Grease gun hole plug structure

Abstract

To provide a grease gun hole plug structure capable of preventing erroneous operation. [Solution] The grease gun hole plug structure A includes a grease gun 1 having an upper cover 11, a tube body 12 and a press lever set 13, the tube body communicating with a grease passage 111 of the upper cover, the grease passage penetrating the upper cover in the radial direction, and the press lever set connected to the other end of the grease passage, the upper cover pivotally connected, an adjustment screw 2 having a concave head 21 and a rod body 22, the rod body connected to the other end of the grease passage of the grease gun, and a hole plug 3 connected to the concave head of the adjustment screw. The hole plug is firmly attached to the adjustment screw to prevent the adjustment screw from being arbitrarily changed with a wrench, which would affect the pressure inside the adjustment screw and the grease gun, and avoid the possibility of erroneous operation.

Description

Technical Field

[0001] The present invention relates to a lubrication tool, and more particularly to a grease gun hole plug structure that can avoid misoperation and has distinctiveness.

Background Art

[0002] According to the prior art grease gun 9, a hand tool for filling lubricating grease into mechanical equipment is used. As shown in FIG. 4, the grease gun 9 disclosed in Chinese Utility Model CN114763873A “Grease gun with adjustable pressure” is shown, which includes a gun frame 90, a blow nozzle 91, a passage 92, and a pressure rod 93. One end of the passage 92 is further provided with an adjustment screw 921. The main purpose of the adjustment screw 901 is to control the flow rate of the gun frame 90 and adjust the pressure.

[0003] However, a user who is not a person skilled in the art cannot adjust the adjustment screw 901 using the tool and cannot affect the pressure value of the gun frame 90. In addition, the adjustment screw 901 has no recognition property, and there is a possibility that the adjustment screw 901 may be turned out of curiosity or randomly. As a result, the grease of the prior art grease gun 9 may not be discharged smoothly, so it is necessary to improve the adjustment screw 901.

Summary of the Invention

[0004] In view of the above problems existing in the conventionally well-known grease gun, the present invention has made great efforts in the development of a grease gun hole plug structure, and the main object is to provide a grease gun hole plug structure that prevents misoperation by users. Another object of the present invention is to provide a grease gun hole plug structure having a warning function and the overall shape beauty of the grease gun.

[0005] To achieve the above object, the present invention applies the following technical means.

[0006] The grease gun hole plug structure includes an upper cover, a tube body, and a press lever set. The tube body is connected to the upper cover and communicates with a grease passage provided in the upper cover. The grease passage penetrates the upper cover in the radial direction. The press lever set is connected to the other end of the grease passage and is pivotally connected to the upper cover. It also includes a grease gun, an adjusting screw provided with a concave head and a rod body on the adjusting screw, and the rod body is connected to the other end of the grease passage of the grease gun, and a hole plug provided on the concave head of the adjusting screw.

[0007] The material of the hole plug is nylon.

[0008] The inner shape of the concave head of the adjusting screw is hexagonal, the outer side of the hole plug is hexagonal corresponding to the inner shape of the concave head of the adjusting screw, and the hole plug can be inserted into the concave head of the adjusting screw.

[0009] The hole plug is closely attached and fixed to the concave head of the adjusting screw.

[0010] An outlet extending in the axial direction of the grease passage of the upper cover is provided, and a nozzle is connected to the outlet.

[0011] It includes a grease storage part, and the grease storage part is arranged in the tube body.

[0012] By the above technical means, the present invention can achieve the following effects.

[0013] 1. By inserting the hole plug into the concave head of the adjusting screw, the present invention forms a smooth part that the user cannot identify as the adjusting screw. At the same time, the hole plug blocks the connection area of the adjusting screw, making it difficult to turn the adjusting screw using a wrench, and reducing the possibility of the user's incorrect operation.

[0014] 2. The present invention can block the structure of the adjusting screw by installing hole plugs of different colors or shapes and filling them into the concave head of the adjusting screw, making its surface appearance more beautiful and professional, and presenting a professional look. At the same time, it also has the function of indicating whether the adjusting screw is operable.

Brief Description of the Drawings

[0015]

Figure 1

Figure 2

Figure 3

Figure 4

Embodiments for Carrying Out the Invention

[0016] The present invention relates to a grease gun hole plug structure. FIGS. 1 and 2 show a grease gun hole plug structure provided to reduce the possibility of incorrect operation by the user, and include a grease gun 1, an adjusting screw 2, and a hole plug 3. The above components will be described below with reference to the accompanying drawings.

[0017] As shown in FIGS. 1 and 2, the grease gun 1 includes an upper cover 11, a tube body 12, and a press lever set 13. A grease storage portion 121 is provided in the tube body 12, and the grease storage portion 121 is connected to the upper cover 11 and communicates with a grease passage 111 provided inside the upper cover 11. The grease passage 111 penetrates the upper cover 11 in the radial direction, and an outlet 112 extending in the axial direction is formed in the grease passage 111. A nozzle 113 is provided at the outlet 112, and the press lever set 13 is connected to the other end of the grease passage 111 and pivotally connected to the upper cover 11.

[0018] As shown in FIG. 2, the adjusting screw 2 includes a concave head 21 and a rod body 22. The rod body 22 is connected to the other end of the grease passage 111 of the grease gun 1, and an inner hexagon 211 is provided on the concave head 21 (the inner shape of the concave portion of the concave head 21 is hexagonal).

[0019] As shown in FIGS. 1 and 2, the hole plug 3 is made of nylon. Also, the hole plug 3 is set to an outer hexagon 31 (the outer shape of the hole plug 3 is the hexagon 31), and is set to fit exactly with the concave head 21 of the adjusting screw 2.

[0020] Therefore, the present invention mainly provides a preferable solution for the grease gun hole plug structure. As shown in FIGS. 2 and 3, after the tube body 12 of the grease gun hole plug structure A replaces the grease storage portion 121, it is connected to the upper cover 11, and by generating a suction force through the press lever set 13, the grease in the grease storage portion 121 enters the grease passage 111 of the upper cover 11. The adjusting screw 2 is connected to the other end of the grease passage 111, and the grease passes through the grease passage 111 and flows out from the nozzle 113 of the outlet 112. The adjusting screw 2 has an important sealing function and pressure control function for the grease passage 111, and those skilled in the art can adjust its function according to different characteristics of the grease.

[0021] Furthermore, as shown in FIGS. 2 and 3, users who purchase the grease gun 1 often misidentify the adjustment screw 2 as an operating part and arbitrarily adjust it with a hex wrench, which may affect the pressure inside the grease gun 1 and prevent the grease from being discharged smoothly. To avoid incorrect operation by users, the outer hexagon 31 of the hole plug 3 is firmly fitted and fixed to the inner hexagon 211 of the adjustment screw 2, so that the concave head 21 is not visible from the surface of the adjustment screw 2, enhancing the aesthetic appearance of the grease gun 1 and preventing users from arbitrarily removing or adjusting the adjustment screw 2. In addition, the manufacturer can mark the hole plug 3 with different colors. For example, red indicates the setting at the time of factory shipment, orange indicates the customized setting, and yellow indicates the factory maintenance setting, etc., and different meanings can be defined for each color.

[0022] In summary, the present invention relates to a grease gun hole plug structure. Its components and structure have not been described in books, publications, or publicly used, and it meets the requirements for utility model registration. Therefore, it requests approval for registration examination.

[0023] Note that the above is the technical principle in the specific embodiment of the present invention. Changes made based on the idea of the present invention are included in the protection scope of the present invention as long as their functions and effects do not deviate from the spirit included in this specification and the drawings.

Explanation of Reference Numerals

[0024] A: Grease gun hole plug structure 1: Grease gun 11: Upper cover 111: Grease passage 112: Outlet 113: Nozzle 12: Tube body 121: Grease storage part 13: Press lever set 2: Adjustment screw 21: Concave head 211: Inner hexagon 22: Rod body 3: Hole plug 31: Outer hexagon [Well-known technology] 9: Grease gun of well-known technology 90: Gun frame 91: Blow nozzle 92: Passage 921: Adjusting screw 93: Pressure rod

Claims

1. a grease gun comprising an upper cover, a tube body and a press lever set, the tube body being connected to the upper cover and communicating with a grease passage provided in the upper cover, the grease passage passing radially through the upper cover, the press lever set being connected to the other end of the grease passage and pivotally connected to the upper cover; an adjustment screw, the adjustment screw having a concave head and a rod body, the rod body being connected to the other end of the grease passage of the grease gun; a hole plug provided in the recessed head of the adjustment screw.

2. 2. The grease gun hole plug structure of claim 1, wherein the material of the hole plug is nylon.

3. 2. The grease gun hole plug structure of claim 1, wherein the inner shape of the concave head of the adjusting screw is hexagonal, the outer side of the hole plug is hexagonal corresponding to the inner shape of the concave head of the adjusting screw, and the hole plug is insertable into the concave head of the adjusting screw.

4. 4. The grease gun hole plug structure of claim 3, wherein the hole plug is closely fixed to the recessed head of the adjustment screw.

5. 2. The grease gun hole plug structure of claim 1, wherein the top cover has an axially extending outlet, the outlet having a nozzle connected thereto.

6. The grease gun hole plug arrangement of claim 1 including a grease reservoir, said grease reservoir being disposed within said tube body.

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