JP2014154415A - Contact terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an easy-to-replace contact terminal in which the wiring connection does not move up and down, and which can come into contact reliably with the terminal of a secondary battery, although it is less likely to cause poor contact or spark.SOLUTION: In a contact terminal 10 including a fixing part 11 being fixed to a board 20 on the charge and discharge device side, a first electrification part 12 attached to the fixing part 11, a second electrification part 13 provided movably for the first electrification part 12, a spring member 14 arranged between the first electrification part 12 and second electrification part 13, and a flexible coupling part 18 for connecting the first electrification part 12 and second electrification part 13 electrically, the first electrification part 12 is detachable from the fixing part 11.

Description

  The present invention relates to a contact terminal used by being connected to a charge / discharge device.

  2. Description of the Related Art Conventionally, contact terminals (probe contactors) used by connecting to a charge / discharge device when charging / discharging a secondary battery are used. Such contact terminals are fixed to a resin board or the like according to the terminal pitch of the battery, and are pressed against the terminals of the secondary batteries arranged without gaps on the pallet by moving the resin board up and down. The pressed contact terminal is elastically moved up and down, and is formed so as to surely contact the terminal of the secondary battery (see, for example, Patent Document 1).

JP-A-11-149945

  However, since the above-described conventional contact terminal is fixed to a resin board or the like, a dedicated tool is required when replacing the contact terminal, and the work is complicated.

  In addition, when the contact terminal is pressed against the terminal of the secondary battery, the wiring connection part moves up and down accompanying the contact terminal, so that the bundled electric wire may be pushed up and cause contact failure or spark. .

  Therefore, the present invention provides a contact terminal that can reliably contact the terminal of the secondary battery and can be easily exchanged even though the wiring connection portion does not move up and down and hardly causes contact failure or spark. The task is to do.

The present invention has been made to solve the above-described problems, and is characterized by the following.
(Claim 1)
The contact terminal according to claim 1 is a contact terminal used by being connected to a charging / discharging device, and a fixing portion fixed to the board on the charging / discharging device side, and a first energization attached to the fixing portion. A first energizing part, a second energizing part provided movably with respect to the first energizing part, a spring member disposed between the first energizing part and the second energizing part, and the first energizing part And a flexible coupling part that electrically connects the second energization part, and the first energization part is detachable from the fixed part.

(Claim 2)
The invention described in claim 2 has the following features in addition to the features of the invention described in claim 1 described above.
That is, the spring member is subjected to insulation treatment.

(Claim 3)
The invention described in claim 3 is characterized by the following points in addition to the characteristics of the invention described in claim 1 or 2.
That is, an insulating member is provided at the end of the spring member.

(Claim 4)
The invention according to claim 4 is characterized by the following points in addition to the features of the invention according to any one of claims 1 to 3.
That is, a contact blade for scraping an oxide film of the object to be measured is provided at the tip of the second energization part.

  The invention according to claim 1 is as described above, and is provided so as to be movable with respect to the fixing portion fixed to the board, the first energization portion attached to the fixing portion, and the first energization portion. A second energization unit, and the first energization unit on the charge / discharge device side and the second energization unit on the secondary battery side are separated, so even when the second energization unit is pressed and moved The 1st electricity supply part is being fixed. That is, since the second energization part can make a stroke and contact with the terminal of the secondary battery without fail, the first energization part (the member connected to the charging / discharging device) does not move up and down. And can make it difficult to cause sparks.

  In addition, since the flexible coupling portion that electrically connects the first energization portion and the second energization portion is provided, the separated first energization portion and the first energization portion without interfering with the stroke of the second energization portion. It is possible to energize between the two energization units.

  Also, if you want to change the corresponding current value, you can change the corresponding current value only by changing the allowable current of the coupling part (for example, by changing the number of copper wires). Can be made common, and the manufacturing cost can be reduced.

  In addition, since the first energization part and the second energization part can be moved obliquely with each other by being coupled by the flexible coupling part, even when the terminal of the secondary battery is inclined, the contact is ensured. can do. Thereby, contact stability improves and heat_generation | fever temperature and a spark can be suppressed.

  Further, since the first energization part is detachable with respect to the fixed part, only main components of the contact terminal can be easily replaced, and maintenance is easy.

  Further, the invention according to claim 2 is as described above, and since the spring member is insulated, the current path can be limited, and it is possible to prevent sparking and stabilize energization. . Further, even when the flexible coupling portion bends and contacts the spring member, no current flows through the spring member and no spark is generated.

  Further, the invention according to claim 3 is as described above, and since the insulating member is provided at the end of the spring member, the first energizing portion and the second energizing portion are electrically connected via the spring member. Therefore, it is possible to limit the current path, prevent sparking, and enable stable energization.

  Further, the invention according to claim 4 is as described above, and the tip of the second energizing portion is provided with a contact blade for scraping the oxide film of the object to be measured. By shaving, more stable contact performance can be obtained. In particular, the contact terminal of the present invention allows the first energization part and the second energization part to be coupled by a flexible coupling part, so that the second energization part can be inclined and brought into contact with the terminal of the secondary battery. It is. For this reason, if it is intentionally tilted and brought into contact with the terminal of the secondary battery, a lateral force is applied between the second energizing part and the terminal of the secondary battery, so that the contact blade more reliably oxidizes. The film can be removed, and the contact performance can be further improved.

It is a side view of the contact terminal concerning a 1st embodiment. It is a perspective view of the contact terminal concerning a 1st embodiment. It is a disassembled perspective view of the contact terminal which concerns on 1st Embodiment. It is a partial cross section perspective view of the contact terminal concerning a 1st embodiment. It is a side view of the contact terminal which concerns on 2nd Embodiment. It is a perspective view of the contact terminal which concerns on 2nd Embodiment. It is a disassembled perspective view of the contact terminal which concerns on 2nd Embodiment. It is a partial cross section perspective view of the contact terminal which concerns on 2nd Embodiment. It is a side view of the contact terminal which concerns on 3rd Embodiment. It is a perspective view of the contact terminal which concerns on 3rd Embodiment. It is a disassembled perspective view of the contact terminal which concerns on 3rd Embodiment. It is a partial cross section perspective view of the contact terminal which concerns on 3rd Embodiment.

(First embodiment)
A first embodiment of the present invention will be described with reference to FIGS.

  The contact terminal 10 according to the present embodiment is used by being connected to a charge / discharge device in order to charge / discharge a secondary battery. For example, the secondary batteries are arranged on the pallet without gaps, and the resin board 20 is arranged opposite to the terminals of the secondary batteries so that the terminals can be separated from each other. .

  The contact terminal 10 is fixed to the board 20 so that the tip thereof faces the terminal of the secondary battery, and the base end is wired to the charging / discharging device. The tip of the contact terminal 10 is elastically movable up and down, and when the board 20 is moved down, the tip of the contact terminal 10 that can move up and down is pressed against the terminal of the secondary battery. The contact terminal 10 that is pressed is formed so that its tip elastically moves up and down and reliably contacts the terminal of the secondary battery.

  1-4, as shown in FIGS. 1-4, the fixed part 11, the 1st electricity supply part 12, the 2nd electricity supply part 13, the spring member 14, the washer 15, the flat knitted copper wire 18, A nut 16, a screw 17, and a fixing screw 19 are provided.

  The fixing part 11 is fixed to the board 20 and is a part that becomes a base of the contact terminal 10. The fixed portion 11 is a cylindrical conductive metal member, and a held portion 11a formed on the outer periphery is embedded and fixed in the board 20 so that it cannot be easily removed. Further, a female screw portion 11b is formed on the inner periphery of the fixing portion 11, and is formed so that a first energizing portion 12 described later can be screwed.

The 1st electricity supply part 12 is an electroconductive metal member with which the above-mentioned fixing | fixed part 11 is mounted | worn. An end portion of the first energization portion 12 is formed with a male screw portion 12a. By screwing the male screw portion 12a with the female screw portion 11b of the fixing portion 11 described above, the first energization portion 12 can be connected. It is formed so that it can be attached to the fixed portion 11. In other words, the first energization part 12 can be easily detached from the fixing part 11 by turning the first energization part 12 to release screwing.
The charging / discharging device is wired to either the first energizing unit 12 or the fixed unit 11 described above.

  The second energization unit 13 is a conductive metal member that is provided separately from the first energization unit 12 and is movable with respect to the first energization unit 12. This 2nd electricity supply part 13 is a front-end | tip part pressed against the terminal of a secondary battery, The contact blade 13a for scraping the oxide film of a to-be-measured object is provided in this front-end | tip part. That is, when an oxide film or the like is formed on the surface of the terminal of the secondary battery, the contact resistance is increased. Therefore, the contact blade 13a sharply formed to reduce the contact resistance by breaking through the oxide film or the like is provided. Is provided. In the present embodiment, the contact blade 13a in which a plurality of quadrangular pyramids are continuous is formed by cutting the tip surface of the second energization portion 13.

  The spring member 14 is a compression spring disposed between the first energization unit 12 and the second energization unit 13. The free length of the spring member 14 is set to be substantially equal to the distance between the first energization part 12 and the second energization part 13 when the contact terminal 10 is assembled. The spring member 14 is attached so that one end faces the first energizing portion 12 and the other end faces the second energizing portion 13 when viewed in the compression direction. Thereby, the second energization part 13 is formed so that it can move elastically toward the first energization part 12 by compressing the spring member 14.

  The spring member 14 is insulated so that the spring member 14 does not form a current path. Specifically, the surface of the spring member 14 is coated with Teflon (registered trademark). Although not particularly illustrated, when there are a plurality of contact terminals 10 having different allowable currents, spring loads, and the like, the type of the contact terminal 10 may be discriminated by the color of the coating of the insulation treatment.

  The washer 15 is an insulating member disposed at the end of the spring member 14, and is a resin ring-shaped member in this embodiment. The washer 15 is disposed between the spring member 14 and the first energizing portion 12 and between the spring member 14 and the second energizing portion 13 so as to receive both ends of the spring member 14. Thereby, the spring member 14 and the 1st electricity supply part 12 do not contact, and the spring member 14 and the 2nd electricity supply part 13 do not contact. Further, the washer 15 stabilizes the seating surface of the spring member 14.

  The flat knitted copper wire 18 is formed by knitting a plurality of conductive wires into a band shape, and is provided to electrically connect the first energizing portion 12 and the second energizing portion 13. The flat knitted copper wire 18 is provided so as to connect the first energization part 12 and the second energization part 13, and also plays a role of coupling the first energization part 12 and the second energization part 13. In the present embodiment, a plurality of strip-shaped flat knitted copper wires 18 are provided between the first energization part 12 and the second energization part 13 inside the spring member 14.

  In addition, since this flat knitted copper wire 18 can bend flexibly, even when the 2nd electricity supply part 13 is pressed on the terminal of a secondary battery and the 1st electricity supply part 12 and the 2nd electricity supply part 13 approached. It is formed so as not to obstruct the stroke of the first energizing portion 12 by flexing flexibly.

  The nut 16 is for fixing the flat knitted copper wire 18 to the first energizing portion 12 on one end side of the flat knitted copper wire 18. The nut 16 is screwed with a fixing screw 19 which will be described later, and the flat knitted copper wire 18 is fixed to the first energizing portion 12 by screwing the nut 16 and the fixing screw 19 together. It has become.

  The screw 17 is for fixing the flat knitted copper wire 18 to the second energizing portion 13 on the other end side of the flat knitted copper wire 18. The screw 17 passes through the flat knitted copper wire 18 and is screwed into a female screw (not shown) formed on the back surface of the second energizing portion 13. The flat knitted copper wire 18 is fixed to the second energizing portion 13 by being screwed with the female screw.

  The fixing screw 19 is a screw that passes through the inside of the first energizing portion 12 and the flat knitted copper wire 18 and is screwed into the nut 16. As described above, the flat screw copper wire 18 is fixed to the first energizing portion 12 by the fixing screw 19 being screwed with the nut 16.

  According to the embodiment as described above, the fixing portion 11 fixed to the board 20, the first energization portion 12 attached to the fixing portion 11, and the first energization portion 12 are movably provided. The second energization part 13 is provided, and the first energization part 12 on the charge / discharge device side and the second energization part 13 on the secondary battery side are separated, so the second energization part 13 is pressed. The first energization section 12 is fixed even when it is moved. That is, the second energization unit 13 can make a stroke and reliably contact the terminal of the secondary battery, and the first energization unit 12 (the member on the side wired to the charge / discharge device) does not move up and down. It can make it difficult to cause poor contact and sparks.

  Moreover, since the flexible coupling part 18 which electrically connects the said 1st electricity supply part 12 and the said 2nd electricity supply part 13 is provided, it isolate | separated the 1st, without interfering with the stroke of the 2nd electricity supply part 13. It is possible to energize between the energization unit 12 and the second energization unit 13.

  In addition, since the corresponding current value can be changed only by changing the allowable current of the connecting portion 18 (for example, changing the number of copper wires), parts other than the connecting portion 18 can be shared, and the manufacturing cost can be reduced. Can do.

  In addition, since the first energization unit 12 and the second energization unit 13 can be moved obliquely by being coupled by the flexible coupling unit 18, even when the terminals of the secondary battery are inclined. A reliable contact can be made. Thereby, contact stability improves and heat_generation | fever temperature and a spark can be suppressed.

  Moreover, since the said 1st electricity supply part 12 is detachable with respect to the said fixing | fixed part 11, only the main components of the contact terminal 10 can be replaced | exchanged easily, and a maintenance is easy.

  In addition, since the spring member 14 is insulated, the current path can be limited, and sparking can be prevented to stabilize energization. Further, even when the flexible coupling portion 18 bends and contacts the spring member 14, no current flows through the spring member 14 and no spark is generated.

  In addition, since the insulating member 15 is provided at the end of the spring member 14, it is possible to prevent the first energizing portion 12 and the second energizing portion 13 from being electrically connected via the spring member 14. A path | route can be limited and a spark can be prevented and stable electricity supply can be performed. For example, even when the insulating coating of the spring member 14 is peeled off due to wear, the first energizing portion 12 and the second energizing portion 13 can be reliably insulated.

  In addition, since the contact blade 13a for scraping the oxide film of the object to be measured is provided at the tip of the second energization portion 13, more stable contact performance can be obtained by scraping the oxide film with the contact blade 13a. Can be obtained. In particular, in the contact terminal 10 according to the present embodiment, the first energization unit 12 and the second energization unit 13 are coupled by the flexible coupling unit 18, so that the second energization unit 13 is inclined and the secondary battery is connected to the contact terminal 10. It is possible to contact the terminal. For this reason, if it is made to incline and it is made to contact with the terminal of a secondary battery, since the force to a horizontal direction will be added between the 2nd electricity supply part 13 and the terminal of a secondary battery, it will be more reliable by the contact blade 13a. In addition, the oxide film can be removed, and the contact performance can be further improved. In this case, the contact blade 13a preferably has a shape (for example, a polygonal pyramid shape) provided with a sharp blade on the side.

(Second Embodiment)
A second embodiment of the present invention will be described with reference to FIGS. Since the basic configuration of the present embodiment is not different from that of the first embodiment, only the differences will be described while avoiding redundant description.

The feature of this embodiment is that the flat knitted copper wire 18 is disposed outside the spring member 14.
As shown in FIGS. 5 to 8, the contact terminal 10 according to the present embodiment includes a fixed portion 11, a first energizing portion 12, a second energizing portion 13, a spring member 14, a washer 15, and flat knitted copper Line 18.

  In the present embodiment, a recess is formed so as to face the first energization portion 12 and the second energization portion 13, and the washer 15 is fitted into the recess. The spring member 14 is attached with the washer 15 as a seating surface. In addition, the washer 15 of this embodiment is also arrange | positioned between the spring member 14 and the 1st electricity supply part 12, and between the spring member 14 and the 2nd electricity supply part 13 similarly to 1st Embodiment. Thereby, the spring member 14 and the 1st electricity supply part 12 do not contact, and the spring member 14 and the 2nd electricity supply part 13 do not contact.

  A plurality of strip-shaped flat knitted copper wires 18 are provided between the first energizing portion 12 and the second energizing portion 13 so as to surround the spring member 14. The flat knitted copper wire 18 is fixed to the outer peripheral portion of the first energizing portion 12 and the outer peripheral portion of the second energizing portion 13 by, for example, soldering.

  According to such a configuration, even when the first energizing portion 12 is pressed against the terminal of the secondary battery and the first energizing portion 12 and the second energizing portion 13 approach each other, the flat knitted copper wire 18 has the probe outer diameter. It is possible to prevent the toner from protruding outward.

(Third embodiment)
A third embodiment of the present invention will be described with reference to FIGS. Since the basic configuration of the present embodiment is not different from that of the second embodiment, only the differences will be described while avoiding repeated description.

  The feature of this embodiment is that the movement range of the tip can be regulated by providing the shaft portion 13 b in the second energization portion 13.

  As shown in FIGS. 9 to 12, the contact terminal 10 according to the present embodiment includes a fixed portion 11, a first energizing portion 12, a second energizing portion 13, a spring member 14, a washer 15, and flat knitted copper. Line 18.

A shaft hole 12b is provided at the center of the first energizing portion 12 of the present embodiment. Moreover, the 2nd electricity supply part 13 of this embodiment is provided with the axial part 13b inserted in the said axial hole 12b. The shaft hole 12b has a diameter larger than that of the shaft portion 13b so that the shaft portion 13b can be slightly tilted. Thus, a slight clearance is provided around the shaft portion 13b, and the tip of the second energization portion 13 is inclined within the clearance range.
The spring member 14 is disposed along the outer periphery of the shaft portion 13b of the second energization portion 13.

  Further, the washer 15 that is an insulating member is provided between the spring member 14 and the first energization portion 12, thereby preventing the spring member 14 and the first energization portion 12 from contacting each other.

  According to such a configuration, it is possible to adjust the tilting range of the first energizing portion 12 by adjusting the clearance between the shaft hole 12b and the shaft portion 13b. For example, compared to the case where the tilting range is restricted only by the spring load of the spring member 14 as in the first embodiment or the second embodiment, the tilting range can be regulated more reliably, preventing excessive tilting. can do.

  In the present embodiment, the spring member 14 is disposed inside the flat knitted copper wire 18, but the spring member 14 may be disposed outside the flat knitted copper wire 18.

(Other embodiments)
In the above-described embodiment, a flat knitted copper wire is used as the connecting portion 18, but the embodiment of the present invention is not limited to this. In other words, the coupling portion 18 may be anything that does not hinder the stroke of the second energization portion 13 and ensures energization between the first energization portion 12 and the second energization portion 13.

  For example, you may connect between the 1st electricity supply part 12 and the 2nd electricity supply part 13 with a some copper single wire. At this time, a copper single wire may be twisted in a spiral.

  Further, a mesh-shaped metal material rounded into a cylindrical shape is arranged so as to cover the periphery of the spring member 14, one end of this metal material is connected to the first current-carrying part 12, and the other end is connected to the second current-carrying part 13. You may make it connect.

DESCRIPTION OF SYMBOLS 10 Contact terminal 11 Fixed part 11a Held part 11b Female screw part 12 1st electricity supply part 12a Male screw part 12b Shaft hole 13 2nd electricity supply part 13a Contact blade 13b Shaft part 14 Spring member 15 Washer (insulating member)
16 Nut 17 Screw 18 Flat braided copper wire (joint)
19 Fixing screw 20 Board

Claims (4)

A contact terminal used by connecting to a charge / discharge device,
A fixed part fixed to the board on the charge / discharge device side;
A first energization part mounted on the fixed part;
A second energization unit provided movably with respect to the first energization unit;
A spring member disposed between the first energization part and the second energization part;
A flexible coupling portion that electrically connects the first energization portion and the second energization portion;
With
The contact terminal is characterized in that the first energization part is detachable from the fixed part.   The contact terminal according to claim 1, wherein the spring member is insulated.   The contact terminal according to claim 1, wherein an insulating member is provided at an end of the spring member.   The contact terminal according to any one of claims 1 to 3, wherein a contact blade for scraping an oxide film of an object to be measured is provided at a tip of the second energization part.

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