JP2014102883A - Chuck device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chuck device capable of eliminating variation in a holding force of a chuck member to an electrode terminal of a battery.SOLUTION: A chuck device comprises: a plurality of chuck members individually holding a pair of electrode terminals of a plurality of batteries arranged in parallel; a first operation member that can move in a front and rear direction by driving drive means; second operation members movably attached to the first operation member so as to correspond to the respective chuck members, and closing the chuck members by frontward movement by the first operation member; and a spring member mounted between the respective second operation members and the first operation member so as to correspond to the respective second operation members, and pressing the respective second operation members frontward. Variation in a holding force of the chuck member to the electrode terminal is resolved by a spring force of the spring member to the second operation members.

Description

  The present invention relates to a chuck device that holds an electrode terminal of a battery.

  Recently, thin secondary batteries (hereinafter referred to as “secondary batteries”) formed in a plate shape are used in many technical fields including electric vehicles. This secondary battery has a structure in which flaky electrode terminals of a positive electrode and a negative electrode protrude in one direction from a flat case.

  Conventionally, this type of secondary battery charging / discharging device is equipped with a chuck device including a chuck member that grips (chucks) a pair of electrode terminals of the secondary battery.

  For example, a chuck member of a conventional chuck device includes a pair of strip-shaped leaf springs that open in a V shape on the front end side and are sandwiched between a pair of rollers on the rear end side. And after arrange | positioning the electrode terminal of a secondary battery between the leaf | plate springs opened in V shape, a pair of roller is moved ahead and a leaf | plate spring opened in V shape is closed with a roller, and a pair of A leaf spring holds the electrode terminal (see, for example, Patent Document 1).

JP 2012-22847 A

  However, the conventional structure that grips the electrode terminal by closing the chuck member made of a leaf spring opened in a V shape with a pair of rollers in this way is caused by the inclination of the drive source for moving the roller and the variation of individual parts. There was variation in the gripping force of each member.

  The present invention has been devised in view of such circumstances, and an object of the present invention is to provide a chuck device that eliminates variations in gripping force of a chuck member with respect to electrode terminals of a battery.

  A chuck device according to one aspect includes a plurality of chuck members that individually grip a pair of electrode terminals of a plurality of batteries arranged in parallel, a first operating member that can be moved back and forth by driving of a driving unit, and each of the chuck members Corresponding to the first actuating member, movably attached to the first actuating member, and the first actuating member moving forward to close the chuck member; A spring member that is mounted between the second actuating member and the first actuating member and biases each second actuating member forward, and the spring force of the spring member with respect to the second actuating member is The variation in the gripping force of the chuck member with respect to the electrode terminal is eliminated.

  According to the chuck device of the present disclosure, when the first actuating member moves forward by the drive of the driving means, the second actuating member moves forward to close the chuck member. A spring member mounted between the actuating member and the first actuating member biases the second actuating member forward. As a result, variations in the gripping force of the chuck member with respect to the electrode terminal are absorbed, and a reliable gripping force of the chuck member with respect to the electrode terminal can be obtained.

It is a perspective view of one embodiment of a chuck device. It is a top view of one embodiment of a chuck device. It is a side view of one embodiment of a chuck device. It is a front view of one embodiment of a chuck device. It is a principal part expanded side view of one Embodiment of the chuck apparatus in the state where the chuck member opened. It is a principal part perspective view of one Embodiment of the chuck device in the state where the chuck member opened. It is a top view of one Embodiment of the chuck member of the open state. It is an expansion perspective view of one embodiment of the chuck member in the opened state. It is a principal part expanded side view of one Embodiment of the chuck apparatus in the state where the chuck member closed. It is a top view of one embodiment of a chuck member in a closed state. It is an expansion perspective view of one embodiment of a chuck member in the closed state. It is a top view of one Embodiment of the chuck member of the open state. It is a top view of one embodiment of a chuck member in a closed state. It is a perspective view of a battery storage body. It is a perspective view of a secondary battery. It is a top view of a secondary battery.

  Hereinafter, a chuck device for a secondary battery according to an embodiment of the present invention will be described with reference to the drawings.

  1 is a perspective view of the chuck device, and FIG. 2 is a plan view of the chuck device. In the figure, reference numeral 1 denotes a base on which an air cylinder 3 is mounted at the center of the rear part, and side walls 5 on the left and right front sides of the base 1. Are provided opposite to each other. The air cylinder 3 is an example of a driving unit.

  As shown in FIGS. 1 and 3, L-shaped notches 7 and 9 are provided on the front side of the side wall 5 in the upper and lower sides, and between the left notch 7 and the right notch 7, Between each of the notches 9 and the right-side notch 9, prismatic support members 11 are respectively constructed.

  A large number of chuck members 67, which will be described later, are pivotally supported on the upper and lower support members 11, and each chuck member 67 is positioned above and below the large number of secondary batteries 99 housed in the battery housing body 97 of FIG. The electrode terminals 101 and 103 are individually held.

  As shown in FIGS. 15 and 16, the secondary battery 99 has a structure in which positive and negative electrode terminals 101 and 103 protrude in one direction from a flat case 105.

  As shown in FIG. 14, the battery housing 97 is a resin box in which a pair of upper and lower electrode terminals 101, 103 protrude forward to house the secondary battery 99 in the vertical direction. It is a member. A plurality of storage grooves 109 for storing the secondary battery 99 in the vertical direction are opposed to the width direction of the battery storage body 97 in the prismatic holding member 107 protruding from the upper inner periphery on the front side and the back side. It is formed at equal intervals. Similarly, a large number of storage grooves 113 are formed at the same positions as the storage grooves 109 in the holding member 111 protruding from the lower inner periphery of the front side and the back side.

  Then, by inserting the secondary battery 99 vertically into the upper and lower housing grooves 109 and 113 from above the battery housing body 97, a large number of secondary batteries 99 are housed in parallel in the battery housing body 97. It has become.

  The piston rod 13 of the air cylinder 3 shown in FIG. 2 expands and contracts in the front-rear direction of the base 1, and a first operating member (hereinafter referred to as “first operating member”) shown in FIGS. 15) 15 rectangular plate members 17 are vertically attached. As will be described later, the first actuating member 15 opens and closes the chuck member 67 in conjunction with a second actuating member (hereinafter referred to as “second actuating member”) 41.

  As shown in FIG. 2, columnar guide members 21 that pass through the casing 19 of the air cylinder 3 are arranged on the left and right sides of the piston rod 13 in parallel with the piston rod 13. It is connected.

  As shown in FIGS. 3 and 5, plate members 23, 25 having a rectangular shape in plan view that are long in the width direction of the base 1 are fixed to the upper and lower portions of the plate member 17 with a plurality of bolts 27. The plate members 23 and 25 are fixed to the plate member 17 at the rear end side, and the front end side protrudes forward.

  Further, a plate member 29 having substantially the same shape as the plate member 23 is fixed to the upper portion of the plate member 23 with a plurality of screws 31. The rear end side of the plate member 29 is fixed to the plate member 23, and protrudes forward with a predetermined space between the plate member 23.

  Similarly, a plate member 33 having substantially the same shape as that of the plate member 25 is fixed to the lower portion of the plate member 25 with a plurality of screws 31. The plate member 33 also has a rear end fixed to the plate member 25 and protrudes forward with a predetermined gap between the plate member 33 and the plate member 25.

  As shown in FIGS. 1, 5 and 6, a large number of bolt members 37 having a cylindrical retaining portion 35 on the front end side are provided at the front portion of the plate members 23, 25, 29, 33. It is screwed along the front-back direction. The bolt member 37 is an example of a rod-shaped guide member.

  The bolt members 37 are arranged corresponding to the electrode terminals 101 and 103 of the secondary battery 99 housed in the battery housing body 97 of FIG. 14, and the bolt members 37 screwed to the plate members 23 and 29 are arranged on the upper side. The electrode members 101 are alternately screwed to the plate members 23 and 29 corresponding to the electrode terminals 101.

  Similarly, the bolt members 37 attached to the plate members 25 and 33 are alternately screwed to the plate members 25 and 33 corresponding to the lower electrode terminals 103 of the secondary battery 99.

  In this embodiment, 16 bolt members 37 are screwed to the plate members 23, 25, 29, and 33 as an example. The bolt members 37 screwed to the plate members 23 and 33 have the same vertical position, and the bolt members 37 screwed to the plate members 25 and 29 have the same vertical position.

  As described above, the first actuating member 15 includes the plate members 17, 23, 25, 29, 33 and a large number of bolt members 37 screwed to the front portions of the plate members 23, 25, 29, 33. The first actuating member 15 moves in the front-rear direction of the base 1 by the expansion and contraction of the piston rod 13. As shown in FIG. 6, the second actuating member 41 is attached to the shaft portion 39 of each bolt member 37 having a smooth outer peripheral shape via a holding member 43.

  Hereinafter, the structure of the second actuating member 41 will be described. However, since the second actuating member 41 attached to each bolt member 37 has the same structure, the second actuating member 41 attached to one bolt member 37 screwed to the plate member 29 in FIG. The structure will be described based on the two actuating members 41.

  The second actuating member 41 opens and closes a later-described chuck member 67 in conjunction with the first actuating member 15. As described above, the second actuating member 41 has the holding member 43 as shown in FIGS. It is attached to the shaft part 39 of the bolt member 37 via the intermediate part. A coil spring 44 that urges the second operating member 41 forward of the base 1 is wound around the shaft portion 39 between the holding member 43 and the plate member 29. The coil spring 44 is an example of a spring member.

  The holding member 43 includes, for example, a holding member main body 45 formed in a cubic shape, and mounting flanges 47 projecting laterally at the left and right lower portions of the holding member main body 45, and is provided at the center of the holding member main body 45. The shaft portion 39 is inserted through the bolt insertion hole 49. The mounting flange 47 is provided with a screw insertion hole 50.

  In the figure, 51 and 53 are a pair of upper and lower plate members formed in a strip shape, 55 is a prismatic spacer fixed to the rear end side of the lower plate member 53, A cylindrical spacer 57 having the same height as the spacer 55 is attached. The inner periphery of the spacer 57 is threaded, and screw holes 59 are provided on the left and right upper portions of the spacer 55 as shown in FIG.

  On the other hand, screw insertion holes (not shown) are provided at the four corners of the upper plate member 51 in correspondence with the spacers 57 and the screw holes 59 in FIG. Accordingly, the screw is screwed into the screw hole 59 through the screw insertion hole of the plate member 51, and the screw 61 is screwed into the spacer 57 through the screw insertion hole 50 of the holding member 43 and the screw hole of the plate member 51 as shown in FIG. Thus, the plate members 51 and 53 are attached to the shaft portion 39.

  Further, as shown in FIGS. 5 and 7, three operation pins 63 and 65 are vertically attached between the plate members 51 and 53. The operation pin 63 is an example of an operation member. As shown in FIG. 7, the pair of left and right operation pins 63 are positioned slightly rearward from the center of the plate members 51 and 53 and are disposed symmetrically with respect to the central axis p in the longitudinal direction of the plate members 51 and 53. .

  On the other hand, the operation pin 65 is positioned on the central axis p on the distal end side of the plate member 53 relative to the operation pin 63, and the second operating member 41 is an operation for attaching between the pair of upper and lower plate members 51, 53 and these Pins 63 and 65 are provided.

  As shown in FIGS. 6 and 7, the rear end side of the chuck member 67 described below is inserted between the left and right spacers 57 attached to the plate member 53.

  As shown in FIGS. 7 and 8, the chuck member 67 includes a pair of upper and lower thin metal plates 69 and 71 that are pivotally supported by the support member 11 of FIG. And a pair of gripping members 73 to be attached. The metal plates 69 and 71 are examples of metal members.

  The metal plates 69 and 71 have a tapered shape in which one side portion on the front end side is notched and the front end portions are separated from each other. Further, the rear end portion is also tapered so that one side portion is cut out obliquely outward and separated from each other, as shown in FIG. 8, the rear end portion of the metal plate 69 and the rear end portion of the metal plate 71. Thus, a V-shaped gap 75 in plan view is formed.

  6 and 7, the rear end portion of the chuck member 67 (metal plates 69, 71) is inserted between the left and right spacers 57, but the operation pin 65 is disposed in the gap 75, The operation pin 65 is in contact with the rear end side portion of the metal plates 69 and 71. As described above, the operation pin 65 is brought into contact with the rear end side portion of the metal plates 69 and 71, whereby the front end side of the chuck member 67 (metal plates 69 and 71) is held open.

  In FIG. 8, reference numeral 77 denotes a gripping part body of the gripping member 73 fixed to the tips of the metal plates 69 and 71 with screws 79. The gripping part body 79 is made of resin and has a rectangular block shape in a tapered side view. Is formed. A metal prismatic chip 83 is attached in the vertical direction along a recess 81 formed inside the gripping body 79, and two strip-shaped plate springs 85 are connected to the chip 83.

  The right and left gripping part main bodies 79 are the same member and are screwed to the metal plate 69 with one side turned upside down. The gripping part main body 79 is attached by inserting the tips of the metal plates 69 and 71 into a slit 87 provided at the center of the rear side of the gripping part main body 79, and screwing the screw 79 from the stepped part 89 provided above the slit 87. This is done by screwing in the direction of the plates 69 and 71.

  A large number of irregularities 91 are formed on the surface of the chip 83, and the electrode terminals of the secondary battery are held by the surfaces of the left and right chips 83. The leaf spring 85 is joined at the rear end side, and a cord extending from a measuring instrument such as a voltmeter (not shown) can be connected to a connection hole 93 formed at the rear end side.

  6, the bolt members 37 attached to the plate members 23 and 29 are alternately screwed to the plate members 23 and 29, and the bolt members 37 attached to the plate members 25 and 33 are also connected to the plate members 25 and 29. 33 are alternately screwed. The bolt members 37 of the plate members 23 and 33 are arranged in the same vertical position, and the bolt members 37 of the plate members 25 and 29 are arranged in the same vertical position between them.

  Therefore, as shown in FIGS. 1 and 4, the chuck member 67 has the same vertical position as the chuck member 67 on the plate members 23 and 33 side, and the chuck member 67 on the plate members 25 and 29 side between these chuck members 67. 67 has the same vertical position. Then, the chuck members 67 on the plate members 23 and 33 side respectively hold the lower portions of the electrode terminals 101 and 103 shown in FIG. 16, and the chuck members 67 on the plate members 25 and 29 side of the adjacent electrode terminals 101 and 103 are respectively held. Each upper part is gripped.

  Next, the opening / closing structure of the chuck member 67 will be described.

  When the piston rod 13 expands as shown in FIG. 9 from the state of FIG. 5 in which the piston rod 13 of the air cylinder 3 is contracted, the first actuating member 15 attached thereto moves to the front of the base 1 shown in FIG. Then, the individual coil springs 44 wound around the respective bolt members 37 are contracted, and at the same time, the individual second actuating members 41 are moved to the front of the base 1 via the holding members 43 with the respective restoring forces. It has become.

  In this way, when the second operating member 41 moves forward, the plate members 51 and 53 also move in the same direction. Then, since the pair of left and right operation pins 63 moved forward as shown in FIG. 10 further spreads the rear end side of the metal plates 69 and 71, the chuck member 67 (metal plates 69 and 71) as shown in FIGS. The distal end side is closed so that the gripping member 73 can grip the electrode terminal.

  As described above, the chuck device 95 according to the present embodiment disposes the second actuating member 41 so as to be movable for each chuck member 67, and the coil spring 44 that biases each second actuating member 41 forward. Each of the two operating members 41 is mounted on the first operating member 14.

  Next, the operation of the chuck device 95 will be described.

  First, 32 secondary batteries 99 corresponding to the number of upper and lower 32 pairs of chuck members 67 are accommodated in the battery accommodating body 97 of FIG. 14 and arranged in front of the base 1 shown in FIG. At this time, the piston rod 13 is contracted so that the chuck members 67 (metal plates 69 and 71) are opened as shown in FIGS.

  Then, the battery housing body 97 is moved to the chuck device 95 side, and the electrode terminals 101 and 103 are placed one by one between the pair of gripping members 73 of the upper and lower chuck members 67 on the plate members 23 and 33 side as shown in FIG. Arrange. Similarly, the electrode terminals 101 and 103 are disposed one by one between the pair of gripping members 73 of the upper and lower chuck members 67 on the side of the adjacent plate members 25 and 29.

  Thereafter, when the piston rod 13 is extended as shown in FIG. 9, the first actuating member 15 moves to the front of the base 1. Then, each coil spring 44 wound around each bolt member 37 is individually contracted, and at the same time, the holding member 43 is pressed forward of the base 1 by the respective restoring force. The two actuating members 41 move to the front of the base 3.

  In this way, when the second operating member 41 moves forward, the plate members 51 and 53 also move in the same direction. Then, as shown in FIG. 10, the pair of operation pins 63 further pushes the rear end side of the metal plates 69 and 71 outward, and the front end sides of the metal plates 69 and 71 are closed as shown in FIGS. The pair of gripping members 73 of each chuck member 67 grips the electrode terminals.

  When the piston rod 13 is contracted, the first actuating member 15 moves rearward, so that the state shown in FIG. 5 is restored and each chuck member 67 is opened as shown in FIG.

  Thus, in this embodiment, since the structure of the chuck member 67 that opens and closes the pair of gripping members 73 with the pair of left and right metal plates 69 and 71, the gripping member 73 can be closed with a large force of the metal plates 69 and 71. .

  Therefore, according to the present embodiment, the chuck member for the electrode terminal is compared with the conventional example in which the chuck member composed of a set of two leaf springs expanded in a V shape is closed by a pair of rollers to grip the electrode terminal. It is possible to obtain a reliable gripping force of 67.

  Further, as described above, in the present embodiment, the second operating member 41 is mounted for each chuck member 67, and the coil spring 44 that presses and urges the individual second operating member 41 is provided with the second operating member. Each bolt 41 is wound around the bolt member 37 of the first actuating member 15.

  For this reason, conventionally, there has been a variation in the gripping force of the individual chuck members due to the inclination of the air cylinder and variations due to individual parts. However, as shown in FIG. The two actuating members 41 are individually moved to absorb the variation in gripping force.

  As a result, it is possible to secure a reliable gripping force of the chuck member 67 with respect to the electrode terminal as compared with the conventional case.

  In addition, even if a large number of secondary batteries having different electrode terminal thicknesses are stored in the battery storage body, the second actuating members 41 are individually moved by the biasing force of the individual coil springs 44 to absorb variations in thickness. A reliable gripping force of the chuck member 67 with respect to the electrode terminal can be obtained.

  Further, as shown in FIG. 4, the chuck member 67 on the side of the plate members 23 and 33 has the same vertical position, and the chuck member 67 on the side of the plate members 25 and 29 has the same vertical position between them. There is an advantage that the width dimension of 95 can be shortened and the size can be reduced.

  The above detailed description will clarify the features and advantages of the embodiments. This is intended to cover the features and advantages of the embodiments described above without departing from the spirit and scope of the claims. Further, any person having ordinary knowledge in the technical field should be able to easily come up with any improvements and changes, and there is no intention to limit the scope of the embodiments having the invention to those described above. It is also possible to rely on suitable improvements and equivalents included in the scope disclosed in.

1 ·· Base; 3 · Air cylinder; 11 ·· Support member; 15 ·· First actuating member; 17, 23, 25, 29, 33, 51, 53 ·· Plate member; 37 .. Bolt member; 39 .. Shaft portion; 41 .. Second actuating member; 43 .. Holding member; 44-Coil spring; 55, 57-Spacer; .. chuck member; 69, 71 .. metal plate; 73 .. gripping member; 75 .. gap; 79 .. grip body; 83. chip; 95. chuck device;・ Secondary batteries; 101, 103 ... Electrode terminals

Claims (4)

A plurality of chuck members for individually holding a pair of electrode terminals of a plurality of batteries arranged in parallel;
A first actuating member capable of moving back and forth by driving the driving means;
A plurality of second actuating members that are movably attached to the first actuating member corresponding to the plurality of chuck members, and that are closed forward by the first actuating member;
A spring member that is mounted between each second actuating member and the first actuating member corresponding to each second actuating member, and biases each second actuating member forward;
A chuck device characterized in that variation in gripping force of the chuck member with respect to the electrode terminal is eliminated by a spring force of the spring member with respect to the second operating member.   2. The chuck device according to claim 1, wherein the plurality of second operating members are movably attached to one first operating member corresponding to the plurality of chuck members. The chuck member has a pair of metal members that are pivotally supported with tip portions separated from each other, rear end portions separated from each other, and center portions overlapping each other;
A gripping member that attaches to the tip of the metal member,
The tip end is closed by an operation of opening the rear ends of the metal members by moving the second actuating member forward, and the electrode terminals of the battery are gripped by the pair of gripping members. Alternatively, the chuck device according to claim 2. The second actuating member is connected with an interval in the vertical direction, and a pair of plate members into which rear end portions of the pair of metal members of the chuck members are inserted, and
A holding member attached to the plate member and attached to the first actuating member;
An operation member that is attached between the plate members and spreads the rear end portions of the metal members to each other by the forward movement of the second actuating member;
The chuck device according to claim 3, further comprising:

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