JPH031895Y2 - - Google Patents

Description

[Detailed description of the invention] [Purpose of the invention] Industrial application field The present invention relates to a round terminal that can be connected without using screw nuts.

BACKGROUND TECHNOLOGY To connect round terminals, screw nuts must be used.For example, as shown in Fig. 7, in order to use inside an insulating box a, bolts b are fixed and two round terminals are connected together. Insert the bolt into the insertion hole e of the type terminal d and tighten it with the nut c to fix it, but due to variations in the tightening work, it is easy to over-tighten or under-tighten, which may damage the insulating box a or cause poor contact at the tightened part. There were drawbacks such as temperature rise.

Problems to be Solved by the Invention The purpose of the invention is to solve the above-mentioned problems and provide a round terminal with a structure that allows connection with constant contact pressure without using screw nuts. .

[Structure of the idea]

Means for Solving the Problems Referring to the drawings, the round terminal of the present invention has a pair of male terminals M and female terminals F as shown in FIG.
, both terminals M and F are wire connection parts, respectively.
It includes M ₁ , F ₁ and fitting portions M ₂ , F ₂ for mating terminals.

The fitting portion M ₂ of the male terminal M is formed by connecting a C-shaped conductive substrate 1 with a ring partially open to give it spring properties, and from the center O of the ring at the inner edge of the C-shaped conductive substrate 1. The contact pressure piece 2 is provided with a pair of contact pressure pieces 2 that stand upright and connected in the diametrical direction, and the contact pressure piece 2 has an upper end portion of the riser piece 2a from the inner edge parallel to the conductive substrate 1 on the outside thereof, as shown in FIG. It has a shape formed by the bent fall-off prevention piece 2b. The height of the upright piece 2a may be slightly larger than the thickness of the conductive substrate of the female terminal.

The fitting part _F2 of the female terminal F is provided with a fitting hole 4 for the pair of contact pressure pieces 2 in the conductive substrate 3, and the fitting hole 4 has the fitting hole 4 at a symmetrical position from the center O' on the inner periphery of the fitting hole 4. It has a structure in which an introduction part 4a, a receiving part 4b, and a rotation stopper 4c for the contact pressure piece 2 are sequentially formed. That is, the hole diameter of the fitting hole 4 is r, the distance between the falling-off prevention pieces 2b, 2b of the pair of contact pressure pieces 2 is _d0 , the distance between the opposing introduction parts 4a, 4a is _d1 , and the receiving part 4b,
If the distance between 4b is d ₂ , d ₀ and d ₁ are approximately equal,
Further, it is formed so that d ₁ >r>d ₂ . Receiving part 4b
When formed parallel to the fitting center line P of the female terminal F, the terminal end portion following the rotation stopper 4c is formed into a tapered constricted portion _4b1 as shown in the figure, and the contact with the contact pressure piece 2 is formed. , strengthen the mating force.

Function The contact pressure pieces 2, 2 of the male terminal M are combined with the introduction part 4a of the female terminal F as shown in Fig. 3, and rotated until the fitting center lines P and P' of both terminals coincide (Fig. 4). ).

As a result, the contact pressure piece 2 gradually comes into contact with the receiving part 4b of the fitting hole 4, and the C-shaped conductive substrate 1 of the male terminal M is bent inward against its springiness, and the constricted part 4b ₁ As a result, the deflection becomes even larger. When the contact pressure piece 2 hits the rotation stopper 4c, the fitting of both terminals M and F is completed, and they are connected to each other while maintaining a constant contact pressure, and are prevented from coming off by the falling-off prevention piece 2b. .

In this way, the fitting connection between the terminals M and F can be achieved very easily without using screw nuts, and there is no risk of over-tightening or under-tightening as in the conventional case.

Embodiments FIGS. 1 to 4 show representative examples of the present invention,
Although the contact pressure piece 2 of the male terminal M is provided on the inner edge of the C-shaped conductive substrate 1, the same effect can be obtained even if it is provided on the outer edge of the conductive substrate 1 as shown in FIG. The dimensions when assembled can be reduced.

FIG. 6 shows another embodiment of the present invention, in which the female terminal F
The receiving part 4b' in the fitting hole 4 is aligned with its fitting center line P.
The receiving portion 4b' is tapered so as to become narrower, and a step _4b2 is provided in the middle of the receiving portion 4b'.
In this case, the contact pressure piece ₂ is locked due to the presence of the step 4b2 and reverse rotation is prevented, so that a more reliable fitting connection can be obtained.

[Effect of idea]

As described above, the present invention consists of a pair of male and female terminals each having a wire connection part and a mating part for the mating terminal, and the mating part of the male terminal has a spring property by opening a part of the ring. A pair of contact pressure pieces are provided on the inner edge or outer edge of the C-shaped conductive substrate, which is connected to a fall prevention piece that is approximately parallel to the conductive substrate with respect to the upright piece, and the fitting portion of the female terminal is attached to the conductive substrate. Since the introduction part, the receiving part, and the rotation stopper for the contact pressure pieces are sequentially formed at points symmetrical positions from the center on the inner periphery of the fitting hole for the pair of contact pressure pieces, the C-shape of the male terminal is Due to the springiness of the fitting portion, it has a rich elastic contact with the female terminal and can increase contact pressure, resulting in a stable electrical connection.

Furthermore, since the center of the conductive substrate is hollow as a fitting hole, it can be used to lock onto a pin or screw.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a separated state of a round terminal showing a typical example of the present invention, Fig. 2 is a cross-sectional view taken along the line -2 of a male terminal constituting the same round terminal, and Figs. 3 and 4 are FIGS. 5 and 6 are plan views showing a fitting connection method for the same round terminals as above, respectively, and FIGS. 5 and 6 are plan views (FIG. 5) of male terminals showing other embodiments of the present invention, respectively.
and a plan view (FIG. 6) of the female terminal. FIG. 7 is an explanatory diagram of a conventional example. F... Female terminal, M... Male terminal, 1, 3... Conductive board, 2... Contact pressure piece, 4... Fitting hole, 4a... Introducing part, 4b... Receiving part, 4c... Rotation Stotspa.

Claims (1)

[Scope of utility model registration request] Consisting of a pair of male and female terminals each having a wire connection portion and a mating portion for a mating terminal,
The mating part of the male terminal is a pair of fall prevention pieces that are connected to the upright piece at the inner or outer edge of a C-shaped conductive board, which has a spring property by opening a part of the ring, and is approximately parallel to the conductive board. The fitting part of the female terminal is provided with an introduction part, a receiving part, and a rotating part for the contact pressure piece at a point symmetrical position from the center on the inner periphery of the fitting hole for the pair of contact pressure pieces on the conductive substrate. A round terminal characterized by forming stoppers in sequence.