JPH0740176Y2 - Flow meter - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flow meter, and more particularly to a flow meter in which an electronic or mechanical display unit is fixed to a meter body using a fixing ring.

[0002]

2. Description of the Related Art Conventionally, in a flow meter, a fixing ring has been used to fix a display portion for displaying a flow rate or the like to a meter body. The meter main body is formed with a recess into which the display unit can be fitted, and a female screw hole is formed around the opening of the recess. The fixing ring can sandwich the display unit inserted into the recess with the meter body. A through hole communicating with the female screw hole is formed in the fixing ring at a position corresponding to the female screw hole, and a fixing screw can be screwed into the female screw hole through the through hole. The head portion of the fixing screw cannot pass through the through hole. When attaching the display unit to the meter body using the fixing ring, first insert the end of the signal cable connected to the display unit into the fixing ring, move the fixing ring to the display unit, and then move the display unit. After the fitting ring is inserted into the recess of the meter body, the fixing ring is placed around the opening of the recess. The display part is clamped and fixed between the fixing ring and the meter body by screwing a screw into the female screw hole of the meter body through the through hole of the fixing ring while pressing the display part with the fixing ring.

[0003]

However, the above-mentioned conventional flowmeter has the following problems. The flow meter is usually installed underground. The installation location of the flow meter and the management location for managing the data such as the flow rate from the flow meter are generally separated from each other, and therefore the signal cable becomes long. Therefore, when installing the indicator in the flow meter or replacing the indicator, the signal cable must be inserted through the fixed ring and the fixed ring must be moved. There is a problem that it takes time. Therefore, the present invention has been made to solve the above problems, and an object of the present invention is to supply a flow meter which does not require much time for attaching a display unit to a meter body.

[0004]

In order to solve the above problems, the present invention has the following configuration. That is, a display unit connected to a signal cable for displaying the flow rate of the fluid and outputting the displayed data as a signal to the outside,
By forming a concave portion into which the display portion can be fitted, a meter main body having a female screw hole formed around the opening of the concave portion, and a ring-like shape, and screwing into the meter main body. In a flow meter comprising a fixing ring capable of sandwiching the display unit inserted in the recess with a meter body, the fixing ring is formed of a deformable resin material.
A part is provided with a seam part , and both ends of the seam part are formed to be superimposable, and the axis lines can be aligned with each other when the fixing ring is superposed to be screwed to the meter body. There is a through hole through which a screw for screwing can be inserted. Also, especially when attaching the fixing ring to the meter body,
The fixing ring may be provided with an engaging portion capable of engaging with an engaging body provided on the meter body with one touch.

[0005]

[Operation] The operation will be described. According to the present invention, the fixing ring is made of a deformable resin material, and is partially formed.
A seam portion is provided and both ends of the seam portion are formed to be superimposable, and at the both ends, when the fixing ring is superposed to be screwed to the meter main body, the axes can be aligned and screwed. Since each through hole through which a screw for inserting is inserted is provided , separate both ends of the joint portion.
In it through the signal cable in the vicinity of the display unit in the fixed ring.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred first embodiment of the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a view showing an outer shape of a flow meter of an embodiment, (a) is a front view,
(B) is a partially cutaway side view. First, the structure will be described. The flow meter includes a meter body 10 and a display unit 12.
And has a fixing ring 14. A recess 16 is formed in the central portion of the meter body 10, and two female screw holes 18 are provided around the opening of the recess 16. The display unit 12 is formed in a cylindrical shape and can be inserted into the recess 16 of the meter body 10. A signal cable 20 for outputting the displayed data as a signal to the outside is connected to the upper surface thereof. The fixing ring 14 is
It is made of an elastic material such as a resin that has a certain degree of hardness and is deformable, and has an outer shape of a ring shape having a joint portion 22. The fixing ring 14 is provided with two through holes 24 having an inner diameter larger than that of the female screw holes 18 at positions corresponding to the two female screw holes 18 of the meter body 10. Further, the joint portion 22 can be brought into and out of contact with itself by the elasticity of the fixing ring 14, and the engaging portions 26 which are an example of the overlapping portion are formed at both end portions of the joint portion 22, respectively. Each engaging portion 26 has one through hole. The engaging portions 26 of the seam portion 22 are engaged (also overlapping)
In doing so, the through hole 24 of each engaging portion 26 is configured as one through hole whose axis line coincides.

The display unit 12 has the meter body 1 as follows.
It is fixed at 0. After the joint portion 22 of the fixing ring 14 is elastically deformed to a width through which the signal cable 20 passes in the vicinity where the signal cable 20 is connected to the display portion 12, and then the signal cable 20 is passed through the fixing ring 14. , The engaging portions 26 at both ends of the joint portion 22 are engaged (overlapped). This allows the signal cable 20 to be inserted into the fixed ring 14. The display unit 12 is inserted into the recess 16 formed in the meter body 10. An O-ring 28 made of an elastic material is inserted into the gap between the meter body 10 and the display unit 12 so that dust, water, etc. do not enter, and a flange portion extended to the outer peripheral surface of the display unit 12 is provided. 30 two O's
The ring 28 is sandwiched from above and below. After that, the fixing ring 1
4 While pressing the upper O-ring 28 on the lower surface,
And the position of the female screw hole 18 of the meter body 10 are aligned. A screw 32 is inserted into the through hole 24, and the screw 32 is inserted into the meter body 10.
It is screwed into the female screw hole 18 of FIG. At that time, the head portion 3 of the screw 32
4 is locked on the upper surface of the fixing ring 14 and presses the fixing ring 14 downward as the screw 32 is screwed. Therefore,
Since both O-rings 28 are in pressure contact with the lower surface of the fixing ring 14 and the rim of the concave portion 16 of the meter main body 10, the flange portion 30 of the display portion 12 is sandwiched between them and fixed to the meter main body 10.

Next, a preferred second embodiment of the present invention will be described in detail with reference to the accompanying drawings. 2A and 2B are views showing the outer shape of the flow meter of the second embodiment, wherein FIG. 2A is a front view and FIG. 2B is a partially cutaway side view. First, the structure will be described. At that time, the same components as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted. One female screw hole 1 is provided around the opening of the concave portion 16 of the meter body 10.
8 and a retaining member 36 is provided around the opposite opening. A through hole 24 is formed in the seam portion 22 of the fixing ring 14.
Is installed throughout. Also, at the position opposite to the seam portion 22,
A latching portion 38 capable of latching is provided on the latching body 36 of the meter body 10. Therefore, the hook portion 38 of the fixing ring 14
When the fixing ring 14 is placed on the meter main body 10 while being locked on the hooking body 36 of the meter main body 10, the circumferential movement of the fixing ring 14 is suppressed. Further, the positions of the through hole 24 of the fixing ring 14 and the female screw hole 18 of the meter body 10 coincide with each other.

The display unit 12 has the following structure as shown in FIG.
It is fixed at 0. The signal cable 20 is inserted into the fixing ring 14 in the same manner as in the first embodiment. Display 1
2 is inserted into the recess 16 formed in the meter body 10,
The flange portion 30 is sandwiched between the two O-rings 28 from above and below. Thereafter, while the hooking portion 38 of the fixed ring 14 is hooked on the hooking body 36 of the meter body 10, the fixed ring 14 is placed on the meter body 10, and the lower surface of the fixed ring 14 presses the upper O-ring 28. The screw 32 is inserted into the through hole 24, and the screw 32 is screwed into the female screw hole 18 of the meter body 10. At this time, the head portion 34 of the screw 32 is locked on the upper surface of the fixing ring 14, and the fixing ring 14 is pressed downward as the screw 32 is screwed. Therefore, both O-rings 28 are pressed against each other by the lower surface of the fixing ring 14 and the rim of the concave portion 16 of the meter body 10, so that the flange portion 30 of the display portion 12 is sandwiched between them and fixed to the meter body 10.

Although various preferred embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and many modifications can be made without departing from the spirit of the invention. Of course.

[0011]

[Effect of the invention] With the flow meter according to the present invention, the fixing ring has a seam portion, both ends of the seam portion is polymerisable to form, on the both ends of the fixing ring to the meter body NishiTome When they are superposed as much as possible, the axis lines can be aligned, and there are through holes through which screws for screwing can be inserted, so that the signal cable from the joint to the display can be placed in the fixing ring. Can be inserted. Therefore, it is possible to save the trouble of passing the fixing ring from the tip of the signal cable, and it is possible to easily clamp the display unit by using the fixing ring on the meter body. Furthermore, by providing a through hole in the joint portion and screwing it into the meter main body with a screw, it is possible to prevent both ends of the joint portion from separating. Further, when the configuration of claim 2 is adopted, the number of fixing screws can be reduced, and the working efficiency is improved, which is remarkable.

[Brief description of drawings]

FIG. 1 is a view showing an outer shape of a flow meter according to a first embodiment of the present invention, (a) is a front view and (b) is a partially cutaway side view.

2A and 2B are views showing an outer shape of a flow meter according to a second embodiment of the present invention, wherein FIG. 2A is a front view and FIG. 2B is a partially cutaway side view.

[Explanation of symbols]

10 meter main body 12 display part 14 fixing ring 16 concave part 18 female screw hole 20 signal cable 22 joint part 24 through hole 32 screw 36 hooking body 38 hooking portion

Claims (2)

[Scope of utility model registration request] 1. A display part to which a signal cable for displaying the flow rate of fluid and outputting the displayed data to the outside as a signal is connected, and a recess into which the display part can be inserted are formed. A meter main body having a female screw hole formed around the opening of the recess; and a ring-shaped meter main body, which is inserted into the recess by being screwed into the meter main body. And a fixing ring that can be held between the fixing ring and the fixing ring, the fixing ring being formed of a deformable resin material.
In addition, a seam is provided on a part of the seam , and both ends of the seam are formed to be superimposable, and when they are superposed to screw the fixing ring to the meter body, the axes can be aligned. A flow meter, which is provided with through holes through which screws for screwing can be inserted. 2. The fixing ring is provided with an engaging portion capable of engaging with an engaging member provided on the meter body with one touch when the fixing ring is attached to the meter body. Flow meter.