Manual butter gun with labor-saving function

Abstract

The utility model discloses a manual butter gun with laborsaving function relates to lubricating grease filling device technical field, including oil storage cylinder and connecting cover, the top of oil storage cylinder is connected with the connecting cover, the top of connecting cover is connected with the gun head, and the top of gun head is connected with the oil outlet spout, the top of gun head is provided with the pin shaft, and one end of pin shaft is connected with the rocker, the bottom of rocker is connected with the handle, and the bottom of handle is provided with the handle. The utility model discloses through pressing the boss, handle stretches the proper length, after adjusting to the proper position, unfastens the boss, and the movable plate moves downward along the movable axle, makes the plug -in block insert the pin hole to realize the length adjustment locking positioning purpose of handle fast, when needing to exert the greater pressure, adjusts handle length to increase the lever ratio to reduce unit operating force, alleviates the user fatigue.

Description

Technical Field

[0001] This utility model relates to the technical field of grease filling devices, and in particular to a manual grease gun with a labor-saving function. Background Technology

[0002] Traditional manual grease guns rely on direct human power to drive the plunger, resulting in drawbacks such as high rotational resistance, low operating efficiency, and unstable pressure. This is especially problematic under high pressure or with thick grease, leading to strenuous work and fatigue. To overcome these limitations, the industry has optimized the transmission structure to reduce effort: firstly, multi-stage planetary gear or double gear transmission systems are used to amplify torque through reduction ratios, thus lowering operating resistance; secondly, the handle is extended using lever principles, further reducing the force required for pressing by lengthening the lever arm. Simultaneously, material upgrades (such as seamless steel cylinders and rubber-coated anti-slip designs) and structural optimizations (thickened plungers and high-sealing structures) improve durability and grease delivery stability. A manual grease gun with announcement number CN213686169U aims to provide a manual grease gun with a simple and reasonable structure, stable and reliable operation, low cost, and easy and labor-saving operation. It includes a reservoir, a nozzle, and a handle. The nozzle covers the upper open end of the reservoir. The nozzle has a pushing chamber and an inlet and outlet communicating with the pushing chamber. A pushing rod is slidably disposed within the pushing chamber, with one end of the pushing rod protruding from the pushing chamber. The top of the handle has a first pin hole and a second pin hole, as well as a first pin for passing through the first pin hole and a second pin for passing through the second pin hole. The nozzle has a pushing rod stroke groove, in which a rolling bearing for the first pin is fitted. The first pin passes through the rolling bearing and is fixed in the first pin hole. The second pin passes through one end of the pushing rod and is fixed in the second pin hole.

[0003] Compared to efficient and labor-saving designs such as gear transmission or ratchet transmission, the lever structure of the aforementioned existing technology still requires a large operating force in high-pressure lubrication scenarios. It lacks a dedicated exhaust valve or backflushing function, and the exhaust and cleaning process is cumbersome, which can easily lead to grease leakage. If impurities are mixed in with the grease, they may directly enter the oil pushing chamber or oil passage, causing damage to the sealing ring or blockage of the oil passage, thus affecting the lubrication effect. Therefore, corresponding improvements are needed. Summary of the Invention

[0004] The purpose of this invention is to provide a manual grease gun with a labor-saving function to solve the problems mentioned in the background art, such as the lack of labor-saving adjustment design and insufficient sealing performance.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a manual grease gun with labor-saving function, comprising a grease reservoir and a connecting cap, wherein the top end of the grease reservoir is threadedly connected to the connecting cap, the top end of the connecting cap is connected to a nozzle, and the top end of the nozzle is connected to an grease nozzle, the top end of the nozzle is provided with a pin, one end of the pin is connected to a rocker arm, the bottom end of the rocker arm is connected to a handle, and the bottom end of the handle is provided with a handle, an adjustment mechanism is connected to the outside of the handle, an anti-slip sleeve is provided on the outside of the grease reservoir, and a tail cap is provided at the bottom end of the grease reservoir.

[0006] Furthermore, the outer side of the grip is provided with multiple pin holes, and the bottom end of the grip is provided with a sliding groove. The inside of the sliding groove is connected to a limiting post, and the limiting post is fixed inside the handle.

[0007] Furthermore, the adjustment mechanism includes a return spring connected to the handle, a movable plate connected to the top of the return spring, a protrusion connected to the top of the movable plate, a movable shaft passing through the interior of the movable plate, a fixed plate provided on the outer side of the movable shaft, and an insert block connected to one end of the movable plate.

[0008] Furthermore, the end section of the insert is tapered, the handle is disposed inside the handle, and the handle is slidably connected to the limiting post.

[0009] Furthermore, a pull rod is connected inside the oil reservoir, and a support spring is connected to the outside of the pull rod. The bottom end of the support spring extends to the bottom end of the oil reservoir and is connected to a handle. A sealing plug is provided at the top end of the support spring, and the sealing plug is in close contact with the inside of the oil reservoir.

[0010] Furthermore, a filter screen is provided at the top of the connecting cover, and the surface of the sealing plug is made of aluminum oxide coated material.

[0011] Furthermore, the outer side of the anti-slip sleeve is covered with rubber, and the surface of the handle is provided with anti-slip texture.

[0012] Compared with the prior art, the beneficial effects of this utility model are: when using this manual grease gun with labor-saving function, the handle length can be adjusted to achieve the effect of labor-saving, and it has strong sealing and good anti-leakage effect; By pressing the protrusion, the handle extends to the appropriate length. After adjusting to the appropriate position, the protrusion is released, and the movable plate moves downward with the movable shaft, causing the insert block to be inserted into the pin hole. This achieves the purpose of quickly adjusting and locking the length of the handle. When greater pressure is required, the handle length is adjusted to increase the leverage ratio, thereby reducing the unit operating force and reducing user fatigue. Using a threaded knob on the oil reservoir and connecting cap, the sealing plug fits snugly against the inner wall of the oil reservoir. A filter screen is installed at the top of the sealing plug to intercept most impurities, protecting the seals and oil passages. The surface of the sealing plug is coated with aluminum oxide, achieving a hardness of HV1800 or higher, significantly improving wear resistance and corrosion resistance, and extending the seal life. With improved sealing, the sealing plug stroke and oil output are linearly related, avoiding "loose at the beginning and tight at the end" or fluctuations in oil output caused by leakage. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a side view sectional structural diagram of the handle of this utility model; Figure 3 This is a schematic diagram of the front cross-sectional structure of this utility model; Figure 4 This is a three-dimensional structural diagram of the tie rod of this utility model; Figure 5 For the present utility model Figure 2 A magnified structural diagram of point A in the middle.

[0015] The following are the annotations in the diagram: 1. Oil reservoir; 2. Connecting cover; 3. Gun head; 4. Oil outlet; 5. Anti-slip sleeve; 6. Handle; 7. Pin; 8. Rocker arm; 9. Handle; 10. Grip; 1001. Pin hole; 1002. Slide groove; 11. Adjustment mechanism; 1101. Protrusion; 1102. Movable plate; 1103. Return spring; 1104. Fixed plate; 1105. Insert block; 1106. Movable shaft; 12. Limiting post; 13. Sealing plug; 14. Pull rod; 15. Support spring; 16. Tail cover. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0017] Please see Figures 1-5 The present invention provides an embodiment of a manual grease gun with a labor-saving function, comprising a reservoir 1 and a connecting cover 2. The top end of the reservoir 1 is threadedly connected to the connecting cover 2, the top end of the connecting cover 2 is connected to the nozzle 3, and the top end of the nozzle 3 is connected to the nozzle 4. The top end of the nozzle 3 is provided with a pin 7, and one end of the pin 7 is connected to a rocker arm 8. The bottom end of the rocker arm 8 is connected to a handle 10, and the bottom end of the handle 10 is provided with a handle 9. The outer side of the handle 10 is provided with multiple pin holes 1001, and the bottom end of the handle 10 is provided with a slide groove 1002. The inside of the slide groove 1002 is connected to a limiting post 12, and the limiting post 12 is fixed inside the handle 9. Specifically, such as Figure 1 , Figure 2 As shown, during use, the pin hole 1001 can fix the position between the handle 9 and the grip 10, and the slide groove 1002 slides on the limit post 12 to adjust the length of the handle 9 and the grip 10 to adapt to different operating scenarios and user habits. The adjustable length or angle allows users to adjust the length or angle according to their own conditions, making the grip posture more ergonomic and reducing muscle fatigue or joint damage caused by long-term operation. An adjustment mechanism 11 is connected to the outside of the handle 9; The adjustment mechanism 11 includes a return spring 1103, which is connected to the handle 9. The top end of the return spring 1103 is connected to a movable plate 1102, and the top end of the movable plate 1102 is connected to a protrusion 1101. A movable shaft 1106 passes through the interior of the movable plate 1102, and a fixed plate 1104 is provided on the outside of the movable shaft 1106. One end of the movable plate 1102 is connected to an insert block 1105. The end section of the insert 1105 is tapered, and the handle 10 is located inside the handle 9. The handle 10 is slidably connected to the limiting post 12. Specifically, such as Figure 1 , Figure 2 , Figure 5 As shown, when in use, press down on the protrusion 1101, the movable plate 1102 moves downward with the movable shaft 1106, the insert 1105 at one end of the movable shaft 1106 is lifted, the handle 10 moves outside the limit post 12, after adjusting to the appropriate position, release the protrusion 1101, so that the insert 1105 falls into the pin hole 1001, the return spring 1103 returns to its original position, and locks it in place. By adjusting the length of the handle 10, the direction of force application is better matched with the direction of movement of the oil push rod, reducing ineffective force, thereby achieving a more efficient oil pushing effect under the same operating force. An anti-slip sleeve 5 is provided on the outside of the oil storage tank 1, and a tail cap 16 is provided at the bottom of the oil storage tank 1. The oil reservoir 1 is internally connected to a pull rod 14, and a support spring 15 is connected to the outside of the pull rod 14. The bottom end of the support spring 15 extends to the bottom end of the oil reservoir 1 and is connected to a handle 6. A sealing plug 13 is provided at the top of the support spring 15, and the sealing plug 13 is in close contact with the inside of the oil reservoir 1. A filter screen is provided at the top of the connecting cover 2, and the surface of the sealing plug 13 is made of aluminum oxide coated material; The outer side of the anti-slip sleeve 5 is wrapped with rubber, and the surface of the handle 9 is textured with anti-slip material; Specifically, such as Figure 1 , Figure 3 , Figure 4 As shown, during use, hold the oil reservoir 1 with one hand and pull the handle 6 backward with the other hand. The lever 14 connected to the handle 6 moves downward, and the support spring 15 on the outside of the lever 14 also moves. The sealing plug 13 at the top of the lever 14 also moves downward, compressing the support spring 15. The grease is drawn in from the top of the sealing plug 13. When the grease is sprayed out from the nozzle 4, impurities are filtered out from the filter screen at the top of the connecting cover 2. The sealing plug 13 is in close contact with the inner wall of the oil reservoir 1. A stepped groove of connecting cover 2-gun head 3 is set on the outside of the sealing plug 13. A sealing ring of different material is installed in each groove to form a multi-level sealing barrier with good sealing effect.

[0018] Working principle: When using this utility model, first, turn the knob connecting cover 2 to separate the oil reservoir 1 from the connecting cover 2. Hold the oil reservoir 1 with one hand and pull the handle 6 backward with the other hand. The sealing plug 13, pull rod 14, and support spring 15 connected to the handle 6 move downward, drawing grease from the top of the oil reservoir 1. While filling, use a tool to compact it and remove air. Install the connecting cover 2 and tighten it. Press down on the protrusion 1101. The movable plate 1102 moves downward with the movable shaft 1106. The insertion block 1105 at one end of the movable shaft 1106 is lifted. The handle 10 moves outside the limiting post 12. After adjusting to the appropriate position, release the protrusion 1101 so that the insertion block 1105 falls into the pin hole 1001. The return spring 1103 returns to its original position and locks it in place. Hold the handle 9 and press the handle 9 continuously to use air pressure to expel air until the oil is evenly discharged from the oil outlet 4. The adjustable handle 9 is designed to adapt to different operating scenarios and user habits, reducing fatigue. Secondly, to ensure a comfortable grip and prevent slippage during operation, the anti-slip sleeve 5 is wrapped in rubber, and the surface of the handle 9 is textured with anti-slip material to improve grip stability and prevent slippage. Finally, wipe the surface of the oil reservoir 1 and the oil outlet 4 with a clean cloth to prevent the grease from hardening and clogging, improve the wear resistance and oil resistance of the sealing plug 13, and extend the sealing life.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0021] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A manual grease gun with labor-saving function, comprising a grease reservoir (1) and a connecting cap (2), wherein the top end of the grease reservoir (1) is threadedly connected to the connecting cap (2). Its features are: The top of the connecting cover (2) is connected to the nozzle (3), and the top of the nozzle (3) is connected to the oil outlet (4). The top of the nozzle (3) is provided with a pin (7), and one end of the pin (7) is connected to a rocker arm (8). The bottom end of the rocker arm (8) is connected to a handle (10), and the bottom end of the handle (10) is provided with a handle (9). The outside of the handle (9) is connected to an adjustment mechanism (11). The outside of the oil reservoir (1) is provided with an anti-slip sleeve (5), and the bottom end of the oil reservoir (1) is provided with a tail cap (16).

2. A manual grease gun with labor-saving function according to claim 1, characterized in that: The outer side of the grip (10) is provided with a plurality of pin holes (1001), and the bottom end of the grip (10) is provided with a slide groove (1002). The inside of the slide groove (1002) is connected to a limiting post (12), and the limiting post (12) is fixed inside the handle (9).

3. A manual grease gun with labor-saving function according to claim 1, characterized in that: The adjustment mechanism (11) includes a return spring (1103), which is connected to the handle (9). The top end of the return spring (1103) is connected to a movable plate (1102), and the top end of the movable plate (1102) is connected to a protrusion (1101). A movable shaft (1106) passes through the interior of the movable plate (1102), and a fixed plate (1104) is provided on the outside of the movable shaft (1106). One end of the movable plate (1102) is connected to an insert (1105).

4. A manual grease gun with labor-saving function according to claim 3, characterized in that: The end section of the insert (1105) is tapered, the grip (10) is located inside the handle (9), and the grip (10) is slidably connected to the limiting post (12).

5. A manual grease gun with labor-saving function according to claim 1, characterized in that: The oil reservoir (1) is connected to a pull rod (14) inside, and a support spring (15) is connected to the outside of the pull rod (14). The bottom end of the support spring (15) extends to the bottom end of the oil reservoir (1) and is connected to a handle (6). A sealing plug (13) is provided at the top of the support spring (15), and the sealing plug (13) is in close contact with the inside of the oil reservoir (1).

6. A manual grease gun with labor-saving function according to claim 1, characterized in that: The top of the connecting cover (2) is provided with a filter screen, and the surface of the sealing plug (13) is made of aluminum oxide coating.

7. A manual grease gun with labor-saving function according to claim 1, characterized in that: The outer side of the anti-slip sleeve (5) is covered with rubber, and the surface of the handle (9) is covered with anti-slip texture.

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