JPH0718369U - Terminal holding structure for electrical connector - Google Patents

Abstract

(57) [Abstract] [Purpose] Electricity for holding a terminal in the terminal receiving passage with a high holding force by the concave and convex engagement of the engaging portion formed in the terminal and the engaging portion formed in the terminal receiving passage. The terminal holding structure of the connector is not easily damaged, and the terminal can be easily inserted without significantly damaging the inner surface of the terminal receiving passage. [Configuration] Protrusions 31 and 32 are formed on the terminal 30 held by the connector housing 1. In the terminal receiving passage 10 of the housing 1, engaging shoulders 11 and 12 corresponding to the protrusions 31 and 32 of the terminal 30 are provided.
Is provided. Further, the housing 1 is provided with a slot 40 extending in the vicinity of the engaging shoulder 11 along the terminal row independently of the terminal receiving passages 20, and when the terminal 30 is inserted, the engaging shoulder 11 is inserted.
By bending the engaging portion 13 to the slot 40 side, the terminal receiving passage 10 and the protrusion 31 can be engaged without being damaged.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a structure for holding terminals in a terminal receiving passage formed in a plurality of lines in a housing of an electrical connector, more specifically, a terminal side engaging portion formed on the terminal and an inner surface of the terminal receiving passage. The present invention relates to a terminal holding structure for an electric connector, which holds a terminal by means of a concave-convex engagement with a passage-side engaging portion formed in.

[0002]

[Prior art]

 This type of terminal holding structure can be used widely in various electrical connectors because it can obtain a higher terminal holding force compared to a terminal that is simply press-fitted into the terminal receiving passage. If both the engaging part and the passage-side engaging part are fixed (do not move), a strong force is required when inserting the terminal into the terminal receiving passage, and the inner surface of the terminal receiving passage is There is a problem in that it easily slides and is easily scratched.

Therefore, generally, for example, as described in Japanese Utility Model Laid-Open No. 59-49373, a portion of a terminal receiving passage where a passage side engaging portion is formed (hereinafter, simply referred to as an engaging forming portion) is formed. In many cases, the terminal is configured to bend when it is inserted. By making the engagement forming portion flexible in this way, the terminal can be easily inserted without significantly damaging the inner surface of the terminal receiving passage.

[0004]

[Problems to be solved by the device]

 By the way, a conventional method generally used to make the engagement forming portion flexible is to provide a slot connected to the terminal receiving passage for each terminal receiving passage to separate the engagement forming portion. It was formed into a cantilever shape. However, the cantilever-shaped engagement forming portion has a problem that it is easily damaged.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a terminal holding structure for an electric connector, in which a terminal can be easily inserted without seriously damaging the inner surface of the terminal receiving passage and is not easily damaged. To do.

[0006]

[Means for Solving the Problems]

 A terminal holding structure for an electrical connector according to the present invention is configured such that a plurality of terminal receiving passages, which are formed by arranging a plurality of parts in a connector housing, are engaged with a terminal engaging portion of the terminal. In a terminal holding structure for an electrical connector, in which a passage-side engaging portion is formed, the passage-side engaging portion is formed on a surface along an alignment direction of the terminal receiving passage, and the passage-side engaging portion forming surface. A slot, which extends independently of the terminal receiving passage along the alignment direction and allows the portion where the passage-side engaging portion is formed to bend, is formed at a position close to Is characterized by.

[0007]

[Effect of action and device]

 In the terminal holding structure of the electric connector according to the present invention, the slot is provided at a position close to the passage-side engaging portion forming surface, and the portion where the passage-side engaging portion is formed (engagement forming portion) has the terminal inserted. Since it is designed to bend when it is touched, the terminal can be inserted easily without significantly damaging the inner surface of the terminal receiving passage. Moreover, since the slot is provided independently of the terminal receiving passage, the engagement forming portion does not have a cantilever shape, but has a shape that constitutes one wall surface portion of the terminal receiving passage. For this reason, the engagement forming portion is not easily damaged.

The above-mentioned slots may be provided separately corresponding to the aligned terminal receiving passages, but if one continuous slot corresponding to a plurality of terminal receiving passages is provided, the structure is formed. It is preferable that it can be simplified.

[0009]

【Example】

 An embodiment of a terminal holding structure for an electric connector according to the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a view of a housing of an electric connector to which the present invention is applied as seen from the fitting surface side, and FIG. 2 is a sectional view taken along the line II-II in FIG.

As shown in the figure, the connector housing 1 is formed with a plurality of terminal receiving passages 10 aligned in a row in the center thereof. The connector housing 1 also has a plurality of other terminal receiving passages 20 arranged in a row in the lower part of the row of the terminal receiving passages 10. The lower terminal receiving passage 20 has a conventional structure that merely holds the press-fitted terminals (not shown).

The configuration of the upper terminal receiving passage 10 is enlarged and shown in FIG. FIG. 4 shows the terminal held in the terminal receiving passage 10. 4A is a view of the terminal seen from above, and FIG. 4B is a view of the terminal shown in FIG. 4A seen from the front side.

As shown in FIG. 4, wedge-shaped protrusions 31 and 32 as terminal-side engaging portions are formed on the upper surface and the lower surface of the terminal 30 at a predetermined distance in the length direction of the terminal 30. There is. On the other hand, shoulders 11 and 12 as passage-side engaging portions that engage with the protrusions 31 and 32 of the terminal 30 are formed on the upper surface and the lower surface of the terminal receiving passage 10, respectively. As shown in FIG. 1, the terminal receiving passage 10 is linearly extended in the alignment direction of the terminal receiving passage 10 (a direction perpendicular to the paper surface in FIG. 3) immediately above the terminal receiving passage 10 independently of the terminal receiving passage 10. Slot 40 is formed.

FIG. 5 shows a state in which the terminal 30 is held in the terminal receiving passage 10. The terminal 30 is inserted from the insertion port 14 of the terminal receiving passage 10 shown in FIG. When the terminal 30 is inserted, the projections 31 and 32 of the terminal 30 are in sliding contact with the upper surface and the lower surface of the terminal receiving passage 10, respectively. However, since the slot 40 is formed, the shoulder 11 is not inserted when the terminal 30 is inserted. Since the formed portion (shoulder forming portion) 13 bends, the inner surface of the terminal receiving passage 10 is not easily scratched. Further, since the shoulder forming portion 13 is not in the shape of a cantilever, it is hard to break.

The terminal 30, which is inserted into the terminal receiving passage 10 while bending the shoulder forming portion 13, has the projections 31 and 32 that engage with the shoulders 11 and 12 of the terminal receiving passage 10, respectively. It is held in the passage 10 with high holding power. A taper-shaped guide surface 15 and a step 16 are formed in the insertion port 14 of the terminal receiving passage 10, while the terminal 30 is guided by the guide surface 15 at the time of insertion as shown in FIG. The overhang portion 33 is formed. When the terminal 30 is held in the terminal receiving passage 10, the protruding portion 33 is in contact with the step 16, so that the terminal 30 is firmly fixed in the terminal receiving passage 10.

FIGS. 6 and 7 show the connector housing in which terminals are held in the respective terminal receiving passages. 6 is a plan view of the connector housing, and FIG. 7 is a sectional view taken along line VII-VII in FIG. Note that, in FIG. 7, the configuration of the part to which the present invention is applied is omitted.

As shown in FIG. 7, the terminal 30 held in the upper terminal receiving passage 10 and the terminal 50 held in the lower terminal receiving passage 20 are formed by bending downward in the figure, and further, The lower end portion 30a is bent leftward in the drawing, and the lower end portion 50a of the terminal 50 is bent rightward in the drawing. The terminal 30 is preliminarily bent and bent before being inserted into the terminal receiving passage 20, whereas the terminal 50 is bent and bent after being inserted into the terminal receiving passage 10 from the right side in the drawing.

The lower end portion 30a of the terminal 30 and the lower end portion 50a of the terminal 50 are configured to be soldered to the substrate, respectively. The soldered terminal is shown in FIG. 9 is a sectional view taken along line IX-IX in FIG.

As shown in FIG. 8, the lower end portion 30 a of the terminal 30 and the lower end portion 50 a of the terminal 50 are soldered to the board 60, respectively. If the coefficient of thermal expansion of the connector housing 1 is different from that of the board 60, cracks are likely to occur in the soldered portions of the terminals 30 and 50 due to temperature changes in the environment. In particular, the lower terminal 50, which has a short distance from the housing 1 to the mounting position on the board 60, is easily affected by the relative displacement between the housing 1 and the board 60 due to thermal expansion, and stress concentrates on the soldered portion. Cracks easily. In consideration of this point, the electrical connector shown in FIG. 8 has the lower end portion 50a of the lower terminal 50 bent in the opposite direction of the lower end portion 30a of the upper terminal 30 and the mounting position of the terminal 50 from the housing 1 to the substrate 60. I try to secure a distance to. Further, as shown in FIG. 9, the lower end portion 50a of the lower terminal 50 is formed wider than the lower end portion 30a of the upper terminal 30 to increase the soldering area.

As described above, the upper terminal 30 is formed by bending it in advance and is inserted into the connector housing 1. For this reason, the positioning accuracy to the substrate 60 is higher than that of the lower terminal 50 that is inserted into the housing 1 and then bent.

Although the embodiments of the terminal holding structure of the electric connector according to the present invention have been described above, the present invention is not limited to the specific modes of the embodiments, and it goes without saying that various modifications can be made. .

[Brief description of drawings]

FIG. 1 is a view of a housing of an electrical connector to which the present invention is applied, viewed from a mating surface side.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is an enlarged cross-sectional view of the upper terminal receiving passage shown in FIG.

FIG. 4 is a diagram showing a configuration of terminals.

5 is a view showing a state where the terminal is inserted into the terminal receiving passage shown in FIG.

FIG. 6 is a plan view of an electric connector housing provided with terminals.

7 is a sectional view taken along line VII-VII in FIG.

FIG. 8 is a view showing a mounting state of terminals and a board.

9 is a sectional view taken along line IX-IX in FIG.

[Explanation of symbols]

 1 Connector housing 10,20 Terminal receiving passage 11,12 Shoulder (passage side engaging part) 13 Shoulder forming part 30,50 Terminal 31,32 Protrusion (terminal side engaging part) 40 Slot

Claims (1)

[Scope of utility model registration request] 1. A passage-side engaging portion that engages with a terminal-side engaging portion of the terminal in a concavo-convex manner is formed on an inner surface of a terminal receiving passage that is formed in alignment with a connector housing and that receives a terminal. In the terminal holding structure of the electrical connector, the passage-side engaging portion is formed on a surface along the alignment direction of the terminal receiving passage, and the alignment is provided at a position close to the passage-side engaging portion forming surface. A terminal holding structure for an electrical connector, characterized in that a slot is formed that extends along the direction independently of the terminal receiving passage and allows the portion in which the passage-side engaging portion is formed to bend. .