JP2013008609A - Resin-enclosed terminal for lead battery, manufacturing method of resin wound terminal for lead battery, lead battery having resin-enclosed terminal and vehicle mounted with lead battery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a resin-enclosed terminal for lead battery to which a nut can be easily and reliably fixed, a manufacturing method of the terminal and a lead battery having the terminal.SOLUTION: A resin-enclosed terminal 7 for a lead battery includes: a terminal 1 of a rectangular parallelepiped shape which has a cavity 1a and insertion port 1b into which a nut 6 of a rectangular parallelepiped shape is inserted, and bolt insertion holes 1c and 1d (located at the opposite side of a side wall 1e), which are formed on the top and a side wall; an electrode pole 2 connected to the terminal 1 at the bottom thereof; and a resin part enclosing the peripheral surface of the electrode pole 2. A nut 6 having a screw hole 6a and/or 6b (located at the opposite side of a side wall 1e), which is/are threaded from the top to the bottom and/or from the front face to the rear face of the nut 6, is inserted into a cavity 1a of the terminal 1 so that the screw hole 6a and/or 6b communicate(s) with the bolt insertion hole(s) 1c and/or 1d. The nut 6 is fixed by the deformed bottom portion 1h of the terminal 1 located at the bottom of the cavity 1a.

Description

  The present invention relates to a resin wound terminal for a lead storage battery, a method for manufacturing a resin wound terminal for a lead storage battery, a lead storage battery including the resin wound terminal, and an automobile equipped with the lead storage battery.

Resin-wrapped terminals are often used for terminal structures of lead-acid batteries for motorcycles.
As a conventional resin winding terminal, the one shown in FIG. 5 is known (see Patent Document 1). In FIG. 5, 11 is a rectangular parallelepiped terminal portion, 12 is a cylindrical pole column portion, 13 is a plate-shaped pedestal, 14 is a resin portion made of polypropylene, polyethylene, or the like, and the terminal portion 11 has a lower end at the pole column portion. The pole column 12 is integrally connected to the upper end of the pedestal 13 at the lower end. The terminal portion 11 has a nut insertion hole 11a penetrating from the front side surface to the back side surface in FIG. 5, and bolt insertion holes 11b and 11c are drilled from the top surface and the left side surface toward the hole 11a. I'm leaning. The pole column 12 is formed with a circular flashing rod 12a at the uppermost portion of the peripheral surface, and there are three strips 12b, 12c, 12d which are smaller than the radius of the flashing rod 12a. Is formed. The peripheral surface of the flashing bar 12a protrudes from the periphery of the lower end of the terminal portion 11 in the horizontal direction. The resin portion 14 is formed around the pole column portion 12 so as to wrap the flash cutting rod 12a and the flanges 12b, 12c, 12d, extends slightly from the upper end of the flange 12a, rises upward, A lower peripheral surface of the terminal portion 11 is covered with a groove 15.

And the terminal part 11 of the resin winding terminal of a lead storage battery as described above is conventionally a bolt insertion hole 11b or 11c formed on the top surface and the left side surface after a customer inserts a rectangular parallelepiped nut into the nut insertion hole 11a. Bolts are inserted and screwed together. Therefore, there was a problem that the customer sometimes dropped the nut in an attempt to put the nut into the cavity of the small terminal portion.
Moreover, since the nut as described in Patent Document 1 has one screw hole, the bolt can be inserted only from one of the bolt insertion holes 11b and 11c formed on the top surface and the left side surface. It is necessary to change the direction of the nut each time so that the bolt insertion hole to which the external lead wire is to be connected and the screw hole of the nut match each other. The bolt could not be inserted into the nut by selecting one of the side faces, and the external lead wires could not be connected at the same time at two locations.

On the other hand, for a lead-acid battery in which a nut is fixed in advance to a terminal, “at least one of the other surfaces other than this one surface is fixed to the lead-acid battery body and the lead-acid battery body, and the nut insertion port is opened on one surface. A hollow box-shaped terminal having a bolt insertion hole formed on one surface, and a female screw hole formed to have an outer dimension slightly smaller than the inner dimension of the box-shaped terminal and facing one of the bolt insertion holes And a nut accommodated in the box-shaped terminal through the nut insertion port while maintaining a posture in which the female screw hole and the bolt insertion hole face each other, and at least a part of the nut insertion port is blocked. And a nut storage stopper provided on the lid portion of the lead storage battery main body. "Is known (see Patent Document 2). However, the present invention has a problem that a means for closing a part of the nut insertion port has to be provided separately in order to fix the nut to the terminal.
Patent Document 2 states that “a plurality of bolt insertion holes 9 provided in the box-shaped terminal 4 may be provided not only on the front end face of the box-shaped terminal 4 but also on the upper surface or the rear surface. Accordingly, the direction of attaching the lead wire connected to the terminal portions 3a and 3b according to the direction when the nut 6 is housed in the box-shaped terminal 4 and the box-shaped terminal 4 of one kind of shape. Can be provided in a plurality of orientations "(paragraph [0023]), but as shown in FIG. 2, the nut 6 has one female screw hole 10 and therefore has two lead wires. It was not possible to attach at the same time. The box-type terminal is different from the resin-wrapped terminal.

  In addition, a registered design of “storage battery terminal fitting” (see Non-Patent Document 1) is publicly known. For the description of an article related to this design, “the article related to the design of the present application is a storage battery terminal fitting”. It has a feature in a configuration in which two circular through holes are provided in a substantially rectangular parallelepiped terminal portion with their positions shifted on the upper surface and the front surface, and a substantially “U” -shaped protrusion is provided on the bottom surface portion. Yes.

  In Non-Patent Document 2, a nut is fixed to a cavity of a storage battery terminal in which two circular through holes (holes) are provided on the upper surface and the front surface in a substantially rectangular parallelepiped terminal portion as described above. “In order to improve the convenience and functionality of the terminal, the harness can be attached at the same time at two locations on the upper surface and the front surface of the terminal. The means is shown in FIG. The lead bushing terminal shape is as follows, and the hole position of the nut is designed to be compatible with the current battery.The terminal has a width 3.5mm or 4.5mm larger than the current battery, and the top surface By shifting the hole axis on the front and the front by 6.5 mm, it was designed so that the two harnesses could be fixed at the same time as shown in FIG. Column 2nd to 1st Line), “Nut was built into a specially developed special lead bushing terminal to be fixed in the terminal in the battery manufacturing process, and a technology that can be fixed in the terminal when the lid is molded with resin. Thus, even when the battery is turned over with the nut insertion opening into the terminal of the GYZ20HL battery facing down, the nut does not fall from the terminal (see FIG. 6) ”(page 45, left column, lines 6 to 11). Line)), but the method for fixing the nut to the terminal is not specifically described. Moreover, the terminal which can fix said harness simultaneously in two places is different from a resin winding terminal.

JP-A-11-154503 JP 2001-283825 A

Design Registration No. 1396609 "GS Yuasa Technical Report" December 2009, Vol. 6, No. 2, pp. 39-46

  The present invention is intended to solve the above-described problem, and can easily and securely fix a nut to a terminal portion of a resin-wound terminal, and when an external lead wire is connected to a lead storage battery. In addition, even if the nut is fixed to the terminal portion, to provide either a top surface or a front surface, or to select either of them, and to provide a resin-wrapped terminal for a lead storage battery so that a bolt can be inserted into the nut, and It aims at providing the lead acid battery provided with the manufacturing method of such a resin winding terminal, and the resin winding terminal.

The present invention employs the following means in order to solve the above problems.
(1) A rectangular parallelepiped storage battery terminal portion having a cavity into which a rectangular parallelepiped nut is inserted and an insertion port and having bolt insertion holes drilled from the upper surface and the front surface, and a pole column connected to the lower end of the terminal portion And a resin wound terminal for a lead storage battery comprising a resin portion surrounding the peripheral surface of the pole column portion, and a nut having a screw hole threaded from the upper surface to the lower surface and / or from the front surface to the back surface of the nut. The lead is characterized in that the screw hole is inserted into the cavity of the terminal part so as to communicate with the bolt insertion hole, and the bottom of the terminal part located under the cavity is deformed to fix the nut. Resin wound terminal for storage battery.
(2) Resin-wrapped terminal for lead-acid battery according to (1), wherein resin is press-fitted into the bottom of the terminal, the bottom located under the cavity is deformed, and a nut is pressed and fixed. .
(3) A rectangular parallelepiped terminal portion having a cavity and an insertion port into which a rectangular parallelepiped nut is inserted, and having bolt insertion holes drilled from the upper surface and the front surface, a pole column portion connected to the lower end of the terminal portion, And a resin wound terminal for a lead storage battery comprising a resin portion surrounding the circumferential surface of the pole column portion, and a nut having a screw hole threaded from the upper surface to the lower surface and / or from the front surface to the back surface of the nut, A screw hole is provided in the cavity of the terminal part so as to communicate with the bolt insertion hole, and a protrusion projecting in the cavity direction is provided at the bottom of the terminal part located below the cavity to fix the nut. A resin-wrapped terminal for a lead-acid battery, characterized by
(4) The lead acid battery according to (3), wherein a resin is press-fitted into a bottom portion of the terminal portion, the protruding portion is provided on the bottom portion located below the cavity, and the nut is pressed and fixed. Resin winding terminal.
(5) The resin wound terminal for lead acid battery according to (2) or (4), wherein a resin press-fitting hole is provided in a lower portion of the side wall of the terminal portion.
(6) The resin-wrapped terminal for a lead-acid battery according to (5) above, wherein the side wall is formed with a surface that bulges the meat around the resin press-fitting hole and cuts the chevron-shaped resin as viewed from the front.
(7) The terminal portion is drilled from the upper surface and the front surface at a position where the bolt insertion holes intersect at the cavity, and the nut is threaded from the upper surface to the lower surface and from the front surface to the rear surface. The screw winding for lead-acid batteries according to any one of (1) to (6), wherein the screw holes intersect.
(8) The terminal portion is drilled from the upper surface and the front surface so that the bolt insertion holes do not intersect at the cavity, and the nut is threaded from the upper surface to the lower surface and from the front surface to the rear surface. The resin wound terminal for a lead storage battery according to any one of the above (1) to (6), wherein the screw holes are formed at positions that do not cross each other.
(9) The terminal portion is drilled from the upper surface and the front surface at a position where the bolt insertion holes intersect at the cavity, and the nut is threaded from the upper surface to the lower surface or from the front surface to the rear surface. The resin-wrapped terminal for a lead storage battery according to any one of the above (1) to (6), which has one screw hole.
(10) A rectangular parallelepiped storage battery terminal portion having a cavity into which a rectangular parallelepiped nut is inserted and an insertion port, and having bolt insertion holes drilled from the upper surface and the front surface, and a pole column connected to the lower end of the terminal portion And a resin wound terminal for a lead-acid battery comprising a resin portion surrounding the peripheral surface of the pole post portion, and a screw hole threaded from the upper surface of the nut toward the lower surface and / or from the front surface to the rear surface. After inserting the nut having the screw hole into the cavity of the terminal portion so that the screw hole communicates with the bolt insertion hole, the terminal is inserted from the resin press-fitting hole provided in the lower portion of the side wall of the terminal portion when the resin portion is molded. A method for producing a resin wound terminal for a lead storage battery, wherein a resin is press-fitted into a bottom portion of the portion, the bottom portion located under the cavity is deformed, and a nut is pressed and fixed.
(11) The side wall is formed by raising the meat around the resin press-fitting hole, forming a chevron surface when viewed from the front, and cutting the resin by the chevron surface when molding the resin part. (10) The manufacturing method of the resin winding terminal for lead acid batteries of said (10).
(12) In a lead-acid battery comprising a battery case in which the inside is partitioned into a plurality of cells by a partition, and a plate group is housed in each cell, and a lid that covers the battery case from above, (1)-(9) The lead acid battery characterized by joining the said resin part of the resin winding terminal of any one of (9).
(13) An automobile comprising the lead storage battery of (12).

By applying the resin-wrapped terminal of the present invention to a lead-acid battery, it becomes possible to easily and reliably fix the nut to the terminal part, and when connecting an external lead wire to the lead-acid battery, The bolt can be inserted into the nut by selecting either the upper surface or the front surface of the terminal portion, or both. The problem that the customer dropped the nut by fixing the nut in advance could also be solved.
Moreover, the work efficiency of attaching the storage battery to the automobile body is greatly facilitated by using the terminal with the nut fixed beforehand. This effect is remarkable when mass-producing automobiles. Furthermore, this effect is remarkable when manufacturing a two-wheeled vehicle. This is because a two-wheeled vehicle has a smaller installation space for the storage battery and a work space around the two-wheeled vehicle than a four-wheeled vehicle.

It is a perspective view (figure which looked at a terminal before forming a resin part from one side) which shows an example of a resin winding terminal for lead acid batteries of the present invention. It is a perspective view which shows an example of the resin winding terminal for lead acid batteries of this invention (The figure which looked at the terminal after forming the resin part from the other side). It is a perspective view (figure which looked at a terminal after forming a resin part from one side) which shows other examples of a resin winding terminal for lead acid batteries of the present invention. It is a perspective view (figure which looked at a terminal before forming a resin part from the other side) which shows other examples of a resin winding terminal for lead acid batteries of the present invention. It is a fragmentary sectional view (polar pole part 2 and base 3 are not a section) which shows an example of a lead storage battery provided with the resin winding terminal of the present invention. It is a fragmentary sectional view which shows an example of the method of forming the resin part of the resin winding terminal of this invention (the pole column part 2 and the base 3 are not a cross section). It is a fragmentary sectional view of the conventional resin winding terminal for lead acid batteries (the pole column portion 12 and the base 13 are not in cross section).

An example of the resin-wound terminal of the present invention is shown in FIGS. 1 (a) and (b), and another example is shown in FIGS. 2 (a) and 2 (b).
The resin-wound terminal includes a rectangular parallelepiped terminal portion 1, a pole column portion 2 connected to the lower end of the terminal portion 1, a plate-like pedestal 3, and a resin portion 4 surrounding the peripheral surface of the pole column portion 2. is there.
In the example shown in FIGS. 1A and 1B, a rectangular parallelepiped storage battery terminal portion 1 has a cavity 1a into which a nut 6 is inserted and an insertion port 1b. A cavity 1a into which a nut 6 penetrating from the insertion port 1b toward the left side is inserted. However, as shown in FIG. 1B, it is preferable to leave a wall on the side surface opposite to the insertion port 1b so that the nut 6 does not come off. Further, a bolt insertion hole 1c from the upper surface and a bolt insertion hole 1d from the front face are formed at a position intersecting the cavity 1a toward the cavity 1a. When the bolt insertion holes drilled from the upper surface and the front surface of the terminal portion 1 are formed at a position that intersects with the cavity 1a, in order to use both efficiently, the position at which the center of the cavity intersects is used. Although it is preferable to form, it can also be formed so as to intersect at a position slightly shifted from the center of the cavity.
In the present invention, the nut 6 is inserted into the cavity 1 a from the insertion port 1 b of the terminal portion 1 and fixed.

  In the example shown in FIGS. 1A and 1B, when an external lead wire is connected to a storage battery in which a nut 6 is fixed to the terminal portion 1 in advance, a bolt insertion hole on the upper surface of the terminal portion 1 is necessary. In order to select either 1c or the bolt insertion hole 1d on the front surface and insert the bolt into the nut 6, a screw hole 6a threaded from the upper surface to the lower surface of the rectangular parallelepiped nut 6; A nut in which screw holes 6b threaded from the front surface to the back surface intersect is employed. The screw hole 6a threaded from the upper surface to the lower surface and the screw hole 6b threaded from the front surface to the back surface are shown in FIG. 1 (b) in order to efficiently use both screw holes. Thus, it is preferable to intersect at the center of the nut, but it can also be configured to intersect at a position slightly deviated from the center.

  Then, when the nut 6 is inserted into the cavity 1 a from the insertion port 1 b of the terminal portion 1 and fixed, the screw hole 6 a threaded from the upper surface of the nut 6 toward the lower surface is formed on the upper surface of the terminal portion 1. The screw hole 6b threaded from the front surface of the nut 6 toward the back surface communicates with the bolt insertion hole 1d formed in the front surface of the terminal portion 1 so as to communicate with the bolt insertion hole 1c formed in the front surface. To fix. Therefore, a bolt (not shown) can be inserted from the bolt insertion hole 1c on the upper surface or the bolt insertion hole 1d on the front surface, and the tip of the bolt can be screwed into the nut. Then, an external lead wire (wire that can be connected to an electrical component or the like) not shown is sandwiched and fixed between the bolt and the nut 6. As described above, in the example shown in FIGS. 1A and 1B, when connecting the external lead wire to the storage battery, even if the nut 6 is fixed, it can be selected on the top surface or the front surface as necessary. .

In the example of FIGS. 2A and 2B, in order to simultaneously connect two or more external lead wires, the position where the bolt insertion hole 1c on the upper surface and the bolt insertion hole 1d on the front surface do not intersect at the cavity 1a, That is, the bolt insertion hole 1c is formed at a position shifted to the left or right on the upper surface, and the bolt insertion hole 1d is formed at a position shifted to the right or left on the front surface.
When connecting an external lead wire to a storage battery in which a nut 6 is fixed in advance to the terminal portion 1, both the bolt insertion hole 1 c on the upper surface of the terminal portion 1 or the bolt insertion hole 1 d on the front surface are selected at the same time, and a bolt is attached to the nut 6. Position where screw hole 6a threaded from the upper surface to the lower surface of rectangular parallelepiped nut 6 and screw hole 6b threaded from the front surface to the back surface do not cross each other so that they can be inserted That is, the screw hole 6a is formed at a position shifted to the left or right of the upper surface (lower surface), and the screw hole 6b is formed at a position shifted to the right or left of the front surface (back surface).

  Then, when the nut 6 is inserted into the cavity 1 a from the insertion port 1 b of the terminal portion 1 and fixed, the screw hole 6 a threaded from the upper surface of the nut 6 toward the lower surface is formed on the upper surface of the terminal portion 1. The screw hole 6b threaded from the front surface of the nut 6 toward the back surface communicates with the bolt insertion hole 1d formed in the front surface of the terminal portion 1 so as to communicate with the bolt insertion hole 1c formed in the front surface. To fix. Therefore, a bolt (not shown) can be inserted from the bolt insertion hole 1c on the upper surface and the bolt insertion hole 1d on the front surface, and the tip of the bolt can be screwed into the nut. Then, an external lead wire (wire that can be connected to an electrical component or the like) not shown is sandwiched and fixed between the bolt and the nut 6. Thus, in the example shown to Fig.2 (a) and (b), when connecting an external lead wire to a storage battery, two or more places can be connected simultaneously.

In addition, the present invention is also illustrated in FIGS. 1A and 1B in which bolt insertion holes 1c and 1d drilled from the upper surface and front surface of the terminal portion 1 intersect at a cavity 1a (center of the cavity 1a). When the rectangular parallelepiped terminal shown in b) is used, one screw hole (either a screw hole threaded from the top surface to the bottom surface or a screw hole threaded from the front surface to the back surface) It can also be applied to nuts that have them.
In this case, a nut having one screw hole is inserted and fixed in the cavity of the terminal portion so that the screw hole communicates with the bolt insertion hole 1c on the upper surface of the terminal portion or the bolt insertion hole 1d on the front surface.

The outer shape of the nut 6 is a rectangular parallelepiped shape that matches the cavity 1 a of the rectangular parallelepiped terminal portion 1.
The nut 6 preferably has a rectangular parallelepiped shape in which the upper surface (lower surface) and the front surface (back surface) are horizontally long and substantially rectangular, and both side surfaces are approximately square. In the case of a nut in which a screw hole 6a threaded from the upper surface to the lower surface of the nut 6 and a screw hole 6b threaded from the front surface to the rear surface intersect at the center, the upper surface (lower surface) and the front surface ( The six surfaces including the back surface may have a substantially square cubic shape.
The cavity 1a of the terminal portion 1 has a shape that matches the outer shape of the nut, but the outer shape of the terminal portion 1 can be a cubic shape or a horizontally long rectangular parallelepiped shape. The aspect ratio of the terminal portion 1 is about 1: 1 to 1: 1.5. In the resin-wound terminal of the present invention, since the terminal portion 1 needs to secure a space for press-fitting the resin into the bottom portion 1h as described later, the terminal portion 1 into which a cubic nut is inserted includes the bottom portion 1h. In some cases, the shape is a vertically long rectangular parallelepiped.
Further, the corners of the nut 6 may be all right angles, but some corners are chamfered so that the outer shape of one end of the nut 6 matches the end of the cavity 1a. Preferably, the outer shape of the portion does not match the end of the cavity 1a. By adopting this shape, erroneous insertion of the nut 6 can be prevented. For example, when the cross section of the nut 6 is formed as shown in FIG. 4, when the nut 6 is inserted into the cavity 1a of the terminal portion 1 in the correct direction, the other end of the nut 6 is flush with the insertion port 1b. However, when the nut 6 is inserted in the wrong direction, the other end of the nut 6 is disposed at a position protruding outward from the insertion port 1b. As a result, the erroneous insertion can be easily detected. . This effect is that when there are a plurality of bolt insertion holes and screw holes (1c, 1d, 6a, 6b) provided in the terminal portion 1 and the nut 6, if the nut is inserted in the wrong direction, the screw hole of the nut This is particularly effective because the bolt insertion hole of the terminal portion may be displaced. In the example shown in FIG. 4 above, one end of the nut is chamfered. However, as an example in which the other end of the nut is deformed, a rounded shape or a protrusion is provided. Or a recess can be provided. When a protrusion is provided at one end of the nut, a recess capable of accommodating the protrusion is provided at a corresponding portion of the end of the cavity 1a. When a recess is provided at one end of the nut, a protrusion that can be accommodated in the recess is provided at a corresponding position of the end of the cavity 1a. In any case, it is preferable that the outer shape of the other end of the nut does not coincide with the end of the cavity 1a when it is erroneously inserted.
In the present invention, a cubic shape, a shape in which an end portion is deformed as described above, a shape in which a concave portion described later is provided, and the like are collectively referred to as “cuboid shape”.

  In the present invention, in order to fix the nut 6 to the terminal portion 1, a protruding portion protruding in the cavity direction is provided on the bottom 1h of the terminal portion 1 located below the cavity 1a. Since the fixing by this structure is due to the friction between the protrusion and the nut, it is easy to remove the nut by applying an external force exceeding the frictional force (for example, hit the exposed nut on the opposite side of the insertion slot) Can be pushed out). The protruding portion can be formed by deforming the bottom portion 1h located below the cavity 1a when the resin portion 4 is molded, after the nut 6 is inserted into the terminal portion 1, as will be described later.

When using a method in which a protrusion is provided and fixed to the bottom 1h, the portion of the bottom 1h where the protrusion is to be provided is formed thin, and the screw hole 6a of the nut 6 is provided so as to penetrate from one to the other. It is preferable. This is because the protruding portion provided on the bottom portion 1 h can be arranged at a position where the protruding portion is fitted into the screw hole 6 a of the nut 6. When such an arrangement is adopted, there is a space in which the protruding portion is formed, so that the terminal is prevented from being inadvertently deformed.
In addition, when the screw hole 6a is not a through-hole, a concave portion can be provided at the location of the nut 6 corresponding to the location where the projection of the bottom 1h is to be formed in order to facilitate the formation of the projection. .

An example of the lead acid battery provided with the resin winding terminal of the present invention is shown in FIG.
1 is a rectangular parallelepiped terminal portion, 2 is a cylindrical pole column portion, 3 is a plate-like base, 4 is a resin portion made of polypropylene, polyethylene, or the like, and the lower end of the terminal portion 1 is the upper end of the pole column portion 2 The pole column part 2 is integrally connected to the upper end of the pedestal 3. The pole column 2 is formed with a rectangular cutting rod 2a (a shape similar to the bottom surface of the terminal portion) at the top of the circumferential surface at the top of the circumferential surface, and a gap below this In this way, three ridges 2b, 2c, 2d having a diameter smaller than the length of one side of the flashing ridge 2a are formed. The peripheral surface of the barb for scissors 2a protrudes from the periphery of the lower end of the terminal portion 1 in the horizontal direction. The resin portion 4 is formed around the pole column portion 2 so as to wrap the burr for cutting 2a and the flanges 2b, 2c, 2d, extends slightly from the upper end of the flange 2a, rises upward, and rises upward. The lower peripheral surface is covered with the groove 5.

  In the present invention, when manufacturing a resin wound terminal for a lead storage battery, the pole column portion 2 is connected to the lower end of the terminal portion 1, and the peripheral surface of the pole column portion 2 is formed so as to be surrounded by the resin portion 4. As shown below, after inserting the nut 6 into the cavity 1a of the terminal portion 1, when molding the resin portion 4, the bottom portion 1h of the terminal portion 1 located below the cavity 1a is deformed and the nut 6 is fixed. . In other words, the nut 6 is fixed by providing a projecting portion projecting in the cavity direction at the bottom 1h of the terminal portion 1 located below the cavity 1a.

FIG. 4 shows an example of a method for forming the resin part of the resin-wound terminal of the present invention. When a resin-wound terminal is manufactured, first, lead alloy is injected into a mold (not shown) to form the terminal part 1 and the pole part. A metal part in which 2 and the base 3 are integrated is produced. Since a certain hardness is required for the resin winding terminal, it is preferable to use a Pb—Ca—Sn based lead alloy.
Next, this metal portion is placed in a mold including an upper mold 8 and two lower molds 9a and 9b, and a resin molding space is formed in the mold. Subsequently, after a resin such as polypropylene is injected into the resin molding space in the mold and the resin is cured, the upper mold 8 and the lower molds 9a and 9b are removed to form the resin winding terminal 7 on which the resin portion 4 is formed. obtain.
As shown in FIG. 4, if the resin portion 4 is formed in a state where the upper surface of the flashing trough 2a and the lower surface of the protrusion 8a of the upper die 8 are in close contact, the side surface of the terminal portion 1 and the side surface of the concave portion of the upper die 8 Even if there is a gap between them, the resin does not enter the gap, and it is possible to prevent flash on the side surface of the terminal portion 1.

  In the present invention, a resin press-fitting hole 1 g is provided below the side wall 1 e of the terminal portion 1, and the resin is introduced into the bottom 1 h of the terminal portion 1 when the resin portion 4 is molded. Then, with the pressure at the time of molding, the resin press-fitted from the resin press-fitting hole 1g deforms the bottom 1h of the cavity 1a thereabove to form a protruding part 1i protruding in the cavity direction as shown in FIG. 6 is pressed and fixed. In the example of FIG. 3, the protruding portion 1 i protruding in the cavity direction is fitted in a screw hole 6 a that is threaded (through) from the upper surface of the nut 6 toward the lower surface. In particular, when a protruding portion is formed in a portion where there is no threaded screw hole, a portion having a thin lead alloy thickness is formed on the bottom portion 1h, so that the portion can be easily deformed by pressure during molding. preferable. According to this method, the nut can be fixed at the time of molding the resin portion 4, and at the same time as the nut 6 is fixed, the resin winding terminal 7 is completed.

As shown in FIGS. 1 (a) and 2 (a), it is preferable to form on the side wall 1e a surface 1f that bulges the meat around the resin press-fitting hole 1g and cuts the chevron shaped resin as viewed from the front. .
As shown in FIG. 4, if the resin portion 4 is formed in a state where the upper surface of the flashing trough 2a and the lower surface of the protrusion 8a of the upper die 8 are in close contact, the side surface of the terminal portion 1 and the side surface of the concave portion of the upper die 8 As described above, even if there is a gap between them, the resin does not enter the gap. Similarly, when molding the resin portion 4, the surface 1 f that cuts the chevron-shaped resin and the lower surface of the protrusion of the upper mold 8 are formed. If the state is in close contact, the resin portion 4 can be formed without the resin entering between the side surface of the terminal portion 1 and the side surface of the concave portion of the upper mold 8.

The resin winding terminal 7 produced as described above is joined to the lid of the lead-acid battery as shown in FIG.
The end portion of the base 3 that constitutes a part of the resin winding terminal 7 and the strap 22 that is previously formed integrally with the electrode plate group 21 by the COS method or the like are joined by forming a welded portion 22a by welding. Further, when the battery case 23 and the lid 24 are welded, the upper surface of the resin portion 4 and the protrusion 24a provided on the inner surface of the lid 24 form a welded portion 24b and are joined. The air tightness and liquid tightness of the resin winding terminal 7 are such that the protrusion 24a provided on the lower surface of the lid 24 and the resin portion 4 are welded and a plurality of flanges 2b, 2c, 2d formed on the outer peripheral surface of the pole column 2 and the resin It is ensured by the adhesion with the portion 4 and the creepage distance.

1: terminal portion, 1a: cavity, 1b: insertion port, 1c: bolt insertion hole (upper surface), 1d: bolt insertion hole (front surface), 1e: side wall, 1f: surface for cutting off the chevron-shaped resin, 1g: resin press-fitting Hole, 1h: Bottom, 1i: Protruding part, 2: Polar pole part, 2a: Burr for scissors, 2b, 2c and 2d: Three swords having a diameter smaller than the length of one side, 3: Pedestal, 4: Resin portion, 5: groove, 6: nut, 6a: screw hole threaded from the top surface to the bottom surface, 6b: screw hole threaded from the front surface to the back surface, 7: resin winding terminal, 8: top Mold, 8a: protrusion of upper mold 7, 9a and 9b: divided lower mold, 21: electrode plate group, 22: strap, 22a: weld, 23: battery case, 24: lid, 24a: lid 24 Inner protrusion, 24b: welded part

  The lead storage battery including the resin-wound terminal of the present invention is useful as a lead storage battery for a two-wheeled vehicle because the installation space of the storage battery and the surrounding work space are small because the nut is fixed to the terminal portion in advance.

Claims (13)

  A rectangular parallelepiped terminal portion having a cavity and an insertion port into which a rectangular parallelepiped nut is inserted and having a bolt insertion hole drilled from an upper surface and a front surface, a pole column portion connected to a lower end of the terminal portion, and the pole In the resin wound terminal for a lead storage battery provided with a resin portion surrounding the peripheral surface of the pillar portion, the nut having a screw hole threaded from the upper surface to the lower surface and / or from the front surface to the back surface of the nut, the screw hole A resin-wrapped terminal for a lead storage battery, wherein the terminal is inserted into a cavity of the terminal part so as to communicate with the bolt insertion hole, and the bottom part of the terminal part located under the cavity is deformed to fix the nut. .   The resin-wrapped terminal for a lead storage battery according to claim 1, wherein resin is press-fitted into a bottom portion of the terminal portion, the bottom portion located under the cavity is deformed, and the nut is pressed and fixed.   A rectangular parallelepiped terminal portion having a cavity and an insertion port into which a rectangular parallelepiped nut is inserted and having a bolt insertion hole drilled from an upper surface and a front surface, a pole column portion connected to a lower end of the terminal portion, and the pole In the resin wound terminal for a lead storage battery provided with a resin portion surrounding the peripheral surface of the pillar portion, the nut having a screw hole threaded from the upper surface to the lower surface and / or from the front surface to the back surface of the nut, the screw hole It is provided in the cavity of the terminal part so as to communicate with the bolt insertion hole, and a protruding part protruding in the cavity direction is provided at the bottom part of the terminal part located below the cavity to fix the nut. A resin-coated terminal for lead-acid batteries.   The resin for lead-acid batteries according to claim 3, wherein a resin is press-fitted into a bottom portion of the terminal portion, the protruding portion is provided at the bottom portion located below the cavity, and the nut is pressed and fixed. Winding terminal.   The resin wound terminal for a lead storage battery according to claim 2 or 4, wherein a resin press-fitting hole is provided in a lower portion of the side wall of the terminal portion.   6. The resin-wrapped terminal for a lead storage battery according to claim 5, wherein the side wall is formed with a surface that bulges the meat around the resin press-fitting hole and cuts the chevron-shaped resin as viewed from the front.   The terminal portion is drilled from the upper surface and the front surface at a position where the bolt insertion holes intersect at the cavity, and the nut has screw holes threaded from the upper surface to the lower surface and from the front surface to the rear surface. The resin-wrapped terminal for lead-acid batteries according to any one of claims 1 to 6, wherein the terminals are crossed.   The terminal portion is drilled from the upper surface and the front surface so that the bolt insertion holes do not intersect with the cavity, and the nut has screw holes threaded from the upper surface to the lower surface and from the front surface to the rear surface. It forms in the position which does not mutually cross, The resin winding terminal for lead acid batteries of any one of Claims 1-6 characterized by the above-mentioned.   The terminal portion is drilled from the upper surface and the front surface at a position where the bolt insertion holes intersect at the cavity, and the nut has screw holes threaded from the upper surface to the lower surface or from the front surface to the rear surface. It has one, The resin winding terminal for lead acid batteries of any one of Claims 1-6 characterized by the above-mentioned.   A rectangular parallelepiped terminal portion having a cavity and an insertion port into which a rectangular parallelepiped nut is inserted and having a bolt insertion hole drilled from an upper surface and a front surface, a pole column portion connected to a lower end of the terminal portion, and the pole In the manufacturing method of the lead-acid battery resin-wound terminal including the resin portion surrounding the peripheral surface of the pillar portion, the nut having a screw hole threaded from the upper surface to the lower surface and / or the front surface to the back surface of the nut, After the screw hole is inserted into the cavity of the terminal portion so as to communicate with the bolt insertion hole, the resin portion is formed into a resin from the resin press-fitting hole provided in the lower portion of the side wall of the terminal portion when molding the resin portion. A method of manufacturing a resin wound terminal for a lead storage battery, wherein the bottom portion located under the cavity is deformed and a nut is pressed and fixed.   The meat around the resin press-fitting hole is raised on the side wall to form a chevron surface when viewed from the front, and the resin is edged by the chevron surface when the resin part is molded. The manufacturing method of the resin winding terminal for lead acid batteries of 10.   In a lead storage battery comprising a battery case in which the inside is partitioned into a plurality of cells by a partition, and a plate group is housed in each cell, and a lid that covers the battery case from above, the lid includes: The lead acid battery characterized by joining the said resin part of the resin winding terminal of any one of 9.   An automobile equipped with the lead storage battery according to claim 12.

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