Grease gun

Abstract

The utility model relates to the technical field of grease guns, in particular to a grease gun which comprises a grease storage barrel, a driving device and a grease barrel cover, the driving device and the grease barrel cover are detachably connected, the grease barrel cover comprises a grease inlet cavity, a grease outlet hole, a grease inlet hole, a first plunger cavity and a second plunger cavity, and the two ends of the grease inlet cavity are communicated with the grease inlet hole and the grease storage barrel. The grease outlet hole is communicated with the first plunger cavity and the second plunger cavity, a first plunger rod is slidably connected into the first plunger cavity, a second plunger rod is slidably connected into the second plunger cavity, tooth-shaped parts are arranged on the first plunger rod and the second plunger rod, a fixing shaft is arranged in the grease cylinder cover, a driven gear is rotatably connected to the fixing shaft, and the driven gear is rotatably connected to the grease cylinder cover. The driven gear is meshed with the tooth-shaped part, a first one-way valve used for blocking the first plunger cavity and a second one-way valve used for blocking the second plunger cavity are further arranged, the first plunger rod is connected with the driving device, and the movement direction of the first plunger rod is opposite to that of the second plunger rod; the grease gun solves the problem that a traditional grease gun is discontinuous in grease feeding.

Description

Technical Field

[0001] The utility model relates to the technical field of grease guns, in particular to a grease gun. Background Art

[0002] Currently, the tools used to add grease to mechanical equipment on the market are generally grease guns, which are small in size and easy to carry. They can be used to lubricate various large and small machines anytime and anywhere. However, most traditional grease guns have only one oil inlet and low oil filling efficiency.

[0003] Therefore, grease guns with multiple oil inlets began to appear on the market. The use of multiple oil inlets increased the oil intake and greatly improved the oil injection efficiency. However, since this type of grease gun has no adjustment device, it will cause discontinuous oil injection, which greatly reduces the oil injection effect when the user uses it. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a grease gun, which solves the problem of discontinuous oil supply in traditional grease guns.

[0005] The technical solution adopted by the utility model is: a grease gun, comprising an oil storage cylinder, a grease cylinder cover and a driving device, wherein the driving device and the grease cylinder cover are detachably connected, the grease cylinder cover comprises an oil inlet chamber, an oil outlet hole, an oil inlet hole, a first plunger chamber and a second plunger chamber, both ends of the oil inlet chamber are communicated with the oil inlet hole and the interior of the oil storage cylinder, the oil outlet hole is communicated with the first plunger chamber and the second plunger chamber, a first plunger rod is slidably connected in the first plunger chamber, a second plunger rod is slidably connected in the second plunger chamber, a toothed portion is provided on the first plunger rod and the second plunger rod, a fixed shaft is provided in the grease cylinder cover, a driven gear is rotatably connected on the fixed shaft, the driven gear is meshed with the toothed portion, a first one-way valve for blocking the end of the first plunger chamber and a second one-way valve for blocking the end of the second plunger chamber are also provided on the grease cylinder cover, the first plunger rod is connected to the driving device, and the movement direction of the first plunger rod is opposite to that of the second plunger rod.

[0006] Through the above technical scheme, the butter is squeezed from the oil storage cylinder into the oil outlet hole, and the driving device is driven to drive the first plunger rod and the second plunger rod to slide. When the first plunger rod is still blocking the oil inlet hole, the butter can be squeezed out from the oil inlet hole at the second plunger rod and enter the oil outlet hole through the second plunger cavity. When the first plunger rod and the oil inlet hole are out of contact, the second plunger rod blocks the oil inlet hole, and the butter can be squeezed out from the oil inlet hole at the first plunger rod and enter the oil outlet hole through the first plunger cavity. The positions of the first plunger rod and the second plunger rod are adjusted by controlling the movement of the driving device, so that the butter can enter the oil outlet hole from the first plunger cavity or the second plunger cavity. When the user uses the grease gun, the butter can be squeezed out from the oil outlet hole evenly and continuously, avoiding the situation of discontinuous butter inflow during use, thereby greatly improving the oiling effect of the grease gun.

[0007] Furthermore, a gear cavity is provided on the butter tube cover, a mounting block is embedded in the gear cavity, a first mounting groove is provided on the mounting block, a second mounting groove is provided in the butter tube cover corresponding to the first mounting groove, and the fixed shaft is embedded in the first mounting groove and the second mounting groove.

[0008] Through the above technical solution, the fixed shaft is engaged with the first mounting groove and the second mounting groove so that the fixed shaft is firmly installed in the butter barrel cover, thereby preventing the fixed shaft from rotating with the rotation of the driven gear.

[0009] Furthermore, a first avoidance opening for the first plunger rod to pass through and a second avoidance opening for the second plunger rod to pass through are provided on the inner side wall of the gear chamber.

[0010] Through the above technical solution, the first plunger rod can mesh with the driven gear through the first avoidance opening, and the second plunger rod can mesh with the driven gear through the second avoidance opening, thereby avoiding friction between the driven gear and the gear cavity during rotation, so that the first plunger rod and the second plunger rod can slide more smoothly when the grease gun is in use.

[0011] Further, the length of the first plunger rod is greater than the length of the second plunger rod.

[0012] Through the above technical solution, the length of the first plunger rod is greater than that of the second plunger rod, so that the second plunger rod and the driving device are separated from each other during the sliding process of the first plunger rod. When the user uses the grease gun, the abutment between the second plunger rod and the driving device will not affect the extrusion of grease from the oil outlet.

[0013] Furthermore, the oil inlet hole includes a first oil inlet hole and a second oil inlet hole, the first oil inlet hole is arranged on the first plunger cavity, and the second oil inlet hole is arranged on the second plunger cavity.

[0014] Through the above technical solution, butter can enter the first plunger cavity from the first oil inlet hole on the first plunger cavity, and butter can enter the second plunger cavity from the second oil inlet hole on the second plunger cavity, so that the oil inlet processes of the first plunger cavity and the second plunger cavity are independent of each other and will not interfere with each other.

[0015] Furthermore, a receiving groove is provided in the butter tube cover, a slider is slidably connected in the receiving groove, the driving device includes a transmission gear group and a motor for driving the transmission gear group, the transmission gear group is connected to a transmission block, an eccentric column is provided on the transmission block, and a strip-shaped limit opening for the eccentric column to extend into is provided on the slider.

[0016] Through the above technical solution, the eccentric column and the strip-shaped limit opening cooperate so that after the transmission gear set drives the transmission block to rotate, the eccentric column abuts against the strip-shaped limit opening during movement, thereby driving the slider to slide in the butter cylinder cover.

[0017] Furthermore, a clamping portion is provided at the end of the first plunger rod, and a limiting groove is provided on the sliding block corresponding to the clamping portion, the clamping portion includes a clamping block and a connecting block, the cross-sectional area of ​​the clamping block is larger than the cross-sectional area of ​​the connecting block, the limiting groove includes a positioning groove and a clamping channel, the clamping block is clamped with the positioning groove, and the connecting block is inserted into the clamping channel.

[0018] Through the above technical solution, the clamping block and the positioning groove are clamped, and the connecting block is inserted into the clamping channel so that the first plunger rod can be easily installed in the limiting groove. The connection between the slider and the first plunger rod is very stable, which is convenient for factory production and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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 or the description of the prior art 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 the structures shown in these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a cross-sectional view of the utility model;

[0022] Figure 3 It is an exploded view of the utility model;

[0023] Figure 4 It is one of the partial structural schematic diagrams of the utility model;

[0024] Figure 5 This is the second schematic diagram of the partial structure of the utility model;

[0025] Figure 6 This is the third schematic diagram of the partial structure of the utility model;

[0026] Figure 7 This is the fourth schematic diagram of the partial structure of the utility model;

[0027] Figure 8 This is the fifth partial structural diagram of the utility model;

[0028] Fig. 9 This is a schematic diagram of the slider structure of the utility model;

[0029] Fig.10 This is a schematic diagram of the first plunger rod structure of the utility model;

[0030] Fig.11 This is a schematic diagram of the installation block structure of the utility model;

[0031] The utility model number information is as follows:

[0032] 1. Oil storage cylinder; 2. Butter cylinder cover; 3. Oil inlet chamber; 4. Oil outlet hole; 5. Oil inlet hole; 501. First oil inlet hole; 502. Second oil inlet hole; 6. First plunger chamber; 601. First plunger rod; 7. Second plunger chamber; 701. Second plunger rod; 8. Toothed portion; 9. Fixed shaft; 10. Driven gear; 11. First one-way valve; 12. Second one-way valve; 13. Gear chamber; 14. Mounting block; 1 5. First mounting groove; 16. Second mounting groove; 17. First avoidance opening; 18. Second avoidance opening; 19. Sliding block; 20. Transmission gear set; 21. Transmission block; 22. Eccentric column; 23. Strip-shaped limiting opening; 24. Accommodating groove; 25. Clamping part; 251. Clamping block; 252. Connecting block; 26. Limiting groove; 261. Positioning groove; 262. Clamping channel; 27. Driving device; 28. Motor;

[0033] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0036] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their 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 addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0037] See also Figures 1 to 11As shown, a grease gun includes an oil storage barrel 1, a grease barrel cover 2 and a driving device 27. The driving device 27 and the grease barrel cover 2 are detachably connected. The grease barrel cover 2 includes an oil inlet chamber 3, an oil outlet hole 4, an oil inlet hole 5, a first plunger chamber 6 and a second plunger chamber 7. Both ends of the oil inlet chamber 3 are connected to the oil inlet hole 5 and the interior of the oil storage barrel 1. The oil outlet hole 4 is connected to the first plunger chamber 6 and the second plunger chamber 7. A first plunger rod 601 is slidably connected in the first plunger chamber 6, and a second plunger rod 701 is slidably connected in the second plunger chamber 7. The plunger rod 601 and the second plunger rod 701 are both provided with a toothed portion 8, a fixed shaft 9 is provided in the butter cylinder cover 2, a driven gear 10 is rotatably connected to the fixed shaft 9, the driven gear 10 is meshed with the toothed portion 8, and the butter cylinder cover 2 is also provided with a first one-way valve 11 for blocking the end of the first plunger chamber 6 and a second one-way valve 12 for blocking the end of the second plunger chamber 7. The first plunger rod 601 is connected to the driving device 27, and the movement direction of the first plunger rod 601 is opposite to the movement direction of the second plunger rod 701. The butter is squeezed from the oil storage cylinder 1 into the oil outlet hole 4, and the driving device 27 is driven to drive the first plunger rod 601 and the second plunger rod 701 to slide. When the first plunger rod 601 is still blocking the oil inlet hole 5, the butter can be squeezed out from the oil inlet hole 5 at the second plunger rod 701 and enter the oil outlet hole 4 through the second plunger cavity 7. When the first plunger rod 601 and the oil inlet hole 5 are out of contact, the second plunger rod 701 blocks the oil inlet hole 5, and the butter can be squeezed out from the oil inlet hole 5 at the first plunger rod 601 and enter the oil outlet hole 4 through the first plunger cavity 6; the position of the first plunger rod 601 and the second plunger rod 701 is adjusted by controlling the movement of the driving device 27, so that the butter can enter the oil outlet hole 4 from the first plunger cavity 6 or the second plunger cavity 7. When the user uses the grease gun, the butter can be squeezed out from the oil outlet hole 4 evenly and continuously, avoiding the situation of discontinuous butter inflow during use, so that the oiling effect of the grease gun is greatly improved.

[0038] See also Figure 1 , 2 As shown in , 3, 5, 6, and 11, the butter barrel cover 2 is provided with a gear cavity 13, a mounting block 14 is embedded in the gear cavity 13, a first mounting groove 15 is provided on the mounting block 14, a second mounting groove 16 is provided in the butter barrel cover 2 corresponding to the first mounting groove 15, and the fixed shaft 9 is embedded in the first mounting groove 15 and the second mounting groove 16. The fixed shaft 9 is embedded in the first mounting groove 15 and the second mounting groove 16 so that the fixed shaft 9 is installed very firmly in the butter barrel cover 2, and the fixed shaft 9 is prevented from rotating with the rotation of the driven gear 10.

[0039] See also Figure 5 , 6As shown, the inner wall of the gear cavity 13 is provided with a first avoidance opening 17 for the first plunger rod 601 to pass through and a second avoidance opening 18 for the second plunger rod 701 to pass through. The first plunger rod 601 can mesh with the driven gear 10 through the first avoidance opening 17, and the second plunger rod 701 can mesh with the driven gear 10 through the second avoidance opening 18, so as to avoid friction between the driven gear 10 and the gear cavity 13 when rotating, so that the first plunger rod 601 and the second plunger rod 701 can slide more smoothly when the grease gun is in use.

[0040] See also Figure 3 As shown, the length of the first plunger rod 601 is greater than the length of the second plunger rod 701. The length of the first plunger rod 601 is greater than the length of the second plunger rod 701, so that the second plunger rod 701 and the driving device 27 are separated from each other during the sliding process of the first plunger rod 601, and when the user uses the grease gun, the abutment between the second plunger rod 701 and the driving device 27 will not affect the extrusion of grease from the oil outlet 4.

[0041] See also Figure 8 As shown, the oil inlet hole 5 includes a first oil inlet hole 501 and a second oil inlet hole 502, the first oil inlet hole 501 is arranged on the first plunger cavity 6, and the second oil inlet hole 502 is arranged on the second plunger cavity 7. Grease can enter the first plunger cavity 6 from the first oil inlet hole 501 on the first plunger cavity 6, and grease can enter the second plunger cavity 7 from the second oil inlet hole 502 on the second plunger cavity 7, so that the oil inlet processes of the first plunger cavity 6 and the second plunger cavity 7 are independent of each other and will not interfere with each other.

[0042] See also Figure 1 to Figure 7 As shown, a receiving groove 24 is provided in the butter barrel cover 2, and a slider 19 is slidably connected in the receiving groove 24. The driving device 27 includes a transmission gear set 20 and a motor 28 for driving the transmission gear set 20. The transmission gear set 20 is connected to a transmission block 21, and an eccentric column 22 is provided on the transmission block 21. The slider 19 is provided with a strip-shaped limit opening 23 for the eccentric column 22 to extend into. The eccentric column 22 and the strip-shaped limit opening 23 cooperate so that after the transmission gear set 20 drives the transmission block 21 to rotate, the eccentric column 22 abuts against the strip-shaped limit opening 23 during the movement, thereby driving the slider 19 to slide in the butter barrel cover 2.

[0043] See also Fig. 9 , 10As shown, a clamping portion 25 is provided at the end of the first plunger rod 601, and a limiting groove 26 is provided on the slider 19 corresponding to the clamping portion 25. The clamping portion 25 includes a clamping block 251 and a connecting block 252. The cross-sectional area of ​​the clamping block 251 is larger than the cross-sectional area of ​​the connecting block 252. The limiting groove 26 includes a positioning groove 261 and a clamping channel 262. The clamping block 251 is clamped with the positioning groove 261, and the connecting block 252 is penetrated in the clamping channel 262. The clamping block 251 is clamped with the positioning groove 261, and the connecting block 252 is penetrated in the clamping channel 262, so that the first plunger rod 601 can be easily installed in the limiting groove 26, and the connection between the slider 19 and the first plunger rod 601 is very stable, which is convenient for factory production and assembly.

[0044] When the utility model is in use, butter is squeezed from the oil storage cylinder 1 into the oil outlet hole 4, driving the transmission gear set 20 to rotate, driving the transmission block 21 to rotate, and the eccentric column 22 drives the slider 19 to move, sliding in the accommodating groove 24 to drive the first plunger rod 601 and the second plunger rod 701 to slide. When the first plunger rod 601 is still blocking the first oil inlet hole 501, butter can be squeezed out from the second oil inlet hole 502 at the second plunger rod 701 and enter the oil outlet hole 4 through the second plunger cavity 7. When the first plunger rod 601 and the first oil inlet hole 501 are out of contact, the second plunger rod 701 blocks the second oil inlet hole 502, and butter can be squeezed out from the first oil inlet hole 501 at the first plunger rod 601 and enter the oil outlet hole 4 through the first plunger cavity 6. The user can continuously squeeze out butter when using the grease gun, which is very convenient to use.

[0045] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A grease gun, comprising an oil storage cylinder (1), a grease cylinder cover (2) and a driving device (27), wherein the driving device (27) and the grease cylinder cover (2) are detachably connected, and characterized in that: The butter barrel cover (2) comprises an oil inlet chamber (3), an oil outlet hole (4), an oil inlet hole (5), a first plunger chamber (6) and a second plunger chamber (7); two ends of the oil inlet chamber (3) are connected to the oil inlet hole (5) and the interior of the oil storage barrel (1); the oil outlet hole (4) is connected to the first plunger chamber (6) and the second plunger chamber (7); a first plunger rod (601) is slidably connected to the first plunger chamber (6); a second plunger rod (701) is slidably connected to the second plunger chamber (7); and the first plunger rod (601) and the second plunger rod (701) are both provided with gears. The butter barrel cover (2) is provided with a fixed shaft (9), the fixed shaft (9) is rotatably connected to a driven gear (10), the driven gear (10) is meshed with the toothed portion (8), the butter barrel cover (2) is also provided with a first one-way valve (11) for blocking the end of the first plunger cavity (6) and a second one-way valve (12) for blocking the end of the second plunger cavity (7), the first plunger rod (601) is connected to the driving device (27), and the movement direction of the first plunger rod (601) is opposite to the movement direction of the second plunger rod (701).

2. A grease gun according to claim 1, characterized in that: The butter tube cover (2) is provided with a gear cavity (13), a mounting block (14) is embedded in the gear cavity (13), a first mounting groove (15) is provided on the mounting block (14), a second mounting groove (16) is provided in the butter tube cover (2) corresponding to the first mounting groove (15), and the fixed shaft (9) is embedded in the first mounting groove (15) and the second mounting groove (16).

3. A grease gun according to claim 2, characterized in that: The inner wall of the gear chamber (13) is provided with a first avoidance opening (17) for the first plunger rod (601) to pass through, and a second avoidance opening (18) for the second plunger rod (701) to pass through.

4. A grease gun according to claim 1, 2 or 3, characterized in that: The length of the first plunger rod (601) is greater than the length of the second plunger rod (701).

5. A grease gun according to claim 4, characterized in that: The oil inlet hole (5) comprises a first oil inlet hole (501) and a second oil inlet hole (502); the first oil inlet hole (501) is arranged on the first plunger cavity (6), and the second oil inlet hole (502) is arranged on the second plunger cavity (7).

6. A grease gun according to claim 1 or 2 or 3 or 5, characterized in that: The butter tube cover (2) is provided with a receiving groove (24), a slider (19) is slidably connected in the receiving groove (24), the driving device (27) comprises a transmission gear set (20) and a motor (28) for driving the transmission gear set (20), the transmission gear set (20) is connected with a transmission block (21), an eccentric column (22) is provided on the transmission block (21), and the slider (19) is provided with a strip-shaped limiting opening (23) for the eccentric column (22) to extend into.

7. A grease gun according to claim 6, characterized in that: A clamping portion (25) is provided at the end of the first plunger rod (601); a limiting groove (26) is provided on the slider (19) corresponding to the clamping portion (25); the clamping portion (25) comprises a clamping block (251) and a connecting block (252); the cross-sectional area of ​​the clamping block (251) is larger than the cross-sectional area of ​​the connecting block (252); the limiting groove (26) comprises a positioning groove (261) and a clamping channel (262); the clamping block (251) and the positioning groove (261) are clamped together; and the connecting block (252) is inserted into the clamping channel (262).

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