CN208729711U - A kind of electric hammer piston - Google Patents
A kind of electric hammer piston Download PDFInfo
- Publication number
- CN208729711U CN208729711U CN201821229939.5U CN201821229939U CN208729711U CN 208729711 U CN208729711 U CN 208729711U CN 201821229939 U CN201821229939 U CN 201821229939U CN 208729711 U CN208729711 U CN 208729711U
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- Prior art keywords
- electric hammer
- connecting pin
- oil storage
- protrusion
- hammer piston
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Abstract
The utility model relates to a kind of electric hammer pistons, including connecting pin and acting end, acting end is cylindrical, connecting pin is in cydariform, connecting pin is provided with the connecting rod cavity of cydariform, the outerplanar of connecting pin is equipped with bolt through-hole, latch projection and oil storage protrusion, and around being arranged around bolt through-hole, oil storage protrusion surrounds and forms the first shoe cream room latch projection.Such electric hammer piston, lubricant grease can be stored in the first shoe cream room, while the outerplanar of connecting pin and latch projection and oil storage protrusion can also form the cavity of storage lubricant grease, ensure that the good lubrication of piston and cylinder.Such electric hammer piston, the lubricating status between piston and cylinder is good, and piston is not susceptible to wear with cylinder, and part durability is good, can effectively extend the working time of electric hammer.
Description
Technical field
The utility model relates to piston, especially a kind of electric hammer piston.
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 by transmission mechanism band piston reciprocating air, cylinder air pressure 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.
For piston as the important part for generating hammering, whether structure rationally will directly determine electric hammer quality and hammering effect
The quality of fruit.Since piston needs carry out high-frequency reciprocating motion in cylinder, sliding friction between piston and cylinder and band
The abrasion come is more serious, once and the larger leakproofness that will seriously affect cylinder of abrasion loss influences hammer effect in turn.Therefore,
Piston is particularly important with the good lubrication of cylinder between the two.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of electric hammer pistons, the lubrication shape between piston and cylinder
State is good, and piston is not susceptible to wear with cylinder, and part durability is good, can effectively extend the working time of electric hammer.
In order to solve the above-mentioned technical problem, the technical scheme that the utility model is provided is as follows:
A kind of electric hammer piston, including connecting pin and acting end, acting end is cylindrical, and connecting pin is in cydariform, connection
End is provided with the connecting rod cavity of cydariform, and it is convex that the outerplanar of connecting pin is equipped with bolt through-hole, latch projection and oil storage protrusion, bolt
It rises around being arranged around bolt through-hole, oil storage protrusion surrounds and forms the first shoe cream room.Such electric hammer piston, lubricant grease
It can be stored in the first shoe cream room, while the outerplanar of connecting pin and latch projection and oil storage protrusion can also form storage profit
The cavity of lubricating oil rouge ensure that the good lubrication of piston and cylinder.
Further, the outer cylinder of connecting pin is equipped with oil storage tank, circumferentially extending of the oil storage tank along outer cylinder.Oil storage tank
Design can reduce the contact area with cylinder, reduce friction area, while also function to the effect of storage grease.
Further, oil storage protrusion is in semi-circular shape, and the arc top of oil storage protrusion is connected with the end of latch projection.This
The oil storage protrusion grease storage capacity of sample is big, and stable structure can play good booster action to latch projection.
Further, reinforcing rib is additionally provided on the outerplanar of connecting pin, one end of reinforcing rib is connect with latch projection, is reinforced
The other end of muscle is connect with oil storage protrusion.The setting of reinforcing rib is further added latch projection and the intensity of oil storage protrusion
By force.
Further, reinforcing rib, latch projection and oil storage protrusion surround and form the second shoe cream room.Second shoe cream room is set
It sets and further improves the oil storage capacity of piston.
Further, the outerplanar of connecting pin, latch projection, reinforcing rib and oil storage protrusion constitute oil guide groove, oil guide groove
Extend along connecting pin axial direction.The formation of oil guide groove can allow grease more swimmingly to reach piston face.
Further, do work end outer cylinder be equipped with one circle sealing ring annular groove.The setting of sealing ring annular groove realizes close
The installation of seal.
Further, a circle bayonet lock protrusion is additionally provided in bolt through-hole.In general, piston and connecting rod are connected by piston pin
It connects, piston pin may occur play and rub with cylinder inner wall, and the setting of bayonet lock protrusion can play positioning to piston pin
Effect, avoids such case.
Further, the junction of bolt through-hole Yu connecting rod cavity is arranged in bayonet lock protrusion.By the setting of bayonet lock protrusion even
Place is met, piston pin bayonet lock protrusion when being packed into bolt through-hole is more easier to deform, and reduces the installation difficulty of piston pin.
In conclusion such electric hammer piston, the lubricating status between piston and cylinder is good, and piston is not easy with cylinder
It wears, part durability is good, can effectively extend the working time of electric hammer.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the present embodiment electric hammer piston；
Fig. 2 is structural schematic diagram when the present embodiment electric hammer piston is equipped with reinforcing rib；
Wherein, connecting pin -1, connecting rod cavity -11, bolt through-hole -12, bayonet lock protrusion -121, latch projection -13, oil storage is convex
- 14 are played, the first shoe cream room -15, oil storage tank -16, reinforcing rib -17, the second shoe cream room -18, oil guide groove -19, end -2 of doing work seals
Ring slot -21.
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.
As shown in Figure 1, a kind of electric hammer piston, including connecting pin 1 and acting end 2, acting end 2 is cylindrical, connection
End 1 is in cydariform, and connecting pin 1 is provided with the connecting rod cavity 11 of cydariform, and it is convex that the outerplanar of connecting pin 1 is equipped with bolt through-hole 12, bolt
13 and oil storage protrusion 14 are played, for latch projection 13 around being arranged around bolt through-hole 12, oil storage protrusion 14, which surrounds, forms first
Shoe cream room 15.Such electric hammer piston, lubricant grease can be stored in the first shoe cream room 15, while connecting pin 1 is outer flat
Face and latch projection 13 and oil storage protrusion 14 can also form the cavity of storage lubricant grease, ensure that the good of piston and cylinder
Lubrication.
In the present embodiment, the outer cylinder of connecting pin 1 is equipped with oil storage tank 16, circumferentially extending of the oil storage tank 16 along outer cylinder.
The design of oil storage tank 16 can reduce the contact area with cylinder, reduce friction area, while also function to the effect of storage grease.
Meanwhile oil storage protrusion 14 is in semi-circular shape, the arc top of oil storage protrusion 14 is connected with the end of latch projection 13.
The raised 14 grease storage capacitys of such oil storage are big, and stable structure can play good booster action to latch projection 13.
Preferably, as shown in Fig. 2, be additionally provided with reinforcing rib 17 on the outerplanar of connecting pin 1, one end of reinforcing rib 17 and insert
Pin protrusion 13 connects, and the other end of reinforcing rib 17 is connect with oil storage protrusion 14.The setting of reinforcing rib 17 further makes latch projection
13 are strengthened with the intensity of oil storage protrusion 14.Reinforcing rib 17, latch projection 13 and oil storage protrusion 14 are stored up around forming second
Oil pocket 18.The setting of second shoe cream room 18 further improves the oil storage capacity of piston.
Outerplanar, latch projection 13, reinforcing rib 17 and the oil storage protrusion 14 of connecting pin 1 constitute oil guide groove 19, oil guide groove
19 extend along 1 axial direction of connecting pin.The formation of oil guide groove 19 can allow grease more swimmingly to reach piston face.
The outer cylinder at acting end 2 is equipped with a circle sealing ring annular groove 21.The setting of sealing ring annular groove 21 realizes sealing ring
Installation.
Preferably, being additionally provided with a circle bayonet lock protrusion 121 in bolt through-hole 12, as shown in Figure 2.In general, piston with
Connecting rod may be occurred play and be rubbed with cylinder inner wall by piston pin connection, piston pin, and the setting of bayonet lock protrusion 121 can
To play positioning action to piston pin, such case is avoided.
In the present embodiment, the junction of bolt through-hole 12 Yu connecting rod cavity 11 is arranged in bayonet lock protrusion 121.By bayonet lock protrusion
121 are arranged in junction, and piston pin bayonet lock protrusion 121 when being packed into bolt through-hole 12 is more easier to deform, and reduces work
The installation difficulty of plug pin.
In conclusion such electric hammer piston, the lubricating status between piston and cylinder is good, and piston is not easy with cylinder
It wears, part durability is good, can effectively extend the working time of electric hammer.
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 electric hammer piston, it is characterised in that: including connecting pin and acting end, the acting end is cylindrical, described
Connecting pin is in cydariform, and the connecting pin is provided with the connecting rod cavity of cydariform, and the outerplanar of the connecting pin is equipped with bolt through-hole, inserts
Pin protrusion and oil storage protrusion, the latch projection is around being arranged around bolt through-hole, and the oil storage protrusion is around forming the
One shoe cream room.
2. electric hammer piston described in accordance with the claim 1, it is characterised in that: the outer cylinder of the connecting pin is equipped with oil storage
Slot, circumferentially extending of the oil storage tank along outer cylinder.
3. electric hammer piston described in accordance with the claim 1, it is characterised in that: the oil storage protrusion is in semi-circular shape, the storage
The arc top of oily protrusion is connected with the end of latch projection.
4. electric hammer piston described in accordance with the claim 1, it is characterised in that: be additionally provided with reinforcement on the outerplanar of the connecting pin
One end of muscle, the reinforcing rib is connect with latch projection, and the other end of the reinforcing rib is connect with oil storage protrusion.
5. electric hammer piston according to claim 4, it is characterised in that: the reinforcing rib, latch projection and oil storage are convex
It rises around the second shoe cream room of formation.
6. electric hammer piston according to claim 4, it is characterised in that: the outerplanar of the connecting pin, adds latch projection
Strengthening tendons and oil storage protrusion constitute oil guide groove, and the oil guide groove extends along connecting pin axial direction.
7. electric hammer piston described in accordance with the claim 1, it is characterised in that: it is close that the outer cylinder at the acting end is equipped with a circle
Seal annular groove.
8. according to electric hammer piston described in claim 1-7 any one, it is characterised in that: be additionally provided in the bolt through-hole
One circle bayonet lock protrusion.
9. electric hammer piston according to claim 8, it is characterised in that: the bayonet lock protrusion is arranged in bolt through-hole and company
The junction of bar cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821229939.5U CN208729711U (en) | 2018-08-01 | 2018-08-01 | A kind of electric hammer piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821229939.5U CN208729711U (en) | 2018-08-01 | 2018-08-01 | A kind of electric hammer piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208729711U true CN208729711U (en) | 2019-04-12 |
Family
ID=66029135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821229939.5U Active CN208729711U (en) | 2018-08-01 | 2018-08-01 | A kind of electric hammer piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208729711U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113790139A (en) * | 2021-09-27 | 2021-12-14 | 杭州温格科技有限公司 | Miniature piston fluid pump |
-
2018
- 2018-08-01 CN CN201821229939.5U patent/CN208729711U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113790139A (en) * | 2021-09-27 | 2021-12-14 | 杭州温格科技有限公司 | Miniature piston fluid pump |
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| GR01 | Patent grant | ||
| 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. |