JPH04506277A - Electromagnetic switching device auxiliary switch - 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] Electromagnetic switching device auxiliary switch The present invention is an auxiliary switch for an electromagnetic switching device, which has a plurality of fixed contacts. It has a contact bridge carrier in the casing with a partial construction, and this contact bridge carrier is The position of the ridge carrier is secured via a compression spring, and the spring force is applied in the energized/de-energized state of the drive unit. Regarding types that can be moved against the ground and have multiple bridge contacts. do.

Forcibly guided auxiliary contacts which can be configured as closing and/or opening contacts Auxiliary switches used for mounting on electromagnetic safety devices are already known. Ru. A compression spring that holds the contact bridge carrier against the traction force of the magnet is usually The contact bridges are arranged along the axis of motion of the ridge carrier and connected to this carrier. within a predetermined space suitably formed by the casing part surrounding the wedge carrier. It is accommodated.

The object of the present invention is to improve the conventionally known auxiliary switch of this type. , to ensure that the energy balance in the electromagnetic switching device is maintained, and thus By installing additional auxiliary switches, the response characteristics of the main device can be improved. The point is to suppress sexual fluctuations to a slight level.

According to the measures of the present invention proposed to solve this problem, the operation of the contact bridge carrier is A two-arm toggle lever joint with two push springs placed eccentrically with respect to the dynamic axis. At one end of the contact bridge, blind holes are formed on opposite sides of the carrier. or similar parts, and at the other end into the casing part. The negative return adjustment spring force characteristic against the tensile force of the drive part is It has a sexual curve.

Two pressure springs, especially coil springs, are arranged in a mutually inclined state as in the present invention. If they are arranged to interact, the reaction force will increase as the spring travel increases. In other words, the spring axis gradually decreases as it approaches the perpendicular to the stroke axis, and the result is As a result, the problems of the present invention are solved. Furthermore, the push spring is arranged like this. This allows the construction length of the auxiliary switch to be shortened without limiting the spring travel. Both become possible.

In a further embodiment of the invention, the principle of a negative characteristic curve for the adjustment force is In the holding state, that is, in the excited state of the magnet, the spring axis of the pressing spring is controlled by the movement of the contact bridge carrier. It is applied in such a way that it extends approximately perpendicular to the axis.

According to another proposal according to the invention for simplifying the assembly of the auxiliary switch, the contact block Each notch formed in the casing part on the side facing the ridge carrier It has an insertion opening that opens toward the casing surface, and when the casing is assembled, this It is provided that a compression spring can be introduced into the insertion opening. In other words, don't paraphrase If so, the compression springs must be inserted together with the casing part only after the contact bridge carrier has been assembled. entered. These casing parts in the auxiliary switch are e.g. The stop protrusion provided along the dividing seam of the casing wall in the shing section and this and a locking groove correspondingly assigned to the second casing part. I can do that. An advantageous embodiment of the casing part in the auxiliary switch according to the invention According to Each contact switch in the casing part as one chamber directed inside the casing It is located in the center of the room.

By the way, two C-shaped wire springs that reduce the reaction force as the spring stroke increases, Alternatively, two springs may be used that interact with each other in inclined positions. The principle of the negative spring characteristic curve caused by It already belongs to the state of the art in the field of returning the No. 10523, Patent Application No. 33 of the Federal Republic of Germany, dated April 29, 1951 Specification No. 40904, Specification of Patent Application No. 2350914 of the Federal Republic of Germany , German Patent Application No. 2848287 and European Patent Application No. 2848287 Only the specification of Japanese Patent Application Publication No. 0091082 will be exemplified.

The invention will now be described in detail with reference to embodiments illustrated in the accompanying drawings: FIG. 1 is an isometric drawing of an auxiliary switch according to the present invention.

Figure 2 is a horizontal cross-sectional view of the auxiliary switch in the cutoff position; FIG. 3 is a horizontal cross-sectional view of the auxiliary switch in the connected position.

FIG. 1 shows two housing parts A1B, a contact bridge carrier 10 and a pressure spring 2. A four-contact auxiliary switch consisting of The point bridge carrier 10 has bridges as closing and/or opening contacts in a known manner. The upper surface 103 in one end region is provided with a protruding edge contact 101. A switching rod 102 is provided. A support is provided at the center of the upper surface of the contact bridge carrier 10. A support block 104 is integrally molded, and this support block 104 includes a blind holes 105 to 107 that open toward the front and are separated from each other by a partition wall 106; is formed. The bulkhead 106 has a pressure spring 2.3 mounted at the base of the blind hole 105.107. forming a slope, which is advantageously slightly inclined with respect to the longitudinal axis 1 of the contact bridge carrier 10; Since the spring axes 201 and 301 are arranged as shown in FIG. The center point of the spring on the contact bridge carrier 10 not only in the closed state but also in the disconnected state Based on a plane 108 extending perpendicularly to the axis of motion 1 of the contact bridge carrier 10 through occupies a recessed position.

Switching chambers 35 and 45 are provided on the outer surface of each casing half A1B. Between each two switching chambers 35.45 there is a space for accommodating a pressure spring 2.3. An intermediate chamber 46 to 36 is formed with a cutout 43.33. On the other hand, case A fixed contact 4 is provided on the side facing the inside of the singe. These fixed contacts 4 Approximately in the center of the casing located above the The mounting space for supporting the parts is in the notches 43 to 3 of each casing part (A, B). It is formed as 3. Each cutout 43.33 is inserted into the contact bridge carrier 10 respectively. Its rear wall, which forms a space expanding towards the front and supports the pressure spring 2.3, is connected to the contact point. does not extend parallel to the axis of movement 1 of the bridge carrier 10, but approximately 1 to the axis of movement 1 It is arranged to be inclined at a relatively small angle α of 0 to 20 degrees. contact The mounting surface of the push spring 2.3 provided in the blind hole 105, 107 of the bridge carrier 10 is also It is formed to extend parallel to this rear wall. Therefore, according to the invention As is clear from Fig. 3, the drive section of this safety device is in an excited state, that is, in a pulled state. In the pulled state, the spring force of the push spring 2.3 resists the drive part of the safety device and becomes neutral (zero). (b) The object acting in the direction never reaches an invalid state (passes through the dead center), but rather, The spring axis 201.301 is always at 90 degrees relative to the movement axis 1 of the contact bridge carrier 10. It is ensured that the angle β is kept below degrees.

On the other hand, in the de-energized state shown in FIG. 2 of the drive part of the safety device, the push button The spring force of the spring 2.3 is greatest in the "blocking direction" of the contact bridge carrier 10. this place The spring force exerted by each compression spring 2.3 when It means the spring force component that acts in one direction of the line, and the reverse insertion force due to the push spring 2.3 is the safety device. It is at its lowest position when the drive unit is pulled in.

20'? international search report international search report S^　29413

Claims (4)

[Claims] 1. Auxiliary switch for electromagnetic switching devices, multi-component with multiple fixed contacts It has one contact bridge carrier in the casing made of The carrier is secured in position via a compression spring and is subject to the spring force in the energized/de-energized state of the drive device. Types that are movable against the ground and have multiple bridge contacts The two contacts are arranged eccentrically with respect to the motion axis (10) of the contact bridge carrier (10). The push springs (2, 3) are connected at one end by a two-arm toggle lever joint system. Here, the blind holes (105, 10) formed on opposite sides of the contact bridge carrier (10) are 7) or similar parts, and at the other end the casing part (A , B) are respectively supported in the notches (33, 43) drilled in the auxiliary, characterized in that it has a negative return adjustment spring force characteristic curve for switch. 2. The auxiliary switch according to claim 1, wherein the bearing surfaces of the push springs (2, 3) are in a holding state. In the state (magnet excited state), the spring axes (201, 301) of the push springs (2, 3) are in contact. extending approximately perpendicular to the axis of motion (1) of the point bridge carrier (10) An auxiliary switch characterized in that it is arranged on the contact bridge carrier (10) as shown in FIG. blood. 3. Auxiliary switch according to claim 1 or 2, wherein the contact bridge carrier (10) each notch (33, 43) formed in the casing part (A, B) on the side assigned to each has an insertion opening (34, 44) that opens toward the casing surface. , when the casing (A, B, 10) is assembled, it is pressed into the insertion opening (34, 44). Auxiliary switch, characterized in that springs (2, 3) can be introduced. 4. The auxiliary switch according to any one of claims 1 to 3, wherein the contact bridge The casing parts (A, B) surrounding the carrier (10) are the casing of the casing part (B). The locking protrusions (41, 42) provided along the housing wall dividing joint and the second casing It is characterized by being able to be connected to each other via the locking groove formed in the locking part (A). Auxiliary switch.