Relay and starter comprising same

Abstract

The utility model relates to a relay, which comprises an upper shell, the upper shell extends outwards to form a socket with an accommodating cavity, and a first pin and a second pin are arranged in the socket; the boss is arranged on the outer side of the upper shell and is adjacent to the socket, a first binding post is arranged in the boss, and the first binding post is connected with the second pin through a first connecting piece; the second binding post upwards extends out of the upper end of the upper shell and is connected with the first contact pin through a second connecting piece; and the third binding post upwards extends out of the upper end of the upper shell and is connected with the second binding post. According to the relay provided by the utility model, the temperature control switch can be directly connected with the relay in series without being connected with the relay through an adapter, so that the space occupied by the adapter and connecting parts are reduced; the invention further relates to a starter which comprises the relay and a temperature control switch.

Description

Technical Field

[0001] The utility model belongs to the technical field of starters, and particularly relates to a relay and a starter including the same. Background Art

[0002] Long-term energized operation of the starter will cause damage to the main components and pose a safety risk. Connecting a temperature control switch in series in the relay control coil circuit and using the temperature control switch to detect the temperature of the starter main body to respond to opening and closing to adjust the on-off of the control signal can reduce the possibility of long-term energized operation. Therefore, starters with temperature control switches are increasing day by day.

[0003] Most of the current temperature control switch starters complete the series connection of the temperature control switch and the relay control circuit in the way of relay (including wiring harness) + adapter (including restraint and fixing components) + temperature control switch (including wiring harness). This connection method has many parts and requires additional fixing and restraint, which will undoubtedly bring higher risks of vibration failure and misconnection; in addition, at present, the temperature control switch mainly uses a metal shell style and is sealed by a sealing rubber, so it has a large volume; the fixing method of the temperature control switch uses a press-fitting style to fasten the temperature control switch in the required position, and the installation position is limited. Summary of the Utility Model

[0004] In order to solve the above problems in the prior art, the purpose of the present utility model is to provide a relay and a starter including the same, and the specific technical solutions are as follows:

[0005] A relay includes an upper housing, the upper housing extends outward to form a socket with a receiving cavity, and a first pin and a second pin are arranged inside the socket; a boss, the boss is arranged outside the upper housing and adjacent to the socket, a first terminal is arranged inside the boss, and the first terminal is connected to the second pin through a first connecting piece; a second terminal, the second terminal extends upward from the upper end of the upper housing and is connected to the first pin through a second connecting piece; and a third terminal, the third terminal extends upward from the upper end of the upper housing and is connected to the second terminal. The relay of the present application can directly connect the temperature control switch in series with the relay, without the need to connect the relay through an adapter, reducing the space occupied by the adapter and the connecting components, achieving cost reduction, and having a simple connection, reducing the vibration failure risk and operation misconnection risk of multiple connection methods.

[0006] Optionally, the relay further includes a lower housing, which is a cylindrical structure with an inner cavity. A coil is arranged inside the lower housing. One end of the coil is connected to the second terminal, and the other end of the coil is connected to the third terminal. The two ends of the coil inside the relay are led out through the second terminal and the third terminal to supply power to the coil.

[0007] Optionally, a protective cap is arranged at the upper end of the relay. The protective cap has a cavity and is sleeved on the outer periphery of the second terminal to wrap the second terminal. The second terminal in this application is used to lead out the coil inside the relay. The second terminal is also connected to the first pin and is powered from the first pin. Therefore, no other components are externally connected to the second terminal. To ensure safety and accurate wiring, the second terminal is wrapped with a protective cap.

[0008] Optionally, the relay is further provided with a fourth terminal and a fifth terminal, and a partition is also provided. The fourth terminal, the fifth terminal, the second terminal, and the third terminal are separated by the partition. The four terminals at the upper end of the relay are separated by the partition so that the staff can distinguish these four terminals to achieve fast and accurate wiring.

[0009] A starter includes a starter main body; a switch assembly connected to the starter main body; the relay according to any one of the above, the relay is fixedly connected to the starter main body and electrically connected to the switch assembly; a temperature control switch connected to the starter main body and connected to the relay. The starter is used to start the vehicle engine.

[0010] Optionally, the starter main body includes a connecting wire, and a terminal is arranged at one end of the connecting wire. The terminal is connected to the temperature control switch. The connecting wire of the starter is connected to the starter motor to supply current to start the starter motor; the temperature control switch is installed on the connecting wire to detect the temperature of the starter.

[0011] Optionally, the temperature control switch is fixedly connected to the terminal through a heat shrinkable tube. The body of the temperature control switch is wrapped and fixed on the connecting wire through a glue-containing heat shrinkable tube, and the sealing of the temperature control switch is achieved, which can achieve the functions of fixing, waterproofing, dustproofing, and anti-mud.

[0012] Optionally, the temperature control switch has a first wire and a second wire. The first wire is connected to the first terminal, and the second wire is connected to the third terminal. The temperature control switch is directly connected to the relay without the need for a converter, reducing the use of components.

[0013] Optionally, the switch assembly is provided with a first connection end and a second connection end. The first connection end and the fourth terminal are connected by an electric wire, and the second connection end and the fifth terminal are connected by an electric wire. The first connection end is also used to connect to the positive pole of the storage battery to provide power for the starter; the second connection end is connected to the starter motor and is used to start the starter motor after being powered on; by turning on and off the second terminal and the third terminal of the relay, the connection and disconnection of the fourth terminal and the fifth terminal are controlled. Description of the Drawings

[0014] For other features and advantages of the present utility model, refer to the following description, which explains the present utility model in more detail based on the embodiments in conjunction with the drawings.

[0015] Figure 1 is a schematic structural diagram of the relay hiding the upper housing of the present application;

[0016] Figure 2 is a schematic structural diagram of the relay of the present application;

[0017] Figure 3 is a schematic structural diagram of the connection between the temperature control switch and the relay of the present application;

[0018] Figure 4 is a schematic structural diagram of the connection between the temperature control switch and the relay from another perspective of the present application;

[0019] Figure 5 is a schematic structural diagram of the starter of the present application;

[0020] Figure 6 is a schematic diagram of the principle of the starter of the present application;

[0021] Figure 7 is a schematic structural diagram of the existing temperature control switch;

[0022] Figure 8 is a schematic installation structure diagram of the temperature control switch of the present application.

[0023] Among them, the main reference signs in each drawing are as follows:

[0024] 1 - Relay, 10 - Base, 11 - Upper housing, 12 - Socket, 121 - First pin, 122 - Second pin, 13 - Boss, 14 - Lower housing, 15 - First terminal, 16 - Second terminal, 17 - Third terminal, 18 - Fourth terminal, 19 - Fifth terminal; 21 - Starter body, 22 - Switch assembly, 221 - First connection end, 222 - Second connection end, 223 - Third connection end, 23 - Connecting wire, 24 - Terminal; 3 - Temperature control switch, 33 - First wire, 32 - Second wire; 41 - First connecting piece, 42 - Second connecting piece, 51 - Annular plate, 52 - First arc plate, 53 - Second arc plate; 61 - First wiring, 62 - Second wiring; 71 - Sealing rubber, 72 - Pressing piece; 8 - Heat shrinkable tube. Detailed implementation mode

[0025] The preferred implementation modes of the present invention will be described below with reference to the accompanying drawings. It should be noted that the terms "upper", "lower", "left", "right", "front", "rear" and similar expressions used herein are only for the purpose of illustration and are not intended to limit the present invention.

[0026] A relay includes an upper housing 11. The upper housing 11 extends outward to form a socket 12 with a receiving cavity. Inside the socket 12 are provided a first pin 121 and a second pin 122; a boss 13, the boss 13 is arranged on the outside of the upper housing 11 and adjacent to the socket 12. Inside the boss 13 is provided a first terminal 15, and the first terminal 15 is connected to the second pin 122 through a first connecting piece 41; a second terminal 16, the second terminal 16 extends upward out of the upper end of the upper housing 11 and is connected to the first pin 121 through a second connecting piece 42; and a third terminal 17, the third terminal 17 extends upward out of the upper end of the upper housing 11 and is connected to the second terminal 16.

[0027] In some embodiments, the relay further includes a lower housing 14. The lower housing 14 is a cylindrical structure with an inner cavity. Inside the lower housing 14 is provided a coil. One end of the coil is connected to the second terminal 16, and the other end of the coil is connected to the third terminal 17.

[0028] As Figure 1 And Figure 2As shown in the figure, the relay of the present application includes a base 10, and two mounting holes are provided in the base 10 for mounting the relay on the starter main body 21; the relay includes a lower housing 14 and an upper housing 11 that are connected to each other. The lower housing 14 is a cylindrical structure with a cavity. An armature core is arranged inside the lower housing 14 along the same axial direction as the lower housing 14. A coil is arranged on the outer periphery of the armature core. A second terminal 16 and a third terminal 17 are arranged above the coil. The two ends of the coil are wired upward through the openings on the upper end surface and are respectively connected to the second terminal 16 and the third terminal 17. Specifically, the first wiring 61 is connected to the second terminal 16, and the second wiring 62 is connected to the third terminal 17; the lower half parts of the second terminal 16 and the third terminal 17 are arranged inside the lower housing 14, and the upper half parts of the second terminal 16 and the third terminal 17 are arranged in the upper housing 11 and both protrude from the upper end of the upper housing 11 and extend upward for a part. External threads are provided on the parts where the second terminal 16 and the third terminal 17 extend upward, so as to be fixedly connected to the lead wires.

[0029] As Figure 2 shown in the figure, the upper housing 11 has a cylindrical body. A circular ring is provided at the lower end of the upper housing 11 to be sleeved on the outer ring of the lower housing 14 for connection with the lower housing 14. A socket 12 is arranged outward at a position on the outer side of the upper housing 11 close to the second terminal 16. The socket 12 is a structure with a receiving cavity. A first pin 121 and a second pin 122 are arranged inside the socket 12. The first pin 121 is the positive pole of the current input of the control end of the electronic control unit, and the second pin 122 is the negative pole of the current input of the control end of the electronic control unit.

[0030] As Figure 2 shown in the figure, a boss 13 is also arranged on the outer side of the upper housing 11 adjacent to the socket 12. A first terminal 15 is arranged inside the boss 13. External threads are provided on the upper half part of the first terminal 15, so as to be fixedly connected to the lead wires; in the present application, the first terminal 15 and the second pin 122 are connected through a first connecting piece 41, and the second terminal 16 and the first pin 121 are connected through a second connecting piece 42. Specifically, circular holes are respectively opened at both ends of the first connecting piece 41 so as to be sleeved on the outer periphery of the first terminal 15 and the second pin 122 and be in contact with them. Circular holes are respectively opened at both ends of the second connecting piece 42 so as to be sleeved on the outer periphery of the second terminal 16 and the first pin 121 and be in contact with them. Therefore, the current is connected between the first terminal 15 and the second pin 122, and the current is connected between the second terminal 16 and the first pin 121.

[0031] In some embodiments, a protective cap 161 is arranged at the upper end of the relay. The protective cap 161 has a cavity and is sleeved on the outer periphery of the second terminal 16 to wrap the second terminal 16.

[0032] As Figure 2 shown, the second terminal 16 of the present application is connected to the first pin 121 through the second connecting piece 42. The first pin 121 is the input end of the current, and the current then enters the coil of the relay through the second terminal 16 and then reaches the third terminal 17. Since there is no external lead for the second terminal 16 in the present application, a protective cap 161 is provided to cover the outer circle of the second terminal 16. The protective cap 161 is made of insulating material to ensure the safety and accurate wiring during the use of the relay, and prevent misconnection to the second terminal 16, which may cause the relay to malfunction.

[0033] In some embodiments, the relay is further provided with a fourth terminal 18 and a fifth terminal 19, and a partition 5 is also provided. The fourth terminal 18, the fifth terminal 19, the second terminal 16 and the third terminal 17 are separated by the partition 5.

[0034] As Figure 2 shown, a partition 5 is provided at the upper end of the relay. The partition 5 is used to separate the second terminal 16, the third terminal 17, the fourth terminal 18 and the fifth terminal 19 of the relay. The partition 5 includes an annular plate 51 forming an annular closed structure and a first arc plate 52 and a second arc plate 53 connected to the annular plate 51. The first arc plate 52 and the second arc plate 53 bend and extend in opposite directions so as to divide the upper end of the upper housing 11 of the relay into four regions. Therefore, the second terminal 16 is arranged in the region between the annular plate 51 and the first arc plate 52, the third terminal 17 is arranged in the region between the annular plate 51 and the second arc plate 53, the fourth terminal 18 is arranged in the region between the first arc plate 52 and the second arc plate 53, and the fifth terminal 19 is arranged in the region inside the annular plate 51. Such an arrangement facilitates the production personnel to distinguish these four terminals for quick and accurate external wiring.

[0035] The present application also relates to a starter, which includes a starter main body 21; a switch assembly 22, the switch assembly 22 is connected to the starter main body 21; any one of the above-mentioned relays, the relay is fixedly connected to the starter main body 21 and electrically connected to the switch assembly 22; and a temperature control switch 3, the temperature control switch 3 is connected to the starter main body 21 and connected to the relay.

[0036] In some embodiments, the starter main body 21 includes a connecting wire 23, and the temperature control switch 3 is connected to the connecting wire 23.

[0037] In some embodiments, the temperature control switch 3 is fixedly connected to the connecting wire 23 through a heat shrinkable tube 8.

[0038] In some embodiments, the temperature control switch 3 has a first wire 33 and a second wire 32. The first wire 33 is connected to the first terminal 15, and the second wire 32 is connected to the third terminal 17.

[0039] In some embodiments, the switch assembly 22 is provided with a first connection end 221 and a second connection end 222. The first connection end 221 and the fourth terminal 18 are connected by an electric wire, and the second connection end 222 and the fifth terminal 19 are connected by an electric wire.

[0040] As Figure 5 shown, the starter includes a starter main body 21. An installation platform is arranged on the outer side of the starter main body 21. The installation platform is provided with a screw hole. The base 10 of the relay is fixedly connected to the installation platform. In this example, it is connected by screws. In some examples, other fixing methods can also be used, which are not specifically limited in this application; an outer side of the starter main body 21 is provided with a switch assembly 22. The switch assembly 22 is an electromagnetic switch of the starter and is a component for controlling the operation of the starter; a first connection end 221, a second connection end 222 and a third connection end 223 are arranged on the switch assembly 22. The third connection end 223 and the starter main body 21 are connected by a connection wire 23. The connection wire 23 is connected to the starter motor so as to conduct current to drive the starter motor.

[0041] As Figure 7 shown, a temperature control switch in an existing starter is shown. The body of the temperature control switch 3 is sealed inside a sealing rubber 71. A press-fitting piece 72 is arranged at the lower end of the sealing rubber 71. The temperature control switch 3 is installed on the terminal 24 of the starter through the press-fitting piece 72; due to the use of the sealing rubber 71 for sealing in the temperature control switch 3 of the prior art, the temperature control switch is large in volume and limited in installation position. In this application, the temperature control switch 3 is arranged on the outer side of the connection wire 23. Specifically, a terminal 24 for connecting to the third connection end 223 is arranged on one side of the connection wire 23. The temperature control switch 3 is fixed on the terminal 24. In practice, the position of the temperature control switch 3 can also be adjusted according to requirements; as Figure 8 shown, during actual fixing, the body of the temperature control switch 3 is adhered to the required position of the terminal 24 with heat-conducting silica gel and adhered firmly. The amount of heat-conducting silica gel is determined according to the actual situation. Ensure that the temperature control switch 3 is fixed firmly with heat-conducting silica gel first, and then a heat-shrinkable tube 8 containing glue is sleeved on the body of the temperature control switch 3. The body of the temperature control switch 3 is completely fixed and sealed through heat-sealing; this installation method is simple and is no longer limited by the size of the assembly position and can be flexibly adjusted according to requirements; in addition, since the heat-shrinkable tube 8 seals the body of the temperature control switch 3 at the same time, the temperature control switch 3 can have functions of waterproof, dustproof and anti-mud; and the product and process costs are reduced; the temperature control switch 3 is used to detect the temperature of the starter. When a set high temperature is detected, the relay disconnects and the starter stops working to prevent the starter from failing when working continuously at high temperature.

[0042] The temperature control switch 3 is connected in series in the loop of the relay, as Figure 3 and Figure 4As shown, the temperature control switch 3 has a first wire 33 and a second wire 32. The first wire 33 is connected to the first terminal 15 of the relay, and the second wire 32 is connected to the third terminal 17 of the relay. The ends of the first wire 33 and the second wire 32 are provided with connection tabs, and through holes are formed in the connection tabs so as to be sleeved on the outer circles of the first terminal 15 and the third terminal 17. In this application, the first wire 33 is connected to the first terminal 15 through a gasket and a nut, and the second wire 32 is connected to the third terminal 17. When the socket 12 is powered on, the current enters the relay coil through the first pin 121 and the second terminal 16, then flows from the relay coil to the third terminal 17, passes through the second wire 32 to the temperature control switch 3, and then passes through the first wire 33 to the first terminal 15, and finally returns to the second pin 122 to form a closed current loop. During normal operation, the temperature control switch 3 is in a normally closed state, so a complete loop can be formed. When the temperature control switch 3 detects high temperature, the relay disconnects and the starter stops working. The structure of the relay in this application enables the temperature control switch 3 to be directly connected in series in the circuit without the need to connect through an adapter, thus reducing the use of components and the number of interfaces, achieving cost reduction and simple connection.

[0043] As Figure 2 and Figure 5 shown, a fourth terminal 18 and a fifth terminal 19 are further provided on the relay. The first connection end 221 of the switch assembly 22 is connected to the fourth terminal 18 of the relay through a wire. The first connection end 221 is the terminal on the starter connected to the positive pole of the battery, providing power for the starter. The second connection end 222 of the switch assembly 22 is connected to the fifth terminal 19 of the relay through a wire. The second connection end 222 is connected to the switch coil of the starter. When the relay is powered on and working, the relay controls the switch coil of the starter to be energized. After the switch coil of the starter is energized, the starter motor can work.

[0044] During actual operation, as Figures 1 to 6 shown, the socket 12 of the relay is powered on, and the current enters the second terminal 16 through the first pin 121 (i.e., Figure 6 the 50 terminal in Figure 6The 85-terminal) is connected, thus forming a loop circuit to turn on the relay. After the relay is turned on, the switch coil of the starter is energized. After the switch coil is energized, the 30-terminal and 45-terminal of the starter are connected. The 30-terminal of the starter is connected to the positive electrode of the battery, and the 31-terminal of the starter is connected to the negative electrode of the battery. The current enters the negative electrode of the battery through the 30-terminal - 45-terminal - 31-terminal, and the starter motor works. When the relay is de-energized, the relay resets, the switch resets, and the starter motor stops working. Since the temperature control switch 3 is connected in series between the coils of the relay, under normal circumstances, the temperature control switch 3 is normally closed, and the relay can be normally powered on and work. When the temperature control switch 3 detects that the starter is overheated, it responds, and the current loop is disconnected at the temperature control switch 3. The current cannot return to the relay through the temperature control switch 3, and the relay cannot or no longer works. Therefore, the starter stops working, preventing the starter from continuing to work and causing overheating, which can protect the starter. Compared with the prior art, the present application integrates the control of the temperature control switch into the relay, reducing the adapter for connecting the relay and the temperature control switch. At the same time, it reduces the space occupied by the adapter and the connecting components, achieving cost reduction, and the connection is simple, reducing the risk of vibration failure and misconnection in multiple connection methods.

[0045] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "setting", "connection", "fixation", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0046] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality" means two or more, unless otherwise clearly specifically defined.

[0047] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "below" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0048] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0049] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this application.

Claims

1. A relay, characterized in that, Comprising: An upper housing (11), the upper housing (11) extending outward to form a socket (12) having a receiving cavity, and a first pin (121) and a second pin (122) being provided inside the socket (12); A boss (13), the boss (13) being provided on the outer side of the upper housing (11) and adjacent to the socket (12), a first terminal (15) being provided inside the boss (13), and the first terminal (15) being connected to the second pin (122) through a first connecting piece (41); A second terminal (16), the second terminal (16) extending upward from the upper end of the upper housing (11) and being connected to the first pin (121) through a second connecting piece (42); and A third terminal (17), the third terminal (17) extending upward from the upper end of the upper housing (11) and being connected to the second terminal (16).

2. The relay according to claim 1, wherein, The relay further includes a lower housing (14), the lower housing (14) being a cylindrical structure having an inner cavity, a coil being provided inside the lower housing (14), one end of the coil being connected to the second terminal (16), and the other end of the coil being connected to the third terminal (17).

3. The relay according to claim 2, characterized in that, A protective cap (161) is provided at the upper end of the relay, the protective cap (161) having a cavity, and the protective cap (161) being sleeved on the outer periphery of the second terminal (16) to wrap the second terminal (16).

4. The relay according to claim 3, characterized in that, The relay is further provided with a fourth terminal (18) and a fifth terminal (19), and a partition is further provided to separate the fourth terminal (18), the fifth terminal (19), the second terminal (16), and the third terminal (17) by the partition.

5. A starter, characterized in that, Comprising: A starter main body (21); A switch assembly (22), the switch assembly (22) being connected to the starter main body (21); The relay according to any one of claims 1 to 4 above, the relay being fixedly connected to the starter main body (21) and electrically connected to the switch assembly (22); A temperature control switch (3), the temperature control switch (3) being connected to the starter main body (21) and connected to the relay.

6. The starter according to claim 5, characterized in that, The starter main body (21) includes a connecting wire (23), one end of the connecting wire (23) being provided with a terminal (24), and the terminal (24) being connected to the temperature control switch (3).

7. The starter according to claim 6, characterized in that, The temperature control switch (3) is fixedly connected to the terminal (24) through a heat shrinkable tube (8).

8. The starter according to claim 7, characterized in that, The temperature control switch (3) has a first wire (33) and a second wire (32), the first wire (33) being connected to the first terminal (15), and the second wire (32) being connected to the third terminal (17).

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