CN114233840A

CN114233840A - Self-lubricating connecting device

Info

Publication number: CN114233840A
Application number: CN202111588553.XA
Authority: CN
Inventors: 陈军; 李奎峰; 冯斌
Original assignee: Suzhou Yingtemo Automobile Technology Co ltd
Current assignee: Suzhou Yingtemo Automobile Technology Co ltd
Priority date: 2021-12-23
Filing date: 2021-12-23
Publication date: 2022-03-25
Anticipated expiration: 2041-12-23
Also published as: CN114233840B

Abstract

The invention discloses a self-lubricating connecting device, which comprises: the screw rod, the nut, the oil filling box, the oil filling rod and the driving piece are sleeved on the screw rod, and the nut is in threaded connection with the screw rod; the oiling box is arranged on the outer ring surface of the nut, a first through hole and a second through hole which are communicated with the oiling box are formed in the nut, and the first through hole and the second through hole are arranged at intervals along the axial direction of the screw; the oiling rod is a threaded rod, is parallel to the threaded rod and is rotatably arranged in the oiling box, and one end of the oiling rod is exposed out of the oiling box; the driving piece is coaxially and fixedly connected with one end of the oiling rod and drives the oiling rod to rotate. Because the grease is recycled and does not run off, the screw rod can be self-lubricated, can be used for the whole life in the service life of the lubricating grease after being installed once, does not need additional maintenance, really realizes maintenance-free, and has low cost and easy installation.

Description

Self-lubricating connecting device

Technical Field

The embodiment of the invention relates to the field of connecting tools, in particular to a self-lubricating connecting device.

Background

The screw is the most commonly used transmission element on tool machinery and precision machinery, and its main function is to convert rotary motion into linear motion or convert torque into axial repeated acting force, and has the characteristics of high precision, reversibility and high efficiency.

Due to the characteristics of screw transmission, lubricating grease is required to be used for lubricating a screw regularly, an oil tank is generally added on the screw directly in the conventional screw lubrication, the lubricating grease in the oil tank slowly flows onto the screw, the lubricating manner easily causes the loss of the lubricating grease, pollutes the environment, and the lubricating grease is required to be supplemented manually and regularly, which is time-consuming and labor-consuming. And lead screw drive parts are often damaged due to inadequate maintenance.

Disclosure of Invention

The embodiment of the invention aims to provide a self-lubricating connecting device, which enables a lead screw to be self-lubricated, can be used for the whole life within the service life of lubricating grease after being installed once, does not need additional maintenance, really realizes maintenance-free, and has low cost and easy installation.

To solve the above technical problem, an embodiment of the present invention provides a self-lubricating connecting device including:

a screw;

the nut is sleeved on the screw rod and is in threaded connection with the screw rod;

the oil filling box is arranged on the outer ring surface of the nut, the nut is provided with a first through hole and a second through hole which are communicated with the oil filling box, and the first through hole and the second through hole are arranged at intervals along the axial direction of the screw rod;

the oil adding rod is a threaded rod, is parallel to the threaded rod and is rotatably arranged in the oil adding box, and one end of the oil adding rod is exposed out of the oil adding box;

the driving piece is fixedly connected with the end of the oil filling rod in a coaxial mode and drives the oil filling rod to rotate.

Compared with the prior art, the self-lubricating connecting device comprises the following components: add the oil box and add the fuel pole, it can rotate in adding the oil box to add the fuel pole to set up on the nut and add the first through-hole and the second through-hole of oil box intercommunication, and first through-hole and second through-hole set up along the axial direction interval of screw rod, consequently can put into the oil box with lubricating grease when the installation, it rotates in adding the oil box to add the fuel pole, and grease in adding the oil box is crowded between nut and the screw rod through one in first through-hole and the second through-hole. Through the relative rotation between nut and the screw rod, get back to in the refueling box unnecessary grease through another in first through-hole and the second through-hole, through the mode circulation reciprocal for the grease can circulate, avoids unnecessary grease to run off, because the grease is cyclic utilization, does not run off, thereby makes the lead screw can self-lubricate, and once the installation can be used throughout the life-span of lubricating grease, does not need extra maintenance, really realizes non-maintaining, low cost moreover, easily installation.

In one embodiment, the drive member includes a drive wheel that abuts and is friction fit with the screw.

In one embodiment, the driver further comprises: and the flexible ring is coaxially fixed on the outer ring surface of the driving wheel, abuts against the screw rod and is in friction fit with the screw rod.

In one embodiment, the flexible ring is a rubber ring or a silicone ring.

In one embodiment, the first through hole and the second through hole are respectively communicated with two ends of the refueling box in the axial direction.

In an embodiment, the first through hole and the second through hole each extend in a radial direction of the nut.

In one embodiment, the oil filling box is further provided with an oil filling port, the oil filling port is communicated with the threaded surface of the oil filling rod, and the oil filling port can be opened or closed operatively.

In one embodiment, the oiling rod and the oiling box are matched in shape and size.

In one embodiment, the refueling cartridge includes:

the box body is arranged on the outer ring surface of the nut, the oil adding rod is rotatably arranged in the box body, and the box body is provided with an opening along the axial direction of the screw rod;

the lid, the lid set up in on the box body, and be used for opening or seal the opening, follow on the lid the axial direction of screw rod has the connecting hole, refuel the pole with connecting hole rotatable coupling, just refuel the pole expose in the outer one end of refuel box exposes outside the lid.

In an embodiment, the self-lubricating connection device further comprises: and the connecting plate is fixedly connected with the nut.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.

FIG. 1 is a schematic structural view of a self-lubricating coupling device in an embodiment of the present invention;

FIG. 2 is a top view of a self-lubricating coupling device in an embodiment of the present invention;

fig. 3 is a cross-sectional view at a-a in fig. 2.

Description of reference numerals:

1. a screw; 2. a nut; 21. an outer annular surface of the nut; 22. a first through hole; 23. a second through hole; 3. an oil adding box; 31. a box body; 311. blind holes; 32. a box cover; 321. connecting holes; 33. an oil filler; 4. adding an oil rod; 5. a drive member; 51. a drive wheel; 52. a flexible loop; 6. a connecting plate; 61. switching the hole; 7. and (7) a plug.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that numerous technical details are set forth in order to provide a better understanding of the present application in various embodiments of the present invention. However, the technical solution claimed in the present application can be implemented without these technical details and various changes and modifications based on the following embodiments.

In the following description, for the purposes of illustrating various disclosed embodiments, certain specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. One skilled in the relevant art will recognize, however, that the embodiments may be practiced without one or more of the specific details. In other instances, well-known devices, structures and techniques associated with this application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

Throughout the specification and claims, the word "comprise" and variations thereof, such as "comprises" and "comprising," are to be understood as an open, inclusive meaning, i.e., as being interpreted to mean "including, but not limited to," unless the context requires otherwise.

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings in order to more clearly understand the objects, features and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but are merely intended to illustrate the spirit of the technical solution of the present invention.

Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

As used in this specification and the appended claims, the singular forms "a", "an", and "the" include plural referents unless the context clearly dictates otherwise. It should be noted that the term "or" is generally employed in its sense including "and/or" unless the context clearly dictates otherwise.

In the following description, for the purposes of clearly illustrating the structure and operation of the present invention, directional terms will be used, but terms such as "front", "rear", "left", "right", "outer", "inner", "outer", "inward", "upper", "lower", etc. should be construed as words of convenience and should not be construed as limiting terms.

An embodiment self-lubricating connection device of the present invention is described hereinafter with reference to the accompanying drawings, as shown in fig. 1 to 3, comprising: screw rod 1, the nut 2, refuel box 3, refuel pole 4 and driving piece 5, wherein, 2 covers of nut are established on screw rod 1, and with 1 threaded connection of screw rod, refuel box 3 sets up on the outer anchor ring 21 of nut 2, set up first through-hole 22 and the second through-hole 23 all with refuel 3 intercommunications of box on the nut 2, first through-hole 22 and second through-hole 23 set up along screw rod 1's axis direction interval, refuel pole 4 is the threaded rod, refuel pole 4 is on a parallel with the axis setting of screw rod 1, and rotationally set up in refuel box 3, refuel 4 one end of pole exposes and refuel 3 outer and 5 coaxial fixed connection of driving piece, 5 drives of driving piece and refuels pole 4 and rotates.

Compared with the prior art, the self-lubricating connecting device comprises the following components: add oil box 3 and add oil pole 4, add oil pole 4 and can add the oil box 3 internal rotation, and set up first through-hole 22 and the second through-hole 23 with adding oil box 3 intercommunication on the nut 2, and first through-hole 22 and second through-hole 23 set up along the axial direction interval of screw rod 1, therefore can put into adding oil box 3 lubricating grease when the installation, add oil pole 4 internal rotation in adding oil box 3, it squeezes into between nut 2 and screw rod 1 through one of first through-hole 22 and second through-hole 23 to add oil box 3 internal grease, through the relative rotation between nut 2 and the screw rod 1, get back to adding oil box 3 through another one of first through-hole 22 and second through-hole 23 unnecessary grease, through the mode circulation reciprocal, make the grease can circulate, avoid unnecessary grease to run off, because grease is cyclic utilization, do not run off, thereby make the lead screw can self-lubricate, the grease can be used for the whole life in the service life of the grease by one-time installation, no extra maintenance is needed, the maintenance is really avoided, the cost is low, and the installation is easy.

Specifically, as shown in fig. 3, it is preferable that the through holes of the first through hole 22 and the second through hole 23 in the fueling box 3 are disposed away from each other as far as possible, and specifically, the first through hole 22 and the second through hole 23 are respectively communicated with both ends of the fueling box 3 in the axial direction, but in some embodiments, the first through hole 22 and the second through hole 23 may not be respectively communicated with both ends of the fueling box 3 in the axial direction, but may be spaced relatively close to each other. It is further preferable that the first through hole 22 and the second through hole 23 are formed to extend in the radial direction of the nut 2.

In addition, as shown in fig. 1 to fig. 3, in the present embodiment, the driving member 5 includes a driving wheel 51, the driving wheel 51 abuts against and is in friction fit with the screw 1, and when the screw 1 rotates, the screw 1 drives the driving wheel 51 to rotate. Because there is a large amount of lubricating grease in the case 3 that adds, consequently add the pole 4 that the oil is rotatory very light, the load of driving piece 5 is very light, relies on the frictional force between drive wheel 51 and the screw rod 1, can drive completely and add the pole 4 and rotate to realize self-lubricating connecting device's self-actuation.

Of course, in some embodiments, the driving member 5 may also be a small motor, and an output shaft of the small motor is coaxially and fixedly connected with the fueling rod 4 and can also drive the fueling rod 4 to rotate.

In addition, preferably, in some embodiments, in order to reduce the damage to the screw 1 when the driving wheel 51 rubs against the screw 1, as shown in fig. 1 and 3, the driving member 5 further includes: a flexible ring 52 coaxially fixed on the outer circumferential surface of the driving wheel 51, the flexible ring 52 abutting and frictionally engaging the screw 1. The flexible ring 52 can not only increase the friction between the screw 1 and the driver 5, but also reduce the damage to the screw 1 caused by the friction movement of the driver 5 relative to the screw 1. Specifically, the flexible ring 52 may be a rubber ring or a silicone ring.

As shown in fig. 3, when the screw 1 rotates in the arrow direction, the screw 1 drives the driving wheel 51 to rotate reversely, the driving rod drives the grease in the oiling box 3 to move downwards, the grease enters between the screw 1 and the nut 2 from the second through hole 23, the rotation of the screw 1 pushes the grease upwards, and the redundant grease enters into the oiling box 3 from the first through hole 22, so that the grease can be recycled. The grease can be used for the whole life in the service life of the grease by one-time installation, does not need additional maintenance, really realizes maintenance-free, and has low cost, easy installation and no need of adopting an additional driving device.

As shown in fig. 1 and 3, the fuel filler box 3 is further provided with a fuel filler opening 33, the fuel filler opening 33 is communicated with the threaded surface of the fuel filler rod 4, the fuel filler opening 33 can be opened or closed, and the fuel filler opening 33 can be opened or closed by a plug 7. Specifically, as shown in fig. 3, the filler opening 33 is formed extending in the radial direction of the filler box 3, and the filler opening 33 is located at an end of the filler box 3 remote from the driver 5.

Add between fuel rod 4 and the refuel box 3 shape and size all cooperate, and the external diameter of refueling rod 4 is about the same with the internal diameter of refuel box 3 promptly, can adopt clearance fit, adds fuel rod 4 like this and can be as much as possible with crowded into between screw rod 1 and the nut 2 with the grease in the refuel box 3.

Specifically, as shown in fig. 1 and 3, the oiling box 3 includes: a box body 31 and a box cover 32, wherein the box body 31 is arranged on the outer ring surface 21 of the nut 2, the oil adding rod 4 is rotatably arranged in the box body 31, and the box cover 32 is provided with an opening along the axial direction of the screw rod 1; the box cover 32 is arranged on the box body 31 and used for opening or sealing the opening, the box cover 32 can be connected with the box body 31 through screws, a sealing ring can be arranged between the box cover 32 and the box body 31, a connecting hole 321 is formed in the box cover 32 along the axial direction of the screw rod 1, the oil filling rod is rotatably connected with the connecting hole 321, and one end, exposed out of the oil filling box, of the oil filling pipe is exposed out of the box cover 32. A bearing may be further provided in the connection hole 321 to facilitate rotation of the fueling rod 4, and the fueling rod 4 may have a screw thread only in a portion inside the fueling box 3.

The fueling rod 4 is rotatably connected to the bottom of the box 31, and specifically, as shown in fig. 3, the bottom of the box 31 is provided with a blind hole 311, and one end of the fueling rod 4 is rotatably inserted into the blind hole 311.

In addition, as shown in fig. 1 and 2, preferably, in order to facilitate the connection of the nut 2 with an external device, the self-lubricating connection device further includes a connection plate 6 fixedly connected with the nut 2, the connection plate 6 is coaxially and fixedly connected with the outer circumferential surface 21 of the nut 2, and a plurality of transfer holes 61 are formed in the connection plate 6, so that the nut 2 can be connected with the external device through the connection plate 6. Thereby can drive external device reciprocating motion through self-lubricating connecting device. Of course, in some embodiments, the nut 2 may also be directly connected to an external device.

While the preferred embodiments of the present invention have been described in detail above, it should be understood that aspects of the embodiments can be modified, if necessary, to employ aspects, features and concepts of the various patents, applications and publications to provide yet further embodiments.

These and other changes can be made to the embodiments in light of the above detailed description. In general, in the claims, the terms used should not be construed to be limited to the specific embodiments disclosed in the specification and the claims, but should be construed to include all possible embodiments along with the full scope of equivalents to which such claims are entitled.

It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples for carrying out the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in practice.

Claims

1. A self-lubricating connection, characterized in that it comprises:

a screw;

2. The self-lubricating connection device of claim 1, wherein the drive member includes a drive wheel that abuts and frictionally engages the screw.

3. The self-lubricating connection device of claim 2, wherein the driver further comprises: and the flexible ring is coaxially fixed on the outer ring surface of the driving wheel, abuts against the screw rod and is in friction fit with the screw rod.

4. The self-lubricating connection device of claim 3, wherein the flexible ring is a rubber ring or a silicone ring.

5. The self-lubricating connection device of claim 1, wherein the first through hole and the second through hole communicate with both ends of the cartridge in an axial direction, respectively.

6. The self-lubricating connection device of claim 1, wherein the first and second through holes each extend in a radial direction of the nut.

7. The self-lubricating connection of claim 1, wherein the refueling cartridge further defines a refueling port in communication with the threaded surface of the refueling rod, the refueling port being operable to be opened or closed.

8. The self-lubricating connection device of claim 1, wherein the oiling rod and the oiling box are both shaped and sized.

9. The self-lubricating connection device of claim 1, wherein the refueling cartridge comprises:

10. The self-lubricating connection device of claim 1, further comprising: and the connecting plate is fixedly connected with the nut.