CN220575522U

CN220575522U - Electric hand tool with suction adapter

Info

Publication number: CN220575522U
Application number: CN202320166778.4U
Authority: CN
Inventors: R·萨格德
Original assignee: Anhai Co
Current assignee: Anhai Co
Priority date: 2022-02-10
Filing date: 2023-02-09
Publication date: 2024-03-12
Anticipated expiration: 2033-02-09
Also published as: DE202022100772U1; DE102023102651A1

Abstract

A powered hand tool (10) with a suction adapter having a housing (14) comprising at least: -a motor (20) with a drive shaft (22) arranged in the housing (14), wherein the drive shaft (22) drives a driven shaft (24) via a gear unit (26), -a vibrator (36) connected to the driven shaft (24), wherein abrasives (42) are interchangeably distributed, -a dust removal system for discharging processing residues, -a first channel (44) comprising at least approximately parallel to the driven shaft (24), and-a second channel (46) in flow connection with the first channel (44), which is arranged transversely to the first channel (44), the second channel (46) having openings on both sides, wherein optionally a suction adapter (48) is inserted into one of the two openings, and wherein the suction adapter can be inserted into one of the two openings depending on a first position or a second position.

Description

Electric hand tool with suction adapter

Technical Field

The present utility model relates to a power hand tool for material surfacing with the features of the independent claim.

Background

A well known power hand tool for the surface machining of materials is the so-called Delta mill. The power hand tool includes a housing in which a motor is disposed. The housing also functions as a handle. The hand tool includes a vibrator that is placed in oscillating motion by a motor. For surface treatment, a piece of sandpaper is mounted on the vibrator, and if necessary, sandpaper of a different grit or in case of wear can be replaced.

Since machining residues such as grinding dust are generated during the surface machining, in particular during grinding, it is known to provide suction holes in the vibrator and similarly in the sandpaper, which suction holes are part of the suction channel. The suction channel typically opens into the housing at the end of the handle. A suction adapter can be inserted into the suction channel, which adapter is necessary for sucking the processing residues as an intermediate piece or connector between the hand tool and the vacuum cleaner.

However, with such hand tools, the channel for sucking the processing residues extends all the way through the entire housing to the handle end, so that a suction adapter, to which a suction device can be coupled, for example in the form of a vacuum device or a vacuum cleaner, must additionally be mounted in the handle end region. However, the arrangement of the suction adapter limits the use of a manual bed by the operator, since he must always carry the suction device. Furthermore, if the suction device is built relatively large through the internal suction channel, it is disadvantageous that the operation of the hand tool is negatively affected.

Disclosure of Invention

It is therefore an object of the present utility model to provide a power hand tool in which the removal of process residues has been optimized.

This object is solved by a power hand tool having the features of the independent claims. Further advantageous embodiments and developments of the utility model are given in the respective dependent claims.

An electric hand tool for the surface machining of materials, in particular a grinding device, is disclosed. With power hand tools, surfaces of various materials, such as wood, can be processed, particularly abraded.

The power hand tool includes a housing with a handle. The housing of the hand tool may preferably be formed in an L-shape. Furthermore, the housing can be designed in multiple parts. In particular, the housing may be formed of at least two housing half-shells, which may be connected together by a suitable shape, material and/or force locking connection (preferably detachable). A motor having a drive shaft which is rotatably driven by the motor about a rotational axis is provided in the housing. The driving shaft drives the driven shaft through the gear unit.

The drive shaft and the drive spindle may be arranged at an angle to each other within the housing, preferably at an angle of about 90 °. The transmission of the rotational movement of the driving shaft to the driven shaft may be accomplished by a gear unit designed as a corner gear or the like. Furthermore, an eccentric element associated with the driven shaft may be provided such that the driven shaft rotates eccentrically and/or oscillatingly.

The hand tool also includes a vibrator coupled to the driven shaft, wherein the abrasive is interchangeably dispensed. The vibrator may be composed of an upper case and a lower case. In this case, the upper housing can be arranged on the driven shaft in a torque-proof manner, and the lower housing can be designed to be torque-proof or twistable relative to the upper housing. A cavity may be formed between the upper and lower shells. Further, the lower case may have a hole extending from the lower side of the lower case to the cavity or protruding to the cavity.

The abrasive may be formed of sandpaper having a certain grit size. The abrasive material may be removably attached to the vibrator body by a force, shape, and/or material locking connection. Preferably, the abrasive material is attached to the vibrator by velcro. However, any other connection method is conceivable. The sandpaper may also have holes corresponding to the holes in the lower shell.

In addition, the power hand tool includes a dust removal system for removing process residues. For example, the processing residue may be dust, material, and/or dirt particles from the abrasive surface. The dust removal system may be connected to a vacuum device, in particular a vacuum cleaner. By means of a dust removal system integrated in the hand tool, the processing residues can be sucked up by means of a connected or coupled vacuum device.

The dust removal system has a first channel at least approximately parallel to or at an angle to the driven shaft and a second channel connected to the first channel, the second channel being arranged transversely, in particular perpendicularly, to the first channel. Preferably, the first channel and the second channel may be T-shaped with respect to each other.

The second channel has openings on both sides, wherein the suction adapter is optionally inserted into one of the two openings, in particular is torsion-proof. In particular, the suction adapter may be inserted into one of the two openings depending on the first position or the second position.

Thus, depending on the opening chosen, starting from the longitudinal extension of the housing, in particular the handle, the suction adapter is optionally arranged on the left or right side of the housing.

Advantageously, the hose of the vacuum device can also be guided from the side of the hand tool by a transverse connection of the suction adapter. Furthermore, thanks to the lateral arrangement of such a dust removal system and the resulting suction adapter, the manual machine can be kept more lightweight, which also has a positive impact on the operator, since the weight of the manual machine is much lighter. Furthermore, the connection or hose of the vacuum device is transverse, so that it is also advantageous that the operator is not disturbed when operating the manual machine tool.

In the hand tool, it may be provided that the suction adapter is inserted into one of the two openings of the second channel according to the first insertion position, such that the processing residues are discharged laterally or obliquely forward from the housing, in particular from the handle. Thus, the suction adapter may extend laterally forward from either the left or right side of the handle, or may extend obliquely forward from the housing.

For the hand tool, it may be provided that the suction adapter is inserted into one of the two openings of the second channel according to the second insertion position, such that the processing residues are discharged laterally or obliquely backwards from the housing. Thus, the suction adapter may extend laterally rearward from the left or right side of the handle, or may extend obliquely rearward from the housing.

Furthermore, it may be provided that the opposite opening can be closed or automatically by a suction adapter inserted into one opening. Thus, the hand tool cannot draw in ambient air and/or foreign particles or the like through the opening. Another advantage is that no additional components are required to close the other or opposite opening.

The suction adapter can in particular be formed by a coupling element and a connecting element for the suction device, wherein the coupling element and the connecting element are arranged at an angle to one another. Thus, if the suction adapter is inserted into one of the two openings, the angular design of the suction adapter allows the suction system to deviate from the angular orientation of the housing.

Furthermore, a coupling element of the suction element can be provided having an end face and a side face, wherein the end face of the coupling element is formed closed and at least two side faces of the coupling element have a recess at least in regions. The grooves may have rectangular, circular, oval, etc. cross-sections.

For sucking the processing residues, a first channel may be provided in connection with or coupled to the oscillating body. In particular, the first passage may be coupled to the upper case of the vibrator such that the first passage is connected to a cavity formed between the upper case and the lower case.

According to a preferred embodiment, the first channel may be provided decoupled from the housing, which may particularly mean that the first channel is provided outside the housing.

Furthermore, the first channel may be formed by a resilient element. For example, the elastic element may be formed of a rubber element. By being formed elastically, the first passage can be buffered. Thus, for example, vibrations, irregularities, shocks and/or blows, vibrations of the vibrating body, etc. may be damped and buffered.

According to an alternative embodiment, a first channel may be provided integrated in the housing.

According to a preferred embodiment, the second channel may be integrated in the housing. By integrating the second channel into the housing, a stable connection possibility for the suction adapter can be provided.

In particular, the second channel may run under the drive shaft in the region of the underside of the tool. Since the second channel has openings on both sides, this can extend the entire width of the handle.

According to an alternative embodiment, the second channel may also be decoupled from the housing, such that the second channel runs along or transversely to the housing underside of the hand tool, respectively. The advantage here is that the suction system is decoupled from the internal design of the manual machine, and can therefore be replaced when required, without great effort.

Furthermore, it may be provided that the second channel is optionally closable by a closing element. This is especially desirable if it is desired and/or required to operate the hand tool without a vacuum device. By inserting the closing element of the second channel, the hand tool cannot suck ambient air through the channel.

Furthermore, the second channel may be provided with a rectangular cross section. The suction adapter, in particular the coupling element thereof, may be held and/or fixed in the second channel. In particular, the coupling element may have a cross section formed corresponding to the cross section of the second channel.

The power hand tool may be a wired hand tool or a battery powered hand tool.

Drawings

Hereinafter, the present utility model and its advantages are intended to be described in more detail using the accompanying drawings. The proportions of the various elements in the drawings do not always correspond to actual proportions, since some shapes are simplified, and others are exaggerated to better illustrate other elements.

Fig. 1 shows a hand tool according to the utility model in a schematic cross-sectional view.

Fig. 2 shows a suction adapter in a schematic view from above.

Fig. 3A and 3B show the hand tool of fig. 1 with the suction adapter of fig. 2 in different insertion positions on the right side of the hand tool, respectively.

Fig. 4A and 4B show the hand tool of fig. 1 with the suction adapter of fig. 2 in different insertion positions on the left side of the hand tool, respectively.

For elements of the utility model that are the same or function the same reference numerals are used. Furthermore, for purposes of overview, only the reference numerals necessary to describe the respective figures are shown in the respective figures. The embodiments shown only show examples of how the device according to the utility model can be designed and do not constitute a final limitation.

Detailed Description

Fig. 1 illustrates a power hand tool 10, and in particular an abrasive tool 12 for surfacing various materials such as wood. The abrasive tool 12 is a wired power hand tool 10. Alternatively, the milling device 12 may be designed as a battery-powered hand tool, which may be powered by a replaceable battery pack.

The hand tool 10 has a housing 14 that forms an L-shape. Wherein the long leg of the hand tool 10 forms the handle 16 and the machining means is arranged on the short leg.

The housing 14 is formed from at least two housing half-shells 18, 18' (see fig. 3a,3 b). Within the housing 14, and in particular within the handle 16, a motor is provided. The motor 20 may be formed by an electric motor, in particular by a brush motor or by a brushless motor.

The motor 20 includes a drive shaft 22, and the drive shaft 22 is rotationally driven by the motor 20 about a rotational axis not shown here. Disposed within the housing 12 is a driven shaft 24 that is at least approximately perpendicular or orthogonal to the drive shaft 22. The driven shaft 24 is coupled to the driving shaft 22 through a gear unit 26 so that the torque of the driving shaft 22 can be transmitted to the driven shaft 24. The gear unit 26 is formed by a corner gear 28, in particular by a bevel gear.

The gear unit 26 includes a gear cover 30 on the free end of the drive shaft 22. Furthermore, the gear unit 26 comprises a bevel gear 32 arranged at an angle to the drive shaft 22, on which a gear cover 30 is provided and which is associated with the driven shaft 24. Thus, by rotation of the drive shaft 22, the gear cover 30 also rotates and/or rolls along the bevel gear 32, thereby ultimately driving rotation of the driven shaft 24. An eccentric element 34 is provided at the end of the driven shaft 24 opposite the bevel gear 32, so that the driven shaft 24 rotates eccentrically and/or oscillatingly.

A vibrator 36 is arranged at the free end of the driven shaft 24 in the region of the eccentric element 34, which vibrator 36 can also be moved eccentrically and/or oscillatably by an eccentric and/or oscillating movement of the driven shaft 24. The vibrator 36 is formed of an upper case 38 and a lower case 40, with a cavity formed between the upper case 38 and the lower case 40.

The lower shell 40 is permanently or interchangeably secured to the upper shell 38 by a securing means. The fastening of the lower shell 40 to the upper shell 38 may be formed such that the lower shell 40 is torsionable relative to the upper shell 38. The lower shell 40 has a continuous bore extending from the underside of the lower shell 40 to the cavity, which is not described in detail herein.

Further, an abrasive (not shown) is interchangeably assigned to the lower shell 40. The abrasive may be sandpaper having a certain grit size. The abrasive material may be secured to the lower shell 40 by a removable force and/or material locking connection. Preferably, the abrasive is secured to the lower shell 40 by Velcro. The coated abrasive may also have holes formed corresponding to the holes of the lower housing 40.

The hand tool 10 further includes a dust removal system for removing and/or sucking processing residues. For example, the processing residue may be dust, material, and/or dirt particles from the abrasive surface. The dust removal system may be connected to a vacuum device, in particular a vacuum cleaner, so that the processing residues may be sucked.

The dust removal system has a first passage 44 at least approximately parallel to the driven shaft 24. Specifically, the first channel 44 is decoupled from the housing 14; this means that the first channel 44 is located or runs outside the housing 14.

In order to enable the machining residues generated during the use of the manual machine 10 to be sucked, the first channel 44 is associated with the vibrator 36 and in particular coupled with the upper shell 38. The coupling between the upper shell 38 and the first channel 44 is formed such that the first channel 44 is connected to the cavity formed between the upper shell 38 and the lower shell 40.

In order to be able to balance and compensate for vibrations caused by the vibrator 36, the first channel 44 is formed by an elastic element, in particular a rubber element.

The second channel 46, which is connected to the first channel in a flow manner, is arranged transversely, in particular perpendicularly, to the first channel 44, which means that the first channel 44 and the second channel 46 are T-shaped with respect to each other. Unlike the first channel 44, the second channel 46 is integrated in the housing 14. In particular, the second channel 46 extends below the drive shaft 24 and transversely to the longitudinal direction of the handle 16.

The second channel 46 has openings on both sides, i.e. the channel is formed open or accessible on both sides of the handle 16. The second channel 46 has a rectangular cross-section.

In fig. 2, the suction adapter 48 is shown in a schematic view from above. The suction adapter 48 is formed by a coupling element 50 and a connecting element 52 for a vacuum device not shown here. Coupling member 50 and connecting member 52 are angled with respect to one another. Further, the coupling member 50 and the connection member 52 are formed in a hollow shape.

The coupling element 52 has a shape formed corresponding to the cross-section of the second channel 46, i.e. the cross-section of the coupling element 52 has a rectangular shape.

The coupling element 52 of the suction adapter 48 has one end face 54 and four side faces 56, wherein the end face 54 of the coupling element 50 is formed as a closed-off and at least two side faces 56 of the coupling element 50 have a recess 58 at least in regions.

As shown in fig. 3A,3B, 4A and 4B, the suction adapter 48 is inserted into one of the two openings of the second channel 46 according to the first position and according to the second position, wherein, according to fig. 3A and 3B, the suction adapter 48 is arranged on the right side of the hand tool 10 and on the right side of the handle 16, respectively, and, according to fig. 4A and 4B, on the left side of the hand tool 10 and on the left side of the handle 16, respectively.

Due to the geometry of the coupling element 50, the suction adapter is held and/or fixed in the second channel 46. Due to this form-locking, the suction adapter 48 is secured in the corresponding opening of the second channel 46 against torsion.

Because the second channel 46 is open continuously or on both sides, the suction adapter 48 is optionally disposed on either the left or right side of the handle 16.

According to the first position shown in fig. 3A, the suction adapter 48 is inserted into one of the two openings (into the right opening as viewed from above) of the second passage 46 in such a manner that dust suction is discharged laterally forward or obliquely forward from the housing 14 (refer to fig. 3A); this means that the suction adapter 48 is thus located on the right side of the hand tool 10 or on the right side of the handle 16, seen from above.

According to the first position shown in fig. 4A, the suction adapter 48 is inserted into one of the two openings (into the left opening as viewed from above) of the second passage 46 in such a manner that dust suction is discharged laterally forward or obliquely forward from the housing 14 (refer to fig. 4A); this means that the suction adapter 48 is thus located on the left side of the hand tool 10 or on the left side of the handle 16, seen from above.

According to the second position shown in fig. 3B, the suction adapter 48 is inserted into one of the two openings (into the right opening as viewed from above) of the second passage 46 in such a manner that dust suction is discharged laterally rearward or obliquely rearward from the housing 14 (refer to fig. 3B); this means that the suction adapter 48 is thus located on the right side of the hand tool 10 or on the right side of the handle 16, seen from above.

According to the second position shown in fig. 4B, the suction adapter 48 is inserted into one of the two openings (into the left opening as viewed from above) of the second passage 46 in such a manner that dust suction is discharged laterally rearward or obliquely rearward from the housing 14 (refer to fig. 4B); this means that the suction adapter 48 is thus located on the left side of the hand tool 10 or on the left side of the handle 16, seen from above.

By two alternative positions of the suction adapter 48 within the opening of the second channel 46, the coupling hose (not shown) of the vacuum device can be selectively moved laterally away from the hand tool 10, either forward or rearward, so that the hose does not interfere with the operator and interfere with the surface treatment of the material.

Due to the design of the suction adapter 48, in particular its connecting element 52, the opposite opening of the second channel 46 is automatically closed by the connecting element 52 being inserted into one opening. Thus, the hand tool 10 cannot draw in ambient air and/or foreign particulate matter or the like through the opening.

The utility model has been described with reference to the preferred embodiments. However, it is envisioned that those skilled in the art may devise modifications or variations of the present utility model without departing from the scope of the following claims.

List of reference numerals

10. Hand-held tool

12. Grinding device

14. Shell body

16. Handle

18. Shell half-shell

18' housing half-shell

20. Motor with a motor housing

22. Driving shaft

24. Driven shaft

26. Gear unit

28. Angle gear

30. Gear cover

32. Bevel gear

34. Eccentric element

36. Vibrator body

38. Upper shell

40. Lower shell

42. Abrasive material

44. A first channel

46. Second channel

48. Suction adapter

50. Coupling element

52. Connecting element

54. End face

56. Side surface

58. Groove

Claims

1. A powered hand tool with a suction adapter having a housing (14) comprising at least:

a motor (20) provided in the housing (14) having a drive shaft (22), wherein the drive shaft (22) drives a driven shaft (24) via a gear unit (26),

a vibrator (36) connected to the driven shaft (24), in which an abrasive (42) is interchangeably distributed,

a dust removal system for removing processing residues,

-comprising a first channel (44) at least approximately parallel to said driven shaft (24), and

a second channel (46) in flow connection with the first channel (44), which is arranged transversely to the first channel (44),

characterized in that the second channel (46) has openings on both sides, wherein a suction adapter (48) is optionally inserted into one of the two openings, and wherein the suction adapter can be inserted into one of the two openings depending on the first position or the second position.

2. The powered hand tool with suction adapter according to claim 1, wherein the suction adapter (48) is insertable into the second channel (46) according to a first position such that machining residues are discharged obliquely forward from the housing.

3. The powered hand tool with suction adapter according to claim 1 or 2, wherein the suction adapter (48) is insertable into the second channel (46) according to a second position such that machining residues are discharged obliquely backwards from the housing.

4. A powered hand tool with a suction adapter according to claim 1, wherein the suction adapter (48) used closes the opposite opening.

5. The powered hand tool with suction adapter according to claim 1, wherein the first channel (44) and the second channel (46) are arranged in a T-shape to each other.

6. The powered hand tool with suction adapter according to claim 1, wherein the first channel (44) is integrated in the housing (14).

7. The powered hand tool with suction adapter according to claim 1, wherein the first channel (44) is formed by a resilient element.

8. The powered hand tool with suction adapter according to claim 1, wherein the second channel (46) is integrated in the housing (14).

9. The powered hand tool with suction adapter according to claim 1, wherein the second channel (46) is closable by a closing element.

10. The powered hand tool with suction adapter according to claim 1, wherein the suction adapter (48) remains form-locked within the second channel (46).