WO2021193849A1 - Terminal block - Google Patents

Abstract

One aspect of the present disclosure provides a terminal block capable of improving the positional accuracy of terminal fittings. A terminal block (10) according to one aspect of the present disclosure comprises a metal plate (20) and a plurality of terminal units (31-33) held on the plate (20). The plate (20) has: a first surface and a second surface facing opposite sides; and a plurality of openings (23-25) which penetrate the plate (20) from the first surface to the second surface and to which the plurality of terminal units (31-33) are respectively fixed. Each of the plurality of terminal units (31-33) has: a housing (40) made of resin and fixed to the corresponding one of the openings (23-25) of the plate (20); and a terminal fitting (50) held by the housing (40) in a state of penetrating the openings (23-25) of the plate (20). The plurality of terminal units (31-33) are separated from each other and integrated via the plate (20).

Description

Terminal block

This disclosure relates to a terminal block.

Patent Document 1 describes a terminal block connected to a motor case. This terminal block is used for connecting the motor and the inverter. The terminal block disclosed in Patent Document 1 fixes a pedestal housed inside the motor case, three terminal shafts extending from the pedestal, a terminal plate protruding inside the motor case, and a terminal block to the motor case. Has a plate for. The three terminal shafts fit into the three through holes formed in the mounting base of the motor case.

Japanese Unexamined Patent Publication No. 2013-110817

By the way, the above pedestal and terminal shaft are generally made of insulating resin and are integrally formed by molding. In this case, the terminal shaft and the terminal plate may be tilted due to the resin deformation after molding, so-called inward tilting may occur. Therefore, the positional accuracy of the pedestal and the terminal shaft is lowered, and the assembling property to the motor case is lowered.

The purpose of the present disclosure is to provide a terminal block capable of improving the positional accuracy of the terminal fittings.

The terminal block of the present disclosure includes a metal plate and a plurality of terminal units held by the plates, and the plates have first and second surfaces facing opposite sides and the first surface. Each of the plurality of terminal units has a plurality of openings through the plate from the surface to the second surface to which the plurality of terminal units are fixed, and each of the plurality of terminal units corresponds to the openings of the plate. It has a resin housing fixed to one and a terminal metal fitting held by the housing in a state of penetrating the opening of the plate, and the plurality of terminal units are separated from each other and separated from each other. , Are integrated via the plate.

According to the present disclosure, it is possible to provide a terminal block capable of improving the positional accuracy of the terminal fittings.

FIG. 1 is a perspective view of a terminal block according to an embodiment. FIG. 2 is a front view of the terminal block. FIG. 3 is a top view of the terminal block. FIG. 4 is a side view of the terminal block. FIG. 5 is a cross-sectional view taken along line 5-5 of FIG. FIG. 6 is a partial cross-sectional view showing a usage state of the terminal block.

[Explanation of Embodiments of the present disclosure]
First, embodiments of the present disclosure will be listed and described.

[1] The terminal block of the present disclosure includes a metal plate and a plurality of terminal units held by the plates, and the plates have a first surface and a second surface facing opposite sides, and the above. The plate is penetrated from the first surface to the second surface, and each of the plurality of terminal units has a plurality of openings to which the plurality of terminal units are fixed, and each of the plurality of terminal units is one of the openings of the plate. It has a resin housing fixed to one of the above, and a terminal fitting held by the housing in a state of penetrating the opening of the plate, and the plurality of terminal units are separated from each other. At the same time, they are integrated via the plate.

According to this configuration, a plurality of terminal units having a resin housing and a terminal fitting held by the housing are insert-molded into a metal plate, whereby the resin housing is shrink-deformed after molding. It is possible to suppress the inward fall of the terminal fitting and improve the positioning accuracy of the terminal fitting.

[2] The plurality of terminal units are each inserted into a plurality of through holes formed in a case to which the terminal block is attached, and the housing of the plurality of terminal units has an outer peripheral surface on the case side. It is preferable that a sealing element for sealing with the inner peripheral surface of the through hole is fixed.

According to this configuration, the inward tilt of the terminal fittings is suppressed, so that the inclination of the housing holding each terminal fitting is suppressed, and the terminal unit can be easily inserted into the through hole of the case for attaching the terminal block to the terminal unit. The sealing property between the housing and the through hole of the case can be ensured.

[3] In each terminal fitting, an insertion hole through which a fastening bolt can be inserted is formed at a first end portion arranged inside the case, and each housing holds a nut into which the fastening bolt is screwed. It is preferable to do so.

According to this configuration, since the nut is held in the housing, the conductive member inside the case can be easily fastened to each terminal fitting by screwing the fastening bolt into the nut without preparing a separate nut. can.

[4] In each terminal fitting, it is preferable that a bolt insertion hole into which a fastening bolt can be inserted is formed at a second end portion arranged on the outside of the case.

According to this configuration, since the nut for fastening the conductive member outside the case to the terminal fitting is fixed to the terminal fitting, the housing of the terminal unit can be miniaturized and the shrinkage deformation of the housing after molding can be suppressed.

[Details of Embodiments of the present disclosure]
Specific examples of the terminal block of the present disclosure will be described below with reference to the drawings. The term "parallel" or "orthogonal" in the present specification includes not only the case of strictly parallel or orthogonal, but also the case of being substantially parallel or orthogonal within the range in which the action and effect in the present embodiment are exhibited. In addition, the "rectangular parallelepiped", "flat plate", and "cylindrical" in the present specification refer to a shape in which corners and ridges are chamfered, a shape in which corners and ridges are rounded, and a surface constituting the shape. A shape in which unevenness or the like is formed in part or all is also included. It should be noted that the present invention is not limited to these examples, and is indicated by the scope of claims, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

As shown in FIGS. 1 to 6, the terminal block 10 of the present embodiment has a plate 20, and three terminal units 31, 32, 33.

[Terminal block configuration]
The terminal block 10 is fixed to the case 100 shown in FIG. 6 by the plate 20. The case 100 is, for example, a motor case included in a motor mounted on a vehicle.

The plate 20 is a flat metal plate material. The plate 20 has an upper surface 21 and a lower surface 22 facing opposite sides. The plate 20 has three openings 23, 24, 25 shown in FIG. 2 and two fixing holes 26, 27 shown in FIG. The openings 23 to 25 are arranged in a row along one direction parallel to the upper surface 21 and the lower surface 22 of the plate 20. The openings 23 to 25 are arranged at equal intervals in this order. Each of the openings 23 to 25 penetrates the plate 20 in the plate thickness direction from the upper surface 21 to the lower surface 22 of the plate 20. Each of the fixing holes 26, 27 penetrates the plate 20 in the plate thickness direction from the upper surface 21 to the lower surface 22 of the plate 20. The plate 20 is formed by punching, for example, a metal plate into a predetermined shape by press working. The openings 23 to 25 and the plurality of fixing holes 26, 27 are formed at the same time in the formation of the plate 20. The plate 20 may have a shape having a convex portion or a concave portion on at least one of the upper surface 21 and the lower surface 22 depending on the case 100.

[Terminal unit]
The three terminal units 31 to 33 are fixed to the three openings 23 to 25 of the plate 20, respectively. Since the terminal units 31 to 33 have similar members to each other, the same members are designated by the same reference numerals.

Each of the terminal units 31 to 33 has a housing 40 fixed to the corresponding one of the openings 23 to 25 of the plate 20, and a terminal fitting 50 held by each housing 40.

[Terminal bracket]
Each terminal fitting 50 is formed in a plate shape, for example. Each terminal fitting 50 is made of a conductive metal. The material of each terminal fitting 50 is, for example, a copper-based or aluminum-based metal material. Each terminal fitting 50 is formed by punching a conductive metal plate into a predetermined shape by press working. Each terminal fitting 50 has a form extending in a band shape, has a first fastening portion 51 at one of both end portions thereof, and has a second fastening portion 52 at either end of both ends thereof. doing. The first fastening portion 51 is arranged outside the case 100 shown in FIG. 6, and the second fastening portion 52 is arranged inside the case 100.

As shown in FIGS. 1 and 5, the first fastening portion 51 is formed with a bolt insertion hole 54 that penetrates the first fastening portion 51 in the thickness direction. The bolt insertion hole 54 has a size such that a bolt (not shown) for fastening a connector terminal (neither shown) connected to the terminal of an electric wire as an external conductive member to the first fastening portion 51 is inserted. It is formed. In the present embodiment, the bolt insertion hole 54 has an oval shape extending along the direction in which the terminal fitting 50 extends. The oval shape is, for example, a rounded rectangle having two parallel lines of equal length and two semicircles connecting both ends of the parallel lines.

The second fastening portion 52 is formed with a bolt insertion hole 55 through which a shaft portion of a bolt (not shown) for connecting the wiring or the like inside the case 100 is passed through the terminal fitting 50. Each bolt insertion hole 55 is formed by penetrating each second fastening portion 52 in the plate thickness direction.

As shown in FIG. 2, in each terminal fitting 50, a buried portion 53 embedded in the housing 40 is provided between the first fastening portion 51 and the second fastening portion 52. As shown in FIG. 5, the embedded portion 53 is formed by bending in a crank shape inside the housing 40. The embedded portion 53 bent in this way prevents the terminal fitting 50 from coming off from above and below the housing 40.

[housing]
As shown in FIGS. 1, 2 and 3, the housings 40 of the terminal units 31 to 33 are separated from each other.

The housing 40 is integrated with the terminal fitting 50. Further, the housing 40 is integrated with the plate 20. The housing 40 is integrally molded with the terminal fitting 50 and the plate 20 by, for example, insert molding. Therefore, the housings 40 of the terminal units 31 to 33 are integrated via the plate 20.

As shown in FIGS. 1, 2, 4 to 6, the housing 40 has a fixing portion 41 and a nut holding portion 45.

The fixed portion 41 is formed in a columnar shape. As shown in FIG. 2, the fixing portion 41 has a larger outer shape than the openings 23 to 25 of the plate 20. As a result, the fixing portion 41 is prevented from coming off upward and downward with respect to the plate 20. The terminal fitting 50 integrated with the fixing portion 41 is prevented from coming off upward and downward with respect to the plate 20.

A seal material adhered portion 43 is recessed in the fixed portion 41 over the entire circumference of the outer peripheral surface, and the seal material 65 is disposed in the seal material adhered portion 43. As shown in FIG. 6, the sealing material 65 seals between the through holes 111 to 113 of the case 100 and the fixing portion 41 of the housing 40. Further, as shown in FIG. 6, the fixing portion 41 of the housing 40 has an outer surface 101 facing the outside of the case 100 and an inner surface 102 facing the inside of the case 100, and the fixing portion 41 is the fixed portion 41. A part of the fixing portion 41 is formed so as to be located inside the case 100 with respect to the inner surface 102 of the case 100.

The nut holding portion 45 extends from the lower surface 42 of the fixing portion 41 along the terminal fitting 50. A nut accommodating portion 46 is formed in the nut holding portion 45. The nut accommodating portion 46 is open downward with the terminal fitting 50. The nut 62 is accommodated in the nut accommodating portion 46. The nut 62 is press-fitted, for example, so that the axis of the nut 62 is perpendicular to the second fastening portion 52 of the terminal fitting 50. The nut 62 is arranged so that the axis of the nut 62 is located near the center of the bolt insertion hole 55 formed in the second fastening portion 52. As shown in FIG. 5, the nut holding portion 45 is formed with a relief portion 47 on the side opposite to the terminal fitting 50 with respect to the nut accommodating portion 46. The relief portion 47 is provided to release the tip portion of the fastening bolt that penetrates the nut 62 housed in the nut housing portion 46.

(effect)
Next, the action and effect of this embodiment will be described.

(1) The terminal block 10 of the present disclosure includes a metal plate 20 and a plurality of terminal units 31 to 33 held by the plate 20, and the plate 20 has a first surface and a first surface facing opposite sides. It has two surfaces (for example, upper surface 21 and lower surface 22) and a plurality of openings 23 to 25 penetrating the plate 20 from the first surface to the second surface and fixing the plurality of terminal units 31 to 33, respectively. Each of the terminal units 31 to 33 of the plate 20 penetrates the opening 23 to 25 of the plate 20 by the resin housing 40 fixed to the corresponding one of the openings 23 to 25 of the plate 20 and the housing 40. It has a terminal metal fitting 50 held in a state, and a plurality of terminal units 31 to 33 are separated from each other and integrated via a plate 20.

According to this configuration, a plurality of terminal units 31 to 33 having a resin housing 40 and a terminal fitting 50 held by the housing 40 are insert-molded into a metal plate 20 to form a resin housing. About 40 It is possible to suppress the inward tilt of the terminal metal fitting 50 due to shrinkage deformation after molding, and it is possible to improve the positional accuracy of the terminal metal fitting 50.

The housing 40 is integrally molded with the terminal fitting 50 and the plate 20 by, for example, insert molding. Therefore, for example, with respect to a mold for forming a terminal block having a different shape of the plate 20, the portion of the mold for forming the housing 40 can be shared. Therefore, by changing only the portion related to the plate 20, for example, a terminal block corresponding to a case having a different mounting position can be formed.

(2) The plurality of terminal units 31 to 33 are inserted into the plurality of through holes 111 to 113 formed in the case to which the terminal block 10 is attached, and the housings 40 of the plurality of terminal units 31 to 33 are A sealing element that can be a sealing material 65 for sealing between the inner peripheral surfaces of the through holes 111 to 113 is fixed to the outer peripheral surface on the case side. Therefore, since the inward tilt of the terminal fitting 50 is suppressed, the inclination of the housing 40 holding each terminal fitting 50 is suppressed, and the terminal units 31 to 33 can be easily inserted into the through holes 111 to 113 of the case to which the terminal block 10 is attached. By inserting it, the sealing property between the housing 40 of the terminal units 31 to 33 and the through holes 111 to 113 of the case can be ensured.

(3) In the plurality of terminal fittings 50, an insertion hole through which a fastening bolt can be inserted is formed at the first end portion arranged inside the case, and the plurality of housings 40 are nuts into which the fastening bolt is screwed. To hold. Therefore, since the nut is held in the housing 40, the conductive member inside the case can be easily fastened to each terminal fitting 50 by screwing the fastening bolt into the nut without preparing a separate nut.

(4) In the plurality of terminal fittings 50, an insertion hole into which a fastening bolt can be inserted is formed at a second end portion arranged on the outside of the case, and a nut into which the fastening bolt is screwed is fixed. There is. Therefore, since the nut for fastening the conductive member outside the case to the terminal fitting 50 is fixed to the terminal fitting 50, the housing 40 of the terminal units 31 to 33 can be miniaturized, and the housing 40 can be shrunk and deformed after molding. Can be suppressed.

(Change example)
This embodiment can be modified and implemented as follows. The present embodiment and the following modified examples can be implemented in combination with each other within a technically consistent range.

-The number of terminal units 31 to 33 may be two or four or more.

For example, as shown in FIGS. 1, 2, 4, and 5, the upper surface 21 and / or the lower surface 22 of the plate 20 of the embodiment can be configured as a flat surface.

For example, as shown in FIG. 5, the housing 40 of the embodiment may fill the gap between the opening 23 of the plate 20 and the terminal fitting 50, and the plate 20 may be filled in or near the opening edge of the opening 23. It can be configured as a synthetic resin mold that adheres to both sides 21 and 22 of the above.

The plate 20 of the embodiment may be referred to as a base plate of the terminal block 10. The lower surface 22 of the plate 20 may be referred to as a base surface supported by a case 100 that fixedly supports the terminal block 10. The openings 23, 24, and 25 of the plate 20 of the embodiment may be referred to as terminal fitting positioning holes for positioning the terminal fitting 50 on the plate 20.

This disclosure includes the following implementation examples. Reference symbols have been added to some of the components of the exemplary embodiments, not for limitation, but as an aid to understanding. Some of the items described in the following implementation examples may be omitted, or some of the items described in the implementation examples may be selected or extracted and combined.

A terminal block (10) according to some aspects of the present disclosure includes a base plate (20) including a plurality of terminal fitting positioning holes (23, 24, 25) and the plurality of terminal fitting positioning holes of the base plate (20). A plurality of terminal fittings (50) having a length penetrating (23, 24, 25) and each of the plurality of terminal fittings (50) extend orthogonally to the base plate (20). A plurality of housings (40) configured to dynamically position the plurality of terminal fittings (50) in the plurality of terminal fitting positioning holes (23, 24, 25) of the base plate (20). Good to be prepared
Each housing (40) fills a gap between each terminal fitting positioning hole (23, 24, 25) and each terminal fitting (50), and each terminal fitting positioning hole (23, 24, 25). It may be a synthetic resin mold that adheres to both sides (21, 22) of the base plate (20) at the opening edge and its vicinity.

-In some mounting examples, the plurality of terminal fitting positioning holes (23, 24, 25) may penetrate the base plate (20) at a plurality of discrete positions of the base plate (20).

In some mounting examples, one of the two sides (21, 22) of the base plate (20) is a base surface (100) supported by a case (100) that fixedly supports the terminal block (10). 22), and the other may be an outward surface (21) opposite to the base surface (22).

-In some mounting examples, the base surface (22) and / or the outward surface (21) of the base plate (20) may be a flat surface.

-In some mounting examples, one terminal fitting (50) and one housing (40) are integrated so that the terminal fitting (50) cannot be removed from the housing (40). May be formed.

In some mounting examples, the housing (40) of each terminal unit (33) is in close contact with the base plate (20) so that the terminal unit (33) is not removable from the base plate (20). You can.

-In some mounting examples, each terminal fitting (50) has one or more intermediate bent portions (53) between both ends (51, 52) in the length direction and the both ends (51, 52). May have.

-In some mounting examples, in each housing (40), the one or more intermediate bending portions (53) of each terminal fitting (50) are embedded inside each housing (40), and each terminal fitting (50). Both ends (51, 52) of 50) may be configured to be exposed from each housing (40).

-In some mounting examples, each terminal fitting (50) may be a flat plate bar, and the one or more intermediate bending portions (53) may include an out-of-plane bending portion.

・ It should be considered that the embodiment disclosed this time is an example in all respects and is not restrictive. The scope of the present invention is indicated by the scope of claims, not the above-mentioned meaning, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

10 Terminal block 20 Plate 21 Upper surface 22 Lower surface 23 to 25 Openings 26, 27 Fixing holes 31 to 33 Terminal unit 40 Housing 41 Fixing part 42 Lower surface 43 Sealing material Adhesive part 45 Nut holding part 46 Nut accommodating part 47 Relief part 50 terminals Metal fitting 51 1st fastening part (2nd end part)
52 Second fastening part (first end part)
53 Buried part 54 Bolt insertion hole 55 Bolt insertion hole 62 Nut 65 Sealing material 100 Case 101 Outer surface 102 Inner surface 111 to 113 Through hole

Claims (4)

With a metal plate
A plurality of terminal units held on the plate and
With
The plate has a first surface and a second surface facing opposite sides, and a plurality of openings that penetrate the plate from the first surface to the second surface and to which the plurality of terminal units are fixed. death,
Each of the plurality of terminal units has a resin housing fixed to one of the openings of the plate and terminals held by the housing so as to penetrate the opening of the plate. With metal fittings,
The plurality of terminal units are separated from each other and integrated via the plate.
Terminal block. The plurality of terminal units are each inserted into a plurality of through holes formed in a case to which the terminal block is attached.
In the housing of each terminal unit, a sealing element for sealing with the inner peripheral surface of the through hole is fixed to the outer peripheral surface on the case side.
The terminal block according to claim 1. In each terminal fitting, an insertion hole through which a fastening bolt can be inserted is formed at a first end portion arranged inside the case.
Each housing holds a nut into which the fastening bolt is screwed.
The terminal block according to claim 2. In each terminal fitting, a bolt insertion hole into which a fastening bolt can be inserted is formed at a second end portion arranged on the outside of the case.
The terminal block according to claim 2 or 3.

Images