JPH0213923Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a linear displacement type device equipped with a slider position detection mechanism configured to be applied to the control section of the pen mechanism in devices such as self-balancing recorders. This relates to the structure of a sliding resistor.

As is well known, there are two types of sliding resistors: rotary sliding type and linear sliding type. The object of this invention is the latter linear sliding type resistor. This linear sliding type resistor consists of a resistance wire that has the required resistance value wound around a straight insulated core wire, or a resistor that is constructed by coating a conductive synthetic resin on the insulator to obtain the required resistance value. A device configured to have the following is used.

Conventionally, for example, in a recorder using a linear displacement sliding resistor, a slider including a contact that slides on the surface of the resistor is attached to a resistor element support member that supports the resistor element described above. The guide mechanism for guiding the member and the slider member are each constructed separately and combined. Therefore, there are many problems in design, such as displacement of the guide mechanism when the contact moves in the length direction of the resistor, and maintenance of equal intervals between the guide mechanisms in the length direction of the resistor. That is, according to the above configuration,
Adjustment during assembly is difficult, and a large number of precision parts are required to prevent rotation of the slider member moving on a guide mechanism such as a round bar, and a large number of man-hours are required for assembly adjustment. Ta. In addition, in the sliding resistor having the above configuration, a detector is provided for detecting the relative positional relationship of the slider member with respect to the resistance element support member, that is, the upper and lower limits to be set for sliding of the slider member, and both of them. When combined together, a mechanism for guiding and moving the detector in parallel with the support member, and a mechanism between the detector and an actuating element that applies an actuation signal to actuate the detector. This requires a mechanism to accurately adjust the relative positions of the two, which necessitates a complex configuration.

The object of this invention is to provide a guiding mechanism that cooperates between a support member supporting a resistive element and a slider member provided with conductive brush contacts, in order to eliminate the above-mentioned problems and drawbacks. An object of the present invention is to provide a linear displacement type sliding resistor in which a detector is directly slidably attached to a support member, and a detector actuator is additionally attached to a slider member.

In order to achieve the above-mentioned object, this invention specifically includes a flat plate-shaped resistance element extending in a linear direction, a support surface for attaching the resistance element, and a support surface perpendicular to the support surface. a resistance element support member having extending portions facing each other in parallel; and a resistance element support member provided on the extension portion of the resistance element support member and extending parallel to the resistance element sliding surface of the resistance element. A block that includes a pair of first engagement guide parts facing each other and an engagement part that is engaged and guided by the first engagement guide parts, and that is guided along the first engagement guide parts. a slider member including a brush contactor that is attached to a surface of the block body facing the resistance element and comes into sliding contact with a sliding surface of the resistance element; and the extension of the resistance element support member. a pair of second engagement guide parts formed in the resistor element, extending parallel to the resistance element sliding surface of the resistance element and facing in opposite directions; and engaged with the second engagement guide part. a channel member having a guided engaging portion and positioned at an appropriate position in the longitudinal direction of the support member; at least one detector attached to the channel member; and at least one detector attached to the slider member. , a linear displacement sliding resistor equipped with a slider position detection mechanism consisting of a detection mechanism in combination with an actuator brought to the detection part of the detector according to the movement of the slider member. Configure.

Hereinafter, a linear displacement type sliding resistor equipped with a slider member position detection mechanism according to the present invention will be described in detail based on specific embodiments shown in the drawings.

In this invention, the resistance element 1 has a flat plate shape extending in a linear direction. As described above, this plate-shaped resistance element 1 is made by winding a resistance wire having a desired resistance value around a straight insulated core wire, or by winding a resistance wire having a desired resistance value on an insulator, or by coating a conductive synthetic resin on an insulator. It may be any of the following. The plate-shaped resistance element 1 is attached to an insulating member 2, and its top surface constitutes a flat sliding surface 3. A lead wire (not shown) is connected to the plate-shaped resistance element 1 at its longitudinal end. This plate-shaped resistance element 1 has the insulating member 2 on one support surface 5 of the resistance element support member 4.
It is fixedly supported through the layers. In the example shown in FIG. 1, the support member 4 has a pair of extending portions 6, 6 that are integrally formed with respect to the support surface 5 and are parallel to each other and face each other. A pair of opposing first engagement guide portions 7 extending parallel to the resistance element 1 on opposing inner surfaces of the extending portions 6, 6.
is provided. The first engagement guide section 7
It may be a pair of concave grooves 7a, 7a as shown in the figure, or a pair of protrusions 7b, 7 as shown in FIG.
It may be b. The resistance element support member 4 is
For example, it is formed of a light metal material such as aluminum, or a suitably rigid synthetic resin material.

A slider member 8 is attached to the resistance element support member 4.
is constituted by an insulating block body 10 having a conductive brush contactor 9 that comes into sliding contact with the sliding surface 2 of the plate-shaped resistance element 1 disposed on the support member 4. The slider member 8 has a block body 10
The resistance element support member 4 is attached to both sides 11, 11 of
A pair of protrusions 12a, 12a or a pair of concave grooves 12b, 12b are provided, which are slidably fitted into the first engagement guide portion 7 provided in the first engagement guide portion 7 provided in the first engagement guide portion 7. The slider member 8 is arranged such that when the slider member 8 is inserted into the support member 4, the brush contactor 9 moves in parallel to and contacts the sliding surface 2 of the resistance element 1 with equal pressure. It is configured.

On the other hand, a second engagement guide portion 13 extending parallel to the resistance element 1 is provided on opposing outer surfaces of the extending portions 6, 6 of the support member. This second engagement guide portion 13 has a pair of grooves 13 as shown in FIG.
a, 13a, or a pair of protrusions 13b, 13b as shown in FIG.

The detection mechanism 14 includes at least one detector 15 that is slidably attached to the second engagement guide part 13 and an actuator that is fixed to the slider member 8 and brought to the detector position. 16. The detector 15 is installed on a channel member 17 having protrusions 17a, 17a or grooves 17b, 17b that are slidably fitted into the second engagement guide portion 13. The detector 15 may be of a photoelectric type, magnetic type, capacitance type, optical type, etc.
As No. 6, a structure corresponding to any of the above-mentioned detectors is selected. For example, in a self-balancing recorder, the slider member 8 is automatically measured by a so-called zero position method, which is a balanced measurement method using a servo mechanism (not shown) combined to operate the slider member. Since the actuator 16 is stopped at a position corresponding to the input signal, the actuator 16 moves to a predetermined position according to the input signal. When the actuator 16 approaches the manually movable detector 15 and reaches its detection position, the detector 15 is actuated in a preset relationship to detect the upper limit, the lower limit, or the upper and lower limits.

According to the linear displacement sliding resistor of this invention having the above configuration, there is provided a support member that supports the resistance element in a straight plane, and a conductive brush that is in sliding contact with the resistance element under constant pressure. A combination configuration with a slider member provided with a contactor, and on the support member side,
A detector that can be slidably guided in the length direction and positioned at an appropriate location, and a detector that is directly attached to the slider member and that is moved to the detection operating point of the detector by movement of the slider member. By rationally combining simple components, such as the combination configuration with the actuator, the device can be made compact, and the desired resistance value output and sliding range of the slider member can be achieved. The settings can be controlled very easily according to the requirements. In other words, this invention eliminates the need for a separate guide mechanism, such as a round bar, for guiding the slider member and a complicated mechanical part for preventing rotation of the slider member, unlike the conventional ones. I don't. In addition, a guide mechanism provided cooperatively between the slider member having the contact and the resistance element support member allows the slider member to be held under uniform pressure along the length direction of the resistance element member. It can be moved and provides highly accurate resistance value output. moreover,
This invention directly applies to the resistance element support member.
Providing a manually slidable detector as appropriate, setting the upper limit, lower limit, upper and lower limit values, etc., and providing an actuator directly fixed to the slider member,
As the slider member is moved by a servo mechanism, it is configured to perform an operation according to the desired purpose via the actuator, and the mutual configuration does not require many components. The present invention provides a linear displacement resistor equipped with an effective slider position detection mechanism that does not require complicated adjustment.

[Brief explanation of the drawing]

The drawings show a specific embodiment of a linear sliding resistor equipped with a slider position detection mechanism according to the present invention, and FIG. 1 is a cross-sectional view of the resistor device, and FIG. The figure is a cross-sectional view of a linear sliding resistor according to another embodiment. 1... Plate resistance element, 2... Insulating member, 3...
Resistance element sliding surface, 4... Resistance element support member, 5...
...Supporting surface, 6...Extending portion, 7...First engagement guide portion, 7a...Concave groove, 7b...Convex strip, 8, 8'...
... Slider member, 9 ... Conductive brush contactor, 1
0,10'...Block body, 11...Both sides, 1
2a...Convex strip, 12b...Concave groove, 13...Second engagement guide portion, 13a...Concave groove, 13b...Convex strip,
14...detection mechanism, 15...detector, 16...actuator, 17...channel member, 17a...projection, 17b...concave groove.

Claims (1)

[Claims for Utility Model Registration] A flat plate-like resistance element 1 extending in a linear direction, a support surface 5 for attaching the resistance element 1, and extensions facing each other in parallel and perpendicular to the support surface 5. a resistance element support member 4 having projecting portions 6, 6; an extension portion 6 of the resistance element support member 4;
6, a pair of first engagement guide portions 7 facing each other and extending parallel to the resistance element sliding surface 3 of the resistance element 1; A block body 10 that includes an engagement portion 12 that is engaged and guided and guided along the first engagement guide portion 7, and the block body 1
a slider member 8 including a brush contactor 9 that is attached to the resistance element facing surface side in 0 and comes into sliding contact with the sliding surface 3 of the resistance element 1; and the extension of the resistance element support member 4. a pair of second engagement guide portions 13 formed in the portions 6, 6, extending parallel to the resistance element sliding surface 3 of the resistance element 1 and facing in opposite directions;
a channel member 17 that includes engaging portions 17a and 17b that are engaged and guided by the second engagement guide portion 13 and is positioned at an appropriate position in the longitudinal direction of the support member 4; At least one detector 15 attached thereto, and an actuator 16 attached to the slider member 8 and brought to the detection location of the detector 15 according to the movement of the slider member 8. A linear displacement sliding resistor equipped with a slider position detection mechanism characterized by comprising a combination detection mechanism 14.