JP2013220907A - Meshing chain type advance-retreat operation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a meshing chain type advance-retreat operation device for attaining stable advance-retreat operation by avoiding abrasion damage and a mechanical loss with a chain guide member by attaining miniaturization, lowering of a floor and space saving by reducing the number of part items such as a driving sprocket and a reduction gear while restraining vibration in the chain longitudinal direction apt to be caused by the advance-retreat operation of a meshing chain.SOLUTION: A meshing chain type advance-retreat operation device includes a pair of meshing chains 110 and 110 for forming a chain rigid part, a chain driving nut 120 for forming a spiral chain driving groove 121 on an inner peripheral surface for forming a hollow chain passage, a hollow motor for rotationally driving the chain driving nut 120, and a chain driving projection 112a formed on an intermediate tooth plate 112 of the meshing chain 110 and engaged with the chain driving groove 121.

Description

  The present invention relates to a meshing chain type advance / retreat operation device that is used for manufacturing equipment in various manufacturing fields, transport equipment in the transportation field, nursing care equipment in the medical welfare field, stage equipment in the art field, etc. .

2. Description of the Related Art Conventionally, a meshing chain type advance / retreat operation device has a meshing chain composed of a hook-shaped inner tooth plate, a hook-shaped outer tooth plate, a connecting pin and a bush, and drives the meshing chain by engaging the bush with a drive sprocket. (For example, refer to Patent Document 1).
Further, an advancing / retracting operation device (for example, Patent Document 2) used as a window opening / closing device having a meshing body attached to the pushbull chain, a winding meshing with the meshing body, and a curved portion for guiding the pushbull chain, There is an advancing / retreating operation device that is used as a window opening / closing device that includes a meshing body mounted on a pushbull chain, a spiral protrusion meshing with the meshing body, and a linear guide part that guides the pushbull chain (for example, Patent Document 3).

JP, 2011-105505, A (refer to a claim and Drawing 2 and Drawing 4). Japanese Patent Laid-Open No. 6-240944 (refer to claims, FIG. 2) Japanese Patent Laid-Open No. 6-240945 (refer to claims, FIG. 2)

  However, in the meshing chain type advance / retreat operation device described in Patent Document 1, vibration is generated in the meshing chain due to an impact generated when the tooth tip of the drive sprocket meshes with the meshing chain, and this vibration is generated in the meshing chain. There has been a problem that there is a possibility that a stable lifting operation may be hindered by propagating to the tip portion in the longitudinal direction of the chain to swing the lifting table.

  In addition, in the above-described meshing chain type advance / retreat operation device, when the motor shaft is directly connected to the speed reducer that drives the drive sprocket, if the motor output torque is increased, the size of the speed reducer increases, and the motor or speed reducer There was a problem that the free placement of the machine was restricted.

  Further, in the advance / retreat operation device described in Patent Document 2, since the pressing force acts only in one direction from the arcuate curved portion that guides the pushbull chain toward the pushbull chain, the pushbull that tends to buckle. There has been a problem that a large mechanical loss (for example, energy loss) occurs due to contact between the chain and the curved portion when the chain is driven, and wear damage is likely to occur in the push-bull chain.

  Further, in the advancing / retreating drive device described in Patent Document 3, a force that presses against the pushable chain from the spiral protrusion toward the linear guide portion acts, so that the pushbull chain that tends to buckle and the linear guide portion are in contact with each other. Accordingly, there has been a problem that the pushbull chain is easily damaged by wear.

  Therefore, the technical problem to be solved by the present invention, i.e., the object of the present invention is to suppress the vibration in the longitudinal direction of the chain, which tends to occur in the forward and backward movement of the meshing chain, and to reduce the number of parts such as a drive sprocket and a speed reducer. The purpose of this invention is to provide a meshing chain type advance / retreat operation device that achieves stable advancement / retraction operation by reducing the size, lowering the floor, and saving space, avoiding wear damage and mechanical loss with the chain guide member. .

  First, a meshing chain type advance / retreat operation device according to the first aspect of the present invention forms a pair of meshing chains that mesh with each other to form an integral chain stiffening portion, and a hollow chain passage through which the chain stiffening portion passes. A chain driving nut having a spiral chain driving groove formed on the inner peripheral surface thereof, a hollow motor provided concentrically with a center line of the chain driving nut and rotationally driving the chain driving nut, and the meshing By providing the chain drive protrusion formed on the chain and engaging with the chain drive groove, the above-described problems are solved.

  The invention according to claim 2 is the meshing chain type advance / retreat operation device according to claim 1, wherein the meshing chain includes a plurality of inner link units each composed of a pair of left and right inner teeth plates in the chain width direction. It is a multi-row chain, and the chain driving protrusion is formed on an outer portion of an intermediate tooth plate disposed between two inner link units adjacent to each other in the chain width direction among the plurality of inner link units. Thus, the above-described problems are further solved.

  The invention according to claim 3 is the meshing chain type advance / retreat operation device according to claim 1 or 2, wherein the pair of meshing chains are meshed with the pair of meshing chains to make the chain rigid. The chain guide unit that guides the pair of meshing chains between the state in which the part is formed is disposed on the apparatus installation surface, and the hollow motor is fixedly installed on the chain guide unit, the problem described above Is a further solution.

  A meshing chain type advance / retreat operation device according to claim 1 of the present invention includes a pair of meshing chains that mesh with each other to form an integral chain stiffening portion, and an inner circumference that forms a hollow chain passage through which the chain stiffening portion passes. A chain drive nut with a spiral chain drive groove formed on the surface, a hollow motor that is provided concentrically with the center line of the chain drive nut and rotationally drives the chain drive nut, and a meshing chain. The chain drive protrusion is engaged with the chain drive groove, so that the output of the hollow motor is transmitted to the chain drive nut as the rotational torque, and the rotational torque transmitted to the chain drive nut is The linearly operated state of the pair of meshing chains by the engagement of the spiral chain driving groove and the chain driving projection of the meshing chain Because it creates smoothly, it can suppress the vibration in the longitudinal direction of the chain, which tends to occur in the conventional movement of the meshing chain, and reduce the number of parts such as drive sprockets and reducers to reduce size and weight. It is possible to achieve flooring and space saving, and since the pressing forces acting on the pair of meshing chains from the chain drive groove cancel each other, the chain stiffening part used in the conventional advance / retreat operation device Stable advance and retreat operation can be achieved by avoiding wear damage and mechanical loss that occur between the chain guide member for holding the push-pull chain and the mechanical loss.

  In addition to the effect of the meshing chain type advance / retreat operation device according to claim 1, the meshing chain type advance / retreat operation device according to claim 2 is an inner link in which the meshing chain is composed of a pair of left and right internal teeth plates. A multi-row chain in which a plurality of units are arranged in the chain width direction, and an intermediate tooth in which the chain driving protrusion is arranged between two inner link units adjacent to each other in the chain width direction among the plurality of inner link units. By forming on the outer part of the plate, the pressing forces acting in opposite directions from the spiral chain drive groove are offset in the center of the chain width direction and stiffened. A pair of meshing chains are securely guided in the longitudinal direction of the chain along the center line of the hollow motor without providing a separate chain guide part in the part. It is possible to forward and backward movement.

  Further, the meshing chain type advance / retreat operation device according to the third aspect of the present invention has, in addition to the effect produced by the meshing chain type advancement / retraction operation device according to the first or second aspect, a state in which the pair of meshing chains are disengaged and a pair of A chain guide unit that guides a pair of meshing chains between the meshing chain and a state where a chain stiffening part is formed is arranged on the device installation surface, and the hollow motor is fixedly installed on the chain guide unit, A pair of meshing chains are driven by a hollow motor fixed to the device installation surface via a chain guide unit, and meshed with a state where the chain guide unit is fixed to the device installation surface to form a chain stiffening portion. The pair of meshing chains can be moved forward and backward stably. Rukoto can.

The perspective view of the meshing chain type advance / retreat operation device according to the present invention. The perspective view which expanded a part of meshing chain type advance / retreat operation device concerning the present invention. The perspective view of a hollow motor and a chain drive nut. Sectional drawing which shows a part of meshing chain type advance / retreat operation apparatus based on this invention. The assembly and disassembled perspective view of a pair of meshing chains. The top view which expanded the meshing chain. The top view which looked at a pair of meshing chain from the upper side.

  The meshing chain type advance / retreat operation device of the present invention has a pair of meshing chains that mesh with each other to form an integral chain stiffening portion, and an inner circumferential surface that forms a hollow chain passage through which the chain stiffening portion passes. A chain drive nut having a chain drive groove formed therein, a hollow motor provided concentrically with the center line of the chain drive nut and for rotating the chain drive nut, and a chain drive formed on the meshing chain. It has a chain drive protrusion that engages with the groove, suppresses vibration in the longitudinal direction of the chain that tends to occur during the forward and backward movement of the meshing chain, and reduces the number of parts such as drive sprockets and reducers to reduce size and weight. If you can achieve flooring and space saving, avoid wear damage and mechanical loss with the chain guide member, and achieve stable advance and retreat operation, Specific embodiments of the may any be any one.

For example, the number of inner link units arranged in parallel in the chain width direction of the meshing chain used in the present invention may be three or more.
In the meshing chain type advance / retreat operation device of the present invention, the chain stiffening direction of the pair of meshing chains may be a vertical direction or a horizontal direction, or may be an oblique direction with respect to the vertical direction or the horizontal direction.
The “outer portion of the intermediate tooth plate” in the meshing chain type advance / retreat operation device of the present invention is the side facing the inner peripheral surface of the chain drive nut in a state where the chain stiffening portion is formed in the end portion of the intermediate tooth plate. Means the part.

  Hereinafter, an interlocking chain type advance / retreat operation device 100 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 7.

  Here, FIG. 1 is a perspective view of the meshing chain type advance / retreat operation device according to the present invention, and FIG. 2 is an enlarged perspective view of a part of the meshing chain type advancement / retraction operation device according to the present invention. FIG. 4 is a perspective view of a hollow motor and a chain driving nut, FIG. 4 is a cross-sectional view showing a part of a meshing chain type advance / retreat operation device according to the present invention, and FIG. FIG. 6 is an exploded perspective view, FIG. 6 is an enlarged plan view of the meshing chain, and FIG. 7 is a plan view of the pair of meshing chains as viewed from above.

  As shown in FIG. 1, the interlocking chain type advance / retreat operation device 100 of this embodiment includes a base frame B installed in a stationary state on the device installation surface G, and is mounted with a driven object (not shown) such as a heavy object. The driven body T to be driven is moved forward and backward in the vertical direction Y while being maintained parallel to the apparatus installation surface G.

  In addition, as shown in FIG. 2, the meshing chain type advance / retreat operation device 100 of this embodiment includes a chain guide unit 150 that guides and stores a chain portion of the pair of meshing chains 110, 110 that are disengaged from each other. ing.

As shown in FIG. 5, the meshing chain 110 used in the meshing chain type advance / retreat operating device 100 of this embodiment includes two inner link units 111 </ b> U composed of a pair of left and right inner tooth plates 111, 111 and two inner links. Two intermediate tooth plates 112 provided between the link units 111U and an external tooth plate 113 arranged outside the two inner link units 111U along the chain width direction W are connected in the longitudinal direction of the chain by connecting pins 114. It is configured by connecting many.
The connecting pin 114 is inserted into a bush 115 that is press-fitted into the internal tooth plate 111.

As shown in FIGS. 1 to 7, the meshing chain type advance / retreat operation device 100 of this embodiment includes a pair of meshing chains 110 and 110 that mesh with each other to form an integral chain rigidizing portion 110G, and a chain rigidizing portion. A chain driving nut 120 in which a spiral chain driving groove 121 is formed on an inner peripheral surface 120S forming a hollow chain passage HP through which 110G passes, and a center line O of the chain driving nut 120 are provided concentrically. A hollow motor 130 for rotationally driving the chain driving nut 120 and a chain driving protrusion 112a formed on the pair of meshing chains 110 described above and engaged with the chain driving groove 121, respectively.
In this embodiment, the center line O of the chain driving nut 120 is arranged so as to be in the same direction as the vertical direction Y in which the driven body T is driven forward and backward while being maintained parallel to the apparatus installation surface G. ing.

  Thus, in this embodiment, the output of the hollow motor 130 is transmitted to the chain driving nut 120 as rotational torque, and the rotational torque transmitted to the chain driving nut 120 is transmitted to the spiral chain driving groove 121. The linear operation state of the pair of meshing chains 110 and 110 is smoothly created by the engagement of the meshing chain 110 with the chain driving protrusion 112a.

Further, as the meshing chain 110 described above, a multi-row chain in which inner link units 111U configured to include a pair of left and right inner tooth plates 111 are arranged in two rows in the chain width direction W is used.
Further, the above-described chain driving protrusion 112a is formed on an outer portion of the intermediate tooth plates 112 and 112 disposed between the two inner link units 111U and 111U adjacent in the chain width direction W.

  As a result, the pressing forces acting on the pair of meshing chains 110 and 110 in the opposite directions from the spiral chain driving groove 121 are offset in the center in the chain width direction W, and the pair of meshing chains 110 and 110 Has become more rigid.

Further, the chain guide unit 150 described above is disposed on the apparatus installation surface G, and the chain rigidized portion 110G is formed by meshing the pair of meshing chains 110, 110 with the pair of meshing chains 110, 110 being disengaged. The pair of meshing chains 110 and 110 are guided between the two states.
The hollow motor 130 described above is fixedly installed on the chain guide unit 150 and is provided concentrically with the center line O of the chain driving nut 120.
As the hollow motor 130 used in this embodiment, a hollow motor disclosed in Japanese Patent Application Laid-Open No. 2007-288870, a Σ-V series (direct drive) hollow motor, which is a product of Yaskawa Electric Co., Ltd., and the like are employed. can do.

  As a result, the pair of meshing chains 110 and 110 are driven by the hollow motor 130 fixed to the apparatus installation surface G via the chain guide unit 150, and are removed from the chain guide unit 150 fixed to the apparatus installation surface G by 150. And the state where the chain stiffening portion 110G is formed by meshing with the above state.

  The meshing chain type advance / retreat operation device 100 of the present embodiment thus obtained includes a pair of meshing chains 110, 110, a chain driving nut 120 in which a spiral chain driving groove 121 is formed, and a chain driving A hollow motor 130 that rotationally drives the nut 120, and a chain driving protrusion 112a that is formed on the intermediate tooth plate 112 of the meshing chain 110 and engages with the chain driving groove 121. Further, the chain guide unit 150 is an apparatus. Since the hollow motor 130 is fixedly installed on the chain guide unit 150 and disposed on the installation surface G, vibration in the longitudinal direction of the chain, that is, the vertical direction Y, which is likely to occur in the forward and backward movement of the meshing chain as in the past, is suppressed. Can reduce the number of parts such as drive sprockets and reducers. It is possible to achieve downsizing, low flooring, and space saving, and it seems that it occurred between the chain guide member and pushbull chain for holding the chain stiffening part used in the conventional advance / retreat operation device Stable advancing and retreating operations can be achieved while avoiding excessive wear damage and mechanical loss.

  A chain driving protrusion 112a is formed on the outer portion of the intermediate tooth plates 112 and 112 disposed between the two inner link units 111U and 111U adjacent to each other along the chain width direction of the meshing chain 110. Accordingly, the pair of meshing chains 110 and 110 are reliably guided along the center line O of the hollow motor 130 in the longitudinal direction of the chain, that is, in the vertical direction Y without providing a separate chain guide part in the chain stiffening portion 110G. The effect is enormous, such that the driven body T can be stably advanced and retracted.

DESCRIPTION OF SYMBOLS 100 ... Engagement chain type advance / retreat operation device 110 ... Engagement chain 110G ... Chain stiffening part 111 ... Inner tooth plate 111U ... Inner link unit 112 ... Intermediate tooth plate 112a ... Chain Drive protrusion 113 ・ ・ ・ External tooth plate 114 ・ ・ ・ Connecting pin 115 ・ ・ ・ Bush 120 ・ ・ ・ Chain drive nut 120 </ b> S ・ ・ ・ Inner peripheral surface of chain drive nut 121 ・ ・ ・ Chain drive groove 130 ・ ・ ・ Hollow motor 150 ・ ・ ・ Chain guide unit HP ・ ・ ・ Hollow chain passage W ・ ・ ・ Chain width direction Y ・ ・ ・ Vertical direction O ・ ・ ・ Center line T ・ ・ ・ Driven body B ・ ・・ Base frame G ・ ・ ・ Equipment installation surface

Claims (3)

A pair of meshing chains that mesh with each other to form an integral chain stiffening portion;
A chain driving nut in which a spiral chain driving groove is formed on an inner peripheral surface forming a hollow chain passage through which the chain stiffening portion passes;
A hollow motor that is provided concentrically with a center line of the chain driving nut and that rotates the chain driving nut;
A meshing chain type advance / retreat operation device comprising a chain driving protrusion formed on the meshing chain and engaged with the chain driving groove. The meshing chain is a multi-row chain in which a plurality of inner link units composed of a pair of left and right inner tooth plates are arranged in the chain width direction,
The chain driving protrusion is formed on an outer portion of an intermediate tooth plate disposed between two inner link units adjacent to each other in the chain width direction among the plurality of inner link units. The interlocking chain type advance / retreat operation device according to claim 1. A chain guide unit that guides the pair of meshing chains between a state in which the pair of meshing chains are disengaged and a state in which the pair of meshing chains are meshed to form a chain stiffening portion is disposed on the apparatus installation surface. ,
The meshing chain type advance / retreat operation device according to claim 1 or 2, wherein the hollow motor is fixedly installed on the chain guide unit.

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