CN1911604A

CN1911604A - Electric hand tool

Info

Publication number: CN1911604A
Application number: CNA200610110704XA
Authority: CN
Inventors: 罗伯特·西姆; 科内利斯·范德尚斯; 马库斯·韦伯
Original assignee: Robert Bosch GmbH
Current assignee: Robert Bosch GmbH
Priority date: 2005-08-08
Filing date: 2006-08-08
Publication date: 2007-02-14
Anticipated expiration: 2026-08-08
Also published as: GB2428992B; GB2428992A; US20070193760A1; CN1911604B; DE102005037255A1; GB0615637D0

Abstract

The invention relates to an electric hand tool which comprises a plurality of separable housing parts, with at least two mutually associated housing-side shell elements (10) and a housing-side pot element (11). A housing part (20b) of the pot element (11) at least partially externally encompasses a housing part (20a) of the shell elements (10).

Description

Electric tools

Technical field

The present invention relates to a kind of electric tools.

Background technology

According to prior art, the known electric tools that constitutes shell-type machine or pot type machine.The shell-type machine comprises the shell-like member of casing side, and its shell-type ground surrounds the function corresponding assembly.In the pot type machine, the functional unit of electric tools is arranged in the jar linear element of a casing side.Also known electric tools with a plurality of discerptible casing spares wherein constitutes the jar linear element of the shell-like member and a casing side of at least one casing side, and they are separated from each other.

Summary of the invention

According to the present invention, propose a kind of electric tools, it has a plurality of discerptible casing spares, comprises the jar linear element of the shell-like member and a casing side of at least two mutual corresponding casing sides that dispose, wherein, the casing spare of jar linear element is held the casing spare of shell-like member from the outside bag at least in part.

In electric tools of the present invention, the casing spare of jar linear element is held the casing spare of shell-like member from the outside bag at least in part.Here for example the shell-like member of two configurations that correspond to each other is surrounded the inside of electric tools in corresponding casing spare.These shell-like member have boundary seam in the axial direction.The jar linear element then has boundary perpendicular to axial direction.Advantageously, according to the present invention, a jar linear element is constructed peripheral greatlyyer than shell-like member, can improve the lubricated of speed changer thus.This that neighboring area that is achieved in that jar linear element surrounds shell-like member is configured to double-walled.Therefore, compare with the electric tools that the grease chamber is set on the casing spare of single wall construction always, the grease chamber that is arranged in the shell parts is limited on the less position.Thereby lubricant or grease advantageously remain near for example speed changer and can improve lubricatedly thus of member to be lubricated, and especially avoids the fast rapid-curing cutback running of speed changer.Also advantageously improve these members life-span of gear for example thus, can not influence appearance design thus.

The zone of being held by jar linear element bag of shell-like member preferably extend in jar linear element as the extension of shell-like member, and wherein shell-like member and jar linear element are connected in series in the axial direction each other.Extension advantageously no longer can be seen from the outside.Therefore the extension of shell-like member advantageously only need satisfy technical requirement, needn't consider the configuration in the appearance design.Then can reach best structure space size in inside.And in appreciable part, promptly the appreciable jar linear element from the outside, electric tools can meet the requirement of ergonomics and design in appearance.

Preferably arrange a speed changer in shell-like member, wherein extension defines a lubricating grease zone that is arranged in the speed changer of shell-like member.Especially extension can closely surround the gear of speed changer.In a particularly preferred embodiment, in the jar linear element, can constitute being arranged in the sealing in the lubricating grease zone in the extension, wherein, the lubricating grease zone is connected with the extension effect.This effect connection obtains like this, that is: grease directly is retained in the gear annex, and this is to the lubricated advantageous effect of mentioning in the beginning part that plays.

In a favourable further configuration, shell-like member and jar linear element can without instrument be coupled to each other, for example by connection, socket connection or the stop of the sealed form of bayonet socket, wherein, the casing spare with the jar linear element of shell-like member is guaranteed can direction not reverse on the contrary.

Description of drawings

Other embodiment of the present invention, the starting point and advantage obtain from the following embodiment of the invention of describing by accompanying drawing, and be irrelevant and do not limit generality with their combinations in claims.

Accompanying drawing is represented:

Fig. 1 a, b, the side view of the shell parts of an embodiment of c electric tools (Fig. 1 a), front view (Fig. 1 c) and the stereogram (Fig. 1 b) seen from side top; And

Fig. 2 a, (Fig. 2 a) and front view (Fig. 2 b) for the side view of the jar shape spare in the embodiment of b Fig. 1.

The specific embodiment

Fig. 1 a, b, c only expresses a shell-like member 10 according to electric tools of the present invention with different stereograms, has settled a driver element of can't see in Fig. 1 16 in its casing spare 20a, for example motor, an and speed changer 13.Fig. 2 a, each expresses a jar linear element 11 with different stereograms b, and its casing spare 20b comprises holding device or the bearing that is used for unshowned driving shaft.

Shell-like member 10 and jar linear element 11 are connected in series and can form mutually connection transmission power and/or that shape is involutory in the axial direction mutually under assembled state, wherein this assembling is preferably carried out without instrument ground, for example pass through the sealed of bayonet socket form, perhaps only need simple assembly tool.Under the unshowned in the drawings assembled state, casing spare 20a, 20b have cylindrical circular substantially cross section.Here, according to the present invention, the casing spare 20a of jar linear element 11 holds the casing spare 20b of shell-like member 10 from the outside bag at least in part.The zone of being held by jar linear element 11 bags of shell-like member 10 here extend in jar linear element 11 as the extension 12 of shell-like member 10.Extension 12 is shown in broken lines surrounding edge and is the part of shell-like member 10 in Fig. 1 a.Extension 12 is especially constructed to such an extent that peripheral bag than jar linear element 11 casing spare 20b that holds extension 12 is little.A projection 17 on the upper periphery of the casing spare 20b of shell-like member 10 is provided with like this, thus when putting jar linear element 11 this projection overlap joint jar linear element 11 in zone 18.Thus, between shell-like member 10 and jar linear element 11, form and be connected reliably.

Extension 12 can not see that under assembled state by this, it does not need to satisfy the requirement in the appearance design from the outside.On the contrary, but the requirement on the configuration adaptive technique of extension 12.Extension 12 especially defines a lubricating grease zone 14 that is arranged in the speed changer 13 of shell-like member 10.Extension 12 surrounds the gear 15 of speed changer 13 as far as possible compactly.Therefore, jar linear element 11 constitutes being arranged on the sealing in the lubricating grease zone 14 in the extension 12.Therefore the size design in this lubricating grease zone 14 must be than medium and small at known electric tools.Therefore, by size is determined in lubricating grease zone 14 like this, grease is retained near the gear 15, can avoid speed changer 13 to do running apace thus.

Claims

1. electric tools, have a plurality of discerptible casing spares, comprise the jar linear element (11) of the shell-like member (10) and a casing side of at least two mutual corresponding casing sides that dispose, it is characterized in that: the casing spare (20a) of jar linear element (11) wraps from the outside at least in part and holds the casing spare (20b) of shell-like member (10).

2. according to the electric tools of claim 1, it is characterized in that: the zone of being held by jar linear element (11) bag of shell-like member (10) extend in jar linear element (11) as the extension (12) of shell-like member (10).

3. according to the electric tools of claim 1 or 2, it is characterized in that: in shell-like member (10), arrange a speed changer (13).

4. according to the electric tools of claim 2 or 3, it is characterized in that: extension (12) limits a lubricating grease zone (14) that is arranged in the speed changer (13) of shell-like member (10).

5. according to one electric tools in the claim 2 to 4, it is characterized in that: extension (12) closely surrounds the gear (15) of speed changer (13).

6. according to the electric tools of claim 4 or 5, it is characterized in that: a jar linear element (11) constitutes being arranged on the sealing in the lubricating grease zone (14) in the extension (12).

7. according to one electric tools in the claim 4 to 6, it is characterized in that: lubricating grease zone (14) are provided with like this, so that it acts on extension (12) and being connected.

8. according to one electric tools in the above claim, it is characterized in that: shell-like member (10) and jar linear element (11) can without instrument interconnect.