TWI555308B - Carbon brush group - Google Patents

Description

Carbon brush set

The invention relates to carbon brushes; in particular to a carbon brush set.

In an electromechanical device having a rotating member such as a motor, a combination of a carbon brush and a slip ring is commonly used, whereby current or a message can be continuously transmitted while the rotating member is rotated at a high speed without being interrupted by the rotation. 1 shows an example of a carbon brush set 100 in a conventional electromechanical device, which mainly includes a casing 1, a fixed rod 2 and a plurality of carbon brush holders 3; the carbon brush set 100 is matched with a current collection in the electromechanical device. The ring 9 is used, and the slip ring 9 is disposed on a rotating member (not shown) as described above and rotates with the rotating member; the fixing rod 2 is fixed to the casing 1 and the current collecting The ring 9 is parallel, and the carbon brush holders 3 are disposed in parallel on the fixing rod 2; the carbon brush holders 3 each have a constant hole 3a, two arms 3b and a carbon brush 3c, wherein the through hole 3a is fixed. The rods 2 are passed through, and the two carbon brushes 3c are respectively disposed on the arm 3b, and the two carbon brushes 3c of the carbon brush holders 3 are in contact with the slip ring 9.

The cross-sectional shape of the through hole 3a and the fixing rod 2 of each of the carbon brush holders 3 are generally circular as seen in FIG. 1, and such a structural relationship has several major disadvantages. First, the carbon brushes are The frame 3 needs to be adjusted one by one after being fixed to the fixing rod 2, so that the two carbon brushes 3c of the carbon brush holders 3 can be properly contacted to the current collecting ring 9, which is not convenient to install; secondly, even The angles of the carbon brush holders 3 are all adjusted. If the fixing rod 2 is rotated relative to the casing 1 due to an external force, the carbon brush holders 3 are all offset together, so that the carbon brush holders 3 are The carbon brush 3c cannot be maintained simultaneously with the collector ring 9 The contact state; finally, since the collector ring 9 is rotated at a high speed during the operation of the electromechanical device, it is easy to cause the carbon brush holders 3 to be deflected (as is apparent from Fig. 1, the angles of the carbon brush holders 3 are mutually skewed. ), it is disadvantageous to ensure stable contact between the two carbon brushes 3c of the carbon brush holders 3 and the slip ring 9.

In view of the above, an object of the present invention is to provide a carbon brush set without deliberately adjusting the applicable angle of the carbon brush holder and avoiding the offset of the angle.

In order to achieve the above object, the carbon brush set provided by the present invention comprises a frame body, a support structure and a carbon brush holder; wherein the support structure comprises a mandrel and a sleeve, wherein the mandrel is worn in a non-rotatable manner The sleeve is disposed, and the two ends of the mandrel protrude from the two ends of the sleeve and are fixed on the frame; the carbon brush holder is disposed on the sleeve of the support structure and cannot be opposite to the sleeve Turn.

Thereby, the mandrel and the sleeve are not rotatable relative to each other, and the carbon brush holder is also unable to rotate relative to the sleeve, and the two ends of the mandrel are fixed on the frame body, thereby ensuring the angle of the carbon brush holder is matched. Pre-designed and not offset by the high speed rotation of the collector ring.

100‧‧‧carbon brush set

1‧‧‧Shell

2‧‧‧Fixed rod

3‧‧‧Carbon holder

3a‧‧‧Tongkong

3b‧‧‧ Arm

3c‧‧‧carbon brush

200‧‧‧carbon brush set

10‧‧‧ ‧ body

12‧‧‧ side panels

122‧‧‧bond hole

124‧‧‧ counterbore

14‧‧‧ Nuts

20‧‧‧Support structure

22‧‧‧ mandrel

221‧‧‧ Body

222‧‧‧Combined section

224‧‧ Thread segment

24‧‧‧ casing

242‧‧‧through hole

244‧‧‧Non-circular pipe sections

246‧‧‧faced

30‧‧‧Carbon holder

32‧‧‧Tongkong

50‧‧‧ short tube

52‧‧‧Combination Department

52a‧‧‧ convex

54‧‧‧Combined Department

54a‧‧‧ recess

9, 99‧‧ ‧ collector ring

1 is a perspective view of a conventional carbon brush set, illustrating a case where the angles of the carbon brush holders are different; FIG. 2 is a perspective view of a preferred embodiment of the present invention; FIG. 3 is a partial perspective exploded view of the preferred embodiment of FIG. Figure, revealing the coupling relationship between the mandrel and the sleeve; 4 is a partial cross-sectional view of the preferred embodiment of FIG. 2, showing that one end of the mandrel protrudes from the outside of the sleeve and is fixed to the side plate of the frame; FIG. 5 is a partial cross-sectional view of another preferred embodiment, exposing the mandrel and the frame FIG. 6 is a partial perspective view of the preferred embodiment of FIG. 2, showing a combination of the carbon brush holder and the support structure; FIG. 7 is a partial perspective view of another preferred embodiment, revealing the sleeve It can be made up of a plurality of short tubes.

The present invention will be described in more detail with reference to the accompanying drawings. FIG. 2 shows a carbon brush set 200 according to a first preferred embodiment of the present invention. The carbon brush set 100 is the same as that of a collector ring 99. The carbon brush set 200 includes a frame body 10, a support structure 20, and a plurality of carbon brush holders 30. The frame body 10 has two side plates 12, and the support structure 20 includes a mandrel 22 and a sleeve 24, the mandrel 22 is disposed through the sleeve 24, and the two ends of the mandrel 22 respectively protrude from the two ends of the sleeve 24, and are respectively fixed to the side plate 12, the carbon brush holders 30 are disposed on the sleeve 24 of the support structure 20; for convenience of explanation, only the mandrel 22 and one end of the sleeve 24 are disclosed in FIG. 2, and the frame body 10 is One of the side panels 12, there is also a symmetrical component structure outside the imaginary line of FIG. 2 (ie, the mandrel 22 and the other end of the sleeve 24, and the other side panel 12 of the frame 10), First described.

Referring to FIG. 3, the body portion 221 of the mandrel 22 has a hexagonal cross section. The sleeve 24 has a through hole 242 for the body portion 221 of the mandrel 22 to pass through, and the hole shape of the through hole 242 is opposite to the body. The cross-section of the portion 221 is also hexagonal, so the mandrel 22 and the sleeve 24 cannot rotate relative to each other. Of course, in other embodiments, the cross section of the body of the mandrel 22 and the phase of the through hole 242 The matching hole shape may also be a shape design other than a hexagonal shape, such as an elliptical shape, a square shape, or even an irregular shape such as an irregular shape, as long as the effect that the mandrel 22 cannot rotate relative to the sleeve 24 can be caused.

Each of the side plates 12 is provided with a coupling hole 122. The mandrel 22 has two coupling sections 222 on opposite sides, and each of the coupling sections 222 has a threaded section 224. Referring to FIG. 4, the core 22 is The end passes through a coupling hole 122 of the side plate 12 (only one end is shown in the figure), wherein each of the coupling segments 222 is defined as the mandrel 22 passes through each of the coupling holes 122, and each of the coupling segments 222 The cross-sectional shape of each of the coupling holes 122 is matched with each of the coupling segments 222, whereby the mandrel 22 cannot be rotated relative to the two side plates 12; in the first preferred embodiment, The two joint sections 222 are hexagonal to the section of the body of the mandrel 22, but are not limited thereto.

The two threaded segments 224 at the two ends of the mandrel 22 protrude from the side plate 12, and the frame body 10 further includes two nuts 14 respectively screwed into the threaded segments 224, and the nuts 224 are respectively pressed against On one of the side panels 12, the bond between the mandrel 22 and the side panel 12 is more secure.

Referring to FIG. 5, in the second preferred embodiment of the present invention, the two ends of the sleeve 24 respectively have a non-circular pipe section 244 (only one end is shown), and each of the side plates 12 further includes a counterbore 124. The counterbore 124 is centrally provided with the coupling hole 122, and the counterbore 124 is embedded by the non-circular pipe section 244 of the sleeve 24, and the hole shape of the counterbore 124 is matched with the non-circular pipe section 244; thereby, the side plate In addition to providing a stronger supporting force for the support structure 20, the relative rotation of the sleeve 24 and each of the side plates 12 can be additionally limited. It should be noted that the actual shape of the non-circular pipe section 244 and the hole shape of the counterbore 124 is not limited by the present invention, and details are not described herein.

Referring to FIG. 6 , a carbon brush holder 30 is taken as an example to illustrate the bonding relationship between the carbon brush holder 30 and the sleeve 24 , wherein the outer wall of the sleeve 24 . Having all face 246 (in other words, the outer wall of the sleeve 24 has all sides), the carbon brush holder 30 includes a consistent hole 32 having a hole shape that matches the cross-sectional shape of the outer wall of the sleeve 24, For the sleeve 24 to pass through, the carbon brush holder 30 is thus unable to rotate relative to the sleeve 24; of course, the shape of the hole of the through hole 32 and the sectional shape of the outer wall of the sleeve 24 as seen in FIG. 6 are not the same as the present invention. The limit is where.

Referring to FIG. 7, in order to enable the carbon brush set 200 of the present invention to be applied to more types of electromechanical devices, the sleeve 24 can be formed by a plurality of short tubes 50, and the corresponding ones of the short tubes 50 are respectively The side has a joint portion 52 and a joint portion 54. In the preferred embodiment, the joint portion 52 has a convex portion 52a, and the joint portion 54 has a recess portion 54a, and the joint of the short tube 50 The convex portion 52a of the portion 52 and the concave portion 54a of the joined portion 54 of the other short tube 50 are shaped to match each other, so that the short tube 50 can be combined with the other of the short tubes 50 by the joint portion 52 thereof. The portions 54 are joined, thereby joining the short tubes 50 to the sleeve 24.

In summary, the components of the carbon brush set 200 of the present invention have a specific form-fitting relationship, so that the mandrel 22 cannot rotate relative to the two side plates 12 of the frame body 10, and the sleeve 24 cannot be opposite to the core. The shaft 22 is rotated, and the carbon brush holders 30 are unable to rotate relative to the sleeve 24, whereby the support structure 20 is fixed to the frame body 10, and it can be confirmed that each of the subsequently mounted carbon brush holders 30 is maintained in advance. The angle of design is not offset by the high speed rotation of the slip ring 99.

The above is only a preferred embodiment of the present invention, and equivalent structural changes to the scope of the present invention and the scope of the claims are intended to be included in the scope of the present invention.

200‧‧‧carbon brush set

10‧‧‧ ‧ body

12‧‧‧ side panels

14‧‧‧ Nuts

20‧‧‧Support structure

22‧‧‧ mandrel

24‧‧‧ casing

30‧‧‧Carbon holder

32‧‧‧Tongkong

99‧‧‧Collection ring

Claims (7)

A carbon brush set comprising: a frame body; a support structure comprising a mandrel and a sleeve, wherein the mandrel is threaded through the sleeve in a non-rotatable manner, and the two ends of the mandrel respectively protrude from the sleeve The two ends of the tube are fixed to the frame body; and a carbon brush holder is disposed on the sleeve of the support structure and cannot rotate relative to the sleeve; wherein the cross section of the core shaft is not round The sleeve has a through hole for the mandrel body to pass through, and the hole shape of the through hole cooperates with a non-circular cross section of the body. The carbon brush set of claim 1, wherein the mandrel has two joint sections on opposite sides, the cross section of the two joint sections is not circular; the frame body comprises two side plates, and the two side plates are respectively disposed And a coupling hole having a hole shape and a matching shape of the core shaft and the coupling portion, and each of the coupling segments of the mandrel respectively passes through a coupling hole of the side plate. The carbon brush set of claim 2, wherein the two ends of the sleeve of the support structure respectively have a non-circular pipe section; each side plate of the frame body further comprises a counterbore, and the joint hole is disposed at the center of the counterbore. The counterbore is embedded by the non-circular pipe section of one of the sleeves, and the hole shape of the counterbore cooperates with the non-circular pipe section. The carbon brush set of claim 2, wherein the outer side of the two coupling sections of the mandrel further has a threaded section; the frame body further comprises a second nut, respectively screwing a threaded section, and each of the screws The caps are respectively pressed against one of the side plates. The carbon brush set according to claim 1, wherein the outer wall of the sleeve is not circular; the carbon brush holder further comprises a hole having a hole shape and a cross-sectional shape of the outer wall of the sleeve. The casing passes through. The carbon brush set according to claim 1, wherein the sleeve is formed by a plurality of short tubes, and the corresponding two sides of each of the short tubes respectively have a joint portion and a joint portion; The joint is combined with the joined portion of the other of the short tubes. The carbon brush set according to claim 6, wherein the joint portion of each of the short tubes has a convex portion, the joined portion has a concave portion; and the convex portion of the joint portion of the short tube and the other short tube The shape of the recess of the joined portion cooperates with each other.