CN218040964U

CN218040964U - Direct-current brushless outer rotor motor convenient to maintain

Info

Publication number: CN218040964U
Application number: CN202222182278.8U
Authority: CN
Inventors: 董国威; 袁帆
Original assignee: Zhuhai Kaiyue Technology Co ltd
Current assignee: Zhuhai Kaiyue Technology Co ltd
Priority date: 2022-08-18
Filing date: 2022-08-18
Publication date: 2022-12-13
Anticipated expiration: 2032-08-18

Abstract

The utility model discloses a maintain convenient brushless external rotor electric machine of direct current, include: the outer rotor comprises a shell and an end cover, the end cover is arranged at one end of the shell, and a through hole penetrates through the end cover; the locking assembly comprises an insertion rod, a locking block and a clamping block, the insertion rod penetrates through the through hole, the insertion rod extends out of the through hole, and the outer peripheral wall of the insertion rod is provided with a sliding groove; a clamping groove is formed in the peripheral wall of the inserting rod along the circumferential direction, and one end of the clamping groove is communicated with the bottom end of the sliding groove; the locking block is provided with a jack for the insertion rod to penetrate through, the clamping block is fixed on the peripheral wall of the jack, and the clamping block is connected with the sliding groove and the clamping groove in a sliding mode. The utility model discloses in, when needs are cleared up or are maintained to outer rotor inside, rotate the latch segment, the latch segment drives the fixture block and removes to the spout. The locking block is taken out in the direction far away from the end cover, and the clamping block slides in the sliding groove and finally breaks away from the end cover. The end cover loses the spacing of latch segment this moment, with end cover and casing separation, can accomplish the inner structure who exposes the external rotor, makes things convenient for the manual work to maintain or clear up.

Description

Direct-current brushless outer rotor motor convenient to maintain

Technical Field

The utility model relates to the technical field of electric machines, concretely relates to maintain convenient brushless external rotor electric machine of direct current.

Background

The motor is a commonly used power device, and comprises an inner rotor motor and an outer rotor motor. The rotor part of the outer rotor motor is directly connected with the driven element, so that the useless space between the motor and the equipment can be effectively reduced, and the energy loss of indirect driving is greatly reduced due to a direct driving mode.

An existing outer rotor motor usually comprises an outer rotor and a stator, wherein the stator rotates inside the stator, and a rotating shaft is fixed on the outer rotor. When the stator inside the outer rotor is damaged or dust inside the outer rotor needs to be cleaned, the outer rotor needs to be opened manually through brute force or the inside of the outer rotor needs to be cleaned through gaps, operation is complex, and manual maintenance is inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a maintain convenient brushless external rotor electric machine of direct current aims at solving current external rotor electric machine and maintains complicated problem.

In order to achieve the above object, the utility model provides a maintain convenient brushless external rotor electric machine of direct current includes:

the outer rotor comprises a shell and an end cover, the end cover is arranged at one end of the shell, and a through hole penetrates through the end cover;

the locking assembly comprises an inserting rod, a locking block and a clamping block, the inserting rod penetrates through the through hole, the inserting rod extends out of the through hole, a sliding groove is formed in the outer peripheral wall of the inserting rod, the sliding groove is formed in the length direction of the inserting rod, and one end, far away from the shell, of the sliding groove penetrates through the inserting rod; a clamping groove is formed in the peripheral wall of the inserting rod along the circumferential direction, and one end of the clamping groove is communicated with the bottom end of the sliding groove; the locking block is provided with an insertion hole for the insertion rod to penetrate through, the fixture block is fixed on the peripheral wall of the insertion hole, the fixture block is connected to the sliding groove in a sliding mode, and the fixture block slides in the clamping groove and is clamped in the clamping groove; when the clamping block is located in the clamping groove, the end cover is tightly propped against the shell through the locking block.

Preferably, the shell is annular, the inserted link and the axis of the shell are arranged in a staggered manner, and the clamping groove is formed in one side of the inserted link, which is far away from the axis of the shell; the locking block is a rectangular block, and the jack is arranged on one side of the locking block.

Preferably, the latch segment orientation one side of end cover inlays and is equipped with first magnetism and inhale the piece, it inhales the piece to inlay on the end cover to be equipped with the second that is used for predetermineeing first magnetism and inhales the piece and adsorbs.

Preferably, a connecting bolt penetrates through the end cover and connects the end cover with the shell.

Preferably, the connecting bolt is attached to one side of the locking block facing the axis.

Preferably, the end cover is further provided with a limiting assembly, the limiting assembly comprises an elastic piece and a clamping bead, the end cover is provided with a yielding hole, the clamping bead is slidably connected in the yielding hole, the elastic piece is arranged in the yielding hole, and two ends of the elastic piece are respectively connected to the clamping bead and the hole bottom of the yielding hole; the clamping bead is used for tightly abutting one side of the locking block, which faces the end cover.

Preferably, the elastic member is a compression spring.

Preferably, the edge of the inserted bar far away from the end cover is in a chamfer arrangement.

Preferably, the locking assembly is arranged on the end cover at intervals.

Preferably, the end cover is provided with a heat dissipation hole.

The utility model discloses among the technical scheme, when needs clear up or maintain outside rotor inside to the inserted bar rotates the latch segment as the center, and the latch segment drives the fixture block and breaks away from the draw-in groove and removes to the spout. The locking block is taken out in the direction far away from the end cover, and the clamping block slides in the sliding groove and finally breaks away from the end cover. The end cover loses the spacing of latch segment this moment, with end cover and casing separation, can accomplish the inner structure who exposes the external rotor, makes things convenient for the manual work to maintain or clear up.

Drawings

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

Fig. 1 is a schematic structural diagram of a dc brushless external rotor motor according to an embodiment of the present invention;

fig. 2 is an enlarged schematic view of a portion a in fig. 1.

The reference numbers illustrate:

reference numerals	Name(s)	Reference numerals	Name (R)
				100	Shell body	700	First magnetic attraction piece
200	End cap	800	Second magnetic attraction piece
				201	Through hole	900	Connecting bolt
300	Locking assembly	110	Limiting assembly
				301	Inserted link	111	Clamping bead
302	Locking block	112	Elastic piece
				303	Clamping block	112a	Compression spring
400	Sliding chute	120	Abdicating hole
				500	Clamping groove	130	Chamfering
600	Jack hole	140	Heat dissipation hole

The purpose of the present invention is to provide a portable electronic device, which can be easily and conveniently operated.

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 skilled in the art without making creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front, and rear … …) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In addition, the technical solutions between the embodiments of the present invention can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are contradictory or cannot be realized, the combination of such technical solutions should be considered to be absent, and is not within the protection scope of the present invention.

The utility model provides a maintain convenient brushless external rotor electric machine of direct current.

Referring to fig. 1 to 2, in an embodiment of the present invention, a dc brushless external rotor motor with convenient maintenance includes: the outer rotor comprises a shell 100 and an end cover 200, wherein the end cover 200 is arranged at one end of the shell 100, and a through hole 201 penetrates through the end cover 200; the locking assembly 300 comprises an insertion rod 301, a locking block 302 and a clamping block 303, the insertion rod 301 penetrates through the through hole 201, the insertion rod 301 extends out of the through hole 201, the peripheral wall of the insertion rod is provided with a sliding groove 400, the sliding groove 400 is arranged along the length direction of the insertion rod 301, and one end, far away from the shell 100, of the sliding groove 400 penetrates through the insertion rod 301; the outer peripheral wall of the insert rod 301 is circumferentially provided with a clamping groove 500, and one end of the clamping groove 500 is communicated with the bottom end of the sliding groove 400; the locking block 302 is provided with a jack 600 for the insertion rod 301 to penetrate through, the fixture block 303 is fixed on the peripheral wall of the jack 600, the fixture block 303 is connected to the sliding groove 400 in a sliding manner, and the fixture block 303 slides from the sliding groove 400 to the clamping groove 500 and is clamped in the clamping groove 500; when the latch 303 is located in the slot 500, the locking block 302 presses the end cap 200 against the housing 100.

The utility model discloses in, when needs clear up or maintain to outer rotor inside to inserted bar 301 rotates latch segment 302 as the center, and latch segment 302 drives the fixture block 303 and breaks away from draw-in groove 500 and removes to spout 400. The locking block 302 is removed away from the cap 200 and the latch 303 slides in the slide channel 400 and eventually disengages. At this time, the end cover 200 loses the limit of the locking block 302, and the end cover 200 is separated from the shell 100, so that the internal structure of the exposed outer rotor can be completed, and manual maintenance or cleaning is facilitated.

Specifically, the housing 100 has a circular ring shape, the end cap 200 has a circular disk shape, and the end cap 200 is coaxially fixed to one end of the housing 100. The axial direction of the insertion rod 301 is the same as the axial direction of the housing 100, and the insertion rod 301 is fixed to one end of the housing 100 near the end cap 200.

Further, the insertion rod 301 and the axis of the housing 100 are arranged in a staggered manner, i.e. arranged eccentrically, and the clamping groove 500 is arranged on one side of the insertion rod 301 away from the axis of the housing 100; the latch segment is the rectangle piece, and jack 600 sets up in one side of fixed block. Because the outer rotor is in a rotating state when the motor is started, the locking block can move the heavy end to one side away from the axis of the end cover 200 along with inertia, so that the clamping block 303 can be ensured to be always positioned in the clamping groove 500, and the clamping block 303 is prevented from being separated from the clamping groove 500.

In this embodiment, the motor is vertically disposed, the end cap 200 is located at the top end of the housing 100, and the sliding groove 400 is vertically disposed. The locking groove 500 is an arc-shaped groove, and the locking groove 500 is flush with the bottom wall of the sliding groove 400. After the latch 303 moves to the bottom end of the sliding groove 400, the latch 302 is rotated, the latch 303 is driven by the latch 302 to move into the slot 500, at this time, the latch 302 cannot be far away from the end cap 200, and the end cap 200 is tightly pressed to the housing 100 by the latch 302.

Furthermore, a first magnetic part 700 is embedded in one side of the locking block facing the end cover 200, and a second magnetic part 800 for adsorbing the first magnetic part 700 is embedded in the end cover 200; when the first magnetic element 700 and the second magnetic element 800 are attracted, the fixture block 303 is engaged with the slot 500. After the fixture block 303 is moved to the slot 500, the first magnetic element 700 on the fixture block and the corresponding second magnetic element 800 on the end cap 200 attract each other. The fixing block is prevented from rotating so that the clamping block 303 is separated from the clamping groove 500, and the locking block 302 can be guaranteed to be always abutted against the end cover 200. The first and second magnetically

attractive elements

700 and 800 are preferably magnets.

In an embodiment, the locking assembly 300 is provided in plurality at intervals on the end cap 200. The plurality of locking assemblies 300 improves the coupling stability between the cap 200 and the case 100.

Specifically, the number of the locking assemblies 300 corresponds to the number of the first magnetic attraction pieces 700 and the second magnetic attraction pieces 800, and in one embodiment, four locking assemblies 300 are uniformly arranged around the axis of the end cap 200. The catch 500 on each plunger 301 faces away from the axis of the end cap 200.

In the embodiment, the end cap 200 has a connection bolt 900 penetrating therethrough, and the connection bolt 900 connects the end cap 200 with the housing 100. The stability of the connection between the end cap 200 and the case 100 is improved by the connection bolt 900.

Specifically, the connecting bolt 900 penetrates and slides in the end cap 200, and the connecting bolt 900 penetrates through one end of the end cap 200 and is screwed to the housing 100.

Further, the number of the connecting bolts 900 is the same as that of the locking assemblies 300, and the connecting bolts 900 are correspondingly arranged one to one, and the connecting bolts 900 are attached to one side of the locking block 302 facing the axis. After the locking block 302 is installed in place, namely the clamping block 303 is located in the clamping groove 500, after the connecting bolt 900 is installed, the connecting bolt 900 is attached to the locking block 302, and the locking block 302 is prevented from rotating through the connecting bolt 900. Therefore, when the locking block 302 is disassembled, the connecting bolt 900 is disassembled first and then the locking block 302 is rotated to complete the disassembly.

In an embodiment, the end cover 200 is further provided with a limiting assembly 110, the limiting assembly 110 includes an elastic member 112 and a clamping bead 111, the end cover 200 is provided with a yielding hole 120, the clamping bead 111 is slidably connected in the yielding hole 120, the elastic member 112 is disposed in the yielding hole 120, and two ends of the elastic member 112 are respectively connected to the clamping bead 111 and the bottom of the yielding hole 120. The elastic piece 112 pushes the clamping bead 111 to partially extend out of the abdicating hole 120; the clamping bead 111 is used for tightly holding one side of the locking block 302 facing the end cover 200. The clamping bead 111 is a sphere. During installation, the latch 303 moves to the bottom end of the sliding groove 400, and the latch 302 is attached to the end cap 200. The locking block 302 is rotated, the locking block 302 drives the clamping block 303 to enter the clamping groove 500, at the moment, the locking block 302 contacts the clamping ball 111, the clamping ball 111 is a ball, the clamping ball 111 moves towards the abdicating hole 120, the locking block 302 moves to a specified position, the clamping ball 111 is always upwards abutted against the locking block 302 under the action of the elastic piece 112, the clamping block 303 is always close to the inner top surface of the clamping groove 500, the friction force between the clamping block 303 and the clamping groove 500 is increased, and the clamping block 303 is prevented from being separated from the clamping groove 500.

Further, the elastic element 112 is a compression spring 112a, the compression spring 112a is disposed in the yielding hole 120, and two ends of the compression spring 112a are respectively fixed to the bottom of the ball 111 and the yielding hole 120. The compression spring 112a is a common standard component, and in other embodiments, the elastic component 112 is a spring plate or a rubber block. The stop assembly 110 may be replaced with a bean-jumping spring.

In an embodiment, the edge of the plunger 301 distal to the end cap 200 is chamfered 130. During installation, the insertion rod 301 conveniently penetrates through the through hole 201 through the chamfer 130, and collision is avoided.

In the embodiment, the heat dissipation holes 140 are formed on the end cap 200. When the interior of the outer rotor needs to be cleaned, the interior of the outer rotor can be directly cleaned through the heat dissipation holes 140, and manual maintenance is facilitated. In addition, the heat dissipation holes 140 also have a heat dissipation function.

The above only is the preferred embodiment of the present invention, not so limiting the patent scope of the present invention, all under the concept of the present invention, the equivalent structure transformation made by the contents of the specification and the drawings is utilized, or the direct/indirect application is included in other related technical fields in the patent protection scope of the present invention.

Claims

1. A maintain convenient brushless external rotor electric machine of direct current, its characterized in that, maintain convenient brushless external rotor electric machine of direct current includes:

the locking assembly comprises an inserting rod, a locking block and a clamping block, the inserting rod penetrates through the through hole, the inserting rod extends out of the through hole, a sliding groove is formed in the outer peripheral wall of the inserting rod, the sliding groove is formed in the length direction of the inserting rod, and one end, far away from the shell, of the sliding groove penetrates through the inserting rod; a clamping groove is formed in the peripheral wall of the inserting rod along the circumferential direction, and one end of the clamping groove is communicated with the bottom end of the sliding groove; the locking block is provided with an insertion hole for the insertion rod to penetrate through, the fixture block is fixed on the peripheral wall of the insertion hole, the fixture block is connected to the sliding groove in a sliding mode, and the fixture block is arranged in the clamping groove in a sliding mode and clamped in the clamping groove in a clamping mode; when the clamping block is located in the clamping groove, the end cover is tightly abutted to the shell through the locking block.

2. The brushless dc external rotor motor according to claim 1, wherein the housing has a circular shape, the insertion rod is disposed in a position offset from an axis of the housing, and the engaging groove is formed on a side of the insertion rod away from the axis of the housing; the locking block is a rectangular block, and the insertion hole is formed in one side of the locking block.

3. The brushless dc external rotor motor according to claim 2, wherein a first magnetic member is embedded in one side of the locking block facing the end cap, and a second magnetic member for pre-setting the first magnetic member to attract is embedded in the end cap.

4. The brushless dc external rotor motor according to claim 2, wherein a connection bolt penetrates the end cap, and the connection bolt connects the end cap to the housing.

5. The brushless DC external rotor motor according to claim 4, wherein the connecting bolt is engaged with a side of the locking block facing the axis.

6. The brushless DC external rotor motor according to any one of claims 1-5, wherein the end cap is further provided with a limiting component, the limiting component comprises an elastic member and a clamping bead, the end cap is provided with a step-down hole, the clamping bead is slidably connected to the step-down hole, the elastic member is disposed in the step-down hole, and two ends of the elastic member are respectively connected to the clamping bead and the bottom of the step-down hole; the clamping bead is used for tightly abutting against one side, facing the end cover, of the locking block.

7. The easy-to-maintain brushless dc external rotor motor according to claim 6, wherein the elastic member is a compression spring.

8. The brushless DC external rotor motor according to any one of claims 1-5, wherein the edge of the insertion rod away from the end cap is chamfered.

9. The brushless DC external rotor motor according to any one of claims 1-5, wherein the locking assembly is provided in plurality at intervals on the end cap.

10. The brushless DC external rotor motor according to any one of claims 1-5, wherein the end cap has heat dissipation holes.