CN101876372A - Plunger - Google Patents
Plunger Download PDFInfo
- Publication number
- CN101876372A CN101876372A CN2010101580773A CN201010158077A CN101876372A CN 101876372 A CN101876372 A CN 101876372A CN 2010101580773 A CN2010101580773 A CN 2010101580773A CN 201010158077 A CN201010158077 A CN 201010158077A CN 101876372 A CN101876372 A CN 101876372A
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- CN
- China
- Prior art keywords
- advance
- retreat
- ball
- plunger
- mentioned
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000011324 bead Substances 0.000 claims abstract description 19
- 230000004308 accommodation Effects 0.000 description 9
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 239000002184 metal Substances 0.000 description 4
- 239000012467 final product Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000007769 metal material Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J1/00—Pistons; Trunk pistons; Plungers
- F16J1/005—Pistons; Trunk pistons; Plungers obtained by assembling several pieces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B21/00—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings
- F16B21/10—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Pivots And Pivotal Connections (AREA)
Abstract
The invention provides a kind of plunger, between the member that this plunger is used for relatively moving, in this plunger, can member be moved mutually.Has the main body cylindraceous (10) that is provided with external screw thread (11) at outer circumferential face, be contained in the pressure spring (20) of the inside of this main body (10), can freely advance and retreat, can not be assembled in to pull-off the interior forward end side of aforementioned body (10), by the advance and retreat body (30) of above-mentioned pressure spring (20) in the direction of advance application of force, be located at the recess (31) of this advance and retreat body (30) forward end, be configured in a plurality of beads (40) at the end of this recess (31), can freedom rollably support and a part of ball (50) that can not be assembled in to pull-off above-mentioned recess (31) from the front end of above-mentioned advance and retreat body (30) highlightedly by this bead (40).
Description
Technical field
The present invention relates to a kind of plunger.
Background technique
Plunger as mechanical component is known, general plunger by the cylindrical main body that is provided with external screw thread at outer circumferential face, in be contained in the pressure spring of main body and can be assembled in main body with freely advancing and retreat and constitute by the pin of pressure spring in the direction of advance application of force.Such plunger is provided with female thread on the member of the assembly object by becoming plunger, the external screw thread screwed joint that makes main body is at this female thread, thereby can be installed in easily on the member of mounting object.
In addition, plunger can use in various fields, occasion between the member that is used for relatively moving, can make and plunger is installed at a side member, the action of restriction the opposing party's member, or pushing the opposing party's member, or utilize the variation of member that the advance and retreat of pin absorb the opposing party with respect to the moving an of side member, shape.Here, representational using method as plunger, example illustrates such situation, promptly, on a side member, plunger is installed, hole, groove are set on the opposing party's member, the pin of the plunger of the member that is installed in a side is fastened in the hole, groove of the member of being located at the opposing party, thereby carry out in the plane or the location around between the member that running shaft etc. moves relatively, the calibration of angle of swing.
Below, the occasion between the member that plunger is used for relatively moving is called " installation side member " with the member that side of plunger is installed, and the member of that side of the pin butt of plunger is called " butt side member ".
Summary of the invention
For the situation of between the member of action relatively, using plunger, make by the pin of butt side member pushing plunger under its state that has retreated, the front end sliding contact of pin is at the butt side member.Here, big as the contact resistance of pin and butt side member, then hinder of the level and smooth action of butt side member with respect to the installation side member.
, in plunger, can ball rollably be housed freedom in main body sometimes, to replace above-mentioned pin.Be so-called " bulb stopper (ボ one Le プ ラ Application ジ ヤ) ".According to bulb stopper, the ball that is connected to the butt side member rolls, so, can make the butt side member be difficult to be hindered with respect to the level and smooth action of installation side member.
Yet bulb stopper in the past directly in the direction of advance application of force, so the rollability of talkative ball is very not good, hinders the level and smooth action of butt side member with respect to the installation side member by the interior pressure spring that is loaded on main body sometimes.Particularly, apply the strong pushing force that produces by pressure spring at ball in the occasion of the bulb stopper of use under high load, so, significantly produced ball and be difficult to roll, hinder the smooth-acting problem of butt side member with respect to the installation side member.
The present invention makes in view of above-mentioned actual conditions, and its purpose is, the occasion of the plunger between the member that is used for relatively moving can be moved member mutually fully smoothly.
In order to achieve the above object, the main means that the present invention takes are for providing a kind of like this plunger, and this plunger is characterised in that: have main body cylindraceous, pressure spring, advance and retreat body, recess, a plurality of bead, reach ball;
This main body cylindraceous is provided with external screw thread at outer circumferential face;
This pressure spring is contained in the inside of this main body;
This advance and retreat body can freely be advanced and retreat and can not disengageably be assembled in the interior forward end side of aforementioned body, by above-mentioned pressure spring in the direction of advance application of force;
This recess is located at the forward end of this advance and retreat body;
These a plurality of beads are configured at the end of this recess;
This ball can freedom rollably be supported by this bead, and, so that the part of this ball can not be assembled in to pull-off above-mentioned recess from the outstanding mode of the front end of above-mentioned advance and retreat body.
In the occasion of the plunger of above-mentioned formation, the advance and retreat body works as the pin of in the past general plunger, but is provided with the ball of the recess that is assembled in the body of advancing and retreat at the front end of this advance and retreat body, and this ball is connected to this butt side member.In addition, ball can freedom rollably be supported by a plurality of beads at the end of the recess that is configured in the advance and retreat body, rolls well.
Therefore, at the plunger of above-mentioned formation, the ball that is connected to the advance and retreat body of butt side member rolls well, so, promptly be used between the member of action relatively, also can make member action fully smoothly mutually.
In above-mentioned means,
Preferably plunger has such feature:
Above-mentioned advance and retreat body has ball fastening portion at fore-end, and the outside of this ball fastening portion becomes the more little taper of past more front end diameter, makes that by this ball fastening portion above-mentioned ball can not pull-off,
Aforementioned body has the advance and retreat body fastening portion of the outside that is connected to above-mentioned ball fastening portion at fore-end, makes that by this advance and retreat body fastening portion above-mentioned advance and retreat body can not pull-off.
Can merely imagine, can not at the advance and retreat body major diameter parts such as lip part be set from main body pull-off advance and retreat body, the fastening portion of this major diameter part of fastening is set in main body in order to make.Yet, under such form, the big part of diameter is set at the advance and retreat body, plunger integral body is radially being maximized.
With respect to this, in the occasion of the plunger of above-mentioned formation, be arranged so that the ball fastening portion that ball can not pull-off at the fore-end of advance and retreat body, the outside of this ball fastening portion is formed the taper of the more little what is called of past more front end diameter " thin head ".In addition, deviate from from main body by the advance and retreat body fastening portion of the outside of the ball fastening portion that is connected to the taper that the becomes thin head body that prevents to advance and retreat.
Therefore, in the occasion of the plunger of above-mentioned formation, major diameter such as the lip part body that partly promptly can prevent to advance and retreat is not set on the advance and retreat body throws off, in the whole miniaturization that realizes radially of plunger from main body.
And, in the occasion that forms advance and retreat body, main body by metal, after the body of maybe will advancing and retreat after ball being inserted into the advance and retreat body is inserted into main body, pushing distortion promptly so-called " ca(u)lk " by metallic material forms ball fastening portion, advance and retreat body fastening portion, thereby can carry out ball easily with respect to the assembling of advance and retreat body, the assembling of body with respect to main body of advancing and retreat.
In addition, be not limited to after ball being inserted into the advance and retreat body, the body of will advance and retreat is formed for preventing ball from ball fastening portion that the advance and retreat body is thrown off or be used to prevent to advance and retreat body from the advance and retreat body fastening portion that main body is thrown off by raw-material texturing processing after being inserted into main body, also can make inlet side become minor diameter ground be shaped in advance the advance and retreat body that is used to assemble ball recess inner face, assemble the inner face of the main body cylindraceous of the body of advancing and retreat.
Occasion being pre-formed ball fastening portion, advance and retreat body fastening portion also can make the rear end of advance and retreat body, the open rearward end of main body, inserts ball from the rear end side of advance and retreat body, inserts the advance and retreat body from the rear end side of main body.Under such form, after ball being inserted into the advance and retreat body, after the body of will advance and retreat is inserted into main body, the opening of rear end that is stopped up opening, the main body of the rear end of the body of advancing and retreat by other member gets final product.
In addition, in the occasion that forms advance and retreat body, main body by resin, also can ball be pressed into the recess of advance and retreat body from a side of preformed ball fastening portion, advance and retreat body fastening portion, the advance and retreat body is pressed into the inside of main body etc., make ball fastening portion, advance and retreat body fastening portion resiliently deformable, thereby can assemble ball at the advance and retreat body in not pull-off ground, can not pull-off ground assembling advance and retreat body in main body.
In above-mentioned means,
Preferably plunger has such feature:
Above-mentioned advance and retreat body has at radially outstanding lip part at rear end part,
Aforementioned body has the advance and retreat body fastening portion that is connected to above-mentioned lip part at fore-end, makes the above-mentioned advance and retreat body can not pull-off by this advance and retreat body fastening portion.
In the occasion of directly having assembled the bulb stopper of ball in main body, must make ball from the overhang of the main body radius of football not, can not be with the advance and retreat stroke (occasion at bulb stopper is the advance and retreat stroke of ball) of the member of advance and retreat, promptly the advance and retreat travel settings as plunger must be bigger.
With respect to this,, ball is assembled in main body by the advance and retreat body in the occasion of the plunger of above-mentioned formation.In addition, advance and retreat body rear end part lip part is set, by advance and retreat body fastening portion this lip part of fastening of main body, thereby the body that prevents to advance and retreat is thrown off from main body.For this reason, by increasing the total length of advance and retreat body, can increase the length of the stroke of plunger.
Therefore, in the occasion of above-mentioned formation, the advance and retreat stroke as plunger freely can be set in more than the radius of ball.
As described above, according to the present invention,, also can make member smoothly action fully mutually even between the member of action relatively, use plunger.
Description of drawings
Fig. 1 is the central longitudinal sectional view of an example of expression plunger of the present invention.
Fig. 2 is the central longitudinal sectional view of another example of expression plunger of the present invention.
Embodiment
Describe the form of implementation of plunger of the present invention below with reference to the accompanying drawings in detail.
＜form of implementation 1 〉
Fig. 1 represents an example of plunger 100.
The main body 10 of plunger 100 forms the tubular that has an end closure at the end in rear end side by suitable raw material such as metal, resins.In addition, in total length external screw thread 11 is set, makes the female thread on the member of this external screw thread 11 and the mounting object of being located at plunger 100 carry out screwed joint, thereby plunger 100 can be installed on the member of mounting object easily at the outer circumferential face of main body 10.In addition, the rear end side in main body 10 is provided with the workpiece engagement portions 13 such as hexagon ring that hexagon wrench is used.
The inside of main body 10 becomes accommodation section 12, and 12 accommodate pressure spring 20 in the accommodation section.In addition, 12 forward end can be accommodated advance and retreat body 30 in main body 10 axial with freely advancing and retreat in the accommodation section, this advance and retreat body 30 by pressure spring 20 in the direction of advance application of force.
Advance and retreat body 30 forms the cup-shaped that has at the recess 31 of forward end opening, disposes a plurality of beads 40 at the end of recess 31.In addition, at recess 31, ball 50 is housed in the position that more is in forward end than bead 40, prevents that by ball fastening portion 32 intake section of recess 31, that inner face becomes minor diameter ball 50 from throwing off from recess 31.Here, in the occasion that forms advance and retreat body 30 by metal, after ball 50 is inserted into recess 31, the intake section of recess 31 is carried out ca(u)lk processing, thereby can form ball fastening portion 32 easily.
In addition, the outside of ball fastening portion 32 forms the then more little taper of diameter of past more front end, is thrown off from main body 10 by the advance and retreat body fastening portion 14 of the main body 10 of the outside that is connected to this ball fastening portion 32 body 30 that prevents to advance and retreat.,, after the body 30 of will advancing and retreat is inserted into accommodation section 12, the intake section of accommodation section 12 is carried out ca(u)lk processing here, thereby can form advance and retreat body fastening portion 14 easily in the occasion that forms main body 10 by metal.
Like this, in this routine plunger 100, the ball fastening portion 32 that utilizes the outside the to become taper body 30 that prevents to advance and retreat is thrown off from main body 10, so, need not be provided for preventing the large-diameter portion of throwing off at advance and retreat body 30 from main body 10.Therefore, plunger 100 integral body can realize miniaturization radially.In addition, plunger 100 axially, become the structure that ball fastening portion 32 overlaps with the body fastening portion 14 that advances and retreat, so plunger 100 integral body also can realize axial shorteningization.
, a plurality of beads 40 at the end that are configured in the recess 31 of advance and retreat body 30 can make ball 50 rollably it be supported smoothly, but as at a plurality of beads 40 of full week configuration at the end of recess 31, then can form can anti-high load plunger 100.In addition,, get final product,, like this, can simplify the structure of plunger 100 integral body so bead 40 also can be 3 at 3 fulcrum balls 50 for freedom fulcrum ball 50 rollably.
In addition, in the occasion of this routine plunger 100, the through hole 33 of the accommodation section 12 be communicated to main body 10 was set at the end of the recess 31 of advance and retreat body 30.This through hole 33 is so-called " exhaust port ", through hole 33 is set by the end of recess 31 at advance and retreat body 30, not only can the accommodation section 12 of main body 10 be in communication with the outside by the gap of main body 10 and advance and retreat body 30, and can the accommodation section 12 of main body 10 be in communication with the outside by the gap of advance and retreat body 30 and ball 50.Therefore, when advance and retreat body 30 retreats with respect to main body 10, can make the air in the accommodation section 12 be discharged to the external world well.In addition, through hole 33 is set,, also ball 50 can be inserted into recess 31 smoothly even be that ball 50 closely contacts in the such form of the inner face of recess 31 by recess 31 at advance and retreat body 30.
Though the size of the through hole 33 of recess 31 can suitably be set, diameter is preferably formed as and is the diameter littler than the bead at the end that is configured in recess 31 40.This is because by making through hole 33 for the diameter littler than bead 40, when being encased in bead 40 recess 31 in, the danger that does not have bead 40 to fall from through hole 33 can be reduced at the operation of assembling in the advance and retreat body 30 when bead 40 and the ball 50.
＜form of implementation 2 〉
Fig. 2 represents another example of plunger 100.
This plunger 100 prevents to advance and retreat the structure that body 30 throws off with respect to main body 10 except following explanation, and other is with identical by the illustrative plunger of form of implementation 1 100.
In the occasion of this plunger 100, be provided with at radially outstanding lip part 34 at the rear end part of advance and retreat body 30, by advance and retreat body fastening portion this lip part 34 of 14 fastenings of the fore-end of being located at main body 10, thereby the body 30 that prevents to advance and retreat is thrown off from main body 10.
In the occasion of the plunger 100 of such structure, can make the forward end of advance and retreat body 30 outstanding bigger from main body 10, must be bigger with the advance and retreat travel settings of advance and retreat body 30.Therefore, can freely set the plunger 100 of the above backward travel of the radius of ball 50.
In addition, be the outer circumferential face of having implemented the high-precision diameter dimension of grinding by making from the outer circumferential face of the outstanding advance and retreat body 30 of main body 10, the high-precision location between the member that can also realize moving mutually.By member the hole of high-precision diameter dimension is set, makes advance and retreat body 30 be entrenched in this hole, thereby can carry out high-precision location in a side of ball 50 butts.
Claims (3)
1. a plunger is characterized in that: have main body cylindraceous, pressure spring, advance and retreat body, recess, a plurality of bead, reach ball;
This main body cylindraceous is provided with external screw thread at outer circumferential face;
This pressure spring is contained in the inside of this main body;
This advance and retreat body can freely be advanced and retreat and can not disengageably be assembled in the interior forward end side of aforementioned body, by above-mentioned pressure spring in the direction of advance application of force;
This recess is located at the forward end of this advance and retreat body;
These a plurality of beads are configured at the end of this recess;
This ball can freedom rollably be supported by this bead, and, so that the part of this ball can not be assembled in to pull-off above-mentioned recess from the outstanding mode of the front end of above-mentioned advance and retreat body.
2. plunger according to claim 1 is characterized in that:
Above-mentioned advance and retreat body has ball fastening portion at fore-end, and the outside of this ball fastening portion becomes the more little taper of past more front end diameter, makes that by this ball fastening portion above-mentioned ball can not pull-off,
Aforementioned body has the advance and retreat body fastening portion of the outside that is connected to above-mentioned ball fastening portion at fore-end, makes that by this advance and retreat body fastening portion above-mentioned advance and retreat body can not pull-off.
3. plunger according to claim 1 is characterized in that:
Above-mentioned advance and retreat body has at radially outstanding lip part at rear end part,
Aforementioned body has the advance and retreat body fastening portion that is connected to above-mentioned lip part at fore-end, makes the above-mentioned advance and retreat body can not pull-off by this advance and retreat body fastening portion.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009109754A JP2010255821A (en) | 2009-04-28 | 2009-04-28 | Plunger |
| JP2009-109754 | 2009-04-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101876372A true CN101876372A (en) | 2010-11-03 |
Family
ID=43018999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101580773A Pending CN101876372A (en) | 2009-04-28 | 2010-03-31 | Plunger |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2010255821A (en) |
| KR (1) | KR20100118505A (en) |
| CN (1) | CN101876372A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615454A (en) * | 2013-12-16 | 2014-03-05 | 上海昭程整流子科技有限公司 | Elastic deformation locating pin |
| CN110883528A (en) * | 2019-12-09 | 2020-03-17 | 横店集团英洛华电气有限公司 | Accurate positioning mechanism for station disc |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5654432B2 (en) * | 2011-10-21 | 2015-01-14 | 鍋屋バイテック株式会社 | Positioning device |
| JP7091045B2 (en) * | 2017-09-29 | 2022-06-27 | ダイハツ工業株式会社 | Rock ball holder |
| JP6638005B2 (en) * | 2018-02-13 | 2020-01-29 | 協永産業株式会社 | Insert member for penetrating wheel nut |
| KR102160783B1 (en) * | 2019-05-20 | 2020-09-29 | 신기산업 주식회사 | A clamp for vacuum pipe |
| KR200492938Y1 (en) * | 2019-05-20 | 2021-01-06 | 신기산업 주식회사 | Preventive structure clamp for vacuum pipe |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4241705A (en) * | 1978-07-27 | 1980-12-30 | Teledyne Industries, Inc. | Variable compression ratio piston |
| JPH11230336A (en) * | 1998-02-06 | 1999-08-27 | Koyo Seiko Co Ltd | Lock device and ball holder used therefor |
| JP2003239952A (en) * | 2002-02-12 | 2003-08-27 | Takai Corporation:Kk | Ball plunger with collar having ball rotating securely |
| JP2004278574A (en) * | 2003-03-13 | 2004-10-07 | Toyota Motor Corp | Lock ball device |
| JP2009085270A (en) * | 2007-09-28 | 2009-04-23 | Aisin Ai Co Ltd | Lock ball |
-
2009
- 2009-04-28 JP JP2009109754A patent/JP2010255821A/en active Pending
-
2010
- 2010-03-17 KR KR1020100023657A patent/KR20100118505A/en not_active Application Discontinuation
- 2010-03-31 CN CN2010101580773A patent/CN101876372A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4241705A (en) * | 1978-07-27 | 1980-12-30 | Teledyne Industries, Inc. | Variable compression ratio piston |
| JPH11230336A (en) * | 1998-02-06 | 1999-08-27 | Koyo Seiko Co Ltd | Lock device and ball holder used therefor |
| JP2003239952A (en) * | 2002-02-12 | 2003-08-27 | Takai Corporation:Kk | Ball plunger with collar having ball rotating securely |
| JP2004278574A (en) * | 2003-03-13 | 2004-10-07 | Toyota Motor Corp | Lock ball device |
| JP2009085270A (en) * | 2007-09-28 | 2009-04-23 | Aisin Ai Co Ltd | Lock ball |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615454A (en) * | 2013-12-16 | 2014-03-05 | 上海昭程整流子科技有限公司 | Elastic deformation locating pin |
| CN103615454B (en) * | 2013-12-16 | 2017-02-22 | 上海昭程整流子科技有限公司 | Elastic deformation locating pin |
| CN110883528A (en) * | 2019-12-09 | 2020-03-17 | 横店集团英洛华电气有限公司 | Accurate positioning mechanism for station disc |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2010255821A (en) | 2010-11-11 |
| KR20100118505A (en) | 2010-11-05 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20101103 |