CN210806980U

CN210806980U - Novel protection device of direct current motor

Info

Publication number: CN210806980U
Application number: CN201922373771.6U
Authority: CN
Inventors: 邹国华
Original assignee: Shenzhen Guoling Weite Motor Co ltd
Current assignee: Shenzhen Guoling Weite Motor Co ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-06-19
Anticipated expiration: 2029-12-26

Abstract

The utility model discloses a DC motor's novel protector, include inner tube, outer tube, DC motor and install in the epaxial gear of DC motor, the inner tube cover is located in DC motor's the pivot, inside the inner tube was located to the outer tube cover, outside bending type becomes the turn-ups of an annular structure on the left surface of inner tube, be equipped with a ring channel on the turn-ups left surface, the left side of inner tube is equipped with a sealing ring, the sealing ring just forms a loose ring to the outside protrusion of ring channel department, loose ring movable mounting is in the ring channel, the left surface of sealing ring offsets with the right flank of gear, and the right flank of outer tube expands outward and forms a fixed cover, fixed cover is located on the DC motor. The utility model discloses simple structure, through effectual length adjustment inner tube according to pivot on the motor and the distance between the outer tube, until making the sealing ring offset with installing the epaxial part of commentaries on classics, avoided appearing the space, increased protection scope and protection effect.

Description

Novel protection device of direct current motor

Technical Field

The utility model relates to the technical field of motors, concretely relates to DC motor's novel protector.

Background

The motor is an electromagnetic device for realizing electric energy conversion or transmission according to an electromagnetic induction law. The motor is represented by letter M in the circuit, and its main function is to generate driving torque as the power source of electrical appliances or various machines, and the generator is represented by letter G in the circuit, and its main function is to convert mechanical energy into electric energy.

The motor passes through the output shaft of motor and the motor shaft is connected with the object that needs the drive, therefore, the guard action of motor shaft is important promptly, the outside cover at the motor shaft is equipped with the protection casing usually, the protection casing can prevent that external object etc. from pounding the motor shaft, but present safety cover structure is too simple, can not adjust according to the length of motor shaft, and in case install the gear on the motor shaft, behind the part of synchronizing wheel class, can have the space between protection casing and the part, make outside object can contact the motor shaft along the space, cause the damage of motor shaft easily.

Disclosure of Invention

The utility model aims to solve the technical problem that a novel protector of DC motor is provided to solve the problem of proposing among the above-mentioned background art.

The utility model discloses a realize through following technical scheme: a novel protection device of a direct current motor comprises an inner pipe, an outer pipe, the direct current motor and a gear installed on a rotating shaft of the direct current motor, wherein the inner pipe is sleeved on the rotating shaft of the direct current motor, the outer pipe is sleeved inside the inner pipe, a flange of an annular structure is formed by bending the left side surface of the inner pipe outwards, an annular groove is formed in the left side surface of the flange, a sealing ring is arranged on the left side of the inner pipe, the sealing ring protrudes outwards from the annular groove to form a movable ring, the movable ring is movably installed in the annular groove, the left side surface of the sealing ring abuts against the right side surface of the gear, external threads are arranged on the outer wall surface of the inner pipe, internal threads are arranged on the inner wall surface of the outer pipe, the inner pipe is connected with the internal threads on the outer pipe in a meshed mode through the external threads, the right side surface of the outer pipe abuts against the left, and is locked and fixed on the direct current motor through an external bolt.

As the preferred technical scheme, the cross sections of the annular groove and the movable ring are arranged in a dovetail structure, more than one ball groove is arranged on the outer ring, the inner ring and the right side surface of the movable ring, a ball body is movably arranged in each ball groove, and one part of each ball body extends into the annular groove along the opening of each ball groove and is abutted against the inner wall surface of the annular groove.

As preferred technical scheme, be equipped with more than one screw hole on the outer tube, all threaded connection has headless bolt in the screw hole, and headless bolt one end all offsets with the outer wall of inner tube, is locked by headless bolt between inner tube and the outer tube and fixes.

As a preferred technical scheme, more than one handle in an L-shaped structure is arranged on the outer ring surface of the flanging.

The utility model has the advantages that: the utility model discloses simple structure, through effectual length adjustment inner tube according to pivot on the motor and the distance between the outer tube, until making the sealing ring offset with installing the epaxial part of commentaries on classics, avoided appearing the space, increased protection scope and protection effect.

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 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 these drawings without creative efforts.

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

fig. 2 is a partially enlarged view of a portion a in fig. 1.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected" and "disposed" are to be construed broadly, and may for example be fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 and fig. 2, the novel protection device for a dc motor of the present invention comprises an inner tube 4, an outer tube 6, a dc motor 3 and a gear 1 installed on a rotating shaft of the dc motor 3, wherein the inner tube 4 is sleeved on the rotating shaft of the dc motor 3, the outer tube 6 is sleeved inside the inner tube 4, a flange 14 of an annular structure is formed by bending the left side surface of the inner tube 4 outwards, a ring groove 9 is arranged on the left side surface of the flange 14, a sealing ring 13 is arranged on the left side of the inner tube 4, the sealing ring 13 protrudes outwards from the ring groove 9 to form a movable ring 12, the movable ring 12 is movably installed in the ring groove 9, the left side surface of the sealing ring 13 abuts against the right side surface of the gear 1, an external thread is arranged on the outer wall surface of the inner tube 4, an internal thread is arranged on the inner wall surface of the outer tube 6, the inner tube 4 is engaged with the internal thread on the outer tube, and the right side of the outer tube 6 expands outwards to form a fixed cover 7, and the fixed cover 7 is sleeved on the direct current motor 3 and is locked and fixed on the direct current motor 3 through an external bolt.

In this embodiment, the cross sections of the annular groove 9 and the movable ring 12 are both arranged in a dovetail structure, more than one spherical groove is arranged on the outer ring, the inner ring and the right side surface of the movable ring 12, a sphere 11 is movably mounted in each spherical groove, and a part of the sphere 11 extends into the annular groove 9 along the opening of the spherical groove and abuts against the inner wall surface of the annular groove 9.

In this embodiment, the outer tube 6 is provided with more than one screw hole, the screw holes are all connected with the headless bolt 5 through screw threads, one end of the headless bolt 5 is abutted to the outer wall surface of the inner tube 4, and the inner tube 4 and the outer tube 6 are locked and fixed by the headless bolt.

In this embodiment, more than one handle 2 in an "L" shape structure is installed on the outer ring surface of the flange 14.

The inner tube, the outer tube and the fixed cover are sleeved on the rotating shaft before the gear is not installed, after the gear is installed on the rotating shaft, the inner tube is rotated, the inner tube is moved leftwards along the threads until the sealing ring is abutted to the right side face of the gear, and therefore gap density between the gear and the inner tube is effectively reduced, external objects are prevented from contacting the rotating shaft along gaps, and safety is improved.

When the gear rotates, the sealing ring can be driven, the rotation of the sealing ring drives the movable ring, and the friction between the movable ring and the annular groove is reduced under the rolling of the ball body on the movable ring.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the creative work should be covered within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims

1. The utility model provides a novel protector of DC motor which characterized in that: comprises an inner pipe (4), an outer pipe (6), a direct current motor (3) and a gear (1) arranged on a rotating shaft of the direct current motor (3), wherein the inner pipe (4) is sleeved on the rotating shaft of the direct current motor (3), the outer pipe (6) is sleeved inside the inner pipe (4), the left side surface of the inner pipe (4) is bent outwards to form a flange (14) with an annular structure, an annular groove (9) is arranged on the left side surface of the flange (14), a sealing ring (13) is arranged on the left side of the inner pipe (4), the sealing ring (13) protrudes outwards from the annular groove (9) to form a movable ring (12), the movable ring (12) is movably arranged in the annular groove (9), the left side surface of the sealing ring (13) is abutted against the right side surface of the gear (1), an external thread is arranged on the outer wall surface of the inner pipe (4), an internal thread is arranged on the inner wall surface of the outer pipe (6), the inner pipe (4), the right side face of the outer pipe (6) is abutted to the left side end face of the direct current motor (3), the right side face of the outer pipe (6) is outwards expanded to form a fixed cover (7), and the fixed cover (7) is sleeved on the direct current motor (3) and is locked and fixed on the direct current motor (3) through an external bolt.

2. The novel protector of a direct current motor according to claim 1, characterized in that: the cross sections of the annular groove (9) and the movable ring (12) are arranged in a dovetail structure, more than one spherical groove is arranged on the outer ring, the inner ring and the right side surface of the movable ring (12), a sphere (11) is movably arranged in each spherical groove, and one part of the sphere (11) extends into the annular groove (9) along the opening of each spherical groove and is abutted against the inner wall surface of the annular groove (9).

3. The novel protector of a direct current motor according to claim 1, characterized in that: be equipped with more than one screw hole on outer tube (6), equal threaded connection has headless bolt (5) in the screw hole, and headless bolt (5) one end all offsets with the outer wall of inner tube (4), is locked by headless bolt between inner tube (4) and outer tube (6) and fixes.

4. The novel protector of a direct current motor according to claim 1, characterized in that: more than one handle (2) with L-shaped structure is arranged on the outer ring surface of the flanging (14).