CN209823547U - Novel motor die-casting end cover tang structure - Google Patents

Abstract

The utility model discloses a novel motor die-casting end cover tang structure relates to motor end cover structure field. The traditional motor end cover seam allowance adopts an outer seam allowance, the seam allowance plane is an integral plane, the seam allowance and a bearing chamber need to be clamped and milled at one time, the machining process is complex, the production is inconvenient, the circumferential direction is not positioned, and the circumferential direction is easy to rotate during installation. The utility model discloses a 4 independent tang positioning seats are as the tang structure, and the tang up end plane and the stator core terminal surface of tang positioning seat paste mutually, and the planar centre in tang up end is equipped with bellied reference column and stator core's pilot hole and matches, is equipped with the end in the middle of the reference column and to the through hole so that the installation of fastener. The positioning installation in the circumferential direction and the radial direction is realized, the end cover spigot structure of the spigot positioning seat is used as a reference for milling the bearing chamber, the concentricity of the spigot structure and the bearing chamber can be ensured, the processing and installation difficulty of the end cover is reduced, the traditional matching of the iron core and the outer spigot of the end cover is eliminated, and the die complexity of the iron core punching sheet is reduced.

Description

Novel motor die-casting end cover tang structure

Technical Field

The utility model relates to a motor end cover structure field especially relates to a novel motor die-casting end cover tang structure.

Background

The end cover of the motor is a fulcrum of two bearings of the rotor, a connecting part with the stator part, an assembling part of the motor and a used machine, a part for fixing the positions of the brush, the velometer and the terminal box, and an important supporting part for forming the outline of the motor.

In the past, the similar structure is only arranged on a sheet metal part, a die casting never involves, and on the basis, the spigot structure of the similar sheet metal part is optimized and used for a die casting end cover.

The contact surface of usual die-casting end cover and iron core is whole plane, connects fixed mode and prevents radial dislocation removal through addding the tooth pad, and in the assembling process, the phenomenon that leaks to put tooth pad or tooth pad and fall out takes place occasionally for motor joint strength descends, and not only assembly process is loaded down with trivial details, has also caused a large amount of defective products and has produced.

The tooth pad is removed, the connection strength of the motor is considered, the source of the defective products is eliminated, the spigot structure of the end cover is produced in due course, as shown in fig. 5, the traditional spigot structure (105) is additionally arranged on the periphery of the die-casting end cover, the measures are taken by most manufacturers, and for ensuring the coaxiality of the spigot of the end cover and the bearing chamber, the spigot and the bearing chamber need to be clamped and milled at one time, so that the manufacturing process of the main shaft of the equipment is complex, the difficulty of tool adjustment in the production process is improved simultaneously, and great inconvenience is brought to production. Meanwhile, as shown in fig. 6, in order to effectively limit the rotation around the axial direction, for example, the contact part of the punching iron core and the end cover seam allowance is changed into a step structure (202), the punching of the iron core punching is more complicated.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that solves and the technical task who provides are perfect and improve prior art scheme, provide a novel motor die-casting end cover tang structure to reduce the processing of end cover and the installation degree of difficulty and aim at. Therefore, the utility model adopts the following technical scheme.

The utility model provides a novel motor die-casting end cover tang structure, includes the end cover main part, the centre of end cover main part be equipped with the bearing chamber, the periphery of end cover main part surround the equipartition and have a plurality of structures and the tang positioning seat that the size is the same, every tang positioning seat all includes the tang upper end plane that pastes mutually with the stator core terminal surface and the tang lower extreme plane relative with this tang upper end plane, be equipped with bellied cylindrical reference column in the middle of the tang upper end plane, the centre of reference column is equipped with the end to the through hole, the external diameter of this reference column matches with stator core's pilot hole internal diameter, the quantity of reference column ≦ stator core's pilot hole quantity, the position of reference column is corresponding with stator core's pilot hole position. The traditional peripheral positioning seam allowance of the end cover is changed into positioning seat positioning, positioning between the traditional peripheral positioning seam allowance and a stator core assembling hole is realized through a positioning column to realize positioning installation of the end cover, a rotation stopping effect in the positioning installation is realized, the installation is simpler, meanwhile, the machining process of the traditional end cover seam allowance is eliminated, the manufacturing difficulty and the tool changing difficulty of milling equipment are reduced, an anti-skidding tooth cushion is also reduced, a bearing chamber is milled by taking the end cover seam allowance structure of the seam allowance positioning seat as a reference, the concentricity of the seam allowance structure and the bearing chamber can be naturally ensured, the processing and installation difficulty of the end cover is reduced, and the quality of the end cover can be effectively ensured; because the traditional positioning fit between the iron core and the outer spigot of the end cover is removed, the structural complexity of the iron core is reduced, and the die complexity of the iron core punching sheet is reduced.

As a preferable technical means: all be connected with the strengthening rib between per two adjacent tang positioning seats, the strengthening rib is located the limit portion of end cover main part and connects the adjacent bight of two tang positioning seats, and the height of strengthening rib is less than the tang up end plane. Can effectively promote structural strength, prevent that the tang positioning seat from guaranteeing the stability of the structural configuration of tang positioning seat because of structural stress deformation.

As a preferable technical means: the two vertical ridge lines of the inner corner and the outer corner of the spigot positioning seat which are not connected with the reinforcing ribs are in arc angle transition or chamfer angle transition. The use of materials can be effectively reduced, and the safety of contact is improved.

As a preferable technical means: the periphery of the upper end of the positioning column is chamfered or rounded. The matching guide of the fastener during installation is facilitated.

As a preferable technical means: the outside of reference column be equipped with around the recess, the medial surface that encircles the recess is coplanar with reference column outer peripheral face. Should encircle the burr that the recess can hold the reference column and scrape the extrusion when being connected with the iron core pilot hole, be favorable to the uniformity of iron core plane and end cover contact surface, avoid scraping the burr of extrusion and fall into and paste the fitting surface mutually and the emergence of propping up the iron core phenomenon appears.

As a preferable technical means: the spigot upper end plane is provided with a groove, the groove penetrates through the surrounding groove and the spigot positioning seat outer side face, and the bottom face of the groove is level with the bottom face of the surrounding groove. The burr in the surrounding groove can be blown out through the groove.

As a preferable technical means: the through hole is positioned on one side of the plane of the lower end of the spigot and is in transition along a peripheral chamfer or an arc. The matching guide of the fastener during installation is facilitated.

As a preferable technical means: the number of the seam allowance positioning seats is 4. The quantity is less, with the square stator core's of conventional square stator four corners pilot hole just in time one-to-one, can effectively guarantee the installation intensity of end cover, reduces the complexity of structure, reduces material cost and mould cost.

As a preferable technical means: the end cover is formed by aluminum alloy or reinforced plastic through one-step die casting. The structure intensity is high, and the die-casting technique is mature, and weight is lighter, and batch production is effectual.

Has the advantages that:

1. the traditional peripheral positioning seam allowance of the end cover is changed into positioning seat positioning, so that the rotation stopping effect during positioning and mounting is realized, and the mounting is simpler; the machining process of the traditional end cover seam allowance is omitted, the manufacturing difficulty and the tool changing difficulty of milling equipment are reduced, meanwhile, the traditional anti-skidding tooth pad is omitted, the bearing chamber is milled by taking the end cover seam allowance structure of the seam allowance positioning seat as a reference, the concentricity of the seam allowance structure and the bearing chamber can be naturally ensured, the machining and mounting difficulty of the end cover is reduced, and the quality of the end cover can be effectively ensured; the positioning fit between the traditional iron core and the outer spigot of the end cover is eliminated, the structural complexity of the iron core is reduced, and the die complexity of the iron core punching sheet is reduced.

2. The setting of strengthening rib has effectively promoted structural strength, prevents that the tang positioning seat from guaranteeing the stability of the structural configuration of tang positioning seat because of structural stress deformation.

3. The periphery of the upper end of the positioning column and the through hole are positioned on one side of the plane of the lower end of the spigot, and the periphery is chamfered, so that the matching and guiding of the fastener during installation are facilitated.

4. The burr of extruding can be scraped when setting up around the recess and can hold the reference column and be connected with the iron core pilot hole, is favorable to the uniformity of iron core plane and end cover contact surface, avoids scraping the burr of extruding and props up the iron core phenomenon, and the setting of slot is convenient for the air-blowing discharge burr.

Drawings

Fig. 1 is a schematic view of the assembly position of the end cover and the stator core of the present invention.

Fig. 2 is a schematic view of the end cap structure of the present invention.

Fig. 3 is an enlarged schematic view of a portion a in fig. 2 according to the present invention.

Fig. 4 is the sectional view of the spigot positioning seat and the stator core of the present invention.

Fig. 5 is a schematic view of a conventional seam allowance structure of a related art end cap.

Fig. 6 is a schematic view of a stator core step structure in the prior art matched with a conventional spigot structure of an end cover.

In the figure: 1-end cap; 2-a stator core; 101-an end cap body; 102-a bearing chamber; 103-reinforcing ribs; 104-seam allowance positioning seat; 105-conventional spigot construction; 10401-plane of upper end of seam allowance; 10402-a locating post; 10403-surrounding the groove; 10404 — trench; 10405-plane lower end of seam allowance; 10406-a through hole; 201-assembly holes; 202-step structure.

Detailed Description

The technical solution of the present invention will be further described in detail with reference to the accompanying drawings.

As shown in fig. 1-4, a novel motor die-casting end cover spigot structure includes an end cover main body 101, a bearing chamber 102 is disposed in the middle of the end cover main body 101, 4 spigot positioning seats 104 having the same structure and size are uniformly distributed around the periphery of the end cover main body 101, each spigot positioning seat 104 includes a spigot upper end plane 10401 attached to the end surface of a stator core 2 and a spigot lower end plane 10405 opposite to the spigot upper end plane 10401, a raised cylindrical positioning column 10402 is disposed in the middle of the spigot upper end plane 10401, an end through hole 10406 is disposed in the middle of the positioning column 10402, the outer diameter of the positioning column 10402 matches with the inner diameter of an assembling hole 201 of the stator core 2, and the positions of the positioning column 10402 correspond to the positions of 4 assembling holes 201 of the stator core 2.

In order to improve the structural strength, a reinforcing rib 103 is connected between every two adjacent seam allowance positioning seats 104, the reinforcing rib 103 is located at the edge of the end cover main body 101 and connected with adjacent corners of the two seam allowance positioning seats 104, and the height of the reinforcing rib 103 is lower than the seam allowance upper end plane 10401. The structural strength can be effectively improved, the spigot positioning seat 104 is prevented from deforming due to structural stress, and the stability of the structural shape of the spigot positioning seat 104 is ensured.

In order to improve the safety, two vertical ridge lines of the inner corner and the outer corner of the seam allowance positioning seat 104, which are not connected with the reinforcing rib 103, are in circular arc angle transition. The usage amount of materials can be effectively reduced, the contact safety is improved, and chamfer transition can be adopted for replacement.

In order to facilitate the assembly and the guiding of the fastener, the periphery of the upper end of the positioning column 10402 is chamfered or rounded; the through hole 10406 is located at one side of the seam allowance lower end plane 10405 along a peripheral chamfer or a circular arc transition. The matching guide of the fastener during installation is facilitated.

In order to avoid that the scraped burrs fall into the matching surfaces, a surrounding groove 10403 is formed in the outer side of the positioning column 10402, and the inner side surface of the surrounding groove 10403 is coplanar with the outer peripheral surface of the positioning column 10402. Should encircle recess 10403 and can hold the burr of scraping the extrusion when reference column 10402 is connected with iron core pilot hole 201, be favorable to the uniformity of iron core plane and end cover 1 contact surface, avoid scraping the burr of extrusion and fall into the matching surface of pasting mutually and the emergence of propping up the iron core phenomenon appears.

In order to discharge burrs, a groove 10404 is arranged on the spigot upper end plane 10401, the groove 10404 penetrates through the surrounding groove 10403 and the outer side surface of the spigot positioning seat 104, and the bottom surface of the groove 10404 is flush with the bottom surface of the surrounding groove 10403. Burrs in the surrounding recess 10403 can be blown out by air through the groove 10404.

In order to obtain higher cost performance, the end cover 1 is formed by one-step die casting of aluminum alloy or reinforced plastic. The structure intensity is high, and the die-casting technique is mature, and weight is lighter, and batch production is effectual, the sexual valence relative altitude.

Through changing the traditional periphery location tang of end cover 1 into the positioning seat location, realize through reference column 10402 and realize the location installation of end cover 1 with the location between 2 pilot holes 201 of stator core, the spline effect when having realized the location installation, the installation is simpler, the machining process who has removed traditional end cover 1 tang from simultaneously, the preparation degree of difficulty and the tool changing degree of difficulty that has reduced milling equipment, anti-skidding tooth pad has been subtracted simultaneously, mill bearing chamber 102 for the benchmark with 1 tang structure of end cover 1 of tang positioning seat 104, can guarantee naturally the concentricity of this tang structure and bearing chamber 102, the processing and the installation degree of difficulty of end cover 1 have been reduced, can effectively guarantee end cover 1 quality.

The above novel end cap structure for die-casting motor shown in fig. 1-4 is a specific embodiment of the present invention, and it has been demonstrated that the substantial features and the progress of the present invention can be modified according to the actual use requirement, and the modifications of the same aspects such as shape and structure are all within the protection scope of the present solution.

Claims (9)

1. The utility model provides a novel motor die-casting end cover tang structure, includes end cover main part (101), the centre of end cover main part (101) be equipped with bearing chamber (102), its characterized in that: the periphery of end cover main part (101) surround the equipartition and have a plurality of structures and the same tang positioning seat (104) of size, every tang positioning seat (104) all include tang upper end plane (10401) that pastes mutually with stator core (2) terminal surface and tang lower extreme plane (10405) relative with this tang upper end plane (10401), the centre of tang upper end plane (10401) is equipped with bellied cylindrical reference column (10402), the centre of reference column (10402) is equipped with end to through hole (10406), the external diameter of this reference column (10402) matches with pilot hole (201) internal diameter of stator core (2), the quantity of reference column (10402) is less than the pilot hole (201) quantity of stator core (2), the position of reference column (10402) corresponds with the pilot hole (201) position of stator core (2).

2. The novel motor die-casting end cover spigot structure according to claim 1, wherein: and a reinforcing rib (103) is connected between every two adjacent seam allowance positioning seats (104), the reinforcing rib (103) is positioned at the edge part of the end cover main body (101) and connected with the adjacent corner parts of the two seam allowance positioning seats (104), and the height of the reinforcing rib (103) is lower than the upper end plane (10401) of the seam allowance.

3. The novel motor die-casting end cover spigot structure according to claim 2, wherein: two vertical ridge lines of the inner angle and the outer angle of the seam allowance positioning seat (104) which are not connected with the reinforcing rib (103) are in arc angle transition or chamfer angle transition.

4. The novel motor die-casting end cover spigot structure according to claim 1, wherein: the periphery of the upper end of the positioning column (10402) is chamfered or rounded.

5. The novel motor die-casting end cover spigot structure according to claim 1, wherein: and a surrounding groove (10403) is formed in the outer side of the positioning column (10402), and the inner side surface of the surrounding groove (10403) is coplanar with the peripheral surface of the positioning column (10402).

6. The novel motor die-casting end cover spigot structure according to claim 5, wherein: a groove (10404) is formed in the spigot upper end plane (10401), the groove (10404) penetrates through the surrounding groove (10403) and the outer side face of the spigot positioning seat (104), and the bottom face of the groove (10404) is flush with the bottom face of the surrounding groove (10403).

7. The novel motor die-casting end cover spigot structure according to claim 1, wherein: the through hole (10406) is located on one side of the lower end plane (10405) of the spigot and is in circumferential chamfer or arc transition.

8. The novel motor die-casting end cover spigot structure according to claim 1, wherein: the number of the seam allowance positioning seats (104) is 4.

9. The novel motor die-casting end cover spigot structure according to claim 1, wherein: the end cover (1) is formed by one-step die casting of aluminum alloy or reinforced plastic.