TW202126919A - Protective sleeve nut for bolted connection of two mating components - Google Patents

Abstract

Embodiments of a protective sleeve nut are disclosed. The protective sleeve nut encloses the entirety of the portion of a bolt extending outside of a connection point between two or more mating components. Within the protective sleeve nut is a threaded cylindrical volume including an opening at one end to receive a bolt. The enclosed end opposite the end with the opening is configured to receive a tool for installing the protective sleeve nut. In some embodiments there may be two or more flats to accommodate a spanner, while in other embodiments there may be additional flats to allow for installation with a socket tool, while in additional embodiments there may be a patterned impression in the face of the enclosed end to receive a driver head.

Description

Protective sleeve nut for bolt connection of two mating parts

The embodiments of the present case generally relate to bolting between components, and more specifically to protective sleeve nuts.

In many industries, the connection of components connected by bolts is very common. From energy production to construction, cold solutions, such as bolted connections, are often used, while thermal solutions (such as welding) are less feasible or more costly than equally effective cold solutions.

In the case of bolt connection, a bolt is provided between a plurality of parts, and the connection is preloaded with a nut and a washer to fix the parts in position.

However, the bolt/nut/washer solution has many problems, causing this combination to be called "self-loosening". These problems include embedding (plastic deformation of bolt features and/or surfaces during preloading), lateral dynamic loads on bolted components, bolts/nuts/washers implementing common corrosion paths, and inappropriate components.

Due to environmental factors such as vibration, weather conditions, constant ambient temperature cycles, etc., each of these issues will reduce the pre-tensioning force over time. If intervening measures are not taken to remedy the situation, these consequences may lead to failure of the bolt connection, which may lead to personal injury and/or property damage.

Other issues include the costs associated with supply chain management, and the cost of managing each component, as well as the additional time and cost associated with the large-scale use of bolt/nut/washer combinations.

Therefore, alternative solutions of bolts/nuts/washers are needed to alleviate the above-mentioned problems.

This case generally involves a protective sleeve nut. In an embodiment, the protective sleeve nut surrounds the entire part of the bolt that extends beyond the connection point between the two or more mating parts. There is a threaded cylindrical volume in the protective sleeve nut, which has an opening at one end to accommodate a bolt. The closed end opposite to the open end is configured to accommodate a tool for installing the protective sleeve nut. In some embodiments, there may be two or more flat surfaces to accommodate the wrench, while in other embodiments, there may be additional flat surfaces to allow installation with a sleeve tool, and in other embodiments, the closed end There may be patterned indentations on the surface to receive a screwdriver head (for example, a flat or cross-head screwdriver, a star screwdriver, a hex screwdriver, etc.). In addition, in some embodiments, a protective sleeve nut can be used without a gasket, which removes the corrosion path, and by removing the component from design, supply chain management, and cost considerations, simplification of the bolt connection is achieved .

In one embodiment, the protective sleeve nut includes a main body, and an inner cylindrical volume with an inner diameter in the main body. The inner cylindrical volume has an inner surface that includes threads along substantially the entire surface thereof and is configured to engage with the threaded portion of the bolt. The protective sleeve nut also includes an opening at the first end of the cylindrical volume, and a closed second end, which includes at least two flat bearing surfaces, configured to engage with a tool.

In another embodiment, a system for connecting a first body and a second body is disclosed. The system includes a first hole in the first body and a second hole in the second body. The system also includes a bolt provided in the first and second holes. The system also includes a protective sleeve nut. The protective sleeve nut includes a main body, an inner cylindrical volume having a diameter and threads substantially along its inner surface, and an opening at the first end of the inner cylindrical volume , And a closed second end, which includes at least two flat bearing surfaces, configured to engage with a tool. The bolt is screwed into the inner cylindrical volume through the open first end.

In the following, reference is made to the examples of this case. However, it should be understood that this case is not limited to the specifically described embodiments. On the contrary, any combination of the following features and elements can be envisaged, whether related to different embodiments or not, to realize and implement this case. In addition, although the embodiments of this case can achieve advantages over other possible solutions and/or relative to the prior art, whether specific advantages can be achieved through known embodiments does not limit the case. Therefore, the following aspects, features, embodiments, and advantages are only exemplary, and should not be considered as elements or limitations of the scope of the appended patent application unless explicitly stated in the scope of the patent application. Similarly, references to "this case" should not be construed as a summary of any subject matter of the invention disclosed in this case, and unless explicitly stated in the scope of the patent application, it should not be considered as an element or limitation of the scope of the appended patent application.

In this case, an embodiment of the protective sleeve nut is disclosed. In an embodiment, the protective sleeve nut surrounds the entire part of the bolt that extends beyond the connection point between the two or more mating parts. There is a threaded cylindrical volume in the protective sleeve nut, which has an opening at one end to accommodate a bolt. The closed end opposite to the open end is configured to accommodate a tool for installing the protective sleeve nut. In some embodiments, there may be two or more flat surfaces to accommodate the wrench, while in other embodiments, there may be additional flat surfaces to allow installation with a sleeve tool, and in other embodiments, the closed end There may be patterned indentations on the surface to receive a screwdriver head (for example, a flat or cross-head screwdriver, a star screwdriver, a hex screwdriver, etc.). In addition, in some embodiments, a protective sleeve nut can be used without a gasket, which removes the corrosion path, and by removing the component from design, supply chain management, and cost considerations, simplification of the bolt connection is achieved .

By replacing the nut and washer from the bolted embodiment, the embedding problem can be alleviated. In the prior art, the nut only engages a part of the exposed bolt threads, so that the preload force is concentrated on those threads of the nut engaged with the bolt thread, which will cause the bolt connection to deform and reduce the effective preload force, thereby Reduce the effectiveness of bolts. This will increase maintenance requirements and costs. In the embodiment of the present case, since the protective sleeve nut engages all available bolt threads with the thread of the protective sleeve nut and covers the exposed part of the bolt, the influence can be reduced. Joining more bolt threads can reduce joint deformation caused by embedding, increase the effect of preload, and improve bolt performance.

The embodiment of this case can additionally reduce the corrosion path of the existing method. In the bolt/nut/washer method, there are many gaps and areas where liquid, dirt, and other contaminants may collect and leak. For example, in the joints formed between the nut and the bolt, the nut and the washer, the washer and the bolt, and in the washer separation when using a separate washer. In these existing methods, the presence of contaminants in these gaps and voids will cause corrosion of bolts, nuts, and/or washers over time, thereby reducing the performance of the bolt connection. With existing methods, continuous maintenance and related costs are required to mitigate this degradation. In an embodiment of the present invention, the protective sleeve nut substantially surrounds the entire exposed bolt surface and only locates a single potential seam so that contaminants do not accumulate. Only the outer surface of the protective sleeve nut is exposed to the environment and will have little or no structural features to retain contaminants.

Figure 1 illustrates a cross-sectional view of a protective sleeve nut 100 according to some embodiments of the present case. In an embodiment, the protective sleeve nut 100 includes a main body 110, an inner cylindrical volume 120, an open first end 130, and a closed second end 140.

In an embodiment, the main body 110 may have a substantially cylindrical shape, but other shapes may be used according to design considerations. The size of the main body 110 can be set to have a height 113 and an outer diameter 117 such that the main body 110 substantially surrounds a bolt on which the main body 110 is disposed. In some embodiments, the main body 110 may be composed of steel, while in other embodiments, in addition to plastic, nylon, phenolic, or other synthetic materials or material combinations suitable for specific applications, other materials, such as aluminum, Iron, alloy, or other metals.

The inner cylindrical volume 120 is arranged in the main body 110 of the protective sleeve nut 100. In an embodiment, the inner cylindrical volume 120 has an inner diameter 125, which has threads along substantially its entire surface to engage a bolt, and is long enough to substantially surround the exposed portion of the bolt.

The open first end 130 includes an opening configured to receive a bolt, and is aligned with the internal volume 120.

In an embodiment, the closed second end 140 closes a portion of the inner cylindrical volume 120 relative to the open first end 130 to substantially enclose the bolt disposed in the inner cylindrical volume 120. In some embodiments, the closed second end 140 includes one or more flat surfaces 145 on the outer surface to enable engagement with a tool such as a wrench. In other embodiments, for example, an additional flat surface may be provided to accommodate other tools, such as a casing wrench. In some embodiments, the top surface 147 of the closed second end can be configured to receive a screwdriver tool bit, such as a flat head, a cross head, a star head, or a screwdriver tool head of other configurations, or in applications where bolts are tightened. Other tools that can manipulate the protective sleeve nut 100.

In an example, the one or more planes 145 extend to a portion of the length of the main body 110. In another example, there are one or more planes 145. The one or more planes 145 are located at the closed second end 140 relative to the opening 130. Because the threads of the inner cylindrical volume 120 extend substantially the entire length of the inner volume 120, a helical force torque can be applied to one end (for example, the closed second end 140). Positioning one or more flat surfaces 145 at the closed second end 140 can reduce potential interference when a spiral force is applied to these flat surfaces, thereby facilitating user engagement. In addition, positioning one or more planes 145 at the closed second end 140 allows the use of standard well depth sleeves rather than the need for custom deep well sleeves when using extra-long bolts.

In an exemplary embodiment, for example, in order to accommodate M24 bolts, the inner diameter 125 may be selected to be 24 mm, and the outer diameter 117 may be selected to be 40 mm. In an embodiment that accommodates M20 bolts, the inner diameter 125 can be selected to be 20 mm, and the outer diameter 117 can be selected to be 33 mm. In an embodiment that accommodates M16 bolts, the inner diameter 125 can be selected to be 16 mm, and the outer diameter 117 can be selected to be 28 mm. It can also accommodate additional bolts while keeping the ratio of the measured value of the inner diameter 125 to the measured value of the outer diameter 117 at about 0.6. Those skilled in the art will understand that although the ratio is universal, any ratio suitable for a particular application can be adopted without departing from the spirit and scope of the case.

FIG. 2 illustrates an example of the embodiment 200 of the protective sleeve nut 100. As shown in FIG. In an embodiment, the implementation 200 includes a protective sleeve nut 100, a first body 210, a second body 220, and a bolt 230.

In the embodiment, the first body 210 has a first hole 215 passing therethrough, and the second body 220 has a second hole 225 passing therethrough. In some embodiments, at least one of the first hole 215 and the second hole 225 is threaded.

The bolt 230 is arranged in the first hole 215 and the second hole 225, and the exposed part 235 of the bolt 230 is basically enclosed in the protective sleeve nut 100. In an embodiment, the thread of the bolt 230 is engaged in the thread of the inner cylindrical volume 120 (FIG. 1), while in other embodiments, the thread of the bolt 230 may be engaged in the first body 210, the second body 220, and the protection In the thread of the casing nut 100.

Although the foregoing content is directed to the embodiments of the case, other and further embodiments of the case can be designed without departing from the basic scope of the case, and the scope of the case is determined by the scope of the attached patent application.

100: Protection sleeve nut 110: main body 113: height 117: Outer diameter 120: Internal cylindrical volume 125: inner diameter 130: first end 140: second end 145: Plane 147: top surface 200: Implementation 210: The first subject 215: first hole 220: The second subject 225: second hole 230: Bolt 235: exposed part

Therefore, the above-mentioned features of the case can be understood in detail, and the case can be described in more detail by referring to the embodiments. The present invention is briefly summarized above, and some embodiments are shown in the accompanying drawings. However, it should be noted that the drawings only show exemplary embodiments, and therefore should not be considered as a limitation of their scope, as other equal embodiments may be allowed in this case.

Figure 1A depicts a cross-sectional view of a protective sleeve nut according to some embodiments of the present case.

Fig. 1B records a plan view of the protective sleeve nut according to the embodiment of the present case.

Fig. 2 shows an example of an embodiment of the protective sleeve nut.

For ease of understanding, the same component symbols are used where possible to represent the same components in the drawings. It is expected that the elements and features of one embodiment can be advantageously incorporated into other embodiments without further explanation.

Domestic deposit information (please note in the order of deposit institution, date and number) none Foreign hosting information (please note in the order of hosting country, institution, date, and number) none

100: Protection sleeve nut

200: Implementation

210: The first subject

215: first hole

220: The second subject

225: second hole

230: Bolt

235: exposed part

Claims (9)

A protective sleeve nut, including: A subject An inner cylindrical volume, the inner cylindrical volume is located in the main body, has an inner diameter, the inner cylindrical volume has an inner surface, and the inner surface includes a thread substantially along the inner cylindrical volume and is configured with A threaded part of a bolt engages; An opening positioned at a first end of the inner cylindrical volume; and A closed second end including at least two flat bearing surfaces configured to engage with a tool. The protective sleeve nut according to claim 1, wherein the main body comprises steel. The protective sleeve nut according to claim 1, wherein the main body includes a main body wall, and a thickness of the main body wall is defined by a ratio of the outer diameter of the main body to the diameter of an inner cylindrical space, and the ratio is about 0.6. A system for connecting a first body and a second body, comprising A first hole, the first hole is located on the first body; A second hole, the second hole is located on the second body; A bolt, the bolt is arranged in the first hole and the second hole; A protective sleeve nut, including: A subject An inner cylindrical volume, the inner cylindrical volume is located in the main body, has an inner diameter, the inner cylindrical volume has an inner surface, and the inner surface includes a thread substantially along the inner cylindrical volume and is configured with A threaded portion of a bolt engages. An opening positioned at a first end of the inner cylindrical volume; and A closed second end including at least two flat bearing surfaces configured to engage with a tool; and Wherein, the bolt is screwed into the inner cylindrical volume through the open first end. The system for connecting a first body and a second body as described in claim 4, wherein the body includes steel. The system for connecting a first body and a second body according to claim 4, wherein the body includes a body wall, and a thickness of the body wall is equal to the diameter of the outer diameter of the body and the diameter of the inner cylindrical space. It is limited by a ratio, which is approximately 0.6. The system for connecting a first body and a second body according to claim 4, wherein at least one of the first hole and the second hole has a thread. The system for connecting a first body and a second body according to claim 7, wherein the first hole and the second hole both have threads. The system for connecting a first body and a second body as described in claim 4, wherein a gasket is not used.

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