JP5594829B2 - Low insertion force connector - Google Patents

Description

  The present invention relates to a low insertion force connector, and more particularly, to a low insertion force connector capable of fitting and detaching a housing with a low force without requiring complicated spiral processing as in the conventional products.

As a conventional low insertion force connector, the invention described in Patent Document 1 is known.
12A and 12B are diagrams for explaining a low insertion force connector described in Patent Document 1. FIG. 12A is a plan sectional view of the first connector and the second connector, and FIG. 12B is a perspective view of the first connector and the second connector. It is.
The low insertion force connector described in Patent Document 1 includes a male connector 110, a female connector 120, and a handle 130. The male connector 110 is locked in the connector fitting direction from an outlet of a shaft hole that penetrates the housing. A flexible locking arm 110F having a claw portion 110T and a disconnection preventing projection 110N are provided, and the female connector 120 has a temporary engagement portion 120K and a main engagement portion 120H with respect to the locking claw portion 110T of the flexible locking arm 110F. Are sequentially provided in the connector fitting direction, and a screw projection 120J is provided on the extension of the shaft hole. The handle 130 is provided with a screw portion 130J for the screw projection 120J at the tip of the shaft of the handle 130, and a removal prevention projection 110N. An annular portion 130K having an insertion groove 130M with respect to the insertion groove 130M, and is connected to the removal prevention projection 110N. It is constituted by a and sequentially engageable with the annular groove 130C and the rotation shaft of the handle consisting forms communicating the a 110C.

Japanese Patent No. 2613998

<Operation of the low insertion force connector described in Patent Document 1>
With the male connector 110 and the female connector 120 temporarily engaged, the shaft tip of the handle 130 is inserted into the shaft hole 110A of the male connector 110, and the removal preventing projection 110N is inserted into the insertion groove 130M and the flexible locking arm The constricted portion 110C of 110F is engaged with the annular groove 130C. When the locking claw portion 110T of the flexible locking arm 110F engages with the temporary engagement hole 120K of the female connector 120 to align the connectors with each other and then pushes the shaft tip of the handle 130, the flexible locking arm 110F The constricted portion 110C of the stop arm 110F is pushed outward to release the temporary engagement of the locking claw portion 110T. The disconnection preventing projection 110N of the male connector 110 engages with the annular groove 130C of the handle 130 to fix the handle shaft in the axial direction, and the screw projection 120J of the female connector 120 is located in the insertion groove 130M of the handle 130. . Then, by rotating the shaft of the handle 130 halfway with the handle handle 130H, the screw projection 120J is pulled up along the screw portion 130J. The screwing protrusion 120J is positioned on the insertion notch of the screw part 130J that is half-turned, and the removal prevention protrusion 110N of the male connector 110 is positioned on the insertion groove 130M of the annular part 130K. With the arm 110F in an expanded state, the locking claw portion 110T is positioned to face the main engagement hole 120H of the female connector 120, and finally, the handle claw portion 110T is pulled out from both the connectors 110 and 120. Engages with the main engagement hole 120H of the female connector 120 to lock the connectors 110 and 120.

<Problem of low insertion force connector described in Patent Document 1>
As described above, according to the invention described in Patent Document 1, since the rotating shaft is pulled out after the connector is fitted, the connector is prevented from being enlarged and heavy, and it can be confirmed that the connector is completely fitted. On the other hand, there is an effect that the fitting is prevented, but the rotating shaft used for the low insertion force is provided with a threaded portion, so that there is a problem that complicated spiral machining is required.

<Object of the present invention>
The present invention has been made to solve the above-described drawbacks, and an object thereof is to provide a low insertion force connector that eliminates the need for complicated spiral processing such as a threaded portion.

  The present invention has been made to solve the above-mentioned problems, and the first invention of the present application is a low insertion force connector in which a first housing and a second housing are fitted with a low insertion force using a torque wrench. The first housing has a cross opening on the front surface, and the second housing is inserted into a slope corresponding to the cross opening in a temporary fitting state with the first housing and on the other side with a slope for insertion. A release slope opposite to the insertion slope is formed, and the torque wrench grips the grip portion and the grip portion, and has a T-shaped wrench on the front surface, and the T-wrench is placed on the cross opening. When inserted and turned to the one side, the T-shaped wrench pushes the slope for insertion to bring the first housing and the second housing closer together, and the T-shaped wrench is inserted into the cross opening. When turned to the other side The first housing and the second housing are separated from each other by a low force when the T-shaped wrench pushes the release slope, and the first housing and the second housing are fitted or detached with a low force. Yes.

  According to a second aspect of the present invention, in the low insertion force connector of the first aspect, the insertion slope on one side and the release slope on the other side of the second housing are formed point-symmetrically with respect to the intersection of the cross openings. It is characterized by being.

  According to a third aspect of the present invention, in the low insertion force connector of the first or second aspect, the torque wrench includes a first protrusion and a second protrusion on the shaft portion from the grip side toward the T-wrench side, and the shaft portion Is provided with a stopper plate in which an opening having a size through which the first protrusion and the second protrusion cannot pass is opened from one side end toward the center, and the stopper plate is locked to the first protrusion during fitting. The insertion length of the T-wrench from the cross opening can be adjusted by engaging the stopper plate with the second protrusion when detached.

  According to the first aspect of the present invention, there is no need for complicated spiral processing such as a screw portion necessary for a conventional low insertion force connector, only a simple inclined surface is formed on the male connector side, and a general-purpose torque wrench is provided. Only by using, a low insertion force connector capable of fitting and detaching both housings with a low force can be obtained.

  According to the second invention, since the inclined surfaces are provided at two places, a low insertion force connector having stable and good operability can be obtained.

  According to the third invention, since the insertion length from the cross opening of the T-wrench can be adjusted by using the stopper plate, skill is not required and workability is improved.

FIG. 1 is an exploded perspective view showing components of a low insertion force connector according to the present invention. FIG. 2 is a perspective view showing a state immediately before fitting using a torque wrench. 3A and 3B are diagrams for explaining the T-shaped wrench operating portion, in which FIG. 3A is a front view of the male housing, and FIG. 3B is an enlarged front view of the T-shaped wrench operating portion. 4A is a perspective view of the T-shaped wrench operating portion of the male housing of FIG. 2 as viewed from the bottom and the right side, and FIG. 4B is a top view of the T-shaped wrench operating portion of the male housing of FIG. It is the perspective view seen from the direction of the right side part. FIG. 5 is a side view of a torque wrench used in the present invention. 6A and 6B are diagrams for explaining the fitting procedure of the low insertion force connector of the present invention. FIG. 6A is a front view of the male housing and the female housing temporarily seen from the female housing side, and FIG. It is the plane sectional view, in both figures (1) at the time of temporary fitting, (3) at the time of completion of fitting, (2) is the figure in the middle. FIG. 7 shows that one end of the T-wrench of the torque wrench reaches the position of the starting side of the slope for inserting the upper working part of the male housing, and the other end reaches the position of the starting side of the slope for inserting the lower working part. It is a perspective view which shows the state which is carrying out. FIG. 8 is a perspective view showing a state in which the low insertion force connector according to the present invention is fitted. FIG. 9 is a perspective view showing a state where the low insertion force connector in the fitted state is detached using a torque wrench. 10A and 10B are diagrams for explaining a procedure for detaching the low insertion force connector of the present invention. FIG. 10A is a front view of the state in which the male housing 10 and the female housing 20 are fitted together, and FIG. It is the plane sectional view, in both figures (1) at the time of fitting, (3) at the time of fitting separation, (2) is the figure in the middle. FIG. 11 is a front view of the cross opening of the female housing of the low insertion force connector of the present invention. 12A and 12B are diagrams for explaining a low insertion force connector described in Patent Document 1. FIG. 12A is a plan sectional view of the first connector and the second connector, and FIG. 12B is a perspective view of the first connector and the second connector. It is.

  Hereinafter, a low insertion force connector according to the present invention that does not require complicated spiral processing such as a threaded portion will be described with reference to the drawings.

<Four parts constituting the low insertion force connector of the present invention>
FIG. 1 is an exploded perspective view showing components of a low insertion force connector according to the present invention, and FIG. 2 is a perspective view showing a state immediately before fitting using a torque wrench. The low insertion force connector of the present invention is composed of four parts. That is, as shown in FIGS. 1 and 2, they are a male housing 10, a female housing 20, a stopper plate 30, and a torque wrench 40 (FIG. 2).
Hereinafter, the shapes and structures of these four parts will be described.

<Male housing 10>
The male housing 10 has a box shape having a space inside, and accommodates therein a large number of connection terminals (not shown) connected to the connection terminals of the female housing. A female housing 20 having a box shape is fitted in the internal space. The box shape of the male housing 10 is composed of a back surface portion 10W (FIG. 2), an upper portion 10A (FIG. 2), a bottom portion 10B (FIG. 2), a right side portion 10R (FIG. 2), and a left side portion 10L (FIG. 2). The female housing 20 is fitted from here. A T-wrench operating portion 10T described below is provided in the internal space. A stopper plate insertion hole 10K is formed near the front side at the center in the left-right direction of the upper portion 10A (FIG. 2).

<< T-wrench operating part 10T >>
3A and 3B are diagrams for explaining the T-shaped wrench operating portion, in which FIG. 3A is a front view of the male housing, and FIG. 3B is an enlarged front view of the T-shaped wrench operating portion. 4A is a perspective view of the T-shaped wrench operating portion 10T of the male housing 10 of FIG. 2 as viewed from the bottom 10B and the right side 10R, and FIG. 4B is a T-wrench of the male housing 10 of FIG. It is the perspective view which looked at the action | operation part 10T from the direction of 10 A of upper parts, and the right side part 10R.
3 and 4, the T-wrench actuating portion 10T is defined by the transverse groove space 10H (FIG. 3 (A)) with a gap into which the T-wrench 40T (FIG. 5) of the torque wrench 40 (FIG. 5) can enter. The upper working part To and the lower working part Tu, which will be described below, respectively, are made up and down.

<< Upper working part To >>
The upper working portion To has a substantially box-like shape as a whole, and is for insertion described below at the lower right side of the box with the vertical groove space 10V (FIG. 3A) extending right above the center of the horizontal groove space 10H as a boundary. A slope 10S1 and a separation slope 10S2 described below are formed below the left side.

<< Inserted slope 10S1 >>
In FIG. 3B, the slope 10S1 for insertion is from a side H12 connecting two points P1 and P2 at the front (gray) corners (corner) of the front side (female housing 20 (FIG. 2) side). Starting from the figure, at the last point P3, the length of the side H12 is reduced toward the corner point P3 on the surface (white) on the back side (back surface 10W (FIG. 2) side). As a whole, the slopes form triangles P1 (front), P2 (front), and P3 (back). In FIG. 3, the insertion slope 10S1 is not visible because it is formed on the back side of the front surface of the upper working portion To (the hypotenuse H23 of the triangles P1, P2, and P3 is indicated by a dotted line).

<< Slipping slope 10S2 >>
The separation slope 10S2 starts from a side H45 connecting two points P4 and P5 at both corners (spots) of the surface (white) on the back side (back surface portion 10W (FIG. 2)) in the drawing, and is on the near side in the drawing. The entire triangle P1 (the back) becomes a point at the last point P6 while narrowing the length of the side H45 toward the corner point P6 on the surface (gray) of the side (female housing 20 (FIG. 2) side) ) · P2 (back) · P3 (front). In FIG. 3, it can be seen that the separation slope 10S2 is formed of triangles P1, P2, and P3 (portions indicated by hatching) from the back side of the upper operation portion To toward the front side.

<Lower actuator Tu>
The lower operating portion Tu, like the upper operating portion To, has a substantially box shape as a whole, and is symmetric with respect to a point where the horizontal groove space 10H and the vertical groove space 10V intersect. That is, an insertion slope 10S1 is formed on the upper left side of the box and a separation slope 10S2 is formed on the upper right side with the vertical groove space 10V as a boundary.

<< Inserted slope 10S1 >>
The slope 10S1 for insertion starts from the side H12 connecting the two apexes P1 and P2 at the two front corners of the front side (female housing 20 (FIG. 2) side) in the drawing, and the back side (rear portion 10W ( The triangle P1 (front side), P2 (front side), P3 (back side) as a whole becomes a point at the last point P3 while narrowing the length of the side H12 toward the corner point P3 on the surface of FIG. It is a slope. In FIG. 3, the insertion slope 10S1 is formed on the back side of the front surface of the upper working portion To, and therefore cannot be seen (the hypotenuse H23 of the triangles P1, P2, and P3 is indicated by a dotted line). The insertion slope 10S1 is not visible because it is formed on the back side of the front face of the lower operation portion Tu (the oblique side of the triangle is indicated by a dotted line).

<< Slipping slope 10S2 >>
The separation slope 10S2 starts from a side H45 connecting two points P4 and P5 at both corners of the back side (back side 10W (FIG. 2) side) in the figure, and is on the near side (female housing 20 ( The triangle P1 (back), P2 (back), and P3 (front) as a whole become points at the last point P6 while narrowing the length of the side H45 toward the corner point P6 on the surface of FIG. It is a slope. In FIG. 3, it can be seen that the separation slope 10S2 is formed of triangles P1, P2, and P3 (portions indicated by hatching) from the back side of the upper operation portion To toward the front side.

<Female housing 20>
In FIG. 1 and FIG. 2, the female housing 20 has a box shape that is housed inside the opening space of the male housing 10, and a plurality of connection terminals (shown in the figure) connected to the connection terminals of the male housing are contained therein. (Omitted). When the female housing 20 is fitted to the male housing 10, the female housing 20 has a portion corresponding to the T-shaped wrench operating portion 10T so as not to obstruct the T-shaped wrench operating portion 10T of the male housing 10. The provided opening 20K is provided on the upper and lower surfaces.
Further, a cross-shaped opening 20 </ b> C is provided in front of the female housing 20 so as to correspond to the horizontal groove space 10 </ b> H and the vertical groove space 10 </ b> V of the male housing 10. The length of the cross opening 20C is equal to or greater than the length of the T wrench 40T of the torque wrench 40 (FIG. 5), and the width of the cross opening 20C is T wrench 40T of the torque wrench 40 (FIG. 5). Is large enough to enter and exit.

<Stopper plate 30>
As shown in FIG. 1, the stopper plate 30 is formed in a rectangular plate (of course not limited to a rectangular shape) with an opening 30 </ b> C extending from one side to the center. The size of the opening 30 </ b> C is such that the shaft portion 40 </ b> C of the T-wrench 40 </ b> T of the torque wrench 40 (described later in FIG. 5) passes and is used when fitted and used when detached. 40S2 cannot pass. The stopper plate 30 is fitted in front of the projection 40S1 used when the shaft 40C of the torque wrench 40 is fitted (T-wrench 40T side) so that the T-wrench 40T is inserted into the female housing 20 when fitted. And the stopper plate 30 is fitted in front of the projection 40S2 when the shaft 40C of the torque wrench 40 is detached (on the T-shaped wrench 40T side), so that the T-wrench 40T is inserted into the female housing 20 when detached. The length to be controlled is regulated.

<Torque wrench 40>
FIG. 5 is a side view of a torque wrench 40 used in the present invention. The torque wrench 40 includes a gripping portion 40G, and a T-wrench 40T on the front face while the gripping portion 40G is gripped. The T-shaped wrench 40T is a T-shaped metal rod composed of a short shaft extending in the vertical direction at the tip of the shaft portion 40C, and a use projection 40S1 for fitting and a use projection 40S2 for separation are provided at two locations on the shaft portion 40C. It has been. The male housing 10 comes close to the female housing 20 by pushing the slope 10S1 for insertion while rotating the T-wrench 40T forward 90 degrees. Further, the male housing 10 moves away from the female housing 20 by pushing the release slope 10S2 while rotating the T-shaped wrench 40T reversely by 90 degrees.

<Procedure for mating with the low insertion force connector of the present invention>
Next, a fitting procedure using the low insertion force connector of the present invention will be described with reference to FIG.
6A and 6B are diagrams for explaining the fitting procedure of the low insertion force connector of the present invention. FIG. 6A is a front view of the state in which the male housing 10 and the female housing 20 are temporarily fitted, as viewed from the female housing side. Is a plan sectional view of the same, in which both (1) is a provisional fitting, (3) is a fitting completion, and (2) is an intermediate drawing.
(1) Temporarily fitting the female housing 20 to the male housing 10 (see FIG. 6 (1)).
(2) The opening 30C of the stopper plate 30 (FIG. 1) is inserted and fixed to the T-wrench 40T side (right side in the drawing) of the projection 40S1 used when the shaft portion 40C of the torque wrench 40 (FIG. 5) is fitted ( (See FIG. 2).
(3) Insert the T-shaped wrench 40T at the tip of the torque wrench 40 (FIG. 5) to which the stopper plate 30 is attached into the vertical opening of the cross opening 20C of the female housing 20 of FIG. 2 (see FIG. 2).
(4) When the T-wrench 40T is inserted deeply, the stopper plate 30 whose movement is restricted by the use protrusion 40S1 at the time of fitting is brought into contact with the front surface of the female housing 20, and the T-wrench 40T is inserted further. Is blocked (FIG. 6 (1)).
At this time, one end of the T-wrench 40T at the tip of the torque wrench 40 reaches the position of the side H12 (FIG. 3 (B), front side) where the slope 10S1 for insertion of the upper operating portion To of the male housing 10 starts. The other end has reached the position of the side H12 (FIG. 3 (B), front side) where the slope 10S1 for insertion of the lower operating portion Tu starts.
FIG. 7 shows this state, and the T-wrench 40T has reached the start side of the slope 10S1 for insertion of the upper operating portion To and the lower operating portion Tu.
(5) When the grip portion 40G of the torque wrench 40 is pressed from the vertical direction (12 o'clock) to the horizontal direction (3 o'clock) clockwise while pressing the female housing 20 side, the T-shaped wrench 40T at the tip Since both ends act so as to push up the insertion slope 10S1 toward the front, the male housing 10 begins to approach the female housing 20 side (FIG. 6 (2)).
(6) When the grip 40G of the torque wrench 40 is rotated to be in the horizontal direction (3 o'clock), the both ends of the T-shaped wrench 40T at the distal end reach the point P3 (back) at the distal end of the slope 10S1 for insertion. Therefore, the male housing 10 is closest to the female housing 20. In this state, the fitting of both is completed (FIG. 6 (3)).
In this way, the gripping portion 40G of the torque wrench 40 rotates the T-shaped wrench 40T at the distal end portion based on the lever principle, so that the male housing 10 and the female housing 20 can be fitted with a low force.
(7) With the torque wrench 40 in the horizontal direction, it is removed from the horizontal opening of the cross opening 20C of the female housing 20 in FIG. 2, and the fitting operation between the male housing 10 and the female housing 20 ends.

<Effect of the low insertion force connector of the present invention>
As described above, according to the present invention, there is no need for complicated spiral processing such as a screw portion required for a conventional low insertion force connector, a simple inclined surface is formed on the male connector side, and By using only a torque wrench and a stopper plate, it is possible to obtain a connector with a low insertion force that is easy to manufacture and hardly breaks down.

<Procedure for Detachment Using the Low Insertion Force Connector of the Present Invention>
Next, a procedure for detaching the low insertion force connector of the present invention will be described with reference to FIGS. 8 is a perspective view showing a state in which the low insertion force connector according to the present invention is fitted, and FIG. 9 is a perspective view showing a state in which the low insertion force connector in the fitted state is detached using a torque wrench. . 10A and 10B are diagrams for explaining a procedure for detaching the low insertion force connector of the present invention. FIG. 10A is a front view of the state in which the male housing 10 and the female housing 20 are fitted together, and FIG. It is the plane sectional view, in both figures (1) at the time of fitting, (3) at the time of fitting separation, (2) is the figure in the middle.
(1) The male housing 10 and the female housing 20 are fitted as shown in FIG. In this state, the stopper plate 30 is inserted into the stopper plate insertion hole 10 </ b> K in the upper part of the female housing 20 and stored in the female housing 20.
(2) Insert the T-shaped wrench 40T on the leading side of the torque wrench 40 (FIG. 9) into the vertical opening of the cross opening 20C of the female housing 20.
(3) When the T-shaped wrench 40T is inserted, the use projection 40S2 at the time of separation comes into contact with the stopper plate 30, and the T-shaped wrench 40T is prevented from being further inserted (FIG. 10 (1)). At this time, one end of the T-wrench 40T at the tip of the torque wrench 40 reaches the position of the side H45 (FIG. 3B, back) where the slope 10S2 for detachment of the upper operating portion To of the male housing 10 starts. The other end reaches the position of the side H45 (FIG. 3 (B), back) where the slope 10S2 for detachment of the lower operation portion Tu starts.
FIG. 7 shows this state, and the T-wrench 40T has reached the start side of the detaching slope 10S2 of the upper operating portion To and the lower operating portion Tu. The T-wrench 40T is rotated clockwise from this state during fitting, but the T-wrench 40T is rotated counterclockwise from this state when detached.
(4) When the grip 40G of the torque wrench 40 is pressed against the female housing 20 side and rotated in the counterclockwise direction from the vertical direction (12 o'clock) to the horizontal direction (9 o'clock), the tip T wrench Since both ends of 40T act so as to push the separating slope 10S2 away, the male housing 10 begins to move away from the female housing 20 side (FIG. 10 (2)).
(5) When the grip 40G of the torque wrench 40 is rotated to be in the horizontal direction (9 o'clock), both ends of the T-shaped wrench 40T at the tip end reach the point P6 (near) at the tip of the detaching slope 10S2. Therefore, the male housing 10 pushes the female housing 20 farthest away. In this state, the detachment of both has been completed (FIG. 10 (3)).
In this way, the gripping portion 40G of the torque wrench 40 rotates the T-shaped wrench 40T at the tip portion based on the lever principle, so that the fitting of the male housing 10 and the female housing 20 can be released with a low force.
(6) The torque wrench 40 is removed from the horizontal opening 20C of the cross opening 20C of the female housing 20 in FIG.

<Relationship between T-wrench 40T and cross opening 20C>
FIG. 11 is a front view of the cross opening 20C of the female housing 20 of the low insertion force connector of the present invention. As can be seen from the above description, the T-wrench 40T is inserted into the vertical opening of the cross opening 20C (the 6 o'clock to 12 o'clock opening) of the cross opening 20C both at the start of fitting and at the start of removal.
Thereafter, the T-wrench 40T is rotated 90 degrees horizontally until 3 o'clock in the fitting time, and the T-wrench 40T is turned 90 degrees horizontally in the counterclockwise direction at 9 o'clock when detached.
Then, the T-wrench 40T may be removed from the horizontal opening of the cross opening 20C (the opening at 3 o'clock to 9 o'clock in the timepiece) after completion of the fitting and after the completion of the disengagement.

<Effect of the low insertion force connector of the present invention>
As described above, according to the present invention, there is no need for complicated spiral processing such as a screw portion necessary for a conventional low insertion force connector, only a simple inclined surface is formed on the male connector side, and By using only the torque wrench and the stopper plate, it is possible to obtain a strong low insertion force connector that is hard to break.

10 male housing 10A upper part 10B bottom part 10L left side part 10R right side part 10W rear part 10T T-shaped wrench actuating part 10K stopper plate insertion hole 10H lateral groove space 10V vertical groove space 10S1 insertion slope 10S2 release slope 20 female housing 20C cross opening 20K Opening portion 30 Stopper plate 30C Opening portion 40 Torque wrench 40C Shaft portion 40G Gripping portion 40T T-shaped wrench 40S1 Protrusion used when mating 40S2 Protrusion used when disengaging To Upper operation portion Tu Lower operation portion

Claims (3)

A low insertion force connector in which the first housing and the second housing are fitted with a low insertion force using a torque wrench,
The first housing has a cross opening on the front;
When the second housing is temporarily fitted with the first housing, an insertion slope is formed on one side of a portion corresponding to the cross opening, and a separation slope opposite to the insertion slope is formed on the other side. And
With the torque wrench gripping the grip portion and the grip portion, a T-wrench is provided on the front,
When the T-shaped wrench is inserted into the cross-shaped opening and turned to the one side, the T-shaped wrench pushes the slope for insertion to bring the first housing and the second housing closer,
When the T-shaped wrench is also inserted into the cross opening and turned to the other side, the first housing and the second housing are separated by the T-shaped wrench pressing the release slope. A low insertion force connector, wherein the first housing and the second housing are fitted or detached with a low force.   2. The low insertion according to claim 1, wherein the insertion slope on one side and the release slope on the other side of the second housing are formed point-symmetrically with respect to the intersection of the cross openings. Force connector. The torque wrench includes a first protrusion and a second protrusion on the shaft portion from the grip side toward the T-shaped wrench,
A stopper plate in which an opening having a size through which the shaft portion passes and the first protrusion and the second protrusion cannot pass through is opened from one end to the center;
The insertion length of the T-wrench from the cross opening can be adjusted by engaging the stopper plate with the first protrusion during fitting and engaging the stopper plate with the second protrusion when disengaging. The low insertion force connector according to claim 1 or 2, wherein the connector has a low insertion force.

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