JP2003217726A - Connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connector having the small mounting area, and surely electrically connectable to a connecting object terminal 20. <P>SOLUTION: This connector comprises a spring connector 10 for arranging a plunger 14 in a conductive metallic tube 12 by projecting a tip part so as to be freely movable in the shaft direction, and so as not to slip out, and contractedly arranging a spring 16 for elastically energizing the plunger 14 in the projecting direction, and a conductive coil spring 24 for fitting and fixing a base end part to the outer periphery of the conductive metallic tuber 12, and arranging the free end in the almost same height in the projecting direction of the plunger 14. Both the free ends of the plunger 14 and the conductive coil spring 24 are elastically contacted with the connecting object terminal 20. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector for elastically contacting a connected terminal to obtain an electrical connection.

[0002]

2. Description of the Related Art Conventionally, for the purpose of electrical connection between an electronic equipment body and a battery which is detachable from the electronic equipment main body and electrical connection between electronic parts when assembling the electronic equipment, the contacted terminals are elastically contacted and electrically connected. Spring connectors for making connections are widely used. As shown in FIG. 16, the spring connector 10 is axially movable in the conductive metal tube 12 and is regulated so as not to come out, and the distal end portion is projected to dispose the plunger 14, and the plunger 14 is projected. A spring 16 that elastically biases in the direction is contracted. The end face of the conductive metal tube 12 on the base end side opposite to the end where the plunger 14 protrudes is appropriately fixed to the pattern of the printed circuit board 18 of the electronic device body by soldering or the like and is electrically connected. And
Electronic parts to be electrically connected to the plunger 14 and the connected terminals 20 of the battery are elastically contacted, and the spring connector 1
The printed circuit board 18 is electrically connected to the electronic component and the battery via the switch 0.

[0003]

In the above-described conventional spring connector 10, since the plunger 14 is elastically contacted with the connected terminal 20 at one point, foreign matter is attached to the position where this elastic contact is to be made. In that case, a serious problem occurs in that reliable electrical conduction cannot be obtained. Therefore,
Although it is proposed to provide an appropriate slit or a radial V groove on the tip end surface of the plunger 14 so as to elastically contact the connected terminals 20 at a plurality of points on the tip end surface of the plunger 14. However, if it is not possible to make elastic contact with the connected terminal 20 due to the presence of foreign matter even at one place, it is difficult to say that other places cannot be elastically contacted because they are far from the connected terminal 20, and a reliable electrical connection can be secured.

To improve this, as shown in FIG. 17, two spring connectors 10, 10 are connected by a holder 22 made of an insulating resin material so that one connected terminal 20 is elastically contacted. Even if one of the spring connectors 10 is not electrically connected due to the presence of foreign matter or the like, there is a high probability that the other spring connector 10 is electrically connected. However, the contact structure in which the two spring connectors 10, 10 are used in parallel has a large mounting area for the printed circuit board 18, which becomes an obstacle to downsizing of electronic devices.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a connector having a small mounting area and capable of reliable electrical connection.

[Means for Solving the Problems]

In order to achieve the above object, the connector of the present invention is provided with a plunger having a distal end portion projecting in the conductive metal tube so as to be axially movable and not to be pulled out. A spring connector in which a spring elastically biased in a protruding direction is contracted; and a conductive coil spring in which a base end portion is fitted and fixed to the outer periphery of the conductive metal tube and a free end thereof is arranged in a protruding direction of the plunger. , And for the connected terminals,
The plunger and the free end of the conductive coil spring are both elastically contacted.

A plunger is disposed in the conductive metal tube so as to be movable in the axial direction and not to come out so that the tip end is projected, and a spring for elastically biasing the plunger in the projecting direction is contracted. And a conductive rubber tubular body in which a base end portion is fitted and fixed to the outer periphery of the conductive metal tube, and a free end of the conductive rubber tube is arranged in the protruding direction of the plunger. On the other hand, both the plunger and the free end of the conductive rubber tubular body may be elastically contacted with each other.

Further, a plunger is disposed in the conductive metal tube so as to be movable in the axial direction and not to come out so that the tip end is projected, and a spring for elastically biasing the plunger in the projecting direction is contracted. And a substantially cylindrical plunger made of a conductive metal that is slidably in contact with the outer circumference of the conductive metal tube and is movably arranged in the axial direction, and the substantially cylindrical plunger projects from the plunger of the spring connector. A holder for restricting it from coming out in a direction, and a coil spring contracted in the holder so as to elastically bias the substantially cylindrical plunger in the protruding direction of the plunger of the spring connector, On the other hand, even if the plunger of the spring connector and the tip of the substantially cylindrical plunger are both elastically contacted There.

Further, a plunger is disposed in the conductive metal tube so as to be axially movable so as not to come out, and the tip end is projected, and a spring for elastically biasing the plunger in the projecting direction is contracted. And a conductive plate spring having a base end portion fixed to the outer periphery of the conductive metal tube and a tongue portion arranged in the projecting direction of the plunger. The plunger and the tongue portion of the conductive leaf spring may be elastically contacted with each other.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION A first embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a vertical sectional view of a first embodiment of the connector of the present invention. 2 is an external view of the connector shown in FIG. 1, (a) is a front view,
(B) is a plan view. 1 and 2, in FIG.
The same or equivalent members as those in No. 6 are designated by the same reference numerals, and overlapping description will be omitted.

The first embodiment of the connector of the present invention shown in FIGS. 1 and 2 differs from the conventional example shown in FIG. 16 in that a conductive metal tube 1 of a spring connector 10 is used.
The proximal end portion of the conductive coil spring 24 is fitted and fixed to the outer circumference of 2, and the free end of the conductive coil spring 24 is set in the projecting direction of the plunger 14, and the tip end of the plunger 14 and the free end side end of the conductive coil spring 24 have substantially the same height. There is something I did. The end surface of the conductive metal tube 12 on the side opposite to the side where the plunger 14 of the spring connector 10 protrudes is attached to the printed circuit board 1.
The pattern 8 is appropriately fixed by soldering or the like and electrically connected. Then, both the free ends of the plunger 14 and the conductive coil spring 24 are elastically contacted with the connected terminal 20.

In this structure, an electrical connection is formed through the plunger 14 that elastically contacts the connected terminal 20, and an electrical connection through the conductive coil spring 24 that elastically contacts the connected terminal 20 with its free end. The connected terminals 20 are reliably electrically connected to the printed circuit board 18 by the two electric paths. The base end side of the conductive coil spring 24 and the conductive metal tube 14 of the spring connector 10 are
Of course, it is electrically connected.

The first embodiment of the connector of the present invention is merely a structure in which the conductive coil spring 24 is fitted and fixed to the conventional spring connector 10 and has a large mounting like the conventional example shown in FIG. Does not require area.
Further, the number of parts is small, and the manufacturing cost can be reduced as compared with the conventional example shown in FIG.

A second embodiment of the present invention will be described with reference to FIGS. 3 and 4. FIG. 3 is a vertical sectional view of a second embodiment of the connector of the present invention. 4A and 4B are external views of the connector shown in FIG. 3, where FIG. 4A is a front view and FIG. 4B is a plan view. In FIGS. 3 and 4, members that are the same as or equivalent to those in FIGS. 1 and 2 are given the same reference numerals and redundant description is omitted.

The second embodiment of the connector of the present invention shown in FIGS. 3 and 4 differs from the first embodiment shown in FIGS. 1 and 2 in that the base of the outer circumference of the conductive metal tube 12 of the spring connector 10 is different. The holder 26 made of an insulating resin material or the like is fitted and fixed to the end side, and the base end side of the conductive coil spring 24 is fitted and fixed to the center portion or the tip end side of the outer circumference of the conductive metal tube 12. The upper surface of the holder 26 is a plane orthogonal to the axial direction of the spring connector 10, and is used as a suction surface of a component suction portion of a mounting machine device for disposing this connector at a predetermined position of the printed circuit board 18. obtain. Further, the outer circumference of the holder 26 can be used to stabilize the posture of the embossing tape that provides the connector of the present invention to the mounting machine device in the embossing.

A third embodiment of the present invention will be described with reference to FIG. FIG. 5 is a front view of a third embodiment of the connector of the present invention. In the third embodiment, one holder 28 made of an insulating resin material is connected to three connectors of the present invention, which are the spring connector 10 and the conductive coil spring 24. Of course, each connector is electrically insulated.

The third embodiment is convenient for connecting a plurality of electric paths. The number of connectors connected by one holder 28 may be set arbitrarily.

A fourth embodiment of the present invention will be described with reference to FIG. FIG. 6 is a vertical sectional view of a fourth embodiment of the connector of the present invention. The fourth embodiment differs from the second embodiment shown in FIGS. 3 and 4 in that the conductive coil spring 2 is provided above the holder 30 made of an insulating resin material or the like.
Large-diameter portion 30 having a large inner diameter into which the proximal end portion of 4 can be inserted inside
a is provided. In the fourth embodiment, even if the conductive coil spring 24 having the same size as the second embodiment is used,
The position of the upper surface of the holder 30 can be set higher than that of the second embodiment. Therefore, this holder 30
If the upper surface of is used as the suction surface of the mounting machine, the suction surface becomes higher, and thus the vertical movement of the component suction unit of the mounting machine is sufficient. Further, the large diameter portion 30a can act as an insertion guide for the conductive coil spring 24.

A fifth embodiment of the present invention will be described with reference to FIG. FIG. 7 shows a fifth embodiment of the connector of the present invention,
(A) is a longitudinal sectional view and (b) is a plan view. In the fifth embodiment, a cylindrical conductive rubber tubular body 3 is provided around the conductive metal tube 12 of the spring connector 10.
2 is fitted and fixed. The tip of the plunger 14 and the tip of the conductive rubber tubular body 32 are set to have substantially the same height. This conductive rubber tubular body 32 is a spring connector 1
Needless to say, it is elastically deformable in the axial direction of 0, is a good electric conductor, and is electrically connected to the conductive metal tube 12. Further, the tip of the conductive rubber tubular body 32 is chamfered 32a on the outer peripheral edge of the tip to facilitate elastic deformation in the axial direction.

Also in the fifth embodiment, the connected terminal 2
At 0, the plunger 14 of the spring connector and the tip of the conductive rubber tubular body 32 are elastically contacted with each other, and two-path electrical connection is obtained.

8 to 11 show modified examples of the shape of the tip of the conductive rubber tubular body 32 of the fifth embodiment of FIG. 7, respectively. 8A and 8B show a modified example in which the inner peripheral edge of the distal end of the conductive rubber tubular body 32 is chamfered 32b. FIG. 8A is a vertical sectional partial view, and FIG. 8B is a plan view. FIG. 9 shows a modified example in which a chamfer 32b is formed on the inner peripheral edge of the tip of the conductive rubber tubular body 32, two tip cutouts 32c, 32c are provided, and two protrusions are provided at the tip. Is a partial view of a longitudinal section, and (b) is a plan view. In FIG. 10, a chamfer 32b is formed on the inner peripheral edge of the tip of the conductive rubber tubular body 32, and a large tip cutout portion 32c is provided so that the tip 1
It is a modification which provided two protrusion parts, (a) is a longitudinal cross-sectional partial view, (b) is a top view. FIG. 11 shows a concentric triangular ridge 32 on the tip surface of the conductive rubber tubular body 32.
It is a modification which provided d, (a) is a longitudinal cross-sectional partial view, (b) is a top view.

A sixth embodiment of the present invention will be described with reference to FIG. 12A and 12B show a sixth embodiment of the connector of the present invention, wherein FIG. 12A is a vertical sectional view and FIG. 12B is a plan view.
In the sixth embodiment, a substantially cylindrical plunger 34 made of a conductive metal that is slidably in contact with the outer periphery of the conductive metal tube 12 of the spring connector 10 and is movable in the axial direction is provided, and the protruding direction of the plunger 14 is the same. In addition, a holder 36 is provided to prevent the substantially cylindrical plunger 34 from coming off. The holder 36 is made of an insulating resin material or the like,
The spring connector 10 is fixed to the outer circumference of a mount for soldering to the printed circuit board 18 on the base end side by press fitting or the like. Further, a coil spring 38 that elastically biases the substantially cylindrical plunger 34 in the projecting direction of the plunger 14 is contracted in the gap between the holder 36 and the conductive metal tube 12. The tip of the substantially cylindrical plunger 34 and the tip of the plunger 14 have substantially the same height. The substantially cylindrical plunger 34 and the conductive metal tube 14 are of course electrically connected by sliding contact.

In this sixth embodiment, the substantially cylindrical plunger 3
The electric path formed through 4 can have a smaller resistance and smaller inductive component than the electric path formed through the conductive coil spring 24 as in the first embodiment.
It is suitable for electrical connection of high frequency circuits.

13 and 14 show modified examples of the substantially cylindrical plunger in the sixth embodiment of FIG. 12, respectively. FIG. 13 shows a modified example in which two protrusions 34a, 34a are provided at the tip of the substantially cylindrical plunger 34. (a) is a front partial view, (b) is a side partial view, (c). Is a plan view. FIG. 14 shows a modified example in which the cross-sectional shape of the substantially cylindrical plunger 34 orthogonal to the axial direction is C-shaped having an opening 34b, and one protrusion 34a is provided at the tip end, and (a) is a vertical cross-sectional view. (B) is a left side view, (c) is a right side view, and (d) is a plan view.

A seventh embodiment of the present invention will be described with reference to FIG. FIG. 15 is an external view of a seventh embodiment of the connector of the present invention, (a) is a front view, (b) is a right side view, and (c) is a plan view. In the seventh embodiment, the conductive metal tube 12 of the spring connector 10 is used.
A holder 40 made of an insulating resin material is press-fitted and fixed to the base end side, and a conductive leaf spring 42 is further press-fitted and fixed to the conductive metal tube 12 through a hole provided on the base end side and electrically connected. The free end side of the conductive leaf spring 42 has a forked end portion and is appropriately bent to form tongue pieces 42a, 42a on both sides of the plunger 14 of the spring connector 10 in the protruding direction. It The plunger 14 and the tongue pieces 42a, 42a have substantially the same height.
Of course, the tongue pieces 42a, 42a can be elastically displaced in the axial direction.

Also in the seventh embodiment, the plunger 14 of the spring connector 10 and the conductive leaf spring 42 make electrical connection with each other. The structure of fixing the base end side of the conductive leaf spring 42 to the outer periphery of the conductive metal tube 12 and electrically connecting the conductive metal spring 12 is not limited to that shown in FIG. The tube 12 may be elastically wound around the outer circumference of the tube 12 and fixed and electrically connected by hugging the tube 12, or further fixed and electrically connected by soldering.

In each of the above embodiments, the base end side is fixed to the printed circuit board 18, and the connected terminal 20 is attached to the front end side.
Shows the structure of a connector which is elastically contacted and electrically connected, but the invention is not limited to this, and a conductive type coil spring or a conductive rubber cylindrical body is appropriately provided on both ends of a spring connector with movable ends. May be

[0028]

Since the connector of the present invention is constructed as described above, the following special effects are obtained.

In the connector according to the first aspect of the present invention, the conductive coil spring and the plunger of the spring connector both elastically contact the connected terminal, so that a more reliable electrical connection can be obtained. Moreover, compared to the conventional structure in which a plurality of spring connectors are used in parallel to ensure the reliability of electrical connection,
The connector of the present invention has a small mounting area and a small number of parts and can be manufactured at low cost.

In the connector according to the second aspect, the conductive rubber tubular body and the plunger of the spring connector are elastically contacted with the terminal to be connected, so that a reliable electrical connection can be obtained similarly to the connector of the first aspect. . Then, the tip of the conductive rubber tubular body can be formed into an appropriate arbitrary shape to surely make elastic contact with the connected terminal.

In the connector of the third aspect, the substantially cylindrical plunger and the plunger of the spring connector both make elastic contact with the connected terminal, and similar to the connectors of the first and second aspects, a reliable electrical connection is achieved. can get. Moreover, the resistance and inductance components of the electric path passing through the substantially cylindrical plunger can be reduced, which is suitable for a high frequency circuit.

In the connector according to the fourth aspect, the tongue piece of the conductive leaf spring and the plunger of the spring connector both elastically contact the terminal to be connected, so that the reliable electrical connection is achieved as in the connector of the other claims. Connection is obtained.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a connector according to a first embodiment of the present invention.

FIG. 2 is an external view of the connector shown in FIG. 1, where (a) is a front view and (b) is a plan view.

FIG. 3 is a vertical cross-sectional view of a second embodiment of the connector of the present invention.

FIG. 4 is an external view of the connector shown in FIG. 3, in which (a) is a front view and (b) is a plan view.

FIG. 5 is a front view of a third embodiment of the connector of the present invention.

FIG. 6 is a vertical sectional view of a fourth embodiment of the connector of the present invention.

FIG. 7 shows a fifth embodiment of the connector of the present invention, (a)
Is a longitudinal sectional view, and (b) is a plan view.

FIG. 8 is a modification in which the inner peripheral edge of the distal end of the conductive rubber tubular body is chamfered, (a) is a vertical cross-sectional partial view,
(B) is a plan view.

FIG. 9 is a modified example in which the inner peripheral edge of the tip of the conductive rubber tubular body is chamfered, two tip cutouts are provided, and two projections are provided at the tip, and FIG. And (b) is a plan view.

FIG. 10 is a modified example in which a conductive rubber tubular body is chamfered on the inner peripheral edge of the distal end thereof and is provided with a large distal end cutout portion to provide one protruding portion at the distal end. Yes, (b) is a plan view.

FIG. 11 is a modified example in which a ridge having a triangular cross section is concentrically provided on the tip end surface of a conductive rubber tubular body, (a) is a vertical cross-sectional partial view, and (b) is a plan view.

FIG. 12 shows a sixth embodiment of the connector of the present invention,
(A) is a longitudinal sectional view and (b) is a plan view.

FIG. 13 is a modified example in which two protrusions are provided at the tip of a substantially cylindrical plunger, and (a) is a front partial view (b).
Is a partial side view and (c) is a plan view.

FIG. 14 is a modification in which the cross-sectional shape of the substantially cylindrical plunger orthogonal to the axial direction is C-shaped with an opening, and one protrusion is provided at the tip end, and (a) is a vertical cross-sectional view. (B)
Is a left side view, (c) is a right side view, and (d) is a plan view.

FIG. 15 is an external view of a seventh embodiment of the connector of the present invention, (a) is a front view, (b) is a right side view,
(C) is a plan view.

FIG. 16 is a vertical sectional view of an example of a spring connector.

FIG. 17 is a diagram showing a contact structure for elastically contacting one connected terminal by using two conventional spring connectors in parallel to obtain a reliable electrical connection.

[Explanation of symbols]

10 Spring connector 12 Conductive metal tube 14 Plunger 16 springs 18 printed circuit board 20 Connected terminal 22,26,28,30,36,40 Holder 24 Conductive coil spring 32 Conductive rubber tubular body 34 Substantially cylindrical plunger 38 coil spring 42 Conductive leaf spring 42a tongue piece

Claims (4)

[Claims] 1. A conductive metal tube is provided with a plunger having a distal end protruding so as to be movable in the axial direction and not to slip out, and a spring for elastically biasing the plunger in the protruding direction is contracted. And a conductive coil spring having a base end portion fitted and fixed to the outer periphery of the conductive metal tube and having its free end arranged in the protruding direction of the plunger. A connector characterized in that the plunger and the free end of the conductive coil spring are in elastic contact with each other. 2. A conductive metal tube is provided with a plunger having a distal end protruding so as to be movable in the axial direction and not coming off, and a spring for elastically biasing the plunger in the protruding direction is contracted. And a conductive rubber tubular body in which a base end portion is fitted and fixed to the outer periphery of the conductive metal tube, and a free end of the conductive rubber tube is arranged in the protruding direction of the plunger. On the other hand, the connector is characterized in that the plunger and the free end of the conductive rubber tubular body are both elastically contacted. 3. A conductive metal tube is provided with a plunger having a distal end projecting so as to be movable in the axial direction and not to slip out, and a spring for elastically biasing the plunger in the projecting direction is contracted. And a substantially cylindrical plunger made of a conductive metal that is slidably in contact with the outer circumference of the conductive metal tube and is movably arranged in the axial direction, and the substantially cylindrical plunger projects from the plunger of the spring connector. A holder that regulates the stopper so that it does not slip out in a direction, and a coil spring that is contracted in the holder so as to elastically bias the substantially cylindrical plunger in the protruding direction of the plunger of the spring connector,
A connector characterized in that the plunger of the spring connector and the tip of the substantially cylindrical plunger both elastically contact the connected terminal. 4. A conductive metal tube is provided with a plunger having a distal end protruding so as to be movable in the axial direction and not coming off, and a spring for elastically biasing the plunger in the protruding direction is contracted. And a conductive plate spring having a base end portion fixed to the outer periphery of the conductive metal tube and a tongue portion arranged in the projecting direction of the plunger. A connector characterized in that the plunger and the tongue portion of the conductive leaf spring are in elastic contact with each other.