KR20230040258A - Waterproof assembly for electric cable - Google Patents

Abstract

The present invention discloses a waterproof assembly configured to provide a waterproof function to an electric device and an electric cable connected thereto. A waterproof assembly for an electric cable, including a cable and a terminal coupled to an end of the cable and coupled to a socket of an electric device, comprises: a housing for accommodating the cable of the electric cable and the terminal; a head rotatably provided on a front portion of the housing and coupled to the socket of the electric device; a filler assembly disposed in a rear portion of the housing to fill a space between the cable and the housing, and configured to surround the cable; and a tail coupled to the rear portion of the housing and configured to press the filler assembly so that the filler assembly closely contacts the cable. According to the present invention, the waterproof assembly can prevent foreign matter from entering the socket, that is, the electric device, as well as the electric cable.

Description

Waterproof assembly for electric cable {WATERPROOF ASSEMBLY FOR ELECTRIC CABLE}

The present invention relates to electrical equipment, and more particularly, to a waterproof assembly configured to provide a waterproof function to an electric cable connected to the electrical equipment.

In general, electrical equipment is driven by electricity supplied from the outside, and an electric cable is used to supply electricity to the electrical equipment. An electric cable may be connected to an external power source and an electric facility, respectively, to supply power from the power source to the corresponding electric facility. In this case, the electric cable may be referred to as a power cable. In addition, among electrical equipment, communication equipment is configured to exchange electrical signals for communication between a transmitting side and a receiving side in order to enable various types of two-way communication, and an electric cable can also be used for the exchange of such electrical signals. there is. In communication facilities, electric cables connect transmitting and receiving equipment to each other and serve as a transmission medium for transmitting electric signals over long distances. In this case, electric cables may be referred to as communication cables. That is, an electric cable is a medium that transmits various types of electrical and physical properties, for example, electricity or electrical signals, and can be connected to electrical equipment to transfer and exchange these electrical properties.

Such an electric cable is typically connected to an electrical facility or communication facility using a connector assembly in which various parts are combined to be firmly connected to the electrical facility and easily mounted and detached. However, since these connector assemblies are exposed to the outside, water may flow into these connector assemblies and electric cables, and the inflowed water may cause failure or damage to electrical or communication facilities. In addition, various foreign substances other than water may flow into electrical or communication facilities through exposed connector assemblies and electric cables, and similarly cause failures and damages. For this reason, a waterproof or shielding structure is required for electric cables to prevent inflow of various foreign substances including water.

Also, generally, the electrical cable is coupled with the connector assembly in advance so as to be directly connected to the electrical or telecommunication facility. Since the connector assembly has a considerable size and complicated structure, it is necessary that a waterproofing or shielding structure is also provided to the electric cable in advance together with the connector assembly. Therefore, if it is not installed on the electric cable together with the connector assembly, that is, if only the connector assembly is installed on the electric cable, the waterproof or shielding structure is difficult to install on the electric cable later in the field. For this reason, the waterproofing or shielding structure needs to be configured to be directly installed on the electric cable as needed at the work site.

The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a waterproof assembly that prevents other foreign substances, including water, from entering an electric cable and electrical equipment connected thereto.

In addition, another object of the present invention is to provide a waterproof assembly that can be directly installed on an electric cable as needed in the field.

In order to achieve the above object, the present invention is a waterproof assembly for an electric cable comprising a cable and a terminal coupled to an end of the cable and coupled to a socket of an electric device, configured to accommodate the cable and the terminal of the electric cable a housing; a head rotatably provided on the front portion of the housing and configured to be coupled to a socket of the electric device; a filler assembly disposed in a rear portion of the housing to fill a space between the cable and the housing and to surround the cable; And it is configured to be coupled to the rear portion of the housing, it is possible to provide a waterproof assembly for the electric cable comprising a tail portion (tail) configured to press the filler assembly in close contact with the cable.

More specifically, the rear part of the housing may be configured to allow the front end of the electric cable to be inserted therein, and the rear part of the tail part may also be configured to allow the front end of the electric cable to be inserted therein.

Also, the side of the pillar assembly may be configured to allow the side of the electrical cable to be inserted therein.

The waterproof assembly according to the present invention may provide a sealing structure to the front portion thereof by using a gasket interposed between the socket and the front end of the socket while being coupled to the socket of the electric device. In addition, the waterproof assembly can provide a substantial sealing structure while stably holding the electric cable using the pillar assembly accommodated in the rear portion thereof. Accordingly, since the waterproof assembly substantially realizes sealing at its front and rear parts, it can be configured to prevent foreign substances from entering not only the electric cable but also the socket, ie the electric device.

In addition, the waterproof assembly of the present invention is coupled to the socket of the electrical device and covers the connection portion of the electrical cable and the socket as a whole, thereby effectively protecting the electrical cable and the socket from external forces such as shock or pressure while preventing their breakage.

Furthermore, since the components of the waterproof assembly are configured to be joined from the front or side of the electric cable 10, they can also be directly installed on a completed electric cable, for example, an electric cable provided with a connector assembly. For this reason, the waterproof assembly of the present invention can be conveniently applied to the electric cable at any time, even on site, if necessary.

As a result, the waterproof assembly of the present invention can provide effective sealing and protection against external force, while enabling convenient assembly in the field. For this reason, the waterproof assembly of the present invention can greatly improve work productivity as well as stability and reliability of electric devices and electric cables.

The effects obtainable in the present invention are not limited to the effects mentioned in the following detailed description, and the effects not mentioned are those skilled in the art from the following description together with the accompanying drawings. will be more clearly understandable to you.

1 is a perspective view showing a waterproof assembly according to the present invention.
Figure 2 is a perspective view showing a waterproof assembly according to the present invention viewed from another direction.
3 is an exploded perspective view illustrating the waterproof assembly of FIGS. 1 and 2;
4 is an exploded cross-sectional view showing the waterproof assembly of FIGS. 1 and 2 .
5 is a side view showing the watertight assembly of FIGS. 1 and 2 including partial cross-sections;
6 is a combined cross-sectional view of the waterproof assembly of FIGS. 1 and 2;

Examples of waterproof assemblies for electric cables according to the present invention are described in detail in the following with reference to the accompanying drawings.

In the description of these examples, the same or similar elements are given the same reference numerals regardless of reference numerals, and duplicate descriptions thereof will be omitted. The suffixes "module" and "unit" for components used in the following description are given or used together in consideration of ease of writing the specification, and do not have meanings or roles that are distinct from each other by themselves. In addition, in describing the embodiments disclosed in this specification, if it is determined that a detailed description of a related known technology may obscure the gist of the embodiment disclosed in this specification, the detailed description thereof will be omitted. In addition, the accompanying drawings are only for easy understanding of the examples disclosed in this specification, and the technical idea disclosed in this specification is not limited by the accompanying drawings, and all changes included in the spirit and technical scope of the present invention, It should be understood to include equivalents or alternatives.

Terms including ordinal numbers, such as first and second, may be used to describe various components, but the components are not limited by the terms. These terms are only used for the purpose of distinguishing one component from another.

It is understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, but other elements may exist in the middle. It should be. On the other hand, when an element is referred to as “directly connected” or “directly connected” to another element, it should be understood that no other element exists in the middle.

Singular expressions include plural expressions unless the context clearly dictates otherwise.

In the present invention, terms such as "comprise", "include" or "have" are intended to designate that the features, numbers, steps, operations, components, parts, or combinations thereof described in the specification exist. However, it should be understood that it does not preclude the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof. In addition, for the same reason, the present invention may also provide some features from combinations of related features, numbers, steps, operations, components, and parts described using the above-mentioned terms, unless departing from the intended technical purpose and effect of the disclosed invention. However, it should also be understood that combinations in which numbers, steps, operations, components, parts, etc. are omitted are also included.

1 is a perspective view showing a waterproof assembly according to the present invention, and FIG. 2 is a perspective view showing a waterproof assembly according to the present invention viewed from another direction. 3 and 4 are exploded perspective and cross-sectional views illustrating the waterproof assembly of FIGS. 1 and 2 . Finally, FIG. 5 is a side view showing the waterproof assembly of FIGS. 1 and 2 including some cross-sections, and FIG. 6 is a combined cross-sectional view showing the waterproof assembly of FIGS. 1 and 2 .

Referring to the aforementioned drawings, the construction of a waterproof assembly that provides a waterproof function to an electric cable will be described in detail in the following.

Examples described in the present invention basically relate to an electric cable 10, which is a medium for transmitting various types of electrical state quantities to a predetermined electric device, as shown in FIGS. 1 and 2. As mentioned in the prior art, the electric cable 10 may be a power cable configured to be connected to an external power source and an electric device to supply electricity from the power source to the electric device. On the other hand, the electrical cable 10 may be a communication cable enabling exchange of electrical signals for communication between the electrical device, more precisely, the communication device and another remote communication device.

In addition, referring to FIGS. 1 and 2, in order to transfer the electrical state carried by the electric cable 10 to the electric device, the electric cable 10 is connected to a predetermined electric device, that is, the electric cable ( 10) and the electrical device may be provided with a connector assembly that forms a physical connection between the electrical cable 10 and the electrical device. As an example of the connector assembly, a socket S may be installed in an electric device. In addition, the electric cable 10 is a connector assembly along with the cable 12, which is a transmission medium of a substantial electrical state quantity, and includes a terminal or plug 11 (hereinafter referred to as “terminal”) provided at the end of the cable 12. can do. While the terminal 11 of the electric cable 10 is primarily firmly fixed to the cable 12 so as not to be separated, it may be configured to be detachably coupled to the socket S of the electric device. The socket S is provided in a predetermined electric device and can be electrically connected to internal parts of the electric device. Accordingly, when the terminal 11 is coupled to the socket S, electrical coupling or connection is achieved between the cable 12 and the electric device by this physical coupling. Therefore, the electrical device is electrically connected to the electrical cable 10 by the combined terminal 11 and the socket S, that is, the connected or assembled connector assembly, and supplies various electrical energy or state quantities including electricity or electrical signals. can receive

As an example, the terminal 11 may also be detachably coupled to the socket (S). More specifically, as shown, the terminal 11 may include a tab 11a configured to selectively engage the socket S while being deformed. When the terminal 11a is inserted into the socket S precisely in its inlet S1, the tab 11a can be caught inside the terminal while being relatively deformed by the socket S, and thus the terminal (11) can be stably coupled to the socket (S). Further, when the tab 11a is deformed, for example, when the tab 11a is pressed, it is released from the socket S, and thus the terminal 11 can be separated from the socket S. Therefore, the terminal 11 can be detachably and selectively coupled to the socket S, and accordingly, the electric cable 10 can also be conveniently coupled or separated from the electric device as needed.

In the following, the present invention will be described as an example of a waterproof assembly that provides a waterproof function to an electric cable 10 that is made of such a power or communication cable and is combined with a connector assembly for connection with an electric device, but of the described waterproof assembly The examples can be applied as it is to various cables configured to transmit electrical properties other than electricity and electrical signals without substantial modification to their principles and configurations. For the same reason, the examples of the waterproof assembly of the present invention can be coupled to various connector assemblies for such various cables as they are without substantial change in principle and configuration. As an example, FIGS. 1 and 2 show an RJ45 connector, which is a standardized communication facility, as the terminal 11, and accordingly, the electric cable 10 may also be a network cable, which is a communication cable, as an example. However, it can be clearly understood by those skilled in the art from the following detailed description that the waterproof assembly of the present invention can be applied to various other cables and connector assemblies in addition to network cables using RJ45 connectors as connector assemblies without substantial changes in principle and configuration. there is.

As shown in all accompanying drawings, FIGS. 1-6, the waterproof assembly according to the present invention may include a housing 100 that basically accommodates the electric cable 10. In addition, the waterproof assembly may include a head part 200 and a tail part 300 disposed in the front and rear of the housing 100, and a filler assembly disposed in the housing 100 (300) may be included.

In the following description of the waterproof assembly itself and its components (100-400), "front" is relative to the target device to which the waterproof assembly and its respective components (100-400) are coupled while facing each other, for example, an electric device. means a location close to it, and “rear” means a location relatively far from such a target device. However, this definition is relative to the reference position (ie, relative proximity and distance), and may change according to a change in the reference position, and the definition of the corresponding part of the waterproof assembly and its components 100-400 may also change. there is.

In addition, as shown in the accompanying drawings, the components 100-400 of the waterproof assembly are configured to enclose the entirety while accommodating other components or electric cables 10 to be coupled for stable connection. Accordingly, unless otherwise stated, the components 100-400 of the waterproof assembly in the following may be made of a hollow cylindrical structure or member. In addition, to prevent electrical leakage while maintaining sufficient strength, the components 100 to 400 of the waterproof assembly may be made of an insulating material, such as plastic or other polymeric resin material, unless otherwise specifically described below. In addition, in the illustrated examples, the components 100 to 400 of the waterproof assembly have circular cross sections, but may also have other shapes, for example, triangular or square cross sections.

Furthermore, as mentioned above, since the components 100-400 of the waterproof assembly have a hollow cylinder structure, unless otherwise stated, all additional members provided to these components 100-400 and The structure may be provided on at least a part of the outer or inner circumference of the 100-400, or may extend or be formed entirely along the circumferential direction of the outer or inner circumference to achieve a more stable structure and smooth function of the waterproof assembly.

Under this premise, to describe the waterproof assembly in more detail, as shown in FIGS. 1 to 6 , the waterproof assembly may first include a housing 100 forming a predetermined inner space. The housing 100 may be formed of a body 110 that is a hollow member or a hollow cylinder to form such an inner space. The housing 100 may accommodate various internal parts, for example, a filler assembly 300 to be described later, in its internal space, and the electric cable 10 is also attached to the housing 100 while being coupled with the internal parts. can be accommodated within. For example, the housing 100 may accommodate therein a terminal 11 of an electric cable 10 and a portion of a cable 12 connected to the terminal 11 . Since the housing 100 surrounds and accommodates the electric cable 10 by this configuration, it basically protects the electric cable 10 from external impact and inflow of foreign substances, and can prevent damage and failure.

More specifically, the housing 100 may include a front portion 111 relatively adjacent to the socket S and a rear portion 112 relatively spaced apart from the socket S. As already discussed above, electrical cables 10 are usually pre-mated with connector assemblies (i.e., terminals 11) to connect directly to an electrical or telecommunications facility. Since these connector assemblies have a considerable size and complex structure, the watertight assembly also typically needs to be provided to the electrical cable 10 in advance along with the connector assembly in order to be properly installed on the electrical cable 10 . Therefore, if it is not installed on the electric cable 10 together with the connector assembly, that is, if only the connector assembly is installed on the electric cable 10, the waterproof assembly is difficult to install on the electric cable 10 later in the field. For example, one end of the electric cable 10, that is, the front end, is connected to the socket S of the target electric device as mentioned above, while the other end, that is, the rear end of the electric cable 10 is externally connected. connected to other electrical devices of However, since these external electrical devices are far apart in most cases, the front portion 111 of the housing 100 of the waterproof assembly is coupled from the rear end of the electric cable 10 disposed in the external electrical device, and then Moving the housing 100 along the electric cable 10 to the front end of the electric cable 10 is practically impossible or a very cumbersome task.

For this reason, in the waterproof assembly of the present invention, at least the rear portion 112 of the housing 100 can be configured to allow the front end of the electrical cable 10 to be inserted therein. That is, the front end of the electric cable 10 may be configured to be inserted from the rear portion 112 . As described above, since the terminal 11 for connection with an electric device is disposed at the front end of the electric cable 10, in order to allow insertion from the rear part 112, the rear part 112 ) needs to have an appropriate configuration in consideration of the size of the terminal 11. For example, as shown in FIGS. 3 to 5 , the first inner diameter D1 of the housing rear portion 112 may be larger than the terminal 11 of the electric cable 10 . More specifically, the first inner diameter D1 of the rear portion 112 may be larger than the height, width, diagonal length and/or diameter of the terminal 11 . Due to the configuration of the rear portion 112, the electric cable 10, precisely its front end, can be directly inserted into the housing 100 through the rear portion 112 of the housing 100. Therefore, the rear part 112 of the housing 100 can be configured to be coupled from the front end of the electric cable 10, and the waterproof assembly is attached to the electric cable 10 as needed at the work site even after the connector assembly has already been provided. It can be configured to install right away. Furthermore, in order for the front end of the electric cable 10 to be smoothly moved and coupled from the rear part 112 to the front part 111 of the housing 100, the entire housing 100 is the front of the electric cable 10. Preferably, it is configured to be engageable from the front end of the electric cable 10 by allowing the end (i.e., the terminal 11) to be inserted therein. To this end, the housing 100 as a whole may be formed to have a first inner diameter D1 or a diameter close thereto.

In addition, since the housing 100 substantially accommodates the electric cable 10 connected to the socket S, in order to prevent external foreign matter from entering the electric cable 10, the electric cable ( It is necessary to form an airtight structure for 10). Therefore, the front part 111 of the housing 100 is configured to come into contact with the socket S, and in this case, the housing 100 and the socket S have a sealed structure or space connected to each other that does not allow foreign substances to enter. can form Precisely, as an example, for the formation of a closed structure, the end (or end face) of the front part 111 is in close contact with the end of the socket (S) facing the end, that is, the front end (or end face). can In addition, the housing 100 is provided on its front portion 111 and may include a gasket 120 configured to come into contact with the socket S. That is, the gasket 120 may be interposed between the housing 100 and the socket S to provide sealing between the housing 100 and the socket S. To be precise, as an example, the gasket 120 is interposed between the end (or end face) of the front portion 111 of the housing 120 and the end (or end face) of the socket S, and is more reliable and robust. A seal can be formed.

More specifically, as shown in FIGS. 3 and 4 , the gasket 120 may include a body 121 provided at a front end of the front portion 111 of the housing 100 . The body 121 is made of an elastic material and may continuously extend along the front end of the front portion 111 while having a thin thickness. In addition, the body 121 is radially inward beyond the front end of the front part 111 so as not to interfere with the electric cable 10 and other components of the waterproof assembly (for example, the head part 120 described later). and may not extend outward. That is, the body 121 may be, for example, a ring member disposed at the front end of the front portion 111 and having the same width as the front end in the radial direction. In addition, the gasket 120 may include a leg 122 extending longitudinally from the body 121, more precisely, from the rear portion thereof. The leg 122 is inserted into the housing 100, that is, its body 110, and thus the gasket 120 can be fixed to the housing 100. For more stable fixation, a pair of legs 122 may be provided on the left and right sides of the body 110, respectively. As will be described in detail later, the waterproof assembly is also coupled to the socket (S) for stable installation and more reliable foreign matter inflow prevention, and when the waterproof assembly is coupled to the socket, the gasket 120 is coupled to the socket (S) and the housing ), it is possible to achieve sealing while being closely adhered to them. Therefore, sealing and foreign matter inflow prevention at the front portion of the electric cable 10 by the gasket 120 can be implemented more reliably.

Furthermore, as described above, since the housing 100 has a size larger than that of the electric cable 10, more precisely, the terminal 11 and is configured to be wrapped around, the electric cable 10 is stable within the housing 100. It is not fixed and can move. For this reason, the housing 100 can be configured to support the electrical cable 10, precisely its terminals 11, non-rotatably about a longitudinal axis, ie non-rotatable about an axial direction. For this support, the housing 100 may be configured to have an inner circumferential surface that at least partially conforms to the outer contour of the terminal 11 . The inner circumferential surface of the housing 100 comes into contact with at least a portion of the outer surface of the terminal 11, and the terminal 11 can be held so as not to rotate.

More specifically, as described above with reference to FIGS. 1 and 2 , since the terminal 11 includes a tab 11a for coupling with the socket S, the housing 100 includes the tab 11a In order not to interfere with the operation of the tab (11a) may be configured to contact and hold the outer surface of the terminal (11) is not installed. For example, as shown in FIGS. 1 and 4-6 , the housing 100 , that is, its inner circumferential surface may be configured to hold while contacting both side surfaces 11b and 11c of the terminal 11 . More specifically, the housing 100 may include first and second surfaces 131 provided on both sides of the inner circumferential surface thereof and contacting both side surfaces 11b and 11c of the terminal 11. there is. In addition, in order to form the first and second surfaces 131, the housing 100 may include first and second protrusions 130 provided on both sides of the inner circumferential surface thereof, respectively. Surfaces facing both side surfaces 11b and 11c of the terminal 11 of the two protrusions 130 may be formed as the first and second surfaces 131 . Therefore, the terminal 11 can be stably placed without being rotated about the axial direction by its first and second surfaces 131 while being stably supported by the solid first and second protrusions 130. . In addition, the gasket 120, that is, its leg 122 can also be inserted into the first and second protrusions 130 having such a rigid structure, and thus can be more stably coupled and supported. On the other hand, the terminal 11 may be allowed to move in the axial or longitudinal direction while contacting the first and second surfaces 131, and thus being guided by the first and second surfaces 131. The watertight assembly, i.e., can be accurately positioned at the intended location within the housing 100.

In addition, when the waterproof assembly is configured to be combined with the socket (S), the waterproof assembly can be stably installed in the electrical device and at the same time provide effective waterproofing to the electric cable (10). For this purpose, the waterproof assembly may include a head 200 provided on the front portion 111 of the housing 100 . The head part 200 may be formed of a body 210 that is a hollow member or a hollow cylinder forming a predetermined inner space. The head portion 200, that is, the body 210 is provided, for example, on the outer periphery of the front portion 111 of the housing 100, and thus is configured to cover not only the electric cable 10 but also a portion of the housing 100. It can be. Therefore, the head part 200 can protect the electric cable 10 without interfering with the electric cable 10 disposed in the housing 100 at least. As well shown in FIGS. 4 to 6 , the head portion 200 includes a coupling portion 220, and this coupling portion 220 may be coupled to the coupling portion S2 of the socket S. For example, the coupling parts 220 and S2 of the head part 200 and the socket S may be made of screw parts configured to engage with each other. For such screw coupling, the head portion 200 may be rotatably coupled to the front portion of the housing 100 . Also, as an example, the coupling portion 220 may be provided on the inner circumference of the front portion of the head portion 200, and the coupling portion S2 may be provided on the outer circumference of the socket S. Accordingly, the head portion 200 may be configured to enclose not only the housing 100 but also the socket S in contact with the housing 100 . For this reason, the head part 200 not only allows the waterproof assembly to be stably installed without being separated from the electric device and the electric cable 10, but also protects the electric cable 10 and the socket S from external impact and inflow of foreign substances. That is, electrical devices can also be protected.

In addition, the screw coupling of the coupling parts 220 and S2 requires rotation and longitudinal movement of the head 200, and the guide structure for guiding the movement of the head 200 is the housing 100 and the head ( 200) can be provided. For example, the housing 100 may include a groove 114 formed to a predetermined depth on its outer periphery. In addition, the head portion 200 may include a rib 230 that extends radially inward from its inner periphery and is inserted into the groove 114 . As shown, the groove 114 extends to a predetermined length in the longitudinal direction of the housing 100, and may also extend throughout the circumferential direction of the housing 100. In addition, the rib 230 may also extend from the inner circumferential portion of the head portion 200 to the entire circumferential shape for stable coupling with the groove 114 . Accordingly, the rib 230 can move stably while being guided by the inner wall of the groove 114 in the longitudinal and circumferential directions of the housing 100 within the groove 114 . Due to the guiding structures such as the rib 230 and the groove 114, the head portion 200 can rotate relatively stably to the housing 100 and be engaged with the socket S while moving in the longitudinal direction. Furthermore, as a guide structure, the housing 100 may further include a flange 115 extending radially outward from its outer periphery. The flange 115 may be spaced apart from the rear portion of the head portion 200 and the rear portion of the groove 114 . Therefore, the rear end of the head portion 100 is caught on the flange 115, whereby the flange 115 limits the longitudinal movement of the head portion 100, and the head portion 100 extends to the housing 100 in the longitudinal direction. escape from it can be prevented.

As described above, since the housing 100 is formed to be larger than the electric cable 10, additional structures and members capable of forming a seal while stably holding the electric cable 10 are required. Also, since the terminal 11 located at the front of the electrical cable 10 is secured by the housing 100, i.e. its first and second surfaces 131, the electrical cable 10 located at the rear of the terminal 11 ), that is, a structure configured to hold the cable 12 is required for stable support of the entire electrical cable 10. For this reason, the watertight assembly may include a filler assembly 300 disposed within the rear portion 112 of the housing 100 . The filler assembly 300 fills a space between the cable 12 and the housing 100, and thus the inner circumferential surface of the housing 100 and the outer circumferential surface of the cable 12 may come into contact with each other. Thus, the filler assembly 300 can hold the cable 12 stationary within the housing 100 and provide an effective seal around the cable 12 . In addition, the filler assembly 300 is made of a cylinder member and can entirely cover the outer circumferential portion of the cable 12, thereby holding the cable 12 more firmly. Furthermore, the pillar assembly 300 may be made of a deformable elastic material. In this case, when the pillar assembly 300 is pressed by the tail part 400 of the waterproof assembly to be described later, it can be deformed and adhered to the cable 12 . Therefore, the pillar assembly 300 can form a sealing structure that stably fixes the cable 12 in the housing 100 and at the same time prevents foreign substances from entering the rear part of the waterproof assembly.

In addition, as described in detail above, the housing 100 is configured to be coupled from the front end of the electric cable 10 so that the waterproof assembly can be easily installed in the field to the electric cable 10 in which the connector assembly is already installed. It can be. That is, the housing 100 may have an inner diameter D1 larger than the terminal 11 of the electric cable 10 . On the other hand, since the pillar assembly 300 is a member disposed within the housing 100, it is difficult to have a large inner diameter unlike the housing 100.

For this reason, in the waterproof assembly of the present invention, the side of the pillar assembly 300 can be configured to allow the electric cable 10 or its side to be inserted therein. That is, the electric cable 10 or a side thereof (ie, cable 12 or a side thereof) may be inserted into the pillar assembly 200 through the side of the pillar assembly 200 . Various mechanisms may be applied to the filler assembly 200 to enable such insertion. For example, the pillar assembly 200 may be formed of two members divided vertically or on both sides. However, the divided pillar assembly 200 may be lost during operation due to its small size, and may not have high strength and rigidity due to the divided structure. Thus, as an example, as shown in FIGS. 3-6 , the filler assembly 300 may include cutouts or slots 311 , 321 , and 331 extending along its side in the longitudinal direction. The slots 311 , 321 , and 331 may extend over the entire sides of the filler assemblies 300 (310, 320, and 330) along the longitudinal direction, and thus, the side portions of the filler assemblies 300: 310, 320, and 330 may be opened. Therefore, when the filler assembly 300 is opened in the vertical direction as indicated by the arrows in FIG. 5, the electric cable 10 or its side can be inserted through the open side, that is, the expanded slots 311, 321, and 331. In addition, even when these slots 311 , 321 , and 331 are formed, the pillar assembly 300 still has a single integrated body, so it can be easily coupled to the electric cable 10 while having sufficient strength. For this reason, the filler assembly 300 can be configured to be coupled to the electrical cable 10, i.e., the cable 12 from the side of the cable 12, so that, like the other components of the watertight assembly, if desired It can be installed on the electrical cable 10 at any time on site.

Describing such a filler assembly 300 in more detail, the filler assembly 300 first includes a first filler configured to surround the cable 12 while directly contacting the cable 12 of the electric cable 10 ( 310) may be included. The first pillar 310 may be made entirely of a hollow cylinder member to surround the cable 12, and may be made of a deformable elastic material. As will be described later, when pressed by the tail portion 400 and the other fillers 320 and 330, the first pillar 310 may be configured to form a seal while directly adhering to the cable 12 and holding it. . In addition, unlike the other pillars 320 and 330 having a constant thickness, the plurality of first pillars 310 may be prefabricated to have different thicknesses, and will closely correspond to the cables 12 of different thicknesses. can

More specifically, the first pillar 310 may include a first slot 311 extending over the entire side along the longitudinal direction thereof. The first slot 311 opens the side of the first pillar 310 so that the cable 12 can be inserted into the first pillar 310 . In addition, the first pillar 310 may include a first recess 312 disposed on the outer periphery of the front portion of the body and extending radially inward. In addition, the first pillar 310 may include a first protrusion 313 positioned at the rear of the first recess 312 and formed on an outer circumference of the body and extending outward in a radial direction. Furthermore, the first pillar 310 may include an auxiliary recess 314 disposed on the outer periphery of the rear portion or end of the body thereof and extending radially inward. These first recesses, first protrusions, and auxiliary recesses 312 , 313 , and 314 are components for stable coupling of the second pillar 320 and the first pillar 310 to be described later, and for this purpose, the circumference of the first pillar 310 It may extend over the entire outer circumference along the direction. The detailed functions of the first recess, the first protrusion and the auxiliary recess 312 , 313 , 314 will be described later in detail along with the corresponding configuration of the second pillar 320 .

In addition, the pillar assembly 300 may include a second pillar 320 configured to entirely surround the first pillar 310 while directly contacting the first pillar 310 . The second pillar 320 may be made entirely of a hollow cylindrical member so as to surround the first pillar 310, and similarly may be made of a deformable elastic material. As will be described later, the second pillar 320 may press the first pillar 310 into close contact with the cable 12 while being deformed while being pressed by the tail part 400 and the other pillar 330. .

More specifically, the second pillar 320 may include a second slot 321 extending over the entire side along the longitudinal direction thereof. The second slot 321 opens the side of the second pillar 320 so that the cable 12 can be inserted into the second pillar 320 . In addition, the second pillar 320 may include a second protrusion 322 disposed on the inner circumference of the front portion of the body and extending radially inward. In addition, the second pillar 320 may include a second recess 323 positioned behind the second protrusion 322 and formed on an inner circumference of the body and extending outward in a radial direction. As shown, the second protrusion 322 is inserted into the first recess 312 of the first pillar 310, and the second recess 323 is the first protrusion 313 of the first pillar 310. ) can be configured to accommodate. By combining the recesses of the first and second pillars 310 and 320 and the protrusions 312 , 313 , 322 , and 323 , the second pillar 320 is stably moved in the longitudinal direction relative to the first pillar 310 or is not separated from the first pillar 310 . can be combined For more stable coupling, like the first recess and the first protrusions 312 and 313, the second protrusion and the second recess 322 and 323 may also extend along the circumferential direction of the second pillar 320 over the entire outer circumference thereof. can

In addition, the second pillar 320 may include a plurality of flaps or blades 324 disposed at the rear thereof. The flaps 324 extend from the body of the second pillar 320, to be precise, from the central portion thereof to a predetermined length in the longitudinal direction, and may be spaced apart from each other at predetermined intervals along the circumferential direction. Due to the elongated body and the gap between the flaps 324, when pressed radially inward, that is, in a direction perpendicular to the central axis of the second pillar 210, the flaps 324 gather together and deform radially inwardly. there is. More specifically, the flaps 324 clamp the rear portion of the first pillar 310 while being deformed toward the cable 12, and the clamped rear portion of the first pillar 310 will come into close contact with the cable 12. can That is, while the rear portion of the second pillar 320 is easily contracted by the flaps 324 and the rear portion of the first pillar 310 is pressed, the cable 12 may be sealed at the rear portion of the waterproof assembly. In addition, a hook 325 protruding inward in the radial direction may be provided at the rear end of each of the flaps 324 . The hooks 325 may be configured to be engaged with the rear end of the first pillar 310 . More specifically, the hooks 325 may be configured to be caught within the auxiliary recess 314 of the first pillar 310 . Accordingly, the flaps 324 are stably caught on the first pillar 310, that is, the rear part thereof, and thus can be deformed to firmly tighten the rear part of the first pillar 310.

Further, the second pillar 320 may include a flange 326 extending radially outward from its outer periphery. As best seen in FIG. 6 , the flange 326 may be configured to hook the end of the rear portion 112 of the housing 100 . Therefore, the assembly of the first and second pillars 310 and 320 is disposed in the housing 100 so as not to be moved in the longitudinal direction by the flange 326, and thus is stably maintained by the other pillars 330 and the tail part 400. It can be deformed under pressure. More specifically, the flange 326 may be disposed in front of the flap 324, precisely its front end. Due to this arrangement, the flap 324 (ie, the rear portion of the second pillar 320 ) and the rear portion of the first pillar 310 may be exposed to the outside of the housing 100 . Accordingly, the exposed rear portions of the first and second pillars 310 and 320 may be appropriately pressed and deformed by the other pillars 330 and the tail portion 400 to form a seal at the rear portion of the waterproof assembly.

Finally, the pillar assembly 300 may include a third pillar 330 configured to surround the rear part of the second pillar 320 while directly contacting the outer circumference of the second pillar 320 . The third pillar 330 may be made of a substantially hollow cylindrical member so as to surround the rear portion of the second pillar 320, that is, the flap 324, and may be made of a deformable elastic material as well. As will be described later, the third pillar 330 is pressurized by the tail part 400, and while being pressurized, the first and second pillars 310 and 320 may be pressed so as to come into close contact with the cable 12. Specifically, the third pillar 330 is disposed within the tail portion 400, and when the tail portion 400 is coupled to the rear portion of the housing 100, along with the tail portion 400 in the longitudinal direction. It may be configured to press the rear portion of the second pillar 320 while moving forward.

More specifically, the third pillar 330 may include a third slot 331 extending over the entire side along the longitudinal direction thereof. The third slot 331 opens the side of the third pillar 330 so that the cable 12 can be inserted into the third pillar 320 . In addition, the third pillar 330 may include a pressing surface 332 provided at its front end. The pressing surface 332 comes into contact with the rear portion of the second pillar 320, that is, the flap 324, and may press the flap 324 to be deformed by force or pressure applied by the tail portion 400. . More specifically, the pressure surface 332, as shown, is oriented obliquely and can thereby press and deform the flap 324 radially inwardly. That is, the pressing surface 332 is formed to be tapered, and more precisely, it may be configured to have an inner diameter that gradually decreases toward the rear. In addition, the third pillar 330 may include a step portion 333 formed on the outer circumference of its body. The step portion 333 is for stable coupling with the tail portion 400, and its function will be described later in detail. Furthermore, the third pillar 330 may include a notch 334 provided at a rear portion thereof. The notch 334 includes an inclined surface and may be formed to be connected to the third slot 331 . Therefore, when the third pillar 330 and the cable 12 are coupled, the cable 12 is guided up to the third slot 331 by the notch 334 and easily removed through the third slot 331. 3 can be inserted into the pillar 330.

In addition, the waterproof assembly may include a tail portion 400 configured to be coupled to the rear portion 111 of the housing 100 . The tail part 400 may be formed of a body 410 that is a hollow member or a hollow cylinder forming a predetermined inner space. The tail portion 400, that is, the body 410 is provided, for example, on the outer periphery of the rear portion 112 of the housing 100, and thus is configured to cover not only the electric cable 10 but also a portion of the housing 100. It can be. Accordingly, the tail portion 400 can protect the electrical cable 10 without interfering with the electrical cable 10 disposed in the housing 100 at least. As well shown in FIGS. 3 to 6 , the tail portion 400 includes a coupling portion 420, and this coupling portion 420 is a coupling portion formed on the rear portion 112 of the housing 100 ( 113) can be combined. For example, the coupling parts 420 and 113 of the tail part 400 and the housing 100 may be made of screw parts configured to engage with each other. As an example, the coupling portion 420 of the tail portion 400 is provided on the inner circumference of the front portion of the tail portion 400, and the coupling portion 113 of the housing 100 is provided on the rear portion of the housing 100. It can be provided on the outer periphery of (112).

In addition, similarly to the housing 100, at least the rear portion 412 of the tail portion 400 is also electrically connected, as described in detail above, for easy coupling of the waterproof assembly and the electric cable 10 in the field. It may be configured to allow the front end of cable 10 to be inserted therein. That is, the front end of the electric cable 10 may be configured to be inserted from the rear portion 412 . Since the terminal 11 is disposed at the front end of the electric cable 10, in order to allow insertion from such a rear portion 412, the rear portion 412 is suitable in consideration of the size of the terminal 11. You need to have a configuration. For example, as shown in FIGS. 3 to 5 , the second inner diameter D2 of the rear part 412 of the tail part may be larger than that of the terminal 11 of the electric cable 10 . More specifically, the second inner diameter D2 of the rear portion 412 may be larger than the height, width, diagonal length and/or diameter of the terminal 11 . Due to the configuration of the rear portion 412, the electric cable 10, precisely its front end, can be inserted into the tail portion 400 through the rear portion 412 of the tail portion 400. Therefore, the rear part 412 of the tail part 400 can be configured to be coupled from the front end of the electric cable 10, and the waterproof assembly can be connected to the electric cable 10 as needed at the work site even after the connector assembly has already been provided. It can be configured to be installed directly on Furthermore, in order for the front end of the electric cable 10 to move smoothly from the rear part 412 of the tail part 400 to the front part, the entire tail part 400 is the front end of the electric cable 10 (that is, , terminal 11) is preferably configured to be engageable from the front end of the electric cable 10 by allowing it to be inserted therein. To this end, the tail portion 400 may be formed to have an inner diameter larger than or equal to the second inner diameter D1 as a whole.

In addition, the tail part 400 may be configured to press the filler assembly 300 into close contact with the cable 12 . To this end, the tail portion 400 may be configured to press while receiving at least a portion of the pillar assembly 300, in detail, a rear portion of the pillar assembly 300. More specifically, the tail part 400 accommodates the third pillar 330 located at the rear end of the pillar assembly 300, in detail, together with the rear parts of the first and second pillars 310 and 320. can be configured. As described above, the rear portions of the third pillar 330 and the first and second pillars 310 and 320 are exposed to the outside of the housing 100 and are pressed into the inner space of the body 410 of the tail portion 400. can be accepted In addition, the tail portion 400 may include a step portion 411 formed on an inner circumference thereof, and the step portion 411 may be engaged with the step portion 333 of the third pillar 330 . Therefore, when the tail part 400 is coupled to the rear part 112 of the housing 100, the third pillar 330 and the tail part 400 are simultaneously engaged with the first and second pillars 333 and 411 by the engagement of the step parts 333.411. The rear parts of the second pillars 310 and 320 are pressed, and thus the rear parts of the first and second pillars 310 and 320 can be deformed to be in close contact with the cable 12 stably. For more stable coupling and simultaneous movement of the third pillar 330 and the tail part 400, the step parts 333 and 411 are formed along the entire outer circumference of the third pillar 330 and the inner circumference of the tail part 400 in the radial direction. can be formed over

By this configuration, the tail part 400 allows the waterproof assembly to be firmly installed on the electric cable 20 like the head part 200, and also forms a reliable seal at the rear of the waterproof assembly so that not only the electric cable 10 In addition, it is possible to prevent external foreign substances such as water and dust from being introduced into the socket S, that is, the electric device.

The configuration of the above-described waterproof assembly can be better understood by its operation, particularly the assembly process, and the operation of such a waterproof assembly will be described in detail in the following with reference to all of FIGS. 1 to 6, which are related drawings. The assembly sequence of the waterproof assembly described below is only an example, and may be changed at least partially without departing from the concept and principle of the present invention.

First, the electric cable 10 is prepared in a coupled state with the connector 11 as a connector assembly, and similarly, an electric device to which the electric cable 10 is connected may also be prepared to include a socket S, which is a part of the connector assembly. . The electrical cable 10 can also be arranged adjacent to the socket S of the electrical device to be connected to the electrical device with the associated connector 11 .

Thereafter, a waterproof assembly may be installed over the electrical cable 10 and the electrical device to prevent entry of foreign matter. During the installation of this watertight assembly the electrical cable 10 can also be connected to the electrical device, ie its socket S.

More specifically, the tail part 400 may first be coupled with the electric cable 10 for installation of the waterproof assembly. In practice, for the coupling of the tail portion 400 and the electric cable 10, the front end of the electrical cable 10, i.e., the terminal 11, is passed through the rear portion 412 of the tail portion 400, i.e., its rear end. It can pass through the tail part 400 while being inserted into the tail part 400 through the opening at the end. As described above, such insertion and penetration is made possible by the second inner diameter D2 of the tail portion 400 that is at least larger than the terminal 11 .

After that, the housing 100 may be coupled with the electric cable 10 . As described above, the head portion 200 is first prepared in a rotatably coupled state to the housing 100, and thus, a preassembly of the housing 100 and the head portion 200 is actually It may be coupled with the electrical cable 10 pre-coupled with the portion 400. More specifically, for coupling with such a preliminary assembly, the front end of the electric cable 10, that is, the terminal 11, passes through the rear part 112 of the housing 100, that is, the opening at its rear end. It is inserted into the housing 100 through and moves to the front part 111 along its inner space. In the front part 111 of the housing 100, the terminals 11 of the electric cable 10 are caught by the first and second surfaces 131 and can be stably placed in the intended position. Such insertion is made possible by the first inner diameter D1 of the housing 100 formed at least larger than the terminal 11, as described above.

After that, the filler assembly 300 may be combined with the electric cable 10 . Specifically, the filler assembly 300 may be coupled to the cable 12 between the pre-coupled tail portion 400 and the housing 100/head portion 200 . More specifically, for coupling of the pillar assembly 300, the electric cable 10 or its side (ie, cable 12 or its side) passes through the side of the pillar assembly 300 to the pillar assembly 200. can be inserted into As described above, the insertion of the electric cable 10 is possible through the slots 311 , 321 , and 331 provided on the side of the pillar assembly 300 .

More specifically, in coupling of the pillar assembly 300 , first, the first pillar 310 may be directly coupled to the cable 12 using the first slot 311 . Thereafter, the second pillar 320 may be coupled to the cable 12 using the second slot 321 and then again coupled to the outer circumference of the first pillar 310 while wrapping the outer circumference. As described above, the first and second pillars 310 and 320 are relatively moved in the longitudinal direction by mutual coupling of the first recess, the first protrusions 312 and 313 and the second protrusion and the second recess 322 and 323. They can be firmly bonded to each other. After that, the third pillar 330 may be coupled to the cable 12 using the third slot 331 . The third pillar 330 is disposed on the rear part of the preliminary assembly of the first and second pillars 310 and 320 and may cover the rear part.

In this way, when the preliminary coupling of the components 100-400 of the waterproof assembly and the electric cable 10 is completed, the final assembly of these pre-coupled components 100-400 and the waterproof assembly and the electric device (That is, coupling with the socket S) may be performed.

First, as the terminal 11 of the electric cable 10 is inserted into the socket S of the electric device, to be precise, its inlet S1, the electric cable 10 for transmitting electrical state quantities such as power or electric signals and Connection of the electrical device may be performed first. After that, the head part 200 may be coupled to the socket S by using the coupling part 220 and the coupling part S2. More specifically, while the head portion 200 rotates with respect to the housing 100, its coupling portion 220 may be screwed into the coupling portion S2 of the socket S1. While such screw coupling is in progress, the head portion 200 and the housing 100 coupled thereto gradually move toward the socket S, that is, forward, and the front end of the front portion 111 of the housing 100 is abutted on the facing end face of the socket (S). Therefore, the gasket 120 disposed at the front end of the front portion 111 of the housing 300 is in close contact with both the socket S and the housing 100, and sealing at the front portion of the waterproof assembly can be achieved. there is.

Then, the preliminary assembly of the first and second pillars 310 and 320 is inserted into the housing 100 through the rear portion 112 of the housing 100. In addition, since the flange 326 of the second pillar 320 is caught on the end of the rear portion 112 of the housing 100, as shown in FIG. 6, the front portion of the preliminary assembly is While disposed inside, its rear portion is exposed to the outside of the housing 100. A third pillar 330 may be disposed at the rear of the exposed preliminary assembly.

Then, the tail part 400 may be coupled to the rear part 112 of the housing 100 . More specifically, while the tail portion 400 rotates, the coupling portion 420 thereof may be screwed to the coupling portion 113 of the rear portion 112 of the housing 100 . While this screw connection is in progress, the tail part 400 can gradually move toward the housing 100, that is, forward, and the third pillar 310 has its step part 333 and the tail part 400 engaged therewith. While being stably supported by the step portion 411 of the tail portion 400, it can be moved forward. Therefore, when the tail part 400 is coupled to the housing 100, the third pillar 310 presses and deforms the first and second pillars 310 and 320, and thus the deformed rear part comes into close contact with the cable 12. It can be. That is, the flap 324 of the second pillar 320 is contracted by the pressurization of the third pillar 310 and tightly clamps the first pillar 310 and the cable 12 . Accordingly, sealing of the rear portion of the waterproof assembly may be achieved by the pillar assembly 300 pressed by the tail portion 400 .

As described above, since the waterproof assembly substantially implements sealing at its front and rear parts, it is possible to substantially prevent foreign substances from entering not only the electric cable 10 but also the socket S, that is, the electric device. . In addition, since the waterproof assembly is coupled to the socket (S) and covers the connection between the electric cable (10) and the socket (S) as a whole, the electric cable (10) and the socket (S) are effectively protected against physical force applied from the outside. can do. Furthermore, since the components 100, 300, and 400 of the waterproof assembly are configured to be coupled from the front or side of the electric cable 10, respectively, the completed electric cable 10, for example, the electric cable 10 provided with the connector assembly can be installed For this reason, it can be conveniently applied to the electric cable 10 at any time, even on site, if necessary.

The above detailed description should not be construed as limiting in all respects and should be considered illustrative. The scope of the present invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the present invention are included in the scope of the present invention.

100: housing 200: head
300: filler assembly 310: first filler
320: second filler 330: third filler
400: tail part

Claims (3)

A waterproof assembly for an electric cable comprising a cable and a terminal coupled to an end of the cable and coupled to a socket of an electric device,
a housing configured to receive a cable and a terminal of the electrical cable;
a head rotatably provided on the front portion of the housing and configured to be coupled to a socket of the electric device;
a filler assembly disposed in a rear portion of the housing to fill a space between the cable and the housing and to surround the cable; and
A waterproof assembly for an electric cable comprising a tail portion configured to be coupled to the rear portion of the housing and configured to press the filler assembly in close contact with the cable. According to claim 1,
the rear portion of the housing is configured to allow the front end of the electrical cable to be inserted therein;
A waterproof assembly for an electrical cable, wherein the rear portion of the tail portion is also configured to allow the front end of the electrical cable to be inserted therein. According to claim 1,
The waterproof assembly for an electrical cable, wherein the side of the filler assembly is configured to allow the side of the electrical cable to be inserted therein.

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