Multi-joint nut

Abstract

The present invention relates to a multi-joint nut, and more specifically, to a multi-joint nut, that is, a first nut portion having a first fastening portion formed in a central portion is combined with a second nut portion having a second fastening portion formed therein, so that the nut is easy to manufacture and can be selectively combined with a first nut portion or a second nut portion that matches the diameter of the coupling portion of the fastened object. The present invention is a multi-joint nut that can select the first fastening portion or the second fastening portion corresponding thereto for fastening according to the coupling portion of the fastened object with different diameters. The present invention may include: a first nut portion having a first fastening portion and a setting portion, wherein the first fastening portion has a thread formed on the through inner circumferential surface of the central portion, and the setting portion is spaced a specified distance from the outside of the first fastening portion to form a space portion; and a second nut portion, which is annular and has a second fastening portion having a thread formed on the inner circumferential surface, and the second nut portion is inserted into and combined with the space portion of the first nut portion.

Description

Technical Field

[0001] The present invention relates to a multi-joint nut, and more particularly, to a multi-joint nut, wherein a first nut portion having a first fastening portion formed at a center portion is combined with a second nut portion having a second fastening portion, thereby facilitating manufacturing and being able to selectively combine with the first nut portion or the second nut portion having a diameter of a coupling portion that conforms to a fastening object. Background Art

[0002] Portable oil drums, also known as oil drums or petroleum drums, are barrel structures made of plastic, and the standard specifications are 10 liters or 20 liters, etc.

[0003] Portable oil drums are used to manually add oil to various small equipment or small devices such as generators and furnaces or boilers at civil engineering sites.

[0004] This portable oil drum is very useful when there is no gas station nearby or it is difficult to travel to a gas station frequently.

[0005] However, when various small devices such as generators and furnaces or boilers at civil engineering sites are refueled using existing portable oil barrels that are widely used, the refueling operation is difficult and inconvenient because the portable oil barrel must be held for refueling.

[0006] In particular, when using existing portable oil barrels to refuel a small refueling port such as a stove, it is inconvenient to refuel by yourself. In addition, fuel may be spilled during refueling, resulting in fuel loss and surrounding pollution.

[0007] A multi-joint nut is required to connect a pump or a nozzle to the filling port of such a portable oil drum.

[0008] However, since the size of the injection port of each portable oil barrel is different, there is a problem of having to have a plurality of multi-joint nuts that conform to the sizes of the various injection ports.

[0009] Therefore, although the prior art is disclosed in Korean Utility Model No. 20-0396594 and Korean Patent No. 10-0605634, it is difficult to form a threaded portion due to the narrow gap between the injection port and the threaded portion, resulting in problems such as increased manufacturing difficulty and increased manufacturing cost.

[0010] Prior art literature

[0011] Patent Literature

[0012] Patent Document 1: 1. Korean Utility Model No. 20-0396594

[0013] Patent Document 2: 2. Korean Patent No. 10-0605634 Summary of the invention

[0014] The present invention is proposed to solve the problems of the above-mentioned prior art. The purpose of the present invention is to provide a multi-joint nut, that is, a first nut portion having a first fastening portion formed at the center portion is combined with a second nut portion having a second fastening portion, so that it is easy to manufacture and can be selectively combined with the first nut portion or the second nut portion that matches the diameter of the coupling portion of the fastened object.

[0015] Furthermore, another object of the present invention is to provide a multi-joint nut in which a first nut portion having a first fastening portion and a second nut portion having a second fastening portion are manufactured separately and then combined, thereby making it easy to form threads of each threaded portion.

[0016] Furthermore, another object of the present invention is to provide a multi-joint nut, namely, a first nut portion is formed with a longitudinal groove portion, and a second nut portion is formed with a longitudinal protrusion portion, so that when the first nut portion is combined with the second nut portion, the longitudinal protrusion portion is inserted and combined with the longitudinal groove portion, thereby allowing the rotational force applied to the first nut portion to be transmitted to the second nut portion.

[0017] Furthermore, another object of the present invention is to provide a multi-joint nut, namely, a first nut portion is formed with a transverse groove portion, and a second nut portion is formed with a transverse protrusion portion, so that when the first nut portion and the second nut portion are combined, the transverse protrusion portion is inserted and combined in the transverse groove portion, thereby allowing the first nut portion and the second nut portion to be firmly combined.

[0018] The present invention for achieving the above-mentioned purpose is a multi-joint nut that can select the first fastening part or the second fastening part corresponding to the connecting part with different diameters of the fastening object for fastening. The multi-joint nut may include: a first nut part, having a first fastening part and a setting part, the first fastening part having a thread formed on the through inner circumferential surface of the center part, the setting part being spaced a specified distance to the outside of the first fastening part to form a space part; and a second nut part, which is annular and has a second fastening part having a thread formed on the inner circumferential surface, the second nut part being inserted into and connected to the space part of the first nut part.

[0019] Furthermore, a flange may be formed at an upper end portion of the second nut portion so as to protrude along the central axis direction.

[0020] Furthermore, the first nut portion may have a plurality of longitudinal grooves formed at predetermined intervals on an outer peripheral surface of the space portion, and the second nut portion may have longitudinal protrusions protrudingly formed on an outer peripheral surface thereof corresponding to the longitudinal grooves.

[0021] Furthermore, the first nut portion may have a plurality of transverse grooves formed at predetermined intervals on an outer peripheral surface of the space portion, and the second nut portion may have transverse protrusions formed on an outer peripheral surface thereof corresponding to the transverse grooves.

[0022] Furthermore, the lateral protrusion may include an inclined surface inclined downward from an upper end toward a lower end.

[0023] Furthermore, a supporting protrusion may be protrudingly formed on an outer peripheral surface of the setting portion.

[0024] Furthermore, the first fastening portion may form a packaging groove on the inner side of the upper end.

[0025] Furthermore, the first fastening portion may form a packaging groove on the outer side of the upper end.

[0026] According to the present invention, the present invention has the following effect: in a multi-joint nut that can be fastened by selecting a first fastening part or a second fastening part corresponding to a coupling part with different diameters of a fastened object, a first nut part having a first fastening part formed at a center part is combined with a second nut part having a second fastening part formed thereon, thereby facilitating manufacturing and being able to selectively combine with the first nut part or the second nut part having a diameter that matches the coupling part of the fastened object.

[0027] Furthermore, the present invention has the following effect: the first nut part having the first fastening part formed therein and the second nut part having the second fastening part formed therein are manufactured separately and then coupled together, thereby making it easy to form the threads of each threaded part.

[0028] Furthermore, the present invention also has the following effect: the first nut part is formed with a longitudinal groove part, and the second nut part is formed with a longitudinal protrusion part, so that when the first nut part is combined with the second nut part, the longitudinal protrusion part is inserted and combined with the longitudinal groove part, thereby allowing the rotational force applied to the first nut part to be transmitted to the second nut part.

[0029] Furthermore, the present invention also has the following effect: the first nut part is formed with a transverse groove part, and the second nut part is formed with a transverse protrusion part, so that when the first nut part is combined with the second nut part, the transverse protrusion part is inserted and combined with the transverse groove part, thereby allowing the first nut part and the second nut part to be firmly combined. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a perspective view showing the multi-joint nut of the present invention.

[0031] Figure 2 It is a bottom stereoscopic view of the multi-joint nut of the present invention.

[0032] Figure 3 It is a separated bottom stereoscopic view of the multi-joint nut of the present invention.

[0033] Figure 4 It is a cross-sectional view of the multi-joint nut of the present invention.

[0034] Figure 5 It is a cross-sectional view of another embodiment of the multi-joint nut of the present invention.

[0035] Figure 6 and Figure 7 It is a figure which shows the usage state of the first nut part of the multiple joint nut of this invention.

[0036] Figure 8 and Fig. 9 It is a figure which shows the usage state of the second nut part of the multiple joint nut of this invention.

[0037] Description of Reference Numerals

[0038] 50: Multi-joint nut

[0039] 100: First nut part

[0040] 110: First fastening portion

[0041] 112: First packaging slot

[0042] 114: Second packaging slot

[0043] 120: Space Department

[0044] 122: Longitudinal groove

[0045] 124: Transverse groove

[0046] 130: Setting Department

[0047] 132: Support protrusion

[0048] 200: Second nut part

[0049] 210: Second fastening portion

[0050] 220: Flange

[0051] 230: longitudinal protrusion

[0052] 240: Lateral protrusion

[0053] 242: Incline

[0054] 244: Stairs DETAILED DESCRIPTION

[0055] The embodiments of the present disclosure are provided for the purpose of explaining the technical concept of the present disclosure. The scope of the invention claimed in the present disclosure is not limited to the embodiments presented below or the specific description of these embodiments.

[0056] Unless otherwise defined, all technical and scientific terms used in this disclosure have the same meaning as those commonly understood by those skilled in the art in the technical field of this disclosure. All terms used in this disclosure are only used to more clearly illustrate this disclosure, and are not used to limit the scope of protection of the invention claimed in this disclosure.

[0057] Unless otherwise mentioned in a sentence or article containing the corresponding expression, the expressions “including”, “having”, “having”, etc. used in the present disclosure should be understood as open-ended terms including the possibility of other embodiments.

[0058] Unless otherwise specified, singular expressions described in the present disclosure may include plural meanings, and the same applies to singular expressions recorded in the scope of protection claims of the invention.

[0059] Hereinafter, preferred embodiments of the multi-joint nut of the present invention will be described in detail with reference to the accompanying drawings.

[0060] Figure 1 It is a perspective view showing the multi-joint nut of the present invention. Figure 2 It is a bottom stereoscopic view of the multi-joint nut of the present invention. Figure 3 It is a separated bottom stereoscopic view of the multi-joint nut of the present invention. Figure 4 It is a cross-sectional view of the multi-joint nut of the present invention. Figure 5 It is a cross-sectional view of another embodiment of the multi-joint nut of the present invention. Figure 6 and Figure 7 It is a figure which shows the usage state of the first nut part of the multiple joint nut of this invention. Figure 8 and Fig. 9 It is a figure which shows the usage state of the second nut part of the multiple joint nut of this invention.

[0061] The present invention relates to a multi-joint nut 50, that is, a first nut portion having a first fastening portion formed at a center portion is combined with a second nut portion having a second fastening portion formed thereon, thereby facilitating manufacturing and being able to selectively combine with the first nut portion or the second nut portion that matches the diameter of the combined portion of the fastening object, such as Figures 1 to 4 As shown, it may include: a first nut portion 100, having a first fastening portion 110 and a setting portion 130, wherein the first fastening portion 110 is formed with a thread on the through inner circumferential surface of the center portion, and the setting portion 130 is spaced a specified distance to the outside of the first fastening portion 110 to form a space portion 120; and a second nut portion 200, which is annular and has a second fastening portion 210 with a thread formed on the inner circumferential surface, and the second nut portion 200 is inserted into and combined with the space portion 120 of the first nut portion 100.

[0062] The fastening object may be a container containing a fluid therein, and preferably, may be a portable oil barrel.

[0063] In more detail, the first nut portion 100 may include the first fastening portion 110 , the center portion of which is formed through, and a thread may be formed on the inner circumferential surface of the through portion.

[0064] In addition, the present invention includes a setting portion 130 spaced apart from the first fastening portion 110 by a predetermined distance, and a space portion 120 may be formed between the first fastening portion 110 and the setting portion 130 .

[0065] The lower part of the space portion 120 is in an open state.

[0066] On the other hand, the second nut portion 200 is inserted into and coupled to the space portion 120 and may include a second fastening portion 210 having a thread formed on an inner circumferential surface thereof.

[0067] In this case, the inner diameter of the second fastening portion 210 is greater than the inner diameter of the first fastening portion 110 , and the outer circumference of the second fastening portion 210 can be tightly coupled to the outer circumference of the space portion 120 .

[0068] Furthermore, the first nut portion 100 may have a plurality of longitudinal grooves 122 formed at predetermined intervals on the outer circumferential surface of the space portion 120 , and the second nut portion 200 may have longitudinal protrusions 230 protrudingly formed on the outer circumferential surface thereof corresponding to the longitudinal grooves 122 .

[0069] Therefore, when the first nut part 100 and the second nut part 200 are combined, the longitudinal protrusion 230 is combined with the longitudinal groove part 122, so that the rotation force applied to the first nut 100 is transmitted to the second nut part 200, so that they can rotate simultaneously.

[0070] Furthermore, the first nut portion 100 may have a plurality of transverse grooves 124 formed at predetermined intervals on the outer circumferential surface of the space portion 120 , and the second nut portion 200 may have transverse protrusions 240 protrudingly formed on the outer circumferential surface thereof corresponding to the transverse grooves 124 .

[0071] Therefore, when the first nut portion 100 is combined with the second nut portion 200 , the transverse protrusion 240 is combined with the transverse groove portion 124 , thereby preventing the second nut portion 200 from being separated from the space portion 120 and firmly maintaining the combined state.

[0072] In this case, if Figure 5 As shown, the transverse protrusion 240 may include an inclined surface 242 inclined downward from the upper end toward the lower end.

[0073] Therefore, when the above-mentioned lateral protrusion 240 is combined with the lateral groove portion 124, it is guided toward the lateral groove portion 124 through the above-mentioned inclined surface 242 to facilitate the combination. When the above-mentioned lateral protrusion 240 is combined with the lateral groove portion 124, the protruding lower end step 244 of the above-mentioned lateral protrusion 240 is prevented from being separated from the lateral groove portion 124 at will, thereby the combined state can be firmly maintained.

[0074] On the other hand, the second nut portion 200 may have a flange 220 formed at an upper end portion thereof protruding in the direction of the central axis. The formation of the flange 220 may make the second nut portion 200 more rigid than if the second nut portion 200 is formed in a simple ring shape.

[0075] In this case, when the second nut part 200 is coupled to the coupling part 12 ′ of the fastened object 10 ′, the flange 220 is placed on the upper edge of the coupling part 12 ′, thereby preventing the second nut part 200 from being excessively rotated.

[0076] That is, when the flange 220 is not formed on the above-mentioned second nut part 200, when the second nut part 200 is combined with the connecting part 12' of the fastening object 10', the inner upper end of the space part 120 of the first nut part 100 contacts the upper end edge of the connecting part 12', and when the rotating multi-joint nut 50 of the present invention is rotated, as the above-mentioned second nut part 200 and the connecting part 12' are over-combined, the connecting part 12' will push the first nut part 100 away, thereby separating due to the release of the connection between the first nut part 100 and the second nut part 200.

[0077] On the other hand, the inner side of the flange 220 is formed to have a diameter corresponding to the outer peripheral surface of the first fastening portion 110. When the first nut portion 100 is combined with the second nut portion 200, the second nut portion 200 will not move within the space portion 120 of the first nut portion 100 due to the flange 220, but can maintain a firmly combined state.

[0078] Therefore, according to the above structure, the present invention has the following effects: Figures 6 to 9 As shown, according to the fastening objects 10, 10' having different diameters of the coupling parts 12, 12', the corresponding first fastening parts or second fastening parts 110, 210 are selected for fastening, so that the fastening objects 10, 10' having coupling parts 12, 12' with various diameters can be set.

[0079] Furthermore, the present invention has the following effect: after respectively manufacturing the first nut portion 100 having the above-mentioned first fastening portion 110 and the second nut portion 200 having the second fastening portion 210, the first nut portion 100 and the second nut portion 200 are assembled with each other. Thus, compared with forming a thread on the outer peripheral surface of the space portion 120 of the first nut portion 100 in order to obtain the above-mentioned effect, the present invention is easy to manufacture.

[0080] That is, the present invention has the following effects: compared with the case where it is difficult to form threads on the outer peripheral surface of the space portion 120 due to the narrow width of the space portion 120 of the above-mentioned first nut portion 100, and a large amount of manufacturing cost is required, the first nut portion 100 having the first fastening portion 110 and the second nut portion 200 having the second fastening portion 210 are manufactured separately, so that it is easy to manufacture and saves manufacturing costs, and the first nut portion 100 and the second nut portion 200 manufactured separately are firmly assembled and used, thereby facilitating use.

[0081] On the other hand, the present invention has the following effects: the support protrusion 132 is protrudingly formed on the outer peripheral surface of the above-mentioned setting part 130, which prevents hand slippage when the multi-joint nut of the present invention is rotated 50 and transmits the rotation force more stably.

[0082] Furthermore, the first fastening portion 110 may form a first sealing groove 112 and a second sealing groove 114 on the inner side and the outer side of the upper end thereof, respectively.

[0083] Such first sealing groove 112 and second sealing groove 114 may be combined with a seal (not shown) to ensure that airtightness is maintained when combined with a fastener such as a pump combined with the multi-joint nut 50 of the present invention.

[0084] Therefore, according to the multi-joint nut 50 of the present invention as described above, the present invention has the following advantages: a first nut portion having a first fastening portion formed in the center portion is combined with a second nut portion having a second fastening portion formed therein, thereby facilitating manufacturing and can be selectively combined with a first nut portion or a second nut portion that conforms to the diameter of the coupling portion of the fastening object; the first nut portion is formed with a longitudinal groove portion, and the second nut portion is formed with a longitudinal protrusion portion, so that when the first nut portion is combined with the second nut portion, the longitudinal protrusion portion is inserted and combined with the longitudinal groove portion, thereby allowing the rotational force applied to the first nut portion to be transmitted to the second nut portion; the first nut portion is formed with a transverse groove portion, and the second nut portion is formed with a transverse protrusion portion, so that when the first nut portion is combined with the second nut portion, the transverse protrusion portion is inserted and combined with the transverse groove portion, thereby allowing the first nut portion and the second nut portion to be firmly combined.

[0085] The above embodiments illustrate the most preferred examples of the present invention, but the present invention is not limited to the above embodiments. It is obvious to a person skilled in the art that various modifications can be made without departing from the technical concept of the present invention.

Claims

1. A multi-joint nut capable of being fastened by selecting a first fastening part or a second fastening part corresponding to injection ports with different diameters in a container containing a fluid therein, characterized in that: include: A first nut portion having a through center portion, a first fastening portion and a setting portion, wherein the first fastening portion is formed through the center portion and has a thread formed on the through inner circumferential surface, and the setting portion is formed at a predetermined distance to the outside of the first fastening portion, and a space portion is formed between the first fastening portion and the setting portion; and The second nut part is annular and has a second fastening part with threads formed on the inner circumference. The second nut part is inserted into the space part of the first nut part and connected. The inner diameter of the second fastening portion is greater than the inner diameter of the first fastening portion, and the outer peripheral surface of the second fastening portion is tightly bonded to the outer peripheral surface of the space portion. The first nut portion has a plurality of longitudinal grooves formed at predetermined intervals on the outer peripheral surface of the space portion, and the second nut portion has a longitudinal protrusion corresponding to the longitudinal grooves protruding from the outer peripheral surface. The first nut portion has a plurality of transverse grooves formed at predetermined intervals on an outer peripheral surface of the space portion, and the second nut portion has a transverse protrusion formed on an outer peripheral surface thereof corresponding to the transverse grooves.

2. The multi-joint nut according to claim 1, characterized in that: A flange is formed at an upper end portion of the second nut portion to protrude along the central axis direction.

3. The multi-joint nut according to claim 1, characterized in that: The lateral protrusion includes an inclined surface that slopes downward from an upper end toward a lower end.

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