JP4908135B2 - container - Google Patents

Description

  The present invention relates to, for example, a machine tool, a molding machine, a sliding member that requires characteristics such as low sound, heat resistance, rust prevention, and load resistance, and grease for supplying grease and oil to the sliding part. The present invention relates to a container mounted on an industrial machine such as a supply device.

  As shown in FIGS. 4 and 5, for example, a grease filling container 100 attached to a grease supply device (not shown) includes a screw portion 104 inserted into a connection port 102 (see FIG. 5) of the grease supply device. A connecting portion 106 connected to the screw portion 104; and a bellows portion 108 that is connected to the connecting portion 106 and has crest portions 108A and trough portions 108B alternately formed in the axial direction and expandable and contractable in the axial direction. ing.

As shown in the diagram on the left side of FIG. 5, the thread filling portion 100 of the grease filling container 100 is attached to the connection port 102 of the grease supply device, whereby the grease filling container 100 is connected to the grease supply device. Then, the grease filled in the grease filling container 100 is injected into the grease supply device through the screw portion 104. 5, when the grease inside the grease filling container 100 is poured into the grease supply device, the bellows portion 108 of the grease filling container 100 is placed on the opposite side to the screw portion 104. It shrinks sequentially from the bottom 108C side.
JP 2003-95355 A

  By the way, in the grease filling container 100, when grease is poured into the grease supply device, the grease is viscous, and therefore, the grease may remain attached inside the connecting portion 106 and the screw portion 104. is there.

  In particular, in the conventional grease filling container 100, since the bottom portion 108C of the bellows portion 108 is constituted by the valley portion 108B, the radial length of the bottom portion 108C is shortened, and the strength is lowered accordingly. Therefore, when the grease in the grease filling container 100 is poured into the grease supply device, the bellows portion 108 is contracted. However, when the bellows portion 108 is contracted, the bottom portion 108C of the bellows portion 108 is attracted by a suction force. The bottom 108C does not come into contact with the shoulder 110, and a large gap is formed between the bottom 108C and the shoulder 110. When a large gap is formed between the bottom portion 108C and the shoulder portion 110, there is a problem that the grease located in the gap is not injected into the grease supply device and remains in the grease filling container 100.

  Further, when the bottom portion 108C of the bellows portion 108 is constituted by the valley portion 108B, the bottom portion 108C of the bellows portion 108 is recessed by a suction force, and the radially outer end portion of the bottom portion 108C protrudes greatly upward. For this reason, there is a problem that the grease located at the protruding portion is not injected into the grease supply device and remains inside the grease filling container 100.

  Thus, when the remaining amount of grease increases, not only is it uneconomical, but also it becomes difficult to clean the grease filling container 100 and the grease filling container 100 cannot be reused, and thus there is a problem as industrial waste. Come.

  In view of the above circumstances, an object of the present invention is to provide a container that can reduce the remaining amount of fillers such as grease and oil remaining inside after use.

The invention according to claim 1 is a bellows portion in which peaks and valleys are alternately formed in the axial direction and expandable and contractable in the axial direction, a screw portion connected to a connection port in which an opening is formed, A connecting portion that connects the bellows portion and the screw portion, and the filler filled in the bellows portion is discharged from the inside of the connecting portion and the screw portion to the outside through the opening. A bottom portion of the bellows portion is formed by the mountain portion, and a shoulder portion is formed on the opposite side of the bellows portion in the axial direction from the bottom portion, the shoulder portion being formed on the bottom portion. A protruding portion that protrudes toward the shoulder side is formed, and the protruding portion is radially outward of the shoulder portion that is bent and deformed when the bellows portion is contracted and the bottom portion closes the opening. It is formed in the position which opposes a site | part .

According to a second aspect of the present invention, in the container according to the first aspect , a length dimension from the center of the bottom portion of the bellows portion to a radially outer end portion is M (mm), and the bottom portion of the bellows portion is When the length from the center to the position where the protrusion is formed is N (mm), (N / M) × 100 = 60 (%) or more.

A third aspect of the present invention is the container according to the first or second aspect, wherein the height of the projecting portion is equal to or less than a deflection amount of the radially outer portion of the shoulder portion.

According to a fourth aspect of the invention, in the container of any one of claims 1 to 3, the height of the protruding portion may be 2mm or less.

The invention according to claim 5 is the container according to any one of claims 1 to 4 , characterized in that a thickness dimension of the bottom portion of the bellows portion is 1.5 mm or more and 3 mm or less.

  According to the first aspect of the present invention, the crest portions and the trough portions are alternately overlapped, and the bellows portion is contracted in the axial direction, whereby the filling material filled in the bellows portion is connected to the connection portion and the screw portion. It discharges to the outside from the opening of the connection port through the inside.

  Here, since the bottom part of the bellows part is comprised by the peak part, compared with the case where it is comprised by the trough part, radial direction length becomes long. For this reason, the mass of a bottom part increases and it can give intensity | strength to a bottom part by that much. Specifically, a predetermined suction force acts on the bottom portion of the bellows portion, and the bellows portion contracts in the axial direction. However, since the strength of the bottom portion increases, the bottom portion receiving the suction force is recessed. Can be prevented. Thereby, when the bellows part contracts, the bottom part moves in the axial direction downward while maintaining a substantially parallel state. In a state where the bellows portion is fully contracted, the bottom portion maintains the parallel state as it is and closes the opening of the connection port. In addition, the amount of protrusion protruding above the radially outer end of the bottom can be reduced as compared to the case where the bottom is configured by a trough. As a result, the remaining amount of the filler remaining inside the bellows portion can be reduced.

According to the present invention, the bottom is formed with a protrusion that protrudes toward the shoulder, and the protrusion is bent and deformed and inclined when the bellows is contracted and the bottom closes the opening. It is formed at a position facing the radially outer portion of the part.

  Here, when the container is molded by a blow molding technique, a protruding portion that protrudes toward the shoulder portion is necessarily formed at the bottom of the bellows portion. Therefore, the bellows portion is contracted by forming the protruding portion at a position opposite to the radially outer portion of the shoulder portion which is bent and deformed when the bellows portion is contracted and the bottom portion closes the opening. At this time, the height of the protrusion can be absorbed by the amount of deflection of the radially outer portion of the shoulder. Thereby, a gap is not formed between the bottom and the shoulder due to the protrusion.

According to the second aspect of the present invention, the length dimension from the center of the bellows part to the radially outer end is M (mm), and the length from the center of the bellows part to the position where the protrusion is formed. When the dimension is N (mm), it is set to be (N / M) × 100 = 60 (%) or more. The size can be lowered. Thereby, the height dimension of a protrusion part can be absorbed with the deflection amount of the radial direction outer side part of a shoulder part.

According to the third aspect of the present invention, since the height dimension of the protruding portion is equal to or less than the bending amount of the radially outer portion of the shoulder portion, the height dimension of the protruding portion is set to the bending amount of the radially outer portion of the shoulder portion. Can be absorbed reliably.

According to invention of Claim 4 , it is preferable that the height dimension of a protrusion part is 2 mm or less. If the height dimension of the protruding portion is 2 mm or less, the height dimension of the protruding portion is determined by the amount of bending of the radially outer portion of the shoulder without being affected by the amount of bending of the radially outer portion of the shoulder. Can be absorbed reliably.

According to invention of Claim 5 , since the thickness dimension of the bottom part of a bellows part is 1.5 mm or more and 3 mm or less, after suppressing that the manufacturing cost of a container increases by the increase in mass, a bellows part The strength of the bottom of the can be improved.

Next, the container which concerns on 1st Embodiment of this invention is demonstrated with reference to drawings.
In the present embodiment, a grease filling container filled with grease (or oil) is taken as an example and described below.

  As shown in FIGS. 1 to 3, the grease filling container 10 includes a cylindrical screw portion 12. A screwing portion 13 is formed on the outer periphery of the screw portion 12. The threaded portion 13 is screwed into a connection port 14 (see FIG. 3) formed in a grease supply device (not shown), whereby the threaded portion 12 is attached to the grease supply device (not shown).

  Further, the threaded portion 12 is integrally formed with a connecting portion 15 that is cylindrical and has a diameter larger than the diameter of the threaded portion 12.

  Further, a bellows portion 16 is integrally formed with the connection portion 15. Further, the bellows portion 16 is formed so that the crest portions 16A having a long radial length and the trough portions 16B having a short radial length are alternately and continuously in the axial direction (the arrow Z direction in FIG. 1). Has been.

  A bottom portion 16 </ b> C is formed at the other end portion in the axial direction of the bellows portion 16 (the end portion located on the opposite side of the screw portion 12). The bottom portion 16C is constituted by a peak portion 16A having a long radial length. That is, the bottom portion 16C is not composed of a crest portion 108B having a short radial length like the conventional container 100 (see FIG. 4), but is composed of a crest portion 16A having a long radial direction length. Therefore, the radial length of the bottom portion 16C is longer than that of the conventional container 100 (see FIG. 4). For this reason, the mass of the bottom portion 16C is increased, and the strength (rigidity) is increased accordingly.

  Here, the thickness dimension B of the bottom portion 16C of the bellows portion 16 is set to be 1.5 (mm) or more and 3 (mm) or less. Furthermore, the thickness dimension B of the bottom portion 16C of the bellows portion 16 is preferably 2 (mm) or more and 3 (mm) or less.

  Further, a protruding portion 17 that protrudes toward the shoulder portion 16D is formed on the inner side (back side) of the bottom portion 16. Specifically, the protruding portion 17 is opposed to a radially outer portion 16E (described later) of the shoulder portion 16D that bends and deforms when the bellows portion 16 contracts and the bottom portion 16C closes the opening portion 19 of the connection port 14. Is formed.

  Specifically, the length from the center O of the bottom portion 16C of the bellows portion 16 to the radially outer end is M (mm), and the length from the center of the bottom portion 16C of the bellows portion 16 to the position where the protrusion 17 is formed. When the dimension is N (mm), (N / M) × 100 = 60 (%) or more is set. Thus, the protrusion 17 is formed on the radially outer end side of the bottom 16C.

  In the present embodiment, the length M from the center O of the bottom portion 16C of the bellows portion 16 to the radially outer end is set to 48.5 (mm). Further, the length dimension N from the center of the bottom portion 16C of the bellows portion 16 to the formation position of the protruding portion 17 is set to 31 (mm). Moreover, in this embodiment, it is preferable that the protrusion part 17 is formed in the position where the length dimension N from the center to the formation position of the protrusion part 17 is 31 (mm) or more and 43 (mm) or less.

  Moreover, the height dimension of the protrusion part 17 is set so that it may become below the deflection amount of the radial direction outer side part 16E of shoulder part 16D, and especially the height dimension of the protrusion part 17 in this embodiment is 2 ( mm).

  Further, the thickness B of the bottom portion 16C located at the other end portion in the axial direction of the bellows portion 16 (the end portion located on the opposite side of the connection portion 15) is 1.5 (mm) or more and 3 (mm) or less. Is set to In particular, the thickness B of the bottom portion 16C is preferably 2 (mm).

  The bellows portion 16 is located closest to the connecting portion 15 and has a shoulder portion 16D that is contacted and pressed by the bottom portion 16C when the bellows portion 16 is contracted. The shoulder portion 16D includes a radially outer portion 16E that is pressed by the bottom portion 16C when the bellows portion 16 is contracted to bend and deform downward and incline downward at an arbitrary angle.

  Next, the operation of the grease filling container 10 of the present embodiment will be described.

  As shown in FIGS. 1 to 3, for example, when the thread portion 12 of the grease filling container 10 filled with grease or oil is attached to the connection port 14 of the grease supply device, the opening portion of the connection port 14 is provided. A predetermined suction force acts on the grease from the 19 side, and the grease is injected into the inside of the grease supply device from the screw portion 12 of the grease filling container 10 through the opening portion 19 of the connection port 14. As the grease inside the grease filling container 10 is poured into the grease supply device, the grease inside the grease filling container 10 disappears, and the bellows portion 16 is caused by the bottom portion 16C receiving suction force. The crests 16A overlap with each other from the lost part and gradually shrink in the axial direction.

  Here, since the bottom portion 16C of the bellows portion 16 is configured by the peak portion 16A, the radial length is longer than that in the case where the bottom portion 16C is configured by the valley portion 16B. For this reason, the mass of the bottom portion 16B is increased, and the bottom portion 16C can be given strength (rigidity) accordingly. Specifically, a predetermined suction force acts on the bottom portion 16C of the bellows portion 16 and the bellows portion 16 contracts in the axial direction. However, since the strength (rigidity) of the bottom portion 16C increases, the suction force is reduced. It is possible to prevent the received bottom portion 16C from being recessed. As a result, when the bellows portion 16 contracts, the bottom portion 16C moves in the axial direction while maintaining a substantially parallel state. When the bellows portion 16 is fully contracted, the bottom portion 16C maintains the parallel state as it is and closes the opening portion 19 of the connection port 14. In addition, the amount of protrusion protruding above the radially outer end of the bottom portion 16C can be reduced as compared with the case where the bottom portion 16C is configured by the valley 16B. As a result, the remaining amount of grease remaining inside the bellows portion 16 can be reduced.

  Further, in the container 10 of the present embodiment, a protruding portion 17 that protrudes toward the shoulder portion 16D is formed on the inner side (back side) of the bottom portion 16C. It is formed at a position facing the radially outer portion 16E of the shoulder portion 16D that bends and deforms when the 14 opening portions 19 are closed. By the way, when the container 10 is formed by the blow molding technique, a protrusion 17 that protrudes toward the shoulder 16D is necessarily formed on the inner side (back side) of the bottom portion 16C of the bellows portion 16. Is formed at a position opposite to the radially outer portion 16E of the shoulder portion 16D that bends and deforms when the bellows portion 16 is contracted and the bottom portion 16C closes the opening 19 of the connection port 14. Sometimes the height of the protrusion 17 can be absorbed by the amount of deflection of the shoulder 16D. Thereby, a gap is not formed between the bottom portion 16C and the shoulder portion 16D due to the protruding portion 17. As a result, the remaining amount of grease remaining inside the bellows portion 16 can be reduced.

  In particular, the length dimension from the center of the bottom part 16C of the bellows part 16 to the radially outer end is M (mm), and the length dimension from the center of the bottom part 16C of the bellows part 16 to the position where the protrusion 17 is formed is N ( mm), it is set so that (N / M) × 100 = 60 (%) or more. Therefore, when the container 10 is molded by the blow molding technique, the height of the protrusion 17 is set. Can be lowered.

  Further, by setting the height dimension of the protruding portion 17 to be equal to or less than the deflection amount of the radially outer portion 16E of the shoulder portion 16D, specifically, 2 (mm) or less, the deflection of the radially outer portion 16E of the shoulder portion 16D. The height dimension of the projecting portion 17 can be reliably absorbed by the amount of deflection of the radially outer portion 16E of the shoulder portion 16D without being substantially affected by the magnitude of the amount.

  Furthermore, since the thickness dimension B of the bottom portion 16C of the bellows portion 16 is 1.5 (mm) or more and 3 (mm) or less, an increase in the manufacturing cost of the container 10 due to an increase in mass is suppressed, and the bellows The strength of the bottom portion 16C of the portion 16 can be improved.

It is an external view of the container which concerns on 1st Embodiment of this invention. It is a fragmentary sectional view of the right half of the container which concerns on 1st Embodiment of this invention. The left side is a diagram of a state where the container according to the first embodiment of the present invention is attached to the connection port of the grease supply device and the bellows portion is extended, and the right side is a diagram where the bellows portion is contracted. It is an external view of the conventional container. The left side is a view of a state where a conventional container is mounted on the connection port of the grease supply device and the bellows portion is extended, and the right side is a view of the bellows portion being contracted.

Explanation of symbols

10 Grease filling container (container, viscous fluid filling container)
12 thread part 14 connection port 15 connection part 16 bellows part 16A mountain part 16B valley part 16C bottom part 16D shoulder part 16E radial direction outside part 17 projection part 19 opening part

Claims (5)

Connecting the bellows portion and the screw portion, the bellows portion that is alternately formed in the axial direction and the bellows portion that can be expanded and contracted in the axial direction, the screw portion connected to the connection port in which the opening portion is formed, and the bellows portion A container having a filling portion filled in the bellows portion and discharged from the inside of the connection portion and the screw portion to the outside through the opening,
The bottom part of the bellows part is composed of the peak part ,
On the side opposite to the bottom of the bellows portion in the axial direction, a shoulder portion is formed following the connection portion,
The bottom is formed with a protruding portion that protrudes toward the shoulder,
The projecting portion is formed at a position facing a radially outer portion of the shoulder portion that bends and deforms when the bellows portion contracts and the bottom portion closes the opening. Container to be used. The length dimension from the center of the bottom of the bellows part to the radially outer end is M (mm), and the length dimension from the center of the bottom of the bellows part to the formation position of the protrusion is N (mm). If
(N / M) × 100 = 60 (%) or more,
A container according to claim 1, characterized in that a. The container according to claim 1 or 2 , wherein a height dimension of the protruding portion is equal to or less than a bending amount of the radially outer portion of the shoulder portion . The container according to any one of claims 1 to 3, wherein a height dimension of the protruding portion is 2 mm or less . The container according to any one of claims 1 to 4 , wherein a thickness dimension of the bottom portion of the bellows portion is 1.5 mm or more and 3 mm or less .

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