JP5223767B2 - Electrical connector - Google Patents

Description

  The present invention relates to an electrical connector.

  For example, there is a connector in which a male connector and a female connector formed in accordance with the shape of the male connector are fitted and connected (for example, described in Patent Document 1).

Japanese Patent Application Laid-Open No. 2002-295761

  However, in the connector described in Patent Document 1, since the terminals and the terminals are connected while being rubbed when the male and female connectors are fitted together, the contacts of both the terminals are rubbed to cause plating peeling and the like. Life (number of mating) is shortened.

  As a means for avoiding this, it is conceivable to form a plating having high hardness on the terminal. However, when the means using high hardness plating is adopted, the cost is high and it is not mass-productive.

  Therefore, the present invention provides an electrical connector that suppresses plating peeling at a contact portion and enables a long life as a connector.

  In the electrical connector of the present invention, the connector housing is composed of an inner diameter varying portion that decreases the inner diameter from the front of the connector insertion direction toward the back, and a connector electrode holding portion that slidably accommodates and holds the second connector electrode. In addition, a second connector electrode that is fitted and electrically connected to the first connector electrode is provided on the electrode main body portion for inserting the first connector electrode therein, and on the front side of the electrode main body portion in the connector insertion direction. Terminal contact part.

  And in this electrical connector, as the first connector electrode is inserted into the electrode main body portion and pushed by the first connector electrode, the electrode main body portion is pushed into the connector insertion direction and moved. The terminal contact portion moves along the inner wall surface of the inner diameter varying portion formed in the connector housing and is displaced inward so as to be in close contact with the periphery of the first connector electrode.

  According to the electrical connector of the present invention, the terminal contact portion of the second connector electrode moves along the reduced inner wall surface of the inner diameter variation portion formed in the connector housing and is displaced inward to surround the first connector electrode. Unlike the connector structure in which both contact portions are rubbed and contacted from the start of fitting of both connector electrodes, both connector electrodes are brought into electrical contact without sliding contact. be able to. Therefore, according to the present invention, it is possible to suppress the peeling of the plating at the terminal contact portion, and it is possible to realize a longer life of the connector (an increase in the number of fittings).

FIG. 1 is a cross-sectional view showing the electrical connector of the first embodiment. FIG. 2 is an enlarged cross-sectional view of a main part of the electrical connector of FIG. FIG. 3 shows a connector electrode fitting process of the electrical connector of Embodiment 1, and shows a state before the first connector electrode is inserted into the connector housing. FIG. 4 shows a connector electrode fitting process of the electrical connector of Embodiment 1, and shows a state in which the first connector electrode has started to be inserted into the connector housing. FIG. 5 shows a connector electrode fitting step of the electrical connector of Embodiment 1, and shows a state where the tip end portion of the first connector electrode is inserted into the electrode main body portion of the second connector electrode. FIG. 6 shows a connector electrode fitting process of the electrical connector according to the first embodiment, and shows a state where the tip of the first connector electrode has reached the bottom of the second connector electrode. FIG. 7 shows the connector electrode fitting process of the electrical connector of Embodiment 1, in which the electrode main body is pushed by the first connector electrode and the terminal contact portion of the second connector electrode is in close contact with the first connector electrode. FIG. FIG. 8 is a cross-sectional view showing the electrical connector of Embodiment 2 in which an external electrode having an elastic portion that contacts the bottom of the second connector electrode is disposed below the connector housing. FIG. 9 is a cross-sectional view showing the electrical connector of the third embodiment in which an external electrode having an elastic portion in contact with the bottom of the second connector electrode is disposed below the connector housing. FIG. 10 shows the electrical connector according to the fourth embodiment, and shows an example in which the terminal contact portion is point contact or line contact with the first connector electrode.

  Hereinafter, specific embodiments to which the present invention is applied will be described in detail with reference to the drawings.

“Embodiment 1”
First, the structure of the electrical connector of Embodiment 1 is demonstrated with reference to FIG.1 and FIG.2. FIG. 1 is a cross-sectional view showing the electrical connector of Embodiment 1, and FIG. 2 is an enlarged cross-sectional view of the main part of the electrical connector of FIG.

  As shown in FIG. 1, the electrical connector of the first embodiment is configured such that the first connector electrode 1 is fitted to the second connector electrode 3 provided in the connector housing 2 to electrically connect the connector electrodes 1 and 3 to each other. To do.

  The first connector electrode 1 is formed as an electrode having a round bar shape, for example. A tapered surface 4 for facilitating insertion into the second connector electrode 3 to be described later is formed on the outer periphery of the distal end portion 1A of the first connector electrode 1.

  The connector housing 2 is connected to the connector electrode guide portion 2A constituting the inlet of the first connector electrode 1, the inner diameter varying portion 2B that decreases the inner diameter from the front of the connector insertion direction toward the back, and the inner diameter varying portion 2B. And a connector electrode holding portion 2C that slidably accommodates and holds the second connector electrode 3.

  The connector electrode guide portion 2A is formed as a cylindrical body having an inner diameter that is larger than the diameter (outer diameter) of the first connector electrode 1. A guide member 5 for guiding the insertion of the first connector electrode 1 is attached to the inside of the connector electrode guide portion 2A.

  The guide member 5 is attached to the inner side of the connector electrode guide portion 2A by screwing a male screw 7 formed on the outer peripheral surface of the female screw 6 formed on the inner surface of the connector electrode guide portion 2A. Inside the guide member 5, a guide inclined surface 5a and a guide surface 5b for guiding the first connector electrode 1 are formed.

  The inclined guide surface 5a is formed as a surface forming a so-called mortar that is formed so as to gradually narrow its inner diameter from the inlet that receives the first connector electrode 1 to the back. The guide surface 5 b is an inner wall surface forming a circular hole having an inner diameter slightly larger than the outer diameter of the first connector electrode 1. The guide surface 5b is formed at a position from the lower end position of the guide inclined surface 5a to a substantially central position in the height direction of the guide member 5. A contact avoiding surface 5c that is recessed inward from the guide surface 5b and is not in contact with the first connector electrode 1 is formed under the guide surface 5b.

  Further, as shown in FIG. 2, the guide member 5 is brought into contact with a distal end portion 12 b of a terminal contact portion 12 of the second connector electrode 3 to be described later, from the connector housing 2 of the second connector electrode 3. An anti-removal portion 8 is formed to prevent the omission. The retaining prevention portion 8 is formed by reducing the diameter from the lower end position of the contact avoidance surface 5c toward the insertion direction of the first connector electrode 1. The retaining prevention portion 8 has a flange shape that protrudes inward from the contact avoidance surface 5c, and overlaps and covers a distal end portion 12b of a terminal contact portion 12 of the second connector electrode 3 described later. Stick out.

  The inner diameter varying portion 2B is provided between the connector electrode guide portion 2A and the connector electrode holding portion 2C, and has a cylindrical body that gradually decreases in outer diameter from the connector electrode guide portion 2A side toward the connector electrode holding portion 2C side. It is formed as. The inner diameter variation portion 2B is configured to displace a terminal contact portion 12 (to be described later) inward by pushing the second connector electrode 3 into the connector insertion direction (the direction indicated by the arrow X in FIG. 1), thereby moving the first connector. It has an inner wall surface 9 in the shape of a mortar that gradually increases the force to adhere to the periphery of the electrode 1. From another viewpoint, the inner wall surface 9 has a shape that is narrowed down so as to gradually approach inward from the connector insertion direction to the back.

  The connector electrode holding portion 2C is provided so as to be connected to the inner diameter varying portion 2B, and is formed as a cylindrical body that slidably accommodates and holds the second connector electrode 3 therein. The connector electrode holding portion 2C is a cylindrical body having an outer diameter smaller than that of the connector electrode guide portion 2A, which is also formed as a cylindrical body. When the connector electrode holding portion 2C is pushed by the first connector electrode 1 having the distal end portion 1A inserted into the second connector electrode 3, the connector electrode holding portion 2C is connected to the second connector electrode 3 along the inner wall surface 10. The housing 2 is slid to the back of the housing 2.

  The second connector electrode 3 has an electrode main body 11 having a bottom portion into which the first connector electrode 1 is inserted, and a terminal contact portion 12 provided on the front side of the electrode main body 11 in the connector insertion direction. doing.

  The electrode body portion 11 includes a bottom portion 11a and a side wall portion 11b that surrounds the bottom portion 11a and forms a cylindrical peripheral wall. The bottom portion 11 a is a tip receiving surface of the first connector electrode 1 that abuts the tip surface 13 of the first connector electrode 1. The side wall portion 11b constitutes a cylindrical peripheral wall, and the front end portion 1A of the first connector electrode 1 is inserted and fitted therein. Further, the side wall portion 11b is in a state in which its outer peripheral surface is in surface contact with the inner wall surface 10 of the connector electrode holding portion 2C. As long as the first connector electrode 1 is not inserted and pushed in, the electrode main body 11 is disposed at the lower end position of the inner diameter varying portion 2B by the frictional force between the side wall portion 11b and the inner wall surface 10. Keep holding. This position is defined as the initial position of the second connector electrode 3.

  The terminal contact portion 12 is composed of a plurality of cantilever beams extending from the annular end surface 14 of the electrode body portion 11 in a direction opposite to the direction X in which the first connector electrode 1 is inserted. The terminal contact portion 12 is formed of a conductive metal material integrally with the electrode main body portion 11, and the surface thereof is plated. For example, the terminal contact portions 12 have 10 to 20 and are provided at substantially equal intervals with respect to the annular end surface 14 of the electrode main body portion 11. By arranging a large number of terminal contact portions 12 at regular intervals with respect to the electrode main body portion 11, the terminal contact portions 12 can be uniformly adhered to the periphery of the first connector electrode 1 from the outside. In addition, even if a failure occurs in some of the terminal contact portions 12 among the many, the remaining terminal contact portions 12 are in close contact with the periphery of the first connector electrode 1, so that contact failure between the connector electrodes can be eliminated.

  The terminal contact portion 12 is integrally provided with a base end portion 12a as a base on the annular end surface 14 of the electrode main body portion 11, while the tip end portion 12b is a free end directed in a direction opposite to the connector insertion direction X. . The terminal contact portion 12 is formed as an elongated tongue piece shape extending so as to gradually open outward from the proximal end portion 12a toward the distal end portion 12b. The distal end portion 12 a extends to a position close to the retaining prevention portion 8 formed at the lower end of the guide member 5 and is covered with the retaining portion 8. Moreover, these terminal contact parts 12 are all located in the inner side surrounded by the inner wall surface 9 whose diameter is reduced in the inner diameter variation part 2B at the initial position.

  At the initial position of the second connector electrode 3 described above, each terminal contact portion 12 maintains a non-contact state with respect to the inner wall surface 9 of the inner diameter varying portion 2B. When the distal end portion 1A of the first connector electrode 1 is inserted and fitted into the electrode body 11, and the second connector electrode 3 is pushed into the connector insertion direction by the first connector electrode 1, each terminal contact portion 12 Moves along the reduced inner wall surface 9 and is displaced inward while receiving an external force from the inner wall surface 9. The terminal contact portion 12 has an elastic function of returning to the original state when the external force from the inner wall surface 9 is released.

  Further, the terminal contact portion 12 receives an external force from the inner wall surface 9 and is displaced inward to be in close contact with the periphery of the first connector electrode 1, but the contact state is point contact or line contact. When the contact state is a point contact or a line contact, the terminal contact portion 12 can ensure a sufficient contact pressure with respect to the first connector electrode 1 and can maintain a stable electrical contact state. That is, when the contact force is the same, the smaller the contact area, the higher the contact pressure can be maintained. On the other hand, if contact is made over a wide range, the expected contact pressure cannot be ensured due to the influence of surface roughness, flatness, etc., resulting in an increase in electrical resistance.

  Next, the fitting operation of the electrical connector having the above configuration will be described with reference to FIGS. FIG. 3 is a view showing a state before the first connector electrode is inserted into the connector housing. Before the first connector electrode 1 is inserted into the connector housing 2, the second connector electrode 3 is positioned at an initial position where the terminal contact portion 12 is not in contact with the inner wall surface 9 of the inner diameter varying portion 2B. doing.

  From the state of FIG. 3, the first connector electrode 1 is inserted into the connector housing 2 as shown in FIG. Then, when the axial center of the first connector electrode 1 and the connector housing 2 is not shifted, the tip 1A of the first connector electrode 1 is guided to the guide surface 5b formed at the center of the guide member 5 as it is. It is inserted into the back of the housing. When the axial center of the 1st connector electrode 1 and the connector housing 2 has shifted | deviated, the front-end | tip part 1A of the 1st connector electrode 1 contacts the guide inclined surface 5a, and the front-end | tip part 1A is along this guide inclined surface 5a. Is guided to the guide surface 5 b, and the first connector electrode 1 is set in an appropriate insertion direction with respect to the second connector electrode 3.

  As shown in FIG. 5, when the first connector electrode 1 is inserted into the connector housing 2 while being guided by the guide surface 5 b, the distal end portion 1 </ b> A contacts the terminal contact portion 12 of the second connector electrode 3. Without intruding into the electrode body 11. Then, as shown in FIG. 6, when the distal end surface 13 of the first connector electrode 1 reaches the bottom 11 a of the electrode main body 11, the insertion fitting force of the first connector electrode 1 is connected to the side wall 11 b of the electrode main body 11 and the connector. When the frictional force with the inner wall surface 10 of the housing 2 is exceeded, the second connector electrode 3 is pushed into the connector insertion direction and starts to move together with the first connector electrode 1.

  At this time, when the second connector electrode 3 is pushed into the connector insertion direction in the back together with the first connector electrode 1, the terminal contact portion 12 that is in a non-contact state with the inner wall surface 9 of the inner diameter varying portion 2B is The inner wall surface 9 having a mortar shape that is reduced in diameter toward the back is rubbed and gradually displaced inward. When the terminal contact portion 12 receives an external force from the inner wall surface 9 while being in contact with the inner wall surface 9 and is pushed into the connector housing 2, the terminal contact portion 12 is displaced inward along the shape of the inner wall surface 9. To do. That is, the terminal contact portion 12 gradually changes from a state in which the tip end portion 12b is opened outwardly like a petal, with the tip end portion 12b being closed inward. And the terminal contact part 12 increases gradually the force closely_contact | adhered to the circumference | surroundings of the 1st connector electrode 1 by the said inner wall surface 9. As shown in FIG.

  The terminal contact portion 12 is formed as an elongated tongue-shaped piece extending so as to gradually open outward from the proximal end portion 12a toward the distal end portion 12b, so that the degree of pressure applied to the first connector electrode 1 is increased. Is smaller in the mating direction. For this reason, a decrease in the fitting force of the second connector electrode 3 due to an instantaneous movement in the pulling direction of the first connector electrode 1 due to variation in insertion or disturbance of the first connector electrode 1 is reduced. An increase in resistance can be prevented.

  Then, as shown in FIG. 7, when the second connector electrode 3 is further pushed into the connector insertion direction and inserted into the innermost part in the design, the terminal contact portion 12 is point-contacted around the first connector electrode 1. Or it makes line contact and adheres with sufficient contact pressure. As a result, the first connector electrode 1 and the second connector electrode 3 establish an electrical connection through which a current flows without resistance.

  On the other hand, in order to release the fitting state between the first connector electrode 1 and the second connector electrode 3, the first connector electrode 1 is pulled out from the connector housing 2. Then, the second connector electrode 3 slides together with the first connector electrode 1 using the inner wall surface 10 of the connector electrode holding portion 2C as a guide, and the second connector electrode 3 reaches the initial position. When the second connector electrode 3 reaches the initial position, the terminal contact portion 12 of the second connector electrode 3 comes into contact with the retaining prevention portion 8 provided at the lower end of the guide member 5. As a result, further sliding of the second connector electrode 3 is prevented. On the other hand, the first connector electrode 1 comes out of the electrode body 11 of the second connector electrode 3 and releases the fitting with the second connector electrode 3. Then, the first connector electrode 1 is finally taken out from the connector housing 2.

  According to the electrical connector of the first embodiment configured as described above, the terminal contact portion 12 of the second connector electrode 3 is along the inner wall surface 9 with a reduced diameter of the inner diameter varying portion 2B formed in the connector housing 2. Unlike the connector structure in which both contact portions are rubbed and contacted from the beginning of the fitting of both the connector electrodes 1 and 3 since both of them move and displace inward and closely contact the periphery of the first connector electrode 1, Both connector electrodes 1 and 3 can be brought into electrical contact with each other without the contact portion being in sliding contact. Therefore, according to the electrical connector of the first embodiment, it is possible to suppress the peeling of the plating of the terminal contact portion 12, and to realize an excessive temperature rise due to an increase in connector energization resistance and a longer life of the connector (increase in the number of mating). be able to. In this electrical connector, not only when the first connector electrode 1 and the second connector electrode 3 are fitted, but also when the fitting is released, it can be released by a single fitting release operation. An effect can be obtained.

  Also, according to the electrical connector of the first embodiment, the first connector electrode 1 is pushed into the first connector electrode 1 by being inserted into the electrode main body 11 of the second connector electrode 3, and the second connector electrode 3 is pushed into the back of the connector insertion direction and moves so that both connector electrodes are engaged, so that it can be engaged in a single operation rather than a complicated multi-step operation, and the connector electrodes can be fitted together. It can be easy. Further, according to this electrical connector, since a complicated fitting mechanism is unnecessary, a simple, lightweight and inexpensive connector can be obtained.

  Moreover, according to the electrical connector of Embodiment 1, since the inner diameter variation part 2B formed in the connector housing 2 is the inner wall surface 9 having a mortar shape, the terminal contact part 12 is displaced inward so that the first connector electrode 1 The force of close contact with the surroundings can be increased, and the electrical connection state between the first connector electrode 1 and the second connector electrode 3 can be ensured.

  In addition, according to the electrical connector of the first embodiment, since the terminal contact portion 12 is formed from a plurality of cantilever-shaped terminals, the terminal contact portion 12 having a cantilever shape has a reduced diameter of the inner diameter varying portion 2B. It is easy to be displaced due to the pressing force from the wall surface 9, and to be in close contact with the periphery of the first connector electrode 1. In addition, since there are a plurality of terminal contact portions 12, multiple contacts are made with respect to the first connector electrode 1, and even if a connection failure occurs at some of the contacts, the influence can be reduced or eliminated.

  In addition, according to the electrical connector of the first embodiment, the terminal contact portion 12 is point-contacted or line-contacted with the first connector electrode 1, so that a large number of contacts surround the first connector electrode 1 from the circumferential direction. Therefore, a stable contact force (contact pressure) can be maintained, and the connection resistance is stabilized. Moreover, in this electrical connector, the influence of the surface roughness of the first connector electrode 1 can be reduced or eliminated because it is based on point contact or line contact with a large number of contacts.

  Further, according to the electrical connector of the first embodiment, the guide member 5 that guides the insertion of the first connector electrode 1 is provided inside the connector electrode guide portion 2A of the connector housing 2, so The connector electrode 1 can be inserted and fitted into the second connector electrode 3 in an appropriate posture, and the damage of the second connector electrode 3 can be prevented and the insertion force of the second connector electrode 3 can be stabilized. Therefore, in this electrical connector, the first connector electrode 1 and the second connector electrode 3 can be inserted and fitted with a smooth operation.

  In addition, according to the electrical connector of the first embodiment, since the guide member 5 is provided with the retaining prevention portion 8 that prevents the second connector electrode 3 from coming off from the connector housing 2, the second connector electrode 1 When the fitting from the connector electrode 3 is released, the tip of the terminal contact portion 12 of the second connector electrode 3 comes into contact with the retaining portion 8 and the first connector electrode 1 can be reliably removed. Moreover, in this electrical connector, it is possible to prevent the second connector electrode 3 from being detached from the connector housing 2 in the event of a malfunction or malfunction.

“Embodiment 2”
The second embodiment is an example in which an external electrode for extracting electric power from the second connector electrode 3 fitted to the first connector electrode 1 is arranged below the connector housing 2 in the electrical connector of the first embodiment. FIG. 8 shows an example of the external electrode, and FIG. 9 shows another example of the external electrode.

  The external electrode 15 shown in FIG. 8 includes an elastic portion 15A that follows the sliding movement of the second connector electrode 3 and contacts the bottom portion 11a of the second connector electrode 3, and an electrode extraction portion 15B that is integrated with the elastic portion 15A. And consist of The external electrode 15 is a bus bar made of a conductive metal material having a spring property, and an elastic portion 15A having a substantially U shape is disposed below the connector housing 2 so as to contact the bottom portion 11a of the second connector electrode 3. At the same time, a part of the electrode lead-out portion 15B is provided so as to protrude out of the outer connector housing 16 from the vicinity of the bottom of the outer connector housing 16 having a bottomed cylindrical shape provided outside the connector housing 2.

  The elastic portion 15A formed as a part of the bus bar is pressed by the second connector electrode 3 and applied with a compressive force when the first connector electrode 1 is inserted and fitted into the second connector electrode 3, but the second connector electrode 1 When the first connector electrode 1 fitted into the connector 3 is pulled out, the second connector electrode 3 is urged in the direction opposite to the insertion direction of the first connector electrode 1 by the elastic restoring force due to the accumulated compression force.

  The external electrode 15 shown in FIG. 9 has an elastic portion 15A as a coil spring and an electrode extraction portion 15B as a bus bar. The coil spring is provided in the connector housing 2 and is in contact with the bottom 11 a of the second connector electrode 3. In addition, the coil spring is attached in contact with the other end portion of the bus bar that protrudes outside the outer connector housing 16 and disposed in the outer connector housing 16.

  The elastic portion 15A made of a coil spring is pressed and compressed by the second connector electrode 3 when the first connector electrode 1 is inserted into the second connector electrode 3, but the second connector electrode 3 When the one connector electrode 1 is pulled out, the second connector electrode 3 is urged in the direction opposite to the insertion direction of the first connector electrode 1 by the elastic restoring force accumulated by the compression.

  According to the electrical connector of the third embodiment, the external electrode 15 having the elastic portion 15A that contacts the bottom portion 11a of the second connector electrode 3 following the sliding movement of the second connector electrode 3 is disposed below the connector housing 2. Therefore, even if the second connector electrode 3 slides in the connector housing 2, the elastic portion 15 </ b> A follows the movement, and power can be stably taken out from the second connector electrode 3 by the external electrode 15. As a result, a stable electric circuit is formed, and it becomes possible to prevent an unstable output due to an electric resistance fluctuation in the connector housing 2 and an excessive temperature rise due to an increase in resistance.

  Further, according to the electrical connector of the third embodiment, the second connector electrode 1 is pulled out when the first connector electrode 1 is pulled out by the elastic restoring force of the elastic portion 15A that has accumulated the compressive force pushed and compressed by the second connector electrode 3. 3 can be automatically pushed back to the initial position.

  Moreover, according to the electrical connector of Embodiment 3, since the elastic part 15A was formed as a part of bus bar which comprises the external electrode 15, the external electrode 15 can be comprised by one component. Further, in this electrical connector, since no force other than the frictional resistance between the bottom wall and the outer wall of the outer connector housing 16 is generated, the resistance during operation (force necessary for operation) is stabilized.

  Further, according to the electrical connector of the third embodiment, since the elastic portion 15A is a coil spring attached to the bus bar constituting the external electrode 15, the second connector electrode 3 is moved to the initial position by the elastic force of the coil spring. The operation to push back automatically is stabilized.

“Embodiment 4”
FIG. 10 shows an electrical connector of the fourth embodiment. In the fourth embodiment, the shape of the terminal contact portion 12 is not a curved shape but a straight shape from the base end portion 12a to the tip end portion 12b. Of course, the terminal contact portion 12 is arranged so that the tip end portion 12b does not contact the first connector electrode 1 when the tip end portion 1A of the first connector electrode 1 is inserted into the electrode main body portion 11 of the second connector electrode 3. Has been.

  According to the electrical connector of Embodiment 4, since the terminal contact part 12 is made into the straight shape, manufacture of the 2nd connector electrode 3 becomes easy.

“Embodiment 5”
In the first embodiment, the guide member 5 is attached to the connector housing 2 with male and female screws. However, the guide member 5 can be attached to the connector housing 2 by other means.

  For example, a hole penetrating in and out of the connector electrode guide portion 2A is formed, and the guide member 5 is fixed with a bolt through the hole. Instead of forming the male screw 7, the guide member 5 is formed with a screw hole to which the bolt is attached. Alternatively, instead of attaching with a bolt, a pin is inserted into a hole formed in the guide member 5 through a hole penetrating the inside and outside of the connector electrode guide portion 2A, and the guide member 5 is attached to the connector electrode guide portion 2A with the pin. You may do it.

  In addition, the guide member 5 can be formed integrally with the connector electrode guide portion 2A, instead of using the guide member 5 as a separate component. When the guide member 5 is integrated with the connector electrode guide portion 2A, it is formed by resin injection molding, iron casting, aluminum die casting, or the like.

  When the guide member 5 is formed integrally with the connector electrode guide portion 2A, the terminal contact portion 12 confined inside when the second connector electrode 3 is inserted into the connector housing 2 is opened by the springback effect. Can be installed at an appropriate position. This can be designed in consideration of cost, mass, assembly work, etc. for the required functions and performance.

  INDUSTRIAL APPLICABILITY The present invention can be used for an electrical connector in which male and female connector electrodes are inserted and fitted to electrically connect both connector electrodes.

DESCRIPTION OF SYMBOLS 1 ... 1st connector electrode 2 ... Connector housing 2A ... Connector electrode guide part (connector housing)
2B ... Inner diameter variation part (connector housing)
2C ... Connector electrode holder (connector housing)
DESCRIPTION OF SYMBOLS 3 ... 2nd connector electrode 5 ... Guide member 8 ... Retaining prevention part 9 ... Inner wall surface of inner diameter fluctuation | variation part 11 ... Electrode main-body part 12 ... Terminal contact part 12a ... Base end part of a terminal contact part 12b ... Tip of a terminal contact part Part 15: External electrode 15A ... Elastic part 15B ... Electrode extraction part

Claims (10)

In the electrical connector for fitting the first connector electrode to the second connector electrode provided in the connector housing and electrically connecting the connector electrodes to each other,
The connector housing is
An inner diameter variation part that decreases the inner diameter from the front of the connector insertion direction toward the back,
A connector electrode holding portion that is connected to the inner diameter varying portion and slidably accommodates and holds the second connector electrode;
The second connector electrode is
An electrode body having a bottom for inserting the first connector electrode therein;
A terminal contact portion provided on the front side of the electrode body portion in the connector insertion direction, and
As the first connector electrode is inserted into the electrode main body portion, the terminal contact portion is pushed by the first connector electrode and the electrode main body portion is pushed and moved deeper in the connector insertion direction. The electrical connector, wherein the electrical connector is closely attached to the periphery of the first connector electrode by moving along the reduced inner wall surface of the inner diameter varying portion and moving inward. The electrical connector according to claim 1,
The inner diameter variation part has a mortar shape that gradually increases the force to displace the terminal contact part inwardly and closely contact the periphery of the first connector electrode when the second connector electrode is pushed inward in the connector insertion direction. An electrical connector having an inner wall surface. The electrical connector according to claim 1 or 2,
The electrical connector according to claim 1, wherein the terminal contact portion includes a plurality of cantilever beams extending in a direction opposite to a direction in which the first connector electrode is inserted from an annular end surface of the electrode main body portion. The electrical connector according to any one of claims 1 to 3, wherein:
The electrical contact, wherein the terminal contact portion is in point contact or line contact with the first connector electrode. The electrical connector according to any one of claims 1 to 4, wherein:
An electrical connector, wherein an external electrode having an elastic portion that contacts the bottom of the second connector electrode following the sliding movement of the second connector electrode is disposed below the connector housing. The electrical connector according to claim 5,
The elastic portion urges the second connector electrode in a direction opposite to the insertion direction of the first connector electrode when pulling out the first connector electrode fitted to the second connector electrode. connector. The electrical connector according to claim 6,
The electrical connector, wherein the elastic part is formed as a part of a bus bar constituting the external electrode. The electrical connector according to claim 6,
The said elastic part consists of a coil spring attached to the bus bar which comprises the said external electrode. The electrical connector characterized by the above-mentioned. The electrical connector according to any one of claims 1 to 8, comprising:
A connector electrode guide portion is formed in front of the inlet of the inner diameter variation portion of the connector housing, and a guide member for guiding insertion of the first connector electrode is provided inside the connector electrode guide portion. . The electrical connector according to claim 9,
The electrical connector according to claim 1, wherein the guide member has a retaining portion that contacts a tip of the terminal contact portion and prevents the second connector electrode from being detached from the connector housing.

Images