JP4379417B2 - Speaker terminal - Google Patents

Description

  The present invention provides a speaker cable on the front side of the construction surface, which is provided at the entrance / exit of the speaker cable on the construction surface when a part of the speaker cable connecting the audio device such as an amplifier and the speaker is concealed on the back side of the construction surface And a speaker terminal used to electrically connect the speaker cable on the back side of the construction surface.

  Conventionally, as this type of speaker terminal A, as shown in FIG. 16, a speaker terminal A provided with a container 1 that can be attached to a mounting frame (not shown) of an embedded wiring device has been provided. The container body 1 is attached to a wall surface as a construction surface using an attachment frame, and a plurality (four in this case) of terminal portions 3 to which the speaker cable C can be connected are provided on the front surface side of the container body 1. Here, the terminal portion 3 in FIG. 16 adopts a configuration in which the speaker cable C is clamped by tightening a terminal screw so that the speaker cable C can be easily connected. Are arranged in a row.

Further, on the back side of the body 1, in addition to the terminal portion 3, a number of connection portions (not shown) to which speaker cables can be connected (in this case, four pieces) corresponding to the terminal portion 3 are provided. Each terminal part 3 is electrically connected. If this speaker terminal A is used, the speaker cable C is electrically connected to another speaker cable connected to the connection portion inside the wall by connecting the speaker cable C to the terminal portion 3 outside the wall. (For example, see Patent Document 1).
Japanese Utility Model Publication No. 2-43091

  By the way, since the connection of the speaker cable C to the terminal unit 3 is generally performed by the user himself after the installation of the speaker terminal A, in the speaker terminal A as described above, the connection work of the speaker cable C to the terminal unit 3 is performed. The terminal portion 3 is provided so as to protrude from the front surface of the container 1 so that it can be easily performed. As a result, there arises a problem that the terminal portion 3 is easily caught on clothes.

  The present invention has been made in view of the above-described reasons, and the amount of protrusion of the terminal portion from the front surface of the container is small compared to the conventional configuration while the speaker cable is easily connected to the terminal portion. An object is to provide a speaker terminal.

In the first aspect of the present invention, the instrument body attached to the construction surface, the terminal part provided on the front side of the instrument body, each of which can be connected to the speaker cable as a set, and each provided on the rear side of the instrument body In addition to being electrically connected to each of the terminal portions, each has a connection portion to which a speaker cable can be connected separately from the terminal portion, and the body has a housing recess recessed in the front, An inclined surface inclined with respect to the front surface of the container so as to change the depth dimension of the storage recess along one direction along the front surface of the container, and the storage recess in the one direction on the inclined surface The two terminal portions forming a set are orthogonal to the one direction in a plane along the front surface of the vessel body. are arranged on the inclined surface so as to align in the direction, the terminal portions are each cylindrical The shaft is attached to the body in a direction that crosses the inclined surface with the inclined surface, and is screwed into the connecting screw portion with a mandrel in which a connecting screw portion made of a male screw is formed in a portion located in front of the inclined surface. And a cap having a connecting nut portion formed of a female screw, and the mandrel is inclined at the rear end portion of the portion located in front of the inclined surface, and the cable insertion hole into which the front end portion of the speaker cable is inserted And the cap does not cover the cable insertion hole and the position where the cable insertion hole is covered by being rotated in the circumferential direction of the mandrel while the connection nut is screwed into the connection screw. The cable insertion hole is located at a position where the opening on the front end side of the speaker cable is in the housing recess and abuts against the abutting surface when the speaker cable is inserted in the penetration direction. Characterized in that it is the mouth.

According to this configuration, since the terminal portion is disposed on the inclined surface of the storage recess, a part of the terminal portion is stored in the storage recess. The protruding amount of the terminal portion from the front surface of the container is smaller than that of the conventional configuration. Here, since the inclined surface on which the terminal portion is arranged is inclined with respect to the front surface of the container, the speaker terminal is attached to the lower portion of the wall surface while storing a part of the terminal portion in the storage recess in this way. In this case, if the container is attached so that the inclined surface is obliquely upward, the terminal part can be easily seen from obliquely above the container, and the connection work of the speaker cable to the terminal part becomes easy. Moreover, in the terminal part of the said structure, a speaker cable can be connected to a terminal part by inserting a speaker cable in a cable insertion hole, and moving a cap to the position which covers a cable insertion hole. Here, the cable insertion hole is opened at a position where the opening on the distal end side of the speaker cable is in the housing recess and abuts against the contact surface in a state where the speaker cable is inserted in the penetration direction. Therefore, when the speaker cable is inserted into the cable insertion hole from the side where the depth dimension of the storage recess in the one direction is small, the tip of the speaker cable is brought into contact with the contact surface in the storage recess. Can be prevented from going out of the storage recess, and as a result, the speaker cable can be easily connected to the terminal portion.

Both sides of the invention of claim 2, in the invention of claim 1, wherein the device body, along the erected an insulating wall between two of said terminal portion comprising a set, before Ki傾 slope in the one direction and having a guide surface which extends forwardly from the edge on the inner peripheral surface of the receiving recess.

According to this configuration, a short circuit between the speaker cables connected to the two terminal portions that form the set is prevented by the insulating wall. Moreover, the proposal inner surface, it is possible to prevent the out of the housing concavity varies the tip portion of the speaker cable, consequently, connecting operation of the speaker cables to the terminal portion is facilitated.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, a lid is provided that can be opened and closed between a closed position that covers the storage recess and an open position that does not cover the storage recess. To do.

  According to this configuration, dust does not accumulate on the terminal portion by closing the lid. The lid that can be opened and closed here includes a lid that can be attached to and detached from the vessel, in addition to a lid that is provided integrally with the vessel and can be opened and closed.

  According to a fourth aspect of the present invention, there is provided the speaker cable according to the third aspect, wherein the terminal portion is pulled out along the inclined surface from one end portion having a smaller depth dimension of the storage recess in the one direction. It is connectable, and the lid has a lead-out hole through which a speaker cable is inserted at one end of the storage recess having a smaller depth dimension in the one direction at the closed position. To do.

  According to this configuration, the speaker cable is connected to the terminal portion so as to be inserted along the inclined surface from the side where the depth dimension of the storage recess in the one direction is small. The speaker cable can be easily connected to the stored terminal portion. Further, even when the lid is in the closed position, the speaker cable can be connected to the terminal portion by pulling out the speaker cable through the lead-out hole. In addition, when the speaker cable is pulled out along the inclined surface from one end portion of the terminal portion where the depth dimension of the storage recess in the one direction is smaller, the speaker cable is pulled out through the pull-out hole without being bent excessively. be able to.

  According to a fifth aspect of the present invention, in the invention of the third or fourth aspect, the terminal portion can be connected to the speaker cable drawn out from the front end portion in a direction crossing the inclined surface, and the lid body is In the closed position, insertion holes through which the speaker cables are inserted are respectively opened in portions corresponding to the terminal portions.

  According to this configuration, the speaker is connected to the terminal portion so that the speaker cable is inserted from the front end portion of the terminal portion in a direction crossing the inclined surface, so that the speaker is connected to the terminal portion partially accommodated in the storage recess. Cable connection work can be easily performed. Further, even when the lid is in the closed position, the speaker cable can be connected to the terminal portion by pulling out the speaker cable through the insertion hole. Moreover, when the speaker cable is pulled out from the front end portion of the terminal portion in a direction crossing the inclined surface, the speaker cable can be pulled out through the insertion hole without forcibly bending.

  According to a sixth aspect of the present invention, in the first to fifth aspects of the present invention, the container has a tension stop for holding a part of the speaker cable connected to the terminal portion at a part of the front surface. Features.

  According to this configuration, even if tension is applied to the speaker cable connected to the terminal portion, the force is not applied to the terminal portion by the tension stop, so that the speaker cable does not come out of the terminal portion. Further, there is an advantage that damage to the terminal portion is prevented.

According to a seventh aspect of the present invention, in the invention according to any one of the first to sixth aspects, the cable insertion hole extends from the opening on the side where the depth dimension of the storage recess in the penetrating direction is small to the tip of the speaker cable. It is characterized by penetrating along the one direction so that the portion is inserted.

  According to this configuration, the speaker cables respectively connected to the two terminal portions forming the set are all inserted into the cable insertion holes along the one direction. On the other hand, the two terminal portions to be paired are arranged in a direction orthogonal to the one direction in a plane along the front surface of the container body. That is, even if the amount of insertion into the cable insertion hole is too large in the pair of speaker cables connected to the two terminal portions that form a pair and the tip portions of both speaker cables protrude from the terminal portions, the speaker cables are separated from each other. It is difficult to short-circuit because it protrudes in parallel at the position.

The invention according to claim 8 is the invention according to any one of claims 1 to 7 , wherein at least one of the cap and the mandrel is provided with a retaining portion for preventing the cap from coming off with respect to the mandrel. It is characterized by.

  According to this configuration, since the cap does not fall off from the mandrel, there is an effect that it is possible to prevent an accident such as a child accidentally swallowing a cap that has been removed from the mandrel.

According to a ninth aspect of the present invention, in the invention according to any one of the first to eighth aspects, the outer diameter of the mandrel is located in front of the connecting screw portion in a portion located in front of the inclined surface. The present invention is characterized in that it comprises an idle portion that is smaller than the screw portion and has a larger axial dimension than the connecting nut portion.

  According to this configuration, when the cap is rotated and moved to a position where the cable insertion hole is not covered, the cap rotates idly with respect to the mandrel if the connecting nut portion moves to the idling portion. It can prevent that the force to rotate acts on a connection nut part and a container, and a connection nut part and a container deform | transform.

According to a tenth aspect of the present invention, in the invention according to any one of the first to ninth aspects, the container has at least one opening in the penetration direction in the cable insertion hole on the inner peripheral surface of the storage recess. It has a mirror surface that projects forward.

  According to this configuration, since at least one opening of the cable insertion hole can be viewed from the front of the body through the mirror surface, the speaker terminal is located at a position where it is difficult to directly view the opening of the cable insertion hole. Even if it is installed, the user can insert the speaker cable into the cable insertion hole while looking at at least one opening of the cable insertion hole, and can easily connect the speaker cable. The mirror surface includes not only those formed by attaching a mirror to the container, but also those formed directly on a part of the container by vapor deposition or the like.

According to an eleventh aspect of the present invention, in the invention according to any one of the first to tenth aspects, an outer diameter of the mandrel is for connection at a rear portion of the connecting screw portion at a portion positioned in front of the inclined surface. It is smaller than the screw part, and is provided with a cable winding part around which the speaker cable is wound.

  According to this configuration, when the speaker cable is connected to the terminal portion, the portion of the speaker cable that has been stripped can be wound around the cable winding portion, thereby increasing the contact area between the terminal portion and the speaker cable. Thus, the contact resistance between the terminal portion and the speaker cable can be reduced.

  In the present invention, since the terminal portion is disposed on the inclined surface of the storage recess, a part of the terminal portion is stored in the storage recess, so that the protruding amount of the terminal portion from the front surface of the container body is compared with the conventional configuration. Become smaller. Here, since the inclined surface on which the terminal portion is arranged is inclined with respect to the front surface of the container, the speaker terminal is attached to the lower portion of the wall surface while storing a part of the terminal portion in the storage recess in this way. In this case, if the container is mounted so that the inclined surface is obliquely upward, the terminal part can be easily seen from obliquely above the container, and there is an advantage that the work of connecting the speaker cable to the terminal part becomes easy.

(Embodiment 1)
As shown in FIG. 2, the speaker terminal A of the present embodiment includes a container 1 made of a synthetic resin and formed in a box shape with the rear opened. Below, the upper and lower sides and right and left of FIG. 1A which shows the state which attached the speaker terminal A to the wall surface B in the form which makes the front-end part of the container 1 protrude from the wall surface B (construction surface) are demonstrated as upper and lower left and right.

  A plurality of sets of two terminal portions 3 are provided on the front side of the vessel body 1, and a plurality of connection portions 4 are provided on the back side of the vessel body 1 as in the case of the terminal portions 3. A set is provided. Here, the speaker (not shown) has “+” and “−” polarities, and one speaker and an acoustic device (not shown) such as an amplifier have different polarities (“+” and “−”). − ”) Is connected by a pair of speaker cables C (see FIG. 16A). In the present embodiment, four terminal portions 3 and four connection portions 4 (2) correspond to one pair of left and right speakers. Set). A pair of speaker cables C are connected to each set of terminal portions 3 (or connection portions 4). Further, a lid 5 described later is detachably attached to the front side of the container body 1.

  Each terminal portion 3 includes a cylindrical mandrel 6 and a bottomed cylindrical cap 7. A cable insertion hole 8 penetrating in the diametrical direction is formed in the central portion of the mandrel 6 in the axial direction, and fixing for fixing the mandrel 6 to the body 1 is performed on one end side (rear end side) of the mandrel 6 in the axial direction. A threaded portion 9 is formed. Between the fixing screw portion 9 and the cable insertion hole 8, a flange portion 10 having an outer diameter comparable to that of the cap 7 is formed. A fixing screw portion 9 is inserted into a long terminal fixing hole 11 penetrating through the body 1 and screwed into a nut 14 through a terminal connecting hole 13 penetrating through a connecting plate 12 described later. Thus, the mandrel 6 is fixed to the container body 1 in such a manner that the peripheral portion of the terminal fixing hole 11 in the container body 1 is sandwiched between the connecting plate 12 and the flange portion 10. Here, when the fitting projection 19 projecting from one surface of the flange portion 10 on the fixing screw portion 9 side is fitted into the terminal fixing hole 11, the terminal portion 3 is prevented from rotating. The terminal part 3 is fixed to the container 1 in such a direction that the cable insertion hole 8 penetrates in the vertical direction.

  Further, a screw groove is formed on the inner peripheral surface of the cap 7, and a connecting screw portion 15 that is screwed with the cap 7 is formed on the other end side (front end side) of the mandrel 6 in the axial direction. When the cap 7 is tightened with respect to the connecting screw portion 15, the cable insertion hole 8 is closed by the cap 7. With this configuration, the terminal portion 3 can mechanically hold and electrically connect the speaker cable C by tightening the cap 7 with the tip portion of the speaker cable C inserted into the cable insertion hole 8. . Here, in order to keep the contact resistance between the terminal portion 3 and the speaker cable C relatively small, it is necessary to sufficiently tighten the cap 7. In the present embodiment, the cap 7 having a relatively large outer diameter is adopted so that the cap 7 can be sufficiently tightened even with a small force, and the diametrical direction is extended to the bottom surface of the cap 7 (the front end surface of the terminal portion 3). By providing the tightening groove 16, the cap 7 can be tightened using a coin, a flat-blade screwdriver, or the like. The tightening groove 16 may have another shape (for example, a cross shape).

  The terminal portion 3 of the present embodiment is not limited to the speaker cable C inserted into the cable insertion hole 8 as described above, but is connected to the speaker cable C having a so-called banana plug (not shown). You can also As a configuration for this purpose, a plug holding hole 17 for holding a banana plug is opened at the center of the mandrel 6 along the axial direction, and a plug insertion hole 18 is provided through the bottom surface of the cap 7. Accordingly, the speaker cable C is connected to the terminal portion 3 by inserting the banana plug into the plug holding hole 17 from the front end surface of the terminal portion 3 through the plug insertion hole 18 with the cap 7 screwed to the mandrel 6. Can do.

  On the other hand, each connection part 4 is comprised with the connection board 12 and the terminal screw 20 which were mentioned above, respectively. A screw hole 21 into which the terminal screw 20 is screwed is formed in the connection plate 12, and a speaker cable can be connected to the screw hole 21 by tightening the terminal screw 20 from the rear. The terminal connection hole 13 described above is provided below the screw hole 21 in the connection plate 12, and the terminal portion 3 and the connection portion 4 are nuts through which the fixing screw portion 9 of the mandrel 6 passes through the terminal connection hole 13. By being screwed to 14, electrical connection is made.

  By the way, in the speaker terminal A of the present embodiment, two storage recesses 22 each opened in a rectangular shape that is long in the left-right direction are arranged in a row along the vertical direction (longitudinal direction of the body 1). Has been. Each of the storage recesses 22 extends from the lower end edge of the opening surface and inclines with respect to the front surface of the container 1 so as to recede upward, and the storage recess 22 extends from the upper end edge of the opening surface and recedes downward. In this manner, the contact surface 24 is inclined with respect to the front surface of the container body 1 and a pair of guide surfaces 25 that extend rearward from the left and right end edges of the opening surface and face each other. The terminal fixing hole 11 described above is provided through the inclined surface 23. That is, the terminal portion 3 is disposed on the inclined surface 23.

  Here, two terminal fixing holes 11 are formed in each inclined surface 23 so that one set of terminal portions 3 is arranged on each inclined surface 23. The two terminal portions 3 of each set are marked in accordance with the polarity to be connected so that the speaker cable C connected to the terminal portion 3 and the speaker cable connected to the connection portion 4 can be easily aligned. It is desirable to add. For example, what is necessary is just to color in a different color for every polarity which makes each terminal part 3 a connection object. The two terminal fixing holes 11 are juxtaposed in the left-right direction so that the two terminal portions 3 are arranged in the left-right direction on each inclined surface 23. Here, since the penetration direction of the cable insertion hole 8 is aligned in the vertical direction as described above, the pair of speaker cables C connected to the terminal portions 3 arranged in the horizontal direction are both inserted in the vertical direction. It will be inserted into the hole 8. That is, even if the amount of insertion into the cable insertion hole 8 in the pair of speaker cables C is too large and the tip portions of both speaker cables C protrude from the terminal portion 3, both speaker cables C are in the same direction. Since it protrudes from 3, it is difficult to short-circuit. Furthermore, an insulating wall 26 is provided between the two terminal fixing holes 11 to prevent a short circuit between the speaker cables C having different polarities. A partition wall 27 that divides the internal space of the container body 1 in the left-right direction is also provided on the back side of the container body 1, and each set of connection portions 4 is disposed across the partition wall 27. This prevents short-circuiting between speaker cables of different polarities.

  According to the above-described configuration, the terminal portion 3 is arranged on the inclined surface 23 as shown in FIG. Since it protrudes diagonally, even if it provides the terminal part 3 of the same magnitude | size as a conventional structure, the protrusion amount of the terminal part 3 from the front surface of the container 1 becomes small compared with the conventional structure. Here, since the inclined surface 23 is inclined obliquely upward, the speaker terminal A is attached to the lower portion of the wall surface B while storing a part of the terminal portion 3 in the storage recess 22 in this manner. The terminal part 3 can be easily seen from diagonally above the body 1, and the connection work of the speaker cable C to the terminal part 3 is easy. Furthermore, since the depth dimension of the storage recess 22 is small below the terminal portion 3, the terminal portion 3 is a clamping terminal for connecting the speaker cable C to the base end portion (cable insertion hole 8) as in the present embodiment. Even if it exists, by connecting so that the speaker cable C may be inserted along the inclined surface 23 from the lower part of the terminal part 3, the connection operation | work of the speaker cable C can be performed easily.

  In addition, the cable insertion hole in the terminal portion 3 is formed at a position where at least the upper opening is accommodated in the storage recess 22, so that when the speaker cable C is connected to the terminal portion 3, the speaker cable If C is inserted into the cable insertion hole 8 from below the terminal portion 3, the tip end portion of the speaker cable C projects into the housing recess 22 from the upper opening of the cable insertion hole 8. Therefore, when the speaker cable C is connected to the terminal portion 3, the tip of the speaker cable C inserted into the cable insertion hole 8 from below the terminal portion 3 is brought into contact with the contact surface 24. On the other hand, the speaker cable can be inserted without excess and deficiency, and furthermore, it is possible to prevent the tip end portion of the speaker cable C from being scattered by the guide surface 25 and coming out of the storage recess 22, so that the speaker to the terminal portion 3 Connection work of the cable C becomes easier.

  By the way, the speaker terminal A of this embodiment is attached to the wall surface B using the attachment frame 38 (refer FIG.4 (b)) similarly to the generally known wiring type wiring instrument. The body 1 is formed to have a size in which three module-sized wiring devices are arranged in the vertical direction, and can be attached to a mounting frame 38 to which three module-sized wiring devices can be mounted. . Mounting claws 2 that engage with the mounting frame 38 protrude from the left and right side surfaces of the body 1, and the body 1 is attached to the mounting frame 38 by engaging the mounting claws 2 with the mounting frame 38. Will be. In FIG. 1, the container 1 is attached to the wall surface B by fixing the attachment frame 38 to the switch box 39 provided in the wall using a box screw 40 (see FIG. 4B). The plate frame 41 surrounding the front surface of the container body 1 is attached to the mounting frame 38 using a plate screw 42 (see FIG. 4B), and the opening of the plate frame 41 and the front surface of the container body 1 are connected. A decorative cover 43 covering the gap is attached to the plate frame 41.

  Further, according to the configuration of the present embodiment, the following problems that may occur in the conventional configuration shown in FIG. 16 are solved.

  In the conventional configuration shown in FIG. 16, a plurality of terminal portions 3 are all arranged in a line in the vertical direction, and the speaker cable C connected to the terminal portion 3 is pulled out in the left-right direction (horizontal direction). Therefore, in the conventional configuration, as shown in FIG. 16A, the speaker cable C pulled out from the terminal portion 3 is bent downward by gravity, so that the speaker cable C is bent unreasonably, and the speaker cable C is transmitted. May affect properties. As shown in FIG. 16A, when another wiring device D such as an outlet is provided adjacent to the speaker terminal A, the speaker cable C is pulled out in front of the wiring device D, and the wiring device D It gets in the way when using. Further, when the speaker cable C connected to the terminal unit 3 is routed downward, the speaker cable C connected to the upper terminal unit 3 is required to be longer, but in the conventional configuration, all the terminal units 3 are arranged in the vertical direction. Therefore, the length of the speaker cable C differs depending on the polarity, which may affect the transmission characteristics of the speaker cable C. Furthermore, it is difficult to understand the combination of the terminal portions 3 to which the pair of speaker cables C connected to each speaker is to be connected, and the polarities of the speaker cables C connected to the terminal portions 3 and the speaker cables connected to the connection portions are determined. There is also a problem that it is difficult to match.

  On the other hand, in this embodiment, the speaker cable C can be pulled out substantially straight from the terminal portion 3 by connecting the speaker cable C to the terminal portion 3 so as to be drawn below the terminal portion 3. Therefore, the speaker cable C will not be bent excessively, and even if another wiring device D is provided adjacent to the speaker terminal A, the speaker cable C will not interfere with the use of the wiring device D. . Moreover, in this embodiment, since the two terminal parts 3 which connect a pair of speaker cable C are located in the left-right direction, the length of the speaker cable C does not differ for every polarity like the conventional structure. Furthermore, since two sets of the terminal portions 3 are provided as one set on each inclined surface 23, the combination of the terminal portions 3 to which the pair of speaker cables C connected to each speaker should be connected, and If the polarities of the speaker cables C to be connected are unified in the terminal portions 3 arranged in the vertical direction, the polarities of the speaker cables C connected to the terminal portions 3 and the speaker cables connected to the connection portions 4 can be easily matched.

  By the way, the lid 5 described above has an open rear surface, and as shown in FIG. 3A, the holding holes 29 provided in the lid 5 with holding claws 28 respectively protruding from the four corners of the front surface of the vessel 1. (Refer to FIG. 2 (b)). Here, the holding claw 28 and the holding hole 29 are configured to be engaged by pressing the lid 5 against the body 1 from the front, but are engaged by sliding the lid 5 along the front surface of the body 1. It is good also as composition to do. As shown in FIG. 4, the cover body 5 attached to the container body 1 covers both the housing recesses 22, thereby preventing dust from accumulating on the terminal portion 3. In the present embodiment, the lid body 5 is detachable from the container body 1, but the lid body 5 can be opened and closed between a position covering the storage recess 22 (closed position) and a position not covering (open position). As shown in FIG. 3 (b), the lid 5 can be opened and closed without being removed from the body 1 by adopting a configuration in which the upper edge of the lid 5 is pivotally supported by the pair of holding claws 28. It may be possible.

  Further, in the present embodiment, even when the lid body 5 is attached to the container body 1, the rear end of the lid body 5 is rearward so that the speaker cable C connected to the terminal portion 3 can be pulled out downward. A lead-out hole 30 opened to the top is opened. However, in the case where the lid 5 is attached only when the speaker terminal A is not used, the drawer hole 30 may be omitted.

  Moreover, as shown in FIG. 5, it is desirable to provide the tension | tensile_strength stop 31 which hold | maintains the speaker cable C connected to the terminal part 3, as shown in FIG. In this configuration, since the speaker cable C connected to the terminal portion 3 is held by the tension stopper 31, even if tension is applied to the speaker cable C, no force is exerted on the terminal portion 3 by the tension stopper 31. The speaker cable C does not come out of the terminal portion 3, and further damage to the terminal portion 3 is prevented.

  In this embodiment, two sets of terminal portions 3 and connection portions 4 are provided so as to correspond to one pair of left and right speakers, but the terminal portion 3 and connection portion 4 are provided so as to correspond to one speaker. Only one set may be provided (see FIGS. 12 and 13), or the number of sets of the terminal portion 3 and the connection portion 4 may be increased so as to correspond to a large number of speakers. Are formed in a number corresponding to the number of sets of the terminal portions 3 and the connection portions 4. Further, the number of the terminal portions 3 in one set matches the number of speaker cables C to be connected to one speaker. If three speaker cables C are connected to one speaker, one set of three. The terminal portion 3 is provided. A set of four terminal portions 3 may be provided, and the set of terminal portions 3 may correspond to two speakers.

(Embodiment 2)
The speaker terminal A of the present embodiment is different from the speaker terminal A of the first embodiment in the shape of the lid 5. In the present embodiment, in order to allow the speaker cable C having a banana plug to be connected to the terminal portion 3 even when the lid 5 is attached to the container body 1, as shown in FIG. In addition, an insertion hole 32 is opened in each part of the lid 5 corresponding to the terminal portion 3. In FIG. 6, one insertion hole 32 is opened for one set of terminal portions 3.

  When the speaker cable C having a banana plug is connected to the terminal portion 3, the speaker cable C is drawn out in a direction crossing the inclined surface 23 through the insertion hole 32. However, when the speaker cable C is connected using the cable insertion hole 8, the speaker cable C can be pulled out from the extraction hole 30, and the insertion hole 32 is not used. Therefore, the insertion hole 32 is opened when the speaker terminal A is manufactured. Instead, it is desirable to form a knockout portion in the lid 5 so that the user of the speaker terminal A can easily open the insertion hole 32 as necessary. Other configurations and functions are the same as those of the first embodiment.

(Embodiment 3)
The speaker terminal A of the present embodiment is different from the speaker terminal A of the first embodiment in the configuration of the lid 5. As shown in FIG. 7, the lid body 5 of the present embodiment is a flat plate, and includes a door body 33 that can be opened and closed between a position that covers the storage recess 22 (closed position) and a position that does not cover (open position). Have. Here, since the door body 33 cannot be closed if the terminal portion 3 protrudes forward from the door body 33, in this embodiment, the terminal portion 3 does not protrude from the wall surface B as compared with the first embodiment. A structure in which the container body 1 is moved backward, a peripheral wall 34 protruding forward from the entire circumference of the front surface of the container body 1 is provided as a part of the lid body 5, and the front surface of the container body 1 is covered by the peripheral wall 34 and the door body 33. Yes. Moreover, in this embodiment, when the door body 33 is opened, the door body 33 can be stored in the wall from a slit (not shown) provided at the upper end of the container body 1 as shown in FIG. .

  According to the configuration of the present embodiment, the protruding amount from the wall surface B of the entire speaker terminal A including the lid 5 can be made relatively small. Further, since the door body 33 can be stored in the wall when the door body 33 is opened, there is an advantage that the protruding amount of the speaker terminal A from the wall surface B does not increase even when the door body 33 is opened. In addition, the slit for accommodating the door body 33 in a wall can also be provided not only in the upper end part of the container 1, but in the one end part of the left-right direction in the container 1, for example. Other configurations and functions are the same as those of the first embodiment.

( Reference Example 1 )
The speaker terminal A of this configuration example is different from the speaker terminal A of the first embodiment in the configuration of the terminal portion 3. In this configuration example , as shown in FIG. 8, one set of terminal portions 3 is provided for one housing 35 arranged on the inclined surface 23.

  As shown in FIG. 8, each terminal portion 3 connects a speaker cable C inserted from a cable connection port 36 opened in the housing 35, and the cable connection port 36 is provided on the lower surface of the housing 35. It is closed by a terminal board (not shown) that is opened by pushing the lever 37. The terminal board is biased to a position where the cable connection port 36 is closed. That is, the speaker cable C can be connected to the terminal portion 3 by a simple operation of inserting the tip end portion of the speaker cable C into the cable connection port 36 while pushing the lever 37.

Also in the configuration of this configuration example , the same effect as that of the first embodiment can be expected by providing the housing 35 of the terminal portion 3 on the inclined surface 23. However, the speaker cable C connected to the terminal portion 3 is drawn out in a direction crossing the inclined surface 23, similarly to the speaker cable C having the banana plug described in the second embodiment. Therefore, when the lid 5 is added to the container 1 of this configuration example , it is desirable to use the lid 5 having the insertion hole 32 opened as in FIG. 6 shown in the second embodiment. Other configurations and functions are the same as those of the first embodiment.

( Embodiment 4 )
The speaker terminal A of the present embodiment is different from the speaker terminal A of the first embodiment in the details of the container 1 and the configuration of the terminal portion 3.

  Below, the difference with the speaker terminal A of Embodiment 1 regarding the container 1 is demonstrated first.

  As shown in FIG. 9, the attachment frame 38 to which the container body 1 of the present embodiment is attached includes a rectangular frame-shaped frame body 44 and holding pieces 45 that protrude backward from the left and right sides of the frame body 44. The holding piece 45 is formed by penetrating a rectangular attachment hole. On the other hand, the housing body 1 is provided with mounting protrusions 46 on both left and right side surfaces, and is attached to the mounting frame 38 by fitting the mounting protrusions 46 into mounting holes. As in the first embodiment, a plate frame 41 surrounding the periphery of the front surface of the container 1 is attached to the attachment frame 38 using plate screws 42 (see FIG. 4B). 43 is attached, but in this embodiment, a cover body 47 is further provided to fill a gap between the decorative cover 43 and the front surface of the container body 1. The cover body 47 has a rectangular frame shape, and hooking claws 48 (see FIG. 11) projecting rearward from both upper and lower sides are inserted into hook holes 49 (see FIG. 11) provided on both upper and lower end surfaces of the container body 1. It is attached to the container body 1 by engaging.

  In addition, holding holes 50 are respectively provided in the four corners of the front surface of the vessel body 1, and the lid body 5 is formed from each part corresponding to each holding hole 50 in the lid body 5 as shown in FIG. 10. The holding claw 51 protruding rearward is engaged with the holding hole 50 so as to be detachably attached to the body 1. The lid body 5 used in the present embodiment is transparent, which has an advantage that the connection state of the speaker cable C to the terminal portion 3 can be visually recognized even when the lid body 5 is in the closed position.

  The point which the back cover 52 which covers the back side of the container 1 is provided also differs from the speaker terminal of Embodiment 1. However, since the speaker cable C is connected to the connection portion 3 on the back side of the container 1, the back cover 52 does not interfere with the connection of the speaker cable C so that the connection portion 4 is not connected to the connection plate 12. It is formed in a shape that exposes a portion to be configured (that is, the vicinity of the screw hole 21). At the left and right side edges of the back cover 52, mounting protrusions 53 are projected, and the mounting protrusions 53 are fitted into mounting holes 54 penetrating the left and right side walls on the back side of the body 1. Thus, the back cover 52 is attached to the container 1. Moreover, in this embodiment, the insulation distance between the connection parts 4 of different polarity is enlarged by providing the two partition walls 27 facing the left-right direction between the connection parts 4 of different polarity. Further, by providing a spring washer 55 between the connection plate 12 and the nut 14, loosening of the nut 14 is prevented.

  By the way, the shape of the storage recess 22 is also different from that of the speaker terminal A of the first embodiment, and each storage recess 22 of the present embodiment has a contact surface 24 as shown in FIG. It is formed in the curved surface shape curved along the outer periphery shape. Further, the contact surface 24 extends from the inclined surface 23 only to a position facing the opening on the upper side of the cable insertion hole 8 of the terminal portion 3, and from the front end edge of the contact surface 24, the front surface of the body 1. Is extended upward, and an upper inclined surface 57 inclined upward with respect to the front surface of the container 1 is extended upward so as to recede downward from the upper end edge of the extended surface 56. That is, a gap 58 proportional to the vertical dimension of the extended surface 56 is formed between the upper inclined surface 57 and the terminal portion 3 as shown in FIG.

  With the configuration described above, when the speaker cable C is connected to the terminal portion 3, the tip of the speaker cable C inserted into the cable insertion hole 8 from below the terminal portion 3 is placed on the contact surface 24 provided around the terminal portion 3. By making contact, the speaker cable C can be inserted into the cable insertion hole 8 without excess or deficiency, and a gap 58 is formed between the upper inclined surface 57 and the terminal portion 3, and FIG. As shown in FIG. 5, it becomes easy to visually recognize the opening on the upper side of the cable insertion hole 8 from the gap 58. If the opening on the upper side of the speaker cable C can be visually recognized in this way, it is possible to visually recognize how much the speaker cable C inserted from the lower side of the terminal portion 3 is inserted, so that the speaker cable C can be connected more easily. Can do.

  However, when the speaker terminal A is installed at a position where it is difficult to directly view the opening of the cable insertion hole 8 through the gap 58, for example, a position where the user must look up, such as near the ceiling of the wall surface B. As shown in FIG. 13, a mirror surface 59 is formed on the upper inclined surface 57, and the upper opening portion of the cable insertion hole 8 is projected to the front of the container body 1 by this mirror surface 59, thereby allowing the cable to pass through the mirror surface 59. It is desirable that the opening of the insertion hole 8 be visible from the front of the vessel 1. In this configuration, even if it is difficult for the user to directly view the opening of the cable insertion hole 8 through the gap 58, the user can visually recognize the opening on the upper side of the cable insertion hole 8 on the mirror surface 59. Therefore, the connection work of the speaker cable C can be easily performed. The mirror surface 59 includes not only those formed by attaching a mirror to the container 1 but also those formed directly on a part of the container 1 by vapor deposition or the like.

  Next, the difference between the terminal portion 3 and the speaker terminal A of the first embodiment will be described.

  As shown in FIG. 14A, the terminal portion 3 of the present embodiment has a groove 60 formed in a part of the cap 7 over the entire circumference of the outer peripheral edge. The groove 60 is made of synthetic rubber. An annular fitting member 61 (see FIG. 12) is fitted. The fitting member 61 is colored in a different color for each polarity to be connected to each terminal portion 3, and becomes a mark that matches the polarity to be connected in the terminal portion 3 described in the first embodiment.

  Furthermore, in Embodiment 1, the thread groove was formed in the whole area of the inner peripheral surface of the cap 7, but in this embodiment, as shown to Fig.14 (a), only the rear-end part of the inner peripheral surface of the cap 7 is provided. A thread groove is formed. That is, the connecting nut portion 62 formed of an internal thread that is screwed into the connecting screw portion 15 is provided only at the rear end portion of the cap 7. On the other hand, in the mandrel 6, as shown in FIG. 14B, a retaining portion 63 having an inner diameter larger than the inner diameter of the connecting nut portion 62 is formed at the front end portion. According to this configuration, when the cap 7 is loosened and moved forward, the connecting nut portion 62 does not get over the retaining portion 63, so that the cap 7 is prevented from coming off from the mandrel 6. become. If the cap 7 does not come off from the mandrel 6 in this way, it is possible to prevent an accident such as a child accidentally swallowing the cap 7 detached from the mandrel 6.

  Further, when the cap 7 is loosened and the connecting nut portion 62 is in contact with the retaining portion 63 and further rotated in the direction to loosen the cap 7, the contact portion of the connecting nut portion 62 with the retaining portion 63 is deformed. This may make it difficult for the connecting nut portion 62 to be screwed into the connecting screw portion 15. Furthermore, when a force in the direction of loosening the cap 7 acts on the mandrel 6, there is a possibility that the contact portion with the mandrel 6 (the peripheral portion of the terminal fixing hole 11) in the container 1 may be deformed. Therefore, in the present embodiment, no screw is cut between the connecting screw portion 15 and the retaining portion 63 in the mandrel 6, the outer diameter is smaller than the connecting screw portion 15, and the axial dimension is for connecting. An idle part 64 larger than the nut part 62 is formed. With this configuration, when the connecting nut part 62 moves to the idle part 64 when the cap 7 is loosened and moved forward, the cap 7 idles with respect to the mandrel 6. The above-mentioned problem that the container 1 is deformed can be solved. Other configurations and functions are the same as those of the first embodiment.

  Further, when the speaker cable C is connected to the speaker terminal A adopting the terminal portion 3 composed of the mandrel 6 and the cap 7 as shown in the above-described first, second, third, and fifth embodiments, The contact area between the terminal portion 3 and the speaker cable C can be increased and the contact resistance between the speaker cable C and the terminal portion 3 can be reduced by winding the end portion of the speaker cable C that is peeled off. Conceivable. Therefore, in each of the above embodiments, as shown in FIG. 15A, a cable winding portion 65 having an outer diameter smaller than that of the connecting screw portion 15 is provided between the flange portion 10 and the connecting screw portion 15 in the mandrel 6. When the speaker cable C is formed and wound, the speaker cable C is wound around the cable winding portion 65. Here, as shown in FIG. 15B, if the connecting screw portion 15 is formed up to the front end edge of the flange portion 10 in the mandrel 6, the speaker cable C must be wound around the connecting screw portion 15. However, since the connecting screw portion 16 has a larger outer diameter than the cable winding portion 65 by the amount of the screw thread, the speaker cable C that is wound when the cap 7 is tightened is connected to the cap 7 by the amount of the screw thread. It may protrude from between the part 10. Further, in the configuration of FIG. 15B, when the cap 7 is tightened, there is a possibility that the wound speaker cable C varies and is disconnected between the connecting nut portion 62 and the connecting screw portion 15. is there. That is, the configuration provided with the cable winding portion 65 has an advantage that these problems that occur when the speaker cable C is wound can be solved.

BRIEF DESCRIPTION OF THE DRAWINGS The structure of Embodiment 1 of this invention is shown, (a) is a front view, (b) is a side view, (c) is a perspective view. The speaker terminal same as the above is shown, (a) is an exploded perspective view seen from the front side, and (b) is an exploded perspective view seen from the back side. (A) is a perspective view which shows a structure same as the above, (b) is a perspective view which shows the other structural example same as the above. The structure same as the above is shown, (a) is a front view, (b) is an XX sectional view of (a), and (c) is a perspective view. The other example of a structure same as the above is shown, (a) is a perspective view of the state which removed the cover body, (b) is a perspective view of the state which attached the cover body. The structure of Embodiment 2 of this invention is shown, (a) is a front view, (b) is XX sectional drawing of (a), (c) is a perspective view. The structure of Embodiment 3 of this invention is shown, (a) is a perspective view of the state which closed the door body, (b) is a perspective view of the state which opened the door body, (c) is the state which accommodated the door body. It is a perspective view. It is a front view which shows the structure of the reference example 1 of this invention. The structure of Embodiment 4 of this invention is shown, (a) is a front view, (b) is a side view, (c) is a perspective view. The speaker terminal same as the above is shown, (a) is an exploded perspective view seen from the front side, and (b) is an exploded perspective view seen from the back side. It is sectional drawing which shows a structure same as the above. It is a perspective view which shows a structure same as the above. It is a perspective view which shows the other structure same as the above. The terminal part used for the same is shown, (a) is a plan view, (b) is a cross-sectional view. (A) is a top view which shows the terminal part used for the same as the above, (b) is a top view which shows the terminal part of another structure. A prior art example is shown, (a) is a front view, (b) is a side view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Container 3 Terminal part 4 Connection part 5 Cover body 6 Mandrel 7 Cap 8 Cable insertion hole 15 Connection screw part 22 Storage recess 23 Inclined surface 24 Abutting surface 25 Guide surface 26 Insulating wall 30 Pull-out hole 31 Tension stop 32 Insertion Hole 59 Mirror surface 62 Nut portion for connection 63 Detachment portion 64 Idle portion 65 Cable winding portion A Speaker terminal B Wall surface (construction surface)
C Speaker cable

Claims (11)

An instrument mounted on the construction surface, a terminal part provided on the front side of the instrument body, and a terminal part to which a speaker cable can be connected as a set, and a terminal part provided on the back side of the instrument body to each terminal part electrically In addition to the terminal portion, each of the device has a connection portion to which a speaker cable can be connected, and the body has a housing recess recessed in the front, and the inner wall of the housing recess has An inclined surface that is inclined with respect to the front surface of the container so as to change the depth dimension of the storage recess along one direction along the front surface, and the side where the depth dimension of the storage recess in the one direction is large on the inclined surface The two terminal portions that form a pair are inclined surfaces so as to be aligned in a direction perpendicular to the one direction in a plane along the front surface of the container body. are arranged, each terminal portion inclined axially formed in each cylindrical A mandrel that is attached to the body in a direction that intersects the body and that has a connecting screw portion made of a male screw formed in a portion that is located in front of the inclined surface, and a connecting nut portion that has a female screw that is screwed into the connecting screw portion The mandrel has a cable insertion hole through which the front end portion of the speaker cable is inserted along the inclined surface at the rear end of the portion located in front of the inclined surface. The cap moves between a position covering the cable insertion hole and a position not covering the cable insertion hole by being rotated in the circumferential direction of the mandrel while the connection nut portion is screwed to the connection screw portion. , the cable insertion holes, especially that it is open to a position opening the front end side of the speaker cable with the speaker cables are inserted in the through direction are butted be within the housing concavity and abutment surface Speaker terminal to be. The device body, wherein the erected insulating walls between two of said terminal portion comprising a pair, a front guide surface from both side edges extending in the front along the direction in Ki傾 slopes housing The speaker terminal according to claim 1, wherein the speaker terminal is provided on an inner peripheral surface of the recess.   3. The speaker terminal according to claim 1, further comprising a lid that can be opened and closed between a closed position that covers the storage recess and an open position that does not cover the storage recess.   The terminal portion is connectable to the speaker cable drawn out along the inclined surface from one end portion having a smaller depth dimension of the storage recess in the one direction, and the lid body is in the closed position. 4. The speaker terminal according to claim 3, wherein a lead-out hole through which the speaker cable is inserted is opened at one end of the storage recess having a smaller depth dimension in the one direction.   The terminal portion is connectable to the speaker cable drawn out from a front end portion in a direction intersecting the inclined surface, and the lid body inserts the speaker cable into each portion corresponding to the terminal portion at the closed position. The speaker terminal according to claim 3 or 4, wherein each of the insertion holes is opened.   6. The device according to claim 1, wherein the container body has a tension stopper that holds a part of the speaker cable connected to the terminal portion at a part of a front surface. Speaker terminal. The cable insertion hole is provided along the one direction so that the tip of the speaker cable is inserted from an opening on the side where the depth dimension of the storage recess is small in the penetration direction. The speaker terminal according to any one of claims 1 to 6. The speaker terminal according to any one of claims 1 to 7, wherein at least one of the cap and the mandrel is provided with a retaining portion that prevents the cap from being detached from the mandrel. . The mandrel is, in front of the connecting screw portion, claims 1, characterized in that the dimensions of the small and the axial direction than the outer diameter connecting screw portion is provided with idling portion larger than the connecting nut The speaker terminal according to claim 8 . The Utsuwatai is on the inner circumferential surface of the receiving recess, one of the claims 1 to 9, characterized in that it has a mirror surface for projecting at least one opening of the through direction in front of the cable insertion hole The speaker terminal according to claim 1. The mandrel is provided with a cable winding portion around which the speaker cable is wound and has an outer diameter smaller than that of the connection screw portion behind the connection screw portion in a portion located in front of the inclined surface. speaker coater Mina le according to any one of claims 1 to 10.

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