CN114287086B

CN114287086B - Terminal block

Info

Publication number: CN114287086B
Application number: CN202080060762.4A
Authority: CN
Inventors: 酒井有; 清水瑛史
Original assignee: Meidensha Corp
Current assignee: Meidensha Corp
Priority date: 2019-09-04
Filing date: 2020-06-30
Publication date: 2023-01-17
Anticipated expiration: 2040-06-30
Also published as: JP6787458B1; JP2021039898A; CN114287086A; WO2021044714A1

Abstract

The invention provides a terminal block, which can inhibit cost increase caused by processing a terminal with high precision and can inhibit the terminal from falling off from a pedestal (30). A terminal block (1) is provided with a conductive terminal and a base (30) for maintaining the insulation of the terminal, the base (30) is provided with a mounting surface for mounting the terminal, wherein the base (30) is provided with: an opposing surface (43V) that faces the mounting surface with a first terminal portion (3V) of a terminal provided on the mounting surface interposed therebetween; and a first pressing protrusion (44V) and a second pressing protrusion (45V) that protrude from the facing surface (43V) and press the first terminal portion (3V) toward the installation surface along the terminal thickness direction.

Description

Terminal block

Technical Field

The present invention relates to a terminal block.

Background

Conventionally, as a terminal block for electrically connecting a plurality of devices, apparatuses, and the like to each other, there has been known a terminal block including a conductive terminal and a base for maintaining insulation of the terminal, and the base includes a mounting surface on which the terminal is provided.

For example, a terminal block described in patent document 1 includes a conductive terminal and a terminal block serving as an insulating base. The terminal block includes an upper surface as a mounting surface and a side surface descending from the upper surface. The terminal is provided on the upper surface of the terminal block in a posture in which the tip portion protrudes sideward from the side surface of the terminal block. Two protrusions are provided on the side surface of the terminal block. The two projecting portions are respectively portions projecting upward from the upper surface of the terminal block, and sandwich the tip end portions of the terminals in the terminal width direction. By this sandwiching, the terminals are held by the terminal block.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2017-50136

Disclosure of Invention

Problems to be solved by the invention

The terminal block described in patent document 1 is an external insertion type terminal block in which a terminal is mounted on a base (terminal block). The terminal block of the plug-in type is generally shipped without firmly fixing the terminal to the base. This is for the following reason. That is, at the delivery destination of the terminal block, an operation of fixing the terminal of the terminal block and the cable terminal extending from the device or the like to the base in a superposed state by bolt fastening or the like is performed, and at this time, the terminal is finally fixed to the base. When the terminal of the terminal block delivered to the delivery destination is firmly fixed to the base by bolt fastening or the like, before the above-described operation, an expensive preparatory operation such as loosening the fastening of the firmly fastened bolt and removing the bolt occurs. Therefore, the terminal block is generally shipped without attaching a fixing member such as a bolt to the base or temporarily attached to the base for easy removal of the fixing member.

In this terminal block, there is a possibility that the terminal may be detached from the base by vibration or the like during transportation to a delivery destination. In order to suppress the detachment, a force for restraining the terminal to the installation surface needs to be positively applied to the terminal by some means.

In the terminal block described in patent document 1, the distance D between the two protrusions of the terminal is set ₁ Is smaller than the width W of the terminal and has interference (W-D) ₁ ) The terminal can be prevented from falling off the holder by allowing the two protrusions to exhibit a desired value of sandwiching force.

However, if the interference is less than the predetermined minimum value, the desired sandwiching force cannot be exerted on the two protrusions, while if the interference exceeds the predetermined maximum value, the two protrusions are damaged. Therefore, the interference needs to be converged to a predetermined tolerance (tolerance), and therefore, the terminal made of metal needs to be processed with high precision, and the problem of high cost is presented.

The present invention has been made in view of the above-described background, and an object of the present invention is to provide a terminal block capable of suppressing an increase in cost due to high-precision processing of a terminal and suppressing the occurrence of terminal separation from a block.

Means for solving the problems

A terminal block according to the present invention includes a conductive terminal and a base holding an insulation property of the terminal, the base including a mounting surface on which the terminal is mounted, the base including: a table portion provided with the installation surface; a plurality of partitions that rise from the installation surface and that separate an installation area of one of the terminals from other areas in a terminal width direction on the installation surface; a wall portion that rises from the installation surface in a region on one side and a region on the other side, out of the regions on the one side and the regions on the other side in the extending direction of the partition walls, and extends along the arrangement direction of the plurality of partition walls; and a slit that penetrates the wall portion in the extending direction and extends in the arrangement direction, one of a plurality of surfaces that surround the slit being configured by a partial region of the installation surface, the base being provided with a first pressing protrusion and a second pressing protrusion that protrude from an opposing surface of the plurality of surfaces that surround the slit, the opposing surface facing the installation surface with the terminal provided on the installation surface interposed therebetween, and that press the terminal toward the installation surface in a terminal thickness direction, the terminal being provided with a first protruding portion and a second protruding portion only at an end portion on the other side of an end portion on one side and an end portion on the other side in the extending direction, the first protruding portion protruding from a side surface on one side in the arrangement direction toward one side, the second protruding portion protruding from a side surface on the other side in the arrangement direction toward the other side in the arrangement direction, the terminal being provided on the installation surface through the slit, the first pressing protrusion pressing the first protruding portion of the terminal provided on the installation surface, and the second pressing protrusion provided on the installation surface.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the present invention, the following excellent effects are obtained: the terminal can be prevented from dropping off from the base while suppressing an increase in cost due to the terminal being processed with high precision.

Drawings

Fig. 1 is a perspective view showing a terminal block according to an embodiment.

Fig. 2 is a perspective view showing the terminal block from a different angle from fig. 1.

Fig. 3 is a perspective view showing a base in a state where each terminal is removed together with each terminal.

Fig. 4 is a view showing the pedestal in a planar manner from the other side in the extending direction of the partition wall.

Fig. 5 is an enlarged view of the center portion in the arrangement direction of the pedestals shown in fig. 4.

Fig. 6 is a cross-sectional view showing a central portion in the arrangement direction in a cross section of the terminal block taken at a position of a one-dot chain line in fig. 1.

Fig. 7 is a plan view of the terminal block from the terminal side in the thickness direction of the terminal.

Fig. 8 is a perspective view showing the terminal block in the process of performing an operation of arranging the terminal with respect to the base.

Fig. 9 is a cross-sectional view showing the terminal block in a state of being cut at a cut surface extending in the arrangement direction and the partition extending direction.

Detailed Description

Hereinafter, an embodiment of a terminal block to which the present invention is applied will be described with reference to the drawings. In the drawings, the reference numerals with a symbol "U" at the end thereof, and the like are provided for the U phase in the three-phase power supply. Note that a component or the like denoted by a reference numeral with a symbol such as "V" at the end is provided for the V phase in the three-phase power supply. Note that, for example, a component denoted with a reference numeral with a symbol "W" at the end thereof is provided for the W phase in the three-phase power supply. In the drawings, the U-phase components and the like, the V-phase components and the like, and the W-phase components and the like are shown in a predetermined order, but the order of arrangement is not limited to the order shown in the drawings.

The arrow X shown in each figure is a direction along the arrangement direction of the partition walls (33 a to f) described later. The arrow Y shown in each figure is a direction along the extending direction of the partition walls (33 a to f) described later. The arrow Z shown in each figure is a direction along the thickness direction of the terminals (2U, 2V, 2W) described later. The arrow X direction and the arrow Y direction are orthogonal to each other. The arrow Z direction is orthogonal to both the arrow X direction and the arrow Y direction.

Fig. 1 is a perspective view showing a terminal block 1 according to the embodiment. Fig. 2 is a perspective view showing the terminal block 1 from a different angle from fig. 1. In fig. 1 and 2, terminal block 1 includes terminal 2U, terminal 2V, terminal 2W, and base 30. Each of the

terminals

2U, 2V, and 2W is made of a copper alloy and has conductivity. In addition, the first and second substrates are, the base 30 is made of an insulating resin.

Fig. 3 is a perspective view showing the base 30 with the terminals (2U, 2V, 2W) removed, together with the terminals. As shown in fig. 3, the pedestal 30 includes: a table portion 31 having a mounting surface 32 on which terminals (2U, 2V, 2W) are mounted; and a wall portion 40 rising from the installation surface 32.

The base 30 includes a first partition 33a, a second partition 33b, a third partition 33c, a fourth partition 33d, a fifth partition 33e, and a sixth partition 33f which are arranged in a predetermined arrangement direction (arrow X direction) in a state of protruding from the installation surface 32. The first partition 33a protrudes in the terminal thickness direction (arrow Z direction) from an end portion on one side (+ side) in the arrangement direction (arrow X direction) of the mounting surface 32. The sixth partition 33f protrudes in the terminal thickness direction (arrow Z direction) from the end on the other side (-side) in the arrangement direction (arrow X direction) of the mounting surface 32.

The first partition wall 33a and the second partition wall 33b are walls that separate the installation region 32U of the terminal 2U from other regions in the arrangement direction (arrow X direction) over the entire installation surface 32. The third partition wall 33c and the fourth partition wall 33d are walls that separate the installation region 32V of the terminal 2V from other regions in the arrangement direction (arrow X direction) over the entire installation surface 32. The fifth partition wall 33e and the sixth partition wall 33f are walls that separate the installation region 32W of the terminal 2W from other regions in the arrangement direction (the arrow X direction) in the entire installation surface 32.

Hereinafter, the first partition wall 33a, the second partition wall 33b, the third partition wall 33c, the fourth partition wall 33d, the fifth partition wall 33e, and the sixth partition wall 33f are collectively referred to as partition walls 33a to f. The extending direction of the partition walls 33a to f is referred to as the partition wall extending direction.

A nut 34U is embedded in an end portion on one side (+ side) in the partition wall extending direction (arrow Y direction) in the installation region 32U of the installation surface 32. In addition, a nut 34V is embedded in an end portion on one side (+ side) in a partition extending direction (arrow Y direction) in an installation region 32V of the installation surface 32. A nut 34W is embedded in an end portion of the installation region 32W of the installation surface 32 on one side (+ side) in the partition extending direction (arrow Y direction). The screw holes of each of the nut 34U, the nut 34V, and the nut 34W are examples of holes provided on the installation surface of the base of the terminal block of the present invention. Bolts fastened to the nuts 34U, 34V, and 34W are examples of fasteners inserted into the holes.

Each of the

terminals

2U, 2V, and 2W is formed by bending one end side in the longitudinal direction of a rectangular metal piece obtained by punching a metal plate made of a copper alloy at an angle of about 90 ° [ ]. The terminal 2U includes a first terminal portion 3U and a second terminal portion 4U extending at an angle of about 90 ° [ ]withrespect to the extending direction of the first terminal portion 3U. The

terminals

2V and 2W also include first terminal portions (3V and 3W) and second terminal portions (4V and 4W) similar to the terminal 2U.

The first terminal portion 3U of the terminal 2U includes a through-hole 3Uc for passing a bolt therethrough at one (+ side) end portion in the partition wall extending direction (arrow Y direction). The first terminal portion 3V of the terminal 2V and the first terminal portion 3W of the terminal 2W also include the through-hole 3Vc and the through-hole 3Wc similar to the terminal 2U.

The second terminal portion 4U of the terminal 2U includes a through hole 4Uc for passing a bolt therethrough. The second terminal portion 4V of the terminal 2V and the second terminal portion 4W of the terminal 2W also have the through-hole 4Vc and the through-hole 4Wc similar to the terminal 2U.

In fig. 1, a U-phase cable terminal extending from a device on the power output side such as a motor overlaps with the first terminal portion 3U of the terminal 2U. Then, the cable terminal and the terminal 2U are fixed to the base 30 by screwing a bolt inserted through the through-hole of the cable terminal and the through-hole (3 Uc in fig. 3) of the first terminal portion 3U into a screw hole of the nut 34U. Terminal 2V and terminal 2W are also fixed to base 30 in the same manner as terminal 2U.

In fig. 2, a U-phase cable terminal extending from a device on the power input side such as an inverter overlaps with the second terminal portion 4U of the terminal 2U. Then, the cable terminal is fixed to the base 30 in a state of being in close contact with the second terminal portion 4U by screwing a bolt inserted through the through-hole of the cable terminal and the through-hole (4 Uc in fig. 3) of the second terminal portion 4U into the screw hole of the nut 41U. Similarly, the V-phase and W-phase fix the cable terminal extending from the device on the power input side to the pedestal 30.

Fig. 4 is a view showing the pedestal 30 in a plan view from the other side (-side) in the direction in which the partition wall extends (the direction of arrow Y). The nut 41U, the nut 41V, and the nut 41W are embedded in the wall portion 40 of the base 30 so as to be aligned in the alignment direction (arrow X direction) of the partition walls (33 a to f in fig. 3). In addition, in the wall portion 40 of the pedestal 30, a slit 42U, a slit 42V, and a slit 42W extending in the arrangement direction (the arrow X direction) are provided along the arrangement direction (the arrow X direction). Slit 42U, slit 42V, and slit 42W penetrate wall 40 in the partition extending direction (arrow Y direction).

The installation region 32U of the installation surface (32 in fig. 3) of the table portion 31 constitutes one of the surfaces of the slit 42U surrounding the wall portion 40. The other of the surfaces surrounding the slit 42U is an opposing surface 43U opposing the installation region 32U. In the V-phase and the W-phase, the facing

surfaces

43V and 43W also face the installation region 32V and the installation region 32W that constitute one of the surfaces surrounding the slit 42V and the slit 42W via the slit 42V and the slit 42W.

Fig. 5 is an enlarged view of the center portion of the pedestal 30 shown in fig. 4 in the arrangement direction (the direction of arrow X). Each structure for the V-phase is provided at the center portion in the arrangement direction (arrow X direction) of the pedestal 30. In the slit 42V, the facing surface 43V of the wall portion 40 faces the installation region 32V of the table portion 31 in the Z direction (terminal thickness direction). The facing surface 43V is provided with a first pressing projection 44V and a second pressing projection 45V that project from the facing surface 43V toward the installation region 32V. The base 30 also includes a first pressing protrusion and a second pressing protrusion similar to V for the U-phase and the W-phase, respectively.

Fig. 6 is a cross-sectional view showing a central portion in the arrangement direction (arrow X direction) of the cross section of the terminal block 1 taken at a position indicated by a dashed line in fig. 1. In the slit 42V provided in the wall portion 40 of the base 30, the first pressing projection 44V and the second pressing projection 45V projecting from the facing surface 43V strongly press the first terminal portion 3V toward the installation region 32V along the terminal thickness direction in a state of being in contact with the first terminal portion 3V, respectively. According to the terminal block 1 of the embodiment, the first terminal portion 3V can be strongly restrained on the installation region 32V by the pressing, and the terminal (2V in fig. 3) including the first terminal portion 3V can be prevented from falling off the block 30.

The structures for the V-phase have been described with reference to fig. 5 and 6, but the structures for the U-phase and the W-phase are also the same as those for the V-phase. That is, in the U-phase and the W-phase, the first pressing projections and the second pressing projections protruding from the facing surfaces (43U, 43W) are in contact with the first terminal portions (3U, 3W) in the slits (42U, 42W) provided in the wall portion 40, respectively. The first and second pressing protrusions strongly press the first terminal portions (3U, 3W) toward the installation regions (32U, 32W) in the terminal thickness direction, respectively. Therefore, according to the terminal block 1 of the embodiment, the first terminal portions (3U, 3W) can be strongly restrained in the installation regions (32U, 32W), and the terminals (2U, 2W in fig. 3) including the first terminal portions (3U, 3W) can be prevented from coming off the block 30.

However, in the terminal block described in patent document 1, the distance D between the two protrusions is set to be shorter ₁ When the two protrusions are sandwiched between the terminals so as to be smaller than the width W of the terminals, the two protrusions exert a force on the terminals from both sides in the width direction, thereby restraining the terminals on the mounting surface. On the other hand, in the terminal block 1 of the embodiment, in fig. 6, a force for restraining the terminal (2V of fig. 3) on the installation surface 32V is applied as follows. That is, the combination of the first pressing projection 44V and the installation surface 32V and the combination of the second pressing projection 45V and the installation surface 32V exert forces on the first terminal portion 3V of the terminal (2V) from both sides in the terminal thickness direction (arrow Z direction). That is, the terminal block described in patent document 1 applies force to the terminals from both sides in the width direction, whereas the terminal block 1 of the embodiment is thickerThe terminal (2V) is applied with force at two sides in the direction of the angle, and the two are different in this point.

In the terminal block described in patent document 1, the "width W — the distance D ₁ "is interference, and in contrast, in the terminal block 1 of the embodiment," thickness T — distance D ₂ "is interference magnitude. The width W is the width of the terminal, and the distance D ₁ Is the distance between the two protrusions, thickness T is the thickness of the terminal, and distance D ₂ Is the distance between the pressing protrusion and the installation surface. Interference in the terminal block described in patent document 1 = "width W — distance D ₁ The width W of "is greatly affected by the punching accuracy of the metal plate. In order to keep the punching accuracy constant by limiting the width W within a predetermined dimensional error, it is necessary to strictly manage the machining conditions such as appropriate management of the punching conditions (pressure and the like) and periodic replacement of the punching die, which leads to an increase in cost. On the other hand, generally, a commercially available metal plate is manufactured and managed so as to be shipped within a predetermined dimensional error, and if the dimensional error is the same, it is possible to easily satisfy the requirement that the interference = "thickness T-distance D" in the terminal block 1 of the embodiment ₂ "found tolerance.

Therefore, according to the terminal block 1 of the embodiment, it is possible to suppress an increase in cost due to the high-precision processing of the terminals (2U, 2V, 2W in fig. 3), and to suppress the occurrence of the terminals (2U, 2V, 2W) coming off from the stage 30.

As shown in fig. 1, the wall portion 40 of the pedestal 30 is provided at the end portion on the other side (the arrow Y direction) of the table portion 31 in the partition wall extending direction. As shown in fig. 4, the wall 40 is provided with slits (42U, 42V, 42W) of each phase, and opposing surfaces (43U, 43V, 43W) are present in the slits (42U, 42V, 42W) of each phase. Therefore, in each phase, the facing surfaces (43U, 43V, 43W) face only the area on one side (+ side) and the area on the other side (-side) in the direction in which the partition walls extend (the direction of arrow Y) in the installation area (32U, 32V, 32W).

In this configuration, in the region on one side (+ side) in the extending direction (arrow Y direction) of the partition walls in the installation region (32U, 32V, 32W), a top plate or the like for forming an opposing surface is not provided. Therefore, when the cable terminal on the power output side is provided in the region on one side (+ side) in the direction (arrow Y direction) in which the partition wall of the first terminal portion (3U, 3V, 3W) extends, it is possible to avoid the obstruction of the installation work by the top plate or the like.

As shown in fig. 3, the first terminal portion 3U of the terminal 2U includes a first protruding portion 3Ua and a second protruding portion 3Ub. The first projecting portion 3Ua projects from a side face on one side (+ side) in the terminal width direction (arrow X direction) toward one side (+ side). In addition, the second projecting portion 3Ub projects from the side surface on the other side (-side) in the terminal width direction (arrow X direction) toward the other side (-side). The first projecting portion 3Ua and the second projecting portion 3Ub are both provided at the other side (on the side) of the first terminal portion 3U in the partition wall extending direction (arrow Y direction). The first terminal portion 3V of the terminal 2V also includes the first protruding portion 3Va and the second protruding portion 3Vb similar to the first terminal portion 3U of the terminal 2U. The first terminal portion 3W of the terminal 2W also includes the first protruding portion 3Wa and the second protruding portion 3Wb similar to the first terminal portion 3U of the terminal 2U.

As shown in fig. 6, the first protruding portion 3Va of the first terminal portion 3V is pressed toward the installation region 32V by the first pressing projection 44V described above. The second protruding portion 3Vb of the first terminal portion 3V is pressed toward the installation region 32V by the second pressing projection 45V. In the respective configurations for U-phase and W-phase, the first protruding portions (3 Ua, 3 Wa) are pressed toward the installation regions (32U, 32W) by the first pressing protrusions (44U, 44V), similarly to the respective configurations for V-phase. The second protrusions (3 Ub, 3 Wb) are pressed by the second pressing protrusions (45U, 45W) toward the installation regions (32U, 32W). In this configuration, the first terminal portions (3U, 3V, 3W) can be pressed with good balance in the width direction.

Fig. 7 is a view showing the terminal block 1 in a planar manner from the terminal side in the terminal thickness direction (Z direction). The first terminal portion 3U of the terminal 2U is disposed between the first partition wall 33a and the second partition wall 33b of the base 30 in the arrangement direction (arrow X direction) of the partition walls 33a to f. The first partition wall 33a and the second partition wall 33b each include a regulating portion 33a1 and a regulating portion 33b1 that regulate movement of the first terminal portions 3U arranged therebetween in the arrangement direction (the direction of arrow X). The regulating portion 33a1 of the first partition wall 33a protrudes toward the second partition wall 33b from the facing surface of the first partition wall 33a facing the second partition wall 33 b. The regulating portion 33b1 of the second partition wall 33b projects toward the first partition wall 33a from the surface of the second partition wall 33b facing the first partition wall 33 a.

Although the first partition wall 33a and the second partition wall 33b have been described, as shown in fig. 7, the third partition wall 33c, the fourth partition wall 33d, the fifth partition wall 33e, and the sixth partition wall 33f also include the restriction portion 33c1, the restriction portion 33d1, the restriction portion 33e1, and the restriction portion 33f1, which are similar to the first partition wall 33 a.

In this configuration, when the first terminal portions (3U, 3V, 3W) of the terminals (2U, 2V, 2W) are fixed to the installation region (32U, 32V, 32W in fig. 3) together with the cable terminal by fastening with a bolt or the like, it is possible to avoid the occurrence of distortion of the terminals due to the fastening.

Fig. 8 is a perspective view showing the terminal block 1 in the process of performing the operation of arranging the terminals 2U with respect to the base 30. In fig. 8, a middle stage process in the setting operation is shown. In an initial step of the setting operation, the tip of the first terminal portion 3U of the terminal 2U is inserted into the slit (42U in fig. 4) of the wall portion 40 from the other side (-side) in the direction in which the partition extends (the direction of arrow Y). In the middle stage of the setting operation, as shown by arrow a in fig. 8, the first terminal portion 3U having passed through the slit (42U) is slid on the setting surface 32U from the other side (-side) toward the one side (+ side) in the partition extending direction (arrow Y direction). In this middle stage, as shown in fig. 8, the first projecting portion 3Ua of the first terminal portion 3U does not reach the slit (42U). In fig. 8, the second protrusion (3 Ub in fig. 3) of the first terminal portion 3U does not reach the slit (42U), although the second protrusion is not shown as a dead angle. When the latter process in the setting operation is reached, the first projecting portion 3Ua of the moving first terminal portion 3U starts to rub against the first pressing projection (44U of fig. 6) in the slit (42U) to generate extremely small abrasive dust of the first pressing projection. At the same time, the second protrusion (3 Ub) of the moving first terminal portion 3U starts to rub against the second pressing projection (45U of fig. 6) within the slit (42U) to generate extremely small swarf of the second pressing projection.

In the U phase, the first pressing protrusion (44U) and the second pressing protrusion may not be providedThe second pressing protrusions (45U) restrain the first terminal part (3U) on the setting region (32U) as described below. Specifically, the first terminal section (3U) is sandwiched between the restriction section (33 a 1) and the restriction section (33 b 1) and is constrained in the installation region (32U). However, in this structure, the interference is "width W — distance between restricting portions D ₃ Therefore, the terminal 2U needs to be punched with high accuracy, which causes an increase in cost. Further, as shown in fig. 8, from the middle stage of the setting operation, the friction restricting portion 33b1 is started by the first terminal portion 3U being moved. Although not shown in fig. 8, the first terminal portion 3U that is moved also starts to rub against the regulating portion (33 a 1) of the first partition wall 33 a. Therefore, compared to the terminal block 1 of the first embodiment, more abrasion dust is generated than when the terminal 2U is provided on the base 30. In other words, in the terminal block 1 of the first embodiment, the generation of the abrasion dust of the base 30 (the first pressing projection and the second pressing projection) can be reduced as compared with the structure in which the first terminal portion 3U is restrained on the installation surface 32U by the restraining portion 33b1 and the restraining portion (33 a 1). The grinding dust may have an adverse effect (e.g., an electrical short circuit or a rotation restriction of the shaft) on an apparatus (or device) such as a motor, on which the terminal block 1 is mounted. Therefore, by reducing the generation of the abrasive dust, the generation of electrical or mechanical troubles of the equipment (or the device) caused by the abrasive dust is reduced.

Therefore, according to the terminal block 1 of the embodiment, it is possible to reduce the occurrence of electrical or mechanical problems in the device (or apparatus) on which the terminal block 1 is mounted, as compared with the structure in which the first terminal portion 3U is restrained on the installation surface 32U by the restraining portion 33b1 and the restraining portion (33 a 1).

The structures for the V-phase and the W-phase are also the same as those for the U-phase. That is, compared to the case where the first terminal portions (3V, 3W) are constrained to the installation surfaces (32V, 32W) by the constraining portions (33 c1, 33d1, 33e1, 33f 1), the occurrence of electrical or mechanical defects in the device (or apparatus) can be reduced.

Fig. 9 is a cross-sectional view showing the terminal block 1 in a state of being cut at a cut surface extending in the arrangement direction (arrow X direction) and the partition extending direction (arrow Y direction). The base 30 includes, for each phase, first abutting walls (33 a2, 33c2, 33e 2) that abut against one side (+ side) end portions of the first protruding portions (3 Ua, 3Va, 3 Wa) of the first terminal portions (3U, 3V, 3W) in the partition wall extending direction (arrow Y direction). The base 30 includes second abutment walls (33 b2, 33d2, 33f 2) that abut against one side (+ side) end portions of the second protruding portions (3 Ub, 3Vb, 3 Wb) of the first terminal portions (3U, 3V, 3W) in the partition wall extending direction (arrow Y direction).

In this configuration, the following operation can be performed by bringing the first abutment walls (33 a2, 33c2, 33e 2) into abutment with the first protruding portions (3 Ua, 3Va, 3 Wa) and the second protruding portions (3 Ub, 3Vb, 3 Wb) into abutment with the second abutment walls (33 b2, 33d2, 33f 2). That is, the terminals (2U, 2V, 2W) can be positioned in the partition extending direction (arrow Y direction).

The present invention is not limited to the above-described embodiments, and a configuration different from the embodiments may be adopted within a range where the configuration of the present invention can be applied. The present invention exhibits specific operational effects in each of the embodiments described below.

[ first mode ]

A first aspect is a terminal block (for example, a terminal block 1) including a conductive terminal (for example, a terminal 2U, a terminal 2V, or a terminal 2W) and a base (for example, a base 30) that holds an insulating property of the terminal, the base including an installation surface (for example, 32) on which the terminal is installed, the base including: an opposing surface (e.g., opposing surface 43U, opposing surface 43V, opposing surface 43W) opposing the mounting surface with the terminal provided on the mounting surface interposed therebetween; and a pressing projection projecting from the facing surface and pressing the terminal toward the mounting surface along a terminal thickness direction.

According to this configuration, as described in the embodiment, it is possible to suppress an increase in cost due to the terminal being processed with high accuracy, and it is possible to suppress the terminal from coming off the stage.

[ second mode ]

A second aspect includes the structure of the first aspect, wherein the base includes a plurality of partition walls (e.g., a first partition wall 33a, a second partition wall 33b, a third partition wall 33c, a fourth partition wall 33d, a fifth partition wall 33e, and a sixth partition wall 33 f) arranged in a predetermined arrangement direction (e.g., an arrow Y direction) in a state of protruding from the installation surface, the terminal includes through holes (e.g., a through hole 3Uc, a through hole 3Vc, and a through hole 3 Wc) in a region on one side (e.g., a + side in the arrow Y direction) in a terminal longitudinal direction, and is provided on the installation surface in a posture in which the terminal width direction is along the arrangement direction, the plurality of partition walls are walls for partitioning an installation region (e.g., an installation region 32U, an installation region 32V, and an installation region 32W) of one of the terminal from other regions in the installation surface in the arrangement direction, the region on one side (e.g., the + side) in the installation surface in the extension direction of the partition walls includes holes (e.g., a nut 34U, a nut 34V, a nut 34W), and the fastener is provided in a region on one side in the installation surface and the installation surface (e.g., the bolt insertion direction of the other side) and the installation surface.

According to this configuration, when the cable terminal on the power output side is provided in the region on one side in the direction in which the partition wall of the first terminal portion extends, it is possible to avoid the installation work being hindered by a ceiling plate or the like for forming the facing surface.

[ third mode ]

The third aspect includes the structure of the second aspect, wherein the terminal includes, as the pressing protrusions, first protruding portions (e.g., first protruding portions 3Ua, first protruding portions 3Va, and first protruding portions 3 Wa) protruding from a side surface of one side (e.g., a + side in an arrow X direction) in the terminal width direction toward the one side, and second protruding portions (e.g., second protruding portions 3Ub, second protruding portions 3Vb, and second protruding portions 3 Wb) protruding from a side surface of the other side (e.g., a-side in the arrow X direction) in the terminal width direction toward the other side, and the base includes first pressing protrusions (e.g., first pressing protrusions 44U, first pressing protrusions 44V, and first pressing protrusions 44W) pressing the first protruding portions of the terminal toward the installation surface, and second pressing protrusions (e.g., second pressing protrusions 45U, second pressing protrusions 45V, and second pressing protrusions 45W) pressing the second protruding portions of the terminal toward the installation surface.

According to this structure, the terminal can be pressed with good balance in the terminal width direction. Further, according to the third aspect, compared to a configuration in which the terminal is restrained on the installation surface by the restraining portion provided on the partition wall, it is possible to reduce the occurrence of electrical or mechanical defects in the device (or apparatus) on which the terminal block is mounted.

[ fourth mode ]

The fourth aspect has the structure of the third aspect, and the pedestal has a first abutting wall (for example, a first abutting wall 33a2, a first abutting wall 33c2, and a first abutting wall 33e 2) that abuts against one end of the first protruding portion in the extending direction, and a second abutting wall (for example, a second abutting wall 33b2, a second abutting wall 33d2, and a second abutting wall 33f 2) that abuts against one end of the second protruding portion.

According to this structure, the terminal can be positioned in the partition extending direction by the first abutting wall and the second abutting wall.

[ fifth mode ]

A fifth aspect includes the configuration of the fourth aspect, and each of the two partition walls facing each other in the arrangement direction includes a regulating portion (for example, a regulating portion 33a1, a regulating portion 33b1, a regulating portion 33c1, a regulating portion 33d1, a regulating portion 33e1, and a regulating portion 33f 1) that regulates movement of the terminals provided therebetween in the arrangement direction.

According to this configuration, when the terminal is fixed to the installation area together with the cable terminal by fastening with a bolt or the like, it is possible to avoid the terminal from being distorted due to the fastening.

The present application claims priority based on japanese patent application No. 2019-160943, which is a japanese patent application filed on 9/4/2019, and the entire contents of the disclosure of the japanese patent application are cited.

Industrial applicability

The present invention can be applied to a motor, a device, and the like having a function of fixing a cable terminal.

Description of the reference numerals

1: terminal block, 2U, 2V, 2W: terminal, 3U, 3V, 3W: first terminal portion, 3Ua, 3Va, 3Wa: first protrusion, 3Ub, 3Vb, 3Wb: second protrusion, 3Uc, 3Vc, 3Wc: through hole, 4U, 4V, 4W: second terminal portion, 30: pedestal, 32: mounting surface, 32U, 32V, 32W: setting region, 33a: first partition (partition), 33b: second partition (partition), 33c: third partition (partition), 33d: fourth partition (partition), 33e: fifth partition (partition), 33f: sixth partition (partition), 33a1, 33b1, 33c1, 33d1, 33e1, 33f1: restricting portions, 33a2, 33c2, 33e2: first abutment wall, 33b1, 33d1, 33f1: second abutment wall, 34U, 34V, 34W: nut, 43U, 43V, 43W: facing surface, 44U, 44V, 44W: first pressing projection, 45U, 45V, 45W: second pressing protrusion, X: alignment direction, Y: partition wall extending direction, Z: the thickness direction of the terminal.

Claims

1. A terminal block comprising a conductive terminal and a base for holding the terminal and having an installation surface on which the terminal is installed, wherein,

the pedestal is provided with:

a table portion provided with the installation surface;

a plurality of partitions that rise from the installation surface and that separate an installation area of one of the terminals from other areas in a terminal width direction on the installation surface;

a wall portion that rises from the installation surface in a region on one side and a region on the other side, out of the regions on the one side and the regions on the other side in the extending direction of the partition walls, and extends along the arrangement direction of the plurality of partition walls; and

a slit that penetrates the wall portion in the direction in which the partition walls extend, and that extends along the direction in which the partition walls are arranged,

one of the surfaces surrounding the slit is formed of a partial region of the installation surface,

the base includes a first pressing protrusion and a second pressing protrusion that protrude from an opposing surface of a plurality of surfaces surrounding the slit, the opposing surface opposing the installation surface with the terminal provided on the installation surface interposed therebetween, and press the terminal toward the installation surface in a terminal thickness direction,

the terminal includes a first protruding portion and a second protruding portion only at an end portion on the other side of one end portion and the other end portion in the extending direction of the partition walls, the first protruding portion protruding from a side surface on one side in the arrangement direction of the partition walls toward one side, the second protruding portion protruding from a side surface on the other side in the arrangement direction of the partition walls toward the other side,

and the terminal is provided on the mounting surface through the slit from the other side toward the one side in the extending direction of the partition wall,

the first pressing projection presses the first projecting portion of the terminal provided on the mounting surface,

the second pressing projection presses the second protruding portion of the terminal provided on the installation surface.

2. The terminal block of claim 1,

the terminal is provided with a through-hole in one region in the terminal longitudinal direction and is provided on the mounting surface in a posture in which the terminal width direction is along the arrangement direction of the partition walls,

the installation surface is provided with a hole in a region on one side in the extending direction of the partition wall,

the hole is used for inserting a fixing piece, and the fixing piece penetrates through the through hole of the terminal arranged on the setting surface.

3. The terminal block of claim 1 or 2,

the terminal is provided with:

a first terminal portion on one side of a bent portion formed by bending; and

a second terminal portion on the other side,

the first terminal portion is disposed on the installation surface,

the second terminal portion is provided to the wall portion.

4. The terminal block of claim 3,

the pedestal includes a first abutting wall abutting against an end portion on one side of the first protruding portion in an extending direction of the partition wall, and a second abutting wall abutting against an end portion on one side of the second protruding portion.

5. The terminal block of claim 4,

the two partition walls facing each other in the arrangement direction of the partition walls each include a regulating portion that protrudes from a facing surface facing the other partition wall and regulates movement of the terminal provided therebetween in the arrangement direction of the partition walls.