CN1210852C - Clamp for connecting front base of fixed terminal - Google Patents

Abstract

The clamp (20) connected to the front seat of the fixed terminal is provided with a clamp main body (21) with a through hole (22); a guide part (23) connected with the main body (21); and can move along the axial direction of the through hole (22) The press pin (24), whose axial movement stroke makes its front end (24a) move out and move in from the other end opening (23b) of the guide part (23), thereby being connected to the clamp body (21). The guide portion (23) has a hollow portion (23c) for the electrical connection portion (6a) of the terminal (6) to reach and to insert the front seat (3). The guide part (23) has a sliding surface (23d) which coincides with the connecting part (17) of said front seat (3) inside the casing (2). The outer shape of the guide part (23) can be inserted into the outer cover (2a), and the outer shape is cylindrical with openings at both ends.

Description

Clamp for attaching the front housing for securing the terminals

technical field

The present invention relates to a jig for connecting a front seat for fixing terminals, the jig is used for connecting a front seat to a terminal receiving cavity from the front end side of the connector housing, a terminal inserted into a connector housing The terminals in the socket are secured.

Background technique

1A and 1B show a connector 1 disclosed in Japanese Patent Application Publication JP9-106846. The connector 1 has a casing 2 formed by injection molding of synthetic resin, a front seat for fixing terminals, a waterproof plug 4, and a plurality of plug-in terminals 6 connected to wires 100. The housing 2 has a cover 2 a for protecting the plug-in terminals 6 . A plurality of transparent terminal receiving cavities 7 are provided inside the housing 2 to be inserted and connected to the electrical connection portions 6a of the plurality of plug-in terminals 6 so as to separate the plurality of plug-in terminals 6 from each other. A lance 9 is provided on the inner wall of the terminal receiving cavity 7 , the lance having a convex portion engageable with a recess 8 formed on the outer skin of the plug-in terminal 6 .

The front seat 3 having a spacer 12 is inserted from the open end of the housing 2a corresponding to the front end of the housing 2. Then, the electrical connection portion 6a of the plug-in terminal 6 passes through a plurality of end surface walls provided on the front seat 3. Hole 11 on 10. A plurality of spacers 12 protruding from the end surface wall 10 are inserted and fitted into grooves 13 formed adjacent to the terminal receiving cavity 7 . The deflection of the plunger 9 is limited by the washer 12 inserted into the groove 13, and the engaging protrusion provided on the plunger 9 engages with the recess 8 of the plug-in terminal 6, so that the plug-in terminal 6 is completely fixed In shell 2.

In this case, the waterproof plug 4 connected to the electric wire 100 is connected to the opposite side of the outer cover 2a of the housing 2, so that each electric wire 100 remains waterproof. An insertion guide piece 14 protrudes from said end surface wall 10 of the front seat 3 . An opening 15 is provided substantially at the center of the planar view of the insertion guide 14, and a front end of a pulling device 16 is hooked with the opening 15 to be pulled out. In FIG. 1B , the direction of pulling out the pulling device 16 is shown by an arrow "a".

In the conventional assembly steps of the connector 1, the front seat 3 for fixing the terminals is manually assembled using pliers, flat rods and the like. That is, the front seat 3 is clamped by pliers and pressed to a predetermined portion of the connector 1 , so that the front seat 3 is connected to the housing 2 . Alternatively, the front seat 3 is mounted to a shallower position in the housing 2a of the connector 1 when using a butt post. Thereafter, the front seat 3 is pressed and pressed to a predetermined portion of the connector 1 by the front end of the butt rod, so that the front seat 3 is connected to the housing 2 .

However, when the front seat 3 is assembled according to the manual operation described above, the part where the front seat 3 is to be connected in the housing 2 is a narrow and deep part in the connector 1 . Therefore, in addition to the troublesome operation, the efficiency is very low, and the electrical connection portion 6a of the plug-in terminal 6 is in danger of being bent.

In addition, visualization of the operation is required in order to see clearly the state in which the front seat 3 is connected to the housing 2, and the operator's workload is great. Therefore, there is a problem that the accuracy of the product deteriorates due to the operator's fatigue, and fluctuations in mass caused by the pressing operation of the front seat 3 increase. There is also the risk of destroying the front seat 3 by gripping the seat 3 with said pliers.

Contents of the invention

The present invention solves the above-mentioned disadvantages, and an object of the present invention is to provide a clamp for connecting a front seat for fixing terminals without bad influence on the front seat itself and the electrical connection portion of the plug-in terminal , and will not increase the workload of the operator. Another object of the present invention is to provide a jig for connecting a front housing for fixing terminals, which enables easy assembly of the front housing and also enables stable quality by uniformly pressing the front housing.

A first aspect of the present invention provides a jig for attaching a front seat for fixing a terminal, the jig for inserting a To the terminal fixing in the terminal receiving cavity of the connector housing, the clamp includes: a block clamp body provided with a through hole; a guide portion, the guide portion has a hollow portion, the hollow portion can allow the terminal An electrical connection part of an electric connector moves forward and allows the insertion of the front seat, and the guide part also has a sliding surface of the front seat, inside the connector housing, the sliding surface coincides with the connection part of the front seat, the guide The part also has an outer shape capable of allowing a guide part to be inserted from the terminal receiving cavity into the outer cover of the connector housing, the outer cover being located on the front end side, the guide part forming a Cylindrical shape, the guide part is connected to the clamp main body so that one open end is inserted into a through hole of the main body and the other open end protrudes at least a length corresponding to the depth of the housing; a pressing pin , the press pin can move along the through hole in the axial direction of the through hole of the main body, and has a stroke that enables the front end of the press pin to move from the other open end of the guide portion in and out so that the press pin is connected to the clamp body.

According to the first aspect of the present invention, by inserting a front seat into a guide portion, and then inserting the other open end side of the guide portion into the housing of the connector housing and moving a press pin forward with a consistent stroke, the The front seat slides on a sliding surface so that the front seat is pressed by the front end of the press pin, and is pressed out from the other end opening and connected to the connecting portion of the front seat inside the connector housing. At this time, the electrical connection portion of the terminal moves inside the hollow portion of the guide portion to be protected.

A second aspect of the present invention provides a jig for connecting a front seat for fixing terminals as provided in the first aspect of the present invention, wherein a protrusion is opposite to the guide portion along the axial direction of the guide portion. A sliding surface of the front seat is formed on an inner surface of the guide portion, and the protrusion partitions a hollow portion to which the electrical connection portion of each terminal moves forward.

According to the second aspect of the present invention, when the front seat is connected to the connector housing, each electrical connection portion in the terminal is moved inside each hollow portion for protection, and the plurality of hollow portions are separated by protrusions. in the orientation section above.

A third aspect of the present invention provides a jig for connecting a front seat for fixing terminals according to the second aspect of the present invention, wherein a lower end of the protrusion has a transversely asymmetrical width shape, and the front seat The upper end cooperates with the lower end of the protrusion so that the front seat has an end edge structure capable of being inserted into the guide portion.

According to the third aspect of the invention, the front seat can be inserted into the guide portion only in a state in which the end edge structure of the front seat coincides with the width shape of the lower end of the protrusion, thereby defining a state , that is, the front seat is inserted into the guide section.

A fourth aspect of the present invention provides a jig for attaching a front seat for fixing a terminal according to the first aspect of the present invention, wherein a guide protrusion engaged with a guide groove formed in the housing of the connector housing A portion is disposed in the guide portion so as to protrude outward.

According to the fourth aspect of the present invention, the guide portion is inserted into the housing of the connector housing only in the state that the guide protrusion of the guide portion is engaged with the guide groove, so that such a state can be restricted. , that is, the guide portion is inserted into the housing.

A fifth aspect of the present invention provides a jig for attaching a front seat for fixing terminals according to the first aspect of the present invention, wherein the jig main body is made of transparent resin.

According to the fifth aspect of the present invention, the travel of the press pin through the main body of the jig can be seen and recognized from the outside of the jig.

Description of drawings

Figure 1A is a partially cutaway perspective view of a connector for illustrating a method of connecting a conventional front seat for securing a terminal;

Figure 1B is a perspective view of a vertical cutaway, showing a connector, in order to illustrate a method of connecting a conventional front seat for fixing a terminal;

Fig. 2 is an exploded perspective view showing an embodiment of the present invention by using a connecting jig to connect a front seat to a connector;

Fig. 3 is an enlarged end view showing the other open end side of a guide portion used in the connecting jig as described in Fig. 2;

Fig. 4A is an enlarged end front view, showing a situation of a front seat connected by the connecting clamp described in Fig. 2 viewed from the side of the spacer;

FIG. 4B is an enlarged front view showing a modified embodiment of the front seat connected by the connecting clip shown in FIG. 2 as viewed from the spacer side.

Detailed ways

Hereinafter, embodiments of the present invention are described with reference to the accompanying drawings. In this case, the same reference numerals are used to denote the same parts or parts having the same function as those shown in FIGS. 1A and 1B .

FIG. 2 shows a connecting jig 20 corresponding to a front seat for fixing a terminal according to an embodiment of the present invention. The connection jig 20 is used to connect a front seat 3 from the front end side of a connector housing 2 to a terminal receiving cavity 7 in order to fix a terminal 6 inserted into the terminal receiving cavity 7 of the connector housing 2 .

In this embodiment, a connector 1 is equipped with a synthetic resin case 2 formed by injection molding, a front seat 3 for fixing terminals, a waterproof plug (not shown), and two wires connected to an electric wire 100. The plug-in terminal 6. The housing 2 has a cover 2 a for protecting the plug-in terminals 6 . Two transparent terminal receiving cavities 7 are provided inside the housing 2 for inserting and fixing the electrical connection portions 6a of the two plug-in terminals 6 so as to separate the two plug-in terminals 6 from each other. A lance (not shown) is arranged on an inner wall of the terminal receiving cavity 7 in the same manner as a conventional wire connector, and the lance has a protrusion that can be arranged on a cylinder of the plug-in terminal 6. A concave portion (not shown) engages.

Said front seat 3 has a vertical front surface wall 10 and a spacer 12 extending horizontally from said end surface wall 10 and substantially forming an L-shape. The front seat 3 is inserted from an open end of the outer cover 2a corresponding to the front end of the housing 2, keeping the front end of the spacer 12 set to a head, so that the front seat 3 is inserted and mounted on A connection portion 17 located in the housing 2 adjacent to the terminal receiving cavity 7 . The washer 12 inserted and fitted to the connecting portion 17 constrains the bending of the lance in the same manner as in the prior art and connects a connecting projection provided on the lance to the plug-in. One recess of the terminal 6 is engaged so that the plug-in terminal 6 is completely fixed to the housing 2 .

Described connecting fixture 20 has a square fixture main body 21, and this square fixture main body 21 has a through hole 22; Also has a guide part 23, and this guide part 23 forms a cylindrical shape, and this cylindrical shape has two open ends, One end opening 23a is inserted into the through hole 22, and the other opening end 23b side protrudes at least a length corresponding to the depth of the outer cover 2a so as to be attached to the clamp main body 21; there is also a pressing pin 24, and the pressing pin 24 Can move in the axial direction of the through hole 22 with such a stroke that the front end 24 a can move in and out from the other end opening 23 b of the guide portion 23 to be connected to the jig body 21 .

Specifically, the jig body 21 is composed of a cube 25 and a plate-shaped body 26 detachably connected to the rear surface 25a of the cube 25 by screws or the like. A support pin 29 protrudes from both side surfaces of the cube 25 parallel to each other.

Described through hole 22 is provided with a circular hole 26a in the plate-like body 26, a circular hole 25c that is arranged on described cube 25 and inserts described circular hole 26a, a circular hole 25c that inserts described circular hole 26a. The hole 25c is formed by a rectangular hole 25d opened on a front end surface 25b on the opposite side of the plate-shaped body 26 . The circular hole 25c has a hole diameter that allows a large-diameter shaft portion 24b formed in the middle of the press pin 24 to slide, and the portion adjacent to the rectangular hole 25d is narrowed to a hole diameter, The hole diameter allows a small-diameter shaft portion 24c of the press pin 24 to slide. The circular hole 26a has a hole diameter that allows the mid-diameter shaft portion 24d of the press pin 24 to slide.

The guide portion 23 has a hollow portion 23c allowing the electrical connection portion 6a of the terminal 6 to move forward and the front seat 3 to be inserted. In addition, the guide portion 23 has a sliding surface 23d of the front seat 3 which coincides with the connecting portion 17 of the front seat 3 in the connector housing 2 . The guide portion 23 is inserted and fitted into the rectangular hole 25d at one end opening 23d and fixed using a set screw (not shown) or the like, so that the guide portion 23 is mounted to the jig body twenty one.

The press pin 24 inserts the small-diameter shaft portion 24c through the boundary portion between the circular hole 25c and the rectangular hole 2d. Its front end 24a is positioned in the hollow portion 23c of the guide portion 23, and the large-diameter shaft portion 24b is positioned in the circular hole 25c. The intermediate diameter shaft part 24d is led out from the circular hole 26a, is mounted outwardly to the small diameter shaft part 24c and is acted on in the direction of the plate-shaped body 26 by a return spring located in the circular hole 25c of the large diameter Between the shaft portion 24b and the boundary portion, whereby the press pin 24 is mounted to the jig main body 21 . A knob 28 is mounted to an outer end of the middle diameter shaft portion 24d of the press pin 24 .

In the above-mentioned connection jig 20, the front seat 3 is inserted into the hollow portion 23c of the guide portion 23 along the slide surface 23d, holding the front surface wall 10 to be placed to a head. Thereafter, the other end opening 23 b side of the guide portion 23 is inserted into the housing 2 a of the connector housing 2 . Thereafter, by placing the hand on the support pin 29 so as to grasp the clamp body 21 and push the knob 28 to move the press pin 24 forward against the elastic force of the return spring 27, the front seat 3 The front end 24a of the pressing pin 24 presses and slides on the sliding surface 23d, and the front seat 3 is pressed out from the opening 23b at the other end. In the manner described above, in the connector housing 2, the front seat 3 is connected to the connecting portion 17. As shown in FIG. At this time, the electrical connection portion 6a of the terminal 6 moves inside the hollow portion 23c of the guide portion 23 to be protected (see FIG. 3). When the external load applied to the knob 28 is removed, the pressing pin 24 is restored to its original position due to the elastic force of the return spring 27 .

During this connecting operation, the pressing pin 24 moves with a fixed stroke, so that the degree of pressing the end clip 3 to the housing 2 is consistent and a stable quality of the product can be obtained.

Also, the front seat 3 can be easily inserted into the guide portion 23 by the operator. In addition, in the housing 2, by bringing the other open end 23b into contact with the end surface of the terminal receiving cavity 7, or by stopping the end surface of the other open end 23b at the end of the terminal receiving cavity 7 At a position in front of the surface (opening side of the housing 2a), the distance is less than the length of the spacer 12 of the end clamp 3, and the guide portion 23 can be inserted into the housing 2a. In the latter case, an adjoining stepped portion (not shown) can be easily provided at the front of the end surface of the terminal receiving chamber 7 . When the front seat 3 is connected to the housing 2, the load applied to the front seat can also be further reduced.

As shown in this embodiment, a protrusion 30 protrudes from the inner surface of the guide portion 23 in the direction opposite to the sliding surface 23d of the front seat 3, and forms a substantially rectangular parallel to the axial direction of the guide portion 23. Elevated, the protrusion 30 is cut into said hollow portion 23c, and the electrical connection portion 6a of each terminal 6 is moved forward into the hollow portion 23c. Protrusions 30 are provided on the inner surface of the guide portion 23 so that when the front seat 3 is connected to the housing 2, each electrical connection portion 6a is in each hollow portion partitioned by the protrusions 30 Move forward, so that the electrical connection part 6a is protected (see Figure 3). By protecting each electrical connection portion 6a, it is possible to effectively prevent the electrical connection portion 6a and the front seat 3 from interfering with each other, and thus the electrical connection portion 6a can be reliably protected.

The lower end 30a of the protruding portion 30 has a laterally asymmetrical width, and the width shape of the upper end of the front seat 3 is consistent with the lower end of the protruding portion 30, so that the front seat 3 has an end edge structure A that allows It is inserted into said guide portion 23 .

In the plan view of the protruding portion 30, the lower end 30a of the protruding portion 30 has a right half step portion 30c and a left half protruding portion 30b in the width direction, as shown in FIG. 3 . An end edge structure A is formed on the upper end of the front seat 3 corresponding to the width shape of the lower end of the protrusion 30, as shown in FIGS. The upper edge portion 10a of the contacting end surface wall 10 and a groove portion 10b receiving the protruding portion 30b are constituted, or are formed by a protruding portion 10d accommodated in the stepped portion 30c and together with the protruding portion The upper edge portion 10c that the end surface wall 10 contacts of 30b constitutes (see FIG. 4B).

According to the above structure, the front seat 3 is inserted into the guide portion 23 in such a state that the end edge structure A of the front seat 3 coincides with the width shape of the lower end 30a of the protrusion 30 . Therefore, it is possible to restrict the front seat 3 from being inserted into the guide portion 23 . That is, the front seat 3 can always be inserted into the guide portion 23 in a correct state.

A horizontal guide protrusion 31 and a vertical guide protrusion 32 protrude from the guide portion 23 toward the outside of the guide portion 23, and the horizontal guide protrusion 31 and the vertical guide protrusion 32 are in contact with Guide grooves 18 and 19 formed in the housing 2a of the casing 2 engage. The guide portion 23 can only be inserted into the housing 2a of the housing 2 in such a state that the horizontal guide protrusions 31 and the vertical guide protrusions 32 are engaged in the guide grooves 18 and 19, respectively, Thereby, the state of inserting the guide portion 23 into the housing 2a is restricted. Therefore, the guide portion 23 can always be inserted into the housing 2a in a correct state.

The front seat 3 inserted into the guide portion 23 in the correct state is further inserted into the cover 2a of the case 2 in the correct state, so that the front seat 3 can be connected to the case 2 correctly.

The jig main body 21 is made of a transparent resin. As the transparent resin, for example, acrylic resin or polycarbonate can be used. The jig main body 21 is composed of the cube 25 and the plate-shaped body 26, however, at least the cube 25 is made of a transparent resin. By using the transparent resin to manufacture the jig body 21 , the travel of the press pin 24 through the jig body 21 can be seen and recognized from the outside of the connecting jig 20 . Therefore, by discriminating the connection state of the front seat 3 to the housing 2 based on the stroke of the press pin 24, it is possible to prevent the insufficient connection of the front seat 3. In addition, the quality of the connector 1 can be stabilized.

The above-mentioned connector 1 is a two-pole connector having two plug-in terminals 6, however, the present invention is not limited thereto, and can also be applied to a multi-pole connector having three or more poles. In addition, two or more press pins may be provided as necessary.

Claims (5)

1. one kind is used for connecting anchor clamps that are used for fixing the front stall of a terminal, these anchor clamps be used for front stall when the front of an electric wire connecting junction shell is connected to described terminal receptive cavity, terminal in the terminal receptive cavity that is inserted into the electric wire connecting junction shell is fixed, and described anchor clamps comprise:

A block jig main body that is provided with a through hole;

A targeting part, this targeting part has a hollow space, this hollow space can be allowed that an electrical connections of described terminal moves forward and be allowed that described front stall inserts, this targeting part also has the sliding surface of a described front stall, in described electric wire connecting junction enclosure, this sliding surface overlaps with the coupling part of described front stall, this targeting part also has an external shape, this external shape can allow that targeting part is inserted into the outer cover of described electric wire connecting junction shell from described terminal receptive cavity, this outer cover is positioned at described front, this targeting part forms the cylindrical shape with two openends, this targeting part is connected to described jig main body, and the through hole and the another one openend that make an openend be inserted into described main body protrude at least one length corresponding to the described outer cover degree of depth;

A pad, this pad can axially moving along described through hole at the through hole of described main body, with have a stroke, the trip makes the front end of pad to move turnover from described another openend of described targeting part, thus this pad is connected to described jig main body.

2. be used for connecting anchor clamps that are used for fixing the front stall of a terminal according to claim 1 a kind of, it is characterized in that one with axially on the inner surface of described targeting part the vis-a-vis described front stall sliding surface formation of the separated protuberance of hollow bulb along described targeting part, the electrical connections of each terminal of described a plurality of terminals moves forward towards hollow space.

3. be used for connecting anchor clamps that are used for fixing the front stall of a terminal according to claim 2 a kind of, a lower end that it is characterized in that described protuberance has a horizontal asymmetric width shape, and the upper end of described front stall cooperates with the lower end of described protuberance, and described thus front stall has an end edge structure makes it can insert described targeting part.

4. be used for connecting anchor clamps that are used for fixing the front stall of a terminal according to claim 1 a kind of, it is characterized in that thereby a guiding protuberance is arranged at outside protrusion the in the described targeting part, described guiding protuberance meshes with the direction recess of the outer cover inside that is formed on described electric wire connecting junction shell.

5. be used for connecting anchor clamps that are used for fixing the front stall of a terminal according to claim 1 a kind of, it is characterized in that described jig main body is by a kind of transparent resin manufacturing.

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