Noise reduction self-cleaning type ball nut

Abstract

The application relates to the technical field of ball nuts, in particular to a noise-reducing self-cleaning ball nut which comprises a nut shell, a circulator is arranged in the nut shell, an end cover is arranged at one end of the nut shell, a waste oil collecting bin is arranged on the outer surface of the nut shell, oil storage units are arranged on the outer surfaces of the two sides of the waste oil collecting bin, oil feeding units are arranged on the sides away from each other of the oil storage units, and a tail sleeve is arranged at one end of the circulator. Through the arrangement of the oil storage units and the oil feeding units, the circulator is always in a lubricating oil covering path, the lubricating effect is guaranteed, meanwhile, when the device moves, the recovered unit can automatically scrape and collect the lubricating oil passing through the road section, the effect of self-cleaning without energy consumption is realized, the problem that the lubricating oil is oxidized and polluted for a long time is avoided, the smooth operation is guaranteed, and the internal friction is reduced.

Description

Technical Field

[0001] This invention relates to the field of ball screw nut technology, specifically a noise-reducing self-cleaning ball screw nut. Background Technology

[0002] A ball nut assembly is a component consisting of a ball nut, steel balls, a circulation mechanism, and accessories. It belongs to the transmission device in the field of mechanical engineering. It achieves linear motion by rolling the balls on the threaded surface, converting sliding friction into rolling friction, thereby greatly reducing the coefficient of friction and improving transmission efficiency.

[0003] Currently, ball screw nuts require the installation of a lead screw or the application of lubricating oil inside the nut to further reduce friction between the nut and the lead screw during use. However, over time, the lubricating oil will still oxidize. Simultaneously, the lubricating oil adhering to the lead screw surface will attract dust from the air, which will move into the nut's interior as it is pulled back. This phenomenon not only contaminates the lubricating oil and affects its lubrication effect, but also generates significant noise during operation due to the increased coefficient of friction, impacting the operating environment, reducing service life, shortening maintenance cycles, and increasing the frequency of maintenance. Summary of the Invention

[0004] The purpose of this invention is to provide a noise-reducing, self-cleaning ball nut to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a nut housing is included, a circulator is connected inside the nut housing, an end cap is connected to one end of the nut housing, a waste oil collection chamber is connected to the outer surface of the nut housing, oil storage units are connected to both sides of the outer surface of the waste oil collection chamber, an oil supply unit is connected to the side of each oil storage unit that is far apart from the other, a tail sleeve is connected to one end of the circulator, two sets of recovery units are symmetrically arranged on the inner ring of the tail sleeve, a drive unit is connected inside the recovery unit, an air extraction unit is connected to the top of the drive unit, and an adjustment unit is connected to the outer ring of the oil storage unit.

[0006] A noise reduction chamber is connected to the inner ring of the waste oil collection chamber, and the oil storage unit is connected to the surface of the noise reduction chamber. A partition is connected between the inner walls of the waste oil collection chamber.

[0007] Preferably, the circulator includes an inner liner, and multiple sets of circulation grooves are formed inside the inner liner, each of which is connected to a plurality of steel balls.

[0008] Preferably, the oil storage unit includes two oil storage ring chambers. Guide rods are connected between the two sides of the inner wall of each oil storage ring chamber. A push plate is slidably provided at one end of each guide rod, and a limit ring is connected to the other end of each guide rod. The opposite sides of the oil storage ring chambers are connected to the oil supply unit. The same oil injection tee is connected to one side of the two oil storage ring chambers, and a sealing plug is connected to one end of the oil injection tee.

[0009] Preferably, the oiling unit includes an oiling pipe, the bottom end of which extends through into the circulator and is rotatably equipped with oiling balls. Multiple sets of oil-retaining cotton are connected to the surface of the oiling balls, and a flat ring layer is connected to one side of the oiling balls.

[0010] Preferably, the inner ring of the tail sleeve has two mounting slots, the recovery unit includes a sliding frame slidably disposed in the mounting slot, a plurality of traction springs are connected to one side of the inner wall of the sliding frame, and an oil recovery unit is connected to one side of the sliding frame.

[0011] Preferably, the oil collection unit includes a collection pipeline, one end of which is connected to an oil scraper head, a beveled sealing plate is connected to one side of the oil scraper head, a connection hole is provided on one side of the collection pipeline, the other end of the collection pipeline extends into the noise reduction chamber and is connected to the waste oil collection chamber, and the drive unit is connected and installed inside the sliding frame.

[0012] Preferably, the drive unit includes a hemispherical frame rotatably disposed on one side of the inner wall of the sliding frame and a return spring mounted on one side of the inner wall of the sliding frame. A cam is connected between the inner sides of the hemispherical frame. A top plate frame is connected to the top of the return spring. A roller is rotatably disposed at the bottom of the top plate frame. One side of the roller abuts against the cam. The air extraction unit is connected to the top of the top plate frame. Anti-slip teeth are connected to the outer ring of the hemispherical frame.

[0013] Preferably, the air extraction unit includes an airbag, with clamping plates connected to both the upper and lower sides of the inner wall of the airbag, and a supporting spring connected between the clamping plates. An exhaust valve is connected to one side of the airbag, and an air extraction tube is connected to the top of the airbag.

[0014] Preferably, the air extraction pipe includes a connecting pipe, one end of which is connected to a one-way air inlet nozzle, and the other end of which extends through the oil collection unit into the waste oil collection chamber and is connected to a protective head.

[0015] Preferably, the adjustment unit includes two sets of ring heads rotatably disposed on one side of the oil storage unit. A squeezing inclined block is connected to one side of the inner wall of the ring head. A damping rubber head is connected to one end of the squeezing inclined block. The other side of the damping rubber head abuts against the circulator. An arc-shaped horizontal plate is connected to the side of the ring heads that are close to each other. A groove is provided on the side of the ring heads that are close to each other.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] This application, through the setting of an oil storage unit and an oil supply unit, ensures that the circulator is always within the lubricating oil coverage path, guaranteeing lubrication effect. At the same time, when the device moves, the recovery unit can automatically scrape and collect the lubricating oil along the route, achieving a self-cleaning effect without energy consumption. This avoids the problem of lubricating oil oxidation and contamination caused by prolonged exposure to the outside, ensuring smooth operation, reducing internal friction, and, with the cooperation of a noise reduction chamber, reducing the generation and propagation of noise, extending the service life, and reducing the number of maintenance times. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a noise-reducing self-cleaning ball nut according to the present invention;

[0019] Figure 2 This is a rear view schematic diagram of a noise-reducing self-cleaning ball nut according to the present invention;

[0020] Figure 3 This is a partial structural diagram of a noise-reducing self-cleaning ball nut according to the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of the adjustment unit in a noise-reducing self-cleaning ball nut according to the present invention;

[0022] Figure 5 This is a side sectional view of a noise-reducing self-cleaning ball nut according to the present invention;

[0023] Figure 6 for Figure 5 Enlarged structural diagram of section A;

[0024] Figure 7 for Figure 6 Enlarged structural diagram of section B;

[0025] Figure 8 This is a schematic diagram of the structure of a circulator in a noise-reducing self-cleaning ball nut according to the present invention;

[0026] Figure 9 This is a schematic diagram of the drive unit in a noise-reducing self-cleaning ball nut according to the present invention;

[0027] Figure 10This is a schematic diagram of the recovery unit compartment and oil storage unit in a noise-reducing self-cleaning ball nut according to the present invention;

[0028] Figure 11 This is a schematic diagram of the oil collection unit in a noise-reducing self-cleaning ball nut according to the present invention;

[0029] Figure 12 This is a schematic diagram of the oiling unit in a noise-reducing self-cleaning ball nut according to the present invention;

[0030] Figure 13 This is a schematic diagram of the structure of the protective head in a noise-reducing self-cleaning ball nut according to the present invention;

[0031] Figure 14 This is a side cross-sectional view of the recycling unit compartment in a noise-reducing self-cleaning ball nut according to the present invention.

[0032] In the diagram: 1. Nut housing; 2. Circulator; 21. Inner bushing; 22. Circulation trough; 23. Steel ball; 3. End cap; 4. Waste oil collection chamber; 41. Noise reduction chamber; 42. Partition plate; 5. Oil storage unit; 51. Oil storage ring chamber; 52. Guide rod; 53. Push plate; 54. Limiting ring; 55. Oil injection tee support; 6. Oil supply unit; 61. Oil supply pipe; 62. Oil supply ball; 63. Oil storage cotton; 64. Flat ring layer; 7. Tail sleeve; 8. Recovery unit; 81. Sliding frame; 82. Traction spring; 83. Oil collection unit; 831. Recovery pipeline; 832. Oil scraper head; 833. Angled sealing plate; 834. Connecting hole; 9. Drive unit; 91. Hemispherical frame; 92. Cam; 93. Return spring; 94. Top plate frame; 95. Roller; 96. Anti-slip teeth; 10. Air extraction unit; 101. Airbag; 102. Clamping plate; 103. Support spring; 104. Exhaust valve; 105. Air extraction fitting; 1051. Connecting pipe; 1052. One-way air inlet rubber head; 1053. Protective head; 11. Adjustment unit; 111. Ring head; 112. Extrusion wedge; 113. Damping rubber head; 114. Arc-shaped horizontal plate; 1111. Groove. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figure 1-14The present invention provides a technical solution comprising: a nut housing 1, a circulator 2 connected inside the nut housing 1, an end cap 3 connected to one end of the nut housing 1 for limiting the circulator 2 and preventing lubricating oil from overflowing, a waste oil collection chamber 4 connected to the outer surface of the nut housing 1, an oil storage unit 5 connected to both sides of the outer surface of the waste oil collection chamber 4, an oil supply unit 6 connected to the side of the oil storage unit 5 that is far apart from each other, a tail sleeve 7 connected to one end of the circulator 2, two sets of recovery units 8 symmetrically arranged on the inner ring of the tail sleeve 7, a drive unit 9 connected inside the recovery unit 8, an air extraction unit 10 connected to the top of the drive unit 9, and an adjustment unit 11 connected to the outer ring of the oil storage unit 5;

[0035] like Figure 14 As shown, a noise reduction chamber 41 is connected to the inner ring of the waste oil collection chamber 4. The noise reduction chamber 41 is filled with noise reduction material. The oil storage unit 5 is connected to the outer surface of the noise reduction chamber 41. A partition 42 is connected between the inner walls of the waste oil collection chamber 4, which can divide the waste oil collection chamber 4 into two waste oil storage spaces. A drain outlet is provided on one side of each of the two independent oil storage spaces.

[0036] like Figure 8 As shown, the circulator 2 includes an inner sleeve 21, and multiple sets of circulation grooves 22 are opened inside the inner sleeve 21. Multiple steel balls 23 are connected inside each circulation groove 22. The steel balls 23 are located in the threaded groove of the mounting screw, and the steel balls 23 circulate autonomously through the circulation grooves 22 to ensure the effect of use.

[0037] like Figure 6 and Figure 10 As shown, the oil storage unit 5 includes two oil storage ring chambers 51 installed at both ends of the noise reduction chamber 41. Guide rods 52 are connected between the two sides of the inner wall of the oil storage ring chamber 51. A push plate 53 is slidably installed at one end of the guide rod 52. When the lubricating oil inside is discharged through the oil supply unit 6, the negative pressure generated will drive the push plate 53 to move along the guide rod 52 and push the lubricating oil inside, thereby ensuring the oil supply effect. A limit ring 54 is connected to the other end of the guide rod 52. The limit ring 54 can abut against the push plate 53, thereby ensuring that the push plate 53 can be pushed back to its original position when lubricating oil is injected into the oil storage ring chamber 51 through the oil injection tee pipe bracket 55. The same oil injection tee pipe bracket 55 is connected to one side of the two oil storage ring chambers 51. A sealing plug is connected to one end of the oil injection tee pipe bracket 55. An air inlet microhole is opened on the side of the oil storage ring chamber 51 away from the push plate 53.

[0038] Reference Figure 12As shown, the oiling unit 6 includes an oiling pipe 61. The bottom end of the oiling pipe 61 extends through into the circulator 2 and is rotatably equipped with oiling balls 62. Multiple sets of oil-retaining cotton 63 are connected to the surface of the oiling balls 62. A flat ring layer 64 is connected to one side of the oiling balls 62. The oiling balls 62 are located in the thread groove of the screw. The flat ring layer 64 abuts against the thread groove. When the screw rotates, the friction with the flat ring layer 64 will cause the oiling balls 62 to rotate. The oil-retaining cotton 63 will absorb the lubricating oil in the oiling pipe 61 and coat it in the thread groove of the screw to ensure the oiling effect. At the same time, when the lubricating oil in the oiling pipe 61 is dipped, it will continuously draw the lubricating oil in the oil storage ring 51.

[0039] Reference Figure 5 As shown, the inner ring of the tail sleeve 7 has two mounting slots. The recovery unit 8 includes a sliding frame 81 slidably disposed in the mounting slot. Multiple sets of traction springs 82 are connected to one side of the inner wall of the sliding frame 81. The other end of the traction spring 82 is connected to one side of the mounting slot. An oil collection unit 83 is connected to one side of the sliding frame 81. The oil collection unit 83 is squeezed by the elasticity of the traction spring 82, so that it is fitted into the threaded groove on the threaded rod. The oil collection unit 83 includes a recovery pipe 831. One end of the recovery pipe 831 is connected to an oil scraper head 832. 32 is located in the thread groove of the lead screw. There are two sets of recycling units 8, and the two scraper heads 832 face the same direction. When the lead screw rotates forward or backward, one set will scrape the lubricating oil in the thread groove of the lead screw. A beveled sealing plate 833 is connected to one side of the scraper head 832. A connection hole 834 for inserting the connecting pipe 1051 is opened on one side of the recycling pipe 831. The other end of the recycling pipe 831 extends into the noise reduction chamber 41 and is flush with the inner wall of the waste oil collection chamber 4 to facilitate the collection of waste oil. The drive unit 9 is connected and installed inside the sliding frame 81.

[0040] like Figure 7 and Figure 9 As shown, the drive unit 9 includes a hemispherical frame 91 rotatably mounted on one side of the inner wall of the sliding frame 81 and a return spring 93 mounted on one side of the inner wall of the sliding frame 81. A through hole is opened on one side of the sliding frame 81 corresponding to the hemispherical frame 91. The drive unit 9 is installed in the upper recycling unit 8, and the lower recycling unit 8 can collect by gravity. A cam 92 is connected between the inner sides of the hemispherical frame 91. A top plate frame 94 is connected to the top of the return spring 93. A roller 95 is rotatably mounted on the bottom of the top plate frame 94. One side of the roller 95 abuts against the cam 92. The hemispherical frame 91 abuts against the non-threaded part of the lead screw through anti-slip teeth 96. When the lead screw rotates, it will drive the hemispherical frame 91 to rotate. When the hemispherical frame 91 rotates, it will drive the middle 92 to rotate. When the cam 92 rotates, it will push the roller 95, thereby moving the top plate frame 94 up and down to drive the upper suction unit 10.

[0041] Reference Figure 7 As shown, the air extraction unit 10 includes an airbag 101. A retaining plate 102 is connected to both the upper and lower sides of the inner wall of the airbag 101. A supporting spring 103 is connected between the retaining plates 102. An exhaust valve 104 is connected to one side of the airbag 101. This exhaust valve 104 is unidirectional. An air extraction pipe 105 is connected to the top of the airbag 101. When the top plate frame 94 moves upward, it compresses the airbag 101, and the air inside the airbag 101 is discharged through the exhaust valve 104. When the top plate frame 94 descends, the supporting spring 103 pushes the two retaining plates 102 back to their original positions, thereby enabling the airbag 101 to perform air extraction. The air is extracted from the waste oil collection chamber 4 through the air extraction pipe 105, creating a negative pressure inside the waste oil collection chamber 4. This draws in the lubricating oil from the recovery pipe 831, continuously extracting the waste oil from the recovery pipe 831 into the waste oil collection chamber 4, ensuring effective waste oil collection.

[0042] Reference Figure 6 As shown, the air extraction pipe 105 includes a connecting pipe 1051. One end of the connecting pipe 1051 is connected to a one-way air inlet nozzle 1052. Air will only enter the airbag 101 from the waste oil collection chamber 4 through the one-way air inlet nozzle 1052. The other end of the connecting pipe 1051 extends through the oil collection unit 83 into the interior of the waste oil collection chamber 4 and is connected to a protective head 1053. The end of the connecting pipe 1051 with the protective head 1053 is higher than the recovery pipe 831 to ensure the air extraction effect.

[0043] Reference Figure 4 The adjusting unit 11 includes two sets of ring heads 111 rotatably mounted on one side of the oil storage unit 5. Multiple extrusion inclined blocks 112 are connected to one side of the inner wall of the ring head 111. The extrusion inclined blocks 112 are located on one side of each oil pipe 61. A damping rubber head 113 is connected to one end of the extrusion inclined block 112. The other side of the damping rubber head 113 abuts against the circulator 2 to ensure the rotational damping effect between the ring head 111 and the oil storage unit 5, thereby ensuring the positioning effect. An arc-shaped horizontal plate 114 is connected to the side of the ring heads 111 that is close to each other. Rotating the ring head 111 drives each extrusion inclined block 112 to rotate. Each side of the extrusion inclined block 112 is provided with an inclined surface, thereby extruding the adjacent oil pipes 61 to control the amount of lubricating oil supplied. Grooves 1111 are provided on the side of the ring heads 111 that is close to each other.

[0044] Working principle: When in use, the device moves as the lead screw rotates. During this movement, each oiling unit 6 applies lubricating oil to the surface of the lead screw, ensuring lubrication during operation. The steel balls 23 in the circulating air 2 are always positioned between the two oiling units 6, ensuring they remain within the lubricating oil coating range during forward and reverse movement. The amount of oil applied by the oiling unit 6 can be controlled by the adjusting unit 11. When the device moves forward, the drive unit 9 drives the air extraction unit 10 to extract air from the waste oil collection chamber 4. This negative pressure helps the upper recovery unit 8 scrape and collect the lubricating oil from the lead screw thread groove. When reversing, the lower recovery unit 8 scrapes and collects the oil, preventing prolonged exposure of the lubricating oil to the outside, which could lead to oxidation and contamination, thus achieving a self-cleaning effect.

[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0046] Although embodiments of the 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 these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A noise-reducing self-cleaning ball nut, comprising a nut housing (1), characterized in that: The nut housing (1) is internally connected to a circulator (2), and one end of the nut housing (1) is connected to an end cap (3). The outer surface of the nut housing (1) is connected to a waste oil collection chamber (4). Both sides of the outer surface of the waste oil collection chamber (4) are connected to oil storage units (5). On the side of the oil storage units (5) that are far apart from each other, an oil supply unit (6) is connected to each other. One end of the circulator (2) is connected to a tail sleeve (7). Two sets of recycling units (8) are symmetrically arranged in the inner ring of the tail sleeve (7). A drive unit (9) is connected inside the recycling unit (8). An air extraction unit (10) is connected to the top of the drive unit (9). An adjustment unit (11) is connected to the outer ring of the oil storage unit (5). The waste oil collection chamber (4) is connected to a noise reduction chamber (41) in the inner ring, and the oil storage unit (5) is connected to the surface of the noise reduction chamber (41). A partition (42) is connected between the inner walls of the waste oil collection chamber (4).

2. The noise-reducing self-cleaning ball nut according to claim 1, characterized in that: The circulator (2) includes an inner liner (21), and multiple sets of circulation grooves (22) are opened inside the inner liner (21). Multiple steel balls (23) are connected inside each circulation groove (22).

3. The noise-reducing self-cleaning ball nut according to claim 1, characterized in that: The oil storage unit (5) includes two oil storage ring chambers (51). Guide rods (52) are connected between the two sides of the inner wall of each oil storage ring chamber (51). A push plate (53) is slidably provided at one end of the guide rod (52), and a limit ring (54) is connected to the other end of the guide rod (52). The side of the oil storage ring chambers (51) that is far apart from each other is connected to the oil supply unit (6). The same oil injection tee pipe rack (55) is connected to one side of the two oil storage ring chambers (51), and a sealing plug is connected to one end of the oil injection tee pipe rack (55).

4. The noise-reducing self-cleaning ball nut according to claim 3, characterized in that: The oiling unit (6) includes an oiling pipe (61), the bottom end of which extends through into the circulator (2) and is rotatably equipped with an oiling ball (62). Multiple sets of oil storage cotton (63) are connected to the surface of the oiling ball (62), and a flat ring layer (64) is connected to one side of the oiling ball (62).

5. The noise-reducing self-cleaning ball nut according to claim 1, characterized in that: The tail sleeve (7) has two mounting slots on its inner ring. The recovery unit (8) includes a sliding frame (81) that is slidably disposed in the mounting slot. Multiple sets of traction springs (82) are connected to one side of the inner wall of the sliding frame (81). An oil recovery unit (83) is connected to one side of the sliding frame (81).

6. The noise-reducing self-cleaning ball nut according to claim 5, characterized in that: The oil collection unit (83) includes a collection pipe (831), one end of which is connected to an oil scraper head (832), and one side of the oil scraper head (832) is connected to a beveled sealing plate (833). A connection hole (834) is opened on one side of the collection pipe (831), and the other end of the collection pipe (831) extends into the noise reduction chamber (41) and is connected to the waste oil collection chamber (4). The drive unit (9) is connected and installed inside the sliding frame (81).

7. A noise-reducing self-cleaning ball nut according to claim 6, characterized in that: The drive unit (9) includes a hemispherical frame (91) rotatably mounted on one side of the inner wall of the sliding frame (81) and a return spring (93) mounted on one side of the inner wall of the sliding frame (81). A cam (92) is connected between the inner sides of the hemispherical frame (91). A top plate frame (94) is connected to the top of the return spring (93). A roller (95) is rotatably mounted at the bottom of the top plate frame (94). One side of the roller (95) abuts against the cam (92). The air extraction unit (10) is connected to the top of the top plate frame (94). Anti-slip teeth (96) are connected to the outer ring of the hemispherical frame (91).

8. The noise-reducing self-cleaning ball nut according to claim 7, characterized in that: The air extraction unit (10) includes an airbag (101), with a retaining plate (102) connected to both the upper and lower sides of the inner wall of the airbag (101), a support spring (103) connected between the retaining plates (102), an exhaust valve (104) connected to one side of the airbag (101), and an air extraction pipe (105) connected to the top of the airbag (101).

9. A noise-reducing self-cleaning ball nut according to claim 8, characterized in that: The air extraction pipe (105) includes a connecting pipe (1051), one end of which is connected to a one-way air inlet nozzle (1052), and the other end of which passes through the oil collection unit (83) and extends into the waste oil collection chamber (4), and is connected to a protective head (1053).

10. A noise-reducing self-cleaning ball nut according to claim 1, characterized in that: The adjustment unit (11) includes two sets of ring heads (111) rotatably disposed on one side of the oil storage unit (5). A squeezing inclined block (112) is connected to one side of the inner wall of the ring head (111). A damping rubber head (113) is connected to one end of the squeezing inclined block (112). The other side of the damping rubber head (113) abuts against the circulator (2). An arc-shaped horizontal plate (114) is connected to the side of the ring heads (111) that are close to each other. A groove (1111) is opened on the side of the ring heads (111) that are close to each other.

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