TWM566293U - Improved greasing joint structure of grease gun - Google Patents

Abstract

The present invention relates to an oil-filled joint, which provides a fuel injection pipe connected to a grease gun, and the oil-filled joint can be connected with a grease fitting for injecting butter or lubricating oil, wherein the oil-filled joint comprises: a body with an oil supply passage therein; The body is pivotally provided with a lever handle; a collet is attached to the front end of the body, and the front end of the collet is integrally formed with a plurality of claws, so that the claws have the function of elastic expansion or contraction; a sleeve is sleeved in the collet, and a pair of links are connected between the outer sleeve and the lever handle; by operating the lever handle with a small force, the pair of links will interlock The outer sleeve is relatively moved, so that the inner ring convex portion of the outer sleeve will be bent around the claw portions, so that the claw portions can strongly bite the grease fitting, so that the oil filler joint can firmly engage the grease mouth.

Description

Grease gun oil joint improved structure

The invention relates to the technical field of hand tools, in particular to the oil injection joint of the grease gun, and the utility model provides a grease gun oil pipe connecting the grease nozzle.

Press, the front end of the grease pipe of the general grease gun will be provided with a grease fitting, which is connected to a grease fitting provided by the machine or equipment, and then the grease gun can be operated to produce high-pressure butter or lubricating oil which can be poured into the grease fitting. Inside, allow the internal moving parts of the machine or equipment to be lubricated.

Therefore, the inventor has invented a conventional oil-filled joint 9, as shown in Fig. 11, which is an "An improved grease coupler" in European Patent No. EP2531766, which discloses that a sleeve is pulled backward with a pull handle 91. 92. After the plurality of claws 93 which are separated and pushed and tilted are exposed, the hooks 93 are slightly opened to be incorporated into a grease fitting 96.

Since the hook 93 of the conventional oil filler joint 9 is of a separate type, the sleeve 92 is moved forward by the spring 94 with the spring 94, and is fitted with a push-out portion 951 of the oil passage 95 to allow Each of the hooks 93 is folded to achieve the function of engaging the grease fitting 96.

However, the biting force of each of the hooks 93 of the conventional oil filler joint 9 is maintained only by the return elastic force of the spring 94, so that the bite force is slightly insufficient, which often results in the oil filler joint 9 and the grease fitting 96. The tightness between the two is not good, and it is easy to cause oil leakage during the oiling process.

Therefore, in view of the lack of the conventional oil-filled joint, the novel creator has created an improved structure of the oil-filled joint, so the main purpose of the present invention is to provide an oil-filled joint capable of generating a strong bite force; the secondary purpose of the present invention is to: Provides oil-filled fittings that are easy to assemble.

In order to achieve the above objectives, the present invention uses the following technical means:

The improved structure of the oil-filled joint comprises: a body, wherein the body is provided with an oil supply passage, and the body is externally provided with a lever pull handle, and the body further comprises a top member elastically moving; a collet, wherein the collet is nested in the top jaw, and the front end of the collet extends horizontally and axially to integrally form a plurality of claw portions, and each of the claw portions has an elastic radial displacement of expansion or contraction, and each a front end of the claw portion is provided with a hook; and an outer sleeve is provided with an inner ring protrusion at the front end opening of the outer sleeve, and the outer sleeve is sleeved in the collet, and the outer sleeve and the lever A pair of connecting rods are connected between the handles; by operating the lever handles, the pair of links will interlock the outer sleeve and the collet to move relative to each other, and the inner ring convex portion of the outer sleeve is topped The tops of the respective claw hooks of the collet move the hooks of the respective claws downward and generate a radial occlusion force.

The top of the hook provided by the claw portion is formed with a top inclined surface, and the inside of the hook is formed with a second inner inclined surface, and the inner ring convex portion of the outer sleeve is formed with a first inner inclined surface. The first inner inclined surface of the inner ring convex portion of the outer sleeve tops the top inclined surface of each claw hook of the collet, so that the claw hooks and the second inner inclined surface thereof move downward and generate a radial bite force (P3) to bite and engage the neck of a grease fitting.

The collet is integrally extended from the front end of the sleeve to each of the claw portions, and each of the claw portions is cut by a plurality of dividing grooves, and an outer neck is formed between the sleeve and the hooks of the claw portions. And the outer diameter (∅1) of the outer neck is smaller than the outer diameter (∅2) of the sleeve and the outer diameter (d) of the claw hook.

The inner diameter (D2) of the inner ring convex portion provided in the outer sleeve is between the outer diameter (d) of the claw portion of the collet and the occlusal inner diameter (D1).

The joint of the sleeve of the collet and the claws is formed into an inner neck portion, and the inner diameter of the inner neck portion is slightly larger than the outer diameter of the top jaw member.

The above-described claw length (L2) is between 2/3 and 5/6 times the sleeve length (L1).

The lever handle is inclined at an angle (θ3) backward and is set between 40 degrees and 70 degrees, and each link is inclined at an angle (θ2) and is set between 10 degrees and 30 degrees. Further, the front end of each connecting rod is disposed on two sides of the rear end of the outer sleeve, and the rear end of each connecting rod is connected to one third of the full length (L3) of the lever pulling handle.

The angle (θ1) at which the top oblique direction of the claw hook of the collet is inclined forward is set to 10 to 16 degrees.

When the lever pull handle is moved backward, the outer sleeve is relatively moved by a distance of 1 mm to 5 mm (L5), and then the first inner inclined surface of the inner ring convex portion of the outer sleeve is topped The top slope of the claw hook of the clip.

The nip diameter (D1) formed by the claw hook of the collet is set to be between 5 mm and 8 mm.

According to the above technical means, the present invention can achieve the following effects: 1. The present invention utilizes a spatial arrangement formed by a tilted lever pull handle, a connecting rod and a body to apply a lever principle to enable a small force (P1). The input method is used to operate the lever handle, so that the force exerted by the lever handle is transmitted to the outer sleeve, the claws of the collet, etc. through the connecting rod, so that the claws can generate a strong bite force output. Improve the performance of the bite and seal the mouth of the greased street. 2. The new connecting rod will interlock the outer sleeve and the collet for relative movement, and the first inner inclined surface of the inner ring convex portion of the outer sleeve will top the top inclined surface of each claw hook of the collet The outer loop sleeve and the collet are easily fastened and disengaged, and the operating feel of the lever handle is improved. 3. The collet of the present invention and each of the claw portions are integrally formed, that is, the front end of the collet is divided into six claw portions by six dividing grooves, so that the novel oil-injecting joint can be easily manufactured and assembled as a whole.

First, referring to FIG. 1, FIG. 9 and FIG. 10, the present invention relates to a grease gun oil-filled joint, and the oil-filled joint A is mainly provided at the front end of a grease pipe provided with a grease gun, thereby providing the note. The tubing is smoothly connected to a grease fitting, and the butter or lubricating oil is poured into the grease fitting to allow the moving parts in the machine to be lubricated. Wherein the oil filler joint A comprises:

A body 1, as shown in FIG. 1 and FIG. 2 and FIG. 8, is provided with an oil supply passage 11 in the body 1, and a top member 13 and a set of check valves 14 are disposed inside the oil supply passage 11. The top member 13 is located at the front end of the body 1, and the check valve 14 is composed of a spring and a ball, and the spring is located between the top member 13 and the ball to allow the spring The elastic force provides a distance for the elastic displacement of the top jaw member 13, and the ball is provided to close the oil supply passage 11. Further, a rubber element 131 is disposed in the top member 13, and an oil filling passage 11a is formed inside the rubber member 131, and the oil filling passage 11a is connected to the oil supply passage 11 to be prepared when the oil filler joint A is engaged with the grease fitting. When filling the oil, the top member 13 is actuated such that the rubber member 13 seals the inlet of the grease fitting, allowing the oil passage 11a to engage the passage of the grease fitting. In addition, the pivoting portion 121 outside the body 1 is pivotally connected with a lever pull handle 12 that is inclined rearwardly (θ3).

A collet 2, as shown in Fig. 2 to Fig. 4 and Fig. 8, is the sleeve 2 inserted into the top piece 13, and the front end of the collet 2 is horizontally extended to form a ring-shaped arrangement. Each of the claw portions 22, that is, the plurality of claw portions 22 are formed by the plurality of dividing grooves 20, so that the claw portions 22 have an elastic radial displacement of expansion or contraction, and a hook 221 is provided at the front end of each of the claw portions 22, Each of the hooks 221 forms a nip inner diameter (D1), and the top of the hook 221 is formed with a top slanting surface 222, the top slanting surface 222 is inclined forward (θ1), and each of the top slanting surfaces 222 forms an outer diameter ( d), and the top bevel 222 provides a function that is easily snapped or disengaged by the inner ring projection 31 of the outer sleeve 3. In addition, a second inner inclined surface 222 is formed inside the hook 221 . Further, the collet 2 is integrally extended from the front end of a sleeve 21 to the plurality of claw portions 22, and the plurality of claw portions 22 are preferably formed by six divided grooves 20 and formed in a uniform circular arrangement. And an outer neck portion 23 is formed between the sleeve 21 and the hooks 221 of the claw portions 22, and the outer diameter (∅1) of the outer neck portion 23 is smaller than the outer diameter of the sleeve 21 (∅2) And an outer diameter (d) to form an inner neck portion 211. Further, the joint of the sleeve 21 of the collet 2 and each of the claw portions 22 is shaped as the inner neck portion 211, and the inner diameter of the inner neck portion 211 is slightly larger than the outer diameter of the top jaw member 13 to provide the top cymbal The piece 13 is nested in the inner neck portion 211; in particular, the occlusal inner diameter (D1) formed by the claw portion 22 of the collet 2 of the collet 2 must be slightly smaller than the outer diameter of the neck portion 96 of the grease fitting 96, that is, the occlusion The inner diameter (D1) may be set to be between 5 mm and 8 mm, but the inner diameter (D1) of the nip is preferably set to 6 mm to 7.5 mm, and the function of providing the bite to engage the grease fitting 96 is provided. Further, the length (L2) of the length (L2) of the claw portion 22 is between 2/3 and 5/6 times the length (L1) of the sleeve 21, and provides a urging effect of better occlusion. Further, the inclination angle (θ1) of the top inclined surface of the hook portion 221 of the claw portion 22 of the collet 2 is set to 10 to 16 degrees, thereby providing a function of being easily and easily detached or disengaged by the inner ring convex portion 31 of the outer sleeve 3. By. and

An outer sleeve 3, as shown in FIG. 1, FIG. 2, FIG. 5, and FIG. 10, is provided with an inner ring convex portion 31 at the front end opening of the outer sleeve 3, and the inner ring convex portion 31 is further provided with a The first inner inclined surface 311 is further sleeved on the outer side of the collet 2, and a pair of inclined connecting rods 32 are connected between the outer sleeve 3 and the lever pull handle 12. Further, the inner diameter (D2) of the inner ring convex portion 31 is between the outer diameter (d) of the claw portion 22 of the collet 2 and the occlusal inner diameter (D1). Further, a preferred arrangement between the pair of links 32, the lever handle 12 and the body 1 is as shown in FIGS. 5 and 7. The angle of inclination (θ3) of the lever handle 12 is relative to the body 1 The axis is set to 40 degrees to 70 degrees, and the inclination angle (θ2) of the pair of links 32 is set to 10 degrees to 30 degrees with respect to the horizontal axis of the body 1, and one end of each of the links 31 is attached to the outer sleeve. 3 on the two sides of the rear end, and the other end of each link 31 is connected at a length (L4) of one third of the full length (L3) of the lever handle 12, thereby providing better labor-saving operation. A large driving force is generated between the outer sleeve 3 and the collet 2.

The above-mentioned various components constitute the present oil-filled joint A. In the normal state, that is, when the oil-filled joint A is not used, as shown in FIG. 5, FIG. 7 and FIG. 8, the lever pull handle 13 usually Located at an angle (θ3), the pair of links 32 will be at an angle (θ2), at which point the jaws 22 of the collet 2 will be relaxed in the interior of the outer sleeve 4. Because each of the claw portions 32 has an elastic outer expansion and expansion function in the inner space, the occlusal inner diameter (D1) of each of the claw portions 32 can be slightly enlarged, and the front end of the grease fitting 96 is fitted into each claw portion. Inside the 32, the claws 22 can be incorporated into the grease fitting 96.

When the oiling operation is to be performed, as shown in Fig. 6, Fig. 7, Fig. 9, and Fig. 10, when the claw portion 22 of the collet 2 in the front end of the present oil filler joint A is engaged with the grease fitting 96, A small biasing force (P1) is applied to rotate the lever handle 12, and the lever handle 12 is pivoted to the horizontal position, and the pair of links 32 are also rotated horizontally and driven. The outer sleeve 3 and the collet 2 are relatively horizontally moved, and the moving distance is approximately a distance length (L5) of 1 mm to 5 mm, so that the first inner inclined surface 311 of the inner ring convex portion 31 of the outer sleeve 3 is The top cymbal touches the top slope 222 of the hook 221 of each of the claw portions 22 of the collet 2, thereby generating an oblique force (P2) and a component force (P3) thereof, and the component force (P3) is a bite force for each claw The second inner inclined surface 223 of the portion 22 of the hook 22 moves downward and strongly grips the neck 961 of the grease fitting 96, while the rubber member in the top member 13 is moved to seal the oil inlet 962 of the grease fitting 96. This allows the user to operate the grease gun with both hands for oiling operations. In particular, the length of the distance (L5) is preferably from 1 mm to 2.5 mm.

If the lever pull handle 13 is rotated forward before the oil filling operation of the grease fitting is completed, the lever pull handle 13 will interlock the pair of links 32 to drive the outer ring sleeve 3 to move relative to each other. The jaws 13 and the claws 22 of the collet 2 are returned to the starting position, at which point the oil filler joint A can be withdrawn from the grease fitting 96.

In summary, the present invention relates to an improved structure of a grease gun oiling joint, the above angle θ1, angle θ2, angle θ3, outer diameter d, outer diameter ∅1, outer diameter ∅2, occlusal inner diameter D1, inner diameter The size range of D2, length L1, length L2, length L3, length L4, length L5, etc. can be adjusted according to the point of application. Moreover, the structure of the present embodiment has not been seen in various books or publicly used, and it is in conformity with the requirements of the patent application, and the 钧局明鉴, as soon as the patent is granted, is a prayer;

In the above, the above is the specific embodiment of the case and the technical principles applied. If the changes made in the concept of the case have not exceeded the spirit of the manual and the drawings, All should be given to Chen Ming within the scope of this case.

[This new type]
A‧‧‧ oil joint
1‧‧‧ Ontology
11, 11a‧‧‧ oil supply channel
12‧‧‧Leverage handle
121‧‧‧ pivot
13‧‧‧Top conditions
131‧‧‧Rubber components
14‧‧‧Check valve
2‧‧‧ Collet
20‧‧‧Segmentation slot
21‧‧‧Sleeve
211‧‧‧neck
22‧‧‧ claws
221‧‧‧ hook
222‧‧‧Top slope
223‧‧‧Second inner bevel
23‧‧‧ outer neck
3‧‧‧Outer sleeve
31‧‧‧ Inner ring convex
311‧‧‧First inner bevel
32‧‧‧ linkages θ1, θ2, θ3‧‧‧ angle
d, ∅ 1, ∅ 2‧‧‧ OD
D1‧‧‧Bitting inner diameter
D2‧‧‧Down
L1, L2, L3, L4, L5‧‧‧ length
P1‧‧‧ force
P2‧‧‧ oblique force
P3‧‧‧ radial bite force
[知知]
9‧‧‧Knowledge oil filler
91‧‧‧ handle
92‧‧‧ sleeve
93‧‧‧ claws
94‧‧‧ Spring
95‧‧‧ oil channel
951‧‧‧Pushing Department
96‧‧‧ butter mouth
961‧‧‧ neck
962‧‧‧Inlet

Figure 1: is an external view of the new oil-filled joint. Figure 2: An exploded view of the new oil filler joint. Figure 3: Appearance of the new collet element. Figure 4 is a cross-sectional view of the novel collet element. Figure 5: is a side view of the new oil filler joint under normal conditions. Figure 6: is a side view of the new oil filler joint that has been snapped into the grease fitting. Figure 7: This is a simplified diagram of the combination of the body, lever handle, connecting rod, etc. Figure 8 is a cross-sectional view of the new oil-filled joint under normal conditions. Figure 9 is a schematic view of the new oil-filled joint that has been snapped into the grease fitting. Figure 10 is a partial enlarged view of the novel Figure 10 of the present invention. Figure 11 is a combined cross-sectional view of a conventional oil filler joint.

Claims (10)

The improved structure of the grease gun oiling joint comprises: a body, wherein the body is provided with an oil supply passage, and the body is externally provided with a lever pull handle, and the body further comprises a top member elastically moving; a collet, the collet is sleeved in the top jaw, and the front end of the collet extends horizontally axially to integrally form a plurality of claws, and each of the claws has an elastic radial displacement of expansion or contraction, and a front end of each claw portion is provided with a hook; and an outer sleeve is provided with an inner ring protrusion at the front end opening of the outer sleeve, and the outer sleeve is sleeved in the collet, and the outer sleeve, Connecting a pair of connecting rods between the lever handles; by operating the lever pulling handle, the pair of connecting rods will interlock the outer sleeve and the collet to move relative to each other, thereby benefiting the inner ring convex portion of the outer sleeve The tops of the respective claw hooks of the collet move the hooks of the respective claw portions downward and generate a radial occlusion force. The improved structure of the grease gun oil joint according to claim 1, wherein a top surface of the hook is formed with a top inclined surface, and an inner portion of the hook forms a second inner inclined surface, and the inner portion of the outer sleeve is formed. The annular convex portion is formed with a first inner inclined surface, and the first inner inclined surface of the inner ring convex portion of the outer sleeve tops the top inclined surface of each claw hook of the collet, so that the claw portions and the first claw portion thereof The inner inner bevel moves downward and creates a radial bite force (P3) to grip and engage the neck of a grease fitting. The improved structure of the grease gun oiling joint according to claim 1 or 2, wherein the collet is integrally extended from the front end of the sleeve to each of the claw portions, and each of the claw portions is cut by a plurality of dividing grooves, and the sleeve is further An outer neck is formed between the barrel and the hooks of the claws, and an outer diameter (∅1) of the outer neck is smaller than an outer diameter (∅2) of the sleeve and an outer diameter (d) of the claw hook . The improved structure of the grease gun oiling joint according to claim 3, wherein the inner diameter (D2) of the inner ring convex portion of the outer sleeve is larger than the outer diameter (d) of the claw portion of the collet and its occlusion Between the inner diameter (D1) size. The improved structure of the grease gun oiling joint according to claim 4, wherein the joint of the sleeve of the collet and each of the claw portions is formed into an inner neck portion, and the inner diameter of the inner neck portion is slightly larger than the outer diameter of the top jaw member. . The improved structure of the grease gun oil filler joint according to claim 4, wherein the length (L2) of the claw portion is between 2/3 and 5/6 times the length of the sleeve (L1). The improved structure of the grease gun oiling joint according to claim 4, wherein the lever handle is inclined at an angle (θ3) backward and is set between 40 degrees and 70 degrees, and each link is inclined at an angle backward ( Θ2) is set between 10 degrees and 30 degrees, and the front end of each link is connected to two sides of the rear end of the outer sleeve, and the rear end of each link is connected to the full length of the lever handle (L3) ) One third below. The improved structure of the grease gun oil filler joint according to claim 4, wherein an angle (θ1) at which the slanting angle of the claw hook of the collet is inclined to the front is set to 10 to 16 degrees. The improved structure of the grease gun oiling joint according to claim 4, wherein the outer sleeve is relatively moved by a distance of 1 mm to 5 mm (L5) when the lever pull handle is moved backward, and the outer sleeve is The first inner bevel of the inner ring projection tops the top bevel of the claw hook of the collet. The modified structure of the grease gun oiling joint according to claim 4, wherein the inner diameter (D1) formed by the claw hook of the collet is set to be between 5 mm and 8 mm.