High-stability grease gun

Abstract

The utility model belongs to the technical field of lubricating grease filling devices, particularly relates to a high-stability grease gun, and aims to solve the problem that a rocking handle on a grease gun in the prior art is unstable. The device comprises an oil storage barrel; the gun cover is arranged above the oil storage barrel in a covering manner; an oil pushing rod is slidably arranged on the gun cover; the rocking handle drives the oil pushing rod to slide in the gun cover through a transmission assembly; one end of the transmission assembly is connected with the rocking handle, and the other end is connected with the oil pushing rod; first meshing teeth are arranged on the transmission assembly or the oil pushing rod, second meshing teeth are arranged on the rocking handle, and the first meshing teeth are meshed with the second meshing teeth; when the oil pushing rod is driven by the rocking handle, the second meshing teeth rotate relative to the first meshing teeth. According to the utility model, a structure that the first meshing teeth are meshed with the second meshing teeth is arranged on the rotating track of the rocking handle, so that the stability of the structure between the rocking handle and the transmission assembly is improved, the stability of the rocking handle is further improved, and the service life of the rocking handle can be prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of grease filling devices, and particularly relates to a grease gun with high stability. Background Art

[0002] The working principle of a grease gun is that by pressing or pulling a crank handle, the crank handle drives a push rod through a transmission structure to slide back and forth in a straight line inside the grease gun cap, thereby squeezing the grease in the reservoir through the grease outlet on the grease gun cap. However, the crank handle on most grease guns is hinged to the grease gun cap, which is unstable, prone to shaking, and easily damaged, resulting in a short service life. Utility Model Content

[0003] The utility model provides a grease gun with high stability, aiming to solve the problem of unstable crank handle on the grease gun in the prior art.

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

[0005] The utility model provides a high-stability grease gun, comprising:

[0006] Oil storage tank;

[0007] A gun cover is arranged above the oil storage cylinder; an oil push rod is slidably arranged on the gun cover;

[0008] A crank handle drives the oil push rod to slide in the gun cover through a transmission assembly; the transmission assembly includes a transmission member, one end of which is rotatably connected to the crank handle and the other end is hingedly or fixedly connected to the oil push rod; the transmission member or the oil push rod is provided with a first meshing tooth, and the crank handle is provided with a second meshing tooth, the first meshing tooth and the second meshing tooth being meshed with each other;

[0009] When the crank handle drives the oil push rod, the second engaging tooth rotates relative to the first engaging tooth.

[0010] A further solution: a through hole is provided on one end of the transmission member connected to the crank handle;

[0011] The crank is provided with a receiving groove and a rotating shaft, the second engaging tooth and the through hole are both arranged in the receiving groove, the rotating shaft passes through the side wall of the receiving groove, the second engaging tooth and the through hole from the side, and the crank is rotatably connected to the transmission member.

[0012] Based on the above solution, the second engaging teeth and the through-hole are both disposed within the receiving slot, thereby preventing the transmission member and the second engaging teeth from occupying positions outside the crank handle, making the grease gun more compact. Furthermore, the rotating shaft passes through the sidewall of the receiving slot, the second engaging teeth, and the through-hole, enabling the crank handle to rotate relative to the transmission member, and the second engaging teeth to rotate relative to the first engaging teeth.

[0013] A further solution: the through hole is an arc-shaped hole; when the crank drives the oil push rod, the crank drives the rotating shaft to move along the through hole, and the rotating shaft drives the second engaging tooth to rotate relative to the first engaging tooth.

[0014] Based on the above solution, the through hole is an arc-shaped hole that conforms to the movement trajectory of the crank when it rotates, so that when the crank rotates relative to the transmission member, the force on the crank is transmitted to the oil push rod through the transmission member.

[0015] A further solution: when the transmission member is hinged to the oil push rod, a U-shaped groove is provided on one end of the transmission member hinged to the oil push rod, the oil push rod is inserted into the U-shaped groove, and a pin passes through the side wall of the U-shaped groove and the oil push rod from the side;

[0016] The first engaging teeth are arranged on the outer side wall of the U-shaped groove.

[0017] Based on the above solution, the hinged structure between the transmission member and the oil push rod, combined with the rotating structure between the transmission member and the crank, enables the transmission member to achieve flexible movement at multiple angles, so that the crank that moves in an arc can better drive the oil push rod that moves in a straight line through the transmission member.

[0018] A further solution: when the transmission member is fixedly connected to the oil push rod, the oil push rod and the transmission member are integrally provided, or the oil push rod is fixed to the transmission member by welding or riveting;

[0019] The first engaging tooth is provided on the transmission member, or the first engaging tooth is provided on the oil push rod.

[0020] Based on the above solution, the transmission member and the oil push rod are fixedly connected in a manner that is simple to manufacture.

[0021] A further solution: the transmission assembly includes a transmission member, and the first meshing tooth and the second meshing tooth are each provided with one or two;

[0022] When both the first meshing tooth and the second meshing tooth are provided, the second meshing tooth is located on either side of the left or right side of the transmission member, the first meshing tooth is located on the same side of the transmission member as the second meshing tooth, and the first meshing tooth and the second meshing tooth are meshed;

[0023] When there are two of each of the first meshing teeth and the second meshing teeth, the two second meshing teeth are respectively located on the left and right sides of the transmission member, and the two first meshing teeth are respectively located on the left and right sides of the transmission member, and the first meshing teeth and the second meshing teeth on the left and right sides of the transmission member are meshed with each other in a one-to-one correspondence.

[0024] Based on the above solution, the first meshing tooth and the second meshing tooth are each provided with one, which is simple in structure and can save manufacturing cost. The first meshing tooth and the second meshing tooth are each provided with two, which can improve the stability of the crank when rotating.

[0025] A further solution: the crank includes a hinged end and a handle end, the hinged end is hinged to the gun cover, and the handle end is provided with a handle.

[0026] Based on the above solution, the crank handle is hinged on the gun cover. On the one hand, it provides a rotation axis for the crank handle to rotate, so that the crank handle can be pressed or pulled outward; on the other hand, it prevents the crank handle from falling off.

[0027] A further solution is that a slideway for sliding the oil push rod is provided inside the gun cover.

[0028] Based on the above solution, the slideway provides space for the oil push rod to slide in the gun cover.

[0029] A further solution: an oil passage is further provided inside the gun cover, the oil passage including an oil inlet and an oil outlet; the oil inlet is connected to the oil storage cylinder, and the oil outlet is connected to the outside; the path of the oil passage passes through the slide, and the oil passage is connected to the slide.

[0030] Based on the above solution, the butter in the oil storage cylinder can enter the oil passage in the gun cover through the oil inlet, and then the butter in the oil passage is squeezed out through the oil outlet under the action of the oil push rod sliding in the slide.

[0031] The beneficial effects of the utility model are:

[0032] The utility model provides a second engaging tooth on the crank handle, and a first engaging tooth on the transmission assembly or the oil push rod, so that the first engaging tooth and the second engaging tooth are engaged when the crank handle is connected to the transmission assembly, and the second engaging tooth is driven to rotate relative to the first engaging tooth when the crank handle rotates. In the utility model, a structure in which the first engaging tooth and the second engaging tooth are engaged is provided on the rotation trajectory of the crank handle, which increases the structural stability between the crank handle and the transmission assembly, thereby improving the stability of the crank handle and extending the service life of the crank handle. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention 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 any creative work.

[0034] Figure 1 This is a cross-sectional view of a high-stability grease gun of the utility model;

[0035] Figure 2 This is a structural diagram of a high-stability grease gun of the utility model;

[0036] Figure 3 This is a schematic diagram of the explosion structure of a high-stability grease gun of the utility model;

[0037] Figure 4 It is a structural diagram of the transmission part in the utility model;

[0038] Figure 5 It is a front view of the first meshing tooth and the second meshing tooth in the present invention;

[0039] Figure 6 It is a sectional view of the gun cover in the utility model.

[0040] Description of the numbers in the figure:

[0041] 1-Oil reservoir; 2-Gun cover; 21-Hinged part; 22-Slideway; 23-Oil passage; 231-Oil inlet; 232-Oil outlet; 3-Crank handle; 31-Accommodation groove; 32-Handle end; 4-Second engaging tooth; 5-Transmission member; 51-Through hole; 52-Slot; 53-First engaging tooth; 6-Oil push rod; 7-Shaft; 8-Shaft hole; 9-Pin hole. DETAILED DESCRIPTION

[0042] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0043] In the description of the present invention, it should be noted that the directions or positional relationships indicated by “up and down”, “left and right”, etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and cannot be understood as a limitation on the present invention.

[0044] like Figure 1-3 As shown, this embodiment provides a high-stability grease gun, comprising:

[0045] Oil storage tank 1;

[0046] The gun cover 2 is arranged above the oil cylinder 1; an oil push rod 6 is slidably arranged on the gun cover 2;

[0047] The crank handle 3 drives the oil push rod 6 to slide in the gun cover 2 through a transmission assembly; the transmission assembly includes a transmission member 5, one end of which is rotatably connected to the crank handle and the other end is hingedly or fixedly connected to the oil push rod; the transmission member 5 or the oil push rod 6 is provided with a first meshing tooth 53, and the crank handle 3 is provided with a second meshing tooth 4, and the first meshing tooth 53 and the second meshing tooth 4 are meshed;

[0048] When the crank handle 3 drives the oil push rod 6 , the second engaging tooth 4 rotates relative to the first engaging tooth 53 .

[0049] In order to realize the connection between the transmission assembly and the crank 3, the following solutions may be adopted but are not limited to: Figure 1 、 Figure 3 and Figure 5 As shown, the transmission assembly includes a transmission member 5, and a through hole 51 is provided on one end of the transmission member 5 connected to the crank 3;

[0050] The crank 3 is provided with a receiving groove 31 and a rotating shaft 7, the second engaging tooth 4 and the through hole 51 are both arranged in the receiving groove 31, and the rotating shaft 7 passes through the side wall of the receiving groove 31, the second engaging tooth 4 and the through hole 51 from the side, and the crank 3 is rotatably connected to the transmission member 5.

[0051] Among them, a rotating shaft hole 8 is provided on the crank handle 3 at a position corresponding to the transmission member 5, and a rotating shaft hole 8 is provided on the second engaging tooth 4; the through holes 51 are all located in the accommodating groove 31, and the second engaging tooth 4 is located in the accommodating groove 31 and between the through hole 51 and the inner wall of the accommodating groove 31, and the rotating shaft 7 passes through the rotating shaft hole 8 on the crank handle 3, the rotating shaft hole 8 on the second engaging tooth 4 and the through hole 51 from the side of the crank handle 3, so as to rotationally connect the crank handle 3 with the transmission member 5, and the second engaging tooth 4 then rotates relative to the first engaging tooth 53.

[0052] The crank handle 3 is rod-shaped, the receiving groove 31 is provided on the crank handle 3 and along the direction of the crank handle 3 , and the opening of the receiving groove 31 faces the gun cover 2 .

[0053] A more specific example of the through hole 51 is that the through hole 51 is an arc-shaped hole. When the crank handle 3 drives the oil push rod 6, the crank handle 3 drives the rotating shaft 7 to move along the through hole 51, and the rotating shaft 7 drives the second meshing tooth 4 to rotate relative to the first meshing tooth 53. It should be noted that the specific shape of the arc-shaped hole conforms to the motion trajectory of the crank handle 3 when it rotates.

[0054] In order to realize the connection between the transmission assembly and the oil push rod 6, the following solutions can be adopted but are not limited to: Figure 1 and Figure 5 As shown, the transmission assembly includes a transmission member 5, and the transmission member 5 is hinged or fixedly connected to the oil push rod 6.

[0055] In the first solution, when the transmission member 5 is hinged to the oil push rod 6, a U-shaped groove is provided on one end of the transmission member 5 hinged to the oil push rod 6, and the oil push rod 6 is inserted into the U-shaped groove, with a pin passing through the side wall of the U-shaped groove and the oil push rod 6 from the side;

[0056] The first engaging teeth 53 are disposed on the outer side wall of the U-shaped groove.

[0057] Specifically, the U-shaped groove has only left and right side walls, without upper and lower side walls; the oil pusher 6 can rotate up and down when inserted into the U-shaped groove. Pin holes 9 are provided on the left and right side walls of the U-shaped groove, and the end of the oil pusher 6 that is inserted into the U-shaped groove is also provided with a pin hole 9. The pin shaft extends from the side of the U-shaped groove through the pin holes 9 on the two side walls of the U-shaped groove and the pin hole 9 of the oil pusher 6, thereby achieving an articulated connection between the transmission member 5 and the oil pusher 6.

[0058] In the first solution, when the transmission member 5 is fixedly connected to the oil push rod 6, the oil push rod 6 and the transmission member 5 are integrally provided, or the oil push rod 6 is fixed to the transmission member 5 by welding or riveting;

[0059] The first engaging tooth 53 is provided on the transmission member 5 , or the first engaging tooth 53 is provided on the oil push rod 6 .

[0060] In addition to the above solution, the fixed connection between the transmission member 5 and the oil push rod 6 can also be: Figure 4 As shown, a slot 52 is provided on the end of the transmission member 5 fixed to the oil push rod 6, and the slot 52 has a left side wall, a right side wall, an upper side wall and a lower side wall; the oil push rod 6 is inserted into the slot 52, and then a pin is passed through the side wall of the slot 52 and the oil push rod 6 from the side to fix the oil push rod 6 on the transmission member 5.

[0061] In addition, a further solution for the first meshing teeth 53 and the second meshing teeth 4 may be: the transmission assembly includes a transmission member 5, and the first meshing teeth 53 and the second meshing teeth 4 are each provided with one or two;

[0062] Specifically, when both the first meshing tooth 53 and the second meshing tooth 4 are provided, the second meshing tooth 4 is located on either side of the left or right side of the transmission member 5, and the first meshing tooth 53 is located on the same side of the transmission member 5 as the second meshing tooth 4, and the first meshing tooth 53 and the second meshing tooth 4 are meshed.

[0063] When there are two of each of the first meshing teeth 53 and the second meshing teeth 4, the two second meshing teeth 4 are respectively located on the left and right sides of the transmission member 5, and the two first meshing teeth 53 are respectively located on the left and right sides of the transmission member 5, and the first meshing teeth 53 and the second meshing teeth 4 on the left and right sides of the transmission member 5 are meshed with each other one by one.

[0064] On the basis of the above scheme, Figure 2 and Figure 3 As shown, the crank 3 includes a hinged end and a handle end 32, the hinged end is hinged to the gun cover 2, and the handle end 32 is provided with a handle. The hinged end is located above the handle section. The receiving groove 31 is located on the hinged end.

[0065] The gun cover 2 is provided with a hinge portion 21, which is integrally formed with the gun cover 2 and extends toward the outside of the gun cover 2. A pin hole 9 is provided on the hinge end at a position corresponding to the hinge portion 21. The hinge portion 21 is inserted into the receiving slot 31, and the pin shaft extends from the side of the hinge end through the pin hole 9 on the hinge end and the pin hole 9 of the hinge portion 21, thereby achieving the hinged connection between the crank handle 3 and the gun cover 2.

[0066] like Figure 6 As shown, based on the above solution, a slideway 22 for sliding the oil push rod 6 is provided inside the gun cover 2 .

[0067] In addition, an oil passage 23 is provided inside the gun cover 2, and the oil passage 23 includes an oil inlet 231 and an oil outlet 232; the oil inlet 231 is connected to the oil storage cylinder 1, and the oil outlet 232 is connected to the outside; the path of the oil passage 23 passes through the slide 22, and the oil passage 23 is connected to the slide 22.

[0068] A more specific example of the above solution is that the oil inlet 231 is located at the bottom of the gun cover 2 , and the oil outlet 232 is located on the upper surface of the gun cover 2 .

[0069] The oil passage 23 includes a first branch passage and a second branch passage. The inlet of the first branch passage is the oil inlet 231 and is connected to the oil reservoir 1; the outlet of the first branch passage is connected to the slideway 22. The inlet of the second branch passage is connected to the slideway 22, and the outlet of the second branch passage is the oil outlet 232, which is connected to the outside world.

[0070] The following is a further description of the present invention in conjunction with its working principle:

[0071] When the crank handle 3 is pressed, the crank handle 3 rotates toward the oil storage cylinder 1, and the crank handle 3 drives the rotating shaft 7 to move from the upper end of the through hole 51 to the lower end of the through hole 51. While moving along the through hole 51, the rotating shaft 7 drives the second meshing tooth 4 to rotate relative to the first meshing tooth 53. The crank handle 3 pushes the oil pushing rod 6 into the slide 22 through the transmission member 5, thereby squeezing out the butter.

[0072] When the crank handle 3 is pulled outward, the crank handle 3 rotates in the direction away from the oil storage cylinder 1, and the crank handle 3 drives the rotating shaft 7 to move from the lower end of the through hole 51 to the upper end of the through hole 51. While moving along the through hole 51, the rotating shaft 7 drives the second meshing tooth 4 to rotate relative to the first meshing tooth 53. The crank handle 3 pulls the oil push rod 6 out of the slide 22 through the transmission member 5.

[0073] The present invention is not limited to the above optional implementation methods. Under the premise of not conflicting with each other, the various solutions can be combined arbitrarily. Anyone can derive other forms of products under the inspiration of the present invention. However, no matter what changes are made in their shape or structure, all technical solutions that fall within the scope defined by the claims of the present invention fall within the scope of protection of the present invention.

Claims

1. A high stability grease gun, characterized in that: include: Oil storage tank; A gun cover is arranged above the oil storage cylinder; an oil push rod is slidably arranged on the gun cover; A crank handle drives the oil push rod to slide in the gun cover through a transmission assembly; the transmission assembly includes a transmission member, one end of which is rotatably connected to the crank handle and the other end is hingedly or fixedly connected to the oil push rod; the transmission member or the oil push rod is provided with a first meshing tooth, and the crank handle is provided with a second meshing tooth, the first meshing tooth and the second meshing tooth being meshed with each other; When the crank handle drives the oil push rod, the second engaging tooth rotates relative to the first engaging tooth.

2. A high-stability grease gun according to claim 1, characterized in that: A through hole is provided on one end of the transmission member connected to the crank handle; The crank is provided with a receiving groove and a rotating shaft, the second engaging tooth and the through hole are both arranged in the receiving groove, the rotating shaft passes through the side wall of the receiving groove, the second engaging tooth and the through hole from the side, and the crank is rotatably connected to the transmission member.

3. A high-stability grease gun according to claim 2, characterized in that: The through hole is an arc-shaped hole; when the crank drives the oil push rod, the crank drives the rotating shaft to move along the through hole, and the rotating shaft drives the second meshing tooth to rotate relative to the first meshing tooth.

4. A high-stability grease gun according to claim 1, characterized in that: When the transmission member is hinged to the oil push rod, a U-shaped groove is provided on one end of the transmission member hinged to the oil push rod, and the oil push rod is inserted into the U-shaped groove, with a pin passing through the side wall of the U-shaped groove and the oil push rod from the side; The first engaging teeth are arranged on the outer side wall of the U-shaped groove.

5. The high-stability grease gun according to claim 1, characterized in that: When the transmission member is fixedly connected to the oil push rod, the oil push rod and the transmission member are integrally provided, or the oil push rod is fixed to the transmission member by welding or riveting; The first engaging tooth is provided on the transmission member, or the first engaging tooth is provided on the oil push rod.

6. A high-stability grease gun according to claim 1, characterized in that: The first engaging teeth and the second engaging teeth are each provided with one or two; When both the first meshing tooth and the second meshing tooth are provided, the second meshing tooth is located on either side of the left or right side of the transmission member, the first meshing tooth is located on the same side of the transmission member as the second meshing tooth, and the first meshing tooth and the second meshing tooth are meshed; When there are two of each of the first meshing teeth and the second meshing teeth, the two second meshing teeth are respectively located on the left and right sides of the transmission member, and the two first meshing teeth are respectively located on the left and right sides of the transmission member, and the first meshing teeth and the second meshing teeth on the left and right sides of the transmission member are meshed with each other in a one-to-one correspondence.

7. The high-stability grease gun according to claim 1, characterized in that: The crank comprises a hinged end and a handle end, the hinged end is hinged to the gun cover, and the handle end is provided with a handle.

8. The high-stability grease gun according to claim 1, characterized in that: A slideway for sliding the oil push rod is provided inside the gun cover.

9. A high-stability grease gun according to claim 8, characterized in that: An oil passage is also provided inside the gun cover, and the oil passage includes an oil inlet and an oil outlet; the oil inlet is connected to the oil storage cylinder, and the oil outlet is connected to the outside; the path of the oil passage passes through the slideway, and the oil passage is connected to the slideway.

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