JP2010044880A - Lid structure in storage battery - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lid structure in a storage battery capable of smoothly fitting an upper lid to a lid body. <P>SOLUTION: The storage battery includes a battery container having cell chambers, a lid body 1 covering the upper opening of the battery container, and an upper lid 5 sealing the upper part of the lid body 1, the lid body includes an exhaust hole for exhausting gas from the cell chamber, and the upper part of the lid body 1 is sealed with the upper lid 5 to form on the lid body 1 a guide passage for guiding gas exhausted from an exhaust hole 4D to the outside. The lid structure of the storage battery includes a pair of holes 11, 12 in the lid body 1, and locking parts 5D, 5E for locking in the holes 11, 12 in the upper lid 5, and one hole 11 is formed in the size obstructing the movement in the horizontal direction of the locking part 5D for locking in the hole 11, and the other hole 12 is formed in a long hole long in the counter direction of the pair of holes. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a lid structure in a storage battery that is particularly suitable for motorcycles or automobiles. Specifically, the battery case includes at least one cell chamber, a lid that covers an upper opening of the battery case, and the cell chamber. A lid portion in a storage battery comprising an upper lid that closes an upper end opening of the lid body so as to form a guide path on the lid body that guides the gas exhausted from an exhaust hole formed in the lid body to the outside. Concerning structure.

The storage battery includes a battery case having a plurality of partitioned cell chambers and a lid that covers the upper opening of the battery case, the lid having a recess formed on the top surface, and the recess forming a bottom. A bottom wall that rises upward from the outer peripheral edge of the bottom wall, and an annular protrusion that protrudes upward from the bottom wall located inside the vertical wall, the protrusion In order to form a space for collecting the gas exhausted from the plurality of exhaust holes to a specific cell chamber side, respectively, provided with exhaust holes for exhausting the gases from the plurality of cell chambers in the bottom wall inside An upper lid for closing the concave portion of the lid is provided.
The upper lid includes a joint portion that is joined to the projecting portion by welding, and after aligning the lid body in a state where the joint portion of the upper lid is heated and melted, the both are melted and integrated. (For example, refer patent document 1).
JP 2002-324537 A (see FIG. 1)

In general, the upper lid and the lid are mostly made of synthetic resin, and the upper lid is often made of a thin plate.
When attaching such an upper lid to the lid, the upper lid cannot be smoothly fitted to the lid due to the difference in shrinkage after molding, and the upper lid is attached to the lid. It was difficult.

  In view of the above-described situation, the present invention provides a lid structure in a storage battery in which an upper lid can be smoothly mounted on a lid.

In order to solve the above-described problems, the lid structure of the storage battery of the present invention includes a battery case having a plurality of partitioned cell chambers, a lid member that covers the upper opening of the battery case, and an upper portion of the lid member. The lid includes a closing upper lid, and the lid has exhaust holes for exhausting gases from the plurality of cell chambers, and the exhaust holes for collecting the gases exhausted from the exhaust holes to a specific cell chamber and discharging them to the outside. A space for collecting the gas exhausted from the exhaust hole to a specific cell chamber side, and a guide path for guiding the gas from the second exhaust hole to the outside. A lid structure for a storage battery in which an upper portion of the lid is closed by the upper lid so as to be formed on the body, wherein the lid and the upper lid have a latched portion, and the other is the latched portion. A locking portion that is locked to a pair of holes, and the locked portion includes a pair of holes. One of the holes is formed in a size that prevents the locking portion that locks into the hole from moving in the horizontal direction, and the other hole is formed as a long hole that is long in the opposing direction of the pair of holes. It is a feature. Further, the above-described space for collecting the gas exhausted from the plurality of exhaust holes in the specific cell chamber is used as a guide path for guiding the gas to the outside, and the second exhaust hole is omitted, or the plurality of exhaust holes Is an exhaust hole of at least one cell chamber. The number of the specific cell chambers may not be one.
When the upper lid is attached to the lid body, the pair of locking portions are locked to the pair of holes, and the lid body and the upper lid are moved closer to each other by moving the lid body and the upper lid from the locked state. The installation of the upper lid is completed. Since the other hole is formed as a long hole that is long in the opposing direction of the pair of holes, the upper lid and the lid body can be positioned due to differences in shrinkage after molding, temperature changes after molding, changes over time, etc. Even if it is difficult, this can be satisfactorily absorbed by the long holes. In such a case, the distance in the facing direction of the pair of locking portions changes, but the positional relationship in the direction orthogonal to the facing direction of the pair of locking portions does not change. In the opposite direction of the pair of locking portions formed only on one side, while positioning in the direction orthogonal to the facing direction of the pair of locking portions is ensured, A long long hole can absorb the expansion and contraction of the upper lid. As means for joining and integrating the protruding portion of the lid and the joint portion of the upper lid, an adhesive is used in addition to heat welding.
The electrode plate group is housed in each of the plurality of cell chambers, and the lid includes a bushing and a terminal inserted and welded with a pole column extending from the electrode plate group, and the bushing includes the A conductive portion for connecting the terminal is integrally formed with the bushing and the terminal to form the terminal portion, and at least the lower portion of the bushing and the conductive portion are embedded in the lid by insert molding. If there is a difference in the shrinkage rate due to temperature drop after insert molding between the lid part near the terminal part and the lid part away from the terminal part, the above positioning becomes difficult The present invention is effective.
Further, a concave portion recessed downward is formed on the upper surface of the lid, and the concave portion has a bottom wall forming a bottom portion and a vertical wall raised upward from an outer peripheral edge of the bottom wall, An annular projecting portion for forming the space by joining the joint portion of the upper lid to the bottom wall inside the vertical wall is provided, and the exhaust hole is formed in the bottom wall inside the projecting portion, An annular groove is provided between the projecting portion and the vertical wall, and the guide path uses a part of the bottom wall forming the groove so that gas is discharged to the outside while bypassing the groove. In the case of being formed in a tunnel shape, the present invention is effective since the upper lid can be fitted inside the vertical wall and at the same time the joining portion and the protruding portion can be joined smoothly.

  Further, the upper lid is made of a synthetic resin and has a flat plate shape, and the joint portion of the upper lid and the protruding portion of the lid body are melted and sealed.

  Further, the upper lid is configured in a rectangular shape, the pair of locking portions are provided at intervals in the longitudinal direction of the upper lid, and the elongated hole is configured as a long hole extending in the direction along the longitudinal direction of the upper lid. It is characterized by that.

  Further, the pair of locking portions are formed of a rod-shaped body having a circular cross section provided in the upper lid or a hollow cylindrical shape, and one of the pair of locked portions is the same as or more than the locking portion. Is a circular hole having a slightly larger diameter, and the other locked portion is an oval hole.

  One of the lid and the upper lid is provided with a locked portion, and the other is provided with a locking portion that locks to the locked portion, and the locked portion includes a pair of holes, and one of the pair of holes The upper cover is formed in a size that prevents the movement of the locking portion that locks into the hole in the horizontal direction, and the other hole is a long hole that is long in the opposing direction of the pair of holes. Even if positioning between the lid and the lid is difficult due to differences in shrinkage after molding, temperature changes after molding, changes over time, etc., the expansion and contraction displacement is good with a long hole that is long in the opposite direction of the pair of holes. Therefore, it is possible to provide a lid structure in a storage battery in which the upper lid can be smoothly attached to the lid.

  1 and 2 show a lid 1 of the lead storage battery of the present invention. FIG. 1 shows a state in which an upper lid 5 to be described later is mounted, and FIG. 2 shows a state before the upper lid 5 to be described later is mounted. ing. The lid 1 is formed of a synthetic resin in a rectangular shape in a plan view, and covers an upper opening of a battery case (not shown) provided with a plurality of partitioned cell chambers. The lead-acid battery provided with the lid 1 is particularly suitable for mounting on a vehicle such as a motorcycle or an automobile, but can also be used for other purposes. 1 and 2, the long side direction of the lid 1 is the left-right direction, and the direction orthogonal to the long side direction is the front-rear direction.

As shown in FIG. 2, the lid 1 is provided with a pair of left and right terminals 2 and 3 on one long side (front end in the front-rear direction) so as to be located at both ends in the long side direction (left-right direction), respectively. A first lid portion 1A and a second lid portion 1B having an upper surface higher than the upper surface of the first lid portion 1A are provided. And the recessed part 4 dented below is formed in the upper surface of the said 2nd cover part 1B.
The concave portion 4 is formed over a wide range from the end on the first lid portion 1A side of the upper surface of the second lid portion 1B to a position slightly closer to the rear side than a position halved in the front-rear direction. . Moreover, by providing the flat surface 1F without the recessed part 4 on the other long side (front-rear direction rear end side), it can be used as a space for attaching a seal or the like with a model number or the like on the flat surface 1F. I am doing so. As described above, the flat surface 1F on the upper surface of the lid 1 can be used as a space for sticking a sticker, and if a reference symbol for checking various data is written on the sticker, a process before the upper lid 5 is attached. Data, for example, data at the time of liquid injection, can be collated based on the reference numerals (conventionally, if described based on Patent Document 1, such a seal is provided after the top lid 19 is mounted, that is, liquid injection is performed. Since it was affixed to the upper lid 19 after the upper lid 19 was attached, even when such a reference symbol was written on the seal, the data at the time of liquid injection could not be collated based on the reference symbol). In FIG. 2, the left terminal 2 is a negative terminal, and the right terminal 3 is a positive terminal.

  The recess 4 has a bottom wall 4A that forms the bottom, and a vertical wall 4B that rises upward from the outer peripheral edge of the bottom wall 4A. Further, inside the concave portion 4, an annular projecting portion 4 </ b> C projecting upward is provided at a portion of the bottom wall 4 </ b> A located inside the vertical wall 4 </ b> B. Although the upper surface of this protrusion 4C is lower than the height of the vertical wall 4B, it does not necessarily have to be the same height at any position. As will be described later, when the lower end of the joint portion 5C of the upper lid 5 and the protruding portion 4C of the lid body 1 are melted and integrated, the outer peripheral edge 5G of the upper lid 5 covers the groove portion 4M. At the same time, the upper surface of the upper lid 5 and the flat surface 1F of the lid 1 are arranged on substantially the same plane.

As shown in FIGS. 2 and 3, the bottom wall 4A inside the protrusion 4C is provided with exhaust holes 4D for exhausting gases from the plurality (six in the figure) of the cell chambers.
As shown in FIGS. 1, 2, and 7A, 7B, 7C, and 7D, the gas exhausted from the plurality of exhaust holes 4D is collected to a specific cell chamber side. In order to form this space, an upper lid 5 that closes the inside of the protruding portion 4C is provided. The protruding portion 4C is formed in a substantially rectangular shape in plan view of FIG. 2, and includes a curved portion in which that portion enters the inside so as to bypass a second exhaust hole 4F described later. Further, the bottom wall 4A is formed on an inclined surface positioned downward toward the exhaust hole 4D, and the electrolyte solution escaped from each exhaust hole 4D can be returned to the corresponding exhaust hole 4D side. It is designed to function as a possible guide surface. Furthermore, it is provided with extending portions 4E and 4E that extend inward from the opposing positions of the protruding portion 4C and form gaps located between the adjacent exhaust holes 4D, and only gas exhausted from the exhaust holes 4D is provided. The inside of the protrusion 4C is freely moved so that the electrolyte that has escaped from the exhaust hole 4D can be prevented from moving toward the other adjacent exhaust hole 4D as much as possible.

As shown in FIG. 2, FIG. 3 and FIG. 4C, a pair of left and right cylinders that are welded by inserting a pole column (not shown) for taking out electric power, extending from the battery case, into the recess 4. The bushings 6 and 7 are embedded. The bushings 6 and 7 and the bushings 6 and 7 and the lower side of the terminals 2 and 3 juxtaposed in the horizontal direction are connected by a conductive portion (not shown).
The terminals 2 and 3, the bushings 6 and 7, and the conducting portion are integrally formed of lead or a lead alloy to constitute a terminal portion, and the conducting portion is embedded in the lid 1.

  The upper lid 5 is made of synthetic resin, and as shown in FIG. 7B, the joint 5C having the same outer shape and the same size as the projection 4C joined to the projection 4C, and the An outer peripheral edge 5G that covers an annular groove 4M formed between the protrusion 4C and the vertical wall 4B is provided. After the lower end of the joint 5C of the upper lid 5 is in a molten state, the protrusion 4C of the recess 4 By combining, both can be melted and integrated. The second exhaust hole 4F is provided with a porous filter and a valve (not shown) for the purpose of explosion-proof, prevention of backflow of gas from the outside, and adjustment of internal pressure. The joint 5C is also provided with portions corresponding to the pair of extending portions 4E and 4E provided at five locations of the projecting portion 4C, and these are also referred to as the joint 5C.

  The material of the lid 1 and the upper lid 5 is preferably a thermoplastic resin such as polypropylene resin, but may be other synthetic resins. When the upper lid 5 is heat-welded to the lid body 1, it is preferable that both materials are the same.

  A second exhaust hole 4F different from the exhaust hole 4D formed in the bottom wall 4A is provided in the bottom wall 4A provided with the fourth exhaust hole 4D from the left in FIG. 1, and the cell provided with this exhaust hole 4D A guide path is formed in the chamber (specific cell chamber) to collect gas from other cell chambers through the exhaust hole 4D and guide the gas from the second exhaust hole 4F to the outside, bypassing the groove 4M. Has been. That is, the guide path 8 shown in FIG. 7B protrudes downward from the lower surface of the upper lid 5 and protrudes from the bottom wall 4A so as to match the annular joint 5T. The first guide path 9 (see FIG. 5A and FIG. 6) formed by joining the protruding portion 4T shown, and between the one end of the first guide path 9 and the discharge port 4K. The projecting portion 4T that forms the groove 4M, the bottom wall 4A, and the tunnel-shaped second guide path 10 that is formed by partially using the vertical wall 4B.

As shown in FIGS. 5 (a), (b), (c) and FIG. 6, the first guide path 9 includes an upper guide portion 9A for moving the gas from the second exhaust hole 4F upward, It is formed by a horizontal guide portion 9B that moves the gas from the upper guide portion 9A in the horizontal direction and a lower guide portion 9C that moves the gas from the horizontal guide portion 9B downward, and the gas from the lower guide portion 9C is The second guide route 10 is handed over.
The upper guide portion 9A guides the gas from the second exhaust hole 4F up to a predetermined height above the cylindrical first upper guide portion 9a and the gas from the first upper guide portion 9a further upward. Accordingly, a cylindrical second upper guide portion 9b having a larger diameter than the first upper guide portion 9a is provided.
The horizontal guide portion 9B includes a left-right direction guide portion 9c that moves gas to one side in the left-right width direction (right side in FIG. 2) of the lid 1, and a gas guided to the end of the left-right direction guide portion 9c in the guide direction. Is provided with a front-rear direction guide portion 9d that moves the lid 1 in the thickness direction (front-rear direction orthogonal to the left-right width direction) to one side (lower side in FIG. 2).

  The second guide path 10 has a discharge port 4K formed in the vertical wall 4B by inserting a rod (a hole-forming rod) into the mold, and forward of the lower guide portion 9C from the vertical wall 4B. A tunnel-like through hole 10A is formed between the side wall 9h and the side wall 9h.

As described above, by forming the guide path 8 that guides the gas discharged from the second exhaust hole 4F to the discharge port 4K, bypassing the lower side of the groove 4M, the height level of the discharge port 4K is increased. In addition to the fact that the gas can hardly reach the vicinity of the terminals 2 and 3 along the periphery of the upper lid 5, the groove 4 M and the guide path 8 are not connected, and the discharge port 4 K can be connected only to the guide path 8. it can.
Accordingly, with the upper lid 5 attached, a guide route is provided by applying pressurized air into the groove 4M with the space between the inner surface 4b of the vertical wall 4B and the outer peripheral surface 5N of the upper lid 5 shown in FIG. 8 and the joint portion 5T of the lid 1 that separates the groove portion 4M and the joint portion 5T of the upper lid 5, and the joint portion 4C of the projection portion 4C of the lid body 1 that separates the space and the groove portion 4M from the joint portion 5C. The poor bonding state can be detected by the presence or absence of a pressure drop in the pressurized air.

  As shown in FIG. 6, the discharge port 4 </ b> K has an annular donut-shaped protrusion 4 </ b> G protruding from the surface of the vertical wall 4 </ b> B constituting the lid body 1, and a protrusion 4 </ b> G in a circumferential direction of the protrusion 4 </ b> G. Three cutouts 4L, 4N, and 4P are provided that allow the discharged gas to be discharged from the radial direction of the protrusion 4G. The three cutouts extend through the center of the discharge port 4K to the left and right cutouts 4L and 4P formed on both sides in the left-right direction of the lid 1, and extend to the lower end side of the lid 1 through the center of the discharge port 4K. The lower notch 4N is formed as described above. Accordingly, the gas is discharged through the three notches 4L, 4N, and 4P even in the state where the foreign matter is in contact with the surface of the protrusion 4G while omitting the notch extending upward so that dust does not easily collect. It can be done. The number of notches 4L, 4N, and 4P, the size of the width, and the like can be freely changed. In addition, you may provide the notch by denting the surface of the vertical wall 4B, without providing the said protrusion 4G.

In order to perform positioning when both the lid 1 and the upper lid 5 are mounted, one of the lid 1 and the upper lid 5 is provided with a locked portion, and the other is locked to be locked to the locked portion. Department.
As shown in FIGS. 7A to 7D, the locking portion protrudes downward from the lower surface of the upper lid 5 and has a circular cross-section and a hollow cylindrical shape (the inside may be a solid rod-like body). ) Having a pair of left and right cylinders 5D and 5E.
Further, as shown in FIG. 2, the locked portion includes a pair of left and right holes 11, 12, and one of the pair of left and right holes 11, 12 is locked to the hole 11. The portion 5D is formed in a size that prevents the horizontal movement of the portion 5D, and the other hole 12 is formed in a long hole in the direction opposite to the pair of holes 11, 12, that is, an oval shape.
Therefore, as described above, before the joint portions 5C and 5T of the upper lid 5 are melted and integrated with the protrusions 4C and 4T of the lid body 1, a pair of locking portions with respect to the pair of holes 11 and 12 is provided. By positioning 5D and 5E, the positioning of the protrusions 4C and 4T of the lid 1 and the joints 5C and 5T of the upper lid 5 is completed, and the lid 1 and the upper lid 5 are moved closer to each other from that state. The projecting portions 4C and 4T of the lid 1 and the joint portions 5C and 5T of the upper lid can be reliably joined. And by forming one hole 12 as a long hole, even if the upper lid 5 and the lid body 1 are difficult to position due to a difference in shrinkage after molding, a temperature change after molding, or a change over time, Even when the upper lid 5 expands and contracts in the longitudinal direction according to the room temperature, the long hole absorbs it well, and the engagement is performed smoothly.

  In addition, the electrode plate group is accommodated in each of the plurality of cell chambers, and as shown in FIG. 8, the bushing 7 in which the pole column 12 extending from the electrode plate group is inserted and welded to the lid body and A conducting portion 13 provided with a terminal 3 and for connecting the terminal 3 to the bushing 7 is formed integrally with the bushing 7 and the terminal 3 to form a terminal portion, and at least under the bushing 7 of the terminal portions. The side portion and the conductive portion 13 are embedded in the lid body 2 by insert molding. In such a thing, a difference arises in the shrinkage | contraction rate accompanying the temperature change after insert molding between the cover body part near a terminal part, and the cover body part away from the terminal part, and the upper cover with respect to the above-mentioned cover body 1 Although positioning of 5 may become difficult, as mentioned above, the long hole 12 absorbs well and engagement is performed smoothly. In FIG. 8, a black portion B indicates a welded portion where the bushing 7 and the pole 12 are burner welded.

  Further, as described above, the concave portion 4 recessed downward is formed on the upper surface of the lid body 2, and the concave portion 4 is raised upward from the bottom wall 4A forming the bottom portion and the outer peripheral edge of the bottom wall. A vertical wall 4B, and a bottom wall 4A on the inner side of the vertical wall 4B is provided with an annular projecting portion 4C for joining the joint portion 5C of the upper lid 5 to form the space. The exhaust hole 4D is formed in the bottom wall 4A on the inner side of the portion 4C, and an annular groove 4M is provided between the protruding portion 4C and the vertical wall 4B, and the guide path bypasses the groove 4M with gas. A tunnel is formed using a part of the bottom wall 4A forming the groove 4M so as to be discharged to the outside. In such a case, while the positioning in the direction orthogonal to the facing direction of the pair of locking portions 5D and 5E is reliably performed, the long hole 12 that is long in the facing direction of the pair of locking portions formed only on one side. Since the expansion and contraction of the upper lid 5 can be absorbed, there is an advantage that the upper lid 5 can be fitted inside the vertical wall 4B and at the same time the joining portion 5C and the protruding portion 4C can be joined smoothly.

  Further, as shown in FIGS. 4A to 4D, the terminals 2 and 3 are in the rectangular top plate portions 2A and 3A and in the front view of the four sides of the top plate portions 2A and 3A. Front plate portions 2B, 3B hanging downward from three sides other than the right side, rear plate portions 2C, 3C, left plate portions 2D, 3D, top plate portions 2A, 3A and front plate The parts 2B and 3B are formed with through holes 2a, 2b and 3a, 3b for penetrating bolts (not shown), and the bolts (FIG. 2) penetrated through the through holes 2a, 2b and 3a, 3b. A nut (not shown) is screwed into a nut (not shown) inserted into the terminal so that the nut can be fixed to the terminal with a bolt. Then, an external lead wire (wire that can be connected to an on-vehicle electrical component or the like) that is not illustrated is sandwiched and fixed between these bolts and nuts.

  In the embodiment, the joints 5C and 5T of the upper lid 5 are melted and integrated in accordance with the protrusions 4C and 4T of the lid 1, but the joints 5C and 5T of the upper lid 5 and the lid 1 The structure which integrates the protrusion parts 4C and 4T with an adhesive agent may be sufficient.

  Moreover, in the said embodiment, although the other hole 12 was formed in the elongate hole long in the opposing direction of a pair of holes 11 and 12, ie, an oval shape, the rectangular shape where both ends are squared may be sufficient.

  Furthermore, in the said embodiment, although the upper cover 5 was comprised from the rectangular shape, what kind of shapes, such as a square, an ellipse, or a circle, may be sufficient.

  In addition, although the locking portion is composed of a rod-shaped body, any shape can be used as long as the locking portion can be locked in the hole of the locked portion, the locking portion is a hole, and the locked portion is a rod-shaped body. It may be.

In FIG. 2, a guide path is provided for collecting gas in a specific cell chamber and leading the cell chamber to the outside through the second exhaust hole. However, the second exhaust hole is omitted with the space as a guide path. Also good.

Moreover, in the said embodiment, although the battery case provided with the several cell chamber was shown, the battery case provided with one cell chamber may be sufficient. In this case, an exhaust hole for discharging from the cell chamber to the outside through the guide path is provided in a state communicating with the guide path.

It is a top view of the cover body equipped with the upper cover. It is a top view of the cover body before mounting | wearing with an upper cover. It is a bottom view of a lid. (A) is a right side view of the lid, (b) is a front view of the lid, (c) is a cross-sectional view taken along line AA in FIG. 2, and (d) is a cross-sectional view taken along line AB in FIG. . (A) is a top view which shows the circumference | surroundings of a 2nd exhaust hole, (b) is a longitudinal cross-section of a 2nd exhaust hole, (c) is a figure which shows the outline of a guidance path | route. It is a perspective view which shows the periphery of a 2nd exhaust hole. An upper lid is shown, (a) is a plan view thereof, (b) is a bottom view thereof, (c) is a front view thereof, and (d) is a sectional view taken along line CC in FIG. 7 (b). It is sectional drawing of the terminal part embed | buried under the cover body with which the upper cover was mounted | worn.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Cover body, 1A ... 1st cover part, 1B ... 2nd cover part, 1F ... Flat surface, 2, 3 ... Terminal, 2A, 3A ... Top plate part, 2B, 3B ... Front plate part, 2C ... Rear plate Part, 2D, 3D ... left plate part, 2a, 2b, 3a, 3b ... through hole, 4 ... recess, 4A ... bottom wall, 4B ... vertical wall, 4C, 4T ... projecting part, 4D ... exhaust hole, 4E ... extension Outlet, 4F ... second exhaust hole, 4G ... protrusion, 4K ... discharge port, 4M ... groove, 4T ... projection, 4L, 4N, 4P ... notch, 4b ... inside surface, 5 ... top cover, 5C, 5T ... Joining part, 5D, 5E ... locking part, 5G ... outer peripheral edge, 5N ... outer peripheral surface, 6, 7 ... bushing, 8, 9, 10 ... guide path, 9A ... upper guide part, 9B ... horizontal guide part, 9C ... Lower guide part, 9a ... 1st upper guide part, 9b ... 2nd upper guide part, 9c ... Left-right direction guide part, 9d ... Front-rear direction guide part, 9h ... Wall, 10A ... Through-hole, 1, 12 ... hole

Claims (7)

  A battery case provided with at least one cell chamber, a lid that covers the upper opening of the battery case, and an upper lid that closes the top of the lid are provided. The lid body exhausts gas from the cell chamber. A lid portion structure in a storage battery having an exhaust hole, wherein the upper lid is closed above the lid body so as to form a guide path on the lid body for guiding the gas exhausted from the exhaust hole to the outside. One of the body and the upper lid is provided with a locked portion, and the other is provided with a locking portion locked to the locked portion, and the locked portion includes a pair of holes. One of the holes is formed in a size that prevents the locking portion that locks into the hole from moving in the horizontal direction, and the other hole is formed as a long hole that is long in the opposing direction of the pair of holes. The cover part structure in the storage battery characterized by this.   A battery case provided with a plurality of cell chambers; a lid that covers an upper opening of the battery case; and an upper lid that closes the top of the lid body. An exhaust hole for exhausting each gas and a second exhaust hole different from the exhaust hole for collecting the gas exhausted from the exhaust hole in a specific cell chamber and exhausting the gas to the outside are exhausted from the exhaust hole. A storage battery that closes the top of the lid with the upper lid so as to form on the lid a space for collecting gas to a specific cell chamber side and a guide path for guiding the gas from the second exhaust hole to the outside. The lid portion structure includes a locking portion on one of the lid body and the upper lid, and a locking portion that locks the locking portion on the other side. The horizontal movement of the locking portion that locks one of the pair of holes into the hole Lid structure in storage batteries are formed to a size that prevents and characterized by being formed in a long length hole and the other holes in the opposing direction of the pair of holes.   The electrode plate group is housed in each of the plurality of cell chambers, and the lid body includes a bushing and a terminal inserted and welded with a pole column extending from the electrode plate group, and the bushing includes the terminal. A conductive portion for connection is formed integrally with the bushing and the terminal to form a terminal portion, and at least a lower portion of the bushing and the conductive portion are embedded in the lid body by insert molding. The lid part structure in the storage battery according to claim 1 or 2, wherein:   A concave portion recessed downward is formed on the top surface of the lid, and the concave portion has a bottom wall forming a bottom portion and a vertical wall raised upward from an outer peripheral edge of the bottom wall. An annular protrusion for forming the guide path, or a space and a guide path by joining the upper lid to the bottom wall inside the wall, and the exhaust hole, or the bottom wall inside the protrusion, or An exhaust hole and a second exhaust hole are formed, and an annular groove is provided between the protrusion and the vertical wall, and the guide path is configured to allow the gas to be discharged to the outside while bypassing the groove. The lid part structure in the storage battery according to any one of claims 1 to 3, wherein the lid part structure is formed in a tunnel shape by using a part of a bottom wall that forms the battery.   5. The upper lid is made of a synthetic resin and has a flat plate shape, and a joint portion of the upper lid and a protruding portion of the lid body are melted and sealed. The cover part structure in a storage battery.   The upper lid is configured in a rectangular shape, the pair of locking portions are provided at intervals in the longitudinal direction of the upper lid, and the long hole is configured as a long hole in a direction along the longitudinal direction of the upper lid. The cover part structure in the storage battery in any one of Claims 1-5 characterized by the above-mentioned.   The pair of locking portions are formed of a rod-shaped body having a circular cross section provided in the upper lid or a hollow cylindrical shape, and one of the pair of locked portions is the same as or slightly smaller than the locking portion. The lid structure in a storage battery according to any one of claims 1 to 6, wherein the lid portion is a circular hole having a large diameter, and the other locked portion is an oval hole.

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