Spindle nut assembly

Abstract

The utility model provides a spindle nut assembly, and belongs to the technical field of automobile accessories. The problem that an existing spindle nut assembly is short in service life is solved. The spindle nut assembly comprises a connecting rod, a limiting baffle is welded to the right side of the connecting rod, a spindle screw is welded to the right side of the limiting baffle, the surface of the spindle screw is sleeved with an installation sleeve in a threaded mode, a nut body is welded to the right side of the installation sleeve, and a left stop and a right stop are welded to the opposite sides of the limiting baffle and the installation sleeve respectively. A lubricating groove is formed in the left side of the mounting sleeve, and an oil storage sponge strip is placed in an inner cavity of the lubricating groove. The utility model has the functions of limiting and stopping, improves the assembly precision and the use stability, and has long service life.

Description

Technical Field

[0001] This utility model belongs to the field of automotive parts technology, and specifically relates to a spindle nut assembly. Background Technology

[0002] In automotive parts, a spindle and nut assembly refers to a unit that combines components such as a spindle and a nut to form a complete unit with a specific function.

[0003] For example, Chinese patent literature discloses a spindle nut with strong wear resistance [Application No.: 202022552726.X; Authorization Announcement No.: CN213929108U], which includes a spindle nut body, the spindle nut body includes a base layer, a high temperature resistant layer is fixedly connected to the top of the base layer, a wear-resistant layer is fixedly connected to the top of the high temperature resistant layer, an anti-corrosion layer is fixedly connected to the top of the wear-resistant layer, a reinforcing layer is fixedly connected to the bottom of the base layer, and the surface of the spindle nut body has six grooves. The base layer is made of austenitic stainless steel, the type of austenitic stainless steel is 309, and the high temperature resistant layer is an inorganic silicon high temperature resistant paint coating.

[0004] The aforementioned wear-resistant spindle nut has the advantage of high wear resistance, but it does not have a limit stop structure, so it cannot effectively limit movement during use. This results in poor assembly accuracy and operational stability. Furthermore, it cannot achieve efficient and stable braking force output during linear motion, and it cannot lubricate the threads during linear motion. Such prolonged use can easily lead to thread wear and affect service life. Summary of the Invention

[0005] The purpose of this utility model is to address the aforementioned problems in the existing technology by providing a spindle nut assembly with a limit stop function, which improves assembly accuracy and operational stability, facilitates thread lubrication, makes linear motion smoother, and effectively extends service life.

[0006] The objective of this utility model can be achieved through the following technical solution: a spindle nut assembly, including a connecting rod, a limit baffle welded to the right side of the connecting rod, a spindle screw welded to the right side of the limit baffle, an installation sleeve threaded onto the surface of the spindle screw, a nut body welded to the right side of the installation sleeve, a left stop and a right stop welded to opposite sides of the limit baffle and the installation sleeve, a lubrication groove provided on the left side of the installation sleeve, and an oil-storing sponge strip placed in the inner cavity of the lubrication groove.

[0007] This spindle nut assembly mainly consists of a right stop, a left stop, a mounting sleeve, a spindle screw, a nut body, an oil drain opening, and a lubrication groove. These components provide a limit stop function, improving assembly accuracy and operational stability, facilitating thread lubrication, ensuring smoother linear motion, and effectively extending service life.

[0008] In the aforementioned spindle nut assembly, the lubrication groove includes a storage groove. A placement slot is provided on the left side of the storage groove, and an oil filling hole is provided at the top of the inner cavity of the storage groove. In practical applications, the storage groove facilitates the placement of an oil-absorbing sponge strip. The sponge strip absorbs and stores lubricating grease. During the movement of the installation sleeve, the lubricating oil can seep into the surface of the spindle screw through the oil drain opening to lubricate it, thus ensuring lubrication between the threads and effectively extending service life.

[0009] In the aforementioned spindle nut assembly, a plug is inserted into the top of the inner cavity of the oil filling hole, and a plug cover is inserted into the left side of the storage slot. In practical applications, by setting the plug, the oil filling hole can be easily sealed to prevent lubricating oil from flowing out, and by setting the plug cover, the opening of the storage slot can be easily sealed.

[0010] In the aforementioned spindle nut assembly, an oil drain opening is provided at the bottom of the lubrication groove cavity, and a transmission groove is provided on the left side of the connecting rod. In practical applications, the transmission groove facilitates the installation and connection of the connecting rod and the transmission shaft.

[0011] In the aforementioned spindle nut assembly, there are three lubrication grooves arranged at equal intervals, and the connecting rod and the limiting baffle are integrally formed.

[0012] In the aforementioned spindle nut assembly, a fixing baffle is welded to the outer surface between the mounting sleeve and the nut body. The mounting sleeve, fixing baffle, and nut body are integrally formed. In practical applications, the fixing baffle facilitates connection and positioning with external structures.

[0013] Compared with existing technologies, the advantages of this spindle nut assembly are: it has a limit stop function during operation, which improves assembly accuracy and stability, facilitates thread lubrication, makes linear motion smoother, and effectively extends service life. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the spindle nut assembly.

[0015] Figure 2 This is the front sectional view of the spindle nut assembly.

[0016] Figure 3 This is a left-side axonometric view of the mounting sleeve of the spindle nut assembly.

[0017] Figure 4 This is a cross-sectional axonometric view of the mounting sleeve of the spindle nut assembly.

[0018] In the diagram: 1. Connecting rod; 2. Limiting baffle; 3. Right stop; 4. Left stop; 5. Mounting sleeve; 6. Fixing baffle; 7. Main shaft screw; 8. Nut body; 9. Transmission groove; 10. Sealing head; 11. Oil drain opening; 12. Sealing cover plate; 13. Lubrication groove; 14. Placement groove; 15. Storage groove; 16. Oil injection hole; 17. Oil storage sponge strip. Detailed Implementation

[0019] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0020] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this spindle nut assembly includes a connecting rod 1. A limit baffle 2 is welded to the right side of the connecting rod 1. A spindle screw 7 is welded to the right side of the limit baffle 2. An installation sleeve 5 is threaded onto the surface of the spindle screw 7. A nut body 8 is welded to the right side of the installation sleeve 5. A left stop 4 and a right stop 3 are welded to the opposite sides of the limit baffle 2 and the installation sleeve 5, respectively. A lubrication groove 13 is provided on the left side of the installation sleeve 5. An oil storage sponge strip 17 is placed in the inner cavity of the lubrication groove 13.

[0021] To elaborate further, the lubrication groove 13 includes a storage groove 15, a placement groove 14 is provided on the left side of the storage groove 15, and an oil filling hole 16 is provided at the top of the inner cavity of the storage groove 15. A sealing head 10 is inserted into the top of the inner cavity of the oil filling hole 16, and a sealing cover plate 12 is inserted into the left side of the placement groove 14.

[0022] The bottom of the lubrication groove 13 has an oil drain opening 11, and the left side of the connecting rod 1 has a transmission groove 9. There are three lubrication grooves 13, which are arranged at equal intervals. The connecting rod 1 and the limiting baffle 2 are integrally formed.

[0023] In actual manufacturing, a fixing baffle 6 is welded onto the outer surface between the mounting sleeve 5 and the nut body 8, and the mounting sleeve 5, the fixing baffle 6 and the nut body 8 are integrally formed structures.

[0024] In use, the drive shaft and connecting rod 1 are fitted together to drive the main shaft screw 7 to rotate. After guiding the mounting sleeve 5, the rotational motion of the main shaft can be converted into the linear motion of the nut body 8. Through the high-precision design of the tooth profile, the nut achieves a high-precision conversion of 2±0.02mm linear motion for one rotation of the main shaft, thereby achieving efficient and stable braking force output. When installing the mounting sleeve 5, when it is rotated to the leftmost position, the right stop 3 on the left side of the mounting sleeve 5 contacts the left stop 4 on the right side of the limit baffle 2 to stop it. At this time, the mounting sleeve 5 is in the optimal assembly position. Subsequently, the mounting sleeve 5 moves left and right linearly with the angle remaining unchanged. This improves the assembly accuracy and the stability of use, and reduces production and assembly costs.

[0025] Contents not described in detail herein are existing technologies known to those skilled in the art. The specific embodiments described herein are merely illustrative examples illustrating the spirit of this invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this invention or exceeding the scope defined by the appended claims.

Claims

1. A spindle nut assembly, comprising a connecting rod (1), characterized in that: A limiting baffle (2) is welded to the right side of the connecting rod (1), and a main shaft screw (7) is welded to the right side of the limiting baffle (2). An installation sleeve (5) is threaded on the surface of the main shaft screw (7). A nut body (8) is welded to the right side of the installation sleeve (5). A left stop (4) and a right stop (3) are welded to the opposite side of the limiting baffle (2) and the installation sleeve (5). A lubrication groove (13) is opened on the left side of the installation sleeve (5). An oil storage sponge strip (17) is placed in the inner cavity of the lubrication groove (13).

2. The spindle nut assembly according to claim 1, characterized in that: The lubrication groove (13) includes a storage groove (15), a placement groove (14) is provided on the left side of the storage groove (15), and an oil injection hole (16) is provided at the top of the inner cavity of the storage groove (15).

3. The spindle nut assembly according to claim 2, characterized in that: A sealing head (10) is inserted into the top of the inner cavity of the oil injection hole (16), and a sealing cover plate (12) is inserted into the left side of the placement groove (14).

4. The spindle nut assembly according to claim 1, characterized in that: The bottom of the inner cavity of the lubrication groove (13) is provided with an oil drain opening (11), and the left side of the connecting rod (1) is provided with a transmission groove (9).

5. The spindle nut assembly according to claim 1, characterized in that: The number of the lubrication grooves (13) is three, and they are arranged at equal intervals. The connecting rod (1) and the limiting baffle (2) are integrally formed.

6. The spindle nut assembly according to claim 1, characterized in that: A fixing baffle (6) is welded to the outer surface between the mounting sleeve (5) and the nut body (8). The mounting sleeve (5), the fixing baffle (6) and the nut body (8) are integrally formed.

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