A greasing device for feeding grease to a greasing requiring part accommodated inside a housing, the greasing device including: a first jig; a second jig; and a greasing portion, wherein the first jig has a base portion that abuts on the housing, and an insertion hole that penetrates the base portion, the second jig has an insertion portion that is inserted into the insertion hole of the first jig, and a stopper portion that comes into abutment on the base portion of the first jig when the insertion portion is inserted into the insertion hole, and the greasing portion feeds grease to the greasing requiring part while being positioned by the first jig and the second jig.

A holding member configured to hold an injection portion and an imaging unit of an insertion portion in a state in which the injection portion and the imaging unit are arranged side by side includes an injection-portion insertion portion configured such that the injection portion is press-fitted into the injection-portion insertion portion and an imaging-unit insertion portion configured such that the imaging unit is press-fitted into the imaging-unit insertion portion. The insertion portion is configured to be inserted toward a corresponding portion in a narrow space while being gripped by an operator. The injection portion has a cylindrical shape and is provided with a fluid substance injection port at a tip end portion. The imaging unit has a cylindrical shape and is configured to capture an image including the tip end portion of the injection portion and its surrounding environment.

A holding member configured to hold an injection portion and an imaging unit of an insertion portion in a state in which the injection portion and the imaging unit are arranged side by side includes an injection-portion insertion portion configured such that the injection portion is press-fitted into the injection-portion insertion portion and an imaging-unit insertion portion configured such that the imaging unit is press-fitted into the imaging-unit insertion portion. The insertion portion is configured to be inserted toward a corresponding portion in a narrow space while being gripped by an operator. The injection portion has a cylindrical shape and is provided with a fluid substance injection port at a tip end portion. The imaging unit has a cylindrical shape and is configured to capture an image including the tip end portion of the injection portion and its surrounding environment.

An ejection device includes an insertion portion that is held by an operator and inserted toward a relevant portion in a narrow space. The insertion portion includes an ejection unit that is a fluidic substance supply pipe of which distal end portion is closed. A side surface of the distal end portion of the ejection unit includes at least one fluidic substance ejection port that extends from an outer peripheral surface to an inner peripheral surface of the distal end portion and from which a fluidic substance to be supplied through the ejection unit is ejected.

An ejection device includes an insertion portion that is held by an operator and inserted toward a relevant portion in a narrow space. The insertion portion includes an ejection unit that is a fluidic substance supply pipe of which distal end portion is closed. A side surface of the distal end portion of the ejection unit includes at least one fluidic substance ejection port that extends from an outer peripheral surface to an inner peripheral surface of the distal end portion and from which a fluidic substance to be supplied through the ejection unit is ejected.

A lubricating can has a grease cup, bolt, piston, pressing base, bearing placement portion and a rotation driving component. The fixed end of the bolt is fixed on the grease cup bottom. The piston is housed inside the lubricating trough. The piston has a pressing surface, a bearing surface and a lateral ring surface that is tightly fitted on and can slide along the inner wall. The center of the piston is formed with a through hole and a plurality of lubricating guide holes. The through hole is sheathed on the bolt. The lower end pressing portion of the pressing base has a screw hole to fit the bolt. The bearing placement portion is defined and formed by the space between the lower end pressing portion and the bearing surface of the piston. The rotation driving component is configured on the upper end bearing portion of the pressing base.

A lubricating can has a grease cup, bolt, piston, pressing base, bearing placement portion and a rotation driving component. The fixed end of the bolt is fixed on the grease cup bottom. The piston is housed inside the lubricating trough. The piston has a pressing surface, a bearing surface and a lateral ring surface that is tightly fitted on and can slide along the inner wall. The center of the piston is formed with a through hole and a plurality of lubricating guide holes. The through hole is sheathed on the bolt. The lower end pressing portion of the pressing base has a screw hole to fit the bolt. The bearing placement portion is defined and formed by the space between the lower end pressing portion and the bearing surface of the piston. The rotation driving component is configured on the upper end bearing portion of the pressing base.

A lubricant applicator for a ball hitch includes a diaphragm assembly, a hollow support structure, and preferably, a removable cover. The diaphragm assembly includes a diaphragm member and may also include a peripheral sidewall. The diaphragm member has a non-permeable top surface having an inner facing surface and an outer facing surface. A central region of the inner facing surface is coated with lubricant that is releasable from the inner facing surface when pressed against an external surface and, optionally, rotated slightly. The hollow support structure has a peripheral sidewall. The diaphragm assembly is positionally secured within the hollow support structure to provide a unitary structure. The lubricant-coated central region of the diaphragm member is configured to deform and partially encapsulate at least an upper portion of the ball hitch when the lubricant applicator is centered over the ball hitch and pressed down over the ball hitch to allow release and transfer of at least a portion of the lubricant from the inner facing surface of the diaphragm member to the at least upper portion of the ball hitch.

A lubricant applicator for a ball hitch includes a diaphragm assembly, a hollow support structure, and preferably, a removable cover. The diaphragm assembly includes a diaphragm member and may also include a peripheral sidewall. The diaphragm member has a non-permeable top surface having an inner facing surface and an outer facing surface. A central region of the inner facing surface is coated with lubricant that is releasable from the inner facing surface when pressed against an external surface and, optionally, rotated slightly. The hollow support structure has a peripheral sidewall. The diaphragm assembly is positionally secured within the hollow support structure to provide a unitary structure. The lubricant-coated central region of the diaphragm member is configured to deform and partially encapsulate at least an upper portion of the ball hitch when the lubricant applicator is centered over the ball hitch and pressed down over the ball hitch to allow release and transfer of at least a portion of the lubricant from the inner facing surface of the diaphragm member to the at least upper portion of the ball hitch.

The present invention provides a quick-injection grease filling device, which features including an oil cup, a detachable guide seat, a screw, a piston, an oppression part and a rotating drive part. The piston is held inside the oil tank, capable of moving upward and downward. The piston has an oppression surface and a bearing placement surface. The detachable guide seat includes a combination part and a screw hole, and the combination part is attached to the cup mouth through a detachable assembly unit. The inner end of the screw extends into the oil cup, and the outward extending end extends out of the cup mouth. The rotation driving part is arranged on the outward extending end. The oppression part can move forward and backward along with the screw. The oppression part is used to press against the bearing.