KR102143973B1 - Connector - Google Patents

Abstract

[Task] Provide a connector that can stably maintain the holding force of a thinned object to be connected even in a low-profile state.
[Solving means] The connector 10 according to the present invention includes an insertion groove 21 capable of inserting and removing a connection object 60 having an engaging portion 63 protruding from the side edge portion, and the connection object 60 When inserted into the insertion groove 21, the insulator 20 having the engaging portion 63 and the holding portion 27 engaged, the closed position for pressing the connection object 60, and the connection object 60 are not pressed. The actuator 50 is provided with an actuator 50 that is movable with respect to the insulator 20 between the unopened position and the actuator 50 is a protrusion 56 that abuts against the engaging portion 63 of the connection object 60 in the closed position. ).

Description

Connector {CONNECTOR}

The present invention relates to a connector for electrically connecting circuit boards.

Conventionally, a connector for an FPC (Flexible Printed Circuit Board) or a connector for an FFC (Flexible Flat Cable), which is used in electronic devices, etc., has a holding force (removal force) so that the mated FPC or FFC and the connector do not come off inadvertently. It is required to increase the 拔去力)).

For example, in the connector described in Patent Document 1, positioning locking plates provided on both side edges of the terminal portion of the FPC engage with a lock plate protruding from the insulating housing.

Japanese Patent Publication No. 2016-129124

In the connector described in Patent Document 1, studies such as increasing the engagement margin between the insulator and the FPC or FFC have been conducted in order to obtain the holding force of the FPC or FFC. However, in the present time when the size of the connector is remarkably reduced and the size of the connector is remarkable, it is becoming difficult to secure a sufficient locking margin. In addition, the connection object itself, such as FPC or FFC, is also undergoing thinning, and the rigidity of the part to be engaged with the insulator is lowered, resulting in a problem that it is liable to bend, and the jamming margin is not stable, that is, the holding power decreases. .

An object of the present invention, made in view of such a viewpoint, is to provide a connector capable of stably maintaining the holding force of a thinned connection object even in a low-profile state.

In order to solve the above problem, the connector related to the first aspect,

An insertion groove capable of inserting and removing a connection object having an engaging portion protruding from the side edge;

A leg portion engaged with the engaging portion when the object to be connected is inserted into the insertion groove

And an insulator having

Actuator capable of movable with respect to the insulator between a closed position for pressing the connection object and an open position for not pressing the connection object

And,

The actuator, in the closed position, has a protrusion that abuts against the engaging portion of the connection object.

In the connector related to the second aspect,

In the closed position, the protrusion pushes down the engaging portion of the connection object in the closing direction of the actuator.

In the connector related to the third aspect,

The insulator has a through hole or a recess capable of accommodating the engaging portion at a position corresponding to the engaging portion when the object to be connected is inserted into the insertion groove, on a side in the closing direction of the actuator than the mounting surface of the object to be connected.

In the connector related to the fourth aspect,

In the state in which the actuator is in the open position, when the upper surface of the engaging portion and the upper surface of the legging portion are disposed at approximately the same vertical position,

In the closed position, the tip of the protrusion is positioned on a side in the closing direction than on the upper surface of the leg portion.

In the connector related to the fifth aspect,

The protrusion has a tapered shape toward the closing direction side when viewed in a cross section along the longitudinal direction of the actuator.

Advantageous Effects of Invention According to the present invention, it is possible to provide a connector capable of stably maintaining the holding force of a thinned object to be connected even in a low profile state.

1 is a perspective view showing a connector and an FPC according to an embodiment in a separated state in a top view.
Fig. 2 is a perspective view showing the connector of Fig. 1 and the FPC in a separated state shown by a lower surface.
3 is an exploded perspective view showing the connector of FIG. 1 viewed from the top.
4 is an exploded perspective view showing the connector of FIG. 1 when viewed from the bottom.
5 is a cross-sectional view of the connector taken along the line V-V in FIG. 1.
6 is a cross-sectional view of the connector taken along an arrow line VI-VI in FIG. 1.
Fig. 7 is a cross-sectional view corresponding to Fig. 5 when the actuator is rotated to a closed position with the FPC inserted.
Fig. 8 is a cross-sectional view corresponding to Fig. 6 when the actuator is in the open position with the FPC inserted.
Fig. 9 is a view corresponding to an enlarged cross-sectional view taken along an arrow line IX-IX in Fig. 1 when the actuator is in an open position with the FPC inserted.
Fig. 10 is a cross-sectional view corresponding to Fig. 8 when the actuator is rotated to the closed position with the FPC inserted.
Fig. 11 is an enlarged cross-sectional view corresponding to Fig. 9 when the actuator is rotated to a closed position in a state in which the FPC is inserted.
12 is a diagram showing a cross section corresponding to FIG. 6 of a connector according to a modification example.

Hereinafter, one embodiment will be described in detail with reference to the accompanying drawings. In the following description, the front and rear, left and right directions and up and down directions are based on the directions of arrows in the drawings.

The connector 10 according to the embodiment is described as being connected to the FPC 60 (connection object) which is a flexible printed circuit board as an example, but is not limited thereto. The connector 10 may be any connector as long as it is a connector that electrically connects circuit boards to each other through metal contacts attached to the insulator. For example, the connector 10 may be connected to the FFC instead of the FPC.

Fig. 1 is a perspective view showing a connector 10 and an FPC 60 according to an embodiment in a separated state in a top view. Fig. 2 is a perspective view of the connector 10 and the FPC 60 of Fig. 1 in a separated state shown by a lower surface. 3 is an exploded perspective view showing the connector 10 of FIG. 1 viewed from the top. FIG. 4 is an exploded perspective view showing the connector 10 of FIG. 1 when viewed from the bottom. 5 is a cross-sectional view of the connector 10 taken along the line V-V in FIG. 1. FIG. 6 is a cross-sectional view of the connector 10 taken along the VI-VI arrow line of FIG. 1. 7 is a cross-sectional view corresponding to FIG. 5 when the actuator 50 is rotated to the closed position in the state in which the FPC 60 is inserted.

As shown in FIG. 3, the connector 10 of the present embodiment includes an insulator 20, a contact 30, a fixing bracket 40, and an actuator 50 as large components. As shown in Fig. 1, the connector 10 is mounted on a circuit board CB. The connector 10 electrically connects the FPC 60 and the circuit board CB via a contact 30.

The insulator 20 is injection-molded of an insulating and heat-resistant synthetic resin material. In the front of the upper surface of the insulator 20, an insertion groove 21 for inserting the FPC 60 is concave. The front and front upper surfaces of the insertion groove 21 are open. The rear portion of the insertion groove 21 extends to the inside of the insulator 20 (see Fig. 5). The bottom surface of the rear portion of the insertion groove 21 constitutes the mounting surface 21a on which the FPC 60, in particular, the bottom surface of the tip end thereof is mounted. On the rear surface of the insulator 20, a plurality of mounting grooves 22 extending in the front-rear direction are formed (see FIG. 4). The plurality of mounting grooves 22 are formed so as to be spaced apart from each other at predetermined intervals and arranged in the horizontal direction. The surface shape of the mounting groove 22 along the rear surface of the insulator 20 is a substantially rectangular shape having a long side in the vertical direction and a short side in the left and right direction. The length of the long side and the short side of the mounting groove 22 are greater than the vertical width and the left and right widths of the rear surfaces of the corresponding contacts 30 so that the contact 30 can be press-fitted into the mounting groove 22 and fixed as described later. Slightly larger. The rear portion of each mounting groove 22 penetrates the rear portion of the insulator 20 in the front-rear direction. All of each of the mounting grooves 22 are recessed in the bottom surface of the insertion groove 21. A bottom wall 23 is formed at the lower end of the insulator 20 so as to be continuous with the bottom surface of the mounting groove 22 downward. That is, when the connector 10 is mounted on the circuit board CB, the bottom wall 23 is located between the bottom surface of the mounting groove 22 and the circuit board CB.

A pair of sidewalls 24 are formed on both left and right sides of the insulator 20. Closed position holding protrusions 25 are protruded above the front ends of the inner side surfaces of the left and right side walls 24. In the vicinity of both left and right side portions of the insulator 20, bracket fixing grooves 26 are formed which are located directly inside the left and right side walls 24 and extend in the front-rear direction. The front of the bracket fixing groove 26 is open. The upper and lower surfaces of the entire bracket fixing groove 26 are also open. Both the upper and lower sides and the left and right sides of the rear portion of the bracket fixing groove 26 are blocked by the insulator 20. The rear end of the bracket fixing groove 26 reaches the rear end surface of the insulator 20 (see Fig. 4).

Legging portions 27 are formed upwardly at the front end of the portion located inside the bracket fixing groove 26 (see Fig. 3). The front surface 27a and the rear surface 27b of the foot portion 27 are constituted by a plane orthogonal to the front-rear direction. The upper surface 27c of the leg portion 27 is constituted by a plane parallel to the front-rear direction. The leg portions 27 are formed at both left and right ends of the insulator 20, respectively. A through hole 28 which penetrates the insulator 20 in the vertical direction is formed in the rear of the leg portion 27 adjacent to the leg portion 27. The through hole 28 accommodates the engaging portion 63 of the FPC 60 to be described later. The shape and size of the through hole 28 may be any shape and size as long as it can accommodate the engaging portion 63.

The plurality of contacts 30 is a copper alloy with spring elasticity (for example, phosphor bronze, beryllium copper, or titanium copper) or a thin plate of a Colson-based copper alloy using a forward mold (stamping) It is molded and processed (see Fig. 5). In the contact 30, a base plating serving as a base is formed on its surface, and a surface layer plating is laminated on a part of the upper surface of the base plating.

As shown in FIG. 5, the contact 30 is substantially U shape when viewed from the side. The contact 30 has a contact arm 31 having a contact protrusion 32 at a tip end, an arm support 33 supporting the contact arm 31, and is located directly above the contact arm 31 and near the tip of the lower surface. It has a pressing arm (34) having a supporting recess (35) in the. The contact 30 has a mounting portion 36 protruding from the rear end. As described later, the mounting portion 36 of the contact 30 is connected to the circuit pattern on the circuit board CB by soldering.

Each contact 30 is supported by the insulator 20 by being attached to each mounting groove 22. That is, each contact 30 is press-fitted from the rear to each mounting groove 22 of the insulator 20. When each contact 30 is pressed into the mounting groove 22 as shown in FIG. 5, the arm support 33 is supported on the upper surface of the bottom wall 23 of the insulator 20. The contact arm 31 (contact protrusion 32) is located in the insertion groove 21. The locking projection 37 protruding from the upper surface of the pressing arm 34 enters the upper surface of the corresponding mounting groove 22 (see Fig. 5). As described above, the contact 30 is in a fixed state with respect to the mounting groove 22. When the contact 30 is in a fixed state with respect to the mounting groove 22, the surface of the contact 30 approaches or abuts against the inner surface of the mounting groove 22. The mounting portion 36 protrudes rearward from the rear surface of the insulator 20. The lower surface of the mounting portion 36 is located below the lower surface of the insulator 20.

The left and right pair of fixing brackets 40 are press-formed products of a metal plate, and are attached to both left and right ends of the insulator 20 (see Fig. 3). On the upper surface of the fixing bracket 40, a support portion 41 for supporting the actuator 50 is formed. At the lower end of the fixing bracket 40, a substantially L-shaped mounting portion 42 is protruded toward the side, that is, outward in the left-right direction. The fixing bracket 40 is fixed to the insulator 20 by pressing it into the insulator 20 from the front.

The rotary actuator 50, which is a plate-shaped member extending in the left-right direction, is injection-molded of a heat-resistant synthetic resin material using a metal molding. Side arms 51 are installed on both left and right sides, respectively. In the vicinity of the lower end of the actuator 50, a plurality of arm insertion through holes 52 penetrating the actuator 50 in the plate thickness direction are formed in a horizontal direction. Immediately below each arm insertion through hole 52, a rotational central shaft 53 is formed that blocks the lower end of each arm insertion through hole 52 (see Fig. 5). A cam portion 54 is provided at a lower end of a portion positioned between predetermined neighboring arm insertion through holes 52 (see Figs. 4 and 5). At the tip end of the side arm 51 of the actuator 50, a closed position retaining protrusion 55 is provided to protrude outward (see Fig. 3). Inside the side arm 51, a protrusion 56 is provided to protrude from the inner surface of the actuator 50.

1 and 3, in a state where the actuator 50 is substantially perpendicular to the insulator 20, the pressing arm 34 of the corresponding contact 30 is inserted into the through hole 52 for each arm insertion passage. Is inserted. The support recess 35 engages the rotational central axis 53 (see Fig. 5). The base end portions of the left and right side arms 51 are mounted on the support portions 41 of the left and right fixing brackets 40. As described above, the actuator 50 is supported with respect to the contact 30 and the fixing bracket 40.

When the proximal end of the side arm 51 is supported by the support part 41 in this way, the engagement relationship between the support recess 35 of each contact 30 and the corresponding rotational center shaft 53 is maintained. Accordingly, the actuator 50 is movable with respect to the insulator 20 (the direction in which the FPC 60 is inserted and removed). In particular, the actuator 50 is rotatable around the rotational central axis 53.

The connector 10 is mounted on an upper surface (circuit formation surface) of a circuit board CB (refer to the virtual line in Fig. 1) substantially parallel to the front-rear direction. Specifically, the mounting portion 36 of each contact 30 is mounted on a solder paste applied to a circuit pattern (not shown) on the circuit board CB. The mounting portions 42 of the left and right fixing brackets 40 are mounted on a solder paste applied to a ground pattern (not shown) on the circuit board CB. By heating and melting each solder paste in a reflow furnace or the like, each mounting portion 36 is soldered to the circuit pattern. Each mounting portion 42 is soldered to the ground pattern. As a result, mounting of the connector 10 to the circuit board CB is completed.

As shown in Figs. 1 and 2, the FPC 60 is a laminated structure constituted by bonding a plurality of thin film materials to each other. The FPC 60 constitutes a distal end portion in the extension direction (front-rear direction) and is harder than other portions, and extends linearly along the extension direction and extends to the lower surface of the end reinforcement member 61 A plurality of circuit patterns 62 are provided, and an engaging portion 63 protruding outwardly from a side edge portion at a tip portion in the extending direction. A pair of engaging portions 63 is formed so as to protrude in a direction orthogonal to the extending direction, that is, in a left-right direction. The upper surface 63a of the engaging portion 63 is formed continuously so as to be positioned on the same plane as the upper surface of the end reinforcing member 61.

In order to connect the FPC 60 (to be connected), the actuator 50 is rotated to the open position. After rotating the actuator 50 to the open position, the rear end of the FPC 60 is inserted into the insertion groove 21 at an angle from above. When the actuator 50 is rotated forward to the closed position, the surface of the side arm 51 on the side of the fixing bracket 40 comes into contact with the support part 41. The closed position retaining protrusion 55 of the actuator 50 engages with the closed position retaining protrusion 25 of the insulator 20. Thereby, the actuator 50 is held in the closed position with respect to the insulator 20. At this time, each cam portion 54 of the actuator 50 makes surface contact with the upper surface of the FPC 60 and presses the FPC 60 downward. Accordingly, the circuit pattern 62 of the FPC 60 reliably contacts the contact protrusion 32 while elastically deforming the contact arm 31 of each contact 30 downward (see Fig. 7).

With respect to the state of engagement between the connector 10 and the FPC 60 in a state in which the FPC 60 is inserted and the actuator 50 is rotated from the open position to the closed position, see Figs. 8 to 11. It will be described in detail. Fig. 8 is a cross-sectional view corresponding to Fig. 6 when the actuator 50 is in the open position with the FPC 60 inserted. FIG. 9 is a view corresponding to an enlarged cross-sectional view taken along an arrow line IX-IX of FIG. 1 when the actuator 50 is in an open position in a state in which the FPC 60 is inserted. Fig. 10 is a cross-sectional view corresponding to Fig. 8 when the actuator 50 is rotated to the closed position with the FPC 60 inserted. Fig. 11 is an enlarged cross-sectional view corresponding to Fig. 9 when the actuator 50 is rotated to the closed position with the FPC 60 inserted.

When the FPC 60 is inserted into the insertion groove 21 of the insulator 20, the engaging portions 63 of the FPC 60 are respectively accommodated in the through holes 28 formed at the corresponding positions of the insulator 20. (See Fig. 8). The through hole 28 can accommodate the engaging portion 63 on the side in the closing direction than the mounting surface 21a of the FPC 60. In this state, the holding portion 27 of the insulator 20 faces the engaging portion 63 from the side in the extraction direction of the FPC 60, that is, the front side. The foot portion 27 engages with the engaging portion 63. In a state in which the actuator 50 is in the open position, the upper surface 63a of the engaging portion 63 and the upper surface 27c of the leg portion 27 are disposed at substantially the same vertical position.

When the actuator 50 is rotated to the closed position, the protrusion 56 of the actuator 50 abuts the engaging portion 63 of the FPC 60. In particular, the protrusion 56 pushes down the engaging portion 63 in the closing direction of the actuator 50 in the closed position of the actuator 50 (see FIGS. 10 and 11 ). That is, the protrusion 56 is formed corresponding to the insertion position of the engaging portion 63 of the FPC 60 inserted into the insertion groove 21 of the insulator 20. As shown in FIG. 11, the cross-sectional shape along the left-right direction of the protrusion 56 becomes a tapered shape toward the closing direction side, that is, downward. In particular, the cross-sectional shape of the protrusion 56 is substantially trapezoidal. The tip end of the protrusion 56, that is, the lowermost part, is located on the closing direction side (lower) than the upper surface 27c of the leg portion 27 in the closed position. That is, as shown in FIG. 10, in the closed position, the lowermost portion of the protrusion 56 is accommodated in the through hole 28.

In the state in which the actuator 50 is in the closed position, the upper surface 63a of the engaging portion 63 is pressed by the protruding portion 56 in the closing direction, so that it is lower than the upper surface 27c of the foot portion 27. Is located (see Figs. 10 and 11). The engaging portion 63 is bent by pressing down in the closing direction by the protruding portion 56, and is spaced downward from the upper surface 27c of the leg portion 27 toward the outside.

The connector 10 according to the embodiment as described above can stably maintain the holding force of the thinned FPC 60 even in a low-magnification state. That is, even in the case where the rigidity of the engagement portion 63 decreases as the FPC 60 becomes thinner, and becomes easy to bend, the engagement margin is stable due to the abutment between the protrusion portion 56 and the engagement portion 63. The engaging portion 63 is bent downward by pressing down the engaging portion 63 by the protrusion 56 in the closing direction. As a result, the engagement margin between the engaging portion 63 and the foot portion 27 increases. In this way, the connector 10 can obtain a high holding force as compared to the case where the FPC 60 is mounted flat on the mounting surface 21a including the engaging portion 63.

In the connector 10, since the through hole 28 is provided below the insulator 20 to increase the engagement margin, it is necessary to increase the amount of protrusion from the bottom wall 23 of the leg portion 27. none. Accordingly, when the FPC 60 is inserted, the connector 10 prevents contact between the FPC 60 and the leg portion 27, thereby maintaining the insertability of the FPC 60.

When the FPC 60 is inserted, the lowermost portion of the protrusion 56 is closed when the upper surface 63a of the engaging portion 63 and the upper surface 27c of the foot portion 27 are disposed at substantially the same vertical position. In the position, it is located in the closing direction side than the upper surface 27c of the foot part 27. Thereby, the protrusion part 56 reliably warps the engaging part 63 in the closed position. Accordingly, the connector 10 can secure the engagement margin between the engaging portion 63 and the foot portion 27 without unnecessarily increasing the amount of protrusion of the foot portion 27 from the bottom wall 23. Thereby, the connector 10 can maintain the holding force.

It is clear to those skilled in the art that the present invention can be realized in a predetermined form other than the above-described embodiment without departing from its spirit or its essential characteristics. Therefore, the preceding description is illustrative and is not limited thereto. The scope of the invention is not defined by the preceding description, but by the appended claims. Among all the changes, some of the changes within the equivalent range shall be included among them.

For example, as illustrated in FIG. 11, the cross-sectional shape of the protrusion 56 along the length direction of the actuator 50 has been described as being tapered, particularly substantially trapezoidal, but is not limited thereto. The cross-sectional shape of the protrusion 56 may be any shape as long as it is a shape capable of pressing down the engaging portion 63 of the FPC 60 in the closing direction, such as a rectangle or a semicircle. In addition, the protrusion 56 may have a tapered cross section other than a substantially trapezoidal shape. For example, the protrusion 56 may have a cross-sectional shape that increases as the amount of pressing the engaging portion 63 in the closing direction increases toward the outside. As an example, the cross-sectional shape of the protrusion 56 may be a triangle having a linear inclined surface on the closing direction side so that the installation amount protruding from the inner surface of the actuator 50 increases toward the outer side in the left and right direction. With such a cross-sectional shape of the protrusion 56, the protrusion 56 presses the engaging portion 63 substantially uniformly from the inside to the outside in a cross section in the left and right direction. Accordingly, the connector 10 can bend the engaging portion 63 more naturally without applying extreme pressure to a part of the engaging portion 63.

12 is a diagram illustrating a cross section corresponding to FIG. 6 of a connector 10 according to a modification example. The connector 10 has been described as having the through hole 28 of the insulator 20 at a position corresponding to the protrusion 56 of the actuator 50 in the closed position, but is not limited thereto. As shown in FIG. 12, the connector 10 may have a concave portion 29 instead of the through hole 28. The shape and size of the concave portion 29 may be any shape and size as long as the engaging portion 63 can be accommodated. The concave portion 29 may be concave to an arbitrary depth as long as it is possible to press-fit in the closing direction of the engaging portion 63 by the protrusion portion 56.

The connector 10 may have neither the through hole 28 nor the concave portion 29 and may be configured so that the insulator 20 is not formed outside the engaging portion 63. For example, the side wall 24 and the bracket fixing groove 26 of the insulator 20 are omitted, so that the insulator 20 does not need to be formed at a position corresponding to the component. That is, the insulator 20 may be formed so that only the leg portion 27 of the insulator 20 exists outside the side edge portion of the FPC 60.

Although the lowermost portion of the protrusion 56 has been described as being positioned in the closing direction rather than the upper surface 27c of the foot portion 27 in the closed position, the present invention is not limited thereto. The lowermost portion of the protrusion 56 may be disposed at an arbitrary position as long as it is possible to secure a margin of engagement with the leg portion 27 by pressing down the engagement portion 63. For example, the lowermost part of the protrusion 56 may be located at substantially the same height as the upper surface 27c of the leg portion 27 in the closed position. In this case, the protrusion portion 56 is a state in which the FPC 60 is inserted and the actuator 50 is in the open position, the engagement portion 63 positioned slightly above the upper surface 27c of the foot portion 27 It is configured to press down the upper surface (63a).

The foot portion 27 of the insulator 20 is described as being formed in a substantially rectangular parallelepiped shape by a front surface 27a and a rear surface 27b perpendicular to the front-rear direction, and an upper surface 27c parallel to the front-rear direction. However, it is not limited thereto. The foot portion 27 may have a front inclined surface continuously formed from the upper edge of the front surface 27a and a rear inclined surface formed continuously from the upper edge of the rear surface 27b. The front inclined surface is an inclined surface that gradually goes upward as it goes from the front to the rear. The rear inclined surface is an inclined surface that gradually goes upward as it goes from the rear to the front.

10: connector
20: insulator
21: insertion groove
21a: mounting surface
22: mounting groove
23: floor wall
24: side wall
25: closed position pussy protrusion
26: bracket fixing groove
27: foot branch
27a: front
27b: rear
27c: top surface
28: through hole
29: recess
30: contact
31: contact arm
32: contact protrusion
33: arm support
34: push arm
35: support recess
36: mounting part
37: protrusion
40: fixing bracket
41: support
42: mounting unit
50: actuator
51: side arm
52: through hole for arm insertion through
53: rotation center axis
54: cam part
55: closed position pussy protrusion
56: protrusion
60: FPC (connection object)
61: end reinforcement member
62: circuit pattern
63: engaging portion
63a: upper surface
CB: circuit board

Claims (5)

An insertion groove capable of inserting and removing a connection object having an engaging portion protruding from the side edge;
A holding portion that engages with the engagement portion when the connection object is inserted into the insertion groove
And an insulator having
Actuator movable with respect to the insulator between a closed position for pressing the connection object and an open position for not pressing the connection object
And,
The actuator, in the closed position, has a protrusion that abuts the first surface of the engaging portion of the connection object,
The protrusion of the actuator is located on the operation side of the actuator than the rotation center of the rotation shaft,
A connector, wherein a second surface of the engaging portion opposite to the first surface does not contact the insulator when the actuator is in the closed position. The method of claim 1,
The protrusion, in the closed position, pushes down the engagement portion of the connection object in the closing direction of the actuator. The method according to claim 1 or 2,
The insulator, when the connection object is inserted into the insertion groove, has a through hole or a recess capable of accommodating the engaging portion at a position corresponding to the engaging portion on a side of the closing direction of the actuator than the mounting surface of the connection object, connector. The method of claim 2,
In a state in which the actuator is in the open position, when the upper surface of the engaging portion and the upper surface of the gripping portion are disposed at substantially the same vertical position,
The connector, wherein the tip of the protrusion is positioned on a side in the closing direction than on the upper surface of the holding portion in the closed position. The method according to any one of claims 1, 2 and 4,
The connector, wherein the protrusion has a tapered shape toward a closing direction side of the actuator in a cross section along the longitudinal direction of the actuator.

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