JPH07243554A - Spindle cover - Google Patents

Abstract

PURPOSE:To cover and protect a spindle of an handle of any operating apparatus or a valve for a long period of time. CONSTITUTION:A spindle cover 1 is formed from a cover body 4 and a lid 5 and covers and protects a spindle 62 instal-led protrusively at the center of an operating handle 61 in such a way as capable of emerging and retracting, wherein the cover body 4 is furnished with a connection part 32 with the central part of the handle 61 at the base of a cylindrical member 2 made transparently while the lid 5 is mounting on the top of the cover body 4 in tight attachment with possibility of being removed. The cover body 4 and lid 5 are made of polycarbonate resin.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spindle cover for covering and protecting a spindle protruding from an operating handle of a valve or various operating instruments.

[0002]

2. Description of the Related Art Generally, a valve is known in which the degree of opening and closing can be adjusted by retracting a spindle by rotating an operating handle. Since the opening / closing condition of this valve is adjusted depending on the appearance of the spindle, a cover is provided to cover and protect the entire spindle so as to prevent the spindle from rusting or being damaged. Also, similar to the above valves, various operating devices such as gate opening / closing devices, which rotate the operating handle to retract the spindle to change the positions of various devices and equipment, members, etc. The spindle is protected by coating.

Conventionally, as this kind of spindle cover, there is known one in which a lid body made of the same material is adhered and fixed to an upper end portion of a cylindrical body formed of a transparent acrylic resin. That is, the visibility of the spindle from the outside is ensured by using the transparent spindle cover, and the rust of the spindle is prevented by using the acrylic resin.

[0004]

However, in the case of the above-mentioned conventional acrylic resin spindle cover, a change in atmospheric temperature, heat conduction from the fluid flowing in the valve, or thermal stress with time such as direct sunlight is applied. Then, there are inconveniences that the entire cover becomes opaque in a short period of time, cracks are easily generated, and further, the cover is damaged even by a small impact.

Further, the bonded portion between the cylindrical body and the lid body is easily deteriorated and peeled off due to the heat stress and lack of weather resistance. As a result, rainwater or the like enters from the upper end portion of the tubular body with the lid body removed, On the contrary, there is a disadvantage that the cylinder, which should prevent rusting of the spindle, conversely holds rainwater that has infiltrated around the spindle and promotes rusting.

Further, it is possible to prevent the peeling due to the deterioration of the cylinder body and the lid body as described above by completely molding the cylinder body and the lid body. In that case, ventilation in the cover is performed. Since it is incomplete, dew condensation is likely to occur in the cover due to the change in the ambient temperature, and this dew condensation causes the spindle to be rusted.

The present invention has been made in view of such circumstances, and an object thereof is to provide a spindle cover capable of effectively covering and protecting the spindle for a long period of time.

[0008]

A spindle cover of the present invention for solving the above-mentioned problems covers and protects a spindle projecting from a central portion of an operation handle of a valve or various operating instruments so as to be retractable. A cover main body in which a connection portion with the central portion of the handle is formed at the base end portion of a transparent tubular body, and a lid body that is detachably and tightly attached to the upper end portion of the cover main body. The cover body and the lid are made of polycarbonate resin.

The spindle cover is for covering and protecting a spindle projectingly retractable from the central portion of the operation handle of a valve or various operating instruments, and has a transparent tubular body with the base end portion having the above-mentioned structure. The cover main body is formed with a connecting portion with the central portion of the handle, and the lid body is removably and densely attached to the upper end portion of the cover main body. The tubular body and the lid body of the cover body are made of polycarbonate. The connecting portion of the cover body is made of resin and is made of metal having corrosion resistance.

Further, a ventilation communication passage is formed in the lid so as to communicate with the inside and the outside of the lid and open in the direction of gravity.

[0011]

According to the invention of claim 1, since the whole is formed of the polycarbonate resin, the excellent strength, translucency, durability and weather resistance of the polycarbonate resin can be obtained. Further, since the cover body and the lid body are detachably and densely attached, the joint state between the cover body and the lid body can be maintained for a long time, and the cover body and the lid body can be freely disassembled and rejoined as necessary. it can.

According to the second aspect of the present invention, since the cylindrical body of the cover body and the lid body are made of polycarbonate resin, the polycarbonate resin has excellent strength, translucency, durability and weather resistance. And so on. Further, since the cover body and the lid body are detachably and densely attached, the joint state between the cover body and the lid body can be maintained for a long time, and the cover body and the lid body can be freely disassembled and rejoined as necessary. it can. Further, since the connecting portion of the cover body is formed of a metal having corrosion resistance, even if heat is transferred from the operating handle in a high temperature environment, unexpected deformation or the like does not occur and rust does not occur.

Further, by forming a ventilation communication passage in the lid body so as to communicate with the inside and the outside of the lid body and open in the direction of gravity, rainwater can be prevented from entering and at the same time the cover body can be prevented. It is possible to prevent dew condensation inside.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows an outline of the entire structure of the spindle cover 1, and FIG. 2 shows a usage state of the spindle cover 1.

That is, the spindle cover 1 is composed of a cover body 4 which is constructed by providing a connecting portion 3 at the base end of a transparent cylindrical body 2 and a lid body 5, and these 4 and 5 are the whole. Is formed of a polycarbonate resin.
This spindle cover 1 has an operating handle 6 for the valve 6.
With the rotation of 1, the spindle 62, which is projected and retracted from the central portion of the operation handle 61, is covered and protected.

The tubular body 2 is made of a transparent polycarbonate resin tube in which the spindle 62 for covering and protecting the inside is sufficiently visible, and a commercially available one can be used. . In addition, a scale for grasping the protruding / retracting state of the spindle 62, the opening / closing direction of the valve 6 by the rotation of the operation handle 61, and the like may be displayed on the tubular body 2. In particular, the display of the opening / closing direction of the valve 6 is effective when it is difficult to confirm the display of the opening / closing direction of the operation panel 63 provided on the operation handle 61 from above.

The connecting portion 3 is composed of a cylindrical short tube of polycarbonate resin whose both ends have different diameters.
One is formed as a tubular body connecting portion 31, and the other is formed as a handle connecting portion 32. Of these, the tubular body connecting portion 3
1, the tubular body 2 is fixed in a press-fitted state to form a cover body 4. That is, two groove portions 33 are provided around the inner surface of the tubular body connecting portion 31, and the tubular body 2 is press-fitted into the tubular body connecting portion 31 via the seal ring 7 in the groove portion 33. It is designed to be worn. Further, in order to prevent the tubular body 2 from penetrating to the handle connecting portion 32 side in this state, a flange portion 34 serving as a stopper is provided at a boundary portion between the tubular body connecting portion 31 and the handle connecting portion 32.
Are installed around. Further, between the groove portions 33, screw holes 35 are formed at several places at appropriate intervals, and by screwing the screw 8 from the outside of the tubular body connecting portion 31, the tubular body connecting portion 31 is connected. The tubular body 2 press-fitted into the portion 31 can be fixed. On the other hand, the handle connecting portion 3
2 also has screw holes 35 formed in several places on the outer peripheral surface thereof at appropriate intervals. As shown in FIG. 3, the handle connecting portion 32 is fitted onto the sleeve 65 of the sleeve nut 64 that fixes the operation handle 61 of the valve 6. Then, with the screw hole 66 of the sleeve 65 and the screw hole 35 of the handle connecting portion 32 aligned, the screw 8 is screwed from the outside of the handle connecting portion 32 to be fixed.

The connection to the valve 6 is not limited to the one in which the sleeve nut 64 is screwed to the sleeve 65 as in the present embodiment. For example, as shown in FIG. When fixed by a normal wheel nut 67, the inside of the handle connecting portion 32 may be formed into a hexagonal prism shape that matches the outer shape of the wheel nut 67, and may be directly fitted to the wheel nut 67.

Further, since the connecting portion 3 has the original excellent strength of polycarbonate resin, as shown in FIG. 5, the handle connecting portion 32 itself has a nut shape and a screw is formed on the inner peripheral surface thereof. The operation handle 61 may be directly fixed by the handle connecting portion 32.

Further, the connecting portion 3 may be formed of a metal having excellent corrosion resistance alone, and when the connecting portion 3 is made of a metal, the same mode as that of the above-mentioned polycarbonate resin can be adopted. it can. Examples of the metal having excellent corrosion resistance include SUS, aluminum, cast steel and the like.

The lid 5 includes a lid 51 and a cylindrical fitting plug 5
2 is formed integrally with a polycarbonate resin in a protruding state, and two groove portions 53 are provided around the outer peripheral surface of the fitting plug 52. The fitting plug 52 is press-fitted to the upper end of the tubular member 2 with the seal ring 7 interposed in the groove 53.

The attachment of the lid 5 to the tubular member 2 is not limited to the one described above, and although not shown, for example, a screw that is screwed into the lid 5 and the upper end of the tubular member 2 is mutually screwed. Alternatively, the lid 5 may be screwed to the upper end of the tubular member 2.

According to the spindle cover 1 constructed in this manner, all the members constituting the spindle cover 1 are made of polycarbonate resin, so that the polycarbonate resin has excellent strength, translucency, durability and weather resistance. Etc. are exhibited, and the spindle 62 from the outside
Is ensured, the spindle 62 is prevented from being rusted by rain and wind, and the spindle 62 is damaged by an external impact. As a result, the operation handle 61 can always be smoothly rotated (the spindle 62 can be retracted and retracted), and the opening / closing condition of the valve 6 can be easily adjusted. In addition, each member is connected by press-fitting fitting or by using screw fixing together with this press-fitting fitting.Because there is no adhesive part such as adhesive or sealant, adhesive or sealant is used. It is possible to prevent the connecting portion between the members from peeling due to deterioration as in the case of the above. That is, in combination with the characteristics of the polycarbonate resin described above, the connection state between the respective members can be maintained for a long period of time, so that the spindle cover 1 has excellent durability. Further, even if the connection state is defective, it can be repaired by partial repair such as replacement of the seal ring 7 or replacement of some members, which is economical.

The spindle cover 1 can be used as the spindle cover 1 for various valves 6 regardless of whether it is indoors or outdoors. However, in the case where the valve 6 is provided in a place where the temperature changes drastically, or in a place where the temperature of a high temperature fluid or a low temperature fluid is easily influenced, the lid 5 of the spindle cover 1 is As shown in FIG. 6, the lid body 5 is provided with a ventilation communication passage 55 that communicates with the inside and outside of the lid body 5 via a duct 54 protruding from the outer peripheral surface of the lid plate 51. It is preferable. That is, in the case of the lid 5, the ventilation of the air between the inside and the outside of the spindle cover 1 is promoted through the ventilation communication passage 55 to prevent the occurrence of dew condensation in the spindle cover 1 due to the temperature change, thereby preventing the spindle from dew condensation. 62
Can be prevented from rusting. However, when using the lid 5, the opening 56 of the duct 54 projecting from the outer peripheral surface of the lid plate 51 must be oriented in the direction of gravity. That is, even if the rusting of the spindle 62 due to dew condensation is prevented, if the opening 56 of the duct 54 is opened in a direction other than the direction of gravity, water due to rain or the like will easily enter the spindle cover 1 and the corners will be bent. This is because the measures to prevent rusting would be meaningless. The groove 53 and the seal ring 7 are not shown in FIG.

Further, when the temperature transmitted to the connecting portion of the spindle cover via the operation handle becomes too high, the connecting portion of the cover body may be made of the above-mentioned metal so that the influence of the temperature can be avoided. Even if it is possible, and even in that case, the metal has corrosion resistance, and therefore, like the polycarbonate resin in other portions, it has excellent weather resistance and the like.

Although FIG. 2 shows an example in which the spindle cover of the present invention is attached to the valve, it is needless to say that the present invention is not limited to this and is also attached to the spindles of various other operating instruments.

[0028]

As described above, according to the present invention, the polycarbonate resin can exhibit excellent strength, translucency, durability, weather resistance and the like, so that the visibility of the spindle from the outside can be secured. In addition, it is possible to maintain a high level for a long period of time, such as prevention of rusting of the spindle due to rain wind and damage of the spindle due to external impact.

Further, since the cover body and the lid body are press-fitted to each other, it is possible to prevent them from deteriorating and peeling off as in the case of using an adhesive or a sealant, and connecting them. Can be maintained for a long time. Further, even if the cover body or the cover body becomes defective, only that portion can be freely disassembled and replaced.

Further, according to the spindle cover of the second aspect, since the connecting portion of the cover body is formed of metal having excellent corrosion resistance, the temperature transmitted to the connecting portion of the spindle cover via the operating handle is too high. Even when the temperature is high, the influence of temperature can be avoided, and the metal has corrosion resistance, so that it has excellent weather resistance and the like like the polycarbonate resin in other parts.

Further, according to the spindle cover of the third aspect, it is possible to prevent rainwater from entering and at the same time to prevent dew condensation in the cover body, so that it can be effectively used even in the outdoors where the temperature changes drastically. You can

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing the outline of the overall configuration of a spindle cover.

FIG. 2 is a perspective view showing a usage state of a spindle cover.

FIG. 3 is an exploded perspective view showing a mounted state of a spindle cover.

FIG. 4 is an exploded perspective view showing another attachment state of the spindle cover.

FIG. 5 is an exploded perspective view showing still another mounting state of the spindle cover.

FIG. 6 is a perspective view showing another embodiment of the lid body.

[Explanation of symbols]

 1 Spindle cover 2 Cylindrical body 3 Connection part 32 Handle connection part 4 Cover body 5 Lid body 55 Ventilation communication path 56 Opening part 6 Valve 61 Operation handle 62 Spindle 7 Seal ring

Claims (3)

[Claims] 1. A cover for protecting a spindle projecting and retracting from a central portion of an operation handle of a valve or various operating devices, wherein a transparent tubular body has a base portion and a central portion of the handle. And a lid body that is removably and densely attached to the upper end portion of the cover body. The cover body and the lid body are formed of a polycarbonate resin. And spindle cover. 2. A spindle for projecting and retracting from a central portion of a valve or an operating handle of various operating instruments is covered and protected, and a central portion of the handle is provided at a base end portion of a transparent tubular body. And a lid body that is detachably and densely attached to the upper end portion of the cover body. The tubular body and the lid body of the cover body are formed of polycarbonate resin, A spindle cover, wherein the connecting portion of the cover body is formed of a metal having corrosion resistance. 3. The spindle according to claim 1, wherein the lid has a ventilation communication passage that communicates with the inside and the outside of the lid and opens in the gravity direction. cover.