Starter and control device thereof

Abstract

The starter comprises a direct-current motor, a transmission and meshing device and the control device, and the control device comprises an electromagnetic switch, a motor, a transmission and meshing device and a transmission and meshing device, a relay, a storage battery terminal, a motor terminal and a motor terminal lug plate are arranged on the outer side of the supporting cover, and the relay is connected with the electromagnetic switch through the lug plate arranged in the supporting cover; the motor terminal lug plate is arranged on the outer side surface of the support cover; one end of the motor terminal lug plate is connected with the motor terminal; the other end of the motor terminal lug plate is riveted and fixed on the outer side surface of the support cover; the electromagnetic switch is connected with the supporting cover through the connecting mechanism; the connecting structure comprises a connecting plate and a sealing structure arranged on one side or two sides of the connecting plate. The connecting plate is provided with a connecting circumferential positioning structure and a connecting axial positioning structure so as to ensure that the sealing structure has stable compression amount and is connected and sealed.

Description

Technical Field

[0001] The present invention relates to a starter, in particular to a leadless starter and its control device. Background Art

[0002] The existing starters do not consider the connection and fixation between the body component and the support cover component, nor do they consider the sealing and positioning of this part. There is no axial positioning between the support cover and the connecting plate, and between the connecting plate and the body component. Glue needs to be applied to ensure sealing. Both the battery terminal tab and the motor terminal tab are inside the support cover, posing a risk of short circuit. A large amount of leads + soldering is required, and the process is complex.

[0003] There is also a way to fix the electromagnetic switch support cover on the middle cover of the starter, and fix the electromagnetic switch housing on the front cover of the starter. The electromagnetic switch housing is wrapped by the middle cover of the starter. This installation method of the electromagnetic switch is complex, has high requirements for the mating surface of the starter end cover, and increases the cost. Moreover, it is difficult to seal at the middle cover and the electromagnetic switch support cover, and the protection effect is poor. Since the electromagnetic switch housing is wrapped by the middle cover of the starter, the heat dissipation effect of the electromagnetic switch housing is poor, and the switch is prone to damage. The protector is separately arranged in a certain area of the electromagnetic switch support cover, resulting in complex wiring (terminal tab + insulated wire). Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a starter and its control device in view of the above-mentioned defects of the prior art.

[0005] To achieve the above object, the present invention provides a control device for a starter, which includes:

[0006] An electromagnetic switch;

[0007] A support cover, on the outer side of which a relay, a battery terminal, a motor terminal, and a motor terminal tab are arranged. The relay is connected to the electromagnetic switch through a terminal tab arranged inside the support cover. The motor terminal tab is arranged on the outer side surface of the support cover. One end of the motor terminal tab is connected to the motor terminal. The other end of the motor terminal tab is riveted and fixed on the outer side surface of the support cover; and

[0008] A connection mechanism, through which the electromagnetic switch is connected to the support cover. The connection structure includes a connecting plate and a sealing structure arranged on one side or both sides of the connecting plate. The connecting plate is provided with a circumferential connection positioning structure and an axial connection positioning structure to ensure that the sealing structure has a stable compression amount and connection sealing.

[0009] The above-mentioned control device for a starter further includes a protector installed inside the support cover.

[0010] The above-mentioned control device of the starter, wherein the circumferential positioning structure for connection is a circumferential positioning post arranged at the central position of the connecting plate.

[0011] The above-mentioned control device of the starter, wherein the circumferential positioning structure for connection further includes a circumferential auxiliary positioning structure arranged on one side of the circumferential positioning post.

[0012] The above-mentioned control device of the starter, wherein the axial positioning structure for connection is at least one connecting boss arranged on one or both planes of one side of the connecting plate.

[0013] The above-mentioned control device of the starter, wherein the connecting boss is a stamping protrusion, and the height of the connecting boss is 0.5 - 5 mm.

[0014] The above-mentioned control device of the starter, wherein the axial positioning structure for connection is a gasket, and the thickness of the gasket is 0.5 - 5 mm.

[0015] The above-mentioned control device of the starter, wherein the sealing structure includes a first gasket and a second gasket. The first gasket is located between the electromagnetic switch and the connecting plate; the second gasket is located between the support cover and the connecting plate.

[0016] The above-mentioned control device of the starter, wherein a first sealing protrusion is arranged on the first gasket, and a second sealing protrusion is arranged on the second gasket. The first gasket is connected to the electromagnetic switch through the first sealing protrusion, and the second gasket is connected to the connecting plate through the second sealing protrusion.

[0017] The above-mentioned control device of the starter, wherein the sealing structure is an injection-molded rubber layer.

[0018] The above-mentioned control device of the starter, wherein a support circumferential positioning structure and / or a support axial positioning structure is / are arranged on the inner side of the support cover.

[0019] The above-mentioned control device of the starter, wherein the support circumferential positioning structure is a protruding cylinder located on the inner end face of the support cover. The protruding cylinder passes through the connecting plate and partially penetrates into the housing of the electromagnetic switch to achieve circumferential positioning between the connecting plate and the electromagnetic switch.

[0020] The above-mentioned control device of the starter, wherein the support axial positioning structure is a support boss located on the inner end face of the support cover, and the height of the support boss is 0.5 - 5 mm.

[0021] The above-mentioned control device of the starter, wherein the end of the wiring piece in the support cover is riveted to the support cover, and glue is injected or the wiring piece is injection-molded on the wiring piece to achieve insulation.

[0022] The control device of the starter as described above, wherein a breather plug hole is provided on the support cover, and a breather plug is installed in the breather plug hole to achieve internal ventilation and ensure sealing at the same time.

[0023] To better achieve the above object, the present invention also provides a starter, including a DC motor, a transmission and engagement device, and a control device. The control device is respectively connected to the DC motor and the transmission and engagement device, and the transmission and engagement device is connected to the DC motor. Among them, the control device is the above-mentioned control device.

[0024] The technical effect of the present invention is as follows:

[0025] A connection mechanism is provided between the support cover and the electromagnetic switch of the present invention. There are axial and circumferential positioning structures between the connection mechanism and the housing of the electromagnetic switch, and between the support cover and the connection mechanism, ensuring stable compression amounts and connection seals for the two-side sealing structures, and reliable positioning, which is convenient for installation. The support cover, the electromagnetic switch, the connecting plate, and the gasket can be connected and fixed by screws, with a simple structure and reliable fixation. The electrical connections inside and between the electromagnetic switch and the relay are all connected through the terminal pieces on the support cover. The terminal pieces are fixed by riveting, and the motor terminal piece is located outside the support cover, which can avoid the risk of short circuit, with a simple and reliable connection, a simple technological process, easy sealing, and the external lead of the starter can be omitted.

[0026] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, but it is not intended to limit the present invention. Description of the Drawings

[0027] Figure 1 Schematic diagram of the structure of the starter according to an embodiment of the present invention;

[0028] Figure 2 For Figure 1 exploded view;

[0029] Figure 3 Exploded view of the control device according to an embodiment of the present invention;

[0030] Figure 4 Schematic diagram of the internal structure of the support cover according to an embodiment of the present invention;

[0031] Figure 5 Schematic diagram of the external structure of the support cover according to an embodiment of the present invention;

[0032] Figure 6 Schematic diagram of the structure of the connecting plate according to an embodiment of the present invention;

[0033] Figure 7 Schematic diagram of the structure of the connecting plate according to another embodiment of the present invention;

[0034] Figure 8 Schematic diagram of the connecting plate structure according to another embodiment of the present invention.

[0035] Among them, the reference numerals

[0036] 1 DC motor

[0037] 2 Transmission and meshing device

[0038] 3 Control device

[0039] 31 Electromagnetic switch

[0040] 32 Support cover

[0041] 321 Motor terminal

[0042] 322 Battery terminal

[0043] 323 Motor terminal connecting piece

[0044] 324 Battery terminal connecting piece

[0045] 325 50-terminal connecting piece

[0046] 326 Support axial positioning structure

[0047] 327 Support circumferential positioning structure

[0048] 328 50c terminal

[0049] 329 50c terminal lead

[0050] 320 Rivet

[0051] 33 Connecting mechanism

[0052] 331 Connecting plate

[0053] 332 Connecting axial positioning structure

[0054] 333 Connecting circumferential positioning structure

[0055] 334 Circumferential auxiliary positioning structure

[0056] 335 Injection-molded rubber layer

[0057] 336 First sealing gasket

[0058] 337 Second sealing gasket

[0059] 338 First sealing protrusion

[0060] 339 Second sealing protrusion

[0061] 330 Sealing protrusion

[0062] 34 Relay

[0063] 35 Protector Specific Embodiment

[0064] The structural principle and working principle of the present invention will be specifically described below in conjunction with the accompanying drawings:

[0065] See Figure 1 and Figure 2 , Figure 1 is a schematic diagram of the starter structure of an embodiment of the present invention, Figure 2 is Figure 1 exploded view. The starter of the present invention includes a DC motor 1, a transmission and engagement device 2, and a control device 3. The control device 3 is respectively connected to the DC motor 1 and the transmission and engagement device 2. The DC motor 1 is connected to the transmission mechanism engagement device. Due to the setting of the control device 3, the external leads of the starter can be omitted, making the starter a leadless starter. During operation, the vehicle inputs a start signal to the 50c terminal 328 of the control device 3. The control device 3 cooperates with the transmission and engagement device 2 to move the starter pinion forward to engage with the engine flywheel ring gear. After successful engagement, the control device 3 energizes the DC motor 1 to rotate, thereby driving the engine to start. After the start is completed, the vehicle inputs a power-off signal to the control device 3. The control device 3 cooperates with the transmission and engagement device 2 to disconnect the starter pinion from the engine flywheel ring gear and cut off the power supply to the DC motor 1, completing a start process. Since the composition, structure, mutual positional relationship, connection relationship, and functions of other parts of the starter are all relatively mature prior arts, they will not be described in detail here. Only the control device 3 of the present invention will be described in detail below.

[0066] See Figure 3 , Figure 3Explosion diagram of the control device 3 according to an embodiment of the present invention. The control device 3 of the starter of the present invention includes: an electromagnetic switch 31; a support cover 32, on the outer side of the support cover 32, there are a relay 34, a battery terminal 322, a motor terminal 321 and a motor terminal tab 323, and the relay 34 is connected to the electromagnetic switch 31 through a tab arranged inside the support cover 32; the motor terminal tab 323 is conformally attached to the outer side surface of the support cover 32; one end of the motor terminal tab 323 is connected to the motor terminal 321; the other end of the motor terminal tab 323 is riveted and fixed on the outer side surface of the support cover 32; and a connection mechanism 33, the electromagnetic switch 31 is connected to the inner side of the support cover 32 through the connection mechanism 33; the connection structure includes a connection plate 331 and a sealing structure arranged on one side or both sides of the connection plate 331; in addition to a plurality of process hole grooves on the connection plate 331, there are also a circumferential connection positioning structure 333 and an axial connection positioning structure 332, so as to ensure that when the support cover 32 is connected to the electromagnetic switch 31, the sealing structure has a stable compression amount and the connection is sealed.

[0067] In this embodiment, there is a connection plate 331 between the support cover 32 and the electromagnetic switch 31. There are a first gasket 336 and a second gasket 337 on both sides of the connection plate 331. There are axial positioning structures and circumferential positioning structures between the connection plate 331 and the electromagnetic switch 31, and between the support cover 32 and the connection plate 331, to ensure that the first gasket 336 and the second gasket 337 on both sides have a stable compression amount and ensure the connection seal here. The connection plate 331 and the first gasket 336 and the second gasket 337 are connected and fixed by screws between the support cover 32 and the electromagnetic switch 31. Wiring tabs such as a battery terminal tab 324 and a 50-terminal tab 325 are used to achieve electrical connection, and each wiring tab is riveted and fixed by a rivet 320. The battery terminal tab 324 and the 50-terminal tab 325 are located inside the support cover 32, and the motor terminal tab 323 is located outside the support cover 32, which can avoid the risk of short circuit. A boss or a gasket is arranged on the lower end surface of the connection plate 331 to form an axial positioning with the electromagnetic switch 31, and a protruding cylinder is arranged on the lower end surface of the connection plate 331 to form a circumferential positioning with the body hole of the electromagnetic switch 31; there is a protrusion on the inner side surface of the support cover 32 to form an axial positioning with the connection plate 331, and there are protruding cylinders on the support cover 32 that respectively penetrate into the connection plate 331 and partially penetrate out of the connection plate 331 and then penetrate into the electromagnetic switch 31 to form a circumferential positioning with the connection plate 331 and the electromagnetic switch 31; the motor terminal tab 323 is located outside the support cover 32, and the wiring tab is fixed and electrically connected by riveting with a rivet 320.

[0068] See Figure 4 and Figure 5 , Figure 4 Schematic diagram of the internal structure of the support cover 32 according to an embodiment of the present inventionFigure 5 Schematic diagram of the external structure of the support cover 32 according to an embodiment of the present invention. This embodiment further includes a protector 35 installed inside the support cover 32. Inside the support cover 32, there are also provided a 50c terminal 328, a 50c terminal lead 329, etc. On the inner side of the support cover 32, there are also provided a support circumferential positioning structure 327 and / or a support axial positioning structure 326. The support circumferential positioning structure 327 is a protruding cylinder located on the inner end face of the support cover 32. The protruding cylinder passes through the connecting plate 331 and partially penetrates into the housing of the electromagnetic switch 31 to achieve circumferential positioning between the connecting plate 331 and the electromagnetic switch 31. The support axial positioning structure 326 is a support boss located on the inner end face of the support cover 32. The height of the support boss is preferably 0.5 - 5 mm.

[0069] See Figure 6 , Figure 6 Schematic diagram of the structure of the connecting plate 331 according to an embodiment of the present invention. For the connecting plate 331 of this embodiment, the connecting circumferential positioning structure 333 is a circumferential positioning column provided at the central position of the connecting plate 331. The connecting circumferential positioning structure 333 further includes a circumferential auxiliary positioning structure 334 provided on one side of the circumferential positioning column. Among them, the connecting axial positioning structure 332 is at least one connecting boss provided on the plane of the connecting plate 331. The connecting boss is a stamping protrusion, that is, the axial positioning of the connecting plate 331 adopts one or more connecting bosses of stamping protrusions. The height of the connecting boss is preferably 0.5 - 5 mm.

[0070] Among them, the sealing structure includes a first sealing gasket 336 and a second sealing gasket 337. The first sealing gasket 336 is located between the electromagnetic switch 31 and the connecting plate 331; the second sealing gasket 337 is located between the support cover 32 and the connecting plate 331. Corresponding first sealing protrusions 338 and second sealing protrusions 339 are provided on the first sealing gasket 336 and the second sealing gasket 337. The first sealing gasket 336 is connected to the electromagnetic switch 31 through the first sealing protrusion 338, and the second sealing gasket 337 is connected to the connecting plate 331 through the second sealing protrusion 339. That is, seals are used on both sides of the connecting plate 331, and the sealing gaskets are installed and fixed by inserting the sealing protrusions into the corresponding holes of the connecting plate 331 and the electromagnetic switch 31.

[0071] See Figure 7 , Figure 7 Schematic diagram of the structure of the connecting plate 331 according to another embodiment of the present invention. The main difference between this embodiment and the embodiment shown in Figure 6 is that the connecting axial positioning structure 332 is a gasket, that is, the axial positioning of the connecting plate 331 adopts a gasket. The thickness of the gasket is preferably 0.5 - 5 mm.

[0072] See Figure 8 , Figure 8 which is a schematic structural view of the connecting plate 331 according to another embodiment of the present invention. The main difference between this embodiment and the embodiment shown in Figure 6 is that the sealing structure is an injection-molded rubber layer 335, and the sealing on both sides of the connecting plate 331 is achieved by the injection-molded rubber layer 335. That is, for the sealing structure of the present invention, gaskets can be used for the sealing on both sides of the connecting plate 331, which may include a first gasket 336 and a second gasket 337. The first sealing protrusion 338 and the second sealing protrusion 339 on the gasket are respectively installed corresponding to the connecting plate 331 and the holes on the body, and the first gasket 336 and the second gasket 337 can be respectively inserted into the corresponding holes of the connecting plate 331 and the body through the first sealing protrusion 338 and the second sealing protrusion 339 to achieve installation and fixation; or the sealing on both sides of the connecting plate 331 is achieved by the injection-molded rubber layer 335, and the rubber is directly injection-molded on the connecting plate 331. A sealing protrusion 330 can be provided on the injection-molded rubber layer 335, and the sealing protrusion 330 can be inserted into the corresponding hole of the body to assist in installation and fixation.

[0073] A connecting plate 331 is provided between the support cover 32 and the electromagnetic switch 31 of the present invention. Gaskets are provided on both sides of the connecting plate 331. Axial and circumferential positioning structures are provided between the connecting plate 331 and the electromagnetic switch 31 and between the support cover 32 and the connecting plate 331 to ensure a stable compression amount of the gaskets on both sides, ensure the connection and sealing here, and have reliable positioning, which is beneficial for installation. The support cover 32, the electromagnetic switch 31, the connecting plate 331, and the gasket are connected and fixed by screws passing through the support cover 32 and connecting to the body. The structure is simple and the fixation is reliable. The electrical connections inside and between the electromagnetic switch 31 and the relay 34 are all connected through the connection pieces on the support cover 32, and the connection pieces are riveted with rivets 320; after the connection pieces are riveted, glue can be injected and fixed on the connection pieces, or directly injection-molded on the connection pieces to achieve further insulation treatment; a breather plug hole can also be provided on the support cover 32, and a breather plug can be installed to achieve air exchange inside the switch while ensuring sealing. At the same time, the motor terminal connection piece 323 is located outside the support cover 32, which can avoid the risk of short circuit. The connection structure is simple and reliable, the process is simple, it is easy to seal, and the external lead of the starter is omitted.

[0074] Certainly, the present invention can also have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding changes and deformations should all fall within the protection scope of the appended claims of the present invention.

Claims

1. A control device for a starter, characterized in that, Comprising: Electromagnetic switch; Support cover, on the outer side of which there are a relay, a battery terminal, a motor terminal and a motor terminal tab. The relay is connected to the electromagnetic switch through a tab arranged inside the support cover; the motor terminal tab is arranged on the outer side surface of the support cover; one end of the motor terminal tab is connected to the motor terminal; the other end of the motor terminal tab is riveted and fixed on the outer side surface of the support cover; And Connection mechanism, the electromagnetic switch is connected to the support cover through the connection mechanism; the connection structure includes a connection plate and a sealing structure arranged on one side or both sides of the connection plate; on the connection plate, there are a connection circumferential positioning structure and a connection axial positioning structure to ensure that the sealing structure has a stable compression amount and connection sealing.

2. The control device of the starter according to claim 1, characterized in that, It further includes a protector installed inside the support cover.

3. The control device for a starter according to claim 1 or 2, characterized in that, The connection circumferential positioning structure is a circumferential positioning post arranged at the central position of the connection plate.

4. The control device for a starter according to claim 3, characterized in that, The connection circumferential positioning structure further includes a circumferential auxiliary positioning structure arranged on one side of the circumferential positioning post.

5. The control device for a starter according to claim 1 or 2, characterized in that, The connection axial positioning structure is at least one connection boss arranged on one side or both side planes of the connection plate.

6. The control device for a starter according to claim 5, characterized in that, The connection boss is a stamping protrusion, and the height of the connection boss is 0.5 - 5 mm.

7. The control device for a starter according to claim 1 or 2, characterized in that, The connection axial positioning structure is a gasket, and the thickness of the gasket is 0.5 - 5 mm.

8. The control device for a starter according to claim 1 or 2, characterized in that, The sealing structure includes a first gasket and a second gasket. The first gasket is located between the electromagnetic switch and the connection plate; the second gasket is located between the support cover and the connection plate.

9. The control device for a starter according to claim 8, characterized in that, On the first gasket, there is a first sealing protrusion, and on the second gasket, there is a second sealing protrusion. The first gasket is connected to the electromagnetic switch through the first sealing protrusion, and the second gasket is connected to the connection plate through the second sealing protrusion.

10. The control device for a starter according to claim 1 or 2, characterized in that, The sealing structure is an injection-molded rubber layer.

11. The control device of the starter according to claim 1 or 2, characterized in that, On the inner side of the support cover, there is a support circumferential positioning structure and / or a support axial positioning structure.

12. The control device of the starter according to claim 11, characterized in that, The support circumferential positioning structure is a protruding cylinder located at the inner end face of the support cover. The protruding cylinder passes through the connection plate and partially penetrates into the housing of the electromagnetic switch to achieve circumferential positioning between the connection plate and the electromagnetic switch.

13. The control device for a starter according to claim 11, characterized in that, The support axial positioning structure is a support boss located at the inner end face of the support cover, and the height of the support boss is 0.5 - 5 mm.

14. The control device for a starter according to claim 1 or 2, characterized in that, The end of the tab inside the support cover is riveted to the support cover, and glue is injected or injection molding is performed on the tab to achieve insulation.

15. The control device for a starter according to claim 1 or 2, characterized in that, On the support cover, there is a breather plug hole, and a breather plug is installed in the breather plug hole to achieve internal ventilation and at the same time ensure sealing.

16. A starter, comprising a DC motor, a transmission and engagement device, and a control device, the control device being respectively connected to the DC motor and the transmission and engagement device, the transmission and engagement device being connected to the DC motor, characterized in that, The control device is the control device according to any one of claims 1 - 15.

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