KR20120039268A - Apparatus for installing power relay assembly - Google Patents

Apparatus for installing power relay assembly Download PDF

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Publication number
KR20120039268A
KR20120039268A KR1020100100888A KR20100100888A KR20120039268A KR 20120039268 A KR20120039268 A KR 20120039268A KR 1020100100888 A KR1020100100888 A KR 1020100100888A KR 20100100888 A KR20100100888 A KR 20100100888A KR 20120039268 A KR20120039268 A KR 20120039268A
Authority
KR
South Korea
Prior art keywords
hole
pra
rubber bushing
holding part
mounting
Prior art date
Application number
KR1020100100888A
Other languages
Korean (ko)
Other versions
KR101142202B1 (en
Inventor
박지홍
양준혁
Original Assignee
엘에스산전 주식회사
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 엘에스산전 주식회사 filed Critical 엘에스산전 주식회사
Priority to KR1020100100888A priority Critical patent/KR101142202B1/en
Publication of KR20120039268A publication Critical patent/KR20120039268A/en
Application granted granted Critical
Publication of KR101142202B1 publication Critical patent/KR101142202B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/10—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for automatic control superimposed on human control to limit the acceleration of the vehicle, e.g. to prevent excessive motor current
    • B60L15/12—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for automatic control superimposed on human control to limit the acceleration of the vehicle, e.g. to prevent excessive motor current with circuits controlled by relays or contactors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H50/04—Mounting complete relay or separate parts of relay on a base or inside a case
    • H01H50/047—Details concerning mounting a relays
    • 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
    • H01H50/30—Mechanical arrangements for preventing or damping vibration or shock, e.g. by balancing of armature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers
    • H01H2009/0278—Casings containing special noise reduction means, e.g. elastic foam between inner and outer casing

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
  • Vibration Prevention Devices (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Springs (AREA)

Abstract

The present invention is a PRA mounting mechanism comprising a retaining portion formed in a mounting plate, a rubber bushing to receive the retaining portion and is fitted into a hole of a fixing portion of the PRA, and a fastening member coupled to the retaining portion to fix the PRA. The rubber bushing may include a first hole accommodating the holding part, a second hole formed to have a diameter larger than the first hole in the upper opening of the first hole, and accommodating the fastening member, and an upper opening of the first hole. It characterized in that it comprises an annular groove formed to fit around the hole of the fixing portion at a higher position.

Description

Apparatus for Installing Power Relay Assembly}

The present invention relates to a mounting apparatus for fixing a relay to a vehicle, and more particularly, to a relay mounting apparatus capable of preventing vibration and noise caused by the operation of the relay during vehicle operation.

The power relay assembly (PRA) is located between a large capacity high voltage battery used in an electric vehicle (EV) and a motor driving device, and is responsible for connecting the relay. Is configured. In motor drive devices, a very large capacitor is generally used. When the battery and the capacitor are directly connected, a very large current flows instantaneously, thus initially limiting the magnitude of the current to a resistor. In addition, when driving of the vehicle is completed, it also serves to release the connection between the motor drive device and the battery.

There is a need for a mounting apparatus for fixing such a PRA to a motor vehicle.

Referring to FIG. 1, a conventional PRA mounting apparatus includes a holding part 120 welded and fixed to a mounting plate 110 formed on a vehicle part or a vehicle body such as a battery pack, and the holding part 120. It is configured to include a rubber bushing 140 is fitted into the hole of the fixing unit 130, and a fastening member 150 for fixing the PRA.

The rubber bushing 140 has a hole 142 formed in the center for accommodating the holding part 120, and a mounting bushing 160, which is a steel material surrounding the holding part, is fitted in the central hole 145. In addition, an outer circumferential surface of the rubber bushing 140 is formed with an annular groove 144 is fitted into the hole of the fixing portion 130 of the PRA.

The conventional rubber bushing 140 configured as described above is installed as shown in FIG. 1, but is first inserted into the holding part 120 while the mounting bushing 160 is inserted into the central hole of the rubber bushing 140. As such, when the holding part 120 is fitted to the rubber bushing 140, the PRA fixing part 130 having an inner diameter of the annular groove 144 formed on the outer surface of the rubber bushing 10 is smaller than the annular groove 144. Insert into the hole of) and join.

On the other hand, the length of the rubber bushing 140 is formed to be shorter than the length of the holding portion 120, so that the upper portion 125 of the holding portion 120 protrudes over the upper opening 146 of the rubber bushing 140. . Therefore, the upper part 125 of the protruding holding part 120 and the fastening member 150 are screwed to mount the fixing part 130 of the PRA to the mounting plate 110.

However, in the conventional PRA mounting apparatus, the rubber bushing 140 is compressed by screwing the upper part 125 of the holding part 120 and the fastening member 150. The compressed high bushing 140 not only weakens the elastic force but also absorbs vibration and noise, and transmits it. Therefore, the noise and vibration by the PRA operation is transmitted to the holding unit 120 through the compressed rubber bushing 140, and the noise and vibration transmitted to the holding unit 120 are transferred to the entire vehicle through the mounting plate 110. There is a problem that is delivered to.

Accordingly, the present invention provides a PRA mounting apparatus that prevents noise and vibration generated by PRA operation from being transmitted to a vehicle.

The present invention provides a PRA mounting device that prevents the portion of the rubber bushing that fits and fits into the hole of the PRA fixture.

The present invention provides a PRA mounting device that facilitates engagement of a rubber bushing with a PRA fixture.

The present invention provides a PRA mounting apparatus capable of stably mounting the PRA to a mounting plate.

PRA mounting mechanism according to a preferred embodiment of the present invention is a retaining portion formed in the mounting plate, a rubber bushing to be accommodated and fitted into the hole of the fixing portion of the PRA coupled to the holding portion, fastening coupled to the holding portion to secure the PRA In the PRA mounting mechanism comprising a member, the rubber bushing is formed to have a first hole for receiving the holding portion and a diameter larger than the first hole in the upper opening of the first hole and to receive the fastening member And an annular groove formed so as to sandwich the hole circumference of the fixing portion at an outer circumferential surface of the second hole and a position higher than the upper opening of the first hole.

The holding part according to a preferred embodiment of the present invention is a stud bolt, and the fastening member is characterized in that the nut.

The first hole according to a preferred embodiment of the present invention is characterized in that the mounting bushing surrounding the holding portion is inserted.

The upper edge of the rubber bushing according to a preferred embodiment of the present invention is characterized in that the inclined portion is narrowed toward the top.

The lower circumference of the holding part according to the preferred embodiment of the present invention has a stepped portion having a larger diameter than the upper circumference, and a stepped groove is formed in the first hole to accommodate the stepped portion.

The present invention is to form an annular groove formed to fit around the hole of the PRA fixing portion in the rubber bushing, so that the position is higher than the upper opening of the first hole for receiving the holding portion, it is fitted into the hole of the PRA fixing portion Compression of the rubber bush of the part can be prevented. Thus, the uncompressed rubber bushing has the advantage of absorbing noise and vibration generated by the PRA operation so that it is not transmitted to the vehicle.

In addition, the present invention has the advantage that it is easy to fit the PRA fixing portion to the rubber bushing by forming an inclined portion that becomes narrower toward the top at the upper edge of the rubber bushing.

In addition, the present invention has the advantage that the PRA is stably mounted to the mounting plate by forming a stepped portion having a diameter larger than the upper circumference of the lower circumference of the holding portion.

1 is a cross-sectional view showing an installation state of a PRA mounting apparatus according to the prior art.
2 is an exploded perspective view of a PRA mounting apparatus according to a preferred embodiment of the present invention.
3 is a cross-sectional view of a state in which a fixing rubber bushing according to an embodiment of the present invention is installed.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout.

In the following description of the present invention, when it is determined that detailed descriptions of related known functions or configurations may unnecessarily obscure the gist of the embodiments of the present invention, the detailed description thereof will be omitted.

In addition, terms used in the present invention are terms used in consideration of functions in the embodiments of the present invention, and may be sufficiently modified according to the intention, custom, etc. of a user or an operator, and the definitions of these terms are defined in the specification of the present invention. It should be based on the content throughout.

2 is an exploded perspective view of a PRA mounting apparatus according to a preferred embodiment of the present invention, Figure 3 is a cross-sectional view of a state installed a PRA mounting apparatus according to a preferred embodiment of the present invention.

According to an embodiment of the present invention, a PRA mounting apparatus includes a holder 220 which is welded and fixed to a mounting plate 210 formed on a vehicle component or a vehicle body such as a battery pack, and accommodates the holder 220. It is configured to include a rubber bushing 240 is fitted into the hole of the fixing portion 230, and a fastening member 250 for fixing the PRA.

The rubber bushing 240 has holes 242a and 242b formed in the center for accommodating the holding part 220. Two holes having different diameters are formed according to the exemplary embodiment of the present invention. That is, the first hole 242a which penetrates the center of the rubber bushing 240 and is located at the bottom thereof is for accommodating the holding part 220. In addition, the second hole 242b formed in the upper opening 246 of the first hole 242a is for accommodating the fastening member 240 for screwing with the holding part 220. It is formed to have a diameter larger than the hole 242a. That is, the reason why the second hole 242b has a larger diameter than the first hole 242a is to secure a space for accommodating the fastening member 240 and a tool use space for engaging the fastening member 250. .

In addition, the rubber bushing 240 is formed on the outer peripheral surface of the annular groove 244 to be fitted into the hole of the fixing portion 230 of the PRA is formed, according to an embodiment of the present invention, the annular groove 244 is the first It is formed at a position higher than the upper opening 246 of one hole 242a. The reason for forming the annular groove 244 above the upper opening 246 of the second hole 242a is to prevent the rubber bushing 240 in the region where the annular groove 244 is located from being compressed. to be.

On the other hand, the upper edge of the rubber bushing 240 is formed with an inclined portion 248 that narrows toward the top. This is to facilitate fitting the holes of the PRA fixing portion 230 into the annular groove 244.

The holding part 220 is formed of a so-called stud bolt, and one end of the stud bolt is vertically welded to the mounting plate 210. In addition, the other end of the stud bolt may be formed by a screw. According to an exemplary embodiment of the present invention, the holding part 220 may have a length shorter than that of the conventional one so as to correspond to the first hole 242a of the rubber bushing 240.

In addition, the lower circumference of the holding part 220 is formed with a stepped portion 225 having a larger diameter than the upper circumference. Accordingly, a stepped groove 249 is formed in the first hole 242a of the rubber bushing 240 to accommodate the stepped portion 228. This is to strengthen the contact force between the holding unit 220 and the mounting plate 210, so that the PRA fixing unit 230 is more stably mounted to the mounting plate 210.

In addition, the fastening element 250 is formed in the shape of a nut, the internal screw of the nut corresponds to the screw of the holding portion 220. Although not shown in the figure, the support side of the fastening element 250 may be supplemented by a support means such as, for example, a washer or a toothed lock washer.

In addition, the PRA mounting device according to the present invention is formed of a double bushing (double bushing), the mounting bushing 260, which is an inner sleeve, is inserted into the first hole 242a of the rubber bushing 240, which is an outer sleeve. . The mounting bushing 260 includes a hole, the inner width of the hole being greater than the working clearance than the cross section of the retaining portion 242 in the region of the screw. That is, the mounting bushing 260 is to prevent the circumference of the first hole 242a of the rubber bushing by the screw area of the holding portion 220 according to the PRA operation vibration transmitted through the PRA fixing portion 230. For the purpose, it may be formed of a steel material. In addition, according to an embodiment of the present disclosure, the length of the mounting bushing 260 may be formed as the length of the first hole 242a.

The rubber bushing 240 according to the present invention configured as described above is installed as shown in FIGS. 2 and 3, but is first maintained in a state in which the mounting bushing 260 is inserted into the first hole 242a of the rubber bushing 240. It is inserted into the unit 220. Then, the rubber bushing 240 whose inner width is larger than the cross section of the holding portion 220 is placed on the mounting plate 210 with the end face.

As such, when the holding part 220 is fitted to the rubber bushing 240, the upper part 225 of the holding part 220 protruding above the upper opening 246 of the first hole 242a of the rubber bushing 240. The fastening member 250 is inserted into and screwed until it contacts the upper opening 246 of the first hole 242a. As a result, the rubber bushing 240 is fixed to the mounting plate 110. At this time, only the rubber bushing 240a corresponding to the circumferential region of the first hole 242a is compressed, and the rubber bushing 240b corresponding to the circumferential region of the second hole 242b is not compressed.

The annular groove 244 formed on the outer circumferential surface of the circumferential region of the second hole 242b is fitted into the hole of the PRA fixing portion 230 having an inner diameter smaller than that of the annular groove 244.

Then, the vibration and noise transmitted by the PRA fixing part 230 by the PRA operation are absorbed by the rubber bushing 240b corresponding to the circumferential region of the second hole 242b, thereby maintaining the holding part 220 or the mounting plate ( It is not delivered to the vehicle via 210.

110, 210: Mounting Plate
120, 220: holding part
125, 225: protrusions
228 step
130, 230: PRA fixing part
140, 240: Rubber Bushing
142: concourse
242a: first hall
242b: second hall
144, 244: annular groove
146, 246: upper opening
150, 250: Fastening element
160, 260: mounting bushing

Claims (5)

A holding part formed on a mounting plate, a rubber bushing receiving the holding part and fitted into a hole of a fixing part of a power relay assembly (PRA), and a fastening member coupled to the holding part to fix the PRA. In the PRA mounting mechanism to say,
The rubber bushing,
A first hole accommodating the holding part, a second hole formed to have a diameter larger than the first hole in the upper opening of the first hole, and accommodating the fastening member, and at a position higher than the upper opening of the first hole; And an annular groove formed on an outer circumferential surface to sandwich a hole around the fixing portion.
The method of claim 1,
And said retaining portion is a stud bolt and said fastening member is a nut.
The method of claim 1,
And a mounting bushing surrounding the holding portion is inserted into the first hole.
The method of claim 1,
The upper edge of the rubber bushing is a PRA mounting mechanism characterized in that the inclined portion is formed narrower toward the top.
The method of claim 1,
The lower circumference of the holding portion has a stepped portion having a larger diameter than the upper circumference, and a stepped groove is formed in the first hole to receive the stepped portion.
KR1020100100888A 2010-10-15 2010-10-15 Apparatus for Installing Power Relay Assembly KR101142202B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020100100888A KR101142202B1 (en) 2010-10-15 2010-10-15 Apparatus for Installing Power Relay Assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020100100888A KR101142202B1 (en) 2010-10-15 2010-10-15 Apparatus for Installing Power Relay Assembly

Publications (2)

Publication Number Publication Date
KR20120039268A true KR20120039268A (en) 2012-04-25
KR101142202B1 KR101142202B1 (en) 2012-05-07

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KR1020100100888A KR101142202B1 (en) 2010-10-15 2010-10-15 Apparatus for Installing Power Relay Assembly

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130007329U (en) * 2012-06-14 2013-12-24 엘에스산전 주식회사 Damper for battery disconnect unit
KR20200019446A (en) 2018-08-14 2020-02-24 한국단자공업 주식회사 Fixed device of bush

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200169644Y1 (en) 1997-10-10 2000-03-02 배길성 Vibration prevention device of a hermetic compressor
KR100343573B1 (en) 1999-12-29 2002-07-20 현대자동차주식회사 Gear box mounting structure of steering device for automobile
KR100424979B1 (en) 2001-08-21 2004-03-27 현대자동차주식회사 Combination structure of Frame fixations part

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130007329U (en) * 2012-06-14 2013-12-24 엘에스산전 주식회사 Damper for battery disconnect unit
KR20200019446A (en) 2018-08-14 2020-02-24 한국단자공업 주식회사 Fixed device of bush

Also Published As

Publication number Publication date
KR101142202B1 (en) 2012-05-07

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