JP3489940B2 - Oblique assembly detector - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oblique assembly detecting device, and more particularly, to a device for detecting oblique assembly of bolts, pins, plug screws or the like assembled by press fitting or screwing into a base device. .

[0002]

2. Description of the Related Art In general, bolts and plug screws are used for closing automatic transmissions and hydraulic systems of engines.
It is necessary to check whether such bolts, plug screws, etc. are tightened with a predetermined tightening torque to perform a required function, and whether they are tightened in a correct posture.

From the above point of view, in order to detect the oblique mounting of the plug screw or the like, for example, the structure shown in FIG. 6A is used to prevent the insufficient tightening or the oblique mounting by visual inspection. There is a tentative plan. In FIG. 6A, 1
Is a plug screw, 2 is a base device to which the plug screw is fastened, and 100 is an oblique assembly detection device (hereinafter referred to as a trial device). The trial device 100 is a tubular body 101.
And the detection body 1 kept slidable along the inside of the tubular body 101.
02, and an abutting portion 103 that abuts on the head portion 1A of the plug screw 1 is attached to the end portion of the detection body 102 so that the position in the sliding direction can be adjusted. Reference numeral 104 denotes a spring hooking member that is fixed to the detection body 102 and is slidable along the vertical groove 101A of the tubular body 101, and 105 is fixed to the tubular body 101, and a spring 106 is provided between the spring hooking member 104 and the spring hooking member 104. It is a spring mounting member for holding.

FIG. 6B shows a normal state (I) of the plug screw 1 screwed on the plug mounting surface 2A of the mother device 2.
And the state (II) screwed diagonally are shown by comparing left and right. As is clear from this figure, the maximum exposed height on the plug mounting surface 2A of the head 1A is H when the plug screw 1 is normally screwed (I), whereas In the state of (II) in which the screw 1 is obliquely screwed in with the inclination angle θ °, the maximum exposed height is H ′ (H ′> H), which is increased by the difference Δh. Therefore, in the case of the trial device 100, the length of the contact portion 103 is adjusted so that the detection side end portion of the tubular body 101 is attached to the plug mounting surface 2A as shown in FIG.
If the plug screw 1 is normally screwed when it is brought into contact with the cylindrical body 10, the end portion 102A of the detection body 102 is
It is made to coincide with the open end 101B of No. 1. Thus, the exposure amount 1 of the detection body 102 exposed from the open end 101B
By visually recognizing 02B, the obliquely assembled state of the plug screw 1 can be detected.

[0005]

However, like the above-mentioned trial device 100, the plug mounting surface 2 of the base device 2 is used.
In the state where one end of the cylindrical body 101 is brought into contact with A, the detection body 10
2B exposed from the cylindrical body open end 101B
If the oblique mounting of the plug screw 1 is detected based on, there is an individual difference in the screwing amount depending on the plug screw 1,
In particular, if the presence or absence of diagonal assembly is determined only by the exposure amount 102B as in this example, there is a risk of misjudgment.
It is difficult to set the discrimination threshold. Furthermore, it is difficult to accurately set the trial draft device 100 on the plug mounting surface 2A, and there is a risk of misjudgment depending on how the operator performs the setting operation, and the reliability of the judgment result is low.

[0006] If the mother body is made of a relatively soft material such as aluminum, or if a sealing material such as a plug screw is applied for oil filling, the tightening torque rises smoothly with respect to the entry margin. For this reason, it is difficult to determine when the fastening is completed, and the screw is tightened while tilted.

The object of the present invention is to pay attention to the above-mentioned conventional problems, and in order to solve the problems, obliquely assembling members, such as plug screws, which are planted vertically with respect to the mother body assembling surface. An object of the present invention is to provide an oblique assembly detection device that can be accurately detected with a simple configuration and that can be installed in a mass production process to continuously detect the oblique assembly.

[0008]

In order to achieve such an object, a first embodiment of the present invention is an oblique assembly detecting device for an assembly member vertically implanted on an assembly surface of a device. ,
A reference member that is positioned so that the mounting surface serves as a reference surface in the detection state; and a columnar detection pin whose one end abuts the mounting member in the detection state along the implantation direction thereof, A vertical direction with respect to the reference plane that tiltably supports the vicinity of the one end of the detection pin and biases one end of the detection pin toward the head of the assembly member in the detection state. And a tilt detection sensor that is supported by the reference member and that can detect the tilt of the detection pin with respect to the reference plane by detecting the other end of the detection pin in the detection state. And is provided.

A second aspect of the present invention is an oblique assembly detection device for an assembly member vertically implanted on an assembly surface of a device, which comprises a plurality of reference pins, and which is provided in a detection state. A reference member capable of setting a reference surface that follows the assembly surface by bringing a plurality of reference pins into contact with a predetermined position of the device,
A fixing member that is fixed to the means that guides the detection device to the detection position and that elastically supports the reference member via an elastic member, and one end portion of the mounting member in the detection state that follows the implantation direction thereof. A columnar detection pin that abuts and the vicinity of the one end of the detection pin are tiltably supported, and one end of the detection pin is biased toward the head of the assembly member in the detection state. And a detection pin supporting member movable in the vertical direction with respect to the reference surface, and supported by the reference member, by detecting the other end of the detection pin in the detection state, the detection pin with respect to the reference surface. An inclination detection sensor capable of detecting inclination is provided.

According to the present invention, the mounting surface is positioned as the reference surface by the reference member, and in this state, the detection pin is supported by the reference member via the detection pin support member so that one end thereof is tiltably supported. The other end position of the detection pin is detected by the inclination detection sensor. The inclination of the assembly member with respect to the assembly surface is converted into the inclination of the detection pin with respect to the reference surface, and the inclination is detected at the other end of the detection pin. Since the displacement is enlarged as a position displacement, a fine inclination of the mounting member with respect to the mounting surface can be detected easily and accurately. Further, the detection operation can be continuously performed by incorporating the device of the present invention in one step of the assembling work.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings.

The present embodiment is an application example as an oblique assembly detection device for an oil retaining plug screw which is screwed in a direction perpendicular to the plug mounting surface in an automatic transmission.

In FIGS. 1 and 2, reference numeral 1 is a plug screw to be detected, and 2A is a plug mounting surface of a mother automatic transmission case 2 to which the plug screw 1 is screwed. In this example, the plug screw 1 is a taper screw, and the plug mounting surface 2A is preliminarily formed with a screw hole 2B in the vertical direction. Although not described in detail, the plug screw 1 is inserted into the screw hole 2B. It is screwed by a plug assembly device (not shown). Therefore, the diagonal assembly detection device 10 according to the present embodiment is, after this screwing, guided diagonally to the axial direction of the head portion 1A of the plug screw 1 and finished the screwing according to the procedure described later. Detect sticking.

In FIGS. 1 and 2A and 2B,
Reference numeral 11 denotes a member (hereinafter referred to as a fixing member) for fixing and supporting the entire diagonal assembly detection device 10 on its supporting means. The supporting means (not shown) supports the entire diagonal assembling apparatus 10 via the fixing member 11. Then, the supporting means keeps the fixing member 11 movably in the vertical direction and the direction orthogonal to the paper surface in FIGS. 2A and 2B, and the oblique assembling apparatus 10 has the detecting position and the plug as shown in FIG. It is controlled so that it can be set to a retracted position that is not related to the screw 1.

Reference numeral 12 denotes a fixing member 11 and a plurality of elastic members 13
It is a reference plate (reference member) that is elastically supported via. A plurality of (three in this example) reference pins 12A, 12B, 12C are attached to the reference plate 12 so that the length from the lower surface of the reference plate to a predetermined reference setting surface of the base 2 can be adjusted. ing. Thus, the reference plate 12 can be kept exactly parallel to the plug mounting surface 2A in a state where the pins 12A to 12C are in contact with the setting surface of the mother body 2. In addition, the elastic member 13 has the reference plate 12 with respect to the plug mounting surface 2A,
It is intended to function so as to keep them in exactly parallel positions.

Reference numeral 14 is an oblique detection sensor, 15 is a sensor support member integrally attached to the reference plate 12 in a state where the oblique detection sensor 14 is fixedly supported, and 16 is an oblique detection sensor 14 for mounting the plug screw 1 as described later. It is a detection pin for detecting diagonal assembly.

As shown in FIG. 2A, the detection pin 16 has a contact surface portion 16A which is in close contact with the end surface of the plug screw head 1A,
It has a spherical bearing portion 16B that allows the inclination of the contact surface portion 16, a columnar portion 16C, and a detection portion 16D that is provided at the tip of the columnar portion 16C and faces the diagonal detection sensor 14.

Reference numeral 17 designates the detection pin 16 as its spherical bearing portion 16
A floating support member that swingably supports the reference plate 1 by means of a linear bearing 30.
It is supported so as to be relatively movable with respect to 2, and is urged by a coil spring 18 in the contact direction with the plug screw 1. Also,
Reference numeral 19 denotes a support spring latching member that is formed in a columnar shape, and one end of each of a plurality (three in the present example) of pin support springs 20 is latched. Reference numeral 21 latches the other end of each of the pin support springs 20. And a support ring 22 for slidably supporting the columnar portion 16C of the detection pin 16, and 22 a plurality of support spring retaining members 19
Is a frame body attached to and fixed on the reference plate 12.

Oblique assembly detection device 10 having such a configuration
An oblique assembling detection operation of the plug screw 1 on the plug mounting surface 2A by means of will be described with reference to FIGS.

Fixing member 1 supported by supporting means (not shown)
The reference plate 12 elastically supported by 1 is moved as shown in FIG. 3, and the three reference pins 12A, 12B, 12 are moved.
C is brought into contact with the reference setting surfaces 2SA, 2SB, 2SC of the mother body 2, respectively. In FIG. 3, the reference pins 12A-1
The movement of the reference plate 12 with 2C is shown in simplified form for the sake of clarity. Thus,
The reference pins 12A to 12C are respectively the reference setting surface 2SA to
Even if the parallelism between the fixing member 11 and the plug mounting surface 2A is not maintained in the state of contacting the 2SC, the reference plate 12 is deformed with respect to the plug mounting surface 2A of the mother body 2 by the deformation of the elastic member 13. Kept parallel. The contact surface portion 16A of the detection pin 16, which is swingably and elastically supported by the reference plate 12 via the floating support member 17, is in close contact with the top surface of the plug screw head 1A by the spring force of the coil spring 18. Kept in.

FIGS. 4A and 4B show a state where such a plug screw 1 is obliquely attached and detected.
(A) shows a state where the plug screw 1 is normally (vertically) screwed to the plug mounting surface 2A, and (B) shows a state where the plug screw 1 is obliquely screwed.

The function of the diagonal detection sensor 14 will be described below. As a suitable example of the diagonal detection sensor 14, for example, a metal sensitive type is preferable. That is, the detection pin 1
The detection unit 16D of No. 6 and the detection sensor 14 are made of, for example, a metal capable of forming a magnetic circuit. Therefore, when the center of the detection unit 16D deviates from the center of the diagonal detection sensor 14 by an allowable range or more, the physical quantity is converted into an electric signal and the “on” state of the diagonal detection sensor 14 becomes “off”.

Thus, as shown in FIG. 4B, when the contact surface 16A of the detection pin 16 is in close contact with the top surface of the obliquely assembled plug screw head 1A, the inclination is detected by the detection pin. In the portion 16D, it is detected as an enlarged amount corresponding to the lever ratio. As a result, even if the inclination is a small amount, the diagonal detection sensor 14 can detect it and can surely detect the diagonal assembly. By the way, as shown in FIG. 4A, the dimension from the end of the contact surface portion 16A of the detection pin 16 to the center of the spherical bearing portion 16B is a, and the dimension from the center of the spherical bearing portion 16B to the tip of the detecting portion 16D is b. Lever ratio b /
When a is set to about 7.5, the amount by which the head 1A of the plug screw 1 shifts due to its inclination is the same as that of the detecting portion 16D of the detecting pin 16 as shown in FIG. 4C regardless of the inclination direction. It is detected in a state of being magnified about 7.5 times between the center of both of the tip of the diagonal detection sensor 14 and the center.

In FIG. 4C, a portion S indicated by a broken line shows a region detected by the diagonal detection sensor 14, and the detection portion 16D of the detection pin 16 is deviated from this region S. The output signal from the diagonal detection sensor 14 sometimes turns "off". Therefore, the diagonal detection sensor 14
The distance from the tip of the plug to the top surface of the plug screw head 1A should be detected within the above-mentioned detection area S in consideration of variations in height on the plug mounting surface 2A when the plug screw 1 is screwed. Is set. Therefore, the position of the diagonal detection sensor 14 can be adjusted in the vertical direction in FIG.
15A is a set screw for position adjustment provided on the sensor mounting portion of the sensor support member 15.

Although the embodiment described above has been applied to the tapered plug screw assembled to the automatic transmission, the application of the present invention is not limited to this.
It can also be applied to a small-diameter pin or the like that is press-fitted into the mother body. FIG. 5 shows an embodiment for detecting the oblique assembly of the small diameter pin. Here, 31 is a mounting surface 32 of the base body 32.
It is a small diameter pin that is vertically press-fitted into A. The small-diameter pin 31 has a small diameter in many cases and does not have a head. Therefore, the contact surface portion 16A of the detection pin 16 is formed in a flat-headed cap shape as shown in this figure, and the cap-shaped contact surface portion 16A is fitted to the end portion of the small diameter pin 31. Similarly, diagonal detection of the small diameter pin 31 can be detected. In FIG. 5, details of the structure are omitted, and a part of the structure is schematically shown for easy understanding.

In addition to the above, the present invention can also be applied to the detection of the inclination and depth of each member mounting hole in the mother body. In the case of depth detection, for example, depth error is detected. It may be configured so that enlargement is detected by converting to the inclination of the pin.

In the above-described embodiment, the reference plate 12 is elastically supported by the fixing member 11 via the elastic member 13. However, the parallelism between the reference plate 12 and the plug mounting surface 2A depends on the device. When secured by installation or the like, the fixing member 11 and the reference plate 12 may be solidly integrated as a reference member. In this case, the reference pins (12A to 12C) are naturally unnecessary.

[0028]

As described above, according to the present invention, the reference member is positioned so that the mounting surface serves as the reference surface in the detection state, and the mounting member is planted in the mounting member in the detection state. A columnar detection pin whose one end abuts along the direction, and the one end of the detection pin that is tiltably supported in the vicinity of the one end and the one end of the detection pin is assembled in the detection state. A detection pin support member that is movable in the vertical direction with respect to the reference surface so as to be biased toward the head of the member, and the other end of the detection pin that is supported by the reference member and that is in the detection state. With this, since the inclination detection sensor capable of detecting the inclination of the detection pin with respect to the reference plane is provided, it is possible to contribute to the improvement of the assembling accuracy of the assembling member to the mother body.

Further, by providing a plurality of reference pins on the reference member, the reference member can be set following the above-mentioned assembly surface through the plurality of reference pins even if there is unevenness in the vicinity of the assembly surface of the mother body. Since the amount of inclination of the mounting member can be increased via the detection pin that is kept in the same direction as the mounting member, the reliability of the above-described detection of the mounting accuracy can be improved.

Moreover, it is possible to support the oblique assembly detecting device according to the present invention by the supporting means via the fixing member, and move the device to the detecting position and the retracted position by operating the supporting means. According to the assembly work of the assembly member in one process of the continuous assembly work to the mother body, the oblique detection process of the assembly member can then be incorporated,
Workability can be significantly improved.

By applying the taper plug screw used in the hydraulic system of the engine or the automatic transmission to the base body, it is possible to contribute to the suppression of oil leakage.

[Brief description of drawings]

FIG. 1 is a bottom view showing a configuration example of an oblique assembly detection device according to the present invention as viewed from the assembly member side.

FIG. 2 is a diagram showing the configuration of the oblique assembly detection device shown in FIG.
It is an explanatory view shown by a cross-sectional view (A) taken along the line A and a view (B) viewed from the direction C thereof.

FIG. 3 is a perspective view illustrating an operation at the time of detecting diagonal assembly according to the present invention.

FIG. 4 is an explanatory diagram showing relative postures of a detection pin and an oblique detection sensor according to the present invention in a detection state, by a partially enlarged view (C) of (A), (B) and (B).

FIG. 5 is an explanatory view partially showing a configuration according to another embodiment of the present invention.

FIG. 6 shows a configuration of a tentative example as a conventional example and a state of quality of a plug screw thereof, (I) and (II) of (A) and (B).
It is an explanatory view shown by.

[Explanation of symbols]

1 plug screw 1A head 2,32 Mother (engine) 2A, 32A (plug) mounting surface 2B screw hole 2SA, 2SB, 2SC standard setting surface 10 Oblique mounting detection device 11 Fixed member 12 plate (reference member) 12A, 12B, 12C Reference pin 13 Elastic member 14 Oblique detection sensor 15 Sensor support member 16 detection pins 16A contact surface 16B spherical bearing 16C pillar 16D detector 17 Floating support member 18 coil spring 19 Spring retaining member 20 springs 21 Intermediate support ring 22 frame 31 small diameter pin

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) G01B 21/22 G01B 5/24 B23P 19/00

Claims (9)

(57) [Claims] 1. A diagonal assembly detection device for an assembly member vertically implanted in an assembly surface of a device, the reference member being positioned so that the assembly surface serves as a reference surface in a detected state. In the detection state, a columnar detection pin whose one end abuts on the assembly member along the implantation direction thereof, and the vicinity of the one end of the detection pin are tiltably supported and in the detection state. A detection pin support member that is movable in the vertical direction with respect to the reference surface so as to bias one end of the detection pin toward the head of the assembly member, and is supported by the reference member to detect the detection state. And a tilt detection sensor capable of detecting the other end of the detection pin to detect the tilt of the detection pin with respect to the reference plane. 2. A diagonal assembly detection device for an assembly member vertically implanted on an assembly surface of a device, comprising a plurality of reference pins, wherein the plurality of reference pins are set in a predetermined state of the device in a detection state. A reference member that can set a reference surface that follows the assembly surface by abutting on the position, and a fixing member that is fixed to a unit that guides the detection device to the detection position and elastically supports the reference member via an elastic member. A columnar detection pin, one end of which comes into contact with the assembly member in the detection state in the direction of its implantation, and the vicinity of the one end of the detection pin is tiltably supported and is in the detection state. A detection pin support member that is movable in the vertical direction with respect to the reference plane so as to bias one end of the detection pin toward the head of the assembly member; In the state of the other of the detection pin Part obliquely assembled detection device characterized by comprising a detectable inclination sensor an inclination with respect to the reference plane of the detection pin by detecting. 3. The diagonal assembly according to claim 2, wherein the plurality of reference pins are protruded from the reference member so as to abut a plurality of preset abutment surfaces of the device. Detection device. 4. The oblique assembly detection device according to claim 3, wherein the plurality of reference pins have adjustable projecting lengths individually. 5. A means for guiding the detection device to a detection position,
The oblique assembly detection device according to claim 2, wherein the fixing member is movable to at least the detection position and a retracted position that is not involved in the detection. 6. The detection pin support member is tiltably supported by the detection pin support member via a spherical bearing portion in the vicinity of one end of the detection pin, and the detection pin support member is provided with a spring in the vertical direction of the reference plane. The oblique assembly detection device according to any one of claims 1 to 5, wherein the oblique assembly detection device is held movably. 7. The tilt detection sensor is a means for detecting a positional displacement of the other end of the detection pin whose one end abuts on the assembling member. The oblique assembly detection device according to the above item. 8. The tilt detection sensor is a metal detection sensor, the other end of the detection pin is made of metal, and the displacement is measured when the displacement of the other end of the detection pin exceeds a threshold value. The oblique assembly detection device according to claim 7, wherein the inclination of the assembly member is detected by an output signal from the inclination detection sensor. 9. The oblique assembly detection device according to claim 1, wherein the assembly member is an oil filling plug screw of the device.