JP6333060B2 - Terminal block - Google Patents

Description

  The present invention relates to a terminal block of a series unit that is installed on an indoor wall surface or the like and supplies a reception signal to an indoor television receiver or the like.

  The series unit is generally used by being attached to a box-like box embedded in an indoor wall surface. The serial unit has an output coaxial terminal for connecting to an indoor TV receiver or the like with a coaxial cable, and an input cable connected to a coaxial cable that guides a received signal such as an antenna arranged in the internal space of the wall. A coaxial terminal is provided. When the conventional series unit is attached to the box, the box is embedded in the wall surface, so that the series unit is attached to the box by providing an opening in the wall surface. A terminal block is mounted on the front surface of the conventional series unit, and a coaxial terminal provided on the front surface of the series unit protrudes from a cylindrical hole provided in the terminal block.

  By the way, conventionally, the downlink signal transmitted from the center apparatus is transmitted to the terminal apparatus via the indoor transmission line, and the uplink signal from the terminal apparatus is transmitted to the center apparatus side via the same transmission line as the downlink signal. There are known two-way CATV systems that transmit to the Internet. In this bidirectional CATV system, a downstream unit and an upstream signal can be transmitted bidirectionally to a terminal device using a serial unit. By the way, if the serial unit is configured so that the upstream and downstream signals can always be transmitted bi-directionally, a terminal device (a TV tuner, a television receiver, a video tape recorder, etc.) that does not output an upstream signal to the output terminal. ) Is connected, or when the output terminal is open and not terminated, noise flows into the transmission line of the bidirectional CATV system via the output terminal and becomes inflow noise. , It may be transmitted to the center device together with other upstream signals. In order to prevent this, some serial units include a switch for switching between the one-way communication mode and the two-way communication mode (see Patent Documents 1 and 2).

JP 2002-25648 A JP 2002-101402 A

  The series unit generally includes a metal case, and a circuit board is arranged in the case, and a branch circuit and a switch for switching between the one-way communication mode and the two-way communication mode are provided on the circuit board. ing. In this case, since the case is often formed in a rectangular parallelepiped shape whose lateral dimension is larger than the height, the circuit board is arranged in the lateral direction in the case. In general, the switch has a configuration in which a plurality of switch terminals are led out from the lower surface and an operation knob is provided on the upper surface. The switch is generally provided upright on the circuit board. When the circuit board is disposed in the horizontal direction, the knob of the switch is directed upward or downward. In this case, it is required that the switch can be operated from the front surface of the series unit, but the switch does not face the front surface direction. Therefore, in order to operate the switch from the front surface of the series unit, a switch knob for operating the knob of the switch by changing the direction is provided, and the switch knob is operated from the front surface of the series unit. In this case, the direction of the operating force applied to the switch knob from the front of the series unit is changed and transmitted to the switch knob, but the operating force is applied to the front side of the switch knob, and the switch knob is applied after the switch knob. Therefore, when the operating force is applied to the front side of the switch knob, the rear side moves so as to be dragged by the movement of the front side of the switch knob. Then, since the switch knob moves in an inclined state, there is a problem that friction is generated with the movement of the switch knob and the switch knob cannot be operated smoothly.

  Therefore, an object of the present invention is to provide a series unit in which a switch knob can be operated smoothly even if a switch knob for operating a switch knob is provided.

Series unit according to the present invention is a rectangular parallelepiped shape, a case having a terminal projecting from at least the front, and a changeover switch that is housed in the casing, a window portion in which the changeover switch is faced by the front face of the case A switch knob formed on an adjacent outer surface and disposed from the window portion to the front surface of the case, and capable of operating the changeover switch from the front surface of the case; and along the operation direction of the switch knob, the case of which is a groove is formed on the front surface, upon operating the switch knob from the front surface of the case, the switch knob is the most important feature to continue to slide while being regulated to the groove.
Another series unit according to the present invention has a rectangular parallelepiped shape , a case having a first terminal protruding from an upper surface or a lower surface, a circuit board housed in the case, and a switching provided on the circuit board. The front part of the case can be operated from the front surface of the case provided on the outer surface of the switch adjacent to the front surface of the case, the window part facing the knob of the changeover switch, and the second terminal for output. A switch knob provided to engage the knob of the changeover switch, and a rail groove is formed on the front surface of the case along the operation direction of the switch knob. When a sliding part protruding from the part is inserted into the rail groove and the front part of the switch knob is operated from the front of the case, the sliding part slides while being regulated in the rail groove. It is the most important feature that go.

  In the series unit of the present invention, the sliding part protruding from the front part of the switch knob is inserted into the rail groove formed in the case, and the sliding part is operated when the front part of the switch knob is operated from the front surface of the case. Because the switch slides while being regulated in the rail groove, when the operating force is applied to the front part of the switch knob, the switch knob is unlikely to be inclined due to the action of the rail groove and the sliding part. Can be operated smoothly.

It is the top view, front view, and bottom view which show the structure of the serial unit of the Example of this invention. It is the rear view and side view which show the structure of the serial unit of the Example of this invention. It is the perspective view of the front side which shows the structure of the serial unit of the Example of this invention, and a perspective view of a rear side. It is a bottom view which shows a structure when a switch knob is abbreviate | omitted in the serial unit of the Example of this invention. In the series unit of the Example of this invention, it is a front view which shows a structure when a terminal block is abbreviate | omitted, a side view, and a side view shown with sectional drawing cut | disconnected by the AA line. It is the perspective view which decomposed | disassembled and showed the structure of the serial unit of the Example of this invention, and the perspective view which reversed the top and bottom. It is the front view and bottom view which show the structure of the state which operates a switch knob in the serial unit of the Example of this invention. It is sectional drawing cut | disconnected by CC line which shows the structure of the state which operates a switch knob in the serial unit of the Example of this invention. It is the top view, front view, and bottom view which show the structure of the case in the serial unit of the Example of this invention. It is the rear view which shows the structure of the case in the serial unit of the Example of this invention, a side view, and a side view shown with sectional drawing cut | disconnected by the BB line. It is the perspective view of the front side which shows the structure of the case in the serial unit of the Example of this invention, and a rear perspective view. It is the front view, bottom view, and back view which show the structure of the switch knob in the serial unit of the Example of this invention. It is the side view and bottom view which show the structure of the switch knob in the serial unit of the Example of this invention. It is the front perspective view and the rear perspective view which show the structure of the switch knob in the serial unit of the Example of this invention. It is a rear view, a top view, a front view, a front perspective view, and a rear perspective view showing the configuration of the lid portion in the series unit of the embodiment of the present invention. In the serial unit of the Example of this invention, it is a front view and bottom view which show the structure of the state which operates the switch knob at the time of omitting a rail groove and a sliding part. It is sectional drawing which shows the structure of the state which operates the switch knob at the time of omitting a rail groove and a sliding part in the serial unit of the Example of this invention.

The configuration of the series unit 1 according to the embodiment of the present invention is shown in FIGS. FIG. 1 is a top view, a front view, and a bottom view showing the configuration of the series unit of the embodiment of the present invention, and FIG. 2 is a rear view and a side view showing the configuration of the series unit of the embodiment of the present invention. 3 is a front perspective view and a rear perspective view showing the configuration of the series unit of the embodiment of the present invention, and FIG. 4 shows the configuration when the switch knob is omitted in the series unit of the embodiment of the present invention. It is a bottom view.
As shown in these drawings, the series unit 1 includes a metal case 10 formed by molding, and a resin terminal block 20 formed by molding that is detachably fixed to the front surface of the case 10. Has been. The serial unit 1 is attached so as to be housed in a box embedded in the wall surface. An input terminal 12a is provided on the lower surface of the case 10 so as to protrude. The input terminal 12a is provided with a coaxial cable disposed in the internal space of the wall, and receives a down signal of the CATV system and a digital terrestrial signal received by an antenna. Broadcast or BS / CS digital broadcast reception signals are input to the serial unit 1. A TV terminal 12b is provided on the front surface of the case 10 so as to protrude, and a coaxial cable attached to the TV terminal 12b, which is a coaxial terminal, is connected to a terminal device including a television receiver and a recorder. Since the signal input to the input terminal 12a is output from the TV terminal 12b, the downstream signal of the CATV system output from the TV terminal 12b, the reception of the terrestrial digital broadcast and BS / CS digital broadcast received by the antenna are received. A signal or the like is input to a television receiver or recorder. The uplink signal output from the terminal device is input to the TV terminal 12b.

Here, details of the configuration of the case 10 will be described with reference to FIGS. 9 to 11. 9A, 9B, and 9C are a top view, a front view, and a bottom view showing the configuration of the case 10, and FIGS. 10A, 10B, and 10C are rear views showing the configuration of the case 10. FIGS. 11A and 11B are a front perspective view and a rear perspective view showing the configuration of the case 10, respectively.
A case 10 shown in FIGS. 9 to 11 includes a rectangular parallelepiped case body 11 which is formed by molding a metal and is longer in the horizontal direction than in the vertical direction. A TV terminal 12b, which is a coaxial terminal, is provided so as to protrude forward from the front surface of the case 10. The upper surface of the case main body 11 has an opening 10a. Four bosses 11d are formed on the inner side surface of the case main body 11. A protrusion 11e with a reduced diameter protrudes from the upper surface of the boss 11d. It is formed as follows. As will be described later, the protrusion 11e is fitted into the mounting hole of the circuit board housed in the case body 11, and the circuit board is supported by the boss 11d. An input terminal 12 a that is a coaxial terminal is formed so as to protrude downward from the lower surface of the case body 11.

  A substantially rectangular window portion 11 c is formed on the lower surface of the case body 11. As will be described later, the selector switch provided on the circuit board housed in the case body 11 can be picked from the window portion 11c. This is shown in FIG. A rail portion 11a is formed from the lower end of the front surface of the case body 11 to the lower surface. The rail part 11a is formed at a position corresponding to the window part 11c by notching a corner part from the lower end of the front surface to the lower surface in a rectangular cross section. Is formed. Further, a pair of attachment portions 13 projecting in a plate shape are formed on both sides of the front surface of the case body 11 of the case 10, and the attachment portion 13 has a U-shape in the vertical direction protruding forward. A rectangular protrusion 14 is formed. Due to the rectangular protrusion 14, a rectangular vertically long engagement hole is formed in each of the attachment portions 13. A rectangular portion that protrudes slightly outward is formed from the outer side end of the attachment portion 13, and the series unit 1 can be attached to the dedicated frame using this rectangular portion. When this dedicated frame is attached to the box, the series unit 1 is housed in the box, and the front surface of the box and the front surfaces of the TV terminal 12b and the terminal block 20 are substantially aligned.

  Returning to FIGS. 1 to 4, the knob of the changeover switch 17 shown in FIG. 4 faces the window portion 11 c provided in the case body 11, and the window of the switch 17 can be operated with the switch knob 15. A switch knob 15 is attached to the portion 11c. The switch knob 15 is provided to operate the changeover switch 17 and can be changed over by moving it in the lateral direction. This change-over switch 17 switches the communication mode of the TV terminal 12b between the one-way transmission communication mode in which the upstream signal band is cut and only the downstream signal is passed, and the bidirectional communication mode in which the upstream signal band is also passed. Switch.

Here, details of the configuration of the switch knob 15 will be described with reference to FIGS. 12A, 12B, and 12C are a front view, a bottom view, and a rear view showing the configuration of the switch knob 15. FIGS. 13A and 13B are a front view and a bottom view showing the configuration of the switch knob 15. FIG. FIGS. 14A and 14B are a front perspective view and a rear perspective view showing the configuration of the switch knob 15, respectively.
As shown in these drawings, the switch knob 15 is made of resin formed by molding, and includes a convex upper plate portion 15a having a flat plate shape. A front plate portion 15b is formed on the front side of the upper plate portion 15a so as to stand in a rectangular plate shape in a direction substantially orthogonal to the upper plate portion 15a. A front plate portion 15b is formed on the rear portion of one surface of the upper plate portion 15a. A pair of holding portions 15d and a pair of locking portions 15e projecting in the same direction as the projecting direction are formed. The pair of holding portions 15d have a horizontally long rectangular flat plate shape, are formed to face each other, and are formed so that both side ends slightly protrude toward the facing surface. One of the pair of locking portions 15e is substantially rectangular in cross section, and the other facing the other is from a part having a substantially rectangular cross section and a part protruding from the opposite side of this part on the opposite side of the cross section. It is configured. The knob of the changeover switch 17 is held between the pair of locking portions 15e, and the outer surfaces of the pair of holding portions 15d face the inner surface of the window portion 11c. Further, an operation convex portion 15c having an L-shaped cross section is formed so as to protrude from substantially the center portion of the upper plate portion 15a and the front side plate portion 15b. Further, a sliding portion 15f having a slightly reduced thickness is formed so as to protrude from the lower end of the front side plate portion 15b.

Next, in the series unit 1 according to the present invention, a front view showing a configuration when the terminal block 20 is omitted, a side view, and a side view taken along the line AA are shown in FIGS. ) (C).
As shown in these drawings, the switch knob 15 is clamped between the pair of locking portions 15e, and the switch knob 15 is so arranged that the outer surface of the pair of holding portions 15d faces the inner surface of the window portion 11c. Is attached to the rail portion 11a formed on the case body 11, and the sliding portion 15f formed so as to protrude from the lower end thereof is a rail groove. 11b. As a result, when the switch knob 15 is slid in the lateral direction, the sliding portion 15f slides in the rail groove 11b while being regulated so that the sliding portion 15f is not inclined by the rail groove 11b. The side plate portion 15b slides along the rail portion 11a. As shown in FIG. 5C, a circuit board 16 is accommodated in the case main body 11, and the circuit board 16 is supported in the case main body 11 by a boss 11d and a protrusion 11e in the case main body 11, thereby The ground of the substrate 16 is electrically connected to the case body 11 serving as a shield case. The circuit board 16 is provided with a filter circuit, and when the series unit 1 is provided with a branch terminal, a branch circuit is provided. This filter circuit is a filter that blocks upstream signals and allows downstream signals to pass, and is inserted into the line when switched to the one-way transmission communication mode by the changeover switch 17.

Next, FIGS. 6A and 6B are exploded perspective views showing the configuration of the series unit 1 according to the present invention, and a perspective view with the top and bottom reversed.
As shown in these drawings, the series unit 1 includes a case 10, a switch knob 15, a terminal block 20, and a lid 18. The lid 18 is fitted so as to close the opening 10a of the case main body 11, and the switch knob 15 is fitted into the window 11c of the case main body 11, so that the selector switch 17 is pinched between the pair of locking portions 15e. Is pinched. Further, the terminal block 20 is provided with a base body 21 having a thin rectangular parallelepiped shape and formed with a cylindrical hole through which the TV terminal 12b is inserted substantially at the center. Further, engaging pieces 22 each having a claw portion 22a formed at the tip are formed on both sides of the terminal block 20, respectively. The claw portion 22a is composed of a stepped portion formed on the outer surface of the engagement piece 22 and a tapered portion having a slope that becomes sharper from the stepped portion toward the tip. Since the engagement piece 22 is fixed to the side plate of the base body 21 only at the base opposite to the claw portion 22a, the engagement piece 22 is formed on the side plate of the base body 21 so as to have elasticity. ing. Therefore, when the terminal block 20 is pressed against the front surface of the case 10 while the TV terminal 12b is inserted into the cylindrical hole, the engaging pieces 22 of the both side plates are guided by the claw portions 22a between the pair of rectangular protruding portions 14. The stepped portion of the claw portion 22a is engaged with the rectangular vertically long engagement hole formed by the rectangular protruding portion 14 while being inserted. As a result, the terminal block 20 is fixed to the front surface of the case 10.

Here, a detailed configuration of the lid portion 18 fitted into the opening 10a of the case body 11 is shown in FIG. 15A, 15B, 15C, 15D, and 15E are a rear view, a top view, a front view, a front perspective view, and a rear perspective view showing the configuration of the lid portion 18, respectively.
As shown in these drawings, the lid portion 18 is formed by processing a metal plate, and is formed in the same shape as the opening 10 a of the case body 11. The lid 18 has a substantially rectangular shape, and one corner of the lid 18 located on the front side of the case body 11 has a notch 18 formed as a hypotenuse, and both corners of the lid 18 located on the opposite side. Is rounded. A stepped portion is formed at the upper end of the opening 10a of the case body 11 so that the opening 10a is slightly larger. When the lid 18 is fitted into the opening 10a, the peripheral edge of the lid 18 is engaged with the stepped portion. And become fixed. In this case, you may fix the peripheral part of the cover part 18 to a level | step-difference part with an adhesive agent.

Next, in the series unit 1 according to the present invention, a configuration in which the switch knob 15 is operated is shown in FIGS. FIGS. 7A and 7B are a front view and a bottom view showing a configuration in a state where the switch knob 15 is operated, and FIG. 8 is cut along a line C-C showing a configuration in a state where the switch knob 15 is operated. It is sectional drawing.
As shown in FIGS. 7A and 7B, when the operation convex portion 15c of the switch knob 15 is grasped with a finger and a force is applied in the lateral direction, the switch 17 inserted into the switch knob 15 is picked. The switch 17a is moved according to the movement of the switch knob 15, and the changeover switch 17 is switched to switch the communication mode. For example, the unidirectional transmission communication mode can be switched to the bidirectional communication mode or vice versa. At the time of switching, as shown in FIG. 8, an operating force is applied to the operation convex portion 15 c at the tip of the switch knob 15, and an action portion (a pair of locking portions 15 e) that moves the knob 17 a of the changeover switch 17 Therefore, the position of the action part is away from the position where the operating force is applied. Then, when an operating force for moving in the lateral direction is applied to the operation convex portion 15c, the pair of locking portions 15e that sandwich the knob 17a move so as to be dragged by the movement of the operation convex portion 15c. In this case, the outer side surfaces of the pair of holding portions 15d slide while being regulated so as not to be inclined on the inner side surface of the window portion 11c opened in the case body 11, and the front side plate portion 15b of the switch knob 15 is moved. The rail portion 11a slides while the sliding portion 15f is regulated not to be inclined by the rail groove 11b, and the pair of holding portions 15d, the front side plate portion 15b, and the sliding portion 15f are long in the sliding direction. As a result, the switch knob 15 is prevented from being inclined as much as possible by the action of the window portion 11c and the rail groove 11b. As a result, the switch knob 15 can slide smoothly and the changeover switch 17 can be switched smoothly. .

Here, with reference to FIG. 16 and FIG. 17, the case main body 11 ′ without the rail groove 11b and the switch knob 15 ′ with the sliding portion 15f omitted are shown in FIG. The switching will be described in contrast. 16 (a) and 16 (b) are a front view and a bottom view showing a configuration in which the switch knob 15 ′ is operated when the rail groove 11b and the sliding portion 15f are omitted, and FIG. 17 is a view showing the rail groove 11b and the sliding portion. It is sectional drawing cut | disconnected by the dd line | wire which shows the structure of the state which operates switch knob 15 'when the moving part 15f is abbreviate | omitted.
As shown in FIGS. 16 (a) and 16 (b), when the operation convex portion 15c of the switch knob 15 'is grasped with a finger and a force is applied in the lateral direction, the changeover switch 17 fitted into the switch knob 15' is inserted. The knob 17a is moved in accordance with the movement of the switch knob 15, and the selector switch 17 is switched. When switching, as described above, the position of the action part is away from the position where the operating force is applied. Then, when an operating force for moving in the lateral direction is applied to the operation convex portion 15c, the pair of locking portions 15e that sandwich the knob 17a move so as to be dragged by the movement of the operation convex portion 15c. In this case, the front plate portion 15b ′ of the switch knob 15 ′ is not formed with the sliding portion 15f, and the rail groove 11b is also omitted. Therefore, the front plate portion 15b ′ of the switch knob 15 is restricted. Therefore, as shown in the figure, the pair of locking portions 15e move behind the operation convex portion 15c and the switch knob 15 'is inclined. It comes to become. The outer surfaces of the pair of holding portions 15d slide while being regulated by the inner surface of the window portion 11c opened in the case body 11. However, sufficient regulation force cannot be obtained by this regulation alone, and the operation convexity is obtained. Since the pair of locking portions 15e move later than the portion 15c, the switch knob 15 'is inclined. Then, a part of the front side plate part 15b ′ slides on the inner side surface of the rail part 11a ′ to generate a frictional force, and a part of the outer side surface of the pair of holding parts 15d is opened in the case body 11. The frictional force is generated by sliding contact with the inner surface of the portion 11c, and the switch knob 15 ′ cannot be operated smoothly. Thus, when switching the changeover switch 17, it turns out that the changeover switch 17 cannot be smoothly switched unless at least the sliding portion 15f is regulated so as not to be inclined by the rail groove 11b.

In the series unit according to the present invention described above, an input terminal, a branch terminal for sending a signal to the next-stage series unit, and a TV terminal can be provided. In this case, the branch terminal can be provided on the lower surface of the case body substantially parallel to the input terminal, or can be provided on the upper surface of the case body.
The change-over switch can be operated from the front of the series unit by removing the terminal block from the front of the series unit, and the communication mode can be easily switched. In this case, since the terminal block is fixed to the case with a pair of engaging pieces provided on both side plates, the terminal block can be easily removed from the case by releasing the engagement of the engaging pieces. .

1, 1 'series unit, 10 case, 10a opening, 11, 11' case body, 11a, 11a 'rail part, 11b rail groove, 11c window part, 11d boss, 11e protrusion, 12a input terminal, 12b TV terminal, 13 Mounting part, 14 rectangular protrusion, 15, 15 'switch knob, 15a upper plate part, 15b, 15b' front plate part, 15c operation convex part, 15d holding part, 15e locking part, 15f sliding part, 16 circuit Board, 17 selector switch, 17a knob, 18 notch, 18 lid, 20 terminal block, 21 base body, 22 engagement piece, 22a claw

Claims (5)

It is a rectangular parallelepiped shape, a case having a terminal projecting from at least the front,
A change-over switch housed in the case;
A window part facing the changeover switch is formed on an outer surface adjacent to the front face of the case, and is arranged from the window part to the front face of the case, and a switch knob capable of operating the changeover switch from the front face of the case. Prepared,
Along the operating direction of the switch knob, the a groove is formed on the front surface of the case, upon operating the switch knob from the front surface of the case, while the switch knob is regulated the groove slide A series unit characterized by A case having a rectangular parallelepiped shape and having a first terminal protruding from an upper surface or a lower surface;
A circuit board housed in the case;
A change-over switch provided on the circuit board;
A window portion formed on an outer surface adjacent to the front surface of the case, and facing the knob of the changeover switch;
A switch knob provided so that a front part can be operated from the front surface of the case provided so that a second terminal for output protrudes, and a rear part is engaged with a knob of the changeover switch;
A rail groove is formed on the front surface of the case along the operation direction of the switch knob, and a sliding portion protruding from the front portion of the switch knob is inserted into the rail groove, and the front surface of the case The series unit, wherein when the front part of the switch knob is operated, the sliding part slides while being regulated in the rail groove. The switch knob includes a planar upper plate portion and a front plate portion that stands up from the front portion of the upper plate portion, and a pair of locking portions that sandwich a knob of the changeover switch on one surface of the upper plate portion. Is formed, and an operation convex portion protruding from the front surface of the front plate portion to the upper plate portion is formed,
Wherein the the operating protrusion that operation force is applied, the switch knob is due to be operated to move, the locking portion sandwiched by the knob the changeover switch to move the said changeover switch is switched 3. The series unit according to claim 2 , wherein the series unit is operated. The sliding part is formed by extending from the end of the front side plate part of the switch knob, and the sliding part is inserted into the rail groove formed at the corner of the front surface of the case. The series unit according to claim 3 . The window portion is formed in a substantially rectangular shape , and when the knob of the change-over switch facing the window portion is sandwiched between the pair of locking portions, a pair of holdings whose outer surfaces face the inner side surface of the window portion. A holding part is formed on one surface of the upper plate part,
The said holding | maintenance part slides, being controlled by the inner surface of the said window part, when operating the front part of the said switch knob from the front surface of the said case, The Claim 3 or 4 characterized by the above-mentioned. Series unit.

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