CN203150869U - Insert piece type all-plastic commutator - Google Patents
Insert piece type all-plastic commutator Download PDFInfo
- Publication number
- CN203150869U CN203150869U CN 201320103306 CN201320103306U CN203150869U CN 203150869 U CN203150869 U CN 203150869U CN 201320103306 CN201320103306 CN 201320103306 CN 201320103306 U CN201320103306 U CN 201320103306U CN 203150869 U CN203150869 U CN 203150869U
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- commutator
- commutator segment
- segment
- main body
- molded
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Abstract
An insert piece type all-plastic commutator is provided. A plastic component (2) is a hollow cylinder having a front cap portion (2a) and a rear cap portion (2b). A trapezoidal segment (212) is molded on an upper portion of a straight segment (211) which is molded on the hollow cylinder. Each commutator segment (1) is composed of a commutator segment main body (11) which has a trapezoidal cross section, a step-shaped rising portion (12) and an anti-drop block (13), wherein the rising portion (12) is molded on the commutator segment main body (11); the anti-drop block (13) is molded in a lower portion of the commutator segment main body (11); a clamping groove (14) is formed between the anti-drop block (13) and the commutator segment main body (11); the trapezoidal segment (212) is clamped in the clamping groove (14); the anti-drop block (13) is pressed on a lower portion of the trapezoidal segment (212); and the right end of each commutator segment (1) presses against a left side inner wall of the rear cap portion (2b). The insert piece type all-plastic commutator helps to improve capabilities of high-speed rotation centrifugal force resistance of each commutator segment, and prevents a fault of segment jumping of the commutator.
Description
Technical field:
The utility model relates to automobile commutator technical field, more specifically to the overall plastic commutator of a kind of blade inserting.
Background technology:
For keeping the consistency of starter armature current in wire direction and magnetic pole S, N polarity, the consistency of the electromagnetic force that maintenance armature coil electric current produces.This is the basic demand of starting function operate as normal.
The sense of current of starter armature lead changes with the variation of pole polarity, commutator imports armature coil with the electric current of storage battery, because the effect of commutator guarantees that the armature coil sense of current is consistent with pole polarity, has also just guaranteed the direction homogeneity of starter armature coil electromagnetism power.
Commutator is made up of the multi-disc commutator segment, and the cross section of commutator segment is trapezoidal, and the commutator of several pieces trapezoid cross sections is formed the commutator of a cylindrical structural.
Do not have direct circuit contact between two adjacent commutator segments, can only that is to say that electric current flows to the B commutator segment from the A commutator segment must pass through armature coil by the contact of armature coil group between two commutator segments.Electric current can not flow between two commutator segments.So, must guarantee enough insulating capacities between commutator segment.
The multi-disc commutator segment is formed the commutator of certain diameter, and commutator is the rotating parts of starter, and along with the light-weighted needs of starter, the rotary speed of starter is more and more higher.So during the starter operation, commutator segment bears bigger rotary centrifugal force.
The structure of starter commutator is in constantly improving, commutator the earliest is the riveting commutator of mechanical structure, this structure commutator is made up of commutator segment, copper coin rise piece processed, mica sheet, the soft mica bowl of V-arrangement, steel V-arrangement briquetting, the circular riveting pipe of steel, its structure is very complicated, and manufacturing process is also very loaded down with trivial details.
Along with the development of plastics industry, the raising of plastics performance, plastics progress into the starter manufacturing industry, and the starter commutator has also been used plastics.
Current, the employed plastic commutator of starter is divided into the overall plastic commutator of copper pipe squash type and blade inserting is partly moulded commutator, and overall plastic commutator is made up of commutator segment, plastics, steel circle lining.Partly moulding commutator rolls band, steel circle lining by commutator segment, mica sheet, steel and forms.
The poor-performing of anti-rotary centrifugal force of the commutator of said structure is prone to when rotating at a high speed and gets rid of the sheet fault.
Shown in Fig. 1 to 4, at present domestic current partly moulds the commutator manufacturing, with copper material through drawing process, make the wire rod of trapezoid cross section, again through punching machine, trapezoidal wire rod is manufactured the commutator segment of shape such as pistol pattern, the two ends of commutator segment manufacture dovetail shaped, the middle part of commutator segment manufactures rectangular window, form annular by multi-disc commutator segment, mica sheet, in the dovetail at commutator segment two ends He in the rectangular window of commutator segment middle part, stiffening ring is installed, is carried out compression-molding process again, manufacture and partly mould commutator.
Mica sheet A1 insulation is set between two commutator segments, and A2 is cut apart with plastic member, has reduced the globality of plastic member.
Increased stiffening ring A3 at the commutator segment length direction, by last Fig. 2, Fig. 3, Fig. 4 as can be known, stiffening ring has only been strengthened the constraint in cross section in the commutator segment, outer cross section all is not subjected to the constraint of stiffening ring.Under the effect of temperature and rotary centrifugal force, very easily produce the film dancing fault.
The utility model content:
The purpose of this utility model is exactly the deficiency at prior art, and provides blade inserting overall plastic commutator, and it improves the commutator segment rotary centrifugal force of anti-high speed ability, and commutator film dancing fault can not take place.
Technology solution of the present utility model is as follows:
The overall plastic commutator of blade inserting comprises commutator segment and plastic member, and plastic member is the hollow cylinder of cap portion and back cap portion before having, and forms several and trip on the plastic member, and trip is made up of straight section and trapezoidal sections; Trapezoidal sections is molded over the top of straight section, and straight section is molded on the hollow cylinder;
Commutator segment by the cross section be trapezoidal commutator segment main body, step-like elevated portion and anti-drop block constitutes, elevated portion is molded on the commutator segment main body, anti-drop block is molded over the bottom of commutator segment main body, form draw-in groove between anti-drop block and the commutator segment main body, trapezoidal sections is fastened in the draw-in groove, anti-drop block is compressed on the bottom of trapezoidal sections, and the right-hand member of commutator segment resists on the inner left wall of back cap portion.
The trip at cap portion place forms extension before described, and extension is molded over the top of trapezoidal sections, and elevated portion is pressed on the extension.
Form groove milling on the described elevated portion.
The beneficial effects of the utility model are:
1, the overall plastic commutator of copper pipe cold-extruded formula film dancing failure rate: 1000ppm when directly driving the starter application, the overall plastic commutator of blade inserting is the film dancing failure rate when directly driving the starter application: 20ppm.
2, retarding starter armature rotating speed is too high, can not adopt the overall plastic commutator of copper pipe cold-extruded formula.Blade inserting is partly moulded commutator and is used at retarding starter.Film dancing failure rate: 1000ppm, the overall plastic commutator of blade inserting is used at retarding starter.Film dancing failure rate:＜100ppm.
3, blade inserting is partly moulded commutator copper material utilance 65%, and the copper material consumption of the overall plastic commutator of blade inserting and circular pipe type approach.Descend 45% than the consumption of blade inserting commutator copper material.
4, the utility model was through 2 years pilot productions, and commutator film dancing fault does not take place about 680,000 of the starter that employing this patent commutator is produced.
Description of drawings:
Fig. 1 is for partly moulding the structural representation of commutator in the prior art;
Fig. 2 is the A of Fig. 1---the A cutaway view;
Fig. 3 is the B of Fig. 1---the B cutaway view;
Fig. 4 is the C of Fig. 1---the C cutaway view;
Fig. 5 is structural representation of the present utility model;
Fig. 6 is the A of Fig. 5---the A cutaway view;
Fig. 7 is the B of Fig. 5---the B cutaway view;
Fig. 8 is the schematic diagram of commutator segment and draw-in groove fit structure;
Fig. 9 is the right view of Figure 10;
Figure 10 is the structural representation of commutator segment.
Among the figure: 1, commutator segment; 11, commutator segment main body; 12, elevated portion; 121, groove milling; 13, anti-drop block; 14, draw-in groove; 2, plastic member; 2a, preceding cap portion; 2b, back cap portion; 21, trip; 211, straight section; 212, trapezoidal sections; 213, extension.
Embodiment:
Embodiment: see shown in Fig. 5 to 10, the overall plastic commutator of blade inserting comprises commutator segment 1 and plastic member 2, and plastic member 2 is the hollow cylinder of the 2a of cap portion before having and the back cap 2b of portion, form several and trip 23 on the plastic member 2, trip 23 is made up of straight section 211 and trapezoidal sections 212; Trapezoidal sections 212 is molded over the top of straight section 211, and straight section 211 is molded on the hollow cylinder;
The trip 23 at cap portion 2a place forms extension 213 before described, and extension 213 is molded over the top of trapezoidal sections 212, and elevated portion 12 is pressed on the extension 213.
Operation principle: because commutator segment 1 is fastened on the plastic member 2 tightly, so it improves the commutator segment rotary centrifugal force of anti-high speed ability, commutator film dancing fault can not take place.
Claims (3)
1. the overall plastic commutator of blade inserting comprises commutator segment (1) and plastic member (2), it is characterized in that:
Plastic member (2) is cap portion (2a) before having and the back hollow cylinder of cap portion (2b), forms several and trip (23) on the plastic member (2), and trip (23) is made up of straight section (211) and trapezoidal sections (212); Trapezoidal sections (212) is molded over the top of straight section (211), and straight section (211) is molded on the hollow cylinder;
Commutator segment (1) is trapezoidal commutator segment main body (11), step-like elevated portion (12) and anti-drop block (13) formation by the cross section, elevated portion (12) is molded on the commutator segment main body (11), anti-drop block (13) is molded over the bottom of commutator segment main body (11), form draw-in groove (14) between anti-drop block (13) and the commutator segment main body (11), trapezoidal sections (212) is fastened in the draw-in groove (14), anti-drop block (13) is compressed on the bottom of trapezoidal sections (212), and the right-hand member of commutator segment (1) resists on the inner left wall of back cap portion (2b).
2. the overall plastic commutator of blade inserting according to claim 1, it is characterized in that: the trip (23) that preceding cap portion (2a) locates forms extension (213), extension (213) is molded over the top of trapezoidal sections (212), and elevated portion (12) is pressed on the extension (213).
3. the overall plastic commutator of blade inserting according to claim 1 is characterized in that: form groove milling (121) on the elevated portion (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320103306 CN203150869U (en) | 2013-03-07 | 2013-03-07 | Insert piece type all-plastic commutator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320103306 CN203150869U (en) | 2013-03-07 | 2013-03-07 | Insert piece type all-plastic commutator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203150869U true CN203150869U (en) | 2013-08-21 |
Family
ID=48978366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320103306 Expired - Fee Related CN203150869U (en) | 2013-03-07 | 2013-03-07 | Insert piece type all-plastic commutator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203150869U (en) |
-
2013
- 2013-03-07 CN CN 201320103306 patent/CN203150869U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130821 Termination date: 20160307 |