JP5675750B2 - Battery terminal - Google Patents

Description

  The present invention relates to a battery terminal that electrically connects a battery and a wire terminal.

  Conventionally, a battery terminal for connecting a battery post disposed on a surface of a battery such as a vehicle and a terminal of an electric wire such as a wire harness is known. Patent document 1 discloses this kind of battery terminal.

  The battery terminal (battery connection terminal) of Patent Document 1 is an electrical connection between a gripping part (electrode fitting part) for gripping a battery post, a stud bolt to which a terminal of an electric wire is attached, and the gripping part and the stud bolt. A plate-like member (wire terminal connecting portion).

  Generally, the stud bolt needs to be fixed in the rotation direction and the insertion / removal direction. In patent document 1, in order to fix a stud bolt to a rotation direction, it has the following structures. That is, a step is formed on the plate-like member of the battery terminal. Due to this step, a gap is formed between the plate-like member and the surface of the battery. The stud bolt is attached so that the head portion is positioned in this gap. Moreover, the head part of the stud bolt of patent document 1 is not a disk shape but a rectangular parallelepiped shape, and it can prevent that a stud bolt rotates because the said head part and plate-shaped member interfere.

  Moreover, in patent document 1, in order to fix a stud bolt in the insertion / extraction direction, after inserting a stud bolt into the through-hole of a plate-shaped member, the said through-hole is deform | transformed into the ellipse shape.

  In Patent Document 1, as another example of fixing a stud bolt, a plate-like member is bent into a U shape, and the stud bolt is sandwiched and fixed, or the plate-like member is bent so as to cover the head portion of the stud bolt. A method is disclosed.

JP-A-11-219696

  However, in the above configuration, it is necessary to bend the plate-like member in order to fix the stud bolt. This increases the size of the battery terminal. In addition, when a step is formed on the plate-like member and the stud bolt is fixed in the rotation direction, a stud bolt having a head portion that matches the size of the battery terminal is required, resulting in increased component costs.

  Furthermore, in Patent Document 1, since the process of fixing the stud bolt in the rotational direction and the process of fixing in the insertion / removal direction must be performed separately, the manufacturing process becomes complicated, the manufacturing cost increases, and the yield decreases. Such a problem may occur.

The present invention has been made in view of the above circumstances, and a main object of the present invention is to provide a battery terminal capable of holding a bolt in a rotating direction and an inserting / removing direction with a simple configuration.

Means and effects for solving the problems

  The problems to be solved by the present invention are as described above. Next, means for solving the problems and the effects thereof will be described.

According to the viewpoint of this invention, the battery terminal of the following structures is provided. That is, the battery terminal includes a grip portion, a plate-like member, and a bolt . The gripping part grips a battery post inserted inside. The plate-like member is electrically connected to the grip portion to form a through hole. The bolt is fixed in the rotational direction and the insertion / removal direction by being press-fitted into the through-hole so as to bite into the plate-like member. In addition, a holding protrusion, a holding groove, a ring portion, and a shaft portion are formed on the bolt in order from the head portion toward the screw tip side. The holding protrusion is a portion formed so as to protrude from the head portion toward the screw tip side. The holding groove is a groove-shaped portion formed between the holding protrusion and the ring portion. The ring portion is a portion formed between the holding groove and the shaft portion and having a diameter larger than that of the holding groove and the shaft portion. A part of the plate-like member enters the holding groove, and the holding projection bites into the plate-like member .

Thereby, since the said volt | bolt is fixed to a rotation direction and an insertion / removal direction only by press-fitting a volt | bolt , a volt | bolt can be fixed easily. Accordingly, since the battery terminal manufacturing method can be simplified, the manufacturing cost can be reduced and the yield can be improved. Moreover, since the process which bends a plate-shaped member like patent document 1 becomes unnecessary, the size of a battery terminal can be made small.

In the battery terminals, bolts, said retaining projection projecting into the non-circular can be fixed in the rotational direction by biting into the plate-like member is preferred when seen in the thickness direction of the plate-like member.

Thereby, it can fix in a rotation direction and an insertion / extraction direction using the bolt of a simple shape.

In the battery terminal, it is preferable that the bolt is press-fitted into the through hole so that at least a part of the head portion bites into the plate-like member.

Thereby, since the protrusion length of the volt | bolt from a plate-shaped member can be shortened, the size of a battery terminal can be made small.

The battery terminal preferably has the following configuration. That is, on the shaft portion of the bolt , there is a screw portion in which a screw groove is formed, and a mounting portion that is located between the screw portion and the head portion and that is pressed into and attached to the current sensor without using other members. And are formed. The attachment portion is not formed with a screw groove, and the attachment portion has a diameter larger than that of the screw portion.

  Thereby, since the diameter of the attachment portion is larger than that of the screw portion, the current sensor can be held by press-fitting the current sensor. Therefore, since another member for attaching the current sensor is not necessary, the number of parts can be reduced and the battery terminal manufacturing method can be further simplified.

In the battery terminal, it is preferable that a rotation restricting portion that engages with a current sensor attached to the bolt and restricts the rotation of the current sensor is formed on the plate-like member.

  This eliminates the need for a separate member for restricting the rotation of the current sensor, thereby reducing the number of parts and further simplifying the battery terminal manufacturing method.

  The battery terminal preferably has the following configuration. That is, the rotation restricting portion is a protruding portion protruding from the plate member. The plate-like member is formed with a plurality of protrusions that restrict the rotation of the current sensor.

  Thereby, the same battery terminal can be used even when the mounting position of the current sensor is different. That is, the versatility of the battery terminal can be improved.

In the battery terminal, it is preferable that no step is formed on the plate member and the plate member is flat.

That is, in the present invention, since the bolt can be fixed only by press-fitting, it is not necessary to bend the plate-like member. That is, a compact battery terminal in which no step is formed can be realized.

The perspective view which shows the structure of the battery terminal which concerns on one Embodiment of this invention. The perspective view of a volt | bolt . Sectional drawing which shows a mode when attaching a volt | bolt to a plate-shaped member. The perspective view which shows a mode when attaching a battery terminal to a battery post. The perspective view which shows a mode when attaching a current sensor and a terminal to a battery terminal. The perspective view which shows the modification of a battery terminal.

  Next, embodiments of the present invention will be described with reference to the drawings.

  The battery terminal 1 is disposed in an engine room of a vehicle or the like, and connects a battery post 71 of the battery 70 and a terminal 60 as shown in FIGS. The battery terminal 1 is formed by bending or the like on a plate member made of a suitable metal material having conductivity.

As shown in FIG. 1, the battery terminal 1 includes a grip portion 10, tightening portions 20 a and 20 b, a plate-like member 30, and a bolt 40. In addition, the holding | grip part 10, fastening part 20a, 20b, and the plate-shaped member 30 are integrally formed from the above-mentioned metal material.

  The holding part 10 is configured in a shape (end and annular shape) in which a flat plate is curved in an arc shape. The battery post 71 described above can be inserted inside the grip 10. The battery post 71 is generally formed in a conical shape or a cylindrical shape, and is provided on the upper surface of the battery 70.

  In addition, a plurality of fastening grooves 11 are formed on the inner surface (the surface that contacts the battery post 71, the inner wall surface) of the grip portion 10. When the battery terminal 1 is attached to the battery post 71, the tightening groove 11 bites into the surface of the battery post 71 to prevent the battery post 71 from coming off.

  The fastening portions 20 a and 20 b are formed in a pair so as to be integrally connected to the grip portion 20 at locations corresponding to both ends of the arc that is the outline of the grip portion 10. The fastening portions 20a and 20b are arranged substantially parallel to each other so as to sandwich the open side of the arc-shaped gripping portion 10, and a predetermined gap is formed therebetween.

  Further, the tightening portions 20a and 20b are formed in a rectangular shape so as to extend outward from the connection portion with the grip portion 10, and a penetrating shape into which a bolt (fastening tool) can be inserted at the center portion. Bolt mounting holes 21a and 21b are respectively formed. The bolt mounting holes 21a and 21b are arranged at positions corresponding to each other. By tightening the tightening portions 20 a and 20 b using bolts, the grip portion 10 can be deformed so that the diameter of the grip portion 10 is reduced, and the grip portion 10 and the battery post 71 can be fixed.

  The plate-like member 30 is a metal plate-like member, and is formed integrally with the grip portion 10 and is therefore electrically connected to the grip portion 10. Further, the plate-like member 30 has a flat plate shape, and no step is formed as in Patent Document 1. A through-hole 31 and a protruding portion 32 are formed in the plate-like member 30.

The through hole 31 is a hole that penetrates the plate-like member 30 in the thickness direction. Bolts 40 are attached to the through holes 31.

  The protruding portion 32 protrudes outward from the end surface of the plate-like member 30. In other words, the protruding portion 32 protrudes in a direction perpendicular to the thickness direction of the plate-like member 30. The protrusion 32 is provided to prevent the current sensor 50 from rotating.

The bolt 40 is a metal bolt to which the current sensor 50 and the terminal 60 are attached. The bolt 40 is electrically connected to the tightening groove 11 and the battery post 71 via the plate-like member 30. As shown in FIGS. 2 and 3, the bolt 40 is formed with a head portion 41, a holding protrusion 42, a holding groove (notch) 43, a ring portion 44, and a shaft portion 45.

  The head portion 41 is a disk-like member, and is formed thinner than a normal head portion in order to reduce (or eliminate) the amount of protrusion from the plate-like member 30.

  The holding protrusion 42 is a portion formed so as to protrude from the head portion 41 to the screw tip side. The holding protrusion 42 is not circular but has a star shape. The holding groove 43 is a groove-shaped part formed so as to be surrounded by the holding protrusion 42 and the ring part 44.

  The ring portion 44 is a portion formed so as to have a larger diameter than the holding groove 43 and the shaft portion 45 (that is, formed so as to protrude in a ring shape). As shown in FIG. 3, the screw tip side of the ring portion 44 is formed to be slightly inclined.

  The shaft portion 45 includes an attachment portion 45a and a screw portion 45b. The attachment portion 45 a is a portion for attaching the current sensor 50. Since the attachment portion 45a is formed to have a larger diameter than the screw portion 45b, the current sensor 50 can be attached by press-fitting. Further, no thread groove is formed in the attachment portion 45a.

The screw portion 45b is located on the screw tip side with respect to the attachment portion 45a, and a screw groove is formed. The screw part 45b can fix the current sensor 50 and the terminal 60 to the bolt 40 using a nut or the like.

The bolt 40 is press-fitted into the through hole 31 by a punch or the like. At this time, as shown in FIGS. 3A and 3B, the bolt 40 is inserted while the inclined portion of the ring portion 44 deforms the plate-like member 30. Here, when the bolt 40 is further inserted, the portion where the ring portion 44 is pushed enters (holds in) the holding groove 43, and the holding protrusion 42 also bites into the plate-like member 30. In the present embodiment, a part of the head portion 41 bites into the plate member 30.

Even if the bolt 40 receives a force in the rotation direction (see FIG. 1) because the holding projection 42 bites into the plate-like member 30, the holding projection 42 and the plate-like member 30 interfere with each other so that the bolt 40 does not rotate. . That is, the holding protrusion 42 has a function of fixing the bolt 40 in the rotation direction.

Since the holding projection 42 interferes with the plate-like member 30 when the bolt 40 is rotated unless it is a disc shape, the function of fixing the bolt 40 in the rotation direction can be exhibited. Therefore, the shape of the holding protrusion 42 is not limited to the shape shown in FIG. 2 and the like, and can be changed as appropriate.

On the other hand, the holding groove 43 that bite into the plate member 30, even if the bolt 40 is subjected to a force in the insertion and removal direction (see FIG. 1), since the wall surface and the plate-like member 30 of the holding groove 43 interferes bolt 40 does not move in the insertion / removal direction. That is, the holding groove 43 has a function of fixing the bolt 40 in the insertion / removal direction.

  Next, a flow when the battery terminal 1 is attached to the battery post 71 will be described. In addition, the attachment process shown here is an example, and you may change an order and a process suitably.

First, the worker attaches the bolt 40 to the plate-like member 30 by punching or the like as described above. Next, as shown in FIG. 4, the operator inserts bolts into the tightening portions 20 a and 20 b and aligns the grip portion 10 with the battery post 71. The timing for tightening the bolts may be at this stage or after the current sensor 50 or the like is attached.

  Next, the worker attaches the current sensor 50 to the battery terminal 1. As shown in FIG. 5, the current sensor 50 is formed with a bolt mounting hole 51 and a rib 52. The current sensor 50 includes an electric wire 53 for outputting the measurement result to the computer.

The bolt mounting hole 51 is a hole for inserting the bolt 40. The bolt mounting hole 51 is mounted such that its diameter is larger than that of the screw portion 45b and its diameter is slightly smaller than that of the mounting portion 45a. With this configuration, the current sensor 50 can be fixed simply by pushing the current sensor 50 (just by press-fitting).

  Two ribs 52 are formed on one surface of the current sensor 50 (the surface facing the battery terminal 1), and the distance between them is the same as or slightly larger than that of the protruding portion 32. The operator attaches the current sensor 50 so that the protrusion 32 is located between the ribs 52. As a result, even when a force in the rotation direction is applied to the current sensor 50, the rib 52 and the protrusion 32 interfere with each other, so that the rotation of the current sensor 50 can be prevented.

  Further, the plate-like member 30 is formed with three protrusions 32. This is because the mounting direction of the current sensor 50 may be different depending on the type of the battery 70, and the rotation of the current sensor 50 is prevented at the same battery terminal 1 even when the mounting direction is different.

Next, the worker attaches the terminal 60 to the battery terminal 1. A bolt mounting hole 61 is formed in the terminal 60, and the worker mounts the terminal 60 so that the bolt 40 is inserted into the bolt mounting hole 61. Thereafter, the operator fixes the terminal 60 by tightening the nut.

  The battery terminal 1 is attached to the battery post 71 by the above process.

As described above, the battery terminal 1 includes the grip portion 10, the plate-like member 30, and the bolt 40. The gripping part 10 grips the battery post 71 inserted inside. The plate-like member 30 is electrically connected to the grip 10 and a through hole 31 is formed. The bolt 40 is fixed in the rotation direction and the insertion / removal direction by being press-fitted into the through hole 31 so as to bite into the plate-like member 30.

Thus, since the bolt 40 simply by press-fitting the bolt 40 is fixed to the rotational direction and disconnecting directions, it is possible to easily fix the bolts 40. Therefore, since the manufacturing method of the battery terminal 1 can be simplified, the manufacturing cost can be reduced and the yield can be improved. Moreover, since the process which bends a plate-shaped member like patent document 1 becomes unnecessary, the size of the battery terminal 1 can be made small. Therefore, for example, even when the battery terminal 1 is attached to the battery 70 having a shape with corners cut off as shown in FIG. 4, the battery terminal 1 can be prevented from protruding.

Further, in the battery terminal 1 of the present embodiment, the bolt 40 is fixed in the rotational direction when the holding projection 42 protruding non-circularly in the thickness direction of the plate-like member 30 bites into the plate-like member 30. The bolt 40 is fixed in the insertion / removal direction by the plate-like member 30 biting into the holding groove 43 which is a notch other than the screw groove.

Thereby, it can fix in a rotation direction and an insertion / removal direction using the bolt 40 of a simple shape.

In the battery terminal 1 of the present embodiment, the bolt 40 is press-fitted into the through hole so that at least a part of the head portion 41 bites into the plate member 30.

Thereby, since the protrusion length of the volt | bolt 40 from the plate-shaped member 30 can be shortened, the size of the battery terminal 1 can be made small.

Further, in the battery terminal 1 of the present embodiment, the shaft portion 45 of the bolt 40 is positioned between the screw portion 45b in which the screw groove is formed and the screw portion 45b and the head portion 41, and the current sensor 50 is provided. An attachment portion 45a for attachment is formed. The attachment portion 45a is not formed with a screw groove and has a diameter larger than that of the screw portion 45b.

  Thereby, since the diameter of the attachment portion 45a is larger than that of the screw portion 45b, the current sensor 50 can be held by press-fitting the current sensor 50. Therefore, since another member for attaching the current sensor 50 is not required, the number of parts can be reduced, and the manufacturing method of the battery terminal 1 can be further simplified.

Further, in the battery terminal 1 of the present embodiment, the plate-like member 30 is formed with a protruding portion 32 that protrudes from the plate-like member 30. The protrusion 32 engages with a current sensor 50 (specifically, a rib 52) attached to the bolt 40, and regulates the rotation of the current sensor 50.

  This eliminates the need for another member for restricting the rotation of the current sensor 50, thereby reducing the number of parts and further simplifying the method for manufacturing the battery terminal 1.

  The preferred embodiment of the present invention has been described above, but the above configuration can be modified as follows, for example.

The shape of the plate-like member 30 and the bolt 40 described above is an example, and any shape can be used as long as it can be fixed to the plate-like member 30 by press-fitting the bolt 40. Of course, the shape of the gripping portion 10 and the gripping portion 20 is also arbitrary.

In the above embodiment, a part of the head portion 41 of the bolt 40 protrudes from the plate-like member 30, but the bolt 40 may be attached so that the head portion 41 is completely buried. In this case, the height of the battery terminal 1 can be further suppressed.

  The protrusions 32 formed on the plate-like member 30 and the ribs 52 formed on the current sensor 50 may have any shape as long as they can be engaged with each other. For example, a configuration in which two protruding portions 32 and one rib 52 are engaged with each other, or a configuration in which the protruding portions 32 are sandwiched by U-shaped protrusions instead of the ribs 52 may be employed.

  Further, the positions and the number of the protrusions 32 and the ribs 52 are arbitrary. Furthermore, the protrusion 32 is not an essential component, and the protrusion 32 may be omitted as shown in FIG.

  The shape of the battery 70 to which the battery terminal 1 is attached is arbitrary, and is not limited to the shape with the corners cut off.

DESCRIPTION OF SYMBOLS 1 Battery terminal 10 Holding part 11 Tightening groove 20a, 20b Tightening part 21a, 21b Bolt attachment hole 30 Plate-shaped member 31 Through-hole 32 Protrusion part (rotation regulation part)
40 bolt 41 head portion 42 holding projection 43 holding groove 44 ring portion 45 shaft portion 45a mounting portion 45b screw portion 50 current sensor 60 terminal 70 battery 71 battery post

Claims (7)

A gripping part for gripping the battery post inserted inside;
A plate-like member electrically connected to the grip portion and having a through-hole formed therein;
A bolt that is fixed in the rotational direction and the insertion / removal direction by being press-fitted into the through-hole so as to bite into the plate-like member;
Equipped with a,
The bolt is formed with a holding projection, a holding groove, a ring portion, and a shaft portion in order from the head portion toward the screw tip side.
The holding protrusion is a portion formed so as to protrude from the head portion toward the screw tip side, and j
The holding groove is a groove-shaped part formed between the holding protrusion and the ring part,
The ring portion is a portion formed between the holding groove and the shaft portion and having a diameter larger than that of the holding groove and the shaft portion,
A battery terminal , wherein a part of the plate-like member enters the holding groove, and the holding projection bites into the plate-like member . The battery terminal according to claim 1,
The battery terminal according to claim 1 , wherein the bolt is fixed in a rotating direction when the holding protrusion that is non-circular when viewed in the thickness direction of the plate-like member bites into the plate-like member. The battery terminal according to claim 1 or 2,
The bolt, battery terminal wherein at least a portion of the head portion is press-fitted in the through hole to bite into the said plate-like member. The battery terminal according to any one of claims 1 to 3,
Said shaft portion of said bolt,
A threaded portion formed with a thread groove;
Located between the said threaded portion said head portion, a mounting portion for mounting by press-fitting the current sensor without passing through the other member,
Is formed,
The battery terminal according to claim 1, wherein a screw groove is not formed in the attachment portion, and the attachment portion has a diameter larger than a screw thread of the screw portion. The battery terminal according to any one of claims 1 to 4,
The battery terminal, wherein the plate member is formed with a rotation restricting portion that engages with a current sensor attached to the bolt and restricts the rotation of the current sensor. The battery terminal according to claim 5, wherein
The rotation restricting portion is a projection projecting from said plate-like member,
The battery terminal, wherein the plate-like member is formed with a plurality of the protrusions for restricting the rotation of the current sensor. The battery terminal according to any one of claims 1 to 6,
A battery terminal, wherein no step is formed on the plate member , and the plate member is flat.

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