Machine tool with dust collecting box, and dust collecting box

Abstract

The invention relates to a machine tool (10) which can be connected to an elongated tool (12) extending forwards in a spatial direction, wherein the machine tool is designed to drive the tool in a rotating and / or percussive manner. The machine tool comprises a dust collecting box (50) for suctioning dust-loaded air (14) out of a working region (16) of the machine tool, wherein the dust can be filtered out of the dust-loaded air by means of a filter (52). A virtual central plane (20) can be placed through the main part (18) of the machine tool and / or the dust collecting box, said virtual central plane dividing the main part into two halves. An inlet (56) of the dust collecting box for the dust-loaded air is predominantly arranged on one side of the virtual central plane, and the filter of the dust collecting box is predominantly arranged on the other side of the virtual central plane. A second aspect of the invention relates to a dust collecting box for a machine tool in which the inlet and the filter of the dust collecting box are provided on different sides, i.e. in different halves of the dust collecting box.

Description

[0001] MACHINE TOOL WITH DUST COLLECTION BOX AND DUST COLLECTION BOX

[0002] The present invention relates to a machine tool that can be connected to an elongated tool extending forward in a spatial direction, wherein the machine tool is configured to drive the tool in a rotating and / or percussive movement. The machine tool comprises a dust collection box for extracting dust-laden air from a work area of ​​the machine tool, wherein the dust can be filtered out of the dust-laden air by means of a filter. A virtual center plane can be laid through a main body of the machine tool and / or the dust collection box, wherein the virtual center plane divides the main body into two halves, wherein an inlet of the dust collection box for the dust-laden air is arranged predominantly on one side of the center plane and the filter of the dust collection box is arranged predominantly on the other side of the center plane.In a second aspect, the invention relates to a dust collection box for a machine tool, wherein the inlet and the filter of the dust collection box are located on different sides, ie in different halves of the rod collection box.

[0003] Background of the invention:

[0004] In the field of machine tools, particularly in the field of hammer drills, dust collection boxes are known that can be connected to the machine tool in order to extract dust-laden air from the work area of ​​the machine tool. Machine tools can be connected to tools with which work can be carried out. In the case of a hammer drill, the hammer drill can be connected to an elongated tool that can be driven by the device to perform a rotating and / or percussive movement. There are mainly two different types of so-called "onboard" dust collection boxes for machine tools: On the one hand, there are dust collection boxes in which the extraction duct between the work area and the dust collection box is guided along the tool on one side of the machine tool.On the other hand, dust collection boxes are known in which the extraction duct is guided in or near a plane, where the plane contains a working axis and a handle axis of the machine tool. This plane is therefore preferably also referred to as the "working plane" of the machine tool. The working axis corresponds to the axis in which the machine tool tool is located, with the handle axis containing the main handle of the machine tool. Dust collection boxes with the extraction duct guided laterally often have good extraction performance, but are often very large and unwieldy, so that the machine tool, when connected to such a dust collection box, also becomes very large and unwieldy. This can make handling the machine tool difficult and make working with it uncomfortable and laborious.In addition, machine tools with such dust collection boxes often have to be disassembled before transport in a transport crate in order to store the machine tool and the dust collection box in the transport crate. However, this disassembly and storage can be labor-intensive and therefore undesirable.

[0005] In dust collection boxes where the extraction duct is located at the working level of the machine tool, the filter for filtering out the dust from the dust-laden air is often located on the front or rear wall of the dust collection box. This can disadvantageously cause dust to collect on the filter when the machine tool is working on a surface such as a floor or ceiling, i.e., overhead. This can quickly clog the filter, so that, for example, only a small number of holes can be drilled with the machine tool before the filter needs to be replaced or cleaned.

[0006] The object underlying the present invention is to overcome the above-described deficiencies and disadvantages of the prior art and to provide a machine tool that combines the advantages of known designs. In particular, it should be possible to create the largest possible number of drill holes in each application of the machine tool before the filter has to be replaced or cleaned. Furthermore, the dust collection box to be provided should be particularly compact and handy in order to provide a handy and convenient machine tool. Experts would welcome the provision of a cost-effective and easily replaceable filter for the dust collection box and the particularly tight design of the dust collection box in order to optimally utilize the available suction power and avoid leaks.

[0007] The object is achieved by the subject matter of the independent claims. Advantageous embodiments of the subject matter of the independent claims can be found in the dependent claims. Description of the invention:

[0008] According to the invention, a machine tool is provided which can be connected to an elongated tool extending forward in a spatial direction. The machine tool is configured to drive the tool in a rotating and / or percussive movement. The machine tool comprises a dust collection box and is detachably connectable thereto, wherein the dust collection box is configured to extract dust-laden air from a work area of ​​the machine tool and to filter the dust from the dust-laden air by means of a filter, so that the dust can be collected in an interior of the dust collection box until emptied. A virtual center plane can be placed through a main body of the machine tool and / or the dust collection box, wherein the virtual center plane is configured to divide the main body into a first side and a second side in a sectional view viewed from a front spatial direction.An inlet of the dust collection box for the dust-laden air is arranged predominantly on one side of the central plane, while the filter of the dust collection box is arranged predominantly on the other side of the central plane.

[0009] It is preferred within the meaning of the invention that the first side of the main body of the machine tool and / or the dust collection box can be referred to as the left side, while the second side of the main body of the machine tool and / or the dust collection box can be referred to as the right side. In this case, the main body of the machine tool and / or the dust collection box is preferably viewed from a front spatial direction, wherein the front spatial direction is preferably determined by the position of the tool of the machine tool, while the main body of the machine tool preferably determines its rear region of the machine tool and the rear spatial direction. The main body can be a main body of the machine tool, which comprises, for example, the motor, the impact mechanism and / or the battery of the machine tool.Within the meaning of the invention, it may also be preferred for the main body to be the main body of the dust collection box. Preferably, the virtual center plane divides the main body of the machine tool or the dust collection box into two sides or halves.

[0010] According to the invention, it is preferred that a larger part of the inlet of the dust collection box is arranged on one side of the machine tool or its main body, while a smaller part of the inlet of the dust collection box is arranged on the other side of the machine tool or its main body. Preferably, the larger part of the inlet of the dust collection box can be referred to as the "predominant part of the inlet of the dust collection box" according to the invention.

[0011] It is preferred in the sense of the invention that the larger part, ie the predominant part of the filter is arranged on one side of the machine tool or its main body, while the smaller part of the filter is arranged on the other side of the machine tool or its main body, wherein the larger parts of the inlet and the filter are arranged on opposite sides of the main body of the machine tool.

[0012] The formulation that a "predominant" part of an object is located on one side of the machine tool or the dust collection box preferably means, within the meaning of the invention, that the object is located entirely or partially, and if partially, with the larger of the at least two parts, on one side or half of the machine tool or the dust collection box. The formulation of the "predominant part" includes that the object is arranged entirely on one side or half of the machine tool or the dust collection box. Within the meaning of the invention, it is preferred that a larger of at least two parts of the object is arranged on one half of the machine tool or the dust collection box.

[0013] In the sense of the invention, this preferably means that the larger part of the inlet and the smaller part of the filter are arranged on one side of the main body of the machine tool and / or the dust collection box, while the larger part of the filter and the smaller part of the inlet are arranged on the other, i.e. opposite side of the main body of the machine tool and / or the dust collection box. The separation into the two halves of the main body occurs through the virtual center plane of the machine tool and / or the dust collection box, which can preferably coincide with the previously described working plane of the machine tool. In the sense of the invention, it is preferred that, for example, the tool of the machine tool or the axis of the tool lies in the working plane of the machine tool.Furthermore, within the meaning of the invention, it may be preferred that the virtual center plane of the machine tool intersects the handle of the machine tool and, if the machine tool is a battery-operated machine tool, the battery of the machine tool, and divides it essentially in the middle into two similar or symmetrical halves. The handle of the machine tool may preferably be a so-called D-handle, which can be gripped by a user of the machine tool in order to grasp the machine tool and guide it during work.

[0014] The invention advantageously makes it possible to drill a particularly large number of holes without having to replace or clean the filter. This advantage of the machine tool can be achieved in particular in all three main applications of the machine tool (working on the floor, on the wall, and overhead on the ceiling), because in none of the three main applications is the filter covered with dust, which would quickly clog or block it. Due to the arrangement and design of the dust collection box, the dust advantageously falls next to the filter in the main applications, so that "flooding" or "sugaring" of the filter is avoided by the invention.

[0015] A further advantage of the invention is that it allows for the provision of a particularly compact and handy dust collection box. This also allows the system consisting of the machine tool and the dust collection box to be designed particularly compactly and conveniently, making handling the machine tool considerably easier for the user.

[0016] With the invention, the dust-laden air can initially flow from the inlet of the dust collection box into the interior of the dust collection box or be sucked in, where a portion of the dust separates from the air stream and settles on the floor of the dust collection box. The air then flows through the filter, with the dust collection box comprising a suction unit to generate the air stream, which, in the proposed arrangement of the dust collection box in the machine tool, is the last air stream to pass through. At this point, the air stream is already essentially dust-free, because the dust has either separated inside the dust collection box or has been filtered out of the air stream by the filter. In particular, the proposed arrangement of the dust collection box within the machine tool enables particularly good suction performance to be achieved.The proposed arrangement of the dust collection box on the machine tool is referred to as "asymmetric" within the meaning of the invention. Preferably, the dust collection box of the proposed machine tool is referred to as an "asymmetric dust collection box" within the meaning of the invention, wherein the asymmetric arrangement of the components of the dust collection box is characterized in that the inlet of the dust collection box is arranged predominantly on one side of the main body of the machine tool and / or the dust collection box, while the filter of the dust collection box is arranged predominantly on the other or opposite side of the main body of the machine tool and / or the dust collection box.In particular, the asymmetrical arrangement of the dust collection box ensures that the dust collection box filter is not covered by dust in any of the machine tool's three main applications (working on the floor, on the wall, and overhead on the ceiling). This allows the machine tool to drill a large number of holes without having to clean or replace the dust collection box filter. This significantly improves the working efficiency of the proposed machine tool.

[0017] According to the invention, it is preferred that the dust-laden air be guided from the work area through an extraction duct to the inlet of the dust collection box, with the virtual center plane running through the extraction duct. In other words, the extraction duct is located centrally in the machine tool or in the dust collection box, which is expressed by the fact that the virtual center plane intersects the extraction duct and conceptually divides it into two essentially symmetrical halves. The advantages associated with the central arrangement of the extraction duct around the virtual center plane of the main body in dust collection boxes can thus also be realized with the present invention. This includes, in particular, a compact design that enables good and easy handling of the machine tool.

[0018] According to the invention, it is preferred that the suction channel be telescopic. This allows the suction channel to be advantageously adapted to different tool lengths of the machine tool or to different desired depths of the borehole.

[0019] According to the invention, it is preferred that the machine tool has a first seal, wherein the first seal is configured to direct the dust-laden air into the dust collection box. This first seal is preferably located in the region of the inlet of the dust collection box.

[0020] According to the invention, it is preferred that the dust collection box has a second seal, wherein the second seal is configured to direct the cleaned air from the filter to a suction unit of the dust collection box. The second seal is preferably located in an upper region of the dust collection box.

[0021] According to the invention, it is preferred that the machine tool has a first seal for directing the dust-laden air into the dust collection box and a second seal for directing the cleaned air from the filter to a suction unit of the dust collection box, wherein the first seal and the second seal are oriented in a substantially identical spatial direction. According to the invention, this preferably means that the first and second seals are substantially parallel and point in substantially the same spatial direction.The terms "essentially parallel" or "essentially in the same spatial direction" do not represent unclear terms for the person skilled in the art, because the person skilled in the art knows that, for example, the terms "essentially parallel" may include small deviations from exact mathematical parallelism, such small deviations being, for example, in a range of + / - 5 degrees of exact mathematical parallelism.

[0022] Within the meaning of the invention, it is particularly preferred that the first seal and the second seal are arranged at the same height within the machine tool or within the dust collection box. This allows the seals to be manufactured particularly cost-effectively. Furthermore, it has been shown that seals arranged in the manner described are particularly tight and offer a good sealing effect while requiring little effort. This allows the existing suction power of the dust collection box's suction unit to be utilized particularly effectively, effectively preventing unwanted leaks.

[0023] Furthermore, in this way, an air guide element can be designed as a single piece, which can further improve the already good sealing effect of the seals of the dust collection box. It is therefore preferred within the meaning of the invention that the dust collection box has an air guide element, wherein the air guide element is designed as a single piece. The air guide element can, for example, be designed as an air baffle. However, it can also be preferred within the meaning of the invention that the air guide element comprises plastic or is made of plastic. The air guide element can have a perforated base through which the air flow can penetrate into an intake chamber of the suction unit of the dust collection box.

[0024] It is preferred in the sense of the invention that the dust collection box has a third seal, wherein the third seal is designed to seal an upper region of the dust collection box from a lower region of the dust collection box.

[0025] According to the invention, it is preferred that at least one of the seals is integrated into a filter frame of the dust collection box. According to the invention, two seals, and particularly preferably all three seals, are integrated into a filter frame of the dust collection box. The integration of the seals into the filter frame results in regular replacement of the seals of the dust collection box, so that the invention can regularly ensure a "as good as new" sealing effect of the seals of the dust collection box. It has been shown that regular replacement of the seals of the dust collection box can advantageously significantly extend their service life. A filter made of folded filter paper is preferably used in the dust collection box. The filter designed in this way preferably has slats through which the air stream to be cleaned flows.Such a filter can preferably be referred to as a louvre filter within the meaning of the invention. The proposed arrangement of the filter in the dust collection box advantageously ensures that the direct path or the shortest connection from the inlet of the dust collection box towards the filter runs essentially parallel to a normal direction of the filter louvers. This advantageously results in the initially dust-laden airflow essentially only having direct contact with the outer louver of the filter and can thus only contaminate and clog these. In order to reach the inner louvers, it is preferred within the meaning of the invention for the airflow to be deflected several times. This can reduce the dust load of the airflow and filter the air. This particularly prevents the inner filter layers of the filter from becoming contaminated and clogged.It is preferred in the sense of the invention that the filter is designed as a lamella filter, wherein the direct path and / or the shortest connection through the dust collection box hits the lamellae of the lamella filter essentially perpendicularly.

[0026] It has been shown that by designing the filter as a louvre filter and by guiding the airflow through the dust collection box, a filter with fewer louvres can be used than in conventional dust boxes, as known from the prior art. This allows the filter to be designed to be particularly compact and space-saving, and the dust collection box as a whole to be kept compact. Furthermore, the manufacturing costs for the filter can be reduced by reducing the number of louvres. Furthermore, it has been shown that the airflow can be positively influenced by the proposed arrangement and design of the filter, as a particularly large contact area is provided between the filter and the airflow.

[0027] In a second aspect, the invention relates to a dust collection box for a proposed machine tool, wherein the dust collection box is configured to extract dust-laden air from a working area of ​​the machine tool and to filter the dust from the dust-laden air by means of a filter, so that the dust can be collected in an interior of the dust collection box until emptied. A virtual center plane can be placed through the dust collection box, wherein the virtual center plane is configured to divide the dust collection box into a first side and a second side in a sectional view viewed from a front spatial direction, wherein an inlet of the dust collection box for the dust-laden air is arranged predominantly on one side of the dust collection box, while the filter of the dust collection box is arranged predominantly on the other side of the dust collection box.The terms, definitions and technical advantages introduced for the machine tool preferably apply analogously to the dust collection box.

[0028] Preferably, the virtual central axis divides the dust collection box or its main body into two halves, preferably referred to as the first half and the second half of the dust collection box. The halves of the dust collection box are preferably substantially the same or similar in size.

[0029] According to the invention, it is preferred that the first side of the dust collection box be referred to as the left side, while the second side of the dust collection box be referred to as the right side. The dust collection box is viewed from a front spatial direction, with the front or front spatial direction of the dust collection box preferably being determined by the position of the filter, and the rear or rear spatial direction of the dust collection box being determined by the position of the inlet for the dust-laden air.

[0030] According to the invention, it is preferred that a larger part of the inlet of the dust collection box is arranged on one side of the dust collection box, while a smaller part of the inlet of the dust collection box is arranged on the other side of the dust collection box. According to the invention, it is further preferred that the larger part, i.e., the predominant part of the filter, is arranged on one side of the dust collection box, while the smaller part of the filter is arranged on the other side of the dust collection box, with the larger portions of the inlet and the filter being arranged on opposite sides of the dust collection box.

[0031] According to the invention, it is preferred that at least one seal of the dust collection box be integrated into a filter frame of the dust collection box. Furthermore, according to the invention, it may be preferred that the filter be designed as a louvre filter, with the air flow through the dust collection box striking the louvres of the louvre filter essentially perpendicularly. Further advantages will emerge from the following description of the figures. The figures, the description, and the claims contain numerous features in combination. Those skilled in the art will expediently consider the features individually and combine them into useful further combinations.

[0032] In the figures, identical and similar components are numbered with the same reference numerals.

[0033] They show:

[0034] Fig. 1 Front view of a preferred embodiment of the dust collection box with virtual center plane

[0035] Fig. 2 Side view of a preferred embodiment of the dust collection box

[0036] Fig. 3 schematic representation of a preferred embodiment of a machine tool, as well as the clamping of the virtual center plane

[0037] Fig. 4 schematic representation of a preferred embodiment of a machine tool with dust collection box

[0038] Fig. 5 schematic representation of a preferred embodiment of a machine tool with dust collection box, as well as its inlet and outlet areas

[0039] Fig. 6 further schematic representation of a preferred embodiment of a machine tool with dust collection box, as well as its inlet and outlet areas

[0040] Fig. 7 schematic representation of a preferred dust collection box and its components

[0041] Implementation examples and figure descriptions:

[0042] Figure 1 shows a front view of a preferred embodiment of the dust collection box 50 with a virtual center plane 20. As can be seen from Figure 1, the virtual center plane 20 divides the dust collection box 50 into two halves 22, 24 of essentially the same or similar size. The first or left half 22 in the embodiment shown in Figure 1 comprises the majority of the filter 52 of the dust collection box 50, while the second or right half 24 of the dust collection box 50 comprises the majority of the inlet 56 for the dust-laden air 14 (see Figure 5). The dust collection box 50 has an inner region 54, wherein the inner region 54 of the dust collection box 50 preferably serves as a dust collection container. The inner region 54 of the dust collection box 50 or the dust collection box 50 can be divided into an upper region 66 and a lower region 68 by a third seal 34.The filter 52 of the dust collection box 50 is preferably formed by a louvre filter with louvres 64.

[0043] The dust-laden air 14 is sucked into the work area 16 (see Fig. 4) of the machine tool 10 (see Fig. 3) and transported via the suction duct 26 toward the inlet 56 of the dust collection box 50. The dust-laden air 14 passes through the inlet 56 and thus enters the interior 54 of the dust collection box 50, where the majority of the dust settles on the floor or in the lowest part of the dust collection box 50, depending on the working direction. The air flow is sucked through the subsequent filter 52 toward the suction unit 58. From there, the air enters the intake chamber of the fan 58 through a perforated base of the air guide element 60. After the air has been brought to an increased pressure level by the suction unit 58, it flows out of the dust collection box 50 through outlet slots.

[0044] Fig. 1 also shows the first seal 30 and the second seal 32. The first seal 30 is symbolized by white blocks, while the second seal 32 is symbolized by black blocks. Fig. 1 also shows the filter frame 62, in which the seals 30, 32, and 34 can be integrated.

[0045] Figure 2 shows a representation of a preferred embodiment of the dust collection box 50 with suction channel 26 and dust collection container 54. Furthermore, Figure 2 shows a perforation 72 in the region of the inlet area 56 of the dust collection box 50, as well as the filter frame 62.

[0046] Fig. 3 shows a schematic representation of a preferred embodiment of a machine tool 10, as well as the clamping of the virtual center plane 20. The virtual center plane 20 is preferably spanned by a first axis A and a second axis B. The first axis A is preferably the rotation and / or impact axis of the machine tool 10. The second axis B is preferably the motor or main handle axis of the machine tool 10. The first axis A and the second axis B are preferably perpendicular to one another and thus clamp the virtual center plane 20.

[0047] Fig. 4 shows a schematic representation of a preferred embodiment of a machine tool 10 with a dust collection box 50. Fig. 4 shows the tool 12, the handle 28, the suction channel 26 and the working area 16 of the machine tool 10. The third axis C preferably runs through the suction channel 26 and, in the exemplary embodiment of the invention shown in Fig. 4, runs essentially parallel to the first axis A of the machine tool 10. The first axis A and the third axis C run essentially perpendicular to the second axis B. The dust-laden air 14 is sucked through the suction channel 26 from the working area 16 of the machine tool 10 in the direction of the dust collection box 50. The reason for this is the suction unit 58 of the dust collection box 50, which generates a negative pressure and thus a suction flow. The suction duct 26 has a flow cross-section SQ through which the dust-laden air 14 flows towards the dust collection box 50.The axis C, which preferably runs centrally or centrally through the extraction channel 26, is preferably perpendicular to the flow cross-section SQ of the extraction channel 26. It is preferred within the meaning of the invention that the dust-laden air 14 flows along the third axis C, so that a flow direction of the dust-laden air and the third axis C run essentially parallel or collinear to one another. It is preferred within the meaning of the invention that the second axis B runs through the motor 36 of the machine tool 10. Alternatively, the second axis B preferably runs through the handle 28 of the machine tool 10. This handle 28 can preferably be designed as a so-called pistol grip.

[0048] Fig. 4 also shows a preferred embodiment of the dust collection box 50. The dust collection box 50 has a lower region 68 with an inlet 56, a filter 52 and an outlet 70, as well as an upper region 66. The dust-laden air passes from the extraction duct 26 of the machine tool 10 via the inlet 56 into the dust collection box 50. There, some of the dust can settle in the lowest region of the dust collection box 50, with the air being sucked further towards the suction unit 58 or flowing there due to the negative pressure generated by the suction unit 58. The air passes through the transition region between the lower region 68 and the upper region 66 of the dust collection box 50, with the filter 52 being arranged in this transition region. The filter 52 is designed to filter the dust-laden air so that, in particular, low-dust or filtered air reaches the upper region 66 of the dust collection box 50.

[0049] The dust collection box 50 can have various seals 30, 32, 34, wherein the first seal 30 is configured to direct the dust-laden air 14 into the dust collection box 50. The second seal 32 can direct the cleaned air from the filter 52 to a suction unit 58 or fan 58 of the dust collection box 50. The third seal 34 is configured to divide the dust collection box 50 into an upper region 66 and a lower region 68 (see Figs. 4 to 7). The lower region 68 of the dust collection box 50 comprises the inlet 56 and the outlet 70 of the dust collection box 50, wherein the filter 52 is arranged in the region of the outlet 70. The filter 52 represents the transition between the lower region 68 and the upper region 66 of the dust collection box 50, wherein dust-laden air is present in the lower region 68 and dust-free air is present in the upper region 66.The filter 52 is preferably designed as a louvre filter with louvres 64 and is configured to filter dust from the airflow. This reduces the dust load of the air as it passes through the filter 52 or during the transition from the lower region 68 to the upper region 66 of the dust collection box 50.

[0050] Fig. 5 shows a schematic representation of a preferred embodiment of a machine tool 10 with a dust collection box 50, as well as its inlet area 56 and outlet area 70. On the left side of Fig. 5, a preferred embodiment of the machine tool 10 is shown, which has a tool 12, a handle 28 and an extraction channel 26. In the work area 16 of the machine tool 10, a substrate (not shown) can be machined, whereby dust and dirt are generated during this processing, which can be extracted using the dust collection box 50.

[0051] On the upper right side of Fig. 5, a section through the machine tool 10 is shown. The sectional view shows the machine tool 10 in the upper area and the dust collection box 50 below it. The dust collection box 50 is divided into an upper area 66 and a lower area 68, with the filter 52 of the dust collection box 50 arranged between the upper area 66 and the lower area 68. In addition, a third seal 34 can be provided in the transition area between the lower area 68 and the upper area 66 of the dust collection box 50, which seals the areas 66, 68 of the dust collection box 50 from one another. By providing the third seal 34, the area 68 of the dust collection box 50, in which dust-laden air is located, can be sealed off from the area 66 of the dust collection box 50, in which dust-free air is located. Fig. 5 also shows the virtual plane 20, which contains the dust collection box 50 ordivides the machine tool 10 into a first half 22 and a second half 24. The predominant part of the filter 52 of the dust collection box 50 is preferably located in the first half 22, while the predominant part of the inlet region 56 of the dust collection box is provided in the second half 24. The inlet region 56 of the dust collection box has a flow or inlet cross-section which can have a first centroid SP1. If the inlet cross-section is rectangular, for example, the first centroid SP1 can, for example, correspond to the intersection point of the diagonals of the inlet cross-section. The inlet region 56 and its first centroid SP1 are preferably located in the first half 22 of the machine tool 10 and the dust collection box 50, respectively.In an analogous manner, a second center of gravity SP2 can be defined for the outlet area 70 of the dust collection box 50, wherein the outlet area 70 and its second center of gravity SP2 are preferably present in the second half 24 of the machine tool 10 or the dust collection box 50.

[0052] On the lower right side of Fig. 5, a further section through the machine tool 10 is shown, this sectional view showing the transition region between the lower region 68 and the upper region 66 of the dust collection box 50. The filter 52 and the third seal 34 of the dust collection box 50 can be arranged in this transition region. In particular, the lower right side of Fig. 5 shows the arrangement of the inlet region 56 and the outlet region 70 of the dust collection box 50 on the different sides 22, 24 of the dust collection box 50. While the inlet region 56 and the first center of gravity SP1 of the dust collection box 50 are located on the first side 22 of the virtual center plane 20, the outlet region 70 and the second center of gravity SP2 of the dust collection box 50 are located on the second side 24 of the virtual center plane 20.

[0053] Fig. 6 shows a further schematic representation of a preferred embodiment of a machine tool 10 with a dust collection box 50, as well as its inlet region 56 and outlet region 70. In particular, Figure 6 shows the lower region 68 of the dust collection box 50 in order to illustrate the position of the inlet region 56 and the first center of gravity SP1, as well as the position of the outlet region 70 and the second center of gravity SP2. Furthermore, Fig. 6 shows the third seal 34, which can represent a sealing plane for sealing the upper region 66 and the lower region 68 of the dust collection box 50 from one another.

[0054] Fig. 7 shows a schematic representation of a preferred embodiment of the dust collection box 50 and its components. In particular, Fig. 7 shows the virtual center plane 20, which divides the dust collection box 50 into a first half 22 and a second half 24. The filter 52, the outlet region 70 and its center of gravity SP2 are located on the first side 22 of the dust collection box 50, while the inlet region 56 and its center of gravity SP1 are located on the second side 24. While the virtual center plane 20 divides the dust collection box 50 or the machine tool 10 into two halves 22, 24 in the vertical direction, the dust collection box 50 is divided horizontally into an upper region 66 and a lower region 68. The filter 52 and the third seal 34 of the dust collection box 50 can be located in the transition region between the regions 66, 68 of the dust collection box 50.

[0055] List of reference symbols

[0056] 10 Machine tool

[0057] 12 tools

[0058] 14 dust-laden air

[0059] 16 Working area of ​​the machine tool

[0060] 18 Main body of the machine tool

[0061] 20 virtual middle level

[0062] 22 first page or first half

[0063] 24 second page or second half

[0064] 26 Suction channel

[0065] 28 Handle of the machine tool, especially pistol grip

[0066] 30 first seal

[0067] 32 second seal

[0068] 34 third seal

[0069] 36 Machine tool motor

[0070] 50 dust collection box

[0071] 52 filters

[0072] 54 Interior of the storage collection box

[0073] 56 Inlet of the storage collection box

[0074] 58 Suction unit of the dust collection box

[0075] 60 air guide element

[0076] 62 filter frames

[0077] 64 slats 66 upper area of ​​the dust collection box

[0078] 68 lower area of ​​the dust collection box

[0079] 70 Outlet of the dust collection box

[0080] 72 Perforation in the area of ​​the inlet area of ​​the dust collection box

[0081] A first axis (rotation and / or impact axis)

[0082] B second axis (motor or main handle axis)

[0083] C third axis (axis through the suction channel)

[0084] SQ flow cross-section

[0085] SP1 first centroid, centroid of the inlet cross-section

[0086] SP2 second centroid, centroid of the outlet cross-section

Claims

Patent claims 1. A machine tool (10) connectable to an elongated tool (12) extending forward in a spatial direction, wherein the machine tool (10) is configured to drive the tool (12) to a rotating and / or percussive movement, wherein the machine tool (10) comprises a dust collection box (50) and is detachably connectable thereto, wherein the dust collection box (50) is configured to extract dust-laden air (14) from a work area (16) of the machine tool (10) and to filter the dust from the dust-laden air (14) by means of a filter (52), so that the dust can be collected in an interior space (54) of the dust collection box (50) until emptied, characterized in that a virtual center plane (20) can be laid through a main body (18) of the machine tool (10) and / or the dust collection box (50), wherein the virtual center plane (20) is designed toto divide the main body (18) in a sectional view looking from a front spatial direction into a first side (22) and a second side (24), wherein an inlet (56) of the dust collection box (50) for the dust-laden air (14) is arranged predominantly on one side (22, 24) of the virtual center plane (20), while the filter (52) of the dust collection box (50) is arranged predominantly on the other side (24, 22) of the virtual center plane (20).

2. Machine tool (10) according to claim 1, characterized in that the dust-laden air (14) can be guided from the working area (16) through a suction channel (26) to the inlet (56) of the dust collection box (50), wherein the virtual center plane (20) runs through the suction channel (26).

3. Machine tool (10) according to claim 2, characterized in that the suction channel (26) is designed telescopically.

4. Machine tool (10) according to one of the preceding claims, characterized in that the machine tool (10) has a first seal (30), wherein the first seal (30) is configured to guide the dust-laden air (14) into the dust collection box (50).

5. Machine tool (10) according to one of the preceding claims, characterized in that the dust collection box (50) has a second seal (32), wherein the second seal (32) is designed to guide the cleaned air from the filter (52) to a suction unit (58) of the dust collection box (50).

6. Machine tool (10) according to one of the preceding claims, characterized in that the machine tool (10) has a first seal (30) for conducting the dust-laden air (14) into the dust collection box (50) and a second seal (32) for conducting the cleaned air from the filter (52) to a suction unit (58) of the dust collection box (50), wherein the first seal (30) and the second seal (32) are oriented in a substantially same spatial direction.

7. Machine tool (10) according to one of the preceding claims, characterized in that the dust collection box (50) has an air guiding element (60), wherein the air guiding element (60) is formed in one piece.

8. Machine tool (10) according to one of the preceding claims, characterized in that the dust collection box (50) has a third seal (34), wherein the third seal (34) is designed to seal an upper region (66) of the dust collection box (50) from a lower region (68) of the dust collection box (50).

9. Machine tool (10) according to one of claims 4 to 8, characterized in that at least one of the seals (30, 32, 34) is integrated in a filter frame (62) of the dust collection box (50). Machine tool (10) according to one of the preceding claims, characterized in that the filter (52) is designed as a louvre filter, wherein the air flow through the dust collection box (50) strikes the louvres (64) of the louvre filter essentially perpendicularly. Dust collection box (50) for a machine tool (10) according to one of claims 1 to 10, wherein the dust collection box (50) is configured to extract dust-laden air (14) from a work area (16) of the machine tool (10) and to filter the dust from the dust-laden air (14) by means of a filter (52), so that the dust can be collected in an interior space (54) of the dust collection box (50) until emptied, characterized in that a virtual center plane (20) can be laid through the dust collection box (50), wherein the virtual center plane (20) is configured toto divide the dust collection box (50) into a first side (22) and a second side (24) in a sectional view viewed from a front spatial direction, wherein an inlet (56) of the dust collection box (50) for the dust-laden air (14) is arranged predominantly on one side (22, 24) of the dust collection box (50), while the filter (52) of the dust collection box (50) is arranged predominantly on the other side (24, 22) of the dust collection box (50). Dust collection box (50) according to claim 11, characterized in that at least one seal (30, 32, 34) of the dust collection box (50) is integrated into a filter frame (62) of the dust collection box (50). Dust collection box (50) according to claim 11 or 12, characterized in that the filter (52) is designed as a lamella filter, wherein the air flow through the dust collection box (50) strikes the lamellae (64) of the lamella filter substantially perpendicularly.

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