CN203092499U - Hammering block and hammering set comprising same - Google Patents
Hammering block and hammering set comprising same Download PDFInfo
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- CN203092499U CN203092499U CN 201320071434 CN201320071434U CN203092499U CN 203092499 U CN203092499 U CN 203092499U CN 201320071434 CN201320071434 CN 201320071434 CN 201320071434 U CN201320071434 U CN 201320071434U CN 203092499 U CN203092499 U CN 203092499U
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Abstract
The utility model provides a hammering block and a hammering set comprising the hammering block. The hammering block is arranged in the hammering set, and the hammering set is provided with a rotation portion and a mandrel, wherein the rotation portion defines a containing space and forms a concave portion, the mandrel is inserted in the containing space, the hammering block can be arranged on the rotation portion in a swing mode and is located in the containing space, a first protrusion and a second protrusion are arranged at two sides, far away from each other, of the hammering block respectively, the hammering block can swing around the first protrusion, and the second protrusion is at least partially contained in the concave portion and can move relative to the concave portion. By means of the hammering set, vibration can be reduced, and structural strength and torsion are improved. The transmission efficiency of the hammering set is improved, the service life of the hammering set is prolonged, and crushed parts can be prevented from being shot out and injuring persons.
Description
Technical field
The utility model relates to the hammering structure of rotary impact tool.
Background technology
Known rotary impact tool is to utilize air motor to drive the hammering group to rotate mostly, have in the hammering group and can produce bump and the mechanism that impacts strength, for example beat piece and impact frame etc., and then the rotary power that can have impact effect, for example TaiWan, China M379496, M399005, M396741, the U.S. 7,510 by the front end output of hammering group, 023 and 7, person described in the patent cases such as 147,063 promptly belongs to this type of instrument.
In above-mentioned instrument, be to be inserted in the both sides of beating piece in the hammering group, when the hammering piece can be swung, limit the hunting range of beating piece again, and can effectively control the action of beating piece with two latches, and obtain to utilize hammering piece bump axle, produce the result of use of impacting strength.
For above-mentioned this type of instrument, there is TaiWan, China M412846 patent that another kind of percussion mechanism is provided in addition, its latch only fastens in a wherein side of beating piece, opposite side then utilizes the teat that is shaped in peripheral impact frame to be fastened, can reduce the degree of depth of impacting the required boring of frame, thereby reduce technical threshold and the cost of producing.
Yet, the problem that the described percussion mechanism of TaiWan, China M412846 patent still has other to be difficult for overcoming on producing.Impact frame wherein need mold teat, and teat is to be arranged in the impact space of impacting the frame inboard, is subjected to impacting stopping of other positions of frame, and the problem that is difficult for processing and manufacturing is arranged; Moreover owing to be to fasten the hammering piece to be directly molded on the teat that impacts frame, the mounting direction of beating piece will directly be limited in the position of teat, make former and later two beat piece and all must assemble according to fixed-direction, can't assemble in the other direction, and more not easy-to-assemble problem is arranged; And teat is shaped in to impact and sets up meter, its teat still belongs to the function of single latch, in other words, be mounted on the hammering piece and the teat that impact in the frame and still belong to two combined members, naturally can produce " assembly clearance ", so can increase the vibration of beating piece and then reduce air tool transmission efficiency and beat shortcoming such as piece (or teat) service life.
As shown in Figure 1, US7,510,023 disclose a kind of hammering group of aforesaid rotary impact tool.At US7, in 510,023, two latches 33 are located in this hammering frame 31 and each are beaten piece 32, and 32B is pivoted to this hammering frame 31.This output shaft 40 is located in this hammering frame 31 and respectively beats piece 32, the assembly hole 321 of 32B, and 321B, this output shaft 40 is extended by the through hole 313 of this hammering frame 31.
Yet, US7, it is to be solved that 510, the 023 hammering groups that disclose still have many problems to have.Because of reaching, each latch 33 respectively beats piece 32,32B is different component (that is each latch 33 is beaten piece 32 with each, 32B is non-one-body molded), respective pins 33 and hammering piece 32, can form the gap between 32B, beat piece 32 for this group, the fit structure intensity of 32B and this group of latch 33 is relatively poor, beat piece 32 for this group, the vibrations of 32B and these latches 33 and abrasion problem are comparatively serious, and impulsive torque and transmission efficiency are relatively poor, and will reduce service life that should the hammering group.Moreover, beat frame 31 because of this and be open kenel, if there is broken segment to produce (for example long-time the use down, this output shaft 40 or this group are beaten piece 32, and fragmentation takes place 32B), may penetrates and injure the operator.
Shown in Fig. 2 and 3, US7,147,063 disclose a kind of hammering group of aforesaid rotary impact tool.At US7, in 147,063, two latches 43 are located in this hammering frame 44 and each are beaten piece 30 and are pivoted to this hammering frame 44.This rotary shaft body 21 is located in this hammering frame 44 and respectively beats the assembly hole 45 of piece 30, and this rotary shaft body 21 is extended by the through hole of this hammering frame 44.
Yet, US7, it is to be solved that 147, the 063 hammering groups that disclose still have many problems to have.Because of each latch 43 and respectively beat piece 30 for different component (that is, each latch 43 is non-one-body molded with each hammering piece 30), respective pins 43 and 30 of pieces of hammering can form the gap, these fit structure intensity of beating piece 30 and these latches 43 are relatively poor, these vibrations and abrasion problems of beating piece 30 and these latches 43 are comparatively serious, impulsive torque and transmission efficiency are relatively poor, and will reduce service life that should the hammering group.Moreover, beat frame 44 because of this and be open kenel, if there is broken segment to produce (for example long-time the use down, this rotary shaft body 21 or this group are beaten piece 30 and taken place broken), may penetrates and injure the operator.
The utility model content
The purpose of this utility model is to provide a kind of hammering group of beating piece and comprising this hammering piece, can reduce vibrations at least, hoisting mechanism intensity and moment of torsion, and increase the transmission efficiency and the service life of this hammering group.
Another purpose of the present utility model is to provide a kind of hammering group of beating piece and comprising this hammering piece, and it can prevent that broken segment from penetrating.
For achieving the above object, the utility model is by the following technical solutions:
A kind of hammering piece, for being arranged in the hammering group of percussive pneumatic tool, this hammering group comprises a rotation section and an axle, and structure is enclosed in this rotation section to be had an accommodation space and is formed with a recess, and this axle is inserted in this accommodation space;
Described hammering piece comprises a transmission ring, one first protrusion and one second protrudes, this transmission ring has an inner peripheral surface and an outer peripheral face, this inner peripheral surface encloses structure a perforation, define an axial direction with this perforation, this first protrude and this second protrude one-body molded and extend from this outer peripheral face respectively and protrude with this transmission ring, this second protrude with this first protrude be positioned at this hammering piece away from both sides, this first protrusion is parallel to this axial direction;
This hammering piece first protrudes and to be arranged at this rotation section swingably by this, and this hammerings piece is placed in this accommodation space and can first protrudes and swing around this, and this second is protruding to small part and is located in this recess and can be with respect to this recess activity;
This perforation is a non-circular hole, and this perforation wears for this axle, can intermittently clash into this axle when this hammering piece is rotated.
Preferably, described first protrude from length on this axial direction greater than the length of this transmission ring on this axial direction.
For achieving the above object, the utility model provides a kind of hammering group, comprises at least one aforesaid hammering piece, also comprises:
One rotation section, enclosing structure has an accommodation space and is formed with a recess, this hammering piece is located at this rotation section swingably and is located in this accommodation space, makes this hammering piece first protrude swing around this, and this second is protruding to small part and is located in this recess and can be with respect to this recess activity;
One axle is located at this rotation section rotationally and is inserted in this accommodation space, and this axle is arranged in the perforation of this hammering piece.
Described rotation section comprises a toroidal shell body and a sidewall, this sidewall generally vertically is bonded to this toroidal shell body, this sidewall comprises that one has the joint portion of a centre bore, the inner peripheral surface of this joint portion is formed with one first integrated structure, this first integrated structure confession combines the shape complementarity of this first integrated structure and this second integrated structure with second integrated structure of a rotating shaft of a rotor.
Described first integrated structure comprises most grooves, and this majority groove axially is formed at interval the inner peripheral surface of this joint portion, and this second integrated structure comprises most axial tooth portion.
For achieving the above object, the utility model also provides another kind of hammering to organize a kind of hammering group, comprises at least one aforesaid hammering piece, also comprises:
One rotation section, enclosing structure has an accommodation space and is formed with a recess, this hammering piece is located at this rotation section swingably and is located in this accommodation space, makes this hammering piece first protrude swing around this, and this second is protruding to small part and is located in this recess and can be with respect to this recess activity;
One axle is located at this rotation section rotationally and is inserted in this accommodation space, and this axle is arranged in the perforation of this hammering piece.
Described rotation section comprises a toroidal shell body and a sidewall, this sidewall generally vertically is bonded to this toroidal shell body, this sidewall comprises that one has the joint portion of a centre bore, the inner peripheral surface of this joint portion is formed with one first integrated structure, this first integrated structure confession combines the shape complementarity of this first integrated structure and this second integrated structure with second integrated structure of a rotating shaft of a rotor.
Described first integrated structure comprises most grooves, and this majority groove axially is formed at interval the inner peripheral surface of this joint portion, and this second integrated structure comprises most axial tooth portion.
The utility model beneficial effect is: because of this transmission ring and this first protrude be one-body molded and the two between do not form the gap, vibrations and abrasion problem are improved, mechanism's intensity of this hammering piece can promote, when rotating, this rotation section can directly be passed to kinetic energy this transmission ring, therefore can increase the transmission efficiency and the service life of this hammering group, and the kinetic energy transmission between the parts will can not wasted more.
Moreover, because of this transmission ring and this first protrudes is one-body molded, the size that this hammering piece can be formed with bigger perforation and this axle and this protuberance can correspondingly increase, so this axle can have the impulse radius of this hammering piece of bigger impact, and moment of torsion and the therefore lifting effectively of rotation outputting power.
In addition, because of the rotation section of this hammering group is the sealing kenel, can prevent broken segment (for example this axle and this hammerings piece produce the broken segment) ejaculation this rotation section in, so can avoid operating personnel injured because of use for a long time.
Description of drawings
Fig. 1 is US7, the exploded view of 510, the 023 power tool hammering groups that disclosed.
Fig. 2 and Fig. 3 are US7, the schematic diagram of 147,063 power tools that disclosed.
Fig. 4 is the air tool three-dimensional exploded view of the utility model.
Fig. 4 A is the stereogram of the utility model hammering group.
Fig. 5 is the stereogram of the utility model first embodiment.
Fig. 6 is the cutaway view of the utility model first embodiment.
Fig. 7 is the three-dimensional exploded view of the utility model first embodiment.
Fig. 8 is the stereogram that the utility model first embodiment beats piece.
Fig. 9 is the plane that the utility model first embodiment beats piece.
Figure 10 is the stereogram of the utility model second embodiment hammering group.
Figure 11 is the cutaway view of the utility model second embodiment.
Figure 12 is the three-dimensional exploded view of the utility model second embodiment.
Figure 12 A is the stereogram of the utility model Figure 12.
Figure 13 and 14 is schematic diagrames that the utility model second embodiment beats piece.
Drawing reference numeral: 1: hammering group; 1 ': the hammering group; 11: beat piece; 11 ': beat piece; 111: transmission ring; 111 ': transmission ring; 112: the first protrusions; 113: perforation; 113 ': perforation; 114: bank portion; Protrude at 114 ': the second; 121: body; 121 ': body; 122: lid; 123: barricade; 124: groove; 21: rotary shaft body; 30: beat piece; 31: beat frame; 313: through hole; 32,32B: beat piece; 321,321B: assembly hole; 124 ': recess; 125: fastener; 126: axis hole; 127: the toroidal shell body; 128: sidewall; 129: the joint portion; 130: the first integrated structures; 13: latch; 14: axle; 14 ': axle; 141: working head; 142: protuberance; 2: pneumatic tool; 20: rotor; 201: rotating shaft; 202: the second integrated structures; 33: latch; 40: output shaft; 43: latch; 44: beat frame; 45: assembly hole.
The specific embodiment
Below only the enforcement aspect that the utility model is possible is described, yet is not category in order to the desire protection of restriction the utility model institute with embodiment, give earlier chat bright.
Please refer to Fig. 4 and Fig. 5, the utility model provides a kind of hammering group 1, can be subjected to this pneumatic tool 2 to drive and rotate, and can further outwards export the rotary power with impact effect for being installed in pneumatic tool 2 or the similar instrument that rotary power can be provided.
Please refer to Fig. 5 to Fig. 7, this hammering group 1 includes two and beats pieces 11, one group of rotation section, two latches 13 and an axle 14.
Please refer to Fig. 7 to Figure 10, above-mentioned hammering piece 11 includes a transmission ring 111 and one first and protrudes 112, this transmission ring 111 has an inner peripheral surface and an outer peripheral face, this inner peripheral surface encloses structure a perforation 113, this perforation 113 is a non-circular hole, define an axial direction with this perforation 113, this outer peripheral face is formed with for example limiting structure of a bank portion 114.This first protrusion 112 extends protrusion from this outer peripheral face, make this first protrusion 112 be shaped to one with this transmission ring 111, that is this first protrudes 112 solid memders that are formed in one with this transmission ring 111, this first protrude 112 with this bank portion 114 be positioned at this hammering piece 11 away from both sides, this first protrusion 112 is parallel to the axial direction that is defined by perforation 113, the preferably, first protrude 112 in the length on the axial direction greater than the length of transmission ring 111 on axial direction, can make first to protrude 112 and protrude from transmission ring 111 both side surface.
Please refer to Fig. 5 to Fig. 7 again, structure is enclosed in this rotation section an accommodation space, in more detail, this rotation section comprises a body 121 and a lid 122, this body 121 generally is tubular and goes out accommodation space in wherein enclosing structure, these body 121 inboard two symmetrical groups barricade 123 and position grooves 124 in the middle of barricade that also can form, can be for the opening of two hammering pieces 11 via tubular body 121 is placed in the accommodation space, be adjacent to be arranged in the accommodation space, and beat first of pieces with two and protrude 112 and be resisted against respectively in the groove 124 of both sides, two hammering pieces 11 can be swung around first protrusion 112 separately, wherein, two beat piece 11 answers setting opposite each other, that is, wherein first protrusion 112 of beating piece is resisted against a wherein groove 124, another first 112 of protrusion of beating piece is resisted against another groove 124, in the utility model preferred embodiment, protrude from transmission ring 111 both sides because first protrudes 112, beat first of pieces with two in the time of can avoiding assembling and protrude 112 and be resisted against in the same groove 124, and make respectively that first protrusion 112 of this hammering piece is located in the bank portion 114 of adjacent hammering piece partly; This lid 122 is that lid is entire in this body 121, and be butted on lid 122 with a fastener 125 button, avoid lid 122 and hammering piece 11 outwards to drop, this lid 122 is with body 121 and be formed with corresponding axis hole 126, in addition, this lid 122 also can cooperate the shape of body barricade 123, and local or be located in the accommodation space fully.
Above-mentioned latch 13 is to arrange in pairs or groups in twos with hammering piece 11, being arranged at corresponding first of the piece of beating protrudes in 112 groove opposite 124, in other words, as shown in Figure 6, first protrusion 112 of beating piece is resisted against a wherein groove 124, corresponding 13 of latches are resisted against another groove 124, latch 13 is placed in the accommodation space, each latch 13 is placed in the bank portion 114 of beating piece and is resisted against beats piece 11, the bank portion 114 of beating piece is greater than latch 13, and when beating piece 11 swings bank portion 114 moved relative to latch 13.
These axle 14 1 ends are formed with a working head 141, the other end is to be located at the rotation section rotationally and to be located in the accommodation space, be arranged in the axis hole 126 of rotation section, this axle 14 also is arranged in the perforation 113 that each beats piece, furtherly, the part that this axle 14 is arranged in each perforation 113 is formed with the protuberance 142 of corresponding perforation 113 shapes, can when rotating, piece 11 make hammering piece 11 intermittently clash into axle 14 in beating, the drive axle is rotated, because beating piece 11 is two rightabout settings, axle 14 is formed with two rightabout protuberances 142 too.
Utilize said apparatus, as shown in Figure 4, the utility model can drive and rotate for air tool rotor 20 for being assembled in pneumatic tool 2 or the similar tool.Shown in Fig. 4 A, in the present embodiment, the body 121 of this rotation section comprises a toroidal shell body 127 and a sidewall 128, this sidewall 128 generally vertically is connected in this toroidal shell body 127, this sidewall 128 comprises that one has the joint portion 129 of a centre bore, the inner peripheral surface of this joint portion 129 is formed with one first integrated structure 130, and this first integrated structure 130 is for combining the shape complementarity of this first integrated structure 130 and this second integrated structure 202 with one second integrated structure 202 of these rotor 20 rotating shafts 201.Say that in more detail this first integrated structure 130 comprises most grooves that axially alternately are formed at these joint portion 129 inner peripheral surfaces, this second integrated structure 202 comprises most axial tooth portion; Yet the structure of this first integrated structure 130 and this second integrated structure 202 is not as limit, and it can change design according to need and in addition.This rotation section is connected this rotor 20 by this first integrated structure 130 with the combination of this second integrated structure 202, and so this rotation section can be driven by this rotor 20.
Utilize hammering piece 11 intermittently to clash into axle 14 when rotating, the rotary power that makes axle can further utilize working head output to have impact effect for user's branch sleeve or other workpiece, in order to assembling or dismounting screw tightening, or drives other workpiece rotations.
To sum up, because of this transmission ring 111 and this first protrude 112 be one-body molded and the two between do not form the gap, vibrations and abrasion problem are improved, mechanism's intensity of this hammering piece 11 can promote, when rotating, this rotation section can directly be passed to kinetic energy this transmission ring 111, therefore can increase the transmission efficiency and the service life of this hammering group 1, and the kinetic energy transmission between the parts will can not wasted more.
Moreover, because of this transmission ring 111 and this first protrudes 112 is one-body molded, the size that this hammering piece 11 can be formed with bigger perforation 113 and this axle 14 and this protuberance 142 can correspondingly increase, so this axle 14 can have the impulse radius of this hammering piece 11 of bigger impact, and moment of torsion and the therefore lifting effectively of rotation outputting power.
In addition, because of the rotation section of this hammering group 1 is the sealing kenel, can prevent broken segment (for example this axle 14 and this hammerings piece 11 produce the broken segment) ejaculation this rotation section in, so can avoid operating personnel injured because of use for a long time.
In addition, when the sidewall of this bank portion 114 was resisted against this latch 13, this hammering piece 11 was limited to and is not impacted this body 121, so can avoid this hammering piece 11 and this body 121 damaged and can avoid waste in the kinetic energy transmittance process.
Hold above-mentioned, rotation section in the utility model has the body 121 of tubular, and can further form symmetrical groove 124 and barricade 123 in the rotation section, has better simply structure complexity, be easy to make, simultaneously, have first for 11 of the hammering pieces of assembling and protrude 112, the time need not consider to beat the mounting direction of piece in assembling, be easy to the characteristics of assembling and have.And when piece 11 was beaten in second of assembling, first of evagination protrudes 112 can prevent that beating piece 11 for two is assembled as equidirectional, has the function of use that prevents assembly defect.
In addition, be formed as one owing to beat first protrusion 112 of piece in the utility model with transmission ring 111, make and beat the wherein thickness increase of a side of piece 11, under the situation that structural strength allows, inner peripheral surface and perforation 113 can be enlarged towards a side of first protrusion 112, and the material and the weight of cutting down hammering piece 11, at this moment, because it is a side that is positioned near axle 14 that the hammering piece is cut down the part of material, rotary inertia influence to hammering group integral body is little, and can under minimum degree influences the situation of impulsive force, alleviate the weight of hammering group, and has splendid result of use.
Secondly, after the perforation 113 in the transmission ring 111 enlarged, the size of axle 14 and protuberance 142 thereof also can correspondingly increase, and can improve the impulse radius when beating piece 11 with axle 14 bumps, improved transmission efficiency, and can effectively increase the output of rotary power.
Moreover, because the weight of hammering group reduces, also can increase material in other positions of hammering group, make the material that increases part be positioned at the position of hammering group periphery away from axle, and can under the situation of same weight, improve the rotary inertia of hammering group, and then increase the output of rotary power.
In addition, owing to beat and promptly have first protrusion in the piece, beating piece can directly be arranged in the rotation section, can remove the gap between the transmission ring and first protrusion, and then reduce vibrations and abrasion between each part, kinetic energy can be directly delivered to the hammering piece when rotation section is rotated, reduce the power consume of transmitting between part and the part, and then can improve transmission efficiency and service life.
Sum up above embodiment, the utility model provides a kind of hammering group, have the characteristics of making, assembling of being easy to, can prevent the generation of wrong assembling situation, simultaneously can reduce vibrations at least again, hoisting mechanism intensity and moment of torsion, and increase the transmission efficiency and the service life of this hammering group, and can prevent that broken segment from penetrating and injuring personnel, reality is the proof that has progressive effect.
Be noted that the rotation section of hammering group 1 ' has a body 121 ' in second embodiment shown in Figure 10 to 14, this body 121 ' comprises that one is formed at the recess 124 ' of inner face.Two beat piece 11 ' is located in this body 121 ', and each is beaten piece 11 ' and comprises that one second protrudes 114 '.This second protrude 114 ' certainly this hammering piece 11 ' outer surface protrude out integratedly, this second protrusion 114 ' is located in this recess 124 ' and can be with respect to this recess 124 ' activity to small part movably.In the present embodiment, first protrude (protruding) and this second as first among first embodiment protrude 114 ' one-body molded and extend from this transmission ring 111 ' outer peripheral face respectively and protrude with this transmission ring 111 ', this second protrude 114 ' with this first protrusion be positioned at this hammering piece 11 ' away from both sides.Because of this second protrusion 114 ' is one-body molded with this hammering piece 11 ', this hammering piece 11 ' can be formed with bigger perforation 113 ', the size of this axle 14 ' can correspondingly increase, so this axle 14 ' can have the impulse radius of this hammering piece 11 ' of bigger impact, and moment of torsion and the therefore lifting effectively of rotation outputting power; In addition, vibrations and abrasion problem are improved, and mechanism's intensity of this hammering piece 11 ' can promote, and the transmission efficiency of this hammering group 1 ' and service life increase, and the kinetic energy transmission between the parts will more can not wasted.
In sum, on overall construction design of the present utility model, practicality and the benefit, really be that to meet on the industry development fully required, and the structure utility model that is disclosed also is to have unprecedented innovation structure, so it has " novelty " and should not have doubt, the utility model can have more the enhancement of effect than known structure again, therefore also has " progressive ".
Claims (8)
1. beat piece for one kind, for being arranged in the hammering group of percussive pneumatic tool, this hammering group comprises a rotation section and an axle, and structure is enclosed in this rotation section to be had an accommodation space and be formed with a recess, and this axle is inserted in this accommodation space;
It is characterized in that:
Described hammering piece comprises a transmission ring, one first protrusion and one second protrudes, this transmission ring has an inner peripheral surface and an outer peripheral face, this inner peripheral surface encloses structure a perforation, define an axial direction with this perforation, this first protrude and this second protrude one-body molded and extend from this outer peripheral face respectively and protrude with this transmission ring, this second protrude with this first protrude be positioned at this hammering piece away from both sides, this first protrusion is parallel to this axial direction;
This hammering piece first protrudes and to be arranged at this rotation section swingably by this, and this hammerings piece is placed in this accommodation space and can first protrudes and swing around this, and this second is protruding to small part and is located in this recess and can be with respect to this recess activity;
This perforation is a non-circular hole, and this perforation wears for this axle, can intermittently clash into this axle when this hammering piece is rotated.
2. hammering piece according to claim 1 is characterized in that, described first protrudes from length on this axial direction greater than the length of this transmission ring on this axial direction.
3. a hammering group is characterized in that, comprises at least one hammering piece as claimed in claim 1, also comprises:
One rotation section, enclosing structure has an accommodation space and is formed with a recess, this hammering piece is located at this rotation section swingably and is located in this accommodation space, makes this hammering piece first protrude swing around this, and this second is protruding to small part and is located in this recess and can be with respect to this recess activity;
One axle is located at this rotation section rotationally and is inserted in this accommodation space, and this axle is arranged in the perforation of this hammering piece.
4. hammering group according to claim 3, it is characterized in that, described rotation section comprises a toroidal shell body and a sidewall, this sidewall generally vertically is bonded to this toroidal shell body, this sidewall comprises that one has the joint portion of a centre bore, the inner peripheral surface of this joint portion is formed with one first integrated structure, and this first integrated structure confession combines the shape complementarity of this first integrated structure and this second integrated structure with second integrated structure of a rotating shaft of a rotor.
5. hammering group according to claim 4 is characterized in that, described first integrated structure comprises most grooves, and this majority groove axially is formed at interval the inner peripheral surface of this joint portion, and this second integrated structure comprises most axial tooth portion.
6. a hammering group is characterized in that, comprises at least one hammering piece as claimed in claim 2, also comprises:
One rotation section, enclosing structure has an accommodation space and is formed with a recess, this hammering piece is located at this rotation section swingably and is located in this accommodation space, makes this hammering piece first protrude swing around this, and this second is protruding to small part and is located in this recess and can be with respect to this recess activity;
One axle is located at this rotation section rotationally and is inserted in this accommodation space, and this axle is arranged in the perforation of this hammering piece.
7. hammering group according to claim 6, it is characterized in that, described rotation section comprises a toroidal shell body and a sidewall, this sidewall generally vertically is bonded to this toroidal shell body, this sidewall comprises that one has the joint portion of a centre bore, the inner peripheral surface of this joint portion is formed with one first integrated structure, and this first integrated structure confession combines the shape complementarity of this first integrated structure and this second integrated structure with second integrated structure of a rotating shaft of a rotor.
8. hammering group according to claim 7 is characterized in that, described first integrated structure comprises most grooves, and this majority groove axially is formed at interval the inner peripheral surface of this joint portion, and this second integrated structure comprises most axial tooth portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320071434 CN203092499U (en) | 2013-02-07 | 2013-02-07 | Hammering block and hammering set comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320071434 CN203092499U (en) | 2013-02-07 | 2013-02-07 | Hammering block and hammering set comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203092499U true CN203092499U (en) | 2013-07-31 |
Family
ID=48843941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320071434 Expired - Fee Related CN203092499U (en) | 2013-02-07 | 2013-02-07 | Hammering block and hammering set comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203092499U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105773533A (en) * | 2014-12-24 | 2016-07-20 | 张玮庭 | Fixed type structure of rotor and hammering set shell base of pneumatic tool |
-
2013
- 2013-02-07 CN CN 201320071434 patent/CN203092499U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105773533A (en) * | 2014-12-24 | 2016-07-20 | 张玮庭 | Fixed type structure of rotor and hammering set shell base of pneumatic tool |
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