JP4801001B2 - Contact device - Google Patents

Description

  The present invention relates to a contact device that can be preferably used in, for example, a circuit breaker in a power switchgear.

  As a conventional contact device, a plate-like base, a pair of contacts arranged on both sides of the base, and an elastic holding device that presses one end of the pair of contacts to both surfaces of the base, A contact device in which the elastic holding device presses the other end against both surfaces of the blade by inserting a plate-like blade between the other ends of the pair of contacts narrower than the width of the blade, The elastic holding device includes a spring that comes into contact with the contact and applies a contact pressure, and a stop shaft that pivotally supports the base and the pair of contacts while locking the spring with a collar provided at one end. And a retaining member that is detachably attached to the other end of the retaining shaft to prevent the retaining shaft from coming off (see, for example, Patent Document 1).

JP 2002-190332 A (page 3, FIG. 2)

  In the conventional contact device configured as described above, a dedicated assembly adjustment jig is used to attach the contact pressure spring, or a spring pin is press-fitted into a fixing bracket for connecting the contact piece and the contact. There is a problem that these operations require a lot of precision and time.

  The present invention has been made to solve the above-described problems of the prior art, and an object thereof is to obtain a contact device with improved workability that can be easily assembled without an assembly adjustment jig. It is said.

A contact device according to a first aspect of the present invention includes a pair of contactors arranged so as to sandwich both surfaces of a conductor, and an urging means that is engaged with the pair of contactors and generates a contact pressure with respect to the conductor. And a holding device for holding the pair of contacts, wherein the biasing means includes a contact pressure spring having one end engaged with one of the contacts, and one end connected to the contact member. The other end of the pressure spring is locked and engaged with the one contact through the contact pressure spring, the other end extends in the direction of the other contact, and the contact pressure direction of the contact A contact pressure spring guide member having a long locking hole, a first locking pin inserted into the locking hole and engaged with the one contact, and the other locking hole inserted into the locking hole. be comprised of a second lock pin engaged with the contacts of the pair of contacts are respectively predetermined portions A contact pin that protrudes on both sides in a direction substantially perpendicular to the contact pressure direction of the contact; the holding member includes a recess that holds the contact pin in a direction substantially parallel to the contact pressure direction; A tapered portion is formed so as to be inclined from the top of the recess toward the one end of the contact .
A contact device according to a second aspect of the present invention is a pair of contact members arranged so as to sandwich both sides of a conductor, and a biasing means that is engaged with the pair of contact members and generates contact pressure with respect to the conductor. And a holding device for holding the pair of contacts, wherein the pair of contacts are protruded on both sides in a direction substantially orthogonal to the contact pressure direction of the contacts at predetermined portions, respectively. The contact member is provided with a contact pin, and the holding member is inclined so that its height decreases from the top of the recess toward the one end of the contact from the top of the recess. The taper part for sliding a pin is formed.

In the present invention, the contact holding member is inclined so that the recess for holding the contact pin and the height from the top of the recess toward the one end portion of the contact are lowered. Since the tapered portion for sliding the pin is formed, assembly is easy and workability is improved.

Embodiment 1 FIG.
1 to 18 illustrate a contact device according to Embodiment 1 of the present invention. FIG. 1 is a front view showing the contact device upon completion of assembly, FIG. 2 is a top view thereof, and FIG. It is a perspective view. 4 to 12 are diagrams illustrating details of each component, and FIGS. 13 to 18 are diagrams illustrating an assembly process of the contact device, which will be described in the detailed description of Embodiment 1 below. To do. The same reference numerals denote the same parts throughout the drawings. In the figure, the contact device includes a pair of contacts 1 and 2 arranged so as to sandwich both sides of a conductor (not shown) such as a counterpart bus, one contact 1 and the other contact 2. Energizing means 3 that generates a contact pressure in the vertical direction of FIG. 1 with respect to the conductor, and a contact that protrudes from the other end side (left side of FIG. 1) of the contacts 1 and 2 to both sides of a predetermined portion. The holding member 5 holds the contacts 1 and 2 via the child pin 4, and the terminal 6 is fixed to the holding member 5.

  In this example, the contact 1 is composed of two contact pieces 1A, 1B having the same shape and arranged in parallel with a gap A therebetween. The contact 2 also includes two contact pieces 2A and 2B having the same shape as the contact pieces 1A and 1B of the contact 1 in parallel. As shown in FIG. 4, the contact piece 1 </ b> A (1 </ b> B, 2 </ b> A, 2 </ b> B) is smoothly curved from one end side (right side in FIG. 6) to the opposing surface (lower side in FIG. 4). Part 1a (2a), hole 1b (2b) for inserting the contact pin 4 on the other end side, engaging part 1c (2c) of the biasing means 3 on the outer side of the center (upper side in FIG. 4), A concave portion 1d (2d) is formed at the center of the engaging portion 1c (2c), and a step portion 1e (2e) as an operating angle control portion to be described later is formed on the inner side of the other end portion (left side in FIG. 6). . The concave portion 1d (2d) constitutes a part of the engaging portion 1c (2c).

As shown in FIG. 5, the contact pin 4 is formed with a gap holding portion 4a having a large diameter for forming the gap A at the center, and the contact pieces 1A, 1B or 2A are formed on both sides thereof. A shaft portion 4b having a smaller diameter for supporting 2B than the interval holding portion 4a is formed. The contact pieces 1A and 1B (1A and 2B) are connected by using a contact pin 4 and constitute a contact 1 (2) arranged in parallel through a gap A as shown in FIG.
One end of the biasing means 3 (downward in FIG. 1) is engaged with the recess 1d of the engaging portion 1c of one contact 1 via a first locking pin 33A shown in detail in FIG. The contact pressure spring 31 is disposed so as to penetrate the gap A in the vertical direction in FIG. 1, and a locking portion 32 a at one end (upper in FIG. 1) is connected to the other end of the contact pressure spring 31 (upper in FIG. 1). ) And is engaged with the one contact 1 through the contact pressure spring 31, and the other end (downward in FIG. 1) extends in the direction of the engagement portion 2 c of the other contact 2. The details of engagement with the recess 2d through the second locking pin 33B are constituted by a contact pressure spring guide member 32 shown in FIG.

In this example, the contact pressure spring 31 is a coiled compression spring. In this example, the contact pressure spring guide member 32 is made of a plate material. As shown in FIG. 7, a locking portion 32a of the contact pressure spring 31 protrudes from one end portion and extends long in the contact pressure direction at the center portion on one end portion side. A locking hole 32b for inserting and locking the formed first locking pin 33A is provided, and a locking hole 32c for inserting and locking the same second locking pin 33B is provided in the central portion on the other end side. ing. Note that the two locking holes 32b and 32c may be integrated by connecting the two locking holes 32b and 32c as one long locking hole (not shown).
As shown in FIG. 8, the first and second locking pins 33A and 33B are formed of locking pins 33 having the same shape and having a protruding portion 33a formed on the upper side and a recessed portion 33b formed on the lower side. The length B of the projecting portion 33a is smaller than the inner diameter of the contact pressure spring 31, and the width C of the concave portion 33b is processed to be larger than the width D (FIG. 2) of the contact 1 (2).

  As shown in FIGS. 9 to 12, the holding body 50 constituting the holding member 5 includes two side wall portions 51 and 52 that are opposed to each other via a space F that receives the other end portion of the contact 1 (2). The side wall portions 51 and 52 are connected to each other, and the mounting base portion 53 is electrically connected to the terminal 6. The side wall 51, 52 has a recess 5a for holding the contact pin 4 formed symmetrically in a direction substantially parallel to the contact pressure direction, and one end of the contact 1 from the top 5aa of the recess 5a ( A tapered portion 5b is formed for sliding the contact pin 4 smoothly inclined so as to decrease in height in the right side of the figure during assembly. The holding member 5 is composed of two holding bodies 50 having the same configuration as described above, which are overlapped back to back with the plate-like terminals 6 interposed therebetween as shown in FIG. 12, and inserted into the holes 53a. It is configured to be integrally coupled together with the terminal 6 by a omitted fastener.

Next, an assembly example of the contact device using each member configured as described above will be described. First,
The contact pin 4 shown in FIG. 5 is passed through the holes 1b of the contact pieces 1A and 1B shown in FIG. 4 and connected so that two contact pieces 1A and 1B are arranged side by side to form a set of contact piece units (FIG. 6). The contact piece units made in the same manner as this contact piece unit are arranged symmetrically vertically so that the contact portions 1a face each other. Next, the contact pressure spring 31 is inserted into the contact pressure spring guide member 32 of FIG. This is inserted so as to be sandwiched between the gap A of the contact pieces 1A and 1B and the gap A of the contact pieces 2A and 2B of the two sets of contact piece units arranged one above the other. 8 is inserted so that the protruding portion 33a of the first locking pin 33A of FIG. In addition, the concave portion 33b of the first locking pin 33A is inserted so as to engage with the concave portion 1d of the contact 1. Since the first locking pin 33A slides in the elongated hole 32b of the contact pressure spring guide member 32, the compression operation of the contact pressure spring 31 is not hindered.

  Next, as shown in FIG. 13, the contact pressure spring 31 is placed on the lower side of the contact 1, the head of the contact pressure spring guide member 32 is placed on a hard object, and the other contact 2 is compressed by the contact pressure spring 31. Lightly press downward in the vertical direction indicated by arrow E. When the locking hole 32c of the contact pressure spring guide member 32 is visible, the second locking pin 33B of FIG. 8 is inserted into the hole 32c in the same manner as described above so that the recess 33b engages with the recess 2d of the contactor 2. Enter. Thereby, the contactor assembly shown in FIGS. 14 and 15 in which the contact pressure spring 31 is assembled to the contacts 1 and 2 without using an assembly adjusting jig is obtained. At this time, the contact pressure spring 31 is prevented from coming off by the protrusion 33 a of the locking pin 33. Further, the contact portion 1A, 1B (2A, 2B) constituting the contact 1 (2) is prevented from opening sideways by the side wall portion 33c of the recess 33b engaging with the outer surface of the contact 1. is doing.

  Next, as shown in FIG. 16, after the two contact pins 4 are brought into contact with the upper and lower tapered portions 5 b of the holding member 5, the contact 1 is resisted against the force in the contact pressure direction by the contact pressure spring 31. 2 is pushed in the left direction of the figure as indicated by an arrow G, while the two contact pins 4 move so as to slide on the tapered portion 5b, the distance between the two contact pins 4 increases. The contact 1 is attached to the holding member 5 as shown in FIG. At this time, since the holding member 5 is formed with a space F (FIG. 11) for receiving the other end of the contact 1 (2), the components can be exchanged when the holding member 5 and the contacts 1 and 2 are assembled. Since there is no interference, the contacts 1 and 2 are attached without being damaged. In addition, when each member which comprises a contactor apparatus is assembled in the state shown in FIGS. 1-3, it is comprised so that the engaging part of each member may have moderate play. For example, the contact pieces 1 </ b> A and 1 </ b> B (2 </ b> A and 2 </ b> B) can rotate independently of each other to some extent in a state where the contact pressure by the contact pressure spring 31 is applied.

  Further, the step portion 1e as the operation angle control unit of the contact 1 controls the operation of the contact 1 by the terminal 6 hitting the step portion 1e when the contact 1 and the holding member 5 are assembled. FIG. 17 shows that when the contact 1 rotates clockwise around the contact pin 4, the stepped portion 1 e of the contact 1 abuts against the end surface 6 a of the terminal 6, and the operation range of the contact 1 is indicated by a one-dot chain line. 18 shows an example in which the contact device is limited to the vicinity of the center line H of the terminal 6, which is a substantially center line, and FIG. Show. In addition, although one contact 1 was demonstrated, it is the same also about the other contact 2 arrange | positioned symmetrically, and the other contact 2 rotates to the range beyond the centerline H in the counterclockwise direction. It goes without saying that it is possible. By widening the operation range as shown in FIG. 18, it is possible to allow a wider positional deviation with respect to a conductor such as a counterpart bus bar not shown. In addition, although the case where the operating angle control unit is the stepped portion 1e has been described, the present invention is not necessarily limited thereto, and may be, for example, a tapered shape.

  As described above, according to the first embodiment, the contact pressure spring 31 having one end engaged with the engaging portion 1c including the concave portion 1d of the one contact 1 and the locking portion 32a at one end are provided with this. The other end of the contact pressure spring 31 is locked and engaged with one contact 1 via the contact pressure spring 31, and the other end is engaged with the engagement portion 2 c including the recess 2 d of the other contact 2. Since the combined contact pressure spring guide member 32 is used, it is not necessary to use a dedicated contact piece mounting jig or press-fit a spring pin in the mounting operation, and assembly is easy. Further, the holding member 5 that holds the contact assembly (FIGS. 14 and 15) assembled in this way includes a U-shaped recess 5a that holds the contact pin 4 and the top of the recess 5a. Since the tapered portion 5b that is inclined so as to be lowered in height from 5aa is provided, the contactor assembly can be easily attached only by being pushed into the holding member 5. For this reason, workability | operativity improves. Further, since the structure is simple, the reliability can be improved. Further, since it is easy to widen the range of the operating angle, it is possible to obtain an effect that the positional deviation with respect to the counterpart conductor can be allowed more widely.

  In the first embodiment, the pair of contacts 1 and 2 is configured by two contact pieces 1A, 1B, and 2A and 2B, respectively. However, it is not always necessary to use two contact pieces. It can be composed of two contact pieces. In that case, for example, a through hole that penetrates the center part in the width direction of the pair of contact pieces arranged in the contact pressure direction in the contact pressure direction is provided, and the contact pressure spring guide member 32 is inserted into the through hole. In the same way, the same effect can be expected. In this case, the contact pressure spring guide member 32 may be formed in a round bar shape, for example. As another example, two contact pressure spring guide members 32 may be configured and disposed on both sides of a pair of contact pieces disposed in the contact pressure direction. It goes without saying that various modifications and changes are possible within the scope of the present invention.

The front view which shows the contactor apparatus by Embodiment 1 of this invention. The top view of the contactor apparatus shown by FIG. The perspective view of the contactor apparatus shown by FIG. The front view which shows the contact piece which comprises the contactor shown by FIG. It is a figure which shows the contact pin shown by FIG. 1, (a) is a front view, (b) is a side view. The perspective view which shows the contactor shown by FIG. The front view which shows the contact pressure spring guide member shown by FIG. The front view which shows the latching pin shown by FIG. The front view which shows the holding body which comprises the holding member shown by FIG. The top view which shows the holding body which comprises the holding member shown by FIG. The perspective view which shows the holding body which comprises the holding member shown by FIG. The perspective view which shows the holding member shown by FIG. The front view which shows the state when attaching a latching pin in the assembly | attachment process of the biasing means shown by FIG. FIG. 14 is a front view showing a state in which an urging means is attached through the process of FIG. 13. The top view which shows the state in which the urging | biasing means of FIG. 14 was attached. The front view which shows the state which slides a taper part, when engaging the contactor with which the urging | biasing means of FIG. 15 was attached to the holding member of FIG. Explanatory drawing which shows the 1st mode which controls a movement of a contactor, when a terminal contact | abuts to the level | step-difference part of a contactor. Explanatory drawing which shows the 2nd mode which controls a movement of a contactor, when a terminal contact | abuts to the level | step-difference part of a contactor.

Explanation of symbols

  1, 2 contact, 1a contact part, 1b hole, 1c engagement part, 1d recess, 1e step part (operation angle control part), 1A, 1B, 2A, 2B contact piece, 2c engagement part, 2d recess, 3 Biasing means, 31 contact pressure spring, 32 contact pressure spring guide member, 32a locking portion, 32b locking hole, 32c locking hole, 33 locking pin (33A: first locking pin, 33B: second Locking pin), 33a protrusion, 33b recess, 33c side wall portion, 4 contact pin, 4a interval holding portion, 4b shaft portion, 5 holding member, 5a recess, 5aa top portion, 5b taper portion, 50 holding body, 51 52 side wall portion, 53 mounting base portion, 53a hole, 6 terminals, A gap portion.

Claims (2)

A pair of contacts arranged to face both sides of the conductor, an urging means that is engaged with the pair of contacts and generates a contact pressure against the conductor, and a holder that holds the pair of contacts In the contact device provided with a member, the biasing means includes a contact pressure spring having one end engaged with one of the contact members, and one end locked to the other end of the contact pressure spring. The contact is engaged with the one contact through a contact pressure spring, the other end extends in the direction of the other contact, and has a locking hole formed long in the contact pressure direction of the contact. A pressure spring guide member; a first locking pin inserted through the locking hole and engaged with the one contact; and a second locking pin inserted through the locking hole and engaged with the other contact. be made of a locking pin, said pair of contactors, be substantially perpendicular to the contact pressure direction of the contactor to a predetermined portion, respectively The holding member is provided with a recess for holding the contact pin in a direction substantially parallel to the contact pressure direction, and one end of the contact from the top of the recess. A contactor device , characterized in that a tapered portion that is inclined so as to be reduced in height in a direction is formed .   A pair of contacts arranged to face both sides of the conductor, an urging means that is engaged with the pair of contacts and generates contact pressure on the conductor, and a holder that holds the pair of contacts In the contact device provided with a member, each of the pair of contacts includes a contact pin that protrudes on both sides in a direction substantially orthogonal to a contact pressure direction of the contact at predetermined portions, and the holding member is A recess for holding the contact pin, and a tapered portion that is inclined so as to be lowered in height from the top of the recess toward the one end of the contact, and for sliding the contact pin during assembly. The contact device characterized by being made.

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