Grease gun

Abstract

The utility model provides a grease gun, and aims to solve the problems that a transmission structure between a rocking handle and a grease pushing rod on a grease gun in the prior art is too complicated, and the grease gun is very inconvenient to install and maintain. A grease gun comprises a grease storage barrel, the grease storage barrel comprises a grease storage bin and a gun head covering the grease storage bin, the gun head is provided with a grease rod cavity, a grease outlet nozzle communicated with the grease rod cavity and a grease inlet communicated with the grease storage bin and the grease rod cavity, and a grease pushing rod is arranged in the grease rod cavity in a sliding mode; the rocking handle is hinged with the oil storage barrel through a pin shaft; the hinge chain is arranged between the head end of the oil pushing rod and the rocking handle and comprises at least one chain link; when the number of the chain links is two or more, all the chain links are connected in series, the chain link located at the head end is rotationally connected with the rocking handle, the chain link located at the tail end is rotationally connected with the oil pushing rod, and every two adjacent chain links are rotationally connected. The device is simple in structure and convenient to install and maintain.

Description

Technical Field

[0001] The utility model belongs to the technical field of lubricating oil filling tools, in particular to a grease gun. Background Art

[0002] A grease gun is a hand tool for adding lubricating oil to mechanical equipment. It can be equipped with an iron gun rod (iron gun head) or a hose (flat gun head) for refueling. The grease gun has many advantages such as simple operation, easy portability, and a wide range of uses. It is a common tool for agricultural machinery operators, vehicle maintenance centers, etc. In the prior art, the oil push rod on the grease gun is reciprocated along a straight line to spray the grease in the oil storage cylinder through the oil nozzle. However, the structure used to drive the reciprocating sliding of the oil push rod on the grease gun in the prior art adopts a gear and rack structure, such as the product in patent number 2023220518802. This product structure is too complicated and very inconvenient to install and repair. Utility Model Content

[0003] The utility model provides a grease gun, aiming to solve the problem that the transmission structure between the crank handle and the oil pushing rod on the grease gun in the prior art is too complicated and very inconvenient during installation and maintenance.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0005] A grease gun, comprising:

[0006] An oil storage cylinder, the oil storage cylinder comprises an oil storage tank and a gun head covered on the oil storage tank, the gun head is provided with an oil rod cavity, an oil outlet nozzle connected with the oil rod cavity and an oil inlet connected with the oil storage tank and the oil rod cavity, and an oil push rod is slidably arranged in the oil rod cavity;

[0007] A crank handle, wherein the crank handle is hingedly connected to the oil storage cylinder via a pin; and

[0008] An articulated chain is arranged between the head end of the oil push rod and the crank handle, and the articulated chain includes at least one chain link; when there is one chain link, the two ends of the chain link are respectively rotatably connected to the oil push rod and the crank handle; when there are two or more chain links, all the chain links are connected in series, and the chain link at the head end of the articulated chain is rotatably connected to the crank handle, and the chain link at the end of the articulated chain is rotatably connected to the oil push rod, and two adjacent chain links are rotatably connected.

[0009] A further solution: each of the chain links includes a first hinged portion located at the front end of the chain link and a second hinged portion located at the rear end of the chain link, and the first hinged portion and the second hinged portion are integrally formed.

[0010] A further solution: the first hinged part is a support column, the second hinged part is a hinge groove, and the support column is connected to the hinge groove.

[0011] A further solution: each of the hinge grooves includes left and right side walls and a bottom wall located between the bottoms of the side walls.

[0012] A further solution: when there is one chain link, the support is rotatably connected to the crank handle via a pin, and the hinge slot is rotatably connected to the head end of the oil push rod via a pin;

[0013] When there are two or more chain links, all of the chain links are connected in series, and the support of the chain link located at the head end of the hinged chain is rotatably connected to the crank handle through a pin, and the hinge groove of the chain link located at the end of the hinged chain is rotatably connected to the head end of the oil push rod through a pin, and in every two adjacent chain links, the hinge groove of the chain link located on the front side and the support of the chain link located on the rear side are both rotatably connected through a pin.

[0014] A further solution: when the crank handle is turned to pull the oil push rod outward along the oil rod cavity, the hinge chain is in a bent state; when the crank handle is turned to push the oil push rod inward along the oil rod cavity to the bottom, all the links of the hinge chain are in a straight line, and of the two adjacent links, the support of the link on the rear side rests on the bottom wall of the hinge groove of the link on the front side.

[0015] Based on the above technical solution: when all the chain links and the oil pushing rod are in a straight line, the pillar and the oil pushing rod are both against the bottom wall of the hinge groove corresponding thereto, and the oil pushing rod is pushed to the bottom.

[0016] A further solution: the upper end of the crank handle is hinged to the gun head via a pin.

[0017] A further solution: a receiving groove is provided on the crank handle, and all the chain links are located in the receiving groove.

[0018] Based on the above technical solution: the above arrangement makes the structure more beautiful.

[0019] The beneficial effects of the utility model are:

[0020] The utility model is provided with a crank handle and an oil storage cylinder rotatably connected by a pin shaft, and an articulated chain is provided between the head end of the oil push rod and the crank handle, and between two adjacent chain links of the articulated chain, and the crank handle and the oil push rod are rotatably connected with chain links at corresponding positions, so that when the crank handle is turned, the chain link rotates relative to the crank handle, the oil push rod or the adjacent chain link, so that the oil push rod pulls outward or pushes oil inward along a straight line. The utility model performs power transmission through chain links, has a simpler structure, and is more convenient to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 The utility model is a schematic diagram of the cross-sectional structure of a grease gun when the oil pushing rod of the grease gun is pushed inwards to the bottom along the oil rod cavity.

[0023] Figure 2 yes Figure 1 Schematic diagram of the enlarged structure at A.

[0024] Figure 3 It is a schematic diagram of the cross-sectional structure when the oil push rod is pulled outward.

[0025] Figure 4 It is a schematic diagram of the explosion structure of the oil push rod, chain link and crank handle.

[0026] Description of the numbers in the figure:

[0027] 1- oil storage tank; 2- gun head; 21- oil inlet; 22- oil outlet nozzle; 23- oil rod cavity; 3- oil push rod; 4- chain link; 41- support; 42- hinge groove; 5- crank handle; 6- first pin shaft; 7- second pin shaft; 8- third pin shaft; 9- fourth pin shaft. DETAILED DESCRIPTION

[0028] 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. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the utility model.

[0029] like Figures 1 to 4 As shown, this embodiment provides a grease gun, comprising:

[0030] An oil storage cylinder, the oil storage cylinder comprises an oil storage tank 1 and a gun head 2 covered on the oil storage tank 1, the gun head 2 is provided with an oil rod cavity 23, an oil outlet nozzle 22 connected with the oil rod cavity 23, and an oil inlet 21 connected with the oil storage tank 1 and the oil rod cavity 23, and an oil push rod 3 is slidably arranged in the oil rod cavity 23;

[0031] A crank 5, wherein the crank 5 is hinged to the oil storage cylinder via a pin; and

[0032] An articulated chain is arranged between the head end of the oil pushing rod 3 and the crank handle 5, and the articulated chain includes at least one link 4; when there is one link 4, the two ends of the link 4 are rotatably connected to the oil pushing rod 3 and the crank handle 5 respectively; when there are two or more links 4, all the links 4 are connected in series, and the link 4 located at the head end of the articulated chain is rotatably connected to the crank handle 5, and the link 4 located at the end of the articulated chain is rotatably connected to the oil pushing rod 3, and two adjacent links 4 are rotatably connected.

[0033] In order to facilitate user operation, the upper end of the crank handle 5 is hinged to the gun head 2 through a pin shaft in this embodiment. In order to make the grease gun more beautiful, a receiving groove is provided on the crank handle 5 in this embodiment, and all the chain links 4 are located in the receiving groove.

[0034] like Figure 1 As shown in FIG. 2 , when the oil push rod 3 is pushed inwardly to the bottom along the oil rod cavity 23, all the chain links 4 and the oil push rod 3 are in a straight line. Figure 3 As shown, when the oil push rod 3 is pulled outward, the chain link 4 connected to the crank handle 5 rotates relative to the crank handle 5, the chain link 4 connected to the oil push rod 3 rotates relative to the oil push rod 3, and the two adjacent chain links 4 rotate relative to each other, thereby pulling the oil push rod 3 outward along the oil rod cavity 23 in a straight line.

[0035] In this embodiment, each of the chain links 4 includes a first hinged portion located at a head end and a second hinged portion located at a tail end, and the first hinged portion and the second hinged portion are integrally formed.

[0036] As a specific implementation method, Figures 1 to 4 As shown, the first hinged part is a pillar 41, and the second hinged part is a hinge slot 42, and the pillar 41 is connected to the hinge slot 42. Specifically, each hinge slot 42 includes left and right side walls and a bottom wall located between the bottoms of the side walls. For each link 4, the rear end of its pillar 41 is fixedly connected to the front side of the hinge slot 42.

[0037] In this embodiment, when there is one chain link 4, the support 41 is rotatably connected to the crank handle 5 via a pin, and the hinge slot 42 is rotatably connected to the head end of the oil push rod 3 via a pin;

[0038] When there are two or more chain links 4, all the chain links 4 are connected in series, and the pillar 41 of the chain link 4 at the head end of the hinge chain is rotatably connected to the crank handle 5 through a pin, and the hinge slot 42 of the chain link 4 at the end of the hinge chain is rotatably connected to the head end of the oil push rod 3 through a pin. In each of the two adjacent chain links 4, the hinge slot 42 of the chain link 4 at the front side and the pillar 41 of the chain link 4 at the rear side are both rotatably connected through a pin. Specifically, the left and right side walls of the hinge slot 42, the pillar 41 and the oil push rod 3 are all provided with through holes for the pin to pass through.

[0039] In this embodiment, in order to make the structure more optimized, this embodiment is arranged that when the crank handle 5 is turned to pull the oil push rod 3 outward along the oil rod cavity 23, the chain link 4 rotates relative to the adjacent chain link 4 or the crank handle 5 or the oil push rod 3, so that the articulated chain is in a bent state; when the crank handle 5 is turned to push the oil push rod 3 inward to the bottom along the oil rod cavity 23, all the chain links 4 of the articulated chain are in a straight line, and of the two adjacent chain links 4, the support 41 of the chain link 4 located on the rear side abuts against the bottom wall of the articulated groove 42 of the chain link 4 located on the front side. At this position, the oil push rod 3 is pushed inward into place.

[0040] In this embodiment, as a specific implementation, for example, there are two chain links 4, and the specific structure is that the upper end of the crank handle 5 is rotatably connected to the gun head 2 through the first pin 6. The chain link 4 at the head end is rotatably connected to the crank handle 5 through the second pin 7, the two chain links 4 are rotatably connected through the third pin 8, and the oil push rod 3 is rotatably connected to the chain link 4 at the tail end through the fourth pin 9.

[0041] Working principle description:

[0042] When the crank 5 is rotated away from the oil storage cylinder, the chain link 4 connected to the crank 5 rotates relative to the crank 5, and the chain link 4 connected to the oil push rod 3 rotates relative to the oil push rod 3, and two adjacent chain links 4 rotate relative to each other, thereby pulling the oil push rod 3 outward along the oil rod cavity 23 in a straight line, and the hinge chain is in a bent state. When the crank 5 is rotated toward the oil storage cylinder, the crank 5 pushes the oil push rod 3 inward along the oil rod cavity 23 through the chain link 4, so that the grease is sprayed out through the oil spray nozzle.

[0043] The present utility model is not limited to the above optional implementation modes. Under the premise of not conflicting with each other, the various schemes can be combined arbitrarily. Anyone can derive other forms of products under the inspiration of the present utility model. However, no matter what changes are made in their shapes or structures, all technical schemes that fall within the scope defined by the claims of the present utility model fall within the protection scope of the present utility model.

Claims

1. A grease gun, characterized in that: include: An oil storage cylinder, the oil storage cylinder comprises an oil storage tank and a gun head covered on the oil storage tank, the gun head is provided with an oil rod cavity, an oil outlet nozzle connected with the oil rod cavity and an oil inlet connected with the oil storage tank and the oil rod cavity, and an oil push rod is slidably arranged in the oil rod cavity; A crank handle, wherein the crank handle is hingedly connected to the oil storage cylinder via a pin; as well as, An articulated chain is arranged between the head end of the oil pushing rod and the crank handle, and the articulated chain includes at least one chain link; when there is one chain link, two ends of the chain link are rotatably connected to the oil pushing rod and the crank handle respectively; When there are two or more chain links, all the chain links are connected in series, and the chain link at the head end of the articulated chain is rotatably connected to the crank handle, the chain link at the end of the articulated chain is rotatably connected to the oil push rod, and two adjacent chain links are rotatably connected.

2. A grease gun according to claim 1, characterized in that: Each of the chain links comprises a first hinged portion located at the head end of the chain link and a second hinged portion located at the tail end of the chain link, and the first hinged portion and the second hinged portion are integrally formed.

3. A grease gun according to claim 2, characterized in that: The first hinged portion is a support column, the second hinged portion is a hinged slot, and the support column is connected to the hinged slot.

4. A grease gun according to claim 3, characterized in that: Each of the hinge grooves comprises left and right side walls and a bottom wall located between the bottoms of the side walls.

5. A grease gun according to claim 4, characterized in that: When there is one chain link, the support is rotatably connected to the crank handle via a pin, and the hinge slot is rotatably connected to the head end of the oil push rod via a pin; When there are two or more chain links, all of the chain links are connected in series, and the support of the chain link located at the head end of the hinged chain is rotatably connected to the crank handle through a pin, and the hinge groove of the chain link located at the end of the hinged chain is rotatably connected to the head end of the oil push rod through a pin, and in every two adjacent chain links, the hinge groove of the chain link located on the front side and the support of the chain link located on the rear side are both rotatably connected through a pin.

6. A grease gun according to claim 5, characterized in that: When the crank handle is turned to pull the oil push rod outward along the oil rod cavity, the hinge chain is in a bent state; when the crank handle is turned to push the oil push rod inward along the oil rod cavity to the bottom, all the links of the hinge chain are in a straight line, and of the two adjacent links, the support of the link on the rear side rests on the bottom wall of the hinge groove of the link on the front side.

7. A grease gun according to claim 1, characterized in that: The upper end of the crank handle is hinged to the gun head through a pin shaft.

8. A grease gun according to claim 1, characterized in that: The crank handle is provided with a receiving groove, and all the chain links are located in the receiving groove.

Images