阅读说明：本技术 电动机的轴承端板上用于解角器的保持装置 (Holding device for resolver on bearing end plate of motor ) 是由 伯恩哈德·凯斯勒 莫妮克·艾琳 塞巴斯蒂安·韦德尔 于 2019-06-28 设计创作，主要内容包括：一种轴承端板(33)上用于解角器(31)的保持装置(1),包括主体(3),其具有：-至少一个孔眼(19、21),借助紧固机构(23、25)使主体(3)可穿过至少一个孔眼紧固在轴承端板(33)上；-至少两个保持凸耳(13、15、17),这至少两个保持凸耳将所述解角器(31)保持在所述轴承端板(33)上。(A holding device (1) for a resolver (31) on a bearing end plate (33), comprising a main body (3) having: -at least one eyelet (19, 21) through which the body (3) can be fastened to the bearing end plate (33) by means of a fastening mechanism (23, 25); -at least two retaining lugs (13, 15, 17) which retain the resolver (31) on the bearing end plate (33).)

1. A holding device (1) for a resolver (31) on a bearing end plate (33), comprising a main body (3) having:

-at least one eyelet (19, 21) through which the body (3) can be fastened to the bearing end plate (33) by means of a fastening mechanism (23, 25);

-at least two retaining lugs (13, 15, 17) retaining the resolver (31) on the bearing end plate (33).

2. The holding device (1) according to claim 1, wherein the body (3) comprises at least one fixing lug (5) by means of which the resolver (31) can be fixed on the bearing end plate (33).

3. The holding device (1) according to any one of the preceding claims, wherein the body (3) comprises at least three holding lugs (13, 15, 17) arranged substantially on the first (9) and second (11) ends and on the mid-point (7) of the body (3).

4. The holding device (1) according to any one of the preceding claims, wherein at least one securing lug (5) is arranged between holding lugs (13, 15, 17) on the body (3).

5. The holding device (1) according to any one of the preceding claims, wherein the body (3) further comprises at least one bearing end plate lug (41, 43) pointing in the direction of the bearing end plate (33).

6. The holding device (1) according to any one of the preceding claims, wherein the at least one eye (19, 21) has at least one collar (45, 47) pointing in the direction of the bearing end plate (33).

7. Bearing end plate (33) with a holding device (1) according to any of the preceding claims, wherein the bearing end plate has a stepped recess below the eyelets (19, 21) of the holding device (1).

8. Bearing end plate (33) with a holding device (1) according to any of the preceding claims, wherein the bearing end plate has a stepped recess below the eye (19, 21) of the holding device (1) and in a flange (39) arranged on the bearing end plate (33).

9. Bearing end plate (33) with a resolver and a holding device (1) according to one of the preceding claims, wherein the resolver (31) has a resolver collar (35) in operative connection with the at least two holding lugs (13, 15, 17).

10. A vehicle (103) having a holding device (1) according to any one of the preceding claims on a bearing end plate in an electric motor (100) thereof.

Technical Field

The invention relates to a holding device for a resolver on a bearing end plate of an electric motor.

Background

As is well known, electric motors are increasingly widely used to drive vehicles. The motor consists of a stator and a rotor.

The stator includes a plurality of slots for guiding the windings. A rotor is located in the stator and is connected to the rotor shaft. In order to control the motor, it is necessary to know the precise angular position of the rotor in the stator. With the aid of a so-called resolver, the azimuth angle can be measured continuously. The resolver may for example be attached to the stator or the bearing end plate, but must be at a defined distance from the rotor.

Disclosure of Invention

The invention aims to provide a holding device for holding a resolver on a bearing end plate.

According to the present invention, a holding device for a resolver on a bearing end plate includes: a body having at least one eyelet through which the body may be secured to the bearing end plate by a fastening mechanism; and at least two retaining lugs (13, 15, 17) which retain the resolver (31) on the bearing end plate (33).

The holding lug exerts a defined pressure on the resolver through its defined material thickness. Thereby firmly holding the resolver without damaging it. The body is fastened, for example, by means of screws through eyelets in the bearing end plate or stator. The body is for example made of a bendable metal, so that the forces transmitted by the screw to the body only act on the resolver within a defined size. The retaining lugs yield and prevent damage to the resolver, but at the same time retain sufficient strength.

In addition, the recess in the bearing end plate can also be configured in a flange arranged on the bearing end plate.

The resolver has, for example, a collar against which the retaining lug presses and thus retains on the bearing end plate.

In another embodiment of the invention, the body may comprise at least one fixing lug by means of which the resolver may be fixed to the bearing end plate.

The position of the resolver on the bearing end plate should be known as accurately as possible in order to determine the position of the rotor. By means of the fixing lugs on the body, the resolver can be held in a predetermined position relative to the bearing end plate, since the body is arranged in a fixed position on the bearing end plate through the eyelet.

Particularly preferably, the body can have two fixing lugs.

The resolver has, for example, a recess in the collar or the resolver body, into which the securing lug can engage. By a suitable choice of the position of the fixing lug, the position of the resolver on the bearing end plate is defined and the determination of the rotor angle can be improved.

Preferably, the body may comprise at least three retention lugs, the at least three retention lugs being arranged substantially at the first and second ends and the midpoint of the body.

For example, with three holding lugs at an angular separation of approximately 33.33 degrees, the resolver can be held over its entire circumference by a three-point support.

More preferably, at least one securing lug may be disposed between the retaining lugs on the body.

On the one hand, the retention lugs are between body spaces for the fixing lugs, and on the other hand, the arrangement of the fixing lugs approximately in the middle between the retention lugs enables an even distribution of the force applied by the retaining device to the resolver.

In another embodiment of the invention, the body may further comprise at least one bearing end plate lug directed in the direction of the bearing end plate.

The orientation of the resolver on the bearing end plate can thereby be improved even more. The recess in the bearing end plate for the bearing end plate lug is, for example, only slightly larger than the bearing lug, so that the position of the resolver relative to the bearing end plate can be fixed more precisely.

The recess for the fastening mechanism in the bearing end plate allows a greater play of the retaining means than the recess for the bearing end plate lug, and therefore it allows a lower accuracy of the positioning of the resolver in relation to the bearing end plate than the recess associated with the bearing end plate lug. The eyelets on the body also allow a greater play of the retaining means than the recesses for the lugs of the bearing end plate.

In a further preferred embodiment of the invention, at least one of the eyelets can have at least one collar pointing in the direction of the bearing end plate.

With the collar, for example, the play of the main body can be further reduced, and the position of the resolver can be fixed more accurately.

The fitting of a stepped recess or perforation for the fastening mechanism in the bearing end plate or in a flange on the bearing end plate makes it possible to position the resolver more accurately by means of the holding device.

Preferably, a bearing end plate may have a retaining device according to a preferred embodiment, wherein the bearing end plate has a stepped recess below the eye of the retaining device.

The recess may have a fastening mechanism, such as a screw, engaged therein, which in combination with the retaining means retains the resolver to the bearing end plate.

In another embodiment of the invention, the bearing end plate may have a stepped recess below the eye of the holding device and in a flange arranged on the bearing end plate.

The flange may provide the recess with a sufficient material height that the bearing end plate itself does not have.

Preferably, the resolver may have a resolver collar, which is in operative connection with the at least two retaining lugs.

By means of the resolver collar, the resolver can be more effectively prevented from being damaged.

According to the invention, a vehicle has a retaining device according to a preferred embodiment on a bearing end plate of an electric motor.

Drawings

Fig. 1 shows a holding device.

Fig. 2 shows a holding device for holding the resolver on the bearing end plate.

Fig. 3 shows two cross sections of fig. 2.

Fig. 4 shows a retaining device with bearing end plate lugs.

Figure 5 shows a retaining device with a collar at the eyelet.

Fig. 6 shows a vehicle with a holding device in the electric motor.

Detailed Description

Fig. 1 shows a top view, a sectional view and an oblique top view of the holding device 1. The retaining device 1 consists of a body 3 and two retaining lugs 15, 17 arranged on the two ends 9, 11 of the body 3 and a further retaining lug 13 arranged on the body 3 at the midpoint 7 between the two other retaining lugs 15, 17.

The body 3 further has two eyelets 19, 21 for fastening means, such as screws.

Furthermore, a fixing lug 5 is arranged on the body 3, which fixing lug 5 can engage, for example, in a recess on a resolver. The fixing lugs 5 are bent downwards in the direction of the bearing end plate.

Fig. 2 shows a top view and an oblique top view of the holding fixture 1 arranged on the bearing end plate 33 and holding the resolver 31.

The bearing end plate 33 has two flanges 37, 39 with recesses for the screws 23, 25. The screws 23, 25 pass through the holes 19, 21 of the body 3 and are screwed into recesses in the flanges 37, 39 of the bearing end plate 33. By means of this screw connection, the holding device 1 is fastened to the bearing end plate 33.

The resolver 31 has a so-called resolver collar 35. The resolver collar 35 is located below the retaining lugs 13, 15, 17 and is retained on the bearing end plate by these retaining lugs.

The holding lugs 13, 15, 17 are slightly bent downwards and exert a defined force on the resolver collar 35 depending on their bending radius and their material thickness. This force is substantially independent of the pulling force of the fastening mechanism in the eyelets 19, 21, since the body abuts against the flanges 37, 39 around the eyelets. Damage to the resolver collar 35 or the resolver 31 can thereby be prevented.

The resolver collar 35 further has a recess for the fixing lug 5. The fixing lug 5 prevents the resolver from moving in the direction of rotation of the rotor. Thereby the azimuth angle measurement of the rotor can be further improved.

Fig. 3 shows a cross-sectional view of the holding device holding the resolver on the bearing end plate.

The upper drawing is a section taken through the retaining lug 17 and the eyelet 21. The screw 25 has an external thread which engages in an internal thread 38 of a recess at the flange 39.

The lower figure is a section taken through a fixing lug 5 arranged on the body 3. The fixing lug 5 engages into the resolver or the resolver collar and prevents the resolver from rotating. The position of the resolver is fixed in the radial direction by the fixing lugs 5.

Fig. 4 shows an oblique top view of a further embodiment of the holding device 1 and its top view on the bearing end plate 33 mounted on the stator. The body 3 additionally has two bearing end plate lugs 41, 43. The bearing end plate lugs engage into the recesses of the bearing end plate 33 and improve the exact position of the retaining device 1 on the bearing end plate 33.

Fig. 5 shows a further holding device 1 in a plan view and in a sectional view with its mounting on the bearing end plate 33. The bores 19, 21 in the body 3 have collars 45, 47 which are bent in the direction of the bearing end plate 33 or the stator. The recesses in the flanges 37, 39 on the bearing end plate 33 are stepped. In the first section, the diameter of the recess is larger than the diameter required for the fastening mechanism or screw 23, 25. Into which the collars 45, 47 engage. The diameter of the second section of the recess is smaller than the diameter of the first section, wherein the internal thread present in this second section, for example, matches the external thread of the screws 23, 25.

Fig. 6 shows a vehicle 103 with a holding device in the electric motor 100.