JPS6215590Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a grease gun.

Generally, grease is used as a lubricant for the friction and sliding surfaces of machines such as bearings. Grease reduces friction, prevents wear and seizure, reduces power loss, and also provides cooling, sealing, and prevention. It performs functions such as rust prevention. However, when using a grease gun to supply the grease to a predetermined location, if the location is narrow, it becomes difficult to swing the operating lever of the grease gun, making it difficult to supply grease to the predetermined location. The drawback was that it was difficult to do.

It is an object of the present invention to eliminate such drawbacks and to provide a grease gun whose operation lever can be oscillated even in a narrow supply area. Therefore, the feature of the present invention is that in a grease gun that can pour out grease stored in the cylinder body by swinging the operation lever, the operation lever is separated from the lever body and the lever base. The lever base has a substantially elliptical hollow cross-sectional shape, and the tip of the lever base has an acutely inclined surface with the opening facing outward. slits are formed in the longitudinal direction of the lever body, and the lever body has a substantially elliptical cross-sectional shape, and the outer diameter dimension is set to be approximately the same as or slightly larger than the inner diameter dimension of the lever base, and the lever body is inserted into the lever body. The lever body is configured to be fixed by a fastener which is removably inserted from the inclined surface side of the lever base and tightens the slit in a direction that narrows the slit.

Hereinafter, the present invention will be explained in detail based on the illustrated embodiments.

In FIGS. 1 and 2, reference numeral 1 denotes a cylindrical body in which a container 2 containing grease is housed. 3
3 is a pressing mechanism that presses the grease as shown by arrow A, and is disposed inside the cylinder body 1;
consists of a disc-shaped pressing plate 4 and a resilient member 5 such as a coil spring that resiliently urges the pressing plate 4 upward.
and a chain 6 which is attached to the center of the back surface of the pressing plate 4 and is used to pull the pressing plate 4 as shown by arrow B against the elastic force of the resilient member 5. Reference numeral 7 denotes a bottom cover detachably attached to the lower end of the cylinder body 1, and an elastic member 5 is interposed between the press plate 4 and the bottom cover 7, and the chain 6
The lower end of the bottom cover 7 is fitted into a hole formed in the bottom cover 7, and is suspended below the cylinder body 1.

Although not shown in the hole, the chain 6
A series of small locking holes are opened to lock the
A substantially keyhole-shaped hole is formed. Then, by locking the chain 6 pulled in the direction of arrow B in the locking hole, the pressing plate 4 is disposed at a predetermined position. Reference numeral 8 denotes a stopper rotatably attached to the bottom cover 7 so as to be rotatable about a shaft 9. The stopper 8 allows the hole to be opened and closed, and the chain 6 can be engaged and detached.

Reference numeral 10 denotes an upper lid that covers the upper end of the cylinder body 1, and a hole is provided in the center of the upper lid 10, and the spout of the deformable container 2 filled with grease is inserted into this hole. The bottom surface of the container 2 is pushed up by the pressing mechanism 3 as shown by arrow A, and pouring is possible through the spout. In addition,
It can also be used when filling grease without using the container 2.

Reference numeral 16 denotes a tube portion that projects from the upper surface of the upper lid 10 in the diametrical direction, and a hole portion 17 is provided in the longitudinal direction of the tube portion 16, and the middle portion of the hole portion 17 is connected to the above-mentioned portion. It communicates with the spout.

A guide tube 18 projects upward from one end of the tube body 16, and a guide hole of the guide tube 18 is connected to the hole 17 of the tube body 16. Reference numeral 19 denotes a connector for connecting the guide tube 18 to a predetermined location when supplying grease.

Reference numeral 20 denotes a swinging arm whose one end is pivotally attached to the end of the tubular body 16 around a support shaft 21, and the swinging arm 20 is formed into a bifurcated shape, although not shown in the drawings. It is pivotally attached to both side surfaces of the tube body part 16 in a pinched manner. Further, a lever base 23 is pivotally connected to the other end of the swing arm 20 so as to be able to swing freely around a shaft 22, and a hole in the tube body portion 16 is provided at a predetermined portion of the lever base 23 near the shaft 22. A sliding rod 24 is slidably inserted into the portion 17 as shown by arrow C and is pivotally connected by a shaft 25. In this way, the sliding rod 24 serves as a plunger of the pump and discharges grease at high pressure.

26 is a lever body that is removably inserted into the lever base 23, and the lever body 26 and the lever base 23 constitute an operating lever 27. Then, by swinging the operation lever 27 in the direction of arrow D, the sliding rod 24 is moved to the direction of arrow C.
Grease is supplied from the guide hole of the guide tube 18 to a predetermined supply location.

Specifically, the lever base 23 is a tubular body with a substantially elliptical cross section, and the tip of the lever base 23 is formed with an acute inclined surface 28 so that the opening faces outward as shown in the figure. At the same time, a slit 29 is formed in the longitudinal direction of the lever base 23 from the acute angle side of the inclined surface 28. That is, the lever base 23 is formed by bending a metal plate into a tubular shape with an elliptical cross section.

The lever main body 26 is a tubular body having a substantially elliptical cross-sectional shape with an outer diameter equal to or slightly larger than the inner diameter of the lever base 23. One end is press-fitted into the distal end side of the lever base 23 by a predetermined distance. Then, the lever main body 2 is inserted into the holes 30, 30 provided near the tip of the lever base
Holes 31, 31 penetrated near the press-fit side end of 6.
The lever main body 26 is removably inserted into the lever base 23 by connecting and fixing the lever body 26 with a fastener 32 such as a bolt and nut that tightens the slit 29 in a direction that narrows the slit 29.

Since the tip of the lever base 23 is formed into an inclined surface 28 having an angle α as shown in FIG. 3, the lever body 26 can be easily inserted when the lever body 26 is attached. It is also preferable that the inclined surface 28 be formed at an even more acute angle β, as shown by the imaginary line, to further facilitate insertion of the lever body 26. 33 is the upper lid 10
This is an air vent mechanism that protrudes from the.

Next, what is shown in FIG. 4 is another connecting feature of the operating lever 27, which includes a bolt 35 having locking protrusions 34, 34 projecting from the upper end of the shaft portion 33, and the bolt 35.
A fastener 32 is constituted by a wing nut 36 which is screwed into the lever base 23, and a locking recess 3 corresponding to the locking protrusion 34 is provided in the hole 30 of the lever base 23.
7, 37 (see FIG. 3), and the locking recess 3
The locking protrusions 34, 34 are locked to the bolts 7, 37 to prevent the bolts 35 from rotating together.

FIG. 5 shows another connected state of the operating lever 27, in which a hole 38 is provided in the end of the nut 36 in the radial direction, and a thin operating rod 39 is inserted into the hole 38. By rotating the operating rod 39, it is screwed into the bolt 35, and as shown in the figure, spring washers 40, 40 are interposed at both ends of the shaft portion 33 of the bolt 35 to control the tightening state of the fastener 32. It is certain.

Next, in another embodiment shown in FIG.
... with a predetermined pitch, and on the other hand, one hole is provided in the lever body 26, and the hole 3 is inserted through the lever body 26.
Place the fourth skewer in the shape of a skewer corresponding to one of 0...
A fastener 32 or the like shown in FIGS. 5 and 5 is inserted and fixed. Therefore, the lever body 26 is connected to the lever base 2
3, the insertion depth can be adjusted in multiple stages, and the operating lever 2 as a whole
7 so that the entire length thereof can be expanded and contracted.

In another embodiment shown in FIGS. 7 and 8,
A pair of projecting pieces 4 are provided on the slit 29 side of the lever base 23.
1 and 41 are provided in a protruding manner, and the fasteners 32 shown in FIGS. 4 and 5 are inserted into the holes of both, and the insertion depth of the lever body 26 inserted into the lever base 23 can be adjusted steplessly. It is designed to be fixed at any depth. Therefore, the entire length of the operating lever 27 can be expanded and contracted steplessly. Of course, the lever body 26 can also be pulled out.

Note that if the lever main body 26 is formed of an extruded material such as aluminum or aluminum alloy having a low specific gravity, it is possible to reduce the weight.

According to the effect of the embodiment of the present invention, the lever base 2
Since the inclined surface 28 is formed at the end of the lever 26, stress concentration (bending stress) is generated on the lever body 26 at the boundary with the lever base 23 when injecting grease by swinging the operation lever 27. without occurring,
In addition, the insertion operation of the lever body 26 is easy, and a slit 29 is provided in the longitudinal direction of the lever base 23.
By providing this and cooperating with the inclined surface 28, the operation of inserting the lever main body 26 into the lever base 23 becomes even smoother. Further, the lever base 23 only needs to have a length sufficient to attach the lever body 26, and therefore can be set short, making it easy to bend the metal plate material into a tubular shape as described above.

The present invention has effectively achieved the intended purpose with the configuration detailed above. In particular, since it is composed of the lever base 23 and the lever body 26, into which the operating lever 27 is removably inserted, the lever body 26 can be attached to the lever base 2 even if the grease supply area is narrow.
3, it becomes possible to swing the lever base 23 using the lever base 23 as a gripping part as shown by the imaginary line in FIG. That is, at the maximum upward swing position of the lever base 23 (indicated by the imaginary line), if there is an allowance in the grease supply location by the distance L from the tip of the lever base 23 to the outermost end on the side of the guide tube 18. ,
Since the lever base 23 can be swung, grease can be supplied smoothly in a narrow space, which has been difficult in the past. By forming an acute-angled inclined surface 28 at the tip of the lever base 23 so that the opening faces outward, and by forming a slit 29 at the tip of the lever base 23, the outer diameter of the lever body 26 can be reduced. Even if the inner diameter dimensions of the lever base 23 and the lever base 23 are approximately the same, the lever body 26 is
It can be quickly and easily press-fitted into the hollow cross section of No. 3. Furthermore, the lever body 26 has an operating lever 27 at the connection portion or boundary portion with the lever base 23.
No stress concentration (bending stress) occurs during the swinging operation of the lever body 26, and bending and breakage of the lever body 26 can therefore be effectively prevented.

Since the lever base 23 has a substantially elliptical hollow cross-sectional shape and a longitudinal slit 29 is formed at its tip, the lever body 26 has a substantially elliptical cross-sectional shape, and its outer diameter is the same as that of the lever base 2.
By setting the inner diameter dimension to be approximately the same as or slightly larger than the inner diameter of the lever base 23, the lever base 23
By configuring the lever body 26 inserted therein to be connected and fixed, the two are in close contact with each other and become integral, and the lever body 26 is attached to the lever base 23.
can be strongly connected. Further, there is no need to provide a threaded portion on either the lever base 23 or the lever body 26, and the connecting portion between the two, and by extension, the lever body 26 and the lever base 23 both have a simple and compact structure. Furthermore, the lever main body 26 has the advantage that it can be easily manufactured by extrusion molding using a lightweight material such as an aluminum alloy. Similarly, the lever base 23 has the advantage that it can be easily manufactured by extrusion molding or the like since it is formed into a hollow cross-sectional shape having a slit 29 in the longitudinal direction. In this way, it is a device that has great practical effects.

[Brief explanation of the drawing]

Figure 1 is a side view showing one embodiment of the present invention;
The figures are a partially sectional side view, FIG. 3 is an explanatory diagram of the insertion of the operating lever, FIGS. 4 and 5 are partially sectional front views showing the connected state of the operating lever, and FIGS. 6 and 7 are FIG. 8 is an enlarged cross-sectional view taken along the line EE in FIG. 7. 23...Lever base, 26...Lever body, 2
7...Operation lever.

Claims (1)

[Scope of utility model registration request] In a grease gun that can pour out grease stored in a cylinder body by swinging an operating lever, the operating lever 27 is composed of a lever body 26 and a lever base 23, and the lever base 23 is The lever base 23 has an approximately elliptical hollow cross-sectional shape, and an acutely inclined surface 28 is formed at the tip of the lever base 23 so that the opening faces outward. A slit 29 is formed in each of the lever bodies 26, and the lever body 26 has a substantially elliptical cross-sectional shape, and its outer diameter is equal to the lever base 23.
The inner diameter is set to be approximately the same or slightly larger than the inner diameter of
The lever main body 26 is removably inserted from the slope 28 side of the lever base 23, and is inserted into the slit 29.
A grease gun characterized in that the inserted lever body 26 is fixed by a tightening tool 32 that tightens in a direction that narrows the lever body 26.