JP6472966B2 - Connector device - Google Patents

Description

  The present invention relates to a connector device used for industrial equipment, electrical equipment, electronic equipment, and the like, and in particular, it has a simple structure, can be connected to a circuit in a housing and the outside, is miniaturized, and has excellent vibration resistance. The present invention relates to a structure that enhances waterproofness with the outside and provides stable contact (connection) reliability.

Generally, when connecting a housing and an external device, a connector is disposed in the housing, and a mating connector is fitted to the connector. In addition, in order to improve the waterproofness with the outside, it is possible to install an O-ring on an external connector to be inserted into the casing and to make the O-ring closely contact with the other party (connector or casing). This is done by injecting resin into the connector. As a waterproof connector, Patent Document 1 (Japanese Patent Laid-Open No. 2009-110754) is already proposed by the present applicant.
The card edge connector generally includes at least a plurality of contacts having contact portions that come into contact with the card and a housing that is an insulator in which the contacts are held and arranged. The housing is provided with a fitting port into which the card is inserted. Further, if necessary, a guide function for guiding the card into the fitting port and a lock means for the card may be provided at both ends in the longitudinal pitch direction. As such a document, Patent Document 2 (Japanese Patent Laid-Open No. 2007-287589) of a card edge connector already proposed by the present applicant is cited.
JP2009-110754. JP2007-287589.

There is a demand from customers for miniaturization of connectors. Further, even if the device is downsized, there is a demand for waterproofness and stable contact (connection) reliability. With the structure as described above in Patent Document 1 used for industrial equipment, waterproofness can be ensured, but miniaturization of the connector is difficult.
In order to reduce the size of the connector, if it is a so-called card edge type connector that is connected via a card, the connector can be reduced in size, but the waterproofness cannot be maintained. Further, the structure as in Patent Document 2 described above does not lead to a reduction in the size of the connector. Furthermore, vibration resistance is also required for connectors used in industrial equipment.

  The present invention has been made in view of such conventional problems, and has a simple structure, can be connected to a circuit in a housing and the outside, is downsized, has excellent vibration resistance, and is waterproof to the outside. And a connector device having a structure in which stable contact (connection) reliability can be obtained.

The present invention has been made to achieve the above object, and is a connector device that connects a circuit in a housing and an external device, and is connected to a card inserted into the connector and a contact portion that contacts the card. A connector having a contact portion for connecting to an object, a housing having a fitting port in which the contact is held and arranged and into which the card is inserted, and a fixture mounted on a substrate, and a cover having waterproof means When provided with a protruding piece which protrudes in the insertion direction of the card from the fixture provided a connector device according to claim Rukoto provided the holding means of the card on the distal end side of the projecting piece.

In the connector device, the cover is provided with an engaging means for engaging with the casing protruding in the casing direction, and the locking means for engaging with the engaging means is provided on the casing. The connector device is provided with a groove for holding the card in the cover. Further , the connector device is provided with an O-ring and a bush integrally or separately on the housing side as the waterproof means, and is waterproofed by pressing the O-ring and the bush against the housing.

According to the connector device of the present invention, it is possible to connect the circuit in the housing and the outside with a simple structure, and it is small in size, excellent in vibration resistance, enhanced in waterproofness, and stable contact (connection) reliability. Sex is obtained. Further, by providing the card holding means, the vibration resistance can be further improved.

(A) It is the perspective view which looked at the connector apparatus of this invention of the state attached to the housing | casing from the cover mounting | wearing side. (B) It is the perspective view which looked at the connector apparatus of this invention of the state except the housing | casing from the cover mounting | wearing side. (C) It is the perspective view which looked at the connector apparatus of this invention of the state which removed the cover from the cover mounting | wearing side. (A) It is the perspective view which looked at the connector of this invention of the state which inserted the card | curd from the fitting port side. (B) It is the perspective view which looked at the connector of this invention from the fitting port side. (C) It is the perspective view which looked at the connector of this invention from the opposite side to the fitting port. (A) It is sectional drawing which cut the connector of this invention of the state which inserted the card | curd in the insertion hole part into which a contact is inserted. (B) It is sectional drawing which cut the connector of this invention in the insertion hole part in which a contact is inserted. (C) It is sectional drawing which cut the connector of this invention in the mounting hole part in which a fixing tool is inserted. It is a perspective view of a card. (A) It is the perspective view which looked at the contact from the fitting direction. (B) It is the perspective view which looked at the contact from the opposite side to the fitting direction. (A) It is the perspective view which looked at the housing from the fitting port side. (B) It is the perspective view which looked at the housing from the opposite side to the fitting port. (C) It is sectional drawing which cut the housing in the insertion hole part in which a contact is inserted. (A) It is the perspective view which looked at the fixing tool from the fitting direction. (B) It is the perspective view which looked at the fixing tool from the opposite side to the fitting direction. (A) It is the perspective view which looked at the cover from the housing | casing mounting direction. (B) It is the perspective view which looked at the cover from the opposite side to the housing mounting direction. (C) It is sectional drawing which cut the cover in the center of the width direction. (A) It is a perspective view of an O-ring. (B) It is a perspective view of a bush. It is a perspective view of another bush. (A) It is the perspective view which looked at the clamp nut from the mounting direction. (B) It is the perspective view which looked at the clamp nut from the opposite side to the mounting direction. (C) It is sectional drawing which cut the clamp nut in the center. (A) It is the perspective view which looked at the cable clamp from the mounting direction. (B) It is the perspective view which looked at the cable clamp from the opposite side to the mounting direction. (A) It is the perspective view which looked at another connector apparatus of this invention of the state attached to the housing | casing from the cover mounting | wearing side. (B) It is the perspective view which looked at another connector apparatus of this invention of the state except the housing | casing from the cover mounting | wearing side. (B) It is the perspective view which looked at another connector apparatus of this invention of the state which removed the cover from the cover mounting | wearing side.

The feature of the present invention is that
A connector device 10 for connecting a circuit in a housing 50 and an external device,
A card 40 inserted into the connector 20;
A contact 22 having a contact portion 221 that contacts the card 40 and a connection portion 223 that connects to a connection object, a housing 24 having a fitting port 15 in which the contact 22 is held and arranged, and the card 40 is inserted, and a substrate A connector 20 having a fixture 26 mounted on;
The connector device 10 includes a cover 30 having waterproof means.
In other words, the connector device 10 of the present invention is reduced in size by using (using) the card 40, connects the circuit in the housing 50 to an external device, and uses the cover 30 having waterproof means to waterproof the outside. It is a thing that secures sex. Further, the holding means of the card 40 is provided in the fixture 26 to improve the vibration resistance.

    An embodiment of the connector device 10 according to the present invention will be described with reference to FIGS. FIG. 1 (A) is a perspective view of the connector device of the present invention attached to the housing as seen from the cover mounting side, and FIG. 1 (B) is a cover of the connector device of the present invention with the housing removed. It is the perspective view seen from the attachment side, (C) is the perspective view which looked at the connector apparatus of this invention of the state which removed the cover from the cover attachment side. 2A is a perspective view of the connector of the present invention in a state where a card is inserted as seen from the fitting port side, and FIG. 2B is a perspective view of the connector of the present invention as seen from the fitting port side. ) Is a perspective view of the connector of the present invention as viewed from the side opposite to the fitting port. FIG. 3A is a cross-sectional view of the connector of the present invention in a state where a card is inserted, and is a cross-sectional view taken along the insertion hole portion into which the contact is inserted, and FIG. It is sectional drawing cut | disconnected by the hole part, (C) is sectional drawing which cut the connector of this invention in the mounting hole part by which a fixing tool is inserted. FIG. 4 is a perspective view of the card. FIG. 5A is a perspective view of the contact as seen from the fitting direction, and FIG. 5B is a perspective view of the contact as seen from the side opposite to the fitting direction. 6A is a perspective view of the housing as seen from the side of the fitting port, FIG. 6B is a perspective view of the housing as seen from the side opposite to the fitting port, and FIG. 6C is a perspective view of the housing where the contact is inserted. It is sectional drawing cut in the insertion hole part. FIG. 7A is a perspective view of the fixture viewed from the fitting direction, and FIG. 7B is a perspective view of the fixture viewed from the side opposite to the fitting direction. 8A is a perspective view of the cover as viewed from the housing mounting direction, FIG. 8B is a perspective view of the cover as viewed from the side opposite to the housing mounting direction, and FIG. FIG. FIG. 9A is a perspective view of an O-ring, and FIG. 9B is a perspective view of a bush. FIG. 10 is a perspective view of another bush. 11A is a perspective view of the clamp nut as viewed from the mounting direction, FIG. 11B is a perspective view of the clamp nut as viewed from the side opposite to the mounting direction, and FIG. 11C is a sectional view of the clamp nut at the center. FIG. 12A is a perspective view of the cable clamp as viewed from the mounting direction, and FIG. 12B is a perspective view of the cable clamp as viewed from the side opposite to the mounting direction. FIG. 13A is a perspective view of another connector device of the present invention attached to the housing as seen from the cover mounting side, and FIG. 13B is another connector of the present invention with the housing removed. It is the perspective view which looked at the apparatus from the cover mounting | wearing side, (C) is the perspective view which looked at another connector apparatus of this invention of the state which removed the cover from the cover mounting | wearing side.

  Before describing the connector 10, the connection object will be described. Examples of the connection object include a board, a flexible printed board (hereinafter referred to as FPC), a cable, and the like. The present embodiment is a substrate, and the substrate is provided with a land on which the contact 22 of the connector 20 is mounted and a pattern extending from the land and connected to an electronic component or the like. In the reverse version of the connector 20 and the card 40 described below, the cable 60 is used.

  A connector device 10 according to the present invention will be described with reference to FIGS. The connector device 10 includes at least a connector 20, a card 40, and a cover 30. The connector 20 has at least a plurality of contacts 22, a housing 24, and a fixture 26.

  First, the card 40 will be described. The card 40 is provided with a land 403 that contacts the contact portion 221 of the contact 22, a pattern 402 extending from the land 403 is provided, and a hole 401 is provided at the tip of the pattern 402. Other electronic components or cables are mounted in the holes 401 by soldering.

  Next, the contact 22 will be described. The contact 22 is made of metal and is manufactured by a known press working or cutting process. Since the material of the contact 22 is required to have springiness, conductivity, dimensional stability, etc., examples thereof include brass, beryllium copper, phosphor bronze and the like. In this embodiment, the contact 22 is fixed to the housing 24 by press-fitting. However, any contact may be used as long as the contact 22 can be fixed, such as lance, welding or integral molding. There are two types of contacts 22, short and long, but the shape is the same and only the length of the connecting portion 223 is different. As a drawing, only the short is shown in FIG. 4.

The contact 20 includes at least a contact portion 221 that contacts the card 40, a connection portion 223 that is mounted on a connection target (board or cable), and further includes a holding portion 222 that is fixed to the housing 24. .

  The contact portion 221 is a portion that comes into contact with the card 40 and is curved so as to be easily contacted. The shape and size of the contact portion 221 are appropriately designed in accordance with the shape and size of the card 40 in consideration of contact stability, connector miniaturization, strength, workability, and the like.

  The connection part 223 is a part connected to a connection object. The connection method differs depending on the connection object. Examples of the connection method in the case of a substrate include soldering (surface mounting and dip) and press fit. In this embodiment, in the case of a substrate, the contact 22 is mounted by soldering. Examples of connection methods in the case of cables include soldering, pressure welding, and pressure bonding. In this embodiment of another type described below, the cable is mounted by soldering.

  The holding portion 222 may be any method as long as it can be fixed to the housing 24, and examples thereof include press-fitting, hooking (lance), welding, and integral molding. In this embodiment, the housing 24 is held and fixed by press fitting. In the present embodiment, arrowheads are provided on both sides in the width direction and are press-fitted into the housing 24. The shape and size of the holding portion 222 are appropriately designed in consideration of holding force, workability, strength, and the like.

  Next, the housing 24 will be described. The housing 24 is an electrically insulating plastic, and is manufactured by known injection molding or cutting. This material is appropriately selected in consideration of dimensional stability, workability, cost, etc. Examples include butylene terephthalate (PBT), polyamide (66PA, 46PA), liquid crystal polymer (LCP), polycarbonate (PC), and synthetic materials thereof. In this embodiment, it is manufactured by injection molding.

  The housing 24 has a substantially box shape. In this embodiment, the housing 24 includes a main body 241 and flanges 242 on both sides in the width direction. An insertion hole 243 for holding and arranging the contacts 22 is provided in the main body 241 of the housing 24. The contact 22 is fixed (held) to the insertion hole 243 by press-fitting, hooking (lance), welding, integral molding, or the like. In this embodiment, the contact 22 is fixed by press fitting. The shape and size of the insertion hole 243 may be any shape as long as the contact 22 can be held, and is appropriately designed in consideration of holding force, strength, workability, miniaturization, and the like.

  The main body 402 is provided with a fitting port 15 into which the card 40 is inserted. The shape and size of the fitting port 15 may be designed as long as it can be fitted to the card 40, but is appropriately designed in consideration of strength, workability, and the like along the shape and size of the card 40. A contact portion 221 of the contact 22 protrudes into the fitting port 15 so that the contact portion 221 and the inserted card 40 come into contact with each other.

  In the present embodiment, the flange 242 is provided with a mounting hole 244 for mounting the fixing tool 26 in order to connect the object to the connection object more firmly and hold the card 40. The mounting hole 244 only needs to be able to mount the fixture 26, and is appropriately designed in consideration of holding strength, holding force, workability, strength, and the like.

Next, the fixture 26 will be described. The fixture 26 is made of metal and is manufactured by a known press working or cutting process. The material of the fixture 26 is required to have springiness, conductivity, dimensional stability, etc., and examples thereof include brass, beryllium copper, and phosphor bronze. In this embodiment, the fixing tool 26 is fixed by press-fitting into the mounting hole 244 of the flange 242 of the housing 24. However, any fixing means 26 may be used, such as hooking (lance), welding, or integral molding. Two fixing devices 26 are attached to both sides of the housing 24 in the width direction.

The fixture 26 has at least a holding portion 242 to the housing 24 and a connecting portion 263 to be mounted on the board. In this embodiment, the protruding piece 261 for guiding and holding the card 40 is used. Is provided so as to protrude in the insertion direction of the card 40. A pinching portion 264 is provided at the tip of the protruding piece 261, curved so that the card 40 can be pinched by two fixing tools 26, and held by the pinching portions 264 of the two fixing tools 26 to hold the guide. ing.

  The sandwiching portion 264 is a portion that sandwiches the card 40 and is curved so that it can be easily sandwiched. The shape and size of the holding portion 264 are appropriately designed in consideration of the holding force and holding ability, the miniaturization of the connector, strength, workability, and the like along the counterpart.

  The connection part 263 is a part connected to the substrate. Examples of the connection method include soldering (surface mounting and dip) and press fitting. In this embodiment, the contact 22 is mounted by dipping soldering. As the shape of the connecting portion 263, a slit is provided at the center to form a bifurcated shape, and it can be temporarily mounted with elasticity.

  The holding portion 262 may be any method as long as it can be fixed to the housing 24, and examples thereof include press-fitting, hooking (lance), welding, and integral molding. In this embodiment, the housing 24 is held and fixed by press fitting. In the present embodiment, arrowheads are provided on both sides in the height direction and are press-fitted into the housing 24. The shape and size of the holding portion 222 are appropriately designed in consideration of holding force, workability, strength, and the like.

  Next, the cover 30 will be described. The cover 30 is an electrically insulating plastic, and is manufactured by injection molding or cutting of a known technique. This material is appropriately selected in consideration of dimensional stability, workability, cost, etc. Examples include butylene terephthalate (PBT), polyamide (66PA, 46PA), liquid crystal polymer (LCP), polycarbonate (PC), and synthetic materials thereof. In this embodiment, it is manufactured by injection molding.

  The cover 30 has a substantially box shape. The cover 30 is provided with a space 301 into which the protruding card 40 or the protruding connector 20 as an example described below is placed. The shape and size of the space 301 is designed as appropriate in consideration of commonality, workability, strength, and the like along the protruding portion.

  In the cover 30, an insertion groove 302 into which the O-ring 32 is inserted is provided on the outer periphery of the space 301. The O-ring 32 is held in the insertion groove 302 by press-fitting or bonding. The insertion groove 302 is formed to such a depth that the O-ring 32 protrudes.

  The cover 30 is provided with a mounting portion 303 to which the bush 34 is mounted in the protruding direction of the cable 60. The bush 34 is held in the mounting portion 303 by press-fitting or bonding. The mounting portion 303 has a depth such that the bush 34 protrudes.

  The shape and size of the insertion groove 302 and the mounting portion 303 are such that the O-ring 32 and the bush 34 are pressed against the housing 50 and pressed to increase the waterproof property, and the waterproof property and the pressing force. It is designed as appropriate in consideration of properties, holding power, workability, strength, and the like.

  Further, the cover 30 is an engagement piece that is held by the housing 50 as an engaging means and engages (hangs) with the housing 50 in order to press the O-ring 32 and the bush 34. 304 and a convex portion 305 are provided at the tip thereof. The shape and size of the engaging piece 304 and the convex portion 305 are appropriately designed in consideration of holding force, pressing property, workability, strength, and the like.

  Further, the cover 30 is provided with a groove 306 that guides the card 40 and prevents the card 40 from shaking when the card 40 protrudes. The shape and size of the groove 306 is designed appropriately in accordance with the shape and size of the card 40 and considering its role (guide and shake prevention), workability, strength, and the like.

  When the cable clamp 38 and the crimp nut 36 described below are used, the cover 30 is partially protruded toward the protruding side of the cable 60, a screw portion that can be screwed to the crimp nut 36 is provided, and for rotation prevention An engagement recess that engages with the recess 383 of the cable clamp 38 is provided.

  Next, the O-ring 32 will be described. The O-ring 32 is an electrically insulating elastic material, and a commercially available one is purchased. As described above, the O-ring 32 may be made of any material as long as the O-ring 32 is pressed and has improved waterproofness.

  Next, the bush 34 will be described. The bush 34 is an electrically insulating elastic material, and is manufactured by a known transfer method or compression method. This material is appropriately selected in consideration of dimensional stability, workability, cost, elastic force, etc. In general, synthetic rubbers and elastomers can be mentioned. In this embodiment, it is made of synthetic rubber. As described above, the bush 34 may be made of any material as long as it is pressed and has improved waterproofness. In this embodiment, the bush 34 is pressed against the casing 50 to form a semicircular shape that enhances waterproofing. However, it is sufficient if the waterproofing is improved, and the bush 34 protrudes from the casing 50 to be cylindrical. A structure that improves waterproofness by using a clamp nut 36 and a cable clamp 38 described below may be used.

  Next, the cable clamp 38 will be described. The cable clamp 38 is an electrically insulating plastic, and is manufactured by a known technique of injection molding. The material of the cable clamp 38 is appropriately selected in consideration of dimensional stability, workability, cost, and the like. Generally, polybutylene is used. Examples thereof include terephthalate (PBT), polyamide (66PA, 46PA), liquid crystal polymer (LCP), polycarbonate (PC), and synthetic materials thereof. The cable clamp 38 is for holding the cable 60 by screwing the clamp nut 36 to the cover 30, and for enhancing waterproofing by crushing the bush 34. The cable clamp 38 has a substantially cylindrical shape and has a hole into which the cable 60 is inserted. The hole is appropriately designed in consideration of strength and workability so that the cable 60 can be inserted. The cable clamp 38 is provided with a recess 383 on the side in contact with the cover 30 and a plurality of comb wings 382 having a substantially square shape on the side in contact with the clamp nut 36. The concave portion 383 engages with the engagement concave portion of the cover 30 to stop the rotation of the cable clamp 38, and the comb blade 382 is bent at the pressing portion 363 of the clamp nut 36. The cable 60 is held by pushing in the direction of the cable 60, and the bush 34 is crushed to enhance waterproofing. Due to this role, a slit is provided between the comb wings 382 to provide elasticity, and a tip protrusion is provided at the tip of the comb wings 382 to improve the biting property to the cable. The shape and size of the comb wing 382 is appropriately designed in consideration of the above role, elasticity, holding force of the cable 60, workability, and the like.

  Next, the clamp nut 36 will be described. The clamp nut 36 is made of metal and is manufactured by a known technique such as cutting or die casting, and the material is appropriately selected in consideration of dimensional stability, workability, cost, etc. A zinc alloy, an aluminum alloy, etc. can be mentioned. The clamp nut 36 has a substantially cylindrical shape and has a fitting hole 361 into which the cable 60 is inserted. On the inner periphery of the fitting hole 361, a female screw part 362 for screwing with the cover 30 is provided as a mounting means with the cover 30, and the cable clamp 38 is pressed to press the cable clamp 38. A pressing portion 363 that holds the cable 60 and enhances waterproofing by crushing the bush 34 is provided. The pressing portion 363 only needs to press the comb wings 382 of the cable clamp 38 to hold the cable 60 and to improve the prevention. The pressing portion 363 is appropriately designed in consideration of the holding force and workability of the cable 60. To do.

  Here, the housing 50 will be described. The casing 50 has a box shape, and in the casing 50, electronic components, electrical components, substrates, cables, and other devices are arranged according to the purpose. The casing 50 is provided with a locking means at a position corresponding to the engagement piece 304 of the cover 30. The locking means is a hook structure and is provided with a recess.

  Finally, another type of connector device 11 as shown in FIG. 13 will be described. The constituent members are the same as those of the connector device 10 described above. The difference is the arrangement of the connector 20 and the card 40. That is, in the case of the connector device 11 of FIG. 13, the card 40 is disposed in the housing 50, and the connector 20 is fitted to the card 40 from the outside of the housing 50. In this case, the cable 60 is connected to the connection portion 223 of the contact 22 of the connector 20.

  As an application example of the present invention, it is used for a connector device used in industrial equipment, electrical equipment, electronic equipment, etc., and in particular, it can be connected to a circuit in a casing and the outside with a simple structure, and it is downsized and resistant to damage. The present invention relates to a structure that has excellent vibration characteristics, enhances waterproofness with the outside, and provides stable contact (connection) reliability.

DESCRIPTION OF SYMBOLS 10, 11 Connector apparatus 15 Fitting port 20 Connector 22 Contact 221 Contact part 222 Holding part 223 Connection part 24 Housing 241 Main body 242 Flange 243 Insertion hole 244 Mounting hole 26 Fixing tool 261 Protruding piece 262 Holding part 263 Connection part 264 Holding part 30 Cover 301 Space 302 Insertion groove 303 Mounting part 304 Engagement piece 305 Protrusion part 306 Groove 32 O-ring 34 Bush 36 Clamp nut 361 Fit-through hole 362 Female thread part 363 Press part 38 Cable clamp 381 Ring 382 Comb 383 Concave part 40 Card 401 Hole 402 Pattern 403 Land 404 Recess 50 Housing 60 Cable

Claims (4)

A connector device for connecting a circuit in a housing and an external device,
A card inserted into the connector;
A contact having a contact portion that contacts the card and a connection portion that connects to a connection object, a housing having a fitting port in which the contact is held and arranged and the card is inserted, and a fixture mounted on the board A connector having
A cover having waterproof means ,
Providing a protruding piece protruding from the fixture in the card insertion direction,
Connector apparatus characterized by Rukoto the distal end side of the projecting piece is provided the holding means of said card. The cover is provided with an engagement means with the housing protruding in the housing direction,
The connector device according to claim 1 , wherein locking means for engaging with the engaging means is provided on the housing . The connector device according to claim 1 , wherein the cover is provided with a groove for holding the card. 4. The waterproofing means according to claim 1 , wherein an O-ring and a bush are integrally or separately disposed on the housing side, and the O-ring and the bush are pressed against the housing . The connector apparatus as described in any one .

Images