CN213452214U - Steel ring - Google Patents

Abstract

The utility model discloses a steel ring, including the locking part. The locking component is arranged on the inner surface of the ring body in a protruding mode. The locking member includes locking teeth, which are in a thin plate shape and include a fixing portion and a contact portion. The distance between the fixed parts is smaller than that between the contact parts. The distance between the fixed parts is greater than that between the contact parts. The utility model discloses can produce bigger locking power, guarantee that the connection of card pressure formula connecting tube is inseparable, be difficult for deviating from, and be of value to processing, reduce the loss to the mould.

Description

Steel ring

Technical Field

The utility model relates to a pipe connection field especially relates to a steel ring for connecting joint pressure formula pipe fitting.

Background

In the fields of fire fighting, gas supply, heating and the like, the connection of pipes is a conventional requirement. Compared with the traditional connection modes such as welding, wire twisting and the like, the clamping and pressing type connection mode has become a common connection mode in the field due to various advantages.

The clamping and pressing type connection mode is that a thicker pipe (called a pipe fitting in the application) is sleeved on a thinner pipe (called a pipe fitting in the application), and a fixed fixing piece and a sealing piece are arranged. Then the pipe is compressed and deformed by external force, so that the pipe fitting and the pipe are fixedly connected and are sealed without water leakage.

Compared with the traditional connecting technology, the clamping and pressing type connecting pipeline has a plurality of advantages. Firstly, the construction difficulty is greatly reduced. The welding connection needs professional welders, the requirement on field equipment is high, and the construction efficiency is low. And the card is pressed and is coldly pressed by special equipment, and the workman of operation cold pressing equipment can post through extreme training, compares in the welding, and the construction degree of difficulty reduces, efficiency can promote. Secondly, the protection of the inner wall of the welding workshop by filling argon can not be achieved on the common construction site. When welding, the chromium-poor phenomenon of the materials at the welding point position is easily caused at the high temperature close to 1000 ℃. When the pipeline is used for a long time, the chlorine in the water has a corrosive effect on materials at a welding position, so that the problem of water leakage of the pipeline is caused. In addition, the welding process is not easy to form better welding quality due to the problem of operation difficulty at the position where the pipeline turns. And the clamping connection can avoid adverse effects caused by welding technology, process conditions, field equipment and the like, ensure the connection quality and improve the working efficiency.

In the snap-fit connection, the steel ring is one of the most critical components. The effect of steel ring is after the pipe fitting is compressed, locks the tubular product, prevents that it from deviating from the pipe fitting. The steel ring is generally annular, meanwhile, the locking part is arranged on the steel ring, after the pipe fitting is compressed, the diameter of the steel ring is reduced along with the inner diameter of the pipe fitting, so that the steel ring can hold the pipe fitting tightly, and the locking part arranged on the inner surface of the steel ring can prevent the pipe fitting from being separated from the pipe fitting.

The fastening elements commonly used in the prior art do not produce a sufficiently large locking force, so that the fastening effect is less than ideal. Meanwhile, the structure of some steel rings is asymmetric, so that the die is easily damaged due to the unilateral stress of the stamping die during manufacturing and processing, and the processing is difficult and the cost is increased.

Therefore, those skilled in the art have endeavored to develop a steel ring that can generate a greater locking force while protecting the mold so that the mold has a longer service life.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned defects in the prior art, the technical problem to be solved in the present invention is how to design the locking mechanism, so that the steel ring generates a larger locking force, and how to protect the mold for processing.

To achieve the above object, one skilled in the art provides a steel ring comprising a ring body and a locking mechanism, wherein the ring body has an inner surface and an outer surface, and the locking mechanism comprises a locking member disposed on the inner surface of the ring body.

Further, the locking part is disposed protruding from the inner surface.

Further, the locking member includes a locking tooth including a fixing portion fixedly provided with the inner surface and a contact portion provided to protrude from the inner surface and inclined in a direction of the second axis.

Furthermore, the contact part is in a sheet shape, the inclination angle of the contact part is smaller than 90 degrees, and the inclination angle is an included angle between the plane where the contact part is located and the inner surface.

Further, the locking member includes a first locking tooth group including two or more locking teeth different in inclination direction, and in the first locking tooth group, a distance between each of the locking teeth and the fixing portion of the other locking tooth is smaller than a distance between the contact portions.

Further, the inclination angle of each of the locking teeth in the first locking tooth group is the same.

Further, the number of the locking teeth in the first locking tooth group is even and is arranged axisymmetrically with respect to the first axis.

Further, in the first locking tooth group, at least one of the locking teeth has the fixed portion close to the locking direction and the contact portion close to the disengaging direction.

Further, two or more sets of the first locking teeth are included.

Further, the two or more first locking tooth sets are arranged in a central symmetry manner relative to the second axis.

Further, the locking member includes a second locking tooth group including two or more locking teeth different in inclination direction, and a distance between each of the locking teeth and the fixing portion of the other locking tooth in the second locking tooth group is larger than a distance between the contact portions.

Further, the inclination angle of each of the locking teeth in the second locking tooth group is the same.

Further, the number of the locking teeth in the second locking tooth group is even and is arranged axisymmetrically with respect to the first axis.

Further, in the first locking tooth group and the second locking tooth group, the fixed portion of at least one of the locking teeth is close to a locking direction and the contact portion is close to a disengaging direction.

Further, two or more sets of the second locking teeth are included.

Further, the two or more second locking tooth sets are arranged in a central symmetry manner relative to the second axis.

Further, the locking tooth axial distance in the first locking tooth group is greater than the axial distance of the locking tooth in the second locking tooth group, which is the distance of the contact portion of the locking tooth to the first axis.

Further, the steel ring is made by one-time stamping.

Further, the steel ring comprises a first state and a second state, and in the first state, the steel ring is in an unclosed annular shape.

Further, in the second state, the steel ring is in a closed ring shape.

Further, the first axis is arranged to be circumferentially disposed on the ring body and divides the ring body into two portions of equal size.

Further, the second axis is perpendicular to the plane of the ring body and passes through the center of the circle of the ring body.

Further, the first state is a state when the ring body is not compressed.

Further, the second state is a state in which the ring body is compressed.

Compared with the prior art, the utility model discloses possess following technological effect at least:

1. the utility model discloses there is some locking tooth orientation to break away from the direction setting, when the pipe fitting produced the trend that breaks away from, can produce bigger locking force.

2. The utility model discloses a locking tooth is symmetrical arrangement, consequently at stamping forming's in-process, the both sides atress of mould is even for mould life extension increases the processing uniformity, reduction in production cost.

The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings, so as to fully understand the objects, the features and the effects of the present invention.

Drawings

Fig. 1 is a schematic illustration of a first axis and a second axis of the present invention;

fig. 2 is a schematic diagram of the overall structure of one embodiment of the present invention;

fig. 3 is a top view of an embodiment of the present invention;

fig. 4 is a schematic view of a locking member position distribution according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a locking member according to an embodiment of the present invention

Fig. 6 is a schematic view of a first state after installation of an embodiment of the invention;

fig. 7 is a schematic diagram of a second state after installation of an embodiment of the present invention.

Detailed Description

The technical contents of the preferred embodiments of the present invention will be more clearly understood and appreciated by referring to the drawings attached to the specification. The present invention may be embodied in many different forms of embodiments, and the scope of the invention is not limited to the embodiments described herein.

In the drawings, elements having the same structure are denoted by the same reference numerals, and elements having similar structure or function are denoted by the same reference numerals throughout. The size and thickness of each component shown in the drawings are arbitrarily illustrated, and the present invention is not limited to the size and thickness of each component. The thickness of the components may be exaggerated where appropriate in the figures to improve clarity.

As shown in fig. 1, the ring body of the steel ring mentioned in the present application is a ring-shaped object. The utility model has a certain width, and if the utility model is unfolded, the utility model is a rectangular sheet object. In the present application, the first axis a is referred to specifically as a center line on the ring body. If will the utility model discloses expand, then first axis an is the straight line that sets up along rectangle length direction, and first axis a is cut apart this rectangle into two parts that shape and area are the same. The second axis b is a straight line perpendicular to the plane of the ring body. The ring body is used as an annular object, and the second axis b passes through the center of a circle where the ring body is located. As shown in fig. 6, the pipe 1 is sleeved on the outer surface of the pipe 2, wherein the pipe 2 points to the pipe 1 direction, which is called locking direction; the direction from the pipe 1 towards the pipe 2 is called the release direction.

Fig. 2-3 show an embodiment of the present invention, which includes a ring body 11. When the present embodiment is not mounted inside the pipe, the ring body 11 is in an unclosed annular shape, i.e., a first state. The ring body 11 is therefore provided with a notch 113. After this embodiment is installed inside the pipe and compressed, the ring body 11 is also compressed, the diameter of the ring is reduced, the two ends of the ring body 11 are pressed together, and the gap 113 disappears. The present embodiment is now in the form of a closed circular ring, i.e. the second state.

The ring body 11 is provided with locking teeth on its inner surface as locking members of the present embodiment. Fig. 5 is a schematic structural diagram of the locking tooth in the present embodiment. The locking tooth comprises a fixing part fixedly connected with the inner surface of the ring body 11 and a contact part protruding out of the inner surface of the ring body 11. When the contact part is used, the contact part is in contact with a pipe sleeved in the pipe fitting, and can be embedded into the outer surface of the pipe when the pipe has a separation trend, so that the pipe is locked. Specifically, the whole locking tooth is in a thin sheet shape, a plane where the locking tooth is located and the inner surface of the ring body 11 form a certain included angle, the included angle is smaller than 90 degrees, and the included angles of the plurality of locking teeth included in the embodiment are the same. In other embodiments, the arrangement mode with different included angles can be adopted according to specific needs. As shown in fig. 5, in the present embodiment, a pair of locking teeth, in which two fixing portions are disposed close to each other and contact portions are disposed apart (i.e., disposed opposite to each other), constitute a first locking tooth group 111. The two fixed portions are separately disposed and the contact portions are adjacent to (i.e., oppositely disposed) the locking teeth to constitute a second locking tooth group 112. Two locking teeth included in the first locking tooth group 111 and the second locking tooth group 112 are both provided axisymmetrically with respect to the first axis a. Although in the present embodiment, the fixing portions of the two locking teeth included in the first locking tooth group 111 are disposed adjacently, in other embodiments, the fixing portions of the two locking teeth may be disposed separately, and only the distance between the fixing portions needs to be kept smaller than the distance between the contact portions (i.e., disposed oppositely), and the fixing portions are axisymmetric with respect to the first axis a, so as to achieve similar technical effects.

In either the first locking tooth group 111 or the second locking tooth group 112, at least one locking tooth is disposed toward the locking direction, i.e., its fixed portion is directed in the disengagement direction and its contact portion is directed in the locking direction. In the present embodiment, the first locked tooth group 111 and the second locked tooth group 112 both include two locking teeth, and in other embodiments, more than two locking teeth may be provided in the locking tooth group according to actual needs, as long as at least one of the locking teeth is ensured to be provided toward the locking direction.

As shown in fig. 4, in an embodiment of the present invention, a schematic diagram of the positions of the first locking tooth group 111 and the second locking tooth group 112 is provided, and a three-dimensional schematic diagram thereof is shown in fig. 2. The first and second locking tooth groups 111 and 112 are arranged symmetrically with respect to the second axis b. In the present embodiment, it is preferable to adopt 6 sets of the first locking tooth groups 111 and 5 sets of the second locking tooth groups 112, and the first locking tooth groups 111 and the second locking tooth groups 112 are arranged at intervals on the premise of being arranged as a center symmetry with respect to the second axis b. However, the number of the first locking tooth set 111 and the second locking tooth set 112 is not fixed, and can be adjusted according to the actual size of the ring body and the requirement. In other numbers, it is possible that the first locking tooth set 111 is not spaced apart from the second locking tooth set 112.

Fig. 6 and 7 are schematic diagrams for a pipe snap-fit connection according to an embodiment of the present invention. The pipe fitting 1 is sleeved on the outer surface of the pipe 2, and a sealing ring 3 and a gasket 4 are respectively arranged between the pipe 2 and the pipe fitting 1. When the pipe 2 is pressed tightly the sealing ring 3 and the pipe fitting 1 through the gasket 4, the sealing performance of the pipe joint is good, and water and air leakage cannot occur. However, the pipe 1 is detached from the pipe 2 for various reasons, and the ring body 11 of the present embodiment is applied. Before the pipe fitting 1 is not compressed, the ring body 11 is sleeved on the pipe fitting 2, and the gasket 4 and the sealing ring 3 are tightly propped. The ring body 11 is now in a first state, in the form of an unclosed ring, with a gap 113. After the pipe fitting 1 is compressed, the diameter of the pipe fitting 1 becomes small, the ring body 11 is in a closed ring shape under the limitation of the pipe fitting 1, the notch 113 disappears, at this time, the ring body 11 is in the second state, and the locking teeth are embedded into the outer surface of the pipe fitting 2.

When the tube 2 has a tendency to disengage from the tube 1, i.e. the tube 2 has a tendency to move in the disengaging direction. At this time, the tube 2 generates a frictional force directed in the disengaging direction against the locking teeth. The contact part of the locking tooth arranged towards the locking direction is deformed after being subjected to the friction force pointing to the disengaging direction, and the contact part rotates around the fixed part, namely, the sheet-shaped locking tooth is opened upwards. This movement causes the contact portion of the locking tooth to increase further in height from the inner surface of the collar, thereby increasing the depth of the contact portion into the pipe 2, increasing the locking force of the collar against the pipe 2, further locking the pipe 2 against removal from the pipe 1.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the teachings of this invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims (20)

1. The utility model provides a steel ring, includes circle body and locking mechanical system, its characterized in that, the circle body has internal surface and surface, locking mechanical system includes the locking part, the locking part set up in the circle body the internal surface, the locking part includes the locking tooth, the locking tooth is symmetrical arrangement for first axis, the locking tooth includes fixed part and contact site, has at least one the locking tooth, its the fixed part is close to the locking direction, its the contact site is close to the direction of breaking away from.

2. The steel ring of claim 1, wherein said locking feature is disposed to protrude from said inner surface.

3. The steel ring according to claim 2, wherein the fixing portion is fixedly disposed to the inner surface, and the contact portion is disposed to protrude from the inner surface and to be inclined in a direction of the second axis.

4. The steel ring according to claim 3, wherein the contact portion is thin, an inclination angle of the contact portion is smaller than 90 degrees, and the inclination angle is an included angle between a plane where the contact portion is located and the inner surface.

5. The steel ring according to claim 4, wherein the locking member includes a first locking tooth group, the first locking tooth group includes two or more locking teeth having different inclination directions, and a distance between each of the locking teeth and the fixing portion of the other locking teeth in the first locking tooth group is smaller than a distance between the contact portions.

6. The steel ring of claim 5, wherein the angle of inclination of each of the locking teeth in the first set of locking teeth is the same.

7. The steel ring of claim 6, wherein the number of locking teeth in the first set of locking teeth is even and is arranged axisymmetrically with respect to the first axis.

8. The steel ring of claim 7, wherein at least one of said locking teeth in said first set of locking teeth has said fixed portion thereof adjacent to the locking direction and said contact portion thereof adjacent to the disengagement direction.

9. The steel ring of claim 8, comprising two or more of said first set of locking teeth.

10. The steel ring of claim 9, wherein the two or more first sets of locking teeth are arranged in a central symmetry with respect to the second axis.

11. The steel ring of claim 10, wherein the locking member includes a second locking tooth group, the second locking tooth group including two or more locking teeth having different inclination directions, and a distance between each of the locking teeth and the fixing portion of the other locking teeth in the second locking tooth group is greater than a distance between the contact portions.

12. The steel ring of claim 11, wherein the angle of inclination of each of the locking teeth in the second set of locking teeth is the same.

13. The steel ring of claim 12, wherein the number of locking teeth in the second set of locking teeth is even and is axisymmetrically arranged with respect to the first axis.

14. The steel ring of claim 13, wherein the fixed portion of at least one of the locking teeth in the first and second sets of locking teeth is closer to a locking direction and the contact portion is closer to a disengaging direction.

15. The steel ring of claim 14, comprising two or more of said second sets of locking teeth.

16. The steel ring of claim 15, wherein the two or more second sets of locking teeth are arranged symmetrically about the second axis.

17. The steel ring of claim 16, wherein the locking tooth axis distance in the first set of locking teeth is greater than an axis distance of the locking teeth in the second set of locking teeth, the axis distance being a distance of the contact portion of the locking teeth to the first axis.

18. The steel ring of claim 1, wherein the steel ring is formed by one-time stamping.

19. The steel coil of claim 1, wherein the steel coil comprises a first state and a second state, and in the first state, the steel coil is in a non-closed ring shape.

20. The steel ring of claim 19, wherein in the second state, the steel ring is in a closed ring shape.

Images