KR101509587B1 - Sensor assembly - Google Patents

Abstract

The present invention relates to a sensor assembly comprising: a main body; a supporting protrusion which protrudes from on one side of the main body; and a combining portion which is combined with the upper portion of the main body to adjust the width. The present invention can install the sensor assembly in a direction perpendicular to a sensor groove, which is formed in an object to be assembled, by having a composition which adjusts the width by transferring the combining portion in the opposite direction where the supporting protrusion is formed while the main body is inserted in the direction perpendicular to the sensor groove of the object.

Description

[0001] SENSOR ASSEMBLY [0002]

The present invention relates to a sensor assembly, and more particularly, to a sensor assembly for attaching and detaching a sensor to an object in a direction perpendicular to the sensor groove.

In general, a pneumatic actuator such as a pneumatic cylinder or a gripper is provided with a detection sensor for detecting the movement (position).

The sensing sensor is mainly used as a magnetic sensor for sensing a magnetic force of a magnet built in a cylinder and a proximity sensor for sensing an electric current by sending an induction current to a metallic object. In addition, a contact limit sensor or the like is also used

The magnetic sensor can be broadly classified into a contact type having a mechanical contact and a contactless type having an electronic contact, and two kinds of products can be easily manufactured and changed in form, so that a company that manufactures a pneumatic actuator has a unique shape and structure Lt; / RTI >

Such a magnetic sensor (hereinafter referred to as a " sensor assembly " including a contact point and a contactless magnetic sensor, a proximity sensor, and a contact type limit sensor) is becoming smaller and smaller, and a sensor assembly is called a pneumatic actuator such as a pneumatic cylinder, The object to be assembled ") is fixed by using only small screws without using a separate fixing part.

FIG. 1 is a perspective view illustrating a method of mounting a sensor assembly according to the related art on an assembly object, and FIG. 2 is a plan view showing a state in which the sensor assembly shown in FIG. 1 is mounted on an assembly object.

1 and 2, a sensor groove 12 having a substantially elliptical cross section is formed in the body 11 of the assembly object 10 and a sensor assembly 20 is mounted on the sensor groove 12, Is inserted and fixed.

To this end, the sensor groove 12 is provided with a neck portion 13 which is communicated with the outside of the body 11 and narrowly formed to prevent the sensor assembly 20 from being separated.

The sensor assembly 20 includes a main body 21 formed in a substantially rectangular parallelepiped shape, a fixing piece 22 protruded outward at the lower end of the main body 21 and having a tab 23 formed on one side thereof, (Not shown) and a wire 24 connected to the sensing element.

The sensor assembly 20 according to the related art is assembled to the body 11 by fastening the small screw 25 through the tab 23 processed in the fixing piece 22 in the state of being inserted into the sensor groove 12, Respectively.

The sensor assembly 20 according to the prior art is inserted or removed along the lengthwise direction of the sensor groove 12 through the entrance of the sensor groove 12.

2, the grip 11 and the gripper 14 are coupled to the upper and lower ends of the body 11, respectively.

As a result, both sides of the sensor groove 12 are clogged by the gripper 14 and the gripper attaching plate 15.

Therefore, in order to replace the sensor assembly 20 according to the prior art, the operation of removing the gripper 14 or the gripper attaching plate 15 must be performed beforehand.

In order to solve such a problem, the applicant of the present invention has disclosed a sensor assembly that can detachably attach a sensor assembly to an object in a direction perpendicular to the sensor groove, and has been patented.

Patent Document 1 discloses a fixing member having a through hole formed at one side of a main body, a connecting hole inserted into the through hole, a bracket coupled to a lower portion of the connecting hole, a bracket having a supporting protrusion formed on an outer circumferential surface thereof, Discloses a sensor assembly including a fastening means and capable of detachably attaching the sensor assembly in a direction perpendicular to the sensor groove.

Korean Patent Registration No. 10-1266493 (issued on May 24, 2013)

However, in the sensor assembly according to Patent Document 1, the outer surface of the supporting jaw formed on the outer circumferential surface of the bracket may be abraded with the inner wall of the sensor groove during the process of fixing the sensor assembly to the body or separating from the body by rotating the fastening means and the bracket .

As described above, when the outer surface of the support jaw is worn, the outer diameter of the support jaw of the bracket becomes smaller than the width of the sensor groove, thereby deteriorating the bonding force between the sensor assembly and the body.

In particular, there has been a problem that the output value of the sensor becomes inaccurate while the sensor assembly flows due to external vibration or shock.

Further, when severe vibration or impact is applied from the outside, the sensor assembly is detached from the body.

In recent years, there has been proposed a method of forming support ribs on both sides of the brackets and increasing the fixing force of the sensor assembly by forming the upper surfaces of the support ribs to be inclined in a helical shape. However, There is a problem that the fixed state is easily released by external vibration or external force according to line contact.

In addition, when the sensor assembly is fixed, a shear force due to twisting of the support jaw is generated, and the bracket or sensor groove is damaged.

An object of the present invention is to provide a sensor assembly detachable in a direction perpendicular to a sensor groove formed in an object to be assembled.

It is another object of the present invention to provide a sensor assembly capable of firmly holding a state attached to an object to be assembled.

It is still another object of the present invention to provide a sensor assembly that can easily replace a sensor assembly mounted on an object to be assembled.

In order to achieve the above object, a sensor assembly according to the present invention includes a main body, a support protrusion protruding from one side of the main body, and a coupling portion that is adjustably coupled to the upper portion of the main body, And the width of the engaging portion is adjusted by moving the engaging portion in a direction opposite to the direction in which the supporting jaw is formed in a state where the engaging portion is inserted in a direction perpendicular to the sensor groove of the object.

The sensor assembly according to the present invention further includes a bracket coupled to a lower portion of the main body and coupled with the engagement portion by a fastening bolt, wherein the main body and the support jaw have a width corresponding to the width of the sensor groove formed in the assembly object Is formed.

The coupling portion includes a horizontal plate and a pair of side walls extending downward on both sides of the horizontal plate. A mounting portion for mounting the coupling portion is provided on an upper portion of the body, and the coupling portion and the mounting portion are inclined Is contacted.

Wherein the mounting portion is formed with a pair of engagement spaces in which the pair of side walls are coupled, a first inclined surface inclined in one direction is formed on a bottom surface of the mounting portion forming the pair of engagement spaces, A second inclined surface corresponding to the first inclined surface is formed.

The horizontal plate is formed with an elongated hole for the fastening bolt to be inserted therethrough, and the fastening bolt is tapered so as to be narrowed toward the one side.

As described above, according to the sensor assembly of the present invention, it is possible to mount the sensor in the direction perpendicular to the sensor groove formed on the object to be assembled by adjusting the width by moving the engagement portion in the lateral direction.

According to the present invention, the sensor assembly and the main body can be assembled with the sensor assembly by increasing the width-direction coupling force between the sensor assembly and the main body, It is possible to obtain an effect that it can be firmly fixed to the base plate.

Thus, according to the present invention, it is possible to maintain the fixed state of the sensor assembly even when vibration or impact is applied from the outside, thereby improving the accuracy of the measured value.

Further, according to the present invention, the sensor assembly can be easily replaced, thereby improving the workability in maintenance.

According to the present invention, it is possible to securely fix not only sensor grooves having a cross section in the form of a sensor groove but also sensor grooves formed in an L shape or a square shape.

1 is a perspective view illustrating a method of mounting a sensor assembly according to the related art on an assembly object,
FIG. 2 is a plan view showing a state in which the sensor assembly shown in FIG. 1 is mounted on an assembly object,
3 is a perspective view of a sensor assembly and an assembly object according to a preferred embodiment of the present invention,
Figure 4 is an exploded perspective view of the sensor assembly shown in Figure 3,
5 is a cross-sectional view taken along the line A-A 'shown in FIG. 3,
FIG. 6 is an exemplary view showing a state in which the engaging portion shown in FIG. 5 is moved in the lateral direction,
Figure 7 is a partial enlarged plan view of the sensor assembly shown in Figure 3;
8-10 are operational state diagrams illustrating a process of mounting a sensor assembly to an assembly object according to a preferred embodiment of the present invention.

Hereinafter, a sensor assembly according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 3 is a perspective view of a sensor assembly and an assembly object according to a preferred embodiment of the present invention, and FIG. 4 is an exploded perspective view of the sensor assembly shown in FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Before describing the configuration of a sensor assembly according to a preferred embodiment of the present invention, the configuration of an object to be assembled will be briefly described.

The assembly object 10 may be provided with a pneumatic actuator such as a pneumatic cylinder or a gripper.

In this embodiment, the object 10 to be assembled will be described with reference to the configuration of the object 10 to which the sensor assembly according to the prior art shown in Figs. 1 and 2 is coupled.

The body 11 of the assembly object 10 is formed in a substantially hexahedron shape as shown in Fig. 3, and a sensor 11 for sensing the operation or position of the actuator, The sensor groove 12 into which the assembly is inserted is formed.

The sensor groove 12 may have a substantially elliptical cross section and may extend along the upper surface of the body 11.

That is, at the upper portion of the sensor groove 12, a neck portion 13 narrower than the lower portion is provided to prevent the sensor assembly from being separated.

The upper end of the body 11 constructed as described above is mounted on the gripper 14 and the gripper attaching plate 15 can be coupled to the lower end of the body 11 (see FIG. 2).

3 and 4, the sensor assembly 30 according to the preferred embodiment of the present invention includes a body 40, a support protrusion 41 protruding from one side of the lower end of the body 40, And a coupling portion 50 coupled to the upper portion of one side thereof so as to be adjustable in width.

The sensor assembly 30 according to the preferred embodiment of the present invention further includes a bracket 60 coupled to a lower portion of one side of the main body 40 and fastened to the engagement portion 40 by a fastening bolt 61 can do.

The main body 40 and the support jaw 41 may be defined to correspond to the width of the sensor groove 12 so as to be inserted in a direction perpendicular to the sensor groove 12 formed in the body 11 of the assembly object 10. [

The main body 40 may have a substantially rectangular parallelepiped shape, and the left and right side surfaces of the main body 40 may be formed as vertical surfaces.

The support jaw 41 functions to prevent the sensor assembly 30 from being separated from the sensor groove 12 when it is coupled to the sensor groove 12. [

For this, the support step 41 may be formed to protrude outward on one side of the lower end of the main body 40 so as to be inserted into the lower space at one side of the sensor groove 12.

Accordingly, the end surfaces of the main body 40 and the support step 41 can be formed in an approximately L shape.

A sensing element (not shown) such as a magnetic sensor or a proximity sensor is installed in the body 40. An LED lamp 42, which is turned on in response to a sensing signal of the sensing element, is electrically connected to the sensing element Can be connected and installed.

3, an extraction hole for extracting a cable 43 connected to the sensing element may be formed on the upper side of the main body 40, that is, the upper side of the rear side as viewed in FIG.

A mounting portion 44 to which the engaging portion 50 is mounted may be provided on the upper portion of the other side of the main body 40, that is, on the upper side in FIG.

For example, FIG. 5 is a cross-sectional view taken along line A-A 'of FIG. 3, and FIG. 6 is an exemplary view showing a state where a coupling portion shown in FIG. 5 is moved in a lateral direction.

4 and 5, the mounting portion 44 is formed with a pair of engaging spaces 45 to which a pair of side walls 52 provided at the engaging portions 50 to be described below are coupled, A through hole 46 through which the fastening bolt 61 is inserted may be formed between the pair of engagement spaces 45. [

A pair of first inclined faces 47 inclined toward the right lower side can be formed on one side, for example, as viewed in FIG. 5, on the bottom surface of the mounting portion 44 constituting the pair of engaging spaces 45.

Here, it is preferable that the pair of first inclined surfaces 47 are formed to be inclined toward the direction opposite to the direction in which the support step 41 is formed.

A bracket insertion space 48 may be provided in the lower portion of the mounting portion 44 so that the bracket 60 is inserted therein.

The bracket 60 is formed in a substantially cylindrical shape and a head portion formed on the outer peripheral surface of the lower end portion of the bracket 60 in a larger diameter than the central portion can be provided.

A screw thread may be formed on the inner circumferential surface of the bracket 60 to fasten the fastening bolt 61.

To this end, the inner circumferential surface of the mounting portion 44 where the bracket insertion space 48 is formed may have a tapered portion corresponding to the shape of the head of the bracket 60.

The engaging portion 50 may include a pair of side walls 52 extending downwardly from the front and rear sides of the horizontal plate 51 and the horizontal plate 51 so as to have a substantially ∩ shaped cross section.

The horizontal plate 51 is formed in a substantially rectangular shape, and a coupling hole 53 through which the fastening bolt 61 is inserted is formed.

The coupling hole 53 may be formed as a long hole so that the coupling portion 50 can move in the width direction of the sensor groove 12 in the process of coupling the sensor assembly 30 to the assembly object 10.

The pair of side walls 52 are inserted into a pair of engaging spaces 45 formed in the mounting portion 44 and are inclined at a lower end of each side wall 52 so as to correspond to the pair of first inclined surfaces 47 A second inclined surface 54 may be formed.

As described above, since the pair of first inclined surfaces 47 are formed on the mounting portion 44 and the second inclined surfaces 54 are formed on the pair of side walls 52 provided on the engaging portion 50, As shown in Fig. 6, the connecting portion 50 can move toward one side, for example, the right lower side when engaged with the mounting portion 44. [

That is, according to the present invention, the width (d <D) of the sensor assembly can be adjusted by moving the engaging part in one direction in a state where the main body and the engaging part are engaged with each other in a surface contact manner (see FIGS. 5 and 6).

Accordingly, the sensor assembly can be stably fixed to the sensor groove by expanding the width of the sensor assembly after inserting the sensor assembly in a direction perpendicular to the sensor groove formed in the assembly object.

7 is a partially enlarged plan view of the sensor assembly shown in Fig.

The coupling hole 53 may be tapered so as to be narrowed from one end to the other end, that is, from the right end to the left end as viewed in FIG.

That is, the first and second inclined surfaces 47 and 54 are formed to be inclined downward to the right side, and the engaging holes 53 are tapered so as to be narrowed toward the left side, The coupling force between the main body 40 and the engaging portion 50 is increased.

Of course, the coupling hole 53 may be tapered so as to be narrowed from the left end to the right end.

As described above, the present invention can improve the width-direction coupling force between the sensor assembly and the main body by moving the coupling portion in the lateral direction to expand the width of the sensor assembly.

In addition, according to the present invention, the sensor assembly can be firmly fixed to an object to be assembled as the longitudinal coupling force by the support jaw and the coupling portion and the tip of the fastening bolt come into close contact with the bottom surface of the sensor groove of the object to be assembled.

Next, referring to FIGS. 8 to 10, a method of mounting and dismounting the sensor assembly according to the preferred embodiment of the present invention to an assembly object will be described in detail.

8 to 10 are operation state diagrams showing a process of mounting a sensor assembly according to a preferred embodiment of the present invention to an assembly object.

The bracket 60 is disposed below the mounting portion 44 of the main body 40 and the engaging portion 50 is disposed on the upper portion of the mounting portion 44. The fastening bolt 61 is fastened to the sensor assembly 30, .

At this time, the pair of side walls 52 provided at the coupling portion 50 are inserted and coupled to the pair of coupling spaces 45 formed in the mounting portion 44, and the pair of side walls 52, (54) are in surface contact with a pair of second inclined surfaces (54) formed on the mounting portion (44).

Here, the main body 40 is in a state in which the cable 43 is drawn out to the outside through the drawing hole of the main body 40 in a state where the sensing element and the LED lamp 42 are installed.

At this time, in order to minimize the width of the sensor assembly 30, the engaging portion 50 and the right side surface of the mounting portion 44 are joined so as to be flush with each other.

8, the assembled sensor assembly is disposed above the sensor groove 12 formed in the body 11 of the assembly object 10 and is lowered along the direction perpendicular to the sensor groove 12 Is inserted into the sensor groove (12).

The sensor assembly 30 may be inserted through any one of the two side openings of the sensor groove 12. In a state where the gripper 14 and the gripper attaching plate 15 are coupled to the upper and lower ends of the body 11, The sensor assembly 30 can be easily inserted in the direction perpendicular to the groove 12.

9, the sensor assembly 30 is inserted into the sensor groove 12 and seated on the bottom surface of the sensor groove 12. As shown in Fig.

10, when the fastening bolt 61 is tightened, the engaging portion 50 is moved in the transverse direction and the longitudinal direction toward the lower right along the first inclined surface 47 of the mounting portion 44 Move.

At this time, the main body 40 moves in a direction opposite to the moving direction of the engaging portion 50, that is, the left direction.

Therefore, the support step 41 formed at the left end of the main body 40 is inserted into the lower left space of the sensor groove 12 and engaged.

As described above, according to the present invention, the width of the sensor assembly can be extended by tightening the fastening bolt, thereby stably fixing the sensor assembly in the sensor groove.

When the sensor assembly 30 is to be replaced, when the engaging portion 50 is moved in one direction, for example, leftward, so that the width of the sensor assembly 30 is minimized in a loosened state of the fastening bolt 61, The coupling force between the body 30 and the body 11 is removed.

Therefore, the sensor assembly 30 can be lifted upward and separated from the sensor groove 12. [

According to the above-described process, the sensor assembly is inserted in a direction perpendicular to the sensor groove, and the engaging portion is laterally moved in a state where the main body and the engaging portion are in surface contact with each other to improve the width- .

Although the invention made by the present inventors has been described concretely with reference to the above embodiments, the present invention is not limited to the above embodiments, and it goes without saying that various changes can be made without departing from the gist of the present invention.

In the above-described embodiment, the sensor groove is formed in the shape of 'ㅗ', but the present invention is not limited thereto.

That is, according to the present invention, the cross section of the main body and the support jaw is formed in the L shape, so that the shape of the cross section 'L' can be changed to be mounted on the sensor groove.

The present invention can be modified to increase the height of the support jaws or remove the support jaws to be mounted on a square sensor groove when the sensor groove is applied to a square sensor groove.

The present invention is applied to a sensor assembly technique in which a sensor assembly is inserted in a direction perpendicular to a sensor groove, and a joint portion is laterally moved in a state in which a body and a coupling portion are in surface contact with each other to improve a widthwise coupling force between the sensor assembly and the body.

10: Assembly object 11: Body
12: sensor groove 13: neck
14: Gripper 15: Gripper mounting plate
30: Sensor assembly 40:
41: Support chin 42: LED lamp
43: cable 44:
45: coupling space 46: through hole
47: first inclined surface 48: bracket insertion space
50: engaging portion 51: horizontal plate
52: side wall 53: engaging hole
54: second inclined surface 60: bracket
61: fastening bolt

Claims (5)

A main body inserted in a direction perpendicular to the sensor groove of the object to be assembled,
A supporting jaw protruding from one side of the main body;
And a coupling portion coupled to the upper portion of the main body so as to be adjustable in width,
Wherein a mounting portion for mounting the coupling portion is provided on an upper portion of the main body,
Wherein the engaging portion is slantedly in contact with the mounting portion to move downward on the opposite side where the supporting jaw is formed to adjust the overall width of the body and the engaging portion. The method according to claim 1,
And a bracket coupled to a lower portion of the main body and coupled to the coupling portion by a fastening bolt,
Wherein the main body and the supporting jaw are formed to have a width corresponding to the width of the sensor groove formed in the object to be assembled. 3. The method of claim 2,
The coupling portion includes a horizontal plate
And a pair of side walls extending downward on both sides of the horizontal plate. The method of claim 3,
Wherein the mounting portion is formed with a pair of engagement spaces in which the pair of side walls are coupled,
A first inclined surface inclined in one direction is formed on a bottom surface of the mounting portion forming the pair of engagement spaces,
And a second inclined surface corresponding to the first inclined surface is formed at the lower end of the pair of side walls. The method according to claim 3 or 4,
Wherein the horizontal plate is formed with a long hole-shaped coupling hole through which the fastening bolt is inserted,
Wherein the coupling hole is formed to be tapered so as to be narrowed toward one side.

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