CN106952778B - Hydraulic switch - Google Patents
Hydraulic switch Download PDFInfo
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- CN106952778B CN106952778B CN201710003914.7A CN201710003914A CN106952778B CN 106952778 B CN106952778 B CN 106952778B CN 201710003914 A CN201710003914 A CN 201710003914A CN 106952778 B CN106952778 B CN 106952778B
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- conductive member
- hydraulic switch
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
- H01H35/34—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by diaphragm
- H01H35/346—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by diaphragm in which the movable contact is formed or directly supported by the diaphragm
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Switches Operated By Changes In Physical Conditions (AREA)
- Control Of Transmission Device (AREA)
Abstract
The invention provides a hydraulic switch, comprising: a hollow housing (1); an oil introduction space (2) having an opening at one end and provided in the housing (1); a flexible conductive member (11) which is disposed on the other end side of the oil introduction space (2) and is deformed by a hydraulic pressure applied to the oil introduction space (2); an end member (12) disposed on the opposite side of the oil introduction space section (2) with the conductive member (11) therebetween, the end member (12) having a terminal (12a), the terminal (12a) being a contact portion that comes into contact with the conductive member (11) when the conductive member (11) is deformed by hydraulic pressure; an insulating member (13) which is disposed around the terminal (12a), supports the terminal member (12) in the housing (1), and which is in contact with the conductive member (11) when the conductive member (11) is deformed; and a projection (14) formed on an opposite surface (13a) of the insulating member (13) that is opposite the conductive member (11).
Description
Technical Field
The present invention relates to a hydraulic switch.
Background
A controller for controlling a transmission mechanism is provided in an automatic transmission of a vehicle. The controller controls the transmission mechanism by determining whether or not a predetermined amount of hydraulic pressure is generated in the transmission mechanism by the hydraulic switch. Conventionally, a contact type mechanical switch in which a contact of a pressure-receiving movable portion is composed of a metal spring called a diaphragm and a fixed contact has been used as the hydraulic switch.
Such a hydraulic switch is mounted on a control valve mechanism of a transmission, as shown in, for example, Japanese patent application laid-open No. Hei 2-98432 or Japanese patent application laid-open No. 2014-89832. Since the control valve mechanism is disposed in oil, the use environment of the hydraulic switch is in oil. When the high hydraulic pressure is controlled by the hydraulic pressure control, a large impact pressure or hydraulic vibration may occur. For example, in hydraulic control of a CVT, which is one of automatic transmissions, a large load is required AT the time of a preliminary shift, and therefore, a higher hydraulic pressure is required than in AT and DCT. The impact pressure and hydraulic vibration generated when controlling a high hydraulic pressure are also larger than those of AT and DCT, and may be 20MPa or more. Therefore, in the related art, a damping hole is provided in an oil passage of the hydraulic switch in order to attenuate the impact pressure and the hydraulic vibration.
However, although the shock pressure and the hydraulic vibration can be attenuated by providing the orifice in the oil passage of the hydraulic switch, there arises a problem in control that the responsiveness of the pressure is deteriorated. Therefore, a technique for taking measures against the impact pressure and the hydraulic vibration other than the damping hole is desired.
For example, fig. 9 to 12 are diagrams for explaining one example. As shown in fig. 9 to 12, in the hydraulic switch, a terminal 112 is provided so as to face a conductive disk 111, and a recess 110 is provided around the lower end of the terminal 112, but an excessive pressure may be applied to the disk 111 by an impact pressure or hydraulic vibration. In this case, as shown in fig. 11, the following problem occurs: the disk 111 is bent to enter the recess 110, and product performance is deteriorated due to plastic deformation, thereby decreasing reliability. Therefore, as a countermeasure, the following is considered: in the recess 110, a planar support member 113 is provided on the disk 111 side. Thus, even if an excessive pressure is applied to the disk 111, the support member 113 supports the disk 111 with a large area, and thus plastic deformation of the disk 111 can be prevented.
However, as described above, the hydraulic switch is used in an environment where oil contains foreign matter called contaminants such as metal powder and dust. Therefore, as shown in fig. 12, the following problems occur: in the configuration in which the support member 113 having a large area is present around the terminal 112, when foreign matter enters between the disc 111 and the flat surface of the support member 113, the disc 111 and the terminal 112 are in poor contact, and reliability is lowered.
Disclosure of Invention
The invention aims to provide a highly reliable hydraulic switch which can withstand impact pressure and hydraulic vibration, for example, and can suppress contact failure due to foreign matter.
The hydraulic switch according to an exemplary embodiment of the present invention is characterized by having the following configuration.
(1) A hollow housing.
(2) An oil introduction space portion opened at one end side is provided in the case.
(3) And a flexible conductive member disposed on the other end side of the oil introduction space portion and deformed by a hydraulic pressure applied to the oil introduction space portion.
(4) And an end member disposed on the opposite side of the oil introduction space portion with the conductive member interposed therebetween, the end member having a terminal that is a contact portion that comes into contact with the conductive member when the conductive member is deformed by a hydraulic pressure.
(5) And an insulating member disposed around the terminal and supporting the terminal member to the housing, the insulating member being in contact with the conductive member when the conductive member is deformed.
(6) And a projection formed on an opposite surface of the insulating member to the conductive member.
Effects of the invention
According to the exemplary embodiment of the present invention, even when an excessive impact pressure or hydraulic vibration is generated, the convex portion of the facing surface restricts the flexible conductive member by being supported, and therefore, plastic deformation of the flexible conductive member can be prevented. Further, even if foreign matter is present in the oil, the foreign matter enters the recess around the convex portion of the facing surface, and therefore, it is possible to suppress contact failure caused by the foreign matter entering the gap between the flexible conductive member and the terminal. Therefore, a highly reliable hydraulic switch that can withstand impact pressure and hydraulic vibration and can suppress contact failure due to foreign matter can be obtained.
The above and other elements, features, steps, features and advantages of the present invention will become further apparent from the following description of the embodiments with reference to the accompanying drawings.
Drawings
Fig. 1 is a sectional view of a hydraulic switch according to a first embodiment.
Fig. 2 is a partially enlarged view of the periphery of the contact portion in fig. 1.
Fig. 3 is a bottom view of the opposite side.
Fig. 4 is a circumferential partial sectional view at a lower end portion of the opposite face.
Fig. 5 is a partially enlarged cross-sectional view of the periphery of the contact portion of the hydraulic switch according to the modification of the first embodiment.
Fig. 6 is a bottom view of the facing surface according to the modification of the first embodiment.
Fig. 7 is a view showing a modification of the convex strip.
Fig. 8 is a view showing a modification of the convex strip.
Fig. 9 is a diagram for explaining a problem of the conventional technique, and shows a hydraulic switch in a non-pressure state.
Fig. 10 is a diagram for explaining a problem of the conventional technique, and shows a hydraulic switch at the time of pressurization.
Fig. 11 is a diagram for explaining a problem of the conventional technique, and shows a hydraulic switch at the time of an abnormal pressure.
Fig. 12 is a diagram for explaining a problem of the conventional technique, and shows a hydraulic switch in a non-pressure state.
Detailed Description
[1. first embodiment ]
[1.1 Structure ]
A first embodiment of the present invention will be described below with reference to fig. 1 to 4. In the present specification, the axis represents a central axis along the longitudinal direction of the oil introduction space portion, and when simply referred to as a circumferential direction or an axial direction, represents the circumferential direction of the central axis or the axial direction of the central axis. In the case of simply being referred to as a radial direction, a direction orthogonal to the central axis is indicated. One side in the axial direction is referred to as "up", and the other side is referred to as "down". The vertical direction is for convenience of explanation and does not necessarily coincide with the direction of gravity.
The hydraulic switch of the present embodiment includes a cylindrical hollow case 1 manufactured by cutting or casting a metal. In the housing 1, an oil introduction space 2 is provided axially below, and a switch housing 3 is provided axially above.
The oil introduction space 2 is a space for introducing oil provided to extend in one direction in the casing 1. The oil introduction space 2 is connected to a pipe of the hydraulic circuit at a lower end that opens outward of the hydraulic switch. Oil is introduced from the pipe into the oil introduction space 2. The cross section of the oil introduction space portion 2 in the direction orthogonal to the axis is circular. The upper end side of the oil introduction space portion 2 is expanded in a funnel shape so as to expand toward the switch housing portion 3. A male screw (not shown) used for connection to a pipe may be provided in a portion of the casing 1 outside the oil introduction space 2.
The switch housing portion 3 is a circular space having a larger inner diameter than the oil introduction space portion 2, and houses a member constituting a contact for switching on and off of the hydraulic switch as will be described later. The switch housing portion 3 is larger than the oil introduction space portion 2. Therefore, the shape of the case 1 provided around the switch housing portion 3 is larger in the radial direction than the case 1 outside the oil introduction space portion 2. Therefore, a step portion 5 is provided between the outlet portion of the oil introduction space portion 2 and the inner wall surface of the casing 1.
An annular groove 6 recessed downward is provided at a corner portion between the step portion 5 and an inner wall surface of the housing 1 constituting the switch housing portion 3. An annular seal 7 is fitted inside the annular groove 6. As the seal 7, an O-ring made of a material having elasticity such as rubber is used.
A disk-shaped flexible plate 8 is provided in the step portion 5 so as to close the opening of the oil introduction space portion 2 on the switch housing portion 3 side. The flexible board 8 is made of a heat-resistant polyimide resin having a thickness that can be elastically deformed, for example, a thickness of about 1 mm. The lower surface of the peripheral edge portion of the flexible plate member 8 is in contact with the seal member 7 fitted in the groove 6. A pressing ring 9 having a thickness equal to the depth of the switch housing portion 3 is provided on the upper surface of the peripheral edge portion of the flexible plate member 8. The depth here indicates the axial length.
The upper surface of the pressing ring 9 is fastened by a caulking portion 10 provided at an opening edge of the switch housing portion 3, and a bending pressure of the caulking portion 10 is transmitted to the flexible board 8 via the pressing ring 9, so that the lower surface of the flexible board 8 crushes the sealing material 7.
A plate-shaped, flexible, disk-shaped conductive member 11 is provided on the surface of the flexible plate member 8 on the switch housing portion 3 side. The conductive member 11 is disposed on the upper end side of the oil introduction space portion 2, and is deformed by the hydraulic pressure applied to the oil introduction space portion 2. The conductive member 11 is a metal disk, and aluminum, copper, iron, or the like can be used, but here, a disk made of stainless steel and having gold plating applied to the surface is used. The conductive member 11 is restricted in position by its peripheral edge portion upper surface contacting the lower surface of the pressing ring 9.
A metal terminal member 12 is fixed to the opposite side of the oil introduction space 2 with the switch housing 3, that is, the conductive member 11 interposed therebetween. The terminating member 12 is rod-shaped and is disposed on the central axis at a predetermined interval from the conductive member 11. The terminal fitting 12 is made of metal such as copper, iron, or aluminum. The terminal member 12 has: and a terminal 12a that is a contact portion that comes into contact with the conductive member 11 when the conductive member 11 is deformed by the hydraulic pressure. That is, the terminal 12a is provided at the lower end of the terminal member 12, here, the lower surface of the terminal member 12. The terminal 12a does not contact the conductive member 11 when no pressure load is applied, and the terminal 12a contacts the conductive member 11 by applying a predetermined pressure to the conductive member 11. In other words, the terminal member 12 and the conductive member 11 constitute a switch.
An insulating member 13 for supporting the terminal member 12 in the housing 1 is arranged around the terminal 12 a. The insulating member 13 is formed in a cylindrical shape, for example, by an insulator such as resin, and surrounds the periphery of the terminal 12 a. The insulating member 13 is supported in the case 1 by the presser ring 9. Thus, the fitting 12 is fixed inside the housing 1.
The lower surface of the insulating member 13 is an opposing surface 13a opposing the conductive member 11. Since the insulating member 13 is cylindrical, the facing surface 13a is an annular surface. A convex portion 14 protruding toward the conductive member 11 is formed on the facing surface 13 a. In the present embodiment, as shown in fig. 3, the convex portion 14 of the facing surface 13a is a plurality of convex portions 14a, and is provided radially on the facing surface 13a with the terminal 12a as a center. The intervals of the convex strips 14a become larger as they become farther from the terminals 12 a.
As shown in fig. 6, the projection 14 is tapered from its root portion to its tip portion. That is, the opposed surface 13a side as the base end is thick, and the distal end as the conductive member 11 side is thin, thereby forming a mountain shape. The tip of the projection 14 is located on the same plane as the terminal 12a, and when the conductive member 11 is deformed by the hydraulic pressure to contact the terminal 12a, the tip of the projection 14 also contacts the conductive member 11, thereby restricting the conductive member 11 from being excessively deformed by the hydraulic pressure. In other words, the insulating member 13 is a supporting member of the conductive member 11. The tip of the projection 14 may be provided at the top dead center position of the conductive member 11, and the axial position of the tip of the projection 14 is not limited as long as the tip contacts the conductive member 11.
As shown in fig. 2, a space 15 surrounded by the terminal 12a, the insulating member 13, and the conductive member 11 is provided above the conductive member 11. The space 15 is filled with oil. The insulating member 13 is provided with a hole 16 connecting the space 15 and the outside of the hydraulic switch, and oil flows through the hole 16 in accordance with the deformation of the conductive member 11.
[1.2 Effect ]
The operation of the first embodiment having the above-described configuration will be described. For convenience of explanation, the initial state is assumed to be a state in which the conductive member 11 is bent toward the oil introduction space portion 2 and is not in contact with the terminal 12a, as shown in fig. 1. The conductive member 11 is electrically connected to the ground, and outputs on information when it is not in contact with the terminal 12 a.
When oil is introduced from the hydraulic circuit and filled into the oil introduction space portion 2, hydraulic pressure is applied to the flexible plate member 8. The flexible board 8 is deformed by hydraulic pressure, and pressure is applied to the conductive member 11 disposed on the upper surface of the flexible board 8. When a predetermined pressure is applied to the conductive member 11, the conductive member 11 turns to the terminal 12 side and bends, and comes into contact with the terminal 12 a. By this contact, the conductive member 11 and the terminal member 12 are electrically conducted, the terminal member 12 is lowered to the ground, and the hydraulic switch outputs an off signal.
The conductive member 11 is deformed toward the terminal 12, but is in point contact or line contact with the convex portion 14 located around the terminal 12 a. That is, the convex portion 14 functions as a stopper. Here, since the convex portions 14 are provided radially on the facing surface 13a facing the conductive member 11, the conductive member 11 is supported over a wide range. In this way, even if the conductive member 11 is deformed, the conductive member 11 is supported by the convex portion 14, and therefore, even if excessive impact pressure and hydraulic vibration are generated, plastic deformation of the conductive member 11 can be prevented.
Further, the conductive member 11 is deformed toward the terminal member 12 side, so that the space 15 is contracted. Therefore, the oil filled in the space 15 flows to the outside of the hydraulic switch through the hole 16.
(1) The hydraulic switch of the present embodiment includes: a hollow housing 1; an oil introduction space 2 having an opening at one end thereof and provided in the casing 1; a flexible conductive member 11 disposed on the other end side of the oil introduction space portion 2 and deformed by a hydraulic pressure applied to the oil introduction space portion 2; an end member 12 disposed on the opposite side of the oil introduction space portion 2 with the conductive member 11 interposed therebetween, the end member 12 having a terminal 12a, the terminal 12a being a contact portion that comes into contact with the conductive member 11 when the conductive member 11 is deformed by hydraulic pressure; an insulating member 13 disposed around the terminal 12a and supporting the terminal 12 to the case 1, the insulating member 13 being in contact with the conductive member 11 when the conductive member 11 is deformed; and a projection 14 formed on the opposite surface 13a of the insulating member 13 that is opposite to the conductive member 11.
Thus, even if excessive impact pressure or hydraulic vibration is present, the protruding portion 14 of the opposing surface 13a restricts the conductive member 11 by being supported, and therefore, plastic deformation of the conductive member 11 due to excessive impact pressure or hydraulic vibration can be prevented. Further, even if foreign matter is present between the conductive member 11 and the insulating member 13, the foreign matter enters the recess around the convex portion 14 of the facing surface 13a, and therefore, it is possible to suppress contact failure caused by the foreign matter entering the gap between the conductive member 11 and the terminal 12 a. Therefore, a highly reliable hydraulic switch that can withstand impact pressure and hydraulic vibration and can suppress contact failure due to foreign matter can be obtained.
(2) The end portion of the convex portion 14 of the opposed surface 13a is thinner than the root portion. Even if foreign matter enters the conductive member 11, the end of the projection 14 is thin, and therefore the foreign matter can be suppressed from being caught between the projection 14 and the conductive member 11 by itself. Further, by forming the tip of the projection 14 to be thin, the recessed space around the projection 14 becomes large, and foreign matter is accommodated in the space, so that the foreign matter can be suppressed from being caught between the projection 14 of the facing surface 13a and the conductive member 11.
(3) The end of the projection 14 of the facing surface 13a is formed to be flush with the terminal 12 a. Accordingly, the conductive member 11 is in contact with the convex portion 14 of the facing surface 13a on the same plane as the terminal 12a, and therefore, the conductive member 11 can be prevented from being excessively deformed by the hydraulic pressure, and performance degradation due to plastic deformation of the conductive member 11 can be prevented.
(4) The convex portions 14 of the opposing surface 13a are convex strips 14a, and the intervals of the convex strips 14a expand as they become distant from the terminals 12 a. Thus, even if foreign matter enters under the terminal 12a, the foreign matter moves to a wide portion on the outside, and the foreign matter is less likely to exist under the terminal 12 a. Therefore, the reliability of the product can be further improved.
In particular, in the present embodiment, the insulating member 13 surrounds the periphery of the terminal 12a, and the facing surface 13a is an annular surface surrounding the periphery of the terminal 12 a. The convex portion 14 of the facing surface 13a is a plurality of convex portions 14a, and is provided radially on the facing surface 13a with the terminal 12a as a center. Therefore, even if foreign matter enters under the terminal 12a, the foreign matter moves outward along the convex strip 14a in any direction, and the foreign matter is less likely to exist under the terminal 12 a. That is, foreign matter present in the recesses between the convex strips 14a can be moved outward with the convex strips 14a as a guide.
Therefore, the reliability of the product can be further improved.
(5) The insulating member 13 surrounds the periphery of the terminal 12a, and a space 15 surrounded by the terminal 12a, the insulating member 13, and the conductive member 11 and filled with oil is provided above the conductive member 11. A hole 16 connecting the space 15 and the outside of the hydraulic switch is provided in the insulating member 13. Thus, even if the space 15 contracts with the deformation of the conductive member 11, the oil can flow to the outside in accordance with the deformation. Therefore, the conductive member 11 can be brought into contact with the terminal 12a without inhibiting the deformation of the conductive member 11, and the reliability can be improved.
[1-4 ] modifications of the first embodiment ]
(modification 1)
As shown in fig. 5 and 6, the convex portion 14 of modification 1 is formed of a protrusion 14 b. Here, the convex portion 14 is formed by radially providing a plurality of truncated cone-shaped protrusions 14b on the opposing surface 13a with the terminal 12a as the center at intervals, and the convex portion 14 is formed as a boss stopper structure. As a result, compared to the case where the convex strips 14a are arranged radially, the concave portions serving as gaps are present between the protrusions 14b, and accordingly, foreign matter can be easily discharged to the outside.
(modification 2)
As shown in fig. 7, the convex portion 14 of modification 2 is a spiral convex portion 14 a. In the first embodiment, the plurality of convex portions 14a are provided in a radial shape, and the intervals of the convex portions 14a are expanded as being distant from the terminal 12a, but by forming the convex portions in a spiral shape, even if there is one convex portion 14a, the intervals of the convex portions 14a can be expanded as being distant from the terminal 12 a.
(modification 3)
As shown in fig. 8, in the convex portion 14 of modification 3, a plurality of convex portions 14a are arranged symmetrically about the terminal 12 a. This also allows the pitch of the ridges 14a to expand as they move away from the terminals 12 a.
[2 ] other embodiments ]
The present invention is not limited to the above embodiments. The above embodiments are shown as examples, and can be implemented in various other ways. Various omissions, substitutions, and changes may be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention and in the equivalent scope thereof. An example thereof will be described below.
(1) The shape of the convex portion 14 of the facing surface 13a is not limited to the frustum shape shown in the above modification 1, and includes a gable roof shape in which the tip end is tapered; and a rounded roof shape with rounded ends and a dome shape.
(2) A recess may be formed in the lower surface of the terminal 12 facing the conductive member 11. The recess is a depression depressed upward in the axial direction. By providing the recess, even if foreign matter exists under the terminal 12a, the foreign matter can enter the recess, so that contact failure can be suppressed, and reliability as a product can be improved.
The concave portion may be provided radially on the lower surface of the terminal member 12 and may be expanded as being distant from the center of the terminal 12 a. Thus, even if foreign matter exists under the terminal 12a, the foreign matter can be discharged to the outside of the terminal 12a, and therefore, a contact failure can be further suppressed, and the reliability of the product can be improved.
(3) The facing surface 13a of the insulating member 13 may be not a flat surface but a curved surface. The facing surface 13a may be provided with the convex portion 14, may be provided with a plurality of holes, or may be formed in a lattice shape.
(4) The holes 16 may not be provided. When the hole 16 is provided, the shape thereof is not particularly limited as long as the space 15 is connected to the outside of the hydraulic switch.
Claims (8)
1. A hydraulic switch, comprising:
a hollow housing;
an oil introduction space portion having an opening at one end thereof and provided in the housing;
a flexible conductive member disposed on the other end side of the oil introduction space portion and deformed by a hydraulic pressure applied to the oil introduction space portion;
a terminal member that is disposed on the opposite side of the oil introduction space portion with the conductive member interposed therebetween, and that has a terminal that is a contact portion that comes into contact with the conductive member when the conductive member is deformed by hydraulic pressure; and
an insulating member disposed around the terminal and supporting the terminal member in the housing, the insulating member being in contact with the conductive member when the conductive member is deformed;
the insulating member includes: a plurality of protrusions formed on an opposite surface of the insulating member opposite to the conductive member and protruding toward the conductive member; and a concave portion formed between the adjacent convex portions,
the insulating member surrounds the circumference of the terminal,
an oil-filled space surrounded by the terminal, the insulating member, and the conductive member is provided on an upper portion of the conductive member,
the insulating member is provided with a hole connecting the space and the outside of the hydraulic switch.
2. The hydraulic switch of claim 1,
the end portions of the convex portions of the opposed faces are thinner than the root portions.
3. The hydraulic switch according to claim 1 or 2,
the end of the projection of the facing surface is located on the same plane as the terminal.
4. The hydraulic switch according to claim 1 or 2,
the convex part of the opposite surface is a convex strip,
the intervals of the convex strips become larger as the convex strips are far away from the terminals.
5. The hydraulic switch of claim 4,
the opposing surface is an annular surface surrounding the circumference of the terminal,
the convex part of the opposite surface is a plurality of convex strips, and is radially arranged on the opposite surface by taking the terminal as a center.
6. The hydraulic switch according to claim 1 or 2,
the opposing surface is an annular surface surrounding the circumference of the terminal,
the convex portion of the facing surface is formed by radially providing a plurality of truncated cone-shaped protrusions on the facing surface with a space therebetween and centering on the terminal.
7. The hydraulic switch according to claim 1 or 2,
a recess is formed on a lower surface of the terminating member that opposes the conductive member.
8. The hydraulic switch of claim 7,
the concave portion is provided radially on the lower surface and expands away from the center of the terminal.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016000892A JP6584962B2 (en) | 2016-01-06 | 2016-01-06 | Hydraulic switch |
| JP2016-000892 | 2016-01-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106952778A CN106952778A (en) | 2017-07-14 |
| CN106952778B true CN106952778B (en) | 2020-04-21 |
Family
ID=59306383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710003914.7A Expired - Fee Related CN106952778B (en) | 2016-01-06 | 2017-01-04 | Hydraulic switch |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6584962B2 (en) |
| CN (1) | CN106952778B (en) |
Citations (8)
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| GB1390173A (en) * | 1972-02-22 | 1975-04-09 | Vdo Schindling | Pressure switch |
| CN1282087A (en) * | 1999-07-27 | 2001-01-31 | 阿尔卑斯电气株式会社 | Press-button switch |
| JP2005209438A (en) * | 2004-01-21 | 2005-08-04 | Saginomiya Seisakusho Inc | Pressure switch and operation point adjusting method of the pressure switch |
| CN200993915Y (en) * | 2006-12-05 | 2007-12-19 | 达方电子股份有限公司 | Button structure |
| JP4943235B2 (en) * | 2007-06-04 | 2012-05-30 | 株式会社鷺宮製作所 | pressure switch |
| CN102610433A (en) * | 2012-03-09 | 2012-07-25 | 曲阜天博汽车零部件制造有限公司 | Oil pressure switch |
| WO2013092517A1 (en) * | 2011-12-19 | 2013-06-27 | Elettrotec S.R.L. | Modular mechanical pressure switch |
| JP2015220210A (en) * | 2014-05-21 | 2015-12-07 | トヨタ自動車株式会社 | Oil pressure switch |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9153400B2 (en) * | 2013-03-15 | 2015-10-06 | Kidde Technologies, Inc. | Pneumatic detector integrated alarm and fault switch |
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2016
- 2016-01-06 JP JP2016000892A patent/JP6584962B2/en not_active Expired - Fee Related
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2017
- 2017-01-04 CN CN201710003914.7A patent/CN106952778B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1390173A (en) * | 1972-02-22 | 1975-04-09 | Vdo Schindling | Pressure switch |
| CN1282087A (en) * | 1999-07-27 | 2001-01-31 | 阿尔卑斯电气株式会社 | Press-button switch |
| JP2005209438A (en) * | 2004-01-21 | 2005-08-04 | Saginomiya Seisakusho Inc | Pressure switch and operation point adjusting method of the pressure switch |
| CN200993915Y (en) * | 2006-12-05 | 2007-12-19 | 达方电子股份有限公司 | Button structure |
| JP4943235B2 (en) * | 2007-06-04 | 2012-05-30 | 株式会社鷺宮製作所 | pressure switch |
| WO2013092517A1 (en) * | 2011-12-19 | 2013-06-27 | Elettrotec S.R.L. | Modular mechanical pressure switch |
| CN102610433A (en) * | 2012-03-09 | 2012-07-25 | 曲阜天博汽车零部件制造有限公司 | Oil pressure switch |
| JP2015220210A (en) * | 2014-05-21 | 2015-12-07 | トヨタ自動車株式会社 | Oil pressure switch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106952778A (en) | 2017-07-14 |
| JP2017123242A (en) | 2017-07-13 |
| JP6584962B2 (en) | 2019-10-02 |
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