CN112799342A - Base plate for programmable controller and programmable controller system - Google Patents
Base plate for programmable controller and programmable controller system Download PDFInfo
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- CN112799342A CN112799342A CN202011064221.7A CN202011064221A CN112799342A CN 112799342 A CN112799342 A CN 112799342A CN 202011064221 A CN202011064221 A CN 202011064221A CN 112799342 A CN112799342 A CN 112799342A
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- base plate
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- 238000010168 coupling process Methods 0.000 abstract description 10
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/054—Input/output
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/18—Packaging or power distribution
- G06F1/183—Internal mounting support structures, e.g. for printed circuit boards, internal connecting means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
- H01R12/50—Fixed connections
- H01R12/51—Fixed connections for rigid printed circuits or like structures
- H01R12/52—Fixed connections for rigid printed circuits or like structures connecting to other rigid printed circuits or like structures
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/10—Plc systems
- G05B2219/11—Plc I-O input output
- G05B2219/1114—Address by module name
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Automation & Control Theory (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Human Computer Interaction (AREA)
- General Engineering & Computer Science (AREA)
- Programmable Controllers (AREA)
- Casings For Electric Apparatus (AREA)
Abstract
The invention provides a base board for a programmable controller and a programmable controller system. The coupling of the PLC module with respect to the base plate is secured, preventing an incomplete locking state. A base plate for PLC is provided with: a base substrate having a connection portion to which a connector portion of the PLC module is connected; a base side hinge part which is arranged at one end side of the base substrate and supports one end side of the PLC module to be rotatable; and a locking mechanism which is provided on the other end side of the base substrate and fixes the other end side of the PLC module. The lock mechanism has: a latch portion capable of reciprocating in one direction between one end side and the other end side of the base substrate; a guide portion that guides movement of the hook lock portion; and a biasing member that biases the hook portion toward the other end of the base substrate with respect to the guide portion. The hook lock portion has an engaging claw portion engageable with an engaged portion provided on the other end side of the PLC module. The engaging claw portion is engageable with the engaged portion at an engaging position where the hook lock portion moves in a predetermined direction against the urging force of the urging member.
Description
Technical Field
The invention relates to a base plate for a programmable controller and a programmable controller system.
Background
A Programmable Logic Controller (PLC) executes a sequence program called a ladder program to control operations of control target devices such as motors and sensors. A system using such a programmable controller (hereinafter referred to as a programmable controller system) is used in, for example, a plant facility and performs input/output control with respect to an external device (see patent document 1).
Such a programmable controller system is generally configured by combining a plurality of units (modules) such as a CPU unit, a power supply unit, and an I/O unit and connecting the plurality of units (modules) via a bus. As an example of this, in recent years, an I/O module (hereinafter, referred to as a PLC module) including a control circuit, an input/output circuit, and the like, and a terminal block module including a terminal block for electrically connecting to an external device (for example, a load such as a motor, a belt conveyor, an electromagnetic valve, a display device, a lamp, an input device such as a switch, a sensor, and the like) are separately configured and detachably coupled to form 1 unit.
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open publication No. 2010-113444
Disclosure of Invention
Problems to be solved by the invention
In addition, in a structure in which a PLC module and a base plate (a module on which a printed circuit board having a bus line is mounted) are coupled, a snap-fit method or a screw fixing method as described in patent document 1 is adopted. In the screw fixing method, the fixing work becomes more complicated as the number of PLC modules increases, and on the other hand, in the snap-in method, there is an advantage that the modules can be easily attached and detached as compared with the screw fixing method.
However, in the conventional snap system, the following is assumed: even in a state where the engagement (engagement portion) is not completely engaged, the connector between the PLC module and the base plate is maintained in an electrically connected state, and the system can be operated. Therefore, if the system is operated in a state where the latch is not completely locked, if the latch is disengaged for some reason, there is a possibility that the PLC module is detached from the base plate and the system is stopped.
The present invention has been made in view of the above problems, and an object of the present invention is to provide a base plate for a programmable controller and a programmable controller system, which can reliably couple a PLC module to the base plate and prevent an incomplete lock state.
Means for solving the problems
A base plate for a programmable controller according to an aspect of the present invention is a base plate for a programmable controller, comprising: a base substrate having a connection portion to which a connector portion of the programmable controller module is connected; a base-side hinge portion provided on one end side of the base substrate and rotatably supporting one end side of the programmable controller module; and a lock mechanism provided on the other end side of the base substrate and fixing the other end side of the programmable controller module, the lock mechanism including: a latch portion capable of reciprocating in one direction between one end side and the other end side of the base substrate; a guide portion that guides movement of the hooking portion; and a biasing member that biases the hook lock portion toward the other end side of the base substrate with respect to the guide portion, wherein the hook lock portion has an engaging claw portion that can engage with an engaged portion provided to the other end side of the programmable controller module, and the engaging claw portion can engage with the engaged portion at an engaging position at which the hook lock portion is moved in a predetermined direction against the biasing force of the biasing member.
ADVANTAGEOUS EFFECTS OF INVENTION
According to the present invention, the PLC module can be reliably coupled to the base plate, and an incomplete locking state can be prevented.
Drawings
Fig. 1 is an exploded perspective view showing an example of a base plate according to the present embodiment.
Fig. 2 is a cross-sectional view showing an example of the mounting operation of the PLC module.
Fig. 3 is a partially enlarged view showing an example of the mounting operation of the PLC module.
Fig. 4 is a partially enlarged view showing an example of the mounting operation of the PLC module.
Fig. 5 is a partially enlarged view showing an example of the mounting operation of the PLC module.
Fig. 6 is a cross-sectional view showing an example of the removal operation of the PLC module.
Description of the reference numerals
1. PLC systems (programmable controller systems); 2. a base plate; 3. a PLC module (programmable controller module); 4. a module holder; 5. a locking mechanism; 6. a hooking lock portion; 7. a guide section; 20. a metal plate; 21. a base substrate; 22. a connecting portion; 23. a rail portion (1 st rail portion); 24. a rail portion (2 nd rail portion); 25. a base-side hinge section; 26. a circular arc surface; 30. a connector section; 31. a module side hinge portion; 32. an engaging protrusion (engaged portion); 33. a circular arc surface; 34. an inclined surface; 35. a notch portion; 36. inclined surface (2 nd inclined surface); 37. a through hole; 40. a clamping sheet; 41. pressing the wall; 50. a force application member; 60. a clamping claw part; 61. a top plate portion; 62. a connecting portion; 63. inclined surface (1 st inclined surface); 64. a clamping sheet; 70. a bottom wall portion; 71. a rear wall portion; 72. a sidewall portion; 73. a fastening part; 74. a guide hole; C. a fulcrum point.
Detailed Description
A programmable controller system (hereinafter referred to as a PLC system) to which the present invention can be applied will be described below. Fig. 1 is an exploded perspective view showing an example of a base plate according to the present embodiment. Fig. 2 is a cross-sectional view showing an example of the mounting operation of the PLC module.
The PLC system (base board and PLC module) described below is merely an example in principle, and is not limited to this, and can be modified as appropriate.
In the following drawings, the direction in which a plurality of rectangular parallelepiped PLC modules are arranged (the short side direction of the PLC modules) is defined as the X direction, the longitudinal direction of the PLC modules is defined as the Y direction, and the inserting/removing direction of the connector (PLC module) is defined as the Z direction. In some cases, the X direction is referred to as the left-right direction, the Y direction is referred to as the up-down direction, and the Z direction is referred to as the front-back direction. These directions (front-rear, left-right, up-down directions) are terms used for convenience of explanation, and the correspondence relationship corresponding to each of the XYZ directions may be changed depending on the installation posture of the PLC system.
As shown in fig. 1 and 2, a PLC system 1 according to the present embodiment is configured by mounting a plurality of PLC modules 3 on a base plate 2. The PLC module 3 is configured by mounting a circuit board in, for example, a case, and has a substantially rectangular parallelepiped shape as a whole. The PLC module 3 has a rectangular shape elongated in the Y direction when viewed in the Z direction, and a connector portion 30 is disposed on the rear surface as a connecting portion electrically connected to the base plate 2.
A module-side hinge portion 31 supported by a base-side hinge portion 25 of a base plate 2 to be described later is formed at a lower end (one end side) of the rear surface of the PLC module 3. Further, an engaging projection 32 fixed to the lock mechanism 5 of the base plate 2 is formed on the upper end (the other end side) of the rear surface of the PLC module 3. The engaging projection 32 constitutes an engaged portion with respect to the lock mechanism 5. The engaging protrusion 32 is provided on the opposite side of the module-side hinge portion 31 with the connector portion 30 therebetween when viewed in the X direction.
The module-side hinge portion 31 is formed of a plate-like body projecting rearward from the lower end of the rear surface of the PLC module 3. The upper surface of the module-side hinge portion 31 has an arc surface 33 and an inclined surface 34 connected to the arc surface 33. The inclined surface 34 is inclined downward as it goes rearward. Further, an arc-shaped notch 35 is formed at the lower end of the module-side hinge portion 31. The notch portion 35 constitutes an engaged portion with respect to the base-side hinge portion 25 to be discussed later.
The engaging protrusion 32 protrudes rearward from the upper end of the rear surface of the PLC module 3, and has a substantially triangular shape in a side view in the X direction. The engaging protrusion 32 is formed such that the tip end becomes thinner toward the rear. The lower surface of the engagement projection 32 is an inclined surface 36 inclined upward toward the rear. Further, the engaging protrusion 32 is formed with a through hole 37 penetrating in the vertical direction (Y direction). The through hole 37 penetrates the inclined surface 36. The through hole 37 constitutes an engaged portion with respect to the lock mechanism 5 to be discussed later.
The base plate 2 is configured by disposing a base substrate 21 on the front surface of a metal plate 20 disposed on the XY plane. The metal plate 20 has a rectangular shape elongated in the X direction when viewed in the Z direction, and is formed of a metal material such as aluminum. The base substrate 21 is disposed at the center of the metal plate 20 in the Y direction, and has a rectangular shape elongated in the X direction. A plurality of connection portions 22 corresponding to the connector portion 30 of the mounted PLC module 3 are provided on the front surface of the base substrate 21. The connector portion 30 of the PLC module 3 is connected to the connection portion 22. The plurality of connecting portions 22 are arranged in the X direction. The number of the connection portions 22 can be changed as appropriate depending on the number of the PLC modules 3 to be mounted.
A pair of rail portions 23 and 24 are formed on the metal plate 20 on the lower side (one end side) and the upper side (the other end side) of the base substrate 21. The pair of rail portions 23 and 24 are formed to extend in the X direction. The pair of rail portions 23 and 24 are arranged to be vertically spaced from the base substrate 21. The module holder 4 is disposed on a rail portion 23 (1 st rail portion) on the lower side (one end side of the base substrate 21), and the lock mechanism 5 is disposed on a rail portion 24 (2 nd rail portion) on the upper side (the other end side of the base substrate 21). The module holder 4 and the lock mechanism 5 are arranged one for each of 1 PLC module 3. That is, in the present embodiment, a plurality of module holders 4 and lock mechanisms 5 are arranged so as to correspond to a plurality of PLC modules 3. The number of PLC modules 3, module holders 4, and lock mechanisms 5 can be changed as appropriate.
A base-side hinge portion 25 engageable with the module-side hinge portion 31 is formed at the lower end of the rail portion 23. The base-side hinge portion 25 protrudes upward from the lower end of the rail portion 23, and extends in the X direction along the rail portion 23. An arc surface 26 capable of being received in the notch 35 of the module-side hinge portion 31 is formed at the tip of the base-side hinge portion 25. The details will be described later, but the base-side hinge portion 25 rotatably supports one end side (lower end side) of the PLC module 3.
The module holder 4 is a block body that engages with the rail portion 23, and is formed of, for example, synthetic resin. The module holder 4 includes an engaging piece 40 that engages with the rail portion 23, and a pressing wall 41 that covers the upper side of the module-side hinge portion 31. The engaging piece 40 is provided on the rear surface side of the module holder 4. The pressing wall 41 projects forward from the front upper end of the module holder 4. Details will be discussed later, but the pressing wall 41 functions as a stopper that restricts upward movement of the module-side hinge portion 31.
The module holder 4 is disposed at a predetermined position in the X direction of the rail portion 23 by engaging the engaging piece 40 with an engaged portion (not shown) of the rail portion 23 and sliding the module holder 4 in the X direction along the rail portion 23.
The lock mechanism 5 is used to fix the upper end side (the other end side) of the PLC module 3. Specifically, the lock mechanism 5 includes: a latch portion 6 that is capable of reciprocating in one direction (vertical direction) between one end side and the other end side of the base substrate 21; a guide portion 7 that guides movement of the hook lock portion 6; and a biasing member 50 that biases the latch portion 6 toward the other end side of the base substrate 21 with respect to the guide portion 7.
The latch portion 6 has a substantially japanese コ character (letter C or letter U) shape with its front open in a side view in the X direction, and is formed of, for example, a synthetic resin. Specifically, the hook lock portion 6 includes: an L-shaped engaging claw portion 60 positioned below the side view; a top plate portion 61 located above; and a connecting portion 62 that connects the engaging claw portion 60 and the top plate portion 61.
The engaging claw portion 60 extends forward from the lower end of the coupling portion 62, and has a shape in which the tip end is bent upward. The top surface of the bent engaging claw portion 60 is an inclined surface 63 inclined downward toward the front. As will be described in detail later, the distal end of the engaging claw 60 can engage with the engaging protrusion 32 (through hole 37) of the PLC module 3.
The top plate 61 is formed of a plate extending forward from the upper end of the connection portion 62. The top plate portion 61 functions as a pressing portion that can be pressed by a finger of an operator who mounts the PLC module 3. The coupling portion 62 couples the rear end of the engaging claw portion 60 and the rear end of the top plate portion 61, and is formed of a plate-like body extending vertically.
A pair of engaging pieces 64 for the guide portion 7 are provided at both left and right ends of the top plate portion 61 and the coupling portion 62. The pair of engaging pieces 64 are formed to protrude outward in the X direction from upper portions of the top plate portion 61 and the left and right ends of the connecting portion 62, respectively, to be bent downward, and then to protrude outward in the X direction. The tip of the engaging piece 64 engages with a guide hole 74 of the guide portion 7, which will be discussed later. An engaging portion (not shown) for engaging an upper end of the biasing member 50, which will be described later, is formed on a lower surface of the engaging claw portion 60.
The guide portion 7 is a block body that supports the hook lock portion 6 so as to be movable up and down, and is formed of, for example, synthetic resin. Specifically, the guide portion 7 includes: a bottom wall portion 70; a rear wall portion 71 rising upward from a rear end of the bottom wall portion 70; and a pair of side wall portions 72 rising upward from both left and right ends of the bottom wall portion 70. Both ends of the rear wall portion 71 are connected to the respective side wall portions 72. A space for accommodating a part (lower half) of the hook lock portion 6 is formed by a space surrounded by the bottom wall portion 70, the rear wall portion 71, and the pair of side wall portions 72.
An engaging portion 73 for engaging the lower end of the urging member 50 is formed substantially at the center of the upper surface of the bottom wall portion 70. Each side wall portion 72 is formed with a guide hole 74 penetrating in the left-right direction. The guide hole 74 has a vertically long elongated hole shape when viewed in the X direction. The front-rear width of the guide hole 74 is formed to a size corresponding to the width of the distal end of the engagement piece 64. The urging member 50 is formed of a compression coil spring that can expand and contract in the vertical direction. The urging member 50 is not limited to a coil spring, and may be formed of, for example, a plate spring.
The lock mechanism 5 is integrated by interposing the biasing member 50 between the latch portion 6 and the guide portion 7 in advance, and engaging the engaging piece 64 of the latch portion 6 with the corresponding guide hole 74. Then, the integrated lock mechanism 5 is fitted into the rail portion 24 and mounted.
The rear surface of the guide portion 7 is engaged with an engaged portion (not shown) of the rail portion 24, and the lock mechanism 5 is slid in the X direction along the rail portion 24, whereby the lock mechanism 5 is disposed at a predetermined position in the X direction of the rail portion 24. More specifically, the module holder 4 and the lock mechanism 5 are arranged in line with the connector portion 30 on the base substrate 21 in the Y direction.
However, in the conventional coupling structure between the PLC module and the base plate of the PLC system, a fastening member such as a screw is used in order to secure a reliable coupling state between the two. However, when a plurality of PLC modules are mounted on the base plate, the number of screw fastening operations increases, and as a result, the operator is burdened. Therefore, a snap-in system is also adopted, which can mount the PLC module more easily than the screw-fixing system.
However, in the case of the snap-fit coupling structure, even in a state where the snap (engagement portion) is not completely engaged, the connector between the PLC module and the base plate may be maintained in an electrically connected state. The system can be operated in a state where the PLC module is not completely fixed to the base plate.
When the system is operated in such a state, for example, the following problems may occur: when the communication line or the input/output line of the PLC module is pulled, the PLC module may be detached from the base plate and the system may be stopped.
Therefore, the present inventors have conceived of the present invention with the object of securing the coupling of the PLC module to the base plate and preventing an incomplete locking state. Specifically, the inventors have paid attention to the position and angle at which the connector section 30 of the PLC module 3 is electrically connected to the connection section 22 of the base plate 2, and have derived a structure in which the PLC module 3 is rotated about one end side of the PLC module 3 as a fulcrum and the other end side is locked by the locking mechanism 5 on the base plate side. At this time, the lock mechanism 5 is configured to slide linearly in the radial direction with respect to the rotational direction of the PLC module 3, thereby preventing the connector section 30 from being held in a state of being connected halfway to the connection section 22. That is, the gist of the present invention is that, when the PLC module 3 is mounted on the base plate 2, the locking mechanism 5 is linearly slid on the other end side of the PLC module 3 in accordance with the operation of rotating the PLC module 3 about one end side of the PLC module 3 as a fulcrum, and the locking is enabled.
Specifically, in the present embodiment, the base plate 2 is provided with: a base-side hinge portion 25 that rotatably supports one end side (lower end side) of the PLC module 3; and a lock mechanism 5 that fixes the other end side (upper end side) of the PLC module 3. The lock mechanism 5 has: a latch portion 6 that is capable of reciprocating in one direction (vertical direction) between one end side and the other end side of the base substrate 21; a guide portion 7 that guides the vertical movement of the hook lock portion 6; and a biasing member 50 that biases the latch portion 6 toward the other end side (lower side) of the base substrate 21 with respect to the guide portion 7. The hook lock portion 6 has an engaging claw portion 60 engageable with an engaged portion (engaging projection 32) provided on the other end side of the PLC module 3. The engaging claw portion 60 can be engaged with the engaging protrusion portion 32 at an engaging position after the hook lock portion 6 is moved in a predetermined direction (downward) against the biasing force of the biasing member 50.
According to this configuration, the other end side of the PLC module 3 can be locked by the linear movement of the latch portion 6 (the movement in the radial direction about the base-side hinge portion 25) with respect to the rotational movement of the PLC module 3 about the base-side hinge portion 25 as a fulcrum. As a result, the PLC module 3 can be reliably coupled to the base plate 2, and an incomplete locking state can be prevented. Further, by concentrating these fixing structures on the base plate 2, the versatility can be improved without changing the design of the conventional PLC module 3.
Next, the operation of attaching and detaching the PLC module to and from the base plate will be described in detail with reference to fig. 2 to 6. Fig. 3 to 5 are partially enlarged views showing an example of the mounting operation of the PLC module. Specifically, fig. 3 and 4 are partially enlarged views of the periphery of the lock mechanism, and fig. 5 is a partially enlarged view of the periphery of the module holder. Fig. 6 is a cross-sectional view showing an example of the removal operation of the PLC module.
First, the mounting operation will be described. As shown in fig. 2, first, on the lower end side of the base plate 2, the module-side hinge portion 31 is inserted into the gap formed between the front surface of the module holder 4 and the rail portion 23. Then, the tip end (arc surface 26) of the base-side hinge portion 25 is engaged with the notch portion 35. This enables the entire PLC module 3 to be rotated about the base-side hinge portion 25 as a fulcrum C (see fig. 5). Further, the gap formed between the front surface of the module holder 4 and the rail portion 23 is formed in a size capable of completely receiving the module-side hinge portion 31.
As shown in fig. 2, when the entire PLC module 3 is pivoted about the base-side hinge portion 25 as a fulcrum, the engaging projection 32 located on the upper end side of the PLC module 3 approaches the lock mechanism 5. When the PLC module 3 is further rotated as a whole, the inclined surface 36 of the engaging projection 32 abuts against the inclined surface 63 of the hook lock portion 6 (the engaging claw portion 60) (see fig. 3). At this time, although the tip of the connector portion 30 slightly enters the connection portion 22 (not shown), the connector portion 30 and the connection portion 22 are not yet electrically connected.
When the tip end of the engaging protrusion 32 is further pushed in toward the Z-direction negative side, a downward (Y-direction negative side) force acts on the latch portion 6 due to the inclined surfaces 36 and 63. Thereby, the hook lock portion 6 is pushed down and slightly moved as a whole against the biasing force of the biasing member 50 on the Y direction positive side. At this time, the relative contact position between the inclined surface 36 of the engaging protrusion 32 and the inclined surface 63 of the engaging claw 60 gradually moves toward the through hole 37 in the lower direction. Further, the movement of the latch portion 6 is guided along the longitudinal direction (Y direction) of the guide hole 74 by the engagement of the engagement piece 64 with the guide hole 74.
As shown in fig. 4, when the tip end of the engaging claw portion 60 reaches a position directly below the through hole 37, the contact state between the inclined surfaces 36 and 63 is released, and the tip end of the engaging claw portion 60 slightly moves and is accommodated in the through hole 37 by the biasing force of the biasing member 50. As a result, the engaging claw portion 60 is engaged with the through hole 37, and the upper end of the PLC module 3 is locked by the lock mechanism 5. That is, the position where the engaging claw portion 60 is received in the through hole 37 is the engaging position. At this time, the connector portion 30 and the connection portion 22 are completely engaged and electrically connected to each other for the first time.
In this way, when the engaging claw portions 60 are received in the through holes 37, the connector portion 30 and the connecting portion 22 are electrically connected for the first time, and therefore, the connector portion 30 and the connecting portion 22 are not electrically connected in a state where the lock mechanism 5 is functioning halfway. Conversely, the PLC module 3 is not completely locked as long as the connector section 30 and the connection section 22 are not electrically connected.
In the series of operations shown in fig. 3 to 4, while the inclined surfaces 36 and 63 are in contact with each other, the entire PLC module 3 may be displaced upward (Y-direction positive side) by the biasing force of the biasing member 50, and the engagement between the base-side hinge portion 25 and the cutout portion 35 may be disengaged.
However, in the present embodiment, as shown in fig. 5, the module holder 4 is provided on one end side of the base substrate 21. The module holder 4 has a pressing wall 41, and the pressing wall 41 allows the PLC module to rotate about the base-side hinge portion 25 as a fulcrum C, while restricting the movement of the PLC module 3 in the movement direction (upward direction) of the hook lock portion 6. The pressing wall 41 is provided on the Y-direction positive side with respect to the module-side hinge portion 31 so as to cover the arc surface 33 and the inclined surface 34 of the module-side hinge portion 31.
According to this configuration, since the movement of the PLC module 3 to the Y direction positive side is restricted by the pressing wall 41, it is possible to prevent: due to the biasing force of the biasing member 50, the entire PLC module 3 is displaced upward (Y-direction positive side) and the engagement between the base-side hinge portion 25 and the notch portion 35 is released.
When the PLC module 3 is detached from the base plate 2, as shown in fig. 6, the top plate 61 is pushed down against the biasing force of the biasing member 50, and the engagement state between the engaging claw 60 and the through hole 37 is released. Thus, the lock is released, and the PLC module 3 can be detached from the base plate 2 by pulling the upper end side of the PLC module 3 toward the Z-direction positive side to release the connection between the connector portion 30 and the connection portion 22.
In the present embodiment, the pair of rail portions 23 and 24 are disposed to face each other with the base substrate 21 interposed therebetween. The module holder 4 is attached to a rail portion 23 (1 st rail portion) provided on one end side of the base substrate 21. The lock mechanism 5 is attached to a rail portion 24 (2 nd rail portion) provided on the other end side of the base substrate 21. The connection portion 22, the lock mechanism 5, and the module holder 4 on the base substrate 21 are arranged in a row in the Y direction. The connecting portion 22, the lock mechanism 5, and the module holder 4 are arranged in a plurality of rows along the extending direction (X direction) of the pair of rail portions 23 and 24.
With these configurations, by attaching the lock mechanism 5 and the module holder 4 to the pair of rail portions 23 and 24, the number of PLC modules 3 can be increased according to the positions and the number thereof, and the expandability of the PLC system 1 as a whole can be improved. Further, a plurality of PLC modules 3 can be mounted along the pair of rail portions 23 and 24, so that the expandability described above can be improved, and the number of man-hours for mounting the PLC modules does not increase.
As described above, according to the present embodiment, the coupling of the PLC module 3 to the base plate 2 is secured, and an incomplete locking state can be prevented.
In the above embodiment, the case where the module holder 4 is disposed on the lower end side of the base substrate 21 and the lock mechanism 5 is disposed on the upper end side of the base substrate 21 has been described, but the present invention is not limited to this configuration. Their arrangement may also be reversed upside down. The arrangement relationship between the engaging protrusion 32 of the PLC module 3 and the module-side hinge 31 may be reversed in the vertical direction.
In the above embodiment, the case where the engagement piece 64 is provided in the hook lock portion 6 and the guide hole 74 into which the engagement piece 64 is engaged is provided in the guide portion 7 has been described, but the present invention is not limited to this. The hook lock portion 6 may be provided with a guide hole 74, and the guide portion 7 may be provided with an engagement piece 64.
In the above embodiment, the case where the module holder 4 is attached to the rail portion 23 and the lock mechanism 5 is attached to the rail portion 24 has been described, but the present invention is not limited to this configuration. The module holder 4 may be formed integrally with the rail portion 23, and the lock mechanism 5 may be formed integrally with the rail portion 24.
The present embodiment and the modification are explained, but as another embodiment, the above embodiment and the modification may be combined wholly or partially.
The present embodiment is not limited to the above-described embodiments and modifications, and various changes, substitutions, and alterations can be made without departing from the spirit and scope of the technical idea. The present invention can be implemented by a method that can be realized by other methods using other techniques derived from or developed from the above-described techniques. Therefore, the claims cover all embodiments that can be included in the scope of the technical idea.
The characteristic points of the above embodiment are summarized below.
The base plate for a programmable controller according to the above-described embodiment is characterized by comprising: a base substrate having a connection portion to which a connector portion of the programmable controller module is connected; a base-side hinge portion provided on one end side of the base substrate and rotatably supporting one end side of the programmable controller module; and a lock mechanism provided on the other end side of the base substrate and fixing the other end side of the programmable controller module, the lock mechanism including: a latch portion capable of reciprocating in one direction between one end side and the other end side of the base substrate; a guide portion that guides movement of the hooking portion; and a biasing member that biases the hook lock portion toward the other end side of the base substrate with respect to the guide portion, wherein the hook lock portion has an engaging claw portion that can engage with an engaged portion provided to the other end side of the programmable controller module, and the engaging claw portion can engage with the engaged portion at an engaging position at which the hook lock portion is moved in a predetermined direction against the biasing force of the biasing member.
In the base plate for a programmable controller according to the above-described embodiment, the hooking portion includes a pair of engaging pieces engageable with the guide portion, the guide portion includes a guide hole into which the pair of engaging pieces are engaged and which is long in a moving direction of the hooking portion, and the hooking portion is movable along a longitudinal direction of the guide hole.
In the base plate for a programmable controller according to the above-described embodiment, the connector portion and the connecting portion are electrically connected at the engagement position.
In the base plate for a programmable controller according to the above-described embodiment, the base plate for a programmable controller further includes a block holder provided on one end side of the base substrate, and the block holder includes a pressing wall that allows rotational movement of the programmable controller block with the base-side hinge portion as a fulcrum and restricts movement of the programmable controller block in a movement direction of the latch portion.
In addition, the base plate for a programmable controller according to the above-described embodiment is characterized by further including a pair of rail portions disposed to face each other with the base plate interposed therebetween, the pair of rail portions including: a 1 st rail portion provided on one end side of the base substrate and to which the module holder is attached; and a 2 nd rail portion provided on the other end side of the base substrate and to which the lock mechanism is attached, wherein the connecting portion, the lock mechanism, and the module holder are arranged in a line.
In the base plate for a programmable controller according to the above-described embodiment, the connecting portion, the lock mechanism, and the module holder are arranged in a plurality of rows along the extending direction of the pair of rail portions.
In addition, the programmable controller system according to the above-described embodiment is characterized by including: a base plate for the programmable controller; and a rectangular parallelepiped programmable controller module attached to the base plate, the programmable controller module including: a module-side hinge portion provided at one end side in the longitudinal direction of the programmable controller module and capable of engaging with the base-side hinge portion; and an engaging protrusion provided on the other end side in the longitudinal direction of the programmable controller module and engageable with the lock mechanism.
In the programmable controller system according to the above-described embodiment, the engaging claw portion has a 1 st inclined surface that can abut against the engaging protrusion portion, and the engaging protrusion portion has: a 2 nd inclined surface which can abut against the 1 st inclined surface; and a through hole through which the 2 nd inclined surface passes, the tip end of the engaging claw portion being engageable with the through hole, wherein, in a state where the 2 nd inclined surface and the 1 st inclined surface are in contact with each other during rotational movement of the programmable controller module about the base-side hinge portion as a fulcrum, the engaging protrusion presses down the hook lock portion against the biasing force of the biasing member, and the tip end of the engaging claw portion engages with the through hole, whereby the locking mechanism locks the programmable controller module.
Industrial applicability
As described above, the present invention has an effect that coupling of the PLC module to the base plate is secured and an incomplete locking state can be prevented, and is particularly useful for the base plate for the PLC module and the PLC system.
Claims (8)
1. A base plate for a programmable controller, characterized in that,
the base plate for the programmable controller is provided with:
a base substrate having a connection portion to which a connector portion of the programmable controller module is connected;
a base-side hinge portion provided on one end side of the base substrate and rotatably supporting one end side of the programmable controller module; and
a lock mechanism provided on the other end side of the base substrate and fixing the other end side of the programmable controller module,
the lock mechanism has:
a latch portion capable of reciprocating in one direction between one end side and the other end side of the base substrate;
a guide portion that guides movement of the hooking portion; and
a biasing member that biases the hook lock portion toward the other end side of the base substrate with respect to the guide portion,
the latching portion has an engaging claw portion capable of engaging with an engaged portion provided to the other end side of the programmable controller module,
the engaging claw portion is engageable with the engaged portion at an engaging position at which the hook lock portion is moved in a predetermined direction against the biasing force of the biasing member.
2. A base plate for a programmable controller according to claim 1,
the hooking lock portion has a pair of engaging pieces engageable with the guide portion,
the guide portion has a guide hole that is long in the moving direction of the latch portion and into which the pair of engaging pieces are engaged,
the hooking portion is movable along a longitudinal direction of the guide hole.
3. A base plate for a programmable controller according to claim 1 or 2,
the connector portion and the connecting portion are electrically connected at the engagement position.
4. A base plate for a programmable controller according to any one of claims 1 to 3,
the base plate for a programmable controller further comprises a module holder provided on one end side of the base plate,
the module holder has a pressing wall that allows rotational movement of the programmable controller module about the base-side hinge portion as a fulcrum, while restricting movement of the programmable controller module in a movement direction of the latching portion.
5. A base plate for a programmable controller according to claim 4,
the base plate for a programmable controller further comprises a pair of rail portions disposed to face each other with the base plate interposed therebetween,
the pair of rail portions has:
a 1 st rail portion provided on one end side of the base substrate and to which the module holder is attached; and
a 2 nd rail portion provided on the other end side of the base substrate and to which the lock mechanism is attached,
the connecting portion, the locking mechanism, and the module holder are arranged in a line.
6. A base plate for a programmable controller according to claim 5,
the connecting portion, the lock mechanism, and the module holder are arranged in a plurality of rows along the extending direction of the pair of rail portions.
7. A programmable controller system, characterized in that,
the programmable controller system includes:
a base plate for a programmable controller according to any one of claims 1 to 6; and
the programmable controller module in a rectangular parallelepiped shape mounted on the base plate,
the programmable controller module has:
a module-side hinge portion provided at one end side in the longitudinal direction of the programmable controller module and capable of engaging with the base-side hinge portion; and
and an engaging protrusion provided on the other end side in the longitudinal direction of the programmable controller module and capable of engaging with the lock mechanism.
8. The programmable controller system of claim 7,
the engaging claw part has a 1 st inclined surface capable of abutting against the engaging projection part,
the engaging protrusion includes:
a 2 nd inclined surface which can abut against the 1 st inclined surface; and
a through hole penetrating the 2 nd inclined surface, the tip end of the engaging claw portion being engageable with the through hole,
in the rotation movement of the programmable controller module about the base-side hinge portion as a fulcrum, in a state where the 2 nd inclined surface and the 1 st inclined surface are in contact, the engagement projection presses down the hook lock portion against the biasing force of the biasing member, and the tip end of the engagement claw portion engages with the through hole, whereby the lock mechanism locks the programmable controller module.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019206010A JP6717420B1 (en) | 2019-11-14 | 2019-11-14 | Base board for programmable controller and programmable controller system |
| JP2019-206010 | 2019-11-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112799342A true CN112799342A (en) | 2021-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011064221.7A Pending CN112799342A (en) | 2019-11-14 | 2020-09-30 | Base plate for programmable controller and programmable controller system |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6717420B1 (en) |
| KR (1) | KR102407418B1 (en) |
| CN (1) | CN112799342A (en) |
| TW (1) | TWI764299B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102653138B1 (en) * | 2022-02-18 | 2024-04-01 | 삼원액트 주식회사 | A distribute wire connector |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2021081766A (en) | 2021-05-27 |
| TW202119145A (en) | 2021-05-16 |
| JP6717420B1 (en) | 2020-07-01 |
| KR20210058650A (en) | 2021-05-24 |
| KR102407418B1 (en) | 2022-06-10 |
| TWI764299B (en) | 2022-05-11 |
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