Blanking cover and electric drive assembly

Abstract

The utility model discloses a blanking cap and an electric drive assembly. The electric drive assembly comprises a shell and an oil seal, the shell is provided with a first shaft hole and a clamping groove which are arranged at an interval, and the oil seal is arranged in the first shaft hole; the blanking cap comprises a connecting piece, a plug and a buckle structure; the connecting piece is provided with a connecting surface; the plug is connected to the connecting surface, is inserted into the first shaft hole, penetrates through the oil seal and is in interference fit with the oil seal; the buckle structure is connected to the edge of the connecting face and matched with the clamping groove in a clamped mode. According to the technical scheme, the blanking cap integrates the sealing function and the anti-falling function.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing structures, in particular to a plugging cover and an electric drive assembly. Background Art

[0002] Since the output shaft oil seal needs to be sealed when the electric drive assembly is shipped to prevent the intrusion of foreign matter, the plugging cover and the oil seal are interference fit for simple sealing. During transportation, the whole machine vibrates and there is a risk of the plugging cover falling off. Utility Model Content

[0003] The main purpose of the utility model is to provide a plugging cover, aiming to provide a plugging cover with both sealing and anti-falling functions.

[0004] To achieve the above-mentioned purpose, the utility model proposes a plugging cover, which is applied to an electric drive assembly, wherein the electric drive assembly comprises a housing and an oil seal, wherein the housing is provided with a first shaft hole and a slot arranged at intervals, and the oil seal is arranged in the first shaft hole, and the plugging cover comprises:

[0005] A connecting piece, wherein the connecting piece is provided with a connecting surface;

[0006] A plug, the plug is connected to the connection surface, the plug is inserted into the first shaft hole, and is penetrated through the oil seal, and has an interference fit with the oil seal;

[0007] A buckle structure is connected to the edge of the connecting surface and is engaged with the clamping slot.

[0008] In an embodiment of the present invention, the locking slot and the buckle structure are both in an arc shape.

[0009] In an embodiment of the present invention, the connecting member is further provided with an outer surface arranged opposite to the connecting surface, and the outer surface is provided with an avoidance groove, and the avoidance groove is arranged corresponding to the buckle structure.

[0010] In an embodiment of the present invention, the buckle structure and the avoidance groove are in an arc shape.

[0011] In an embodiment of the present invention, the length of the avoidance groove is greater than the length of the buckle structure.

[0012] In one embodiment of the utility model, the snap structure includes a connecting section and a snap-fitting portion, the connecting section is connected to the edge of the connecting surface, the snap-fitting portion is connected to an end of the connecting section away from the connecting surface, and the snap-fitting portion is snap-fitted with the slot.

[0013] In an embodiment of the present invention, the axial direction of the connecting section is parallel to the axial direction of the first axial hole.

[0014] In one embodiment of the present invention, a plurality of the buckle structures are provided, and the plurality of the buckle structures are distributed in a ring array along the circumference of the plug.

[0015] In an embodiment of the present invention, the connecting surface abuts against an end surface of the housing where the first axial hole is provided.

[0016] The utility model also provides an electric drive assembly, comprising:

[0017] A housing, wherein the housing is provided with a first shaft hole and a slot arranged at intervals;

[0018] an oil seal, the oil seal being disposed in the first shaft hole;

[0019] As described above, the plugging head of the plugging cover is inserted into the first shaft hole, penetrates the oil seal, and has an interference fit with the oil seal.

[0020] In an embodiment of the present invention, the slot is disposed on an outer peripheral wall of the housing.

[0021] In the plugging cover proposed by the utility model, the plugging cover includes a plug and a snap-fit ​​structure arranged on the connecting piece. When applied to the electric drive assembly, the plugging head is inserted into the first axial hole of the shell, and is penetrated through the oil seal, and has an interference fit with the oil seal. At the same time, the snap-fit ​​structure is snap-fitted with the slot of the shell. In this way, the plugging cover adopts a dual connection method of interference fit and snap fit, which increases the installation reliability between the plugging cover and the shell, thereby taking into account the dual functions of sealing and anti-detachment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0023] Figure 1 This is a structural schematic diagram of an embodiment of the plug of the utility model;

[0024] Figure 2 It is a front view of an embodiment of the plug of the utility model;

[0025] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0026] Figure 4 A top view of an embodiment of the plug of the utility model;

[0027] Figure 5 It is a partial structural cross-sectional view of an embodiment of the electric drive assembly of the utility model;

[0028] Figure 6 for Figure 5 A partial enlarged view of point B in the middle.

[0029] Description of Figure Numbers:

[0030] Label name Label name 1000 Electric drive assembly 30 Buckle structure 100 Blocking cover 31 Connection segment 10 Connectors 32 Card connection 11 Connection surface 200 case 12 Outer surface 210 First shaft hole 121 Avoidance slot 220 Card slot 122 Handle 300 Oil seal 20 Plug

[0031] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0032] 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 of 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.

[0033] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0034] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0035] The utility model provides a plugging cover 100, aiming to provide a plugging cover 100 having both sealing and anti-falling functions.

[0036] Combined with reference Figures 1 to 6In one embodiment of the plugging cover 100 of the utility model, the plugging cover 100 is applied to an electric drive assembly 1000, and the electric drive assembly 1000 includes a shell 200 and an oil seal 300, the shell 200 is provided with a first axial hole 210 and a slot 220 arranged at intervals, and the oil seal 300 is arranged in the first axial hole 210; the plugging cover 100 includes a connecting member 10, a plug 20 and a snap-fit ​​structure 30; the connecting member 10 is provided with a connecting surface 11; the plug 20 is connected to the connecting surface 11, the plug 20 is inserted into the first axial hole 210, and is penetrated by the oil seal 300, and has an interference fit with the oil seal 300; the snap-fit ​​structure 30 is connected to the edge of the connecting surface 11, and is snap-fitted with the slot 220.

[0037] It can be understood that, in the plugging cover 100 proposed in the utility model, the plugging cover 100 includes a plug 20 and a snap-fit ​​structure 30 arranged on the connecting member 10. When applied to the electric drive assembly 1000, the plug 20 is inserted into the first axial hole 210 of the shell 200, and is penetrated through the oil seal 300, and has an interference fit with the oil seal 300. At the same time, the snap-fit ​​structure 30 is snap-fitted with the slot 220 of the shell 200. In this way, the plugging cover 100 adopts a dual connection method of interference fit and snap fit, which increases the installation reliability between the plugging cover 100 and the shell 200, thereby taking into account the dual functions of sealing and anti-detachment.

[0038] In addition, the current method of achieving a sealed connection by simply increasing the interference fit between the plugging cover 100 and the sealing lip of the oil seal 300 may cause irreversible deformation of the sealing lip of the oil seal 300, increase the installation force, and make installation difficult. However, the present solution adopts a dual connection method of interference fit and snap fit, which can appropriately reduce the interference fit between the plugging cover 100 and the sealing lip of the oil seal 300, and can effectively improve the problems of irreversible deformation of the sealing lip of the oil seal 300, increase the installation force, and make installation difficult.

[0039] In actual application, the plug 20 can be an integrally formed structure with the connector 10, and the plug 20 can also be connected to the connection surface 11 of the connector 10 by bonding, threading, etc. Of course, in some embodiments, in order to ensure the reliability of the sealed connection between the plug 20 and the connector 10, the plug 20 and the connector 10 can be an integrally formed structure, which can also simplify the preparation process.

[0040] In actual application, similarly, the buckle structure 30 can be an integrally formed structure with the connector 10, and the buckle structure 30 can also be connected to the connection surface 11 of the connector 10 by bonding, threaded connection, etc. Of course, in some embodiments, in order to ensure the reliability of the sealed connection between the buckle structure 30 and the connector 10, the buckle structure 30 and the connector 10 can be an integrally formed structure, which can also simplify the preparation process.

[0041] In actual application, one or more buckle structures 30 may be provided.

[0042] Optionally, see Figures 1 to 4 In one embodiment of the plugging cover 100 of the present invention, the card slot 220 and the buckle structure 30 are both arc-shaped.

[0043] With such a configuration, the arc-shaped slot 220 can be extended along the circumference of the shell 200 to facilitate the preparation and molding of the slot 220, and the shape of the arc-shaped snap structure 30 can be adapted to the shape of the slot 220, which can improve the snap connection strength between the snap structure 30 and the slot 220, thereby increasing the installation reliability between the blocking cover 100 and the shell 200.

[0044] Optionally, see Figure 1 , Figure 4 In one embodiment of the plugging cover 100 of the utility model, the connecting member 10 is further provided with an outer surface 12 arranged opposite to the connecting surface 11 , and the outer surface 12 is provided with an avoidance groove 121 , and the avoidance groove 121 is arranged corresponding to the buckle structure 30 .

[0045] In this way, the design of the avoidance groove 121 can increase the deformation capacity of the buckle structure 30 when the plugging cover 100 is pressed and pulled out, so as to prevent the buckle structure 30 from being deformed by force and brittle fracture.

[0046] It should be noted that the depth and width of the avoidance groove 121 are not specifically limited here, as long as they can provide deformation space for the buckle structure 30 .

[0047] In some embodiments, in order to facilitate the removal of the blocking cover 100 , a handle 122 may be provided on the outer surface 12 of the connector 10 , so that the user can smoothly remove the blocking cover 100 through the handle 122 .

[0048] Optionally, see Figure 1 , Figure 4 In one embodiment of the plugging cover 100 of the present invention, the buckle structure 30 and the avoidance groove 121 are in an arc shape.

[0049] By configuring in this way, by making the shape of the avoidance groove 121 and the shape of the snap structure 30 both arc-shaped, when the blocking cover 100 is pressed in and pulled out, the arc-shaped avoidance groove 121 can provide a more suitable deformation space for the arc-shaped snap structure 30, which can further increase the deformation ability of the snap structure 30 when the blocking cover 100 is pressed in and pulled out.

[0050] In actual application, the length of the avoidance groove 121 may be equal to the length of the buckle structure 30 , or may be greater than or less than the length of the buckle structure 30 .

[0051] Optionally, see Figure 1 , Figure 4 In one embodiment of the plugging cover 100 of the present invention, the length of the avoidance groove 121 is greater than the length of the buckle structure 30 .

[0052] With such arrangement, when the plugging cover 100 is press-fitted or pulled out, the longer avoidance groove 121 can provide more sufficient deformation space for the buckle structure 30, so as to further increase the deformation capacity of the buckle structure 30 when the plugging cover 100 is press-fitted or pulled out.

[0053] Optionally, see Figure 3 , Figure 6 In one embodiment of the plugging cover 100 of the utility model, the snap structure 30 includes a connecting section 31 and a snap-fitting portion 32. The connecting section 31 is connected to the edge of the connecting surface 11, and the snap-fitting portion 32 is connected to an end of the connecting section 31 away from the connecting surface 11. The snap-fitting portion 32 is snap-fitted with the slot 220.

[0054] By so configuring, by connecting the snap-fit ​​portion 32 to the end of the connecting section 31 away from the connecting surface 11 , the force arm of the snap-fit ​​structure 30 can be extended, so that when the plugging cover 100 is pressed in and pulled out, the snap-fit ​​structure 30 can be more easily deformed and smoothly snapped into the slot 220 and more easily removed from the slot 220 .

[0055] In some embodiments, the connecting section 31 and the clamping portion 32 are integrally formed, which can not only ensure the connection reliability between the connecting section 31 and the clamping portion 32 , but also simplify the preparation process.

[0056] Optionally, see Figure 3 , Figure 5 , Figure 6 In one embodiment of the plugging cover 100 of the present invention, the axial direction of the connecting section 31 is parallel to the axial direction of the first axial hole 210 .

[0057] With such arrangement, during the assembly process, when the plug 20 is inserted into the first axial hole 210 along the axial direction of the first axial hole 210 , the buckle structure 30 can also move along its axial direction, so that the buckle structure 30 can be more smoothly inserted into the buckle slot 220 of the shell 200 .

[0058] Optionally, see Figure 1 , Figure 2 , Figure 4 In one embodiment of the plugging cover 100 of the present invention, a plurality of snap-fit ​​structures 30 are provided, and the plurality of snap-fit ​​structures 30 are distributed in a ring array along the circumference of the plug 20 .

[0059] In this way, by providing a plurality of snap structures 30 , the blocking cover 100 can be connected to the housing 200 using the plurality of snap structures 30 , thereby further increasing the installation reliability between the blocking cover 100 and the housing 200 .

[0060] It should be noted that, correspondingly, a plurality of slots 220 are also correspondingly provided on the housing 200 , so that each buckle structure 30 is engaged with a slot 220 .

[0061] In actual application, the multiple slots 220 of the housing 200 may be interconnected or spaced apart. In some embodiments, when the multiple slots 220 are interconnected, the multiple slots 220 may form a complete annular groove.

[0062] Optionally, see Figure 5 In one embodiment of the plugging cover 100 of the present invention, the connecting surface 11 abuts against the end surface of the housing 200 where the first axial hole 210 is provided.

[0063] Such a configuration can improve the sealing between the plug cover 100 and the housing 200 and prevent the lubricating oil inside the housing 200 from leaking out from the gap between the connecting surface 11 and the end surface of the housing 200 where the first axial hole 210 is provided.

[0064] Combined with reference Figure 5 , Figure 6 The embodiment of the utility model further provides an electric drive assembly 1000, which includes a housing 200, an oil seal 300 and the plug cover 100 as described above. The specific structure of the plug cover 100 is detailed in the above embodiment. Since the electric drive assembly 1000 adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought by all the technical solutions of all the above embodiments, which will not be described one by one here.

[0065] The housing 200 is provided with a first axial hole 210 and a slot 220 which are spaced apart; the oil seal 300 is arranged in the first axial hole 210; the plug 20 of the plug cover 100 is inserted into the first axial hole 210, and penetrates the oil seal 300, and is interference fit with the oil seal 300.

[0066] It can be understood that in the electric drive assembly 1000 proposed in the utility model, the plug cover 100 includes a plug 20 and a snap-fit ​​structure 30 arranged on the connecting member 10. During the assembly process, the plug 20 is inserted into the first axial hole 210 of the shell 200, and is penetrated by the oil seal 300, and has an interference fit with the oil seal 300. At the same time, the snap-fit ​​structure 30 is snap-fitted with the slot 220 of the shell 200. In this way, the plug cover 100 adopts a dual connection method of interference fit and snap fit, which increases the installation reliability between the plug cover 100 and the shell 200, thereby taking into account the dual functions of sealing and anti-detachment.

[0067] Further, see Figure 5 , Figure 6In one embodiment of the electric drive assembly 1000 of the present utility model, the card slot 220 is provided on the outer peripheral wall of the housing 200. Such a configuration makes it easier to prepare and form the card slot 220.

[0068] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A plugging cover, applied to an electric drive assembly, the electric drive assembly comprising a housing and an oil seal, the housing being provided with a first shaft hole and a slot arranged at intervals, the oil seal being arranged in the first shaft hole, characterized in that: The plugging cover comprises: A connecting piece, wherein the connecting piece is provided with a connecting surface; A plug, the plug is connected to the connection surface, the plug is inserted into the first shaft hole, and is penetrated through the oil seal, and has an interference fit with the oil seal; A buckle structure is connected to the edge of the connecting surface and is engaged with the clamping slot.

2. The plugging cover according to claim 1, characterized in that: The clamping slot and the buckle structure are both in arc shape.

3. The plugging cover according to claim 1, characterized in that: The connecting member is further provided with an outer surface arranged opposite to the connecting surface, and the outer surface is provided with an avoidance groove, and the avoidance groove is arranged corresponding to the buckle structure.

4. The plugging cover according to claim 3, characterized in that: The buckle structure and the avoidance groove are in arc shape.

5. The plugging cover according to claim 4, characterized in that: The length of the avoidance groove is greater than the length of the buckle structure.

6. The plugging cover according to any one of claims 1 to 5, characterized in that: The buckle structure includes a connecting section and a clamping portion, wherein the connecting section is connected to the edge of the connecting surface, the clamping portion is connected to an end of the connecting section away from the connecting surface, and the clamping portion is clamped and matched with the clamping slot.

7. The plugging cover according to claim 6, characterized in that: The axial direction of the connecting section is parallel to the axial direction of the first axial hole.

8. The plugging cover according to any one of claims 1 to 5, characterized in that: There are multiple buckle structures, and the multiple buckle structures are distributed in a ring array along the circumference of the plug.

9. The plugging cover according to any one of claims 1 to 5, characterized in that: The connecting surface abuts against an end surface of the housing where the first axial hole is provided.

10. An electric drive assembly, characterized in that: include: A housing, wherein the housing is provided with a first shaft hole and a slot arranged at intervals; an oil seal, the oil seal being disposed in the first shaft hole; According to any one of claims 1 to 9, the plug of the plug is inserted into the first axial hole, penetrates the oil seal, and has an interference fit with the oil seal.

11. The electric drive assembly according to claim 10, characterized in that: The card slot is arranged on the outer peripheral wall of the shell.

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