CN201667574U

CN201667574U - Brush box bottom plate structure of carbon brush motor

Info

Publication number: CN201667574U
Application number: CN2009201747280U
Authority: CN
Inventors: 袁银菊
Original assignee: YUYAO ACTUATOR ELECTRIC MOTOR CO Ltd
Current assignee: YUYAO ACTUATOR ELECTRIC MOTOR CO Ltd
Priority date: 2009-08-26
Filing date: 2009-08-26
Publication date: 2010-12-08
Anticipated expiration: 2019-08-26

Abstract

Disclosed is a brush box bottom plate structure of a carbon brush motor, which belongs to the technique field of motor parts, and comprises a plastic support, a brush box and a brush box bottom plate, a carbon brush, a carbon brush line, an external lead and a volute spring, and two bottom plate slots fixed with the brush box as well as a bendable U-shaped structure are arranged on the brush box bottom plate; the carbon brush line and the external lead are disposed in the U-shaped structure, and the carbon brush line and the external lead are connected in the U-shaped structure in bending way. The U-shaped structure has two sides, and an external lead bayonet is formed in the U-shaped structure. The carbon brush line exposed and connected in bending way and the external lead are stacked in the external lead bayonet of the U-shaped structure, both sides of the U-shaped structure are tightly pressed on the exposed carbon brush line and the external lead. Compared with the prior art, the utility model has the benefits: the external lead can be connected with the carbon brush line through the U-shaped structure, the contact is firm, the conductive area is large, and the overload capacity is strong; and the riveting means is adopted for fixation when in assembly, so the assembly is simple and reliable.

Description

A kind of carbon brush motor brush box bottom board structure

Technical field

The utility model relates to a kind of carbon brush motor brush box bottom board structure, particularly relates to the carbon carbon brush motor brush box bottom board structure that a kind of carbon brush line and outer lead can bend in brush box bottom board and be connected.

Background technology

The carbon brush motor need be connected carbon brush usually in motor inside with outer lead, conventional motor takes following mode to connect usually:

First kind of mode: as shown in Figure 1, the carbon brush line directly is connected by terminal with outer lead.The advantage of this mode is: carbon brush directly is connected with outer lead, and conductive area is big, and contact is reliable, and overload capacity is extremely strong.Shortcoming is: carbon brush is connected the back assembling with outer lead no longer convenient, is fixed on the end cap by modes such as line ball pieces usually, brought inconvenience to assembling.

The second way: as shown in Figure 2, carbon brush line and outer lead are welded on the brush box bottom board by the mode of welding respectively.The advantage of this mode is: carbon brush contacts reliably with outer lead, and conductive area is big, and overload capacity is strong.Shortcoming is: welding equipment requires high, if failure welding, often in use, the carbon brush line easily comes off, and causes motor failure.

The third mode: carbon brush by with spring and brush box between contact conduction, weld outer lead on brush box or the brush box bottom board.This mode is fit to small-power, low current, low-power motor.Its advantage is simple in structure; Shortcoming is that to bear electric current little, and overload capacity is little, and when big electric current, spring loses elastic force owing to current density is easy to generate the phenomenon of reducing internal heat greatly.

The utility model content

The purpose of this utility model is the defective at above-mentioned prior art, and a kind of carbon brush motor brush box bottom board is provided, and it is simple and reliable to reach the structure assembling, and it is firm that outer lead contacts with the carbon brush line, and conductive area is big, the purpose that overload capacity is strong.

The technical scheme taked of the utility model is to achieve these goals: a kind of carbon brush motor brush box bottom board structure, comprise plastic stent, brush box, brush box bottom board, carbon brush, carbon brush line, outer lead and snail shape spring, but have on the described brush box bottom board two with the fixing base plate draw-in groove of brush box and the U-shaped structure of a bending; Carbon brush line and outer lead are contained in the U-shaped structure, and the carbon brush line bends in the U-shaped structure with outer lead and is connected.

Described U-shaped structure has two sides, in the U-shaped structure, forms an outer lead bayonet socket.Described bending is connected to exposed carbon brush line and outer lead stacks in the outer lead bayonet socket of U-shaped structure, the dual-side of U-shaped structure is pressed on exposed the carbon brush line and outer lead.Two brush box pin are arranged at described brush box bottom, are through respectively in two base plate draw-in grooves, and are assemblied on the plastic stent, and the brush box pin is connected for riveted joint with plastic stent.

Compared with prior art, the beneficial effects of the utility model are:

(1) outer lead can be connected by the U-shaped structure with the carbon brush line, it is firm that outer lead contacts with the carbon brush line, and conductive area is big, and overload capacity is strong.

(2) outer lead is connected by the U-shaped structure with the carbon brush line, adopts the riveted joint mode to fix during assembling, makes assembling simple and reliable.

(3) less demanding to assembly equipment, as long as common punch press is arranged, as adopting the common punch press of " cockchafer JB-1 " type.

Description of drawings

Accompanying drawing 1: prior art 1: the carbon brush line directly is connected by terminal with outer lead;

Accompanying drawing 2: prior art 2: carbon brush line and outer lead are welded on the brush box bottom board by the mode of welding respectively;

Accompanying drawing 3 (A): the utility model assembly structure figure;

Accompanying drawing 3 (B): the utility model accompanying drawing 3 (A) A-A direction cutaway view;

Accompanying drawing 3 (C): the utility model accompanying drawing 3 (A) A-A direction front cross sectional view that bends;

Accompanying drawing 4 (A): amplification assumption diagram before the assembling of the utility model brush box bottom board;

Accompanying drawing 4 (B): the utility model accompanying drawing 4 (A) B-B direction cutaway view;

Description of reference numerals: 1 plastic stent, 2 brush boxs, 21 brush box pin, 3 brush box bottom board, 31 base plate draw-in groove 32U shape structures, 321 sides, 322 lead bayonet sockets, 4 carbon brush, 5 carbon brush lines, 6 outer leads, 7 vortex-like springs

Embodiment

The utility model is described in further detail below in conjunction with the drawings and specific embodiments, but not as to qualification of the present utility model.

Embodiment:

Press shown in Fig. 3 (A), (B), (C) and Fig. 4 (A), (B), a kind of carbon carbon brush motor brush box bottom board structure, comprise plastic stent 1, brush box 2, brush box bottom board 3, carbon brush 4, carbon brush line 5, outer lead 6 and vortex-like spring 7, but have on the brush box bottom board 3 two with the fixing base plate draw-in groove 31 of brush box 2 and the U-shaped structure 32 of a bending; Carbon brush line 5 and outer lead 6 are contained in 32 li on U-shaped structure, and carbon brush line 5 bends in U-shaped structure 32 with outer lead 6 and is connected.U-shaped structure 32 has two sides 321, in U-shaped structure 32, forms an outer lead bayonet socket 322.Bend and be connected to exposed carbon brush line 5 and outer lead 6 stacks in the outer lead bayonet socket 322 of U-shaped structure 32, bend into shape shown by common cockchafer JB-1 type punch press, exposed carbon brush line 5 is pressed on outer lead 6, thus fixedly carbon brush and lead.

The dual-side 321 of U-shaped structure 32 is pressed on exposed the carbon brush line 5 and outer lead 6.Two brush box pin 21 are arranged at brush box 2 bottoms, are through respectively in two base plate draw-in grooves 31, and are assemblied on the plastic stent 1, and brush box pin 21 and plastic stent 1 are for being welded to connect.

Above-described embodiment, the utility model embodiment a kind of more preferably just, the common variation that those skilled in the art carries out in the technical solutions of the utility model scope and replacing all should be included in the protection range of the present utility model.

Claims

1. a carbon brush motor brush box bottom board structure comprises plastic stent, brush box, brush box bottom board, carbon brush, carbon brush line, outer lead and vortex-like spring, but it is characterized in that having on the brush box bottom board two with the fixing base plate draw-in groove of brush box and the U-shaped structure of a bending; Carbon brush line and outer lead are contained in the U-shaped structure, and the carbon brush line bends in the U-shaped structure with outer lead and is connected.

2. a kind of carbon brush motor brush box bottom board structure according to claim 1 is characterized in that described U-shaped structure has two sides, in the U-shaped structure, forms an outer lead bayonet socket.

3. a kind of carbon brush motor brush box bottom board structure according to claim 1 and 2, it is characterized in that described bending is connected to exposed carbon brush line and outer lead stacks in the outer lead bayonet socket of U-shaped structure, the dual-side of U-shaped structure is pressed on exposed the carbon brush line and outer lead.

4. a kind of carbon brush motor brush box bottom board structure according to claim 1 is characterized in that two brush box pin are arranged at described brush box bottom, is through respectively in two base plate draw-in grooves, and is assemblied on the plastic stent, and brush box pin and plastic stent are for being welded to connect.