Ball and sliding combined nut mechanism

Abstract

The utility model discloses a ball and sliding combined nut mechanism which comprises a lead screw and a third nut. Wherein the lead screw is sleeved with a first nut and a second nut, and a first gasket is arranged between the first nut and the second nut; the first nut and the second nut are arranged in the third nut; the first nut is a ball nut, and the second nut is a sliding nut. The transmission mechanism has high transmission precision and a self-locking function; the overall load bearing capacity is improved, and adaptability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of screw rods and nuts, in particular to a nut mechanism of a ball and slide combination. Background Art

[0002] Current nut transmission systems typically use a single type of nut, such as a sliding nut or a ball nut. While sliding nuts are simple and inexpensive, they suffer from high friction, low transmission efficiency, and are prone to wear. Ball nuts offer the advantages of high precision, high rigidity, and a long lifespan, but they are not self-locking and require regular lubrication. Summary of the Invention

[0003] According to an embodiment of the present invention, a nut mechanism of a ball and slide combination is provided, comprising:

[0004] A screw rod, wherein a first nut and a second nut are sleeved on the screw rod, and a first gasket is provided between the first nut and the second nut;

[0005] a third nut, wherein the first nut and the second nut are disposed within the third nut;

[0006] The first nut is a ball nut, and the second nut is a sliding nut.

[0007] Furthermore, a cover is provided at the front end of the third nut, and the cover is connected to the third nut via a plurality of screws.

[0008] Furthermore, an annular limiting groove is provided at the rear end of the third nut, and a retaining spring is provided in the annular limiting groove.

[0009] Furthermore, a second gasket is provided between the second nut and the retaining spring.

[0010] Furthermore, a limiting step is provided inside the third nut, and a gap is provided between the limiting step and the first gasket.

[0011] Furthermore, a reverser and a ball bearing are provided in the first nut.

[0012] The nut mechanism of the ball and slide combination according to the embodiment of the utility model has high transmission accuracy and self-locking function; improves the overall load bearing capacity and has strong adaptability.

[0013] It is to be understood that both the foregoing general description and the following detailed description are exemplary, and are intended to provide further explanation of the technology as claimed. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram according to an embodiment of the present utility model;

[0015] Figure 2A top view of an embodiment of the present invention;

[0016] Figure 3 for Figure 2 AA sectional view;

[0017] Figure 4 for Figure 3 Enlarged view of point A. DETAILED DESCRIPTION

[0018] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings to further illustrate the present invention.

[0019] First, combine Figures 1 to 4 The nut mechanism of the ball and sliding combination according to the embodiment of the present invention is described and is used in transmission equipment, and has a wide range of application scenarios.

[0020] like Figures 1 to 4 As shown, the nut mechanism of the ball and slide combination of the embodiment of the present invention comprises:

[0021] A screw rod 1 is provided with a first nut 2 and a second nut 3, which are respectively threadedly connected to the screw rod 1; a first washer 4 is provided between the first nut 2 and the second nut 3; the first nut 2, the first washer 4 and the second nut 3 are sequentially provided on the screw rod 1;

[0022] A third nut 5 , wherein the first nut 2 and the second nut 3 are arranged inside the third nut 5 ;

[0023] The first nut 2 is a ball nut, and the second nut 3 is a sliding nut. The sliding nut has a large friction resistance and a low positioning accuracy, while the ball nut replaces sliding friction with rolling friction, thereby improving the transmission accuracy. The combined nut can maintain high precision while also utilizing the self-locking function of the sliding nut to prevent loosening, thereby further improving the stability of the combined nut. It is suitable for various mechanical transmission systems, especially in application scenarios that require high precision, high rigidity and large load bearing capacity.

[0024] Further, if Figures 1-3 As shown, in this embodiment, a cover 6 is provided at the front end of the third nut 5 , and the cover 6 is connected to the third nut 5 by a plurality of screws for limiting the position of the first nut 2 .

[0025] Further, if Figure 4 As shown, in this embodiment, an annular limiting groove 51 is provided at the rear end of the third nut 5 , and a retaining spring 8 is provided in the annular limiting groove 51 . The retaining spring 8 is used to limit the position of the second nut 3 .

[0026] Further, if Figures 3 and 4As shown, in this embodiment, a second washer 9 is provided between the second nut 3 and the retaining spring 8 , and the second washer 9 plays a buffering role for the second nut 3 .

[0027] Further, if Figure 3 As shown, in this embodiment, a limiting step 52 is provided inside the third nut 5 , and a gap is provided between the limiting step 52 and the first gasket 4 , and lubricating oil can be placed in the gap.

[0028] Further, if Figure 3 As shown, in this embodiment, a deflector 21 and a ball 22 are provided in the first nut 2 .

[0029] During use, first place the retaining ring 8 into the annular limit groove 51, then place the second gasket 9, the second nut 3, the first gasket 4, and the first nut 2 in sequence from the front end of the third nut 5, cover it with the cover 6 and fix it with screws, and then screw in the screw 1.

[0030] Above, refer to Figures 1 to 4 The invention discloses a nut mechanism of a ball and slide combination according to an embodiment of the invention, which has high transmission accuracy and self-locking function, improves the overall load bearing capacity and has strong adaptability.

[0031] It should be noted that, in this specification, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, the elements defined by the phrase "comprising..." do not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the elements.

[0032] Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as limiting the present invention. After reading the above description, various modifications and alternatives to the present invention will be readily apparent to those skilled in the art. Therefore, the scope of protection of the present invention shall be defined by the appended claims.

Claims

1. A nut mechanism with a ball and slide combination, characterized in that: Include: a screw rod, wherein a first nut and a second nut are sleeved on the screw rod, and a first gasket is provided between the first nut and the second nut; a third nut, wherein the first nut and the second nut are disposed within the third nut; The first nut is a ball nut, and the second nut is a sliding nut.

2. The ball and slide combination nut mechanism according to claim 1, characterized in that: A sealing cover is provided at the front end of the third nut, and the sealing cover is connected to the third nut via a plurality of screws.

3. The ball and slide combination nut mechanism according to claim 1, characterized in that: The rear end of the third nut is provided with an annular limiting groove, and a retaining spring is provided in the annular limiting groove.

4. The ball and slide combination nut mechanism according to claim 3, characterized in that: A second gasket is provided between the second nut and the clamping spring.

5. The ball and slide combination nut mechanism according to claim 1, characterized in that: A limiting step is provided inside the third nut, and a gap is provided between the limiting step and the first gasket.

6. The ball and slide combination nut mechanism according to claim 1, characterized in that: A reverser and a ball are arranged in the first nut.

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