CN218416014U - Waterproof sealing structure of motor - Google Patents

Abstract

The utility model relates to the technical field of electric machine, and a motor waterproof sealing structure is disclosed, including motor body, the last line hole of having seted up of motor body, the last periphery that just is located the line hole of motor body has seted up threaded through-hole. This waterproof sealing structure of motor, first screw cooperation line box and first sealing washer join in marriage first screw with motor body's assembly clearance hole sets up in the line box, and block the fit-up clearance of second screw and line box through the screw thread blind hole on the line box cooperation second screw and socket and second sealing washer, and then avoid water to flow into motor originally internally from the fit-up clearance of second screw and cause the condition emergence of this motor waterproof performance poor and security performance, support with the inner wall of line box through the face of cylinder on the socket simultaneously, the uneven second sealing washer atress that leads to warping when avoiding the socket to insert in the line box and tighten the second screw takes place the condition that influences this motor waterproof performance poor and security performance, reach the strong and high effect of security performance of motor wiring end cover waterproof performance.

Description

Waterproof sealing structure of motor

Technical Field

The utility model relates to the technical field of motors, specifically be a motor waterproof sealing structure.

Background

The IP (Ingress Protection waterproof and dustproof) grade is an international standard for measuring the dustproof and waterproof capability of equipment, the IP Protection grade is composed of two numbers, the 1 st number represents the dustproof and waterproof grade of the electric appliance, the 2 nd number represents the waterproof and waterproof sealing degree of the electric appliance, the larger the number is, the higher the Protection grade is, for example, the ipx grade is from 0 to 7: IPX0: no protection is carried out; IPX1: drip-proof type I, the drop of water dropping vertically has no harmful effects; IPX2: drip-proof type II, the water drop falling within the range of 15' from the vertical direction has no harmful effect; IPX3: rain-proof type, no harmful influence is caused when the rain falls within 60 degrees from the vertical direction; IPX4: the splash-proof type is free from harmful influence caused by water splashing in any direction; IPX5: the spray prevention type is directly affected by the water spray in any direction without harmful effect; IPX6: water resistance, and the water can not enter the interior when directly sprayed by water in any direction; the waterproof grade of IPX7 represents that the waterproof grade of the product is 7, namely the product is placed in 1 m water depth and soaked for 30 minutes, and the product can be normally used and is not influenced; the waterproof grade of the electronic measuring instrument reflects the moisture-proof and dust-proof capability of the instrument, particularly, the instrument cannot be in a severe environment of high humidity or dusty sand in outdoor activities, and the sealing and waterproof capability of the instrument is very important for ensuring the safe operation and the service life of the instrument;

the protection grade of the existing motor is mostly IPX5, but with the increasing improvement of the requirements on the working environment of the motor, the IPX5 can not meet the requirements on the normal and continuous operation of the motor in a plurality of severe environments, and the development trend of improving the protection grade of the motor to IPX7 becomes inevitable;

chinese patent publication No. CN206195527U discloses an increase an ampere of high protection level oil field top drive motor terminal box, it possesses basic waterproof performance, as shown in fig. 1, but it utilizes the bolt to pass casing and cap, and seal between casing and cap through along bolt axial extrusion sealed pad, because the outer wall cylinder of bolt must have certain assembly clearance with casing, cap and sealed pad in bolt and casing and cap and sealed pad installation, if the motor soaks under water, then it can't completely avoid water to get into the motor inside along bolt assembly clearance and cause this motor terminal cap waterproof performance poor and have the condition emergence of potential safety hazard, so propose a motor waterproof sealing structure to solve the above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

To prior art not enough, the utility model provides a motor waterproof sealing structure, possess advantages such as motor wiring end cover waterproof performance is strong and the security performance is high, chinese patent publication is CN 206195527U's an increase an ampere of type high protection level oil field top drive motor terminal box has been solved, it possesses essential waterproof performance, as shown in fig. 1, nevertheless it utilizes the bolt to pass casing and cap, and seal between casing and cap through following bolt axial extrusion gasket, because the outer wall cylinder of bolt is must to have certain fit clearance with casing and cap and sealed the pad in bolt and casing and sealed installation, if the motor soaks under water, then it can't avoid water to get into inside the motor along bolt fit clearance completely and cause the poor and potential safety hazard's problem of this motor waterproof performance.

(II) technical scheme

For realizing the purpose that above-mentioned motor wiring end cover waterproof performance is strong and the security performance is high, the utility model provides a following technical scheme: the utility model provides a motor waterproof sealing structure, which comprises a motor body, the last line hole of having seted up of motor body, the peripheral screw thread through-hole that just is located the line hole has been seted up on the motor body, still include the line box, the last line box that communicates with the line hole that is provided with of motor body, be provided with first sealing washer between line box and the motor body, the inner wall bottom of line box is provided with the first screw that runs through line box and first sealing washer and extend to the screw thread through-hole, the top of line box is provided with the socket, be provided with the second sealing washer between socket and the line box, be provided with the second screw that runs through socket and second sealing washer and extend to the line box on the socket, the threaded blind hole with second screw looks adaptation is seted up to the incasement, be provided with on the socket and extend to the line box and the face of cylinder that offsets with line box and second sealing washer inner wall and hold.

Preferably, the socket includes binding post and spacing arch, binding post sets up in the top of line box, binding post's outer wall is provided with the face of cylinder that offsets with line box inner wall and hold, the second sealing washer has been cup jointed between binding post and the line box, the inner wall and the face of cylinder of second sealing washer offset and hold, the second screw runs through binding post and second sealing washer and extends to in the screw blind hole, the last periphery that just is located the second sealing washer of binding post is provided with the spacing arch that offsets and hold with the line box, spacing arch is used for limiting the interval between line box and the binding post and cooperates binding post and line box to wrap up the second sealing washer.

Preferably, the second sealing ring comprises a flange portion and a hollow cone portion, the flange portion is arranged between the socket and the wire box, a through hole matched with the second screw is formed in the flange portion, the hollow cone portion is arranged on one side, close to the wire box, of the flange portion, the inner wall of the hollow cone portion abuts against the cylindrical surface, and a conical surface coaxial with the hollow cone portion is formed on one side, close to the socket, of the wire box.

(III) advantageous effects

Compared with the prior art, the utility model provides a motor waterproof sealing structure possesses following beneficial effect:

1. the motor waterproof sealing structure drives the wire box to extrude a first sealing ring and preliminarily seal the wire box on the motor body through the first screw, the first screw is arranged in the wire box, so that an assembly clearance hole between the first screw and the motor body is positioned in the wire box, the situation that external water enters the motor body from the assembly clearance of the first screw to cause poor waterproof performance and safety performance of the motor is preliminarily avoided, the second screw drives the socket to extrude a second sealing ring and seals the wire box and the socket, the second screw is matched with a threaded blind hole on the wire box for use, so that the condition that the assembly clearance of the second screw is communicated with the inside of the wire box is blocked, the situation that the water flows into the motor body from the assembly clearance of the second screw to cause poor waterproof performance and safety performance of the motor is avoided, meanwhile, the cylindrical surface on the socket is abutted against the inner wall of the wire box, the situation that the second sealing ring is deformed unevenly stressed to influence the poor waterproof performance and safety performance of the motor when the socket is inserted into the wire box and the second screw is tightened is avoided, and the effect that the waterproof performance of the motor wiring end cover is strong and the safety performance is high is achieved;

2. according to the waterproof sealing structure of the motor, the socket is matched with the connecting terminal and the limiting bulge for use, so that the mounting space between the socket and the wire box is limited, the situation that the motor is poor in waterproof performance and high in safety performance due to the fact that the second sealing ring is easy to age, deform and damage when the second screw drives the connecting terminal and the wire box to extrude a second sealing ring in the process that the second sealing ring is stressed too much is avoided, meanwhile, the second sealing ring is wrapped through the limiting bulge matched with the connecting terminal and the wire box, the situation that the second sealing ring is easy to age due to contact with the external environment is avoided, the protection performance of the second sealing ring is further improved, and the effects of strong waterproof performance and high safety performance of a motor connecting end cover are achieved;

3. the second sealing ring is matched with the hollow cone portion to be used, and the thread box is provided with the conical surface, so that the conical surface can be conveniently and quickly led into the thread box in the assembling process of the socket and the thread box, the assembling precision and the assembling efficiency of the waterproof sealing structure are improved, meanwhile, the second screw drives the socket and the thread box to be close to each other and extrude the flange portion of the second sealing ring along the axial direction of the cylindrical surface, the hollow cone portion on the second sealing ring generates radial extrusion acting force under the action of the cylindrical surface and the conical surface, the second sealing ring is further enabled to seal the socket and the thread box more tightly, and the effects of strong waterproof performance and high safety performance of the motor connecting end cover are achieved.

Drawings

FIG. 1 is a schematic structural diagram of a terminal box of an increased safety type high protection level oilfield top drive motor in the background art;

fig. 2 is a schematic structural view of a waterproof sealing structure of a motor provided by the utility model;

FIG. 3 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 2;

fig. 4 is an enlarged view of a portion a in fig. 3.

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 in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, a waterproof and sealing structure for a motor, including a motor body 10, a wire hole 11 for installing a wire harness is opened on the motor body 10, threaded through holes 12 are opened on the periphery of the wire hole 11 on the motor body 10, the number of the threaded through holes 12 is four, four threaded through holes 12 are respectively arranged on the periphery of the wire hole 11 in a rectangular array, the threaded through holes 12 are used for matching with the wire hole 11 to connect the motor body 10 and install an external sealing structure, a conventional technical scheme generally adopts a bolt or a screw to drive the sealing structure and a sealing washer to be directly and fixedly connected with the motor body 10, but because the outer wall cylindrical surface of the bolt or the screw must have a certain assembly gap with a shell, a shell cover and a sealing washer during the installation of the bolt or the screw and the motor body 10 and the sealing washer, if the motor is immersed under water, the motor cannot completely avoid the situation that water enters the interior of the motor along the bolt assembly gap to cause poor waterproof performance and potential safety hazard, as shown in fig. 1, the technical scheme also includes a wire box 2, the first sealing ring 3 is movably installed on the motor body 10 and the motor body 2, thereby the first sealing box 2 prevents the first sealing ring from penetrating the first wire box 2 and the motor body 4, thereby the first sealing box 2 from extruding the first sealing ring 3, the first sealing box 2, and the motor body 4, meanwhile, the technical scheme also adopts the structure that the top of the wire box 2 is movably provided with a socket 5, a second sealing ring 6 is movably arranged between the socket 5 and the wire box 2, a second screw 7 which penetrates through the socket 5 and the second sealing ring 6 and extends into the wire box 2 is movably arranged on the socket 5, a threaded blind hole 8 matched with the second screw 7 is formed in the wire box 2, the number of the second screw 7 and the threaded blind hole 8 is four, the socket 5 is provided with a cylindrical surface 9 which extends into the wire box 2 and is abutted against the inner walls of the wire box 2 and the second sealing ring 6, the socket 5 and the wire box 2 are driven by the second screw 7 to extrude the second sealing ring 6 and seal the sections of the socket 5 and the wire box 2, meanwhile, the threaded blind hole 8 on the wire box 2 is matched with the second screw 7 for use, so as to block the assembly gap of the second screw 7 from being communicated with the inside of the wire box 2, the situation that the waterproof performance and the safety performance of the motor are poor due to the fact that water flows into the motor body 10 from the assembly gap of the second screw 7 from the socket 5 is prevented from flowing into the motor body 10, and the problem that the waterproof performance of the second screw 7 is improved when the waterproof motor is not influenced by the traditional waterproof motor body 10, the waterproof motor is solved, the waterproof performance of the waterproof motor body of the waterproof motor 2, the waterproof motor body is improved by the waterproof motor which is improved by the waterproof sealing ring 9 and the waterproof motor 2, and the waterproof motor body 10, and the waterproof motor body 7, the waterproof motor is improved by the waterproof motor body of the waterproof motor when the waterproof motor body of the waterproof motor 2, the waterproof motor body 4 which is additionally arranged on the waterproof motor, the waterproof motor body 4, the effects of strong waterproof performance and high safety performance of the motor wiring end cover are achieved.

Preferably, the socket 5 includes a connection terminal 51 and a limiting protrusion 52, the connection terminal 51 is movably mounted at the top of the wire box 2, the outer wall of the connection terminal 51 is provided with a cylindrical surface 9 abutting against the inner wall of the wire box 2, a second seal ring 6 is movably mounted between the connection terminal 51 and the wire box 2, the second seal ring 6 is sleeved outside the cylindrical surface 9, a second screw 7 penetrating through the connection terminal 51 and the second seal ring 6 and extending into the threaded blind hole 8 is movably mounted on the connection terminal 51, the limiting protrusion 52 abutting against the wire box 2 is fixedly mounted on the connection terminal 51 and located at the periphery of the second seal ring 6, the limiting protrusion 52 is annular, the distance between the wire box 2 and the connection terminal 51 is limited by the limiting protrusion 52, so that the second screw 7 is prevented from driving the connection terminal 51 and the wire box 2 to extrude the second seal ring 6, the second sealing ring 6 is stressed too much and is easy to age, deform and damage to cause the situation of poor waterproof performance and high safety performance of the motor, meanwhile, the limiting bulge 52 is in a circular ring shape and is matched with the wiring terminal 51 and the wire box 2 to wrap the second sealing ring 6, so that the second sealing ring 6 is prevented from aging (the sealing gasket is heated, oxygen and ozone in the air, sunlight, wind, rain, snow, moisture and various mechanical stress effects in the using process or corrosion of chemical solvents, the chemical structure of rubber is damaged, the rubber becomes hard and soft or hard and brittle, the surface is rough, the mechanical performance is reduced, and the use value is gradually lost along with the time lapse), the protective performance of the second sealing ring 6 is further improved, and the effects of strong waterproof performance and high safety performance of the motor wiring end cover are realized.

Preferably, the second sealing ring 6 comprises a flange part 61 and a hollow cone part 62, the flange part 61 is movably mounted between the socket 5 and the wire box 2, the inner wall of the flange part 61 abuts against the outer side of the cylindrical surface 9, a through hole matched with the second screw 7 is formed in the flange part 61, the hollow cone part 62 is fixedly mounted on one side, close to the wire box 2, of the flange part 61, the flange part 61 and the hollow cone part 62 can be of an integrated structure, the inner wall of the hollow cone part 62 abuts against the outer side of the cylindrical surface 9, and a conical surface 21 coaxial with the hollow cone part 62 is formed on one side, close to the socket 5, of the wire box 2; the cross-section that is close to socket 5 one end and the inner wall side of line box 2 to line box 2 are passed through to conical surface 21 on the line box 2, thereby make socket 5 and line box 2 when the assembly, it is convenient for assemble socket 5 and line box 2 fast to lead to carry out through conical surface 21, avoid the face of cylinder 9 in the line box 2 inner wall and the socket 5 outside to have the position in the installation, angle error and influence installation effectiveness, drive socket 5 and line box 2 through second screw 7 simultaneously and be close to each other and along the face of cylinder 9 axial extrusion second sealing washer 6 on flange portion 61's in-process, make hollow cone portion 62 on second sealing washer 6 produce radial extrusion effort under the effect of face of cylinder 9 and conical surface 21, further make second sealing washer 6 sealed more tight with line box 2, reach the effect that motor terminal cover waterproof performance is strong and security performance.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (3)

1. The utility model provides a motor waterproof sealing structure, includes motor body (10), has seted up line hole (11) on motor body (10), and motor body (10) are gone up and are located the periphery in line hole (11) and seted up screw thread through-hole (12), its characterized in that: the novel motor is characterized by further comprising a wire box (2), a wire box (2) communicated with the wire hole (11) is arranged on the motor body (10), a first sealing ring (3) is arranged between the wire box (2) and the motor body (10), a first screw (4) penetrating through the wire box (2) and the first sealing ring (3) and extending into the threaded through hole (12) is arranged at the bottom of the inner wall of the wire box (2), a socket (5) is arranged at the top of the wire box (2), a second sealing ring (6) is arranged between the socket (5) and the wire box (2), a second screw (7) penetrating through the socket (5) and the second sealing ring (6) and extending into the wire box (2) is arranged on the socket (5), a threaded blind hole (8) matched with the second screw (7) is formed in the wire box (2), and a cylindrical surface (9) extending into the wire box (2) and abutting against the inner wall of the wire box (2) and the second sealing ring (6) is arranged on the socket (5).

2. The waterproof sealing structure of the motor according to claim 1, wherein: socket (5) include binding post (51) and spacing arch (52), binding post (51) set up in the top of line box (2), the outer wall of binding post (51) is provided with face of cylinder (9) that support with line box (2) inner wall counterbalance, second sealing washer (6) have been cup jointed between binding post (51) and line box (2), the inner wall and the face of cylinder (9) counterbalance of second sealing washer (6), second screw (7) run through binding post (51) and second sealing washer (6) and extend to in screw blind hole (8), binding post (51) are gone up and the periphery that is located second sealing washer (6) is provided with spacing arch (52) that support with line box (2), spacing arch (52) are used for limiting the interval between line box (2) and binding post (51) and cooperate binding post (51) and line box (2) to wrap up second sealing washer (6).

3. The waterproof sealing structure of the motor according to claim 1 or 2, wherein: the second sealing ring (6) comprises a flange part (61) and a hollow cone part (62), the flange part (61) is arranged between the socket (5) and the wire box (2), a through hole matched with the second screw (7) is formed in the flange part (61), the hollow cone part (62) is arranged on one side, close to the wire box (2), of the flange part (61), the inner wall of the hollow cone part (62) is abutted to the cylindrical surface (9), and the conical surface (21) coaxial with the hollow cone part (62) is formed on one side, close to the socket (5), of the wire box (2).

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