CN202225175U

CN202225175U - Impact frame and impact device of pneumatic tool

Info

Publication number: CN202225175U
Application number: CN2011202015997U
Authority: CN
Inventors: 林震阳
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-06-15
Filing date: 2011-06-15
Publication date: 2012-05-23
Anticipated expiration: 2021-06-15

Abstract

The utility model provides the impact frame of a pneumatic tool, which comprises a first frame wall, a second frame wall spaced from the first frame wall, two connecting walls used for connecting the first frame wall with the second frame wall, a first pinhole and a second pinhole. An impact space is defined by the first frame wall and the second frame wall together. Each connecting wall is provided with a connecting part and a swing limiting protuberant part protruding towards the impact space from the connection part. The swing limiting protuberant parts of the connecting walls are respectively positioned close to one of the first frame wall and the second frame wall. The first pinhole is penetrated between the first frame wall and the connecting part of one connecting wall. The second pinhole is penetrated between the second frame wall and the connecting part of the other connecting wall. The utility model also provides an impact device adopting the above impact frame. The impact frame and the impact device are easy to manufacture and low in cost. The impact device is better in running usefulness and torque force due to the higher machining precision of the impact device.

Description

Air tool impact frame and percussion mechanism thereof

Technical field

The utility model relates to a kind of air tool parts, is meant a kind of air tool percussion mechanism that receives the pneumatic tool rotor driving and can produce the impact drive actions especially, and the impact frame of this percussion mechanism.

Background technology

Like Fig. 1, shown in 2; Existing air tool percussion mechanism 1 is by not shown rotor driven; And drive a tool spindle (figure does not show) rotation workmanship; Said percussion mechanism 1 comprises: but one impact frame 11, two impact blocks 12, two isometric and this impact block 12 is erected at the latch 13 on this impact frame 11 with pivot pendulum mode, and impact bar 14 that receives one of them impact in this impact block 12 and can just change and reverse.This impact frame 11 comprises that the parallel frame wall in two left and right sides 111, two are connected the connection ancient piece of jade, round, flat and with a hole in its centre 112 between this wall 111; And impact space 113 between this wall 111 and this connecting wall 112; In the said ledge 111 one of them has the perforation 114 that this impact bar 14 of confession penetrates; Another wall 111 has a clip hole 115 that supplies rotor (figure does not show) engaging ground to plug, but and this impact block 12 to be pivots be installed in this impact space 113 with putting.

Existing again impact frame 11 also comprises two pin-and-holes 10 that run through this wall 111 and one of them connection ancient piece of jade, round, flat and with a hole in its centre ground 112; Each pin-and-hole 10 all has two respectively to blind hole portion 101 that should frame wall 111, and the open bore portion 102 to should connecting wall 112 and communicating with this impact space 113.

Existing impact frame 11 during fabrication; Pedestal 19 of casting at first; This pedestal 19 has two pedestal walls 191; And two bases that are connected between this pedestal wall 191 connect wall 192, and one of them in this pedestal wall 191 has this perforation 114, and another pedestal wall 191 has a clip foramen primum 193.Existing impact frame 11 is in order pin-and-hole 10 such as to make, and when casting formed this pedestal 19, the thickness of the base of said pedestal 19 company wall 192 was greater than the diameter that is the pin-and-hole 10 of moulding.Form two with deep hole machining afterwards and run through this pedestal wall 191 and the basic blind hole 194 that connects wall 192; Cut this base with the cutting technology mill afterwards and connect wall 192; To enlarge the width in this impact space 113; Run through with blind hole 194 when this impact space 113, and at these clip foramen primum 193 place's car system chases when forming this clip hole 115, promptly accomplish the processing of this impact frame 11.Therefore, the impact frame 11 of existing percussion mechanism 1 need pass through steps such as casting, deep hole machining and cutting adding man-hour.

The impact frame 11 of known percussive device 1 is adding man-hour, must on pedestal 19, form earlier this thickness and connect wall 192 greater than the base in the aperture of this pin-and-hole 10, form blind hole 194 with deep hole machining then after; Be to cut the reason that pin technology mill cuts out the open bore portion 102 of pin-and-hole 10: the pin-and-hole 10 of this impact frame 11 is to run through whole frame body and have the bigger degree of depth again; Therefore, adding the essential deep hole machining of using in man-hour, if but the drill bit that deep hole machining is used when the process of being drilled with runs into different resistances; Be easy to generate the problem of skew and machining accuracy variation or the like; So existing impact frame 11 is during fabrication, need on the pedestal 19 that casting forms, to reserve thickness earlier, make the solid excessively base of brill that drill bit can be average connect wall 192 and pedestal wall 191; Should connect wall thickness excision unnecessary on the wall 192 by base with cut again; Forming the open bore portion 102 of this pin-and-hole 10, so the procedure of processing that the impact frame 11 of existing structure is produced by its structure restriction not only bothers, and the bit wear rate is high, manufacturing cost is high; When carrying out deep hole machining, also be easy to generate the relatively poor problem of precision, influence the running usefulness and the torsion of percussion mechanism 1 virtually.

Summary of the invention

The utility model technical problem to be solved be overcome the above-mentioned deficiency of prior art and provide a kind of easy to manufacture, cost is low, and can improve the air tool impact frame of machining accuracy and the percussion mechanism that uses this impact frame.

The utility model solves the problems of the technologies described above the technical scheme that is adopted:

A kind of impact frame of air tool percussion mechanism comprises:

One first wall;

One second wall is with this first wall interval;

Two connecting walls; Connect this first wall and this second wall; And and this first wall and this second wall define jointly one impact prominent between; Each connecting wall all has a junction, and a limit pendulum teat of giving prominence to toward this impact space from this connecting portion, and the limit pendulum teat of this connecting wall is respectively adjacent to one of them of this first wall and this second wall;

One first pin-and-hole is located between the connecting portion of this first wall and one of them connecting wall; And

One second pin-and-hole is located between the connecting portion of this second wall and another connecting wall.

Use the air tool percussion mechanism of above-mentioned impact frame to comprise: but one impact frame, two impact blocks are installed in the latch in one of this impacts frame impact space with pivot pendulum mode, and one receive this impact block one of them stir and the impact bar that rotates; This impact frame also comprises first wall of one first wall, and this, second wall at interval, and two connecting walls that connect this first wall and second wall and define this impact space jointly; This Lian Bidou has a junction; And limit pendulum teat of giving prominence to toward this impact space from this connecting portion; The limit of said connecting wall pendulum teat also is respectively adjacent to one of them of this first wall and this second wall; This impact frame comprises that also one is located in first pin-and-hole between the connecting portion of this first wall and one of them connecting wall again, and second pin-and-hole that is located between the connecting portion of this second wall and another connecting wall.

The utility model is through one-body molded limit pendulum teat on the connecting wall that impacts frame at this; Can shorten the degree of depth that this first and second pin-and-hole is drilled with; Because the improvement of this structure not only can reduce the wear intensity of drill bit; Also can exempt the manufacturing step that grinds connecting wall after the boring again; And because drilling depth foreshortens to original half and also machining accuracy can be provided further, so the percussion mechanism of the utility model is not only easy to manufacture, cost is low, percussion mechanism can also have preferable running usefulness and torsion because of the raising of machining accuracy.

Description of drawings

Fig. 1 is the three-dimensional exploded view of existing percussion mechanism.

Fig. 2 is the manufacturing sketch map of the impact frame in this existing percussion mechanism.

Fig. 3 is the three-dimensional exploded view of the utility model embodiment.

Fig. 4 is the assembled sectional view of percussion mechanism among Fig. 3.

Fig. 5 the utility model embodiment impacts the manufacture process sketch map of frame.

The specific embodiment

Embodiment further describes the utility model below in conjunction with accompanying drawing.

Consult Fig. 3,4,5; The preferred embodiment of the utility model percussion mechanism comprises: one impacts frame 2, two impact blocks 3, in this impact block 3 one of them is erected at one first latch 4, one second latch 5 on this impact frame 2, and one of them impact that receives this impact block 3 and the impact bar 6 of forward or reverse.

Above-mentioned impact frame 2 comprises: one first wall 21, one with second wall of these first wall 21 parallel interval 22, two connecting walls 23 that are connected this first wall 21 and second wall 22, and one defined the impact space 24 that forms by first wall 21, second wall 22 and connecting wall 23.This first wall 21 has the perforation 211 of a circle; And this second wall 22 have one with these perforation 211 axial corresponding clip holes 221; This connecting wall 23 all has a connecting portion 231; And one impacted the outstanding limits pendulum teats 232 in spaces 24 by this connecting portion 231 toward these, the length of this limit pendulum teat 232 approximately be this impacts space 24 highly 1/2nd, and said limit is put teat 232 and is respectively adjacent to this first wall 21 or this second wall 22.

Above-mentioned impact frame 2 also comprises one of them first pin-and-hole 25 that is located in this first wall 21 and this connecting wall 23; And second pin-and-hole 26 that wears 23 of this second ledge 22 and another connecting walls; This first pin-and-hole 25 has one to the first sealing of hole portion 251 that should first wall 21; And one communicate with this impact space 24 and to one of them first opening portion 252 that should connecting portion 231; And this second pin-and-hole 26 has one to the second sealing of hole portion 261 that should second wall 22, and one communicates with this impact space 24 and to another second opening portion 262 that should connecting portion 231.

But above-mentioned impact block 3 is pivots to be installed in the impact space 24 of this impact frame 2 with putting; Each impact block 3 all comprise the end face 31 of two parallel and first wall 21 and second wall 22, impact opening that runs through this end face 31 32, one run through this end face 31 and to should impact frame 2 should limit pendulum teat 232 one of them limit pendulum groove 33, and the pivot of one of them towards this first opening portion 252 of this impact frame 2 and in second opening portion 262 is put groove 34.

Above-mentioned first latch 4 is to be plugged in first pin-and-hole 25 of this impact frame 2; The body of rod of part and to first opening portion 252 that should first pin-and-hole 25; Impacting space 24 toward this simultaneously gives prominence to and the pivot pendulum groove 34 of corresponding one of them impact block 3; Said second latch 5 is to be plugged in second pin-and-hole 26 of this impact frame 2, and the body of rod of part also is to give prominence to and the pivot pendulum groove 34 of corresponding another impact block 3 toward this impact space 24, but the length of this second latch 5 is greater than this first latch 25; And has a jag 51 that protrudes in this second pin-and-hole 26; Promptly the jag 51 of this second latch 5 is concordant with the wall 222 of second wall 22 that this impacts frame 2 haply, and one of contiguous this pneumatic tool air cylinder device 7 prevents that by this this second latch 5 from moving axially.

The impact bar 6 of present embodiment is to be plugged in rotationally on this impact frame 2; And comprise two respectively to the impact teat 61 of impact opening 32 that should impact block 3; Because the structure of this impact opening 32 and impact bar 6 and to make flowing mode irrelevant with the improvement emphasis of the utility model, no longer detailed description.

The impact frame 2 of present embodiment during fabrication; At first casting forms a pedestal 20; This pedestal 20 has first wall 21 and second wall 22 of parallel interval, and the connecting wall 23 that connects said first and

second wall

21,22, and each connecting wall 23 all has one toward interior outstanding limit pendulum teat 232; Wherein first wall 21 also has this perforation 211, and this second wall 22 have one with these perforation 211 axial corresponding clip foramen primums 201.On this pedestal 20, be processed to form first pin-and-hole 25 and this second pin-and-hole 26 with drill bit afterwards, get on the bus the system chase to form this blocking hole 221 in this clip foramen primum 201 again, promptly accomplish the manufacturing of this impact frame 2.What further specify is; Though present embodiment need be drilled with this first pin-and-hole 25 and second pin-and-hole 26 on this pedestal 20; But because the length of this this first and second pin-and-

hole

25,26 has only the half the of prior art, therefore, not only distance wearing and tearing short, drill bit were low in 25,26 o'clock at aforementioned first and second pin-and-hole of processing; Need not reprocess mill yet and cut this pedestal 20, so the impact frame of the utility model during fabrication really than prior art fast, simply.

On the other hand, in the process of aforementioned first and second pin-and-

hole

25,26 of processing,, it has only the half the of prior art because being drilled with the degree of depth; Therefore boring procedure is difficult for deflection; And can improve the precision of aforementioned first and second pin-and-

hole

25,26 processing, because aforementioned first and second pin-and-hole the 25, the 26th supplies this first and

second latch

4,5 to plug, when it has preferable precision; Also can therefore improve the running usefulness and the torsion of whole percussion mechanism; So the percussion mechanism of the utility model is structure innovation not only, also have easy to manufacture, cost is low, improve machining accuracy, and improves effects such as running usefulness and torsion.

Claims

1. air tool impact frame is characterized in that: comprising:

One first wall;

One second wall is with this first wall interval;

2. air tool impact frame as claimed in claim 1; It is characterized in that: described first pin-and-hole has a pair of first sealing of hole portion that should first wall; And first opening portion of the connecting portion of one of them connecting wall of correspondence; And this second pin-and-hole has a pair of second sealing of hole portion that should first wall, and second opening portion of the connecting portion of another connecting wall of correspondence.

3. air tool impact frame as claimed in claim 1 is characterized in that: described first wall has a perforation, and this second wall have one with the axial corresponding clip hole of this perforation.

4. air tool percussion mechanism is characterized in that: comprise:

One impacts frame; Comprise first wall of one first wall, and this, second wall, two connecting walls that are connected this first wall and this second wall at interval; And one defined the impact space that forms by first wall, second wall, second wall and connecting wall; Each connecting wall all has a junction; And this connecting portion impacts the outstanding limit pendulum teat in space toward this; The limit of above-mentioned connecting wall pendulum teat is respectively adjacent to one of them of this first wall and this second wall, and this impact frame comprises that also one is darted at first pin-and-hole of the connecting portion of this first wall and one of them connecting wall again, and one be located in the connecting portion of this second wall and another connecting wall second pin-and-hole;

Two impact blocks are installed in the impact space of this impact frame;

One first latch is plugged in first pin-and-hole of this impact frame;

One second latch is plugged in second pin-and-hole of this impact frame; And

One impact bar, one of them that receives this impact block stirred rotation.

5. air tool percussion mechanism as claimed in claim 4 is characterized in that: the length of described first latch is shorter than the length of second latch.

6. air tool percussion mechanism as claimed in claim 4; It is characterized in that: described first pin-and-hole has a pair of first sealing of hole portion that should first wall; And first opening portion of the connecting portion of one of them connecting wall of correspondence; And this second pin-and-hole has a pair of second sealing of hole portion that should first wall, and second opening portion of the connecting portion of another connecting wall of correspondence.

7. air tool percussion mechanism as claimed in claim 6; It is characterized in that: said impact block all has impact opening, one that two end faces, one run through this end face and runs through one of them the pivot pendulum groove in this end face and corresponding first and second latch; And one run through this end face and to one of them limit pendulum groove of this limit pendulum teat that should impact frame; First of this impact frame wall has a perforation that supplies said impact bar to penetrate again; And this second wall have one with the axial corresponding clip hole of this perforation, said impact bar has two impact teats of one of them impact opening of correspondence respectively.