Dustproof assembly of lead screw nut sleeve

Abstract

The utility model discloses a lead screw nut sleeve dustproof assembly which comprises a nut body and further comprises an installation ring arranged on the front side of the nut body, a positioning groove used for assisting in positioning installation of the installation ring is formed in the front end of the nut body, and the installation ring is provided with a dustproof assembly used for preventing dust after positioning installation. According to the dustproof assembly of the lead screw nut sleeve, when the lead screw nut is used, the installation ring is pushed towards the front end of the nut body in a positioning mode, in the pushing process, through transmission, the annular air bag expands and deforms, the inner wall of the annular air bag abuts against the outer side of a lead screw connected to the nut body, and dustproof sealing is conducted on the nut body; and in the dustproof sealing process, through the self-adaptability in the abutting and extruding process of the annular air bag and the outer side of the lead screw, the annular air bag can be fully abutted against the outer side of the lead screw for sealing, and the sealing and dustproof effect is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of screw rod nuts, and in particular relates to a screw rod nut sleeve dustproof component. Background Art

[0002] The lead screw nut is a mechanical component that realizes the conversion between rotational motion and linear motion through the cooperation of a threaded pair. When the lead screw nut is in use, it is protected from dust by a sealing ring. However, in the process of using a sealing ring for sealing protection, due to the setting of the spiral shape on the outer side of the lead screw, it is difficult for the sealing ring to fully offset the outer side of the lead screw, affecting the sealing and dustproofing effect.

[0003] In view of this, the present utility model is proposed. Utility Model Content

[0004] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is:

[0005] A screw nut sleeve dustproof assembly, comprising a nut body, and also comprising a mounting ring arranged at the front side of the nut body, wherein the front end of the nut body is provided with a positioning groove for assisting the mounting ring in positioning and installation, and the mounting ring is provided with a dustproof assembly for positioning and installing after dust prevention;

[0006] The dustproof component includes an annular mounting groove provided on the inner side of the mounting ring, an annular airbag is installed inside the annular mounting groove, an inflation component for inflating the inside of the annular airbag is provided on the mounting ring, a driving ring is rotatably connected to the front side of the mounting ring through a rotating component, and a limiting component for limiting the mounting ring after installation is provided on the outer side of the driving ring and the nut body.

[0007] As a preferred solution, two groups of the inflation components are symmetrically arranged on both sides of the mounting ring.

[0008] As a preferred solution, the inflation assembly includes a fixing plate fixed to the outside of the mounting ring, a piston cylinder fixed on the fixing plate, a piston plate slidably connected to the inside of the piston cylinder, a transmission rod slidably connected to the front end of the piston cylinder, one end of the transmission rod is fixed to the piston plate, an air pipe is connected between the piston cylinder and the annular airbag, and a spring is arranged inside the piston cylinder for elastically supporting the piston plate.

[0009] As a preferred solution, an escape groove for evading various components on the inflatable assembly is opened on the inner wall of the positioning groove.

[0010] As a preferred solution, the limit assembly includes a plurality of limit rods fixed to the rear side of the drive ring, a plurality of support plates are fixed to the outer side of the nut body, and a limit groove for the limit rod to rotate and engage is opened on one side of each of the support plates.

[0011] As a preferred embodiment, the rotating assembly includes an annular groove opened on one side of the driving ring, and an annular connecting plate is rotatably connected to the annular groove. One side of the annular connecting plate is fixed to the front side of the mounting ring, and the cross-section of the annular connecting plate and the annular groove is T-shaped.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The utility model discloses a screw nut sleeve dustproof component, when the screw nut is in use, the mounting ring is positioned and pushed toward the front end of the nut body, during the pushing process, the annular airbag is expanded and deformed through transmission so that the inner wall of the annular airbag abuts against the outer side of the screw connected to the nut body, thereby performing dust-proof sealing on the nut body, and during the dust-proof sealing process, the adaptability of the annular airbag in the process of abutting and squeezing against the outer side of the screw makes it easy to fully abut against the outer side of the screw for sealing, thereby ensuring the sealing and dust-proof effect.

[0014] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In the attached picture:

[0016] Figure 1 It is a schematic diagram of the overall appearance structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the nut structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the mounting ring and the driving ring of the utility model;

[0019] Figure 4 It is a schematic diagram of the structure of the dustproof component, the inflation component and the limit component of the utility model;

[0020] Figure 5 It is a schematic diagram of the structure of the rotating assembly of the utility model.

[0021] In the figure: 1-nut body; 2-mounting ring; 3-positioning groove; 401-annular mounting groove; 402-annular airbag; 501-fixing plate; 502-piston cylinder; 503-piston plate; 504-transmission rod; 505-air pipe; 6-spring; 7-avoidance groove; 8-driving ring; 901-limiting rod; 902-support plate; 903-limiting groove; 1001-annular slide groove; 1002-annular connecting plate. DETAILED DESCRIPTION

[0022] The following will provide a clear and complete description of the technical solutions in the present embodiment of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only preferred embodiments of the present invention.

[0023] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. 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 of the related listed items.

[0025] like Figures 1 to 5 As shown, a screw nut sleeve dustproof assembly includes a nut body 1, and also includes a mounting ring 2 arranged on the front side of the nut body 1. The front end of the nut body 1 is provided with a positioning groove 3 for assisting the mounting ring 2 in positioning and installing. The mounting ring 2 is provided with a dustproof assembly for positioning and preventing dust after installation;

[0026] The dustproof component includes an annular mounting groove 401 provided on the inner side of the mounting ring 2, an annular airbag 402 is installed inside the annular mounting groove 401, an inflating component for inflating the inside of the annular airbag 402 is provided on the mounting ring 2, a driving ring 8 is rotatably connected to the front side of the mounting ring 2 through a rotating component, and a limiting component for limiting the mounting ring 2 after installation is provided on the outer side of the driving ring 8 and the nut body 1;

[0027] When the screw nut is in use, the mounting ring 2 is positioned and pushed toward the front end of the nut body 1. During the pushing process, the annular airbag 402 is expanded and deformed through transmission, and the inner wall of the annular airbag 402 is abutted against the outer side of the screw connected to the nut body 1, thereby performing dust-proof sealing on the nut body 1. In the process of dust-proof sealing, the adaptability of the annular airbag 402 in the process of abutting and squeezing against the outer side of the screw makes it easy to fully abut against the outer side of the screw for sealing, thereby ensuring the sealing and dust-proof effect.

[0028] Two groups of inflation components are symmetrically arranged on both sides of the mounting ring 2; more effective and uniform inflation is facilitated by the two groups of symmetrically arranged inflation components.

[0029] The inflation component includes a fixing plate 501 fixed to the outer side of the mounting ring 2, a piston cylinder 502 is fixed on the fixing plate 501, a piston plate 503 is slidably connected inside the piston cylinder 502, a transmission rod 504 is slidably connected to the front end of the piston cylinder 502, one end of the transmission rod 504 is fixed to the piston plate 503, an air pipe 505 is connected between the piston cylinder 502 and the annular airbag 402, and a spring 6 for elastically supporting the piston plate 503 is arranged inside the piston cylinder 502; in the process of positioning and pushing the mounting ring 2 toward the front end of the nut body 1, the transmission rod 504 abuts against the inner wall of the avoidance groove 7, pushing the transmission rod 504 to move toward the inside of the piston cylinder 502, and in the process of movement, the piston plate 503 is pushed to move inside the piston cylinder 502, and in the process of movement of the piston plate 503, the gas inside the piston cylinder 502 is squeezed to transport part of the gas to the inside of the annular airbag 402 through the air pipe 505, and the inside of the annular airbag 402 is inflated.

[0030] An avoidance groove 7 for avoiding various components on the inflatable assembly is provided on the inner wall of the positioning groove 3; the avoidance groove 7 can prevent the inner wall of the positioning groove 3 from interfering with various components on the inflatable assembly.

[0031] The limiting assembly includes a plurality of limiting rods 901 fixed to the rear side of the driving ring 8, and a plurality of supporting plates 902 are fixed to the outer side of the nut body 1. A limiting groove 903 for the limiting rod 901 to rotate and snap into is opened on one side of each supporting plate 902. After the mounting ring 2 is positioned, pushed and inflated to seal, the driving ring 8 is rotated. During the rotation of the driving ring 8, the limiting rods 901 are driven to rotate. During the rotation of the limiting rods 901, the limiting rods 901 are respectively snapped into the limiting grooves 903 of each supporting plate 902 to limit the mounting ring 2 after the relative positioning.

[0032] The rotating component includes an annular groove 1001 opened on one side of the driving ring 8, and an annular connecting plate 1002 is rotatably connected to the annular groove 1001. One side of the annular connecting plate 1002 is fixed to the front side of the mounting ring 2, and the cross-sections of the annular connecting plate 1002 and the annular groove 1001 are T-shaped; through the annular groove 1001 and the annular connecting plate 1002, the driving ring 8 is conveniently rotatably connected to one side of the mounting ring 2.

[0033] When the screw nut is in use, the mounting ring 2 is pushed toward the front end of the nut body 1. During the pushing process, the nut body 1 is positioned through the positioning groove 3.

[0034] During the process of positioning and pushing the mounting ring 2 toward the front end of the nut body 1, the transmission rod 504 abuts against the inner wall of the avoidance groove 7, pushing the transmission rod 504 to move toward the inside of the piston cylinder 502. During the movement, the piston plate 503 is pushed to move inside the piston cylinder 502. During the movement of the piston plate 503, the gas inside the piston cylinder 502 is squeezed and part of the gas is transported to the inside of the annular airbag 402 through the air pipe 505, and the inside of the annular airbag 402 is inflated. Through the effect of inflation, the annular airbag 402 is expanded and deformed, and the inner wall of the annular airbag 402 is abutted against the outer side of the screw connected to the nut body 1, so that the nut body 1 is dust-sealed. In the process of dust-sealing, the adaptability of the annular airbag 402 in the process of abutting and squeezing the outer side of the screw makes it easy to fully abut against the outer side of the screw for sealing, thereby ensuring the sealing and dust-proofing effect.

[0035] After the mounting ring 2 is positioned, pushed and inflated to seal, the driving ring 8 is rotated. During the rotation of the driving ring 8, each limiting rod 901 is driven to rotate. During the rotation of the limiting rod 901, each limiting rod 901 is respectively inserted into the limiting groove 903 of each support plate 902, so as to limit the mounting ring 2 after the relative positioning, so as to facilitate the rapid installation and fixation of the auxiliary mounting ring 2.

[0036] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A screw nut sleeve dustproof assembly, comprising: The nut body (1) is characterized by further comprising: A mounting ring (2) is arranged on the front side of the nut body (1), a positioning groove (3) for assisting the mounting ring (2) in positioning and installing is provided at the front end of the nut body (1), and a dustproof component for preventing dust after positioning and installing is provided on the mounting ring (2); The dustproof component comprises an annular mounting groove (401) formed on the inner side of the mounting ring (2); an annular airbag (402) is mounted inside the annular mounting groove (401); an inflation component for inflating the inside of the annular airbag (402) is arranged on the mounting ring (2); a driving ring (8) is rotatably connected to the front side of the mounting ring (2) via a rotating component; a limiting component for limiting the position of the mounting ring (2) after installation is arranged on the outer side of the driving ring (8) and the nut body (1).

2. A screw nut sleeve dustproof assembly according to claim 1, characterized in that: Two groups of the inflation components are symmetrically arranged on both sides of the mounting ring (2).

3. A screw nut sleeve dustproof assembly according to claim 2, characterized in that: The inflation assembly comprises a fixing plate (501) fixed to the outside of the mounting ring (2), a piston cylinder (502) being fixed on the fixing plate (501), the interior of the piston cylinder (502) being slidably connected to a piston plate (503), a front end of the piston cylinder (502) being slidably connected to a transmission rod (504), one end of the transmission rod (504) being fixed to the piston plate (503), an air pipe (505) being connected between the piston cylinder (502) and the annular airbag (402), and a spring (6) for elastically supporting the piston plate (503) being arranged inside the piston cylinder (502).

4. A screw nut sleeve dustproof assembly according to claim 3, characterized in that: An escape groove (7) for evading various components on the inflatable assembly is provided on the inner wall of the positioning groove (3).

5. The screw nut sleeve dustproof assembly according to claim 1, characterized in that: The limiting assembly comprises a plurality of limiting rods (901) fixed to the rear side of the driving ring (8); a plurality of supporting plates (902) are fixed to the outer side of the nut body (1); and a limiting groove (903) for the limiting rod (901) to be rotated and engaged is formed on one side of each supporting plate (902).

6. A screw nut sleeve dustproof assembly according to claim 5, characterized in that: The rotating assembly comprises an annular slide groove (1001) provided on one side of the driving ring (8), an annular connecting plate (1002) being rotatably connected to the annular slide groove (1001), one side of the annular connecting plate (1002) being fixed to the front side of the mounting ring (2), and the cross-sections of the annular connecting plate (1002) and the annular slide groove (1001) being arranged in a T-shape.

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