Oil nozzle connecting piece with long service life

Abstract

The utility model discloses an oil nozzle connecting piece with long service life, which belongs to the field of hardware fittings and comprises a body with a hollow cavity, the body is in threaded connection with a connector, a plug is arranged on the connector in a sliding manner, one end of the plug far away from the connector is provided with a bulge capable of sealing the cavity, and the bulge is connected with the hollow cavity. A spring enabling the protrusion to keep abutting against the body is arranged between the connector and the plug, the plug and the connector are connected in a sliding mode, so that when the sharp-nose oil gun abuts against the plug, the plug can only move in the axial direction, and the situation that due to the fact that the plug is uneven in stress, deviation is caused, and finally the plug cannot reset is avoided.

Description

Technical Field

[0001] This utility model discloses a long-life oil nozzle connector, belonging to the field of hardware accessories. Background Technology

[0002] Grease fitting, used to connect to bearing housing, for adding grease to the internal bearing from the outside.

[0003] When using existing nozzle connectors, uneven force is often applied when the nozzle is pressed against the nozzle, causing the plug at the filling hole to tilt or the internal spring to tilt, resulting in the plug being unable to return to its original position and causing damage to the nozzle connector.

[0004] A new solution is proposed to supplement the nozzle connector. Utility Model Content

[0005] The purpose of this invention is to provide a long-life nozzle connector in order to solve the above-mentioned problems.

[0006] This utility model achieves the above-mentioned objective through the following technical solution: a long-life oil nozzle connector, comprising a body having a hollow cavity, a connector threadedly connected to the body, a plug slidably disposed on the connector, a protrusion for sealing the cavity being disposed at the end of the plug away from the connector, and a spring disposed between the connector and the plug to keep the protrusion abutting against the body.

[0007] Preferably, the connector has a wave-shaped guide groove on its inner circumference, and the distances from adjacent wave crests of the guide groove to the end of the connector are not equal.

[0008] Preferably, the plug is threaded with a ball-head plunger for sliding within the guide groove.

[0009] Preferably, the connector is provided with a mounting groove for holding the spring in the direction of the plug axis.

[0010] Preferably, the connection between the connector and the plug is provided with an inclined surface facing inwards towards the inside of the connector.

[0011] Preferably, the plug is provided with an annular lubrication groove, the lubrication groove can travel to intersect with the guide groove.

[0012] Preferably, the body has a chamfered surface facing the plug on the side away from the plug abutment.

[0013] Compared with the prior art, the beneficial effects of this utility model are: by sliding the plug and the connector together, when the nozzle oil gun comes into contact with the plug, the plug can only move along the axial direction, thus avoiding the situation where the plug cannot be reset due to uneven force on the plug. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of a long-life oil nozzle connector according to the present invention;

[0015] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0016] Figure 3 This is a cross-sectional structural diagram of the present invention.

[0017] Attached reference numerals: 1. Body; 2. Connector; 21. Sliding groove; 22. Oil outlet groove; 23. Guide groove; 3. Plug; 31. Ball head plunger; 32. Lubrication groove; 4. Spring. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the present utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0019] like Figure 1 , Figure 2 , Figure 3 As shown, a long-life oil nozzle connector includes a body 1 with a hollow cavity, a connector 2 threadedly connected to the body 1, a plug 3 slidably disposed on the connector 2, a protrusion for sealing the cavity provided at the end of the plug 3 away from the connector 2, and a spring 4 disposed between the connector 2 and the plug 3 to keep the protrusion abutting against the body 1.

[0020] Based on existing technology, this product changes the plug 3 from a spherical shape to a matchstick shape. Part of the plug 3 is inserted into the cavity in the middle of the connector 2 and slides. Furthermore, an oil outlet groove 22 is provided around the connector 2, transforming the conventional oil outlet in the middle of the connector 2 into a sliding groove 21 supplying the plug 3. This allows grease to pass smoothly through the grease nozzle connector while avoiding uneven force distribution during operation of the nozzle, which can cause the plug 3 to shift or the spring 4 to deform or bend. Compared to existing products, this product has a longer lifespan, and the risk of damage due to operation is almost eliminated.

[0021] When using this product, the original grease fitting must be removed first, and then this product should be installed. After installation, the nozzle grease gun should be pressed against the plug 3, causing the plug 3 to retract into the body 1, thus eliminating the sealing effect of the plug 3 on the cavity of the body 1. At this time, the nozzle grease gun can be pressed, causing the grease inside the nozzle grease gun to be forced into the grease fitting and finally enter the equipment for lubrication. After the filling is completed, simply remove the grease gun. Under the action of the spring 4, the plug 3 will reset and seal the cavity of the body 1 from the outside.

[0022] To assemble this product, first place the spring 4 on the surface of the plug 3, then press the plug 3 into the inside of the connector 2, and then screw the connector 2 into the body 1 to complete the assembly.

[0023] When using this product, the operator needs to press against the plug 3, which requires applying the force of the compression spring 4 to the plug 3 while simultaneously squeezing the nozzle for refueling. This is quite inconvenient. To address this, the product has been upgraded. A wave-shaped guide groove 23 is provided around the inside of the connector 2. The distance from adjacent peaks of the guide groove 23 to the end of the connector 2 is unequal. The plug 3 is threaded with a ball-head plunger 31 that slides within the guide groove 23. This allows the product to be used by first pressing the nozzle against the plug 3, causing the plug 3 to slide to the trough of the guide groove 23, and then releasing the nozzle. At this point, the nozzle is supported by the guide groove 23. The function of 3 causes the plug 3 to rotate. After the plug 3 rotates, it causes the ball head plunger 31 to enter the adjacent crest. However, since the distances from the adjacent crests to the end of the connector 2 are not equal, the movement distance of the plug 3 is limited. Because the reset distance of the plug 3 is shortened, the plug 3 cannot completely seal the cavity of the body 1. At this time, oil can be added by squeezing the nozzle oil gun. Since it is not necessary to press the plug 3 with the nozzle oil gun while adding oil, the operation is more convenient. After the oiling is completed, simply push the plug 3 again to make the plug 3 rotate again, so that the plug 3 can rotate to the point where it can press against the crest of the body 1, thus achieving the effect of sealing the cavity of the body 1.

[0024] The connector 2 is provided with a mounting groove for keeping the spring 4 in the axial direction of the plug 3. The design of the mounting groove makes the spring 4 more stable during installation and prevents the spring 4 from tipping over during installation.

[0025] The connection between connector 2 and plug 3 is provided with an inclined surface facing inwards from connector 2. The inclined surface allows grease to move into the sliding groove 21 on connector 2 when it moves, thereby better lubricating plug 3 and connector 2 and avoiding excessive friction that may cause jamming when adding grease. Plug 3 is provided with an annular lubrication groove 32. The lubrication groove 32 can travel to intersect with guide groove 23. The design of the annular lubrication groove 32 can better drive grease into the sliding groove 21, thereby better playing a lubricating role.

[0026] The main body 1 has a reverse side facing the plug 3 on the side away from the contact point. The reverse side can guide the nozzle during refueling, thereby better pressing against the plug 3.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0028] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A long-life oil nipple connection comprising a body having a hollow cavity, characterized by, The body is threadedly connected with a connector, a plug is slidably arranged on the connector, one end of the plug away from the connector is provided with a convex capable of closing a cavity, a spring is arranged between the connector and the plug to keep the convex abutting against the body.

2. A long-life oil nozzle connection according to claim 1, characterised in that: A wave-shaped guide groove is arranged around the inside of the connector, the distance from the adjacent wave crest of the guide groove to the end of the connector is not equal.

3. A long-life oil nozzle connection according to claim 2, characterised in that: A ball head plunger for sliding in the guide groove is threadedly connected on the plug.

4. A long-life oil nozzle connection according to claim 3, characterised in that: An installation groove for keeping the spring in the axial direction of the plug is arranged on the connector.

5. A long-life oil nozzle connection according to claim 3, characterised in that: An inclined surface is arranged at the joint of the connector and the plug, which is towards the inside of the connector.

6. A long-life oil nozzle connection according to claim 5, characterised in that: An annular lubricating groove is arranged on the plug, the lubricating groove can reach the intersection with the guide groove.

7. A long-life oil nozzle connection according to claim 1, characterized in that: A reverse surface is arranged on the body towards the plug at the side away from the abutting place of the plug.

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