CN1978151A - Hand-held machine tool - Google Patents

Abstract

The invention relates to a handheld power tool comprising at least one housing (10) with at least one housing part (16), a A guide channel (14) for particles, wherein the guide channel (14) is at least partially formed by the housing part (16). The handheld power tool is characterized in that the housing part ( 16 ) is designed as a viewing window.

Description

hand tool machine

technical field

The invention relates to a hand-held power tool, in particular a hand-held planer.

Background technique

Hand-held power tools, in particular hand-held planers, are known which are provided with a guide channel for ejecting chips and/or abrasive particles. In this case, the guide channel is integrated in the housing of the hand-held power tool and opens out, for example, in the rear region of the housing. A collection container for swarf and/or abrasive particles can be connected to the guide channel. The hand power tool can include a blower unit or a suction unit, which generates an air flow in the guide channel in order to guide the swarf and/or abrasive particles out of the working area of the hand power tool and transport them into the collection container.

Contents of the invention

According to the invention, a hand-held power tool is proposed which comprises at least one housing with at least one housing part, a guide channel for conducting chips and/or abrasive particles from a working area of the hand-held power tool, wherein The guide channel is at least partially formed by the housing part, wherein the housing part is formed as a viewing window.

The invention proposes that a housing part, which at least partially forms the guide channel of the hand-held power tool, is designed as a viewing window. This enables the user of the handheld power tool to see through the viewing window into the guide channel. The user can thus check in a simple manner whether the chips and/or abrasive particles are correctly guided out of the working area of the hand-held power tool via the guide channel and are conveyed, in particular, into the collection container. Without such a viewing window, the operator would have to open the housing in order to view the guide channel. If a collecting container is installed on the hand-held power tool, this viewing window also enables the user to check the filling state of the collecting container, since when the collecting container is full, the guide channel starts to be filled. By means of viewing through the window, the user can easily recognize whether the collection container has to be emptied.

In the following, instead of "chips and/or abrasive particles", only the word "chips" is simply used, wherein the concept of "chips" should include abrasive particles, dust particles, etc.

The hand-held power tool according to the invention comprises a housing which is formed from at least one housing part, but can also be formed from a plurality of housing parts. A guide channel is provided in the housing for conducting chips and/or abrasive particles out of the working area of the hand-held power tool. Arranged in the working area is an eg roller-shaped cutter shaft for cutting off chips, in particular made of woody material. The knife shaft can be driven by the electric motor of the hand-held power tool, for example, via a drive belt. In order to guide the chips out of the working area via the guide channel, an air flow is generated in the hand-held power tool by means of a blower or suction device. Suitable blowing or suction devices are known from the prior art.

Preferably, a collection container for swarf and/or abrasive particles is connected to the guide channel, in which collection container the swarf and/or abrasive particles can be collected. The collection container can be detachably connected to the guide channel, for example by means of a connecting piece, so that the collection container can be easily removed for emptying and reconnected after emptying. The connecting piece secures the collecting container to the housing, for example by means of snap-in projections which are arranged on the collecting container and engage in corresponding recesses on the housing. The collection container can be a collection bag or a box-shaped collection container. It is preferably a box-shaped collection container made of plastic, for example.

Chip ejection takes place at the side or at the rear. In a preferred embodiment, the chips are ejected from the rear in that the guide channel extends longitudinally through the hand-held power tool from a working area arranged in the front part of the hand-held power tool and is open to the rear, Chips and/or abrasive particles can thus be thrown backwards. In this embodiment, the guide channel has an opening at the rear end of the housing, which is located at the end of the guide channel facing away from the working area. Correspondingly, the collecting container is also preferably arranged at the rear end of the housing. Within the scope of the present invention, "front" and "rear" refer to the working direction of the hand-held power tool.

In particular, the guide channel is surrounded by four walls, namely a lower wall and an upper wall as well as two side walls. In this case, the guide channel can have, for example, a rectangular cross section or any other desired cross section. The guide channel can be curved or curved, for example. The walls of the guide channel can be flat, curved or curved. Each wall may also consist of a plurality of wall sections which together form one wall. Thus, for example, a side wall can consist of two wall parts, namely an upper wall part and a lower wall part, which contact each other and thus form a closed side wall.

The guide channel of the hand-held power tool according to the invention is at least partially formed by the at least one housing part, which forms the housing. The housing can also be formed from a plurality of housing parts, one of which at least partially forms the guide channel. The housing part forms at least one wall part of the guide channel. According to the invention, the housing part, which at the same time forms a wall part of the guide channel, is designed as a viewing window in order to ensure a view into the guide channel. For this purpose, the housing part serving as the viewing window is made, for example, of transparent plastic or a mixture of transparent plastics.

In an advantageous embodiment, the housing part configured as the viewing window is designed to be removable. In this case, the viewing window is detachably fastened to the other housing or other housing parts, for example by means of a screw connection or a snap-in connection. The window can thus be removed for cleaning purposes and then reinstalled.

In a further preferred embodiment, the housing part which at least partially forms the guide channel and serves as a viewing window is arranged in the upper region of the housing. In particular, the housing part at least partially forms an upper wall of the guide channel, for example a wall part of the upper wall. In this embodiment, therefore, at least a part of the upper wall of the guide channel is made transparent in order to serve as a viewing window. In this case, the guide channel extends longitudinally through the hand-held power tool from the working region in the front of the housing to the rear end of the housing. Between the front working area and the opening at the rear end of the guide channel, the guide channel is curved such that the upper wall of the guide channel is at least partially formed by an upper housing part designed as a viewing window. The upper housing part forming the viewing window can be arranged, for example, in the region of the handle of the hand-held power tool. The viewing window can be located, for example, below the handle.

The hand-held power tool according to the invention relates in particular to a hand-held planer, for example for woodworking.

Description of drawings

The invention is described in detail below with reference to the drawings. The accompanying drawings indicate:

Figure 1: A top view of one side of a preferred embodiment of a handheld planer,

FIG. 2 : Schematic longitudinal section of the hand planer according to FIG. 1 .

Detailed ways

FIG. 1 shows an embodiment of a hand planer 100 in a side view. The hand planer comprises a housing 10 with a handle 20 , a power cable 22 , a switch 21 for switching the hand planer 100 on and off and a rotary switch 23 for adjusting the cutting depth. A collection container 30 is connected to the housing 10 of the hand planer 100 . Below the handle 20 , a housing part 16 in the upper region 10 b of the housing 10 is formed as a viewing window made of transparent plastic. As can be seen in FIG. 2 , the housing part 16 configured as a viewing window at least partially forms the upper wall 14 b of the guide channel 14 .

FIG. 2 schematically shows the hand planer 100 according to FIG. 1 in longitudinal section. A guide channel 14 is provided in the housing 10 , in which swarf and/or abrasive particles are guided out of the working area of the hand planer 100 . The guide channel 14 extends longitudinally from the working area 11 through the hand planer 100 and is open to the rear, whereby an open end 14 a of the guide channel for ejecting chips is arranged in the rear region of the housing 10 10a. The guide channel 14 is arched across an electric motor (not shown) arranged transversely to the guide channel 14 .

Arranged in the working area 11 is a roller-shaped knife shaft 12 for cutting chips, in particular of woody material, which is driven via a drive belt by the electric motor of the hand-held planer (not shown). An air flow is generated by means of a blower unit 13 , which guides chips and/or abrasive particles away from the working section 11 through the guide channel 14 . The blower unit 13 can be designed, for example, as a cross-flow fan, wherein the rotational movement of the knife shaft 12 is transmitted to the blower unit 13 (not shown) by means of a transmission element. The blower unit 13 is driven to move about a rotation axis extending parallel to the rotation axis of the knife shaft 12 via a transmission element. The axis of rotation of the blowing unit extends perpendicularly to the air flow 15 guided in the guide channel 14 . In the rear region 10 a of the housing 10 , a collection container 30 for swarf and/or abrasive particles adjoins the guide channel 14 . The collecting container 30 receives the shavings carried away from the working area 11 via the guide channel 14 .

Claims (8)

1. hand held power machine, at least comprise that a housing (10) with at least one housing parts (16), a working region (11) that is used for from hand held power machine derive the guiding channel (14) of smear metal and/or abrasive grain, wherein, this guiding channel (14) is made of described housing parts (16) at least in part, and it is characterized in that: this housing parts (16) constitutes form.

2. according to the hand held power machine of claim 1, it is characterized in that: this housing parts (16) is arranged in the upper area (10b) of housing (10).

3. according to the hand held power machine of claim 1 or 2, it is characterized in that: this housing parts (16) constitutes the upper wall (14b) of guiding channel (14) at least in part.

4. according to the hand held power machine of one of claim 1 to 3, it is characterized in that: this housing parts (16) is made by the mixture of transparent plastic or transparent plastic.

5. according to the hand held power machine of one of claim 1 to 4, it is characterized in that: this housing parts (16) is constructed to such an extent that can take off.

6. according to the hand held power machine of one of claim 1 to 5, it is characterized in that: guiding channel (14) has an aperture (14a) in the Background Region (10a) of housing (10).

7. according to the hand held power machine of one of claim 1 to 6, it is characterized in that: on guiding channel (14), connecting a collection container (30) that is used for smear metal and/or abrasive grain.

8. according to the hand held power machine of claim 7, it is characterized in that: collection container (30) is arranged on the rearward end (10a) of housing (10).

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