JP2944020B2 - Terminal fixture for electrical junction box - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal fixing device for an electric connection box for fixing a terminal of a fuse or a terminal of an electric wire to an electric connection box mounted on an automobile or the like together with a box body.

[0002]

2. Description of the Related Art FIG. 14 shows an example of a fuse box similar to that described in Japanese Utility Model Laid-Open No. 1-98458.
In the figure, 1 is a box body, 3 is a fuse (including a fusible link), 5 is a terminal of the fuse, 7 is an electric wire, 9 is a round terminal of an electric wire terminal, 11 is a terminal connection portion of the box main body, and 13 is a terminal. It is a bolt for tightening.

In this fuse box, a terminal fixture is formed from a bolt 13 and a nut (not shown) embedded in the terminal connection portion 11, the fuse 3 is inserted into the box body 1, and the terminal 5 of the fuse and the terminal 9 of the wire end are formed. Are jointly fastened to the terminal connection portion 11 with bolts 15.

[0004] FIG.
1 shows a terminal fixing device described in Japanese Patent Application Laid-Open Publication No. HEI 9-133, FIG. This terminal fixture is
The bolt receiving member 17 includes a bolt 15 and a bolt receiving member 17. The bolt receiving member 17 includes a wall 19 having an insertion hole 17 a formed therein.
A pair of elastic holding portions 2 provided on both sides of the wall portion 19
1 and 23. This bolt receiving member 17
Is fixed to the terminal connection portion, and the bolt 15 is inserted into the insertion hole 17.
16A, and the bolt 15 is fastened to the bolt receiving member 17 by clamping the screw portion 15a of the bolt 15 between the elastic clamping portions 21 and 23 as shown in FIGS. Then, between the head 15a of the bolt 15 and the bolt receiving member 17, the terminal of the fuse and the terminal of the wire end are pressed and clamped, and fixed together.

However, in the above-mentioned terminal fixing tool, the bolts 13 and 15 are temporarily tightened and then fully tightened with a tool. However, in order to obtain a necessary bolt pressing force, the bolts 13 and 15 must be rotated many times. It takes time to install.
Also, the bolt pressing force needs to be set and managed to a necessary torque by using a torque wrench or the like, so that mounting work is troublesome.

FIG. 17 proposes a one-touch fixture. The fixing tool includes a bolt 31 having a head 27 having a diameter larger than that of the shaft 25 at one end of the shaft 25, and a locking portion 29 having a plurality of hooks formed on both sides and provided at the other end, A bolt receiving member 39 comprising a wall portion 33 having an insertion hole 33a through which the bolt 31 is inserted, and a pair of elastic holding portions 35 and 37 formed integrally with the wall portion 33.
It is composed of

Then, as shown in FIG. 18, after the bolt 31 is inserted between the terminal 5 of the fuse and the terminal 9 of the electric wire end, the insertion hole 33a of the bolt receiving member 39 is inserted, so that the elastic holding portions 35 and 37 , The hooks on both sides are engaged with the distal ends of the elastic holding portions 35 and 37. As a result, the terminal 5 of the fuse and the terminal 9 of the wire end are fixed together.

However, in the above-described one-touch type fixing device, when the bolt 31 is removed from the bolt receiving member 39, the bolt 31 is forcibly removed from the bolt receiving member 39, so that the hook portion or the elastic locking portions 35, 37 are required. May be damaged.

Moreover, since the elastic clamping portions 35 and 37 only elastically clamp the hook portions on both sides, when used for the terminal connecting portion, the bolt 31 is loosened and the terminal 5 of the fuse and the terminal 9 of the electric wire end become loose. Poor contact may also occur.

[0010]

SUMMARY OF THE INVENTION In view of the above circumstances, according to the present invention, a terminal of a fuse and a terminal of a wire terminal can be fixed to a terminal connection portion of a fuse box with one touch, and a bolt is removed from a bolt receiving member. An object of the present invention is to provide a terminal fixing device for an electric connection box which is not damaged in a case.

[0011]

According to the first aspect of the present invention, a bolt provided with a head having a diameter larger than that of the shaft at one end of the shaft and a locking portion at the other end is inserted through the bolt. A wall portion having an insertion portion and a shaft portion of a bolt inserted through the insertion portion are elastically held, and an elastic holding portion which engages with the locking portion when the bolt is rotated to a predetermined angle is fixed to the terminal connection portion. The terminal of the fuse and the terminal of the wire end are jointly fastened and fixed between the head of the bolt and the wall by engaging the locking portion with the elastic holding portion. .

According to a second aspect of the present invention, in the first aspect of the present invention, a spiral groove provided from the tip end surface of the shaft portion to the head side and a terminal end on the head side of the groove are connected. A locking portion is formed by an annular groove provided on the outer periphery of the shaft portion, and a claw engaged with a spiral groove at an end of the elastic holding portion and locked in the annular groove by rotation of a bolt to a predetermined angle. It is characterized by having a portion.

According to a third aspect of the present invention, in the first aspect of the present invention, the locking portion protrudes from the outer periphery of the shaft portion and engages with the elastic holding portion by rotating the bolt to a predetermined angle. It is characterized by being.

According to a fourth aspect of the present invention, in the first aspect, the elastic holding portion is bent between the shaft portion of the bolt and the inner wall of the terminal connecting portion by rotation to a predetermined angle by rotation to a predetermined angle. Characterized in that an elliptical flange portion is provided for engaging with the flange.

In the invention of claim 5, claims 2, 3 and 4
The invention according to the above, wherein a cover is provided to cover the terminal connection portion,
When the bolt is rotated to a predetermined angle and the engaging portion and the elastic holding portion are engaged in the normal engagement state, they are fitted to each other to prevent the rotation of the bolt and allow the cover to be attached, and the cover is not properly engaged. An uneven portion that interferes with each other and prevents the cover from being attached is provided.

[0016]

According to the first aspect of the present invention, after inserting the shaft portion of the bolt into which the terminal of the fuse and the terminal of the electric wire terminal have been inserted into the insertion portion of the bolt receiving member fixed to the terminal connection portion, the elasticity is improved. Insert between the clamps. Then, the locking portion is engaged with the elastic holding portion by rotating the bolt by a predetermined angle. As a result, the terminal of the fuse and the terminal of the electric wire end are fixedly fastened to the terminal connecting portion. In this case, the locking portion engages with the elastic holding portion by rotating the bolt by a predetermined angle, so that the terminal of the fuse and the terminal of the electric wire end are fastened and fixed to the terminal connection portion with one touch.

In order to remove the bolt from the bolt receiving member, the bolt is rotated in the reverse direction by a predetermined angle to release the engagement between the elastic holding portion and the locking portion, and in this state, the bolt is removed from the bolt receiving member. Pull out. Thereby, the bolt is detached from the bolt receiving member without damaging the bolt and the bolt receiving member.

According to the second aspect of the present invention, the shaft portion of the bolt through which the terminal of the fuse and the terminal of the wire end are inserted,
The bolt is inserted into the bolt receiving member fixed to the terminal connection, and the tip of the bolt is inserted between the elastic holding portions. Then, when the bolt is rotated, the claw portion provided on the elastic holding portion moves in the spiral groove, and the bolt moves while rotating toward the bolt receiving member. Furthermore, when the bolt is rotated by a predetermined angle,
The claw portion of the elastic holding portion engages with the annular groove of the shaft portion. As a result, the terminal of the fuse and the terminal of the wire end are fastened and fixed to the terminal connection portion with one touch.

When the bolt is removed from the bolt receiving member, when the bolt is rotated by a predetermined angle in the reverse direction, the engagement between the claw and the annular groove is released, and the claw is formed in the spiral groove. And the bolt moves in a direction away from the bolt receiving portion while rotating. Thereby, the bolt is detached from the bolt receiving member without damaging the bolt and the bolt receiving member.

According to the third aspect of the present invention, the shaft portion of the bolt into which the terminal of the fuse and the terminal of the wire end are inserted,
The bolt is inserted into the bolt receiving member fixed to the terminal connection, and is inserted while pressing the tip of the bolt between the elastic holding portions. When the bolt is rotated by a predetermined angle, the blade on the outer periphery of the shaft engages with the elastic locking portion. As a result, the terminal of the fuse and the terminal of the electric wire end are fixedly fastened to the terminal connecting portion.
In this case, the blade is engaged with the elastic holding portion by rotating the bolt by a predetermined angle, so that the terminal of the fuse and the terminal of the electric wire are fastened and fixed to the terminal connection portion with one touch.

When the bolt is removed from the bolt receiving member, when the bolt is rotated in the opposite direction by a predetermined angle, the engaged state between the blade portion and the elastic holding portion is released. Pull out from the receiving member. Thereby, the bolt is detached from the bolt receiving member without damaging the bolt and the bolt receiving member.

According to the fourth aspect of the present invention, the shaft of the bolt into which the terminal of the fuse and the terminal of the electric wire end are inserted,
The bolt is inserted into the bolt receiving member fixed to the terminal connection, and the tip of the bolt is inserted between the elastic holding portions. Then, when the bolt is rotated by a predetermined angle, the elliptical flange portion rotates to deflect the elastic holding portion and engage with the locking portion. As a result, the terminal of the fuse and the terminal of the wire end are fastened and fixed to the terminal connection portion with one touch.

When the bolt is removed from the bolt receiving member, when the bolt is rotated in the opposite direction by a predetermined angle, the elliptical flange rotates and the elastic holding portion is released from being bent, and the elastic holding portion is released. The state of engagement between the holding portion and the locking portion is released. From this state, the bolt is pulled out of the bolt receiving member. Thereby, the bolt is detached from the bolt receiving member without damaging the bolt and the bolt receiving member.

According to the fifth aspect of the invention, when the locking portion of the bolt is not properly engaged with the elastic holding portion of the bolt receiving member, the head portion of the bolt and the uneven portion of the inner wall of the cover interfere with each other, The cover cannot be mounted. Therefore, it is possible to easily detect that the locking portion of the bolt is in an incompletely fastened state with respect to the bolt receiving member, and it is possible to immediately restore the complete state.

Further, when the locking portion of the bolt is properly engaged with the elastic holding portion of the bolt receiving member, the cover can be attached, so that it can be determined that the bolt is in the proper fastening state. In this state, the head portion of the bolt and the uneven portion of the inner wall of the cover are fitted.

Further, the fitting of the head of the bolt and the uneven portion of the inner wall of the cover prevents the bolt from rotating carelessly and prevents loosening.

[0027]

Embodiments of the present invention will be described below with reference to the drawings.

First Embodiment FIG. 1 is a perspective view of a terminal fixture in the first embodiment, and FIG. 2 is a perspective view of an electric connection box to which the terminal fixture is fixed.
In these figures, the same components as those in FIG. 14 are denoted by the same reference numerals, and description thereof will be omitted.

In the electric connection box of the present embodiment, the terminal connection portion 1
1, a terminal cover 43 is provided with a bolt 45 and a bolt receiving member 47.

As shown in FIG. 1, the bolt receiving member 47
Has a U-shaped cross section having a front wall 49 with a bolt insertion hole 49a and a pair of elastic holding portions 51, 53, and a pair of inwardly protruding diagonally rearward at the rear ends of the elastic holding portions 51, 53. Claw portions 55 and 57 are provided. Claws 55, 5
The base width of 7 is set smaller than the width of the front wall 49 side,
The rear edges of the elastic holding portions 51 and 53 are exposed as shoulder portions 59. At the tip of the claw portion 55, a semicircular notch 61a corresponding to the diameter of the bolt 45 as shown in FIG.
And a projection 63a left at the center of the semicircular cutout 61a.
There is. In this case, the semicircular notch 61a and the projection 63
“a” is symmetrical with the notch 61 b and the protrusion 63 b formed in the claw portion 57 on the other side. The space between the opposed notches 61a and 61b is set smaller than the diameter of the shaft 45a of the bolt 45 in the free state.

The bolt receiving member 47 is inserted into a receiving hole 65 formed in the terminal connecting portion 11, as shown in FIGS. The accommodation hole 65 is formed between the front wall 49 and the elastic holding portion 5.
The front room 67 having a rectangular parallelepiped shape for accommodating 1, 53, and the narrow rear room 6 for accommodating the claw portions 55, 57 at the back thereof.
9 At the boundary between the front room 67 and the rear room 69, the rear wall 69 has a narrower width, so that the contact wall 71 is formed, and in a state where the bolt receiving member 47 is accommodated, The shoulder 59 is positioned against the contact wall 71.

The depth B of the rear room 69
Is formed slightly larger than the protrusion A of the claws 55 and 57 to the rear as shown in FIG. When the bolt receiving member 47 is housed in the housing hole 65, the position of the insertion hole 49 a exactly matches the position of the bolt through hole 5 a of the terminal 5 of the fuse to be inserted from above. .

On the other hand, the bolt 45 has a pair of very large spiral grooves 73 formed from the tip of the lead in the range of about 90 degrees in the rotation angle on the outer periphery of the shaft 45a.
As shown in (a), (b), and (c), the end point of the spiral groove 73 is located in an annular groove 75 formed at a position spaced from the tip of the shaft 45a of the bolt 45 by a predetermined dimension. In addition, the depth of the spiral groove 73 is larger than the depth of the annular groove 75. The spiral groove 73 and the annular groove 75 constitute a locking portion.

The head 44 of the bolt 45 is provided with a rectangular projection 77 as shown in FIG. After the bolt 45 is inserted into the bolt receiving member 47,
When rotated by an angle, a normal fastening state is established, and in this state, the posture of the rectangular projection 77 is oriented vertically.

On the other hand, as shown in FIG.
Reference numeral 1 denotes a size that closes an opening on the side surface of the box body 1 and is configured to be attachable from the side. At the position corresponding to the bolt 45 on the inner wall of the side cover 41, two ribs 79, 81 are provided in parallel to protrude.
1, a concave portion 83 is provided in which the convex portion 77 in the vertical position is fitted. Also, the side cover 41
A lock frame 87 that fits into the lock projection 85 on the box body 1 side is formed on the side of the box body 1.

Next, in order to fix the terminal 5 of the fuse 3 and the terminal 9 of the wire terminal together to the terminal connection portion 11, the fuse 3 is inserted into the box body 1, and the terminal 5 of the fuse 3 and the terminal of the wire terminal are connected. The terminal 9 is superimposed on the front wall 49 of the bolt receiving member 47. Then, the bolt 45 is inserted into the insertion hole 49a, and the tip end thereof is brought into contact with the pair of claw portions 55 and 57. In this state, when the bolt 45 is pressed toward the bolt receiving member 47 while being rotated by about 90 degrees, the protrusions 63a and 63b move in the spiral groove 73 as shown in FIG.
As shown in FIG. In this state, the pair of claws 55 and 57 are engaged with the annular groove 75, and the elastic holding portions 51 and 53 are bent, and the inner width of the accommodation hole 65 is widened.
Thereby, the terminal 5 of the fuse 3 and the terminal 9 of the electric wire end can be fixedly fastened to the terminal connection portion 11 together.

After fastening together, the side cover 41
Attach. At this time, if the bolt 45 is not fully tightened, the rectangular convex portion 77 is not correctly oriented in the up-down direction. The portion 77 interferes and prevents the side cover 41 from being mounted.

When the bolt 45 is sufficiently tightened and the rectangular projection 77 is oriented vertically, the rectangular projection 77 fits into the recess 83 of the side cover 41. Therefore, interference between the convex portion 77 and the ribs 79 and 81 is avoided, and the side cover 41 can be mounted in an appropriate manner. In addition, the rectangular projection 77 sandwiched between the ribs 79 and 81 is restrained in the rotation direction, thereby preventing the bolt 45 from loosening.

When removing the bolt 45 from the bolt receiving member 47, the bolt 45 is rotated about 90 degrees in the opposite direction after removing the side cover 41 from the box body 1. When the bolt 45 is rotated by about 90 degrees in the opposite direction, the pair of claws 55 and 57 are disengaged from the annular groove 75 and move in the spiral groove 73, whereby the bolt 45 is pulled out of the bolt receiving member 47. Then, by extracting the bolt 45 from the insertion hole 49a, the bolt 45 can be easily removed from the terminal connection portion 11.

As described above, according to the embodiment, the fuse 3
Terminal 5 of the electric wire terminal and the terminal 9 of the electric wire terminal can be fixed to the terminal connection portion 11 of the electric connection box with one touch.
When it is removed from the bolt receiving member 47, it is not damaged.

Further, by fitting the convex portion 77 of the head of the bolt 45 into the concave portion 83 of the side cover 41, the bolt 4
5 can be prevented and bolt 45 can be prevented from loosening.

Next, a modification of the first embodiment will be described. In this modification, a bolt receiving member 89 shown in FIG. 7 is used instead of the bolt receiving member 47 of the above embodiment. The bolt receiving member 89 similarly includes a front wall 49, elastic holding portions 51 and 53, claw portions 55 and 57, and a shoulder portion 59,
The claw portions 55 and 57 have semicircular notches 91a and 91b at the tips thereof, and the protrusions 93a and 9b are provided at the centers of the notches 91a and 91b.
3b. In addition, opposed notches 91a, 91b
The same applies to the point that the space between them is set smaller than the diameter of the shaft portion 45a of the bolt 45. The difference from the above-described bolt receiving member 47 is that, in the bolt receiving member 89 of the modified example, the centers of the semicircular notches 91 a and 91 b are eccentric, and the bolt receiving members 89 are relatively shifted in the direction along the tip edges of the claw portions 55 and 57. It is out of alignment.

When the bolt 45 is inserted into the bolt receiving member 89, the projection 93 a is formed along the spiral groove 73 of the bolt 45.
As shown in FIG. 8, the claw portions 55 and 57 are pushed and expanded in the direction of the arrow X and simultaneously moved in the direction of the arrow Y, so that the shaft portion 45a of the bolt 45 becomes a semicircular cutout 91a. , 91b. At this time, the positions of the notched portions 91a and 91b that were eccentric
a, the shaft 45a of the bolt 45 and the claw 5 are fixed as shown in FIG.
7, a combined force (toward the center of the bolt 45) 95c of a reaction force 95a when the claw portion 57 is pushed and expanded and a reaction force 95b when the eccentricity is corrected is applied. The direction of the resultant force is an oblique direction, and since the claw portion 57 is hardly bent, it is hard to come off. In addition, since the magnitude of the resultant force 95c is larger than the force in the direction of simply pushing and expanding, it is difficult to come off from this point.

In the above embodiment, the case where the side cover 41 is separate from the box body 1 is shown, but the side cover 41 may be opened and closed by a hinge. Further, the convex portion 77 of the bolt 45 and the concave portion 83 on the side cover 41 side may be provided in reverse.

Second Embodiment Next, a second embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 10, the terminal fixture 97 of the present embodiment includes a bolt 99 and a bolt receiving member 101.

The bolt receiving member 101 has a bolt insertion hole 1
A front wall 103 with 03a, a pair of elastic holding portions 105,
The elastic holding portion 105 has a U-shaped cross section having 107,
A pair of inward claws 109 and 111 projecting obliquely rearward are provided at the rear end of 107. In this case, the width of the claw portions 109 and 111 is set to the same size as the front wall 103, and the gap between the claw portions 109 and 111 is set smaller than the diameter of the shaft portion 45a of the bolt 45. Rectangular notches 113a and 113b are formed on the inner wall of the bolt insertion hole 103a at positions facing each other. The bolt receiving member 101 is inserted into a receiving hole formed in a terminal connection portion of the electric connection box, similarly to the bolt receiving members 47 and 89 of the first embodiment described above. When a fuse is inserted into the terminal connection portion in this state, the bolt insertion hole 103a
Is exactly matched with the position of the bolt hole 5a of the terminal 5 of the fuse to be inserted from above.

On the other hand, the bolt 99 has a head portion 115 formed on one side of the shaft portion 99a, and an insertion portion 117 gradually reduced in diameter toward the tip end on the other side. Between the head 115 and the insertion portion 117, a pair of blades 119 and 121 project from the outer periphery of the shaft 99a. These wings 1
19 and 121 are formed long along the axial direction of the shaft portion 99a. Also, on the head 115 side, a slope 123 that is inclined upward from the outer periphery of the shaft portion 99a toward the insertion portion 117,
123 are formed respectively. And the slope 12
The distance L1 (length excluding the thickness of the terminals 5 and 9 of the fuse) excluding the thicknesses of the terminals 5 and 9 of the fuse is longer than the distance L2 from the front wall 103 of the bolt receiving member 101 to the claws 109 and 111. Is set. Further, a recess 125 is formed in the head 115 along the blades 119 and 121.

Next, in order to fix and fix the terminal 5 of the fuse 3 and the terminal 9 of the electric wire terminal together, the bolt receiving member 101 is connected to the terminal connection portion of the electric connection box 3 to which the fuse 3 is fixed in advance.
Terminal 5 and the terminal 9 of the wire end are inserted and overlapped on the front wall 103 of the bolt receiving member 101. Then, the bolt 99 is inserted into the bolt insertion hole 103a, and further, the bolt 99 is inserted into the bolt receiving member 101, and FIG.
As shown in FIG. Next, when the bolt 99 is rotated approximately 90 degrees, the pair of claw portions 1
The tip portions of 09 and 111 slide on the slopes 123 and 123 to bend toward the front wall 103, and as shown in FIG.
The claw portions 109 and 111 of the elastic holding portions 105 and 107 are engaged with the outer periphery of the shaft portion 99a of the bolt 99 and the blade portions 119 and 122. As a result, the terminal 5 of the fuse 3 and the terminal 9 of the wire end can be fastened and fixed to the terminal connection portion with one touch.

After the terminal 5 of the fuse and the terminal 9 of the wire end are fastened together, a side cover is attached to the terminal connecting portion. At this time, if the bolts 99 are not completely tightened, the protrusions provided on the side cover cannot completely fit into the recesses 125 on the head of the bolt 99 and interfere with each other. Block. Also, bolt 99
Is sufficiently fastened, the convex portion of the side cover is completely fitted into the concave portion 125 of the head 115 of the bolt 99, and the side cover can be attached to the terminal connection portion. Further, in this state, the bolt 99 is restrained in the rotation direction, and the loosening of the bolt 99 is prevented.

Further, the bolt 99 is connected to the bolt receiving member 101.
To remove the bolt from the box body, the bolt 99 is rotated about 90 degrees in the opposite direction after removing the side cover from the box body.
When the bolt 99 is rotated about 90 degrees in the opposite direction, the blade 11
The elastic holding portions 107 and 109 return to their original shapes, and the engaged state is released. Next, the bolt 99 is connected to the bolt receiving member 101.
The bolt 99 is pulled out from the bolt receiving member 10.
1 can be easily removed. Therefore, the bolt 99 and the bolt receiving member 101 are not damaged.

Third Embodiment Next, a third embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 12, the terminal fixture 127 of the present embodiment includes a bolt 129 and a bolt receiving member 131.
It is composed of

The bolt receiving member 131 is provided with the bolt insertion hole 1.
A front wall 133 with 33a, a pair of elastic holding portions 135,
137, and has an elastic holding portion 135,
At the rear end of the 137, a pair of inward claws 139 and 141 projecting obliquely rearward are provided. The bolt receiving member 131 is housed in a housing hole 143 provided in a terminal connection part of the electric connection box. In the receiving hole 143, projections 147 and 147 are provided at an intermediate portion between the opposed inner walls 145 and 145.
Is protruding.

On the other hand, the bolt 129 is provided with an elliptical flange portion 149 at an intermediate portion of the shaft portion 129a, a head portion 151 is formed on one side of the flange portion 149, and a locking groove 153 is formed on the other side. Have been. Also, the head 151
Has a concave portion 155 along the longitudinal direction of the flange portion 149.
Are formed. The flange portion 149 has a width L3 in the short axis direction of the ellipse shorter than the length L4 between the elastic holding portions 135 and 137, and a width dimension L5 in the long axis direction of the elastic holding portion 13.
It is set longer than the dimension L4 between 5,137. Therefore, the bolt 129 is moved from the insertion hole 133 to the elastic holding portion 13.
5 and 137 and rotated by approximately 90 degrees, the outer peripheral portion in the long axis direction of the flange portion 149 becomes the elastic holding portion 135,
The inner wall of the elastic member 137 is pressed to expand the space between the elastic holding portions 135 and 137.

Next, in order to fix and fix the terminal 5 of the fuse 3 and the terminal 9 of the wire end together, the terminal 5 of the fuse 3 and the wire 5 are connected to the terminal connection portion of the electric connection box to which the bolt receiving member 131 is fixed in advance. The terminal 9 of the terminal is inserted and overlapped with the front wall 133 of the bolt receiving member 131. And bolt 1
13A is inserted into the bolt insertion hole 133a, and the bolt 129 is further inserted into the bolt receiving member 131.
As shown in (5), the locking groove 153 is located between the claws 139 and 141. When the bolt 129 is rotated by approximately 90 degrees from this state, as shown in FIG.
The outer periphery in the long axis direction of 9 touches the inner walls of the elastic holding portions 135 and 137, and pushes the elastic holding portions 135 and 137 apart.

The elastic holding portions 135 and 137 are
9 and 141 are brought into contact with the projections 147 and 147 of the housing hole 143 and deformed, and the claws 139 and 141 are bent toward the front wall 133. When the claws 139 and 141 bend toward the front wall 133,
The distal end portion engages with the locking groove 153. As a result, the terminal 5 of the fuse 3 and the terminal 9 of the electric wire end can be fastened and fixed to the terminal connection portion with one touch.

After the terminal 5 of the fuse and the terminal 9 of the wire end are fastened together, a side cover is attached to the terminal connecting portion. At this time, if the bolt 129 is not fully tightened, the protrusion provided on the side cover cannot completely fit into the recess 155 of the head 151 of the bolt 129 and interferes. Block. When the bolt 129 is sufficiently tightened, the convex portion of the side cover is
5, and the side cover can be attached to the terminal connection portion. In this state, the bolt 129 is restrained in the rotation direction, and the bolt 129 is prevented from loosening.

Next, the bolt 129 is connected to the bolt receiving member 13.
When removing from side 1, after removing a side cover from a box main body, the bolt 129 is rotated about 90 degrees in reverse direction. When the bolt 129 is rotated about 90 degrees in the reverse direction, the elliptical flange 149 also rotates about 90 degrees, so that the elastic holding parts 135 and 137 return to the original shape, and the claw 13
The engagement state of the engagement grooves 9 and 141 with the engagement groove 153 is released.
In this state, the bolt 129 can be easily removed from the terminal connection portion by extracting the bolt 129 from the bolt receiving member 131. Therefore, the bolt 129 and the bolt receiving member 131 are not damaged.

[0058]

As described above, according to the first aspect of the present invention, when the bolt is rotated by a predetermined angle, the engaging portion engages with the elastic holding portion, so that the terminal of the fuse and the wire terminal can be connected with one touch. Can be fixed together with the terminal fixing portion. Also, when removing the bolt from the bolt receiving member, by rotating the bolt in the opposite direction by a predetermined angle,
It can be easily removed without damage.

According to the second aspect of the present invention, when the bolt is inserted into the bolt receiving member and rotated by a predetermined angle, the claw portion of the elastic holding portion moves in the spiral groove and engages with the annular groove. The terminal of the fuse and the terminal of the wire end can be fastened together with one touch. When the bolt is removed from the bolt receiving member, the bolt and the bolt receiving member can be easily removed without being damaged by rotating the bolt by a predetermined angle in the reverse direction.

According to the third aspect of the present invention, when the bolt is inserted into the bolt receiving member and rotated by a predetermined angle, the blade engages with the elastic holding portion. Thereby, the terminal of the fuse and the terminal of the wire end can be fixedly fastened together to the terminal connection portion. When removing the bolt from the bolt receiving member,
By rotating the bolt in the opposite direction by a predetermined angle, the bolt and the bolt receiving member can be easily removed without damage.

According to the fourth aspect of the present invention, when the bolt is inserted into the bolt receiving member and rotated by a predetermined angle, the elliptical flange portion bends the elastic holding portion, and the elastic holding portion is engaged with the locking portion. Combine. Thus, the terminal of the fuse and the terminal of the electric wire end can be fastened and fixed to the terminal connection portion with one touch. When the bolt is removed from the bolt receiving member, the bolt and the bolt receiving member can be easily removed without being damaged by rotating the bolt in the opposite direction by a predetermined angle.

According to the fifth aspect of the present invention, whether or not the bolt has been completely tightened can be easily known based on whether or not the cover can be mounted. Further, when the bolt is completely tightened, the inner wall of the cover and the uneven portion of the head of the bolt are fitted to prevent rotation of the bolt, so that loosening of the bolt can be reliably prevented.

[Brief description of the drawings]

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

FIG. 2 is a perspective view showing a state before assembling the terminal fixture of the first embodiment of the present invention to an electric connection box.

FIGS. 3A and 3B are enlarged views of a bolt receiving member according to the first embodiment of the present invention, wherein FIG. 3A is a side view and FIG. 3B is a front view.

4 (a) is a side view, and FIG. 4 (b) is a view showing IVb- of FIG. 4 (a).
FIG. 4C is a sectional view taken along the line IVc-IVc in FIG.

FIG. 5 is a plan sectional view showing the relationship between the bolt, the bolt receiving member, and the cover in a state where the bolt according to the first embodiment of the present invention is not completely tightened.

FIG. 6 is a plan sectional view showing the relationship between the bolt, the bolt receiving member, and the cover in a state where the bolt according to the first embodiment of the present invention is completely tightened.

FIG. 7 is a front view of a bolt receiving member in a modified example of the terminal fixture of the first embodiment of the present invention.

FIG. 8 is a front view of a modified example of the terminal fixture according to the first embodiment of the present invention, in which a bolt is screwed into a bolt receiving member.

FIG. 9 is an enlarged view of a main part of FIG. 8;

FIG. 10 is a perspective view showing a terminal fixture according to a second embodiment of the present invention.

11A and 11B show a relationship between a bolt and a bolt receiving member according to a second embodiment of the present invention, wherein FIG. 11A is a cross-sectional view showing a state before the bolt is rotated by a predetermined angle, and FIG. It is sectional drawing which shows the state which fixed the terminal of the fuse and the terminal of the electric wire terminal together.

FIG. 12 is a perspective view showing a terminal fixture according to a third embodiment of the present invention.

13A and 13B show a relationship between a bolt and a bolt receiving member according to a third embodiment of the present invention, wherein FIG. 13A is a sectional view showing a state before the bolt is rotated by a predetermined angle, and FIG. It is sectional drawing which shows the state which fixed the terminal of the fuse and the electric wire terminal together.

FIG. 14 is a perspective view showing an example of a conventional electric connection box.

FIG. 15 is a perspective view showing a terminal fixture used in a conventional electric junction box.

16A and 16B show a relationship between a bolt and a bolt receiving member of the conventional terminal fixture shown in FIG. 15, wherein FIG. 16A is a cross-sectional view showing a state where the bolt is inserted into the bolt receiving member, and FIG. It is sectional drawing which shows the state which clamped part was engaged.

FIG. 17 is a perspective view showing a conventional one-touch type terminal fixture.

18 is a cross-sectional view showing a relationship between a bolt and a bolt receiving member of the conventional terminal fixing device shown in FIG. 17 and showing a state where an elastic holding portion is engaged with the bolt.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Box main body 3 Fuse 5 Terminal 7 Electric wire 9 Terminal 11 Terminal connection part 41 Side cover 43, 97, 127 Terminal fixture 45, 99, 129 Bolt 45a, 99a shaft part 47, 89, 101, 131 Bolt receiving member 49, 103 , 133 Front wall 51, 53, 105, 107, 135, 137 Elastic holding portion 55, 57, 109, 111, 139, 141 Claw portion 73 Spiral groove 75 Annular groove 77 Convex portion 83, 125, 155 Concave portion 119, 121 Blade Part 149 Flange part 153 Lock groove

Claims (5)

(57) [Claims] 1. A terminal fixing device for an electric connection box for fixing a terminal of an electric wire terminal or the like to a terminal connecting portion of a box body together, wherein a head having a diameter larger than that of the shaft is provided at one end of the shaft, and A bolt provided with a locking portion, a wall portion having an insertion portion through which the bolt is inserted, and the shaft portion of the bolt inserted through the insertion portion are elastically pinched, and when the bolt is rotated to a predetermined angle, A bolt receiving member fixed to the terminal connecting portion with an elastic holding portion engaged with the locking portion, and the terminal and the like of the wire terminal are formed by engaging the locking portion with the elastic holding portion. A terminal fixing device for an electric connection box, wherein the terminal fixing device is fixedly fastened between a head portion of a bolt and the wall portion. 2. The helical groove according to claim 1, wherein the helical groove is provided from a front end surface of the shaft portion to a head side.
The locking portion is formed by an annular groove provided on the outer periphery of the shaft portion continuously with the terminal end on the head side of the groove, and the helical groove is fitted to the end of the elastic holding portion with the spiral groove. A terminal fixing tool for an electric junction box, comprising a claw portion which is locked in the annular groove by rotation to a predetermined angle. 3. The blade according to claim 1, wherein the locking portion protrudes from an outer periphery of the shaft portion and is engaged with the elastic holding portion by rotation of the bolt up to a predetermined angle. A terminal fixing device for an electric connection box, wherein the terminal fixing device is provided. 4. The invention according to claim 1, wherein the elastic holding portion is bent between the shaft portion of the bolt and an inner wall of the terminal connecting portion by rotation to a predetermined angle by rotation to a predetermined angle. A terminal fixing tool for an electric connection box, wherein an elliptical flange portion to be engaged is provided. 5. The invention according to claim 2, wherein a cover is provided to cover said terminal connection portion, and said locking portion and said elastic holding portion are engaged by rotating said bolt to a predetermined angle. The concave and convex portions are provided to prevent the rotation of the bolts and to allow the cover to be fitted together when the members are in the regular engagement state, and to interfere with each other to prevent the cover from being fitted when the members are not in the regular engagement state. A terminal fixture for an electrical junction box, characterized by the following.