CN208729708U - A kind of piston pin anti-channeling structure of electric hammer - Google Patents
A kind of piston pin anti-channeling structure of electric hammer Download PDFInfo
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- CN208729708U CN208729708U CN201821232055.5U CN201821232055U CN208729708U CN 208729708 U CN208729708 U CN 208729708U CN 201821232055 U CN201821232055 U CN 201821232055U CN 208729708 U CN208729708 U CN 208729708U
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- connecting rod
- pin hole
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Abstract
The utility model relates to a kind of piston pin anti-channeling structures of electric hammer, including piston, connecting rod and piston pin, piston is fabricated from a flexible material, connecting rod cavity and the first pin hole are equipped in piston, first pin hole runs through connecting rod cavity, the inner cylinder of first pin hole is equipped with positioning protrusion, connecting rod is equipped with the second pin hole, one end that connecting rod is equipped with the second pin hole is plugged in connecting rod cavity, second pin hole and the first pin hole face, piston pin is equipped with positioning groove, and in the first pin hole and the second pin hole, positioning protrusion is caught in positioning groove gudgeon pin plug.The piston pin anti-channeling structure of such electric hammer, when connecting rod is using the elastic deformabilities such as aluminium weak material, the axially position of piston pin still may be implemented, avoid piston pin that play occurs and rubs with cylinder inner wall, while guaranteeing connecting rod strength, production cost is reduced.
Description
Technical field
The utility model relates to piston, the piston pin anti-channeling structure of especially a kind of electric hammer.
Background technique
Electric hammer is a kind of common electric tool, and with the development of Power Tools Industries, the requirement to its function is higher and higher.
Electric hammer principle is transmission mechanism while driving drill bit to make rotating motion, and there are one directions perpendicular to rotary head
Reciprocating hammer movement.Electric hammer is the air pressure in cylinder by transmission mechanism band piston reciprocating air in a cylinder
Mechanical periodicity drives the hammer in cylinder back and forth to hit the top of brick, seems that we tap brick, therefore named electric hammer with hammer.
The piston structure of general electric hammer, including piston, connecting rod and piston pin, piston are equipped with connecting rod cavity and pin
Hole, one end of connecting rod is plugged in connecting rod cavity, while pin hole also is provided on connecting rod, and piston pin passes through the pin of piston and connecting rod
Hole connects the two.And piston pin occurs play and rubs with cylinder inner wall in order to prevent, causes piston pin gentle
Cylinder is worn, and general way is a circle protrusion to be arranged in the pin hole of nylon connecting rod, while in piston using nylon connecting rod
One circle groove of setting on pin, when piston pin is packed into pin hole, the protrusion of piston pin extrusion nylon connecting rod brings it about deformation, piston pin
It can smoothly be packed into, when protrusion is caught in groove, realize the axially position of piston pin, play can not occur for piston pin.
However, the manufacturing cost of nylon connecting rod is higher, intensity is difficult to ensure.Therefore product also connects using aluminium on the market
Bar.But the elastic deformability of aluminum component is weak, if when using above-mentioned piston pin axial positioning structure, piston pin will be unable to be packed into pin
Hole, therefore piston pin axial positioning structure is not often designed when use aluminum connecting rod, and this results in piston pin that play may occur
And rub with cylinder inner wall, contradiction is very prominent.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of piston pin anti-channeling structures of electric hammer, and connecting rod is using aluminium etc.
When the weak material of elastic deformability, the axially position of piston pin still may be implemented, avoid piston pin occur play and with gas
The inside wall of cylinder rubs, and while guaranteeing connecting rod strength, reduces production cost.
In order to solve the above-mentioned technical problem, the technical scheme that the utility model is provided is as follows:
A kind of piston pin anti-channeling structure of electric hammer, including piston, connecting rod and piston pin, piston are fabricated from a flexible material,
Connecting rod cavity and the first pin hole are equipped in piston, the first pin hole runs through connecting rod cavity, and it is fixed that the inner cylinder of the first pin hole is equipped with
Position protrusion, connecting rod are equipped with the second pin hole, and one end that connecting rod is equipped with the second pin hole is plugged in connecting rod cavity, the second pin hole and the
One pin hole face, piston pin are equipped with positioning groove, and gudgeon pin plug is in the first pin hole and the second pin hole, convex card lifting
Enter in positioning groove.
Positioning protrusion using such structure, after piston pin pin plug is in the first pin hole and the second pin hole, on piston
It is formed and is cooperated with the positioning groove on piston pin, axial restraint is formd to piston pin, it is not necessary to reuse the strong Buddhist nun of deformability
Imperial piston.
Further, the first pin hole is divided into two concentric holes by connecting rod cavity, is equipped with convex in two concentric holes
It rises.Double positioning protrusion, which are arranged, preferably to be positioned piston pin.
Further, the junction of the first pin hole Yu connecting rod cavity is arranged in positioning protrusion.By positioning protrusion setting even
Place is met, piston pin positioning protrusion when being packed into the first pin hole is more easier to deform, and reduces the installation difficulty of piston pin.
Further, piston is nylon piston.Nylon material wearability is good, and cost of material is low.
Further, connecting rod is aluminum connecting rod.Aluminum component manufacturing process is mature, and workpiece strength is easily guaranteed that.
Further, as an implementation, positioning protrusion is annular protrusion, and positioning groove is annular groove.With annular
The piston injection molding manufacture difficulty of protrusion is low, correspondingly processes annular groove on piston pin and is also relatively easy to, good manufacturability is conducive to control
Production cost processed.
Further, as another embodiment, positioning protrusion is discrete salient point, and positioning groove is dotted pit.
Using such structure, positioning protrusion is more easier that deformation occurs, convenient for the installation of piston pin.
Further, anti-skid chequer is equipped in the first pin hole.The setting of anti-skid chequer can increase the friction of piston and piston pin
Coefficient further prevents piston pin that play occurs.
Further, the cylinder annular knurl of piston pin.Piston and piston pin can equally be increased in piston pin surface knurling
Coefficient of friction is to prevent piston pin from play occurs.
In conclusion the piston pin anti-channeling structure of such electric hammer, connecting rod is using weak materials of elastic deformabilities such as aluminium
When, the axially position of piston pin still may be implemented, avoid piston pin that play occurs and rubs with cylinder inner wall, guarantee to connect
While bar intensity, production cost is reduced.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the piston pin anti-channeling structure of the present embodiment electric hammer；
Fig. 2 is the partial enlarged view of A in Fig. 1；
Wherein, piston -1, connecting rod cavity -11, positioning protrusion -12, connecting rod -2, piston pin -3, positioning groove -31.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
A kind of piston pin anti-channeling structure of electric hammer as depicted in figs. 1 and 2, including piston 1, connecting rod 2 and piston pin 3,
Piston 1 is fabricated from a flexible material, and connecting rod cavity 11 and the first pin hole are equipped in piston 1, and the first pin hole runs through connecting rod cavity 11,
The inner cylinder of first pin hole is equipped with positioning protrusion 12, and connecting rod 2 is equipped with the second pin hole, and connecting rod 2 is equipped with one end of the second pin hole
It is plugged in connecting rod cavity 11, the second pin hole and the first pin hole face, piston pin 3 is equipped with positioning groove 31, the plug dress of piston pin 3
In the first pin hole and the second pin hole, positioning protrusion 12 is caught in positioning groove 31.
Using such structure, after the pin plug of piston pin 3 is in the first pin hole and the second pin hole, the convex on piston 1
It plays 12 and is formed with the positioning groove 31 on piston pin 3 and cooperated, axial restraint is formd to piston pin 3, it is not necessary to reuse deformation energy
The strong nylon piston of power.
Further, the first pin hole is divided into two concentric holes by connecting rod cavity 11, is equipped with positioning in two concentric holes
Protrusion 12.Double positioning protrusion 12, which are arranged, preferably to be positioned piston pin 3.
Preferably, the junction of the first pin hole Yu connecting rod cavity 11 is arranged in positioning protrusion 12.Positioning protrusion 12 is set
It sets in junction, the positioning protrusion 12 when being packed into the first pin hole of piston pin 3 is more easier to deform, and reduces piston pin 3
Installation difficulty.
In the present embodiment, piston 1 is nylon piston, and connecting rod 2 is aluminum connecting rod.Nylon material wearability is good, and cost of material is low.
And aluminum component manufacturing process is mature, workpiece strength is easily guaranteed that.
As an implementation, positioning protrusion 12 is annular protrusion, and positioning groove 31 is annular groove.With annular protrusion
The injection molding of piston 1 manufacture difficulty is low, correspondingly processes annular groove on piston pin 3 and is also relatively easy to, and good manufacturability is conducive to control life
Produce cost.
As another embodiment, positioning protrusion 12 is discrete salient point, and positioning groove 31 is dotted pit.Using this
The structure of sample, positioning protrusion 12 are more easier that deformation occurs, convenient for the installation of piston pin 3.
Meanwhile first can be equipped with anti-skid chequer in pin hole.The setting of anti-skid chequer can increase the friction of piston 1 Yu piston pin 3
Coefficient further prevents piston pin 3 that play occurs.Likewise, annular knurl processing can be carried out in the cylinder of piston pin 3.In piston
3 surface knurling of pin can equally increase the coefficient of friction of piston 1 and piston pin 3 to prevent piston pin 3 from play occurs.
In conclusion the piston pin anti-channeling structure of such electric hammer, connecting rod 2 is using weak materials of elastic deformabilities such as aluminium
When, the axially position of piston pin 3 still may be implemented, avoid piston pin 3 that play occurs and rubs with cylinder inner wall, guarantee
While 2 intensity of connecting rod, production cost is reduced.
In short, the above is only the preferred embodiment of the utility model only, it is not intended to limit the utility model, it is all
Any modifications, equivalent replacements, and improvements made within spirit of the present utility model and principle etc. should be included in practical
Within novel protection scope.
Claims (9)
1. a kind of piston pin anti-channeling structure of electric hammer, it is characterised in that: including piston, connecting rod and piston pin, the piston by
Flexible material is made, and connecting rod cavity and the first pin hole is equipped in the piston, first pin hole runs through connecting rod cavity, described
The inner cylinder of first pin hole is equipped with positioning protrusion, and the connecting rod is equipped with the second pin hole, and the connecting rod is equipped with the second pin hole
One end is plugged in connecting rod cavity, second pin hole and the first pin hole face, and the piston pin is equipped with positioning groove, described
In the first pin hole and the second pin hole, the positioning protrusion is caught in positioning groove gudgeon pin plug.
2. the piston pin anti-channeling structure of electric hammer described in accordance with the claim 1, it is characterised in that: the connecting rod cavity is sold first
Hole is divided into two concentric holes, is equipped with positioning protrusion in described two concentric holes.
3. the piston pin anti-channeling structure of electric hammer described in accordance with the claim 1, it is characterised in that: positioning protrusion setting is the
The junction of one pin hole and connecting rod cavity.
4. the piston pin anti-channeling structure of electric hammer described in accordance with the claim 1, it is characterised in that: the piston is nylon piston.
5. the piston pin anti-channeling structure of electric hammer described in accordance with the claim 1, it is characterised in that: the connecting rod is aluminum connecting rod.
6. according to the piston pin anti-channeling structure of electric hammer described in claim 1-5 any one, it is characterised in that: the convex
Rising is annular protrusion, and the positioning groove is annular groove.
7. according to the piston pin anti-channeling structure of electric hammer described in claim 1-5 any one, it is characterised in that: the convex
Rising is discrete salient point, and the positioning groove is dotted pit.
8. the piston pin anti-channeling structure of electric hammer described in accordance with the claim 1, it is characterised in that: be equipped in first pin hole anti-
Sliding line.
9. the piston pin anti-channeling structure of electric hammer described in accordance with the claim 1, it is characterised in that: the cylinder of the piston pin rolls
Flower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821232055.5U CN208729708U (en) | 2018-08-01 | 2018-08-01 | A kind of piston pin anti-channeling structure of electric hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821232055.5U CN208729708U (en) | 2018-08-01 | 2018-08-01 | A kind of piston pin anti-channeling structure of electric hammer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208729708U true CN208729708U (en) | 2019-04-12 |
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ID=66028047
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821232055.5U Active CN208729708U (en) | 2018-08-01 | 2018-08-01 | A kind of piston pin anti-channeling structure of electric hammer |
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| CN (1) | CN208729708U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI729865B (en) * | 2020-06-22 | 2021-06-01 | 唐州工業股份有限公司 | Hammer tool |
-
2018
- 2018-08-01 CN CN201821232055.5U patent/CN208729708U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI729865B (en) * | 2020-06-22 | 2021-06-01 | 唐州工業股份有限公司 | Hammer tool |
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| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 321201 Wangyuan Industrial Zone, Quanxi Town, Wuyi County, Jinhua City, Zhejiang Province Patentee after: Gorgeous Electrical Appliance Manufacturing Co., Ltd. Address before: 321201 Wangyuan Industrial Zone, Quanxi Town, Wuyi County, Jinhua City, Zhejiang Province Patentee before: WUYI HUALI ELECTRIC APPLIANCES MANUFACTURING CO., LTD. |