CN213112521U - Micromotor rear cover with thermal protection function - Google Patents
Micromotor rear cover with thermal protection function Download PDFInfo
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- CN213112521U CN213112521U CN202021827933.5U CN202021827933U CN213112521U CN 213112521 U CN213112521 U CN 213112521U CN 202021827933 U CN202021827933 U CN 202021827933U CN 213112521 U CN213112521 U CN 213112521U
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- rear cover
- carbon brush
- terminal
- micromotor
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 53
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 53
- 238000013016 damping Methods 0.000 claims description 20
- 238000005452 bending Methods 0.000 claims description 9
- 230000003044 adaptive effect Effects 0.000 claims description 5
- 238000003860 storage Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000003780 insertion Methods 0.000 description 5
- 230000037431 insertion Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model discloses a lid behind micromotor with thermal protection function, including back lid body, PTC thermistor, positive terminal, negative terminal, first conductive terminal, second conductive terminal, third conductive terminal, first carbon brush spare, second carbon brush spare, positive terminal is connected with first carbon brush spare through first conductive terminal, and the negative terminal passes through second conductive terminal to be connected with PTC thermistor's first end, and PTC thermistor's second end is connected with second carbon brush spare through third conductive terminal. The PTC thermistor is arranged on the rear cover body, and can provide heat protection for the micro motor, so that the micro motor is prevented from being damaged due to overhigh temperature rise under the conditions of overload and locked rotor; the elements on the rear cover body are connected in a buckling mode, so that the assembly is convenient, and the installation is stable and cannot be loosened; the device has the beneficial effects of compact structure, convenience in assembly and strong protectiveness.
Description
Technical Field
The utility model relates to a micromotor field especially relates to a lid behind micromotor with thermal protection function.
Background
Micro-motors, collectively referred to as "micro-motors," are commonly used in control systems or transmission mechanical loads to perform functions such as detection, analytical operation, amplification, execution, or conversion of electromechanical signals or energy.
In the prior art, the carbon brush of the micro motor often causes higher temperature rise or overlarge current in the relative friction process with the rotor, so that the micro motor is easily damaged by overheating and the service life of the micro motor is influenced; in addition, the structural arrangement of each element in the rear cover of the micromotor is not compact enough, so that the installation space is large, the volume of the micromotor is increased, and the carbon brush holder in the rear cover is generally connected with the terminals of the positive electrode and the negative electrode in a welding mode, so that the manufacturing process of the micromotor becomes complicated, the whole assembly of the micromotor is not facilitated, a large amount of labor cost is wasted, and the production efficiency of an enterprise is reduced.
Accordingly, the prior art is deficient and needs improvement.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: the micromotor rear cover with the thermal protection function is compact in structural arrangement, convenient to assemble, firm in installation and free of loosening.
The technical scheme of the utility model as follows: a rear cover of a micro motor with a thermal protection function comprises a rear cover body, a PTC thermistor, a positive terminal, a negative terminal, a first conductive terminal, a second conductive terminal, a third conductive terminal, a first carbon brush piece and a second carbon brush piece, wherein a shaft hole is formed in the middle of the rear cover body;
the rear cover body right side is equipped with the storage tank, PTC thermistor locates in the storage tank, the one end of negative pole terminal is located in the second draw-in groove, the other end of negative pole terminal is connected with PTC thermistor's first end through second conductive terminal, PTC thermistor's second end is connected with second carbon brush spare through third conductive terminal, second carbon brush spare is located the left side below side in shaft hole.
Adopt above-mentioned technical scheme, micromotor back cover with thermal protection function in, positive terminal including inserting the portion of closing, the portion of bending, wiring portion and connecting portion, wiring portion downwardly extends respectively has the portion of inserting the portion of closing and the portion of bending, wiring portion side extends there is connecting portion, first draw-in groove bottom is equipped with first slot, the portion bottom of inserting the portion of closing is equipped with the first fixture block of being connected with first slot block, insert the portion of closing and locate in the first draw-in groove, first stopper lateral wall is equipped with first lug, the portion of bending is connected with first lug lock, the connecting portion top is equipped with first Y type groove, one side bottom of first conductive terminal is equipped with second Y groove, first Y type groove is connected with the mutual gomphosis in second Y type groove.
By adopting the technical scheme, in the micromotor rear cover with the thermal protection function, the wiring part is provided with the wiring lug which is convenient to be connected with a power line.
By adopting the technical scheme, in the micromotor rear cover with the thermal protection function, the rear cover body on the upper right side of the shaft hole is provided with the second limiting block, the bottom of the rear cover body at the side end of the second limiting block is provided with the second slot, the bottom of the other side of the first conductive terminal is provided with the second clamping block, and the second clamping block is connected with the second slot in a clamping manner.
According to the technical scheme, in the micromotor rear cover with the thermal protection function, the first carbon brush piece comprises the first carbon brush and the first damping elastic piece, one end of the first damping elastic piece is connected with the first carbon brush, a plurality of first positioning holes are formed in the other end of the first damping elastic piece, a plurality of first positioning columns which are in adaptive connection with the first positioning holes are convexly arranged on the first conductive terminal, and the first positioning columns are connected with the first positioning holes in a one-to-one correspondence mode respectively.
By adopting the technical scheme, in the micromotor rear cover with the thermal protection function, the side wall of the second limiting block is provided with the first positioning chutes, and the first positioning posts are embedded in the first positioning chutes.
Adopt above-mentioned each technical scheme, micromotor back cover with thermal protection function in, the negative terminal is the same with positive terminal's structure, the negative terminal below is equipped with third Y type groove, second conductive terminal left side is equipped with fourth Y type groove, third Y type groove is connected through the gomphosis with fourth Y type groove, be equipped with the third stopper on the back lid body of shaft hole right side below side, be equipped with the third slot on the third stopper, second conductive terminal middle part bottom is equipped with the third fixture block, the third fixture block is connected with third slot block.
By adopting the technical scheme, in the micromotor rear cover with the thermal protection function, the third conductive terminal is of a semi-surrounding structure, a plurality of convex blocks convenient to be connected with the PTC thermistor are arranged at one side end of the third conductive terminal, a fourth clamping block is arranged at the bottom end of the middle part of the third conductive terminal, and a fourth slot connected with the fourth clamping block in a clamping manner is arranged on the rear cover body.
By adopting the technical scheme, in the micromotor rear cover with the thermal protection function, the structure of the second carbon brush piece is the same as that of the first carbon brush piece and comprises a second carbon brush and a second damping elastic piece, one end of the second damping elastic piece is connected with the second carbon brush, a plurality of second positioning holes are formed in the other end of the second damping elastic piece, a plurality of second positioning columns which are in adaptive connection with the second positioning holes are convexly arranged on the third conductive terminal, and the second positioning columns are respectively in one-to-one corresponding connection with the second positioning holes.
By adopting the technical proposal, the utility model arranges the PTC thermistor on the back cover body, and the second carbon brush piece is connected with the negative terminal through the PTC thermistor, so that the PTC thermistor can provide heat protection for the micromotor, and the micromotor is prevented from being damaged by overhigh temperature rise under the conditions of overload and locked rotor; the positive terminal and the negative terminal are connected with the rear cover body in a clamping manner, the positive terminal and the negative terminal are respectively connected with the first conductive terminal and the second conductive terminal in a mutual embedding manner through the Y-shaped groove, and the first conductive terminal and the third conductive terminal are respectively connected with the first carbon brush piece and the second carbon brush piece in a positioning and mounting manner; the whole structure is arranged compactly, the assembly is convenient, the assembly volume of the rear cover body can be reduced, meanwhile, the micro motor can be provided with a thermal protection effect, and the device can be popularized and used.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an assembly diagram of the internal structure of the rear cover body of the present invention;
FIG. 3 is a schematic structural view of the rear cover body of the present invention;
FIG. 4 is a schematic view of the connection structure of the components of the present invention;
fig. 5 is a schematic structural view of the positive terminal of the present invention;
fig. 6 is a schematic structural view of the first conductive terminal of the present invention;
fig. 7 is a schematic structural view of a second conductive terminal of the present invention;
fig. 8 is a schematic structural view of a third conductive terminal according to the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 to 3, a micromotor rear cover with thermal protection function comprises a rear cover body 1, a PTC thermistor 2, a positive terminal 3, a negative terminal 4, a first conductive terminal 5, a second conductive terminal 6, a third conductive terminal 7, a first carbon brush 8 and a second carbon brush 9, wherein a shaft hole 10 is formed in the middle of the rear cover body 1, a first limit block 11 is arranged on the left side of the rear cover body 1, a first clamping groove 111 is formed in the top of the first limit block 11, a second clamping groove 112 is formed in the bottom of the first limit block 11, one end of the positive terminal 3 is arranged in the first clamping groove 111, the other end of the positive terminal 3 is connected with the first carbon brush 8 through the first conductive terminal 5, and the first carbon brush 8 is located on the upper left side of the shaft hole 10. In this embodiment, the positive terminal 3 may be connected to a positive line of an external power source, the negative terminal 4 may be connected to a negative line of the external power source, a ball bearing may be assembled on the shaft hole 10 to facilitate connection to an external commutator, so as to reduce the rotational friction of the rotor of the micro-motor, and one end of the positive terminal 3 is clamped in the first clamping groove 111, so as to improve the installation stability of the positive terminal 3.
As shown in fig. 1 to 3, a receiving groove 100 is formed in the right side of the rear cover body 1, the PTC thermistor 2 is disposed in the receiving groove 100, one end of the negative terminal 4 is disposed in the second engaging groove 112, the other end of the negative terminal 4 is connected to the first end of the PTC thermistor 2 through the second conductive terminal 6, the second end of the PTC thermistor 2 is connected to the second carbon brush 9 through the third conductive terminal 7, and the second carbon brush 9 is located on the lower left side of the shaft hole 10. In this embodiment, one end of the negative terminal 4 is clamped in the second clamping groove 112, so that the installation stability of the negative terminal 4 can be improved. The second carbon brush 9 is connected with the negative terminal 4 through the PTC thermistor 2, the PTC thermistor 2 can sensitively detect the temperature rise condition of the second carbon brush 9, when the temperature rise of the second carbon brush 9 is high, the resistance value of the PTC thermistor 2 is increased, so that the increase of the rotor current of the micromotor is limited, the rotor temperature of the micromotor is kept within a set range, and the micromotor is prevented from being damaged due to overhigh temperature rise under the conditions of overload and rotation blockage.
As shown in fig. 3 to 5, further, the positive terminal 3 includes an insertion portion 31, a bending portion 32, a wiring portion 33 and a connecting portion 34, the wiring portion 33 extends downward to form the insertion portion 31 and the bending portion 32, the side end of the wiring portion 33 extends to form the connecting portion 34, a first slot 1110 is disposed at the bottom of the first slot 111, a first locking block 311 engaged with the first slot 1110 is disposed at the bottom of the insertion portion 31, the insertion portion 31 is disposed in the first slot 111, a first protruding block 113 is disposed on the side wall of the first limiting block 11, the bending portion 32 is engaged with the first protruding block 113, a first Y-shaped slot 341 is disposed at the top end of the connecting portion 34, a second Y-shaped slot 51 is disposed at the bottom of one side of the first conductive terminal 5, and the first Y-shaped slot 341 is engaged with the second Y-shaped slot 51. In this embodiment, the first latch 311 disposed at the bottom of the insertion portion 31 is connected to the first slot 1110 by a snap-fit connection, so that the positive terminal 3 can be firmly snapped on the rear cover body 1, thereby improving the stability of assembly. The bent portion 32 is fastened to the first protrusion 113 to prevent the positive terminal 3 from loosening during the operation of the micro-motor. The connecting portion 34 is connected with the second Y-shaped groove 51 on the first conductive terminal 5 through the first Y-shaped groove 341 in a mutual embedding manner, so that the positive terminal 3 is convenient to assemble while being electrically connected with the first conductive terminal 5, and the production and assembly efficiency of the micro-motor is improved.
As shown in fig. 5, the wire connecting portion 33 is further provided with a wire connecting bump 331 for facilitating connection with a power line. In this embodiment, the arrangement of the wiring bump 331 is convenient for the positive terminal 3 to be connected with the positive wire of the external power supply.
As shown in fig. 3, 4 and 6, further, a second limiting block 12 is disposed on the rear cover body 1 at the upper right side of the shaft hole 10, a second slot 120 is disposed at the bottom of the rear cover body 1 at the side end of the second limiting block 12, a second clamping block 52 is disposed at the bottom of the other side of the first conductive terminal 5, and the second clamping block 52 is connected with the second slot 120 in a clamping manner. In this embodiment, the first conductive terminal 5 is connected to the second slot 120 of the rear cover body 1 through the second latch 52, so as to improve the assembling stability of the first conductive terminal 5.
Further, the first carbon brush 8 includes a first carbon brush 81 and a first damping elastic sheet 82, one end of the first damping elastic sheet 82 is connected with the first carbon brush 81, the other end of the first damping elastic sheet 82 is provided with a plurality of first positioning holes (not shown), the first conductive terminal 5 is convexly provided with a plurality of first positioning posts 53 adaptive to the first positioning holes, and the first positioning posts 53 are respectively connected with the first positioning holes in a one-to-one correspondence manner. In this embodiment, the first damping elastic piece 82 is disposed to enable the first carbon brush 81 to obtain a certain elastic force, so that the first carbon brush 81 is always in sliding contact with the commutator. The first damping elastic piece 82 is connected with the first positioning column 53 on the first conductive terminal 5 through the first positioning hole, so that the assembly efficiency between the first conductive terminal 5 and the first carbon brush 8 can be improved, and the installation is convenient.
As shown in fig. 3, further, a plurality of first positioning sliding grooves 121 are formed in the side wall of the second limiting block 12, and the first positioning posts 53 are embedded in the first positioning sliding grooves 121. In this embodiment, the first positioning sliding groove 121 is disposed to improve the mounting stability of the first conductive terminal 5 and prevent the first conductive terminal 5 from shifting on the rear cover body 1.
As shown in fig. 3, 4 and 7, further, the negative terminal 4 has the same structure as the positive terminal 3, a third Y-shaped groove 41 is formed below the negative terminal 4, a fourth Y-shaped groove 61 is formed in the left side of the second conductive terminal 6, the third Y-shaped groove 41 is connected with the fourth Y-shaped groove 61 through an embedded joint, a third limiting block 13 is arranged on the rear cover body 1 on the lower right side of the shaft hole 10, a third slot 130 is formed in the third limiting block 13, a third clamping block 62 is arranged at the bottom end of the middle of the second conductive terminal 6, and the third clamping block 62 is connected with the third slot 130 in a clamping manner. In this embodiment, the negative terminal 4 is connected to the fourth Y-shaped groove 61 on the second conductive terminal 6 through the third Y-shaped groove 41 in an embedded manner, so that the negative terminal 4 is convenient to assemble while being electrically connected to the second conductive terminal 6, thereby improving the production and assembly efficiency of the micro-motor. The third latch 62 disposed on the second conductive terminal 6 can be connected to the third slot 130 by a snap-fit connection, so as to improve the assembling stability of the second conductive terminal 6.
As shown in fig. 3, 4 and 8, further, the third conductive terminal 7 is a semi-enclosed structure, a plurality of protruding blocks 71 are disposed at one side end of the third conductive terminal 7 for being conveniently connected with the PTC thermistor 2, a fourth fixture block 72 is disposed at the bottom end of the middle portion of the third conductive terminal 7, and a fourth slot 14 for being connected with the fourth fixture block 72 in a clamping manner is disposed on the rear cover body 1. In this embodiment, the fourth latch 72 of the third conductive terminal 7 can be connected to the fourth slot 14 by a snap-fit connection, so as to improve the assembling stability of the third conductive terminal 7.
As shown in fig. 4 and 8, the second carbon brush 9 has a structure the same as that of the first carbon brush 8, and includes a second carbon brush 91 and a second damping elastic sheet 92, one end of the second damping elastic sheet 92 is connected to the second carbon brush 91, the other end of the second damping elastic sheet 92 is provided with a plurality of second positioning holes (not shown), the third conductive terminal 7 is convexly provided with a plurality of second positioning posts 73 adapted to the second positioning holes, and the second positioning posts 73 are respectively connected to the second positioning holes in a one-to-one correspondence manner.
By adopting the technical proposal, the utility model arranges the PTC thermistor on the back cover body, and the second carbon brush piece is connected with the negative terminal through the PTC thermistor, so that the PTC thermistor can provide heat protection for the micromotor, and the micromotor is prevented from being damaged by overhigh temperature rise under the conditions of overload and locked rotor; the positive terminal and the negative terminal are connected with the rear cover body in a clamping manner, the positive terminal and the negative terminal are respectively connected with the first conductive terminal and the second conductive terminal in a mutual embedding manner through the Y-shaped groove, and the first conductive terminal and the third conductive terminal are respectively connected with the first carbon brush piece and the second carbon brush piece in a positioning and mounting manner; the whole structure is arranged compactly, the assembly is convenient, the assembly volume of the rear cover body can be reduced, meanwhile, the micro motor can be provided with a thermal protection effect, and the device can be popularized and used.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. The utility model provides a lid behind micromotor with thermal protection function which characterized in that: the PTC brush comprises a rear cover body, a PTC thermistor, a positive terminal, a negative terminal, a first conductive terminal, a second conductive terminal, a third conductive terminal, a first carbon brush piece and a second carbon brush piece, wherein a shaft hole is formed in the middle of the rear cover body;
the rear cover body right side is equipped with the storage tank, PTC thermistor locates in the storage tank, the one end of negative pole terminal is located in the second draw-in groove, the other end of negative pole terminal is connected with PTC thermistor's first end through second conductive terminal, PTC thermistor's second end is connected with second carbon brush spare through third conductive terminal, second carbon brush spare is located the left side below side in shaft hole.
2. The micromotor rear cover with thermal protection according to claim 1, characterized in that: the positive terminal is including inserting the portion of closing, the portion of bending, wiring portion and connecting portion, wiring portion downwardly extends respectively has to insert the portion of closing and the portion of bending, it has a connecting portion to connect the portion side extension, first draw-in groove bottom is equipped with first slot, it is equipped with the first fixture block of being connected with first slot block to insert portion bottom of closing, it locates in the first draw-in groove to insert the portion of closing, first stopper lateral wall is equipped with first lug, the portion of bending is connected with first lug lock, the connecting portion top is equipped with first Y type groove, one side bottom of first conductive terminal is equipped with second Y groove, first Y type groove is connected with the mutual gomphosis in second Y type groove.
3. The micromotor rear cover with thermal protection according to claim 2, characterized in that: the wiring portion is provided with a wiring lug which is convenient to be connected with a power line.
4. The micromotor rear cover with thermal protection according to claim 2, characterized in that: the rear cover body on the upper right side of the shaft hole is provided with a second limiting block, the bottom of the rear cover body at the side end of the second limiting block is provided with a second slot, the bottom of the other side of the first conductive terminal is provided with a second clamping block, and the second clamping block is connected with the second slot in a clamping mode.
5. The micromotor rear cover with thermal protection according to claim 4, characterized in that: the first carbon brush piece comprises a first carbon brush and a first damping elastic sheet, one end of the first damping elastic sheet is connected with the first carbon brush, a plurality of first positioning holes are formed in the other end of the first damping elastic sheet, a plurality of first positioning columns which are in adaptive connection with the first positioning holes are convexly arranged on the first conductive terminal, and the first positioning columns are connected with the first positioning holes in a one-to-one correspondence mode respectively.
6. The micromotor rear cover with thermal protection according to claim 5, characterized in that: the lateral wall of the second limiting block is provided with a plurality of first positioning chutes, and the first positioning posts are embedded in the first positioning chutes.
7. The micromotor rear cover with thermal protection according to claim 2, characterized in that: the structure of negative terminal and positive terminal is the same, the negative terminal below is equipped with third Y type groove, second conductive terminal left side is equipped with fourth Y type groove, third Y type groove is connected through the gomphosis with fourth Y type groove, be equipped with the third stopper on the back lid body of axle hole right side below side, be equipped with the third slot on the third stopper, second conductive terminal middle part bottom is equipped with the third fixture block, the third fixture block is connected with third slot block.
8. The micromotor rear cover with thermal protection according to claim 1, characterized in that: the third conductive terminal is of a semi-surrounding structure, a plurality of protruding blocks convenient to connect with the PTC thermistor are arranged at one side end of the third conductive terminal, a fourth clamping block is arranged at the bottom end of the middle of the third conductive terminal, and a fourth slot connected with the fourth clamping block in a clamping mode is arranged on the rear cover body.
9. The micromotor rear cover with thermal protection according to claim 5, characterized in that: the structure of the second carbon brush piece is the same as that of the first carbon brush piece and comprises a second carbon brush and a second damping elastic piece, one end of the second damping elastic piece is connected with the second carbon brush, a plurality of second positioning holes are formed in the other end of the second damping elastic piece, a plurality of second positioning columns which are in adaptive connection with the second positioning holes are convexly arranged on the third conductive terminal, and the second positioning columns are respectively in one-to-one corresponding connection with the second positioning holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021827933.5U CN213112521U (en) | 2020-08-27 | 2020-08-27 | Micromotor rear cover with thermal protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021827933.5U CN213112521U (en) | 2020-08-27 | 2020-08-27 | Micromotor rear cover with thermal protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213112521U true CN213112521U (en) | 2021-05-04 |
Family
ID=75656884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021827933.5U Active CN213112521U (en) | 2020-08-27 | 2020-08-27 | Micromotor rear cover with thermal protection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213112521U (en) |
-
2020
- 2020-08-27 CN CN202021827933.5U patent/CN213112521U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A micro motor back cover with thermal protection function Granted publication date: 20210504 Pledgee: Heyuan Branch of China Construction Bank Co.,Ltd. Pledgor: HEPING CHANGSHENG MOTOR CO.,LTD. Registration number: Y2024980015035 |