Integrated rotor and FTU switch

Abstract

The invention relates to an integrated rotor and FTU switch which comprises a shell (1), one or more contact pieces (2) are arranged in the shell (1), a rotor (5) driven by a rotating shaft (6) to rotate is located in the shell (1), the rotor (5) is in sliding contact with contacts (2.1) of the contact pieces (2), a guide groove (1.1) is horizontally formed in the shell (1), a positioning pin (3) is horizontally arranged in the guide groove (1.1) in a sliding mode, and a positioning spring (4) is located in the guide groove (1.1) to push the positioning pin (3). And the head of the positioning pin (3) is in sliding contact with a positioning curved surface on the rotor (5). The integrated rotor and the FTU switch have the advantages that the thickness of the shell is small, and the integrated rotor and the FTU switch can be installed in a narrow installation space.

Description

Technical Field

[0001] This invention relates to an integrated rotor structure and a rotary switch based on the integrated rotor for use on an FTU, belonging to the field of electrical switch technology. Background Technology

[0002] FTU (Feeder Automated Terminal Unit) is an intelligent terminal device installed in a distribution room or on a feeder. It has remote control, telemetry, remote signaling, and fault detection functions, and communicates with the distribution automation master station to provide information on the operation status of the distribution system, various parameters, and information required for monitoring and control. In case of faults, manual triggering can be achieved by operating the FTU switch on the FTU, avoiding direct operation of the pole-mounted switch, thereby improving safety.

[0003] A conventional FTU switch structure, as described in our Chinese patent CN201120502072.8 "Combined Rotary Switch," is installed on the internal circuit board of the FTU using a cable connection. When manual triggering is required, a handle is used to rotate the switch, triggering the contacts within the contact holder and thus sending a control signal. Its structure is as follows... Figure 6 As shown, the contacts within the contact assembly of the contact holder are triggered by a cam, as described in our Chinese patent application CN200510039139.8, "Universal Changeover Switch." Simultaneously, to control the rotation position, a positioning wheel, as described in our Chinese patent application CN201320018950.8, "Gap Compensation Switch," is also required within the contact holder for positioning. Therefore, when a structure fulfilling all the above functions is installed within the switch housing, the FTU switch housing becomes quite thick, reaching up to 35mm. Given the limited installation space within a conventional FTU, installation is inconvenient. Therefore, a new FTU-specific switch with a thinner housing needs to be designed. Summary of the Invention

[0004] The purpose of this invention is to overcome the above-mentioned shortcomings and provide an integrated rotor and FTU switch that can effectively reduce the thickness of the switch.

[0005] The objective of this invention is achieved as follows: An integrated rotor has an upper positioning surface formed by radially inward contraction of the upper part of the rotor, and a lower positioning surface formed by radially inward contraction of the lower part of the rotor. A trigger bump is formed by radially protruding outer wall of the middle part of the rotor.

[0006] The utility model provides a kind of FTU switch, including shell, one or more contact pieces are provided in shell, rotating rotor is located in shell driven by rotating shaft, rotor is in sliding contact with the contact of contact piece, the guiding groove is horizontally arranged in the shell, positioning pin is horizontally arranged in guiding groove, and positioning spring is located in guiding groove and pushes positioning pin, the head of positioning pin is in sliding contact with the positioning curved surface on rotor.

[0007] Preferably, one end of the positioning spring is embedded in the spring hole of the tail of the positioning pin, and the other end abuts against the groove bottom of the guiding groove.

[0008] Preferably, the upper part and the lower part of the rotor are respectively provided with an upper positioning curved surface and a lower positioning curved surface, and the middle part of the rotor is provided with a trigger protrusion in the radial direction. The upper positioning head and the lower positioning head are respectively provided on the head of the positioning pin, the end of the upper positioning head and the lower positioning head is arc structure, and the gap between the upper positioning head and the lower positioning head constitutes a middle avoiding slot. The upper positioning head and the lower positioning head of the positioning pin are in sliding contact with the upper positioning curved surface and the lower positioning curved surface of the rotor, and the trigger protrusion of the rotor is horizontally arranged in the middle avoiding slot of the positioning pin.

[0009] Preferably, the upper cover of the shell is combined with the upper pressing cap, and the rotating shaft penetrates through the pressing cap.

[0010] Preferably, the lower surface of the pressing cap is provided with a containing groove, and the upper part of the positioning pin is located in the containing groove.

[0011] Preferably, the upper cover is combined on the pressing cap, the lower surface of the upper cover is concave in the middle to form a limiting slot, and the limiting block protruding on the outer wall of the rotating shaft is located in the limiting slot.

[0012] Preferably, the lower surface of the upper cover is further provided with a positioning column, and the positioning column is embedded in the positioning hole on the upper surface of the pressing cap.

[0013] Preferably, the head of the rotating shaft is connected with a handle.

[0014] Preferably, the side wall of the shell is installed with a pin, and the pin is electrically connected with the contact piece.

[0015] Compared with the prior art, the utility model has the beneficial effects that: The application realizes the control of the gear when the rotor triggers the contact piece, that is, the control of the gear is realized by the cooperation of the positioning curved surface arranged on the upper and lower surfaces of the rotor and the positioning pin, the whole structure is not only small, but also the symmetrical positioning pins make the whole rotating triggering and positioning process more stable, and the assembly difficulty is reduced, and the assembly efficiency is also improved. Meanwhile, the rotation angle is limited by the limiting block on the rotating shaft, so as to avoid excessive rotation, and the limiting block and the limiting groove on the upper cover are matched, so that no additional parts and space are needed, which is further beneficial to reduce the overall thickness of the shell.

[0016] Meanwhile, the row of pins is plugged with the circuit board during installation and use, which is more convenient and fast compared with the conventional wiring mode. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic view of the FTU switch of the application.

[0018] Figure 2 It is a sectional view of the FTU switch of the application.

[0019] Figure 3 It is a structural schematic view of the FTU switch of the application after removing the upper cover and the gland.

[0020] Figure 4 It is a structural schematic view of the integrated rotor of the application.

[0021] Figure 5 It is a structural schematic view of the upper cover in the application.

[0022] Figure 6 It is a structural schematic view of the rotating switch commonly used in the FTU.

[0023] Among them: The shell 1, the contact piece 2, the positioning pin 3, the positioning spring 4, the rotor 5, the rotating shaft 6, the gland 7, the upper cover 8, and the handle 9. The guide groove 1.1 and the row of pins 1.2. The contact 2.1. The upper positioning head 3.1, the lower positioning head 3.2, the middle avoiding groove 3.3, and the spring hole 3.4. The upper positioning curved surface 5.1, the lower positioning curved surface 5.2, and the triggering protrusion 5.3. The limiting block 6.1. The accommodating groove 7.1 and the positioning hole 7.2. The limiting groove 8.1 and the positioning column 8.2. DETAILED DESCRIPTION

[0024] Reference Figures 1-5The application relates to an FTU switch, which comprises a thin shell 1, one or more contact pieces 2 are arranged in the shell 1, a rotating rotor 5 driven by a rotating shaft 6 is arranged in the shell 1, the rotating shaft 6 is connected with the rotor 5 through a square key, a guide groove 1.1 is horizontally arranged in the shell 1, a positioning pin 3 is horizontally slidably arranged in the guide groove 1.1, a positioning spring 4 is arranged in the guide groove 1.1, one end of the positioning spring 4 is embedded in a spring hole 3.4 at the tail of the positioning pin 3, the other end of the positioning spring 4 abuts against the groove bottom of the guide groove 1.1, upper and lower positioning heads 3.1 and 3.2 are respectively arranged on the head of the positioning pin 3, the end parts of the upper and lower positioning heads 3.1 and 3.2 are in arc structures, and the gap between the upper and lower positioning heads 3.1 and 3.2 forms a middle avoiding groove 3.3. A pin row 1.2 is arranged on the side wall of the shell 1, the pin row 1.2 is beside the contact piece 2, and the pin row 1.2 is electrically connected with the contact piece 2.

[0025] The upper part of the rotor 5 is radially inwardly contracted to form an upper positioning curved surface 5.1, the lower part of the rotor 5 is radially inwardly contracted to form a lower positioning curved surface 5.2, and the middle part of the outer wall of the rotor 5 is radially protruded to form a trigger protruding block 5.3.

[0026] The upper and lower positioning heads 3.1 and 3.2 of the positioning pin 3 are slidably contacted with the upper and lower positioning curved surfaces 5.1 and 5.2 of the rotor 5, the trigger protruding block 5.3 of the rotor 5 is horizontally slidably arranged in the middle avoiding groove 3.3 of the positioning pin 3, and the trigger protruding block 5.3 of the rotor 5 is slidably contacted with the contact 2.1 of the contact piece 2. Through the design of the middle avoiding groove 3.3, not only the interference influence of the positioning pin 3 on the trigger protruding block 5.3 is avoided in the rotating process of the rotor 5, but also the trigger protruding block 5.3 is limited between the upper and lower positioning heads 3.1 and 3.2, so that the operation is more stable; meanwhile, the upper and lower positioning heads 3.1 and 3.2 are simultaneously contacted with the upper and lower positioning curved surfaces 5.1 and 5.2, so that the whole gear control process is more smooth and stable, therefore, the integrated design not only reduces the number of parts, thins the thickness of the shell 1 (through the integrated design of the rotor 5, the thickness of the shell 1 is thinned to 12-13.5 mm, the installation space is greatly saved), but also makes the rotation more stable and smooth, and the gear control more smooth. Figure 2 And Figure 3 The two positioning pins 3 in the embodiment are symmetrically arranged about the rotating shaft 6 to form a pair, and the symmetrically arranged positioning pins 3 are more helpful to the stable rotation of the rotor 5.

[0027] When the rotating shaft 6 drives the rotor 5 to rotate, the upper positioning head 3.1 and the lower positioning head 3.2 move along the curved lines of the upper positioning curved surface 5.1 and the lower positioning curved surface 5.2, the upper positioning curved surface 5.1 and the lower positioning curved surface 5.2 are symmetrically arranged, and according to the gear requirement, a corresponding number of gear grooves can be formed in the curved lines of the upper positioning curved surface 5.1 and the lower positioning curved surface 5.2, so that when the rotating shaft 6 is moved to the curved line close to a gear groove, the radial force of the positioning spring 4 pushing the positioning pin 3 is converted into a pushing force on the rotor 5 under the guidance of the curved line, so that the rotor 5 quickly slides along the curved line into the corresponding gear groove, and in the rotating process, the trigger lug 5.3 of the rotor 5 realizes the release or triggering of the contact of the contact piece 2. At the same time, the number of contact pieces 2 can be determined according to the actual requirement and the installation space of the shell 1, so that multiple contact pieces 2 are arranged to meet the simultaneous multi-way control, at this time, as long as the shape of the curved line of the upper positioning curved surface 5.1 and the lower positioning curved surface 5.2 and the number of gear grooves (such as two gear grooves in the embodiment shown in the figure) and the number of trigger lugs 5.3 are redesigned to match, the overall size of the switch does not need to be changed, thereby further reducing the overall size of the switch. Figure 4

[0028] At the same time, the upper cover of the shell 1 is sealed with the upper cover gasket 7, the rotating shaft 6 passes through the gasket 7, and the lower surface of the gasket 7 is provided with a containing groove 7.1 and the upper surface is provided with a positioning hole 7.2, the upper part of the positioning pin 3 is located in the containing groove 7.1, thereby further reducing the overall thickness of the switch, and the assembly is more convenient for the operator to assemble and position.

[0029] Finally, the upper cover 8 is combined with the gasket 7, the lower surface of the upper cover 8 is recessed in the middle to form a limiting groove 8.1, the limiting block 6.1 protruding on the outer wall of the rotating shaft 6 is located in the limiting groove 8.1, thereby limiting the rotation angle of the rotating shaft 6 to avoid excessive rotation; at the same time, the lower surface of the upper cover 8 is also provided with a positioning column 8.2, the positioning column 8.2 is embedded in the positioning hole 7.2, thereby playing a positioning role during assembly.

[0030] Finally, the head of the rotating shaft 6 is connected with a handle 9, which is convenient for holding and rotating the rotating shaft 6 during operation.

[0031] During installation, due to the thin thickness of the shell 1, it can be conveniently installed in a narrow installation space such as a feeder, and the pin 1.2 is used to quickly install it on the internal circuit board of the FTU to realize quick connection, which greatly reduces the assembly time and improves the assembly efficiency. Finally, the handle 9 is installed outside the panel to facilitate the operation of the operator.

[0032] ​In addition, it should be noted that the above detailed description is only one of the optimization schemes of the patent, and any changes or improvements made by those skilled in the art based on the above idea are within the protection scope of the patent.

Claims

1. An integrated rotor characterized by: The upper part of the rotor is radially inwardly contracted to form an upper positioning curved surface (5.1), and the lower part of the rotor (5) is radially inwardly contracted to form a lower positioning curved surface (5.2), and the middle part of the rotor (5) is radially protruded to form a trigger protrusion (5.3).

2. An FTU switch comprising a housing (1) in which one or more contact pieces (2) are arranged, a rotating rotor (5) driven by a rotating shaft (6) being arranged in the housing (1), the rotor (5) being in sliding contact with the contact pieces (2) of the contact pieces (2.1), characterized in that: The shell (1) is horizontally provided with a guide groove (1.1), the positioning pin (3) is horizontally slidably arranged in the guide groove (1.1), and the positioning spring (4) is arranged in the guide groove (1.1) to push the positioning pin (3), and the head of the positioning pin (3) is in sliding contact with the positioning curved surface of the rotor (5).

3. The FTU switch of claim 2, wherein: One end of the positioning spring (4) is embedded in the spring hole (3.4) at the tail of the positioning pin (3), and the other end is abutted on the groove bottom of the guide groove (1.1).

4. The FTU switch of claim 2, wherein: The upper part and the lower part of the rotor (5) are respectively provided with an upper positioning curved surface (5.1) and a lower positioning curved surface (5.2), and the middle part of the rotor (5) is radially provided with a trigger protrusion (5.3); The head of the positioning pin (3) is respectively provided with an upper positioning head (3.1) and a lower positioning head (3.2), the end of the upper positioning head (3.1) and the lower positioning head (3.2) is in arc structure, and the gap between the upper positioning head (3.1) and the lower positioning head (3.2) forms a middle avoiding groove (3.3); The upper positioning head (3.1) and the lower positioning head (3.2) of the positioning pin (3) are respectively in sliding contact with the upper positioning curved surface (5.1) and the lower positioning curved surface (5.2) of the rotor (5), and the trigger protrusion (5.3) of the rotor (5) is horizontally slidably arranged in the middle avoiding groove (3.3) of the positioning pin (3).

5. The FTU switch of claim 4, wherein: The shell (1) is provided with a cover (7), and the shaft (6) penetrates through the cover (7).

6. The FTU switch of claim 5, wherein: The lower surface of the cover (7) is provided with a containing groove (7.1), and the upper part of the positioning pin (3) is located in the containing groove (7.1).

7. The FTU switch of claim 5, wherein: The cover (7) is provided with an upper cover (8), the lower surface of the upper cover (8) is concave to form a limiting groove (8.1), and the limiting block (6.1) protruded on the outer wall of the shaft (6) is located in the limiting groove (8.1).

8. The FTU switch of claim 7, wherein: The lower surface of the upper cover (8) is further provided with a positioning column (8.2), and the positioning column (8.2) is embedded in the positioning hole (7.2) on the upper surface of the cover (7).

9. The FTU switch of claim 2, wherein: The head of the shaft (6) is connected with a handle (9).

10. The FTU switch of claim 2, wherein: The side wall of the shell (1) is provided with a needle (1.2), and the needle (1.2) is electrically connected with the contact piece (2).

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