Combination switch

Abstract

The utility model discloses a combination switch which comprises a manual operation device, a first contactor, a second contactor and a bottom plate, the manual operation device, the first contactor and the second contactor are arranged on the bottom plate, and the manual operation device is located between the first contactor and the second contactor. The second contactor comprises a second shell; the manual operation device comprises a third shell; limiting protrusions are arranged on the two sides of the third shell, limiting holes are formed in the first shell and the second shell, and the limiting protrusions are inserted into the corresponding limiting holes so that the first shell, the second shell and the third shell can be connected together. The connecting structure has the advantage of being good in connecting strength.

Description

Technical Field

[0001] The present application relates to the electrical field of low-voltage switches, and is a combination switch for emergency starting. Background Art

[0002] Whether in the field of fire protection or motor starting, a combination switch is often required. This combination switch includes two AC contactors and a manual starting device. In some emergency situations, there is no time to wait for the natural start of the motor or water pump. The manual starting device is required to immediately connect the two AC contactors at the same time to complete the start of the motor or water pump.

[0003] Therefore, the existing combination switch is usually structured as follows: it includes a base plate, two contactors are fixed on the base plate, and the manual start device is sandwiched between the two contactors. In the previous combination switch, each contactor and manual start device is an independent individual, and there is no direct connection between them on the shell except for the transmission relationship. The shell is only fixed on the bottom plate, and such a structure makes the connection strength of the entire combination switch not very sufficient.

[0004] This is the case with the emergency start switches disclosed in the prior art patent documents such as CN207966822U, CN218498000U, CN114899047A, CN219144079U, and CN215266102U.

[0005] Therefore, how to improve the connection strength of the combination switch is a direction worthy of research. Summary of the invention

[0006] In view of this, the purpose of this application is to overcome the deficiencies in the prior art and to provide a combination switch.

[0007] The present application provides: a combination switch, which includes a manual operating device, a first contactor, a second contactor and a base plate, wherein the manual operating device, the first contactor and the second contactor are arranged on the base plate, and the manual operating device is located between the first contactor and the second contactor: wherein the first contactor includes a first shell, the second contactor includes a second shell, and the manual operating device includes a third shell; limiting protrusions are provided on both sides of the third shell, limiting holes are provided on the first shell and the second shell, and the limiting protrusions are inserted into the corresponding limiting holes so that the first shell, the second shell and the third shell are connected together.

[0008] By adopting this structure, on the basis of the prior art, the third shell is connected with the first shell and the second shell through the limiting protrusion and the limiting hole, which can undoubtedly improve the overall connection strength.

[0009] In some embodiments of the present application, the number of limiting holes on the first shell and the second shell are both two, and the number of limiting protrusions corresponds to the number of limiting holes; the two limiting holes on the same shell are spaced apart in the first direction, and the first direction is the width direction of the first contactor or the second contactor.

[0010] By adopting this structure and the design of the limiting holes arranged at intervals in the first direction, two limiting positions are provided between the third shell and the first shell and the second shell, thereby further improving the connection strength between them.

[0011] In some embodiments of the present application, the limiting hole is arranged higher than a center line of the first contactor or the second contactor in a height direction.

[0012] With this structure, the position of the limit hole is set higher than the center line of the first contactor or the second contactor in the height direction. This is because the bottoms of the first contactor and the second contactor are already connected to the base plate. Setting the limit hole to this position can further improve the overall connection strength.

[0013] In some embodiments of the present application, the manual operating device includes a driving device, an output slider, a driving rod, a reset spring and a fixed bracket; a movement space is provided in the fixed bracket, the output slider is slidably provided in the movement space, and the driving rod is connected to the output slider and moves synchronously with the output slider; the first shell and the second shell are both provided with travel holes for the driving rod to penetrate and for the driving rod to slide, and after the driving rod is penetrated, it is located above the first contact support of the first contactor and above the second contact support of the second contactor; the driving device is connected to the output slider, and under the drive of external force, the output slider is pushed downward to connect the first contactor and the second contactor; the reset spring is abutted against the output slider, and is used to drive the output slider to reset; the limiting protrusion is provided on the fixed bracket.

[0014] With this structure, the connection strength can be improved by setting the limiting protrusion on the fixed bracket. At the same time, the design of the fixed bracket will make it more convenient to set up components such as the output slider.

[0015] In some embodiments of the present application, a mounting groove and a through hole are provided on the output slider, and the through hole passes through the groove wall of the mounting groove; the driving rod penetrates the output slider through the through hole, and an anti-falling piece is provided on the part of the driving rod located in the mounting groove; the size of the anti-falling piece or the size formed by the anti-falling piece and the driving rod is larger than the size of the through hole to limit the driving rod from detaching from the through hole.

[0016] With this structure and the design of the anti-dropping piece, the driving rod can be stably matched with the output slider, thereby preventing the driving rod from being pulled out and improving the stability of the driving rod installation.

[0017] In some embodiments of the present application, the fixed bracket includes a first side branch, a second side branch, and a bottom branch connecting the first side branch and the second side branch; the first side branch and the second side branch are spaced apart in a first direction, and the first direction is the width direction of the first contactor or the second contactor; the first side branch, the second side branch, the bottom branch, the first shell and the second shell together form the movement space.

[0018] With this structure, the movement space is formed by the first side branch, the second side branch, the bottom branch, the first shell and the second shell. That is to say, the space formed by the first side branch, the second side branch and the bottom branch is open on two sides and needs to be closed by the first shell and the second shell. In this way, the length dimension of the combination switch (the dimension in the arrangement direction of the first shell, the second shell and the third shell) can be reduced as much as possible, making the entire switch more compact.

[0019] In some embodiments of the present application, a wiring channel is provided on the fixing bracket.

[0020] The reservation of the wiring channel can provide a possibility for producing intelligent combination switches. The intelligent combination switch (that is, the combination switch including the controller) can be routed through the wiring channel.

[0021] In some embodiments of the present application, a return spring mounting portion is provided on the fixing bracket.

[0022] The design of the return spring mounting portion will make the installation of the return spring more convenient.

[0023] In some embodiments of the present application, the driving device includes a housing of the driving device, which is detachably fixed to a fixed bracket, an upper end of the housing of the driving device protrudes beyond the upper surfaces of the first shell and the second shell, and a lower end of the housing of the driving device is inserted into the fixed bracket to correspond to the output slider.

[0024] The drive device is fixed in this way, which makes the installation of the entire product very convenient. That is, after the first contactor, the second contactor, the fixed bracket, the slider and other components are installed, it is only necessary to fix the drive device to the fixed bracket so that the lower end of the outer shell of the drive device is inserted into the fixed bracket and corresponds to the output slider.

[0025] In some embodiments of the present application, the bottom branch is located on the upper surface of the bottom plate; the first end of the first side branch and the first end of the second side branch are both connected to the bottom branch, and the second end of the first side branch and the second end of the second side branch extend toward the height direction of the first contactor or the second contactor; the second end of the first side branch and the second end of the second side branch exceed the center line of the height direction of the first contactor or the second contactor.

[0026] By adopting this structural design, the strength of the fixing bracket can be improved, thereby improving the connection strength as much as possible.

[0027] In some embodiments of the present application, the first side surface of the first shell and the second side surface of the second shell are two adjacent surfaces; from the height direction of the first contactor and the second contactor, a first interval and a second interval are formed between the first side surface and the second side surface, and the distance of the first interval is smaller than the distance of the second interval; the first side branch and the second side branch include a narrow portion and a wide portion, the size of the narrow portion matches the first interval, and the size of the wide portion matches the second interval.

[0028] By adopting this structure, the first side branch and the second side branch are set as a narrow part and a wide part, which can adapt to the shell structure of the contactor, so that the connection between the fixed bracket and the first shell and the second shell is tighter, the strength of the connection is improved, and the overall structure of the combination switch looks more compact.

[0029] In some embodiments of the present application, a first wiring channel is provided in the bottom branch.

[0030] In some embodiments of the present application, a second wiring channel is provided in the second side branch.

[0031] Whether it is the reservation of the first wiring channel or the reservation of the second wiring channel, it can provide a possibility for producing intelligent combination switches. The intelligent combination switch (that is, the combination switch including a controller) can be routed through the first and second wiring channels. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0033] Figure 1 A schematic diagram of the structure of a combination switch in Embodiment 1 of the present application is shown;

[0034] Figure 2 A schematic diagram of the structure of a manual operation removal device in a combination switch in Embodiment 1 of the present application is shown;

[0035] Figure 3 An exploded schematic diagram of a manual operating device in a combination switch in Embodiment 1 of the present application is shown;

[0036] Figure 4A schematic diagram of the structure of the first contactor and the second contactor after explosion in the combination switch of Embodiment 1 of the present application is shown;

[0037] Figure 5 A schematic diagram of the structure of a manual operating device in a combination switch in Example 1 of the present application is shown;

[0038] Figure 6 A schematic diagram of the structure of a fixed bracket in a combination switch in Embodiment 1 of the present application is shown;

[0039] Figure 7 A schematic diagram and a partial enlarged diagram of an output slider and a driving rod in a combination switch of Example 1 of the present application are shown;

[0040] Figure 8 A diagram showing the positional relationship between the driving rod and the first contact support and the second contact support in the combination switch of Embodiment 1 of the present application is shown;

[0041] Fig. 9 A schematic diagram of a first contactor and a second contactor in a combination switch according to Embodiment 1 of the present application is shown. DETAILED DESCRIPTION

[0042] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0043] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0044] In addition, the terms "primary" and "secondary" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "primary" and "secondary" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0045] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0046] In the present application, unless otherwise clearly specified and limited, the main feature being "above" or "below" the second feature may mean that the main feature is in direct contact with the second feature, or that the main feature is in indirect contact with the second feature through an intermediate medium. Moreover, the main feature being "above", "above" and "above" the second feature may mean that the main feature is directly above or obliquely above the second feature, or simply means that the main feature is higher in level than the second feature. The main feature being "below", "below" and "below" the second feature may mean that the main feature is directly below or obliquely below the second feature, or simply means that the main feature is higher in level and has a lower electrical connection with the three-phase power supply than the second feature. Example

[0047] like Figure 1-Figure 9 As shown, the embodiment of the present application provides a combination switch. This combination switch can be used in a fire pump control cabinet as an emergency starting device, and can also be used in a star-delta starting switch for emergency starting.

[0048] The combination switch includes a base plate 100 , a first contactor 200 , a second contactor 300 , and a manual operating device 400 .

[0049] The first contactor 200 and the second contactor 300 are both fixed on the bottom plate 100, and the fixing here is bolt fixing. Of course, other fastening methods can also be used for fastening, such as snap fixing, riveting fixing, etc., as long as the first contactor 200 and the second contactor 300 can be fixed and stably fixed to the bottom plate 100.

[0050] Since the first contactor 200 and the second contactor 300 are arranged at an interval, the manual operating device 400 is located in the interval to fill the interval.

[0051] The manual operating device 400 includes a third housing, the first contactor 200 includes a first housing, and the second contactor 300 includes a second housing. Limiting protrusions 4030 are provided on both sides of the third housing, and limiting holes 2021 are provided on the first housing and the second housing, and the limiting protrusions 4030 are inserted into the corresponding limiting holes 2021, so that the three housings are connected together to improve the connection strength.

[0052] Here, the number of the limiting holes 2021 on each housing is two, and the two limiting holes 2021 on the same housing are spaced apart in the first direction (that is, the width direction of the first contactor 200 and the second contactor 300). The number of the limiting protrusions 4030 on each side of the corresponding third housing is also two, which can further improve the connection strength between the housings.

[0053] Here, from the height direction of the first contactor 200 and the second contactor 300, the position of the limiting hole 2021 is higher than the center line L of the height direction of the first contactor 200 and the second contactor 300, so that the connection strength can be further improved.

[0054] Since there are many specific structural types of the first contactor 200, the second contactor 300 and the manual operating device 400, as long as the limiting protrusion 4030 is provided on the third shell and the limiting hole 2021 is provided on the first shell and the second shell, the connection strength of the combination switch can be improved.

[0055] The present application is described in detail below through a preferred implementation scheme of the combination switch:

[0056] The first contactor 200 and the second contactor 300 are both contactors with the same current specifications.

[0057] The first housing includes a first base 201, a first pedestal 202, a first upper cover 203 and a first top cover 204. Similarly, the second housing includes a second base 301, a second pedestal 302, a second upper cover 303 and a second top cover 304. The parts in the same housing are fastened by bolts.

[0058] A first contact support 205 is provided inside the first shell, and a second contact support 305 is provided inside the second shell. The first contactor 200 and the second contactor 300 can be connected by sliding the first contact support 205 and the second contact support 305 downward. This is a conventional technical means for those skilled in the art and will not be described in detail here.

[0059] Two travel holes 2020 are formed on the side of the first base 202 adjacent to the manual operating device 400 . Similarly, two travel holes 2020 are formed on the side of the second base 302 adjacent to the manual operating device 400 .

[0060] The manual operating device 400 includes a driving device, an output slider 403, a driving rod 404, a return spring 405 and a fixing bracket 402. The third housing is formed by the outer shell 401 of the driving device and the fixing bracket 402.

[0061] The fixed bracket 402 includes a first side branch 402a, a second side branch 402b and a bottom branch 402c. The first side branch 402a and the second side branch 402b are spaced apart in the first direction, the first direction being the width direction of the first contactor 200 or the second contactor 300, and the first ends of the first side branch 402a and the second side branch 402b are connected through the bottom branch 402c to form a roughly U-shaped structure. Since both sides of this U-shaped structure are open, a motion space P is formed by the first shell and the side surfaces adjacent to the second shell (the first base 201, the first base 202, the second base 301 and the relevant side surfaces of the second base 302).

[0062] Here, the bottom branch 402c is located on the upper surface of the bottom plate 100. The second end of the first side branch 402a and the second end of the second side branch 402b both extend toward the height direction of the first contactor 200 or the second contactor 300, and are both arranged beyond the center line L of the height direction of the first contactor 200 or the second contactor 300. The above-mentioned limiting protrusion 4030 is arranged near the second end of the first side branch 402a and the second side branch 402b, and the corresponding limiting hole 2021 is arranged on the first base 202 and the second base 302.

[0063] The output slider 403 is slidably arranged in the motion space P. The motion direction of the output slider 403 here is consistent with the motion direction of the contact support, that is, the height direction of the first contactor 200 and the second contactor 300. A return spring mounting portion 402c1 is arranged on the bottom branch 402c. The number of return spring mounting portions 402c1 here is two, both of which are convex structures. One end of the return spring 405 can be sleeved on the return spring mounting portion 402c1, and the other end of the return spring 405 is against the output slider 403, so that the output slider 403 can be driven to reset after the force driving the output slider 403 to slide downward disappears. Of course, as a better choice, a return spring mounting portion 402c1 can also be arranged on the output slider 403 to ensure the stability of the return spring 405.

[0064] There are two driving rods 404, both of which penetrate the output slider 403. The two ends of the driving rods 404 extend above the first contact support 205 and the second contact support 305 through the corresponding travel holes 2020. Here, the output slider 403 is provided with a mounting groove 4031 and a through hole 4032, and the through hole 4032 penetrates the groove wall of the mounting groove 4031. The driving rod 404 penetrates the output slider 403 through the through hole 4032. The portion of the driving rod 404 located in the mounting groove 4031 is provided with a clamping groove 4041, and the clamping groove 4041 is provided with an anti-dropping member 4042, where the anti-dropping member 4042 is a clamping ring, and the size of the clamping ring is larger than the size of the through hole 4032. Of course, the anti-falling part 4042 here can also be made of bolts, pins, etc., as long as it is ensured that after cooperating with the slot 4041, the size formed by the anti-falling part 4042 and the driving rod 404 is larger than the size of the through hole 4032, which can also prevent the driving rod 404 from escaping from the through hole 4032.

[0065] The driving device includes a housing 401 of the driving device and a driving component. The specific transmission structure of the driving component is already in the prior art, and the details disclosed in CN116259505A can be referred to. The housing 401 of the driving device is detachably fixed on the first side branch 402a and the second side branch 402b, and is fastened by screws. Of course, in addition to this, it can also be fastened by a snap-on fixing method. After fixing, the upper end of the housing 401 of the driving device exceeds the upper surface of the first shell and the second shell, and the lower end of the housing 401 of the driving device is inserted into the fixed bracket 402 to correspond to the output slider 403, that is, the output part of the driving component corresponds to the output slider 403.

[0066] In this way, when in use, the user can drive the assembly through external force to make the output slider 403 move downward, drive the first contactor 200 and the second contactor 300 to be connected, and realize emergency or emergency start.

[0067] In this embodiment, the side surfaces of the first shell and the second shell are not completely flat. As can be seen from the accompanying drawings, the width of the first base 201 is greater than the width of the first base 202, and the width of the second base 301 is greater than the width of the second base 302. Therefore, there are two different intervals between the first side surface of the first shell (formed by the surfaces of the first base 201 and the first base 202) and the second side surface of the second shell (formed by the surfaces of the second base 301 and the second base 302), namely the first interval T1 and the second interval T2, and from the height direction of the first contactor 200 and the second contactor 300, the second interval T2 is located above the first interval T1, and the distance of the first interval T1 is smaller than the distance of the second interval T2. The first side branch 402a and the second side branch 402b include a narrow portion 402a1 and a wide portion 402a2, wherein the width dimension here matches the second interval T2, and the dimension of the narrow portion 402a1 matches the first interval T1, so that the fixing bracket 402 fits more closely with the first shell and the second shell, thereby improving the strength.

[0068] In order to provide the wiring channel required for the intelligent combination switch harness, a wiring channel is provided on the fixed bracket 402. Here, the wiring channel can be a first wiring channel 402c2 provided in the bottom branch 402c, or a second wiring channel 402b1 provided in the second side branch 402b.

[0069] Of course, these two routing channels do not need to be available at the same time, only one of them is also acceptable.

[0070] Although the above embodiment exemplifies the first contactor and the second contactor having the same structure as the current specification, it is not limited to this case and can also be applied to contactors having different current specifications.

[0071] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without contradiction.

[0072] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A combination switch, comprising a manual operating device, a first contactor, a second contactor and a base plate, wherein the manual operating device, the first contactor and the second contactor are arranged on the base plate, and the manual operating device is located between the first contactor and the second contactor: characterized in that: The first contactor includes a first shell, the second contactor includes a second shell, and the manual operating device includes a third shell; limiting protrusions are provided on both sides of the third shell, and limiting holes are provided on the first shell and the second shell, and the limiting protrusions are inserted into the corresponding limiting holes, so that the first shell, the second shell and the third shell are connected together.

2. A combination switch according to claim 1, characterized in that: There are two limiting holes on the first shell and the second shell, and the number of limiting protrusions corresponds to the number of limiting holes; the two limiting holes on the same shell are spaced apart in the first direction, and the first direction is the width direction of the first contactor or the second contactor.

3. A combination switch according to claim 1 or 2, characterized in that: The limiting hole is arranged higher than the center line of the first contactor or the second contactor in the height direction.

4. A combination switch according to claim 1, characterized in that: The manual operating device also includes a driving device, an output slider, a driving rod and a reset spring. The third shell includes a shell of the driving device and a fixed bracket. A movement space is set in the fixed bracket. The output slider is slidably set in the movement space. The driving rod is connected to the output slider and moves synchronously with the output slider. The first shell and the second shell are both provided with travel holes for the driving rod to penetrate and slide. After the driving rod penetrates, it is located above the first contact support of the first contactor and above the second contact support of the second contactor. The driving device is connected to the output slider, and under the drive of an external force, the output slider is pushed downward to connect the first contactor and the second contactor. The reset spring is against the output slider and is used to drive the output slider to reset. The limiting protrusion is set on the fixed bracket.

5. A combination switch according to claim 4, characterized in that: The output slider is provided with a mounting groove and a through hole, and the through hole passes through the groove wall of the mounting groove; the driving rod penetrates the output slider through the through hole, and an anti-falling piece is provided on the part of the driving rod located in the mounting groove; the size of the anti-falling piece or the size formed by the anti-falling piece and the driving rod is larger than the size of the through hole to limit the driving rod from escaping from the through hole.

6. A combination switch according to claim 4, characterized in that: The fixed bracket includes a first side branch, a second side branch, and a bottom branch connecting the first side branch and the second side branch; the first side branch and the second side branch are spaced apart in a first direction, and the first direction is the width direction of the first contactor or the second contactor; the first side branch, the second side branch, the bottom branch, the first shell and the second shell together form the movement space.

7. A combination switch according to claim 4, characterized in that: A wiring channel is provided on the fixed bracket; or / and, a return spring mounting portion is provided on the fixed bracket; or / and, the outer shell of the driving device is detachably fixed to the fixed bracket, the upper end of the outer shell of the driving device exceeds the upper surfaces of the first shell and the second shell, and the lower end of the outer shell of the driving device is inserted into the fixed bracket to correspond to the output slider.

8. A combination switch according to claim 6, characterized in that: The bottom branch is located on the upper surface of the bottom plate; the first end of the first side branch and the first end of the second side branch are both connected to the bottom branch, and the second end of the first side branch and the second end of the second side branch extend toward the height direction of the first contactor or the second contactor; the second end of the first side branch and the second end of the second side branch exceed the center line of the height direction of the first contactor or the second contactor.

9. A combination switch according to claim 6, characterized in that: The first side surface of the first shell and the second side surface of the second shell are two adjacent surfaces; from the height direction of the first contactor and the second contactor, a first interval and a second interval are formed between the first side surface and the second side surface, and the distance of the first interval is smaller than the distance of the second interval; the first side branch and the second side branch include a narrow portion and a wide portion, the size of the narrow portion is consistent with the first interval, and the size of the wide portion is consistent with the second interval.

10. A combination switch according to claim 6, characterized in that: A first wiring channel is arranged in the bottom branch; and / or a second wiring channel is arranged in the second side branch.

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