JP4135476B2 - Method and apparatus for adjusting fixed contact position - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method and an apparatus for adjusting the position of a fixed contact in a component having a fixed contact and a movable contact.
[0002]
[Prior art]
FIG. 1 shows a schematic configuration diagram of a component having a fixed contact and a movable contact and a conventional position adjusting device for the fixed contact. The component 1 includes a fixed contact 3, a fixed contact terminal 5 that holds the fixed contact 3, a movable contact 7, a movable contact terminal 9 that holds the movable contact 7, an insulating component 11 that couples the fixed contact terminal 5 and the movable contact terminal 9, and a pin 13 and the rotor 15. The rotor 15 rotates around the pin 13, whereby the movable contact terminal 9 is pushed down, and the movable contact 7 contacts the fixed contact 3. Such a component 1 having the fixed contact 3 and the movable contact 7 plastically deforms the fixed contact terminal 5 so that any component starts contact with the fixed contact 3 when the movable contact 7 moves by a certain amount. It is necessary to adjust the position of the fixed contact 3.
[0003]
A conventional method for adjusting the fixed contact 3 will be described with reference to FIGS. 1 and 2. FIG. 2 is a diagram showing the positions of the fixed contact 3 and the movable contact 7 during position adjustment. In the conventional adjustment method, first, the position 3 (a) of the fixed contact 3 and the position 7 (a) of the movable contact 7 before adjustment are measured by a measuring means (not shown). Then, when the movable contact 7 is moved to the position 7 (b) by the contact position calculation means 23 and the movable contact 7 is moved to the position 7 (b), the fixed contact 3 and the movable contact 7 start to contact each other. Position, that is, a desired adjustment position 3 (b) is calculated.
[0004]
Next, the fixed contact terminal 5 is deformed until the fixed contact 3 reaches the position 3 (b) by driving the adjuster 25 as the fixed contact terminal deforming means by the driving means 27 and pushing down the fixed contact terminal 5. Make the first adjustment. However, in a normal case, the fixed contact 3 has elasticity, so that a certain amount is restored (springback) by raising the adjuster 25, and the fixed contact 3 is positioned at a position 3 (c) different from the desired adjustment position 3 (b). Located in.
[0005]
Next, the restored fixed contact position 3 (c) is measured by a measuring means (not shown), and the adjuster movement amount calculating means 29 is used to measure the fixed contact 3 from 3 (b) to 3 (c) from the measured value. The amount of movement of the adjuster 25 and the amount of restoration of the fixed contact terminal 5 are calculated. Then, the adjustment amount calculation means 31 calculates the second required movement amount from the product of the restoration amount and a constant coefficient K ′ for each product, and the adjustment amount by the necessary movement amount below the position 3 (b). The position of the fixed contact is adjusted by lowering 25 and deforming the fixed contact terminal 5 to the necessary deformation amount until the fixed contact 3 reaches the position 3 (d).
[0006]
There is no prior art document to be described regarding the present invention. This is because the prior art known to the applicant is not related to the literature known invention.
[0007]
[Problems to be solved by the invention]
However, in the conventional adjustment method and adjustment device, it has been difficult to ensure a highly accurate contact position of the contact due to the following problems. That is, in deriving the desired adjustment position 3 (b), the positions of the fixed contact 3 and the movable contact 7 before adjustment are measured and calculated from the measured values. It has been difficult to calculate the position 3 (b) at which contact is actually started due to variations in the setting to the adjusting device 21 or deformation variations in the movable contact 7.
[0008]
Further, in deriving the second adjustment movement amount, the fixed contact position after restoration is measured, and the movement amount of the adjuster from the measurement value until the fixed contact 3 reaches 3 (b) to 3 (c) is calculated. Because of the calculation, the amount of movement of the adjuster accompanying actual restoration could not be obtained with high accuracy due to reasons such as variations in measurement, and it was difficult to derive the adjustment movement amount with high accuracy. .
[0009]
In view of the above circumstances, an object of the present invention is to provide a fixed contact adjusting method and apparatus capable of adjusting the contact start position of a contact with high accuracy.
[0010]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, in the present invention, the fixed contact terminal is deformed while supporting the movable contact at a predetermined position in advance, and the fixed contact when the fixed contact and the movable contact actually reach a desired contact state. We decided to measure the position of the contact. By setting the position relating to the fixed contact thus determined as a desired adjustment position, it is possible to obtain an actual contact position corresponding to the measurement variation. Here, the position of the fixed contact reaching the desired connection state is determined in two ways depending on whether or not the movable contact is in contact with the fixed contact before adjustment when the movable contact is supported at a predetermined position.
[0011]
That is, when the movable contact is supported at a predetermined position so as to come into contact with the fixed contact before adjustment, the position related to the fixed contact that has reached the desired contact state is determined by deforming the fixed contact. And the position where separation starts. On the other hand, when the movable contact is supported at a predetermined position, when it is not in contact with the fixed contact before adjustment, the position related to the fixed contact that has reached the desired contact state is obtained by deforming the fixed contact. The position was determined as the position for starting contact with the movable contact.
[0012]
In addition, as a means for deforming the fixed contact terminal, an adjuster that presses and deforms one end of the fixed contact terminal by moving in a certain direction is used, and the amount of movement from the initial position of the adjuster is determined as a position related to the fixed contact. We decided to measure. As described above, the position of the movable contact and the position related to the fixed contact when the desired contact state is reached, and the position related to the fixed contact after being restored by elastic deformation and moved by the required deformation amount, are respectively used as the movement amount of the adjuster. By measuring, position adjustment according to the above-mentioned measurement variation or the like becomes possible.
[0013]
The coefficient K ′ described above is preferably changed according to the restoration amount at the time of the first adjustment. Conventionally, the coefficient K ′ is constant for each product because the influence of the measurement variation is larger. The factor was used. In the present invention, as the position adjustment according to the variation in measurement is possible as described above, this coefficient is determined according to the restoration amount at the first adjustment. That is, the second adjustment of the present invention is performed by moving the fixed contact below the desired adjustment position by a distance determined by the product of the coefficient K and the restoration amount determined corresponding to the restoration amount at the first adjustment. It was. Thereby, highly accurate position adjustment becomes possible.
[0014]
Further, in the present invention, at the time of restoration accompanying the second adjustment, the positions of the fixed contact reaching the desired adjustment position by restoration and the fixed contact after restoration are measured and compared with each other. This makes it possible to evaluate the position of the fixed contact after adjustment, which contributes to more accurate position adjustment.
[0015]
Furthermore, in the present invention, the presence / absence of contact between the fixed contact and the movable contact is determined based on the presence / absence of electrical continuity, and the restoration completion of the fixed contact terminal is determined based on the presence / absence of electrical continuity. The decision was made based on the presence or absence. As a result, it is possible to more accurately determine the contact state in the sense of electrical continuity between the actual movable contact and the fixed contact, and it is possible to easily detect the restoration of the fixed contact terminal. The adjustment position can be measured.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a fixed contact position adjusting method and apparatus according to the present invention will be described with reference to FIGS. 3, 4 and 5. FIG. 3 is a schematic configuration diagram of a component before adjustment having a fixed contact and a movable contact, and a fixed contact position adjusting device according to the present invention. FIG. 4 is a follow chart of the position adjustment method according to the present invention. FIG. 5 is a diagram showing the transition of the fixed contact 3, the movable contact 7 and the adjuster during the adjustment by the first position adjusting method according to the present invention.
[0017]
As in FIG. 1, the component 1 is composed of a fixed contact 3, a fixed contact terminal 5 that holds the fixed contact 3, a movable contact 7, a movable contact terminal 9 that holds the movable contact 7, a fixed contact terminal 5, and a movable contact terminal 9. Insulating component 11, pin 13, and rotor 15.
[0018]
The adjusting device 31 according to the present invention includes a pressing member 33 that presses the rotor 15 to move and support the movable contact 7 to a predetermined position, and an adjusting member 35 that presses and deforms the fixed contact terminal 5. The pressing element 33 is moved up and down by driving means (not shown), and the adjusting element 35 is moved up and down by driving means 37. These movements are given by servo motors and ball screws provided in both driving means.
[0019]
A continuity detecting means 39 and a continuity detecting means 41 are provided between the fixed contact terminal 5 and the adjuster 35 and between the fixed contact 3 and the movable contact 7, respectively. 35, and the presence or absence of contact between the fixed contact 3 and the movable contact 7 is detected and output to the position measuring means 43.
[0020]
Now, the pressing element 33 is lowered, and the movable contact 7 is moved to and supported by the fixed contact 3 through the rotor 15 (S61). At this time, there is an electrical continuity between the movable contact 7 and the fixed contact 3 (FIG. 5A).
[0021]
Next, the adjuster 35 is lowered to deform the fixed contact terminal 5 to perform the first adjustment (S63). As a result, the fixed contact 3 and the movable contact 7 start to be separated (FIG. 5B), and this is detected by the continuity detecting means 41. At that time, the position measuring means 43 measures the amount of movement of the adjuster from the initial position by the movement amount detecting means 45 such as an encoder provided in the servo motor of the driving means 37, and the fixed contact 3 reaching the desired adjustment position. Is stored as the first position regarding (S65).
[0022]
Next, the adjuster 35 is raised to restore the fixed contact terminal 5. When the restoration is completed, the adjuster 35 starts to be separated from the fixed contact terminal 5 (FIG. 5C), so that the electrical continuity detecting means 39 detects that the electrical continuity is lost. Then, the position measuring means 43 measures the movement amount of the adjuster from the initial position by the movement amount detecting means 45, and stores it as the second position relating to the fixed contact after restoration (S67).
[0023]
The restoration amount calculation means 47 calculates the restoration amount S from the difference in the movement amount of the adjuster that is the position relating to the first and second fixed contacts thus measured (S69). Then, the required deformation amount calculation means 49 calculates or selects a coefficient K corresponding to the restoration amount S, and calculates a necessary deformation amount S × K (S71). The coefficient K is determined in advance based on the result of position adjustment performed several times by this apparatus. The coefficient K may be defined in the form of a function with respect to the restoration amount S, or may be defined as a set of constant values that are divided into a plurality of ranges and applied according to the ranges. Then, the driving unit 37 performs the second adjustment by lowering the adjuster 35 by the required deformation amount S × K (FIG. 5D) downward from the desired adjustment position (S73).
[0024]
Thereafter, the adjuster 35 is raised to perform the inspection after adjustment. As a result, when the fixed contact 3 and the movable contact 7 start to contact each other and reach a desired adjustment position (FIG. 5 (e)), electrical continuity is generated by the contact between them, and this is detected by the continuity detecting means 41. To do. The position measuring means 43 measures the amount of movement of the adjuster from the initial position at this time, and stores it as the third position relating to the fixed contact 3 that has reached the desired adjustment position (S75).
[0025]
Further, when the adjuster 35 is raised and the fixed contact terminal 5 and the adjuster 35 start to be separated and the restoration accompanying the second adjustment is completed, the electrical continuity is lost due to the separation of the two, and this is detected as the continuity detecting means. 41 (FIG. 5 (f)). The position measuring means 43 measures the amount of movement of the adjuster from the initial position at this time, and stores it as the fourth position related to the fixed contact 3 after restoration (S77). The adjustment position inspecting means 51 compares the two movement amounts to determine whether the fixed contact position after the adjustment, that is, the restoration after the second adjustment is within the allowable error range of the desired adjustment position. (S79).
[0026]
As described above, when the fixed contact 3 and the movable contact 7 supported at a predetermined position start contact before the restoration accompanying the second adjustment is completed, the actual fixed contact position after restoration and the desired position It is possible to measure how much error there is in the adjustment position. However, if the restoration is completed without the fixed contact 3 and the movable contact 7 coming into contact with each other due to an adjustment failure, it is found that the fixed contact position is out of the allowable error range. I can't measure how much. Therefore, even when the restoration is completed without the fixed contact 3 and the movable contact 7 being in contact with each other, in order to measure the error of the fixed contact position after the adjustment, FIGS. It is preferable to change the support position of the movable contact 7 between the adjustment shown in FIG. 5 and the inspection shown in FIGS. For example, at the time of inspection, the support position of the movable contact 7 is set slightly downward.
[0027]
FIG. 6 is a diagram showing the transition of the fixed contact 3, the movable contact 7 and the adjuster during the adjustment by the second position adjusting method according to the present invention. As can be seen by comparing FIG. 5A and FIG. 6A, in the second position adjustment method, even when the movable contact 7 moves to a predetermined position, there is no electrical conduction between the fixed contacts 3. (FIG. 6A). Now, the pressing element 33 is lowered, and the movable contact 7 is moved to a predetermined position via the rotor 15 and supported (S61). At this time, there is no electrical continuity between the movable contact 7 and the fixed contact 3 (FIG. 6A).
[0028]
Next, the adjuster 35 is raised to deform the fixed contact terminal 5 to perform the first adjustment (S63). As a result, the contact between the fixed contact 3 and the movable contact 7 starts (FIG. 6B), and this is detected by the continuity detecting means 41. At that time, the position measuring means 43 measures the amount of movement of the adjuster from the initial position by the movement amount detecting means 45 such as an encoder provided in the servo motor of the driving means 37, and the fixed contact 3 reaching the desired adjustment position. Is stored as the first position regarding (S65).
[0029]
Next, the adjuster 35 is lowered to restore the fixed contact terminal 5. When the restoration is completed, the adjuster 35 starts separation from the fixed contact terminal 5 (FIG. 6C), so that the continuity detecting means 39 detects that the electrical continuity is lost. Then, the position measuring means 43 measures the movement amount of the adjuster from the initial position by the movement amount detecting means 45, and stores it as the second position relating to the fixed contact after restoration (S67).
[0030]
The restoration amount calculation means 47 calculates the restoration amount S from the difference between the desired adjustment position thus measured and the movement amount of the adjuster, which is the position relating to the fixed contact after restoration (S69). Then, the required deformation amount calculation means 49 calculates or selects a coefficient K corresponding to the restoration amount S, and calculates a necessary deformation amount S × K (S71). The coefficient K is determined in advance based on the result of position adjustment performed several times by this apparatus. The coefficient K may be defined in the form of a function with respect to the restoration amount S, or may be defined as a set of constant values that are divided into a plurality of ranges and applied according to the ranges. Then, the drive unit 37 performs the second adjustment by raising the adjuster 35 by the necessary deformation amount S × K (FIG. 6D) downward from the desired adjustment position (S73).
[0031]
Thereafter, the adjuster 35 is lowered to perform the inspection after adjustment. As a result, when the fixed contact 3 and the movable contact 7 start to be separated and reach a desired adjustment position (FIG. 6 (e)), there is no electrical continuity due to the separation, and the continuity detecting means 41 detects this. To do. The position measuring means 43 measures the amount of movement of the adjuster from the initial position at this time, and stores it as the third position relating to the fixed contact 3 that has reached the desired adjustment position (S75).
[0032]
When the adjuster 35 is further lowered and the fixed contact terminal 5 and the adjuster 35 start to be separated and the restoration accompanying the second adjustment is completed, the electrical continuity is lost due to the separation of the two, and this is detected as the continuity detecting means. It detects by 41 (FIG.6 (e)). The position measuring means 43 measures the amount of movement of the adjuster from the initial position at this time, and stores it as the fourth position related to the fixed contact 3 after restoration (S77). The adjustment position inspection means 51 compares the two movement amounts to determine whether the fixed contact 3 and the movable contact 7 have started separation after the adjustment, that is, before the restoration accompanying the second adjustment. Inspect (S79).
[0033]
In this second position adjustment method, in order to measure the error of the fixed contact position after the adjustment when the restoration is completed without the fixed contact 3 and the movable contact 7 being separated, It is preferable to change the support position of the movable contact 7 during the adjustment shown in FIGS. 6A to 6D and during the inspection shown in FIGS. 6E and 6F. For example, at the time of inspection, the support position of the movable contact 7 is set slightly upward.
[0034]
【The invention's effect】
According to the present invention, it is possible to adjust the contact start position of a contact with high accuracy regardless of measurement variation, setting device adjustment variation, and movable contact deformation variation.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of a component having a fixed contact and a movable contact and a conventional position adjusting device for the fixed contact.
FIG. 2 is a diagram showing positions of a fixed contact 3 and a movable contact 7 during position adjustment.
FIG. 3 is a schematic configuration diagram of a component having a fixed contact and a movable contact and a position adjusting device for the fixed contact according to the present invention.
FIG. 4 is a follow chart of a position adjustment method according to the present invention.
FIG. 5 is a diagram showing the transition of the fixed contact 3, the movable contact 7 and the adjuster during adjustment by the first position adjustment method according to the present invention.
FIG. 6 is a diagram showing transitions of the fixed contact 3, the movable contact 7 and the adjuster during adjustment by the second position adjustment method according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 3 ... Movable contact 5 ... Movable contact terminal 7 ... Drive contact 33 ... Presser 35 ... Adjuster 39, 41 ... Conduction detection means 43 ... Position measurement means 45 ... Movement amount detection means 47 ... Restoration amount calculation means 49 ... Necessary deformation amount Calculation means 51 ... Adjustment position inspection means

Claims (22)

In the fixed contact position adjusting method for deforming the fixed contact terminal so that the fixed contact provided on the fixed contact terminal starts contact with the movable contact when the movable contact moves by a certain amount,
A movable contact support step for supporting the movable contact at a predetermined position;
A first deformation step for deforming the fixed contact terminal;
A first measurement step of measuring a first position of the fixed contact that reaches a desired adjustment position by the first deformation step;
A second measuring step of measuring a second position relating to the fixed contact after restoration relating to the elastic deformation of the first deforming step;
A restoration amount calculating step for obtaining a restoration amount based on the first and second positions;
A necessary deformation amount calculating step for determining a necessary deformation amount for obtaining a deformation state of the fixed contact terminal so that the fixed contact is at the desired adjustment position based on the restoration amount;
And a second deformation step for deforming the fixed contact terminal to the required deformation amount. 2. The method according to claim 1, wherein, in the required deformation amount calculating step, the required deformation amount is determined based on a coefficient determined corresponding to the restoration amount and the restoration amount. After the second deformation step,
Measuring a third position relating to the fixed contact that reaches a desired adjustment position by restoration related to elastic deformation of the second deformation step;
The step of measuring the fourth position relating to the fixed contact after restoration is compared with the third and fourth positions, and whether the fixed contact position after restoration is within an allowable error range of a desired adjustment position. The method according to claim 1, further comprising an inspection step of inspecting the above. When the movable contact is supported at a predetermined position in the movable contact support step, when the fixed contact and the movable contact are in contact with each other,
The first position is a position related to the fixed contact when the fixed contact and the movable contact start to be separated,
It said third position, method according to claim 3, characterized in that the fixed contact and the movable contact is positioned about said stationary contact when starting contact. When the movable contact is supported at a predetermined position in the movable contact support step, when the fixed contact and the movable contact are separated,
The first position is a position related to the fixed contact when the fixed contact and the movable contact start to contact,
It said third position The method of claim 3 in which the fixed contact and the movable contact is characterized in that it is a position relative to the fixed contact when starting separation. 4. The method according to claim 3 , wherein in the first and second deformation steps, the deformation is performed by moving an adjuster that presses one end of the fixed contact terminal in a certain direction. 5. The second and fourth positions are positions related to the fixed contact when the adjuster and the fixed contact terminal start to be separated by moving the adjuster in a direction opposite to the fixed direction. The method according to claim 6. The method according to claim 6 or 7, wherein a moving amount from an initial position of the adjuster is measured as a position related to the fixed contact. In the restoration amount calculating step, the difference between the first and second positions is obtained as the restoration amount,
In the required deformation amount calculating step, when the first position is X, the restoration amount is S, and a coefficient determined in accordance with the restoration amount is K, the following required movement amount = X + K × S
The required movement amount from the initial position of the adjuster according to is determined as the required deformation amount,
The method according to claim 8, wherein the second deformation step is performed by moving the adjuster in the constant direction by the necessary movement amount. The method according to any one of claims 4 to 9, wherein the presence or absence of contact between the fixed contact and the movable contact is determined by electrical conduction. Completion of restoration of the fixed contact terminal is determined by the presence or absence of contact between the fixed contact terminal and the adjuster, and the presence or absence of contact between the fixed contact terminal and the adjuster is determined by electrical conduction. 10. A method according to any one of claims 7-9. In the fixed contact position adjusting device for deforming the fixed contact terminal so that the fixed contact provided on the fixed contact terminal starts contact with the movable contact when the movable contact moves by a certain amount,
Movable contact support means for supporting the movable contact at a predetermined position;
Fixed contact terminal deformation means for deforming the fixed contact terminal;
Position measuring means for measuring the position of the fixed contact;
A restoration amount calculating means for obtaining a restoration amount relating to elastic deformation of the fixed contact terminal;
A required deformation amount calculating means for obtaining a required deformation amount for the fixed contact terminal to obtain a desired deformation state;
The position measuring means includes a first position related to the fixed contact that reaches a desired adjustment position by deformation by the fixed contact terminal deforming means, and a second position related to the fixed contact after restoration related to elastic deformation of the deformation. Measure and
The restoration amount calculation means obtains the restoration amount based on the first and second positions,
The required deformation amount calculating means determines the necessary deformation amount so that the fixed contact is at the desired adjustment position based on the restoration amount,
The fixed contact position adjusting device is characterized in that the fixed contact terminal deforming means deforms the fixed contact terminal again to the required deformation amount. 13. The apparatus according to claim 12, wherein the required deformation amount calculating means determines the necessary deformation amount based on the restoration amount and a coefficient determined corresponding to the restoration amount. The position measuring means includes, after the second deformation, a third position related to the fixed contact that reaches a desired adjustment position by restoration related to the elastic deformation, and a fourth position related to the fixed contact after the restoration. Measure
An adjustment position inspection means for comparing the third and fourth positions and inspecting whether or not the fixed contact position after restoration is within an allowable error range of a desired adjustment position is further provided. Item 14. The device according to Item 12 or 13. When the movable contact is supported at a predetermined position by the movable contact support means, when the fixed contact before adjustment and the movable contact are in contact,
The first position is a position related to the fixed contact when the fixed contact and the movable contact start to be separated,
15. The apparatus according to claim 14 , wherein the third position is a position related to the fixed contact when the fixed contact and the movable contact start to contact. When the movable contact is supported at a predetermined position by the movable contact support means, when the fixed contact and the movable contact before adjustment are separated,
The first position is a position related to the fixed contact when the fixed contact and the movable contact start to contact,
15. The apparatus according to claim 14 , wherein the third position is a position with respect to the fixed contact when the fixed contact and the movable contact start to separate. 15. The apparatus according to claim 14 , wherein the fixed contact terminal deforming means is an adjuster that moves in a fixed direction and presses one end of the fixed contact terminal. The second and fourth positions are positions with respect to the fixed contact when the adjuster and the fixed contact terminal start to be separated by moving the adjuster in a direction opposite to the fixed direction. The device according to claim 17, characterized in that The apparatus according to claim 17 or 18, wherein the position measuring unit measures a movement amount of the adjuster from an initial position. The restoration amount calculation means obtains the difference between the first and second positions as the restoration amount,
When the first position is X, the restoration amount is S, and the coefficient determined corresponding to the restoration amount is K, the required deformation amount calculation means is the following required movement amount = X + K × S
The required movement amount from the initial position of the adjuster given by is determined as the required deformation amount,
The apparatus according to claim 19, wherein the fixed contact terminal deforming unit performs the re-deformation by moving the adjuster in the fixed direction by the necessary movement amount. The apparatus according to any one of claims 15 to 20, further comprising means for inspecting continuity between the fixed contact and the movable contact. 21. The apparatus according to any one of claims 18 to 20, further comprising continuity inspection means between the fixed contact terminal and the adjuster.

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