JP3715226B2 - Storage battery terminal structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a terminal structure of a storage battery used for a sealed lead storage battery for a motorcycle.
[0002]
[Prior art]
A conventional terminal structure of a storage battery is known in Japanese Patent Laid-Open Nos. 7-320718 and 9-213302. In the former, a lead-out plate part drawn out from the pole column is bent downward into an L shape in a substantially rectangular notch part formed at the corner of the lid, and protruded from the bottom surface of the notch part The horizontal plate portion and the vertical plate portion of the L-shaped lead-out plate portion are attached to the top surface and the front side surface of the terminal support, and the nut is positioned at a position corresponding to the nut insertion groove formed on the top surface and the front side surface. It has an insertion hole, and the lower end of the vertical plate portion is inserted into a recessed portion provided on the bottom surface of the cutout portion, and an L-shaped cut is provided on one side surface of the nut insertion hole of the vertical plate portion and its side edge portion Is used as a stopper that locks to the upper edge of the nut insertion groove so that the lower end of the plate terminal does not come out of the recess, and the plate terminal does not move upward and is bolted. The invention which concerns on the terminal structure of the lead acid battery which prevented the deformation | transformation of this is disclosed.
The latter includes a substantially rectangular cutout formed in the corner of the lid, and a lead-out plate portion with one end pulled out from the pole column is bent downward into a U-shape on the one end side, and its upper surface A concave space is provided on the outer end, and the outer end side is bent upward in a U-shape so that the back surface space of the U-shaped bent plate portion serves as a nut housing space, and the horizontal plate portion of the U-shaped bent plate portion Bolt insertion holes are provided in the vertical plate part, and a horizontal lower plate part that is bent at a right angle inside the vertical plate part is fitted in a groove provided in the terminal support that protrudes from the bottom surface of the notch part. An invention relating to a terminal structure of a lead storage battery is disclosed in which a stop portion provided on at least one side of the groove is provided so that the plate terminal is not easily deformed by torque applied when bolting. ing.
[0003]
[Problems to be solved by the invention]
The former invention is a stopper in which an L-shaped notch is formed on one side of a bolt insertion hole provided in a vertical plate of a plate terminal, and one side edge of the vertical plate is bent and locked to the upper edge of a nut insertion groove Therefore, since the width of the vertical plate at the position of the bolt insertion hole is reduced and the resistance of the current flowing through the plate portion is increased, the external lead wire connected to the nut insertion hole by tightening the bolt and nut This causes the disadvantage that the current drawn is reduced. On the other hand, since the stopper engages only with the upper edge of the nut insertion groove, the vertical movement of the plate terminal cannot be reliably prevented.
In addition, in order to insert the lower end of the vertical plate portion of the plate terminal into the recessed portion of the cutout portion and to lock the stopper to the upper edge of the nut insertion groove provided on the lid side, the stopper and the lid side It is necessary that the positional relationship with the nut insertion groove is always constant, but in mass production, they are not necessarily constant, and they are misaligned with each other, and the stopper is not necessarily locked to the upper edge of the groove of the nut insertion hole. If this is not done, the inconvenience that the plate terminal cannot be assembled to the lid may be caused, resulting in production loss.
In the latter invention, the horizontal lower plate portion of the vertical plate portion of the plate terminal is merely fitted into the groove of the terminal support, so that the vertical torque is increased by the extremely large torque received when the bolt is inserted into the bolt insertion hole and tightened. There is a possibility that the horizontal lower plate portion of the plate portion is detached from the groove.
[0004]
[Means for Solving the Problems]
The present invention solves the above-described problems and provides a terminal structure for a storage battery that satisfies the above-described requirements. The plate terminal is composed of one end plate portion and a lead-out plate portion, and the one end plate portion is a storage battery. is connected to the pole, the derivation plate portion derived in the notch of substantially rectangular shape which is formed in the lid of the storage battery from the one end connected to plate on the pole is bent vertically downwards and a horizontal plate portion each bolt insertion hole is provided on the horizontal plate portion and the vertical plate portion is formed in a L-shape lead-out plate portion comprising a vertical plate portion, on the rear surface of each of the horizontal plate portion and the vertical plate portion In a terminal structure of a storage battery in which a plate terminal having a nut housing space is attached to the bottom surface of the notch portion of the lid, a free piece formed by a cut provided in a lower plate portion of the vertical plate portion of the plate terminal the folded inward to form the plate portion for locking,該切of the lid of the lower plate portion of the plate terminal Pressed into the fitting hole formed in the bottom surface of the parts, characterized in that allowed locking the locking plate portion on the rear face wall of fitting hole.
Furthermore, the present invention further provides a storage battery terminal structure that is stable and robust against external force, and is located on the lower plate portion of the vertical plate portion, below the locking plate portion, at least on the front and back surfaces thereof. It is characterized in that a tooth-like locking projection is provided on one surface and formed on the locking surface.
Furthermore, the present invention provides a storage battery terminal structure that is more stable and robust against external force, and is characterized in that serrated teeth are formed on both side edges of the lower plate portion of the vertical plate portion.
Furthermore, in addition to the above object, the present invention provides a storage battery terminal that can be screwed smoothly and efficiently without causing the nut to idle when the external terminal is screwed to the terminal plate of the present invention with a bolt and nut. Provide the structure, bend the upper and lower free pieces formed by H- shaped cut in the lower plate part located below the bolt insertion hole provided in the vertical plate part of the plate terminal, and lower by the lower free piece And a nut receiving / rotating plate portion is formed above the locking plate portion by an upper free piece .
Furthermore, the present invention provides an extremely strong and stable storage battery terminal structure in which the engagement of the lid of the plate terminal to the opposing wall surface of the fitting hole can be performed very well. It is characterized in that the ultrasonic vibration is applied to the tube and press-fitted.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
1 to 4 show an example of implementation of the present invention. In that embodiment, as the storage battery main body, for example, a1 and a1 are provided with the terminal structure of the present invention in which the plate terminal 1 connected to the upper ends of the positive and negative electrode poles of a sealed lead-acid battery main body for motorcycles is attached. It is. That is, the lead storage battery main body A is formed by airtightly bonding a rectangular box-shaped lid C to the upper surface of the battery case B containing the cells connected in series therein by heat sealing or the like. The lid C is formed by previously casting each lead bushing E at a position adjacent to substantially rectangular cutouts D, D formed in the left and right corners C1, C1 on one side of the storage battery body A. The positive and negative pole poles H standing upright from the positive and negative terminal straps G of the cell F accommodated in the left and right cell chambers of the battery case B are inserted into the lead pole insertion holes of the lead bushings E in a conventional manner. The upper end of each pole column H is projected to the outside of the lid C and welded by the outer lead bushing E and burner to form the respective positive and negative pole column terminals. plate terminal 1 of the invention, consists of a one plate portion 1a and the lead plate portion 1b, one end plate portion 1a of the plate terminal 1 welded to each該鉛bushing E, the cut-out portion D side thereof deriving plate portion 1b As will be described in detail below, the lead-out plate portion 1b is Attached to the bottom surface d1, is obtained by constituting the lead-acid battery positive, equipped with a terminal structure a1, a1 of the negative electrode of the present invention in corners C1, C1 1 side left and right battery body A.
[0006]
Thus, the left and right terminal structures a1 and a1 respectively disposed at the left and right corner portions C1 and C1 of the lid C of the storage battery of the present invention in the embodiment shown in FIGS. Hereinafter, one terminal structure a1 in the embodiment will be described in detail.
In the embodiment shown in FIGS. 1 to 4, FIG. 2 shows an exploded perspective view of the terminal structure a1 having one of the positive and negative polarities of the present invention shown in FIG. The plate terminal 1 of the present invention comprises a long rectangular metal plate having good conductivity, a tough and elastic metal plate having a thickness of about 2 to 2.5 mm and a width of about 12 mm, such as a metal plate made of brass. A circular hole 2 suitable for fitting to the lead bushing E is formed in the one end plate portion 1a. When the one end plate portion 1a is fitted to the lead bushing H, the lid 1 is opened from the one end plate portion 1a. The lead-out plate portion 1b led out to the cutout portion D is formed into an L-shaped lead-out plate portion 1b composed of a horizontal plate portion 1b1 and a vertical plate portion 1b2 by vertically bending the tip end downward. The horizontal plate portion 1b1 is provided with a bolt insertion hole 3 for upper tightening and a bolt insertion hole 4 for front fastening in the vertical plate portion 1b2, and nuts are accommodated on the back surface of the horizontal plate portion 1b1 and the back surface of the vertical plate portion 1b2. Space 5 was made to exist. The above configuration is the same as the configuration of the conventional plate terminal, but the plate terminal 1 of the present invention has a free piece formed by the cuts 6a and 6a provided in the lower plate portion 6 of the vertical plate portion 1b2. The plate terminal 1 is provided with a locking plate portion 7 that is bent inward. In the illustrated example, the locking plate portion 7 is formed by bending a free piece and projecting it at a right angle to the lower plate portion 6, that is, in a horizontal state, for example, about 0.5 mm.ゝ You may make it protrude in the upward state. The lower plate portion formed in advance on the bottom surface d1 of the notch D formed in the corner portion C1 of the lid C when the plate terminal 1 with the locking plate portion 7 is struck with a hammer or the like in this way. 6 is press-fitted into a recessed groove-like fitting hole 8 having a size suitable for press-fitting, and the locking plate portion 7 is locked to the rear facing wall surface 8b of the fitting hole 8 to thereby make the terminal structure a1 of the present invention. Configure.
The size of the fitting hole 8 is generally such that the rectangular opening has a thickness and a depth space substantially the same as the thickness and width of the lower plate portion 6, and the depth of the fitting hole 8 is determined by the lower plate portion 6. Is formed into a flat rectangular shape having such a depth that the locking plate portion 7 can be locked to the rear facing wall surface 8b.
In press-fitting the lower plate portion 6, it is preferable to press-fit the lower plate portion 6 in a heated state. For example, the lower plate portion 6 is heated by a desired heater, or an ultrasonic wave is applied to the lower plate portion 6 while being press-fitted.
[0007]
In the illustrated embodiment, as shown in FIG. 2, the plate terminal 1 is gripped by a pair of openable and closable grippers 9a, 9a indicated by phantom lines connected to an ultrasonic generator (not shown), When press-fitting into the fitting hole 8 while applying ultrasonic vibration, the inner peripheral side wall surface of the fitting hole 8 is softened by the generated heat due to the ultrasonic vibration applied to the lower plate portion 6. Therefore, not only the press-fitting operation is easily performed, but also the locking plate portion 7 is firmly locked in the embedded state on the rear facing wall surface 8b as shown in FIG. A terminal structure a1 of the present invention is obtained. For example, the ultrasonic vibration imparts a vertical vibration of 20 KHz to the lower plate portion 6.
[0008]
Thus, according to the terminal structure a1 of the present invention, the lower terminal portion 6 of the vertical terminal portion 1b2 of the plate terminal 1 is press-fitted and locked in the fitting hole 8 on the upper surface of the lid C as described above. Therefore, when an external connection terminal (not shown) is connected to the plate terminal 1 by fastening with bolts or nuts by pre-tightening or top-tightening, for example, in the case of pre-tightening, the horizontal plate portion of the plate terminal 1 A bolt I is inserted into a bolt insertion hole 3 provided in 1b1 or a bolt insertion hole 4 provided in the vertical plate portion 1b2, and screwed into a nut J inserted into a corresponding nut receiving space 5 on the back side. Even if the plate terminal 1 receives a large torque that is sometimes generated, the plate terminal 1 is reliably prevented from rotating, twisting, and deforming in the horizontal direction. In particular, the plate terminal 1 according to the present invention has the locking plate portion 7 protruding from the lower plate portion 6 locked on the opposing wall surface 8b, and therefore, particularly the resistance to an upward external force is increased. The pull-out prevention effect is remarkably improved, resulting in a very stable and robust terminal structure a1. According to the comparative test, in the case where the lower end of the vertical plate portion of the conventional plate terminal is horizontally bent inwardly and fitted into a concave groove provided in front of the lower portion of the terminal support of the notch portion of the lid, For example, at the time of upper tightening, the lower end is detached from the concave groove with a tightening force of 110 kgfcm, and the plate terminal is twisted. However, in the terminal structure a1 of the present invention, there is no deformation up to 180 kgfcm. It was.
[0009]
Furthermore, according to the present invention, in addition to the locking plate portion 7 that is bent backward on the lower plate portion 6 of the plate terminal 1 as described above, a plurality of pieces are provided on both side edges of the lower plate portion 6. It is preferable to provide jagged teeth (hereinafter abbreviated as jagged teeth) consisting of arrows and saw teeth, and / or a locking surface 7 " on at least one of the front and rear surfaces thereof, whereby a more stable and robust storage battery. The terminal structure can be provided.
It will be described with reference to FIGS. 5 to 7 the second embodiment has the preferred. FIG. 5 is a perspective view of one example of the plate terminal 1 ′, and FIG. 6 is an assembly in which the plate terminal 1 ′ is press-fitted into a fitting hole provided in the bottom surface of a notch portion of the lid of a similar storage battery. FIG. 7 is a sectional view similar to FIG. 2 of the preferred terminal structure a1 ′, and FIG. 7 is a sectional view taken along line VII-VII in FIG.
The lower plate portion 6 of the plate terminal 1 'has a jagged tooth formed by engraving teeth 7a' having the same unidirectionality as arrowheads and saw teeth on three sides in the vertical direction on both side edges. Teeth 7a ″ which are engraved with teeth (abbreviated as serrated teeth) and have a longitudinal direction extending in the width direction over the entire width of each of the front and back surfaces and the same unidirectionality as the arrowhead and saw teeth. Are provided with a locking surface 7 ″ made of serrated teeth as a whole. The locking protrusions 7a ″, 7a ″, 7a ″ are formed in three stages in the vertical direction. The shape of is not limited to the above-mentioned tooth shape, and projections of a desired shape such as a small pyramid shape and a prism shape projecting from the front and back surfaces of the lower plate portion 6 are disposed on the entire surface in a regulated or irregular manner. Of course, you may make it do.
[0010]
On the other hand, as shown in FIGS. 6 and 7, the fitting hole 8 ′ into which the lower plate portion 6 of the plate terminal 1 ′ is press-fitted has a lower end portion of the lower plate portion 6 in the fitting hole 8 ′. In order to facilitate insertion, the inner surface of the four circumferential walls is tapered from the upper end surface of the rectangular opening to an appropriate depth, and the width dimension is as shown in FIG. The width between the teeth 7a ', 7a',... Of the serrated teeth 7 ', 7' is substantially the same as the width between them, and the depth dimension thereof is the relationship formed on the front and back surfaces of the lower plate portion 6 as shown in FIG. It is smaller than the width between the locking projections 7a ", 7a", 7a "and 7a", 7a ", 7a" of the stop surfaces 7 ", 7", and the lower plate 6 is press-fitted in the above-mentioned heating state. After that, the locking protrusions 7a ", 7a", ... of the locking surfaces 7 ", 7" on the front and back sides are locked in a state where they are embedded in the opposing wall surfaces 8a, 8b. Dimensions It is obtained by pre-formed. Thus, when press-fitting the lower plate portion 6 of the plate terminal 1 ′, when it is press-fitted in a heated state, the four-side inner wall surface of the fitting hole 8 is softened, so that as shown in FIGS. 6 and 7, The locking plate portion 7 formed by bending the lower plate portion 6 is not only locked in an embedded state on the upper portion of the rear facing wall surface 8b, but also has a tooth-like locking projection 7a ″ disposed on the front and back surfaces thereof. , 7a ", ... front and rear faces wall 8a, is locked by entering a state embedded in 8b, further Giza teeth 7 of both side edges', 7 'each tooth 7a' of firmly to the opposite wall 8 c, 8 d of the right and left Thus, the storage battery terminal structure a1 ′ of the present invention is obtained which is extremely stable and robust against an external force in a state where the battery is locked. According to the comparative test, in the case of the front tightening, in the conventional terminal structure, the plate terminal is detached from the groove at 70 Kgfcm, and the plate terminal is torsionally deformed. However, in the terminal structure a1 ′ of the present invention, the terminal structure is deformed to 160 Kgfcm. There was no.
[0011]
In addition, before press-fitting the plate terminal of the present invention into the fitting hole, a small amount of an adhesive such as epoxy resin is injected into the bottom of the fitting hole in advance, and then the plate terminal is press-fitted. At least the lower end may be bonded and fixed to the bottom surface of the fitting hole via the adhesive, and the locking and fixing state with the lid may be further strengthened. In the preferred embodiment, as shown in FIGS. 6 and 7, the adhesive 10 is injected and fixed. In this case, the upper tightening of the terminal structure a1 ′ was not deformed to about 180 Kgfcm, and the front tightening was not deformed to about 160 Kgfcm, and a more stable and robust terminal structure was obtained.
[0012]
In addition, in providing the locking plate portion 7 by bending the free portion provided by the notch 6a in the lower plate portion of the plate terminal according to the present invention, at the same time, at a predetermined position above the locking plate portion 7, You may make it comprise in the board terminal which provided the board | plate part for nut receiving and rotation prevention preventing which protruded horizontally and bent back.
In the first and second embodiments, as shown in the drawing, the plate terminal 1 or 1 ′ is provided with the nut receiving and anti-rotation plate portion 11 together with the locking plate portion 7. In addition to this, the lower plate 6 is provided with an H-shaped cut, and a relatively long upper free piece and a relatively short lower free piece formed on the upper and lower sides thereof are horizontally bent inward at predetermined positions, respectively. 4 and FIG. 6, the upper surface of the upper free piece acts as a receiving surface of the nut J, and the nut J is connected to the lower surface of the horizontal plate portion 1b1 of the plate terminals 1 and 1 ′. Is formed on the plate portion 11 acting as a nut detent at a position where the nut accommodating space 5 suitable for sandwiching the upper and lower flat surfaces is held, and the lower free piece is bent inward as described above and locked. The plate portion 7 was formed. Thus, when an external terminal (not shown) is tightened and connected to the front surface of the plate terminals 1 and 1 ′, the bolt I is inserted into the bolt insertion hole 4 on the front surface and accommodated in the nut accommodating space 5 on the front side. In the operation of twisting and tightening the external terminal to the nut J , the nut J can perform the screwing connection operation smoothly and quickly without being idle.
[0013]
Site The plate terminal 1 or 1 'in the figures, respectively, if desired, a portion of the horizontal plate portion 1b1 of that L-shaped lead plate portion 1b, that Tsurana one end plate portion 1a in the rear side of its the as illustrated, downwardly allowed bent in a U-shape, is formed in a U-shaped bent plate portion 1c of the lower facing, an upper surface on the outer surface thereof is open, U-shaped capable of inserting a motorcycle anode terminal cover of forming a concave space 12, as a whole, may be formed on the rear side L-shaped-shaped plate portion 1b formed in a downward U-shaped bent plate portion 1c of. In the drawings, 1c1 indicates a vertical plate portion on the front side of the U-shaped bent plate portion 1c. On the other hand, the bottom surface d1 of the cutout portion D of the lid C, provided with a support protrusion 13 which is now projected, the front upper surface to the support surface 13 a that supports the nut receiving and detent plate 11 of the from the lower surface The upper surface 3b opposite to the plate terminal is formed on a receiving surface 13b of a nut corresponding to tightening with a bolt inserted from the bolt insertion hole 3 for upper tightening, and the vertical wall surface 13c on the back surface of the support protrusion 13 is formed. And an accommodation space 14 having a width suitable for fitting and inserting the downward U-shaped bent plate portion 1c between the vertical wall surface 13c and the vertical wall surface d2 on the side where the pole column H is present. The downward U-shaped bent plate portion 1c can be fitted and mounted in the accommodation space 14 . In addition, it is preferable to form the recessed part 15 which accommodates the front-end | tip part of the volt | bolt I screwed in from the upper direction and the front in the intermediate part of this support body protrusion 13. FIG.
In the drawings, 16a and 16b are guide walls for guiding the lower plate portion 6 of the vertical terminal portion 1b2 of the plate terminal 1 or 1 ' when pressed into the fitting hole 8 or 8' , and 17 is the upper end of the pole column H. The cover plate given to the fitting groove 18 which surrounds a part by heat sealing is shown.
[0014]
【The invention's effect】
Thus, according to the first aspect of the invention, the conventional terminal structure is improved, and a terminal structure for a storage battery that is more stable and strong against external force can be obtained. According to the fifth aspect, the press-fitting operation of the plate terminal into the fitting hole of the lid is easy, and the locked state is obtained extremely firmly, and a more stable and robust terminal structure is obtained.
[Brief description of the drawings]
FIG. 1 is a perspective view of a storage battery having a terminal structure according to an embodiment of the present invention.
2 is an exploded perspective view of a terminal structure having one polarity of FIG. 1. FIG.
3 is an assembled perspective view of the assembled state of FIG. 2. FIG.
4 is a sectional view taken along line IV-IV in FIG. 3;
FIG. 5 is a perspective view of a modified board terminal used in the present invention.
6 is a cross-sectional view similar to FIG. 4 of a terminal structure configured using the plate terminal shown in FIG.
7 is a sectional view taken along line VII-VII in FIG.
[Explanation of symbols]
A Storage battery body C Cover C1 Corner portion D Notch portion d1 Bottom surface E Lead bushing H Pole column 1, 1 'Plate terminal 1a Plate terminal end plate portion 1b Plate terminal lead-out plate portion 1b1 Horizontal plate portion 1b2 Vertical plate portion a1, a1 ′ terminal structure 2, 3, 4 bolt insertion hole 6 lower plate portion 6a of plate terminal notch 7 locking plate portion 7a ″ locking projection, tooth-like locking projection 7 ″ locking surface 7 ′ serrated tooth 8, 8 'Fitting hole 8a Front facing wall surface 8b Rear facing wall surface 8c Left facing wall surface 8d Right facing wall surface 10 Adhesive 11 Nut receiving / rotating plate portion

Claims (5)

Plate terminal 1 is composed of an end plate 1a and the lead plate portion 1b, the end plate portion 1a is connected to the terminal post H battery, the lid C of the battery from the end plate portion 1a connected to the pole column H the derivation plate portion 1b which is led to the notch D of the formed substantially rectangular shape is formed in an L-shape lead-out plate portion 1b made of bent vertically downwards and a horizontal plate portion 1b1 vertical plate portion 1b2 Prefecture in Rutotomoni horizontal plate portion 1b1 and the vertical plate portion 1b2 and the respective bolt insertion holes 3 and 4 are provided, and allowed presence nut accommodating space 5 on the back surface of each of the horizontal plate portion 1b1 and the vertical plate portion 1b2 the plate terminal 1 comprising forming, in the terminal structure of the storage battery formed by attaching the bottom surface d1 of the cutout portion D of the lid C, cuts 6a provided in the lower plate portion 6 of the vertical plate portion 1b2 of the plate terminal 1, the 6a folding the the free pieces inwardly formed in the locking plate portion 7, the plate terminal Locking the lower plate portion 6 of the press-fitted into the fitting hole 8 provided on the bottom surface d1 of the cutout portion D of the lid C, and the engaging plate part 7 in the rear face wall 8b of the fitting hole 8 A terminal structure of a storage battery, characterized by being damped. The lower plate portion 6 of the vertical plate portion 1b2 is positioned below the locking plate portion 7 and is provided with a tooth-like locking projection 7a ″ on at least one side of the front and back surfaces thereof. The terminal structure of a storage battery according to claim 1, wherein the terminal structure is 7 ″ . The terminal structure of the storage battery according to claim 1 or 2, wherein serrated teeth ( 7 ') are formed on both side edges of the lower plate portion ( 6) of the vertical plate portion ( 1b2 ). The upper and lower free pieces 7 and 11 formed by the H- shaped cuts 6a and 6a are bent inwardly in the lower plate portion 6 located below the bolt insertion hole 4 provided in the vertical plate portion 1b2 of the plate terminal 1 to release the lower portion. terminal structure of the battery according to the locking plate part 7 in the lower one of claims 1 to 3, characterized in that the formation of the nut receiving and detent plate 11 to the upper by the upper free piece by piece . The terminal structure of the storage battery according to any one of claims 1 to 4, wherein the plate terminal 1 is press-fitted while applying ultrasonic vibration.

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