JPS6194541A - Brush device - Google Patents

Abstract

PURPOSE:To easily replace a carbon brush, by a method wherein the carbon brush is inserted into a rush holder, and wherein a captive engaging section provided for a top plate is engaged with a captive engaging section for the brush holder. CONSTITUTION:When a carbon brush 11 is abraded, then a lid section 16 for a brush holder 12 is bent and cut off, and the carbon brush 11, a spring 21 and a pigtail 22 connected to the lid section 16 are removed with the lid section 16. Then, a new carbon brush 23 is inserted into the brush holder 12, and a top plate 24 is fitted on the counter-commutator side opening edge of the brush holder 12, and renewed segments 28 are inserted into engaging slots 15, and the top plate 24 is captively engaged with the brush holder 12, and the brush is completely replaced by inserting a connecting terminal 25 pressure-fitted to the tip of a new pigtail 27, into the secondary terminal 14 of the brush holder 12.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a brush device for a commutator motor used in vacuum cleaners, juicers, water heaters, power tools, and the like.

Conventional configurations and their problems As the automatic assembly of electric motors progresses, the automation of connecting the brush holder and field winding, especially in the case of rectified r motors, progresses, resulting in the complexity of the shape of the brush holder. is being forced to change. For this reason, it has become difficult and complicated to replace the repair brush.

Uncertainty is seen as a problem.

- The conventional brush holder as described above will be explained below with reference to the drawings.

Figure 5 shows the oblique view of a conventional brush device? 6 shows a perspective view of the brush device with the carbon plano taken out for brush replacement, and FIG. 7 shows a perspective view of a new carbon brush.

In these figures, 'ζ and 41 are carbon brushes that have worn out by 1 cent. 42 is a rectangular cylinder-shaped brush holder, and 43 is a carbon brush 4 provided on the side opposite to the commutator of the brush holder 42.
The cover qH144 that prevents the brush holder 4 from popping out
These terminals are integrally formed with the metal plate 2, and are formed by punching a single metal plate into a predetermined shape and bending it. 45 is the field of winding end, terminal 44
and are connected to each other by welding or the like. 51 is a spring that presses the carbon plano 41 against the commutator 18; 52;
is a pigtail that electrically connects the carbon brush 41 and the brush holder 42, and one end is connected to the carbon brush 41.
The other end is connected to the lid part 43 by soldering or welding. 53 is a new carbon brush for replacement, and 54 is a new pigtail with one end embedded in the new carbon brush 53.

In the brush device configured as described above, when replacing the worn carbon brush 41, the cover portion 4 of the brush holder 42 is
3, take out the carbon brush 41, cut the pigtail 52 at the base of the lid part 43, remove the spring 51,
I had to assemble the new Carbon Plano 53 in the reverse order.

However, in the above configuration, when installing the new carbon blank 53, the spring 51 is connected to the new pigtail 5.
4 and solder or weld it to the lid part 43.
ζ）bana6. Zu, Shika J, Iij Shii Pigtail 5
4 must be connected to the lid part 43 while controlling its length, and the workability is: l! - Requires jigs, etc. for connection. It had the disadvantage of low reliability.

OBJECTS OF THE INVENTION An object of the present invention is to provide a brush device that allows carbon brushes to be replaced easily and reliably.

Structure of the Invention In the brush device of the present invention, a terminal is provided on the plano holder, and a retaining engagement portion (engaging hole) is provided on the opening edge on the side opposite to the commutator, and a pigtail with one end embedded in the carbon plano is connected to the spring and the top plate. , and fix the connecting terminal to the other end of the pigtail. Insert the carbon blank into the brush holder and attach it to the opening edge of the brush holder on the side opposite to the commutator. Since the structure is such that the grounding terminal is attached to the terminal by engaging the T front engagement part of the brush holder and attaching the grounding terminal to the terminal, the plano 2 big ear, spring, top plate and contacting Fk41 (all in one piece can be used as a replacement unit. Just by making preparations, brush replacement can be easily and reliably performed without using soldering or F6 welding.

Description of Embodiment 1 An embodiment of the present invention will be explained based on FIGS. 1 to 4. Fig. 3 is a perspective view of the brush device showing the state before taking out the worn carbon brush, Fig. 1 is a perspective view of the plano device showing the state in which the worn carbon brush is taken out, and Fig. 2 includes the new carbon brush. FIG. 4 is a perspective view of the replacement unit, and FIG. 4 is a perspective view of the brush device after brush replacement.

In these figures, 11 is a worn carbon blank. 12 is a rectangular cylinder-shaped plano holder; 13 is a first terminal integrally formed with the brush holder 12; 14 is a second terminal integrally formed with the brush holder 12; 16;
is a lid part provided at the opening on the side opposite to the commutator of the brush holder 12 to prevent the carbon brush 11 from coming out; The lid portion 16 is connected to the opening edge of the plano holder 12 on the side opposite to the commutator via a narrow portion 16a. !
Reference numeral 5 denotes a pair of engagement holes provided at the opening edge of the brush holder 120 counter commutator + 1111. Reference numeral 17 denotes an end of the field TAI winding, which is connected to the first terminal 13 by welding or the like. 18 is a commutator, 21 is a spring that presses the carbon brush 11 against the commutator 18, and 22 is a pigtail that electrically connects the carbon brush 11 and the brush holder 12, one end of which is embedded in the 1 & end of the carbon brush 11. The other end is connected to the lid part 16 by welding or the like.

23 is a new carbon plano for replacement, 24 is a U-shaped top plate attached to the opening edge of the carbon brush 12 on the side opposite to the commutator, 25 is a connecting terminal attached to the terminal 14, 26 is a new spring, and 27 is a new spring. With new pigtails
One end is embedded in a new carbon brush 23, which is passed through a spring 26 and inserted into a hole in the top plate 24, and is soldered to the top plate at a predetermined length. The other end is crimped to a connecting terminal 25, which is integrated in advance as a replacement unit.Reference numerals 28 are formed by cutting inwards on both horizontal pieces of the top plate 24, and are used as anti-commutators of the brush holder 12. These are a pair of cut and raised pieces that prevent the top plate 24 from coming off from the brush holder 12 by engaging with the engagement holes 15 on the edge of the side opening.

In the brush device configured as described above, when the carbon plano 11 is worn out, the cover 16 of the brush holder 12
The carbon brush 11. is bent and cut out and connected to the lid part 16. The spring 21 and the pigtail 22 are attached to the lid part 16.
Remove with. Next, the new carbon brush 23
is inserted into the brush holder 12, the top plate 24 is attached to the opening edge of the brush holder 12 on the side opposite to the commutator, and the cut and raised piece 28 is inserted into the engagement hole 15 to prevent the top plate 24 from coming out from the planar holder 12. Then, connect the connecting terminal 25 crimped to the tip of the new pigtail 27 to the second part of the brush holder 12.
Brush replacement is completed by inserting the brush into the terminal 14 of the brush.

As described above, according to this embodiment, the brush holder 12
A first terminal 13 for field coupling connection and a second terminal 14 for pigtail connection are provided at the opening edge on the side opposite to the commutator of the carbon blank. -n1 of pigtail 27 at the rear end of 23
, pass the pigtail 27 through the spring 26 and the U-shaped top plate 24 , crimp the connecting terminal 25 to the other end of the pigtail 27 , pass the carbon brush 23 through the brush holder 12 , and connect the top plate 24 to the anti-rectifier of the plano boulder 12 The engaging hole 15 and the cut and raised piece 28 are attached to the child side opening edge.
Since the top plate terminal 25 is inserted from the plano holder 12 into the second terminal 14 by fitting the carbon plano 23. Top plate 24. Spring 26. Pigtail 27 and contact Vt. Just by preparing the integrated terminal 25 as a replacement unit, you can easily replace the blank by soldering. This can be done easily and reliably without using a l'6 welding machine.

In addition, in the above embodiment, the engagement with the brush holder 12 +t
Although the top plate 24 is provided with a cut-and-raised piece 28, the top plate 24 may be provided with an engaging hole so that the outward-facing cut-and-raised piece is sunk into the planar holder 12. .

Effects of the Invention In the brush device of the present invention, a terminal is provided on the brush holder, and a T-table retaining portion (engaging hole) is provided on the opening edge on the side opposite to the commutator, and a pigtail with one end embedded in the carbon brush is connected to the spring and Pass it through the top plate, fix the connecting terminal to the other end of the pigtail, insert the carbon brush into the Mii brush holder, attach it to the opening edge of the brush holder on the side opposite to the commutator, and attach the retaining part provided on the top plate. (cut and raised piece) is engaged with the retaining part of the brush holder to prevent it from coming out, and the connection terminal is attached to the terminal, so the brush, pigtail, spring, top plate, and connection terminal can be combined as a replacement unit. Just by making preparations, you can easily and reliably replace the brushes without using solder or /8 contacts.

[Brief explanation of the drawing]

Figure 1 is a perspective view of the brush device showing the worn carbon brush taken out, Figure 2 is a perspective view of the replacement unit including the fli I carbon brush, and Figure 3 is the worn carbon brush taken out. Slope of brush device showing previous state? Figures A and 4 are perspective views of the brush device after plano replacement, and Figure 5 is a perspective view of the conventional brush device. 4 and 6 are perspective views of the brush device with the carbon brush taken out for plano replacement, and FIG. 7 is a perspective view of a new carphone flanno. DESCRIPTION OF SYMBOLS 11... Worn carbon plano, 12... Plano holder, 13... First terminal, 14... Second terminal, 15... Engagement hole, 16... Cover, I7...
... Field winding, 18 ... Commutator, 21 ... Pigtail, 22 ... Spring, 23 ... New carbon brush, 24 ... Top plate, 25 ... Connection terminal, 2
6...New spring, 27...New pigtail, 2
8... Cut-and-raised piece H2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7

Claims (1)

[Claims] A cylindrical brush holder having a terminal, a carbon brush inserted into this brush holder from an opening on the side opposite to the commutator, a pigtail with one end connected to the rear end of this carbon brush, and a carbon brush passed through this pigtail and attached to the brush holder. a top plate that is mounted on the opening edge on the opposite commutator side and engages with the opening edge on the opposite commutator side of the brush holder to prevent the unevenness from slipping out; and a top plate that is passed through the pigtail and is located between the carbon brush and the top plate. A brush device comprising a spring and a connection terminal fixed to the other end of the pigtail and attached to the terminal.