CN101309778B - Screw striking machine - Google Patents
Screw striking machine Download PDFInfo
- Publication number
- CN101309778B CN101309778B CN2006800429909A CN200680042990A CN101309778B CN 101309778 B CN101309778 B CN 101309778B CN 2006800429909 A CN2006800429909 A CN 2006800429909A CN 200680042990 A CN200680042990 A CN 200680042990A CN 101309778 B CN101309778 B CN 101309778B
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- CN
- China
- Prior art keywords
- driven wheel
- cylinder
- screwdriver bit
- screw
- rotating shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
- B25B21/02—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose with means for imparting impact to screwdriver blade or nut socket
- B25B21/023—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose with means for imparting impact to screwdriver blade or nut socket for imparting an axial impact, e.g. for self-tapping screws
Abstract
A striking piston (3) is connected to a driver bit (4). The driver bit (4) has a bottom portion which is movably engaged in the axial direction with a central through hole (14) of a drive gear (13) arranged below a striking cylinder (2). The striking piston (3) is operated in the axial direction of the driver bit (4) by compressed air so that the driver bit (4) strikes the a screw to be struck into a material to be struck by a predetermined amount. The compressed air rotates the driver bit (4) together with the drive gear (13) and the screw is screwed into the material to be struck. Two rotation transmission rollers (15) are engaged respectively with at least two sides of the driver bit (4) inside the through hole (14) of the drive gear (13). Each of the rollers (15) has a bearing portion of a rotary shaft 17 formed inside the gear portion (22) at the outer circumference of the drive gear (13).
Description
Technical field
The present invention relates to bolt beating machine, will utilize the rotation of the driven wheel that compressed air rotates to pass to the rotary power transmission mechanism of screw screwdriver bit when particularly after hitting, being screwed into.
Background technology
Generally, bolt beating machine has the strike mechanism and the screw-driving mechanism of drivescrew.On can being contained in the strike piston that hits in the cylinder along the vertical direction sliding freely, being combined with section is polygonal screw screwdriver bit.The bottom of screw screwdriver bit is entrenched in the through hole of driven wheel central authorities movably, and this driven wheel is disposed at the bottom of above-mentioned strike cylinder.Make the strike mechanism action by supplying to the compressed air that hits cylinder, and make and hit the axial action of piston, thereby drivescrew is hit and its degree that is driven into part with the head emersion is driven into is driven in the part along the screw screwdriver bit.As drive source, above-mentioned screw screwdriver bit is rotated with above-mentioned driven wheel above-mentioned compressed air, above-mentioned drivescrew is screwed into is driven in the part thus by above-mentioned screw-driving mechanism.
For example in Japanese kokai publication hei 09-290376 communique, Japanese kokai publication hei 09-141571 communique etc., disclose this strike mechanism and tightened mechanism.
In bolt beating machine in the past, shown in Figure 2 as No. the 3520442nd, Japan Patent, the height of above-mentioned driven wheel must be the amount of the stroke of steel ball.Therefore, the height of driven wheel itself becomes big.
And even cylinder is configured in the bottom (or top) of driven wheel, the whole height of cylinder and driven wheel can step-down yet.
With respect to this, the dead eye of rotating shaft that also can be by making cylinder connects the side of driven wheel, in the inboard of the through hole of the driven wheel central authorities that the screw screwdriver bit connects cylinder is set.Thus, owing to whole height is in the altitude range of driven wheel, thereby the whole height step-down.
But when making the dead eye of the rotating shaft of above-mentioned cylinder connect outer peripheral face to driven wheel, the end of above-mentioned rotating shaft protrudes in the surface of tooth portion or the undercapacity of tooth portion a little.Therefore, be difficult for engagement during with other gears engaged, or damage tooth portion when rotated.
With respect to this, when dead eye is made as the length that can not arrive the driven wheel outer peripheral face, be difficult to the rotating shaft of a back-up roller.
Summary of the invention
One or more embodiment of the present invention provides the rotary power transmission mechanism in a kind of bolt beating machine, can reduce the whole height of instrument and realizes densification, and can not damage the tooth portion of driven wheel, and is good with other gear meshing.
One or more embodiment according to the present invention provides a kind of bolt beating machine, on being contained in the strike piston that hits in the cylinder along the vertical direction sliding freely, be polygonal screw screwdriver bit in conjunction with section, and make the bottom of screw screwdriver bit can be chimeric with the through hole of the driven wheel central authorities that are configured in above-mentioned strike cylinder bottom movably vertically, make the axial action of strike piston by supplying to the compressed air that hits cylinder along the screw screwdriver bit, to drivescrew hit and with its with ormal weight squeeze into be driven into part after, with above-mentioned compressed air as drive source, above-mentioned screw screwdriver bit is rotated with above-mentioned driven wheel, thus above-mentioned drivescrew is driven into and is driven in the part, wherein, dispose the rotation that engages with at least 2 sides of above-mentioned screw screwdriver bit respectively in the inboard of the through hole of above-mentioned driven wheel and transmit and use cylinder, the bearing portion of the rotating shaft of each cylinder is formed at the inboard of the tooth portion of above-mentioned driven wheel periphery.
In above-mentioned bolt beating machine, owing to dispose the rotation transmission cylinder that engage with at least 2 sides of above-mentioned screw screwdriver bit respectively in the inboard of the through hole of driven wheel, the bearing portion of the rotating shaft of each cylinder is formed between the tooth portion of the inner surface of above-mentioned through hole and driven wheel periphery, thereby driven wheel portion and cylinder can be configured on the equal height.Therefore, can reduce the whole height of bolt beating machine, thus densification that can implementation tool.
And,, thereby can reduce transmission loss because transmission power that the rotation of driven wheel drives and the transmission power that is delivered to the screw screwdriver bit from rotating shaft, cylinder is on same level.
And, because the increase of the tip diameter of driven wheel, thereby can reduce the progression that arrives the idler gear of driven wheel from power sources such as air motors.
And, also can in above-mentioned bearing portion, form the accepting groove that above-mentioned rotating shaft and cylinder are accommodated in rotation freely by the end face from above-mentioned driven wheel, have in the upper fixed of above-mentioned accepting groove to prevent the get loose retainer of usefulness of rotating shaft.
Because the bearing portion of rotating shaft can be made of the get loose retainer of usefulness of rotating shaft that prevents of the accepting groove on the end face that is formed at driven wheel and its top, thereby processing is simple, and the installation exercise of rotating shaft is also very simple, can also suppress cost lower.
And the height of above-mentioned driven wheel and cylinder also can be roughly the same.
If driven wheel and cylinder are configured in equal height, then can reduce the whole height of bolt beating machine, but the densification of implementation tool.
Record and claims by embodiment can be understood other features and effect.
Description of drawings
Fig. 1 is the longitudinal sectional view of bolt beating machine.
Fig. 2 is the amplification view of the major part of above-mentioned bolt beating machine.
Fig. 3 A is the vertical view of driven wheel.
Fig. 3 B is the cutaway view of the 3B-3B line of Fig. 3 A.
Fig. 3 C is the cutaway view of the 3C-3C line of Fig. 3 A.
Fig. 3 D is the cutaway view of the 3D-3D line of Fig. 3 B.
Fig. 4 is the decomposition diagram of driven wheel.
Fig. 5 is the perspective view of the driven wheel after finishing.
Label declaration
2 hit cylinder
3 hit piston
4 screw screwdriver bits
13 driven wheels
15 cylinders
18 first accepting grooves
22 tooth portions
The specific embodiment
Below, with reference to the accompanying drawings exemplary embodiments of the present invention is described.
Fig. 1 is the longitudinal sectional view of the bolt beating machine of exemplary embodiments of the present invention.This bolt beating machine is provided with in the inside of tool body 1 and hits mechanism and screw-driving mechanism.Strike mechanism has the strike piston 3 and the one of hitting cylinder 2, being arranged in the strike cylinder 2 sliding freely and is combined in the screw screwdriver bit 4 that hits on the piston 3.In hitting mechanism, by trigger 5 is carried out pull operation, make main valve 7 carry out opening action when making trigger valve 6 actions, supply with compressed air from the air chamber (being connected with the air supply source) 8 of storing compressed air in hitting cylinder 2, screw screwdriver bit 4 is squeezed into action.And, screw-driving mechanism (not shown), the power by air motor makes screw screwdriver bit 4 with screw-driving.In screw-driving mechanism, make above-mentioned strike mechanism action and the drivescrew that supplies to chain-drive section 10 from nail casket 9 is hit, thereby with its with ormal weight be driven into be driven into part after, main valve 7 carries out opening action and will supply to the air motor 11 from the compressed-air actuated part that air chamber 8 flows into.The revolving force of air motor 11 passes to driven wheel 13 by the reduction gearing 12 of centre, and after the rotation of driven wheel 13 passed to screw screwdriver bit 4, screw screwdriver bit 4 was screwed into the drivescrew of being squeezed into by screw screwdriver bit 4 thus around its axle center rotation.
Wherein, the afore mentioned rules scale shows screw is squeezed into the degree that is driven into behind the part and bad connection can not take place when being screwed into screw.For example be the degree of screw from upper surface emersion 3～15mm of being driven into part.
In above-mentioned screw-driving mechanism, as shown in Figure 2, dispose freely respectively with 2 rotations of the mutual relative side engaging of screw screwdriver bit 4 in the interior sideway swivel of the through hole 14 of driven wheel 13 and to transmit with cylinders 15.
Promptly, as Fig. 3 A to Fig. 3 D and shown in Figure 4, on the axial side end face of the rotation of driven wheel 13, except 2 screwed holes 16, also at a mutually relative side opening forming accepting groove 20, this accepting groove 20 is made of first accepting groove 18 of accommodating rotating shaft 17 and second accepting groove 19 of accommodating the part of cylinder 15.First accepting groove 18 is formed at the inboard of the tooth portion (tooth) 22 of periphery, and the diameter of its degree of depth and rotating shaft 17 is identical or slightly form deeply than it.
And, the end face of the opposition side of the bottom no show driven wheel 13 of second accepting groove 19.And, on the inward flange of the through hole 14 of above-mentioned driven wheel 13,, outstandingly from an above-mentioned side end face form a pair of circular-arc tab 23 in a side adjacent and relative with above-mentioned accepting groove 20.And, from the outstanding weak point tube portion 29 that forms of opposite side end face.
Configuration is during cylinder 15 in above-mentioned accepting groove 20, and cylinder 15 is installed in the central authorities of rotating shaft 17, is configured under this state in the above-mentioned accepting groove 20.On above-mentioned accepting groove 20, be fixed for the retainer 24 that prevents that rotating shaft from getting loose with screw fixation method.Retainer 24 is formed with criss-cross peristome 24a and screwing through hole 25 in the central for diameter and the roughly the same plectane of circle that does not comprise the tooth top of driven wheel 14.The inward flange of part in above-mentioned peristome 24a, corresponding with accepting groove 20 is formed with by paw 26.By the hold-down screw 28 that inserts from screwing through hole 25 above-mentioned retainer 24 is fixed on the screwed hole 16 of driven wheel 13 end faces.At this moment, by the above-mentioned rotating shaft 17 of pushing first accepting groove 18 that exposes above-mentioned accepting groove 20 by paw 26.Thus, form the bearing portion of rotating shafts 17, above-mentioned rotating shaft 17 accepting groove 20 outsides that can not get loose by first accepting groove 18 and retainer 24.At last, around the circular-arc tab 23 of driven wheel 13 and the short tube portion 29 of opposition side dispose bearing 27 on every side.Thus, finish as shown in Figure 5 driven wheel 13.
In addition, screw screwdriver bit 4 is for to have the shape in two cross sections, and when constituting the through hole 14 that connects driven wheel 13, the side of its side opposite each other engages with above-mentioned 2 cylinders 15.
According to said structure, because cylinder 15 also rotate during driven wheel 13 rotation, thereby the revolving force of driven wheel 13 passes to screw screwdriver bit 4, and screw screwdriver bit 4 rotates and drivescrew is screwed into is driven in the part.
As mentioned above, because the cylinder 15 of the rotation transmission usefulness that engage with 2 sides of above-mentioned screw screwdriver bit 4 respectively in the configuration of the inboard of the through hole 14 of driven wheel 13, thereby driven wheel 13 and cylinder 15 can be configured on the identical height, thereby can reduce the whole height of bolt beating machine, but the densification of implementation tool.
And,, thereby can not damage tooth portion 22 or cause and other poor gear engagement because the bearing portion of the rotating shaft 17 of each cylinder 15 is formed on the inboard of the tooth portion 22 of driven wheel 13 peripheries.
And,, thereby can reduce transmission loss because transmission power that the rotation of driven wheel 13 drives and the transmission power that is delivered to screw screwdriver bit 4 from rotating shaft 17, cylinder 15 is on same level.
And, because the increase of the tip diameter of driven wheel 13, thereby can reduce the progression that arrives the idler gear of driven wheel 13 from power sources such as air motors.
In addition, because the bearing portion of rotating shaft 17 can prevent that the retainer 24 that rotating shaft gets loose from constituting by accepting groove on the end face that is formed at driven wheel 13 20 and being used to above it, thereby processing is simple, and the installation exercise of rotating shaft 17 is also very simple, can also suppress cost lower.
In addition, the quantity of cylinder 15 is not limited to 2.For example, when the sectional area of screw screwdriver bit is hexagon, the structure that can adopt side, every interval to engage with cylinder respectively.
Though describe the present invention in detail with reference to specific embodiment, those skilled in the art can carry out various changes, modification under the situation that does not break away from the spirit and scope of the present invention.
The Japanese patent application (Japanese Patent Application 2005-331658) of the application to propose on November 16th, 2005 is in this reference and quote its content.
Industrial applicibility
The present invention can be used in the bolt beating machine, can be used in the rotary power transmission mechanism that the rotation that will utilize the driven wheel that compressed air is rotated after hitting when being screwed into passes to the screw screwdriver bit especially.
Claims (3)
1. bolt beating machine, it comprises:
Hit piston, can be housed in sliding freely along the vertical direction and hit in the cylinder;
Driven wheel is configured in described strike lower part of piston;
The screw screwdriver bit combines with described strike piston, and can be vertically chimeric with the through hole of described driven wheel central authorities movably;
Rotation is transmitted and is used cylinder, is configured in the inboard of the through hole of described driven wheel, and engages with at least 2 sides of described screw screwdriver bit respectively; With
The bearing portion of the rotating shaft of each cylinder is formed on the inboard of the tooth portion of described driven wheel periphery,
Described bearing portion comprises accepting groove, and described accepting groove is located on the axial side end face of rotation of described driven wheel, and described rotating shaft and described cylinder are accommodated in rotation freely;
Have in the upper fixed of described accepting groove to prevent the get loose discoideus retainer of usefulness of rotating shaft,
Described retainer have be used to push described rotating shaft by paw.
2. bolt beating machine as claimed in claim 1, wherein,
Described screw screwdriver bit has polygonal section;
Make and hit the axial action of piston along the screw screwdriver bit by supplying to the compressed air that hits cylinder, described screw screwdriver bit is fought each other and is hit and it is squeezed into ormal weight be driven into part into screw;
As drive source described screw screwdriver bit is rotated with described driven wheel described compressed air, described thus drivescrew is screwed into and is driven in the part.
3. bolt beating machine as claimed in claim 1, wherein, the height of described driven wheel and cylinder is roughly the same.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP331658/2005 | 2005-11-16 | ||
| JP2005331658A JP2007136584A (en) | 2005-11-16 | 2005-11-16 | Rotation power transmission mechanism in screw driving machine |
| PCT/JP2006/322588 WO2007058150A1 (en) | 2005-11-16 | 2006-11-13 | Screw striking machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101309778A CN101309778A (en) | 2008-11-19 |
| CN101309778B true CN101309778B (en) | 2011-11-16 |
Family
ID=38048536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006800429909A Active CN101309778B (en) | 2005-11-16 | 2006-11-13 | Screw striking machine |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2007136584A (en) |
| CN (1) | CN101309778B (en) |
| WO (1) | WO2007058150A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5047737B2 (en) * | 2007-08-31 | 2012-10-10 | 株式会社マキタ | Screw driving machine |
| JP6260944B2 (en) | 2014-05-30 | 2018-01-17 | 日立工機株式会社 | Driving machine |
| JP2016043445A (en) * | 2014-08-22 | 2016-04-04 | 日立工機株式会社 | Driver |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS486442U (en) * | 1971-06-07 | 1973-01-24 | ||
| JPS58113626A (en) * | 1981-12-26 | 1983-07-06 | Nobuyuki Tsuboi | Linear bearing |
| JP3520442B2 (en) * | 1998-08-19 | 2004-04-19 | マックス株式会社 | Propulsion mechanism of driver bit in screw driving machine |
-
2005
- 2005-11-16 JP JP2005331658A patent/JP2007136584A/en active Pending
-
2006
- 2006-11-13 WO PCT/JP2006/322588 patent/WO2007058150A1/en active Application Filing
- 2006-11-13 CN CN2006800429909A patent/CN101309778B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| WO2007058150A1 (en) | 2007-05-24 |
| CN101309778A (en) | 2008-11-19 |
| JP2007136584A (en) | 2007-06-07 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |