An anti-tilting locking device for a board-to-board connector

Abstract

The present invention provides an anti-tilting locking device for a board-to-board connector, which includes a mating component and a locking component; the mating component includes a mating elastic arm and at least one mating protrusion arranged on a first female side wall of a female housing plastic body; when the female housing is inserted into a receiving cavity of a male head, the mating elastic arm is snap-connected to a first male side wall of the male head plastic body; the mating protrusion is snap-connected to a second male side wall of the male head plastic body; the locking component is arranged between the mating elastic arm and the female housing plastic body and is used to limit the movement of the mating elastic arm. The present invention only arranges the mating component at one end of the male head plastic body and the female housing plastic body, and can simultaneously limit the tilting and rotation after the male head and the female housing are mated. Then, through the locking component, stable mating of the male head and the female housing can be achieved. On the basis of achieving more stable mating, the limiting functions of anti-tilting and anti-rotation can also be simultaneously realized.

Description

Technical Field

[0001] The present invention relates to the field of connectors, and particularly to an anti-tilting locking device for a board-to-board connector. Background Art

[0002] Connector components usually include two mating components. To ensure the connection stability of the two components, bolts or buckles are often used to achieve their locking. Using bolts for locking is rather troublesome, not only requiring more components, but also having a long and complex operation time. In the case of use in a small space, it is impossible to lock by hand or tools. When using the buckle method for locking, usually a plug-in portion extends outside a housing, and a corresponding holding portion is provided on the other mating housing, occupying a large space; especially for board-to-board connectors, in order to avoid tilting and rotation during the mating process, buckle structures are often required to be provided on both sides of the housing. At the same time, in order to ensure the stability of the buckle, a secondary locking structure is also provided, which not only makes the housing larger in volume, but also has a complex structure and higher manufacturing cost. Summary of the Invention

[0003] To solve the above problems, the present invention proposes an anti-tilting locking device for a board-to-board connector.

[0004] The main content of the present invention includes:

[0005] An anti-tilting locking device for a board-to-board connector, the board-to-board connector includes a mating male head and female seat, the male head includes a male head plastic body, and the female seat includes a female seat plastic body;

[0006] The male head plastic body includes a receiving cavity surrounded by two relatively arranged first male side walls and two relatively arranged second male side walls; the female seat plastic body is disposed in the receiving cavity; the female seat plastic body includes a first female side wall and a second female side wall arranged relatively and two third female side walls arranged relatively;

[0007] The locking device includes a mating component and a locking component; the mating component includes a first mating structure and a second mating structure, the first mating structure includes a mating elastic arm provided on the first female side wall of the female seat plastic body; the second mating structure includes at least one mating protrusion protruding from the first female side wall; when the female seat is inserted into the receiving cavity, the mating elastic arm is snap-connected to the first male side wall; the mating protrusion is snap-connected to the second male side wall;

[0008] The locking component is disposed between the mating elastic arm and the female seat plastic body and is used to limit the movement of the mating elastic arm.

[0009] Preferably, the locking component includes a locking base plate, and a limiting protrusion is convexly provided on the locking base plate;

[0010] The mating elastic arm includes an elastic arm body, one end of the elastic arm body is formed at the front end of the first female side wall; a limiting groove is provided at the other end of the elastic arm body, and when the male head and the female seat are in a locked state, the limiting protrusion is arranged in the limiting groove.

[0011] Preferably, the locking component further includes a pair of anti - detachment clamping columns; a pair of anti - detachment side plates are arranged on both sides of the first female side wall, and an anti - detachment protrusion is convexly provided at the rear end of the inner wall surface of the anti - detachment side plate. The anti - detachment clamping column and the anti - detachment protrusion prevent the locking component from detaching from the female seat plastic body.

[0012] Preferably, the locking component further includes a locking guide plate, and the locking guide plate is arranged below the locking base plate through a connecting plate; a locking guide groove is provided on the end surface of the first female side wall, and a guide connecting groove is provided on the outer surface of the first female side wall. The locking guide groove communicates with the guide connecting groove; the locking guide plate and the connecting plate move in the locking guide groove and the guide connecting groove respectively.

[0013] Preferably, the locking component further includes a reinforcing plate and a pair of limiting elastic arms. The reinforcing plate is arranged on the locking guide plate, and the reinforcing plate has a chamfered surface for yielding; the limiting elastic arms are arranged on the locking base plate, and the end of the limiting elastic arm has a guiding chamfer and a mating card slot. In the initial state, the mating card slot abuts against the mating protrusion, and in the locked state, the mating protrusion is snap - connected to the end of the limiting elastic arm.

[0014] Preferably, a guiding groove body is provided at the bottom of the inner wall of the anti - detachment side plate, and the limiting elastic arm moves along the guiding groove body.

[0015] Preferably, the first mating structure further includes a first boss provided on one side of the first male side wall; the mating elastic arm includes an elastic arm body, and elastic arm flanks are convexly provided on both sides of the elastic arm body. When the male head and the female seat are in a locked state, the elastic arm flanks abut against the first boss.

[0016] Preferably, the second mating structure further includes an anti - rotation groove provided on the second male side wall and an anti - skew protrusion convexly provided on the second male side wall. When the male head and the female seat are in a locked state, the mating protrusion is snap - connected to the anti - rotation groove; when the female seat plastic body is inserted into the receiving cavity, the mating elastic arm moves along the area between the anti - skew protrusion and the first male side wall.

[0017] Preferably, the male head plastic body further includes a welding leg plastic body, and the welding leg plastic body is arranged at the rear opening end of the male head plastic body.

[0018] Preferably, the outer wall of the solder leg plastic body is provided with a rear cover buckle and a rear cover guide post, and the inner wall of the male head plastic body is provided with a buckle cross beam adapted to the rear cover buckle and a male head guide groove adapted to the rear cover guide post.

[0019] The beneficial effects of the present invention are as follows: The present invention provides an anti-tilting locking device for a board-to-board connector. By only arranging mating components at one end of the male head plastic body and the female seat plastic body, the tilting and rotation of the male head and the female seat after mating can be restricted simultaneously. Then, through the locking component, the stable mating of the male head and the female seat can be achieved. On the basis of achieving more stable mating, the limiting functions of anti-tilting and anti-rotation can also be realized simultaneously. Description of the Drawings

[0020] Figure 1 is a schematic diagram of the overall structure of the male head;

[0021] Figure 2 is an exploded view of the male head;

[0022] Figure 3 is a partial structural schematic diagram of the male head plastic body at one angle;

[0023] Figure 4 is a partial structural schematic diagram of the male head plastic body at another angle;

[0024] Figure 5 is a schematic diagram of the overall structure of the female seat;

[0025] Figure 6 is a partial structural schematic diagram of the female seat plastic body at one angle;

[0026] Figure 7 is a schematic diagram of the structure of the locking component;

[0027] Figure 8 is a cross-sectional view in the initial insertion state of the locking component;

[0028] Figure 9 is a cross-sectional view in the locked state;

[0029] Reference Signs:

[0030] 1 - male head; 10 - male head plastic body; 100 - buckle cross beam; 101 - male head guide groove; 1-1 - first male side wall; 1-2 - second male side wall; 11 - male head terminal; 12 - solder leg plastic body; 120 - rear cover buckle; 121 - rear cover guide post; 13 - male head iron sheet;

[0031] 2 - female seat; 20 - female seat plastic body; 2-1 - first female side wall; 2-3 - third female side wall; 200 - locking guide groove; 201 - guiding connection groove;

[0032] 3 - mating elastic arm; 30 - elastic arm body; 300 - limiting groove; 301 - elastic arm flank; 31 - anti - detachment side plate; 310 - anti - detachment protrusion

[0033] start; 311 - guiding groove body; 32 - pressing part

[0034] 40 - mating protrusion; 400 - mating flank; 41 - first boss; 42 - anti - rotation groove; 421 - first groove section; 422 - second groove section; 43 - anti - skew rib

[0035] 5 - locking component; 50 - locking bottom plate; 500 - limiting protrusion; 51 - anti - detachment clamping post; 52 - locking guiding plate; 520 - guiding groove body; 53 - connecting plate; 54 - reinforcing plate; 55 - limiting elastic arm; 550 - guiding inclined surface; 551 - mating card slot Specific embodiments

[0036] The following specifically describes the technical solutions protected by the present invention in conjunction with the accompanying drawings.

[0037] The present invention provides an anti - tilt locking device for a board - to - board connector, which can prevent skew and rotation during the mating of the male head and the female seat, and can also maintain a stable locked state after mating. At the same time, the locking device of the present invention is only arranged on one side, reducing the occupied space of the male head and the female seat, simplifying the overall structure and assembly difficulty of the two. In addition, the male head in the present invention also has a solder - foot plastic body for shielding the terminals of the male head, reducing the risk of terminal contamination during use.

[0038] Specifically, the board - to - board connector includes a mating male head 1 and female seat 2. Among them, as Figures 1 to 4 shown, the male head 1 includes a male plastic body 10, male terminals 11, a male iron sheet 13, and a solder - foot plastic body 12 and a male PCB (not shown in the figure) arranged behind the male plastic body 10 for shielding the solder feet of the male terminals 11; the male plastic body 10 includes two relatively arranged first male side walls 1 - 1 and two relatively arranged second male side walls 1 - 2. The two first male side walls 1 - 1 and the two second male side walls 1 - 2 enclose a receiving cavity, and a male plastic core is arranged inside the receiving cavity. The male terminals are installed on the male plastic core. By Figure 2It can be known that the male terminal is L-shaped. When it is installed on the male plastic core, a part of it will be exposed outside the male plastic body 10. To avoid the problem of the male terminal being contaminated during use, a solder pin plastic body 12 is arranged at the rear end of the male plastic body 10. The solder pin plastic body 12 is L-shaped, and a through hole for the male terminal 11 to pass through is provided at one section of it, and a rear cover buckle 120 and a rear cover guide post 121 are convexly provided on the outer side of the other section. Correspondingly, a buckle cross beam 100 adapted to the rear cover buckle 120 and a male guide groove 101 adapted to the rear cover guide post 121 are arranged on the inner wall of the male plastic body.

[0039] As Figure 5 shown, the female socket 2 includes a female socket plastic body 20 and a plurality of female socket terminals arranged in the female socket plastic body 20; specifically, the female socket plastic body 20 includes a first female side wall 2-1 and a second female side wall arranged oppositely and two third female side walls arranged oppositely; when the female socket 2 is mated with the male head 1, the female socket plastic body 20 is inserted into the receiving cavity of the male plastic body 10; the locking device of the present invention can realize the stability of the mating between the female socket 20 and the male head 10. For the convenience of subsequent description, the end where the female socket and the male head face each other is called the front end, and the end where they are far away from each other is called the rear end.

[0040] Please refer to Figure 3 and Figure 6 , the locking device includes a mating component and a locking component; wherein, the mating component includes a first mating structure and a second mating structure. Specifically, the first mating structure includes a mating elastic arm 3 arranged on the first female side wall 2-1 of the female socket plastic body 20; the mating elastic arm 3 is formed at the front end of the first female side wall 2-1 and extends rearwardly in a suspended manner; when the female socket plastic body 20 is inserted into the receiving cavity, the end of the mating elastic arm 3 connected to the first female side wall 2-1 first enters the receiving cavity. As the female socket plastic body enters the receiving cavity, the mating elastic arm 3 is subjected to the extrusion force of the first male side wall 1-1, and after the mating is in place, the mating elastic arm 3 can realize the snap connection with the male plastic body 10.

[0041] As Figure 3As shown, two first bosses 41 are convexly provided on the upper part of the first male side wall 1-1 of the male plastic body 10. More specifically, the two first bosses 41 are arranged at the front end of the first male side wall 1-1, and the interval between them is for the mating elastic arm 3 to pass through and enter the receiving cavity. Correspondingly, the mating elastic arm 3 includes an elastic arm body 30, and elastic arm flanks 301 protrude outward from both sides of the elastic arm body 30. When the female base plastic body 20 is mated in the receiving cavity, on the one hand, the elastic arm flanks 301 are snap-connected with the first bosses 41 to prevent the female base plastic body 20 from separating from the male plastic body. On the other hand, the mating elastic arm 3 generates a reaction force on the first male side wall 1-1 due to being squeezed by the first male side wall 1-1, so that the mating of the female base plastic body 20 and the male plastic body 10 is more stable.

[0042] Meanwhile, in order to further ensure the stability of mating, the female base plastic body 20 and the male plastic body 10 also prevent rotation and inclination after mating through the second mating structure. Please continue to refer to Figure 3 and Figure 5 The second mating structure includes a mating protrusion 40 convexly provided on the first female side wall 2-1. Correspondingly, an anti-rotation groove 42 is formed on the second male side wall 1-2 of the male plastic body 10. When the female base plastic body 20 is mated with the male plastic body 10, the mating protrusion 40 is arranged in the anti-rotation groove 42. Specifically, mating flanks 400 protrude outward from both sides of the first female side wall 2-1, and the mating protrusion 40 is formed on the mating flanks 400. The anti-rotation groove 42 is L-shaped and includes a first groove section 421 extending in a first direction and a second groove section 422 extending in a second direction. One end of the first groove section 421 close to the second groove section 422 has a groove inclined surface 4210, wherein the first direction and the second direction are perpendicular, and the first direction is the width direction of the second male side wall 2-1.

[0043] More specifically, when the female base plastic body 20 is mated in the male plastic body 10, the mating protrusion 40 is arranged in the second groove section 422, and part of the mating flanks 400 is arranged in the first groove section 421, thereby realizing another snap connection between the female base plastic body 20 and the male plastic body 10.

[0044] Meanwhile, in order to prevent inclination and further ensure the stability of mating, the second mating structure further includes an anti-inclination rib 43 convexly provided on the second male side wall 1-2. The anti-inclination rib 43 extends in the first direction, forms a gap for the mating elastic arm 3 to pass through with the first male side wall 1-1, and can keep the mating elastic arm 3 in this gap without inclination.

[0045] To achieve the locking state between the female housing plastic body 20 and the male head plastic body 10, a locking component 5 is arranged between the mating elastic arm 3 and the first female side wall 2-1. After the female housing plastic body 20 is inserted into the receiving cavity, the locking component 5 is placed between the mating elastic arm 3 and the first female side wall 2-1, so that the mating elastic arm 3 will not be separated from the receiving cavity due to external force extrusion.

[0046] Please refer to Figures 5 to 8 , the locking component 5 includes a locking bottom plate 50 and a locking guide plate 52. The locking guide plate 52 is arranged in the same direction as the first female side wall 2-1, and the locking bottom plate 50 is arranged in a direction perpendicular to it. The locking bottom plate 50 and the locking guide plate 52 are connected by a connecting plate 53. When viewed from the rear of the female housing plastic body 20, the locking bottom plate 50, the locking guide plate 52 and the connecting plate 53 are in an "I" shape. At the same time, in order to better realize the configuration guidance of the locking component 5, a locking guide groove 200 is opened at the end face of the first female side wall 2-1 of the female housing plastic body 20, and a guide connection groove 201 is opened on the outer wall surface of the first female side wall 2-1. The guide connection groove 201 is communicated with the locking guide groove 200. The locking guide plate 52 moves in the guide connection groove 201, and the connecting plate 53 moves along the guide connection groove 201.

[0047] A limiting protrusion 500 protrudes from the locking bottom plate 50, and a pair of anti-detachment clamping columns 51 are also arranged on both sides of the limiting protrusion 500. The anti-detachment clamping columns 51 extend forward from the locking bottom plate 50, and a clamping head is formed at the end. When the locking component 5 is arranged below the mating elastic arm 3, the limiting protrusion 500 is arranged in the limiting groove 300 to prevent the mating elastic arm 3 from being further squeezed, and the anti-detachment clamping columns 51 can be buckled with the female housing plastic body 20 without falling off.

[0048] Specifically, a pair of anti-detachment side plates 31 are symmetrically arranged on both sides of the first female side wall. The anti-detachment side plates 31 are L-shaped. Their vertical plates are arranged on the first female side wall 2-1, and their horizontal plates extend towards each other from the upper ends of the vertical plates. There is a gap between the two horizontal plates for applying force to the mating elastic arm 3. For better operation, a pressing part 32 protrudes from the rear end of the mating elastic arm 3. The pressing part 32 extends from between the two horizontal plates to the outside. When wanting to separate the male head and the female housing, after removing the restriction of the locking component 5 on the mating elastic arm 3, by applying force on the pressing part 32, the elastic arm flank 301 can be separated from the first boss 41, so that the female housing and the male head can be easily separated.

[0049] More specifically, an anti - detachment protrusion 310 is provided at the rear end of the inner wall of the vertical plate of the anti - detachment side plate 31. The head of the anti - detachment clamping post 51 is restricted by the anti - detachment protrusion 310 and cannot be separated from the female - seat plastic body 20. Further, a pair of limiting elastic arms 55 are also provided on the locking base plate 50. The limiting elastic arms 55 also extend from the right - rear to the front of the locking base plate 50. The end of the limiting elastic arm 55 has a guiding inclined surface 550 and a mating card slot 551. At the same time, a guiding groove body 311 is opened at the bottom of the inner wall of the vertical plate of the anti - detachment side plate 31 for the limiting elastic arm 55 to pass through. When the locking assembly 5 is configured, the anti - detachment clamping post 51 is restricted by the anti - detachment protrusion 310. At the same time, the mating card slot 551 is restricted by the mating protrusion 40 and will not be inserted excessively. Due to the setting of the guiding inclined surface 550 and the first groove section 4210, as the female - seat plastic body 20 can be easily further inserted into the receiving cavity, the mating protrusion 40 is restricted within the second groove section 422.

[0050] In addition, the horizontal plate of the anti - detachment side plate 31 can also prevent the mating elastic arm 3 from being damaged due to being overly opened by other external forces to a certain extent. When the mating elastic arm 3 is overly opened (that is, when the mating elastic arm 3 moves excessively away from the direction of the first female side wall 2 - 1), the horizontal plate of the anti - detachment side plate 31 can play a limiting role on both sides of the elastic arm body 30.

[0051] After the female - seat plastic body 20 is inserted into the receiving cavity, the mating protrusion 40 is configured within the anti - rotation groove 42. At this time, the locking assembly 5 is configured. The locking assembly 5 is inserted from the rear end of the female - seat plastic body 20, so that the locking guiding plate 52 is inserted into the locking guiding groove 200, the connecting plate 52 is configured within the guiding connecting groove 201, the anti - detachment clamping post 51 is squeezed, and the limiting elastic arm moves forward along the guiding groove body 311 until the limiting protrusion 500 is configured within the limiting groove 300. The mating card slot 551 is restricted by the mating protrusion 40. At the same time, the head of the anti - detachment clamping post 51 is restricted by the anti - detachment protrusion 310. At this time, the mating elastic arm 3 is continuously inserted towards the male - head direction. The guiding inclined surface 550 is squeezed by the second male side wall 1 - 2, so that the mating card slot 551 avoids the restriction of the mating protrusion 40, and the locking assembly 5 can continue to move a certain distance towards the male - head. Finally, the end of the limiting elastic arm 55 is also configured within the second groove section 422, and the mating protrusion 40 restricts the backward movement of the locking assembly 5.

[0052] In addition, the locking base plate 50 and the locking guiding plate 52 are also connected by a plurality of reinforcing plates 54, which improves the strength of the locking base plate 50. The reinforcing plates 54 are arranged on the locking guiding plate 50, and the reinforcing plates 54 have a yielding inclined surface.

[0053] The above are only embodiments of the present invention, and do not thus limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall similarly be included within the patent protection scope of the present invention.

Claims

1. An anti-tilting locking device for a board-to-board connector, the board-to-board connector including a mating male head and female socket, the male head including a male head plastic body, and the female socket including a female socket plastic body; characterized in that, The male head plastic body includes a receiving cavity surrounded by two relatively arranged first male side walls and two relatively arranged second male side walls; the female socket plastic body is disposed in the receiving cavity; the female socket plastic body includes a first female side wall and a second female side wall arranged opposite to each other and two third female side walls arranged opposite to each other; The locking device includes a mating component and a locking component; the mating component includes a first mating structure and a second mating structure, the first mating structure including a mating elastic arm provided on the first female side wall of the female socket plastic body; the second mating structure includes at least one mating protrusion protruding from the first female side wall; when the female socket is inserted into the receiving cavity, the mating elastic arm is snap-connected to the first male side wall; the mating protrusion is snap-connected to the second male side wall; The locking component is disposed between the mating elastic arm and the female socket plastic body for restricting the movement of the mating elastic arm; The locking component includes a locking bottom plate, on which a limiting protrusion protrudes; The mating elastic arm includes an elastic arm body, one end of the elastic arm body being formed at the front end of the first female side wall; a limiting groove is opened at the other end of the elastic arm body, and when the male head and the female socket are in a locked state, the limiting protrusion is disposed in the limiting groove; The locking component further includes a pair of anti-disengagement posts; a pair of inverted L-shaped anti-disengagement side plates are symmetrically arranged on both sides of the first female side wall, and an anti-disengagement protrusion protrudes from the inner wall surface at the rear end of the anti-disengagement side plate, and the locking component is prevented from disengaging from the female socket plastic body through the engaging head of the anti-disengagement post and the anti-disengagement protrusion; The locking component further includes a locking guide plate, the locking guide plate being arranged below the locking bottom plate through a connecting plate; a locking guide groove is opened at the end surface of the first female side wall, and a guide connection groove is opened on the outer surface of the first female side wall, and the locking guide groove communicates with the guide connection groove; the locking guide plate and the connecting plate move in the locking guide groove and the guide connection groove respectively; The locking component further includes a reinforcing plate and a pair of limiting elastic arms, the reinforcing plate being arranged on the locking guide plate, the reinforcing plate having a relief inclined surface; the limiting elastic arms are arranged on the locking bottom plate, and the end of the limiting elastic arm has a guide inclined surface and a mating card slot; in the initial state, the mating card slot abuts against the mating protrusion, and in the locked state, the mating protrusion is snap-connected to the end of the limiting elastic arm.

2. The anti-tilting locking device for a board-to-board connector according to claim 1, characterized in that, A guide groove body is opened at the bottom of the inner wall of the anti-disengagement side plate, and the limiting elastic arm moves along the guide groove body.

3. The anti-tilting locking device for a board-to-board connector according to claim 1, characterized in that, The first mating structure further includes a first boss provided on one side of the first male side wall; elastic arm flanks protrude from both sides of the elastic arm body, and when the male head and the female socket are in a locked state, the elastic arm flanks abut against the first boss.

4. A tilt-proof locking device for a board-to-board connector according to claim 1, characterized in that, The second matching structure further includes an anti-rotation groove provided on the second male side wall and an anti-skew convex strip provided on the second male side wall; matching side wings are extended outwardly on both sides of the first female side wall, the matching protrusion is provided on the side surface of the matching side wings, and the anti-rotation groove includes a groove section 1 extending along the first direction and a groove section 2 extending along the second direction; When the male head and the female seat are in a locked state, the matching protrusion is snap-connected with the second groove section, and the matching wing portion is arranged in the first groove section; when the plastic body of the female seat is inserted into the accommodating cavity, the matching elastic arm moves along the area between the anti-slant protrusion and the first male side wall.

5. A tilting prevention locking device for a board-to-board connector according to any one of claims 1 to 4, characterized in that, The male plastic body also includes a soldering foot plastic body, and the soldering foot plastic body is arranged at the rear opening end of the male plastic body.

6. The anti-tilting locking device for a board-to-board connector according to claim 5, wherein, The inner wall of the welding foot plastic body is provided with a rear cover undercut and a rear cover guide column, and the inner wall of the male head plastic body is provided with an undercut beam matched with the rear cover undercut and a male head guide groove matched with the rear cover guide column.

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