Mounting member and conveyor device

Abstract

To provide a technique that can facilitate assembly work of a conveyor device transmitting power by means of gears.SOLUTION: In a mounting structure for a conveyor roller, a frame member has a frame side engagement portion 38, and a roller member 2 has a roller body 15 and a shaft portion 21. The shaft portion 21 comprises a gear fixing portion to which a gear member 6 is mounted. A mounting member 5 has a shaft support portion 51a through which the shaft portion 21 is inserted and supported, and mounting side engagement portions 55, 56 that engage with the frame side engagement portion 38. With the shaft portion 21 inserted into the shaft support portion 51a and the roller body 2 and the gear fixing portion positioned on both sides with the mounting member 5 between them, the mounting member 5 can be inserted into the frame member 3 from above or below, and the mounting side engaging portions 55, 56 engage with the frame side engaging portion 38 when the mounting member is inserted into the frame member 3 and the shaft portion 21 is supported by the frame member via the mounting member 5.SELECTED DRAWING: Figure 6

Description

Technical Field

[0001] The present invention relates to a conveyor device With conveyor roller Mounting member to be attached and also to a conveyor device having such a conveyor roller attached thereto by such an attachment Member of the conveyor roller. 。

Background Art

[0002] In a product assembly line or a collection site for home delivery, a conveyor device is used for conveying objects. As such a conveyor device, there are a belt conveyor and a roller conveyor. For example, as such a roller conveyor, there is one disclosed in Patent Document 1. The roller conveyor of Patent Document 1, like a general roller conveyor, has a frame member composed of a pair of left and right side frames arranged in parallel and a plurality of conveyor rollers (transport rollers), and each conveyor roller is pivotally supported by two side frames. Specifically, a shaft portion located on one side in the longitudinal direction of the conveyor roller is inserted into a bearing hole of one side frame, and a shaft portion located on the other side is inserted into a bearing hole of the other side frame. And the main body portion of the conveyor roller rotates between the two side frames.

[0003] Also, one of the conveyor rollers is a roller with a built-in motor that serves as a driving roller, and the other conveyor rollers are driven rollers that rotate freely. Adjacent conveyor rollers are wound with a transmission belt, and when the driving roller rotates, all the driven rollers rotate. Incidentally, this roller conveyor is provided with a stopper member having a roller portion that functions as a conveyor roller.

[0004] In addition, Patent Document 2 discloses a roller conveyor having a plurality of rollers. In this roller conveyor, each roller has a roller part and a gear part, and both of them rotate together. And, another gear attached to the frame is positioned between the gear parts of two adjacent rollers. That is, in the roller conveyor of Patent Document 2, power is transmitted between adjacent rollers by gears, and adjacent rollers rotate in conjunction with each other.

[0005] In addition, in the roller conveyor of Embodiment 1 in Patent Document 2, a guide pin that is the shaft part of the roller is placed on a support part that is a part of the frame, and a cover is attached to the frame. At this time, the guide pin is pressed by a recess formed in the lower edge of the cover, and the roller is attached to the frame. Note that, in the roller conveyor of Embodiment 2 in Patent Document 2, a roller having a roller part and a gear part is inserted through a bearing hole formed in the wall part of the frame, so that the roller part is arranged inside the wall part of the frame and the gear part is arranged outside the wall part of the frame. This roller is a roller supported only by one of the frames extending in parallel.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0007] The inventors of the present invention considered performing power transmission between adjacent conveyor rollers in a conveyor device as disclosed in Patent Document 1 using gears instead of a transmission belt. And, when actually prototyping such a conveyor device, the assembly of the conveyor device was very complicated. That is, in such a conveyor device, after inserting the shaft portion of the conveyor roller into the bearing hole of the frame member to attach the conveyor roller, it is necessary to attach a gear member to the shaft portion of the conveyor roller from the outside of the frame member. However, when constructing the conveyor device in a narrow space or the like, the assembly work is difficult and may take time for assembly.

[0008] Further, in the roller conveyor of Embodiment 1 in Patent Document 2 described above, the shaft portion of the roller is aligned and placed on the support portion, and further, when attaching the cover, the concave portion of the cover must be aligned with the shaft portion of the roller for attachment, making the assembly work difficult. Furthermore, in the roller conveyor of Embodiment 2 in Patent Document 2 described above, since the roller is inserted into the bearing hole from the inside of the frame, the size of the gear portion needs to be such that it can pass through the bearing hole. That is, there is a problem that the degree of freedom in the size of the adoptable gear is low. Also, when adopting a structure in which one conveyor roller is supported by two side frames as in Patent Document 1, the work of inserting the end portion of the roller into the bearing hole becomes extremely difficult, and as a result, the assembly work becomes difficult.

[0009] That is, in the conventional conveyor device, there is room for improvement from the viewpoint of facilitating the assembly work of the conveyor device. In particular, when it is necessary to attach a gear separately formed on the shaft portion of the conveyor roller (roller member), there is room for improvement in facilitating the assembly work of the conveyor device.

[0010] Therefore, an object of the present invention is to provide a technology capable of facilitating the assembly work of a conveyor device that transmits power with a gear.

Means for Solving the Problems

[0011] One aspect of the present invention for solving the above problems is In a conveyor device formed by attaching a roller member to a frame member, it is a mounting member interposed between the roller member and the frame member, having a main body portion and a bearing member, and inserting and fixing a part of the main body portion into the vertical plate portion of the frame member. The bearing member is a bearing having a shaft hole extending in a first direction, and the middle portion of the bearing member in the first direction is arranged inside the main body portion. It is a mounting member. Preferably, the bearing member is attached to the main body portion in a state where each of a surface adjacent to one-side opening of the shaft hole in the first direction and a surface adjacent to the other-side opening is visible from the outside. Preferably, one-side end portion of the bearing member in the first direction is located inside one-side end portion of the main body portion in the first direction, and the other-side end portion of the bearing member in the first direction is located inside the other-side end portion of the main body portion in the first direction. Preferably, the entire outer peripheral surface of the bearing member located between both end portions in the first direction is covered from the outside by the main body portion. Preferably, the main body portion has an engagement groove portion, and the engagement groove portion is a groove extending from one-side side of the main body portion downward and then to the other-side side. It is a groove that can engage with a part of the vertical plate portion of the frame member, and can be attached to the frame member in a state of being placed on the vertical plate portion of the frame member and with a part of the vertical plate portion of the frame member inserted into the engagement groove portion. Another aspect of the present invention is a conveyor device having the above-described mounting member, a roller member, and a frame member, wherein the roller member is attached to the frame member via the mounting member. One aspect of a related invention related to the present invention is In a conveyor device formed by attaching a roller member to a frame member, there is provided an attachment structure of a conveyor roller for attaching the roller member to the frame member via an attachment member. The frame member has a first side frame portion and a second side frame portion. The first side frame portion has a frame-side engagement portion. The second side frame portion has a shaft insertion hole. The roller member has a roller body and a shaft portion. The shaft portion includes a gear fixing portion to which a gear member is attached, and the shaft portion and the gear member rotate together. The attachment member has a shaft support portion for inserting and supporting the shaft portion, and an attachment-side engagement portion that engages with the frame-side engagement portion. The shaft portion includes a first shaft portion located on one side in the longitudinal direction and a second shaft portion located on the other side. The second shaft portion is inserted into the shaft insertion hole, and the first shaft portion is inserted into the shaft support portion. With the roller body and the gear fixing portion positioned on both sides sandwiching the attachment member, the attachment member can be inserted into the frame member from above or below. By inserting the attachment member into the frame member, the attachment-side engagement portion engages with the frame-side engagement portion, and the first shaft portion is supported by the frame member via the attachment member. This is the attachment structure of the conveyor roller. Another aspect of a related invention associated with the present invention is a conveyor roller mounting structure in a conveyor device formed by attaching a roller member to a frame member, wherein the roller member is attached to the frame member via an attachment member, the frame member has a frame-side engaging portion, the roller member has a roller body and a shaft portion, the shaft portion is provided with a gear fixing portion to which a gear member is attached, the shaft portion and the gear member rotate together, the attachment member has a shaft support portion for inserting and supporting the shaft portion and an attachment-side engaging portion that engages with the frame-side engaging portion, the shaft portion is inserted through the shaft support portion, and with the roller body and the gear fixing portion positioned on both sides sandwiching the attachment member, it is possible to insert the attachment member into the frame member from above or below, and by inserting it into the frame member, the attachment-side engaging portion engages with the frame-side engaging portion, and the shaft portion is supported by the frame member via the attachment member.

[0012] According to the mounting structure of the conveyor roller of this aspect, the gear member can be attached in advance to the shaft portion of the roller member at a work-friendly location, and with the gear member attached to the roller member, the roller member can be attached to the frame member. In addition, by inserting the attachment member into the frame member from above or below, the shaft portion of the roller member is supported by the frame member, so alignment is easier compared to a structure that supports the shaft portion of the roller member by sandwiching it with recesses or the like formed in the upper and lower members respectively. From these, the assembly work of the conveyor device can be facilitated. Also, there is no need to insert the shaft portion to which the gear member is attached into the shaft hole of the frame member, and the degree of freedom in the size of the gear member to be attached is high.

[0013] In the above aspect, it is preferable that the attachment member has an engaging groove portion as one of the attachment-side engaging portions, the engaging groove portion is a groove portion formed at the edge portion of the attachment member, and the engaging groove portion is formed in one or more of the three directions including the lower side and both side portions of the attachment member. Further, it is more preferable that the engaging groove portion is a groove portion formed on three sides including the lower side and both side portions of the mounting member.

[0014] According to this preferable aspect, it is possible to engage the mounting member and the frame member with a simple configuration, and it is possible to prevent an unexpected displacement of the mounting member engaged with the frame member.

[0015] In the above-described aspect, the mounting member has an engaging claw portion as one of the engaging portions on the mounting side, the engaging claw portion has a support portion extending in a cantilever shape and a locking portion formed at the tip side of the support portion, and it is preferable that the mounting member elastically deforms by being inserted into the frame member.

[0016] According to this preferable aspect, it is possible to firmly engage the mounting member and the frame member.

[0017] In the above-described aspect, it is preferable that the shaft support portion is constituted by a bearing member provided integrally with the periphery.

[0018] In this preferable aspect, the shaft portion of the roller member is supported by the frame member by the mounting member in which the peripheral main body portion and the bearing member are integrated. For this reason, it is not necessary to separately perform a mounting operation such as a bearing, which is preferable.

[0019] The present invention Related invention related to Another aspect of the present invention is a conveyor device in which the roller member is attached to the frame member by the above-described conveyor roller attachment structure.

[0020] The conveyor device of this aspect is easy to assemble.

[0021] The above aspect preferably has a plurality of the conveyor rollers, the gear members are attached to the respective conveyor rollers, and the two gear members attached to the two conveyor rollers are interlocked via one or a plurality of interlocking gear members provided therebetween, so that power is transmitted between the two conveyor rollers.

[0022] The above aspect preferably has a plurality of the conveyor rollers, and the conveyor rollers preferably include a driving roller serving as a power source and a driven roller that rotates together with the driving roller.

[0023] In this preferred aspect, it is not necessary to separately provide a power source such as a motor around the conveyance path, such as below the conveyance path, and it is possible to widely secure space around the conveyance path.

[0024] The above aspect preferably has a cover member attached to the frame member, and at least a part of the cover member is preferably located at a position adjacent above the attachment member.

[0025] In this preferred aspect, rattling of the attachment member during operation can be prevented.

[0026] The present invention Related invention related to Another aspect of the present invention is a method for attaching the conveyor roller to the frame member by the above-described attachment structure of the conveyor roller. The conveyor roller has a first shaft portion serving as the shaft portion and a second shaft portion. The frame member has a pair of first side frame portions and second side frame portions. The method for attaching each of the first shaft portion and the second shaft portion to the first side frame portion and the second side frame portion includes a first step of inserting the first shaft portion into the shaft support portion and attaching the gear member to the gear fixing portion of the first shaft portion, a second step of inserting the second shaft portion into the shaft insertion hole of the second side frame portion, and a third step of inserting the attachment member into the first side frame portion after the first step and the second step.

[0027] Even in this aspect, the assembly work of the conveyor device can be facilitated. Also, the degree of freedom in the size of the gear member to be attached is high.

Effects of the Invention

[0028] According to the present invention, the assembly work of a conveyor device that transmits power by gears can be facilitated.

Brief Description of the Drawings

[0029]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Modes for Carrying Out the Invention

[0030] Hereinafter, the conveyor device 1 according to the embodiment of the present invention will be described in detail with reference to the drawings, but the present invention is not limited to these examples.

[0031] The conveyor device 1 of this embodiment is a so-called roller conveyor, and as shown in Fig. 1(a), it includes a plurality of conveying rollers 2 (roller members) and a frame member 3. And, although it will be described in detail later, the fixed shaft of the conveying roller 2 is supported by the frame member 3 via an attachment member 5 (see Fig. 6 etc.). Also, the plurality of conveying rollers 2 are arranged in parallel at intervals, and a gear member 6 is attached to one side shaft of each conveying roller 2 (see Fig. 1(b)). From this, as shown in Fig. 1(b), the plurality of gear members 6 are also arranged in parallel at intervals in the conveying direction. Here, in the gear train constituted by the plurality of gear members 6, two adjacent gear members 6 mesh with an interlocking gear member 7 located between them.

[0032] That is, the first gear member 6 from the upstream side in the conveying direction and the second gear member 6 mesh with the first interlocking gear member 7 from the upstream side in the conveying direction. Similarly hereinafter, the second gear member 6 and the third gear member 6 mesh with the second interlocking gear member 7, and the third gear member 6 and the fourth gear member 6 mesh with the third interlocking gear member 7, and so on. That is, when any one of the conveying rollers 2 rotates, power is transmitted by the gear train constituted by the gear member 6 and the interlocking gear member 7, and the other conveying rollers 2 also rotate in the same direction.

[0033] In this embodiment, the plurality of conveying rollers 2 are, as shown in Fig. 1(a), one driving roller 10 (roller member) that serves as a power source, and the others are driven rollers 11 (roller members) that rotate freely.

[0034] As shown in FIG. 2, the drive roller 10 has a built-in motor 16, a speed reducer 17, and a circuit board or the like (not shown) inside the roller body 15. The roller body 15 is a metal cylinder with both ends open in the longitudinal direction, and both ends are closed by closing members 19 and 20. The two closing members 19 and 20 are respectively attached with a first fixed shaft 21 (shaft portion, first shaft portion) and a second fixed shaft 22 (shaft portion, second shaft portion). That is, the drive roller 10 has two fixed shafts (the first fixed shaft 21 and the second fixed shaft 22) at both ends in the longitudinal direction of the roller body 15. And each of the two fixed shafts protrudes axially outward at the end in the longitudinal direction of the roller body 15. For this reason, the roller body 15 is located between the portion exposed outside the first fixed shaft 21 and the portion exposed outside the second fixed shaft 22.

[0035] Here, in the drive roller 10 of the present embodiment, the two closing members 19 and 20 are attached to the roller body 15 in a state where they do not rotate relative to each other. And the first fixed shaft 21 and the second fixed shaft 22 are respectively fixed to different closing members 19 and 20 in a state where they do not rotate relative to each other. That is, the two fixed shafts are structured not to rotate relative to the roller body 15 and the two closing members 19 and 20. When the motor 16 operates and the roller body 15 rotates, the two fixed shafts also rotate together.

[0036] Here, in a general roller with a built-in motor, the two fixed shafts are rotatably attached to the closing member via bearings, and are relatively rotatable with respect to the closing member. Therefore, when a general roller with a built-in motor is operated with the two side frames pivotally supported, while the roller body rotates, the two fixed shafts do not rotate. That is, the drive roller 10 of the present embodiment is different from a general roller with a built-in motor in that the two fixed shafts rotate together with the roller body 15 as the motor 16 operates.

[0037] The driven roller 11 of this embodiment also has a cylindrical roller body and two fixed shafts (shaft portions, first shaft portions, second shaft portions) respectively located at both ends of the roller body, and each of the two fixed shafts is fixed to the roller body via a closing member (detailed illustration is omitted). And two closing members are fixed to the roller body in a state where they do not rotate relative to each other, and the fixed shafts are fixed to each of the two closing members in a state where they do not rotate relative to each other. That is, the driven roller 11 also has a structure in which the two fixed shafts do not rotate relative to the roller body and rotate integrally. Therefore, when one fixed shaft of the driven roller 11 rotates, the roller body and the other fixed shaft rotate accordingly. That is, when at least one fixed shaft rotates, the roller body rotates. Among the two fixed shafts, it is sufficient that the fixed shaft to which the above-described gear member 6 is attached has a structure that rotates together with the roller body, and the other fixed shaft may be configured to rotate relative to the closing member.

[0038] As shown in FIG. 1(a), the frame member 3 has an upper frame portion 3a and a lower frame portion 3b. And the frame member 3 is assembled by placing the upper frame portion 3a on the lower frame portion 3b and fixing the upper frame portion 3a and the lower frame portion 3b integrally.

[0039] The upper frame portion 3a has an upper first frame portion 30 (first side frame portion) and an upper second frame portion 31 (second side frame portion) which are a pair of side frames, and a cover member 32. As shown in FIG. 3, the upper first frame portion 30 has a side wall forming portion 35, an upper plate portion 36, and a lower plate portion 37.

[0040] The side wall forming portion 35 is a long member extending in the conveying direction and is a vertical plate-like portion having a thickness in a direction orthogonal to the conveying direction. A plurality of roller mounting portions 38 (frame-side engaging portions) are provided on the side wall forming portion 35. The plurality of roller mounting portions 38 are each formed so as to be arranged in parallel at intervals in the conveying direction.

[0041] The roller mounting portion 38 is a notch groove-shaped portion and is a missing portion formed by a part of the side wall forming portion 35 being missing. That is, the roller mounting portion 38 penetrates the side wall forming portion 35 in the thickness direction.

[0042] The roller mounting portion 38 has a mounting groove portion 40 and a locking portion 41. The mounting groove portion 40 has a width in the conveying direction and is a notch groove-shaped portion extending downward from the upper end of the side wall forming portion 35. In a plan view with the thickness direction of the side wall forming portion 35 as the line-of-sight direction, the outer shape of the mounting groove portion 40 of the present embodiment is substantially rectangular (substantially square). The mounting groove portion 40 of the present embodiment is a groove that is open at the top and extends to a middle portion in the height direction of the side wall forming portion 35. Further, the mounting groove portion 40 has, on its inner peripheral portion, side wall surfaces 40a and 40b that are spaced apart and opposed in the conveying direction, and a lower surface 40c that extends between them.

[0043] Here, the two corner portions that are the boundaries between the mounting groove portion 40 and the upper surface of the side wall forming portion 35 (the boundaries between the side wall surfaces 40a, 40b and the upper surface of the side wall forming portion 35) have a rounded shape. Also, the corner portions located below the mounting groove portion 40 (the corner portions that are the boundaries between the lower surface 40c and the side wall surfaces 40a, 40b) also have a rounded shape.

[0044] The locking portion 41 is constituted by two paired small groove portions 41a. The two small groove portions 41a are respectively formed at positions separated in the conveying direction, and both are missing portions continuous with the mounting groove portion 40 and extend in directions away from each other. Specifically, one small groove portion 41a is a portion continuous with the side wall surface 40a and extends upstream in the conveying direction from the mounting groove portion 40 (side wall surface 40a). And the other small groove portion 41a is a portion continuous with the side wall surface 40b and extends downstream in the conveying direction from the mounting groove portion 40 (side wall surface 40b). Note that the conveying direction is also a direction intersecting the extending direction (vertical direction) of the mounting groove portion 40. Here, the two small groove portions 41a are formed at the same height and are spaced apart and opposed to each other in the conveying direction. That is, the two small groove portions 41a extend in a direction away from each other at an intermediate portion (between the upper end and the lower end of the mounting groove portion 40) in the extending direction of the mounting groove portion 40. In the present embodiment, in a plan view with the thickness direction of the side wall forming portion 35 as the line-of-sight direction, the outer shape of the small groove portion 41a is substantially rectangular (substantially square).

[0045] Both the upper side plate portion 36 and the lower side plate portion 37 are flat plate-like portions and are continuous with the upper end portion and the lower end portion of the side wall forming portion 35, respectively. That is, they are formed by bending the upper end portion and the lower end portion of the side wall forming portion 35 inward. A plurality of upper side plate portions 36 are provided and are arranged in parallel at intervals in the conveying direction. The upper side plate portion 36 is a portion on which the cover member 32 (see Fig. 1(a)) is placed, and mounting holes for attaching the cover member 32 are provided.

[0046] As shown in Fig. 1(a), the upper second frame portion 31 has a side wall forming portion 43, an upper side plate portion 44, and a lower side plate portion 45.

[0047] The side wall forming portion 43 is a long member extending in the conveying direction and is a vertical plate-like portion having a thickness in a direction orthogonal to the conveying direction. The side wall forming portion 43 is different from the side wall forming portion 35 of the upper first frame portion 30 described above in that a shaft hole 43a (shaft insertion hole, see Fig. 6) is provided instead of the roller mounting portion 38 described above. The shaft hole 43a is a hole penetrating the side wall forming portion 43 in the thickness direction and is a hole through which the fixing shaft (second fixing shaft 22) of the conveying roller 2 can be inserted exactly. A plurality of shaft holes 43a are provided and are arranged in parallel at intervals in the conveying direction.

[0048] Both the upper side plate portion 44 and the lower side plate portion 45 are flat plate-like portions and are continuous with the upper end portion and the lower end portion of the side wall forming portion 43, respectively. That is, they are formed by bending the upper end portion and the lower end portion of the side wall forming portion 43 inward. Also, a plurality of upper side plate portions 44 are provided and are arranged in parallel at intervals in the conveying direction.

[0049] As shown in Fig. 1(a), the cover member 32 is a flat plate-shaped member that is placed on the upper plate portion 36 (see Fig. 3) and integrally attached to the upper plate portion 36 via a temporary fastening element or the like. Here, the "temporary fastening element" refers to a type of fastening element that can be removed without being destroyed in principle, such as a screw or a combination of a bolt and a nut. When the cover member 32 is attached to the upper first frame portion 30, as shown in Fig. 1(b), a part of the cover member 32 is arranged at a position adjacent to the upper side of the roller mounting portion 38 and the mounting member 5. Also, as shown in Fig. 1(a), another part of it projects outward (projects in a cantilevered state) in a direction orthogonal to the conveying direction. That is, a part of the cover member 32 is arranged above the gear train formed by the gear member 6 and the interlocking gear member 7 as if it were an eaves.

[0050] As shown in Fig. 1(a), the lower frame portion 3b has a pair of lower first frame portions 47 and a lower second frame portion 48. The lower first frame portion 47 has a vertical wall-shaped lower side wall forming portion 47a and a flat plate-shaped lower mounting plate portion 47b.

[0051] The lower side wall forming portion 47a is a vertical plate-shaped portion having a thickness in a direction orthogonal to the conveying direction. The lower mounting plate portion 47b is a portion continuous with the upper end of the lower side wall forming portion 47a and is formed by bending the upper end portion of the lower side wall forming portion 47a inward. This lower mounting plate portion 47b is the portion on which the upper first frame portion 30 (lower plate portion 37) is placed.

[0052] A plurality of interlocking gear members 7 are rotatably supported on the lower side wall forming portion 47a. As described above, the interlocking gear member 7 is a member disposed between two gear members 6 and transmits the power of one gear member 6 to the other gear member 6. The plurality of interlocking gear members 7 are arranged outside the lower side wall forming portion 47a (outside in the thickness direction) at intervals in parallel. And the rotation axis of each interlocking gear member 7 extends in a direction orthogonal to the conveyance direction. That is, the rotation axis of the interlocking gear member 7 has the same extending direction as the rotation axis of the gear member 6.

[0053] The lower second frame portion 48 also has a standing wall-shaped lower side wall forming portion 48a and a flat plate-shaped lower mounting plate portion 48b. The lower side wall forming portion 48a is a standing plate-shaped portion having a thickness in a direction orthogonal to the conveyance direction, and is arranged so as to be spaced apart and opposed to the above-described lower side wall forming portion 47a. The lower mounting plate portion 48b is a portion continuous with the upper end of the lower side wall forming portion 48a, and is formed by bending the upper end portion of the lower side wall forming portion 48a inward. This lower mounting plate portion 47b is a portion on which the upper second frame portion 31 is mounted.

[0054] Next, the attachment member 5 will be described. In the following description, the conveyance direction is also referred to as the left-right direction, the upstream side in the conveyance direction is also referred to as the left side (leftward), and the downstream side in the conveyance direction is also referred to as the right side (rightward). Further, the direction orthogonal to the conveyance direction is also referred to as the front-rear direction, the outside of the upper first frame portion 30 is also referred to as the front side (frontward), and the inside is also referred to as the rear side (rearward).

[0055] As shown in FIGS. 4 and 5, the attachment member 5 has a main body portion 50 made of synthetic resin and a bearing member 51 integrally formed therewith. The bearing member 51 is a bearing and has a shaft hole 51a (shaft support portion) into which the fixed shaft of the conveyance roller 2 is inserted. This shaft hole 51a is a portion that penetrates the attachment member 5 in the thickness direction.

[0056] The attachment member 5 is a thick plate-shaped member having a thickness in the front-rear direction. In the attachment member 5, the length in the width direction (left-right direction) of the upper portion of the main body portion 50 is shorter than the length in the width direction of the lower portion. The attachment member 5 is provided with two engaging claw portions 55 (attachment-side engaging portions) that face the upper part of the main body portion 50, and an engaging groove portion 56 (attachment-side engaging portion) is provided at the lower part of the main body portion 50.

[0057] Of the two engaging claw portions 55, one is provided near one end (left end) in the left-right direction of the attachment member 5, and the other is provided near the other end (right end) in the left-right direction of the attachment member 5. The engaging claw portion 55 is formed at a position adjacent to the outside (outside in the left-right direction) of the slit portion 60 that extends in the vertical direction. Although not particularly limited, the lower portion of the slit portion 60 has a groove width (length in the left-right direction) that becomes narrower as it goes downward, as shown in FIG. 5.

[0058] One of the engaging claw portions 55 is formed at a position adjacent to the upper side of one side lateral portion 56a (see FIG. 4(b) described in detail later) of the engaging groove portion 56, and the other is formed at a position adjacent to the upper side of the other side lateral portion 56b (see FIG. 4(a) described in detail later) of the engaging groove portion 56. And they are each formed so as to extend in a cantilevered state upward.

[0059] Specifically, the engaging claw portion 55 is a portion where a support plate portion 55a (support portion) and a protrusion portion 55b (locking portion) located at the tip side of the support plate portion 55a are integrally formed, and the tip side can be elastically deformed so as to bend. The support plate portion 55a is a vertical plate-shaped portion having a substantially trapezoidal outer shape in a side view (plan view with the line-of-sight direction as the left-right direction). Specifically, in a side view, the length of the upper portion is shorter than the length of the lower portion. The protrusion portion 55b is a protrusion-shaped (block-shaped) portion where a part is located above the support plate portion 55a and a part protrudes further outside than the outer surface (outer surface in the left-right direction) of the support plate portion 55a. The protrusion portion 55b has an inclined surface portion 63 on the lower side. The inclined surface portion 63 is a surface where the lower end portion is continuous with the upper end portion of the outer surface of the support plate portion 55a, is a downward-facing surface, and is inclined (extends) outward in the left-right direction as it goes upward.

[0060] The engaging groove portion 56 is a groove formed in the peripheral portion on the lower side of the main body portion 50, and is formed between two groove wall forming portions 65 and 66. Here, the lower portion of the main body portion 50 is a portion having a substantially rectangular shape when viewed from the front. And the engaging groove portion 56 and the two groove wall forming portions 65 and 66 extend from one side (left side) in the left-right direction, through the lower side, to the other side (right side) on the other side in the peripheral portion of the lower side of the main body portion 50. That is, they extend across three sides of the periphery.

[0061] That is, the engaging groove portion 56 has a one-side side portion 56a and the other-side side portion 56b respectively located at both ends in the left-right direction, and a lower portion 56c. Here, at the groove bottom portion of the engaging groove portion 56, inclined surfaces 70 are provided at positions that are the boundaries between the one-side side portion 56a and the lower portion 56c and between the other-side side portion 56b and the lower portion 56c (not shown for one side, see Fig. 4(b)). Also, the two groove wall forming portions 65 and 66 are two protruding portions (raised portions). Here, the corner portions respectively located at both ends in the left-right direction in the lower portion of the main body portion 50 have a rounded shape. That is, the outer surfaces located at the protruding ends of the two groove wall forming portions 65 and 66 have a curved surface at the boundary between the portion located on the side and the portion located below, and are continuous through this curved surface.

[0062] From the above, at the groove bottom portion of the engaging groove portion 56, it is a corner portion where the inclined surface 70 is formed, and has a shape such that both end portions in the left-right direction at the lower side are chamfered (C-chamfered). And the two groove wall forming portions 65 and 66 also have a shape such that both end portions in the left-right direction at the lower end side are chamfered (R-chamfered).

[0063] Subsequently, the procedure for supporting the conveying roller 2 on the frame member 3 via the mounting member 5 and assembling the conveyor device 1 will be described. First, a plurality of conveying rollers 2 are attached to the upper first frame portion 30 and the upper second frame portion 31 (see Fig. 1(a)) of the upper frame portion 3a.

[0064] That is, as shown in Fig. 6(a), an attachment member 5 and a gear member 6 are attached to one fixed shaft (first fixed shaft 21) of the conveying roller 2 (first step). Subsequently, the other fixed shaft (second fixed shaft 22) of the conveying roller 2 is inserted into the shaft hole 43a of the upper second frame portion 31 (second step). Specifically, the fixed shaft (first fixed shaft 21) of the conveying roller 2 is inserted into the shaft hole 51a of the attachment member 5. Further, a portion of the fixed shaft (first fixed shaft 21) that protrudes outward from the shaft hole 51a of the attachment member 5 is inserted into the shaft hole of the gear member 6. That is, a portion near the protruding end of the fixed shaft (first fixed shaft 21) serves as a gear fixing portion for attaching the gear member 6. This gear fixing portion is a portion of the fixed shaft that is located outside (outside the portion fitted into the shaft hole 51a) the attachment member 5. In this way, the attachment member 5 and the gear member 6 are attached to this fixed shaft (first fixed shaft 21) in order from the inside.

[0065] Subsequently, as shown in Fig. 6(b), with the attachment member 5 and the gear member 6 attached to the conveying roller 2, the periphery of one end portion of the conveying roller 2 is linearly moved from above downward. Then, as shown in Figs. 7(a) and 7(b), the attachment member 5 is inserted into the attachment groove portion 40 (roller attachment portion 38) from above (third step), and a part of the attachment member 5 enters the attachment groove portion 40. That is, by relatively moving and approaching the attachment member 5 with respect to the roller attachment portion 38, the engagement groove portion 56 (see Fig. 6(b) etc.) of the attachment member 5 is engaged with the attachment groove portion 40.

[0066] When a part of the attachment member 5 enters the attachment groove portion 40, a part of the side wall forming portion 35 adjacent to the attachment groove portion 40 enters the engagement groove portion 56 (see Fig. 4) of the attachment member 5. In other words, a part of the side wall forming portion 35 is sandwiched between two groove wall forming portions 65, 66 (see Fig. 4) from both sides in the thickness direction. At this time, the side wall forming portion 35 may be just fitted between the two groove wall forming portions 65, 66, or a slight gap may be formed between at least one of the groove wall forming portions 65, 66 and the side wall forming portion 35.

[0067] Here, among the mounting members 5, the length L1 in the width direction of the portion where the protrusions 55b are provided is longer than the length L2 in the width direction of the mounting groove portion 40 (see Fig. 7(a)). From this, as shown in Fig. 8(a), when the mounting member 5 is moved downward, the inclined surfaces 63 of the two engaging claw portions 55 come into contact with the corner portions located at the boundary between the mounting groove portion 40 and the upper surface of the side wall forming portion 35. Then, when the mounting member 5 is further moved downward, as shown in Fig. 8(b), the two engaging claw portions 55 are elastically deformed. Specifically, the tip sides of the two engaging claw portions 55 move in a direction approaching each other. That is, the tip side of each engaging claw portion 55 is on the inner side in the width direction (left - right direction) and moves to the adjacent slit portion 60 side.

[0068] Subsequently, when the mounting member 5 is further moved downward, as shown in Fig. 8(c), the two protrusions 55b move away from each other and enter into different small groove portions 41a. That is, the two engaging claw portions 55 are in a state of engaging with the locking portion 41. Furthermore, a part of the side wall forming portion 35 (the portion adjacent to the lower side of the mounting groove portion 40) enters into the lower side portion 56c of the engaging groove portion 56 (see Fig. 4(b)). And the mounting member 5 is in a state of being placed on the lower side surface 40c of the mounting groove portion 40 (see Fig. 3).

[0069] As a result, one fixed shaft (the first fixed shaft 21) of the conveying roller 2 is supported by the frame member 3 (the upper first frame portion 30) via the mounting member 5. In this state, the side wall forming portion 35 is located at positions adjacent to three sides (both sides and the lower side in the width direction) of the periphery of the mounting member 5, and three sides of the mounting member 5 are surrounded by the side wall forming portion 35. And at the three sides of the periphery, the side wall forming portion 35 is sandwiched by the two groove wall forming portions 65, 66 (see Fig. 4), and the engaging groove portion 56 of the mounting member 5 engages with the mounting groove portion 40. In this way, since the two engaging portions composed of the pair of engaging claw portions 55 of the mounting member 5 and the engaging groove portion 56 engage with the mounting groove portion 40 and the locking portion 41 of the frame member 3 at different positions respectively, the mounting member 5 is firmly attached to the frame member 3.

[0070] After supporting all the conveying rollers 2 on the upper first frame portion 30 and the upper second frame portion 31, a cover member 32 is attached to the upper first frame portion 30. In the present embodiment, as described above, since the cover member 32 is positioned above the attachment member 5, rattling of the attachment member 5 during operation of the conveyor device 1 and, consequently, rattling of the gear member 6 can be prevented. Then, the upper frame portion 3a to which the conveying roller 2 and the cover member 32 are attached is placed on the lower frame portion 3b, and the upper frame portion 3a is fixed to the lower frame portion 3b. As a result, the gear member 6 of the upper frame portion 3a meshes with the interlocking gear member 7 of the lower frame portion 3b, and the conveyor device 1 is assembled.

[0071] In the above-described embodiment, the conveyor roller (conveying roller 2) is assumed to have two fixed shafts. That is, one fixed shaft is arranged at each of both ends of the roller body. However, the conveying roller is not limited to this. For example, one fixed shaft may extend through the roller body. In this case, a part of the fixed shaft located at one end portion in the longitudinal direction of the roller body becomes one fixed shaft (shaft portion, first fixed shaft), and a part of the fixed shaft located at the other end portion becomes the other fixed shaft (shaft portion, second fixed shaft).

[0072] In the above-described embodiment, the attachment groove portion 40 has an upwardly open shape, and an example in which the attachment member 5 is inserted from above has been described. However, the present invention is not limited to this. For example, the attachment groove portion may have a downwardly open shape, and the attachment member 5 may be inserted from below. Also, in the above-described embodiment, an example in which one interlocking gear member 7 is arranged between two gear members 6 has been described. However, a plurality of interlocking gear members 7 arranged between two gear members 6 may be provided. For example, three interlocking gear members 7 may be arranged between two gear members 6 to transmit the power of one gear member 6 to the other gear member 6.

[0073] In the above-described embodiment, the support plate portion 55a has a substantially trapezoidal shape in a side view, but the present invention is not limited thereto. For example, the shape in a side view may be substantially rectangular, and inclined surfaces may not be formed at the front end and the rear end. Further, in the above-described embodiment, an example has been described in which the fixed shaft of the conveying roller 2 is supported via the attachment member 5 with respect to the frame member 3 of the conveyor device (conveying device) that conveys the conveyed object in one direction. However, the present invention is not limited thereto. For example, with respect to the frame member of a conveyor device that can selectively convey (move) a conveyed object in any of two directions (a plurality of directions), that is, a so-called transfer device, the fixed shaft of the conveying roller may be supported via an attachment member. Further, the roller member that supports the fixed shaft is not necessarily limited to the conveying roller that forms the conveying surface, and may be, for example, a roller member provided for supplying power to the conveying roller. That is, any member (roller) that includes a roller body and a shaft portion and is supported by the frame of the conveyor device may be used.

[0074] In the above-described embodiment, an example has been described in which the engagement groove portion 56 is one groove that extends across three sides of the periphery, but the present invention is not limited thereto. Any groove formed in one or more portions among the lower side, one side in the left-right direction (left side), and the other side in the left-right direction (right side) may be used. For example, the engagement groove portion may be a groove provided below the attachment member. That is, it may be one groove formed in one of the lower side and both side portions. Further, two grooves provided on both sides in the left-right direction may be used. Furthermore, a groove that extends across one side in the left-right direction and the lower side may be used. That is, it may be one or two grooves formed in two of the lower side and both side portions. However, from the viewpoint of firmly engaging the mounting member with the frame member 3, as described above, it is preferable to form a groove extending across three sides. That is, it is preferable that grooves are formed in three portions: the lower portion, one side in the left - right direction, and the other side in the left - right direction. Note that the groove formed in one of the above - described portions may extend intermittently. That is, the number of grooves provided in one portion may be one or two or more.

[0075] In the above - described embodiment, the mounting member 5 is assumed to have two engaging claw portions 55. Also, the roller mounting portion 38 of the frame member 3 is assumed to have two locking portions 41. However, the present invention is not limited to this. The engaging claw portion 55 of the mounting member 5 and the locking portion 41 of the roller mounting portion 38 do not necessarily have to be provided. That is, without providing the engaging claw portion 55 and the locking portion 41, the engaging groove portion 56 of the mounting member may be engaged with the mounting groove portion 40 of the roller mounting portion, and the mounting member may be attached to the frame member by pressing the mounting member from above with the cover member 32. However, from the viewpoint of more firmly fixing the mounting member to the frame member, it is preferable to adopt the above - described configuration.

Explanation of Reference Numerals

[0076] 1 Conveyor device 2 Conveyor roller (roller member) 3 Frame member 5 Mounting member 6 Gear member 7 Interlocking gear member 10 Driving roller (roller member) 11 Driven roller (roller member) 15 Roller body 21 First fixed shaft (shaft portion, first shaft portion) 22 Second fixed shaft (shaft portion, second shaft portion) 30 Upper first frame portion (first side frame portion) 31 Upper second frame portion (second side frame portion) 32 Cover member 38 Roller mounting portion (frame - side engaging portion) 43a shaft hole (shaft insertion hole) 51 bearing member 51a shaft hole (shaft support portion) 55 engaging claw portion (mounting side engaging portion) 55a support plate portion (support portion) 55b protrusion portion (locking portion) 56 engaging groove portion (mounting side engaging portion)

Claims

【Claim 1】 A conveyor roller mounting structure for mounting the roller member to the frame member via a mounting member in a conveyor device formed by attaching the roller member to the frame member, wherein the frame member has a first side frame portion and a second side frame portion, the first side frame portion has a frame-side engaging portion, the second side frame portion has a shaft insertion hole, the roller member has a roller body and a shaft portion, the shaft portion includes a gear fixing portion to which a gear member is attached, and the shaft portion and the gear member rotate together, the mounting member has a shaft support portion for inserting and supporting the shaft portion, and a mounting-side engaging portion that engages with the frame-side engaging portion, the shaft portion includes a first shaft portion located on one side in the longitudinal direction and a second shaft portion located on the other side, with the second shaft portion inserted into the shaft insertion hole and the first shaft portion inserted into the shaft support portion, and with the roller body and the gear fixing portion located on both sides sandwiching the mounting member, it is possible to insert the mounting member into the frame member from above or below, a conveyor roller mounting structure in which, by inserting into the frame member, the mounting-side engaging portion engages with the frame-side engaging portion, and the first shaft portion is supported by the frame member via the mounting member.

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