Change-over switch
By using the gear set in the drive system as the indicator gear in the conversion switch, combined with the motor drive, the problems of complex linkage structure and large space occupation are solved, and the high accuracy and compact indication function are achieved.
Patent Information
- Application Number
- CN202420491844.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-14
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-03-14
AI Technical Summary
The linkage structure of existing conversion switches is complex, prone to false alarms and takes up a large space, which affects the size reduction.
The gear set in the driving system is used as the indicator gear, and the indicator part of the gear set is exposed in the indicator window, combined with the motor driving, and instead of a separate indicator, the indication functions of high accuracy and space efficiency are realized.
Improves the accuracy of indications, reduces space occupation, simplifies the internal structure, and improves the space utilization and overall volume compactness.
Smart Images
Figure CN222190515U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of low-voltage electrical appliances, in particular to a conversion switch. Background Art
[0002] The transfer switch realizes the conversion of the load line between two power sources and is widely used in various places with uninterruptible power supply to ensure power supply reliability.
[0003] In existing switching switches, the indicator is usually a separate component, so that the indicator needs to be linked with the operating mechanism through a linkage structure. This has the following defects: first, there are multiple transmission rods in the linkage structure. If one of the transmission rods fails, it is easy to cause a false alarm of the indicator; second, the linkage structure needs to occupy a certain space, which makes the internal structure complicated and is not conducive to reducing the volume. Summary of the invention
[0004] The utility model aims to overcome at least one defect of the prior art and provide a transfer switch.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] The utility model provides a conversion switch, comprising a shell, a side wall of the shell is provided with an indication window, a drive system and at least one conductive system are arranged in the shell, the drive system comprises a gear set for driving the conductive system to open and close, the gear set comprises an indication gear, a circumferential side wall of the indication gear is provided with an indication portion, and the indication portion is correspondingly exposed from the indication window.
[0007] Preferably, a gear tooth portion for meshing connection is provided on one circumferential side wall of the indicating gear, and an indicating portion is provided on the other circumferential side wall of the indicating gear, wherein the central angle of the indicating portion is smaller than the central angle corresponding to the gear tooth portion.
[0008] Preferably, the driving system further comprises a motor, the motor is meshedly connected with the gear set, the indicating gear is the final gear of the gear set and is located at opposite sides of the housing with the motor.
[0009] Preferably, the driving system and the conductive system are stacked in the housing, the conductive system includes a rotating shaft and a contact mechanism driven by the rotating shaft, the gear set includes a driving gear, and the output shaft of the driving gear is drivingly connected to the rotating shaft.
[0010] Preferably, the total width of the stacked arrangement of the drive system and the conductive system is a module width.
[0011] Preferably, a middle portion of one side of the housing protrudes outward to form a protruding portion, an indicating window is provided on a side wall of the protruding portion, and an indicating gear is correspondingly arranged inside the protruding portion.
[0012] Preferably, the conductive system comprises two pairs of wiring terminals and two groups of contact mechanisms, wherein the interval between one pair of wiring terminals is smaller than the interval between the other pair of wiring terminals.
[0013] Preferably, each pair of wiring terminals is divided into an incoming terminal and an outgoing terminal, the incoming terminal is connected to a power supply portion, and the power supply portion extends to the outside of the housing for connecting to a detection device arranged on the housing to supply power.
[0014] Preferably, the two pairs of wiring terminals include two incoming terminals and one outgoing terminal, one end of the two groups of contact mechanisms are respectively connected to the two incoming terminals, and the other ends of the two groups of contact mechanisms are connected to the same outgoing terminal.
[0015] Preferably, one pair of the connecting terminals is correspondingly arranged inside the protruding portion, and the other pair of connecting terminals is arranged at opposite ends of the housing.
[0016] The conversion switch of the utility model does not need to be provided with an indicator separately, and a gear in the driving system is used as an indicator gear for indicating, which has the advantages of high accuracy and small occupied space.
[0017] In addition, the indicating window and the indicating gear are cooperatively arranged on the protruding portion of the shell, so as to reasonably utilize the internal space of the shell and improve the space utilization rate. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the structure inside the drive system of the utility model;
[0019] Figure 2 It is a front view of the interior of the drive system in the utility model;
[0020] Figure 3 It is a schematic diagram of the structure inside the conductive system of the utility model;
[0021] Reference numerals:
[0022] 1-housing, 10-protrusion, 11-limiting part, 12-indicator window, 2-conductive system, 211-incoming terminal, 212-outgoing terminal, 22-rotating shaft, 231-linkage part, 232-reset part, 241-moving contact assembly, 2411-contact support, 2412-moving contact part, 242-static contact, 2421-static contact part, 3-driving system, 31-control circuit board, 32-gear set, 321-driving gear, 322-indicator gear, 3221-indicator part, 33-motor. DETAILED DESCRIPTION
[0023] The following is a further description of the specific implementation of the transfer switch of the present utility model in conjunction with the embodiments given in the accompanying drawings. The transfer switch of the present utility model is not limited to the description of the following embodiments.
[0024] like Figure 1-3 As shown, the transfer switch includes a housing 1, in which a drive system 3 and at least one conductive system 2 are arranged. When two or more conductive systems 2 are arranged in the housing 1, two adjacent conductive systems 2 are arranged in a stacked manner; each conductive system 2 includes at least three wiring terminals, two groups of contact mechanisms and a rotating shaft 22, and the wiring terminals are divided into at least two incoming terminals 211 and at least one outgoing terminal 212. The incoming terminals 211 and the outgoing terminals 212 are arranged at opposite ends of the housing 1 at intervals, and each wiring terminal is used to connect to an external power supply in correspondence with a wiring port opened on the housing 1, and each group of contact mechanisms is connected between an incoming terminal 211 and an outgoing terminal 212, that is, a wiring assembly connected to a group of contact mechanisms of the conductive system 2 is connected to a common power supply, and another group of contact mechanisms is connected to a standby power supply through a wiring assembly connected thereto.
[0025] Specifically, the two groups of contact mechanisms in each conductive system 2 are spaced opposite to each other in the housing 1, and each group of contact mechanisms is connected between an incoming terminal 211 and an outgoing terminal 212. The rotating shaft 22 is arranged between the two groups of contact mechanisms. The driving system 3 drives the two contact mechanisms in each conductive system 2 through the rotating shaft 22, so that the opening and closing of one pair of contact mechanisms is used to control the disconnection and connection of the common power supply, and the opening and closing of the other pair of contact mechanisms is used to control the disconnection and connection of the backup power supply, and the common power supply and the backup power supply are not connected at the same time, that is, the two groups of contact mechanisms will not be closed at the same time; each group of contact mechanisms can adopt the existing technology, that is, each group of contact mechanisms includes a moving contact assembly 241 and a static contact group that are spaced opposite to each other, and under the direct or indirect drive of the driving system 3, the moving contact assembly 241 of each group of contact mechanisms moves along a straight line to contact or separate from the static contact group.
[0026] For the convenience of description, the moving direction of the moving contact assembly 241 is taken as the first direction, that is, Figure 2 , 3 The up-down direction in the figure is the first direction, the two sets of contact mechanisms are arranged at intervals in the first direction, the two directions perpendicular to the first direction are divided into the second direction and the third direction, the incoming terminal 211 and the outgoing terminal 212 are arranged at intervals in the second direction, that is, Figure 2 , 3 The left and right directions in the figure are the second directions, and the third direction is perpendicular to both the first direction and the second direction. Figure 2 , 3 In the drawing, the third direction is a direction perpendicular to the paper surface, and two adjacent conductive systems 2 are stacked in the third direction.
[0027] The improvement of the present application is that the gear set 32 includes an indicating gear 322, and the circumferential side wall of the indicating gear 322 is provided with an indicating portion 3221, and the indicating portion 3221 is correspondingly exposed from the indicating window 12. In this way, no separate indicating member is provided in the transfer switch, and a gear in the driving system 3 is used as the indicating gear 322 for indicating, which has the advantages of high accuracy and small space occupation.
[0028] Specifically, the drive system 3 also includes a motor 33 meshingly connected to the gear set 32, the gear set 32 also includes at least one gear, another gear in the gear set 32 serves as a driving gear 321, the output shaft of the driving gear 321 is drivingly connected to the rotating shaft 22 in the adjacent conductive system 2, the motor 33 and the indicating gear 322 are respectively located on opposite sides of the housing 1, that is, the indicating gear 322 is the final gear in the gear set 32, so as to prevent the indicating gear 322 from affecting the transmission function of other gears in the gear set 32 between the motor 33 and the adjacent conductive system 2.
[0029] A section of gear teeth is provided on the circumferential side wall of one side of the indicating gear 322, and the indicating gear 322 is meshed and connected with an adjacent gear in the gear set 32 through the gear teeth. An indicating portion 3221 is provided on the circumferential side wall of the other side of the indicating gear 322, and a recognizable mark is provided on the indicating portion 3221. The corresponding mark is exposed through the indicating window 12 to determine the state of the switching switch.
[0030] Furthermore, the middle part of one side of the shell 1 protrudes outward to form a protrusion 10, the indication window 12 is opened on the side wall of the protrusion 10, and the indication gear 322 is correspondingly arranged inside the protrusion 10, so as to make full use of the space inside the shell 1 and improve the space utilization rate.
[0031] Combination Figure 1-3 A specific embodiment of a transfer switch is provided.
[0032] As shown in the figure, the transfer switch includes a housing 1, a drive system 3 and at least one conductive system 2 are arranged in the housing 1, and the drive system 3 and the conductive system 2 are stacked in the third direction. Preferably, the total width of the drive system 3 and an adjacent conductive system 2 is a module width, which is conducive to reducing the overall volume. In the present application, a module width is 18 mm.
[0033] like Figure 1-3As shown, the middle part of one side of the shell 1 protrudes outward along the first direction to form a protrusion 10, so that the shell 1 as a whole presents a "convex" shape structure. When the number of conductive systems 2 is two or more, a partition can be arranged inside the shell 1 to separate two adjacent conductive systems 2 or the drive system 3 from the adjacent conductive system 2. Alternatively, the shell 1 includes two or more unit shells of the same shape, each of which has at least one conductive system 2 arranged therein, wherein a drive system 3 and a conductive system 2 can be arranged in one of the unit shells at the same time, and the total width of the drive system 3 and one conductive system 2 is a module width. Of course, the drive system 3 can also be arranged in a unit shell alone, and the width of the unit shell is preferably a module width. In addition, the width of the unit shell for assembling the drive system 3 can also be appropriately adjusted according to the actual width of the drive system 3.
[0034] like Figure 1 , 2 As shown, the drive system 3 includes a control circuit board 31, a motor 33 and a gear set 32, wherein the control circuit board 31 is stacked in the housing 1 in the third direction, the motor 33 is stacked on the control circuit board 31 and connected to the control circuit board 31, and the output shaft of the motor 33 is meshed with the gear set 32, wherein the gear set 32 includes a plurality of meshed gears, one gear in the gear set 32 serves as a driving gear 321, the output shaft of the driving gear 321 is used to drive the conductive system 2, and the final gear of the gear set 32 serves as an indicating gear 322. In the figure, a section of a gear tooth portion for meshing connection is provided on a circumferential side wall on one side of the indicating gear 322, and an indicating portion 3221 is provided on a circumferential side wall on the other side of the indicating gear 322. The central angle of the central angle gear tooth portion of the indicating portion 3221 can limit the rotation range of the indicating portion 3221 without interfering with the meshing connection of the indicating gear 322 with other gears in the gear set 32.
[0035] In this embodiment, the indicating gear 322 is arranged correspondingly inside the protruding portion 10 of the outer shell 1, an indicating window 12 is opened on the side wall of the protruding portion 10, and the motor 33 is arranged inside the outer shell 1 away from the protruding portion 10. As the motor 33 rotates, the indicating gear 322 rotates to switch different marks on the indicating portion 3221 to expose the indicating window 12, which is used to indicate the state of the switching switch.
[0036] like Figure 3As shown, the conductive system 2 includes two pairs of wiring terminals and two groups of contact mechanisms, each pair of wiring terminals is respectively an incoming terminal 211 and an outgoing terminal 212, the two pairs of wiring terminals are arranged at intervals in the first direction, and in the second direction, each pair of wiring terminals are arranged at intervals, wherein the interval between one pair of wiring terminals is smaller than the interval between the other pair of wiring terminals, in the figure, one pair of wiring terminals is arranged inside the protruding portion 10, and the other pair of wiring terminals is arranged at both ends of the housing 1 close to the connecting wall, each pair of wiring terminals includes an incoming terminal 211 and an outgoing terminal 212, in this embodiment, all the incoming terminals 211 are arranged on the same side of the housing 1, and the outgoing terminal 212 is arranged on the other side of the housing 1, the two incoming terminals 211 in the same conductive system 2 are staggered in the first direction, the two outgoing terminals 212 can also be staggered in the first direction, the two outgoing terminals 212 are connected in parallel outside the housing 1 after the outgoing wires, and each wiring terminal adopts the existing structure, that is, each wiring terminal includes a wiring frame and a wiring screw arranged on the wiring frame, wherein the wiring hole corresponds to a wiring port, and the wiring screw corresponds to the operation hole.
[0037] Preferably, the two pairs of wiring terminals include two incoming terminals 211 and one outgoing terminal 212. In this case, the two pairs of wiring terminals share one outgoing terminal 212. The outgoing terminal 212 and one incoming terminal 211 are arranged at both ends of the housing 1 in the first direction, and the other incoming terminal 211 is arranged in the protrusion 10. It can also be understood that three wiring terminals are arranged in the housing 1.
[0038] Furthermore, each incoming terminal 211 is also connected to a power supply unit, which extends to the outside of the housing 1 to facilitate connection with a detection device disposed outside the housing 1 to obtain power.
[0039] The contact mechanism can adopt existing technology, such as Figure 3 As shown, two groups of contact mechanisms are arranged at intervals in the first direction, and each group of contact mechanisms includes a movable contact assembly 241 and a stationary contact group that are spaced and opposite to each other in the first direction. The movable contact assembly 241 includes a contact support 2411 and a movable contact bridge. The middle of the contact support 2411 is provided with an assembly groove, and the movable contact bridge is arranged in the assembly groove along the second direction. Both ends of the movable contact bridge extend out of the assembly groove as movable contact portions 2412. The stationary contact group includes two stationary contacts 242 that are spaced and arranged in the second direction. Figure 3 As shown, each stationary contact 242 includes a stationary contact plate, one end of which is provided with a stationary contact portion 2421, each stationary contact portion 2421 is respectively matched with a moving contact portion 2412, and the other end of the stationary contact plate is connected to an adjacent terminal; a rotating shaft 22 for driving two moving contact assemblies 241 is rotatably arranged between the two groups of contact mechanisms.
[0040] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate directions or positional relationships based on directions or positional relationships shown in the drawings, or directions or positional relationships that are usually placed when in use, and are only for the convenience of description, rather than indicating that the device or element referred to must have a specific direction, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish descriptions, and cannot be understood as indicating relative importance.
[0041] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.
Claims
1. A transfer switch, comprising a housing (1), a side wall of the housing (1) being provided with an indication window (12), a drive system (3) and at least one conductive system (2) being arranged in the housing (1), the drive system (3) comprising a gear set (32) for driving the conductive system (2) to open and close, characterized in that: The gear set (32) comprises an indicating gear (322), and an indicating portion (3221) is provided on a circumferential side wall of the indicating gear (322), and the indicating portion (3221) is correspondingly exposed from the indicating window (12).
2. The transfer switch according to claim 1, characterized in that: A gear tooth portion for meshing connection is provided on one circumferential side wall of the indicating gear (322), and an indicating portion (3221) is provided on the other circumferential side wall of the indicating gear (322), wherein the central angle of the indicating portion (3221) is smaller than the central angle corresponding to the gear tooth portion.
3. The transfer switch according to claim 1, characterized in that: The driving system (3) further comprises a motor (33), wherein the motor (33) is meshingly connected with the gear set (32), and the indicating gear (322) is the final gear of the gear set (32) and is located on opposite sides of the housing (1) with the motor (33).
4. The transfer switch according to claim 1, characterized in that: The drive system (3) and the conductive system (2) are stacked and arranged in the housing (1); the conductive system (2) comprises a rotating shaft (22) and a contact mechanism driven by the rotating shaft (22); the gear set (32) comprises a driving gear (321); and the output shaft of the driving gear (321) is drivingly connected to the rotating shaft (22).
5. The transfer switch according to claim 4, characterized in that: The total width of the stacked arrangement of the drive system (3) and the conductive system (2) is a module width.
6. The transfer switch according to claim 4 or 5, characterized in that: A middle portion of one side of the housing (1) protrudes outward to form a protruding portion (10), an indicating window (12) is provided on a side wall of the protruding portion (10), and an indicating gear (322) is correspondingly arranged inside the protruding portion (10).
7. The transfer switch according to claim 6, characterized in that: The conductive system (2) comprises two pairs of connection terminals and two groups of contact mechanisms, wherein the interval between one pair of connection terminals is smaller than the interval between the other pair of connection terminals.
8. The transfer switch according to claim 7, characterized in that: Each pair of connection terminals is divided into an incoming terminal (211) and an outgoing terminal (212); the incoming terminal (211) is connected to a power supply portion, and the power supply portion extends to the outside of the housing (1) and is used to connect to a detection device arranged on the housing (1) to supply power.
9. The transfer switch according to claim 8, characterized in that: The two pairs of connection terminals include two incoming terminals (211) and one outgoing terminal (212); one end of the two groups of contact mechanisms are respectively connected to the two incoming terminals (211), and the other ends of the two groups of contact mechanisms are connected to the same outgoing terminal (212).
10. The transfer switch according to claim 7, characterized in that: One pair of connection terminals is correspondingly arranged inside the protruding portion (10), and the other pair of connection terminals is arranged at opposite ends of the housing (1).