JP5220802B2 - Engagement chain type advance / retreat unit - Google Patents

Description

  The present invention relates to an advancing / retreating unit that drives an operation target such as a sliding door to advance / retreat, and more particularly to an engagement chain type advance / retreat operation unit that employs an engagement chain as a drive medium for advancement / retraction operation.

2. Description of the Related Art Conventionally, as an advance / retreat operation device, a device that operates an object to be operated by driving an operation part composed of a pair of belt members so as to be able to advance and retreat (for example, refer to Patent Document 1 and Patent Document 2), And a rigid columnar member that is driven back and forth to actuate an actuated object (for example, see Patent Document 3).
In addition, there is a meshing chain lifting device that transports an object to be lifted up and down using the meshing chain as a drive medium (see, for example, Patent Document 4).

Japanese Patent Laid-Open No. 10-1291 (paragraph [0013], FIG. 2) Japanese Patent Laid-Open No. 10-17596 (paragraph [0038], FIG. 14) JP-A-10-78095 (paragraph [0038], FIG. 5) JP 2009-1398 A (Claims, FIG. 1)

However, in the advancing / retreating device disclosed in Patent Document 1, the input shaft for supplying power to the circular feeding body intersects with this feeding body, so that the thickness direction of the advancing / retreating operation device, that is, the thickness direction of the feeding body. There has been a problem that it is difficult to reduce the size of the device along.
Also, the advance / retreat operation device disclosed in Patent Document 2 has a problem that it is difficult to reduce the device size in the thickness direction of the advance / retreat operation device, as in Patent Document 1.
Further, the advance / retreat operation device disclosed in Patent Document 3 requires a restricting member that maintains a rigid state of the pair of chains, so that it is difficult to avoid an increase in the number of parts and to reduce the size of the device. There was a problem.
In addition, in the advancing / retreating device disclosed in Patent Document 3, the drive medium is not a meshing chain but a band, that is, a chain that is prevented from being bent by a restricting member, so that the rigid state is maintained with only a pair of chains. It is difficult to actuate the actuated object, and rattling that occurs in a pair of rigid chains, that is, to avoid vibration, to reduce the vibration noise of the meshing chain and to smoothly run the meshing chain. There was a problem that it became difficult.

Further, in the meshing chain type lifting device disclosed in Patent Document 4, since the drive motor is arranged in a region away from the sprocket along the virtual plane direction including the sprocket, the component arrangement region on the base plate is effectively used. At the same time, there is a problem that it is difficult to reduce the size of the apparatus.
In addition, in the meshing chain type lifting device disclosed in Patent Document 4, when the sprocket is driven via a linear motion unit fixedly arranged on the base plate including the ball screw, the ball screw is connected to one end of the ball screw. Since the length of the drive source including the drive motor and the reduction gear is substantially equal to the size of the entire components, it is difficult to reduce the size of the drive source to reduce the size of the entire device. There is a troublesome layout problem that the installation space of the source must be secured on the base plate.

  Further, in the mesh chain type lifting device disclosed in Patent Document 4, a drive source such as a drive motor is disposed in a region away from the sprocket along the virtual plane direction including the sprocket. There is a problem that it is difficult to avoid an increase in labor for accurately positioning a drive source and the like at the time of mounting a sprocket driven by the motor.

  Therefore, the technical problem to be solved by the present invention, that is, the object of the present invention is to reduce the size of the unit by effectively using the space in the unit and at the same time maintain the rigid state of the pair of meshing chains. An object of the present invention is to provide a meshing chain type advance / retreat operation unit that realizes reduction of chain drive noise during driving and smooth chain driving while avoiding an increase in labor when a drive source is attached.

  According to the first aspect of the present invention, a pair of meshing chains which are driven to be movable forward and backward by being stiffened integrally in a state where they are meshed with each other and arranged to face each other, and can be separated from each other so as to be branched are mutually branched. A chain guide plate provided with a chain guide groove for guiding and storing the meshing chain, a chain guide groove connected to the chain storage groove and guiding a pair of meshing chains to a rigid position, and the chain guide plate And a drive sprocket that is housed in a concave drive sprocket housing groove formed on the side of the meshing chain and engages with one of the pair of meshing chains so as to drive the pair of meshing chains forward and backward. And an interlocking chain type advance / retreat operation unit comprising a driving source for supplying driving force to the driving sprocket, the driving sprocket A rocket and a chain guide plate are provided in a virtual plane including a rigid direction and a branch direction of the pair of meshing chains, and the drive source is shifted from the virtual plane along the thickness direction of the chain guide plate. The above-mentioned problem is solved by being fixedly disposed on the chain guide plate and the drive shaft of the drive source being disposed along the chain guide plate and connected to the drive sprocket via an orthogonal gear. It is a thing.

  According to a second aspect of the present invention, in addition to the configuration according to the first aspect, the drive sprocket housing groove opens at a rigid position of the pair of meshing chains, thereby solving the above-described problem. Is.

  According to a third aspect of the present invention, in addition to the configuration according to the first or second aspect, the size of the drive source along the branch direction is smaller than the size of the chain guide plate along the branch direction. Thus, the above-mentioned problem is solved.

  According to a fourth aspect of the present invention, in addition to the configuration according to any one of the first to third aspects, the drive source includes a drive motor that drives the drive shaft, and a rotational speed of the drive shaft. The above-described problem is solved by providing a speed reducer that decelerates the motor.

According to the engagement chain type advance / retreat operation unit of the present invention according to claim 1, the engagement chain type advance / retreat operation unit is driven to be freely advanced / retracted by being stiffened integrally in a state of being opposed to each other and being disengaged from each other to be freely branched. A pair of meshing chains, a chain storing groove for guiding and storing the meshing chains branched from each other, and a chain guiding groove connected to the chain storing groove to guide the pair of meshing chains to a rigid position are provided. A chain guide plate and a grooved drive sprocket receiving groove formed on the chain guide plate and opening to the side of the meshing chain are accommodated and engaged with one of the pair of meshing chains. By having a drive sprocket that can be driven forward and backward, and a drive source that supplies drive force to the drive sprocket, The pair of meshing chains maintain their rigidity with only the pair of meshing chains, and at the same time avoid the number of parts, guide the pair of meshing chains in the rigid and branch directions, and rigidly actuate the object to be operated that is fixedly connected to the ends of the pair of meshing chains. The chain guide plate and the drive sprocket occupy more space than the case where the drive sprocket is installed in the unit without being housed in the drive sprocket storage groove. Not only can the unit be reduced in size along the thickness direction of the drive sprocket, but the following specific effects can be achieved.
In other words, according to the meshing chain type advance / retreat operation unit according to the first aspect of the present invention, the drive sprocket and the chain guide plate are provided in a virtual plane including the rigid direction and the branching direction of the pair of meshing chains. For the drive sprocket and chain guide plate, which avoids an increase in the installation space for the drive sprocket and chain guide plate that are generated by disposing the sprockets in the thickness direction. The unit can be further miniaturized by avoiding an increase in unit size along the thickness direction of the sprocket.
Furthermore, according to the meshing chain type advance / retreat operation unit according to claim 1, the drive source is fixedly arranged on the chain guide plate at a position shifted from the virtual plane along the thickness direction of the chain guide plate. Since the relative position of the drive source and the drive sprocket is accurately positioned when the drive source is attached to the sprocket for use, it is possible to avoid an increase in labor for accurately positioning the drive source when the drive source is attached.
Further, according to the meshing chain type advance / retreat operation unit according to the present invention, the drive shaft of the drive source is arranged along the chain guide plate and connected to the drive sprocket via the orthogonal gear. Compared with the case where the drive shaft of the drive source intersects the drive sprocket, the drive source is fixedly arranged on the chain guide plate along the thickness direction of the drive sprocket so as to be closer to the length of the drive shaft. The unit can be further reduced in size along the thickness direction of the sprocket.

  According to the meshing chain type advance / retreat operation unit according to claim 2, in addition to the effect exerted by the meshing chain type advance / retreat operation unit according to claim 1, the drive sprocket housing groove has a rigid position of the pair of meshing chains. Because of the opening, the occurrence of vertical movement (pulsation), vibration, noise, and speed fluctuations due to the chordal action between the meshing chain and the drive sprocket is avoided. Can be further reduced and stable chain drive can be realized.

  According to the mesh chain type advance / retreat operation unit according to claim 3, in addition to the effect produced by the mesh chain type advance / retreat operation unit according to claim 1 or 2, the size of the drive source along the branch direction is Because the size of the chain guide plate along the branching direction is smaller than that of the chain guide plate along the branching direction, a sufficient installation space for the drive source is secured within the area smaller than the size of the chain guide plate along the branching direction. Thus, the unit can be further reduced in size.

  According to the mesh chain type advance / retreat operation unit according to claim 4, in addition to the effect produced by the mesh chain type advance / retreat operation unit according to any one of claims 1 to 3, the drive source is a drive shaft. Since the drive sprocket is driven without installing a synchronous gear between the drive motor and the drive sprocket, a drive motor that drives the drive and a speed reducer that reduces the rotational speed of the drive shaft The increase in the number of points can be avoided to further reduce the size of the unit, and the rotation of the drive motor and the drive sprocket can be avoided during the assembly of the unit to achieve smooth running of the meshing chain.

1 is an overall perspective view of a meshing chain type advance / retreat operation unit that is an embodiment of the present invention. The top view of the meshing chain type advance / retreat operation unit which is one Example of this invention. The front view of the meshing chain type advance / retreat operation unit which is one Example of this invention. The rear view of the meshing chain type advance / retreat operation unit which is one Example of this invention. FIG. 5 is a partially enlarged view of the vicinity of the drive sprocket and the meshing chain shown in FIG. 4. The perspective view which shows the disassembled assembly state of a meshing chain, and the disengagement state.

  The meshing chain type advance / retreat operation unit of the present invention is mutually rigid with a pair of meshing chains that are meshed with each other and arranged to face each other, and can be disengaged from each other so as to be able to branch to each other. Chain guide plate provided with a chain guide groove for guiding and storing the branched mesh chain and a chain guide groove connected to the chain storage groove to guide the pair of mesh chains to a rigid position, and the chain guide plate A drive sprocket which is formed in a concave drive sprocket housing groove formed on the side of the meshing chain and which engages with one of the pair of meshing chains so as to drive the pair of meshing chains so as to advance and retract. A drive source for supplying driving force to the drive sprocket, and the drive sprocket and chain guide And the drive source is fixedly disposed on the chain guide plate at a position shifted from the virtual plane along the thickness direction of the chain guide plate. The drive shaft of the power source is arranged along the chain guide plate and connected to the drive sprocket via the orthogonal gear, and the rigid state is maintained only by the pair of meshing chains and at the same time fixed to the ends of the pair of meshing chains. The chain guide plate and the drive sprocket are compared to the case where the connected target is operated so as to be able to move forward and backward and smooth chain drive is achieved, and the drive sprocket is not housed in the drive sprocket storage groove. The space occupied by the whole is reduced, the unit is downsized, and the drive sprocket The unit is further reduced in size by avoiding an increase in the unit size along the direction of the drive, avoiding an increase in labor for positioning the drive source with accuracy when the drive source is installed, and the unit along the thickness direction of the drive sprocket. As long as the size is further reduced, any specific embodiment may be used.

And the meshing chain type advance / retreat operation unit of the present invention has no problem in the advance / retreat operation even if the installation surface is a floor surface in a stationary installation form or a ceiling surface in a suspended installation form, Even if it is a vertical wall surface in a cantilever support form, there is no hindrance to the advance / retreat operation.
In addition, the meshing chain type advance / retreat operation unit of the present invention is installed so that the rigid direction of the pair of meshing chains is perpendicular to the installation surface, and the actuated object such as a sliding door is operated in a vertical direction so as to freely advance and retract. Alternatively, the pair of meshing chains may be installed such that the rigid direction of the pair of meshing chains is horizontal with respect to the installation surface, and the operation target such as a sliding door may be operated to move forward and backward in the horizontal direction.
And when operating the actuated object such as a sliding door by the meshing chain type advance / retreat operation unit of the present invention, the thickness and length of the entire switchgear including the meshing chain type advancement / retraction operation unit of the present invention and the flat sliding door The entire size of the switchgear may be reduced by reducing the size.

  Further, the pair of meshing chains used in the meshing chain type advance / retreat operation unit of the present invention may be, for example, one single row in the chain width direction or two or more double rows in the chain width direction. However, when adopting two or more double rows in the chain width direction, the hook-like external tooth plate and the hook-like internal tooth plate that constitute one of the pair of meshing chains, The chain of the meshing chain is engaged with the hook-shaped outer tooth plate and the hook-shaped inner tooth plate constituting the other meshing chain opposite to each other in a chain-like manner in the form of multiple hooks in the chain width direction. This is more preferable because buckling that tends to occur in the width direction can be reliably suppressed and excellent chain durability can be realized.

  In addition, the pair of meshing chains used in the meshing chain type advance / retreat operation unit of the present invention may be any one not having a roller, i.e., having only a bush, having a roller, etc. When the one having only the bush is adopted, the number of chain parts is reduced, and the weight of the chain can be reduced.

Hereinafter, an interlocking chain type advance / retreat operation unit 100 according to an embodiment of the present invention will be described with reference to the drawings.
Here, FIG. 1 is an overall perspective view of a meshing chain type advance / retreat operation unit according to an embodiment of the present invention, and FIG. 2 is a plan view of the meshing chain type advance / retreat operation unit according to an embodiment of the present invention. FIG. 3 is a front view of a meshing chain type advance / retreat operation unit according to an embodiment of the present invention, and FIG. 4 is a rear view of the meshing chain type advance / retreat operation unit according to an embodiment of the present invention. FIG. 5 is a partially enlarged view of the vicinity of the driving sprocket and the meshing chain shown in FIG. 4, and FIG. 6 is a perspective view showing an exploded assembly state and a disengaged state of the meshing chain.

  First, as shown in FIG. 1, a meshing chain type advance / retreat operation unit 100 according to an embodiment of the present invention has a pair of meshing chains fixedly connected to an operation target such as a sliding door at the ends of a pair of meshing chains 110. 110 is installed to move the operated object forward and backward in the rigid direction of 110.

As shown in FIGS. 1 to 5, the meshing chain type advance / retreat operation unit 100 of this embodiment is rigidized integrally in a state of being meshed with each other and opposed to each other, and can be separated from each other to be freely branched. A pair of meshing chains 110 that are driven to move forward and backward, a chain housing groove 121 that guides and houses the meshing chains 110 that are branched from each other, and the pair of meshing chains 110 that are connected to the chain housing groove 121 are rigid. A chain guide plate 120 provided with a chain guide groove 122 for guiding to a position, and a concave drive sprocket housing groove 123 formed in the chain guide plate 120 and opening to the side of the meshing chain 110 are accommodated. At the same time, it engages with one of the pair of meshing chains 110 to drive the pair of meshing chains 110 so that they can move forward and backward. The drive sprocket 130 and the drive source 140 for supplying drive force to the drive sprocket 130 are provided as a basic device configuration, and the rigid state is maintained only by the pair of meshing chains 110, and at the same time, the number of parts is avoided. To guide the pair of meshing chains in the rigid direction and the branching direction, and to move the actuated object such as a sliding door fixedly connected to the ends of the pair of meshing chains 110 so as to be able to move forward and backward, and to realize smooth chain drive. Compared with the case where the sprocket 130 for driving is not housed in the driving sprocket housing groove 123 and is installed in the unit, the space occupied by the chain guide plate 120 and the entire driving sprocket 130 is reduced and the unit is miniaturized. .
Furthermore, in the meshing chain type advance / retreat operation unit 100 of the present embodiment, as shown in FIG. 2, the drive sprocket 130 and the chain guide plate 120 are in a virtual plane S including the rigid direction and the branching direction of the pair of meshing chains 110. By being provided, an increase in installation space for the chain guide plate 120 and the drive sprocket 130 caused by being arranged at positions displaced from each other along the thickness direction of the drive sprocket 130 is avoided and the inside of the unit is avoided. Therefore, the unit can be further reduced in size by avoiding an increase in unit size along the thickness direction of the drive sprocket 130.

  Furthermore, in the meshing chain type advance / retreat operation unit 100 of the present embodiment, as shown in FIG. 2, the drive source 140 is fixed to the chain guide plate 120 at a position shifted from the virtual plane S along the thickness direction of the chain guide plate 120. Since the relative positions of the drive source 140 and the drive sprocket 130 are accurately positioned when the drive source 140 is attached to the drive sprocket 130 via the orthogonal gear 150, the meshing chain type advance / retreat operation unit is arranged. 100 avoids an increase in labor for positioning the drive source 140 with high accuracy when the drive source 140 is attached.

  Further, in the meshing chain type advance / retreat operation unit 100 of the present embodiment, the drive shaft 141 of the drive source 140 is disposed along the chain guide plate 120 and connected to the drive sprocket 130 via the orthogonal gear 150. As a result, the drive source 140 is moved closer to the length of the drive shaft 141 along the thickness direction of the drive sprocket 130 than when the drive shaft 141 of the drive source 140 intersects the drive sprocket 130. Therefore, the width W of the meshing chain type advance / retreat operation unit 100 is narrowed along the thickness direction of the drive sprocket 130, so that it is made thinner and smaller.

  Further, in the meshing chain type advance / retreat operation unit 100 of the present embodiment, as shown in FIG. 5, the drive sprocket housing groove 123 is opened at the rigid position of the pair of meshing chains 110, so that the meshing chain 110 and the driving chain are driven. The vertical movement (pulsation), vibration, noise, and speed fluctuations caused by the cordal action between the sprockets 130 are avoided, so that the meshing chain 110 advancing / retreating operation unit 100 generates vibration noise of the meshing chain 110 when the chain is driven. Further reduction and stable chain drive are realized.

  Further, in the meshing chain type advance / retreat operation unit 100 of this embodiment, as shown in FIG. 2, the size of the drive source 140 along the branching direction of the pair of meshing chains 10 is the size of the chain guide plate 120 along the branching direction. That is, since the space is smaller than the length L, the installation space for the drive source 140 is sufficiently secured in the region smaller than the size of the chain guide plate 120 along the branch direction. The internal space is effectively used to further reduce the size.

  Further, in the meshing chain type advance / retreat operation unit 100 of this embodiment, as shown in FIGS. 2 to 5, the drive source 140 is a deceleration that reduces the rotational speed of the drive motor 142 and the drive shaft 141 that drive the drive shaft 141. Since the drive sprocket 130 is driven via the rotary shaft 131 without installing a synchronous gear between the drive motor 142 and the drive sprocket 130, the meshing chain type advance / retreat operation unit is provided. 100 avoids an increase in the number of parts, downsizes the unit, and avoids rotation adjustment of the drive motor 143 and the drive sprocket 130 when the unit is assembled, thereby realizing smooth running of the meshing chain 110. .

  Further, as shown in FIG. 6, the pair of meshing chains 110 used in the meshing chain type advance / retreat operation unit 100 of this embodiment is a so-called chuck chain, and includes an internal tooth plate 111 having a hook portion. The outer tooth plate 112 that overlaps the inner tooth plate 111 by a half pitch in the chain longitudinal direction and has a hook portion, the bush 113 that connects and fixes the inner tooth plates 111 in the chain width direction, and the bush 113 And a coupling pin 115 for coupling and fixing the external tooth plates 112 in the chain width direction, and while mutually deflecting from the branch direction to the rigid direction along the chain guide plate 120. It moves forward and backward in a self-supporting state and is deflected from the rigid direction to the branch direction. It is arranged to branch off bite each other.

  Then, the internal tooth plate 111 and the external tooth plate 112 constituting one of the pair of meshing chains 110 are chained with respect to the internal tooth plate 111 and the external tooth plate 112 constituting the other meshing chain 110 opposed thereto. Engagement chain 110 is configured to engage in multiple hooks, so-called chucks, in multiple and strong directions across multiple rows in the width direction, and move forward and backward in a self-supporting state while supporting all loads including the operation target. Even when an unbalanced load is applied to one side in the chain width direction, buckling that tends to occur in the chain width direction of the overloaded meshing chain 110 is reliably suppressed to ensure excellent chain durability. It is designed to avoid accidental chain breaks.

  The interlocking chain type advance / retreat operation unit 100 of this embodiment obtained in this way is driven to be freely movable forward and backward by being stiffened integrally in a state of being engaged with each other and opposed to each other, and being disengaged from each other so that it can be branched. A pair of meshing chains 110, a chain housing groove 121 for guiding and housing the meshing chains 110 branched from each other, and a chain connected to the chain housing groove 121 to guide the pair of meshing chains 110 to a rigid position. A chain guide plate 120 provided with a guide groove 122, and a pair of meshing chains which are accommodated in a concave drive sprocket housing groove 123 formed in the chain guide plate 120 and opened to the side of the meshing chain 110. 110, a drive shaft which engages with one of the 110 and drives the pair of meshing chains 110 to move forward and backward. A rocket 130 and a driving source 140 that supplies driving force to the driving sprocket 130 are provided as basic device configurations, and the driving source 140 is shifted from the virtual plane S along the thickness direction of the chain guide plate 120. A pair of meshing is provided by being fixedly disposed on the chain guide plate 120 and the drive shaft 141 of the drive source 140 being disposed along the chain guide plate 120 and connected to the drive sprocket 130 via the orthogonal gear 150. The chain 110 is maintained in its rigid state only, and at the same time, the driven object fixedly connected to the ends of the pair of meshing chains 110 is operated to move forward and backward in the rigid direction, and at the same time, smooth chain drive is realized. Is installed in the unit without being housed in the drive sprocket housing groove 123. Compared to the case where the chain guide plate 120 and the drive sprocket 130 occupy the entire space, the size of the unit can be reduced, and an increase in time required for positioning the drive source 140 with high accuracy when the drive source 140 is attached is avoided. The effect is enormous, for example, the width W of the unit can be reduced along the thickness direction of the drive sprocket 130 to further reduce the size.

DESCRIPTION OF SYMBOLS 100 ... Meshing chain type advance / retreat operation unit 110 ... Meshing chain 111 ... Hook-shaped inner tooth plate 112 ... Bush 113 ... Inner link unit 114 ... Hook-shaped outer tooth plate 115 ... Connecting pin 120 ... Chain guide plate 130 ... Drive sprocket 131 ... Rotating shaft 140 ... Drive source 141 ... Drive shaft 142 ... Drive motor 143 ... Reducer 150 ... Orthogonal gear L: Length of meshing chain type advance / retreat operation device 100 S: Virtual plane including rigid direction and branching direction of a pair of meshing chains W: Width of meshing chain type advance / retreat operation device 100

Claims (4)

A pair of meshing chains that are driven to be movable forward and backward by being engaged with each other and stiffening together in a state of being opposed to each other and being disengaged from each other so as to be branched, and a meshing chain branched from each other are guided and stored. A chain guide plate provided with a chain storage groove and a chain guide groove connected to the chain storage groove to guide the pair of meshing chains to a rigid position; and a side of the meshing chain formed in the chain guide plate A drive sprocket that is housed in a concave drive sprocket housing groove that opens in the direction and engages one of the pair of meshing chains so as to drive the pair of meshing chains forward and backward, and a driving force applied to the drive sprocket. An interlocking chain type advance / retreat operation unit having a drive source for supplying
The drive sprocket and the chain guide plate are provided in a virtual plane including a rigid direction and a branch direction of the pair of meshing chains;
The drive source is fixedly disposed on the chain guide plate at a position shifted from the virtual plane along the thickness direction of the chain guide plate;
A meshing chain type advance / retreat operation unit, wherein a drive shaft of the drive source is disposed along the chain guide plate and is connected to a drive sprocket via an orthogonal gear.   2. The meshing chain type advance / retreat operation unit according to claim 1, wherein the drive sprocket housing groove opens at a rigid position of the pair of meshing chains.   The meshing chain type advance / retreat operation unit according to claim 1 or 2, wherein a size of the drive source along the branch direction is smaller than a size of the chain guide plate along the branch direction. The said drive source is provided with the drive motor which drives the said drive shaft, and the reduction gear which decelerates the rotational speed of the said drive shaft, The Claim 1 characterized by the above-mentioned. Meshing chain type advance / retreat unit.

Images