JPH062747U - Electronic device housing - Google Patents

Abstract

(57) [Abstract] [Purpose] To realize a mechanism for holding a cover with a simple structure in a state where the inside of a base that houses electronic circuit components is exposed to the outside. [Structure] The cover 2 is provided on one edge side of the cover surface 21.
0 is rotatably attached to the base 10. At least the one end edge side of the cover surface 21 is formed when the cover 20 is rotated by a predetermined angle with respect to the base 10.
The cover wall 22 is bent and extended from the cover surface 21 so as to abut the ring-shaped wall 12 of 0. At the position where the cover wall 22 of the ring-shaped wall 12 abuts,
The first end of the cover wall 22 is capable of getting over, and after coming over, contacts the outer surface of the tip of the cover wall 22.
And a second stopper 35L that engages with the engagement groove 26L formed in the inner wall surface of the cover wall 22 and holds the cover wall 22 together with the first stopper 34. .

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an electronic device housing installed outdoors, for example.

[0002]

[Prior art]

 Automatically monitors gas meters, automatic switching regulators, gas leak alarms, etc. used at homes and offices by using telephone lines, gas checkup, cylinder remaining amount, cylinder switching, security monitoring A system that centrally monitors information etc. is known.

FIG. 8 shows an example of a housing of an electronic device used as a terminal device of this type of system. In this example, the terminal device is installed outdoors, so that it is a waterproof type. is there.

In FIG. 8, reference numeral 1 denotes a base, which has a U-shaped cross section and is formed in a box shape having an opening 1A on one surface side. Although not shown, a circuit device of an electronic device is accommodated in the base 1. Reference numeral 2 is a cover that closes the opening 1A of the base 1 to form a closed box as a whole. Then, a rubber packing 3 having the same shape as the end surface 1B of the base 1 is arranged between the ring-shaped end surface 1B on the opening 1A side of the base 1 and the contact surface of the cover 2, and the base 1 and the cover 2 provide The base 1 and the cover 2 are fixed by the screws 4, 5, 6, and 7 while the rubber packing 3 is sandwiched.

[0005]

[Problems to be solved by the device]

 By the way, an electronic device as a terminal device of this type of system needs to inspect the inside of its housing for maintenance and the like. However, in the above-mentioned structure of the housing, it is necessary to remove the screws 4 to 7 to remove the cover 2 from the base 1, which is a troublesome work.

Therefore, it is conceivable that the cover can be opened and closed with respect to the base, but in order to prevent raindrops from entering the electronic device casing after rain, the upper side of the casing installed on the outdoor wall is prevented. In the above, a structure is preferable in which the cover is rotatably connected to the base and can be rotated so as to lift the cover upward. However, in that case, unless the cover is rotated and held in the lifted state, the cover will close naturally, so the worker must perform maintenance work while holding the cover down. However, there was a risk that it would interfere with the work.

In view of the above points, the present invention is an electronic device casing in which the cover is rotatable with respect to the base so that the cover can be opened and closed, and the cover can be held in an open state with a simple configuration. Intended to provide the body.

[0008]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the electronic device housing according to the present invention has an opening 10A on one surface side to form a space for housing the electronic device in correspondence with the reference numerals of the embodiments described later. The base 10 including the ring-shaped wall 12 and the cover 20 including the cover surface 21 for closing the opening 10A of the base 10 with which the end surface 12E of the ring-shaped wall 12 abuts. The cover 20 is an electronic device housing rotatably attached to the base 10, and at least the one end edge side of the cover surface 21 is formed when the cover 20 is rotated by a predetermined angle with respect to the base 10. It has a wall plate 22 that is bent and extended from the cover surface 21 so as to hit the ring-shaped wall 12 of the base 10. At the position where the wall plate 22 abuts, the tip of the wall plate 22 can be climbed over, and after passing over, the first stopper 34 that contacts the outer surface of the tip of the wall plate 22 is formed, and the wall plate 22 is also formed. Second stoppers 35L and 35R that engage with an engaging portion provided on the inner wall surface of 22 and sandwich the wall plate together with the first stopper are formed.

[0009]

[Action]

 In the present invention having the above-described structure, when the cover 20 is rotated with respect to the base 10 by, for example, 90 degrees, the tip of the wall plate 22 collides with the first stopper, and then the first stopper is crossed over. The outer surface of the wall plate 22 is in contact with the inner wall surface of the stopper, and the engaging portion of the inner wall surface of the wall plate 22 is engaged with the second stopper. As a result, the wall plate 22 is clamped by the first stopper and the second stopper, whereby the cover 20 is held in the open state of 90 degrees with respect to the base 10.

When closing the cover, the cover may be rotated in a direction opposite to the direction in which the cover is opened. When a force is applied to the cover 20 in this manner, the tip of the wall plate 22 gets over in the direction opposite to that when the first stopper 34 is opened, and the engagement between the second stopper and the engagement portion on the cover side. When the cover 20 is released, the cover 20 becomes rotatable again, and the cover can be easily returned to the state of closing the base opening.

[0011]

【Example】

 An embodiment of an electronic device housing according to the present invention will be described below with reference to the drawings by taking an example of a waterproof type which is mounted on an outdoor wall of a house for the above-mentioned system terminal. .

FIG. 2 is a perspective view of the housing of this embodiment in a state where the internal space is visible. 3A is a front view of the electronic device casing of this example mounted on a wall, FIG. 3B is a right side view thereof, FIG. 3C is a bottom view thereof, and FIG. 3D is a top view thereof. Further, FIG. 4 is a sectional view taken along line XX of FIG. 3A. Further, FIG. 1A is a sectional view taken along line YY of FIG. 3A.

As shown in these drawings, the electronic device housing of this example includes a base 10 and a cover 20 which are made of, for example, synthetic resin having elasticity. In this case, the base 10 is attached to the wall of an outdoor house, for example, by screwing, and is installed as shown in the front view of FIG. 3A.

As shown in FIG. 2, the base 10 is formed in a box shape with a U-shaped cross section by a base bottom surface 11 and a ring-shaped wall 12 extending from the base bottom surface 11. One side is an opening 10A. Has become. As shown in FIG. 4, the end surface 12E of the ring-shaped wall 12 has a rounded outer peripheral side.

Then, although not shown, an electronic circuit component such as a printed wiring board on which an IC or an electronic device is arranged is housed in a space inside the base 10 formed by the ring-shaped wall 12. Reference numerals 17 and 18 denote cable outlets that connect the electronic components to the outside of the housing. These are made of rubber, for example, and can be stretched to provide a waterproof seal with the cable.

The outer peripheral side surface 12S of the ring-shaped wall 12 of the base 10 is provided with an eaves portion 13 extending outward from a position lower than the height of the ring-shaped wall 12 over the entire outer peripheral side surface 12S. Has been.

In addition, inside the base 10, a battery housing portion 14 that serves as a power source for the electronic circuit components housed therein is formed. In the case of the example shown in the figure, the battery storage portion 14 is configured to be capable of storing a small battery having a small capacity and a large battery having a large capacity. That is, the battery housing portion 14 is formed by surrounding the rectangular area with the frame 14A, and the two pins 14B and 14C are planted in the rectangular area as shown in the drawing. Then, in a normal state, the small battery is housed by using one or both of the two pins 14B and 14C. When the battery is to be installed and used in a place where battery consumption is heavy, such as in a cold region, these two pins 14B and 14C should be folded to accommodate a large battery.

Next, as shown in FIG. 2, the cover 20 is configured so that the end surface 12E of the ring-shaped wall 12 of the base 10 abuts and contacts to close the opening 10A of the base 10 (see FIG. 4). The cover surface 21 and the cover wall 22 formed of a ring-shaped wall extending from the cover surface 21 are formed in a box shape having a U-shaped cross section, and one surface side is an opening 20A. The size of the cover surface 21 is set to cover not only the opening 10A of the base 10 but also the eaves portion 13. Further, the height of the cover wall 22 is set so as to extend further below the eaves portion 13 when the cover 20 is placed on the base 10, as shown in FIG. As shown in FIG. 4, when the cover 20 is placed on the base 10, a slight gap 41 is formed between the inner wall surface of the cover wall 21 and the tip end surface of the eaves portion 13. .

Further, as shown in FIG. 2, the cover surface 21 is provided with a ring-shaped ridge 23 that forms a ring slightly larger than the ring-shaped wall 12 of the base 10. That is, the ring-shaped ridge 23 projects from a position outside the contact portion between the cover surface 21 and the end surface 12E of the ring-shaped wall 12 of the base 10. Therefore, as shown in FIG. 4, when the base 10 is covered with the cover 20, a gap 42 is formed between the inner wall surface of the ring-shaped ridge 23 and the outer wall surface of the ring-shaped wall 12 of the base.

Further, the height of the ring-shaped ridge 23 from the cover surface 21 is selected to be slightly lower than the height of the portion of the ring-shaped wall 12 of the base 10 above the eaves portion 13. Therefore, as shown in FIG. 4, when the end surface 12E of the ring-shaped wall 12 abuts the cover surface 21, a gap 43 is formed between the tip end surface of the ridge 23 and the eaves portion 13. In this case, the size of the gap 43 is smaller than that of the gaps 41 and 42, and the size is such that the capillary phenomenon sufficiently acts. The size of these gaps is selected to be, for example, 0.1 to 0.4 mm. Even at the contact portion between the cover surface 21 and the end surface 12E of the ring-shaped wall 12, since the outer peripheral side of the end surface 12E is rounded, a gap 44 similar to the gap 43 is formed in that portion as well. .

Next, in this example, at the upper position of the front view of the base 10 in FIG. 3A, the cover 20 is attached to the base 10 so as to be rotatable in the direction indicated by the arrow in FIG. Hereinafter, this rotation mechanism will be described with reference to FIGS. 1, 5, 6, and 7. FIG. 5 is a view showing the upper surface of the housing of this example in a state where the base 10 and the cover 20 are separated. FIG. 6 is a view of the upper side of the base 10 as viewed from the bottom surface 11 side. Further, FIG. 7 is a view of the upper side of the base 10 as viewed from the side.

That is, below the eaves portion 13 at the upper position of the front view of FIG. 3A of the base 10, a plate portion 15 L provided with the rotation shaft 31 and a plate provided with the rotation shaft 32 are provided at positions separated by a predetermined distance. The section 15R is provided. On the other hand, on the cover wall 22 of the cover 20, a plate portion 24L parallel to the plate portions 15L and 15R is arranged at a position wider than the distance between the plate portions 15L and 15R by the thickness of the plate portions 15L and 15R. , 24R are provided. Then, through holes 33 and 34 into which the rotary shafts 31 and 32 are inserted are bored in the plate portions 24L and 24R, and the rotary shafts 31 and 32 are inserted into the through holes 33 and 34, and the base 10 On the other hand, the cover 20 is rotatably connected.

In the case of this example, the central portion 22P of the cover wall 22 on the upper side of the housing is slightly projected as shown in FIG. 5, and when the cover 20 rotates about 90 degrees with respect to the base 10. The end surface of this portion 22P abuts the ring-shaped wall 12 of the base 10. Then, at the position where the central portion 22P of the cover wall 22 of the ring-shaped wall 12 abuts, the tip of the ring-shaped wall 12 has a curved surface so that the central portion 22P of the cover wall 22 can be overcome by the rotation of the cover 20. A first stopper 34 formed of a protruding portion is formed.

In addition, on both sides of the ring-shaped wall 12 in the longitudinal direction of the first stopper 34, a distance slightly larger than the thickness of the cover wall 22 in the height direction of the ring-shaped wall. Plate-shaped second stoppers 35L and 35R that project in parallel with the eaves portion 13 are formed on the table. Since the base material of the plate-shaped second stoppers 35L and 35R is synthetic resin, they can be biased in the plate thickness direction. Projections 36L, 36R projecting toward the bottom surface 11 side of the base 10 are formed at the tips of the second stoppers 35L, 35R. The tips of the protrusions 36L and 36R are curved surfaces having a substantially semicircular cross section.

On the other hand, when the cover 20 is rotated to the position where the central portion 22P of the cover wall 22 abuts on the ring-shaped wall 12, the protrusions 36L and 36R of the second stoppers 35L and 35R are in contact with each other. As shown in FIGS. 1 and 5, recessed grooves 26L and 26R into which the protrusions 36L and 36R of the second stoppers 35L and 35R are fitted are formed in the inner wall surface position of the above. The inner wall surface of the upper cover wall 22 has a projection 27 that engages with the eaves portion 13 at a position immediately below the eaves portion 13 when the cover 20 is placed on the base 10, as shown in FIG. Is provided.

Further, in this example, a part of the eaves portion 13 located on the bottom side of the lower side of the front view of FIG. 3A is cut out, and this portion is parallel to the protruding direction of the eaves portion 13 and the ring-shaped wall 12. A stopper 16 having a shape having elasticity in various directions is formed. An engagement protrusion 16P is formed on the stopper 16. On the other hand, an engaging elongated hole 25 is formed in the cover wall 22 of the cover 20 at a position corresponding to the engaging protrusion 16P of the stopper 16.

When the cover 20 is rotated about the rotary shafts 31 and 32 and is placed on the base 10, the cover wall 22 causes the stopper 16 to be biased toward the ring-shaped wall 12. Further, when the stopper 16 is biased in the direction of the cover surface 21 against the biasing force while the cover 20 is pressed toward the base 10, the engaging protrusions 16P of the stopper 16 are engaged with the engaging elongated hole 25. When fitted, the cover 20 is in a state in which it is always elastically biased toward the base 10 by the biasing force of the stopper 16. At this time, the cover 20 is also elastically pressed against the base 10 due to the presence of the protrusion 27 also on the upper side of the housing.

In this way, when the cover 20 is covered with the base 10 and is locked to the base 10, the end surface 12E of the ring-shaped wall 12 of the base 10 is covered with the cover 20 as shown in FIG. The base 10 and the cover 20 are in contact with the cover surface 21, and the inside of the base 10 is hermetically sealed.

Then, in this state, as shown in FIG. 4, in the fitting portion between the base 10 and the cover 20, the above-mentioned gaps 41 to 44 are formed. In addition, a space 45 surrounded by the ridge 23, the cover surface 22, and the eaves portion 13 is formed. The gaps 43 and 44 act as capillaries. The gap 42 becomes an enlarged capillary tube. The water 60 that has entered this fitting portion stays in the portion with the gap due to the ambient pressure as shown in FIG. Therefore, the water accumulated in the gap acts as a seal.

Therefore, in this example, it is not necessary to provide a waterproof seal using the sealing material as in the conventional example shown in FIG. 8, and the cost is reduced accordingly.

Next, when the cover 20 of this housing is opened, the engagement between the stopper 16 and the engagement elongated hole 25 is released, and the cover 20 is rotated 90 degrees about the rotation shafts 31 and 32. Then, the cover 20 goes through the intermediate state shown in FIG. 1C, and the central portion 22P of the cover wall 22 abuts against the first stopper 34 and is further rotated. After passing through the stopper 34, as shown in FIG. 1B, the outer surface of the cover wall 22 and the inner wall surface of the first stopper 34 are in contact with each other. At the same time, the tip projections 36L and 36R of the second stoppers 35L and 35R are fitted into the concave grooves 26L26R on the inner wall surface of the cover wall 22. Therefore, the cover wall 22 is held in a state of being clamped by the first and second stoppers 34 and 35L, 35R, and the cover 20 is rotated 90 degrees with respect to the base 10 in the open state of FIG. 1B. To be suspended. Whether or not the cover 20 is fixed in the state shown in FIG. 1B can be confirmed by a click sound when the central portion 22P of the cover wall 22 passes over the first stopper 34.

In this way, the cover 20 can be rotated with respect to the base 10 and fixed in the opened state, so that the installation work and maintenance work of the electronic device are facilitated. Moreover, since the cover 20 can be rotated up to 90 degrees and lifted up to the horizontal state, the operator can easily see the inside of the housing, the cover does not interfere with the work, and water drops on the cover surface 21 after rain. Even if it is attached, it can be prevented from invading the portion of the electronic circuit component in the base 10.

When closing the cover 20, in the state of FIG. 1B, a force to push the cover 20 downward is applied from above. Then, the central portion 22P of the cover wall 22 gets over the first stopper 34 in the direction opposite to the opening direction (this can be confirmed by the click sound), and the second stoppers 35L, 35R and the concave grooves 26L, 26R is released, the cover 20 can be rotated, and the cover 20 can be placed on the base 10 and closed as described above.

In the case of this example, as described above, the waterproof seal can be realized only by locking the cover 20 to the base 10 by the stopper 16, and the cover is screwed to the base as in the conventional case. This eliminates the need for work such as the above, and also in this respect, the work of installing the housing and the maintenance work after the installation become easy.

It should be noted that the case in the above example has a rectangular cross section, but the shape of the case is not limited to this, and needless to say, it can be applied to various shapes.

[0036]

[Effect of device]

 As described above, in the electronic device housing according to the present invention, the cover can be attached so as to be rotatable with respect to the base, and the cover can be held in an open state with respect to the base. Further, according to this invention, the structure for holding the cover in a state of being rotated by a predetermined angle with respect to the base includes the first and second stoppers integrally provided on the base and the inner wall surface of the cover. Since it can be realized only by the engaging portion, the structure is simple and no separate parts other than the base and the cover are particularly required.

[Brief description of drawings]

FIG. 1 is a diagram for explaining a main part of an embodiment of an electronic device housing according to the present invention.

FIG. 2 is a perspective view of an embodiment of an electronic device housing according to the present invention.

FIG. 3 is a diagram for explaining an entire embodiment of an electronic device casing according to the present invention.

FIG. 4 is a sectional view taken along line XX of FIG. 3A.

FIG. 5 is a diagram for explaining a configuration of a main part of an embodiment of an electronic device casing according to the present invention.

FIG. 6 is a diagram for explaining a configuration of a main part of an embodiment of an electronic device casing according to the present invention.

FIG. 7 is a diagram for explaining a configuration of a main part of an embodiment of an electronic device casing according to the present invention.

FIG. 8 is an exploded perspective view for explaining an example of a conventional waterproof electronic device housing.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 base 10A opening 11 base bottom surface 12 ring-shaped wall 12E end surface of ring-shaped wall 13 eaves part 15L, 15R plate part 20 cover 20A opening 21 cover surface 22 cover wall 23 ring-shaped ridge 24L, 24R plate part 26L, 26R engagement Recessed groove 31, 32 Rotating shaft 34 First stopper 35L, 35R Second stopper

Claims (1)

[Scope of utility model registration request] 1. A base having an opening on one surface side, the base having a ring-shaped wall for forming a space for housing an electronic device therein, and an end surface of the ring-shaped wall abuts against the base to close the opening of the base. A cover provided with a cover surface of the electronic device housing, wherein the cover is rotatably attached to the base at one end edge side of the cover surface, and at least the one end edge side of the cover surface is A ring plate of the base, the wall plate being bent and extended from the cover surface so as to abut the ring-shaped wall of the base when the cover is rotated by a predetermined angle. At the position of the wall where the wall plate abuts, the tip of the wall plate can get over, and after getting over, a first stopper that comes into contact with the outer surface of the tip of the wall plate is provided. An electronic device housing formed with a second stopper that is formed and that engages with an engaging portion provided on the inner wall surface of the wall plate and that sandwiches the wall plate with the first stopper.