JPH075411Y2 - Pulsar device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a pulsar device in which a plurality of pulsars used for the purpose of detecting the number of revolutions of an engine are integrally mounted on the same base.

[Prior Art] An example of a conventional example of this type is shown in FIG. A plurality of pulsar coils b are mounted on the base a in a state of being housed in separate cases c, respectively, and lead wires d extending from the pulsars are wired on the base a at appropriate positions. Is fixed by a clamp e. f is a rotor concentric with the base a, and g is a permanent magnet provided on the inner circumference thereof.

[Problems to be Solved by the Invention] In the case of the above structure, the lead wire d is clamped onto the base a.
Since it is necessary to fix at, the clamping process spends a relatively large amount of time. Further, when the lead wire d and the pulsar coil b vibrate, a force is applied to the connecting portion between them, which may cause deterioration of the lead wire d.

Therefore, an object of the present invention is to prevent the deterioration of the cord due to the vibration of the engine and to simplify the lead wire wiring process in a pulsar device including a plurality of pulsars.

[Means for Solving the Problems] In order to solve the above problems, a pulsar device according to the present invention comprises a plurality of pulsar coils housed in a case provided on a base. The pulsar accommodating portion for accommodating the pulsars individually and the passage connecting the pulsar accommodating portions are integrally formed, and the insulating resin is potted in the case in which each pulsar coil and its lead wire are accommodated. It is characterized by

[Operation of device] When the pulsar coil is housed in the case on the base,
Since the lead wire is wired inside the case, the wiring work becomes easy. Also, since the pulsar coil and the lead wire are fixed by the potting insulating resin inside the case,
The work of clamping the lead wire is not necessary, and even if the device vibrates, the lead wire and the pulsar coil vibrate integrally, so no force is applied to the connection between the two.

[Example] Fig. 1 and Fig. 2 show an example of a pulsar device configured for an automobile. FIG. 1 is a partially cutaway plan view of the pulsar device, and FIG. 2 is a diagram showing a side view of the inside member with some cutouts with the outside member omitted from the direction of the arrow in FIG. 1, for example. Is. Reference numeral 1 is a metal base on which a plurality of (three in this embodiment) pulsar coils 2 are arranged. The pulsar coil 2 is wound around the bobbin 2a, and has a protrusion 3 penetrating the bobbin 2a.
Protrudes to the outer edge of the base 1 and comes close to the permanent magnet 5 fixed to the inner circumference of the rotor 4 arranged concentrically around the base 1. Although the protrusion 3 is not apparent in the figure, since the base 1 and the rotor 4 are connected by the shaft 1a, the permanent magnet 5,
A magnetic path penetrating the pulsar coil 2 is formed between the base 1 and the protrusion 3.

Each pulsar coil 2 is supported in a pulsar housing 7 inside a resin case 6, and each pulsar housing 7 is connected by a passage 8 arranged along the outer periphery of the base 1. The case 6 is formed by integrally forming the pulsar housing 7 and the passage 8 and is mounted on the base 1. Further, the case 6 may be formed integrally with the base 1. Of the three pulsar accommodating portions 7, a grommet 9 is provided in the pulsar accommodating portion 7 at one end, and the three lead wires 10 communicating from this to the outside enter the case 6 at one end side,
One of the lead wires 10 passes through the terminal 2b of the bobbin 2a, and the other two wires pass through the pulsar housing portion 7 as they are and enter the passage 8 and are connected to the other pulsar coils 2 respectively. is doing. The outer part of the case 6 of the lead wire 10 passes through the bush 11 of the base 1, is bundled in the tube 12 outside the base 1, and is connected to the coupler 13. The base of the tube 12 is fixed to the base 1 by a band 14. In the case 6, the pulsar coil 2 and the lead wire 10 are housed and potted with an insulating resin 15 made of epoxy resin or the like.

Next, the operation of this embodiment will be described. First, when the pulsar coil 2 is attached to the base 1, the pulsar coil 2 is put into the pulsar housing portion 7 of the case 6 previously attached to the base 1. At this time, the lead wire 10 extending from the pulsar coil 2 is wired in the passage 8. When potting is performed in the case 6 in this state, the pulsar coil 2
The lead wire 10 is integrated with the case 6. Therefore, even if the base 1 vibrates together with the engine, the pulsar coil 2 and the lead wire 10 are integrated and do not vibrate differently. Therefore, no force is applied to the connecting portion between the pulsar coil 2 and the lead wire 10, There is no risk of deterioration of parts.

Further, when the lead wire 10 is wired, it is simply inserted into the passage 8, so that the positioning becomes easy. Besides,
Workability is improved because the conventional clamping work is not required.

[Effects of the Invention] In the pulsar device of the present invention, since the case for accommodating the pulsar and its lead wire is provided on the base, and the pulsar and the lead wire are accommodated, the pulsar is potted into the case.
The work of clamping the lead wire can be omitted to improve the efficiency of the wiring work, and even if the entire pulsar device vibrates with the engine during use, no force is applied to the coil-lead wire connection, and this part is not degraded. Less likely to occur.

[Brief description of drawings]

1 and 2 show an embodiment, FIG. 1 is a partially cutaway plan view, and FIG. 2 is a transverse sectional view thereof. FIG. 3 is a schematic plan view of a conventional example. (Description of symbols) 1 ... Base, 2 ... Pulsar, 6 ... Case, 7 ... Pulsar accommodating portion, 8 ... Passage, 10 ... Lead wire, 15 ... Insulating resin.

Claims (1)

[Scope of utility model registration request] 1. A pulsar coil comprising a plurality of pulsar coils accommodated in a case provided on a base, wherein the pulsar accommodating part for accommodating each pulsar individually and the pulsar accommodating part are connected to each other. The pulsar device is characterized in that an insulating resin is potted in a state in which each pulsar coil and its lead wire are accommodated in the case while being integrally formed with the passage.