JP3011199U - Detector - Google Patents

Abstract

(57) [Abstract] [Object] The present invention relates to a detector, and in particular, an object thereof is to integrally form a case by resin molding using an outer surface of a component such as a stator core constituting the detector as a guide. [Structure] The detector according to the present invention comprises a bobbin (4) having an outer surface (4
b) or on the rotor outer surface (6a) of the rotor core (16), by having a resin case (1) integrally molded with the outer surface (4b) or the rotor outer surface (6a) as a guide, cost reduction, It is a structure that can achieve electrical insulation and explosion-proof structure.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a detector, and more particularly to a new improvement for resin-molding a case integrally by resin molding with an outer surface of a component such as a bobbin constituting the detector being considered.

[0002]

[Prior art]

 As typical detectors of this type that have been conventionally used, there are the linear detector shown in FIG. 3 and the rotary detector shown in FIG. That is, in the case of the linear detector (linear sensor) of FIG. 3, the bobbin 4 having the winding portion 3 is fitted to the inner wall surface 1a of the ring-shaped metal case 1 via the ring-shaped shield plate 2. A detector 6 having a core 5 is provided in a guide hole 4a formed in the center of the bobbin 4 so as to be able to move in and out along the linear direction A. Further, a lid 7 made of metal is provided at both ends of the bobbin 4, and the lead wire 8 extends through the lid 7 and the case 1 and is drawn out to the outside.

Further, in the case of the rotary type detector of FIG. 4, a bobbin 4 having a winding portion 3 and a rotary transformer stator core having a rotary transformer stator winding 10 are provided on an inner wall surface 1 a of a ring-shaped metal case 1. 11 are fitted and provided in the bobbin 4 and the guide holes 4a, 11a formed at the centers of the rotary transformer stator core 11 and having a rotor winding 15 and a rotor core 16 and a rotary transformer rotor winding 17 respectively. A cylindrical rotor 19 having a rotating trans-rotor core 18 having is provided rotatably. Further, the lead wire 8 is drawn out from the case 1 to the outside.

[0004]

[Problems to be solved by the device]

 The conventional detector has the following problems because it is configured as described above. That is, in the conventional structure described above, a metal case is indispensable in order to conform to the standards such as MIL standard, NDS, JIS, etc., but the processing cost and the total assembly cost are extremely expensive. However, when it was used for the purpose that does not require such a standard, it was impossible to adopt it from the viewpoint of cost.

The present invention has been made to solve the above problems, and in particular, by integrally resin-molding a case by resin molding with the outer surface of a component such as a bobbin constituting a detector as a guide. The aim is to provide a detector that is inexpensive and has a high level of detection performance.

[0006]

[Means for Solving the Problems]

 The detector according to the present invention is a detector in which a detection shaft having a core is provided in a guide hole formed in the center of a bobbin having a winding portion so as to be able to move in and out, and the linear movement position is detected. On the outer surface of the bobbin, there is provided a resin case integrally molded with the outer surface as a guide.

More specifically, a ring-shaped shield plate is provided between the outer surface of the bobbin and the resin case.

A detector in which a rotor core having a rotor winding is provided in a guide hole formed in the center of a ring-shaped bobbin having a winding portion to detect a rotational position, and a bobbin outer surface of the bobbin is provided. A stator resin case integrally molded with the outer surface of the bobbin as a guide, and a rotor resin case integrally molded with the rotor outer surface of the rotor core as a guide. .

More specifically, the inner peripheral surface of the stator resin case and the outer peripheral surface of the rotor resin case have a face-face formed by machining.

More specifically, the stator resin case has a rotary transformer stator core, and the rotor resin case has a rotary transformer rotor core.

[0011]

[Action]

 In the detector according to the present invention, first, the bobbin having the winding part is used as a guide, and the case is formed on the outer surface of the bobbin by resin molding such as dipping molding. The detector can be manufactured at low cost. Also in the case of a rotor core having a rotor winding, the rotor outer surface of the rotor core is used as a guide, and the rotor resin case is molded on the rotor outer surface by resin molding. Become one.

[0012]

【Example】

 Hereinafter, preferred embodiments of the detector according to the present invention will be described in detail with reference to the drawings. In addition, the same or equivalent portions as those of the conventional example will be described using the same reference numerals. In the case of the linear detector shown in FIG. 1, the reference numeral 1 is a ring-shaped case made of resin by dipping molding or the like, and a ring-shaped shield plate 2 is provided on the inner wall side 1a of the case 1. A bobbin 4 having a winding portion 3 is provided, and a detection shaft 6 having a core 5 is provided in a guide hole 4a formed at the center of the bobbin 4 so as to be able to move in and out along a linear direction A. .

The case 1 is formed by assembling the bobbin 4 using the outer surface 4b of the bobbin 4 and the shield plate 2 as guides and then dipping the bobbin 4 into a molding die (not shown). The case 4 and the case 1 are integrally formed, and the lead wire 8 is drawn out from the case 1 to the outside.

Further, in the case of the rotary detector of FIG. 2, the reference numeral 1 is a ring-shaped resin case for a stator, which is resin-molded by dipping molding or the like. A bobbin 4 having a wire portion 3 and a rotary transformer stator core 11 having a rotary transformer stator winding 10 are provided. A cylinder provided with a rotor core 16 having a rotor winding 15 and a rotary transformer rotor core 18 having a rotary transformer rotor winding 17 in guide holes 4a, 11a formed at the centers of the bobbins 4 and the rotary transformer stator core 11. A cylindrical rotor 20 composed of a rotor-shaped resin case 19 is rotatably provided.

The stator resin case 1 is formed by positioning the bobbin 4 and the rotary transformer stator core 11 in a molding die (not shown) and integrally resin-molding them by known dipping molding. The case 19 is also formed by positioning the rotor core 16 and the rotary transformer rotor core 18 in a molding die (not shown) and integrally resin-molding them by dipping molding, as in the case of the above-described resin case 1 for a stator.

The inner peripheral surface 1A of each stator resin case 1 and the outer peripheral surface 19A of the rotor resin case 19 described above are continuously machined from one end to the other end as secondary processing after molding. -It is formed so that it may become a surface.

[0017]

[Effect of device]

 Since the detector according to the present invention is configured as described above, the following effects can be obtained. That is, in both the linear type and the rotary type, the case that constitutes the stator and the rotor is formed by resin molding with the bobbin and the rotor core as guides. It is possible to realize weight reduction by resin molding, selection of molding material according to purpose and application, flexible molding of complicated shape, facilitation of electrical insulation structure, facilitation of explosion-proof structure, and easy mass production.

[Brief description of drawings]

FIG. 1 is a sectional view showing a detector according to the present invention.

FIG. 2 is a cross-sectional view showing another embodiment.

FIG. 3 is a sectional view showing a conventional detector.

FIG. 4 is a cross-sectional view showing another conventional example.

[Explanation of symbols]

 1 Resin Case 1A Inner Surface 2 Shield Plate 3 Winding Part 4 Bobbin 4a Guide Hole 4b Bobbin Outer Surface 5 Core 6 Detecting Axis 11 Rotating Transformer Stator Core 15 Rotor Winding 16 Rotor Core 16a Rotor Outer Surface 18 Rotating Transformer Rotor Core 19 Rotor Resin Case 19A Outer peripheral surface

Claims (5)

[Scope of utility model registration request] 1. A detection shaft (6) having a core (5) is provided in a guide hole (4a) formed in the center of a bobbin (4) having a winding portion (3) so that the detection shaft (6) can be moved in and out, and a linear movement is performed. In the detector for detecting the position, on the outer surface (4b) of the bobbin (4), the outer surface
A detector characterized in that it has a resin case (1) integrally resin-molded with (4b) as a guide. 2. The detector according to claim 1, wherein a ring-shaped shield plate (2) is provided between the outer surface (4b) of the bobbin (4) and the resin case (1). . 3. A rotor core (16) having a rotor winding (15) is provided in a guide hole (4a) formed in the center of a ring-shaped bobbin (4) having a winding portion (3), and a rotation position is provided. In the detector adapted to detect, the bobbin outer surface (4b) of the bobbin (4)
Has a stator resin case (1) integrally resin-molded with the bobbin outer surface (4b) as a guide, and the rotor core (1
A detector characterized in that the rotor outer surface (16a) of (6) has a rotor resin case (19) integrally molded with the rotor outer surface (16a) as a guide. 4. An inner peripheral surface of the stator resin case (1)
4. The detector according to claim 3, wherein the outer peripheral surface (19A) of the (1A) and the rotor resin case (19) has a surface-surface formed by machining. 5. The stator resin case (1) has a rotary transformer stator core (11), and the rotor resin case (19) has a rotary transformer rotor core (18). The detector according to 3 or 4.