KR20060051308A - Structure for installing driving source - Google Patents

Abstract

In the mounting structure of a drive source for mounting a drive source, it provides a mounting structure which can reliably prevent the leakage of the dust which may generate | occur | produce in connection with mounting of this drive source.

Apparatus having an input shaft 41 through which rotational motion is input from the drive rotation shaft 13 of the drive source 11 via the rotation transmission elements 61 and 63, and a housing 33 supporting the input shaft 41 axially ( 31) is a mounting structure of a drive source for mounting the drive source 11 above. The drive source 11 is fixed to one side 71a, and the other side 71b is formed with a recess 72 for accommodating the tip portion 13a of the drive rotation shaft 13 of the drive source 11 and at the same time. A mounting plate 71 formed around the entire outer circumferential edge of the concave portion 72 with the first mounting surface 81 on the housing 343, and the housing 33 on which the input shaft 41 protrudes. The outer wall surface 33g is provided with a second mounting surface 83 formed corresponding to the first mounting surface 81. By mounting the mounting plate 71 to the outer wall surface 33g of the housing 33 while the first and second mounting surfaces 81 and 83 face each other, the recess 72 and the outer wall surface ( 33g) from the front end portion 13a of the drive rotation shaft 13, the rotation transmission elements 61 and 63, and the outer wall surface 33g of the input shaft 41 in a space S72 partitioned. The protruding portion 41a is accommodated.

Drive source, rotary shaft, input shaft, tip, recess, housing, outer wall, mounting surface, protrusion, mounting plate

Description

STRUCTURE FOR INSTALLING DRIVING SOURCE}

1

It is a perspective view for demonstrating the mounting structure of the drive source 11 of 1st Embodiment which concerns on this invention.

[Figure 2]

It is a top view thereof.

3

This is a front view of it.

[Figure 4]

It is a top view which decomposes each element related to the said mounting structure.

5

It is a rear view of the mounting plate 71 seen from the V-V line arrow direction in FIG.

6

It is a front view of the housing 33 seen from the VI-VI line arrow direction in FIG.

7

It is a cross sectional view seen from the arrow direction VII-VII in FIG.

8

It is a longitudinal cross-sectional view seen from the arrow direction of the VIII-VIII line in FIG.

9

It is the front view seen from the arrow direction of the IX-IX line in FIG.

10A

It is a figure for demonstrating the attachment structure of the drive source 11 of 2nd Embodiment, and is a longitudinal cross-sectional view corresponding to the saw in the X-X-ray arrow direction in FIG.

10B.

It is sectional drawing seen from the B-B line arrow direction in FIG. 10A.

11

It is explanatory drawing of the modification of 2nd Embodiment.

12

It is explanatory drawing of the modification of 2nd Embodiment.

13A

It is a top view for demonstrating the mounting structure of the conventional drive source 111. FIG.

13B.

This is a front view of it.

Figure 14a.

It is an expanded view of the dustproof cover 172 used for the said mounting structure.

14B.

A perspective view of the dustproof cover 172.

<Description of main parts of drawing>

11 motor (drive)

13 drive shaft

13a Tip

31 Cam mechanism (device)

33 Housing

33g outer wall surface

41 input shaft

41a Shear (protrusion)

61 First gearwheel (rotation transmission element)

63 2nd Gear (rotation transmission element)

71 Mounting Plate

71a Front (Front)

71b rear (rear)

72 Oh

81 First mounting surface

83 2nd mounting surface

S72 Space

The present invention relates to a mounting structure of a drive source for mounting the drive source to an apparatus having an input shaft through which a rotational motion is input from a drive rotation shaft of the drive source through a rotation transmission element, and a housing for supporting the input shaft.

In recent years, products produced under a high clean environment such as a dust free room (clean room) are increasing. For example, it is an electronic component, such as a semiconductor integrated circuit, and a precision instrument component. In the production process, since adhesion of foreign matters to these products becomes a problem at the particulate level, a filter is provided in the dust-free chamber to remove fine foreign matters such as dust from the indoor air.

However, if such a filter is installed and leakage of dust or the like from the production apparatus used in the dust chamber is prevented from the beginning, it is more effective, and this also applies to the mounting structure of the drive source of the production apparatus.

However, the conventional mounting structure of the drive source is not such a consideration, and there is a concern that the dust generated in the mounting structure of the drive source will leak into the dust-free chamber to be cleaned.

An example thereof will be described with reference to FIGS. 13A and 13B. 13A and 13B show a mounting structure for attaching the motor 111 as a drive source to the housing 133 of the cam mechanism 131, where FIG. 13A is a top view and FIG. 13B is a front view.

In this example, a plate-shaped base plate 171 is used as the mounting structure. That is, the base plate 171 is mounted on the housing 133 of the cam mechanism 131, and the motor 111 is fixed to the base plate 171. As the rotation transmission element for transmitting the rotational motion of the drive rotation shaft 113 of the motor 111 to the input shaft 141 of the cam mechanism 131, a so-called winding power transmission device 160 is used. In detail, pulleys 161a and 161b are fixed to both the input shaft 141 and the drive rotation shaft 113 of the motor 111, and the endless belt 162 is hooked to these pulleys 161a and 161b. ought. Moreover, the whole of this winding-up power transmission apparatus 160 is covered by the dustproof cover 172, and this dustproof cover 172 is also fixed to the said base plate 171. As shown in FIG.

The dust cover 172 is generally a rectangular parallelepiped box formed by folding and bending a metal sheet. In detail, the blank 172a in which the side panels 174, 174, 175, and 175 were continuously provided in each side of the rectangular front panel 173 as shown in the expanded view of FIG. 14A from the flat metal plate material. Is a box formed by bending the respective side panels 174, 174, 175, and 175 of the blank 172a from each side of the front panel 173 to be bent to face the front panel 173. The surface is an opening (see perspective view in FIG. 14B). The dust cover 172 is fixed to the base plate 171 at the edge of the opening while the opening is directed toward the base plate 171 (see FIGS. 13A and 14B).

Here, the contact pieces 174b, 174b, 175b, and 175b for contacting the base plate 171 are bent inward on four sides 174a, 174a, 175a, and 175a of the edge of the opening, respectively. (Refer to FIG. 14B) and by abutting these contact pieces 174b, 174b, 175b, and 175b to the base plate 171, it is possible to give some degree of sealing to the inner space S172 of the dustproof cover 172. It is possible.

However, these abutment pieces 174b, 174b, 175b, and 175b are divided for each side panel as shown in Fig. 14B, and this divided portion becomes a gap G, which causes the winding power transmission device 160 to generate. There was a risk of leaking dust such as wear powder into the dust-free chamber.

This invention is made | formed in view of this conventional subject, Comprising: The mounting structure of the drive source for mounting a drive source WHEREIN: The mounting structure which can reliably prevent the leakage of the dust which may generate | occur | produce in connection with mounting this drive source is provided. It aims to do it.

The main invention for achieving this object is the attachment of a drive source for mounting the drive source to an apparatus having an input shaft into which a rotational motion is input from a drive rotation shaft of the drive source via a rotation transmission element, and a housing for supporting the input shaft. In the structure, the drive source is fixed to one side, and a recess is formed on the other side to receive the tip of the drive rotation shaft of the drive source, and surrounds the entire outer peripheral edge of the recess to form the first mounting surface on the housing. And a mounting plate formed thereon, and a second mounting surface formed on the outer wall surface of the housing in which the input shaft protrudes, the second mounting surface being formed corresponding to the first mounting surface, and the first and second mounting surfaces facing each other. The drive rotation between the spaces partitioned into the recess and the outer wall surface by mounting a plate on the outer wall surface of the housing. And a protruding portion from the outer wall surface of the input shaft, the tip end portion of the shaft, the rotational transmission element, and the input shaft.

Other features of the present invention will be apparent from the description of the specification and the accompanying drawings.

At least the following matters become clear by description of this specification and an accompanying drawing.

A drive source mounting structure for mounting the drive source in an apparatus having an input shaft through which a rotational motion is input from a drive rotation shaft of a drive source through a rotation transmission element and a housing for supporting the input shaft, wherein the drive source is provided on one side thereof. A mounting plate fixed to the other side and having a recess for accommodating the leading end of the drive rotation shaft of the drive source, surrounding the entire outer peripheral edge of the recess and having a first mounting surface to the housing, and the input shaft protruding And a second mounting surface formed on the outer wall surface of the housing to correspond to the first mounting surface, and mounting the mounting plate to the outer wall surface of the housing while facing the first and second mounting surfaces to each other. In the space defined by the recess and the outer wall surface, the front end of the drive shaft, the rotation transmission element, Group is a mounting structure of the driving source, it characterized in that the projecting parts from the outer wall surface is accommodated in the input shaft.

According to the mounting structure of such a drive source, when partitioning the said space by the recessed part of the said mounting plate and the outer side surface of the said housing, both the said 1st mounting surface and the 2nd mounting surface are over the perimeter of the said recessed part. Reception is possible without a gap. Therefore, it is possible to reliably prevent dust, such as abrasion powder, generated by the rotational transfer element or the like in the space from passing through these first and second mounting surfaces and leaking out of the space. That is, the dust which might generate | occur | produce from the rotational transmission element etc. in the said space can be reliably contained in the said space, and the leaking out of the mounting structure can be reliably prevented.

In the mounting structure of this drive source, the first and second mounting surfaces are preferably flat.

According to the mounting structure of such a drive source, since the said 1st and 2nd mounting surface is flat, such surface processing can be made easy. Moreover, from the ease of surface processing, the processing precision of these 1st and 2nd mounting surfaces can be improved, and as a result, the sealing property of the space partitioned by the said recessed part and the said outer wall surface can be improved more.

In the mounting structure of this drive source, it is preferable that the 2nd mounting surface is formed over the whole surface of the said outer wall surface, and the planar shape of the said mounting plate is the same as the said outer wall surface.

According to such a mounting structure of the drive source, the area of the second mounting surface can be as wide as possible and secured as far as possible without expanding the size of the housing. As a result, the sealing property of the space can be further improved.

In the mounting structure of this drive source, while the fitting convex part protrudes and is formed in either surface of the said 1st and 2nd mounting surface, in the other surface, the said fitting is located in the position corresponding to the said fitting convex part. It is preferable that the fitting recessed part which convex part encloses is formed.

According to such a mounting structure of the drive source, the fitting plate can be reliably fixed while positioning the mounting plate relative to the housing by inserting the fitting protrusion into the fitting recess.

In the mounting structure of the drive source, the outer shape of the housing is a rectangular parallelepiped having a flat and smooth outer wall, and the inner space of the housing converts the rotational motion input through the input shaft into a predetermined rotational motion and outputs it from the output shaft. It is preferable that an operation conversion mechanism to be housed is provided.

According to the mounting structure of such a drive source, the operation conversion mechanism which can be used in a high clean environment can be provided. That is, since the housing of the motion conversion mechanism is a rectangular parallelepiped and each of the outer wall surfaces is flat and smooth, it is difficult to attach dust to these outer wall surfaces, so that a clean state can be maintained for a long time. Moreover, even if dust adheres and accumulates, since each outer wall surface is flat and smooth, it is easy to wipe off and also the cleaning operation for restoring to an original clean state becomes easy.

In the mounting structure of this drive source, in the said one surface of the said mounting plate WHEREIN: The through-hole which passes through the male screw member for fastening and fixing this mounting plate to the outer wall surface of the said housing is formed in the range covered by the fixed said drive source. It is preferable that it is done.

According to the mounting structure of such a drive source, the male screw member which passes through the through-hole of a mounting plate can be reliably fastened so that a said mounting plate may not fall from the outer wall surface of a housing.

Moreover, the through hole formed in this mounting plate is covered by the said drive source, and is not exposed to the outside at all. As a result, it is possible to prevent the dust from collecting on the outer surface of the mounting plate such as holes, so that dust is difficult to collect. As a result, a clean state can be maintained for a long time.

In the mounting structure of this drive source, it is preferable that the said through hole has a accommodating part which accommodates the head part of the said external thread member.

According to such a mounting structure of the drive source, the head portion of the male screw member is accommodated in the accommodation portion of the through hole, so that the drive source in the mounting plate does not protrude from the surface to be fixed. Therefore, it is not necessary to devise a concave portion for accommodating the head portion of the male screw member on the side of the drive source, and the installation of the drive source on the mounting plate can be facilitated while covering the through hole.

In the mounting structure of this drive source, it is preferable that the through-hole is provided with the female screw which the male screw member of larger size than the male screw member screws.

According to the mounting structure of such a drive source, the operation | movement which removes a mounting plate from a housing becomes easy. That is, even when the mounting plate is firmly in close contact with the housing, the mounting plate can be easily detached by the following method.

First, after extracting the male screw member for fastening fixing from the through hole, the large male screw member is screwed into the female screw of the through hole. Then, the distal end of the male screw member abuts on the housing, and further screwing of the male screw member is regulated. However, if the screwing is carried out without stopping, the screw action occurs due to the screwing, that is, the mounting plate The force in the direction to be separated from the housing is given by the external thread, and this force forms a clearance between these mounting plates and the housing, and the mounting plate can be removed from the housing.

In the mounting structure of this drive source, it is preferable that the outer surface of the said mounting plate is flat and smooth.

According to the mounting structure of such a drive source, it becomes difficult to attach dust to these outer surfaces, and it becomes possible to maintain a clean state for a long term.

In the mounting structure of the drive source, the rotational transmission element is preferably a cog wheel fixed to the drive rotary shaft and a cog wheel fixed to the input shaft while engaging the cog wheel with each other.

According to such a drive source mounting structure, the rotational motion is reliably transmitted from the drive rotary shaft to the input shaft by the engagement of these gears. In addition, dust such as abrasion powder which may be produced by this engagement is surely trapped in the space defined by the recessed portion and the outer wall surface, and leakage of the outside of the mounting structure is reliably prevented.

=== First Embodiment ===

1-4 is a figure for demonstrating the mounting structure of the drive source 11 of 1st Embodiment which concerns on this invention. 1 is a perspective view, FIG. 2 is a top view, and FIG. 3 is a front view. Fig. 4 is an exploded top view of each element involved in the mounting structure. In addition, in FIG. 4, the mounting plate 71 is seen from the cross section. In addition, for convenience of explanation, as shown in each figure, three directions orthogonal to each other are defined as an up-down direction, a front-back direction, and a left-right direction, respectively.

First, the mounting structure of the drive source 11 concerning this invention is demonstrated schematically.

1 to 3, the mounting structure of the drive source 11 of the illustrated example is applied to the case where the motor 11 as the drive source is attached to the housing 33 of the cam mechanism 31 as the motion conversion mechanism. When the motor 11 is mounted to the housing 33 by this mounting structure, as shown in FIGS. 2 and 3, the input shaft 41 of the cam mechanism 31 axially supported by the housing 33 is predetermined. It is connected to the drive rotary shaft 13 of the motor 11 via the rotation transmission elements 61 and 63 of the cam 11, whereby the cam mechanism 31 is in a state capable of exerting its motion conversion function. In other words, the rotational motion inputted to the input shaft 41 is converted into a predetermined rotational motion and is output from the output shaft 51.

In addition, in the example of illustration, what is called a cogwheel power transmission device is applied as rotation transmission elements 61 and 63, In detail, the 1st cogwheel 61 fixed to the said input shaft 41, and this first cogwheel A second cogwheel 63 is shown, which is fixed to the drive shaft 13 while engaging 61. In addition, in FIG. 3, the pitch circle of these cogwheels 61 and 63 is shown by the dashed-dotted line.

In this mounting structure, a mounting plate 71 as shown in FIGS. 1 to 3 is used, and the motor 11 is fixed to the housing 33 via the mounting plate 71. That is, as shown in the exploded view of FIG. 4, the motor 11 is fixed to one surface 71a of the mounting plate 71, and the driving rotary shaft of the motor 11 is disposed on the surface 71b on the opposite side of the mounting plate 71. The recessed part 72 which accommodates the front-end | tip part 13a of 13 is formed. The concave portion 72 is fixed to the housing 33 while the mounting plate 71 is fixed to the housing 33 while facing the outer wall surface 33g of the housing 33 from which the input shaft 41 protrudes. 11) Fit. However, at this time, the space S72 is formed into the recessed part 72 and the said outer wall surface 33g, and the front end part 13a of this drive rotation shaft 13 and this front end part 13a in the said space S72. ), The front gear 41a which is a projecting portion from the outer wall surface 33g of the input shaft 41, and the first gear fixed to the front gear 41a. The gear 61 is accommodated.

Here, although the back view of the mounting plate 71 seen from the V-V line arrow direction in FIG. 4 in FIG. 5 and FIG. 6 and the front view of the housing 33 seen from the VI-VI line arrow direction in FIG. 4 are shown, respectively, As shown in FIG. 5, the surface 71b of the mounting plate 71 surrounds the entire outer circumferential edge of the concave portion 72 to form a first mounting surface 81 (a portion indicated by diagonal lines in FIG. 5). On the other hand, on the outer wall surface 33g of the housing 33 shown in FIG. 6, a second mounting surface 83 (part shown in FIG. 6, indicated by diagonal lines) is formed corresponding to the first mounting surface 81. It is. In the above installation state, as shown in FIG. 2, the first and second mounting surfaces 81 and 83 are disposed so that the first and second mounting surfaces 81 and 83 face each other. Both can be contacted without a gap over the entire circumference of the recess 72. As a result, dust such as abrasion powder which may occur due to the engagement of the first and second cogwheels 61 and 63 accommodated in the space S72 is transferred to the first mounting surface 81 and the second mounting surface ( It is surely trapped in the said space S72, without leaking out between 83.

Hereinafter, the mounting structure of this drive source 11 is demonstrated in detail. FIG. 7 is a cross sectional view seen from the arrow VII-VII line in FIG. 1, and FIG. 8 is a longitudinal cross-sectional view seen from the arrow VIII-VIII line in FIG. In addition, both of them are seen as a part from the upper surface or from the side, and in FIG. 7, the mounting plate 71 is shown in a removed state.

As shown in Figs. 7 and 8, the housing 33 of the cam mechanism 31 is a rectangular parallelepiped box consisting of six wall portions, that is, the front wall portion 33a, the rear wall portion 33b, and the upper wall portion. 33c, the lower surface wall part 33d, the right side wall part 33e, and the left side wall part 33f are provided. In addition, the outer wall surfaces of these wall portions 33a, 33b, ... 3f are all formed flat and smooth, and it is difficult for dust to drift in the air to adhere to the outer wall surface. It is also easy to wipe off.

Among these wall portions 33a, 33b, ... 33f, bearings 43a and 43b for axially supporting the input shaft 41 are shown in the front wall portion 33a and the rear wall portion 33b as shown in FIG. The input shaft 41 is provided, respectively, and is arrange | positioned toward the axial center C41 in the front-back direction. In addition, since the bearing 43b of the rear wall part 33b is fitted in the recessed part 44b formed in the inner wall surface of the said rear wall part 33b, the rear end part 41b of the input shaft 41 is a housing | casing. The bearing 43a of the front wall portion 33a is fixed to the through hole 44a of the front wall portion 33a through the gap member 45, but does not protrude to the outside of the input shaft 33. The front end portion 41a of the 41 protrudes from the front wall portion 33a to the outside of the housing 33. And the said 2nd mounting surface 83 for attaching the said mounting plate 71 to the outer wall surface 33g of this front wall part 33a is processed (refer the part shown with an oblique line in FIG. 6). Moreover, this 2nd mounting surface 83 is formed flat, and the surface processing is made easy. Moreover, the processing precision of the 2nd mounting surface 83 can also be made high from this ease of surface processing. The characteristic on the surface processing of such a 2nd mounting surface 83 is the same also about the 1st mounting surface 81 of the mounting plate 71 mentioned later, The description is abbreviate | omitted.

In addition, although the input shaft 41 is arrange | positioned at the left side part in the front wall part 33a as shown in FIG. 6 here, this is as shown in FIG. 8, The said output shaft 51 is the right side in the housing 33. As shown in FIG. This is because they are arranged in space. The first cogwheel 61 is fixed to the front end portion 41a of the input shaft 41 with the rotation centers aligned with each other.

On the other hand, as shown in FIG. 4 and FIG. 5, the mounting plate 71 is a rectangular plate having the same planar shape as the front wall portion 33a of the housing 33, and is molded in the same thickness over the entire surface. The six outer surfaces of the mounting plate 71 are also formed flat and smoothly as in the outer wall surface of the housing 33 of the cam mechanism 31 described above. Therefore, it is difficult to attach dust or the like that floats in the air on these outer surfaces, and can be easily wiped off even if they adhere and accumulate.

The front view seen from the IX-IX line arrow direction in FIG. 4 is shown in FIG. As shown to FIG. 9 and FIG. 4, the mounting surface 87 of the motor 11 (part shown with a diagonal line in FIG. 9) in the right part in the front surface 71a of this mounting plate 71 is a motor below. And a concave portion 72 are formed on the rear surface 71b on the opposite side thereof, as shown in FIGS. 5 and 4. The motor mounting surface 87 is formed on the right side of the input shaft 41 of the cam mechanism 31 on the left side of the outer wall surface 33g of the front wall portion 33a of the housing 33 as described above. ) Is protruding.

As shown in FIGS. 1 to 4, the motor 11 is rotatable to a cylindrical motor main body 15 having a rear end portion having a substantially rectangular flange 15a in a flange shape, and the motor main body 15. It has a drive rotation shaft 13 which is axially supported and the tip portion 13a protrudes from the rear end surface of the flange 15a. And while the said drive rotation shaft 13 passes through the through hole 73 formed in the substantially center of the said motor mounting surface 87 shown to FIG. 4 and FIG. 9, the rear end surface of the said flange 15a is the said motor mounting surface. The motor 11 is fastened and fixed to the mounting plate 71 by the bolts 16 at the four corners of the flange 15a while being brought into contact with the 87 without any gap.

4, 5, and 9, the through hole 73 of the mounting plate 71 communicates with the recess 72, that is, the through hole 73 is the recess 72. It is part of). Therefore, in the above-mentioned fastening fixed state, the front-end | tip part 13a of the said drive rotation shaft 13 is accommodated in the recessed part 72 of the said mounting plate 71 as shown in FIG. Moreover, although the 2nd cogwheel 63 which forms one side of the said rotation transmission element is fixed to the front-end | tip part 13a at the same center of rotation, this 2nd cogwheel 63 is also fixed to the said recessed part 72. FIG. Are accepted. When the mounting plate 71 is mounted on the housing 33, the recess 72 also accommodates the first cogwheel 61 of the input shaft 41 that forms one side of the rotational transmission element. . For this reason, the said recessed part 72 not only can accommodate both these 1st gear 61 and the 2nd gear 63, but also shows a mounting plate as shown to FIG. 4, FIG. 5, and FIG. It is formed not only to the right part of 71 but to the left part. However, the size of the recess 72 should be the minimum size necessary for the purpose of increasing the area of the first mounting surface 81 formed by surrounding the outer peripheral edge of the recess 72. In the case of the example, the planar shape of the concave portion 72 is slightly larger than that while conforming to the outer shape of the rotational transmission elements 61 and 63, and in detail, the first gear 61. And two circles slightly larger than the second gear 63 overlap each other with a veneer diagram shape.

As shown in FIG. 5, the pin 85a as a fitting convex part protrudes in the four corners of the 1st mounting surface 81 of this mounting plate 71, respectively, As shown in FIG. 6, this 1st mounting surface Pin holes 85b as fitting recesses are formed at four corners of the second mounting surface 83 on the outer wall surface of the housing 33 corresponding to 81. The mounting plate 71 is mounted on the housing 33 as shown in FIGS. 4 and 2, while the first mounting surface 81 is facing the second mounting surface 83. 85a) is inserted into the pin hole 85b.

Moreover, in this installation state, as shown in FIG. 2, the space S72 is partitioned by the outer wall surface 33g of the said recessed part 72 and the said front wall part 33a, and is formed in this space S72. The first cogwheel 61 fixed to the front end portion 41a of the input shaft 41 and the second cogwheel 63 fixed to the distal end portion 13a of the drive rotation shaft 13 are accommodated. The first mounting surface 81 and the second mounting surface 83 formed to surround the entire outer circumferential edge of the 72 are abutted without a gap in the face fit. Therefore, dust, such as abrasion powder which may arise in the engagement of the said 1st and 2nd gears 61 and 63 accommodated in the said space S72, these 1st mounting surface 81 and the 2nd mounting surface 83 It is surely trapped in the space S72 without leaking out through the space between them.

Here, the cam mechanism 31 as an example of the motion conversion mechanism accommodated in the housing 33 will be described with reference to FIGS. 7 and 8.

The cam mechanism 31 converts the rotational motion input through the input shaft 41 into a predetermined rotational motion and outputs it from the output shaft 51. As mentioned above, the input shaft 41 is arrange | positioned the shaft center C41 toward the front-back direction (refer FIG. 7). On the other hand, the output shaft 51 is arrange | positioned at the right direction of the said input shaft 41, The axial center C51 is facing the up-down direction orthogonal to the said input shaft 41. As shown in FIG. That is, the output shaft 51 is rotatably supported by a pair of bearings 53c and 53d provided on the upper wall portion 33c and the lower surface wall portion 33d at the upper end and the lower end thereof, as shown in FIG. It is. Moreover, the bearing 53d of the lower surface wall part 33d is fitted to the recessed part 54d formed in the inner wall surface of the lower surface wall part 33d, and the lower end part of the output shaft 51 does not protrude outside the housing 33, The bearing 53c of the upper wall portion 33c is fixed to the through hole 54c formed in the upper wall portion 33c through the cap member 55, and passes through the through hole 54c to output the shaft 51. The upper end part of) projects from the upper wall part 33c to the outer side of the housing 33. Therefore, the output of the rotation operation | movement after operation change can be taken out of the housing 33 from this upper end part.

A so-called globoidal cam 35 is used for this cam mechanism 31. As shown in Fig. 7, the globoid cam 35 has a rib 36 formed in a spiral shape on the outer circumferential surface of the input shaft 41 as a main body, and both side surfaces 36a and 36b of the rib 36 are cams. It functions as cotton. On the other hand, a plurality of cam followers 37 are provided on the outer circumferential surface of the output shaft 51 at equal intervals along the circumferential direction, and these cam followers 37 are formed on both side surfaces 36a and 36b of the ribs 36. At least one of the sides is to be contacted. Then, when the input shaft 41 rotates, these cam followers 37 abut on the side surfaces 36a and 36b of the rib 36 to rotate the side surfaces 36a and 36b, and the rib 36 at that time. Rotational torque is given to the cam follower 37 from the front to back, and the cam follower 37 is sequentially sent to the front and back direction, and as a result, the output shaft 51 rotates around the axis 51 in the vertical direction. Do it.

The rotation operation of the output shaft 51 can be changed in various ways by appropriately changing the spiral shape of the rib 36 of the globoid cam 35. For example, setting of the spiral shape of the rib 36 is performed. According to this, it is also possible to convert the continuous rotation operation of the input shaft 41 into the intermittent rotation operation and output it from the output shaft 51.

In addition, at least one cam follower 37 abuts on both sides 36a and 36b of the rib 36 at all times so as to prevent a decrease in the accuracy of rotational operation due to backlash.

=== Second Embodiment ===

A second embodiment will be described with reference to FIGS. 10A, 10B, and 11. FIG. 10A is a longitudinal sectional view seen from the arrow direction X-X in FIG. 2, and FIG. 10B is a sectional view seen from the arrow B-B arrow in FIG. 10A. 10B, the motor 11 and the 2nd gear 63 are shown from the side.

In the above-described first embodiment, the mounting plate 71 is installed on the housing 33 only by intruding into the pin holes 85b of the pins 85a. However, in the second embodiment, the mounting is more reliably performed. In order to be able to do this, the bolt is fixed in addition to the above-mentioned intrusion. That is, as shown in FIGS. 10A and 10B, the through plate 93 passing through the bolt 91 as the male screw member is formed in the mounting plate 71, and the housing 33 is provided with the male screw of the bolt 91. A female screw 95 for screwing is formed, whereby the mounting plate 71 is fastened and fixed to the housing 33.

However, when this through hole 93 is exposed to the outside, the dust which floats in the air in this through hole 93 is easy to collect. For this reason, the formation position of the said through hole 93 is set in the said motor mounting surface 87 shown by the dashed-dotted line in FIG. 10A, and the motor with which the said through hole 93 was attached to the mounting plate 71 is shown. It is made to cover by the flange 15a of (11). As shown in Fig. 10B, the through hole 93 has an accommodating portion 94. At the time of fastening and fastening, the head portion 91a of the bolt 91 enters the accommodating portion 94, and the flange ( Consideration does not interfere with the flange face of 15a).

Explanatory drawing of the modification of 2nd Embodiment is shown to FIG. 11A-FIG. 11D. In addition, all of FIGS. 11A-11D are shown by the same form as FIG. 10B.

As shown in FIG. 11A, the female screw 96 in which the bolt 92 larger than the said bolt 91 can be screwed is formed in the inner peripheral surface of the through-hole 93 concerning this 2nd Embodiment. And in this way, the operation which removes the mounting plate 71 from the housing 33 will become easy. That is, even when the pin 85a of the mounting plate 71 is firmly penetrated into the pin hole 85b of the said housing 33, it becomes possible to remove easily as follows.

First, as shown in FIG. 11A, the motor 11 is removed from the mounting plate 71 and the through hole 93 is exposed to the outside. Next, as shown in FIG. 11B, after the bolt 91 for fastening fixing is pulled out from the through hole 93, as shown in FIG. 11C, a large bolt is attached to the female screw 96 of the through hole 93. As shown in FIG. Screw in (92). Then, if only a predetermined amount is screwed in, the bolt 92 is larger than the bolt 91 to which the female screw 95 of the housing 33 is originally screwed, so that the tip portion 92b of the female screw 95 More screwing is restricted to the edge of the inner circumference. However, if screwing is continued without stopping here, a jack action will arise by screwing, ie, a force will act in the direction which separates the mounting plate 71 and the housing 33. As shown in FIG. Then, this force forms a gap G between the mounting plate 71 and the housing 33 against the depressed input acting between the pin hole 85b and the pin 85a to form the housing 33. ), The mounting plate 71 can be easily removed.

Moreover, it is preferable to form two or more through-holes 93 with the female screw 96 concerning a said modification from a viewpoint of the ease of removal, In the example of FIG. 12 shown by the same formula as FIG. 10A, These through holes 93 and 93 are formed at points symmetrical with respect to the drive rotation shaft 13 of the motor 11 with each other.

The reason why it is preferable to form the plurality of through holes 93 and 93 in this manner is that the mounting plate 71 is pinned by screwing the bolts 95 to the respective female threads 96 of the plurality of through holes 93. It is because it becomes possible to move parallel to the fitting direction of 85a. That is, when removing the mounting plate 71, it becomes possible to pull out the pin 85a from the pin hole 85b, moving the pin 85a in parallel with the indentation direction, and as a result, when the said pin 85a is pulled out from the pin hole 85b, This is because the resistance can be made small.

=== Other Embodiments ===

As mentioned above, although embodiment of this invention was described, this invention is not limited to this embodiment, The deformation as shown below is possible.

(a) In the above-mentioned embodiment, although the cam mechanism 31 provided with the globoid cam 35 was shown as an example of the motion conversion mechanism, it is not limited to this at all. That is, if the housing 33 has the input shaft 41 into which rotational motion is input, the mounting structure of the drive source which concerns on this invention can be applied, For example, what is called a crank mechanism instead of the said cam mechanism 31, for example. You may apply to these etc.

(b) In the above-mentioned embodiment, although the cogwheel power transmission device which consists of the 1st cogwheel 61 and the 2nd cogwheel 63 was shown as an example of a rotational transmission element, it is not limited to this at all. In other words, any device capable of transmitting the rotational motion of the drive rotary shaft 13 of the drive source to the input shaft 41 may be used. For example, the above-described winding power transmission device or the like may be used.

(c) In the above-mentioned embodiment, although the motor 11 is shown as an example of a drive source, although the kind of the motor 11 is not mentioned in particular, it is provided with the drive rotary shaft 13 which drives and rotates according to input power. All of them are applicable. For example, it may be an electric motor that rotates the drive rotary shaft with electric power, or an air pressure motor or a hydraulic motor that rotates the drive rotary shaft as air or oil as a working fluid.

(d) In the above-described embodiment, the two are in direct contact with each other without any intervening between the first mounting surface 81 and the second mounting surface 83, but the present invention is not limited thereto. For example, from a viewpoint of improving the sealing property of the said space S72 which the said recessed part 72 forms, the paste material, such as a silicon | silicone, on the said 1st and 2nd mounting surfaces 81 and 83 A seal member consisting of) may be applied. In addition, when it is not going to remove the mounting plate 71, you may apply | coat an adhesive agent instead of the said real thing.

According to the present invention, in the mounting structure of the driving source for mounting the driving source, it is possible to provide a mounting structure that can reliably prevent the leakage of dust that may be generated in connection with the mounting of the driving source.

Claims (10)

In a mounting structure of a drive source for mounting the drive source in an apparatus having an input shaft through which a rotational motion is input from a drive rotation shaft of a drive source via a rotation transmission element, and a housing supporting the input shaft, On one side, the drive source is fixed, and on the other side, a recess for accommodating the distal end of the drive rotation shaft of the drive source is formed, and a mounting plate having a first mounting surface on the housing formed around the entire outer peripheral edge of the recess and, A second mounting surface formed on an outer wall surface of the housing in which the input shaft protrudes, corresponding to the first mounting surface, In the space partitioned by the recess and the outer wall surface by mounting the mounting plate on the outer wall surface of the housing while facing the first and second mounting surface to each other, And a protruding portion from the outer wall surface of the input shaft, the leading end portion of the drive rotation shaft and the rotation transmission element. The method of claim 1, And said first and second mounting surfaces are flat. The method according to claim 1 or 2, A second mounting surface is formed over the entire surface of the outer wall surface, and the planar shape of the mounting plate is the same as the outer wall surface, the mounting structure of the drive source. The method according to any one of claims 1 to 3, A fitting concave in which the fitting convex portion protrudes from one surface of the first and second mounting surfaces, and the fitting convex portion is inserted into a position corresponding to the fitting convex portion on the other surface. A drive source mounting structure, characterized in that an additional portion is formed. The method according to any one of claims 1 to 4, The outer shape of the housing is a rectangular parallelepiped having a flat and smooth outer wall, And a motion conversion mechanism for converting the rotational motion input through the input shaft into a predetermined rotational motion and outputting the output motion from the output shaft in the inner space of the housing. The method according to any one of claims 1 to 5, In one side of the mounting plate, a through hole passing through a male screw member for fastening and fixing the mounting plate to the outer wall surface of the housing is formed in a range covered by the fixed driving source. Mounting structure. The method of claim 6, The through hole has a housing portion for accommodating a head portion of the male screw member. The method according to claim 6 or 7, The through-hole is provided with a female screw to which a male screw member larger in size than the male screw member is screwed. The method according to any one of claims 1 to 8, The outer surface of the mounting plate is flat and smooth, the mounting structure of the drive source. The method according to any one of claims 1 to 9, And the rotation transmission element is a cog wheel fixed to the drive rotation shaft and a cog wheel fixed to the input shaft while engaging the cog wheel with each other.

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