JP2011003355A - Contact type connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a contact type connector easily carrying out downsized and complexified inside-equipment wiring, by reducing the number of part items and making work processes more efficient through elimination of an auxiliary substrate.SOLUTION: The contact type connector 1 is provided with contacts 50 formed with a fixed part fixed and retained by a housing 10, an arm part extended from the fixed part and capable of elastic deformation having a contact part 54 at the tip, and a wire connecting part fitted to the fixed part and electrically connected with the wire, and a housing 10 having contact housing parts 12 housing the plurality of contacts 50, respectively, and contact support grooves 13 fixing and retaining the fixed part of each contact 50 as well as through-holes for making the wire connecting parts of the contacts 50 protruded outward. A slit for insulation displacement is formed at the wire connecting part of each contact 50 protruded outward of the housing 10 through the through-hole, and, to this insulation displacement slit, the wire 5 is pressed in to have the wire 5 electrically connected.

Description

  The present invention relates to a contact-type connector that is electrically connected to a connection partner by bringing a contact portion of a contact protruding outward from a housing into contact with the connection portion of the connection partner.

  Such a contact-type connector is provided, for example, in a connecting portion with a detachable / replaceable toner unit (or ink unit) in a printing machine such as a copying machine (copying machine) or a printer. A signal is transmitted between the toner unit and the print control unit. Conventionally, such a connector is attached on an auxiliary substrate 110 as shown in FIG. 11 (see, for example, Patent Document 1), and a contact 102 held in an insulating housing 101 is connected to a toner unit side substrate. The contact portion 103 is in contact with 120, and the soldering portion 104 is soldered to the auxiliary substrate 110. And it is comprised so that the signal transmission between units may be performed via another contact-type connector 130 attached on the auxiliary | assistant board | substrate 110, and the harness 131 connected to this contact-type connector 130. FIG.

JP-A-9-259964

  Such contact type connectors require mounting of components on the auxiliary board, soldering process, and harnesses for connecting to the control unit, and therefore there are problems that the number of components is large and the work process becomes complicated. It was. Moreover, since the contact type connector as described above is attached to the auxiliary substrate, there is a problem that an installation space larger than the connector size is required.

  The present invention has been made in view of such problems, and by reducing the number of parts by eliminating the auxiliary substrate, the work process is made more efficient, and the mounting method in the device is also given flexibility, and the size is reduced. It is another object of the present invention to provide a contact-type connector that can more easily perform in-apparatus wiring.

  To achieve the above object, a contact-type connector according to the present invention has a plurality of contacts made of an elastic material having conductivity, and a housing made of an electrically insulating material that holds the plurality of contacts in alignment. In this state, the connection part of the connection partner is brought into contact with the contact part of the contact projecting outward from the housing so as to be electrically connected to the connection partner. In addition, the contact includes a fixed portion that is fixedly held by the housing, and an elastically deformable arm portion that extends from the fixed portion and has the contact portion at the tip (for example, the bent portion 52 and the second portion in the embodiment). 1 extension portion 53) and a wire connection portion provided in the fixed portion and electrically connected to the electric wire, the contact housing space (for example, implementation) in which the housing accommodates the plurality of contacts, respectively. The contact holding portion 12 in the embodiment is formed side by side in the width direction of the housing, and the contact holding portion (for example, the contact support groove in the embodiment in the embodiment) that fixes and holds the fixing portion of the contact in the contact receiving space. 13) and the wire connecting portion in the state where the contact is fixedly held by the contact holding portion. An insertion hole for projecting outwardly of the groove is formed, and a press-contact slit is formed in the wire connecting portion of the contact projecting outward of the housing through the insert hole. The electric wire is press-fitted and electrically connected to the electric wire.

  In the contact-type connector having the above-described configuration, it is preferable that the contact is formed having a plurality of the wire connection portions.

  Moreover, the contact type connector of the said structure WHEREIN: It is preferable that the said housing has an electric wire accommodating part which encloses the side of the said electric wire pressure-connected by the said electric wire connection part of the said contact, and accommodates the said electric wire.

  In the contact-type connector having the above-described configuration, the contact receiving space of the housing may contact any one of the plurality of contacts with the connection portion of the connection partner rather than the other contacts. It is preferably formed so as to be accommodated in a state of protruding in the contact direction.

  In the contact-type connector according to the present invention, a press-contact slit is formed in a wire connection portion of a contact protruding outward of the housing through an insertion hole formed in the housing, and the wire is press-fitted into the press-contact slit. And configured to be electrically connected. In this way, by replacing the conventional method of soldering the connector to the auxiliary board and removing the auxiliary board and directly connecting the electric wire to the connector, the number of parts can be reduced and the work process can be efficiently performed. Can be realized. In particular, it is possible to eliminate the soldering work that often causes work mistakes (making defective products). In addition, because the size is smaller than the conventional connector and the installation space can be reduced, the degree of freedom in the mounting method in the device can be increased, and the wiring in the device that is downsized and complicated can be performed more easily. be able to. In addition, a plurality of connectors can be connected continuously by a method in which an electric wire is directly press-connected to the connector, and a daisy chain structure can be easily formed.

  In the contact-type connector, the contact is preferably formed with a plurality of wire connection portions. In this way, the contact is connected to the wire by the plurality of wire connection portions, so that the contact with the wire is more stable. Connection can be realized.

  In the contact-type connector, the housing preferably has an electric wire housing portion that encloses the side of the electric wire press-connected to the electric wire connecting portion of the contact and accommodates the electric wire. It is possible to prevent the connection between the contact and the electric wire from being easily disconnected.

  In the contact-type connector, the contact housing space of the housing accommodates any one of the plurality of contacts in a state of projecting in the contact direction with the connection portion of the connection partner rather than the other contacts. Preferably, the signal transmitted through the contact can be transmitted prior to the signal transmitted through the other contact. Therefore, for example, the ground (grounding) function that releases the static electricity charged to the connection partner via the contact or a signal (so-called ON / OFF signal) indicating whether or not the connection partner is connected is transmitted via the contact. It is supposed to be.

The state connected with the electric wire of the contact-type connector which concerns on this invention is shown, (a) is a back perspective view of a contact-type connector, (b) is a bottom view. The contact-type connector single-piece | unit is shown, (a) is a front perspective view of a contact-type connector, (b) is a back perspective view. (A) is a front view of the said contact-type connector, (b) is a rear view. (A) is a top view of the said contact-type connector, (b) is a bottom view. (A) is a side view of the contact-type connector, and (b) is a V (b) -V (b) cross-sectional view in FIG. 4 (a). The contact which comprises the said contact-type connector is shown, (a) is a side view of a contact, (b) is a front view. (A) is a top view of the said contact, (b) is a bottom view. (A), (b) is a figure which shows the connection state of the said contact and an electric wire. (A)-(c) is a figure explaining the contact state of the said contact-type connector and the other party member. It is a figure which shows the state (daisy chain structure) which connected the said several contact type connector continuously. It is a figure explaining the conventional contact type connector.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In the following description, for convenience of explanation, directions indicated by front and rear, left and right, and up and down arrows added to the drawings will be referred to as front and rear directions, left and right directions, and up and down directions, respectively. As shown in FIG. 2 and the like, a contact connector 1 according to an embodiment of the present invention includes a housing 10 that is attached to a printing device (copy machine or printer), and a plurality (here, four) held by the housing 10. ) Contacts 50.

  As shown in FIGS. 2 to 5, the housing 10 is formed using an electrically insulating material such as a resin, and has a rectangular parallelepiped first housing member 11 that holds four contacts 50, and a first housing. It has a flat plate-like second housing member 21 attached to the lower surface of the member 11, and is constructed in an assembling manner with these two housing members.

  The first housing member 11 is provided with a groove-like contact housing portion 12 that is formed side by side on four sides and extends in the front-rear direction, and is configured to hold the contacts 50 in the contact housing portion 12. The contact accommodating portion 12 is open at the upper and lower surfaces and the front and rear surfaces of the first housing member 11. The leftmost contact accommodating portion 12 has the accommodated contact 50 in front of the contact 50 accommodated by the other three contact accommodating portions 12 by a predetermined distance A (see FIG. 5A) (contact with the connection partner). It is formed so as to be positioned by protruding in the direction. Contact support grooves 13 and 13 for sandwiching the contacts 50 are provided on the left and right side walls in the contact accommodating portion 12 so as to extend in the front-rear direction. On the left and right side surfaces of the first housing member 11, there are provided locking portions 14 and 14 for detachably attaching the contact-type connector 1 to a printing device or the like, and locking step portions 15 and 15 protruding sideways. Has been.

  The second housing member 21 is provided with a groove-shaped electric wire receiving portion 22 formed in a line on the lower surface thereof and extending in the front-rear direction, and the electric wires 5 ( (See FIGS. 1 and 9). The electric wire accommodating part 22 is open to the front surface and the rear surface of the second housing member 21 so as to surround the left and right sides of the accommodated electric wire 5. Two insertion holes 23, 23 (see FIG. 5B) are arranged on the upper wall in the electric wire housing portion 22, and the second housing member 21 is attached to the first housing member 11 holding the contact 50. When attached, the wire connecting portions 56 and 56 of the contact 50 described later project into the wire receiving portion 22 through the insertion holes 23 and 23. Locking claws 24, 24 are provided at the left and right ends of the second housing member 21, and when the second housing member 21 is attached to the first housing member 11, The locking step portions 15 and 15 of the housing member 11 are engaged, and the second housing member 21 is fixed to the first housing member 11. It is also possible to remove the second housing member 21 from the first housing member 11 by releasing the engagement between the locking claws 24, 24 and the locking step portions 15, 15.

  The contact 50 is formed by using a thin plate-shaped metal material (conductive material), and as shown in FIGS. 6 and 7, a fixed portion 51 extending in the front-rear direction, and an upper portion from the front end portion of the fixed portion 51. A bent portion 52 bent inward, a first extension portion 53 extending obliquely upward and rearward from the upper end portion of the bent portion 52, a contact portion 54 bent downward from the upper end portion of the first extension portion 53, and contact A second extending portion 55 extending downward from the lower end portion of the portion 54, and is configured to be elastically deformable in a direction in which the contact portion 54 and the fixing portion 51 approach (or in a direction away from each other) with the bent portion 52 as a fulcrum. Yes.

  The fixing portion 51 is provided with two electric wire connecting portions 56 formed by cutting a part of the fixing portion 51 into a U-shape and bending it downward. The wire connection portion 56 includes a press-contact slit 57 formed to extend vertically. When the electric wire 5 is press-fitted into the press-contact slit 57, the wire 5 is press-connected to the wire connection portion 56. It is configured.

  The contact part 54 is a part which contacts the connection part 6a of the connection partner 6 (see FIG. 9). Cutout portions 58 and 58 are formed on the left and right sides of the contact portion 54, and the cutout portions 58 and 58 allow the width of the contact portion 54 (width in the left and right direction) to be the first and second extension portions 53 and 58. It is narrower than 55 (portion directly connected to the contact portion 54). At the lower end portion of the second extension portion 55, locking projections 59, 59 protruding left and right are provided.

  A method for assembling the contact-type connector 1 configured as described above and a method for connecting the contact 50 and the electric wire 5 will be described below. First, the contact 50 is inserted into the contact accommodating portion 12 of the first housing member 11 from the rear opening. At this time, the left and right end portions of the fixing portion 51 are inserted and held in the contact support grooves 13 and 13, whereby the contact 50 is held by the first housing member 11.

  When the contact 50 is thus held by the first housing member 11, the contact portion 54 and the first and second extension portions 53 and 55 are separated from the upper surface of the first housing member 11 (the upper opening of the contact housing portion 12). It will be in the state which protruded upwards (refer FIG. 2 etc.). At this time, the lower end portion of the second extension portion 55 extends into the contact housing portion 12, the locking projections 59, 59 abut against the upper wall in the contact housing portion 12, and the bent portion 52 is used as a fulcrum. The elastic deformation of the contact 50 in the direction in which the contact portion 54 moves away from the fixed portion 51 is restricted (see FIG. 5B). However, the contact 50 can be elastically deformed in the direction in which the contact portion 54 approaches the fixed portion 51.

  After the contacts 50 are inserted into the respective contact accommodating portions 12 and the first housing member 11 holds the four contacts 50, the second housing member 21 is attached to the lower surface of the first housing member 11. At this time, the second housing member 21 is fixed to the first housing member 11 by the engagement of the locking step portions 15 and 15 and the locking claws 24 and 24. Moreover, it will be in the state which the electric wire connection parts 56 and 56 of each contact 50 protruded in the electric wire accommodating part 22 via the penetration holes 23 and 23 (refer FIG.5 (b)).

  When the contact-type connector 1 is assembled in this way, next, the electric wire 5 is press-fitted into the electric wire accommodating portion 22 of the second housing member 21 from below, and the contact 50 and the electric wire 5 are press-connected. As shown in FIG. 8, the electric wire 5 press-fitted into the electric wire housing portion 22 is pushed into the press contact slits 57 and 57 of the electric wire connection portions 56 and 56 protruding into the electric wire housing portion 22, and the insulating coating 5 a of the electric wire 5. Is removed by the pressure contact slits 57, 57, and the core wire 5b comes into contact with the wire connecting portions 56, 56. Thus, the contact 50 and the electric wire 5 are electrically connected by pressure welding.

  In the contact type connector 1, in the second housing member 21, the electric wire accommodating portion 22 is also formed to open on the front surface of the second housing member 21, so that as shown in FIG. A plurality of contact-type connectors 1 can be connected to each other, and a daisy chain structure can be easily formed.

  Next, a contact state between the contact 50 and the connection portion 6a of the connection partner 6 will be described. Here, as shown in FIG. 9, relative movement with respect to the contact-type connector 1 so that the connection partner 6 (the surface having the connection portion 6a) is horizontal from the state of being inclined forward and downward (in the direction of arrow B). The case where the connecting portion 6a and the contact 50 abut will be described as an example.

  When the connection partner 6 in the above state relatively moves in the direction of arrow B, as shown in FIG. 9A, first, only the contact portion 54 of the leftmost contact 50 out of the four contacts 50 contacts the connection portion 6a. Touch. This is because, as described above, the leftmost contact 50 is located in front of the other three contacts 50 by a predetermined distance A (see FIG. 5). Accordingly, a signal transmitted through the leftmost contact 50 can be transmitted prior to a signal transmitted through the other contact 50. Therefore, for example, the member having the connection partner 6 has a ground (grounding) function for releasing static electricity charged through the leftmost contact 50, or the member having the connection partner 6 is attached to the member having the contact type connector 1. A signal indicating whether or not (so-called ON / OFF signal) is transmitted through the leftmost contact 50.

  Further, when the connection partner 6 is relatively moved in the direction of arrow B, all the contact portions 54 of the four contacts 50 abut on the connection portion 6a. Then, as shown in FIGS. 9B and 9C, each contact 50 is elastically deformed in a direction in which the contact portion 54 approaches the fixed portion 51 with the bent portion 52 as a fulcrum, and the contact portion 54 is caused by the reaction force. The connection part 6a is pressed. Thus, since the contact part 54 presses the connection part 6a with the reaction force of elastic deformation, the contact 50 can contact | abut with the connection part 6a reliably. As shown in FIG. 9C, when the connection partner 6 relatively moves to a horizontal state and comes into contact with the upper surface of the first housing member 11, the rear end portion of the contact 50 is a contact accommodating portion. Thus, the contact 50 is prevented from interfering with the first housing member 11 to be deformed (damaged).

  Note that, as described above, the connection portion 6a of the connection partner 6 and the contact 50 are in contact with each other in the state shown in FIG. 9, and the horizontal connection partner 6 slides from the front to connect with the connection portion 6a. In some cases, the contact 50 abuts. Also in this case, as in the case described above, the leftmost contact 50 abuts against the connecting portion 6a before the other three contacts 50, and thereby the signal transmitted through the leftmost contact 50 is It can be transmitted prior to the signal transmitted through the other contact 50.

  As described above, in the contact-type connector 1 according to the present embodiment, the pressure contact slit 57 is formed in the wire connection portion 56 of the contact 50 protruding outward of the housing 10 through the insertion hole 23 formed in the housing 10. The electric wire 5 is press-fitted into the press-contacting slit 57 and is electrically connected to the electric wire 5. In this way, by replacing the conventional method of soldering the connector to the auxiliary board and removing the auxiliary board and directly connecting the electric wire to the connector, the number of parts can be reduced and the work process can be efficiently performed. Can be realized. In particular, it is possible to eliminate the soldering work that often causes work mistakes (making defective products). In addition, because the size is smaller than the conventional connector and the installation space can be reduced, the degree of freedom in the mounting method in the device can be increased, and the wiring in the device that is downsized and complicated can be performed more easily. be able to.

  In the contact connector 1, the contact 50 is provided with the two electric wire connection portions 56, 56, so that a more stable connection with the electric wire 5 can be realized. Further, since the housing 10 is provided with the wire accommodating portion 22 that encloses the side of the electric wire 5 that is press-connected to the electric wire connecting portion 56 of the contact 50 and accommodates the electric wire 5, members in the device interfere with each other. Therefore, it is possible to prevent the contact 50 and the electric wire 5 from being easily disconnected.

  Further, in the contact-type connector 1, the contact accommodating portion 12 of the housing 10 contacts any one of the contacts 50 with the connecting portion 6 a of the connection partner 6 rather than the other contacts 50. Therefore, a signal transmitted through the contact 50 can be transmitted prior to a signal transmitted through the other contact 50. For this reason, for example, a member having a connection partner 6 has a ground function for discharging static electricity charged through the contact 50, or a signal indicating whether or not the connection partner 6 is connected (so-called ON / OFF signal). Transmission is made via the contact 50.

  In the above-described embodiment, the leftmost contact accommodating portion 12 is formed so that the accommodated contact 50 is positioned forward by a predetermined distance from the contacts 50 accommodated by the other three contact accommodating portions 12. However, it is not limited to this. For example, the contact 50 may protrude above the other three contacts 50, and the contact accommodating portion 12 is formed to project the accommodated contact 50 in the contact direction with the connection partner 6. It only has to be.

  In addition, in order to eliminate the auxiliary substrate as in the present invention, the base end portion of the contact (the portion corresponding to the wire connecting portion 56) is formed in a tab shape, and the connection control using the existing wire connector leads to the print control unit. A method of guiding can also be considered. According to this method, there is an advantage that attachment of the proposed connector to the device and harness processing can be performed separately.

DESCRIPTION OF SYMBOLS 1 Contact type connector 10 Housing 11 1st housing member 12 Contact accommodating part (contact accommodating space)
13 Contact holding groove (Contact holding part)
21 2nd housing member 22 Electric wire accommodating part 23 Insertion hole 50 Contact 51 Fixing part 52 Bending part (arm part)
53 First extension (arm)
54 Contact portion 56 Electric wire connection portion 57 Pressure welding slit 58 Notch

Claims (4)

The contact of the contact having a plurality of contacts made of an elastic material having conductivity and a housing made of an electrically insulating material that aligns and holds the plurality of contacts, and protruding outward from the housing in the state of being held in alignment. A contact-type connector that is electrically connected to the connection partner by bringing the connection part of the connection partner into contact with the part,
The contact is fixedly held by the housing, an elastically deformable arm portion extending from the fixed portion and having the contact portion at the tip, and an electric wire provided at the fixed portion and electrically connected to the electric wire And a connecting portion,
The housing includes contact housing spaces for housing the plurality of contacts, respectively, arranged in the width direction of the housing, and a contact holding portion for fixing and holding the fixing portion of the contacts in the contact housing space; An insertion hole for projecting the electric wire connecting portion outward of the housing in a state where the contact is fixedly held by the contact holding portion,
A press-contact slit is formed in the wire connection portion of the contact protruding outward from the housing through the insertion hole, and the wire is press-fitted into the press-contact slit and electrically connected to the wire. Contact type connector.   The contact-type connector according to claim 1, wherein the contact includes a plurality of the wire connection portions.   3. The contact according to claim 1, wherein the housing includes an electric wire housing portion that encloses a side of the electric wire press-connected to the electric wire connection portion of the contact and accommodates the electric wire. Type connector.   The contact accommodating space of the housing accommodates any one of the plurality of contacts in a state of projecting in a contact direction with the connection portion of the connection partner rather than the other contacts. The contact type connector according to claim 1, wherein the contact type connector is formed as described above.

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