JPH081022U - Adapter for grease container - Google Patents

Abstract

(57) [Abstract] [Problem] The structure is simple and easy to manufacture.
It also provides a practical adapter with good sealing properties and easy handling. SOLUTION: A cylindrical shape is provided, and an inner peripheral surface thereof has a female screw 27 to be screwed with a male screw of a mating member to be supplied with grease, and an outer peripheral surface corresponding to the female screw 27 has a grease container 28.
Has a flange-shaped stopper 26 that is tightly fitted to the inner peripheral surface of the head portion 31 and is in contact with the head end surface.
An adapter for connecting the grease container and the mating member.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to an adapter for a grease container. More specifically, the present invention relates to an adapter for a grease container for supplying grease to an automatic grease supply device mounted on an automobile such as a truck.

[0002]

[Prior art]

 Conventionally, an automatic grease supply device has been used to automatically supply grease to a large number of bearings of various equipment. This is equipped with a tank for storing grease and a discharge pump. When replenishing the tank with grease, connect the supply port of the device (generally a male screw) and a flexible grease container with an adapter, and then use the grease container (hereinafter simply referred to as "container"). I try to squeeze out the grease.

As shown in FIG. 14, a conventional adapter has a tubular nipple 53 that is screwed at its base portion 53 a with a cap male screw 52 of a head portion 51 of a container 50, and a male screw 55 of a supply port 54. It has a female screw 56 to be screwed and a lock nut 58 fitted to the outer side of the thin tube portion 57 of the nipple 53 in a rotatable and slidable manner. The vicinity of the supply port at the tip of the nipple is folded outward by thermoforming to form a stopper 59, which prevents the lock nut 58 from slipping out, and also when the lock nut 58 is tightened. And is strongly contacted with the supply port 54, and a sealing action is obtained.

When supplying grease to the automatic grease supply device, the sealing cap is removed from the container 50 in advance, the nipple 53 of the adapter is subsequently screwed onto the container 50, and then the lock nut 58 is attached to the male port of the supply port. Screw on the screw. Then, the container 50 is communicatively coupled to the automatic grease supply device, and the operator squeezes the container 50 to transfer the grease.

[0005]

[Problems to be solved by the device]

 In the case of the conventional adapter, a plurality of mold facilities are required to form the nipple and the lock nut, respectively, and the stopper portion 59 needs to be thermoformed after the lock nut is passed through the nipple and assembled. Further, since the end surface of the stopper portion 59 has a low molding precision, leakage may occur from the sealing surface between the stopper portion 59 of the nipple 53 and the inner step portion 60 of the lock nut 58 during grease supply.

Further, when using the grease container, it is troublesome to remove the cap, then connect the nipple, and then connect the lock nut.

On the other hand, as shown in FIG. 15, the screw 63 of the grease supply port 62 of the counterpart device 61 is a female screw, and the head 65 of the grease container 64 has a diameter as small as the grease supply port 62 and its outer periphery. It is also conceivable to form a precise male screw 66 on the screw and directly screw the grease container 64 to the screw 63 of the grease supply port of the counterpart device. Moreover, such a male screw molded container has a small diameter mouth, which slows down the grease filling speed and makes it difficult for air to escape.

The present invention aims to provide a practical adapter which has a simple structure, can be easily manufactured, and has a good sealing property and is easy to handle as compared with the conventional grease container adapter. There is.

[0009]

[Means for Solving the Problems]

 The adapter for a grease container of the present invention is an adapter for connecting a grease container and a mating member, and has a cylindrical shape, and is screwed to the male screw of the mating member to which grease is to be supplied on the inner peripheral surface thereof. A female screw is provided, an outer peripheral surface corresponding to the female screw is closely fitted to an inner peripheral surface of the head of the grease container, and a flange-shaped stopper that comes into contact with the end surface of the head is provided. I am trying.

The adapter of the present invention can be integrally molded, and does not require any additional heat molding process or assembly process after being manufactured by molding. In addition, since it is an integrally molded product, there is no risk of leakage unlike the conventional product that can be obtained by assembling two parts.

Further, in the adapter having the seal member, the cap is unnecessary because it also serves as a cap in the state where the seal member is provided. When replenishing grease, the seal member is removed and used, but it is not necessary to close it again because normally all grease in the container is transferred.

The adapter of the present invention rotates the entire container when it is connected to the supply port, but it is easier to handle than the conventional adapter that rotates only the lock nut.

[0013]

[Embodiment of device]

 Next, the adapter for the grease container of the present invention will be described with reference to the drawings.

FIG. 1 is a vertical sectional view showing an example of an adapter, FIG. 2 is a partial sectional view showing a container to which the adapter of FIG. 1 is attached, and FIG. 3 is a state in which the adapter of FIG. 1 is attached to the container of FIG. 4 is a partial cross-sectional view showing another example of the adapter in a state of being attached to a container, FIG. 6 is a perspective view of an essential part showing an embodiment of the adapter of the present invention, and FIG. 6 is a cross-sectional view of a main part of the grease container with an adapter shown in FIG. 6, FIG. 8 is a cross-sectional view showing another embodiment of the adapter of the present invention, FIG. 9 is an explanatory view of the use state of the grease container shown in FIG. 8, and FIG. 8 is a partial sectional front view showing an example of a case where a skirt is provided on the grease container of FIG. 8, FIGS. 11 to 12 are schematic explanatory views showing still other examples of the adapter, and FIG. 13 shows still another example of the adapter. FIG.

The adapter 1 shown in FIG. 1 has a cylindrical shape, and a first female screw 3 that is screwed with a cap screw of a container head is formed on one end 2 side in the axial direction of the inner peripheral surface of the adapter 1 and the other end. On the 4 side, a second female screw 5 that is screwed with the male screw of the supply port is formed. The first and second female screws 3 and 5 are separated by a step 6 having an inner diameter D that is substantially equal to the inner diameter of the supply port or the head of the container.

In order to use the adapter 1, the cap 7 of the container 16 shown in FIG. 2 is removed, and the cap 7 is screwed onto the male screw 9 of the container head 8 and the first female screw 3 Screw in and tighten firmly to fix. Then, as shown in FIG. 3, the second female screw 5 of the adapter 1 is fitted to the male screw 11 of the supply port 10 such as an automatic grease supply device, and the entire container 16 is rotated to be firmly tightened and fixed. After that, the container is squeezed and grease is supplied to an automatic grease supply device.

The adapter 12 shown in FIG. 4 has the same shape as the adapter 1 shown in FIG. 1, and the end face 13 on the side connected to the supply port is sealed with a seal sheet 14 so as to close the communication port 15 by heat sealing. Or it is pasted with an adhesive. The seal sheet 14 may be composed of, for example, a laminate of an aluminum foil and a synthetic resin film. Such an adapter 12 serves as a closing cap prior to use of the container, i.e., during shipping and storage. Therefore, no special cap (7 in FIG. 2) is required. Then, the seal sheet 14 may be peeled off when the container 16 is used. A lower piece 17 may be formed on a part of the circumference of the seal sheet 14 so that the seal sheet 14 can be easily gripped.

FIG. 5 shows an adapter 18 having a different type of sealing member than that shown in FIG. That is, the adapter 18 has the same shape as that shown in FIGS. 1 and 4, and the first female screw 20 side of the adapter 18 is made of rubber or synthetic material so as to be in contact with the step portion 6. A sealing member 22 made of a resin plate or the like is provided. The sealing member 22 is pinched by the end face 23 of the head of the container 19 screwed to the adapter 18 and the stepped portion 6 to produce a sealing effect. The seal member 22 may be adhered to the step portion 6. The adapter in that state has a function as a closing cap similar to that in FIG. When the container 19 is used, the seal member 22 may be preliminarily projected from the connection end side to the supply port by a rod (not shown) or the like so as to be communicated. It should be noted that the first female thread of the adapter shown in FIGS. 1, 4 and 5 is preferably shorter than the length of the container head, so that the adapter is not disturbed by contact with the shoulder of the container. The end surface of the head contacts the step of the adapter, improving the sealing performance.

The adapter 24 of the present invention shown in FIG. 6 is used by being fitted in the head of a container and has a so-called bush shape. The adapter 24 has a cylindrical shape, a flange-shaped stopper 26 is provided on the outer periphery of one end of the adapter 24, and a female screw 27 to be screwed with a male screw of the supply port is formed on the inner peripheral surface. . The outer peripheral surface of the adapter 24 is a fitting surface that closely fits with the inner peripheral surface of the head 31 of the container 28 as shown in FIG. 7, and an annular projection 30 is formed on a part thereof. The annular projection 30 is interrupted at 2 to 4 points, for example, as shown by A in FIG.

An annular projection 31a having a substantially corresponding shape is also formed on the head 31 side of the container 28, and the inner surface of the annular projection 31a has an annular projection 30 of the adapter 24 as shown in FIG. Is a discontinuous annular groove 32 that tightly engages with. A male screw 31b for screwing the cap 33 is provided on the outer periphery of the head 31.

This product is assembled by firmly fitting the adapter 24 into the inner surface of the head portion 31 and fitting the annular projection 30 into the annular groove 32. In this case, a container (not shown) is applied to the lower side of the annular projection 31a of the head 31 to hold the container 28, and the adapter 24 can be pushed in for easy insertion. Further, once the discontinuous annular projection 30 and the annular groove 32 are fitted together, there is an advantage that the adapter 24 cannot be pulled out, and moreover, it does not rotate with respect to the container 28. The annular protrusion 31a and the annular groove 32 of the head portion 31 of the container can be simultaneously formed in the case of blow molding. It should be noted that the adapter 24 may be fixed to the head of the container by bonding with or without the annular projections 30 and 31a.

The adapter 24 configured as described above is fitted into the head of the container 28 as shown in FIG. 7 and used as a container with an adapter. This head is closed by the cap 33 except when it is used.

The adapter 24 of the present invention shown in FIG. 8 is fixed in the head of a container 36 by being sealed with an adhesive, and a seal sheet 35 is attached to the end face of a flange-shaped stopper 34. The container 36 does not require a closing cap because the sealing sheet 35 exerts a close-closing function before use. At the time of use, the seal sheet 35 may be broken or peeled off with a stick (not shown) or the like and screwed and connected to the supply port.

Further, in the container 36 shown in FIG. 8, the body portion 37 is formed into a bellows shape, and the bottom portion 38 thereof is formed into a thin film shape. Therefore, there is an advantage that the grease inside the container can be easily pushed out simply by folding the bellows as shown in FIG. Also, since this material deforms only in the axial direction, there is an advantage that the injection amount can be easily determined from the shrinkage ratio of the entire length by the division amount.

In the container 36 of FIG. 8, if the bottom portion 38 is formed in a thin film shape, there is an advantage that it can be extruded without leaving any grease as shown in FIG.

Further, since it is difficult to grasp and twist the bellows-shaped container 36 firmly, it is preferable to provide the skirt 39 on the head side or the bottom side (shown by the chain double-dashed line) as shown in FIG. preferable. This allows the user to rotate the body 37 while holding the skirt 39 by hand and screw the adapter 24 into the mating member.

As a material used for the adapter of the present invention, a thermoplastic resin such as polyethylene, polypropylene, polyvinyl chloride, polyester, polystyrene, or polycarbonate is generally used. Further, as a manufacturing method, there is injection molding or the like. Further, the container body can be formed by blow molding or the like from polyethylene, polypropylene, polyvinyl chloride, polyethylene terephthalate (PET), polyacrylonitrile, etc., as in the conventional case.

Next, another example of the adapter will be described with reference to FIG.

The adapter 40 shown in FIG. 11 is for an automatic grease supply port 41 of a truck or a small machine. The first screw 42 of this one is a female screw that is screwed with the male screw 44 of the head of the container 43, as in FIG. 1, but the second screw 45 is a male screw. Generally, since the male screw is formed in the supply port 46, the second screw is also a female screw. However, the design of the screw 47 of the supply port is changed to a female screw, and the second screw 45 is changed. It is adapted to the adapter 40 using a male screw.

The adapter 40 shown in FIG. 11 is further provided with a plug 48 that is screwed with the first screw 42 as an accessory so as to be detachable.

To use the adapter 40 of FIG. 11, first, the plug 49 of the supply port 46 is removed (a), and then the second screw 45 of the adapter 40 is firmly screwed (b).

After attaching the adapter 40, the cap 43a of the container 43 is removed (c), and the male screw 44 of the head of the container 43 is screwed into the first screw 42 of the adapter 40 (d). Then, the container 43 is crushed to transfer the grease in the container to the counterpart device (e). When the transfer is complete, remove the adapter 40 and attach the original plug 49, or leave the adapter 40 attached and screw the attached plug 48 to the first screw 42 to connect the other device. Prevent the grease from leaking out and prevent the rubber from mixing in to prepare for the next grease replenishment. In the latter case, the container 43, the cap 43a, and the original plug 49 of the supply port are usually discarded. If grease still remains in the grease container, the cap 43a is screwed on and stored for the next use.

It is preferable that the attached plug 48 for the adapter is formed with knurled stitches on the outer periphery so that it can be firmly screwed.

Further, as shown in FIG. 12, a plug 48a to be screwed with the first screw 42 is integrally formed at the tip of the cap 43a of the container so that the cap and the plug can be combined into one component. Since the number of parts is reduced, the cost is reduced.

As shown in FIG. 13, the adapter 72 may be previously screwed to the head 71 of the grease container 70, and a small cap 74 that can be screwed into the second screw 73 of the adapter may be attached. . Similar to the grease container with an adapter shown in FIG. 6, this one does not require the trouble of attaching the adapter 72 before the grease filling work, and has the advantage that it does not need to be attached each time it is used repeatedly.

Further, instead of the small cap 74, a seal sheet 75 similar to the case of FIG. 4 is attached to the tip end side of the adapter 72, or the same seal member 76 as in the case of FIG. 5 is used. The same effect can be obtained even if it is interposed between 72 and the head 71 of the grease container 70.

[0037]

[Effect of device]

 Since the adapter of the present invention is integrally molded, the manufacturing process is simple, and since there are no divided parts, it has a good sealing property and the screwing operation to the supply port is easy. In addition, it is not necessary to equip a cap with a seal member.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view showing an example of an adapter.

FIG. 2 is a partial sectional view showing a container to which the adapter of FIG. 1 is attached.

FIG. 3 is a partial sectional view showing a state where the adapter of FIG. 1 is attached to the container of FIG. 2;

FIG. 4 is a cross-sectional view showing another example of the adapter attached to a container.

FIG. 5 is a cross-sectional view showing another example of the adapter attached to a container.

FIG. 6 is a perspective view of a main part showing an embodiment of the adapter of the present invention.

FIG. 7 is a sectional view of a main part of the grease container with an adapter of FIG. 6;

FIG. 8 is a sectional view showing another embodiment of the grease container with an adapter of the present invention.

FIG. 9 is an explanatory view of a use state of the grease container of FIG.

10 is a front view, partly in section, showing an example of the grease container of FIG. 8 provided with a skirt.

FIG. 11 is a schematic explanatory view showing still another example of the adapter.

FIG. 12 is a schematic explanatory view showing still another example of the adapter.

FIG. 13 is a sectional view showing still another example of the adapter.

FIG. 14 is a sectional view showing an example of a conventional adapter.

FIG. 15 is a cross-sectional view showing a case where a container head is directly attached to a partner device as a comparative example.

[Explanation of symbols]

 1, 12, 18, 24, 40, 72 Adapter 3 First female screw 5 Second female screw 6 Step portion 14, 35 Seal sheet 16, 28, 36, 43, 70 Container 22 Seal member 26 Stopper 27 Female screw 31 head Part 42 First screw 45, 73 Second screw

Claims (1)

[Scope of utility model registration request] 1. A grease container having a cylindrical shape, having an inner peripheral surface having an internal thread screwed into a male thread of a mating member to which grease is to be supplied, and an outer peripheral surface corresponding to the internal thread being a head of the grease container. An adapter for tightly fitting an inner peripheral surface and having a flange-shaped stopper abutting on the end face of the head, for connecting a grease container and a mating member.