JP2001227991A - Casing structure of measuring device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a casing structure of a measuring device stably supplying power to power supply points in a printed circuit board without interposing a lead wire even if the casing has a curvature or a dimensional error. SOLUTION: In this structure, a case part 11 on one side has female screw parts 14 facing and coinciding with through holes 17 corresponding to a pair of the power supply points 16 each having the through hole 17 bored in the printed circuit board 15, while a case part 21 on the other side is projectingly provided with a pair of boss parts 23 in the counter parts to the power supply points 16 each having a screw insertion hole 26 penetrating from a the external face 22b of a face abutment part 22 to its tip side, interposed with an electroconductive compression coil spring 27 having projected top parts 27a. The case part 21 also has a battery fixed part 28 freely disposed with a battery B having one electrode connected to one side of the coil spring 27 and the other electrode connected to the other side. A screw material 31 is screwed into the female part 14 from the screw insertion hole 26 to integrate the power supply point 16 and the coil spring 27 with contacting the power supply point 16 with the coil spring 27.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a housing structure of a measuring instrument which can be suitably used for an automatic recorder for continuously measuring environmental conditions such as temperature and humidity.

[0002]

2. Description of the Related Art FIGS. 3 and 4 illustrate a housing structure conventionally used for a measuring instrument such as an automatic recorder.

[0003] Among them, the housing structure shown in FIG. 3 connects an insertion plug 2a provided on a printed circuit board 2 provided on one side case part 1 to a lead wire 4 drawn out from a battery B provided on the other side case part 3. Power can be supplied by being inserted into the attached socket 4a.

The housing structure shown in FIG. 4 has a pair of power feeding points 6 on a printed circuit board 6 provided in one side case portion 5.
a, 6a are provided in advance, and the other case part 7 is provided.
Is connected to a pair of conductive compression coil springs 9, 9 connected separately to the power supply points 6a, 6a so that power can be supplied.

[0005]

However, according to the housing structure shown in FIG. 3, the wiring of the lead wire 4 is required, which not only increases the number of assembling steps, but also increases the one-side case 1 and the other-side case. When the lead wire 3 is separated from the lead wire 3, the lead wire 4 may be torn off.

In addition, according to the housing structure shown in FIG. 4, if any one of the one-side case 5 and the other-side case 7 has a bend or a dimensional error, the power supply point 6a of the printed circuit board 6 is formed. , 6a, the conductive compression coil springs 9, 9 cannot be accurately brought into contact with each other.

[0007] In view of the above-mentioned problems encountered in a conventional housing structure, the present invention not only eliminates the need for wiring lead wires, but also causes temporary bending and dimensional errors in the one-side case portion and the other-side case portion. Another object of the present invention is to provide a housing structure of a measuring instrument capable of stably supplying power to a power supply point of a printed circuit board.

[0008]

Means for Solving the Problems The present invention has been made to achieve the above-mentioned object, and its structural feature is that a printed circuit board provided on one side of the case is provided with a battery provided on the other side of the case. In the housing structure of the measuring device combined with the power supply freely and the opening surfaces facing each other, the one-side case portion is provided at a position corresponding to a pair of power supply points in the printed circuit board, each having a through hole. At least a female screw portion provided under a positional relationship that faces the through hole is provided, and the other side case portion is provided with a conductive compression coil spring having a top protruding, and from the outer surface of the face plate portion. A pair of bosses having a screw insertion hole penetrating toward the distal end thereof and protruding from a site facing the power supply point, and one pole on one side of the conductive compression coil spring. On the other side And at least a battery stationary portion which is disposed so as to be able to freely place the battery by conducting the other pole separately.The one-side case portion and the other-side case portion are provided with a screw material through a screw insertion hole. By screwing on the female screw portion, the power supply point of the printed circuit board and the conductive compression coil spring can be freely combined and integrated in a state where they are in contact with each other.

In this case, each of the boss portions is provided with a conductive compression coil spring interposed therebetween so that a top portion protrudes from the distal end surface of the small-diameter portion provided on the distal end side, and the fine boss portion is disposed from the outer surface of the face plate portion. A screw insertion hole consisting of a large diameter portion and a small diameter portion penetrating into the diameter portion is provided, and a conductive compression coil spring that is provided to project from a portion facing the through hole and is interposed is substantially the same as the small diameter portion. It is preferable that a peripheral wall portion surrounding the outer peripheral side at a height is provided and formed.

[0010]

FIG. 1 is an exploded perspective view showing an example of the present invention in a state where one side case portion and another side case portion are separated from each other, and FIG. 2 is a diagram showing one side case portion and the other side portion. It is a longitudinal cross-sectional view which expands and shows the principal part at the time of assembling the case part integrally.

According to these figures, for example, the one-side case part 11 used as the upper case and the other-side case part 21 used as the lower case are different from the printed circuit board 15 provided in the one-side case The power supply from the battery included in the side case portion 21 can be freely performed, and the mutual opening surfaces 11a,
21a are formed so that they can be combined face-to-face.

In this case, the one-side case portion 11 is formed in a position corresponding to the pair of power supply points 16, 16 in the printed circuit board 15 corresponding to the pair of power supply points 16, 16, so as to face the through hole 17. And at least the female screw portion 14 provided by the above.

This will be described more specifically with reference to the illustrated example. One side case portion 11 includes an inner surface 12 of a face plate portion 12.
A support member including a pillar portion 13 protruded to separately support the printed circuit board 15 is disposed on the support member a. The support member is separated from the face plate portion 12 by the support member. The printed circuit board 15 is held in a state where the surface height of the opening surface 11a and the height of the exposed surface 15a match.

Moreover, the support surface 13a of the support 13 has
When the one-side case portion 11 and the other-side case portion 21 are combined, a female screw portion 14 made of, for example, an embedded nut is provided under a positional relationship that faces the through hole 17 of the printed circuit board 15 in a face-to-face manner. .

On the other hand, the other side case portion 21 is provided with a conductive compression coil spring 27 having a top portion 27a protruding, and a screw insertion penetrating from the outer surface 22b of the face plate portion 22 toward the tip end thereof. Feeding point 1 with hole 26
6 and a pair of bosses 22, 22 protruding from a portion facing
And a battery B in which one pole is electrically connected to one side of the conductive compression coil spring 27 and the other pole is electrically connected to the other side.
And a battery stationary portion 28 which is freely disposed.

This will be described more specifically with reference to the illustrated example. The other case 21 has a pair of bosses 23,23.
Is provided with a conductive compression coil spring 27 having a length such that a top portion 27a protrudes from a distal end surface 24a of a small-diameter portion 24 provided on the distal end side, and the one side case portion 11 and the other side case portion 21 are provided. Are protruded so as to be located at a portion facing the support portion 13 when the combination of. Moreover, each boss portion 23 is separated from the outer surface 22 b of the face plate portion 22 by the small-diameter portion 2.
4 is formed with a screw insertion hole 26 composed of a large diameter portion 26a and a small diameter portion 26b penetrating into the hole 4. In this case, each boss portion 23 has a peripheral wall portion 25 surrounding the interposed conductive compression coil spring 27 from the outer peripheral side at substantially the same height as the small diameter portion 24.
Is preferably formed.

On the inner side surface 22a of the other side case portion 21, a battery mounting portion 28 formed in a box shape, for example, in which one or more desired number of batteries B can be stably mounted in parallel or in series. Are disposed in the vicinity of the pair of bosses 23, 23.

In this case, the battery stationary part 28 is formed to include an anode terminal fitting 29 that contacts one side of the anode of the battery B, ie, the anode, and a cathode terminal fitting 30 that contacts the other side of the battery, ie, the cathode side. Have been. Moreover, the anode terminal fitting 29 is connected to one of the conductive compression coil springs 27 via the lead portion 29a.
And the cathode terminal fitting 30 are preferably formed integrally with the other conductive compression coil spring 27 via the lead portion 30a. However, if necessary, the anode terminal fitting 29
Alternatively, the lead portion drawn out of one conductive compression coil spring 27 may be connected to the cathode terminal fitting 30, and the lead portion drawn out of the other conductive compression coil spring 27 may be connected to the cathode terminal fitting 30.

In this way, the one-side case portion 11 and the other-side case portion 21 are screwed with the screw member 31 to the female screw portion 14 through the screw insertion hole 26 as shown in FIG. Can be integrally assembled under the condition that the conductive compression coil spring 27 is in contact with the power supply point 16 of FIG.

Next, the operation and effect of the present invention having the above structure will be described. The opening surface 21a of the other case portion 21 and the opening surface 11a of the one case portion 11 face each other.
In addition, the through holes 17 of the printed circuit board 15 and the conductive compression coil spring 27 are combined with each other under the arrangement relationship of facing each other.

After the one-side case portion 11 and the other-side case portion 21 are combined under such an arrangement relationship, the screw member 31 is connected to the outer surface 22b of the other-side case portion 21 through the screw insertion hole 26. , And screwed into the female screw portion 14 of the column 13 protruding from the inner surface of the one-side case 11 to integrate the one-side case 11 and the other-side case 21.
In this case, the screw insertion hole 26 has the large diameter portion 26a and the small diameter portion 26.
2, the head of the screw member 31 is supported on a shelf formed at the boundary between the large diameter portion 26a and the small diameter portion 26b as shown in FIG. The screw member 31 can be securely screwed. When the screw insertion hole 26 is formed with the same inner diameter, a screw member (not shown) whose head is supported on the outer surface 22 b of the other case portion 21 is screwed into the female screw portion 14. I will wear it.

This will be described in more detail. For example, the one-side case portion 11 has an opening surface 11 a of the one-side case portion 11.
The female screw 14 provided on the support surface 13a of the support 13 and the through-hole 17 provided at the power supply point 16 are face-to-face aligned under the condition that the height of the surface 15 and the height of the exposed surface 15a are matched. The circuit board 15 is held. Further, a pair of bosses 23 having a screw insertion hole 26 is provided on the other side case portion 21 so as to protrude under a positional relationship that faces the through hole 17 of the power supply point 16. Diameter part 2
The conductive compression coil springs 27 are interposed and arranged separately through the respective 4.

In addition, since the conductive compression coil spring 27 is arranged so that the top 21a protrudes from the top surface 24a of the small diameter portion 24, the one-side case 11 and the other-side case 21 are slightly bent. Even if a dimensional error occurs, the conductive compression coil spring 27 is used for each power supply point 16 of the printed circuit board 15 in the one-side case portion 11 by screwing the screw member 31 to the female screw portion 14 to use the spring pressure. The contact can always be made accurately.

Also, the one-side case portion 11 and the other-side case portion 2
Since no wire material such as the lead wire 4 in FIG. 3 is interposed between the first case portion 1 and the first case portion 1, it is possible to eliminate the occurrence of disconnection when the one-side case portion 11 and the other-side case portion 21 are separated from each other. .

When each boss portion 23 has a peripheral wall portion 25 which is substantially the same height as the small-diameter portion 24, a conductive compression coil spring 27 is interposed between the small-diameter portion 24 and This can be held more stably. When each boss 23 does not have the small-diameter portion 24, the conductive compression coil spring 27 can be fixedly arranged by pressing the outer peripheral portion of the distal end thereof.

[0026]

As described above, according to the present invention, the opening surface of the other case portion and the opening surface of the one case portion face each other,
In addition, the through holes of the printed circuit board and the screw insertion holes of the boss portion are combined with each other under the arrangement relationship of facing each other, and the screw material is screwed into the female screw portion of the column portion of the one side case through the screw insertion hole. By using the spring pressure, the conductive compression coil springs corresponding to each power supply point on the printed circuit board are always in accurate contact even if there is some bending or dimensional error in the one side case part or the other side case part. And can be integrated.

Moreover, since no wire is interposed between the one-side case and the other-side case, no disconnection occurs even if the one-side case and the other-side case are separated.
When each boss has a peripheral wall, a conductive compression coil spring can be interposed in the small-diameter portion to more stably hold the small-diameter portion.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an example of the present invention in a state where one side case part and another side case part are separated from each other.

FIG. 2 is an enlarged longitudinal sectional view showing a main part when the one-side case part and the other-side case part shown in FIG. 1 are integrally assembled.

FIG. 3 is an exploded perspective view showing a conventional example in a state where one side case portion and another side case portion are separated from each other.

FIG. 4 is an exploded perspective view showing another conventional example in a state in which one side case portion and the other side case portion are separated from each other.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 One side case part 11a Opening surface 12 Face plate part 12a Inner side surface 13 Support part 13a Support surface 14 Female screw part 15 Printed circuit board 15a Surface 16 Power supply point 17 Through hole 21 Other case part 21a Opening surface 22 Face plate part 22a Inner side surface 22b Outer side surface 23 Boss part 24 Small diameter part 24a Tip surface 25 Peripheral wall part 26 Screw insertion hole 26a Large diameter part 26b Small diameter part 27 Conductive compression coil spring 27a Top part 28 Battery stationary part 29 Anode terminal part 29a Lead part 30 Cathode terminal part 30a Lead part 31 Screw material B Battery

Claims (2)

[Claims] 1. A casing structure of a measuring instrument in which a printed circuit board provided in one side case portion is freely fed from a battery provided in another side case portion and is combined with their open surfaces facing each other, wherein the one side case is provided. The part includes at least a female screw portion provided in a position corresponding to the pair of power supply points having a through hole in the printed circuit board in a facing relationship with the through hole. Has a screw insertion hole penetrating from the outer surface of the face plate portion toward the distal end thereof, with a conductive compression coil spring having a protruding top portion interposed therebetween, and having a projecting portion facing the power supply point. A pair of bosses provided and one pole on one side of the conductive compression coil spring, and the other pole on the other side were freely disposed so that the battery could be stationary by conducting the other pole separately. At least a battery station The one-side case portion and the other-side case portion contact the power supply point of the printed circuit board and the conductive compression coil spring by screwing a screw material to the female screw portion through a screw insertion hole. A housing structure of a measuring instrument characterized by being formed so as to be freely combined in an integrated state. 2. Each of the boss portions is provided with a conductive compression coil spring interposed therebetween such that a top portion protrudes from a distal end surface of a small-diameter portion provided on a distal end side, and the small-diameter portion extends from an outer surface of a face plate portion. A screw insertion hole consisting of a large-diameter portion and a small-diameter portion that penetrates into the portion is provided, and a conductive compression coil spring that is protruded from a portion facing the through-hole and is interposed is substantially flush with the small-diameter portion. 2. A housing structure for a measuring instrument according to claim 1, wherein a peripheral wall portion surrounding the outer peripheral side is provided.