US 12,331,878 B2
Electric double-rod grease gun
Liping Li, Yongkang (CN)
Assigned to Zhejiang Suoli Industry and Trade Co., Ltd., Lishui (CN)
Filed by Zhejiang Suoli Industry and Trade Co., Ltd., Lishui (CN)
Filed on Apr. 29, 2024, as Appl. No. 18/649,548.
Claims priority of application No. 202321248536.6 (CN), filed on May 22, 2023.
Prior Publication US 2024/0392917 A1, Nov. 28, 2024
Int. Cl. F16N 13/06 (2006.01); F16N 3/12 (2006.01)
CPC F16N 13/06 (2013.01) [F16N 3/12 (2013.01); F16N 2013/063 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An electric double-rod grease gun, comprising:
an oil storage tank, which is stored with grease;
a plunger pump, which comprises a pump body connected to the oil storage tank; the pump body is provided with a first plunger chamber and a second plunger chamber that are arranged parallely in a horizontal direction and are connected to the oil storage tank; the first plunger chamber is slidably sleeved with a first plunger rod, the second plunger chamber is slidably sleeved with a second plunger rod, the pump body is further provided with an oil outlet nozzle connected to the first plunger chamber and the second plunger chamber;
a driving device, which comprises a driving motor that drives a main transmission gear to rotate through a reduction mechanism; a first secondary transmission gear and a second secondary transmission gear that are respectively meshed with the main transmission gear, both the first secondary transmission gear and the second secondary transmission gear rotate synchronously with the main transmission gear; a first eccentric shaft and a second eccentric shaft that are respectively eccentrically provided on the first secondary transmission gear and second secondary transmission gear; a first connection rod, where two ends of the first connection rod are movably connected to the first eccentric shaft and the first plunger rod; a second connection rod, where two ends of the second connection rod are movably connected to the second eccentric shaft and the second plunger rod;
wherein the first connection rod and the second connection rod can respectively drive the first plunger rod and the second plunger rod to perform asynchronous linear reciprocating motion in the corresponding first plunger chamber and the second plunger chamber.