CN106895131B - Sealing ventilation device and equipment comprising same - Google Patents

Sealing ventilation device and equipment comprising same Download PDF

Info

Publication number
CN106895131B
CN106895131B CN201510959419.4A CN201510959419A CN106895131B CN 106895131 B CN106895131 B CN 106895131B CN 201510959419 A CN201510959419 A CN 201510959419A CN 106895131 B CN106895131 B CN 106895131B
Authority
CN
China
Prior art keywords
sealing
vent
impact
guide portion
housing
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.)
Active
Application number
CN201510959419.4A
Other languages
Chinese (zh)
Other versions
CN106895131A (en
Inventor
杨红
宋春雷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bosch Power Tools China Co Ltd
Original Assignee
Bosch Power Tools China Co Ltd
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 Bosch Power Tools China Co Ltd filed Critical Bosch Power Tools China Co Ltd
Priority to CN201510959419.4A priority Critical patent/CN106895131B/en
Priority to DE102016224173.7A priority patent/DE102016224173A1/en
Priority to JP2016242542A priority patent/JP7066317B2/en
Publication of CN106895131A publication Critical patent/CN106895131A/en
Application granted granted Critical
Publication of CN106895131B publication Critical patent/CN106895131B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/064—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces the packing combining the sealing function with other functions
    • 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
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/027—Gearboxes; Mounting gearing therein characterised by means for venting gearboxes, e.g. air breathers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D11/00—Portable percussive tools with electromotor or other motor drive
    • B25D11/06—Means for driving the impulse member
    • B25D11/12—Means for driving the impulse member comprising a crank mechanism
    • B25D11/125—Means for driving the impulse member comprising a crank mechanism with a fluid cushion between the crank drive and the striking body
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/20—Devices for cleaning or cooling tool or work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/26—Lubricating
    • 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
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/185—Pressure equalising means between sealed chambers
    • 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
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H2057/02039—Gearboxes for particular applications
    • F16H2057/02069—Gearboxes for particular applications for industrial applications

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Gasket Seals (AREA)

Abstract

The invention relates to a sealing ventilation device and equipment comprising the same. The seal venting device includes: the sealing part is provided with a sealing surface and a non-sealing surface, wherein the sealing surface is used for providing sealing when the sealing part is installed at a part to be sealed, the non-sealing surface comprises at least two surfaces isolated by the sealing surface, and the at least two surfaces correspond to two spaces needing to be mutually ventilated; a vent guide portion extending at least one non-sealing surface of the sealing portion; and a vent hole penetrating through the sealing vent device, and two openings of the vent hole respectively communicating the two spaces to be ventilated with each other, wherein at least one opening is located on the ventilation guiding portion and away from the sealing portion. The invention can effectively improve the leakage of lubricating oil while providing ventilation so as to greatly prolong the service life of equipment.

Description

Sealing ventilation device and equipment comprising same
Technical Field
The invention relates to the technical field of structural sealing; more particularly, the present invention relates to a sealing device and further to an apparatus comprising the same.
Background
The seal is generally used for preventing leakage of fluid or solid particles from adjacent structures and preventing invasion of external impurities such as dust and moisture into parts inside the machine equipment, for example, the seal can be used for hole sealing, dust sealing and the like, and various common materials such as rubber, plastics and the like can be used as the material.
Fig. 1 shows a partial cross-sectional view of a prior art electric impact tool.
As can be seen from fig. 1, the electric impact tool comprises a gear housing 1 and an impact housing 2 which need to be ventilated with each other. In the gear housing 1, a change gear 3 is arranged, which is connected to a piston 5 via a connecting rod 4. In the impact case 2, an impact tube 6 and a cutter holding tube 7 are provided, a piston 5 and a hammer 8 are disposed in the impact tube 6, and a striker 9 and a cutter 10 are disposed in the cutter holding tube 7. An air channel 11 is formed between the gear housing 1 and/or the impingement housing 2 and the impingement tube 6 for achieving an air exchange between the gear housing 1 and the impingement housing 2 during an impingement operation. When the electric impact tool is operated, the motor drives the speed change gear device 3, which transmits a reciprocating movement to the piston 5 through the connecting rod 4, the piston 5 compresses air in the cavity 12 and effects an impact to the hammer 8, and the hammer 8 further impacts the striker 9 and the cutter 10 mounted in the striker.
Since the air passage 11 is provided between the gear housing 1 and the impingement housing 2, lubricating oil can easily flow from the gear housing 1 into the impingement housing 2 through the air passage 11. Since the reciprocating movement of the striker 9 during the impact is very frequent, the seal ring 14 thereon is rapidly worn, resulting in rapid leakage of the lubricating oil to the outside of the tool. The lack of lubrication oil in the gear housing 1 may cause the speed change gear 3 therein to wear more, the connecting rod 4 to fuse in a short time, and the seal ring 13 to wear more, eventually leading to failure of the power tool.
Since the air passage 11 is required for air exchange between the gear housing 1 and the impingement housing 2, the sealing device in the prior art cannot meet the requirement in solving the problem of leakage of lubricating oil at the air passage 11. It will be appreciated that similar problems with gas passages are unavoidable in other devices in other areas.
Disclosure of Invention
The invention aims to provide a sealing device capable of improving lubricating oil leakage and providing ventilation.
Further, it is an object of the invention to provide an apparatus comprising such a sealing device.
To achieve the foregoing object, a first aspect of the present invention provides a seal venting device comprising:
the sealing part is provided with a sealing surface and a non-sealing surface, wherein the sealing surface is used for providing sealing when the sealing part is installed at a part to be sealed, the non-sealing surface comprises at least two surfaces isolated by the sealing surface, and the at least two surfaces correspond to two spaces needing to be mutually ventilated;
a vent guide portion extending at least one non-sealing surface of the sealing portion; and
and a vent hole penetrating through the sealing vent device, and two openings of the vent hole respectively communicating the two spaces to be ventilated with each other, wherein at least one opening is located on the ventilation guiding portion and away from the sealing portion.
Optionally, in the sealed venting device as described above, at least one of the vent holes is passed through the vent guide portion.
Optionally, in the sealing vent as described above, the sealing portion is in the form of a closed loop, the sealing surfaces are an inner peripheral surface and an outer peripheral surface of the closed loop, and the non-sealing surface is a side surface of the closed loop.
Optionally, in a sealed venting device as described above, the venting guide portion is located at one side of the closed loop and extends therefrom.
Optionally, in the sealed venting device as described above, the venting guide portion passes through the sealing portion and protrudes out both sides of the closed loop, and both openings of the venting hole are located on the venting guide portion.
In order to achieve the object of the invention, a second aspect of the invention provides an apparatus having a sealing device as claimed in any one of the preceding first aspects.
Alternatively, the apparatus as described above is a power impact tool having a gear housing and an impact housing that need to be ventilated with each other, the gear housing having lubricating oil built therein, and the seal ventilation device being interposed between the gear housing and the impact housing and extending toward one side of the gear housing to form the ventilation guide portion.
Optionally, in the apparatus as described above, the sealing surface of the sealing portion is a close fit with the inner surface of the gear housing and/or the impingement shell and the outer surface of the impingement tube, respectively.
Optionally, in the apparatus as described above, the sealing portion is clamped between an end surface of the gear housing and an end surface of the impingement housing, and the sealing surface of the sealing portion is in close fit with an outer surface of the impingement tube and the end surfaces of the gear housing and the impingement housing, respectively.
Alternatively, in the apparatus as described above, the electric impact tool is an electric hammer or an electric pick.
Drawings
The present disclosure will become more apparent with reference to the accompanying drawings. It is to be understood that these drawings are solely for purposes of illustration and are not intended as a definition of the limits of the invention. In the figure:
FIG. 1 is a partial cross-sectional view of a prior art power impact tool;
FIG. 2 is a schematic perspective view of a sealed venting device according to one embodiment of the invention;
FIG. 3 is another angular perspective view of the seal vent of FIG. 2; and
fig. 4 is a schematic view of the assembly of the seal venting device of fig. 2 within a power impact tool.
Detailed Description
Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numerals designate like or corresponding technical features.
Fig. 2 is a schematic perspective view of a sealed venting device according to one embodiment of the invention. Fig. 3 is another angular perspective view of the seal vent of fig. 2. Such a sealing venting device is suitable for application in a power impact tool as shown in fig. 1 to produce a good sealing venting effect.
As can be seen from the figures, the sealing vent device 100 of the present embodiment includes a sealing portion 110, a vent guide portion 120, and a vent hole 130. It will be appreciated that the sealing portion 110 and the vent guide portion 120 may be integrally formed, or may be separately formed and then assembled together; through which the vent 130 extends.
In the illustrated example, the sealing portion 110 is in the form of a circular closed ring having an outer peripheral surface 111a, an inner peripheral surface 111b and side surfaces 112a, 112b. It will be appreciated that when installed in a power impact tool as in fig. 1, the outer and inner peripheral surfaces 111a, 111b of the closed ring may be used as sealing surfaces, which are respectively a close fit to the inner surface of the gear housing 1 and/or the impact housing 2 and the outer surface of the impact tube, preventing leakage of lubricating oil in the gear housing to the impact housing; the sides 112a, 112b of the closed ring then act as non-sealing surfaces, via which they are isolated. That is, in the seal-vent of the present invention, the sealing surfaces (e.g., the outer peripheral surface 111a and the inner peripheral surface 111 b) are used to provide sealing against undesired flow or leakage of lubricating oil or the like when the sealing portion 110 is mounted at a site to be sealed (e.g., an air passage of an electric impact tool); whereas the non-sealing surface in the present invention comprises two (or more) surfaces separated by a sealing surface, the two surfaces corresponding to two spaces that need to be vented to each other.
The sealing portion 110 in the present embodiment takes the form of a closed ring of the illustrated circular shape, in view of its annular shape and structural characteristics of the part to be sealed (i.e., the air passage of the electric impact tool in fig. 1). It will be appreciated by those skilled in the art that in different devices, the sealing portion may be adapted to take other shapes, such as oval, triangular, polygonal or irregularly shaped non-circular closed loops, when taking different shapes and configurations of the portion to be sealed; alternatively, for example, in the case where the air passage to be ventilated is not annular, it may take the form of an unclosed ring, such as, but not limited to, a circle, triangle, polygon, irregular shape, etc. without an intermediate hole. The cross section of the closed ring is quadrilateral in the figure; it will be appreciated that the cross-sectional shape may also be designed to be circular, oval, polygonal, irregular, or other suitable shape as desired. These will all fall within the scope of the present invention.
In the illustrated embodiment, the vent guide portion 120 is a straight cylindrical portion extending at the side 112a (which is a non-sealing surface of the sealed venting device 100) with straight vents extending therein. In the figure, the number of ventilation guide parts 120 is three. Of course, other numbers of ventilation guide portions, such as one, two or more, may be employed by those skilled in the art in light of the teachings of the present invention; the ventilation guide part 120 may be designed in a non-linear shape such as a curve. On the other hand, it is also conceivable for the person skilled in the art that the ventilation guide part can also be extended at the side face 112b, i.e. both side faces 112a, 112b can be extended with ventilation guide parts. The vent guide portion may be integrally formed on the sealing portion 110 or may be otherwise assembled on the sealing portion. In another example, the vent guide portion may also be made separately as a single piece and then formed through the sealing portion 110 with a tight fit through a hole on the non-sealing surface of the sealing portion 110. It can be seen that the vent guide portion 120 may protrude at the non-sealing surface of the sealing portion 110 in various manners according to the present invention, with the purpose of allowing the later-mentioned vent hole 130 to provide air exchange for the hermetically partitioned space while preventing the passage of lubricating oil; the specific shape of the ventilation guide portion 120 is not limited by the embodiment in the drawings.
The vent 130 passes through the sealed venting device 100. In the illustrated embodiment, the vent hole 130 passes through the vent guide portion 120 and through the sealing portion 110. A plurality of ventilation holes, such as but not limited to the two or four shown, may be passed through each ventilation guide portion. It goes without saying that only one vent hole may be passed in the vent guide portion; each ventilation guide section may have a different number of ventilation holes therein; the shape of the vent holes is not limited to the circular shape shown. One opening 131 of each vent hole 130 is located at an end of the vent guiding portion 120 remote from the sealing portion 110, and the other opening 132 is located on the other side 112b of the sealing portion 110 facing away from the vent guiding portion 120, i.e. on the other non-sealing surface of the sealing venting device 100, and the two openings 131, 132 of each vent hole 130 are located on different sides of the sealing surface, respectively, or the two openings 131, 132 of each vent hole 130 communicate with two spaces requiring mutual venting, i.e. in this embodiment the space within the gear housing and the space within the impingement housing, respectively. It will be appreciated that when the ventilation guide portions are provided on both sides of the sealing ventilation device 100, two openings of the ventilation hole may be provided on the two ventilation guide portions, respectively, or only one of the openings may be located on the guide portion and away from the sealing portion.
In summary, after the addition of the seal venting device according to the invention, the lubricating oil in the gear housing 1 will not easily flow through the air channel 11 into the impingement housing 2, so that the lubricating oil will not easily leak out of the tool. After the improvement, the wear of the speed change gear 3, the fusing of the connecting rod 4 and the wear of the sealing ring 13 on the piston 5 are improved, and the service life of the tool is greatly prolonged.
Fig. 4 is a schematic view of the assembly of the seal venting device of fig. 2 within a power impact tool.
Only the several components of the electric impact tool are shown in fig. 4, in particular the gear housing 1, the impact housing 2, the change gear device 3 and the assembled sealing venting device 100 according to the invention, which are to be ventilated with respect to each other, are shown similar to those in fig. 1. As is readily understood in connection with fig. 1, an air channel is formed between the impingement shell 2 and the impingement tube; in fig. 4, the seal venting device 100 may be disposed at the air passage, i.e., between the gear case and the impingement shell, and extend toward one side of the gear case as a venting guide portion, the sealing surfaces (i.e., the outer circumferential surface 111a and the inner circumferential surface 111 b) of the sealing portion 110 being respectively mated with the inner surface of the impingement shell and the outer surface of the impingement tube. When a technician uses the electric impact tool vertically downward or horizontally, the opening of the vent hole on the vent guide portion is higher than the surface of the lubricating oil, and therefore, the lubricating oil is not easily flowed into the impact shell through the vent hole; at the same time, the vent holes can ensure air exchange between the gear housing and the impact housing, thereby ensuring the function of the electric impact tool. It can be seen that the lubrication oil in the gear housing cannot easily flow into the impact housing through the sealing structure, so that the lubrication oil is not easily leaked from the electric impact tool, and thus, the wear of the speed change gear device, the wear of the sealing ring on the piston and the deterioration of other related components are improved, and the service life of the tool can be greatly prolonged.
Similarly, in the modified electric impact tool, it is possible to design the gear housing to extend long so as to form an air passage between the gear housing and the impact tube. At this time, the seal venting device 100 may be disposed at an air passage between the gear housing and the impact tube, i.e., the sealing surfaces (i.e., the outer circumferential surface 111a and the inner circumferential surface 111 b) of the seal venting device are closely fitted with the inner surface of the gear housing and the outer surface of the impact tube, respectively. Also, this design achieves the advantageous technical effects mentioned in the preceding paragraph.
In another embodiment, the seal venting device 100 may be assembled in another manner in the power impact tool shown in fig. 1. Specifically, the sealing portion 110 may be tightly seal-fitted with the outer surface of the impingement tube 8 and the end surfaces 2a, 2b of the impingement shell and gear shell, respectively. At this time, as shown in fig. 2 and 3, it is necessary to dispose the ventilation guide part 130 preferably close to the inner peripheral surface 111b of the sealing part 110, away from the outer peripheral surface 111a, at which time the end surface 2a of the impact case and the end surface 2b of the gear case clamp the sealing part, the side surface 112b of the sealing part 110 is tightly fitted to the end surface of the impact case, the side surface 112a is tightly fitted to the end surface of the gear case, and the inner peripheral surface 111b is tightly fitted to the outer surface of the impact tube, thereby preventing the flow of lubricating oil, but still allowing the air exchange. It will be appreciated that at this time, the sealing surface of the sealing portion 110 refers to a surface portion that closely mates with the outer surface of the impingement tube and the end surface of the impingement shell, respectively. Also, this design achieves the advantageous technical effects mentioned in the preceding paragraph.
In light of the above teachings of the present invention, one skilled in the art will recognize the application of such a seal vent to other desired devices to achieve a seal against liquids (not limited to lubricating oils) while allowing for the exchange of gases (not limited to air).
The technical scope of the present invention is not limited to the above description, and those skilled in the art may make various changes and modifications to the above-described embodiments without departing from the technical spirit of the present invention, and these changes and modifications should be included in the scope of the present invention.

Claims (10)

1. A seal venting device (100) for a power impact tool, the seal venting device (100) comprising:
a sealing portion (110), the sealing portion (110) having a sealing surface for providing a liquid seal between two spaces located on both sides of the sealing portion (110) when the sealing portion is mounted at a site to be sealed, and a non-sealing surface comprising at least two surfaces isolated by the sealing surface, the at least two surfaces corresponding to the two spaces requiring mutual ventilation;
-a venting guide portion (120), the venting guide portion (120) protruding at least one non-sealing surface of the sealing portion (110); and
a vent hole (130), the vent hole (130) passing through the sealed venting device (100), and two openings (131, 132) of the vent hole (130) respectively communicating with the two spaces to vent the two spaces to each other,
wherein the vent guide portion (120) protrudes from one non-sealing surface of the sealing portion (110), one opening (131) of the vent is located on the vent guide portion (120) and away from the sealing portion (110), and the other opening (132) of the vent is located on the other non-sealing surface of the sealing portion (110); or alternatively
The vent guide portion (120) protrudes from both non-sealing surfaces of the sealing portion (110), and two openings of the vent hole (130) are located at both ends of the vent guide portion (120).
2. The sealed venting device (100) of claim 1, wherein at least one of the vent holes is passed in the vent guide portion (120).
3. The seal venting device (100) of claim 1, wherein the sealing portion (110) is in the form of a closed loop, the sealing surfaces being an inner circumferential surface (111 b) and an outer circumferential surface (111 a) of the closed loop, the non-sealing surfaces being two sides (112 a) of the closed loop.
4. A sealing vent (100) as in claim 3, wherein the vent guide portion (120) is located at and extends from one side of the closed loop.
5. A sealing vent (100) as in claim 3, wherein the vent guide portion (120) passes through the sealing portion (110) and protrudes beyond both sides of the closed loop.
6. A power impact tool with a sealing device, characterized in that the sealing device is a sealing venting device (100) according to any one of claims 1 to 5.
7. The electric impact tool according to claim 6, wherein the electric impact tool has a gear housing and an impact housing requiring mutual ventilation, the gear housing having lubricating oil built therein, and the seal ventilation device (100) is interposed between the gear housing and the impact housing and extends toward one side of the gear housing to form the ventilation guide portion (120).
8. The electric impact tool according to claim 7, wherein the sealing surface of the sealing portion (110) is tightly fitted with the inner surface of the gear housing and/or the impact housing and the outer surface of the impact tube, respectively.
9. The electric impact tool according to claim 7, wherein the sealing portion (110) is clamped between an end surface of the gear housing and an end surface of the impact housing, and the sealing surface of the sealing portion is tightly fitted with an outer surface of the impact tube and the end surfaces of the gear housing and the impact housing, respectively.
10. The electric impact tool of claim 7, wherein the electric impact tool is an electric hammer or an electric pick.
CN201510959419.4A 2015-12-21 2015-12-21 Sealing ventilation device and equipment comprising same Active CN106895131B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201510959419.4A CN106895131B (en) 2015-12-21 2015-12-21 Sealing ventilation device and equipment comprising same
DE102016224173.7A DE102016224173A1 (en) 2015-12-21 2016-12-06 Sealing and ventilation device and the seal and ventilation device containing system
JP2016242542A JP7066317B2 (en) 2015-12-21 2016-12-14 Electric impact tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510959419.4A CN106895131B (en) 2015-12-21 2015-12-21 Sealing ventilation device and equipment comprising same

Publications (2)

Publication Number Publication Date
CN106895131A CN106895131A (en) 2017-06-27
CN106895131B true CN106895131B (en) 2024-01-23

Family

ID=58994594

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510959419.4A Active CN106895131B (en) 2015-12-21 2015-12-21 Sealing ventilation device and equipment comprising same

Country Status (3)

Country Link
JP (1) JP7066317B2 (en)
CN (1) CN106895131B (en)
DE (1) DE102016224173A1 (en)

Citations (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1015719A (en) * 1963-08-22 1966-01-05 Bosch Gmbh Robert Improvements in motor-driven hammers
US4243110A (en) * 1979-02-08 1981-01-06 Cooper Industries, Inc. Pneumatic percussion drill with exhaust cooling and lubrication of chuck end
CH663746A5 (en) * 1983-08-11 1988-01-15 Bosch Gmbh Robert DRILLING HAMMER.
US5220854A (en) * 1991-01-10 1993-06-22 Poclain Hydraulics Mechanism casing provided with particular venting devices
CN1197716A (en) * 1997-04-07 1998-11-04 希尔蒂股份公司 Drilling and/or punching apparatus
JP2002127044A (en) * 2000-10-20 2002-05-08 Hitachi Koki Co Ltd Motor-driven impact tool
CN1502436A (en) * 2002-11-20 2004-06-09 株式会社牧田 Percussion drill
JP2004351595A (en) * 2003-05-30 2004-12-16 Hitachi Koki Co Ltd Power tool
JP2006130593A (en) * 2004-11-05 2006-05-25 Hitachi Koki Co Ltd Power tool
CN101058153A (en) * 2002-09-13 2007-10-24 百得有限公司 Rotary tool
JP2008089070A (en) * 2006-09-30 2008-04-17 Aisin Ai Co Ltd Transmission equipped with output shaft seal device for vehicle
CN201099685Y (en) * 2007-09-28 2008-08-13 郑州安图绿科生物工程有限公司 Culture medium flat-plate simple divider
CN101306529A (en) * 2007-05-14 2008-11-19 株式会社牧田 Impact tool
CN101306530A (en) * 2007-05-14 2008-11-19 株式会社牧田 Impact tool
JP2008284655A (en) * 2007-05-18 2008-11-27 Hitachi Koki Co Ltd Power tool
CN201172204Y (en) * 2008-02-05 2008-12-31 胡振钱 Electric hammer adding with isolation mechanism
CN101537610A (en) * 2008-03-21 2009-09-23 株式会社牧田 Impact tool
CN101563121A (en) * 2006-11-06 2009-10-21 贝克顿.迪金森公司 Extravascular system venting
CN101595738A (en) * 2006-12-04 2009-12-02 自适应技术公司 Acoustic attenuation earmuff with isolated duplex shell structure
CN101648375A (en) * 2008-08-14 2010-02-17 苏州宝时得电动工具有限公司 Hammer drill type power tool
CN101737484A (en) * 2008-11-19 2010-06-16 裴红侠 Novel mechanical ventilation cap
CN101861485A (en) * 2007-11-20 2010-10-13 伊格尔工业股份有限公司 Mechanical seal and tandem seal
CN102672681A (en) * 2011-03-18 2012-09-19 株式会社牧田 Impact tool
CN102705489A (en) * 2012-06-13 2012-10-03 三一重工股份有限公司 Ventilation plug and vehicle axle with same
CN202527166U (en) * 2012-04-12 2012-11-14 山东创新药物研发有限公司 Closed mobile phase accommodating device for liquid chromatography
CN202964595U (en) * 2012-12-18 2013-06-05 李跃辉 Three-function electric hammer
DE102012203901A1 (en) * 2012-03-13 2013-09-19 Robert Bosch Gmbh Hand-held power tool device such as drilling and/or percussion hammer, comprises a transmission unit, a vent port, and a membrane module having a diaphragm which carries out partial air-permeable closing of the vent port
DE102012208885A1 (en) * 2012-05-25 2013-11-28 Robert Bosch Gmbh Rammer unit for e.g. drilling hammer, has control unit to control drive unit and/or pneumatic rammer, and operating mode sensor i.e. Hall sensor providing operating mode signal or idle mode signal to control unit
CN203792295U (en) * 2013-01-21 2014-08-27 株式会社牧田 Impact tool
CN104044802A (en) * 2014-07-03 2014-09-17 无锡市崇安区科技创业服务中心 Sealing bottle plug
CN205423778U (en) * 2015-12-21 2016-08-03 博世电动工具（中国）有限公司 Sealed air -breather reaches equipment including it

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS575042Y2 (en) * 1978-12-29 1982-01-30
JPH06142501A (en) * 1992-11-02 1994-05-24 Yoshihide Shibano Production of washing water
EP2130652B1 (en) * 2008-06-04 2011-09-14 AEG Electric Tools GmbH Electrical tool with gear ventilation
JP5560004B2 (en) * 2009-08-05 2014-07-23 株式会社マキタ Work tools

Patent Citations (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1015719A (en) * 1963-08-22 1966-01-05 Bosch Gmbh Robert Improvements in motor-driven hammers
US4243110A (en) * 1979-02-08 1981-01-06 Cooper Industries, Inc. Pneumatic percussion drill with exhaust cooling and lubrication of chuck end
CH663746A5 (en) * 1983-08-11 1988-01-15 Bosch Gmbh Robert DRILLING HAMMER.
US5220854A (en) * 1991-01-10 1993-06-22 Poclain Hydraulics Mechanism casing provided with particular venting devices
CN1197716A (en) * 1997-04-07 1998-11-04 希尔蒂股份公司 Drilling and/or punching apparatus
JP2002127044A (en) * 2000-10-20 2002-05-08 Hitachi Koki Co Ltd Motor-driven impact tool
CN101058153A (en) * 2002-09-13 2007-10-24 百得有限公司 Rotary tool
CN1502436A (en) * 2002-11-20 2004-06-09 株式会社牧田 Percussion drill
JP2004351595A (en) * 2003-05-30 2004-12-16 Hitachi Koki Co Ltd Power tool
JP2006130593A (en) * 2004-11-05 2006-05-25 Hitachi Koki Co Ltd Power tool
JP2008089070A (en) * 2006-09-30 2008-04-17 Aisin Ai Co Ltd Transmission equipped with output shaft seal device for vehicle
CN101563121A (en) * 2006-11-06 2009-10-21 贝克顿.迪金森公司 Extravascular system venting
CN101595738A (en) * 2006-12-04 2009-12-02 自适应技术公司 Acoustic attenuation earmuff with isolated duplex shell structure
CN101306529A (en) * 2007-05-14 2008-11-19 株式会社牧田 Impact tool
CN101306530A (en) * 2007-05-14 2008-11-19 株式会社牧田 Impact tool
JP2008284655A (en) * 2007-05-18 2008-11-27 Hitachi Koki Co Ltd Power tool
CN201099685Y (en) * 2007-09-28 2008-08-13 郑州安图绿科生物工程有限公司 Culture medium flat-plate simple divider
CN101861485A (en) * 2007-11-20 2010-10-13 伊格尔工业股份有限公司 Mechanical seal and tandem seal
CN201172204Y (en) * 2008-02-05 2008-12-31 胡振钱 Electric hammer adding with isolation mechanism
CN101537610A (en) * 2008-03-21 2009-09-23 株式会社牧田 Impact tool
CN101648375A (en) * 2008-08-14 2010-02-17 苏州宝时得电动工具有限公司 Hammer drill type power tool
CN101737484A (en) * 2008-11-19 2010-06-16 裴红侠 Novel mechanical ventilation cap
CN102672681A (en) * 2011-03-18 2012-09-19 株式会社牧田 Impact tool
DE102012203901A1 (en) * 2012-03-13 2013-09-19 Robert Bosch Gmbh Hand-held power tool device such as drilling and/or percussion hammer, comprises a transmission unit, a vent port, and a membrane module having a diaphragm which carries out partial air-permeable closing of the vent port
CN202527166U (en) * 2012-04-12 2012-11-14 山东创新药物研发有限公司 Closed mobile phase accommodating device for liquid chromatography
DE102012208885A1 (en) * 2012-05-25 2013-11-28 Robert Bosch Gmbh Rammer unit for e.g. drilling hammer, has control unit to control drive unit and/or pneumatic rammer, and operating mode sensor i.e. Hall sensor providing operating mode signal or idle mode signal to control unit
CN102705489A (en) * 2012-06-13 2012-10-03 三一重工股份有限公司 Ventilation plug and vehicle axle with same
CN202964595U (en) * 2012-12-18 2013-06-05 李跃辉 Three-function electric hammer
CN203792295U (en) * 2013-01-21 2014-08-27 株式会社牧田 Impact tool
CN104044802A (en) * 2014-07-03 2014-09-17 无锡市崇安区科技创业服务中心 Sealing bottle plug
CN205423778U (en) * 2015-12-21 2016-08-03 博世电动工具（中国）有限公司 Sealed air -breather reaches equipment including it

Also Published As

Publication number Publication date
JP7066317B2 (en) 2022-05-13
DE102016224173A1 (en) 2017-06-22
CN106895131A (en) 2017-06-27
JP2017113877A (en) 2017-06-29

Similar Documents

Publication Publication Date Title
EP3548230B1 (en) Sealing arrangement for use in robot joint
US9644778B2 (en) Device for work implementation without stopping flow, and method for work implementation without stopping flow
DK3006737T3 (en) Improved compressor
KR102352626B1 (en) Pneumatic fender and pneumatic fender mouthpiece
CA2688713A1 (en) Heat exchanger shell assembly and method of assembling
CN106895131B (en) Sealing ventilation device and equipment comprising same
CN103821962A (en) Noise reduction ball valve
JP2012255467A5 (en)
JP2017508117A5 (en)
CN210496847U (en) Centrifuge scraper seal structure
CN203730812U (en) Noise reduction ball valve
CN205559905U (en) Sealed breather valve
KR101672890B1 (en) 2 Liquid Separation Type Oil Seal Unit
CN101354038B (en) Novel non-leakage mechanical seal single-stage sliding valve vacuum pump
CN209195251U (en) Down-hole hammer damper
JP4644012B2 (en) transmission
CN104373628B (en) Four-way valve
CN203887821U (en) Hammering assembly for impact tool
KR101843077B1 (en) Air breather for vehicle
RU150612U1 (en) COMPRESSOR CYLINDER
CN216382038U (en) Pneumatic control assembly and impact cylinder
JP6837290B2 (en) Air actuator
CN106051280A (en) Pneumatic actuator with pneumatic cushioning function
US20150343616A1 (en) Hammering set for an impact tool
CN104874099B (en) Check valve

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant