CN213990435U

CN213990435U - Overload protection device for direct-current brushless motor

Info

Publication number: CN213990435U
Application number: CN202023025745.3U
Authority: CN
Inventors: 吴群雄; 王瑶; 余悦
Original assignee: CHINA STAR TECHNOLOGY ELECTRONICS Ltd
Current assignee: CHINA STAR TECHNOLOGY ELECTRONICS Ltd
Priority date: 2020-12-15
Filing date: 2020-12-15
Publication date: 2021-08-17
Anticipated expiration: 2030-12-15

Abstract

The utility model discloses a DC brushless motor is with overload protection device relates to motor technical field. The utility model discloses a fixed establishment, protection mechanism and latch mechanism, fixed establishment include motor body, and four joint grooves have evenly been seted up at a motor body lateral wall middle part, and protection mechanism includes the overload protection ware body, and the standing groove has been seted up to overload protection ware body bottom. The utility model discloses a remove the leather slot and use with the cooperation of annular blade to skin the power cord, remove along second extrusion inslot portion through pushing down the extrusion piece, thereby fix the inside power cord of three interfaces through the stripper plate, drive two joint poles through holding two extrusion poles of pressure and remove along removing downthehole portion, loosen the joint pole at last and then make joint pole joint be fixed in joint inslot portion through reset spring's elasticity, thereby make this overload protection device for DC brushless motor, reduce staff's the work degree of difficulty and then improve work efficiency, and then reduce the potential safety hazard.

Description

Overload protection device for direct-current brushless motor

Technical Field

The utility model belongs to the technical field of the motor, especially, relate to an overload protection device for DC brushless motor.

Background

The brushless DC motor is composed of motor main body and driver, it is a typical electromechanical integration product, the brushless motor is a motor without brush and commutator, also called commutator motor, the rotor of the motor is adhered with magnetized permanent magnet, in order to detect the polarity of the rotor of the motor, a position sensor is installed in the motor, the driver is composed of power electronic device and integrated circuit, its function is to receive the starting, stopping and braking signals of the motor to control the starting, stopping and braking of the motor, receive the position sensor signal and positive and negative rotation signals to control the on-off of each power tube of the inverter bridge, generate continuous torque, receive speed command and speed feedback signal to control and adjust the rotating speed, provide protection and display, the motor overload means that the actual power of the motor exceeds the rated power of the motor under certain condition, this phenomenon is called motor overload, and the existing overload protection device for the dc brushless motor has the following defects:

1. when overload protection ware is installed to the motor, generally connect motor power cord main circuit through three interfaces, current DC brushless motor is with overload protection device, is not convenient for skin the power cord, and is not convenient for the power cord installation to lead to the staff to waste time and energy when installing overload protection ware to the motor.

2. The overload device needs to be fixed after being installed, and the existing overload protection device for the direct current brushless motor is free of a fixing device, so that potential safety hazards are easy to occur.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an overload protection device for DC brushless motor, use the power cord to skin through removing the leather slot and the cooperation of annular blade, remove along the inside removal of second extrusion inslot through pushing down the extrusion piece, and then promote the stripper plate and remove along the inside removal of first extrusion inslot, thereby fix the power cord of three interface inside through the stripper plate, drive two joint poles through holding two stripper rods and remove along removing the downthehole portion of hole, and then extrude each other, it drives the joint pole and moves down to the joint inslot portion to push down the overload protection device body, loosen the joint pole at last and then make the joint pole joint be fixed in the joint inslot portion through reset spring's elasticity, thereby make this overload protection device for DC brushless motor, reduce the work degree of difficulty of staff and then improve work efficiency, and then reduce the potential safety hazard.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme:

the utility model relates to an overload protection device for brushless DC motor, including fixed establishment, protection mechanism and latch mechanism, fixed establishment includes motor body, four joint grooves have evenly been seted up at a motor body lateral wall middle part, protection mechanism includes the overload protection ware body, the standing groove has been seted up to overload protection ware body bottom, latch mechanism includes four extrusion pole, four extrusion pole middle part top all cup joints and is fixed with the rubber sleeve, fixed establishment activity joint is in the protection mechanism bottom, inside the spacing protection mechanism that is fixed in of latch mechanism, the joint groove is convenient for fix the joint pole, and the standing groove is convenient for place the power cord, and extrusion pole person of facilitating the use removes the joint pole, and the rubber sleeve is convenient for increase frictional force.

Further, four removal holes have evenly been seted up in overload protection ware body bottom four corners, and four removal hole middle part inner walls have all linked firmly the gag lever post, standing groove top inner wall one side has been seted up and has been removed the skin groove, and standing groove top inner wall opposite side has evenly seted up three interface, and the position of the butt joint pole of being convenient for through removing the hole is carried on spacingly, fixes the butt joint pole through the gag lever post, uses to skin the power cord through removing the skin groove and the cooperation of annular blade.

Further, remove the inside slide clamping of leather groove and connect and draw the frame, and remove leather groove open end inner wall and link firmly annular blade, it is three interface is kept away from open end one end inner wall and has all been seted up first extrusion groove, and three first extrusion groove bottom has seted up second extrusion groove, removes and then promotes the power cord crust that removes the leather inslot portion and remove to removing the leather groove outside along removing the leather groove through pulling frame, and three interfaces are convenient for place the back power cord of skinning.

Furthermore, it is three equal sliding connection has the stripper plate inside the first extrusion inslot, the inside sliding connection of second extrusion inslot has the stripper block, and the stripper block is connected with the three stripper plate extrusion of corresponding position department, a stripper block bottom lateral wall has linked firmly the fixed plate, and fixed plate bottom middle part closes soon and is connected with fastening bolt, removes along second extrusion inslot portion through pushing down the stripper block, and then promotes the stripper plate and remove along first extrusion inslot portion to fix the inside power cord of three interfaces through the stripper plate, then fix the fixed plate through screwing up fastening bolt, and then fix the position of stripper block.

Furthermore, four the lateral wall both ends of an extrusion pole all link firmly two joint poles, two the joint pole is a set of, and four groups joint poles all slide inside four removal holes that correspond position department, are convenient for the spacing removal of joint pole through removing the hole.

Furtherly, it is a plurality of spacing hole has all been seted up at the joint pole middle part, two spacing hole is a set of, and four spacing holes of four groups all with four gag lever post sliding connection that correspond position department, four groups joint pole bottom middle part has all linked firmly reset spring, and four joint pole bottom joints of four groups are fixed in four joint inslots that correspond position department, drives two joint poles through holding two extrusion poles and moves along the inside of removal hole, and then extrudees each other to extrude the drive reset spring compression deformation each other through two joint poles, draw then push down the overload protection ware body and drive the joint pole and move down to the joint inslot, loosen the joint pole at last and then make the joint pole joint be fixed in the joint inslot through reset spring's elasticity, thereby fix the overload protection ware body.

The utility model discloses following beneficial effect has:

1. the utility model discloses a remove the cooperation of skin groove and annular blade and use the power cord and skin, then remove and then promote to remove the power cord crust of skin inslot portion and remove to removing the skin inslot portion through pulling frame along removing the skin groove, insert the power cord after skinning in three interfaces inside, remove along second extrusion inslot portion through pushing down the extrusion piece, and then promote the stripper plate and remove along first extrusion inslot portion, thereby fix the inside power cord of three interfaces through the stripper plate, then fix the fixed plate through screwing up fastening bolt, and then fix the position of extrusion piece, thereby make this DC brushless motor use overload protection device, can skin the power cord, and be convenient for the power cord installation, thereby reduce staff's the work degree of difficulty and then improve work efficiency.

2. The utility model discloses a hold and press two extrusion poles and drive two joint poles and remove along the inside removal of removal hole, and then extrude each other to extrude each other through two joint poles and drive reset spring compression deformation, then push down the overload protection ware body and drive the joint pole and move down to joint inslot portion, loosen the joint pole at last and then make joint pole joint be fixed in joint inslot portion through reset spring's elasticity, thereby make this overload protection device for DC brushless motor, can be fixed in a motor lateral wall, thereby reduce the potential safety hazard.

Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the fixing mechanism of the present invention;

FIG. 3 is a schematic view of the structure of the clamping mechanism of the present invention;

FIG. 4 is a bottom schematic view of the protection mechanism of the present invention;

FIG. 5 is an explosion effect diagram of the protection mechanism of the present invention;

fig. 6 is a partially enlarged view of a portion a in fig. 5 according to the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

100. a fixing mechanism; 101. a motor body; 102. a clamping groove; 200. a protection mechanism; 201. an overload protector body; 202. a placement groove; 203. moving the hole; 204. a limiting rod; 205. a peeling groove; 206. three interfaces; 207. an annular blade; 208. a first extrusion groove; 209. pulling the frame; 210. a fixing plate; 220. a second extrusion groove; 230. a pressing plate; 240. extruding the block; 250. fastening a bolt; 300. a clamping mechanism; 301. an extrusion stem; 302. a rubber sleeve; 303. a clamping and connecting rod; 304. a limiting hole; 305. a return spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-6, the present invention relates to an overload protection device for a dc brushless motor, comprising a fixing mechanism 100, a protection mechanism 200 and a clamping mechanism 300, wherein the fixing mechanism 100 comprises a motor body 101, four clamping grooves 102 are uniformly formed in the middle of a side wall of the motor body 101, the protection mechanism 200 comprises an overload protector body 201, a placing groove 202 is formed in the bottom end of the overload protector body 201, the clamping mechanism 300 comprises four extrusion rods 301, rubber sleeves 302 are fixedly sleeved on the top ends of the middle parts of the four extrusion rods 301, the fixing mechanism 100 is movably clamped in the bottom end of the protection mechanism 200, the clamping mechanism 300 is fixed inside the protection mechanism 200 in a limited manner, the fastening of the fastening bar 303 is facilitated by the fastening groove 102, the placing of the power cord is facilitated by the placing groove 202, the user can move the clamping rod 303 conveniently by pressing the rod 301, and the friction force can be increased conveniently by the rubber sleeve 302.

As shown in fig. 4-6, four moving holes 203 are uniformly formed at four corners of the bottom end of the overload protector body 201, the inner walls of the middle portions of the four moving holes 203 are fixedly connected with limit rods 204, a peeling groove 205 is formed at one side of the inner wall of the top end of the placing groove 202, three inserting ports 206 are uniformly formed at the other side of the inner wall of the top end of the placing groove 202, the position of a clamping rod 303 is conveniently limited through the moving holes 203, the clamping rod 303 is fixed through the limit rods 204, a power line is peeled through the matching use of the peeling groove 205 and a circular blade 207, a pulling frame 209 is slidably clamped inside the peeling groove 205, the circular blade 207 is fixedly connected to the inner wall of the opening end of the peeling groove 205, first extruding grooves 208 are formed in the inner walls of the three inserting ports 206 at ends far away from the opening end, second extruding grooves 220 are formed at the bottom ends of the three first extruding grooves 208, the pulling frame 209 is moved along the peeling groove 205 to push the power line skin inside the peeling groove 205 to move to the outside of the peeling groove 205, three interface 206 is convenient for place the back power cord of skinning, three inside equal sliding connection of extrusion groove 208 has stripper plate 230, the inside sliding connection of second extrusion groove 220 has stripper block 240, and stripper block 240 extrudees with the three stripper plate 230 extrusion that corresponds position department and is connected, stripper block 240 bottom lateral wall has linked firmly fixed plate 210, and fixed plate 210 bottom middle part closes soon and is connected with fastening bolt 250, extrude 240 along the inside removal of second extrusion groove 220 through pushing down, and then promote stripper plate 230 along the inside removal of first extrusion groove 208, thereby fix the inside power cord of three interface 206 through stripper plate 230, then fix fixed plate 210 through screwing up fastening bolt 250, and then fix the position of stripper block 240.

As shown in fig. 3-4, two clamping rods 303 are fixedly connected to two ends of a sidewall of each of four extrusion rods 301, the two clamping rods 303 form a group, four groups of clamping rods 303 slide in four moving holes 203 at corresponding positions, the clamping rods 303 are convenient to move in a limiting manner through the moving holes 203, a plurality of clamping rods 303 are respectively provided with a limiting hole 304 at the middle part thereof, two limiting holes 304 form a group, the four groups of limiting holes 304 are respectively connected with four limiting rods 204 at corresponding positions in a sliding manner, the four groups of clamping rods 303 are respectively fixedly connected with a return spring 305 at the middle part of the bottom end thereof, the bottom ends of the four groups of clamping rods 303 are clamped and fixed in four clamping grooves 102 at corresponding positions, the two extrusion rods 301 are held to drive the two clamping rods 303 to move along the inside of the moving holes 203 and further extrude each other, so that the two clamping rods 303 extrude the return spring 305 to compress and deform, and then the overload protector body 201 is pressed down to drive the clamping rods 303 to move down to the clamping grooves 102, finally, the clamping rod 303 is loosened, so that the clamping rod 303 is clamped and fixed in the clamping groove 102 through the elastic force of the return spring 305, and the overload protector body 201 is fixed.

The working principle is as follows:

peeling a power line by matching the peeling groove 205 and the annular blade 207, pulling the pulling frame 209 to move along the peeling groove 205 to push the power line sheath inside the peeling groove 205 to move to the outside of the peeling groove 205, inserting the peeled power line inside the three-jack 206, moving along the inside of the second extrusion groove 220 by pressing the extrusion block 240 downwards, further pushing the extrusion plate 230 to move along the inside of the first extrusion groove 208, thereby fixing the power line inside the three-jack 206 by the extrusion plate 230, then fixing the fixing plate 210 by screwing the fastening bolt 250, further fixing the position of the extrusion block 240, then driving the two clamping rods 303 to move along the inside of the moving hole 203 by holding and pressing the two extrusion rods 301, further pressing each other, thereby driving the reset spring 305 to compress and deform by mutual extrusion of the two clamping rods 303, then pressing the overload protector body 201 to drive the clamping rods 303 to move downwards to the inside the clamping grooves 102, finally, the clamping rod 303 is loosened, so that the clamping rod 303 is clamped and fixed in the clamping groove 102 through the elastic force of the return spring 305, and the overload protector body 201 is fixed.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a DC brushless motor is with overload protection device, includes fixed establishment (100), protection mechanism (200) and latch mechanism (300), its characterized in that: fixed establishment (100) includes motor body (101), four joint grooves (102) have evenly been seted up at motor body (101) a lateral wall middle part, protection mechanism (200) are including overload protection ware body (201), standing groove (202) have been seted up to overload protection ware body (201) bottom, latch mechanism (300) are including four stripper bar (301), four stripper bar (301) middle part top all cup joints and is fixed with rubber sleeve (302), fixed establishment (100) activity joint is in protection mechanism (200) bottom, inside latch mechanism (300) spacing being fixed in protection mechanism (200).

2. The overload protection device for the brushless DC motor according to claim 1, wherein four moving holes (203) are uniformly formed at four corners of the bottom end of the overload protector body (201), the inner walls of the middle parts of the four moving holes (203) are fixedly connected with limit rods (204), a leather removing groove (205) is formed at one side of the inner wall at the top end of the placing groove (202), and three insertion ports (206) are uniformly formed at the other side of the inner wall at the top end of the placing groove (202).

3. The overload protection device for the brushless DC motor according to claim 2, wherein the leather removing groove (205) is slidably clamped with a pulling frame (209), the inner wall of the opening end of the leather removing groove (205) is fixedly connected with a ring blade (207), the inner walls of the three insertion ports (206) far away from the opening end are provided with first extrusion grooves (208), and the bottom ends of the three first extrusion grooves (208) are provided with second extrusion grooves (220).

4. The overload protection device for the brushless DC motor according to claim 3, wherein three first extrusion grooves (208) are slidably connected with extrusion plates (230), the second extrusion groove (220) is slidably connected with extrusion blocks (240), the extrusion blocks (240) are connected with the three extrusion plates (230) at corresponding positions in an extrusion manner, one side wall of the bottom end of each extrusion block (240) is fixedly connected with a fixing plate (210), and a fastening bolt (250) is screwed and connected to the middle part of the bottom end of each fixing plate (210).

5. The overload protection device for the brushless DC motor according to claim 4, wherein two clamping rods (303) are fixed to two ends of one side wall of four extrusion rods (301), two clamping rods (303) are in one group, and four groups of clamping rods (303) slide inside the four moving holes (203) at corresponding positions.

6. The overload protection device for the brushless direct-current motor according to claim 5, wherein a plurality of the clamping rods (303) are respectively provided with a limiting hole (304) at the middle part, two limiting holes (304) form a group, four groups of limiting holes (304) are respectively connected with four limiting rods (204) at corresponding positions in a sliding manner, a return spring (305) is fixedly connected to the middle part of the bottom ends of the four groups of clamping rods (303), and the bottom ends of the four groups of clamping rods (303) are clamped and fixed inside four clamping grooves (102) at corresponding positions.