CN201350613Y

CN201350613Y - Striking group for pneumatic tool

Info

Publication number: CN201350613Y
Application number: CNU2009200040535U
Authority: CN
Inventors: 吴裕仁
Original assignee: YUEH-CHI ENTERRPISE Co Ltd
Current assignee: YUEH-CHI ENTERRPISE Co Ltd
Priority date: 2009-01-22
Filing date: 2009-01-22
Publication date: 2009-11-25
Anticipated expiration: 2019-01-22

Abstract

The utility model relates to a striking group for pneumatic tool, which comprises a sleeve barrel, two hammers and a drive shaft, wherein the sleeve barrel is provided with a barrel body and a close cover, the barrel body is provided with a holding space for containing the hammers, and the close cover is arranged on the barrel body to seal the holding space. The drive shaft is provided with a mandrel which is penetrated into the hammer after threading through the close cover of the sleeve barrel. The striking group of the utility model designs the sleeve barrel into two parts of the barrel body and the close cover, and therefore the sleeve barrel not only has the characteristics of excellent structural strength and simple production process, but also can effectively reduce the volume of a pneumatic tool by reducing the radius of gyration.

Description

Be used for air tool strike group

Technical field

The utility model is relevant with pneumatic tool, is meant a kind of air tool strike group that is used for especially.

Background technology

A kind of air tool strike group 10 as shown in Figure 1, it consists predominantly of a hammer seat 11, two hammers 12, two stopper pins 13 and a power transmission shaft 14.Hammer seat 11 has an accommodation space 112, and has a perforation 114 and one ratchet hole 116 that is communicated with accommodation space 112 respectively in the two sides, front and back, wherein ratchet hole 116 can be for a ratchet axle 152 engagement of drive unit 15, makes hammer seat 11 can be subjected to the drive of drive unit 15 and rotates.Each hammer 12 is located in the accommodation space 112 of hammer seat 11, and has a clip hole 122 respectively, and each stopper pin 13 is arranged in hammer seat 11, and is connected with each hammer 12 respectively, makes hammer seat 11 drive each hammer 12 by each stopper pin 13 and rotates; Power transmission shaft 14 has an axle 142, axle 142 is arranged in the clip hole 122 of each hammer 12 via the axis hole 114 of hammer seat 11, and power transmission shaft 14 is provided with two and holds the portion of hitting 144 on axle 142, can be driven and force power transmission shaft 14 rotations by each hammer 12 respectively, to reach the purpose of locking or parts such as release bolt or nut.

Yet,, be easy to produce stress and concentrate and cause structural deterioration in the position at four end angles because the shape of hammer seat 11 general rectangular frameworks makes hammer seat 11 under long-term the use.In addition, hammer seat 11 can make pneumatic tool must provide bigger space to rotate for hammer seat 11, but such design but will cause air tool volume to increase because the relation of its shape needs the bigger radius of gyration.Moreover hammer seat 11 must just can form the shape of rectangular frame through comparatively complicated program, and then will cause the raising of manufacturing cost.

Summary of the invention

At the problems referred to above, main purpose of the present utility model is to provide a kind of air tool strike group that is used for, and it has good structural strength, and is not fragile.

Of the present utility model time a purpose is to provide a kind of air tool strike group that is used for, and it can reduce applied air tool volume, or increases air tool outputting torsion.

Another purpose of the present utility model is to provide a kind of air tool strike group that is used for, and it is easy to manufacture, can reduce manufacturing cost.

For achieving the above object, a kind of air tool strike group that is used for provided by the utility model, it is characterized in that comprising: a sleeve, have a stack shell and a capping, described stack shell has a chassis, and a perisporium is extended by described chassis periphery, one accommodation space is defined by described chassis and described perisporium, and 2 first locating slot be located at described perisporium, described capping is located at the perisporium of described stack shell and is sealed described accommodation space, and described capping has an axis hole and two locating holes; Two stopper pins are located in respectively in 2 first locating slots of two locating holes of described capping and described sleeve; Two hammers pivotally are located in the described accommodation space, and each described hammer has a clip hole respectively and is positioned at its central authorities, and one second a locating slot confession wherein described stopper pin is installed with, and a chute is installed with for another described stopper pin; One power transmission shaft has the portion of hitting of holding that an axle and two is located at described axle, and described axle is arranged in the clip hole of the axis hole of described capping and described each hammer and convexedly stretches in outside the described sleeve.

In the above-mentioned the technical solution of the utility model, the perisporium outer rim of described stack shell is circular.

In the above-mentioned the technical solution of the utility model, described capping is for removably being connected with described stack shell.

In the above-mentioned the technical solution of the utility model, described capping has accommodation space and the subsides that a projection stretches into described stack shell and is butted on described perisporium.

In the above-mentioned the technical solution of the utility model, the perisporium inner edge of described stack shell has two planes and two cambered surfaces, and described 2 first locating slots lay respectively at a described plane.

In the above-mentioned the technical solution of the utility model, the chassis of described stack shell has a ratchet hole.

Adopt technique scheme, strike group of the present utility model provides a sleeve with stack shell and capping, can allow strike group of the present utility model obtain good structural strength, also not fragile and convenient manufacturing of sleeve itself; In addition, the required radius of gyration of sleeve is little, makes to use pneumatic tool volume of the present utility model and can effectively reduce.

Description of drawings

Fig. 1 is the three-dimensional exploded view of existing strike group;

Fig. 2 is the stereogram of the utility model one preferred embodiment;

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

Fig. 4 is the three-dimensional exploded view of the sleeve that provided of the utility model one preferred embodiment;

Fig. 5 is the side view cutaway drawing of the stack shell of the sleeve that provided of the utility model one preferred embodiment.

The specific embodiment

In order to describe structure of the present utility model, characteristics and effect in detail, existing following preferred embodiment of act and conjunction with figs. are described as follows.

As Fig. 2, shown in Figure 3, be used for air tool strike group 20 for what the utility model first preferred embodiment provided, it includes sleeve 30, two stopper pins, 40,42, two hammers 50,52 and a power transmission shaft 60.

As Fig. 4, shown in Figure 5, sleeve 30 has a stack shell 32 and a capping 34.Stack shell 32 has a chassis 322 and a perisporium 324, and perisporium 324 is extended by the periphery on chassis 322, makes between chassis 322 and the perisporium 324 and can define an accommodation space 36.Has a ratchet hole 33 on the chassis 322, ratchet axle (not shown) engagement for a motor (not shown), the outer rim of perisporium 324 is circular, inner edge then has two relative plane 326 cambered surfaces 328 relative with two, and stack shell 32 caves inward on each plane 326 of perisporium 324 and forms first locating slot 38 of a semicircular in shape.Capping 34 has a projection 342, and projection 342 stretches in the accommodation space 36 of stack shell 32 and pastes and is butted on perisporium 324, and capping 34 removably is a tight fit in stack shell 32, and the accommodation space 36 with stack shell 32 is sealed simultaneously.Capping 34 has an axis hole 344 that is communicated with accommodation space 36 and is communicated with each first locating slot 38 respectively with two locating holes 346.

One stopper pin 40 passes a wherein locating hole 346 of capping 34, is located in wherein one first locating slot 38 of

sleeve

30, and 42 of another stopper pins pass another locating hole 346 of capping 34, are located in another first locating slot 38 of sleeve 30.

As shown in Figure 3, each hammer 50,52 is located in the accommodation space 36 of stack shell 32, and has a clip hole 502,522, one second locating slots 504,524 respectively, and a chute 506,526.Each clip hole 502,522 is positioned at the central authorities of each hammer 50,52, and the direction in each clip hole 502,522 is just opposite.Each second locating slot 504,524 lays respectively at the end face and the bottom surface of hammer 50,52, and can supplying wherein, a

stopper pin

40,42 is installed with.506,526 bottom surface and end faces that lay respectively at hammer 50,52 of each chute can be installed with for another stopper pin 42,40.Therefore, sleeve 30 can drive each hammer 50,52 by each

stopper pin

40,42 and rotate also pivot pendulum in the accommodation space 36 of stack shell 32.

As shown in Figure 3, power transmission shaft 60 has the portion of hitting 64 of holding that an axle 62 and two is located at axle 62, the axis hole 344 that its central shaft 62 is arranged in capping 34 is with the clip hole 502,522 of each hammer 50,52 and convexedly stretch in outside the sleeve 30, make each hammer 50,52 can respectively hold the portion of hitting 64 and force power transmission shaft 60 to rotate, in order to screw or to unscrew parts such as screw, bolt or nut by pushing.

Structure of the present utility model is compared as can be known with the structure of commonly using design, the utility model adopts circular design at the perisporium of stack shell 32, can reduce the phenomenon that stress is concentrated, even sleeve 30 is not fragile through using for a long time yet, and, the process of sleeve 30 also can be come simply than the rectangle hammer seat in the existing structure, can reduce manufacturing cost.In addition, because stack shell 32 is with the relation of the cylindrical design of clad type, under identical weight, the rectangle hammer seat 11 that the volume ratio of sleeve 30 of the present utility model is commonly used structure is little, make sleeve 30 of the present utility model needed radius of gyration when rotating littler than the needed radius of gyration of rectangle hammer seat of existing structure, make application pneumatic tool of the present utility model not need the space receiving sleeve 30 that provides too big, air tool volume certainly just can be reduced effectively.Relatively, if consider in identical accommodation space, sleeve 30 more of the present utility model and existing rectangular frame hammer seat 11 are because the utility model adopts columnar sleeve 30, so the known hammer seat of its weight ratio 11 is big, can be power transmission shaft 60 bigger outputting torsion is provided.

According to creation thinking of the present utility model, structure of the present utility model can have multiple variation.For example: be not limited to adopt friction tight mode to be fixed between the stack shell of sleeve and the capping, also can use the mode of screw locking or welding, can reach the purpose of this utility model equally.

The constituent components that the utility model is disclosed in the above-described embodiments only for illustrating, can not be used for limiting scope of patent protection of the present utility model, and substituting or variation of other equivalent elements also should be contained by scope of patent protection of the present utility model.

Claims

1, a kind ofly be used for air tool strike group, it is characterized in that comprising:

One sleeve, have a stack shell and a capping, described stack shell has a chassis, one perisporium is extended by described chassis periphery, one accommodation space is defined by described chassis and described perisporium, and 2 first locating slot be located at described perisporium, described capping is located at the perisporium of described stack shell and is sealed described accommodation space, and described capping has an axis hole and two locating holes;

Two stopper pins are located in respectively in 2 first locating slots of two locating holes of described capping and described sleeve;

Two hammers pivotally are located in the described accommodation space, and each described hammer has a clip hole respectively and is positioned at its central authorities, and one second a locating slot confession wherein described stopper pin is installed with, and a chute is installed with for another described stopper pin;

One power transmission shaft has the portion of hitting of holding that an axle and two is located at described axle, and described axle is arranged in the clip hole of the axis hole of described capping and described each hammer and convexedly stretches in outside the described sleeve.

2, as claimed in claim 1ly be used for air tool strike group, it is characterized in that: the perisporium outer rim of described stack shell is for circular.

3, as claimed in claim 1ly be used for air tool strike group, it is characterized in that: described capping is for removably being connected with described stack shell.

4, as claimed in claim 1ly be used for air tool strike group, it is characterized in that: described capping has accommodation space and the subsides that a projection stretches into described stack shell and is butted on described perisporium.

5, as claimed in claim 1ly be used for air tool strike group, it is characterized in that: the perisporium inner edge of described stack shell has two planes and two cambered surfaces, and described 2 first locating slots lay respectively at a described plane.

6, as claimed in claim 1ly be used for air tool strike group, it is characterized in that: the chassis of described stack shell has a ratchet hole.