JP3152002U - Sealing plug and hydraulic device to which the sealing plug is attached - Google Patents

Sealing plug and hydraulic device to which the sealing plug is attached Download PDF

Info

Publication number
JP3152002U
JP3152002U JP2009001135U JP2009001135U JP3152002U JP 3152002 U JP3152002 U JP 3152002U JP 2009001135 U JP2009001135 U JP 2009001135U JP 2009001135 U JP2009001135 U JP 2009001135U JP 3152002 U JP3152002 U JP 3152002U
Authority
JP
Japan
Prior art keywords
sealing plug
plug
hydraulic
cylinder
passage
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.)
Expired - Lifetime
Application number
JP2009001135U
Other languages
Japanese (ja)
Inventor
西田 宏幸
宏幸 西田
Original Assignee
株式会社島津製作所
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 株式会社島津製作所 filed Critical 株式会社島津製作所
Priority to JP2009001135U priority Critical patent/JP3152002U/en
Application granted granted Critical
Publication of JP3152002U publication Critical patent/JP3152002U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Abstract

A sealing plug for discharging residual oil in a hydraulic device without dripping the device due to oil dripping. A plug in which a male screw 3 is provided on the outer periphery of a cylinder 2 closed at one end and a flange 4 having a larger diameter than the cylinder is integrally formed on the closed end side, and the outer diameter of the cylinder 2 is formed at the cylindrical portion of the flange 4. An annular cylindrical passage 5 is formed, a drain passage 7d is formed for communicating the annular cylindrical passage 5 and the inner cylinder 6 to the outside, and a plug 8 is provided at the external opening of the drain passage 7d. Further, a plurality of drain passages 7 are provided in the circumferential direction to minimize the positional deviation with respect to the direction of gravity when the plug is attached. [Selection] Figure 1

Description

  The present invention relates to a sealing plug that seals residual oil in a hydraulic device such as a hydraulic generator and a hydraulic drive device, and a hydraulic device to which the sealing plug is attached.
  It is very difficult and time-consuming to drain out the residual oil after the shipping test and trial operation of the hydraulic device. Therefore, it is usually shipped with an external leakage sealing plug attached to the external connection port of the apparatus while leaving some residual oil.
  Conventional sealing plugs used for the above purpose are as shown in FIGS. That is, the plug 61 inserted into the female screw 60 drilled in the external connection port of the hydraulic device or the male screw 62 corresponding to the female screw 60 is provided, and the plug is inserted between the flange 63 and the connection port end face 64 with the seal member 65 interposed therebetween. An example in which 66 is screwed into the female screw 60 is given.
  Alternatively, a porous shielding material is combined between the body with air holes and the lid with air holes, and is attached to the oil filler opening of the housing to form an air path communicating with the inside and outside of the housing. The shielding material vents the air path. There is also a plug that allows the air only to flow through (see Patent Document 1).
JP 2004-11697 A
  In the conventional plug, the hydraulic device is tilted during transportation, so that residual oil inside the hydraulic device accumulates in the vicinity of the sealing plug, leaks to the outside when the plug 61 or 66 is removed, and the hydraulic device is soiled by oil dripping. There was a problem that it took time and effort to clean again. The present invention provides a sealing plug that solves this problem.
  In order to solve such a problem, the present invention is a plug in which a male screw is provided on the outer periphery of a cylinder closed at one end, and a flange having a larger diameter than the cylinder is integrally formed on the closed end side. An annular cylindrical passage close to the outer diameter is formed, a drain passage that connects the annular cylindrical passage and the inner cylinder to the outside is formed, and a plug is provided at the external opening of the drain passage. Therefore, before removing the sealing plug attached to the hydraulic device, it is possible to remove residual oil by removing the plug provided at the drain passage external opening of the sealing plug.
  Furthermore, by providing a slit communicating with the annular cylindrical passage in the axial direction from the cylindrical end surface on the outer periphery of the male screw, the residual oil on the outer peripheral portion of the male screw can be quickly extracted.
  Further, by providing a plurality of the drain passages and slits in the circumferential direction, the displacement of the drain passages and the slits from the gravity direction due to the displacement of the threading start position when attaching the sealing plug to the hydraulic device is minimized. Can be suppressed.
  As for the hydraulic device, since the end surface corresponding to the flange surface of the sealing plug is formed, it is easy and reliable to attach a seal member or the like.
  In the present invention, when installing the hydraulic device at the transportation destination, remove the plug of the drain passage before removing the sealing plug, drain the residual oil collected near the sealing plug during transportation, and then remove the sealing plug. As a result, it is possible to eliminate the trouble of wiping off the dirt due to leakage without polluting the hydraulic system with oil dripping.
1 is a longitudinal sectional view of a sealing plug provided by the present invention. It is the front view which looked at the sealing plug which this invention provides from the screw direction. It is an attachment figure of the sealing plug which this invention provides. It is a longitudinal cross-sectional view of the sealing plug with a slit which this invention provides. It is the front view which looked at the sealing plug with a slit which this invention provides from the screw direction. It is an attachment figure of the sealing plug with a slit which this invention provides. It is a figure which shows the modification of the sealing method of the sealing plug which this invention provides. It is a figure which shows the longitudinal cross-section of a prior art example. It is a longitudinal cross-sectional view which shows a prior art example.
  The present invention is a plug in which a male screw is provided on the outer periphery of a cylinder closed at one end and a flange having a larger diameter than the cylinder is integrally formed on the closed end side, and an annular cylindrical passage close to the outer diameter of the cylinder at the cylindrical portion of the flange And forming a drain passage for communicating the annular cylindrical passage and the inner cylinder to the outside, providing a plug at the external opening of the drain passage, and communicating with the annular cylindrical passage in the axial direction from the cylindrical end surface on the outer periphery of the male screw. A slit is provided, and a plurality of the drain passages and slits are provided in the circumferential direction. Hereinafter, examples will be described.
  A first embodiment provided by the present invention is shown in FIGS. FIG. 1 is a longitudinal sectional view of the sealing plug 1, and FIG. 2 is a front view of the sealing plug 1 as viewed from the male screw 3 side. FIG. 3 is a view showing a part of the state in which the sealing plug 1 is attached to the hydraulic device 50, and will be described in detail with reference to FIGS.
  As shown in FIGS. 1 and 2, the sealing plug 1 of the present invention is provided with a male screw 3 on the outer periphery of a cylinder 2 whose one end is closed, and a flange 4 having a larger diameter than the cylinder 2 is integrally formed on the closed end side of the cylinder 2. It is a plug, and a drain passage that forms an annular cylindrical passage 5 close to the outer diameter of the cylinder 2 at the cylindrical portion of the flange 4 and communicates with the annular cylindrical passage 5 and the inner tube 6 from the outer periphery of the flange 4 inward. 2, specifically, as shown in FIGS. 2 and 3, four drain passages (indicated by reference numerals 7a, 7b, 7c, 7d and below 7 or 7a to 7d) are perforated, and the drain closest to the direction of gravity. It is a structure that can be provided with a plug 8 for closing the passage 7d.
  In the embodiment, as shown in FIG. 2, four drain passages 7 a to 7 d are provided in the circumferential direction. This is the processing start position of the male screw 3 of the sealing plug 1 when the sealing plug 1 is attached to the hydraulic device 50. This is to minimize the displacement of the drain passage 7 with respect to the gravity direction W due to the above. Therefore, the number of drain passages is not limited to four. Further, the drainage passages 7a, 7b, and 7c arranged upward from the gravity direction W are not provided with the plugs 8 and are opened to the atmosphere, so that the hydraulic device 50 can be vented.
  When the sealing plug 1 according to the present invention is attached to the hydraulic device 50, it is possible to prevent oil leakage by screwing the seal member 10 between the end surface 9 of the flange 4 and the external connection port end surface 52 of the hydraulic device 50. effective.
  Residual oil 11 in the vicinity of the sealing plug 1 is removed from the path through the inner cylinder 6 and the drain passage 7d (see the discharge path A) by pulling out the plug 8 as shown in FIG. 3, and the inner cylinder 6, the male thread 3 and the female thread 51. It is discharged to the outside through a path (see discharge path B) passing through the screw gap, the annular cylindrical path 5 and the drain path 7d.
  A second embodiment of the present invention is shown in FIGS. 4 is a longitudinal sectional view of the sealing plug 20, FIG. 5 is a front view of the sealing plug 20 as viewed from the male screw 3 side, and FIG. 6 is a view showing a state in which the sealing plug 20 is attached to the hydraulic device 50. In the present invention, as shown in FIGS. 4 and 5, the outer periphery of the male screw 3 is provided with slits 12 communicating with the annular cylindrical passage 5 in the axial direction from the cylindrical end surface 3a, and four slits (reference numerals 12a and 12b shown in FIGS. 5 and 6). , 12c, 12d or less, and 12 or 12a to 12d).
  In the embodiment, as shown in FIG. 5, four slits 12 a to 12 d are provided in the circumferential direction. This is to minimize the positional deviation of the slit 12 with respect to the gravity direction W. Therefore, the number of slits is not limited to four.
  In FIG. 6, the same components as those shown in FIG. 3 have the same functions as the components shown in FIG. 3, and detailed description thereof will be omitted. Residual oil 11 in the vicinity of the sealing plug 20 is removed from the path through the inner cylinder 6 and the drain passage 7d (see the discharge path A) by removing the plug 8 as shown in FIG. 6, and the inner cylinder 6, the male thread 3 and the female thread 51. Three routes: a screw gap, a route passing through the annular cylindrical passage 5 and the drain passage 7d (see the discharge route B), and a route passing through the inner cylinder 6, the slit 12, the annular cylindrical passage 5 and the drain passage 7d (see the discharge route C). Is discharged to the outside.
  The characteristics of the sealing plug provided by the present invention are as described in detail above, but the present invention is not limited to the above and illustrated examples, and various modifications can be given.
  For example, the cross-sectional shape of the slit 12 can be rectangular, semicircular, or V-shaped. 3 and 6 can also be held by digging a groove 13 in the end face 9 of the flange 4 as shown in FIG. The present invention includes all these modifications.
  The present invention can be implemented with a simple component configuration and manufacturing method, and is industrially applicable.
DESCRIPTION OF SYMBOLS 1 Sealing plug 2 Cylinder 3 Male thread 3a Cylindrical end surface 4 Flange 5 Annular cylindrical passage 6 Inner cylinder 7 Drain passage 7a Drain passage 7b Drain passage 7c Drain passage 7d Drain passage 8 Plug 9 End surface 10 Seal member 11 Residual oil 12 Slit 12a Slit 12b Slit 12c Slit 12d Slit 13 Groove 20 Sealing plug 50 Hydraulic device 51 Female screw 52 External connection port end face 60 Female screw 61 Plug 62 Male screw 63 Flange 64 Connection port end face 65 Seal member 66 Plug A Discharge path B Discharge path C Discharge path W Gravitational direction

Claims (4)

  1.   A plug in which a male screw for screwing into a hydraulic device is provided on the outer periphery of a cylinder whose one end is closed, and a flange having a larger diameter than that of the cylinder is integrally formed on the closed end side. A sealing plug characterized by forming an annular cylindrical passage close to, forming a drain passage for communicating the annular cylindrical passage and the inner cylinder to the outside, and providing a plug at an external opening of the drain passage.
  2.   The sealing plug according to claim 1, wherein a slit that communicates with an annular cylindrical passage in an axial direction from a cylindrical end surface is provided on an outer periphery of the male screw.
  3.   The sealing plug according to claim 1 or 2, wherein a plurality of the drain passages and slits are provided in a circumferential direction.
  4.   The connection port of the hydraulic apparatus to which the sealing plug according to claim 1 is attached is provided with an internal thread to which the sealing plug can be attached, and an end face corresponding to the flange surface of the sealing plug A hydraulic device characterized in that is formed.
JP2009001135U 2009-02-27 2009-02-27 Sealing plug and hydraulic device to which the sealing plug is attached Expired - Lifetime JP3152002U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009001135U JP3152002U (en) 2009-02-27 2009-02-27 Sealing plug and hydraulic device to which the sealing plug is attached

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2009001135U JP3152002U (en) 2009-02-27 2009-02-27 Sealing plug and hydraulic device to which the sealing plug is attached

Publications (1)

Publication Number Publication Date
JP3152002U true JP3152002U (en) 2009-07-16

Family

ID=54856354

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2009001135U Expired - Lifetime JP3152002U (en) 2009-02-27 2009-02-27 Sealing plug and hydraulic device to which the sealing plug is attached

Country Status (1)

Country Link
JP (1) JP3152002U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108506281A (en) * 2017-02-25 2018-09-07 天津移山工程机械有限公司 A kind of hydraulic unit matches deblocking technology

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108506281A (en) * 2017-02-25 2018-09-07 天津移山工程机械有限公司 A kind of hydraulic unit matches deblocking technology

Similar Documents

Publication Publication Date Title
JP5977877B2 (en) Oil filter assembly having a rotating discharge pin
US7408122B2 (en) Cable gland
CN102781541B (en) Filter
KR100794711B1 (en) Container and plug for container
US8410360B2 (en) Sealing structure for wire lead-out hole
JP5426646B2 (en) Fluid filter system
US9022663B2 (en) Oil-lubricated anti-friction bearing
US8469066B2 (en) Collapsible funnel
CN101360664A (en) Joint for fluid container
KR20140146157A (en) Adapter for pressure sensors
JP4794438B2 (en) Liquid tank mounting connector and liquid tank equipped with the same
EP3184864B1 (en) Sealing structure
KR101691556B1 (en) Oil filter assembly having drain pin improved combination structure
US10543436B2 (en) Filter assembly including an attachment member for a removable filter cartridge
ES2643124T3 (en) Connection terminal
RU2011133220A (en) Liquid high pressure vessel and its lining section
WO2007008294A8 (en) Sealing member for an entry port
WO2013061842A1 (en) Sealing device, and suspension device provided with said sealing device
US10343092B2 (en) Filter system and filter element having a sealing device
DE102012217030A1 (en) Bearing cover, in particular ABS sensor cap
CN106413841B (en) Filter cell and filter assemblies with end cap seal part
JP5771496B2 (en) discharge container
KR101303798B1 (en) A seal for a vessel filled with fluid
JP2011031921A (en) Spouting cap for double container, and double container having the spouting cap
RU2675425C2 (en) Gas turbine engine carter, gas turbine engine, carter cover and method of endoscopy and/or defectoscopy

Legal Events

Date Code Title Description
A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20090513

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120624

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130624

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130624

Year of fee payment: 4

EXPY Cancellation because of completion of term