JP2000284811A - Terminal mount and electronic apparatus with terminal mount - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a terminal mount suitable for obtaining a sufficient heat radiating effect even for small electronic apparatus. SOLUTION: This terminal mount 1 is constituted so that plural slits 5 for heat radiation is arranged on the side of the bottom surface 2b of a terminal base part 2, when leg parts 4b of terminals 4 projecting on the backside of the terminal base part 2 are in a state in which they are connected with electronic circuit boards, etc., the slits 5 on the side of the terminal base part 2 and the electronic circuit boards, etc., are placed to face oppositely on the lower side of the terminal mount 1, heat generated in the case of operation of the electronic circuit board, etc., is radiated to the outside from the front surface 2c of the terminal base part 2 through the slits 5 from the rear surface 2d and the bottom surface 2b of the terminal base part 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal block to be attached to an electronic device and the electronic device, and more particularly to a terminal block having a sufficient heat radiation effect and capable of making the whole electronic device thin and compact. It is.

[0002]

2. Description of the Related Art Conventionally, terminal blocks used in electronic equipment have various structures, and one example is shown in FIG. This figure 6
The terminal block 1 shown in FIG.
It is mounted so as to be exposed on the front side, and a plurality of terminals 4, 4.
Wirings are removably attached to the heads of the terminals 4, 4,..., And the legs of the terminals 4, 4,... Serve as connection ends to an electronic circuit board (not shown). 2b, and is connected to an electronic circuit board or the like (not shown) located on the terminal base bottom surface 2b side.

[0003] In electronic equipment, from the viewpoint of minimizing the effect of heat generated during operation from an internal electronic circuit board or the like on the operating characteristics of the electronic circuit board or the like, a radiating means for releasing the heat to the outside is provided. This is necessary, and the conventional electronic device 11 shown in FIG. 6 also has a plurality of heat-radiating openings 13, 13,...

[0004]

However, recently,
When the electronic device is required to be downsized, and the electronic device is downsized accordingly, in the conventional electronic device 11 shown in FIG. 6, the ratio of the surface area occupied by the terminal block 1 to the total surface area of the entire device is reduced. It becomes large, and it is difficult to provide the heat radiation opening 13 in the device exterior case 12 that can sufficiently cope with the amount of heat generated by the electronic circuit board or the like in the interior. Therefore, a sufficient heat radiation effect by the heat radiation opening 13 cannot be expected, and a malfunction or the like of an electronic circuit board or the like due to a rise in temperature inside the electronic device may occur.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to respond to the trend of miniaturization of electronic equipment and to obtain a sufficient heat radiation effect even in a small electronic equipment. A terminal block and an electronic device with the terminal block are provided.

[0006]

In order to achieve the above object, the present invention provides a terminal base having a plurality of terminals arranged on a terminal base, wherein the terminal base is provided with a slit for heat radiation. It is characterized by having.

Further, the present invention is an electronic apparatus in which a terminal block having a plurality of terminals disposed on a terminal base is provided, wherein the terminal base has a slit for heat radiation. Is what you do.

According to the present invention, heat generated from the electronic circuit board or the like can be released to the outside from the slit on the terminal block side, and a sufficient heat radiation effect by the slit on the terminal block can be obtained.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to FIGS.

The terminal block 1 shown in FIG. 1 has a stepped upper surface 2a of a terminal base 2 and a plurality of terminals 4, 4 on a stepped surface of an upper step 3a and a lower step 3b of the step 3. … Is arranged. The wiring is detachably attached to the head 4a of each terminal 4. The foot 4b of each terminal 4 protrudes from the bottom surface 2b of the terminal pedestal 2 as a connection end to an electronic circuit board (not shown) and is connected to an electronic circuit board or the like located on the bottom 2b side of the terminal pedestal 2. Connected.

A plurality of slits 5 for heat radiation are provided on the bottom surface 2b side of the terminal pedestal portion 2. These slits 5 for heat radiation are respectively connected to the terminals 4, 4,.
It is formed between the terminals 4 and 4 so as not to interfere. Each of the slits 5, 5,...
The terminal block 2 is formed in a groove shape from the front surface 2c to the rear surface 2d, and is opened on three surfaces of the front surface 2c, the rear surface 2d and the bottom surface 2b of the terminal block 2.

The terminal block 1 constructed as described above has a foot 4 of terminals 4, 4...
b and 4b are connected to an electronic circuit board or the like (not shown).
When connected in this manner, on the lower side of the terminal block 1, the slits 5, 5,... Therefore, heat generated during the operation of the electronic circuit board or the like is released from the rear surface 2d and the bottom surface 2b of the terminal block 2 to the outside through the slits 5, 5,.

FIG. 2 shows another embodiment of the present invention. The terminal block 1 shown in the figure has a terminal base 2 (see FIG. 3) for improving the workability of wiring to the terminals 4, 4,...
Are detachably provided on the pedestal mounting base 7 (see FIG. 4).

As shown in FIG. 3, a bottom surface 2 of the terminal base 2 is provided.
A plurality of slits 5 having the same configuration as the above embodiment are provided on the b side. Also, a plurality of terminals 4, 4... Are provided on the step surfaces of the upper step 3a and the lower step 3b of the step section 3, respectively. Wirings are detachably attached to the head 4a of each terminal 4 as in the above embodiment. However, unlike the above-described embodiment, the foot portion 4b of each terminal 4 is formed in a clip shape so as to function as a pin insertion portion 9 into which the terminal foot extension pin 8 of the pedestal mounting base 7 is inserted.

The pedestal mounting base 7 is, as shown in FIG.
It comprises a bottom plate portion 7a formed in a stepped shape according to the shape of the bottom surface 2a of the terminal pedestal portion 2, a front panel portion 7b integrally erected on the front side of the bottom plate portion 7a, and the like. The terminal pedestal 2 is placed on the bottom plate 7a of the pedestal mounting base 7. At this time, the bottom surface 2a of the terminal base 2 and its front surface 2c
Most of the lower side of the bottom plate portion 7 of the pedestal mounting base 2
a and the inside of the front panel 7b, but the slits 5, 5,... formed in the terminal base 2 are not hidden. That is, the bottom plate portion 7a of the pedestal mounting base 7 and the front panel portion 7b thereof are formed such that the portions facing the slits 5, 5,... On the terminal pedestal portion 2 side are punched out in accordance with the slit shape. Are formed so that the slits 5, 5,... On the side of the terminal pedestal portion 2 are completely exposed to the outside in the same form by the openings 10, 10,.

The terminal foot extension pins 8, 8,... Of the pedestal mounting base 7 are attached and fixed to the bottom plate 7a of the pedestal mounting base 7 so as to penetrate the front and back surfaces thereof. The terminal pedestal 2 (see FIG. 3) and the pedestal mounting base 7 (see FIG. 4) are detachably fixed by screws 14.

As shown in FIG. 2, in the detachable terminal block 1 constructed as described above, the tip of the terminal foot extension pins 8, 8... It is connected to a circuit board or the like (not shown). When connected in this manner, the slits 5, 5,... On the terminal pedestal 2 side are exposed to the outside through the openings 10, 10,. Are arranged to face each other. Therefore, also in the detachable terminal block 1, heat generated during operation of the electronic circuit board and the like is released to the outside through the slits 5, 5,.

FIG. 5 shows an electronic apparatus 11 to which the detachable terminal block 1 shown in FIG. 2 is attached. In the electronic device 11 shown in FIG.
The terminal block 1 is mounted so as to be exposed on the surface side of the terminal block 1.
.. And the opening 13 of the equipment exterior case 12 provided below the terminal block 1 function as a heat radiating means. That is, an electronic circuit board or the like (not shown) is provided in the electronic device 11, but heat generated during operation of the electronic circuit board or the like is transmitted to the slits 5, 5,.
And through the opening 13 of the device exterior case 12.

The electronic device 11 of FIG. 5 is thinner and more compact than the conventional device shown in FIG. 6, but this is because the opening 1 of the device outer case 12 is formed as described above.
3 as well as the heat radiation effect of the slits 5, 5,... Of the terminal block 1, the heat radiation opening 13 corresponding to the heat radiation effect of the slits 5, 5,.
Can be reduced from the device exterior case 12, the opening area of the opening 13 in the device exterior case 12 can be significantly reduced as compared with the conventional product, and the electronic circuit board is brought closer to the lower surface side of the terminal block 1. This is because the distance between the terminal block 1 and the electronic circuit board can be reduced as compared with the conventional product.

The terminal block 1 of the present invention is a PLC in which a CPU, I / O, terminals and the like are integrated, a so-called micro PLC.
Can be applied to FIG. 7 is a block diagram showing an embodiment of the CPU unit 20 of the micro PLC to which the terminal block 1 of the present invention is applied.

As shown in FIG. 7, an MPU 21, a flash memory 22, an SRAM
23, an RTC 24, an ASIC 26, etc., and on the outer surface of the CPU unit 20, an I / O terminal block 1, an extension connector 28, a plurality of communication interface connectors 29, a dip switch 30, an analog volume 31 and an LED 32 are provided.

The MPU 21 has a flash memory 2
2. The SRAM 23, the RTC 24, and the like are connected to each other by the internal bus 33, and the data and the like are exchanged, and the process proceeds. Reference numeral 34 denotes a battery for holding data for the SRAM 23 and the RTC 24.

The ASIC 26 is connected to the MPU 21, the extension connector 28, and the terminal block 1 of the present invention. The terminal block 1, the DIP switch 30, the analog volume 31, and the LED 32 are connected to the MPU 21 respectively.
And exchanges data and the like with the outside, and performs input and output.

The plurality of communication interface connectors 29 are connected to the MPU 21 inside the CPU unit 20.
And a plurality of communication interface wirings are connected together, and this communication interface connector 2
Reference numeral 9 denotes a port of a multi-system communication interface (in this embodiment, a peripheral port for a programming tool and an RS232C port for a display).

The CPU unit 20 is installed on a control panel (not shown) in the factory, and another control panel is connected to the expansion connector 28 and an I / O connected by a connection cable connected thereto. An extension device (not shown) and the like are installed.

In the factory, the CPU unit 2
At 0, peripheral devices such as a programming tool and a display (not shown) are connected as needed, and are used for creating and updating a user program and monitoring a work situation. These programming tools and indicators are conventionally used programming tools and indicators, and the respective connectors are peripheral port connection connectors in the programming tool and RS232C connectors in the indicator.

[0027]

According to the present invention, as described above, the terminal pedestal is provided with a heat-dissipating slit. Therefore, heat generated from the electronic circuit board or the like can be released to the outside from the slit on the terminal block side, and a sufficient heat radiation effect can be obtained by the slit on the terminal block. There are effects such as the effect can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a terminal block according to the present invention.

FIG. 2 is a front view of a detachable terminal block according to another embodiment of the present invention.

3 (a) is a front view of a terminal base portion of the detachable terminal block shown in FIG. 2, FIG. 3 (b) is a side view thereof, and FIG. 3 (c).
Is a bottom view thereof.

4A is a front view of a pedestal mounting base of the detachable terminal block shown in FIG. 2, and FIG. 4B is a cross-sectional view of a side surface thereof.

FIG. 5 is an exemplary front view of the electronic apparatus provided with the terminal block shown in FIG. 2;

FIG. 6 is a front view of an electronic device provided with a conventional terminal block.

FIG. 7 shows C of a micro PLC to which the terminal block of the present invention is applied.
FIG. 2 is a block diagram showing an embodiment of a PU unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Terminal block 2 Terminal pedestal part 2a Upper surface of terminal pedestal part 2b Bottom of terminal pedestal part 2c Front of terminal pedestal part 2d Rear surface of terminal pedestal part 3 Step 3a Step upper 3b Step lower 4 Terminal 5 Slit 7 Base mounting base 7a Bottom plate part of pedestal mounting base 7b Front panel part of pedestal mounting base 8 Engagement pin 9 Pin insertion part 10 Opening of pedestal mounting base 11 Electronic device 12 Equipment exterior case 13 Heat radiation opening

Claims (2)

[Claims] 1. A terminal base having a plurality of terminals arranged on a terminal base, wherein a slit for heat radiation is provided in the terminal base. 2. An electronic device in which a terminal block having a plurality of terminals arranged on a terminal pedestal is provided, wherein the terminal pedestal is provided with a slit for heat radiation. Electronics.