A motor lead-out terminal sealing device and a motor

Abstract

The present invention discloses a motor lead-out end sealing device and a motor. The motor lead-out end sealing device includes: an insulating sleeve sleeved with an outlet hole of the motor housing, which is provided with a wire passing hole for the motor lead-out end to pass through; a first sealing structure arranged between the insulating sleeve and the motor housing; a second sealing structure arranged between the insulating sleeve and the motor lead-out end, and at least one of the first sealing structure and the second sealing structure is detachable. An insulating sleeve is arranged between the motor housing and the motor lead-out end, and through the first sealing structure and the second sealing structure, the sealing performance of the connection between the insulating sleeve and the motor housing and the motor lead-out end respectively is ensured, and the leakage of the internal cooling liquid of the motor is avoided. By disassembling the first sealing structure and / or the second sealing structure, the separation of the motor lead-out end from the motor housing can be finally realized, which is convenient for the later maintenance of the motor lead-out end. The motor includes the above-mentioned motor lead-out end sealing device and has the above-mentioned beneficial effects.

Description

Technical Field

[0001] The present invention relates to the technical field of motor sealing devices, and more specifically, to a motor outlet terminal sealing device. In addition, the present invention also relates to a motor comprising the motor outlet terminal sealing device. Background Art

[0002] In order to prevent leakage of cooling liquid inside the motor, it is usually necessary to seal the motor outlet terminal with the motor housing so as to seal the cooling liquid in the motor housing.

[0003] In the prior art, the connection between the motor output terminal and the motor housing is generally achieved by means of glue injection. After the sealant is cured, the motor output terminal and the motor housing are fixedly connected as one, and the two cannot be separated.

[0004] However, this fixed and non-detachable sealing connection method is inconvenient to operate during connection, and requires waiting for the injected glue to solidify. The installation period is long, that is, it is not convenient for early installation and later maintenance.

[0005] Therefore, how to provide a sealing device for the motor outlet terminal to facilitate early installation and later maintenance is a problem that urgently needs to be solved by those skilled in the art. Summary of the invention

[0006] In view of this, an object of the present invention is to provide a sealing device for a motor outlet terminal, which is convenient for early installation and later maintenance.

[0007] Another object of the present invention is to provide a motor including the above-mentioned motor outlet terminal sealing device, which is convenient for maintaining the motor outlet terminal.

[0008] In order to achieve the above object, the present invention provides the following technical solutions:

[0009] A sealing device for a motor outlet terminal, comprising:

[0010] An insulating sleeve used for sleeve connection with the outlet hole of the motor housing, which is provided with a threading hole for the outlet end of the motor to pass through;

[0011] A first sealing structure provided between the insulating sleeve and the motor housing;

[0012] A second sealing structure is provided between the insulating sleeve and the motor output terminal, and at least one of the first sealing structure and the second sealing structure is detachable.

[0013] Preferably, the first sealing structure comprises:

[0014] A first sealing body sleeved on the outer periphery of the insulating sleeve and having elasticity;

[0015] The first fastener pressed on the first seal body is fixedly connected to the insulating sleeve or the motor housing. After the first seal body is deformed under the extrusion of the first fastener, it is respectively in close contact with the outer peripheral part of the insulating sleeve and the end face of the motor housing.

[0016] Preferably, the first fastener is sleeved on the outer peripheral part of the insulating sleeve and is threadedly connected to the insulating sleeve.

[0017] Preferably, a first pressing ring is provided between the first seal body and the first fastener.

[0018] Preferably, a first sunk groove is provided on one side of the motor housing facing the outside of the motor, and the first seal body is embedded in the first sunk groove.

[0019] Preferably, one end of the first fastener facing the motor housing is stepped, and it includes a first extending part for extending into the first sunk groove and a first fitting part for lapping with the end face of the motor housing.

[0020] Preferably, the first sealing structure and the second sealing structure have the same structure.

[0021] Preferably, a first stop is provided at one end of the insulating sleeve facing the inside of the motor housing for axial limit.

[0022] Preferably, a stepped hole for axially limiting the second stop of the motor lead-out end is provided at one end of the wire passing hole facing the inside of the motor housing.

[0023] A motor includes a motor housing and a motor lead-out end, and the two are hermetically connected through a sealing structure, and the sealing structure is any one of the above-mentioned motor lead-out end sealing devices.

[0024] The motor lead-out end sealing device provided by the present invention sets an insulating sleeve between the motor housing and the motor lead-out end, and ensures the sealing between the insulating sleeve and the motor housing through the first sealing structure, and ensures the sealing between the insulating sleeve and the motor lead-out end through the second sealing structure. Finally, the sealed connection between the motor lead-out end and the motor housing can be realized, and the leakage of the cooling liquid inside the motor can be avoided.

[0025] In addition, since at least one of the first sealing structure and the second sealing structure is detachable, therefore, by detaching the first sealing structure and / or the second sealing structure, the separation between the motor lead-out end and the motor housing can be finally realized, which is convenient for later maintenance of the motor lead-out end.

[0026] In addition, during installation, through the assembly of the first sealing structure and / or the second sealing structure, the sealed connection is realized, avoiding the potting operation and without waiting for the glue to cure, etc., so it is convenient for the preliminary installation.

[0027] The motor provided by the present invention includes the above-mentioned motor lead-out terminal sealing device. While realizing the sealed connection between the motor lead-out terminal and the motor housing, it can separate the motor lead-out terminal from the motor housing, facilitating the later maintenance of the motor lead-out terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0029] Figure 1 It is a cross-sectional view of the motor lead-out terminal sealing device provided by a specific embodiment of the present invention.

[0030] Figure 1 The reference numerals in

[0031] 1 is the motor housing, 2 is the insulating sleeve, 21 is the first rabbet, 3 is the motor lead-out terminal, 31 is the second rabbet, 41 is the first sealing body, 42 is the first fastener, 43 is the first pressing ring, 51 is the second sealing body, 52 is the second fastener, 53 is the second pressing ring, and 6 is the motor lead wire. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0033] The core of the present invention is to provide a motor lead-out terminal sealing device, which is convenient for later maintenance. Another core of the present invention is to provide a motor including the above-mentioned motor lead-out terminal sealing device, which is convenient for maintaining the motor lead-out terminal.

[0034] Please refer to Figure 1 , which is a cross-sectional view of the motor lead-out terminal sealing device provided by a specific embodiment of the present invention.

[0035] The present invention provides a motor lead-out terminal sealing device, which mainly includes an insulating sleeve 2, a first sealing structure, and a second sealing structure.

[0036] Specifically, the insulating sleeve 2 is used to be sleeved on the wire outlet hole of the motor housing 1. At the same time, the insulating sleeve 2 is provided with a wire passing hole for the motor lead-out terminal 3 to pass through.

[0037] That is to say, the present invention utilizes the transfer function of the insulating sleeve 2. By arranging the insulating sleeve 2 between the motor housing 1 and the motor lead-out end 3, an indirect connection is achieved between the motor lead-out end 3 and the motor housing 1.

[0038] After assembly, the insulating sleeve 2 is assembled in the wire outlet hole of the motor housing 1, and the motor lead-out end 3 is assembled in the wire passing hole of the insulating sleeve 2.

[0039] The first sealing structure is provided between the insulating sleeve 2 and the motor housing 1 to ensure the sealing performance between the insulating sleeve 2 and the motor housing 1.

[0040] The second sealing structure is provided between the insulating sleeve 2 and the motor lead-out end 3 to ensure the sealing performance between the insulating sleeve 2 and the motor lead-out end 3.

[0041] That is, the present invention ensures the sealing performance of the connections between the insulating sleeve 2 and the motor housing 1 and the motor lead-out end 3 respectively through the first sealing structure and the second sealing structure, and finally realizes the sealing between the motor lead-out end 3 and the motor housing 1, avoiding the leakage of the cooling liquid inside the motor.

[0042] In addition, at least one of the first sealing structure and the second sealing structure is detachable.

[0043] It can be understood that by disassembling the first sealing structure, the separation of the insulating sleeve 2 from the motor housing 1 can be achieved; by disassembling the second sealing structure, the separation of the insulating sleeve 2 from the motor lead-out end 3 can be achieved; therefore, by disassembling the first sealing structure and / or the second sealing structure, the separation of the motor lead-out end 3 from the motor housing 1 can be finally achieved, facilitating the later maintenance of the motor lead-out end 3.

[0044] It should be noted that, as the name implies, the insulating sleeve 2 has insulating properties and belongs to insulating materials, so as to ensure good electrical insulation properties of the motor lead-out end 3.

[0045] In addition, it should be noted that the present invention does not limit the specific structure of the first sealing structure, as long as the sealing effect between the insulating sleeve 2 and the motor housing 1 can be achieved.

[0046] As a preferred solution, on the basis of the above embodiment, the first sealing structure includes a first sealing body 41 and a first fastener 42.

[0047] Specifically, the first sealing body 41 is sleeved on the outer peripheral part of the insulating sleeve 2 and has elasticity itself. The first fastener 42 is pressed on the first sealing body 41 to generate an extrusion force on the first sealing body 41, and the first fastener 42 is fixedly connected to the insulating sleeve 2 or the motor housing 1.

[0048] After the first fastener 42 is fixedly connected to the insulating sleeve 2 or the motor housing 1, it exerts extrusion on the first seal 41. Under the extrusion of the first fastener 42, the first seal 41 deforms. After the deformation of the first seal 41, it is respectively in close contact with the outer peripheral part of the insulating sleeve 2 and the end face of the motor housing 1 to achieve sealing.

[0049] That is to say, the first sealing structure realizes the sealing between the insulating sleeve 2 and the motor housing 1 through the deformation of the first seal 41 under pressure.

[0050] It should be noted that the specific fixing method of the first fastener 42 in this embodiment is not limited, as long as the first fastener 42 can be fixed to exert an extrusion force on the first seal 41.

[0051] Preferably, on the basis of the above embodiment, the first fastener 42 is sleeved on the outer peripheral part of the insulating sleeve 2 and is threadedly connected to the insulating sleeve 2.

[0052] That is to say, in this embodiment, the threaded connection between the first fastener 42 and the insulating sleeve 2 applies an axial pre-tightening force to the first seal 41, causing the first seal 41 to deform and pressing the outer peripheral part of the insulating sleeve 2 and the end face of the motor housing 1.

[0053] Furthermore, in order to prevent damage to the first seal 41 when disassembling and assembling the first fastener 42, on the basis of the above embodiment, a first pressing ring 43 is provided between the first seal 41 and the first fastener 42.

[0054] It can be understood that during the tightening process of the first fastener 42, the first pressing ring 43 can prevent the end of the first fastener 42 from directly acting on the first seal 41, generating frictional force on the first seal 41 and causing damage to the first seal 41.

[0055] After the first fastener 42 is tightened, the extrusion force is transmitted to the first seal 41 through the first pressing ring 43.

[0056] In addition, in order to improve the sealing effect, on the basis of the above embodiment, a first sink is provided on the side of the motor housing 1 facing the outside of the motor, and the first seal 41 is embedded in the first sink.

[0057] It can be understood that due to the limitation of the side wall of the first sink, when the first seal 41 is extruded, the first seal 41 is respectively in close contact with the outer peripheral part of the insulating sleeve 2, the bottom of the first sink and the inner side wall of the first sink, increasing the contact area between the first seal 41 and the motor housing 1, thus improving the sealing effect between the insulating sleeve 2 and the motor housing 1.

[0058] Further, in order to better apply an extrusion force to the first seal 41, on the basis of the above embodiment, one end of the first fastener 42 facing the motor housing 1 is stepped, including a first insertion portion for extending into the first sunk groove and a first fitting portion for lapping with the end face of the motor housing 1.

[0059] It can be understood that when the first fastener 42 is fixed, the first insertion portion extends into the first sunk groove to generate an extrusion force on the first seal 41, and the extrusion effect is good; at the same time, by using the lapping of the first fitting portion with the end face of the motor housing 1, it can play a role in axially limiting the first fastener 42 and facilitate the quick positioning during the installation of the first fastener 42.

[0060] In addition, the present invention does not limit the specific structure of the second sealing structure, as long as the sealing effect between the insulating sleeve 2 and the motor lead-out end 3 can be achieved.

[0061] As a preferred solution, on the basis of the above embodiment, the structures of the first sealing structure and the second sealing structure are the same.

[0062] As Figure 1 shown, the second sealing structure includes a second seal 51 and a second fastener 52.

[0063] Specifically, the second seal 51 is sleeved on the outer peripheral portion of the motor lead-out end 3 and has elasticity itself. The second fastener 52 is pressed on the second seal 51 to generate an extrusion force on the second seal 51, and the second fastener 52 is fixedly connected to the insulating sleeve 2 or the motor lead-out end 3.

[0064] After the second fastener 52 is fixedly connected to the insulating sleeve 2 or the motor lead-out end 3, it generates an extrusion on the second seal 51. Under the extrusion of the second fastener 52, the second seal 51 deforms. After the second seal 51 deforms, it respectively fits and contacts with the end face of the insulating sleeve 2 and the outer peripheral portion of the motor lead-out end 3 to achieve sealing.

[0065] That is to say, the second sealing structure realizes the sealing between the insulating sleeve 2 and the motor lead-out end 3 through the deformation of the second seal 51 under pressure.

[0066] Considering the specific fixing method of the second fastener 52, on the basis of the above embodiment, the second fastener 52 is sleeved on the outer peripheral portion of the motor lead-out end 3 and is threadedly connected to the motor lead-out end 3.

[0067] That is to say, in this embodiment, the second fastener 52 is threadedly connected to the motor lead-out end 3 to apply an axial pre-tightening force to the second seal 51, causing the second seal 51 to deform and pressing the end face of the insulating sleeve 2 and the outer peripheral portion of the motor lead-out end 3.

[0068] Further, in order to prevent damage to the second seal body 51 when disassembling and assembling the second fastener 52, on the basis of the above embodiment, a second pressing ring 53 is provided between the second seal body 51 and the second fastener 52.

[0069] After the second fastener 52 is tightened, the extrusion force is transmitted to the second seal body 51 through the second pressing ring 53.

[0070] In addition, in order to improve the sealing effect, on the basis of the above embodiment, a second sink is provided on the side of the insulating sleeve 2 facing the outside of the motor, and the second seal body 51 is embedded in the second sink.

[0071] It can be understood that due to the limitation of the side wall of the second sink, when the second seal body 51 is extruded, the second seal body 51 is respectively in contact with the outer peripheral portion of the motor lead-out end 3, the bottom of the second sink and the inner side wall of the second sink, increasing the contact area between the second seal body 51 and the insulating sleeve 2, and thus improving the sealing effect between the insulating sleeve 2 and the motor lead-out end 3.

[0072] Further, in order to better apply an extrusion force to the second seal body 51, on the basis of the above embodiment, one end of the second fastener 52 facing the insulating sleeve 2 is stepped, including a second insertion portion for extending into the second sink and a second fitting portion for lapping with the end face of the motor housing 1.

[0073] It can be understood that when the second fastener 52 is fixed, the second insertion portion extends into the second sink to generate an extrusion force on the second seal body 51, and the extrusion effect is good; at the same time, by using the lapping of the second fitting portion and the end face of the insulating sleeve 2, the axial limit of the second fastener 52 can be achieved, and the quick positioning during the installation of the second fastener 52 can be utilized.

[0074] On this basis, as Figure 1 shown, preferably, the second fitting portion extends radially outward to lap with the end face of the first fastener 42 to improve the stability of the axial limit of the second fastener 52.

[0075] Considering the axial limit problem of the insulating sleeve 2 when the insulating sleeve 2 and the motor housing 1 are assembled, on the basis of the above embodiment, a first stop 21 for axial limit is provided at one end of the insulating sleeve 2 facing the inside of the motor housing 1.

[0076] That is to say, when installing the insulating sleeve 2, the insulating sleeve 2 is inserted into the lead-out hole from the inside of the motor housing 1 to the outside until the first stop 21 abuts against the notch of the motor housing 1 for cooperating with the first stop 21, which indicates that the insulating sleeve 2 is installed in place.

[0077] Similarly, considering the axial limiting problem of the motor lead-out end 3 when it is assembled with the insulating sleeve 2, on the basis of the above embodiment, a stepped hole for axially limiting the second stop 31 of the motor lead-out end 3 is provided at one end of the wire passing hole facing the inside of the motor housing 1.

[0078] That is to say, the motor lead-out end 3 in this embodiment is provided with a second stop 31. During installation, the motor lead-out end 3 is inserted into the wire passing hole of the insulating sleeve 2 from the inside of the motor to the outside until the second stop 31 is engaged with the stepped hole, indicating that the motor lead-out end 3 and the insulating sleeve 2 are assembled in place.

[0079] It can be understood that the motor lead-out end 3 is fixedly connected to the motor lead 6. Preferably, the motor lead 6 is connected to the motor lead-out end 3 by welding methods such as brazing to achieve power transmission.

[0080] It should be noted that in the above various embodiments, the inside of the motor refers to the part Figure 1 below the motor housing 1, and the outside of the motor refers to the part Figure 1 above the motor housing 1.

[0081] In addition to the above motor lead-out end sealing device, the present invention also provides a motor, which includes a motor housing 1 and a motor lead-out end 3, and the two are hermetically connected through a sealing structure, which is the motor lead-out end sealing device disclosed in the above embodiment. For the structures of other parts of the motor, please refer to the prior art and will not be elaborated herein.

[0082] It should also be noted that in this specification, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

[0083] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referred to each other.

[0084] The above has introduced in detail the motor lead-out end sealing device and the motor provided by the present invention. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A sealing device for the motor lead-out end, characterized in that, Comprising: An insulating sleeve (2) for sleeving with the wire outlet hole of the motor housing (1), which is provided with a wire passing hole for the motor wire outlet end (3) to pass through; A first sealing structure provided between the insulating sleeve (2) and the motor housing (1); A second sealing structure provided between the insulating sleeve (2) and the motor wire outlet end (3), at least one of the first sealing structure and the second sealing structure is detachable; The first sealing structure includes: A first sealing body (41) sleeved on the outer peripheral part of the insulating sleeve (2), which has elasticity; A first fastener (42) pressed on the first sealing body (41), which is fixedly connected with the insulating sleeve (2) or the motor housing (1). After the first sealing body (41) is deformed under the extrusion of the first fastener (42), it is respectively in close contact with the outer peripheral part of the insulating sleeve (2) and the end face of the motor housing (1); A first pressing ring (43) is provided between the first sealing body (41) and the first fastener (42); The second sealing structure includes a second sealing body (51) and a second fastener (52). A second sink is provided on one side of the insulating sleeve (2) facing the outside of the motor. The second sealing body (51) is embedded in the second sink. One end of the second fastener (52) facing the insulating sleeve (2) is stepped, including a second extending part for extending into the second sink and a second fitting part for lapping with the end face of the insulating sleeve (2). The second fitting part extends radially outward to lap with the end face of the first fastener (42).

2. The motor lead-out terminal sealing device according to claim 1, wherein, The first fastener (42) is sleeved on the outer peripheral part of the insulating sleeve (2) and is threadedly connected with the insulating sleeve (2).

3. The motor lead-out terminal sealing device according to claim 1, characterized in that, A first sink is provided on one side of the motor housing (1) facing the outside of the motor. The first sealing body (41) is embedded in the first sink.

4. The motor lead-out terminal sealing device according to claim 3, characterized in that, One end of the first fastener (42) facing the motor housing (1) is stepped, which includes a first extending part for extending into the first sink and a first fitting part for lapping with the end face of the motor housing (1).

5. The motor lead-out terminal sealing device according to any one of claims 1-4, characterized in that, The structures of the first sealing structure and the second sealing structure are the same.

6. The motor lead-out terminal sealing device according to any one of claims 1-4, characterized in that, One end of the insulating sleeve (2) facing the inside of the motor housing (1) is provided with a first stop (21) for axial limit.

7. The motor lead-out terminal sealing device according to claim 6, wherein One end of the wire passing hole facing the inside of the motor housing (1) is provided with a stepped hole for axially limiting the second stop (31) of the motor wire outlet end (3).

8. A motor, comprising a motor housing (1) and a motor outgoing line end (3), which are hermetically connected through a sealing structure, characterized in that, The sealing structure is the motor wire outlet end sealing device according to any one of claims 1-7.

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