JPH0736294Y2 - Eddy current indicator - Google Patents

Description

[Detailed description of the device] [Industrial applications]

The present invention relates to an eddy current indicator, and more particularly to a reinforcement and vibration proof device for an eddy current indicator of a speedometer of a vehicle or the like.

2. Description of the Related Art Generally, in an eddy current type indicator, a rotary shaft is rotatably supported by a bottom wall of a U-shaped frame whose both ends are open, and a pointer shaft is attached to a plate installed at both open ends of the U-shaped frame. The upper end side of is pivotally supported. Further, the pointer shaft side is configured to operate in conjunction with the rotation of the rotating shaft side by the eddy current action of the magnet and the guide plate provided on the rotating shaft side and the pointer shaft side. That is, the rotary shaft is adapted to transmit the rotation of the rotation portion to be measured, for example, the transmission of the automobile or the rotation from the vehicle through the flexible cable. To further describe this kind of eddy current type indicator, the lower bearing member fixed to the U-shaped frame is a cylindrical boss made of zinc die casting and the like. It consists of a bearing part that supports the shaft, and at the lower end side of the boss part, a cable coupling part such as a screw thread that can be connected and fixed to the nut part on the flexible cable side is formed, and at the upper end side of the boss part. Is formed with a fixing portion for fixing to the U-shaped frame. This fixing portion is fixed by swaging toward the U-shaped frame, and the lower bearing member is attached and fixed to the U-shaped frame.

[Problems to be solved by the device]

Therefore, in a two-wheeled vehicle (motorcycle, etc.) equipped with such an eddy current indicator, a flexible cable is routed along the vehicle body, and when the vehicle falls down or comes into contact with an external property, that is, externally. When the bearing member side of the indicator instrument connected to the flexible cable is impacted by a pulling force applied by various forces, the frame part that fixes the cylindrical boss portion will be deformed, which will be a factor to disturb the instruction of the indicator instrument, As a result, the indicating instrument may become inoperable. In order to solve the above-mentioned drawbacks
-49965, there has been proposed one in which a reinforcing brim portion, which extends in a plane along the bottom wall of the frame, is integrally projectingly formed on the upper end side of a cylindrical boss portion forming a part of the bearing member. There is. In this case, against the external impact, the reinforcing collar portion that extends in a plane along the bottom wall of the frame can reinforce the frame to which the bearing member is attached, but it is erected from the bottom wall portion of the frame. When both side walls are subjected to lateral vibration from the vehicle, the opposing walls may resonate, and this resonance may cause vibration to be transmitted to the pointer shaft side via the plate etc. and cause the pointer indication to fluctuate. . Therefore, in order to slightly consider such resonance of the side wall, as disclosed in the speedometer of Japanese Utility Model Publication No. 39-34432, a base is provided above the cylindrical bearing portion that supports the rotating shaft. , The base is formed in a substantially U-shape by projecting vertical parts extending along the side walls at both ends of the flanges on both sides, but the base is simply formed along the inside of the side walls of the frame. It is not possible to suppress the outward vibration and deformation of the side wall simply by arranging the parts, and also to effectively improve the strength of the frame and stabilize the operation of the pointer. I couldn't. In addition, since the base and the cylindrical bearing part that supports the rotary shaft are formed separately, it is expected that the cylindrical bearing part will be deformed by the impact applied from the outside of the instrument. .

[The purpose of the device]

The object of the present invention is to disperse the impact applied to the bearing member from the outside of the instrument locally to the bottom wall of the frame by the reinforcing portion without concentrating it locally on the fixing point of the frame and the bearing member, and to the both sides of the frame. The present invention provides an eddy current type indicator instrument capable of suppressing wall resonance.

[Means for Solving the Problems]

According to the present invention, a plate is installed at the open end of a U-shaped frame to form a frame of an indicating instrument, and a rotating shaft is rotatably supported by a bearing member on the bottom wall of the frame. A magnet is provided on the upper end of the shaft, at least the upper end side of the pointer shaft is rotatably supported on the plate, and a guide plate disposed with a small clearance with the magnet is provided on the lower part of the pointer shaft. In an eddy current indicator instrument in which a pointer is fixed and the guide plate is rotated by an eddy current action generated by the rotational movement of the magnet, the bearing member is a cylindrical boss that fixes the bottom wall of the frame. And a bearing portion disposed in the tubular boss portion and rotatably supporting the rotating shaft. The cylindrical boss portion forming a part of the bearing member has a bottom wall of the frame and the upper end portion thereof. A fixed part for tightening and fixing is formed, and
A substantially U-shaped reinforcing portion including a horizontal reinforcing plate that extends in a plane along the outer surface of the bottom wall of the frame and a vertical reinforcing plate that extends from both ends of the horizontal reinforcing plate along the inside of the side wall of the frame. While integrally abutting the horizontal reinforcing plate in a plane along the outer surface of the bottom wall of the frame, the fixing portion of the tubular boss portion is caulked and fixed to the bottom wall of the frame, and The vertical reinforcing plate is inserted into the notch provided in the bottom wall of the frame along the inner surface of the side wall, and the upper end of the vertical reinforcing plate and each side wall of the frame are fixed to each other through the fixing member.

[Action]

The impact applied to the tubular boss from the outside of the instrument is locally concentrated on the fixing point between the frame and the tubular boss, and is dispersed on the bottom wall of the frame by the reinforcing portion to enhance the overall strength. At the same time, by connecting the side wall to the bottom wall, which is the fixed side of the frame through the above-mentioned reinforcing portion, the strength of the entire frame structure is increased, which suppresses the resonance action from the lateral direction that is applied when the pointer is operated. In this way, the instruction of the pointer is kept good.

[Example of device]

1 and 2 show a first embodiment of the present invention, in which a rotary shaft 4 is rotatably mounted on a bottom wall 2 of an instrument frame 1 bent in a U shape via a bearing member 3. It is supported and held, and a magnet 5 is fixed to the upper end of the rotary shaft 4 so that the rotary shaft 4 is rotationally driven by a flexible cable (not shown). A plate 6 constituting a part of the instrument frame 1 is erected and fixed by a caulking portion 7 on the side wall 1a, 1b opening side of the instrument frame 1, and an upper bearing portion 8 is formed at the center of the plate 6. A lower bearing portion 9 is formed at the center of the upper end of the rotary shaft 4, and a pointer shaft 10 is pivotally supported by the bearing portions 8 and 9. A guide plate 11 is provided on the lower end side of the pointer shaft 10 so as to face the magnet 5 fixed to the rotary shaft 4 with a small clearance, and a pointer 12 is press-fitted and fixed on the upper end of the pointer shaft 10. The inner end of the mustache spring 13 is fixed to the approximate center position of 10, and the outer end thereof is fixed to the beard holder 14 provided on the instrument frame 1 side.
The action of eddy current generated by the rotational movement of the magnet 5 balances the elastic force of the guide plate 11 and the elastic force of the beard spring 13 to instruct the rotation. Reference numeral 15 is a dial having a surface fixed to the plate 6 with screws or the like and having display portions such as scales and numbers. The bearing member 3 has a cylindrical boss portion 16 made of zinc die casting or the like which is directly fixed to the instrument frame 1 side.
The cylindrical boss portion 16 is provided with a bearing portion 17 made of a sintered alloy that supports the rotating shaft 4, and is formed at a lower end side of the cylindrical boss portion 16 to be connected to a nut portion of a flexible cable. A cable coupling portion 18 to be fixed is formed, and a fixing portion 19 for crimping and fixing to the instrument frame 1 side is formed at an upper end portion of the tubular boss portion 16. Further, a fixing portion 19 is provided below the fixing portion 19. 1. A horizontal reinforcing plate 20 that extends in a plane along the outer surface of the bottom wall 2 of 1 and vertical reinforcing plates 21 and 22 that extend above the horizontal reinforcing plate 20 along the inside of the side walls 1a and 1b of the instrument frame 1. Each of them is formed integrally with each other so as to form a substantially U-shaped reinforcing portion A. As described above, the bearing member 3 is provided on the bottom wall 2 of the instrument frame 1.
The fixed portion 19 of the tubular boss portion 16 forming a part of is fixed by crimping, and the horizontal reinforcing plate 20 formed on the tubular boss portion 16 at this time.
Of the instrument frame 1 is formed by abutting and holding the same along the outer surface of the bottom wall 2 of the instrument frame 1, and the vertical reinforcing plates 21 and 22 are attached to the instrument frame 1 along the inner surfaces of the side walls 1a and 1b of the instrument frame 1. The vertical reinforcing plate 21, which is inserted through the notches 2a and 2b provided in the bottom wall 2,
The upper end side of 22 and the side walls 1a and 1b of the instrument frame 1 are fixed by screws 23 which are fixing members. In that case, the lower surface of the horizontal reinforcing plate 20 is fixed to the instrument case 24 with screws 25. Therefore, even when the motorcycle falls, external pressure is directly applied to the flexible cable, this external pressure is transmitted to the bearing member 3 connected to the flexible cable, and even if an impact force is applied in a direction orthogonal to the axial direction, the tubular boss portion is applied. The horizontal reinforcing plate 20 formed in 16 allows the force to be dispersed and propagated to the bottom wall 2 portion of the instrument frame 1, whereby the bending of the fixed position due to the impact of the bearing member 3 on the instrument frame 1 and the instrument frame. 1 can be prevented from being deformed, and the side walls 1a and 1b of the instrument frame 1 can be strengthened by the vertical reinforcing plates 21 and 22 against the resonance from the lateral direction caused by the vibration of the vehicle body, etc. The resonance action of the side walls 1a and 1b of the frame 1 is suppressed, and the operation of the pointer 12 can be made more stable than in the conventional case. In addition, the vertical reinforcing portions 21 and 22 are provided on the side walls 1a of the U-shaped frame 1,
Since it is arranged along the inner surface side of 1b, the indicating instrument can be made compact. FIGS. 3 and 4 show a second embodiment of the present invention. The same parts as those of the first embodiment will be described with the same reference numerals.
The bottom wall 2 portion of the instrument frame 1 bent in a U shape is inclined at a constant angle with respect to the height direction of the side walls 1a and 1b,
A rotary shaft 4 is rotatably supported by a bottom wall 2 of the instrument frame 1 via a bearing member 3, a magnet 5 is fixed to the upper end of the rotary shaft 4, and the rotary shaft 4 rotates from a vehicle. The number is formed so as to be rotationally driven via a flexible cable. Further, a plate 6 bridging on the opening side of the side walls 1a, 1b of the instrument frame 1 is erected and fixed to the instrument frame 1, and an upper bearing portion 8 is formed at the center of the plate 6 and is located above the magnet 5. As described above, the lower bearing portion 9 is formed through the arm piece 26 erected on the instrument frame 1 to rotatably support the lower end side of the pointer shaft 10, and the lower end side of the pointer shaft 10 is provided with the magnet 5 and a small clearance gap. The guide plate 11 arranged in a fixed manner is fixed, the pointer (not shown) is press-fitted and fixed to the upper end of the pointer shaft 10, and the inner end of the beard spring 13 is fixed to the center position of the pointer shaft 10, and the outer end thereof is fixed. Is fixed to a mustache holder 14 provided on the instrument frame 1, and an eddy current action generated by the rotational movement of the magnet 5 balances the elastic force of the guide plate 11 and the beard spring 13 to instruct rotation. . The bearing member 3 is composed of a cylindrical boss portion 16 made of zinc die casting or the like which is directly fixed to the instrument frame 1 side, and a sintered alloy which is provided in the cylindrical boss portion 16 and rotatably supports the rotary shaft 4. And the cylindrical boss portion 16 formed by the bearing portion.
A cable coupling portion 18 connected and fixed to the nut portion of the flexible cable is formed on the lower end side of the flexible cable, and the upper end portion of the cylindrical boss portion 16 is not shown, but like the first embodiment described above, the instrument frame. A fixing portion for caulking and fixing with the first side is formed, and further below this fixing portion, the instrument frame 1
A horizontal reinforcing plate 20 extending in a plane along the outer surface of the bottom wall 2 of the instrument, and above the horizontal reinforcing plate 20, the side walls 1a and 1b of the instrument frame 1.
Vertical reinforcing plates 27, 28, 29, 30 extending along the inner side of each of the two are formed integrally with each other at two left and right positions to form a substantially U-shaped reinforcing portion A. As described above, the fixing portion of the tubular boss portion 16 forming a part of the bearing member 3 is caulked and fixed to the bottom wall 2 of the instrument frame 1, and the horizontal reinforcing plate formed on the tubular boss portion 16 at this time. The upper surface of 20 is formed by planarly contacting and holding along the outer surface of the bottom wall 2 of the instrument frame 1, and along the inner surfaces of the side walls 1a and 1b of the instrument frame 1 as in the first embodiment described above. The vertical reinforcing plates 27, 28, 29, 30 with screws 23
Therefore, the side walls 1a and 1b are fixed to the side walls 1a and 1b, so that the same action and effect as those of the first embodiment can be obtained. The method for attaching the U-shaped instrument frame and the reinforcing plate in each embodiment is not limited to screws, but may be any other suitable fixing means such as rivets or welding, and the shape and size of the reinforcing plate. The number of pieces may be set appropriately.

[Effect of device]

According to the present invention, a plate is installed at the open end of a U-shaped frame to form a frame for an indicating instrument, and a rotary shaft is rotatably supported by a bearing member on the bottom wall of the frame. A magnet is provided at the upper end of the pointer shaft, at least the upper end side of the pointer shaft is rotatably supported by the plate, and a guide plate disposed with a small clearance with the magnet is provided at the lower part of the pointer shaft, and the pointer is provided at the upper end of the pointer shaft. In the eddy current indicating instrument in which the guide plate is rotated by the action of the eddy current generated by the rotational movement of the magnet, the bearing member is a cylindrical boss portion that fixes the bottom wall of the frame. And a bearing portion disposed in the tubular boss portion and rotatably supporting the rotating shaft. The upper end portion of the tubular boss portion forming a part of the bearing member is caulked with the bottom wall of the frame. The fixed part to fix is formed and the outside of the bottom wall of the frame A substantially U-shaped reinforcing portion integrally formed with a horizontal reinforcing plate extending in a plane along with a vertical reinforcing plate extending from both ends of the horizontal reinforcing plate along the inside of the side wall of the frame, While horizontally abutting the horizontal reinforcing plate along the outer surface of the bottom wall of the frame, the fixing portion of the tubular boss portion is caulked and fixed to the bottom wall of the frame, and along the inner surface of the side wall of the frame. By inserting the vertical reinforcing plate into a notch provided in the bottom wall of the frame and fixing the upper end of the vertical reinforcing plate and each side wall of the frame via a fixing member, bending of the fixing position due to impact of the bearing member The frame can be prevented from being deformed, and the side wall of the indicating instrument is connected with each reinforcing plate and is integrally provided with the bottom wall that does not resonate, so resonance is suppressed and thereby the indication of the indicating instrument is more stable than before. Do Door can be.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is a sectional view of the first embodiment, FIG. 2 is a perspective view of the same, FIG. 3 is an overall perspective view of a second embodiment, and FIG. It is a side view. 1 ... frame, 1a, 1b ... side wall 2 ... bottom wall, 3 ... bearing member 4 ... rotation shaft, 5 ... magnet 6 ... plate, 8 ... upper bearing 9 ... lower bearing , 10 ...... Pointer shaft 11 ...... Guide plate, 12 ...... Pointer A ...... Reinforcement part, 20 ...... Horizontal reinforcement plate 21,22, 27, 28, 29, 30 ...... Vertical reinforcement plate, 23 ...... Screw ( (Fixing member)

Claims (1)

[Scope of utility model registration request] 1. A plate is installed on an open end of a frame formed in a U-shape to form a frame body of an indicating instrument, and a rotary shaft is rotatably supported on a bottom wall of the frame through a bearing member. A magnet is provided on the upper end of the rotary shaft, at least the upper end side of the pointer shaft is rotatably supported on the plate, and a guide plate disposed with a small clearance between the magnet and the magnet is provided on the lower part of the pointer shaft. In the eddy current indicating instrument in which the pointer is fixed to the guide plate and the guide plate is rotated by the action of the eddy current generated by the rotational movement of the magnet, the bearing member is a tubular shape for fixing the bottom wall of the frame. A boss portion and a bearing portion that is disposed in the tubular boss portion and rotatably supports the rotation shaft, and the bottom wall of the frame is provided at the upper end portion of the tubular boss portion that constitutes a part of the bearing member. A fixed part for caulking and fixing is formed and the bottom wall of the frame Substantially U with a horizontal reinforcing plate extending in a plane along the outer surface, and a vertical reinforcing plate from both ends of the horizontal reinforcing plate extending along the inside of the side wall of the frame
-Shaped reinforcing portion is integrally formed, and the horizontal reinforcing plate is planarly contacted along the outer surface of the bottom wall of the frame, while the fixing portion of the tubular boss portion is caulked and fixed to the bottom wall of the frame. In addition, the vertical reinforcing plate is inserted along the inner surface of the side wall of the frame into the notch provided in the bottom wall of the frame, and the upper end of the vertical reinforcing plate and each side wall of the frame are fixed to each other through the fixing member. Characteristic eddy current indicator.