Grease gun driving device

Abstract

The utility model relates to the technical field of lubricating oil filling tools, particularly provides a grease gun driving device, and aims to solve the problem of poor flexibility when a handle in a grease gun drives a piston rod in the prior art. The device comprises a cover body, a piston rod is slidably arranged on the cover body, and a driving end is arranged on the piston rod; the top end of the handle is hinged with the cover body; the handle is connected with the driving end through the driving piece; when the handle rotates to approach the cover body, the handle drives the piston rod to slide into the cover body through the driving piece, and oil flows out of the cover body. According to the utility model, the flexibility when the handle drives the piston rod is improved, so that the piston rod slides into the cover body more easily.

Description

Technical Field

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

[0002] How to use a grease gun: By pressing the handle, the handle drives the piston rod (or oil push rod) to slide back and forth in a straight line in the grease gun cover, thereby squeezing out the grease in the oil reservoir through the oil outlet on the grease gun cover. However, when the handle is pressed, the handle moves in an arc, while the piston rod moves in a straight line. Therefore, in the existing grease gun, a transmission structure is set between the handle and the piston rod, so that the handle moving in an arc can drive the piston rod moving in a straight line. However, after the transmission structure is set between the handle and the piston rod, the handle driving the piston rod is not very flexible. Utility Model Content

[0003] The utility model provides a grease gun driving device, aiming to solve the problem of poor flexibility when a handle in a grease gun drives a piston rod in the prior art.

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

[0005] The utility model provides a grease gun driving device, comprising:

[0006] The cover body is slidably provided with a piston rod; the piston rod is provided with a driving end;

[0007] A handle, the top end of which is hinged to the cover body; the handle is connected to the driving end of the piston rod through a driving member;

[0008] When the handle rotates and approaches the cover body, the handle drives the piston rod to slide into the cover body through the driving member, and the cover body discharges oil.

[0009] A further solution: the driving member includes a rotating end and a hinged end; the driving member is rotatably connected to the handle via the rotating end, and the driving member is hinged to the piston rod via the hinged end.

[0010] Based on the above solution, the driving member located between the handle and the piston rod can realize flexible movement at multiple angles, so that the handle that moves in an arc drives the piston rod that moves in a straight line through the driving member.

[0011] A further solution: the driving member includes a rotating end and a fixed end; the driving member is rotatably connected to the handle via the rotating end, and the driving member is fixedly connected to the piston rod via the fixed end.

[0012] Based on the above scheme, since the driving member is rotatably connected to the handle, the driving member can realize flexible movement at multiple angles and will not be affected by the handle moving in an arc. Therefore, the driving member can also be fixedly connected to the piston rod without affecting the linear movement of the piston rod.

[0013] A further solution: the driving member includes a rotating end and a hinged end; a chain with at least one link is provided between the hinged end and the piston rod.

[0014] Based on the above solution, when the handle is pressed or pulled outward, the chain between the hinged end and the piston rod rotates relative to the drive member and the piston rod, so that the piston rod slides in the cover body along a straight line.

[0015] A further solution is that a rotating hole is provided on the rotating end, the rotating end is arranged in the handle, and a pin shaft passes through the handle and the rotating hole from the side, so that the rotating end is rotatably connected with the handle.

[0016] Based on the above solution, the rotational connection between the rotation end and the handle can be achieved by passing the pin through the handle and the rotation hole, and the structure is relatively simple.

[0017] A further solution: the rotating hole is an arc-shaped hole arranged in the up and down directions; when the handle is pulled outward or pushed inward, the handle rotates relative to the driving member, and the handle drives the pin shaft to move along the rotating hole.

[0018] Based on the above scheme, the rotating hole is an arc-shaped hole arranged in the up and down directions, which conforms to the movement trajectory of the handle when it is pressed or pulled outward, so that the handle can rotate relative to the driving member, and the force on the handle can be transmitted to the piston rod through the driving member.

[0019] A further solution: the handle is provided with a receiving groove arranged along the direction of the handle, and the opening of the receiving groove faces the cover body; the rotating end is located in the receiving groove.

[0020] Based on the above solution, the rotating end is located in the accommodating groove, which prevents the driving member from occupying the outer position on the handle, making the structure of the grease gun driving device more compact.

[0021] A further solution is that a connecting portion is provided on the cover body; the connecting portion is inserted into the accommodating groove, and a pin shaft passes through the handle and the connecting portion from the side, and the top end of the handle is hinged to the cover body.

[0022] Based on the above solution, the handle is hinged to the cover body, and when the handle is pressed or pulled outward, on the one hand, a stable rotation axis is provided for the handle; on the other hand, the handle is prevented from falling off.

[0023] A further solution: the hinged end is a slot, the driving end of the piston rod is inserted into the slot, and a pin passes through the side wall of the slot and the driving end of the piston rod from the side, so that the hinged end is hinged to the piston rod.

[0024] Based on the above solution, the hinged connection between the hinged end and the piston rod can be achieved by passing the pin through the side wall of the slot and the driving end of the piston rod, and the structure is relatively simple.

[0025] A further solution: the slot is a U-shaped slot formed by two baffles; the ends of the two baffles are respectively fixed on the left and right sides of the rotating end and extend outward to form the slot.

[0026] Based on the above solution, the card slot is composed of two baffles, which has a simple structure and a simple manufacturing process, and can reduce production costs.

[0027] The beneficial effects of the utility model are:

[0028] The utility model adds the driving member between the handle and the piston rod, and the handle drives the piston rod through the driving member, which not only enables the power in the arc direction generated by the handle during movement to be converted into power in the linear direction through the driving member, thus completing the transmission of force, and further enables the handle to drive the piston rod through the driving member to slide into the cover body to squeeze out the butter; and the handle drives the piston rod more flexibly, making it easier for the piston rod to slide into the cover body.

[0029] In addition, the top end of the handle is hinged to the cover body to form a simple and effective lever mechanism, which provides a rotation axis for the handle and completes the action of pressing the handle, thereby allowing the handle to drive the piston rod to slide into the cover body through the driving member. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] 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.

[0031] Figure 1 It is a cross-sectional schematic diagram of a grease gun driving device of the utility model;

[0032] Figure 2 yes Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0033] Figure 3 It is a structural schematic diagram of a grease gun driving device of the utility model;

[0034] Figure 4 It is a schematic diagram of the explosion structure of a grease gun driving device of the utility model;

[0035] Figure 5 It is a cross-sectional schematic diagram of the cover body in the utility model.

[0036] Description of the numbers in the figure:

[0037] 1-handle; 11-installation part; 12-grip part; 13-accommodation groove; 2-driving member; 21-rotation hole; 22-slot; 23-baffle; 3-piston rod; 4-cover body; 41-connecting part; 42-piston chamber; 43-oil outlet; 44-oil outlet channel; 5-pin hole. DETAILED DESCRIPTION

[0038] 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.

[0039] In the description of the present invention, it should be noted that the directions or positional relationships indicated by "top", "up and down", "left and right", etc. are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and cannot be understood as limitations on the present invention.

[0040] like Figure 1 and Figure 2 As shown, this embodiment provides a grease gun driving device, comprising:

[0041] The cover body 4 is slidably provided with a piston rod 3; the piston rod 3 is provided with a driving end;

[0042] A handle 1, the top end of which is hinged to the cover body 4; the handle 1 is connected to the driving end of the piston rod 3 through a driving member 2;

[0043] When the handle 1 rotates and approaches the cover body 4 , the handle 1 drives the piston rod 3 to slide into the cover body 4 through the driving member 2 , and the cover body 4 discharges oil.

[0044] In order to realize the structure of the handle 1 and the piston rod 3 through the driving member 2, a first scheme of the driving member 2 is: the driving member 2 includes a rotating end and a hinged end; the driving member 2 is rotatably connected to the handle 1 through the rotating end, and the driving member 2 is hinged to the piston rod 3 through the hinged end.

[0045] In which, the driving member 2 is located between the handle 1 and the cover body 4, and the rotating end and the hinged end are respectively located on opposite sides of the driving member 2, that is, the rotating end is located on the side of the driving member 2 close to the handle 1, and the hinged end is located on the side of the driving member 2 close to the cover body 4.

[0046] The second solution of the driving member 2: the driving member 2 includes a rotating end and a fixed end; the driving member 2 is rotatably connected to the handle 1 through the rotating end, and the driving member 2 is fixedly connected to the piston rod 3 through the fixed end.

[0047] The driving member 2 is located between the handle 1 and the cover 4, the rotating end is located on the side of the driving member 2 close to the handle 1, and the fixed end is the end of the driving member 2 opposite to the rotating end. The fixed end is integrally provided with the piston rod 3, or the piston rod 3 is fixed to the fixed end by welding or riveting.

[0048] like Figure 3 and Figure 4 As shown, a further example of the rotating end is: a rotating hole 21 is provided on the rotating end, the rotating end is arranged in the handle 1, and a pin shaft passes through the handle 1 and the rotating hole 21 from the side, so that the rotating end is rotatably connected with the handle 1.

[0049] As a preferred embodiment, the shape of the rotating hole 21 can be: the rotating hole 21 is an arc hole arranged in the up and down directions; when the handle 1 is pulled outward or pushed inward, the handle 1 rotates relative to the driving member 2, and the handle 1 drives the pin shaft to move along the rotating hole 21.

[0050] like Figure 3 As shown, the handle 1 is provided with a receiving groove 13 arranged along the direction of the handle 1 , and the opening of the receiving groove 13 faces the cover body 4 ; the rotating end is located in the receiving groove 13 .

[0051] Specifically, the handle 1 includes a mounting portion 11 and a grip portion 12. The handle 1 is in an elongated strip shape, and the mounting portion 11 is located in the upper region of the handle 1, and the grip portion 12 is located in the lower region of the handle 1. The receiving groove 13 is provided on the handle 1 and is provided along the direction of the handle 1; wherein the cross section of the mounting portion 11 is in a U shape, and the cross section of the grip portion 12 is in an unclosed circle.

[0052] A pin hole 5 is provided on the mounting portion 11 at a position corresponding to the rotating end. The rotating end is arranged in the accommodating groove 13, and a pin shaft passes through the pin hole 5 on the mounting portion 11 and the rotating hole 21 to rotatably connect the rotating end to the handle 1.

[0053] like Figure 4 As shown, a further example of the rotating end is: the hinged end is a slot 22, the driving end of the piston rod 3 is inserted into the slot 22, and the hinged end is hinged to the piston rod 3 through a pin shaft passing through the side wall of the slot 22 and the driving end of the piston rod 3 from the side.

[0054] The slot 22 is a U-shaped slot formed by two baffles 23 ; the ends of the two baffles 23 are respectively fixed on the left and right sides of the rotating end and extend outward to form the slot 22 .

[0055] It should be noted that: the two baffles 23 are integrally provided with the rotating end, or the two baffles 23 are fixed to the left and right sides of the rotating end by welding or riveting.

[0056] Specifically, a pin hole 5 is provided on the driving end of the piston rod 3, and a pin hole 5 is provided on the left and right side walls of the slot 22, that is, on the two baffles 23; the driving end of the piston rod 3 is inserted into the slot 22, and the hinged end is hinged to the piston rod 3 by passing a pin shaft through the pin hole 5 on the side wall of the slot 22 and the pin hole 5 on the driving end of the piston rod 3.

[0057] On the basis of the above solution, the driving member 2 includes a rotating end and a hinged end; a chain with at least one link is provided between the hinged end and the piston rod 3 .

[0058] Specifically, when there is one link on the chain, the two ends of the link are rotatably connected to the hinge end and the piston rod 3 respectively; when there are two or more links on the chain, all the links are connected in series, and the link at the head end of the chain is rotatably connected to the hinge end, the link at the end of the chain is rotatably connected to the piston rod 3, and two adjacent links are rotatably connected.

[0059] A more specific example of the cover body 4 is as follows: a connecting portion 41 is provided on the cover body 4; the connecting portion 41 is inserted into the receiving groove 13, and a pin shaft passes through the handle 1 and the connecting portion 41 from the side, and the top end of the handle 1 is hinged to the cover body 4.

[0060] Among them, a pin hole 5 is provided on the connecting portion 41, and a pin hole 5 is provided at a position corresponding to the connecting portion 41 on the mounting portion 11. The connecting portion 41 is arranged in the accommodating groove 13, and a pin shaft passes through the pin hole 5 on the mounting portion 11 and the pin hole 5 on the connecting portion 41, so that the cover body 4 and the handle 1 are hinged together.

[0061] In addition, if Figure 5 As shown, the cover body 4 is provided with a piston cavity 42 for slidingly inserting the piston rod 3. The cover body 4 is provided with an oil outlet 43 on its surface, and the oil outlet 43 is communicated with the piston cavity 42.

[0062] The cover body 4 is further provided with an oil outlet passage 44 extending from the bottom of the cover body 4 to the oil outlet 43 , and the oil outlet passage 44 passes through the piston cavity 42 and is in communication with the piston cavity 42 .

[0063] The utility model is further described below through the working principle:

[0064] When the handle 1 is pressed toward the cover body 4, the handle 1 pushes the piston rod 3 to slide into the piston cavity 42 through the driving member 2, so that the butter in the oil outlet channel 44 is squeezed out through the oil outlet 43. When the handle 1 is pulled outward in a direction away from the cover body 4, the handle 1 pulls the piston rod 3 out of the piston cavity 42 through the driving member 2.

[0065] 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 driving device, characterized in that: include: The cover body is slidably provided with a piston rod; the piston rod is provided with a driving end; A handle, the top end of which is hinged to the cover body; the handle is connected to the driving end of the piston rod through a driving member; When the handle rotates and approaches the cover body, the handle drives the piston rod to slide into the cover body through the driving member, and the cover body discharges oil.

2. A grease gun driving device according to claim 1, characterized in that: The driving member comprises a rotating end and a hinged end; the driving member is rotatably connected to the handle via the rotating end, and the driving member is hinged to the piston rod via the hinged end.

3. A grease gun driving device according to claim 1, characterized in that: The driving member comprises a rotating end and a fixed end; the driving member is rotatably connected to the handle via the rotating end, and the driving member is fixedly connected to the piston rod via the fixed end.

4. A grease gun driving device according to claim 1, characterized in that: The driving member comprises a rotating end and a hinged end; a chain with at least one chain link is arranged between the hinged end and the piston rod.

5. A grease gun driving device according to claim 2, 3 or 4, characterized in that: A rotating hole is provided on the rotating end, and the rotating end is arranged in the handle. A pin shaft passes through the handle and the rotating hole from the side, and the rotating end is rotatably connected with the handle.

6. A grease gun driving device according to claim 5, characterized in that: The rotating hole is an arc-shaped hole arranged in the up-down direction; when the handle is pulled outward or pushed inward, the handle rotates relative to the driving member, and the handle drives the pin shaft to move along the rotating hole.

7. A grease gun driving device according to claim 5, characterized in that: The handle is provided with a receiving groove arranged along the direction of the handle, and the opening of the receiving groove faces the cover body; the rotating end is located in the receiving groove.

8. A grease gun driving device according to claim 7, characterized in that: The cover body is provided with a connecting portion; the connecting portion is inserted into the accommodating groove, and a pin shaft passes through the handle and the connecting portion from the side, and the top end of the handle is hinged to the cover body.

9. A grease gun driving device according to claim 2, characterized in that: The hinged end is a slot, the driving end of the piston rod is inserted into the slot, and the hinged end is hinged to the piston rod through a pin that passes through the side wall of the slot and the driving end of the piston rod from the side.

10. A grease gun driving device according to claim 9, characterized in that: The slot is a U-shaped slot formed by two baffles; the ends of the two baffles are respectively fixed on the left and right sides of the rotating end and extend outward to form the slot.

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