JPS58115780A - Blade retaining spring for connector - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] The present invention provides that when the plug of an electrical device is inserted,
The purpose of the blade holder spring, which is located in a connector that connects the plug to a power source and is mainly used by being attached to a wall, and which holds the blade of the plug and makes a conductive connection. The plug can be inserted and removed smoothly.

Another aspect is to provide a blade retaining spring that maintains an electrical connection.

As shown in FIG. 1, such a conventional blade receiving spring for a connector includes a blade receiving piece in which each arm portion 8 projects downward from both ends 2 of the upper surface of a terminal portion 1 having a downward C-shaped cross section, and its protruding end 45r is the base end. 5 is formed adjacent to the outside of the arm portion 3.

The blade receiving piece 6 narrows the gap upward to form the contact part 6 of the plug blade, and widens upward from the contact part 6 to form the guide part 51. The force when inserting the plug blade and pushing open the space between both arms 8 is strong at the inner end and weak at the outer end. Therefore, a slight change in the shape and dimensions of the inner end causes a large change in the input force.

Naturally, the contact holding force will also change, making it difficult to insert and remove the plug blade smoothly, and in extreme cases, it may damage the connector or the plug.

The present invention was made in view of such circumstances.

1. The blade holder spring for connectors of the present invention will be explained with reference to FIGS.
The terminal portion 1 with the orientation 0 has each arm portion 8 projected downward from both ends 2 of the upper surface, and the blade receiving piece 5 is connected to the arm portion 8 with the protruding end 4 as the base end.
The blade receiving pieces 5 are formed adjacent to each other on the outside, and the gap is reduced upward to form the contact portion 6 of the blade.
The guide part 5 of the plug blade is made wider upward than the contact part 6. The gap is made larger at the inner end 8 on the terminal part 1 side of the contact part 6, and the gap is made smaller at the outer end 7. are doing. The outer end 7 side may be in contact with each other.

Further, the minimum gap position of the outer end 7 is located below the inner end 8. A retaining hole 5b with the auxiliary spring 9 is formed on both sides of the blade receiving piece 5.

An auxiliary spring 9 having a U-shaped cross section is assembled to the blade receiving piece 5 in an exterior state. As shown in FIG. 4, the auxiliary spring 9 decreases the gap between both arms toward the top to form a minimum-length portion. As with the blade receiving spring 5, the minimum gap is made larger at the inner end and smaller at the outer end. Furthermore, contrary to the blade receiving piece 5, the minimum gap position at the inner end is located above the outer end. In addition, an insertion hole 12 is formed on the bottom surface through which the protrusion l- of the body W that receives the blade receiving piece 6 is inserted, and a retaining protrusion U that engages with the blade receiving piece 6 is formed on the inner surface.

The blade receiving piece 6 formed as described above and the auxiliary spring 9 are combined as shown in FIGS. 5 and 6 to constitute the blade receiving portion tin. FIG. 6 shows a state in which the blade receiver and the auxiliary spring 9 are engaged, and the engagement protrusion n of the auxiliary spring 9 is fitted into the engagement hole 5b of the blade receiver 5. The protrusions and holes may be provided in opposite directions. Next, as shown in FIGS. 6 to 8, the protrusion 1@ provided on the bottom surface of the body 10 is inserted into the insertion hole ν provided in the auxiliary spring 9.

The protrusion l side comes into contact with the lowermost end of the blade receiving piece 6, and has the function of receiving the force that moves the blade receiving piece 6 downward when the blade is inserted. When the blade is inserted into the blade receiving part 4 combined as described above, the blade is positioned by the guide part 5 of the blade receiving piece 6, and then it enters the contact part 6. In the conventional example in which the blade receiving piece 5 is not used as a taper, the inner end 8 is inserted and the pressure is large, but 1
In the present invention, since the contact portion 6 of the blade receiving piece 5 has a large gap at the inner end 8, the book feeding pressure can be reduced. On the other hand, since the outer end 7 has a small gap, the contact pressure is greater than that of the conventional example. At this time, the auxiliary spring 9 holds the blade receiving piece 6 more strongly at the outer end than at the inner end.

As described above, according to the present invention, each arm protrudes downward from both ends of the upper surface of the terminal portion having a downward U-shaped cross section, and the blade receiving piece with the protruding end as the base end is arranged adjacent to the outside of the arm. The blade receiving piece narrows the gap upward to form a contact part of the plug blade, and the contact part is widened upward to form a guide part, and the 111Ii3 contact part is formed inwardly. A connector blade in which the gap is made larger at the end and the gap is made smaller or in contact with the outer end, and the contact part of the plug blade of the blade receiver piece is reduced at the outer end and enlarged at the inner end. By using a receiving spring, the plug blade of the plug comes into soft contact at the inner end where inputting force is required, and the force of the arm piece is also reduced by -9.
Since the bending of the arm piece is large and the contact surface is large at the outer end, the blade holder of the present invention minimizes the difference in loading and contact holding force between the inner end and the outer end. When loading and unloading, the outer end is used to gently insert and release, allowing for smooth operation.In the contact state, the outer end flexibly shakes and holds to ensure contact, and the outer end Then, contact support is stronger than the inner end to keep ′ in a stable state.

In addition, each arm protrudes upward from both ends of the upper surface of the terminal portion having a U-shaped cross section, and a blade receiving piece with the protruding end as the base end is formed adjacent to the outside of the arm, and the blade receiving piece The gap is narrowed upward to form a contact part of the plug blade, and the contact part is widened upward from the contact part to form a guide part, and furthermore, the contact part has a large gap at the inner end, The blade retaining spring has a small gap at the outer end or is in close contact with each other, and is combined with an auxiliary spring having a U-shaped cross section that is sheathed on the blade retaining piece. At the same time, the gap between both arms is reduced to form a minimum gap part, and the minimum gap part is made larger at the inner end, smaller at the outer end, and further reduced to the minimum gap at the inner end. -26191. The blade holder spring is positioned in the F direction from the outer end.-26191. Of course, the auxiliary spring improves the blade retaining force of the blade holder, and since the auxiliary spring extends upward and holds the blade holder with both S arms, it sufficiently supports the proximal end of the blade holder and increases the front 86 retention force. It is possible to obtain a blade holder spring that fully takes advantage of this and has a reliable contact force. Furthermore, the auxiliary spring can also be used as a means for engaging the middle part of the J receiving piece with the inner bottom of the case while holding the J receiving piece. It is a product that can also be used for ecstasy; it becomes a blade holder spring.

[Brief explanation of drawings]

FIG. 1 is a diagram of a conventional example, and FIGS. 2 to 8 are drawings of an embodiment of the invention. 1...Terminal part, 2...Both ends of the upper surface, 8...Arm part,
4...Protruding end, 5...Blade receiving piece, 5a...Guiding part,
5b...Engagement 1°, 7...Outer end, 8...Inner end, 9...Auxiliary spring, 10...Zedi, 10a
...Protrusion, 1]...Engagement protrusion, ...Insertion hole. Patent applicant Matsu F [Ko Co., Ltd. Patent attorney Toshimaru Takemoto (and 2 others) Figure 1 Figure 3 (α) (b) CC) Figure 4 <a> Cb) <d> 2 (of

Claims (1)

[Claims] l) Each arm protrudes downward from both ends of the upper surface of the terminal portion having a downward σ-shaped cross section, and a blade receiving piece with the protruding end as the base end is formed adjacent to the outside of the arm. The blade receiving piece narrows the gap upward to form a contact part of the plug blade, and is widened upward from the contact part to form a guide part, and furthermore, the contact part has a gap at the inner end. The gap is made large, the gap is made small at the outer end, or the gap is brought into contact with each other, and the minimum gap position at the outer end is located below the inner end, and retaining holes are formed on both sides of the blade receiving piece. A connection blade holder spring characterized by: 2) Each arm protrudes downward from both ends of the upper surface of the terminal portion having a downward U-shaped cross section, and a blade receiving piece with the protruding end as the base end is formed adjacent to the outside of the arm, and the blade receiving piece is A contact part of the plug blade is formed by narrowing the gap upward, and a guide part is formed by widening upward from the contact part, and the contact part has a large gap at the inner end, and a guide part is formed by widening the contact part upward. At the other end, the interval wA7i-reduced 73. , and a blade retaining spring which is in contact with each other;
It is a combination of auxiliary springs with a U-shaped tr surface, and the auxiliary springs reduce the gap between both arms toward the top to form a minimum gap, and the minimum gap also closes the gap in the inner frame. is made larger, and the gap is made smaller at one outer end.
Furthermore, the minimum gap position of the inner end is positioned lower than the outer end, and the bottom surface is provided with an insertion hole through which the protrusion of the body that receives the blade receiver piece is inserted, and the inner surface is provided with a retaining protrusion that engages with the blade receiver piece. 1. A blade receiving spring for a connector, characterized in that: