JPH04126450U - ISDN transmission equipment - Google Patents

Abstract

(57) [Summary] [Purpose] To provide an ISDN transmission device in which the width of the circuit board can be reduced to reduce the size of the device, and connectors for transmission and reception can be provided in the device housing. . [Structure] A first connector 30 that is used both for transmitting and receiving various signals is provided at the rear end 23, and a second connector 40 that is used only for either transmission or reception is provided near the rear end 23. A circuit board 22 is provided on the back plate 51, a first opening 53 is formed in the rear plate 51, and a first opening 53 is formed in the back plate 51. The apparatus casing 21 has a second opening 55 formed therein, and a third connector 57 connected to the second connector 40 by cable is attached to the opening 55.

Description

[Detailed explanation of the idea]

[Purpose of invention]

0001

[Industrial application field]

This invention communicates various signals compatible with ISDN (Integrated Service Digital Network). This invention relates to improvements in ISDN transmission equipment.

0002

[Conventional technology]

ISDN transmission equipment inputs and outputs multiple signals such as images, audio, data, etc. This is a device for transmitting various signals using a DN line. This type of conventional ISDN transmission equipment is shown in FIGS. 4 to 6.

0003 This device has a transmission capacity of 2B+D (B; 64Kbit/S, D; 16Kbit/S). , one ISDN line is accommodated, and as shown in FIG. includes a power connector 5, an ISDN line modular connector 6, and a control connector. connector 7, image connector 8A, 8B, data connector 9A, 9B and sound A voice connector 10 is provided.

0004 These various connectors 5 to 10 are connected directly to the rear end 13 of the circuit board 12, as shown in FIG. It is screwed together and soldered to the pattern on the circuit board 12, as shown in Figure 5. As shown, the circuit board 12 is screwed to the device housing 1 and placed on the back plate 3. has been done. In addition, the circuit board 12 includes both the transmitting side (slave station side) and the receiving side (master station side). A circuit with the functions of By doing so, it is possible to transmit and receive various signals such as images, audio, and data.

However, according to this conventional device, the width L ₁ of the circuit board 12 is determined by the size of the connectors 5 to 10 arranged at the rear end 13 of the circuit board 12. There was a problem in that the width L ₁ could not be reduced even if the devices were mounted at high density, and therefore the lateral dimension L ₂ of the device could not be reduced.

[0006] In addition, this device has the function of transmitting and receiving, so it can be used as a transmitter. Two image connectors and two data connectors are available to meet your needs. However, if you use this device primarily as a receiver, you must use these commands. There was a problem that half of the connectors were unused.

[0007]

[Problem that the idea aims to solve]

As mentioned above, in conventional ISDN transmission equipment, the width of the equipment is limited due to the width dimension of the circuit board. Miniaturization was hindered. In addition, when using this device mainly as a receiving side, There was an inconvenience that some connectors were not used.

[0008] The present invention was developed in view of these conventional drawbacks, and the width dimension of the circuit board The method can be made smaller, and therefore the device can be made more compact. ISDN that allows connectors for transmission and reception to be installed on the device housing. The purpose is to provide transmission equipment. [Structure of the idea]

[0009]

[Means to solve the problem]

The ISDN transmission device of the present invention is for transmitting and receiving various signals such as images, audio, and data. A first connector, which also serves as a credit, is provided at a predetermined end, and is connected to the various signals. A second connector used for only one of transmission and reception is located at a location other than the predetermined end. A circuit board provided in the part,

0010 a first opening into which the circuit board is mounted and which exposes the first connector to the outside; is provided on a predetermined surface, and is located above the first opening on the predetermined surface. is attached with a third connector that is cable-connected to the second connector. and a device casing in which a second opening is formed.

[0011]

[Effect] In this invention, one of the various connectors provided on the circuit board is used for both transmission and reception. Only the first connector is provided on the edge of the circuit board, and the second connector is used only for transmission. Since the connector is installed on a part other than the edge of the circuit board, only the second connector is required. The width of the circuit board can be reduced. Also, manufacture a device that uses a second connector. if the third connector is installed in the second opening of the device housing and the second connector Connect the cable between the connector and the third connector.

0012

【Example】

Hereinafter, one embodiment of the present invention will be described in detail with reference to FIGS. 1 to 3. Figure 2 is a perspective view of the ISDN transmission equipment, Figure 1 is a sectional view taken along line X-X in Figure 2, and Figure 3 is the circuit. FIG. 3 is a plan view of the substrate. As shown in FIG. 1, the transmission device according to the present invention has a circuit board 22 screwed into the device housing 21. It is stopped and configured.

[0013] The circuit board 22 is formed with circuit parts that configure various functions of the device. The rear end 23 of 22 is equipped with a A plurality of connectors 30 (first connectors) are provided for use at the rear end of the circuit board 22. Nearby are multiple connectors 40 (second connector) is provided.

[0014] As shown in Figure 3, this device includes a power connector 31, an ISDN line modular Connector 32, control connector 33, image connector 34, data connector 35 and audio connector 36 correspond to the connector 30 used for both transmission and reception, and the data connector 41 and the image connector 42 correspond to the transmission-only connector 40.

[0015] On the other hand, on the back plate 51 of the device housing 21, a connector 30 for both transmission and reception is exposed outside the housing 21. An opening (first opening) 53 for connecting to an external cable is provided on the lower side. An opening (second opening) 55 is provided on the upper side of the opening 53. . This opening 55 is used to connect an external cable when using a transmit-only connector 40. It has a configuration in which a connected connector (third connector) 57 can be attached, Connector 57 has connector 61 provided at the end of cable 59 connected to connector 40. By doing so, it is connected to the connector 40.

In this way, in the device of this example, only the connector 30 used for both transmission and reception is directly attached to the rear end 23 of the circuit board 22, and the connector 40 only for transmission is attached to a part other than the rear end 23. Therefore, the width L ₃ of the circuit board 22 can be made much smaller than the width L ₁ of the conventional circuit board 12. Therefore, it is possible to reduce the width _L4 of the device housing 21, and the device can be made smaller.

[0017] In addition, when using the device as a transmitter, attach the connector 57 to the housing 21. Two additional terminal devices (not shown) can be connected by connecting cable 59 to connector 40. ) can be connected.

[0018] On the other hand, if the device is used as a receiver, the third connector 57 is not required. , since the third connector 57 is not directly attached to the circuit board 22, the opening 55 is connected to a blind plate ( (not shown) prevents unnecessary connectors from being exposed to the outside of the device. . Therefore, unnecessary connectors will not be exposed from the device housing, so you can avoid accidentally exposing unnecessary connectors. If the cable is inserted into an unnecessary connector, or if the connector is exposed for some reason. Accidents such as short-circuiting of connector terminals can also be prevented.

[0019]

[Effect of the idea]

As explained above, in the ISDN transmission device of the present invention, both transmission and reception Since only the first connector used is directly attached to a given edge of the circuit board, The width of the circuit board can be reduced, and therefore the device can be made more compact.

[0020] You can also use a second connector that is attached directly to a portion of the circuit board other than the designated edge. If the device is used for This connector is connected to the second connector with a cable, so there are no unnecessary connections. The connector is not exposed from the device housing. Therefore, you may accidentally connect the cable to an unnecessary connector. This prevents accidents such as plugging into connectors or shorting exposed connector terminals. It can be prevented.

[Brief explanation of drawings]

FIG. 1 is a sectional view of essential parts of an ISDN transmission device according to an embodiment of the present invention.

FIG. 2 is a perspective view of the ISDN transmission device.

FIG. 3 is a plan view showing a circuit board of the device.

FIG. 4 is a perspective view of a conventional ISDN transmission device.

FIG. 5 is a sectional view taken along the Y-Y line in FIG. 4;

FIG. 6 is a plan view showing a circuit board of the device.

[Explanation of symbols]

21 Device housing 22 Circuit board 30 First connector 40 Second connector 51 Rear plate (predetermined surface) 53 First opening 55 Second opening 57 Third connector 59 Cable

Claims (1)

[Scope of utility model registration request] Claim 1: A first connector that is used both for transmitting and receiving various signals such as images, audio, and data is provided at a predetermined end, and is used only for transmitting and receiving the various signals. a circuit board having a second connector provided at a portion other than the predetermined end; and a first opening to which the circuit board is attached and which exposes the first connector to the outside is located on a predetermined surface. and a second opening is formed above the first opening in the predetermined surface to which a third connector that is cable-connected to the second connector is attached. An ISDN transmission device comprising a housing.