CN101209548B

CN101209548B - Electric tool

Info

Publication number: CN101209548B
Application number: CN2006101733999A
Authority: CN
Inventors: 王家达
Original assignee: Positec Power Tools Suzhou Co Ltd
Current assignee: Positec Power Tools Suzhou Co Ltd
Priority date: 2006-12-26
Filing date: 2006-12-26
Publication date: 2011-10-05
Anticipated expiration: 2026-12-26
Also published as: CN101209548A

Abstract

The invention provides an electric tool, comprising a casing (1), a working head (2) and a handle (3) which is movably connected with the casing (1); the handle (3) is provided with at least two installation stations corresponding to the casing (1); the casing (1) is provided with a handle receiving part (11); the handle receiving part (11) is regular polygon locally. After the handle (3) is arranged in the handle receiving part (11), the matching strength between the handle (3) and the casing (1) can be reinforced by the special structure of the regular polygon. Meanwhile, the invention is also provided with a locking device which has simple structure and low manufacture cost and is convenient for conversion of the handle installation stations.

Description

Electric tool

Technical field

The present invention relates to a kind of electric tool, especially a kind of electric tool with a plurality of handles installation stations.

Background technology

The handle of traditional electric tool has two kinds of set-up modes, and the one, handle and housing are made as one or fixedly connect, and the 2nd, handle and housing are rotatable to connect.The situation that is made as one or fixedly connects for handle and housing, when operation, the operator only can be with fixing work angle operation electric tool, as because of ambient influnence, in the time of need operating electric tools with other work angles, the operator is merely able to suitably adjust the angle of arm, and the operator's arm that can cause of a specified duration is ached, and therefore uses and inconvenience.

In order to overcome this defective, more electric tool adopts handle and housing to rotate and connects, when the operator need operate electric tool with different work angles because of environment, only need to adjust the position of handle with respect to housing, promptly can comparatively comfortable angle operate this electric tool.Provide a kind of electric tool of adjusting handle position as U.S. Pat 5161293, this handle is provided with groove, and housing is provided with the Luo hole, by screw handle is fixed on the housing.Unclamp screw, handle can be tightened screw and fix along the direction adjusting angle of groove again.Like this, handle just can rotate with respect to housing, thereby has a plurality of positions that are provided with.In the but this mode weak point is arranged also, promptly handle and housing cause the insufficient strength that connects of handle and housing easily only for screw connects, and along with the increasing of access times, and connecting intensity and also can reducing of screw is easy to damage.

Summary of the invention

The object of the present invention is to provide a kind of electric tool that a plurality of handles are installed station that has, in arbitrary erector position, it is higher that this handle and housing connect intensity, and simple in structure, low cost of manufacture.

The object of the present invention is achieved like this: a kind of electric tool, comprise casing, working head and the handle that flexibly connects with casing, described handle has at least two with respect to casing station is installed, described handle comprises connecting portion and the grip part that links to each other with connecting portion, the lateral surface of described connecting portion is local regular polygon, described casing is provided with the handle resettlement section that is used to accommodate described connecting portion, described handle resettlement section is local regular polygon, install in the station at each, the lateral surface of described connecting portion and described handle resettlement section are complementary, and described connecting portion is contained in described handle resettlement section.

The regular polygon of described part has at least three limits, and the angle between the adjacent two edges equates, simultaneously, the angle of described handle resettlement section adjacent two edges also equates with angle between the described connecting portion adjacent two edges.

Described electric tool also comprises handle locking is fixed on locking device in the handle resettlement section on the casing.

Described locking device comprises the groove that is arranged on the handle and at least one Elastic buckle that is arranged on the casing of rear end, handle resettlement section.

Described locking device comprise be arranged on handle or handle resettlement section the two one of on jack and be arranged on the joint pin that connects with jack on another person.

Described locking device comprises the spring casting die that is arranged on the casing.

Described locking device also is included in the groove that connects of corresponding spring casting die setting on the handle.

Described locking device comprises and is arranged on the cavity with inclined-plane on the casing and is arranged on cam spanner in the cavity, described cam spanner can rotate between the primary importance and the second place around its core, and the end of axle core is formed with tight lock part, when cam spanner is positioned at primary importance, the high end face of cam spanner and the low end face on inclined-plane are inconsistent, thereby driving the axle core moves and the fastening handle, and when cam spanner is positioned at the second place, the high end face of cam handle is then inconsistent with the high end face on inclined-plane, moves outward and release handle thereby drive the axle core.

Compared with prior art, the invention has the beneficial effects as follows: but the handle by multi-angle is provided with is connected on the casing in the mode of the regular polygon of part, because the particularity of regular polygon structure can effectively strengthen the intensity that handle and casing connect.Simultaneously, locking device structure is simple, and low cost of manufacture can also conveniently be carried out the conversion that handle is installed station.

Description of drawings

Below in conjunction with the accompanying drawing and the specific embodiment electric tool of the present invention is described in further detail.

Fig. 1 is the front view of electric tool of the present invention;

Fig. 2 a is the schematic diagram of the rear end of the casing of electric tool of the present invention;

Fig. 2 b is the schematic diagram of the handle of electric tool of the present invention;

Fig. 3 a, 3b, 3c are the handle of the embodiment one of electric tool of the present invention and the assembling schematic diagram of casing;

Fig. 4 is the stereogram of handle among the embodiment two;

Fig. 5 is the schematic diagram of embodiment two middle shells;

Fig. 6 is the handle of embodiment two and the assembling schematic diagram of casing;

Fig. 7 is the handle of embodiment three and the assembling schematic diagram of housing;

Fig. 8 is the schematic diagram that handle is provided with among the embodiment three;

Fig. 9 is the schematic diagram that handle is provided with among the embodiment four;

Figure 10 is the side view of Fig. 9 cam spanner;

Figure 11 is the handle of embodiment four and the assembling schematic diagram of casing;

Wherein, the related elements reference numeral is listed as follows:

1-casing 2-working head 3-handle

11-handle resettlement section 13-Elastic buckle 14-jack

15-spring casting die 16-cavity 17-cam spanner

18-axle core 19-tight lock part

31-connecting portion 32-grip part 33-groove

34-joint pin 35-connects groove

The specific embodiment

See also Fig. 1, be the front view of disclosed electric tool.Electric tool described in the figure can be a drill type electric tool, also can be saw electric tool, and the electric tool of other equal types.This electric tool comprises casing 1, the be arranged in casing 1 front end working head 2 of (the diagram left is a front end), and the handle 3 that is positioned at casing 1 rear end, flexibly connects with casing 1.

See also Fig. 2 a and Fig. 2 b, the handle 3 here comprises connecting portion 31 and grip part 32, and wherein connecting portion 31 is local regular polygon.Be that example describes only in the diagram with three limits, the regular polygon of so-called part comprises the limit of L1, L2, three equal lengths of L3, angle between limit L1 and the L2 is α, angle between limit L2 and the L3 is β, and α equates with β, and for the situation more than three limits, also only be the increase of limit and angle quantity, be not described further here.To connecting portion 31 that should handle 3, also be provided with the handle resettlement section 11 of local regular polygon on the casing 1, be that handle resettlement section 11 has L1 ', L2 ', three limits of L3 ', and the angle between limit L1 ' and the L2 ' is α ', angle between limit L2 ' and the L3 ' is β ', and α ' equates with β '.It should be noted that angle α and angle α ', angle β also equates with angle β '.

See also Fig. 3 a, first embodiment for electric tool of the present invention, corresponding every limit is provided with a groove 33 on this connecting portion 31, and also is provided with Elastic buckle 13 on the casing 1 of 11 rear ends, handle resettlement section, and this Elastic buckle 13 is industry snap device commonly used.Like this, after the operator inserted handle 3 on the handle resettlement section 11 on the casing 1, buckle 13 will connect together with groove 33 buckles on the connecting portion 31, thereby handle 3 is fixed on the casing 1.Because the particularity of regular polygon structure, make handle 3 and casing 1 to connect intensity higher.Think when the angle setting of front hand grip is unfavorable for operating as the operator, can pull open Elastic buckle 13, and handle 3 is taken out, insert fixing after the adjustment angle again, shown in Fig. 3 b, 3c, can allow the operator operate this electric tool with comparatively comfortable work angle.Among this embodiment, more firm for handle 3 is connected on the casing 1, the Elastic buckle 13 of employing is at least one, can be for a plurality of.

See also Fig. 4 to Fig. 6, second embodiment for electric tool of the present invention, different with first embodiment is, here handle 3 adopts joint pin to fixedly connected with casing 1, promptly evenly is provided with joint pin 34 on the connecting portion 31 of handle 3, as shown in Figure 4, and on the handle resettlement section 11 of casing 1, corresponding above-mentioned joint pin 34 is provided with several jacks 14, as shown in Figure 5.During use, the operator inserts joint pin 34 in the jack 14 and both handle 3 can be fixedly connected on the casing 1.Certainly, above-mentioned joint pin 34 also can be provided with on the casing 1, and jack 14 then is set on the handle 3, connects by jack and can reach same effect.Because this mode by joint pin plugs operation through regular meeting, of a specified duration may causing is loosening, therefore can also be in conjunction with the effect that further strengthens locking as embodiment one described locking device.

See also Fig. 7 to Fig. 8, be the 3rd embodiment of electric tool of the present invention, different with first embodiment is that casing 1 is provided with a spring casting die 15.Under the nature, spring casting die 15 is pressed on the connecting portion 31 of handle 3 by the elastic force effect, overcomes spring force and work as the operator, and during this spring casting die 15 of pull-up, 3 on handle is free state, and the operator can take out handle 3 and carry out the angle setting.At this moment, the operator is trip spring casting die 15 again, can reply the impaction state of handle 3.In order to be more conducive to connect, can also on the connecting portion 31 of handle 3, some grooves 35 that connect evenly be set corresponding spring casting die 15, spring casting die 15 can be extend into connect in the groove 35, to improve the degree of accuracy and the intensity that handle 3 and casing 1 connect.

Need to prove that among above-mentioned three kinds of embodiment, after locking device unclamped, handle 3 was to take out along the direction perpendicular to paper with respect to casing 1, purpose is to make handle 3 to become the accessory that can change and uses.

See also Fig. 9 to Figure 11, the 4th embodiment for electric tool of the present invention, different with first embodiment is, casing 1 is provided with a cavity 16 with inclined-plane, one cam spanner 17 is threadedly connected in the cavity 16, this cam spanner 17 can rotate between a primary importance and the second place around its core 18, and the end of axle core 18 is formed with tight lock part 19.When cam spanner 17 is positioned at primary importance, the high end face of cam spanner 17 and the low end face on inclined-plane are inconsistent, thereby driving axle core 18 moves and fastening handle 3, and when cam handle 17 is positioned at the second place, the high end face of cam handle 17 is then inconsistent with the high end face on inclined-plane, thereby drives axle core 18 outer moving and release handle 3.At this moment, the space of handle resettlement section 11 will increase, and handle 3 can be rotated in handle resettlement section 11.Then, pull cam spanner 17 once more, handle 3 is locked uses this electric tool.

Certainly, in the present embodiment only with the formal specification of cam spanner the mode of set lever, can also realize the locking of handles 3 by some other common known technologies, be threaded in knob on the core 18 as rotation, make a core 18 produce translation etc., no longer be described further here.

In addition, owing to added cam spanner 17 and axle core 18 in the present embodiment, described handle 3 can't take out in the handle resettlement section 11 on casing 1, and the setting angle of handle 3 can only be set by the mode of rotation.

The connecting portion that this handle only has been described in the foregoing description adopts the regular polygon setting on three limits, thereby also only limit to three kinds of angles being provided with of angle, in order to use this electric tool with better work angle, the connecting portion of described handle can be arranged to use the regular polygon more than three limits, thereby handle is had more station can be installed.

Claims

1. electric tool, comprise casing (1), working head (2) and the handle (3) that flexibly connects with casing (1), described handle (3) has at least two with respect to casing (1) station is installed, it is characterized in that: described handle (3) comprises connecting portion (31) and the grip part (32) that links to each other with connecting portion (31), the lateral surface of described connecting portion (31) is local regular polygon, described casing (1) is provided with the handle resettlement section (11) that is used to accommodate described connecting portion (31), described handle resettlement section (11) is local regular polygon, install in the station at each, the lateral surface of described connecting portion (31) and described handle resettlement section (11) are complementary, and described connecting portion (31) is contained in described handle resettlement section (11).

2. electric tool as claimed in claim 1, it is characterized in that: the regular polygon of described part has at least three limits (L1, L1 ', L2, L2 ', L3, L3 '), and the angle between the adjacent two edges (α, α ', β, β ') equates, simultaneously, the angle of described handle resettlement section (11) adjacent two edges (α ', β ') also equates with angle (α, β) between described connecting portion (31) adjacent two edges.

3. electric tool as claimed in claim 2 is characterized in that: described electric tool also comprises be locked locking device in the handle resettlement section (11) on casing (1) of handle (3).

4. electric tool as claimed in claim 3 is characterized in that: described locking device comprises the groove (33) that is arranged on the handle (3) and is arranged at least one Elastic buckle (13) on the casing (1) of rear end, handle resettlement section (11).

5. electric tool as claimed in claim 3 is characterized in that: described locking device comprise be arranged on handle (3) or handle resettlement section (11) the two one of on jack (14) and be arranged on the joint pin (14) that connects with jack (14) on another person.

6. electric tool as claimed in claim 3 is characterized in that: described locking device comprises the spring casting die (15) that is arranged on the casing (1).

7. electric tool as claimed in claim 6 is characterized in that: described locking device is included in also that corresponding spring casting die (15) on the handle (3) is provided with connects groove (35).

8. electric tool as claimed in claim 3, it is characterized in that: described locking device comprises the cavity with inclined-plane (16) that is arranged on the casing (1) and is arranged on the interior cam spanner (17) of cavity (16), described cam spanner (17) can rotate between the primary importance and the second place around its core (18), and the end of axle core (18) is formed with tight lock part (19), when cam spanner (17) when being positioned at primary importance, the high end face of cam spanner (17) and the low end face on inclined-plane are inconsistent, thereby driving axle core (18) moves and fastening handle (3), and when cam spanner (17) when being positioned at the second place, the high end face of cam handle (17) is then inconsistent with the high end face on inclined-plane, and axle core (18) is outer to be moved and release handle (3) thereby drive.