case

Abstract

This disclosure provides a housing, belonging to the field of mechanical technology. The housing includes an outer cylinder, an inner cylinder, and a connecting assembly. The outer cylinder has a first annular groove and a through hole. The first annular groove extends circumferentially along the inner circumferential wall of the outer cylinder, and the through hole is located within the first annular groove. The inner cylinder has a second annular groove extending circumferentially along the outer circumferential wall of the inner cylinder. The inner cylinder is inserted into the outer cylinder, and the first annular groove and the second annular groove are opposite to each other to form an accommodating space. A portion of the connecting assembly is inserted into the through hole, and another portion is inserted into the accommodating space, and the connecting assembly is connected to the inner cylinder. This disclosure can solve the problem of housing deformation during assembly.

Description

Technical Field

[0001] This disclosure belongs to the field of mechanical technology, and in particular relates to a housing. Background Technology

[0002] The housing is an important component of mechanical equipment, serving to support and protect the various parts within the equipment.

[0003] In related technologies, there is a shell consisting of an outer cylinder and an inner cylinder, with the inner cylinder inserted into the outer cylinder and connected together by welding.

[0004] However, during the welding of the outer and inner cylinders, the shell is prone to deformation due to high temperatures, making it unable to meet the assembly requirements of the mechanical equipment. Summary of the Invention

[0005] This disclosure provides a housing that solves the problem of housing deformation during assembly. The technical solution is as follows:

[0006] This disclosure provides a housing, including:

[0007] The outer cylinder has a first annular groove and a through hole, the first annular groove extending circumferentially along the inner peripheral wall of the outer cylinder, and the through hole located within the first annular groove;

[0008] The inner cylinder has a second annular groove that extends circumferentially along the outer peripheral wall of the inner cylinder. The inner cylinder is inserted into the outer cylinder, and the first annular groove and the second annular groove are opposite to each other to form an accommodating space.

[0009] The connecting component is partially inserted into the perforation and partially inserted into the accommodating space, and the connecting component is connected to the inner cylinder.

[0010] In one implementation of this disclosure, the connection component includes a plug plate and a cover;

[0011] The insert plate includes a first plate and a second plate connected together, the first plate being inserted into the accommodating space and the second plate being inserted into the through hole.

[0012] The cap passes through the perforation and is inserted into the accommodating space. The cap is connected to the inner cylinder, and the side of the cap facing the inner cylinder abuts against the second plate.

[0013] In one implementation of this disclosure, the first plate is a wedge-shaped structure;

[0014] The root end of the first plate is connected to the second plate. The two opposite sides of the first plate are an inclined surface and a flat surface, respectively. The inclined surface of the first plate abuts against one side of the first annular groove and the second annular groove, and the flat surface of the first plate abuts against the other side of the first annular groove and the second annular groove.

[0015] In one implementation of this disclosure, the connecting component includes two of the aforementioned inserts;

[0016] The two inserts are located on opposite sides of the cover, and the inclined surfaces of the first plates of the two inserts face opposite directions.

[0017] In one implementation of this disclosure, the connecting component further includes a first pad and a second pad;

[0018] The first pad and the second pad are located on both sides of the insert plate, respectively.

[0019] In one implementation of this disclosure, the cover includes a plug-in portion and a cover portion;

[0020] The insertion part is connected to the capping part, and the insertion part is also connected to the inner cylinder;

[0021] The cap is located inside the perforation and covers the perforation.

[0022] In one implementation of this disclosure, a portion of the cover protrudes from the insertion portion;

[0023] The second plate is located at the angle between the plug-in portion and the cover portion, and the second plate abuts against the plug-in portion and the cover portion respectively.

[0024] In one implementation of this disclosure, the cover further includes bolts;

[0025] The bolt passes through the cover and the insertion part in sequence and is connected to the inner cylinder.

[0026] In one implementation of this disclosure, the outer peripheral wall of the inner cylinder has an outer flange;

[0027] The outer flange is spaced apart from the second annular groove, and one end face of the outer flange abuts against one end face of the outer cylinder.

[0028] In one implementation of this disclosure, the outer cylinder has two perforations, which are arranged symmetrically.

[0029] The housing includes two connecting components, each corresponding to one of the two through holes. A portion of each connecting component is inserted into the corresponding through hole, and the other portion of each connecting component is inserted into the accommodating space.

[0030] The beneficial effects of the technical solutions provided in this disclosure include at least the following:

[0031] During the assembly of the shell, firstly, the inner cylinder is inserted into the outer cylinder, aligning the first and second annular grooves to form a receiving space. Next, the connecting assembly is inserted through the perforation, with one part of the assembly inserted into the perforation and the other part inserted into the receiving space. Finally, the connecting assembly is connected to the inner cylinder. In this way, the assembly between the inner and outer cylinders is achieved using the connecting assembly.

[0032] Because the housing is assembled mechanically without the need for welding, it will not deform and can well meet the assembly requirements of the housing in mechanical equipment. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the structure of the housing provided in an embodiment of this disclosure;

[0035] Figure 2 This is a schematic diagram of the outer cylinder provided in an embodiment of this disclosure;

[0036] Figure 3 This is a schematic diagram of the inner cylinder structure provided in an embodiment of this disclosure;

[0037] Figure 4 This is an assembly diagram of the connection components provided in an embodiment of this disclosure;

[0038] Figure 5 This is an assembly diagram of the connection components provided in an embodiment of this disclosure;

[0039] Figure 6 This is a schematic diagram of the structure of the connection component provided in an embodiment of this disclosure;

[0040] Figure 7 This is a flowchart of the processing method provided in the embodiments of this disclosure;

[0041] Figure 8This is a schematic diagram of the processing procedure provided in the embodiments of this disclosure.

[0042] The symbols in the diagram represent the following meanings:

[0043] 10. Outer cylinder;

[0044] 110. First annular groove; 120. Perforation;

[0045] 20. Inner cylinder;

[0046] 210. Second annular groove; 220. Outer flange; 230. Positioning groove;

[0047] 30. Connecting components;

[0048] 310. Insert plate; 311. First plate; 312. Second plate; 320. Cover; 321. Insertion part; 322. Cover part; 323. Bolt; 330. First pad; 340. Second pad;

[0049] A. Storage space. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this disclosure will be described in further detail below with reference to the accompanying drawings.

[0051] The housing is an important component of mechanical equipment, serving to support and protect the various parts within the equipment.

[0052] In related technologies, there is a shell consisting of an outer cylinder and an inner cylinder, with the inner cylinder inserted into the outer cylinder and connected together by welding.

[0053] However, during the welding of the outer and inner cylinders, the shell is prone to deformation due to high temperatures, making it unable to meet the assembly requirements of the mechanical equipment.

[0054] To address the aforementioned technical problems, this disclosure provides a housing. Figure 1 See the schematic diagram of the shell structure. Figure 1 The housing includes an outer cylinder 10, an inner cylinder 20, and a connecting assembly 30.

[0055] Figure 2 This is a structural schematic diagram of the outer cylinder 10, combined with... Figure 2 In this embodiment, the outer cylinder 10 has a first annular groove 110 and a perforation 120. The first annular groove 110 extends circumferentially along the inner peripheral wall of the outer cylinder 10, and the perforation 120 is located in the first annular groove 110.

[0056] Figure 3 This is a structural schematic diagram of the inner cylinder 20, combined with... Figure 3In this embodiment, the inner cylinder 20 has a second annular groove 210, which extends circumferentially along the outer peripheral wall of the inner cylinder 20. The inner cylinder 20 is inserted into the outer cylinder 10, and the first annular groove 110 is opposite to the second annular groove 210 to form an accommodating space A.

[0057] Figure 4 and Figure 5 This is an assembly diagram of the connecting component 30, combined with... Figure 4 and Figure 5 In this embodiment, a portion of the connecting component 30 is inserted into the perforation 120, and another portion of the connecting component 30 is inserted into the accommodating space A. The connecting component 30 is also connected to the inner cylinder 20.

[0058] During the assembly of the shell, firstly, the inner cylinder 20 is inserted into the outer cylinder 10, so that the first annular groove 110 and the second annular groove 210 are aligned, thereby forming the accommodating space A. Next, the connecting assembly 30 is inserted through the through hole 120, such that a portion of the connecting assembly 30 is inserted into the through hole 120 and the other portion is inserted into the accommodating space A. Finally, the connecting assembly 30 is connected to the inner cylinder 20. In this way, the assembly between the inner cylinder 20 and the outer cylinder 10 is achieved using the connecting assembly 30.

[0059] Because the housing is assembled mechanically without the need for welding, it will not deform and can well meet the assembly requirements of the housing in mechanical equipment.

[0060] As mentioned above, the connecting assembly 30 can assemble the outer cylinder 10 and the inner cylinder 20 together, and is a key component for realizing the assembly of the shell. The connecting assembly 30 will be described below.

[0061] See Figure 4 In this embodiment, the connecting component 30 includes a plug plate 310 and a cover 320.

[0062] The insert plate 310 includes a first plate 311 and a second plate 312 connected together. The first plate 311 is inserted into the accommodating space A, and the second plate 312 is inserted into the through hole 120. The cover 320 passes through the through hole 120 and is inserted into the accommodating space A. The cover 320 is connected to the inner cylinder 20, and the side of the cover 320 facing the inner cylinder 20 abuts against the second plate 312.

[0063] In the above implementation, the insert plate 310 consists of a first plate 311 and a second plate 312. The first plate 311 is inserted into the accommodating space A, that is, simultaneously inserted into the first annular groove 110 and the second annular groove 210, thereby limiting the axial movement between the outer cylinder 10 and the inner cylinder 20. The second plate 312 is inserted into the through hole 120, thereby effectively increasing the contact area between the insert plate 310 and the outer cylinder 10, which helps to improve the reliability of the axial limiting effect of the insert plate 310 on the outer cylinder 10 and the inner cylinder 20. The cover 320 penetrates the through hole 120 and is inserted into the accommodating space A, that is, simultaneously inserted into the through hole 120 and the accommodating space A, thereby further limiting the axial movement between the outer cylinder 10 and the inner cylinder 20. Furthermore, since the cover 320 is connected to the inner cylinder 20, the cover 320 can also limit the rotation between the outer cylinder 10 and the inner cylinder 20.

[0064] For example, the accommodating space A is an annular groove, and the accommodating space A is coaxially arranged with the outer cylinder 10 and the inner cylinder 20. The first plate 311 is an arc-shaped structural component, that is, it extends circumferentially along the accommodating space A. In this way, the volume of the first plate 311 within the accommodating space A can be effectively increased, thereby improving the reliability of the insert plate 310 in axially limiting the outer cylinder 10 and the inner cylinder 20.

[0065] For example, the first plate 311 and the second plate 312 of the insert plate 310 are integral structural components. This effectively improves the structural strength of the insert plate 310 and also effectively improves the manufacturing efficiency of the insert plate 310, thereby reducing manufacturing costs.

[0066] Figure 6 This is a structural diagram of the connecting components, combined with Figure 6 In this embodiment, the first plate 311 is a wedge-shaped structure, and the root end of the first plate 311 is connected to the second plate 312. The two opposite sides of the first plate 311 are an inclined surface and a plane, respectively. The inclined surface of the first plate 311 abuts against one side of the first annular groove 110 and the second annular groove 210, and the plane of the first plate 311 abuts against the other side of the first annular groove 110 and the second annular groove 210.

[0067] It should be noted that one end of the first plate 311 is the root end, which refers to the larger end of the wedge structure, and the other end of the first plate 311 is the tip, which refers to the smaller end of the wedge structure.

[0068] In the above implementation, the first plate 311 is designed as a wedge-shaped structure, so that when the insert plate 310 has a tendency to rotate circumferentially, the wedge-shaped first plate 311 can play a self-locking role, thereby restricting the circumferential rotation of the insert plate 310.

[0069] In this embodiment, the connecting component 30 includes two insert plates 310, which are located on both sides of the cover 320, and the inclined surfaces of the first plate body 311 of the two insert plates 310 face opposite directions.

[0070] The insertion plates 310 are respectively provided on both sides of the cover 320, which can effectively improve the reliability of the connection assembly 30 in limiting the outer cylinder 10 and the inner cylinder 20, thereby improving the reliability of the shell. Furthermore, since the inclined surfaces of the first plates 311 of the two insertion plates 310 face opposite directions, self-locking can be achieved regardless of whether the insertion plates 310 have a clockwise or counterclockwise circumferential movement trend.

[0071] See you again Figure 4 In this embodiment, the outer peripheral wall of the inner cylinder 20 has an outer flange 220. The outer flange 220 is spaced apart from the second annular groove 210, and one end face of the outer flange 220 abuts against one end face of the outer cylinder 10. The inclined surface of the first plate 311 faces away from the outer flange 220.

[0072] In the above implementation, the outer flange 220 protrudes from the outer peripheral wall of the inner cylinder 20. The outer flange 220 includes an outer peripheral wall and two end faces. The outer peripheral wall of the outer flange 220 is the side that protrudes from the outer peripheral wall of the inner cylinder 20, and the end faces of the outer flange 220 are the side facing the end of the inner cylinder 20. Since one end face of the outer flange 220 abuts against one end face of the outer cylinder 10, the axial movement of the outer cylinder 10 in the direction toward the outer flange 220 can be restricted by the outer flange 220.

[0073] For example, the outer peripheral wall of the outer cylinder 10 is flush with the outer peripheral wall of the outer flange 220. In this way, the outer flange 220 can be axially limited on the outer cylinder 10, and the outer flange 220 can be prevented from affecting the assembly of other arrangements of the mechanical equipment.

[0074] See you again Figure 5 In this embodiment, the connecting assembly 30 further includes a first pad 330 and a second pad 340. The first pad 330 and the second pad 340 are located on both sides of the insert plate 310, respectively.

[0075] A first pad 330 and a second pad 340 are respectively provided on both sides of the insert plate 310, which can effectively support the insert plate 310, thereby improving the structural strength of the connecting assembly 30 and preventing damage due to excessive load. Furthermore, because the insert plate 310 has the first pad 330 and the second pad 340 on both sides, the insert plate 310 does not directly contact the side of the first annular groove 110 and the side of the second annular groove 210. This prevents the insert plate 310 from getting stuck in the accommodating space A due to uneven force.

[0076] For example, the first pad 330 is located on one side of the insert plate 310. One side of the first pad 330 is in contact with the inclined surface of the first plate 311, so one side of the first pad 330 also has an inclined surface that matches the inclined surface of the first plate 311. The other side of the first pad 330 is a plane that is in contact with the side of the first annular groove 110 and the side of the second annular groove 210. That is, one side of the first pad 330 is an inclined surface, and the other side is a plane. The second pad 340 is located on the other side of the insert plate 310. One side of the second pad 340 is in contact with the plane of the first plate 311, and the other side of the second pad 340 is in contact with the side of the first annular groove 110 and the side of the second annular groove 210. That is, both sides of the second pad 340 are planes.

[0077] In this embodiment, the shapes of the first pad 330 and the second pad 340 are similar to those of the insert plate 310. That is, the first pad 330 and the second pad 340 are partially inserted into the accommodating space A and partially inserted into the through hole 120, thereby providing effective protection for the insert plate 310 as much as possible and improving the structural strength of the connecting assembly 30.

[0078] See also Figure 5 In this embodiment, the cover 320 includes a plug-in portion 321 and a cover portion 322. The plug-in portion 321 is connected to the cover portion 322 and is also connected to the inner cylinder 20. The cover portion 322 is located inside the perforation 120 and covers the perforation 120.

[0079] In the above implementation, the insertion part 321 sequentially penetrates the through hole 120 and the accommodating space A, and is connected to the inner cylinder 20. Since the insertion part 321 is simultaneously inserted into the through hole 120 and the accommodating space A, and is connected to the inner cylinder 20, it can effectively restrict the relative axial movement between the outer cylinder 10 and the inner cylinder 20. The sealing part 322 is located inside the through hole 120. Since the sealing part 322 is connected to the insertion part 321, the sealing part 322 can also restrict the relative displacement between the outer cylinder 10 and the inner cylinder 20. In addition, since the sealing part 322 covers the through hole 120, the insert plate 310, the first pad 330 and the second pad 340 can be encapsulated in the through hole 120 and the accommodating space A, preventing the insert plate 310, the first pad 330 and the second pad 340 from coming out.

[0080] For example, the insertion part 321 and the cover part 322 are integral structural components. In this way, not only is the structural strength of the cover 320 improved, but the manufacturing efficiency of the cover 320 is also improved, and the manufacturing cost is reduced.

[0081] It should be noted that when the connecting assembly 30 includes two insert plates 310, the connecting assembly 30 includes two pairs of first pads 330 and second pads 340, with each pair of first pads 330 and second pads 340 corresponding to one insert plate 310. This design can further improve the reliability of the connecting assembly 30.

[0082] In this embodiment, the cover 320 also includes a bolt 323, which passes through the cover portion 322 and the insertion portion 321 in sequence and is connected to the inner cylinder 20.

[0083] The cap 322 can be detachably connected to the inner cylinder 20 via bolts 323. Furthermore, since bolted connections, compared to welding, do not cause high-temperature deformation of the shell, this facilitates the assembly of the shell in mechanical equipment.

[0084] For example, the bottom of the second annular groove 210 has a screw hole, and the bolt 323 passes through the cover part 322 and the insertion part 321 at one time and is inserted into the screw hole, thereby realizing the connection between the cover 320 and the inner cylinder 20.

[0085] In this embodiment, a portion of the cover portion 322 protrudes from the insertion portion 321, and the second plate 312 is located at the angle between the insertion portion 321 and the cover portion 322. The second plate 312 abuts against the insertion portion 321 and the cover portion 322 respectively.

[0086] In the above implementation, the included angle between the cover portion 322 and the insertion portion 321 provides a certain installation space for the second plate 312. Since the second plate 312 abuts against the insertion portion 321 and the cover portion 322 respectively, the insertion portion 321 enables the second plate 312 to move in the circumferential direction of the housing, and the cover portion 322 enables the second plate 312 to move in the radial direction.

[0087] Furthermore, when the connecting assembly 30 includes two insert plates 310, both ends of the cover portion 322 protrude from the insertion portion 321, creating two included angles between the cover portion 322 and the insertion portion 321, with each included angle corresponding to one insert plate 310. This design allows one cover 320 to encapsulate both insert plates 310, simplifying the structure of the connecting assembly 30 and effectively reducing the manufacturing cost of the housing.

[0088] In this embodiment, the outer cylinder 10 has two through holes 120, which are arranged symmetrically. The housing includes two connecting components 30, which correspond one-to-one with the two through holes 120. A portion of each connecting component 30 is inserted into the corresponding through hole 120, and the other portion of each connecting component 30 is inserted into the accommodating space A.

[0089] In the above implementation, by increasing the number of connecting components 30 and arranging the connecting components 30 symmetrically, the assembly strength between the outer cylinder 10 and the inner cylinder 20 can be effectively improved.

[0090] The connecting component 30 has been introduced above. The outer cylinder 10 and the inner cylinder 20 will be introduced below.

[0091] Since the accommodating space A is composed of the first annular groove 110 and the second annular groove 210, after the outer cylinder 10 and the inner cylinder 20 are inserted together, it is necessary to ensure that the first annular groove 110 and the second annular groove 210 are arranged exactly opposite each other. This requires ensuring the machining accuracy of the first annular groove 110 and the second annular groove 210. To meet this requirement, this embodiment provides a method for machining the shell, mainly used for machining the outer cylinder 10 and the inner cylinder 20. Figure 7 This is a flowchart of the processing method, combined with... Figure 7 The processing method includes:

[0092] Step 701: Provide an outer cylinder 10 and an inner cylinder 20.

[0093] In the above implementation, the first annular groove 110 and the perforation 120 have not yet been machined on the outer cylinder 10, and the second annular groove 210 has not yet been machined on the inner cylinder 20.

[0094] Step 702: Insert the inner cylinder 20 into the outer cylinder 10 so that the outer cylinder 10 and the inner cylinder 20 are properly assembled.

[0095] In the above implementation, the assembly of the outer cylinder 10 and the inner cylinder 20 means that the outer cylinder 10 and the inner cylinder 20 are assembled in the axial direction.

[0096] Step 703: A perforation 120 is machined on the outer cylinder 10, and a positioning groove 230 is simultaneously machined on the outer peripheral wall of the inner cylinder 20 (see...). Figure 8 ).

[0097] In step 703, since the perforation 120 and the positioning groove 230 are processed together, it can be ensured that they have the same reference and are accurately aligned.

[0098] Step 704: Using the perforation 120 as a reference, process the first annular groove 110 on the inner peripheral wall of the outer cylinder 10, and using the positioning groove 230 as a reference, process the second annular groove 210 on the outer peripheral wall of the inner cylinder 20.

[0099] In the above implementation, since the reference points for the perforation 120 and the positioning hole are the same, the reference points for the first annular groove 110 and the second annular groove 210 are also the same. In this way, it can be ensured that after the outer cylinder 10 and the inner cylinder 20 are assembled in place, the first annular groove 110 and the second annular groove 210 can be arranged opposite each other to form the accommodating space A.

[0100] Before step 704, calibrate the outer cylinder 10 to ensure that the tool joint between the machined and unmachined areas of the outer cylinder 10 is within 0.02mm. Then calibrate the inner cylinder 20 to ensure that the tool joint between the machined and unmachined areas of the inner cylinder 20 is within 0.02mm.

[0101] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” “third,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an” or “a” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “comprising” or “including” and similar terms mean that the element or object preceding “comprising” or “including” encompasses the element or object listed following “comprising” or “including” and its equivalents, and do not exclude other elements or objects. The terms “connected” or “linked” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” “right,” etc., are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0102] The above description is merely an optional embodiment of this disclosure and is not intended to limit this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the protection scope of this disclosure.

Claims

1. A housing, characterized in that, include: The outer cylinder (10) has a first annular groove (110) and a perforation (120), the first annular groove (110) extending circumferentially along the inner peripheral wall of the outer cylinder (10), and the perforation (120) located within the first annular groove (110); The inner cylinder (20) has a second annular groove (210) that extends circumferentially along the outer peripheral wall of the inner cylinder (20). The inner cylinder (20) is inserted into the outer cylinder (10), and the first annular groove (110) is opposite to the second annular groove (210) to form an accommodating space (A). The connecting assembly (30) includes an insert plate (310) and a cover (320). The insert plate (310) includes a first plate (311) and a second plate (312) connected together. The first plate (311) is inserted into the accommodating space (A), and the second plate (312) is inserted into the perforation (120). The cover (320) passes through the perforation (120) and is inserted into the accommodating space (A). The cover (320) is connected to the inner cylinder (20), and the side of the cover (320) facing the inner cylinder (20) abuts against the second plate (312).

2. The housing according to claim 1, characterized in that, The first plate (311) has a wedge-shaped structure; The root end of the first plate (311) is connected to the second plate (312). The two opposite sides of the first plate (311) are an inclined surface and a flat surface, respectively. The inclined surface of the first plate (311) abuts against one side of the first annular groove (110) and the second annular groove (210), and the flat surface of the first plate (311) abuts against the other side of the first annular groove (110) and the second annular groove (210).

3. The housing according to claim 2, characterized in that, The connection assembly (30) includes two of the insert plates (310); The two insert plates (310) are located on both sides of the cover (320), and the inclined surfaces of the first plate body (311) of the two insert plates (310) face opposite directions.

4. The housing according to claim 1, characterized in that, The connecting assembly (30) further includes a first pad (330) and a second pad (340); The first pad (330) and the second pad (340) are located on both sides of the insert plate (310).

5. The housing according to claim 1, characterized in that, The cover (320) includes a plug-in portion (321) and a cover portion (322). The insertion part (321) is connected to the cover part (322), and the insertion part (321) is connected to the inner cylinder (20); The cover (322) is located inside the perforation (120) and covers the perforation (120).

6. The housing according to claim 5, characterized in that, A portion of the cover (322) protrudes from the plug (321). The second plate (312) is located at the angle between the plug-in portion (321) and the cover portion (322), and the second plate (312) abuts against the plug-in portion (321) and the cover portion (322) respectively.

7. The housing according to claim 5, characterized in that, The cover (320) also includes bolts (323); The bolt (323) passes through the cover (322) and the plug (321) in sequence and is connected to the inner cylinder (20).

8. The housing according to any one of claims 1-7, characterized in that, The outer peripheral wall of the inner cylinder (20) has an outer flange (220); The outer flange (220) is spaced apart from the second annular groove (210), and one end face of the outer flange (220) abuts against one end face of the outer cylinder (10).

9. The housing according to any one of claims 1-7, characterized in that, The outer cylinder (10) has two perforations (120), which are arranged symmetrically. The housing includes two connecting components (30), each of which corresponds to one of the two perforations (120). A portion of each connecting component (30) is inserted into the corresponding perforation (120), and the other portion of each connecting component (30) is inserted into the accommodating space (A).

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