JP7203820B2 - Relay mounting part and electrical connection box - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a relay attachment portion provided in an electrical junction box mounted in a vehicle such as an automobile, and an electrical junction box provided with the relay attachment portion.

As a relay attached to an electric connection box installed between a battery and other electronic equipment mounted in a vehicle such as an automobile, for example, a plate-shaped projecting downward from the bottom surface of the relay body containing the electric circuit are arranged side by side, three in a first direction and two in a second direction orthogonal to the first direction.

On the other hand, as disclosed in Patent Document 1, for example, the electrical connection box is arranged on a circuit board provided with an electric circuit so that the terminal gripping portion for gripping the relay terminal corresponds to the relay terminal (i.e., three terminal grips arranged side by side in the first direction and two in the second direction; The circuit can be electrically connected to an electrical circuit provided in the relay mounting portion.

However, in the relay mounting portion disclosed in Patent Literature 1, due to vibration of a vehicle in which an electric connection box provided with the relay mounting portion is mounted, the relay terminal and the terminal grip portion arranged on one end side in the first direction, for example, As a result, the contact between the relay terminal located on the other end and the terminal gripping part may loosen due to the pivoting movement, resulting in poor contact. was there.

JP-A-2002-112434

SUMMARY OF THE INVENTION In view of the above-described problems, the present invention provides a relay mounting portion capable of improving the gripping force of a terminal gripping portion that grips a relay terminal and suppressing poor contact of the relay terminal due to vibrations of a vehicle, and the relay mounting portion. An object of the present invention is to provide an electrical connection box that

The present invention provides a relay mounting portion to which a relay is assembled and electrically connected, the relay comprising a relay body and a plurality of plate-shaped relay terminals protruding from the relay body. The terminal gripping portion includes a pair of clamping pieces that are connected on the base end side and are provided so that the tip side is open, and the clamping piece that faces the clamping piece on the tip side of the clamping piece. and a contact portion that abuts on the relay terminal. and a second gripping portion group in which a plurality of the terminal gripping portions are arranged along the second direction and at predetermined intervals in the first direction. and the terminal gripping portion arranged in the center portion in the second direction of the first gripping portion group, and the second direction in the first gripping portion group of the second gripping portion group At least one of the terminal gripping portions arranged in the central portion of the terminal gripping portion is composed of a strong gripping portion having a stronger gripping force than the other terminal gripping portions.
According to another aspect of the present invention, there is provided an electric connection box including the above-described relay mounting portion.

Along with the direction along the above-mentioned first direction and along with the direction along with the second direction, the main surface of the terminal gripping portion constituting the first gripping portion group and the second gripping portion It refers to a state in which the main surfaces of the terminal gripping portions forming the group face the first direction and the second direction, respectively.

The phrase “the plurality of terminal gripping portions are arranged at predetermined intervals in the second direction” means that the main surfaces of the terminal gripping portions constituting the first gripping portion group are aligned along the second direction. A configuration in which the terminal gripping portions are arranged so as to line up on a line, and a configuration in which the respective terminal gripping portions are arranged so as to be shifted in the first direction so as not to be aligned on a straight line are included.

Similarly, the fact that the plurality of terminal gripping portions are arranged at predetermined intervals in the first direction described above means that the main surfaces of the terminal gripping portions constituting the second gripping portion group are arranged in the first direction. It includes a configuration in which the terminal gripping portions are arranged so as to be aligned along a straight line, and a configuration in which the respective terminal gripping portions are arranged so as to be shifted in the second direction so as not to be aligned on a straight line.

According to the present invention, it is possible to improve the gripping force for gripping the relay terminal and to suppress poor contact of the relay terminal due to vehicle vibration or the like.
More specifically, the terminal gripping portion arranged at the center portion in the second direction of the first gripping portion group, and the terminal gripping portion of the second gripping portion group in the second direction Since the strong gripping portion is arranged in at least one of the terminal gripping portions arranged in the central portion, that is, the strong gripping portion is arranged in the central portion of the relay mounting portion, the relay mounting portion It is possible to improve the gripping force for gripping the relay terminal as a whole.

In addition, the strong gripping portion firmly grips the relay terminal arranged in the central portion of the relay, so that even if a vehicle or the like on which the relay mounting portion is mounted vibrates, pivotal movement due to vibration is prevented. Since the pivot shaft can be a contact portion with the strong gripping portion, the strong gripping portion can suppress pivotal movement due to vibration.

In addition, compared to the case where the relay terminal gripped by the terminal gripping portion disposed outside serves as the pivot shaft, the relay terminal gripped by the strong grip portion and serving as the pivot shaft and the other relay terminal gripped by the terminal grip portion serve as the pivot shaft. Since the distance to the relay terminal gripped by the terminal gripping portion is shortened, the pivoting distance of the relay terminal gripped by the other terminal gripping portion to pivot due to the vibration of the vehicle can be shortened. . Therefore, the relay can be stably held by the relay mounting portion, and poor contact between the relay terminal and the terminal holding portion due to vibration can be suppressed.

As an aspect of the present invention, the length of the holding piece in the strong gripping portion along the insertion direction of the relay terminal is longer than the length of the holding piece in the other terminal holding portion along the insertion direction of the relay terminal. It may be configured to be short.
The holding piece of the strong gripping portion described above is configured to be shorter than the holding piece of the other terminal gripping portion means that the tip position of the contact portion of the strong gripping portion is brought into contact with the other terminal gripping portion. or a configuration in which the tip position of the contact portion of the strong grip portion is the same as the contact portion of the other terminal grip portion, and the contact portion of the strong grip portion is lengthened. include.

According to the present invention, since the bending of the pinching pieces of the strong gripping portion can be reduced, the gripping force of the strong gripping portion can be made stronger than that of the other terminal gripping portions, and the gripping force for gripping the relay terminal can be increased. can be improved. Thereby, the relay can be stably held by the relay mounting portion.

Further, if the tip position of the contact portion of the strong gripping portion is made lower than the tip position of the contacting portion of the other terminal gripping portion by shortening the clamping piece of the strong gripping portion. Since the timing at which the relay terminal abuts against the other terminal gripping portion and the timing at which the relay terminal abuts against the strong gripping portion can be deviated, the relay can be held in the above manner while improving the overall holding force. The insertion force required to attach to the relay mount can be reduced.

Further, as an aspect of the present invention, the contact portion of the strong grip portion may be configured to be longer along the insertion direction of the relay terminal than the corresponding contact portion of the other terminal grip portion.
According to the present invention, it is possible to improve the electrical conductivity between the relay terminal and the strong gripping portion, which improves the gripping force of the strong gripping portion.

In addition, since the contact area between the contact portion and the relay terminal can be increased, it is possible to suppress the contact portion between the strong grip portion and the relay terminal from functioning as a pivot shaft. Even if it pivots due to vibration, the contact portion can suppress the pivoting of the relay terminal. Therefore, it is possible to more reliably suppress poor contact of the relay terminal that is gripped by the other terminal gripping portion.

Further, as an aspect of the present invention, the contact portion of the strong grip portion is provided on the distal end side or the proximal end side along the insertion direction of the relay terminal from the position of the contact portion of the other terminal grip portion. may
According to the present invention, the timing at which the strong grip portion abuts on the relay terminal and the timing at which the other terminal gripping portion abuts on the relay terminal can be shifted. At the same time, the insertion force required to attach the relay to the relay attachment portion can be reduced.

In particular, the contact portion of the strong grip portion is provided closer to the base end side along the insertion direction of the relay terminal than the position of the contact portion of the other terminal grip portion. Since the piece can be shortened, the deflection can be reduced, and the gripping force can be improved with a simple structure while reducing the load on the gripping portion.

Further, as an aspect of the present invention, a tapered surface that is inclined toward the opposing contact portion is provided on the base end side of the contact portion in the insertion direction of the relay terminal, and the tapered surface of the strong grip portion is: It may be configured with a gentler slope than the tapered surface of the other terminal gripping portion.
According to the present invention, since the relay terminal can be guided to the terminal holding portion, the relay can be mounted more reliably.

Further, since the tapered surface of the contact portion of the strong gripping portion is formed with a gentler slope than the tapered surface of the contacting portion of the other terminal gripping portion, The contact area of the abutting portion can be increased, and the gripping force of the strong gripping portion can be improved.

Further, as an aspect of the present invention, the strong gripping portion is provided on the side of the first gripping portion group or the second gripping portion group where the number of the terminal gripping portions arranged at predetermined intervals is small. may
According to the present invention, it is possible to prevent the gripping force in the first direction or the second direction, in which the number of the terminal gripping portions is small, from decreasing, so that the relay mounting portion as a whole can have a stable gripping force.

According to the present invention, there are provided a relay mounting portion capable of improving the gripping force of a gripping portion that grips a relay terminal and suppressing poor contact of the relay terminal due to vehicle vibration, etc., and an electrical connection box provided with the relay mounting portion. can be done.

FIG. 2 is a schematic exploded perspective view of an electrical connection box; FIG. 4 is a schematic exploded perspective view of a relay and a relay mounting portion; Explanatory drawing of a relay attachment part. The front view of a 1st tuning-fork terminal and a 2nd tuning-fork terminal. Rear view of the relay. Explanatory drawing of the attachment process of a relay and a relay attachment part. Explanatory drawing of the second tuning fork terminal in another embodiment.

The electrical junction box 1 and the relay mounting portion 20 attached to the electrical junction box 1 will be described below with reference to FIGS. 1 to 6. FIG.
FIG. 1 shows a schematic exploded perspective view of an electrical junction box 1. FIG. In FIG. 1, the front corner portion of the lower cover 11 constituting the electric connection box 1 is indicated by a dashed line, and the dashed line portion represents a see-through state for clarifying the internal structure.

1, the longitudinal direction of the electrical junction box 1 is defined as a first direction F, the lateral direction of the electrical junction box 1 is defined as a second direction S, and the vertical direction in FIG. Moreover, this height direction H is orthogonal to both the first direction F and the second direction S, which are orthogonal to each other.
In FIG. 1, the left side of the first direction F is the +F side, the right side is the -F side, the right side of the second direction S is the +S side, and the left side is the -S side. 5, FIG. 6, and FIG. 7 are the same.

FIG. 2 shows a schematic perspective view of a relay mounting portion 20 provided in the electrical junction box 1 and a relay 30 mounted on the relay mounting portion 20, FIG. 3 shows an explanatory diagram of the relay mounting portion 20, and FIG. A front view of the tuning fork terminal 40 assembled to the portion 20 is shown, and FIG. 5 shows a bottom view of the relay 30. FIG.

3 and 4, FIG. 3(a) shows a front view of the relay mounting portion 20 viewed from the +F side in the first direction F, and FIG. 3(b) shows the relay mounting portion 20 viewed from above. shows a plan view. FIG. 4(a) shows a front view showing the main surface side of the first tuning fork terminal 40a, and FIG. 4(b) shows a front view showing the main surface side of the second tuning fork terminal 40b.

The electric junction box 1 mounted on the vehicle is arranged between a power supply (not shown) such as a battery and external devices (not shown) provided outside the electric junction box 1 to connect the battery and the external devices. electrically connected. As shown in FIG. 1, the electrical junction box 1 includes an electrical junction box body 10 which is a rectangular housing, a relay mounting portion 20 provided inside the electrical junction box body 10, and a It is composed of a relay 30 attached to it.

The electric connection box main body 10 is composed of a bottomed square tubular lower cover 11 having a housing space for housing the relay mounting portion 20 and the like inside, and an upper cover 12 covering the upper side of the lower cover 11 .

As shown in FIG. 2, the relay mounting portion 20 attached to the lower cover 11 is composed of a circuit board 21 having an electronic circuit on the back side and five tuning fork terminals 40 standing on the front side of the circuit board 21. ing.

In this embodiment, the circuit board 21 is one circuit board on which the five tuning fork terminals 40 are arranged upright. A circuit board may be used.

Three of the five tuning fork terminals 40 are arranged along the second direction S with their main surfaces facing the first direction F, as shown in FIGS. 2 and 3 . The three tuning fork terminals 40 constitute the first gripping portion group 22 . The three tuning fork terminals 40 forming the first gripping portion group 22 are composed of first tuning fork terminals 40a of the same type.

On the other hand, the remaining two tuning fork terminals 40 have main surfaces facing the second direction S and are arranged along the first direction F to constitute the second grip portion group 23 . The tuning fork terminal 40 constituting the second grip portion group 23 is composed of a first tuning fork terminal 40a and a second tuning fork terminal 40b. This second tuning fork terminal 40b is arranged on the -F side in the first direction F so as to face the first tuning fork terminal 40a in the middle that constitutes the first gripping portion group 22, and the center in the second direction S It is arranged on the +S side in the second direction S from the first tuning fork terminal 40a that constitutes the second grip portion group 23 that is arranged in the part.

The basic configuration of the tuning fork terminal 40 will be described below with reference to FIG.
The tuning fork terminal 40 is a metal tuning fork terminal having conductivity, and includes a flat base end portion 41, clamping pieces 42, 42 erected above the base end portion 41, and tips of the clamping pieces 42, 42. contact portions 43, 43 protruding toward the clamping pieces 42, 42 facing each other from the base end portion 41, and lead portions 44, 44 protruding downward from the bottom surface of the base end portion 41. As shown in FIG.

The base end portion 41 is composed of a metal flat plate having a predetermined plate thickness, and the center portion of the upper surface side in the width direction has an inner edge directed downward so as to be line symmetrical with respect to the width direction. A curved concave portion 45 is formed in a substantially V shape by denting it.

The clamping pieces 42 , 42 are metal pieces having the same plate thickness as the base end portion 41 , and stand upward from both width direction end portions of the base end portion 41 such that the inner edges thereof are continuous with the curved recessed portion 45 . . That is, the clamping pieces 42, 42 are connected to the proximal end portion 41 at their proximal ends, and are provided so as to open at their distal ends. The connecting portion between the inner edges of the clamping pieces 42 and the curved concave portion 45 is curved so as to be connected smoothly.

The contact portions 43, 43 are projecting portions that protrude upward and toward the center in the width direction from the upper ends of the clamping pieces 42, 42. is configured to be slightly narrower. A tapered surface 46 that slopes downward toward the center in the width direction is formed at the upper end portions of the contact portions 43 , 43 on the center side in the width direction.

The lead portions 44, 44 are metal legs having the same plate thickness as the base end portion 41 and protruding downward from the bottom surface of the base end portion 41, and are arranged at predetermined intervals in the width direction. In addition, an insertion tapered surface 47 is formed at the outer lower end portion of each lead portion 44 in the width direction.

The lead portions 44 , 44 are inserted through through holes (not shown) provided in the circuit board 21 and joined to the circuit board 21 by soldering or the like, thereby connecting the electric circuit and the electric circuit formed on the back surface of the circuit board 21 . can be directly connected.

The tuning fork terminal 40 configured in this way includes a first tuning fork terminal 40a and a second tuning fork terminal 40b which has the same basic configuration as the first tuning fork terminal 40a but has a different detailed configuration.
As shown in FIG. 4A, the first tuning fork terminal 40a includes a base end portion 41 made of a flat plate, a pair of clamping pieces 42a and 42a having the same configuration as the clamping pieces 42, 42, and a contact portion. A pair of contact portions 43a, 43a having the same structure as 43, 43 and a pair of lead portions 44, 44 are integrally formed. A tapered surface 46a is provided on the contact portions 43a, 43a.

On the other hand, the second tuning fork terminal 40b has the same basic configuration as the tuning fork terminal 40 (first tuning fork terminal 40a), but as shown in FIGS. different.

More specifically, the second tuning fork terminal 40b includes a base end portion 41, a pair of clamping pieces 42b, 42b projecting upward from both ends in the width direction of the base end portion 41, and clamping pieces 42b, 42b facing each other from the upper ends of the clamping pieces 42b, 42b. A pair of contact portions 43b, 43b projecting toward the pieces 42b, 42b and lead portions 44, 44 are integrally formed.

The clamping pieces 42 b , 42 b are metal pieces having the same plate thickness as the base end 41 , and stand upward from both ends in the width direction of the base end 41 so as to be continuous with the curved recess 45 . The clamping pieces 42b, 42b are configured to be shorter in the height direction H than the clamping pieces 42a, 42a of the first tuning fork terminal 40a. The connecting portions between the clamping pieces 42b, 42b and the curved recess 45 are curved, and the clamping pieces 42b, 42b and the curved recess 45 are smoothly connected.

The contact portions 43b, 43b are protrusions that protrude upward and toward the center in the width direction from the upper ends of the clamping pieces 42b, 42b. is configured to be slightly narrower.
Further, the length of the contact portions 43b, 43b in the height direction H is longer than the length of the contact portions 43a, 43a in the height direction H, as shown in FIGS. 4(a) and 4(b). is configured to be

Furthermore, a tapered surface 46b that slopes downward toward the center in the width direction is formed at the upper end portions of the contact portions 43b, 43b on the center side in the width direction. As shown in FIGS. 4A and 4B, the tapered surface 46b has a gentler slope than the tapered surface 46a.

In the second tuning fork terminal 40b configured in this way, the length of the contact portions 43b, 43b in the height direction H is longer than that of the contact portions 43a, 43a. is larger than the areas of the contact portions 43a, 43a.

As shown in FIGS. 2 and 5, the relay 30 attached to the relay attachment portion 20 is electrically connected to a relay body 31 containing an electric circuit (not shown) and an electric circuit contained in the relay body 31. and a relay terminal 32 protruding downward from the bottom surface of the relay body 31 .

The relay terminal 32 is a plate-shaped terminal having a predetermined plate thickness. The main surface of the relay terminal 32 is aligned with the main surface of the tuning fork terminal 40 at a position corresponding to the tuning fork terminal 40 (the first tuning fork terminal 40 a and the second tuning fork terminal 40 b ) arranged on the relay mounting portion 20 . They are arranged orthogonally (see FIG. 5).

The relay mounting portion 20 configured in this manner is provided inside the electric junction box main body 10, and by mounting the relay 30 from above, the electric circuit provided on the circuit board 21 and the relay main body 31 are provided. It can be electrically connected to an electric circuit. Attachment of the relay 30 to the relay attachment portion 20 will be briefly described below with reference to FIG.

Here, FIG. 6 is an explanatory view showing the mounting process of mounting the relay 30 to the relay mounting portion 20, and FIG. 6B shows a side view of the relay mounting portion 20 and the relay 30 in a state where the relay 30 is assembled to the relay mounting portion 20. FIG.

In order to attach the relay 30 to the relay attachment portion 20, the relay 30 is placed above the relay attachment portion 20 so that the relay terminal 32 protruding downward from the relay body 31 is arranged opposite to the tuning fork terminal 40 erected from the circuit board 21. and move it downwards.

At this time, as shown in FIG. 6A, the contact portion T2 of the contact portions 43b, 43b with the relay terminal 32 is lower than the contact portion T1 of the contact portions 43a, 43a with the relay terminal 32. Since it is arranged on the side, the relay terminal 32 corresponding to the first tuning fork terminal 40a is first guided by the tapered surfaces 46a, 46a and arranged between the contact portions 43a, 43a. By pushing and moving the relay 30 downward in this state, the relay terminal 32 is inserted between the contact portions 43a, 43a.

Then, by further pushing the relay 30 downward and moving it, the relay terminal 32 corresponding to the contact portions 43b, 43b is arranged between the contact portions 43b, 43b, and the contact portions 43b, 43b are arranged between the contact portions 43b, 43b. (see FIG. 6(b)). Thereby, the relay 30 can be attached to the relay attachment portion 20 .

In this way, the timing at which the relay terminal 32 is inserted into the first tuning fork terminal 40a and the second tuning fork terminal 40b are different, so the insertion force required to push the relay 30 into the relay mounting portion 20 can be reduced. can be done.

In particular, the base ends of the contact portions 43b, 43b of the second tuning fork terminal 40b are closer to the base end side along the height direction H than the base ends of the contact portions 43a, 43a of the other first tuning fork terminal 40a. 6(b)), the clamping pieces 42b, 42b of the second tuning fork terminal 40b can be shortened, so that the deflection can be reduced and the gripping force can be improved with a simple configuration.

The method for measuring the relative gripping force of the tuning fork terminal 40 is as follows: After inserting the relay terminal 32 between the contact portions 43, 43, move the relay 30 at a predetermined speed (10 to 100 mm/min) in the insertion direction. It is measured by pulling in opposite directions and measuring the force required to release the assembled state of the relay terminal 32 from each tuning fork terminal 40 .

In this way, the relay mounting portion 20 is electrically connected by assembling the relay 30 composed of the relay main body 31 and a plurality of (five) plate-shaped relay terminals 32 protruding from the relay main body 31. A plurality (five) of tuning fork terminals 40 (first tuning fork terminal 40a, second tuning fork terminal 40b) for holding terminal 32 are provided. A pair of clamping pieces 42 (clamping pieces 42a, 42a, clamping pieces 42b, 42b) provided so that the end side is connected and the tip side is open, and the clamping pieces 42, 42 (clamping pieces 42a, 42a, clamping The contact portions 43, 43 (contact portion 43a, 43a, and contact portions 43b, 43b), which are aligned with the first direction F and are spaced apart by a predetermined distance in the second direction S orthogonal to the first direction F (three ) in which the first tuning fork terminal 40a is arranged, the first tuning fork terminal 40a and the second The second tuning fork terminal 40b arranged in the second direction S in the second direction S of the first gripping portion group 22 in the second gripping portion group 23 constitutes a second gripping portion group 23 in which the tuning fork terminal 40b is arranged Since the gripping force is stronger than that of the first tuning fork terminal 40a, the gripping force for gripping the relay terminal 32 can be improved, and contact failure of the relay terminal 32 due to vehicle vibration or the like can be suppressed.

More specifically, since the second tuning fork terminal 40b is arranged in the central portion of the first gripping portion group 22 in the second direction S in the second gripping portion group 23, that is, the second tuning fork terminal 40b is located in the central portion of the relay mounting portion 20. Since the two-tuned fork terminal 40b is arranged, the gripping force with which the relay mounting portion 20 as a whole grips the relay terminal 32 can be improved.

In addition, since the second tuning fork terminal 40b firmly grips the relay terminal 32 arranged in the central portion of the relay 30, even if the vehicle on which the relay mounting portion 20 is mounted vibrates, the pivotal movement caused by the vibration can be prevented. can be used as a contact portion with the second tuning fork terminal 40b, pivoting due to vibration can be suppressed.

In addition, compared to the case where the pivot axis is the contact portion T1 between the first tuning fork terminal 40a and the relay terminal 32, the relay terminal 32 (that is, the second tuning fork terminal 40b) that is the pivot axis is gripped. The distance between the relay terminal 32) and the relay terminal 32 held by the first tuning fork terminal 40a can be shortened. Therefore, it is possible to shorten the pivoting distance of the relay terminal 32 gripped by the first tuning fork terminal 40a due to the vibration of the vehicle. Therefore, the relay 30 can be stably held by the relay mounting portion 20, and contact failure between the relay terminal 32 and the first tuning fork terminal 40a due to vibration can be suppressed.

In addition, since the clamping pieces 42b, 42b of the second tuning fork terminal 40b are configured to be shorter than the clamping pieces 42a, 42a of the first tuning fork terminal 40a, bending of the second tuning fork terminal 40b can be reduced. The holding force of 40b can be stronger than that of the first tuning fork terminal 40a. As a result, the grip force for gripping the relay terminal 32 can be improved, and the relay mounting portion 20 can stably grip the relay 30 .

Further, as in this embodiment, by shortening the clamping pieces 42b, 42b, the tip positions of the contact portions 43b, 43b of the second tuning fork terminal 40b are adjusted to the tip positions of the contact portions 43a, 43a of the first tuning fork terminal 40a. By lowering the distance, the timing at which the relay terminal 32 contacts the first tuning fork terminal 40a and the timing at which the second tuning fork terminal 40b contacts can be shifted. to the relay mounting portion 20 can be reduced.

Further, the contact portions 43b, 43b of the second tuning fork terminal 40b have a surface area along the insertion direction of the relay terminal 32 larger than the corresponding area of the first tuning fork terminal 40a. The gripping force of the tuning fork terminal 40b can be improved, and the electrical conductivity between the relay terminal 32 and the second tuning fork terminal 40b can be improved.

Furthermore, since the contact area between the contact portions 43b and 43b and the relay terminal 32 can be increased, the contact portion between the second tuning fork terminal 40b and the relay terminal 32 is prevented from functioning as a pivot shaft. In addition, even if the relay terminal 32 pivots due to vibration, the contact portions 43b, 43b can suppress the pivoting of the relay terminal 32. Therefore, contact failure of the relay terminal 32 held by the first tuning fork terminal 40a can be suppressed more reliably.

In addition, the contact portions 43, 43 (contact portions 43a, 43a, contact portions 43b, 43b) facing the base end side of the insertion direction of the relay terminal 32 are attached to the contact portions 43, 43 (contact portions 43a, 43a, contact portions 43b, 43b). 43a, contact portions 43b, 43b) are provided, and tapered surfaces 46, 46 (tapered surfaces 46a, 46a, tapered surfaces 46b, 46b) are provided. Since the tapered surfaces 46a, 46a of the one tuning fork terminal 40a are formed with a gentler slope than the tapered surfaces 46a, 46a, the relay terminal 32 can be guided to the tuning fork terminal 40 (the first tuning fork terminal 40a, the second tuning fork terminal 40b). The relay 30 can be securely attached.

In addition, since the tapered surfaces 46b, 46b of the second tuning fork terminal 40b are configured with slopes that are gentler than the tapered surfaces 46a, 46a of the first tuning fork terminal 40a, the contact portion 43b of the second tuning fork terminal 40b , 43b can be increased, and the gripping force of the second tuning fork terminal 40b can be improved.

Furthermore, the second tuning fork terminal 40b is the second gripping portion group which is the side with the smaller number of tuning fork terminals 40 arranged at a predetermined interval between the first gripping portion group 22 and the second gripping portion group 23. 23, it is possible to prevent the gripping force in the second direction S, in which the number of tuning fork terminals 40 is small, from decreasing.

In correspondence with the configuration of this invention and the above-described embodiments,
The terminal gripping portion corresponds to the tuning fork terminal 40 (first tuning fork terminal 40a, second tuning fork terminal 40b),
The strong grip portion corresponds to the second tuning fork terminal 40b, but the present invention is not limited to the configurations of the above-described embodiments, and many embodiments can be obtained.

For example, in the present embodiment, the second tuning fork terminal 40b corresponding to the strong grip portion is configured so that the length of the clamping pieces 42b, 42b with respect to the height direction H is shorter than the clamping pieces 42a, 42a, The length of the contact portions 43b, 43b with respect to the height direction H is longer than the contact portions 43a, 43a, but this configuration is not necessarily required. 7(c).

Here, FIG. 7 shows a front view showing another embodiment of the second tuning fork terminal 40b. Specifically, FIG. 7A shows a front view of the first tuning fork terminal 40a shown for reference, and FIG. A front view is shown, and FIG.7(c) shows the front view of the strong-grip part 40d which is other embodiment of the 2nd tuning fork terminal 40b. Moreover, FIG.7(d) and FIG.7(e) show the top view of the relay attachment part 20 in other embodiment.

For example, instead of the second tuning fork terminal 40b, as shown in FIG. As shown in (c), the strong grip portion 40d may be formed by increasing the overall length in the height direction H and the lengths of the contact portions 43d, 43d.

In addition, while the length of the second tuning fork terminal 40b arranged in the central portion in the height direction H remains unchanged, the length of the first tuning fork terminal 40a arranged outside in the height direction H is made shorter than the second tuning fork terminal 40b. It is good also as a structure which carries out. That is, the relationship between the second tuning fork terminal 40b and the first tuning fork terminal 40a is relative rather than absolute.

Further, in the present embodiment, the second tuning fork terminal 40b is arranged on the side of the first gripping portion group 22 in the second gripping portion group 23, but it does not necessarily have to be placed at this position. As shown in (d), the second tuning fork terminal 40b may be arranged in the center of the first gripping portion group 22, and further, as shown in FIG. and may be arranged at a position on the first gripping portion group 22 side of the second gripping portion group 23 .

In this embodiment, the relay 30 has five relay terminals 32, and the relay mounting portion 20 has a corresponding number of tuning fork terminals 40 (first tuning fork terminal 40a, second tuning fork terminal 40b). However, the relay 30 may have four relay terminals 32, and the number of tuning fork terminals 40 (first tuning fork terminal 40a, second tuning fork terminal 40b) may be matched accordingly. .

In addition, the arrangement position of the relay terminal 32 may be appropriately changed according to the design. In this case, the arrangement position of the corresponding tuning fork terminals 40 (the first tuning fork terminal 40a and the second tuning fork terminal 40b) may be changed as a matter of course. It should be noted that the second tuning fork terminal 40b must be arranged near the center of the relay mounting portion 20. As shown in FIG.

Furthermore, in the present embodiment, although the tuning fork terminals 40 constituting the first gripping portion group 22 are arranged side by side along the second direction S, the center first tuning fork terminal 40a is aligned in the first direction F. However, the first tuning fork terminals 40a may be arranged on a straight line, or the three first tuning fork terminals 40a may be shifted with respect to the first direction F, respectively. As long as the main surface of the tuning fork terminal 40 faces the first direction F, the shifting direction does not matter.
Similarly, the positions of the first tuning fork terminal 40a and the second tuning fork terminal 40b constituting the second gripping portion group 23 may be changed as appropriate.

1 electrical junction box 20 relay mounting portion 22 first grip portion group 23 second grip portion group 30 relay 31 relay body 32 relay terminal 40 tuning fork terminal 40a first tuning fork terminal 40b second tuning fork terminal 42, 42a, 42b clamping piece 43, 43a, 43b contacting portions 46, 46a, 46b tapered surface F first direction S second direction

Claims (7)

A relay mounting portion for assembling and electrically connecting a relay composed of a relay body and a plurality of plate-shaped relay terminals projecting from the relay body,
A plurality of terminal gripping portions for gripping the relay terminals are provided,
The terminal holding part is
A pair of clamping pieces that are connected on the base end side and are provided so that the tip side is open, and a contact portion that protrudes toward the clamping piece that faces the clamping piece on the tip side of the clamping pieces and contacts the relay terminal. configured,
a first gripping portion group in which a plurality of the terminal gripping portions are arranged at predetermined intervals in a second direction perpendicular to the first direction and oriented along the first direction;
a second gripping portion group in which a plurality of the terminal gripping portions are arranged along the second direction and at predetermined intervals in the first direction;
The terminal gripping portion arranged in the second direction central portion of the first gripping portion group, and the terminal gripping portion arranged in the second direction central portion of the first gripping portion group of the second gripping portion group. and at least one of the terminal gripping portions is a strong gripping portion having a stronger gripping force than the other terminal gripping portions. 3. The clamping piece of the strong gripping portion has a length along the direction of insertion of the relay terminal that is shorter than the length of the clamping piece of the other terminal gripping portion along the direction of insertion of the relay terminal. 1. The relay mounting portion according to 1. The contact portion of the strong grip portion is
3. The relay mounting portion according to claim 1, wherein the other terminal gripping portion is longer than the corresponding contact portion along the insertion direction of the relay terminal. The contact portion of the strong grip portion is
4. The relay according to any one of claims 1 to 3, wherein the relay is provided on the distal end side or the proximal end side along the inserting direction of the relay terminal, relative to the position of the contact portion of the other terminal gripping portion. Mounting part. A tapered surface inclined toward the opposing contact portion is provided on a base end side of the contact portion in an insertion direction of the relay terminal,
5. The relay mounting portion according to claim 1, wherein the tapered surface of the strong gripping portion has a gentler slope than the tapered surfaces of the other terminal gripping portions. The strong grip part is
6. Any one of claims 1 to 5, provided on the side of the first gripping portion group or the second gripping portion group where the number of the terminal gripping portions arranged at predetermined intervals is small. relay mounting part described in . An electric connection box provided with the relay mounting portion according to any one of claims 1 to 6.

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