A dustproof ball screw pair

Abstract

The utility model relates to the technical field of screws, specifically a dustproof ball screw pair, including a screw, a nut is threadedly connected to the screw, a slot is provided at the top of the nut, an oil inlet nozzle is provided on the slot, and the top of the oil inlet nozzle is sealed by a rubber plug, an air duct is provided in the connecting part, the air duct is connected to the fan, a sealing ring is installed between the connecting part and the nut, an inverter is installed in the nut, and a ball is installed on the inverter. The device is provided with a connecting part that is threadedly connected to the nut by a positioning bolt, so that it is convenient to disassemble and limit the sealing ring, prevent the sealing ring from falling off, and also facilitate the replacement of the sealing ring, and inject lubricating oil into the oil inlet nozzle to enter the ball so that the ball and the contact end of the screw can be more smoothly transmitted, wherein the ball is in the inverter to change the output rotation speed and torque, and a small fan and air duct are provided to clean dust, so that it has good smoothness during operation.

Description

Technical Field

[0001] The utility model relates to the technical field of screws, in particular to a dustproof ball screw pair. Background Art

[0002] Ball screw pair is also called ball screw pair or ball screw pair. It is composed of two sets of screw and nut. It is the most accurate and most commonly used transmission device in current transmission machinery. When making an object move, it is generally necessary to transmit the motion generated by the power directly or indirectly through other mechanisms to the final moving part. Take the engine as an example. In the engine, the piston moves up and down due to the combustion of gasoline, and then is finally transmitted to the wheel through the intermediate mechanism to make it rotate.

[0003] At present, sealing rings are often installed on roller screw pairs by gluing. When the sealing ring is damaged and needs to be replaced, the glue adhesion is likely to cause residues on the installation site, affecting the installation of the new sealing ring. In addition, the operation of removing the sealing ring by glue adhesion is cumbersome and difficult to clean. In addition, during the use of the roller screw pair, the sealing ring can only prevent dust from entering the nut, but the dust falling on the screw cannot be effectively handled. Long-term use can easily cause wear of the nut. A dust-proof ball screw pair is needed to solve this problem. Utility Model Content

[0004] The utility model aims to provide a dustproof ball screw pair to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a dustproof ball screw pair, comprising a screw rod, a nut is threadedly connected to the screw rod, a slot is provided at the top of the nut, an oil inlet nozzle is provided on the slot, and the top of the oil inlet nozzle is sealed by a rubber plug, a flange is installed on one side of the nut and is integrated, a connecting part is provided on the side of the nut away from the flange, an air duct is provided in the connecting part, the air duct is connected to a fan, a sealing ring is installed between the connecting part and the nut, an inverter is installed in the nut, and a ball is installed on the inverter.

[0006] As a preferred technical solution of the utility model, the oil inlet nozzle is connected with a shunt pipe, the shunt pipe is connected with a connecting pipe, and the connecting pipe is connected with the inverter.

[0007] As a preferred technical solution of the utility model, an opening is provided in the middle of the nut, and the opening is threadedly connected to the screw rod.

[0008] As a preferred technical solution of the present utility model, a limiting groove is provided between the connecting portion and the nut, the sealing ring is limited in the limiting groove, and the sealing ring is made of rubber material.

[0009] As a preferred technical solution of the utility model, thread grooves are provided on the nut and the connecting portion, and the thread grooves on the nut and the connecting portion are locked by positioning bolts.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] (1) The utility model is a dustproof ball screw pair. The connecting part of the ball screw pair provided in the device is threadedly connected to the nut through a positioning bolt, so that it is convenient for disassembly and assembly to limit the sealing ring, prevent the sealing ring from falling off, and also facilitate the replacement of the sealing ring. By injecting lubricating oil into the ball through the oil inlet nozzle, the ball and the contact end of the screw can be transmitted more smoothly. The ball is in the inverter to change the output rotation speed and torque, and a small fan and air duct are provided to clean the dust, so that the running of the ball is smooth. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 It is a structural schematic diagram of a dustproof ball screw pair according to an embodiment of the utility model;

[0014] Figure 2 It is a schematic diagram of the structure inside a dustproof ball screw pair according to an embodiment of the utility model;

[0015] Figure 3 According to the utility model Figure 2 Schematic diagram of the structure enlarged at point A in the middle.

[0016] Reference numerals:

[0017] 1. Screw; 2. Nut; 3. Opening; 4. Flange; 5. Slot; 6. Oil inlet nozzle; 7. Diverter pipe; 8. Connecting pipe; 9. Inverter; 10. Ball; 11. Sealing ring; 12. Limiting groove; 13. Threaded groove; 14. Positioning bolt; 15. Fan; 16. Air duct; 17. Connecting part. DETAILED DESCRIPTION

[0018] Below, in conjunction with the accompanying drawings and specific implementation methods, the utility model is further described:

[0019] Example 1

[0020] refer to Figure 1 to Figure 2Embodiment 1 is described, comprising a screw rod 1, a nut 2 is threadedly connected to the screw rod 1, a slot 5 is provided at the top of the nut 2, an oil inlet nozzle 6 is provided on the slot 5, and the top of the oil inlet nozzle 6 is sealed by a rubber plug, a flange 4 is installed on one side of the nut 2 and is integrated, a connecting portion 17 is provided on the side of the nut 2 away from the flange 4, an air duct 16 is provided in the connecting portion 17, the air duct 16 is connected to the fan 15, a sealing ring 11 is installed between the connecting portion 17 and the nut 2, an inverter 9 is installed in the nut 2, a ball 10 is installed on the inverter 9, a shunt pipe 7 is connected to the oil inlet nozzle 6, and the shunt pipe 7 is connected to a connecting pipe 8, lubricating oil is injected into the oil inlet nozzle 6 into the ball 10, so that the ball 10 and the contact end of the screw rod 1 can be transmitted more smoothly, the connecting pipe 8 is connected to the inverter 9, an opening 3 is provided in the middle of the nut 2, and the opening 3 is threadedly connected to the screw rod 1;

[0021] In this embodiment, the small fan 15 and the air duct 16 are provided to clean the dust, thereby ensuring the smooth movement of the screw rod 1 and the nut 2.

[0022] Example 2

[0023] refer to Figure 2 to Figure 3 Embodiment 2 is described. This embodiment further describes Embodiment 1, including a connecting portion 17, a limiting groove 12 is provided between the connecting portion 17 and the nut 2, a sealing ring 11 is limited in the limiting groove 12, and the sealing ring 11 is made of rubber material, a thread groove 13 is provided on the nut 2 and the connecting portion 17, and the thread groove 13 on the nut 2 and the connecting portion 17 is locked by a positioning bolt 14;

[0024] In this embodiment, the limiting groove 12 provided between the connecting portion 17 and the nut 2 is convenient for limiting the sealing ring 11, preventing the sealing ring 11 from falling off and facilitating the replacement of the sealing ring 11.

[0025] In specific application, the ball screw pair provided in the device consists of two components, a screw rod 1 and a nut 2, wherein flanges 4 and connecting parts 17 are respectively installed on both side ends of the nut 2, wherein the connecting part 17 is threadedly connected to the nut 2 through positioning bolts 14, and the limiting groove 12 provided between the connecting part 17 and the nut 2 is convenient for limiting the sealing ring 11, preventing the sealing ring 11 from falling off and also facilitating the replacement of the sealing ring 11. In order to ensure the service life of the screw rod 1 and the nut 2, lubricating oil is injected into the ball 10 through the oil inlet nozzle 6, so that the contact end of the ball 10 and the screw rod 1 can be more smoothly transmitted. In order to prevent dust from remaining in the thread gap of the screw rod 1 during rotation, a small fan 15 and an air duct 16 are provided to clean the dust, thereby ensuring the smooth movement of the screw rod 1 and the nut 2, so that it has good smoothness during operation. The function of the inverter 9 on the ball 10 is to output the input rotation direction in the reverse direction, and can also change the output rotation speed and torque.

[0026] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "top", "bottom", "one side", "the other side", "front", "back", "middle part", "inside", "top end", "bottom end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a communication between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A dustproof ball screw pair, characterized in that: The invention comprises a screw rod (1), a nut (2) being threadedly connected to the screw rod (1), a slot (5) being provided at the top of the nut (2), an oil inlet nozzle (6) being provided on the slot (5), and the top of the oil inlet nozzle (6) being sealed by a rubber plug, a flange (4) being installed on one side of the nut (2) and being in an integrated form, a connecting portion (17) being provided on the side of the nut (2) away from the flange (4), an air duct (16) being provided in the connecting portion (17), the air duct (16) being connected to a fan (15), a sealing ring (11) being installed between the connecting portion (17) and the nut (2), an inverter (9) being installed in the nut (2), and a ball (10) being installed on the inverter (9).

2. A dustproof ball screw pair according to claim 1, characterized in that: The oil inlet nozzle (6) is connected to a shunt pipe (7), the shunt pipe (7) is connected to a connecting pipe (8), and the connecting pipe (8) is connected to an inverter (9).

3. The dustproof ball screw pair according to claim 1, characterized in that: An opening (3) is provided in the middle of the nut (2), and the opening (3) is threadedly connected to the screw rod (1).

4. The dustproof ball screw pair according to claim 1, characterized in that: A limiting groove (12) is provided between the connecting portion (17) and the nut (2), the sealing ring (11) is limited in the limiting groove (12), and the sealing ring (11) is made of rubber material.

5. The dustproof ball screw pair according to claim 1, characterized in that: The nut (2) and the connecting portion (17) are both provided with a thread groove (13), and the nut (2) and the thread groove (13) on the connecting portion (17) are locked by a positioning bolt (14).

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