JP2019065954A - Driving force carrier - Google Patents

Abstract

To provide a driving force carrier capable of being manufactured easily.SOLUTION: A driving force carrier 11 comprises: a pair of planar first members 14 configured to transmit driving force in a state of engaging with a sprocket 16, and mutually oppositely extending in a direction X; a plurality of bushes 15 arranged at intervals in the direction X between the pair of first members 14, and connecting the pair of first members 14; and a planar second member 13 attached and fixed to the pair of first members 14.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a driving force transmission body to which driving force is transmitted by meshing with a sprocket.

  Conventionally, a pin rack shown in Patent Document 1, for example, is known as this type of driving force transmitting body. Such pin racks include first and second flat steels (first members) each having a plurality of through holes disposed opposite to each other and formed at a predetermined pitch, the through holes of the first flat steel, and A plurality of connection pins in which one end and the other end are respectively inserted into the through holes of the second flat steel, and the first and second flat steels fixed to the gate by a plurality of screw members And a second base member (second member).

  Each base member is provided with two plate portions that form a right angle. That is, each base member has an L-shaped plate shape. Each of the base members is attached to the gate by screw members, one of the two plate portions, and the other is attached to the outwardly projecting end of each flat steel at the connection pin by a snap ring.

  The pin rack meshes with a pinion provided in the gate drive. The gate drive device includes an electric motor and a power transmission mechanism that transmits the driving force of the electric motor to the pinion. The pinion is rotated by the drive of the electric motor and linearly powers the gate through the pin rack to horizontally move the gate. In this case, the pin rack transmits the rotational force of the pinion as a linear moving force to the gate.

JP, 2015-172420, A

  By the way, in the pin rack as described above, the through holes for passing the connection pins through the respective base members and the through holes for passing the screw members so that the respective base members are attached to the connection pins and the gates outside the respective flat steel. And need to form. However, since each base member has an L-shaped plate shape, a dedicated jig, a dedicated machine tool or the like is required to form the through holes as described above in each base member. In addition, each base member is attached to the flat steel via a connection pin. As a result, the manufacturing process of the pin rack becomes complicated, and there is a problem that the manufacturing of the pin rack becomes difficult.

  The present invention has been made in view of the problems existing in such prior art. The object is to provide a driving force transmission body which can be easily manufactured.

Hereinafter, the means for solving the above-mentioned subject and its operation effect are described.
The driving force transmitting body for solving the above-mentioned problems is a driving force transmitting body for transmitting the driving force in a state of meshing with the sprocket, and a pair of flat plate-like first members extending in one direction opposite each other At least one of at least one of a plurality of connecting members arranged so as to be spaced apart in the one direction between the first members and connecting the pair of first members together and a pair of the first members And a flat plate-like second member fixed in a state of being attached to the part.

  According to this configuration, the first member and the second member both have a flat plate shape and the second member is directly attached to the first member without interposing the connecting member, so the driving force transmitting body can be easily made. It can be manufactured.

In the driving force transfer body, it is preferable that the first member has a concave portion into which the second member is press-fitted.
According to this configuration, the second member can be stably attached to the first member by press-fitting the second member into the recess.

The driving force transmitting body preferably includes an adjustment member which is press-fit into the recess together with the second member so as to adjust a press-fit state of the second member into the recess.
According to this configuration, by adjusting the size of the adjustment member, rattling of the second member with respect to the recess can be made substantially zero.

Preferably, in the driving force transmitting body, the second member is attached so as to straddle the pair of first members.
According to this configuration, since the pair of first members are connected not only by the connection member but also by the second member, the overall strength can be improved.

Preferably, in the driving force transmitting body, a plurality of the second members are arranged to be spaced apart in the one direction.
According to this configuration, since the gap is formed between the plurality of second members, weight reduction can be achieved as compared with the case where the gap is not formed between the plurality of second members.

  According to the present invention, the driving force transmitting body can be easily manufactured.

BRIEF DESCRIPTION OF THE DRAWINGS The perspective view which shows the driving force transmission body of one Embodiment. The perspective view which shows the state when a driving force transmission body and a sprocket mesh. Sectional drawing which shows a part of driving force transmission body. The perspective view which shows the connection state of the 1st member and 2nd member in a driving force transmission body. FIG. 3 is a cross-sectional view of FIG. The top view which shows the driving force transmission body of a modification. The top view which shows the driving force transmission body of a modification. The top view which shows the driving force transmission body of a modification. The top view which shows the driving force transmission body of a modification. The top view which shows the driving force transmission body of a modification.

Hereinafter, an embodiment of a driving force transmission body will be described according to the drawings.
As shown in FIGS. 1 and 2, the driving force transfer body 11 is made of, for example, a steel material, and a pin rack portion 12 and a plurality of rectangular flat second members 13 for fixing the pin rack portion 12 to a fixed object K Is equipped. The pin rack portion 12 connects the pair of first members 14 with the pair of rectangular flat plate-like first members 14 extending in parallel to one direction X which is opposed to each other in the width direction Y and orthogonal to the width direction Y A cylindrical bush 15 as an example of a member and a plurality of cylindrical rollers 17 rotatably supported by the plurality of bushes 15 and meshed with the sprocket 16 are provided.

  As shown in FIGS. 1 and 3, in each first member 14, a plurality of circular bush insertion holes 18 are formed so as to pass at equal intervals in one direction X which is the longitudinal direction thereof. . Both end portions of the bushing 15 are non-rotatably fitted in the pair of opposing bush insertion holes 18 in the pair of first members 14 respectively. Therefore, the plurality of bushings 15 are arranged between the pair of first members 14 at the same distance in the one direction X, and connect the pair of first members 14 with each other.

  As shown in FIG.2 and FIG.4, each 1st member 14 has the recessed part 19 by which the 2nd member 13 is pressingly injected. That is, on the end face of each first member 14 on the opposite side to the sprocket 16 side, a plurality of recesses 19 into which the second member 13 is press-fitted together with the adjustment member 20 are formed at equal intervals in one direction X ing. Therefore, a plurality of second members 13 are arranged in the same direction X at equal intervals.

  As shown in FIG. 4, the adjustment member 20 is press-fit into the recess 19 together with the second member 13 to adjust the press-fit state of the second member 13 into the recess 19. In this case, the depth of the recess 19 is set to be about half of the thickness of the second member 13. A pair of first screw holes 21 are formed at intervals in one direction X at an intermediate portion other than both end portions in the bottom surface of each recess 19.

  Second screw holes 22 are formed at one end of the bottom surface of each recess 19. The one second member 13 is press-fit and attached to the pair of concave portions 19 so as to straddle the concave portions 19 of the pair of first members 14 so that the longitudinal direction becomes the width direction Y. In this case, the second member 13 is inserted into the first screw hole 21 at a position corresponding to the first screw holes 21 (four in this example) of the pair of recesses 19 in the central portion in the width direction Y of the second member 13. The first through holes 24 for fixing by the first bolts 23 are respectively formed.

  In the present embodiment, since the first bolt 23 is a hexagonal socket bolt, the first through hole 24 is a stepped hole. Holes 25 for fixing the second member 13 to the object K to be fixed (see FIG. 1) with bolts (not shown) are formed at the four corners of the second member 13, respectively.

  The adjusting member 20 has a rectangular parallelepiped shape, and the length in the thickness direction Z of the second member 13 (the direction orthogonal to both the width direction Y and the one direction X) is the same as the thickness of the second member 13 ing. The length in the width direction Y of the adjustment member 20 is the same as the thickness of the first member 14. A second through hole 27 for fixing the adjusting member 20 to the second screw hole 22 with a second bolt 26 is formed at a position corresponding to the second screw hole 22 in the adjusting member 20.

  In the present embodiment, since the hexagonal socket bolt is adopted as the second bolt 26, the second through hole 27 is a stepped hole. The adjusting member 20 is press-fitted together with the second member 13 into the plurality of recesses 19 one by one.

Next, a method of manufacturing the driving force transmission body 11 will be described.
As shown in FIG. 4, when manufacturing the driving force transmitting body 11, both ends of the bush 15 in a state of being inserted into the roller 17 are respectively inserted into all the facing bush insertion holes 18 of the pair of first members 14. Make it non-rotatable. Subsequently, the second member 13 is placed so as to straddle the pair of facing concave portions 19 in the pair of first members 14. Subsequently, the position of the second member 13 is adjusted so that the positions of the four first screw holes 21 of the pair of facing concave portions 19 and the four first through holes 24 of the second member 13 are aligned.

  Subsequently, the adjusting member 20 is positioned in the gap between the side surface of the pair of opposing recesses 19 and the side surface of the second member 13, and the positions of the second through holes 27 of the adjusting member 20 and the second screw holes 22 of the recess 19 are aligned. As you press each one. In this case, the press-fitting of the adjustment member 20 into the gap between the side surface of the recess 19 and the side surface of the second member 13 is performed in the adjustment member 20 so that the rattle between the recess 19 and the second member 13 is substantially zero. The adjustment is performed while finely adjusting the length of the one direction X by polishing or cutting.

  Furthermore, in this case, the length of the one direction X in the adjusting member 20 which is much smaller and lighter than the length of the second member 13 rather than the length of the one direction X is finely adjusted. For this reason, compared with the case of pressing the second member 13 into the recess 19 while finely adjusting the length of the second member 13 in one direction X by polishing or cutting without using the adjusting member 20, the working efficiency Will be much better.

  Subsequently, in a state where the first bolts 23 are respectively inserted into the four first through holes 24 of the second member 13, the first bolts 23 are respectively screwed into the four first screw holes 21 of the pair of recesses 19. tighten. Subsequently, in a state in which the second bolt 26 is inserted into the second through hole 27 of each adjustment member 20, the second bolt 26 is screwed into and tightened in the two second screw holes 22 of the pair of concave portions 19. As a result, the second member 13 is attached in a state in which the second member 13 straddles the pair of facing concave portions 19 in the pair of first members 14. Similarly, by attaching the second member 13 to all the opposing concave portions 19 in the pair of first members 14, the driving force transfer body 11 is completed.

Next, the operation of the driving force transmission body 11 will be described.
As shown in FIGS. 2 and 5, for example, the driving force transfer body 11 fixes the second member 13 at the hole 25 with a bolt (not shown) to the fixed object K capable of reciprocating linear movement in one direction X; The roller 17 of the pin rack portion 12 extending in one direction X is used in a state of being engaged with the sprocket 16 which can be rotated in both forward and reverse directions about the rotation axis extending in the width direction Y.

  Then, when the sprocket 16 is rotationally driven, the rotational drive force of the sprocket 16 is transmitted by the drive force transfer body 11 to the fixed object K as a linear movement force. On the other hand, when the fixed object K is linearly moved, the linear movement force of the fixed object K is transmitted by the driving force transmitting body 11 to the sprocket 16 as a rotational driving force.

  That is, the driving force transmitting body 11 transmits the rotational driving force of the sprocket 16 rotating about the rotational axis extending in the width direction Y to the fixed object K as a linear moving force in one direction X, or the fixed object The linear movement force of the object K in one direction X is transmitted to the sprocket 16 as a rotational driving force about a rotation axis extending in the width direction Y. That is, the driving force transmitting body 11 transmits the driving force between the sprocket 16 and the fixed object K in a state where the roller 17 is engaged with the sprocket 16 and the second member 13 is fixed to the fixed object K. .

According to the embodiment described above in detail, the following effects are exhibited.
(1) The driving force transmission body 11 is fixed to the fixed object K in a state of being attached to the pair of flat plate-like first members 14 extending in one direction X facing each other and the pair of first members 14 And the second member 13 in the form of a flat plate. For this reason, since both the first member 14 and the second member 13 have a flat plate shape and the second member 13 is directly attached to the first member 14 without the bush 15 between them, a special dedicated jig The driving force transmission body 11 can be easily manufactured (assembled) without requiring a large-sized device or the like.

  (2) In the driving force transmission body 11, the first member 14 has the recess 19 into which the second member 13 is press-fitted. For this reason, the second member 13 can be stably attached to the first member 14 by press-fitting the second member 13 into the recess 19.

  (3) The driving force transfer body 11 includes the adjusting member 20 which is press-fit into the recess 19 together with the second member 13 and can adjust the press-fit state of the second member 13 into the recess 19. Therefore, by adjusting the size of the adjustment member 20, rattling of the second member 13 with respect to the recess 19 can be easily made substantially zero.

  (4) In the driving force transmission body 11, the second member 13 is attached so as to straddle the pair of first members 14. Therefore, since the pair of first members 14 are connected not only by the bush 15 but also by the second member 13, the strength of the driving force transfer body 11 as a whole can be improved.

  (5) In the driving force transmission body 11, a plurality of the second members 13 are arranged in a row at intervals in one direction X. For this reason, since a clearance is formed between the plurality of second members 13, weight reduction can be achieved as compared with the case where the clearance is not formed between the plurality of second members 13.

(Modification example)
The above embodiment may be modified as follows. The following modifications may be combined as appropriate.

  As shown in FIG. 6, in the driving force transfer body 11 of the above embodiment, the portion between the pair of first members 14 in each second member 13 may be omitted. That is, each second member 13 may be divided into two and attached to one of the pair of first members 14 and the other. That is, the second member 13 does not have to be attached so as to straddle the pair of first members 14. The adjusting member 20 may or may not be used.

As shown in FIG. 7, in the driving force transmitting body 11 of FIG. 6, the second member 13 attached to one of the pair of first members 14 may be omitted.
As shown in FIG. 8, in the driving force transmitting body 11 of FIG. 6, the second members 13 separately attached to one and the other of the pair of first members 14 are alternately arranged. May be

  As shown in FIG. 9, in the driving force transfer body 11 of the above embodiment, the second member 13 is formed in a rectangular shape in which the length in one direction X is elongated, and is formed in a rectangular shape long in the one direction X Only one second member 13 may be attached to the pair of first members 14. That is, the plurality of second members 13 does not have to be disposed (plurally attached) in such a manner as to be spaced apart in one direction X with respect to the pair of first members 14. The adjusting member 20 may or may not be used.

  As shown in FIG. 10, in the driving force transfer body 11 of the above embodiment, the second member 13 is formed in a rectangular shape in which the length in one direction X is elongated, and is formed in a rectangular shape long in the one direction X Only one second member 13 may be attached to one of the pair of first members 14. The adjusting member 20 may or may not be used.

The adjusting member 20 may be omitted.
The recess 19 may be omitted.
The depth of the recess 19 may be changed as appropriate.

A cylindrical pin may be adopted as a connecting member instead of the cylindrical bush 15.
The roller 17 may be omitted.
The number and position of the second members 13 attached to the pair of first members 14 may be changed as appropriate.

The intervals between the plurality of second members 13 attached to the pair of first members 14 do not have to be equal intervals, and may be changed as appropriate.
The first member 14 and the second member 13 may have their planar shapes, thicknesses, sizes, materials, and the like changed as appropriate. In this case, since the first member 14 and the second member 13 have a flat plate shape, the availability of the material is remarkably improved as compared with the case where the first member 14 and the second member 13 have a three-dimensional shape such as an L shape. Therefore, the thickness and the size of the first member 14 and the second member 13 can be particularly easily changed.

  11 ... driving force transmission body, 13 ... second member, 14 ... first member, 15 ... bush as an example of connecting member, 16 ... sprocket, 19 ... recessed portion, 20 ... adjusting member, X ... one direction.

Claims (5)

A driving force transmitter for transmitting a driving force in a state of meshing with a sprocket,
A pair of flat plate-like first members extending in one direction facing each other,
A plurality of connecting members arranged so as to be spaced apart in the one direction between the pair of first members and connecting the pair of first members;
A flat plate-like second member fixed in a state of being attached to at least a part of at least one of the pair of first members;
A driving force transmission body characterized by comprising:   The driving force transfer body according to claim 1, wherein the first member has a recess into which the second member is press-fitted.   The driving force transfer body according to claim 2, further comprising: an adjusting member that is press-fit into the recess together with the second member to adjust a press-fit state of the second member into the recess.   The driving force transfer body according to any one of claims 1 to 3, wherein the second member is attached so as to straddle a pair of the first members.   The driving force transmission body according to any one of claims 1 to 4, wherein a plurality of the second members are arranged to be spaced apart in the one direction.