JP2009252699A - Connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connector in which there is no possibility that a connection terminal and a terminal pressing means are broken even if vibration and impact to act on a rear holder are applied in a screwing work or the like. <P>SOLUTION: Since for the terminal pressing means on the rear holder 9 to press the connection terminal 7 in the housing body 5, an elastic piece 21 which is elastically deformed in a screw fastening direction to fix the rear holder 9 to a housing case 16, and elastically presses the connection terminal 7 is adopted, even if the vibrations and the impacts are acted on the rear holder when screwed, the vibration and the impact are hardly transmitted to the connection terminal 7, and it becomes possible to prevent that the connection terminal 7 and the terminal pressing means are broken by the applied vibration and the impact when screwed. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention includes a housing main body having a terminal receiving hole, a rear holder that engages with a rear portion of the housing main body and presses a connection terminal received in the terminal receiving hole, and a screwing portion formed in the rear holder; And the rear holder is screwed to a housing case having a front facing wall disposed at a position facing the front side of the screwing portion, whereby the housing body is fixed to the housing case. Concerning connectors.

  FIG. 6 is a conventional example of a connector in which a rear holder is engaged and attached to the rear part of the housing body, and FIG. 7 shows a state in the middle of assembly in which the rear holder is engaged with the housing body in the connector shown in FIG. Is.

  A connector 101 shown in FIGS. 6 and 7 is disclosed in Patent Document 1 below, and is engaged with a resin housing body 105 having a terminal receiving hole 103 and a rear portion of the housing body 105 to be a terminal. And a rear holder 109 that holds the connection terminal 107 accommodated in the accommodation hole 103.

  The housing body 105 has a mating terminal receiving hole 111 into which the connection terminal of the mating connector is inserted when the mating connector housing is fitted and connected to the distal end side (the left end side in FIG. 6). Is formed.

  The connection terminal 107 housed in the terminal housing hole 103 of the housing body 105 is a sheet metal crimp terminal that is crimped and connected to the distal end portion of the electric wire 113, and is covered with a crimped portion 107 a along the length direction of the electric wire 113. In addition, a conductor caulking portion 107 b and a substantially rectangular tube-shaped terminal main body portion 107 c that fits in the terminal accommodating hole 103 are formed. In addition, the terminal main body 107c protrudes into the adjacent mating terminal receiving hole 111, and is electrically connected to the mating connection terminal by elastic contact with the mating terminal receiving terminal that has entered the mating terminal receiving hole 111. An elastic contact piece 107d is provided.

  An elastic locking piece (lance) 104 that locks the connection terminal 107 inserted into the terminal accommodating hole 103 is integrally formed in the housing body 105.

  This elastic locking piece 104 is formed on the distal end side of the flexible arm portion 104a that runs parallel to the outside of the terminal accommodation hole 103 along the insertion direction of the connection terminal 107 (the direction of arrow A in FIG. 7). The locking projection 104b protruding inward is projected.

  Usually, it is difficult to firmly fix the connection terminal 107 in the terminal accommodating hole 103 without rattling only by the locking by the elastic locking piece 104. In particular, it is difficult to eliminate play in the fitting direction with the mating connector (in the direction of arrow B in FIG. 6).

  Therefore, the terminal holding means provided in the rear holder 109 is used to strengthen the connection terminal 107.

  As shown in FIG. 7, when the rear holder 109 inserts the engaging protrusion 131 into the holder engaging opening 121 at the rear of the housing main body 105, the terminal pressing means 133 provided in the engaging protrusion 131 is changed to FIG. As shown, the terminal abuts against the rear end of the terminal body 107c, and the connection terminal 107 is pressed forward and fixed.

  In addition, the inclined surface 135a of the end of the flexible arm 135 that is provided on the engaging protrusion 131 so as to protrude on the opposite side of the terminal pressing means 133 is engaged with the locking piece 123 formed at the edge of the opening 121. As shown in FIG. 6, it engages with the stop inclined surface 123a and is joined to the rear portion of the housing body 105.

  The terminal holding means 133 is a rigid, large-diameter columnar shape extending in the insertion direction of the connection terminal 107 and abuts the front end of the terminal main body portion 107c of the connection terminal 107 on the connection terminal 107. It is pressed and fixed substantially inelastically to prevent rattling in the direction of arrow B in FIG.

  The locking piece 123 provided at the rear end of the housing main body 105 fixes the rear holder 109 by locking the flexible arm 135 of the rear holder 109, and the reaction force acting on the rear holder 109 from the connection terminal 107. Take power.

JP-A-9-213399

  By the way, in the connector 101 having the rear holder 109 at the rear part of the housing main body 105 as described above, when the multi-pole type having a large number of connection terminals to be accommodated is used, the rear holder 109 that holds the terminal when connected to the mating connector has a larger operating force. Comes to work. Therefore, it is necessary to fix the rear holder 109 to the housing body 105 or the housing case for housing the housing body 105 with higher coupling strength.

  And, as one of the methods for fixing the rear holder 109 with high bonding strength, screwing is conceivable. Vibration and impact due to the operation of the electric tool act on the rear holder 109 during screwing.

  However, when the terminal pressing means 133 mounted on the rear holder 109 is in the form of a highly rigid column and presses and fixes the connection terminal 107 substantially inelastically like the connector 101 described above, a screwing operation or the like is performed. Thus, when vibration or impact is applied to the rear holder 109, the vibration or impact is transmitted to the connection terminal 107 without being attenuated via the terminal pressing means 133, and the connection terminal 107 or the terminal pressing means 133 is damaged. There was a risk of occurrence.

  An object of the present invention is to solve the above-mentioned problems, and a connector that does not cause damage to connection terminals and terminal pressing means even if vibration or impact acts on the rear holder by screwing the rear holder or the like. It is to provide.

The above object of the present invention is achieved by the following configurations.
(1) A housing body having a terminal housing hole, a rear holder that engages with a rear portion of the housing body and presses a connection terminal housed in the terminal housing hole, a screwing portion formed in the rear holder, With
The rear holder is a connector screwed to a housing case having a front facing wall disposed at a position facing the front side of the screwing portion,
The connector, wherein the rear holder is provided with an elastic piece as a terminal pressing means, which elastically deforms in a tightening direction of a screw for fixing the rear holder to the housing case and elastically presses the connection terminal.

(2) The elastic piece extends from the rear holder along the tightening direction of the screw, and the rear end of the connection terminal extends from the front end of the post in a substantially orthogonal direction to the front end side. The connector according to (1), wherein the connector abuts on a terminal abutting arm that is substantially L-shaped.

  In the connector according to the present invention described in the above (1) and (2), the terminal pressing means on the rear holder for pressing the connection terminal accommodated in the terminal accommodating hole of the housing main body is a screw for fixing the rear holder to the accommodating case. It is an elastic piece that elastically deforms in the tightening direction and elastically holds the connection terminal, and even if the rear holder screwing operation is carried out with an electric tool or the like, even if vibration or impact acts on the rear holder, Since the elastic piece attenuates the transmission of those vibrations and shocks, the vibrations and shocks transmitted to the connection terminals via the terminal pressing means are extremely reduced.

  Therefore, there is no possibility that the connection terminal and the terminal pressing means will be damaged by the vibration and impact applied to the rear holder from the outside during the screwing operation, and the product yield can be improved.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of a connector according to the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a perspective view of a housing main body and a rear holder engaged with a rear portion of the housing main body according to an embodiment of the connector according to the present invention. FIG. 2 is a longitudinal sectional view of an assembled state of the housing main body and the rear holder shown in FIG. 3 is an enlarged view showing the structure of the terminal pressing means on the rear holder for pressing the connection terminal in the housing body shown in FIG. 2, FIG. 4 is a longitudinal sectional view of the rear holder screwed to the housing case, and FIG. When a rear holder is screwed at both ends with a pair of screw members, it is an explanatory view of a state in which a central portion is lifted.

  As shown in FIGS. 1 and 2, the connector 1 according to this embodiment includes a resin housing main body 5 having a large number of terminal receiving holes 3 and a terminal receiving hole engaged with the rear portion of the housing main body 5. 3, a resin rear holder 9 that holds each connection terminal 7 accommodated in the housing 3.

  As shown in FIG. 2, the connection terminal 7 is accommodated in the terminal accommodation hole 3, and an elastic fitting portion 7 a into which the connection terminal of the mating connector is elastically fitted, and the rear holder 9 through the rear holder 9. The board connection terminal portion 7b protruding to the side is integrally formed of sheet metal.

  As shown in FIG. 1, the housing body 5 is provided with a locking projection 5 a for coupling the rear holder 9 on the outer peripheral portion thereof.

  Further, as shown in FIG. 1, the rear holder 9 is provided with a lock arm 10 that engages with the locking projection 5 a when it is brought into contact with the rear portion of the housing body 5.

  The lock arm 10 extends from the front surface of the rear holder 9 in the axial direction along the outer peripheral surface of the housing body 5, and protrudes from the tip of the lock arm 10 to engage with the locking protrusion 5 a on the housing body 5. As shown in FIG. 1, the engagement protrusion 10 b is engaged with the engagement protrusion 5 a so that the rear holder 9 is coupled to the rear end of the housing body 5. To do.

  As shown in FIG. 4, a housing case 16 having a front facing wall 14 with which the front surface of the rear holder 9 abuts is disposed on the front surface side of the rear holder 9.

  For example, in the vehicle or the like, the housing case 16 can also be used as a case for housing an engine control unit or the like, or can be used as an electrical connection box for housing a fuse or a relay.

The rear holder 9 of this embodiment has a pair of screwing portions 9a as shown in FIG.
Then, the rear holder 9 is positioned on the back surface side of the housing case 16 so that the front surface of the rear holder 9 abuts against the front surface facing wall 14 of the housing case 16, and by screwing the screwing portion 9 a to the front facing wall 14, It is fixed to the storage case 16.

  In the case of this embodiment, as shown in FIG. 1, the pair of screwing portions 9 a are formed by penetrating holes 9 c through which the screw members 18 are inserted into the plate portions 9 b that are in contact with the front facing wall 14.

  As shown in FIG. 4, the rear holder 9 having such a configuration is fixed to the housing case 16 by a screw member 18 inserted through the screwing portion 9a.

  In the case of this embodiment, as shown in FIGS. 2 and 3, as a terminal pressing means on the rear holder 9 that presses the connection terminal 7 in the housing body 5, a screw member 18 that fixes the rear holder 9 to the housing case 16 is used. An elastic piece 21 that elastically deforms in the tightening direction (the direction of arrow F in FIGS. 2 and 3) and elastically holds the connection terminal 7 is employed.

  As shown in FIG. 3, the elastic piece 21 includes a column portion 21 a that extends from above the rear holder 9 along the tightening direction of the screw member 18, and a tip that extends in a substantially orthogonal direction from the tip of the column portion 21 a. The terminal abutting arm 21b with which the rear end portion 7c of the elastic fitting portion 7a of the connection terminal 7 abuts on the side is formed in a substantially L shape.

  The tip of the support 21a of the elastic piece 21 can be elastically displaced in the direction indicated by the arrow m1 in FIG. 3, and the tip of the terminal contact arm 21b can be elastically displaced in the direction indicated by the arrow m2. Due to the displacement, the elastic piece 21 is elastically pressed and fixed to the rear end portion 7c of the connection terminal 7.

  In the connector 1 according to the embodiment described above, the terminal pressing means on the rear holder 9 that presses the connection terminal 7 received in the terminal receiving hole 3 of the housing body 5 is a screw that fixes the rear holder 9 to the receiving case 16. The elastic piece 21 is elastically deformed in the tightening direction and elastically presses the connection terminal 7. Even if the rear holder 9 is screwed or the like is carried out by an electric tool or the like, Since the elastic piece 21 as the terminal pressing means attenuates the transmission of those vibrations and shocks, the vibrations and shocks transmitted to the connection terminals 7 through the terminal pressing means are extremely small.

  Therefore, there is no possibility that the connection terminal 7 or the elastic piece 21 as the terminal pressing means is damaged by the vibration or impact applied to the rear holder 9 from the outside during the screwing operation, and the product yield can be improved.

  Furthermore, for example, as shown in FIG. 5, since the distance between the pair of screwing portions 9 a of the rear holder 9 is large, the middle portion of the rear holder 9 is not tightened by the screw member 18, and the housing case 16 to the rear holder 9. Even if a situation occurs in which the middle part of the rear piece 9 is lifted, if the elastic deformation amount of the elastic piece 21 is designed with a margin in advance, the middle part of the rear holder 9 has insufficient pressing force by the terminal pressing means. Can be prevented, and stable terminal pressing performance can be ensured.

  In the above embodiment, the terminal pressing means on the rear holder 9 that presses the connection terminal 7 in the housing body 5 employs the substantially L-shaped elastic piece 21, and the column portion 21 a and the terminal abutting arm 21 b. Since each of them can be elastically displaced in directions orthogonal to each other, excellent anti-rattle performance can be obtained while having a relatively simple structure.

  However, in the connector according to the present invention, the specific structure of the elastic piece as the terminal pressing means provided in the rear holder is not limited to the L shape shown in the above embodiment.

  Considering the formability of the rear holder, the shape of the rear end portion of the connection terminal, and the like, the shape of the elastic piece serving as the terminal pressing means can be changed to an appropriate shape other than the L-shape.

It is a perspective view of the rear holder engaged with the rear part of the housing main body of this embodiment of the connector which concerns on this invention, and this housing main body. It is a longitudinal cross-sectional view of the assembly state of the housing main body and rear holder shown in FIG. It is an enlarged view which shows the structure of the terminal pressing means on the rear holder which presses the connection terminal in the housing main body shown in FIG. It is a longitudinal cross-sectional view of the state in which the rear holder is screwed to the housing case. When a rear holder is screwed at both ends with a pair of screw members, it is an explanatory view of a state in which a central portion is lifted. It is a longitudinal cross-sectional view which shows the structure of the conventional connector. FIG. 7 is a longitudinal sectional view showing a state at the time of assembly in which a rear holder is engaged with a housing body in the connector shown in FIG. 6.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Connector 3 Terminal accommodation hole 5 Housing main body 7 Connection terminal 7b Board | substrate connection terminal part 7c Rear end part 9 Rear holder 9a Screwing part 14 Front facing wall 16 Accommodation case 18 Screw member 21 Elastic piece 21a Prop part 21b Terminal contact arm

Claims (2)

A housing body having a terminal housing hole, a rear holder that engages with a rear portion of the housing body and presses the connection terminal housed in the terminal housing hole, and a screwing portion formed in the rear holder,
The rear holder is a connector screwed to a housing case having a front facing wall arranged at a position facing the front side of the screwing portion,
The connector, wherein the rear holder is provided with an elastic piece as a terminal pressing means, which elastically deforms in a tightening direction of a screw for fixing the rear holder to the housing case and elastically presses the connection terminal.   The elastic piece extends from above the rear holder along the tightening direction of the screw, and extends substantially orthogonally from the tip of the column, and the rear end of the connection terminal contacts the tip side. The connector according to claim 1, wherein the connector is formed in a substantially L shape with the terminal abutting arm.

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