KR100804262B1 - Locking structure of front-holder for connector - Google Patents

Abstract

A locking structure of a front holder for a connector is provided to fix the front holder to the connector through first and second locking and make first and second locking directions orthogonal to each other, thereby preventing that even second locking is performed according as excessive force is applied to the front holder during the first locking work. A terminal is installed in a connector(10), and the connector has a lance for fixing the terminal within a housing(11). One side of the connector is opened to form an entrance(11'). A front holder(20) is firstly locked with the connector through the opened entrance and mounted within the housing. The front holder is secondly locked with the connector in a direction orthogonal to the firstly-locked direction so as to firmly fix the terminal by supporting the lance.

Description

Locking structure of front-holder for connector

1 is a perspective view showing a state in which the front holder according to the prior art is first locked to the connector.

Figure 2 is an exploded perspective view showing the configuration of the locking structure of the front holder for a connector according to the present invention.

Figure 3 is a front view showing a state in which the front holder constituting the embodiment of the present invention is primarily locked to the connector.

Figure 4 is a cross-sectional perspective view showing the configuration of a state in which the front holder constituting the embodiment of the present invention is first locked to the connector.

5 is a front view showing a state in which the front holder constituting the embodiment of the present invention is secondary locked to the connector.

6a to 6c is a working state showing a process in which the front holder constituting the embodiment of the present invention is first locked to the connector.

7a to 7b is a working state showing a process in which the front holder constituting the embodiment of the present invention the second locking to the connector.

Explanation of symbols on the main parts of the drawings

10: Connector 11: Housing

12: pressing window 13 ': through hole

14: Lance 15: Insertion Channel

16: Hanger rib 20: Front holder

21: holder body 22: support plate

24: hanger 26: support rib

28: Hook Hook 30: Inner Seal

The present invention relates to a connector, and more particularly, to a locking structure of the front holder is installed in the connector to secure the terminal.

1 is a perspective view illustrating a state in which the front holder according to the related art is primarily locked to a connector. According to this, the appearance and the skeleton of the connector 1 are formed by the housing 2. The housing 2 is made of a synthetic resin material which is generally an insulator. A lance (not shown) is formed inside the housing 2 to fix a terminal (not shown).

Although not shown in the housing 2, a through hole is formed and the terminal is inserted and fixed. The terminal is made of a conductive metal material, and is generally electrically connected to the terminal of the mating connector.

 The front holder 4 is mounted on the front surface of the connector 1. The front holder 4 serves to fix the terminal in the housing 2. That is, by supporting the lance from below to prevent the lance from sagging, the terminal can be firmly fixed inside the connector 1.

In this case, the front holder 4 is generally coupled to the connector 1 by primary locking and secondary locking. That is, as shown in Figure 1, by the hook hook (not shown) formed in the front holder 4, the front holder 4 is first locked in the housing (2). As a result, the front holder 4 is coupled to the connector 1 so that the front holder 4 is not easily separated, and a part of the front holder 4 is maintained to protrude out of the housing 2. This is illustrated in FIG. 1.

In this state, when the terminal is inserted into the housing 2 in a direction opposite to the direction in which the front holder 4 is inserted, and the front holder 4 is pushed further toward the connector 1, the front holder is Secondary locking is made between (4) and connector (1). As a result, the front holder 4 supports the lance so that the terminal can be more firmly fixed in the housing 2.

As such, the coupling between the front holder 4 and the connector 1 is divided into primary and secondary locking. Therefore, the operator of the process of inserting the terminal in the primary locking state can further push the front holder 4 which is already primary-locked, without the hassle to insert the front holder 4 separately. Will be.

However, the above-described prior art has the following problems.

Primary and secondary locking of the front holder 4 on the connector 1 are made with a certain time difference. That is, in the state in which the front holder 4 is first locked, the combination of the front holder 4 and the connector 1 is transferred for the next process. In the next process, that is, the process of inserting the terminal into the connector 1, the secondary locking is made.

Therefore, an external force may be applied to the assembly in a packing process or a transportation process for transferring to the next process, and unwanted secondary locking may occur between the front holder 4 and the connector 1 by the external force. . This is because, in the first locked state, the front holder 4 is protruded to the outside of the connector 1, as shown in FIG. In addition, since the primary locking and the secondary locking are made in the same direction, the front holder 4 may not be properly pressed during the primary locking operation, and there is a concern that secondary locking may occur.

As a result, an unwanted secondary locking occurs and the worker of the next process has to remove the front holder 4 again and insert a terminal, which causes troublesome work.

Accordingly, an object of the present invention is to solve the problems of the prior art as described above, and to prevent unwanted secondary locking between the front holder and the connector in the primary locked state.

According to a feature of the present invention for achieving the object as described above, the present invention is a terminal is provided, a connector provided with a lance for fixing the terminal in the interior of the housing and the opening is formed in one side, the opening And a front holder which is first locked with the connector through the inlet, and is mounted inside the housing and supports the lance so that the terminal is secondly locked with the connector in a direction orthogonal to the first locked direction so that the terminal is firmly fixed. It is configured by.

 The front holder has a holder body, a support plate formed across the interior of the holder body and inserted below the lance, and protruding from an upper surface of the support plate to be hooked to the connector and primarily locked to the connector. A support rib formed on the upper surface of the support plate to protrude from the jaw, the upper surface of the support plate to protrude, and formed in a direction orthogonal to a direction in which the support rib extends from the inner surface of the holder body; And a hook hook hooked to the housing and second locked with the connector.

The hanger jaw and the support ribs are formed in plural numbers according to the number of the terminals.

A portion of an outer surface of the housing is cut out to form a pressing window in the housing so as to enable secondary locking with the front holder.

A hook rib corresponding to the hook hook is formed inside the housing.

According to the locking structure of the connector front holder according to the present invention having such a configuration, the front holder is located inside the housing of the connector during primary locking, and the primary and secondary locking are made in the direction perpendicular to each other. There is an advantage that unwanted secondary locking does not occur between the front holder and the connector due to the external force applied during the locking operation or during the packing and conveying process.

Hereinafter, a preferred embodiment of the locking structure of the front holder for a connector according to the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is an exploded perspective view of the configuration of the locking structure of the front holder for the connector according to the present invention, Figure 3 is a front view of the front holder constituting the embodiment of the present invention in the connector is shown in front view. 4 is a cross-sectional perspective view of a main portion of the front holder constituting the embodiment of the present invention in the state of the first locking the connector, Figure 5 is a front holder constituting the embodiment of the present invention in the connector secondary locking The state shown is shown in front view.

As shown in these figures, the housing 11 forms the appearance and skeleton of the connector 10. The housing 11 is generally made of an insulating material. As shown in FIG. 2, the inlet 11 ′ is formed by opening one surface of the housing 11, through which the front holder 20 and the mating connector to be described later are inserted.

A portion of the outer surface of the housing 11 is cut off to form a pressing window 12. The pressing window 12, through which the operator presses the front holder 20 to be described later, so that the secondary locking is made. Therefore, the pressing window 12 is formed at least large enough to be pressed manually by an operator.

The terminal mounting part 13 is formed inside the housing 11. The terminal mounting portion 13 is located inside the housing 11 and is surrounded by an outer surface of the housing 11. The terminal mounting portion 13 has a through hole 13 'to be described later, the terminal is installed therein, and the front holder 20 to be described later is provided between the terminal mounting portion 13 and the outer surface of the housing 11. Mounted and fixed.

 Through holes 13 ′ are formed in the terminal mounting part 13. The through part 13 ′ is formed through the terminal mounting part 13 back and forth. The through part 13 'is generally formed by the number of terminals to be described later installed therein. At this time, as shown in Figure 4, the lance (14) for fixing the terminal is formed inside the through portion (13 '), respectively.

An insertion channel 15 is formed in the terminal mounting portion 13. The insertion channel 15 is formed below the through part 13 ′, and is a part into which the support plate 22 of the front holder 20 to be described below is inserted and seated. The insertion channel 15 extends in parallel with the direction in which the through portion 13 'extends, and is formed below the through portion 13' at regular intervals so as not to interfere with the insertion of the terminal.

A hook rib 16 is formed between the through part 13 ′ and the pressing window 12. The hook rib 16 is a part to which the hook hook 28 formed on the front holder 20 is hooked to fix the connector 10 and the front holder 20. The hook rib 16 is formed to extend in parallel with the direction in which the through part 13 ′ extends like the insertion channel 15.

Although not shown, the connector 10 is inserted into and fixed to the connector 10. That is, referring to FIG. 2, a plurality of terminals are inserted at the rear of the connector 10 and seated in the through part 13 ′. At this time, the terminal is prevented from being separated from the connector 10 by being hooked by the lance 14. However, when the lance 14 is used inside the vehicle in a high temperature environment, sagging may occur or be deformed, so that the front holder 20 to be described later will be mounted.

The front holder 20 is mounted to the connector 10. The front holder 20 is inserted into the connector 10 and serves to secure the coupling between the terminal and the housing 11 by supporting the lance 14 from below. The front holder 20 is made of a synthetic resin material that is an insulator like the housing 11.

The skeleton of the front holder 20 is formed by a holder body (21). The holder body 21 is made in a substantially rectangular frame shape corresponding to the outer surface of the terminal mounting portion 13. That is, the holder body 21 is formed to penetrate back and forth so that the mating connector can be connected to the connector 10. And, the holder body 21 is made of a size that does not protrude out of the housing 11 in the state that the front holder 20 is first locked (see Fig. 3).

As shown in FIG. 2, the support plate 22 is formed across the inside of the holder body 21. The support plate 22 is inserted and seated in the insertion channel 15 formed at the lower portion of the through portion 13 ′. In this case, the support plate 22 may be provided in plural layers depending on the number of the through holes 13 ′ and the type of the connector 10.

Hanging jaw 24 is formed on the upper surface of the support plate 22. The hooking jaw 24 is for primary locking of the connector 10 and the front holder 20 and is formed to protrude on the upper surface of the support plate 22. That is, the hooking jaw 24 is formed at the position corresponding to the lance 14, the number of the through-hole 13 '. As shown in FIG. 4, when the front holder 20 is first locked to the connector 10, the hooking jaw 24 is positioned at the rear of the lance 14, whereby the front holder ( 20 may be prevented from being separated from the connector 10.

In this case, as shown in FIG. 5, the hooking jaw 24 is fixed to the housing 11 by being partially or entirely hooked to the lance 14 even in a second locked state.

A support rib 26 is formed on the support plate 22. The support rib 26 is positioned below the lance 14 to support the front holder 20 in the state in which the front holder 20 is second locked to the connector 10, thereby preventing sagging of the lance 14. Part. The support ribs 26 may be formed in various widths and heights according to the size and position of the lance 14.

Therefore, the support rib 26 is located on the right side of the hanging jaw 24 when viewed with reference to FIG. 2. The support ribs 26 extend in the direction in which the front holder 20 is first locked to the connector 10. That is, the support ribs 26 are formed in parallel with the direction in which the through hole 13 ′ extends and protrude from the upper surface of the support plate 22 by a predetermined height.

A hook hook 28 is formed inside the front holder 20. The hook hook 28 is a portion for allowing the front holder 20 to be secondly locked to the connector 10 and formed to correspond to the hook rib 16. Like the support plate 22, the hook hook 28 may be formed in plural numbers according to the number of the through holes 13 ′ and the type of the connector 10.

In this case, secondary locking is performed in a direction orthogonal to the direction in which the front holder 20 is first locked. That is, when the front holder 20 is pushed through the pressing window 12, the front holder 20 moves to the left side when viewed based on the drawing, and thus the hook hook 28 moves the hook rib. By locking on (16), secondary locking is achieved. This is illustrated in FIG. 5. Of course, based on the drawing, the pressing window 12 is formed on the left side of the housing 11, the hooking jaw 24 is located on the right side of the support rib 26, the front holder 20 It can also be pushed to the right to allow secondary locking.

An inner seal 30 may be mounted in the housing 11. That is, when the connector 10 is used in a humid environment, the inner seal 30 is inserted around the outer surface of the through part 13 ′ to prevent water from penetrating into the housing 11. And press-fit.

Hereinafter, the operation of the locking structure of the connector front holder according to the present invention having the configuration as described above will be described in detail.

6A to 6C, a process in which the front holder constituting the embodiment of the present invention is first locked to the connector is shown in a working state diagram. In FIGS. 7A to 7B, the front holder constituting the embodiment of the present invention is connected to the connector 2. The process of blocking is shown in the working state diagram. Accordingly, the front holder 20 constituting the present invention supports the lance 14 formed in the housing 11 so that the terminal installed in the housing 11 of the connector 10 can be firmly fixed. Play a role.

In this case, the front holder 20 is coupled so as not to be separated from the connector 10 through primary locking, and the terminal is secondly locked while being inserted into the through hole 13 'so that the lance 14 Will be supported from below.

First, the process of first locking the front holder 20 will be described. As shown in FIG. 6A, the front holder 20 is positioned in front of the inlet 11 ', and the hooking jaw 24 and the lance are disposed. Let the position of 14 correspond. Then, the front holder 20 is inserted into the housing 11. That is, the support plate 22 is inserted into the insertion channel 15 and moves toward the lance 14.

 In this process, the hooking jaw 24 comes into contact with the lance 14, and when the front holder 20 is pushed further, the hooking jaw 24 elastically deforms the lance 14 while the lance 14 is elastically deformed. 14) to the rear. This is shown in Figure 6c.

 In this case, the hook jaw 24 is caught by the lance 14, so that the front holder 20 is not separated from the housing 11. At this time, since the primary locking direction and the secondary locking direction of the front holder 20 are orthogonal to each other, the operator is prevented from excessively pressing the front holder 20 to generate the secondary locking during the primary locking operation.

In this state, the combination of the front holder 20 and the connector 10 is packed and transported for the next process, that is, the terminal insertion process. At this time, as shown in Figure 6c, since the front holder 20 does not protrude to the outside of the housing 11, unwanted secondary locking by the external force acting on the connector 10 in the above-described packaging and transport process. This is avoided.

Next, a terminal is inserted into the connector 10. That is, the terminal is inserted from the direction opposite to the direction in which the front holder 20 is inserted and is positioned in the through portion 13 ′. At this time, the terminal is fixed by the lance 14, the inside of the housing (11).

In this state, the front holder 20 is secondarily locked to the connector 10. That is, by pressing the front holder 20 through the pressing window 12, the front holder 20 is moved to the left side of the inside of the housing 11, when seen with reference to the drawings, and thus the support Ribs 26 are located below the lances 14. At the same time, the hook hook 28 is fixed to the hook rib 16 so that the front holder 20 does not flow in the direction of the pressing window 12. At this time, since the hooking jaw 24 is still located at the rear of the lance 14, the front holder 20 is kept fixed inside the housing 11.

As a result, the front holder 20 prevents the lance 14 from sagging so that the terminal can be firmly coupled to the inside of the housing 11. In addition, the flow in the primary locking direction of the front holder 20 is the hanger 24 is hooked to the lance 14, and the flow in the secondary locking direction is the hook hook 28 is the hook rib 16 Is prevented by

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, to prevent unwanted secondary locking by external forces by orthogonal to the directions of primary and secondary locking, not only the front holder 20 as in the embodiment of the present invention, but also the rear holder and other fixing structures. May be applied. In addition, the hook hook 28 may be formed in the housing 11 instead of the front holder 20, and a corresponding hook rib 16 may be formed in the front holder 20.

In the locking structure of the connector front holder according to the present invention as described in detail above, the following effects can be obtained.

In the present invention, the front holder is fixed to the connector through primary locking and secondary locking, and the primary locking direction and the secondary locking direction are made orthogonal to each other. Therefore, excessive force is applied to the front holder during the first locking operation, thereby preventing the second locking.

In addition, since the front holder does not protrude out of the housing in the primary locking state, in the process of packaging and transporting the combination of the front holder and the connector for the next process after the primary locking, even if an external force is applied to the connector, Secondary locking can be prevented. As a result, there is no need to release unwanted secondary locking, which improves workability.

In addition, in the present invention, since the first locking and the second locking are made in different directions, the front holder is more firmly fixed to the connector, thereby increasing the operation reliability of the connector.

Claims (5)

A connector provided with a terminal, and having a lance for fixing the terminal inside the housing, the connector having an opening formed at one surface thereof; The first locking with the connector through the opening inlet is mounted inside the housing, the front secondary locking with the connector in a direction orthogonal to the first locking direction so as to support the lance so that the terminal is firmly fixed holder; Locking structure of the front holder for the connector comprising a. The method of claim 1, wherein the front holder A holder body; A support plate formed across the interior of the holder body and inserted below the lance; A hanging jaw protruding from an upper surface of the support plate to be locked to the connector by hooking on the lance; A support rib formed on the upper surface of the support plate so as to support the lance and extending in the primary locking direction to protrude; A hook hook formed on an inner side surface of the holder body in a direction orthogonal to a direction in which the support rib extends, the hook hook being secondly locked to the connector by being engaged with the housing; Locking structure of the front holder for the connector, characterized in that configured to include. The locking structure of the front holder for a connector according to claim 2, wherein a plurality of the hanging jaws and the support ribs are formed according to the number of the terminals. The locking structure of any one of claims 1 to 3, wherein a part of an outer surface of the housing is cut off to form a pressing window in the housing so as to enable secondary locking with the front holder. 5. The locking structure of claim 4, wherein a hook rib corresponding to the hook hook is formed inside the housing.

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