KR20130131254A - Resolver stator locking unit of hsg motor - Google Patents

Resolver stator locking unit of hsg motor Download PDF

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Publication number
KR20130131254A
KR20130131254A KR1020130058527A KR20130058527A KR20130131254A KR 20130131254 A KR20130131254 A KR 20130131254A KR 1020130058527 A KR1020130058527 A KR 1020130058527A KR 20130058527 A KR20130058527 A KR 20130058527A KR 20130131254 A KR20130131254 A KR 20130131254A
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South Korea
Prior art keywords
resolver stator
motor
hsg
fixing mechanism
fixing
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KR1020130058527A
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Korean (ko)
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전성민
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에스앤티모티브 주식회사
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Publication of KR20130131254A publication Critical patent/KR20130131254A/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/242—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by carrying output of an electrodynamic device, e.g. a tachodynamo
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/244—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
    • G01D5/245—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains using a variable number of pulses in a train
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K24/00—Machines adapted for the instantaneous transmission or reception of the angular displacement of rotating parts, e.g. synchro, selsyn
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/24—Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

The present invention relates to a resolver stator fixing unit of an HSG motor comprising a resolver stator fixing part installed at the end of a protruding part of a motor cover. The fixing part comprises the following: a ring-shaped rim portion having a plurality of penetrating grooves for fastening bolts; a pressing part protruding from the end of the rim portion; and a hook part protruding from the end of the rim portion and of which the length is longer than that of the pressing part. On the outer surface of the resolver stator , a home which the hook part of the fixing part is inserted into is formed. Since the resolver stator can be fixed using the fixing unit, sensing errors caused by the operation of HSG motor may be prevented.

Description

HSG 모터의 레졸버 스테이터 고정구조{resolver stator locking unit of HSG motor}Resolver stator locking unit of HSG motor

본 발명은 HSG 모터의 레졸버 스테이터가 움직이지 않도록 고정하는 레졸버 스테이터 고정구조에 관한 것이다.
The present invention relates to a resolver stator fixing structure for fixing the resolver stator of an HSG motor so as not to move.

HSG (Hybrid Starter & Generator) 모터는 시동전동기와 발전기의 기능을 함께 갖는 기기로서, 하이브리드 자동차 내지는 전기 자동차에 적용되며 고기동토크 및 고발전용량의 특성을 가지고 있으며, 가솔린 등의 화석연료를 대체하기 위한 기술개발의 추이에 맞추어 크게 주목받고 있다.HSG (Hybrid Starter & Generator) motor is a device that has the functions of a starting motor and a generator. It is applied to a hybrid vehicle or an electric vehicle and has high dynamic torque and high power generation capacity. In line with the trend of technology development, it has attracted much attention.

한편, HSG 모터는 다양한 환경에서 사용되는 특성상, 갑작스러운 기동과 고속회전과 같은 작동이 반복됨으로써 과도한 부하가 발생할 가능성이 있다.On the other hand, HSG motors may be subjected to excessive load due to repeated use such as sudden start and high speed rotation, due to the characteristics used in various environments.

그리고, 이러한 과부하로 인한 진동이 지속될 경우 레졸버 스테이터의 고정상태가 약화됨으로써 오작동이 유발될 수 있기에 도 1에 나타난 것과 같이 HSG 모터(10)에는 레졸버 스테이터(14)를 고정하는 고정기구(20)가 구비되어 있다.In addition, if the vibration caused by such an overload persists, the fixing state of the resolver stator may be weakened, thereby causing malfunction. As shown in FIG. 1, the fixing mechanism 20 fixing the resolver stator 14 to the HSG motor 10 is shown. ) Is provided.

도 2에 나타난 것과 같이 고정기구(20)는 대략 링형태로서, 평면형태의 림부(201)와, 림부(201)의 내측 가장자리에서 돌출된 압박부(202)로 이루어지며, 림부(201)에는 다수개의 볼트체결용 관통홀(20a)이 형성된 구조로 이루어져 있다.As shown in FIG. 2, the fixing mechanism 20 has a substantially ring shape, and includes a rim portion 201 having a planar shape and a pressing portion 202 protruding from an inner edge of the rim portion 201. It consists of a structure in which a plurality of bolted through holes 20a are formed.

이러한 종래기술에 의하면 고정기구(20)가 모터커버(12)의 중심에 형성된 돌출단부(121) 상면에 볼트체결방식으로 장착되며, 장착된 상태에서 압박부(202)가 레졸버 스테이터(14)의 외면을 중심측으로 압박하게 됨으로써 레졸버 스테이터(14)가 고정되는 것이다.According to the prior art, the fixing mechanism 20 is mounted on the upper surface of the protruding end 121 formed at the center of the motor cover 12 by bolting method, and the pressing unit 202 is the resolver stator 14 in the mounted state. The resolver stator 14 is fixed by pressing the outer surface toward the center side.

즉, 종래기술에 의하면, 고정기구(20)의 압박부(202)가 레졸버 스테이터(14)를 압박하는 특성상 압박부(202)와 레졸버 스테이터(14) 사이에 유발되는 이른바 마찰억제작용에 의해 레졸버 스테이터(14)가 고정된다고 볼 수 있다.That is, according to the prior art, due to the property that the pressing portion 202 of the fixing mechanism 20 presses the resolver stator 14, the so-called friction suppressing action caused between the pressing portion 202 and the resolver stator 14 is caused. It can be seen that the resolver stator 14 is fixed by this.

그리고, 이러한 마찰억제작용은 고정기구(20)의 압박부(202)와 레졸버 스테이터(14) 사이의 상호구성에 따라 달라질 수 있는 것이기 때문에 HSG 모터(10) 조립 과정에서의 유격 내지는 레졸버 스테이터(14)나 고정기구(20) 자체의 형태오차 등이 발생하는 경우 고정기구(20)에 의한 레졸버 스테이터(14)의 고정작용이 안정적으로 이루어지지 않게 된다.In addition, since the friction inhibiting action may vary depending on the configuration between the pressing portion 202 of the fixing mechanism 20 and the resolver stator 14, the clearance or resolver stator during the HSG motor 10 assembly process. (14) or when the shape error of the fixing mechanism 20 itself occurs, the fixing action of the resolver stator 14 by the fixing mechanism 20 is not made stable.

또한, 종래기술에 의하면, 모터커버(12)의 돌출단부(121) 상면에 형성된 각각의 볼트홀과 고정기구(20)의 림부(201)에 형성된 각각의 관통홀(20a)이 정확히 일치하지 않으면, 고정기구(20)가 제대로 장착되기 않기 때문에 고정기구(20)를 제작하고 및 모터커버(12)의 돌출단부(121)를 형성하는 과정에서 높은 수준의 정밀도를 필요로 하게 됨으로써 결과적으로 HSG 모터(10)의 생산성이 저하된다는 문제점이 있다.In addition, according to the related art, if each of the bolt holes formed in the upper surface of the projecting end 121 of the motor cover 12 and the respective through holes 20a formed in the rim portion 201 of the fixing mechanism 20 do not correspond exactly, In order to manufacture the fixing mechanism 20 and to form the protruding end 121 of the motor cover 12 because the fixing mechanism 20 is not properly mounted, the HSG motor is required as a result. There exists a problem that productivity of (10) falls.

본 발명은 상기한 종래 문제점을 해결하고자 안출된 것으로, 레졸버 스테이트의 고정상태가 안정적으로 유지되도록 함과 동시에 조립이 용이토록 하는 HSG 모터의 레졸버 스테이터 고정구조 제공을 목적으로 한다.
The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a resolver stator fixing structure of an HSG motor that allows the assembly state of the resolver state to be stably maintained and at the same time easy to assemble.

상기 목적을 달성하기 위하여 제공되는 본 발명에 따른 HSG 모터의 레졸버 스테이터 고정구조는, 모터커버의 돌출단부에 장착되어 레졸버 스테이터를 고정하는 고정기구를 포함하여 이루어지며, 상기 고정기구는 다수개의 볼트체결용 관통홀이 형성된 링형태의 림부와, 상기 림부의 내측 가장자리에서 돌출된 형태로 갖추어지는 압박부와, 상기 림부의 내측 가장자리에서 상기 압박부 보다 더욱 돌출되도록 구성되는 걸림후크부로 이루어지고, 상기 레졸버 스테이터의 외면에는 상기 고정기구의 걸림후크부가 삽입되어 걸리는 걸림홈이 형성된 것을 특징으로 한다.Resolver stator fixing structure of the HSG motor according to the present invention provided to achieve the above object, it comprises a fixing mechanism for fixing the resolver stator is mounted to the protruding end of the motor cover, the fixing mechanism is a plurality of A ring-shaped rim portion having a bolting through hole formed therein, a pressing portion provided in a form protruding from the inner edge of the rim portion, and a hooking hook portion configured to protrude more than the pressing portion from the inner edge of the rim portion, The outer surface of the resolver stator is characterized in that the engaging groove is formed by the engaging hook portion of the fixing mechanism is formed.

상기 레졸버 스테이터의 외면에 형성된 걸림홈은 일정한 간격을 가지고 다수개가 형성된다.A plurality of engaging grooves formed on the outer surface of the resolver stator are formed at regular intervals.

상기 볼트체결용 관통홀은 장홀형태로 이루어진다.
The bolt fastening through hole has a long hole shape.

이상에서 살펴본 바와 같은 본 발명에 따른 HSG 모터의 레졸버 스테이터 고정구조에 의하면 레졸버 스테이터의 움직임이 적극적으로 방지되기 때문에 HSG 모터의 작동에 따른 센싱에러가 발생할 우려가 낮아진다는 이점이 있다.
According to the resolver stator fixing structure of the HSG motor according to the present invention as described above has the advantage that the possibility of sensing errors due to the operation of the HSG motor is reduced because the movement of the resolver stator is actively prevented.

도 1은 종래기술에 따른 HSG 모터의 레졸버 스테이터 고정구조를 나타난 사시도이다.
도 2는 종래기술에 따른 HSG 모터의 레졸버 스테이터 고정구조에 적용되는 고정기구를 나타낸 사시도이다.
도 3은 본 발명에 따른 HSG 모터의 레졸버 스테이터 고정구조에 적용되는 고정기구를 나타난 사시도이다.
도 4는 본 발명에 따른 HSG 모터의 레졸버 스테이터 고정구조에서 고정기구를 장착과정을 나타낸 예시도이다.
도 5는 본 발명에 따른 HSG 모터의 레졸버 스테이터 고정구조에서 고정기구와 레졸버 스테이터의 결합관계를 나타낸 예시도이다.
도 6은 본 발명에 따른 HSG 모터의 레졸버 스테이터 고정구조에서 고정기구장착상태를 나타낸 예시도이다.1 is a perspective view showing a resolver stator fixing structure of an HSG motor according to the prior art.
Figure 2 is a perspective view showing a fixing mechanism applied to the resolver stator fixing structure of the HSG motor according to the prior art.
Figure 3 is a perspective view showing a fixing mechanism applied to the resolver stator fixing structure of the HSG motor according to the present invention.
4 is an exemplary view showing a mounting process of the fixing mechanism in the resolver stator fixing structure of the HSG motor according to the present invention.
5 is an exemplary view showing a coupling relationship between the fixing mechanism and the resolver stator in the resolver stator fixing structure of the HSG motor according to the present invention.
6 is an exemplary view showing a fixing mechanism mounted state in the resolver stator fixing structure of the HSG motor according to the present invention.

이하, 본 발명의 구체적인 내용을 첨부된 도 3부터 도 6을 참조로 하여 상세하게 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to FIGS. 3 to 6.

도 3에 나타난 것과 같이 본 발명의 레졸버 스테이터 고정구조에 적용되는 고정기구(30)는 다수개의 볼트체결용 관통홀(30a)이 형성된 링형태의 림부(301)와, 상기 림부(301)의 내측 가장자리에서 돌출된 형태로 갖추어지는 압박부(302)와, 상기 림부(301)의 내측 가장자리에서 상기 압박부(302) 보다 더욱 돌출되도록 구성되는 걸림후크부(303)를 포함하여 이루어진다.As shown in FIG. 3, the fixing mechanism 30 applied to the resolver stator fixing structure of the present invention includes a rim portion 301 having a ring shape in which a plurality of bolting through holes 30a are formed, and the rim portion 301. It comprises a pressing portion 302 is provided in a form protruding from the inner edge, and the hook hook portion 303 is configured to protrude more than the pressing portion 302 at the inner edge of the rim 301.

그리고, 레졸버 스테이터(15)의 외측면에는 상기 걸림후크부(303)가 삽입되는 걸림홈(15a)이 형성되며, 상기 걸림홈(15a)은 일정한 간격을 가지고 다수개가 형성된다.In addition, the outer surface of the resolver stator 15 is formed with a locking groove 15a into which the locking hook portion 303 is inserted, and a plurality of the locking grooves 15a are formed at regular intervals.

또한, 상기 볼트체결용 관통홀(30a)은 장홀형태로 이루어진다.In addition, the bolt fastening through hole (30a) is made in the form of a long hole.

이와 같은 본 발명에 의하면, 도 4와 도 5에 나타난 것과 같이 고정기구(30)가 모터커버(12)의 돌출단부(121)에 장착된 상태에서 상기 압박부(302)가 레졸버 스테이트(15)의 외면을 압박함과 동시에 걸림후크부(303)가 레졸버 스테이트(15)의 외측면에 형성된 걸림홈(15a)에 삽입되어 레졸버 스테이트(15)의 움직임을 억제하게 된다.According to the present invention, as shown in Figure 4 and 5, the pressing unit 302 is the resolver state 15 in the state in which the fixing mechanism 30 is mounted on the protruding end 121 of the motor cover 12. The pressing hook portion 303 is inserted into the locking groove 15a formed on the outer surface of the resolver state 15 to suppress the movement of the resolver state 15.

즉, 고정기구(30)의 압박부(302)가 레졸버 스테이트(15)를 압박하여 발생하는 마찰작용 뿐만 아니라, 걸림후크가 걸림홈(15a)에 삽입됨으로써 형성되는 걸림작용의 이중효과에 의해서 레졸버 스테이트(15)의 움직임이 매우 강력하게 억제된다.That is, due to the dual effect of the locking action that is formed by inserting the locking hook into the locking groove 15a as well as the frictional action caused by the pressing portion 302 of the fixing mechanism 30 pressing the resolver state 15. The movement of the resolver state 15 is very strongly suppressed.

더불어 본 발명에 의하면, 볼트체결용 관통홀(30a)이 장홀형태로 이루어진 특성상, 상기 고정기구(30)를 장착하는 과정에서 볼트체결작업이 용이할 뿐만 아니라, 볼트체결구성을 위하여 종래와 같은 높은수준의 가공정밀도를 필요로 하지 않게 된다.(도 6 참조)In addition, according to the present invention, the bolt fastening through hole (30a) is in the form of a long hole, the bolt fastening operation in the process of mounting the fixing mechanism 30, as well as high for the bolt fastening configuration as conventional No level of machining precision is required (see Figure 6).

또한, 레졸버 스테이트(15)의 외면에 다수개의 걸림홈(15a)이 형성된 특성상 고정기구(30) 장착과정에서 초기에 걸림후크부(303)와 걸림홈(15a)의 위치가 맞지 않더라도 레졸버 스테이트(15)를 약간만 회전시켜서 걸림후크부(303)와 걸림홈(15a)의 위치를 맞출수 있기 때문에 조립작업이 용이하게 이루어진다.In addition, even though the position of the hook hook 303 and the catching groove 15a is not correct at the initial stage during the mounting of the fixing mechanism 30 due to the nature of the plurality of catching grooves 15a formed on the outer surface of the resolver state 15, the resolver Since the state of the locking hook portion 303 and the locking groove 15a can be aligned by only slightly rotating the state 15, the assembly work is easily performed.

15: 레졸버 스테이터 15a: 걸림홈
30: 고정기구 30a: 관통홀
301: 림부 302: 압박부
303: 걸림후크부 15: Resolver Stator 15a: Hanging Groove
30: fixing mechanism 30a: through hole
301: rim portion 302: pressing portion
303: hook hook portion

Claims (3)

모터커버의 돌출단부에 장착되어 레졸버 스테이터를 고정하는 고정기구를 포함하는 HSG 모터의 레졸버 스테이터 고정구조에 있어서,

상기 고정기구는
다수개의 볼트체결용 관통홀이 형성된 링형태의 림부와
상기 림부의 내측 가장자리에서 돌출된 형태로 갖추어지는 압박부와
상기 림부의 내측 가장자리에서 상기 압박부 보다 더욱 돌출되도록 구성되는 걸림후크부로 이루어지고,

상기 레졸버 스테이터의 외면에는 상기 고정기구의 걸림후크부가 삽입되어 걸리는 걸림홈이 형성된 것을 특징으로 하는 HSG 모터의 레졸버 스테이터 고정구조.
In the resolver stator fixing structure of the HSG motor comprising a fixing mechanism fixed to the protrusion end of the motor cover to fix the resolver stator,

The fixing mechanism
Ring-shaped rim with a plurality of bolted through holes
Compression portion provided in the form protruding from the inner edge of the rim
The hook portion is configured to protrude more than the pressing portion at the inner edge of the rim,

Resolver stator fixing structure of the HSG motor, characterized in that the outer surface of the resolver stator is formed with a locking groove that is inserted into the locking hook portion of the fixing mechanism.
제1항에 있어서,
상기 레졸버 스테이터의 외면에 형성된 걸림홈은 일정한 간격을 가지고 다수개가 형성되는 것
을 특징으로 하는 HSG 모터의 레졸버 스테이터 고정구조.The method of claim 1,
A plurality of locking grooves formed on the outer surface of the resolver stator are formed at regular intervals
Resolver stator fixing structure of the HSG motor. 제1항에 있어서,
상기 볼트체결용 관통홀은 장홀형태로 이루어지는 것
을 특징으로 하는 HSG 모터의 레졸버 스테이터 고정구조.The method of claim 1,
The bolt fastening through hole is made in the form of a long hole
Resolver stator fixing structure of the HSG motor.
KR1020130058527A 2012-05-23 2013-05-23 Resolver stator locking unit of hsg motor KR20130131254A (en)

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Application Number Priority Date Filing Date Title
KR20120054640 2012-05-23
KR1020120054640 2012-05-23

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180058082A (en) * 2016-11-23 2018-05-31 현대자동차주식회사 Resolver mounting structure for motor
CN109817859A (en) * 2019-02-18 2019-05-28 深圳易马达科技有限公司 Battery compartment and battery cupboard
CN110011507A (en) * 2017-12-20 2019-07-12 现代自动车株式会社 Rotary transformer
US11245318B1 (en) * 2020-07-29 2022-02-08 Schaeffler Technologies AG & Co. KG Resolver clamping plate for electric motor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180058082A (en) * 2016-11-23 2018-05-31 현대자동차주식회사 Resolver mounting structure for motor
CN110011507A (en) * 2017-12-20 2019-07-12 现代自动车株式会社 Rotary transformer
CN109817859A (en) * 2019-02-18 2019-05-28 深圳易马达科技有限公司 Battery compartment and battery cupboard
US11245318B1 (en) * 2020-07-29 2022-02-08 Schaeffler Technologies AG & Co. KG Resolver clamping plate for electric motor

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