Terminal strip

Abstract

To provide a terminal strip capable of suppressing a water stop member from being covered with water.SOLUTION: A housing 40 as a resin molded part has a hood part and a fitting part constituting a cylindrical part, and an extension part 47 extending from the hood part to the outer peripheral side. The fitting portion, which forms a part of the tubular portion of the housing 40, is fitted to the opening 101. The water stop member is arranged between the outer peripheral surface of the fitting part and the inner peripheral surface of the opening 101 to stop water between them. The extending portion 47 is provided over the entire periphery of the receptacle constituting the tubular portion. In a state where the fitting portion is fitted into the opening 101, the extending portion 47 has an outer dimension larger than that of the opening 101 over the entire circumference of the opening 101 when viewed from the opening direction (Z-axis direction) of the opening 101.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present disclosure relates to a terminal block. [Background technology]

[0002] For example, Patent Document 1 describes a terminal block that is attached to an opening in the housing of an equipment. The terminal block includes a resin molded part having a cylindrical main body and terminals extending from the inner peripheral surface of the main body. When the terminal block is attached to the equipment housing, the terminals of the terminal block are connected to terminals on the equipment side. The terminal block also includes a waterproof member interposed between the resin molded part and the surface of the equipment housing. The waterproof member prevents water from entering the opening in the equipment housing. Therefore, the waterproof member prevents water from entering the equipment housing through the opening where the terminal block is attached. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2019 / 230468 Summary of the Invention [Problem to be solved by the invention]

[0004] When the terminal block is used in an environment where it is prone to getting wet, there is a concern that the water blocking member may be exposed to water. If no measures are taken to prevent the water blocking member from getting wet, there is a concern that the water blocking member may deteriorate more quickly due to the water blocking member being exposed to water.

[0005] An object of the present disclosure is to provide a terminal block that can prevent water from entering a waterproofing member. [Means for solving the problem]

[0006] The terminal block of the present disclosure is a terminal block that is attached to an opening provided in a housing of an apparatus, and includes a resin molded part made of resin having a tubular part that fits into the opening and an extending part that extends outward from the tubular part, terminals that protrude from the inner surface of the tubular part toward the inner surface of the tubular part, electric wires connected to the terminals, a water-stopping member that is disposed between the outer surface of the tubular part and the inner surface of the opening and that stops water from flowing between them, and a first shield shell made of metal that covers the extending part, wherein the extending part is provided around the entire circumference of the tubular part, and when viewed from the opening direction of the opening, when the tubular part is fitted into the opening, the extending part has outer dimensions that are larger than the opening around the entire circumference of the opening, and gaps that allow liquid to flow are formed between the first shield shell and the extending part, and between the first shield shell and the housing. [Effects of the Invention]

[0007] The terminal block of the present disclosure exhibits the effect of suppressing water from getting on the waterproofing member. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view showing a terminal block according to an embodiment. [Figure 2A] FIG. 2A is a cross-sectional view showing the terminal block of the same configuration. [Figure 2B] FIG. 2B is an enlarged cross-sectional view showing a part of the terminal block of the same embodiment. [Figure 3] FIG. 3 is an exploded perspective view showing the terminal block of the same configuration. [Figure 4] FIG. 4 is a rear view showing the terminal block of the same configuration. [Figure 5] FIG. 5 is a schematic diagram showing the relationship between the extension and the opening of the housing in the terminal block of the same configuration when viewed from the opening direction of the housing. [Figure 6] FIG. 6 is an exploded perspective view of a second shield shell in the terminal block of the same embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] [Description of the embodiments of the present disclosure] First, embodiments of the present disclosure will be listed and described. The terminal block of the present disclosure comprises: [1] A terminal block to be attached to an opening provided in the housing of an equipment, comprising: a resin molded part made of resin having a tubular part that fits into the opening and an extension part that extends outward from the tubular part; a terminal that protrudes from the inner surface of the tubular part to the inner surface of the tubular part; an electric wire connected to the terminal; a water-stopping member that is arranged between the outer surface of the tubular part and the inner surface of the opening to stop water from flowing between them; and a first shield shell made of metal that covers the extension part, wherein the extension part is provided around the entire circumference of the tubular part, and when the tubular part is fitted into the opening, the extension part has an outer dimension that is larger than the opening around the entire circumference of the opening when viewed from the opening direction of the opening.

[0010] According to this configuration, the water-stopping member is disposed between the outer peripheral surface of the tubular portion and the inner peripheral surface of the opening. This allows the water-stopping member to be disposed in a recessed position within the opening, thereby preventing water from getting into the water-stopping member. Furthermore, the extension portion of the resin molded portion has outer dimensions larger than the opening around the entire periphery when viewed from the opening direction. This allows the extension portion to effectively prevent water from entering the opening. Therefore, the extension portion can further prevent water from getting into the water-stopping member.

[0011] [2] The extension portion is configured to include a terminal holding portion that holds the terminal in a part of the circumferential direction, and the terminal has a terminal connection portion that protrudes from the inner surface of the tubular portion toward the inner side of the tubular portion and an embedded portion that is embedded inside the terminal holding portion, and the electric wire is connected to the embedded portion and is pulled out from the inside of the resin molded portion to the outside.

[0012] According to this configuration, the terminal holding portion that holds the buried portion of the terminal constitutes a part of the extending portion. That is, the extending portion including the terminal holding portion can prevent the waterproof member from being wetted with water.

[0013] [3] A gap through which liquid can flow is formed between the first shield shell and the extension portion. According to this configuration, the gap between the extending portion and the first shield shell can prevent water from accumulating between the extending portion and the first shield shell, thereby more effectively preventing the water blocking member from being wetted with water.

[0014] [4] A second shield shell is provided that covers the resin molded portion and the first shield shell, and the second shield shell has a metal shell body that covers the resin molded portion and the first shield shell, and a blocking member that is provided on the resin molded portion side of the shell body and blocks one end of the tubular portion, and gaps that allow liquid to flow are formed between the shell body and the blocking member, and between the shell body and the resin molded portion.

[0015] According to this configuration, for example, when water penetrates inside the shell body, the resin molded portion is easily exposed to water, and therefore the extension portion can more significantly prevent water from getting into the water-stopping member.

[0016] [5] When the side of the extension portion where the terminal holding portion is provided is defined as the rear side and the opposite side is defined as the front side, the shell body has an inclined portion that slopes from the rear end toward the front side so as to approach the resin molding portion.

[0017] With this configuration, the inclination of the inclined portion makes it easier for water adhering to the outer surface of the shell body to flow forward, i.e., to the side opposite the terminal holder, thereby making it possible to prevent water adhering to the outer surface of the shell body from flowing toward the terminal holder.

[0018] [Details of the embodiments of the present disclosure] Specific examples of terminal blocks according to the present disclosure are described below with reference to the drawings. In each drawing, for the sake of convenience, some of the components may be exaggerated or simplified. The dimensional proportions of each part may differ from drawing to drawing. The present disclosure is not limited to these examples, but is defined by the claims, and is intended to include all modifications within the meaning and scope of the claims. In this specification, "orthogonal" does not only refer to a strictly orthogonal configuration, but also includes a roughly orthogonal configuration within the scope of the present embodiment.

[0019] The term "cylindrical" as used in this specification does not only refer to a cylindrical object having a continuous wall formed around the entire circumference, but also includes a cylindrical object formed by combining multiple parts, or a C-shape having a notch in a portion of the circumference. The term "cylindrical" also includes circular, elliptical, and polygonal shapes with sharp or rounded corners.

[0020] In addition, "facing" in this specification refers to surfaces or components facing each other, and includes not only cases where they are completely facing each other, but also cases where they are partially facing each other. In addition, "facing" in this specification includes both cases where a component separate from the two components is interposed between the two components, and cases where nothing is interposed between the two components.

[0021] (Configuration of terminal block 10) 1 and 2A electrically connects vehicle devices such as motors and inverters. The terminal block 10 is attached to a device housing 100 having an opening 101. A plurality of metal mating terminals 110 are provided inside the housing 100. The device and the terminal block 10 attached to the device housing 100 are placed in an environment where they are prone to getting wet, such as an engine room of a vehicle.

[0022] The terminal block 10 includes a plurality of parallel terminals 20, a plurality of electric wires 30 connected to the plurality of terminals 20, and a housing 40 that holds the plurality of terminals 20 and the plurality of electric wires 30. The terminal block 10 includes, for example, three terminals 20 and three electric wires 30. The electric wires 30 are drawn out from the housing 40.

[0023] Hereinafter, the direction in which the multiple terminals 20 are arranged in parallel will be referred to as the X-axis direction, the direction in which the electric wires 30 drawn out from the housing 40 extend will be referred to as the Y-axis direction, and the direction perpendicular to both the X-axis direction and the Y-axis direction will be referred to as the Z-axis direction. The X-axis direction, the Y-axis direction, and the Z-axis direction are perpendicular to one another.

[0024] The terminal block 10 includes a first shield shell 50 that covers the housing 40, and a bracket 60 that is attached to the first shield shell 50. The terminal block 10 also includes a braided member 70 that covers the bracket 60, a crimping ring 80 that attaches the braided member 70 to the bracket 60, and a fixing member 90 that fixes the braided member 70 to the electric wire 30. The terminal block 10 also includes a second shield shell 120 that covers the housing 40 and the first shield shell 50.

[0025] (Configuration of terminal 20) 2A, terminal 20 has electric wire connection portion 21 and terminal connection portion 22. Terminal 20 is a single component in which electric wire connection portion 21 and terminal connection portion 22 are integrally formed. Terminal 20 can be made of a metal material such as a copper-based or aluminum-based material, for example.

[0026] The electric wire 30 is electrically connected to the electric wire connecting portion 21. The electric wire connecting portion 21 is connected to the electric wire 30 by, for example, crimping. The terminal connection portion 22 has, for example, a plate shape. The terminal connection portion 22 extends in the Y-axis direction from the electric wire connection portion 21. The terminal connection portion 22 is provided with an insertion hole 23 into which a bolt 111 is inserted. The insertion hole 23 penetrates the terminal connection portion 22 in the Z-axis direction. Each of the terminal connection portions 22 is electrically connected to a corresponding mating terminal 110 provided inside the housing 100 by the bolt 111 inserted into the insertion hole 23.

[0027] (Configuration of the electric wire 30) The electric wire 30 has a core wire 31 and an insulating coating 32 that covers the outer periphery of the core wire 31. The core wire 31 is exposed from the insulating coating 32 at the end of the electric wire 30. The core wire 31 exposed from the insulating coating 32 is connected to the electric wire connection portion 21 of the terminal 20.

[0028] (Configuration of housing 40) 2A and 3, housing 40 has a cylindrical hood portion 42 and a terminal holding portion 43 that protrudes from hood portion 42 toward the outer periphery of hood portion 42. Housing 40 can be made of a resin material such as polybutylene terephthalate (PBT).

[0029] The hood portion 42 constitutes a part of the cylindrical portion of the housing 40. The hood portion 42 has an opening 41 that exposes the terminal connection portions 22 of the multiple terminals 20 to the inside. The opening 41 penetrates the hood portion 42 in the Z-axis direction. The opening 41 has, for example, an elliptical shape that is long in the X-axis direction.

[0030] One end of the hood portion 42 in the Z-axis direction is provided with a cylindrical fitting portion 44 that fits into the opening 101 of the housing 100. The fitting portion 44 forms part of the cylindrical portion of the housing 40. An annular water-stopping member 46 made of an elastic material such as rubber is provided on the outer peripheral surface of the fitting portion 44. The water-stopping member 46 seals the gap between the fitting portion 44 and the opening 101 of the housing 100. The water-stopping member 46 is attached to a groove 44a that is formed in the circumferential direction on the outer peripheral surface of the fitting portion 44, for example.

[0031] (Configuration of extension portion 47) The housing 40 has a flange portion 45 that protrudes from the hood portion 42 toward the outer periphery of the hood portion 42. The flange portion 45 extends, for example, along the XY plane. The flange portion 45 protrudes from a portion of the hood portion 42 that is adjacent to the fitting portion 44 in the Z-axis direction and that does not include the terminal holding portion 43. The flange portion 45 is connected to the terminal holding portion 43 in the circumferential direction of the hood portion 42.

[0032] When a vehicle carrying a device to which the terminal block 10 is attached is placed on a horizontal surface, the terminal block 10 is mounted in a position where the XY plane intersects with the direction of gravity. That is, when the vehicle is placed on a horizontal surface, the flange portion 45 extends along a plane intersecting with the direction of gravity.

[0033] The flange portion 45 and the terminal holding portion 43 form an extending portion 47 that extends radially outward from the hood portion 42, which forms part of the tubular portion. The flange portion 45 and the terminal holding portion 43 are continuous in the circumferential direction of the hood portion 42. That is, the extending portion 47, which is made up of the flange portion 45 and the terminal holding portion 43, is provided around the entire circumference of the hood portion 42. In other words, the terminal holding portion 43 forms part of the circumferential direction of the extending portion 47, and the flange portion 45 forms the portion of the extending portion 47 other than the terminal holding portion 43. The outer edge of the flange portion 45 is located radially outward from the outer peripheral surface of the fitting portion 44. The terminal holding portion 43 also extends radially outward from the outer peripheral surface of the fitting portion 44.

[0034] The terminal holding portion 43 holds a plurality of terminals 20 and a plurality of electric wires 30. The plurality of terminals 20, the plurality of electric wires 30, and the housing 40 are integrated by insert molding. Each of the electric wires 30 is drawn out from the terminal holding portion 43 in one direction along the Y-axis.

[0035] 2A, the terminal 20 has a buried portion 24 buried inside the terminal holding portion 43. The buried portion 24 includes the electric wire connecting portion 21. The electric wire 30 is connected to the electric wire connecting portion 21, which is a part of the buried portion 24.

[0036] 1 and 2A, the housing 100 has, for example, an annular wall 103 extending along the Z-axis direction. The inner peripheral surface of the annular wall 103 forms the outer end of the opening 101. The annular wall 103 has an annular shape when viewed from the opening direction of the opening 101 (the Z-axis direction) (see FIG. 5).

[0037] 5 is a view of the opening 101 of the housing 100 as viewed from the opening direction (Z-axis direction). In FIG. 5, the outer edge of the extending portion 47, i.e., the outer edges of the flange portion 45 and the terminal holding portion 43, are indicated by two-dot chain lines. When viewed from the opening direction of the opening 101 (Z-axis direction), the extending portion 47 has an outer dimension larger than that of the opening 101 all around the circumference of the opening 101. Furthermore, when viewed from the opening direction of the opening 101 (Z-axis direction), the extending portion 47 of this embodiment has an outer dimension larger than that of the outer peripheral surface of the annular wall 103 all around the circumference of the opening 101.

[0038] 2A, the extension portion 47 is located on the side of the annular wall 103 in the Z-axis direction around the entire circumference of the annular wall 103. The flange portion 45 abuts against the tip end of the annular wall 103 in the Z-axis direction or faces it across a small gap. In addition, the terminal holding portion 43 abuts against the tip end of the annular wall 103 in the Z-axis direction or faces it across a small gap.

[0039] (Configuration of the first shield shell 50) The first shield shell 50 opens toward the casing 100 and covers the housing 40 from the side opposite the casing 100. The first shield shell 50 is not fixed to the housing 40. Therefore, the first shield shell 50 is provided so as to be movable relative to the housing 40. The first shield shell 50 covers at least the extension portion 47 of the housing 40.

[0040] 3, the first shield shell 50 has an attachment portion 51 that covers a portion of the terminal holding portion 43 and to which the bracket 60 is attached, a surrounding portion 53 that surrounds the outer periphery of the hood portion 42, and two fixing portions 55 that are fixed to the housing 100. The attachment portion 51, the surrounding portion 53, and the fixing portions 55 are integrally formed. The first shield shell 50 can be made of, for example, an iron-based or aluminum-based metal material. The first shield shell 50 of this embodiment is made of, for example, an aluminum alloy.

[0041] The mounting portion 51 covers the terminal holding portion 43 from the side opposite the housing 100 in the Z-axis direction. More specifically, the mounting portion 51 covers the portion of the terminal holding portion 43 opposite the housing 100 in the Z-axis direction and both side portions in the X-axis direction. The mounting portion 51 has a gate shape as a whole.

[0042] Two screw holes 52 into which bolts 65 are fastened are provided at both ends of the mounting portion 51 in the X-axis direction. The screw holes 52 pass through the mounting portion 51 in the Y-axis direction. The surrounding portion 53 has an insertion hole 54 into which the hood portion 42 is inserted. The insertion hole 54 passes through the surrounding portion 53 in the Z-axis direction. The insertion hole 54 has an elliptical shape that is long in the X-axis direction.

[0043] The surrounding portion 53 has a peripheral wall 53a that surrounds the outer peripheries of the hood portion 42 and the flange portion 45, and a top wall 53b that projects inward from the peripheral wall 53a around the entire periphery of the peripheral wall 53a. Top wall 53b covers the outer edge of flange portion 45 from the side opposite housing 100 in the Z-axis direction. That is, top wall 53b and flange portion 45 overlap when viewed from the Z-axis direction.

[0044] As shown in Fig. 2A, a gap through which liquid can pass is formed between the first shield shell 50 and the extending portion 47. More specifically, as shown in Fig. 2B, a gap S1 through which liquid can pass is formed between the top wall 53b of the surrounding portion 53 and the flange portion 45 in the Z-axis direction. In addition, a gap S2 through which liquid can pass is formed between the peripheral wall 53a of the surrounding portion 53 and the flange portion 45 in a direction perpendicular to the Z-axis. In addition, as shown in Fig. 2A, a gap through which liquid can pass is formed between the mounting portion 51 and the terminal holding portion 43.

[0045] 1, the fixing portion 55 has an insertion hole 56 into which a bolt 57 is inserted. The bolt 57 inserted into the insertion hole 56 is fastened to an internal thread portion 102 provided in the housing 100, thereby fixing the first shield shell 50 to the housing 100.

[0046] (Configuration of bracket 60) 2A and 3, the bracket 60 covers the entire periphery of the terminal holding portion 43. The bracket 60 is not fixed to the housing 40. Therefore, the bracket 60 is provided so as to be movable relative to the housing 40.

[0047] The bracket 60 has a cylindrical portion 61 into which the terminal holding portion 43 is inserted, an attachment portion 62 attached to the attachment portion 51 of the first shield shell 50, and a protruding piece 64 protruding from the cylindrical portion 61. The bracket 60 can be made of, for example, an iron-based or aluminum-based metal material. The bracket 60 of this embodiment is made of an aluminum alloy.

[0048] The cylindrical portion 61 covers the entire periphery of a portion of the terminal holding portion 43 that is adjacent in the Y-axis direction to a portion that is covered by the mounting portion 51 of the first shield shell 50. The cylindrical portion 61 has an end portion 61a to which the braided member 70 is attached.

[0049] 3, the mounting portion 62 protrudes outward from the end of the cylindrical portion 61 opposite the end 61a along the entire circumference. The mounting portion 62 is provided with two insertion holes 63 into which bolts 65 are inserted. The insertion holes 63 pass through the mounting portion 62 in the Y-axis direction. The bolts 65 inserted into the insertion holes 63 are fastened to the screw holes 52 of the first shield shell 50, thereby mounting the bracket 60 to the first shield shell 50.

[0050] 2A, the protruding piece 64 protrudes from the tubular portion 61 toward the hood portion 42 in the Y-axis direction. The protruding piece 64 is located on the opposite side of the terminal holding portion 43 from the attachment portion 51 of the first shield shell 50. A small gap is provided between the protruding piece 64 and the terminal holding portion 43 in the Z-axis direction.

[0051] 4, the protruding piece 64 extends in the X-axis direction across each of the plurality of terminals 20. When viewed in the Z-axis direction, the protruding piece 64 overlaps each of the plurality of terminals 20.

[0052] Hereinafter, of the multiple terminals 20, the terminal 20 located outermost on one side in the X-axis direction will be referred to as terminal 20A, and the terminal 20 located outermost on the other side in the X-axis direction will be referred to as terminal 20B.

[0053] One end of the protruding piece 64 in the X-axis direction straddles a part of the terminal 20A in the X-axis direction, and the other end of the protruding piece 64 in the X-axis direction straddles a part of the terminal 20B in the X-axis direction.

[0054] 2A , each of the wire connection portions 21 of the multiple terminals 20 is located between the attachment portion 51 and the protruding piece 64 of the first shield shell 50. Therefore, each of the wire connection portions 21 is covered by the attachment portion 51 and the protruding piece 64.

[0055] (Configuration of braided member 70) As shown in FIGS. 1, 2A, and 3, the braided member 70 is formed by, for example, braiding conductive wires into a tubular shape. The braided member 70 may be a braided member in which multiple types of metal wires are braided, or a braided member in which metal wires and resin wires are braided together. The metal wires may be made of, for example, a copper-based or aluminum-based metal material. The resin wires may be made of, for example, a reinforced fiber with excellent insulation and shear resistance, such as aramid fiber. The braided member 70 of this embodiment is formed by braiding aluminum alloy metal wires into a tubular shape.

[0056] The braided member 70 collectively covers the plurality of electric wires 30 drawn out from the housing 40. One end of the braided member 70 in the length direction covers the end 61a of the bracket 60 from the outer periphery side.

[0057] (Configuration of crimping ring 80) The crimping ring 80 has an annular shape and surrounds the outer peripheral surface of the end portion 61a of the bracket 60. The crimping ring 80 can be made of, for example, an iron-based, copper-based, or aluminum-based metal material. The crimping ring 80 of this embodiment is made of an aluminum alloy.

[0058] The crimping ring 80 is crimped to the end 61a of the bracket 60 with the braided member 70 sandwiched between the crimping ring 80 and the outer peripheral surface of the end 61a, thereby fixing the braided member 70 to the outer peripheral surface of the end 61a. This electrically connects the braided member 70 and the bracket 60.

[0059] (Configuration of fixing member 90) As shown in FIG. 1 , the fixing member 90 is, for example, a tape member. The fixing member 90 has an adhesive layer on one surface in the thickness direction. The fixing member 90 is wound around the outer peripheral surface of the braided member 70 multiple times with the adhesive layer facing inward. The braided member 70 is pressed against the electric wire 30 by the fixing member 90. As a result, the braided member 70 is fixed to the electric wire 30.

[0060] (Configuration of the second shield shell 120) As shown in FIGS. 2A and 6, the second shield shell 120 includes a shell body 121 and a blocking member 131 attached to the shell body 121.

[0061] Shell body 121 is formed of, for example, a metal material such as iron or aluminum. Shell body 121 has a plurality of insertion holes 123 into which bolts 122 are respectively inserted, as shown in Fig. 1. Bolts 122 inserted into insertion holes 123 are fastened to female thread portions 104 of housing 100, thereby fixing shell body 121 to housing 100.

[0062] The closing member 131 is formed of, for example, a resin member. As shown in FIG. 2A, the closing member 131 closes the opening 41 of the hood portion 42. More specifically, as shown in FIGS. 2A and 6, the closing member 131 has a fitting portion 132 that fits into the opening 41. An annular water-stopping member 133 made of, for example, an elastic material such as rubber is provided on the outer peripheral surface of the fitting portion 132. The water-stopping member 133 seals the fitting portion 132 and the opening 41.

[0063] Shell body 121 is formed with a first through hole 124 penetrating in the Z-axis direction and a pair of second through holes 125 penetrating in the Z-axis direction. Closure member 131 has a female thread portion 134 extending in the Z-axis direction from fitting portion 132 and entering first through hole 124. A gap is provided between the outer peripheral surface of female thread portion 134 and first through hole 124 (see FIG. 2B).

[0064] A screw 136 is threaded into the female thread portion 134. The screw 136 prevents the closing member 131 from falling off the shell body 121 before the shell body 121 is fixed to the housing 100. When the terminal block 10 is assembled to the housing 100, a gap exists between the seat surface of the screw 136 and the surface of the shell body 121 (see FIG. 2B).

[0065] 1 and 6, the blocking member 131 has a pair of positioning protrusions 137 that protrude in the Z-axis direction from the fitting portion 132 and fit into the pair of second through holes 125. A gap is set between the second through holes 125 and the positioning protrusions 137 inserted into the second through holes 125 (see the enlarged view in FIG. 1).

[0066] 2B, the blocking member 131 has an insulating wall 138 extending in the Z-axis direction from the fitting portion 132. The insulating wall 138 is disposed between adjacent terminal connection portions 22. The insulating wall 138 is intended to ensure an insulating distance between the terminal connection portions 22.

[0067] 2A, 2B, and 6, shell main body 121 has an inclined portion 126. Here, in the Y-axis direction, the side of extension portion 47 where terminal holding portion 43 is provided is referred to as the rear side, and the opposite side is referred to as the front side. Inclined portion 126 is inclined from the rear end of shell main body 121 toward the front side so as to approach housing 40. Note that first through hole 124 and second through hole 125 are formed in inclined portion 126, for example. The front end of shell main body 121 is located outward from peripheral wall 53a of surrounding portion 53 in the Y-axis direction.

[0068] 2B and 6, the end face of the closure member 131 facing the shell main body 121 in the Z-axis direction forms an inclined surface 139. The inclined surface 139 is inclined so as to approach the hood portion 42 from its rear end toward its front end. The female thread portion 134 and the positioning protrusion 137 extend from the inclined surface 139. As shown in FIG. 2B, a gap S3 through which liquid can pass is formed between the inclined surface 139 and the inner surface of the inclined portion 126 in the Z-axis direction. In addition, a gap S4 through which liquid can pass is also formed between the shell main body 121 and the housing 40.

[0069] (Assembly of terminal block 10) When assembling the terminal block 10 to the housing 100 , first, the fitting portion 44 of the housing 40 is inserted into the opening 101 of the housing 100 .

[0070] Next, each of the terminals 20 is electrically connected to each of the mating terminals 110 by a bolt 111 . Next, the fixing portion 55 of the first shield shell 50 is fixed to the female thread portion 102 of the housing 100 with the bolt 57. This allows the first shield shell 50 to be electrically connected to the housing 100 and grounded. Note that a bracket 60 to which a braided member 70 is attached is attached to the first shield shell 50 in advance. The braided member 70 is grounded to the housing 100 via the bracket 60 and the first shield shell 50.

[0071] Next, the second shield shell 120 is assembled. At this time, the blocking member 131 is fitted into the opening 41 of the hood portion 42. In addition, the shell main body 121 is fixed to the female thread portion 104 of the housing 100 with the bolt 122. As a result, the shell main body 121 is electrically connected to the housing 100 and is grounded.

[0072] In this way, the terminal block 10 is assembled into the housing 100. The operation of this embodiment will be described. When water is splashed on the terminal block 10, the water may seep into the inside of the shell body 121 of the second shield shell 120. Paths through which water can seep into the inside of the shell body 121 include the gap between the first through hole 124 and the female thread portion 134, or the gap between the second through hole 125 and the positioning protrusion 137, for example.

[0073] Water that has entered the inside of shell body 121 through first through-hole 124 or second through-hole 125 flows mainly onto inclined surface 139 of closure member 131. Due to the inclination of inclined surface 139, water that has adhered to inclined surface 139 flows mainly forward, that is, toward the side opposite terminal holding portion 43, and falls from the front end of inclined surface 139 onto flange portion 45 (see the dashed arrow in FIG. 2B ). Although inclined surface 139 makes it easier for water to flow forward, water may also fall rearward from inclined surface 139 and adhere to terminal holding portion 43. In this way, water adheres to extension portion 47, which includes flange portion 45 and terminal holding portion 43.

[0074] Here, when viewed from the opening direction of the opening 101 (the Z-axis direction), the extension portion 47 has outer dimensions larger than the opening 101 around the entire periphery. As a result, the extension portion 47 acts like a canopy that covers the entire periphery of the opening 101. Therefore, most of the water adhering to the extension portion 47 flows toward the outer periphery of the opening 101. For example, water adhering to the flange portion 45 flows toward the outer periphery of the opening 101 through the gap S2 between the flange portion 45 and the peripheral wall 53a of the surrounding portion 53. In this way, the extension portion 47, including the flange portion 45, can direct water that has infiltrated inside the second shield shell 120 to the outer surface of the housing 100 around the opening 101. Therefore, the extension portion 47 prevents water from infiltrating between the opening 101 and the fitting portion 44.

[0075] The effects of this embodiment will be described. (1) The water-stopping member 46 is disposed between the outer peripheral surface of the fitting portion 44 and the inner peripheral surface of the opening 101. This allows the water-stopping member 46 to be disposed in a recessed position within the opening 101, thereby preventing the water-stopping member 46 from being wetted. Furthermore, in this embodiment, the extension portion 47 is provided around the entire circumference of the hood portion 42. When the fitting portion 44 is fitted into the opening 101, the extension portion 47 has outer dimensions larger than those of the opening 101 around the entire circumference of the opening 101 when viewed from the opening direction of the opening 101 (the Z-axis direction in this embodiment). This allows the extension portion 47 to suitably prevent water from entering the opening 101. Therefore, the extension portion 47 can further prevent the water-stopping member 46 from being wetted.

[0076] Furthermore, by using the extension portion 47 of the housing 40 to prevent water from entering between the opening 101 and the fitting portion 44, it is not necessary to provide a waterproof structure in the first shield shell 50 or the second shield shell 120 that covers the extension portion 47. As a result, this can contribute to simplifying the structures of the first shield shell 50 and the second shield shell 120.

[0077] Furthermore, because the first shield shell 50 is configured to cover the extending portion 47, it is possible to prevent incorrect assembly of the housing 40 into the opening 101. In other words, if the fitting portion 44 of the housing 40 is not fitted to the correct position in the opening 101, the first shield shell 50 will interfere with the extending portion 47 when assembling the first shield shell 50 to the casing 100, making it easy for an operator to notice the incorrect assembly.

[0078] (2) The extending portion 47 is configured to include, in a portion of the circumferential direction, a terminal holding portion 43 that holds the terminal 20. The terminal 20 has a terminal connection portion 22 that protrudes from the inner peripheral surface of the hood portion 42 toward the inner peripheral side of the hood portion 42, and an embedded portion 24 that is embedded inside the terminal holding portion 43. The electric wire 30 is connected to the embedded portion 24 and is drawn from the inside of the housing 40 to the outside. With this configuration, the terminal holding portion 43 that holds the embedded portion 24 of the terminal 20 forms a part of the extending portion 47. In other words, the extending portion 47, including the terminal holding portion 43, makes it possible to prevent the water-stopping member 46 from being wetted.

[0079] (3) Gaps S1 and S2 through which liquid can pass are formed between the first shield shell 50 and the extending portion 47. According to this configuration, the gaps S1 and S2 between the extending portion 47 and the first shield shell 50 can prevent water from accumulating between the extending portion 47 and the first shield shell 50. As a result, it is possible to more effectively prevent the water-stopping member 46 from being wetted.

[0080] (4) The terminal block 10 includes a second shield shell 120 that covers the housing 40 and the first shield shell 50. The second shield shell 120 includes a metal shell main body 121 that covers the housing 40 and the first shield shell 50, and a closing member 131 that is provided on the housing 40 side of the shell main body 121 and closes one end of the hood portion 42. A gap S3 that allows liquid to pass is formed between the shell main body 121 and the closing member 131. Furthermore, a gap S4 that allows liquid to pass is formed between the shell main body 121 and the housing 40. With this configuration, for example, when water infiltrates the inside of the shell main body 121, the housing 40 is susceptible to water exposure due to the gaps S3 and S4, so the extension portion 47 can more significantly suppress water exposure to the water-stopping member 46.

[0081] (5) When the side of extension 47 where terminal holding portion 43 is provided is defined as the rear side and the opposite side as the front side, shell body 121 has inclined portion 126 that slopes from the rear end toward the front side so as to approach housing 40. With this configuration, the inclination of inclined portion 126 makes it easier for water adhering to the outer surface of shell body 121 to flow toward the front side, i.e., the opposite side of terminal holding portion 43. This makes it possible to prevent water adhering to the outer surface of shell body 121 from flowing toward terminal holding portion 43.

[0082] <Example of change> This embodiment can be modified as follows: This embodiment and the following modifications can be combined and implemented within the scope of technical compatibility.

[0083] The fixing member 90 is not limited to a tape member, but may also be, for example, a cable tie that fastens the braided member 70 to the electric wire 30. The fixing member 90 can be omitted from the terminal block 10.

[0084] The terminal block 10 may include a plurality of braided members 70 that individually cover the outer peripheries of a plurality of electric wires 30. In this case, the fixing member 90 may fix the plurality of braided members 70 to the plurality of electric wires 30 collectively, or may fix the plurality of braided members 70 to the plurality of electric wires 30 individually.

[0085] The braided member 70 may cover a part of the outer periphery of the electric wire 30. The braided member 70 may be, for example, in a sheet shape, and may cover the electric wire 30 only from the side opposite to the housing 100.

[0086] The braided member 70 can be omitted from the terminal block 10. In this case, the plurality of electric wires 30 may be, for example, shielded electric wires that have electromagnetic shielding properties themselves. While the hood portion 42 in the above embodiment has an opening 41 that penetrates in the Z-axis direction, the hood portion 42 may have an opening 41 that opens only at the fitting portion 44. In this case, for example, a pin-shaped male terminal having a tip that extends from inside the hood portion 42 toward the opening of the fitting portion 44 can be used as the terminal 20. Also, a female terminal into which the male terminal is inserted can be used as the mating terminal 110.

[0087] The protruding piece 64 may extend across the entire terminal 20A and the entire terminal 20B in the X-axis direction. The protruding piece 64 may extend across only one terminal 20 in the X-axis direction.

[0088] In the housing 100 of the above embodiment, the annular wall 103 may be omitted. The embodiments and modifications disclosed herein are illustrative in all respects, and the present invention is not limited to these examples. That is, the scope of the present invention is defined by the claims, and it is intended to include all modifications within the meaning and scope of the claims. The technical concept is described below. (1) A terminal block to be attached to an opening provided in a housing of a device, the terminal block comprising: a cylindrical portion that fits into the opening; a resin molded portion made of resin having an extension extending from the cylindrical portion toward the outer periphery; a terminal that protrudes from the inner periphery of the cylindrical portion toward the inner periphery of the cylindrical portion; an electric wire connected to the terminal; a water-stopping member that is disposed between the outer periphery of the cylindrical portion and the inner periphery of the opening to stop water from flowing between them; and a first shield shell made of metal that covers the extension; the extension is provided around the entire circumference of the cylindrical portion; and when the cylindrical portion is fitted into the opening, the extension extends from the opening. A terminal block (Technical Idea 1) comprising a second shield shell that has larger outer dimensions than the opening around the entire circumference of the opening when viewed from the opening direction, and that covers the resin molded portion and the first shield shell, the second shield shell having a metal shell body that covers the resin molded portion and the first shield shell, and a blocking member that is provided on the resin molded portion side of the shell body and blocks one end of the tubular portion, and gaps that allow liquid to flow are formed between the shell body and the blocking member, and between the shell body and the resin molded portion, respectively. (2) A terminal block of technical idea 1 (technical idea 2), in which when the side of the extension portion where the terminal holding portion is provided is defined as the rear side and the opposite side is defined as the front side, the shell body has an inclined portion that slopes from the rear end toward the front side so as to approach the resin molded portion. [Explanation of symbols]

[0089] 10 Terminal block 20 terminals 20A terminal 20B terminal 21 Wire connection 22 Terminal connection part 23 Insertion hole 24 Buried section 30 Electric wire 31 Core Wire 32 Insulation coating 40 Housing (plastic molded part) 41 Aperture 42 Hood part (part of the tube part) 43 Terminal holding part 44 Fitting part (part of the cylindrical part) 44a groove 45 flange 46 Water-stopping material 47 Extension 50 First Shield Shell 51 Mounting part 52 screw hole 53 Surrounding area 53a Peripheral wall 53b Top wall 54 Insertion hole 55 Fixed part 56 Insertion hole 57 volts 60 Bracket 61 Cylindrical part 61a End 62 Mounting part 63 Insertion hole 64 Projecting piece 65 volts 70 Braided material 80 Crimping ring 90 Fixing member 100 cabinets 101 Aperture 102 Female thread 103 Circular Wall 104 Female thread 110 Mating terminal 111 volts 120 Second Shield Shell 121 Shell body 122 volts 123 Insertion hole 124 First through hole 125 Second through hole 126 Slope 131 Closure member 132 fitting part 133 Water-stopping materials 134 Female thread 136 Screw 137 Positioning protrusion 138 Insulating Wall 139 Slope S1, S2, S3, S4 gap

Claims

1. A terminal block that is attached to an opening provided in a housing of a device, a resin molded portion made of resin, the resin molded portion having a cylindrical portion that fits into the opening and an extension portion that extends from the cylindrical portion toward an outer periphery; a terminal protruding from an inner peripheral surface of the cylindrical portion toward the inner peripheral side of the cylindrical portion; an electric wire connected to the terminal; a water-stopping member disposed between an outer peripheral surface of the cylindrical portion and an inner peripheral surface of the opening to stop water from flowing between them; a first shield shell made of metal that covers the extension portion, The extension portion is provided around the entire circumference of the cylindrical portion, When the cylindrical portion is fitted in the opening, the extension portion has an outer dimension larger than that of the opening over the entire periphery of the opening when viewed from the opening direction, Gaps through which a liquid can flow are formed between the first shield shell and the extension portion, and between the first shield shell and the housing. terminal block.

2. The extension portion includes a terminal holding portion that holds the terminal in a circumferential direction, the terminal has a terminal connection portion that protrudes from an inner peripheral surface of the cylindrical portion toward the inner peripheral side of the cylindrical portion, and an embedded portion that is embedded inside the terminal holding portion, The electric wire is connected to the embedded portion and is drawn out from the inside to the outside of the resin molding portion. The terminal block according to claim 1 .

3. a second shield shell covering the resin molded portion and the first shield shell; the second shield shell includes a metal shell main body that covers the resin molded portion and the first shield shell, and a closing member that is provided on the shell main body on the resin molded portion side and closes one end of the cylindrical portion, Gaps through which a liquid can pass are formed between the shell body and the closing member, and between the shell body and the resin molded portion. The terminal block according to claim 1 or 2.

4. When the side of the extension portion where the terminal holding portion is provided is defined as the rear side and the opposite side is defined as the front side, The shell main body has an inclined portion that is inclined from the rear end toward the front side so as to approach the resin molded portion.

4. The terminal block according to claim 3, which is dependent on claim 2.

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