KR101934296B1 - Magnetic Switch for Adjusting Over Travel - Google Patents
Magnetic Switch for Adjusting Over Travel Download PDFInfo
- Publication number
- KR101934296B1 KR101934296B1 KR1020150051872A KR20150051872A KR101934296B1 KR 101934296 B1 KR101934296 B1 KR 101934296B1 KR 1020150051872 A KR1020150051872 A KR 1020150051872A KR 20150051872 A KR20150051872 A KR 20150051872A KR 101934296 B1 KR101934296 B1 KR 101934296B1
- Authority
- KR
- South Korea
- Prior art keywords
- movable
- contact
- electromagnetic switch
- movable shaft
- shaft
- Prior art date
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/16—Magnetic circuit arrangements
- H01H50/18—Movable parts of magnetic circuits, e.g. armature
- H01H50/20—Movable parts of magnetic circuits, e.g. armature movable inside coil and substantially lengthwise with respect to axis thereof; movable coaxially with respect to coil
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
- H01H50/56—Contact spring sets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
- H01H50/56—Contact spring sets
- H01H50/58—Driving arrangements structurally associated therewith; Mounting of driving arrangements on armature
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H51/00—Electromagnetic relays
- H01H51/02—Non-polarised relays
- H01H51/04—Non-polarised relays with single armature; with single set of ganged armatures
- H01H51/06—Armature is movable between two limit positions of rest and is moved in one direction due to energisation of an electromagnet and after the electromagnet is de-energised is returned by energy stored during the movement in the first direction, e.g. by using a spring, by using a permanent magnet, by gravity
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Push-Button Switches (AREA)
Abstract
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic switch capable of overtravel control, and more particularly, to an electromagnetic switch capable of overtravel control by adjusting the length of a movable axis.
An electromagnetic switch capable of over travel adjustment according to an embodiment of the present invention includes a frame; A pair of fixed contacts fixedly coupled to the frame and connectable to an external power source or a load; A movable contact which is installed inside the frame so as to be linearly movable and can be brought into contact with or separated from the fixed contact; A fixed core disposed at a predetermined distance from the movable contact; An outer movable shaft slidably installed in the fixed core, the outer movable shaft including a hollow portion along a central axis and including a plurality of outer pinholes; An inner movable shaft slidably installed in the hollow portion, the inner movable shaft including a plurality of inner pin holes; And a shaft pin inserted into and coupled to one of the plurality of external pin holes and one of the plurality of internal pin holes.
Description
BACKGROUND OF THE
Generally, Magnetic Switch or Direct Current Relay is a type of electric circuit switching device that transmits mechanical signal and current signal using the principle of electromagnet. It is installed in various industrial equipments, machines and vehicles do. Particularly, the relays for electric vehicles are located in battery systems of electric vehicles such as hybrid cars, fuel cell cars, golf carts and electric forklifts, and serve to open and close the main current.
In addition, in an eco-friendly power generation system such as a photovoltaic power generation system and a wind power generation system, an electromagnetic switch for opening and closing a direct current power is provided between a direct current generator and an inverter for converting direct current power into direct current power of a commercial frequency and voltage, It also functions to supply or block the DC power to the inverter.
FIG. 1 is a longitudinal sectional view of an electromagnetic switch according to the prior art, and FIG. 2 is a partial detail view of the movable assembly in FIG. FIG. 3 is an exploded perspective view of FIG. 2. FIG.
1 to 3, the construction and manufacturing process of a moving assembly of an electromagnetic switch are as follows. The
The magnetic switch generates magnetic flux in the
What is important in such an electromagnetic switch is the contact pressure of the
At this time, if the distance between the
However, in the prior art, when the over travel (over travel distance) is not formed within the specification range and the contact pressure is in an excess or deficiency state, the entire product must be disposed of and the interval between the contact points There is a problem in that no configuration is provided to control this.
SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide an electromagnetic switch capable of overtravel control by adjusting the length of a movable shaft.
An electromagnetic switch capable of over travel adjustment according to an embodiment of the present invention includes a frame; A pair of fixed contacts fixedly coupled to the frame and connectable to an external power source or a load; A movable contact which is installed inside the frame so as to be linearly movable and can be brought into contact with or separated from the fixed contact; A fixed core disposed at a predetermined distance from the movable contact; An outer movable shaft slidably installed in the fixed core, the outer movable shaft including a hollow portion along a central axis and including a plurality of outer pinholes; An inner movable shaft slidably installed in the hollow portion, the inner movable shaft including a plurality of inner pin holes; And a shaft pin inserted into and coupled to one of the plurality of external pin holes and one of the plurality of internal pin holes.
Here, the interval between the internal pinholes is wider or narrower than the interval between the external pinholes.
Also, the interval between the inner pinholes and the interval between the outer pinholes are uniformly formed.
In addition, a movable contact mounting portion formed in a box shape having left and right openings is provided on the upper portion of the external movable shaft.
In addition, the movable contact is mounted on the upper surface of the movable contact mounting part so as to contact the movable contact, and a contact spring is provided between the movable contact and the lower surface of the movable contact mounting part.
Further, a plurality of annular ribs are formed on the outer peripheral surface of the outer movable shaft.
The inner movable shaft may include an upper body, an intermediate body, and a lower body, and the upper body and the lower body may have a smaller diameter than the middle body.
The movable core further includes a movable core provided at a lower portion of the fixed core, wherein the movable movable shaft can be inserted.
In addition, the middle portion of the lower body is formed with a step to which the upper surface of the movable core can be coupled.
In addition, a locking pad for supporting the inner movable shaft is provided at a lower portion of the movable core.
A circumferential groove is formed at a lower end of the inner movable shaft, and a protrusion that can be inserted into the circumferential groove is formed in the locking pad.
According to the electromagnetic switch capable of over travel adjustment according to an embodiment of the present invention, the amount of over travel of the electromagnetic switch can be adjusted by adjusting the length of the movable shaft. Accordingly, when an error of the contact pressure necessary for each product is generated, it can be corrected.
In addition, the contact pressure can be adjusted in response to malfunction or deterioration of parts.
In addition, it is possible to prevent the entire movable assembly from being discarded due to poor contact pressure.
1 is a longitudinal sectional view of an electromagnetic switch according to the prior art.
Figure 2 is a partial detail view of the movable assembly in Figure 1;
FIG. 3 is an exploded perspective view of FIG. 2. FIG.
4 is a longitudinal sectional view of an electromagnetic switch capable of over travel adjustment according to an embodiment of the present invention.
Figure 5 is a perspective view of the movable assembly in Figure 4;
FIG. 6 is an exploded perspective view of FIG. 5. FIG.
7 is an exploded perspective view of the movable shaft assembly shown in FIG.
8A, 8B, and 8C illustrate operation of an electromagnetic switch capable of overtravel control according to an embodiment of the present invention, in which shaft pins are coupled to an upper hole, an intermediate hole, and a lower hole, respectively.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, which are intended to illustrate the present invention in a manner that allows a person skilled in the art to easily carry out the invention. And does not mean that the technical idea and scope of the invention are limited.
4 is a longitudinal sectional view of an electromagnetic switch capable of over travel adjustment according to an embodiment of the present invention. Fig. 5 is a perspective view of the movable assembly in Fig. 4, Fig. 6 is an exploded perspective view of Fig. 5, and Fig. 7 is an exploded perspective view of the movable shaft assembly in Fig. An electromagnetic switch capable of over travel adjustment according to each embodiment of the present invention will be described in detail with reference to the drawings.
Referring to FIG. 4, an overview of the present invention will be described. Over travel O.T is defined as a distance obtained by subtracting a gap (Gap, G) from a stroke (S). Here, the stroke S is a distance between the
4 to 7, an electromagnetic switch capable of over travel adjustment according to an embodiment of the present invention includes a
The
Fixed
The
The fixed
The
A
The external
A plurality of
The upper portion of the external
The lower surface of the movable
On the upper surface of the movable
A plurality of
The inner movable shaft (40) is slidably mounted on the hollow portion (35) of the outer movable shaft (30). The inner
The
The
At this time, the interval between the plurality of
The
A
Shaft pins 50 are provided to connect and fix the
A
The
8A, 8B and 8C are diagrams illustrating an operation of an electromagnetic switch capable of overtravel control according to an embodiment of the present invention, wherein each shaft pin is an upper pin hole of an inner drive shaft and an outer pin hole of an outer drive shaft, And is coupled to the hole. Referring to FIG. 1 and FIGS. 8A, 8B and 8C, the operation of the electromagnetic switch capable of over travel adjustment according to an embodiment of the present invention will be described.
Here, the height difference between the
4 and 8A, the
8B shows a state in which the
8C shows a state in which the
The entire length of the
According to the electromagnetic switch capable of over travel adjustment according to an embodiment of the present invention, the amount of over travel of the electromagnetic switch can be adjusted by adjusting the length of the movable shaft. This makes it possible to compensate for differences in the contact pressure caused by component tolerances and assembly tolerances that may occur depending on the product, so that it is possible to reduce the operation error between the products and to perform appropriate blocking performance, thereby standardizing and standardizing the product .
In addition, the contact pressure can be adjusted in response to malfunction or deterioration of parts.
In addition, it is possible to prevent the entire movable assembly from being discarded due to poor contact pressure. This contributes to reduction of production cost and increase of production efficiency.
It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or essential characteristics thereof. Therefore, the embodiments disclosed in the present invention are not intended to limit the scope of the present invention but to limit the scope of the technical idea of the present invention. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.
10
15
17
20 fixed
22
25a
31a
32 movable contact mounting 33 rib
34
40 inner
41a
42
50
56
G Gap OT Travel
S stroke
Claims (11)
A pair of fixed contacts fixedly coupled to the frame and connectable to an external power source or a load;
A movable contact which is installed inside the frame so as to be linearly movable and can be brought into contact with or separated from the fixed contact;
A fixed core disposed at a predetermined distance from the movable contact;
An outer movable shaft slidably installed in the fixed core, the outer movable shaft including a hollow portion along a central axis and including a plurality of outer pinholes;
An inner movable shaft slidably installed in the hollow portion, the inner movable shaft including a plurality of inner pin holes; And
And a shaft pin inserted into and coupled to one of the plurality of external pin holes and one of the plurality of internal pin holes.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020150051872A KR101934296B1 (en) | 2015-04-13 | 2015-04-13 | Magnetic Switch for Adjusting Over Travel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020150051872A KR101934296B1 (en) | 2015-04-13 | 2015-04-13 | Magnetic Switch for Adjusting Over Travel |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20160121961A KR20160121961A (en) | 2016-10-21 |
KR101934296B1 true KR101934296B1 (en) | 2019-01-02 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1020150051872A KR101934296B1 (en) | 2015-04-13 | 2015-04-13 | Magnetic Switch for Adjusting Over Travel |
Country Status (1)
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KR (1) | KR101934296B1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102021866B1 (en) * | 2018-02-22 | 2019-09-17 | 엘에스산전 주식회사 | Booster of Permanent Magnetic Actuator |
KR102324514B1 (en) * | 2018-08-31 | 2021-11-10 | 엘에스일렉트릭 (주) | Direct Current Relay |
CN212161708U (en) * | 2020-02-26 | 2020-12-15 | 华为技术有限公司 | Contact device and electromagnetic switch |
KR102452354B1 (en) * | 2020-05-12 | 2022-10-07 | 엘에스일렉트릭(주) | Moving core part and DC relay include the same |
-
2015
- 2015-04-13 KR KR1020150051872A patent/KR101934296B1/en active IP Right Grant
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Publication number | Publication date |
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KR20160121961A (en) | 2016-10-21 |
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