JP2001256964A - Connecting structure of battery terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent wrong connection securely due to an error of polarity, to secure excellent workability, and additionally to decrease the cost. SOLUTION: In a connecting structure of a battery terminal, a recess potion 26 are formed on the corner portion 24, 25 of battery bodies 20. Battery posts 21, 22 as a cathode and an anode are provided in each of the recess portions 26. Post protective covers 30, 31 for covering each of the battery posts 21, 22 are provided detachably on the battery bodies 20 and other bodies. Openings for terminal 32, 33 wherein only battery terminals 40, 41 having a corresponding polarities that can be fitted and inserted are provided on each of the protective covers 30, 31.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection structure of a battery terminal for connecting a positive pole or a negative pole battery terminal connected to an end of a wire to a battery post of a corresponding polarity of a battery body, respectively. .

[0002]

2. Description of the Related Art As a conventional connection structure for battery terminals, there is one disclosed in Japanese Patent Application Laid-Open No. 4-220947. Referring to FIGS. 5 and 6, in the conventional battery 60, a bolt 65 inserted through a bolt insertion hole 64 of a cord terminal 63 is screwed into a bolt attachment hole 62 of a battery terminal 61 formed in a substantially prismatic shape. As a result, the cord terminal 6 is connected to the battery terminal 61.
3 is described.

[0003] When connecting the cord terminal 63 to the battery terminal 61, the cord terminal 63 is connected to the flat plate portion 6.
3a is engaged with the coupling surface 61a of the battery terminal 61 of the battery 60, and a pair of protrusions 63b formed by bending the edge of the flat plate portion 63a is attached to the two side surfaces 61b of the battery terminal 61, respectively. Engaged. Also, the bolt mounting hole 6 of the battery terminal 61
2 and the bolt insertion hole 64 of the cord terminal 63 are provided at a position eccentric from the center of the coupling surface 61 a of the battery terminal 61.

[0004]

In the conventional battery terminal connection structure described above, each projecting piece 63b of the cord terminal 63 is connected to each side surface 61b of the battery terminal 61.
And the eccentricity of the bolt mounting hole 62 and the bolt insertion hole 64 with respect to the center of the coupling surface 61a of the battery terminal 61, the cord terminal 6
3 is regulated. Therefore, erroneous connection due to a wrong connection direction can be prevented.

[0005] However, the polarity of the cord terminal 63 is not changed at all, and there is a problem that erroneous connection due to the polarity difference between the battery terminal 61 and the code terminal 63 cannot be prevented.

Further, there is another problem that the work of attaching the cord terminal 63 to the battery terminal 61 is complicated, and it is difficult to reduce the work time. That is, when attaching the code terminal 63, the operator attaches the flat portion 63 a of the code terminal 63 to the connection surface 61 of the battery terminal 61.
In the state of being engaged with a, the position of the bolt insertion hole 64 of the cord terminal 63 is adjusted to the position of the bolt attachment hole 62 of the battery terminal 61. Then, while holding this state with one hand, it is necessary to screw the bolt 65 into the bolt mounting hole 62 through the bolt insertion hole 64 with the other hand. Therefore, the operator is forced to perform a complicated operation using both hands, which requires a lot of operation time.

Further, a bolt 65 inserted through a bolt insertion hole 64 of a cord terminal 63 is screwed into a bolt mounting hole 62 of a battery terminal 61 to thereby connect the battery 60.
As a sufficient effect.

[0008] As a widely used battery, a battery post to which a battery terminal is connected is provided upright on a battery body in advance, and each of the battery terminals is fixed by a fixing nut screwed to the battery post. A configuration for fixing to a battery post is given. The conventional battery terminal connection structure described above cannot be directly applied to such a configuration. Moreover, even if it can be applied, no remarkable effect can be expected to improve workability.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is possible to reliably prevent erroneous connection due to a difference in polarity, to ensure good workability, and to reduce costs. It is an object of the present invention to provide a connection structure of a battery terminal that can be connected.

[0010]

SUMMARY OF THE INVENTION The object of the present invention is to provide a battery terminal in which a positive or negative battery terminal connected to an end of a wire is connected to a battery post of a corresponding polarity of a battery body. In the connection structure of the above, the battery main body is provided with a positive pole and a negative pole battery post, detachably provided separately from the battery main body,
A post protection cover that covers each of the battery posts, wherein each of the post protection covers is formed in a required shape dedicated to a positive pole or a negative pole so that only the battery terminal of the corresponding polarity can be inserted. Each of the battery terminals is formed in a required shape that can be inserted into the corresponding terminal opening, and is fitted to the battery post at a tip end in the insertion direction into the terminal opening. The problem can be solved by a connection structure for a battery terminal, which is provided with a connection groove for obtaining electrical connection.

[0011] In the battery terminal connection structure having the above-described configuration, the positive or negative battery terminals connected to the ends of the electric wires are respectively fitted into the corresponding terminal openings of the post protection cover, and the leading end of the battery terminal is connected to the end of the wire. The battery post is fitted into the connection groove to obtain an electrical connection.

At this time, even if the battery terminal is erroneously inserted into an unsupported terminal opening,
It cannot be fitted due to the difference in shape. Therefore, the battery terminal is not connected to the battery post by mistake in polarity. Also, when each battery terminal is inserted into the corresponding terminal opening,
There is almost no fear of falling off during work. Therefore, good workability can be obtained.

In the connection structure of the battery terminals, preferably, a locked portion for locking the battery terminals is provided near each of the battery posts of the battery body, and a tip end of each of the battery terminals is provided at a tip end of each of the battery terminals. A battery is provided with a locking claw that is locked to the locked portion as the post protection cover is fitted into the battery post from the corresponding terminal opening. It can be solved by the connection structure of the terminal.

In the battery terminal connection structure having the above-described structure, as each battery terminal is inserted into the corresponding terminal opening of the post protection cover,
A locking claw provided at the tip of the battery terminal in the fitting direction is locked to a locked portion provided near each battery post of the battery body. Therefore, troubles such as the battery terminal falling out of the terminal opening during the work can be reliably prevented, and good workability can be obtained.

In the battery terminal connection structure, preferably, each of the battery terminals is provided with a rib for preventing rotation along a direction of insertion into the terminal opening. Each terminal opening is provided with a rib groove into which the anti-rotation rib is inserted, which can be solved by a battery terminal connection structure.

In the battery terminal connection structure having the above-described structure, when the battery terminals of the respective poles are respectively inserted into the corresponding terminal openings of the post protective cover, the battery terminals protrude along the direction of insertion into the respective terminal openings. The provided rotation preventing rib is fitted into the rib groove of the terminal opening. Therefore, inadvertent rotation of each battery terminal in, for example, a horizontal plane during the operation is reliably prevented, and good workability can be obtained.

In the battery terminal connection structure, preferably, each of the battery terminals of the respective polarities is fitted with the corresponding battery post by being inserted into the corresponding terminal opening. A screw member that is fixed by screwing to the battery post is provided.
A work opening for screwing the respective screw members is provided, and each screw member is integrally provided with an opening closing member that closes the work opening as the screw is engaged with the battery post. It can be solved by the connection structure of the battery terminal, which is characterized by being provided in a specific manner.

In the battery terminal connection structure having the above-described configuration, each battery terminal is inserted into the corresponding terminal opening and the battery post is fitted into the connection groove, and the screw member is attached to the battery post. It is fixed by being screwed. With the screwing of the screwing member to the battery post, an opening closing member provided integrally with the screwing member closes the working opening. Therefore, high waterproofness and dustproofness are ensured by closing the working opening after the work.

In the battery terminal connection structure, preferably, each of the opening closing members is manually operable from the outside, and a tool mounting portion capable of mounting a required tool for screwing the screwing member. Is provided, and the connection structure of the battery terminal can be solved.

In the battery terminal connection structure having the above-mentioned configuration, each battery terminal is inserted into the corresponding terminal opening and the battery post is fitted into the connection groove, and the screw member is attached to the battery post. It is fixed by being screwed.

That is, the screwing member can be manually rotated from outside by manually operating the integrally provided opening / closing member, or can be operated via a required tool mounted on the tool mounting portion of the opening / closing member. Is screwed into the battery post. The opening closing member closes the working opening with the screwing of the screwing member to the battery post. Therefore, it is possible to ensure both good screwing workability of the screwing member and high waterproofness and dustproofness by closing the work opening after the work.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of a connection structure of a battery terminal according to the present invention will be described in detail with reference to FIGS. 1 is a perspective view of a main part showing a connection structure of a battery terminal according to the present embodiment, FIG. 2 is a perspective view of a main part showing a concave portion and a battery post in FIG. 1, and FIG. 3 is a locked part and a locking part in FIG. It is sectional drawing which shows a nail | claw.

As shown in FIG. 1, the positive or negative battery terminals 40 and 41 connected to the wire end 10 are respectively connected to the corresponding battery posts 21 and 22 of the battery body 20. At the same time, it is fixed by tightening the fixing nut 23 screwed to the battery posts 21 and 22.

Also, left and right corners 24, 25 (hereinafter, left corners 2) of the upper part of the battery body 20 in FIG.
4, a right corner 25) is formed with a pair of left and right concave portions 26 in FIG.

As shown in FIG. 2, each recess 26 has
Positive and negative pole battery posts 21 and 22
However, it is provided so that the tip (the upper end in FIG. 1) does not protrude from the upper surface of the battery main body 20 in FIG. At the base ends of the battery posts 21 and 22 in each of the concave portions 26, a locked portion 27 having a substantially square shape in plan view is provided so as to protrude stepwise from the periphery. Each locked portion 27 locks a locking claw 47 of a battery terminal 40, 41 described later.

Further, each of the recesses 26 has a post protection cover 30, 31 for covering each of the battery posts 21, 22.
Is detachably provided separately from the battery main body 20. Each of the post protective covers 30 and 31 has two side surfaces 30b and 31b that are provided substantially perpendicularly from two edges of the substantially square upper surfaces 30a and 31a, and is made of an insulating material such as a synthetic resin. Is formed. When the respective post protective covers 30 and 31 are fitted into the respective recesses 26, the upper surfaces 30a and 31a are substantially flush with the upper surface in FIG. 1 of the battery main body, and the respective side surfaces 30b and 31b are The dimensions are set so as to be substantially flush with each outer wall of the main body.

Each of the post protection covers 30 and 31 has
Terminal openings 32 and 33 are provided.

A total of two terminal openings 32, 33 are provided, one for each post protection cover 30, 31,
One side surface 30b, 31b of each post protective cover 30, 31
Are provided respectively. Openings 3 for each terminal
2 and 33 are formed in a required shape dedicated to a positive pole or a negative pole, and only the battery terminals 40 and 41 of the corresponding polarity can be inserted.

That is, the terminal opening 32 provided in the post protection cover 30 on the left side in FIG. 1 has the rib groove 32a into which the rotation preventing rib 43 described later is fitted facing upwardly from the right end in the longitudinal direction. For example, only the positive battery terminal 40 can be inserted. In addition, the terminal opening 33 provided in the post protection cover 31 on the right side in FIG. 1 has a rib groove 33a into which the rotation preventing rib 45 is fitted, facing upward from the left end in the longitudinal direction. , For example, a negative battery terminal 4
Only 1 can be inserted.

Each of the post protection covers 30, 31
The work openings 34 are provided in the upper surfaces 30a and 31a. That is, a total of two work openings 34 are formed in each of the post protection covers 30 and 31, each having a substantially circular shape in plan view. Each of the working openings 34 is for screwing the fixing nut 23 to the battery posts 21 and 22. For example, a tool or the like (not shown) for rotating the fixing nut 23 for screwing is used. Through.

Each of the battery terminals 40, 41
Are formed in required shapes that can be inserted into the corresponding terminal openings 32 and 33.

That is, the battery terminal 40 of, for example, a positive electrode on the left side of FIG.
Rotation-preventing ribs 43 having a shape and dimensions corresponding to the second rib grooves 32a protrude in the fitting direction. Thus, the positive electrode battery terminal 40 can be inserted only into the terminal opening 32 of the post protection cover 30, and the terminal opening 3 of the post protection cover 31.
3 cannot be fitted and inserted, and unintended rotation of the battery terminal 40 in a horizontal plane due to rotation of the fixing nut 23 can be reliably prevented.

A battery terminal 41 having, for example, a negative pole on the right side in FIG. 1 is provided with a terminal opening 33 of the post protection cover 31 on the upper surface of the flat plate portion 44 on the left edge in FIG.
A rotation preventing rib 45 having a shape and a size corresponding to the rib groove 33a is protruded along the insertion direction. As a result, the negative electrode battery terminal 41 can be inserted only into the terminal opening 33 of the post protection cover 31, cannot be inserted into the terminal opening 32 of the post protection cover 30, and has the fixing nut 23. Inadvertent rotation of the battery terminal 41 in the horizontal plane due to rotation can be reliably prevented.

In the flat plate portions 42, 44 of the battery terminals 40, 41, terminal openings 32, 33 are provided.
A connection groove 46 and a locking claw 47 having a U-shape in a plan view are provided at the distal end in the insertion direction into the connector.

The connection groove 46 is opened at the front end side in the insertion direction of each battery terminal 40, 41 into each terminal opening 32, 33, and each battery terminal is inserted into the corresponding terminal opening 32, 33. 40, 41
, The battery posts 21 and 22 are fitted to obtain an electrical connection. The locking claws 47 project from the lower surfaces of the flat plates 42, 44 of the battery terminals 40, 41 in FIG.
As the battery terminals 40 and 41 are fitted into the battery terminals 2 and 33, the battery terminals 40 and 41 are locked by the locked portions 27 of the battery body 20.

Each of the battery terminals 40, 41
Are inserted into the corresponding terminal openings 32 and 33,
In a state where the battery posts 21 and 22 are fitted in the connection grooves 46, the respective battery posts 21 and 22 are screwed into the battery posts 21 and 22 through the working openings 34 of the battery body 20. 22.

Next, the connection procedure of the battery terminal connection structure of the present embodiment will be described. First, when the battery terminals 40 and 41 are connected to the corresponding battery posts 21 and 22 of the battery body 20, the positive battery terminal 40 is fitted into the terminal opening 32 of the post protection cover 30. Along with this fitting, the battery post 21 is fitted into the connection groove 46 of the battery terminal 40 and is electrically connected, and the locking claw 47 of the battery terminal 40 is
It is locked on the edge of the locked portion 27 (see FIG. 3).

At this time, even if the positive battery terminal 40 is erroneously inserted into the terminal opening 33 of the post protection cover 31, it cannot be inserted due to the difference in shape. Therefore, battery terminal 4
0 is not connected to the battery post 22 by mistake in polarity. In addition, the battery terminal 40 of the positive pole
In the state of being inserted into the terminal opening 32 of the post protection cover 30, there is almost no fear of falling off. Therefore,
Good workability is ensured.

Next, a fastening tool is hung on the fixing nut 23 previously screwed to the battery post 21 through the working opening 34 of the post protection cover 30, and the fixing nut 23 is rotated and tightened. Thus, the battery terminal 40 is securely fixed to the battery post 21.

At this time, since the locking claw 47 of the battery terminal 40 is locked to the locked portion 27, the battery terminal 40 can be opened by the terminal opening of the post protection cover 30 before being fixed by the fixing nut 23. Inconveniences such as dropping out of the device 32 can be reliably prevented. In addition, the rib 43 for preventing rotation of the battery terminal 40 is provided.
Is fitted in the rib groove 32 a of the terminal opening 32 of the post protection cover 30, so that careless rotation of the battery terminal 40 in the horizontal plane due to rotation of the fixing nut 23 is reliably prevented. can do.
Therefore, there is no need for the operator to hold the battery terminal 40 with one hand, and good workability can be obtained.

Also, as with the above-described positive electrode battery terminal 40, the negative electrode battery terminal 41 is provided with good workability without erroneous polarity, and is used for the terminal of the post protection cover 31. Through the opening 33, the negative pole battery post 22
Fixed to

Next, a second embodiment of the battery terminal connection structure of the present invention will be described with reference to FIGS. FIG. 4 is a perspective view of a main part showing a connection structure of a battery terminal of the present embodiment, and FIG. 5 is a sectional view of a main part in FIG.

As shown in FIGS. 4 and 5, the connection structure of the battery terminal according to the present embodiment is such that the fixing nut 23 is integrally fitted or inserted on the virtual center axis of the opening closing knob 50 made of synthetic resin or the like. It is provided by molding. The opening closing knob 50 is rotatable by manual operation, and closes the working opening 34 of the battery main body 20 as the fixing nut 23 is screwed and tightened to the battery posts 21 and 22.

That is, when the fixing nut 23 is tightened (not shown), the O-ring 51 (or the lower surface of the opening / closing knob 50) provided on the lower surface in FIG. By contacting the upper surfaces 30a, 31a of the post protective covers 30, 31, the working openings 34 are formed.
Close. Thereby, good waterproofness and dustproofness of the working opening 34 can be secured. Further, a tool mounting portion 52 formed in a hexagonal nut shape protrudes from the virtual center axis of the fixing nut 23 in the opening closing knob 50. The tool mounting part 52 is provided with the fixing nut 2.
This is for using a tightening tool such as a hexagon wrench for rotating 3 as necessary. Other configurations and operations are the same as those in the first embodiment.

As described above, according to the above embodiments,
Openings 3 for each terminal of post protection covers 30 and 31
2, 33 are battery terminals 4 of the corresponding polarity.
0, 41 can be inserted and each battery terminal 40, 41 has a corresponding terminal opening 32, 33.
It is formed in a required shape that can be inserted into the device. Therefore, it is possible to reliably prevent erroneous connection to the battery posts 21 and 22 due to the polarity difference between the battery terminals 40 and 41.

Also, as the battery terminals 40 and 41 are inserted into the corresponding terminal openings 32 and 33 of the post protective covers 30 and 31, respectively, they are provided at the tips of the battery terminals 40 and 41 in the fitting direction. Hook 4
7 is locked to the locked portion 27 of the battery body 20. Therefore, before fixing by the fixing nut 23, the battery terminals 40, 41 are closed by the terminal openings 32, 3.
3 does not fall off, and the operator does not need to hold the battery terminals 40 and 41 when screwing the fixing nut 23.

Further, the ribs 43 and 45 for preventing rotation of the battery terminals 40 and 41 are provided with the terminal openings 32 and 3.
3 are fitted into the rib grooves 32a, 33a. Accordingly, it is possible to reliably prevent the battery terminals 40 and 41 from being inadvertently rotated in the horizontal plane due to the rotation caused by the screwing of the fixing nut 23. Thereby, good workability at the time of connecting the battery terminals 40 and 41 can be secured.

Further, according to the first embodiment, since each of the post protection covers 30, 31 is detachably provided separately from the battery main body 20, the post protection covers 30, 31 are provided separately.
31 can be easily formed completely separately from the battery main body 20, and the cost can be reduced.

The battery posts 21 and 22 of each polarity are also provided.
2 is provided in each recess 26 so that the tip does not protrude outward from the upper surface of the battery body 20 in FIG.
The battery main body 20 does not protrude from the working openings 34 of the post protection covers 30, 31 which are flush with the upper surface in FIG. Therefore, the battery posts 21 and 22 can be reliably protected from short-circuiting and damage due to careless contact with a fastening tool or the like.

According to the second embodiment, the fixing nut 23 for fixing the battery terminals 40 and 41 to the battery posts 21 and 22 by screwing is further provided.
In addition, an opening closing knob 50 for closing the working opening 34 in accordance with the screw engagement with the battery posts 21 and 22 is integrally provided. Accordingly, it is possible to ensure both good screwing workability of the fixing nut 23 through the working opening 34 and high waterproofness and dustproofness by closing the working opening 34 after the work.

When the fixing nut 23 is screwed into the battery posts 21 and 22, the opening closing knob 50 is closed.
Can be directly rotated manually to tighten the fixing nut 23, and a required tool is fitted to the tool mounting portion 52 of the opening closing knob 50, and the fixing nut 23 is inserted through the tool. It can also be tightened.

Further, in the battery structure of each of the above-described embodiments, the battery terminals 40 and 41 are connected to the battery posts 21 and 22 by the fixing nuts 23 screwed to the battery posts 21 and 22 erected on the battery body 20. The most common thing to fix to 22,
The present invention can be applied to battery structures having various configurations, and can obtain a remarkable effect in terms of versatility.

In each of the above embodiments, the post protective covers 30 and 31 each have two side surfaces which are provided substantially perpendicularly from two edges of the substantially square upper surfaces 30a and 31a.
Into the respective concave portions 26 formed in the corner portions 24 and 25 of the battery main body 20, and the respective post protection covers 3
Although the outer surfaces of 0 and 31 are configured to be flush with the outer wall surface of the battery body 20, the present invention is not limited to the above configuration.

That is, the concave portion 26 is formed in the battery body 20.
, A battery post is projected from the upper surface of the battery body 20, and a post protection cover (not shown) having four side surfaces which are respectively provided at substantially right angles from four edges of the substantially square upper surface is provided. Alternatively, the battery post may be covered so as to surround the battery post. According to this configuration, the present invention can be easily applied to a general battery structure having no concave portion 26 at the corner of the battery main body 20, and high versatility can be obtained.

[0055]

According to the battery terminal connection structure of the present invention as described above, the following remarkable effects can be obtained. That is, according to the first aspect of the present invention, the battery main body includes a positive pole and a negative pole battery post, and a post protection cover that is detachably provided separately from the battery main body and covers each battery post. Equipped, each said post protection cover,
A terminal opening formed in a required shape dedicated to a positive pole or a negative pole so that only a battery terminal of a corresponding polarity can be inserted, and each battery terminal can be inserted into a corresponding terminal opening. It is formed in a required shape, and has a connection groove at the end in the insertion direction into the terminal opening to be fitted to the battery post to obtain an electrical connection.

Accordingly, the positive or negative battery terminals respectively connected to the ends of the electric wires are respectively inserted into the corresponding terminal openings of the post protection cover, and the battery posts are inserted into the connection grooves at the ends thereof. Are combined. At this time, even if the battery terminal is erroneously inserted into an uncorresponding terminal opening, it cannot be inserted due to a difference in shape. Therefore, erroneous connection due to a difference in polarity can be reliably prevented, and good workability can be ensured. In addition, since each post protection cover is detachably provided separately from the battery body, each post protection cover can be easily formed, and cost can be reduced.

According to the second aspect of the present invention,
A locked portion for locking each battery terminal is provided near each battery post of the battery body, and a leading end of each battery terminal is inserted into the battery post through a corresponding terminal opening of the post protection cover. Accordingly, a locking claw locked to the locked portion is provided. Therefore, with the insertion of each battery terminal into the corresponding terminal opening of the post protection cover,
A locking claw provided at the tip of the battery terminal in the fitting direction is locked to a locked portion provided near each battery post of the battery body. Therefore, troubles such as the battery terminal falling out of the terminal opening during the work can be reliably prevented, and good workability can be obtained.

According to the third aspect of the present invention,
Each battery terminal is provided with a rotation preventing rib protruding in the direction of insertion into the terminal opening, and each terminal opening of the battery body has a rib groove for inserting the rotation preventing rib. Is provided. Therefore, when the battery terminal of each pole is inserted into the terminal opening of the corresponding post protection cover, the anti-rotation rib protruding along the direction of insertion into each terminal opening is inserted into the terminal opening. It is fitted into the rib groove. Therefore, inadvertent rotation of each battery terminal in, for example, a horizontal plane during the operation is reliably prevented, and good workability can be obtained.

According to the fourth aspect of the present invention,
The battery post of each polarity is provided with a screwing member that is inserted into the corresponding terminal opening and fixes each battery terminal fitted to the battery post by screwing to the battery post. A work opening for screwing each screw member is provided, and each screw member is integrally provided with an opening closing member for closing the work opening with screwing to the battery post. It is provided in. Therefore, each battery terminal is fixed by being screwed into the battery post in a state where the battery post is inserted into the corresponding terminal opening and the battery post is fitted into the connection groove. With the screwing of the screwing member to the battery post, an opening closing member provided integrally with the screwing member closes the working opening. Therefore, high waterproofness and dustproofness are ensured by closing the working opening after the work.

Further, according to the fifth aspect of the present invention,
Each of the opening closing members can be manually operated from the outside, and is provided with a tool mounting portion to which a required tool for screwing the screwing member can be mounted. Therefore, each battery terminal is inserted into the corresponding terminal opening, and the battery post is fitted in the connection groove.
By manually rotating the opening / closing member integrally provided with the screwing member from the outside or by operating through a required tool attached to the tool mounting portion of the opening / closing member, the opening / closing member is screwed to the battery post. Is done. Accordingly, good screwing workability of the screwing member can be obtained, and high waterproofness and dustproofness can be both ensured by closing the work opening after the work.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part showing a connection structure of a battery terminal according to a first embodiment of the present invention.

FIG. 2 is a perspective view of a main part showing a recess and a battery post in FIG. 1;

FIG. 3 is a sectional view of a main part showing a locked portion and a locking claw in FIG. 1;

FIG. 4 is a perspective view of a main part showing a connection structure of a battery terminal according to a second embodiment of the present invention.

FIG. 5 is a sectional view of a main part in FIG. 4;

FIG. 6 is a plan view illustrating a conventional cord terminal connection structure of a battery.

FIG. 7 is a perspective view of a main part in FIG. 6;

[Explanation of symbols]

 Reference Signs List 20 battery body 21, 22 battery post 23 screw member (fixing nut) 24 corner (left corner) 25 corner (right corner) 26 recess 27 locked part 30, 31 post protection cover 32, 33 terminal Opening 32a, 33a Rib groove 34 Working opening 40, 41 Battery terminal 42, 44 Flat plate 43, 45 Rotation preventing rib 46 Connection groove 47 Locking claw 50 Opening closing member (knob for closing opening) 51 O-ring 52 Tool mounting part

Claims (5)

[Claims] 1. A battery terminal connection structure for connecting a positive or negative battery terminal connected to an end of an electric wire to a battery post of a corresponding polarity of a battery main body, wherein the battery main body has a positive pole. And a negative pole battery post, and a post protection cover which is detachably provided separately from the battery main body and covers each of the battery posts, wherein each of the post protection covers includes only the battery terminal having a corresponding polarity. A terminal opening formed in a required shape dedicated to a plus pole or a minus pole so that the battery terminal can be inserted, and each of the battery terminals is formed in a required shape that can be fitted in the corresponding terminal opening. At the front end in the insertion direction into the terminal opening. A connection structure for a battery terminal, comprising a connection groove fitted to the battery post to obtain an electrical connection. 2. A locked portion for locking each of the battery terminals is provided in the vicinity of each of the battery posts of the battery main body, and a tip of each of the battery terminals is provided with a corresponding one of the post protection covers. 2. The connection structure for a battery terminal according to claim 1, wherein a locking claw locked to the locked portion is provided as the terminal post is inserted into the battery post from the terminal opening. 3. Each of the battery terminals is provided with a rotation preventing rib protruding along a direction of insertion into the terminal opening, and the terminal opening of the battery body is provided with the rotation preventing rib. The connection structure for a battery terminal according to claim 1, further comprising a rib groove into which the rib is inserted. 4. The respective battery terminals of the respective polarities are fitted into the corresponding battery openings by being inserted into corresponding terminal openings, respectively.
A screw member fixed by screwing to the battery post is provided, and each of the post protection covers is provided with a working opening for screwing the screw members, and each of the screw members is 4. The connection structure for a battery terminal according to claim 1, wherein an opening closing member that closes the working opening when screwed into the battery post is provided integrally. . 5. The apparatus according to claim 1, wherein each of the opening closing members is manually operable from outside, and is provided with a tool mounting portion capable of mounting a required tool for screwing the screwing member. A connection structure for a battery terminal according to claim 4.