JP6000720B2 - Connector for electrical connection - Google Patents

Description

  The present invention relates to an electrical connection connector, and more particularly to an electrical connection connector in which foreign matter such as metal powder does not enter even when immersed in oil.

  In a closed space filled with oil, such as the inside of a transmission for automobiles, it may be necessary to arrange a connector for electrical connection while being immersed in the oil.

  For example, in a transmission for an automobile, mechanical parts such as gears and metal belts are driven during traveling, and the occurrence of foreign matter (contamination) such as metal powder is unavoidable due to sliding of these metal parts. Since these foreign objects float on the flow of oil filled in the transmission and drift in the transmission, if a connector for electrical connection is installed in the transmission, foreign objects such as metal powder will be contained in the connector together with the oil. May cause undesired situations such as short circuiting of electrical connections. In particular, in recent automobiles, the transmission is electrically controlled. Therefore, a short circuit in the electrical connection causes serious problems such as malfunction of the transmission, and seriously affects the safe driving of the automobile. Needless to say, it will give.

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In order to prevent a situation such as a short circuit of electrical connection due to the intrusion of foreign matter such as metal powder into the connector, it is effective to increase the processing accuracy of the connector joint and eliminate the gap in the joint. the tolerance constraints, since by eliminating the joined portion of the gap completely is technically impossible, such as by sealing the joint portion of the connector with silicone rubber or the like is performed. However, in order to do this, silicon rubber parts procurement costs and assembly costs are separately required, so a significant increase in costs is inevitable, and the cost of parts decreases further with the spread of environmentally friendly compact cars. This was incompatible with the strong demands of automakers seeking to meet the demands of connectors.

  The present inventor conducted research to solve the above-described conventional problems related to connectors for electrical connection used in a closed space filled with oil such as a transmission. The present invention succeeds in developing a new connector that can be easily manufactured and assembled, and that can effectively prevent the intrusion of foreign substances such as metal powder, and is proposed here as the present invention.

The insulating and synthetic resin having flexibility as a material, and a female insulator having an inserted part, and the material of the synthetic resin having an insulating property and flexibility, and male insulator having an insertion portion where the is inserted into the receptacle In the connector for electrical connection, the inserted portion of the female insulator is constituted by an enlarged diameter portion near the opening portion and a reduced diameter portion located in the back thereof, and the inner diameter of the enlarged diameter portion is the same as that of the insertion portion of the male insulator. It is larger than the outer diameter and the inner diameter of the reduced diameter portion is set smaller than the outer diameter of the insertion portion of the male insulator, and opens to the rear end face of the female insulator in the wall thickness of the peripheral portion of the reduced diameter portion. the peripheral wall surface and circle center circle, reaches the enlarged diameter portion near imparting cavity cross section exhibited a slit shape, and formed to surround the reduced diameter portion, the elastic in the circumferential direction in reduced diameter section By Rukoto, the above-mentioned problems are eliminated.

Insert the insertion part of the male insulator into the insertion part of the female insulator, and connect the contact pins attached to the female insulator and the male insulator, respectively, to connect the electrical connection between the cable and the circuit board, the module and the circuit board, etc. Although the inner diameter of the reduced diameter portion formed in the insertion portion of the female insulator is smaller than the outer diameter of the insertion portion of the male insulator, it is provided in the circumferential direction by the cavity formed around it. Since the elasticity is given toward the insertion part, the insertion part that has reached the reduced diameter part of the inserted part during insertion of the insertion part enters the depth of the inserted part while elastically expanding the reduced diameter part, since close contact with the surface but elastically in perfect over a wide range from the outer periphery and the reduced diameter portion of the peripheral wall of the insertion portion, and a male insulator and female insulator Even if installed in a transmission filled with oil in a combined state, the oil does not enter the connector from the joint between the inserted portion and the inserted portion, and flows in the oil. It is possible to prevent an undesirable situation such as a short circuit of the electric circuit from occurring in the connector due to foreign matter (contamination) such as metal powder.
Accordingly, since it is not necessary to seal the joint portion between the inserted portion and the insertion portion with silicon rubber or the like, there is no need to procure parts for silicon rubber used for sealing and assembly costs therefor. Contamination) Has the effect of being able to take measures against intrusion and has excellent practicality.

BRIEF DESCRIPTION OF THE DRAWINGS The longitudinal cross-sectional view which isolate | separated and drawn the structural member of Example 1 of the connector for electrical connection based on this invention. Similarly, the longitudinal cross-sectional view of the state which couple | bonded the structural member.

In a connector composed of a male insulator and a female insulator, a reduced diameter portion is formed in a recessed insertion portion formed in the female insulator, and a cavity is provided within the wall thickness of the peripheral wall of the reduced diameter portion. The greatest point is that the part is given elasticity in the circumferential direction, and it is the escape of bending that occurs when the insertion part of the male insulator is inserted , and the joint part of both is elastically adhered over a wide area . Features exist.

  FIG. 1 is a longitudinal sectional view illustrating components of the first embodiment of the connector for electrical connection according to the present invention separated from each other, and FIG. 2 is a longitudinal sectional view of the components similarly joined together.

  A connector for electrical connection according to the present invention includes a male insulator 1 and a female insulator 2 as shown in FIG. The male insulator 1 is made of a synthetic resin having insulating properties and flexibility, and the disc-shaped collar portion 3 is integrally formed on the outer edge of the end surface near the rear side (left side in FIG. 1) of the cylindrical insertion portion 8. A contact pin 5a is attached from the inner diameter side rear portion (left side in FIG. 1) toward the front side (right side in FIG. 1). The collar portion 3 is not an essential member and may be omitted.

On the other hand, the female insulator 2 is a member made of a synthetic resin having insulating properties and flexibility, like the male insulator 1, and from the front side (left side in FIG. 1) to the rear side (right side in FIG. 1). A recessed insertion portion 7 for inserting the insertion portion 8 of the male insulator 1 is formed toward the surface, and a contact pin 5b is an opening of the insertion portion 7 from the bottom surface 9 of the insertion portion 7. It is planted toward 10 directions. In this embodiment, the male insulator 1 and the female insulator 2 are both cylindrical, but may be rectangular or other shapes. The contact pin 5 includes a male contact pin 5b having a protruding convex contact, and a female contact pin 5a having a concave contact for receiving insertion of the convex contact. In this embodiment, the male insulator 1 is provided with a female contact pin 5a and the female insulator 2 is provided with a male contact pin 5b. On the contrary, the male insulator 1 has a male type contact pin 5b. The contact pin 5 b may be attached to the female insulator 2 and the female contact pin 5 a may be attached.
Further, the male insulator 1 and the female insulator 2 are not necessarily limited to those having the shape shown in FIG. It only has to be.

  The portion of the female insulator 2 near the opening 10 of the inserted portion 7 is a cylindrical enlarged portion formed so that its inner diameter A is slightly larger than the outer diameter B of the insertion portion 8 of the male insulator 1. 14 and the portion closer to the bottom surface 9 is a cylindrical reduced diameter portion 13 formed so that its inner diameter C is smaller than the outer diameter B of the insertion portion 8 of the male insulator 1. In addition, a slope 12 is formed at a boundary portion between the enlarged diameter portion 14 and the reduced diameter portion 13.

Furthermore, a cylindrical cavity 16 that reaches the vicinity of the enlarged diameter portion 14 is formed concentrically with the inner peripheral wall surface of the reduced diameter portion 13 in the thickness of the peripheral wall 15 surrounding the reduced diameter portion 13 . The cavity 16 gives elasticity to the reduced diameter portion 13 in the circumferential direction. The rear end (right side in FIG. 1) of the cavity 16 is open to the rear end surface 18 of the female insulator 2, and the cavity 16 has a slit-like cross section and communicates with the outside. Further, the inner diameter side of the opening end of the inserted portion 7 is chamfered obliquely toward the inner side, and serves as an inclined portion 17 that facilitates the insertion when the inserting portion 8 is inserted.

The present invention has the configuration as described above, and the insertion portion 8 of the male insulator 1 is inserted into the inserted portion 7 of the female insulator 2, and the contact pins 5 a attached to the female insulator 2 and the male insulator 1, respectively. , 5b are used for electrical connection between the cable and the circuit board, the module and the circuit board, etc., but the inner diameter of the reduced diameter portion 13 formed in the inserted portion 7 of the female insulator 2 Although C is smaller than the outer diameter B of the insertion portion 8 of the male insulator 1, elasticity is given in the circumferential direction by the cavity 16 formed around the insertion portion 8. inserting portion 8 has reached the reduced diameter portion 13 of the insertion portion 7 enters the reduced diameter portion 13 to the back of the insertion portion 7 while expanding elastically press the outer diameter B and reduced diameter portion of the insertion portion 8 Surface to be in close contact snugly over a wide range from the third wall. Accordingly, even if the male insulator 1 and the female insulator 2 are connected to each other and installed in a transmission filled with oil, the oil is introduced into the connector from the joint portion between the insertion portion 7 and the insertion portion 8. It does not intrude, and it is possible to prevent an undesirable situation such as a short circuit of an electric circuit in the connector due to foreign matter (contamination) such as metal powder flowing in oil.

  Accordingly, since it is not necessary to seal the joint portion between the inserted portion 7 and the insertion portion 8 with silicon rubber or the like, there is no need to procure parts for silicon rubber used for sealing and assembly costs therefor, and the cost is low. Contamination measures can be taken and it has excellent practicality.

  It can be widely used not only for connectors installed in automobile transmissions but also for various connectors that require countermeasures against foreign matters (contamination).

1. Male insulator Female insulator 2. Collar part 5. Contact pin 7. Inserted part 8. Insertion section 9. Bottom surface 10. Opening 12. Slope 13. Reduced diameter portion 14. Expanded portion 15. Perimeter wall 16. Cavity 17. Inclined portion 18. Rear end face

Claims (4)

The insulating and synthetic resin having flexibility as a material, and a female insulator having an inserted part, and the material of the synthetic resin having an insulating property and flexibility, and male insulator having an insertion portion where the is inserted into the receptacle In the connector for electrical connection, the inserted portion of the female insulator is constituted by an enlarged diameter portion near the opening portion and a reduced diameter portion located in the back thereof, and the inner diameter of the enlarged diameter portion is the same as that of the insertion portion of the male insulator. It is larger than the outer diameter and the inner diameter of the reduced diameter portion is set smaller than the outer diameter of the insertion portion of the male insulator, and opens to the rear end face of the female insulator in the wall thickness of the peripheral portion of the reduced diameter portion. the peripheral wall surface and circle center circle, reaches the enlarged diameter portion near imparting cavity cross section exhibited a slit shape, and formed to surround the reduced diameter portion, the elastic in the circumferential direction in reduced diameter section Connector for electrical connection, characterized in that the escape of deflection occurs upon insertion of the male insulator. 2. The connector for electrical connection according to claim 1, wherein both the inserted portion and the inserted portion are cylindrical. The female insulator male type contact pin, connector for electrical connection according to claim 1, wherein the female type contact pins are attached respectively to the male insulator. 2. The connector for electrical connection according to claim 1, wherein a female-type contact pin is attached to the female insulator, and a male-type contact pin is attached to the male insulator.

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