060] The embodiment I of the present invention provides the following technical solution:

[0061] The trimming tool includes, with reference to Fig. 1, Fig. 2 and Fig. 3 a housing 1, a cutting device 2, a drive device 3 and a display device 4; a housing 1 on which a protective plate 11 is arranged; a cutting device 2 and a drive device 3, both of which are arranged on the housing 1, wherein the cutting device 2 has a cutting plane S0, wherein the drive device 3 is configured to operate the cutting device 2; a display device 4, which is arranged on the protective plate 11, wherein the display device 4 is configured to indicate a tilting state of the cutting plane S0 relative to a reference plane; wherein a line running along the longitudinal direction of the cutting plane S0 and parallel to the reference plane is considered the tilting axis, wherein the tilting state describes a state in which the cutting plane S0 is tilted about this tilting axis relative to the reference plane.

[0062] Trimming tools include, but are not limited to, pruning shears, lawn trimmers, and other tools with a cutting function. Pruning shears encompass both those that move back and forth along the length of the tool and those that can move sideways along the width of the tool.

[0063] The cutting plane S0 is the cutting motion plane that is formed during the cutting motion of the cutting device 2.

[0064] Furthermore, the cutting plane S0 is the plane of cutting motion during the execution of the cutting process by the cutting device, defined by the movement of the cutting edge; that is, the working plane in which a cutting action is exerted on the target branch during the trimming process. In some embodiments, the cutting device also typically has a first and second side surface arranged opposite each other (for example, an upper cutting edge surface and a lower cutting edge surface). The cutting plane S0 refers to the geometric plane formed by the cutting edge on the object to be cut during the actual cutting process, and not to any arbitrary structural surface of the cutting device body.

[0065] Due to the structural arrangement described above, the protective plate 11 serves both to physically protect the operator and as a mounting base for the display unit 4, thus integrating the protective and status indication functions. This reduces the need for additional brackets or exposed components and makes the structure more compact. Furthermore, a straight line running along the longitudinal direction of the cutting plane S0 and parallel to the reference plane is used as the tilting axis, limiting the tilting of the cutting plane S0 relative to the reference plane to a single degree of freedom about this tilting axis. This facilitates detection, calibration, and display by the display unit 4.Therefore, in this embodiment, the trimming tool can provide the operator with real-time and clear feedback on the tilting state of the cutting plane S0, ensuring operational safety, so that the operator can correct the trimming tool according to the display.

[0066] In some embodiments, when the display device 4 is mounted on the protective plate 11, the protective plate 11 can have different designs to accommodate various mounting methods and protection requirements. The protective plate 11 can have a single-layer or a double-layer structure.

[0067] In some embodiments, the protective plate 11 is a single-layer structure. The single-layer protective plate 11 can be integrally formed from a metal sheet or a sheet of engineering plastic, with the operator-facing side forming a mounting surface for the display unit 4. The display unit 4 can be attached directly to the mounting surface by screws, clamps, or adhesives. The connecting wires associated with the display unit 4 are guided through feedthroughs in the protective plate 11 or routed directly from the display unit 4 into the housing 1. The single-layer protective plate 11 is characterized by its simple design and lower manufacturing costs, is easy to machine and assemble, and is suitable for applications where space for mounting the display unit 4 is limited.

[0068] In other embodiments, the protective plate 11 consists of a double-layered structure. The double-layered protective plate 11 comprises a first protective layer 111 and a second protective layer 112, arranged sequentially along the forward and reverse directions of the trimming tool. The first protective layer 111 faces the cutting device 2, while the second protective layer 112 faces the operator. A gap is arranged between the first protective layer 111 and the second protective layer 112, forming a receiving space for the display device 4. The display device 4 is at least partially located within this receiving space.The display level S3 of the display device 4 is connected to the outside world via a window penetrating the second protective layer 112, allowing the operator to observe it; or the display level S3 of the display device 4 is connected to the outside world via a window between the first protective layer 111 and the second protective layer 112, allowing observation by the operator. The electrical connecting wires of the display device 4 are routed within the receiving space and lead from the double-layered protective plate into the interior of the housing 1. The double-layered protective plate 11 can, on the one hand, provide a mounting space for the display device 4 without significantly increasing the overall dimensions of the trimming tool.On the other hand, the first protective layer 111 blocks the splashes of fragments occurring during the cutting process and encloses and protects the display device 4 and its lines through the double-layered structure, thereby improving the protective function and the mounting stability of the display device 4.

[0069] It should be noted that the drive unit 3 and the cutting unit 2 can be based on various structural forms known to those skilled in the art, for example, cutting components consisting of a motor, drive elements and cutting blades, or cutting components driven by an internal combustion engine. These do not constitute a limiting specification of the present embodiment and are therefore not explained in further detail.

[0070] In some embodiments of this disclosure with reference to Fig. 1 and Fig. 3. A level detection device 5 is arranged on the trimming tool (in the housing 1) and a control device 8, wherein the level detection device 5 is electrically connected to the display device 4 and is configured to detect the tilt state of the cutting plane S0 relative to the reference plane and outputs a detection signal; wherein the control device 8 is configured to control the operating state of the display device 4 based on the detection signal; wherein the reference plane comprises a first reference plane S1 and / or a second reference plane S2 (see Fig. 5); wherein the first reference plane S1 is the plane in which the cutting plane S0 is located when the cutting plane S0 is parallel to the horizontal plane; wherein the second reference plane S2 is the plane in which the cutting plane S0 is located when the cutting plane S0 is perpendicular to the horizontal plane. The level detection device 5 is capable of monitoring the tilt state of the cutting plane S0 relative to the reference plane in real time (for example, this can include the exact tilt angle and tilt direction). This information is processed by the control device 8 and controls the display device 4, which is presented directly in front of the operator to help him immediately adjust the attitude of the trimming tool and thus ensure the precision of the cutting operation.

[0071] In some exemplary embodiments, the level detection device 5 may not be limited to gyroscopes or spirit levels, for example, MEMS gyroscopes (microelectromechanical system gyroscopes). The gyroscope is mounted at a position that has a specific geometric relationship to the cutting plane S0 in order to detect the change in position of the trimming tool in space and output a corresponding detection signal.

[0072] In some embodiments of this disclosure, the display device 4 comprises at least two groups of light plates 41; wherein at least two groups of light plates 41 are arranged on the protective plate 11, wherein the projections of any two groups of light plates 41 on the plane of the protective plate 11 enclose a predetermined angle to each other.

[0073] In one embodiment of this disclosure, the display device 4 comprises at least three groups of light plates 41; wherein at least three groups of light plates 41 are arranged on the protective plate 11, wherein a predetermined angle is formed between the projections of each of two groups of light plates 41 on the plane of the protective plate 11.

[0074] As an example, a group of light plates 41 can be arranged such that their plate surfaces are essentially horizontally oriented and function as horizontal light plates 41; another group of light plates 41 can be arranged such that their plate surfaces are essentially vertically oriented and function as vertical light plates 41. The vertical light plates 41 can be arranged on the left or right side of the horizontal light plates 41, such that an angle is formed between the projections of the horizontal light plates 41 and the vertical light plates 41 in the plane of the protective plate 11. This arrangement allows the horizontal light plate 41 to be used to represent the overall inclination of the cutting plane S0 relative to the reference plane, while the vertical light plate 41 serves to particularly emphasize the tilting tendency on one side.If a richer display effect is required, another group of vertical light panels 41 can be provided or added on the side opposite the vertical light panel 41 to form an arrangement of at least three groups of light panels 41. This allows the requirements for both a simplified structure and enhanced functionality to be met while maintaining the design at a predetermined angle.

[0075] As another example, the surface of one group of light panels 41 is essentially horizontally oriented, while the surfaces of the other two groups of light panels 41 are each essentially vertically oriented and arranged on the left and right sides of the horizontal light panel 41, such that a first predetermined angle (e.g., about 90°) is formed between the projection of any vertical light panel 41 and the horizontal light panel 41 on the plane of the protective panel 11, and a second predetermined angle (e.g., about 90°) is formed between the projections of the two vertical light panels 41 on the plane of the protective panel 11.In this embodiment, the horizontal light panel 41 can indicate whether the cutting plane S0 lies within the targeted horizontal neutral area relative to the reference plane; wherein the vertical light panels 41 on the left and right sides can each be used to indicate the tilting of the cutting plane S0 to the left or right as well as the degree of tilting, thus enabling a clear distinction between the tilting direction and the degree of tilting.

[0076] Furthermore, in this embodiment, the horizontal light plate 41 can also indicate the cutting plane S0 with respect to the reference plane, showing whether it is in the targeted neutral area, as well as the tilt position and the tilt dimension to the left or right; the left and right light plates can also indicate whether another reference plane is in the horizontal targeted neutral area, as well as the tilt position and the tilt dimension to the left or right.

[0077] In this embodiment, the horizontal light panel 41 arranged in the central area of ​​the protective plate 11 can be used to indicate whether the cutting plane S0 lies within the targeted horizontal neutral area relative to the first reference plane S1. The direction and extent of the tilt of the cutting plane S0 to the left or right are indicated by the combination of switching the LED groups 411 on and off, their positional distribution, and / or changes in brightness. The horizontal light panel 41 arranged in the central area of ​​the protective plate 11 can be used to indicate whether the cutting plane S0 lies within the targeted horizontal neutral area relative to the first reference plane S1 and the second reference plane S2.By combining the switching on and off of the LED groups 411 on the light plate 41, their position distribution and / or brightness changes, the neutral position, the tilting direction and the tilting extent of the cutting plane S0 to the left or right are displayed.

[0078] The light plates 41 arranged on both sides of the horizontal light plates 41 can each correspond to the left side of the second reference plane S2 and the right side of the second reference plane S2. They serve to indicate the direction of the cutting plane S0 relative to the respective corresponding reference planes, whether it is located in the horizontal neutral area of ​​the target reference plane or has a tilt to the left or right, and the tilt angle. The following applies: The greater the distance of the illuminated LED group 411 from the central reference position of the same light plate 41 and / or the higher its brightness, the greater the tilt angle of the corresponding cutting plane S0 relative to the respective reference plane (first reference plane S1 or second reference plane S2).

[0079] For example, in an exemplary arrangement, the left light panel 41 of the guard panel 11 can be used to indicate the tilt state of the cutting plane S0 relative to the left direction of the second reference plane S2, while the right light panel 41 of the guard panel 11 serves to indicate the tilt state of the cutting plane S0 relative to the right direction of the second reference plane S2: If the cutting plane S0 deflects to the left relative to the left direction of the second reference plane S2, the left LED group 411 on the left light panel 41 is switched on or illuminated with higher brightness; if the cutting plane S0 returns to the horizontal neutral area of ​​the target reference plane near the second reference plane S2, the middle LED group 411 of the left light panel 41 is continuously illuminated or displays a predefined color;If the cutting plane S0 deviates relative to the right direction of the second reference plane S2, this is indicated by different positions, brightness levels, and / or colors of the LED group 411 on the right light panel 41. Alternatively, the left light panel 41 can be configured to indicate the tilt state of the cutting plane S0 relative to the second reference plane S2, while the right light panel 41 represents the tilt state of the cutting plane S0 relative to the first reference plane S1. The tilt information corresponding to the first reference planes S1 and second reference planes S2 is differentiated by variations in color, brightness, and / or flashing mode of the LED groups 411 to accommodate different product designs and user preferences.

[0080] In another example, the right light panel 41 can be configured to indicate the tilt state of the cutting plane S0 relative to the second reference plane S2, while the left light panel 41 represents the tilt state of the cutting plane S0 relative to the first reference plane S1. The tilt information corresponding to the first reference planes S1 and second reference planes S2 is differentiated by differences in color, brightness, and / or flashing mode of the LED groups 411 to accommodate different product designs and user preferences. Of course, another example exists where the horizontal light panel 41, located in the center of the guard plate 11, can simultaneously be used to indicate whether the cutting plane S0 lies within the targeted horizontal neutral range relative to both the first reference plane S1 and the second reference plane S2.If the cutting plane S0 is located within the neutral area relative to the first reference plane S1, the central LED group 411 of the horizontal light panel 41 illuminates at high intensity. If it deviates to the left relative to the first reference plane S1, the LED group 411 belonging to the left side of the horizontal light panel 41 is activated or illuminated at a higher brightness. If the alignment deviates to the right relative to the first reference plane S1, the right-facing LED group 411 located in the center of the horizontal light panel 41 is switched on or illuminated at a higher brightness. If the cutting plane S0 is located within the horizontal neutral area of ​​the target reference plane near the second reference plane S2, the horizontal light panel 41 illuminates continuously or displays a predefined color relative to the LED lamp bead group or LED group 411 located further to the left in the central area.In this case, the LED lamps located further to the left serve as indicator LED lamps for the horizontal neutral area. These indicator LED lamps act as a reference, with LED lamps on the left and right sides that can indicate a tilt of the cutting plane to the left or right of the second reference plane. If the cutting plane S0 deflects to the right relative to the second reference plane S2, the horizontal light plate 41 illuminates continuously or displays a predefined color relative to the LED group 411 located further to the right in the central area. In this case, the LED lamps located further to the right serve as indicator LED lamps for the neutral area.These indicator LED lamp beads act as a reference, with corresponding LED lamp beads on the left and right sides that can indicate a tilt of the cutting plane to the left or right side of the second reference plane.

[0081] It should also be noted that in the present disclosure, the determination of the directional terms "left" and "right" is always based on the operator's position: If the operator holds the handle of the trimming tool in the normal manner and the cutting plane S0 is oriented towards the front of the operator, the operator's left side corresponds to the left side of the trimming tool, and the operator's right side corresponds to the right side of the trimming tool. These directional terms serve solely to simplify the description of the relative positions of the individual components and do not constitute a limitation of the scope of protection of the present disclosure.

[0082] In some embodiments of this disclosure, the display device 4 comprises, with reference to Fig. 2. At least two groups of light panels 41; wherein at least two groups of light panels 41 are arranged on the protective plate 11, the projections of any two groups of light panels 41 being parallel to each other on the plane of the protective plate 11. By arranging at least two groups of light panels 41 on the protective plate 11 and projecting them parallel to each other on the plane of the protective plate 11, each light panel 41 can be arranged along the same reference direction, thus standardizing the reading direction of the display information. The operator only needs to observe the changes of different light panels 41 or different display areas of the same light panel 41 in a single direction to assess the tilt of the cutting plane S0 relative to the reference plane.This reduces visual strain and increases the clarity and readability of the displayed information. Furthermore, the parallel arrangement of the two groups of light panels 41 allows for a more uniform overall arrangement of the display unit 4 on the protective plate 11, which facilitates consistent wiring planning and simplifies the subsequent addition or reduction of the number of light panels 41 for functional expansion. At the same time, mutual shadowing between the light panels 41 is reduced, thereby improving the compactness and aesthetics of the structure. Thus, while ensuring display functionality, both ease of manufacturing and assembly, as well as product design consistency, are taken into account.

[0083] In some embodiments of this disclosure, the display device 4 comprises at least two groups of light panels 41; wherein, in two adjacent groups of light panels 41, the output terminals of one group of light panels 41 are each electrically connected to the input terminals of the other group of light panels 41. By connecting the output terminals of one group of light panels 41 in two adjacent groups of light panels 41 in series or cascade with the input terminals of the other group of light panels 41, multiple control of several groups of light panels 41 via the same control channel can be achieved. This reduces the number of independent connections between the light panels 41 and the control device 8, as well as the number of control terminals, thereby reducing the complexity of the circuit wiring and the cost of the control circuit.

[0084] In some embodiments of this disclosure, reference is made to Fig. 1 and Fig. 3 a first handle 12 and a second handle 13 are arranged on the housing 1; wherein the first handle 12 is arranged at the end of the housing 1 closest to the cutting device 2 and the protective plate 11; wherein the second handle 13 is arranged at the end of the housing 1 furthest from the cutting device 2 and the protective plate 11; wherein the display plane S3 of the display device 4 forms a first angle R1 with the cutting plane S0; wherein the first angle R1 is greater than or equal to 20° and less than 90°.

[0085] The arrangement described above allows the operator to achieve precise guidance and stable support at the end closer to the cutting device 2 when gripping the first handle 12 and the second handle 13. Furthermore, the grip at the end furthest from the cutting device 2 increases overall operational stability, thus reducing the wobbling and distraction caused by one-handed gripping. Simultaneously, the display plane S3 of the display device 4 forms a first angle R1 relative to the cutting plane S0, so that the display information is inclined towards the operator's line of sight.This allows the operator to immediately perceive the tilt information of the cutting plane S0 relative to the reference plane while maintaining a secure standing position and a normal grip posture, thereby improving the safety and precision of the cutting operation and reducing visual fatigue and wrist strain during extended use.

[0086] In some embodiments, the first angle R1 can be optimized according to the application as well as the operator's height and grip position. For example, the first angle R1 can be between 20° and 30° to adapt to machining situations requiring close proximity to the workpiece and a lower viewing angle; in other embodiments, the first angle R1 can be between 30° and 60°, so that the display plane S3 has a significantly greater angle of inclination relative to the cutting plane S0, making it easier for the operator to view the display information from above while standing upright; furthermore, in another embodiment, the first angle R1 can be between 60° and 80° to ensure that the display information of the display device 4 can be clearly read even when maintaining a greater safety distance or when using the tool in an inclined position.

[0087] It should be understood that the specific value of the first angle R1 is not limited to the typical angles mentioned above. As long as the first angle R1 is in the range of greater than or equal to 20° and less than 90° and ensures that the display plane S3 of the display device 4 is not obscured by the protective plate 11, the handle, or the operator's hand, so that the operator can comfortably view the display information in a normal grip position, this is considered to be within the scope of protection of this application. In other embodiments, the first angle R1 can be a fixed angle or can be adjusted within a specified range by an adjustable structure to accommodate different cutting positions and operating environments, thus further improving the versatility and comfort of the trimming tool.

[0088] Furthermore, in this embodiment, if the first angle R1 is less than 20°, the display plane S3 is too close to the cutting plane S0, making it easily obscured by the cutting blade, the guard plate 11, or the trimmed plants. Additionally, the user must view the display information within a very narrow viewing angle, making it difficult to see. If the first angle R1 is greater than 90°, the display plane S3 tends to be oriented away from the operator or too vertically. The operator must significantly rotate their wrist or raise their head sharply and look upwards to see the display information, which can easily lead to operator fatigue and increases the safety risk. Therefore, the first angle R1 is limited to a range of 20° to 90° so that the display plane S3 is both avoided being obscured and remains clearly visible in a natural grip position.This achieves a suitable balance between visibility, obscuration, and grip comfort. This parameter range was specifically defined to achieve the aforementioned comprehensive technical effects and does not represent a conventional adjustment for optical design or to facilitate mounting by changing the angle of the display plane S3.

[0089] It should be noted that the "display level S3 of the display device 4" refers to the geometric plane on which, in the assembled state of the display device 4, the visible area is located that displays light signals and / or graphic and textual information to the operator. In particular, if the display device 4 comprises a light panel 41 and several LED lamp beads arranged on the light panel 41, the display level S3 is the plane of the light panel 41 facing the operator; if the display device 4 also includes a translucent cover, the display level S3 can be the geometric plane of the translucent cover that corresponds to the area facing the operator and used to display information.

[0090] In some further embodiments of the present disclosure with reference to Fig. 5 forms a reference plane (the second reference plane S2) that is perpendicular to the cutting plane S0 and has an inclination angle R5 with its cross-section running along the longitudinal direction of the first handle 12; the inclination angle R5 lies in the range of 0° to 15°. The slight inclination of the first handle 12 within this range allows the operator to position their forearm and wrist closer to a neutral position when using a normal grip. This reduces wrist twisting and flexion, thereby decreasing continuous strain on the wrist and forearm muscles. Simultaneously, this arrangement promotes the formation of a stable force triangle during two-handed operation, improving the guidance and control of the trimming tool. This optimizes ergonomics while maintaining cutting accuracy and reduces fatigue during extended use.

[0091] For example, the first handle 12 forms an angle of inclination R5 relative to the reference plane (second reference plane S2), which is perpendicular to the cutting plane S0; the angle of inclination R5 can be between 0° and 5°, with the first handle 12 being arranged substantially perpendicular to the cutting plane S0, which is better suited for coarse trimming operations with higher push and pull forces required. In other embodiments, the angle of inclination R5 can be between 5° and 10°, with the first handle 12 having a moderate inclination relative to the reference plane, which helps to reduce lateral tilting of the wrist while ensuring smoothness of the force transmission path during pushing and pulling.In another embodiment, the tilt angle R5 can be between 10° and 15°, which is better suited for applications requiring precise guidance and light pressure during cutting; this ensures the stability of the handle and allows the operator to make fine adjustments.

[0092] It should be noted that if the tilt angle R5 of the first handle 12 is less than 0°, that is, if the first handle 12 tilts relative to the reference plane towards the side facing away from the operator, this can easily lead to unfavorable lateral tilting and twisting of the operator's wrist, resulting in an unnatural grip and making prolonged, continuous operation difficult. If the tilt angle R5 of the first handle 12 is greater than 15°, the first handle 12 tilts excessively to the side of the operator, increasing the rotation angle of the forearm and the elevation angle of the shoulder, thereby increasing muscle tension and potentially reducing stability during high-thrust operations. The present application limits the tilt angle R5 of the first handle 12 to a range of 0° to 15°.This limitation represents a balanced decision, made after comprehensive consideration of the operator's ergonomic characteristics, typical working postures, and the operating stability of the trimming tools, taking into account both grip comfort and operational safety and controllability.

[0093] In some embodiments of this disclosure, with reference to Fig. 4 The display device 4 has a reference plane S4 near the lower end of the housing 1 and the upper end of the grip section 121 of the first handle 12, wherein a second angle R2 is set between the reference plane S4 and the cutting plane S0, the second angle R2 being between 0° and 90°. The above arrangement allows the relative height and spatial relationship between the display device 4 and the first handle 12 to be limited in the longitudinal direction of the tool, so that the operator can more easily direct their gaze to the area of ​​the display device 4 when holding the first handle 12 normally. This makes it possible to intuitively perceive the tilt state of the cutting plane S0 relative to the reference plane without significantly changing the existing grip position.At the same time, limiting the angular range between the reference plane S4 and the cutting plane S0 helps to ensure the visibility of the display information while also taking into account the compactness of the overall structure and the arrangement flexibility of the internal components within housing 1. This improves the ergonomic performance of the entire system and its structural utilization.

[0094] For example, the second angle R2 can be between 0° and 30°, with the reference plane S4 positioned almost parallel to the cutting plane S0. This is suitable for scenarios where the tool is used in a lower position close to the workpiece surface for push and pull cutting operations. The operator can view the display information by slightly lowering their head. In other embodiments, the second angle R2 can be between 30° and 60°, with the reference plane S4 having a medium angle of inclination relative to the cutting plane S0. This is suitable for most common upright positions, as it ensures good visibility while providing stable support for the tool in both forward and reverse directions. In a further embodiment, the second angle R2 can be between 60° and 90°, with the reference plane S4 being almost perpendicular to the cutting plane S0.This makes it easier to clearly see the display information of display device 4 when the operator maintains a greater safety distance and views the tool from the side and above.

[0095] It should be noted that if the second angle R2 is too small, approaching 0°, the reference plane S4 almost coincides with the cutting plane S0. In this case, the distance of the display device 4 relative to the first handle 12 is insufficient in both height and forward / backward directions, meaning it is easily obscured by the plant being cut or the user's hand. Furthermore, this is unfavorable for ensuring sufficient mounting and visibility of the display device 4. Conversely, if the second angle R2 is too large, approaching or exceeding 90°, the reference plane S4 is raised too high relative to the cutting plane S0. This results in excessive height difference and forward / backward displacement of the display device 4 relative to the first handle 12.This not only raises the center of gravity at the front, thus reducing the overall stability of the device during trimming, but can also obstruct the user's view of the area in front of them and the cutting area. Therefore, the second angle, R2, is limited to a range of 0° to 90° to ensure that the display unit 4 has adequate height and visibility while avoiding an excessively high center of gravity and restricted visibility. This achieves a reasonable balance between the field of view, obstruction ratios, and the overall stability of the device. This parameter range was specifically defined to achieve the aforementioned comprehensive technical effects and is not a simple adjustment for design or ease of assembly reasons.

[0096] In some embodiments of this disclosure, with reference to Fig. 5. The plane formed by the line connecting the upper end of the first handle 12 and the upper end of the protective plate 11 forms a third angle R3 with the horizontal plane in which the upper end of the first handle 12 is located; the third angle R3 being between 10° and 45°. By limiting the third angle R3, the spatial position of the protective plate 11 relative to the first handle 12, in terms of height and front / back position, can be appropriately determined. This ensures that the protective plate 11 provides protection and shielding to the operator without excessively raising or lowering its upper end, which could obstruct the operator's line of sight.Simultaneously, a specific upward angle is created between the upper end of the protective plate 11 and the upper end of the first handle 12, which helps to prevent splashing particles and rebounding materials from entering the safety zone during the trimming process. Combined with an ergonomically designed handle height and viewing direction, this increases safety and comfort when using the tool.

[0097] For example, the third angle R3 can be between 10° and 20°, with the upper end of the guard plate 11 being slightly raised relative to the upper end of the first handle 12. This is suitable for working conditions that mainly require rough cutting using push and pull methods and demand a wider field of vision. In other embodiments, the third angle R3 can be between 20° and 30°, with the upper end of the guard plate 11 exhibiting a moderate tilt in height and position relative to the upper end of the first handle 12. This is better suited for precise cutting work in most common standing working positions, as it provides both effective protection and improved visibility. In a further embodiment, the third angle R3 can be between 30° and 45°, with the upper end of the guard plate 11 being significantly raised relative to the upper end of the first handle 12.This is particularly advantageous in scenarios with increased splash protection requirements or when an increased safety distance is needed to improve the protection of the operator's face and upper limbs.

[0098] In particular, if the third angle R3 is less than 10°, the height difference between the upper end of the first handle 12 and the upper end of the protective plate 11 is small. The protective plate 11 sits too close to the upper end of the first handle 12, preventing the display 4 from being clearly visible in the vertical direction. This means that the display is easily obscured by the hand, the user's arm, or the front parts of the plant during trimming, making it difficult to see the display information clearly and in a timely manner. At the same time, the protective effect of the protective plate 11 against splashing particles is also relatively weakened. If the third angle R3 is greater than 45°, the protective plate 11 is raised too high relative to the upper end of the first handle 12, causing the front structure to protrude significantly in the vertical direction.This not only raises the center of gravity at the front and impairs the stability of the trimming tool during forward and backward movements, but can also obstruct the user's view of the area in front and the cutting area, making operation more difficult and increasing safety risks. Therefore, the range of values ​​for the third angle, R3, is limited to 10° to 45°, ensuring a suitable height difference between the protective plate 11 and the top of the first handle 12. This positions the display device 4 in a relatively prominent and easily visible position for the user when gripping the first handle 12, thus ensuring the readability of the display information while also providing protection and maintaining the overall stability of the device.This angular range is based on a comprehensive consideration of protective performance, field of view, and overall structural coordination, and represents a defined parameter limit. It is not a simple, regular adjustment made by raising or lowering the protective plate 11 to adapt to the appearance of different models.

[0099] In some embodiments of this disclosure, with reference to Fig. 6. The plane formed by the line connecting the lateral tip of the first handle 12 and the lateral tip of the guard plate 11 forms a fourth angle R4 with the reference plane perpendicular to the cutting plane S0 (the second reference plane S2); the fourth angle R4 lies between 0° and 35°. By limiting the fourth angle R4, the relative height and displacement between the first handle 12 and the guard plate 11 in the lateral tool profile can be restricted, so that the guard plate 11 forms an effective lateral cover zone in the lateral area of ​​the tool, which serves to catch chips splashing laterally along the cutting plane S0.On the other hand, this prevents the lateral area of ​​the protective plate 11 from extending excessively outwards or inwards relative to the lateral area of ​​the first handle 12, so that no significant lateral interference or pinching occurs when the operator holds the first handle 12 normally. This simultaneously improves grip comfort and ergonomic properties while improving lateral protection.

[0100] For example, the fourth angle R4 can be between 0° and 10°, with the plane defined by the connection of the lateral tips of the first handle 12 and the guard plate 11 having only a slight inclination relative to the cutting plane S0. This is suitable for applications where the lateral profile of the entire device must be compact and helps to reduce the lateral footprint of the tool. In other embodiments, the fourth angle R4 can be between 10° and 25°, with the lateral area of ​​the guard plate 11 forming a moderate angle of inclination relative to the cutting plane S0. This ensures both effective lateral shielding and visibility of the cutting area to the operator from various standing angles and is therefore better suited to most conventional trimming positions.In another embodiment, the fourth angle R4 can be between 25° and 35°, with the lateral area of ​​the protective plate 11 being inclined more steeply relative to the cutting plane S0. This is particularly advantageous in scenarios requiring significant splash protection or when an increased lateral safety distance of the tool is needed to better protect the side of the operator's body.

[0101] In particular, when the fourth angle R4 approaches or even tends towards 0°, the plane passing through the connection of the lateral tips of the first handle 12 and the guard plate 11 is almost parallel to the cutting plane S0. The lateral displacement of the guard plate 11 relative to the first handle 12 is small, making it easier for the display device 4 to be obscured by the user's hand, forearm, or the side of the housing 1. This results in insufficient lateral visibility, making it difficult for the user to perceive the display information in a timely manner when using a conventional grip. When the fourth angle R4 is greater than 35°, the lateral relative displacement between the first handle 12 and the guard plate 11 is greater. The guard plate 11 and the display device 4 together deflect significantly to the side, causing the trimming tool to experience a considerable bending moment under lateral load.This reduces the stability of the entire device during lateral vibrations or sudden lateral impacts. At the same time, the display unit 4 can be deflected forward out of the user's direct field of vision, impairing actual observation.

[0102] In some embodiments of this disclosure, with reference to Fig. 7 the widest distance of the projection of the first handle 12 on the projection plane, which is perpendicular to the cutting plane S0, is the first distance L1; wherein the widest distance of the projection of the display device 4 is the second distance L2; wherein the range of values ​​of the first distance L1 is between 190 mm and 250 mm; wherein the range of values ​​of the second distance L2 is between 100 mm and 250 mm, wherein the ratio between the first distance L1 and the second distance L2 is between 1:1 and 1:2.5.By limiting the maximum distance between the first handle 12 and the display unit 4 in the projection plane perpendicular to the cutting plane S0 within the aforementioned area, and by restricting the ratio between the two, it is ensured, on the one hand, that the first handle 12 has sufficient grip width, thus providing the operator with stable support and adequate force distribution when gripping with both sides; on the other hand, the width of the display unit 4 in the projection plane is adapted to the first handle 12 so that it is neither too narrow, which would result in an excessively small display area and poor readability, nor too wide, which would occupy too much lateral space within the housing 1. This achieves a balanced relationship between grip comfort, a compact overall structure, and the visibility of the display information.

[0103] For example, in some embodiments the first distance L1 can be set to approximately 200 mm and the second distance L2 also to approximately 200 mm, the ratio of the two being approximately 1:1, which contributes to the formation of a harmonious, integrated appearance on the side surface of the housing 1; in other embodiments the first distance L1 can be approximately 220 mm and the second distance L2 approximately 240 mm, the ratio being approximately 1:1.1, which contributes to slightly increasing the display width of the display device 4 while maintaining a balanced relationship to the width of the second handle 13; furthermore, in another embodiment the first distance L1 can be approximately 190 mm and the second distance L2 approximately 250 mm, the ratio being approximately 1:1.32, thereby giving the display device 4 a greater display width to improve visibility under complex operating conditions.

[0104] By way of example, a first handle 12 and a second handle 13 are arranged on the housing 1; wherein the first handle 12 is arranged at the end of the housing 1 closest to the cutting device 2 and the protective plate 11; wherein the second handle 13 is arranged at the end of the housing 1 furthest from the cutting device 2 and the protective plate 11; wherein the display plane S3 of the display device 4 forms a first angle R1 with the cutting plane S0; wherein the first angle R1 is greater than or equal to 20° and less than 90°; and / or the inclination angle of the first handle 12 relative to the reference plane, which is perpendicular to the cutting plane S0, is in the range of 0° to 15°; and / or the display device 4 forms a predefined plane S4 near the lower end of the housing 1 and the upper end of the handle section 121 of the first handle 12, wherein a second angle R2 is set between the predefined plane S4 and the cutting plane S0, wherein the second angle R2 is between 0° and 90°;and / or the plane formed by the line connecting the upper end of the first handle 12 and the upper end of the protective plate 11 forms a third angle R3 with the horizontal plane in which the upper end of the first handle 12 is located; wherein the third angle R3 lies between 10° and 45°; and / or the plane formed by the line connecting the lateral tip of the first handle 12 and the lateral tip of the protective plate 11 forms a fourth angle R4 with the cutting plane S0; wherein the fourth angle R4 lies between 0° and 35°; and / or the widest distance of the projection of the first handle 12 on the projection plane perpendicular to the cutting plane S0 is considered the first distance L1; wherein the widest distance of the projection of the display device 4 is considered the second distance L2; wherein the range of values ​​for the first distance L1 is between 190 mm and 250 mm;where the range of values ​​for the second distance L2 is between 100 mm and 250 mm, and the ratio between the first distance L1 and the second distance L2 is between 1:1 and 1:2.5.

[0105] In some embodiments of this disclosure with reference to Fig. 3 The trimming tool comprises a first connecting wire 6 and a second connecting wire 7, wherein the first connecting wire 6 is electrically connected at one end to the level detection device 5, the first connecting wire 6 being configured to transmit the tilt signal of the cutting plane S0 relative to the reference plane detected by the level detection device 5; wherein the control device 8 is electrically connected to the other end of the first connecting wire 6 and is configured to output a display signal based on the tilt signal; wherein the second connecting wire 7 is electrically connected at one end to the control device 8, the other end of the second connecting wire 7 extending into the central area of ​​the guard plate 11 and being electrically connected to the input terminal of any group of light plates 41;or, wherein the other end of the second connecting wire 7 extends into the lateral area of ​​the protective plate 11 and is electrically connected to the input terminal of any group of light panels 41; wherein the second connecting wire 7 is configured to load the display signal onto the light panel 41. By using the above-mentioned wiring method with the first connecting wire 6 and the second connecting wire 7, a reliable electrical connection between the level detection device 5, the control device 8, and the light panel 41 on the protective plate 11 can be achieved while maintaining a compact structure. On the one hand, the first connecting wire 6 directly transmits the tilt signal of the cutting plane S0 relative to the reference plane between the level detection device 5 and the control device 8, thus clearly defining the signal path;On the other hand, the second connecting wire 7 is routed from the control unit 8 and extends to the central or lateral area of ​​the protective plate 11, where it is electrically connected to the input terminal of any group of light panels 41. This provides a degree of flexibility to the mounting position of the light panel 41, allowing for flexible adaptation of the wiring path according to the arrangement of the internal components of the housing 1 and the structural shape of the protective plate 11. This reduces the cable length, bypasses moving parts such as the cutting device 2 and areas susceptible to interference, and thus improves the safety and interference immunity of the wiring.

[0106] Furthermore, the second connecting wire 7 can preferably be arranged on the inside of the housing 1 or the protective plate 11 to reduce cable exposure and thus decrease the risk of accidental snagging, abrasion, or cutting. This increases the reliability of the entire device, facilitates assembly, and improves ease of maintenance during subsequent operation.

[0107] In some embodiments of this disclosure, several LED groups 411 are arranged on the light panel 41; the operating state of the display device 4 includes the brightness level and / or the illumination position of the LED group 411 and / or the display color of the LED group 411. By controlling the combination of switching on and off, brightness levels, and color changes of the various LED groups 411, a variety of information can be displayed within a limited display area, such as the tilting direction of the cutting plane S0, the tilting angle, and whether the specified safety zone has been exceeded. This improves the readability and information capacity of the display device 4.

[0108] In particular, the tilt angle of the cutting plane S0 can be represented, for example, by different brightness levels of the LED lamp beads within the LED group 411. For example, an LED lamp bead group 411 can comprise at least three LED lamp beads, namely the first LED lamp bead, the second LED lamp bead, and the third LED lamp bead: If the tilt angle of the cutting plane S0 is small, only the first LED lamp bead illuminates, or it illuminates at a low brightness to indicate a small tilt that is within the safe range; if the tilt angle of the cutting plane S0 increases further, the first and second LED lamp beads illuminate simultaneously, or the second LED lamp bead illuminates more brightly than the first to indicate a medium tilt angle that requires the operator's attention;When the tilt angle of the cutting plane S0 reaches a large range, the first, second, and third LEDs illuminate simultaneously, or the third LED illuminates at high brightness or flashes to indicate a large tilt angle close to the permissible upper limit and to remind the operator to adjust in time or stop work. It may also include the following: if the cutting plane S0 is not tilted, the first LED illuminates; if the cutting plane S0 tilts to the left, the second LED illuminates, with the brightness of the second LED increasing or its color changing (for example, from yellow to red) as the tilt angle increases.When the cutting plane S0 is tilted to the right, the third LED bead illuminates, with the luminous intensity of the third LED bead increasing or its color changing (for example, from yellow to red) as the tilt angle increases. The first LED bead can also be positioned between the second and third LED beads. It should be noted that the aforementioned number of LED beads, the switching-on sequence, and the type of brightness change can be adjusted according to actual requirements and therefore do not constitute a limitation of the scope of protection of this disclosure.

[0109] As another example, the tilt angle of the cutting plane S0 can be represented by different illumination positions of the LED lamp beads within the LED group 411. For example, an LED group 411 can comprise at least three LED lamp beads in the specified direction, namely the first LED lamp bead, the second LED lamp bead, and the third LED lamp bead: If the tilt angle of the cutting plane S0 is small, only the first LED lamp bead, near the specified reference position, illuminates to indicate a small tilt that is within the safe range; if the tilt angle of the cutting plane S0 increases further, the first LED lamp bead goes out, and only the second LED lamp bead, in the middle position, illuminates to indicate a medium tilt angle that requires the operator's attention;When the tilt angle of the cutting plane S0 reaches a large range, only the third LED bead furthest from the reference position illuminates, and / or the third LED bead flashes to indicate a large tilt angle and remind the operator to adjust in time or stop work. It should be noted that the aforementioned number of LED bead beads, their arrangement, and the illumination positions represented by different tilt angles can be adjusted according to actual requirements. For example, a more finely subdivided tilt range can also be represented by simultaneously illuminating two or more LED bead beads in different positions, without thereby limiting the scope of protection of this disclosure.

[0110] As another example, the tilt angle of the cutting plane S0 can be represented by the indicator colors of the LED lamps within the LED lamp bead group or LED group 411. For example, an LED group 411 can comprise at least three LED lamps: the first LED lamp bead, the second LED lamp bead, and the third LED lamp bead. If the tilt angle of the cutting plane S0 is small, the first LED lamp bead illuminates with the first color, such as green, to indicate a small tilt that is within a safe range. If the tilt angle of the cutting plane S0 increases further, the second LED lamp bead illuminates with the second color, such as yellow, to indicate a medium tilt angle that requires operator attention. If the tilt angle of the cutting plane S0 reaches a large range, the third LED lamp bead illuminates with the third color, such as...Red, and / or flashing red, to indicate a large tilt angle and to remind the operator to adjust in time or stop work. It should be noted that the first, second, and third colors are not limited to the examples of green, yellow, and red mentioned above, but any easily distinguishable color combinations may be used as needed. This does not constitute a limitation of the scope of protection of this disclosure.

[0111] The explanation is given using the example of the display device 4, which comprises only a light panel 41. The light panel 41 is arranged on the protective plate 11 and preferably in a position that is easily visible to the operator when holding the first handle 12 and the second handle 13 in a normal position. Along the longitudinal direction of the light panel 41, the first, second, and third LED lamps are arranged sequentially, forming the first preset area for displaying the tilt state of the cutting plane So. The level detection device 5 is configured to detect the tilt angle of the cutting plane S0 relative to the reference plane and output the measured value.The control unit 8 controls the lighting combination of the three LED lamp beads in the first preset area based on the measured value, in order to realize a graduated display of different tilt angles on the same light plate 41.

[0112] In particular, by specifying one or more limit values ​​for the tilt angle of the cutting plane S0, the tilt angle can be divided into three ranges: small tilt, medium tilt, and large tilt. For example, if the value measured by the level detection device 5 corresponds to a small tilt angle, approximately within a range of...At 5°, only the first LED bead illuminates and / or illuminates at a lower brightness as a first signal to indicate that the cutting plane S0 is in the substantially safe range; if the tilt angle increases further, for example in the middle range of approximately 5° to 15°, the first and second LED bead illuminate simultaneously and / or the second LED bead is brighter than the first LED bead, as a second signal to indicate that the tilt angle has increased significantly and the operator needs to make an adjustment; if the tilt angle increases over a larger range, for example over approximatelyAt 15°, the first, second, and third LED beads illuminate simultaneously, and / or the third LED bead is displayed at high brightness or flashing as a third signal to indicate that the tilt angle is large and the operator should make an adjustment or stop work in a timely manner. It should be noted that the aforementioned values ​​of approximately 5° and approximately 15° are to be understood as exemplary settings. The angle changes can, but do not necessarily, increase or decrease in arithmetic progression, in geometric progression, or increase or decrease irregularly. No specific restriction is imposed here. In practical application, the individual limit angles and the corresponding combinations of illuminated LED beads can be adjusted depending on the structure size of the respective tool, the application scenario, and safety requirements.As long as the brightness level of the LED groups 411 on the same light panel 41 provides graduated feedback on the size of the tilt angle, this falls within the scope of protection of this disclosure.

[0113] For example, in one embodiment, the horizontal light plate 41 arranged in the central region of the protective plate 11 can be used to indicate the tilt angle of the cutting plane S0 relative to the first reference plane S1. When the measured value of the level detection device 5 corresponds to the tilt angle of the cutting plane S0 relative to the first reference plane S1, the three LED lamp beads on the horizontal light plate 41 can light up sequentially according to the aforementioned limit values ​​of approximately 5° and approximately 15°: If the tilt angle is within approximately 5°, only the first LED lamp bead near the center of the light plate lights up, indicating that the cutting plane S0 is located in the targeted horizontal neutral range relative to the first reference plane S1;If the tilt angle is between approximately 5° and 15°, the first and second LED lamps illuminate simultaneously, with the brightness of the second LED lamp being higher than that of the first LED lamp to indicate that the tilt angle relative to the first reference plane S1 has increased significantly; if the tilt angle is greater than approximately 15°, the first, second, and third LED lamps illuminate together, with the third LED lamp being displayed at high brightness or flashing to indicate a larger tilt angle of the cutting plane S0 relative to the first reference plane S1.

[0114] In another embodiment, the lateral light plate 41, which is arranged on the left or right side of the protective plate 11, can be used to indicate the tilting state of the cutting plane S0 relative to the second reference plane S2.When the measured value of the level detection device 5 corresponds to the tilt angle of the cutting plane S0 relative to the second reference plane S2, the LED lamp beads on the side light plate 41 are also illuminated in stages according to the limit values ​​of approximately 5° and approximately 15°: At a small tilt angle relative to the second reference plane S2, only one LED lamp bead near the center of the light plate illuminates, indicating that the tilt is within the permissible range; at a medium tilt angle, two LED lamp beads on the side closest to the tilt direction illuminate sequentially or more intensely; if the tilt angle exceeds a larger threshold, several LED lamp beads on the side closest to the tilt direction illuminate simultaneously at high brightness or flashing to indicate that the tilt of the cutting plane S0 relative to the second reference plane S2 has exceeded the recommended range.To better distinguish the different reference planes, in some embodiments the light panel 41 for displaying the first reference plane S1 can be designed in a first color or with a first flashing pattern, while the light panel 41 for displaying the second reference plane S2 uses a different color or flashing pattern. This allows the operator to clearly distinguish the tilt information of the cutting plane S0 relative to the first reference plane S1 and to the second reference plane S2.

[0115] It should be noted that the number of light plates 41 and their arrangement positions described in the embodiments mentioned above serve only as examples and do not constitute a limitation of the disclosure. For example, in some embodiments, the display device 4 may comprise only one light plate 41, wherein the light plate 41 is arranged horizontally on the protective plate 11 and is used to indicate the tilting state of the cutting plane S0. In some embodiments, the display device 4 may comprise two light plates 41, each arranged on both sides of the protective plate 11, and serve to indicate the tilting of the cutting plane S0 to different sides.In a further embodiment, the display device 4 may also comprise three or more light panels 41, which are arranged in the middle and / or on the sides of the protective plate 11 and / or at the location of the housing 1 opposite the protective plate 11, as long as this is advantageous for the operator to observe the display information.

[0116] Furthermore, the number of LED groups 411 arranged on the light plate 41, as well as the number of LED lamp beads contained in each LED group 411, is not limited to the example mentioned above. These can be increased, decreased, or adjusted as needed. As long as the tilt state of the cutting plane S0 can be indicated by the brightness level, the lighting position, and / or the displayed color of the LED groups 411, this falls within the scope of protection of this application.

[0117] The second embodiment of the present invention provides the following technical solution: The trimming tool includes, with reference to Fig. 1 and Fig. 2 a housing 1, a cutting device 2, a drive device 3, a display device 4, and a level detection device 5; wherein a protective plate 11 is arranged on the housing 1; wherein the cutting device 2 and the drive device 3 are both arranged on the housing 1, wherein the cutting device 2 has a cutting plane S0, wherein the drive device 3 is configured to activate the cutting device 2; wherein the display device 4 is arranged on the protective plate 11, wherein the display device 4 is configured to indicate a tilting state of the cutting plane S0 relative to a reference plane; wherein the level detection device 5 is electrically connected to the display device 4 and is configured to detect the tilting state of the cutting plane S0 relative to the reference plane and output a detection signal;where the reference plane comprises a first reference plane S1 and / or a second reference plane S2.

[0118] In this embodiment, after the user starts the drive unit 3, the drive unit 3 is caused to drive the cutting unit 2 arranged on the housing 1, so that the cutting unit 2 rotates about a predetermined axis of rotation, or rotates or moves back and forth along a predetermined curve of motion, thereby forming a cutting plane S0 on the surface of the workpiece to be machined. During the machining process, the user holds the housing 1 with one or both hands so that the cutting plane S0 is close to or in contact with the target surface of the workpiece, and selects the first reference plane S1 or the second reference plane S2 as the reference point, depending on the requirements on site.The level detection device 5 detects the tilt state of the cutting plane S0 relative to the currently selected reference plane in real time during the trimming process and outputs the corresponding detection signal; the display device 4 receives the detection signal from the level detection device 5 and converts it into a clear visual signal, for example by changing the number, position and / or color of the illuminated LED lamp beads or LED groups 411. This provides the user with feedback on the tilt direction and degree of tilt of the cutting plane S0, so that the user can fine-tune the tool position at any time according to the display status, while maintaining a normal grip and a secure stance, in order to precisely machine the target plane or target angle.

[0119] It follows that the structure described above, in combination with the movement, exhibits a variety of advantageous effects: On the one hand, the attachment of a protective plate 11 to the housing 1 and the arrangement of the display device 4 on the protective plate 11 ensure that the display information is located near the cutting area and in a clearly visible position. In conjunction with the level detection device 5, which enables real-time monitoring of the cutting plane S0 relative to the first reference plane S1 and / or second reference plane S2, it is possible to dynamically indicate during the trimming process whether the tool position deviates from the target plane, thus contributing to improved trimming accuracy and consistency.On the other hand, it allows the user to recognize the current cutting state without visually estimating the tool position, thereby reducing tilting based on experience and decreasing the risk of operator error caused by limited viewing angles, insufficient ambient lighting or complex workpiece geometries, resulting in increased workplace safety.

[0120] In this embodiment, when the display device 4 is mounted on the protective plate 11, the protective plate 11 can have different designs to accommodate various mounting methods and protection requirements. The protective plate 11 can have a single-layer or a double-layer structure.

[0121] In some embodiments, the protective plate 11 is a single-layer structure. The single-layer protective plate 11 can be integrally formed from a metal sheet or a sheet of engineering plastic, with the operator-facing side forming a mounting surface for the display unit 4. The display unit 4 can be attached directly to the mounting surface by screws, clamps, or adhesives. The connecting wires associated with the display unit 4 are guided through feedthroughs in the protective plate 11 or routed from an opening into the housing 1. The single-layer protective plate 11 is characterized by its simple design and lower manufacturing costs, is easy to machine and assemble, and is suitable for applications where space for mounting the display unit 4 is limited.

[0122] In other embodiments, the protective plate 11 consists of a double-layered structure. The double-layered protective plate 11 comprises a first protective layer 111 and a second protective layer 112, arranged sequentially along the forward and reverse directions of the trimming tool. The first protective layer 111 faces the cutting device 2, while the second protective layer 112 faces the operator. A gap is arranged between the first protective layer 111 and the second protective layer 112, forming a receiving space for the display device 4. The display device 4 is at least partially located within this receiving space. The display plane S3 of the display device 4 is connected to the outside world via a window that penetrates the second protective layer 112, allowing the operator to observe it. The electrical connecting wires of the display device 4 are routed within this receiving space and lead into the interior of the housing 1.The protective plate with its double-layered structure 11 can, on the one hand, provide a mounting space for the display device 4 without significantly increasing the overall dimensions of the trimming tool. On the other hand, the first protective layer 111 blocks the splashing of fragments occurring during the cutting process and encases and protects the display device 4 and its cables through its double-layered structure, thereby improving the protective function and mounting stability of the display device 4.

[0123] It should be noted that this embodiment may be identical to embodiment I in some embodiments, which is why no further details are given here.

[0124] Exemplary embodiment III of the present invention provides the following technical solution: The trimming tool includes, with reference to Fig. 1, Fig. 2 and Fig. 3 a housing 1, a level detection device 5, a connecting wire 6, a control device 8, a cutting device 2, a drive device 3, a second connecting wire 7 and a display device 4; wherein the level detection device 5 is arranged on the housing 1 and is configured to detect the tilt state of the cutting plane S0 relative to the reference plane and outputs a detection signal; wherein the first connecting wire 6 is electrically connected at one end to the level detection device 5 and is configured to transmit the detection signal detected by the level detection device 5; wherein a control device 8 is arranged on the housing 1, electrically connected to the other end of the first connecting wire 6 and configured to output a display signal based on the detection signal;wherein the cutting device 2 is arranged on the housing 1, wherein the cutting device 2 has a cutting plane S0, wherein the drive device 3 is configured to operate the cutting device 2; wherein a second connecting wire 7 and a display device 4 are provided, wherein the second connecting wire 7 is electrically connected at one end to the control device 8, and wherein the other end of the second connecting wire 7 is electrically connected to the display device 4; wherein the second connecting wire 7 is configured to load the display signal onto the display device 4; wherein the display device 4 is configured to indicate the tilt state of the cutting plane S0 relative to a reference plane based on the display signal.

[0125] In this embodiment, after the start of the trimming operation, the drive unit 3 drives the cutting unit 2 arranged on the housing 1, so that the cutting unit 2 forms a cutting plane S0, which is used for machining the workpiece. During the machining process, the level detection unit 5 detects the tilt state of the cutting plane S0 relative to the reference plane in real time and generates the corresponding detection signal; the detection signal is transmitted via the first connecting wire 6 to the control unit 8 located on the housing 1. Based on the detection signal, the control unit 8 performs calculations and evaluations and outputs a display signal corresponding to the current tilt state. The display signal is transmitted via the second connecting wire 7 to the display unit 4.

[0126] The display unit 4 shows the signal according to a predefined switching-on and off mode, position changes, and / or color changes to clearly illustrate the direction and extent of the deflection of the cutting plane S0 relative to the reference plane. Based on the display results from the display unit 4, the operator can adjust the position and movement of the trimming tool in a timely manner so that the cutting plane S0 is brought closer to the target reference plane and the cutting process can be completed.

[0127] The arrangement described above clearly separates the detection, calculation, and display functions and ensures electrical isolation. This helps to reduce interference and signal loss during signal transmission and improves the accuracy and response time of the tilt detection and display. The first connecting wire 6 and the second connecting wire 7 are used to transmit the detection signal and the display signal, respectively. The wiring path is clearly defined and can be flexibly arranged according to the internal structure of the housing 1 to minimize interference with moving components such as the cutting unit 2 and the drive unit 3. This increases the reliability of the overall wiring and improves ease of assembly and maintenance.The real-time visual feedback of the tilt status from the cutting plane S0 via display unit 4 allows the operator to detect the tilting of the tool position without subjective visual inspection. This reduces operator errors, improves cutting accuracy and consistency, and to some extent reduces the dependence on the operator's eyesight and experience during extended working hours, thereby increasing safety and ergonomic efficiency.

[0128] In some embodiments of this disclosure, the housing 1 comprises a first housing 14 with a first handle 12 and a second housing 15 with a second handle 13; wherein the first handle 12 is arranged at the end closest to the cutting device 2; wherein the second handle 13 is arranged at the end furthest from the cutting device 2; wherein the protective plate 11 is arranged at the end of the housing 1 closest to the cutting device 2;wherein the display device 4 is arranged on the protective plate 11, or the display device 4 is arranged on the housing 1 between the first handle 12 and the second handle 13. Compared to the embodiment in which the display device 4 is attached exclusively to the protective plate 11, the difference in this embodiment is that the mounting position of the display device 4 between the protective plate 11 and the areas of the housing 1 corresponding to the first handle 12 and the second handle 13 can be varied: On the one hand, when the display device 4 is arranged on the protective plate 11, it is located closer to the cutting area, which facilitates direct observation in a working position close to the workpiece;On the other hand, if the display device 4 is located on the housing 1 between the first handle 12 and the second handle 13, it is closer to the operator's hand area, which allows for a more comfortable viewing angle in different grip positions and standing positions, and at the same time facilitates the optimization of the wiring and installation space according to the arrangement of the internal components of the housing 1. It follows that by flexibly choosing the mounting position of the display device 4 in the area between the protective plate 11 and the housing 1, a better balance can be achieved between the visibility of the display, the rationality of the structural arrangement, and ergonomic performance, all of which fall within the scope of this disclosure.

[0129] In some embodiments of this disclosure, the first housing 14 and the second housing 15 are rotatably connected to one another; (it is understood that during use, the operator holds the second handle 13 on the second housing 15, so that the second handle 13 and the associated second housing 15 remain essentially stationary in space, and, according to the work requirements, rotates the first housing 14, on which the first handle 12 and the cutting device 2 are arranged, relative to the second housing 15 by applying force, thereby changing the position of the cutting plane S0 relative to the reference plane.); a level detection device 5, which is electrically connected to the display device 4 and is configured to detect the tilting state of the cutting plane S0 relative to the reference plane and outputs a detection signal.In this embodiment, before operating the trimming tool, the operator can adjust the rotational position of the first housing 14 relative to the second housing 15 according to their height, grip, and the orientation of the object to be cut, so that the first handle 12 and the cutting unit 2 are positioned at a spatial angle corresponding to the current working posture. After completing the adjustment, the operator holds the first handle 12 and the second handle 13 with one or both hands, stabilizes the second housing 15, and guides it through the first housing 14. The drive unit 3 sets the cutting unit 2 in motion, creating a cutting plane S0 suitable for trimming. Simultaneously, the level detection unit 5 detects the tilt state of the cutting plane S0 relative to the reference plane in real time and transmits the detection signal to the display unit 4.The display device 4 displays an optical signal based on the detection signal (for example, by the brightness level, the light position and / or the display color of the LED group 411), so that even if the first housing 14 is in different rotational positions relative to the second housing 15, the tilting direction and tilting extent of the cutting plane S0 can be clearly reported back, which makes it easier for the operator to adjust the trim position in a timely manner.

[0130] Due to the rotatable connection of the part equipped with the first housing 14 relative to the part equipped with the second housing 15, the second handle 13, as the main handle section, remains essentially stationary during use. Under various work scenarios (such as trimming upwards, downwards, trimming against walls or in confined spaces), the operator can rotate the housing section equipped with the first handle 12 and the cutting device 2 relative to the second handle 13 while maintaining a stable grip on it. This adjusts the relationship between the cutting plane S0 and the target plane in a more natural position of the forearm and wrist, reducing joint twisting and muscle strain and increasing ergonomic comfort.Simultaneously, if necessary, the operator can regain stable force support and a suitable cutting position by adjusting the rotation angle of the part equipped with the first housing 14 to change the trimming direction or overall tool position, thereby improving the operability and stability of the entire device. Furthermore, when the tool is not in use, the first housing 14 can be rotated relative to the second housing 15 so that it approaches the side of the second handle 13. This contributes to reducing the overall dimensions of the device and facilitates storage and transport.

[0131] It should be noted that, compared to the embodiment in which the second handle 13 is fixed to the housing 1 and the overall position of the housing 1 relative to the second handle 13 is essentially fixed, the difference in this embodiment is that the housing 1 consists of a first housing 14 and a second housing 15. The first handle 12 and the cutting device 2 are arranged on the first housing 14, while the second handle 13 is arranged on the second housing 15, with the first housing 14 rotatably connected to the second housing 15. During use, the operator mainly holds the second handle 13 located on the second housing 15, so that the second housing 15 remains essentially stationary in space. By applying force, the first housing 14 is rotated relative to the second housing 15 to change the spatial orientation of the cutting plane S0.Provided that the electrical connection between the level detection device 5 and the display device 4, as well as the real-time display function of the tilting state of the cutting plane S0 relative to the first reference plane S1 and / or the second reference plane S2, remain unchanged, the aforementioned relative rotation structure between the first housing 14 and the second housing 15 is introduced. This allows the same detection and display system to be adapted to a wider variety of holding positions and operating environments, thereby further improving the ergonomic comfort and usability of the trimming tool without increasing the complexity of the core measuring and display device.

[0132] In some embodiments of this disclosure, the display device 4 comprises at least one group of light panels 41; wherein the end of the second connecting wire 7 furthest from the control device 8 extends to the central region of the protective plate 11 and is electrically connected to the input terminal of any group of light panels 41, or, wherein the end of the second connecting wire 7 furthest from the control device 8 extends to the lateral region of the protective plate 11 and is electrically connected to the input terminal of any group of light panels 41, the second connecting wire 7 being configured to load the display signal onto the light panel 41.

[0133] Furthermore, in the present embodiment, the first housing 14 can rotate relative to the second housing 15 between at least three predefined angular positions. The second handle 13 is arranged on the second housing 15 and remains essentially stationary during use as the main handle section. The level detection device 5 is always configured to detect the tilt angle of the cutting plane S0 relative to the selected reference plane and output measured values. Based on the current position of the first housing 14 relative to the second housing 15, the control unit 8 selects the corresponding light panel 41 and its predefined range for the stepped display.

[0134] In particular, when the first housing 14 is in the first position relative to the second housing 15, the control unit 8 compares the measured value output by the level detection unit 5 with a predefined first threshold value. For a small tilt angle, for example within approximately 5°, one LED bead is switched on as the first signal in a first predefined range on the horizontal light plate 41. With a further increase in the tilt angle, for example in the range of approximately 5° to 15°, two LED bead beads are activated as the second signal in this first predefined range. For an even larger tilt angle, for example above approximately 15°, three LED bead beads illuminate in this range; optionally, the third LED bead can also be displayed at high brightness or flashing to represent a third signal.

[0135] When the first housing 14 is rotated into the second position relative to the second housing 15, the level detection device 5 continues to detect the tilt angle of the cutting plane S0 relative to the reference plane and outputs a measured value. In this case, the control unit 8 selects the protective plate 11 and the second preset area on the light plate 41 on the side corresponding to the second position for display: For a small tilt angle (e.g., within approximately 5°), a single LED lamp bead is activated as the first signal in the second preset area; for a medium tilt angle (e.g., approximately 5° to 15°), two LED lamp beads are activated as the second signal; for a larger tilt angle (e.g., above approximately 15°), three LED lamp beads are activated as the third signal in the second preset area.

[0136] Similarly, when the first housing 14 is rotated into the third position relative to the second housing 15, the level detection device 5 continues to output a measured value reflecting the tilt state. The control unit 8 selects a graduated display on the protective plate 11 and the third preset area on the opposite side of the light plate 41, corresponding to the third position: At a small tilt angle corresponding to the measured value, one LED lamp bead is switched on as the first signal in the third preset area; at a medium tilt angle, two LED lamp beads are switched on as the second signal; at a large tilt angle, three LED lamp beads are switched on as the third signal in the third preset area.

[0137] For example, in one instance, the reference plane can be defined as the first reference plane S1, where the measured value output by the level detection device 5 corresponds to the tilt angle of the cutting plane S0 relative to the first reference plane S1: If the first housing 14 is in the first position, the stepwise indication is preferably provided via the horizontal light panel 41 in the center of the protective plate 11; if the first housing 14 is in the second or third position, the stepwise indication is provided via the predefined area of ​​the light panel 41 on the left or right side of the protective plate 11, respectively. The operator can assess the tilt angle of the cutting plane S0 relative to the first reference plane S1 based on the number of LED lamp beads and / or the change in brightness.

[0138] In another example, the reference plane can be defined as the second reference plane S2. In this case, the measured value output by the level detection device 5 corresponds to the tilt angle of the cutting plane S0 relative to the second reference plane S2. The light panel 41 on the side of the protective plate 11 can be configured primarily to indicate the tilt state relative to the second reference plane S2, while the middle or other light panel 41 serves to indicate the tilt state relative to the first reference plane S1. The graduated system of single, double, or triple illumination is used to differentiate the three tilt ranges: low, medium, and high. Furthermore, differences in color, brightness, and / or flashing mode of the LED lamp bead group or LED group 411 can differentiate the tilt information corresponding to the first reference plane S1 and the second reference plane S2, respectively.

[0139] It should be noted that the aforementioned values ​​of approximately 5° and 15° are merely exemplary. The specific values ​​of the first, second, and third thresholds, as well as the combination of illumination of the LED lamp beads in the respective target ranges, can be adjusted according to the actual product and safety requirements. As long as the measured values ​​of the level detection device 5 are used as a basis, and the degree of tilt of the cutting plane S0 relative to the selected reference plane is indicated in a graduated manner by the single, double, or triple illumination of the LED lamp beads under various target positions of the first housing 14 relative to the second housing 15 within the corresponding target range, this falls within the scope of protection of this disclosure.

[0140] It should be noted that this embodiment may be identical to embodiment I in some embodiments, which is why no further details are given here.

[0141] Exemplary embodiment IV of the present invention provides the following technical solution: The trimming tool includes, with reference to Fig. 1, Fig. 2 and Fig. 3 a housing 1, a cutting device 2, a drive device 3 and a display device 4, a sensor device 9 and a control device 8; wherein the housing 1 comprises a first housing 14 with a first handle 12 and a second housing 15 with a second handle 13; wherein the first housing 14 is rotatably connected to the second housing 15; wherein the cutting device 2 and the drive device 3 are both arranged on the housing 1, wherein the cutting device 2 has a cutting plane S0, and wherein the drive device 3 is configured to engage the cutting device 2; wherein the display device 4 is arranged on the corresponding housing 1 of the first handle 12 and the second handle 13, and wherein the display device 4 is configured to indicate a tilting state of the cutting plane S0 relative to a reference plane;wherein the sensor device 9 is arranged on the axis of rotation between the first housing 14 and the second housing 15 and is configured to detect information on the relative rotation of the second housing 15 or the first housing 14 and outputs a rotation signal; wherein the control device 8, based on the rotation signal, controls the display device 4 to perform a display in its corresponding area according to the current attitude; wherein a line running along the longitudinal direction of the cutting plane S0 and parallel to the reference plane is considered the tilting axis, wherein the tilting state describes a state in which the cutting plane S0 is tilted about this tilting axis relative to the reference plane.

[0142] Before use, the operator can rotate the first housing 14 around the axis of rotation between it and the second housing 15, according to their height, positioning, and working direction, to assume a comfortable working posture. In this position, the first handle 12 and the cutting device 2, located on the first housing 14, are in a position favorable for operation, while the second housing 15 and the second handle 13 located on it remain essentially stationary. During the rotation of the first housing 14 relative to the second housing 15, the sensor 9 detects the rotation information of the first housing 14 in real time and outputs a rotation signal to the control unit 8 (naturally, the sensor 9 can also detect the rotation information of the second housing 15 in real time and output a rotation signal to the control unit 8).The operator then holds the second handle 13 on the second housing 15 and the first handle 12 on the first housing 14 with both hands, activates the drive unit 3, which sets the cutting unit 2 in motion and forms a cutting plane S0 for trimming; during the trimming process, the cutting plane S0 tilts relative to the reference plane about a tilting axis that runs along the longitudinal direction of the cutting plane S0 and is parallel to the reference plane. Based on the rotation signal output by the sensor unit 9, the control unit 8 controls the display unit 4, which is arranged on the first housing 14 and second housing 15, according to a predefined assignment to the display within the corresponding area.This ensures that, regardless of the angle between the first housing 14 and the second housing 15, the tilting state of the cutting plane S0 relative to the reference plane is clearly displayed in the area near the operator side, which makes it easier for the operator to observe and adjust the trim position at any time.

[0143] This arrangement, in which the first housing 14 is rotatably connected to the second housing 15 and a sensor device 9 is arranged on the axis of rotation between them for real-time detection of the relative rotational movement of the first housing 14 with respect to the second housing 15, allows the spatial orientation of the first handle 12 and the cutting device 2 to be flexibly adapted to different working situations (e.g., trimming up, trimming down, trimming on walls, or trimming in confined spaces), provided that the second handle 13 and the surrounding second housing 15 serve as the primary grip reference and remain essentially stationary during use. This ensures that the operator's forearm and wrist remain in a comfortable, neutral position, reducing joint twisting and muscle strain, and significantly improving ergonomics.Second, based on the rotation signal, the control unit 8 selects and controls the working range of the display unit 4, ensuring that the display unit 4 shows information within the area corresponding to the current grip position. This prevents the original display area from moving into a difficult-to-see position after the rotation of the first housing 14, making it harder to read. This improves the visibility and readability of the display information while maintaining the compact overall structure of the tool. Third, the tilting state is uniformly defined as the state in which the cutting plane S0 is tilted relative to the reference plane about a tilting axis that runs along its longitudinal direction and is parallel to the reference plane.This makes the determination of the tilt angle independent of the operator's grip position, the relative rotational position of the first housing 14 to the second housing 15, and the overall inversion position of the tool. This ensures a uniform basis for evaluating the tilt state under different grips, which improves the reproducibility and consistency of the trimming performance. Overall, operational safety, ease of use, and trimming precision are thus equally considered.

[0144] In some embodiments of this disclosure, the housing 1 comprises a first housing 14 with a first handle 12 and a second housing 15 with a second handle 13. The first housing 14 can be rotated relative to the second housing 15 in at least three predefined positions. The level detection device 5 is always arranged such that it detects the tilt state of the cutting plane S0 relative to the reference plane and outputs a measured value. The control device 8 selects the corresponding light panel 41 and its predefined range for stepped display according to the current position of the first housing 14 relative to the second housing 15.

[0145] In particular, when the first housing 14 is in the first position relative to the second housing 15, the control unit 8 compares the measured value output by the level detection unit 5 with a predefined first threshold, and / or second threshold, and / or third threshold. For a small tilt angle, for example, within approximately 5°, one LED bead is switched on as the first signal in a first predefined range on the horizontal light plate 41. With a further increase in the tilt angle, for example, in the range of approximately 5° to 15°, two LED bead beads are activated as the second signal in this first predefined range. For an even larger tilt angle, for example, above approximately 15°, three LED bead beads illuminate in this range; optionally, the third LED bead can also be displayed at high brightness or flashing to represent a third signal.

[0146] When the first housing 14 is rotated into the second position relative to the second housing 15, the level detection device 5 continues to detect the tilt state of the cutting plane S0 relative to the reference plane and outputs a measured value. In this case, the control unit 8 selects the second preset range on the light panel 41, located on the side of the protective plate 11, for display: If the measured value corresponds to a small tilt angle (e.g., within approximately 5°), one LED lamp bead is switched on as the first signal in the second preset range; at a medium tilt angle (e.g., approximately 5° to 15°), two LED lamp beads are switched on as the second signal; at a larger tilt angle (e.g., above approximately 15°), three LED lamp beads are switched on as the third signal in the second preset range.

[0147] Similarly, the level detection device 5 continues to output a measured value reflecting the tilt state when the first housing 14 is rotated into the third position relative to the second housing 15. The control unit 8 selects the third preset range on the light panel 41, located on the opposite side of the protective plate 11, for stepwise display: At a small tilt angle corresponding to the measured value, one LED lamp bead is switched on as the first signal in the third preset range; at a medium tilt angle, two LED lamp beads are switched on as the second signal; at a large tilt angle, three LED lamp beads are switched on as the third signal.

[0148] It should be noted that the aforementioned values ​​of approximately 5° and 15° are merely exemplary. The specific values ​​of the first, second, and third thresholds, as well as the combination of illumination of the LED lamp beads in the respective target ranges, can be adjusted according to the actual product and safety requirements. As long as the measured values ​​of the level detection device 5 are used as a basis and the degree of tilt is indicated by the single, double, or triple illumination of the LED lamp beads under various target positions of the first housing 14 relative to the second housing 15 within the corresponding target range, this falls within the scope of protection of this disclosure.

[0149] In this embodiment, the display device 4 comprises at least three light plates 41, wherein the three light plates 41 are each arranged at different positions on the housing 1; wherein one of the light plates 41 is arranged approximately horizontally on the housing 1 along the longitudinal direction of the tool, while the other two light plates 41 are each arranged on the left and right sides of the housing 1 and are preferably oriented substantially perpendicular to the horizontally arranged light plate 41.The second handle 13 is defined as the first position when it is in a grip position relative to the housing 1 that corresponds to the horizontally arranged light plate 41; when the second handle 13 is rotated about the axis of rotation to the left towards the housing 1 into a grip position that corresponds to the left light plate 41, this is defined as the second position; when the second handle 13 is rotated about the axis of rotation to the right towards the housing 1 into a grip position that corresponds to the right light plate 41, this is defined as the third position.

[0150] In some embodiments of this disclosure, the level detection device 5 comprises, but is not limited to, angle sensors such as gyroscopes or spirit levels that can detect changes in angle. The angle sensor is arranged on the housing 1 and has a fixed correspondence to the mounting position of the cutting device 2. It is configured to detect the tilt angle of the cutting plane S0 relative to the reference plane and outputs a signal that characterizes the tilt state. Based on the detection signal output by the angle sensor, the control device 8 analyzes and classifies the degree of tilt to generate a display signal that drives the display device 4, so that the display device 4 visually represents the tilt state of the cutting plane S0 relative to the reference plane.

[0151] In some embodiments of this disclosure, the sensor device 9 comprises, but is not limited to, Hall effect sensors, optical sensors, and the like, capable of detecting changes in position. For example, the Hall effect sensor is arranged on the axis of rotation between the housing 1 and the second handle 13. In some embodiments, the Hall effect sensor can interact with a magnetic component mounted on the second handle 13 or the axis of rotation to detect the rotational position and / or angle of rotation of the second handle 13 relative to the housing 1 and to output a rotation signal indicating whether the second handle 13 is currently in the first position, second position, or third position.The control unit 8 selects the light panel 41 corresponding to the current position of the second handle 13 and its predefined display area based on the rotation signal output by the Hall element and controls the corresponding LED groups 411 on the light panel 41 for display in combination with the detection signal output by the level detection unit 5.

[0152] In this embodiment, the sensor device 9 is in the form of a Hall sensor. The second handle 13 is rotatably connected to the housing 1 via a pivot axis. The sensor of the second handle 13 (Hall element) is mounted in the region of the pivot axis, for example in a mounting chamber at the end of the pivot axis, and works in conjunction with a magnet arranged on the pivot axis to detect the rotation angle of the second handle 13 about the pivot axis. When the second handle 13 rotates about the pivot axis, the position of the magnet changes relative to the Hall element. The Hall element outputs an electrical signal corresponding to the rotation angle.This electrical signal is transmitted via the third connecting wire to the control unit 8 inside the housing 1; the control unit 8 detects and processes the electrical signal received via the third connecting wire in order to determine the direction of rotation of the second handle 13 relative to the reference position and the associated angular range.

[0153] After receiving the direction and angle of rotation of the second handle 13 via the second connecting wire 7, the control unit 8 sends a control signal to the indicator light panel 41 in the corresponding direction. This causes the indicator light panel 41 to generate a light display in the area corresponding to the current direction of rotation. For example, the control unit 8 illuminates or changes the color of the indicator light panel 41 in the left area when the second handle 13 is tilted to the left; when the second handle 13 is tilted to the right, the control unit 8 illuminates the indicator light panel 41 in the right area. By adjusting the number, position, and / or display colors of the illuminated LED lamps, a clear representation of the angle of rotation is achieved on the indicator light panel 41.The operator can determine the tilt direction and extent of the tilt of the cutting plane S0 relative to the reference plane simply by observing the changes in light, and thus adjust the tool position in a timely manner during the work process.

[0154] Furthermore, Hall effect sensors can also be used to implement the linkage control between the second handle 13 and the switching on and off of the entire device. Specifically, the Hall effect sensor is configured to detect whether the second handle 13 is in the predefined working position and / or is being held correctly by the operator; the control device 8 only allows the start signal sent by the main trigger to take effect if a valid rotation signal is received from the Hall effect sensor (for example, the signal indicating that the second handle 13 is in one of the first, second, or third positions and the predefined holding conditions are met). Only when the operator operates the main trigger can the drive unit 3 be activated to engage or drive the cutting unit 2.If, however, the Hall element detects that the second handle 13 is not in the specified position, is deflected from the safety position or has been released, the control device 8 prohibits the start of the drive device 3 and / or interrupts the drive force to the drive device 3 during operation of the device, thereby bringing the cutting device 2 to a standstill.

[0155] The aforementioned linkage control prevents the trimming tool from starting even if the main trigger is accidentally activated, provided the second handle 13 is not in the designated working position or is not held correctly. This effectively reduces the risk of unintentional start-up, as well as starting with a one-handed grip or in an abnormal position, thus increasing safety during use. Simultaneously, the system can automatically stop the work process or prevent further operation as soon as the second handle 13 is released or unintentionally moves into an unsafe position, contributing to compliance with higher safety standards.

[0156] It should be noted that this embodiment may be identical to embodiment I in some embodiments, which is why no further details are given here.

[0157] The embodiment V of the present invention provides the following technical solution: The trimming tool includes, with reference to Fig. 1, Fig. 2 and Fig. 3 a housing 1, a cutting device 2, a drive device 3, a display device 4, and a level detection device 5; a housing 1 on which a protective plate 11, a first handle 12, and a second handle 13 are arranged; a cutting device 2 and a drive device 3, both of which are arranged on the housing 1, wherein the cutting device 2 has a cutting plane S0, and wherein the drive device 3 is configured to operate the cutting device 2; a display device 4, which is arranged on the protective plate 11, or the display device 4 is arranged on the housing 1, which is located between the first handle 12 and the second handle 13, wherein the display device 4 is configured to indicate a tilting state of the cutting plane S0 relative to a reference plane;wherein the level detection device 5 is electrically connected to the display device 4 and is configured to detect the tilt state of the cutting plane S0 relative to the reference plane and outputs a detection signal; wherein a line running along the longitudinal direction of the cutting plane S0 and parallel to the reference plane is considered the tilt axis, wherein the tilt state describes a state in which the cutting plane S0 is tilted about this tilt axis relative to the reference plane.

[0158] By simultaneously arranging a first handle 12 and a second handle 13 on the housing 1, and by positioning the display device 4 on the protective plate 11 and / or in the area of ​​the housing 1 between the first handle 12 and the second handle 13, the position of the display device 4 is determined to correspond to the operator's usual gripping range, thus making it easier for the operator to directly observe the display information while in a normal grip position. In conjunction with the level detection device 5, the tilting of the cutting plane S0 relative to the reference plane is detected in real time. A line extending along the longitudinal direction of the cutting plane S0 and parallel to the reference plane is defined as the tilting axis.The tilting state is clearly defined as the tilting of the cutting plane S0 around the tilting axis relative to the reference plane, thus providing a geometrically clear and uniform description of the tool position. This means, firstly, that the operator can intuitively recognize from the display unit 4 whether the cutting plane S0 deviates from the expected reference plane and can therefore adjust their operating posture in a timely manner to improve trimming accuracy and consistency; secondly, the clear definition of the tilting axis and the tilting state facilitates the application of uniform assessment criteria under different operating conditions (such as near-horizontal or near-vertical cutting), reduces errors due to different viewing angles and experience, and simultaneously maintains the compact tool structure and increases overall ergonomic performance and operational safety.

[0159] In this embodiment, when the display device 4 is arranged on the protective plate 11, the protective plate 11 can have different designs to accommodate various mounting methods and protection requirements. The protective plate 11 can have a single-layer or a double-layer structure.

[0160] In some embodiments, the protective plate 11 is a single-layer structure. The single-layer protective plate 11 can be integrally formed from a metal sheet or a sheet of engineering plastic, with the side facing the operator forming a mounting surface for the display device 4. The display device 4 can be attached directly to the mounting surface by means of screws, clamps, or adhesives. The connecting wires associated with the display device 4 are guided through feedthroughs arranged in the protective plate 11 or routed from an opening into the housing 1.

[0161] It should be noted that the second handle 13 and the housing 1 are rigidly connected; that is, the mounting position of the second handle 13 relative to the housing 1 is fixed and unchangeable and does not allow for rotation around an axis of rotation. The use of a rigid connection structure simplifies the mechanical fit between the handle and the housing 1, thereby reducing the number of rotating mechanisms, limiting structures, and associated sensor components. This contributes to lower component costs and assembly complexity while simultaneously increasing the structural strength and long-term reliability of the entire device. Furthermore, under typical cutting conditions, it enables a stable and consistent grip, allowing the operator to develop a consistent operating routine after becoming familiar with the tool, which further improves the stability of the work process.It should be noted that this embodiment is merely an example of the fixed connection of the handle to the housing 1 and does not preclude the possibility that in other embodiments the second handle 13 is rotatably connected to allow adaptation to other grip positions.

[0162] In this embodiment, the display device 4 further comprises only a light panel 41. The light panel 41 is arranged on the protective plate 11 and preferably in a position that is easily visible to the operator when holding the first handle 12 and the second handle 13 in a normal position. Along the longitudinal direction of the light panel 41, the first, second, and third LED lamps are arranged successively, forming the first preset area for displaying the tilt state of the cutting plane S0. The level detection device 5 is configured to detect the tilt angle of the cutting plane S0 relative to the reference plane and output the measured value.The control unit 8 controls the lighting combination of the three LED lamp beads in the first preset area based on the measured value, in order to realize a graduated display of different tilt angles on the same light plate 41.

[0163] In particular, by specifying one or more limit values ​​for the tilt angle of the cutting plane S0, the tilt angle can be divided into three ranges: small tilt, medium tilt, and large tilt. For example, if the measured value of the level detection device 5 corresponds to a smaller tilt angle.

[0164] It should be noted that the number of light plates 41 and their arrangement positions described in the embodiments mentioned above serve only as examples and do not constitute a limitation of the disclosure. For example, in some embodiments, the display device 4 may comprise only one light plate 41, wherein the light plate 41 is arranged horizontally on the protective plate 11 and is used to indicate the tilting state of the cutting plane S0.

[0165] It should be noted that this embodiment may be identical to embodiment I in some embodiments, which is why no further details are given here.

[0166] Exemplary embodiment VI of the present invention provides the following technical solution: With reference to Fig. The trimming tool comprises a housing 1, a cutting unit 2, a drive unit 3, a display unit 4, a level detection unit 5, and a control unit 8. A protective plate 11 is arranged on the housing 1. The cutting unit 2 and the drive unit 3 are each mounted in or on the housing 1. The cutting unit 2 has a cutting plane S0, and the drive unit 3 is configured to drive the cutting unit 2 to form the cutting plane S0 for trimming. The display unit 4 is arranged on the protective plate 11 or on a housing 1 located between the protective plate 11 and the drive unit 3; it also serves to indicate a tilting state of the cutting plane S0 relative to a reference plane.The level detection device 5 is arranged on the housing 1 and serves to detect the tilt state of the cutting plane S0 relative to the reference plane and output a detection signal to the control unit 8. The control unit 8 is electrically connected to the level detection device 5 and the display unit 4. The control unit 8 compares the detection signal with a predefined threshold value, outputs a first signal and a second signal, and, based on the detection signal, controls the display unit 4 to display within a corresponding predefined range. The operating states of the display unit 4 corresponding to the first and second signals differ from each other.A line running along the longitudinal direction of the cutting plane S0 and parallel to the reference plane is considered the tilting axis L0, where the tilting state is defined as the cutting plane S0 being tilted about this tilting axis L0 relative to the reference plane.

[0167] In this embodiment, the control unit 8 has predefined multi-stage threshold values, wherein the predefined threshold values ​​include the first threshold, and / or the second threshold, and the third threshold. Based on the detection signal output by the level detection unit 5, the control unit 8 calculates the tilt angle of the cutting plane S0 relative to the reference plane and compares the tilt angle with the first threshold, and / or the second and third thresholds to determine the threshold range of the current tilt state.The first, second, and third thresholds each correspond to different preset areas on the display unit 4 in spatial position; for example, the first preset area is in the center, the second preset area is on either side of the center, and the third preset area is at the outermost edge, thus establishing a clear correlation between the numerical thresholds and the visual display locations. The individual thresholds can be set to be the same or different. For example, in a symmetrical arrangement, the first, second, and third thresholds can be set to the same absolute value, but the tilt direction and degree can be differentiated by different display areas.

[0168] In particular, in an exemplary embodiment, the tilt angle of the cutting plane S0 can be divided into three ranges by presetting a first threshold, a second threshold, and a third threshold: slight tilt, medium tilt, and significant tilt. For example, the first threshold can be set to approximately 5°, the second threshold to approximately 15°, and the third threshold can be used to limit the upper limit of a larger tilt range or as an alarm limit.

[0169] If the measured value detected by the level detection device 5 corresponds to a small tilt angle, for example if the absolute value of the tilt angle is less than or equal to the first threshold value (approximately within 5°), only the first LED lights up and / or lights up with lower brightness as the first signal, corresponding to the first operating state of the display device 4, to indicate that the cutting plane S0 is in the safe area;If the tilt angle continues to increase and is between the first and second threshold values, for example in the middle range of approximately 5° to 15°, the first LED lamp bead and second LED lamp bead light up simultaneously and / or the second LED lamp bead shines brighter than the first LED lamp bead, as a second signal, corresponding to the second operating state of the display device 4, to indicate that the tilt angle has increased significantly and the operator should make an adjustment;If the tilt angle continues to increase and exceeds the second threshold, for example, if the absolute value of the tilt angle is greater than approximately 15° and less than or equal to the third threshold, the first LED lamp bead, second LED lamp bead, and third LED lamp bead will illuminate simultaneously and / or the third LED lamp bead will appear brightly or flashing as a third signal, corresponding to the third operating state of the indicator device 4, to indicate that the tilt angle is significant and the operator should make an adjustment in a timely manner or stop work.

[0170] Optionally, the first, second, and third thresholds can be set numerically in ascending order. Alternatively, they can be set to the same or different values ​​according to the spatial position of the various display areas on the light panel 41 and / or the different LED groups 411. It is only necessary to ensure that there is a clear assignment between the numerical thresholds and the corresponding display areas; for example, the first threshold corresponds to the central area of ​​the light panel 41, the second threshold to the lateral areas of the central section, and the third threshold to the outermost area. It should be noted that the values ​​mentioned above, approximately 5° and approximately 15°, are to be understood as exemplary settings.In practical application, the specific limit values ​​and the corresponding combinations of illuminated LEDs can be adjusted depending on the structure size of the respective tool, the application scenario, and safety requirements. As long as a graduated feedback on the tilt angle is achieved through the brightness level and / or the illumination position of LED lamp beads of LED groups 411 on the same light plate 41 and / or changes in the display colors of the LED lamp beads, this falls within the scope of protection of this disclosure.

[0171] In a preferred embodiment, the display device 4 comprises at least one light panel 41 and several LED lamp beads arranged on the light panel 41. Upon outputting the first and second signals, the control device 8 causes a change in the operating state of the display device 4, wherein the operating state corresponds to the brightness levels and / or the illuminated position of the LED groups, as well as the color change of the LED lamp beads. In particular, this can be achieved by changing the brightness level of the LED groups (e.g., continuous illumination, switching off, or flashing at different frequencies), by changing the position of the illuminated LED groups on the display device 4 (e.g., switching on only LED groups near the center, sequentially extending LED groups to both sides, or switching on only LED groups near one side), and / or by changing the display color of the LED groups (e.g.,Green indicates that the tilt angle is within the target range, yellow indicates approach to the threshold, and red indicates that the tilt angle exceeds the threshold, in order to visually distinguish different tilt states. If the tilt angle falls within the range limited by the first threshold, the control unit 8 can operate the LED groups in the first preset range in a first operating state; if the tilt angle falls within the range limited by the second or third threshold, the control unit 8 can operate the LED groups in the second or third preset range in a different operating state, whereby the brightness, position of the lights, and / or the color change of the LED groups clearly indicate the tilt direction and tilt angle of the cutting plane S0 relative to the reference plane to the operator.

[0172] In some embodiments, when the display device 4 is mounted on the protective plate 11, the protective plate 11 can have different designs to accommodate various mounting methods and protection requirements. The protective plate 11 can have a single-layer or a double-layer structure.

[0173] It should be noted that the difference between this embodiment and embodiment IV is that in embodiment IV the display device 4 is arranged either on the protective plate 11 or on the housing 1 between the first handle 12 and the second handle 13; whereas in the present embodiment the display device 4 can be arranged not only on the protective plate 11, but also in the area of ​​the housing 1 corresponding to the first handle 12 and the second handle 13. This further optimizes the arrangement of the display device 4 relative to the operator's grip area while simultaneously fulfilling different requirements for the structural and design aspects.

[0174] In some embodiments of this disclosure, the display device 4 comprises at least one light plate 41 and several LED groups arranged on the light plate 41; wherein the trimming tool further comprises a level detection device 5 and a control device 8; wherein the level detection device 5 is arranged on the housing 1 and is configured to detect the tilt state of the cutting plane S0 relative to the reference plane and outputs a detection signal; wherein the control device 8, based on the rotation signal, controls the display device 4 to display in its corresponding preset range according to the detection signal and causes the display device 4 to change the brightness level and / or the light position of at least three LED groups and their display color according to the detection signal.

[0175] In particular, at least three LED groups can be the first LED lamp bead, the second LED lamp bead and the third LED lamp bead (using the example...).(of three LED groups): When the tilt angle of the cutting plane S0 is small, only the first LED bead illuminates, or it illuminates at a low brightness to indicate a small tilt that is within the safe range; when the tilt angle of the cutting plane S0 continues to increase, the first and second LED bead illuminate simultaneously, or the second LED bead illuminates more brightly than the first to indicate a medium tilt angle that requires operator attention; when the tilt angle of the cutting plane S0 reaches a large range, the first, second, and third LED bead illuminate together, or the third LED bead illuminates at a high brightness or flashes to indicate a large tilt angle that is close to the permissible upper limit and to remind the operator to adjust in time or stop work.It should be noted that the above-mentioned number of LED groups, the switching-on sequence and the type of brightness change can be adjusted according to actual needs and therefore do not constitute a limitation of the scope of protection of this disclosure.

[0176] As another example, the tilt angle of the cutting plane S0 can be represented by the different lighting positions of at least three different LED groups.

[0177] It should be noted that the aforementioned number of LED lamps, their arrangement, and the lighting positions represented by different tilt angles can be adjusted according to actual requirements. For example, a more finely subdivided tilt range can also be represented by simultaneously switching on two or more LED groups at different positions, without thereby limiting the scope of protection of this disclosure.

[0178] As another example, the tilt angle of the cutting plane S0 can be represented by the display colors of at least three different LED groups. It should be noted that the first, second, and third colors can be selected from any easily distinguishable color combinations, depending on actual needs, and this does not constitute a limitation of the scope of protection of the present disclosure.

[0179] In the embodiment described above, the control unit 8 comprises a first control board 81 and a second control board 82. The first control board 81 is located in the housing 1 at the position corresponding to the second handle 13. The first control board 81 includes buttons such as a speed control switch for setting the operating parameters of the drive unit 3 and a control switch for setting the operating mode of the display unit 4, which serve to detect the operating signals issued by the operator at the second handle 13. The second control board 82 is located in the housing 1 between the first handle 12 and the second handle 13. The second control board 82 is electrically connected to the drive unit 3, the display unit 4, and the battery pack and serves to centrally process the signals coming from the first control board 81 and the level detection unit 5, as well as to output control signals.

[0180] When the level detection device 5 is arranged on the second handle 13, one end of the first connecting wire 6 is electrically connected to the level detection device 5, while the other end is electrically connected to the second control board 82. The first connecting wire 6 is configured to transmit the detection signal acquired by the level detection device 5 to the second control board 82; the second control board 82 filters, calculates, and evaluates the detection signal transmitted via the first connecting wire 6 using a threshold value to determine the tilt state of the cutting plane S0 relative to the first reference plane S1 and / or second reference plane S2.Based on predefined evaluation rules, it generates a display signal for controlling the display device 4, which is output to the display device 4 via the second connecting wire 7, so that the light plate 41 arranged on the protective plate 11 and / or between the protective plate 11 and the drive device 3 on the housing 1, as well as the LED group 411, indicate the tilting direction and / or the tilting extent of the cutting plane S0.

[0181] Exemplary embodiment VII of the present invention provides the following technical solution: The trimming tool includes, with reference to Fig. 1 to Fig. 3 a housing 1, a cutting device 2, a display device 4, and a control device 8; wherein the housing 1 comprises a first housing 141 with a first handle 12 and a second housing 151 with a second handle 13; wherein the first housing 141 moves relative to the second housing 151 between a first position and a second position; wherein the cutting device 2 is arranged on the housing 1, wherein the cutting device 2 has a cutting plane S0, wherein the display device 4 is arranged on the housing 1, wherein the display device 4 is configured to indicate a tilt state of the cutting plane S0 relative to a reference plane; wherein the control device 8 is arranged on the housing 1 and is configured such that, in the first position, the control device 8 controls the display device 4 to indicate the tilt state of the cutting plane S0 relative to the reference plane in a first preset range;wherein the control device 8 in a second position controls the display device 4 to display the tilt state of the cutting plane S0 relative to the reference plane in a second predefined area.

[0182] It should be noted that the first position can be defined as the position in which the first housing 141 assumes a horizontal posture relative to the second housing 151, with the direction of this horizontal posture serving as the reference direction; the second position can be defined as the posture in which the first housing 141 is tilted to the left relative to the second housing 151 (for example, tilted approximately 90° relative to the reference direction); the third position can be defined as the posture in which the first housing 141 is tilted to the right relative to the second housing 151 (for example, tilted approximately 90° relative to the reference direction); here, left and right are defined in relation to the operator, who is in a normal holding position and facing the cutting device 2.

[0183] In some embodiments of this disclosure, the trimming tool further comprises a level detection device 5. The level detection device 5 is housed in the casing 1 and is configured to detect the tilt state of the cutting plane S0 relative to the reference plane and output a detection signal; the control device 8 is electrically connected to the level detection device 5 and the display device 4 and is configured to cause the display device 4 to output a first display signal in the first position or the second position based on the first detection signal detected by the level detection device 5, and to cause the display device 4 to output a second display signal based on the second detection signal detected by the level detection device 5.

[0184] For example, when the first housing 141 is in the first position (horizontal orientation, reference direction 0°) relative to the second housing 151, the display device 4 is set to the first preset range by the control device 8: If the measured value meets the condition of the first threshold (e.g., if the tilt angle is within 5°), a first display signal is shown in the first preset range (e.g., the illumination of one LED lamp bead); if the measured value meets the condition of the second threshold (e.g., if the tilt angle is between 5° and 10°), a second display signal is shown in the first preset range (e.g., the illumination of two LED lamp beads); if the measured value meets the condition of the third threshold (e.g., if the tilt angle is between 10° and 15°), a third display signal is shown in the first preset range (e.g., the illumination of three LED lamp beads).When the first housing 141 is in the second position (tilted to the left) relative to the second housing 151, the control unit 8 switches the display range of the display unit 4 to the second preset range and displays the first, second, and third display signals, respectively, according to the same display rules as in the first preset range. Optionally, the first housing 141 is in a third position relative to the second housing 151 (tilted to the right), in which case the control unit 8 switches the display range of the display unit 4 to a third preset range and displays the first, second, and third signals, respectively, according to the section rule for threshold values.It follows that, regardless of whether the first housing 141 is in a horizontal position or in a laterally tilted position relative to the second housing 151, the operator can clearly see the angularity display of the cutting plan S0 within the specified range corresponding to the current position.

[0185] Exemplary embodiment VIII of the present invention provides the following technical solution: The trimming tool includes, with reference to Fig. 1 to Fig.3 a housing 1, a cutting device 2, a display device 4 and a control device 8; wherein the housing 1 comprises a first housing 141 with a first handle 12 and a second housing 151 with a second handle 13; wherein the first housing 141 moves relative to the second housing 151 between a first position and a second position; wherein the cutting device 2 is arranged on the housing 1, wherein the cutting device 2 has a cutting plane S0; wherein the display device 4 is arranged on the housing 1, wherein the display device 4 is configured to indicate a tilting state of the cutting plane S0 relative to a reference plane;wherein the control device 8 is arranged on the housing 1 and is configured such that, when the first housing 141 is in the first position or the second position relative to the second housing 151, it controls the display device 4 based on the tilt state of the cutting plane S0 relative to the reference plane.

[0186] During operation, the cutting unit 2 is driven and forms a cutting plane S0. The detection unit is located in the housing 1 to detect the tilt state of the cutting plane S0 relative to the reference plane and output a detection signal corresponding to the tilt state. The control unit 8 receives the detection signal and, based on the tilt state represented by the detection signal, generates control commands that in turn control the display unit 4 to output display information corresponding to the current tilt state. This allows the operator to detect the cutting plane S0 relative to the reference plane in real time and adjust their working position accordingly.

[0187] It should be noted that in this embodiment, the control unit 8 controls the display unit 4 based on the tilt state of the cutting plane S0 relative to the reference plane and is not dependent on the relative position of the first housing 141 to the second housing 151. Therefore, the display unit 4 can correctly and continuously display the tilt state regardless of whether the first housing 141 is rotating relative to the second housing 151 or whether the first housing 141 is in the first or second position. This avoids display interruptions, display offsets, or inconsistencies in the display logic due to the relative rotation of the housing 1, thus increasing the reliability and usability of the tilt display. It is understood that the present invention does not limit its application to the detailed structure and arrangement of the components described in the invention.This invention may have further embodiments and can be realized and implemented in a variety of ways. The aforementioned transformations and modifications fall within the scope of this invention. It is understood that the present invention encompasses all alternative combinations of two or more individual features mentioned or apparent in the text and / or the accompanying figures. All these different combinations constitute several alternative aspects of the present invention. The embodiments described in the present invention illustrate the best known methods for implementing this invention and enable those skilled in the art to utilize it. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] CN 202520618063.7

[0001] CN 202512059010.3

[0001]

Claims

[1] Trimming tool, characterized by , that the trimming tool includes the following: a housing to which a protective plate is attached; a cutting device and a drive device, both of which are arranged on the housing, the cutting device having a cutting plane, the drive device being configured to drive the cutting device; a display device arranged on the protective plate, wherein the display device is configured to indicate a tilting state of the cutting plane relative to a reference plane; wherein the tilting axis is a line running along the longitudinal direction of the cutting plane and parallel to the reference plane, wherein the tilting state is a tilting of the cutting plane about the tilting axis relative to the reference plane. [2] Trimming tool according to claim 1, characterized by , that the trimming tool further includes the following: a level detection device housed in the casing and configured to detect the tilt state of the cutting plane relative to the reference plane and output a detection signal; a control unit configured to control the operating state of the display unit based on the detection signal. [3] Trimming tool according to claim 2, characterized by , that the display device comprises at least two groups of light panels; wherein the at least two groups of light panels are arranged on the protective plate, wherein projections of any two groups of light panels on the plane of the protective plate enclose a predetermined angle to each other. [4] Trimming tool according to claim 2, characterized bythat the display device comprises at least two groups of light panels; wherein at least two groups of light panels are arranged on the protective plate, with projections of each of two groups of light panels running parallel to each other on the plane of the protective plate. [5] Trimming tool according to claim 2, characterized by that the display device comprises at least two groups of light panels; wherein, in the case of two adjacent groups of light panels, an output terminal of one group is electrically connected in series to an input terminal of the other group. [6] Trimming tool according to claim 2, characterized by , that a first handle and a second handle are arranged on the housing; wherein the first handle is arranged at the end of the housing closer to the cutting device and the protective plate; wherein the second handle is arranged at the end of the housing furthest from the cutting device and the protective plate; wherein the display plane of the display device forms a first angle with the cutting plane; wherein the first angle is greater than or equal to 20° and less than 90°; and / or wherein a reference plane perpendicular to the cutting plane forms an angle of inclination with the cross-section extending along the longitudinal direction of the first handle; wherein the angle of inclination is in the range of 0° to 15°; and / or wherein the display device forms a preset plane near the lower end of the housing and the upper end of the handle section of the first handle, wherein there is a second angle between the preset plane and the cutting plane, the second angle being between 0° and 90°; and / or wherein the plane formed by the line connecting the top of the first handle and the top of the protective plate forms a third angle with the horizontal plane in which the top of the first handle is located; wherein the third angle is between 10° and 45°; and / or wherein the plane formed by the line connecting the lateral tip of the first handle and the lateral tip of the guard plate forms a fourth angle with the cutting plane; wherein the fourth angle lies between 0° and 35°; and / or wherein the widest distance of the projection of the first handle on the projection plane, which is perpendicular to the cutting plane, is considered the first distance; wherein the widest distance of the projection of the display device is considered the second distance; wherein the range of values ​​for the first distance is between 190 mm and 250 mm; wherein the range of values ​​for the second distance is between 100 mm and 250 mm, wherein the ratio between the first distance and the second distance is between 1:1 and 1:2.

5. [7] Trimming tool according to any one of claims 3 to 6, characterized by , that the trimming tool further includes the following: a first connecting wire which is electrically connected at one end to the level detection device, wherein the first connecting wire is configured to transmit the tilt signal of the cutting plane relative to the reference plane detected by the level detection device; wherein the control device is electrically connected to the other end of the first connecting wire and is configured to output a display signal based on the tilt signal; a second connecting wire which is electrically connected at one end to the control device, wherein the other end of the second connecting wire is electrically connected to the input terminal of any group of light panels; the second connecting wire is configured to apply the display signal to the light panels. [8] Trimming tool according to any one of claims 3 to 6, characterized by that several LED groups are arranged on the light panel; wherein the operating state of the display device includes the brightness level and / or the light position and / or the display color of the LED groups. [9] Trimming tool, characterized by , that the trimming tool includes the following: a housing to which a protective plate is attached; a cutting device and a drive device, both arranged on the housing, wherein the cutting device has a cutting plane; wherein the drive device is configured to drive the cutting device; a display device arranged on the protective plate, wherein the display device is configured to indicate a tilting state of the cutting plane relative to a reference plane; a level detection device housed in the casing and configured to detect the tilt state of the cutting plane relative to the reference plane and output a detection signal; where the reference plane includes a first reference plane and / or a second reference plane; where the first reference plane is the plane in which the cutting plane is located when the cutting plane is parallel to the horizontal plane; where the second reference plane is the plane in which the cutting plane is located when the cutting plane is perpendicular to the horizontal plane. [10] Trimming tool, characterized by , that the trimming tool includes the following: a housing to which a protective plate is attached; a cutting device arranged on the housing, wherein the cutting device has a cutting plane; a level detection device arranged on the housing and configured to detect the tilt state of the cutting plane relative to the reference plane and output a detection signal; a first connecting wire which is electrically connected at one end to the level detection device and is configured to transmit the detection signal detected by the level detection device; a control device that is located on the housing, electrically connected to the other end of the first connecting wire and configured to output a display signal based on the detection signal; a drive unit configured to drive the cutting unit; a display device that is arranged on the housing; a second connecting wire, wherein one end of the second connecting wire is electrically connected to the control device, wherein the other end of the second connecting wire is connected to the display device, wherein the second connecting wire is configured to load the display signal onto the display device; the display device is configured to indicate the tilt state of the cutting plane relative to a reference plane based on the display signal. [11] Trimming tool according to claim 10, characterized by, that the case has a first case with a first handle and a second case with a second handle; wherein the first handle is arranged at the end closer to the cutting device; wherein the second handle is arranged at the end furthest from the cutting device; wherein the protective plate is arranged at the end of the housing closer to the cutting device; wherein the display device is arranged on the protective plate, or the display device is arranged on the housing between the first handle and the second handle. [12] Trimming tool according to claim 11, characterized by , that the first housing is rotatably connected to the second housing; a sensor device that is arranged on the second housing and configured to detect information about the relative rotation of the second housing or the first housing and outputs a rotation signal; a control device that, based on the rotation signal, controls the display device to display in its corresponding preset range according to the detection signal. [13] Trimming tool according to claim 11, characterized by , that the display device includes at least one group of light panels; wherein the end of the second connecting wire furthest from the control device is electrically connected to the input terminal of any group of light panels; the second connecting wire is configured to apply the display signal to the light panels. [14] Trimming tool, characterized by , that the trimming tool includes the following: a housing comprising the following; wherein the first housing is provided with a first handle, wherein the second housing is provided with a second handle, wherein the first housing is rotatably connected to the second housing; a cutting device and a drive device, both of which are arranged on the housing, wherein the cutting device has a cutting plane, and wherein the drive device is configured to drive the cutting device; a level detection device arranged on the housing and configured to detect the tilt state of the cutting plane relative to the reference plane and output a detection signal; a display device arranged on the housing between the first handle and the second handle, wherein the display device is configured to indicate a tilting state of the cutting plane relative to a reference plane; a sensor device that is arranged on the housing and configured to detect information about the relative rotation of the second housing or the first housing and outputs a rotation signal; a control device which, based on the detection signal by comparison with a predetermined threshold, outputs a first signal and a second signal, wherein the first signal and the second signal indicate different operating states of the display device; wherein the control device selects the target range based on the rotation signal and controls the display device to display in its corresponding target range according to the detection signal; where a line running along the longitudinal direction of the cutting plane and parallel to the reference plane is considered the tilting axis, and the tilting state describes a state in which the cutting plane is tilted about this tilting axis relative to the reference plane. [15] Trimming tool, characterized by , that the trimming tool includes the following: a housing on which a protective plate, a first handle and a second handle are arranged; a cutting device and a drive device, both of which are arranged on the housing, wherein the cutting device has a cutting plane, and wherein the drive device is configured to drive the cutting device; wherein the first handle is located at an end of the housing that is close to the cutting device and the protective plate; wherein the second handle is located at an end of the housing that is away from the cutting device and the protective plate; a display device arranged on the guard plate, or the display device arranged on a housing located between the first handle and the second handle; wherein the display device is configured to indicate the tilt state of the cutting plane relative to a reference plane; a level detection device housed in the casing and configured to detect the tilt state of the cutting plane relative to the reference plane and output a detection signal; where a line running along the longitudinal direction of the cutting plane and parallel to the reference plane is considered the tilting axis, and the tilting state describes a state in which the cutting plane is tilted about this tilting axis relative to the reference plane. [16] Trimming tool, characterized by , that the trimming tool includes the following: a housing to which a protective plate is attached; a cutting device and a drive device, both of which are arranged on the housing, wherein the cutting device has a cutting plane, and wherein the drive device is configured to drive the cutting device; a display device arranged on the guard plate, or the display device arranged on a housing located between the guard plate and the drive device; wherein the display device is configured to indicate a tilting state of the cutting plane relative to a reference plane; a level detection device arranged on the housing and configured to detect the tilt state of the cutting plane relative to the reference plane and output a detection signal; a control device which, based on the detection signal by comparison with a predetermined threshold, outputs a first signal and a second signal, wherein the first signal and the second signal indicate different operating states of the display device; wherein the control device controls the display device to display in its corresponding preset range according to the detection signal; where a line running along the longitudinal direction of the cutting plane and parallel to the reference plane is considered the tilting axis, and the tilting state describes a state in which the cutting plane is tilted about this tilting axis relative to the reference plane. [17] Trimming tool, characterized by , that the trimming tool includes the following: a housing comprising the following, wherein the first housing is provided with a first handle, wherein the second housing is provided with a second handle, and wherein the first housing moves relative to the second housing between a first position and a second position; a cutting device arranged on the housing, wherein the cutting device has a cutting plane; a display device arranged on the housing, wherein the display device is configured to indicate the tilt state of the cutting plane relative to a reference plane; and a control device arranged on the housing and configured such that in the first position the control device controls the display device to display the tilt state of the cutting plane relative to the reference plane in a first predefined area; wherein in a second position the control device controls the display device to display the tilt state of the cutting plane relative to the reference plane in a second predefined area. [18] Trimming tool according to claim 17, characterized by , that the trimming tool further includes the following: a level detection device housed in the casing and configured to detect the tilt state of the cutting plane relative to the reference plane and output a detection signal; wherein the control device in the first position or the second position is configured to control the display device to output a first display signal based on the first detection signal detected by the level detection device; and that it controls the display device to output a second display signal based on the second detection signal detected by the level detection device. [19] Trimming tool, characterized by , that the trimming tool includes the following: a housing comprising the following, wherein the first housing is provided with a first handle, wherein the second housing is provided with a second handle, and wherein the first housing moves relative to the second housing between a first position and a second position; a cutting device arranged on the housing, wherein the cutting device has a cutting plane; a display device arranged on the housing; wherein the display device is configured to indicate the tilt state of the cutting plane relative to a reference plane; and a control device which is arranged on the housing and configured to control the display device based on the tilt state of the cutting plane relative to the reference plane when the first housing is in the first position or the second position relative to the second housing.

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