JP4606375B2 - Electrical connection component with a slit-like housing for inserting the bus bar in the housing - Google Patents

Description

  The present invention relates to an electrical connection component such as a fusible link block electrically connected to a fusible link, and more particularly, a slit for inserting a bus bar electrically connected to a terminal of an electrical component such as a fusible link. The present invention relates to an electrical connection component including a plastic housing made of a plastic housing (that is, a slotted housing).

  This type of electrical connection component includes a bus bar, and a housing having a slit-like accommodation portion in which the bus bar is inserted and accommodated in a direction orthogonal to the thickness direction of the bus bar. An inlet formed at least partially by the inner surface of the wall portion, the slit-shaped housing portion opens at the end face of the end portion of the outer peripheral wall portion, and the opening of the slit-shaped housing portion inserts the bus bar into the slit-shaped housing portion There is an electrical connection component (see, for example, Patent Document 1).

  The housing of such an electrical connection component is formed by injection molding or the like of synthetic resin. In the resin molding of this housing, it is necessary to give sufficient consideration to prevent the above-described outer peripheral wall portion from curving in a curved shape in the thickness direction of the bus bar so as to narrow the slit-shaped accommodation portion. This is because the slit-like accommodation portion is a narrow space, and even a slight inward warping of the outer peripheral wall portion prevents the bus bar from being inserted.

  Therefore, it is better to provide a structure for preventing the outer wall of the outer peripheral wall on the outer surface, but by doing so, the structure of the mold for housing molding becomes complicated, and the cost for manufacturing the mold is reduced. Invite to rise.

  Specifically, the mold for housing molding described above is disposed on the end side of the outer peripheral wall portion of the housing and from the opening in a direction opposite to the insertion direction of the bus bar to the opening of the slit-shaped housing portion after resin curing. The upper mold having a portion to be pulled out, and the other opening after the resin is cured by being arranged on the other end side of the outer peripheral wall portion of the housing provided with another opening for electrically connecting the electrical component and the bus bar A lower die having a portion that is pulled out in the insertion direction of the bus bar from the slit-shaped housing portion, and an upper die and a lower die for forming a structure for preventing the inner wall of the outer peripheral wall portion from being warped on the outer surface of the outer peripheral wall portion. And a slide mold that is slidably disposed between the molds. Providing a slide mold should be avoided as much as possible because it increases the cost of mold production.

JP 2001-8332 A

  The present invention has been made in view of the above-described circumstances, and an object thereof is to effectively warp the outer peripheral wall portion of the housing in the thickness direction of the bus bar so as to narrow the opening side of the slit-like accommodation portion. It is an object of the present invention to provide an electrical connection part that has a structure that can prevent the above-described problem and that does not require the use of a slide mold for forming the structure.

In order to achieve the above-described object, the electrical connection component according to the present invention is characterized by the following (1) to (3).
(1) Bus bar,
A housing made of synthetic resin having a slit-like accommodation portion in which the bus bar is inserted and accommodated in a direction perpendicular to the thickness direction thereof;
With
Wherein the inner surface of the outer peripheral wall portion of the slit-shaped receiving portion said housing, made form by between distal end surface of the plurality of guide protrusions integrally formed to face each other,
The slit-shaped housing portion opens at an end surface of the end portion of the outer peripheral wall portion, and the opening of the slit-shaped housing portion serves as an inlet for inserting the bus bar into the slit-shaped housing portion.
Electrical connection parts,
When there is a possibility that the outer peripheral wall may bend in a curved shape in the thickness direction of the bus bar so as to narrow the slit-shaped accommodating portion, the outer peripheral wall portion protrudes from one or both outer surfaces and the slit-shaped accommodating further comprising a further first in warp prevention protruding portion integrally formed on an end portion of the outer peripheral wall portion so as to extend along the longitudinal direction of the section of the opening.
(2) In the electrical connection component having the configuration of (1) above,
The first inward warpage preventing ridge portion has a surface that is flush with an end surface of the end portion of the outer peripheral wall portion.
(3) In the electrical connection component having the above configuration (1) or (2),
And further comprising at least one second inward warpage preventing protrusion that is integrally formed on an outer surface of the outer peripheral wall where the first inward warping prevention protrusion is formed,
The at least one second inward warpage preventing ridge extends in a direction parallel to a direction in which the bus bar is inserted into the slit-shaped accommodation portion, and is connected to the first inward warping prevention ridge.

According to the electrical connection component having the above configuration (1), the first part integrally formed at the end of the outer peripheral wall portion so as to protrude from the outer surface of the outer peripheral wall portion and extend along the longitudinal direction of the opening of the slit-shaped housing portion. It is provided with the 1 in warp prevention protrusions to further, is possible to prevent the outer peripheral wall is inward deformation to the curved shape in the thickness direction of the bus bar so as to narrow the opening and near the slit-like accommodating portion Therefore, smooth insertion of the bus bar into the slit-shaped housing portion can be realized. In addition, the electrical connection component having the above-described configuration (1) has a configuration in which the first inward warpage preventing protrusion is formed on the outer surface of the end portion of the outer peripheral wall portion of the housing. As described above, it is not necessary to use one including a slide mold for forming the first inward warpage preventing protrusion on the outer surface of the outer peripheral wall. Therefore, according to the electrical connection component having the configuration of (1), the opening is arranged in the direction opposite to the insertion direction of the bus bar to the opening of the slit-shaped housing portion after being cured by being disposed on the end portion side of the outer peripheral wall portion of the housing. A first mold having a portion to be removed from the first mold, and disposed opposite to the first mold (that is, disposed on the other end portion side opposite to the end portion of the outer peripheral wall portion). And a second mold having a portion that is pulled out from the housing in the insertion direction of the bus bar into the slit-shaped housing portion after the resin is cured, the housing can be molded.
In the electrical connection component having the configuration of (2) above, the first inward warpage preventing protrusion has a surface that is flush with the end face of the end of the outer peripheral wall, in other words, the first inward warping prevention protrusion. Partially forms the end face of the end of the outer peripheral wall. Therefore, according to the electrical connection component having the configuration of (2), it is effective that the outer peripheral wall is curved in a curved shape in the thickness direction of the bus bar so as to narrow the opening of the slit-shaped accommodation portion and the vicinity thereof. Further, the structure of the first mold described above can be further simplified.
According to the electrical connection component having the configuration of (3) above, the at least one second inward warpage preventing protrusion that extends in a direction parallel to the direction in which the bus bar is inserted into the slit-shaped accommodation portion is provided with the first inward warping prevention protrusion. Since it is integrally formed on the outer surface of the outer peripheral wall portion of the housing so as to connect to the strip portion, the curved inner warp of the outer peripheral wall portion in the direction intersecting with the extending direction of the first inward warpage preventing ridge portion is effective. Can be prevented. In addition, in the electrical connection component having the above-described configuration (3), the second inward warpage preventing ridge extends in a direction parallel to the direction in which the bus bar is inserted into the slit-shaped housing portion. When the portion extends only in one direction from the first inward warpage preventing protrusion, a groove for forming the second inward warping prevention protrusion is provided in the second mold, and the second inward warping prevention protrusion is When extending in the direction opposite to the direction in which the bus bar is inserted into the slit-shaped housing portion, a groove for forming the second inward warping prevention protrusion may be provided in the first mold described above. As a mold, the outer peripheral wall can be reinforced without using a slide mold.

  According to the present invention, there is provided a structure capable of effectively preventing the outer peripheral wall portion of the housing from inwardly bending in the thickness direction of the bus bar so as to narrow the opening side of the slit-shaped accommodating portion, and the slide is performed to form the structure. An electrical connection component that does not require the use of a mold can be provided.

  The present invention has been briefly described above. Furthermore, the details of the present invention will be further clarified by reading through the best mode for carrying out the invention described below with reference to the accompanying drawings.

  Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to FIGS. 1 to 4B. FIG. 1 is a perspective view of one embodiment of an electrical connection component according to the present invention and electrical components electrically connected thereto, and FIG. 2 is mainly an opening formed at one end of the electrical connection component of FIG. FIG. 3 is a perspective view for explaining, FIG. 3 is a cross-sectional view mainly showing a main part for molding one end of the housing in an example of a mold for molding the housing of the electrical connection component shown in FIG. 1 and FIG. 4 (a) is an enlarged plan view showing a portion of the end face of the housing in the ellipse IV (a) drawn by a chain line in FIG. 1, and FIG. 4 (b) is provided with a first inward warping prevention protrusion. It is a top view which shows the reference example for demonstrating the case where there was not corresponding to the site | part shown by Fig.4 (a) by contrast.

  As shown in FIG. 1, an electrical connection component 10 according to an embodiment of the present invention is a fusible link block that is electrically connected to a blade-type fuse (fusible link) 50 that is an electrical component, and an electrical connection box. It is of the type accommodated in (not shown). As shown in FIG. 1 and FIG. 2, the electrical connection component 10 is made of a synthetic resin having a bus bar 20 and a slit-like accommodation portion 35 in which the bus bar 20 is inserted and accommodated in a direction perpendicular to the thickness direction. Housing 30.

  The slit-shaped accommodation portion 35 is partially formed by the inner surface 32 of the outer peripheral wall portion 31 of the housing 30. The slit-shaped accommodating portion 35 opens at the end surface 34 of one end portion 33 of the outer peripheral wall portion 31 (in other words, one end portion 33 of the housing 30). The opening 36 of the slit accommodation portion 35 serves as an inlet for inserting the bus bar 20 into the slit accommodation portion 35. On the inner surface 32 of the outer peripheral wall portion 31 of the housing 30, one end portion of the outer peripheral wall portion 31 from the opening 36 side in the direction in which the bus bar 20 is inserted into the opening 36 of the slit accommodation portion 35 (insertion direction A: see FIG. 1). A plurality of guide protrusions 42 extending toward the other end located on the side opposite to 33 are integrally molded so as to face each other. The plurality of guide protrusions 42 form a slit-shaped accommodation portion 35 at their tip surfaces.

  The electrical connection component 10 is further integrally formed with the one end portion 33 of the outer peripheral wall portion 31 so as to protrude from the outer surface 37 of the outer peripheral wall portion 31 of the housing 30 and extend along the longitudinal direction of the opening 36 of the slit-shaped accommodating portion 35. One of the first inward warpage preventing protrusions 38 is provided. The first inward warpage preventing ridge portion 38 has a surface that is flush with the end surface 34 of the one end portion 33 of the outer peripheral wall portion 31.

  The electrical connection component 10 further includes a plurality of second inward warpage preventing protrusions 39 integrally formed on the outer surface 37 of the outer peripheral wall portion 31 in which the first inward warping prevention protrusions 38 are formed. The second inward warpage preventing ridge portion 39 extends in a direction parallel to the direction in which the bus bar 20 is inserted into the slit-shaped accommodation portion 35 (insertion direction A), and is connected to the first inward warpage prevention ridge portion 38. (That is, they are integrally formed).

  The housing 30 of the electrical connection component 10 has another opening for electrically connecting the blade type terminal 51 of the blade type fuse 50, the bus bar 20, and other electrical terminals of the outer peripheral wall portion 31 of the housing 30. A plurality of ends are formed on the end surface of the other end located on the side opposite to the one end 33. In addition, groove-shaped terminal contact portions for receiving one blade-type terminal 51 of the blade-type fuse 50 are formed at the end portion of the bus bar 20 located in the other end portion of the outer peripheral wall portion 31. Each blade-type fuse 50 has the other end of the outer peripheral wall portion 31 in the direction B opposite to the direction (insertion direction A) in which one of the blade-type terminals 51 is inserted into the slit-shaped accommodating portion 35. It is inserted into the groove-shaped terminal contact portion of the bus bar 20 through the opening of the portion, and is electrically connected. The other blade-type terminal 51 of each blade-type fuse 50 is electrically connected through an electrical terminal and an opening disposed in the housing portion 41 that partially forms the outer surface of the other end portion of the housing 30. Connecting.

  Three engaging portions 40 are formed on the outer surface 37 of the outer peripheral wall portion 31 of the housing 30, and these engaging portions 40 are electrically connected when the electrical connection component 10 is accommodated in an electrical connection box (not shown). Engaging with a locking portion (not shown) of the connection box, the electric connection component 10 is fixed in the electric connection box (not shown).

  The housing 30 of such an electrical connection component 10 is formed by injection molding or the like of synthetic resin. In the resin molding of the housing 30, as already described above, sufficient consideration is given to prevent the outer peripheral wall portion 31 from curving in a curved shape in the thickness direction of the bus bar 20 so as to narrow the slit-like accommodation portion 35. There is a need to. Therefore, in the electrical connection component 10, the first inner warpage preventing ridge portion 38 and the first inner warpage preventing ridge portion for effectively preventing the inner warp of the outer peripheral wall portion 31 on the outer surface 37 of the outer peripheral wall portion 31. A second inward warpage preventing protrusion 39 that is orthogonal to the portion 38 is provided.

  The housing 30 is designed to be moldable with two molds. That is, there is no need to provide a slide mold that is slidably disposed between the two molds for molding the housing 30, and the cost for mold production can be reduced. The principal part of an example of the metal mold | die for shape | molding the housing 30 is shown by FIG. Specifically, this mold is arranged on one end 33 side of the outer peripheral wall portion 31 of the housing 30 and is removed from the opening 36 in the direction C opposite to the insertion direction A of the bus bar 20 into the slit-like accommodation portion 35 after resin curing. On the other end side of the outer peripheral wall 31 of the housing 30 provided with another opening for electrically connecting the blade mold 50 and the bus bar 20 to the upper mold 60 as a first mold having a portion. And a lower mold 70 as a second mold having a portion that is disposed and pulled out from the other opening in the same direction D as the insertion direction A of the bus bar 20 into the slit-shaped accommodation portion 35 after the resin is cured.

  As described above, in the electrical connection component 10, the one end portion 33 of the outer peripheral wall portion 31 protrudes from the outer surface 37 of the outer peripheral wall portion 31 and extends along the longitudinal direction of the opening 36 of the slit-shaped accommodating portion 35. One integrally formed first inward warpage preventing protrusion 38 is further provided. Further, the first inward warpage preventing ridge portion 38 has a surface that is flush with the end surface 34 of the one end portion 33 of the outer peripheral wall portion 31, in other words, the first inward warpage preventing ridge portion 38 is the outer peripheral wall portion 31. The end face 34 of the one end 33 is partially formed. Accordingly, it is possible to effectively prevent the outer peripheral wall portion 31 from curving in a curved direction in the thickness direction of the bus bar 20 so as to narrow the opening 36 of the slit-shaped accommodation portion 35 and the vicinity thereof {FIG. ) Reference}, and therefore, smooth insertion of the bus bar 20 into the slit-shaped accommodating portion 35 can be realized.

  In addition, according to the electrical connection component 10, the plurality of second inward warpage preventing protrusions 39 extending in the direction parallel to the direction in which the bus bar 20 is inserted into the slit-shaped accommodation portion 35 (insertion direction A) are Since it is integrally formed on the outer surface 37 of the outer peripheral wall portion 31 of the housing 30 so as to be connected to the warp preventing ridge portion 38, the outer peripheral wall portion 31 in a direction intersecting with the extending direction of the first inner warpage preventing ridge portion 38. It is possible to effectively prevent the curved inner warp.

However, as shown as a reference example in FIG. 4B, in an electrical connection component in which the housing 30 is not provided with the first inward warping prevention protrusion portion 38, the slit-like accommodation portion 35 is provided on the outer periphery of the housing 30. By forming the inner surface 32 of the wall portion 31, even if the housing 30 is provided with a plurality of second inward warping prevention protrusions 39 , the outer peripheral wall portion 31 is formed into a slit-shaped accommodation portion in the resin molding of the housing 30. There is a possibility that it is not possible to effectively prevent warping in the curved direction in the thickness direction of the bus bar 20 so as to narrow the opening 36 of the 35 and its vicinity. Accordingly, only the first inward warpage preventing ridge portion 38 is formed in the housing 30 or both the first inward warpage preventing ridge portion 38 and the second inward warpage preventing ridge portion 39 are formed in the housing 30. Are preferred.

  Now, as described above, the electrical connecting component 10 takes the form in which the first inward warpage preventing protrusions 38 are formed on the outer surface 37 of the one end 33 of the outer peripheral wall 31 of the housing 30. It is not necessary to use a mold that includes a slide mold for forming the first inward warpage preventing protrusion 38 on the outer surface 37 of the outer peripheral wall 31. Therefore, according to the electrical connection component 10, it is arranged on the one end portion 33 side of the outer peripheral wall portion 31 of the housing 30 and from the opening 36 in the direction C opposite to the insertion direction A of the bus bar 20 into the slit-like accommodation portion 35 after resin curing. A first mold having a portion to be pulled out and disposed opposite to the first mold (that is, disposed on the other end side opposite to the one end 33 of the outer peripheral wall portion 31). The housing 30 can be molded with a mold including a second mold having a portion that is pulled out from the housing 30 in the insertion direction A of the bus bar 20 into the slit-shaped accommodation portion 35 after the resin is cured.

  In addition, in the electrical connection component 10, the second inward warpage preventing protrusion 39 extends in a direction parallel to the direction (insertion direction A) in which the bus bar 20 is inserted into the slit-shaped accommodation portion 35. Therefore, according to the electrical connection component 10, the second inward warpage preventing protrusion 39 extends from the first inward warping prevention protrusion 38 only in one direction. What is necessary is just to provide the groove | channel which shape | molds the protrusion part 39, and can reinforce the outer peripheral wall part 31 as a metal mold | die which shape | molds the housing 30, without using a slide metal mold | die. Further, since the first inward warpage preventing protrusion 38 has a surface that is flush with the end surface 34 of the one end portion 33 of the outer peripheral wall portion 31, the structure of the first mold can be further simplified.

  In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably. In addition, the material, shape, form, number, location, and the like of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.

  In addition, the electrical connection component of this invention may take the form by which a slit-shaped accommodating part is formed entirely by the inner surface of the outer peripheral wall part of a housing.

  In addition, if at least one second inward warping prevention protrusion is formed in the housing, a desired effect is obtained, but it is more preferable that a plurality of second inward warpage prevention protrusions are formed.

  Further, the first inward warpage preventing ridge portion may be formed in a stepped shape instead of being flush with the end face of the one end portion of the outer peripheral wall portion. Thus, in the form in which the first inward warpage preventing ridge portion is formed in a stepped shape with respect to the end surface of the one end portion of the outer peripheral wall portion, the second inward warpage preventing ridge portion is the first inward warpage preventing ridge portion. In the case of extending not only in one direction but also in the direction opposite to the direction in which the bus bar is inserted into the slit-shaped accommodating portion (that is, extending toward the end face of one end portion of the outer peripheral wall portion), Since it is only necessary to provide a groove for forming the second inward warpage preventing protrusion in one mold, the outer peripheral wall can be reinforced without using a slide mold as a mold for forming the housing.

  The electrical connection component of the present invention has a structure that can effectively prevent the outer peripheral wall portion of the housing from warping in the thickness direction of the bus bar so as to narrow the opening side of the slit-shaped housing portion, and molding the structure. For example, it is useful for a fusible link block that is electrically connected to the fusible link.

It is a perspective view of one Embodiment of the electrical connection component which concerns on this invention, and the electrical component electrically connected to it. FIG. 2 is a perspective view for mainly explaining an opening formed in one end portion of the electrical connection component of FIG. 1 and its periphery. It is sectional drawing which mainly shows the principal part for shape | molding the one end part of the housing in an example of the metal mold | die which shape | molds the housing of the electrical connection component shown by FIG. 1 and FIG. (A) is an enlarged plan view showing a portion of the end face of the housing in the ellipse IV (a) drawn by a chain line in FIG. 1, and (b) is a case where the first inward warpage preventing protrusion is not provided. FIG. 5 is a plan view showing a comparative example for explaining the above in correspondence with the portion shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10: Electrical connection component 20: Bus bar 30: Housing 31: Outer peripheral wall part 32: Inner surface 33 of outer peripheral wall part: One end part 34 of outer peripheral wall part: End surface 35: Slit-shaped accommodating part 36: Opening 37: Outer surface of outer peripheral wall part 38: First inward warpage prevention protrusion 39: Second inward warpage prevention protrusion

Claims (3)

A bus bar,
A housing made of synthetic resin having a slit-like accommodation portion in which the bus bar is inserted and accommodated in a direction perpendicular to the thickness direction thereof;
With
Wherein the inner surface of the outer peripheral wall portion of the slit-shaped receiving portion said housing, made form by between distal end surface of the plurality of guide protrusions integrally formed to face each other,
The slit-shaped housing portion opens at an end surface of the end portion of the outer peripheral wall portion, and the opening of the slit-shaped housing portion serves as an inlet for inserting the bus bar into the slit-shaped housing portion.
Electrical connection parts,
When there is a possibility that the outer peripheral wall may bend in a curved shape in the thickness direction of the bus bar so as to narrow the slit-shaped accommodating portion, the outer peripheral wall portion protrudes from one or both outer surfaces and the slit-shaped accommodating the outer peripheral wall portion electrically connecting parts which is characterized by comprising a further first in warp prevention protruding portion integrally formed on an end portion of the to extend along the longitudinal direction of the section of the opening.   2. The electrical connection component according to claim 1, wherein the first inward warpage preventing ridge has a surface that is flush with an end surface of an end of the outer peripheral wall. And further comprising at least one second inward warpage preventing protrusion that is integrally formed on an outer surface of the outer peripheral wall where the first inward warping prevention protrusion is formed,
The at least one second inward warpage preventing ridge extends in a direction parallel to a direction in which the bus bar is inserted into the slit-shaped accommodating portion, and is connected to the first inward warping prevention ridge. The electrical connection component according to claim 1 or 2.

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