Abnormal-sound-free secondary locking connector

Abstract

The utility model provides a secondary locking connector without abnormal sound, which comprises a male end connector and a positioning device, the positioning device comprises an assembling sliding block, a locking rod and a convex rib, the assembling sliding block corresponds to the interior of a buckling cavity and is in sliding connection with the rear end of a male end shell, the rear end of the locking rod is fixed at the front end of the assembling sliding block, and the convex rib is fixed at the rear end of the assembling sliding block. A locking boss protruding downwards is arranged at the front end of the locking rod, the rear end of the locking boss abuts against the front end of the buckle assembly, a limiting groove is formed in the front end of the assembling sliding block, the rear end of the locking rod corresponds to the lower side of the limiting groove, a third limiting boss is arranged at the rear end of the buckle assembly, and the third limiting boss is correspondingly arranged in the limiting groove. A gap exists between the upper end face of the locking rod and the lower end face of the third limiting boss, the convex rib is fixed to the upper end face of the locking rod and corresponds to the gap, and the assembly sliding block has the advantages that abnormal sound cannot be generated when the assembly sliding block slides, light interference is relieved after secondary locking, and interference force cannot be caused to the secondary locking state.

Description

Technical Field

[0001] The utility model relates to the field of high-voltage connectors, in particular to a secondary locking connector without abnormal noise. Background Art

[0002] In recent years, with the rapid rise of the domestic new energy electric vehicle industry, new energy electric vehicle high-voltage connectors have been widely used in electric vehicles to transmit power and signals. As a commonly used and large number of devices in new energy vehicles, the reliability of high-voltage connectors is crucial.

[0003] Existing high-voltage connectors are usually equipped with a primary lock and may be equipped with a secondary locking lever to ensure the locking function. After the male connector and the female connector are plugged in, the snap-on boss on the female connector enters the snap-on hole of the male connector for a primary lock, and then the male and female connectors are locked for a secondary time through the secondary locking lever. However, before the secondary locking, the sliding groove of the locking lever forms a clearance fit with the plastic body snap position of the male connector, which easily causes sliding noise. Therefore, it is necessary to produce a secondary locking connector without noise to solve the above problem. Utility Model Content

[0004] The utility model aims to provide a secondary locking connector without abnormal sound to solve the problems mentioned in the background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A secondary locking connector without abnormal sound comprises a male connector and a positioning device, wherein the male connector comprises a male housing, a connecting plug assembly and a buckle assembly, a mounting cavity is arranged at the lower side of the male housing, the connecting plug assembly is fixed in the mounting cavity, a buckle cavity connected to the mounting cavity is arranged at the upper side of the male housing, the buckle assembly corresponds to the lower side of the buckle cavity, the rear end of the buckle assembly is fixed on the male housing, a buckle hole is arranged at the front end, the positioning device comprises an assembly slider, a locking rod and a convex rib, the assembly slider corresponds to the buckle cavity The assembly slider is slidably connected to the rear end of the male end shell, the rear end of the locking rod is fixed to the front end of the assembly slider, the front end of the locking rod is provided with a locking boss protruding downward, the rear end of the locking boss contacts the front end of the buckle assembly, the front end of the assembly slider is provided with a limiting groove, the rear end of the locking rod corresponds to the lower side of the limiting groove, the rear end of the buckle assembly is provided with a third limiting boss, the third limiting boss corresponds to the limiting groove, there is a gap between the upper end surface of the locking rod and the lower end surface of the third limiting boss, the convex rib is fixed to the upper end surface of the locking rod and corresponds to the gap.

[0007] Further description of the utility model: the male end shell is also provided with a first limiting boss, the first limiting boss corresponds to the upper side of the buckle cavity, and the middle upper end of the locking rod is provided with a second limiting boss, and the second limiting boss corresponds to the bottom of the first limiting boss.

[0008] Further description of the utility model: both left and right sides of the male end housing are provided with slide grooves arranged in the horizontal direction, and both left and right sides of the assembly slider are provided with movable bosses, and the movable bosses are slidably connected with the slide grooves.

[0009] Further description of the utility model: a protrusion is provided above the third limiting boss, and the protrusion matches the upper side profile of the limiting groove.

[0010] Further description of the utility model: a backstop boss is provided on the upper side of the locking rod, the backstop boss corresponds to the front side of the third limiting boss, a guide slope is provided at the front end of the backstop boss, and a convex rib corresponds to between the backstop boss and the third limiting boss.

[0011] Further description of the utility model: A handle portion protruding upward is provided at the rear end of the assembly slide block.

[0012] The beneficial effect of the utility model is that after the male connector and the female connector are plugged into each other, the snap-on boss on the female connector enters the snap-on hole of the male connector to perform a primary locking. The primary locking is not strong enough, and the male connector and the female connector are easily separated. Therefore, the connector is locked for a secondary time by the positioning device, and the assembly slider is pushed to slide forward. The locking boss at the front end of the locking rod moves along the inclined surface on the snap-on boss to the front end of the buckle assembly to perform a secondary locking. The advantage of this design is that before pushing the assembly slider, the upper end of the rib touches the third limit boss to form a slight interference, and no abnormal sound is generated when the assembly slider slides. After the secondary locking, the rib is separated from the third limit boss and is located in front of the limit boss. The slight interference is released and no interference force is caused to the secondary locking state. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is the overall structure diagram of the utility model;

[0014] Figure 2 It is an exploded structural diagram (partial cutaway view) of the utility model;

[0015] Figure 3 It is the overall structure diagram of the utility model (partial cross-section);

[0016] Figure 4 It is a structural diagram of the positioning device in the utility model;

[0017] Figure 5 It is a right side sectional view of the utility model (state before secondary locking);

[0018] Figure 6 It is a right side cross-sectional view of the utility model (in a state after secondary locking);

[0019] Description of reference numerals:

[0020] 01. Male connector; 11. Male housing; 111. Mounting cavity; 112. Snap-on cavity; 113. First limiting boss; 114. Slide groove; 12. Connecting plug assembly; 13. Snap-on assembly; 131. Snap-on hole; 132. Third limiting boss; 02. Positioning device; 21. Assembly slider; 211. Movable boss; 212. Limiting groove; 213. Hand-held part; 22. Locking rod; 221. Locking boss; 222. Second limiting boss; 223. Stop boss; 23. Raised rib. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings:

[0022] like Figures 1 to 6 As shown, a secondary locking connector without abnormal sound includes a male connector 01 and a positioning device 02. The male connector 01 includes a male housing 11, a connecting plug assembly 12 and a buckle assembly 13. The lower side of the male housing 11 is provided with a mounting cavity 111, and the connecting plug assembly 12 is fixed in the mounting cavity 111. The upper side of the male housing 11 is provided with a buckle cavity 112 connected to the mounting cavity 111. The buckle assembly 13 corresponds to the lower side of the buckle cavity 112. The rear end of the buckle assembly 13 is fixed on the male housing 11, and the front end is provided with a buckle hole 131. The positioning device 02 includes an assembly slider 21, a locking rod 22 and a convex rib 23. The assembly slider 21 corresponds to the buckle cavity In the body 112, the assembly slider 21 is slidably connected with the rear end of the male end shell 11, the rear end of the locking rod 22 is fixed to the front end of the assembly slider 21, the front end of the locking rod 22 is provided with a locking boss 221 protruding downward, the rear end of the locking boss 221 contacts the front end of the buckle assembly 13, the front end of the assembly slider 21 is provided with a limiting groove 212, the rear end of the locking rod 22 corresponds to the lower side of the limiting groove 212, the rear end of the buckle assembly 13 is provided with a third limiting boss 132, the third limiting boss 132 corresponds to the limiting groove 212, there is a gap between the upper end surface of the locking rod 22 and the lower end surface of the third limiting boss 132, the rib 23 is fixed to the upper end surface of the locking rod 22 and corresponds to the gap.

[0023] The female connector includes a female housing and a connecting terminal assembly. When the male connector 01 is connected to the female connector, the connecting plug assembly 12 and the connecting terminal assembly are plugged into each other, and the snap-on boss on the female connector enters the snap-on hole 131 of the male connector 01 to perform a primary locking. The primary locking is not strong enough, and the male connector 01 and the female connector are easily separated. Therefore, the connector is secondary locked by the positioning device 02, and the assembly slider 21 is pushed to slide forward. The locking boss 221 at the front end of the locking rod 22 moves along the inclined surface on the snap-on boss to the front end of the snap assembly 13 to perform a secondary locking. When the assembly slider 21 is pushed forward, the third limiting boss 132 limits the maximum forward position of the assembly slider 21, and in the secondary locking state, the rear side of the locking boss 221 is blocked by the snap assembly 13, thereby fixing the position of the positioning device 02.

[0024] Before pushing the assembly slider 21, the upper end of the rib 23 contacts the third limit boss 132 to form a slight interference, and no abnormal noise is generated when the assembly slider 21 slides. After the secondary locking, the rib 23 is separated from the third limit boss 132 and is located in front of the limit boss. The slight interference is released and no interference force is caused to the secondary locking state.

[0025] The male end housing 11 is also provided with a first limiting boss 113 , which corresponds to the upper side of the buckle cavity 112 . The middle upper end of the locking rod 22 is provided with a second limiting boss 222 , which corresponds to the lower side of the first limiting boss 113 .

[0026] In the secondary locking state, when the front end of the snap assembly 13 and the snap-connecting boss are displaced upward relative to each other, the locking rod 22 is pushed upward, so that the second limiting boss 222 contacts the first limiting boss 113. Under the action of the first limiting boss 113, the locking rod 22 presses the front end of the snap assembly 13 downward, so that the snap assembly 13 and the snap-connecting boss are firmly connected, which can further improve the connection stability between the male connector 01 and the female connector to meet the strict requirements of the new energy electric vehicle industry.

[0027] The left and right sides of the male end housing 11 are both provided with sliding grooves 114 arranged in the horizontal direction, and the left and right sides of the assembly slider 21 are both provided with movable bosses 211, and the movable bosses 211 are slidably connected with the sliding grooves 114.

[0028] By pushing the assembly slide block 21 forward, the movable boss 211 slides forward in the slide groove 114, thereby driving the locking rod 22 to move forward to perform secondary locking.

[0029] A protrusion is provided above the third limiting boss 132 , and the protrusion matches the upper profile of the limiting groove 212 , so as to prevent the assembly slider 21 from shaking left and right.

[0030] A stop boss 223 is provided on the upper side of the locking rod 22 , and the stop boss 223 corresponds to the front side of the third limiting boss 132 . A guiding slope is provided at the front end of the stop boss 223 , and the rib 23 corresponds to between the stop boss 223 and the third limiting boss 132 .

[0031] Through the stop boss 223, the positioning device 02 can be installed on the male connector 01 without falling off even before the male connector 01 and the female connector are plugged in, which is convenient for use during plugging in. When the positioning device 02 is installed on the male connector 01, the locking rod 22 is first passed under the third limiting boss 132. After the inclined surface at the front end of the stop boss 223 contacts the lower end of the third limiting boss 132, the locking rod 22 is bent downward. After the stop boss 223 reaches the front end of the third limiting boss 132, the locking rod 22 returns to its original state. At this time, the third limiting boss 132 corresponds to the limiting groove 212. The stop boss 223 can limit the maximum displacement of the assembly slider 21 to move backward, so that the positioning device 02 will not fall off the male connector 01.

[0032] The rear end of the assembly slider 21 is provided with a handle 213 protruding upwards, and the handle 213 can facilitate an operator to push the assembly slider 21 forward or pull the assembly slider 21 backward.

[0033] The above does not limit the technical scope of the present invention. Any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A secondary locking connector without abnormal sound, Features: The invention comprises a male connector and a positioning device, wherein the male connector comprises a male housing, a connecting plug assembly and a buckle assembly, a mounting cavity is arranged at the lower side of the male housing, the connecting plug assembly is fixed in the mounting cavity, a buckle cavity connected to the mounting cavity is arranged at the upper side of the male housing, the buckle assembly corresponds to the lower side of the buckle cavity, the rear end of the buckle assembly is fixed on the male housing, a buckle hole is arranged at the front end, the positioning device comprises an assembly slider, a locking rod and a convex rib, the assembly slider corresponds to the buckle cavity, the assembly slider and the male The rear end of the shell is slidably connected, and the rear end of the locking rod is fixed to the front end of the assembly slider, the front end of the locking rod is provided with a locking boss protruding downward, and the rear end of the locking boss contacts the front end of the buckle assembly, and the front end of the assembly slider is provided with a limiting groove, and the rear end of the locking rod corresponds to the lower side of the limiting groove, and the rear end of the buckle assembly is provided with a third limiting boss, and the third limiting boss corresponds to the limiting groove, and there is a gap between the upper end surface of the locking rod and the lower end surface of the third limiting boss, and the convex rib is fixed to the upper end surface of the locking rod and corresponds to the gap.

2. A secondary locking connector without abnormal sound according to claim 1, Features: The male end housing is also provided with a first limiting boss, which corresponds to the upper side of the buckle cavity. The middle upper end of the locking rod is provided with a second limiting boss, which corresponds to the lower side of the first limiting boss.

3. A secondary locking connector without abnormal sound according to claim 1, Features: The left and right sides of the male end housing are both provided with sliding grooves arranged in the horizontal direction, and the left and right sides of the assembly sliding block are both provided with movable bosses, and the movable bosses are slidably connected with the sliding grooves.

4. A secondary locking connector without abnormal sound according to claim 1, Features: A protrusion is provided above the third limiting boss, and the protrusion matches the upper side profile of the limiting groove.

5. A secondary locking connector without abnormal sound according to claim 1, Features: A stop boss is provided on the upper side of the locking rod, the stop boss corresponds to the front side of the third limiting boss, a guiding slope is provided at the front end of the stop boss, and the rib corresponds to between the stop boss and the third limiting boss.

6. A secondary locking connector without abnormal sound according to claim 1, Features: A hand-held portion protruding upward is provided at the rear end of the assembling slide block.

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