KR101393362B1 - Sensor holding apparatus - Google Patents

Abstract

The present invention relates to a sensor holding apparatus. An embodiment of the present invention relates to an apparatus for holding a sensor which touches an object to be detected and senses the vibration of the object. The sensor holding apparatus includes a holder where the sensor is installed and a buffering member which surrounds the outside of the sensor in the holder and prevents the vibration of the sensor.

Description

SENSOR HOLDING APPARATUS

The present invention relates to a sensor holding device, and more particularly to a vibration sensor holding device.

Generally, automobile parts have natural frequency according to shape and material. These components are subjected to greater vibrations in the vibrations of the natural frequency band, which cause vibrations or noise of the vehicle. Especially, If the natural frequency bands are the same, the vibrations of the natural frequency band are amplified when the vehicle is running or braking, resulting in greater vehicle vibration and noise.

Between automotive parts In order to make the natural frequency band different, It is necessary to analyze natural frequencies and to have different natural frequencies.

Conventionally, a vibration sensor has been used to detect natural vibration of an object to be analyzed. Sensors for sensing natural vibration must be able to sense external vibrations well, and at the same time be able to sense vibrations accurately without being affected by external vibrations.

One of the conventional vibration sensor fixing devices is a vibration sensor fixing device mounted on one end of a cylinder rod, and a vibration sensor is pressed against a measurement position of a vibration structure by a pneumatic pressure acting on a cylinder rod of a pneumatic cylinder. However, there is a problem that it is difficult for the vibration sensor fixture to accurately hold the vibration sensor, and the vibration sensor can self-vibrate, so that it is difficult to accurately detect the vibration.

Korean Patent No. 10-0574839 (April 21, 2006)

The present invention proposes a sensor holding device capable of stably holding a sensor to reduce its own vibration and minimize a measurement error.

Other objects and advantages of the present invention will become apparent to those skilled in the art from the following detailed description.

According to an embodiment of the present invention, there is provided an apparatus for holding a sensor for sensing a vibration of a sensing object in contact with a sensing object, the sensing device comprising: a holder to which the sensor is mounted; And a cushioning member configured to wrap the sensor and prevent the sensor from vibrating.

Meanwhile, the holder has a through hole having a step in the longitudinal direction, and the sensor can be fixed to the step with the buffer member interposed therebetween.

And a holder mounting part connected to the holder and elastically supporting the holder when the sensor contacts the sensing object.

Here, the holder mounting portion may include a first horizontal member capable of vertical movement, a second horizontal member disposed in parallel with the first horizontal member and having one side coupled to the holder, and a second horizontal member disposed between the first horizontal member and the second horizontal member, And an elastic portion that is interposed between the first horizontal member and the second horizontal member and resiliently changes the interval between the first horizontal member and the second horizontal member.

At this time, a hole is formed in the first horizontal member and the second horizontal member, one end of the elastic member is slidably engaged with the hole of the first horizontal member, the other end is inserted into the second horizontal member, And a spring inserted between the first horizontal member and the inner surface of the second horizontal member facing the first horizontal member and inserted into the support bar.

The holder mounting portion may further include a base portion including a cylinder for moving the first horizontal member in the up and down direction and connected to the cylinder and movable in the left and right direction, As shown in FIG.

Meanwhile, the holder mounting portion may further include a guide portion connected to the first horizontal member and guiding the operation of the cylinder.

According to the embodiment of the present invention, there is an effect of stably holding the sensor, thereby reducing the self-oscillation of the sensor and minimizing the measurement error.

If a through hole having a step is formed in the holder, the sensor can be seated in the portion where the step is formed, and it is convenient because the power supply line and the signal line can be connected to the sensor through the through hole.

When the holder holder for resiliently supporting the holder is provided, it is possible to keep the sensor in contact with the object to be inspected when measuring the vibration of the object to be inspected.

The holder holding portion can be configured such that the first horizontal member and the second horizontal member are arranged side by side and the elastic member is interposed between the first horizontal member and the second horizontal member to make the sensor holding apparatus compact, It is advantageous to measure the vibration of the inspection object having a flat shape.

When the elastic portion is composed of the support rod and the spring, the support bar guides the up and down movement of the second horizontal member while preventing the release of the spring, so that the sensor can stably contact the object to be inspected.

When the holder holder is configured to be movable left and right, it is convenient to place the sensor holding device in the idle space before the work, automatically send it to the work space at the time of work, and to load or unload the detection target at the work position.

When the guide portion for guiding the operation of the cylinder is provided, the first horizontal member is prevented from warping when the sensor contacts the sensing object, so that the sensor can stably contact the sensing object.

The effects of the present invention will be clearly understood and understood by those skilled in the art, either through the specific details described below, or during the course of practicing the present invention.

1 is a perspective view of a sensor holding apparatus according to an embodiment of the present invention;
2 is a side view of the sensor holding device according to the embodiment shown in Fig.
3 is a cross-sectional view taken along line AA in Fig.
4 is an operational view of the sensor holding device according to the embodiment shown in Fig.
5 is a side view of a sensor holding device according to another embodiment of the present invention.
6 is a side view of a sensor holding apparatus according to another embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other features and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings, It will be possible. The present invention is capable of various modifications and various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Hereinafter, an underwater sensor holding apparatus according to an embodiment of the present invention will be described in detail with reference to the drawings. In the present specification, the same reference numerals are assigned to the same components in different embodiments, and the description thereof is replaced with the first explanation.

FIG. 1 is a perspective view of a sensor holding apparatus according to an embodiment of the present invention, FIG. 2 is a side view of the sensor holding apparatus according to the embodiment shown in FIG. 1, and FIG. 3 is a sectional view taken along the A-A direction in FIG.

A sensor holding apparatus (100) according to one embodiment of the present invention includes a holder (1) and a buffer member (2).

The sensor holding device 100 is a device for holding the sensor 10. Here, the sensor 10 is a sensor 10 for sensing vibration of the sensing object 20 in contact with the sensing object 20 (see FIG. 4), and for example, corresponds to the acceleration sensor 10. On the other hand, the sensing object 20 corresponds to a brake disk or a lining of an automobile as an object to be vibrated.

The holder 1 is provided with a cushioning member 2 which surrounds the sensor 10 inside the holder 1 and prevents the sensor 10 from vibrating.

The cushioning member 2 is not affected by the vibration of the sensing object 20 when the sensor 10 senses the vibration of the sensing object 20. [ That is, it is possible to prevent the sensor 10 itself from being vibrated by the influence of vibration transmitted from the outside.

When the sensing object 20 is a substance attached to a magnet, the sensor holding device 100 directly attaches the sensing object 20 to the sensing object 20 using a magnetic force. It is possible to measure the vibration by making contact with the sensing object 20 using the holder mounting portion 3 described later.

Hereinafter, the configuration of each part will be described in detail.

Referring to FIG. 3, the holder 1 is formed with a through hole 11 having a step 12 in the longitudinal direction.

The holder 1 is cylindrical in which both sides are open, and a step 12 is formed in which the sensor 10 is seated and engaged. A sensor (10) is coupled to one open side of the holder (1), and a power line (not shown) connected to the sensor (10) is passed through to the other open side.

Meanwhile, the holder 1 may be provided with a hole 13 for connecting a signal line when the output signal port of the sensor 10 is positioned on the outer circumference of the sensor 10. [

The buffer member (2) is coupled to the step (12) through a hole in one side of the holder (1). The buffer member 2 is a ring-shaped member. The outer side of the buffer member 2 is in contact with the inner side of the holder 1, and the sensor 10 is coupled to the inner side thereof.

Therefore, when the sensor 10 is coupled to the holder 1, the sensor 10 is fixed to the step 12 of the holder 1 via the buffer member 2.

The buffer member 2 may be made of rubber, silicone, urethane or the like as a soft solid having elasticity.

The sensor holding apparatus 100 may have a holder mounting portion 3 for more stably contacting the sensor 10 to the sensing object 20. [

1 and 2, the holder holder 3 is connected to the holder 1 and resiliently supports the holder 1 when the sensor 10 contacts the object to be sensed 20.

That is, the holder mounting portion 3 allows the sensor 10 to keep contact with the sensing object 20 while sensing the vibration of the sensing object 20. The sensor 10 may output the sensed vibration as a voltage signal according to time.

By using the holder holder 3 as described above, it is possible to stably bring the sensor 10 into contact with the sensing object 20 even when the sensing object 20 is not a substance attached to the magnet.

Hereinafter, the configuration of each part of the holder holder 3 will be described in detail.

The holder mounting portion 3 includes a first horizontal member 31, a second horizontal member 32, and an elastic portion 33.

The first horizontal member 31 can move up and down. Here, the up-and-down motion of the first horizontal member 31 may be performed by an actuator such as a cylinder or a motor or manually by an operator.

A hole is formed at one side of the first horizontal member 31 so that one end of the support rod 331 constituting the elastic portion 33 is coupled through the hole. The support bar 331 is slidably engaged with the hole of the first horizontal member 31.

The second horizontal member 32 is disposed in parallel with the first horizontal member 31 and has one side connected to the holder 1 and the other side connected to the first horizontal member 31 via the elastic portion 33. [ 31).

A hole for coupling the holder 1 is formed on one side of the second horizontal member 32. Further, a slit 321 is formed outwardly of the second horizontal member 32 from this hole. The slit can smoothly insert the holder 1 and the interval between the slits 321 can be narrowed by the engagement of the bolts 322 so that the holder 1 can be firmly fixed.

At this time, a plurality of holes may be formed in the second horizontal member 32, and two or more holders 1 may be coupled to measure vibrations using two or more sensors 10 to increase the accuracy of measurement.

On the other hand, the other end of the support bar 331 constituting the elastic part 33 is coupled to the other side of the second horizontal member 32. And a slit 323 may be formed on the outer side of the second horizontal member 31 from the hole. The slit 323 can smoothly insert the support rod 331 and narrow the gap between the slits 323 by the engagement of the bolts 324 to firmly fix the support rod 331.

The resilient portion 33 is interposed between the first horizontal member 31 and the second horizontal member 32 so that the gap between the first horizontal member 31 and the second horizontal member 32 is elastically .

The elastic portion 33 includes a support rod 331 and a spring 332.

One end of the support rod 331 is inserted and fixed in the hole of the second horizontal member 32 and the other end thereof is slidably engaged with the hole of the first horizontal member 31. [

The other end of the support rod 331 is made larger than the hole of the first horizontal member 31 or fixed to the washer 333 which is larger than the hole of the first horizontal member 31 to serve as a stopper for limiting the sliding distance of the support rod 331 can do.

The spring 332 is interposed between the first horizontal member 31 and the inner surface facing the second horizontal member 32 and the support bar 331 is inserted.

The detailed structure of the elastic part 33 thus constructed will be described below.

The spring 332 is located at the position of the hole formed on both sides between the inner surfaces of the first horizontal member 32 and the second horizontal member 33 facing each other. The support rod 331 is inserted into the hole of the first horizontal member 32, passes through the spring 332, and is inserted into the hole of the second horizontal member 32.

One end of the support rod 331 is fixed to the second horizontal member 32 by a method of bolt · nut, brazing, welding and the other end of the support rod 331 is fixed to the washer 333 ) By bolts, nuts, soldering, welding or the like so as to be slidably engaged with the holes of the first horizontal member 31.

Here, the spring 332 is not directly coupled to the first horizontal member 31 or the second horizontal member 32. When the spring 332 is directly coupled to the first horizontal member 31 or the second horizontal member 32, the vibration of the sensing object 20 is transmitted to the spring 332, the first horizontal member 31, And is transmitted to the entire member 32.

Thus, the elastic part 33 composed of the support rod 331 and the spring 332 can improve the precision of the vibration measurement of the sensing object 20 by reacting to the minute vibration of the sensing object 20.

In addition, the support rod 331 serves to guide the second horizontal member 32 to move up and down so that the sensor 10 can accurately contact the sensing object 20.

Meanwhile, one end of the support rod 331 may be slidably engaged with the hole of the second horizontal member 32, and the other end may be inserted and fixed in the hole of the first horizontal member 31. And both ends of the spring 332 may be fixed to the first horizontal member 31 and the second horizontal member 32. [

The holder mounting portion 3 includes a base portion 35 including a cylinder 34 for vertically moving the first horizontal member 31 and connected to the cylinder 34 and movable in the left- And the sensor 10 may be positioned above or below the sensing object 20 by the movement of the base 35. [

When the holder holding part 3 is constructed as described above, the sensor holding device 100 can be placed in the idle space before the work, and can be automatically sent to the work space during the work, and it is convenient to load or unload the detection target 20 to the work position Do.

The holder mounting portion 3 may further include a guide portion 36 connected to the first horizontal member 31 and guiding the operation of the cylinder 34.

Referring to FIG. 5, the guide unit 36 includes a first vertical member 361, a second vertical member 362, and a horizontal member 363.

The second vertical member 362 is coupled to the first horizontal member 31 via the horizontal member 363 and the first vertical member 361 is coupled to the second vertical member 362. Accordingly, the entire guide member 36 can move up and down together with the first horizontal member 31.

At this time, the second vertical member 362 moves along the body of the cylinder 34 to guide the operation of the cylinder 34.

Although the guide part 36 and the first horizontal member 31 are separately formed and coupled in the embodiment of the present invention, the guide part 36 and the first horizontal member 31 may be integrally formed have.

Further, as shown in the drawing, an auxiliary guide 38 coupled to the cylinder 34 (or the cylinder rest 37) may be further provided to guide the guide 36.

The sensor holding apparatus 100 according to an embodiment of the present invention operates as follows.

4 is an operational view of the sensor holding apparatus according to the embodiment shown in FIG.

In the figure, the natural frequency measurement system of the brake disk 20 having the sensor holding device 100 is shown.

The holder mounting portion 3 is moved after the brake disk 20 is placed on the disk mounting base 200 and the sensor 10 is moved to a working position opposed to the top surface of the brake disk 20. [

Next, the rod of the cylinder 34 is operated downward to bring the sensor 10 into contact with the upper surface of the brake disk 20 fixed to the disk mount 200.

At this time, the elastic portion 33 and the second horizontal member 32 are moved together with the first horizontal member 31 coupled to the rod 34 of the cylinder 34, and the holder 1 Is moved and the sensor 10 comes into contact with the object 20 to be sensed.

Next, when the brake disc 20 vibrates due to impact of the impact hammer 300, vibration is transmitted to the holder 1 to which the sensor 10 is attached. The vibration transmitted to the holder 1 is transmitted to the second horizontal member 32 again so that the elasticity of the elastic portion 33 makes it possible for the second horizontal member 32 to vibrate in accordance with the vibration of the brake disc 20 do.

In summary, the vibration of the second horizontal member 32 causes the sensor 10 of the holder 1 coupled thereto to vibrate in response to the vibration of the brake disc 20. [ Therefore, the sensor 10 keeps the state of contact with the brake disk 20 continuously. At this time, the shock absorbing member 2 prevents the sensor 10 itself from vibrating due to the vibration of the brake disc 20.

Accordingly, the sensor 10 can accurately measure the vibration of the brake disk 20 and can calculate the natural frequency of the brake disk 20 to be measured using the measured value.

Next, a sensor holding apparatus according to another embodiment of the present invention will be described in detail with reference to the drawings.

These embodiments are such that the sensor 10 is in contact with the lower portion of the sensing object 20 when compared with the above embodiment.

5 and 6, in order to make the sensor 10 contact the lower portion of the sensing object 20, the first horizontal member 31 of the sensor holding device 100 and the second horizontal member 31 of the sensor holding device 100, The member 32 and the elastic portion 33 are arranged in the reverse direction.

In the case of the embodiment shown in Fig. 5, the operator manually contacts the sensor 10 to the inspection target by moving the holder mounting portion 3 to the working position and then manually moving the first horizontal member 31 to the working position It is a form to let.

In the case of the embodiment shown in Fig. 6, the positional controllable driving element is used to automatically move the holder mounting portion 3 to the working position and then the first horizontal member 31 is moved to the working position So that the sensor 10 is brought into contact with the object to be inspected.

As described above, the driving elements of the sensor holding device can be automatically or manually selected in various ways depending on the environment. The configuration and method of the embodiments described above are not limited and can be implemented by selectively combining all or some of the embodiments so that various modifications can be made.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

1: Holder
11: through hole 12: step 13: hole
2: buffer member
3: holder holder
31: first horizontal member 32: second horizontal member 33: elastic member
34: cylinder 35: base portion 36: guide portion
37: Cylinder rest 38: Auxiliary guide
321, 323: slit 322, 324: bolt
331: support rod 332: spring 333: washer
361: first vertical member 362: second vertical member 363: horizontal member
10: Sensor
20: object to be detected, brake disc
100: Sensor holding device
200: Disc Cradle
300: Impact Hammer

Claims (7)

An apparatus for holding a sensor for sensing a vibration of a sensing object in contact with the sensing object,
A holder in which a through hole having a step in the longitudinal direction is formed and on which the sensor is mounted,
A cushioning member disposed at an inner circumferential surface of the holder and at the step, for covering and fixing the outer side of the sensor to prevent the sensor from vibrating,
And a holder mounting portion connected to the holder and elastically supporting the holder when the sensor contacts the sensing object,
Wherein the holder-
A first horizontal member capable of vertical movement,
A second horizontal member disposed parallel to the first horizontal member and having one side coupled to the holder,
And an elastic member interposed between the first horizontal member and the second horizontal member and elastically changing a distance between the first horizontal member and the second horizontal member,
/ RTI >
The elastic portion
A support rod having one end coupled to the first horizontal member so as to be slidable and the other end inserted and fixed to the second horizontal member,
A spring inserted between the first horizontal member and the second horizontal member,
A support member provided at one end of the support bar that has passed through the first horizontal member and restricting a sliding distance of the support bar,
The sensor holding device comprising: delete delete delete delete The method of claim 1,
Wherein the holder-
And a cylinder for vertically moving the first horizontal member,
Further comprising a base portion connected to the cylinder and movable in the lateral direction,
And the sensor is located at an upper portion or a lower portion of the sensing subject by the movement of the base portion. The method of claim 6,
Wherein the holder-
And a guide portion connected to the first horizontal member and guiding the operation of the cylinder.

Images