JPH10270109A - Flat terminal and connection fixing structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flat terminal and a connection fixing structure wherein an electric contact section is brought into good contact with an electric conductor to be connected and fixed by providing an elastic contact piece for energizing a connection terminal to a rotation stopping piece side in the electric contact section and a supporting piece for the connection terminal in the rotation stopping piece. SOLUTION: When the rotation stopping piece 27 of a flat terminal 21 is inserted into the attaching hole 35 of a bus bar 33, a downward elastic contact piece 26 is elastically deformed upward to energize the bus bar 33 downward, and a supporting piece 28 is engaged with the engaging section of a U-shaped connection terminal 32a to energize this upward. The bus bar 33 and the connection piece 32a held between the elastic contact piece 26 and the supporting piece 28 are brought into sufficient contact with each other, and the contact thereof is made much stronger when a bolt 37 is screwed into a nut 36 via insertion holes 25, 34 and 32b. Even if there is dispersion in the thickness of the bus bar 33 or the connection terminal 32a, the dispersion is absorbed in the range of elastic deformation of the elastic contact piece 26 and the supporting piece 28. Thus, sufficient contact between the flat terminal 21 and the connection terminal section is secured.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plate-shaped terminal and a connection fixing structure which are screwed and fixed to a mating connection terminal such as a bus bar or an electric circuit of a printed circuit board arranged in an electric connection box such as a fuse box. About.

[0002]

2. Description of the Related Art FIG. 7 shows a conventional plate terminal (Japanese Utility Model Laid-Open No. 4-47274). The plate-like terminal 1
It comprises an electric wire connection portion 3 for connecting the lead wire 2 and the like, and an electric contact portion 4 coupled to the electric wire connection portion 3 and provided with a screw insertion hole 9 in the center.

[0003] On both sides of the electric contact portion 4, a pair of stopping pieces 5, 5 are provided. The stop pieces 5, 5 have the ear pieces 6 protruding from the side of the electrical contact section 4, and are moved from the ear pieces 6 to the arm pieces 7.
And a hook 8 is coupled to the tip of the arm piece 7.

FIGS. 8 to 10 show that a plate-like terminal 1 is a bolt 1
FIG. 7 is a view showing a state where the connection box is connected and fixed to the electric connection box main body 11 by 0.

The electrical junction box body 11 has a panel wall 1
An L-shaped bus bar circuit 13 is provided along 2. The busbar circuit 13 is provided with a screw insertion hole 14 communicating with a hole provided in the panel wall 12, and a nut 15 is fixedly provided on the back surface of the panel wall 12. Further, the busbar circuit 13 is provided with a pair of mounting holes 16, 16 communicating with slit-shaped holes provided in the panel wall 12 on the left and right of the screw insertion hole 14.

[0006] In the electric connection box main body 11, the stopper pieces 5, 5 of the plate-like terminal 1 are attached to the mounting holes 1 of the bus bar circuit 13.
When the hooks 8 are inserted into the lead wires 6 and 16 and pulled down toward the lead wire 2 (direction A), the hooks 8 are brought into contact with and engaged with the back surface of the panel wall 12.
Then, the bolt 10 inserted from the screw insertion hole 9 side of the plate terminal 1 is screwed into the nut 15, and the plate terminal 1 is fixed to the bus bar circuit 13. In addition, the stopper pieces 5 and 5 inserted into the mounting holes 16 and 16 restrict the rotation of the terminal that occurs when the bolt 10 is screwed.

Another conventional example is Japanese Utility Model Laid-Open Publication No. 61-19766.
No. 2 discloses a plate-like terminal (not shown) similar to the above-mentioned prior art. In the plate-like terminal, a stopper is suspended from a side portion of the electric contact portion, and a stopper for the printed board is provided at a tip of the stopper. Further, the printed circuit board is provided with an annular connection portion having a screw insertion hole at the center and connected to the electric path, and a pair of mounting holes is provided on the left and right of the screw insertion hole. The plate-shaped terminal is fixedly fastened to the printed circuit board by inserting a restraining piece into the mounting hole and inserting a bolt into the screw insertion hole. The terminal of the plate-shaped terminal is stopped by the stopper, and the terminal is prevented from coming off from the printed circuit board by the retaining part provided at the tip of the stopper.

[0008]

In the above-mentioned prior art, the dimensions of the hook portion and the retaining portion provided at the tip of the restraining piece are defined, so that the hook bar and the printed board are not used. If there is a variation in the thickness, contact with the plate-shaped terminal cannot be secured. That is, when the plate-shaped terminal is screwed and fixed, if the bolts are not completely tightened, the plate-shaped terminal cannot secure sufficient contact with the electric conductor, causing a problem of poor contact. there were.

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, an object of the present invention is to provide a plate-shaped terminal and a connection fixing structure having a structure in which an electric contact portion always makes good contact with an electric conductor to be connected and fixed. And

[0010]

According to a first aspect of the present invention, there is provided a plate-shaped terminal connected to an electric contact portion having a screw insertion hole by an electric wire connection. A state in which a pair of opposing rotation-stopping pieces is provided on both side edges along the axial direction of the electric contact section, and a mating connection terminal section is superimposed on the rotation-stopping piece side of the electric contact section. In the plate-like terminal to be screwed and fixed, the electric contact portion is provided with an elastic contact piece for urging the connection terminal portion toward the rotation-stopping piece, and the rotation-stopping piece is a support piece for the connection terminal portion. It is characterized by having provided.

In the above structure, the electric contact portion is provided with an elastic contact piece for urging the mating connection terminal portion toward the rotation stop piece, and the rotation stop piece is provided with a support piece for the connection terminal portion. The elastic contact piece urges the other connecting terminal portion supported by the support piece. Therefore, sufficient contact between the plate terminal and the connection terminal portion can always be sufficiently ensured.

According to a second aspect of the present invention, the elastic contact piece is formed so as to be bent obliquely from the axial end of the electric contact portion toward the rotation stopping piece.

[0013] Since the elastic contact piece is formed to be bent obliquely from the axial end of the electric contact portion toward the rotation stop piece side, the elastic contact piece can be formed with a simple structure, and the plate-like terminal can be formed. An effective elastic contact piece structure can be applied to secure contact between the elastic contact piece and the mating connection terminal portion.

According to a third aspect of the present invention, the elastic contact piece is provided with a second screw insertion hole communicating with the screw insertion hole of the electric contact portion.

According to the second aspect of the present invention, since the second screw insertion hole communicating with the screw insertion hole of the electric contact portion is provided in the elastic contact piece, the elastic contact piece can obtain a stable contact by screw tightening. As a result, a more effective structure of the elastic contact piece can be applied.

The present invention according to claim 4 is characterized in that a plurality of the elastic contact pieces are provided in a chrysanthemum seat shape from a peripheral edge of the electric contact portion toward the rotation stopping piece side.

Since a plurality of elastic contact pieces are provided in a chrysanthemum shape from the peripheral edge of the electric contact portion toward the rotation stopping piece, the contact area with the mating connection terminal portion is increased, and sufficient contact is ensured. For this purpose, an effective structure of the elastic contact piece can be applied.

According to a fifth aspect of the present invention, the elastic contact piece is provided between the peripheral edge of the electric contact portion and the screw insertion hole.
It is characterized in that it is cut and raised toward the rotation restraining piece via a character-shaped slit.

Since the elastic contact piece is cut and raised toward the rotation stop piece side through a C-shaped slit provided between the peripheral edge of the electric contact portion and the screw insertion hole, the material can be formed with a simple structure. The elastic contact piece can be formed with good yield, and the elastic contact piece serves as a screw tightening portion, so that stable contact can be obtained and an effective elastic contact piece structure can be applied.

According to a sixth aspect of the present invention, the support piece is formed by folding back from the free end of the rotation stop piece toward the electric contact portion.

Since the support piece is formed by folding back from the free end of the rotation stop piece toward the electrical contact portion, the support piece can be formed with a simple structure, and is accommodated between the rotation stop pieces. Since the mating connection terminal portion having such a small width can be supported, an effective support piece structure can be applied to obtain sufficient contact.

According to a seventh aspect of the present invention, the support piece is formed so as to be cut and raised inward from the rotation stopping piece via a slit.

The supporting piece is formed by cutting and raising inward from the rotation stopping piece through the slit.
Can be applied to the structure of the support piece described in the above.

According to an eighth aspect of the present invention, the support piece is formed so as to be elastically deformable.

Since the supporting piece is formed so as to be elastically deformable, even if the mating connection terminal has a thickness variation,
It is possible to apply an effective support piece structure that absorbs the variation within an elastically deformable range and obtains stable contact.

The ninth aspect of the present invention is characterized in that the electric contact portion is formed in a round shape.

According to a tenth aspect of the present invention, the connection terminal portion fixed to the electric contact portion is provided with a mounting hole for the pair of rotation restricting pieces.

According to the eleventh aspect of the present invention, the connecting terminal portion on the mating side is formed to have a width which can be inserted and removed between the pair of rotation stopping pieces, and the supporting edges are provided on both side edges thereof. It is characterized in that an engagement projection for engaging with the piece is provided, and the connection terminal portion is formed in a U-shaped cross section.

The electric contact portion is formed in a round shape, and a connection hole for a pair of rotation stoppers is provided in a mating connection terminal portion fixed to the electric contact portion. In addition, the mating connection terminal portion is formed to have a width that can be inserted and removed between the pair of rotation stopping pieces, and engagement protrusions that engage with the support pieces are provided on both side edges thereof. The connection terminal portion is formed in a U-shaped cross section. Therefore, it can be screwed and fixed to the electric contact box or the printed circuit board in the same manner as in the prior art, and further screwed to the mating connection terminal portion having a width that can be inserted and removed between the pair of rotation stoppers. Can be fixed.

In order to solve the above-mentioned problems, a connection fixing structure for connecting a plate-shaped terminal and a mating connection terminal portion according to the present invention includes:
As described in claim 12, an electric wire connection portion is provided continuously to the electric contact portion having the screw insertion hole, and a pair of rotation stop pieces opposing each other on both sides along the axial direction of the electric contact portion. And a connection terminal plate portion provided with mounting holes for the pair of rotation stoppers across both sides of the screw insertion hole,
A connection and fixing structure for connecting to an electric component having a connection terminal portion having a removable width between the pair of rotation stoppers, wherein an electric contact portion of the plate-like terminal is formed in a round shape, and The portion is provided with an elastic contact piece cut and raised toward the rotation-stopping piece through a C-shaped slit provided between the periphery thereof and the screw insertion hole, and the rotation-stopping piece has Is provided with a support piece cut and raised toward the inside through a slit, the plate-shaped terminal, the elastic contact piece urges the connection terminal plate to the rotation stop piece side, and the support piece is The connection terminal portion is supported through the mounting hole, and the connection terminal plate and the connection terminal portion are screwed and fixed to the electric contact portion in a state where the connection terminal plate and the connection terminal portion overlap each other. .

In the above configuration, the plate-like terminal has a round electric contact portion. The electric contact portion is provided with an elastic contact piece cut and raised toward the rotation stopping piece through a C-shaped slit provided between the peripheral edge and the screw insertion hole. The rotation stopper is provided with a support piece cut and raised inward through a slit. The plate terminal is
The elastic contact piece urges the connection terminal plate to the rotation stop piece side, the support piece supports the connection terminal section through the mounting hole, and the connection terminal plate and the connection terminal section are placed on the rotation stop piece side of the electric contact section. The screws are fixed in a stacked state. Therefore, the connection between the plate terminal and the connection terminal plate and the connection terminal portion can be sufficiently ensured by this connection fixing structure.

[0032]

An embodiment of the present invention will be described below with reference to the drawings. 1 to 3 are views showing one embodiment of a plate-like terminal of the present invention, and FIGS.
FIG. 2 is a diagram illustrating a state where the plate-shaped terminals illustrated in FIG. 1 are connected and fixed.

The plate-like terminal 21 is a round plate terminal for an automobile, and is a wire connecting portion 23 for crimping and connecting a lead wire 22 or the like.
And a round plate-shaped electric contact portion 24 coupled to the electric contact portion. The plate-like terminal 21 is manufactured by pressing from a thin metal plate having elasticity such as copper or a copper alloy (such as beryllium-copper and brass).

At the center of the electric contact portion 24, a screw insertion hole 25 for inserting a bolt is formed.
And an intermediate portion between the screw insertion hole 25 and the screw insertion hole 25, that is, a C-shaped slit 24b is provided so as to surround the screw insertion hole 25 to form the elastic contact piece 26, and the elastic contact piece 26 is inclined downward. From the bent portion 24c.

On both sides of the electric contact portion 24, a pair of rotation stoppers 27, 27 are vertically provided so as to face each other. Supporting pieces 28 that are elastically deformable toward each other and upward inside are formed on the rotation stopping pieces 27 via slits 27a.

In the above configuration, the plate terminal 21 is connected to, for example, a fusible link box 30 shown in FIG. The main body 31 is provided with a fusible link accommodating chamber 31a whose upper end is open in the upper half of the main body 31,
In the lower half, a partition wall 31b formed below the accommodation chamber 31a
A bus bar 33 is provided in FIG.

The bus bar 33 is provided with mounting holes 35 on both sides thereof together with the screw insertion holes 34, into which the rotation stopping pieces 27 of the plate-like terminal 21 are inserted. On the back side of the bus bar 33, a screw insertion hole 34 is formed in the partition wall 31b.
And a nut 36 having the same central axis.

FIG. 5 shows a state in which the plate-like terminal 21 is connected to the main body 31 containing the fusible link 32.
When the rotation stopping piece 27 of the plate-like terminal 21 is inserted into the mounting hole 35 of the bus bar 33, the downward elastic contact piece 26 moves the bus bar 33 downward (the rotation stopping piece 27) while elastically deforming upward.
Side), the support piece 28 engages with the engaging portion of the U-shaped connection terminal 32a of the fusible link 32 which is urged downward, and urges it upward. Elastic contact piece 26
The bus bar 33 and the connection terminal 32a sandwiched between them by the and the support piece 28 are in sufficient contact with each other, and the bolt 37 is further inserted through the screw insertion holes 25 and 34 and the screw insertion hole 32b of the fusible link 32. When screwed into the nut 36 (FIG. 6), the nuts 36 come into stronger contact with each other.

As shown in FIG. 5, the contact between the bus bar 33 and the connection terminal 32a is sufficiently ensured by the elastic contact piece 26 and the support piece 28 even before the screwing of the plate terminal 21, as shown in FIG. If the bus bar 33 or the connection terminal 32a
Even if there is a variation in the wall thickness or the like, the variation can be absorbed within a range in which the elastic contact piece 26 and the support piece 28 can be elastically deformed, and sufficient contact can be ensured as described above.

In the above, the bus bar 3 is provided by the plate-like terminals 21.
3 and the example in which the three members of the U-shaped connection terminal 32a of the fusible link 32 are combined and connected, but the plate-shaped terminal 21 and the U-shaped connection terminal 32a, or
You may make it connect with the two members of the bus bar 33 in which the plate-shaped terminal 21 and the attachment hole 35 were provided. Further, it is also possible to connect the plate-like terminal 21 to a printed circuit board provided with a mounting hole and provided with an electric path.

[0041]

As described above, according to the first aspect of the present invention, the electric contact portion is provided with the elastic contact piece for urging the mating connection terminal portion to the rotation stopping piece side, Since the movement stopping piece is provided with the support piece for the connection terminal part, the elastic contact piece urges the other connection terminal part supported by the support piece. Therefore, the contact between the plate terminal and the connection terminal portion is always sufficiently ensured.

According to the second aspect of the present invention, since the elastic contact piece is formed obliquely from the axial end of the electrical contact portion toward the rotation-stopping piece side, the elastic contact piece can be formed with a simple structure. This is a plate-shaped terminal that can be formed and that employs a structure of an elastic contact piece that is effective for ensuring contact between the plate-shaped terminal and the mating connection terminal portion.

According to the third aspect of the present invention, in the second aspect of the present invention, the elastic contact piece is provided with the second screw insertion hole communicating with the screw insertion hole of the electric contact portion. Is a plate-like terminal to which a stable contact can be obtained by screwing, and a more effective structure of the elastic contact piece is applied.

According to the fourth aspect of the present invention, since a plurality of elastic contact pieces are provided in a chrysanthemum seat shape from the peripheral edge of the electric contact portion toward the rotation restraining piece, contact with the mating connection terminal portion is achieved. This is a plate-shaped terminal to which an area is large and to which an effective elastic contact piece structure is applied in order to secure sufficient contact.

According to the fifth aspect of the present invention, the elastic contact piece is formed so as to be cut and raised toward the rotation stop piece side through the C-shaped slit provided between the peripheral edge of the electric contact portion and the screw insertion hole. The elastic contact piece can be formed with a simple structure and the yield of the material is good, and the elastic contact piece becomes a screw tightening part, and stable contact is obtained, and the effective elastic contact piece is formed. This is a plate-shaped terminal to which the structure is applied.

According to the sixth aspect of the present invention, since the support piece is formed to be folded back from the free end of the rotation stop piece toward the electric contact portion, the support piece can be formed with a simple structure. A plate to which an effective support piece structure is applied in order to obtain sufficient contact because it can support even the narrow mating connection terminal portion that can be accommodated between the rotation stopping pieces. Terminal.

According to the seventh aspect of the present invention, since the support piece is cut and raised inward from the rotation stop piece via the slit, the structure of the support piece according to the sixth aspect is improved. In addition, it is a plate-shaped terminal to which a structure of a support piece with a better material yield is applied.

According to the eighth aspect of the present invention, since the supporting piece is formed so as to be elastically deformable, even if there is a variation in the thickness of the mating connection terminal portion, the thickness is within the elastically deformable range. It is a plate-shaped terminal to which the structure of an effective support piece that absorbs variation and obtains stable contact is applied.

According to the ninth to eleventh aspects of the present invention, the electric contact portion is formed in a round shape, and the mating connection terminal portion fixed to the electric contact portion is attached to the pair of rotation stoppers. A hole is provided. In addition, the mating connection terminal portion is formed to have a width that can be inserted and removed between the pair of rotation stopping pieces, and engagement protrusions that engage with the support pieces are provided on both side edges thereof. The connection terminal portion is formed in a U-shaped cross section. Therefore, it can be screwed and fixed to the electric contact box or the printed circuit board in the same manner as in the prior art, and further screwed to the mating connection terminal portion having a width that can be inserted and removed between the pair of rotation stoppers. Can be fixed.

According to the twelfth aspect of the present invention, the plate-like terminal has a round electric contact portion. The electric contact portion is provided with an elastic contact piece cut and raised toward the rotation stopping piece through a C-shaped slit provided between the peripheral edge and the screw insertion hole. The rotation stopper is provided with a support piece cut and raised inward through a slit. In the plate-like terminal, the elastic contact piece urges the connection terminal plate to the rotation stopping piece side, and the support piece supports the connection terminal portion through the mounting hole, and the connection terminal plate is placed on the rotation stopping piece side of the electric contact portion. It is fixed by screwing with the connection terminal part superimposed. Therefore, the connection between the plate terminal and the connection terminal plate and the connection terminal portion is sufficiently ensured by the connection and fixing structure.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a plate terminal according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG. 1;

FIG. 4 is a perspective view of a fusible link box for connecting and fixing the plate terminals of FIG. 1;

FIG. 5 is a cross-sectional view of C- in FIG.
It is C sectional drawing.

FIG. 6 is a sectional view taken along line DD of FIG. 5;

FIG. 7 is a perspective view of a conventional plate terminal.

FIG. 8 is a perspective view of a conventional electrical junction box to which plate terminals are connected and fixed.

FIG. 9 is a front view showing a connection state of a conventional example.

FIG. 10 is a sectional view taken along line EE of FIG. 9;

[Explanation of symbols]

 23 ... electric wire connection part 24 ... electric contact part 25 ... screw insertion hole 26 ... elastic contact piece 27 ... rotation stop piece 28 ... support piece

Claims (12)

[Claims] 1. An electric wire connection part is provided continuously to an electric contact part having a screw insertion hole, and a pair of opposing rotation stop pieces are provided on both side edges along the axial direction of the electric contact part. In a plate-like terminal, which is screwed and fixed in a state in which a mating connection terminal portion is superimposed on the rotation stopper one side of a contact portion, an elasticity for urging the connection terminal portion toward the rotation stopper half on the electric contact portion. A plate-like terminal, wherein a contact piece is provided, and a support piece for the connection terminal portion is provided on the rotation stopping piece. 2. The plate-like terminal according to claim 1, wherein the elastic contact piece is formed to be bent obliquely from an axial end of the electric contact portion toward the rotation-stopping piece. 3. The terminal according to claim 2, wherein the elastic contact piece is provided with a second screw insertion hole communicating with the screw insertion hole of the electric contact portion. 4. The plate-like terminal according to claim 1, wherein a plurality of said elastic contact pieces are provided in a chrysanthemum shape from a peripheral edge of said electric contact portion toward said rotation stopping piece. 5. The elastic contact piece is formed so as to be cut and raised toward the rotation restraining piece through a C-shaped slit provided between a peripheral edge of the electric contact portion and the screw insertion hole. The plate terminal according to claim 1, wherein: 6. The plate-like terminal according to claim 1, wherein the support piece is formed by folding inward from a free end of the rotation stopping piece toward the electric contact portion. 7. The plate-like terminal according to claim 1, wherein said support piece is formed by cutting and raising inward from said rotation stopping piece via a slit. 8. The plate terminal according to claim 1, wherein said support piece is formed so as to be elastically deformable. 9. The plate-like terminal according to claim 1, wherein said electric contact portion is formed in a round shape. 10. The plate-like terminal according to claim 1, wherein the connection terminal portion fixed to the electric contact portion is provided with a mounting hole for the pair of rotation stoppers. . 11. The connecting terminal portion on the other side is formed to have a width that can be inserted and removed between the pair of rotation stoppers, and both side edges thereof are engaged with the supporting member. The plate-like terminal according to claim 1, wherein a mating projection is provided, and the connection terminal portion is formed in a U-shaped cross section. 12. A plate-like structure in which an electric wire connection portion is provided continuously to an electric contact portion having a screw insertion hole, and a pair of opposing rotation stop pieces are provided on both side edges along the axial direction of the electric contact portion. A terminal, a connection terminal plate portion having mounting holes for the pair of rotation stoppers sandwiching both sides of the screw insertion hole, and a connection terminal portion having a width capable of being inserted and removed between the pair of rotation stoppers. A connection and fixing structure for connecting to an electric component having a circular shape, wherein an electric contact portion of the plate-shaped terminal is formed in a circular shape, and the electric contact portion has a C provided between a peripheral edge thereof and the screw insertion hole.
An elastic contact piece cut and raised toward the rotation stopping piece is provided through a character-shaped slit, and a support piece cut and raised toward the inside through the slit is provided on the rotation stopping piece. The plate-like terminal is configured such that the elastic contact piece urges the connection terminal plate toward the rotation-stopping piece, and the support piece supports the connection terminal section through the mounting hole, and the electrical contact section The connection and fixing structure, wherein the connection terminal plate and the connection terminal portion are screwed and fixed in a state where the connection terminal plate and the connection terminal portion are overlapped with each other on the one side of the rotation stopper.