Motor outlet terminal sealing device and motor

Abstract

The present invention discloses a motor outlet terminal sealing device and a motor, the motor outlet terminal sealing device includes: a first insulating sleeve for being sleeved with the outlet hole of the motor housing, which is provided with a threading hole for the motor outlet terminal to pass through; a sealing body sleeved on the outer periphery of the motor outlet terminal, which has elasticity; a fastener, which is detachably fixedly connected to the first insulating sleeve or the motor outlet terminal, and after the sealing body is deformed under the extrusion of the fastener, it is in contact with the outer periphery of the motor outlet terminal and the end face of the first insulating sleeve respectively; an elastic compression member provided between the sealing body and the fastener. A detachable sealing structure is formed between the first insulating sleeve and the motor outlet terminal by the sealing body, the elastic compression member and the fastener, which ensures that there is always good sealing between the first insulating sleeve and the motor outlet terminal, while facilitating the maintenance of the motor outlet terminal in the later stage. The motor includes the above-mentioned motor outlet terminal 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 including the motor outlet terminal sealing device. Background Art

[0002] In the prior art, a sealed connection between the motor output terminal and the motor housing is usually achieved by glue filling, so as to seal the cooling liquid in the motor housing and prevent the cooling liquid inside the motor from leaking.

[0003] However, since the motor output terminal is connected to the motor housing by means of glue filling, after the sealant is cured, the motor output terminal and the motor housing will be fixedly connected as one, and the two cannot be separated.

[0004] Obviously, this fixed and non-detachable sealed connection method is not convenient for later maintenance of the motor output terminal; at the same time, the operation is inconvenient during connection, and it is necessary to wait for the injected glue to solidify, and the installation cycle is long, that is, it is not convenient for early installation.

[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 comprising the above-mentioned motor outlet terminal sealing device, which facilitates maintenance of 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] A first insulating sleeve 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 sealing body sleeved on the outer periphery of the motor outlet terminal and having elasticity;

[0012] a fastener for compressing the sealing body, which is detachably fixedly connected to the first insulating sleeve or the motor outlet terminal, and the sealing body, after being deformed by the extrusion of the fastener, is in contact with the outer periphery of the motor outlet terminal and the end surface of the first insulating sleeve respectively;

[0013] An elastic compression member is provided between the sealing body and the fastening member.

[0014] Preferably, the sealing body is provided with an outer conical surface at one end facing the first insulating sleeve, and the first insulating sleeve is provided with an inner conical surface for fitting and contacting with the outer conical surface.

[0015] Preferably, it further comprises a second insulating sleeve sandwiched between the fastener and the elastic compression member, wherein the second insulating sleeve is sleeved on the outer periphery of the motor output terminal.

[0016] Preferably, the second insulating sleeve is provided with a groove for accommodating the elastic compression member.

[0017] Preferably, a compression ring is provided between the elastic compression member and the sealing body.

[0018] Preferably, the sealing body includes an inserting portion for inserting into the groove, and the clamping ring includes:

[0019] a first ring portion sandwiched between the elastic compression member and the end surface of the extending portion;

[0020] A second ring portion is sandwiched between the side wall of the groove and the outer side of the protruding portion.

[0021] Preferably, the outer periphery of the first insulating sleeve is provided with an external thread, and the fastener comprises:

[0022] an internal thread for threaded connection with the external thread;

[0023] A pressing platform for pressing the second insulating sleeve.

[0024] Preferably, a radially inwardly concave limiting groove is provided on the outer periphery of the first insulating sleeve, and the limiting groove is provided at the end of the external thread to cooperate with the end of the internal thread for limiting the position.

[0025] Preferably, the first insulating sleeve has one end facing the inside of the motor housing and is provided with a first stop for axial limiting; and / or the wire threading hole has one end facing the inside of the motor housing and is provided with a stepped hole for axially limiting the second stop of the motor outlet.

[0026] A motor comprises a motor housing and a motor outlet terminal, and also comprises any one of the above-mentioned motor outlet terminal sealing devices, wherein the first insulating sleeve of the motor outlet terminal sealing device is sleeved with the outlet hole of the motor housing, the motor outlet terminal is passed through the wire hole of the first insulating sleeve, and the sealing body of the motor outlet terminal sealing device is sleeved on the outer periphery of the motor outlet terminal.

[0027] The motor outlet terminal sealing device provided by the present invention provides a first insulating sleeve between the motor housing and the motor outlet terminal, and forms a sealing structure between the first insulating sleeve and the motor outlet terminal through a sealing body, an elastic compression member and a fastener.

[0028] Among them, since the elastic compression part can compensate for the wear and / or deformation of the sealing body and other displacements, that is, the elastic compression part will always press the sealing body, so that the sealing body can always press the outer periphery of the motor output terminal and the end face of the first insulating sleeve, so that there is always good sealing between the first insulating sleeve and the motor output terminal, avoiding the cooling liquid inside the motor from leaking from between the first insulating sleeve and the motor output terminal.

[0029] At the same time, since the fastener is detachably fixedly connected to the first insulating sleeve or the motor terminal, the elastic compression member and the sealing body can be removed by removing the fastener, thereby separating the first insulating sleeve from the motor terminal, making it easier to maintain the motor terminal later.

[0030] In addition, during installation, a motor outlet sealing device is formed between the motor housing and the motor outlet through the assembly of the first insulating sleeve, the sealing body, the fastener and the elastic compression member, which avoids the glue filling operation and does not need to wait for the glue to solidify, etc., thus facilitating the early installation.

[0031] The motor provided by the present invention includes the above-mentioned motor outlet terminal sealing device and has the above-mentioned beneficial effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0033] Figure 1 A cross-sectional view of a motor outlet terminal sealing device provided in a specific embodiment of the present invention.

[0034] Figure 1 The reference numerals in the figures are as follows:

[0035] 1 is the motor housing, 2 is the first insulating sleeve, 21 is the first stopper, 3 is the motor outlet terminal, 31 is the second stopper, 4 is the sealing body, 5 is the fastener, 51 is the pressing platform, 6 is the elastic compression member, 7 is the second insulating sleeve, 71 is the groove, 8 is the clamping ring, and 9 is the motor lead wire. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] The core of the present invention is to provide a sealing device for the motor outlet terminal, which is convenient for later maintenance. Another core of the present invention is to provide a motor including the above-mentioned sealing device for the motor outlet terminal, which is convenient for maintenance of the motor outlet terminal.

[0038] Please refer to Figure 1 , which is a cross-sectional view of a motor outlet terminal sealing device provided in a specific embodiment of the present invention.

[0039] The present invention provides a sealing device for a motor outlet terminal, which mainly comprises a first insulating sleeve 2, a sealing body 4, a fastener 5 and an elastic compression member 6.

[0040] Specifically, the first insulating sleeve 2 is used to be sleeved with the wire outlet hole of the motor housing 1. At the same time, the first insulating sleeve 2 is provided with a wire threading hole for the motor outlet terminal 3 to pass through.

[0041] That is, the present invention utilizes the switching function of the first insulating sleeve 2 and provides the first insulating sleeve 2 between the motor housing 1 and the motor terminal 3 to achieve indirect connection between the motor terminal 3 and the motor housing 1 .

[0042] After assembly, the first insulating sleeve 2 is assembled in the wire outlet hole of the motor housing 1 , and the motor wire terminal 3 is assembled in the wire threading hole of the first insulating sleeve 2 .

[0043] The sealing body 4 is sleeved on the outer periphery of the motor output terminal 3 and is elastic and can be elastically deformed under pressure.

[0044] The fastener 5 is detachably fixedly connected to the first insulating sleeve 2 or the motor outlet terminal 3 and is used to compress the sealing body 4 so that the sealing body 4 undergoes elastic deformation.

[0045] After being deformed by the extrusion of the fastener 5, the sealing body 4 undergoes elastic deformation and comes into contact with the outer periphery of the motor terminal 3 and the end face of the first insulating sleeve 2 respectively, so as to realize a sealed connection between the first insulating sleeve 2 and the motor terminal 3.

[0046] In order to enable the fastener 5 to generate a continuous extrusion force on the sealing body 4 without being affected by the wear or permanent deformation of the sealing body 4 , an elastic compression member 6 is provided between the sealing body 4 and the fastener 5 .

[0047] As the name suggests, the elastic compression member 6 itself is elastic and can undergo elastic deformation after being squeezed; under the squeezing action of the fastener 5, the elastic compression member 6 is in a compressed state and has an elastic restoring force. Therefore, after the fastener 5 is fixed, an extrusion force is generated on the elastic compression member 6, causing the elastic compression member 6 to be compressed. At the same time, the extrusion force of the fastener 5 is transmitted to the sealing body 4 through the elastic compression member 6, causing the sealing body 4 to be squeezed and deformed, thereby pressing the outer periphery of the motor output terminal 3 and the end face of the first insulating sleeve 2 to achieve a sealing effect.

[0048] During use, when the sealing body 4 wears or produces permanent deformation as the use time increases, the elastic compression member 6 restores a certain deformation to compensate for the wear and / or deformation of the sealing body 4, that is, the elastic compression member 6 will always press the sealing body 4, so that the sealing body 4 can always press the outer periphery of the motor output terminal 3 and the end face of the first insulating sleeve 2, so that there is always good sealing between the first insulating sleeve 2 and the motor output terminal 3.

[0049] From this, it can be seen that the motor outlet terminal sealing device provided by the present invention is provided with a first insulating sleeve 2 between the motor housing 1 and the motor outlet terminal 3, and a sealing structure between the first insulating sleeve 2 and the motor outlet terminal 3 is formed by a sealing body 4, an elastic compression member 6 and a fastener 5, thereby achieving sealing between the first insulating sleeve 2 and the motor outlet terminal 3, and preventing the cooling liquid inside the motor from leaking from between the first insulating sleeve 2 and the motor outlet terminal 3.

[0050] At the same time, since the fastener 5 is detachably fixedly connected to the first insulating sleeve 2 or the motor terminal 3, the elastic compression member 6 and the sealing body 4 can be removed by removing the fastener 5, thereby separating the first insulating sleeve 2 from the motor terminal 3, making it easier to maintain the motor terminal 3 at a later time.

[0051] It should be noted that the present invention does not limit the specific shape of the elastic compression member 6. Preferably, the elastic compression member 6 is a compression spring.

[0052] In addition, the present invention does not limit the specific shape of the end face of the sealing body 4 in contact with the first insulating sleeve 2. In order to compensate for the radial displacement of the sealing body 4 while compensating for the axial displacement of the sealing body 4, on the basis of the above embodiment, the sealing body 4 is provided with an outer conical surface at one end facing the first insulating sleeve 2, and the first insulating sleeve 2 is provided with an inner conical surface for fitting with the outer conical surface.

[0053] That is to say, in this embodiment, the contact surface between the sealing body 4 and the first insulating sleeve 2 is a conical surface, which can make up for the small gap generated by the sealing body 4 along the radial direction, thereby achieving a better sealing effect.

[0054] In order to ensure the stability of the force applied to the elastic compression member 6 and avoid tilting or wear of the elastic compression member 6 during the fixing process of the fastener 5, on the basis of the above embodiment, a second insulating sleeve 7 is further included which is clamped between the fastener 5 and the elastic compression member 6. The second insulating sleeve 7 is sleeved on the outer periphery of the motor output terminal 3.

[0055] That is, in this embodiment, the second insulating sleeve 7 is provided between the fastener 5 and the elastic compression member 6 to protect the elastic compression member 6 and prevent the fastener 5 from damaging the elastic compression member 6 during the fixing process.

[0056] That is, the fastener 5 is pressed on the side of the second insulating sleeve 7 away from the elastic compression member 6 , and the pressing force of the fastener 5 is transmitted to the elastic compression member 6 through the second insulating sleeve 7 .

[0057] In order to ensure the correct position of the elastic compression member 6 , based on the above embodiment, the second insulating sleeve 7 is provided with a groove 71 for accommodating the elastic compression member 6 .

[0058] That is to say, during installation, the elastic compression member 6 is placed in the groove 71 , and the groove 71 serves to limit the elastic compression member 6 in the circumferential direction.

[0059] Furthermore, in order to prevent the elastic compression member 6 from directly acting on the sealing body 4 and causing damage to the sealing body 4 , a clamping ring 8 is provided between the elastic compression member 6 and the sealing body 4 on the basis of the above embodiment.

[0060] That is to say, in this embodiment, the sealing body 4 is not in direct contact with the elastic compression member 6, and the force of the elastic compression member 6 is transmitted to the sealing body 4 through the clamping ring 8, thereby avoiding damage to the side of the sealing body 4 facing the elastic compression member 6 during the installation process.

[0061] Taking into account the stability of the overall structure, on the basis of the above embodiment, the sealing body 4 includes an insertion portion for inserting into the groove 71, and the clamping ring 8 includes a first ring portion and a second ring portion, the first ring portion is clamped between the elastic compression part 6 and the end face of the insertion portion, and the second ring portion is clamped between the side wall of the groove 71 and the outer side of the insertion portion.

[0062] That is to say, if Figure 1 As shown, the elastic compression member 6 in this embodiment is completely sunken into the groove 71. At the same time, the clamping ring 8 is also located in the groove 71, and a part of the sealing body 4, that is, the protruding portion, is also located in the groove 71, so that the groove 71 has a circumferential limiting effect on the clamping ring 8 and the protruding portion of the sealing body 4.

[0063] In addition, in order to prevent the end face of the extending portion of the sealing body 4 from contacting the elastic compression member 6, and at the same time to prevent the second insulating sleeve 7 from causing wear on the side face of the extending portion, the clamping ring 8 in this embodiment includes a first ring portion and a second ring portion. The first ring portion separates the elastic compression member 6 from the end face of the extending portion of the sealing body 4, and the second ring portion separates the inner side wall of the groove 71 from the outer side face of the extending portion, thereby providing better protection for the sealing body 4.

[0064] It should be noted that the present invention does not limit the specific fixing method of the detachable connection between the fastener 5 and the first insulating sleeve 2 or the motor outlet terminal 3.

[0065] As a preferred solution, based on the above embodiment, the outer periphery of the first insulating sleeve 2 is provided with an external thread, and the fastener 5 includes an internal thread for threaded connection with the external thread and a pressing platform 51 for pressing the second insulating sleeve 7.

[0066] That is to say, the fastener 5 in this embodiment is fixedly connected to the first insulating sleeve 2 by threads. After the two are fixedly connected, the pressure platform 51 of the fastener 5 presses the second insulating sleeve 7, that is, the axial preload force of the fastener 5 acts on the second insulating sleeve 7 through the pressure platform 51, so that the second insulating sleeve 7 transmits the pressing force of the fastener 5 to the elastic compression member 6, and finally acts on the sealing body 4.

[0067] It should be noted that this embodiment does not limit the specific position where the fastener 5 presses the second insulating sleeve 7. For example, Figure 1 As shown, the second insulating sleeve 7 includes a sleeve portion and a protruding portion. The diameter of the sleeve portion is larger than the diameter of the protruding portion, and a step surface is formed at the connection between the sleeve portion and the protruding portion.

[0068] The fastener 5 is provided with an inner hole and a pressing platform 51 . The sleeve portion is sleeved in the inner hole of the fastener 5 , and the pressing platform 51 is pressed on the step surface directly formed by the sleeve portion and the protruding portion.

[0069] Furthermore, in order to ensure the firmness of the fastener 5, based on the above embodiment, the outer periphery of the first insulating sleeve 2 is provided with a radially concave limit groove, and the limit groove is provided at the end of the external thread to cooperate with the end of the internal thread for limiting.

[0070] That is, after the fastener 5 is threadedly connected to the first insulating sleeve 2 , the end of the internal thread of the fastener 5 is embedded in the limiting groove, and the limiting groove plays a certain axial limiting role on the fastener 5 .

[0071] Preferably, the limiting groove is located exactly at the end surface of the motor housing 1 facing outward.

[0072] That is, after the fastener 5 is connected to the first insulating sleeve 2 , the end face of the fastener 5 just fits in contact with the end face of the motor housing 1 facing outward.

[0073] Taking into account the axial limitation problem of the first insulating sleeve 2 when assembled with the motor housing 1, based on the above embodiment, a first stop 21 for axial limitation is provided at one end of the first insulating sleeve 2 facing the inside of the motor housing 1.

[0074] That is to say, when installing the first insulating sleeve 2, insert the first insulating sleeve 2 into the wire outlet hole from the inside to the outside of the motor housing 1 until the first stop 21 and the notch of the motor housing 1 used to cooperate with the first stop 21 are offset, indicating that the first insulating sleeve 2 is installed in place.

[0075] Similarly, considering the axial limitation problem of the motor terminal 3 when the motor terminal 3 is assembled with the first insulating sleeve 2, on the basis of the above embodiment, a stepped hole is provided at one end of the wire hole facing the inside of the motor housing 1 for axially limiting the second stop 31 of the motor terminal 3.

[0076] That is to say, the motor terminal 3 in this embodiment is provided with a second stop 31. During installation, the motor terminal 3 is inserted into the wire hole of the first insulating sleeve 2 from the inside of the motor to the outside until the second stop 31 is matched with the stepped hole, indicating that the motor terminal 3 and the first insulating sleeve 2 are assembled in place.

[0077] It can be understood that the motor output terminal 3 is fixedly connected to the motor lead wire 9. Preferably, the motor lead wire 9 is connected to the motor output terminal 3 by welding such as brazing to achieve power transmission.

[0078] It should be noted that, in the above embodiments, the interior of the motor refers to the attached Figure 1 The part below the motor housing 1, the outside of the motor refers to the attached Figure 1 The part located above the motor housing 1.

[0079] In addition, the first insulating sleeve 2 and the second insulating sleeve 7 both have insulating properties and are made of insulating materials, thereby ensuring good electrical insulation properties of the motor output terminal 3 .

[0080] In addition, the above embodiments provide a detailed introduction to the first sealing structure between the motor output terminal 3 and the first insulating sleeve 2; the present invention does not limit the specific connection method between the motor housing 1 and the first insulating sleeve 2. Obviously, the motor housing 1 and the first insulating sleeve 2 are sealed.

[0081] The present invention does not limit the second sealing structure between the motor housing 1 and the first insulating sleeve 2 . The specific structure of the second sealing structure may be the same as or different from the specific structure of the first sealing structure.

[0082] For example, the second sealing structure can be a sealant, that is, the motor housing 1 and the first insulating sleeve 2 are fixedly connected by means of a sealant injection. Since the first insulating sleeve 2 and the motor terminal 3 are connected by the above-mentioned detachable sealing method, the seal between the motor terminal 3 and the motor housing 1 is ensured while also ensuring detachability, facilitating later maintenance of the motor terminal 3. At the same time, the sealant connection method simplifies the overall structure.

[0083] In addition to the above-mentioned motor outlet terminal sealing device, the present invention also provides a motor including the motor outlet terminal sealing device disclosed in the above-mentioned embodiment, the motor also includes a motor housing 1 and a motor outlet terminal 3, the first insulating sleeve 2 of the above-mentioned motor outlet terminal sealing device is sleeved with the outlet hole of the motor housing 1, the motor outlet terminal 3 is passed through the wire hole of the first insulating sleeve 2, and the sealing body 4 of the motor outlet terminal sealing device is sleeved on the outer periphery of the motor outlet terminal 3.

[0084] It can be understood that the sealing body 4, fastener 5 and elastic compression member 6 of the above-mentioned motor outlet terminal sealing device constitute a sealing structure between the motor outlet terminal 3 and the first insulating sleeve 2, thereby realizing a sealed connection between the motor outlet terminal 3 and the first insulating sleeve 2.

[0085] At the same time, since the fastener 5 of the above-mentioned motor terminal sealing device is detachably fixed to the first insulating sleeve 2 or the motor terminal 3, the first insulating sleeve 2 and the motor terminal 3 can be separated by removing the fastener 5, which is convenient for later maintenance of the motor terminal 3.

[0086] It should be noted that the structures of the motor housing 1, the motor outlet terminal 3 and other parts of the motor can be referred to the prior art and will not be described in detail herein.

[0087] It should also be noted that, in this specification, relational terms such as first and second, etc. are merely 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.

[0088] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0089] The above is a detailed introduction to the motor outlet terminal sealing device and motor provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only intended to help understand the method and core concept of the present invention. It should be pointed out that for ordinary technicians in this technical field, various improvements and modifications can be made to the present invention without departing from the principles of the present invention. Such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A sealing device for a motor outlet terminal, characterized in that: include: A first insulating sleeve (2) for sleeve-engaging with the wire outlet hole of the motor housing (1), the first insulating sleeve being provided with a wire threading hole for passing the motor wire outlet terminal (3); A sealing body (4) sleeved on the outer periphery of the motor outlet terminal (3) and having elasticity; a fastener (5) for compressing the sealing body (4), which is detachably fixedly connected to the first insulating sleeve (2) or the motor outlet terminal (3); the sealing body (4) is deformed under the pressure of the fastener (5) and is in contact with the outer periphery of the motor outlet terminal (3) and the end surface of the first insulating sleeve (2), respectively; an elastic compression member (6) provided between the sealing body (4) and the fastener (5); The sealing body (4) is provided with an outer conical surface at one end facing the first insulating sleeve (2), and the first insulating sleeve (2) is provided with an inner conical surface for contacting with the outer conical surface; The outer periphery of the first insulating sleeve (2) is provided with an external thread, and the fastener (5) comprises: an internal thread for threaded connection with the external thread; The outer periphery of the first insulating sleeve (2) is provided with a radially inwardly concave limiting groove, and the limiting groove is provided at the end of the external thread to cooperate with the end of the internal thread for limiting.

2. The motor outlet terminal sealing device according to claim 1, characterized in that: It also includes a second insulating sleeve (7) sandwiched between the fastener (5) and the elastic compression member (6), and the second insulating sleeve (7) is sleeved on the outer periphery of the motor outlet terminal (3).

3. The motor outlet terminal sealing device according to claim 2, characterized in that: The second insulating sleeve (7) is provided with a groove (71) for accommodating the elastic compression member (6).

4. The motor outlet terminal sealing device according to claim 3, characterized in that: A compression ring (8) is provided between the elastic compression member (6) and the sealing body (4).

5. The motor outlet terminal sealing device according to claim 4, characterized in that: The sealing body (4) includes an insertion portion for inserting into the groove (71), and the clamping ring (8) includes: A first ring portion sandwiched between the elastic compression member (6) and the end surface of the extending portion; A second ring portion is sandwiched between the side wall of the groove (71) and the outer side of the protruding portion.

6. The motor outlet terminal sealing device according to any one of claims 2 to 5, characterized in that: The fastener (5) comprises: A pressing platform (51) for pressing the second insulating sleeve (7).

7. The motor outlet terminal sealing device according to any one of claims 1 to 5, characterized in that: The end of the first insulating sleeve (2) facing the interior of the motor housing (1) is provided with a first stop (21) for axial limiting; and / or the end of the threading hole facing the interior of the motor housing (1) is provided with a stepped hole for axial limiting the second stop (31) of the motor outlet terminal (3).

8. A motor comprising a motor housing (1) and a motor output terminal (3), characterized in that: It also includes the motor outlet terminal sealing device according to any one of claims 1 to 7, wherein the first insulating sleeve (2) of the motor outlet terminal sealing device is sleeved with the outlet hole of the motor housing (1), the motor outlet terminal (3) is passed through the through hole of the first insulating sleeve (2), and the sealing body (4) of the motor outlet terminal sealing device is sleeved on the outer periphery of the motor outlet terminal (3).

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