JP4719063B2 - Fixture and adjustment method of fixture - Google Patents

Description

  The present invention relates to a fixture for an apparatus that requires axis adjustment, such as an optical axis of a photoelectric sensor, and an adjustment method thereof.

2. Description of the Related Art Conventionally, in a device that requires axis adjustment, for example, a photoelectric sensor including a light projecting unit and a light receiving unit, it may be desired to perform optical axis adjustment after the main body case is attached to a predetermined attachment location. Therefore, Patent Literature 1 discloses a fixture for pivotally attaching the main body case to the attachment location. This fixture is formed by connecting first and second movable parts having a U-shape as a whole so that the alignment directions of both linear parts are orthogonal to each other. Then, the first movable portion and the second movable portion are elastically changed so that the angle formed by the two linear portions is changed by adjusting screws screwed into the respective movable portions, thereby changing the optical axis direction of the photoelectric sensor in the vertical and horizontal directions. It can be changed in two orthogonal directions. After completing the optical axis adjustment, tighten the nut screwed to each adjustment screw to the head side of the screw to fix the straight part between the adjustment screw head and the nut, and the adjustment screw is inadvertent The optical axis direction adjusted by turning or external force is prevented from changing in the left-right direction.
JP 2005-302692 A

  By the way, the above fixture must be fixed so that the adjusting screw does not turn when the nut for fixing the optical axis is tightened. The work is complicated and the optical axis may fluctuate during fixing. In addition, since the fixture adjusts the angle of the optical axis using bending, the overall thickness becomes thin, and if a large force is applied to the adjustment screw during the optical axis adjustment, the force As a result, the movable part and the linear part of the other axis are bent and the optical axis fluctuates, making it difficult to adjust the optical axis.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a fixture that can easily adjust and fix a shaft and a method for adjusting the fixture.

In order to achieve the above object, the invention described in claim 1 is an attachment for attaching the device to a predetermined attachment location so that the shaft can be adjusted, and includes a first member and a second member. The first member is attached to the predetermined attachment location, the device is attached to the second member, the first member includes a first connecting portion for connecting the second member, and the second member A first fixing portion for rotating the angle of the member in a first direction which is a direction parallel to the attachment location; and a second direction in which the angle of the second member is perpendicular to the attachment location . A second fixing portion for rotating in the direction of 2, and the second member is rotated in the first direction and the second direction with respect to the first connecting portion by a connecting member. It is connected so that it can move, and it can be controlled to rotate and not rotate according to the operation of the connecting member. A second connecting portion, a first adjusting portion that is moved toward and away from the first fixed portion, and a second adjusting portion that is moved toward and away from the second fixed portion. And at least one of the first connecting part and the second connecting part is formed in a hemispherical shape.

  According to this invention, since the fixture is controlled so that the first connecting portion and the second connecting portion that connect the first member and the second member are rotatable and non-rotatable by the connecting member, the connecting member By this operation, the first member and the second member can be easily fixed so that they cannot move relative to each other. In addition, since the relative angle between the first member and the second member can be adjusted simply by moving the first adjustment unit and the second adjustment unit provided on the second member, the second member is attached to the first member or the second member. This makes it easy to adjust the axis of the equipment.

  According to a second aspect of the present invention, in the fixture according to the first aspect, one of the first connecting portion and the second connecting portion is formed in a convex shape and the other is formed in a concave shape, The connecting part and the second connecting part are formed in a hemispherical shape. According to this invention, it is possible to easily enable relative rotation of the first member and the second member with respect to the first direction and the second direction.

  According to a third aspect of the present invention, in the fixture according to the first or second aspect, the connection member is inserted into an insertion hole formed in each of the first connection portion and the second connection portion. And a nut into which the connecting screw is screwed, and biasing means for biasing one of the first connecting portion and the second connecting portion toward the other.

  According to this invention, the first member and the second member are controlled to be relatively rotatable by loosening the connecting screw, and the first member and the second member are pressed against each other by the biasing means. The shaft is stably adjusted without wobbling during rotation.

  According to a fourth aspect of the present invention, in the fixture according to the third aspect of the present invention, the first member is formed with an accommodating portion that accommodates one of the nut and the head of the coupling screw. The nut or head housed in the housing portion has a plurality of convex portions extending radially outward from the center of the connecting screw, and the inner peripheral surface of the housing portion engages with the convex portion in the circumferential direction. It is formed as follows.

  According to the present invention, when the connecting screw is rotated, the nut or the head of the connecting screw is engaged with the inner peripheral surface of the housing portion, and the rotation is restricted. Therefore, only the connecting screw or the nut is operated. Thus, it is possible to control the relative rotation and non-rotation of the first member and the second member.

  According to a fifth aspect of the present invention, in the fixture according to the third or fourth aspect, the first member is formed with a housing portion that houses one of the nut and the head of the connecting screw. The bottom surface of the housing portion is formed in a hemispherical shape, and one of the nut and the head of the connecting screw is formed in an arc shape according to the bottom surface.

  According to the present invention, the nut or the head formed in an arc shape is in surface contact with the bottom surface of the housing portion. Therefore, when the rotation is impossible, the first member and the second member are caused by the frictional force generated on the contact surface. When the member is firmly fixed and can rotate, the biasing force of the biasing means is applied to the entire contact surface without concentrating, so the relative movement between the first member and the second member is stable. Can be done.

  According to a sixth aspect of the present invention, in the fixture according to any one of the first to fifth aspects, the first adjusting portion and the first fixing portion are formed with a through hole on one side. A screw hole is formed on the other side and connected by a first shaft adjustment screw member, and the first adjustment portion and the first fixing portion are urged in the separation direction by the first urging means, and the second The adjustment portion and the second fixing portion are formed with a through hole on one side and a screw hole on the other side, and are connected by a second shaft adjusting screw member, and are also adjusted by the second biasing means. And the second fixed portion are urged in the separation direction.

  According to this invention, since the urging of the first adjustment unit and the second adjustment unit can be performed by the first urging means and the second urging means, the first member and the second member have elasticity. There is no need. For this reason, it is possible to increase the thickness of the first member and the second member, and it is possible to prevent the movement of the shaft of the device due to vibration or operation force.

A seventh aspect of the present invention is the fixture according to any one of the first to sixth aspects, wherein the first member has a first attachment portion for attachment to the attachment location, and the attachment. And a second mounting portion that is formed so as to protrude from the first mounting portion in a direction orthogonal to the first mounting portion. The first mounting portion has a second mounting portion on a side opposite to the mounting surface. The first connecting portion, the first fixing portion, and the second fixing portion are formed to protrude in the same direction as the protruding direction, and the two connecting portions, the first adjusting portion, and the second adjusting portion provided in the second member. Are formed so as to correspond to the first connecting portion, the first fixing portion, and the second fixing portion, respectively . According to this invention, it is excellent in usability because the fixture can be attached to the predetermined place at different angles.

The invention according to claim 8 is an attachment adjustment method for adjusting an axis of the device with respect to an attachment for attaching the device to a predetermined attachment location. The first member is attached to the predetermined attachment location, the device is attached to the second member, and the first member is connected to the second member. a first connecting portion of the the first of the first fixed portion for rotating the direction of the angle of the second member is a direction parallel to said mounting portion, the mounting angle of the second member A second fixing portion for rotating in a second direction that is perpendicular to the location, and the second member is connected to the first connecting portion by a connecting member. And the second direction so as to be rotatable, and depending on the operation of the connecting member A second connecting portion controlled to be movable and non-rotatable, a first adjusting portion moved in a contacting / separating direction with respect to the first fixed portion, and a contacting / separating direction with respect to the second fixed portion. A second adjusting portion to be moved, and at least one of the first connecting portion and the second connecting portion is formed in a hemispherical shape, and the second connecting portion is connected to the connecting portion. In a state controlled to be rotatable by a member, a first angle is adjusted by moving at least one of the first adjustment unit and the second adjustment unit to adjust the relative angle between the first member and the second member. And a second step of fixing the second connecting portion so as not to be rotatable by the connecting member after the adjustment in the first step.

  According to this invention, in the first step, the relative angle between the first member and the second member can be adjusted simply by moving the first adjustment unit and the second adjustment unit provided on the second member. The axis of the device attached to the first member or the second member can be easily adjusted. Since the first connecting portion and the second connecting portion that connect the first member and the second member are controlled to be rotatable and non-rotatable by the connecting member, the mounting tool is controlled in the second step. By the operation, the first member and the second member can be easily fixed so that they cannot move relative to each other.

  As described above, according to the present invention, it is possible to provide a fixture that can easily adjust and fix the shaft and a method for adjusting the fixture.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of the invention will be described with reference to the drawings.
As shown in FIG. 1, the fixture 10 of the present embodiment has a device 10 that requires axis adjustment, for example, a photoelectric sensor body case 11 provided with a light projecting unit and a light receiving unit at a predetermined mounting location W1 indicated by a broken line. The main body case 11 can be tilted in two orthogonal directions (horizontal direction (X direction) and vertical direction (Z direction) in the figure) in the grounded state to adjust the optical axes of the light projecting unit and the light receiving unit. Is.

  The fixture 10 is mainly composed of a bracket base 20 as a first member and a bracket arm 30 as a second member. The bracket base 20 and the bracket arm 30 are connected by a connecting screw 40 and a nut 41 (see FIG. 4) as connecting members. The bracket base 20 is fixed to the attachment location W1, and the body case 11 is attached to the bracket arm 30.

Next, the configuration of the bracket base 20 will be described.
The bracket base 20 includes a base member 21 formed in an L shape when viewed from the front. As shown in FIG. 3A, the base member 21 includes a first attachment portion 22 formed in a substantially rectangular plate shape, and an orthogonal direction from the first attachment portion 22 as shown in FIG. It is comprised from the 2nd attaching part 23 by which the protrusion was formed. In the present embodiment, the second mounting portion 23 is formed so as to protrude from both front and rear ends (Y-axis direction both ends in the drawing) of the first mounting portion 22.

  The first mounting portion 22 and the second mounting portion 23 are formed with mounting holes 22a and 23a penetrating in the respective plate thickness directions. By using the first mounting portion 22 or the second mounting portion 23, a bracket is formed. The base 20 is attached to the attachment location. More specifically, as shown in FIG. 1, the mounting surface 23b of the second mounting portion 23 is brought into contact with the mounting location W1 and a screw (see FIG. 2B) inserted through the mounting hole 23a (see FIG. 2B). The main body case 11 is attached to the vertical position. Further, the main body is mounted by a screw (not shown) inserted into the mounting hole 22a (see FIG. 2A) of the mounting portion 22 by bringing the mounting surface 22b of the first mounting portion into contact with the mounting location W2 indicated by the alternate long and short dash line. Case 11 is attached in a lateral position.

  In the base member 21, a connecting portion (hereinafter referred to as a first connecting portion) 24 is formed on the side opposite to the mounting surface of the first mounting portion 22. That is, with respect to the first mounting portion 22, the protruding direction of the second mounting portion 23 matches the protruding direction of the first connecting portion 24. As shown in FIG. 5, the first connecting portion 24 is formed in a columnar shape, and the tip thereof is recessed to form a hemispherical first connecting surface 24 a. The first connecting portion 24 is formed with a first connecting hole 24b penetrating along the axial center. Further, as shown in FIG. 4, the first connecting portion 24 has a housing portion 24 c recessed from the mounting surface 22 b side of the first mounting portion 22. As shown in FIG. 3A, the accommodating portion 24c is formed in a cross shape. Further, as shown in FIG. 4, the inner bottom surface 24d of the accommodating portion 24c is formed in a hemispherical shape with a central portion protruding corresponding to the first connecting surface 24a.

  As shown in FIG. 5, a first fixing portion 25 and a second fixing portion 26 are formed to protrude on the side opposite to the mounting surface of the first mounting portion 22. Screw holes 25a and 26a are formed in the first fixing part 25 and the second fixing part 26 along the adjustment direction of the optical axis. As shown in FIG. 4, a screw hole 25 a is formed in the first fixing portion 25 along the vertical direction (X-axis direction) in the drawing, and the second fixing portion 26 is in the drawing front-back direction (Z-axis direction). A screw hole 26a is formed along.

Next, the configuration of the bracket arm 30 will be described.
As shown in FIG. 4, the bracket arm 30 includes a connecting portion (hereinafter referred to as a second connecting portion) 31 formed in a hemispherical shape. A connecting surface (hereinafter referred to as a second connecting surface) 31 a formed in a hemispherical shape of the connecting portion 31 is formed so as to be in surface contact with the first connecting surface 24 a of the first connecting portion 24. Further, the second connecting portion 31 is formed with a second connecting hole 31b formed coaxially with the first connecting hole 24b of the first connecting portion 24. The inner diameter of the second connection hole 31b is formed so that the connection screw 40 can be inserted, and the inner diameter of the first connection hole 24b is larger than the inner diameter of the second connection hole 31b and moves in the optical axis adjustment. It is formed in a size that does not hinder the movement of 40.

Here, the connection screw 40 and the nut 41 will be described.
As shown in FIG. 4, a spring washer 42 and a flat washer 43 as biasing members are interposed between the connecting screw 40 and the bracket arm 30. The spring washer 42 urges the connecting screw 40 in the anti-screwing direction. The flat washer 43 prevents the movement of the bracket arm 30 from being restricted by the spring washer 42 when adjusting the optical axis, and prevents the bracket arm 30 from moving by tightening the connecting screw 40 when fixed. . When the flat washer 43 is not used, the end portion of the spring washer 42 is engaged with the bracket arm 30. Due to this engagement, the bracket arm 30 is difficult to move when adjusting the optical axis, and is not fixed. This is because the bracket arm 30 moves.

  As shown in FIG. 3A, the nut 41 is formed in a cross shape. The nut 41 is formed smaller than the shape of the accommodating portion 24c. This does not hinder the movement of the connecting screw 40 that moves in the optical axis adjustment. Further, in the nut 41, the length L1 from the center to the tip is set larger than the length L2 from the center to the tip in the axial direction of the convex portion 24e protruding toward the axial center of the housing portion 24c. . Therefore, when fixing the bracket arm 30 by screwing the connecting screw 40 screwed into the nut 41, or when not fixing the bracket arm 30 so that the bracket arm 30 can be rotated by loosening the screw, the nut 41 is accommodated in the accommodating portion 24c. The nut 41 is restricted from rotating together with the connecting screw 40. Therefore, there is no need to fix the nut 41 at the time of fixing or non-fixing, and the fixing and non-fixing can be performed only by operating the connecting screw 40.

  Moreover, as shown in FIG. 4, it is curvedly formed along the bottom surface 24d of the accommodating part 24c. Therefore, the nut 41 is in surface contact with the bottom surface 24d. As described above, the first connecting surface 24a is in surface contact with the second connecting surface 31a. For this reason, at the time of fixing, a frictional force corresponding to the contact area is generated, and the movement of the bracket arm 30 is restricted. Further, when not fixed, the first connecting portion 24 is sandwiched between the second connecting portion 31 and the nut 41, and the urging force of the spring washer 42 is applied to the entire contact surface, so that a flat nut is used. Since the urging force is not applied in a concentrated manner, the bracket arm 30 can be easily moved.

  As shown in FIG. 2A, the connecting portion 31 is formed with a mounting arm 32 protruding. The mounting arm 32 is formed in a plate shape extending along a predetermined plane (YZ plane in the present embodiment), and a mounting hole 32a is formed through the plate thickness direction (X-axis direction). An orthogonal surface is set as the mounting surface 32b. In the present embodiment, the mounting arm 32 is formed with two mounting holes 32a arranged along the Z-axis direction according to the mounting direction of the main body case 11 of FIG. 1, and the interval between the mounting holes 32a is as shown in FIG. It corresponds with the space | interval (pitch) of the screw hole for attachment (not shown) formed in the main body case 11 shown in FIG. A screw S1 shown in FIG. 1 is inserted into the mounting hole 32a, and the main body case 11 is screwed to the mounting surface 32b by the screw S1.

  As shown in FIG. 2A, the connection portion 31 is formed with a first adjustment portion 33 that protrudes along a direction substantially orthogonal to the mounting arm 32. The first adjustment portion 33 is formed in a plate shape that is the same plane as the mounting arm 32 and extends along a plane orthogonal to the adjustment direction (X-axis direction) of the optical axis. As shown in FIG. A screw insertion hole 33a is formed therethrough. The screw insertion hole 33a is formed as a long hole extending along the circumferential direction around the center of the second connection hole 31b or the tangential direction of the circumference.

  As shown in FIG. 2B, the first adjustment unit 33 is formed with a second adjustment unit 34 that protrudes along a substantially protruding direction of the first adjustment unit 33. The second adjustment unit 34 is formed in a plate shape that is a plane orthogonal to the first adjustment unit 33 and extends along a plane orthogonal to the adjustment direction (Z-axis) of the optical axis. A screw insertion hole 34a is formed penetrating along the direction. The screw insertion hole 34a is formed as a long hole extending in the circumferential direction around the center of the second connecting surface 31a or in the tangential direction of the circumference.

  As shown in FIG. 2A, a first adjustment screw 51 as a first shaft adjustment screw member is inserted into the screw insertion hole 33a of the first adjustment portion 33, and the first adjustment screw 51 is a first fixed screw. It is screwed into the screw hole 25a of the portion 25. Between the 1st adjustment part 33 and the 1st fixing | fixed part 25, the washer 52 in which the 1st adjustment screw 51 was penetrated, and the spring 53 as an urging | biasing member are interposed. The spring 53 is a compression coil spring and urges the first adjustment portion 33 in the separation direction with respect to the first fixing portion 25. The washer 52 facilitates relative movement of the first adjustment portion 33 with respect to the first adjustment screw 51 and the spring 53 during the optical axis adjustment.

  As shown in FIG. 3B, a second adjustment screw 61 as a second shaft adjustment screw member is inserted into the screw insertion hole 34 a of the second adjustment portion 34, and the second adjustment screw 61 is a second fixed screw. It is screwed into the screw hole 26a of the portion 26.

  Between the 2nd adjustment part 34 and the 2nd fixing | fixed part 26, the washer 62 in which the 2nd adjustment screw 61 was penetrated, and the spring 63 as an urging | biasing member are interposed. The spring 63 is a compression coil spring and urges the second adjustment portion 34 in the separation direction with respect to the second fixing portion 26. The washer 62 facilitates relative movement of the second adjustment unit 34 with respect to the second adjustment screw 61 and the spring 63 during the optical axis adjustment.

Next, an optical axis adjustment method will be described with reference to FIG.
First, the connecting screw 40 is loosened so that the bracket arm 30 is not fixed. At this time, the nut 41 shown in FIG. 3A is in contact with the inner peripheral surface of the housing portion 24c and its rotation is restricted, so that it is not necessary to fix the nut 41, and the operation from the connecting screw 40 side is not necessary. Only the bracket arm 30 can be unfixed.

  Next, the first adjustment screw 51 and the second adjustment screw 61 are operated to adjust the optical axis angle of the main body case 11. For example, the first adjustment screw 51 is rotated to move the first adjustment unit 33 to rotate the bracket arm 30 in the horizontal direction. At this time, since the first adjustment portion 33 is biased in the separation direction by the spring 53 (see FIG. 5), the first adjustment portion 33 moves according to the operation of the first adjustment screw 51, and the bracket arm 30 rotates. Thereby, the optical axis of the main body case 11 is rotated in the horizontal direction (arrow AH direction in the figure), and the horizontal axis is adjusted. Next, the second adjustment screw 61 is rotated to move the second adjustment portion 34, thereby rotating the bracket arm 30 in the vertical direction. At this time, since the second adjustment portion 34 is biased in the separation direction by the spring 63 (see FIG. 5), the second adjustment portion 34 moves according to the operation of the second adjustment screw 61, and the bracket arm 30 rotates. Thereby, the optical axis of the main body case 11 is rotated in the vertical direction (arrow AV direction in the figure) to perform vertical axis adjustment.

  When the axis adjustment is completed, the connecting screw 40 is tightened and the bracket arm 30 is fixed. At this time, the nut 41 shown in FIG. 3A is in contact with the inner peripheral surface of the housing portion 24c and its rotation is restricted, so that it is not necessary to fix the nut 41, and the operation from the connecting screw 40 side is not necessary. The bracket arm 30 can be fixed only with this.

As described above, according to the present embodiment, the following effects can be obtained.
(1) The fixture 10 includes a bracket base 20 and a bracket arm 30, and the bracket base 20 and the bracket arm 30 are connected to each other by a connection screw 40 and a nut 41 at a first connection portion 24 and a second connection portion 31 provided to each other. It is connected. Since the bracket arm 30 is controlled to be rotatable and non-rotatable by the operation of the connection member by the connection screw 40 and the nut 41, the relative movement between the bracket base 20 and the bracket arm 30 is disabled by the operation of the connection member. Can be easily fixed.

  (2) Since the relative angle of the bracket base 20 and the bracket arm 30 can be adjusted simply by moving the first adjustment portion 33 and the second adjustment portion 34 provided on the bracket arm 30, the bracket arm 30 is attached to the bracket arm 30. The optical axis of the main body case 11 can be easily adjusted.

  (3) Since the second connecting part 31 of the bracket arm 30 is formed in a hemispherical shape, the second connecting part 31 rotates in the circumferential direction along the second connecting surface 31a, and the connecting screw 40 rotates around the axis. Is possible. Therefore, rotation in the X-axis direction and rotation in the Z-axis direction are possible, and the angle adjustment of the bracket arm 30, that is, the optical axis adjustment of the main body case 11 can be performed.

  (4) Since the nut 41 is formed in a cross shape and the housing portion 24c for housing the nut 41 is formed in a cross shape, the convex portion of the nut 41 engages with the inner peripheral surface of the housing portion 24c in the circumferential direction. For this reason, the operation | work which hold | maintains so that the nut 41 may not rotate is unnecessary, and the bracket arm 30 can be controlled to be rotatable or non-rotatable by operating only the connecting screw 40.

  (5) The bottom surface 24d of the accommodating portion 24c is formed in a hemispherical shape so as not to hinder the rotation of the bracket arm 30, and the nut 41 is formed in an arc shape corresponding to the bottom surface 24d. Accordingly, since the nut 41 formed in an arc shape comes into surface contact with the bottom surface 24d of the housing portion 24c, the bracket base 20 and the bracket arm 30 are firmly fixed by the frictional force generated on the contact surface when the nut 41 cannot rotate. Since the biasing force of the spring washer 42 is applied to the entire contact surface without being concentrated when it can be rotated, the relative movement of the bracket base 20 and the bracket arm 30 can be performed stably. Can do.

  (6) The first adjustment unit 33 and the second adjustment unit 34 are urged toward the separation direction by the springs 53 and 63, respectively. Therefore, the bracket base 20 and the bracket arm 30 do not need to have elastic force. For this reason, the thickness of the bracket base 20 and the bracket arm 30 can be increased, and the bracket arm 30 is not moved by vibration or the operating force of the screw, thereby preventing the optical axis movement of the main body case 11. it can.

  (7) The fixture 10 of the present embodiment is composed of two parts, the bracket base 20 and the bracket arm 30, and the main body case 11 is attached to the bracket arm 30. Therefore, when a main body case having a different shape or mounting pitch is mounted at a predetermined mounting location, it is only necessary to change the bracket arm, which can be easily handled. For example, in FIG. 1, in a main body case having a wider mounting pitch than the main body case 11 of the above-described embodiment, a bracket arm whose mounting arm length is increased according to the mounting pitch is connected to the bracket base 20. Further, in the main body case having a thickness larger than that of the main body case 11 of the present embodiment, a bracket arm whose mounting arm is offset to the left side of the drawing is connected to the bracket base 20. That is, since the bracket base 20 can be used in common, the cost is reduced as compared with the case where the entire fixture is remade.

  In this embodiment, since the main body case 11 is attached to the attachment surface 32b of the flat mounting arm 32, in the case of the main body case having a thickness larger than that of the main body case 11 of this embodiment, the attachment state is set to the vertical position. Then, it can attach to a predetermined attachment location with the fixture 10 of this embodiment. Therefore, depending on the mounting state, it is possible to cope without changing the bracket arm 30.

In addition, you may implement the said embodiment in the following aspects.
In the above embodiment, the second connecting portion 31 is formed in a hemispherical shape (see FIG. 5), but the shape may be appropriately changed as long as the bracket arm 30 can be rotated in two orthogonal directions. As shown in FIG. 7, a bracket arm 70 having a connecting portion 71 formed in an arc shape extending along a predetermined axial direction may be embodied.

  Moreover, in the said embodiment, although the 1st connection surface 24a of the 1st connection part 24 was formed in hemispherical concave shape, you may form so that it may contact | abut partially with the 2nd connection surface 31a. Moreover, the 2nd connection part 31 should just be rotatable, and you may change the shape of a recessed part suitably.

In the above embodiment, the first connecting portion 24 is cylindrical, but the second connecting portion 31 is only required to be rotatable. For example, the first connecting portion 24 may be formed in a polygonal cylindrical shape such as a hexagon or an octagon. Good.
In contrast to the above embodiment, the first connecting portion 24 may be formed in a hemispherical convex shape, and the second connecting portion 31 may be formed in a hemispherical concave shape.

  In the above embodiment, the nut 41 is formed in a cross shape, that is, four convex portions are formed at equal angular intervals from the central portion into which the connecting screw 40 is screwed in toward the radially outer side. May be appropriately changed to 2, 3, 5 or more.

  In the above embodiment, the nut 41 is formed in a cross shape. However, the head of the connection screw 40 is formed in a cross shape, and the connection screw is inserted into the first connection hole 24b and the storage portion 24c. The bracket base 20 and the bracket arm 30 may be connected by being inserted through the second connection hole 31b and screwing a nut from the bracket arm 30 side. In this case, the nut can be appropriately changed to a cross shape, an arbitrary polygonal shape, or the like.

  In the above embodiment, the bracket base 20 is the first member and the bracket arm 30 is the second member. However, the bracket base 20 may be the second member and the bracket arm 30 may be the first member.

The front view of a photoelectric sensor and a fixture. (A) is a left side view of the fixture, and (b) is a bottom view of the fixture. (A) is a right view of a photoelectric sensor and a fixture, (b) is a top view of a fixture. AA line sectional view of Drawing 2 (a). The exploded perspective view of a fixture. The perspective view of a photoelectric sensor and a fixture. The perspective view of another bracket arm.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Mounting tool, 11 ... Main body case, 20 ... Bracket base, 21 ... Base member 22b, 23b, 32b ... Mounting surface, 24 ... 1st connection part, 24c ... Storage part, 24d ... Bottom face, 24e ... Projection part, 25 ... 1st fixing part, 26 ... 2nd fixing part, 30 ... Bracket arm, 31 ... 2nd connection part, 33 ... 1st adjustment part, 34 ... 2nd adjustment part, 40 ... Connection screw, 41 ... Nut, W1, W2: Installation location.

Claims (8)

A mounting tool for mounting the device to a predetermined mounting position so that the shaft can be adjusted,
It is composed of a first member and a second member, the first member is attached to the predetermined attachment location, and the device is attached to the second member,
The first member has a first connecting portion for connecting the second member, and an angle of the second member for rotating the first member in a first direction that is parallel to the attachment location. A first fixing portion and a second fixing portion for rotating the angle of the second member in a second direction which is a direction perpendicular to the attachment location ;
The second member is connected to the first connecting portion by the connecting member so as to be rotatable in the first direction and the second direction, and is rotatable and rotated according to an operation of the connecting member. A second connecting portion that is controlled to be immovable, a first adjusting portion that is moved toward and away from the first fixed portion, and a second moving portion that is moved toward and away from the second fixed portion. 2 adjustment units,
At least one of the first connecting part and the second connecting part is formed in a hemispherical shape.   One of the first connection part and the second connection part is formed in a convex shape and the other is formed in a concave shape, and the first connection part and the second connection part are formed in a hemispherical shape. The fixture according to claim 1, characterized in that: In the connecting member,
A connection screw inserted into an insertion hole formed in each of the first connection portion and the second connection portion; a nut into which the connection screw is screwed; and the first connection portion and the second connection portion. Biasing means for biasing one toward the other;
The fixture according to claim 1 or 2, further comprising:   The first member is formed with a housing portion that houses one of the nut and the head of the connection screw, and the nut or the head housed in the storage portion has a diameter from the center of the connection screw. The fixture according to claim 3, further comprising: a plurality of convex portions extending outward in the direction, wherein an inner peripheral surface of the housing portion is formed to engage with the convex portion in the circumferential direction. .   The first member is formed with a housing portion that houses one of the nut and the head of the connection screw, and a bottom surface of the storage portion is formed in a hemispherical shape. 5. The fixture according to claim 3, wherein any one of the heads is formed in an arc shape according to the bottom surface. The first adjusting portion and the first fixing portion have a through hole formed on one side and a screw hole formed on the other side, and are connected by a first shaft adjusting screw member, and the first urging means The first adjustment portion and the first fixing portion are biased in the separation direction,
The second adjusting portion and the second fixing portion have a through hole formed on one side and a screw hole formed on the other side, and are connected by a second shaft adjusting screw member, and are The second adjustment portion and the second fixing portion are biased in the separation direction;
The fixture as described in any one of Claims 1-5 characterized by the above-mentioned. The first member is provided with a first mounting portion for mounting at the mounting location, and a second mounting portion for projecting in the orthogonal direction from the first mounting portion for mounting at the mounting location. In the first mounting portion, the first connecting portion, the first fixing portion, and the second fixing portion are formed to protrude in the same direction as the protruding direction of the second mounting portion on the opposite side to the mounting surface. The said 2 connection part with which the said 2nd member was equipped, the 1st adjustment part, and the 2nd adjustment part are formed so that it may correspond to the said 1st connection part, a 1st fixing part, and a 2nd fixing part, respectively. The fixture according to any one of claims 1 to 6. A fixture adjustment method for adjusting the axis of the device with respect to a fixture for attaching the device to a predetermined attachment location,
The fixture is composed of a first member and a second member, the first member is attached to the predetermined attachment location, and the device is attached to the second member,
The first member has a first connecting portion for connecting the second member, and an angle of the second member for rotating the first member in a first direction that is parallel to the attachment location. A first fixing portion and a second fixing portion for rotating the angle of the second member in a second direction which is a direction perpendicular to the attachment location ;
The second member is connected to the first connecting portion by the connecting member so as to be rotatable in the first direction and the second direction, and is rotatable and rotated according to an operation of the connecting member. A second connecting portion that is controlled to be immovable, a first adjusting portion that is moved toward and away from the first fixed portion, and a second moving portion that is moved toward and away from the second fixed portion. 2 adjustment units,
At least one of the first connecting part and the second connecting part is formed in a hemispherical shape,
In a state where the second connecting portion is controlled to be rotatable by the connecting member, at least one of the first adjusting portion and the second adjusting portion is moved to move the first member and the second member. A first step of adjusting the relative angle of
After the adjustment by the first step, a second step of fixing the second connecting portion by the connecting member so as not to rotate,
The adjustment method of the fixture characterized by comprising.

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