KR100759123B1 - Connector assembly for junction box - Google Patents

Abstract

The present invention relates to a connector assembly of a junction box. In the present invention, at least two connector through holes 22 are formed at an inner side, and a fastening hole 34a having a screw portion formed at an inner circumferential surface thereof is provided between the connector through holes 22 to be fastened to the fastening hole 34a. Cassette block 20 is fastened to the lower cover to shield the internal parts of the junction box by; A plurality of terminal through-holes 42 are formed in which a terminal electrically connected to an external terminal is seated, and both sides are respectively walked in a diagonal direction of the inner surface of the connector through-hole 22, and another diagonal of the inner surface of the connector through-hole 22 is formed. It is configured to include; a connector 40 which is in close contact with each other in both directions. The connector assembly of the junction box according to the present invention can increase the number of terminals seated on the connector 40, reduce assembly time of the product, reduce after-sales cost of the product, and improve the alignment of the terminal. There is an advantage that the electrical contact reliability with other terminals is increased.

Cassette block, Connector, Elastic hook, Hanging jaw, Hanger, Seating slot

Description

Connector assembly for junction box

1 is an exploded perspective view showing a separate embodiment of the connector assembly of the junction box according to the present invention.

FIG. 2 is a cross-sectional view taken along the line AA ′ of FIG. 1; FIG.

Figure 3 is a bottom perspective view showing a cassette block constituting an embodiment of the present invention from the bottom.

Figure 4 is an outer side view showing the outer surface of the connector constituting the embodiment of the present invention.

5 is a combined state of the embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

20: cassette block 22: connector through

24: support part 26: insertion guide channel

28: elastic hook 30: first locking jaw

30a: first guide slope 32: hook portion

32a: 1st rib 32b: 2nd rib

34: protrusion 34a: fastener

36: Seating groove 40: Connector

42: terminal through 44: compartment

46: insertion guide portion 48: locking channel

50: second locking jaw 50a: second guide slope

52: Seating slot part 52a: First slot

52b: second slot 54: terminal support member

The present invention relates to a junction box, and more particularly, to a connector mounting structure of a junction box having a plurality of electronic components such as fuses, relays, and connectors therein.

Junction boxes, for example, are used in automobiles, and can transmit power and control signals to various devices used in automobiles. To this end, many fuses, relays and electronic components are installed inside the junction box.

Accordingly, many wires are connected to the inside of the junction box to electrically connect the fuse, the relay, and the electronic component to the outside. The fuse, the lily, and the electronic components are mounted on a circuit board inside the junction box, and a plurality of connectors are provided for connection between the components and the wire.

A plurality of terminal through holes are formed in the connector. A terminal electrically connected to the tip of the wire is seated in the terminal through hole, and a plurality of external terminals are inserted into the terminal to electrically connect the electronic components to the outside. Of course, the plurality of external terminals are designed to be coupled to the terminal seated on the connector in one assembly process.

However, the above conventional technologies have the following problems.

In order to electrically connect the components inside the junction box and the components outside using the connector, the connector should be firmly fixed inside the junction box. Therefore, the lower cover for shielding the internal parts of the junction box is provided with a projection, the connector is formed with a mounting groove so that the projection is seated. The protruding portion and the seating groove are each formed with a female screw portion, and the connector is fixed to the lower cover by fastening a fastener having a male screw portion to the female screw portion.

Therefore, in the related art, a mounting groove for fixing the connector is formed in a connector in which a plurality of terminals are seated, so that the number of terminals that can be seated in the connector is relatively reduced, and the external parts are electrically connected to the inside of the junction box. If a large number of parts to be connected are required, there is a problem in that a connector is additionally used to increase manufacturing cost. In the related art, the connectors must be assembled to the lower cover by using the fasteners, respectively, which increases the assembly time, thereby degrading the productivity of the product.

In addition, when the connector is repeatedly coupled to or detached from the lower cover, the female thread portion of the connector is worn or damaged due to the friction between the male thread portion of the fastener and the female thread portion of the connector, so that the terminals seated on the connector and the connector must be replaced. Therefore, there is a problem that the post-management cost of the product is increased.

On the other hand, since the connector is supported only one point on the lower cover by the mounting groove is inserted into the projection of the lower cover, the terminal seated in the connector if the connector is fixed to the lower cover without being horizontal There is also a problem in that the alignment of the deterioration of the external terminal is not accurately coupled to the terminal, the electrical contact reliability is inferior.

Accordingly, an object of the present invention is to solve the above problems, and to provide a connector assembly of a junction box to accommodate more terminals.

Another object of the present invention is to reduce the assembly time of the product.

Another object of the present invention is to make the product available for a long time.

Another object of the present invention is to improve the alignment of the terminal seated in the connector.

According to a feature of the present invention for achieving the above object, the present invention is provided with at least two connector through-holes formed on the inside and a screw hole formed in the inner peripheral surface is provided between the connector through the fastening hole A cassette block fastened to a lower cover which shields internal parts of the junction box by a fastener; A connector formed with a plurality of terminal through-holes in which a terminal electrically connected to an external terminal is seated and seated in the connector through-hole; Misinsertion prevention means for preventing the connector from being misinserted into the connector hole; Stripping prevention means for preventing the connector from being randomly pulled out while being inserted into the connector hole; It is configured to include, and the removal prevention means, the hook portion provided in each of the diagonal direction of the inner surface of the connector hole; A seating slot portion formed on both sides of the connector to correspond to the hook portion, and the hook portion being seated thereon; An elastic hook supported at one end of the support part formed on the inner surface of the connector hole and extending at a predetermined distance from the support part, and having a first catching jaw at the front end thereof and capable of elastic deformation; A second catching jaw provided at a position on the connector corresponding to the first catching jaw of the elastic hook and selectively hooking on the first catching jaw; It is configured to include.

The erroneous insertion preventing means is positioned in the diagonal direction of the inner surface of the connector hole, respectively, spaced apart from the corner portion of the connector hole extending in the longitudinal direction to form an insertion guide channel; An insertion guide part provided on both sides of the connector corresponding to the insertion guide channel and seated on the insertion guide channel; A hook part provided in a diagonal direction different from a diagonal direction of the support part of the inner surface of the connector hole; It is formed to correspond to the hook portion on both sides of the connector, the seating slot portion is seated on the hook portion is configured to include.

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A first guide slope is formed on the first catching jaw provided at the front end of the elastic hook, a second guide slope is provided on the second catching jaw, and the second guide slope is in contact with the first guide slope. The elastic hook is elastically deformed, the elastic hook is elastically deformed after elastic deformation, and the first catching jaw and the second catching jaw are engaged with each other to fix the connector to the cassette block.

The hook portion includes a first rib extending in a direction orthogonal to an inner surface of the connector hole and a second rib extending in a direction orthogonal to the first rib on both sides of the first rib, and each of the seating slot portions A first slot and a second slot are formed to correspond to the first rib and the second rib, and the first rib and the second rib are in close contact with the facing surfaces of the first slot and the second slot, respectively.

The connector assembly of the junction box according to the present invention can increase the number of terminals seated on the connector, reduce the assembly time of the product, reduce the after-sales cost of the product, improve the alignment of the terminal and other terminals The electrical contact reliability of the has the advantage of increasing.

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

1 is an exploded perspective view showing a preferred embodiment of the connector assembly of the junction box according to the present invention separately, FIG. 2 is a cross-sectional view taken along line AA ′ of FIG. 1, and FIG. A bottom perspective view showing a cassette block constituting an example is shown, and FIG. 4 is an outer side view showing an outer surface of a connector constituting an embodiment of the present invention.

As shown in these drawings, the cassette block 20 provided inside the junction box is a part in which the connector 40 to be described below is seated. In this embodiment, two connectors are provided in one cassette block 20. 40 is configured to be symmetrically seated. However, the present invention is not limited thereto, and a plurality of connectors 40 may be seated in the cassette block 20. At this time, these connectors 40 are preferably arranged to be symmetrical.

The through-hole 22 is formed through the cassette block 20 up and down. The connector 40 is seated in the connector through hole 22. The connector through hole 22 is formed in a hexahedral space having a substantially rectangular cross section, and an inner surface thereof is provided with support portions 24 positioned in diagonal directions. The support portion 24 is slightly spaced apart from the corner portion of the connector through-hole 22 is formed long along the longitudinal direction of the connector through-hole (22). The support 24 supports the elastic hook 28 to be described below, and is positioned in the diagonal direction of the inner surface of the connector through hole 22 so that the connector 40 is incorrectly inserted into the connector through hole 22. It serves to prevent.

An insertion guide channel 26 is formed between the edge portion of the cassette block 20 and the support part 24. The insertion guide channel 26 is a portion in which the insertion guide portion 46 to be described below is seated. The insertion guide channel 26 guides a direction and a position in which the connector 40 to be described below is seated in the cassette block 20.

The cassette block 20 is provided with an elastic hook 28 extending from the lower end of the support 24 at a predetermined distance from the support 24. The elastic hook 28 has only its base portion connected to the inner wall of the connector through hole 22, and the rest of the elastic hook 28 is separated so that elastic deformation is possible when an external force is applied. The elastic hook 28 is to prevent one side of the connector 40 to be removed by the elastic deformation to prevent the removal of the connector 40, the elastic hook 28 is provided with a first locking jaw (30). The first catching jaw 30 is a part protruding from the elastic hook 28, and the connector 40 seated on the cassette block 20 by the interlocking with the second catching jaw 50 to be described below. Serves to prevent the cassette block 20 from being removed below.

The first catching jaw 30 is provided with a first guide slope 30a. The first guide inclined surface 30a is a part which is guided in contact with the second guide inclined surface 50a to be described below in the process in which the connector 40 is seated on the cassette block 20. The elastic hook 28 is elastically deformed in the process of guiding the guide inclined surfaces 30a and 50a to each other, and is restored after the guidance between them is completed. Such an elastic hook 28 is located in the diagonal direction of the inner surface of the connector hole 22, respectively.

The cassette block 20 is provided with hook portions 32 in different diagonal directions on the inner surface of the connector through hole 22. The hook portion 32 has a cross section of approximately 'T' shape, as shown in FIG. 3. The hook portion 32 is a portion that is hooked to the seating slot portion 52 of the connector 40, and serves to prevent the connector 40 from falling out of the connector hole 22.

The hook portion 32 is a direction perpendicular to the first rib 32a on both sides of the first rib 32a and the first rib 32a extending in a direction orthogonal to the inner surface of the connector hole 22. It consists of a second rib 32b extending to.

The first rib 32a is a portion inserted into the first slot 52a of the seating slot portion 52 to be described below, and both surfaces thereof are in close contact with both sides of the first slot 52a facing the connector. It serves to prevent the flow of 40). The second rib 32b is a part inserted into the second slot 52b of the seating slot part 52, and the surfaces of the second ribs 32b are in close contact with each side of the second slot 52b facing each other. It serves to prevent flow.

As such, the hook portion 32 has a connector 40 seated on the cassette block 20 by increasing the area in which the first rib 32a and the second rib 32b are in close contact with the seating slot portion 52. ) Can be more reliably prevented from flowing in the connector through holes 22 in all directions. In addition, the hook portion 32 has a lower surface thereof in close contact with the lower surface of the seating slot portion 52, so that the connector 40 seated in the connector through-hole 22 is not removed upward. Of course, since the hook portion 32 is formed in the diagonal direction of the inner surface of the connector through hole 22, it also serves to prevent the connector 40 from being incorrectly inserted into the connector through hole (22).

A central portion of the cassette block 20 is provided with a protrusion 34 protruding upward. The protrusion 34 has a fastening hole 34a formed therein, and the fastening hole 34a has a female screw part formed therein. Meanwhile, a fastener (not shown) in which a male screw part is formed is fastened to a lower cover through which the protruding portion is seated in the protrusion 34 and the seating groove 36 to be described below. The cassette block 20 is fixed to the lower cover. The connector 40 seated in each connector hole 22 of the cassette block 20 is slightly different in size (of course, so that the size of the connector hole 22 in which the connector 40 is seated also fits). To prevent the connector 40 from being inserted into the other connector hole 22.

On the bottom of the cassette block 20, as shown in Figure 3, a seating groove 36 is formed. Although not shown, the seating groove 36 is a part where the protruding portion of the lower cover that shields the internal parts of the junction box is seated.

The connector 40 is seated in the connector through hole 22 of the cassette block 20 as described above. The connector 40 is formed with a terminal through-hole 42 to accommodate a plurality of terminals. Partitions 44 are provided at approximately middle portions of both sides of the connector 40. In addition, insertion guides 46 are provided in diagonal directions of both side edges of the connector 40. The insertion guide part 46 is a part seated in the insertion guide channel 26, and guides the direction and position of the connector 40 seated on the cassette block 20 to prevent misassembly of the connector 40. It serves to prevent.

A locking channel 48 is formed between the partition 44 and the insertion guide 46 in a relatively concave manner. The locking channel 48 serves to provide a space for the elastic hook 28 and the second locking jaw 50 to be described below to walk with each other.

One side surface of the locking channel 48 is provided with a second locking jaw 50 protruding from the partition 44 in the insertion guide direction. The second locking jaw 50 is provided with a second guide slope 50a inclined at a predetermined angle. The second catching jaw 50 moves the second guide inclined surface 50a in contact with the first guide inclined surface 30a to elastically deform the elastic hook 28 and then the first catching jaw 30 ) To prevent the connector 40 seated on the cassette block 20 from being removed downward.

Seating slots 52 are formed in different diagonal directions on both sides of the connector 40, respectively. The seating slot portion 52 is formed in a shape corresponding to the hook portion (32). That is, the seating slot 52 is formed with a first slot 52a corresponding to the first rib 32a and a second slot 52b corresponding to the second rib 32b. . The first ribs 32a and the second ribs 32b are in close contact with the first slots 52a and the second slots 52b, respectively, so as to be seated on the cassette block 20. Flow can be prevented.

On the other hand, the terminal support member 54 is inserted into the other opposite side of the connector 40. The terminal support member 54 serves to support the terminal so that a terminal (not shown) seated in the terminal through-hole 42 does not flow.

In the present invention having such a configuration, the insertion guide channel 26 and the insertion guide portion 46 formed by the hook portion 32, the seating slot portion 52, and the support portion 24 are formed in the cassette 40. Used as a means of preventing misinsertion. The first hooking jaw 30 and the second hooking jaw 50 of the elastic hook 28 and the hooking portion 32 and the seating slot portion 52 have a cassette 40 in the connector hole 22. Used as a means of preventing removal. Of course, they also serve to prevent the cassette 40 from randomly flowing in the connector through hole 22.

Hereinafter, the operation of the connector assembly of the junction box according to the present invention having the configuration as described above will be described in detail.

Looking at the assembly process of the present embodiment, the terminal support member is inserted into both sides of the connector 40, and the terminal is seated in the terminal through-hole 42 of the connector 40. The assembled connector 40 is seated in the connector through hole 22 of the cassette block 20. Here, in the present invention, the first guide inclined surface 30a and the second guide inclined surface 50a are provided in the cassette block 20 and the connector 40, respectively, so that the connector 40 moves without being disturbed. The cassette block 20 is smoothly seated.

In addition, the insertion guide portion 46 of the connector 40 and the insertion guide channel 26 of the cassette block 20 guide the direction and the position in which the connector 40 is seated to erroneously assemble the connector 40. It is possible to prevent, thereby shortening the assembly time of the product. Of course, the support portion 24 and the insertion guide portion 46 are formed on the inner surface of the connector through hole 22 and the diagonal direction of the connector 40, respectively, of the connector 40 seated on the cassette block 20. Incorrect insertion is prevented.

In the state in which the connector 40 is seated on the cassette block 20, the projecting portion of the lower cover is seated on the seating groove 36 formed on the bottom surface of the cassette block 20, and the fastening hole of the cassette block 20 is provided. The cassette block 20 is fixed to the lower cover by fastening a fastener to the protruding portion of the lower cover 34a and the lower cover. On the other hand, both edges of the cassette block 20, although not shown, is supported on both sides of the lower cover corresponding to the cassette block 20 can be supported without shaking the lower cover. To this end, the lower cover is formed with a groove shape in which the corners of the cassette block 20 or at least diagonal edges corresponding to each other may be seated.

As such, the state in which the connector 40 is seated on the cassette block 20 is illustrated in FIG. 5. In the state illustrated in FIG. 5, the second hooking jaw 50 of the connector 40 is hooked to the elastic hook 28 of the cassette block 20, so that the connector 40 is not removed downward. That is, the connector 40 may be firmly fixed to the cassette block 20 by the interlocking between the first catching jaw 30 and the second catching jaw 50 of the elastic hook 28.

And, since the elastic hook 28 according to the present invention is provided in the diagonal direction of the inner surface of the connector hole 22, respectively, the elastic hook 28 is on the same line as the center of gravity of the connector 40, the connector 40 ), The flow of the connector 40 is further prevented relatively more than the elastic hook 28 is provided to face in a straight line.

In addition, the hook portion 32 provided in the other diagonal direction of the cassette block 20 is hanged in close contact with the seating slot portion 52 of the connector 40, respectively. That is, the first rib 32a and the second rib 32b of the hook part 32 are respectively seated on the first slot 52a and the second slot 52b of the seating slot part 52. Here, both surfaces of the first rib 32a are in close contact with both surfaces of the first slot 52a facing each other, and each surface of the second rib 32b is each surface of the second slot 52b facing it. Because it is in close contact with, the connector 40 seated on the cassette block 20 does not flow upward. Of course, since the hook portion 32 is provided in the diagonal direction of the cassette block 20, the misinsertion of the connector 40 is prevented.

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

In the connector assembly of the junction box according to the present invention as described in detail above, the following effects can be expected.

That is, in the present invention, the connector is firmly fixed to the cassette block and the cassette block is fixed to the lower cover of the junction box, so that the connector does not have to be provided with a configuration for fastening the connector to the lower cover. It is effective to make the junction box light and small by allowing the terminal to be accommodated.

In the present invention, the connector is detachably coupled to the cassette block without other fastening means, and the cassette block on which the connector is seated is fastened to the lower cover by the fastener. Therefore, in the present invention, since the connector does not have to be fastened one by one to the lower cover, the assembly time of the product is shortened and the mass productivity of the product is improved.

In addition, in the present invention, since only the cassette block needs to be replaced when the screw of the cassette block is worn or broken in the process of fastening or detaching the cassette block to the lower cover, the connector and the terminal when the screw of the conventional connector is worn or broken. Compared to having to replace all of them, the aftercare cost is reduced.

Meanwhile, in the present invention, the second hooking jaws of the connector are respectively hooked to the elastic hooks provided in the diagonal direction of the inner surface of the cassette block, and the hook parts provided in the other diagonal directions of the cassette block are in close contact with the seating slots of the connector, respectively. Thus, the flow of the connector seated in the cassette block is prevented. As such, the cassette block in which the connector is firmly seated is supported by the center of which is fastened to the lower cover, and both ends of the cassette block are supported on both sides of the corresponding lower cover. In the present invention, alignment of the terminal seated on the connector is improved. Also, the electrical contact reliability between the terminal and the external terminal coupled thereto is increased.

Claims (5)

At least two connector holes are formed in the inner side, and a fastening hole having a threaded portion formed on the inner circumferential surface is provided between the connector holes and fastened to a lower cover which shields the internal parts of the junction box by a fastener fastened to the fastening hole. A block; A connector formed with a plurality of terminal through-holes in which a terminal electrically connected to an external terminal is seated and seated in the connector through-hole; Misinsertion prevention means for preventing the connector from being misinserted into the connector hole; Stripping prevention means for preventing the connector from being randomly pulled out while being inserted into the connector hole; Is configured to include, The stripping prevention means, Hanging parts provided in the diagonal direction of the inner surface of the connector hole; A seating slot portion formed on both sides of the connector to correspond to the hook portion, and the hook portion being seated thereon; An elastic hook supported at one end of the support part formed on the inner surface of the connector hole and extending at a predetermined distance from the support part, and having a first catching jaw at the front end thereof and capable of elastic deformation; A second catching jaw provided at a position on the connector corresponding to the first catching jaw of the elastic hook and selectively hooking on the first catching jaw; Junction box connector assembly, characterized in that configured to include. According to claim 1, wherein the misinsertion prevention means, A support part positioned in a diagonal direction of an inner surface of the connector hole and spaced apart from an edge portion of the connector hole and extending in a length direction to form an insertion guide channel; An insertion guide part provided on both sides of the connector corresponding to the insertion guide channel and seated on the insertion guide channel; A hook part provided in a diagonal direction different from a diagonal direction of the support part of the inner surface of the connector hole; And a seating slot portion formed on both sides of the connector to correspond to the hook portion, wherein the seating slot portion is seated on the hook portion. delete The method of claim 2, A first guide slope is formed on the first catching jaw provided at the tip of the elastic hook, and a second guide slope is provided on the second catching jaw. The second guide inclined surface moves in contact with the first guide inclined surface, and the elastic hook is elastically deformed, and the elastic hook is elastically deformed and then retracted so that the first catching jaw and the second catching jaw are hooked to each other. The connector assembly of the junction box, characterized in that fixed to the cassette block. The method of claim 4, wherein The hook portion includes a first rib extending in a direction orthogonal to an inner surface of the connector hole and a second rib extending in a direction orthogonal to the first rib on both sides of the first rib, and each of the seating slot portions First and second slots are formed to correspond to the first rib and the second rib, The connector assembly of the junction box, characterized in that the first rib and the second rib is in close contact with the facing surface of the first slot and the second slot, respectively.

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