CN102476369A - Improved structure of pneumatic impact wrench - Google Patents
Improved structure of pneumatic impact wrench Download PDFInfo
- Publication number
- CN102476369A CN102476369A CN2010105552096A CN201010555209A CN102476369A CN 102476369 A CN102476369 A CN 102476369A CN 2010105552096 A CN2010105552096 A CN 2010105552096A CN 201010555209 A CN201010555209 A CN 201010555209A CN 102476369 A CN102476369 A CN 102476369A
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- plastic casing
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Abstract
The invention discloses an improved structure of a pneumatic impact wrench. In a body, a motor shell seat and a motor assembly are fixed in a plastic shell; the motor assembly is provided with a rotor in a cylinder; the rotor extends out of a revolving shaft, and is supported by a bearing; the hardness of a shell of the motor shell seat is higher than that of the plastic shell; the shell is hollow; the two ends of the shell are penetrated to form a chamber for accommodating the cylinder; in the shell, a barrel ring projects out of the inner wall of the chamber to block the cylinder; and the back end of the shell is enclosed by a shell cover in a combined way. Due to the adoption of the improved structure of the pneumatic impact wrench provided by the invention, the weight of the impact wrench is reduced, sufficient structural strength is achieved, the improved structure can be manufactured at low cost in an environmentally-friendly way without excessively considering precision among members, and a motor assembly is assembled in the impact wrench at an accurate position.
Description
Technical field
The present invention is relevant a kind of pneumatic tool, refers to a kind of improvement structure of Pneumatic immpacting spanner especially.
Background technology
As shown in Figure 5, be the body 8 of commonly using the Pneumatic immpacting spanner, in body, have an accommodation space 80 and supply to be installed with rotor 81, the impact wrench that this states and comprise such as other member (not shown) such as driven unit composition.Commonly use that the body 8 of impact wrench is common to be processed with aluminium; Though structurally have between intensity and the member of metal material and can keep precision accurately; But aluminium has belonged to the light and moderate material of intensity in the metal material, under cost consideration, is difficult to other metal material and replaces, so whole difficult the alleviating of weight of impact wrench; Therefore, the body improvement with aluminium promptly arises for plastic body.
Please consult Fig. 5 again, though the body 8' that processes with plastic material can alleviate the whole weight of impact wrench again, precisely because structure is subject to external influence and is out of shape; For example climate change causes expanding with heat and contract with cold of plastic material; The distortion that is perhaps caused because of bump all can make the start of rotor 81' in accommodation space 80' have some setbacks, and then the effective utilization of the spanner that impacts; For solving this problem, so there is another kind of structure-improved to produce.
Seeing also Fig. 6 again, is to have structure improved Pneumatic immpacting spanner 9, and the body 90 among the figure is a plastic material; For solving the not good problem of plastic material structural strength; Dying is provided with housing 92 reinforcement of a metal material in body 90, this rotor 91 is to be located in this housing 92, and this housing 92 is as shown in Figure 7; Wherein have one be installed with rotor 91 room 920; And as shown in Figure 8, housing 92 has an axis hole 921 in an end of room 920 for sealing, and housing 92 is then opened and covered with a lid 93 in the other end of room 920; This lid 93 also has an axis hole 930 coaxial with this axis hole 921, with the rotor 91 that is pivoted.
Above-mentioned housing 92 can be summarized following problem:
1, the axle center A of this room 920 is eccentric slightly up for housing 92; The axle center B of axis hole 921 is eccentric down with respect to the axle center A of this room 920 again; The axis hole 930 of lid 93 again must be coaxial with this axis hole 921 after covering housing 92; It is thus clear that the desired during fabrication precision of housing 92 and lid 93 is high, make housing 92 manufacturing costs high, and fraction defective obviously increase.
2, visible by the three-dimensional appearance of housing 92; It must be reprocessed after cast form earlier and form; The whole appearance profile of this housing 92 is complicated, so being molded into when designing of shaping housing 92 also relatively improved degree of difficulty, and housing 92 itself must be in the inwall of room 920 via surface treatment to strengthen its case hardness; Except having high manufacturing cost, the surface-treated processing procedure also can cause the pollution of environment high.
Therefore, how to solve the above-mentioned problem of commonly using the Pneumatic immpacting spanner, be the emphasis place that institute of the present invention desire solves.
Summary of the invention
Main purpose of the present invention; Be to solve the above problems and provide a kind of improvement structure of Pneumatic immpacting spanner; Make impact wrench reach lightweight and have enough structural strengths; And must excessively not consider the precision between member, can reach the manufacturing of comparatively environmental protection at lower cost, and set of locations be loaded in the impact wrench to make motor sub-assembly comply with accurately.
The objective of the invention is to realize like this:
For reaching aforesaid purpose; The present invention is a switch module of in a body, establishing a motor sub-assembly and a control air inlet CD-ROM drive motor assembly; Wherein this body be a lever one links a plastic casing in the top, have an air intake duct in this lever, this air intake duct opens and closes in establishing this switch module control midway; And this motor sub-assembly is contained in and has an air chamber in the cylinder to install a rotor; And in the rear and front end of this cylinder respectively with a protecgulum and a back lid may enclose, rotor has the rotating shaft of stretching out protecgulum and bonnet respectively at front and back, and protecgulum and bonnet are supported this two rotating shaft pivotly respectively at arranged outside one bearing; This rotor connects one in the rotating shaft of stretching out protecgulum and impacts assembly; It is characterized in that: this motor sub-assembly is fixed in the motor shell block, and this motor shell block is fixed in this plastic casing, and this motor sub-assembly has several therewith and is communicated to outside steam vent by air admission hole and several that air intake duct is communicated with air chamber by air chamber between the motor shell block; This motor shell block comprises a shell and a casing cover; The hardness of this shell is greater than this plastic casing, and shell hollow and penetrate two ends and form a room to be installed with cylinder, and this cylinder is inserted in the room by the room rear and fixed with the motor shell block; The room of this shell is in having a baffle ring to stop the protecgulum of this cylinder near the inwall that impacts assembly one end, the rear end of shell combines with this casing cover and seals.
This motor shell block radially extends a dish portion in the front end court of shell; Shell fits in this plastic casing with this medial surface that coils portion in plastic casing; The lateral surface that in addition fits in this dish portion with an outer cover is to be covered with this impact assembly; And penetrate and pass this dish portion outward by plastic casing and fix, and should dish portion and be packed in this motor shell block hermetically in plastic casing with the outer cover compressing with this outer cover screw lock with several screws.
This casing cover passes and is locked on the rear end of this shell with several screws and fixes.
These several steam vents are located at this shell respectively and cylinder is extremely outside to be communicated with this air chamber; These several air admission holes are located at this casing cover and bonnet respectively to be communicated with this air intake duct and air chamber.
This protecgulum and bonnet are provided with a bearing block respectively towards the outside, each bearing is located at respectively in the bearing block of respective side.
This baffle ring is that room inwall by shell is to projecting inward.
The improvement structure of Pneumatic immpacting spanner provided by the invention; Make impact wrench reach lightweight and have enough structural strengths; And must excessively not consider the precision between member, can reach the manufacturing of comparatively environmental protection at lower cost, and set of locations be loaded in the impact wrench to make motor sub-assembly comply with accurately.
Above-mentioned and other purpose and advantage of the present invention are not difficult from following detailed description and accompanying drawing of selecting embodiment for use, to obtain to understand in depth.
Certainly, the present invention or allows differently on some part in the arrangement of part, but the embodiment that is selected for use then in this specification, specifies, and in accompanying drawing, shows its structure.
Description of drawings
Fig. 1 is a stereo appearance figure of the present invention.
Fig. 2 is a three-dimensional exploded view of the present invention.
Fig. 3 is a sectional structure chart of the present invention.
Fig. 4 is another sectional structure chart of the present invention.
Fig. 5 is a body outside drawing of commonly using the Pneumatic immpacting spanner.
Fig. 6 is another sectional structure chart of commonly using the Pneumatic immpacting spanner.
Fig. 7 is the housing three-dimensional structure diagram of commonly using the Pneumatic immpacting spanner of Fig. 6.
Fig. 8 is the housing sectional structure chart of commonly using the Pneumatic immpacting spanner of Fig. 6.
The specific embodiment
See also Fig. 1 to Fig. 4, person shown in the figure is the example structure that the present invention selected for use, and this only supplies the usefulness of explanation, in patent application, does not receive the restriction of this kind structure.
The present invention provides a kind of improvement structure of Pneumatic immpacting spanner, and it is like Fig. 1～shown in Figure 2, comprises that in present embodiment a body 1, a switch module 2, a motor shell block 3, a motor sub-assembly 4 and impact assembly 5, wherein:
Like Fig. 2～shown in Figure 3; This body 1 is that a lever 10 links a plastic casing 11 in the top, and this lever 10 is the structure of one with plastic casing 11, has an air intake duct 12 in this lever 10; This air intake duct 12 is in lever, to extend in this plastic casing 11; This plastic casing 11 is a hollow housing, wherein has an accommodation space 110, and this air intake duct 12 exposes the connecting portion 120 of connection gases at high pressure in the bottom of lever 10; And air intake duct 12 is established this switch module 2 in midway, and the gases at high pressure in these switch module 2 control air intake ducts 12 are led in the plastic casing 11 by connecting portion 12.
Like Fig. 2～shown in Figure 3; This motor shell block 3 is located in the accommodation space 110 of this plastic casing 11; This motor shell block 3 comprises a shell 30 and 31 compositions of a casing cover, and this shell of stating 30 is that metal material is processed in present embodiment, and its hardness is greater than this plastic casing 11; Has a room 300 in the shell 30; The shell 30 that this room 300 is a hollow penetrates two ends and forms, and visible shell 30 has plurality of rows pore 301 among the figure in the top side, and has some air admission holes 302 in the bottom of shell 30.Therefore, when plastic casing 11 expanded with heat and contract with cold because of external environment or is impacted, the motor shell block 3 in plastic casing 11 was still kept its structure external form in plastic casing 11, can not be out of shape with plastic casing 11.
Like Fig. 2～shown in Figure 4; This motor sub-assembly 4 comprises a cylinder 40, a rotor 41, a protecgulum 42, a bonnet 43 and two bearings 44,45; This motor sub-assembly 4 is to be inserted in the room 300 by the rear of this shell 30 with cylinder 40; Have an air chamber 400 in this cylinder 40, this rotor 41 is to be installed in the air chamber 400 of cylinder 40, in this protecgulum 42 of front end combination of cylinder 40; In addition then combine this bonnet 43 in the rear end of this cylinder 40, with the air chamber 400 of sealing cylinder 40 and fixing these rotors 41 in wherein.This cylinder 40 has the steam vent 301 that 401 pairs at plurality of rows pore should motor shell seat 3 in the top side; Discharge in order to do the waste gas in the air supply chamber 400; Cylinder 40 also has the air admission hole 302 that 402 pairs of some air admission holes should motor shell seat 3 in the bottom, in order to do supplying high-pressure air source to get in the air chamber 400.
Like Fig. 2～shown in Figure 3; Rotor 41 in the aforementioned motor sub-assembly 4 has respectively at front end that a rotating shaft 410 is stretched out outside the protecgulum 42 and connects with this impact assembly 5; And having a rotating shaft 411 in addition in the rear end, rotor 41 stretches out bonnet 43; One of which bearing 44 is positioned the bearing block 420 in protecgulum 42 outsides and supports this rotating shaft 410 pivotly, and another bearing 45 then is positioned the bearing block 430 in bonnet 43 outsides and supports this rotating shaft 411 pivotly.The room 300 of this shell 30 near the inwall that impacts assembly 5 one ends to the protecgulum 42 of a projecting inward baffle ring 303 to stop cylinder 40; And cover room 300 in the rear end of plastic casing 11 with this casing cover 31; This casing cover 31 passes and is locked on the rear end of this shell 30 with several screws 32 and fixes in present embodiment, to locate cylinder 40 in room 300.
Like Fig. 2～shown in Figure 3; The motor shell block 3 of present embodiment radially extends a dish portion 304 in the front end court of shell 30; Motor shell block 3 is behind motor sub-assembly 4 location; Its shell 30 medial surface with this dish portion 304 in plastic casing 11 fits in this plastic casing 11, and this impact assembly 5 is provided with the lateral surface that an outer cover 6 fits in this dish portion 304 outward, and is penetrated outward by plastic casing 11 with several screws 13; Several screws 13 also pass this dish portion 304 and fix with these outer cover 6 screw locks, utilize these outer cover 6 compressings should dish portion 304 and this motor shell block 3 of packing hermetically in plastic casing 11.
Visible by above-mentioned explanation; 11 weight that can alleviate impact wrench integral body as plastic material of the plastic casing of this body 1; And in plastic casing 11, be provided with the motor shell block 3 of this metal material; Avoid distorting with the internal structure of reinforced plastics housing 11, and motor sub-assembly 4 is that Modularly is located among this motor shell block 3 that the rotating shaft 410,411 of its rotor 41 rear and front ends is hubbed at the bearing 44,45 in the protecgulum 42 and bonnet 43 outsides respectively; Rotor 41 by this can be in the air chamber 400 of cylinder 40 driven in rotation; And the shell 30 of motor shell block 3 and casing cover 31 be only in order to locating whole group motor sub-assembly, motor shell block 3 need not be like the housing commonly used at casing cover 31 shaping axis holes articulating rotor 41, so motor shell block 3 promptly must be with than the high precision manufacturing; Only must can fixing motor assembly 4 can make motor sub-assembly comply with accurately set of locations is loaded in the impact wrench; And shell 30 does not need surface treatment in the inwall of room 300, thus all can relative reducing cost on member and processing procedure, and can in the manufacturing process of member, not cause the pollution of environment.
The announcement of the above embodiment is in order to explanation the present invention, is not in order to restriction the present invention, so the displacement of the change of numerical value or equivalent elements must be subordinate to category of the present invention such as.
By above detailed description, can make and know the clear the present invention of this art and can reach aforementioned purpose really.
Claims (6)
1. the improvement of a Pneumatic immpacting spanner is constructed; It establishes the switch module of a motor sub-assembly and a control air inlet CD-ROM drive motor assembly in a body; It is characterized in that: this body be a lever one links a plastic casing in the top, have an air intake duct in this lever, this air intake duct opens and closes in establishing this switch module control midway; And this motor sub-assembly is contained in and has an air chamber in the cylinder to install a rotor; And in the rear and front end of this cylinder respectively with a protecgulum and a back lid may enclose, rotor has the rotating shaft of stretching out protecgulum and bonnet respectively at front and back, and protecgulum and bonnet are supported this two rotating shaft pivotly respectively at arranged outside one bearing; This rotor connects one in the rotating shaft of stretching out protecgulum and impacts assembly; It is characterized in that: this motor sub-assembly is fixed in the motor shell block, and this motor shell block is fixed in this plastic casing, and this motor sub-assembly has several therewith and is communicated to outside steam vent by air admission hole and several that air intake duct is communicated with air chamber by air chamber between the motor shell block; This motor shell block comprises a shell and a casing cover; The hardness of this shell is greater than this plastic casing, and shell hollow and penetrate two ends and form a room to be installed with cylinder, and this cylinder is inserted in the room by the room rear and fixed with the motor shell block; The room of this shell is in having a baffle ring to stop the protecgulum of this cylinder near the inwall that impacts assembly one end, the rear end of shell combines with this casing cover and seals.
2. construct according to the improvement of the described Pneumatic immpacting spanner of claim 1; It is characterized in that: this motor shell block radially extends a dish portion in the front end court of shell; Shell fits in this plastic casing with this medial surface that coils portion in plastic casing; The lateral surface that in addition fits in this dish portion with an outer cover is to be covered with this impact assembly; And penetrate and pass this dish portion outward by plastic casing and fix, and should dish portion and be packed in this motor shell block hermetically in plastic casing with the outer cover compressing with this outer cover screw lock with several screws.
3. according to the improvement structure of the described Pneumatic immpacting spanner of claim 1, it is characterized in that: this casing cover passes and is locked on the rear end of this shell with several screws and fixes.
4. according to the improvement structure of the described Pneumatic immpacting spanner of claim 1, it is characterized in that: these several steam vents are located at this shell respectively and cylinder is extremely outside to be communicated with this air chamber; These several air admission holes are located at this casing cover and bonnet respectively to be communicated with this air intake duct and air chamber.
5. according to the improvement structure of the described Pneumatic immpacting spanner of claim 1, it is characterized in that: this protecgulum and bonnet are provided with a bearing block respectively towards the outside, each bearing is located at respectively in the bearing block of respective side.
6. according to the improvement of the described Pneumatic immpacting spanner of claim 1 structure, it is characterized in that: this baffle ring is that room inwall by shell is to projecting inward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105552096A CN102476369A (en) | 2010-11-23 | 2010-11-23 | Improved structure of pneumatic impact wrench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105552096A CN102476369A (en) | 2010-11-23 | 2010-11-23 | Improved structure of pneumatic impact wrench |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102476369A true CN102476369A (en) | 2012-05-30 |
Family
ID=46089206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105552096A Pending CN102476369A (en) | 2010-11-23 | 2010-11-23 | Improved structure of pneumatic impact wrench |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102476369A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104260035A (en) * | 2014-09-24 | 2015-01-07 | 上海海事大学 | Turbo-charged pneumatic wrench |
| CN105134302A (en) * | 2015-08-26 | 2015-12-09 | 王永兴 | High-pressure aerodynamic conversion device |
| US11685036B2 (en) | 2020-07-27 | 2023-06-27 | Techtronic Cordless Gp | Motor mounting assembly for a power tool |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5992539A (en) * | 1999-03-16 | 1999-11-30 | Lin; Chen-Yang | Pneumatically driven power tool |
| US6059049A (en) * | 1999-03-09 | 2000-05-09 | Lin; Chen-Yang | Air cylinder apparatus for a pneumatically driven power tool |
| US20030230423A1 (en) * | 2002-06-14 | 2003-12-18 | S.P. Air Kabusiki Kaisha | Pneumatic rotary tool |
| CN1494988A (en) * | 2002-09-13 | 2004-05-12 | 株式会社信浓制作所 | Pneumatic socket wrench |
| US6883619B1 (en) * | 2004-01-22 | 2005-04-26 | Yung-Chao Huang | Bidirectional pneumatic impact wrench |
-
2010
- 2010-11-23 CN CN2010105552096A patent/CN102476369A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6059049A (en) * | 1999-03-09 | 2000-05-09 | Lin; Chen-Yang | Air cylinder apparatus for a pneumatically driven power tool |
| US5992539A (en) * | 1999-03-16 | 1999-11-30 | Lin; Chen-Yang | Pneumatically driven power tool |
| US20030230423A1 (en) * | 2002-06-14 | 2003-12-18 | S.P. Air Kabusiki Kaisha | Pneumatic rotary tool |
| CN1494988A (en) * | 2002-09-13 | 2004-05-12 | 株式会社信浓制作所 | Pneumatic socket wrench |
| US6883619B1 (en) * | 2004-01-22 | 2005-04-26 | Yung-Chao Huang | Bidirectional pneumatic impact wrench |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104260035A (en) * | 2014-09-24 | 2015-01-07 | 上海海事大学 | Turbo-charged pneumatic wrench |
| CN104260035B (en) * | 2014-09-24 | 2016-08-24 | 上海海事大学 | Turbocharging type pneumatic impact spanner |
| CN105134302A (en) * | 2015-08-26 | 2015-12-09 | 王永兴 | High-pressure aerodynamic conversion device |
| US11685036B2 (en) | 2020-07-27 | 2023-06-27 | Techtronic Cordless Gp | Motor mounting assembly for a power tool |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120530 |