Motor outgoing line sealing structure

Abstract

The utility model relates to the technical field of motor outgoing line sealing, and discloses a motor outgoing line sealing structure, which comprises an end cover, a metal pressing sleeve is slidably connected in a hole formed in the end cover, an outgoing line is arranged in the end cover, a rubber sleeve is sleeved on the outer wall of the outgoing line, and the outer wall of the rubber sleeve is slidably connected in the metal pressing sleeve. According to the utility model, through cooperation among the outgoing line, the metal pressing sleeve, the rubber sleeve and the end cover, an effect of sealing the interior of the motor is achieved, a better protection guarantee is provided, simplified design, simpler assembly, lower cost and stronger sealing effect of the outgoing line are realized, and the problem that the rubber ring shakes when the outgoing line swings is solved. Therefore, the sealing performance of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motor outlet sealing, in particular to a motor outlet sealing structure. Background Art

[0002] As an electric mechanical device, the motor is an important device that converts electrical energy into mechanical energy. It works based on the interaction between the magnetic field generated by the current passing through the wire and the external magnetic field. This interaction causes the conductor to be acted upon by force, thereby generating mechanical movement. Motors are usually used in industrial and outdoor environments, and sometimes face contact with water, oil or other liquids. If these liquids enter the motor, it may cause a short circuit, damage to electrical components, or even motor failure. Therefore, a good outlet sealing structure can effectively prevent liquid from penetrating into the motor, protecting the stable operation and life of the motor.

[0003] The existing motor outlet sealing structure usually uses a rubber protective ring, and a sealing pressure plate is added on it to press the rubber protective ring. Since the outlet hole is a truncated cone structure, the rubber protective ring can be in close contact with the cable and the inner hole of the casing under the pressure of the sealing pressure plate to achieve a sealing effect. The top of the outlet hole is connected to a countersunk hole, and the aperture of the countersunk hole is larger than the outer diameter of the upper half of the circular ring column of the rubber protective ring. The countersunk hole can accommodate the expanded volume of the rubber protective ring after being compressed, thereby further improving the sealing effect while avoiding a complex structure, making the structure of the small motor more compact.

[0004] However, the existing motor lead-out sealing structure has many structural parts, and the assembly is complicated and costly, and the sealing section is short. If the lead-out line is in an active and swinging state, the waterproof effect may fail. The rubber sleeve is tightened through a taper, but there is a step on it that prevents the rubber ring from tightening downward, which will cause the rubber ring and the lead-out line to not fit completely, thereby causing water leakage. Therefore, a motor lead-out sealing structure is proposed to solve the above problems. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a motor lead-out sealing structure, aiming to improve the problem in the prior art that the rubber ring and the lead-out wire cannot be completely fitted together, resulting in water leakage.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A motor lead-out sealing structure, comprising an end cover, a metal compression sleeve slidably connected to a hole in the end cover, a lead-out wire is arranged inside the end cover, a rubber sleeve is arranged on the outer wall of the lead-out wire, and the outer wall of the rubber sleeve is slidably connected to the inside of the metal compression sleeve;

[0008] As a further description of the above technical solution:

[0009] The inside of the rubber sleeve is attached to the outer wall of the lead-out wire;

[0010] As a further description of the above technical solution:

[0011] Both ends of the rubber sleeve are in a cone shape;

[0012] As a further description of the above technical solution:

[0013] The interior of the metal pressing sleeve is opened into a cone shape;

[0014] As a further description of the above technical solution:

[0015] The interior of the metal compression sleeve is fitted on the outer wall of the rubber sleeve.

[0016] The utility model has the following beneficial effects:

[0017] In the utility model, the cooperation among the lead wire, the metal compression sleeve, the rubber sleeve and the end cover achieves the effect of sealing the inside of the motor, and at the same time has better protection guarantee, and at the same time realizes the simplified design of the lead wire result, which is simpler to assemble, has lower cost and stronger sealing effect, solves the problem of loose sealing caused by the shaking of the rubber ring when the lead wire swings, and improves the sealing performance of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a three-dimensional schematic diagram of a motor outlet sealing structure proposed by the utility model;

[0019] Figure 2 This is a structural schematic diagram of an end cover of a motor outlet sealing structure proposed by the utility model;

[0020] Figure 3 The utility model is a schematic structural diagram of a metal compression sleeve of a motor outlet sealing structure.

[0021] Legend:

[0022] 1. Lead wire; 2. Metal sleeve; 3. Rubber sleeve; 4. End cover. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Reference Figure 1-Figure 3The utility model provides an embodiment: a motor lead-out sealing structure, comprising an end cover 4, a metal pressing sleeve 2 is slidably connected to a hole opened inside the end cover 4, a lead-out wire 1 is arranged inside the end cover 4, a rubber sleeve 3 is provided on the outer wall of the lead-out wire 1, the outer wall of the rubber sleeve 3 is slidably connected to the inside of the metal pressing sleeve 2, the outer wall of the metal pressing sleeve 2 is slidably connected to the inside of the end cover 4, the inside of the rubber sleeve 3 is fitted on the outer wall of the lead-out wire 1, both ends of the rubber sleeve 3 are conical, the inside of the metal pressing sleeve 2 is opened in a conical shape, and the inside of the metal pressing sleeve 2 is fitted on the outer wall of the rubber sleeve 3.

[0025] Specifically, the rubber sleeve 3 is sleeved on the outer wall of the lead wire 1, and then it is placed in the end cover 4, and then the metal sleeve 2 is used to extrude and seal it. The interference fit between the metal sleeve 2 and the end cover 4 eliminates the original screw fixing parts, reduces the cost, and at the same time lengthens the sealing section length, and the metal sleeve 2 is axially fixed to ensure that the lead wire 1 is still well protected in the swinging state. At the same time, the two-way taper design makes the sealing ring and the lead wire 1 more tightly combined. Compared with the waterproof gland, which requires a wrench to tighten and control the torque, the assembly method of this device is simpler. The metal sleeve 2 can be directly pressed into the wire outlet hole of the end cover 4 by interference, which greatly improves the assembly efficiency. In addition, the overall structure is simple, the volume is smaller, and the wire outlet space is also smaller, which can support thicker lead wires 1. Only a simple metal sleeve 2 needs to be processed and a simple rubber sleeve 3 mold needs to be opened, which greatly reduces the wire outlet cost.

[0026] Working principle: The rubber sleeve 3 is put on the lead-out wire 1, and then installed into the tapered hole on the end cover 4 together, and then the metal pressing sleeve 2 is put on the rubber sleeve 3 and pressed into the end cover 4 through interference fit. The two cone angles of the rubber sleeve 3 pass through, and the tapered hole of the end cover 4 and the tapered hole of the metal pressing sleeve 2 are squeezed on both sides and gathered towards the middle, so that the rubber sleeve 3 fits the lead-out wire 1 to achieve sealing and waterproofing.

[0027] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A motor outlet sealing structure, comprising an end cover (4), characterized in that: A metal pressing sleeve (2) is slidably connected to a hole provided inside the end cover (4), a lead wire (1) is provided inside the end cover (4), a rubber sleeve (3) is provided on the outer wall of the lead wire (1), and the outer wall of the rubber sleeve (3) is slidably connected to the inside of the metal pressing sleeve (2).

2. A motor outlet sealing structure according to claim 1, characterized in that: The inside of the rubber sleeve (3) is fitted onto the outer wall of the lead-out wire (1).

3. A motor outlet sealing structure according to claim 2, characterized in that: Both ends of the rubber sleeve (3) are in a cone shape.

4. A motor outlet sealing structure according to claim 3, characterized in that: The interior of the metal pressing sleeve (2) is opened in a cone shape.

5. A motor outlet sealing structure according to claim 4, characterized in that: The interior of the metal pressing sleeve (2) is fitted onto the outer wall of the rubber sleeve (3).

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