JP2011222338A - Connector mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a detachable connector pin terminal structure having a long service life, in which a connector pin terminal is provided with a connector pin and a connector spring inside a connector, forces applied from directions other than the operation direction of the connector spring are reduced, and a self-cleaning function is provided so as to increase durability of the connector pin and the connector spring.SOLUTION: A connector mechanism is configured so that a tip of a connector pin 4 can be cleaned with a small load applied on the connector pin 4 and a connector spring 5 by allowing a guide rib 2, which is provided on a connector case 3, to slide along a casing guide groove 1, which is provided on an electronic equipment 8.

Description

  The present invention relates to a cell cleaning structure with pin connector terminals.

  A structure of a general pin connector terminal will be briefly described with reference to the drawings. FIG. 4 is a cross-sectional view showing a part of an electronic device constituted by pin connector terminals. A state in which the connector pin 22 is in pressure contact with an electronic device 25 having a contact terminal 24 is shown. FIG. 5 is a plan view showing a state where the pin connector case 21 and the electronic device 25 are pressurized. Further, FIG. 6 is a graph showing the displacement of the pin connector in each state, the pin connector load, and the so-called cleaning amount at which the pin connector rubs the contact terminal surface. The connector case 21 includes a connector pin 22 for conducting electricity, a connector spring 23 that repeatedly expands and contracts so that the connector pin 22 obtains contact pressure, and a connection terminal that is soldered (not shown) and is transmitted from the connector pin 22. Thus, the electricity is connected to a connection terminal (not shown) through the connector spring 23 and is conducted to the electronic device.

The connector pin 22 slides perpendicularly to the winding direction of the connector spring 23 inside the connector case 21 and contacts the connection terminal portion 24 with a predetermined load to conduct electricity.
In the connection terminal portion 24 that comes into contact with the connector pin 22, an oxide film is formed on the surface of the terminal due to dust, dirt, moisture, etc. contained in the air, or dust or dust itself adheres as dirt, resulting in poor connection. It is generally known, and some measures for removing dirt attached to the terminal are required for an electronic device to be attached and detached. Since a general pin connector terminal slides only perpendicularly to the connector spring 23, the connector pin 22 can contact the connection terminal portion 24 and obtain a predetermined load as shown in the graph of FIG. The cleaning amount for rubbing the surface of the connection terminal portion 24 is zero and is not cleaned.

  For this reason, various conventional methods for cleaning pin connector terminals are considered, and two typical examples are shown.

  For example, in the pin connector terminal described in Patent Document 1, there is a method in which the pin connector terminal is moved horizontally and the tip of the connector pin is rubbed against a horizontal surface from an inclined surface provided in the vicinity of the connection terminal portion to remove dirt on the connector pin tip. . FIG. 7 is a structural plan view showing a state in which the connector case 31 moves horizontally and fits into the connection terminal portion 34. FIG. 8 is a graph of the state shown in FIG. 7, and shows the displacement amount of the connector pin 32 due to the movement of the connector case 31 and the generated load and cleaning amount.

  In the connector case 31 described in Patent Document 1, a connection terminal portion 34 having a recess into which the connector pin 32 is fitted and a surface 36 on which the tip of the connector pin 32 slides are provided in the vicinity of the connection terminal portion 34. A self-cleaning structure is shown in which dirt is removed from the tip of the connector pin 32 by sliding to the connection terminal portion 34 in a state where a load is applied to the pin 32.

  In FIG. 7, the connector case 31 moves horizontally from the lateral direction and comes into contact with the sliding surface 36, and a load is gradually applied to the connector pin 32 to compress the built-in connector spring 33. In the horizontal state, the sliding surface 36 is slid with a force equal to or higher than a specified pressure necessary for connection to remove dirt at the tip of the connector pin 32, and the tip of the connector pin 32 is fitted into the connection terminal portion 34. The specified pressure.

  In the connector terminal described in Patent Document 2, FIG. 9 is a cross-sectional view showing a part of an electronic device. The connector case 41 is provided with a connector eccentric contact portion 46 that is eccentric from the center of the connector pin at the tip of the connector pin 42 to be connected, and a guide structure 45 that allows the connector pin 42 to rotate and slide vertically with respect to the connector spring 43. The connector eccentric contact portion 46 having a radius r which is eccentric from the center of the pin connector to the connector pin tip is slid while drawing an arc on the surface of the connection terminal portion 47, thereby removing dirt.

  FIG. 10 is a plan view showing the movement of the connector terminal described in Patent Document 2. FIG.

  FIG. 11 is a graph showing the transition of the load and the cleaning amount due to the displacement of the connector pin of FIG.

  FIG. 10 is a diagram illustrating a state of the pin connector terminal from when the connector pin is in the open state to when it reaches the specified pressure. When the connection device 48 approaches the connector case 41 and the connector pin 42 comes into contact with the connection terminal portion 47, a preset load of the connector spring 43 is generated on the connector pin 42. When the connecting device 48 further pushes the connector pin 42, the connector pin 42 pushes the connector spring 43 while rotating along the guide groove 44 provided in the connector case 41. At this time, the connector eccentric contact portion 46 at the distal end of the connector pin 42 rubs the surface of the connection terminal portion 47 and adheres to the connector eccentric contact portion 46 while drawing an arc whose radius is a distance r away from the center of the connector pin 42. Scrub off dirt. When the guide groove rotates 360 degrees, it returns to the original.

JP-A-1-014485 JP-A-8-0175038

  The pin connector terminal has a simple structure that operates vertically with respect to the coiled connector spring built into the connector pin, and the built-in coil spring has only a vertical operation that expands and contracts the coil spring using an established technology. If used, it has a structure that can ensure high durability. In addition, because the structure can only operate perpendicular to the winding direction of the coil spring, it does not have a so-called terminal cleaning mechanism that removes dirt on the terminal surface, so it can be used as a fixed contact terminal or a detachable electronic device. When used in equipment, dirt on the contact terminal surface is removed by providing a structure that allows the terminal surface to be rubbed while the tip of the pin connector terminal and the contact surface are pressurized in order to remove dirt and oxide film when attaching and detaching. ing.

  However, the connector main body 31 shown in Patent Document 1 is a connector in a state in which a predetermined load is applied to the pin connector and a force other than the direction perpendicular to the coil spring is applied. The pin connector case 31 is moved by holding the angle of 90 degrees with respect to the spring 33 and moving it horizontally. Therefore, the pin connector 32 and the connector spring 33 bend inside the connector case 31, and a load that impairs the expansion and contraction operation of the spring is generated inside the connector, causing abnormal wear and deformation of the connector and increasing the electrical resistance.

  For this reason, there is a problem that the high durability performance inherent to the pin connector terminal cannot be fully utilized because it cannot be used for equipment that repeatedly expands and contracts frequently.

  In the connector case 41 shown in Patent Document 2, a force is applied from zero load to a specified pressure with the connector pin 42 and the connector spring 43 being eccentric, and the connector case 41 is operated with the spring biased. As a result, bending and smooth sliding are impaired. Furthermore, since the guide groove 44 is provided inside the connector case 41, the connector body becomes a dedicated pin, and there is a problem that it lacks versatility.

  In order to solve the above-mentioned problems, the present invention makes it possible to rub the connection terminal surface in a state where the pressure of the pin connector terminal during the cleaning of the terminal surface is reduced with respect to a predetermined contact pressure. It is possible to provide a self-cleaning structure that removes dirt at the tip of the connector pin while reducing the load applied to the connector pin and the connector spring.

  In order to solve the conventional problem, the connector terminal structure of the present invention starts cleaning the tip of the connector pin when the connector pin starts to contact the connection terminal portion and reaches a predetermined load. Inside the electronic device in which the pin connector terminal is housed in the connector body that can be moved to finish the cleaning before reaching the required load and the guide rib and the guide groove that can move the guide rib in a predetermined path It is a pin connector terminal structure that can be cleaned in a state where the load applied to the connector pin and the connector spring is reduced, and the durability of the connector is improved.

  According to the connector terminal guide groove structure of the present invention, when the connector main body moves along the guide groove, the connector pin can be cleaned in a state where the load applied to the connector pin is reduced by rubbing the contact surface at a specified pressure or less. The load of the connector pin and the connector spring is reduced, and a long-life pin connector terminal can be realized.

FIG. 1 is a perspective external perspective view showing a part of a terminal according to Embodiment 1 of the present invention. Connector terminal operation state diagram in Embodiment 1 of the present invention The figure which shows the graph which shows the pin connector terminal operation state and load and cleaning quantity Sectional view of a part of an electronic device that uses general pin connector terminals Connector pin operation state diagram for general pin connector terminals Graph showing general pin connector terminal operation, load and cleaning amount Connector terminal operation state diagram in Patent Document 1 The figure which shows the graph which shows the connector terminal operation | movement and the load and cleaning amount in patent document 1 Sectional drawing of the part of the electronic device in which the connector terminal in patent document 2 is used Connector terminal operation state diagram in Patent Document 2 The figure which shows the graph which shows the connector terminal operation | movement and load and cleaning in patent document 2

  Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1)
FIG. 1 is a perspective external perspective view of a connector according to Embodiment 1 of the present invention.
The connector case 3 has connector pins 4 and connector springs 5 and connector side guide ribs 2. The connector pin 4 is pressed by the connector spring 5 and comes into contact with the connection terminal portion 6 provided in the connection device 7 to conduct an electrical signal.

  The connector case 3 is provided in the housing 8. A housing guide groove 1 is provided in the housing 8. The connector guide rib 2 is slidably moved along the housing guide groove 1 in the housing 8.

  FIG. 2 is a state diagram showing the movement of the connector case 3 and shows a state where the connector case 3 is moved along the housing guide groove 1.

  FIG. 3 is a graph showing changes in the load applied to the connector pins and the cleaning amount when the connector case 3 shown in FIG. 2 moves.

  In the state where the connector pin 4 shown in FIG. 2 is opened, the connector pin 4 is not pressurized, so the load is zero. However, the built-in connector spring 5 and connector case 3 are provided on the end face inside the connector. It has a preset load pressed with a load of.

  The connector-side guide rib 2 moves along the housing guide groove 1 and contacts the connection terminal portion 6 provided in the connection device 7. The connector pin 4 contacts at a predetermined position from the end face of the housing, and a preset load is applied to the connection terminal portion 6.

  As shown in FIG. 2, the connector case 3 further moves leftward in the plan view along the housing guide groove 1, so that the connector side guide rib 2 becomes a plan view along the slope provided in the housing guide groove 1. The housing guide groove 1 shown is moved obliquely upward to the left and reaches the left end of the housing guide groove 1 in the plan view shown in FIG. At this time, since the connector pin 4 moves while pressurizing the connection terminal portion 6, the surface of the connection terminal portion 6 is rubbed to remove the dirt attached to the connector pin 4.

  The connector-side guide rib 2 shown in the plan view of FIG. 2 moves further upward from the left end of the housing guide groove 1 to reach a specified pressure and is held and fixedly held by a lock mechanism (not shown).

  Since the tip end of the connector pin 4 finishes the cleaning operation before reaching the specified pressure as shown in FIG. 2, the force applied to the connector pin 4 and the connector spring 5 can be less than a predetermined spring load, thereby reducing the burden on the connector. it can.

  As described above, by ending the cleaning before reaching the predetermined load, the load applied to the pin connector terminal is reduced, the durability of the pin connector terminal can be improved, and a connector pin terminal structure having a long-life self-cleaning mechanism can be obtained.

  Furthermore, since the housing guide groove 1 is provided on the electronic device housing side, the operation timing and the cleaning timing can be easily adjusted in the shape of the guide groove. Therefore, the connector pin to be used is a general-purpose connector pin. And has the advantage of being easily adjustable.

  An electronic device having a connector pin structure having a guide groove according to the present invention can repeatedly attach and detach a built-in connection device frequently and can obtain a connector pin terminal having a long life. By changing the shape, it is useful for applications such as an electronic device with a detachable function having high versatility at low cost.

DESCRIPTION OF SYMBOLS 1 Housing | casing guide groove 2 Connector side guide rib 3, 21, 31, 41 Connector case 4, 22, 32, 42 Connector pin 5, 23, 33, 43 Connector spring 6, 24, 34, 47 Connection terminal part 7, 25, 35, 48 Connection device 8, 26, 49 Electronic device 36 Sliding surface 45 Connector guide groove 46 Connector eccentric contact portion

Claims (1)

A pin connector;
A connector spring that expands and contracts the pin connector in the vertical direction;
A case for holding the pin connector and the connector spring;
A guide rib provided outside the case;
A housing containing the case;
A guide groove that is provided in the housing and in which the guide rib moves, and the guide groove has a crank shape,
The case is slid horizontally by the guide groove before the load by the pin connector with respect to the external connection terminal is maximized and while the load by the pin connector with respect to the external connection terminal becomes a predetermined load. A connector structure characterized by that.

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