CN219938093U

CN219938093U - Generator and wiring board thereof

Info

Publication number: CN219938093U
Application number: CN202321284453.2U
Authority: CN
Inventors: 张圣昌; 李帅; 任星
Original assignee: Prestolite Electric Weifang Ltd
Current assignee: Prestolite Electric Weifang Ltd
Priority date: 2023-05-23
Filing date: 2023-05-23
Publication date: 2023-10-31
Anticipated expiration: 2033-05-23

Abstract

A generator and a terminal block therefor, the generator including a terminal block mounted on a rear end cover of the generator and located sideways, comprising: a plate body; the wiring terminal holes are arranged on the plate body, and the axes of the wiring terminal holes are parallel to each other and perpendicular to the plane of the plate body; a ground bolt hole arranged on the plate body; the mounting holes are arranged on the plate body, and the axes of the mounting holes are parallel to the axes of the grounding bolt holes and the wiring terminal holes; the metal bushings are respectively embedded on the inner walls of the plurality of wiring terminal holes, the grounding bolt holes and the mounting holes; the connecting guide piece is arranged in the plate body and is respectively connected with the mounting hole and the metal bush in the grounding bolt hole; wherein the plate body is arranged on the rear end cover through a self-tapping screw which is arranged in the mounting hole; the grounding bolt is arranged in the grounding bolt hole through a fastening nut and is connected with the rear end cover through the connecting guide piece and the self-tapping screw to form a grounding loop.

Description

Generator and wiring board thereof

Technical Field

The utility model relates to a generator, in particular to a generator and a rust-proof and grounding wiring board thereof.

Background

The grounding bolt of the prior art generator is of a rear output structure, the grounding bolt and the nut can exceed the generator shield, and after the generator is mounted on the engine, the condition that the grounding bolt interferes with or is too close to the engine parts can occur, so that the use is affected. And when the generator is under the application condition that engine compartment such as agricultural machine and engineering machine exposes, because engine itself lacks the protection, can meet outside rust water and drop the condition on the wiring board, and whole car pencil insulating cap can't cover binding post completely, and binding post bottom exposes, and after rust water long time pile up, binding post bottom and rust water contact take place the corrosion, leads to binding post and end cover short circuit, and the generator produces the trouble.

Namely, the prior art has the following problems or defects:

1) The grounding bolt is easy to interfere with engine parts/pipelines and the like;

2) After the generator is assembled, the grounding bolt is positioned at the inner side of the generator, so that wiring is affected;

3) The wiring harness insulation cap of the whole vehicle cannot completely cover the wiring terminal, and the joint of the bottom of the wiring terminal and the wiring board is exposed; when the wiring board has rust water to accumulate, the wiring terminal contacts with the rust water to generate rust.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a generator and a wiring board thereof aiming at the defects in the prior art.

In order to achieve the above object, the present utility model provides a terminal block mounted on a rear end cover of a generator and located at a side of the rear end cover, the terminal block comprising:

a plate body;

the wiring terminal holes are arranged on the plate body, and the axes of the wiring terminal holes are parallel to each other and perpendicular to the upper surface of the plate body;

the grounding bolt holes are arranged on the plate body, and the axes of the grounding bolt holes are parallel to the axes of the wiring terminal holes;

the mounting hole is arranged on the plate body, and the axis of the mounting hole is parallel to the axis of the grounding bolt hole;

the metal bushings are respectively embedded on the inner walls of the wiring terminal holes, the grounding bolt holes and the mounting holes; and

the connecting guide piece is arranged in the plate body and is respectively connected with the mounting hole and the metal bushing in the grounding bolt hole;

the plate body is arranged on the rear end cover through a self-tapping screw, and the self-tapping screw is arranged in the mounting hole; the grounding bolt is arranged in the grounding bolt hole through a fastening nut, and is connected with the rear end cover through the connecting guide piece and the self-tapping screw to form a grounding loop.

The wiring board, wherein the bolt head of the grounding bolt is contacted with the connecting lead piece to form electric connection; the two ends of the connecting guide piece are respectively and electrically connected with the mounting hole and the metal bushing in the grounding bolt hole; the self-tapping screw is respectively and electrically connected with the rear end cover and the metal bushing in the mounting hole to form a grounding loop.

The wiring board is characterized in that the board body is an injection molding piece, and the connecting guide piece and the metal bushing are fixed in the board body during injection molding of the board body.

The wiring board is characterized in that bosses for preventing the wiring terminals from being rusted are respectively arranged on the upper surface of the board body corresponding to the wiring terminal holes.

The wiring board is characterized in that the lug boss is a plurality of independent round tables respectively corresponding to each wiring terminal hole; or, the boss is an integral boss covering each wiring terminal hole.

The wiring board comprises a body and connecting holes arranged at two ends of the body, wherein the two ends of the body are respectively provided with an extended convex surface, the connecting holes are arranged on the convex surfaces, the two convex surfaces are connected through connecting sheets, the distance between the connecting holes is equal to the hole distance between the mounting holes and the grounding bolt holes, and the connecting holes are respectively matched with the mounting holes and the grounding bolt holes.

The wiring board comprises a body and connecting holes arranged at two ends of the body, wherein the distance between the connecting holes at two ends is equal to the hole distance between the mounting holes and the grounding bolt holes, and the connecting holes are respectively matched with the mounting holes and the grounding bolt holes.

The wiring board is characterized in that the longitudinal section of the body is of a rectangular or a plurality of rectangular sequentially overlapped step structures.

The wiring board, wherein the plurality of wiring terminal holes comprise a positive electrode end hole, a phase end hole, a neutral point end hole and/or an indicator light end hole.

In order to better achieve the above object, the present utility model also provides a generator, wherein the generator comprises the wiring board.

The utility model has the technical effects that:

the wiring board has simple structure, can be integrally formed, does not change the original process route, and has high reliability; after the wiring board is installed, the grounding bolt is positioned on the side surface of the generator, so that the axial distance of the generator is shortened, wiring is convenient, interference is avoided, and the problem that the grounding bolt is too close to an air inlet pipe of the engine after the generator is installed on the engine in the prior art is avoided; the boss structure of the wiring board can prevent the bottom of the wiring terminal from being exposed, so that the wiring terminal is prevented from being corroded, and the reliability is improved; meanwhile, the boss structure is more beneficial to terminal wiring, and the whole vehicle wiring is more convenient; the plane of the wiring nut is higher than the plane of the wiring board, and wiring is not affected. Through QC/T729 vibration test and simulation test, the wiring board is good in plate shape and normal in function.

The utility model will now be described in more detail with reference to the drawings and specific examples, which are not intended to limit the utility model thereto.

Drawings

FIG. 1 is a schematic diagram of a generator according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram illustrating a terminal assembly according to an embodiment of the present utility model;

FIG. 3 is a cross-sectional view of FIG. 2;

FIG. 4 is a schematic view of a patch panel installation according to one embodiment of the present utility model;

FIG. 5 is a schematic diagram of a circuit board structure according to an embodiment of the present utility model;

FIG. 6 is a schematic diagram of a connecting tab according to an embodiment of the present utility model;

FIG. 7 is a top view of FIG. 6;

FIG. 8 is a schematic view of a circuit board structure according to another embodiment of the present utility model;

FIG. 9 is a schematic view of a connecting tab according to another embodiment of the present utility model;

fig. 10 is a top view of fig. 9.

Wherein reference numerals are used to refer to

1 front end cover

2 rear end cap

3 shield

4 belt pulley

5 wiring board

51 board body

511 boss

52 connection lead piece

521 body

522 connecting hole

523 convex surface

524 connecting sheet

53 wiring terminal hole

531 positive electrode end hole

532 pilot lamp end hole

54 grounding bolt hole

55 mounting hole

56 metal bushing

57 self-tapping screw

58 grounding bolt

59 fastening nut

6 binding post

Detailed Description

The structural and operational principles of the present utility model are described in detail below with reference to the accompanying drawings:

referring to fig. 1, fig. 1 is a schematic diagram of a generator according to an embodiment of the utility model. The generator comprises a front end cover 1, a rear end cover 2, a shield 3, a belt pulley 4 and a wiring board 5, wherein the wiring board 5 is used for being connected with and grounded to each wiring terminal 6, the front end cover 1 and the rear end cover 2 jointly enclose a containing space, a stator and a rotor are arranged in the containing space, the belt pulley 4 of the generator is connected with a driving wheel of an engine through a belt, after the whole generator is started, the driving wheel drives the belt pulley 4 to rotate, the belt pulley 4 drives the rotor to rotate, at the moment, a magnetic field of a stator assembly is cut by the rotor to generate current, and the current is rectified through a rectifier bridge to supply power to the whole generator. Since the components, structures, mutual positional relationships, connection relationships, functions and the like of other parts of the generator are mature prior art, the details are not described herein, and only the wiring board 5 of the present utility model will be described in detail below.

Referring to fig. 2 and 3, fig. 2 is a schematic installation view of a connection terminal 6 according to an embodiment of the present utility model, and fig. 3 is a sectional view of fig. 2. A terminal block 5 according to the present utility model is mounted on a rear end cover 2 of a generator and located on a side surface of the rear end cover 2, the terminal block 5 comprising: a plate body 51; a plurality of terminal holes 53 provided on the board body 51, axes of the terminal holes 53 being parallel to each other and perpendicular to an upper surface of the board body 51; a ground bolt hole 54 provided in the plate body 51, the axis of the ground bolt hole 54 being parallel to the axes of the plurality of terminal holes 53; a mounting hole 55 provided in the plate body 51, the axis of the mounting hole 55 being parallel to the axis of the ground bolt hole 54; metal bushings 56 respectively embedded on the inner walls of the plurality of terminal holes 53, the ground bolt holes 54 and the mounting holes 55; and a connection tab 52 provided in the plate body 51 and connected to the mounting hole 55 and the metal bushing 56 in the ground bolt hole 54, respectively; wherein the plate body 51 is mounted on the rear end cover 2 through self-tapping screws 57, and the self-tapping screws 57 are mounted in the mounting holes 55; the grounding bolt 58 is mounted in the grounding bolt hole 54 by a fastening nut 59, and is connected with the rear end cover 2 by the connecting tab 52 and the tapping screw 57 to form a grounding circuit. Namely, a connecting guide piece 52 is added between a bolt mounting hole 55 and a self-tapping screw 57 hole of the wiring board 5, and after a grounding bolt 58 is fastened to the wiring board 5 through a nut, the bolt head of the grounding bolt 58 is contacted with the connecting guide piece 52 to form electric connection; the connecting lead piece 52 and the metal bushing 56 are fixed on the wiring board 5 when the wiring board 5 is injection molded, and the connecting lead piece 52 and the metal bushing 56 form electric connection; after the wiring board 5 is mounted on the rear end cover 2 through the self-tapping screw 57, the self-tapping screw 57 is electrically connected with the rear end cover 2, and the self-tapping screw 57 is electrically connected with the connecting guide piece 52 and the metal bushing 56 on the wiring board 5; the grounding bolt 58 is connected with the tapping screw 57 through the connecting guide piece 52 to form an electric connection, then a grounding loop is formed, and the mounting hole 55 of the tapping screw 57 is also provided with a metal bushing 56.

In this embodiment, the plate 51 is preferably an injection molded part, and the connecting tab 52 and the metal bush 56 are fixed in the plate 51 when the plate 51 is injection molded. The upper surface of the plate body 51 is provided with bosses 511 for preventing rust of the terminal 6 corresponding to the plurality of terminal holes 53, respectively. Wherein, the boss 511 may be a plurality of independent circular truncated cones corresponding to each of the terminal holes 53; alternatively, the boss 511 may be an integral boss 511 covering each of the terminal holes 53. The height of the boss 511 can be set to be 5mm,10mm or 18mm in diameter based on the specifications of the grounding bolt 58 and the nut, the specifications of the grounding bolt 58 and the nut are different, and the sizes of the bosses 511 are also different. A metal bushing 56 may be disposed in each of the terminal holes 53 corresponding to the boss 511 to increase the strength of the boss 511, and the metal bushing 56 may be fixed in the boss 511 when the terminal block 5 is injection-molded.

Referring to fig. 4 and 5, fig. 4 is a schematic installation view of a patch panel 5 according to an embodiment of the present utility model, and fig. 5 is a schematic structural view of the patch panel 5 according to an embodiment of the present utility model. The plurality of terminal holes 53 of the present embodiment may include a positive terminal hole 531 for mounting a positive terminal b+; a phase end hole 532 for mounting a phase end terminal W (such as a tachometer, etc.), the two ends of the wiring board 5 are respectively provided with mounting holes 55, and a ground bolt hole 54 (i.e., a ground end or a negative end E) is provided adjacent to one of the mounting holes 55; each terminal hole 53 is respectively and correspondingly provided with a corresponding terminal 6, and a ground bolt 58 is provided in the ground bolt hole 54 (i.e., the negative end E). Wherein the bolt head of the grounding bolt 58 contacts the connecting tab 52 to form an electrical connection; the two ends of the connecting tab 52 are electrically connected with the mounting hole 55 and the metal bushing 56 in the grounding bolt hole 54 respectively; the tapping screw 57 is electrically connected to the rear cover 2 and the metal bush 56 in the mounting hole 55, respectively, to form a ground circuit.

Referring to fig. 6 and 7, fig. 6 is a schematic structural diagram of a connecting tab 52 according to an embodiment of the utility model, and fig. 7 is a top view of fig. 6. The connecting tab 52 of this embodiment includes a main body 521 and connecting holes 522 provided at both ends of the main body 521, the distance between the connecting holes 522 at both ends is equal to the hole distance between the mounting hole 55 and the ground bolt hole 54, and the connecting holes 522 are respectively adapted to the mounting hole 55 and the ground bolt hole 54. The longitudinal section of the main body 521 may be rectangular (i.e. the main body 521 is a planar structure) or a plurality of steps stacked in sequence (i.e. the main body 521 is a stepped structure as shown in fig. 6).

Referring to fig. 8-10, fig. 8 is a schematic structural view of a wiring board 5 according to another embodiment of the present utility model, fig. 9 is a schematic structural view of a connection tab 52 according to another embodiment of the present utility model, and fig. 10 is a top view of fig. 9. The wiring board 5 of the present embodiment, wherein the plurality of wiring terminal holes 53 may include a positive terminal hole 531 for mounting a positive terminal b+; a phase end hole 532 for mounting the phase end terminal W; a neutral point end hole for mounting the neutral terminal N; and/or pilot lamp end hole for mounting pilot lamp end D+, the connecting tab 52 corresponding to the plurality of terminal holes 53 comprises a body 521 and connecting holes 522 arranged at two ends of the body 521, the connecting holes 522 arranged at two ends of the body 521 are respectively provided with extended convex surfaces 523, the connecting holes 522 are arranged on the convex surfaces 523, the two convex surfaces 523 are connected by a connecting piece 524, the distance between the two connecting holes 522 is equal to the hole distance between the mounting hole 55 and the grounding bolt hole 54, namely the distance L between the two connecting holes 522 ₀ According to the E terminal position adjustment, two connecting holes 522 are respectively connected with the mounting holes 55 and the grounding boltThe aperture 54 is adapted.

The utility model sets up the connection lead 52 in the patch panel 5 in order to connect the self-tapping screw 57 and the grounding bolt 58, the grounding bolt 58 is installed on patch panel 5, the grounding bolt 58 connects with the back end cap 2 of the generator through the fastening nut 59, the connection lead 52, the self-tapping screw 57 to form the grounding loop, the grounding bolt 58 is fixed on patch panel 5 through the fastening nut 59, the bolt head of the grounding bolt 58 contacts with the connection lead 52 to form the electrical connection; the connecting lead piece 52 and the metal bushing 56 are fixed on the wiring board 5 when the wiring board 5 is injection molded, and the connecting lead piece 52 and the metal bushing 56 form electric connection; the wiring board 5 is fixed on the rear end cover 2 through a self-tapping screw 57, and the self-tapping screw 57 is electrically connected with the connecting guide piece 52 and the metal bushing 56 on the wiring board 5; after the self-tapping screw 57 is fastened on the rear end cover 2, the self-tapping screw 57 is electrically connected with the rear end cover 2, and finally a ground loop is formed. Meanwhile, the lug boss 511 structure is arranged at the position of the wiring terminal hole 53 of the wiring board 5 for fixing the wiring terminal 6 such as B+, D+, W, N, E and the like, so that the corrosion of the wiring terminal 6 can be effectively avoided; the metal bushing 56 is provided in the hole to increase the strength of the boss 511, and the metal bushing 56 in the mounting hole 55 of the tapping screw 57 to increase the connection strength.

The wiring board 5 has simple structure, can be integrally formed, does not change the original process route, and has high reliability; after the wiring board 5 is installed, the grounding bolt 58 is positioned on the side surface of the generator, so that the axial distance of the generator is shortened, wiring is convenient, interference is avoided, and the problem that the grounding bolt 58 is too close to an air inlet pipe of the engine after the generator is installed on the engine in the prior art is avoided; the boss 511 structure of the wiring board 5 can prevent the bottom of the wiring terminal 6 from being exposed, prevent the wiring terminal 6 from being corroded, and improve the reliability; meanwhile, the boss 511 structure is more beneficial to terminal wiring, and the whole vehicle wiring is more convenient; the plane of the wiring nut is higher than the plane of the wiring board 5, and wiring is not affected. Through QC/T729 vibration test and simulation test verification, the wiring board 5 is good in state and normal in function after the test is completed.

Of course, the present utility model is capable of other various embodiments and its several details are capable of modification and variation in light of the present utility model, as will be apparent to those skilled in the art, without departing from the spirit and scope of the utility model as defined in the appended claims.

Claims

1. A wiring board (5) characterized by being mounted on a rear end cover (2) of a generator and being located at a side face of the rear end cover (2), the wiring board (5) comprising:

a plate body (51);

a plurality of terminal holes (53) provided on the board body (51), axes of the terminal holes (53) being parallel to each other and perpendicular to an upper surface of the board body (51);

a ground bolt hole (54) provided in the plate body (51), the axis of the ground bolt hole (54) being parallel to the axes of the plurality of terminal holes (53);

a mounting hole (55) provided in the plate body (51), the axis of the mounting hole (55) being parallel to the axis of the ground bolt hole (54);

metal bushings (56) respectively embedded on the inner walls of the plurality of wiring terminal holes (53), the grounding bolt holes (54) and the mounting holes (55); and

the connecting guide piece (52) is arranged in the plate body (51) and is respectively connected with the mounting hole (55) and the metal bushing (56) in the grounding bolt hole (54);

wherein the plate body (51) is arranged on the rear end cover (2) through a self-tapping screw (57), and the self-tapping screw (57) is arranged in the mounting hole (55); the grounding bolt (58) is installed in the grounding bolt hole (54) through a fastening nut (59), and is connected with the rear end cover (2) through the connecting guide piece (52) and the self-tapping screw (57) to form a grounding loop.

2. The terminal block (5) of claim 1, wherein a bolt head of the ground bolt (58) is in contact with the connection tab (52) to form an electrical connection; both ends of the connecting guide piece (52) are respectively and electrically connected with the mounting hole (55) and the metal bushing (56) in the grounding bolt hole (54); the self-tapping screw (57) is electrically connected with the rear end cover (2) and the metal bushing (56) in the mounting hole (55) respectively to form a grounding loop.

3. The terminal block (5) according to claim 1 or 2, wherein the plate body (51) is an injection-molded part, and the connecting tab (52) and the metal bush (56) are fixed in the plate body (51) at the time of injection molding of the plate body (51).

4. Terminal block (5) according to claim 1 or 2, characterized in that the upper surface of the block body (51) is provided with a boss (511) for preventing corrosion of the terminal (6) corresponding to the plurality of terminal holes (53), respectively.

5. The terminal block (5) of claim 4, wherein the boss (511) is a plurality of independent bosses corresponding to each of the terminal block holes (53), respectively; or, the boss (511) is an integral boss (511) covering each of the terminal holes (53).

6. The wiring board (5) according to claim 1 or 2, wherein the connection tab (52) comprises a body (521) and connection holes (522) arranged at two ends of the body (521), two ends of the body (521) are respectively provided with extended convex surfaces (523), the connection holes (522) are arranged on the convex surfaces (523), the two convex surfaces (523) are connected through a connection sheet (524), the distance between the two connection holes (522) is equal to the hole distance between the mounting hole (55) and the grounding bolt hole (54), and the connection holes (522) are respectively matched with the mounting hole (55) and the grounding bolt hole (54).

7. The terminal block (5) according to claim 1 or 2, wherein the connection tab (52) comprises a body (521) and connection holes (522) provided at both ends of the body (521), a distance between the connection holes (522) at both ends being equal to a hole distance between the mounting hole (55) and the ground bolt hole (54), the connection holes (522) being respectively fitted with the mounting hole (55) and the ground bolt hole (54).

8. The terminal block (5) of claim 7, wherein the longitudinal section of the body (521) is a rectangular or a plurality of rectangular sequentially stacked step structures.

9. Terminal block (5) according to claim 1 or 2, characterized in that the plurality of terminal holes (53) comprises a positive terminal hole (531), a phase terminal hole, a neutral terminal hole and/or an indicator lamp terminal hole (532).

10. Generator, characterized in that it comprises a terminal block (5) according to any one of claims 1 to 9.