Connector

Abstract

To provide a connector which can suppress the inclination of a terminal fitting toward a housing in a reflow process.SOLUTION: A connector 10 is provided with a housing 20 having a holding wall part 19 through which a press-in hole 21 penetrates. A terminal fitting 5 has a board connection part 8 which is surface-mounted on a circuit board 50, and it is press-fitted into the press-in hole 21 from the rearward of the holding wall part 19. The press-in hole 21 comprises: a standard width part 27 which constitutes a front end region of the press-in hole 21; and a widened part 31 which has a larger width dimension than a standard width D and constitutes a rear end of the press-in hole 21. The terminal fitting 5 has: a narrow part 3 which is housed in the standard width part 27; and a wide part 7 which is housed in the widened part 31. On an inner surface of the standard width part 27 and an inner surface of the widened part 31, there is provided an inclination suppression part 29 which suppresses the inclination of the terminal fitting toward the holding wall part 19 by making contact with an outer surface of the terminal fitting 5.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present disclosure relates to connectors. [Background technology]

[0002] The connector disclosed in Patent Document 1 has a terminal insertion hole (hereinafter also referred to as a press-in hole) in a rear wall (hereinafter also referred to as a retaining wall portion) of the housing, into which a terminal fitting is press-fitted from behind. A guide edge that opens in a trumpet shape is formed at the rear end of the press-in hole. The terminal fitting is pressed into the terminal insertion portion after being corrected for misalignment by sliding against the guide edge. The terminal fitting has a connection portion (hereinafter also referred to as a board connection portion) that protrudes outside the housing and is connected to a board formed on the surface of a circuit board. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2007-122923 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the above connector, the rear end of the terminal fitting, that is, the board connection portion, is soldered to the circuit board through a reflow process. Here, the holding wall portion holds the terminal fitting in a tight contact state only in the area of ​​the terminal fitting forward of the guide. Therefore, when the housing thermally expands and deforms during the reflow process, the terminal fitting may tilt relative to the back wall. If the terminal fitting tilts, the board connection portion may rise up from the circuit board, which may cause a connection failure.

[0005] An object of the present disclosure to solve the problem is to provide a connector capable of suppressing inclination of a terminal fitting relative to a housing during a reflow process. [Means for solving the problem]

[0006] a housing made of synthetic resin having a retaining wall portion with a through-hole formed therein; a terminal fitting having a board connection portion to be surface-mounted on a circuit board and press-fitted into the press-fit hole from behind the holding wall portion, the press-fit hole is configured with a standard width portion that constitutes a front end region of the press-fit hole and a widened portion that has a width direction dimension larger than that of the standard width portion and constitutes a rear end portion of the press-fit hole, the terminal fitting has a narrow portion accommodated in the reference width portion and a wide portion accommodated in the wide width portion, A connector in which a tilt suppression portion is formed on the inner surface of the standard width portion and the inner surface of the widening portion, the tilt suppression portion suppressing the tilt of the terminal fitting relative to the retaining wall portion by abutting against the outer surface of the terminal fitting in a direction intersecting the width direction. Effect of the Invention

[0007] The connector of the present disclosure can prevent the terminal fittings from tilting relative to the housing during the reflow process. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view of a connector according to an embodiment. [Diagram 2] FIG. 2 is a side cross-sectional view of the connector according to the embodiment. [Diagram 3] FIG. 3 is a cross-sectional plan view of the connector according to the embodiment. [Figure 4] FIG. 4 is an enlarged rear view showing a rear end portion of a press-fit hole of the connector according to the embodiment. [Diagram 5] FIG. 5 is a rear view of the connector of the embodiment in which no terminal fittings are accommodated. [Figure 6] FIG. 6 is a front view of the connector according to the embodiment in which no terminal fittings are accommodated. [Figure 7] FIG. 7 is an enlarged rear view showing a rear end portion of a press-fit hole of a connector not housing a terminal fitting according to an embodiment. [Figure 8]FIG. 8 is an enlarged front view showing a front end portion of a press-fit hole of a connector not housing a terminal fitting according to an embodiment. [Figure 9] FIG. 9 is an enlarged rear perspective view showing a rear end portion of a press-fit hole of a connector not housing a terminal fitting according to an embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] [Description of the embodiments of the present disclosure]

[0010] The connector of the present disclosure comprises: (1) A housing made of synthetic resin has a retaining wall portion in which a through-type press-fit hole is formed. The terminal fitting has a board connection portion to be surface-mounted on a circuit board and is press-fitted into the press-fit hole from the rear of the retaining wall portion. The press-fit hole is composed of a standard width portion that constitutes a front end region of the press-fit hole and a widened portion that has a widthwise dimension larger than the standard width portion and constitutes a rear end portion of the press-fit hole. The terminal fitting has a narrow width portion that is accommodated in the standard width portion and a wide width portion that is accommodated in the widened portion. An inclination suppression portion is formed on the inner surface of the standard width portion and the inner surface of the widened portion to suppress inclination of the terminal fitting relative to the retaining wall portion by abutting against an outer surface of the terminal fitting in a direction intersecting the widthwise direction. The tilt suppression portion of the connector of the present disclosure is formed not only in the front end region of the press-fit hole but also in the widened portion located at the rear end of the press-fit hole, so that the contact length with the terminal fitting in the front-rear direction is longer than that of a connector in which the tilt suppression portion is formed only in the front end region of the press-fit hole, thereby effectively suppressing the terminal fitting from tilting relative to the protective wall portion when the housing thermally expands during the reflow process.

[0011] (2) In the connector described in (1), a tapered guide surface is formed at the rear end of the tilt suppression portion. With this configuration, the terminal fitting that has shifted in position with respect to the press-fit hole can be guided into the press-fit hole by the tapered guide surface.

[0012] (3) In the connector described in either (1) or (2), the tilt suppression portion is formed only on both ends of the inner surface in the width direction. A recess that does not contact the terminal fitting is formed in the center of the inner surface in the width direction. With this configuration, when the terminal fitting is pressed into the press-fit hole, the center of the inner surface in the width direction does not contact the terminal fitting. Therefore, compared to a configuration in which the tilt suppression portion contacts the terminal fitting over the entire width of the inner surface, the amount of resin adhering to the terminal fitting is reduced, and poor connection with the mating terminal due to resin adhesion to the terminal fitting can be prevented.

[0013] (4) In the connector according to any one of (1) to (3), the recess is formed continuously over the entire length of the press-fitting hole in the press-fitting direction. With this configuration, the terminal fitting and the recess are not in contact over the entire length of the tilt suppression portion in the press-fitting direction of the press-fitting hole, so that the amount of resin adhering to the terminal fitting can be further reduced.

[0014] (5) In the connector according to any one of (1) to (4), the width dimension of the recess is constant over the entire length of the press-fit hole in the press-fit direction. With this configuration, no complicated mold is required to form the press-fit hole.

[0015] [Details of the embodiment of the present disclosure] The present disclosure will be described below with reference to the drawings. The present disclosure is not limited to these examples, but is defined by the claims, and includes all modifications within the meaning and scope of the claims.

[0016] [Embodiment 1] The connector 10 of the first embodiment of the present disclosure includes a plurality of terminal fittings 5 ​​and a housing 20 to which the terminal fittings 5 ​​are attached. The connector 10 is a board connector mounted on a circuit board 50. The housing 20 is capable of being fitted into a mating housing 60. In the following description, the "front side" is represented by "F" in Figs. 1, 2, 3, and 9 in terms of the front-rear direction. The "upper side" is represented by "U" in Figs. 1, 2, 4-9 in terms of the up-down direction. The "right side" is represented by "R" in Figs. 1, 3, and 4-9 in terms of the left-right direction.

[0017] [Housing 20] The housing 20 is made of synthetic resin, and has a hood portion 11 that is a flat rectangular tube that is elongated in the width direction. As shown in FIG.

[0018] 2 and 3, the hood portion 11 has an upper wall 13 and a lower wall 15 arranged in a vertical pair, and side walls 17 arranged in a horizontal pair. A retaining wall portion 19 is formed at the rear end of the hood portion 11, and is continuous with the rear ends of the upper wall 13, the lower wall 15, and the pair of side walls 17. The retaining wall portion 19 is a portion whose wall thickness direction faces the front-rear direction, and retains a plurality of terminal fittings 5. The retaining wall portion 19 has a plurality of press-fit holes 21 that penetrate the retaining wall portion 19 in the wall thickness direction (front-rear direction). The terminal fittings 5 ​​are press-fitted into the press-fit holes 21 from the rear of the housing 20.

[0019] As shown in Fig. 3, the front surface 19a of the retaining wall portion 19 facing the inside of the hood portion 11 has a shallow recessed shape, and has a storage portion 23 that has a rectangular shape when viewed from the front of the housing 20. As shown in Fig. 6, all of the multiple press-fit holes 21 are located within the storage portion 23.

[0020] As shown in Figs. 4 and 8, the press-fit hole 21 is formed by four inner walls 25. The inner walls 25 are composed of a pair of first inner walls 25a, which are parallel to each other, and a pair of second inner walls 25b, which are parallel to each other. The shape of the inner walls 25 is rectangular when viewed from the front. The press-fit hole 21 is composed of a reference width portion 27 that constitutes the front end region of the press-fit hole 21, and a widened portion 31 that has a larger width dimension than the reference width and constitutes the rear end of the press-fit hole 21. Both left and right ends of the widened portion 31 are located outward in the left-right direction from the reference width portion 27. The inner surfaces of the reference width portion 27 and the widened portion 31 are composed of a pair of first inner walls 25a and a pair of second inner walls 25b. The opposing distance between the pair of second inner walls 25b in the reference width portion 27 is defined as a reference width D. The reference width D is approximately the same as the left-right width of the narrow width portion 3 of the terminal fitting 5 described later. The reference width portion 27 has a generally rectangular column shape extending in the front-rear direction.

[0021] The widened portion 31 has a rectangular shape with a width dimension greater than a front-rear dimension in a plan view seen from above the housing 20. The widened portion 31 has a flattened rectangular shape.

[0022] 7 and 9, a pair of upper and lower first inner walls 25a constituting the press-fit hole 21 are connected in the same plane at the reference width portion 27 and the widened width portion 31. The opposing distance between the pair of left and right second inner walls 25b constituting the reference width portion 27 is narrower than the opposing distance between the pair of left and right second inner walls 25b constituting the widened width portion 31. The second inner walls 25b constituting the reference width portion 27 and the second inner walls 25b constituting the widened width portion 31 extend in the front-rear direction in parallel to each other.

[0023] As shown in Figs. 7 and 9, the inclination suppressing portion 29 is formed at the four corners of the inner wall 25 constituting the reference width portion 27 in a front view. The inclination suppressing portion 29 connected to the inclination suppressing portion 29 of the reference width portion 27 is formed at the four corners of the inner wall 25 constituting the widened portion 31 in a front view. These inclination suppressing portions 29 are disposed at both the left and right ends of the pair of upper and lower first inner walls 25a, and are formed in a stepped shape in a front view. The corners 29R of the stepped inclination suppressing portion 29 extend continuously and straight from the front end of the reference width portion 27 to the rear end of the widened portion 31. These four corners 29R extend parallel to each other from the front end to the rear end of the press-fit hole 21.

[0024] A recess 33 is formed in the center in the width direction of the pair of upper and lower first inner walls 25a. The recess 33 is a space formed between a pair of tilt suppressing parts 29 arranged at an interval in the width direction. The recess 33 is formed continuously over the entire length of the tilt suppressing part 29 in the front-rear direction. The width dimension of the recess 33 is constant over the entire length of the press-fitting hole 21 (recess 33) in the front-rear direction. In the process of pressing the terminal metal fitting 5 into the press-fitting hole 21, the inner surface of the recess 33 does not contact the terminal metal fitting 5. A tapered guide surface 35 is formed at the rear end of the tilt suppressing part 29. The guide surface 35 is a portion for guiding the terminal metal fitting 5, which is vertically displaced with respect to the press-fitting hole 21, into the press-fitting hole 21 when the terminal metal fitting 5 is pressed into the press-fitting hole 21.

[0025] A first inclined surface 37 is formed at the rear end of the pair of second inner walls 25b constituting the reference width portion 27, the first inclined surface 37 being inclined so that the distance between the second inner walls 25b becomes wider toward the rear. A second inclined surface 38 is formed at the rear end of the pair of second inner walls 25b constituting the widened portion 31, the second inclined surface 38 being inclined so that the distance between the second inner walls becomes wider toward the rear. The first inclined surface 37 and the second inclined surface 38 are portions for guiding the terminal fitting 5, which has been misaligned in the left-right direction with respect to the press-fit hole 21, into the press-fit hole 21 when the terminal fitting 5 is press-fitted into the press-fit hole 21.

[0026] 2, the locking portion 22 of the housing 20 and the mating locking portion 61 of the mating housing 60 are engaged with each other, so that the housing 20 and the mating housing 60 are held in a fitted state, and each terminal connection portion 6 is connected to a mating terminal 63 attached to the mating housing 60. The mating terminal 63 is a female terminal fitting having a cylindrical box portion 65, and contacts the terminal connection portion 6. The rear end of the board connection portion 8 of each terminal fitting 5 is connected to the mounting surface 50A of the circuit board 50 by soldering. The board connection portion 8 has a portion at its lower end that extends rearward via a second bent portion 12 and is connected to the circuit board 50 by soldering.

[0027] [Terminal metal fitting 5] The terminal fitting 5 is made of a conductive metal and is formed by bending a long and narrow plate material having a substantially rectangular cross section at two positions at substantially right angles. As shown in Figs. 1 and 2, the terminal fitting 5 has a terminal connection portion 6 extending linearly in the front-rear direction, and a board connection portion 8 connected to the terminal connection portion 6. The board connection portion 8 is connected to the rear end of the terminal connection portion 6 via a first bent portion 9, and extends downward from the first bent portion 9. The board connection portion 8 is bent into an L-shape in a side view of the terminal fitting 5, and is connected to the circuit board 50. The surface of the terminal fitting 5 is gold-plated (not shown) to improve electrical connection with the mating terminal 63.

[0028] As shown in FIG. 3, the terminal connection portion 6 has a narrow portion 3 constituting the front end of the terminal connection portion 6 and a wide portion 7 constituting the rear end of the terminal connection portion 6. The narrow portion 3 has a plate shape that is long in the front-rear direction. The width dimension of the narrow portion 3 is approximately the same as the reference width D. The rear end of the narrow portion 3 has a press-fit protrusion 4 that protrudes in the width direction intersecting with the press-fit direction. The width dimension of the press-fit protrusion 4 is slightly larger than the reference width D. In a state in which the terminal fitting 5 is press-fitted into the press-fit hole 21, the rear end of the narrow portion 3 where the press-fit protrusion 4 is formed is located within the reference width portion 27. The wide portion 7 is arranged so as to be continuous with the rear end of the narrow portion 3. The plan view shape of the wide portion 7 is approximately square with a width dimension larger than the reference width D. The wide portion 7 has an approximately rectangular parallelepiped shape with a width dimension larger than the reference width D. When the terminal fitting 5 is press-fitted into the press-fit hole 21 , the wide portion 7 is housed within the widened portion 31 .

[0029] As shown in Fig. 4, in rear view, the tilt suppression portion 29 of the widened portion 31 contacts both left and right ends of the upper surface 7U of the widened portion 7 and both left and right ends of the lower end surface 7D of the widened portion 7. The contact area between the widened portion 7 and the tilt suppression portion 29 of the widened portion 31 extends from the front end to the rear end of the widened portion 31. The tilt suppression portion 29 of the reference width portion 27 contacts both left and right ends of the upper surface 3U of the narrow portion 3 and both left and right ends of the lower surface 3D of the narrow portion 3. The contact area between the narrow portion 3 and the tilt suppression portion 29 of the reference width portion 27 extends from the front end to the rear end of the reference width portion 27.

[0030] [Effects of Connector 10] The connector 10 of the present disclosure is mounted on the circuit board 50 with the terminal fittings 5 ​​attached to the housing 20. When attaching the terminal fittings 5 ​​to the housing 20, the narrow portion 3, which is the front end region of the terminal fittings 5, is pressed into the press-fit hole 21 formed in the holding wall portion 19 from the rear of the housing 20 as shown in FIG. 5. The press-fit is performed by pressing the rear end surface 7B of the wide portion 7 of the terminal fittings 5. During the press-fit process, the front end of the narrow portion 3 enters the wide portion 31. The left and right ends of the upper surface 3U of the narrow portion 3 and the left and right ends of the lower surface 3D of the narrow portion 3 come into contact with the tilt suppressing portion 29 in the wide portion 31. At this time, if the terminal fittings 5 ​​are displaced upward or downward with respect to the press-fit hole 21, the left and right ends of the narrow portion 3 slide against the tapered guide surface, correcting the displacement of the terminal fittings 5.

[0031] When the press-fitting is further advanced from the state where the narrow width portion 3 has entered the wide width portion 31, the narrow width portion 3 enters the standard width portion 27 while being clamped at the top and bottom by the tilt suppression portion 29. At this time, even if the terminal fitting 5 is misaligned in the left-right direction with respect to the standard width portion 27, the front end of the narrow width portion 3 is smoothly guided into the standard width portion 27 by the first inclined surface 37 formed on the standard width portion 27.

[0032] When the press-fitting is further carried out, the surface of the tilt suppression portion 29 made of synthetic resin is scraped off by friction with both the left and right ends of the upper and lower surfaces of the metal narrow width portion 3 in the reference width portion 27, and the resin adheres to the surface of the narrow width portion 3. However, the tilt suppression portion 29 is formed only at both ends in the width direction of the press-fitting hole 21. Therefore, the center portion in the width direction of the narrow width portion 3 remains facing the recess 33, and therefore remains in a non-contact state with the tilt suppression portion 29 (first inner wall 25a). As a result, no resin adheres to the center portion in the width direction of the narrow width portion 3. That is, the connector 10 of the present embodiment 1 reduces the amount of resin adhering to the surface of the terminal metal fitting 5 during the press-fitting process by providing the recess 33. This ensures the connection reliability between the terminal metal fitting 5 and the mating terminal 63. In addition, the provision of the recess 33 reduces the sliding contact area between the narrow width portion 3 and the first inner wall 25a, thereby reducing the frictional resistance occurring during the press-fitting process of the terminal metal fitting 5.

[0033] At the end of the press-fitting process, the wide portion 7 enters the widened portion 31. The upper surface 7U and the lower surface D of the wide portion 7 come into contact with the tilt suppression portion 29 of the widened portion 31. At this time, even if the terminal fitting 5 is slightly tilted in the vertical direction, the front end edges of both the left and right ends of the wide portion 7 slide against the tapered guide surfaces 35, so that the terminal fitting 5 is guided into the widened portion 31.

[0034] When the press-fitting advances further from the above state, the front end of the narrow portion 3 penetrates the press-fitting hole 21 and protrudes into the hood portion 11 of the housing 20. When the terminal fitting 5 is pressed further forward, as shown in FIG. 3, the front end surface 7S of the wide portion 7 abuts against the front end surface 31S of the wide portion 31, so that the press-fitting operation (forward movement) of the terminal fitting 5 is restricted. Thus, the press-fitting process of the terminal fitting 5 into the press-fitting hole 21 is completed. During the press-fitting process of the terminal fitting 5, the central portions in the width direction on both the upper and lower surfaces of the wide portion 7 are kept out of contact with the first inner wall 25a in the wide portion 31 by the recess 33 formed between the pair of tilt suppressing portions 29. Therefore, adhesion of resin to the wide portion 7 is suppressed, and frictional resistance during press-fitting is reduced.

[0035] The connector 10 is mounted on the circuit board 50 by reflow soldering. Specifically, the board connection portion 8 of each terminal fitting 5 is placed on a paste-like solder cream applied to the surface of the circuit board 50, and in this state, the connector 10 and the circuit board 50 are heated in a reflow furnace (not shown). The solder melts by heating and is integrated with the board connection portion 8. Thereafter, the solder is cooled and solidified, whereby the board connection portion 8 is fixed to the circuit of the circuit board 50 so as to be conductive.

[0036] When the housing 20 is heated in a reflow furnace, for example, the housing 20 may be deformed such that the central portion of the housing 20 is curved upward, and the deformation of the housing 20 may cause the terminal metal fittings 5 ​​to tilt vertically relative to the holding wall portion 19. If the terminal metal fittings 5 ​​tilt relative to the housing 20, the board connection portion 8 of the terminal metal fittings 5 ​​may move away from the circuit board 50, which may cause a connection failure between the board connection portion 8 and the circuit board 50. However, in the case of the first embodiment, the tilt suppression portion 29 holds the terminal metal fittings 5 ​​from above and below from the front end to the rear end of the press-fit hole 21, so that the terminal metal fittings 5 ​​can be prevented from tilting vertically relative to the housing 20 during the reflow process. This reduces the possibility that the board connection portion 8 will move away from the circuit board 50, causing a connection failure. With the above, the assembly of the connector is completed.

[0037] The connector 10 of the first embodiment includes a housing 20 made of synthetic resin and a metal terminal fitting 5. The housing 20 has a retaining wall portion 19 in which a through-hole 21 is formed. The terminal fitting 5 has a board connection portion 8 that is surface-mounted on a circuit board 50, and is press-fitted into the press-fit hole 21 from the rear of the retaining wall portion 19. The press-fit hole 21 is composed of a standard width portion 27 that constitutes a front end region of the press-fit hole 21 and a widened portion 31 that is larger in width direction than the standard width portion 27 and constitutes a rear end portion of the press-fit hole 21. The terminal fitting 5 has a narrow portion 3 that is accommodated in the standard width portion 27 and a wide portion 7 that is accommodated in the widened portion 31. A tilt suppressing portion 29 that suppresses the tilt of the terminal fitting 5 relative to the retaining wall portion 19 by abutting against the outer surface of the terminal fitting 5 is formed on a first inner wall 25a of the standard width portion 27 and the widened portion 31. This allows the tilt suppression portion 29 to come into contact with the terminal fitting 5, thereby suppressing the tilt in the thickness direction of the terminal fitting 5 that occurs due to thermal expansion of the housing during reflow. This prevents the board connection portion 8 of the terminal fitting 5 from floating up from the circuit board 50 during the reflow process, which can cause a connection failure.

[0038] In the connector 10 of the first embodiment, a guide surface 35 is formed at the rear end of the tilt suppression portion 29, which is tapered and guides the terminal fitting 5. With this configuration, the tapered guide surface 35 smoothly guides the terminal fitting 5 into the press-fit hole 21, and misalignment of the terminal fitting 5 with respect to the press-fit hole 21 can be corrected. Since the connector 10 undergoes the reflow process with the terminal fitting 5 pressed into the press-fit hole 21 at the proper position, misalignment of the terminal fitting 5 with respect to the circuit board 50 can be effectively suppressed in the reflow process.

[0039] In the connector 10 of the first embodiment, the tilt suppression portion 29 is formed only at both ends in the width direction of the press-fit hole 21. A recess 33 that does not contact the terminal fitting 5 is formed in the center in the width direction of the first inner wall 25a that constitutes the press-fit hole 21. With this configuration, when the terminal fitting 5 is press-fitted into the press-fit hole 21, the center in the width direction of the inner surface is not in contact with the terminal fitting. Therefore, compared to a configuration in which the tilt suppression portion 29 contacts the terminal fitting 5 over the entire width of the first inner wall 25a, the amount of resin adhering to the terminal fitting 5 is reduced, and poor connection with the mating terminal 63 due to resin adhesion of the terminal fitting 5 can be suppressed.

[0040] In the connector 10 of the first embodiment, the recess 33 is formed continuously over the entire length in the press-fitting direction of the press-fit hole 21 (tilt suppressing portion 29). With this configuration, the terminal fitting 5 and the recess 33 are not in contact over the entire length of the tilt suppressing portion 29 arranged in the press-fitting direction of the press-fit hole 21, so that the amount of resin adhering to the terminal fitting 5 can be further reduced.

[0041] In the connector 10 of the first embodiment, the width dimension of the recess 33 is constant over the entire length in the press-fit direction of the press-fit hole 21 (tilt suppression portion 29). With this configuration, forming the press-fit hole 21 does not require a complicated mold.

[0042] [Another embodiment of the present disclosure] The above-described first embodiment disclosed herein should be considered as illustrative in all respects and not restrictive. (1) In the first embodiment, corners 29R of a pair of tilt suppression portions 29 formed on both the left and right ends of the first inner wall 25a extend parallel to each other across the front and rear ends of the space in which the standard width portion 27 is formed and the space in which the widened width portion 31 is formed. The corners of the pair of tilt suppression portions may be formed in a part of the space in which the standard width portion is formed, or may be formed in a part of the space in which the widened width portion is formed. (2) In the first embodiment, the corners 29R of the tilt suppression portion 29 formed at both left and right ends of the first inner wall 25a extend symmetrically in the front-rear direction in the pair of first inner walls 25a. The corners of the pair of tilt suppression portions formed at both left and right ends of the upper first inner wall may extend parallel to each other over the reference width portion and the front and rear ends of the widened width portion, and the corners of the pair of tilt suppression portions formed at both left and right ends of the lower first inner wall may extend only over the front and rear ends of the widened width portion. (3) The corners 29R of a pair of tilt suppression portions 29 formed at both left and right ends of the first inner wall 25a extend straight and parallel to each other across the front and rear ends of the space where the reference width portion 27 is formed and the space where the widened portion 31 is formed. The corners of the pair of tilt suppression portions formed at both left and right ends of the first inner wall may be formed to extend straight and parallel to each other at the reference width D in the space where the reference width portion is formed, and to extend straight and parallel to each other at a left-right width wider than the reference width D in the space where the widened portion is formed. (4) In the first embodiment, the tilt suppression portion 29 is formed only on both left and right ends of the pair of upper and lower first inner walls 25a. The tilt suppression portion may be formed on both left and right ends and the center of the pair of first inner walls, and a recess may be formed between the tilt suppression portion formed on both left and right ends and the tilt suppression portion formed in the center. Alternatively, the tilt suppression portion 29 may be formed on both left and right ends of the upper first inner wall, and only on the center of the lower first inner wall. (5) In the first embodiment, the tilt suppression portion 29 abuts against the outer surface of the terminal fitting 5 so as to sandwich the outer surface from substantially vertically upward and downward directions in the width direction. The tilt suppression portion may abut against the outer surface of the terminal fitting 5 from either the upward direction or the downward direction in the width direction. [Explanation of symbols]

[0043] 3…Narrow part 3D… Bottom end surface of narrow section 3U: Upper end surface of narrow section 4... Press-fit protrusion 5... Terminal fitting 6... Terminal connection part 7… Wide section 7B… Rear end face of wide section 7D… Lower end surface of wide section 7S… Front end face of wide section 7U…Top surface of the wide section 8... Board connection part 9... 1st bending part 10… Connector 11. Food section 12…Second bending part 13… Upper wall 15… Lower wall 17… Side wall 19... Retaining wall part 19a… Front end surface of retaining wall 20… Housing 21… Press-fit hole 22... Rock section 23… Shavings storage section 25…Inner wall 25a... 1st inner wall (inner surface) 25b… 2nd inner wall 27… Reference width section D…Reference width 29... Tilt prevention section 29R… Corner 31… Widening section 31S… Front end face of widened section 33…Recess 35… Guidance surface 37... 1st slope 38…Second slope 50… Circuit board 50A… Mounting surface 60…Matching housing 61… Lock part on the other side 63…Mating terminal 65… Hakobe

Claims

1. a housing made of synthetic resin having a retaining wall portion with a through-hole formed therein; a terminal fitting having a board connection portion to be surface-mounted on a circuit board and press-fitted into the press-fit hole from behind the holding wall portion, the press-fit hole is configured with a standard width portion that constitutes a front end region of the press-fit hole and a widened portion that has a width direction dimension larger than that of the standard width portion and constitutes a rear end portion of the press-fit hole, the terminal fitting has a narrow portion accommodated in the reference width portion and a wide portion accommodated in the widened portion, A connector in which a tilt suppression portion is formed on the inner surface of the standard width portion and the inner surface of the widening portion, the tilt suppression portion suppressing tilt of the terminal fitting relative to the retaining wall portion by abutting against the outer surface of the terminal fitting in a direction intersecting the width direction.

2. The connector according to claim 1 , wherein a tapered guide surface is formed at a rear end of the tilt suppression portion.

3. The inclination suppression portion is formed only on both end portions in the width direction of the inner surface, 3. The connector according to claim 1, wherein a recess that is not in contact with the terminal fitting is formed in a central portion in the width direction of the inner surface.

4. The connector according to claim 3 , wherein the recess is formed continuously over an entire length of the press-fitting hole in a press-fitting direction.

5. 5. The connector according to claim 4, wherein the widthwise dimension of the recess is constant over the entire length of the press-fitting hole in the press-fitting direction.

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