CN108422493B

CN108422493B - Portable machine tool

Info

Publication number: CN108422493B
Application number: CN201810148901.3A
Authority: CN
Inventors: D·丹尼斯; J·毛特; M·瓦尔; T·里克
Original assignee: Robert Bosch GmbH
Current assignee: Robert Bosch GmbH
Priority date: 2017-02-13
Filing date: 2018-02-13
Publication date: 2022-05-27
Anticipated expiration: 2038-02-13
Also published as: EP3360657A1; CN108422493A; EP3360657B1; DE102017202197A1

Abstract

The invention relates to a portable power tool, in particular a circular saw, comprising: a housing unit; at least one guide unit for guiding at least a swing motion of the housing unit; at least one setting unit for setting at least one cutting parameter, in particular a cutting depth and a cutting angle, having at least one fixing element, in particular a latching element, arranged on the guide unit for fixing the position of the housing unit and/or limiting the movement of the housing unit; at least one operating unit having at least one operating element at least for acting on the fixing element. It is proposed that the portable power tool have at least one at least partially flexible transmission unit, which is provided for transmitting a movement of the operating element to the stationary element.

Description

Portable machine tool

Technical Field

The invention relates to a portable power tool, in particular a circular saw.

Background

There has been proposed a circular saw having: a housing unit; a guide unit for guiding a swing motion of the housing unit; an adjusting unit for adjusting a cutting depth and a cutting angle, the adjusting unit having a fixing member disposed on the guide unit for fixing a position of the housing unit or restricting a movement of the housing unit; and at least one operating unit having at least one operating element for acting at least on the fixing element.

Disclosure of Invention

The invention relates to a portable power tool, in particular a circular saw, comprising a housing unit; at least one guide unit for guiding at least the pivoting movement of the housing unit; at least one setting unit for setting at least one cutting parameter, in particular a cutting depth and a cutting angle, the setting unit having at least one fixing element, in particular a latching element, arranged on the guide unit for fixing the position of the housing unit and/or limiting the movement of the housing unit; and at least one operating unit having at least one operating element for acting at least on the fixing element.

It proposes: the portable power tool has at least one at least partially flexible transmission unit, which is provided to transmit the movement of the operating element to the stationary element.

In order to solve the object according to the invention, it is conceivable that the portable power tool, in particular a circular saw, is designed in an alternative configuration independently of the easily bendable transmission unit. In this alternative configuration, the portable power tool comprises in particular: a housing unit; at least one guide unit for guiding at least a swing motion of the housing unit; at least one setting unit for setting at least one cutting parameter, in particular a cutting depth and a cutting angle, having at least one fixing element, in particular a latching element, arranged on the guide unit for fixing the position of the housing unit and/or for limiting the movement of the housing unit; and at least one operating unit having at least one operating element at least for acting on the fixing element. It proposes: in this alternative embodiment, the portable power tool has at least one fluid-containing transmission unit, which is provided to transmit the movement of the actuating element to the stationary element. It is also conceivable for the transfer unit to be at least partially flexible and to be at least partially fluid-containing. The fluid-containing and/or fluid-conducting components of the transfer unit, such as the fluid lines, can be particularly at least partially flexible.

Advantageously, the portable power tool is designed as a handheld circular saw, in particular as a pendulum-type saw

Particularly advantageously, the portable power tool has at least one base plate. Preferably, the base plate has at least one contact element with at least one contact surface for the workpiece to be machined. Preferably, the oscillating movement of the housing unit is an oscillating movement relative to the base plate. Advantageously, the pivoting movement corresponds to a movement for setting the cutting depth. Preferably, the guide unit is provided for guiding a further pivoting movement of the housing unit, in particular a pivoting movement relative to the base plate. This further pivoting movement corresponds in particular to the movement for setting the cutting angle. Preferably, the cutting angle corresponds to a chamfer angle.Advantageously, the housing unit is connected to the base plate at least substantially unsprung (unsprung). Preferably, the portable power tool is configured differently from a plunge circular saw.

In particular, the portable power tool has at least one advantageously exchangeable tool, preferably a circular saw blade, which is particularly advantageously arranged at least partially in the housing unit and/or is mounted on the housing unit in a movable, in particular rotatable manner. Preferably, the pivoting movement of the tool is coupled to a pivoting movement of the housing unit, in particular to a first pivoting movement and a second pivoting movement. Advantageously, the setting unit is provided for setting the position of the tool relative to the base plate, in particular for setting the at least one cutting parameter. The cutting angle corresponds in particular to the angle between the main extension plane of the base plate and the main extension plane of the tool. Furthermore, the cutting depth corresponds in particular to the distance between the contact surface and the point of the tool which is furthest away from the housing unit and from the contact surface, advantageously measured parallel to the surface normal of the contact surface and/or perpendicular to the surface normal of the main extension plane of the tool. The cutting depth preferably corresponds to the penetration depth of the tool into the workpiece to be machined, in particular against the contact surface. A "main plane of extension" of an object is to be understood to mean, in particular, a plane which is parallel to the largest side of a smallest imaginary cuboid which also surrounds the object exactly completely and which extends, in particular, through the center of the cuboid.

Preferably, the guide unit comprises at least one guide element for the housing unit. The guide elements can be configured, for example, as sliding grooves, guide rails or the like. Advantageously, the guide element defines a guide trajectory in the shape of a circular arc. In particular, the guide unit, in particular the guide element and/or the positioning element, preferably has at least two different stop positions, in particular latching positions, for the fastening element. Advantageously, the guide unit, in particular the guide element and/or the positioning element, has a plurality of such fixed positions, which correspond to different cutting parameters. It is also conceivable that the guide unit is provided for the stepless or at least approximately stepless, in particular fine-meshed, setting of the cutting parameters and preferably has a corresponding number of, in particular continuously distributed, stop positions for the fixing elements. Preferably, the guide unit has at least one guide element and/or positioning element for each adjustable cutting parameter and in particular a fixing element arranged on the guide element and/or the positioning element, for example at least one guide element for guiding the housing unit for adjusting the cutting depth and/or at least one guide element for guiding the housing unit for adjusting the cutting angle. However, it is of course also conceivable for at least one guide element and/or at least one positioning element of the guide unit to be associated with two different cutting parameter settings. It is conceivable that the adjustment unit and the guide unit comprise at least one common element, for example a guide element and/or a positioning element. A reliable setting mechanism can be provided if the fixing element is designed as a latching element. It is also conceivable that the fixing element is part of a self-reinforcing locking mechanism and/or part of a frictional force-fitting connection, in particular in combination with a key and a wedge, advantageously configured together with the guide unit. Furthermore, it is conceivable for the fixing element to be designed as an electromagnet. In particular, in this case, when the operating element is actuated, for example, the respective electromagnet can be activated or deactivated, thereby releasing or preventing the setting of the cutting parameters. The movement of the actuating element can be transmitted, for example, by a transmission unit to the actuating element of the respective electromagnet. It is also conceivable that the transmission unit is at least partially designed as an electrical line in this case.

The actuating element can be designed in particular as a push button and/or a lever and/or a pull button or other mechanical actuating element. Preferably, the operating element is provided for actuation with at least one finger, in particular a thumb, and/or with at least one hand. Advantageously, the operating element is provided for influencing the fixing state of the fixing element. The securing element can be released and/or locked, in particular, by actuating the actuating element. Advantageously, the operating element is provided, in particular before and/or after the setting process of the cutting parameters, for actuation by a user, in particular for releasing the fastening element, which release advantageously makes it possible to set at least one cutting parameter.

In this context, an "easily bendable object" is to be understood in particular as an object which cannot be subjected to a bending moment or which can receive a bending moment under deformation of the object, in particular only under deformation of the object. The object that is easily bendable may especially be soft. Advantageously, the pliable object is at least partially pliable under the influence of forces that may be applied by a person, for example with an arm, hand and/or finger. Advantageously, the transfer unit comprises at least one easily bendable transfer section. Particularly advantageously, the flexible transmission section is of tubular and/or wire-like and/or cable-like and/or tubular design. The transmission unit is provided in particular for generating at least a partial movement of the fixing element by a movement of the actuating element. Advantageously, the transmission unit is provided for transmitting at least a part of the actuating force acting on the actuating element as an actuating force to the stationary element. The transmission unit can be provided in particular for converting and/or transforming, for example increasing and/or decreasing, a movement and/or an actuating force. Preferably, the transfer unit is designed in particular completely mechanically. It is also conceivable that the transmission unit comprises at least one actuator and/or at least one force amplifier and/or at least one active force transducer. Advantageously, the transmission unit is provided for transmitting an actuating movement, in particular a pressing or pulling movement, of the actuating element to the fixing element in such a way that the fixing element is moved from at least one fixing position into at least one unfixed position, in particular so that a cutting angle can be set. Furthermore, the transmission unit is advantageously provided for mechanically transmitting a parking movement, in particular a pulling or pressing movement, of the actuating element, in particular in the direction opposite to the actuating movement, to the fixing element.

Improved properties can be achieved, in particular in terms of ergonomics and/or hand operation, by the configuration of the portable power tool according to the invention. Intuitive operability can advantageously be achieved. Furthermore, the cutting depth and/or the cutting angle, in particular the beveling angle, can be adjusted in particular in a simple and/or reliable manner. Furthermore, a high degree of operational safety can be achieved. Furthermore, a high degree of flexibility in the arrangement of the operating elements can be achieved. In particular, the operating element can be arranged such that a convenient and/or intuitive operability can be achieved. In addition, common components can be used in portable power tools of different geometries in an advantageously cost-effective manner, wherein in particular only the length of the transmission unit has to be adapted when the operating unit and the fastening element are to be placed relative to each other in accordance with the geometry.

In an advantageous embodiment of the invention, it is provided that the transmission unit has at least one transmission element for connecting the actuating element and the fastening element, which transmission element is designed as a tensile force transmission element that is easily bendable, in particular as a traction cable mechanism (Seilzug) and/or a bowden cable; or as an advantageously incompressible pressure transmission element, in particular a fluid; or for example pulling and pressing a control cable, in particular a corresponding wire; or for example a flexible and/or guided rod. The transmission element is provided in particular for transmitting the movement directly to the stationary element. In this way, a reliable force-transmitting and/or flexibly positionable, in particular mechanical, connection can advantageously be provided.

In a particularly advantageous embodiment of the invention, it is provided that the transmission unit has at least one transmission element, in particular a transmission element which is directly connected to the fastening element and the actuating element. In this context, "directly connected" is to be understood in particular to mean connected directly or solely by means of one or more attachment elements, in particular without an intermediate force conversion means. The movement of the actuating element is in particular transmitted directly to the transmission element and/or the movement of the transmission element is transmitted directly to the stationary element. This makes it possible to achieve high loadability and/or structural simplicity.

A reliable protection against damage, for example against damage by impacts and/or shocks, can be achieved in particular if the transmission unit is arranged at least for the most part, in particular with regard to the volume of the transmission unit, within the housing unit. The flexible transmission section is arranged in particular at least largely within the housing unit. Alternatively or additionally, it is conceivable for the transfer unit to be arranged at least partially, in particular at least largely, on and/or in the base plate. Preferably, the housing unit has at least one guide element and/or fixing element for the transmission unit and/or for the transmission element, in particular fixed to the housing. The housing unit can have, for example, a guide element which at least partially defines the course of the transmission unit and/or which fixes the transmission unit, in particular the housing element of the transmission unit, at least in sections along its course. The expression "at least a substantial portion" is to be understood here to mean, in particular, at least 55%, advantageously at least 65%, preferably at least 75%, particularly preferably at least 85% and particularly advantageously at least 95%, but in particular also complete.

An advantageous arrangement of the components with respect to intuitive operability can be achieved in particular if the housing unit has at least one handle housing section and the transmission unit, in particular the easily bendable transmission section, is arranged at least partially, in particular at least largely, in said handle housing section. Preferably, the handle housing section constitutes at least one handle. Preferably, the transmission element extends from the handle housing section to the fixing element.

In a preferred embodiment of the invention, it is provided that the actuating element is assigned to the handle housing section. Preferably, the operating element is supported on the handle housing section. Particularly preferably, the handle housing section has at least one receiving region, in particular a receiving opening, for the operating element, the operating element preferably being arranged in the receiving region, in particular in the case of an operating element comprising at least one push button. Preferably, the operating element is provided for being actuated by a thumb in the state of holding the grip housing section. In particular, the operating element is constructed and/or arranged to be accessible and preferably operable with a thumb of a holding hand in the holding state.

In a particularly preferred embodiment of the invention, it is provided that the portable power tool, in particular the setting unit, has at least one restoring element, in particular a spring, which is provided for moving the securing element and/or the operating element back into the initial position after the actuation, and preferably the transmission unit is provided for transmitting a restoring force from the restoring element to the operating element and/or the securing element. Advantageously, the initial position corresponds to the position of the fixing element in at least one rest position. It may be particularly advantageous to enable operation with one hand. In addition, a high degree of operational safety can be achieved in this way, in particular on the basis of the autonomous fixing.

In a further embodiment of the invention, it is provided that the portable power tool has at least one further transmission unit, wherein the transmission unit and the further transmission unit are adapted to different cutting parameters, in particular a cutting depth and a cutting angle. Preferably, the further transmission unit has at least one further transmission element. Advantageously, the transmission element and the further transmission element are associated with adaptation to different cutting parameters, in particular cutting depth and cutting angle. Preferably, the aforementioned fixing element is arranged on the first guide element. Particularly preferably, the setting unit has the guide element and a fastening element, which is arranged in particular on the guide element, which are provided for setting the cutting depth. Furthermore, the setting unit preferably has at least one further guide element and a further fixing element, which is arranged in particular on the further guide element, which are provided for setting the cutting angle. Advantageously, the further fixing element is directly connected to the further transmission element. Different cutting parameters can thus be set intuitively and/or simply.

Furthermore, it is proposed that the operating unit has at least one further operating element to which the further transmission unit is assigned. Preferably, the further transmission unit is provided for transmitting a movement of the further operating element to the further stationary element. Preferably, the further transfer unit is at least partially of flexible and/or fluid-containing design. Advantageously, the further operating element is directly connected to the further transmission element. In particular, the cutting depth can be set by means of the operating element described above. Whereas the cutting angle can advantageously be set by means of the further operating element. It is also conceivable that only a single cutting parameter, for example only the cutting depth or only the cutting angle, is adjustable by means of an operating unit which is connected to the fastening element via a transmission element. Furthermore, it is conceivable that the component for setting certain cutting parameters, for example cutting depth and/or cutting angle, comprises a plurality of transmission elements and/or a plurality of guide elements and/or a plurality of fixing elements. In particular, it is conceivable for the transmission unit and/or the further transmission unit to have a plurality of transmission elements. For example, the housing unit can be guided and/or can be stationary on opposite sides in order to set at least one defined cutting parameter. It is conceivable that the operating element and the further operating element are arranged alongside one another. Advantageously, the actuating element is assigned to the handle housing section and the further actuating element is assigned to the base plate or vice versa. This advantageously makes it possible to set certain cutting parameters in accordance with the destination. Furthermore, malfunction can be thereby avoided.

It is conceivable that different transfer units and/or different transfer elements and/or different guide elements and/or different fixing elements are each configured at least substantially in accordance with one another. In this context, an "at least substantially identical" object is to be understood to mean, in particular, an object which is designed in such a way that it can each fulfill a common function and which, in its structure, apart from manufacturing tolerances, differs at most only from elements which are not essential for the common function, and is advantageously to be understood as an object which is designed identically apart from manufacturing tolerances and/or within the scope of manufacturing possibilities, wherein identical objects are also to be understood as, in particular, objects which are symmetrical to one another.

Alternatively or additionally, it is proposed: in at least one first operating state, at least one first movement of the operating element can be transmitted to the transmission element, and in at least one second operating state, at least one second movement of the operating element can be transmitted to the further transmission element and/or to the further transmission unit. Advantageously, the first movement is different from the second movement. For example, the actuating element can be moved in different, in particular vertically extending directions, which are each associated with the setting of a specific cutting parameter. It is also conceivable that the first movement corresponds to the second movement. In particular, in this case, a transmission unit is provided for transmitting the movement of the actuating element to the fastening element and advantageously simultaneously to the other fastening element. In this case, the pivoting movements in different directions for setting different cutting parameters can preferably be released and/or locked by actuating the actuating element itself. This allows intuitive adjustment of the cutting parameters and a high degree of operational safety.

The portable power tool according to the invention is not intended to be limited to the above-described applications and embodiments. The portable power tool according to the invention can in particular have a different number of individual elements, components and units than the number mentioned here in order to fulfill the functions described here. Furthermore, in the value ranges given in the publication, values within the mentioned boundaries should also be regarded as public and can be used arbitrarily.

Drawings

The remaining advantages result from the following description of the figures. Two embodiments of the invention are shown in the drawings. The figures, description and claims contain many combinations of features. The person skilled in the art can also, in line with the objective, consider the features individually and summarize them as meaningful further combinations. The figures show:

fig. 1 shows a portable power tool in a perspective side view;

fig. 2 shows a portable power tool in a schematic partial sectional illustration;

fig. 3 shows a part of the portable power tool in a perspective, partially sectional illustration;

fig. 4 shows the portable power tool in a perspective view;

fig. 5 shows the portable power tool in a further perspective view;

fig. 6 shows a further part of the portable power tool in a schematic partial sectional illustration; and

fig. 7 shows a further portable power tool in a perspective side view.

Detailed Description

Fig. 1 shows a portable power tool 10a in a perspective side view. Fig. 2 shows a portable power tool 10a in a schematic partial sectional view. The portable power tool 10a is in the present case designed as a circular saw, in particular as a handheld circular saw. The portable power tool 10a has a housing unit 12 a. Furthermore, the portable power tool 10a has a tool 44a arranged at least partially in the housing unit 12 a. The tool 44a is in the present case configured as a saw blade. The housing unit 12a has a handle housing section 30 a. The handle housing section 30a may serve as a handle. In the present case, the portable power tool 10a has an additional handle 64 a.

The portable power tool 10a has a guide unit 14a, which serves at least to guide the pivoting movement of the housing unit 12 a. In the present case, the portable power tool 10a has a base plate 42 a. The swinging motion of the housing unit 12a is a swinging motion relative to the base plate 42 a. The housing unit 12a is supported so as to be pivotable about a pivot axis 46 a. The portable power tool 10a has an adjustment unit 16a for adjusting at least one cutting parameter. In the present case, the housing unit 12a is mounted so as to be pivotable about a further pivot axis 48 a. The pivot axis 46a and the further pivot axis 48a are arranged perpendicular to one another. The adjustment unit 16a is provided for fixing the housing unit 12a in different pivoting positions. The first cutting parameters can be set by means of a pivoting movement about the pivot axis 46 a. In the present case, the first cutting parameter is the cutting depth. The second cutting parameter can be set by means of a pivoting movement about a further pivoting axis 48 a. In the present case, the second cutting parameter is the cutting angle. The guide unit 14a has a guide element 50a in the present case. The guide element 50a has a guide runner 52 a. The guide link 52a is provided for guiding the pivoting movement about the first pivot axis 46 a. The guide chute 52a defines a guide locus of a circular arc shape.

Fig. 3 shows a part of a portable power tool 10a in a perspective, partially sectional illustration. The setting unit 16a has a fixing element 18a arranged on the guide unit 14 a. In the present case, the fixing element 18a is arranged on the guide element 50 a. The fastening element 18a is in the present case designed as a latching element. In the resting state of the housing unit 12a, the fastening element 18a latches with the guide element 50 a. The fixing member 18a is provided for fixing the position of the housing unit 12 a. Furthermore, the fastening element 18a is provided for limiting a movement of the housing unit 12a, in particular a movement relative to the base plate 42 a. The fastening element 18a is mounted displaceably in a direction 60a parallel to the pivot axis 46 a. The guide element 50a has a plurality of latching

elements

56a, 58a for the fastening element 18a, which are not all provided with reference numerals for reasons of clarity. The

detent elements

56a, 58a are arranged along the guide link 52 a. The latching

elements

56a, 58a define different latching positions of the fastening element 18a, which correspond to different first cutting parameters. In the secured position, the securing element 18a is connected to at least one of the

latching elements

56a, 58 a. Fig. 3 shows the fastening element 18a in the fastening position. In the unset position, the fixation element 18a is removed from the guide element 50 a. The latching connection between the fixing element 18a and the

respective latching element

56a, 58a is released in the unfixed position. The portable power tool 10a has a restoring element 38a, which is provided to move the securing element 18a back into the starting position after actuation. The initial position corresponds to the fixed position. The restoring element 38a is configured as a spring. Restoring element 38a generates a fixing force which presses fixing element 18a against guide element 50a and/or against guide element 50 a.

As shown in particular in fig. 1 and 2, the portable power tool 10a has an operating unit 20a, which comprises at least one operating element 22a at least for acting on the fastening element 18 a. In the present case, the operating element 22a is designed as a pivotably mounted pushbutton. During actuation, the actuating element 22a is pressed upward away from the base plate 42a, for example by the thumb of the user.

The portable power tool 10a has an at least partially flexible transmission unit 24a, which is provided to transmit the movement of the actuating element 22a to the stationary element 18 a. In the present case, the tensile force generated by pressing against the operating element 22a is transmitted by the transmission unit 24a to the stationary element 18 a. The transmission unit 24a is provided for moving the fixing element 18a as a function of the movement of the actuating element 22 a. The transfer unit 24a follows a curved course at least in sections.

The transmission unit 24a has a transmission element 26a for connecting the actuating element 22a and the fastening element 18a, which transmission element is designed as a tensile force transmission element that is easily bendable. In the present case, the transmission element 26a is configured as a leash mechanism. It is conceivable for the transmission element to be designed as a bowden cable. Furthermore, as mentioned above, it is also conceivable for the transfer unit to be designed at least partially to contain a fluid, in particular to conduct a fluid. In this case, in particular, the transmission element can be designed as an incompressible pressure transmission element, for example as a filled fluid line.

The transmission element 26a is directly connected to the stationary element 18a and to the actuating element 22 a. In the present case, the transmission element 26a is attached to the suspension lever 54a of the operating element 22 a. Furthermore, the transmission element 26a is attached to the stationary element 18 a. The restoring element 38a moves the actuating element 22a back into its initial position after actuation by means of a direct connection of the actuating element 22a and the stationary element 18 a. The transmission element 26a transmits the restoring force of the restoring element 38a to the actuating element 22 a.

The transmission unit 24a is arranged at least largely in the housing unit 12 a. The transmission unit 24a is arranged at least largely within the handle housing section 30 a. The operating element 22a is associated with the handle housing section 30 a. The handle housing section 30a has a receiving opening 62a, in which the actuating element 22a is arranged.

Fig. 4 shows the portable power tool 10a in a perspective view. Fig. 5 shows the portable power tool 10a in a further perspective view. For clarity reasons, the additional handle 64a is not shown in fig. 5 and 6. Fig. 6 shows a further part of the portable power tool 10a in a schematic sectional illustration. The guide unit 14a has a first further guide element 66a and a second further guide element 68 a. A first further guide element 66a and a second further guide element 68a are provided for guiding the pivoting movement about the further pivot axis 48 a. The adjustment unit 16a has a further fastening element 32 a. A further fixing element 32a is arranged on the guide unit 14 a. A further fixing element 32a is arranged on the first further guide element 66 a. Similar to the fastening element 18a and the guide element 50a, the further fastening element 32a latches with the first further guide element 66 a. The portable power tool 10a has a further restoring element 40a, which presses the further securing element 32a into a securing position against the first further guide element 66 a. In addition, the adjustment unit 16a has in the present case a second further fastening element, not shown, which is assigned to the second further guide element 68 a. The first further guide element 66a and the second further guide element 68a define a plurality of different latching positions for the further fixing element 32a or for the second further fixing element, which latching positions correspond to different second cutting parameters. In the present case, the first further guide element 66a has a guide runner 74 a. Furthermore, the second further guide element 68a has a latching rail 76 a.

The portable power tool 10a has a further transmission unit 36 a. The further transfer unit 36a is assigned to the adaptation of the second cutting parameter. The actuating unit 20a has a further actuating element 34a to which a further transmission unit 36a is assigned. A further actuating element 34a is associated with the base plate 42 a. A further operating element 34a is arranged on the rear side 72a of the portable power tool 10 a. The other operating element 34a is arranged on the base plate 42 a. In the present case, the further operating element 34a is configured as a rocker arm. The further actuating element 34a can be actuated independently of the actuating element 22 a. The further transmission unit 36a has a first further transmission element 28a and a second further transmission element 70a, which are connected to the further fastening element 32a or to the second further fastening element. In the present case, these

further transmission elements

28a, 70a are likewise designed as a traction cable mechanism, in particular as bowden cables, but can also be fluid lines, for example. When the further actuating element 34a is actuated, the movement of the further actuating element 34a is transmitted to the further fastening elements 32a via the

further transmission elements

28a, 70 a.

Another embodiment of the present invention is shown in fig. 7. The following description and the figures are substantially limited to the differences between the exemplary embodiments, wherein, with regard to components having the same name, in particular with regard to components having the same reference numerals, reference may in principle also be made to the figures and/or descriptions of the other exemplary embodiments, in particular of fig. 1 to 6. To distinguish between these embodiments, the letter a is placed after the reference numerals of the embodiments in fig. 1 to 6. In the embodiment of fig. 7, the letter a is replaced by the letter b.

Fig. 7 shows a further portable power tool 10b in a perspective side view. Similarly to the portable power tool 10a, the further portable machine tool 10b has a setting unit 16b and an operating unit 20b for setting the first cutting parameter and the second cutting parameter. The first cutting parameters can be set by means of the operating elements 22b of the operating unit 20 b. The second cutting parameter can be set by means of a further operating element 34b of the operating unit 20 b. The further operating element 34b is arranged on a front side 78b of the further portable power tool 10 b. The further operating element 34b is arranged on a base plate 42b of the further portable power tool 10 b.

As mentioned above, it is also conceivable for the actuating element 22b to be provided, for example, for opening and closing the setting of two cutting parameters. In this case, the respective actuating element is advantageously connected to all the corresponding fastening elements via the respective transmission unit.

Claims

1. A portable power tool comprising:

-a housing unit (12 a);

-at least one guiding unit for guiding at least a swinging movement of the housing unit (12 a);

-at least one setting unit (16 a; 16b) for setting at least one cutting parameter, the setting unit having at least one fixing element (18a, 32a) arranged on the guide unit for fixing the position of the housing unit (12a) and/or for limiting the movement of the housing unit (12 a); and

at least one operating unit having at least one operating element for acting at least on the fixing element (18a, 32a),

at least one transmission unit which is at least partially flexible and is provided for transmitting a movement of the actuating element to the fastening element (18a, 32a),

wherein the guide unit comprises at least one guide element for the housing unit (12a), which guide element is designed as a sliding groove, a guide groove or a guide rail,

it is characterized in that the preparation method is characterized in that,

the fastening element (18a, 32a) is designed as a latching element, wherein the transmission unit (24a, 36a) has at least one transmission element (26a, 28a, 70a) for the connection of the operating element to the fastening element (18a, 32a), which is designed as a tensile force transmission element that is easily bendable in the form of a leash mechanism and/or a bowden cable or as an incompressible pressure transmission element, wherein the transmission unit is provided for transmitting at least a part of an operating force acting on the operating element to the fastening element as an actuating force, wherein the transmission unit is arranged at least largely in the housing unit (12 a).

2. The portable power tool according to claim 1, characterized in that the transmission unit (24a, 36a) has at least one transmission element (26a, 28a, 70a) which is directly connected to the fastening element (18a, 32a) and to the operating element.

3. Portable power tool according to claim 1 or 2, characterized in that the housing unit (12a) has at least one handle housing section (30a) and in that the transmission unit is arranged at least partially in the handle housing section (30 a).

4. Portable power tool according to claim 3, characterized in that the operating element is associated with the handle housing section (30 a).

5. Portable power tool according to claim 1 or 2, characterized in that at least one restoring element (38a, 40a) is provided, which is provided for moving the fixing element (18a, 32a) and the actuating element back into the initial position after actuation.

6. Portable power tool according to claim 1 or 2, wherein at least one further transmission unit is provided, wherein the transmission unit and the further transmission unit are adapted to different cutting parameters.

7. Portable power tool according to claim 6, characterized in that the operating unit has at least one further operating element, to which the further transmission unit is assigned.

8. Portable power tool according to claim 7, characterized in that at least one base plate (42 a; 42b) is provided, to which the further operating element is assigned.

9. The portable power tool of claim 1 or 2, wherein the portable power tool is a circular saw.

10. Portable power tool according to claim 1 or 2, characterized in that the cutting parameters comprise a cutting depth and/or a cutting angle.

11. The portable power tool of claim 5, wherein the return element is a spring.