JP2003142072A - Terminal structure of storage battery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a terminal structure of a storage battery capable of preventing inconvenience such as tilt, turn, twist, deformation or floating of a plate terminal by large tightening torque when an external lead wire is tightened to the terminal of a terminal structure composed by fixing, to the upper face of a cover of the storage battery, a lead-out plate part of the plate terminal with its one-end plate part connected to an electrode post projected on the outer face of the cover of the storage battery, and stable and strong against the tightening torque. SOLUTION: This terminal structure is composed by mounting a plate terminal 1 comprising the one-end plate part 1a connected to an electrode post H of the storage battery and the lead-out plate part 1b led out to a cut-out part D of the cover C from the electrode post H and composed by shaping the plate part 1b into a horizontal plate part 1b1 having a bolt insertion hole 3 and a vertical plate part 1b2 vertically bent downward in a reversed L-shaped form and having a bolt insertion hole 4 to the bottom face d1 of the cut-out part D of the cover by the plate part 1b2. A locking surface 7 is formed by disposing a plurality of locking projections 7a on at least one of the front and back surfaces of a lower plate part 6 of the plate part 1b2, the plate part 6 is pressed into a fitting hole 8 formed in the cover C, and the locking projections 7a, 7a of the locking surface 7 are locked to wall surfaces 8a and 8b opposite to them.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a storage battery terminal structure used for a motorcycle sealed lead storage battery or the like.

[0002]

2. Description of the Related Art A terminal structure of a conventional storage battery is disclosed in Japanese Patent Application Laid-Open No. 7-
It is known in Japanese Patent Laid-Open No. 320718, Japanese Patent Laid-Open No. 9-213302, and the like. In the former case, a guide plate whose one end is pulled out from a pole is bent downward into an inverted L-shape in a substantially rectangular notch formed in a corner of the lid, and the lead plate is projected from the bottom of the notch. 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 body at positions corresponding to the nut insertion grooves formed on the top surface and the front side surface. It has a nut insertion hole, and the lower end of the vertical plate portion is inserted into a recess formed in 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. Bend the part inward and use it as a stopper that locks to the upper edge of the nut insertion groove,
Thus, the invention relating to the terminal structure of the lead storage battery is disclosed in which the lower end of the plate terminal is prevented from coming out of the recessed portion, the plate terminal is prevented from moving upward, and the deformation when bolted is prevented. is doing. The latter has a substantially rectangular parallelepiped notch formed in the corner of the lid, and the lead-out plate part with one end pulled out from the pole is bent downward on one end side in a U shape and its upper surface. A concave space is provided in the U-shaped bent plate portion, and the outer end side thereof is bent upward in a U-shape so that the rear surface space of the U-shaped bent plate portion serves as a nut accommodating space, and the horizontal plate portion of the U-shaped bent plate portion is formed. And a bolt insertion hole in the vertical plate part, and a horizontal lower plate part in which the lower plate part of the vertical plate part is bent inward at a right angle is fitted into the groove provided in the terminal support body protruding from the bottom surface of the cutout part. Disclosed is an invention relating to a terminal structure of a lead storage battery in which a stopper provided on at least one side of the groove is provided to prevent the plate terminal from being easily deformed by a torque applied when bolted. ing.

[0003]

SUMMARY OF THE INVENTION In the former invention, an L-shaped notch is provided on one side of a bolt insertion hole formed in a vertical plate of a plate terminal, and one side edge of the vertical plate is bent to form a nut insertion groove. Since the stopper is locked to the upper edge of the bolt insertion hole, 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. This causes a disadvantage that a current drawn to an external lead wire connected by tightening is reduced. On the other hand, since the stopper engages only with the upper edge of the nut insertion groove, it is impossible to reliably prevent the vertical movement of the plate terminal. In addition to this, in order to insert the lower end of the vertical plate portion of the plate terminal into the recess of the notch and to lock the stopper with the upper edge of the nut insertion groove provided on the lid side, the stopper and the lid side The positional relationship between the nut insertion groove and the nut insertion groove must always be constant, but they do not always remain the same in mass production, causing positional deviations, and the stopper does not necessarily lock properly on the upper edge of the nut insertion hole groove. Otherwise, it may not be possible to assemble the plate terminal to the lid, resulting in a production loss. In the latter invention, the horizontal lower plate part of the vertical plate part of the plate terminal is merely fitted into the groove of the terminal support, so that the vertical torque of the vertical plate part is increased by the extremely large torque received when the bolt is inserted into the bolt insertion hole and tightened. The horizontal lower plate portion of the plate portion may be separated from the groove. In order to solve the above-mentioned conventional inconvenience and solve the problem, the Japanese Patent Application No.
With 1-045093, it is easily and surely attached to the lid in a stable and stable manner, is easy to manufacture, and securely prevents deformation such as twisting of the plate terminal due to torque that occurs when bolting without manufacturing loss, and takes it out to the outside. Provided is a storage battery terminal structure capable of increasing the obtained current.
As shown in FIG. 7, the terminal structure is such that a plate terminal is provided with serrated teeth 7 ', 7'on both side edges of the lower plate portion 6'of the vertical plate portion 1b2'.
A plate terminal 1 ′ is formed by carving the lower terminal 6 ′ of the plate terminal 1 ′ into a fitting hole (not shown) provided on the bottom surface of the notch of the lid, and both sides thereof are press-fitted. A terminal structure for a storage battery is provided, in which serrated teeth 7 ', 7'at the edges are locked to the opposing wall surfaces of the fitting hole. However, the development of a more stable and robust battery terminal structure is desired.

[0004]

DISCLOSURE OF THE INVENTION The present invention provides a terminal structure for a storage battery, which solves the above-mentioned problems and satisfies the above-mentioned needs, wherein one end plate is connected to a pole of the storage battery.
The lead-out plate portion led out from the pole to a substantially rectangular notch formed in the lid of the storage battery is formed as an L-shaped lead-out plate portion which is vertically bent downward, and the horizontal plate portion and the vertical plate portion. A plate terminal, which is provided with a bolt insertion hole in each of the plate portion and has a nut accommodating space on the back surface of each of the horizontal plate portion and the vertical plate portion, is attached to the bottom surface of the cutout portion of the lid. In the storage battery terminal structure, the plate terminal is provided with a locking surface formed by disposing a plurality of locking projections on at least one surface of the lower plate portion of the vertical plate portion. A terminal, the lower plate portion of the plate terminal is press-fitted into a fitting hole provided in the bottom surface of the cutout portion, and a locking projection provided on the locking surface is opposed to the fitting hole. It is characterized by being locked on the wall. Furthermore, the present invention provides a more stable and robust terminal structure for a storage battery, in which both side edges of the lower plate portion of the vertical plate portion are provided with serrated teeth that are engaged with the opposing wall surfaces of the fitting hole. Characterize.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings. 1 to 4 show an embodiment of the present invention. In the embodiment, as the storage battery main body, for example, the terminal structure of the present invention in which the plate terminal 1 connected to the upper ends of the positive and negative pole poles of the sealed lead storage battery main body for a motorcycle is attached to a1 and a1 Is. That is,
The lead-acid battery main body A is formed by airtightly bonding a rectangular box-shaped lid C to the upper surface of a battery case B accommodating cells connected in series inside by heat sealing or the like. The lid C is formed by casting the respective lead bushings E in advance at positions adjacent to the substantially rectangular notches D and D formed in the left and right corners C1 and C1 on one side of the storage battery main body A. Then, in the lead column insertion hole of each lead bushing E, the positive and negative pole columns H standing upright from the positive and negative electrode terminal straps G of the cells F housed in the left and right cell chambers of the battery case B are formed by a conventional method. It is inserted, and the upper end of each pole H is projected to the outside of the lid C and is welded by the lead bushing E and the burner on the outer circumference to form the positive and negative pole pole terminals, respectively. In the plate terminal 1 of the invention, one end plate portion 1a is provided with each lead bushing E.
Welded to the cutout portion D, and the lead-out plate portion 1b is attached to the bottom surface d1 of the cutout portion D as described in detail below, and the left and right corners C1 and C1 of the storage battery body A on one side. In addition, a lead-acid battery including the positive and negative electrode terminal structures a1 and a1 of the present invention is configured.

Thus, the left and right terminal structures a1 and a1 respectively arranged at the left and right corners C1 and C1 of the lid C of the storage battery of the present invention in the embodiments shown in FIGS. Therefore, the following is 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 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 thin and strong metal plate having a thickness of about 2 to 2.5 mm and having elasticity, for example, a metal plate made of brass. A circular hole 2 suitable for fitting to the lead bushing E is formed in the portion 1a, and when the one end plate portion 1a is fitted to the lead bushing H, it is led out to the cutout portion D of the lid 1. The lead-out plate portion 1b has an L-shaped lead-out plate portion 1b which is vertically bent downward at its tip side, and the bolt insertion hole 3 and its vertical plate portion 1b2 are formed in the horizontal plate portion 1b1.
A bolt insertion hole 4 is provided on the back side of the horizontal plate portion 1b1 and a rear surface of the vertical plate portion 1b2 so that the nut receiving space 5 is present. Although the above configuration is the same as the configuration of the conventional plate terminal, the plate terminal 1 of the present invention has the vertical plate portion 1
At least one of the front and back surfaces of the lower plate 6 of the b2 is provided with a plurality of locking projections to form a plate terminal formed on the locking surface. In the illustrated preferred embodiment, a plurality of locking projections 7a are provided on the front and back surfaces of the lower plate portion 6 to form the locking surfaces 7 and 7, respectively. The shape of the locking projections 7a is arbitrary, but in the example shown in the drawing, the unidirectionality is formed in the same manner as the arrowheads and saw teeth extending in the width direction over the entire width of each surface on both the front and back surfaces of the lower plate portion 6. Three teeth 7a are vertically provided, that is, three locking projections 7A and 7a are formed on the locking surface 7 that is formed by serrated teeth (hereinafter referred to as serrated teeth) as a whole. Each locking projection is not limited to the tooth shape described above, but a small pyramid shape protruding from the front and back surfaces of the lower plate portion 6,
Needless to say, projections such as prismatic shapes may be arranged on the entire surface in a regulated or irregular manner. In the illustrated embodiment, the bottom surface 6 of the notch D formed in the corner portion C1 of the lid C is provided with the lower plate portion 6 with serrated teeth formed on the locking surfaces 7 and 7 in this manner. The lower plate portion 6 formed in d1 is press-fitted into the recessed groove-shaped fitting hole 8 having a size suitable for press-fitting. Generally, the size of the fitting hole 8 is such that the rectangular opening has a thickness and width space that are the same or substantially the same as the thickness and width of the lower plate portion 6, and the depth thereof is notched. A part or all (all in the illustrated example) of the teeth 7, 7 are formed to have a depth that can be obtained. The lower plate portion 6 is press-fit into the recessed groove-shaped fitting hole 8 by hitting the upper surface of the horizontal plate portion 1b1 with a hammer or the like, and the locking surfaces 7 and 7 on the front and back sides thereof.
Each of the teeth 7a, 7a, 7a and the teeth 7a, 7a, 7a are respectively locked to the opposing wall surfaces 8a, 8b in front of and behind the fitting hole 8 which constitutes the terminal structure a1 of the storage battery of the present invention.

Thus, according to the terminal structure a1 of the present invention, in the plate terminal 1, the lower plate portion 6 of the vertical plate portion 1b2 is
Since it is press-fitted and locked in the fitting hole 8 on the upper surface of the lid C,
When a connection terminal from the outside is tightened and bound to the plate terminal 1 with a bolt and a nut, the horizontal plate portion 1b1 of the plate terminal 1 is connected.
The bolt I is inserted into the bolt insertion hole 3 provided in the vertical plate portion 1b2 or the bolt insertion hole 4 provided in the vertical plate portion 1b2, and is screwed into the nut J inserted into the corresponding nut accommodation space 5 on the back side thereof. Even if the plate terminal 1 receives a large torque generated in the above, the horizontal rotation, twist, deformation, etc. of the plate terminal 1 are reliably prevented. In particular, the plate terminal 1 of the present invention is
Since the lower plate portion 6 is engaged with the facing wall surface by the serrated teeth 7 formed by disposing tooth-shaped engaging projections 7a, 7a, 7a which extend in the width direction of the front and back surfaces having a wide area, The locking force is remarkably increased as compared with the case of locking to the opposing wall by the serrated teeth 7 ′ formed on both side edges having almost no thickness shown in FIG. 7 disclosed in the prior application, and in particular, an upward external force is applied. The resistance against the magnetic field is increased, in particular, the pull-out prevention effect is significantly increased, resulting in a very stable and robust terminal structure a1.

If desired, the plate terminal 1 is formed by bending a portion adjacent to the one end plate portion 1a on the rear side of the horizontal plate portion 1b1 downward in a U-shape, as shown in the drawing. -Shaped bent plate portion 1c, the outer surface of which has a U-shaped recessed space 9 into which an upper surface is opened and into which an anode terminal cover of a motorcycle can be inserted, and the rear side of which faces downward as a whole. It may be formed on the L-shaped lead-out plate 1b formed on the portion 1c. Correspondingly, the notch D is projected from the bottom surface d1 and the front surface and the top surface are provided with the nut receiving surface 1
Vertical wall surface 1 on the back surface of the support protrusion 10 which is 0a, 10b
0c and the vertical wall surface d2 facing the vertical wall surface 10c and on the side on which the pole H exists, the downward bent U-shaped bent plate portion 1
The downwardly facing U-shaped bent plate portion 1c can be fitted and mounted in the accommodation space 11 that has the accommodation space 11 having a width suitable for inserting and inserting c. The support protrusion 1
In the middle part of 0, a bolt I screwed from above and from the front
It is preferable to form the recessed portion 12 that accommodates the tip portion of the. In the drawing, 13a and 13b are vertical plate portions 1b of the plate terminal 1.
A guide wall that guides the lower plate portion 2 of 2 when press-fitting it into the fitting hole 8 is a lid plate that is heat-sealed in a fitting groove 15 that surrounds the upper end of the pole H.

FIG. 5 shows a modification 1 "of a plate terminal which is a constituent element of the terminal structure of the storage battery of another embodiment of the present invention in place of the plate terminal used in the previous embodiment. The plate terminal 1" Is provided on the right and left sides of the vertical plate 1b2 in addition to the locking surfaces 7 and 7 made of serrated teeth in which tooth-shaped locking projections 7a, 7a, 7a are arranged on both front and back surfaces of the lower plate 6. Same serrated teeth 7'as in Fig. 7, which are press-fitted to the opposite wall surfaces of the right and left of the predetermined fitting holes on both side edges,
It is a carved 7 '. The other components of the plate terminal 1 "are the same as those in the previous embodiment, and are therefore designated by the same reference numerals. Therefore, although not shown, the plate terminal 1" is provided with a recess in the lid. When press-fitting the plate terminal 1 ″ into a fitting hole suitable for press-fitting, the respective locking protrusions 7a, 7a, 7c disposed on the locking surfaces 7, 7 formed on the front and back surfaces of the plate terminal 1, 7
By locking a and 7a to the front and rear facing wall surfaces of the fitting hole and simultaneously locking serrated teeth 7'and 7'on both side edges of the fitting hole to the left and right facing wall surfaces of the fitting hole, a further firmness is achieved. A stable and strong terminal structure can be obtained.

The plate terminal 1 of the present invention shown in FIG. 1, the plate terminal 1 "of the present invention shown in FIG. 5 and the plate terminal 1'disclosed in the prior application shown in FIG. After making a large number of terminal structures that are press-fitted and locked and fixed by their respective serrated teeth, respectively, to configure the terminal structure of each storage battery, apply an upward pulling force to each plate terminal, and The tensile forces at the moment of being pulled out from the holes were measured respectively, and the results are as shown in Fig. 6. That is, the tensile force in the above tensile test A for the plate terminal 1'of the prior application was set to 100%. When the figure 1
The tensile force in the tensile test B for the plate terminal 1 of the present invention shown in Fig. 3 is increased to about 103 to 110%, and the tensile test C for the plate terminal 1 "of the present invention shown in Fig. 5 is increased to about 107 to 116%. Was confirmed.

When pressing the plate terminal of the present invention into the fitting hole, the plate terminal may be mechanically pressed as it is.
Preferably, for locking the lower plate portion of the heating object, the plate terminal is heated and press-fitted in a heated state, or by pressurizing the plate terminal in a heated state in which heat is generated by applying ultrasonic waves to the plate terminal. Since the opposing wall surfaces of the fitting hole that are brought into contact with the locking projections provided on the front and back surfaces are slightly softened by the heat,
Although each locking projection depends on the size of the width and thickness space of the fitting hole, at least the tip portion is locked and fixed in a state of being embedded in the wall surface, so that the tensile force is further increased. However, it is possible to obtain a stable and robust terminal structure that is stronger against twisting and the like. It is needless to say that, even when serrated teeth are formed on both side edges of the lower plate portion, similarly, the lower plate portion is locked and fixed in the opposite wall surface in a buried state.

[0012]

As described above, according to the inventions according to claims 1 and 2, it is possible to obtain an improved storage battery terminal structure that is more stable.

[Brief description of drawings]

FIG. 1 is a perspective view of a storage battery having a terminal structure according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the terminal structure having one polarity shown in FIG.

3 is an assembled perspective view of the assembled state of FIG. 2. FIG.

FIG. 4 is a sectional view taken along line IV-IV of FIG.

FIG. 5 is a perspective view of a modified plate terminal used in the present invention.

FIG. 6 is a graph showing excellent tensile force of a terminal structure using the plate terminal of the present invention.

FIG. 7 is a perspective view of a plate terminal which is a component of the plate terminal structure of the prior application.

[Explanation of symbols]

A battery body C lid C1 corner D notch d1 bottom E Lead bushing H pole 1 board terminal 1a One end plate part of plate terminal 1b Lead-out plate part of plate terminal 1b1 Horizontal plate part 1b2 Vertical plate part a1 terminal structure 2, 3, 4 bolt insertion hole 6 Lower part of plate terminal 7 Locking surface, serrated teeth 7a Locking protrusion 8 fitting holes 8a facing inside 8b facing inside

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 5H022 AA02 BB03 CC04 CC05 CC10                       CC13

Claims (2)

[Claims] 1. An end plate portion is connected to a pole of a storage battery, and a lead-out plate portion led out from the pole pillar to a substantially rectangular notch formed in a lid of the storage battery is vertically bent downward.
The horizontal plate part and the vertical plate part are provided with bolt insertion holes formed in the character-shaped lead-out plate part, and the nut receiving spaces are provided on the respective back surfaces of the horizontal plate part and the vertical plate part. In a terminal structure of a storage battery, in which a plate terminal formed by attaching the plate terminal to the bottom surface of the cutout portion of the lid, a plurality of the plate terminals are provided on at least one surface of the front and back surfaces of the lower plate portion of the vertical plate portion. A plate terminal having a locking surface formed by arranging a protrusion is formed, and the lower plate portion of the plate terminal is press-fitted into a fitting hole provided in the bottom surface of the cutout portion to lock the plate terminal. A terminal structure for a storage battery, characterized in that a locking projection disposed on the surface is locked to a wall surface facing the fitting hole. 2. The terminal structure for a storage battery according to claim 1, wherein serrated teeth that engage with opposite wall surfaces of the fitting hole are formed on both side edges of the lower plate portion of the vertical plate portion.