Automobile generator end cover assembly capable of changing heat dissipation air duct

Abstract

The utility model relates to the technical field of generator shells, in particular to an automobile generator end cover assembly with a convertible heat dissipation air duct, which comprises a front end cover, a rear end cover and a fan, the side surfaces of the front end cover and the rear end cover are both concavely provided with connecting concave parts, the connecting concave parts are matched with detachable side insertion sheets, the detachable insertion sheets are arc-shaped insertion sheets, the connecting concave parts are arranged at intervals, and the fan is arranged on the front end cover and the rear end cover. Every two adjacent connecting concave parts are connected through a connecting convex part, each connecting convex part comprises a supporting table which is concavely arranged on the side back towards the stator iron core, the side, close to the stator iron core, of each detachable inserting piece is connected with a clamping connecting plate, and the top surface of each clamping connecting plate is flush with the top surface of the corresponding supporting table; the height of the stator core is equal to the distance between the upper and lower supporting tables. The front end cover, the rear end cover and the detachable side insertion pieces are designed to be assembled in a mutual insertion mode, and the detachable side insertion pieces can be freely selected and matched according to different motor structures and different use scenes so as to achieve the purpose of being adaptive to various generators.

Description

Technical Field

[0001] The utility model relates to the technical field of generator housings, in particular to an automobile generator end cover assembly with a transformable heat dissipation air duct. Background Art

[0002] Conventional automotive generators typically use air cooling for heat dissipation, and these air-cooled generators are categorized into two types: internal and external fan. The side of the end cover of an automotive generator using an internal fan is typically semi-enclosed (with ventilation windows). For example, Patent Application No. CN201420729031.6 discloses a generator rear end cover with built-in heat dissipation ribs. The rear end cover includes a rear end cover plate with inwardly protruding heat dissipation ribs evenly distributed along the circumference. The rear end cover plate is an integrated structure. In contrast, the side of the end cover of an automotive generator using an external fan is typically fully enclosed (without ventilation windows). For example, Patent Application No. CN201620228237.X discloses a generator for a motor vehicle and its front end cover. The generator includes a rotor shaft, a rotor connected to the rotor shaft, and an external fan. The front end cover is connected between the rotor and the external fan. The front end cover includes ventilation holes for heat dissipation and ventilation, but the side of the generator housing formed by the front and rear ends of the generator is closed. However, due to the diverse usage scenarios of automotive alternators, customers have a strong demand for both types of alternators. Currently, motors of different structures use different end caps, necessitating the production of different end cap molds, resulting in a series of problems such as high manufacturing costs and long development cycles. Utility Model Content

[0003] In view of the above-mentioned deficiencies in the prior art, the purpose of the present utility model is to provide an automobile generator end cover assembly with a convertible heat dissipation duct.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A vehicle generator end cover assembly with a transformable heat dissipation duct includes a front cover, a rear cover, and a fan, including: the side surfaces of the front cover and the rear cover are both recessed with connecting recesses, the connecting recesses are adapted to detachable side inserts, the detachable side inserts are arc-shaped inserts, the connecting recesses are arranged at intervals, and two adjacent connecting recesses are connected by connecting protrusions, the connecting protrusions include a support platform recessed downwardly on the side facing away from the stator core, the detachable side insert is connected to a snap-fit ​​connecting plate near the side of the stator core, the top surface of the snap-fit ​​connecting plate is flush with the top surface of the support platform, and the height of the stator core is equal to the distance between the upper and lower support platforms.

[0006] As a preferred embodiment of the present invention, a plug-in slot is formed at the connection between the snap-fit ​​connection plate and the detachable side plug-in piece, the connection protrusion is provided with an insertion ridge protruding toward the plug-in slot, and the plug-in slot and the insertion ridge are interference fit.

[0007] As a preferred embodiment of the present invention, the curved surface of the inner wall of the insertion protrusion and the curved surface of the inner wall of the connecting recess are not on the same curved surface, and the connecting recess includes a supporting surface for supporting the detachable side insert and the snap-on connecting plate, and the thickness of the supporting surface is greater than the sum of the thicknesses of the detachable side insert and the snap-on connecting plate.

[0008] As a preferred embodiment of the present invention, the connecting protrusion is provided with an end cover mounting hole, and the upper and lower end cover mounting holes are respectively connected to the two ends of the bolt.

[0009] As a preferred embodiment of the present invention, the connecting protrusion includes a pair of connecting wings and a base plate respectively connected to the inserted protrusion on the same side, the two connecting wings are mirror-symmetrically connected to both sides of the base plate, and the end cover mounting hole is provided at the center line of the base plate.

[0010] As a preferred embodiment of the present invention, the connecting wing includes an outer convex arc-shaped part and an inner convex arc-shaped part connected to each other, and the outer convex arc-shaped part, the inner convex arc-shaped part and the base plate enclose a variable space.

[0011] As a preference of the present invention, the cross-section of the horizontal plane of the deformation space is larger than the cross-section of the horizontal plane of the bolt.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0013] 1. The automobile generator end cover is designed to be plugged into a front cover, a rear cover and a detachable side insert. The front cover and the rear cover mainly support and fix the automobile generator stator, rotor, electronic components and protective components. The detachable side insert can be arbitrarily selected according to the motor structure and usage scenarios. Fully enclosed detachable side inserts, semi-enclosed detachable side inserts (i.e., heat dissipation holes are opened on the detachable side inserts) or no detachable side inserts can be installed. Semi-enclosed protective inserts can be equipped with different window forms according to different protection levels to achieve the purpose of adapting to a variety of generators.

[0014] 2. The connecting concave portion and the connecting convex portion are connected to each other to form the side surface of the front cover or the side surface of the rear end cover. An insertion convex strip is provided at the connection between the connecting convex portion and the detachable side insert for interlocking with the insertion groove of the detachable side insert to fix the detachable side insert. A standard opening form is used, and products on the same platform can be compatible.

[0015] 3. The design of the outward convex arc parts and the inward convex arc parts is optimized on the overall structure of the connecting wing. During assembly, due to the interference fit of the plug-in slots and the inserted ridges, a deformation space is provided so that the plug-in slots and the inserted ridges can be assembled smoothly. At the same time, when the rotor rotates and generates vibration, the deformation space protects the plug-in slots and the inserted ridges. The rotation of the rotor makes the connection strength between the plug-in slots and the inserted ridges too large, causing rigidity damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Other features, objects and advantages of the present invention will become more apparent from the detailed description of the non-limiting embodiments with reference to the following drawings:

[0017] Figure 1 This is a schematic structural diagram of an automobile generator end cover assembly with a changeable heat dissipation duct in an internal fan mode according to the present invention;

[0018] Figure 2 This is a structural schematic diagram of an automobile generator end cover assembly with a convertible heat dissipation duct in an external fan mode according to the present invention;

[0019] Figure 3 This is a side view of an automobile generator end cover assembly with a convertible heat dissipation duct in the external fan mode according to the utility model;

[0020] Figure 4 for Figure 3 Cross-section at AA;

[0021] Figure 5 for Figure 3 Cross-section at the middle BB;

[0022] Figure 6 The utility model is a structural schematic diagram of the front end cover of an automobile generator end cover assembly with a changeable heat dissipation duct.

[0023] 1. Front cover, 2. Rear cover, 3. Fan, 4. Connecting recess, 401. Support surface, 5. Removable side insert, 6. Stator core, 7. Snap-in connecting plate, 9. Connecting protrusion, 901. Support platform, 902. Inserting ridge, 903. End cover mounting hole, 904. Connecting wing, 9041. Outer convex arc part, 9042. Inner convex arc part, 905. Base plate, 10. Bolt, 100. Plug-in slot, 200. Deformation space. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0025] A car generator end cover assembly with a changeable heat dissipation duct includes a front cover 1, a rear cover 2 and a fan 3. The fan is built into the inner cavity formed by the front cover and the rear cover, or the fan is arranged on the outside of the front cover. It is characterized in that: the side surfaces of the front cover 1 and the rear cover 2 are both recessed with a connecting recess 4, the connecting recess 4 is adapted to a detachable side insert 5, the detachable side insert 5 is an arc-shaped insert, and it is particularly noted that the arc here specifically refers to a circular arc, the connecting recesses 4 are arranged at intervals, and two adjacent connecting recesses 4 are connected by a connecting protrusion 9, the connecting protrusion 9 includes a support platform 901 recessed downward on the side facing away from the stator core 6, the detachable side insert 5 is connected to a snap-fit ​​connecting plate 7 near the side of the stator core 6, the top surface of the snap-fit ​​connecting plate 7 is flush with the top surface of the support platform 901, and the height of the stator core 6 is equal to the distance between the upper and lower support platforms 901.

[0026] The automobile generator end cover is designed to be plugged into a front cover 1, a rear cover 2 and a detachable side plug 5 for assembly. The front cover 1 and the rear cover 2 mainly support and fix the stator, rotor, electronic components and protective components of the automobile generator. The detachable side plug 5 can be arbitrarily selected according to the motor structure and usage scenarios. A fully enclosed detachable side plug, a semi-enclosed detachable side plug (i.e., a heat dissipation hole is opened on the detachable side plug) or no detachable side plug can be installed. The semi-enclosed protective plug can be equipped with different window forms according to different protection levels to achieve the purpose of adapting to a variety of generators.

[0027] The connection between the snap-fit ​​connection plate 7 and the detachable side insert 5 forms an inserting groove 100 , and the connecting protrusion 9 protrudes toward the inserting groove 100 to provide an inserting ridge 902 . The inserting groove 100 and the inserting ridge 902 are interference fit.

[0028] The connecting recess 4 and the connecting protrusion 9 are connected to each other to form the side of the front cover 1 or the side of the rear cover 2. An insertion ridge 902 is provided at the connection between the connecting protrusion 9 and the detachable side plug-in 5 for interlocking with the plug-in groove 100 of the detachable side plug-in 5 to fix the detachable side plug-in 5. A standard opening form is used, and products on the same platform can be compatible.

[0029] The curved surface of the inner wall of the insertion protrusion 902 and the curved surface of the inner wall of the connecting recess 4 are not on the same curved surface. The connecting recess 4 includes a supporting surface 401 for supporting the detachable side insert 5 and the snap-on connecting plate 7. The thickness of the supporting surface 401 is greater than the sum of the thicknesses of the detachable side insert 5 and the snap-on connecting plate 7.

[0030] The connecting recesses 4 are arranged at intervals, and two adjacent connecting recesses 4 are connected by a connecting protrusion 9. The connecting protrusion 9 is provided with an end cover mounting hole 903. The upper and lower end cover mounting holes 903 are respectively connected to the two ends of the bolt 10.

[0031] The connecting protrusion 9 includes a pair of connecting wings 904 and a base plate 905 respectively connected to the inserted protrusion 902 on the same side. The two connecting wings 904 are mirror-symmetrically connected to both sides of the base plate 905, and the end cover mounting hole 903 is set at the center line of the base plate 905.

[0032] Connecting wing 904 comprises an interconnected outwardly convex curved member 9041 and an inwardly convex curved member 9042. These two members, along with base plate 905, enclose a deformable space 200. During assembly, the insertion slot 100 and the insertion ridge 902 are fitted with an interference fit. The provision of deformable space 200 facilitates smooth assembly of the insertion slot 100 and the insertion ridge 902. The horizontal cross-section of deformable space 200 is larger than the horizontal cross-section of bolt 10. Therefore, when the rotor vibrates due to rotation, the deformable space 200 protects the insertion slot 100 and the insertion ridge 902. Rotation can cause the connection between the insertion slot 100 and the insertion ridge 902 to become excessively strong, resulting in damage to the rigidity of the assembly.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An automobile generator end cover assembly with a changeable heat dissipation duct, characterized in that: The invention comprises a front cover (1), a rear cover (2) and a fan (3), wherein connecting recesses (4) are arranged at intervals, and two adjacent connecting recesses (4) are connected by connecting protrusions (9), wherein the connecting protrusions (9) comprise a support platform (901) which is recessed downwards on the side facing away from the stator core (6), and a detachable side insert (5) is connected to a snap-fit ​​connecting plate (7) close to one side of the stator core (6), wherein the top surface of the snap-fit ​​connecting plate (7) is flush with the top surface of the support platform (901), and the height of the stator core (6) is equal to the distance between the upper and lower support platforms (901).

2. The automobile generator end cover assembly with a changeable heat dissipation duct according to claim 1, characterized in that: A plug-in slot (100) is formed at the connection point between the snap-fit ​​connection plate (7) and the detachable side insert (5), and an insertion ridge (902) is provided on the connection protrusion (9) protruding toward the plug-in slot (100). The plug-in slot (100) and the insertion ridge (902) are interference-fitted.

3. The automobile generator end cover assembly with a changeable heat dissipation duct as claimed in claim 2, characterized in that: The curved surface of the inner wall of the insertion ridge (902) and the curved surface of the inner wall of the connecting recess (4) are not on the same curved surface; the connecting recess (4) comprises a supporting surface (401) for supporting the detachable side insert (5) and the snap-fit ​​connecting plate (7); the thickness of the supporting surface (401) is greater than the sum of the thicknesses of the detachable side insert (5) and the snap-fit ​​connecting plate (7).

4. The automobile generator end cover assembly with a changeable heat dissipation duct as claimed in claim 3, characterized in that: An end cover mounting hole (903) is provided on the connecting protrusion (9), and the upper and lower end cover mounting holes (903) are respectively connected to the two ends of the bolt (10).

5. The automobile generator end cover assembly with a changeable heat dissipation duct as claimed in claim 4, characterized in that: The connecting protrusion (9) comprises a pair of connecting wings (904) and a base plate (905) respectively connected to the insertion protrusion (902) on the same side, the two connecting wings (904) are mirror-symmetrically connected to both sides of the base plate (905), and the end cover mounting hole (903) is provided at the center line of the base plate (905).

6. The automobile generator end cover assembly with a changeable heat dissipation duct as claimed in claim 5, characterized in that: The connecting wing (904) comprises an outer convex arc-shaped part (9041) and an inner convex arc-shaped part (9042) connected to each other, and the outer convex arc-shaped part (9041), the inner convex arc-shaped part (9042) and the base plate (905) enclose a deformable space (200).

7. The automobile generator end cover assembly with a changeable heat dissipation duct as claimed in claim 6, characterized in that: The cross-section of the horizontal plane of the deformation space (200) is larger than the cross-section of the horizontal plane of the bolt (10).

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