Grease gun with fixing device

Abstract

The utility model belongs to the technical field of grease guns, and particularly relates to a grease gun with a fixing device, which comprises a gun barrel and an end cover arranged at the rear end of the gun barrel, a piston is arranged in the gun barrel, a zipper capable of pulling the piston to move is arranged at the rear end of the piston, a pulling piece is arranged at the other end of the zipper, and the pulling piece extends out of the end cover. A movable hole and a clamping hole are formed in the end cover, the diameter of the movable hole is larger than that of the clamping hole, the pulling piece is pulled to move in the movable hole through the zipper and drive the piston to move in the gun barrel, a reset spring is further arranged in the gun barrel, one end of the reset spring abuts against the inner end of the end cover, and the other end of the reset spring abuts against the rear end of the piston. A fixing part is further arranged on the end cover, the pulling part can be relatively fixed on the end cover through the fixing part and is limited to move, and the grease gun is simple in structure, can prevent the pull ring from being clamped in the grease filling process, and does not need magnetic attraction to limit shaking of the pull ring.

Description

Technical Field

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

[0002] At present, a grease gun is a hand tool for filling grease into mechanical equipment. It can be equipped with an iron gun rod (iron gun head) or a hose (flat gun head) for refueling. Most grease guns on the market are composed of a nozzle, a barrel and a pull ring. Pulling the pull ring pulls the piston in the barrel backward through a zipper connected to the piston, leaving space for storing the oil pipe in the barrel, and a rear cover is provided at the rear end of the barrel to block the barrel. A large hole and a small hole are provided on the rear cover. When installing the oil pipe, the zipper can be moved to the small hole to restrict the piston from moving forward. At this time, the oil pipe can be installed in the barrel. When oiling is needed, the zipper is moved from the small hole to the large hole. The piston is released from the restriction and the oil pipe can be pushed by the piston to oil. However, during this oiling process, the pull ring will shake with the movement of the human hand, causing the zipper to be stuck back into the small hole. At this time, the piston is restricted from moving, thereby affecting oiling. In order to solve this problem, In view of this situation, the applicant applied for a prior authorized patent: the patent announcement number is CN215891906U, and the patent name is a grease gun with a magnet. A magnetic attraction part is set on the back cover to magnetically adsorb the pull ring to prevent the pull ring from shaking, thereby preventing the zipper from being stuck back into the small hole during the greasing process. However, the shape of the magnetic attraction part installed on the back cover cannot be made larger, otherwise the strong magnetism will make it impossible to pull the pull ring, and the smaller magnetic attraction part has weak adsorption force. If the worker wants to raise his arm to wipe sweat or shake his arm for other actions, it is easy for the pull ring to separate from the attraction part. At this time, the worker does not notice and continues to grease, which will cause it to be stuck back into the small hole again. Therefore, there is a need for a grease gun that can prevent the pull ring from getting stuck during the greasing process but does not require magnetic attraction to limit the shaking of the pull ring. Summary of the Invention

[0003] The utility model aims to provide a grease gun with a simple structure, which can prevent a pull ring from getting stuck during the grease filling process but does not require magnetic attraction to limit the shaking of the pull ring.

[0004] The purpose of this utility model is achieved in this way:

[0005] A grease gun with a fixing device comprises a barrel and an end cover arranged at the rear end of the barrel, a piston being arranged in the barrel, a zipper being arranged at the rear end of the piston for pulling the piston to move, a pulling piece being arranged at the other end of the zipper, the pulling piece extending out of the end cover, a movable hole and a clamping hole being opened on the end cover, the movable hole having a diameter larger than the clamping hole, the pulling piece can be moved in the movable hole through the zipper and drive the piston to move in the barrel, a return spring is also provided in the barrel, one end of the return spring abuts against the inner end of the end cover, and the other end abuts against the rear end of the piston, the piston moving toward the end cover can squeeze the return spring, at this time after the zipper is driven to clamp in the clamping hole, the piston is restricted from moving, a fixing piece is also provided on the end cover, the pulling piece can be relatively fixed to the end cover through the fixing piece and restricted from moving.

[0006] Furthermore, one end of the fixing member is provided with a fixed part fixed on the end cover, and the other end is provided with a movable part movably against the end cover. The movable part of the fixing member is driven away from the end cover to form a placement space, and the pulling member can be moved into the placement space and separated by the fixing member.

[0007] Furthermore, the fixing portion is welded to the end cover, the middle portion of the fixing member protrudes away from the end cover, and the fixing member is a fixing plate.

[0008] Furthermore, the fixing portion is provided with screws, and the fixing portion is fixed to the end cover by the screws.

[0009] Furthermore, the abutting portion on the fixing member faces in the opposite direction to the clamping hole.

[0010] Compared with the prior art, the present invention has the following outstanding and beneficial technical effects:

[0011] The utility model discloses a novel grease gun which can prevent the pull ring from getting stuck during the grease application process. The pull ring at the rear end of the grease gun currently on the market is attracted by the magnet on the end cover. When the user shakes his arm, the pull ring is easily separated from the magnet. At this time, the worker does not notice and continues to apply grease, which causes the pull ring to get stuck back into the small hole again. The utility model does not require magnetism and does not need to consider the strength of the magnetism. It avoids the pull member from getting stuck due to too weak magnetism. By arranging a fixing piece on the end cover, the worker pulls the zipper through the pulling piece to drive the piston to move toward the end cover. When the piston approaches the end cover, the pulling piece cannot continue to pull the piston. At this time, the zipper on the pulling piece is locked in the locking hole. At this time, the zipper cannot move due to the size of the locking hole, and the piston cannot move. People can then install the oil pipe. After installation, the zipper is moved from the locking hole to the movable hole. At this time, the pulling piece is locked in the fixing piece again. The piston can move forward according to the user's operation and apply grease. In the process of applying grease, the pulling piece will not be separated from the fixing piece due to shaking, causing the zipper to be driven or even stuck back into the locking hole, thereby affecting the grease application process. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional diagram of the present utility model.

[0013] Figure 2 It is an exploded view of the present utility model.

[0014] Figure 3 It is a cross-sectional view of the present utility model.

[0015] Figure 4 It is a front view of the utility model.

[0016] Figure 5 It is a side view of the utility model.

[0017] The meaning of the numbers in the figure:

[0018] 1-barrel; 2-end cover; 3-zipper; 4-pull piece; 5-fixing piece; 6-fixing part; 7-movable part; 8-placing space; 9-movable hole; 10-clamping hole; 11-piston; 12-return spring. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with specific embodiments:

[0020] The grease gun with a fixing device comprises a barrel 1 and an end cover 2 arranged at the rear end of the barrel 1. A piston 11 is provided in the barrel 1. A zipper 3 is provided at the rear end of the piston 11 for pulling the piston 11 to move. A pulling piece 4 is provided at the other end of the zipper 3. The pulling piece 4 extends out of the end cover 2. A movable hole 9 and a clamping hole 10 are opened on the end cover 2. The movable hole 9 has a diameter larger than the clamping hole 10. The pulling piece 4 can be pulled to move in the movable hole 9 through the zipper 3 and drive the piston 11 to move in the barrel 1. A return spring 12 is also provided in the barrel 1. One end of the return spring 12 abuts against the inner end of the end cover 2, and the other end abuts against the rear end of the piston 11. The piston 11 moves toward the end cover 2 to squeeze the return spring 12. At this time, after the zipper 3 is driven to be clamped in the clamping hole 10, the piston 11 is restricted from moving. A fixing piece 5 is also provided on the end cover 2. The pulling piece 4 can be relatively fixed to the end cover 2 through the fixing piece 5 and restricted from moving.

[0021] The utility model is a new type of grease gun which can prevent the pull ring from getting stuck during the grease application process. The pull ring at the rear end of the grease gun currently on the market is attracted by the magnetic attraction on the end cover 2. When the user shakes his arm, the pull ring is easily separated from the magnetic attraction. At this time, the worker does not notice and continues to apply grease, which will cause it to get stuck back into the small hole again. The utility model does not require magnetic attraction and does not need to consider the strength of the magnetism. It avoids the pull member 4 from being separated due to too weak magnetism. By arranging a fixing member 5 on the end cover 2, the worker pulls the zipper 3 through the pull member 4 to drive the piston 11 to move toward the end cover 2. When the piston 11 is close to the end cover 2, The pulling member 4 can no longer pull the piston 11. At this time, the zipper 3 on the pulling member 4 is stuck in the clamping hole 10. At this time, the zipper 3 is restricted by the size of the clamping hole 10 and cannot move, and the piston 11 cannot move. People can then install the oil pipe. After installation, the zipper 3 is moved from the clamping hole 10 to the movable hole 9. At this time, the pulling member 4 is clamped in the fixing member 5. The piston 11 can move forward and pump oil according to people's operation. In the process of pumping oil, the pulling member 4 will not shake and separate from the fixing member 5, causing the zipper 3 to be driven or even the pulling member 4 to be stuck back in the clamping hole 10, thereby affecting the pumping process.

[0022] Preferably, one end of the fixing member 5 is provided with a fixing portion 6 fixed on the end cover 2, and the other end is provided with a movable portion 7 that is movable against the end cover 2. Driving the movable portion 7 of the fixing member 5 away from the end cover 2 can form a placement space 8, and the pulling member 4 can be moved into the placement space 8 and restricted from separation by the fixing member 5. One end of the fixing member 5 is fixed to the end cover 2 to prevent the fixing member 5 from separating from the end cover 2, which has stronger stability and no need to worry about the fixing member 5 separating from the end cover 2. The other end of the fixing member 5 can be away from the end cover 2. After being away from the end cover 2, a placement space 8 is formed between the other end of the fixing member 5 and the end cover 2, which is similar to the shape of a triangle. At this time, the pulling member 4 can be moved and placed in the placement space 8. After releasing your hand, one end of the fixing member 5 returns to its original position. At this time, the fixing member 5 fixes the pulling member 4 and cannot move. Even if you shake it hard, the fixing member 5 cannot separate.

[0023] The cam 5 is fixed to the top of the handle 2 and the cam 5 is fixed to the handle 2, so that the cam 5 can be fixed to the handle 2 with ease.

[0024] Preferably, the fixing portion 6 is provided with screws, and the fixing portion 6 is fixed to the end cover 2 by the screws. The screws can be easily disassembled and replaced by the user, and prevent the fixation of the movable portion 7 from being weakened after being moved multiple times.

[0025] Preferably, the abutment portion on the fixing member 5 faces in the opposite direction to the engaging hole 10 to prevent the zipper 3 from being engaged in the engaging hole 10 again when the pulling member 4 is shaken after being engaged in the fixing member 5 , and the positions of the two becoming farther apart due to the opposite directions.

[0026] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A grease gun with a fixing device, characterized in that: The invention comprises a gun barrel (1) and an end cover (2) arranged at the rear end of the gun barrel (1); a piston (11) is arranged in the gun barrel (1); a zipper (3) is arranged at the rear end of the piston (11) for pulling the piston (11) to move; a pulling member (4) is arranged at the other end of the zipper (3); the pulling member (4) extends out of the end cover (2); a movable hole (9) and a clamping hole (10) are provided on the end cover (2); the movable hole (9) has a diameter larger than the clamping hole (10); the pulling member (4) can be moved in the movable hole (9) through the zipper (3) and drive the piston (11) to move. 1) When the gun barrel (1) moves, a return spring (12) is further provided in the gun barrel (1), one end of the return spring (12) abuts against the inner end of the end cover (2), and the other end abuts against the rear end of the piston (11). The piston (11) moves toward the end cover (2) to squeeze the return spring (12). At this time, after the zipper (3) is driven to be stuck in the clamping hole (10), the piston (11) is restricted from moving. A fixing member (5) is further provided on the end cover (2), and the pulling member (4) can be fixed relatively to the end cover (2) through the fixing member (5) and restricted from moving.

2. The grease gun with a fixing device according to claim 1, characterized in that: The fixing member (5) has a fixing portion (6) at one end fixed to the end cover (2), and a movable portion (7) at the other end movably abutting against the end cover (2). The movable portion (7) of the fixing member (5) is driven away from the end cover (2) to form a placement space (8), and the pulling member (4) can be moved into the placement space (8) and restricted from separation by the fixing member (5).

3. The grease gun with a fixing device according to claim 2, characterized in that: The fixing portion (6) is welded to the end cover (2), the middle portion of the fixing member (5) protrudes away from the end cover (2), and the fixing member (5) is a fixing plate.

4. The grease gun with a fixing device according to claim 2, characterized in that: The fixing portion (6) is provided with screws, and the fixing portion (6) is fixed to the end cover (2) via the screws.

5. A grease gun with a fixing device according to any one of claims 1 to 4, characterized in that: The movable portion (7) on the fixing member (5) is oriented in the opposite direction to the clamping hole (10).

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