JP3136042B2 - Spindle cover - Google Patents

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 In general, there is known a valve which is capable of adjusting the opening / closing state by extending and retracting a spindle by rotating an operation handle. Since the opening and closing of this valve is adjusted by the degree of emergence of the spindle, a cover is provided to protect the entire spindle by providing a cover so that the spindle is not rusted or damaged. In addition, for example, in the case of various operating instruments such as gate opening / closing devices, the operating handle is rotated to cause the spindle to protrude and retract to change the position of instruments and members of various devices and equipment, as well as the above-described valve, the cover is also provided. To protect the spindle.

Heretofore, as this kind of spindle cover, there has been known a spindle cover in which a lid made of a homogeneous 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 outside is secured by using a transparent spindle cover, and the rust of the spindle is prevented by using an acrylic resin.

[0004]

However, in the case of the above-mentioned conventional spindle cover made of acrylic resin, heat stress over time such as a change in ambient temperature, heat conduction from a fluid flowing in the valve, or direct sunlight is applied. This has the disadvantages that the entire cover becomes opaque within a short period of time, cracks are easily generated, and even a small impact is broken.

[0005] Further, the adhesive portion between the cylinder and the lid is easily degraded due to the thermal stress or insufficient weather resistance, and as a result, rainwater or the like infiltrates from the upper end of the cylinder with the lid removed, On the contrary, the cylindrical body that should prevent the rusting of the spindle has a disadvantage that it retains rainwater or the like that has entered the periphery of the spindle, thereby promoting rusting.

Further, it is conceivable to prevent the peeling due to the deterioration of the cylindrical body and the lid as described above by completely molding the cylindrical body and the lid. In this case, ventilation in the cover is required. Since the imperfection becomes incomplete, dew condensation easily occurs in the cover due to a change in the ambient temperature, and the dew condensation causes the spindle to be rusted.

The present invention has been made in view of the above circumstances, and has as its object to provide a spindle cover that can effectively cover and protect a spindle for a long period of time.

[0008]

A spindle cover according to the present invention for solving the above-mentioned problem covers and protects a spindle protruding and retracting from the center of an operating handle of a valve or various operating instruments. And a transparent tubular body ,
A central portion of the handle provided at a base end of the cylindrical body.
It consists of a connection member to be connected, the cover and detachably closely attached to the upper end of the cylindrical body, these tubular body, contact
The connecting member and the lid are made of polycarbonate resin.

Further, the spindle cover, the cylindrical body and the lid is formed by a polycarbonate resin
Things. Moreover, in which connection member is formed by a metal having corrosion resistance.

[0010] Further, the lid is provided with a ventilating communication passage communicating with the inside and the outside of the lid and opening in the direction of gravity.

[0011]

According to the first aspect of the present invention, since the entirety is formed of a polycarbonate resin, excellent strength, light transmissivity, durability, weather resistance, and the like of the polycarbonate resin can be obtained. In addition, since the tubular resistance and the lid resistance are detachably mounted on the honey, the joint state between the cylindrical body and the lid can be maintained for a long time, and the cylindrical body and the lid can be freely disassembled and removed as necessary. Can be rejoined. Further, by forming a ventilation communication passage formed in the lid so as to communicate with the inside and the outside of the lid and open in the direction of gravity, it is possible to prevent rainwater from entering, and at the same time to prevent the rainwater from entering. Dew condensation can be prevented.

According to the second and third aspects of the present invention, since the cylindrical body and the lid are formed of a polycarbonate resin, the polycarbonate resin has excellent strength, light transmittance, durability, weather resistance, and the like. Is obtained. In addition, since the cylindrical body and the lid are detachably attached to the honey, the joined state between the cylindrical body and the lid can be maintained for a long time, and the cylindrical body and the lid can be freely disassembled and disassembled as necessary. Can be rejoined. Further, by forming a ventilation communication passage formed in the lid so as to communicate with the inside and the outside of the lid and open in the direction of gravity, it is possible to prevent rainwater from entering, and at the same time to prevent the rainwater from entering. Dew condensation can be prevented. Also,
According to the second aspect of the present invention, since the connecting member is formed of a metal having corrosion resistance, even if heat is transmitted from the operating handle in a high-temperature environment, there is no unexpected deformation or the like and rusting occurs. There is no fear.

[0013]

[0014]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 schematically shows the entire structure of the spindle cover 1, and FIG. 2 shows the spindle cover 1 in use.

[0016] That is, the spindle cover 1, the cover body 4 configured to connect member 3 is provided at the base end portion of the cylindrical body 2 of transparent, consists lid 5 which, these 4,5 together The whole is made of polycarbonate resin. The spindle cover 1 is adapted to cover and protect a spindle 62 which is protruded and retracted from a central portion of the operation handle 61 as the operation handle 61 of the valve 6 rotates.

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

The connecting member 3, both end portions are constituted by a cylindrical short pipe polycarbonate resin was made with different diameters, one tubular body connecting portion 31 and the other handle connected portion 3
2 are formed. The tubular body 2 is fixed to the tubular body connection portion 31 in a press-fit state.
The cover main body 4 is configured. That is, two grooves 33 are provided on the inner surface of the cylindrical body connecting portion 31, and the cylindrical body 2 is press-fitted into the cylindrical body connecting portion 31 through the seal ring 7 in the groove 33. It is made to be able to wear. In this state, a flange 34 serving as a stopper is provided around the boundary between the tubular body connecting portion 31 and the handle connecting portion 32 so that the tubular body 2 does not penetrate to the handle connecting portion 32 side. . Further, screw holes 35 are formed at several places at appropriate intervals between the grooves 33, and the screw 8 is screwed in from the outside of the cylindrical body connecting portion 31 to thereby connect the cylindrical body. Cylindrical body 2 press-fitted to portion 31
It is made to be able to fix. On the other hand, the handle connection portion 32 is also formed with screw holes 35 at several places on the outer peripheral surface thereof at appropriate intervals. This handle connection part 32
Is externally fitted to a sleeve 65 of a sleeve nut 64 for fixing the operation handle 61 of the valve 6, as shown in FIG. Then, in a state where the screw hole 66 of the sleeve 65 and the screw hole 35 of the handle connection portion 32 are aligned with each other, the screw 8 is screwed from the outside of the handle connection portion 32 to be fixed.

Incidentally, the connection to the valve 6 is not limited to the screw fixing of the sleeve nut 64 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 in 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, the connecting member 3, since the polycarbonate resin inherent excellent strength is obtained, as shown in FIG. 5, engraved screw the handle connecting part 32 itself on the inner peripheral surface with a nut shape Alternatively, the operation handle 61 may be directly fixed by the handle connection portion 32.

Furthermore, the connecting member 3, which only may be one which is formed by a metal having excellent corrosion resistance, even if made of metal, taking the aspect of the same in the case of polycarbonate resin mentioned above Can be. Examples of the metal having excellent corrosion resistance include SUS, aluminum, cast steel and the like.

The cover 5 is formed by inserting a cylindrical plug 5 from the cover plate 51.
The fitting 2 is formed integrally with a polycarbonate resin in a protruding state, and two grooves 53 are provided on the outer peripheral surface of the fitting plug 52. The fitting plug 52 is press-fitted to the upper end of the cylindrical 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 above-described one, and is not shown in the drawings. For example, screws that are screwed into the lid 5 and the upper end of the tubular member 2 are engaged with each other. And the cover 5 may be screwed to the upper end of the tubular member 2.

According to the spindle cover 1 constructed as described above, since all the members constituting the spindle cover 1 are made of polycarbonate resin, the polycarbonate resin has excellent strength, light transmittance, durability and weather resistance. The spindle 62 from the outside
, The rust of the spindle 62 is prevented 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 moved in and out), and the opening / closing state of the valve 6 can be easily adjusted. The connection between the members is performed by press-fitting or by using screw fixing together with this press-fitting, and since there is no adhesive portion provided with an adhesive or a sealant, an adhesive or a sealant is used. As a result, it is possible to prevent the connection portion between the members from being separated due to deterioration. That is, the connection state of each member can be maintained for a long period of time in combination with the characteristics of the polycarbonate resin described above, so that the spindle cover 1 has excellent durability. Further, even if a failure occurs in the connection state, it can be repaired by partial repair such as replacement of the seal ring 7 or replacement of some members, so that it is economical.

This spindle cover 1 can be used as the spindle cover 1 for various valves 6 indoors and outdoors. However, when the valve 6 is provided in a place where the temperature change is particularly severe, or in a place that is easily affected by temperature such as a high temperature fluid or a low temperature fluid, the lid 5 of the spindle cover 1 As shown in FIG. 6, the lid 5 has a configuration in which a ventilation communication path 55 is provided to communicate with the inside and outside of the lid 5 via a duct 54 protruding from the outer peripheral surface of the lid plate 51. Is preferred. 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, and the occurrence of dew inside the spindle cover 1 due to the temperature change is prevented, and the spindle by the dew condensation is prevented. 62
Can be prevented from rusting. However, when this lid 5 is used, the opening 56 of the duct 54 projecting from the outer peripheral surface of the lid plate 51 must be directed to 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, moisture such as rain easily enters the spindle cover 1 and This is because the measures to prevent rusting become meaningless. In FIG. 6, the groove 53 and the seal ring 7 are not shown.

Further, when the temperature transmitted to the connecting member 3 of the spindle cover 1 via the operating handle 61 also reaches a high temperature too, if the connection member (3) of the cover body 4 is made of the foregoing metals, temperature Can be avoided, and even in that case, the metal has corrosion resistance, so that it is excellent in weather resistance and the like, like the polycarbonate resin in other parts. In addition, mechanical strength, translucency, durability,
Polycarbonate resin with excellent weatherability
In order to avoid this, a heat-resistant and corrosion-resistant metal
The fact that the connection member 3 may be changed to
Indicates that translucency is not required. But
Conversely, if it is not necessary to avoid the effects of temperature,
Satisfies properties other than translucency of polycarbonate resin
Connection members by various engineering plastics
It is self-evident to those skilled in the art that
It can be said that.

Although FIG. 2 shows an example in which the spindle cover 1 of the present invention is attached to a valve, the present invention is not limited to this, and it goes without saying that the spindle cover 1 can also be attached to spindles in various other operating instruments.

[0028]

As described above, according to the present invention, excellent strength, light transmission, durability, weather resistance, etc. can be exhibited by the polycarbonate resin, so that the visibility of the spindle from the outside can be ensured. In addition, prevention of rusting of the spindle due to rain and wind, prevention of damage to the spindle due to external impact, and the like can be maintained at a high level for a long period of time.

Further, since the cylindrical body and the lid are press-fitted to each other, they can be prevented from being deteriorated and peeled off as in the case of using an adhesive or a sealant. The state can be maintained for a long time. Further, even when the tubular body becomes defective, only that portion can be freely disassembled and replaced. In addition, the ventilation passage formed on the lid prevents rainwater from entering, and at the same time prevents condensation inside the spindle cover, so that it can be effectively used outdoors where the temperature changes drastically. it can.

Furthermore, according to the spindle cover according to claim 2, since the connecting member is formed by a metal having excellent corrosion resistance, temperature transferred to the connecting <br/> member of the spindle cover via the operating handle Even if the temperature becomes too high, the effect of temperature can be avoided, and the metal has corrosion resistance, so it has excellent weather resistance etc., like the polycarbonate resin in other parts ing.

[0031]

[Brief description of the drawings]

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

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

FIG. 3 is an exploded perspective view showing an attached 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 attachment state of the spindle cover.

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

[Explanation of symbols]

1 spindle cover second tubular member 3 connecting member 32 for the handle connection 5 the lid 55 ventilation communication passage 56 opening 6 the valve 61 operating handle 62 the spindle 7 the sealing ring

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F16K 41/00 F16K 31/60

Claims (3)

(57) [Claims] The present invention is to cover and protect a spindle projecting and retracting from the center of an operating handle of a valve or various operating instruments, and a transparent cylindrical body and a base end of the cylindrical body. A connecting member connected to a central portion of the handle, and a lid detachably attached to the upper end of the cylindrical body so as to be detachably attached. The cylindrical body, the connecting member and the lid are made of polycarbonate. A spindle cover, which is formed of a resin and has a ventilation passage formed in the lid and communicating with the inside and the outside of the lid and opening in the direction of gravity. 2. A cover for protecting a spindle protruding and retracting from the center of an operation handle of a valve or various operation tools, comprising: a transparent tubular body; and a base end portion of the tubular body. A connecting member connected to a center portion of the handle, and a lid detachably mounted on the upper end of the cylindrical body, the cylindrical body and the lid being formed of polycarbonate resin. The connecting member is formed of a metal having corrosion resistance, and the lid is provided with a ventilation communication passage communicating with the inside and the outside of the lid and opening in the direction of gravity. A spindle cover. 3. A cover for protecting a spindle protruding and retracting from the center of an operation handle of a valve or various operation tools, and comprising: a transparent tubular body; and a base end portion of the tubular body. A connecting member connected to a center portion of the handle, and a lid detachably mounted on the upper end of the cylindrical body, the cylindrical body and the lid being formed of polycarbonate resin. A spindle cover, wherein a ventilation communication passage is formed in the lid and communicates with the inside and the outside of the lid and opens in the direction of gravity.