CN202622743U

CN202622743U - Impact frame of pneumatic tool

Info

Publication number: CN202622743U
Application number: CN 201120553148
Authority: CN
Inventors: 林震阳
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-12-27
Filing date: 2011-12-27
Publication date: 2012-12-26
Anticipated expiration: 2021-12-27

Abstract

An impact frame of a pneumatic tool comprises a first frame wall, a second frame wall spaced from the first frame wall, a first connecting wall used for connection the first frame wall and the second frame wall and provided with a connecting portion and a rotation limiting projection, wherein the swing limiting projection protrudes from the connecting portion in an integrated manner; a second connecting wall used for connecting the first frame wall and the second frame wall, defining an impact space together with the first frame wall, the second frame wall and the first connecting wall, wherein the swing limiting projection of the first connecting wall protrudes towards the impact space; and a pin hole positioned in a side opposed to the first connecting wall, and passing through the first frame wall and extending in the direction of the second connecting wall. The impact frame of the pneumatic tool is not only easy in manufacture, but also low in manufacture cost, and can improve the processing precision due to a shallow drilling depth.

Description

A kind of air tool impact frame

Technical field

The utility model relates to a kind of pneumatic tool.

Background technology

Consult Fig. 1,2; Existing air tool percussion mechanism 1 is by one of 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 company's wall 112 between this wall 111; And one connect the impact space 113 between the wall 112 between this wall 111 and this; In said wall 111 one of them have one supply this impact bar 14 to penetrate perforation 114; 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.

Present impact frame 11 again and also comprise two pin-and-holes 10 that run through this wall 111 and one of them connecting wall 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.The existing frame 11 that impacts is in order to make this pin-and-hole 10, and when casting formed this pedestal 19, the base of said pedestal 19 connected the diameter of the thickness of wall 192 greater than the pin-and-hole 10 that is about to 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 that this base connects wall 192 and the width that enlarges this impact space 113 with cutting technology mill afterwards; 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 processing and cutting adding man-hour.

The impact frame 11 of existing percussion mechanism 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 pin-and-hole 10, form blind hole 194 with deep hole machining then after, cut out the open bore portion 102 of pin-and-hole 10 again with the cutting technology mill; Its reason is: in the impact space 113 of this impact frame 11 this impact block 12 need be set; So the impact space 13 of this impact frame 11 approximately is the twice of impact block 12 thickness, promptly the degree of depth of this pin-and-hole 10 is the summation of this wall 111 and this impact block 12 thickness, adds the essential deep hole machining of using in man-hour; If but the drill bit that deep hole machining is used is when the process of being drilled with runs into different resistances; Be easy to generate skew and machining accuracy variation or the like problem,, need on the pedestal 19 that casting forms, reserve thickness earlier so existing impact frame 11 during fabrication; Make the solid excessively base of brill that drill bit can be average connect wall 192 and pedestal wall 191; To form this blind hole 194, should connect wall thickness excision unnecessary on the wall 192 by base with cut again, to form the open bore portion 102 of this pin-and-hole 10.Aforementioned because the procedure of processing that the 11 structure restrictions of impact frame are produced not only bothers, the bit wear rate is high, manufacturing cost is high, and 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.

The utility model content

The utility model technical problem to be solved is to overcome the above-mentioned deficiency of prior art and a kind of air tool percussion mechanism is provided, and makes that it is easy to manufacture, low cost of manufacture and have preferable machining accuracy.

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

A kind of air tool impact frame comprises: one first wall; One second wall is with this first wall interval; One first connects wall, connect this first wall and this second wall, and have a junction, and a limit of giving prominence to from this connecting portion one is changeed teat; One second connects wall, connects this first wall and this second wall, and connects wall with this first wall, this second wall and this first and define an impact space jointly, this first connect wall limit pendulum teat be to give prominence to toward this impacts space; And a pin-and-hole, the position first connects the opposition side of wall at this, and passes first wall and second connect the wall direction and extend toward this.

Compared with prior art; The advantage of the utility model is: through connect integrated limit pendulum teat on the wall at first of this impact frame; Simultaneously this first connect wall the opposition side setting pass this first wall and second connect the pin-and-hole that wall extends toward this; Can utilize the boring of simple and single to machine the manufacturing of this impacts frame, so the utility model is not only easy to manufacture, low cost of manufacture, also can improve the precision of processing because drilling depth is shallow.

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 of existing percussion mechanism.

Fig. 3 is the three-dimensional exploded view that the utility model impacts frame first preferred embodiment and other member relativenesses.

Fig. 4 is the manufacturing sketch map of first preferred embodiment one.

Fig. 5 is the cutaway view of being got along Fig. 4 center line 5-5.

Fig. 6 is the cutaway view that the utility model impacts frame second preferred embodiment.

Fig. 7 is the cutaway view of being got along Fig. 6 center line 7-7.

Fig. 8 is the cutaway view that the utility model impacts frame the 3rd preferred embodiment.

Fig. 9 is the cutaway view of being got along Fig. 8 center line 9-9.

Figure 10 is the cutaway view that the utility model impacts frame the 4th preferred embodiment.

Figure 11 is the cutaway view of being got along Figure 10 center line 11-11.

The specific embodiment

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

Consult Fig. 3,4,5; First preferred embodiment system that impacts frame 2 is combined to form one of pneumatic tool percussion mechanism with an impact block 3, a latch 4 and an impact bar 5; But this impact block 3 is these latch 4 pivots of nationality to be installed in this impact frame 2 with putting; It has two parallel end faces 31, one and runs through the impact opening 32 of this end face 31, a limit pendulum groove 33 that runs through this end face 31, and a pivot pendulum groove 34 that runs through this end face 31, and this limit pendulum groove 33 and pivot are put groove 34 and be positioned at opposition side.Said impact bar 5 is to be plugged in rotationally on this impact frame 2; And comprise an impact teat 51 to impact opening 32 that should impact block 3; Because the structure of this impact bar 5 and impact block 3 and to make flowing mode irrelevant with the improved emphasis of the utility model, no longer detailed description.

The impact frame 2 of present embodiment comprises: one first wall 21, one and second wall of these first wall 21 parallel interval 22, one be connected first between this first wall 21 and second wall 22 and connect wall 23, one and be connected second between this first wall 21 and second wall 22 and connect wall 24, and one connects wall 23 and second by first wall 21, second wall 22, first and connects wall 24 and define the impact space 25 that forms.

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; First of present embodiment connects wall 23 and has a connecting portion 231 with the outside, and one is impacted 25 one outstanding limits in space by this connecting portion 231 toward these and puts teat 232.

This impact frame 2 also comprises a pin-and-hole 26 at these first company wall 23 opposition sides again; This pin-and-hole 26 has one to the first sealing of hole portion 261 that should first wall 21; And one communicate with this impact space 25 and to should second connecting the opening portion 262 of wall 24, and one to the second sealing of hole portion 263 that should second wall 22.

During assembling; This impact block 3 is placed in the impact space 25 of this impact frame 2; And this latch 4 is plugged in the pin-and-hole 26 of this impact frame 2, after plugging, 33 pairs of grooves of the limit of this impact block 3 pendulum should impact the limit pendulum teat 232 of frame 2; And 34 pairs of the pivot of this impact block 3 pendulum grooves should latch 4; 5 of said impact bars are to be inserted in the impact opening 32 of these impact blocks 3 by the perforation of this impact frame 2 211, because the structure of this impact opening 32 and impact bar 5 and to make flowing mode irrelevant with the improved 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 connects first of said first wall 21 and second wall 22 and connect wall 23, second and connect wall 24, and this first connects wall 23 and when moulding, have toward the outstanding limit of these impacts space 25 one and put teat 232; And first wall 21 also has this perforation 211, said second wall 22 have one with these perforation 211 axial corresponding clip foramen primums 201.On this pedestal 20, be processed to form this pin-and-hole 26 with drill bit afterwards, and get on the bus the system chase to form this clip hole 221, promptly accomplish the manufacturing of this impact frame 2 with this clip foramen primum 201.Though present embodiment need be drilled with this pin-and-hole 26 on this pedestal 20, because the existing person of the length of this pin-and-hole 26 is short and quantity is single, the length of the opening portion 262 of said pin-and-hole 26 is also dwindled many; So not only distance wearing and tearing short, drill bit are low adding man-hour; Also need not reprocess mill and cut this pedestal 20, the limit pendulum teat 232 that directly forms simultaneously also can omit procedure of processing, therefore; Present embodiment is somebody's turn to do and impacts frame 2 during fabrication, and is existing really quick, simple.

On the other hand, in the process of the aforementioned pin-and-hole 26 of processing, because it is drilled with the existing person's weak point of the degree of depth; Therefore boring procedure is difficult for deflection, thus can improve the precision of aforementioned pin-and-hole 26 processing, because aforementioned pin-and-hole 26 is to supply this latch 4 to plug; When it has preferable precision, also can therefore improve the running usefulness and the torsion of percussion mechanism, so the structure of this impact frame 2 of present embodiment is not only innovated; Also have easy to manufacture, cost is low, improve machining accuracy, and improves effects such as running usefulness and torsion.

Consult Fig. 6,7; The structure and first embodiment of second preferred embodiment of this novel impact frame are similar; Promptly this impact frame 2 also comprises one first wall 21, second parallel wall 22, connects said first wall 21 and second wall 22 and defines one of impact space 25 first jointly and connects wall 23, one second and connect wall 24; And pin-and-hole 26; This first connects wall 23 and also has a connecting portion 231, and one impacted 25 one outstanding limits pendulum teat 232 in space by this connecting portion 231 toward these, and pin-and-hole 26 is put teat 232 with this limit and is oppositely arranged; And have one and be arranged on the first sealing of hole portion 261 on this first wall 21, one and be arranged on the second sealing of hole portion 263 on this second wall 22; And the opening portion 262 between this first sealing of hole portion 261 and the second sealing of hole portion 263, after this latch 4 was assembled in pin-and-hole 26, latch 4 can not contact with second company's wall 24.The operation that the change of previous constructions makes boring only needs get final product at this first wall 21 and this 22 on second wall, so effect such as that present embodiment also has is easy to manufacture, cost is low.

Consult Fig. 8,9; The structure and first embodiment of the 3rd preferred embodiment of this novel impact frame are similar; Difference is: the pin-and-hole 26 of the 3rd embodiment only has the first sealing of hole portion 261 of passing this first wall 21, and an opening portion 262 that is communicated with this impact space 25.Consult Figure 10,11; The structure of the 4th preferred embodiment of this novel impact frame is also similar with the 3rd embodiment; Difference is: first wall 21 of the 4th embodiment is provided with a clip hole 212; And this second wall 22 have one with these clip hole 212 axial corresponding perforations 222, and this pin-and-hole 26 has first a sealing of hole portion 261 of passing this first wall 21, and an opening portion 262 that is communicated with this impact space 25.

The foregoing description is merely the preferred embodiment of the utility model; But do not limit the scope of this novel enforcement with this; Be that the simple equivalent that novel claim of Fan Yiben and novel description are done changes, all belong in the utility model patent scope required for protection.

Claims

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

One first wall;

One second wall is with this first wall interval;

One first connects wall, connect this first wall and this second wall, and have a junction, and a limit of giving prominence to from this connecting portion one is changeed teat;

One second connects wall, connects this first wall and this second wall, and connects wall with this first wall, this second wall and this first and define an impact space jointly, this first connect wall limit pendulum teat be to give prominence to toward this impact space;

And a pin-and-hole, the position first connects the opposition side of wall at this, and passes first wall and second connect the wall direction and extend toward this.

2. according to the said air tool impact frame of claim 1, it is characterized in that: said pin-and-hole has one to the first sealing of hole portion that should first wall, and one to should second connecting the opening portion of wall.

3. according to the said air tool impact frame of claim 2, it is characterized in that: said pin-and-hole also has a pair of second sealing of hole portion that should second wall.

4. according to the said air tool impact frame of claim 1, it is characterized in that: said first wall has a perforation, and this second wall have one with the axial corresponding clip hole of this perforation.

5. according to the said air tool impact frame of claim 2, it is characterized in that: said first wall has a clip hole, and this second wall have one with the axial corresponding perforation in this clip hole.