This application is based upon and claims the benefit of priority from Japanese patent application No. 2006-311386, filed on Nov. 17, 2006, the disclosure of which is incorporated herein in its entirety by reference.
This invention relates to a connector for connecting a connection object, such as a fluorescent tube, to another connection object, such as a board.
For example, Japanese Unexamined Utility Model Application (JP-U) No. H7-30482 discloses a fluorescent tube apparatus using a compact fluorescent tube as a connection object. The compact fluorescent tube comprises a tubular sealed member having an inner diameter not greater than 10 mm and a pair of lead rods penetrating the sealed member at opposite ends thereof and extending from the inside to the outside of the sealed member. Each of the lead rod has an inner part inside the sealed member and an outer part outside the sealed member. The inner part of the lead rod is designed to be relatively thin and is provided with a pair of electrodes faced to each other. The outer part of the lead rod is designed to be relatively thick and has an outer diameter between 0.5 and 3 mm. The fluorescent tube apparatus has a holder which is elastically contacted with the outer part of the lead rod to hold the compact fluorescent tube and which is electrically connected to the lead rod.
However, since the lead rod penetrating the sealed member supported by the holder in contact therewith, a load applied to the lead rod is directly transmitted to the sealed member, in particular, that part penetrated by the lead rod. This may result in a damage of the sealed member. For example, in an exchanging operation of the compact fluorescent tube, the lead rod may be applied with a large force so that the sealed member is possibly broken. Taking this problem into consideration, at present, not only the compact fluorescent tube is exchanged but also peripheral devices are exchanged together with the compact fluorescent tube.
It is therefore an exemplary object of this invention to provide a connector capable of connecting a connection object, such as a fluorescent tube, in an easily exchangeable manner.
It is another exemplary object of this invention to provide a connector capable of suppressing release of a connection object in an anti-connecting direction upon occurrence of vibration or shock.
It is still another exemplary object of this invention to provide a connector capable of preventing a connection object from being applied with an excessive load even if the connection object is connected with axial misalignment.
Other objects of the present invention will become clear as the description proceeds.
According to an exemplary aspect of the present invention, there is provided a connector for connecting a first connection object and a second connection object to each other, the connector comprising a contact and a housing holding the contact, the contact including a first connecting portion to be connected to the first connection object, a second connecting portion to be connected to the second connection object, and a holding portion held by the housing, the first connecting portion including a base portion, a pair of coupling portions extending from the base portion and faced to each other, and a pair of contacting portions extending from the coupling portions, respectively, and faced to each other, each of the contacting portions including a fitting portion coupled to the coupling portion and fitted to the first connection object and a free end extending on a side opposite to the fitting portion, the contact being designed so that, upon connection with the first connection object, a distance between the contacting portions is narrower at the fitting portions than that at the free ends.
Referring to
The connector depicted at 1 in
As illustrated in
Turning back to
The first connecting portion 11 has a base portion 14, a pair of coupling portions 15 extending from the base portion 14 and faced to each other, and a pair of contacting portions 16 respectively extending from the coupling portions 15 and faced to each other. Each of the contacting portions 16 has a fitting portion coupled to the coupling portion 15 and fitted to the ferrule 4, and a free end 18 extending on a side opposite to the fitting portion 17. The fitting portions 17 are provided with a pair of tongue portions 19. The tongue portions 19 extend from the fitting portions 17 outward and away from each other and define an insertion port for insertion of an end portion of the first connection object 6, i.e., the ferrule 4.
The contact 7 is designed so that, upon connection with the first connection object 6, the distance between the contacting portions 16 is narrower at the fitting portions 17 than that at the free ends 18. Therefore, as will later be described in detail, the ferrule 4 fitted to the fitting portions 17 is pressed by the contacting portions 16 towards the base portion 14 and, as a result, contacted with both of the contacting portions 16 and the base portion 14.
The contact 7 further has a pair of stopper portions 21 extending leftward and rightward from the base portion 14 and engaged with the housing 8. When the first connection object 6 is removed from the connector 1, the contact 7 is applied with a releasing force to release the contact 7 from the housing 8. However, since the stopper portions 21 are engaged with the housing 8, the contact 7 is prevented from being released from the housing 8.
Referring to
The housing 8 has an opening portion 22 formed on its upper surface to allow insertion of the end portion of the first connection object 6. The opening portion 22 is provided with a tapered portion 23 formed at its upper edge to facilitate the insertion of the end portion of the first connection object 6. Below the opening portion 22, a cavity 24 is continuously formed. The cavity 24 is opened frontward and adapted to receive the first connecting portion 11. The base portion 14 of the contact 7 is disposed at a bottom of the cavity 24. The stopper portions 21 extend along the bottom of the cavity 24 and are engaged with a stopper rest 25 of the housing 8.
The housing 8 is provided with a contact press-fit hole 26 formed below the cavity 24 and opened frontward. The holding portion 13 of the contact 7 is press-fitted to the contact press-fit hole 26.
The housing 8 is provided with a pair of hold-down press-fit holes 27 formed at bottom ends of left and right side surfaces and receiving a pair of metal hold-downs 28 press-fitted thereto, respectively. The hold-downs 28 serve to maintain the connector 1 at a predetermined position with respect to the second connection object. The housing 8 is provided with a flat sucking surface 29 formed at its bottom between the press-fit holes 27.
Further, the housing 8 has a plurality of stopper protrusions 31 formed at its lower part to prevent the connector 1 from being released from the second connection object. The housing 8 is provided with a distinct-shaped or angled portion 32 formed at its upper part to prevent the connector 1 from being erroneously mounted to the second connection object.
Referring to
As illustrated in
Referring to
It is assumed that, due to misalignment of the connector 1 with respect to the second connection object upon mounting or misalignment during assembling of the second connection object itself, an axis 34 of the first connection object 6 has an inclination angle θ (θ offset) with respect to the axis 33 of the connector 1 as illustrated in
Specifically, a combination of the coupling portions 15 and the contacting portions 16 forms a U-shaped spring with the base portion 14 serving as a fixed end of the spring. Even if connection is made with the θ offset as illustrated in
Referring to
As illustrated in
As a result, as illustrated in
As illustrated in
Referring to
In the modification illustrated in
Referring to
The connector 1 illustrated in
As illustrated in
With the connector 1 illustrated in
Although this invention has been described in conjunction with the exemplary embodiment thereof, this invention may be modified in various other manners.
Number | Date | Country | Kind |
---|---|---|---|
2006-311386 | Nov 2006 | JP | national |
Number | Name | Date | Kind |
---|---|---|---|
5886758 | Ibaraki | Mar 1999 | A |
7137841 | Liao et al. | Nov 2006 | B1 |
7303421 | Liao | Dec 2007 | B2 |
7344397 | Miyazono | Mar 2008 | B2 |
7361044 | Pandey et al. | Apr 2008 | B1 |
Number | Date | Country |
---|---|---|
52-88376 | Jul 1977 | JP |
61-193686 | Dec 1986 | JP |
62-193030 | Aug 1987 | JP |
7-130437 | May 1995 | JP |
7-030482 | Jun 1995 | JP |
2008-084856 | Apr 2008 | JP |
Number | Date | Country | |
---|---|---|---|
20080119092 A1 | May 2008 | US |