JP2007035457A - Terminal stand - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a terminal stand with workability improved and material cost curtailed. <P>SOLUTION: An outer-connection grounding terminal 8 is provided at a surface side of a main body 1, and an inner-connection grounding terminal 9 electrically connected with the outer-connection grounding terminal 8 is provided at the main body 1. A rear face of a grounding part of the inner-connection grounding terminal 9 is on the same plane as that of the main body. The grounding part of the inner-connection grounding terminal 9 has a screw hole 25 provided. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a terminal block used in, for example, an air conditioner.

  Conventionally, as shown in FIG. 10, a terminal block includes a main body 101 and a conductive terminal 102 provided on the main body 101 and extending substantially in a straight line.

  One end of the conductive terminal 102 serves as an external wiring connection side ground terminal 103, and the other end serves as an internal wiring connection side ground terminal 104.

  The external wiring connection side ground terminal 103 and the internal wiring connection side ground terminal 104 are provided with screw holes 105 and 106, and screws 107 and 108 are screwed into the screw holes 105 and 106, respectively.

  The terminal block having the above configuration is attached to the chassis such that the back surface of the main body 101 contacts the sheet metal chassis. Then, the external wiring connection side ground terminal 103 is connected to the external grounding wire 151, and the in-machine wiring connection side ground terminal 104 is connected to the chassis 150 via the internal grounding wire 152. At this time, the two screws 107 and 108 screwed into the screw holes 105 and 106 are tightened, and one screw 153 is tightened to fix the in-machine ground wire 152 to the chassis 150.

  However, when the external ground wire 151 is grounded using the conventional terminal block, after the screw 107 is tightened to connect the external ground wire 151 to the external wiring connection side ground terminal 103, the internal wiring In order to connect the connection-side ground terminal 104 to the chassis 150, the two screws 106 and 153 must be tightened. That is, after the external ground wire 151 is connected to the external wiring connection side ground terminal 103, it is necessary to perform the tightening operation twice. Therefore, there is a problem that workability is poor.

Further, in order to ground the external ground wire 151, in addition to the conventional terminal block, the internal ground wire 152 and the screw 153 are required, so there is a problem that the material cost becomes high.
JP 2000-353555 A

  Therefore, an object of the present invention is to provide a terminal block that can improve workability and reduce material costs.

In order to solve the above problems, the terminal block of the present invention is
A main body with the back side as a mounting surface;
An external connection ground terminal provided on the surface side of the main body,
An internal connection ground terminal provided on the main body, electrically connected to the external connection ground terminal, and a back surface of the ground portion being flush with the back surface of the main body;
And a screw hole provided in a grounding portion of the internal connection ground terminal.

  According to the terminal block having the above configuration, when the main body is attached to, for example, a conductive member and this member and the back surface of the main body are brought into contact with each other, the back surface of the grounding portion of the internal connection ground terminal is flush with the back surface of the main body. Therefore, the back surface of the grounding portion of the internal connection ground terminal is also in contact with the conductive member.

  Therefore, after connecting a ground wire, for example, to the external connection ground terminal, the ground wire can be grounded to the conductive member by simply screwing the screw into the screw hole of the internal connection ground terminal.

  As a result, the screw tightening work performed after connecting the ground wire to the external connection ground terminal is reduced to one time, and the workability can be improved.

  Further, since the ground wire for connecting the internal connection ground terminal to the conductive member and the screw for fixing the ground wire to the conductive member are not required, the material cost can be reduced.

In the terminal block of one embodiment,
The internal connection ground terminal is bent like a bowl.

  According to the terminal block of the embodiment, the internal connection ground terminal is bent in a bowl shape, so that the structure can be simplified.

In the terminal block of one embodiment,
An external connection terminal provided on the surface side of the main body separately from the external connection ground terminal,
In addition to the internal connection ground terminal, the internal connection terminal is provided on the surface side of the main body and electrically connected to the external connection terminal.

  When the terminal block of the above embodiment is attached to a chassis made of sheet metal, for example, an external connection terminal different from the external connection ground terminal and an internal connection terminal different from the internal connection ground terminal are provided on the surface side of the main body. Because the connection work between the external connection ground terminal and the external wiring can be performed on one side of the chassis, and the connection work between the internal connection ground terminal and the internal wiring can be performed on one side of the chassis, Workability can be further improved.

In the terminal block of one embodiment,
An external connection terminal provided on the surface side of the main body separately from the external connection ground terminal,
In addition to the internal connection ground terminal, the internal connection terminal is provided on the back side of the main body and electrically connected to the external connection terminal.

  When the terminal block of the above embodiment is attached to a sheet metal chassis having a through hole, for example, if the main body is attached to the surface of the sheet metal chassis so as to close the through hole, an internal connection different from the internal connection ground terminal Since the terminal is located on the back side of the main body, it can be located on the back side of the sheet metal chassis.

  Therefore, the internal wiring can be connected to an internal connection terminal different from the internal connection ground terminal without having to pull out the internal wiring on the back side of the sheet metal chassis, for example, to the front side of the sheet metal chassis. Workability can be further improved.

  According to the terminal block of the present invention, when the main body is attached to, for example, a conductive member and this member and the back surface of the main body are brought into contact, the back surface of the grounding portion of the internal connection ground terminal is flush with the back surface of the main body. As a result, the back surface of the grounding portion of the internal connection ground terminal also comes into contact with the conductive member. Therefore, after connecting, for example, a ground wire to the external connection ground terminal, screws are screwed into the screw holes of the internal connection ground terminal. Only the ground wire can be grounded to the conductive member.

  Therefore, the screw tightening operation performed after the ground wire is connected to the external connection ground terminal is small, and the workability can be improved.

  Further, since the ground wire for connecting the internal connection ground terminal to the conductive member and the screw for connecting the ground wire to the conductive member are not required, the material cost can be reduced.

  In the terminal block of one embodiment, since the internal connection ground terminal is bent in a bowl shape, the structure can be simplified.

  When the terminal block of one embodiment is attached to a chassis made of sheet metal, for example, an external connection terminal different from the external connection ground terminal and an internal connection terminal different from the internal connection ground terminal are provided on the surface side of the main body. Because the connection work between the external connection ground terminal and the external wiring can be performed on one side of the chassis, and the connection work between the internal connection ground terminal and the internal wiring can be performed on one side of the chassis, Workability can be further improved.

  When the terminal block of one embodiment is attached to a sheet metal chassis having a through hole, for example, when the main body is attached to the surface of the sheet metal so as to close the through hole, an internal connection terminal different from the internal connection ground terminal is provided on the main body. Therefore, the internal connection terminals are exposed on the back side of the sheet metal.

  Therefore, since the internal wiring can be connected to an internal connection terminal different from the internal connection ground terminal, for example, without drawing the internal wiring on the back side of the sheet metal to the front side of the sheet metal, workability is further improved. be able to.

  Hereinafter, the terminal block of the present invention will be described in detail with reference to the illustrated embodiments.

(First embodiment)
In FIG. 1, the schematic which looked at the terminal block of 1st Embodiment of this invention from the surface side is shown.

  The terminal block includes a main body 1 having a screw hole 10 for fixing, a first conductive terminal 11, a second conductive terminal 12, a third conductive terminal 13, and a fourth conductive terminal provided in the main body 1. 14. The main body 1 has a back surface as a mounting surface.

  One end portions of the first and second conductive terminals 11 and 12 serve as first and second external connection power supply terminals 2 and 4 connected to the power supply wires of the internal and external connection wirings. The other ends of the first and second conductive terminals 11 and 12 serve as first and second internal connection power supply terminals 3 and 5 connected to the power supply wires of the harness.

  One end of the third conductive terminal 13 serves as an external connection signal terminal 6 connected to the signal line of the connection wiring. The other end of the third conductive terminal 13 serves as an internal connection signal terminal 7 connected to the signal line of the harness.

  One end of the fourth conductive terminal 14 serves as an external connection ground terminal 8 connected to the ground wire 51 (see FIG. 4) of the internal / external communication wiring. The other end of the fourth conductive terminal 14 is an internal connection ground terminal 9.

  In addition, 25 of FIG. 1 is a screw hole.

  FIG. 2 is a schematic cross-sectional view taken along line II-II in FIG.

  The first conductive terminal 11 is composed of two sheet metals. On the first external connection power supply terminal 2 side, the two sheet metals are in contact with each other without a substantial gap. Further, on the first internal connection power supply terminal 3 side, the front side metal plate of the two metal plates is bent so that a gap is formed between the two metal plates.

  The first external connection power supply terminal 2 has a screw hole 23 into which the screw 15 is screwed. As shown in FIGS. 1 and 2, a square seat 19 is disposed between the first external connection power supply terminal 2 and the head of the screw 15. A spring washer may be disposed between the square seat 19 and the head of the screw 15.

  Further, as shown in FIG. 1, corner seats 20 and 21 are also arranged on the second external connection power supply terminal 4 and the external connection signal terminal 6, and screws 16 and 17 are connected to the corner seats 20 and 21. It is inserted.

  The second and third conductive terminals 12 and 13 have the same shape as the first conductive terminal.

  FIG. 3 is a schematic sectional view taken along line III-III in FIG.

  The fourth conductive terminal 14 is made of a single sheet metal and penetrates the main body 1 in the left-right direction in FIG.

  The external connection ground terminal 8 is located on the surface side of the main body 1 and has a screw hole 24 into which the screw 18 is screwed. As shown in FIGS. 1 and 3, a square seat 22 is disposed between the external connection ground terminal 8 and the head of the screw 18.

  The internal connection ground terminal 9 is bent like a bowl. The internal connection ground terminal 9 includes a grounding portion that extends in the left-right direction in FIG. 3 and contacts the chassis 50 (see FIG. 4) made of sheet metal. More specifically, the internal connection ground terminal 9 extends from a substantially central portion of the main body 1 to the back surface of the main body 1, then bends and extends in parallel with the back surface of the main body 1.

  The back surface of the grounding portion is flush with the back surface of the main body 1. In other words, the back surface of the grounding portion is substantially flush with the back surface of the main body 1. Further, the grounding portion is provided with a screw hole 25 into which a screw 52 (see FIG. 4) is screwed. The screw hole 25 extends from the surface of the ground portion of the internal connection ground terminal 9 to the back surface of the ground portion of the internal connection ground terminal 9. That is, the screw hole 25 passes through the grounding portion of the internal connection ground terminal 9.

  When grounding the ground wire 51 of the internal / external communication wiring as shown in FIG. 4 using the terminal block having the above-described configuration, the back surface of the main body 1 is brought into contact with the sheet metal chassis 50 and screwed into the screw hole 10 of the main body 1. The main body 1 is fixed to the chassis 50 by tightening the screws to be joined. Then, since the back surface of the ground portion of the internal connection ground terminal 9 is flush with the back surface of the main body 1, the back surface of the ground portion of the internal connection ground terminal 9 also contacts the chassis 50.

  Therefore, after connecting the ground wire 51 of the internal / external connection wiring to the external connection ground terminal 8, the grounding of the ground wire 51 is completed simply by tightening the screw 52 screwed into the screw hole 25 of the internal connection ground terminal 9. To do.

  As a result, the screw tightening operation performed after connecting the ground wire 51 of the internal / external connection wiring to the external connection ground terminal 8 is small, and the workability can be improved.

  Further, since the ground wire for connecting the internal connection ground terminal 9 to the chassis 50 and the screw for fixing the ground wire to the chassis 50 are not required, the material cost can be reduced. Specifically, material costs can be reduced because the ground wire 152 and the screw 153 in FIG. 10 are not required.

  Further, since the internal connection ground terminal 9 is bent like a bowl, the structure can be simplified.

(Second Embodiment)
In FIG. 5, the schematic which looked at the terminal block of 2nd Embodiment of this invention from the surface side is shown.

  The terminal block includes a main body 201 having fixing screw holes 210 and 230, a first conductive terminal 211, a second conductive terminal 212, a third conductive terminal 213 and a fourth conductive terminal provided in the main body 201. And a conductive terminal 214. The main body 201 has a back surface as a mounting surface.

  One end of the fourth conductive terminal 214 serves as an external connection ground terminal 208 connected to the ground line of the internal / external communication wiring. The other end of the fourth conductive terminal 214 is an internal connection ground terminal 209.

  Note that reference numeral 225 in FIG. 5 denotes a screw hole.

  FIG. 6 is a schematic cross-sectional view taken along line VI-VI in FIG.

  The first conductive terminal 211 has a U-shaped cross section and penetrates the main body 201 in the vertical direction of FIG.

  As shown in FIGS. 5 and 6, one end of the first conductive terminal 211 serves as a first external connection power supply terminal 202 located on the surface side of the main body 201. The first external connection power supply terminal 202 is connected to a power supply wire for internal and external connection wiring. Also, the first external connection power terminal 202 is provided with a screw hole 223 into which a screw 215 is screwed. A spring washer 226 and a square seat 219 are disposed between the head of the screw 215 and the first external connection power supply terminal 202.

  The other end of the first conductive terminal 211 serves as a first internal connection power supply terminal 203 located on the back side of the main body 201. A power supply wire of a harness is connected to the first internal connection power supply terminal 203.

  The second and third conductive terminals 212 and 213 have the same shape as the first conductive terminal 211.

  More specifically, as shown in FIG. 1, one end of the second conductive terminal 212 is a second external connection power supply terminal 204 connected to the power supply wire of the internal / external connection wiring. The other end of the second conductive terminal 212 is a second internal connection power supply terminal that is connected to the power supply wire of the harness (not shown).

  One end of the third conductive terminal 213 serves as an external connection signal terminal 206 connected to the signal line of the internal / external connection wiring. The other end of the third conductive terminal 213 serves as an internal connection signal terminal connected to a signal line of the harness (not shown).

  Further, corner seats 220 and 221 and spring washers 227 and 228 are also arranged on the second external connection power supply terminal 204 and the external connection signal terminal 206, and the corner seats 220 and 221 and the spring washers 227 and 228 are screwed. The shaft portions of 216 and 217 are inserted.

  The first and second external connection power terminals 202 and 204 and the external connection signal terminal 206 are examples of external connection terminals. The first internal connection power supply terminal 203, the second internal connection power supply terminal, and the internal connection signal terminal are examples of internal connection terminals.

  FIG. 7 shows a schematic cross-sectional view as seen from VII-VII in FIG.

  The fourth conductive terminal 214 penetrates the main body 201 in the left-right direction of FIG.

  As shown in FIGS. 5 and 7, the external connection ground terminal 208 is located on the surface side of the main body 201 and has a screw hole 224 into which the screw 218 is screwed. A spring washer 229 and a square seat 222 are arranged between the external connection ground terminal 208 and the head of the screw 252.

  The internal connection ground terminal 209 is bent like a bowl. The internal connection ground terminal 209 includes a grounding portion that extends in the left-right direction in FIG. 7 and is to contact a sheet metal chassis 250 (see FIG. 9). More specifically, the internal connection ground terminal 9 extends from a substantially central portion of the main body 1 to the back surface of the main body 1, then bends and extends in parallel with the back surface of the main body 1.

  The back surface of the grounding portion is flush with the back surface of the main body 201. In other words, the back surface of the grounding portion and the back surface of the main body 201 are substantially flush with each other. Further, the grounding portion is provided with a screw hole 225 into which the screw 252 is screwed. The screw hole 225 reaches from the surface of the ground portion of the internal connection ground terminal 209 to the back surface of the ground portion of the internal connection ground terminal 209. That is, the screw hole 225 passes through the grounding portion of the internal connection ground terminal 209.

  According to the terminal block having the above configuration, as shown in FIG. 8, the portion of the main body 201 where the first to third conductive terminals 211 to 213 are provided closes the through hole 254 of the chassis 250 made of sheet metal. The main body 201 is attached to the chassis 250, and screws that are screwed into the screw holes 210 and 230 of the main body 201 are tightened to fix the main body 201 to the chassis 250. At this time, as shown in FIG. 9, the back surface of the portion of the main body 201 where the fourth conductive terminal 214 is provided contacts the chassis 250. Then, the back surface of the grounding portion of the internal connection ground terminal 209 is flush with the back surface of the portion where the fourth conductive terminal 214 is provided with respect to the main body 201. The back surface also contacts the chassis 250.

  Therefore, after connecting the ground wire 251 of the internal / external connection wiring to the external connection ground terminal 208, the grounding of the ground wire 251 is completed simply by tightening the screw 252 screwed into the screw hole 225 of the internal connection ground terminal 209. To do.

  As a result, the screw tightening work performed after connecting the ground wire 251 of the internal / external connection wiring to the external connection ground terminal 208 is reduced to one time, and workability can be improved.

  Further, since the ground wire for connecting the internal connection ground terminal 209 to the chassis 250 and the screw for fixing the ground wire to the chassis 250 are not necessary, the material cost can be reduced. Specifically, the material cost can be reduced because the ground wire 152 and the screw 153 in FIG. 9 are not required.

  Further, since the internal connection ground terminal 209 is bent like a bowl, the structure can be simplified.

  Further, when the main body 201 is fixed to the chassis 250, the first internal connection power supply terminal 203, the second internal connection power supply terminal and the internal connection signal terminal are located on the back side of the main body 201. It is exposed on the back side of the chassis 250.

  Therefore, even if the wiring of the harness on the back side of the chassis 250 is not pulled out to the front side of the chassis 250, the wiring of the harness is connected to the first internal connection power supply terminal 203, the second internal connection power supply terminal, and the internal connection signal terminal. Therefore, workability can be further improved.

  In the first and second embodiments, one end of the grounding portion of the internal connection ground terminal is in close contact with the main body. However, even if a gap is provided between the one end of the grounding portion of the internal connection ground terminal and the main body. Good.

  The terminal blocks of the first and second embodiments may be attached to a conductive member other than a sheet metal chassis. For example, you may attach the terminal block of the said 1st, 2nd embodiment to an electroconductive block.

  Needless to say, the terminal blocks of the first and second embodiments can also be used in various electrical devices other than air conditioners.

FIG. 1 is a schematic top view of a terminal block according to a first embodiment of the present invention. 2 is a cross-sectional view taken along line II-II in FIG. 3 is a cross-sectional view taken along line III-III in FIG. FIG. 4 is a schematic cross-sectional view for explaining the usage state of the terminal block of the first embodiment. FIG. 5 is a schematic top view of the terminal block according to the second embodiment of the present invention. 6 is a cross-sectional view taken along line VI-VI in FIG. FIG. 7 is a schematic cross-sectional view as seen from VII-VII in FIG. FIG. 8 is a schematic cross-sectional view for explaining the usage state of the terminal block of the second embodiment. FIG. 9 is a schematic cross-sectional view for explaining the usage state of the terminal block of the second embodiment. FIG. 10 is a schematic cross-sectional view for explaining a use state of a conventional terminal block.

Explanation of symbols

1, 201 Body 2, 202 First external connection power supply terminal 3, 203 First internal connection power supply terminal 4, 204 Second external connection power supply terminal 5 Second internal connection power supply terminal 6, 206 External connection signal terminal 7 Internal connection signal terminals 8, 208 External connection ground terminals 9, 209 Internal connection ground terminals 25, 225 Screw holes

Claims (4)

A main body (1, 201) with the back side as a mounting surface;
An external connection ground terminal (8, 208) provided on the surface side of the main body (1, 201);
An internal connection ground provided on the main body (1, 201) and electrically connected to the external connection ground terminal (8, 208), wherein the back surface of the grounding portion is flush with the back surface of the main body (1, 201). Terminals (9, 209);
A terminal block comprising screw holes (25, 225) provided in a grounding portion of the internal connection ground terminal (9, 209). The terminal block according to claim 1,
A terminal block characterized in that the internal connection ground terminal (9, 209) is bent like a bowl. The terminal block according to claim 1 or 2,
In addition to the external connection ground terminal (8), external connection terminals (2, 4, 6) provided on the surface side of the main body (1),
Internal connection terminals (3, 5, 7) provided on the surface side of the main body separately from the internal connection ground terminals (9) and electrically connected to the external connection terminals (2, 4, 6) A terminal block characterized by comprising: The terminal block according to claim 1 or 2,
In addition to the external connection ground terminal (208), external connection terminals (202, 204, 206) provided on the front side of the main body (201),
In addition to the internal connection ground terminal (209), an internal connection terminal (203) provided on the back side of the main body (201) and electrically connected to the external connection terminals (202, 204, 206) is provided. Terminal block characterized by comprising.

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