CN215682010U - Upper bracket structure for fire insulation - Google Patents
Upper bracket structure for fire insulation Download PDFInfo
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- CN215682010U CN215682010U CN202121642003.7U CN202121642003U CN215682010U CN 215682010 U CN215682010 U CN 215682010U CN 202121642003 U CN202121642003 U CN 202121642003U CN 215682010 U CN215682010 U CN 215682010U
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- mounting
- upper bracket
- commutator
- brush
- hole
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Abstract
The utility model relates to an upper bracket structure of a fire-isolating flower. The utility model comprises the following steps: a housing, a brush mounting structure; the shell is internally provided with a bearing mounting structure, a commutator mounting structure and a tempering structure, the tempering structure is arranged between the bearing mounting structure and the commutator mounting structure, and the tempering structure is used for blocking commutation sparks generated between the commutator and the electric brush; the brush mounting structure extends in the casing side, brush mounting structure is including being used for the spacing fixed knot of torsional spring installation to construct. According to the upper bracket structure for the fire insulation spark, the reversing spark generated between the commutator body and the electric brush body can be prevented from flying out through the tempering structure, the use is safe, the bearing can be effectively protected, the integral structure is small in size, and the production and the use are convenient.
Description
Technical Field
The utility model relates to the technical field of series excited machines, in particular to an upper bracket structure for isolating sparks.
Background
Most of the existing motors in the field of series excitation dust collector motors are divided into a bracket type and a shell type, wherein the bracket type motor is divided into a dry type and a dry and wet type so as to adapt to different tool environments, the bracket type dry type motor generally comprises an air collecting cover, an upper bracket, a stator, a rotor, a fixed impeller, a movable impeller, an impeller cover electric brush assembly and the like, wherein a rotor commutator and an electric brush are in friction insertion connection, the contact surface of the commutator and the electric brush is divided into 24 commutator segments, when the motor is electrified, the electric brush and the commutator are in sliding friction, and because the electric brush and the commutator segments are in power-on and power-off circulation continuously, electric appliance sparks are generated at the contact part of the electric brush and the commutator segments, the following problems exist:
firstly, because sliding friction exists between the electric brush and the commutator, if the electric brush and the commutator are not sufficiently worn, the spark of the motor is enlarged, when the electric brush is used as a paint spray gun, the large spark is unacceptable when the paint spray gun operates, and the safety risk of the whole machine is large;
secondly, because no effective isolation measure exists between the bearing and the commutator, when sparks are pressed in the upper bracket, the temperature of the bearing close to the commutator is too high, so that the evaporation speed of grease of the bearing is accelerated, and the service life of the motor is short;
thirdly, because the requirement on the overall dimension of the spray gun motor is high, if the conventional compression spring type electric brush is used, the effective length of carbon is short, and the service life of the motor is short.
Therefore, it is urgently needed to provide an upper bracket structure which can improve the rapid heating of the motor, prolong the service life, is convenient to process and has lower cost.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model aims to solve the technical problems of large spark, quick temperature rise and short service life of the motor in the prior art.
In order to solve the above technical problem, the present invention provides an upper bracket structure for isolating sparks, comprising: a housing, a brush mounting structure; the shell is internally provided with a bearing mounting structure, a commutator mounting structure and a tempering structure, the tempering structure is arranged between the bearing mounting structure and the commutator mounting structure, and the tempering structure is used for blocking commutation sparks generated between the commutator and the electric brush; the brush mounting structure extends in the casing side, brush mounting structure is including being used for the spacing fixed knot of torsional spring installation to construct.
In one embodiment of the present invention, the bearing mounting structure is cylindrical and includes a first mounting through hole for bearing mounting.
In one embodiment of the present invention, the commutator mounting structure is cylindrical and includes a second mounting through hole for mounting the commutator, and the first mounting through hole is engaged with the second mounting through hole.
In one embodiment of the utility model, the tempering structure comprises an annular structure protruding radially toward the inner wall of the first mounting through hole, and the annular structure comprises an opening for passing through the rotating shaft.
In one embodiment of the utility model, the brush mounting structure comprises an extension arm extending along the radial direction of the commutator mounting structure, and a brush mounting hole is formed in the extension arm and communicated with the second mounting through hole.
In one embodiment of the utility model, the wall of the electric brush mounting hole is provided with a heat dissipation groove.
In one embodiment of the present invention, the fixing structure includes: the installation support arm, the installation support arm includes connecting block, reference column, stopper, the casing outer wall is connected to the connecting block, the reference column is used for cup jointing the torsional spring, the stopper is used for connecting the one end of torsional spring.
In one embodiment of the utility model, a reinforcing rib is further arranged between the connecting block and the positioning column, and an electric brush wire passing groove is formed between the reinforcing rib and the connecting block.
In one embodiment of the utility model, a connecting support is arranged between the extension arm and the mounting arm, and a connecting hole for connecting the stator core is arranged on the connecting support.
In one embodiment of the utility model, the number of the extension arms is two, and the two extension arms are symmetrically arranged along the longitudinal section of the shell.
Compared with the prior art, the technical scheme of the utility model has the following advantages:
according to the upper bracket structure for the fire insulation spark, the reversing spark generated between the commutator body and the electric brush body can be prevented from flying out through the tempering structure, the use is safe, the bearing can be effectively protected, the integral structure is small in size, and the production and the use are convenient.
Drawings
In order that the present disclosure may be more readily and clearly understood, reference is now made to the following detailed description of the embodiments of the present disclosure taken in conjunction with the accompanying drawings, in which
Fig. 1 is a schematic structural diagram of the whole upper bracket structure.
Fig. 2 is a second perspective view of the overall structure of the upper bracket structure.
Fig. 3 is a third perspective view of the overall structure of the upper bracket structure.
Fig. 4 is a fourth perspective view of the overall structure of the upper bracket structure.
Fig. 5 is a schematic structural view of the commutator body mounted on the upper bracket.
Fig. 6 is a schematic structural view of the brush body, the torsion spring body, the bearing body, and the stator core mounted on the upper bracket.
The specification reference numbers indicate: 1. a housing; 11. a bearing mounting structure; 111. a first mounting through hole; 12. a commutator mounting structure; 121. a second mounting through hole; 13. tempering the structure; 131. opening a hole; 2. an electric brush mounting structure; 21. extending the support arm; 211. an electric brush mounting hole; 212. a heat sink; 22. a fixed structure; 221. connecting blocks; 222. a positioning column; 223. a limiting block; 224. reinforcing ribs; 225. the electric brush is threaded through the wire groove; 23. connecting a support; 231. connecting holes; 3. a commutator body; 4. an electric brush body; 5. a torsion spring body; 6. a bearing body; 7. a stator core is provided.
Detailed Description
The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.
Referring to fig. 1 to 6, an upper bracket structure for fire insulation of the present invention includes: a housing 1, a brush mounting structure 2; a bearing mounting structure 11, a commutator mounting structure 12 and a tempering structure 13 are arranged in the shell 1, the tempering structure 13 is arranged between the bearing mounting structure 11 and the commutator mounting structure 12, and the tempering structure 13 is used for blocking commutation sparks generated between the commutator body 3 and the brush body 4; brush mounting structure 2 extends in casing 1 side end, brush mounting structure 2 is including being used for the spacing fixed knot of torsional spring body 5 installation 22.
The bearing mounting structure 11 is cylindrical and comprises a first mounting through hole 111 for mounting the bearing body 6; the commutator installation structure 12 is cylindrical and comprises a second installation through hole 121 for installing the commutator body 3, and the first installation through hole 111 is connected with the second installation through hole 121; the tempering structure 13 includes a ring structure protruding radially toward the inner wall of the first mounting through-hole 111, and the ring structure includes a hole 131 for passing through the rotating shaft body. The annular structure can completely separate the bearing body 6 from the commutator body 3, so that commutation sparks generated between the commutator body 3 and the brush body 4 have no influence on the bearing, the effect of well protecting the bearing body 6 is achieved, and the service life of the motor is guaranteed. Because the rotor commutator body 3 is completely wrapped in the shell 1 of the upper bracket, commutation sparks generated between the commutator body 3 and the electric brush body 4 cannot be blown out, so that the safety in operation engineering when a paint spray gun is used is ensured, and the structure can also play a good role in protecting the commutator body 3.
The brush mounting structure 2 comprises extending support arms 21 extending along the radial direction of the commutator mounting structure 12, brush mounting holes 211 are formed in the extending support arms 21, the brush mounting holes 211 are communicated with the second mounting through holes 121, the number of the extending support arms 21 is two, and the two extending support arms 21 are symmetrically arranged along the longitudinal section of the shell 1.
The wall of the brush mounting hole 211 is provided with a heat dissipation groove 212. The temperature of the carbon of the brush body 4 can not be too high in the operation process, so that the service life of the motor is influenced.
The fixing structure 22 includes: the installation support arm, the installation support arm includes connecting block 221, reference column 222, stopper 223, casing 1 outer wall is connected to connecting block 221, reference column 222 is used for cup jointing torsional spring body 5, stopper 223 is used for connecting the one end of torsional spring body 5, torsional spring body 5's the other end butt brush body 4. By adopting the torsion spring structure, the actual effective length of the brush body 4 is ensured.
A reinforcing rib 224 is further arranged between the connecting block 221 and the positioning column 222, and a brush wire passing groove 225 is formed between the reinforcing rib 224 and the connecting block 221, so that the wire passing of the brush body 4 is facilitated.
Extend and be equipped with between support arm 21 and the installation support arm and connect support 23, be equipped with the connecting hole 231 that is used for connecting stator core 7 on connecting support 23, conveniently connect stator core 7 through the screw.
According to the spark-isolating upper bracket structure, the backfire structure 13 can ensure that sparks cannot fly out, the use is safe, the bearing can be effectively protected, and the service life of the motor is prolonged by more than fifty hours; and the upper bracket structure has small volume, is practical and safe and is convenient to use.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the utility model may be made without departing from the spirit or scope of the utility model.
Claims (10)
1. An upper bracket structure of a fire insulation flower, comprising: a housing, a brush mounting structure;
the shell is internally provided with a bearing mounting structure, a commutator mounting structure and a tempering structure, the tempering structure is arranged between the bearing mounting structure and the commutator mounting structure, and the tempering structure is used for blocking commutation sparks generated between the commutator and the electric brush;
the brush mounting structure extends in the casing side, brush mounting structure is including being used for the spacing fixed knot of torsional spring installation to construct.
2. A spark insulating upper bracket structure according to claim 1, wherein the bearing mounting structure is cylindrical and includes a first mounting through hole for bearing mounting.
3. The upper bracket structure for isolating sparks as claimed in claim 2, wherein the commutator mounting structure is cylindrical and comprises a second mounting through hole for mounting the commutator, and the first mounting through hole is engaged with the second mounting through hole.
4. A spark insulating upper bracket structure according to claim 3, wherein the tempering structure includes an annular structure protruding radially toward an inner wall of the first mounting through hole, the annular structure including an opening for passing the shaft therethrough.
5. A spark insulating upper bracket structure according to claim 4, wherein the brush mounting structure includes an extension arm extending radially of the commutator mounting structure, the extension arm having a brush mounting hole formed therein, the brush mounting hole communicating with the second mounting through hole.
6. The upper bracket structure for fire insulation of claim 5, wherein the wall of the brush mounting hole is provided with a heat sink.
7. A fire stopping upper bracket structure according to claim 6, wherein said fixing structure comprises: the installation support arm, the installation support arm includes connecting block, reference column, stopper, the casing outer wall is connected to the connecting block, the reference column is used for cup jointing the torsional spring, the stopper is used for connecting the one end of torsional spring.
8. The upper bracket structure of claim 7, wherein a reinforcing rib is further arranged between the connecting block and the positioning column, and an electric brush wire passing groove is formed between the reinforcing rib and the connecting block.
9. The upper bracket structure for fire insulation of claim 8, wherein a connecting support is arranged between the extension arm and the mounting arm, and the connecting support is provided with a connecting hole for connecting the stator core.
10. A spark insulating upper bracket structure according to claim 9, wherein the number of the extension arms is two, and the two extension arms are symmetrically arranged along a longitudinal section of the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121642003.7U CN215682010U (en) | 2021-07-19 | 2021-07-19 | Upper bracket structure for fire insulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121642003.7U CN215682010U (en) | 2021-07-19 | 2021-07-19 | Upper bracket structure for fire insulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215682010U true CN215682010U (en) | 2022-01-28 |
Family
ID=79980498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121642003.7U Active CN215682010U (en) | 2021-07-19 | 2021-07-19 | Upper bracket structure for fire insulation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215682010U (en) |
-
2021
- 2021-07-19 CN CN202121642003.7U patent/CN215682010U/en active Active
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