CN216198589U - Protection architecture and starter - Google Patents
Protection architecture and starter Download PDFInfo
- Publication number
- CN216198589U CN216198589U CN202122560227.XU CN202122560227U CN216198589U CN 216198589 U CN216198589 U CN 216198589U CN 202122560227 U CN202122560227 U CN 202122560227U CN 216198589 U CN216198589 U CN 216198589U
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- brush
- starter
- piece
- end cover
- bottom plate
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Abstract
The utility model provides a protection structure and a starter, relates to the technical field of starters, and aims to solve the problem that the starter is damaged due to unstable fusing time of the starter to a certain extent. The utility model provides a protection structure for a starter, which comprises a connecting piece, an insulating piece and a first elastic piece, wherein the connecting piece is arranged on the first elastic piece; the melting point of the connecting piece is higher than the lowest overheat protection temperature of the starter, threads are formed on the outer wall surface of the connecting piece, and one end of the connecting piece penetrates through an electric brush end cover of the starter to be in threaded connection with an electric brush bottom plate so that the electric brush end cover is in contact with the electric brush bottom plate; the insulating piece and the first elastic piece are sleeved on the connecting piece, one side of the insulating piece is in contact with one side, facing the electric brush bottom plate, of the electric brush end cover, and the other side of the insulating piece is in contact with the first elastic piece; one side of the first elastic piece departing from the insulating piece is abutted against the electric brush bottom plate.
Description
Technical Field
The utility model relates to the technical field of starters, in particular to a protection structure and a starter.
Background
The starter requires that the starter has a fusing protection function in order to protect the safety of the whole vehicle line. The traditional fusing protection is equivalent to a safety function, and through designing a weak point in a circuit, when the starter is electrified for a long time or a large current passes through the weak point, the resistance of the weak point is larger than that of other positions, and Q is equal to I2The heat at the available weak point of the RT is higher than that at other positions, so that the heat is increased fastest, and when the heat is accumulated to a certain degree and reaches the melting temperature of the weak point, the weak point of the fuse-link can be fused, so that the disconnection of a circuit is realized.
However, the fusing time of the fusing mode of setting the fusing part with a weak point is unstable, and the fusing cannot be easily generated under a small current, so that the problem of incapability of realizing the fusing cannot be solved.
Therefore, it is desirable to provide a protection structure and a starter to solve the problems in the prior art to some extent.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a protection structure and a starter, and aims to solve the problem that the starter is damaged due to unstable fusing time of the starter to a certain extent.
The utility model provides a protection structure for a starter, which comprises a connecting piece, a first insulating piece and a first elastic piece, wherein the first insulating piece is arranged on the connecting piece; the melting point of the connecting piece is higher than the lowest overheat protection temperature of the starter, threads are formed on the outer wall surface of the connecting piece, and one end of the connecting piece penetrates through an electric brush end cover of the starter to be in threaded connection with an electric brush bottom plate, so that the electric brush end cover is in contact with the electric brush bottom plate; the insulating piece with first elastic component set up in the brush end cover with between the brush bottom plate, just one side that the insulating piece deviates from first elastic component with brush end cover looks butt, one side that first elastic component deviates from the insulating piece with brush bottom plate looks butt.
The insulating part and the first elastic part are sleeved on the connecting part.
Specifically, the connecting piece comprises a threaded portion and an abutting portion, the threaded portion is in threaded connection with the brush bottom plate, the diameter of the abutting portion is larger than that of the threaded portion, and the abutting portion abuts against one side, away from the brush bottom plate, of the brush end cover.
The protection structure further comprises a second elastic piece, wherein the second elastic piece is sleeved on the connecting piece and is positioned between the abutting part and the electric brush end cover.
Specifically, the protection structure provided by the utility model further comprises a gasket, wherein the gasket is sleeved on the connecting piece and is positioned between the second elastic piece and the electric brush end cover.
Further, the thrust of the first elastic member to the brush end cap is smaller than the thrust of the second elastic member to the abutting portion.
More closely, the connecting piece is made of a plastic material.
Compared with the prior art, the protection structure provided by the utility model has the following advantages:
the utility model provides a protection structure for a starter, which comprises a connecting piece, a first insulating piece and a first elastic piece, wherein the first insulating piece is arranged on the connecting piece; the melting point of the connecting piece is higher than the lowest overheat protection temperature of the starter, threads are formed on the outer wall surface of the connecting piece, and one end of the connecting piece penetrates through an electric brush end cover of the starter to be in threaded connection with an electric brush bottom plate so that the electric brush end cover is in contact with the electric brush bottom plate; insulating part and first elastic component set up between brush end cover and brush bottom plate, and the insulating part deviates from one side and the brush end cover looks butt of first elastic component, and one side and the brush bottom plate looks butt that first elastic component deviates from the insulating part.
From this analysis, it was found that the screw thread formed on the outer wall surface of the connector enables the connector to be screwed into the screw hole of the brush holder plate. During the installation, form screwed one end with the connecting piece and pass brush end cover and brush bottom plate in proper order to make connecting piece and brush bottom plate threaded connection, thereby can make brush bottom plate and brush end cover laminate mutually, and then realize switching on of circuit.
When the starter works for a long time or under the working conditions of large current and the like, the temperature of the electric brush bottom plate is increased due to the heat effect of the current, when the temperature of the brush bottom plate exceeds the overheat temperature and works under the working condition of exceeding the overheat temperature for a long time, the temperature of the brush bottom plate is further increased to the overheat protection temperature, because the melting point of the connecting piece in the application is higher than the lowest overheat protection temperature of the starter, the thread formed on the connecting piece can be melted or deformed, so that the thread is invalid, because the first elastic element is arranged between the brush end cover and the brush bottom plate in the application, when the thread fails, the first elastic element pushes the brush bottom plate to the direction far away from the brush end cover, so that the brush bottom plate is separated from the brush end cover, and then realize the disconnection of return circuit, make starter motor stop work, realize the overheat protection to the starter.
Because the melting point of the connecting piece that this application provided is greater than the minimum overheat protection temperature of starter, consequently, even under the less or short operating condition of operating time of electric current, as long as the heat that the brush bottom plate produced can exceed minimum overheat protection temperature, the screw thread production that equally can make the connecting piece melts or warp, and then realizes the quick cut-off in return circuit.
In addition, the utility model also provides a starter which comprises the electric brush end cover, the electric brush bottom plate and the protection structure.
Wherein, brush bottom plate orientation one side of brush end cover is formed with the holding tank, first elastic component with the insulating part sets up in the holding tank.
Specifically, the protection structure is a plurality of, and is a plurality of the protection structure sets up along brush end cover's circumference interval, the holding tank with a plurality of the protection structure the insulating part with first elastic component one-to-one sets up.
The starter adopting the protection structure provided by the application has the advantages that the melting point of the connecting piece is greater than the lowest overheat protection temperature of the starter, so that when the temperature of the electric brush bottom plate of the starter exceeds the lowest overheat protection temperature, the thread formed by the connecting piece melts or deforms, the connecting piece is made to lose efficacy, and the electric brush bottom plate can be quickly pushed away from the electric brush end cover through the first elastic piece, so that the overheat protection of the starter is realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic overall structural diagram of a starter according to an embodiment of the present invention;
fig. 2 is a partially enlarged view of a portion a in fig. 1.
In the figure: 1-a connector; 101-a threaded portion; 102-an abutment; 2-a first elastic member; 3-an insulator; 4-a second elastic member; 5-a gasket; 6-brush end cap; 7-brush base plate; 701-accommodating the tank.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.
In the description of the embodiments of the present application, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are usually placed in when used, and are only used for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements indicated must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the embodiments of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As used herein, the term "and/or" includes any one of the associated listed items and any combination of any two or more of the items.
For ease of description, spatial relationship terms such as "above … …," "upper," "below … …," and "lower" may be used herein to describe one element's relationship to another element as illustrated in the figures. Such spatial relationship terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures.
The terminology used herein is for the purpose of describing various examples only and is not intended to be limiting of the disclosure. The singular forms also are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," and "having" specify the presence of stated features, quantities, operations, elements, components, and/or combinations thereof, but do not preclude the presence or addition of one or more other features, quantities, operations, components, elements, and/or combinations thereof.
Variations from the shapes of the illustrations as a result, for example, of manufacturing techniques and/or tolerances, may be expected. Thus, the examples described herein are not limited to the particular shapes shown in the drawings, but include changes in shape that occur during manufacturing.
The features of the examples described herein may be combined in various ways that will be apparent after understanding the disclosure of the present application. Further, while the examples described herein have a variety of configurations, other configurations are possible, as will be apparent after understanding the disclosure of the present application. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.
As shown in fig. 1 and fig. 2, the present invention provides a protection structure for a starter, including a connecting member 1, a first insulating member 3, and a first elastic member 2; the melting point of the connecting piece 1 is higher than the lowest overheat protection temperature of the starter, threads are formed on the outer wall surface of the connecting piece 1, one end of the connecting piece 1 penetrates through an electric brush end cover 6 of the starter to be in threaded connection with an electric brush bottom plate 7, and the electric brush end cover 6 is in contact with the electric brush bottom plate 7; insulating part 3 and first elastic component 2 set up between brush end cover 6 and brush bottom plate 7, and insulating part 3 deviates from one side and the 6 looks butt of brush end cover of first elastic component 2, and one side and the 7 looks butt of brush bottom plate that first elastic component 2 deviates from insulating part 3.
Compared with the prior art, the protection structure provided by the utility model has the following advantages:
the protection structure provided by the utility model can lead the connecting piece 1 to be in threaded connection with the screw hole of the brush bottom plate 7 through the thread formed on the outer wall surface of the connecting piece 1. During the installation, form the screwed one end with connecting piece 1 and pass brush end cover 6 and brush bottom plate 7 in proper order to make connecting piece 1 and 7 threaded connection of brush bottom plate, thereby can make brush bottom plate 7 laminate mutually with brush end cover 6, and then realize switching on of circuit.
When the starter works for a long time or under working conditions of large current and the like, the temperature of the electric brush bottom plate 7 is increased due to the heat effect of the current, when the temperature of the electric brush bottom plate 7 exceeds the overheating temperature and works under the working conditions of exceeding the overheating temperature for a long time, the temperature of the electric brush bottom plate 7 can be further increased to the overheating protection temperature, and because the melting point of the connecting piece 1 in the application is greater than the lowest overheating protection temperature of the starter, threads formed on the connecting piece 1 can be melted or deformed, so that the threads fail, because the first elastic piece 2 is arranged between the electric brush end cover 6 and the electric brush bottom plate 7 in the application, when the threads fail, the first elastic piece 2 can push the electric brush bottom plate 7 to the direction far away from the electric brush end cover 6, so that the electric brush bottom plate 7 is separated from the electric brush end cover 6, the disconnection of a loop is realized, and the starter motor stops working, the overheating protection of the starter is realized.
It should be added that, because the connecting piece 1 provided by the present application not only provides an overheat protection function for the starter, but also provides a connection function between the brush end cover 6 and the brush bottom plate 7, the connecting piece 1 is required to have a certain strength, and to fail when the brush bottom plate 7 reaches the minimum overheat protection temperature, so as to realize overheat protection.
Generally, the overheating temperature of the starter is above 150 ℃, but when the starter does not work under the working condition of above 150 ℃ or under the working condition of keeping around 150 ℃ for a long time, overheating protection is not needed, so the lowest overheating protection temperature in the application is higher than 150 ℃, and can be 180 ℃, 220 ℃, 280 ℃ or higher, correspondingly, the melting point of the connecting piece 1 is higher than the lowest overheating protection temperature of the starter, and therefore, preferably, the connecting piece 1 in the application can be made of engineering plastics or special plastics so as to realize that the melting point of the connecting piece 1 can be higher than the lowest overheating protection temperature.
Because the melting point of the connecting piece 1 that this application provided is greater than the minimum overheat protection temperature of starter, consequently, even under the less or short operating condition of operating time of electric current, as long as the heat that brush bottom plate 7 produced exceeds minimum overheat protection temperature, can make the screw thread production of connecting piece 1 melt or warp equally, and then realize the quick cut-off of return circuit.
When the brush holder plate 7 and the brush cover plate 6 are abutted by the connecting member 1, the first elastic member 2 is compressed, so that the first elastic member 2 obtains a restoring force that pushes the brush holder plate 7 away from the brush cover plate 6. Therefore, the first elastic element 2 in the present application is preferably a spring or an elastic washer made of a metal material, so that a problem that the brush base plate 7 and the brush end cover 6 cannot be separated due to failure of the first elastic element 2 caused by thermal deformation or melting of the first elastic element 2 can be avoided.
It should be added here that the first elastic member 2 in the present application may also be a rubber pad made of a rubber material with a higher melting point, and when a rubber pad is used, the rubber pad may also replace the insulating pad provided in the present application.
It should be further added here that the insulating member 3 in the present application is preferably made of heat-resistant rubber. When the first elastic member 2 is made of a metal material, the first elastic member 2 needs to be isolated from the brush end cover 6 by the insulating member 3, and since the brush base plate 7 generates heat, the insulating member 3 made of heat-resistant rubber can stably separate the first elastic member 2 from the brush end cover 6, thereby ensuring the effectiveness of open circuit between the brush end cover 6 and the brush base plate 7 to a certain extent. In the present application, the insulating member 3 is made of heat-resistant rubber, but may be made of other high-temperature-resistant insulating materials with higher melting points.
This application has two kinds of different modes of settings to insulating pad and first elastic component 2, and one of them sets up between brush end cover 6 and brush bottom plate 7 for insulating pad and first elastic component 2, and does not contact with connecting piece 1, and another kind is insulating piece 3 and first elastic component 2 all overlaps and locates on connecting piece 1.
Specifically, as shown in fig. 1 and fig. 2, the connecting member 1 in the present application is actually a plastic bolt, and includes a threaded portion 101 and an abutting portion 102, the threaded portion 101 is in threaded connection with the brush base plate 7, the diameter of the abutting portion 102 is larger than that of the threaded portion 101, and the abutting portion 102 abuts against a side of the brush end cover 6 away from the brush base plate 7.
In order to ensure the connection strength between the brush base plate 7 and the brush end cover 6, accordingly, the length of the threaded portion 101 and the screw hole depth of the brush base plate 7 in the present application may be increased accordingly, thereby improving the connection strength between the brush end cover 6 and the brush base plate 7 to some extent by increasing the area of the threaded connection.
As shown in fig. 1 and fig. 2, the protection structure further includes a second elastic element 4, and the second elastic element 4 is sleeved on the connecting element 1 and located between the abutting portion 102 and the brush end cap 6.
In this application, the connecting member 1 is sleeved with the second elastic member 4, and the second elastic member 4 is located between the abutting portion 102 and the brush end cover 6 and is mainly applied to the above-mentioned insulating pad and the implementation mode in which the first elastic member 2 is sleeved on the connecting member 1, preferably, the thrust of the second elastic member 4 to the brush end cover 6 in this application is smaller than the thrust of the second elastic member 4 to the abutting portion 102, that is, the resistance of the first elastic member 2 can be overcome by the second elastic member 4, so that the connection between the brush end cover 6 and the brush bottom plate 7 is more stable.
It should be added here that, since the connecting member 1 in this application is a plastic bolt, creep deformation or deformation may occur to some extent during long-term use, and therefore, the second elastic member 4 in this application may be preferably a spring or an elastic washer made of a metal material, so that the connection strength between the brush end cover 6 and the brush base plate 7 can be ensured to some extent, and the brush base plate 7 can be reliably grounded under normal operation conditions. The second elastic member 4 in this application can also adopt a rubber pad, and because the second elastic member 4 is located between the abutting portion 102 and the brush end cover 6, the heat is low here, and therefore, the rubber pad can be made without adopting a high temperature resistant rubber material.
Further preferably, as shown in fig. 1 and fig. 2, the protection structure provided by the present invention further includes a gasket 5, wherein the gasket 5 is sleeved on the connecting member 1 and is located between the second elastic member 4 and the brush end cover 6.
In addition, as shown in fig. 1, the present invention further provides a starter, which includes a brush end cover 6, a brush bottom plate 7 and the above protection structure.
The starter adopting the protection structure provided by the application has the advantages that the melting point of the connecting piece 1 is greater than the lowest overheat protection temperature of the starter, so that when the temperature of the electric brush bottom plate 7 of the starter exceeds the lowest overheat protection temperature, threads formed by the connecting piece 1 are melted or deformed, the connecting piece 1 is made to lose efficacy, and then the electric brush bottom plate 7 can be quickly pushed away from the electric brush end cover 6 through the first elastic piece 2, so that the overheat protection of the starter is realized.
As shown in fig. 1 and fig. 2, a receiving groove 701 is formed on a side of the brush base plate 7 facing the brush end cap 6, and the first elastic element 2 and the insulating element 3 are disposed in the receiving groove 701.
The insulating member 3 and the first elastic member 2 can be stably accommodated by the accommodation groove 701 formed on the brush holder plate 7.
It should be added that, when the first elastic element 2 and the insulating element 3 are sleeved on the connecting element 1 in the present application, the receiving groove 701 is communicated with the screw hole of the brush base plate 7, and the axis of the receiving groove 701 is collinear with the axis of the screw hole, and one end of the connecting element 1 passes through the receiving groove 701 and enters the screw hole, so as to achieve the connection between the brush end cover 6 and the brush base plate 7.
When the first elastic member 2 and the insulating member 3 are not fitted over the connecting member 1, the receiving groove 701 may be formed at any position of the brush base plate 7, but preferably, is formed at a position close to the screw hole, so that the brush end cap 6 can be quickly separated from the brush base plate 7 after the failure of the connecting member 1.
Because brush end cover 6 is connected through connecting piece 1 with brush bottom plate 7, consequently, for guaranteeing that the starter can normal use, protection architecture in this application is a plurality of, be connected through a plurality of connecting pieces 1 between brush end cover 6 and the brush bottom plate 7 promptly, and preferably, every connecting piece 1 all matches and has corresponding first elastic component 2, insulating part 3, second elastic component 4 and gasket 5, correspondingly, holding tank 701 sets up with a plurality of protection architecture's insulating part 3 and first elastic component 2 one-to-one.
It should be added here that the number of protection structures in the present application is at least two.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A protection structure for a starter is characterized by comprising a connecting piece, a first insulating piece and a first elastic piece;
the melting point of the connecting piece is higher than the lowest overheat protection temperature of the starter, threads are formed on the outer wall surface of the connecting piece, and one end of the connecting piece penetrates through an electric brush end cover of the starter to be in threaded connection with an electric brush bottom plate, so that the electric brush end cover is in contact with the electric brush bottom plate;
the insulating piece with first elastic component set up in the brush end cover with between the brush bottom plate, just one side that the insulating piece deviates from first elastic component with brush end cover looks butt, one side that first elastic component deviates from the insulating piece with brush bottom plate looks butt.
2. The protective structure according to claim 1, wherein the insulating member and the first elastic member are both sleeved on the connecting member.
3. The protective structure according to claim 1, wherein the connecting member includes a threaded portion that is threaded to the brush base plate, and an abutting portion that has a diameter larger than that of the threaded portion and abuts against a side of the brush end cap that faces away from the brush base plate.
4. The protective structure according to claim 3, further comprising a second elastic member that is fitted over the connecting member and is located between the abutting portion and the brush end cap.
5. The protective structure according to claim 4, further comprising a gasket, wherein the gasket is sleeved on the connecting member and is located between the second elastic member and the brush end cover.
6. The protective structure according to claim 5, wherein a pushing force of the first elastic member against the brush end cap is smaller than a pushing force of the second elastic member against the abutting portion.
7. The protective structure according to claim 1, characterized in that said connecting element is made of plastic material.
8. A starter comprising the brush end cap, the brush base plate, and the protective structure of any one of claims 1 to 7.
9. The starter according to claim 8, wherein a receiving groove is formed in a side of the brush base plate facing the brush end cap, and the first elastic member and the insulating member are disposed in the receiving groove.
10. The starter according to claim 9, wherein the protective structure is plural, plural protective structures are provided at intervals in a circumferential direction of the brush end cover, and the accommodating groove is provided in one-to-one correspondence with the insulating member and the first elastic member of the plural protective structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122560227.XU CN216198589U (en) | 2021-10-22 | 2021-10-22 | Protection architecture and starter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122560227.XU CN216198589U (en) | 2021-10-22 | 2021-10-22 | Protection architecture and starter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216198589U true CN216198589U (en) | 2022-04-05 |
Family
ID=80888032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122560227.XU Withdrawn - After Issue CN216198589U (en) | 2021-10-22 | 2021-10-22 | Protection architecture and starter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216198589U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113818979A (en) * | 2021-10-22 | 2021-12-21 | 锦州汉拿电机有限公司 | Protection architecture and starter |
-
2021
- 2021-10-22 CN CN202122560227.XU patent/CN216198589U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113818979A (en) * | 2021-10-22 | 2021-12-21 | 锦州汉拿电机有限公司 | Protection architecture and starter |
| CN113818979B (en) * | 2021-10-22 | 2024-10-15 | 锦州汉拿电机有限公司 | Protection architecture and starter |
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