CN2531558Y

CN2531558Y - Reinforced commutator

Info

Publication number: CN2531558Y
Application number: CN 02201790
Authority: CN
Inventors: 杨积锡; 林祥清
Original assignee: CHANGCHENG COMMUTATOR Co Ltd RUIAN CITY
Current assignee: ZHEJIANG CHANGCHENG COMMUTATOR CO Ltd
Priority date: 2002-01-14
Filing date: 2002-01-14
Publication date: 2003-01-15
Anticipated expiration: 2012-01-14

Abstract

The utility model discloses a fixing commutator, comprising a commutating segment 1 and a moulding material 3, a ceramic rod 2 is embedded between the commutating segments, the ceramic rod and the commutating segment are mutually intervallic arranged. The ceramic rod is high temperature resistant material and insulation material, the ceramic rod won't absorb water and moisten, which instead of the traditional mica lamination. Compared with prior art, the utility model has the advantages of small deformation, good insulating property and firmly reliability, which decreases the reject rate of productions, improves the service life and property of the commutator, is specially suitable for the motor of dust catcher.

Description

Reinforced commutator

一、技术领域1. Technical field

本实用新型涉及一种电机用的换向器。The utility model relates to a commutator for a motor.

二、背景技术2. Background technology

现有的换向器为了达到加固的目的通常在换向片与云母片之间嵌置金属加固环(可称金属加固型换向器)。但该金属加固环在生产过程中容易受到压力作用而导致移位，使换向器的绝缘性能下降；而且此换向器在电机高速运转或超载运转时，随着温度的升高，由于金属加固环具有热敏性，易热膨胀，使整个换向器产生变形。另外，换向器在常温下工作，云母片易吸水受潮，导致换向片间不良现象。In order to achieve the purpose of reinforcement, the existing commutator usually embeds a metal reinforcement ring between the commutator segment and the mica segment (it can be called a metal reinforced commutator). However, the metal reinforcement ring is easily displaced by pressure during the production process, which reduces the insulation performance of the commutator; The reinforcement ring is thermally sensitive and prone to thermal expansion, which will deform the entire commutator. In addition, the commutator works at normal temperature, and the mica sheet is easy to absorb water and get damp, which leads to bad phenomena between the commutator sheets.

三、发明内容3. Contents of the invention

本实用新型的目的在于克服上述的不足，而提供一种变形量小、绝缘性能好的加固型换向器。The purpose of the utility model is to overcome the above-mentioned shortcomings, and provide a reinforced commutator with small deformation and good insulation performance.

本实用新型的目的通过如下技术方案来实现：一种加固型换向器，包括换向片、模塑料，在换向片之间嵌置陶瓷棒，且所述的陶瓷棒与换向片相互间隔配合排列。The purpose of the utility model is achieved through the following technical solutions: a reinforced commutator, including commutation pieces, molding compound, ceramic rods are embedded between the commutation pieces, and the ceramic rods and the commutation pieces are mutually Align with intervals.

采用本实用新型结构后，由于所述的陶瓷棒耐高温；且不会吸水受潮，代替了传统的云母片；以及该陶瓷棒可以分解电机工作时碳刷对换向器所产生的沿圆周方向的作用力。因此，本实用新型与现有技术相比，具有变形量小、绝缘性能好、牢固可靠的优点，从而降低了产品废品率，提高了换向器的使用寿命和性能。After adopting the structure of the utility model, because the ceramic rod is resistant to high temperature; and it will not absorb water and get damp, it replaces the traditional mica sheet; force. Therefore, compared with the prior art, the utility model has the advantages of small deformation, good insulation performance, firmness and reliability, thereby reducing the product rejection rate and improving the service life and performance of the commutator.

四、附图说明4. Description of drawings

图1为本实用新型加固型换向器的纵剖示意图。Fig. 1 is a longitudinal sectional schematic diagram of a reinforced commutator of the present invention.

图2为图1的B-B剖视图。Fig. 2 is a B-B sectional view of Fig. 1 .

五、具体实施方式5. Specific implementation

下面结合附图与实施方式对本实用新型作进一步的详细描述。The utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments.

参照图1、图2可知，本实用新型加固型换向器由换向片1、陶瓷棒2、模塑料3、衬套4构成，其中所述的陶瓷棒2嵌置在换向片1之间，且陶瓷棒2与换向片1相互间隔配合排列。由于陶瓷棒耐高温(1000℃以上)，故当电机高速运转或超载运转温度升高时，陶瓷棒不会因温度变化而热胀冷缩，还在换向器内部起到一定的散热作用，使换向器变形很小，电机运转平稳。且陶瓷棒是绝缘材料，也不会吸水受潮，代替了传统的云母片，故换向器的绝缘性能得到了提高。该陶瓷棒对整个换向器的零件结合牢固性还起到重要作用。在电机工作时，碳刷与换向器表面磨擦接触能产生沿圆周方向的作用力，因陶瓷棒设计在换向器内部，与换向片相互间隔配合排列，使得作用力分解，换向器变形很小，并且加强了换向器的牢固性。因此，本实用新型与现有技术相比，具有变形量小、绝缘性能好、牢固可靠的优点，从而降低了产品废品率，提高了换向器的使用寿命和性能，特别适用于吸尘器电机。此外，从成本方面来看，该换向器成本比金属加固型换向器成本低5％左右。Referring to Fig. 1 and Fig. 2, it can be seen that the reinforced commutator of the present invention is composed of a commutator piece 1, a ceramic rod 2, a molding compound 3, and a bushing 4, wherein the ceramic rod 2 is embedded in the commutator piece 1 between, and the ceramic rods 2 and the commutator segments 1 are spaced and arranged in cooperation with each other. Because the ceramic rod is resistant to high temperature (above 1000°C), when the motor is running at high speed or overloaded, the temperature rises, the ceramic rod will not expand and contract due to temperature changes, and it can also play a certain role in heat dissipation inside the commutator. The deformation of the commutator is small, and the motor runs smoothly. Moreover, the ceramic rod is an insulating material, which will not absorb water and get damp, and replaces the traditional mica sheet, so the insulation performance of the commutator has been improved. The ceramic rod also plays an important role in the bonding firmness of the parts of the whole commutator. When the motor is working, the frictional contact between the carbon brush and the surface of the commutator can generate a force along the circumferential direction. Because the ceramic rod is designed inside the commutator, it is arranged with the commutator at intervals, so that the force is decomposed and the commutator The deformation is small and the firmness of the commutator is enhanced. Therefore, compared with the prior art, the utility model has the advantages of small deformation, good insulation performance, firmness and reliability, thereby reducing the product rejection rate, improving the service life and performance of the commutator, and is especially suitable for vacuum cleaner motors. In addition, in terms of cost, the cost of the commutator is about 5% lower than that of the metal-reinforced commutator.

Claims

1, a kind of reinforcement type commutator comprises commutator segment (1), moulding compound (3), it is characterized in that: set ceramic rod (2) between commutator segment (1), and described ceramic rod (2) cooperates arrangement with commutator segment (1) space.