CN1847714B - Two stage grease gun - Google Patents
Two stage grease gun Download PDFInfo
- Publication number
- CN1847714B CN1847714B CN2006100747782A CN200610074778A CN1847714B CN 1847714 B CN1847714 B CN 1847714B CN 2006100747782 A CN2006100747782 A CN 2006100747782A CN 200610074778 A CN200610074778 A CN 200610074778A CN 1847714 B CN1847714 B CN 1847714B
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- China
- Prior art keywords
- plunger
- grease gun
- volume
- extension
- vertical hole
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F11/00—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it
- G01F11/02—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement
- G01F11/021—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement of the piston type
- G01F11/025—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement of the piston type with manually operated pistons
- G01F11/026—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement of the piston type with manually operated pistons of the gun type
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Coating Apparatus (AREA)
Abstract
A portable grease gun with a dual pressure output capability which can be selectively changed by the user with little effort. A larger diameter plunger is longitudinally coupled to an extension. The larger diameter plunger and its extension are variable in length by manual rotation of the extension relative to the larger diameter plunger. The larger diameter plunger is slidable within a plunger retainer over a limited range and is not free to rotate within the plunger retainer. The larger diameter plunger and the plunger extension have aligned bores through them in which a smaller diameter plunger is slidable. The smaller diameter plunger moves when an actuating lever is operated to compress grease in the grease gun. The larger diameter plunger may be adjusted to remain static during operation of the actuating lever or it may be adjusted to move during all or part of the compression stroke of the actuating lever.
Description
The cross reference of related application
The application requires to be registered on April 15th, 2004 for U. S. Patent and trademark office, and its exercise question is that the temporary patent application s/n 60/562,355 of " the portable grease gun of multiple pressure " proposes preference.The disclosure content of temporary patent application sequence number 60/562,355 is all comprehensively at this.
Technical field
The invention belongs to portable grease gun, comprise manually-operable or aerodynamic force driving or battery-operated.Typical manually-operable grease gun comprises the piston that can extrude lubricating grease from nozzle, and lubricating grease is inserted the box from the attached grease box that contains a large amount of lubricating grease or lubricating grease and is transported in the pressing chamber.The grease gun that great majority have existed only provides a kind of delivery pressure of from rifle, exporting lubricating grease.
Background technique
The user of common grease gun runs into fuel filler neck and can not accept lubricating grease owing to stop up or block.In such situation, only if change fuel filler neck otherwise idle.A kind of grease gun of tratitional technology need change the position adjustment mechanical advantage (lever ratio) of handle.The pressure that such device can not be provided as the fuel filler neck required 5 to 1 that overcomes obstruction improves.The complicated labyrinth seal of another kind of tratitional technology grease gun utilization and mechanical switch joint or throw off a steel ball safety check and change the pressure that lubricating grease leaves grease gun.Such device do not allow from attached grease box the grease gun fuel feeding, so the portability of this device and versatility are limited.
Brief summary of the invention
A kind of portable grease gun has the dual-pressure output capability, can selected easily to change by the user.Grease gun comprises plunger assembly, and this assembly has larger-diameter volume plunger, vertically optionally with being threaded onto plunger extension.The volume plungers length that has plunger extension can be through more or less volume plunger endoporus is inserted in the extension and change.This be through plunger extension with respect to volume plunger rotation, thereby the connection end of volume plunger extension utilizes the screw thread shift-in or shifts out and accomplish in the volume plunger hole.The volume plunger is received in the longitudinal passage of volume plunger retainer with its extension, and this path can limit the longitudinal movement of volume plunger, and prevents that the volume plunger from rotatablely moving with respect to volume plunger retainer.Pressure plunger than minor diameter slides in the endoporus through volume plunger and satellite plunger extension.Plunger assembly longitudinally is received in the endoporus of grease gun body.
Carry out lever for one and on the grease gun body, pivot, this rifle body is included in the assembly in vertical hole of passing through in its body.Lever comprises the thrust block pad of abutment post plug assembly, compressive pressure plunger and oppress the output aperture of volume plunger trend grease gun selectively.
Force out the pressure that requires of lubricating grease to pass through the effective length that volume plunger and plunger extension combination are shortened or prolonged in rotary plunger extension optionally from the grease gun body, thereby control this pressure.When plunger extension was received in the hole of volume plunger the biglyyest, the volume plunger was prevented from doing vertical action.But, can slide along the endoporus of volume plunger and plunger extension, get into pressing chamber and extrude lubricating grease with high pressure and low volume mode than the pressure plunger of minor diameter.When the plunger extension inferior limit when being received in the hole of volume plunger; The effective length of volume plunger and plunger extension combination increases; Thereby when the thrust block pad of carrying out lever applies strength for volume plunger and plunger extension end; Allow that the volume plunger moves into pressing chamber, the two moves jointly to impel volume plunger and pressure plunger.
During middle insertion position in plunger extension moves to the volume plunger hole; The action of lever will at first cause the plunger motion of independent pressure; In carrying out throw of lever first portion, carry high-pressure grease; And when thrust block pad begins roof pressure plunger extension and pressure plunger, carry low pressure grease subsequently, the two tends to the output body of grease gun together thereby force pressure plunger and volume plunger.Therefore grease gun can be used in carrying out lever shape journey first portion, applying high-pressure grease for resistant fuel filler neck, and after the resistance of fuel filler neck is overcome, carries big capacity lubricating grease under low pressure then.
Main purpose of the present invention provides a kind of grease gun, and it can be adjusted into is carrying lubricating grease under high pressure and the low volume or under low pressure and big volume.Another purpose of the present invention provides a kind of portable grease gun, and it can be adjusted into the obstruction that can overcome fuel filler neck or block, and under lower pressure and high volume, lubricating grease is injected the fuel filler neck through correcting then.The present invention also has purpose to provide a kind of grease gun, and it easily needn't tool using by the user and adjusts delivery pressure.Attached purpose of the present invention provides a kind of grease gun of easy manufacturing, can under more than a kind of pressure, extrude lubricating grease.
Brief Description Of Drawings
Fig. 1 is the exploded perspective view according to grease gun preferred embodiment of the present invention.
Fig. 2 is the sectional drawing of preferred embodiment of the present invention, wherein carry out lever and be shown as and shrink back fully, and along with carrying out lever when the handle motion, plunger assembly is adjusted into conveying lubricating grease under high pressure and low volume.
Fig. 3 is like adjusted grease gun preferred embodiment sectional drawing among Fig. 2, but wherein carry out the lever roof pressure on the grease gun handle and the pressure plunger advance to outlet non-return valve.
Fig. 4 is a preferred embodiment sectional drawing of the present invention, wherein carry out lever and shrink back fully, and along with carrying out lever to handle motion, plunger assembly is adjusted into and under high pressure and low volume, carries lubricating grease.
Fig. 5 is like adjusted grease gun preferred embodiment sectional drawing among Fig. 4, but wherein carries out the lever roof pressure on the grease gun handle and in the pressing chamber of pressure plunger and the two entering grease gun that all advances of volume plunger.
Fig. 6 is a preferred embodiment sectional drawing of the present invention, wherein carries out lever and shrinks back fully, and begin in the part at the execution throw of lever, and plunger assembly is adjusted under high pressure carries lubricating grease, and in the stroke remaining part, under low pressure carries.
Fig. 7 is like adjusted grease gun preferred embodiment sectional drawing among Fig. 6; Wherein carry out lever and be in its stroke midway; This moment, the high-pressure section of stroke was accomplished, and the position of plunger assembly is under big volume and the low pressure in carrying out the remaining part that lever tends to the handle stroke and carries lubricating grease.
Fig. 8 is like adjusted grease gun preferred embodiment sectional drawing among Fig. 6, and the execution lever roof pressure that is wherein shown is on handle, and the pressure plunger advances to greatest extent and gets into pressing chamber and the volume plunger partly advances in the pressing chamber.
Concrete mode of execution
With reference to Fig. 1-8 and at first especially with reference to Fig. 1.Fig. 1 discloses a kind of according to grease gun body 1 of the present invention, and wherein plunger assembly 27 is shown as decomposition view.Plunger assembly 27 is received in vertical hole 28 of grease gun body 1.Plunger assembly 27 comprises volume plunger 3, and this plunger is received in the cylindrical, hollow plunger retainer 9 slidably.Have open pore 29 in the plunger retainer 9, on its sidewall 30, insert guide finge 17.Volume plunger 3 comprises elongated slot 31, wherein stretches into guide finge 17 and rotates with respect to plunger retainer 9 to prevent the volume plunger, and remain on the interior vertically unrestricted motion of plunger retainer 9 inherent block piece institute's limited fields.
O-shape ring 23 is received in plunger retainer 9 inner 32 with supporting ring 25.The outer end, opposite 33 of plunger retainer 9 is threaded so that be received in the tapped hole 28.Slit 56 is arranged on and helps on the outer end 33 in the plunger retainer 9 screw-in holes 28.
Through plunger extension 11 clockwise or anticlockwise rotations, the plunger extension 11 that can select to connect coaxially and the effective length of volume plunger.Thumb wheel 48 on plunger extension 11 makes things convenient for the user to make its rotation.
The scope of volume plunger 3 vertical narrowing movements is by inner barrier 57 (separating with the plunger retainer 9 inner 32) (see figure 6) that limits.Volume plunger 3 comprises that from the outer end 49 extend to the reaming 50 at middle part.The inner 34 that holds plunger extension 11 in the reaming 50, and the remaining part minification of path 35 with the body 38 of admitting pressure plunger 2 so that in interior slip.
For getting into the 35 inner and slips therein of volume plunger 3 paths, pressure plunger 2 must pass the hole 37 of plunger extension 11.Pressure piston spring 13 bias pressure plungers 2 heads 39 make it 37 longitudinally outside along the hole, and the interconnected plunger extension 11 of volume piston spring 12 bias voltages and volume plunger 3 make it 36 longitudinally outside along the hole.The inside longitudinal movement of volume plunger 3 receives the restriction of thumb wheel 48 contact plunger retainers 9 outer ends 33.
With reference now to Fig. 2 and 3,, grease gun also comprises with pin 46 and is hinged on the execution lever 5 on the grease gun body 1 pivotally.Thrust block pad 4 remains on through spring pin 10 and carries out on the lever 5, and makes thrust block pad 4 around spring pin 10 rotations, is pressed on pressure plunger 2 exterior edge faces 40 so that keep planar top.
In Fig. 2, shown in grease gun 26 prepare to begin from pressing chamber 45, under high pressure to extrude lubricating grease through output body 6, be exactly, greatly in 10,000 pounds of/square inch scopes.Carry out lever 5 and shrink back, and along with it is shunk back from grease gun body 1, pressure piston spring 13 forces pressure plunger 2 follow thrust block pad 4 (because it is carried on the spring pin 10 of carrying out lever 5) from handle 8.Volume plunger 3 is shunk back from pressing chamber 45 to greatest extent, and the pin 42 of pressure plunger 2 partly is retained in the pressing chamber.Pressing chamber 45 can be full of from the lubricating grease of grease box 24 through input Non-Return steel ball 21.
Fig. 3 is disclosed in and carries out that lever 5 has been retracted and piston element position after resting on the handle 8.Volume plunger 3 remains on same position among Fig. 2, and pressure plunger 2 has further been charged into pressing chamber 45, and wherein pin 42 inserts in the output channel 51, thereby enforced lubricating fat flows through output Non-Return steel ball 20 from pressing chamber 45.Be applied to the force compresses pressure piston spring 13 on pressure plunger 2 exterior edge faces 40 by thrust block pad 4.
Referring now to Figure 4 and 5, grease gun 26 is shown as the state of under low pressure extruding big capacity lubricating grease.Fig. 4 illustrates when carrying out lever 5 position of pressure plunger 2 and volume plunger 3 when handle 8 is shunk back to greatest extent.Grease gun state in Figure 4 and 5, plunger extension 11 are shunk back from the reaming 50 of volume plunger 3 through the selectivity rotation (from reaming 50, unscrewing the inner 34 of plunger extension 11 through manipulation thumb wheel 48 in the above effectively) of plunger extension 11.Extend the comprehensive length of volume plunger 3 and plunger extension 11 so effectively, the outer end 52 of plunger extension 11 is extended from vertical hole 28 with from plunger retainer 9.Should be appreciated that, begin to move that the thrust block pad semi-finals urges power plunger 2 and crosses over pressing chamber 45 with volume plunger 3 trend output bodies 6 to handle 8 along with carrying out lever 5.This motion causes volume plunger 3 to force big capacity lubricating grease under low pressure to pass through the output Non-Return steel ball 20 under delivery spring 15 resistances together with pressure plunger 2.
Carry out lever 5 fully roof pressure after on the handle 8; As shown in Figure 5; Volume plunger 3 has crossed pressing chamber 45 and trend output channel 51 with pressure plunger 2, causes low pressure grease to pass through along output channel 51, and flows through the output Non-Return steel ball of output body 6.
Fig. 6-8 illustrates the adjusted position of grease gun 26, wherein plunger extension 11 be contained in the volume plunger 3 reaming 50 midway.The rotary plunger extension 11 optionally through handling thumb wheel 48, inner 34 can move into the neutral position of the reaming 50 in the volume plunger 3.On this position, grease gun 26 can under high pressure or under big volume be carried lubricating grease according to carrying out lever 5 degree of shrinking back.Specifically, in Fig. 6, execution lever 5 is shown as fully shrinks back, and makes grease gun 26 prepare under high pressure to extrude lubricating grease, as when the fuel filler neck that blocks has been got through.Volume plunger 3 rests on the position of rest of the power of the shrinking back decision of being set up by volume piston spring 12 (inner barrier 57 by plunger retainer 9 limits).Pressure plunger 2 is owing to the compressing of pressure piston spring 13 is shunk back from output body 6, but such shrinking back receives the restriction of its head 39 roof pressures at thrust block pad 4.
As visible in Fig. 7, along with carrying out lever 5 from complete retracted position trend handle 8 midway, pressure plunger 2 has been compelled to get into pressing chamber 45 and volume plunger 3 remains on it like position of rest visible among Fig. 6.Along with the pin 42 of pressure plunger crosses pressing chamber 45; Wherein lubricating grease is forced under the pressure and is expressed into (not shown) in the fuel filler neck through output Non-Return steel ball 20, and this fuel filler neck can be inserted in and be attached on the coupling and extension of output body 6 near output non-return screw 16 places.Therefore high-pressure grease can force the fuel filler neck that gets into obstruction and overcome its obstruction.The position of from Fig. 7, carrying out lever 5 is visible, and grease gun 26 is in along with carrying out lever 5 and continues to move and carry the state of lubricating grease under low pressure to handle 8.
Fig. 8 be illustrated in carry out lever 5 accomplished its stroke and with handle 8 roof pressures after the position of volume plunger 3 and pressure plunger 2.Volume plunger 3 has got into pressing chamber 45 together basically with the mobile phase of pressure plunger 2, and plunger assembly 27 is being extruded lubricating grease through output body 6 from pressing chamber 45 under big volume and low pressure.
Therefore should be appreciated that when plunger extension 11 inner 34 was inserted the reaming 50 of volume plunger 3 to greatest extent, grease gun 26 can be adjusted to and under high pressure and low volume, carry lubricating grease.But, when plunger extension 11 inner 34 bottom lines insert the reaming 50 of volume plunger 3, grease gun 26 will be extruded lubricating grease under low pressure and big volume.In addition, plunger assembly 27 can so be adjusted, and makes to carry out lever 5 and from its complete retracted position begins the first portion of stroke, carry lubricating grease under high pressure, and in carrying out lever 5 stroke remaining parts, carries lubricating grease under low pressure.Such adjustment is to insert the degree of depth in the reaming 50 of volume plunger through changing plunger extension 11 inner 34.Adjust through selectivity; Cause grease gun 26 to carry the execution throw of lever proportional parts of high-pressure grease to change; Be exactly; Volume plunger 3 is short more with the effective length of plunger extension 11 combinations, carries out lever 5 and will carry the proportional parts of complete retracted position stroke of high-pressure greases big more from grease gun 26 from it.Effective length increase along with volume plunger 3 and plunger extension 11; Carry out lever 5 and will carry the proportional parts of the complete retracted position stroke of high-pressure greases will be more little from grease gun 26, and the compression stroke remainder of carrying out lever 5 trend handles 8 causes low pressure grease to extrude from grease gun 26 from it.
The above description of the present invention has proposed as general remark and description, but is not intended to the accurate disclosure form as detailed explanation or restriction invention.Consider above disclosure content or through making embodiment's modification or variation after the practice of the present invention.The above embodiment that illustrates be mainly explain principle of the present invention with its practical application in case industry skilled person consider to utilize the present invention with various embodiments and various modification in the special-purpose being fit to.The scope of the invention is limited accompanying claims and its equal file.
Claims (12)
1. grease gun comprises:
The grease gun body has the path through wherein,
Carry out lever, on the grease gun body, pivot,
First plunger longitudinally slides by limited distance in path,
This first plunger has longitudinal passage wherein,
Second plunger is received in the longitudinal passage of first plunger and can slides therein,
Carrying out the motion of lever from retracted position to the part closed position only influences the motion of second plunger in this longitudinal passage,
Carry out motion effects second plunger and the motion of first plunger of lever from the part closed position to closed position.
2. grease gun comprises:
The grease gun body has the vertical hole through wherein,
Carry out lever, on the grease gun body, pivot,
A plunger assembly is accepted in vertical hole of this grease gun body,
This plunger assembly comprises the plunger retainer,
This plunger retainer is not movable in vertical hole of grease gun body,
This plunger retainer is accepted a volume plunger in passing through longitudinal passage wherein,
This plunger retainer prevents that the volume plunger from rotatablely moving in vertical hole of grease gun body,
This volume plunger slides in limited range along plunger retainer path selectively,
The volume plunger comprises the plunger extension of longitudinally adhering to above that,
This plunger extension is arranged in the path of plunger retainer,
This volume plunger has selectable length,
This volume plunger comprises the vertical hole through wherein,
This plunger extension has the path through wherein, and this path is coaxial with vertical hole of volume plunger,
The pressure plunger is received in vertical hole of volume plunger in the path with plunger extension slidably,
First spring forces pressure plunger trend carry out lever,
Second spring forces the plunger extension trend carry out lever.
3. grease gun as claimed in claim 2 is characterized in that, carries out lever and is carried out by manually-operable.
4. grease gun as claimed in claim 3 is characterized in that the volume plunger is coaxial with the plunger retainer.
5. grease gun as claimed in claim 2 is characterized in that the plunger retainer comprises the pin in the slit that may be received in the pressure plunger, and this pin restriction volume plunger rotates with respect to the plunger retainer.
6. grease gun as claimed in claim 2 is characterized in that,
The volume plunger is coaxial with the plunger retainer,
The pressure plunger is coaxial with the volume plunger.
7. grease gun as claimed in claim 2 is characterized in that,
Plunger extension comprises first end,
The volume plunger comprises admits end,
First end of plunger extension is received in the admittance end of volume plunger by the selected degree of depth.
8. grease gun as claimed in claim 7 is characterized in that,
Outside thread on plunger extension first end and volume plunger are admitted the internal thread engagement in the end.
9. grease gun as claimed in claim 2 is characterized in that,
Carry out lever and comprise thrust component,
The outer end of this thrust component abutment pressure plunger.
10. grease gun, it comprises:
The grease gun body has the vertical hole through wherein,
Carry out lever, on the grease gun body, pivot,
One first plunger assembly is accepted in vertical hole of this grease gun body,
This first plunger assembly can slide in limited range along vertical hole of grease gun body,
This first plunger assembly comprises first plunger body and plunger extension, and this plunger extension is from the first plunger body longitudinal extension,
The length of this first plunger assembly can change selectively,
This first plunger body can not rotate in vertical hole of grease gun body,
This first plunger assembly has the longitudinal passage through wherein,
In the longitudinal passage of first plunger assembly, admitting slidably has second plunger,
First spring forces second plunger trend carry out lever,
Second spring forces first plunger assembly trend carry out lever.
11. grease gun as claimed in claim 10 is characterized in that,
First plunger body links to each other with plunger extension through screw thread,
The length of first plunger assembly can be come manual tune with respect to the rotation of first plunger body through plunger extension.
12. grease gun as claimed in claim 10 is characterized in that,
In vertical hole of grease gun body, be fixed with a sleeve pipe,
First plunger assembly is slidably received within the vertical hole of one in the sleeve pipe,
Sleeve pipe prevents that first plunger body from rotating in sleeve pipe,
Plunger extension can be rotated in sleeve pipe.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/106,417 US7337927B2 (en) | 2004-04-15 | 2005-04-14 | Two stage grease gun |
| US11/106,417 | 2005-04-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1847714A CN1847714A (en) | 2006-10-18 |
| CN1847714B true CN1847714B (en) | 2012-09-05 |
Family
ID=37077388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006100747782A Expired - Fee Related CN1847714B (en) | 2005-04-14 | 2006-04-11 | Two stage grease gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1847714B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4219131A (en) * | 1979-03-12 | 1980-08-26 | Roger Funderburgh | Grease gun with pressure release assembly |
| CN2122291U (en) * | 1991-09-11 | 1992-11-18 | 日和产业株式会社 | Pressure release valve |
| US6186750B1 (en) * | 1999-04-27 | 2001-02-13 | Borgwarner, Inc. | Oil pump control valve spool with pilot pressure relief valve |
| US6675936B2 (en) * | 2000-09-18 | 2004-01-13 | Abb Oy | Lubricant discharge device |
-
2006
- 2006-04-11 CN CN2006100747782A patent/CN1847714B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4219131A (en) * | 1979-03-12 | 1980-08-26 | Roger Funderburgh | Grease gun with pressure release assembly |
| CN2122291U (en) * | 1991-09-11 | 1992-11-18 | 日和产业株式会社 | Pressure release valve |
| US6186750B1 (en) * | 1999-04-27 | 2001-02-13 | Borgwarner, Inc. | Oil pump control valve spool with pilot pressure relief valve |
| US6675936B2 (en) * | 2000-09-18 | 2004-01-13 | Abb Oy | Lubricant discharge device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1847714A (en) | 2006-10-18 |
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