Grease gun lubricating grease filling tool

Abstract

The utility model relates to the technical field of maintenance tool equipment, in particular to a grease gun lubricating grease filling tool which comprises an outer cylinder, an inner cylinder, an inner cylinder baffle and a piston assembly, a filling open groove is formed in the side face of the inner cylinder, and the inner cylinder slides along the central axis of the outer cylinder relative to the outer cylinder; the piston assembly has two connection states: as the slidable inner cylinder is arranged in the outer cylinder, when a tool needs to be filled with lubricating grease, the inner cylinder is pushed out of the outer cylinder through the piston assembly, and after the inner cylinder is filled with the lubricating grease and the inner cylinder is reset, the lubricating grease is pushed out of the inner cylinder through the piston assembly; according to the lubricating grease filling tool, filling of lubricating grease is achieved, the filling effect is good, too many gaps and bubbles cannot be generated, waste caused by adhesion of the lubricating grease is reduced, other objects are not prone to being contaminated, and by means of the tool, labor intensity can be lowered, and working efficiency and quality can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of maintenance tool equipment, in particular to a grease filling tool for a grease gun. Background Art

[0002] At present, well stations frequently use grease guns to maintain valves or pump bearings and transmission mechanisms. The daily used grease is packaged in tubes, small barrels and bags. Since the grease is a viscous fat paste, it is very inconvenient to fill the grease into the grease gun. Screwdrivers or small wood chips are often used to fill the barrel, but they often adhere to the barrel mouth and are difficult to fill. The existing problems are: first, it is not fully filled, there are many gaps, and a lot of air is mixed, which leads to failure of operation during grease injection and failure to squeeze out grease. Second, during the filling process, it is easy to stick to gloves and the outer wall of the grease gun, resulting in a lot of waste.

[0003] For this reason, it is urgent to develop a grease gun grease auxiliary filling tool to solve the above-mentioned problems. Utility Model Content

[0004] The main purpose of the utility model is to overcome the above-mentioned shortcomings of the prior art and to provide a grease filling tool for a grease gun, thereby realizing auxiliary filling of the grease for the grease gun.

[0005] The utility model is realized by the following technical solutions:

[0006] A grease gun grease filling tool, comprising:

[0007] an outer cylinder having a first end and a second end;

[0008] An inner cylinder having a first end and a second end, a side surface of the inner cylinder being provided with a filling slot, the inner cylinder being coaxially arranged in the outer cylinder, the inner side surface of the outer cylinder being in contact with the outer side surface of the inner cylinder, and the inner cylinder sliding relative to the outer cylinder along its central axis;

[0009] An inner cylinder baffle, which is fixedly connected to the second end of the inner cylinder, and a locking opening is provided on the inner cylinder baffle;

[0010] A piston assembly, the inner end of which is disposed in the inner tube, and the outer end of which is disposed outside the outer tube;

[0011] The piston assembly has two connection states:

[0012] State 1: the piston assembly and the inner cylinder baffle are not limited, and the piston assembly moves in the inner cylinder;

[0013] In state two, the piston assembly and the inner cylinder assembly are limited, and the piston assembly drives the inner cylinder to move in the outer cylinder.

[0014] Specifically, the piston assembly comprises:

[0015] A piston plug body is disposed in the inner tube, and the piston plug body is in contact with the inner side surface of the inner tube, and the piston plug body slides relative to the inner tube along its central axis;

[0016] A piston push rod, the inner end of which passes through the locking opening and is fixedly connected to the piston plug body, and the outer end of the piston push rod is arranged outside the outer tube;

[0017] A piston locking pin, which is vertically connected to the inner end of the piston push rod, and the distance between the piston locking pin and the piston plug body is not less than the thickness of the inner cylinder baffle;

[0018] The locking opening comprises a circular hole and a strip-shaped elongated hole, wherein the circular hole is coaxially arranged with the piston push rod, and the strip-shaped elongated hole is arranged along the extension line of the radius of the circular hole;

[0019] When in state 1, the piston locking pin coincides with the strip-shaped extension hole;

[0020] When in state two, the piston locking pin does not overlap with the strip-shaped extension hole.

[0021] Optionally, the length of the outer tube is greater than that of the inner tube. The length of the piston push rod is not less than that of the outer tube. The first end of the outer tube is closed by a detachable tube cap, the second end of the outer tube is closed by an outer tube cover, and the outer end of the piston push rod passes through the outer tube cover and is fixedly connected to the handle.

[0022] Optionally, an inner cylinder retaining ring is fixedly connected to the inner cylinder baffle, the inner cylinder retaining ring is coaxially arranged with the outer cylinder, and a locking assembly for fixing the inner cylinder retaining ring is arranged at the second end of the outer cylinder.

[0023] Specifically, the locking assembly includes at least one locking piece and an outer tube sheath, the second end of the outer tube is provided with a mounting groove, the locking piece is elastically connected in the mounting groove, the outer tube sheath is sleeved on the outer tube, and when the outer tube sheath overlaps with the locking piece, the outer tube sheath drives the locking piece to move toward the inside of the outer tube;

[0024] An arc-shaped groove matched with the locking piece is arranged on the annular surface of the inner cylinder retaining ring. When fixing, the locking piece is locked into the arc-shaped groove.

[0025] Optionally, there are multiple arc-shaped grooves, which are distributed in a ring array on the inner cylinder retaining ring.

[0026] Optionally, the outer side surface of the outer tube sheath is provided with a straight cut-out platform to prevent sliding.

[0027] Optionally, the outer ring surface of the piston plug body is provided with a sealing ring for sliding sealing with the inner side surface of the inner tube.

[0028] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0029] The utility model provides a slidable inner cylinder in the outer cylinder. When the tool needs to be filled with grease, the inner cylinder is pushed out of the outer cylinder by a piston assembly. After the grease is filled in the inner cylinder, the inner cylinder is returned to its position and the grease is pushed out of the inner cylinder by the piston assembly, thereby achieving the filling of the grease and having a good filling effect. Too many gaps and bubbles will not be generated, the waste caused by the sticking of the grease is reduced, and it is not easy to cause contamination to other objects. By using the tool, the labor intensity can be reduced and the work efficiency and quality can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings illustrate exemplary embodiments of the present invention and, together with the description thereof, are used to explain the principles of the present invention. These drawings are included to provide a further understanding of the present invention, and the accompanying drawings are included in and constitute a part of this specification and do not constitute a limitation on the embodiments of the present invention.

[0031] Figure 1 The utility model is a schematic diagram of the appearance of a grease gun grease filling tool.

[0032] Figure 2 The utility model is a structural schematic diagram of a grease gun grease filling tool.

[0033] Figure 3 It is a structural schematic diagram of the inner cylinder according to the utility model.

[0034] Figure 4 It is a structural schematic diagram of the locking assembly according to the utility model.

[0035] Figure markings: 1-inner cylinder, 2-outer cylinder, 3-piston, 4-handle, 5-outer cylinder cover, 6-inner cylinder baffle, 7-inner cylinder baffle ring, 8-piston push rod, 9-outer cylinder sleeve, 10-sealing ring, 11-piston locking pin, 12-locking plate. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and implementation methods. It is understood that the specific implementation methods described here are only used to explain the relevant content, rather than to limit the utility model.

[0037] It should also be noted that, for the convenience of description, only the parts related to the present invention are shown in the drawings.

[0038] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0039] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0040] In the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0041] Embodiment 1

[0042] like Figure 1 and Figure 2 As shown, a grease gun grease filling tool is provided, comprising: an outer cylinder 2, an inner cylinder 1, an inner cylinder baffle 6 and a piston 3 assembly.

[0043] For the convenience of description, the two ends of the outer tube 2 are named as the first end and the second end respectively. Similarly, the two ends of the inner tube 1 are also the first end and the second end. The first end of the outer tube 2 and the first end of the inner tube 1 are located at the same end.

[0044] A filling groove is provided on the side of the inner cylinder 1 , and the filling groove is used to fill grease into the inner cylinder 1 after the inner cylinder 1 is pushed out from the outer cylinder 2 .

[0045] The inner cylinder 1 is coaxially arranged in the outer cylinder 2, the inner side surface of the outer cylinder 2 is in contact with the outer side surface of the inner cylinder 1, and the inner cylinder 1 slides along its central axis relative to the outer cylinder 2; the inner cylinder baffle 6 is fixedly connected to the second end of the inner cylinder 1, and a locking opening is provided on the inner cylinder baffle 6; the inner cylinder baffle 6 is fixedly connected to the inner cylinder 1, and the piston 3 assembly applies a force to the inner cylinder baffle 6 to adjust the position of the inner cylinder 1.

[0046] The inner end of the piston 3 assembly is arranged in the inner tube 1, and the outer end of the piston 3 assembly is arranged outside the outer tube 2;

[0047] The piston 3 assembly has two connection states:

[0048] State 1: the piston 3 assembly and the inner cylinder baffle 6 are not limited, and the piston 3 assembly moves in the inner cylinder 1;

[0049] In state two, the piston 3 assembly and the inner tube 1 assembly are limited, and the piston 3 assembly drives the inner tube 1 to move in the outer tube 2.

[0050] When filling the grease, first set the piston 3 assembly to state 2, then push the piston 3 assembly to push the inner cylinder 1 out of the outer cylinder 2, and then gradually squeeze the grease into the inner cylinder 1 along the notch of the inner cylinder 1. During the squeezing process, it is convenient to observe the filling effect and adjust the squeezing direction and amount in real time. This method is suitable for bagged and tubed grease. For small barrel packaging, the grease can be filled into the inner cylinder 1 with the help of a putty knife tool. The amount of grease to be loaded into the inner cylinder 1 is determined according to the capacity of the grease gun. The size of the cylinder can be designed according to the specifications of the grease gun.

[0051] After the grease is filled, pull the piston 3 assembly so that the piston 3 assembly pulls the inner tube 1 back into the outer tube 2, and then converts the piston 3 assembly to state 1, and then pushes the piston 3 assembly forward, the piston 3 assembly pushes the grease in the inner tube 1 out, thus realizing the grease adding function.

[0052] Embodiment 2

[0053] like Figure 2 and Figure 3 As shown, in order to achieve the functions and purposes of the first embodiment, the piston 3 assembly includes: a piston 3 plug body, a piston push rod 8 and a piston locking pin 11

[0054] The piston 3 plug body is arranged in the inner cylinder 1, and the piston 3 plug body is in contact with the inner side surface of the inner cylinder 1, and the piston 3 plug body slides relative to the inner cylinder 1 along the central axis; the main function is to push the grease in the inner cylinder 1, and it is also responsible for applying force to the inner cylinder baffle 6 when the inner cylinder 1 is pulled back into the outer cylinder 2.

[0055] The inner end of the piston push rod 8 passes through the locking opening and is fixedly connected to the piston 3 plug body, and the outer end of the piston push rod 8 is arranged outside the outer tube 2;

[0056] The piston locking pin 11 is vertically connected to the inner end of the piston push rod 8, and the distance between the piston locking pin 11 and the piston 3 plug body is not less than the thickness of the inner cylinder baffle 6; the main function is to apply a force to the inner cylinder baffle 6 when the inner cylinder 1 is pushed out of the outer cylinder 2.

[0057] In order to apply forces in different directions to the inner cylinder baffle 6 in different states, the locking opening includes a circular hole and a strip-shaped extended hole. The circular hole is coaxially arranged with the piston push rod 8, and the strip-shaped extended hole is arranged along the extension line of the radius of the circular hole.

[0058] When in state 1, the piston locking pin 11 coincides with the strip-shaped extension hole; at this time, the piston 3 assembly does not interfere with the inner cylinder baffle 6, and the piston 3 assembly does not exert a force on the inner cylinder 1.

[0059] When in state 2, the piston locking pin 11 does not overlap with the strip-shaped extension hole. At this time, the piston 3 assembly interferes with the inner cylinder baffle 6, and the piston 3 assembly applies a force to the inner cylinder 1.

[0060] The specific working methods are:

[0061] When not in use, the piston 3 plug body is located at the first end of the inner cylinder 1. Therefore, when in use, the piston push rod 8 is pulled out to the bottom, so that the piston 3 plug body is close to the second end, and the piston push rod 8 is rotated to align the piston locking pin 11 with the strip-shaped extension hole of the inner cylinder baffle 6, so that the piston locking pin 11 passes through the inner cylinder baffle 6. Then, the piston push rod 8 is rotated again to misalign the piston locking pin 11 with the strip-shaped extension hole. When the piston push rod 8 is pushed forward, the inner cylinder 1 is pushed out of the outer cylinder 2 because the inner cylinder baffle 6 is stuck between the piston locking pin 11 and the piston 3 plug body.

[0062] After the grease is filled, pull back the piston push rod 8, the inner cylinder 1 returns to the outer cylinder 2, the inner cylinder 1 and the outer cylinder 2 are fixed, and the piston push rod 8 is rotated to align the piston locking pin 11 with the strip extension hole of the inner cylinder baffle 6, and the piston locking pin 11 passes through the inner cylinder baffle 6, and then the first end of the tool is completely placed in the grease gun barrel to be filled, and the piston push rod 8 is slowly pushed forward. At this time, the piston 3 plug body pushes the grease in the inner cylinder 1 into the grease gun barrel. With continuous pushing, the grease is gradually filled in the grease gun barrel from the inside to the outside. At the same time, due to the extrusion of the grease, the tool as a whole is continuously withdrawn from the gun barrel until the grease is completely pushed into the gun barrel or the gun barrel is filled, and then the grease injection operation can be carried out smoothly.

[0063] In order to achieve the above operation, it is necessary to appropriately limit the length of each component, and the length of the outer cylinder 2 is greater than the length of the inner cylinder 1. The length of the piston push rod 8 is not less than the length of the outer cylinder 2.

[0064] In order to prevent contamination when not in use, the first end of the outer tube 2 is closed by a detachable tube cap, the second end of the outer tube 2 is closed by an outer tube cover 5, and the outer end of the piston push rod 8 passes through the outer tube cover 5 and is fixedly connected to the handle 4.

[0065] Embodiment 3

[0066] It can be seen from the second embodiment that when performing the grease injection operation, the inner cylinder 1 and the outer cylinder 2 need to be fixed, so this embodiment provides a fixing method.

[0067] An inner cylinder retaining ring 7 is fixedly connected to the inner cylinder retaining plate 6 . The inner cylinder retaining ring 7 is coaxially arranged with the outer cylinder 2 . A locking assembly for fixing the inner cylinder retaining ring 7 is arranged at the second end of the outer cylinder 2 .

[0068] The locking assembly includes at least one locking piece 12 and an outer tube sheath 9. The second end of the outer tube 2 is provided with a mounting groove. The locking piece 12 is elastically connected in the mounting groove. The outer tube sheath 9 is sleeved on the outer tube 2. When the outer tube sheath 9 overlaps with the locking piece 12, the outer tube sheath 9 drives the locking piece 12 to move toward the inside of the outer tube 2.

[0069] An arc-shaped groove matched with the locking piece 12 is arranged on the annular surface of the inner cylinder retaining ring 7. When fixing, the locking piece 12 is locked into the arc-shaped groove.

[0070] The outer tube sheath 9 is an annular component that fits the outer tube 2 and can be used as a gripping part of the tool. The outer side surface of the outer tube sheath 9 is provided with a symmetrical straight cut platform, which can be used as a supporting plane when placing the tool to prevent the tool from rolling uncontrollably.

[0071] like Figure 4 As shown, in addition, the outer tube sheath 9 can slide freely on the outer tube 2. When it moves to the locking piece 12, it will drive the locking piece 12 to move inside the outer tube 2, and then the locking piece 12 is engaged in the arc-shaped slot, thereby locking the movement of the inner tube 1; when the outer tube sheath 9 leaves, the locking piece 12 rebounds and moves upward under the action of elasticity, and the locking piece 12 leaves the arc-shaped slot, thereby unlocking the inner tube 1.

[0072] In order to make the connection between the inner tube 1 and the outer tube 2 more stable, the number of arc-shaped grooves is set to be multiple and distributed in a ring array on the inner tube retaining ring 7 .

[0073] Finally, in order to push all the grease out of the inner tube 1 , a sealing ring 10 is provided on the outer ring surface of the piston 3 for sliding sealing with the inner side surface of the inner tube 1 .

[0074] In the description of this specification, the description with reference to the terms "one embodiment / method", "some embodiments / methods", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment / method or example are included in at least one embodiment / method or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment / method or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments / methods or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments / methods or examples described in this specification and the features of the different embodiments / methods or examples, unless they are contradictory.

[0075] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0076] Those skilled in the art should understand that the above embodiments are only for the purpose of clearly illustrating the present invention, and are not intended to limit the scope of the present invention. For those skilled in the art, other changes or modifications may be made based on the above utility model, and these changes or modifications are still within the scope of the present utility model.

Claims

1. A grease gun grease filling tool, characterized in that: include: An outer cylinder (2) having a first end and a second end; An inner cylinder (1) having a first end and a second end, a side surface of the inner cylinder (1) being provided with a filling groove, the inner cylinder (1) being coaxially arranged in the outer cylinder (2), the inner side surface of the outer cylinder (2) being in contact with the outer side surface of the inner cylinder (1), and the inner cylinder (1) sliding relative to the outer cylinder (2) along its central axis; an inner cylinder baffle (6) fixedly connected to the second end of the inner cylinder (1), and a locking opening is provided on the inner cylinder baffle (6); A piston (3) assembly, the inner end of which is arranged inside the inner tube (1), and the outer end of which is arranged outside the outer tube (2); The piston (3) assembly has two connection states: State 1: the piston (3) assembly and the inner cylinder baffle (6) are not limited in position, and the piston (3) assembly moves in the inner cylinder (1); In state two, the piston (3) assembly and the inner cylinder (1) assembly are limited in position, and the piston (3) assembly drives the inner cylinder (1) to move inside the outer cylinder (2).

2. A grease gun grease filling tool according to claim 1, characterized in that: The piston (3) assembly comprises: A piston (3) plug body, which is arranged in the inner cylinder (1), and the piston (3) plug body is in contact with the inner side surface of the inner cylinder (1), and the piston (3) plug body slides relative to the inner cylinder (1) along its central axis; A piston push rod (8), the inner end of which passes through the locking opening and is fixedly connected to the piston (3) plug body, and the outer end of the piston push rod (8) is arranged outside the outer tube (2); A piston locking pin (11) vertically connected to the inner end of the piston push rod (8), and the distance between the piston locking pin (11) and the piston (3) plug body is not less than the thickness of the inner cylinder baffle (6); The locking opening comprises a circular hole and a strip-shaped elongated hole, the circular hole is coaxially arranged with the piston push rod (8), and the strip-shaped elongated hole is arranged along the extension line of the radius of the circular hole; When in state 1, the piston locking pin (11) coincides with the strip-shaped elongated hole; When in state two, the piston locking pin (11) does not overlap with the strip-shaped elongated hole.

3. A grease gun grease filling tool according to claim 2, characterized in that: The length of the outer cylinder (2) is greater than the length of the inner cylinder (1).

4. A grease gun grease filling tool according to claim 3, characterized in that: The length of the piston push rod (8) is not less than the length of the outer cylinder (2).

5. A grease gun grease filling tool according to claim 3, characterized in that: The first end of the outer tube (2) is closed by a detachable tube cap, the second end of the outer tube (2) is closed by an outer tube cover (5), and the outer end of the piston push rod (8) passes through the outer tube cover (5) and is fixedly connected to the handle (4).

6. A grease gun grease filling tool according to claim 2, characterized in that: An inner cylinder baffle (7) is fixedly connected to the inner cylinder baffle plate (6); the inner cylinder baffle ring (7) is coaxially arranged with the outer cylinder (2); and a locking assembly for fixing the inner cylinder baffle ring (7) is arranged at the second end of the outer cylinder (2).

7. A grease gun grease filling tool according to claim 6, characterized in that: The locking assembly comprises at least one locking piece (12) and an outer tube sheath (9); the second end of the outer tube (2) is provided with a mounting groove, the locking piece (12) is elastically connected to the mounting groove, the outer tube sheath (9) is sleeved on the outer tube (2), and when the outer tube sheath (9) overlaps with the locking piece (12), the outer tube sheath (9) drives the locking piece (12) to move into the inner part of the outer tube (2); An arc-shaped groove adapted to the locking piece (12) is provided on the annular surface of the inner cylinder retaining ring (7); when fixed, the locking piece (12) is locked into the arc-shaped groove.

8. A grease gun grease filling tool according to claim 7, characterized in that: The arc-shaped grooves are multiple in number and are distributed in a ring array on the inner cylinder retaining ring (7).

9. A grease gun grease filling tool according to claim 7, characterized in that: The outer side surface of the outer tube sheath (9) is provided with a straight cut-out platform to prevent sliding.

10. A grease gun grease filling tool according to claim 2, characterized in that: The outer ring surface of the piston (3) plug body is provided with a sealing ring (10) for sliding sealing with the inner side surface of the inner tube (1).

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