JPH07271303A - Instrument having sealing structure for housing part - Google Patents

Abstract

PURPOSE:To simplify a structure for sealing a housing part by rapidly and efficiently carrying out an exchange operation of exchange parts at the spot. CONSTITUTION:The terminal base part of an instrument having a case body 1 arranged with a terminal base part 8 in the lower part of the front surface of the case and the housing part 5 for housing the exchange parts in the intermediate part, respectively, a housing cover 4 covering the housing part, and a terminal cover 3 covering the terminal base part is formed in the position recessing deeper from the housing part. This instrument is provided with housing cover mounting means 9, 10, 11, 12 for inserting the housing cover from below the front surface and mounting the cover at the housing part, terminal cover mounting means 13, 22 for mounting a terminal cover from the front surface of the case body to the terminal base part and sealing means 15 for sealing the terminal cover, respectively. The housing part is provided with a notch part 6. The housing cover is provided with a projecting part 7 to be fitted into a notch in the state of mounting the cover into the housing part. The mounting position of the terminal cover to the terminal base part is so set that the fitting to the notch is maintained by pressing the projecting part fitted into the notch from below in the state that the housing cover is mounted at the housing part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of an instrument having a structure for sealing a storage portion for storing replacement parts (storage items) such as batteries.

[0002]

2. Description of the Related Art Conventional sealed instruments such as integrating calorimeters that have replacement parts such as batteries for power supply, power circuits, interface circuits, etc. are installed on the back of the instrument or inside the instrument in order to realize the meaning of sealing. The storage part is arranged so that replacement parts cannot be easily taken out.

Further, regarding the sealing of the measuring instrument, a method of guaranteeing the sealing of the replacement parts to be stored is adopted by keeping the measuring instrument installed on a wall or the like.

[0004]

In such a conventional instrument having a structure for sealing the storage portion, when it becomes necessary to replace the replacement part, the instrument remains installed on a wall or the like. It is difficult to replace the replacement parts.Therefore, the replacement work of the replacement parts requires removing the instrument from the wall once or requesting the replacement work from the manufacturer, resulting in poor workability. Not only will this be troublesome, but the instrument will not be able to measure during the replacement work, which will be a hindrance.

An object of the present invention is to solve the above-mentioned problems and to provide an instrument having a simplified structure for accommodating a storage part, which enables quick and efficient replacement work of replacement parts on site.

[0006]

According to the present invention, there is provided a case main body in which a measurement instruction value display portion is provided on an upper portion of a front surface of a case, a terminal block portion is provided at a lower portion, and a storage portion for storing a replacement part is provided at an intermediate portion. In a meter provided with a storage cover that covers the storage portion so that replacement parts are not taken out, and a terminal cover that covers the terminal block portion, the terminal block portion is formed at a position retracted deeper than the storage portion, Storage cover mounting means for inserting the storage cover from the lower front side of the case main body to mount the storage cover, terminal cover mounting means for mounting the terminal cover to the terminal block portion from the front side of the case main body, and , Each of which has a sealing means for sealing the terminal cover, is provided with a cutout portion in the storage portion, and is fitted to the cutout portion when the storage cover is attached to the storage portion. A convex portion that is provided, presses the convex portion that is fitted to the cutout portion from below in a state where the storage cover is attached to the storage portion, and holds the fitting with the cutout portion, A mounting position of the terminal cover to the terminal base portion is set.

[0007]

In the present invention, the terminal cover prevents the terminal cover from being removed unless the terminal cover is removed by holding and holding the fitting of the convex portion of the housing cover and the notch of the housing portion. ing. Therefore, the sealing of the terminal cover simultaneously indirectly seals the storage cover.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a perspective external view of an instrument (accumulation calorimeter) having a storage part sealing structure according to an embodiment of the present invention. Two
In addition, a terminal cover 3 for covering a terminal block portion for connecting to a remote display or the like is provided at a lower portion, and a storage cover 4 for covering a storage portion for storing replacement parts such as a battery as a power source is provided at an intermediate portion. It is installed.

FIG. 2 is a perspective external view showing a state in which the terminal cover 3 has been removed from the instrument having the same sealing structure for the storage portion. In the state where only the storage cover 4 is fitted and attached to the case main body 1, the case main body is shown. It is shown that the convex portion 7 of the storage cover 4 is fitted in the notch 6 of the first storage portion 5.

FIG. 3 is a bottom external view of an instrument having a storage portion sealing structure, in which the storage cover 4 is fitted and mounted on the case body 1, and further the terminal cover 3 is mounted, and the notch of the storage portion 5 is formed. It is shown that a part of the convex portion 7 of the storage cover 4 fitted to the portion 6 is pressed and held.

FIG. 4 shows a case body, a storage cover, a terminal cover, and a measuring instrument which also has a storage portion sealing structure.
It is a figure which shows each sealing part.

As described above, the case body 1 is roughly classified into
Measurement indication value display 2 on the upper front and terminal block 8 on the lower
And a storage part 5 in the middle part.

The storage part 5 is provided with a notch 6 at the bottom, storage cover receiving claws 9 on both left and right sides of the inside, and a storage cover temporary fixing hole 10 at the top.

The terminal block portion 8 is provided at a position retracted deeper than the storage portion 5, and the insertion claw guide 2 is provided in the terminal block portion 8.
2 and screw holes 23 are provided.

The storage cover 4 is provided with a convex portion 7 on the bottom, hooking claws 11 on the top, and bag-like pull-out preventing claws 12 on the left and right sides of the back surface.

The terminal cover 3 has insertion claws 13 on both left and right sides.
And a screw hole 14 are provided.

Further, in the sealing portion 15, both ends of the sealing wire 20 passing through the hole 17 formed in the head portion 16a of the sealing screw 16 and the hole 24 formed in the sealing plate 18 are joined by the sealing lead 21. Is formed in this way.

The procedure for sealing the storage section 5 will be described below with reference to FIG.

After accommodating a storage item such as a battery in the storage section 5, the storage cover 4 is slid upward from the lower front of the case body 1 along the storage cover receiving claws 9 to hook the claws on the upper part of the storage cover 4. 11 for storing cover temporary fixing hole 10
Then, due to the elasticity of the storage cover 4 formed of a plastic material or the like, it is temporarily fixed so as not to fall off from the case body 1.

At this time, the storage cover receiving claws 9 inside the storage portion 5 are fitted to the bag-shaped pull-out preventing claws 12 provided on the left and right sides of the back surface of the storage cover 4, and the front side of the case body 1 is moved forward. Not pulled out. At the same time, the cutout portion 6 of the storage portion 5 and the convex portion 7 of the storage cover 4 are fitted together.

Next, the terminal cover 3 is mounted by inserting the insertion claws 13 provided on both the left and right sides into the insertion claw guides 22 provided on the terminal base portion 8 from the front of the case body 1, and then from above. , The sealing screw 16 is screwed into the screw hole 23 of the terminal block portion 8 through the sealing hole 19 formed in the sealing plate 18 and the screw hole 14 of the terminal cover 3 to form the sealing plate 1
8 is fixed to the terminal cover 3, and the head 16a of the sealing screw 16
The sealing wire 20 is passed through the hole 17 drilled in the hole 17 and the hole 24 drilled in the sealing plate 18, and both ends of the sealing wire 20 are joined by the sealing lead 21 to complete the sealing.

At this time, as shown in FIG. 3, the upper edge 3a of the terminal cover 3 in the front direction is fitted to the notch 6 of the housing 5 of the case body 1 and the convex portion 7 of the housing cover 4. Since it is pressed and held so as not to slide downward, the storage cover 4 cannot be detached from the case body 1, and the sealing of the storage cover 4 that covers the storage portion 5 at the same time is achieved by the sealing of the terminal cover 3.

As described above, the terminal cover 3 is attached to the sealing screw 1
6 A seal that prevents the replacement of the storage cover 4 covering the storage part 5 at the same time so that replacement parts (batteries, power supply circuits, interface circuits, etc.) stored in the storage part 5 cannot be taken out by pressing only one piece. The structure can be realized by a simple structure.

Further, since the work of taking out the replacement parts housed in the housing part 5 is the reverse of the above-mentioned sealing procedure, it is possible to directly carry out from the front of the case body 1 with the instrument installed on a wall or the like. Therefore, the workability is remarkably improved, and the downtime of the measuring instrument can be shortened.

In the connection work of the electric wire for outputting the measured value at the terminal block portion 8, the storage cover 4 will not be detached from the case body 1 unless the storage cover 4 is intentionally slid downward. The cover 4 does not fall off and hinder the work.

[0026]

As described above, according to the present invention,
The terminal block part is formed at a position retracted from the storage part, and the storage cover is inserted from the lower front of the case body to mount it on the storage part. A terminal cover attaching means for attaching the terminal cover and a sealing means for sealing the terminal cover, each of which has a cutout portion in the storage portion, and the storage cover is fitted to the cutout portion in a state of being attached to the storage portion. The terminal block part of the terminal cover is provided with a convex portion, and the convex portion fitted into the cutout portion is pressed from below in a state where the storage cover is attached to the storage portion so that the fitting with the cutout portion is maintained. The mounting position is set so that the storage cover cannot be removed unless the terminal cover is removed.By sealing the terminal cover, the storage cover can be indirectly sealed at the same time. Takara, in situ replacement of replacement parts can be performed quickly and efficiently, also it is possible to simplify the seal structure of the housing part.

[Brief description of drawings]

FIG. 1 is a perspective external view of an instrument having a storage portion sealing structure according to an embodiment of the present invention.

FIG. 2 is a perspective external view showing a state in which the terminal cover has been removed, of the instrument having the same sealing structure as the storage section.

FIG. 3 is a bottom external view of an instrument similarly having a storage portion sealing structure.

FIG. 4 is a view showing a case body, a storage cover, a terminal cover, and a sealing portion of the instrument having the same sealing structure as the storage portion.

[Explanation of symbols]

 1 Case main body 2 Measurement indication value display section 3 Terminal cover 3a Upper edge section 4 Storage cover 5 Storage section 6 Notch section 7 Convex section 8 Terminal block section 9 Storage cover receiving claw 10 Storage cover temporary fixing hole 11 Hooking claw 12 Drawout prevention Claw 13 Insertion claw 14 Screw hole 15 Sealing part 16 Sealing screw 16a Head 17 Hole 18 Sealing plate 19 Sealing hole 20 Sealing wire 21 Sealing lead 22 Inserting claw guide 23 Screw hole 24 hole

Claims (1)

[Claims] 1. A measurement instruction value display section on the upper part of the front of the case,
A case body in which a terminal block part is arranged at a lower part and a storage part for storing a replacement part is arranged in an intermediate part, a storage cover for covering the storage part so that the replacement part is not taken out, and a terminal for covering the terminal block part. In an instrument provided with a cover, a storage cover attachment for forming the terminal block part at a position retracted from the storage part and inserting the storage cover from the lower front side of the case main body to attach the storage cover to the storage part. Means, a terminal cover attaching means for attaching the terminal cover to the terminal base portion from the front of the case body, and a sealing means for sealing the terminal cover, and a notch is provided in the storage portion. The storage cover is provided with a convex portion that fits into the cutout portion when the storage cover is attached to the storage portion, and the cutout portion is provided when the storage cover is attached to the storage portion. The fitting position of the terminal cover to the terminal block part is set so as to hold the fitting with the cutout part while pressing the convex part fitted to the part from below and sealing the storage part. An instrument with a structure.