阅读说明：本技术 旋转电机和用于旋转电机的支脚紧固系统 (Rotating electrical machine and leg fastening system for rotating electrical machine ) 是由 乔纳森·阿迪尔森·帕西格 帕特里克·拉芬 亚历山大·施密特·费雷拉 莱安德罗·费利佩·马林·基 于 2019-07-08 设计创作，主要内容包括：本发明涉及一种具有支脚紧固系统的旋转电机,该支脚紧固系统包括至少一个容纳部分,该容纳部分包括至少一个容纳和引导部分(2)和至少一个锁定部分(3)；其中,至少一个容纳和引导部分(2)构造成容纳支脚(4)的突出部分(5)；并且至少一个锁定部分(3)构造成与支脚的卡扣配合部分(6)配合。(The invention relates to a rotating electrical machine with a foot fastening system comprising at least one receiving portion comprising at least one receiving and guiding portion (2) and at least one locking portion (3); wherein the at least one receiving and guiding portion (2) is configured to receive a protruding portion (5) of the foot (4); and at least one locking portion (3) is configured to cooperate with a snap-fit portion (6) of the foot.)

1. A rotating electrical machine comprising:

a housing enclosing an active core having a rotor and a stator, the rotor mounted on a shaft, wherein the rotating electrical machine is characterized by a leg fastening system comprising: at least one housing portion formed in the housing, the at least one housing portion comprising at least one housing and guide portion (2) and at least one locking portion (3); said at least one receiving and guiding portion (2) being configured to receive a projecting portion (5) of a foot (4); and

the at least one locking portion (3) is configured to cooperate with a snap-fit portion (6) of the foot.

2. Rotating electrical machine according to claim 1, wherein the foot fastening system comprises two lateral receiving and guiding portions (2) and a central locking portion (3) arranged between the lateral receiving and guiding portions (2), and wherein the foot (4) comprises two respective lateral protruding portions (5) and a central snap-fit portion (6) arranged between the lateral protruding portions (5).

3. A rotating electric machine according to claim 2, wherein the foot fastening system comprises two pairs of lateral receiving and guiding portions (2) and a central locking portion (3) arranged between the pairs of receiving and guiding portions (2), and wherein the feet (4) comprise respective two pairs of lateral protrusions (5) and a central snap-fit portion (6) arranged between the pairs of lateral protrusions (5).

4. The rotary electric machine according to any one of claims 1 to 3, wherein:

said at least one housing and guide portion (2) comprising a channel having an open end (2a), a closed end (2b) and an outer wall, said outer wall having a longitudinal split (2 c);

at least one projecting portion (5) is formed as a track portion having a neck (5a) and a head (5b), the width of the neck (5a) being smaller than the smaller width of the longitudinal split (2c) of the receiving and guiding portion (2), and the width of the head (5b) being larger than the smaller width of the longitudinal split (2 c).

5. A rotating electric machine according to claim 4, wherein the longitudinal split (2c) of the at least one receiving and guiding portion (2) narrows along the passage such that the width of the longitudinal split (2c) near the open end (2a) of the passage is larger than the width of the longitudinal split (2c) near the closed end (2b) of the passage.

6. The rotary electric machine according to any one of claims 1 to 5, wherein:

the locking portion (3) comprises a protruding wall; and is

The central snap-fit portion (6) of the leg (4) comprises a cut-out extension (6a) having a shoulder (6b) on the free end so as to form a resilient portion, the shoulder (6b) of which cooperates with the projecting wall.

7. The rotating electrical machine according to claim 6, wherein the foot (4) comprises a flat base (4a) and the cut-out extension (6a) of the snap-fit portion (6) is formed in the base (4a) by forming a U-shaped cut-out (4b) in the flat base (4 a).

8. A leg fastening system for a rotary electric machine, comprising: a housing enclosing an active core having a rotor and a stator, the rotor mounted on a shaft, characterized in that:

the housing has an accommodation portion comprising at least one accommodation and guide portion (2) and at least one locking portion (3), an

The foot (4) comprises at least one protruding portion (5) and a snap-fit portion (6), said protruding portion (5) being configured to be received in said at least one receiving and guiding portion (2), said snap-fit portion (6) being configured to cooperate with said at least one locking portion (3).

9. Leg fastening system according to claim 8, wherein the leg fastening system comprises two pairs of lateral receiving and guiding portions (2) and a locking portion (3) arranged centrally between the lateral receiving and guiding portions (2), and wherein the legs (4) comprise two respective lateral protruding portions (5) and a central snap-fit portion (6) arranged between the protruding portions (5).

10. Leg fastening system according to claim 9, wherein the leg fastening system comprises two pairs of lateral receiving and guiding portions (2) and a locking portion (3) centrally arranged between the pairs of lateral receiving and guiding portions (2), and wherein the legs (4) comprise a respective two pairs of lateral protruding portions (5) and a central snap-fit portion (6) arranged between the pairs of lateral protruding portions (5).

11. The leg fastening system according to any one of claims 8 to 10, wherein:

said at least one housing and guide portion (2) comprising a channel having an open end (2a), a closed end (2b) and an outer wall, said outer wall having a longitudinal split (2 c);

at least one projecting portion (5) is formed as a track portion having a neck (5a) and a head (5b), the width of the neck (5a) being smaller than the smaller width of the longitudinal split (2c) of the receiving and guiding portion (2), and the width of the head (5b) being larger than the smaller width of the longitudinal split (2 c).

12. Leg fastening system according to claim 11, wherein the longitudinal split (2c) of the at least one receiving and guiding portion (2) narrows along the channel such that the width of the longitudinal split (2c) near the open end (2a) of the channel is larger than the width of the longitudinal split (2c) near the closed end (2b) of the channel.

13. The leg fastening system according to any one of claims 8 to 12, wherein:

the locking portion (3) comprises a protruding wall; and

the central snap-fit portion (6) of the leg (4) comprises a cut-out extension (6a) having a shoulder (6b) on the free end so as to form a resilient portion, the shoulder (6b) of which cooperates with the protruding wall.

14. Leg fastening system according to claim 13, wherein the leg (4) comprises a flat base (4a) and the cut-out extension (6a) of the snap-fit part (6) is formed in the base (4a) by forming a U-shaped cut-out (4b) in the flat base (4 a).

Technical Field

The present invention relates to a rotary electric machine, and more particularly, to a rotary electric machine having a leg fastening system.

Background

Several different types of motor housings are known in the art, the motor housings mainly comprising a housing in which parts and components of the machine are enclosed.

As known to those skilled in the art, the housing is adapted to enclose a plurality of internal components and is also adapted to house a series of external fittings and components which are secured to the housing by different fastening systems.

For example, the housing typically includes a support or attachment means, such as a base or even other machinery, for connecting and stabilizing the housing to a surface. Such support means are commonly referred to as "feet".

In known machines, the foot is fixed to the casing by more than one screw, which must be unscrewed to remove the foot. While this type of solution provides some flexibility, it is time consuming and requires the use of additional components (screws).

Disclosure of Invention

It is an object of the present invention to provide a rotating electric machine with a leg fastening system that provides fastening versatility without having a large impact on the manufacturing and assembly process of the electric machine.

Another object of the present invention is to provide a leg fastening system of an electric machine which ensures fastening and high robustness without causing a great influence on the manufacturing and assembling processes of the electric machine.

It is another object of the present invention to provide a rotary electric machine with a foot fastening system, wherein the foot attachment is provided by a snap fit.

Another object of the present invention is to provide a rotary electric machine with a foot fastening system that can be easily and simply mounted to the housing by only two movements: a first vertical approaching movement and a second axial displacing movement until a pressure lock occurs.

The invention relates to a rotating electrical machine comprising a housing enclosing an active core with a rotor and a stator, the rotor being mounted on a shaft, wherein the housing has a leg fastening system comprising at least one housing portion formed in the housing, comprising a housing and guide portion and a locking portion; wherein the at least one receiving and guiding portion is configured to receive the protruding portion of the foot; and the at least one locking portion is configured to engage with a snap fit of the leg.

In one embodiment of the invention, the fastening system comprises two lateral receiving and guiding portions and a central locking portion disposed between the lateral receiving and guiding portions. In this embodiment, the legs include respective lateral projections and a central snap-fit portion disposed between the lateral projections.

In another embodiment of the invention, the fastening system comprises two pairs of lateral receiving and guiding portions and a central locking portion disposed between the pairs of lateral receiving and guiding portions, and wherein the legs comprise two corresponding pairs of projecting portions and a central snap-fit portion disposed between the pairs of lateral projecting portions.

In one embodiment of the invention, the at least one receiving and guiding portion comprises a channel having an open end, a closed end and an outer wall, the outer wall having a longitudinal split; and the at least one projection is shaped as a track portion having a neck with a width smaller than the smaller width of the longitudinal split of the receiving and guiding portion and a head with a width larger than the smaller width of the longitudinal split.

The longitudinal split of the at least one receiving and guiding portion may be narrowed along the channel such that a width of the split near an open end of the channel is larger than a width of the split near the closed end of the channel.

In one embodiment of the invention, the locking portion comprises a protruding wall; and the central snap-fit portion of the leg comprises a notched extension having a shoulder at the free end to form a resilient portion, the shoulder of the resilient portion engaging the projecting wall.

The legs may include a surface that may be substantially flat or uneven, and the cut-out extensions create the snap-fit portions in the surface by forming U-shaped cuts in the surface.

Drawings

The invention will be described in more detail below with reference to the accompanying drawings, in which:

fig. 1 is a side view of an electric machine according to the invention;

FIG. 2 is a bottom perspective view of the motor according to the present invention, with the housing shown without the legs;

fig. 3 is an enlarged view of the receiving and guiding portion of the receiving portion of the motor according to the present invention;

fig. 4 is a top perspective view of a foot of a motor according to the present invention; and

fig. 5 is a bottom perspective view of a leg of a motor according to the present invention.

Detailed Description

Fig. 1 shows a motor incorporating a leg fastening system according to one embodiment of the invention.

Although the invention is described as being incorporated in an electric motor, it should be understood that the solution of the invention can also be applied to other electric machines comprising a casing, for example any rotating electric machine having such characteristics.

As can be seen from fig. 1, the electric motor comprises a housing divided in the axial direction 1, which is formed by a first housing part 1a and a second housing part 1 b.

It should be noted, however, that the invention may be embodied in motors having housings of different construction characteristics, for example, of the type comprising a one-piece main housing with end caps.

In fig. 1, the lower part of the housing has a leg fastening system according to one embodiment of the invention.

The fastening system of the invention comprises a receiving portion comprising a receiving and guiding portion 2 and at least one locking portion 3, the locking portion 3 receiving a corresponding portion of a foot 4.

In the embodiment shown in the figures, the receiving portion comprises two pairs of receiving and guiding portions 2 and locking portions 3. In this embodiment, the two pairs of receiving and guiding portions 2 are spaced apart from each other, whereby the locking portion 3 is arranged centrally between the spaced apart pairs. The locking portion 3 may be arranged on any housing part as long as it is located between the positions of the receiving and guiding portions 2, and the receiving portion may have only two spaced receiving and guiding portions 2.

Fig. 3 shows an enlarged view of the receiving and guiding portion 2. As can be seen in this figure, the receiving and guiding portion 2 comprises a channel having an open end 2a and a closed end 2 b. The outer wall of the channel has a longitudinal split 2c so that the channel cavity has a T-shaped cross-section.

In one embodiment of the invention, the longitudinal split 2c narrows along the channel such that the width of the split near the open end 2a of the channel is larger than the width of the split near the closed end 2b of the channel.

As best shown in fig. 2, the locking portion 3 comprises a protruding wall. Of course, the locking portion may have another shape, such as wall segments close to each other.

Fig. 4 and 5 show one embodiment of the foot of one embodiment of the fastening system of the present invention.

The foot 4 has at least one projecting portion 5 and a snap-fit portion 6, the projecting portion 5 being configured to be received by the at least one receiving and guiding portion 2, the snap-fit portion 6 cooperating with the locking portion 3.

As shown in fig. 4 and 5, in one embodiment of the invention, the legs comprise two pairs of lateral projections 5 and a central snap-fit portion 6 arranged between the pairs of lateral projections 5.

The central snap-fit part 6 of the leg comprises a cut-out extension 6a with a shoulder 6b on the free end to form a resilient part, the shoulder 6b of the resilient part cooperating with the locking part 3 of the housing.

In the embodiment shown in fig. 4 and 5, the foot 4 comprises a surface 4a, a cut-out extension 6a of the snap-fit part 6 being created in the surface 4a by forming a U-shaped cut-out 4b in the surface 4 a. The surface may be flat, as shown in the figures, or may have any other suitable form.

The lateral projection 5 is preferably formed as a track section, the neck 5a of which has a width smaller than the smaller width of the longitudinal split 2c of the receiving and guiding section 2 and the head 5b of which has a width larger than the smaller width of the longitudinal split 2 c.

For assembly, the feet are brought vertically to the housing so that the projecting portions 5 are received by the respective receiving and guiding portions 2. Thereafter, the legs are axially displaced until locking occurs by snap-fit between the central snap-fit part 6 and the locking part 3 of the housing (a "snap-fit" locking type, wherein the shoulders 6b of the snap-fit part 6 press against the locking part 3 of the housing).

Thus, the mounting of the foot to the housing can be easily and simply performed by only two movements: a first vertical approaching movement and a second axial displacing movement until a pressure lock occurs.

In the embodiment of the invention shown in the figures, in which the machine housings are separated in the axial direction, each receiving and guiding portion 2 of each pair of receiving and guiding portions 2 is arranged in one of the housing portions 1a, 1 b.

Thus, the projecting portions 5 of each pair of transverse projecting portions 5 are axially spaced apart, corresponding to the axial spacing between the receiving and guiding portions 2 of each pair of receiving and guiding portions 2.

In one embodiment of the invention, the housing 1 of the electrical machine can have more than one receiving portion, so that three different possibilities of the leg assembly 4 are provided.

As shown, the foot also has holes 7 for screws used to attach the foot to a structure or machine (not shown).

Having described examples of embodiments of the invention, it is to be understood that the scope of the invention includes other possible variations of the inventive concepts described, limited only by the language of the appended claims, including the possible equivalents.