A waterproof construction for instrument and meter
Technical Field
The utility model relates to an instrument and meter technical field especially relates to a waterproof construction for instrument and meter.
Background
Along with the increasingly high requirements of people on environmental adaptability, reliability and the like of products, the waterproof performance of the products is more and more important, and particularly, instruments and meters are often used outdoors or in humid environments, so the waterproof performance of the instruments and meters is higher. The instrument and meter that has two-layer casing now, including last casing and lower casing promptly, go up the casing and can dismantle with lower casing and be connected, go up the internal position circle that is equipped with of casing or inferior valve, in order to realize sealed waterproof, this position circle is generally through hot melt or other non-detachable mode fastens at last casing or inferior valve internally, when the position circle appears the damaged needs to be changed, then need change whole last casing or lower casing to the processing procedure process has been increased, the cost is improved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to prior art's is not enough, the utility model aims to provide an equipment is simple, has good maintainability, avoids the waterproof construction for instrument and meter of hot melt fixed design.
The purpose of the utility model is realized by adopting the following technical scheme:
a waterproof structure for instruments and meters comprises an upper shell, a positioning ring and a lower shell, wherein the upper shell and the lower shell are both of a hollow structure, the waterproof structure also comprises a sealing ring, an internal thread is arranged in the upper shell, and an external thread connected with the internal thread is arranged on the lower shell;
the positioning ring is detachably arranged in the upper shell, the side wall of the positioning ring is close to the inner wall of the upper shell, a vertical plate vertically and downwardly extends from the bottom of the positioning ring along the circumferential direction, a sealing ring mounting groove can be formed by the vertical plate and the side wall of the upper shell, the sealing ring is arranged in the sealing ring mounting groove, and two sides of the sealing ring can be abutted against two sides of the sealing ring mounting groove;
the top of sealing washer be triangle-shaped and can with the bottom contact of position circle makes when going up the casing and screwing up through the spiral with lower casing, the sealing washer can receive the extrusion of vertical direction and take place elastic deformation, extremely makes the sealing washer draws close to the both sides of sealing washer mounting groove to realize sealed waterproof.
Further, the riser is provided with a plurality of draw-in grooves along circumference, the sealing washer be provided with a plurality of with the buckle of draw-in groove one-to-one for the fixing of sealing washer.
Furthermore, a supporting plate vertically extends upwards from the top of the positioning ring along the circumferential direction and is used for reinforcing and supporting the positioning ring.
Furthermore, a plurality of first reinforcing ribs are arranged on the supporting plate and used for enhancing the strength of the positioning ring.
Further, be provided with the mount pad in the upper casing, vertical two erection columns of downwardly extending on the mount pad, just two erection column intervals set up, set up on the position collar with the mounting hole of erection column adaptation, be used for the position collar with dismantling of upper casing.
Furthermore, a plurality of second reinforcing ribs are further arranged in the upper shell and used for reinforcing and supporting the positioning ring.
Compared with the prior art, the beneficial effects of the utility model reside in that:
1. the utility model discloses a under the state of spiral malleation, because the top of sealing washer is the triangle-shaped shape, the sealing washer receives the extrusion of vertical direction and takes place elastic deformation, to making the sealing washer draw close to the lateral wall of riser and last casing, at the in-process that the last casing carries out the screw tightening with lower casing, because the sealing washer receives over-compression and causes to exert the effort to the lateral wall of riser and last casing to realized that the sealing washer decomposes by the normal pressure and is converted into the lateral wall and produce the normal force, and then realized waterproof seal.
2. The utility model discloses the equipment is simple, can realize good maintainability, avoid the fixed design of hot melt, the combination of casing and position circle need not hot melt or other can not dismantlement mode hookups on the realization, lateral wall space between make full use of riser and the last casing, do benefit to waterproof construction's miniaturization and compactification, the waterproof structure of lateral wall has been realized under the spiral malleation state, the decomposition on the mechanics has been realized, with realized the physics freely converting between malleation and the side pressure, the waterproof structure scope under the spiral hookup mode has been widened, malleation and the waterproof double track parallel mode of side pressure have been realized.
Drawings
FIG. 1 is a schematic sectional view of the present invention;
FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;
fig. 3 is a schematic view of the three-dimensional exploded structure of the present invention.
In the figure: 1. an upper housing; 10. an internal thread; 11. a mounting seat; 110. mounting a column; 12. a second reinforcing rib; 2. a lower housing; 20. an external thread; 3. positioning rings; 30. a vertical plate; 31. a support plate; 310. a first reinforcing rib; 32. mounting holes; 33. a card slot; 4. a seal ring; 40. buckling; 5. and a sealing ring mounting groove.
Detailed Description
In the following, the present invention is described with priority in conjunction with the accompanying drawings and the detailed description, and it should be noted that, in the premise of no conflict, the embodiments or technical features described below may be arbitrarily combined to form a new embodiment.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", "vertical", "top", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through both elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The implementation mode is as follows:
please refer to fig. 1-3, the utility model discloses a waterproof construction for instrument, including last casing 1, position circle 3 and lower casing 2, go up casing 1 with casing 2 is hollow structure down, should be used for waterproof construction of instrument still including sealing washer 4, and this sealing washer 4 is made by silicon rubber, upward be provided with internal thread 10 in the casing 1, casing 2 is provided with the external screw thread 20 with internal thread 10 threaded connection down, go up casing 1 with casing 2 passes through threaded connection down, realizes going up casing 1 and casing 2's dismantlement down. Preferably, the upper shell 1 is made of engineering plastics, and the lower shell 2 is made of magnesium-aluminum alloy material; of course, the cage 3 is also made of engineering plastic.
The positioning ring 3 is detachably installed in the upper shell 1, the side wall of the positioning ring 3 is close to the inner wall of the upper shell 1, a vertical plate 30 extends downwards from the bottom of the positioning ring 3 along the circumferential direction, the vertical plate 30 and the side wall of the upper shell 1 can form a sealing ring installation groove 5, the sealing ring 4 is installed in the sealing ring installation groove 5, the two sides of the sealing ring 4 can be pressed against the two sides of the sealing ring installation groove 5, and therefore understanding can be achieved, and the sealing ring 4 and the sealing ring installation groove 5 are excessively matched.
In addition, the top of sealing washer 4 is triangle-shaped and can with the bottom contact of position circle 3 makes when going up casing 1 and lower casing 2 and screwing up through the spiral, sealing washer 4 can receive vertical direction's extrusion and take place elastic deformation, extremely makes sealing washer 4 draws close to the both sides of sealing washer mounting groove 5 to realize sealed waterproof. That is, under the state of spiral malleation, because the top of sealing washer 4 is the triangle-shaped shape, can understand, the section of sealing washer 4 adopts triangle-shaped and cuboid stack joint design's structure, sealing washer 4 receives the extrusion of vertical direction and takes place elastic deformation, to making sealing washer 4 draw close to the lateral wall of riser 30 and last casing 1, at the in-process that upper casing 1 and lower casing 2 carry out the screw up, because sealing washer 4 receives the over-compression and causes to exert the effort to the lateral wall of riser 30 and last casing 1, thereby realized that sealing washer 4 decomposes by the positive pressure and converts the lateral wall into and produce the normal force, and then realized sealed waterproof.
During assembly, the positioning ring 3 is assembled in the upper shell 1 in an embedded manner, then the sealing ring 4 is assembled in a combined body of the upper shell 1 and the inner positioning ring 3, namely the sealing ring 4 is installed in a sealing ring installation groove 5 formed by the vertical plate 30 and the side wall of the upper shell 1, the upper shell 1 and the lower shell 2 are assembled together through screw tightening, when the upper shell 1 is screwed in place, front pressure (extrusion in the vertical direction) is applied to the sealing ring 4, and the sealing ring 4 is close to the vertical plate 30 and the side wall of the upper shell 1, so that sealing and water proofing are realized; the equipment is simple, can realize good maintainability, avoid hot melt fixed design, the combination that realizes going up casing 1 and position circle 3 need not hot melt or other can not the dismantlement mode hookups, make full use of the lateral wall space between riser 30 and the last casing 1, do benefit to waterproof construction's miniaturization and compactification, the waterproof structure of lateral wall under the spiral malleation state has been realized, the decomposition in the mechanics has been realized, with having realized physics free conversion between malleation and the side pressure, waterproof structure scope under the spiral hookup mode has been widened, malleation and the waterproof double track parallel mode of side pressure have been realized.
In a preferred embodiment, an installation seat 11 is disposed in the upper housing 1, two installation posts 110 vertically extend downward from the installation seat 11, the two installation posts 110 are disposed at intervals, and an installation hole 32 adapted to the installation posts 110 is formed in the positioning ring 3, so that the positioning ring 3 and the upper housing 1 can be detached from each other. It can be understood that the retainer ring 3 is assembled with the mounting post 110 of the upper housing 1 through the mounting hole 32, and it should be noted that the mounting hole 32 is in clearance fit with the mounting post 110 to facilitate later removal or replacement of the retainer ring 3. Of course, since the mounting hole 32 is in clearance fit with the mounting post 110, the positioning ring 3 will fall off under the action of its own gravity in a natural state, and the sealing ring 4 is transitionally mounted in the sealing ring mounting groove 5 formed by the upright plate 30 on the positioning ring 3 and the side wall of the upper shell 1. Therefore, under the action of the sealing ring 4, the positioning ring 3 cannot fall off due to the gravity of the positioning ring in a natural state; when the positioning ring 3 needs to be detached or replaced, only the sealing ring 4 needs to be detached, and the positioning ring 3 can fall under the gravity of the positioning ring 3, so that detachment is completed.
In a preferred embodiment, the vertical plate 30 is provided with a plurality of clamping grooves 33 along the circumferential direction, the sealing ring 4 is provided with a plurality of buckles 40 corresponding to the clamping grooves 33 one by one, the buckles 40 on the sealing ring 4 are used for fixing the sealing ring 4, and the sealing ring 4 is fixed by clamping the buckles 40 on the sealing ring 4 in the clamping grooves 33.
In a preferred embodiment, a supporting plate 31 extends vertically upwards from the top of the positioning ring 3 along the circumferential direction, so as to reinforce and support the positioning ring 3, and the supporting plate 31 reinforces the strength of the positioning ring 3; further, a plurality of first reinforcing ribs 310 are arranged on the support plate 31, and are used for enhancing the strength of the retainer ring 3, that is, the strength of the support plate 31 is achieved by arranging the first reinforcing ribs 310 on the support plate 31, and then the strength of the retainer ring 3 is enhanced. In order to enable the retainer ring 3 to be installed in the upper housing 1 more stably, preferably, a plurality of second reinforcing ribs 12 are further disposed in the upper housing 1 for reinforcing and supporting the retainer ring 3, that is, the second reinforcing ribs 12 are used for reinforcing and supporting the retainer ring 3.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.