CN111237111A - Protection structure of starter - Google Patents

Abstract

The invention discloses a protection structure of a starter, which comprises a rear cover arranged on a shell through a screw, a plurality of binding posts arranged on the shell and a plurality of conducting wires arranged between the binding posts, wherein the protection structure comprises an insulating protection sleeve, a first protection cap and a second protection cap. The insulating protective sleeve is sleeved outside the lead; the first protective cap is arranged on part of the plurality of wiring posts; the second protective cap is arranged on the plurality of binding posts on the other part. The protective structure of the starter is not provided with the protective cover, so that the starter has the advantages of small arrangement space, compact layout and strong applicability.

Description

Protective structure of starter

technical field

The present invention relates to the field of engine manufacturing, in particular to a starter suitable for agricultural engines.

Background technique

The application of agricultural engines is becoming more and more extensive, and the agricultural machinery market has highlighted the phenomenon of demand for engines that can be suitable for dry land and paddy fields. With this demand, the requirements for the protection level of the starter arranged at the low position of the engine are getting higher and higher, because the starting performance of the starter directly affects the use of customers. Therefore, it is urgent to design a starter with high protection level to meet the needs of customers in the vast agricultural market.

Most of the starters 200 currently in use have a waterproof level of 6 or below, and for tractors and other equipment working in paddy fields, their engines will have to wading or soak in water, and they will work in such an environment for a long time. , the starter that is arranged at a low position and can only be protected against splashing will be greatly affected, and there will be failure modes such as water ingress and corrosion, electrical components failure, etc., which directly affects farmers' farming operations. When working in dry land, such as the engine of a wheat machine, placed in an unsealed engine room, the small and dry wheat straw will be sucked up to the surface of the engine, and the starter is arranged around the engine, which is easy to accumulate rice, corn or wheat. Wait for the leaves, and some dust. The protective cover of the starter (as shown in Figure 1 and Figure 2), because it is bridged between the relay, switch and the chassis, needs to avoid some terminals and leads, there are certain gaps, leaves and dust will follow along The gap enters the protective cover, and it is easy to burn when encountering high temperature, resulting in the failure of the car on fire. At the same time, it is not easy for the user to clean the items inside the protective cover.

In response to the above waterproof requirements, at present, there are starters with a fully sealed structure on the market: a scheme structure with a sealing ring added at the joints of each part and the wire joints. In this technical solution, no effective measures are taken to protect the lead wire of the starter stator, and there is a hidden danger of water seepage at the connection of the wire joint.

For the protection of the starter terminal, the most common one is the detachable protective cap. During the starter assembly process and after the OEM wiring, it is possible to lose or miss the protective cap on the terminal, resulting in wiring. The column is in an unguarded state.

In order to overcome the deficiencies of the above technologies, the present invention relates to a starter with a high protection level.

The information disclosed in this Background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a protective structure for a starter, which is not provided with a protective cover, so that the starter has the advantages of small layout space, compact layout and strong applicability.

In order to achieve the above object, the present invention provides a protective structure for a starter. The starter includes a rear cover arranged at the rear end of the casing through screws, a plurality of terminals arranged on the casing, and wires between the plurality of terminals. , the protective structure includes an insulating protective cover, a first protective cap and a second protective cap. The insulating protective cover is sleeved on the outside of the wire; the first protective cap is arranged on a plurality of connecting posts in a part; the second protective cap is arranged on a plurality of connecting posts in another part.

In a preferred embodiment, the second protective cap has a dovetail groove structure, and the dovetail groove structure only reserves the space required for the connection terminal.

In a preferred embodiment, the protective structure of the starter further includes a sealing gasket and a sealing ring. The gasket is arranged at the screw for connecting the rear cover with the rear end of the casing; the sealing ring is arranged at the joint between the rear cover and the rear end of the casing.

In a preferred embodiment, the protective structure of the starter further includes an O-ring and a rolling riveting magnetic pole. The O-ring is arranged at the switch of the starter; and the rolling riveting magnetic pole is arranged on the casing.

In a preferred embodiment, the protective structure of the starter further includes an outlet wire sheath and an outlet wire. The outgoing wire sheath is arranged on the casing in an interference fit with the casing; the outgoing wire adopts the connection method of hard wire and soft wire spot welding, and the hard wire part is directly injection molded on the outgoing wire sheath.

In a preferred embodiment, the outlet sheath is made of U-shaped rubber material.

Compared with the prior art, the protective structure of the starter of the present invention has the following beneficial effects: the protective structure eliminates the protective cover, so that the required layout space is small, the layout is compact, and the applicability is strong. In addition, the insulating protective cover, the first protective cap, the second protective cap and the outlet sheath are used to meet the function of the protective cover, and the sealing pads, sealing rings, O-rings, rolling riveting magnetic poles and other devices are added to strengthen the sealing effect and improve the starter motor. The overall sealing performance solves the problem of rust and difficult to start, and improves the service life. At the same time, the protective structure of the starter is optimized and designed to reduce the safety hazard of burning cars.

Description of drawings

FIG. 1 is a schematic diagram of a starter from a perspective of an embodiment of the prior art;

FIG. 2 is a schematic diagram of another perspective view of a starter according to an embodiment of the prior art;

3 is a schematic structural diagram of a protective structure of a starter according to an embodiment of the present invention;

4 is an enlarged schematic view of the structure of a second protective cap according to an embodiment of the present invention;

FIG. 5 is an enlarged schematic structural diagram of an outlet wire sheath and an outlet wire according to an embodiment of the present invention.

Description of main reference signs:

100-Starter, 1-Back cover, 2-Screw, 3-Gasket, 4-Case, 5-Sealing ring, 6-Rolling riveting pole, 7-Outlet sheath, 8-Outlet wire, 9-O type Ring, 10-insulating protective cover, 11-first protective cap, 12-second protective cap, 200-prior art starter, 201-protective cover.

Detailed ways

The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

Unless expressly stated otherwise, throughout the specification and claims, the term "comprising" or its conjugations such as "comprising" or "comprising" and the like will be understood to include the stated elements or components, and Other elements or other components are not excluded.

As shown in FIG. 1 , according to a protective structure for a starter according to a preferred embodiment of the present invention, the starter 100 includes a rear cover 1 arranged at the rear end of the casing 4 through screws 2 and a plurality of connection terminals arranged on the casing 4 And the wires arranged between the terminal and a plurality of terminals and the terminal, the protective structure includes a sealing gasket 3, a sealing ring 5, a rolling riveting magnetic pole 6, an outlet sheath 7, a lead wire 8, an O-ring 9, an insulation protection Cover 10 , first protective cap 11 and second protective cap 12 .

In some embodiments, the insulating protective sleeve 10 is sleeved on the outside of the wire to insulate and protect the wire; the first protective cap 11 is arranged on some of the plurality of terminals; the first protective cap 11 in this embodiment has a similar shape Pipe-shaped, the pipe part is tightly buckled on the terminal, and the mouthpiece part is tightly wrapped on the terminal of the insulating protective cover 10, so that the terminal is not exposed to the outside, so that the terminal and the wiring can be well guaranteed. Drainage and tightness at the terminals. The second protective cap 12 is provided on a plurality of terminals in another part. The second protective cap 12 has a dovetail groove structure. The shape of the dovetail groove structure provided in the second protective cap 12 in this embodiment is also similar to the shape of a pipe, except that a dovetail groove is opened on the side of the pipe, and the second protective cap 12 can be opened along the dovetail groove during installation. The dovetail groove structure only reserves the space required for the terminal. After the terminal is installed, it is covered back. The elasticity of the rubber itself can also ensure the waterproof effect of the terminal and the terminal. The gasket 3 is arranged at the screw 2 for connecting the rear cover 1 to the rear end of the casing 4 ; the sealing ring 5 is arranged at the joint between the rear cover 1 and the rear end of the casing 4 . The O-ring 9 is arranged at the switch of the starter; and the rolling riveting magnetic pole 6 is arranged on the casing 4 . The outgoing wire sheath 7 is provided on the casing 4 in an interference fit with the casing 4 ; The outlet sheath is made of U-shaped rubber material.

Please refer to FIG. 1 to FIG. 3 , FIG. 1 is a schematic diagram of a starter according to an embodiment of the prior art from a perspective; FIG. 2 is a schematic diagram of another perspective of a starter according to an embodiment of the prior art; A schematic structural diagram of the protective structure of the starter according to an embodiment of the invention; in some embodiments, the protective structure of the starter of the present invention cancels the drain pipe on the rear cover 1 of the starter to prevent water from being sucked back. In addition, a sealing gasket 3 is added to the screw 2 of the back cover 1 of the starter; and a sealing ring 5 is added at the connection between the back cover 1 and the casing 4 to prevent water from entering the interface. The housing 4 of the starter used to fasten the magnetic poles by the hexagon socket head screws 2, and changed them to the current rolling riveting magnetic poles 6 to prevent water ingress.

As shown in FIGS. 4 to 5 , FIG. 4 is an enlarged schematic view of the structure of the second protective cap 12 according to an embodiment of the present invention; FIG. 5 is an enlarged structure of the outgoing wire sheath 7 and the outgoing wire 8 according to an embodiment of the present invention Schematic. In some embodiments, the wires connecting between the starter relay and the switch have added insulation. At the same time, a first protective cap 11 is added to the terminal between the wires at one end connected by the starter supplier. When the starter leaves the factory, the first protective cap 11 is put on the terminal from the cigarette holder, so that the One end is integrated with the first protective cap 11 . A second protective cap 12 is added to the other end to form an integral body, which is convenient for the OEM to cover the terminal and the terminal in time after wiring. The second protective cap 12 only reserves the space required by the connection terminals. After the wires are connected, the protective cap of the dovetail groove structure is in a closed state, and leaves and dust are not easy to enter the interior. The first protective cap 11 and the second protective cap 12 are integrated with the wire and the terminal, and will not be separated from the wire during disassembly and assembly, which avoids the loss of the first protective cap 11 and the second protective cap 12, and can ensure the terminal at any time. and waterproof and dustproof effect at the terminal.

Referring to FIG. 1 again, in some embodiments, the structure of the joint between the casing 4 of the starter and the stator lead wire 8 adopts a U-shaped rubber outgoing wire sheath 7 , which is sealed and waterproof with the casing 4 by interference fit. The lead wire 8 adopts the connection method of hard wire and soft wire spot welding, and the hard wire part of the lead wire 8 is directly injection molded on the wire outlet sheath 7 to prevent external water from flowing in along the wire.

Please refer to FIG. 1 again. In some embodiments, the switch of the starter is sealed by the original rubber sleeve and replaced by an O-ring 9, which can effectively reduce the rubber material and avoid the Similar to the rubber sleeve, the rubber sleeve has no vent hole, and it is easy to be sucked and flattened during the operation of the switch. There is a vent hole, and the water coming in from the outside may flow into the switch core from the vent hole.

To sum up, the protective structure of the starter of the present invention has the following advantages: the protective structure eliminates the protective cover, so that the required layout space is small, the layout is compact, and the applicability is strong. In addition, the insulating protective cover, the first protective cap, the second protective cap and the outlet sheath are used to meet the function of the protective cover, and the sealing pads, sealing rings, O-rings, rolling riveting magnetic poles and other devices are added to strengthen the sealing effect and improve the starter motor. The overall sealing performance solves the problem of rust and difficult to start, and improves the service life. At the same time, the protective structure of the starter is optimized and designed to reduce the safety hazard of burning cars.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. These descriptions are not intended to limit the invention to the precise form disclosed, and obviously many changes and modifications are possible in light of the above teachings. The exemplary embodiments were chosen and described for the purpose of explaining certain principles of the invention and their practical applications, to thereby enable one skilled in the art to make and utilize various exemplary embodiments and various different aspects of the invention. Choose and change. The scope of the invention is intended to be defined by the claims and their equivalents.

Claims (6)

1. A protective structure of a starter, the starter includes a plurality of terminals that set up on the casing and the wire between a plurality of terminals, its characterized in that, protective structure includes:

the insulating protective sleeve is sleeved outside the lead;

a first protective cap disposed on a portion of the plurality of posts; and

a second protective cap disposed on another portion of the plurality of posts.

2. The starter motor shield structure according to claim 1, wherein the second shield cap has a dovetail groove structure which reserves only a space required for a terminal.

3. The starter motor shield structure according to claim 1, further comprising:

a gasket provided at the screw for connecting the rear cover with the rear end of the cabinet; and

and the sealing ring is arranged at the joint of the rear cover and the rear end of the machine shell.

4. The starter motor shield structure according to claim 1, further comprising:

an O-ring provided at a switch of the starter; and

and the rolling riveting magnetic pole is arranged on the machine shell.

5. The starter motor shield structure according to claim 1, further comprising:

the outlet sheath is arranged on the shell in an interference fit manner with the shell; and

and the outgoing line adopts a connection mode of spot welding of a hard line and a soft line, and the hard line part is directly injected on the outgoing line sheath.

6. The starter motor protection structure according to claim 5, wherein the outlet sheath is made of a U-shaped rubber material.

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