JP6581007B2 - Slide type variable resistor - Google Patents

Description

  The present invention relates to a slide type variable resistor, and more particularly to a slide type variable resistor having excellent position detection accuracy.

  Digital cameras, digital video cameras, and the like are configured such that the lens barrel is automatically moved for focusing by autofocus. In order to control the movement of the lens barrel, it is necessary to detect the position of the lens barrel provided with a lens to be focused.

  Recently, a slide type variable resistor has come to be used for detecting the position of the lens barrel. The slide type variable resistor is disposed in a state where an operation portion which is a part of a slider disposed so as to be slidable is inserted into a guide groove provided on the outer periphery of the lens barrel portion. The guide groove is formed such that the longitudinal direction of the guide groove itself is inclined with respect to the rotation direction of the lens barrel, and the slide type variable resistor is configured such that the slide movement direction of the slider is inclined with respect to the longitudinal direction of the guide groove. Are arranged as follows.

  Since the slide type variable resistor is arranged so that the slide movement direction of the slider is oblique with respect to the longitudinal direction of the guide groove, the slider is pressed when the operation unit is pressed obliquely with respect to the slide movement direction. Performs a slide movement. The slide type variable resistor can detect the position of the lens barrel by outputting the result corresponding to the position of the slider.

  As a conventional slide type variable resistor, a slide type variable resistor 900 described in Patent Document 1 below is known. The slide type variable resistor 900 will be described with reference to FIG.

  The slide type variable resistor 900 includes an insulating substrate 911 in which a resistor pattern 911a and a conductor pattern 911b are arranged on one surface, and a slider 912 that is in sliding contact with the resistor pattern 911a and the conductor pattern 911b. And a slider 913 that has an operation portion 913b, holds the slider 912, and is slidable along the longitudinal direction of the insulating substrate 911, and is opposed to the insulating substrate 911 in a separated state and has a long hole 914b. And a case 914 having a pair of opposite side walls 914c provided along the longitudinal direction of the top surface 914a from the top surface 914a toward the insulating substrate 911 side. This is a slide type variable resistor in which the slider 913 slides in a state where the long hole 914b is inserted into the long hole 913b. The slider 913 is provided with an elastic portion 913c that elastically contacts the one side wall 914c and presses the slider 913 against the other side wall 914c. The insulating substrate 911 is supported by a mounting plate 916 integrated with the case 914.

  With such a configuration, it is possible to provide the slide type variable resistor 900 with good position detection accuracy even when operated by receiving an operation force oblique to the slide movement direction.

JP2013-168527A

  In the case of a structure such as the slide type variable resistor 900, the operation unit 913b is provided in the electronic device by rotating the movable member of the electronic device such as a digital camera to which the slide type variable resistor 900 is attached. In order to move smoothly in the guide groove, a certain amount of clearance is required between the operation portion 913b and the guide groove. However, when this clearance becomes larger than necessary, it causes rattling and there is a problem that the accuracy of detecting the rotational position of the movable member cannot be increased. In addition, if the clearance is reduced in order to increase the accuracy of detecting the rotational position, there is a possibility that the slider 913 of the slide type variable resistor 900 may not be driven or a part may be scraped due to the variation in part dimensions. .

  The present invention has been made in view of such a state of the art, and is a slide type that has excellent position detection accuracy by reducing backlash between the guide groove of the electronic device with which the operation unit engages and the operation unit. An object is to provide a variable resistor.

  In order to solve the above-mentioned problems, the slide type variable resistor of the present invention has a case in which a long hole is formed and an operation portion protruding from the long hole, and is slidable along the longitudinal direction of the long hole. A slide-type variable resistor comprising: a slider held in the case; a slider fixed to the slider; and an insulating substrate provided with a resistor pattern in sliding contact with the slider. In addition, a cover member on which an elastic force acting away from the other side surface of the operation unit is attached to one side surface of the operation unit in the sliding direction of the slider, and the cover is resisted against the elastic force. The member is characterized in that it can move in the sliding direction with respect to the operation portion.

  The slide type variable resistor configured as described above can displace the cover member in the sliding direction with respect to the operation unit in a state where the cover member receives an elastic force that moves away from the other side surface of the operation unit. Therefore, it is possible to provide a slide-type variable resistor with excellent position detection accuracy by reducing backlash between the guide groove of the electronic device with which the operation unit is engaged and the operation unit.

  Further, in the above configuration, the cover member is characterized in that an elastic piece for obtaining the elastic force is integrally provided.

  Since the slide-type variable resistor configured in this way is provided with the elastic piece integrally with the cover member, it is not necessary to provide a separate elastic member and the productivity is good. Further, there is no problem that the elastic member falls off and enters the elongated hole.

  In the above configuration, the cover member includes an upper surface portion positioned on an upper surface of the operation portion, and a side wall portion facing one side surface of the operation portion, and the elastic piece is formed on the side wall portion. It is formed so as to extend in a U shape from the lower end portion, and a concave portion having a receiving portion capable of coming into contact with the distal end portion of the elastic piece is provided on the one side surface of the operation portion. Have

  In the slide type variable resistor configured in this way, when the upper surface portion of the cover member is mounted so as to be placed on the operation portion, the elastic piece is formed in a U shape. Since it enters from the curved surface side below the elastic piece, not from the tip end side of the piece, it is possible to prevent the elastic piece from being deformed. Moreover, since the elastic piece is formed in a U shape, the spring span can be lengthened and good elasticity can be obtained. In addition, since the operation portion is provided with a recess in which the elastic piece is disposed, even if the elastic piece is formed in a U shape, it is possible to suppress an increase in the operation portion to which the cover member is attached. it can.

  Further, in the above configuration, a pair of opposed flat surfaces are provided on the outer periphery of the operation unit in a direction orthogonal to the sliding direction, and a convex portion is provided on the flat surface, and the cover member has Has a feature that a pair of notch-shaped guide portions that are arranged so as to be movable in the sliding direction by the convex portions are provided.

  The slide type variable resistor configured in this way smoothly moves the cover member in the sliding direction by a pair of flat surfaces having convex portions provided on the outer periphery of the operation portion and a guide portion provided on the cover member. Can be made.

  In the above configuration, the cover member is made of an elastic metal plate.

  In the slide type variable resistor configured as described above, since the cover member is made of a metal plate, the strength can be ensured even if the plate thickness is thin, and the operation unit to which the cover member is attached becomes large. You can avoid that.

  Further, in the above configuration, an elastic part is provided on one surface of the outer periphery in a direction orthogonal to the sliding direction of the slider, and the elastic force of the elastic part with respect to one side surface of the case It is characterized by being larger than the elastic force of the member.

  In the slide type variable resistor configured as described above, the elastic force of the cover member is set to be smaller than the elastic force of the elastic part of the slider with respect to one side surface of the case, so that the effect of the elastic force by the elastic part of the slider is weakened. There is no.

  In the above configuration, the outer peripheral surface on one side surface in the sliding direction of the cover member and the outer peripheral surface on the other side surface of the operation portion are arcuate.

  The slide-type variable resistor configured in this way can make the operating portion respond to the change in the angle even if the angle of the guide groove into which the operating portion is inserted changes.

  The slide type variable resistor of the present invention can displace the cover member with respect to the operation unit in a state where the cover member receives an elastic force that moves away from the other side surface of the operation unit. Therefore, it is possible to provide a slide-type variable resistor with excellent position detection accuracy by reducing backlash between the guide groove of the electronic device with which the operation unit is engaged and the operation unit.

It is a disassembled perspective view which shows each member which comprises the slide type variable resistor in embodiment of this invention. It is a perspective view which shows the external appearance of a slide type variable resistor. It is the top view and front view of a slide type variable resistor. It is a perspective view which shows the structure of an insulated substrate. It is a perspective view which shows the slider with which the slider was attached. It is a perspective view which shows the state in which the slider was mounted in the insulated substrate. It is a schematic diagram which shows an example of the usage method of a slide type variable resistor. It is a perspective view which shows the structure of a cover member. It is a perspective view which shows the structure of a slider. It is sectional drawing of a slide type variable resistor. It is a perspective view which shows the structure of the slider to which the cover member was attached. It is a disassembled perspective view which shows the structure of the slide type variable resistor which concerns on a prior art example.

[Embodiment]
Hereinafter, embodiments of the slide type variable resistor 100 of the present invention will be described with reference to the drawings. The slide type variable resistor 100 rotates the movable member of an electronic device such as a digital camera to which the slide type variable resistor 100 itself is attached, so that the operation unit 5 is in a guide groove provided in the electronic device. This is a slide type variable resistor configured to be movable. Based on the output result from the slide type variable resistor 100, the position of the operation unit 5, that is, the rotational movement position of the movable member of the electronic device can be detected. The application of the slide type variable resistor 100 of the present invention is not limited to this, and can be used for detecting the position of a movable member that moves linearly, for example. Further, in this specification, unless otherwise specified, the + X side of each drawing is the right side, the -X side is the left side, the + Y side is the rear side, the -Y side is the front side, the + Z side is the upper side, and the -Z side is the lower side. Will be described.

  First, with reference to FIG. 1 thru | or FIG. 6, the whole structure and each structural member of the slide type variable resistor 100 are demonstrated easily. FIG. 1 is an exploded perspective view showing each member constituting the slide type variable resistor 100, and FIG. 2 is a perspective view showing an appearance of the slide type variable resistor 100. 3A is a plan view of the slide-type variable resistor 100, and FIG. 3B is a front view of the slide-type variable resistor 100. FIG. 4 is a perspective view showing the structure of the insulating substrate 11, and FIG. 5 is a perspective view showing a state in which the slider 13 with the slider 12 attached is viewed from below. FIG. 6 is a perspective view showing a state in which the slider 13 is placed on the insulating substrate 11. 4 and 6, the resistor pattern 11a is hatched to clarify the difference from the conductor pattern 11b.

  As shown in FIG. 1, the slide type variable resistor 100 includes an insulating substrate 11, a terminal 15, a slider 12, a slider 13, a case 14, a cover member 7, and a mounting plate 16. Configured.

  As shown in FIGS. 2, 3A and 3B, the case 14 is made of a punched and bent metal plate, and is perpendicular to the rectangular top surface 14a and the top surface 14a. And a pair of opposing side walls 14c provided along the longitudinal direction of the top surface 14a. The top surface 14a is provided with a long hole 14b opened along the longitudinal direction of the top surface 14a.

  The case 14 is provided with an insulating substrate 11 formed of an insulating plate. As shown in FIG. 4, the insulating substrate 11 is provided with a resistor pattern 11a and a conductor pattern 11b arranged on the upper surface thereof. The resistor pattern 11a is formed by printing or applying a resistor such as carbon having a predetermined resistance value on the insulating substrate 11, and the conductor pattern 11b is a coating containing metal particles having good conductivity such as silver. A film is formed on the insulating substrate 11 by printing or coating.

  Further, as shown in FIG. 4, a plurality (three in this embodiment) of terminals 15 connected to the resistor pattern 11 a and the conductor pattern 11 b are attached to the insulating substrate 11. As shown in FIG. 3B, the terminal 15 is made of an electrically conductive metal material that has been drawn and bent, and an electronic device that needs to perform position detection in order to output a position detection result ( (Not shown).

  The mounting plate 16 is made of a punched and bent metal plate and is formed in a substantially rectangular shape. As shown in FIGS. 2 and 3B, the insulating substrate 11 is disposed on the mounting plate 16 so that the insulating substrate 11, the case 14, and the mounting plate 16 are integrated with each other. The sliding variable resistor 100 is formed by folding and locking the locking pieces of the case 14. The slide type variable resistor 100 is attached to an electronic device such as a digital camera by a mounting plate 16.

  The slide-type variable resistor 100 has a slider 13 held in the case 14 so as to be slidable along the longitudinal direction of the long hole 14b. The slider 13 is made of a synthetic resin material, and as shown in FIG. 5, the base portion 13a is formed in a substantially rectangular parallelepiped shape. The slider 12 is held on the lower surface (−Z surface) of the base portion 13a of the slider 13, and on the upper surface (+ Z surface) of the base portion 13a, as shown in FIG. An operation portion 5 that receives an external operation is formed so as to protrude in a substantially cylindrical shape. A cover member 7 is attached to the operation unit 5 so as to cover the operation unit 5. As shown in FIG. 6, the slider 13 is disposed on the side of the insulating substrate 11 where the resistor pattern 11a and the conductor pattern 11b are formed.

  As shown in FIG. 5, the slider 12 is made of a thin metal plate that has been punched and bent, and has a base 12a attached to the slider 13 and a cantilever extending from the base 12a. And a pair of divided sliding contact pieces 12b. A portion curved in an arc shape at the tip of the sliding contact piece 12b is a contact portion that is in sliding contact with the resistor pattern 11a or the conductor pattern 11b provided on the insulating substrate 11.

  Next, an example of how to use the slide type variable resistor 100 will be described with reference to FIG. FIG. 7 is a schematic diagram showing an example of how to use the slide type variable resistor 100. Fig.7 (a) is a schematic diagram which shows the initial state, FIG.7 (b) is a schematic diagram which shows the state during the operation. 7A and 7B, GD is a guide groove provided in a lens barrel (not shown) of a digital camera, a digital video camera, or the like.

  As shown in FIGS. 7A and 7B, the slide type variable resistor 100 is provided with an operation portion 5 which is a part of the slider 13 slidably arranged on the outer periphery of the lens barrel portion. It arrange | positions in the state inserted in the guide groove GD. In general, the guide groove provided in the lens barrel is formed such that the longitudinal direction of the guide groove is inclined with respect to the rotation direction of the lens barrel. In the slide type variable resistor 100, the sliding movement direction of the slider 13 is arranged to be inclined with respect to the longitudinal direction of the guide groove GD.

  In the slide type variable resistor 100, the slider 13 is arranged so that the sliding direction of the slider 13 is inclined with respect to the longitudinal direction of the guide groove GD. The slider 13 is slid and moved by the GD in an oblique direction with respect to the slide movement direction.

  The slide type variable resistor 100 can detect the position of the lens barrel by outputting an output voltage corresponding to the position of the slider 13. The slider 13 projects the operating portion 5 outwardly from the long hole 14b of the case 14, and abuts one sliding piece 12b of the slider 12 shown in FIG. 5 against the resistor pattern 11a shown in FIG. In this state, the case 14 and the insulating substrate 11 are slidably disposed in the longitudinal direction of the case 14.

  When the lens barrel portion rotates from the initial state shown in FIG. 7A and the guide groove GD moves in the arrow Y direction as shown in FIG. 7B, the operation portion 5 moves the contact position with the guide groove GD. While changing, the slide movement is performed in the direction of the arrow X, and the output voltage is changed with the slide movement.

  The slider 13 operates in conjunction with the movement of a component such as a guide groove GD that operates using a motor or the like as a power source. For this reason, the slider 13 is formed in an outer shape so that the contact area with the case 14 does not increase so that the slider 13 can be smoothly operated even with weak power, thereby reducing the operating force. By forming the slider 13 in this way, the slider 13 can operate smoothly and position detection can be realized.

  Next, the structure of the operation unit 5, the cover member 7, and the slider 13 of the slide type variable resistor 100 will be described in detail with reference to FIGS. FIG. 8 is a perspective view showing the structure of the cover member 7, and FIG. 9 is a perspective view showing the structure of the slider 13. FIG. 10 is a cross-sectional view of the slide type variable resistor 100 as viewed from the line AA in FIG. FIG. 11 is a perspective view showing the structure of the slider 13 in a state where the cover member 7 is attached to the operation unit 5.

  In order to operate the slide type variable resistor 100, the operation portion 5 is slid along the longitudinal direction of the long hole 14b, that is, along the slide direction D1 shown in FIGS. As a result, as shown in FIGS. 6 and 10, the slider 12 fixed to the slider 13 slides on the resistor pattern 11a and the conductor pattern 11b. As the slider 13 slides, the resistance value changes as the contact position between the resistor pattern 11a and the conductor pattern 11b and the slider 12 (sliding piece 12b) changes. Among the three terminals 15 shown in FIG. 4, a voltage is applied from the electronic device between two terminals respectively conducting to both ends of the resistor pattern 11a, and a voltage divided from the other terminal is output. be able to.

  The cover member 7 is made of a metal plate having elasticity, and as shown in FIG. 8, as shown in FIG. 8, the upper surface portion 7 b disposed on the upper surface of the operation portion 5 of the slider 13 and one side surface (−X side surface) of the operation portion 5. And a pair of plate-like side wall portions 7g provided in a direction perpendicular to one side surface (the surface on the −X side) of the operation portion 5. . The cover member 7 is integrally provided with an elastic piece 7a. The elastic piece 7a is formed so as to extend in a U-shape from the lower end portion of the side wall portion 7c toward the center of the cover member 7, and the distal end portion 7f of the elastic piece 7a is between the upper surface portion 7b. It is separated by a predetermined distance. Further, the outer peripheral surface 7e on one side surface in the sliding direction D1 of the cover member 7 has an arc shape in plan view from the + Z side.

  As shown in FIG. 9, a concave portion 5 a is provided on one side surface (the surface on the −X side) of the operation unit 5. The recess 5a has a predetermined cutting width and is formed by cutting from one side surface (the surface on the −X side) of the operation unit 5 to the center of the operation unit 5 having a substantially cylindrical shape. The surface on the + X side of the concave portion 5a forming the concave portion 5a is a receiving portion 5b having a flat surface and can come into contact with the elastic piece 7a.

  As shown in FIG. 9, a pair of opposed flat surfaces 5c are provided on the outer periphery of the operation portion 5 in the direction orthogonal to the slide direction D1, and one side surface (−X A convex portion 5d is provided at the end of the side. The upper part of the convex part 5d is inclined. Then, as shown in FIG. 8, a pair of guide portions 7d are provided at positions corresponding to the convex portions 5d of the cover member 7. The guide portion 7d has a notch shape in which one side surface (−X side) of the pair of side wall portions 7g is notched, and is configured to dispose a convex portion 5d provided in the operation portion 5. Yes. Further, the outer peripheral surface 5e on the other side surface (+ X side surface) of the operation unit 5 has an arc shape in plan view from the + Z side.

  As shown in FIG. 10, a cover member on which an elastic force that moves away from the other side surface (+ X side) of the operation unit 5 acts on one side surface (−X side) of the operation unit 5 in the sliding direction D <b> 1 of the slider 13. 7 is attached. The cover member 7 is attached so that the upper surface portion 7 b is placed on the operation portion 5 after the elastic piece 7 a is inserted into the concave portion 5 a of the operation portion 5 from above the operation portion 5. The side wall portions 7g on the + Y side and the −Y side of the cover member 7 shown in FIG. 8 are inclined provided on the upper portion of the convex portion 5d of the operation portion 5 when the cover member 7 is attached to the operation portion 5 from above. And is attached to the operation unit 5. As a result, as shown in FIG. 11, the convex portion 5d provided on the operation portion 5 is disposed on the guide portion 7d of the cover member 7, and the cover member 7 can be moved in the slide direction D1 by the convex portion 5d of the operation portion 5. Will be guided to.

  After the cover member 7 is attached to the operation part 5, the elastic piece 7 a comes into contact with the receiving part 5 b of the operation part 5. As a result, an elastic force that moves away from the other side surface (+ X side) of the operation unit 5 acts on the cover member 7, and the cover member 7 moves against the operation unit 5 in the sliding direction D <b> 1 against the elastic force. It becomes possible to move to.

  The operation unit 5 having the cover member 7 attached thereto is inserted into the guide groove GD shown in FIG. 7 provided in an electronic apparatus such as a digital camera to which the slide type variable resistor 100 is attached. It moves in the guide groove GD. Therefore, the outer peripheral surface 7e on the one side surface in the sliding direction D1 of the cover member 7 and the outer peripheral surface 5e on the other side surface of the operation unit 5 abut against the guide groove GD. Since the outer peripheral surface 7e of the cover member 7 and the outer peripheral surface 5e of the operation portion 5 are arcuate as described above, even if the angle of the guide groove GD changes, the operation portion 5 and the cover member 7 can be moved. It is possible to cope with the change in the angle.

  Further, as shown in FIG. 9, only one surface (the surface on the −Y side in the outer periphery) of the base portion 13a in the direction orthogonal to the sliding direction D1 of the slider 13 is in a doubly supported beam shape. The formed elastic part 13b is provided. The elastic portion 13b includes an elastic arm portion 13d having elasticity and a protruding portion 13c, and both ends of the elastic arm portion 13d are connected to the base portion 13a. The protruding portion 13c is formed at the central portion of the elastic arm portion 13d so as to protrude in a direction away from the base portion 13a. The protrusion 13c is disposed so as to elastically contact the side wall 14c of the case 14 shown in FIG. The elastic portion 13b may be provided on the surface on the + Y side instead of the surface on the −Y side of the outer periphery of the base portion 13a.

  By providing the slider 13 with the elastic portion 13b, the slider 13 can be brought into elastic contact with one of the side walls 14c of the case 14 and can be brought into pressure contact with the other of the side walls 14c. As a result, an unnecessary gap between the slider 13 and the case 14 can be eliminated. As a result, rattling when the slider 13 is slid can be prevented, variation in the contact position between the slider 12 and the resistor pattern 11a can be reduced, and accurate position detection can be achieved.

  The elastic force of the elastic portion 13 b of the slider 13 on one side surface of the case 14 is set to be larger than the elastic force of the cover member 7 attached to the operation portion 5.

  Hereinafter, the effect by having set it as this embodiment is demonstrated.

  The slide type variable resistor 100 can displace the cover member 7 in the sliding direction D <b> 1 with respect to the operation unit 5 in a state where the cover member 7 receives an elastic force that moves away from the other side surface of the operation unit 5. Therefore, rattling between the guide groove GD of the electronic device with which the operation unit 5 engages and the operation unit 5 can be reduced, and the slide type variable resistor 100 having excellent position detection accuracy can be provided.

  Moreover, since the elastic piece 7a is provided integrally with the cover member 7, it is not necessary to provide a separate elastic member and the productivity is good. Further, there is no problem that the elastic member falls off and enters the elongated hole 14b of the case 14.

  Further, when the upper surface portion 7b of the cover member 7 is mounted so as to be placed on the operation portion 5, the elastic piece 7a is formed in a U-shape, so that the distal end portion of the elastic piece 7a is formed in the concave portion 5a of the operation portion 5. Since it enters from the curved surface side under the elastic piece 7a, not the 7f side, it is possible to prevent the elastic piece 7a from being deformed. In addition, since the elastic piece 7a is formed in a U shape, the spring span can be lengthened and good elasticity can be obtained. Moreover, since the operation part 5 is provided with the recessed part 5a in which the elastic piece 7a is arrange | positioned, even if the elastic piece 7a is formed in U shape, the operation part 5 to which the cover member 7 was attached becomes large. This can be suppressed.

  Further, the cover member 7 can be smoothly moved in the sliding direction D1 by the pair of flat surfaces 5c having the convex portions 5d provided on the outer periphery of the operation portion 5 and the guide portions 7d provided on the cover member 7. .

  Further, since the cover member 7 is made of a metal plate, the strength can be ensured even if the plate thickness is thin, and the operation portion 5 to which the cover member 7 is attached can be prevented from becoming large.

  Further, since the elastic force of the cover member 7 is set to be smaller than the elastic force of the elastic part 13b of the slider 13 with respect to one side surface of the case 14, the effect of the elastic force by the elastic part 13b of the slider 13 is not weakened.

  Moreover, since the outer peripheral surface 7e of the cover member 7 and the outer peripheral surface 5e of the operation part 5 which contact | abut to the guide groove GD of an electronic device are circular arc shape, the angle of the guide groove GD in which the operation part 5 is inserted changes. In addition, the operation unit 5 can be made to respond to the change in the angle.

  As described above, the slide type variable resistor according to the present invention displaces the cover member in the sliding direction with respect to the operation unit in a state where the cover member receives an elastic force that moves away from the other side surface of the operation unit. Can do. Therefore, it is possible to provide a slide-type variable resistor with excellent position detection accuracy by reducing backlash between the member engaged with the operation unit and the operation unit.

  The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention.

5 Operation portion 5a Recessed portion 5b Receiving portion 5c Flat surface 5d Protruding portion 5e Outer peripheral surface 7 Cover member 7a Elastic piece 7b Upper surface portion 7c Side wall portion 7d Guide portion 7e Outer peripheral surface 7f Tip portion 7g Side wall portion 11 Insulating substrate 11a Resistor pattern 11b Body pattern 12 Slider 12a Base part 12b Sliding contact piece 13 Slider 13a Base part 13b Elastic part 13c Protruding part 13d Elastic arm part 14 Case 14a Top surface 14b Long hole 14c Side wall 15 Terminal 16 Mounting plate 100 Slide type variable resistor D1 Slide direction GD guide groove

Claims (7)

A case having a long hole, an operating portion protruding from the long hole, a slider held in the case so as to be slidable along the longitudinal direction of the long hole, and fixed to the slider A slide-type variable resistor comprising a slider and an insulating substrate provided with a resistor pattern that is in sliding contact with the slider,
A cover member on which an elastic force acting away from the other side surface of the operation unit is attached to one side surface of the operation unit in the sliding direction of the slider. A slide-type variable resistor that is movable in the sliding direction with respect to the operation unit.   The slide type variable resistor according to claim 1, wherein the cover member is integrally provided with an elastic piece for obtaining the elastic force.   The cover member has an upper surface portion positioned on the upper surface of the operation portion, and a side wall portion facing one side surface of the operation portion, and the elastic piece is U-shaped from a lower end portion of the side wall portion. 3. The recess according to claim 2, wherein the one side surface of the operation portion is provided with a recess having a receiving portion capable of coming into contact with a tip portion of the elastic piece. The slide type variable resistor as described.   A pair of opposed flat surfaces are provided on the outer periphery of the operation portion in a direction orthogonal to the sliding direction, and a convex portion is provided on the flat surface, and the convex portion is disposed on the cover member. The slide-type variable resistor according to claim 2 or 3, wherein a pair of notched guide portions are provided that are guided by the convex portions so as to be movable in the sliding direction. .   The slide type variable resistor according to any one of claims 2 to 4, wherein the cover member is made of an elastic metal plate. An elastic portion is provided on one surface of the outer periphery in a direction orthogonal to the sliding direction of the slider,
The slide type variable resistor according to claim 1, wherein an elastic force of the elastic portion with respect to one side surface of the case is larger than an elastic force of the cover member.   The outer peripheral surface on one side surface in the sliding direction of the cover member and the outer peripheral surface on the other side surface of the operation portion are arcuate. Slide type variable resistor.

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