CN201699214U - Locking device for electrical connectors - Google Patents

Abstract

The utility model discloses a locking device of an electric connector, which is provided with a body and a positioning cover. One side of the body is provided with a joint part, the joint part is axially provided with a plurality of terminal grooves for accommodating contact terminals, the open part of each terminal groove is provided with a pressing piece, the front part of the joint part is connected with a skirt part, and at least one side wall of the skirt part is convexly provided with a tenon. A hollow containing chamber is arranged in front of the positioning cover, a slotted hole is formed on the rear bottom plate corresponding to each contact terminal, and at least one inserting piece is arranged in the rear bottom plate corresponding to the pressing piece in an axially protruding manner; the positioning cover is oppositely provided with at least one elastic buckling piece corresponding to the side wall with the tenon, and the movable end of the rear end of each elastic buckling piece is longitudinally provided with a buckling groove. When the positioning cover is sleeved on the body, after the elastic buckling pieces and the buckling grooves thereof are jacked up and buckled by the tenons which are arranged oppositely, the movable end at the rear end of each elastic buckling piece is turned into a straight state from tilting, and the inserting piece inside the positioning cover applies pressure deformation to the pressing piece of the terminal groove inside the body, so that each contact terminal is positioned and locked in the terminal groove.

Description

Locking device for electrical connectors

technical field

The utility model relates to an electric connector, in particular to an electric connector with a locking device.

Background technique

Electrical connectors are often used in electrical products, and their main purpose is the transmission of power or signals. Therefore, electrical connectors have been widely used in the connection of information products and are an indispensable component.

In practical applications, the use of electrical connectors is not only limited to the aforementioned electrical products, but also widely used in the circuit system of automobiles and locomotives as a connection of lines. In order to ensure that the contact terminals in the electrical connector can be stably positioned and locked, the known electrical connector is composed of a body and a cover. Wherein, the joint part of the body has a plurality of terminal slots, and each contact terminal is embedded in the terminal slots and partially exposed. However, before the plurality of pins of a complementary connector can be stably inserted into the corresponding contact terminals of the electrical connector, the contact terminals must be in a positioning and locking state. Therefore, the cover sleeved on the joint portion of the body is an indispensable component for the electrical connector.

For example, Chinese Patent Publication No. CN 101032058A (corresponding to WIPO International Publication No. WO2006/034865) discloses a locking device for a connector assembly and a connector provided with the device. It consists of a cover body and a contact carrier module. The front and middle sections of the joystick set obliquely on the side wall of the cover have first and second locking fingers respectively; when the cover is sleeved on the joint at one end of the contact carrier module, the first at the front end When the locking finger touches or buckles the upright protruding from the side wall of the contact carrier module, the rear arm at the rear end tilts up obliquely, so that the front end of the complementary connector interferes with the rear arm, making the complementary connector The pins of the connector do not engage the internal contact terminals of the contact carrier module.

Then, continue to push the cover body to move toward the inside of the joint portion, and when the second finger is passed over and snapped onto the upright post, the joystick is supported by the upright post and becomes straight. At this time, the front end of the complementary connector can move toward the contact carrier module without being blocked by the rear arm at the rear end of the joystick, and form an electrical connection between the plug pin and the contact terminal.

During the socketing process of the cover body and the contact carrier module, a protruding plug piece is provided inside the cover body corresponding to the position of the pressure piece at the opening of each terminal groove, and the plug piece will deform the pressure piece. , so as to produce a positioning and locking effect on the contact terminal.

Although the contact carrier module is socketed by the cover body, the internal contact terminals can be in a locked state, so as to avoid poor contact with the pins of the complementary connector. However, the significant deficiency of this case is that the operating rod of the cover is only connected to the side wall through a small rotation point, and is easily broken, so that the locking effect is lost after the operating rod is separated from the cover. Furthermore, the locking mechanism between the cover body and the side wall of the contact carrier module is too complicated, difficult to open the mold, and has high dimensional precision, which consumes excessively high production control costs, and thus needs to be improved urgently.

Utility model content

The main purpose of the utility model is to provide a locking device for an electrical connector. When the locking device is socketed with the positioning cover by using the body, if the socketing is not secure, the rear end edge of the elastic buckle on the side wall of the positioning cover will be warped. , so as to block the insertion connection of the complementary connector; and when the body and the positioning cover are inserted firmly, the plurality of contact terminals in the body can form a positioning and locking state.

The secondary purpose of the utility model is to provide a locking device for an electrical connector. The locking device has the advantages of simplified structure, easy mold opening, reduced production control cost, and easy detection of incomplete assembly.

In order to achieve the aforementioned purpose, the technical means adopted by the utility model is to provide a locking device for an electrical connector, which includes:

A body, one side of which has a joint part, and the joint part has a plurality of terminal grooves in the axial direction, so as to accommodate the contact terminals. a skirt having a tenon protruding from at least one side wall of the skirt; and

A positioning cover has a hollow chamber in front of it, slots are opened on the rear bottom plate corresponding to each contact terminal, and at least one plug-in piece is axially protruded from the inside corresponding to the pressing member; the positioning cover is provided opposite to the side wall corresponding to the tenon. There is at least one elastic buckle, and a buckle groove is longitudinally opened at the movable end of the rear end of each elastic buckle;

When the positioning cover is socketed on the body, each elastic buckle and its buckle groove are jacked up and fastened by the tenons arranged oppositely, so that the movable end of the rear end of the elastic buckle changes from being tilted to a straight state, so that The inserting piece inside the positioning cover presses and deforms the pressing piece of the terminal slot inside the body, so that each contact terminal is positioned and locked in the terminal slot.

In the locking device of the electrical connector, a guide groove for the movement of the tenon is defined in the buckle groove between the inner wall of the front end of the side wall of the positioning cover and the elastic buckle.

The locking device for the electrical connector, wherein the guiding groove is a groove on an inclined surface that is deep on the outside and shallow on the inside.

In the locking device for the electrical connector, a U-shaped hollow groove is formed around the elastic buckle, and an unlocking groove is further provided at an appropriate position of the hollow groove.

The locking device of the electrical connector, wherein the pressing member has a fork-shaped notch, and the fork-shaped notch is deformed and expanded after being inserted by the plug-in piece, so that the positioning protrusions on the outside thereof are snapped into the pre-contact terminals. set in the positioning groove.

The beneficial effect of the utility model is that a tenon protrudes from the side wall of the skirt of the body, and when the positioning cover is sleeved on the body, the elastic buckle of the positioning cover is raised by the tenon, so that the rear end of the elastic buckle The movable end is tilted up to prevent the insertion of the complementary connector until the buckle groove of the elastic buckle forms a buckle with the tenon, so that the elastic buckle returns to a straight state, which is conducive to positioning the plug-in piece inside the cover to the body The pressing part of the inner terminal groove applies pressure and deforms, so that each contact terminal is positioned and locked in the terminal groove, so as to facilitate the combination of the complementary connector and the electrical connector. In addition, the utility model has the advantages of simplifying the lock structure, easy mold opening, reduced production control costs, and easy detection of incomplete assembly. It can be called a great example of similar items.

In order to further reveal the specific technical content of the utility model, first please refer to the accompanying drawings, wherein, Fig. 1 is a three-dimensional exploded view of the utility model electrical connector, and Fig. 2a to Fig. 2b are the three-dimensional flow of the utility model when the positioning cover is combined towards the body Fig. 3a to Fig. 3b are partial enlarged cross-sectional views when the positioning cover is combined towards the body, and Fig. 4 is a cross-sectional view taken along the line A-A in Fig. 2b.

Description of drawings

Figure 1 is a three-dimensional exploded view of the electrical connector of the present invention;

Fig. 2a to Fig. 2b are three-dimensional flowcharts when the positioning cover of the present invention is combined towards the body;

Figures 3a to 3b are partially enlarged cross-sectional views of the positioning cover of the present invention when it is combined towards the body; and

Fig. 4 is a cross-sectional view of Fig. 2b taken along line A-A.

Detailed ways

As shown in FIG. 1 and FIG. 4 , basically, the electrical connector of the present invention is composed of a body 1 and a positioning cover 2 .

Wherein, the body 1 is made of insulating material, such as plastic. A joining portion 11 protrudes from one side of the body 1 , and the front of the joining portion 11 adjoins a skirt portion 12 with a larger size integrally connected thereto. Wherein, the joint portion 11 is used for docking of a complementary electrical connector to form an electrical connection. Therefore, the joint portion 11 is provided with a plurality of terminal slots 13 connected to the accommodation space 121 in the axial direction, which are accommodated by the contact terminals 14. and the wires 141 of each terminal 14 pass through the terminal slot 13 .

Please refer to Fig. 1 and Fig. 4 again, the opening part of each terminal groove 13 has the setting of a pressing member 131, and the positioning cover 2 corresponds to at least one position of a plurality of pressing members 131 which are arranged in parallel in the longitudinal direction. Plug-in pieces 221; when each plug-in piece 221 is moved toward and inserted into the fork-shaped notch 132 of the corresponding pressing member 131, the fork-shaped notch 132 can be deformed and expanded, so that the external positioning protrusion 133 can be buckled In the predetermined positioning groove 142 of the contact terminal 14 , each contact terminal 14 is positioned and locked.

The technical feature of the body 1 is that a pair of wedge-shaped tenons 122 protrude from opposite side walls 121 of the skirt 12 .

The positioning cover 2 is also made of insulating material, such as plastic. The positioning cover 2 has a hollow step-shaped chamber 21, the front opening of which is used to socket the body 1, and the interior of the bottom plate 22 axially protrudes from the aforementioned plurality of inserts. The tabs 221 are provided with slots 222 (shown in FIG. 4 ) corresponding to the positions of the contact terminals 14 , so as to allow the pins of the complementary connector to pass through to form an electrical connection with the contact terminals 14 .

The technical feature of the positioning cover 2 is that a pair of elastic clips 231 are provided opposite to the side walls 23 corresponding to the pair of side walls 121 of the main body 1, and a snap groove 232 is provided longitudinally at the movable end of the elastic clips 231, so that When forming a buckle with the aforementioned tenon 122, in addition to making the main body 1 and the positioning cover 2 unable to disengage axially, the interior of the bottom plate 22 is axially protruded with the aforementioned plurality of inserting pieces 221 inserted into the corresponding pressing pieces provided in the terminal groove 13 131 in the fork-shaped notch 132, so that each fork-shaped notch 132 is deformed and expanded, and the external positioning protrusion 133 is snapped into the preset positioning groove 142 of the contact terminal 14, so that each contact terminal 14 is in the Positioning and locking status.

As shown in Figure 1, in order to provide that each tenon 122 can smoothly slide into the buckle groove 232 of the elastic buckle 231, therefore, the front inner wall of the side wall 23 of the positioning cover 2 is opened to the buckle groove 232 of the elastic buckle 231. A guiding groove 233 enables the tenon 122 to be buckled in the buckling groove 232 of the elastic buckle 231 along the guiding groove 233 without any deviation. Wherein, the guide groove 233 is preferably an inclined surface groove that is deep on the outside and shallow on the inside, so that when the tenon 122 is closer to the buckle groove 233, the movable end of the elastic buckle 231 is lifted higher to prevent Insertion connection of complementary connectors.

Furthermore, in order to provide a better elastic expansion and contraction effect of the elastic buckle 231, a U-shaped hollow groove 234 is provided around it. The hollow groove 234 is located at a suitable position, for example, an unlocking groove 235 is provided adjacent to the movable end of the elastic buckle 231, The unlocking groove 235 can be inserted into the jig, and the movable end of the elastic buckle 231 is pried up to release the fastening state between the tenon 122 and the buckle groove 232 , so that the body 1 and the positioning cover 2 can be separated.

When the electrical connector of the utility model is to be assembled, please refer to Fig. 1, Fig. 2a to Fig. 2b and Fig. 3a to Fig. 3b. 21 inside. At this time, the guide groove 233 of the front end inner wall of the positioning cover side wall 23 is inserted into the tenon 122 of the skirt side wall 121 (as shown in Figures 2a and 3a), so that the inner walls of each elastic buckle 231 are adjusted by the tenon 122. At this time, the movable end of the rear end of the elastic buckle 231 forms a tilted state, so that the front opening of the complementary connector (shown in dotted line) cannot be formed because it is against the movable end of the elastic buckle 231. The electrical connection between the plug pin and the contact terminal, that is, the complementary connector is blocked by the movable end of the elastic buckle 231 , so it cannot be connected with the electrical connector of the present invention.

Then, continue to push the positioning cover 2 forward, so that the buckle groove 232 of the elastic buckle 231 is fastened to the tenon 122, and the inner wall of the elastic buckle 231 is flatly attached to the surface of the side wall 121 of the skirt, and the side wall 23 of the positioning cover is Form a straight state (as shown in Figures 2b and 3b); at this time, the fork-shaped notch 132 of each pressing member 131 is inserted and expanded and deformed by the inserting piece 221 inside the positioning cover 2, so that the pressing member 131 The positioning protrusion 133 is snapped into the positioning groove 142 of the contact terminal 14 to form a positioning and locking state (as shown in FIG. 4 ).

After the body 1 and the positioning cover 2 of the electrical connector are assembled, the contact terminals 14 inside the body 1 are in a positioning and locking state. Therefore, the front opening of the complementary connector (shown by the dotted line) can easily pass through the elastic buckle 231 of the positioning cover 2 to form an electrical connection between the complementary connector and the electrical connector of the present invention.

What is disclosed in this utility model is a kind of preferred embodiment, for example, all partial changes or modifications derived from the technical idea of this utility model and easily deduced by those familiar with this technology will not depart from this utility model. scope of patent rights.

Claims (5)

1. the locking device of an electric connector is characterized in that comprising:

One body, the one side has a junction surface, and a plurality of terminal grooves are axially offered at this junction surface, so that supply the ccontaining of contact terminal, the opening portion of this each terminal groove has the setting of pressure part, and this place ahead, junction surface connects a skirt section, the prominent tenon of establishing of at least one sidewall in this skirt section; And

One location lid, its place ahead has a medium altitude chamber, and base plate corresponding each contact terminal in rear is offered slotted eye, and the axial prominent at least one insert-connecting plate of establishing of inner corresponding pressure part; The sidewall of the corresponding tenon of this location lid relatively is provided with at least one elastic fastening plate, and the movable end of each elastic fastening plate rear end is vertically offered a catching groove;

When the socket body is covered in the location, after the tenon jack-up and snapping that each elastic fastening plate and catching groove thereof are oppositely arranged, and the movable end that makes this elastic fastening plate rear end is transformed into straightened condition by perk, make lid inner insert-connecting plate in location to the distortion of exerting pressure of the pressure part of body interior terminal groove, thereby make each contact terminal location and be locked in the terminal groove.

2. the locking device of electric connector as claimed in claim 1 is characterized in that, this location lid sidewall front inner wall to catching groove of elastic fastening plate is offered a guide channel that supplies tenon to move.

3. the locking device of electric connector as claimed in claim 2 is characterized in that, this guide channel is an outer dark interior shallow inclined plane groove.

4. the locking device of electric connector as claimed in claim 1 is characterized in that offering a U-shaped hollow slots around this elastic fastening plate, and this hollow slots appropriate location is provided with a release groove in addition.

5. the locking device of electric connector as claimed in claim 1 is characterized in that this pressure part has a forked recess, and i.e. distortion expansion after this forked recess is inserted by insert-connecting plate is snapped in the default detent of contact terminal its outside positioning convex point.

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