CN2491186Y

CN2491186Y - Ratchet handle of pneumatic spanner

Info

Publication number: CN2491186Y
Application number: CN 01228510
Authority: CN
Inventors: 廖其琛
Original assignee: MAOJIE INDUSTRIAL CO Ltd
Current assignee: MAOJIE INDUSTRIAL CO Ltd
Priority date: 2001-07-25
Filing date: 2001-07-25
Publication date: 2002-05-15
Anticipated expiration: 2011-07-25

Abstract

The utility model relates to a ratchet handle of pneumatic spanner, wherein a ratchet handle is provided with two alternately arranged side frames; an upper through hole and a lower through hole are respectively arranged on two side frames; a driving seat and a throw part are arranged between two side frames; two ends of the driving seat are respectively perforated in the upper through hole and the lower through hole; an upper binding part and a lower binding part arranged at two ends of the driving seat are respectively arranged outside two side frames; the outer circumference of the upper binding part and the circumference of lower binding part are greater than the upper through hole and the lower through hole. In assembling process, the outer lateral margins of the side frames are limited by utilizing the upper and the lower binding parts, so as to make the outer flanks of the side frames of the ratchet handle under limit action. Thereby the utility model cannot be deformed under overgreat torsion action, so as to reduce damage probability and prolong life-span.

Description

The pneumatic impact spanner ratchet lever

Technical field

The utility model relates to a kind of pneumatic impact spanner ratchet lever.

Background technology

Be to screw or release bolt in the middle of various hand-held tool with spanner, and the pattern of spanner is divided into manually, electronic or pneumatic several kenels, the design of pneumatic impact spanner is in order to produce the action of continuous rotation, with fast quick-detach or screw nut, bolt, and the pattern of existing pneumatic impact spanner is as Fig. 4, shown in 5, a wherein end of spanner is provided with the handle of establishing by gas that air compressor is sent in order to connect 50, be assembled with each device that drives in order to supplied gas in the handle 50, the other end of handle 50 is then assembled the body 60 of a hollow, body 60 is away from handle 50 described ends and be integrally formed with a ratchet lever 61, be provided with a profile groove 610 in the middle of the described ratchet lever 61, to form two side frames 611, other is provided with one, and axially to penetrate body 60 inner and stretch into the axle 62 of handle 50, axle 62 is positioned at ratchet lever 61 described ends and extends axially an eccentric shaft 621, to drive a drive block 63 rotations, and then be equipped in a pulling piece 64 peripheries by described drive block 63, and described pulling piece 64 inside have the continuous dentation of annular, enclose in the continuous dentation of annular and to have placed one in the scope of establishing and drive seat 65, the described periphery that drives seat 65 is provided with a sour jujube piece 651 so as to being meshed with the continuous dentation of pulling piece 64, be respectively equipped with in order to control the direction button 652 that sour jujube piece 651 turns in the two ends that drive seat 65 in addition, sleeve column 653 in order to the socket sleeve, two side frames 611 of ratchet lever 61 then are respectively equipped with for the direction button 652 that drives seat 65, the little perforation 612 that sleeve column 653 places, large perforation 613, the inner edge stage casing of large perforation 613 also radially is concaved with a groove 614, buckle for a clasp 66 and establishes and place restrictions on and drive 65 and deviate from by large perforation 613 described ends.

During use, push the shift bar 51 of handle 50 tops, air can be imported by air compressor, impel axle shown in Figure 4 62 to rotate again, and then drive block 63 is rotated continuously, driving pulling piece 64 reciprocal beats, and then make and drive seat 65 and produce rotation continuously, to unscrew or to screw tight work such as nut fast.

(electric wrench is as the same in above-mentioned ratchet lever design for existing pneumatic impact spanner, only be the device difference of handle inside), yet, the shortcoming of undercapacity when its design but can cause processing and operation, because ratchet lever 61 is to drive seat 65 by 611 assemblings of two side frames, pulling piece 64 members such as grade, and place restrictions on its each member and in certain scope, operate, yet, because the length of two side frames 611 is longer, and two side frames 611 are to bear the torsion part, its outside lacks other again and places restrictions on structure, when directly working as manual wrench with pneumatic impact spanner, the operator uses, perhaps automatic when reversing handle 50 in pneumatic process, all can make two side frames 611 bear excessive torsion and be out of shape, perhaps produce slight crack A as illustrated in fig. 6 and can not use.

The design of the ratchet lever of above-mentioned existing pneumatic impact spanner has undercapacity and the shortcoming of fracture easily, and this shortcoming also is effectively to improve by sick the failing of domestic and international market institute dirt for a long time always, and reality has in addition necessity.

Summary of the invention

In order to overcome above-mentioned shortcoming, main purpose of the present utility model is to provide a kind of pneumatic impact spanner ratchet lever, and it has higher intensity and can prevent distortion.

Based on above-mentioned purpose, pneumatic impact spanner ratchet lever of the present utility model, it comprises two side frames that are set in distance, be respectively equipped with the coaxial perforation of going up on two side frames, following perforation, clipping one has the pulling piece of the continuous dentation of annular setting between two side frames, other establishes a driving seat that passes the annular dentation of the perforation of side frame and pulling piece simultaneously, a described wherein end that drives seat axially is equipped with so as to passing down the sleeve column of perforation, be characterized in: described driving seat is not established the described end of sleeve column for wearing end, the external diameter that wears end forms a shoulder less than driving seat, wear end and sleeve column and be placed through upward boring a hole of ratchet lever two side frames respectively, following perforation, in addition by the above conjunction of two side frames outside difference, following conjunction is assembled in and wears end, on the sleeve column, described on, following conjunction has outer peripheral edges greater than last, the retaining edge of following punch inside diameter.

Advantage of the present utility model is: because design of the present utility model is to make two side frames of the ratchet lever outside be subjected to placing restrictions on effect, when Gu Dangqi is subjected to twisting force, also be unlikely distortion and fracture, so can improve its intensity, increase the service life.

Understand the purpose of this utility model, characteristics and advantage for clearer, further specify the utility model below in conjunction with accompanying drawing.

Description of drawings

Fig. 1 is a ratchet lever outward appearance decomposing schematic representation of the present utility model.

Fig. 2 is a ratchet lever of the present utility model plane combination schematic diagram.

Fig. 3 is a ratchet lever of the present utility model plane combination generalized section.

Fig. 4 is the schematic appearance of existing pneumatic impact spanner.

Fig. 5 is the ratchet lever decomposing schematic representation of existing pneumatic impact spanner.

Schematic appearance when Fig. 6 produces slight crack for the ratchet lever that has pneumatic impact spanner now.

The specific embodiment

See also shown in Fig. 1～3, the utility model comprises a ratchet lever 10, be assembled in ratchet lever 10 wherein an end driving seat 20, pulling piece 100 and be assembled in the following conjunction 30 that drives seat 20 two ends, go up conjunction 40, wherein, ratchet lever 10 still has two side frames that are set in distance 11, be provided with going up perforation 12, boring a hole 13 down of concentric in two side frames 11, bore a hole on 13 the internal perisporium stage casing down and be concaved with caulking groove 131, last perforation 12 then is concaved with a recessed edge 121 towards driving seat 20 described ends;

Described driving seat 20 peripheries are provided with sour jujube piece 21, the upper and lower side that drives seat 20 then extends axially one respectively and wears end 23, one sleeve column 22 in order to sheathed sleeve, bore a hole 12 to be placed through going up of ratchet lever 10 respectively, under bore a hole 13, the described external diameter of end 23 that wears is less than driving seat 20, make it and drive and form a shoulder 25 between the seat 20, be provided with internal thread 231 in wearing end 23 inside peripheral wall in addition, and the center is provided with a perforation 200, penetrate in the perforation 200 after passing a spring 203 for the braking axostylus axostyle 202 of a control knob 201, fasten a steel ball 204 that is embedded at sleeve column 22 perisporiums, and because described control knob 201, spring 203, steel ball 204 members such as grade are intrinsic designs of general spanner, so do not repeat, be provided with external screw thread 24 in the sleeve column 22 contiguous seat 20 described end peripheries that drive in addition, so as to the conjunction 30 that is spirally connected down, and be interval with by the steel ball 26 of spring 261 outside ejections in driving seat 20 bottom surfaces

Described down conjunction 30 is to be made as the retaining edge of outer peripheral edges diameter greater than 13 internal diameters of boring a hole down, and conjunction 30 is provided with one and penetrates down 13 the flange 31 of boring a hole towards driving seat 20 described ends down, and runs through in the center and to be provided with the screw 32 of being located at external screw thread 24 so as to spiral shell;

In addition establish a following sheet 28 that compresses that is sheathed on the sleeve column 22, be located in the caulking groove 131 of 10 times perforation 13 of ratchet lever with a cramp 27 buttons in addition,, make down to compress sheet 28 and push against in the steel ball 26 that drives 20 bottom surface by the setting of cramp 27 in driving seat 20 belows;

And the described conjunction 40 of going up is a hollow plate body, and it be the retaining edge of outer peripheral edges diameter greater than last perforation 12 internal diameters, and it is provided with one and is located in order to spiral shell and wears the threaded portion 41 of holding 23 internal threads 231 towards driving seat 20 described ends;

Other establishes a clipping and compress sheet 29 between the recessed edge 121 of shoulder 25 that drives seat 20 and last perforation 12.

Above-mentioned is composition member of the present utility model, again by shown in Fig. 2,3 as can be known, after assembling, be in side frame 11 both sides by clipping about descending conjunction 30 and going up conjunction 40 formed retaining edge, when side frame 11 is subjected to torsion, two side frames 11 can be subjected to placing restrictions on of upper and lower conjunction 40,39 and be unlikely distortion, and reach the setting that compresses sheet 29 by compressing sheet 28 down, and driving seat 20 is positioned between two side frames 11 really.

Claims

1. pneumatic impact spanner ratchet lever, it comprises two side frames that are set in distance, being respectively equipped with coaxial going up on two side frames bores a hole, bores a hole down, clipping one has the pulling piece of the continuous dentation of annular setting between two side frames, other establishes a driving seat that passes the annular dentation of the perforation of side frame and pulling piece simultaneously, a described wherein end that drives seat axially is equipped with so as to passing down the sleeve column of perforation, it is characterized in that:

Described driving seat is not established the described end of sleeve column for wearing end, the external diameter that wears end forms a shoulder less than driving seat, wear end and sleeve column and be placed through the upward perforation of ratchet lever two side frames, following perforation respectively, be assembled in and worn on end, the sleeve column by the above respectively conjunction in the two side frames outside, following conjunction in addition, described upper and lower conjunction has the retaining edge of outer peripheral edges greater than upper and lower punch inside diameter.

2. pneumatic impact spanner ratchet lever according to claim 1 is characterized in that:

The sleeve column that drives seat is provided with external screw thread, and following conjunction centre then is provided with and the external screw thread screw established of spiral shell mutually.

3. pneumatic impact spanner ratchet lever according to claim 1 is characterized in that:

The end that wears that drives seat has internal thread, and last conjunction then is equipped with the threaded portion that spiral shell is located at described internal thread relatively.

4. pneumatic impact spanner ratchet lever according to claim 1 is characterized in that:

Drive seat and on the described end face of sleeve column, be equipped with, on the following perforation internal perisporium of side frame, be embedded a cramp in addition by the steel ball of spring ejection, and between cramp and the driving seat and be provided with one and be based in the following sheet that compresses that the steel ball contact that drives a bottom surface is lived.

5. according to claim 1 or 4 described pneumatic impact spanner ratchet levers, it is characterized in that:

Described go up perforation towards drive the described end of seat be concaved with one with the corresponding recessed edge of shoulder that drives seat, other establishes a clipping and compress sheet between recessed edge and the shoulder.

6. pneumatic impact spanner ratchet lever according to claim 2 is characterized in that:

A described wherein end face of conjunction down is equipped with the flange in the following perforation that is placed through side frame.