Sun-shading rain cover

Abstract

A sun-shading rain cover belongs to the field of instrument accessories and is characterized by comprising a connecting clamp, a fixing plate and a sun-shading plate. An internal thread isolation column is arranged on the connecting clamp; a stud perpendicular to the sun shield is arranged at the circle center of the sun shield; a connecting fixing hole and a sunshade fixing hole are formed in the fixing plate; the fixing plate is fixedly connected with the internal thread isolation column on the connecting clamp through a screw penetrating through the connecting fixing hole. The internal thread isolation column is located between the fixing plate and the connecting clamp. And after the studs on the sun shield penetrate through the sun-shading fixing holes, the fixed connection between the fixing plate and the sun shield is realized through nuts. By improving an existing rain cover, arranging the sun shield at the lower part of the dial plate of the density meter and reserving the notch as the observation window, the area irradiated by sunlight can be effectively reduced, and a better sun-shading effect can be achieved when the incident angle of the sunlight is smaller, so that the temperature difference caused by the sunlight irradiation is avoided, and the operation and use precision of the density meter is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the field of instrument accessories, and particularly relates to a sunshade type rain cover. Background Art

[0002] In the high-voltage electrical power transmission and transformation industry, SF6 density controllers (hereinafter referred to as density meters) are widely used, and the low-voltage alarm and locking signals sent by them ensure the safe operation of high-voltage switchgear. The contact accuracy index of the density controller is its key index. For density meter manufacturers, strictly controlling the fine-tuning workshop at a constant temperature of 20 °C can ensure the contact accuracy of the density meter. However, in actual on-site use of the density meter, problems often occur such as the accuracy exceeding the standard after installation or false alarms even though it is qualified at the factory. This is because the density meter uses the ambient temperature as the temperature of the insulating gas in the high-voltage switch chamber. The volume of the high-voltage switch chamber is relatively large. Only when the ambient temperature is relatively stable for a long time, the indication of the density meter is true and accurate. However, such an ideal environment hardly exists in the outdoor natural climate. Sudden changes in the weather cause the temperature of the meter to change rapidly, while the temperature of the high-voltage switch chamber changes relatively slowly. This leads to abnormal indications of the meter in a short time, and when the temperature difference between the two is too large, false alarm problems will occur.

[0003] The situation where such a temperature difference appears most frequently is when the front of the meter is irradiated by sunlight in the morning and evening, which will cause the temperature of the meter to rise rapidly. Since the high-voltage switch chamber heats up slowly, the pointer of the meter will move downward. When the temperature difference is relatively large, the alarm signal will be triggered, creating a false appearance of air leakage in the chamber. In order to avoid sunlight irradiation, it is often necessary to lengthen the brim part of the existing rain cover. However, this lengthened brim rain cover is neither beautiful nor can it play a sunshade role when the sunlight incident angle is small. Therefore, it is necessary to develop a rain cover with an efficient sunshade function. Summary of the Invention

[0004] The utility model aims to solve the above problems and provides a sunshade type rain cover with an efficient sunshade function.

[0005] The sunshade type rain cover of the utility model includes a connecting clip, a fixing plate and a sunshade plate;

[0006] An internal thread isolation column is arranged on the connecting clip;

[0007] The sunshade plate is circular; a sector-shaped notch is arranged on the sunshade plate;

[0008] A stud is perpendicularly arranged at the center of the circle of the sunshade plate and perpendicular to the sunshade plate;

[0009] Connecting fixing holes and sunshade fixing holes are arranged on the fixing plate;

[0010] The fixed plate is fixedly connected to the internal-thread isolation post on the connection clip through screws passing through the connection fixing holes; the internal-thread isolation post is located between the fixed plate and the connection clip;

[0011] The stud on the sunshade passes through the aforementioned sunshade fixing hole and then the fixed plate is fixedly connected to the sunshade through a nut.

[0012] The sunshade is connected to the fixed plate through the cooperation of its central stud and nut; then it is connected to the density meter through the connection clip. By setting a notch on the sunshade as an observation window, before the sunshade is fastened to the fixed plate, the window angle can be rotated and adjusted to ensure that the pointer can be observed, and then the nut is tightened by hand. By setting the sunshade in a circle corresponding to the dial, the sunshading effect is improved.

[0013] Furthermore, for the sunshading rainproof cover of the present utility model, the fixed plate is triangular; the sunshade fixing hole is arranged at the upper end of the fixed plate;

[0014] There are two connection fixing holes, and the two connection fixing holes are horizontally arranged at the lower end of the fixed plate;

[0015] There are two aforementioned connection clips;

[0016] The fixed plate is fixedly connected to the internal-thread isolation post on the connection clip through screws passing through the connection fixing holes. The fixed plate is set as triangular, and a stable and reliable fixing structure is provided for the connection clip and the sunshade through the triangle.

[0017] Furthermore, for the sunshading rainproof cover of the present utility model, the stud is an energy storage welding stud, and the stud and the sunshade are integrated in the form of instant large-current welding, which is suitable for industrial automation production and reduces the production and processing cost.

[0018] Furthermore, for the sunshading rainproof cover of the present utility model, the nut is a knurled nut; the use of a knurled nut can achieve convenient and rapid adjustment of the fan-shaped window formed by the notch on the sunshade. The fan-shaped window formed by the notch on the sunshade is adjusted according to the working range of the meter, and then fixed by tightening the nut, and it can be operated without tools. For different use scenarios with different working ranges of meters with different parameter values, the sunshade rotates around the stud before the nut is tightened, so as to realize the 360° rotation adjustment of the fan-shaped window.

[0019] Furthermore, for the sunshading rainproof cover of the present utility model, the connection clip is a U-shaped clip; by using a U-shaped clip, it can be conveniently clamped to the bottom clip of the existing rainproof cover through its U-shaped structure, thereby improving the installation efficiency.

[0020] Furthermore, in the sunshade-type rain cover of the present utility model, a set screw is provided in the internally threaded isolation post; by providing the set screw, the stable fixation of the U-shaped clamp and the clip at the bottom of the existing rain cover is achieved, and the stability of the connection between the connection clip and the density meter is improved.

[0021] Regarding the sunshade-type rain cover of the present utility model, considering the relationship of the sun's incident angle, through the improvement of the existing rain cover, a sunshade plate is provided at the lower part of the dial of the density meter, and a notch is reserved as an observation window, which can effectively reduce the area of sunlight irradiation, and has a good sunshade effect when the sun's incident angle is small, thereby avoiding the temperature difference caused by sunlight irradiation and effectively improving the operation and use accuracy of the density meter. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is the front view of the sunshade-type rain cover of the present utility model;

[0023] Figure 2 is the side view of the sunshade-type rain cover of the present utility model;

[0024] Figure 3 is the schematic structural diagram of the connection clip of the present utility model;

[0025] Figure 4 is the schematic structural diagram of the sunshade plate of the present utility model;

[0026] Wherein 1 - rain cover, 2 - density meter, 3 - connection clip, 4 - fixing plate, 5 - sunshade plate, 6 - pointer, 7 - internally threaded isolation post, 8 - nut, 9 - stud, 10 - set screw, 11 - screw. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The sunshade-type rain cover 1 of the present utility model will be described in detail below with reference to the drawings and embodiments.

[0028] This embodiment discloses a sunshade-type rain cover 1, as Figure 1 , Figure 2 shown, including a connection clip 3, a fixing plate 4 and a sunshade plate 5; an internally threaded isolation post 7 is provided on the connection clip 3, and is fixedly connected to the connection clip 3 by laser welding in this embodiment; as Figure 4 shown, the sunshade plate 5 is circular; a sector-shaped notch is provided on the sunshade plate 5; a stud 9 is perpendicularly provided at the center of the sunshade plate 5 to the sunshade plate 5; connection fixing holes and sunshade fixing holes are provided on the fixing plate 4; the fixing plate 4 is fixedly connected to the internally threaded isolation post 7 on the connection clip 3 by a screw 11 passing through the connection fixing hole; the internally threaded isolation post 7 is located between the fixing plate 4 and the connection clip 3; the stud 9 on the sunshade plate 5 passes through the aforementioned sunshade fixing hole and is fixedly connected to the fixing plate 4 and the sunshade plate 5 by a nut 8.

[0029] In the embodiment of the present disclosure, the fixing plate 4 is triangular; the sunshade fixing holes are arranged at the upper end of the fixing plate 4; there are two connecting fixing holes, and the two connecting fixing holes are horizontally arranged at the lower end of the fixing plate 4; the aforesaid connecting clips 3 include two; the fixing plate 4 is fixedly connected to the internal thread isolation posts 7 on the connecting clips 3 through screws 11 passing through the connecting fixing holes.

[0030] In the embodiment of the present disclosure, the stud 9 is an energy storage welding stud 9; the nut 8 is a knurled nut 8; as Figure 3 shown, the connecting clip 3 is a U-shaped clip. A set screw 10 is arranged in the internal thread isolation post 7.

[0031] When installing and using, U-shaped clips are symmetrically installed at the preset positions of the lower end of the existing conventional rain cover 1 on the watch base. The internal thread isolation posts 7 of laser spot welding are arranged on the inner sides of the front ends of the U-shaped clips. During installation, the U-shaped clips are clamped outside the lower end watch base of the conventional rain cover 1, and are fastened by screwing the set screws 10 into the internal thread isolation posts 7, and then the fixing plate 4 and the U-shaped clips are fastened with two screws 11. A standard part, namely an energy storage welding stud 9, is arranged at the center of the sunshade 5. There are three through holes on the fixing plate 4. The two through holes at the lower end are connecting fixing holes for fixing, and the through hole at the upper end is a sunshade fixing hole for the energy storage welding stud 9 of the sunshade 5 to pass through. The shape and size of the sunshade 5 match the window glass of the density meter 2, and a notch for observing the position of the pointer 6 is left thereon. After rotating this notch around the energy storage welding stud 9 to adjust to the normal working range of the pointer 6 of the density meter 2, the knurled nut 8 is screwed onto the energy storage welding stud 9 by hand and tightened, and the assembly can be completed.

[0032] The sunshade type rain cover 1 of the present utility model does not change the external shape of the original rain cover 1, can be installed and used by simple addition, and the sunshade effect is much higher than that of the extended brim, effectively solving the problem that the temperature of the density meter 2 is abnormal due to the low-angle sunlight injection, retaining the window in the normal working range of the pointer 6, further reducing the area of the dial directly irradiated by sunlight, and the window can be rotated and fixed 360 degrees, which can meet the working ranges of different meters.

Claims

1. A sunshade rain cover, characterized in that: Includes connecting clips, fixing plates and sun visors; The connecting clamp is provided with an internal threaded isolation column; The sun visor is circular; a fan-shaped notch is provided on the sun visor; A stud is provided at the center of the sun visor perpendicular to the sun visor; The fixing plate is provided with a connection fixing hole and a sunshade fixing hole; The fixing plate is fixedly connected to the internal threaded isolation column on the connecting clamp by screws passing through the connecting fixing holes; the internal threaded isolation column is located between the fixing plate and the connecting clamp; The studs on the sun visor pass through the sun visor fixing holes and then are fixedly connected to the fixing plate and the sun visor through nuts.

2. The sunshade rain cover according to claim 1, characterized in that: The fixing plate is triangular in shape; the sunshade fixing hole is arranged at the upper end of the fixing plate; The connecting and fixing holes include two, and the two connecting and fixing holes are horizontally arranged at the lower end of the fixing plate; The aforementioned connecting clips include two; The fixing plate is fixedly connected to the internal threaded isolation column on the connecting clamp by screws passing through the connecting fixing holes.

3. The sunshade rain cover according to claim 2, characterized in that: The stud is an energy storage welding stud.

4. The sunshade rain cover according to claim 3, characterized in that: The nut is a knurled nut.

5. The sunshade rain cover according to claim 1, 2 or 4, characterized in that: The connecting clip is a U-shaped clip.

6. The sunshade rain cover according to claim 5, characterized in that: A set screw is arranged in the internal threaded isolation column.

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