KR100689264B1 - Covers fastening structure for junction box - Google Patents

Abstract

A cover fastening structure for a junction box is provided to facilitate an assembling process by forming an assembling guide on a front end of a hook part connected to a locking unit formed on a bottom cover. In a cover fastening structure for a junction box, a hook part(32) is installed on a first cover. The hook part(32) is elongated in parallel on an outer surface of the first cover. The hook part(32) has a hooking sill(34) on a front end of the hook part(32). A locking part(42) is installed on a second cover. The locking part(42) has a locking piece(44). The locking piece(44) is elongated toward the hook part(32) in parallel on the outer surface of the first cover. An assembling guide(36) is installed on the front end of the hook part(32). The assembling guide(36) is elongated toward the locking piece(44). The assembling guide(36) guides a coupling location of the hook part(32) and the locking part.

Description

Cover fastening structure for junction box

Figure 1 is an exploded perspective view showing the configuration of the main cover and the lower cover of the junction box according to the prior art.

Figure 2 is an exploded perspective view showing the configuration of the hook portion and the locking portion for fastening between the main cover and the lower cover in the prior art.

Figure 3 is an exploded perspective view showing a preferred embodiment of the cover coupling structure of the junction box according to the present invention.

Figure 4 is an exploded perspective view showing the main configuration of the embodiment of the present invention.

5 is a cross-sectional view showing the configuration of a hook portion constituting an embodiment of the present invention.

Figure 6 is a cross-sectional view showing the configuration of the locking portion constituting an embodiment of the present invention.

7A to 7C are operational state diagrams sequentially showing that the embodiment of the present invention operates.

8 is an operation state showing that the deformation restricting wall regulates the degree of elastic deformation of the locking piece in the embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

30: main cover 32: hook portion

34: hanger 35: guide surface

35 ': When walked 35f: Connection surface

36: Assembly guide 38: First guide inclination

38 ': 2nd guide bevel 40: Lower cover

42: locking part 44: locking part

46: hanger 48: hanger

49: guide end 50: strain restriction wall

52: wire through

The present invention relates to a junction box, and more particularly to a cover coupling structure of the junction box for coupling between the covers constituting the junction box.

The main cover, the upper cover, and the lower cover constitute the exterior of the junction box, and various elements, boards, connectors, wires, and the like are installed in the inner space formed by the covers. In the present specification, the cover coupling structure will be described using the main cover and the lower cover as examples.

1 and 2, a plurality of hooks 3 surrounding the outer edge of the main cover 1 extend downward. The hook portion 3 has a predetermined thickness and width and is formed to have a long length to allow elastic deformation. Hanging jaw (5) is formed to protrude from the tip of the hook portion (3).

The locking portion 9 is provided at a position corresponding to the hook portion 3 surrounding the upper edge of the lower cover 7. The locking part 9 is formed integrally with the lower cover 7, and the locking piece 11 is provided. The locking piece 11 is formed to extend toward the hook portion 3 of the main cover 1 in parallel to the outer surface of the lower cover (7). The locking piece 11 is integrally formed on the lower cover 7 to enable elastic deformation, and a hook hole 13 is perforated at the tip, and one end of an inner circumferential surface of the hook hole 13 is hook end 15. ). The hook step 5 of the hook portion 3 is hooked to the hook end 15.

A deformation restricting wall 17 is formed on the outer surface of the lower cover 7 to surround the locking piece 11 to regulate the degree of elastic deformation of the locking piece 11. The deformation restricting wall 17 is formed to surround the lower portion of the locking piece 11.

A plurality of guide portions 19 are formed around the edges of the lower cover 7. The guide portion 19 is formed to extend toward the main cover 1, the tip of which is inclined toward the outside of the side wall of the lower cover 7. This is to guide the lower end of the main cover 1 when the main cover 1 and the lower cover 7 are combined. Reference numeral 20 is a wire through hole.

In the prior art having such a configuration, when combining the main cover 1 with the lower cover 7, first, the lower edge of the main cover 1 is the guide portion 19 of the lower cover 7. Guide inside the tip. In this state, while the hooking jaw 5 of the hook portion 3 is inserted along the tip inner side of the locking piece 11, the locking piece 11 is elastically deformed.

When the hooking jaw 5 of the hook portion 3 is seated on the hooking hole 13 via the hooking end 15 of the tip of the locking piece 11, the hooking jaw 5 is the hooking hole 13. It is fastened to the hook end 15 corresponding to the inner edge of the). At this time, the main cover (1) and the lower cover (7) are mainly close to the corresponding portions corresponding to each other does not make any further proximity, the movement in the direction away from each other is the hook of the locking piece (11) Hanger jaw 5 of hook portion 3 is hooked to end 15 and is prevented.

However, the cover coupling structure of the junction box according to the prior art as described above has the following problems.

First, a plurality of guide parts 19 are formed in the lower cover 7 to guide each other at the initial assembly of the main cover 1 and the lower cover 7. However, the guide portion 19 is protruded to the upper edge of the lower cover 7 can be easily damaged by the external force, there was a problem that the overall shape of the lower cover 7 is complicated.

In the related art, when the main cover 1 and the lower cover 7 are coupled to each other, first, the relative position is set by using the guide unit 19, and the front end of the hook unit 3 is locked. In order to be hooked to the hook hole 13 of the piece 11, there is an inconvenience in that the relative position must be adjusted once again.

Accordingly, an object of the present invention is to solve the problems of the prior art as described above to integrate the configuration for guiding the assembly position of the cover and the configuration for the coupling of the cover.

Another object of the present invention is to relatively increase the strength of the hook portion for coupling between the covers.

According to a feature of the present invention for achieving the object as described above, in the cover coupling structure for coupling the first cover and the second cover constituting the junction box, provided in the first cover and the first cover A locking portion having a hook portion extending in parallel to an outer surface of the hook portion and having a hooking jaw at the distal end thereof, a locking piece provided in the second cover and extending toward the hook portion in parallel to an outer surface of the first cover; It is provided to extend toward the locking piece at the tip of the hook portion is configured to include an assembly guide for guiding the coupling position of the hook portion and the locking portion.

The assembly guide is provided with a first guide slope on the side where the hook jaw is provided, the thickness is thinner toward the tip, the second guide slope on the opposite side of the first guide slope is formed on the tip of the assembly guide To facilitate insertion into the locking portion.

The hooking jaw of the hook portion is provided on a relatively front end side of the hook portion to guide the locking piece of the locking portion, and is formed on the opposite side of the guide surface to hang on the locking piece of the locking portion, It is configured to include a connection surface provided between, the locking piece of the locking portion is drilled with a hook hole is seated on the hook jaw, one side edge of the hook hole forms a hook end on which the hook bottom is hooked.

Guide ends for guiding both ends of the assembly guide are formed in the insertion direction of the assembly guide on the inner surface of the locking piece.

A deformation restricting wall that surrounds the locking piece at a predetermined distance from the locking piece of the locking portion to regulate the degree of elastic deformation of the locking piece is integrally formed on the outer surface of the second cover.

The tip of the assembly guide is seated on the outer surface of the second cover when the hooking jaw of the hook portion is seated in the hook hole of the locking piece.

According to the cover coupling structure of the junction box according to the present invention having the configuration as described above, the configuration for guiding the coupling of the cover constituting the junction box and the configuration that is actually combined with the counterpart is integrally formed to simplify the configuration of the cover At the same time, it is easy to combine the cover, and the configuration for guiding the coupling with the counterpart is formed at the tip of the hook, so that the size of the corresponding part is relatively large, thereby reducing the risk of damage due to external force and the coupling strength between the covers. Has the advantage of being higher.

Hereinafter, a preferred embodiment of the cover coupling structure of the junction box according to the present invention will be described in detail with reference to the accompanying drawings.

3 is an exploded perspective view of a preferred embodiment of the cover coupling structure of the junction box according to the present invention, Figure 4 is an exploded perspective view of the main configuration of the embodiment of the present invention, Figure 5 constitutes an embodiment of the present invention The configuration of the hook portion is shown in cross section, and in Fig. 6 the configuration of the locking portion constituting the embodiment of the present invention is shown in cross section.

As shown in these figures, the main cover 30 of this embodiment is composed of a substantially hexahedron. Inside the main cover 30, various components such as a connector are installed. The outer surface of the main cover 30, in this embodiment both sides are provided with a hook portion 32 in the vertical direction. In this embodiment, a total of four hook portions 32 are provided. Hanging jaw 34 is formed on the hook portion 32. The hooking jaw 34 is hooked to the hook end 48 of the locking piece 44 to be described below. The hooking jaw 34 is formed to be inclined to guide the coupling with the locking piece 44 and the guide surface 35 and the hook surface 32 formed on the opposite side of the guide surface 35 orthogonal hook end 48 If it is walking on 35 'is provided.

Meanwhile, a connection surface 35f for connecting the hook surface 35 'and the guide surface 35 is further provided, and the connection surface 35f becomes a plane having a predetermined area, and the connection surface 35f is By being provided, the size of the hanger 34 is relatively large and its strength is also increased.

The assembly guide 36 is formed to extend at the front end of the hook portion 32. The assembly guide 36 serves to guide the position where the hook portion 32 is coupled to the lower cover 40 to be described below. The assembly guide 36 is configured to be relatively thin, starting from the hook portion 32 toward the tip. That is, the first guide slope 38 is formed along one surface of the assembly guide 36 in the longitudinal direction. The first guide inclination 38 starts at the guide surface 35 of the hanging jaw 34. The inclination angle of the first guide slope 38 is relatively smaller than the inclination angle of the guide surface 35.

A second guide inclination 38 ′ is formed at the tip of the assembly guide 36. The second guide bevel 38 'is formed at the front end opposite to the surface on which the first guide bevel 38 is formed. The second guide inclination 38 ′ serves to guide the insertion of the assembly guide 36 into the locking portion 42 to be described below.

  Lower cover 40 is coupled to the lower portion of the main cover 30, the upper portion is open, the lower portion is closed. The opened upper portion has a shape corresponding to the lower end of the main cover 30. The locking portion 42 is provided at a position corresponding to the hook portion 32 surrounding the leading side edge of the lower cover 40. The locking part 42 is coupled to the hook part 32 so that the main cover 30 and the lower cover 40 are fastened to each other.

The locking piece 44 is formed in the locking part 42. As shown in FIG. 6, the locking piece 44 is integrally formed on the outer surface of the lower cover 40, and an extension direction thereof is parallel to the outer surface of the lower cover 40. The locking piece 44 may be elastically deformed due to its material and shape. A hook hole 46 is drilled at the tip of the locking piece 44. One side of the inner edge of the hook hole 46 forms a hook end 48. The hook end 48 is a portion on which the hook chin 34 of the hook part 32 is hooked.

A guide end 49 is formed along both inner ends of the locking piece 44. The guide end 49 serves to guide the insertion of the assembly guide 36. The guide end 49 guides both ends of the assembly guide 36 so that the assembly guide 36 can be inserted accurately.

A deformation restricting wall 50 is provided to surround the locking piece 44. Both ends of the deformation restricting wall 50 are connected to an outer surface of the lower cover 40, and are configured to surround the locking piece 44 at a predetermined interval. The deformation restricting wall 50 serves to regulate the extent to which the locking piece 44 is elastically deformed. In other words, the locking piece 44 is not elastically deformed so as not to be damaged. Reference numeral 52 is a wire hole.

Hereinafter, the operation of the cover coupling structure of the junction box according to the present invention having the configuration as described above in detail.

Coupling the main cover 30 and the lower cover 40 in the present invention will be described with reference to FIGS. 7A to 7C. In the present invention, in order to combine the main cover 30 and the lower cover 40, first, the assembly guide 36 to be in a position corresponding to the locking piece 44 of the locking portion 42. More precisely, the assembly guide 36 is positioned at an upper portion corresponding to the guide end 49 of the locking piece 44.

As shown in FIG. 7A, the distal end of the assembly guide 36 is positioned inside the distal end of the locking piece 44, that is, between the guide end 49. Of course, in this case, all the assembly guides 36 in the main cover 30 are positioned inside the tip of the locking piece 44 of each corresponding locking part 42 in the lower cover 40.

In this state, when the main cover 30 and the lower cover 40 are adjacent to each other, that is, when the assembly guide 36 is guided along the guide end 49 inside the tip of the locking piece 44, The first guide bevel 38 of the assembly guide 36 is guided along the tip inner side of the locking piece 44. In this way, the state in which the guide surface 35 of the said hanging jaw 34 is located inside the front end of the locking piece 44 is shown in FIG. 7B.

When the assembly guide 36 moves further toward the base of the locking piece 44 in the state of FIG. 7B, the inner side of the tip of the locking piece 44 is guided by the guide surface 35 of the hooking jaw 34. While being guided, the locking piece 44 is elastically deformed as shown in FIG. At this time, the locking piece 44 is elastically deformed in the direction away from the front end of the lower cover 40.

In this process, the degree of elastic deformation of the locking piece 44 is regulated by the deformation restricting wall 50. In fact, FIG. 8 shows a state in which the elastic deformation of the locking piece 44 is regulated by the deformation restricting wall 50.

On the other hand, the second guide inclination 38 ′ is used to more smoothly insert the assembly guide 36 into the locking portion 42 in the state of FIG. 8. Since the second guide bevel 38 'is formed on the opposite side of the tip of the assembly guide 36, the first guide bevel 38, which is in contact with the locking piece 44, is formed at the tip of the assembly guide 36. The upper edge of the lower cover 40 is not caught.

Subsequently, when the main cover 30 and the lower cover 40 apply a force in a direction adjacent to each other, the guide surface 35 of the hooking jaw 34 is along the hook end 48 of the locking piece 44. When the hook stage 48 passes through the connecting surface 35f while being guided, the locking jaw 34 is restored and the hook jaw 34 rests on the hook hole 46, and when the hook 35 ' ) Hangs on the hook end 48. This state is shown in FIG. 7C.

Here, as shown in FIG. 7C, when the hooking jaw 34 of the hook portion 32 is fastened to the locking piece 44 of the locking portion 42, the arrow F is connected to the connection surface 35f of the hooking jaw 34. Even if a force in the direction is applied, the engagement of the hooking jaw 34 and the locking piece 44 is not easily separated. This is because the front end of the assembly guide 36 is supported on the outer surface of the lower cover 40.

Of course, in order to release the coupling between the main cover 30 and the lower cover 40, the front end of the locking piece 44 in the opposite direction to the arrow of Figure 7c hook end 48 and the hooking jaw (34) You can do this by breaking the coupling between them. That is, as described above, after releasing the engagement between the hook end 48 and the hook chin 34, the hook part 32 may be moved in the direction of the arrow F '.

The rights of the present invention are not limited to the embodiments described above, but are defined by the claims, and various changes and modifications can be made by those skilled in the art within the scope of the claims. It is self-evident.

For example, although the hook portion 32 is formed in the main cover 30 and the locking portion 42 is formed in the lower cover 40 in the illustrated embodiment, it is not necessary to do so. Conversely, the locking part may be formed in the main cover 30 and the hook part may be formed in the lower cover 40.

In the cover coupling structure of the junction box according to the present invention as described in detail above, the following effects can be obtained.

First, the assembly guide was formed at the tip of the hook portion formed on the main cover and coupled to the locking portion formed on the lower cover. Therefore, when the assembly guide is first inserted into the locking portion, the hook portion can be naturally guided to the locking portion. Due to the characteristics of such a configuration, there is an effect of facilitating assembly work.

In addition, since the assembly guide and the hook portion are integrally formed, there is no need to form a configuration for guiding the assembly separately on the main cover or the lower cover, so that the configuration of the cover is relatively simple.

In addition, in the present invention, in designing the hook projection of the hook portion, a connection surface exists between the hook surface and the guide surface. This means that the size of the hanger is increased by that much, which means that the strength of the hanger is increased. In addition, an assembly guide was formed at the tip of the hook portion, and in particular, the assembly guide of the portion where the assembly guide and the hanger is connected is relatively thicker than other portions. Therefore, the strength of the hook portion is relatively strong, there is also an effect of reducing the risk of breakage.

On the other hand, the assembly guide formed at the tip of the hook portion is supported by the lower cover in a direction to prevent the coupling of the hook portion and the locking piece, thereby preventing the hook portion and the locking piece from being released by the external force acting on the hook portion The effect of increasing the combined strength of the main cover and the lower cover can also be expected.

Claims (6)

In the cover coupling structure for coupling the first cover and the second cover constituting the junction box, A hook portion provided in the first cover and extending in parallel to an outer surface of the first cover and having a hooking jaw at the front end thereof; A locking portion provided on the second cover and having a locking piece extending toward the hook portion in parallel with an outer surface of the first cover; The cover coupling structure of the junction box, characterized in that it comprises an assembly guide is provided to extend toward the locking piece at the front end of the hook portion to guide the coupling position of the hook portion and the locking portion. According to claim 1, The assembly guide is provided with a first guide slope on the side of the hook projection is provided with a thinner toward the tip is formed, the end of the assembly guide on the opposite side of the first guide slope The cover coupling structure of the junction box, characterized in that the second guide inclination is formed to facilitate insertion into the locking portion. The hooking portion of claim 1 or 2, wherein the hooking jaw of the hook portion is provided at a distal end side of the hook portion to guide the locking piece of the locking portion, and is formed opposite to the guide surface to the locking piece of the locking portion. And a connecting surface provided between the walking surface and the guide surface and the walking surface, Covering structure of the junction box, characterized in that the locking piece is drilled in the locking piece of the locking part is formed, the one edge of the hook hole forms a hook end on which the hook surface is hooked. 4. The cover coupling structure of a junction box according to claim 3, wherein a guide end for guiding both ends of the assembly guide is formed in an insertion direction of the assembly guide on an inner surface of the locking piece. 5. The cover of the junction box according to claim 4, wherein a deformation restricting wall is formed integrally with an outer surface of the second cover to surround the locking piece at a predetermined distance from the locking piece of the locking part to regulate the degree of elastic deformation of the locking piece. Coupling structure. The cover coupling structure of the junction box according to claim 5, wherein the front end of the assembly guide is seated on an outer surface of the second cover when the hooking jaw of the hook portion is seated on the hook hole of the locking piece.

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