JPH11242044A - Governor for elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve detection precision of acceleration of a moving body by providing a temperature compensating means for compensating change by the temperature change of the side of magnetic resistant force. SOLUTION: When the speed of a moving body 1 reaches predetermined acceleration, a moving body stop switch 21 is operated by an operation pin 22, the power source of a driving device is cut off, and the moving body 1 is stopped. A temperature compensating means for compensating change caused by the temperature change of the magnitude of magnetic resistant force is provided so that a stop means is operated by the predetermined acceleration independent of the temperature change in a rising and falling passage. In other words, deformation is performed in response to temperature as the temperature compensating means, and a pair of plate springs 26 in which an interval with a pin 25 is changed are provided. The combined spring constant of a coil spring 10 and the plate spring 26 is changed by bringing one of the pair of the plate springs 26 into contact with the pin 25, and at the time when the combined spring constant is changed, the rotation amount of an arm 5 is changed by temperature. The scattering of the detection of the acceleration can be lessened.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator governor for detecting an overspeed of a moving body such as a car or a counterweight and stopping the moving body.

[0002]

2. Description of the Related Art FIG. 19 is a front view showing an example of a conventional elevator governor, and FIG. 20 is a plan view of FIG. In the drawing, reference numeral 1 denotes a moving body such as a car or a counterweight which moves up and down along a hoistway, 2 denotes a conductor provided on the hoistway along the moving direction of the moving body 1, and 3 denotes a fixed body on the moving body The base 4 is a main shaft rotatably provided on the base 3, 5.
Reference numeral denotes an arm which rotates integrally with the main shaft 4 about the main shaft 4.

A pickup 6 is supported at one end of the arm 5. The pickup 6 is fixed to the back yoke 7 so as to face the U-shaped back yoke 7 and both surfaces of the conductor 2. And a magnetic circuit including a magnetic path passing through the conductor 2. Reference numeral 9 denotes a balance weight provided at the other end of the arm 5 so as to be balanced with the pickup 6, and 10 denotes a pair of coil springs provided between both sides of the main shaft 4 of the arm 5 and the base 3. .

[0004] Reference numeral 11 denotes a moving body stop switch that is provided on the base 3 and shuts off the power of a hoisting machine (not shown) that raises and lowers the moving body 1. Reference numeral 12 denotes a balance weight 9 that is provided on the balance weight 9. An operation pin 13 for operating the moving body stop switch 11 by the displacement of the reference numeral 9 is an emergency stop operation rod which is connected to the balance weight 9 and operates an emergency stop device (not shown) by the displacement of the balance weight 9.

Next, the operation will be described. The pickup 6 generates a magnetic field perpendicular to the opposing surface of the conductor 2 located between the pair of magnets 8. When the moving body 1 moves up and down and the magnetic field moves in the conductor 2, an eddy current is generated in the conductor 2 to cancel the change in the magnetic field in the conductor 2, and the eddy current has a magnitude corresponding to the speed of the moving body 1. A force opposing the movement of the moving body 1, that is, a magnetic drag acts on the magnet 8. When the magnetic drag acts on one end of the arm 5, the pickup 6 is displaced vertically with respect to the moving body 1, and
Are rotated about the main shaft 4.

[0006] The amount of the rotational displacement is determined by the main shaft 4 due to the magnetic drag.
It is determined by the balance between the peripheral moment and the moment due to the spring force of the coil spring 10 generated by rotating the arm. Therefore, when the speed of the moving body 1 increases, the amount of rotational displacement of the arm 5 increases, and when the speed of the moving body 1 decreases, the amount of rotational displacement of the arm 5 decreases. And when the moving body 1 is stopped,
The arm 5 is kept horizontal by the weight of the balance weight 9 and the action of the coil spring 10.

When the speed of the moving body 1 reaches a preset first overspeed (usually about 1.3 times the rated speed), the moving body stop switch 11 is operated by the operation pin 12 to move the moving body 1. The power supply of the driving device of the body 1 is cut off, and the moving body 1 is stopped. When the speed of the moving body 1 exceeds the first overspeed and reaches the second overspeed (normally about 1.4 times the stop speed) for some reason, for example, as shown in FIG. Is further rotated, and the safety gear is operated via the safety gear operating rod 13.

Heretofore, as a governor of the type described above, for example, those disclosed in JP-A-5-147852 and JP-A-9-40317 are known.

[0009]

In the conventional elevator governor constructed as described above, when the temperature in the hoistway changes, the density of the magnetic flux generated by the magnetic circuit increases and decreases. As shown in FIG. 22, the magnitude F of the magnetic drag with respect to the speed V of the moving body 1 varies depending on the temperature. That is, when the temperature in the hoistway rises, the above-mentioned size F becomes small. Therefore, as shown in FIG. 23, the moving body 1 when the balance weight 9 reaches the displacement amount P1 at which the moving body stop switch 11 is operated.
Speed VI and displacement P2 at which the safety gear is activated
V of the moving body 1 when the balance weight 9 reaches
2 changes depending on the temperature in the hoistway, and the detection accuracy of the first overspeed and the second overspeed decreases.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide an elevator governor capable of improving the accuracy of detecting an overspeed of a moving body. And

[0011]

According to the present invention, there is provided an elevator governor having a conductor provided on a hoistway along a traveling direction of a moving body, and a magnet provided on the moving body and passing through the conductor. A pickup and a moving body that form a magnetic circuit including a road, receive a magnetic drag of a magnitude corresponding to the speed of the moving body generated by the magnetic circuit when the moving body travels, and are displaced to a position corresponding to the traveling speed of the moving body. Detecting means for detecting the overspeed of the moving body by the displacement of the pickup and activating the stopping means for stopping the moving body; and stopping means at the set overspeed regardless of the temperature change in the hoistway. Is provided with a temperature compensating means for compensating a change in the magnitude of the magnetic drag due to a temperature change.

According to a second aspect of the invention, there is provided an elevator governor as a temperature compensating means for compensating for a change in the magnitude of a magnetic drag with respect to the speed of a moving body due to a temperature change by deforming according to a temperature. Is used.

In the elevator governor according to the third aspect of the present invention, as the temperature compensating means, the deformation of the pickup in accordance with the temperature causes the displacement of the pickup at a timing corresponding to the temperature during the displacement of the pickup with respect to the moving body. In this case, a resistance member that changes a resistance force with respect to is used.

A fourth aspect of the present invention is an elevator governor using a leaf spring as a resistance member.

An elevator governor according to a fifth aspect of the present invention uses a leaf spring made of a combination of a plurality of materials having different coefficients of thermal expansion.

According to a sixth aspect of the present invention, there is provided an elevator governor having a base mounted on a moving body, an intermediate portion rotatably mounted on the base, and a pickup supported at one end. The detecting means includes an arm and a pair of coil springs each provided between one end side and the other end side of the arm and the base and generating a spring force according to the amount of rotation of the arm. Temperature compensation comprising a pair of pins fixed to one of the base and the arm, and a pair of leaf springs fixed to one of the other of the base and the arm and deformed according to temperature to change the distance between the pins. When one of the pair of leaf springs comes into contact with the pin, the combined spring constant of the coil spring and the leaf spring changes, and the amount of rotation of the arm when the combined spring constant changes varies with temperature. To do That.

According to a seventh aspect of the present invention, in the elevator governor, an elastic member whose elastic coefficient changes according to the temperature is used as the temperature compensating means.

An elevator governor according to an eighth aspect of the invention uses a plastic leaf spring as the elastic member.

A speed governor for an elevator according to a ninth aspect of the present invention uses a pickup having a magnet opposed to a conductor and a back yoke for supporting the magnet. The one that deforms and changes the distance between the conductor and the magnet is used.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. Embodiment 1 FIG. FIG. 1 is a front view showing an elevator governor according to Embodiment 1 of the present invention, and FIG. 2 is a plan view of FIG.

In the drawing, reference numeral 1 denotes a moving body such as a car or a counterweight which moves up and down along a hoistway, 2 denotes a conductor provided on the hoistway along the moving direction of the moving body 1, and 3 denotes a moving body 1 A base 4 fixed above is a main shaft rotatably provided on the base 3, and 5 is an arm that rotates integrally with the main shaft 4 about the main shaft 4.

Reference numeral 6 denotes a pickup supported at one end of the arm 5. The pickup 6 is fixed to the back yoke 7 so as to face a U-shaped back yoke 7 and both surfaces of the conductor 2. And a magnetic circuit including a magnetic path passing through the conductor 2. Reference numeral 9 denotes a balance weight provided at the other end of the arm 5 so as to be balanced with the pickup 6, and 10 denotes a pair of coil springs provided between both sides of the main shaft 4 of the arm 5 and the base 3. .

Reference numeral 21 denotes a moving body stop switch which is attached to the base 3 and cuts off a power supply of a hoisting machine or the like (not shown) for moving the moving body 1 up and down. An operation pin for operating the moving body stop switch 21 by movement, an emergency stop operation rod 23 operated by the operation pin 22 to operate an emergency stop device (not shown) as a stop means, a base 24 and a spindle 3, 4, arm 5 and operation pin 2
2 is a detection means.

Reference numeral 25 denotes a pair of pins erected on the base 3, reference numeral 26 denotes a pair of leaf springs as resistance members whose base ends are fixed to both sides of the main shaft 4 of the arm 5, respectively.
These leaf springs 26 are made of a combination of a plurality of materials having different coefficients of thermal expansion such as bimetals and trimetals, and are deformed according to the temperature to change the distance between the pins 25. 27 is a temperature compensating means having a pin 24 and a leaf spring 25.

Next, the operation will be described. The pickup 6 generates a magnetic field perpendicular to the opposing surface of the conductor 2 located between the pair of magnets 8. When the moving body 1 moves up and down and the magnetic field moves in the conductor 2, an eddy current is generated in the conductor 2 to cancel the change in the magnetic field in the conductor 2, and the eddy current has a magnitude corresponding to the speed of the moving body 1. A force opposing the movement of the moving body 1, that is, a magnetic drag acts on the magnet 8. When the magnetic drag acts on one end of the arm 5, the pickup 6 is displaced vertically with respect to the moving body 1, and
Are rotated about the main shaft 4. The amount of the rotational displacement is determined by the moment around the main shaft 4 due to the magnetic drag, and the coil spring 10 and the leaf spring 2 generated when the arm 5 is rotated.
6 and the moment due to the combined spring force. Therefore, when the speed of the moving body 1 increases,
When the rotational displacement of the main shaft 4 and the arm 5 increases and the speed of the moving body 1 decreases, the rotational displacement of the main shaft 4 and the arm 5 decreases. When the moving body 1 is stopped, the arm 5 is kept horizontal by the weight of the pickup 6 and the balance weight 9, and by the action of the coil spring 10 and the leaf spring 26.

When the speed of the moving body 1 reaches a preset first overspeed (usually about 1.3 times the rated speed), the moving body stop switch 21 is operated by the operation pin 22 to move the moving body 1. The power supply of the driving device of the body 1 is cut off, and the moving body 1 is stopped. If the speed of the moving body 1 exceeds the first overspeed and reaches the second overspeed (normally about 1.4 times the stop speed) for some reason, the arm 5 is further rotated, and the emergency stop is performed. The emergency stop device is operated via the operation rod 23.

As described above, in the method using the eddy current,
Due to a change in the magnetic flux density of the magnetic circuit depending on the temperature in the hoistway, as shown in FIG. Therefore, when the spring force acting on the rotational displacement of the arm 5 is always proportional, as shown in FIG.
Drags F1, F2, F3 generated by the same speed
Is smaller as the temperature in the hoistway is higher.

On the other hand, as shown in FIG.
When the plate spring 26 is attached to the arm 5 and the plate spring 26 is attached to the arm 5, for example, as shown in FIG. The composite spring constant of 10 and the leaf spring 26 changes during the displacement. In addition, as shown in FIG. 5, the distance between the tip of the leaf spring 26 and the pin 25 when the arm 5 is horizontal changes continuously depending on the temperature. Varies with temperature.

Here, when the arm 5 is horizontal, the leaf spring 2
Assuming that the arm 6 is separated from the pin 25, the combined spring constant acting at the initial stage of the rotation of the arm 5 is the spring constant k1 of only the coil spring 10, and the rotational displacement at which the leaf spring 26 and the pin 25 abut. Above the amount (which varies with temperature), the combined spring constant k2 of the coil spring 10 and the leaf spring 26
(K1 <k2).

FIG. 6 shows the main shaft 4 in a temperature range in which the leaf spring 26 is separated from the pin 25 when the arm 5 in FIG.
FIG. 7 is a relationship diagram showing the relationship between the magnetic displacement and the amount of rotation displacement of the main shaft 4 in the temperature region of FIG. As shown in FIG. 7, assuming that the amount of rotation of the main shaft 4 when operating the safety device is θ1, the magnetic drag at that time increases as the temperature decreases.

Further, since the leaf springs 26 are deformed toward the pins 25 as the temperature decreases, when the temperature becomes lower than a certain value, when the arm 5 is horizontal, both leaf springs 26 Is in contact with
FIG. 8 is a relationship diagram showing the relationship between the amount of rotational displacement of the main shaft 4 and the combined spring constant in a temperature region where the leaf spring 26 is in contact with the pin 25 when the arm 5 of FIG. 1 is horizontal, and FIG. FIG. 9 is a relationship diagram showing a relationship between a magnetic drag and a rotational displacement amount of a main shaft 4 in a temperature region of FIG. 8. When the leaf spring 26 is pressing the pin 25, one leaf spring 26
, The composite spring constant changes from k3 to k2. When the leaf spring 26 is only in contact with the pin 25, the composite spring constant remains at k2.

In FIG. 7 and FIG. 9, the temperature T in the hoistway
1, T2, T3, Tx, Ty, and Tz, the magnetic drag F1, F2, F3, Fx, which gives the same rotational displacement θ1 of the main shaft 4.
In order that Fy and Fz become the same speed V1 of the moving body 1,
The amount of deformation of the leaf spring 26 depending on the temperature is set. As a result, as shown in FIG. 10, the main shaft 4 rotates by θ1 when the speed of the moving body 1 is V1 regardless of the temperature in the hoistway. If the stop device is operated, the detection accuracy of the speed at which the safety device is operated can be improved. Further, the variation in the detection of the first overspeed can be reduced.

In the above example, the leaf spring 26 such as a bimetal is shown as the resistance member. However, any elastic material having a property of being deformed in response to a change in temperature may be used, for example, a shape memory alloy. Good.

In the above example, the pair of leaf springs 26 are attached to the arm 5, but may be attached to, for example, the main shaft 4 as long as they are displaced integrally with the arm 5.

Embodiment 2 Further, in the above example, the leaf spring 26 was attached to the arm 5 and the pin 25 was attached to the base 3. However, as shown in FIGS. 11 and 12, for example, the leaf spring 26 was attached to the base 3, and the pin 25 was attached to the arm 5. May be attached.

Further, the means for generating the spring force (elastic force) in the above example is not limited to the coil spring 10. In the above example, the second overspeed is set to V1, but the first overspeed may be set to V1 and the moving body stop switch 21 may be operated by a predetermined rotational displacement θ1 of the main shaft 4.

Embodiment 3 Next, FIG. 13 is a front view showing an elevator governor according to Embodiment 3 of the present invention,
FIG. 14 is a plan view of FIG. In the figure, reference numeral 31 denotes a leaf spring (elastic member) as a temperature compensating means whose base end is fixed to the main shaft 4. The leaf spring 31 is made of plastic such as nylon resin, for example. The coefficient (Young's modulus) changes. Specifically, the leaf spring 3
The elastic coefficient of 1 decreases as the temperature in the hoistway increases, and increases as the temperature decreases. Reference numeral 32 denotes a pair of pins fixed to the base 3 and sandwiching both sides of the leaf spring 31.

In such an elevator governor, FIG.
As shown in FIG. 5, when the arm 5 and the main shaft 4 rotate, the coil spring 10 expands and contracts, and the leaf spring 31 deforms, and a resisting force combining these elastic forces acts. When the temperature is high, the spring constant of the leaf spring 31 is small, and when the temperature is low, the spring constant of the leaf spring 31 is large. When the temperature is low and the temperature is low, the resistance can be increased. Therefore, when the set overspeed is reached, the material, thickness, length, and the like of the leaf spring 31 are adjusted so that the main shaft 4 is rotated and displaced by a predetermined amount regardless of the temperature. The detection accuracy of the overspeed can be improved.

The material of the elastic member is not limited to plastic such as nylon, but may be any other material as long as its elastic coefficient changes sufficiently with temperature. If the desired spring force against the magnetic drag and the change rate thereof can be obtained only by the leaf spring 31, the coil spring 10 may be omitted.

Embodiment 4 FIG. Next, FIG. 16 is a front view showing an elevator governor according to Embodiment 4 of the present invention,
FIG. 17 is a plan view of FIG. In the figure, reference numeral 33 denotes a pickup supported at one end of the arm 5;
This pickup 33 has a U-shaped back yoke 34 also serving as a temperature compensating means, and a pair of magnets 8 fixed to the back yoke 34 so as to oppose both surfaces of the conductor 2.

The back yoke 34 is made of, for example, a bimetal, and is deformed by the temperature to change the distance between the conductor 2 and the magnet 8. Specifically, as shown in FIG. 18, the interval is made larger at low temperatures than at medium temperatures,
At high temperatures, the interval is smaller than at medium temperatures.

In such an elevator governor, as the temperature in the hoistway rises, the magnetic flux density of the magnetic circuit decreases. However, as shown in FIG. 8, the magnetic drag increases. Conversely, when the temperature decreases, the magnetic flux density of the magnetic circuit increases, but the conductor 2 and the magnet 8
The magnetic drag is reduced by increasing the distance between. Therefore, by setting the amount of deformation of the back yoke 34 so that the amount of change in the magnetic drag due to the change in the magnetic flux density and the amount of change in the magnetic drag due to the deformation of the back yoke 34 are the same, the magnitude of the magnetic drag is reduced. , Irrespective of temperature fluctuations, it is always determined only by the speed of the moving body 1. Thus, the detection accuracy of the overspeed with respect to the temperature change can be improved.

[0043]

As described above, the elevator governor according to the first aspect of the present invention is configured such that the stopping means operates at the set overspeed regardless of the temperature change in the hoistway. Since the temperature compensating means for compensating for the change of the magnitude of the magnetic drag with respect to the speed due to the temperature change is provided, the detection accuracy of the overspeed of the moving body can be improved.

According to a second aspect of the present invention, there is provided an elevator governor,
Since the temperature compensating means using the deformation according to the temperature is used, the temperature can be compensated by a simple structure, and the accuracy of detecting the overspeed of the moving body can be improved.

According to a third aspect of the present invention, there is provided an elevator governor,
Since the resistance member that changes the resistance to the displacement of the pickup at a timing according to the temperature is used during the displacement of the pickup with respect to the moving body by deforming according to the temperature, the resistance to the displacement of the pickup due to the change in the temperature is used. The force can be more reliably changed, and the detection accuracy of the overspeed of the moving body can be improved.

According to a fourth aspect of the present invention, there is provided a speed governor for an elevator,
Since a leaf spring is used as the resistance member, the structure can be further simplified.

According to a fifth aspect of the present invention, there is provided an elevator governor,
Since the leaf spring made of a combination of a plurality of materials having different thermal expansion coefficients is used, the leaf spring can be easily deformed according to the temperature.

According to a sixth aspect of the present invention, there is provided an elevator governor,
The pin is fixed to one of the base and the arm, and the other of the base and the arm is provided with a resistance member that deforms due to temperature and changes the distance from the pin. Detection accuracy can be improved.

According to a seventh aspect of the present invention, there is provided an elevator governor,
Since the elastic member whose elastic coefficient changes according to the temperature is used as the temperature compensating means, it is possible to improve the overspeed detection accuracy with a simple structure.

The elevator governor according to the invention of claim 8 is:
Since a plastic leaf spring was used as the elastic member,
Overspeed detection accuracy can be improved with a simple structure.

According to a ninth aspect of the present invention, there is provided an elevator governor,
As the back yoke of the pickup, one that deforms due to temperature to change the distance between the conductor and the magnet is used, and the back yoke also serves as a temperature compensating means, so that the overspeed detection accuracy is improved with a simple structure. be able to.

[Brief description of the drawings]

FIG. 1 is a front view showing an elevator governor according to Embodiment 1 of the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a relationship diagram showing the relationship between the magnetic drag and the amount of rotational displacement of the main shaft when the temperature compensating means of FIG. 1 is not provided.

FIG. 4 is a front view showing a state in which the arm of FIG. 1 is rotated.

FIG. 5 is an explanatory diagram showing a deformation state of the leaf spring of FIG. 1 depending on temperature.

FIG. 6 is a relationship diagram showing a relationship between a rotational displacement amount of a main shaft and a combined spring constant in a temperature region where a leaf spring is separated from a pin when the arm in FIG. 1 is horizontal.

7 is a relationship diagram showing the relationship between the magnetic drag and the amount of rotational displacement of the main shaft in the temperature region of FIG. 6;

FIG. 8 is a relationship diagram showing a relationship between a rotational displacement amount of a main shaft and a combined spring constant in a temperature region where a leaf spring is in contact with a pin when the arm of FIG. 1 is horizontal.

9 is a relationship diagram showing the relationship between the magnetic drag and the amount of rotational displacement of the main shaft in the temperature region of FIG. 8;

10 is a relationship diagram showing a relationship between the speed of a moving body and the amount of rotational displacement of a main shaft in the elevator governor of FIG.

FIG. 11 is a front view showing an elevator governor according to Embodiment 2 of the present invention.

FIG. 12 is a plan view of FIG. 11;

FIG. 13 is a front view showing an elevator governor according to Embodiment 3 of the present invention.

FIG. 14 is a plan view of FIG.

FIG. 15 is a front view showing a state in which the arm of FIG. 13 is rotated.

FIG. 16 is a front view showing an elevator governor according to Embodiment 4 of the present invention.

FIG. 17 is a plan view of FIG. 16;

FIG. 18 is an explanatory diagram showing a deformation state of the yoke in FIG. 16 due to temperature.

FIG. 19 is a front view showing an example of a conventional elevator governor.

FIG. 20 is a plan view of FIG. 19;

FIG. 21 is a front view showing a state where the arm of FIG. 19 is rotated.

FIG. 22 is a relationship diagram showing a difference in magnitude of a magnetic drag with respect to a speed of a moving body in a conventional governor due to a temperature.

FIG. 23 is a relationship diagram showing a difference in speed of a moving body depending on temperature when a moving body stop switch and an emergency stop device are operated in a conventional governor.

[Explanation of symbols]

1 moving body, 2 conductors, 3 bases, 5 arms, 6, 3
3 pickup, 8 magnets, 10 coil springs, 24
Detecting means, 25 pins, 26 leaf springs (resistance member), 2
7 temperature compensation means, 31 leaf spring (temperature compensation means), 3
4 Back yoke (temperature compensation means).

Claims (9)

[Claims] 1. A conductor provided on a hoistway along a traveling direction of a moving body, and a magnetic circuit including a magnetic path provided on the moving body and passing through the conductor is formed. A pickup that receives a magnetic drag of a magnitude corresponding to the speed of the moving body generated by a magnetic circuit and is displaced to a position corresponding to a traveling speed of the moving body; provided on the moving body; Detecting means for detecting overspeed of the body and activating stop means for stopping the moving body, and activating the stopping means at the set overspeed regardless of a temperature change in the hoistway. And a temperature compensating means for compensating a change in the magnitude of the magnetic drag due to a temperature change. 2. The temperature compensating means according to claim 1, wherein the temperature compensating means compensates for a change in the magnitude of the magnetic drag with respect to the speed of the moving body due to a temperature change by deforming according to the temperature. Governor for elevator. 3. The temperature compensating means has a resistance member that changes its resistance in response to the temperature at a displacement position corresponding to the temperature during the displacement of the pickup with respect to the moving body. The elevator governor according to claim 2, wherein: 4. The elevator governor according to claim 3, wherein the resistance member is a leaf spring. 5. The elevator governor according to claim 4, wherein the leaf spring is formed of a combination of a plurality of materials having different thermal expansion coefficients. 6. A detecting means includes: a base mounted on a moving body; an arm having an intermediate portion rotatably attached to the base and supporting a pickup at one end; and one end of the arm. A pair of coil springs respectively provided between the base side and the other end side and the base, and generating a spring force according to the amount of rotation of the arm; It has a pair of pins fixed to one of the arms, and a pair of leaf springs fixed to one of the base and the other of the arms and deforming according to temperature to change the distance between the pins. When one of the pair of leaf springs comes into contact with the pin, the combined spring constant of the coil spring and the leaf spring changes, and the arm turns when the combined spring constant changes. Momentum changes with temperature The elevator governor according to claim 4 or 5, wherein: 7. The elevator governor according to claim 1, wherein the temperature compensating means is an elastic member whose elastic coefficient changes according to the temperature. 8. The speed governor for an elevator according to claim 7, wherein the elastic member is a leaf spring made of plastic. 9. The pickup has a magnet facing the conductor and a back yoke supporting the magnet. The back yoke also serves as a temperature compensating means, and is deformed by temperature to deform the conductor and the magnet. 3. The elevator governor according to claim 2, wherein the distance between the elevator and the vehicle is changed.