CN109155470B - Terminal base unit and ventilation fan - Google Patents
Terminal base unit and ventilation fan Download PDFInfo
- Publication number
- CN109155470B CN109155470B CN201680084890.6A CN201680084890A CN109155470B CN 109155470 B CN109155470 B CN 109155470B CN 201680084890 A CN201680084890 A CN 201680084890A CN 109155470 B CN109155470 B CN 109155470B
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- China
- Prior art keywords
- electric wire
- device electric
- external power
- housing
- insertion hole
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/007—Ventilation with forced flow
- F24F7/013—Ventilation with forced flow using wall or window fans, displacing air through the wall or window
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
- F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
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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
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
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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
- H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
- H01R9/22—Bases, e.g. strip, block, panel
Abstract
The terminal block unit (20) is connected with a first terminal block (21) and a second terminal block (52). The first terminal holder (21) is provided with a housing formed with an external power supply line insertion hole, a first in-device electric wire insertion hole (30), and a plurality of second in-device electric wire insertion holes (50), a first conductive plate provided inside the housing, and a second conductive plate provided inside the housing. The first conductive plate has a first in-device electric wire contact surface contacting an in-device electric wire inserted into the first in-device electric wire insertion hole and an external power supply wire contact surface contacting an external power supply wire, the second conductive plate has a second in-device electric wire contact surface contacting an in-device electric wire inserted into the second in-device electric wire insertion hole, and a spacer portion separating the first conductive plate from the second conductive plate is formed in the housing. The second terminal block (52) is not provided with the second in-device electric wire insertion hole (50) and the second conductive plate.
Description
Technical Field
The present invention relates to a terminal block unit for connecting wires and a ventilation fan.
Background
The ventilation fan is provided with a terminal seat, and electric wires in the terminal seat are equal in electric wire. Patent document 1 discloses the following structure: in such a terminal block, an inclined surface for smoothing insertion of a wire is formed in the wire connecting portion of the terminal block. Further, patent document 1 discloses a structure in which a rib is formed to prevent a connected electric wire from falling down. Thus, in the terminal block for connecting the electric wire, the improvement of the workability and the maintenance of the proper state of the connected electric wire are realized.
Prior art documents
Patent document
Patent document 1: japanese laid-open patent publication No. 2-295075
Disclosure of Invention
Problems to be solved by the invention
When the terminal block unit formed by connecting the terminal blocks is used in a ventilation fan provided with a motor, the in-device wiring extending from the motor is electrically connected to an external power supply line for supplying power to the motor via a conductive plate provided in the terminal block. However, the internal wirings extending from the motor are sometimes connected to each other without connecting an external power supply line to the internal wirings. In this case, it is necessary to additionally provide a terminal block for connecting the internal wirings, which is problematic in terms of cost and installation space.
In addition, when the in-device wirings are connected to each other, a capacitor may be connected to a middle portion of the in-device wirings connected to each other. In this case, a dead-end connector is provided at a connection portion between the capacitor and the in-device wiring. Therefore, a failure due to caulking failure of the dead end connector may occur. In addition, there are problems as follows: since the operation of caulking the dead end connector is required, the workability of wiring is reduced.
The present invention has been made in view of the above circumstances, and an object thereof is to obtain a terminal block unit including: even when the internal wirings are connected to each other, it is not necessary to add a terminal block, and it is possible to improve the reliability of the product and the wiring workability, and to save space.
Means for solving the problems
In order to solve the above problems, a terminal block unit according to the present invention is a terminal block unit in which a first terminal block and a second terminal block are connected. The first terminal holder includes: a housing formed with an external power line insertion hole into which an external power line is inserted, a first in-device electric wire insertion hole into which an in-device electric wire is inserted, and a plurality of second in-device electric wire insertion holes into which the in-device electric wires are inserted; a first conductive plate disposed inside the housing; and a second conductive plate disposed inside the housing. The first conductive plate has a first in-device electric wire contact surface contacting an in-device electric wire inserted into the first in-device electric wire insertion hole and an external power supply wire contact surface contacting an external power supply wire, the second conductive plate has a second in-device electric wire contact surface contacting an in-device electric wire inserted into the second in-device electric wire insertion hole, and a spacer portion separating the first conductive plate from the second conductive plate is formed in the housing. The second terminal holder is provided with: a housing formed with an external power line insertion hole into which an external power line is inserted and a first in-device electric wire insertion hole into which an in-device electric wire is inserted; and a first conductive plate provided inside the housing, the first conductive plate having a first in-device electric wire contact surface contacting an in-device electric wire inserted into the first in-device electric wire insertion hole and an external power supply line contact surface contacting an external power supply line.
ADVANTAGEOUS EFFECTS OF INVENTION
The terminal block unit of the present invention exhibits the following effects: even when the internal wirings are connected to each other, it is not necessary to add a terminal block, and the reliability of the product and the wiring workability can be improved.
Drawings
Fig. 1 is a sectional view showing a mounted state of a ventilation fan according to embodiment 1 of the present invention.
Fig. 2 is a front view showing the ventilation fan according to embodiment 1 in a state where the decorative grill is removed.
Fig. 3 is a front view showing the ventilation fan according to embodiment 1 in a state where the decorative grill is removed and the terminal cover is opened.
Fig. 4 is an enlarged view of the terminal holder housing section of the ventilation fan according to embodiment 1, and is a view showing a state in which the terminal cover is closed.
Fig. 5 is an enlarged view of the terminal holder housing section of the ventilation fan according to embodiment 1, and is a view showing a state in which the terminal cover is opened.
Fig. 6 is a perspective view of the electric wire connection device according to embodiment 1.
Fig. 7 is a diagram showing an assembled state of the electric wire connecting device according to embodiment 1 cut and raised with a metal plate.
Fig. 8 is a view showing an assembled state of the electric wire connection device in embodiment 1 by screw fastening.
Fig. 9 is an exploded perspective view of the electric wire connection device with the protective cover attached in embodiment 1.
Fig. 10 is a perspective view of the electric wire connection device with the protective cover attached in embodiment 1.
Fig. 11 is an enlarged view of the terminal block housing section of the ventilation fan according to embodiment 1, and is a view showing an inserted state of the external power supply line.
Fig. 12 is a front view of the electric wire connection device according to embodiment 1.
Fig. 13 is a cross-sectional view taken along line a-a of fig. 12.
Fig. 14 is a sectional view taken along line B-B of fig. 12.
Fig. 15 is a perspective view of the electric wire connection device according to embodiment 1, as viewed from the side of an external power supply wire insertion hole.
Fig. 16 is a perspective view of the conductive plate in embodiment 1.
Fig. 17 is a perspective view of the leaf spring in embodiment 1.
Fig. 18 is a perspective view of an operation button in embodiment 1.
Fig. 19 is a front view of the terminal block case according to embodiment 1.
Fig. 20 is a perspective view of an intra-appliance wire connecting conductive plate according to embodiment 1.
Fig. 21 is a diagram showing an example of wiring to the electric wire connection device in embodiment 1.
Fig. 22 is a diagram showing an example of wiring to the electric wire connection device in embodiment 1.
Fig. 23 is a diagram illustrating an example of wiring to the electric wire connection device according to embodiment 1, and is a diagram illustrating a distance between different-pole paths.
Fig. 24 is a sectional view of the electric wire connection device according to embodiment 1, and is a view illustrating a distance between different electrode paths.
Detailed Description
Hereinafter, a terminal base and a ventilation fan according to embodiments of the present invention will be described in detail with reference to the accompanying drawings. The present invention is not limited to the embodiment.
Fig. 1 is a sectional view showing a mounted state of a ventilation fan according to embodiment 1 of the present invention. Fig. 2 is a front view showing the ventilation fan according to embodiment 1 in a state where the decorative grill is removed. Fig. 3 is a front view showing the ventilation fan according to embodiment 1 in a state where the decorative grill is removed and the terminal cover is opened. Fig. 4 is an enlarged view of the terminal holder housing section of the ventilation fan according to embodiment 1, and is a view showing a state in which the terminal cover is closed. Fig. 5 is an enlarged view of the terminal holder housing section of the ventilation fan according to embodiment 1, and is a view showing a state in which the terminal cover is opened. Fig. 6 is a perspective view of the electric wire connection device according to embodiment 1. Fig. 7 is a diagram showing an assembled state of the electric wire connecting device according to embodiment 1 cut and raised with a metal plate. Fig. 8 is a view showing an assembled state of the electric wire connection device in embodiment 1 by screw fastening. Fig. 9 is an exploded perspective view of the electric wire connection device with the protective cover attached in embodiment 1. Fig. 10 is a perspective view of the electric wire connection device with the protective cover attached in embodiment 1. Fig. 11 is an enlarged view of the terminal block housing section of the ventilation fan according to embodiment 1, and is a view showing an inserted state of the external power supply line. Fig. 12 is a front view of the electric wire connection device according to embodiment 1. Fig. 13 is a cross-sectional view taken along line a-a of fig. 12. Fig. 14 is a sectional view taken along line B-B of fig. 12. Fig. 15 is a perspective view of the electric wire connection device according to embodiment 1, as viewed from the side of an external power supply wire insertion hole. Fig. 16 is a perspective view of the conductive plate in embodiment 1. Fig. 17 is a perspective view of the leaf spring in embodiment 1. Fig. 18 is a perspective view of an operation button in embodiment 1. Fig. 19 is a front view of the terminal block case according to embodiment 1. Fig. 20 is a perspective view of an intra-appliance wire connecting conductive plate according to embodiment 1. Fig. 21 is a diagram showing an example of wiring to the electric wire connection device in embodiment 1. Fig. 22 is a diagram showing an example of wiring to the electric wire connection device in embodiment 1. Fig. 23 is a diagram illustrating an example of wiring to the electric wire connection device according to embodiment 1, and is a diagram illustrating a distance between different-pole paths. Fig. 24 is a sectional view of the electric wire connection device according to embodiment 1, and is a view illustrating a distance between different electrode paths.
The ventilation fan 100 according to embodiment 1 of the present invention is a duct ventilation fan that ventilates indoor air by inserting the duct connection frame 8 into the duct 14 from the indoor side, and the duct 14 is provided with an opening in the ceiling to communicate the indoor space and the outdoor space.
The ventilation fan 100 includes a sirocco fan 1 and a fan case 5 that houses the sirocco fan 1, and the sirocco fan 1 is a ventilation driving body that circulates ventilation air. The sirocco fan 1 includes a motor 3 and a fan 4 inserted and coupled to a drive shaft of the motor 3.
The ventilation fan 100 includes a main body 2 and a duct connection frame 8, and the duct connection frame 8 is provided at a side portion of the main body 2, extends in a right-angle direction from a side surface of the main body 2, and extends the discharge port 10 to a position communicating with the duct 14. The ventilation fan 100 includes a decorative grill 12, and the decorative grill 12 conceals internal components to improve the design. The decorative grill 12 includes a spring 13 for attachment to the main body 2. The decorative grill 12 is attached to the main body 2 by hooking the spring 13 to the spring fixing portion 7 formed in the fan housing 5.
The duct connecting frame 8 is formed in a stepped shape having different diameters. This is because the outer shape of the pipe connection frame 8 is formed in a stepped shape having different diameters in consideration of the case where the pipe 14 connected to the pipe connection frame 8 can be handled even if the diameters are different and workability in binding (taping) the joint between the pipe connection frame 8 and the pipe 14.
A shutter 9 that is opened and closed by wind pressure is provided in the duct connecting frame 8. The shutter 9 is opened by wind pressure when the ventilation fan 100 is in operation, and closes the inside of the duct connecting frame 8 by the weight of the shutter 9 when the ventilation fan is stopped. By providing the shutter 9, it is possible to prevent outside air from entering the room when the ventilation fan 100 is stopped.
A resin terminal cover 11 having a rotary structure and capable of opening and closing is attached to the fan case 5. As shown in fig. 3 and 5, a wire connecting device 20 is provided at a portion covered by the terminal cover 11, and the wire connecting device 20 is a terminal block unit to which an external power supply wire can be connected. Duct 14 extends to the outside, is connected to a hood attached to an outer wall of a building, and forms a ventilation air duct for ventilating air in a house. When the ventilation fan 100 is used in a place where there is a possibility of a high temperature, the terminal cover 11 is made of a metal plate or is fixed to the fan case 5 with screws. The place that may become high temperature is, for example, a kitchen.
The main body 2 is a box-shaped body having one open side. A motor 3 is provided on the surface of the main body 2 opposite to the opening. As shown in fig. 1, an exhaust port 2b is formed in a side surface of the main body 2. A duct connecting frame 8 is connected to the exhaust port 2 b. The fan case 5 mainly houses the sirocco fan 1, and has an open lower surface to form a suction port 6.
The electric wire connection device 20 is connected to an in-device electric wire. The in-house electric wire is also connected to the motor 3. An external power supply wire is also connected to the wire connection device 20. Thereby, the electricity supplied from the external power supply wire flows to the motor 3 through the wire connecting device 20 and the internal wire.
The motor 3 converts electrical energy into a rotational movement of the shaft and transmits the rotational movement to the fan 4. Thereby, the fan 4 rotates to form a flow of air. By this air flow, air is sucked from the suction port 6 of the fan case 5, and the sucked air is discharged from the exhaust port 2 b. That is, an exhaust air passage extending from the inlet 6 to the outlet 2b is formed in the fan casing 5.
As shown in fig. 6, the wire connecting device 20 includes a plurality of terminal blocks (first terminal blocks) 21 and a terminal block (second terminal block) 52. The plurality of terminal blocks 21 are connected to each other. The electric wire connection device 20 can connect the external power supply electric wires of the number of the terminal blocks 21 to be connected. Among the connected terminal blocks 21, the terminal block 21 provided at the end is connected to a cover 22. The wire connection device 20 can be fixed to another member via the cover 22.
As shown in fig. 7 to 10, the wire connecting device 20 is sandwiched between the mount 23 of the metal plate and the protective cover 25 of the metal plate. The cover 22 is hooked on the projection 23a formed on the mount 23 in a state where the projection 28a (see also fig. 10 and 13) formed on the housing 28 of the terminal block 21 is fitted into the notch 23b formed on the mount 23, and the electric wire connection device 20 is fixed to the mount 23, or the cover 22 is fixed to the mount 23 by screws and the electric wire connection device 20 is fixed to the mount 23.
The side of the electric wire connection device 20 to which the external power supply wire is connected is covered with a case 24, and the case 24 is molded with a flame-retardant resin. In this way, the wire connection device 20 is covered with the mount 23, the protective cover 25, and the case 24, thereby preventing the spread of fire and suppressing dust.
As shown in fig. 4 and 5, the wire connecting device 20 is blocked from the air passage portion by the rib 5a of the air passage forming portion of the fan housing 5 and the terminal cover 11. Therefore, dust contained in the exhaust gas flow can be suppressed from entering the electric wire connection device 20.
The external power cord 26 shown in fig. 11 is connected to the electric wire connection device 20 by being introduced from the top surface side of the main body 2 and inserted into the external power cord insertion hole 29 of the electric wire connection device 20. By opening the terminal cover 11, the external power line insertion hole 29 can be confirmed, and the connection work of the external power line 26 is facilitated even in a state where the main body 2 is embedded in the ceiling.
The electric wire connection device 20 can electrically connect the motor 3 and the external power supply wire 26, but can also electrically connect the internal electric wires to each other. The external power supply line 26 and the in-device electric wire 27 are connected by inserting the external power supply line 26 into the external power supply line insertion hole 29 and inserting the in-device electric wire 27 into the in-device electric wire insertion hole (first in-device electric wire insertion hole) 30 (see also fig. 6). In the terminal block 21 of embodiment 1, one external power supply line insertion hole 29 and two in-device electric wire insertion holes 30 are formed for one terminal block 21. That is, the in-device electric wire 27 can be connected to two wires with respect to one external power supply wire 26. A conductive plate (first conductive plate) 31, a V-shaped plate spring 32, and a rotary operation button 33 are provided inside the case 28 of the terminal block 21.
As shown in fig. 6 and 13, coupling claws 28b and coupling projections 28c are formed on the case 28 of the terminal block 21. The coupling claws 28b and the coupling projections 28c of the adjacent terminal blocks 21 are engaged with each other, whereby the terminal blocks 21 can be coupled to each other. The coupling claws 28b can also be engaged with coupling projections 22a formed on the cover 22 to couple the cover 22. The housing 28 is a resin molded article.
An external power supply line insertion hole 29 into which the external power supply line 26 can be inserted and an internal electric wire insertion hole 30 into which the internal electric wire 27 can be inserted perpendicularly to the external power supply line 26 are formed in the housing 28. As shown in fig. 15, the external power supply line insertion hole 29 of the case 28 is formed in two stages with a wire coating insertion hole 29a into which a coating of the power supply line enters and a lead wire insertion hole 29b into which only a conductor portion of the power supply line enters. The structure is as follows: the coating layer of the electric wire having a diameter larger than that of the lead wire insertion hole 29b is in contact with the coating layer contact surface 29c, whereby deformation of the internal member due to excessive pushing-in of the electric wire can be suppressed.
A housing portion 34 for housing the conductive plate 31 and the plate spring 32 is provided inside the case 28. The housing portion 34 is formed with a wire contact prevention rib 35 (see also fig. 19). The housing portion 34 is divided into a space into which the external power supply line 26 is inserted and a space into which the internal power supply line 27 is inserted by the wire contact prevention rib 35. Thereby, the external power supply line 26 and the in-device electric wire 27 are prevented from contacting each other.
As shown in fig. 12, 13, and 14, a conductive plate 31 and a plate spring 32 are provided inside the case 28.
As shown in fig. 13 and 16, the conductive plate 31 is formed of an L-shaped metal plate punched out by press working. The conductive plate 31 has an external power supply line contact surface 31b that contacts the external power supply line 26 and an in-device electric line contact surface (first in-device electric line contact surface) 31c that contacts the in-device electric line 27. The external power supply line 26 is brought into contact with the external power supply line contact surface 31b by the leaf spring tip 32a of the leaf spring 32 shown in fig. 17 (see also fig. 22). The intra-device electric wire 27 is urged by the elastic force of the tongue 31a of the conductive plate 31 shown in fig. 16 to contact the intra-device electric wire 27 with the intra-device electric wire contact surface 31 c. Thus, the external power supply line 26 and the in-device electric wire 27 are electrically connected via the conductive plate 31 inside the housing 28.
As shown in fig. 17, the plate spring 32 is a member formed by bending a spring material into a V shape, and as shown in fig. 22, when the external power cord 26 is inserted, the plate spring is pushed in while being elastically deformed in the axial direction, and when the external power cord 26 is inserted, the external power cord 26 and the in-device wire 27 can be electrically connected by a force of pushing against the external power cord contact surface 31b of the conductive plate 31, and in this state, the plate spring tip 32a bites into the conductor portion of the external power cord 26, so that the external power cord 26 cannot be pulled out.
The operation button 33 is an L-shaped resin molded product, and is composed of: the external power line 26 is pulled out by applying a force pushing in the axial direction to the tool pressing surface 33a from the outside of the electric wire connection device 20 by using a tool such as a straight screwdriver or the like, pushing in the leaf spring tip 32a portion while rotating with the rotation shaft hole 33b as a rotation shaft, and elastically deforming, forming a gap capable of pulling out the external power line 26 between the external power line contact surface 31b of the conductive plate 31 and the leaf spring tip 32a, and gripping the external power line 26 by the external power line contact surface 31b and the leaf spring tip 32 a.
As shown in fig. 12, 15, and 22, a shaft 36 is formed on the rotary-type operation button 33 for pulling out the external power supply line 26 located in the housing 28, and the shaft 36 prevents the operation button 33 from falling off and enables the operation button 33 to rotate. Further, a stopper wall 37 is formed on the housing 28, and the stopper wall 37 has a function of suppressing plastic deformation of the plate spring 32 due to excessive pushing-in of the operation button 33. When the operation knob 33 is pushed in, the operation knob 33 comes into contact with the stopper wall 37, whereby further pushing-in is suppressed and plastic deformation of the plate spring 32 is prevented.
Further, by inserting a tool such as a straight screwdriver into the U-shaped tool insertion hole 38 which is communicated with the in-device electric wire insertion hole 30 and is provided in parallel, the tongue 31a of the conductive plate 31 is deformed, and the distance between the tip of the tongue 31a and the in-device electric wire contact surface 31c can be made larger than the diameter of the conductive portion of the in-device electric wire 27. Thereby, the in-device electric wires 27 can be pulled out from the in-device electric wire insertion holes 30.
In embodiment 1, a plastic deformation preventing rib 39 is formed in a portion of the case 28 on the back side of the tongue 31a, that is, a portion on the side where the tongue 31a is pushed in. The plastic deformation preventing rib 39 is brought into contact with the tongue portion 31a at a position where the in-device electric wire 27 can be pulled out from the in-device electric wire insertion hole 30 when the tongue portion 31a is elastically deformed in a direction opposite to the biasing direction and is elastically deformed to a position where the in-device electric wire 27 can be removed. The tongue 31a is not further deformed even if further force is applied by contacting the plastic deformation preventing rib 39. In other words, the plastic deformation preventing rib 39 abuts the tongue 31a at a position where the tongue 31a is not plastically deformed. Therefore, the tongue portion 31a can be prevented from being deformed plastically by an increased amount of deformation when the inner wire 27 is removed. Therefore, even when the inner wire 27 is inserted again, the tongue portion 31a can be reliably brought into contact with the inner wire 27, and the inner wire 27 can be prevented from falling off.
Around the in-device electric wire insertion hole 30 provided in the housing 28 and the U-shaped tool insertion hole 38 provided in parallel to communicate with the in-device electric wire insertion hole 30, a rib 40 having a height of such a degree as to cover the conductive portion of the in-device electric wire 27 is formed. Since the conductive portion is covered and hidden by the rib 40, electric shock due to contact with the conductive portion can be prevented. Further, since the creepage distance (creepage distance) between the adjacent intra-device wires 27 is increased by the rib 40, the tracking phenomenon is less likely to occur.
Further, by making the color tone different between the case 28 and the operation button 33, the operator can easily grasp the operation button 33 which is to be pushed in when the external power supply line 26 is pulled out, and workability is improved. Further, by forming the periphery of the in-device electric wire insertion hole 30 as a colored portion colored in the same color as the coating layer of the in-device electric wire 27 inserted into the in-device electric wire insertion hole 30, the operator can easily grasp which in-device electric wire 27 is inserted into which in-device electric wire insertion hole 30, and workability is improved.
Unlike the above-described configuration, as shown in fig. 6 and 12, the terminal block 21 is provided with an intra-connector electric wire connection portion 41 that can only connect the intra-connector electric wires 27. The intra-device electric wire connection portion 41 is provided with an intra-device electric wire connection conductive plate (second conductive plate) 42. As shown in fig. 20, the intra-device wire connecting conductive plate 42 has an intra-device wire contact surface (second intra-device wire contact surface) 42b against which the intra-device wiring 27 is pushed by the tongue portion 42a, but unlike the conductive plate 31, has no portion in contact with the external power supply line 26. Therefore, the in-device electric wires 27 inserted from the in-device electric wire insertion holes (second in-device electric wire insertion holes) 50 formed in the in-device electric wire connection portion 41 are not electrically connected to the external power supply line 26.
Two in-device electric wire insertion holes 50 are formed in the in-device electric wire connecting portion 41. The electric wires inserted into the two in-device electric wire insertion holes 50 formed in the in-device electric wire connection portion 41 are electrically connected to each other via the in-device electric wire connection conductive plate 42. Further, the periphery of the in-device electric wire insertion hole 50 may be a colored portion.
Further, since the intra-device wire connecting portion 41 and the housing portion 34 are separated by the connecting portion 43, as shown in fig. 23 and 24, a sufficient distance can be secured between the wire inserted into the intra-device wire connecting portion 41 and the inter-terminal path of the wire inserted into the housing portion 34 and the conductive plate 31. This can suppress tracking.
As described above, the intra-appliance electric wire connecting conductive plate 42 can press and electrically connect two or more intra-appliance electric wires 27 to the intra-appliance electric wire contact surface 42b by the tongue portion 42 a. In embodiment 1, as shown in fig. 21, the capacitor 51, the black internal wire 27, and the reddish internal wire 27 are inserted into the internal wire connection portion 41, and thereby can be electrically connected to each other, and it is possible to add an extra terminal block 21 not only for connecting the internal wires 27 to each other. Further, since it is not necessary to use a dead end connector for connecting the capacitor 51, the black in-device wire 27, and the light red in-device wire 27, it is possible to prevent the occurrence of a failure due to caulking failure of the dead end connector. This improves the reliability of the product and improves the workability of wire connection.
The electric wire connection device 20 also includes a terminal block (second terminal block) 52 which is not provided with the in-device electric wire connection portion 41, the in-device electric wire insertion hole 50, and the in-device electric wire connection conductive plate 42. Since the intra-device wire connection portion 41 can be eliminated in the region C shown in fig. 21 by coupling the terminal block 52 to the terminal block 21, the space saving and the manufacturing cost reduction of the wire connection device 20 can be achieved.
In the above description, the present invention has been described with respect to a duct ventilation fan, but it is needless to say that the present invention can be applied to other fans, air conditioners, and wire connection devices used in combination with them.
The configuration described in the above embodiment is an example of the contents of the present invention, and may be combined with other known techniques, and a part of the configuration may be omitted or modified within a range not departing from the gist of the present invention.
Description of reference numerals
1 sirocco fan, 2 main body, 2b exhaust port, 3 motor, 4 fan, 5 fan housing, 6 suction port, 7 spring fixing portion, 8 duct connecting frame, 9 shield, 10 discharge port, 11 terminal cover, 12 decorative grill, 13 spring, 14 duct, 20 electric wire connecting device, 21 terminal base, 22 cover, 22a connecting projection, 23 mounting table, 23a projection, 24 case, 25 protective cover, 26 external electric wire, 27 in-house electric wire, 28 case, 28a projection, 28b connecting claw, 28c connecting projection, 29 external electric wire inserting hole, 29a electric wire coating inserting hole, 29b electric wire inserting hole, 29c coating abutting surface, 30 in-house electric wire inserting hole, 31 conductive plate, 31a tongue portion, 31b external electric wire contacting surface, 31c in-house electric wire contacting surface, 32 plate spring, 32a plate spring front end, 33 operating button, 33a tool pushing surface, 33b rotating shaft hole, 34 receiving part, 35 electric wire contact preventing rib, 36 shaft, 37 stopping wall, 38 tool inserting hole, 39 plastic deformation preventing rib, 40 rib, 50 internal electric wire inserting hole, 51 capacitor, 100 ventilation fan.
Claims (6)
1. A terminal block unit in which a first terminal block and a second terminal block are connected to each other,
the first terminal holder includes:
a first housing formed with an external power line insertion hole into which an external power line is inserted, a first in-device electric wire insertion hole into which an in-device electric wire is inserted, and a plurality of second in-device electric wire insertion holes into which the in-device electric wires are inserted;
a first conductive plate disposed inside the first housing; and
a second conductive plate disposed inside the first housing,
the first conductive plate provided inside the first housing has a first in-device electric wire contact surface contacting an in-device electric wire inserted into the first in-device electric wire insertion hole of the first housing and an external power supply line contact surface contacting the external power supply line,
the second conductive plate provided inside the first housing has a second in-device electric wire contact surface that contacts in-device electric wires inserted into the plurality of second in-device electric wire insertion holes of the first housing,
the second terminal holder is provided with:
a second housing formed with an external power line insertion hole into which an external power line is inserted and a first in-device electric wire insertion hole into which an in-device electric wire is inserted; and
a first conductive plate disposed inside the second case,
the first conductive plate provided inside the second housing has a first in-device electric wire contact surface contacting an in-device electric wire inserted into the first in-device electric wire insertion hole of the second housing and an external power supply wire contact surface contacting an external power supply wire inserted into the external power supply wire insertion hole of the second housing.
2. The terminal block unit according to claim 1,
a coupling claw and a coupling protrusion are formed on the housing,
the terminal blocks are coupled to each other by engaging the coupling claws with the coupling projections of the adjacent terminal blocks.
3. The terminal block unit according to claim 1,
an operation button which is operated when the external power cord inserted into the external power cord insertion hole is pulled out is arranged in the shell,
the housing and the operation button are made different in color tone.
4. The terminal block unit according to claim 1,
the periphery of the first in-device electric wire insertion hole is a colored portion colored in the same color as the coating layer of the electric wire inserted into the first in-device electric wire insertion hole.
5. The terminal block unit according to any one of claims 1 to 4,
an isolation portion that separates the first conductive plate from the second conductive plate is formed in the housing.
6. A ventilation fan is characterized by comprising:
the terminal block unit of any one of claims 1 to 5;
a motor electrically connected to the conductive plate of the terminal block; and
a fan coupled with a driving shaft of the motor.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2016/064491 WO2017199292A1 (en) | 2016-05-16 | 2016-05-16 | Terminal base unit and ventilator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109155470A CN109155470A (en) | 2019-01-04 |
| CN109155470B true CN109155470B (en) | 2020-06-19 |
Family
ID=60324945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680084890.6A Active CN109155470B (en) | 2016-05-16 | 2016-05-16 | Terminal base unit and ventilation fan |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6676158B2 (en) |
| CN (1) | CN109155470B (en) |
| TW (1) | TWI631781B (en) |
| WO (1) | WO2017199292A1 (en) |
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|---|---|---|---|---|
| JPH05205798A (en) * | 1992-01-28 | 1993-08-13 | Matsushita Electric Works Ltd | Terminal block of mdf |
| JP2000243477A (en) * | 1999-02-23 | 2000-09-08 | Matsushita Electric Works Ltd | Terminal device |
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| JP2006066183A (en) * | 2004-08-26 | 2006-03-09 | Matsushita Electric Works Ltd | Connection terminal device |
| CN101295898A (en) * | 2007-04-29 | 2008-10-29 | 台达电子工业股份有限公司 | Fan and plug thereof |
| CN101515671A (en) * | 2007-12-10 | 2009-08-26 | Wago管理有限责任公司 | Connecting module |
| CN102938510A (en) * | 2012-11-20 | 2013-02-20 | 上海友邦电气(集团)股份有限公司 | Fast wiring module capable of being connected parallelly |
| CN203103527U (en) * | 2013-01-05 | 2013-07-31 | 浙江三基电子有限公司 | Connector with dual-color colored circle |
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| JPH0693370B2 (en) * | 1989-05-09 | 1994-11-16 | 三菱電機株式会社 | Quick connection terminal device |
| JP2937020B2 (en) * | 1994-07-07 | 1999-08-23 | 三菱電機株式会社 | Terminal connection device and terminal connection restriction device |
| JP2001160431A (en) * | 1999-09-21 | 2001-06-12 | Omron Corp | Terminal board socket |
| JP4059102B2 (en) * | 2003-02-25 | 2008-03-12 | 松下電工株式会社 | Single-phase three-wire wiring 100V / 200V common outlet |
| TWM507610U (en) * | 2015-01-13 | 2015-08-21 | Switchlab Inc | Pulling member fixing structure for electric connector terminal for |
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2016
- 2016-05-16 JP JP2018517936A patent/JP6676158B2/en active Active
- 2016-05-16 WO PCT/JP2016/064491 patent/WO2017199292A1/en active Application Filing
- 2016-05-16 CN CN201680084890.6A patent/CN109155470B/en active Active
- 2016-11-18 TW TW105137791A patent/TWI631781B/en active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05205798A (en) * | 1992-01-28 | 1993-08-13 | Matsushita Electric Works Ltd | Terminal block of mdf |
| JP2000243477A (en) * | 1999-02-23 | 2000-09-08 | Matsushita Electric Works Ltd | Terminal device |
| CN1379507A (en) * | 2001-03-30 | 2002-11-13 | 欧姆龙株式会社 | Electri equipment connection terminal box |
| JP2006066183A (en) * | 2004-08-26 | 2006-03-09 | Matsushita Electric Works Ltd | Connection terminal device |
| CN101295898A (en) * | 2007-04-29 | 2008-10-29 | 台达电子工业股份有限公司 | Fan and plug thereof |
| CN101515671A (en) * | 2007-12-10 | 2009-08-26 | Wago管理有限责任公司 | Connecting module |
| CN102938510A (en) * | 2012-11-20 | 2013-02-20 | 上海友邦电气(集团)股份有限公司 | Fast wiring module capable of being connected parallelly |
| CN203103527U (en) * | 2013-01-05 | 2013-07-31 | 浙江三基电子有限公司 | Connector with dual-color colored circle |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2017199292A1 (en) | 2018-09-13 |
| CN109155470A (en) | 2019-01-04 |
| TW201742323A (en) | 2017-12-01 |
| JP6676158B2 (en) | 2020-04-08 |
| TWI631781B (en) | 2018-08-01 |
| WO2017199292A1 (en) | 2017-11-23 |
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