阅读说明：本技术 动力工具附接部件 (Power tool attachment member ) 是由 P·I·福斯贝里 W·马利诺夫斯基 于 2019-06-20 设计创作，主要内容包括：本发明涉及用于拧紧接头的动力工具附接部件。动力工具附接部件包括伸长壳体,该伸长壳体包括上部壳体部件和与上部壳体部件相互连接的下部壳体部件。用于连接至动力工具的输出轴的输入齿轮布置在壳体的第一端部处。动力工具附接部件进一步包括具有输出连接件的输出齿轮,该输出齿轮布置在壳体的第二端部处。至少一个中间齿轮布置在壳体内部,以将输入齿轮的旋转传递至输出齿轮。动力工具附接部件的特征在于,磁体布置在伸长壳体中,其中磁体布置为收集铁磁颗粒。(The invention relates to a power tool attachment component for tightening a joint. The power tool attachment member includes an elongate housing including an upper housing member and a lower housing member interconnected with the upper housing member. An input gear for connection to an output shaft of the power tool is disposed at the first end of the housing. The power tool attachment member further includes an output gear having an output connection, the output gear being disposed at the second end of the housing. At least one intermediate gear is disposed inside the housing to transmit rotation of the input gear to the output gear. The power tool attachment component is characterized in that a magnet is arranged in the elongated housing, wherein the magnet is arranged to collect ferromagnetic particles.)

1. A power tool attachment component (10) for a power tool, comprising:

-an elongated housing (11, 12) comprising an upper housing part (11) and a lower housing part (12) interconnected with the upper housing part (11),

an input gear (22) for connection to an output shaft of a power wrench, the input gear being arranged at a first end of the housing,

-an output gear (23) having an output connection (23a), the output gear being arranged at the second end of the housing, and

-at least one intermediate gear (24, 25, 26) arranged inside the housing (11, 12) to transfer the rotation of the input gear (22) to the output gear (23), characterized in that a magnet (13) is arranged in the elongated housing (11, 12), wherein the magnet is arranged to collect ferromagnetic particles.

2. The power tool attachment member (10) according to claim 1, wherein the magnet (13) is disposed in the lower housing member (12).

3. The power tool attachment member (10) according to claim 1, wherein the magnet (13) is disposed in the upper housing member (11).

4. The power tool attachment member (10) according to claim 1, wherein the magnet (13) is arranged in the lower housing member (12) under the thrust action between the two gears (22-26).

5. The power tool attachment component (10) of claim 1, wherein the elongate housing (11, 12) further comprises a detachable cover (14), and the magnet (13) is disposed in the detachable cover (14).

6. The power tool attachment component (10) of claim 5, wherein the detachable cover (14) is disposed below the input gear (22).

7. The power tool attachment component (10) of claim 5 or 6, wherein the detachable cover portion (14) is part of an arrangement that holds together the upper housing component (11) and the lower housing component (12).

8. The power tool attachment component (10) of claim 7, comprising an interface head (17) and a sleeve (16), the interface head (17) configured to attach to an adapter; the sleeve (16) is configured to receive the input gear (22) and is provided with at least one radially outwardly extending clamping flange (18), the clamping flange (18) being configured to engage with the interface head (17), wherein the upper housing part (11) and the lower housing part (12) each have a through opening configured to receive the sleeve (16), the detachable cover part (14) being configured to engage with the sleeve (16) to attach the interface head (17) and the detachable cover part (14) to the elongated housing (11, 12).

9. The power tool attachment component of claim 7, comprising an interface head (17), the interface head (17) configured to attach to an adapter, wherein the interface head has a sleeve (16), the sleeve (16) configured to receive an input gear (22), the upper and lower housing components (11, 12) each having a through opening configured to receive a sleeve, the detachable cover portion (14) configured to engage with a sleeve.

10. The power tool attachment component (10) of claim 8 or 9, wherein the sleeve (16) and the detachable cover (14) form a cavity for receiving an input gear (22).

11. The power tool attachment component of claim 10, wherein the chamber opens into an elongate housing formed by an upper housing member (11) and a lower housing member (12).

12. The power tool attachment component (10) of any of claims 8-11, wherein the detachable cover portion (14) has an inner cover portion surface (14a), the inner cover portion surface (14a) being configured to receive a magnet (13).

13. The power tool attachment member (10) according to claim 12, wherein the inner cover surface (14a) is disposed adjacent to an input gear (22).

14. The power tool attachment component (10) according to any one of the preceding claims, wherein the power tool attachment component (10) comprises a number of magnets (13).

15. The power tool attachment member (10) according to claim 14, wherein the plurality of magnets (13) are placed at different positions in the elongated housing (11, 12).

Technical Field

The present invention relates to a power tool attachment member for transmitting torque from a power tool to a joint.

Background

Power tool attachment components are often used in confined spaces where ordinary power tools are not available because of the difficulty in accessing the bolts or nuts of the joints to be tightened. The power tool attachment component is also known as a claw attachment (crowfoot), a frontal attachment, or a biased attachment. Which will be referred to as power tool attachment member in the following.

The power tool attachment member includes a plurality of gears that transmit rotational motion from the input gear to the output gear. The gears are typically generally aligned tooth to tooth within the elongate housing. The length of the attachment part corresponds to the sum of the widths of the gears in addition to the thickness of the housing wall. Power tool attachment components are typically used in confined spaces. Therefore, the size of the power tool attachment component is an important feature. Thus, the use of a pinion is desirable. The pinion gear is more susceptible to wear than the bull gear. Accordingly, a disadvantage of conventional power tool accessories is that the power tool accessories are susceptible to wear, which can lead to failure of the power tool accessories.

Accordingly, there is a need for an improved power tool attachment component that can address or at least mitigate the above-mentioned problems.

Disclosure of Invention

It is an object of the present invention to provide an attachment part having increased durability compared to conventional attachment parts.

This object is achieved by the invention according to claim 1, which relates to a power tool attachment part for tightening a joint. The power tool attachment member includes an elongate housing including an upper housing member and a lower housing member interconnected with the upper housing member. An input gear for connection to an output shaft of the power tool is disposed at the first end of the housing. The power tool attachment member further includes an output gear having an output connection, wherein the output gear is disposed at the second end of the housing. At least one intermediate gear is disposed inside the housing to transmit rotation of the input gear to the output gear. The power tool attachment component is characterized in that a magnet is arranged in the elongated housing, wherein the magnet is arranged to collect ferromagnetic particles.

In a particular embodiment of the invention, the magnet is arranged in the lower housing part.

In another embodiment of the invention, the magnet is arranged in the upper housing part.

In a further embodiment of the invention, the magnet is arranged in the lower housing part under the effect of the thrust between the two gears.

Thus, the magnet may be arranged below the region of the lower housing part that engages the gear. Alternatively or additionally, the magnet may be arranged above the region of the upper housing part that engages the gear.

In a particular embodiment of the invention, the elongate housing comprises a detachable cover portion, wherein the magnet is arranged in the detachable cover portion.

In another embodiment of the invention, a removable cover is disposed below the input gear, wherein the magnet is disposed in the removable cover.

In yet another embodiment of the invention, the detachable cover part is part of an arrangement holding the upper housing part and the lower housing part together, wherein the magnet is arranged in the detachable cover part.

According to one embodiment, a power tool attachment component comprises: an interface head and a sleeve, the interface head configured to attach to an adapter; the sleeve is configured to receive the input gear and is provided with at least one radially outwardly extending clamping flange configured to engage with the interface head, wherein the upper and lower housing components each have a through opening configured to receive the sleeve, wherein the detachable cover portion is configured to engage with the sleeve to attach the interface head and the detachable cover portion to the elongate housing.

Optionally, the power tool attachment component may comprise an interface head configured to attach to the adapter, wherein the interface head has a sleeve configured to receive the input gear, wherein the upper housing component and the lower housing component each have a through opening configured to receive the sleeve, wherein the detachable cover portion is configured to engage with the sleeve.

According to one embodiment, the sleeve and the detachable cover form a cavity for receiving the input gear.

According to one embodiment, the chamber opens into an elongate housing formed by an upper housing part and a lower housing part.

According to one embodiment, the removable cover portion has an inner cover portion surface configured to receive a magnet.

According to one embodiment, the inner cover portion surface is disposed adjacent to the input gear.

Other features and advantages of the present invention will be apparent from the accompanying drawings and from the detailed description of the illustrated embodiments.

Drawings

In the following detailed description, reference is made to the accompanying drawings in which:

FIG. 1 illustrates a power tool attachment component according to an exemplary embodiment of the present invention;

FIG. 2 illustrates the power tool attachment member in a substantially installed state;

FIG. 3 shows a top view of the power tool attachment component of FIG. 2;

fig. 4a shows a cross section taken along the line J-J in fig. 3 with the detachable cover part removed.

Fig. 4b shows a corresponding section of the detachable cover part.

Detailed Description

An example of a power tool attachment component 10 is shown in fig. 1. The power tool attachment member 10 comprises elongate housings 11, 12, the elongate housings 11, 12 comprising an upper housing member 11 and a lower housing member 12. The upper housing part 11 and the lower housing part 12 are connected to each other.

Due to the difficulty or inability to access the bolt or nut to be tightened, attachment components such as power tools (such as power wrenches) are used in confined spaces where it is not possible to use ordinary power tools. Therefore, the size of the attachment member is an important feature. The pinion gear is more susceptible to wear than the bull gear.

The configuration of the exemplary power tool attachment component 10 will reduce wear and increase durability compared to conventional attachment components with the same accuracy and torque capacity. This will be apparent from the following description.

In fig. 1, the power tool attachment component 10 is shown in an exploded view. The power tool attachment member 10 includes an input gear 22 and an output gear 23 disposed in the elongate housings 11, 12. An input gear 22 is arranged at a first end of the elongated housing 11, 12. An output gear 23 is arranged at the second end of the housing 11, 12.

The input gear 22 is drivingly connected to the output gear 23 via one or more intermediate gears. In this example, there are three intermediate gears 24, 25, 26, the three intermediate gears 24, 25, 26 being arranged to transmit the rotation of the input gear 22 to the output gear 23.

The output gear 23 includes an output connection 23 a. The output connector 23a may be configured to receive a wrench head, a screw bit, a nut, or a screw head.

The power tool attachment member 10 includes a magnet 13. Magnets 13 are arranged in the elongated housings 11, 12. The magnet 13 is arranged to collect ferromagnetic particles inside the housing 11, 12. Since the magnets 13 are arranged to collect ferromagnetic particles, these particles are prevented from moving back and forth inside the elongated housings 11, 12 and causing wear on the gears 22, 23, 24, 25, 26. This will reduce wear of the gears 22-26 and thereby increase the durability of the attachment part 10.

According to an exemplary embodiment, a magnet 13 is arranged in the lower housing part 12. An advantage of this embodiment is that it may be easier to collect ferromagnetic particles by the magnet when the power tool attachment part 10 is in the upright position.

In yet another exemplary embodiment of the power tool attachment part 10, the magnet 13 is arranged in the lower housing part 12 under the influence between the two gear wheels 22-26, i.e. in the interface between the two engaging gear wheels 22-26.

In another exemplary embodiment of the power tool attachment member 10, the magnet 13 is disposed in the upper housing member 11. The power tool attachment member 10 is often moved around when in use. In this exemplary embodiment, when the power tool attachment 10 is in the inverted position, the ferromagnetic particles will be collected by the magnet.

According to one embodiment, the power tool attachment component 10 may include a magnet 13 disposed in the upper housing component 11 and a magnet 13 disposed in the lower housing component 12.

In a further exemplary embodiment, the magnets are arranged in a detachable cover (not shown in fig. 1) of the elongated housing 11, 12. An advantage of this exemplary embodiment is that the magnet 13 can be cleaned when the detachable cover part is removed. In another exemplary embodiment, a removable cover is disposed below the input gear 22. In a further exemplary embodiment of the power tool attachment part 10, the detachable cover part is part of an arrangement that holds the upper housing part 11 and the lower housing part 12 together. An advantage of this exemplary embodiment is that the magnet 13 can be cleaned without the need to disassemble the upper housing part 11 from the interconnected lower housing part 12.

According to an exemplary embodiment, the power tool attachment component 10 includes several magnets placed at different locations in the elongated housing 11, 12.

A power tool attachment component 10 according to a particular embodiment is shown in fig. 2. In this exemplary embodiment, the power tool attachment component 10 includes a detachable cover 14. In fig. 2, the power tool attachment member 10 is shown with the upper housing member 11 disposed on the lower housing member 12 such that the interior of the attachment member 10 is not visible. However, the detachable cover 14 is shown detached from the power tool attachment part 10.

Fig. 3 shows a top view of the power tool attachment component 10 of fig. 2. Fig. 4a shows a cross section taken along the line J-J in fig. 3 without the detachable cover part 14, and fig. 4b shows a corresponding cross section of the detachable cover part 14.

The upper housing part 11 and the lower housing part 12 may each have through openings which are aligned when the upper housing part 11 and the lower housing part 12 are assembled to each other. The through opening is arranged in a first end of the elongated housing 11, 12. The through opening is configured to receive the input gear 22.

The exemplary power tool attachment component 10 includes a sleeve 16, the sleeve 16 configured to be received by the through opening. The example power tool attachment component 10 also includes an interface head 17, the interface head 17 configured to engage an adapter, such as an indexing adapter (indexing adapter). The sleeve 16 has one or more radially outwardly extending gripping flanges 18, the gripping flanges 18 being configured to engage the interface head 17. The detachable cover 14 includes attachment means for attaching the detachable cover 14 to the sleeve 16. For example, the detachable cover 14 may be attached to the sleeve 16 by a threaded connection. Thus, the interface head 17, the upper housing part 11, the lower housing part 12 and the detachable cover part 14 can be fastened to each other by this configuration.

According to a variant, the interface head and the sleeve can be integral. In this example, the detachable cover 14 is also configured to attach to a sleeve.

The sleeve 16 may have a circumferential opening configured to open towards the interior space of the interconnected upper and lower housing components 11, 12. In this way, the input gear 22 can interact with intermediate gears 24-26 arranged in an elongated housing formed by the upper housing part 11 and the lower housing part 12.

The sleeve 16 and the removable cover 14 may form a cavity in which the input gear 22 is disposed. When the power tool attachment member 10 is in the installed state, the detachable cover portion 14 may have an inner cover portion surface 14a, the inner cover portion surface 14a being disposed adjacent to the input gear 22.

The inner cap portion surface 14 may be provided with one or more magnet openings 19. The one or more magnet openings 19 may extend parallel to a central axis of the removable cover 14. One or more magnet openings 19 may be provided with respective magnets 13. The one or more magnets 13 may be configured to be press fit into the one or more magnet openings 19. Ferromagnetic particles in the chamber, e.g. from the output gear 22, can thus be collected by the magnet(s) 13.

In the example shown in fig. 2-4 b, two magnets 13 are arranged in the detachable cover part 14. However, in other exemplary embodiments, the removable cover 14 may be configured to accommodate more than two magnets 13 or fewer than two magnets 13. The power tool attachment member 10 includes the same number of magnets 13 as the magnet openings 19.

In the above, the invention has been described with reference to two specific embodiments. However, the present invention is not limited to either of these two embodiments. It will be obvious to a person skilled in the art that the invention can be modified within the scope defined by the appended claims.