CN209325029U - Fluid pressure device sealed plunger and the seal construction for using it - Google Patents
Fluid pressure device sealed plunger and the seal construction for using it Download PDFInfo
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- CN209325029U CN209325029U CN201821984478.2U CN201821984478U CN209325029U CN 209325029 U CN209325029 U CN 209325029U CN 201821984478 U CN201821984478 U CN 201821984478U CN 209325029 U CN209325029 U CN 209325029U
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Abstract
The utility model provides fluid pressure device sealed plunger and the seal construction using it, when the flow path opening portion of fluid pressure equipment is sealed, it can be ensured that more reliable leakproofness, and also versatility is also excellent.Fluid pressure device made of plunger body (2) is being covered in sealed plunger (1) as sealing element (S), plunger body is constituted and being folded in columned neck (5) between the screw head (6) that the direction axis (L) is formed with the external thread part (3) of external screw thread (4) and has the end face (7) for being recessed with tooling hole (7b), the diameter of neck is formed as into externally threaded bottom diameter or less, the flange surface that the cone cell of end face is extended to from the connecting pin (6a) with neck is formed in screw head, slave screw head that sealing element is continuously covered on to plunger body passes through on the outer peripheral surface until neck to external thread part.
Description
Technical field
The utility model relates to for be sealed in opened up on fluid pressure device such as flow path processing give up hole
The sealed plunger of flow path opening portion and the seal construction of the above-mentioned flow path opening portion using the sealed plunger.
Background technique
It is all the time, known when being sealed in the above-mentioned flow path opening portion opened up on fluid pressure device with plunger,
Be respectively formed internal screw thread and external screw thread on flow path opening portion and plunger, make these flow path opening portions internal screw thread and plunger it is outer
Screw thread therebetween sandwiched sealing element and mutually screw togather.
As its an example, Patent Document 1 discloses following contents: make surface be coated with sealing element plunger with it is above-mentioned
The flow path opening portion of fluid pressure device screws togather, as a result, the fastening position of sealed plunger and flow path opening portion.The plunger have from
Top is formed with the flange part of externally threaded external thread part and the cone cell connecting with the cardinal extremity of the external thread part to cardinal extremity, from this
The top of external thread part is coated to flange part by seal surface.Also, pass through the external thread part and above-mentioned flow path for making the plunger
The internal screw-thread screw of opening portion, and connect above-mentioned flange part and the peristoma portion for the flow path opening portion for being similarly formed as cone cell closely
Touching can seal the fastening position of these plungers Yu flow path opening portion using above-mentioned sealing element.
In addition, in the plunger documented by patent document 1, external screw thread throughout above-mentioned external thread part it is axial it is whole, i.e. from
The top of above-mentioned external thread part is integrally formed to the cardinal extremity connecting with above-mentioned flange part.Therefore, upper in order to be coated on surface
The sealing element for stating the flange part of plunger effectively plays a role and ensures the higher leakproofness of above-mentioned flow path opening portion, needs to make
The form of above-mentioned plunger and the form of flow path opening portion are mutually suitble to, to twist screwing togather above-mentioned plunger and the flow path opening portion
It is in close contact the flange part of the plunger just with the peristoma portion of flow path opening portion, lacks versatility.
[existing technical literature]
[patent document]
Patent document 1: Japanese Unexamined Patent Publication 2006-300109 bulletin
Utility model content
[the utility model project to be solved]
Therefore, the technical task of the utility model is, provides a kind of above-mentioned flow path opening in fluid pressure equipment
When portion is sealed, it can be ensured that more reliable leakproofness, and versatility also excellent fluid pressure device sealed plunger
And the seal construction of the above-mentioned flow path opening portion using the sealed plunger.
[a technical solution to solve project]
In order to solve the above problems, the utility model is a kind of fluid pressure device sealed plunger, for sealing fluid
Flow path opening portion in press device, which is characterized in that above-mentioned sealed plunger by by the integrally formed plunger body of metal and
It is covered in the outer peripheral surface of the plunger body and is used to seal close between the outer peripheral surface of the plunger body and above-mentioned flow path opening portion
Sealing is constituted, and above-mentioned plunger body is respectively provided with first end and second end in axial ends, and above-mentioned plunger body is by above-mentioned
First end configures top and has the external thread part of cardinal extremity, the neck connecting with the cardinal extremity of the external thread part in above-mentioned second end side
Portion and connect with above-mentioned second end side of the neck and above-mentioned second end configured with operation end face screw head shape
At, in above-mentioned external thread part, be formed with external screw thread from above-mentioned top to above-mentioned cardinal extremity, above-mentioned neck throughout it is entire it is axial have it is upper
State externally threaded bottom diameter diameter below, above-mentioned screw head has from the connecting pin connecting with above-mentioned neck towards above-mentioned second
The end surface side at end with the flange surface of linear expanding cone cell, above-mentioned sealing element be covered in above-mentioned plunger body from above-mentioned spiral shell
The entire outer peripheral surface that line head passes through the range of neck to external thread part.
In above-mentioned sealed plunger, it is preferred that the end face of above-mentioned screw head is formed as and rectangular flat of above-mentioned axis
Smooth face is recessed with the tooling hole operated for being inserted into tool around above-mentioned axis in the central portion.At this time, it is preferred that upper
It states and is covered with above-mentioned sealing element on the entire flange surface of screw head, it is further preferred that in the tooling hole of above-mentioned screw head
Inner peripheral surface does not cover above-mentioned sealing element, it is further preferred that, above-mentioned sealing element is not covered in the end face of above-mentioned screw head.Separately
Outside, the flange surface of above-mentioned screw head can also extend to the periphery of the end face of above-mentioned second end from above-mentioned connecting pin, in addition,
The end comprising the first end side including above-mentioned top of above-mentioned external thread part can also not cover above-mentioned sealing element.
Moreover, in above-mentioned sealed plunger, it is preferred that in above-mentioned axial direction, above-mentioned neck is integrally in constant straight
Diameter it is cylindric, it is further preferred that in above-mentioned axial direction, above-mentioned neck has above-mentioned externally threaded 1/2 pitch or more and 1 pitch
Length below.At this point, in above-mentioned axial direction, the length of above-mentioned neck can also be formed as the length of above-mentioned screw head with
Under.
In addition, in order to solve the above problems, the utility model is a kind of seal construction for having used above-mentioned sealed plunger,
Be characterized in that, above-mentioned flow path opening portion be formed with the flow path opening portion opening edge side have outer end internal thread part and from
The outer end of the internal thread part is towards the flange bearing face of the linearly expanding cone cell in above-mentioned opening edge side, in above-mentioned internal screw thread
Portion, the inboard from above-mentioned outer end towards above-mentioned flow path opening portion are formed with internal screw thread, the external thread part of above-mentioned sealed plunger it is outer
The internal screw-thread screw of screw thread and above-mentioned internal thread part, and in the axial direction, the neck configured in one piece of above-mentioned sealed plunger is in above-mentioned
In internal thread part, and it is covered in flange bearing of the sealing element relative to above-mentioned flow path opening portion of the flange surface of above-mentioned sealed plunger
Face is in close contact throughout complete cycle.
In above-mentioned seal construction, it is preferred that the axial length of above-mentioned internal thread part is formed as than above-mentioned external thread part
Axial length it is long.Moreover it is preferred that the end face of the screw head of above-mentioned sealed plunger is formed as and rectangular flat of axis
Face, in the axial direction, which, which is integrally provided in, is leaning on flow path than the opening edge with the consistent position of above-mentioned opening edge or configuration
The inboard position of opening portion, also, be formed as above-mentioned cone cell flange surface and flange bearing plane it is having the same relative to axis
Angle.
[effect of utility model]
As described above, in the present invention, by being formed with externally threaded external thread part and the flange with cone cell
Sandwiched has the neck of above-mentioned externally threaded bottom diameter diameter below to constitute the plunger of sealed plunger between the screw head in face
Ontology is covered with close on the entire outer peripheral surface until above-mentioned screw head is by neck to external thread part of the plunger body
Sealing.Therefore, the external thread part of sealed plunger and the internal thread part of flow path opening portion can be made to screw togather, until being covered with sealing element
Screw head flange surface and flow path opening portion flange bearing face be in close contact, before contiguity will not because external screw thread in
The relationship of screw thread and prevent to screw togather.
Therefore, according to the utility model, it is capable of providing the sealing element of a kind of sealing element by external thread part and flange surface,
It can ensure more reliable leakproofness between above-mentioned flow path opening portion and sealed plunger, and versatility also excellent fluid pressure
Power equipment sealed plunger and the seal construction for using it.Moreover, even if being covered in externally threaded sealing during screwing togather
Part peels off due to the sliding contact with internal screw thread, also it can be made to rest on above-mentioned neck, can prevent leakproofness from reducing.
Detailed description of the invention
Fig. 1 (a) be the sealed plunger of the utility model slave top surface side observation perspective view, (b) be plunger body from
The perspective view of top surface side observation.
Fig. 2 (a) be the sealed plunger of the utility model slave bottom surface side observation perspective view, (b) be plunger body from
The perspective view of bottom surface side observation.
Fig. 3 (a) is the main view of the sealed plunger of the utility model, is (b) main view of plunger body.
Fig. 4 (a) is the top view of the sealed plunger of the utility model, is (b) top view of plunger body.
Fig. 5 (a) is the bottom view of the sealed plunger of the utility model, is (b) bottom view of plunger body.
Fig. 6 is the A-A cross-sectional view in Fig. 3 (a) of the sealed plunger of the utility model.
Fig. 7 is the flow path opening portion for indicating for the sealed plunger of the utility model to be installed on fluid pressure device, by the stream
The cross-sectional view for the state that road opening portion airtightly seals.
Description of symbols
1, sealed plunger；2, plunger body；2a, first end；2b, second end；3, external thread part；3a, top；3b, cardinal extremity；
3c, top end part；4, external screw thread；5, neck；6, screw head；6a, connecting pin；7, end face；7a, circumferential rim；7b, tooling hole；8,
Flange surface；10, fluid pressure device；11, shell；12, flow path；13, flow path opening portion；13a, opening edge；14, internal thread part；
15, internal screw thread；16, flange bearing face；S, sealing element；L, axis；X, the direction the axis L length of neck 5；Y, the axis side L of screw head 6
To length；θ, end face 7 and 8 angulation of flange surface.
Specific embodiment
Hereinafter, an embodiment of the plunger of the utility model is described in detail using attached drawing.In addition, here, explanation incite somebody to action this
The sealed plunger of embodiment is mainly used in the case where air pressure equipment, and but not limited to this, can also apply to sky
The fluid pressure device of pressurised fluid flow other than gas.
As shown in fig. 7, the sealed plunger 1 of present embodiment is for example for being hermetically sealed within the shell of air pressure equipment 10
It is required when forming flow path 12 in body 11 to give up the opening portions such as hole (flow path opening portion) 13, by plunger body 2 and it is covered in this
The sealing element S of the outer peripheral surface of plunger body 2 is constituted, and the plunger body 2 is integrally formed by metals such as stainless steels.
The gap that above-mentioned sealing element S is used to will be formed between above-mentioned flow path opening portion 13 and sealed plunger 1 is airtightly close
Envelope, for example, it is preferable to use have using fluororesin as main component by compressive deformation occlude gap elasticity and with metal
The sealing element of the precoating stratotype of excellent adhesion.
As shown in Fig. 1~Fig. 6, above-mentioned plunger body 2 is integrally formed by external thread part 3, screw head 6 and neck 5, and
The direction axis L both ends are respectively provided with first end 2a and second end 2b, which is formed on the outer periphery external screw thread 4, the thread head
Portion 6 has the operation end face 7 for engaging for the rotations such as die nut tool (illustration omitted), which is located in this
Between a little external thread parts 3 and screw head 6, the two is connected with each other.
Above-mentioned external thread part 3 is respectively provided with top 3a at the direction axis L both ends and cardinal extremity 3b, above-mentioned top 3a are configured at above-mentioned
First end 2a, and above-mentioned neck 5 is connect with the cardinal extremity 3b of the side above-mentioned second end 2b.Also, above-mentioned the of above-mentioned screw head 6
The connecting pin 6a of one end side the 2a and above-mentioned second end 2b of neck 5 flanks conjunction, and the above-mentioned end face 7 of the screw head 6 configures
In above-mentioned second end 2b.
On the outer peripheral surface along axis L of above-mentioned external thread part 3, from its top 3a to cardinal extremity 3b (that is, spreading entire axis L
Direction) it is formed with external screw thread 4.As shown in Fig. 3 (b), the external screw thread 4 become connection thread top 4a, 4a ... straight line M with
And the parallel thread that the straight line N and axis L of bottom 4b, 4b ... of connection thread are parallel to each other.Moreover, the top of external thread part 3
3a is formed as and axis L flat surface at right angle.
Above-mentioned neck 5 is formed as throughout constant cylindric of the direction axis L integral diameter, and diameter is formed as external screw thread 4
Bottom diameter (diameter of bottom 4b) is hereinafter, be preferably formed into less than bottom diameter.In addition, the direction the axis L length X of the neck 5 is not special
It limits, is preferably formed into the 1/2 pitch P or more and 1 pitch P of above-mentioned external screw thread 4 hereinafter, and being formed as above-mentioned screw head 6
The direction axis L length Y or less.
Above-mentioned screw head 6 has 7 side of end face from the connecting pin 6a connecting with above-mentioned neck 5 towards above-mentioned second end 2b
The flange surface 8 of linearly expanding cone cell.Moreover, the above-mentioned end face 7 of the screw head 6 is formed as at right angle flat with axis L
Smooth face, these end faces 7 are mutually at acute angles theta with flange surface 8.Specifically, connecting pin 6a of the above-mentioned flange surface 8 from the side first end 2a
It is continuously extended to the circumferential rim 7a of the end face 7 of above-mentioned second end 2b, the screw head 6 is from its end face 7 to connecting pin 6a as a result,
Be formed as frustum of a cone (frustum of a cone) shape of linearly undergauge.Here, the diameter of above-mentioned end face 7 is formed larger than outside above-mentioned
Outer diameter (the top 4 of thread of screw thread 4aDiameter).In addition, end face 7 and 8 angulation θ of flange surface are in present embodiment
In for substantially 45 degree, but not limited to this.
Moreover, the center in the end face 7 of above-mentioned screw head 6 is recessed with tooling hole 7b along axis L.That is, by the way that work will be rotated
Tool insertion tooling hole 7b simultaneously engages around axis L and carries out rotation process, can be by the sealed plunger 1 relative to above-mentioned air pressure
It loads and unloads the flow path opening portion 13 of equipment 10.In addition, tooling hole 7b is to have bottom, and integrally surrounded by side wall around axis L,
In present embodiment, hexagon is shaped as with the cross section of axis L-orthogonal.But the cross-sectional shape of tooling hole 7b
It is not limited to hexagon, as long as the shape that rotation tool can be made to engage around axis L.In addition, in the present embodiment,
The depth in the direction axis L of tooling hole 7b is again formed as approximately half of left and right of the direction the axis L length of plunger body 2, but not
It is particularly limited to this.
Also, relative to the plunger body 2 having a structure in which, above-mentioned sealing element S is at least from above-mentioned screw head 6
In the range of reaching external thread part 3 by neck 5, is integrally covered throughout the outer peripheral surface around axis L, form continuous sealing element S's
Layer.More specifically it is illustrated, in the present embodiment, the flange surface 8 that above-mentioned sealing element S covers above-mentioned screw head 6 is whole,
The outer peripheral surface of above-mentioned neck 5 is whole and above-mentioned external thread part 3 slave cardinal extremity 3b, to away from above-mentioned top 3a, there are rule on the direction axis L
The external screw thread 4 of range until the position of measured length (preferably 1 pitch P or less) is whole, forms the thin of continuous sealing element S
Layer.At this point, as shown in fig. 6, and sealing element S is most it is preferred that above-mentioned sealing element S covers most thick in the bottom 4b of external screw thread 4
The height of the thread of the large thickness ratio external screw thread 4 is small.
In this way, 7 entirety of end face and tooling hole in the plunger body 2 of present embodiment, relative to above-mentioned screw head 6
The inner surface of 7b is whole and above-mentioned external thread part 3 in include above-mentioned top 3aTop end part 3c inside does not cover sealing integrally
Part S.Moreover, the surface of plunger body 2 is exposed in the range of not covered by these sealing elements S.But the covering of sealing element S
Range is not limited to such range, for example, both can be in the entire week other than the inner surface of the tooling hole 7b of plunger body 2
Face covers sealing element S, can also cover sealing element in the entire circumferential surface of the plunger body 2 including the inner surface comprising tooling hole 7b
S。
In addition, as described above, being, for example, that pneumatics valve or air pressure cause using the fluid pressure device 10 of the sealed plunger 1
The air pressure equipment that dynamic device etc. is acted using compressed air is formed on the shell 11 for making compressed air exist
The flow path 12 to circulate in the air pressure equipment 10.Also, when carrying out machining to such flow path 12, usually above-mentioned
It is opened up on shell 11 and gives up hole, but finally need airtightly to seal the flow path opening portion 13.Therefore, it is described in detail and is had according to Fig. 7
There is the sealed plunger 1 of above structure to the seal construction of the flow path opening portion 13 of above-mentioned air pressure equipment 10.
In the flow path opening portion 13 of above-mentioned flow path 12, it is formed with along axis L in the side opening edge 13a of the flow path opening portion 13
Internal thread part 14 with outer end 14a and the outer end 14a from the internal thread part 14 are towards the side above-mentioned opening edge 13a linearly to expand
The flange bearing plane 16 of the cone cell of diameter.Here, above-mentioned opening edge 13a is formed in the periphery of above-mentioned shell 11 and is formed as round.
In addition, in above-mentioned internal thread part 14, from the outer end 14a being connect with above-mentioned flange bearing plane 16 towards the inboard of flow path opening portion 13
It has been continuously formed internal screw thread 15.
Above-mentioned internal screw thread 15 have respectively with the pitch P of the external screw thread 4 of above-mentioned sealed plunger 1, the outer diameter (top of thread
The diameter of 4a) and the suitable pitch of bottom diameter (diameter of the bottom 4b of thread), bottom diameter (diameter of the bottom 15a of thread)
And internal diameter (diameter of the top 15b of thread).In addition, the direction axis L length (the i.e. axis of internal screw thread 15 of above-mentioned internal thread part 14
The direction L length) be formed as longer than the axial length (i.e. the axial length of external screw thread 4) of above-mentioned external thread part 3.
Above-mentioned flange bearing plane 16 is continuously extended to above-mentioned flow path opening portion 13 from the outer end 14a of above-mentioned internal thread part 14
Opening edge 13a, become flange surface 8 with above-mentioned sealed plunger 1 with the opening face angulation surrounded by opening edge 13a
Identical acute angle theta (being in the present embodiment substantially 45 degree).That is, the flange bearing plane 16 of the flow path opening portion 13 and above-mentioned close
The flange surface 8 for sealing plunger 1 has equal angular (being in the present embodiment substantially 45 degree) relative to axis L.Thereby, it is possible into one
Step increases the contact area of above-mentioned flange surface 8 and flange bearing plane 16, it is ensured that superior leakproofness.
In addition, the diameter of above-mentioned opening edge 13a is formed as bigger than the bottom diameter of above-mentioned internal screw thread 15, and consider above-mentioned sealing
The thickness of the sealing element S of plunger 1 is formed as more slightly larger than the diameter of the end face 7 of the sealed plunger 1.In addition, in present embodiment
In, the direction the axis L length in the flange bearing face 16 is formed as the direction the axis L length than the screw head 6 of above-mentioned sealed plunger 1
(i.e. the direction the axis L length of flange surface 8) Y, pitch P of screw thread is small, and but not limited to this.
Using above-mentioned sealed plunger 1 that the flow path opening portion 13 for the air pressure equipment 10 having a structure in which is airtight
When ground sealing occludes, which is inserted into from the side (that is, top 3a of external thread part 3) first end 2a of plunger body 2
Above-mentioned flow path opening portion 13.Then, the rotation tool such as die nut is inserted into tooling hole 7b, turns the sealed plunger 1 around axis L
It is dynamic, so that the external screw thread 4 of above-mentioned external thread part 3 and the internal screw thread 15 of above-mentioned internal thread part 14 be made to screw togather.
At this point, in the present embodiment, by being located in neck 5 between above-mentioned external thread part 3 and screw head 6 and structure
At the plunger body 2 of sealed plunger 1, the diameter of the neck 5 is formed as bottom diameter (the bottom 4b of external screw thread 4 throughout the direction entire axis L
Diameter) below (preferably smaller than base diameter).Therefore, during screwing togather, the neck 5 will not in flow path opening portion 13
The internal screw thread 15 of threaded portion 14 is interfered, as shown in fig. 7, the flange surface 8 for being covered with the screw head 6 of sealing element S can be screwed to
It is abutted with the flange bearing plane 16 of flow path opening portion 13.Also, at this point, being covered in the sealing of the flange surface 8 of above-mentioned sealed plunger 1
Part S spreads its complete cycle, and the flange bearing plane 16 along with flexible deformation relative to above-mentioned flow path opening portion 13 airtightly crimps.
That is, the sealing element S of the above-mentioned external thread part 3 in sealed plunger 1 and the sealing element S of above-mentioned flange surface 8 are pressed from both sides respectively
It is pressed between the internal screw thread 15 and above-mentioned flange bearing plane 16 of the above-mentioned internal thread part 14 of flow path opening portion 13, becomes along with elasticity
Shape and airtightly crimped relative to these internal screw threads 15 and flange bearing plane 16.As a result, in above-mentioned flow path opening portion 13 and sealing
Ensure more reliable leakproofness between plunger 1, can inhibit the compression in the flow path 12 of air pressure equipment 10 empty as much as possible
Gas escapes to outside by the flow path opening portion 13.Moreover, in the flange surface 8 of sealed plunger 1 and the flange of flow path opening portion 13
Before bearing plane 16 crimps, it will not cause to prevent to screw togather because of the relationship of external screw thread 4 and internal screw thread 15, therefore versatility is also excellent
It is different.
In addition, being covered in the close of the top side 3a of external thread part 3 when screwing togather external screw thread 4 and internal screw thread 15
Sealing S, it is longer with the length of 15 sliding contact of internal screw thread, therefore be easy to remove from plunger body 2.Moreover, the sealing removed
Part S with it is externally threaded rotation and to the side opening edge 13a of above-mentioned flow path opening portion 13 transport, if but its from opening edge 13a to
Outside discharge, it is likely that lead to the reduction of leakproofness.
But in the present embodiment, tight in the sealing element S and above-mentioned flange bearing plane 16 for being covered in above-mentioned flange surface 8
Under the state (that is, state that above-mentioned flow path opening portion 13 is sealed by sealed plunger 1) for touching touching, as shown in fig. 7, in the direction axis L
On, the neck 5 of above-mentioned sealed plunger 1 is integrally provided in above-mentioned internal thread part 14, and around axis L, in the outer of the neck 5
Gap is formed between circumferential surface and the inner peripheral surface of the internal screw thread 15.Even if the close of external screw thread 4 is covered in during screwing togather as a result,
Sealing S is peeled off because of the sliding contact with internal screw thread 15, so that it is rested on above-mentioned neck 5, to play as sealing
The function (that is, leakproofness) of part.As a result, it is possible to prevent the reduction of the leakproofness as caused by the removing of sealing element S, in addition to flange
Except sealing between face 8 and flange bearing plane 16, additionally it is possible to ensure more reliable leakproofness.
In addition, in the shape that sealed plunger 1 is installed on flow path opening portion 13 and airtightly seals the flow path opening portion 13
Under state, the whole opening edge with flow path opening portion 13 as shown in Figure 7 on the direction axis L in the end face 7 of preferably sealed plunger 1
13a is consistent, or is configured at the inboard than opening edge 13a slightly by flow path opening portion 13.
More than, to fluid pressure device sealed plunger involved in the utility model and use its seal construction
One embodiment is described in detail, but the utility model is not limited to above-mentioned embodiment, can not take off certainly
Various design alterations are carried out in the range of purport from utility model claims book.
Claims (14)
1. a kind of fluid pressure device sealed plunger, for the flow path opening portion in sealing-fluid pressure equipment, feature exists
In,
Above-mentioned sealed plunger is by by the integrally formed plunger body of metal and being covered in the outer peripheral surface of the plunger body and being used for
The sealing element sealed between the outer peripheral surface of the plunger body and above-mentioned flow path opening portion is constituted,
Above-mentioned plunger body is respectively provided with first end and second end in axial ends, and above-mentioned plunger body is by above-mentioned first end
Configuration top and above-mentioned second end side have the external thread part of cardinal extremity, the neck that is connect with the cardinal extremity of the external thread part and with
Above-mentioned second end side of the neck connects and the screw head in end face of the above-mentioned second end configured with operation is formed,
In above-mentioned external thread part, it is formed with external screw thread from above-mentioned top to above-mentioned cardinal extremity,
Above-mentioned neck axially has above-mentioned externally threaded bottom diameter diameter below throughout entire,
Above-mentioned screw head has from the connecting pin connecting with above-mentioned neck towards the end surface side of above-mentioned second end linearly to expand
The flange surface of the cone cell of diameter,
Above-mentioned sealing element is covered in the range from above-mentioned screw head by neck to external thread part in above-mentioned plunger body
Entire outer peripheral surface.
2. fluid pressure device sealed plunger according to claim 1, which is characterized in that
The end face of above-mentioned screw head is formed as the flat surface rectangular with above-mentioned axis, in the central portion, is recessed with around above-mentioned axis
The tooling hole operated for being inserted into tool.
3. fluid pressure device sealed plunger according to claim 2, which is characterized in that
Above-mentioned sealing element is covered on the entire flange surface of above-mentioned screw head.
4. fluid pressure device sealed plunger according to claim 3, which is characterized in that
Above-mentioned sealing element is not covered in the inner peripheral surface of the tooling hole of above-mentioned screw head.
5. fluid pressure device sealed plunger according to claim 4, which is characterized in that
Above-mentioned sealing element is not covered in the end face of above-mentioned screw head.
6. the fluid pressure device sealed plunger according to any one of claim 2~5, which is characterized in that
The flange surface of above-mentioned screw head extends to the periphery of the end face of above-mentioned second end from above-mentioned connecting pin.
7. fluid pressure device sealed plunger according to claim 2, which is characterized in that
The end of the first end side including above-mentioned external thread part is comprising above-mentioned top does not cover above-mentioned sealing element.
8. fluid pressure device sealed plunger according to claim 1, which is characterized in that
In above-mentioned axial direction, above-mentioned neck is integrally in the cylindric of constant diameter.
9. fluid pressure device sealed plunger according to claim 8, which is characterized in that
In above-mentioned axial direction, above-mentioned neck has above-mentioned externally threaded 1/2 pitch or more and 1 pitch length below.
10. fluid pressure device sealed plunger according to claim 8 or claim 9, which is characterized in that
In above-mentioned axial direction, the length of above-mentioned neck is formed as the length of above-mentioned screw head or less.
11. a kind of seal construction, it uses sealed plungers according to any one of claims 1 to 10, which is characterized in that
Above-mentioned flow path opening portion be formed with the flow path opening portion opening edge side have outer end internal thread part and from this it is interior
The outer end of threaded portion is towards the flange bearing face of the linearly expanding cone cell in above-mentioned opening edge side, in above-mentioned internal thread part, from
The inboard of above-mentioned outer end towards above-mentioned flow path opening portion is formed with internal screw thread,
The internal screw-thread screw of the external screw thread of the external thread part of above-mentioned sealed plunger and above-mentioned internal thread part, and in the axial direction, on
The neck configured in one piece of sealed plunger is stated in above-mentioned internal thread part, and is covered in the sealing element of the flange surface of above-mentioned sealed plunger
Flange bearing face relative to above-mentioned flow path opening portion is in close contact throughout complete cycle.
12. seal construction according to claim 11, which is characterized in that
The axial length of above-mentioned internal thread part is formed as longer than the axial length of above-mentioned external thread part.
13. seal construction according to claim 11, which is characterized in that
The end face of the screw head of above-mentioned sealed plunger is formed as the flat surface rectangular with axis, and in the axial direction, the end face is whole
Body configuration with the consistent position of above-mentioned opening edge or configuration in the inboard position than the opening edge by flow path opening portion.
14. seal construction according to claim 11, which is characterized in that
The flange surface and flange bearing plane for being formed as above-mentioned cone cell are relative to axis angle having the same.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-005438U | 2017-11-30 | ||
| JP2017005438U JP3214881U (en) | 2017-11-30 | 2017-11-30 | Seal plug for fluid pressure equipment and sealing structure using the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209325029U true CN209325029U (en) | 2019-08-30 |
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ID=61159771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821984478.2U Active CN209325029U (en) | 2017-11-30 | 2018-11-29 | Fluid pressure device sealed plunger and the seal construction for using it |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP3214881U (en) |
| CN (1) | CN209325029U (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102281979B1 (en) * | 2018-12-19 | 2021-07-27 | 주식회사 모트롤 | Plug for fluid blocking |
| KR102605218B1 (en) * | 2021-11-16 | 2023-11-24 | 주식회사 케이씨 | Gas Supply Apparatus |
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2017
- 2017-11-30 JP JP2017005438U patent/JP3214881U/en active Active
-
2018
- 2018-11-29 CN CN201821984478.2U patent/CN209325029U/en active Active
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| Publication number | Publication date |
|---|---|
| JP3214881U (en) | 2018-02-08 |
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