CN216981690U - Brushless casing locating piece - Google Patents

Abstract

The application provides a brushless machine shell positioning block, which comprises a first connecting block and a second connecting block, wherein the first connecting block is annular, the first connecting block is positioned between one side, close to a front end cover, of a shell, the first connecting block and the axis of the shell are positioned on the same straight line, the second connecting block is annular, the axis of the second connecting block and the axis of the first connecting block are positioned on the same straight line, the second connecting block is positioned between the first connecting block and the shell, one side, far away from the second connecting block, of the first connecting block is provided with screw holes, the screw holes are distributed in an equiangular circumferential array around the axis of the first connecting block, the diameter of the inner wall of the second connecting block is larger than that of the shell, a connecting ring is fixedly connected to the end face of one end, close to the second connecting block, of the connecting ring is equal to the diameter of the inner wall of the shell, the diameter of the outer wall of the connecting ring is equal to that of the inner wall of the second connecting block, the inner wall of the second connecting block is in threaded connection with the outer wall of the connecting ring.

Description

Brushless casing locating piece

Technical Field

The application relates to the technical field of brushless casings, in particular to a brushless casing positioning block.

Background

The brushless motor is one of motors, the brushless machine shell is a shell of the brushless motor and is used for protecting parts such as an internal rotor and a coil, the brushless machine shell in the prior art is generally of a cylinder structure, two ends of the brushless machine shell are respectively and fixedly connected with a front end cover and a rear end cover, the rear end cover is integrally connected with a detachable fixed connection, the front end cover is generally detachably and fixedly connected with the shell, the detachable fixed connection is generally in a bolt fastening connection mode, due to machining errors and assembly errors, a certain floating range is formed in the axial distance between the front end cover and the shell, however, after the front end cover and the shell in the prior art are connected in a bolt fastening mode, the distance between the front end cover and the shell cannot be adjusted according to actual assembly conditions.

Disclosure of Invention

The application provides a brushless casing locating piece for solve the unable problem of adjusting of axial distance between front end housing and the casing among the prior art.

In order to achieve the above purpose, the embodiments of the present application propose the following technical solutions:

a brushless machine shell positioning block comprises a first connecting block and a second connecting block, the first connecting block is annular, the first connecting block is located between one side, close to a shell and a front end cover, of the shell, the axis of the first connecting block and the axis of the shell are located on the same straight line, the second connecting block is annular, the axis of the second connecting block and the axis of the first connecting block are located on the same straight line, the second connecting block is located between the first connecting block and the shell, a screw hole is formed in one side, far away from the second connecting block, of the first connecting block, the screw hole is distributed in an array mode around the equal-angle circumference of the axis of the first connecting block, the diameter of the inner wall of the second connecting block is larger than that of the shell, and a connecting ring is fixedly connected to the end face, close to one end of the second connecting block, of the shell, the inner wall diameter of the connecting ring is equal to the inner wall diameter of the shell, the central axis of the connecting ring is located on the same straight line with the central axis of the shell, the outer wall diameter of the connecting ring is equal to the inner wall diameter of the second connecting block, the inner wall of the second connecting block is in threaded connection with the outer wall of the connecting ring, and the spiral central axis of the second connecting block in threaded connection with the connecting ring is located on the same straight line with the central axis of the shell.

In some embodiments, the second connecting block has a first axial gap with the housing.

In some embodiments, the connection ring and the first connection block have a second axial gap therebetween.

In some embodiments, a positioning nut is sleeved on the connecting ring and is in threaded connection with the outer wall of the connecting ring, the positioning nut is located between the shell and the second connecting block, and the positioning nut and the second connecting block are in axial press fit.

In some embodiments, a first foam pad is disposed in the first axial gap, the first foam pad is disposed around the connection ring, one end of the first foam pad is in press fit with the end surface of the housing, the other end of the first foam pad is in press fit with the end surface of the positioning nut, and the first foam pad has elasticity.

In some embodiments, a second foam pad is disposed in the second axial gap, the second foam pad is disposed around the central axis of the connecting ring, one end of the second foam pad is in press fit with the end surface of the connecting ring, and the other end of the second foam pad is in press fit with the end surface of the first connecting block.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following descriptions are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural diagram of a brushless chassis according to an embodiment of the present application after a housing and a positioning block are assembled.

Reference numerals:

101. a first connection block; 102. a second connecting block; 103. a screw hole; 104. a connecting ring; 105. a first axial gap; 106. a second axial gap; 107. positioning a nut; 108. a first foam pad; 109. a second foam pad; 110. a housing; 111. a front end cap.

Detailed Description

Embodiments of the present application will be described in further detail below with reference to the drawings and examples. The following examples are intended to illustrate the present application but are not intended to limit the scope of the present application.

In the description of the embodiments of the present application, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the embodiments of the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present application, it should be noted that the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, unless explicitly stated or limited otherwise; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present application can be understood in specific cases by those of ordinary skill in the art.

In the embodiments of the present application, unless otherwise explicitly specified or limited, the first feature "on" or "under" the second feature may be directly contacted with the second feature or indirectly contacted with the second feature through an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or may simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," "some examples," or "possible implementations" or the like, 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 an embodiment of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

As shown in fig. 1, in an embodiment of the present application, a brushless housing positioning block is provided, the positioning block includes a first connecting block 101 and a second connecting block 102, the first connecting block 101 is ring-shaped, the first connecting block 101 is located between a surface of the housing 110, which is close to the front end cover 111, the first connecting block 101 is located on the same line as the central axis of the housing 110, the second connecting block 102 is ring-shaped, the central axis of the second connecting block 102 is located on the same line as the central axis of the first connecting block 101, the second connecting block 102 is located between the first connecting block 101 and the housing 110, a screw hole 103 is formed on a surface of the first connecting block 101, which is far from the second connecting block 102, the screw holes 103 are distributed in an equiangular circumferential array around the central axis of the first connecting block 101, an inner wall diameter of the second connecting block 102 is greater than an inner wall diameter of the housing 110, a connecting ring 104 is fixedly connected to an end surface of the housing 110, which is close to an end of the second connecting block 102, the diameter of the inner wall of the connecting ring 104 is equal to the diameter of the inner wall of the housing 110, the central axis of the connecting ring 104 is located on the same straight line with the central axis of the housing 110, the diameter of the outer wall of the connecting ring 104 is equal to the diameter of the inner wall of the second connecting block 104, the inner wall of the second connecting block 102 is in threaded connection with the outer wall of the connecting ring 104, and the spiral central axis of the threaded connection between the second connecting block 102 and the connecting ring 104 is located on the same straight line with the central axis of the housing 110.

In some embodiments, the second connecting block 104 has a first axial gap 105 with the housing 110.

In some embodiments, the connection ring 104 and the first connection block 101 have a second axial gap 106 therebetween.

In some embodiments, a positioning nut 107 is sleeved on the connecting ring 104, the positioning nut 107 is in threaded connection with the outer wall of the connecting ring 104, the positioning nut 107 is located between the housing 110 and the second connecting block 102, and the positioning nut 107 is in axial compression fit with the second connecting block 102.

In some embodiments, a first foam pad 108 is disposed in the first axial gap 105, the first foam pad 108 is disposed around the connection ring 104, one end of the first foam pad 108 is press-fitted to the end surface of the housing 110, the other end of the first foam pad 108 is press-fitted to the end surface of the retaining nut 107, and the first foam pad 108 has elasticity.

In some embodiments, a second foam pad 109 is disposed in the second axial gap 106, the second foam pad 109 is disposed around the central axis of the connection ring 104, one end of the second foam pad 109 is press-fitted to the end surface of the connection ring 104, and the other end of the second foam pad 109 is press-fitted to the end surface of the first connection block 101.

In the assembly process of the positioning block for a brushless machine housing provided by this embodiment, the rotor is first installed inside the housing 110, the first foam pad 108 is sleeved on the connection ring 104, the positioning nut 107 is screwed on the connection ring 104, the second foam pad 109 is flatly placed on the end surface of the first connection block 101 close to one end of the connection ring 104 (located inside the second connection block 102), the second connection block 102 is screwed on the connection ring 104, the front end cover 111 abuts against the side of the first connection block 101 away from the housing 110, the front end cover 111 is tightly connected to the first connection block 101 by inserting the bolt into the screw hole 103, the axial distance of the second connection block 102 is finely screwed until the axial distance of the front end cover 111 is within a preset range, the second connection block 102 is stopped to be screwed, the positioning nut 107 is pressed against the end surface of the second connection block 102, and the friction force between the screw teeth on the second connection block 102 and the connection ring 104 is increased, the second connecting block 104 is prevented from being loosened, and the first and second foam cushions 108 and 109 seal the first and second gaps from dust.

The above examples are only illustrative and not restrictive, and those skilled in the art can modify the embodiments of the present application as required after reading the present specification without any inventive contribution, but all of them are protected by patent laws within the scope of the claims of the present application.

Claims (6)

1. A brushless machine shell positioning block is characterized in that the positioning block comprises a first connecting block and a second connecting block, the first connecting block is annular, the first connecting block is located between one side, close to each other, of a shell and a front end cover, the central axis of the first connecting block and the central axis of the shell are located on the same straight line, the second connecting block is annular, the central axis of the second connecting block and the central axis of the first connecting block are located on the same straight line, the second connecting block is located between the first connecting block and the shell, a screw hole is formed in one side, far away from the second connecting block, of the first connecting block, the screw hole is distributed in an equiangular circumferential array around the central axis of the first connecting block, the inner wall diameter of the second connecting block is larger than that of the shell, and a connecting ring is fixedly connected to the end face, close to one end of the second connecting block, of the shell, the inner wall diameter of the connecting ring is equal to the inner wall diameter of the shell, the central axis of the connecting ring is located on the same straight line with the central axis of the shell, the outer wall diameter of the connecting ring is equal to the inner wall diameter of the second connecting block, the inner wall of the second connecting block is in threaded connection with the outer wall of the connecting ring, and the spiral central axis of the second connecting block in threaded connection with the connecting ring is located on the same straight line with the central axis of the shell.

2. The brushless housing positioning block of claim 1, wherein the second connection block has a first axial gap with the housing.

3. The brushless housing positioning block of claim 2, wherein the connection ring and the first connection block have a second axial gap therebetween.

4. The positioning block of the brushless machine shell according to claim 3, wherein a positioning nut is sleeved on the connection ring, the positioning nut is in threaded connection with an outer wall of the connection ring, the positioning nut is located between the housing and the second connection block, and the positioning nut and the second connection block are in press fit in an axial direction.

5. The brushless housing positioning block of claim 4, wherein a first foam pad is disposed in the first axial gap, the first foam pad is disposed around the connection ring, one end of the first foam pad is in press fit with the end surface of the housing, the other end of the first foam pad is in press fit with the end surface of the positioning nut, and the first foam pad has elasticity.

6. The positioning block of claim 5, wherein a second foam pad is disposed in the second axial gap, the second foam pad surrounding the central axis of the connection ring, one end of the second foam pad being in press fit with the end surface of the connection ring, and the other end of the second foam pad being in press fit with the end surface of the first connection block.

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