JPS6043043A - Brush holder of commutator motor - Google Patents

Abstract

PURPOSE:To facilitate assembling of a commutator motor by mounting a holder for containing a completed carbon brush product and a cover for covering the product on the frame of a motor. CONSTITUTION:A stepped portion 1d is formed on the end hole 1c of a frame 1 of a commutator motor, and a square rib 1e is extended from the portion. An engaging portion 1f, a notch portion 1g and a collar 1h are provided on the rib 1e. A cover 13 for covering the hole 1c and engaging the portion 1d is provided. A brush holder 60 is formed of a cylindrical conductive bracket 60a, a body 60b of an insulating material for convering the bracket, and a notched portion 60c of the bracket 60a, and contains a completed carbon brush procuct 7. A cap 80 has a recess 80a for convering the holder 60, engaged with the body 60b and covered with the cover 13. These are assembled by engaging with the engaging portion 1f of a pair of ribs 1e in the state that the cap 80 and the holder 60 are engaged with each other, and positioning with the collar 1h.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an improvement of a brush holding device a of a commutator motor used as a drive source for, for example, an electric tool.

[Prior art]

The conventional Yuzu device will be explained with reference to FIGS. 1 to 3. In Figure VC, fi+ is the frame of the commutator motor, (2)
is this frame ill Vc fitting 1 piece stator, (3) is this stator (2) fixed to the whole frame body 0) - screw, (4)
(6) is a rotor that supports the commutator (4a), (6) is a bearing that rotatably supports this rotor (4), and (6) is a frame body.
A glove holder that fits into the fitting hole (1a) of
) l: Consists of a main body (6b) made of a covering insulating material. (7) Ha guide? It is a complete internal brush that is inserted into a metal fitting (Hiro), and consists of a carbon brush (7a), a pigtail (7b), a spring holder (7C), and a spring (7d). (8) is a retaining screw that brings the spring receiver (7c) into contact with the conductive metal fitting (64);
6b). (9) Stator +21 (7
? Lead wire, 101H Terminal connected to this lead wire (9), (11) is this terminal side and the above conductive metal fitting (6a)
The screw 1121 is the m1ji of the frame (1).
This is a set screw that is screwed into the threaded portion (lb) and completely prevents the brush holder (6) from moving.

In the FL7 robot configured as described above, the stator (
2) lead wire (!+1, yii, to child (101,
Hiron'+, jf <ri tool (6a), splash catch (7a)
, pigtail (7b)' + carbon brush ('7a).

The rotor (4) is passed through 71i-J, and the rotor (4) rotates as is well known.

By the way, when assembling the glove holder (6) and the tool brush (7), it is necessary to fit it into the fitting hole (la) of the brush holder-131'e frame (1:) having a circular outer circumference.

Next, attach the set screw (+2
+ = r7 p Combined with Planborda t61 k , +
The brush holder fljl is completely prevented from moving by pressing with the female screw (121).Next, the carbon brush product (7)
2. Place the carbon brush ('78.
) 'i Contact with the commutator (4a), screw together the holding screw (8) with the main body (6b) &, and bring the spring receiver (7c) and the conductive tube fitting (6a) into electrical contact. Connect the lead wire (9) of the stator (2) to the key terminal IQi with the screw (11).
It is connected to the conductive metal fitting (6a) at. In this way,
The stator (2) and rotor (4) are electrically connected.

However, since the brush holder (6) is formed with a circular outer diameter, the fitting hole (la) and the main body (6b) cannot be fitted and fixed by setting with the female screw 02'ltC. Now comes the brush holder! 61? Fixing it to the frame i11 - Because the work of fixing it is troublesome, I decided to screw the carbon brush product (7) onto the main body (6b) with the retaining screw (8). The work of screwing together the retainer screw (8) housed inside is troublesome as it is done against the elastic force of the spring (7d). Not only that, but also the spring retainer ('i'
Even if c) is in a tilted state, it cannot be visually observed, and the holding screw (8) is screwed into the -+' position, and the splash receiver (
7C) and the lead i+J metal fitting (6a) may become insufficient.

[Summary of the invention]

This invention lamp was made for IC to solve the above-mentioned drawbacks, and the carbon brush is inserted into a cylindrical conductive metal fitting, and the outer circumference of this conductive metal fitting is loosened! A main body made of a rectangular insulating material, and one end of the above-mentioned conductive fitting fitted into the main body? A cap made of insulating material with a rectangular cross section that covers the
Eh, this cap, the main body, and the entire commutator 1 (by attaching it to the frame of the Σmotor, it is easy to assemble the flage holder fl111 and the carbon brush), and the motor brush U1 holding device f2 ) This means that all eyes are 1 white.

[Example of fire example] ゛Think of this firing l no J-')! Sei J or figures 4 to 7
Q', / I>X+ theory January -t Z,. In the figure, (10) U-frame body (1)':lN fMs ? r
Opening low 4-no) opening; ≦, (l('L)tithis opening I
J t; (10 steps formed in S (lc), (le)
rrThis 1 da part (a square lip extending from ldl,
There is a rectangular low joint (1f), 7 pieces formed at one end of the upper part in Fig. 4, a notch (1g), and 1 tongue formed at +'ir 2 at the lower part in Fig. 4. It has an inward facing flange (1h). (lj) is a bearing case that holds the bearing (61) and is integrally formed with the frame body ++H together with the lip. (+31i1j Opening 11 part (lc) of the frame body (1)
The cover fits into the stepped part (1d) above. (60) is attached to the fitting part (If) on the above-mentioned flange part (
11]) is a rectangular flange holder whose position is determined by 11), and a cylindrical thin-walled metal fitting (6Oa) and this
'1' Li metal fittings (60a) k Covering main body (I130b) made of insulating material, this main body (aob) and the above conductor 1
It consists of a metal fitting (60a) and seven tongue and groove cutouts (aOC), and a carbon brush spare part (7) is stored in the metal fitting (608). (80) Hayate brush holder (60) 2 square shaped caps ゛, V'
There is a concave aH (Boa) f on the J side, and the above body (6ob)
7-1 o
(llO) is a pair of 11 elements inserted into the four parts (80a) of the tongue cap (80) through the notch (1g) and the notch (60c), and the lead 61 (1)). 1) The concubine is sold.

-1- As shown in 4 nia 4 Narimiya t''L/Komono K o (0
Tengo, stator (2), lead wire II+, 7M child (
no), splash catch ('7c).

Bigsol ('71)), carbon brush ("" + I
j% Ryuko (4a) will be jll TIJ Zawaru.

By the way, when assembling, insert the finished bare brush (7) into the brush holder (6o) and insert the brush holder (7C).
Place the iW element (110) on the outside of the notch (60c).
11 more to the outside. Next, the young child (110)
'? Press with the cap (8o) and fit the cap (80) into the plastic plug (60). In this state, the brush holder (60) and the cap (80) are fitted together at the fitting part (Yuf) of the square rib (le), and the flange (21) is fitted.
, place b' is 7◇. After that, sword bar +13+
'(rThe first stage part (1d) is filled with gold, and the opening of the frame tl+ (le is completely closed.) Thus, the graph; l = Ruda (60) and the cap (8o) are ), it is stored in the frame i1i.

7 years ago, carbon plan complete attack product (7) and infant (110
) The fully housed flange holder (60) and the cap (a)) are fitted into the square low joint (If).
The flange (lh) and the cover (13) prevent vertical movement in FIG. 4.

In order to prevent the conventional conductive metal fitting (60a) and the terminal (1o) from being screwed together, an infant (IJ) is inserted between the splash catch (7c) and the cap (80). As the set screw (13), the fitting part (If), the collar part (belly), and the cover 031 are used.

Figures 8 to 10 show other embodiments of the present invention. Then, the concave part (L
M) is constructed with a larger diameter than the four parts (IL).

(IN) Id brush holder (60) and cap (so
) A pair of lips to be held in place, (13a) is a cover (13
A pair of lips (6 (to)
) are projections (80b) formed on the main body (6ob) of the brush holder (60) and fitted into the four parts (IM);
These are protrusions formed on the H cap (80) and fitted into the four parts (IL).

In the device configured as described above, when the
) and the protrusion (b) into the recess (river) and the fourth part (and), respectively, and then by placing the cover Q31 on the frame (1), the pair of lips (13a) of the cover (13) are formed.
) to prevent the cap (80) and brush holder (60) from being removed at the left end in FIG. That is, the brush holder (0
When fully inserting the carbon brush finished product (7) into the cap (80) and assembling it with the cap (80) in its core state,
The protrusion (sob) of 0) is in the recess (IM) of the frame fi+,
The protrusion (eoa) of the brush holder (60) is in the recess (IL)
After installation, the spring ('7d
) The cap (80) is attached to the brush holder (60) by the elastic force of the
It is unnecessary to insert the cap (80) while holding it down with the cover (131? cover 03) when it is attached to the frame body. Therefore, the cover [131 has the effect of making it easier to work on the equipment Z).

In addition to the history of this invention, FIG. 11 shows an example of the invention.
In the figure, a stator tightening screw, which will be described later, is inserted into one hole formed in the (lP)ia frame It). The figure shows it being inserted into the hole (IP) and screwed onto the stator (3).

In this configuration, the protrusion (601) of the brush holder (60)
The hole (IP) Y for inserting the stator tightening screw C can be used as the recess into which the stator tightening screw C is fitted, and the I'f'? It is easy to construct.

The 12th figure and the 14th figure Keko's departure [,! 110 Still another embodiment is Neo, in the figure, (6oθ) is located in the same part as the body (60b) of the brush holder (60). tl is a semicircular protrusion (8Ckl), which is provided on the ld middle cap (80), and is located at the joint with the main body (6ob).
Together with SOa), it is a semi-circular protrusion, and together with the protrusion (8 legs), it is lowered into the hole (IF) of the frame (1:).

In this configuration, the protrusion (60e) and the protrusion (8M)
and can be lowered into one fitting hole, for example, a hole (IP) for inserting a stator tightening screw, which simplifies the configuration. A cap (80 mm), like the one in Figure 11.
) and the brush holder (60) have protrusions (60d), respectively.

(sob) is provided, protrusion (6Qd,)
and (80b), and the four parts (II,) and the hole part (
In this case, if there is an error in the dimensions with the cap (
8o) and the brush holder (60), but in this configuration, both protrusions (60θ) and protrusions (8αl) are placed in one hole (IP).
If the cap (80) and the brush holder (60) are fitted together, a gap that would otherwise occur between the cap (80) and the brush holder (60) can be reliably prevented.

Next, another embodiment will be explained with reference to FIGS. 15 and 16. In the figure, (60f) is a conductive metal fitting installed in the main body (6011), and the upper end in the figure projects above the main body (60b).

With this configuration, a cap is attached to the top of the conductive metal fitting (60f).
(80) recess (80c) f can be fitted,
This prevents the cap (SO) from shifting when inserting the brush holder (ω) and cap (80) into the frame no., and allows assembly of the spring receiver (7c) and terminal (no) without tilting. This prevents the splash catch (7C) and the terminal (110) from having an abnormal European shape during assembly.

11. Other embodiments are explained in FIGS. 17 to 20. In the figure, (60g) U conductive metal fittings (6
A notch (8oθ) formed in the upper end of the cap (0f) is a notch formed in the cap (8o) opposite to this notch (60g). With this configuration, 4-1% metal fittings (6
0f) and the cap (80) both have a notch formed therein. When installing the terminal (110), after aligning the socket (7c) and the terminal (110). 1. MiK cap (130) It can be installed from above, making assembly easier.

Next, another embodiment will be explained with reference to FIGS. 21 to 23. In the figure, (IQI tri) is a pair of slanted ribs that protrude from the bearing case (1j), and is integrated with a pair of ribs ('JR) that hold the brush holder (60), the cap, and (so) the entire clamp. It has a function of holding the bearing case (1j) and a brush holder (60).
) and cap (80)k+9E. In this configuration, the brush holder (60) and the cap (60) are used as ribs for holding the bearing case (1j).
80) and a pair of ribs (lN) k that fully clamps.
The shape of the frame body (lH) can be made into k iir + elements, and has the effect of reducing the car M4.

〔Effect of the invention〕

As mentioned above, the charcoal and brush are inserted into a cylindrical conductive metal fitting, a main body made of loquat metal with a square cross section that follows the outer periphery of the conductive metal fitting, and a main body made of loquat metal with a square cross section that follows the outer periphery of the conductive metal fitting. The above-mentioned conductive metal fitting is equipped with a key made of an insulating material having a rectangular shape, and is attached to the cap, the above-mentioned main body, and the frame of the commutator armature. 1 so,
The conventional work of screwing in the cap screw, setscrew, 81 and terminal tightening screw becomes a waste, and the scale is not easy to assemble. This prevents the splash holder from deforming, and furthermore, the conductive metal fitting can be shaped into a rectangular shape along the outer periphery, making it possible to reduce the size of the main body of the brush holder and reduce the cost of the main body. It has the effect of

1.Protrusions are provided on the outer surface of both the W yarn and the main body.
At the same time, the frame of the commutator motor has a 1 facing the protrusion.
When one fitting part is provided and the protrusion is attached to the third fitting part, and the cap and the entire body frame are fitted, it is held in both the gap and the brush holder and the frame. This has the effect that the entire cover can be attached, making the process of attaching the cover easier.

One end of the conductive metal fitting protrudes from the main body, a cap is fitted into this cutout, and the cap and main body are attached to the frame of the commutator motor 1.纒′F
It can be used as a guide for the I+ metal fittings, and can prevent gaps from forming when mounting the cap, brush holder, and entire frame. It has the effect of completely preventing Atsushi.In addition, the -MM (t+++) of the conductive metal fitting protrudes from the main body, and this protrusion serves as the first notch and is also attached to the cap. When inserted into the cag through the first notch opposite to this first notch and the second ψJ notch, the splash receiver and the 91 item are fully aligned. After that, the cap (80) can be attached from above, which has the effect of making the cap device i easier.

For the first time in history, a bearing case was used in the frame of a commutator motor and fully supported the rotor of the commutator motor, and was equipped with seven ribs not provided in the frame but supporting the bearing case. By fully fitting the cap and the main body between the phases q of these plural ribs, the cap and the rib of the shield holder face 111 can be used as ribs for holding the bearing case, and the shape of the frame body can be... It is simplified and has the effect of reducing the weight of the frame.

[Brief explanation of the drawing]

Figure 1 is a side view of the main part of a conventional device, Figure 2 is a front view of a conventional brush holter, Figure 3 is a cross-sectional view when the presser screw is fully screwed into the 2f Bufunpolg... Figure 1, 4'54 The figure shows the main part of an embodiment of this invention. 7 (Side side view
A top view, FIG. 6 is a front view of the brush holder holder of this 9J, FIG. 7 is a side view of the brush holder with the cap attached, and FIG. 8 is a view of another embodiment of this 9J.
Figure 9 is a sectional view of the main parts of Figure 448, showing the state in which the cover has been removed from Figure 1a, Figure 8, and Figure 9. Figure 11 shows the history of this i54 and other embodiments K-f main part +41i i
Fig. fi, r, Fig. 12 shows other embodiments of this invention. Side 1×
1, Figure 15 shows other examples (r
Boat II+ 1fti diagram, side view of Figure 16,
1'/Figure is from this +! In the history of 1, other embodiments are shown: 1 sectional view, FIG. 18 is a side view 1, and FIG. 19 is a plan view,
Fig. 20 μ 1) 111 side view of the brush holter in Figs. Figure 23 is a plan view of the butterfly in the shape of a detached ruffle. Figure 23 is a side view taken along line B-B in Figure 22. In the figure, (1) is the frame, (, u+), (]a ) Relief, (7) is a carbon flage product, (60) U bluff holder, (aaa+. (60f) U conductive metal fitting, (60b) l'j fukyu, (
6(Jd), (60e), (80b)+5oi)
n protrusion, (60g+, fatal u notch, ((
b)) kekyatsufu''. In addition, in each figure, the same symbol - backward direction - also corresponds to busy 1 +! 6 minutes. Agent Masuo Oiwa Figure 1 Figure 52 *; 3 +z+ Figure 71, Figure Fig. 5 (Fig. 3 Fig. 7 Fig. 8 Fig. 10 Fig. 11 Fig. 12 “Dingshi---

Claims (1)

[Scope of Claims] (1) A cylindrical conductive metal fitting into which a carbon brush is inserted, a main body made of an insulating material with a square cross section that covers the outer periphery of the conductive metal fitting, and one end side of the conductive metal fitting that is fitted into the main body. ? 1. A brush holding device for a commutator motor, comprising: a cap made of a permanent material and having a rectangular cross section; the cap and the main body are mounted on a frame of a commutator motor. (2) A fly-shaped conductive metal fitting into which a carbon brush is inserted, a main body made of an insulating material with a square cross section that covers the entire outer periphery of the conductive metal fitting, and this main body K a cap made of insulating material in the shape of an outer surface VCd of both the camp and the body;
protrusion? At the same time, the frame of the commutator motor is provided with a fitting part 1D4 facing the protrusion, and the protrusion is fully fitted into this fitting part, and the gap and the main body are all fitted into the frame. Features a commutator motor brush holding device. (3) The commutator motor according to claim 2, wherein the fitting portion is an insertion hole for a screw of a tightener 1 that is coupled to the stator frame housed in the frame body. Brush holding device. (4) The second aspect of the present invention is characterized in that the above-mentioned protrusion is formed of a first protrusion and a second protrusion that are provided at the joint portion of both the cap and the main body and are opposed to each other by π. Commutator electric motor (L brush 1 gap 4-ν1 line. 61 A cylindrical conductive metal fitting into which a carbon brush is inserted, a main body made of an insulating material with a square cross section that covers the outer periphery of this conductive metal fitting, this Fitted into the main body, one end side of the above-mentioned conductive Mj metal fitting is fitted with a cap made of an insulating material with a rectangular cross section (4+N),
One end of the conductive metal fitting protrudes from the main body, and the cap is fitted into this protrusion, and the cap, the main body, and the entire commutator 1b are fitted. Brush holding device u0 (61) for a commutator motor characterized by being attached to the frame of the motor (a cylindrical conductive metal fitting into which a carbon brush is inserted; a main body made of an insulating material with a square cross section that covers the outer periphery of this conductive metal fitting) , a cap made of an insulating material having a rectangular cross section which is combined with the main body KIjM and covers one end of the conductive metal fitting;
One end of the conductive metal fitting protrudes from the main body, and this protrusion El-j has a first notch. In addition, the cap is provided with a second notch opposite to the first notch, and a terminal for power supply to the vertical flange is provided. 7. A brush holding device for a commutator motor, which is inserted into the cap through the first notch and the second notch. (7) A cylindrical conductive metal fitting into which a carbon brush is inserted and twisted.
A main body made of an insulating material with a rectangular cross section around the outer circumference of the conductive metal fitting, a cathode made of an insulating material with a rectangular cross section around one end of the metal fitting; A bearing case is provided on the frame of the commutator motor and supports the rotor of the commutator motor, and a plurality of lips are provided on the frame and support the bearing case, and between the plurality of ribs is provided A brush holding device for a commutator motor, characterized in that the cap and the main body are fitted together (4').