JP2019106339A - contact - Google Patents

Abstract

To provide a contact that can use a connection target as a form to be accessed and connected from a width direction of a projection part and that can stably form a conductive path in which electric length can be made short.SOLUTION: In a contact, in which a housing, a projection part that projects from an opening of the housing and that contacts with the connection target, and a spring part that is accommodated in the housing, that makes a free end side to be concatenated with the projection part, and that energizes the projection part in the projection direction are formed by bending a sheet of conductive plate material, the projection part forms a side wall part at a free end side, a guide side wall part branches in its width direction respectively to extend in an opposite direction of the projection direction, and the one guide side wall part is the contact in which at least free end part elastically slides to contact with a wall part inner surface of the housing.SELECTED DRAWING: Figure 21

Description

  The present invention relates to a contact used for electrical connection between a connection target and a connection target.

Various parts necessary for securing the function of the device are disposed in various electric devices such as a cellular phone. Moreover, in order to electrically connect these components (connection object and connection object), a contact may be utilized.
Although there are various such contacts, one of the contacts disclosed in Patent Document 1 with the smallest number of parts is known. This contact is formed by punching and bending a single conductive plate into a predetermined shape, and as shown in FIGS. 1 to 3 of Patent Document 1, an inverted U-shaped contact portion 14 from the housing 12 A (protrusion) is provided so as to project, and the contact portion 14 (protrusion) is biased in the projection direction by the spring 16 (leaf spring) in the housing 12. (In this way, a type in which a retractable contact portion 14 (protrusion portion) formed by bending a conductive plate having a predetermined shape is urged in the projection direction by the spring portion 16 (leaf spring) We call it "bent type projection part energizing type".)

  Since the contact part 14 (protrusion part) is biased in the projection direction by the spring part 16 (leaf spring) in the "bent type projection part urging type" contact, the connection target is the contact part 14 (protrusion part) The contact object is connected to the contact portion 14 stably by connecting so as to push the contact portion 14 formed of a strip-like plate material from the front of the top of the upper portion and obtaining an appropriate contact load by the elastic force of the spring portion 16 (leaf spring). It can be connected. (A form in which the connection target is approached from the front of the contact part is called a front approach form for convenience.)

JP, 2015-46229, A

  For example, when another component accidentally hits the side surface of the contact portion 14 in the width direction (direction orthogonal to the biasing direction of the spring portion 16) in the manufacturing process of the electric device, the contact is effective. In some cases, the contact portion may be misaligned or deformed in the width direction. In particular, when the contact is miniaturized, the thickness is also reduced, which promotes the tendency.

In addition, when the contact object is moved in the width direction and brought close to the side surface of the protrusion, there is a possibility that the same situation as in the case of the component may occur, and the contact approaches and connects the connection object from the width direction Not used in the form.
In the present application, the direction facing the side wall of the protrusion is referred to as the "width direction", and in the width direction, the direction approaching the protrusion is "inward in the lateral direction", and the direction away from the protrusion is "outward in the lateral direction" It may be called.

  Furthermore, since the electrical connection between the connection target and the connection target is a conductive path through the S-shaped leaf spring 16 having a bending portion, the electrical length of the conductive path becomes longer by that amount, In applications such as antenna feeding, it is a factor that causes deterioration of high frequency characteristics.

The present invention has been made in view of the above-mentioned problems, and it is only a form (referred to as a front approach form) in which the connection object approaches and connects from the front of the projection part while being a "bent type projection part biasing type". Rather, it is an object of the present invention to provide a contact that can be used as a form in which a connection target is approached and connected from the width direction of a protrusion.
In addition, in the configuration in which the connection target is connected to the contact of the bending type projection-biased type, the configuration in which the connection target is made to approach the side wall inward in the lateral direction to the side wall of the projection is there. In the side approach mode, the connection target pushes the side wall of the protrusion and advances in the side direction so that the protrusion can be retracted by the amount of the pushed-out.

  Another object of the present invention is to provide a contact capable of stably forming a conductive path whose electrical length can be shortened.

  The contact according to the present invention is accommodated in the housing, a projection projecting from the opening of the housing and coming into contact with the connection target, and housed in the housing, the free end side being connected to the projection and the projection in the projection direction In the contact formed by bending a sheet of conductive plate material, the projecting portion forms a side wall portion on the free end side, and the guide side wall portion is branched in each width direction thereof The guide side wall portion extends in a direction opposite to the projecting direction, and at least a free end portion of the one guide side wall portion elastically contacts with the inner surface of the wall portion of the housing. According to this configuration, it is possible to use the connection target in the form of approaching and connecting from the width direction of the projecting portion, and it is possible to stably form the conductive path which can shorten the electrical length.

  More specifically, as the above configuration, an engaging portion is provided on the side of the protrusion, and the engaging portion engages with the portion on the housing side, thereby achieving at least one direction orthogonal to the projecting direction. The displacement of the protrusion may be suppressed. In addition, "the protrusion part side" here means that it is the side of a protrusion part seeing from a spring part, and "the housing side" means being a side of a housing seeing from a spring part.

  More specifically, as the above configuration, the engaging portion having a protrusion in the width direction is provided to extend from the side wall portion of the protruding portion, and the protrusion engages with the portion on the housing side. It may be More specifically, as the configuration, the protrusion may be fitted in a hole provided in the housing, and may be configured to engage with an edge of the hole. More specifically, the hole may be formed in an arc shape.

  In the above configuration, the housing is provided with an inclined portion which is inclined toward the inside of the housing as it proceeds in the reverse direction, and at least one of the guide side wall portions is elastically slidable on the inclined portion. It may be configured to be in contact. More specifically, as the configuration, the inclined portion may be configured by cutting and bending a part of the housing.

  According to the contact according to the present invention, it is possible to use the connection target in the form of approaching and connecting from the width direction of the projecting portion, and it is possible to stably form the conductive path which can shorten the electrical length.

It is an appearance perspective view of contact X concerning a 1st embodiment. FIG. 7 is an external perspective view of the contact X as viewed from another direction. It is sectional drawing by the lower viewpoint of the contact X. FIG. It is an arrow line view of the AA 'cross section shown in FIG. It is an arrow line view of the BB 'cross section shown in FIG. It is a perspective view of contact X in the state where a part of housing part was removed. It is explanatory drawing of each example which attached and fixed the contact X to the board | substrate BD. It is a schematic block diagram of smart phone SF which mounted contact X. As shown in FIG. It is an arrow line view of the CC 'cross section shown in FIG. It is explanatory drawing of the example which mounted the contact X on the back surface of board | substrate BD. It is explanatory drawing of the process of fitting the board | substrate BD which mounted the contact X in the flame | frame FR. It is explanatory drawing of the process of electrically connecting connection object Ob to the board | substrate BD. It is a perspective view which shows the condition which makes the flame | frame FR approach the protrusion part 3 from the downward direction. It is explanatory drawing regarding the electrical length between connection object and connection object. It is explanatory drawing regarding the structure of the contact which considered impact resistance. It is a schematic block diagram of the smart phone concerning a comparative example. It is an arrow view of the DD 'cross section shown in FIG. It is explanatory drawing regarding the current pathway of a contact. FIG. 18 is a configuration diagram regarding another configuration example of the right wall portion in the contact X. FIG. 10 is a development view of a tip contact portion 31 of a protrusion in a contact X. It is an appearance perspective view of contact Y concerning a 2nd embodiment. FIG. 10 is an external perspective view of the contact Y as viewed from another direction. It is sectional drawing by the lower viewpoint of the contact Y. FIG. It is an arrow line view of the AA 'cross section shown in FIG. It is a graph regarding the measurement result of the contact force P and the contact resistance Q. It is explanatory drawing regarding the condition where a protrusion part is pushed by connection object Ob. It is explanatory drawing regarding the clearance gap between the processus | protrusion of an upper engaging part, and the edge of an upper engaging hole. It is an external appearance perspective view of contact Y1. It is the external appearance perspective view seen from another direction of contact Y1. It is sectional drawing at the time of cut | disconnecting in the surface of the up-down direction center of contact Y1. It is an external appearance perspective view of contact Y1 cut by a field of the up-and-down direction center.

  Embodiments of the present invention will be described below with reference to the drawings, taking the first embodiment and the second embodiment as examples. In addition, regarding the description of the contact according to each embodiment, the upper, lower, right, left, and front and rear directions (directions orthogonal to each other) are as shown in the respective drawings.

1. First Embodiment [Overall Configuration of Contact]
First, the first embodiment will be described. FIGS. 1 and 2 are external perspective views of the contact X viewed from different directions, and FIG. 3 is a cross-sectional view of the contact X when it is cut at the center in the vertical direction. As for the contact X, FIG. 4 is a view taken along the line A-A 'shown in FIG. 3, and FIG. 5 is a view taken along the line B-B' shown in FIG. Further, FIG. 6 shows a perspective view of the contact X in a state in which a part of the housing part 1 is removed.

  The contact X is a projection-biased contact in which the housing portion 1, the plate spring portion 2 (see FIG. 3), and the projection portion 3 are integrally formed by bending a single conductive plate material. It is. In the present embodiment, a metal plate material (for example, a plate material made of stainless steel (SUS301 or the like) as a material) is adopted as the conductive plate material. By integrally forming the housing portion 1, the plate spring portion 2 and the projecting portion 3 with a series of metal plate materials, bonding between these parts becomes unnecessary in the manufacturing process of the contact X, and bonding defects and the like are avoided. , The contact X can be formed efficiently. The contact X is extremely miniaturized so that it can be mounted on a portable communication terminal or the like, the dimension in the left-right direction is about 4 mm, and the plate material is about 0.1 mm.

  With the installation state of the contact X in FIG. 1 as a standard, the configuration of each part will be described with reference to each drawing. In FIG. 1 and FIG. 2, the housing portion 1 includes a lower wall 11 corresponding to the bottom, a rear wall 12 connected to the lower wall 11, a front wall 13, a right wall 14, and an upper wall opposed to the lower wall 11. 15 and is formed in a substantially rectangular parallelepiped housing that accommodates the plate spring portion 2. However, in the case, in addition to the opening SP provided on the right side of the front wall 13, an opening as shown in each drawing is provided at each place. The front wall portion 13 is formed such that the rear side front wall portion 13b is in close contact with the rear side of the front side front wall portion 13a. The right wall 14 includes a front upper right wall 14aU, a front lower right wall 14aD, a rear upper front wall 14bU, and a rear lower front wall 14bD.

  The names of the respective wall portions of the housing portion 1 generally indicate in which direction the plate spring portion 2 is disposed. That is, the lower wall portion 11 is disposed to be the lower wall, the rear wall portion 12 is disposed to be the rear wall, and the front wall portion 13 is disposed to be the front wall The right wall 14 is disposed to be the right wall, and the upper wall 15 is disposed to be the upper wall.

  The rear wall portion 12 is configured such that a portion extending from the edge on the rear side of the lower wall portion 11 is bent upward at the edge at a right angle. The front portion 13a is configured such that a portion (excluding the portion corresponding to the opening SP) extending from the front edge of the lower wall 11 is bent upward at the edge at a right angle. The upper wall portion 15 is configured such that a portion extending from the upper edge of the rear wall portion 12 is bent at a right angle to the front side at the edge. The rear side front wall portion 13 b is configured such that a portion (excluding the portion corresponding to the opening portion SP) extending from the front edge of the upper wall portion 15 is bent perpendicularly downward at the edge .

  In the front upper right wall portion 14aU, a portion of the upper wall portion 15 that extends from the right front side is bent downward at a right angle. The front lower right wall portion 14aD is configured such that a portion of the lower wall portion 11 extending from the right front side is bent upward at a right angle. The rear upper right wall portion 14bU is configured such that a portion extending from the right rear side of the upper wall portion 15 is bent downward at a right angle. The rear lower right wall portion 14bD is configured such that a portion extending from the rear right side of the lower wall portion 11 is bent upward at a right angle. The lower edge of the front upper right wall portion 14aU and the upper edge of the front lower right wall portion 14aD face each other in the vertical direction with a slight gap. The lower edge of the rear upper right wall portion 14bU and the upper edge of the rear lower right wall portion 14bD face each other in the vertical direction with a slight gap.

  A hole 13a1 is provided at a lower position of the center in the left-right direction of the front wall 13a, and a claw 13b1 is provided at a position corresponding to the hole 13a1 in the rear wall 13b. ing. The claw portion 13b1 is provided with a rectangular cut (a substantially U-shaped cut) excluding the lower side at the corresponding position of the rear front wall portion 13b, and a position corresponding to the lower side It is bent and formed so as to rotate slightly forward as a rotation axis. In the front wall 13, the claw 13b1 is located in the hole 13a1, and the upper edge (edge extending laterally) of the claw 13b1 faces the upper edge (edge extending laterally) of the hole 13a1. I am in touch.

  The opening SP formed on the right side of the front wall 13 has a right edge of the front wall 13 (extending vertically), a front edge of the lower wall (extending left and right), and a front lower The front edge of the side right wall portion 14aD (extending vertically), the front edge of the front upper right wall portion 14aU (extending vertically), and the front edge of the upper wall portion 15 (extending left and right And the housing part 1 is opened forward. The surface of the front wall 13 and the opening SP are located on substantially the same plane.

  The plate spring portion 2 is formed to extend from the right end of the rear wall portion 12. As shown in FIG. 3, the plate spring portion 2 is in the form of a band (the width direction coincides with the vertical direction) bent at each portion, and the projecting portion 3 is connected to the end portion.

  The plate spring portion 2 extends from the one end connected to the rear wall portion 12 toward the front while meandering to the left and right. That is, the plate spring portion 2 extends from the right end of the rear wall portion 12 and is formed inside the housing portion 1 so as to meander as seen in the width direction. More specifically, the flat spring portion 2 is formed by connecting the lower turn portion 21, the rear side straight moving portion 22, the upper side turn portion 23, and the front side straight moving portion 24 in order from the right end of the rear wall 12. .

  The lower turn portion 21 is a portion bent so as to make a U-turn while drawing a substantially semicircular shape from the right end of the rear wall portion 12 as viewed in the width direction. The rear side rectilinear portion 22 is a portion rectilinear to the left from the end of the lower turn portion 21 when viewed in the width direction. The upper turn portion 23 is a portion bent so as to make a substantially semicircular U-turn toward the front from the end of the rear side rectilinear portion 22 when viewed in the width direction. The front rectilinear portion 24 is a portion rectilinear to the right from the end of the upper turn portion 23 when viewed in the width direction.

  The front side straight advance portion 24 is disposed immediately behind the front wall portion 13. And the protrusion part 3 is connected with the right side of the front side straight advance part 24. As shown in FIG. The projecting portion 3 is formed to project forward from an opening SP provided in the housing portion 1 and is a portion where contact with a connection target is scheduled.

  As shown in the developed view of FIG. 20, the projecting portion 3 has a rectangular distal end contact portion 31, a left side wall 32L and a right side wall 32R connected to the left and right sides of the rectangular, and the rectangular It consists of an upper guide wall 32U and a lower guide wall 32D connected to upper and lower sides, and is formed in a dome shape which is convex on the front side by bending. The dimensions of the left and right sides of the rectangular tip contact portion 31 are 0.5 mm, the dimensions of the upper and lower sides are 0.6 mm, and the left and right side walls 32L and 32R are connected portions with the contact tip 31 The dimensions are narrowed by 0.1 mm. Thereby, the bending curvature of each of the guide wall portions 32U and 32D can be increased.

The front end contact portion 31 is a portion near the front end in the protruding direction of the protrusion 3 and can contact a connection object located in front of the contact X. The right side wall 32R extends from the right side of the tip contact portion 31 to the rear while curving so as to expand to the right. The rear end of the right side wall 32R is located slightly behind the opening SP, and the front end is free. The left side wall 32L extends from the left side of the tip contact portion 31 to the rear while curving so as to expand leftward. The rear end of the left side wall portion 32L is connected to the right end of the front side rectilinear portion 24 of the plate spring portion 2.
Therefore, the left side wall 32L, the tip contact portion 31 and the right side wall 32R are connected to form an inverted U-shaped protrusion 3. Further, as shown in FIG. 4, the distal end projecting portion 31 has a convex cross section, and the upper side is an arc-shaped distal end upper guide surface 31-1 and the lower side is an arc-shaped distal end lower guide surface 31-2. .

  In FIG. 1, the upper guide wall portion 32U is curved from the upper side of the tip contact portion 31 so as to expand upward along the arc-shaped locus of the tip upper portion guide surface 31-1 through the upper curved guide portion 32U-1. It extends to the back. The rear end of the upper guide wall portion 32U extends rearward beyond the opening SP, and as shown in FIG. 4, an upper convex portion 41U that slightly bulges upward near the rear end is provided.

  In FIG. 2, the lower guide wall 32D passes from the lower side of the tip contact portion 31 through the lower curved guide portion 32D-1 which is curved so as to expand downward along the arc-shaped locus of the lower tip end guide surface 31-2. It extends to the back. The rear end of the lower guide wall portion 32D extends to the rear beyond the opening SP, and as shown in FIG. 4, the lower convex portion 41D is provided so as to slightly expand downward near the rear end. There is. The surfaces of the upper and lower guide wall portions 32U and 32D, the left and right side wall portions 32L and 32R, and the tip contact portion 31 are formed as a series of curved surfaces (curved surfaces that are convex on the front side).

  Further, in FIG. 3, an upper guide 42 </ b> U and a lower guide 42 </ b> D for guiding the movement of the front rectilinear portion 24 are connected to the slightly rightward portion of the front rectilinear portion 24 in the plate spring portion 2. As shown in FIGS. 5 and 6, the upper guide portion 42U is formed by bending a portion extending upward from the upper edge of the front rectilinear portion 24 rearward at the edge. Further, a portion of the lower guide portion 42D, which extends downward from the lower edge of the front rectilinear portion 24, is formed by being bent backward at the edge.

  As described above, in the initial state (in which the protrusion 3 is not pushed backward, the same applies hereinafter), the protrusion 3 has a portion closer to the front side protruding forward from the opening SP. It is the largest. Further, the projecting portion 3 is urged forward by the plate spring portion 2. When the protrusion 3 is pushed backward by the connection target, the protrusion 3 moves toward the inside of the housing 1 against the bias of the plate spring 2 by that amount. In a state where the tip contact portion 31 is pushed backward by the connection target, the tip contact portion 31 is in close contact with the connection target due to the biasing of the plate spring portion 2, and both stable contact states are obtained.

  The portion from the rear side rectilinear portion 22 to the front side rectilinear portion 24 forms a U-shaped portion which is substantially U-shaped as viewed in the vertical direction (width direction). In the U-shaped portion, the front side straight moving portion 24 and the rear side straight moving portion 22 parallel to the rear side are connected at the left end portions to form a substantially U shape. The flat spring portion 2 has a meandering shape including such a U-shaped portion, so it has a more stable elasticity than, for example, a shape such as a cantilever, and exerts an appropriate contact force. The movement range (working area) of the protrusion 3 to be made can be widely taken.

  Further, as shown in FIG. 3, the right end portion of the rear side front wall portion 13 b is a support portion (support piece) 13 b 2 which is bent rearward. In the initial state, the front side rectilinear portion 24 is configured to push the right side edge of the support portion 13b2 forward by the elastic force of the plate spring portion 2. In other words, in the initial state, the support portion 13 b 2 supports the front rectilinear portion 24 against the bias of the plate spring portion 2. As the bending depth (bending angle) of the support portion 13b2 is increased, the right side edge of the support portion 13b2 moves rearward, so the position of the protrusion 3 in the initial state becomes the rear, and the support portion 13b2 is the front rectilinear portion 24. The load received from will increase. By using this principle, for example, by changing the bending depth of the support 13b2 at the time of manufacturing the contact X, the amount of protrusion of the protrusion 3 in the initial state, or in the initial state, the support 13b2 It is possible to adjust the load received.

  In addition, the housing portion 1 accommodates the plate spring portion 2 and plays a role of protecting the object from object collision and foreign matter adhesion from the outside. The right end (right turn portion 21) of the plate spring portion 2 is accommodated on the left side of the rear upper front wall portion 14bU and the rear lower front wall portion 14bD, and is effectively protected from an object collision or the like. The left end (left turn portion 23) of the plate spring portion 2 does not extend outside the end face of the left opening of the housing portion 1, and is effectively protected from an object collision or the like. In order to make the protection more sufficient, the housing portion 1 may have a wall portion also on the left side of the plate spring portion 2. The contact X has the configuration described above, and functions as a component for electrically connecting the connection target in contact with the tip contact portion 31 to the connection target.

[Use form of contact]
Next, the usage of the contact X will be described. The contact X is provided, for example, in an electric device such as a smartphone (portable communication device), and can electrically connect components such as a circuit board. Hereinafter, as an example of usage of the contact X, the contact X is attached and fixed to the substrate BD (one form of connection target) incorporated in the smartphone SF, and the contact X is a frame FR of the smartphone SF (one form of connection target) Are electrically connected to the substrate BD.

  FIG. 7 shows each example in which the contact X is attached and fixed to the substrate BD. In each of the lower wall portion 11, the upper wall portion 15, and the rear wall portion 12, the contact X is provided with flat regions on the outer surface side, and these regions function as a mounting surface to the substrate BD. For example, in the lower wall portion 11, three regions (S1, S2 and S3) shown in FIG. 2 function as mounting surfaces. Such a mounting surface is adhesively fixed to the surface of the substrate BD by, for example, soldering, and can be electrically connected to a circuit pattern or the like on the substrate BD side.

  7 (A) shows an example in which the lower wall portion 11 is connected and fixed to the substrate BD, FIG. 7 (B) shows an example in which the upper wall portion 15 is connected and fixed to the substrate BD, and FIG. 7 shows an example in which the back wall 12 is connected and fixed to the substrate BD. As described above, the contact X can be attached to the substrate BD in various forms according to the situation, and is a highly versatile component.

  FIG. 8 is a schematic configuration diagram of the smartphone SF on which the contact X is mounted, and FIG. 9 is an arrow view of a cross section C-C 'shown in FIG. In FIG. 8, for the sake of simplification, the display of components other than the frame FR, the substrate BD, and the contact X is omitted.

  The contacts X are mounted (attached and fixed) in the vicinity of both ends in the width direction on the surface of the substrate BD (upper surface in FIG. 9) such that the protrusions 3 protrude outward beyond the edges in the width direction of the substrate BD. ing. Further, the frame FR forms a side wall extending around the entire circumference of the smartphone SF, and the substrate BD is fitted inside the frame FR. By fitting the substrate BD in this manner, the protrusion 3 of the contact X can be connected to the frame FR.

  The projecting portion 3 is in a state of being pushed by the inner wall of the frame FR. An appropriate contact force is generated between the protrusion 3 and the inner wall of the frame FR by the action of the plate spring 2, and both stable contacts are obtained. The frame FR can function, for example, as an antenna, in which case the circuit on the substrate BD is electrically connected to the antenna by the action of the contact X.

  Further, in a mode in which the circuit on the substrate BD is electrically connected to the frame FR using the contact X (hereinafter referred to as “the present embodiment”), a region indicated by a broken line in FIG. 9 (lower side of the substrate BD) It is also possible to secure space. Therefore, in the present embodiment, circuit components and the like can be arranged more sufficiently on the lower surface of the substrate BD, and for example, compared to the form shown in FIGS. 16 and 17 (hereinafter referred to as “comparative example”), Is advantageous in terms of component mounting.

  Here, the above comparative example will be described. 16 is a schematic configuration diagram of a smartphone according to a comparative example, and FIG. 17 is an arrow view of a cross section D-D 'shown in FIG. In the comparative example, the substrate BDx (corresponding to the substrate BD in the present embodiment) and the frame FRx (corresponding to the frame FR in the present embodiment) are connected using the metallic screw SC. Even in the comparative example, although it is possible to electrically connect the substrate BDx to the frame FRx, a hole for a screw is required in the substrate BDx, and a circuit component is provided in the area shown by the broken line in FIG. Etc. can not be arranged. That is, although such a dead space occurs in the substrate BDx in the comparative example, this dead space does not occur in the present embodiment, which is advantageous in terms of component mounting on the substrate BD.

  Further, in the comparative example, it is necessary to form a tapped hole for screwing in the frame FRx. On the other hand, in the present embodiment, such a tap hole is unnecessary, so it is possible to suppress the production cost of the frame FR by that amount. Further, in the comparative example, the cost of procuring the screw SC, the operation cost of screwing, and the corresponding cost for preventing connection failure due to the loosening of the screw SC are required. In the present embodiment, such a cost is unnecessary, and basically, the substrate BD on which the contact X is mounted may be fitted in the frame FR, so that the manufacturing cost, the quality control cost and the like of the smartphone SF can be suppressed. It is possible.

  Further, as shown in FIG. 10, it is also possible to mount the contact X on the back surface (lower surface in FIG. 10) of the substrate BD and electrically connect the substrate BD to the frame FR. In this case, a sufficient space can be secured on the surface of the substrate BD, which is very advantageous in terms of component mounting on the top surface of the substrate BD.

  Next, a process of fitting the substrate BD mounted with the contacts X into the frame FR will be described with reference to FIG. As shown in FIG. 11, the upper inner side of the frame FR is chamfered to form an inclined surface FR1. The inclined surface FR1 is formed to have an inclination of about 45 ° with respect to a plane parallel to the surface of the substrate BD.

  FIGS. 11 (A-1) to 11 (A-3) show the appearance of the process of fitting the substrate BD with the contacts X mounted on the upper surface into the frame FR. In this step, the frame FR is to be connected to the contact X in a side approach configuration. In the condition before fitting shown in FIG. 11 (A-1), the protrusion 3 is not yet pressed by the frame FR, and the protrusion 3 is in the initial state in which the protrusion 3 is most protruded. Further, the lower guide wall portion 32D is located near the top of the inclined surface FR1.

  When moving the substrate BD from this state to advance the fitting into the frame FR, as shown in FIG. 11 (A-2), the lower guide wall 32D slides on the inclined surface FR1, The projecting portion 3 retreats by receiving a rearward force from the inclined surface FR1. In this situation, the lower guide wall 32D can slide smoothly on the inclined surface FR1 because the portion in contact with the inclined surface FR1 of the lower guide wall 32D is curved, and damage to the inclined surface FR1 can also be suppressed. . Finally, as shown in FIG. 11 (A-3), the substrate BD is pushed to the back of the frame FR and completely fitted, and the tip contact portion 31 contacts the inner wall FR2 of the frame FR.

  11 (B-1) to 11 (B-3) show the appearance of the process of fitting the substrate BD on the lower surface of which the contact X is mounted into the frame FR. Also in this step, the frame FR is to be connected to the contact X in a side approach configuration. In the condition before the fitting shown in FIG. 11 (B-1), the protrusion 3 is not yet pressed by the frame FR, and the protrusion 3 is in the initial state in which the protrusion 3 is most protruded. In addition, the upper guide wall portion 32U is located in the vicinity of the top of the inclined surface FR1.

  When moving the substrate BD from this state to advance the fitting into the frame FR, as shown in FIG. 11 (B-2), the upper guide wall 32U slides on the inclined surface FR1, The projecting portion 3 retreats by receiving a rearward force from the inclined surface FR1. In this situation, the upper guide wall 32U can slide smoothly on the inclined surface FR1 because the portion in contact with the inclined surface FR1 of the upper guide wall 32U is curved, and damage to the inclined surface FR1 can also be suppressed. . Finally, as shown in FIG. 11 (B-3), the substrate BD is pushed to the back of the frame FR and completely fitted, and the tip contact portion 31 contacts the inner wall FR2 of the frame FR.

  As described above, since the lower guide wall 32D and the upper guide wall 32U are curved and rounded, the contact X is inclined from the side of the protrusion 3 (the direction orthogonal to the protrusion direction of the protrusion 3). The protrusion 3 can be properly retracted by being pushed by the FR 1. In the contact X, since the left side wall 32L and the right side wall 32R form a series of inverted U-shaped contact parts with the tip contact part 31, the lower guide wall 32D and the upper guide wall 32U described above It is possible to exert the same function. That is, the contact X can also retract the projection 3 appropriately such that the left side wall 32L and the right side wall 32R are pushed from the left side or the right side to the inclined surface FR1.

  Further, in the contact X, since the side wall portions and the guide wall portions of the projecting portion 3 are curved, it is not limited to the case of being pushed by the inclined surface as described above, and connection targets of various shapes from the side of the projecting portion 3 Even when pressed, the protrusion 3 can be properly retracted. Therefore, the contact X is a highly versatile component that can correspond to various connection targets. This point will be specifically described with reference to the example of FIG.

  FIG. 12 shows a state of a process of bringing a rectangular parallelepiped connection object Ob close to the substrate BD on which the contacts X are mounted in various forms and electrically connecting the connection object Ob to the substrate BD.

  FIG. 12A shows that the connection target Ob is brought into contact with the protrusion 3 from the lower side of the contact X. In this case, first, the corner portion of the connection target Ob (a portion surrounded by a dotted line in this figure) abuts on the lower guide wall portion 32D. However, since the lower guide wall portion 32D is curved, this corner portion does not get caught on the lower guide wall portion 32D, and the connection object Ob can move forward while pushing the protrusion 3 smoothly.

  That is, the lower guide wall 32D extends from the lower side of the tip contact portion 31 narrower than the plate width of the left and right side wall portions 32L and 32R as shown in FIG. The lower curved guide portion 32D-1 is formed by being bent along the locus of the arc-shaped lower guide surface 31-2. As clearly shown in FIG. 2, the lower curved guide portion 32D is equivalent to the distance between the lower side of the tip contact portion 31 and the lower wall portion 11 wider than the distance between the lower wall portion 11 and the side surfaces of the side wall portions 32L and 32R. It is possible to increase the curvature dimension of -1.

For this reason, the arc-shaped portion formed by the lower guide surface 31-2 and the lower curved guide portion 32D-1 of the tip contact portion 31 is outside the lower arc-shaped portions of the side wall portions 32L and 32R having an arc-shaped cross section. It is spreading to the side (see Figure 2).
Therefore, even if the corner portion of the connection object Ob is in a positional relationship in which it abuts on the side surface portions of the side wall portions 32L and 32R, the corner portion first is the lower curve guide portion 32D-1 located below (outside) the side portion. The lower guide surface 31-2 moves along the curved surface to the lower guide surface 31-2 and smoothly contacts the distal end portion of the distal end contact portion 31.

  That is, the abutting external force of the corner portion applied to the lower curve guide portion 32D-1 is decomposed into the tangential direction of the lower curve guide portion 32D-1 and the normal direction. The component force in the normal direction can be divided into a force for pushing the protrusion 3 and a force for positioning in the width direction. Among these, the force for positioning in the width direction is absorbed and relieved by the action of the upper guide wall portion 32U described later, so that the protrusion does not greatly displace in the width direction, and the force for pushing the contact portion 3 Causes the contact portion 3 to retract into the housing 1. As a result, the connection object Ob can be positioned at the top of the tip contact portion 31 and can be stably contact-connected by the elastic force of the spring portion 2. In this respect, it differs greatly from the conventional protrusion-biased contact.

In addition, when the said corner | angular part contact | abuts to lower curve guide part 32D-1, the force (force to displace to the width direction) which pushes up the protrusion part 3 acts. In this case, since the upper guide wall 32U is elastically pressed against the inner surface of the upper wall 15 as shown in FIG. 4, the upper guide wall 32U is elastically deformed by the elastic force of the upper guide wall 32U. The displacement in the upward direction is absorbed and relieved, and the deformation of the protrusion 3, the left and right side wall portions 32L, 32R, etc. is prevented. If the upper guide wall portion 32U is not elastically pressed against the inner surface of the upper wall portion 15, the contact portion 3 and the like are displaced due to the upward force applied to the projecting portion 3, causing deformation.
In other words, the upper and lower guide wall portions 32U and 32D play a role of smoothly guiding the connection object Ob to the distal end contact portion 31 and a role of a shock absorbing material against an external force applied to the distal end contact portion 31. In addition, the role of the conductive path can be given.

FIG. 12B shows that the connection object Ob is brought into contact with the protrusion 3 from the upper side of the contact X. In this case, first, the corner portion of the connection target Ob (a portion surrounded by a dotted line in this figure) abuts on the upper guide wall portion 32U. However, since the upper guide wall portion 32U is curved, this corner portion does not get caught on the upper guide wall portion 32U, and the connection object Ob can be advanced while smoothly pushing the protrusion 3 away.
In the above case, the upper guide wall 32U plays the same role as the lower guide wall 32D, but the description is omitted.

  FIG. 12C shows that the connection target Ob is brought into contact with the protrusion 3 from the right side of the contact X. In this case, first, the corner portion of the connection object Ob (the portion surrounded by the dotted line in this figure) abuts on the right side wall portion 32R. However, since the right side wall portion 32R is curved, this corner portion does not get caught on the right side wall portion 32R, and the connection object Ob can be pushed forward while smoothly pushing out the protruding portion 3.

  FIG. 12D shows that the connection object Ob is brought into contact with the protrusion 3 from the left side of the contact X. In this case, first, the corner portion of the connection object Ob (the portion surrounded by the dotted line in this figure) abuts on the left side wall portion 32L. However, since the left side wall portion 32L is curved, this corner portion does not get caught on the left side wall portion 32L, and the connection object Ob can advance while smoothly pushing the protruding portion 3 away.

  As described above, even if the connection target Ob approaches the projection 3 from any of the lateral directions (upper, lower, left, and right) of the projection 3, the connection target Ob does not get caught in the projection 3, and the projection 3 is not You can proceed to push it out smoothly. Finally, it is possible to bring the tip contact portion 31 of the protrusion 3 into contact with the connection target Ob. Note that, as shown in FIG. 12E, even when the connection target Ob is made to approach the projection 3 from the front, the tip contact portion 31 of the projection 3 can be brought into contact with the connection target Ob.

[Hook mechanism for opening prevention]
As described above, the front side front wall 13a is provided with the hole 13a1, and the rear front side wall 13b is provided with the claw 13b1 (see FIG. 1 and the like). Further, in the front wall 13, the claw 13b1 is located in the hole 13a1, and the upper edge of the claw 13b1 is in contact with the upper edge of the hole 13a1. The claw portion 13b1 functions as a hook mechanism for preventing the opening (the defect due to the deformation) of the housing portion 1 due to the external force. This point will be described in detail with reference to FIG.

  FIG. 13 is a perspective view showing a state in which the frame FR is caused to approach the protrusion 3 from below (a state similar to FIGS. 11 (A-1) to (A-3)). When the frame FR moves upward as shown by a dotted arrow in FIG. 13, the projecting portion 3 receives an upward force from the frame FR while retreating. Due to this force, as shown by a colored arrow in FIG. 13, the upper wall portion 15 receives an upward force (a force in the direction in which the housing portion 1 opens).

  However, even in such a situation, in the present embodiment, the claws 13b1 are hooked on the holes 13a1, whereby the upper and lower positional deviations between the front front wall 13a and the rear front wall 13b (upper wall 15 and lower The positional deviation in the direction in which the wall portion 11 separates is suppressed, and the opening of the housing portion 1 (failure due to deformation) is prevented. As described above, the projections provided on one side (the claws 13b1 provided on the rear side front wall 13b) of the front side front wall 13a and the rear side front wall 13b are formed on the other side so that the positional deviation between the upper and lower sides is suppressed. It is formed to be hooked on (the front side front wall portion 13a). Such a protrusion may be provided on either of the front side wall portion 13a and the rear side front wall portion 13b.

  The housing portion 1 has a front wall portion 13 and covers the plate spring portion 2 from front to back and from top to bottom, with predetermined portions of the metal plate material (front side front wall 13a, lower wall 11, rear wall 12, upper wall) 15 and a portion where the rear side front wall portion 13b is connected in order) are formed so as to form a tubular shape. Further, in the front wall portion 13, a front side front wall portion 13a at one end side of the predetermined portion and a rear side front wall portion 13b at the other end side of the predetermined portion overlap in the front and rear direction. Furthermore, the front side wall portion 13a and the rear side front wall portion 13b are formed such that a projection (a claw portion 13b1) provided on one side is hooked on the other side so as to suppress positional deviation in the vertical direction. Therefore, it is possible to prevent the opening of the housing 1 due to an external force as much as possible.

[Role of guide part]
Further, as described above, the contact X is slightly provided with the upper guide wall 32U and the lower guide wall 32D having the upper side convex portion 41U, the lower side convex portion 41D, which are in contact with the inner wall of the housing portion 1 A pair of upper guide portions 42U and lower guide portions 42D are provided spaced apart in the left direction (see FIGS. 4 to 6). These convex portions and guides play a role of suppressing positional deviation (movement such as rotating in the vertical direction) of the plate spring portion 2 and the protruding portion 3.

  More specifically, when the protrusion 3 is pushed back by the connection target etc., the upper convex portion 41U and the upper guide portion 42U of the upper guide wall 32U slide inside the upper wall 15, and lower The lower convex portion 41D and the lower guide portion 42D of the guide wall portion 32D slide inside the lower wall portion 11. The inner side of the upper wall portion 15 and the inner side of the lower wall portion 11 correspond to the inner wall of the housing portion 1. Therefore, for example, as shown in FIG. 13, even in the case where the projecting portion 3 recedes while receiving the upward force from the frame FR, the respective guide wall portions (32U, 32D) and the respective guide portions (42U, 42D) By being in contact with the inner wall of the housing portion 1, positional deviation of the plate spring portion 2 and the projecting portion 3 is suppressed.

  Even when the projecting portion 3 is retracted while receiving a downward force from the frame FR or the like, the positional deviation of the plate spring portion 2 and the projecting portion 3 is suppressed by the same principle. By thus suppressing the positional deviation, it is possible to stabilize the operation of the contact X and to suppress the quality deterioration of the contact X.

  Further, when the upper and lower convex portions (41U, 41D) contact the housing portion 1, it is possible to shorten the electrical length between the connection object in contact with the projecting portion 3 and the connection object in contact with the housing portion 1. It has become. This point will be described below with reference to FIG.

  14 (a) shows the lower wall 11 fixed to the substrate BD, FIG. 14 (b) shows the upper wall 15 fixed to the substrate BD, and FIG. 14 (c) shows the back wall 12 Is fixed to the substrate BD. Further, a thick line in FIG. 14 indicates a current path from the protruding portion 3 to which contact of the connection target is planned to the substrate BD.

  As shown in the drawing, the contact X is interposed between the upper guide wall 32U or the lower guide wall 32D, whichever of the lower wall 11, the upper wall 15, and the rear wall 12 is fixed to the substrate BD. As a result, the current path is very short. For example, in the state where the back wall 12 is fixed to the substrate BD, the current path is sufficiently shortened in the case of the present embodiment as compared with the case where the current path passes through the plate spring portion 2 as shown by thick lines in FIG. 14 (c)). When the current path is thus shortened (in other words, a short circuit conductive path is formed), it is easy to suppress the electrical resistance by that amount, and it is advantageous in transmission of high frequency signals and the like.

  In addition, as shown in FIGS. 1, 2 and 4, when the protrusion 3 is pushed from the front, the lower guide wall 32D in the lower wall 11 is slid upward at the location where the lower convex 41D slides. Shallow depression 11a is provided. Therefore, it is possible to more reliably contact the lower convex portion 41D of the lower guide wall portion 32D with the lower wall portion 11 and to stabilize both electrical contacts. Furthermore, a shallow recess 15a is provided at a position where the upper convex portion 41U of the upper guide wall portion 32U slides in the upper wall portion 15 when the projecting portion 3 is pushed from the front. Therefore, it is possible to more reliably contact the upper convex portion 41U of the upper one guide wall portion 32U with the upper wall portion 15 and to stabilize both electrical contacts.

  These depressions (11a, 15a) are opposed so as to substantially overlap in the vertical direction, and the interval between the inner walls in the vertical direction of the housing portion 1 is narrowed. This interval is slightly smaller than the distance between the tips of the convex portions 41D and 41U (the distance in the vertical direction). Further, these recesses (11a, 15a) can be formed by a simple pressing process or the like on a plate material.

  As shown in FIG. 4, in the vicinity of the initial state where the protrusion 3 is hardly pressed from the front, the convex portions 41D and 41U are located on the front side of the respective recesses (11a, 15a). In this state, the tips of the respective convex portions are only lightly pressed against the inner wall of the housing portion 1. And if the protrusion part 3 is pushed by predetermined amount from the front, these convex parts will rush to the position pinched by each hollow (11a, 15a). In this state, by using the elastic force of each of the guide wall portions (32U, 32D), the tip of each of the convex portions 41D, 41U generates a predetermined contact force with the inner wall of the housing portion 1 and is crimped to the inner wall doing.

Here, assuming that the respective convex portions 41D and 41U are located between the respective depressions (11a and 15a) even in the vicinity of the initial state, for example, after the protrusion 3 is pushed backward and sufficiently moved When the pressure is released, the elastic force of the plate spring portion 2 is zero or very weak in the vicinity of the initial state, so that the protrusion 3 is returned to the initial state by the friction between the respective convex portions and the respective depressions (11a, 15a). There is a possibility that there is not. In this respect, in the present embodiment, since the friction hardly occurs near the initial state, it is possible to more reliably return the protrusion 3 to the initial state. In the vicinity of the initial state of the present embodiment, the contact between the upper and lower convex portions (41U, 41D) and the inner wall of the housing 1 is reduced, but the presence of the guide wall portions 32U, 32D And, the positional displacement of the projecting portion 3 and the like is suppressed, and a restoring force is applied to restore the original state. The upper and lower guide portions (42 U, 42 D) contact the inner wall of the housing portion 1, thereby promoting prevention of positional deviation of the plate spring portion 2 and the protruding portion 3.

[About impact resistance]
The contact X is devised in the configuration of the housing portion 1 and has excellent characteristics in terms of impact resistance. As described above, the lower edge of the front upper right wall portion 14aU and the upper edge of the front lower right wall portion 14aD face each other in the vertical direction with a slight gap, and the rear upper right wall portion 14bU The lower edge and the upper edge of the rear lower right wall 14bD face each other in the vertical direction with a slight gap. Therefore, for example, even when foreign matter collides with the upper wall portion 15 from above, each right wall portion (14aU, 14aD, 14bU, 14bD) receives the force and functions so as to prevent the housing portion 1 from being crushed. .

  Further, as shown in FIG. 15, if a portion β of the lower side edge of the rear side front wall portion 13b is in contact with or in proximity to a portion α of the front side edge of the lower wall portion 11, The rear side front wall portion 13b is configured to receive an impact applied to the wall portion 15, and the above-described crushing of the housing portion 1 can be more sufficiently prevented. Furthermore, since the front wall portion 13 has a double structure of the front side wall portion 13a and the rear side front wall portion 13b, for example, even when foreign matter collides with the front wall portion 13 from the front, the front wall portion The deflection of 13 is less likely to occur.

[Another configuration example of the right wall portion]
FIG. 19 is a configuration diagram of another configuration example of the right wall portion 14 in the contact X. In FIG. The lower side of FIG. 19 is an enlarged view of the vicinity of the front right wall portion RW1. Here, the front half of the front right wall portion RW1 is cut away and displayed to facilitate understanding of the configuration. There is. The right wall 14 shown in FIG. 19 has a front right right wall 14cU instead of the front upper right wall 14aU shown in FIG. 1 etc., and a front left right wall 14cD instead of the front lower right wall 14aD. A rear right right wall 14dU is provided instead of the rear upper right wall 14bU, and a rear left right wall 14dD is provided instead of the rear lower right wall 14bD. The front right right wall 14cU and the rear right right wall 14dU are connected to the upper wall 15, and the front left right wall 14cD and the rear left right wall 14dD are connected to the lower wall 11. There is.

  The front right side right wall portion 14cU and the front left side right wall portion 14cD overlap on the left and right to form a front right wall portion RW1. The front right side wall portion 14cU is in close contact with the right side of the front left side wall portion 14cD. Further, the rear right-right wall portion 14dU and the rear-left right wall portion 14dD overlap on the left and right to form a rear right wall portion RW2. The rear right side wall portion 14dU is in close contact with the right side of the rear left side wall portion 14dD.

  In the front right wall portion RW1, the front right side wall portion 14cU is formed with a cut and bent piece 14cU1 cut and bent leftward, and the front left right wall portion 14cD is cut leftward and bent. A cut and bent piece 14cD1 is formed. These cut and bent pieces 14cU1 and 14cD1 (pieces formed by bending the upper portion slightly leftward around the lower longitudinal shaft) are formed at substantially overlapping positions in the lateral direction. It is done. Thereby, the upper end portion of the cutting and bending piece 14cU1 protruding leftward from the front right-hand side wall portion 14cU and the recess formed in the front left and right wall portion 14cD (the depression formed by bending the cutting and bending piece 14cD1) The upper edge faces the upper and lower direction (see the portion of position H shown in FIG. 19).

  Thus, in the front right wall portion RW1, the front right right wall portion 14cU and the front left right wall portion 14dU are controlled so that the positional deviation in the direction in which the upper wall portion 15 and the lower wall portion 11 are separated is suppressed. The cutting and bending piece 14cU1 is formed so as to be hooked on the front left side wall portion 14dU (the projection provided on one side is hooked on the other). Therefore, it is possible to prevent as much as possible the opening (problem due to the deformation) of the housing 1 due to the external force. In addition, such a configuration is also provided in the rear right wall portion RW2, and it is possible to obtain the same effect as the front right wall portion RW1.

[Others]
As described above, the contact X according to the present embodiment includes a retractable projection 3 formed to project forward using a conductive plate and a plate spring that biases the projection 3 forward. And the connection target in contact with the tip contact portion 31 of the protrusion 3 is electrically connected to the connection target. In the projecting portion 3, a plurality of guide wall portions (32U, 32D) whose left and right plate portions are exposed in the four side directions and left and right wall portions (32L, 32R) respectively diverge from the vicinity of the tip contact portion 31 It is stretched to the side.

  Therefore, the contact X is a protrusion-biased type, and the side walls of the protrusion cover many side directions (four directions in the top, bottom, left, and right in this embodiment), but at the manufacturing cost and weight reduction. It is advantageous.

  That is, since each guide wall and each side wall (32U, 32D, 32L, 32R) are branched from the vicinity of the tip contact portion 31 and extend rearward, they are easily formed by bending the conductive plate material. It is possible. Further, even in the case where all or a part of each guide wall and each side wall (32U, 32D, 32L, 32R) are formed by a method according to drawing, each side wall is separated. Problems such as reduction in thickness are less likely to occur than in the case where drawing is performed so as to provide a dome-shaped depression on a flat plate. For example, in the case of the present embodiment, in order to form the tip contact portion 31 in a rounded shape, each guide wall portion and each side wall portion are formed while forming the vicinity of the front end of the projecting portion 3 according to a drawing process. 32U, 32D, 32L, 32R) can be formed by bending. Therefore, in the present embodiment, drawing processing with relatively high accuracy is not required, and the degree of freedom in material selection is hardly restricted because a metal plate material or the like suitable for drawing processing is adopted.

  Further, in the present embodiment, as compared with the case where side walls are provided so as to cover all side directions (the projecting portion is dome-shaped), the guide walls and side walls are efficiently covered so as to cover only the necessary four directions. Since it is provided, the amount of guide walls and side walls is reduced accordingly, which is advantageous in weight reduction and the like. Furthermore, in the present embodiment, each guide wall and each side wall (32U, 32D, 32L, and 32R) are branched and extended from the vicinity of the tip contact portion 31, respectively. It is easy to adjust the shape. In the present embodiment, a plurality of side wall portions exposed in four side directions are provided, but a plurality of side wall portions exposed in three directions or five or more side directions may be provided. .

  In addition, in the developed view of the tip contact portion 31 shown in FIG. 20, even if it is T-shaped in which the right side wall portion 32R is omitted, it can be used as a front approaching form and a side approaching form. Similarly, in the T-shaped one of the upper and lower guide wall portions 32U and 32D, only the curved guide portion may be used. In this case, it is used in a form in which the contact object is made to approach laterally from the direction in which only the curved guide portion is provided.

  Further, the guide wall portions and the side wall portions (32U, 32D, 32L, 32R) extend rearward while swelling outward from the vicinity of the tip contact portion 31 in the lateral direction. That is, the positions of the guide wall portions and the side wall portions (32U, 32D, 32L, 32R) are gradually inward in the lateral direction as they move forward. Therefore, as described with reference to FIG. 12, it is possible to prevent the connection target from being caught by each side wall portion in the side approach configuration, and to smoothly guide the connection target to the front of the tip contact portion 31. In the present embodiment, in particular, the surfaces of the guide wall portions, the side wall portions (32U, 32D, 32L, 32R) and the tip contact portion 31 are formed as a series of curved surfaces that are convex toward the front side. It is possible in the approach configuration to lead the connection object very smoothly in front of the tip contact 31.

  A contact X according to the present embodiment is a contact formed by bending a single conductive plate, and includes a housing portion 1 having a front wall 13, a rear wall 12, an upper wall 15, and a lower wall 11. And an arc-shaped (generally arc-shaped in the case of this embodiment) protruding portion 3 which protrudes from the opening of the front wall portion 13 and which is convex on the front side when viewed in the vertical direction contacting the contact object (connection object) A member forming at least a part of a conductive path from the protrusion 3, wherein a free end is connected to the protrusion 3 and biases the protrusion 3 toward the contact object. And a unit 2. Furthermore, the upper and lower guide wall portions (upper guide wall portion 32U and lower guide wall portion 32D) are branched in the upper and lower side directions, respectively, and the protruding portion 3 extends rearward while expanding outward in the side direction. In addition, the free ends of the upper and lower guide wall portions elastically and slidably contact the inner surfaces of the upper wall portion 15 and the lower wall portion 11 of the housing portion 1 to form a short circuit conductive path.

  With this configuration, the contact X is a projection-biased type and can cope with connection in the side approach form in each of the upper, lower, left, and right sides, but in the side approach form, the connection target is less likely to be caught on each side wall It is possible to stably form a conductive path which shortens the electrical length. Moreover, in this embodiment, the surface of the protrusion 3 and the surface of each of the side wall pieces are formed as a series of curved surfaces that are convex toward the front side. Therefore, in the side approach configuration, it is possible to guide the connection object very smoothly in front of the front end of the protrusion 3.

  The contact X described above is a contact formed by bending a sheet of conductive plate material, and is housed in a housing, a protruding portion which protrudes from an opening of the housing and contacts an object to be connected, and the housing. A member comprising at least a part of a conductive path from the protrusion, the free end side of which is connected to the protrusion and a spring for biasing the protrusion in the protrusion direction The guide side wall portion branches in each width direction of the protrusion and expands in the width direction outward while extending in the opposite direction to the protruding direction, and at least one free end portion of the guide side wall portion is the housing It is configured to be in sliding contact with the inner surface of the wall portion.

  According to this configuration, it is possible to connect in the lateral approach form also in the width direction of the projecting portion while being a bending type projecting portion-biased contact formed by bending the conductive plate material. The versatility is greatly improved. In addition, even if other parts accidentally hit the side of the protrusion, the guide side wall portion protects the other portion, so that a contact resistant to deformation and damage can be obtained.

  Furthermore, at least one of the guide side wall portions is in elastic sliding contact with the inner wall surface of the housing, so that the guide side wall portion can be used as a conductive path with a short electrical length.

  More specifically, the surface of the protrusion and the surface of each of the guide side wall portions may be formed as a series of curved surfaces that are convex toward the front side. According to this configuration, in the side approach configuration, it is possible to guide the connection object very smoothly in front of the front end of the protrusion.

  More specifically, one end of the protrusion may be connected to the plate spring portion. According to this configuration, it is possible to efficiently form the projecting portion and the plate spring portion by a series of metal plate materials.

  More specifically, in the above configuration, the projecting direction is the front, and the front wall, the rear wall, the upper wall, and the lower wall of the housing have a tubular shape of the predetermined portion of the conductive plate. The front wall portion is formed by bending so that the front wall portion on the one end side of the predetermined portion and the rear side front wall portion on the other end side of the predetermined portion overlap in the front-rear direction. In the front side front wall portion and the rear side front wall portion, a protrusion provided on one side is formed on the other side so that positional deviation in a direction in which the upper wall portion and the lower wall portion are separated is suppressed. It may be configured to be hooked. According to this configuration, it is possible to prevent, as much as possible, the opening (the problem due to the deformation) of the housing portion due to the external force.

  More specifically, as the above configuration, the housing has a specific wall portion which is a left or right side wall, and the specific wall portion is a first specific wall portion connected to the upper wall portion of the conductive plate material. And a second specified wall connected to the lower wall of the conductive plate is formed to overlap left and right, and the first specified wall and the second specified wall are the upper wall and the lower wall. A projection provided on one side may be formed to be hooked on the other so as to suppress positional deviation in the direction in which the parts are separated. According to this configuration, it is possible to prevent, as much as possible, the opening (the problem due to the deformation) of the housing portion due to the external force.

2. Second Embodiment Next, a second embodiment will be described. In the following description, emphasis will be placed on the description of matters different from the first embodiment, and the descriptions in common with the first embodiment may be omitted. In addition, elements equivalent to those in the first embodiment may be described with the same reference numerals.

  FIGS. 21 and 22 are external perspective views of the contact Y according to the second embodiment viewed from different directions, and FIG. 23 is a cross-sectional view according to the lower viewpoint when the contact Y is cut at the center in the vertical direction It is. Moreover, the arrow view of the AA 'cross section shown in FIG. 23 about the contact Y is shown in FIG.

  Compared to the contact X according to the first embodiment, the contact Y has differences as shown in the above-mentioned drawings in terms of specific shapes, dimensions, etc. There is. The housing portion 1 of the contact Y has a dimension of about 7.5 mm in the left-right direction, a dimension of about 3 mm in the vertical direction, and a dimension of about 3.8 mm in the front-rear direction. In the initial state, the amount of forward protrusion of the protrusion 3 is about 2.1 mm, and the dimension in the front-rear direction of the contact Y at this time is about 5.9 mm.

  Further, in the contact Y, as shown in FIG. 23, the rear side rectilinear portion 22 of the plate spring portion 2 extends in the diagonally left front direction from the lower turn portion 21 toward the upper turn 23. The contact Y is suitably used for various on-vehicle electronic devices such as a car audio system and a car navigation system, and can be used for various applications requiring an electrical connection.

  The right wall 14 of the contact Y is constituted by the right side wall 14a and the left side wall 14b. The right side right wall portion 14 a is connected to the front end position of the right end of the upper wall portion 15, and the left side right wall portion 14 b is connected to the front end position of the right end of the lower wall portion 11. The right side right wall portion 14 a and the left side right wall portion 14 b overlap each other to form the right wall portion 14. The right side right wall portion 14a is in close contact with the right side of the left side right wall portion 14b.

  A cut and bent piece 14a1 cut and bent to the left is formed on the right side right wall portion 14a, and a cut and bent piece 14b1 formed to be cut and bent to the left is formed on the left right wall portion 14b It is done. The cut and bent pieces 14a1 and 14b1 (pieces formed by bending the upper portion slightly leftward around the lower longitudinal shaft) are formed at substantially overlapping positions in the lateral direction. It is done. Thus, the upper end portion of the cutting and bending piece 14a1 protruding leftward from the right side right wall portion 14a, and the upper side of the recess formed in the left side right wall portion 14b (depression formed by bending the cutting and bending piece 14b1) The edges face up and down.

  Thus, in the right wall portion 14, the right and right side wall portions 14a and the left and right side wall portions 14b are cut and bent so that the positional deviation in the direction in which the upper wall portion 15 and the lower wall portion 11 are separated is suppressed. It is formed so that 14a1 may be hooked on the left side right wall part 14b (protrusion provided in one is hooked in the other). Therefore, it is possible to prevent as much as possible the opening (problem due to the deformation) of the housing 1 due to the external force.

  Further, as shown in FIG. 24, when the lower guide wall 32D in the lower wall 11 slides to the lower projection 41D when the projection 3 is pushed from the front, a part of the lower wall 11 The lower wall inclined part 11x formed by cutting and bending is provided. Further, when the projecting portion 3 is pushed from the front, a part of the upper wall portion 15 is cut and bent in the upper wall portion 15 where the upper convex portion 41U of the upper guide wall portion 32U slides. An upper wall inclined portion 15x is provided. The inclined portions (11x, 15x) are inclined toward the inside of the housing portion 1 as they move backward (in the direction opposite to the projecting direction of the protrusion 3), and the inclined portions (11x, 15x) The distance D1 between the rear ends is smaller than the width direction (vertical direction) dimension D2 of the housing portion 1 not provided with the inclination.

  The lower wall inclined portion 11x is provided with a rectangular-shaped cut (but excluding the front side extending in the left and right direction) in the lower wall portion 11 in which the side extending in the front and rear direction is longer than the side extending in the left and right direction. As a shaft, it is a piece formed by bending so as to rotate the rear side part slightly upward. The lower wall inclined portion 11x extends upward from the front side (root side) to the rear side by an angle of the rotation, and inclines toward the inside of the housing portion 1 as it proceeds to the rear side. As the lower guide wall portion 32D mainly functions as a plate spring, the lower convex portion 41D elastically contacts the lower wall inclined portion 11x. Further, due to the inclination of the lower wall inclined portion 11x, the lower guide wall portion 32D is elastically deformed more largely as the protrusion 3 retracts, and the elastic force of the lower guide wall portion 32D is increased, so that the lower convex portion 41D is lower. Contact the wall slope 11x more strongly.

  In the upper wall inclined portion 15x, a notch having a rectangular shape (with the exception of the front side extending in the left and right direction) is provided in the upper wall portion 15 with the side extending in the front and rear directions longer than the side extending in the left and right As a shaft, it is a piece formed by bending so as to rotate the rear side portion slightly downward. The upper wall inclined portion 15x extends obliquely downward from the front side (the root side) by the angle of the rotation, and inclines toward the inside of the housing portion 1 as it goes rearward. As the upper guide wall portion 32U mainly functions as a plate spring, the upper convex portion 41U elastically contacts the upper wall inclined portion 15x. Further, the upper guide wall portion 32U is elastically deformed to a greater extent as the protrusion 3 is retracted due to the inclination of the upper wall inclined portion 15x, and the elastic force of the upper guide wall portion 32U is increased. Contact the inclined portion 15x more strongly.

  As described above, when the lower convex portion 41D is in sliding contact with the lower wall inclined portion 11x and the upper convex portion 41U is in elastic contact with the upper wall inclined portion 15x, the respective convex portions (41D, 41U) And the inclined portions (11x, 15x) can be made more secure to make the electrical contact more stable. Furthermore, by making the inclined portions (11x, 15x) inclined as described above, the working area (appropriate operation range) of the contact Y can be widely taken. This point will be described in more detail with reference to FIG.

  The graph shown in FIG. 25 shows the contact force P (corresponding to the contact force between the connection target and the tip contact portion 31) and the contact resistance Q (connection) when the protrusion 3 is moved using the sample of the contact Y It shows the result of measuring the contact resistance between the object and the connected object). In the graph, the horizontal axis indicates the distance from the rear wall 12 of the tip contact portion 31 (in other words, the longitudinal dimension of the contact Y at each time), and the vertical axis indicates the contact force P and the contact resistance Q. ing.

  When measuring the contact force P, the rear wall 12 of the contact Y is fixed, and a pusher (test jig) movable in the front-rear direction is installed on the front side of the tip contact portion 31 and the pusher is made in the front-rear direction It was made to move and push the tip contact portion 31. The force received by the pusher from the tip contact portion 31 can be measured using a load cell (load measuring machine), and the result of this measurement is regarded as the contact force P.

  The graph P1 shown in FIG. 25 indicates the contact force P when the pusher is moved backward and the projection 3 is moved from the initial state (not retracted) to a predetermined final state (fully retracted). It shows. The graph P2 shows the contact force P when the pusher is moved forward and the protrusion 3 is moved from the final state to the initial state. The dashed-dotted line shown in FIG. 25 corresponds to a graph of the contact force P when it is assumed that there is no friction between the convex portions (41 D, 41 U) and the housing portion 1. As the position of the protrusion 3 is closer to the initial state, the difference between the graphs P1 and P2 and the alternate long and short dash line shown in FIG. 25 is smaller.

  Further, when measuring the contact resistance Q, a substrate fixed to the back wall 12 and a substrate brought into contact with the end contact portion 31 (movable in the front and rear direction) are provided and brought into contact with the end contact portion 31 The measurement result of the resistance value between both substrates while moving the substrate was regarded as the contact resistance Q. A graph Q shown in FIG. 25 shows the contact resistance Q when the protrusion 3 is moved from the final state to the initial state by moving the substrate. The contact resistance Q basically becomes a constant value (about 20 mΩ in the present embodiment) when the contact force P exceeds a predetermined reference value (about 0.2 N in the present embodiment), and the contact Y is normal The function (function to appropriately connect the connection target and the connection target) is exhibited.

  In addition, the operation range (range of the amount of protrusion of the protrusion 3) in which the contact resistance Q is stabilized to the predetermined value is a working area where the function of the contact Y is exhibited well, and the contact Y according to the present embodiment. In this case, the area W1 shown in FIG. 25 is a working area. Here, assuming that the distance between the upper wall portion 15 and the inner surface of the lower wall portion 11 is D1 (see FIG. 24) without providing each inclined portion (11x, 15x) in the contact Y, the protruding portion The contact force P when 3 is moved from the final state to the initial state is approximately as shown by the graph P2 'in FIG.

  In this hypothetical situation, it is possible to make each convex part (41D, 41U) and the housing part 1 contact stably by utilizing the elastic force of each guide wall part (32D, 32U), but the projection part Since the distance between the upper wall portion 15 and the inner surface of the lower wall portion 11 is constant even if 3 travels forward, the friction between the convex portions (41D, 41U) and the housing portion 1 hardly changes. Therefore, in the case of the graph P2 ', the inclination of the graph is substantially the same as the inclination of the alternate long and short dash line shown in FIG. 25, and the contact force P decreases faster than the graph P2.

  As shown in the graph P2 ', when the contact force P decreases relatively quickly, the contact force P falls below the reference value described earlier, and the working area becomes the region W2 shown in FIG. The working area W2 is reduced by an amount indicated by the outlined arrow Wp in FIG. 25 as compared with the working area W1 of the present embodiment. As apparent from the above description, the present embodiment appropriately contacts the guide wall portions (32U, 32D) to the housing portion 1 by providing the inclined portions (11x, 15x), and the working is relatively wide. It is possible to secure an area.

  The difference (deviation amount) between the graphs P1 and P2 shown in FIG. 25 and the dashed-dotted line increases as the inclination angles of the inclined portions (11x, 15x) increase. In consideration of this point, it is desirable that the angle of the inclination be appropriately set in accordance with product specifications and the like. As in the present embodiment, when the housing portion 1 is partially bent to provide the inclined portions (11x, 15x), the inclination angle can be easily adjusted by changing the bending angle in the cutting and bending. It is possible. However, it is also possible to provide each inclined portion (11x, 15x) by another method such as a method of recessing a part of the housing portion 1 by press processing, for example.

  Further, as shown in FIG. 21 and FIG. 22 etc., a lower engagement hole 11y having a shape extending in the front-rear direction is provided in the rightward portion of the lower wall portion 11, and in the rightward portion of the upper wall portion 15 An upper engagement hole 15y having a shape extending in the direction is provided. These engagement holes (11y, 15y) are disposed symmetrically with reference to the center in the vertical direction of the contact Y, and are formed in the same shape and size.

  On the other hand, the lower engaging portion 33D and the upper engaging portion 33U are provided on the contact Y so as to extend from the projecting portion 3. More specifically, the lower engagement portion 33D extends from the lower end portion of the rear end of the right side wall portion 32R, and the upper engagement portion 33U extends from the upper end portion of the rear end of the right side wall portion 32R. ing. The lower engagement portion 33D has a projection that protrudes downward, and the projection is fitted into the lower engagement hole 11y from the inside of the housing portion 1. The upper engagement portion 33U has a projection that protrudes upward, and the projection is fitted into the upper engagement hole 15y from the inside of the housing portion 1.

  When the protrusion 3 moves in the front-rear direction, along with this, the protrusion of the lower engagement portion 33D moves in the front-rear direction inside the lower engagement hole 11y, and the protrusion of the upper engagement portion 33U engages with the upper engagement. The joint hole 15y is moved in the front-rear direction. In the present embodiment, when the protrusion 3 receives a force in the rearward direction and retreats, the protrusion of the lower engagement portion 33D does not contact the edge of the lower engagement hole 11y, and the upper engagement portion Since the projections of 33U do not contact the edge of the upper engagement hole 15y, friction due to the contact does not occur. However, such contact may occur.

  On the other hand, as shown in FIG. 26, in the situation where the connection object Ob moves in the direction indicated by the colored arrow and pushes the projection 3, the projection 3 is pushed backward as well as to the left. At this time, when the protrusion 3 is moved slightly to the left, the protrusion of the lower engagement portion 33D abuts on the left edge of the lower engagement hole 11y, and the protrusion of the upper engagement portion 33U is in the upper engagement By hitting the left edge of the hole 15y, the displacement of the protrusion 3 further to the left is suppressed. Thereby, it is possible to suppress large displacement of the protrusion 3 to the left, and to suppress the occurrence of buckling (in particular, buckling of the plate spring portion 2) or the like in the contact Y.

  In addition, when the protrusion 3 is moved slightly to the right, the protrusion of the lower engagement portion 33D abuts on the right edge of the lower engagement hole 11y, and the protrusion of the upper engagement portion 33U is the upper engagement hole By hitting the right edge of 15y, it is possible to suppress further displacement of the protrusion 3 to the right, and also in this case, it is possible to suppress the occurrence of buckling or the like in the contact Y.

  In addition, since the projection part 3 is supported by the flat spring part 2 of the shape shown in FIG. 23 etc., the locus of the projection of each engaging part (33D, 33U) when the projection part 3 is pushed backward and retreats. Is an arc-shaped locus that advances so as to incline slightly to the left from the true rear direction, as shown by the broken line arrow in FIG. Taking this point into consideration, the shape (particularly the shape of the left edge) of each engagement hole (11y, 15y) is a shape that is inclined and extended to the same extent as the locus. Thereby, even when the projection 3 is pushed backward while continuing to be pushed leftward, the projections of the engagement parts (33D, 33U) slide the left edge of each engagement hole (11y, 15y) The protrusion 3 is appropriately retracted while being made to prevent the protrusion 3 from being largely displaced to the left. Further, in the case where each engaging hole (11y, 15y) is formed to be inclined and extended in this manner, the shape can be made closer to the above-mentioned locus as compared with the case where the shape is extended straight back and forth. It is easy to make the via holes (11y, 15y) more compact. In addition, in consideration of the fact that the above-mentioned locus is arc-shaped, the shapes of the respective engagement holes (11y, 15y) may be formed in an arc-shaped to match the locus. In this way, each engagement hole (11y, 15y) can be made into a shape closer to the above-mentioned locus, and it becomes easy to form each engagement hole (11y, 15y) more compactly.

  Further, in the present embodiment, the edge on the right side of each engagement hole (11y, 15y) is also inclined to the same extent as the locus. Therefore, even when the projection 3 is pushed backward while continuing to be pushed to the right, the projections of the engagement parts (33D, 33U) slide on the right edge of the engagement holes (11y, 15y) In this way, the protrusion 3 is properly retracted to prevent the protrusion 3 from being largely displaced to the right.

  Further, in the contact Y, the support portion (support piece) 13b2 is provided as in the first embodiment, and by changing the bending depth of the support portion 13b2, the protrusion amount of the protrusion 3 in the initial state is obtained. It is possible to adjust etc. Then, in the state in which the contact Y is adjusted such that the amount of projection is at least less than the maximum, the projections of the engaging portions (33D, 33U) contact the front edges of the engaging holes (11y, 15y) It is not formed.

  For example, as for the upper engagement hole 15y, as shown in FIG. 27, a gap γ is generated between the protrusion of the upper engagement portion 33U and the front edge of the upper engagement hole 15y, both of which are Do not touch If the protrusion of the upper engaging portion 33U contacts the front edge of the upper engaging hole 15y, the amount of protrusion of the protruding portion 3 can not be further increased. However, in the present embodiment, since such a situation is avoided, adjustment of the protrusion amount of the protrusion 3 is not hindered.

  As described above, in the contact Y, the respective engaging portions (33D, 33U) are provided on the side of the projecting portion 3 (the side of the projecting portion 3 relative to the flat spring portion 2), and the respective engaging portions (33D, 33U) at least one direction (here, the left-right direction) orthogonal to the front (the projecting direction of the projecting portion 3) by engaging with the portion on the housing 1 side (the side of the housing 1 relative to the plate spring 2) The displacement of the protrusion 3 to the side is suppressed. Therefore, it is possible to suppress the occurrence of buckling or the like in the contact Y. Further, by suppressing the displacement of the protrusion 3 in the left and right direction, the relative displacement between the lower protrusion 41D and the lower wall inclined portion 11x in the left and right direction, and the upper protrusion 41U and the upper wall inclination It is possible to prevent relative positional deviation of the portion 15x in the left-right direction as much as possible, and to further stabilize the contact between the convex portion (41D, 41U) and the inclined portion (11x, 15x).

  In the contact Y, engaging portions (33D, 33U) having projections in the width direction (vertical direction) are provided to extend from the opposite side of the side of the projecting portion 3 connected to the plate spring portion 2, The projection engages with a portion on the housing portion 1 side. Further, the projections of the respective engaging portions (33D, 33U) are fitted in the respective engaging holes (11y, 15y) provided in the housing portion 1 so as to engage with the edges of the holes. Thus, by adopting a structure in which the projections of the engaging portions (33D, 33U) are hooked to the edge of the hole provided in the housing portion 1, the displacement of the contact Y in the lateral direction is effectively suppressed with a simple configuration. It is possible.

  In addition, as a mechanism which suppresses the displacement of the protrusion part 3 to the direction orthogonal to the front, you may employ | adopt the thing of another form instead of the mechanism of the form mentioned above. An example (contact Y1) of a contact adopting another form of mechanism will be described below.

  FIGS. 28 and 29 are external perspective views of the contact Y1 viewed from different directions, and FIG. 30 is a cross-sectional view of the contact Y1 when it is cut at the center in the vertical direction. FIG. 31 is an external perspective view of the contact Y1 cut at the center in the vertical direction.

  As shown in these figures, in the contact Y1, instead of omitting the formation of the engagement holes (11y, 15y), a lower engagement piece 14xD is provided at the lower end portion of the front end of the left right wall portion 14b. Is provided, and an upper engaging piece 14xU is provided on the upper end portion of the front end of the left side right wall portion 14b. These engagement pieces (14xD, 14xU) are arranged symmetrically with reference to the center in the vertical direction of the contact Y, and are formed in the same shape and size. Each engagement piece (14xD, 14xU) extends slightly leftward from the front end of the left side right wall portion 14b, and further extends substantially rearward from the left end thereof. The portion extending substantially rearward extends exactly in the direction inclined slightly to the left from the just rear direction. The inclination angle is set to be equal to the inclination of the left edge of each engagement hole (11y, 15y) in the contact Y.

  On the other hand, the lower engaging portion 34D and the upper engaging portion 34U are provided in the contact Y1 so as to extend from the projecting portion 3. More specifically, the lower engaging portion 34D extends from the lower end portion of the rear end of the right side wall portion 32R, and the upper engaging portion 34U extends from the upper end portion of the rear end of the right side wall portion 32R. ing.

  The lower engaging portion 34D extends to the space above the lower engaging piece 14xD, and has a projection that protrudes downward in the vicinity of its tip. The protrusion of the lower engaging portion 34D is disposed on the right side of the lower engaging piece 14xD, and a slight gap is provided between the protrusion and the lower engaging piece 14xD. The upper engaging portion 34D extends to the space below the upper engaging piece 14xU, and has a projection protruding downward near the tip. The protrusion of the upper engaging portion 34D is disposed on the right side of the upper engaging piece 14xU, and a slight gap is provided between the protrusion and the upper engaging piece 14xU.

  In the contact Y1, the substantially rearward extending portion of each engagement piece (14xD, 14xU) plays the same role as the left edge of each engagement hole (11y, 15y) in the contact Y. That is, even if the projection 3 is pushed backward while continuing to be pushed leftward, the protrusions of the engagement parts (34D, 34U) extend substantially rearward of the engagement pieces (14xD, 14xU) , And the protrusion 3 is properly retracted while preventing the protrusion 3 from being largely displaced to the left.

3. Others In the configuration of the present invention, in addition to the above embodiment, various modifications can be made without departing from the scope of the invention. That is, the above embodiments should be considered as illustrative in all points and not restrictive. It is understood that the technical scope of the present invention is indicated not by the description of the above embodiment but by the scope of the claims, and includes all modifications that fall within the meaning and scope equivalent to the scope of the claims. It should.

  The present invention is applicable to, for example, contacts provided in portable communication devices and the like.

DESCRIPTION OF SYMBOLS 1 housing part 11 lower wall part 11x lower wall inclined part 11y lower engagement hole 12 rear wall part 13 front wall part 13a front side wall part 13a1 hole part 13b rear side front wall part 13b1 claw part 13b2 support part 14 right wall part 14aU front upper right wall 14aD front lower right wall 14bU rear upper right wall 14bD rear lower right wall 14xU upper engagement piece 14xD lower engagement piece 15 upper wall 15x upper wall inclined portion 15y upper engagement Bore 2 Flat spring portion 21 Lower turn portion 22 Backward receding portion 23 Upper turn portion 24 Forward rectilinear portion 3 Protrusion 31 Tip contact portion 31-1 Tip upper guide surface 31-2 Tip lower guide surface 32U Upper guide wall 32U-1 upper curved guide portion 32D lower guide wall portion 32D-1 lower curved guide portion 32L left side wall portion 32R right side wall portion 33U, 34U upper engaging portion 33D, 34D lower engaging portion 41U upper convex portion 41D lower convex portion 42U upper guide portion 42D lower guide portion BD substrate FR frame Ob connection target SP opening X, Y, Y1 contact

Claims (7)

With the housing,
A projection which protrudes from the opening of the housing and contacts the connection object;
A spring portion housed in the housing, a free end side being connected to the projecting portion, and a spring portion biasing the projecting portion in the projecting direction, the contact formed by bending a sheet of conductive plate material,
The projecting portion forms a side wall portion on the free end side, and a guide side wall portion branches in each width direction, and extends in a direction opposite to the projecting direction,
A contact according to claim 1, wherein at least a free end of said one guide side wall is in sliding contact with the inner surface of the wall of said housing. An engaging portion is provided on the side of the protrusion,
2. The contact according to claim 1, wherein the displacement of the protrusion in at least one direction orthogonal to the protruding direction is suppressed by the engagement of the engaging portion with the portion on the housing side. The engagement portion having a protrusion in the width direction is provided to extend from the side wall portion of the protrusion.
The contact according to claim 2, characterized in that the projection engages with the part on the housing side. The protrusion is
4. The contact according to claim 3, wherein the contact is fitted in a hole provided in the housing and engages with the edge of the hole.   The contact according to claim 4, wherein the hole is formed in an arc shape. The housing is provided with an inclined portion which is inclined toward the inside of the housing as it proceeds in the reverse direction.
The contact according to any one of claims 1 to 5, wherein at least one of the guide side wall portions is in elastic sliding contact with the inclined portion. The contact according to claim 6, wherein the inclined portion is formed by cutting and bending a part of the housing.