CN220726808U - Double-effect sealing structure for assembling screw in blind hole - Google Patents

Abstract

The utility model discloses a double-effect sealing structure for assembling screws in blind holes, which comprises a lower cover, an upper cover, a plurality of blind holes, sealing elements and screws, wherein the upper cover is arranged in an overlapping matching mode with the lower cover, the blind holes penetrate through the upper cover and extend into the lower cover, the sealing elements are arranged in the blind holes and penetrate through the blind holes in a matched mode to be positioned, the sealing elements are arranged in the blind holes of the upper cover, first sealing parts for sealing and abutting against inclined surfaces of peripheral outer walls of the screws are circumferentially arranged at the upper parts of the sealing elements, second sealing parts for sealing and abutting against the surface plane of the lower cover are circumferentially arranged at the lower parts of the sealing elements, a first included angle is formed between two side edges of the first sealing parts and the inclined surfaces of the outer walls of the screws respectively, and a second included angle is formed between two side edges of the second sealing parts and the surfaces of the lower cover respectively. The utility model realizes double-effect sealing by matching the screw with the sealing element in the blind hole, and improves the sealing performance.

Description

Double-effect sealing structure for assembling screw in blind hole

Technical Field

The utility model belongs to the technical field of screw sealing, and particularly relates to a double-effect sealing structure for assembling screws in blind holes.

Background

In order to ensure the combined sealing performance of the part products, the screw is matched with the sealing ring to be installed in the screw hole to be of a conventional sealing structure, the sealing ring made of rubber is used for sealing, aging can occur after long-time use, and the sealing performance is affected.

The prior patent number CN202221991910.7 discloses a stepped screw sealing structure for a diaphragm gas meter, a screw rod is in threaded connection with a screw hole of a lower shell, and a step is positioned in the screw hole of an upper cover. After the length and the diameter of the step are calculated to be in the most proper sizes, the compression amount of the rubber sealing ring is completely determined by the step length of the step screw under the same torque and the same parts, and each point of the compression amount of the rubber sealing ring is kept consistent, so that the tightness is ensured. The sealing structure can effectively improve the sealing performance of the sealing ring, but the sealing ring is still needed to be used, and additional manufacturing procedures and assembly procedures are inevitably added. Therefore, there is a need to design a structure that can be quickly assembled with a screw connection product and can achieve sealing without using a sealing ring.

Disclosure of Invention

The utility model aims to solve the technical problems, and provides a double-effect sealing structure for assembling a screw in a blind hole, so that the screw is matched with a sealing piece in the blind hole to achieve double-effect sealing, and the sealing performance is improved. In order to achieve the above purpose, the technical scheme of the utility model is as follows:

the utility model provides a screw equipment economic benefits and social benefits seal structure in blind hole, includes the lower cover, matches the upper cover that sets up with the lower cover coincide, runs through the upper cover and extend to a plurality of blind holes in the lower cover, sets up the sealing member in the blind hole, and the cooperation sealing member penetrates the screw of locating in the blind hole, is located be provided with the sealing member in the blind hole of upper cover, the upper portion circumference of sealing member is provided with the first sealing portion of sealed support screw circumference outer wall inclined plane, the lower part circumference of sealing member is provided with the second sealing portion of sealed support lower cover surface plane, form first contained angle between the both sides limit of first sealing portion respectively and the outer wall inclined plane of screw, form the second contained angle between the both sides limit of second sealing portion respectively and the surface of lower cover.

Specifically, the top circumference of lower cover is provided with down the locating bench, the bottom circumference of upper cover is provided with the last locating bench of cooperation lower locating bench, go up locating bench and lower locating bench joint cooperation.

Specifically, the screw comprises a screw head and a screw cap connected with the screw head, wherein the outer wall of the circumferential joint of the screw cap and the screw head is an inclined plane.

Specifically, the blind hole is including setting up in the lower hole at lower cover top and running through the upper hole that the upper cover set up, lower hole and screw pin head screw-thread fit are connected, the nut holding is in the upper hole.

Specifically, the sealing element is positioned in the upper hole and close to the lower hole, and the sealing element and the upper cover are integrally connected.

Compared with the prior art, the double-effect sealing structure for assembling the screw in the blind hole has the following main beneficial effects:

by arranging the sealing element in the blind hole, the sealing element and the upper cover are of an integrated structure, so that the traditional rubber ring is prevented from needing additional processing steps, and the installation and assembly efficiency is improved; the sealing piece is provided with a first sealing part and a second sealing part, the first sealing part is in sealing contact with the screw, and the second sealing part is in sealing contact with the lower cover, so that the screw is provided with a double-effect sealing effect, and the sealing effect is improved; the inclined surfaces of the first sealing part, which are contacted with the screw, form a first included angle, the second sealing part, which is contacted with the surface of the lower cover, form a second included angle, and the first sealing part and the second sealing part have smaller contact areas, and correspondingly, larger stress effect can be realized, and the sealing performance is further improved; and secondly, the first sealing part can be suitable for contact sealing of the inclined plane of the screw, so that the problem of poor sealing caused by the fact that the bottom surface of the nut cannot be completely used as a plane due to the limitation of a screw processing technology is avoided.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present utility model;

FIG. 2 is a schematic view showing a sectional structure of a screw mounting in the present embodiment;

FIG. 3 is a schematic view of the structure of the screw in the present embodiment;

FIG. 4 is a schematic cross-sectional view of the seal member according to the present embodiment;

the figures represent the numbers:

1 lower cover, 11 upper cover, 12 lower locating table, 13 upper locating table, 2 blind hole, 21 lower hole, 22 upper hole, 3 sealing element, 31 first sealing part, 32 second sealing part, 33 first included angle, 34 second included angle, 4 screw, 41 screw nail head, 42 nail cap, 43 inclined plane.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely, but is apparent to those skilled in the art in view of the present utility model.

Examples:

referring to fig. 1-4, the embodiment is a double-effect sealing structure assembled by screws in blind holes, comprising a lower cover 1, an upper cover 11 overlapped and matched with the lower cover 1, a plurality of blind holes 2 penetrating through the upper cover 11 and extending into the lower cover 1, sealing elements 3 arranged in the blind holes 2, and screws 4 matched with the sealing elements 3 to penetrate into the blind holes 2 for positioning; the blind hole 2 of upper cover 11 is provided with sealing member 3 in, and sealing member 3's upper portion circumference is provided with the first sealing portion 31 of sealing against screw 4 circumference outer wall inclined plane, and sealing member 3's lower part circumference is provided with the second sealing portion 32 of sealing against lower cover 1 surface plane, forms first contained angle 33 between the both sides limit of first sealing portion 31 respectively and the outer wall inclined plane of screw 4, forms second contained angle 34 between the both sides limit of second sealing portion 32 respectively and the surface of lower cover 1. The surface of the lower cover 1 where the blind holes 2 are arranged is a plane.

In this embodiment, the lower cover 1 and the upper cover 11 are combined and connected to form a square structure, the top circumference of the lower cover 1 is provided with a lower positioning table 12, the bottom circumference of the upper cover 11 is provided with an upper positioning table 13 matched with the lower positioning table 12, the upper positioning table 12 is matched with the lower positioning table 13 in a clamping manner to realize pre-positioning connection, and the blind hole 2 is penetrated with a screw 4 to be locked and locked again.

The screw 4 comprises a screw head 41 and a screw cap 42 connected with the screw head 41, wherein the outer wall of the circumferential joint of the screw cap 42 and the screw head 41 is an inclined surface 43. The blind hole 2 comprises a lower hole 21 arranged at the top of the lower cover 1 and an upper hole 22 penetrating through the upper cover 11, the lower hole 21 is connected with a screw head 41 in a screw fit manner, and a screw cap 42 is accommodated in the upper hole 22.

The sealing element 3 is located in the upper hole 22 and close to the position of the lower hole 21, the sealing element 3 and the upper cover 11 are integrally connected, the sealing element 3 is located between the screw 4 and the lower cover 1, and then the inclined surface 43 at the joint of the first sealing part 31, the nut 42 and the screw head 41 is in contact sealing, the second sealing part 32 is in contact sealing with the surface of the lower cover 1, and the screw 4 is locked in the blind hole 2, so that the upper part and the lower part of the sealing element 3 are respectively sealed, and the double-layer sealing effect is achieved.

When the second sealing part 32 is pressed and sealed on the surface of the lower cover 1 under force, the side edge of the second sealing part 32, which is close to the screw 4, does not contact the surface of the lower cover 1, and the second included angle 34 on the two sides enables the contact area between the second sealing part 32 and the surface of the lower cover 1 to be smaller, so that the crimping acting force can be larger, and the good sealing performance can be achieved. Similarly, the first sealing part 31 is pressed and connected with the inclined plane 43 at the joint of the nut 42 and the screw head 41 by force, and the contact area of the first sealing part 31 is smaller, so that the inclined plane 43 at the joint of the nut 42 and the screw head 41 achieves better sealing performance.

When the embodiment is applied, the lower cover 1 and the upper cover 11 are preassembled and matched, so that the lower hole 21 and the upper hole 22 correspond to each other, and the screw 4 penetrates into the blind hole 2 to be locked and positioned in the lower cover 1 and the upper cover 11; in the process of locking the screw 4, the first sealing part 31 of the sealing element 3 contacts the sealing screw 4, and the second sealing part 32 of the sealing element 3 contacts the sealing lower cover 1, so that double-effect sealing effect is realized.

In the embodiment, the sealing element 3 is arranged in the blind hole 2, and the sealing element 3 and the upper cover 11 are of an integrated structure, so that the traditional arrangement of a rubber ring is avoided, additional processing steps are required, and the installation and assembly efficiency is improved; the sealing member 3 is provided with a first sealing part 31 and a second sealing part 32, the first sealing part 31 is in sealing contact with the screw 4, and the second sealing part 32 is in sealing contact with the lower cover 1, so that the screw 4 is provided with double-effect sealing effect, and the sealing effect is improved; the inclined surface 43 of the first sealing part 31, which contacts the screw 4, forms a first included angle 33, the second sealing part 32 contacts the surface of the lower cover 1 to form a second included angle 34, the first sealing part 31 and the second sealing part 32 have smaller contact areas, correspondingly, larger stress effect can be realized, and the sealing performance is further improved; second, the first sealing portion 31 can be suitable for contact sealing of the inclined surface 43 of the screw 4, so that the problem of poor sealing caused by that the bottom surface of the nut 42 cannot be completely used as a plane due to the limitation of the processing technology of the screw 4 is avoided.

In the description of the present specification, the term "particular embodiment" or "a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present utility model are described above, the embodiments are only used for facilitating understanding of the present utility model, and are not intended to limit the present utility model. Any person skilled in the art can make any modification and variation in form and detail without departing from the spirit and scope of the present disclosure, but the scope of the present disclosure is to be determined by the appended claims.

Claims (6)

1. The utility model provides a screw equipment economic benefits and social benefits seal structure in blind hole, includes the lower cover, matches the upper cover that sets up with the lower cover coincide, runs through the upper cover and extend to a plurality of blind holes in the lower cover, sets up the sealing member in the blind hole, and cooperates the screw that the sealing member penetrated the blind hole internal location, its characterized in that: the blind hole that is located the upper cover is provided with the sealing member, the upper portion circumference of sealing member is provided with the first sealing portion of sealed screw circumference outer wall inclined plane of leaning on, the lower part circumference of sealing member is provided with the second sealing portion of sealed lower cover surface of leaning on, form first contained angle between the outer wall inclined plane of screw respectively on the both sides limit of first sealing portion, form the second contained angle between the both sides limit of second sealing portion respectively and the surface of lower cover.

2. The blind hole in-screw assembly double-effect sealing structure according to claim 1, wherein: the top circumference of lower cover is provided with down the locating bench, the bottom circumference of upper cover is provided with the last locating bench of cooperation lower locating bench, go up locating bench and lower locating bench joint cooperation.

3. The blind hole in-screw assembly double-effect sealing structure according to claim 1, wherein: the screw comprises a screw head and a screw cap connected with the screw head, wherein the outer wall of the circumferential joint of the screw cap and the screw head is an inclined plane.

4. The blind hole in-screw assembly double-effect sealing structure according to claim 3, wherein: the blind hole comprises a lower hole arranged at the top of the lower cover and an upper hole penetrating through the upper cover, the lower hole is connected with the screw head in a threaded fit manner, and the screw cap is accommodated in the upper hole.

5. The blind hole in-screw assembly double-effect seal structure according to claim 4, wherein: the sealing element is positioned in the upper hole and close to the lower hole, and the sealing element and the upper cover are integrally connected.

6. The blind hole in-screw assembly double-effect sealing structure according to claim 1, wherein: the surface of the position of the blind hole of the lower cover is a plane.