JP2598602Y2 - Bearing holder for roller conveyor - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bearing holder for holding a shaft (roller shaft) of a roller conveyor.

[0002]

2. Description of the Related Art As a bearing holder for a roller conveyor of this kind, the present applicant has previously disclosed in Japanese Patent Application No. 4-57456.
We have proposed a bearing holder that has increased the tightening torque to prevent displacement due to impact and vibration during driving of the conveyor.

FIG. 8 shows a bearing holder disclosed in the above-mentioned Japanese Patent Application No. 4-57456. The bearing holder 1 has a receiving body 5 having a U-shaped shaft drop groove 3 and a receiving body 5. And a fixed part 7 integrally formed on the rear side.

[0004] As shown in FIG. 9, the bearing holder 1 is mounted with a fixing portion 7 inserted into a mounting groove 11 of the conveyor frame 9 and a tightening screw 15 screwed into a screw hole 13 of the fixing portion 7. Since the groove wall 11a of the groove 11 is sandwiched and fixed to the conveyor frame 9, the contact portion of the fixing portion 7 contacting the inner side of the groove wall and the screw head 15 of the tightening screw 15 are provided.
The irregularities 17 are formed on the lower surface a, and the tightening torque is increased by sandwiching the groove wall 11a of the mounting groove 11 between the irregularities 17.

The bearing holder 1 is provided with two convex portions 21 facing the inner side surface of the groove wall 19 forming the shaft drop groove 3 in the depth direction, and the convex portions 21 are provided on the shaft 23 of the conveying roller. When the shaft 23 is held in the shaft drop groove 3 by providing the slit 25 that fits with the shaft 25, the convex portion 21 fits into the slit 25 and the shaft 23 comes off from the bearing holder 1 due to vibration during operation or the like. There is no structure.

[0006]

However, in the conventional roller conveyor of this type, it is necessary to remove the shaft 23 from the bearing holder 1 when repairing or replacing the transport roller.
When the shaft 23 is made of a steel material, the protrusions 21 in the shaft drop-in groove 3 may be worn by repeated insertion and removal of the shaft 23, and the effect of preventing the shaft 23 from being removed may not be obtained.

When the bearing holder 1 is used, it is necessary to control the accuracy of the projections 21 and the slits 25. Further, when the shaft 23 is inserted into the shaft drop groove 3, the impact force of a hammer or the like is required. It has been pointed out that a disadvantage is that the workability is poor because the projection 21 must be fitted into the slit 25.

The present invention has been devised in view of the above circumstances, and provides a bearing holder for a roller conveyor which can easily insert and remove a shaft and can be used by repeatedly inserting and removing a shaft. Aim.

[0009]

In order to achieve the above object, the present invention provides a receiving body having a U-shaped shaft drop groove, and a fixed part integrally formed on the rear side of the receiving body. A roller conveyor fixed to the conveyor frame by sandwiching the groove wall of the mounting groove between the fixing portion inserted into the mounting groove of the conveyor frame and a screw head of a tightening screw screwed into a screw hole of the fixing portion. In the bearing holder for the present invention, an irregular surface is formed on a portion of a fixing portion which abuts on the inner side of the groove wall of the mounting groove of the conveyor frame and a lower surface of the screw head of the tightening screw, respectively . set <br/> only Rutotomoni an engagement portion on the outer surface, and closing the upper opening of the shaft depressed groove
A jaw portion engageable with the locking portion, a groove,
Recesses into which the upper ends of the walls can be fitted, and the front side of each of the recesses
And stoppers alternately arranged on the rear side
A shaft retaining cover made of an elastic resin and having a mounting jig hole into which a wearing jig is inserted is mounted .

[0010]

In order to mount the bearing holder according to the present invention on the conveyor frame, a fixing portion is inserted into the mounting groove of the conveyor frame so that the receiving portion main body is located outside the mounting groove, and is provided on the fixing portion at a predetermined position. Screw a screw into the screw hole.

Thus, when the tightening screw is tightened in this manner,
The groove wall of the mounting groove is sandwiched between the uneven surface provided on the lower surface of the screw head and the uneven surface provided on the fixing portion, so that the bearing holder is fixed at a predetermined position on the conveyor frame.

[0012] Then, plunge the shaft of the conveying roller in the shaft depressed groove receiving portions body of the bearing holder, another
Insert the tip of the prepared mounting jig into the mounting jig hole
After attaching the shaft retaining cover to the mounting jig,
The shaft retaining covers via the jigs
When the jaw is engaged with the locking portion by covering the upper portion of the receiving portion main body , the shaft is held in the shaft drop-in groove by the groove wall and the shaft retaining cover, and the engagement between the locking portion and the jaw is performed. Consolidation
The stopper prevents the shaft retaining cover from falling off.
Is done.

In order to remove the shaft from the bearing holder when repairing or replacing the transport roller, the engagement between the engaging portion and the jaw is released, and the shaft retaining cover is removed from the groove wall. It can be taken out from the groove.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is an overall perspective view of a bearing holder according to an embodiment of the present invention, FIG. 2 is a partial perspective view of a roller conveyor to which the bearing holder is attached, and as shown in FIG. , U-shaped shaft drop groove 31
Receiving portion main body 33 having a fixing portion 35 integrally formed on the rear side of the receiving portion main body 33, a tightening screw 39 screwed into a screw hole 37 of the fixing portion 35, It is composed of an elastic resin shaft retaining cover 43 that can be engaged with the upper end of a groove wall 41 that forms the groove 31. The receiving portion main body 33 and the fixing portion 35 are integrally formed by zinc alloy die casting. .

As described above, the U-shaped shaft drop-in groove 31 is formed in the receiving portion main body 33 by the groove wall 41, and both side surfaces of the groove wall 41 are formed as shown in FIG. A substantially upper half is cut inward, and a locking claw 45 is provided at an upper end thereof outward. A continuous portion 51 formed at a height slightly lower than the opening 49 a of the mounting groove 49 provided in the conveyor frame 47 is formed at the center of the rear surface side of the groove wall 41 of the receiving portion main body 33, The fixing portion 35 is integrally provided via the connecting portion 51.

As shown in FIG. 1, the fixing portion 35 is formed of a plate wider than the receiving portion main body 33, and one side end surface is flush with the side end surface of the receiving portion main body 33 and the height is set to the receiving portion main body 33. The upper and lower portions on the front side are cut out so as to form the same surface as the connecting portion 51. And FIG.
Similarly to the bearing holder 1 shown in FIG. 1, a serrated uneven surface 53 is formed on the vertical surface of the cutout portion.
3, a screw hole 37 is provided penetrating from the front surface to the rear surface of the fixing portion 35.

As shown in FIG. 3, a screw head 39a of a tightening screw 39 screwed into the screw hole 37 has a structure shown in FIG.
As in the case of the tightening screw 15 shown in FIG. 1, a radial uneven surface 55 is formed on the lower surface thereof, and the groove wall 49 b of the mounting groove 49 of the conveyor frame 47 is sandwiched between the uneven surface 55 and the uneven surface 53 of the fixing portion 35. It has become.

In this embodiment, in addition to the above structure, a shaft retaining cover 43 made of an elastic resin and having a jaw 57 which can be engaged with the locking claw 45 is attached to and detached from the upper end of the groove wall 41. It is freely attached.

As shown in FIG. 4, the shaft retaining cover 43 has a jaw 57 that can be engaged with the locking claw 45.
The base member of the arm portion 59 is formed in a round shape with a substantially U-shaped retaining member provided at both ends of the arm 9. On the inner surface of the upper part of the shaft retaining cover 43, a rounded thick portion 63 is formed along the outer shape of the shaft 61 shown in FIG. 2, and on both sides of the thick portion 63, FIG. As shown in FIG. 6, a concave portion 65 into which the upper end of the groove wall 41 fits.
Further, stoppers 67 for preventing the shaft retaining cover 43 from falling off are provided alternately on the front side and the rear side of the concave portion 65.

In FIG. 4, reference numeral 69 denotes a tapered mounting jig hole provided at the center of the thick portion 63, and reference numeral 70 denotes a rod-shaped mounting jig 70 having a tapered tip. Insert the tip of the jig 70 into the mounting jig hole 69 and insert the mounting jig 7
The shaft retaining cover 43 can be inserted into the cover 0.

That is, in order to grip the shaft retaining cover 43 with a fingertip and mount it on the upper end of the groove wall 41, the shaft retaining cover 43 itself is small, and the periphery of the mounting portion is narrow, resulting in poor workability.

Therefore, in order to improve the workability of mounting the shaft retaining cover 43, a plurality of the mounting jigs 70 are prepared, and the front ends of the mounting jigs 70 are respectively attached to the mounting jig holes 69. , And one shaft retaining cover 43 is attached to each mounting jig 70, and then each shaft retaining cover 43 is attached to each groove wall 41 from above through the mounting jig 70. It is designed to engage.

As described above, the substantially upper half of both side surfaces of the groove wall 41 is cut inward, and the locking claws 45 are provided at the upper ends thereof, respectively. Stop claws 4
When the shaft retaining cover 43 is engaged with the groove 5, a gap is formed between the jaw 57 and the side surface of the groove wall 41.

Therefore, in order to remove the shaft retaining cover 43, the tip of the mounting jig 70 is inserted into the mounting jig hole 69.
Insert and remove the shaft retaining cover 43 with the mounting jig 70.
While holding, for example, a removal jig whose tip is shaped like a letter may be locked to the jaw 57 and pulled upward. Since the bearing holder 29 according to the present embodiment is configured as described above, in order to attach the bearing holder 29 to the conveyor frame 47, as shown in FIGS.
The fixing portion 35 is inserted into the mounting groove 49 so that the 3 is located outside the mounting groove 49, and a tightening screw 39 is screwed into a screw hole 37 provided in the fixing portion 35 at a predetermined position.

When the tightening screw 39 is tightened in this manner, the uneven surface 55 provided on the lower surface of the screw head 39a and the uneven surface 53 provided on the fixing portion 35 form the groove wall 49b of the mounting groove 49.
And the bearing holder 29 is moved to the conveyor frame 47.
At a predetermined position.

Then, the shaft 61 of the conveying roller 71 is dropped into the shaft drop groove 31 of the receiving portion main body 33 of the bearing holder 29, and the shaft retaining cover is inserted from above through the mounting jig 70 as shown in FIG. 43 of the receiving body 33
If you ask engaging the jaws 57 claw 45 over the upper, sheet
The upper opening of the shaft drop groove 31
As a result, the shaft 61 is closed in the shaft drop-in groove 31 by the groove wall 41 and the shaft retaining cover 43. At this time, the shaft retaining cover 4
The stopper 67 provided on the shaft 3 prevents the shaft retaining cover 43 from falling off the groove wall 41.

Further, since the shaft retaining cover 43 is formed of an elastic resin material, its removal is extremely easy. Therefore, in order to remove the shaft 61 from the bearing holder 29 at the time of repairing or replacing the transport roller 71, the tip of the mounting jig 70 is inserted into the mounting jig hole 69 as described above.
Hold the shaft retaining cover 43 with the mounting jig 70
Notwithstanding et al., Remove the shaft retainer cover 43 from the groove wall 41 to release the engagement between the locking claws 45 and the jaw 57 by removal jig may retrieve the shaft 61 from the shaft depressed groove 31.

As described above, in the conventional bearing holder 1 shown in FIG. 8, in order to prevent the shaft 23 from coming off, the convex portion 21 is formed in the shaft drop groove 3 of the receiving portion main body 5, and the convex portion 21 is formed. The slit 25 with which the part 21 is engaged
3, when the shaft 23 is inserted into the shaft drop groove 3, the projection 2 is inserted into the slit 25 by the impact force of a hammer or the like.
1, the shaft 23 was held by fitting the shaft 1 in this embodiment. However, in the present embodiment, such a protrusion 21 and the slit 25 were not required, so that the shaft 61 can be inserted and removed very smoothly.
In addition, the shaft retaining cover 4 is attached via the mounting jig 70.
3 can be attached to and detached from the receiving part body 33,
Good workability for mounting and removing the foot retaining cover 43
Accordingly, the efficiency of assembling and replacing the transport roller 71 is improved as compared with the related art. Also, locking claw
For engagement between 45 and jaw 57 and regulation by stopper 67
Therefore, the shaft retaining cover 43 is separated from the receiving portion main body 33.
It does not accidentally come off.

In the present embodiment, the projections 21 as in the prior art are used.
And the slits 25 need not be precisely controlled, and there is no conventional disadvantage that the protrusions 21 are worn out at the time of repairing and replacing the conveying rollers 71 and the effect of preventing the shaft 23 from being removed is obtained. It can be used by repeated insertion and removal.

In addition, in this embodiment, since the receiving portion main body 33 of the bearing holder 29 and the fixing portion 35 connected to the rear side of the receiving portion main body 33 are integrally formed by zinc alloy die casting, moisture, moisture, etc. Of the fixing portion 35
And an uneven surface 5 on the lower surface of the screw head 39a of the tightening screw 39.
3 and 55 are formed, and the mounting grooves 49 are formed by the two uneven surfaces 53 and 55.
Since the groove wall 49a is clamped, there is an advantage that the tightening torque is increased and the lateral displacement of the bearing holder 29 can be prevented.

In the above embodiment, the receiving portion main body 33 of the bearing holder 29 and the fixing portion 35 connected to the rear side of the receiving portion main body 33 are integrally formed by zinc alloy die casting. The molding material of the part is not specified, but is selected according to the application.

[0032]

As described above, according to the bearing holder according to the present invention, it is possible to insert and remove the shaft of the transport roller very easily as compared with the conventional case, and it is also possible to use the mounting jig via the mounting jig.
The shaft retaining cover can be attached to and detached from the receiving part body, and it is narrowly mounted.
Installation and removal work of the shaft retaining cover at the place
In addition to the good performance, the present invention has an advantage that the assembling operation and the exchanging operation of the transport roller can be performed more efficiently than in the past, and the shaft can be repeatedly used for a long period of time. In addition, the engagement between the locking portion and the jaw and the strike
The stopper prevents the shaft retaining cover from receiving
It does not accidentally come off the main unit.

In the bearing holder according to the present invention, an uneven surface is formed on the lower surface of the fixing portion and the screw head of the tightening screw, and the groove wall of the mounting groove is sandwiched between the both uneven surfaces, so that the tightening torque is increased. As a result, there is an advantage that lateral displacement due to a decrease in the tightening torque of the bearing holder can be prevented.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of a bearing holder according to an embodiment of the present invention.

FIG. 2 is a partial perspective view of a roller conveyor to which the bearing holder shown in FIG. 1 is attached.

FIG. 3 is a bottom view of the screw head.

FIG. 4 is a front view of a shaft retaining cover.

FIG. 5 is a bottom view of the shaft retaining cover.

FIG. 6 is a sectional view taken along line VI-VI of FIG. 4;

FIG. 7 is a partial cross-sectional view of a roller conveyor to which the bearing holder shown in FIG. 1 is attached.

FIG. 8 is an overall perspective view of a bearing holder according to the prior application.

FIG. 9 is a partial perspective view of a roller conveyor to which the bearing holder shown in FIG. 8 is attached.

[Explanation of symbols]

 29 Bearing holder 31 Shaft drop groove 33 Receiving part main body 35 Fixing part 39 Tightening screw 39a Screw head 41, 49b Groove wall 43 Shaft retaining cover 45 Locking claw 47 Conveyor frame 49 Mounting groove 53, 55 Uneven surface 57 Jaw 61 Shaft 67 Stopper 71 Transport roller

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) B65G 39/00-39/20 B65G 13/00-13/12

Claims (1)

(57) [Scope of request for utility model registration] 1. A receiving part main body having a U-shaped shaft drop-in groove, and a fixing part integrally formed on a rear side of the receiving part main body, and the fixing part inserted into a mounting groove of the conveyor frame. In a roller conveyor bearing holder, which is fixed to a conveyor frame by sandwiching a groove wall of a mounting groove with a screw head of a tightening screw screwed into a screw hole of a fixing portion, inside a groove wall of the mounting groove of the conveyor frame. to contact screw head lower surface portions and the screw tightening of the fixing unit to form a respective concave-the shaft depressed grooves each groove wall of setting <br/> only an engagement portion on the outer surface Rutotomoni forming a Close the top opening of the shaft drop groove
A jaw portion engageable with the locking portion, a groove,
Recesses into which the upper ends of the walls can be fitted, and the front side of each of the recesses
And stoppers alternately arranged on the rear side
A bearing holder for a roller conveyor, comprising a shaft retaining cover made of an elastic resin and having a mounting jig hole for inserting a wearing jig .