JPH0673873U - Metal terminal - Google Patents

Abstract

(57) [Abstract] [Purpose] A metal terminal having a structure capable of firmly holding the inserted pin terminal without increasing the cost and also improving the reliability of the electrical connection with the pin terminal. I will provide a. [Structure] By machining a metal plate, the main surface 1
First and second bent portions 14 and 15 are provided at both ends of the tip 3, and the tip portion 1 is connected to the first and second bent portions 14 and 15.
6, 17 are provided, and the main surface portion 13 and the first and second bent portions 1 are provided.
4, 15 and the first and second bent portions 14, 15 which are metal terminals 11 which constitute a pin terminal insertion portion 18 surrounded by the first and second tip portions 16, 17. The metal terminal 11 is characterized in that the reinforcing portions 14a to 15b are formed by processing the metal plate so as to be extruded inward.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a terminal formed by processing a metal plate, and in particular, a structure of a terminal into which a pin terminal is inserted and which is mechanically gripped and which is electrically connected to the pin terminal. Regarding the improvement of.

[0002]

[Prior art]

 Conventionally, a positive temperature coefficient thermistor device has been used to start the compressor motor. This positive temperature coefficient thermistor device is attached to the cluster pin of the compressor by a plug-in method. That is, the above-mentioned positive temperature coefficient thermistor device is provided with a terminal into which the cluster pin is inserted, which mechanically grips the cluster pin and which secures an electrical connection with the cluster pin.

As described above, the metal terminal 1 shown in FIG. 2 is conventionally known as a terminal into which the pin terminal is inserted. The metal terminal 1 is formed by machining a metal plate and has a connecting portion 2. The connecting portion 2 is mechanically fixed to other portions of the component such as the positive temperature coefficient thermistor device and a circuit board in a portion not shown, and also serves to electrically connect with other portions of the component and a circuit. It is a part.

In the metal terminal 1, a main surface portion 3 having a width wider than that of the connection portion 2 is connected on the tip side of the connection portion 2, and both ends of the main surface portion 3 are formed by bending a metal plate. The formed first and second bent portions 4 and 5 are formed. First and second tip portions 6 and 7 are respectively arranged on the tip ends of the bent portions 4 and 5 such that the tips 6a and 7a thereof are close to each other.

In the metal terminal 1, the space surrounded by the main surface portion 3, the first and second bent portions 4, 5 and the first and second tip portions 6, 7 described above forms the pin terminal insertion portion 8. I am configuring. The size of the pin terminal insertion portion 8 is slightly smaller than the outer diameter of the pin terminal 9 shown in the lower part of FIG.

At the time of attachment, the metal terminal 1 is brought into close contact with the pin terminal 9 in the direction of the arrow shown in the figure, and the pin terminal 9 is inserted into the pin terminal insertion portion 8. As shown in FIG. 9 is gripped by the metal terminal 1, and the pin terminal 9 and the metal terminal 1 are electrically connected. In this case, since the size of the pin terminal insertion portion 8 is slightly smaller than the outer diameter of the pin terminal 9, the pin terminal 9 should be inserted while pushing the tip portions 6 and 7 of the metal terminal 1 apart. become. Therefore, in the state shown in FIG. 3, the tip portions 6 and 7 try to return to the main surface portion 8 side due to the springiness of the bent portions 4 and 5, so that the pin terminal 9 has the main surface portion 3 and the tip portions 6 and 7. It is securely gripped between.

However, like the other electrical connection parts, in the metal terminal 1 as well, in order to improve the reliability of the electrical connection, it is required to grip the pin terminal 9 more firmly.

In order to increase the gripping force of the pin terminal 9 in the metal terminal 1, the metal terminal 1 is made of a hard material and the force with which the tip portions 6 and 7 try to return to the main surface portion 8 side is increased. By increasing the thickness of the metal plate 1 to increase the force of the tips 6 and 7 to return to the main surface 8 side, the corrugated shape of the portion of the terminal 1 in contact with the outer peripheral surface of the pin terminal 9 By making the pin terminal 9 less likely to slip in the insertion direction in the terminal insertion portion 8 and by reducing the bending diameter of the bent portions 4 and 5, the main surface portion 8 of the tip portions 6 and 7 can be reduced. It is considered to increase the force to return to the side.

[0009]

[Problems to be solved by the device]

 However, in the methods (1) and (2), since the material of the metal plate forming the metal terminal 1 is changed or the thickness is increased, the cost of the metal terminal 1 is high.

In addition, the method (1) has a problem that the contact area between the metal terminal (1) and the pin terminal (9) becomes small, so that the reliability of electrical connection is impaired. Further, the method (3) has a problem that cracks are likely to occur in the bent portions 4 and 5 when the bending diameters of the bent portions 4 and 5 are reduced.

Therefore, the object of the present invention is that the pin terminal can be firmly gripped without increasing the cost, and the reliability of the electrical connection is excellent, and further cracks occur at the bent portion. It is to provide a metal terminal having a difficult structure.

[0012]

[Means for Solving the Problems]

 The present invention relates to an improvement of a metal terminal for inserting a pin terminal, mechanically gripping the pin terminal, and electrically connecting with the pin terminal. MEANS TO SOLVE THE PROBLEM The metal terminal of this invention is comprised by machining a metal plate, The main surface part, the 1st, 2nd bending part formed by bending at both ends of the said main surface part, and the said 1st A first and a second tip portion that are connected to the tip side of the first and second bent portions and are arranged so that their tips are close to each other, the main surface portion, the first and second A space surrounded by the bent portion and the first and second tip portions serves as a pin terminal insertion portion.

A feature of the present invention is that at least one reinforcing portion is formed in a part of the bent portion by processing so as to partially push the metal plate toward the inside. .

[0014]

[Action and effect of the device]

 In the terminal of the present invention, since at least one of the above-mentioned reinforcing portions is formed in the bent portion, the mechanical strength of the bent portion is enhanced. Moreover, since the reinforcing portion is formed by processing so that a part of the metal plate is pushed out inward at the bent portion, the bending diameter of the bent portion is partially reduced. is doing. Therefore, after the tip portion is moved away from the main surface portion by inserting the pin terminal, the force to return to the main surface portion side is increased by the presence of the reinforcing portion. Therefore, the pin terminal is firmly gripped in the state of being inserted in the terminal insertion portion.

In addition, in the terminal of the present invention, when the pin terminal is inserted, the contact area with the outer peripheral surface of the pin terminal does not require a special shape such as a corrugation, so that the contact area with the pin terminal is small. Secured enough. Therefore, the reliability of electrical connection is also ensured.

Moreover, since the reinforcing portion is configured so as to process only a part of the metal plate forming the terminal so as to be pushed inward, the cost of the terminal may be increased. Nor.

Further, although the bending diameter of the bent portion is reduced in the reinforcing portion, the bending diameter is reduced only in the portion where the reinforcing portion is configured, and in the other portion of the bending portion. Since the bend diameter can be set to a large value, it is difficult for cracks to occur in other parts of the bent part. Furthermore, since the reinforcing portion is processed so as to be extruded inward, the mechanical strength of that portion is increased. Therefore, even though the bending diameter is small, cracks are unlikely to occur in the reinforcing portion.

Therefore, according to the present invention, the pin terminal can be securely gripped without using an expensive high-strength metal material or increasing the thickness of the metal plate, and the electrical connection can be improved. It is possible to provide a metal terminal having excellent reliability.

[0019]

[Explanation of Examples]

 Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1A and 1B are a perspective view and a plan view showing a metal terminal according to an embodiment of the present invention. The metal terminal 11 is formed by machining a metal plate. This metal plate 11 has an elongated plate-shaped connection portion 12 for fixing the metal terminal 11 to an electronic device to which the metal terminal 11 is attached, and for electrically connecting the metal terminal 11 to a circuit in the electronic device. It is provided to make a physical connection.

A main surface portion 13 having a width wider than that of the connecting portion 12 is connected to the tip of the connecting portion 12. First and second bent portions 14 and 15 are formed at both ends of the main surface portion 13, and the first and second tip portions 16 and 17 extend so as to be continuous with the bent portions 14 and 15. It has been overtaken. The tip portions 16 and 17 are arranged so that the tip portions 16a and 17a thereof are close to each other. A portion surrounded by the main surface portion 13, the first and second bent portions 14 and 15, and the first and second tip portions 16 and 17 constitutes a pin terminal insertion portion 18.

The metal terminal 11 of the present embodiment is characterized in that the bent portions 14 and 15 have reinforcing portions formed at intermediate height positions so as to project inward by pressing a metal plate. 14a, 14b, 15a, 15b are formed. The shape of the portion in which the reinforcing portions 14a, 14b, 15a, 15b are formed is shown in a cross-sectional view in FIG. 4 with the reinforcing portions 15a, 15b as a representative.

The reinforcing portions 14a to 15b are formed so as to extend laterally in the bent portions 14 and 15 in the state shown in FIG. However, the reinforcing portions 14a to 15b need to be formed at positions where the reinforcing portions 14a to 15b do not come into contact with the pin terminals when the pin terminals are inserted into the pin terminal inserting portions 18. Otherwise, the contact portion between the pin terminal and the metal terminal 11 becomes small and the pin terminal cannot be firmly gripped.

In the metal terminal 11, a pin terminal slightly larger than the inner diameter of the pin terminal insertion portion 18 is inserted. FIG. 5 shows a state in which the pin terminals are inserted. As is apparent from FIG. 5, the pin terminal 20 is inserted into the pin terminal insertion portion 18, but at the time of this insertion, the outer diameter of the pin terminal 20 is smaller than the inner diameter of the pin terminal insertion portion 18. Since it is also slightly larger, the pin terminals 20 are inserted by pushing the tip portions 16 and 17 apart. Therefore, in the state shown in FIG. 5, the pin terminal 20 is firmly held by the metal terminal 11 by the force of the first and second tip portions 16 and 17 attempting to return to the main surface portion 13 side.

Moreover, since the reinforcing portions 14a to 15b are formed on the bent portions 14 and 15, the bending diameter of the bent portions 14 and 15 where the reinforcing portions 14a to 15b are formed is reduced. Therefore, the force with which the above-mentioned tip portions 16 and 17 try to return to the main surface portion 13 side is larger than that in the case where the reinforcing portions 14a to 15b are not formed.

Therefore, compared with the conventional metal terminal 1 shown in FIG. 2, since the reinforcing portions 14a to 15b are formed, the pin terminal can be gripped more firmly. Further, since the reinforcing portions 14a to 15b are formed only at the positions where they do not contact the outer peripheral surface of the pin terminal, that is, only at the first and second bent portions 14 and 15, the pin terminal 20 is inserted. In this state, the contact area between the metal terminal 11 and the pin terminal 20 is sufficiently secured. Therefore, the pin terminal 20 is hard to come off, and the reliability of the electrical connection is sufficient.

In the embodiment shown in FIG. 1, each of the bent portions 14 and 15 has two reinforcing portions formed at different height positions as the reinforcing portions. As described above, each of the bent portions 14 and 15 may be provided with only one relatively wide reinforcing portion 14c and 15c.

Furthermore, the reinforcing portion does not necessarily have to be positioned in the metal plate at the first and second bent portions 14 and 15, and as shown in FIG. Reinforcing portions 14d, 14e, 15d, 15e may be formed at both ends of the curved portions 14, 15 in the width direction.

[Brief description of drawings]

1A and 1B are a perspective view and a plan view of a metal terminal of an embodiment, respectively.

FIG. 2 is a partially cutaway perspective view showing a step of inserting a pin terminal into a conventional metal terminal.

FIG. 3 is a partially cutaway perspective view showing a state in which a pin terminal is inserted into a conventional metal terminal.

FIG. 4 is a cross-sectional view for explaining the shape of the reinforcing portion in the metal terminal of the embodiment.

FIG. 5 is a partially cutaway perspective view showing a state in which a pin terminal is inserted in the metal terminal of the embodiment.

FIG. 6 is a partial cutaway perspective view showing a modified example in which one bent portion is provided with one reinforcing portion.

FIG. 7 is a partially cutaway perspective view showing a modified example in which reinforcing portions are provided at both ends in the width direction of the bent metal plate.

[Explanation of symbols]

 11 ... Metal terminal 12 ... Connection part 13 ... Main surface part 14, 15 ... 1st, 2nd bending part 14a-15b ... Reinforcement part 16, 17 ... 1st, 2nd front-end | tip part

Claims (1)

[Scope of utility model registration request] 1. A metal terminal for inserting a pin terminal, holding the pin terminal, and achieving electrical connection with the pin terminal, the metal terminal being formed by bending a metal plate. The surface portion, the first and second bent portions formed by being bent at both ends of the main surface portion, and the leading and trailing ends of the first and second bent portions are connected to each other so that the tips of the two come close to each other. And a space surrounded by the main surface portion, the first and second bent portions, and the first and second tip portions is a pin terminal insertion portion. The metal terminal is characterized in that at least one reinforcing portion is formed by processing so that a metal plate is partially extruded inward at a part of the bent portion.