CN217361279U

CN217361279U - Vertical cement resistor

Info

Publication number: CN217361279U
Application number: CN202221077824.5U
Authority: CN
Inventors: 黎焕章; 郭幸世
Original assignee: Xingya Suzhou Electronic Industry Co ltd
Current assignee: Xingya Suzhou Electronic Industry Co ltd
Priority date: 2022-05-07
Filing date: 2022-05-07
Publication date: 2022-09-02
Anticipated expiration: 2032-05-07

Abstract

The utility model discloses a vertical cement resistor, including the casing with encapsulate in at least one wire winding resistance in the casing, wire winding resistance includes the resistance main part, the both ends of resistance main part are equipped with respectively presses the cap, it is connected with the pin to press the cap, the pin is connected with the conducting strip, the conducting strip set up in the outer one end of casing includes at least one connecting portion that are used for being connected with the circuit board, connecting portion have the perpendicular to the first size and the second size of the axis direction of resistance main part, first size is greater than or equal to the diameter of pin, the second size is greater than the diameter of pin. The scheme can improve the connection stability of the vertical cement resistor and the circuit board.

Description

Vertical cement resistor

Technical Field

The utility model relates to a resistor technical field, specificly a vertical cement resistor.

Background

Resistors are one of the more numerous components used in electronic circuits, and are often formed into different series according to power and resistance values for circuit designers to choose from. The resistor is mainly used for regulating and stabilizing current and voltage in the circuit, can be used as a current divider and a voltage divider, and can also be used as a circuit matching load. In some special cases, for example, limited by the installation space of the resistor on the circuit board, or the resistor needs to have a certain heat dissipation space with the circuit board, a vertical resistor can be usually disposed on the circuit board to reduce the contact area between the resistor and the circuit board, so as to meet the above special requirements.

In a conventional vertical resistor, a pin is mostly in the shape of an elongated round bar, and the resistor is welded with a circuit board through the pin. In some products (such as motors) which generate or are subjected to large vibration due to work, the contact area of the vertical resistor and the circuit board is small, the influence of the vibration is obvious, and the pin is softened due to the fact that the resistor generates large heat, so that the problems that the resistor falls off and the contact between the pin and the circuit board is unstable due to insufficient strength of the pin are easily caused.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defect among the prior art, the embodiment of the utility model provides a vertical cement resistor, its intensity and the stability of being connected with the circuit board are improved.

The embodiment of the application discloses: the utility model provides a vertical cement resistor, includes the casing and encapsulates in at least one wire winding resistance in the casing, wire winding resistance includes the resistance main part, the both ends of resistance main part are equipped with respectively presses the cap, it is connected with the pin to press the cap, the pin is connected with the conducting strip, the conducting strip set up in the outer one end of casing includes at least one connecting portion that are used for being connected with the circuit board, connecting portion have the perpendicular to the first size and the second size of the axis direction of resistance main part, first size is more than or equal to the diameter of pin, the second size is greater than the diameter of pin.

Specifically, the conductive sheet includes two of the connection portions, and the two connection portions are disposed at an interval.

Specifically, the casing is equipped with and is used for supplying the first recess that the conducting strip stretches out, the conducting strip be equipped with be used for with the second recess of first recess joint, the second recess is located connecting portion orientation one side of pin.

Specifically, the connecting portion is connected with the circuit board in an inserting manner, and the circuit board is provided with a through hole for the connecting portion to be inserted into.

Specifically, the connecting part is provided with a bent part which is used for contacting with a conductive disc positioned in the through hole when the connecting part is plugged into the through hole.

Specifically, the bend has a maximum bending radius that is greater than or equal to a length of the through-hole in a corresponding direction.

Specifically, one end of the housing facing the circuit board is provided with at least one abutting portion, and the abutting portion is used for abutting against the circuit board.

Specifically, the vertical cement resistor comprises two serially connected winding resistors, one ends of the two winding resistors are connected, and conducting strips at the other ends of the two winding resistors extend out of the shell respectively.

Specifically, the conducting strips are not arranged at the ends connected with the two winding resistors respectively, and the ends connected with the two winding resistors are connected through pins.

The utility model discloses following beneficial effect has at least:

1. the connecting part of the vertical cement resistor of the embodiment is connected with the circuit board through the conducting strip with larger thickness and width, so that the connecting strength and stability of the resistor and the circuit board are improved.

2. The vertical cement resistor of this embodiment, its structure is ingenious, both can improve the packaging efficiency of resistor self, can also improve the packaging efficiency of resistor and circuit board.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

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, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a vertical cement resistor connected to a circuit board according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of the interior of a vertical cement resistor in an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a conductive sheet according to an embodiment of the present invention at a first viewing angle;

fig. 4 is a schematic structural diagram of a conductive sheet according to an embodiment of the present invention at a second viewing angle;

fig. 5 is a schematic structural diagram of a housing in an embodiment of the present invention;

fig. 6 is a schematic structural diagram of the connection portion of the conductive sheet of the embodiment of the present invention inserted into the circuit board.

Reference numerals of the above figures: 1. a housing; 11. a first groove; 12. an abutting portion; 21. a resistor body; 22. pressing the cap; 23. a pin; 24. a conductive sheet; 241. a connecting portion; 2411. a bend; 242. a second groove; 3. a circuit board; 31. and a through hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 3, the vertical cement resistor of the present embodiment includes a housing 1 and at least one wire-wound resistor encapsulated in the housing 1 by a cement paste. Wire winding resistance includes resistance main part 21, and the both ends of resistance main part 21 are equipped with respectively presses cap 22, are connected with pin 23 on every pressure cap 22, and pin 23 is connected with conducting strip 24. The resistor body 21, the press cap 22, the pin 23 and at least part of the conducting strip 24 are all encapsulated in the shell 1, and part of the conducting strip 24 is arranged outside the shell 1. The end of the conductive sheet 24 disposed at the part outside the housing 1 includes at least one connecting portion 241 for connecting with the circuit board 3, the connecting portion 241 has a first dimension perpendicular to the axial direction (Z-axis direction) of the resistor main body 21 and a second dimension, the first dimension is greater than or equal to the diameter of the pin 23, and the second dimension is greater than the diameter of the pin 23. Specifically, the first dimension is a dimension of the connection portion 241 along the X-axis direction, which may be referred to as a thickness of the connection portion 241, and the second dimension is a dimension of the connection portion 241 along the Y-axis direction, which may be referred to as a width of the connection portion 241. In other words, the thickness of the connecting portion 241 is greater than or equal to the diameter of the pin 23, and the width of the connecting portion 241 is greater than the diameter of the pin 23, so that the strength of the portion of the vertical cement resistor for connecting with the circuit board 3 (i.e., the connecting portion 241) is improved, and the strength and stability of the connection of the vertical cement resistor with the circuit board 3 are also improved.

As shown in fig. 2, the vertical cement resistor of the present embodiment includes two winding resistors, one end of each winding resistor is connected in series, and the conducting strips 24 at the other end extend out of the housing 1. Preferably, the end of the two winding resistors connected to each other may not be provided with the conductive sheet 24, but directly connected through the pin 23, so that the material cost may be saved, and the process of welding the pin 23 of the end with the conductive sheet 24 may also be omitted.

Referring to fig. 1 and 3, the conductive sheet 24 disposed outside the housing 1 includes two connecting portions 241 at one end, and the two connecting portions 241 are spaced apart from each other. The way of increasing the connecting portion 241 of the resistor and the circuit board 3 can reduce the single connecting portion 241 bearing the acting force from the resistor itself, and on the other hand, has a safety function, specifically, the single conducting strip 24 is connected with the circuit board 3 through the two connecting portions 241, if one of the connecting portions 241 on one conducting strip 24 fails to be connected, the other connecting portion 241 can still have a conducting function, and the stability and reliability of the connection of the resistor and the circuit board 3 are further improved.

As shown in fig. 4 and fig. 5, the housing 1 of the present embodiment is provided with a first groove 11 for extending the conductive sheet 24, the conductive sheet 24 is provided with a second groove 242 for engaging with the first groove 11, and the second groove 242 is located on a side of the connecting portion 241 facing the pin 23. Adopt above-mentioned scheme, when assembling the resistor, only need the joint cooperation through second recess 242 and first recess 11, alright with wire resistor fast positioning on casing 1, be favorable to improving the packaging efficiency of resistor, simultaneously, can also ensure that the length of the part that conducting strip 24 of each resistor stretches out outside casing 1 is unanimous.

As shown in fig. 1 and fig. 6, the connection portion 241 of the conductive sheet 24 of the present embodiment can be connected to the circuit board 3 by plugging, the circuit board 3 is provided with a through hole 31 for inserting the connection portion 241, and after the connection portion 241 is plugged into the through hole 31, the connection portion 241 can be connected to the circuit board 3 by using insulating glue. Preferably, the connection portion 241 has a bend 2411, and the bend 2411 is used for contacting with the conductive disc disposed in the through hole 31 when the connection portion 241 is plugged into the through hole 31 of the circuit board 3. Further, the bend 2411 has a maximum bending radius larger than or equal to the length of the through hole 31 in the corresponding direction, so that the bend 2411 can be ensured to be in good contact with the conductive pad in the through hole 31, and on the other hand, the bend 2411 can further improve the strength of the connecting portion 241.

As shown in fig. 1 and 5, the housing 1 of the present embodiment is provided with at least one abutting portion 12 at one end facing the circuit board 3, and the abutting portion 12 is integrally formed with the housing 1 and is used for abutting against the circuit board 3. Preferably, the length of the abutting portion 12 has a certain relationship with the position of the bending portion 2411 on the connecting portion 241, and the relationship is such that, when the abutting portion 12 abuts against the circuit board 3, the bending portion 2411 on the connecting portion 241 is just located in the through hole 31 of the circuit board 3 and contacts with the conductive plate, so as to improve the efficiency and precision of connecting the resistor with the circuit board 3.

The principle and the implementation mode of the utility model are explained by applying the specific embodiment, and the explanation of the above embodiment is only used for helping to understand the method and the core idea of the utility model; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be changes in the specific embodiments and the application range, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims

1. The utility model provides a vertical cement resistor, its characterized in that, including the casing with encapsulate in at least one wire winding resistance in the casing, wire winding resistance includes the resistance main part, the both ends of resistance main part are equipped with respectively presses the cap, it is connected with the pin to press the cap, the pin is connected with the conducting strip, the conducting strip set up in the outer one end of casing includes at least one connecting portion that is used for being connected with the circuit board, connecting portion have the perpendicular to the first size and the second size of the axis direction of resistance main part, first size is greater than or equal to the diameter of pin, the second size is greater than the diameter of pin.

2. The vertical cement resistor as claimed in claim 1, wherein the conductive strips comprise two of the connecting portions, the two connecting portions being spaced apart.

3. The vertical cement resistor as claimed in claim 1, wherein the housing is provided with a first groove for the conductive sheet to extend out, the conductive sheet is provided with a second groove for being clamped with the first groove, and the second groove is located on one side of the connecting portion facing the pin.

4. The vertical cement resistor as claimed in claim 1, wherein the connecting part is connected with the circuit board in a plugging manner, and the circuit board is provided with a through hole for inserting the connecting part.

5. Vertical cement resistor according to claim 4, characterized in that said connection portion has a bend for contacting a conductive disc located in said through hole when said connection portion is plugged into said through hole.

6. The vertical cement resistor as claimed in claim 5, wherein said bend has a maximum bending radius greater than or equal to the length of said through hole in the corresponding direction.

7. The vertical cement resistor as claimed in claim 1, wherein one end of the housing facing the circuit board is provided with at least one abutment for abutment with the circuit board.

8. The vertical cement resistor as claimed in claim 1, wherein the vertical cement resistor comprises two serially connected wire-wound resistors, one end of each wire-wound resistor is connected, and the conducting strips at the other end of each wire-wound resistor extend out of the housing.

9. The vertical cement resistor according to claim 8, wherein the conductive strips are not arranged at the ends connected with the two winding resistors, and the ends connected with the two winding resistors are connected through pins.