JP3161440U - Grease pump - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make an oil cylinder easily attachable / detachable with one touch in a cartridge type grease pump and to withstand long-term use. SOLUTION: A plurality of guide grooves 16 that are bent in a substantially hook shape are formed in the lower edge portion of the cap 10 by cutting out in the same direction, and the guide groove 16 of the cap 10 is formed on the peripheral surface of the upper end portion of the oil cylinder 20. A plurality of protrusions 26 of a size that can be fitted into the are formed. When the protrusion 26 is fitted into the guide groove 16 and the oil cylinder 20 is rotated to the back in the bending direction of the guide groove 16, the protrusion 26 is pressed against the guide groove 16 by the urging force of the compression spring 24 and is hooked. [Selection] Figure 1

Description

  The present invention relates to a cartridge-type grease pump for supplying grease to a lubricated portion of a machine, and more particularly to an oil cylinder detaching structure for accommodating a grease cartridge.

  A conventional grease pump has a cylindrical oil cylinder that accommodates a grease cartridge, a compression spring that pressurizes the grease cartridge accommodated in the oil cylinder and pushes out the grease, and an oil cylinder connected to the mouth of the grease cartridge. A cap that is detachably attached to the upper end of the cylinder, a cylinder that is integrally provided in the cap so as to communicate with the mouth portion of the connected grease cartridge, a nozzle that communicates with the cylinder, and a piston that moves forward and backward within the cylinder And a lever that presses the piston to pump the grease that has flowed into the cylinder to the nozzle. In general, the cap and the oil cylinder are screwed together with a screw (for example, see Patent Document 1).

  By the way, in the structure of the above-described technique, there is a problem that it is necessary to rotate the oil cylinder many times when exchanging the grease cartridge, and it takes time and effort to detach it. In addition, when the screw is repeatedly deformed or broken due to repeated screwing, not only the oil cylinder but also a nozzle, a lever or the like provided integrally with the cap may not be used.

Utility Model Registration No. 3120072

  The problem to be solved by the present invention is to solve these conventional problems, to make it easy to attach and detach the oil cylinder with one touch, and to withstand long-term use.

The configuration of the present invention that solves this problem is as follows.
1) A cylindrical oil cylinder that accommodates the grease cartridge, a compression spring that pressurizes the grease cartridge accommodated in the oil cylinder and pushes out the grease, and a mouth portion of the grease cartridge are connected to the upper end of the oil cylinder. A cap that is detachably attached, a cylinder that is integrally provided in the cap so as to communicate with the mouth portion of the connected grease cartridge, a nozzle that is provided in communication with the cylinder, a piston that moves forward and backward in the cylinder, and the piston In the grease pump that consists of a lever that presses the grease that has flowed into the cylinder and pumps it to the nozzle, a plurality of guide grooves that are bent in a substantially hook shape are cut out in the same direction at the lower edge of the cap, A plurality of protrusions of a size that can be fitted into the guide groove of the cap are formed on the peripheral surface of the upper end of the oil cylinder, and the protrusions are guided. The grease pump is characterized in that when the oil cylinder is inserted into the groove and the oil cylinder is rotated to the back in the bending direction of the guide groove, the protrusion is pressed against the guide groove by the urging force of the compression spring. is there.

  According to the present invention, when the protrusion of the oil cylinder is inserted into the guide groove of the cap and the oil cylinder is rotated to the back in the bending direction of the guide groove, the protrusion is pressed against the guide groove by the bias of the compression spring and is latched. Is done. Therefore, it is not necessary to rotate the oil cylinder many times as in the prior art, and the oil cylinder can be easily attached with one touch with a little rotation operation, and the workability is excellent. Also, the mounting state of the oil cylinder is held as strong as the mounting by the screw of the prior art by the biasing of the compression spring, and does not easily come off during lubrication. Further, the protrusion and the guide groove are unlikely to be deformed or damaged like a screw, and even if they are slightly damaged, they do not interfere with the removal and withstand long-term use.

It is a partially notched explanatory drawing of the grease pump of an Example. It is an enlarged view of the removal | desorption part of the cap and oil cylinder of an Example. It is explanatory drawing which shows the attachment procedure of the oil cylinder of an Example.

  Hereinafter, the form for implementing this invention is concretely demonstrated based on an Example and drawing.

  FIG. 1 is a partially cutaway explanatory view of a grease pump according to an embodiment, FIG. 2 is an enlarged view of a detachable portion of a cap and an oil cylinder according to the embodiment, and FIG. 3 is an explanatory view showing a procedure for attaching the oil cylinder according to the embodiment. . In the figure, 10 is a cap, 11 is a connection port, 12 is a cylinder, 13 is a nozzle, 14 is a piston, 15 is a lever, 16 is a guide groove, 20 is an oil cylinder, 21 is a through hole, 22 is a latching groove, 23 Is a push plate, 24 is a compression spring, 25 is a chain, 26 is a protrusion, and 30 is a grease cartridge.

  As shown in FIGS. 1 and 2, the cap 10 includes a connection port 11 for screwing a mouth portion of the grease cartridge 30, a cylinder 12 formed integrally with the connection port 11, and the cylinder 12. And a piston 14 disposed in the cylinder 12 and a lever 15 for moving the piston 14 back and forth. On the lower edge of the pump body 10, guide grooves 16 that are bent in a substantially hook shape are formed in the same direction by cutting them out at three equal intervals.

  The oil cylinder 20 has a cylindrical shape in which an upper side is opened and a through hole 21 and a retaining groove 22 are formed on a bottom surface, and a push plate 23 that can move the internal space in the vertical direction, and the push plate 23 is biased upward. And a chain 25 connected to the lower surface of the push plate 23 and pulling the push plate 23 downward. The through hole 21 is for allowing the chain 25 to pass therethrough, and the latching groove 22 is for hooking the middle part of the chain 25. On the peripheral surface of the upper end portion of the oil cylinder 20, three protrusions 26 of a size that can be fitted into the guide groove 16 of the cap 10 are formed at equal intervals.

  Hereinafter, the detachment of the oil cylinder 20 will be described. The mouth portion of the grease cartridge 30 is screwed into the connection port 11 of the cap 10. The push plate 23 is moved downward by pulling the chain 25 of the oil cylinder 20, the middle portion of the chain 25 is hooked on the latch groove 22, the push plate 23 is fixed at the lowest position, and the grease cartridge 30 is placed in the oil cylinder 20. Forming a space for accommodating

  As shown in FIG. 3A, while the grease cartridge 30 is housed in the oil cylinder 20, the protrusion 26 is fitted into the guide groove 16 of the cap 10, and as shown in FIG. Is rotated to the back in the bending direction of the guide groove 16 to release the hand from the oil cylinder 20. The oil cylinder 20 tends to be separated from the cap 10 by the urging force of the compression spring 24, but the protrusion 26 is pressed against the guide groove 16 and latched as shown in FIG. In this way, the oil cylinder 20 can be easily attached with a single touch with a little rotation, and the workability is excellent. Further, the attached state of the oil cylinder 20 is also firmly held by the bias of the compression spring 24 and does not come off due to some impact.

  When the chain 25 is removed from the retaining groove 22, the push plate 23 comes into contact with the bottom surface of the grease cartridge 30 by the urging force of the compression spring 24 and pressurizes in the contraction direction, thereby pushing out the internal grease. When the lever 15 is operated in the direction in which the piston 14 moves backward in this state, the grease is pushed out by the negative pressure and the urging force of the compression spring 24 and flows to the cylinder 12, and then when the lever 15 is operated in the reverse direction, the piston 14 is moved. The grease in the cylinder 12 is pushed out and pressed out from the nozzle 13 and can be supplied to the lubricated portion of the machine.

  When replacing the grease cartridge 30 with a new one, the oil cylinder 20 is once pressed against the cap 10 against the urging force of the compression spring 24, and then the oil cylinder 20 is slightly rotated in the opposite direction to the compression spring 24. The protrusion 26 is detached from the guide groove 16 by the urging, and the oil cylinder 20 can be removed. In this way, the oil cylinder 20 can be easily removed with one touch.

  The technology of the present invention can be applied not only to grease but also to a cartridge type pump for various stickers.

DESCRIPTION OF SYMBOLS 10 Cap 11 Connection port 12 Cylinder 13 Nozzle 14 Piston 15 Lever 16 Guide groove 20 Oil cylinder 21 Through hole 22 Latch groove 23 Push plate 24 Compression spring 25 Chain 26 Protrusion 30 Grease cartridge

Claims (1)

  A cylindrical oil cylinder that houses the grease cartridge, a compression spring that pressurizes the grease cartridge housed in the oil cylinder and pushes out the grease, and the mouth of the grease cartridge can be connected to the top of the oil cylinder. A cap that is attached to the cap, a cylinder that is integrally provided in the cap so as to communicate with the mouth portion of the connected grease cartridge, a nozzle that is provided in communication with the cylinder, a piston that advances and retreats in the cylinder, and the piston is pushed. In a grease pump composed of a lever that pumps the grease that has flowed into the cylinder to the nozzle, a plurality of guide grooves that are bent substantially in the shape of hooks are cut out in the same direction on the lower edge of the cap. A plurality of protrusions large enough to fit into the guide groove of the cap are formed on the peripheral surface of the upper end portion of the cap, and the protrusion is used as the guide groove. ON and is characterized in that as the projections and rotate the oil cylinder in the bending direction of the guide groove deep portion is hooked pressed against the urging force of the compression spring in the guide groove, the grease pump.

Images