casing

Abstract

The present invention belongs to the field of mounting parts, and in particular, relates to a sleeve, which comprises an outer sleeve, an elastic expansion assembly and an inner sleeve, wherein the side wall of the outer sleeve is provided with a through hole; the elastic expansion assembly is provided on the outer sleeve, and the elastic expansion assembly comprises an elastic support member and an expansion member provided on the elastic support member, wherein the expansion member corresponds to the through hole and extends into the interior of the outer sleeve through the through hole, and the elastic expansion assembly can be inserted into the external hole together with the outer sleeve; the inner sleeve can be inserted into the interior of the outer sleeve, and the inner sleeve can push the expansion member, so that the expansion member overcomes the elastic force of the elastic support member and moves outward to abut against the inner wall of the external hole, so as to fix the outer sleeve in the external hole. When using the sleeve, it is only necessary to drill an external hole on the wall for the outer sleeve and the elastic expansion assembly to be inserted, which shortens the construction amount and reduces the damage to the internal structure of the wall. The sleeve is simple and convenient to fix, and the sleeve can be easily disassembled when the installation fails, is removed or repaired.

Description

Technical Field

[0001] The invention relates to the technical field of mounting parts, and in particular to a sleeve. Background Art

[0002] In engineering projects, it is common to penetrate thick walls and lay pipelines and equipment, such as the opening of thick-walled silos in concrete silos. In the usual through-the-wall construction method, in order to facilitate the installation and fixing of the casing used for the construction of pipelines and equipment, the drill hole needs to be appropriately enlarged to fill the base material and solidify the seal between the casing and the hole wall. This method not only causes the drilling and excavation surface of the wall to be too large, the construction volume becomes larger and the time is longer, and it is easy to damage the internal main load-bearing steel frame, but also it is difficult to remove the casing when the installation fails, is removed or repaired. Summary of the invention

[0003] An embodiment of the present invention provides a casing for solving the problem in the existing through-wall construction method that the installation of the casing not only causes the drilling surface of the wall to be too large, the construction volume becomes larger and the time is longer, and the internal main load-bearing steel frame is easily damaged, but also it is difficult to remove the casing when the installation fails, is removed or repaired.

[0004] According to an embodiment of the present invention, the sleeve comprises:

[0005] An outer sleeve, wherein a side wall of the outer sleeve is provided with a through hole;

[0006] An elastic expansion assembly is arranged on the outer sleeve, the elastic expansion assembly comprises an elastic support member and an expansion member arranged on the elastic support member, the expansion member corresponds to the through hole and partially extends into the interior of the outer sleeve through the through hole, and the elastic expansion assembly can be inserted into the external hole together with the outer sleeve; and

[0007] The inner sleeve is detachably inserted into the outer sleeve. When the inner sleeve is inserted into the outer sleeve, the inner sleeve can push the expansion piece so that the expansion piece overcomes the elastic force of the elastic support piece and moves outward to abut against the inner wall of the external hole to fix the outer sleeve in the external hole.

[0008] Optionally, the elastic expansion component is sleeved on the outer sleeve.

[0009] Optionally, there are multiple through holes, and the multiple through holes are evenly distributed along the circumference of the outer sleeve. The number of the expansion members is the same as the number of the through holes, and the multiple expansion members correspond to the multiple through holes one by one.

[0010] Optionally, the elastic support member includes a sleeve, which is provided with a mounting hole corresponding to the through hole, and the sleeve is provided with supporting parts at both ends of the mounting hole, which extend into the interior of the outer sleeve through the through hole. The tensioning member includes a clamping block, which is installed in the mounting hole and supported on the supporting part. A limiting part is provided in the mounting hole, and the limiting part is used to prevent the clamping block from falling out of the mounting hole.

[0011] Optionally, the through hole is a strip hole extending axially along the outer sleeve, the clamping block is a strip block, a V-shaped groove is provided on the side of the strip block away from the outer sleeve, and the limiting portion is used to stop the bottom of the V-shaped groove.

[0012] Optionally, the elastic support member is a sheet metal member, which is made of a metal plate with a thickness of less than 0.5 mm.

[0013] Optionally, the size of the through hole is larger than the size of the expansion piece.

[0014] Optionally, the elastic expansion assembly is arranged in the through hole, a gap is provided between the expansion piece and the through hole, the elastic support piece is located in the gap, and one end of the elastic support piece is connected to the expansion piece, and the other end is connected to the inner wall of the outer sleeve.

[0015] Optionally, the outer sleeve and the inner sleeve both have a front end and a rear end, and the front ends of the outer sleeve and the inner sleeve are both tapered.

[0016] Optionally, the rear end of the outer sleeve is provided with an internal thread, and the rear end of the inner sleeve is provided with an external thread corresponding to the internal thread.

[0017] The sleeve provided by the present application has the following beneficial effects: compared with the prior art, the sleeve of the present application is provided with an elastic expansion component on the outer sleeve. After the outer sleeve is inserted into the external hole on the wall together with the elastic expansion component, the inner sleeve is inserted into the outer sleeve and exerts a thrust on the expansion component to make the expansion component move outward to abut against the inner wall of the external hole, thereby achieving the fixing of the sleeve. After the inner sleeve is taken out, the thrust exerted by the inner sleeve on the expansion component disappears, the expansion component is reset under the elastic action of the elastic support, the expansion component is separated from the inner wall of the external hole, and the outer sleeve and the elastic expansion component can be taken out of the external hole together. When using the sleeve, it is only necessary to drill a hole on the wall for the outer sleeve and the elastic expansion component to be inserted, which shortens the construction amount and reduces the damage to the internal structure of the wall. The sleeve is simple and convenient to fix, and the sleeve can be easily disassembled when the installation fails, is removed or repaired. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] in:

[0020] Figure 1 is a schematic diagram of the overall structure of a sleeve shown in one embodiment of the present invention;

[0021] Figure 2 is an exploded view of a casing according to an embodiment of the present invention;

[0022] Figure 3 is a disassembly diagram of an elastic expansion assembly of a sleeve shown in an embodiment of the present invention;

[0023] Figure 4 It is a schematic diagram of the processing engineering of the elastic support member of the sleeve shown in one embodiment of the present invention;

[0024] Figure 5 is a cross-sectional view showing an outer sleeve of a sleeve and an elastic expansion assembly installed in an external hole according to an embodiment of the present invention;

[0025] Figure 6 yes Figure 5 A magnified view of the structure at A;

[0026] Figure 7 is Figure 5 A cross-sectional view showing a method of inserting an inner sleeve into an outer sleeve and squeezing the expansion member to move it outward until it abuts against the inner wall of the external hole;

[0027] Figure 8 yes Figure 7 Enlarged view of the structure at B.

[0028] Description of main component symbols:

[0029] 100, outer sleeve; 101, through hole; 102, internal thread;

[0030] 200, elastic expansion assembly;

[0031] 210, elastic support member; 211, sleeve; 2111, mounting hole; 212, supporting portion; 213, limiting portion;

[0032] 220, expansion piece; 221, V-shaped groove;

[0033] 300, inner casing; 301, external thread. DETAILED DESCRIPTION

[0034] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Preferred embodiments of the present invention are provided in the drawings. However, the present invention can be implemented in many other different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0035] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0036] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0039] As described in the background technology, in the usual through-the-wall construction method, in order to facilitate the installation and fixation of the casing used for the construction of pipelines and equipment, the drill hole needs to be appropriately enlarged to fill the base material and solidify the seal between the casing and the hole wall. This method not only causes the drilling surface of the wall to be too large, the construction volume becomes larger and the time is longer, which is easy to damage the internal main load-bearing steel frame, but also it is more difficult to remove the casing when the installation fails, is removed or repaired.

[0040] In order to solve the above problems, an embodiment of the present invention provides a sleeve for installation in an external hole on a wall or other objects to provide a channel for laying pipelines and constructing equipment.

[0041] In the embodiment of the present invention, Figure 1-2 and Figure 5-8 As shown, the sleeve includes an outer sleeve 100 , an elastic expansion component 200 and an inner sleeve 300 .

[0042] The side wall of the outer sleeve 100 is provided with a through hole 101 .

[0043] The elastic expansion component 200 is arranged on the outer sleeve 100. The elastic expansion component 200 includes an elastic support member 210 and an expansion member 220 arranged on the elastic support member 210. The expansion member 220 corresponds to the through hole 101 and partially extends into the interior of the outer sleeve 100 through the through hole 101. The elastic expansion component 200 can be inserted into the external hole together with the outer sleeve 100.

[0044] The inner sleeve 300 is detachably inserted into the outer sleeve 100. When the inner sleeve 300 is inserted into the outer sleeve 100, the inner sleeve 300 can push the expansion member 220 so that the expansion member 220 overcomes the elastic force of the elastic support member 210 and moves outward to abut against the inner wall of the external hole, so as to fix the outer sleeve 100 in the external hole.

[0045] It is understandable that the size of the through hole 101 is larger than the size of the expansion member 220 to ensure that the expansion member 220 can move normally in the through hole 101. The expansion member 220 moves outward, that is, the expansion member 220 extends out of the through hole 101.

[0046] It should be noted that the elastic support member 210 has elastic deformation and can be made of organic elastic material (such as rubber) or inorganic elastic material (such as spring steel, memory alloy). The function of the elastic support member 210 is to elastically set the expansion block in the through hole 101 on the outer sleeve 100, so that when the inner sleeve 300 is inserted into the outer sleeve 100 and pushes the expansion block to abut, it can be deformed to make the expansion block move outward to the inner wall of the external hole stuck in the wall to play a fixing role, and after the inner sleeve 300 is removed from the outer sleeve 100, the elastic support member 210 returns to its original state, thereby driving the expansion block to break away from the conflict with the inner wall of the external hole, making it easy to disassemble.

[0047] When in use, first insert the outer sleeve 100 and the elastic expansion assembly 200 together into the external hole of the object where the pipeline or equipment needs to be laid. At this time, the elastic support member 210 and the expansion member 220 remain in a natural state, and the expansion member 220 does not contact the inner wall of the external hole. Figure 5-6 shown.

[0048] Then the inner sleeve 300 is inserted into the outer sleeve 100, and the outer wall of the inner sleeve 300 abuts against the expansion member 220. As the inner sleeve 300 continues to be inserted, the expansion member 220 and the elastic support member 210 are pushed outward, and the expansion member 220 contacts the inner wall of the external hole until it is compressed, so that the sleeve is fixed in the external hole. Figure 7-8 shown.

[0049] In an embodiment of the present invention, the sleeve is provided with an elastic expansion component 200 on the outer sleeve 100. After the outer sleeve 100 together with the elastic expansion component 200 is inserted into the external hole on the wall, the inner sleeve 300 is inserted into the outer sleeve 100 to apply a thrust to the expansion component 220 so that the expansion component 220 moves outward until it abuts against the inner wall of the external hole, thereby achieving the fixation of the sleeve in the external hole. After the inner sleeve 300 is taken out, the force applied by the inner sleeve 300 to the expansion component 220 disappears, the expansion component 220 is reset under the elastic action of the elastic support member 210, the expansion component 220 is detached from the inner wall of the external hole, and the outer sleeve 100 and the elastic expansion component 200 can be taken out of the external hole together.

[0050] When using the sleeve, it is only necessary to drill an external hole on the wall into which the outer sleeve 100 and the elastic expansion assembly 200 can be inserted, thereby shortening the construction workload and reducing damage to the internal structure of the wall. The sleeve is simple and convenient to fix, and the sleeve can be easily disassembled when the installation fails, is removed or overhauled.

[0051] In one embodiment, if Figure 1-2 and Figure 5-8 As shown, the elastic expansion component 200 is sleeved on the outer sleeve 100 .

[0052] With this design, during production, the outer sleeve 100 and the elastic expansion assembly 200 can be manufactured separately and then assembled.

[0053] In some embodiments, Figure 1 , Figure 5 and Figure 7 As shown, there are multiple through holes 101 , and the multiple through holes 101 are evenly distributed along the circumference of the outer sleeve 100 . The number of the expansion members 220 is the same as that of the through holes 101 , and the multiple expansion members 220 correspond to the multiple through holes 101 one by one.

[0054] It can be understood that one through hole 101 and one expansion member 220 constitute a group of expansion and fixing points. Providing multiple through holes 101 and expansion members 220 increases the number of expansion and fixing points, further improving the stability of the sleeve in the external hole.

[0055] Furthermore, by evenly distributing the plurality of through holes 101 along the circumference of the outer sleeve 100 , the sleeve is evenly stressed after being fixed and is not easily displaced or rotated in the outer hole.

[0056] In a specific embodiment, Figure 1 and Figure 5-8As shown, the elastic support member 210 includes a sleeve 211. The sleeve 211 is sleeved on the side wall of the outer sleeve 100. An installation hole 2111 corresponding to the through hole 101 is provided on the sleeve 211. At both ends of the installation hole 2111, the sleeve 211 is provided with a supporting portion 212 extending into the interior of the outer sleeve 100 through the through hole 101. The expansion member 220 includes a clamping block. The clamping block is inserted into the installation hole 2111 and is supported on the supporting portion 212. A limiting portion 213 is provided in the installation hole 2111, and the limiting portion 213 is used to prevent the clamping block from脱出 the installation hole 2111.

[0057] Specifically, as Figure 2-3 shown, the supporting portion 212 can be an L-shaped bracket fixed to the inner side of the sleeve 211. The two L-shaped brackets supporting the two ends of the clamping block can play a role in firmly supporting the clamping block. At the same time, in order to prevent the clamping block from脱出 the installation hole 2111, a limiting portion 213 is provided in the installation hole 2111. When the installation hole 2111 is produced, it can be designed in the shape of a "Lv" character, that is, an installation hole 2111 has two orifices, and the unconnected part between the two orifices acts as the limiting portion 213.

[0058] In a more specific embodiment, as Figure 1-3 and Figure 5-8 shown, the through hole 101 is a strip-shaped hole extending along the axial direction of the outer sleeve 100. The clamping block is a strip-shaped block. A V-shaped groove 221 is provided on the side of the strip-shaped block facing away from the outer sleeve 100. The limiting portion 213 is used to stop the bottom of the V-shaped groove 221.

[0059] By providing a V-shaped groove 221 on the side of the strip-shaped block facing away from the outer sleeve 100 (that is, when the outer sleeve 100 and the elastic expansion assembly 200 are inserted into the external hole together, the side of the clamping block facing the hole wall), the V-shaped groove 221 makes the side of the clamping block facing the hole wall of the external hole form teeth. When the inner sleeve 300 is inserted into the outer sleeve 100 and pushes the clamping block to abut against the hole wall of the external hole, the teeth bite into the hole wall, playing a better fixing role.

[0060] In some specific embodiments, as Figure 1-3 and Figure 5-8 shown, the elastic support member 210 is a sheet metal part, which is processed from a metal sheet with a thickness less than 0.5 mm.

[0061] Sheet metal is a comprehensive cold processing technology for metal sheets (usually less than 6 mm in thickness), including shearing, punching / cutting / combining, folding, welding, riveting, splicing, forming (such as automobile body), etc. Its remarkable feature is that the thickness of the same part is consistent.

[0062] Sheet metal parts have the characteristics of light weight, high strength, low cost, and good mass production performance.

[0063] The use of sheet metal as the elastic support member 210 is easy to manufacture and has low cost. At the same time, the sheet metal made of metal plates with a thickness of less than 0.5 mm is relatively thin, and being mounted on the outer sleeve 100 will hardly increase the thickness of the outer sleeve 100 at this point. Therefore, there is no need to open a larger external hole when drilling a hole in the wall. It is sufficient to ensure that the outer sleeve 100 and the elastic expansion assembly 200 can be inserted, thereby shortening the construction workload and reducing damage to the internal structure of the wall. Moreover, after the later construction is completed, only a small amount of filler is needed to backfill and seal the hole.

[0064] Specifically, if Figure 4 As shown, when manufacturing the elastic support member 210, first use a strip-shaped thin plate, cut a slit by laser as shown in the figure, and after preliminary shaping to form the supporting portion 212, it can be wound into a ring shape on the outer sleeve 100 (not shown in the figure).

[0065] In another embodiment, the elastic expansion assembly 200 is disposed in the through hole 101, a gap is provided between the expansion member 220 and the through hole 101, the elastic support member 210 is located in the gap, and one end of the elastic support member 210 is connected to the expansion member 220, and the other end is connected to the inner wall of the outer sleeve 100.

[0066] Specifically, the expansion member 220 may be an expansion block, and a latch is provided on the side facing the outside of the through hole 101, so that after the expansion block abuts against the inner wall of the external hole, the expansion block can bite into the hole wall through the latch to improve the fixing effect. The elastic support member 210 may be a spring or a leaf spring to connect the expansion block and to separate the expansion block from the hole wall when the inner sleeve 300 is removed from the outer sleeve 100.

[0067] The elastic expansion component 200 and the outer sleeve 100 can be a split assembly structure. Of course, the expansion component 220, the elastic support component 210 and the outer sleeve 100 can also be connected into a whole by welding.

[0068] In some embodiments, Figure 1-2 and Figure 5-8 As shown, the outer sleeve 100 and the inner sleeve 300 both have a front end and a rear end, and the front ends of the outer sleeve 100 and the inner sleeve 300 are both tapered.

[0069] It can be understood that the front end is the end that is inserted into the external hole when in use. By designing the front end of the outer sleeve 100 to be tapered, it is convenient for the outer sleeve 100 to be inserted into the external hole during use. By designing the front end of the inner sleeve 300 to be tapered, it is convenient for the inner sleeve 300 to be inserted into the outer sleeve 100 and the outer wall of the inner sleeve 300 to abut against the tightening piece 220 and push it to move outward.

[0070] Furthermore, the rear end of the outer sleeve 100 is provided with an internal thread 102 , and the rear end of the inner sleeve 300 is provided with an external thread 301 corresponding to the internal thread 102 .

[0071] By providing an internal thread 102 and an external thread 301 at the rear ends of the outer sleeve 100 and the inner sleeve 300, the inner sleeve 300 and the outer sleeve 100 are fixed by threads. Of course, in some other implementations, the inner and outer sleeves 100 can also be connected by conventional methods such as snap connection, interference connection, etc.

[0072] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0073] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A casing, characterized in that: include: An outer sleeve, wherein a side wall of the outer sleeve is provided with a through hole; an elastic expansion assembly, arranged on the outer sleeve, comprising an elastic support and an expansion member arranged on the elastic support, the expansion member corresponding to the through hole and partially extending into the interior of the outer sleeve through the through hole, and the elastic expansion assembly can be inserted into the external hole together with the outer sleeve; and An inner sleeve is detachably inserted into the inner part of the outer sleeve. When the inner sleeve is inserted into the inner part of the outer sleeve, the inner sleeve can push the expansion member so that the expansion member overcomes the elastic force of the elastic support member and moves outward to abut against the inner wall of the outer hole, so as to fix the outer sleeve in the outer hole; The elastic expansion component is sleeved on the outer sleeve; The elastic support member includes a sleeve, a mounting hole corresponding to the through hole is provided on the sleeve, supporting parts extending into the interior of the outer sleeve through the through hole are provided at both ends of the mounting hole, the expansion member includes a clamping block, the clamping block is installed in the mounting hole and supported on the supporting part, a limiting part is provided in the mounting hole, and the limiting part is used to prevent the clamping block from escaping from the mounting hole.

2. The sleeve according to claim 1, characterized in that There are a plurality of through holes, and the plurality of through holes are evenly distributed along the circumference of the outer sleeve. The number of the expansion members is the same as the number of the through holes, and the plurality of expansion members correspond to the plurality of through holes one by one.

3. The sleeve according to claim 1, characterized in that The through hole is a strip hole extending along the axial direction of the outer sleeve, the clamping block is a strip block, a V-shaped groove is provided on the side of the strip block away from the outer sleeve, and the limiting portion is used to stop the bottom of the V-shaped groove.

4. The sleeve according to claim 1 or 3, characterized in that: The elastic support member is a sheet metal member, which is made of a metal plate with a thickness of less than 0.5 mm.

5. The sleeve according to claim 1, characterized in that The size of the through hole is larger than the size of the expansion piece.

6. The sleeve according to claim 1, characterized in that The outer sleeve and the inner sleeve both have a front end and a rear end, and the front ends of the outer sleeve and the inner sleeve are both tapered.

7. The sleeve according to claim 6, characterized in that The rear end of the outer sleeve is provided with an internal thread, and the rear end of the inner sleeve is provided with an external thread corresponding to the internal thread.

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