JP2004063299A - Terminal board structure of apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To compose a terminal board corresponding to an arbitrary number of boards without unnecessarily mounting terminal fittings, terminal screws or the like, in an apparatus having a rear case connected to the back of a front case and provided with a terminal board on the back of the rear case. <P>SOLUTION: This terminal board structure of an apparatus is so composed that, on the back of the rear case 2, a plurality of slits enabling insertion of end parts of a plurality of boards 6 built in the case are formed; the terminal boards 10 are detachably mounted to the back part of the rear case 2 in accordance with the respective slits; and the terminals provided for the terminal boards 10 are electrically connected to the end parts of the boards 6 projected to the back part of the rear case through the slits. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a terminal block structure in various devices such as a temperature controller and a digital panel meter.
[0002]
[Prior art]
Conventionally, in a temperature controller, for example, as disclosed in Japanese Patent Application Laid-Open No. 2001-124636, a terminal block is integrally formed in a rear case assembled to the back of the device, and basically, a board to be mounted is mounted. Is a dedicated case having terminal blocks corresponding to the number of the terminals. Further, in a model in which an optional board such as a communication board is mounted, the rear case structure assumes that the optional board is mounted.
[0003]
[Problems to be solved by the invention]
As described above, in the conventional case where the terminal block is integrally formed on the rear case, in the rear case structure assuming that an optional board such as a communication board is mounted, if the optional board is not mounted, the board is not mounted. In the terminal block portion corresponding to the above, an opening is generated.
[0004]
Such an opening is not preferable from an aesthetic point of view, and in order to prevent a fingertip from touching an internal circuit or a foreign substance from entering into the inside, a terminal is provided in the opening even though the optional board is not mounted. The fittings and terminal screws were attached and closed, which contributed to high costs.
[0005]
Further, as proposed by the applicant in Japanese Patent Application No. 2002-144490, filed on May 20, 2002, as “application for electronic device and method of using the device”, for input, output, and power supply Prepare various types of boards for communication, select necessary boards and mount them in a common case to configure the required model. The type and the number of sheets will be different.
[0006]
Therefore, in order to configure a plurality of models having different numbers of substrates using a common case, a conventional structure in which a terminal block is integrally formed in a rear case cannot be used.
[0007]
The present invention has been made in view of such a situation, and a terminal block corresponding to an arbitrary number of substrates can be configured without providing unnecessary components such as terminal fittings and terminal screws. The main purpose is to do so.
[0008]
[Means for Solving the Problems]
The present invention is configured as follows to achieve the above object.
[0009]
That is, the terminal block structure of the device of the present invention is a terminal block structure of a device having a terminal case on the rear surface of the rear case while connecting the rear case to the rear surface of the front case, and the terminal block is detachably attached to the rear case. Along with the configuration, on the back of the rear case, formed are a plurality of slits through which the ends of a plurality of substrates incorporated in the case can be inserted, and the terminal provided on the terminal block and the rear case rear portion through the slit. The protruding end of the substrate is electrically connected.
[0010]
According to the present invention, it is sufficient to mount the terminal blocks on the rear case in a number corresponding to the number of substrates to be mounted, and the slits where the substrates are not mounted are exposed, but are large enough for the substrate to be inserted. The small slit is smaller than the conventional opening for mounting the terminal fitting and the terminal screw, is also good in aesthetic appearance, does not touch the internal circuit with the fingertip, and further prevents foreign matter from entering. The function is sufficient, and there is no need to hide the slit with another member.
[0011]
Further, the terminal block structure of the device of the present invention is a terminal block structure of a device having a rear case connected to the back of the front case and a terminal block provided on the back of the rear case, wherein the terminal block is detachably attached to the rear case. Along with the configuration, on the back of the rear case, formed are a plurality of slits through which the ends of a plurality of substrates incorporated in the case can be inserted, and the terminal provided on the terminal block and the rear case rear portion through the slit. The protruding end of the board is electrically connected to the rear case, and the rear case is closed so that the terminal of the terminal block cannot be inserted into the case.
[0012]
According to the present invention, it is sufficient to mount the terminal blocks on the rear case in a number corresponding to the number of substrates to be mounted, and the slits where the substrates are not mounted are exposed, but are large enough for the substrate to be inserted. The small slit is smaller than the opening in which the conventional terminal fittings and terminal screws are mounted, and the rear case is closed off so that the terminal of the terminal block cannot be inserted into the case. As a result, the fingertip does not touch the internal circuit, and the function of preventing the invasion of foreign matter is sufficient. It is not necessary to cover the slit with another member.
[0013]
In one embodiment of the present invention, the boards are incorporated in the case according to specifications, and the terminal blocks of a number corresponding to the number of the incorporated boards are mounted at corresponding positions of the rear case. Things.
[0014]
According to the present invention, the type and number of boards are selected and incorporated in the case according to the specifications of the device, while the number of terminal blocks corresponding to the number of boards is mounted at the corresponding position on the rear case. In addition to being able to configure devices of various specifications in a common case, the portion where the terminal block is not mounted only exposes a slit that is large enough for the board to be inserted, making it aesthetically pleasing, and In addition, the fingertip does not touch the internal circuit, and it is sufficient for the function of preventing the invasion of foreign matter, and there is no need to hide the slit with another member.
[0015]
In another embodiment of the present invention, the terminal block can be detachably attached to the rear case by engaging and disengaging an engagement hole and an elastically deformable engagement claw, and a plurality of the slits have the same shape.
[0016]
According to the present invention, a desired model can be configured by mounting the same size boards according to the specifications of the device, and the terminal block can be detached from the rear case with a single touch.
[0017]
In a preferred embodiment of the present invention, a cutout piece supported by a plurality of support portions adjacent to the slit is formed on a rear surface of the rear case so that an opening for mounting a connector can be cut out.
[0018]
According to the present invention, the rear surface of the rear case usually has only a small opening such as a slit for inserting a board, and can sufficiently prevent the invasion of foreign substances, but if necessary, cut out the opening for mounting a connector. Can be easily formed.
[0019]
In another embodiment of the present invention, an erroneous mounting prevention hole into which a projection provided on the terminal block can be inserted is formed at a predetermined position on the rear surface of the rear case.
[0020]
According to the present invention, erroneous mounting can be prevented by the protrusion of the terminal block and the erroneous mounting prevention hole on the rear surface of the rear case, and the handleability is excellent.
[0021]
In still another embodiment of the present invention, the terminal of the terminal block includes a terminal fitting press-fitted into a boss portion of the terminal base, a contact terminal having a spring property attached to the terminal fitting, and the terminal fitting. A terminal screw to be screw-mounted, wherein the contact terminal and the end of the substrate protruding from the rear case back through the slit are brought into contact with each other.
[0022]
According to the present invention, on the rear surface of the rear case, there is no need to provide an opening for inserting the terminal fitting, the contact terminal and the terminal screw into the case, and only the slit needs to be formed. The slit is not touched, and is sufficient for the function of preventing the invasion of foreign matter, and there is no need to hide the slit with another member.
[0023]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment in which the present invention is applied to a temperature controller will be described with reference to the drawings.
[0024]
FIG. 1 is a perspective view of the temperature controller as viewed from the front side, FIG. 2 is a perspective view of the temperature controller as viewed from the rear side, and FIG. 3 is an exploded perspective view. This temperature controller has a structure in which a front case 1 is fitted to a front end of a box-shaped rear case 2 opened forward, and a wiring connection portion 3 is provided on the back of the rear case 2. On the front of the front case 1, an information display unit 4 for displaying temperature information such as a current temperature and a target temperature on a liquid crystal display and a plurality of operation keys 5 for setting various functions are provided. As shown in FIG. 3, a plurality of substrates 6 are mounted in parallel in a vertical orientation.
[0025]
As shown in FIGS. 6 and 7, the rear wall 2a of the rear case 2 is provided slightly in front of the rear end of the case, and is formed into four rectangular recesses by vertical ribs 2b and horizontal ribs 2c crossing each other. Three to two slits 7 are vertically formed in each rectangular recessed portion. These slits 7 are provided corresponding to the arrangement of the maximum number of substrates 6 mounted on the front case 1, and as shown in FIGS. 8 to 10, the inner surfaces of the upper wall 2 d and the lower wall 2 e of the rear case 2. Is formed with a guide groove 8 connected to the slit 7. The upper and lower edges of the substrate 6 inserted into the rear case are guided by the guide groove 8 and guided to the slit 7.
[0026]
The wiring connection portion 3 is provided with a plurality of terminal blocks 10 formed in a vertically long block shape. In this example, each terminal block 10 is detachably attached to the back of the rear case 2 corresponding to each slit 7. Mounted as possible. That is, as shown in FIG. 5, elastically deformable engaging claws 11 are formed on the upper and lower sides of each terminal block 10. Each terminal block 10 can be arbitrarily attached to and detached from the back of the rear case 2 by elastically engaging the engagement holes 12 formed in the peripheral wall.
[0027]
The back of the terminal block 10 is divided into a plurality of upper and lower parts by ribs 13, and wiring terminals 14 are provided in each partition in parallel. As shown in FIG. 4, the terminal 14 includes a terminal fitting 16 press-fitted into the boss portion 15 of the terminal block 10, a contact terminal 17 made of a spring plate material which is fitted over the terminal fitting 16 and retained and locked. It comprises a terminal screw 18 screwed into the terminal fitting 16 and a washer 19.
[0028]
As shown in FIG. 5, the front side of the terminal block 10 is also divided into a plurality of upper and lower parts by ribs 20, and each rib 20 is formed with a slit 21 for positioning and guiding the substrate 6, and is positioned. The contact piece 17a extending and bent from the contact terminal 17 comes into contact with the board 6 that has been made, and thus the conductive portion (not shown) of the circuit pattern printed on the board 6 and the terminal 14 are conducted. It has become.
[0029]
In this example, as shown in FIG. 5, two types of terminal blocks 10 (1) and 10 (2) in which the contact terminals 17 are unevenly distributed to the left or right are prepared. The terminal block 10 (1) is used only for the slit 7 at the upper left end when viewed from the back, and a common terminal block 10 (1) can be used for the other slits 7.
[0030]
As shown in FIGS. 6 and 7, when viewed from the back, the bridge portion 22 as a plurality of support portions is supported on the lateral sides of the upper right four slits 7 and the lower left end slit 7. A cutout piece 23 is provided. By cutting the bridge portion 22 and cutting out the cutout piece 23, a vertically long opening for mounting a connector is formed.
[0031]
In addition, as shown in FIG. 5, a small projection 24 for preventing erroneous mounting is provided at a position near the front lower side of the terminal block 10 (1) of the common specification. The small projections 24 are provided so that the terminal block 10 (1) is mounted at a predetermined position only in a predetermined vertical direction, and a small hole 25 formed at a predetermined terminal block mounting portion, and , Can be inserted into a cut groove 26 formed around the cutout piece 23. If the small projections 24 are cut off, the terminal block 10 (1) can be attached to a place where the small holes 25 and the cut grooves 26 are not provided.
[0032]
The terminal block structure according to the present invention is configured as described above. Even if the number and the mounting positions of the boards 6 to be mounted are different depending on the specifications of the device, the terminal block 10 is mounted in accordance with the number and the mounting positions of the boards 6. By mounting, the front case 1 and the rear case 2 can be shared.
[0033]
Therefore, it is possible to configure devices according to various specifications in a common case. In particular, as described in Japanese Patent Application No. 2002-144490 previously proposed by the present applicant, an input, output, and power supply It can be suitably implemented when preparing various types of substrates for communication, communication, etc., selecting necessary substrates and mounting them in a common case to form a required model.
[0034]
The present invention can be implemented in the following modes.
[0035]
(1) In the above embodiment, one terminal block piece is configured to be mounted corresponding to one slit, but a terminal block corresponding to one slit and a plurality of slits are supported. A terminal block may be prepared in advance, and these terminal blocks may be combined and mounted. In this case, as the terminal block corresponding to the plurality of slits, for example, a vertically long terminal block piece corresponding to the vertically arranged slits, a wide terminal block piece corresponding to the plurality of slits arranged left and right, or Alternatively, a terminal block having a size corresponding to a plurality of slits lined up, down, left, and right can be prepared in advance, and these can be selected and used according to the number of substrates.
[0036]
(2) The mounting structure of the terminal block to the rear case is not limited to the above-described structure, and may be a structure in which a locking claw is provided in the rear case and an engaging hole is provided in the terminal block. Further, in a device that requires a particularly strong mounting of the terminal block, the terminal block may be screw-connected to the rear case.
[0037]
【The invention's effect】
As described above, according to the present invention, the terminal block can be mounted corresponding to only the substrate protruding from the slit of the rear case, so that devices of various specifications having different numbers of mounted substrates can share the case. Even if the number of substrates to be mounted is small, the back of the rear case will not be greatly opened and only a narrow slit that can sufficiently prevent foreign matter from entering will be exposed, so it is also aesthetically pleasing. Unlike the related art, it is not necessary to mount members such as terminal fittings and terminal screws for closing the opening, and it can be implemented at low cost.
[0038]
In particular, if each slit has the same shape, it is possible to cope with the same size substrate and the same terminal block, which is effective for cost reduction.
[0039]
In addition, the versatility of the case can be further enhanced by forming the connector mounting opening so that it can be cut out on the rear case rear surface.
[Brief description of the drawings]
FIG. 1 is an overall perspective view of a temperature controller having a terminal block structure according to the present invention as viewed from the front side.
FIG. 2 is an overall perspective view of the device when the temperature controller of FIG. 1 is viewed from the back side.
FIG. 3 is an exploded perspective view of the temperature controller of FIG. 1;
FIG. 4 is a cross-sectional plan view of a main part of the temperature controller of FIG. 1;
FIG. 5 is a perspective view of a terminal block of the temperature controller of FIG. 1;
FIG. 6 is a perspective view of a rear case of the temperature controller of FIG. 1 as viewed from the rear side.
FIG. 7 is a rear view of a rear case of the temperature controller of FIG. 1;
FIG. 8 is a front view of a rear case of the temperature controller of FIG. 1;
FIG. 9 is a cross-sectional plan view of a rear case of the temperature controller of FIG. 1;
FIG. 10 is a vertical side view of a rear case of the temperature controller of FIG. 1;
[Explanation of symbols]
REFERENCE SIGNS LIST 1 front case 2 rear case 6 substrate 7 slit 10 terminal block 11 engaging claw 12 engaging hole 14 terminal 24 small protrusion 25 small hole

Claims (7)

A terminal block structure of a device that has a rear case connected to the back of the front case and a terminal block on the back of the rear case,
The terminal block is configured to be detachably attached to a rear case, and a plurality of slits are formed on a rear surface of the rear case so that ends of a plurality of substrates incorporated in the case can be inserted therein, and the terminal provided on the terminal block is provided. And an end of the substrate protruding from the rear case through the slit to the back of the rear case, wherein the terminal is electrically connected. A terminal block structure of a device that has a rear case connected to the back of the front case and a terminal block on the back of the rear case,
The terminal block is configured to be detachably attached to a rear case, and a plurality of slits are formed on a rear surface of the rear case so that ends of a plurality of substrates incorporated in the case can be inserted therein, and the terminal provided on the terminal block is provided. And the end of the substrate protruding from the rear case back through the slit is electrically connected, and the rear case is closed so that the terminal of the terminal block cannot be inserted into the case. A terminal block structure for a device, characterized in that: The device according to claim 1, wherein the board is incorporated in the case according to specifications, and the terminal blocks of a number corresponding to the number of the boards incorporated are mounted at corresponding positions of the rear case. Terminal block structure. The device according to any one of claims 1 to 3, wherein the terminal block is detachably attached to the rear case by engagement and disengagement of an engagement hole and an elastically deformable engagement claw, and a plurality of the slits have the same shape. Terminal block structure. The terminal according to any one of claims 1 to 4, wherein a cutout piece supported by a plurality of support portions adjacent to the slit is formed on a rear surface of the rear case so that an opening for mounting a connector can be cut out. Table structure. The terminal block structure for an apparatus according to any one of claims 1 to 5, wherein an erroneous mounting prevention hole into which a protrusion provided on the terminal block can be inserted is formed at a predetermined position on the rear surface of the rear case. The terminal of the terminal block includes a terminal fitting press-fitted into a boss portion of the terminal block, a contact terminal having a spring property attached to the terminal fitting, and a terminal screw screwed into the terminal fitting.
The terminal structure of a device according to any one of claims 1 to 6, wherein the contact terminal and an end of the substrate protruding from the rear case through the slit are in contact with each other.

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