Plastic plug-in type end plug of ball screw pair

Abstract

The utility model relates to the technical field of lead screw end plugs, and discloses a ball screw pair plastic plug-in type end plug which comprises a lead screw body, an end plug body is arranged at one end of the lead screw body, a threaded groove is formed in the inner wall of the end plug body, and an external thread is fixedly arranged on the outer wall of one end of the lead screw body. A locking structure is arranged at the upper end of the end plug body and comprises a fixing part fixedly arranged at the upper end of the end plug body, a first screw rod is arranged in the fixing part in a threaded mode, a locking hole is formed in the upper end of a lead screw body located at the lower end of the first screw rod, and a dustproof plate is fixedly arranged on one side of the outer wall of the end plug body. A sealing ring is fixedly arranged on one side of the dustproof plate, and a bearing seat is arranged on one side of the end plug body. According to the plastic plug-in type end plug of the ball screw pair disclosed by the utility model, the butt joint stability of the end plug and the screw body can be ensured.

Description

Technical Field

[0001] This utility model relates to the field of ball screw end plug technology, specifically a plastic plug-in type end plug for ball screw pairs. Background Technology

[0002] One of the most important functions of end plugs is to provide a seal. They are placed at both ends of the ball screw to prevent lubricating oil, grease, or other liquids from leaking out, while also preventing external contaminants such as dust, impurities, and moisture from entering the bearing housing at one end of the screw.

[0003] Existing end plugs can be connected to the end of the ball screw via internal and external threads. The end of the screw usually has external threads, and the end plug has internal threads. By tightening the threads, the end plug can be tightly sealed to the end of the screw. However, this method of fixing cannot guarantee a stable connection between one end of the end plug body and the bearing housing. Utility Model Content

[0004] The purpose of this invention is to provide a plastic plug-in type end plug for ball screw pairs to solve the problem that existing devices cannot guarantee a stable connection between one end of the end plug body and the bearing seat.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a plastic plug-in type end plug for a ball screw assembly, comprising a screw body, an end plug body at one end of the screw body, a threaded groove on the inner wall of the end plug body, an external thread fixedly provided on the outer wall of one end of the screw body, a locking structure at the upper end of the end plug body, the locking structure comprising a fixing member fixedly provided at the upper end of the end plug body, a first screw being provided on the internal thread of the fixing member, a locking hole being provided at the upper end of the screw body located at the lower end of the first screw, a dustproof plate fixedly provided on one side of the outer wall of the end plug body, a sealing ring fixedly provided on one side of the dustproof plate, and a bearing seat provided on one side of the end plug body.

[0006] Preferably, a rotating plate is fixedly provided on the outer wall of the end plug body, and the outer wall of the rotating plate is provided with a groove in annular shape.

[0007] Preferably, a limiting plate is fixedly provided on the outer wall of the end plug body located on one side of the dustproof plate.

[0008] Preferably, the upper end of the end plug body is fixedly provided with two mounting parts, and the upper end of the mounting part is fixedly provided with a second screw. The upper end of the second screw passes through the fixing part and a nut is provided on its outer wall.

[0009] Preferably, the side wall of the lead screw body that enters the threaded groove contacts the inner wall of one side of the end plug body.

[0010] Preferably, the upper end of the fastener has a hidden groove, and the upper part of the first screw is located inside the hidden groove.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1) By setting a locking structure, after one end of the end plug is threaded to the screw body, it enters the locking hole through the output end of the first screw, which can strengthen the connection between the screw body and the end plug body and prevent the screw body from separating from the end plug when the screw rotates.

[0013] 2) By setting a limiting plate, after the bearing housing is installed on the outer wall of the end plug by tapping, the limiting plate limits one end of the bearing housing, preventing the bearing housing from being damaged in contact and squeezing the sealing ring, which could cause the sealing ring to deform and be damaged. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of a plastic plug-in type end plug for a ball screw assembly in an embodiment of this utility model.

[0015] Figure 2 This is a schematic cross-sectional view of the end plug body in an embodiment of the present invention;

[0016] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0017] Figure 4 This is a partial cross-sectional view of the structure in an embodiment of the present utility model;

[0018] Figure 5 This is a schematic diagram of the rotating plate structure in an embodiment of the present invention;

[0019] Figure 6 for Figure 5 A magnified structural diagram at point B in the middle.

[0020] In the diagram: 1. Lead screw body; 2. End plug body; 3. Bearing seat; 4. External thread; 5. Thread groove; 6. Locking structure; 7. Fixing component; 8. First screw; 9. Locking hole; 10. Dustproof plate; 11. Sealing ring; 12. Limiting plate; 13. Rotating plate; 14. Mounting component; 15. Second screw. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1

[0023] Combination Figures 1-6 A ball screw assembly plastic plug type end plug includes a screw body 1, an end plug body 2 is provided at one end of the screw body 1, a threaded groove 5 is provided on the inner wall of the end plug body 2, an external thread 4 is fixedly provided on the outer wall of one end of the screw body 1, a locking structure 6 is provided at the upper end of the end plug body 2, the locking structure 6 includes a fixing member 7 fixedly provided at the upper end of the end plug body 2, a first screw 8 is provided on the internal thread of the fixing member 7, a locking hole 9 is provided at the upper end of the screw body 1 located at the lower end of the first screw 8, a dustproof plate 10 is fixedly provided on one side of the outer wall of the end plug body 2, a sealing ring 11 is fixedly provided on one side of the dustproof plate 10, and a bearing seat 3 is provided on one side of the end plug body 2.

[0024] See Figure 4 , Figure 5 and Figure 6 Furthermore, a rotating plate 13 is fixedly installed on the outer wall of the end plug body 2. The outer wall of the rotating plate 13 has a groove in the ring. Two mounting parts 14 are fixedly installed on the upper end of the end plug body 2. A second screw 15 is fixedly installed on the upper end of the mounting part 14. The upper end of the second screw 15 passes through the fixing part 7 and a nut is installed on the outer wall. The side wall of the screw body 1 that enters the thread groove 5 contacts the inner wall of one side of the end plug body 2. A hidden groove is opened on the upper end of the fixing part 7. The upper part of the first screw 8 is located inside the hidden groove.

[0025] Specifically, the rotating plate 13 facilitates the rotation of the end plug, thereby enabling a quick connection between the lead screw body 1 and the end plug body 2. The mounting part 14 is used to set the second screw 15. The second screw 15, in conjunction with the nut, enables the installation of the fixing part 7. The hidden groove facilitates the concealment of the upper end of the first screw 8.

[0026] Example 2

[0027] See Figure 4 Furthermore, based on Embodiment 1, a limiting plate 12 is fixedly installed on the outer wall of the end plug body 2 located on one side of the dustproof plate 10.

[0028] Specifically, when the bearing housing 3 and the end plug body 2 are engaged, the sealing ring 11 will not be damaged by compression at one end of the bearing housing 3.

[0029] In actual operation, the end plug body 2 is threadedly connected to one end of the lead screw body 1. After connection, the first screw 8 is used so that the first screw 8 enters the locking hole 9 inside the lead screw body 1 to strengthen the stable installation of the lead screw body 1 and the end plug body 2.

[0030] After installation, the bearing housing 3 is fitted onto the outer wall of the end plug body 2, so that the sealing ring 11 on one side of the dustproof plate 10 contacts the bearing housing 3, preventing dust from entering the bearing housing 3 and causing dust contamination. At the same time, the limiting plate 12 limits the position of the bearing housing 3, preventing the sealing ring 11 from being squeezed and damaged on one side of the bearing housing 3, so that the sealing ring 11 only needs to make slight contact with the bearing housing 3.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A plastic plug-in type end plug for a ball screw assembly, comprising a screw body (1), characterized in that: One end of the lead screw body (1) is provided with an end plug body (2), and the inner wall of the end plug body (2) is provided with a threaded groove (5). The outer wall of one end of the lead screw body (1) is fixedly provided with an external thread (4). The upper end of the end plug body (2) is provided with a locking structure (6). The locking structure (6) includes a fixing member (7) fixedly provided at the upper end of the end plug body (2). The internal thread of the fixing member (7) is provided with a first screw (8). The upper end of the lead screw body (1) located at the lower end of the first screw (8) is provided with a locking hole (9). A dustproof plate (10) is fixedly provided on one side of the outer wall of the end plug body (2). A sealing ring (11) is fixedly provided on one side of the dustproof plate (10). A bearing seat (3) is provided on one side of the end plug body (2).

2. The ball screw assembly plastic plug type end cap according to claim 1, characterized in that: A rotating plate (13) is fixedly provided on the outer wall of the end plug body (2), and a groove is provided on the outer wall of the rotating plate (13) in an annular shape.

3. The ball screw assembly plastic plug type end cap according to claim 1, characterized in that: A limit plate (12) is fixedly installed on the outer wall of the end plug body (2) located on one side of the dustproof plate (10).

4. The ball screw assembly plastic plug type end cap according to claim 1, characterized in that: The upper end of the end plug body (2) is fixedly provided with two mounting parts (14), and the upper end of the mounting part (14) is fixedly provided with a second screw (15). The upper end of the second screw (15) passes through the fixing part (7) and is provided with a nut on its outer wall.

5. The ball screw assembly plastic plug type end cap according to claim 1, characterized in that: The lead screw body (1) enters the thread groove (5) at one end of its side wall, which contacts the inner wall of one side of the end plug body (2).

6. The ball screw assembly plastic plug type end cap according to claim 1, characterized in that: The upper end of the fastener (7) is provided with a hidden groove, and the upper part of the first screw (8) is located inside the hidden groove.

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