CN216483271U - Ultrasonic flowmeter - Google Patents
Ultrasonic flowmeter Download PDFInfo
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- CN216483271U CN216483271U CN202122388547.1U CN202122388547U CN216483271U CN 216483271 U CN216483271 U CN 216483271U CN 202122388547 U CN202122388547 U CN 202122388547U CN 216483271 U CN216483271 U CN 216483271U
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Abstract
The utility model provides an ultrasonic flowmeter which can prevent the operation button of the measuring substrate from being operated maliciously and has a display part shell forming two chambers. The ultrasonic flowmeter includes a measurement substrate (50), a display unit case (20), and a partition wall (22) that divides the internal space of the display unit case into a 1 st chamber (20a) and a 2 nd chamber (20 b). The ultrasonic flowmeter further includes: a plate (60) which is housed in the 2 nd chamber and covers the opening of the 2 nd chamber side of the housing hole (27); a screw insertion hole (26) formed through the partition wall at a position different from the receiving hole; and a screw member (47) for fixing the plate to the partition wall, wherein the screw member is inserted into the screw insertion hole from the 1 st chamber and is screwed with the screw stop hole of the plate. According to this ultrasonic flowmeter, the screw member and the plate cannot be removed from the 2 nd chamber side, and it is possible to prevent an unintended operation from being performed on the operation button.
Description
Technical Field
The present invention relates to ultrasonic flow meters.
Background
The conventional ultrasonic flowmeter 100 shown in fig. 3 includes a measurement substrate 150 having a display unit 152 on the front surface and operation buttons 151 on the back surface. In order to prevent the operation buttons 151 exposed outside the display unit case 120 housing the display unit 152 from being operated by the user, the operation buttons 151 are covered by fixing the plate 160 with screws 161 at positions corresponding to the operation buttons 151 in the display unit case 120. The screw 161 is a so-called seal screw, and a through hole is formed in a side surface of the head. Screws 131 and 141 as seal screws are also used for fixing the measurement unit 130 and the cover 140. These seal screws 161, 131, and 141 are bound together by passing one steel wire 170 through holes formed in the head thereof, and when the steel wire 170 is not cut, the seal screws cannot be removed.
SUMMERY OF THE UTILITY MODEL
Problem to be solved by utility model
However, in recent years, there has been a demand for addition of a unit such as a wireless unit (addition of specifications), and an ultrasonic flowmeter 200 in which two chambers are formed inside a display unit case 220 as shown in fig. 4 has been proposed. In the ultrasonic flowmeter 200, two chambers are formed inside the display unit case 220 by a partition wall, and an additional unit is attached to the 2 nd chamber facing the back cover 225 and can be operated by the user. The operation button 251 is housed inside the display unit case 220, but the user can open and close the back cover 225, and therefore the operation button 251 needs to be covered so as not to be operable from the 2 nd compartment. Therefore, the following is considered: as shown in fig. 4, the conventional seal screw and wire structure described above is employed in addition to the plate 260 for covering the operation buttons 251 from the 2 nd chamber. However, since the inside of the display unit case 220 needs to be kept airtight, there are problems as follows: the steel wire 270 cannot pass through the inside and outside of the display unit case 220, and the seal screws inside and outside the display unit case 220 cannot be bound together.
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an ultrasonic flowmeter in which a display housing forms two chambers while preventing an operation button of a measurement substrate from being operated by a malicious person.
Means for solving the problems
An ultrasonic flow meter according to an embodiment of the present invention,
the disclosed device is provided with: a measurement substrate having a display portion on a front surface thereof and an operation button on a rear surface thereof; a display unit case that houses at least the display unit; and a partition wall that divides an internal space of the display unit case into a 1 st chamber that does not require a user to enter and a 2 nd chamber that requires a user to enter, wherein the operation button is housed in a housing hole that penetrates the partition wall in a state where the measurement substrate is housed in the 1 st chamber and attached to the partition wall, and is operable from an opening on the 2 nd chamber side of the housing hole, the ultrasonic flow meter comprising: a plate which is housed in the 2 nd chamber and covers an opening of the housing hole on the 2 nd chamber side; a screw insertion hole formed by penetrating the partition wall at a position different from the receiving hole; and a screw member that fixes the plate to the partition wall, the screw member being inserted from the 1 st chamber through the screw insertion hole and screwed into a screw stopper hole of the plate.
According to this configuration, since the plate is fixed to the partition wall by inserting the screw member from the 1 st chamber into the screw insertion hole and further screwing the screw member into the screw locking hole of the plate, the head of the screw member is not exposed from the surface of the plate in the 2 nd chamber, but is positioned in the 1 st chamber in which the display portion on the front surface of the measurement substrate is housed. In this way, by housing the head of the screw member in the 1 st chamber housing the display portion which does not require the user to enter, if the user cannot enter the 1 st chamber, the screw member and the plate cannot be removed from the 2 nd chamber which requires the user to enter, and as a result, it is possible to prevent the user from operating the operation button maliciously. Therefore, even when the display section casing has two chambers, it is possible to prevent the operation button from being operated maliciously.
In the ultrasonic flow meter, it is preferable that a convex portion protruding toward the 2 nd chamber is provided in the partition wall at a position different from the receiving hole and the screw insertion hole, and the plate has a convex portion fitting portion that is fitted to the convex portion in a state where the plate is fixed to the partition wall by the screw member.
According to this configuration, since the convex portion protruding toward the 2 nd chamber is provided at a position different from the receiving hole and the screw insertion hole in the partition wall, and the plate is formed with the convex portion fitting portion that is fitted with the convex portion in a state where the plate is fixed to the partition wall by the screw, the plate is fixed to the partition wall by the screw and the convex portion, and thereby the plate is prevented from rotating, the plate can be further made less likely to be removed, and malicious operation of the operation button can be more effectively prevented.
In the ultrasonic flowmeter, it is preferable that a plurality of the screw insertion holes and the screw locking holes are formed in correspondence with each other, and the plate is fixed to the partition wall by a plurality of screw members corresponding to the plurality of screw insertion holes and the screw locking holes.
According to this configuration, since the plate is fixed to the partition wall by the plurality of screw members corresponding to the plurality of screw insertion holes and the screw locking holes, the plate functions as a rotation stopper, and therefore the plate can be further prevented from being easily removed, and malicious operation of the operation buttons can be more effectively prevented.
Effect of the utility model
According to the ultrasonic flowmeter of the present invention, the screw and the plate cannot be removed from the 2 nd chamber side, and the operation button can be prevented from being maliciously operated from the 2 nd chamber.
Drawings
Fig. 1 is a partial cross-sectional view showing an ultrasonic flowmeter according to an embodiment of the present invention.
Fig. 2 is a diagram showing a back surface of a partition wall of the ultrasonic flowmeter.
Fig. 3 is a partial sectional view showing a conventional ultrasonic flowmeter.
Fig. 4 is a diagram for explaining a state adopted in an ultrasonic flowmeter in which the structure of a conventional ultrasonic flowmeter is formed into two chambers.
Detailed Description
The ultrasonic flow meter of the present invention will be described below with reference to fig. 1 and 2.
As shown in fig. 1, the ultrasonic flow meter 10 includes: a display section casing 20; a partition wall 22 dividing an inner space of the display section casing 20 into a 1 st chamber 20a which does not require a user to enter and a 2 nd chamber 20b which requires a user to enter; a measuring section 30 for measuring a flow rate of the gas; and a measurement substrate 50 for controlling the measurement section 30. The display section case 20 includes: a lower wall portion 21; an upper wall 23 facing the lower wall 21 with a partition wall 22 interposed therebetween; a cover 24 for closing an opening of the 1 st chamber 20a of the display section case 20; and a back cover 25 for closing an opening of the 2 nd chamber 20b of the display section casing 20. The front cover 24 and the back cover 25 are fixed to the upper wall 23 and the lower wall 21 by screws 41 to 44, respectively. The display unit case 20 is fixed to the measurement unit 30 by screws 45 and 46.
A screw insertion hole 26 and a receiving hole 27 formed to penetrate the partition wall 22 are formed in a portion of the partition wall 22 near the upper wall portion 23. The measurement substrate 50 is provided with a display portion on the front surface 50a and an operation button 51 on the back surface 50b, and the operation button 51 is housed in the housing hole 27 and is operable from the opening of the housing hole 27 on the 2 nd chamber 20b side in a state where the measurement substrate 50 is housed in the 1 st chamber 20a of the display portion casing 20 and is attached to the surface 22a of the partition wall 22 facing the 1 st chamber 20 a.
As shown in fig. 2, a projection 28 is formed at a position different from the receiving hole 27 and the screw insertion hole 26 in the rear surface 22b of the partition wall 22 facing the 2 nd chamber 20b, and the projection 28 projects toward the inside of the 2 nd chamber 20 b.
As shown in fig. 1 and 2, the ultrasonic flow meter 10 further includes a plate 60, the plate 60 is housed in the 2 nd chamber 20b and provided on the partition wall 22 so as to cover the opening on the 2 nd chamber 20b side of the housing hole 27, a screw stopper hole 61 is formed in the plate 60 at a position corresponding to the screw insertion hole 26, a boss fitting portion 62 is formed in the plate 60 at a position different from the screw stopper hole 61, and the boss fitting portion 62 is fitted to the boss 28 in a state where the plate 60 is fixed to the partition wall 22 by a screw member 47.
Hereinafter, an assembling procedure of the ultrasonic flow meter 10 will be described.
As shown in fig. 1, the measurement substrate 50 is attached to the front surface 22a of the partition wall 22 such that the operation button 51 is received in the receiving hole 27 of the partition wall 22 from the 1 st chamber 20 a. Next, the plate 60 is fixed to the rear surface 22b of the partition wall 22 so as to cover the accommodation hole 27 by fitting and positioning the convex portion 28 to the convex portion fitting portion 62, inserting the screw member 47 from the 1 st chamber 20a through the screw insertion hole 26 fastened to the partition wall 22, and screwing the screw member 47 to the screw stopper hole 61.
The front cover 24 and the back cover 25 are fixed to the lower wall 21 and the upper wall 23 of the display unit case 20 by screws 41 to 44, respectively, and the display unit case 20 to which the front cover 24 and the back cover 25 are attached is fixed to the measurement unit 30 by screws 45 and 46.
Finally, the ultrasonic flowmeter 10 is assembled by being bound by passing a wire 70 through a through hole (not shown) formed in the head of each of the seal screws 41 and 45. In the ultrasonic flow meter 10 of the present embodiment, the front cover 24 is configured to be bound by passing through the wire 70 so as not to be opened and closed by a user, and the back cover 25 is configured to be opened and closed by attaching and detaching the screws 43 and 44.
The operational effects of the ultrasonic flow meter according to the present embodiment will be described below.
(1) Since the plate 60 is fixed to the partition wall 22 by inserting the screw member 47 from the 1 st chamber 20a through the screw insertion hole 26 and further screwing the screw member 47 into the screw stopper hole 61 of the plate 60, the head of the screw member 47 is positioned in the 1 st chamber 20a in which the display portion of the front surface 50a of the measurement substrate 50 is housed, without being exposed from the surface of the plate 60 in the 2 nd chamber 20 b. As described above, by housing the head of the screw member 47 in the 1 st chamber 20a housing the display portion which does not require the user to enter, if the user cannot enter the 1 st chamber 20a, the screw member 47 and the plate 60 cannot be detached from the 2 nd chamber 20b which can be entered by the user, and as a result, the user can be prevented from operating the operation button 51 maliciously. Therefore, even when the display section casing 20 forms two chambers, it is possible to prevent the operation button 51 from being operated maliciously.
(2) Since the plate 60 is fixed to the partition wall 22 by the screw member 47 and the projection 28 and functions to stop the rotation of the plate 60, the plate 60 can be further made less likely to be removed, and malicious operation of the operation button 51 can be more effectively prevented.
The above embodiment can be implemented by the following embodiment appropriately modified.
In the above embodiment, the plate 60 is fixed to the partition wall 22 by the projection 28 and the screw member 47, but instead of the projection 28 and the projection fitting portion 62, two screw members may be used to fix the plate 60 to the partition wall 22 by using separate screw insertion holes and screw stopper holes. Further, three or more screw insertion holes and screw locking holes may be provided in the partition wall 22 and the plate 60 at positions different from the receiving holes 27. Even in this case, the plate is fixed to the partition wall by a plurality of screw members corresponding to the screw insertion holes and the screw locking holes, and the plate is prevented from rotating, so that the plate can be prevented from being easily removed.
In the above embodiment, the plate 60 is fixed to the partition wall 22 by the projection 28 and the screw member 47, but for example, when the rotation of the plate 60 is suppressed by a nearby member, the projection 28 and the projection fitting portion 62 of the plate 60 may be omitted.
Claims (3)
1. An ultrasonic flow meter is provided, which comprises a flow meter body,
the disclosed device is provided with: a measurement substrate having a display portion on a front surface thereof and an operation button on a rear surface thereof; a display unit case that houses at least the display unit; and a partition wall that divides an internal space of the display housing into a 1 st chamber that does not require a user to enter and a 2 nd chamber that requires a user to enter, the operation button being housed in a housing hole that penetrates the partition wall in a state where the measurement substrate is housed in the 1 st chamber and attached to the partition wall, the operation button being operable from an opening on the 2 nd chamber side of the housing hole,
the disclosed device is provided with: a plate which is housed in the 2 nd chamber and covers an opening of the housing hole on the 2 nd chamber side; a screw insertion hole formed by penetrating the partition wall at a position different from the receiving hole; and a screw member that fixes the plate to the partition wall, the screw member being inserted from the 1 st chamber through the screw insertion hole and screwed into a screw stopper hole of the plate.
2. An ultrasonic flow meter according to claim 1,
a projection projecting into the 2 nd chamber is provided at a position different from the receiving hole and the screw insertion hole in the partition wall, and a projection fitting portion that fits in the projection in a state where the plate is fixed to the partition wall by the screw member is formed in the plate.
3. An ultrasonic flow meter according to claim 1,
the plate is fixed to the partition wall by a plurality of screw members corresponding to the plurality of screw insertion holes and the plurality of screw locking holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122388547.1U CN216483271U (en) | 2021-09-29 | 2021-09-29 | Ultrasonic flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122388547.1U CN216483271U (en) | 2021-09-29 | 2021-09-29 | Ultrasonic flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216483271U true CN216483271U (en) | 2022-05-10 |
Family
ID=81439034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122388547.1U Active CN216483271U (en) | 2021-09-29 | 2021-09-29 | Ultrasonic flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216483271U (en) |
-
2021
- 2021-09-29 CN CN202122388547.1U patent/CN216483271U/en active Active
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