CN113991379B - Groove-shaped reverser - Google Patents
Groove-shaped reverser Download PDFInfo
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- CN113991379B CN113991379B CN202111225374.XA CN202111225374A CN113991379B CN 113991379 B CN113991379 B CN 113991379B CN 202111225374 A CN202111225374 A CN 202111225374A CN 113991379 B CN113991379 B CN 113991379B
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- Prior art keywords
- reversing
- fastening
- outer sides
- sheets
- commutator
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- 239000004033 plastic Substances 0.000 claims abstract description 54
- 229920003023 plastic Polymers 0.000 claims abstract description 54
- 230000007246 mechanism Effects 0.000 claims abstract description 44
- 239000010445 mica Substances 0.000 claims abstract description 36
- 229910052618 mica group Inorganic materials 0.000 claims abstract description 36
- 239000002184 metal Substances 0.000 claims abstract description 12
- 229910052751 metal Inorganic materials 0.000 claims abstract description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 20
- 229910052802 copper Inorganic materials 0.000 claims description 20
- 239000010949 copper Substances 0.000 claims description 20
- 230000003014 reinforcing effect Effects 0.000 claims description 14
- 239000003365 glass fiber Substances 0.000 claims description 12
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 7
- NEIHULKJZQTQKJ-UHFFFAOYSA-N [Cu].[Ag] Chemical compound [Cu].[Ag] NEIHULKJZQTQKJ-UHFFFAOYSA-N 0.000 claims description 5
- PLZFHNWCKKPCMI-UHFFFAOYSA-N cadmium copper Chemical compound [Cu].[Cd] PLZFHNWCKKPCMI-UHFFFAOYSA-N 0.000 claims description 5
- 238000007731 hot pressing Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 13
- 230000008569 process Effects 0.000 abstract description 12
- 230000000694 effects Effects 0.000 description 10
- 230000009471 action Effects 0.000 description 6
- 238000003825 pressing Methods 0.000 description 6
- 230000001133 acceleration Effects 0.000 description 5
- 230000007774 longterm Effects 0.000 description 5
- 230000009191 jumping Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 3
- 238000004080 punching Methods 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010622 cold drawing Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011417 postcuring Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/02—Details for dynamo electric machines
- H01R39/04—Commutators
Landscapes
- Motor Or Generator Current Collectors (AREA)
Abstract
The invention discloses a groove-type commutator, which comprises a metal bushing, wherein a plastic shell is sleeved outside the metal bushing, a reversing mechanism is sleeved outside the plastic shell, the reversing mechanism comprises a plurality of groups of reversing pieces, mica sheets are arranged between adjacent reversing pieces, a limiting strip is fixedly connected to the outer side of each reversing piece, the outer side of each limiting strip is tightly attached to the outer side of the corresponding mica sheet, and one side of each mica sheet far away from the corresponding limiting strip is tightly attached to the inner wall of the plastic shell. The groove-type commutator can effectively solve the problems that in the prior art, the overspeed test strength of the commutator can only meet the basic requirement of products and cannot be further improved, the weight of the contact joint of the commutator segments is concentrated, the rotation radius is large, the centrifugal force is large, the inter-segment step of the commutator segments is faster to promote in the process of continuously improving the rotating speed, the skip and throwing phenomena are easy to occur, and the commutator is damaged.
Description
Technical Field
The invention relates to the technical field of commutators, in particular to a groove-type commutator.
Background
The commutator is a component of a direct-current permanent-magnet series motor and a single-phase series motor for continuously rotating the motor, when the coils pass through current, the coils rotate under the action of magnetic fields through attraction and repulsion force, when the coils rotate to be balanced with the magnets, the contact pieces on the commutator corresponding to the coils which are originally electrified are separated from the electric brushes, and the electric brushes are connected to the contact pieces corresponding to the coils which are consistent with the group of coils which generate the driving force, so that the coils are repeatedly rotated continuously, and the direct-current motor is rotated.
The overall forming of the groove-shaped commutator adopts a hot-pressing process, firstly, punched and formed commutator segments and mica sheets are arranged into a cylinder shape, a sizing die is sleeved, then the cylinder-shaped commutator segments and mica sheets are pressed into a pressing die, and weighed plastic is put into the pressing die; if the common phenolic glass fiber plastic is used, the upper die is closed and put on a hot press for pressing, plastic is implanted to keep the stability of the commutator, due to limited binding force, the phenomena of skip and throwing of the commutator are easy to occur during high-speed operation, the overspeed test strength of the commutator can only meet the basic requirements of products and cannot be further improved, the parts of the commutator are concentrated in weight and large in rotation radius at the contact joints of the commutator segments, so that the centrifugal force is large, the inter-segment difference of the commutator segments is faster to lift in the process of continuously improving the rotating speed, the skip and throwing phenomena are easy to occur, the commutator is damaged, meanwhile, the mica sheets are limited by the pulling force of the plastic, and under the combined action of the centrifugal force and the vibrating force, the wear-resistant mica sheets are easy to float during long-term operation, so that the wear-resistant mica sheets are protruded out of the commutator segments, the contact between brushes and the commutator segments is affected, the commutator is deteriorated, and the motor cannot operate.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects existing in the prior art, the invention provides the groove-type commutator, which can effectively solve the problems that in the prior art, the overspeed test strength of the commutator can only meet the basic requirement of products and cannot be further improved, the weight of the part is concentrated and the rotation radius is large at the contact joint of the commutator segments, so that the centrifugal force is large, the inter-segment step of the commutator segments is faster to be lifted in the process of continuously improving the rotating speed, and the commutator is easily damaged due to the phenomena of skip and throwing.
Technical proposal
In order to achieve the above purpose, the invention is realized by the following technical scheme:
the invention provides a groove-type commutator, which comprises a metal bushing, wherein a plastic shell is sleeved outside the metal bushing, and a reversing mechanism is sleeved outside the plastic shell;
the reversing mechanism comprises a plurality of groups of reversing sheets, a plurality of mica sheets are arranged between adjacent reversing sheets, limiting strips are fixedly connected to the outer sides of the reversing sheets, the outer sides of the limiting strips are tightly attached to the outer sides of the mica sheets, one sides of the mica sheets, which are far away from the limiting strips, are tightly attached to the inner wall of the plastic shell, a plurality of reversing sheets are internally provided with fastening mechanisms, the fastening mechanisms are arranged in two, and the fastening mechanisms are uniformly arranged inside the reversing sheets, and the outer sides of the fastening mechanisms are tightly attached to the outer sides of the mica sheets.
Further, the plastic shell and the fastening mechanism are formed by integrating phenolic glass fiber plastic through hot pressing, and the plastic shell consists of a bearing plate, an external shell and an internal shell.
Further, the two receiving plates and the two external shells are respectively arranged, the receiving plates and the two external shells are uniformly arranged on two sides of the internal shell, the outer sides of the receiving plates are tightly attached to the outer sides of the reversing pieces, the outer sides of the external shells are tightly clamped with the outer sides of the reversing pieces, and the inner sides of the internal shell are tightly attached to the outer sides of the metal bushings.
Further, a plurality of the reversing pieces are made of silver copper or cadmium copper, each reversing piece is composed of a contact piece, a trapezoidal copper bar and a dovetail piece, the outer sides of the contact pieces are attached to an external electric brush, the outer sides of the trapezoidal copper bars are tightly attached to the outer sides of mica plates, and the outer sides of the dovetail pieces are tightly clamped with an external shell.
Further, the fastening holes are formed in the trapezoid copper bars, two fastening holes are formed in the fastening holes, the fastening holes are uniformly formed in the trapezoid copper bars, the dovetail sheet is of a trapezoid design, and a plurality of groups of reinforcing grooves are formed in the dovetail sheet.
Further, the fastening hole is a reducing arc hole, the large caliber direction of the reducing arc hole is consistent with the rotation direction of the reversing sheet, and a plurality of groups of anti-skid grooves are formed in the inner wall of the reducing arc hole.
Further, the fastening mechanism comprises a fastening rod, the fastening rod is positioned in the fastening hole, the fastening rod is tightly attached to the inner wall of the anti-slip groove through a plurality of groups of anti-slip sheets arranged on the outer side of the fastening rod, and the installation directions of the angles of the outer sides of the anti-slip sheets and the fastening rod are consistent with the large caliber direction of the reducing arc hole.
Further, the fastening rod is a reducing arc rod, one end with a large diameter of the reducing arc rod is consistent with the rotation direction of the reversing piece, the outer side of the reducing arc rod is matched with the inner side of the reducing arc hole, and the outer side of the fastening rod is fixedly connected with a locking block.
Further, the anti-loose block is of arc-side rectangular block design, and one side, close to the limiting strip, of the anti-loose block is tightly attached to the outer side of the mica sheet.
Advantageous effects
Compared with the known public technology, the technical scheme provided by the invention has the following beneficial effects:
(1) According to the invention, the reversing piece is formed by punching the copper bar, the copper bar is formed by drawing a bar stock, the one-to-one property of the size of the trapezoid bar is ensured, the hardness of silver copper or cadmium copper is improved, the shape design of the dovetail piece is designed, in order to prevent the novel groove type reverser from being pulled out by centrifugal force during high-speed operation, meanwhile, two sides of the dovetail piece are punched to form a plurality of groups of reinforcing grooves, when phenolic glass fiber plastic is implanted and clamped on a hot press for pressing, phenolic glass fiber plastic flows into the outer side of the dovetail piece and the inside of the reinforcing grooves, the solidified phenolic glass fiber plastic forms an integral plastic shell, materials and a plurality of groups of reinforcing grooves are tightly fixed together after flowing into the reinforcing grooves in the plastic shell, so that the tensile strength between the dovetail piece and the plastic shell is greatly improved, meanwhile, the dovetail piece is in a trapezoid design, the two sides of the dovetail piece are subjected to the extrusion stress of the plastic shell in the high-speed rotation process of the dovetail piece, the tensile strength between the dovetail piece and the plastic shell is greatly improved, and the problem of jumping-out of the dovetail piece during long-time high-speed rotation of the reversing piece is prevented.
(2) The integral fastening mechanism comprises the fastening rod, the anti-slip sheet and the locking block, the fastening hole formed in the reversing sheet is a variable-diameter arc hole, the large-caliber direction of the variable-diameter arc hole is consistent with the rotation direction of the reversing sheet, the inner wall of the variable-diameter arc hole is provided with a plurality of groups of anti-slip grooves, the fastening rod is positioned in the fastening hole, the installation directions of the angles of the outer sides of the anti-slip sheet and the fastening rod are consistent with the large-caliber direction of the variable-diameter arc hole, the integral fastening mechanism is designed to be respectively positioned at the upper side and the lower side of the reversing sheet, the fastening mechanism has a fixing effect on a plurality of groups of reversing sheets, the dispersed reversing sheets are integrally formed, the phenomenon that the weight concentration and the rotation radius of the contact joints of the reversing sheets are large, the centrifugal force is large is avoided, the inter-sheet step difference of the reversing sheets is increased rapidly in the process of continuously increasing the rotation speed, the phenomenon of jumping and the throwing sheets occurs, and the strength and the upper limit of the rotation speed of the novel groove type reversing sheet are further improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is evident that the drawings in the following description are only some embodiments of the present invention and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
FIG. 1 is a schematic view of a three-dimensional structure of the present invention;
FIG. 2 is a schematic view of a three-dimensional layered structure of the present invention;
FIG. 3 is a schematic view of a three-dimensional partial cross-section of the present invention;
fig. 4 is a schematic view of a three-dimensional structure of a commutator segment according to the present invention;
FIG. 5 is a schematic view of a front view of a segment according to the present invention;
fig. 6 is a schematic structural view of a combination of a commutator segment and a fastening mechanism according to the present invention.
Reference numerals in the drawings represent respectively: 1. a metal bushing; 2. a plastic housing; 3. a reversing mechanism; 31. a reversing sheet; 311. a contact blade; 312. trapezoidal copper bars; 313. dovetail pieces; 314. a fastening hole; 315. a reinforcing groove; 316. an anti-skid groove; 32. mica sheets; 33. a fastening mechanism; 331. a fastening rod; 332. a non-slip sheet; 333. a locking block; 34. and a limit strip.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention is further described below with reference to examples.
Examples:
referring to fig. 1-6, the present invention provides a technical solution: a groove-type commutator comprises a metal bushing 1, wherein a plastic shell 2 is sleeved outside the metal bushing 1, and a reversing mechanism 3 is sleeved outside the plastic shell 2;
the reversing mechanism 3 comprises a plurality of groups of reversing sheets 31, mica sheets 32 are arranged between adjacent reversing sheets 31, limiting strips 34 are fixedly connected to the outer sides of the reversing sheets 31, the outer sides of the limiting strips 34 are tightly attached to the outer sides of the mica sheets 32, one sides of the mica sheets 32, which are far away from the limiting strips 34, are tightly attached to the inner wall of the plastic shell 2, the limiting strips 34 play a role in fixing the side sides of the mica sheets 32, fastening mechanisms 33 are arranged inside the reversing sheets 31, the fastening mechanisms 33 are arranged in two, the fastening mechanisms 33 are uniformly arranged inside the reversing sheets 31, the plurality of groups of reversing sheets 31 play a role in fixing, the plurality of groups of dispersed reversing sheets 31 form a whole, the phenomenon that the contact joints of the reversing sheets 31 are concentrated in weight and large in rotation radius is avoided, centrifugal force is large, in the process of continuously improving rotation speed, the inter-sheet step difference of the reversing sheets 31 is fast, the phenomenon of jumping and throwing the mica sheets occurs, the strength and the upper limit of the novel groove type reverser are further improved, and the outer sides of the fastening mechanisms 33 are tightly attached to the outer sides of the reversing sheets 32.
The plastic shell 2 and the fastening mechanism 33 are formed integrally by phenolic glass fiber plastic through hot pressing, so that the overall strength of the plastic shell 2 and the fastening mechanism 33 is improved, and the plastic shell 2 consists of a bearing plate, an external shell and an internal shell.
The two bearing plates and the two external shells are respectively arranged, the bearing plates and the two external shells are uniformly arranged on two sides of the internal shell, the outer sides of the bearing plates are tightly attached to the outer sides of the reversing pieces 31, the outer sides of the external shells are tightly clamped with the outer sides of the reversing pieces 31, and the inner sides of the internal shells are tightly attached to the outer sides of the metal bushings 1.
The commutator segment 31 is made of silver copper or cadmium copper, the commutator segment 31 is composed of a contact blade 311, a trapezoidal copper bar 312 and a dovetail piece 313, the outer side of the contact blade 311 is attached to an external electric brush, the outer side of the trapezoidal copper bar 312 is tightly attached to the outer side of a mica plate 32, the outer side of the dovetail piece 313 is tightly clamped with an external shell, and the dovetail piece 313 is designed to be in a shape so as to prevent the commutator segment 31 from being pulled out by centrifugal force when the novel groove-type commutator runs at high speed.
The fastening holes 314 are formed in the trapezoid copper bar 312, two fastening holes 314 are formed in the trapezoid copper bar 312, the fastening holes 314 are uniformly formed in the trapezoid copper bar 312, the dovetail piece 313 is of a trapezoid design, in the high-speed rotation process of the dovetail piece 313, the dovetail piece 313 is subjected to the tensile force of an external shell in the plastic shell 2, meanwhile, the two sides of the trapezoid dovetail piece 313 are subjected to the extrusion stress of the plastic shell 2, the two sides are combined, the tensile strength between the dovetail piece 313 and the plastic shell 2 is greatly improved, a plurality of groups of reinforcing grooves 315 are formed in the dovetail piece 313, the solidified phenolic glass fiber plastics form the integrated plastic shell 2, and materials and the groups of reinforcing grooves 315 are tightly fixed together after the materials flow into the reinforcing grooves 315 in the plastic shell 2, so that the tensile strength between the dovetail piece 313 and the plastic shell 2 is greatly improved.
The fastening hole 314 is a variable-diameter arc hole, the large-caliber direction of the variable-diameter arc hole is consistent with the rotation direction of the reversing sheet 31, and a plurality of groups of anti-slip grooves 316 are formed in the inner wall of the variable-diameter arc hole.
The fastening mechanism 33 comprises a fastening rod 331, the fastening rod 331 is located inside the fastening hole 314, the fastening rod 331 is tightly attached to the inner wall of the anti-slip groove 316 through a plurality of groups of anti-slip sheets 332 arranged on the outer side of the fastening rod 331, the installation direction of the outer side angles of the anti-slip sheets 332 and the fastening rod 331 is consistent with the large caliber direction of the variable-diameter arc-shaped hole, the anti-slip sheets 332 are pressed to be elastically deformed and folded inwards, the fastening rod 331 is convenient to slightly slide relative to the fastening hole 314, the pressed anti-slip sheets 332 are restored under the elastic action, and the anti-slip sheets 332 are blocked with the side of the fastening hole 314 and the anti-slip groove 316 to prevent the fastening rod 331 from rebounding, so that the fastening mechanism 33 is kept to stably fix the reversing sheet 31.
The fastening rod 331 is the reducing arc pole, and the one end that reducing arc pole diameter is big is unanimous with the commutator segment 31 rotation direction, reducing arc pole outside and reducing arc downthehole side looks adaptation, fastening rod 331 outside fixedly connected with lockblock 333, lockblock 333 self inertia, at the continuous acceleration rate in-process of fastening rod 331, drive lockblock 333 constantly acceleration rate, lockblock 333 plays the acceleration rate effect of accelerating fastening rod 331, and the lockblock 333 outside plays closely fixed effect to mica sheet 32 simultaneously.
The locking block 333 is designed as an arc side rectangular block, and one side of the locking block 333 close to the limiting strip 34 is tightly attached to the outer side of the mica sheet 32, so that the contact area between the locking block 333 and the mica sheet 32 is increased.
Referring to fig. 1-6, after the positive and negative poles of the brush direct current motor on the electric drill are connected with the power supply, the magnetic poles and carbon brushes in the direct current motor are fixed, the coil and the commutator rotate, and the rotating direction of the commutator is always unchanged, in long-term high-speed rotation operation, the contact connection part of the commutator segment has concentrated weight and large rotating radius, so that the centrifugal force is large, the phenomena of skip, throwing and the like are easy to occur, the novel groove-type commutator is designed for solving the phenomena of skip, throwing and the like, and is used for improving the rotating speed upper limit of the groove-type commutator, after the coil passes through the current, the commutator rotates under the action of the magnetic field through attraction and repulsion force, the rotating speed of the commutator is continuously improved, the centrifugal force born by the commutator segment 31 in the commutator mechanism 3 is continuously increased, the commutator segment 31 has the tendency of outwards throwing, the commutator segment 31 is composed of a contact segment 311, a trapezoid copper bar 312 and a dovetail segment 313, the commutator segment 31 is formed by punching and breaking the copper bar, the copper bar is formed by drawing a bar stock, the uniqueness of the trapezoid bar size is ensured by cold drawing, the hardness of silver copper or cadmium copper is improved, the shape design of the dovetail segment 313 is designed to prevent the commutator segment 31 from being pulled out by centrifugal force when the novel groove-type commutator operates at high speed, a plurality of groups of reinforcing grooves 315 are punched on two sides of the dovetail segment 313, when the phenolic glass fiber plastic is implanted and clamped on a hot press for pressing, the phenolic glass fiber plastic flows into the outer side of the dovetail segment 313 and the inside of the reinforcing groove 315, the solidified phenolic glass fiber plastic forms an integrated plastic shell 2, the materials flowing into the reinforcing groove 315 in the plastic shell 2 are tightly fixed with the reinforcing grooves 315, the tensile strength between the dovetail segment 313 and the plastic shell 2 is greatly improved, meanwhile, the dovetail pieces 313 are of trapezoid design, in the high-speed rotation process of the dovetail pieces 313, the dovetail pieces 313 are subjected to the tensile force of an external shell in the plastic shell 2, meanwhile, the two sides of the trapezoid dovetail pieces 313 are subjected to the extrusion stress of the plastic shell 2, and the trapezoid dovetail pieces 313 and the plastic shell 2 are combined to act together, so that the tensile strength between the dovetail pieces 313 and the plastic shell 2 is greatly improved, the problems of jumping, throwing and the like in the long-term high-speed rotation process of the reversing pieces 31 are prevented, and under the premise that the conditions of gaps, the number, the size and the like of the reversing pieces 31 are unchanged, in order to improve the rotating speed of the groove-type reverser, the fastening mechanism 33 is designed, and the tightening mechanism is sleeved with a sizing die and then pressed into a pressing die, so that the plastic with excessive weight is put in; for example, the common phenolic glass fiber plastic is put on an upper die and is pressed on a hot press, the hot pressing temperature is 150-170 ℃, the pressure is about 300 x10 Pa (about 300 kgf/cm), the forming is carried out in 5-15 minutes, then the post curing treatment is carried out for 5 hours at 130 ℃ to form an integrated fastening mechanism 33, the fastening mechanism 33 consists of a fastening rod 331, a non-slip sheet 332 and a locking block 333, the fastening hole 314 formed on the reversing sheet 31 is a variable-diameter arc hole, the large caliber direction of the variable-diameter arc hole is consistent with the rotation direction of the reversing sheet 31, a plurality of groups of non-slip grooves 316 are formed on the inner wall of the variable-diameter arc hole, the fastening rod 331 is positioned in the fastening hole 314, the installation directions of the angles of the outer sides of the non-slip sheet 332 and the fastening rod 331 are consistent with the large caliber direction of the variable-diameter arc hole, the integrally formed fastening mechanism 33 is designed with two groups of the upper side and the lower side of the reversing sheet 31 respectively, the fixing effect is achieved on the plurality of groups of reversing sheets 31, A plurality of groups of scattered reversing pieces 31 are formed into a whole, the phenomenon that the weight of the contact joints of the reversing pieces 31 is concentrated, the rotation radius is large, the centrifugal force is large, the inter-piece step difference of the reversing pieces 31 is lifted faster in the process of continuously improving the rotating speed, the phenomenon of jumping, throwing and the like occurs, the strength and the upper limit of the rotating speed of the novel groove type reverser are further improved, in the process of continuously accelerating the novel groove type reverser, the fastening holes 314 in the reversing pieces 31 drive the fastening rods 331 to continuously accelerate through the friction force between the anti-slip grooves 316 and the anti-slip pieces 332 arranged at the outer side angles of the fastening rods 331, the fastening rods 331 and the anti-slip pieces 332 further perform slight relative sliding with the fastening holes 314, the integration between the fastening mechanisms 33 and the reversing pieces 31 is further reinforced, the fastening of the fastening mechanisms 33 to the reversing pieces 31 is more and more tightly fixed through the repeated use of the reverser, the problem that the tightening mechanism 33 is not compact enough is avoided to long-term use reversing piece 31 to appear becoming flexible and earlier stage installation, the antiskid sheet 332 of tightening rod 331 outside angle installation, antiskid sheet 332 is pressed and is taken place elastic deformation, inwards fold, the relative fastening hole 314 of tightening rod 331 of being convenient for slightly slides, antiskid sheet 332 after being pressed resumes by elastic action, antiskid sheet 332 and fastening hole 314 avris and anti-skidding groove 316 mutual separation, prevent that tightening rod 331 from taking place to kick-back, keep tightening mechanism 33 to reversing piece 31's steady fixation, the inertia of locking piece 333 self, constantly increase speed in tightening rod 331, drive locking piece 333 constantly increase speed, locking piece 333 plays the acceleration rate effect of acceleration rate tightening rod 331, simultaneously locking piece 333 outside plays closely fixed effect to mica sheet 32, under centrifugal force and vibratory force's combined action, long-term work high-speed operation mica sheet 32 takes place the drunkenness easily, lead to wear-resistant mica sheet 32 protrusion in the reversing piece, thereby influence the brush and the contact of reversing piece 31, novel locking piece 333 effectively avoids the emergence of the circumstances, the reversing piece 31 is fixed to the side, further limit effect is carried out to the high-speed side of the novel mica sheet 32, the high-speed limit is further fixed to the novel mica sheet 32, the overall speed limit is increased, the high-speed limit effect is further, the novel high-speed limit mica sheet 32 is fixed, the overall speed limit is fixed to the side of the reversing piece 32, and the speed limit is greatly increased, the speed is greatly, the speed limit to the side is greatly increased, the effect, and the speed is greatly increased, and the speed.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; these modifications or substitutions do not depart from the essence of the corresponding technical solutions from the protection scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. A trough type commutator, characterized in that: the novel steering device comprises a metal bushing (1), wherein a plastic shell (2) is sleeved outside the metal bushing (1), and a reversing mechanism (3) is sleeved outside the plastic shell (2);
the reversing mechanism (3) comprises a plurality of groups of reversing sheets (31), a plurality of mica sheets (32) are arranged between adjacent reversing sheets (31), limiting strips (34) are fixedly connected to the outer sides of the reversing sheets (31), the outer sides of the limiting strips (34) are tightly attached to the outer sides of the mica sheets (32), one sides, far away from the limiting strips (34), of the mica sheets (32) are tightly attached to the inner wall of the plastic shell (2), fastening mechanisms (33) are arranged in the reversing sheets (31), two fastening mechanisms (33) are arranged, the fastening mechanisms (33) are uniformly arranged in the reversing sheets (31), and the outer sides of the fastening mechanisms (33) are tightly attached to the outer sides of the mica sheets (32);
the fastening mechanism (33) comprises a fastening rod (331), the fastening rod (331) is located inside the fastening hole (314), the fastening rod (331) is tightly attached to the inner wall of the anti-slip sheet (332) and the anti-slip groove (316) through a plurality of groups arranged on the outer side of the fastening rod (331), the installation direction of the outer side angles of the anti-slip sheet (332) and the fastening rod (331) is consistent with the large caliber direction of the reducing arc hole, the fastening rod (331) is a reducing arc rod, one end with the large diameter of the reducing arc rod is consistent with the rotation direction of the reversing sheet (31), the outer side of the reducing arc rod is matched with the inner side of the reducing arc hole, a locking block (333) is fixedly connected to the outer side of the fastening rod (331), the locking block (333) is designed in an arc side length square, and one side of the locking block (333) close to the limiting strip (34) is tightly attached to the outer side of the mica sheet (32).
2. A trough type commutator as defined in claim 1, in which: the plastic shell (2) and the fastening mechanism (33) are formed by integrating phenolic glass fiber plastics through hot pressing, and the plastic shell (2) consists of a bearing plate, an external shell and an internal shell.
3. A trough type commutator as defined in claim 2, in which: the bearing plates and the external shell are both provided with two, the bearing plates and the external shell are uniformly arranged on two sides of the internal shell, the outer sides of the bearing plates are tightly attached to the outer sides of the reversing pieces (31), the outer sides of the external shell are tightly clamped with the outer sides of the reversing pieces (31), and the inner sides of the internal shell are tightly attached to the outer sides of the metal bushings (1).
4. A trough type commutator as defined in claim 1, in which: the multiple reversing pieces (31) are made of silver copper or cadmium copper, each reversing piece (31) is composed of a contact piece (311), a trapezoidal copper bar (312) and a dovetail piece (313), the outer sides of the contact pieces (311) are attached to an external electric brush, the outer sides of the trapezoidal copper bars (312) are tightly attached to the outer sides of mica plates (32), and the outer sides of the dovetail pieces (313) are tightly clamped with an external shell.
5. A trough type commutator as defined in claim 4, wherein: the novel dovetail copper bar is characterized in that fastening holes (314) are formed in the trapezoid copper bar (312), two fastening holes (314) are formed, the fastening holes (314) are uniformly formed in the trapezoid copper bar (312), the dovetail piece (313) is of a trapezoid design, and a plurality of groups of reinforcing grooves (315) are formed in the dovetail piece (313).
6. A trough type commutator as defined in claim 5, wherein: the fastening hole (314) is a reducing arc hole, the large caliber direction of the reducing arc hole is consistent with the rotation direction of the reversing sheet (31), and the inner wall of the reducing arc hole is provided with a plurality of groups of anti-skid grooves (316).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111225374.XA CN113991379B (en) | 2021-10-21 | 2021-10-21 | Groove-shaped reverser |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203456704U (en) * | 2013-09-29 | 2014-02-26 | 湖州展瑞机电科技有限公司 | Super-strength commutator |
| CN205583344U (en) * | 2016-04-20 | 2016-09-14 | 瑞安市博诺机电有限公司 | Grooved reverser |
| CN205622011U (en) * | 2016-04-20 | 2016-10-05 | 瑞安市恒丰机电有限公司 | Commutator segment |
| CN207834804U (en) * | 2018-01-25 | 2018-09-07 | 常州宝罗电机有限公司 | A kind of motor commutator |
| CN108767610A (en) * | 2018-04-27 | 2018-11-06 | 中钢集团西安重机有限公司 | A kind of commutator and its processing method preventing film dancing |
| CN213026832U (en) * | 2020-10-27 | 2021-04-20 | 苏州瑞崮电器有限公司 | Novel automobile commutator structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6958563B2 (en) * | 2003-01-16 | 2005-10-25 | Energy Conversion Systems Holdings, Llc | Riser commutators |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203456704U (en) * | 2013-09-29 | 2014-02-26 | 湖州展瑞机电科技有限公司 | Super-strength commutator |
| CN205583344U (en) * | 2016-04-20 | 2016-09-14 | 瑞安市博诺机电有限公司 | Grooved reverser |
| CN205622011U (en) * | 2016-04-20 | 2016-10-05 | 瑞安市恒丰机电有限公司 | Commutator segment |
| CN207834804U (en) * | 2018-01-25 | 2018-09-07 | 常州宝罗电机有限公司 | A kind of motor commutator |
| CN108767610A (en) * | 2018-04-27 | 2018-11-06 | 中钢集团西安重机有限公司 | A kind of commutator and its processing method preventing film dancing |
| CN213026832U (en) * | 2020-10-27 | 2021-04-20 | 苏州瑞崮电器有限公司 | Novel automobile commutator structure |
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