Buckle type blanking cap connected with threads

Abstract

The invention relates to the technical field of mechanical engineering structures, in particular to a buckle type blanking cap connected with threads. The device comprises a retainer structure, an elastic piece structure, a thread-imitating elastic tooth structure, a deformation joint structure and a handheld structure, wherein the elastic piece structure is arranged on the elastic piece structure; at least two elastic inner teeth are evenly distributed on the thread-imitating elastic tooth structure in the circumferential direction, the axis direction of the elastic inner teeth and the corresponding thread spiral line deviate in the same direction, and the thread-imitating elastic tooth structure and the retainer structure are connected through the elastic piece structure. The deformation joint structure is a gap adjacent to the elastic piece structure, and the handheld structure is arranged on the periphery of the protective ring structure. When the blanking cap is connected with the threads, screwing is not needed, rapid connection can be achieved through direct pressing, the operation time of the operation and maintenance process is shortened, and the phenomenon of jamming caused by damage or deformation of the threads is avoided.

Description

Technical Field

[0001] This invention relates to the field of mechanical engineering structure technology, and more specifically, to a snap-on plug that is connected to a thread. Background Technology

[0002] Threaded connections are a type of detachable fixed connection. Due to their simple structure, reliable connection, and convenient assembly and disassembly, they are widely used in various fields. Commonly known threaded connections are achieved through the mating of internal and external threads. Connection is made by screwing in the direction of the threads, and disassembly is achieved by screwing in the opposite direction.

[0003] A plug is a protective structure for the threads of a solid rocket motor. It connects to the external threads of the solid rocket motor nozzle via internal threads, protecting the internal components from mechanical damage. The plug must be removed from the nozzle before inspection, maintenance, or use of the solid rocket motor, and then replaced afterward.

[0004] Ordinary plugs are typically made of ABS non-metallic material, with a fully threaded connection and standard internal threads. Current technology allows for the installation and removal of ordinary plugs only by screwing them in and out. The time required for this is limited by the thread parameters; the longer the thread, the longer the installation and removal time, making rapid installation and removal impossible. Furthermore, ABS plugs are susceptible to damage during installation and removal due to the cutting action of the nozzle's metal threads, potentially leading to thread stripping and jamming, preventing removal. Summary of the Invention

[0005] This invention aims to at least partially solve one of the technical problems in related technologies. Therefore, the purpose of this invention is to provide a snap-on plug that connects to a threaded connection, solving the problem of plug jamming during use and enabling quick installation and removal of the plug.

[0006] To achieve the above and other related objectives, the present invention provides a snap-fit ​​plug that connects to a threaded connection, comprising: Protective ring structure; An elastic sheet structure is disposed on the elastic sheet structure; A thread-like elastic tooth structure has at least two elastic internal teeth evenly distributed along the circumference. The axis of the elastic internal teeth is offset in the same direction as the corresponding thread helix. The thread-like elastic tooth structure and the retaining ring structure are connected by the elastic sheet structure. The expansion joint structure is a gap adjacent to the elastic sheet structure.

[0007] In one embodiment of the present invention, it further includes: A handheld structure is provided on the outer periphery of the protective ring structure.

[0008] In one embodiment of the present invention, the thread-like elastic tooth structure includes four elastic internal teeth, which are evenly distributed along the circumferential direction.

[0009] In one embodiment of the present invention, the axial direction of the four elastic internal teeth is offset from the corresponding thread helix by no more than one pitch.

[0010] In one embodiment of the present invention, the tooth profile of the elastic internal tooth is trapezoidal.

[0011] In one embodiment of the present invention, the elastic sheet structure is an arc-shaped structure.

[0012] In one embodiment of the present invention, the expansion joint structure consists of eight gaps connected to the four elastic internal teeth.

[0013] In one embodiment of the present invention, the handheld structure consists of four protrusions evenly distributed around the outer periphery of the protective ring structure.

[0014] In one embodiment of the present invention, the bottom of the expansion joint structure is entirely rounded.

[0015] In one embodiment of the present invention, the material of the thread-like elastic tooth structure, elastic sheet structure, handheld structure, and protective ring structure is one of polypropylene, polyurethane, and fiberglass.

[0016] As described above, the snap-on plug with threaded connection of the present invention has the following beneficial effects: The present invention provides a snap-on plug for threaded connection, comprising a thread-like elastic tooth structure, an elastic sheet structure, an expansion joint structure, a handheld structure, and a protective ring structure. The plug of the present invention does not require screwing when connected to the thread; it can be quickly connected by direct pressing, reducing operation time during operation and maintenance; and avoiding jamming caused by thread damage or deformation.

[0017] The present invention provides a snap-on plug that is connected to a thread, wherein the elastic sheet has an arc-shaped structure. When the elastic inner teeth are subjected to an outward force, the structure deforms and opens outward. When the elastic inner teeth are not subjected to force, the structure rebounds and clamps, while the arc-shaped structure ensures that the clamping force does not disappear.

[0018] The present invention provides a snap-on plug that is connected to a threaded connection. The expansion joint structure consists of eight gaps connected to four elastic sheet structures. The expansion joint structure is used to control the independent deformation capacity of the elastic sheet structures and avoid stress concentration in the overall structure of the plug. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a snap-fit ​​plug with a threaded connection according to an embodiment of the present invention; Figure 2 This is a schematic diagram showing the thread-like elastic tooth structure of a snap-on plug with a threaded connection according to an embodiment of the present invention. Figure 3 This is a schematic diagram showing the details of an elastic sheet structure connected to a thread according to an embodiment of the present invention; Figure 4 This is a schematic diagram showing the details of a deformation joint structure connected to a thread according to an embodiment of the present invention; Figure 5 This is a detailed schematic diagram of a handheld structure with a threaded connection according to an embodiment of the present invention; Figure 6 This is a schematic diagram showing the details of a retaining ring structure connected to a thread according to an embodiment of the present invention; Figure 7 This is a cross-sectional schematic diagram of a retaining ring structure connected to a thread according to an embodiment of the present invention.

[0020] Among them: 1. Imitation thread elastic tooth structure; 2. Elastic sheet structure; 3. Expansion joint structure; 4. Handheld structure; 5. Protective ring structure. Detailed Implementation

[0021] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0022] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the illustrations only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0023] Terms such as "first" or "second" may be used to describe various components, but these components are not limited by the terms described above. The terms described above are used to distinguish one component from another; for example, without departing from the scope of the concept according to this disclosure, a first component may be referred to as a second component, and similarly, a second component may be referred to as a first component.

[0024] Furthermore, "connected / linked" indicates that one component is directly connected to another component or indirectly connected through another component. Unless explicitly stated otherwise in the sentence, the singular form may include the plural form. Additionally, the terms "comprising / including" or "containing / including" as used in this specification indicate the presence or addition of one or more components, steps, operations, and elements. Specific structural or functional descriptions of examples of embodiments of the concepts disclosed in this specification are merely illustrative to describe examples of embodiments of the concepts, and examples of embodiments of the concepts can be implemented in various forms, but these descriptions are not limited to the examples of embodiments described in this specification.

[0025] Based on the concept, various modifications and changes can be applied to examples of embodiments, such that examples of embodiments will be illustrated in the accompanying drawings and described in the specification. However, examples of embodiments based on the concept are not limited to specific embodiments, but include all changes, equivalents, or substitutions included within the spirit and scope of this disclosure.

[0026] It should be understood that when describing an element as "connected" or "linked" to another element, the element may be directly connected or linked to the other element, or it may be connected or linked to the other element via a third element. Conversely, it should be understood that when an element is described as "directly connected to" or "directly linked to" another element, no other element is placed between them. Other expressions describing relationships between components (i.e., "between" and "directly between" or "adjacent to" and "directly adjacent to") need to be interpreted in the same way.

[0027] The terminology used in this specification is for the purpose of describing specific examples of implementations only and is not intended to limit this disclosure. The singular form may include the plural form unless there is an explicit contrary meaning in the context. It should be understood in this specification that the terms "comprising" or "having" indicate the presence of the features, quantities, steps, operations, components, parts, or combinations thereof described in the specification, but do not preclude the possibility of the presence or addition of one or more other features, quantities, steps, operations, components, parts, or combinations thereof.

[0028] Unless otherwise defined, all terms used herein (including technical or scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art. If a term is not clearly defined in a common dictionary in this specification, it shall be interpreted as having the same meaning as in the context of the relevant art, and not as an ideal or overly formal meaning.

[0029] Descriptions of known components and processing techniques may be omitted to avoid unnecessarily obscuring the embodiments of this disclosure.

[0030] Throughout this specification, the same reference numerals refer to the same elements. Therefore, even if a reference numeral is not mentioned or described with reference to one drawing, it may be mentioned or described with reference to another drawing. Furthermore, even if a reference numeral is not shown in one drawing, it may be mentioned or described with reference to another drawing.

[0031] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been provided in the embodiments of this disclosure to facilitate a better understanding of the disclosure. However, the technical solutions claimed in this disclosure can be implemented even without these technical details and various variations and modifications based on the following embodiments.

[0032] Please see Figure 1 , Figure 1 This is a schematic diagram of a snap-on plug with threaded connection according to an embodiment of the present invention. The present invention provides a snap-on plug with threaded connection, comprising: a retaining ring structure 5, an elastic sheet structure 2, a thread-like elastic tooth structure 1, an expansion joint structure 3, and a handheld structure 4. The elastic sheet structure 2 is disposed on the elastic sheet structure 2; the thread-like elastic tooth structure 1 has at least two elastic internal teeth evenly distributed along the circumferential direction, the axis of the elastic internal teeth being offset in the same direction as the corresponding thread helix; the thread-like elastic tooth structure 1 and the retaining ring structure 5 are connected through the elastic sheet structure 2; the expansion joint structure 3 is a gap adjacent to the elastic sheet structure 2; and the handheld structure 4 is disposed on the outer periphery of the retaining ring structure 5.

[0033] Please see Figure 2 , Figure 2 This is a schematic diagram showing the thread-like elastic tooth structure of a snap-fit ​​plug with a threaded connection according to an embodiment of the present invention.

[0034] Specifically, the simulated thread elastic tooth structure 1 includes four elastic internal teeth, which are evenly distributed along the circumferential direction. The axial direction of the four elastic internal teeth is offset from the corresponding thread helix by no more than one thread pitch. The tooth profile of the elastic internal teeth is trapezoidal.

[0035] In one embodiment of the present invention, the thread-like elastic tooth structure 1 consists of four elastic internal teeth, which are evenly distributed along the circumferential direction and offset along the helical line of the thread that it mates with. The overall offset distance of the four teeth does not exceed one pitch. The tooth cross section is trapezoidal and the tooth thickness is determined according to the thread pitch.

[0036] Please see Figure 3 , Figure 3 This is a detailed schematic diagram of an elastic sheet structure connected to a thread according to an embodiment of the present invention. The elastic sheet structure 2 is an arc-shaped structure.

[0037] In one embodiment of the present invention, the elastic sheet structure 2 serves as an elastic support, connecting the thread-like elastic tooth structure 1 and the retaining ring structure 5, while also providing a clamping force to the thread-like elastic tooth structure 1. The elastic sheet structure 2 is an arc-shaped structure. When the elastic inner tooth is subjected to an outward force, the structure deforms and opens outward. When the elastic inner tooth is not subjected to force, the structure rebounds and clamps, while the arc-shaped structure ensures that the clamping force does not disappear.

[0038] Please see Figure 4 , Figure 4 This is a detailed schematic diagram of an expansion joint structure connected to a thread according to an embodiment of the present invention. The expansion joint structure 3 consists of eight slots connected to the four elastic internal teeth. The bottom of the expansion joint structure 3 is entirely rounded.

[0039] In one embodiment of the present invention, the expansion joint structure 3 consists of eight gaps connected to four elastic sheet structures 2. The main function of this structure is to control the independent deformation capability of the elastic sheet structures 2 and to avoid stress concentration phenomena that would otherwise obstruct the overall structure.

[0040] Please see Figure 5 , Figure 5 This is a detailed schematic diagram of a handheld structure with a threaded connection according to an embodiment of the present invention. The handheld structure 4 consists of four protrusions evenly distributed on the outer periphery of the protective ring structure 5.

[0041] In one embodiment of the present invention, the handheld structure 4 consists of four protrusions evenly distributed on the outer circumference of the plug and protective ring structure 5. This structure is offset from the elastic teeth to enable gripping during the assembly and disassembly process.

[0042] Please see Figure 6 , Figure 7 , Figure 6 This is a schematic diagram showing the details of a retaining ring structure connected to a thread according to an embodiment of the present invention; Figure 7 This is a cross-sectional schematic diagram of a retaining ring structure connected to a thread according to an embodiment of the present invention.

[0043] In one embodiment of the present invention, the protective ring structure 5 is the remaining solid structure excluding the imitation thread elastic tooth structure 1, elastic sheet structure 2, expansion joint structure 3, and handheld structure 4, which is used to meet the strength of disassembly and assembly and the integrity of the structure, while providing protection for the inside of the nozzle.

[0044] The simulated thread elastic tooth structure 1, elastic sheet structure 2, handheld structure 4, and protective ring structure 5 are made of one of polypropylene, polyurethane, or fiberglass. Specifically, the materials used in this invention are non-metallic materials such as PP (polypropylene), PU (polyurethane), and GFRP (fiberglass).

[0045] In one embodiment of the present invention, a snap-on plug with a threaded connection is used by aligning the threaded elastic tooth structure 1 with the nozzle thread to be plugged, holding the handheld structure 4, and pressing the retaining ring structure 5. The elastic plate structure 2 slightly opens, and the threaded elastic tooth structure 1 snaps into the nozzle thread. The elastic plate structure 2 then drives the threaded elastic tooth structure 1 to tightly grip the nozzle thread. To remove the plug, hold the handheld structure 4 and pull the retaining ring structure 5 outward. The elastic plate structure 2 opens, and the threaded elastic tooth structure 1 disengages from the thread it is connected to.

[0046] In summary, the snap-on plug of the present invention, which is connected to a thread, includes a thread-like elastic tooth structure, an elastic sheet structure, an expansion joint structure, a handheld structure, and a protective ring structure. When the plug of the present invention is connected to the thread, it does not need to be screwed on; it can be quickly connected by simply pressing, reducing the operation time during operation and maintenance; and avoiding the phenomenon of jamming due to thread damage or deformation.

[0047] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A snap-fit ​​plug that connects to a threaded connection, characterized in that, include: Protective ring structure (5); as well as, An elastic sheet structure (2) is disposed on the elastic sheet structure (2); The thread-like elastic tooth structure (1) has at least two elastic internal teeth evenly distributed along the circumferential direction. The axial direction of the elastic internal teeth is offset in the same direction as the corresponding thread helix. The thread-like elastic tooth structure (1) and the retaining ring structure (5) are connected by the elastic sheet structure (2). The expansion joint structure (3) is a gap adjacent to the elastic sheet structure (2).

2. A snap-fit ​​plug with threaded connection according to claim 1, characterized in that, Also includes: Handheld structure (4) is disposed on the outer periphery of the protective ring structure (5).

3. A snap-fit ​​plug with threaded connection according to claim 1 or 2, characterized in that: The simulated thread elastic tooth structure (1) includes 4 elastic internal teeth, which are evenly distributed along the circumferential direction.

4. A snap-fit ​​plug with threaded connection according to claim 3, characterized in that: The axial direction of the four elastic internal teeth is offset from the corresponding thread helix by no more than one pitch.

5. A snap-fit ​​plug with threaded connection according to claim 4, characterized in that: The cross-section of the elastic internal tooth is trapezoidal.

6. A snap-fit ​​plug with threaded connection according to claim 5, characterized in that: The elastic sheet structure (2) is an arc-shaped structure.

7. A snap-fit ​​plug with threaded connection according to claim 3, characterized in that: The deformation joint structure (3) consists of 8 gaps connected to the 4 elastic internal teeth.

8. A snap-fit ​​plug with threaded connection according to claim 6, characterized in that: The handheld structure (4) consists of four protrusions evenly distributed around the outer periphery of the protective ring structure (5).

9. A snap-fit ​​plug with threaded connection according to claim 7, characterized in that: The bottom of the expansion joint structure (3) is entirely rounded.

10. A snap-fit ​​plug with threaded connection according to claim 2, characterized in that: The materials of the simulated thread elastic tooth structure (1), elastic sheet structure (2), hand-held structure (4), and protective ring structure (5) are one of polypropylene, polyurethane, and fiberglass.

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