JP6150053B2 - connector - Google Patents

Description

  The present invention relates to a connector including a plug and a receptacle that are fitted to each other, such as an in-vehicle multimedia connector.

  An in-vehicle connector such as an in-vehicle multimedia connector is used as an interface for connecting an in-vehicle navigation system and the like to a Blu-ray / DVD player, a rear seat monitor, or a portable digital terminal such as a smartphone. Is required to have high robustness and vibration / impact resistance.

  Therefore, such a connector includes a receptacle having a plug fitting portion opened on the front surface into which the plug is fitted, and a rectangular hole-like engagement hole or convex engagement on the inner peripheral surface portion of the plug fitting portion of the receptacle. A joint projection is provided, and the engagement claw that is integrally provided on the outer surface of the plug is engaged with the engagement hole or engagement projection to firmly connect the plug and the receptacle. (See, for example, Patent Document 1).

  In addition, such a receptacle is provided with a synthetic resin mold case and a shield cover that covers the outer surface of the mold case to ensure high shielding performance.

JP 2005-123098 A

  However, in the conventional technology as described above, when the plug is made of synthetic resin and the engaging claw is also made of synthetic resin, when the plug and the receptacle are repeatedly attached and detached, the engaging surface of the engaging claw becomes a metal material. Since the engaging claws are worn when sliding relative to the edge portions of each other, the engagement strength may be reduced. It was necessary to avoid the shield cover and to provide it in a synthetic resin mold case.

  On the other hand, the fitting strength between the receptacle and the plug depends on the engagement strength between the synthetic resin engaging claw and the engaging hole or engaging protrusion formed in the mold case. In the engagement between resin parts, the strength is low.

  In addition, in order to ensure high engagement strength by engaging the synthetic resin parts, in the case of an engagement hole, it is necessary to ensure a sufficient thickness on the front side in the peripheral fitting direction of the engagement hole of the mold case. The position of the engagement hole has to be set at a certain distance from the front end of the receptacle, and there is a problem that the degree of freedom in design is reduced and the miniaturization of the connector is hindered.

  Therefore, in view of such a conventional problem, the present invention has been made for the purpose of providing a connector that can prevent wear of the engaging claws and can ensure high fitting strength.

In order to solve the above-mentioned conventional problems and achieve the intended object, the feature of the invention according to claim 1 is provided with a receptacle having a plug fitting portion opened on a front surface into which a plug is inserted, The engagement hole formed in the peripheral wall portion of the receptacle engages with an engaging claw made of a synthetic resin projecting from the outer surface of the plug, so that the plug and the receptacle are connected to each other and separated from each other. In the connector in which the movement in the direction to be regulated is restricted, the receptacle is provided with a mold case made of an insulating synthetic resin in which the plug fitting portion is opened on the front surface, and a conductive metal that covers an outer surface of the mold case. A shield cover made of a material, and the engagement hole portion includes a resin portion engagement hole formed in the mold case and a metal portion engagement hole formed in the shield cover. It has a two-layer structure, and is provided with an engagement strength reinforcing portion on the front side portion in the peripheral edge fitting direction of the metal portion engaging hole, and the mold case has an opening edge on the front side in the resin portion engaging hole fitting direction on the outer surface. A supported convex portion that fits into the inner edge of the metal portion engaging hole on the front side in the fitting direction is integrally provided on the portion, and the supported convex portion comes into contact with the engaging strength reinforcing portion to thereby engage the resin portion. The connector is configured such that the joint hole is reinforced and the engaging claw is engaged with the reinforced resin portion engaging hole.

  According to a second aspect of the present invention, in addition to the configuration of the first aspect, the receptacle is formed in a rectangular tube shape having an open front surface, and the inside of the rectangular tube shape serves as a plug fitting portion, and an upper peripheral wall portion thereof. The engagement hole is formed in at least one of the left and right peripheral walls and / or the lower peripheral wall.

According to a third aspect of the present invention, in addition to the configuration of the first or second aspect, the mold case is fitted into the inner edge of the metal part engagement hole in the resin part engagement hole opening edge of the outer surface. The frame-shaped protective frame portion is integrally protruded, and one side of the protective frame portion forms the protective convex portion.

As described above, the connector according to the present invention includes a receptacle having a plug fitting portion that opens to a front surface into which a plug is inserted, and an outer surface portion of the plug is formed in an engagement hole formed in a peripheral wall portion of the receptacle. In the connector in which the plug and the receptacle are connected by engaging the engaging claw made of synthetic resin projecting to the receptacle, and the movement in the direction of separating from each other is restricted, the receptacle is connected to the receptacle, The plug fitting portion includes a mold case made of an insulating synthetic resin having an opening on the front surface, and a shield cover made of a conductive metal material that covers an outer surface of the mold case. A two-layer structure comprising a resin part engagement hole formed in the mold case and a metal part engagement hole formed in the shield cover. Since the side portion is provided with an engaging strength reinforcing portion, and the engaging claw is engaged with the resin portion engaging hole reinforced by the engaging strength reinforcing portion, the plug and the receptacle are repeatedly attached and detached. Even if the engagement claw does not slide with the edge portion of the metal material, the fitting strength can be prevented from being lowered, and the engagement hole is strengthened with the metal material, so the front end of the receptacle Further, the distance to the engagement hole can be shortened, the degree of freedom in design increases, and the connector can be downsized.

  In the present invention, the receptacle is formed in a rectangular tube shape with an open front surface, and the inside of the rectangular tube shape is a plug fitting portion, and at least one of the upper peripheral wall portion, the left and right peripheral wall portions, and / or the lower peripheral wall portion. Since the engagement hole is formed in the first, the engagement hole is easily formed in a two-layer structure.

  Furthermore, in the present invention, the mold case is fitted into the inner edge on the front side in the fitting direction of the metal part engaging hole on the front side edge part in the fitting direction of the resin part engaging hole on the outer side surface. A protective convex portion covering the inner edge of the engagement hole is integrally projected, and the engagement claw is engaged with the engagement strength reinforcing portion via the protective convex portion, or the mold case A frame-shaped protective frame part fitted into the inner edge of the metal part engaging hole is integrally provided on the outer edge of the opening part of the resin part engaging hole, and one side of the protective frame part is the protective projection. By forming the portion, contact between the engaging claw and the inner edge of the metal portion engaging hole is prevented, and the inner edge of the metal portion engaging hole is applied to the protective convex portion, and the engagement strength with respect to the engaging claw is improved. .

It is a disassembled perspective view which shows an example of the connector which concerns on this invention. It is a longitudinal cross-sectional view which shows the state which fitted the plug and receptacle of the connector same as the above. It is a disassembled perspective view which shows the receptacle in FIG. (A) The top view same as the above, (b) is the same front view, (c) is the same longitudinal cross-sectional view. (A) is the elements on larger scale which show the engagement hole part in FIG. 4, (b) is the elements on larger scale of the same. (A) is a partial expanded sectional view which shows the aspect of another example of an engagement hole part same as the above, (b) is the partial enlarged plan view. (A) is a partial expanded sectional view which shows the aspect of another example of the engagement hole part same as the above, (b) is the same partial enlarged plan view.

  Next, an embodiment of the connector according to the present invention will be described based on the embodiment shown in FIGS. In this embodiment, an in-vehicle multimedia connector will be described as an example, and reference numeral 1 in the drawing denotes a connector.

  As shown in FIG. 1, the connector 1 includes a receptacle 3 having a plug fitting portion 2 opened on the front surface. The plug 4 is fitted into the plug fitting portion 2 to connect the plug 4 and the receptacle 3. As a result, the conductive metal contacts 5, 5... And the contacts 6, 6... Held by the plug 4 and the receptacle 3 respectively come into contact with each other, and the plug 4 and the receptacle 3 are electrically connected. It has come to be.

  Here, the front, rear, left and right are described with reference to the front side of the plug 3 in the mating direction of the receptacle 3 and the lower side of the board mounting surface in the thickness direction of the receptacle 3.

  As shown in FIGS. 1 and 2, the plug 4 includes an external housing 7 made of an insulating synthetic resin, and the external housing 7 is fitted into the plug fitting portion 2 of the receptacle 3, so that the external housing The plug-side connecting portion 8 held in the plug 7 is fitted to a later-described receptacle-side connecting portion 46 projecting from the inner surface of the rear end of the plug fitting portion 2, and the contacts 5, 5. The three contacts 6, 6... Are in contact with each other.

  The outer housing 7 is integrally formed in a rectangular parallelepiped shape with an insulating synthetic resin, and includes an engaging claw portion 10 with an engaging claw 9 integrally projecting on an outer surface portion thereof, that is, an upper surface portion of the outer housing 7. ing.

  The engaging claw portion 10 includes a cantilever spring-like elastic portion 11 whose back end (rear end) in the fitting direction is integrally supported by the upper surface portion of the outer housing 7, and a front end in the fitting direction of the elastic portion 11. 2 includes a push button-like operation portion 12 formed integrally with the portion, and an engagement claw 9 protruding integrally on the upper surface of the elastic portion 11, and the engagement claw 9 will be described later as shown in FIG. The plug 3 engages with the engagement hole 20 formed in the peripheral wall portion of the receptacle 3, so that the movement of the plug 4 in the withdrawal direction with respect to the receptacle 3 is restricted, that is, a so-called full lock state.

  On the other hand, the engaging claw 9 can be detached from the engaging hole 20 by pressing the operating portion 12 and elastically deforming the elastic portion 11, and the plug 4 can be taken out from the receptacle 3, that is, Full lock status can be released.

  The engaging claw 9 includes a front engaging surface 9 a that is cut vertically upward from the surface of the elastic portion 11, and an inclined surface 9 b that is disposed rearward, and the plug 4 is inserted into the plug fitting portion 2. At this time, the inclined surface 9b is pressed against the inner surface of the plug fitting portion 2 to push down the elastic portion 11, and further pushes down to reach the desired fitting position. 20, the engagement surface 9 a engages with the front inner edge of the engagement hole 20.

  As shown in FIGS. 3 and 4, the receptacle 3 includes a receptacle body 21 having a plug fitting portion 2 opened on the front surface, and a plurality of contacts 6, 6... Held by the receptacle body 21. Yes.

  As shown in FIG. 3, the receptacle body 21 includes a mold case 22 made of an insulating synthetic resin and a shield cover 23 made of a conductive metal material. The outer surface of the mold case 22, that is, the upper surface, both side surfaces, and By incorporating both 22 and 23 so that the shield cover 23 covers the rear surface, it is formed in a hollow box shape opened to the front surface.

  The receptacle body 21 is formed with a square hole-like engagement hole portion 20 penetrating in the wall thickness direction on the upper peripheral wall portion thereof. When the plug 4 is inserted into the plug fitting portion 2, An engaging claw 9 made of synthetic resin of the plug 4 is engaged.

  As shown in FIGS. 2 and 5, the engagement hole 20 includes a resin part engagement hole 24 formed in the mold case 22 and a metal part engagement hole 25 formed in the shield cover 23. It has a layered structure, and an engagement strength reinforcing portion 26 is provided on the front side of the metal portion engagement hole 25 in the peripheral fitting direction.

  The shield cover 23 is formed in a hollow box shape whose front and lower surfaces are opened by punching and bending a conductive metal material. Side plate portions 31 and 32 that are bent in the shape of the rear plate, and a rear end plate 33 that is bent vertically downward from the rear edge of the top plate portion 30.

  The top plate portion 30 is formed with a rectangular hole-shaped metal portion engaging hole 25 penetrating in the thickness direction at the front end portion thereof. A front end edge of the top plate portion 30 adjacent to the portion engagement hole 25 forms an engagement strength reinforcing portion 26.

  The mold case 22 is integrally formed of an insulating synthetic resin material and has a rectangular tube shape with upper, lower, left and right peripheral wall portions 40 to 44, and the rear end of the rectangular tube shape is closed by a rear end plate portion 45. Has been.

  On the front surface of the rear end plate portion 45, a rectangular tube-shaped receptacle-side connection portion 46 that is open to the front surface is integrally projected, and contact portions 6a directed in the fitting direction are respectively provided on the upper and lower inner side surface portions of the receptacle connection portion 46. The contacts 6, 6... Are incorporated in the mold case 22 so as to be exposed in a parallel arrangement spaced from each other in the left-right direction.

  Reference numeral 47 in the drawing is a terminal holding portion which is integrally projected on the rear surface side of the rear end plate portion 45 and holds the board connection terminal pieces 6b of the respective contacts 5, 5. The lower end of the terminal piece 6b protrudes from the lower surface of the terminal holding portion 47, and the protruding portion is inserted into a through hole formed in the mounting substrate and soldered.

  The upper peripheral wall portion 40 is formed in a flat plate shape, and strip-shaped guide bodies 48, 48 facing the fitting direction are integrally provided on the lower surface of the upper peripheral wall portion 40 in a parallel arrangement with a space left and right. A groove-shaped claw portion guide groove 49 into which the elastic portion 11 of the engagement claw portion 10 of the plug 4 is fitted is formed therebetween.

  Further, the upper peripheral wall portion 40 has a rectangular hole-shaped resin penetrating in the thickness direction at the front end portion of the claw portion guide groove 49 and aligned with the position of the metal portion engagement hole 25 of the shield cover 23. A part engagement hole 24 is formed.

  As shown in FIG. 5, the resin part engagement hole 24 has an opening width in the fitting direction slightly narrower in the fitting direction than the metal part engagement hole 25, and the rear inner edge is the metal part engagement hole. 25 is formed in a continuous arrangement with the rear inner edge.

  The upper peripheral wall portion 40 is integrally provided with a supported convex portion 50 at an opening edge on the front side in the fitting direction of the resin portion engaging hole 24, and the supported convex portion 50 is formed on the metal portion engaging hole 25. The resin part engagement hole 24 is strengthened by fitting the support convex part 50 to the engagement strength reinforcing part 26 by being fitted to the inner edge on the front side in the fitting direction, and the inner edge of the strengthened resin part engagement hole 24 The engaging claw 9 is engaged with the hook.

  In the connector 1 configured as described above, when the plug 4 is inserted into the plug fitting portion 2, the elastic portion 11 of the engaging claw portion 10 is inserted into the claw portion guide groove 49, and the plug 4 is further connected to the plug fitting portion 2. When pushed in, the inclined surface 9b of the engaging claw 9 comes into contact with the front end edge of the mold case 22, the inclined surface 9b is pressed against the front end edge, the elastic portion 11 is bent, and the engaging claw 9 becomes the claw portion guide groove. 49, that is, enters the lower side of the upper peripheral wall 40.

  When the plug 4 is further pushed into the plug fitting portion 2, the engagement claw 9 moves in a state of sliding contact with the lower surface of the upper peripheral wall portion 40, and the desired fitting position, that is, the position of the engagement claw 9 is moved. When the position reaches the engagement hole 20, the elastic part 11 is elastically restored, the engagement claw 9 is inserted into the engagement hole 20, and the engagement claw 9 engages with the resin part engagement hole 24 (full). Locked).

  In this series of plug insertion operations, the synthetic resin engaging claw 9 always slidably contacts only the inner surface (the lower surface of the upper peripheral wall portion 40) of the synthetic resin mold case 22 and is engaged with the engaging hole portion 20. Since it contacts only the resin portion engagement hole 24, wear due to sliding can be suppressed.

  On the other hand, in a state where the plug 4 and the receptacle 3 are fitted, that is, in a state where the engaging claw 9 is engaged with the engaging hole portion 20, if a pulling direction force acts on the plug 4, the engaging claw 9. Counteracts the force in the pulling direction by applying a reaction force to the inner edge on the front side in the fitting direction of the resin portion engaging hole 24.

  At that time, the resin portion engaging hole 24 is strengthened by being integrated with the engaging strength reinforcing portion 26 so that the supported convex portion 50 contacts the engaging strength reinforcing portion 26 made of a metal material. Even if the position 20 is short from the front end of the receptacle 3, a high proof stress can be exerted against the pressing force from the engaging claw 9.

  On the other hand, when the plug 4 is pulled out from the plug fitting portion 2, first, the operation portion 12 of the engagement claw portion 10 is pushed to bend the elastic portion 11 and the engagement claw 9 is separated from the engagement hole portion 20. (Release of the full lock state) When the plug 4 is pulled out from the plug fitting portion 2 from this state, the elastic portion 11 is bent and the engaging claw 9 moves in a state of sliding contact with the lower surface of the upper peripheral wall portion 40.

  Even in this case, since the engaging claw 9 slides only on the inner edge of the resin portion engaging hole 24 and the lower surface of the upper peripheral wall portion 40, that is, the synthetic resin material, wear of the engaging claw 9 is suppressed.

  Note that the mode of the engagement hole 20 is not limited to the above-described embodiment. For example, as shown in FIG. 6, the metal part is engaged with the opening edge of the resin part engagement hole 24 on the outer surface of the mold case 22. A rectangular frame-shaped supported frame portion 51 that is fitted to the inner edge of the hole 25 may be integrally projected, and one side of the supported frame portion 51 may form a supported convex portion 50, as shown in FIG. The resin part engaging hole 24 and the metal part engaging hole 25 are formed in the same shape, and the engaging surface 9a of the engaging claw 9 is in contact with the resin part engaging hole 24 and the metal part engaging hole 25. You may do it.

  In any of these cases, the engaging claw 9 does not contact the edge portion of the metal material, so that the engaging claw 9 can be prevented from being worn. In this state, high engagement force can be obtained.

  In the above-described embodiment, the example in which the engagement hole portion 20 is provided in the upper peripheral wall portion 40 has been described. However, the arrangement of the engagement hole portion 20 is not limited to this, and the engagement claw 9 of the plug 4 is positioned at the position. In addition, the left and right peripheral wall portions 42 and 43 or the lower peripheral wall portion 41 may be provided.

  In the above-described embodiment, the in-vehicle multimedia connector has been described as an example. However, the connector method is not limited to the above-described method, and can be applied to other types of connectors. The shape of the receptacle is The present invention can be applied to a cylindrical shape or the like in addition to a rectangular tube shape with an open front surface.

DESCRIPTION OF SYMBOLS 1 Connector 2 Plug fitting part 3 Receptacle 4 Plug 5 Contact 6 Contact 7 External housing 8 Plug side connection part 9 Engagement claw 10 Engagement claw part 11 Elastic part 12 Operation part 20 Engagement hole part 21 Receptacle main body 22 Mold case 23 Shield cover 24 Resin part engagement hole 25 Metal part engagement hole 26 Engagement strength strengthening part 30 Top plate part 31, 32 Side plate part 33 Rear end plate 40-44 Perimeter wall part 45 Rear end plate part 46 Receptacle connection part 47 Terminal holding Part 48 guide body 49 claw part guide groove 50 supported convex part 51 supported frame part

Claims (3)

Synthetic resin engaging claws provided with a receptacle having a plug fitting portion opened on a front surface into which a plug is inserted, and projecting on an outer surface portion of the plug in an engaging hole formed in a peripheral wall portion of the receptacle In the connector in which the plug and the receptacle are connected by being engaged, and movement in a direction in which they are separated from each other is restricted,
The receptacle includes a mold case made of an insulating synthetic resin in which the plug fitting portion is opened on the front surface, and a shield cover made of a conductive metal material that covers an outer surface of the mold case.
The engagement hole portion has a two-layer structure including a resin portion engagement hole formed in the mold case and a metal portion engagement hole formed in the shield cover. Provided with an engagement strength strengthening part on the front side in the opposite direction,
In the mold case, a supported convex part that is fitted into the inner edge on the front side in the fitting direction of the metal part engagement hole is integrally projected on the opening side edge on the front side in the resin part engagement hole fitting direction. In addition, the resin portion engagement hole is reinforced by the supported convex portion coming into contact with the engagement strength reinforcement portion,
A connector characterized in that the engagement claw is engaged with the reinforced resin part engagement hole.   The receptacle is formed in a rectangular tube shape with an open front surface, and the inside of the rectangular tube shape is a plug fitting portion, and the engagement hole portion is formed in at least one of the upper peripheral wall portion, the left and right peripheral wall portions, and / or the lower peripheral wall portion. The connector according to claim 1, wherein the connector is formed. In the mold case, a frame-shaped supported frame portion that is fitted into the inner edge of the metal portion engaging hole is integrally projected at the opening edge portion of the resin portion engaging hole on the outer side surface of the molded case. The connector according to claim 1, wherein one side forms the supported convex portion.

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