Grease gun

Abstract

The utility model relates to a grease gun which comprises a grease storage barrel, a gun head and a hand rocker, the gun head is arranged at the upper end of the grease storage barrel in a covering mode, one side of the gun head extends outwards to form a rotating seat, an installation hole is formed in the rotating seat, a transmission gear is rotatably installed in the installation hole, the hand rocker is fixedly connected with the transmission gear, and the gun head is fixedly connected with the hand rocker. An oil pushing pipe and an oil outlet pipe are arranged in the gun head, the oil pushing pipe is communicated with the oil outlet pipe, an oil pushing rod is arranged in the oil pushing pipe, the transmission gear is in transmission connection with the oil pushing rod, and the oil pushing rod can slide in the oil pushing pipe and extrude grease outwards by rotating the hand rocker. The transmission gear is rotatably mounted in the mounting hole, and the hand rocker is fixed on the connecting structure of the transmission gear, so that a user can rotate the hand rocker more smoothly in a more labor-saving manner.

Description

Technical Field

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

[0002] A grease gun with publication number CN204005154U consists of a gun cover, a hand crank and a grease gun barrel body. The gun cover is a cylinder with a hollow interior and an open bottom. A hole is opened on the inner top surface of the gun cover for setting an oil inlet pipe. An oil push pipe is arranged on the outer top surface of the gun cover. One side of the oil push pipe is connected to an oil outlet pipe, and the other side is stuck in the hand crank and fixed by a fixed shaft. The grease gun barrel body is arranged at the bottom of the gun cover, and an oil push shaft is arranged in the oil push pipe. The bottom surface and horizontal top surface of the oil push shaft have locking teeth. The side where the oil push pipe is connected to the hand crank is U-shaped, and a fan-shaped gear is arranged in the middle. The hand crank is stuck on the outside of the U-shaped side and the three are fixed together by a fixed shaft. The fan-shaped gear is at the top of the oil push shaft and is stuck in the locking teeth of the oil push shaft. However, in this grease gun, the hand crank handle is stuck in the U-shaped side and the three parts are fixed together by a fixed shaft. When the hand crank handle is turned, the hand crank handle uses the center of the fixed shaft and the point where the fan gear meshes with the card teeth as support points and performs work on them. It is more laborious to turn the hand crank handle of the above grease gun. Utility Model Content

[0003] The purpose of the utility model is to overcome the above-mentioned deficiencies of the prior art and provide a labor-saving grease gun.

[0004] The purpose of the utility model is achieved through the following technical solutions:

[0005] A grease gun comprises an oil storage cylinder, a gun head and a hand crank, the gun head cover being arranged at the upper end of the oil storage cylinder, one side of the gun head extending outward to form a rotating seat, the rotating seat being provided with a mounting hole, a transmission gear being rotatably installed in the mounting hole, the hand crank being fixedly connected to the transmission gear, an oil push pipe and an oil outlet pipe being arranged in the gun head, the oil push pipe and the oil outlet pipe being communicated with each other, an oil push rod being arranged in the oil push pipe, the transmission gear being transmission-connected to the oil push rod, and the oil push rod can be made to slide in the oil push pipe and squeeze grease outward by rotating the hand crank.

[0006] Furthermore, it also includes a rotating member installed in the installation hole, and the transmission gear is sleeved in the rotating member.

[0007] Furthermore, the rotating seat includes a transmission gear mounting seat body and a locking piece. The transmission gear mounting seat body is provided with an inwardly recessed mounting portion. The rotating piece is installed in the mounting portion and locked by the locking piece. The locking piece is fixed to the transmission gear mounting seat body by screws.

[0008] Furthermore, the locking member is provided with an inwardly recessed slot, the rotating member is engaged with the slot, one end of the locking member is provided with a first stop portion, and the other end of the locking member is provided with a second stop portion, and both the first stop portion and the second stop portion can limit the transmission gear.

[0009] The transmission gear includes a connecting portion and a meshing portion, the connecting portion is sleeved in the rotating member, the oil push rod is provided with a latching tooth that can mesh with the meshing portion, the meshing portion is fan-shaped, the first stop portion can stop the front side of the meshing portion, and the second stop portion can stop the rear side of the meshing portion.

[0010] Furthermore, two oil push pipes and two oil push rods are provided, both of which are connected to the oil outlet pipe, and the two oil push pipes are arranged side by side on the same horizontal plane in the gun head, and the two oil push pipes are respectively located on both sides below the rotating seat, and the two oil push rods are respectively installed in the corresponding oil push pipes.

[0011] Furthermore, two transmission gears are provided and are respectively located on both sides of the rotating seat. The connecting parts on the two transmission gears are both sleeved in the rotating member, and the rotating member is a bearing. The meshing parts on the two transmission gears are respectively meshed with the teeth on the oil push rod on the corresponding side.

[0012] Furthermore, the transmission gear and the hand crank are fixed by a bolt and nut assembly, and the bolt and nut assembly includes a bolt and a nut, and the bolt passes through the hand crank, the transmission gear and the mounting hole in sequence and is connected to the nut.

[0013] Furthermore, the mounting portion and the card slot are both semicircular.

[0014] Furthermore, the gun head is provided with two air outlets which can be connected with the oil storage cylinder, and the two air outlets are both equipped with air venting nozzles. The two oil push pipes are both provided with oil inlets which can allow the butter in the oil storage cylinder to enter the corresponding oil push pipes.

[0015] Furthermore, an oil outlet is provided at the other end of the oil outlet pipe, an anti-oil return assembly is provided in the oil outlet, the anti-oil return assembly includes a spring and a sealing member, an oil outlet nozzle is installed at the outer end of the oil outlet, an oil outlet nozzle is provided with an oil outlet hole connected with the oil outlet pipe, one end of the spring abuts against the oil outlet nozzle, the other end of the spring abuts against one end of the sealing member, and the other end of the sealing member abuts against the connecting end of two oil push pipes and the oil outlet pipe.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The utility model discloses a grease gun, in which a hand crank and a transmission gear are fixed by a bolt and nut assembly, and the transmission gear is driven to rotate synchronously by the rotation of a rotating member, and in the process of shaking the hand crank, the transmission gear only rotates around the center of the rotating member with the center of the rotating member as a support point, and such a structural design makes it more labor-saving when the hand crank is rotated. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The utility model is a three-dimensional structural schematic diagram of one embodiment of a grease gun.

[0019] Figure 2 It is a three-dimensional structural schematic diagram of another embodiment of a grease gun of the utility model.

[0020] Figure 3 The utility model is a longitudinal sectional structural schematic diagram of a grease gun.

[0021] Figure 4 This is a schematic diagram of the partial decomposition structure of a grease gun of the utility model. Figure 1 .

[0022] Figure 5 This is a schematic diagram of the partial decomposition structure of a grease gun of the utility model. Figure 2 .

[0023] Figure 6 The utility model is a schematic diagram of the exploded structure of a grease gun in a top view.

[0024] Figure 7 The utility model is a schematic diagram of the exploded structure of a grease gun in an upward viewing direction. DETAILED DESCRIPTION

[0025] The utility model is further described in detail below with reference to the embodiments given in the accompanying drawings.

[0026] like Figure 1As shown, a grease gun in this embodiment includes an oil storage cylinder 1, a gun head 2 and a hand crank 3, and the gun head 2 is covered at the upper end of the oil storage cylinder 1. Specifically, the gun head 2 is a cylinder with a hollow interior and an open bottom surface, and the gun head 2 is screwed to the upper end of the oil storage cylinder 1. One side of the gun head 2 extends outward to form a rotating seat 4, and a mounting hole 5 is provided on the rotating seat 4. A transmission gear 7 is rotatably installed in the mounting hole 5, and the hand crank 3 is fixedly connected to the transmission gear 7. An oil push pipe 21 and an oil outlet pipe 22 are arranged in the gun head 2, and the oil push pipe 21 and the oil outlet pipe 22 are connected to each other. An oil push rod 23 is arranged in the oil push pipe 21, and the transmission gear 7 is transmission-connected to the oil push rod 23. Specifically, one end of the oil push rod 23 is inserted into the oil push pipe 21 and can slide along the direction in which the length of the oil push pipe 21 extends, and the other end of the oil push rod 23 is exposed to the oil push pipe 21 and connected to the transmission gear 7. By rotating the hand crank 3, the oil push rod 23 can slide in the oil push pipe 21 and squeeze the butter outward. The transmission gear 7 and the hand crank 3 are fixed by a bolt and nut assembly 8. Two groups of bolt and nut assemblies 8 are provided, and the two groups of bolt and nut assemblies 8 can make the connection between the transmission gear 7 and the hand crank 3 more stable. The bolt and nut assembly 8 includes a bolt 81 and a nut 82. The bolt 81 passes through the hand crank 3, the transmission gear 7 and the mounting hole 5 in sequence and is connected to the nut 82. Such a structural design makes it possible for the transmission gear 7 to rotate only with the center of the mounting hole 5 as a support point when the hand crank 3 is rotated, so that the hand crank 3 is more labor-saving when rotating.

[0027] like Figure 2-7As shown, a grease gun in another embodiment includes an oil storage cylinder 1, a gun head 2 and a hand crank 3, and the gun head 2 is covered at the upper end of the oil storage cylinder 1. Specifically, the gun head 2 is a cylinder with a hollow interior and an open bottom surface, and the gun head 2 is screwed to the upper end of the oil storage cylinder 1. One side of the gun head 2 extends outward to form a rotating seat 4, and a mounting hole 5 is provided on the rotating seat 4. A transmission gear 7 is rotatably installed in the mounting hole 5, and the hand crank 3 is fixedly connected to the transmission gear 7. An oil push pipe 21 and an oil outlet pipe 22 are arranged in the gun head 2, and the oil push pipe 21 and the oil outlet pipe 22 are connected to each other. An oil push rod 23 is arranged in the oil push pipe 21, and the transmission gear 7 is transmission-connected to the oil push rod 23. Specifically, one end of the oil push rod 23 is inserted into the oil push pipe 21 and can slide along the direction in which the length of the oil push pipe 21 extends, and the other end of the oil push rod 23 is exposed to the oil push pipe 21 and connected to the transmission gear 7. It also includes a rotating member 6 installed in the mounting hole 5, and a transmission gear 7 is sleeved in the rotating member 6. Specifically, the rotating member 6 is a ball bearing. By rotating the hand crank 3, the oil push rod 23 can slide in the oil push pipe 21 and squeeze the butter outward. Such a structural design makes it easier for the hand crank 3 to rotate when the hand crank 3 is rotated. Such a structural design makes it easier for the hand crank 3 to rotate when the hand crank 3 is rotated. The transmission gear 7 and the rotating member 6 rotate synchronously when the hand crank 3 is rotated, and the transmission gear 7 only uses the center of the rotating member 6 as a support point and rotates around it during the process of shaking the hand crank 3, so that the hand crank 3 is easier to rotate when it is rotated.

[0028] As described above, the rotating seat 4 includes a transmission gear mounting seat body 41 and a locking member 42. Specifically, the transmission gear mounting seat body 41 is connected to the gun head 2 as a whole. The transmission gear mounting seat body 41 is provided with an inwardly recessed mounting portion 43, and the rotating member 6 is mounted in the mounting portion 43 and locked by the locking member 42. The locking member 42 is fixed to the transmission gear mounting seat body 41 by screws.

[0029] As described above, the locking member 42 is provided with an inwardly recessed slot 44, the rotating member 6 is engaged with the slot 44, one end of the locking member 42 is provided with a first stop portion 45, and the other end of the locking member 42 is provided with a second stop portion 46, and the first stop portion 45 and the second stop portion 46 can both limit the transmission gear 7.

[0030] Preferably, the mounting portion 43 and the slot 44 are both semicircular, and the mounting portion 43 and the slot 44 surround and form the mounting hole 5. Such a structural design makes the rotating member 6 more adaptable when installed in the mounting portion 43 and the slot 44, and more secure and reliable when locked by the locking member 42.

[0031] As described above, the transmission gear 7 includes a connecting portion 71 and a meshing portion 72, the connecting portion 71 is sleeved in the rotating member 6, and the oil push rod 23 is provided with a latching tooth 231 that can mesh with the meshing portion 72, and the meshing portion 72 is fan-shaped. Specifically, when the hand crank 3 is pressed down, the first stopper 45 can stop the front side of the meshing portion 72, and when the hand crank 3 is lifted up, the second stopper 46 can stop the rear side of the meshing portion 72.

[0032] As described above, two oil pushing pipes 21 and two oil pushing rods 23 are provided, and both oil pushing pipes 21 are connected to the oil outlet pipe 22. Specifically, the two oil pushing pipes 21 are arranged side by side on the same horizontal plane in the gun head 2, and the two oil pushing pipes 21 are respectively located on both sides below the rotating seat 4, and the two oil pushing rods 23 are respectively installed in the corresponding oil pushing pipes 21.

[0033] As described above, two transmission gears 7 are provided and are respectively located on both sides of the rotating seat 4. The connecting parts 71 on the two transmission gears 7 are both mounted in the rotating member 6. Specifically, the rotating member 6 is a bearing, and the bearing is a ball bearing. The meshing parts 72 on the two transmission gears 7 are respectively meshed with the latching teeth 231 on the oil pushing rod 23 on the corresponding side.

[0034] As described above, the transmission gear 7 and the hand crank 3 are fixed by the bolt and nut assembly 8, and two sets of the bolt and nut assembly 8 are provided, and the two sets of the bolt and nut assembly 8 can make the connection between the transmission gear 7 and the hand crank 3 more stable. The bolt and nut assembly 8 includes a bolt 81 and a nut 82, and the bolt 81 passes through the hand crank 3, the transmission gear 7 and the rotating member 6 in sequence and is connected with the nut 82. Specifically, the inner side walls of the meshing parts 72 on the two transmission gears 7 are tightly attached to the two sides of the rotating member 6, and the locking of the bolt and nut assembly 8 can fix the meshing parts 72 on the two transmission gears 7 to the inner ring of the rotating member 6.

[0035] As mentioned above, the gun head 2 is also provided with two air outlet holes 11 which can be connected with the oil storage cylinder 1, and the two air outlet holes 11 are installed with air venting nozzles 12. The two oil push pipes 21 are provided with oil inlets 211 for the butter in the oil storage cylinder 1 to enter the corresponding oil push pipes 21 respectively.

[0036] As described above, the other end of the oil outlet pipe 22 is provided with an oil outlet 221, and an anti-oil return assembly 222 is provided in the oil outlet 221. The anti-oil return assembly 222 includes a spring 223 and a plugging member 224. Specifically, the plugging member 224 is a ball. An oil outlet nozzle 225 is installed at the outer end of the oil outlet 221, and an oil outlet hole 226 connected to the oil outlet pipe 22 is provided on the oil outlet nozzle 225. One end of the spring 223 abuts against the oil outlet nozzle 225, and the other end of the spring 223 abuts against one end of the plugging member 224, and the other end of the plugging member 224 abuts against the connecting end of the two oil push pipes 21 and the oil outlet pipe 22.

[0037] In summary, when the hand crank 3 is pressed down, the hand crank 3 can drive the transmission gear 7 to rotate and squeeze the butter to the oil outlet pipe 22 through the oil push rod 23 meshed with the meshing part 72. At this time, the butter in the oil outlet pipe 22 will be pushed by the pressure to slide the blocking member 224 and make the oil outlet pipe 22 and the oil push pipe 21 connected. After the blocking member 224 slides, the butter can flow from the oil push pipe 21 into the oil outlet pipe 22 and flow out from the oil outlet 221. In the process of lifting the hand crank 3 upward, the blocking member 224 is always in contact with the connecting end of the two oil push pipes 21 and the oil outlet pipe 22 under the action of the spring 223. At this time, the butter flowing into the oil outlet pipe 22 cannot flow back from the oil outlet pipe 22 into the oil push pipe 21.

[0038] The above is only a preferred embodiment of the present utility model, and it cannot be used to limit the scope of the present utility model. That is, all simple equivalent changes and modifications made according to the scope of the patent application of the present utility model and the content of the utility model description are still within the scope of the present utility model patent.

Claims

1. A grease gun, comprising an oil storage cylinder, a gun head and a hand crank, wherein the gun head cover is arranged at the upper end of the oil storage cylinder, characterized in that: One side of the gun head extends outward to form a rotating seat, and a mounting hole is opened on the rotating seat. A transmission gear is rotatably installed in the mounting hole, and the hand crank is fixedly connected to the transmission gear. An oil pushing pipe and an oil outlet pipe are provided in the gun head, and the oil pushing pipe and the oil outlet pipe are communicated with each other. An oil pushing rod is provided in the oil pushing pipe, and the transmission gear is transmission-connected to the oil pushing rod. By rotating the hand crank, the oil pushing rod can slide in the oil pushing pipe and squeeze the butter outward.

2. A grease gun according to claim 1, characterized in that: It also includes a rotating member installed in the installation hole, and the transmission gear is sleeved in the rotating member.

3. A grease gun according to claim 2, characterized in that: The rotating seat includes a transmission gear mounting seat body and a locking piece. The transmission gear mounting seat body is provided with an inwardly recessed mounting portion. The rotating piece is installed in the mounting portion and locked by the locking piece. The locking piece is fixed to the transmission gear mounting seat body by screws.

4. A grease gun according to claim 3, characterized in that: The locking member is provided with an inwardly recessed slot, and the rotating member is engaged with the slot. A first stop portion is provided at one end of the locking member, and a second stop portion is provided at the other end of the locking member. Both the first stop portion and the second stop portion can limit the transmission gear.

5. A grease gun according to claim 4, characterized in that: The transmission gear includes a connecting portion and a meshing portion, the connecting portion is sleeved in the rotating member, the oil push rod is provided with a latching tooth that can mesh with the meshing portion, the meshing portion is fan-shaped, the first stop portion can stop the front side of the meshing portion, and the second stop portion can stop the rear side of the meshing portion.

6. A grease gun according to claim 1 or 2 or 3 or 4 or 5, characterized in that: The oil pushing pipe and the oil pushing rod are both provided with two, and the two oil pushing pipes are both connected with the oil outlet pipe. The two oil pushing pipes are arranged side by side on the same horizontal plane in the gun head, and the two oil pushing pipes are respectively located on both sides below the rotating seat, and the two oil pushing rods are respectively installed in the corresponding oil pushing pipes.

7. A grease gun according to claim 5, characterized in that: The transmission gears are provided with two and are respectively located on both sides of the rotating seat. The connecting parts on the two transmission gears are both sleeved in the rotating member, and the rotating member is a bearing. The meshing parts on the two transmission gears are respectively meshed with the teeth on the oil push rod on the corresponding side.

8. A grease gun according to claim 1 or 2, characterized in that: The transmission gear and the hand crank are fixed by a bolt and nut assembly, which includes a bolt and a nut. The bolt passes through the hand crank, the transmission gear and the mounting hole in sequence and is connected to the nut.

9. A grease gun according to claim 4, characterized in that: The mounting portion and the slot are both semicircular.

10. A grease gun according to claim 6, characterized in that: The gun head is also provided with two air outlet holes which can be connected with the oil storage cylinder, and the two air outlet holes are both equipped with air bleed nozzles. The two oil push pipes are both provided with oil inlets through which the butter in the oil storage cylinder can enter the corresponding oil push pipes respectively. The other end of the oil outlet pipe is provided with an oil outlet, and an anti-oil return component is provided in the oil outlet. The anti-oil return component includes a spring and a sealing member. An oil outlet nozzle is installed at the outer end of the oil outlet, and an oil outlet hole which is connected with the oil outlet pipe is provided on the oil outlet nozzle. One end of the spring abuts against the oil outlet nozzle, and the other end of the spring abuts against one end of the sealing member, and the other end of the sealing member abuts against the connecting end of the two oil push pipes and the oil outlet pipe.

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