Terminal fittings and connectors

Abstract

To improve a holding force of a terminal fitting.SOLUTION: A terminal fitting 10 comprises: a terminal main body part 11 extended to a shaft direction; and a plurality of convex parts 20, 30, and 40 projected to a cross direction crossed to the shaft direction from the terminal main body part 11. A plurality of convex parts 20, 30, and 40 are arranged in parallel to the shaft direction, and includes: top surfaces 21, 31, and 41 along each shaft direction, front surfaces 22, 32, and 42 that are inclined to a front side of the shaft direction from the top surfaces 21, 31, and 41, and rear surfaces 23, 33, and 43 that are inclined to a rear side of the shaft direction from the top surfaces 21, 31, and 41. A projection amount to the cross direction in the plurality of convex parts 20, 30, and 40 is larger in the convex part at the rear side of the shaft direction.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to a terminal fitting and a connector. [Background technology]

[0002] Patent Document 1 discloses a terminal fitting including a terminal body and a press-fit protrusion protruding from the terminal body in a direction perpendicular to the longitudinal direction of the terminal. The press-fit protrusion has a front convex portion and a rear convex portion. The press-fit protrusion is press-fitted into a terminal holding hole of a housing. Patent Documents 2 to 4 also disclose terminal fittings with a similar configuration. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-235762 [Patent Document 2] International Publication No. 2009 / 22604 [Patent Document 3] Japanese Patent Application Publication No. 2018-125225 [Patent Document 4] Japanese Patent Application Laid-Open No. 2009-16148 [Patent Document 5] Japanese Patent Application Laid-Open No. 2016-18595 Summary of the Invention [Problem to be solved by the invention]

[0004] There is a demand for a configuration that can further improve the holding force of the terminal fittings disclosed in Patent Documents 1 to 5 when they are inserted into the insertion holes of the housing.

[0005] Therefore, the present disclosure provides a technique that can improve the holding force of a terminal fitting. [Means for solving the problem]

[0006] The terminal fitting of the present disclosure comprises: a terminal body portion extending in an axial direction; a plurality of protrusions protruding from the terminal body in a direction intersecting the axial direction; Equipped with the plurality of protrusions are arranged side by side in the axial direction, and each has a top surface along the axial direction, a front surface inclined from the top surface to a front side in the axial direction, and a rear surface inclined from the top surface to a rear side in the axial direction, The protrusion amounts in the intersecting direction of the plurality of protrusions are greater toward the rear in the axial direction.

[0007] The connector of the present disclosure comprises: The above terminal fitting, a housing provided with an insertion hole into which the terminal metal fitting is disposed; Equipped with The protrusion is engaged with the insertion hole. [Effects of the Invention]

[0008] According to the present disclosure, the holding force of the terminal fitting can be improved. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a perspective view showing a terminal fitting. [Figure 2] FIG. 2 is a plan view showing the terminal fitting. [Figure 3] FIG. 3 is a side view showing the terminal fitting. [Figure 4] FIG. 4 is an enlarged view of the terminal fitting as seen from the tip side. [Figure 5] FIG. 5 is a cross-sectional view of the insertion hole and its surrounding area before the terminal fitting is inserted into the housing. [Figure 6] FIG. 6 is a cross-sectional view of the insertion hole and its surrounding area in a state where the terminal fitting is inserted in the housing. [Figure 7] FIG. 7 is an enlarged view of the terminal fitting as seen from the tip end side, showing the terminal fitting inserted into the insertion hole of the housing. [Figure 8] FIG. 8 is a perspective view showing the connector. DETAILED DESCRIPTION OF THE INVENTION

[0010] [Description of the embodiments of the present disclosure] First, embodiments of the present disclosure will be listed and described. The terminal fitting of the present disclosure comprises: (1) a terminal body portion extending in an axial direction; a plurality of protrusions protruding from the terminal body in a direction intersecting the axial direction; Equipped with the plurality of protrusions are arranged side by side in the axial direction, and each has a top surface along the axial direction, a front surface inclined from the top surface to a front side in the axial direction, and a rear surface inclined from the top surface to a rear side in the axial direction, The amount of protrusion in the transverse direction of the plurality of protrusions is greater toward the rear of the protrusion in the axial direction. According to the configuration of the present disclosure, when a terminal fitting is inserted into an insertion hole of a connector housing from the front side in the axial direction and the multiple protrusions interfere with the wall of the insertion hole, the wall portion, which has been expanded and deformed by the protrusions, enters the rear side of the rear surface of the protrusions. Furthermore, because the protrusions closer to the rear side in the axial direction protrude more in the transverse direction, the wall portion expanded and deformed by the protrusions closer to the front side in the axial direction is more easily engaged by the protrusions closer to the rear side in the axial direction. Furthermore, because the top surfaces of the protrusions are configured to extend along the axial direction, it is easier to ensure a contact surface with the wall of the insertion hole. This improves the retention force of the terminal fitting in the connector housing.

[0011] (2) It is preferable that a connecting portion with rounded corners is provided at a portion where the top surface and the front surface are connected and at a portion where the top surface and the rear surface are connected. With this configuration, compared to a configuration in which the portion where the top surface and the front surface connect and the portion where the top surface and the rear surface connect are angular, the wall portion of the insertion hole can be more easily pushed open and deformed by the convex portion, and the deformation of the wall portion of the insertion hole pushed open by the convex portion can more easily return to its original state after the convex portion has passed.

[0012] (3) It is preferable that the inclination angle of the front surfaces of the plurality of protrusions is larger toward the rear of the protrusions in the axial direction. With this configuration, the front faces of the protrusions with a relatively small inclination angle among the plurality of protrusions first spread the wall of the insertion hole, so insertion resistance is relatively small and it is easy to insert the terminal fitting smoothly. A protrusion with a relatively large protrusion amount in the cross direction spreads the wall of the insertion hole relatively more, but the relatively large inclination angle of the front face makes it easy to spread the wall of the insertion hole.

[0013] (4) It is preferable that the terminal body has a bottom surface extending along the axial direction on the rear side of the rear surface of the protrusion. According to this configuration, the terminal body can be provided with a bottom surface that ensures a sufficient length in the axial direction, making it easier to insert the wall portion of the insertion hole behind the rear surface of the protrusion.

[0014] The connector of the present disclosure comprises: A terminal fitting according to any one of (1) to (4), a housing provided with an insertion hole into which the terminal metal fitting is disposed; Equipped with The protrusion is engaged with the wall of the insertion hole. According to this configuration, a connector that achieves the same effects as the above-mentioned terminal fitting can be realized.

[0015] [Details of the embodiments of the present disclosure] [Example 1] A first embodiment of a terminal fitting according to the present disclosure will be described with reference to Figures 1 to 8. In this first embodiment, the axial direction of the terminal fitting 10 corresponds to the front-to-rear direction. The tip end of the axial direction of the terminal fitting 10 corresponds to the front side (the side indicated by the arrow F in Figures 2 and 6), and the side opposite to the tip end corresponds to the rear side (the side indicated by the arrow R in Figures 2 and 6).

[0016] (Terminal metal fitting configuration) The terminal fitting 10 of the first embodiment is a so-called male terminal, as shown in Fig. 1. The terminal fitting 10 is formed by punching out a conductive metal plate made of, for example, copper or a copper alloy by press working. The surface of the terminal fitting 10 may be plated.

[0017] As shown in Figures 1 to 3, the terminal fitting 10 is shaped as a solid rectangular bar that extends elongatedly in the axial direction (front-to-back direction) as a whole. The terminal fitting 10 has a terminal body 11 that is shaped like a solid rectangular bar and extends in the axial direction. The terminal body 11 has a tab 12 at the front and a board connection portion 13 at the rear. The board connection portion 13 is inserted into a connection hole (not shown) of a printed circuit board and is electrically connected to a conductive portion of the printed circuit board. The board connection portion 13 can be bent as necessary.

[0018] The terminal body 11 includes a press-fit portion 14 and a stopper portion 15 between the tab 12 and the board connection portion 13. The press-fit portion 14 is press-fitted into an insertion hole 51 provided in a housing 50 (see FIGS. 5 to 7). The housing 50 is made of, for example, resin. The press-fit portion 14 includes a plurality of protrusions 20, 30, and 40. The protrusions 20, 30, and 40 protrude from the terminal body 11 in a direction intersecting the axial direction (front-rear direction). The protrusions 20, 30, and 40 are provided on both sides of the terminal body 11 in the intersecting direction. The protrusions 20, 30, and 40 are arranged in a sawtooth pattern in the axial direction. As shown in FIG. 6, when the press-fit portion 14 is press-fitted into the insertion hole 51, the protrusions 20, 30, and 40 bite into and engage with wall portions 52 of the insertion hole 51, thereby holding the terminal fitting 10 in the housing 50 in a non-disconnecting state. The board connection portion 13 is exposed to the outside of the housing 50 .

[0019] As shown in Fig. 1, the stopper portion 15 is located behind the press-fit portion 14 and is provided with a pair of protruding portions 16. As shown in Fig. 6, the press-fit portion 14 is inserted into the insertion hole 51 from behind, and the pair of protruding portions 16 abuts and stops against the rear surface 53 of the housing 50, thereby determining the mounting position of the terminal fitting 10 relative to the housing 50. When the terminal fitting 10 is mounted in the housing 50, the tab 12 is positioned to protrude into a hood (not shown) of the housing 50.

[0020] The upper and lower surfaces of the terminal body 11, the press-fit portion 14, and the stopper portion 15 shown in FIG. 3 are all flat along the axial direction and are arranged parallel to each other.

[0021] The side surfaces of the tab 12 (surfaces along the top and bottom as shown in FIG. 4) are all formed parallel to the top and bottom direction as shown in FIG. 4. The four corners of the tab 12 are chamfered. The tip (front end) of the tab 12 is formed so as to have a tapered diameter. The tapered tip allows the terminal fitting 10 to be easily press-fitted into the insertion hole 51 of the housing 50.

[0022] (Configuration of press-fit part) The multiple protrusions 20, 30, 40 are also referred to as the first protrusion 20, the second protrusion 30, and the third protrusion 40, respectively, in the order in which they are arranged from the tip side (front side) to the opposite side (rear side) in the axial direction (front-rear direction). The first protrusions 20, the second protrusions 30, and the third protrusions 40 are arranged so that adjacent protrusions are spaced apart. Note that, below, the first protrusions 20, the second protrusions 30, and the third protrusions 40 on one side of the press-fit portion 14 in the intersecting direction (the upper side in FIG. 2) will be described, but the first protrusions 20, the second protrusions 30, and the third protrusions 40 on the other side of the intersecting direction (the lower side in FIG. 2) have the same configuration.

[0023] As shown in FIG. 2 , the first convex portion 20 has a top surface 21, a front surface 22, and a rear surface 23. The top surface 21 is aligned along the axial direction. More specifically, the top surface 21 is a flat surface perpendicular to the intersecting direction. The front surface 22 is inclined from the top surface 21 toward the front side in the axial direction. That is, the front surface 22 is inclined downward toward the front side in the axial direction. The rear surface 23 is inclined from the top surface 21 toward the rear side in the axial direction. That is, the rear surface 23 is inclined downward toward the rear side in the axial direction.

[0024] 2, the second protrusion 30 also has a top surface 31, a front surface 32, and a rear surface 33 configured similarly to the top surface 21, the front surface 22, and the rear surface 23 of the first protrusion 20. The third protrusion 40 also has a top surface 41, a front surface 42, and a rear surface 43 configured similarly to the top surface 21, the front surface 22, and the rear surface 23 of the first protrusion 20.

[0025] As shown in FIG. 6 , when the terminal fitting 10 is inserted into the insertion hole 51 of the housing 50 from the axial front side, the multiple protrusions 20, 30, 40 interfere with the wall portion 52 of the insertion hole 51. Here, the insertion direction of the terminal fitting 10 into the insertion hole 51 is along the axial direction. The wall portion 52, which is expanded and deformed by the protrusions 20, 30, 40, enters between adjacent protrusions (more specifically, behind the rear surfaces 23, 33, 43 of the protrusions 20, 30, 40, respectively). The wall portion 52 that enters behind the rear surface 23 of the first protrusion 20 is engaged with the front surface 32 of the second protrusion 30. The wall portion 52 that enters behind the rear surface 33 of the second protrusion 30 is engaged with the front surface 42 of the third protrusion 40.

[0026] Since the top surfaces 21, 31, and 41 are along the axial direction, it becomes easier to secure a contact surface with the wall portion 52 of the insertion hole 51. Also, since the tips of the convex portions 20, 30, and 40 are not sharp, the load on the wall portion 52 of the insertion hole 51 can be dispersed, and cracking or chipping of the wall portion 52 during insertion or holding can be suppressed. Since the front surfaces 22, 32, and 42 are inclined toward the front side in the axial direction, the wall portion 52 of the insertion hole 51 can be smoothly expanded while being difficult to damage. Since the rear surface 23 is inclined toward the rear side in the axial direction, it becomes easier to press the wall portion 52 of the insertion hole 51 that enters the rear side of the rear surface 23 against the front surface 32 of the second convex portion 30 located on the rear side. Since the rear surface 33 is inclined toward the rear side in the axial direction, it becomes easier to press the wall portion 52 of the insertion hole 51 that enters the rear side of the rear surface 33 against the front surface 42 of the third convex portion 40 located on the rear side. Therefore, the holding force of the terminal fitting 10 with respect to the housing 50 can be improved.

[0027] As shown in FIG. 2, the amount of protrusion in the intersecting direction of the plurality of convex portions 20, 30, and 40 is larger for the convex portions on the rear side in the axial direction. Specifically, assuming that the amount of protrusion of the first convex portion 20 in the orthogonal direction orthogonal to the axial direction is H1, the amount of protrusion of the second convex portion 30 in the orthogonal direction is H2, and the amount of protrusion of the third convex portion 40 in the orthogonal direction is H3, the relationship is H1 < H2 < H3. Thus, since the amount of protrusion in the intersecting direction is larger for the convex portions on the rear side in the axial direction, it becomes easier to secure the locking margin between the wall portion 52 of the insertion hole 51 that is expanded and deformed by the convex portion on the front side in the axial direction and the convex portion on the rear side in the axial direction. Therefore, the holding force of the terminal fitting 10 with respect to the housing 50 can be improved.

[0028] As shown in FIG. 2 , the first protrusion 20 has a connecting portion 24 with rounded corners where the top surface 21 and the front surface 22 are connected. The connecting portion 24 is curved and convex outward in the transverse direction (the opposite side to the terminal body 11). Compared to a configuration in which the portion where the top surface 21 and the front surface 22 are connected is angular, the first protrusion 20 can more easily expand and deform the wall portion 52 of the insertion hole 51. The first protrusion 20 has a connecting portion 25 with rounded corners where the top surface 21 and the rear surface 23 are connected. The connecting portion 25 is curved and convex outward in the transverse direction (the opposite side to the terminal body 11). Compared to a configuration in which the portion where the top surface 21 and the rear surface 23 are connected is angular, the wall portion 52 of the insertion hole 51, which has been expanded by the first protrusion 20, can more easily return to its original shape after the first protrusion 20 has passed through.

[0029] 2, the second protrusion 30 also has connecting portions 34, 35 configured similarly to the connecting portions 24, 25 of the first protrusion 20. The third protrusion 40 also has connecting portions 44, 45 configured similarly to the connecting portions 24, 25 of the first protrusion 20.

[0030] As shown in FIG. 2 , the inclination angle (inclination angle from the axial direction) of the front surfaces of the multiple protrusions 20, 30, and 40 increases toward the rear of the protrusions in the axial direction. Specifically, if the inclination angle of the front surface 22 of the first protrusion 20 is θ1, the inclination angle of the front surface 32 of the second protrusion 30 is θ2, and the inclination angle of the front surface 42 of the third protrusion 40 is θ3, then the relationship θ1<θ2<θ3 holds. The front surface 22 of the first protrusion 20, which has a relatively small inclination angle among the multiple protrusions 20, 30, and 40, first spreads the wall portion 52 of the insertion hole 51. This reduces insertion resistance and facilitates smooth insertion of the terminal fitting 10. The protrusions 30 and 40, which protrude relatively far in the intersecting direction, spread the wall portion 52 of the insertion hole 51 by a relatively large amount. However, the relatively large inclination angle of the front surfaces 32 and 42 makes it easier to spread the wall portion 52 of the insertion hole 51.

[0031] As shown in FIG. 2, the inclination angles (angles of inclination from the axial direction) of the rear surfaces of the plurality of convex portions 20, 30, 40 are larger for the convex portions on the rear side in the axial direction. Specifically, if the inclination angle of the rear surface 23 of the first convex portion 20 is θ4, the inclination angle of the rear surface 33 of the second convex portion 30 is θ5, and the inclination angle of the rear surface 43 of the third convex portion 40 is θ6, then the relationship θ4 < θ5 < θ6 holds.

[0032] As shown in FIG. 2, on the rear side of the rear surface 23 of the first convex portion 20 in the terminal body portion 11, a bottom surface 26 is provided. The bottom surface 26 is along the axial direction. More specifically, the bottom surface 26 is a flat surface orthogonal to the intersection direction. A bottom surface 26 capable of securing a length in the axial direction can be arranged on the rear side of the rear surface 23 of the first convex portion 20, making it easier for the wall portion 52 of the insertion hole 51 to enter the rear side of the rear surface 23 of the first convex portion 20. On the rear side of the rear surface 33 of the second convex portion 30 in the terminal body portion 11, a bottom surface 36 having the same configuration as the bottom surface 26 is also provided. On the rear side of the rear surface 43 of the third convex portion 40 in the terminal body portion 11, a bottom surface 46 having the same configuration as the bottom surface 26 is also provided.

[0033] As shown in FIG. 2, the bottom surfaces located on the rear side in the axial direction have a greater length along the axial direction. Specifically, if the length of the bottom surface 26 along the axial direction is L1, the length of the bottom surface 36 along the axial direction is L2, and the length of the bottom surface 46 along the axial direction is L3, then the relationship L1 < L2 < L3 holds. Thereby, the wall portion 52 of the deformed insertion hole 51 is more likely to approach the rear bottom surfaces.

[0034] As shown in FIG. 2, the portion where the rear surface 23 of the first convex portion 20 and the bottom surface 26 are continuous is curved. Similarly, the portion where the rear surface 33 of the second convex portion 30 and the bottom surface 36 are continuous is curved. Similarly, the portion where the rear surface 43 of the third convex portion 40 and the bottom surface 46 are continuous is curved.

[0035] As shown in FIG. 2, the portion where the bottom surface 26 and the front surface 32 of the second convex portion 30 are continuous is curved. Similarly, the portion where the bottom surface 36 and the front surface 42 of the third convex portion 40 are continuous is curved.

[0036] (Connector configuration) As shown in Fig. 8, the connector 100 of the first embodiment includes a terminal fitting 10 and a housing 50. The housing 50 is provided with an insertion hole 51 in which the terminal fitting 10 is disposed. As shown in Fig. 6, the protrusions 20, 30, and 40 are engaged with a wall portion 52 of the insertion hole 51.

[0037] (Effects of Example 1) In the terminal fitting 10 of the first embodiment, the plurality of protrusions are arranged side by side in the axial direction, and each protrusion has a top surface along the axial direction, a front surface inclined from the top surface toward the front side in the axial direction, and a rear surface inclined from the top surface toward the rear side in the axial direction, The amount of protrusion in the cross direction of multiple convex parts is greater the further back in the axial direction the convex part is. According to the configuration of the present disclosure, when the terminal fitting 10 is inserted into the insertion hole 51 of the housing 50 from the axial front side and the multiple protrusions 20, 30, 40 interfere with the wall portion 52 of the insertion hole 51, the wall portion 52, which has been expanded and deformed by the protrusions 20, 30, 40, enters the rear side of the rear surfaces 23, 33, 43 of the protrusions 20, 30, 40. Furthermore, since the protrusions closer to the rear in the axial direction protrude more in the intersecting direction, the wall portion 52, which has been expanded and deformed by the protrusions closer to the front in the axial direction, is more easily engaged by the protrusions closer to the rear in the axial direction. Furthermore, since the top surfaces 21, 31, 41 of the protrusions 20, 30, 40 are configured along the axial direction, it is easier to ensure a contact surface with the wall portion 52 of the insertion hole 51. This improves the retention force of the terminal fitting 10 in the housing 50.

[0038] Furthermore, in the first convex portion 20, connecting portions 24, 25 with rounded corners are provided at the portion where the top surface 21 and the front surface 22 are connected and at the portion where the top surface 21 and the rear surface 23 are connected, respectively. Compared to a configuration in which the portion where the top surface 21 and the front surface 22 are connected is angular, the wall portion 52 of the insertion hole 51 can be more easily pushed open and deformed by the first convex portion 20. Compared to a configuration in which the portion where the top surface 21 and the rear surface 23 are connected is angular, the deformation of the wall portion 52 of the insertion hole 51 pushed open by the first convex portion 20 can more easily return to its original shape after the first convex portion 20 has passed. The second convex portion 30 and the third convex portion 40 also have the same effect.

[0039] Furthermore, the inclination angle of the front surfaces of the plurality of protrusions 20, 30, 40 is greater toward the rear of the protrusions in the axial direction. Therefore, the wall 52 of the insertion hole 51 is first pushed open by the front surface 22 of the first protrusion 20, which has a relatively small inclination angle among the plurality of protrusions 20, 30, 40, so insertion resistance is relatively small and the terminal fitting 10 can be easily inserted. The second protrusion 30 and the third protrusion 40, which protrude relatively large amounts in the intersecting direction, push open the wall 52 of the insertion hole 51 by a relatively large amount, but the relatively large inclination angles of the front surfaces 32, 42 make it easier to push open the wall 52 of the insertion hole 51.

[0040] Furthermore, bottom surfaces 26, 36, 46 extending along the axial direction are provided on the rear side of the rear surfaces 23, 33, 43 of the protrusions 20, 30, 40 in the terminal body 11. With this configuration, the bottom surfaces 26, 36, 46 can be arranged in the terminal body 11 such that the axial length can be secured, making it easier to insert the wall portions 52 of the insertion holes 51 into the rear sides of the rear surfaces 23, 33, 43 of the protrusions 20, 30, 40.

[0041] [Other Examples] The present invention is not limited to the examples described above and in the drawings, but is defined by the claims. The present invention includes the equivalent meaning of the claims and all modifications within the scope of the claims, and is intended to include the following embodiments. In the first embodiment, the terminal fitting 10 is illustrated as having three protrusions 20, 30, 40, but may have two or four or more protrusions. In the first embodiment, the terminal body 11 is in the shape of a square rod, but it may be in another shape such as a cylindrical shape. In the first embodiment, the protrusion amounts in the intersecting direction of the first protrusions 20 and the second protrusions 30 may be the same, or the second protrusions 30 and the third protrusions 40 may be the same. In the first embodiment, the inclination angle of the front surface of the protrusion may be the same for the first protrusion 20 and the second protrusion 30, or may be the same for the second protrusion 30 and the third protrusion 40. [Explanation of symbols]

[0042] 10...Terminal fitting 11...Terminal body 12...Tab 13...Board connection part 14...Press-fit part 15...Stopper part 16…Protrusion 20...First convex part 21…Top surface 22...Front 23…Rear side 24,25...Connecting section 26...Bottom 30...Second convex part 31…Top surface 32...Front 33…Rear side 34, 35...Connecting section 36...Bottom 40...Third convex part 41...Top surface 42...Front 43…Rear side 44,45...Connecting section 46...Bottom 50…Housing 51...insertion hole 52...Wall part 53…Rear side 100...Connector

Claims

1. a terminal body portion extending in an axial direction; a plurality of protrusions protruding from the terminal body in a direction intersecting the axial direction; Equipped with the plurality of protrusions are arranged side by side in the axial direction, and each has a top surface along the axial direction, a front surface inclined from the top surface to a front side in the axial direction, and a rear surface inclined from the top surface to a rear side in the axial direction, the plurality of protrusions include a first protrusion, a second protrusion, and a third protrusion arranged from the front side to the rear side, a protrusion amount of the first convex portion in the intersecting direction, a protrusion amount of the second convex portion in the intersecting direction, and a protrusion amount of the third convex portion in the intersecting direction increase in this order; an inclination angle of the front surface of the first convex portion with respect to the axial direction, an inclination angle of the front surface of the second convex portion with respect to the axial direction, and an inclination angle of the front surface of the third convex portion with respect to the axial direction increase in this order, the terminal body is provided with a first flat bottom surface along the axial direction on the rear side of the rear surface of the first protrusion, a second flat bottom surface along the axial direction on the rear side of the rear surface of the second protrusion, and a third flat bottom surface along the axial direction on the rear side of the rear surface of the third protrusion, The terminal fitting has a length along the axial direction that increases in the order of the first bottom surface, the second bottom surface, and the third bottom surface.

2. a protruding portion located behind the plurality of protrusions in the terminal body and protruding in the intersecting direction; 2. The terminal fitting according to claim 1, wherein a flat bottom surface is also provided along the axial direction between the rearmost protrusion and the protrusion.

3. 3. The terminal fitting according to claim 1, wherein a connecting portion with rounded corners is provided at a portion where the top surface and the front surface are connected and at a portion where the top surface and the rear surface are connected.

4. The terminal fitting according to any one of claims 1 to 3, a housing provided with an insertion hole into which the terminal metal fitting is disposed; Equipped with The connector has the protrusion engaged with the wall of the insertion hole.

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