CN210469018U

CN210469018U - Electric machine

Info

Publication number: CN210469018U
Application number: CN201921605806.8U
Authority: CN
Inventors: 杜立新; 殷古鹏; 陶喆; 刘海珍; 刘倩; 王攀; 于鑫
Original assignee: Nasn Automotive Electronics Co Ltd
Current assignee: Nasn Automotive Electronics Co Ltd
Priority date: 2019-09-25
Filing date: 2019-09-25
Publication date: 2020-05-05
Anticipated expiration: 2029-09-25

Abstract

The utility model relates to a drive arrangement technical field discloses a motor, including casing and hou gai, be provided with rotor winding in the casing, rotor winding is sealed in the casing through the back lid, still include the transmission shaft, transmission shaft structure as an organic whole, the transmission shaft is including the motor shaft and the worm that link to each other, the motor shaft stretches into in the rotor winding and does not stretch out rotor winding, the motor shaft rotates with rotor winding is synchronous, the inner wall of back lid orientation motor shaft is planar structure, the one end of worm that does not link to each other with the motor shaft is through first revolution structure gyration support, the motor shaft is supported through second revolution structure gyration between rotor winding and first revolution structure, second revolution structure is located the casing. The motor shaft and the worm of the motor are of an integrated structure, the structure is simple, the length of the transmission shaft is reduced, and the space is saved; the motor shaft stretches into the rotor winding and does not stretch out the rotor winding, so that the inner wall of the rear cover facing the motor shaft is a plane, the structure is simple, the cost is low, and the occupied space is small.

Description

Electric machine

Technical Field

The utility model relates to a drive arrangement technical field especially relates to a motor.

Background

With the improvement of automobile electronization, more and more electronic brake products/electronic steering products are applied to the market, as shown in fig. 1, many transmission mechanisms in the products adopt a worm gear structure, wherein most of the worm 10 'and the motor are made into a split structure, and at the moment, the connection between the worm 10' and the motor needs to be connected through a coupler. Motor shaft 6 'links to each other with worm 10' through the shaft coupling subassembly, and the shaft coupling subassembly includes first shaft coupling 5 ', second shaft coupling 8' and elastic coupling 7 ', and first shaft coupling 5' links to each other with motor shaft 6 ', and second shaft coupling 8' links to each other with worm 10 ', and elastic coupling 7' links to each other first shaft coupling 5 'and second shaft coupling 8', and then links to each other motor shaft 6 'with worm 10'. Due to the arrangement of the coupling assembly, the overall length of the motor shaft 6 'and the worm 10' is prolonged, so that the motor occupies a large space. In addition, the motor shaft 6 'passes through the rotor winding 3', both ends are supported by the first bearing 2 'and the second bearing 4', the worm 10 'is supported by the third bearing 9' and the fourth bearing 11 ', one end of the motor shaft 6' close to the back cover 1 'needs to be provided with a corresponding supporting structure on the back cover 1' due to the first bearing 2 ', thereby increasing the complexity of the back cover 1' and further increasing the volume of the motor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a motor has solved the motor and has increased installation space through the coupling joint to and the complexity of back lid has been reduced.

To achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides a motor, including casing and hou gai, be provided with the rotor winding in the casing, the rotor winding passes through the back lid is sealed in the casing, still include the transmission shaft, transmission shaft structure as an organic whole, the transmission shaft is including the motor shaft and the worm that link to each other, the motor shaft stretches into just not stretch out in the rotor winding, the motor shaft with the rotor winding rotates in step, back lid orientation the inner wall of motor shaft is planar structure, the worm not with the one end that the motor shaft links to each other is supported through first gyration structure gyration, the motor shaft is in the rotor winding with support through second gyration structure gyration between the first gyration structure, second gyration structure is located in the casing.

The motor shaft and the worm of the transmission shaft of the motor are of an integrated structure, installation through a coupler is not needed, the structure is simple, cost is reduced, the length of the transmission shaft is reduced, and space is saved; the motor shaft stretches into the rotor winding and does not stretch out the rotor winding, and the first rotating structure and the second rotating structure are used for rotating and supporting, so that the rear cover does not need to press a bearing towards the inner wall of the motor shaft, the structure of the rear cover is simple, the production cost is reduced, and the occupied space is small.

As a preferable mode of the above motor, an end surface of an end of the motor shaft not connected to the worm is flush with an end surface of the rotor winding. The arrangement ensures that the contact area of the motor shaft and the rotor winding is large, and the synchronous rotation of the motor shaft and the rotor winding is ensured.

As a preferable mode of the above motor, an end of the motor shaft not connected to the worm is retracted into the rotor winding. This arrangement makes the motor shaft low in manufacturing accuracy as long as the length of the motor shaft is made smaller than the length of the rotor winding in the axial direction thereof.

As a preferable mode of the above motor, the motor shaft protrudes into the rotor winding by at least half of the length of the rotor winding in the axial direction thereof. This setting ensures the joint strength between motor shaft and the rotor winding.

As a preferable mode of the motor, the rear cover has a plate-like structure. The structure is simple, and the production cost is low.

As a preferable scheme of the motor, a stepped shaft is arranged at one end of the motor shaft, which is connected with the worm, and comprises a first shaft section and a second shaft section, wherein the outer diameter of the first shaft section is smaller than that of the second shaft section, the first shaft section is connected with the motor shaft, the second rotary structure is sleeved on the first shaft section, and the second shaft section is connected with the worm. The arrangement of the step shaft facilitates the installation and positioning of the second rotary structure.

As a preferable aspect of the above motor, a length of the first shaft section in an axial direction thereof is equal to a length of the second revolution structure in the axial direction thereof. This setting can carry on spacingly to the second revolution mechanic, avoids the second revolution mechanic to remove along the axial direction of motor shaft.

As a preferable mode of the above motor, the first shaft section has an outer diameter larger than an outer diameter of the motor shaft. This setting can carry out spacingly through the terminal surface that first shaft part and motor shaft link to each other to the rotor winding.

As a preferable scheme of the above motor, a vibration/noise reduction structure is disposed between the second rotation structure and the inner wall of the housing. The structure can be used for damping and reducing noise of the motor.

As a preferable mode of the above motor, the first rotary structure and the second rotary structure are both bearings. The structure is simple and the cost is low.

The utility model has the advantages that:

the motor provided by the utility model, the motor shaft of the transmission shaft and the worm are of an integrated structure, and the installation through a coupler is not needed, so that the structure is simple, the cost is reduced, the length of the transmission shaft is reduced, and the space is saved; the motor shaft stretches into the rotor winding and does not stretch out the rotor winding, and the first rotating structure and the second rotating structure are used for rotating and supporting, so that the rear cover does not need to press a bearing towards the inner wall of the motor shaft, the structure of the rear cover is simple, the production cost is reduced, and the occupied space is small.

Drawings

FIG. 1 is a schematic diagram of a prior art electric machine;

fig. 2 is a schematic structural diagram of the motor provided by the present invention.

In the figure:

1. a housing; 2. a rear cover; 3. a rotor winding; 41. a motor shaft; 42. a worm; 5. a first rotation structure; 6. a second swing structure; 7. a step shaft; 71. a first shaft section; 72. a second shaft section; 8. a shock-absorbing noise-reducing structure;

1', a rear cover; 2', a first bearing; 3', rotor winding; 4', a second bearing; 5', a first coupling; 6', a motor shaft; 7', an elastic coupling; 8', a second coupling; 9', a third bearing; 10', a worm; 11', and a fourth bearing.

Detailed Description

In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The utility model provides a motor, as shown in fig. 2, including stator and rotor and casing 1 and hou gai 2, the rotor winding 3 of rotor sets up in casing 1, and through the sealed casing 1 of back lid 2, still include the transmission shaft, the transmission shaft structure as an organic whole, the transmission shaft is including motor shaft 41 and the worm 42 that links to each other, motor shaft 41 stretches into in the rotor winding 3 and does not stretch out rotor winding 3, motor shaft 41 rotates with rotor winding 3 synchronous, the one end that does not link to each other with motor shaft 41 of worm 42 is supported through the 5 gyration of first gyration structures, motor shaft 41 is supported through 6 gyration of second gyration structures between rotor winding 3 and first gyration structures 5, second gyration structure 6 is located casing 1. The motor shaft 41 and the worm 42 of the transmission shaft of the motor are of an integrated structure, installation through a coupler is not needed, the structure is simple, cost is reduced, the length of the transmission shaft is reduced, and space is saved.

Because the one end of motor shaft 41 that stretches into rotor winding 3 is cantilever structure, motor shaft 41 stretches into in the rotor winding 3 and does not stretch out rotor winding 3, and back lid 2 is planar structure towards the inner wall of motor shaft 41, and through first revolution mechanic 5 and the gyration of second revolution mechanic 6 support for back lid 2 need not the pressure equipment bearing towards the inner wall of motor shaft 41, and the simple structure of back lid 2 has reduced manufacturing cost, and occupation space is little. Preferably, the rear cover 2 has a plate-shaped structure, which is simple and reduces the manufacturing cost. The connection between the motor shaft 41 and the rotor winding 3 belongs to the prior art, and is not described herein, as long as the motor shaft 41 and the rotor winding 3 can rotate synchronously. Preferably, the axis of the motor shaft 41 coincides with the axis of the rotor winding 3.

Alternatively, the end surface of the end of the motor shaft 41 not connected to the worm 42 is flush with the end surface of the rotor winding 3. This arrangement makes the contact area of the motor shaft 41 and the rotor winding 3 large, ensuring that the motor shaft 41 and the rotor winding 3 rotate synchronously. The end of the motor shaft 41 not connected to the worm 42 may also be retracted inside the rotor winding 3. This arrangement makes the manufacturing accuracy of the motor shaft 41 low as long as the length of the motor shaft 41 is made smaller than the length of the rotor winding 3 in the axial direction thereof.

Further, the motor shaft 41 protrudes into the rotor winding 3 by at least half the length of the rotor winding 3 in the axial direction thereof. This arrangement secures the coupling strength between the motor shaft 41 and the rotor winding 3.

As shown in fig. 2, a stepped shaft 7 is disposed at one end of the motor shaft 41 connected to the worm 42, the stepped shaft 7 includes a first shaft section 71 and a second shaft section 72, an outer diameter of the first shaft section 71 is smaller than an outer diameter of the second shaft section 72, the first shaft section 71 is connected to the motor shaft 41, the second rotary structure 6 is sleeved on the first shaft section 71, and the second shaft section 72 is connected to the worm 42. The step shaft 7 is provided to facilitate the installation and positioning of the second swing structure 6.

Preferably, the length of the first shaft section 71 in its axial direction is equal to the length of the second revolution structure 6 in its axial direction. This setting can carry on spacingly to second revolution mechanic 6, avoids second revolution mechanic 6 to remove along the axial direction of motor shaft 41.

The outer diameter of the first shaft section 71 is larger than the outer diameter of the motor shaft 41. This arrangement enables the rotor winding 3 to be restrained by the end face of the first shaft section 71 that is connected to the motor shaft 41.

Optionally, the housing 1 is provided with a mounting hole, and the motor shaft 41 extends into the housing 1 through the mounting hole.

Preferably, a vibration and noise reduction structure 8 is arranged between the second revolution structure 6 and the inner wall of the casing 1. The shock absorption and noise reduction structure 8 can be used for achieving shock absorption and noise reduction of the motor. Specifically, set up mounting groove in second revolution mechanic 6's circumference, vibration/noise reduction structure 8 installs in mounting groove, and mounting groove's setting can hold vibration/noise reduction structure 8, has played spacing effect moreover, avoids electrode vibration/noise reduction structure 8 to remove in-process.

In this embodiment, vibration/noise reduction structure 8 is 0 type circle, simple structure, and is with low costs, can realize flexible support, plays vibration/noise reduction's effect.

In this embodiment, the first and second

rotating structures

5 and 6 are both bearings. The transmission shaft is rotationally connected with the first rotating structure 5 and the second rotating structure 6, and the bearing structure is simple and low in cost. The transmission shaft is rotatably supported by the two bearings, so that the stable rotation of the transmission shaft is ensured.

In the description herein, it is to be understood that the terms "upper", "lower", "right", and the like are used in a descriptive sense or positional relationship based on the orientation or positional relationship shown in the drawings for convenience of description and simplicity of operation, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used merely for descriptive purposes and are not intended to have any special meaning.

In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

In addition, the foregoing is only the preferred embodiment of the present invention and the technical principles applied thereto. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims

1. A motor comprises a shell (1) and a rear cover (2), wherein a rotor winding (3) is arranged in the shell (1), the rotor winding (3) is sealed in the shell (1) through the rear cover (2), the motor is characterized by further comprising a transmission shaft, the transmission shaft is of an integrated structure and comprises a motor shaft (41) and a worm (42) which are connected, the motor shaft (41) extends into the rotor winding (3) and does not extend out of the rotor winding (3), the motor shaft (41) and the rotor winding (3) synchronously rotate, the inner wall of the rear cover (2) facing the motor shaft (41) is of a plane structure, one end, which is not connected with the motor shaft (41), of the worm (42) is rotatably supported through a first rotating structure (5), and the motor shaft (41) is rotatably supported between the rotor winding (3) and the first rotating structure (5) through a second rotating structure (6), the second rotary structure (6) is located in the housing (1).

2. The machine according to claim 1, characterized in that the end face of the end of the motor shaft (41) not connected to the worm (42) is flush with the end face of the rotor winding (3).

3. The machine according to claim 1, characterized in that the end of the motor shaft (41) not connected to the worm (42) is recessed inside the rotor winding (3).

4. A machine as claimed in claim 3, characterized in that the motor shaft (41) extends into the rotor winding (3) over at least half the length of the rotor winding (3) in its axial direction.

5. A machine as claimed in any one of claims 1-4, characterized in that the back cover (2) is of plate-like construction.

6. The motor according to any one of claims 1 to 4, wherein a step shaft (7) is arranged at one end of the motor shaft (41) connected with the worm (42), the step shaft (7) comprises a first shaft section (71) and a second shaft section (72), the outer diameter of the first shaft section (71) is smaller than that of the second shaft section (72), the first shaft section (71) is connected with the motor shaft (41), the second rotary structure (6) is sleeved on the first shaft section (71), and the second shaft section (72) is connected with the worm (42).

7. An electric machine according to claim 6, characterized in that the length of the first shaft section (71) in its axial direction is equal to the length of the second revolution structure (6) in its axial direction.

8. The electric machine according to claim 7, characterized in that the outer diameter of the first shaft section (71) is larger than the outer diameter of the motor shaft (41).

9. An electric machine according to any of claims 1-4, characterized in that a vibration and noise reducing structure (8) is arranged between the second revolution structure (6) and the inner wall of the housing (1).

10. A machine as claimed in any one of claims 1-4, characterized in that the first and second rotating structures (5, 6) are both bearings.