阅读说明：本技术 具有壳体件和盖件的电气设备、特别是变频电机 (Electrical device, in particular inverter motor, having a housing part and a cover part ) 是由 R·迈尔 F·戴明格尔 于 2020-03-09 设计创作，主要内容包括：本发明涉及一种具有壳体件和盖件的电气设备、特别是变频电机,其中,在壳体件与盖件之间布置有框架件,其中,在被由壳体件和盖件、特别是还有框架件形成的壳体包围的内部空间中布置有电子电路,其中,密封件布置在框架件上,特别是以注射方式布置在框架件上,特别是其中,密封件接触在盖件上形成的、特别是平坦的连接面,密封件也接触在壳体件上形成的、特别是平坦的连接面,其中,盖件的连接面的区域接触框架件,其中,壳体件的连接面的区域接触框架件。(The invention relates to an electrical device, in particular an inverter motor, having a housing part and a cover part, wherein a frame part is arranged between the housing part and the cover part, wherein an electronic circuit is arranged in an interior space enclosed by a housing formed by the housing part and the cover part, in particular the frame part, wherein a sealing element is arranged on the frame part, in particular by injection, in particular wherein the sealing element contacts an, in particular flat, connecting surface formed on the cover part, the sealing element also contacts an, in particular flat, connecting surface formed on the housing part, wherein a region of the connecting surface of the cover part contacts the frame part, wherein a region of the connecting surface of the housing part contacts the frame part.)

1. An electrical device, in particular an inverter motor, having a housing part and a cover part,

wherein a frame member is arranged between the housing member and the cover member,

wherein an electronic circuit is arranged in an interior space enclosed by a housing formed by the housing part and the cover part, in particular also the frame part,

it is characterized in that the preparation method is characterized in that,

the sealing element is arranged on the frame element, in particular by injection,

wherein the sealing element contacts a, in particular flat, connecting surface formed on the cover element, in particular thereby forming a seal between the frame element and the cover element, and the sealing element also contacts a, in particular flat, connecting surface formed on the housing element, in particular thereby forming a seal between the frame element and the housing element,

wherein an area of the connection face of the cover member contacts the frame member,

wherein the area of the connection face of the housing part contacts the frame part.

2. The electrical device of claim 1, wherein the electrical device is a single-phase electrical device,

it is characterized in that the preparation method is characterized in that,

the sealing element surrounds the edge region of the frame element which is located on the outside as viewed from the interior,

in particular, the first region of the sealing element is arranged on the side of the frame element facing the cover element, and the second region of the sealing element is arranged on the side of the frame element facing the housing element.

3. Electrical device according to any one of the preceding claims,

it is characterized in that the preparation method is characterized in that,

screws which pass through the cover part and the frame part are screwed into threaded holes which are arranged in the housing part, wherein the screw heads of the screws press the cover part against the housing part so that the cover part contacts the frame part and in particular the frame part on the side of the frame part facing away from the cover part contacts the housing part.

4. Electrical device according to any one of the preceding claims,

it is characterized in that the preparation method is characterized in that,

the frame member is made of metal and the sealing member is made of plastic and/or rubber.

5. Electrical device according to any one of the preceding claims,

it is characterized in that the preparation method is characterized in that,

the frame member is formed substantially rectangularly.

6. Electrical device according to any one of the preceding claims,

it is characterized in that the preparation method is characterized in that,

the frame part has a web region, in particular a web region formed in a clip-like manner, which is held in a form-fitting manner, in particular clamped, on a projection region formed on the housing part, in particular on a projection region formed on the inner wall of the housing part in such a way that it projects into the interior space.

7. Electrical device according to any one of the preceding claims,

it is characterized in that the preparation method is characterized in that,

the respective projection region has a lead-in chamfer, in particular wherein the projection region projects gradually into the interior space in the direction of the screw axis of the screw,

in particular, the projection region projects less far into the interior space behind the lead-in chamfer than in the projection region.

8. Electrical device according to any one of the preceding claims,

it is characterized in that the preparation method is characterized in that,

the respective projection region is designed as a respective thickening of the wall of the housing part.

9. Electrical device according to any one of the preceding claims,

it is characterized in that the preparation method is characterized in that,

the threaded hole is designed in a thickened portion of the wall of the housing part,

in particular, the thickened portion is spaced apart from the bulge region and projects into the interior space.

10. Electrical device according to any one of the preceding claims,

it is characterized in that the preparation method is characterized in that,

the connection face is parallel to a plane whose normal is parallel to the screw axis direction of the screw.

11. Electrical device according to any one of the preceding claims,

it is characterized in that the preparation method is characterized in that,

the connecting web region on the frame element is bent, in particular from a plane parallel to the plane, in the direction of the screw axis.

12. Electrical device according to any one of the preceding claims,

it is characterized in that the preparation method is characterized in that,

the frame part has a recess, in particular running through in the direction of the screw axis of the screw,

a pin formed on the housing part extends into the recess,

in particular, wherein the pin is designed in a thickened portion of the wall of the housing part,

in particular, the thickened portion is spaced apart from the bulge region and projects into the interior space.

13. Electrical device according to any one of the preceding claims,

it is characterized in that the preparation method is characterized in that,

the housing part has a recess on its underside,

wherein the housing part is arranged on a terminal box accessory of the motor,

wherein a stator wire of a stator of the motor is inserted into an inner space surrounded by the housing through the gap,

in particular, a frequency converter is arranged in the interior space.

14. Electrical device according to any one of the preceding claims,

it is characterized in that the preparation method is characterized in that,

the sealing element and the frame element are designed as a composite element,

and/or

The sealing element has a first sealing lip on the side of the frame element facing the cover element, which is formed around the frame element and is elastically deformed more strongly than the remaining material of the sealing element on the side of the frame element facing the cover element,

the sealing element has a second sealing lip on the side of the frame element facing the housing element, which is formed around the frame element and is elastically deformed more strongly than the remaining material of the sealing element on the side of the frame element facing the housing element.

15. Electrical device according to any one of the preceding claims,

it is characterized in that the preparation method is characterized in that,

the screw passes through a hole arranged in the frame element, which hole is sealed by a sealing element in each of the two connection faces, i.e. in particular on both sides of the frame element, towards the interior space and towards the surroundings,

and/or

The first sealing lip completely surrounds the screw in a first of the two connection faces, i.e. forms a seal in particular towards the interior space and towards the exterior environment,

the second sealing lip completely surrounds the screw in the second of the two connection surfaces, i.e. forms a seal in particular toward the interior and toward the exterior.

Technical Field

The invention relates to an electrical device, in particular an inverter motor (Umrichtermotor), having a housing part and a cover part.

Background

It is generally known that housings can be designed with a high level of protection by means of seals.

Disclosure of Invention

It is therefore an object of the present invention to improve an electrical device with a high protection level in a simple manner.

According to the invention, this object is achieved by an electrical device according to the features given in claim 1.

In an electrical apparatus, in particular an inverter motor, having a housing part and a cover part, an important feature of the invention is that a frame part is arranged between the housing part and the cover part,

wherein an electronic circuit is arranged in an interior space enclosed by a housing formed by the housing part and the cover part, in particular also the frame part,

wherein a sealing element is arranged, in particular injection-molded, on the frame element,

in this case, the sealing element not only contacts the, in particular flat, connecting surface formed on the cover part, in particular in order to form a seal between the frame part and the cover part, but also contacts the, in particular flat, connecting surface formed on the housing part, in particular in order to form a seal between the frame part and the housing part,

wherein an area of the connection face of the cover member contacts the frame member,

wherein the area of the connection face of the housing part contacts the frame part.

The sealing element is preferably arranged between the housing part and the cover part, and the cover part is thereby connected in a sealing manner to the housing part. For this purpose, the sealing element is held by the frame element in a material-locking manner. In this way, precise positioning can be achieved during assembly. In particular, the housing part has a positioning means, such as a pin, for this purpose, which projects into a recess of the frame part. Furthermore, the cover part and the housing part each have to provide only a flat surface against which the sealing element is pressed and thereby sealed. The connecting surfaces are finished separately.

In an advantageous embodiment, the sealing element surrounds an edge region of the frame element which is located on the outside, as seen from the interior,

in particular, the first region of the sealing element is arranged on the side of the frame element facing the cover element, and the second region of the sealing element is arranged on the side of the frame element facing the housing element. The advantage here is that the sealing element extends integrally from a first side of the frame element facing the cover element to a second side of the frame element facing the housing element. In this way, a gap-free seal can be achieved. Since the frame element therefore does not directly participate in the sealing function, but merely serves to hold the sealing element and predefines a defined deformation path for the deformation of the sealing element.

In an advantageous embodiment, a screw/threaded element which passes through the cover element and through the frame element is screwed into a threaded hole arranged in the housing element, wherein the screw head of the screw presses the cover element against the housing element, so that the cover element contacts the frame element and in particular the frame element contacts the housing element on the side of the frame element facing away from the cover element. The advantage here is that the housing part and the cover part can be screwed together by means of the screws towards the frame part, i.e. until full contact of the respective connecting surface with the frame part is established. Therefore, the screwing depth of the screw is limited by the frame member, and thus the deformation of the sealing member is also limited. However, since the sealing element protrudes, it is deformed only to such an extent that the connecting surface lies flat against the frame element.

In an advantageous embodiment, the frame element is made of metal and the sealing element is made of plastic and/or rubber. The advantage here is that a simple, cost-effective production is achieved, wherein the frame part is designed to be stable and the sealing element is designed to be elastically deformable.

In an advantageous embodiment, the frame element is formed substantially rectangular. The advantage here is that the interior space encloses a large volume and can accommodate a rectangular printed circuit board on which the electronic components of the frequency converter/current transformer (Umrichter) can be mounted. Thus, an optimum space utilization between the circuit board and the frame member can be achieved.

In an advantageous embodiment, the frame part has web regions, in particular web regions formed in a clip-like manner, which are held in a form-fitting manner, in particular clamped, on projection regions formed on the housing part, in particular on projection regions formed on the inner wall of the housing part in such a way as to project into the interior space. The advantage here is that the connecting web region can be clamped into the projection region and thus the frame part can be positioned and connected to the housing part. Thus, the frame element is already positioned on the housing element when the cover element is fitted.

In an advantageous embodiment, the respective projection region has a lead-in chamfer, in particular wherein the projection region projects gradually into the interior space in the direction of the screw axis of the screw,

in particular, the projection region projects less far into the interior space behind the lead-in chamfer than in the projection region. The advantage here is that, when the frame part is mounted, the connecting web region is gradually deflected elastically into the interior space until the connecting web region snaps over the projection region.

In an advantageous embodiment, the respective projection region is designed as a respective thickening of the wall of the housing part. The advantage here is that the wall has increased stability and the projection region can be produced simply and cost-effectively, in particular during the initial forming during casting.

In an advantageous embodiment, the threaded bore is designed in a thickened portion of the wall of the housing part,

in particular, the thickened portion is spaced apart from the bulge region and projects into the interior space. The advantage here is that the frame part has increased stability and no increased effort is required for producing the threaded bores. Therefore, thickening can be taken into account already during the initial shaping.

In an advantageous embodiment, the connection surface is oriented parallel to a plane, the normal to which is parallel to the direction of the screw axis of the screw. This is advantageous here.

In an advantageous embodiment, the web region of the frame part is bent, in particular from a plane parallel to the plane, in the direction of the screw axis. The advantage here is that the frame part can be produced as a stamped and bent part from sheet metal. Thus, an improved stability can be achieved in a simple manner. Furthermore, by bending the web regions downward, an offset of the web regions perpendicular to the placement direction can be achieved, and thus a clamping, i.e. an effective positive locking in the placement direction, can be achieved.

In an advantageous embodiment, the frame part has a recess running through it, in particular in the direction of the screw axis of the screw,

a pin formed on the housing part extends into the recess,

in particular, wherein the pin is designed in a thickened portion of the wall of the housing part,

in particular, the thickened portion is spaced apart from the bulge region and projects into the interior space. The advantage here is that precise positioning can be achieved without particular expenditure. By means of the web region, a rough positioning can be achieved when clamping onto the projection region, while additionally a precise positioning can be achieved by means of the pin.

In an advantageous embodiment, the housing part has a recess on its underside,

wherein the housing part is arranged on a terminal box accessory of the motor,

wherein a stator wire of a stator of the motor is inserted into an inner space surrounded by the housing through the gap,

in particular, a frequency converter is arranged in the interior space. The advantage here is that the housing part can be placed on the electric machine. The electrical device can thus be designed integrally on the electric machine and can be used in the field, since the housing is sealed by means of the frame element.

In an advantageous embodiment, the sealing element and the frame element are designed as a composite element. The advantage here is that simple production can be achieved.

In an advantageous embodiment, the sealing element has a first sealing lip on the side of the frame element facing the cover element, which is formed circumferentially on the frame element and is elastically deformed more strongly than the remaining material of the sealing element on the side of the frame element facing the cover element,

the sealing element has a second sealing lip on the side of the frame element facing the housing element, which is formed around the frame element and is elastically deformed more strongly than the remaining material of the sealing element on the side of the frame element facing the housing element. The advantage here is that a high tightness, i.e. a high protection level, can be achieved in a simple cost-effective manner.

In an advantageous embodiment, the screws pass through holes arranged in the frame part, which are sealed by the sealing element in each of the two connection faces, i.e. in particular on both sides of the frame part, towards the interior space and towards the surroundings. The advantage here is that a high level of protection can be achieved and that the screw can be protected against corrosion.

In an advantageous embodiment, the first sealing lip completely surrounds the screw in the first of the two connection surfaces, in particular so that a seal is formed towards the interior space and towards the exterior environment,

the second sealing lip completely surrounds the screw in the second of the two connection surfaces, in particular so that a seal is formed towards the interior and towards the exterior. The advantage here is that the screw is protected against corrosion.

Further advantages emerge from the dependent claims. The invention is not limited to the combination of features of the claims. Other possible combinations of the features of the claims and/or of the individual claims and/or of the features of the description and/or of the drawings can be made possible for the person skilled in the art, in particular from the objects set forth and/or by comparison with the prior art.

Drawings

The invention will now be described in detail with reference to the schematic drawings:

fig. 1 shows a perspective view of a housing part 6 with a fitted frame part 1.

Fig. 2 shows the frame part 1 in an oblique view, raised from the housing part 6.

Fig. 3 shows a cross section of a housing formed by the housing part 6 with the cover part 30 attached to the frame part 1.

Fig. 4 shows a detail of fig. 3 in an enlarged manner.

Fig. 5 shows a top view of the housing.

Detailed Description

As shown, the housing part has a recess 7 on its underside, so that the housing can be mounted on a terminal box attachment of the electric machine and the stator wires can be inserted through the recess 7 into the interior space enclosed by the housing.

In the housing, an electronic circuit can be arranged, which can be designed as a frequency converter for feeding the electric motor. The frequency converter together with the housing and the motor thus overall form a variable frequency motor.

Alternatively, however, the housing can also be arranged in the device separately, i.e. separately, from the electric motor. For this purpose, the housing part 6 is then screwed onto the carrier or the appliance.

Between the cover element 30 and the housing element 6, a frame element 1 can be arranged, which has an injected sealing element 2. The cover 30 can thus be connected in a sealed manner to the housing part 6. Because the frame element 1 has a wall thickness which is smaller than the wall thickness of the sealing element 2. Furthermore, a sealing element 2 is arranged on the outer edge of the frame element 1. When the screws 31 are screwed into threaded holes arranged in the housing part 6, the cover part 30 is therefore pressed with a flat connecting surface against the frame part 1, which in turn is pressed against a flat connecting surface of the housing part 6.

The seal 2 is thereby elastically compressed and thus bears sealingly against the two connection surfaces.

However, the sealing element 2 does not have an increasing wall thickness along the entire connecting surface facing the cover element 30 and the housing element 6, but rather the sealing element 2 has a sealing lip running around on the outer edge of the frame element 1, which sealing lip projects from the remaining material of the sealing element 2. As a result, a particularly high surface pressure of the seal 2 and thus also a high protection level can be achieved.

Fig. 4 shows the sealing element 2 undeformed, although the cover element 30 and the housing element 6 rest against the frame element 1. The projecting region of the seal 2 shown there is the region which is deformed during the actual connection. Thus, the seal 2 is applied with a high surface pressure.

The frame element 1 has spaced-apart web regions 3 which are clipped into projecting lug regions 5 on the housing part 6.

The web area 3 is bent at the frame element 1 by approximately 90 °, i.e. extends perpendicularly to the joint plane.

The projection region 5 projects toward the interior and has a lead-in ramp, so that when the frame part 1 is placed onto the housing part 6, the connecting web region is guided along the lead-in ramp and is initially gradually elastically deflected into the interior region enclosed by the housing part 6. After exceeding the point of maximum penetration of the respective projection region 5 into the interior space, the respective web region 3 snaps into a recess or indentation behind the respective projection region 5.

Furthermore, the frame part 1 has a recess, in particular a round hole, into which a pin 4 formed on the housing part 6 projects, so that the frame part 1 is positioned and/or centered relative to the housing part 6.

The corresponding pin 4 is designed on a web, which is designed as a thickening of the wall thickness of the housing part 6.

Likewise, the respective projection region 5 is designed as a thickening of the wall thickness of the housing part 6.

The sealing lip of the sealing element 2, which runs around the outer edge of the frame element 1, extends in two parts in the region of the respective threaded hole 8. The sealing lip is thus divided in this region into an inner part facing the inner space and an outer part facing away from the inner space.

The opening of the respective threaded bore 8 is therefore surrounded on both sides by the sealing lip, as seen from the interior space, and is completely sealed when the cover 30 is placed, in particular in all directions of the connection surface.

In a further embodiment according to the invention, the frame element 1 is made of the same material as the housing element 6 and the cover element 30, in particular aluminum. Therefore, no interference of the sealing system is caused even in the case of thermal variations.

In a further embodiment according to the invention, the housing is adapted to enclose a further electronic circuit. The housing is thus a housing for an electrical device.

List of reference numerals:

frame element, in particular metal frame element

2 sealing element

3 connecting plate region of frame element 1

4 pin

5 bulge region

6 shell component

7 gap

8 threaded hole

30 cover element

31 screw.