JP2009170107A - Fixing structure of copper bar - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fixing structure of a copper bar in which the copper bar can easily be fixed on and removed from a terminal base. <P>SOLUTION: The fixing structure of a copper bar is provided with a terminal base in which a copper bar fixing portion is divided and formed by facing barrier ribs, a lock pin of an oval shape in a plane view which is supported, rotatable and unremovable, in the copper bar fixing portion, an electrode metal piece which is mounted on the terminal base and of which the connection portion is arranged on the facing barrier ribs with the lock pin in-between, and a copper bar which is arranged in the copper bar fixing portion and in which a lock pin inserting hole of a larger oval shape in a plane view than the lock pin is formed. The lock pin inserting hole is formed with a longitudinal axis matching a longitudinal direction of the copper bar, and when the lock pin in the lock pin inserting hole of the copper bar arranged in the copper bar fixing portion is rotated about 90 degrees, the longitudinal axis portion of the lock pin pressure-contacts with an inner circumference on a side of a short axis of the lock pin inserting hole and the copper bar is swelled and deformed to be press-bonded to the connecting portion and the barrier rib. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a copper bar (bus bar) mounting structure, and more specifically, a copper bar used for energizing a large current can be easily attached to and removed from a terminal block. Concerning structure.

  As disclosed in Patent Document 1 or Patent Document 2, today, a copper bar is used to achieve space saving that eliminates the need for wiring through which a large current flows, a wire harness, and the like from the viewpoint of improving connection reliability. Widely used as wiring.

  The conventional example of Patent Document 1 uses a copper bar to increase an allowable current value, reduce a voltage drop, and improve heat dissipation in a large-sized computer that requires a large current supply such as a power supply mechanism. In the conventional example of Patent Document 2, with the progress of electronic control of automobile parts, wiring parts of automobile control parts are made into a batch module, and copper bars are used to save installation space. It is.

Conventionally, when a copper bar is attached to a terminal block of a power supply device for energizing a large current, the copper bar is fixed to the terminal block by tightening a screw.
JP 63-182897 A JP-A-8-268254

  However, when fixing the copper bar to the terminal block by tightening the screw in this way, conventionally, the screw must be rotated many times to the specified torque and tightened. Since it was necessary to remove the screw by rotating it many times, the situation was that it took time and effort to attach / remove the copper bar.

  The present invention has been devised in view of such circumstances, and an object of the present invention is to provide a copper bar mounting structure in which a copper bar can be easily attached to / detached from a terminal block.

  In order to achieve such an object, the copper bar mounting structure according to claim 1 is supported by a terminal block in which a copper bar mounting portion is defined by opposing partition walls, and is rotatably supported within the copper bar mounting portion. An ellipse-shaped lock pin in plan view, an electrode fitting mounted on the terminal block and having a connection portion disposed on the partition wall facing the lock pin, and disposed in the copper bar mounting portion. The copper pin is formed with a larger elliptical lock pin insertion hole in plan view, and the lock pin insertion hole is formed so that the longitudinal direction of the copper bar coincides with the major axis and is disposed in the copper bar mounting portion. By rotating the lock pin in the lock pin insertion hole of the copper bar approximately 90 degrees, the long shaft portion of the lock pin comes into pressure contact with the inner periphery of the short pin side of the lock pin insertion hole, and the copper bar bulges out. Deform to separate the connection Wherein the pressure bonding to and.

  According to a second aspect of the present invention, in the copper bar mounting structure according to the first aspect, the long shaft portion of the lock pin can be engaged with the inner periphery of the short pin side of the lock pin insertion hole. A recess for a simple lock is provided, and the invention according to claim 3 is the copper bar mounting structure according to claim 1 or 2, wherein The inner surface of the partition wall in which the connecting portion is disposed is formed in a curved shape along the deformed shape of the copper bar.

  The invention according to claim 4 is the copper bar mounting structure according to any one of claims 1 to 3, wherein the lock pin insertion hole is slit along the longitudinal direction of the copper bar. According to a fifth aspect of the present invention, in the copper bar mounting structure according to the fourth aspect of the present invention, the slit is formed in a substantially circular shape in plan view on the tip side. The invention according to claim 4 is characterized in that, in the copper bar mounting structure according to claim 4, the slits are formed so that the width dimension is sequentially increased in the longitudinal direction of the copper bar.

  The invention according to claim 7 is the copper bar mounting structure according to any one of claims 1 to 6, wherein the lock pin has a retaining portion for preventing the copper bar from coming off. It is provided.

  According to the invention according to each claim, since the copper bar can be attached to or detached from the terminal block by rotating the lock pin at about 90 degrees, the mounting / removing of the copper bar is easier than before. I was able to do it.

  According to the second aspect of the present invention, when the copper bar is fixed to the terminal block by the lock pin, the long shaft portion of the lock pin engages with the concave portion for simple locking. Is prevented.

  According to the invention of claim 3, since the connecting portion of the electrode fitting and the side wall to which the connecting portion is attached have a concave shape in advance along the deformed shape of the copper bar, the deformed copper bar Is crimped to the connecting portion and the partition wall in a surface contact state, and as a result, the copper bar is securely fixed to the terminal block, and good electrical conductivity can be ensured.

  Further, according to the invention of claim 4, since the copper bar easily bulges and deforms in a curved shape by the rotation operation of the lock pin at approximately 90 degrees, the copper bar is securely fixed to the terminal block with high work efficiency. Therefore, according to the inventions according to claims 5 and 6, there is an advantage that the copper bar is more easily expanded and deformed.

  The invention according to claim 7 has an advantage that the copper bar can be surely prevented from coming off after the copper bar is fixed to the terminal block.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIGS. 1 to 6 show an embodiment of a copper bar mounting structure according to claims 1 to 5. In FIGS. 1 and 2, reference numeral 1 denotes a power supply device casing (not shown). In the terminal block, the present embodiment relates to a copper bar mounting structure that connects a plurality of power supply device terminal blocks with a plurality of copper bars, and the present specification will be described based on one terminal block 1.

  The terminal block 1 is a resin molded product, and five copper bar mounting portions 5 are partitioned and formed in one direction by six opposing partition walls 3 on the upper portion of the terminal block 1, as shown in FIG. The copper bar mounting portion 5 is formed with a thick center at the bottom and a convex portion 7 having a flat upper surface projecting between the side walls 3. And the electrode metal fitting 9 is each mounted | worn (molded) to the convex part 7 of each copper bar attaching part 5. FIG.

  As shown in FIGS. 3 to 5, the electrode fitting 9 is formed of a conductive plate material, and is similar to the pair of rectangular connection portions 9 a and 9 b that are attached to the inner periphery of the opposing side wall 3 of the copper bar mounting portion 5. A head portion 9d having a substantially U-shape in side view, which includes a bottom portion 9c formed in a rectangular shape, and a leg portion 9e bent downward from the head portion 9d into an L shape in side view and an inverted L shape in side view. The bottom portion 9 c is fixed to the upper surface of the convex portion 7, and the leg portion 9 e is molded on the terminal block 1. As shown in FIG. 3, the tip side of the leg portion 9e protrudes from a later-described recessed portion 11 provided on the back side of the terminal block 1 to the lower side of the terminal block 1, and the power supply device is connected to the tip end side of the leg portion 9e. The wiring (not shown) is soldered.

  As shown in FIG. 2, the connecting portions 9a and 9b are formed in a concave shape outwardly in advance along the deformed shape of the copper bar 13 to be described later, and similarly, the side walls to which the connecting portions 9a and 9b are attached. 3 also has a shape recessed in advance in a curved shape along the deformed shape of the copper bar 13.

  1 to 5, reference numeral 15 denotes a lock pin having a shaft portion 15a penetrating the bottom portion 9c of the electrode fitting 9. The lock pin 15 includes a columnar head portion 15b formed in an elliptical shape in plan view. The shaft portion 15a has a small diameter formed in a circular cross section, and a disk-shaped lock pin retaining portion 15c formed at the tip of the shaft portion 15a. A flat head screwdriver (not shown) is provided on the top of the head portion 15b. )) Groove 17 is provided. As shown in FIG. 3, the projection 7 is provided with an insertion hole 19 of the shaft portion 15 a, and a recess 11 that houses the lock pin retaining portion 15 c is provided on the back surface side of the projection 7. The insertion hole 19 is formed to have a diameter smaller than that of the lock pin retaining portion 15 c, and the lock pin 15 is supported so as to be rotatably removed within the copper bar mounting portion 5.

  As shown in FIGS. 1 and 2, a copper bar 13 is fixed in one direction in each copper bar mounting portion 5, but the lock pin is attached to the copper bar 13 as shown in FIGS. A lock pin insertion hole 21 having an elliptical shape in plan view that is slightly larger than the 15 heads 15 b is provided so that the longitudinal direction of the copper bar 13 coincides with the long axis.

  Further, the lock pin insertion hole 21 is formed with a concave portion 25 for simple locking with which the long shaft portion 23 of the head portion 15b of the lock pin 15 can be engaged, on the inner periphery of the short shaft side. The lock pin insertion hole 21 is provided with slits 27 in the front-rear direction along the longitudinal direction of the bar 13, and the leading ends of both slits 27 are formed in a substantially circular shape in plan view.

  Then, as shown in FIGS. 1 and 2, the head 15b of the lock pin 15 is inserted into the lock pin insertion hole 21 with the long axis direction aligned, and the copper bar 13 is disposed in the copper bar mounting portion 5, 2, when the lock pin 15 is rotated about 90 degrees with a flathead screwdriver, the long shaft portion 23 of the head portion 15 b of the lock pin 15 is pressed against the inner periphery of the short pin side of the lock pin insertion hole 21. Is bulged and deformed outwardly so as to be crimped to the connecting portions 9a and 9b and the partition wall 3.

  Thus, since the slit 27 is provided in the lock pin insertion hole 21 in the front-rear direction of the copper bar 13 as described above, the copper bar 13 can be easily bulged and deformed outward as shown in FIG. To do. Then, the copper bar 13 is fixed to the terminal block 1 at the same time as the copper bar 13 is bulged and deformed and crimped to the connecting portions 9a, 9b and the partition wall 3 formed in advance in a curved shape. The copper bar 13 and the wiring in the power supply device are electrically connected through the electrode fitting 9.

  At this time, the long shaft portion 23 of the head portion 15b of the lock pin 15 is engaged with the concave portion 25, so that inadvertent loosening of the lock pin 15 is restricted.

  On the other hand, when the copper bar 13 fixed to the terminal block 1 is removed for replacement, the lock pin is rotated by approximately 90 degrees as shown in FIG. When the axial direction of the bar 13 is matched, the bulging and deforming copper bar 13 returns to the shape before deformation, the pressure contact state between the connecting portions 9a and 9b and the partition wall 3 is released, and the copper bar 13 is connected to the copper bar mounting portion. 5 can be removed.

  Since the present embodiment is configured as described above, in order to attach the copper bar 13 to the terminal block 1, first, as shown in FIGS. 1 and 2, the major axis direction is aligned and the lock pin 15 is inserted into the lock pin insertion hole 21. The head 15 b is inserted, and the copper bar 13 is disposed in the copper bar mounting portion 5.

  Then, as shown in FIG. 2, when the lock pin 15 is rotated approximately 90 degrees with a flat-blade screwdriver, the long shaft portion 23 of the head portion 15b of the lock pin 15 is pressed against the inner periphery of the short pin side of the lock pin insertion hole 21, The copper bar 13 is bulged and deformed outward, and is crimped to the connecting portions 9a and 9b and the partition wall 3 that are formed in a curved shape in advance.

  Thus, the lock pin insertion hole 21 is provided with a slit 27 having a substantially circular shape at the front end side in a plan view, so that the copper bar 13 can be easily moved outward as shown in FIG. In this way, the copper bar 13 bulges and deforms, and the copper bar 13 is securely deformed to the terminal block 1 by being crimped to the connecting portions 9a and 9b and the partition wall 3 in a surface contact state. At the same time, the copper bar 13 and the wiring in the power supply device are conducted through the electrode fitting 9. Then, the long shaft portion 23 of the head portion 15b of the lock pin 15 is engaged with the recess 25, so that inadvertent loosening of the lock pin 15 is restricted.

  On the other hand, in order to remove the copper bar 13 fixed to the terminal block 1 in this manner, the lock pin 15 is rotated by approximately 90 degrees as shown in FIG. 2, and the long axis of the head 15b of the lock pin 15 and the copper bar 13 When the axial directions are matched, the bulging and deforming copper bar 13 returns to the shape before deformation, the pressure contact state between the connecting portions 9a and 9b and the partition wall 3 is released, and the copper bar 13 is removed from the copper bar mounting portion 5. Can be removed.

Thus, according to this embodiment,
[1] Since the copper bar 13 can be attached to or detached from the terminal block 1 by rotating the lock pin 15 by approximately 90 degrees, the copper bar can be attached / removed more easily than before. became.

Also,
[2] When the copper bar 13 is fixed to the terminal block 1 by the lock pin 15, the long shaft portion 23 of the head portion 15 b of the lock pin 15 is engaged with the concave portion 25, so that the lock pin 15 is inadvertently loosened. Is prevented.

And
[3] Since the connecting portions 9a and 9b of the electrode fitting 9 and the side wall 3 to which the connecting portions 9a and 9b are attached have a concave shape in advance along the deformed shape of the copper bar 13, the deformed copper bar 13 is bonded to the connecting portions 9a and 9b and the partition wall 3 in a surface contact state, and as a result, the copper bar 13 is securely fixed to the terminal block 1 and has an advantage that good electrical conductivity can be secured. .

Furthermore,
[4] Since the slit 27 having the tip side formed in a substantially circular shape in plan view is provided in the lock pin insertion hole 21 in the front-rear direction of the copper bar 13, the copper bar 13 can be easily bent by rotating the lock pin 15 approximately 90 degrees. As a result, the working efficiency is good and the copper bar 13 can be securely fixed to the terminal block 1.

  Instead of the slit 27, a straight slit 29 is provided in the front-rear direction of the copper bar 13 as shown by a solid line in FIG. 7, or a width in the longitudinal direction of the copper bar 13 as shown by a two-dot chain line in FIG. Although the slits 31 whose dimensions are sequentially increased may be provided, in consideration of facilitating the deformation of the copper bar 13, it is preferable to use the slits 27 and 31 to reduce the thickness of the deformed portion of the copper bar 13. .

  FIGS. 8 to 11 show a mounting structure of a copper bar according to one embodiment of claims 1 to 5 and claim 7, and this embodiment is a reliable prevention of the copper bar 13 fixed to the terminal block 1. Therefore, instead of the lock pin 15, a lock pin 15-1 provided with a copper bar retaining portion 15d on the head portion 15b is used, and the lock pin 15-1 except for the copper bar retaining portion 15d is used. Since the structure of the shaft portion 15a, the head portion 15b, the lock pin retaining portion 15c, the terminal block 1, the electrode fitting 9, the copper bar 13, etc. are the same as the embodiment of FIG. Are denoted by the same reference numerals and their description is omitted.

  The copper bar retaining portion 15d is composed of a flange having an elliptical shape in plan view and projecting sideways from the top of the head 15b like a screw head. As shown in FIG. 8, the copper bar retaining portion 15d is a copper bar retaining portion 15d. 13 protrudes above, and a groove 17 for a flathead screwdriver is provided at the top.

  The copper bar retaining portion 15d has the same major axis direction as the head 15b formed in an elliptical shape in plan view, and the major axis of the copper bar retaining portion 15d is the lock pin insertion hole of the copper bar 13. When aligned with the long axis of 21, the copper bar retaining portion 15 d can be inserted into the lock pin insertion hole 21. Then, as shown in FIG. 8, the copper bar retaining portion 15 d is inserted into the lock pin insertion hole 21, the head portion 15 b is inserted into the lock pin insertion hole 21, and the copper bar 13 is inserted into the copper bar mounting portion 5. After the arrangement, when the lock pin 15-1 is rotated approximately 90 degrees with a flat-blade screwdriver, the long shaft portion 23 of the head portion 15b of the lock pin 15-1 is on the short shaft side of the lock pin insertion hole 21 as in the above embodiment. While being in pressure contact with the inner periphery, the copper bar 13 is bulged and deformed outward and crimped to the connection portions 9a, 9b of the electrode fitting 9 and the partition wall 3, but the copper bar 13 protrudes above the copper bar 13. The copper bar retaining portion 15d faces the short axis direction of the lock pin insertion hole 21 and prevents the copper bar 13 from coming off upward.

  Further, when removing the copper bar 13 from the terminal block 1, as in the above embodiment, the lock pin 15-1 is rotated approximately 90 degrees so that the major axis of the copper bar retaining portion 15d and the axial direction of the copper bar 13 are aligned. You just need to match.

  As described above, according to the present embodiment, as in the embodiment of FIG. 1, the effects [1] to [4] can be obtained, and the copper bar 13 is fixed to the terminal block 1 after the copper bar 13 is fixed. 13 has an advantage that it can be surely prevented from coming off.

It is a front view of the attachment structure of the copper bar which concerns on one Embodiment of the Claim 1 thru | or 5 with which a copper bar attaches to a terminal block. It is sectional drawing of a terminal block and the copper bar attached to this. It is sectional drawing of a terminal block and the copper bar attached to this. It is a side view of an electrode metal fitting. It is a front view of an electrode metal fitting. It is a principal part expanded sectional view of a copper bar. It is a principal part expanded sectional view of the copper bar which concerns on one Embodiment of Claim 4 or Claim 6. It is a front view of the attachment structure of the copper bar which concerns on one Embodiment of Claim 1 thru | or Claim 5 and Claim 7. It is sectional drawing of a terminal block and the copper bar attached to this. It is a side view of an electrode metal fitting. It is a front view of an electrode metal fitting.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Terminal block 3 Bulkhead 5 Copper bar attaching part 7 Convex part 9 Electrode metal fittings 9a, 9b Connection part 9c Bottom part 9d Head part 9e Leg part 13 Copper bar 15,15-1 Lock pin 15a Shaft part 15b Head part 15c Lock pin prevention Portion 15d Copper bar retaining portion 17 Slot 19 for flat-blade screwdriver Insertion hole 21 Lock pin insertion hole 23 Long shaft portion 25 of lock pin head Recess 27 for simple locking

Claims (7)

A terminal block in which a copper bar mounting portion is defined by an opposing partition;
An oval-shaped lock pin in a plan view that is rotatably supported in the copper bar mounting portion, and
An electrode fitting mounted on the terminal block and having a connecting portion disposed on the partition wall facing the lock pin;
The copper bar is disposed in the copper bar mounting portion, and is formed of a copper bar in which a lock pin insertion hole having an elliptical shape in plan view larger than the lock pin is formed,
The lock pin insertion hole is formed by aligning the longitudinal direction and the long axis of the copper bar,
When the lock pin in the lock pin insertion hole of the copper bar disposed in the copper bar mounting portion is rotated approximately 90 degrees, the long shaft portion of the lock pin is pressed against the inner periphery of the short pin side of the lock pin insertion hole. An attachment structure for a copper bar, wherein the copper bar is bulged and deformed to be crimped to the connecting portion and the partition wall.   2. The copper bar mounting according to claim 1, wherein a recess for a simple lock that can be engaged with a long shaft portion of the lock pin is provided on an inner periphery on the short shaft side of the lock pin insertion hole. Construction.   The connection part of the said electrode metal fitting and the inner surface of the partition in which this connection part is arrange | positioned are formed in the curved shape along the deformation | transformation shape of a copper bar, The Claim 1 or Claim 2 characterized by the above-mentioned. Copper bar mounting structure.   4. The copper bar mounting structure according to claim 1, wherein a slit is provided in the lock pin insertion hole along a longitudinal direction of the copper bar. 5.   5. The copper bar mounting structure according to claim 4, wherein the slit is formed in a substantially circular shape in a plan view on a front end side.   5. The copper bar mounting structure according to claim 4, wherein the slits are formed so that the width dimension is sequentially increased in the longitudinal direction of the copper bar. The copper bar mounting structure according to any one of claims 1 to 6, wherein the lock pin is provided with a retaining portion for retaining the copper bar.

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