CN210040822U - Splined inner hole hook type commutator - Google Patents
Splined inner hole hook type commutator Download PDFInfo
- Publication number
- CN210040822U CN210040822U CN201921212549.1U CN201921212549U CN210040822U CN 210040822 U CN210040822 U CN 210040822U CN 201921212549 U CN201921212549 U CN 201921212549U CN 210040822 U CN210040822 U CN 210040822U
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- commutator
- fixing pin
- commutator segment
- level step
- hole
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Abstract
The utility model discloses a take spline hole hook type commutator, including the plastics base member and the commutator segment of laying at the excircle of plastics base member, the top of commutator segment is equipped with the bonding wire crotch, insulates its characterized in that through the dead slot between the adjacent commutator segment: the shaft hole of the plastic base body is a spline hole, six spline grooves are uniformly distributed on the wall of the shaft hole along the circumference, and the lower end of the shaft hole is a hollow space. The utility model discloses commutator hole fracture when can avoiding the installation, better assurance installation quality is equipped with four fixed feet in order to improve commutator mechanical strength, reduce cost, and commutator segment forming process is simple under the prerequisite of saving the consumptive material simultaneously.
Description
Technical Field
The utility model relates to a commutator technical field, concretely relates to hook-type commutator.
Background
The hook-type commutator comprises a plastic base body and commutator segments arranged on the outer circle of the plastic base body, and the top of each commutator segment is provided with a welding wire hook. The inner hole of the hook-type commutator is required to be arranged in a motor shaft when the hook-type commutator is installed, and in order to ensure the strength of the inner hole, the inner hole of some commutators is provided with a metal inner hole bush, but the cost is high; for the hook-type commutator without the metal inner hole bush, the surface of the inner hole of the commutator generates larger stress because of interference fit between the inner hole and the excircle of the motor shaft, the inner hole of the commutator is easy to crack, the installation quality is affected, and the commutator is not easy to be perceived, so that serious potential safety hazard exists. In addition, the commutator segments of the hook-type commutator are combined with the plastic substrate through the fixing pins arranged on the inner side surface of the commutator segments, the arrangement number and the arrangement mode of the fixing pins have great influence on the mechanical strength of the commutator, if a plurality of fixing pins are arranged, the length of the commutator segments is long, or a lot of materials are consumed, or the molding process is complex, so that the cost is increased. In addition, the hook-type commutator is generally not provided with a positioning reference during installation, and the installation quality is also influenced in certain specific occasions.
Disclosure of Invention
In view of the not enough of background art, the utility model aims at providing a commutator hole fracture when can avoiding the installation, better assurance installation quality, the commutator segment is equipped with four fixed feet in order to improve commutator mechanical strength simultaneously under the prerequisite of saving the consumptive material, reduce cost, and the simple spline hole hook type commutator of taking of commutator segment shaping simple process.
The utility model adopts the following technical proposal to complete:
take spline hole hook-type commutator, including plastic substrate and the commutator segment of laying at plastic substrate's excircle, the top of commutator segment is equipped with the bonding wire crotch, insulates its characterized in that through the dead slot between the adjacent commutator segment: the shaft hole of the plastic base body is a spline hole, six spline grooves are uniformly distributed on the wall of the shaft hole along the circumference, and the lower end of the shaft hole is a hollow space.
The top of the plastic base body is provided with a raised circular truncated cone, and the upper end face of the raised circular truncated cone is provided with four assembling positioning holes.
The commutator segment is provided with an inner layer fixing pin and an outer layer fixing pin, the inner layer fixing pin comprises an upper fixing pin A and a lower fixing pin B, and the outer layer fixing pin comprises an upper fixing pin C and a lower fixing pin D; the commutator segment is provided with a first-level step on the inner side surface before the punching fixed foot, a second-level step on the inner side surface of the first-level step, the length of the second-level step is smaller than that of the first-level step, the upper fixed foot A and the lower fixed foot B are formed by the upper end part and the lower end part of the punching second-level step, and the upper fixed foot C and the lower fixed foot D are formed by the upper end part and the lower end part of the punching first-level step.
According to the hook-type commutator, the shaft hole of the plastic base body (namely the inner hole of the commutator in the motor shaft) is the spline hole, and when the spline hole is filled into the interference fit motor shaft, the stress concentration on the surface of the inner hole can be effectively eliminated, the commutator inner hole is prevented from cracking, the installation quality is guaranteed, and the potential safety hazard is eliminated. In addition, the arrangement of the assembling positioning holes enables the hook-type commutator to have a positioning reference when being installed in certain specific occasions, and the installation quality is better guaranteed. In addition, the commutator segment is provided with an inner layer of fixing feet and an outer layer of fixing feet, the fixing feet are formed after the first-stage step and the second-stage step on the inner side surface of the commutator segment are respectively punched, the forming process is simple, the arrangement position of the fixing feet is reasonable, the mechanical strength of the commutator is improved to the maximum extent, and meanwhile, the commutator segment with the structure has the advantages of less material consumption and cost reduction.
Preferably, the fixing leg A, B, C, D has a semicircular notch groove at a position close to the end of the inner side surface.
Drawings
The utility model discloses there is following figure:
figure 1 is a schematic structural diagram of the present invention,
figure 2 is a cross-sectional view a-a of figure 1,
fig. 3 is a structural view of the segment of fig. 1 prior to die cutting the anchor feet.
Detailed Description
As shown in the figure, the utility model discloses a take spline hole hook type commutator, including plastic substrate 1 and commutator segment 2 laid at plastic substrate 1's excircle, commutator segment 2's top is equipped with bonding wire crotch 3, insulate through insulating groove 12 between the adjacent commutator segment 2, plastic substrate 1's shaft hole 7 is the splined hole, shaft hole 7's pore wall has six splined grooves 6 of circumference equipartition, shaft hole 7's lower extreme is for drawing empty space 5, plastic substrate 1's top is equipped with protruding round platform 9, the up end of protruding round platform 9 is equipped with four assembly locating holes 8. The commutator segment 2 is provided with an inner layer fixing pin and an outer layer fixing pin, the inner layer fixing pin comprises an upper fixing pin A and a lower fixing pin B, and the outer layer fixing pin comprises an upper fixing pin C and a lower fixing pin D; referring to fig. 3, the inner side surface of the commutator segment 2 is provided with a first-stage step 10 before the fixed leg is punched, the inner side surface of the first-stage step 10 is provided with a second-stage step 11, the length of the second-stage step 11 is smaller than that of the first-stage step 10, the upper fixed leg a and the lower fixed leg B are formed by punching the upper end part and the lower end part of the second-stage step 11, the upper fixed leg C and the lower fixed leg D are formed by punching the upper end part and the lower end part of the first-stage step 10, and the inner side surface of the fixed leg A, B, C, D.
Claims (4)
1. Take spline hole hook-type commutator, including plastic substrate and the commutator segment of laying at plastic substrate's excircle, the top of commutator segment is equipped with the bonding wire crotch, insulates its characterized in that through the dead slot between the adjacent commutator segment: the shaft hole of the plastic base body is a spline hole, six spline grooves are uniformly distributed on the wall of the shaft hole along the circumference, and the lower end of the shaft hole is a hollow space.
2. The splined female hook commutator of claim 1, wherein: the top of the plastic base body is provided with a raised circular truncated cone, and the upper end face of the raised circular truncated cone is provided with four assembling positioning holes.
3. The splined female hook commutator of claim 1, wherein: the commutator segment is provided with an inner layer fixing pin and an outer layer fixing pin, the inner layer fixing pin comprises an upper fixing pin A and a lower fixing pin B, and the outer layer fixing pin comprises an upper fixing pin C and a lower fixing pin D; the commutator segment is provided with a first-level step on the inner side surface before the punching fixed foot, a second-level step on the inner side surface of the first-level step, the length of the second-level step is smaller than that of the first-level step, the upper fixed foot A and the lower fixed foot B are formed by the upper end part and the lower end part of the punching second-level step, and the upper fixed foot C and the lower fixed foot D are formed by the upper end part and the lower end part of the punching first-level step.
4. The splined female hook commutator of claim 3, wherein: the inner side surface of the fixing leg A, B, C, D is provided with a semicircular notch groove near the end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921212549.1U CN210040822U (en) | 2019-07-30 | 2019-07-30 | Splined inner hole hook type commutator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921212549.1U CN210040822U (en) | 2019-07-30 | 2019-07-30 | Splined inner hole hook type commutator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210040822U true CN210040822U (en) | 2020-02-07 |
Family
ID=69350399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921212549.1U Active CN210040822U (en) | 2019-07-30 | 2019-07-30 | Splined inner hole hook type commutator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210040822U (en) |
-
2019
- 2019-07-30 CN CN201921212549.1U patent/CN210040822U/en active Active
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