Coupler with external resistor

Abstract

The utility model discloses a coupler with an external resistor, which is characterized in that a base is provided with a cavity, and the cavity is opened towards one side; the conductive part is partially accommodated in the cavity, and the rest part of the conductive part penetrates through the bottom surface of the cavity and extends to the outside; the resistor is electrically connected with the part, extending to the outside, of the conductive part; the resistor is externally arranged, so that the resistor can be replaced, at the moment, only a matching body of the base and the conductive piece needs to be configured in stock, when a customer needs the resistor with any resistance value and any power, the resistor can be replaced according to actual requirements, and even the resistor does not need to be assembled in shipment. According to the structure, the inventory pressure can be greatly reduced, the production cost is reduced, and the product has a larger competitive advantage.

Description

Technical Field

[0001] The utility model relates to the field of electrical technology, in particular to a coupler with an external resistor. Background Art

[0002] In actual use, the coupler needs to be connected in series with a resistor to limit the current. In the prior art, the resistor is usually installed before leaving the factory. The specific structure is that the coupler includes a base, two pins and a resistor. The pins are electrically connected to the resistor first, and then the base, pins and resistor are connected and fixed through integral injection molding. In this structure, the resistor is embedded in the base, forming an effect of a built-in resistor.

[0003] The problem with this structure is that since the resistor is built-in, it cannot be removed from the base, that is, the resistance of the resistor is constant and cannot be replaced. Since the needs of different customers are different, couplers with resistors of different resistance values ​​are required. Couplers of different resistance values ​​will generate great inventory pressure, so how to make the resistors replaceable and thus reduce inventory pressure has become a technical problem that technicians in this field need to solve urgently. Utility Model Content

[0004] Therefore, the technical problem to be solved by the present invention is how to realize the replaceability of the resistor. To this end, a coupler with an external resistor comprises:

[0005] A base, wherein the base is provided with a cavity, and the cavity is open toward one side;

[0006] A conductive member, wherein a portion of the conductive member is accommodated in the cavity, and a remaining portion of the conductive member extends through the bottom surface of the cavity to the outside;

[0007] A resistor is electrically connected to the portion of the conductive member extending to the outside.

[0008] The resistor and the conductive member are connected by soldering, plug-in connection or terminal connection.

[0009] The side wall of the base is provided with a fixing groove, and the resistor is accommodated in the fixing groove.

[0010] The fixing groove is provided with a limiting portion, and the limiting portion limits the resistor.

[0011] The side wall of the base is provided with a protective wall, and the protective wall cooperates with the side wall of the base to form a protective cavity. The conductive member extends to the protective cavity, and the resistor includes a pin, and the pin extends to the protective cavity.

[0012] The side wall of the base is provided with a fixing plate, and the fixing plate cooperates with the side wall of the protective wall to form the fixing groove.

[0013] The protective wall is provided with a through slot, and the pin passes through the through slot and extends to the protective cavity.

[0014] The top surface of the protection wall is higher than the top surface of the portion of the protection cavity where the conductive member is accommodated.

[0015] The conductive element and the base are integrally injection molded.

[0016] The base is provided with a fixing ear, and the fixing ear is provided with a fixing hole.

[0017] The technical solution of the utility model has the following advantages:

[0018] 1. The utility model provides a coupler with an external resistor. By placing the resistor externally, the resistor can be replaced. At this time, the inventory only needs to be equipped with a base and a conductive part. When the customer needs a resistor of any resistance value and any power, it can be replaced according to actual needs, and even the resistor can be shipped without assembly. This structure can greatly reduce inventory pressure, reduce production costs, and make the product have a greater competitive advantage.

[0019] 2. The utility model provides a coupler with an external resistor, and the connection method between the resistor and the conductive member can be adjusted according to actual needs.

[0020] 3. The utility model provides a coupler with an external resistor, and the setting of the fixing groove forms a fixing effect of the resistor to prevent the resistor from falling off.

[0021] 4. The utility model provides a coupler with an external resistor, and the setting of the limiting part further improves the fixing strength of the resistor.

[0022] 5. The utility model provides a coupler for an external resistor, and the protective wall has three functions: first, to protect the fixed resistor to prevent the risk of deformation, falling off, etc. caused by external force impact; second, to protect the welding position to prevent the welding position from being impacted by external force; third, to make the product appearance more integrated and regular.

[0023] 6. The utility model provides a coupler for an external resistor, wherein the fixing plate cooperates with the protective wall, so that the resistor is fixed more firmly and stably.

[0024] 7. The utility model provides a coupler with an external resistor, and the through groove is easy to process and also has the effect of limiting and fixing the pins to prevent bending and falling.

[0025] 8. The utility model provides a coupler with an external resistor, and the height of the protective wall is limited, which further improves the protection level of the welding point, and the external force is not easy to impact the welding point.

[0026] 9. The utility model provides a coupler with an external resistor, wherein the conductive part and the base are integrally injection molded, making the processing more convenient.

[0027] 10. The utility model provides a coupler with an external resistor, and the setting of the fixing hole forms a fixing effect, making it more convenient to install and fix the base. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 A schematic diagram of the structure of a coupler with an external resistor provided by the utility model;

[0030] Figure 2 A schematic diagram of the structure of a coupler with an external resistor provided by the utility model;

[0031] Figure 3 The utility model provides a cross-sectional view of a coupler with an external resistor.

[0032] Description of reference numerals:

[0033] 11. Base; 12. Conductive member; 13. Resistor; 14. Fixing groove; 15. Protective wall; 16. Fixing plate; 17. Fixing ear; 111. Cavity; 131. Pin; 141. Limiting portion; 151. Protective cavity; 152. Through groove; 171. Fixing hole. DETAILED DESCRIPTION

[0034] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0038] Example 1

[0039] This embodiment provides a coupler with an external resistor, as shown in the attached Figure 1-3 As shown, including:

[0040] The base 11 is provided with a cavity 111, and the cavity 111 is open to one side. In this embodiment, the cavity 111 is described as opening to the right side. In addition, those skilled in the art can also adjust the opening direction of the cavity 111 according to actual needs.

[0041] Conductive member 12, part of the conductive member 12 is accommodated in the cavity 111, and the part of the conductive member 12 accommodated in the cavity 111 is used to cooperate with the outside. The rest of the conductive member 12 extends to the outside through the bottom surface of the cavity 111, and the rest of the conductive member 12 here specifically extends toward the left side, and extending to the outside means exceeding the left side wall of the base 11. In this embodiment, the conductive member 12 can be a pin or a socket, and those skilled in the art can adjust it according to actual needs. In addition, it should be noted that the number of conductive members 12 can be adjusted according to actual needs, and can be two, three, or more. In this embodiment, only two conductive members 12 are taken as an example for description.

[0042] Resistor 13, the resistor 13 is electrically connected to the portion of the conductive member 12 extending to the outside. Here, the resistor 13 is located on one side of the left side wall of the base 11, and the resistor 13 cooperates with the conductive member 12 to form an electrical connection. In this embodiment, the resistor 13 is connected to two conductive members 12, that is, one end of the resistor 13 is connected to one conductive member 12, and the other end of the resistor 13 is connected to another conductive member 12 to form a series circuit. Here, the resistor 13 is a plug-in resistor 13. By placing the resistor 13 externally, the resistor 13 can be replaced. At this time, the inventory only needs to be configured with the matching body of the base 11 and the conductive member 12. When the customer needs a resistor 13 of any resistance value and any power, it can be replaced according to actual needs, and even the resistor 13 can be shipped without being assembled. This structure can greatly reduce inventory pressure, reduce production costs, and make the product have a greater competitive advantage.

[0043] Specifically, the connection method between the resistor 13 and the conductive part 12 is soldering or plug-in connection or terminal connection. Solder welding here means that the connection between the resistor 13 and the conductive part 12 is formed by melting the solder wire. Plug-in connection is specifically a connection structure similar to that between a pin and a plug spring. Terminal connection means that an intermediate matching connection is formed by a bolt. The connection method between the resistor 13 and the conductive part 12 can be adjusted according to actual needs. In this embodiment, the connection method between the resistor 13 and the conductive part 12 is described by taking solder welding as an example. Since the melting point of the solder wire is low and welding and replacement are convenient, those skilled in the art can adjust the resistance value of the resistor 13 according to actual needs, and the operator only needs to have a certain level of welding.

[0044] Specifically, as attached Figure 2-3 As shown, the side wall of the base 11 is provided with a fixing groove 14, and the fixing groove 14 is specifically located on the left side wall of the base 11. The resistor 13 is accommodated in the fixing groove 14, which is equivalent to the resistor 13 being fixed in the fixing groove 14. The setting of the fixing groove 14 forms a fixing effect of the resistor 13 to prevent the resistor 13 from falling off.

[0045] Specifically, as attached Figure 2-3 As shown, the fixing groove 14 is provided with a limiting portion 141, where the limiting portion 141 is located on the open end of the fixing groove 14, and serves to limit the resistor 13 and prevent the resistor 13 from falling off from the fixing groove 14. In this embodiment, the limiting portion 141 is specifically located on the left side of the left side wall, and the limiting portion 141 is specifically in the shape of a hook, so that the opening size of the fixing groove 14 toward the left side is reduced, that is, a shrinking effect is formed, and the resistor 13 cannot easily fall out of the opening on the left side. The setting of the limiting portion 141 further improves the fixing strength of the resistor 13. It should also be noted here that the upper end and the lower end of the fixing groove 14 are also set as openings.

[0046] Specifically, as attached Figure 2-3As shown, the side wall of the base 11 is provided with a protective wall 15, which extends toward the left side and has a certain height. The protective wall 15 cooperates with the left side wall of the base 11 to form a protective cavity 151, and the conductive member 12 extends to the protective cavity 151, that is, the left end of the conductive member 12 extends to the protective cavity 151. The resistor 13 includes a pin, and the resistor 13 is a plug-in resistor 13, so it includes two pins 131, and the two pins 131 are symmetrically arranged, and the pins 131 extend to the protective cavity 151. The protective wall 15 has three functions: first, to protect the fixed resistor 13 from external impact, resulting in deformation, falling off and other risks; second, to protect the welding position to prevent the welding position from being impacted by external forces; third, to make the product appearance more integrated and regular. In this embodiment, the protective wall 15 is a rectangular ring structure.

[0047] Specifically, as attached Figure 2-3 As shown, a fixing plate 16 is provided on the left side wall of the base 11, and the fixing plate 16 cooperates with the side wall of the protective wall 15 to form a fixing groove 14. The fixing plate 16 cooperates with the protective wall 15 to make the resistor 13 more firmly and stably fixed. There are two limiting portions 141, one of which is located on the fixing plate 16, and the other limiting portion 141 is located on the side wall of the protective cavity 15 facing the fixing plate 16.

[0048] Specifically, as attached Figure 2-3 As shown, the protective wall 15 is provided with a through slot 152, and the pin 131 passes through the through slot 152 and extends to the protective cavity 151. The through slot 152 is easy to process and also plays a limiting and fixing effect on the pin 131 to prevent bending and falling.

[0049] Specifically, as attached Figure 2-3 As shown, the top surface of the protective wall 15 is higher than the top surface of the portion of the conductive member 12 accommodated in the protective cavity 151. The top surface of the protective wall 15 specifically refers to the leftmost surface of the protective wall 15. The left end of the conductive member 12 extends into the protective cavity 151, and the top surface of the conductive member 12 is the leftmost surface of the conductive member 12, that is, the conductive member 12 will not exceed the protection of the protective cavity 151. In simple terms, the height of the protective wall 15 is greater than the length of the conductive member 12 located in the protective cavity 151. The height limit of the protective wall 15 further improves the protection level of the welding point, and the external force is not easy to impact the welding point.

[0050] Specifically, the conductive member 12 and the base 11 are integrally injection molded. The conductive member 12 and the base 11 are integrally injection molded, which makes processing more convenient. Here, after the base 11 is integrally injection molded, structures such as the fixing groove 14, the protective cavity 151, and the cavity 111 are formed.

[0051] Specifically, as attached Figure 1-2As shown, the base 11 is provided with a fixing ear 17, and the fixing ear 17 is provided with a fixing hole 171. The setting of the fixing hole 171 forms a fixing effect, making it more convenient to install and fix the base 11. The number of the fixing ears 17 here can be adjusted according to actual needs, and can be one, two, or more.

[0052] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A coupler with an external resistor, characterized in that: include: A base (11), wherein the base (11) is provided with a cavity (111), and the cavity (111) is open toward one side; A conductive member (12), wherein a portion of the conductive member (12) is accommodated in the cavity (111), and the remaining portion of the conductive member (12) passes through the bottom surface of the cavity (111) and extends to the outside; A resistor (13) is electrically connected to the portion of the conductive member (12) extending to the outside.

2. The coupler with external resistor according to claim 1, characterized in that: The resistor (13) and the conductive element (12) are connected by soldering, plug-in connection or terminal connection.

3. The coupler with external resistor according to claim 1, characterized in that: A fixing groove (14) is provided on the side wall of the base (11), and the resistor (13) is accommodated in the fixing groove (14).

4. The coupler with external resistor according to claim 3, characterized in that: The fixing groove (14) is provided with a limiting portion (141), and the limiting portion (141) limits the resistor (13).

5. The coupler with external resistor according to claim 3 or 4, characterized in that: The side wall of the base (11) is provided with a protective wall (15), the protective wall (15) cooperates with the side wall of the base (11) to form a protective cavity (151), the conductive member (12) extends to the protective cavity (151), and the resistor (13) includes a pin (131), and the pin (131) extends to the protective cavity (151).

6. The coupler with external resistor according to claim 5, characterized in that: A fixing plate (16) is provided on the side wall of the base (11), and the fixing plate (16) cooperates with the side wall of the protective wall (15) to form the fixing groove (14).

7. The coupler with external resistor according to claim 5, characterized in that: The protective wall (15) is provided with a through slot (152), and the pin (131) passes through the through slot (152) and extends to the protective cavity (151).

8. The coupler with external resistor according to claim 5, characterized in that: The top surface of the protective wall (15) is higher than the top surface of the portion of the conductive member (12) accommodated in the protective cavity (151).

9. The coupler with external resistor according to claim 1, characterized in that: The conductive member (12) and the base (11) are integrally injection molded.

10. The coupler with external resistor according to claim 1, characterized in that: The base (11) is provided with a fixing ear (17), and the fixing ear (17) is provided with a fixing hole (171).

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